Pressure self-checking redundant gas supply device

Abstract

The utility model relates to the technical field of gas source safety gas supply, specifically is a pressure self -checking redundant gas supply device, including base, pressure transmitter no. One -way valve no. One, filter pressure reducing valve no. One, gas source pipe distributor and nuclear source switch valve, one end fixed with gas source pipe distributor at base top, one end is connected with gas source pipe A at one side of gas source pipe distributor, the utility model pressure self -checking redundant gas supply device integrates pressure self -checking module and redundant gas supply structure, can pass through two -way gas supply path and pressure monitoring, ensures that single gas supply unit failure system still can steady gas supply, can avoid the influence of the gas source of the nuclear source switch valve opening degree because of pressure instability, gas leakage, gas source sundries and other factors, is favorable to guarantee the precision of measurement, and can carry out effective emergency measures to false alarm actual situation, thereby can effectively improve the safety of gas source gas supply.

Description

Technical Field

[0001] This utility model relates to the field of gas source safety supply technology, specifically to a pressure self-checking redundant gas supply device. Background Technology

[0002] Gas source safety supply is suitable for scenarios requiring high gas pressure stability and continuous gas supply. It is widely used in industries such as chemical production, medical equipment, and precision manufacturing. Through pressure sensors, controllers, and monitoring algorithms, it detects the pressure value within the gas supply system in real time and compares it with a preset safety threshold, automatically triggering an alarm or switching to a backup gas source. For example, in the processing of materials such as polyethylene, polypropylene, and polyvinyl chloride, nuclear level gauges are used to measure the material level in containers. This involves receiving gamma rays emitted from a radioactive source (cesium-137) to measure the material height. When the rays penetrate the material, their intensity decreases due to absorption and scattering by the material; the degree of attenuation is proportional to the material level. By detecting the change in gamma ray intensity after penetration, the material level in the storage tank can be determined. The storage tank level measurement equipment has a high-level alarm interlock switch and a high-liquid-level interlock, both of which are one-to-one interlocks.

[0003] However, the existing source switch valve's gas supply is affected by factors such as unstable pressure, air leakage, and impurities in the gas supply, which can affect the valve's opening and thus the measurement. In the current situation, if there is air leakage or unstable gas pressure in the source switch valve's gas supply channel, the valve will close less, resulting in the inability to fully emit the gamma rays from the radioactive source (cesium-137). This reduces the amount of gamma rays received by the nuclear level gauge, leading to a high level. If the level in the reactor or other storage tank is falsely high, it can cause an interlock that shuts down the production unit, resulting in economic losses. Moreover, there are no effective measures to address false alarms, making the gas supply unsafe. Therefore, we propose a pressure self-checking redundant gas supply device. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a pressure self-testing redundant gas supply device.

[0005] The technical solution adopted by this utility model to solve its technical problem is a pressure self-checking redundant gas supply device, including a base, a first pressure transmitter, a first one-way valve, a first filter pressure reducing valve, a gas source pipe distributor, and a nuclear source switch valve. The gas source pipe distributor is fixed to one end of the top of the base. One end of the gas source pipe distributor is connected to a first gas source pipe A. A third air inlet manual valve is provided on the first gas source pipe A near the gas source pipe distributor. A first one-way valve is installed on the other end of the first gas source pipe A. A filter pressure reducing valve is provided on one side of the first check valve. A solenoid valve is provided on the first air source pipe A and on the side of the third air inlet hand valve. The other end of the air source pipe distributor is connected to the first air source pipe B. A fourth air inlet hand valve is provided on the first air source pipe B near the air source pipe distributor. The input end of the second air source pipe A is connected to the output end of the first air source pipe A. A pressure transmitter is provided on the second air source pipe A near the first air source pipe A. A first air inlet hand valve is provided on the second air source pipe A near the tee.

[0006] The input end of the second gas source pipe B is connected to the output end of the first gas source pipe B. A second pressure transmitter is installed on the second gas source pipe B near the first gas source pipe B. A second air inlet manual valve is installed on the second gas source pipe B near the tee. A second one-way valve is installed on the other end of the first gas source pipe B. A second filter pressure reducing valve is installed on the first gas source pipe B and on the side of the second one-way valve. A second solenoid valve is installed on the first gas source pipe B and on the side of the fourth air inlet manual valve. A nuclear source switch valve is fixed at the other end of the top of the base. One end of the nuclear source switch valve is connected to the third gas source pipe. A tee is installed at one end of the third gas source pipe. One end of the tee is connected to the second gas source pipe A, and the other end of the tee is connected to the second gas source pipe B.

[0007] By adopting the above technical solution, this novel pressure self-testing redundant gas supply device integrates a pressure self-testing module and a redundant gas supply structure. Through dual gas supply paths and pressure monitoring, it ensures that the system can still supply gas stably when a single gas supply unit fails. This avoids the gas source switch valve opening being affected by factors such as unstable pressure, leakage, or impurities in the gas source, which helps to ensure measurement accuracy. Moreover, it can take effective emergency measures for false alarms, thereby effectively improving the safety of gas supply.

[0008] Specifically, the first and second solenoid valves are electrically connected to the DCS controller via cables. Both the first and second solenoid valves are two-position three-way solenoid valves. The first and second pressure transmitters are also electrically connected to the DCS controller via cables.

[0009] By adopting the above technical solution, the No. 1 solenoid valve and the No. 2 solenoid valve are controlled by the switch button on the DCS screen of the DCS controller, and the pressure transmitter and the pressure transmitter are connected to the DCS controller through a cable to realize the function of low pressure alarm on the DCS system.

[0010] Specifically, the No. 1 gas source pipe A, No. 1 gas source pipe B, No. 2 gas source pipe A, No. 2 gas source pipe B, No. 3 gas source pipe and tee are all made of stainless steel.

[0011] Specifically, one end of the top of the base is provided with an arc-shaped mounting seat, and both ends of one side of the arc-shaped mounting seat are provided with reserved openings.

[0012] By adopting the above technical solution, the arc-shaped mounting base can securely place the gas source pipe distributor on the top of the base, and the reserved opening facilitates the connection of the No. 1 gas source pipe A and the No. 1 gas source pipe B to the gas source pipe distributor without being obstructed.

[0013] Specifically, a mounting groove is provided at one end of the base near the nuclear source switch valve.

[0014] Specifically, one end of the gas source pipe distributor is connected to an on / off valve.

[0015] The beneficial effects of this utility model are:

[0016] (1) The pressure self-testing redundant gas supply device of this utility model has a dual gas supply system. By configuring two independent gas sources or control units, it can automatically complement each other when a single gas supply fails, thus avoiding the device from stopping operation due to a single gas supply failure.

[0017] (2) The pressure self-testing redundant gas supply device described in this utility model can reduce the inlet pressure to the set outlet pressure by adding a No. 1 filter pressure reducing valve and a No. 2 filter pressure reducing valve, and automatically maintain pressure stability by relying on gas source energy to ensure stable opening of the injection source switch valve. In addition, both the No. 1 filter pressure reducing valve and the No. 2 filter pressure reducing valve remove impurities such as particulate matter, oil, and water vapor in the gas through built-in filter screens and flow guiding devices. The filtered clean gas reduces the risk of corrosion and blockage to the injection source switch valve and gas circuit.

[0018] (3) The pressure self-test redundant gas supply device described in this utility model has a dual solenoid valve design with a No. 1 solenoid valve and a No. 2 solenoid valve, which increases the reliability of the gas circuit. Even if one solenoid valve is stuck or de-energized, the other set can still maintain normal gas supply. In an emergency, the gas supply can be cut off by the switch button on the DCS screen to shut off the source and avoid the site from being irradiated by the source.

[0019] (4) The pressure self-testing redundant air supply device described in this utility model can detect the air pressure of the gas circuit of the injection source switch valve in a timely manner by the No. 1 pressure transmitter and the No. 2 pressure transmitter. If the air pressure is lower than the set value, the DCS system will promptly alarm and remind the operator to go to the site to check the cause. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0023] Figure 3 This is a top view of the present invention.

[0024] In the diagram: 1. No. 1 Inlet Manual Valve; 2. No. 2 Inlet Manual Valve; 3. No. 1 Pressure Transmitter; 4. No. 2 Pressure Transmitter; 5. No. 1 Check Valve; 6. No. 2 Check Valve; 7. No. 1 Filter Pressure Reducing Valve; 8. No. 2 Filter Pressure Reducing Valve; 9. No. 1 Solenoid Valve; 10. No. 2 Solenoid Valve; 11. No. 3 Inlet Manual Valve; 12. No. 4 Inlet Manual Valve; 13. Gas Source Pipe Distributor; 14. Nuclear Source Switch Valve; 15. T-Way; 16. Base; 17. No. 1 Gas Source Pipe A; 18. No. 1 Gas Source Pipe B; 19. Reserved Port; 20. Mounting Slot; 21. Arc-shaped Mounting Base; 22. On / Off Valve; 23. No. 3 Gas Source Pipe; 24. No. 2 Gas Source Pipe A; 25. No. 2 Gas Source Pipe B; 26. DCS Controller. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] To improve the safety of gas supply through dual gas supply paths and pressure monitoring, such as... Figure 1-3As shown, the pressure self-testing redundant gas supply device of this utility model includes a base 16, a first pressure transmitter 3, a first check valve 5, a first filter pressure reducing valve 7, a gas source pipe distributor 13, and a nuclear source switch valve 14. The gas source pipe distributor 13 is fixed to one end of the top of the base 16. One end of the gas source pipe distributor 13 is connected to a first gas source pipe A17. A third air inlet manual valve 11 is provided on one end of the first gas source pipe A17 near the gas source pipe distributor 13. A first check valve 5 is installed on the other end of the first gas source pipe A17 and located on the first check valve 5. A filter pressure reducing valve 7 is provided on one side. A solenoid valve 9 is provided on the first air source pipe A17 and on the side of the third air inlet hand valve 11. The other end of the air source pipe distributor 13 is connected to the first air source pipe B18. A fourth air inlet hand valve 12 is provided on the first air source pipe B18 near the air source pipe distributor 13. The input end of the second air source pipe A24 is connected to the output end of the first air source pipe A17. A pressure transmitter 3 is provided on the second air source pipe A24 near the first air source pipe A17. A first air inlet hand valve 1 is provided on the second air source pipe A24 near the tee 15.

[0027] The input end of the second gas source pipe B25 is connected to the output end of the first gas source pipe B18. A second pressure transmitter 4 is installed on the end of the second gas source pipe B25 near the first gas source pipe B18. A second air inlet manual valve 2 is installed on the end of the second gas source pipe B25 near the three-way valve 15. A second one-way valve 6 is installed on the other end of the first gas source pipe B18. A second overflow valve is installed on the first gas source pipe B18, located to one side of the second one-way valve 6. The filter pressure reducing valve 8, the No. 2 solenoid valve 10 is provided on the No. 1 air source pipe B18 and on one side of the No. 4 air intake hand valve 12, the other end of the top of the base 16 is fixed with the nuclear source switch valve 14, one end of the nuclear source switch valve 14 is connected to the No. 3 air source pipe 23, one end of the No. 3 air source pipe 23 is provided with a tee 15, one end of the tee 15 is connected to the No. 2 air source pipe A24, and the other end of the tee 15 is connected to the No. 2 air source pipe B25.

[0028] In use, the dual-gas supply system can automatically complement each other in the event of a single gas supply failure by configuring two independent gas sources or control units, thus avoiding the shutdown of the device due to a single gas supply failure.

[0029] By adding filter pressure reducing valve 7 and filter pressure reducing valve 8, the inlet pressure can be reduced to the set outlet pressure, and the pressure can be automatically maintained by the gas source energy to ensure the stability of the injection source switch valve opening. In addition, filter pressure reducing valve 7 and filter pressure reducing valve 8 remove particulate matter, oil, water vapor and other impurities from the gas through built-in filter screens and flow guiding devices. The filtered clean gas reduces the risk of corrosion and blockage to the injection source switch valve and gas circuit.

[0030] The dual solenoid valve design of No. 1 solenoid valve 9 and No. 2 solenoid valve 10 increases the reliability of the gas circuit. Even if one solenoid valve is stuck or de-energized, the other set can still maintain normal gas supply. In an emergency, the gas supply can be cut off by the switch button on the DCS screen to shut off the injection source and avoid the site from being irradiated by the injection source.

[0031] Pressure transmitter 3 and pressure transmitter 4 can detect the air pressure in the air circuit of the injection source switch valve in a timely manner. If the air pressure is lower than the set value, the DCS system will promptly alarm and remind the operator to go to the site to check the cause.

[0032] For example, such as Figure 1 , Figure 3 As shown, the first solenoid valve 9 and the second solenoid valve 10 are electrically connected to the DCS controller 26 via cables. Both the first solenoid valve 9 and the second solenoid valve 10 are two-position three-way solenoid valves. The first pressure transmitter 3 and the second pressure transmitter 4 are electrically connected to the DCS controller 26 via cables.

[0033] In use, solenoid valve 9 and solenoid valve 10 are controlled by the switch buttons on the DCS screen of the DCS controller 26. Pressure transmitters 3 and 4 are connected to the DCS controller 26 via cables to realize the low pressure alarm function on the DCS system.

[0034] For example, such as Figure 1 , Figure 3 As shown, the No. 1 gas source pipe A17, No. 1 gas source pipe B18, No. 2 gas source pipe A24, No. 2 gas source pipe B25, No. 3 gas source pipe 23 and tee 15 are all made of stainless steel.

[0035] When in use, the three-way valve 15 facilitates the connection of the No. 1 gas source pipe B18 and the No. 2 gas source pipe B25 to the No. 3 gas source pipe 23, so that gas can be delivered to the nuclear source switch valve 14 through the No. 1 gas source pipe B18.

[0036] For example, such as Figure 2 As shown, one end of the top of the base 16 is provided with an arc-shaped mounting seat 21, and both ends of one side of the arc-shaped mounting seat 21 are provided with reserved openings 19.

[0037] In use, the arc-shaped mounting base 21 can securely place the gas source pipe distributor 13 on the top of the base 16, and the reserved opening 19 facilitates the connection of the first gas source pipe A17 and the first gas source pipe B18 to the gas source pipe distributor 13 without obstruction.

[0038] For example, such as Figure 2 As shown, a mounting groove 20 is provided at one end of the base 16 near the nuclear source switch valve 14.

[0039] During use, the mounting slot 20 facilitates the installation of pressure transmitter 3 (number one) and pressure transmitter 4 (number two).

[0040] For example, such as Figure 1 , Figure 3 As shown, one end of the gas source pipe distributor 13 is connected to an on / off valve 22.

[0041] When using this utility model, the operator opens the on / off valve 22 on the gas source pipe distributor 13 to deliver the functional gas into the gas source pipe distributor 13. The gas inside the gas source pipe distributor 13 can then reach the first inlet hand valve 1 after passing through the gas source pipe distributor 13, the third inlet hand valve 11, the first solenoid valve 9, the first filter pressure reducing valve 7, the first check valve 5, and the first pressure transmitter 3. The first inlet hand valve 1 can then supply gas to the nuclear source switch valve 14 through the third gas source pipe 23 and the three-way valve 15.

[0042] Furthermore, the gas supply reaches the No. 2 intake hand valve 12 through the gas source pipe distributor 13, the No. 2 solenoid valve 10, the No. 2 filter pressure reducing valve 8, the No. 2 check valve 6 and the No. 2 pressure transmitter 4, and then reaches the No. 2 intake hand valve 2. The No. 2 intake hand valve 2 can supply gas to the nuclear source switch valve 14 through the No. 2 gas source pipe B25 and the three-way valve 15.

[0043] Furthermore, in this new invention, the dual-gas supply system, by configuring two independent gas sources or control units, can automatically operate in a complementary manner when a single gas supply fails, thus avoiding the device from shutting down due to a single gas supply failure.

[0044] Furthermore, by adding filter pressure reducing valve 7 and filter pressure reducing valve 8, the inlet pressure can be reduced to the set outlet pressure, and the pressure can be automatically maintained by the gas source energy to ensure the stability of the injection source switch valve opening. In addition, filter pressure reducing valve 7 and filter pressure reducing valve 8 remove particulate matter, oil, water vapor and other impurities from the gas through built-in filter screens and flow guiding devices. The filtered clean gas reduces the risk of corrosion and blockage to the injection source switch valve and gas circuit.

[0045] Furthermore, in this new type of device, the dual solenoid valve design of solenoid valve 9 and solenoid valve 10 increases the reliability of the gas circuit. Even if one solenoid valve is stuck or de-energized, the other set can still maintain normal gas supply. In an emergency, the gas supply can be cut off by the switch button on the DCS screen to shut off the injection source and prevent the site from being irradiated by the injection source.

[0046] Furthermore, pressure transmitter 3 and pressure transmitter 4 can detect the air pressure in the gas circuit of the injection source switch valve in a timely manner. If the air pressure is lower than the set value, the DCS system will promptly alarm and remind the operator to go to the site to check the cause.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure self-checking redundant air supply device, characterized in that, The system includes a base (16), a pressure transmitter (3), a check valve (5), a filter pressure reducing valve (7), a gas supply pipe distributor (13), and a nuclear source switch valve (14). The gas supply pipe distributor (13) is fixed to one end of the top of the base (16). One end of the gas supply pipe distributor (13) is connected to a gas supply pipe A (17). A third air inlet manual valve (11) is provided at one end of the gas supply pipe A (17) near the gas supply pipe distributor (13). A check valve (5) is installed at the other end of the gas supply pipe A (17). A filter pressure reducing valve is provided on the gas supply pipe A (17) and located to the side of the check valve (5). (7) A solenoid valve (9) is provided on the first gas source pipe A (17) and on one side of the third air inlet hand valve (11). The other end of the gas source pipe distributor (13) is connected to the first gas source pipe B (18). A fourth air inlet hand valve (12) is provided on the first gas source pipe B (18) near the gas source pipe distributor (13). The input end of the second gas source pipe A (24) is connected to the output end of the first gas source pipe A (17). A pressure transmitter (3) is provided on the second gas source pipe A (24) near the first gas source pipe A (17). A first air inlet hand valve (1) is provided on the second gas source pipe A (24) near the tee (15). The input end of the second gas source pipe B (25) is connected to the output end of the first gas source pipe B (18). A second pressure transmitter (4) is provided on the second gas source pipe B (25) near the first gas source pipe B (18). A second air inlet manual valve (2) is provided on the second gas source pipe B (25) near the tee (15). A second check valve (6) is installed on the other end of the first gas source pipe B (18). A second filter pressure reducer is provided on the first gas source pipe B (18) and on one side of the second check valve (6). Valve (8), a second solenoid valve (10) is provided on the first air source pipe B (18) and located on one side of the fourth air intake hand valve (12), a nuclear source switch valve (14) is fixed at the other end of the top of the base (16), a third air source pipe (23) is connected to one end of the third air source pipe (23), a three-way valve (15) is provided at one end of the third air source pipe (23), a second air source pipe A (24) is connected to one end of the three-way valve (15), and a second air source pipe B (25) is connected to the other end of the three-way valve (15).

2. The pressure self-testing redundant gas supply device according to claim 1, characterized in that, The first solenoid valve (9) and the second solenoid valve (10) are electrically connected to the DCS controller (26) via cables. The first solenoid valve (9) and the second solenoid valve (10) are both two-position three-way solenoid valves. The first pressure transmitter (3) and the second pressure transmitter (4) are electrically connected to the DCS controller (26) via cables.

3. The pressure self-testing redundant gas supply device according to claim 1, characterized in that, The No. 1 gas source pipe A (17), No. 1 gas source pipe B (18), No. 2 gas source pipe A (24), No. 2 gas source pipe B (25), No. 3 gas source pipe (23) and tee (15) are all made of stainless steel.

4. The pressure self-testing redundant gas supply device according to claim 1, characterized in that, The base (16) has an arc-shaped mounting seat (21) at one end of its top, and both ends of the arc-shaped mounting seat (21) have reserved openings (19).

5. A pressure self-testing redundant gas supply device according to claim 1, characterized in that, The base (16) has an installation groove (20) at one end near the nuclear source switch valve (14).

6. The pressure self-testing redundant gas supply device according to claim 1, characterized in that, One end of the gas supply pipe distributor (13) is connected to an on / off valve (22).

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