Power supplies, signal converters and auxiliary devices
Reinforced concrete elements of collectors and collector tunnels PT 24-15 make it possible to place many different pipelines and communications in one collector tunnel and ensure the safety of the contents from external influences. Prefabricated collector elements are widely used in the construction of projects such as bridges, tunnels and overpasses. PT 24-15 elements have also found widespread use in the construction of subway tunnels.
Assembled reinforced concrete collectors and reinforced concrete tunnels are extended passage underground structures of round or rectangular cross-section, which are laid at a certain depth in a special way - the shield tunneling method. This method allows the construction of underground tunnels without destroying the surface located above the tunnel under construction. This method is relevant for large cities and cities under construction, in which a huge number of underground communications are used or planned.
Shield laying of tunnels and collectors is a process in which sequential development of a hole in the ground occurs using a special tunneling shield. The tunneling shield is a metal shell, support, the diameter or sides of which are equal to the outer diameter or sides of the designed tunnel. The cross-sectional shape of the shield depends on the shape of the excavation and the purpose of the tunnel and can be round, elliptical, horseshoe-shaped or rectangular.
This method has other advantages: it becomes possible to build tunnels in any hydrogeological conditions, and also significantly increases the maximum possible depth gaskets The tunneling shield consists of three main parts - front, middle and rear. The front one - cutting - directly develops the hole, pressing into the ground. The middle part, the supporting one, has hydraulic jacks, with the help of which the shield is moved as the tunnel is developed. The rear, tail part serves to protect the excavation and allows, without interrupting the pressing process, the installation (called lining) of reinforced concrete solid or prefabricated blocks and individual elements of collector tunnels.
Reinforced concrete elements of prefabricated collectors and collector tunnels PT 24-15 are manufactured according to series and working drawings developed by the Mosinzhproekt Institute.
Reinforced concrete, from which elements of prefabricated collectors and collector tunnels PT 24-15 are made, is by far the most durable building material. The high strength of concrete allows it to be used even in extreme conditions, for example, at great depths underground, where products experience quite strong pressure from the soil and various impacts from those contained in the soil chemical compounds. Resistance reinforced concrete structures numerous loads leads to the following important advantage– durability. Reinforced concrete products do not lose their original characteristics even after 50-70 years of operation! Therefore, it is not surprising that in the construction of such important objects as underground communications and metro tunnels, reinforced concrete is used, which also has low electrical conductivity and high moisture resistance and fire resistance.
Elements of prefabricated collectors and collector tunnels PT 24-15 are made of heavy concrete with a compressive strength class of at least B22.5. The frost resistance class of concrete assembly units is assigned depending on the operating mode and climatic conditions in the construction area, but not below F50. The water resistance class of concrete is assigned in the range from W6 to W8, since the products are used in an environment characterized by a high humidity index.
Reinforced concrete elements of collectors and collector tunnels PT 24-15 are reinforced with spatial frames made of welded meshes, flat frames and rods, which are made of hot-rolled reinforcing steel classes A-I, A-II and A-III according to GOST 5781-82.
Prefabricated elements of collectors and collector tunnels PT 24-15 are very important products, the quality of which determines the safety of communication networks and tunnels. Therefore, quite strict requirements are imposed on the quality of these products.
Cracks are not allowed in the concrete of products supplied to the consumer, with the exception of shrinkage and surface technological cracks, the width of which should not exceed 0.1 mm. Exposing the fittings is strictly prohibited. The thickness of the protective layer of concrete for working reinforcement must be at least 20 mm, deviations in thickness must not exceed 5 mm.
When manufacturing prefabricated elements of collectors and collector tunnels PT 24-15, the following maximum deviations from the design dimensions are allowed: ±10 mm in length, ±8 mm in internal cross-sectional dimensions (diameter or height and width), ±5 mm in wall thickness, ±5 mm – according to the dimensions of technological folds and cutouts. Deviations from the perpendicularity of the end surfaces, characterized by the deviation of the angle between the end and side surfaces from right angle, should not be more than 10 mm. The difference in the lengths of the diagonals of products should not exceed 8-12 mm.
Reinforced concrete elements of collectors and collector tunnels PT 24-15 are stored on planned sites, sorted by grade. Wooden spacers are installed under the bottom row, and wooden spacers are installed between the rows of products, which are located one above the other vertically.
Tender: Supply of dynamic car scales (designed for a system for reading car numbers), requirement C0221533 Dynamic car scales RTV-D, in the following configuration: 1. Load receiving device: - rail-type sensor DR-513 - 2 pcs.; - weighing device PV-15 - 2 pcs.; - communication cable P-296, m. 2x200 m.; - multiport board CP-112UL-I - 1 pc.; - block com. and power supplies BKP-24-15P-BZ - 1 pc.; 2. Electronic key USBStealthII; 3. CD with basic software; 4. Set of technical and exp. documentation - 1 set; 5. Additionally: The cost of installation, assembly and commissioning work should be indicated in the proposal as a separate line; The scales are installed on the existing rail-sleeper grid. Designed for the system for reading car numbers.
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№22734799 Posting date: 09/29/15
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2015-09-29 00:00:00: 2015-10-06 00:00:00:Tender for the supply of dynamic car scales (designed for a system for reading car numbers), requirement C0221533 Dynamic car scales RTV-D, in the following configuration: 1. Load receiving device: - rail type sensor DR-513-2 pcs.; - weighing device PV- 15-2 pcs.; - communication cable P-296, m. 2x200 m; - multiport board CP-112UL-I-1 pcs.; - com. and power supplies BKP-24-15P-BZ-1 pcs.; 2. Electronic key USBStealthII; 3. CD with basic software; 4. Set of technical and exp. documentation - 1 set; 5. Additionally: The cost of installation, assembly and commissioning work should be indicated in the proposal as a separate line; The scales are installed on the existing rail-sleeper grid. Designed for a system for reading car numbers. in Iskitim at Listvyansky, Iskitimsky District
Tender for the supply of dynamic car scales (designed for a system for reading car numbers), requirement C0221533 Dynamic car scales RTV-D, in the following configuration: 1. Load receiving device: - rail type sensor DR-513-2 pcs.; - weighing device PV- 15-2 pcs.; - communication cable P-296, m. 2x200 m; - multiport board CP-112UL-I-1 pcs.; - com. and power supplies BKP-24-15P-BZ-1 pcs.; 2. Electronic key USBStealthII; 3. CD with basic software; 4. Set of technical and exp. documentation - 1 set; 5. Additionally: The cost of installation, assembly and commissioning work should be indicated in the proposal as a separate line; The scales are installed on the existing rail-sleeper grid. Designed for a system for reading car numbers. in Iskitim. Price: not specified.
Download documentation for tender No. 22734799
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Power supply unit BP-2-24V-DIN (single-channel, 220/24V, DIN rail mounting) price 1090 RUR + VAT
IN this section the following are presented auxiliary means and control and regulation devices technological processes(blocks, converters, devices, relays):
1. Power supplies: BP, 2BP, 4BP, BPD, BPI, BPR, BPK and other (single- and multi-channel) power supplies. for instrumentation and automation
2. Signal conversion units (including root extraction): BPS, BIK, BKP, BIKOR, BRIS.
Artificial protection barriers: Spark, RIF, BIT, BIP, Corundum, Signal.
3. Normalizing converters (NP): NTP, NP02, PNT, PST, NPSI, Korund, Sh9321, IP 0304, IPM, etc.
4. Electro-pneumatic positioners and converters: EP (Ex), EPP-1,-2 (Ex), PP-1(2).
5. Control and protection devices UZOTE, BGR, BSF, MNS.
6. Switching units (control devices for thyristors and triacs): BOOST, BKST, BKM.
7. Solid state relays: SSR and RTR cooling radiators.
Brief overview of auxiliary units, converters and devices
Below is a list of the most common models of power supplies. and signal conversion, spark protection barriers and normalizing converters NP:
1. Power supplies - PSU
Single and multi-channel power supplies. Instrumentation and automation (=24V, 36V):
The simplest single-channel 24V power supply
inexpensive single-channel power supplies
Power supplies BP02, BP04, BP07, BP14 are designed to power sensors with stabilized DC voltage.
Maximum output power: 2W, 4W, 7W, 14W. Each power supply has modifications of two output voltage ratings: 24V and 36V.
BP02, BP04, BP07, BP14 are produced in plastic cases with DIN rail mounting.
,
- single-channel power supplies for industrial automation
Maximum output power: 15W, 30W and 60W. Each power supply has modifications of 8 output voltage ratings: 5V, 9V, 12V, 15V, 24V, 36V, 48V and 60V.
BP-15, BP-30, BP-60 are produced in plastic cases with mounting on a 35mm DIN rail.
Multichannel power supplies designed to supply stabilized voltage 24V or 36V sensors with a unified output current signal.
Uninterruptible power supply and battery backup
4BP36- four-channel power supply 4BP-36V.
2BP36- two-channel power supply.
22BP-36- power supply 1, 2, 4 and 8 channels.
BPD-24- power unit.
BPD-40, -40Ex- power supply (including use - Ex).
BPD- stabilized power supply.
BPR- relay power supply.
BPI-24- pulse power supply 1 and 2 channels.
BP36-1 (2)- power unit.
BP96, BP99, BP906
- DC power supplies.
BP-2036A- DC power supply.
BPK-24- power supply and switching unit.
2. Signal conversion units (including root extraction) and spark protection (barriers)
BPPS-4090- power supply and signal conversion.
BPS-90P
, -90K
BPS-96 PR- signal conversion, spark protection and power supply unit.
BIK-36M- root extraction block.
BIK-1- root extraction block.
BKP-36-1 (2)- power supply and root extraction (for flow meters).
BPZS-Ex- power supply for protection and interfacing.
BPK-40M
, 40-Ex- power supply with root extraction device.
BICOR- root extraction block.
BRIS- signal branching and conversion unit.
Sh 9331, Sh 9332- bl. power supply and signal conversion.
Spark Barrier:
REEF- energy spark protection barrier.
BIT- spark protection barrier.
BIP-1- passive spark protection barrier.
CORUNDUM- spark protection barrier.
SIGNAL- system of spark protection barriers.
3. Normalizing converters (NC)
NP-02, NP-03
PNT, PST- normalizing converters.
NSSI-TP, NSSI-TS
- measuring normalizing converters.
NP-P10, N10, P10- normalizing converters.
CORUNDUM- normalizing converter.
Ш9321, 9322, 9324- standardizing converters of panelboard design.
IP 0304- measuring (normalizing) converters.
IPM-0104, -0399-M- modular converters.
4. Electro-pneumatic positioners and converters
EP- electro-pneumatic converter.
EP-Ex- electro-pneumatic explosion-proof converter.
EPP-1, EPP-2- electropneumatic positioner.
EPP-Ex-1, EPP-Ex-2
- electro-pneumatic explosion-proof positioner.
PP-1, PP-2- pneumatic positioner.
Power source (unit)- a radio-electronic device designed to provide various devices with electrical power.
There are primary and secondary power sources. The primary ones include converters various types energy into electrical energy (for example, a battery that converts chemical energy). Secondary sources themselves do not generate electricity, but serve only to transform it in order to provide the required parameters (voltage, current, voltage ripple, etc.).
Modern power supplies for instrumentation and automation (CI&A) are usually pulsed, have a built-in radio interference filter, protection against overload, short circuit and overheating, indication, galvanic isolation between input and outputs, as well as isolation of output channels from each other (for multi-channel units - two, four, eight or more channels).
The input voltage of such blocks is from 90 to 270V AC and 110-370 constant.
Rated output voltage 24 or 36V DC, instability of the output voltage is about + 0.2-0.7%.
Structurally, the blocks are made in panel, wall or DIN rail design.
How to choose and order (buy) a functional block, converter or device for process control.
1. Clearly determine for what purpose you need a power supply or signal conversion.
2. Select what type and modification of the device really suits you, and what functionality is really needed (for example, number of channels, power, additional functions, type of installation (wall-mounted, panel-mounted, rack-mounted, DIN-rail mounted), etc.).
3. Check if there is enough technical characteristics and parameters for correct design order (see BP order forms
).
4. Which additional equipment still necessary (installation and mounting fittings, cable elements, auxiliary units, components, devices, etc.).
5. How much are you willing to pay for equipment and additional costs (including packaging and delivery).
6. Are you competent to make decisions on making changes to the project and might you be interested in proposals from modern analogues that have a better PRICE-QUALITY ratio (according to our engineers).
7. What form of payment and delivery time are acceptable to you (please note that partial advance payment or urgent order fulfillment (“out of turn”) can sometimes lead to higher prices for products).
8. What is the most convenient way for you to receive the products (pickup, delivery, shipment through a transport company).
After this, fill out and send us an application, reflecting as many answers to the above questions as possible.
In this case We are sure that you will find our offer really interesting.
The floor slab of trays P 24-15 is a reinforced concrete slab rectangular shape, intended for blocking utility channels made of tray elements. The purpose of using this reinforced concrete product is to protect the underground channel from moisture, landslides and soil displacement, as well as to provide it with additional thermal insulation.
Marking
Like everyone else reinforced concrete products, used in mass construction, tray floor slabs P 24-15 in mandatory marked at the time of manufacture. The marking of P 24-15 slabs consists of a numerical and alphabetic designation, where:
- P - tray floor slab;
- 24 - conditional number of standard size;
- "d" - additional construction.
Production and material composition
For the manufacture of floor slabs for trays P 24-15, heavy concrete M200-300 with a strength class of B15, increased frost resistance (F300) and water resistance (W4) is used. To protect products from exposure to aggressive environments and to avoid corrosion, the surface of the slab, fittings and embedded elements are coated with a protective composition. In order to ensure high level resistance to external influences in the manufacture of P 24-15 slabs, special additives are added to concrete.
For the manufacture of floor slabs for trays P 24-15, one of the methods is used: a vibropress or vibratory casting. Each slab is reinforced with welded mesh and a steel frame made of reinforcement bars. The production of P 24-15 slabs occurs in strict compliance with the regulatory requirements established for the series 3.006.1-2/82(87).
The Concrete Concrete Industry Industry company offers tray floor slabs P 24-15 that meet all requirements regarding quality and strength, which is confirmed by relevant documents.
Quality control P 24-15
Since the floor slabs of trays P 24-15 perform important functions and must withstand significant loads, special attention during their manufacture is paid to product quality control. The slab must not have visible external defects or cracks. Exposure of reinforcement parts is not allowed. The protective layer must have the same thickness over the entire surface, the permissible difference is no more than 0.5 cm.
Specifications
- Length - 2990 mm;
- Width - 2780 mm;
- Height - 180 mm;
- Weight - 3740 kg;
- Concrete volume - 1.5 cubic meters. m.
Scope of application
The tray floor slab P 24-15 is designed to protect utility lines from damage and moisture, as well as to increase the level of their thermal insulation. The P 24-15 tray floor slab is used for both above-ground and underground structures. Due to its weight, it is tightly fixed to the channel and does not slide along the tray.
P 24-15 slabs are characterized by increased resistance to external influences, therefore they can be used for the construction of utilities in areas with difficult climatic and seismic conditions.
Installation features
The P 24-15 floor slabs are laid on top of the tray or on the bottom of the channel, after which these reinforced concrete products are welded using metal staples. To facilitate installation, P 24-15 slabs are equipped with mounting loops.
Transportation and storage
Floor slabs P 24-15 should be transported in a stack of no more than 8 pieces. Special attention is given to the reliability of fastening. In the places where the hinges are located, gaskets are required. The slabs are stored in stacks no more than 2.5 meters high on a flat surface, with a wooden pad at least 3 cm thick placed under the bottom layer.
Power switching units are designed to power devices and control actuators by switching relay contacts based on signals from sensors of the “SENS” measuring system (SI SENS). Power switching units with the index “-GS” are also equipped with an output for connecting a siren VS-3-12V. Each relay and siren output can be programmed to be triggered by one or more values of various measured parameters of one or more sensors, allowing you to set the required algorithm for automatic control, blocking and alarming. Programming of switching units is carried out using the MS-K-500-... signaling device or using a computer from the “Settings” program (you will need a LIN-RS232... or LIN-USB adapter).
Device
Switching power supplies differ in the number of relays, supply voltage and housing design. Switching power supplies, made in a plastic case, have an explosion-proof analogue in a metal case with the index “VZ” (Fig. 1 ... 3). Nomenclature and technical parameters power supplies are given in table. 1, connection diagrams - fig. 4...7.
Connection diagrams
Technical parameters (Table 1)
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Performances Parameter |
BPK-220V-4R-GS* |
BPK-12V-2R-GS |
BPK-24V-2R-GS |
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BPK-220V-4R-GS-VZ1* |
BPK-12V-2R-GS-VZ1 |
BPK-24V-2R-GS-VZ1 |
BPK-12V-5R-VZ |
BPK-24V-5R-VZ |
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Number of relays |
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Siren output VS-3-12V |
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Availability of power control button |
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Supply voltage, V |
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Power consumption, W, no more |
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Load parameters of relay contacts |
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Output voltage, V |
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Rated load current, A |
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Housing material |
impact resistant polystyrene |
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aluminum alloy |
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Explosion protection marking |
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BPK-...-VZ1 |
1Ex db IIB T4 Gb |
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Temperature range environment, °С |
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Climatic version according to GOST 15150 |
UHL4 in the temperature range from 5 °C to +50 °C |
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UHL1 in the temperature range from -50 °C to +60 °C |
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Degree of protection against water and dust according to GOST 14254 |
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Overall dimensions, mm |
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Average service life, years, not less |
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* There are versions with a rated load current of 1 A, which are designated: “BPK-220V-4R-GS-1A”, “BPK-220V-4R-GS-1A-VZ”.
Other parameters ( appearance, overall dimensions, connection diagram) - similar.
Designation
When ordering, power switching units are designated:
BPK-220V-4R-GS- A, BPK-220V-4R-GS-VZ- B, BPK-220V-4R-GS-1A- A, BPK-220V-4R-GS-1A-VZ- B,
BPK-12V-2R-GS- A, BPK-12V-2R-GS-VZ- B, BPK-24V-2R-GS- A, BPK-24V-2R-GS-VZ- B,
BPK-12V-5R- A, BPK-12V-5R-VZ- B, BPK-24V-5R- A, BPK-24V-5R-VZ- B,
Where:
A- availability of clamps for mounting on a 35 mm DIN rail: no designation - no clamps, DIN- there are clamps.
B- complete set of cable entries with devices for fastening the protective sheath of the cable: without designation without fastening devices; UKM10 / UKM12 / UKBK15 / UK16- with appropriate fastening device.
.