CN220187946U - Alarm device for on-line detection of gas leakage of gas pressure reducing valve or pressure reducing valve bank - Google Patents
Alarm device for on-line detection of gas leakage of gas pressure reducing valve or pressure reducing valve bank Download PDFInfo
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- CN220187946U CN220187946U CN202320951803.XU CN202320951803U CN220187946U CN 220187946 U CN220187946 U CN 220187946U CN 202320951803 U CN202320951803 U CN 202320951803U CN 220187946 U CN220187946 U CN 220187946U
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- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
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Abstract
The utility model discloses an alarm device for detecting gas leakage of a gas pressure reducing valve or a pressure reducing valve bank on line, which comprises the gas pressure reducing valve or the pressure reducing valve bank and pipelines, wherein the gas pressure reducing valve or the pressure reducing valve bank is connected with the pipelines, the two pipelines at the two ends of a first gas inlet and a first gas outlet of the gas pressure reducing valve or the pressure reducing valve bank are respectively connected with the alarm device through a second branch pipeline and a first branch pipeline, the alarm device comprises a differential pressure controller, a power supply, an alarm and a KA intermediate relay, the power supply, the alarm, the differential pressure controller and the KA intermediate relay are sequentially connected through cables, the KA intermediate relay is externally connected with a signal wire or a remote transmission signal, and alarm information is displayed in a main control room or connected with a PLC control system; and a hand valve is arranged on the second branch pipeline. The utility model utilizes the gas leakage alarm device which is connected to the gas inlet and the gas outlet of the traditional gas pressure reducing valve or the pneumatic valve group to realize on-line monitoring, avoid medium energy waste and ensure the normal operation of equipment.
Description
Technical Field
The utility model relates to the technical field of alarm devices, in particular to an alarm device for detecting gas leakage of a gas pressure reducing valve or a pressure reducing valve group on line.
Background
In recent years, with the strong development of basic industry, valves present a high demand situation in the field of industrial application. The valve industry is used as basic equipment of general parts and is widely applied to the fields of petroleum, chemical industry, electric power, metallurgy, environmental protection, urban construction and the like.
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure by adjusting and automatically keeps the outlet pressure stable by depending on the energy of the medium. From the viewpoint of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, namely, by changing the throttling area, the flow speed and the kinetic energy of fluid are changed, and different pressure losses are caused, so that the aim of reducing pressure is achieved. The gas pressure reducing valve can control the pressure of the gas conveyed by the pipeline, and the gas pressure reducing valve has the advantage of ensuring the safety of conveying a gas medium. The pressure control in the pipeline is ensured to be within a specified range, and smooth gas transmission can be ensured, so that the application frequency of the gas pressure reducing valve or the pressure reducing valve group in a plurality of pipelines for gas medium transmission is very high, but at present, a plurality of mechanical gas pressure reducing valves are not provided with alarm devices, the gas leakage condition frequently occurs in the use process, and the pressure meter in the pipeline cannot timely find out the pressure reduction or determine the gas leakage point, thereby not only affecting production, but also causing energy medium waste.
The utility model discloses a chinese patent number CN 217355732U gas relief pressure valve is through setting up the spliced pole, is connected with the filter screen through the spliced pole, and when clockwise rotation swivel becket, the spliced pole can take the filter screen to expand, when needs have improved gas circulation efficiency, anticlockwise rotation swivel becket makes the filter screen by shrink together to prevent that the filter screen from obstructing the circulation of gas, improve gas circulation. However, the gas pressure reducing valve is not provided with an alarm device, and can not be timely mastered and processed after leakage.
In summary, an alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line is developed, remote monitoring is achieved, the gas leakage position can be timely mastered and accurately determined when the gas pressure reducing valve or the pressure reducing valve bank leaks, maintenance efficiency is improved, medium energy waste is avoided, and normal operation of equipment is guaranteed to be the subject faced by relevant technicians.
Disclosure of Invention
The utility model aims to provide an alarm device for detecting gas leakage of a gas pressure reducing valve or a pressure reducing valve bank on line, remote monitoring is realized through signal transmission, and the running condition of equipment is observed in a main control room or a computer display screen; the gas leakage position can be mastered in time and accurately determined when the gas of the gas pressure reducing valve or the pressure reducing valve group leaks, so that the medium energy waste is avoided, the normal operation of the equipment is ensured, and the daily use is not required.
The problems of the utility model are solved by the following technical proposal:
the alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line comprises the gas pressure reducing valve or the pressure reducing valve bank and pipelines, wherein the gas pressure reducing valve or the pressure reducing valve bank is connected with the pipelines, the two pipelines at the two ends of a first gas inlet and a first gas outlet of the gas pressure reducing valve or the pressure reducing valve bank are connected with the alarm device through a second branch pipeline and a first branch pipeline respectively, the alarm device comprises a pressure difference controller, a power supply, an alarm and a KA intermediate relay, the power supply, the alarm, the pressure difference controller and the KA intermediate relay are sequentially connected through cables, the KA intermediate relay is externally connected with a signal wire or a remote transmission signal, and alarm information is displayed in a main control room or connected with a PLC control system; and a hand valve is arranged on the second branch pipeline.
The alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line comprises a pressure difference controller, a pressure difference controller and a pressure difference controller, wherein the pressure difference controller comprises an air cylinder, a metal ball, a spring, a contact piece and a sealing gasket; the inflator is a cylinder with a second air inlet and a second air outlet, a metal ball is arranged in the inflator, the metal ball is close to the second air inlet and connected with a cable through a spring, a contact piece is arranged on the inflator, which is close to the second air outlet, the contact piece is connected with the other end of the cable, and two ends of the cable respectively penetrate through sealing gaskets of two ports of the inflator to be connected with a power supply.
According to the alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line, the metal ball is arranged between the second gas inlet and the second gas outlet.
According to the alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line, the metal ball is in clearance fit with the inflator.
According to the alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line, the contact piece is a metal piece with good conductivity.
According to the alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line, the pressure gauge is arranged on the second branch pipeline between the hand valve and the second air inlet.
According to the alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line, the sealing gasket can be replaced by an aviation plug.
Advantageous effects
The alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line, provided by the utility model, utilizes the fact that the gas leakage alarm device is accessed into the gas inlet and the gas outlet of the traditional gas pressure reducing valve or the pneumatic valve bank, and meanwhile, an intermediate relay is used, so that on-off signals of a switch are increased, on-line monitoring is realized, the gas leakage position is timely mastered and accurately determined, medium energy waste is avoided, maintenance efficiency is improved, and normal operation of equipment is ensured.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of the structure of the differential pressure controller of the present utility model.
The reference numerals in the drawings are respectively as follows: 1. a pressure reducing valve or a pressure reducing valve group, 2, a first air inlet, 3, a first air outlet, 4, a hand valve, 5, a differential pressure controller, 6, a metal ball, 7, a first branch pipeline, 8, an air cylinder, 9, a spring, 10, a sealing gasket, 11, a contact piece, 12 and an alarm, 13, a power supply, 14, KA intermediate relays, 15, pipelines, 16, a PLC control system, 17, a normally open contact of the KA intermediate relays, 18, a cable, 19, a second air inlet, 20, a second air outlet, 21, a second branch pipeline, 22, a pressure gauge, 23 and a signal wire.
Detailed Description
Referring to fig. 1, an alarm device for detecting gas leakage of a gas pressure reducing valve or a pressure reducing valve group on line comprises a gas pressure reducing valve or a pressure reducing valve group 1 and a pipeline 15, wherein the gas pressure reducing valve or the pressure reducing valve group 1 is connected to the pipeline 15, and on two end pipelines 15 of a first gas inlet 2 and a first gas outlet 3 of the gas pressure reducing valve or the pressure reducing valve group 1, the alarm device is connected to the alarm device through a second branch pipeline 21 and a first branch pipeline 7 respectively, the alarm device comprises a differential pressure controller 5, a power supply 13, an alarm 12 and a KA intermediate relay 14, the power supply 13, the alarm 12, the differential pressure controller 5 and the KA intermediate relay 14 are sequentially connected through a cable 18, and the KA intermediate relay 14 is externally connected with a signal line 23 or a remote transmission signal to display alarm information in a main control room or connected to a PLC control system 16; the second branch pipe 21 is provided with a hand valve 4. The principle is that a hand valve is regulated to enable the pressure at the second air inlet end of a differential pressure controller to be consistent with the normal pressure value of a first air outlet of a pipeline, when the detected gas pressure reducing valve or a pressure reducing valve group leaks gas, the pressure at the air outlet is reduced, the pressure difference is instantly generated between the air inlet and the air outlet of the differential pressure controller, the gas pushes a spring and a metal ball, the metal ball is contacted with a contact piece, a circuit is connected, a power supply drives an alarm to alarm, and an alarm sound is given, meanwhile, a normally open contact of a KA intermediate relay is closed under the action of electromagnetic force, and an alarm signal is transmitted to a main control room or is connected to a PLC control system through a signal wire.
Referring to fig. 2, the differential pressure controller 5 includes an air cylinder 8, a metal ball 6, a spring 9, a contact piece 11, and a gasket 10; the inflator 8 is a cylinder with a second air inlet 19 and a second air outlet 20, the metal ball 6 is arranged in the inflator 8, the end, close to the second air inlet 19, of the metal ball 6 is connected with the cable 18 through the spring 9, the end, close to the second air outlet 20, of the inflator 8 is provided with the contact piece 11, the contact piece 11 is connected with the other end of the cable 18, and two ends of the cable 18 respectively penetrate through sealing gaskets 10 at two ports of the inflator 8 to be connected with the power supply 13. The sensitivity of the differential pressure controller is modified by adjusting the length of the spring, and the leakage air pressure alarm value is adjusted, so that the differential pressure controller is suitable for pipelines with different pressures.
Referring to fig. 2, the metal ball 6 is disposed between the second air inlet 19 and the second air outlet 20. The different positions of the metal ball are respectively stressed by the pressure of the second air inlet and the pressure of the second air outlet.
Referring to fig. 2, the metal ball 6 is in clearance fit with the air cylinder 8. The metal ball can move in the inflator.
Referring to fig. 2, the contact 11 is a metal sheet with good electrical conductivity. The metal balls form a circuit path when contacting the contact piece.
Referring to fig. 1, a pressure gauge 22 is provided on the second branch pipe 21 between the hand valve 4 and the second air inlet 19. And the air inlet pressure of the pressure difference controller is conveniently read.
Referring to fig. 1, the gasket 10 may also be replaced with an aviation plug.
Claims (7)
1. The utility model provides an alarm device of on-line measuring gas pressure reducing valve or pressure reducing valve group gas leakage, includes gas pressure reducing valve or pressure reducing valve group (1) and pipeline (15), its characterized in that, gas pressure reducing valve or pressure reducing valve group (1) inserts pipeline (15), on first air inlet (2) and the both ends pipeline (15) of first gas outlet (3) of gas pressure reducing valve or pressure reducing valve group (1), inserts alarm device through second branch pipeline (21) and first branch pipeline (7) respectively, alarm device includes pressure differential controller (5), power (13), alarm (12) and KA intermediate relay (14), power (13), alarm (12), pressure differential controller (5) and KA intermediate relay (14) are connected gradually through cable (18), and KA intermediate relay (14) external signal line (23) or remote signal show alarm information at the master control room or insert PLC control system (16); the second branch pipeline (21) is provided with a hand valve (4).
2. The alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line according to claim 1, wherein the pressure difference controller (5) comprises a gas cylinder (8), a metal ball (6), a spring (9), a contact piece (11) and a sealing gasket (10); the inflator (8) is a cylinder with a second air inlet (19) and a second air outlet (20), a metal ball (6) is arranged in the inflator (8), the end, close to the second air inlet (19), of the metal ball (6) is connected with a cable (18) through a spring (9), the end, close to the second air outlet (20), of the inflator (8) is provided with a contact piece (11), the contact piece (11) is connected with the other end of the cable (18), and two ends of the cable (18) respectively penetrate through sealing gaskets (10) at two ports of the inflator (8) to be connected with a power supply (13).
3. An alarm device for on-line detection of gas leakage of a gas pressure reducing valve or valve block according to claim 2, said metal ball (6) being arranged between a second gas inlet (19) and a second gas outlet (20).
4. An alarm device for detecting gas leakage of a gas reducing valve or a reducing valve group on line according to claim 3, wherein the metal ball (6) is in clearance fit with the gas cylinder (8).
5. The alarm device for detecting gas leakage of a gas pressure reducing valve or a pressure reducing valve group on line according to claim 4, wherein the contact piece (11) is a metal piece with good electrical conductivity.
6. The alarm device for detecting the gas leakage of the gas pressure reducing valve or the pressure reducing valve bank on line according to claim 5, wherein a pressure gauge (22) is arranged on a second branch pipeline (21) between the hand valve (4) and the second gas inlet (19).
7. An alarm device for on-line detection of gas leaks in gas pressure reducing valves or valves according to claim 6, said gasket (10) being replaced by an aviation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320951803.XU CN220187946U (en) | 2023-04-25 | 2023-04-25 | Alarm device for on-line detection of gas leakage of gas pressure reducing valve or pressure reducing valve bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320951803.XU CN220187946U (en) | 2023-04-25 | 2023-04-25 | Alarm device for on-line detection of gas leakage of gas pressure reducing valve or pressure reducing valve bank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220187946U true CN220187946U (en) | 2023-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320951803.XU Active CN220187946U (en) | 2023-04-25 | 2023-04-25 | Alarm device for on-line detection of gas leakage of gas pressure reducing valve or pressure reducing valve bank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220187946U (en) |
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2023
- 2023-04-25 CN CN202320951803.XU patent/CN220187946U/en active Active
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