CN204495519U - The leak detection system of safety valve - Google Patents

The leak detection system of safety valve Download PDF

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Publication number
CN204495519U
CN204495519U CN201520060519.9U CN201520060519U CN204495519U CN 204495519 U CN204495519 U CN 204495519U CN 201520060519 U CN201520060519 U CN 201520060519U CN 204495519 U CN204495519 U CN 204495519U
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China
Prior art keywords
safety valve
measured
leak detection
drain port
gas
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CN201520060519.9U
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Chinese (zh)
Inventor
夏俊辉
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The utility model provides a kind of leak detection system of safety valve to be measured, comprising: feeder, is connected with the air intake opening of safety valve to be measured; First detects gas circuit, is connected, comprises the first baroceptor, for detecting the air pressure of outer drain port with safe outer drain port to be measured; Second detects gas circuit, is connected, comprises the second baroceptor, for detecting the air pressure of interior drain port with drain port in safety valve to be measured.According to the leak detection system of safety valve to be measured of the present utility model, by passing into gas in safety valve to be measured, baroceptor detects the outer drain port of safety valve to be measured and the pressure of interior drain port respectively, by the stability of the pressure of the outer drain port that detects and interior drain port, judge whether this safety valve to be measured exists leakage situation.Detected the leakage situation of valve by the mode of this air pressure, alleviate the labour intensity of operator, also improve detection efficiency simultaneously.

Description

The leak detection system of safety valve
Technical field
The utility model relates to the leak detection technology field of valve, in particular to a kind of leak detection system of safety valve.
Background technology
Whether air pressure valve series products is the parts that contemporary manufacturing industry generally uses, and valve security performance is related to the safety of each contactee, therefore need to detect valve and leak.Current industry all adopts hydraulic pressure detect the leakage situation of air pressure valve series products, but this detection mode labour intensity is large, efficiency is low.
Utility model content
The utility model aims to provide a kind of leak detection system of safety valve, to solve the leak case being detected valve in prior art by hydraulic pressure, large, the inefficient technical matters of labour intensity.
The utility model provides a kind of leak detection system of safety valve, comprising: feeder, is connected with the air intake opening of safety valve to be measured; First detects gas circuit, is connected, comprises the first baroceptor, for detecting the air pressure of described outer drain port with the outer drain port of described safety valve to be measured; Second detects gas circuit, is connected, comprises the second baroceptor, for detecting the air pressure of described interior drain port with drain port in described safety valve to be measured.
Further, the leak detection system of described safety valve to be measured also comprises support, arrange fixed air circulation guidance tape on the bracket, and to circulate the corresponding mobile gas channel plate arranged of guidance tape with described fixed air; Described mobile gas channel plate relatively described fixed air circulation guidance tape is removable with fixing described safety valve to be measured.
Further, described leak detection system also comprises and can promote described mobile gas channel plate described safety valve to be measured is circulated with described mobile gas channel plate and described fixed air respectively thrust unit that guidance tape seals.
Further, described thrust unit is jacking cylinder.
Further, described fixed air circulation guidance tape is provided with air supply channel, described air supply channel has the total inlet channel be communicated with described feeder and at least one point of gas passage be connected with described total inlet channel, and each described point of gas passage correspondence connects the air intake opening of a described safety valve to be measured.
Further, described mobile gas channel plate is multiple, point gas channel setting described in each corresponding one of described mobile gas channel plate.
Further, described first detection gas circuit and described second detects gas circuit and is arranged on described mobile gas channel plate.
Further, described feeder comprises source of the gas and at least one pressure regulation branch road, the output pipe of described source of the gas has the first output node, the input end of at least one pressure regulation branch road described is connected on described first output node, and the output terminal of at least one pressure regulation branch road described is connected with the air intake opening of described safety valve to be measured.
Further, described feeder also comprises the joint that confluxes, and the output terminal of all described pressure regulation branch roads is connected with the air intake opening of the described joint that confluxes, described in the conflux gas outlet of joint be connected with the air intake opening of described safety valve to be measured.
Further, each described pressure regulation branch road comprises pressure regulator valve and connects to control the operation valve of described pressure regulation branch road with described pressure regulator valve.
According to the leak detection system of safety valve of the present utility model, by passing into gas in safety valve to be measured, baroceptor detects the outer drain port of safety valve to be measured and the pressure of interior drain port respectively, by the stability of the pressure of the outer drain port that detects and interior drain port, judge whether this safety valve to be measured exists leakage situation.Detected the leakage situation of valve by the mode of this air pressure, alleviate the labour intensity of operator, also improve detection efficiency simultaneously.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to safety valve of the present utility model;
Fig. 2 is the detection pneumatic diagram of the leak detection system according to safety valve of the present utility model;
Fig. 3 is the structural representation of the leak detection system according to safety valve of the present utility model;
Fig. 4 is the structural representation according to fixed air circulation guidance tape of the present utility model;
Fig. 5 is the structural representation according to mobile gas channel plate of the present utility model.
Description of reference numerals:
1, safety valve to be measured; 11, air intake opening; 12, outer drain port; 13, interior drain port; 21, source of the gas; 22, pressure regulator valve; 23, operation valve; 25, pressure charging valve; 26, pneumatic three elements; 27, conflux joint; 28, gauge tap; 31, the first baroceptor; 32, the first pipeline; 41, the second baroceptor; 42, second pipe; 50, support; 60, fixed air circulation guidance tape; 61, total inlet channel; 62, gas passage is divided; 70, mobile gas channel plate; 81, jacking cylinder; 82, jacking block.
Embodiment
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 1 to Figure 3, according to the leak detection system of safety valve of the present utility model, comprising: feeder, be connected with the air intake opening 11 of safety valve 1 to be measured; First detects gas circuit, is connected, comprises the first baroceptor 31, for detecting the air pressure of outer drain port 12 with the outer drain port 12 of safety valve 1 to be measured; Second detects gas circuit, is connected, comprises the second baroceptor 41, for detecting the air pressure of interior drain port 13 with drain port 13 in safety valve 1 to be measured.According to the leak detection system of safety valve to be measured of the present utility model, by passing into gas in safety valve 1 to be measured, baroceptor detects the outer drain port 12 of safety valve 1 to be measured and the pressure of interior drain port 13 respectively, by the stability of the pressure of the outer drain port 12 that detects and interior drain port 13, judge whether this safety valve 1 to be measured exists leakage situation.Detected the leakage situation of valve by the mode of this air pressure, alleviate the labour intensity of operator, also improve detection efficiency simultaneously.
Particularly, feeder provides gas for the safety valve to be measured 1 that need detect.In order to the accuracy of detection architecture, the gas that feeder provides needs a constant pressure.Feeder comprises source of the gas 21 and at least one pressure regulation branch road.The output pipe of source of the gas 21 can be provided with switch, pressure charging valve 25 and pneumatic three elements 26, the air-flow on switch control rule source of the gas 21 output pipe; Pressure charging valve 25 increases the air pressure on output pipe; Pressure regulator valve 22 can carry out voltage stabilizing to source of the gas 21, makes source of the gas 21 be in steady state, can reduce because of the damage to the hardware such as valve or actuator during source of the gas 21 pressure fluctuations; It is clean that filtrator is used for source of the gas 21, can moisture content in filtering compressed air, avoids moisture content with gas access to plant.Oil sprayer can lubricate body movement parts, can lubricate, greatly extend the serviceable life of body to the parts of inconvenient apply oil.The output pipe of source of the gas 21 also has output node A, and output node A arranges the downstream from pneumatic three elements 26.The input end of all pressure regulation branch roads be connected on output node A, the output terminal of all pressure regulation branch roads is connected with the air intake opening 11 of safety valve 1 to be measured, and pressure regulation branch road is for regulating the pressure of gas circuit.
Preferably, in order to detect safety valve 1 to be measured leakage situation under different air pressure conditions, pressure regulation branch road can be set to multiple, as three, four, the pressure on each pressure regulation branch road arranges all not identical.In order to realize detecting safety valve 1 to be measured under different air pressure conditions, each pressure regulation branch road comprises pressure regulator valve 22 and connects to control the operation valve 23 of pressure regulation branch road with pressure regulator valve 22; When the leakage situation of safety valve 1 to be measured under needing to detect a certain set pressure, the operation valve 23 of this pressure regulation branch road can be opened, the operation valve 23 of other pressure regulation branch roads is closed.In the present embodiment, operation valve 23 is two-position two-way solenoid valve.
Feeder also comprises the joint 27 that confluxes, and the output terminal of all pressure regulation branch roads is connected with the air intake opening of the joint 27 that confluxes, and the gas outlet of the joint 27 that confluxes is connected with the air intake opening 11 of safety valve 1 to be measured.Namely make the gas of all pressure regulation branch roads all flow to the air intake opening 11 of safety valve 1 to be measured from the joint 27 that confluxes, the gas comparing each pressure regulation branch road is communicated with the air intake opening 11 of safety valve 1 to be measured separately, and structure is simple.In order to the air-flow between the gas outlet of the joint 27 that controls to conflux and the air intake opening 11 of safety valve to be measured 1, between the gas outlet and the air intake opening 11 of safety valve to be measured 1 of the joint 27 that confluxes, be also provided with gauge tap 28.
The first baroceptor 31 that first detection gas circuit comprises the air pressure for detecting outer drain port 12 and the first pipeline 32, first baroceptor 31 be connected with the outer drain port 12 of safety valve 1 to be measured are arranged on the first pipeline 32.
The second baroceptor 41 that second detection gas circuit comprises the air pressure for detecting interior drain port 13 and second pipe 42, second baroceptor 41 be connected with drain port 13 in safety valve 1 to be measured are arranged on second pipe 42.
The stability of the atmospheric pressure value detected according to the first baroceptor 31 and the second baroceptor 41 judges whether to there is leakage phenomenon.When under a certain set pressure, the atmospheric pressure value all comparatively stability that the first baroceptor 31 and the second baroceptor 41 detect, then illustrate that this safety valve does not exist leakage; As the first baroceptor 31 and the second baroceptor 41 detect atmospheric pressure value existence fluctuation, then illustrate this safety valve exist leak.
As shown in Figures 3 to 5, in the present embodiment, the leak detection system of safety valve to be measured also comprises support 50, the fixed air circulation guidance tape 60 be arranged on support 50, and to circulate the corresponding mobile gas channel plate 70 arranged of guidance tape 60 with fixed air; Mobile gas channel plate 70 relatively fixed air circulation guidance tape 60 is removable with fixing safety valve 1 to be measured.Safety valve 1 to be measured can be arranged between fixed air circulation guidance tape 60 and mobile gas channel plate 70.Fixed air circulation guidance tape 60 is provided with air supply channel on being, air supply channel has total inlet channel 61 of being communicated with feeder and at least one point of gas passage 62 be connected with total inlet channel 61, and each point of gas passage 62 correspondence connects the air intake opening 11 of a safety valve 1 to be measured.Total inlet channel 61 on fixed air circulation guidance tape 60 and point gas passage 62 can be the inside being arranged on fixed air circulation guidance tape 60, also can be to be fixed on fixed air circulation guidance tape 60 by pipeline.Mobile gas channel plate 70 is multiple, and the corresponding point of gas passage 62 of each mobile gas channel plate 70 is arranged.Certainly, in other examples, multiple mobile gas channel plate 70 can be interconnected on one-tenth one entire plate.First detection gas circuit and second detects gas circuit and is arranged on mobile gas channel plate 70.
In order to improve the impermeability that safety valve 1 to be measured and fixed air circulate between guidance tape 60 and mobile gas channel plate 70, at the position that the outlet of point gas passage 62 of fixed air circulation guidance tape 60, mobile gas channel are connected with interior drain port 13 with outer drain port 12, be provided with O-ring seal.
In order to safety valve 1 to be measured being sealedly connected between fixed air circulation guidance tape 60 and mobile gas channel plate 70, leak detection system also comprises promoting mobile gas channel plate 70 make safety valve 1 to be measured circulate with mobile gas channel plate 70 and fixed air respectively thrust unit that guidance tape 60 seals, circulates between guidance tape 60 and mobile gas channel plate 70 safety valve 1 to be measured is close-coupled at fixed air by thrust unit.In the present embodiment, fixed air circulation guidance tape 60 is horizontally disposed with, and mobile gas channel plate 70 is arranged on the below of fixed air circulation guidance tape 60, and thrust unit is jacking cylinder 81, and structure is simple and operate more convenient.Point gas passage 62 of guidance tape 60 of the air intake opening 11 of safety valve 1 to be measured and fixed air being circulated is connected, outer drain port 12 and first detects gas circuit and is communicated with, interior drain port 13 and second detects gas circuit and is communicated with, then jacking cylinder 81 promotes mobile gas channel plate 70 and up moves, coordinate closely safety valve 1 to be measured and fixed air are circulated between guidance tape 60 and mobile gas channel plate 70, to improve the sealing that safety valve 1 to be measured and fixed air circulate between guidance tape 60 and mobile gas channel plate 70, to improve the accuracy of detection.Thrust unit also can comprise jacking block 82, and jacking cylinder 81 promotes mobile gas channel plate 70 again after promoting jacking block 82.In other embodiments, fixed air circulation guidance tape 60 also can vertically be arranged, mobile gas channel plate 70 is arranged on the side of fixed air circulation guidance tape 60, and thrust unit other can promote the mechanism of mobile gas channel plate 70 for the cylinder of piston side-to-side movement or hydraulic cylinder etc.
In order to improve the accuracy of detection, improving the precision detected, all adopting copper pipe from pressure regulator valve 22 gas circuit out.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
According to the leak detection system of safety valve of the present utility model, by passing into gas in safety valve 1 to be measured, baroceptor detects the outer drain port 12 of safety valve 1 to be measured and the pressure of interior drain port 13 respectively, by the stability of the pressure of the outer drain port 12 that detects and interior drain port 13, judge whether this safety valve 1 to be measured exists leakage situation.Detected the leakage situation of valve by the mode of this air pressure, alleviate the labour intensity of operator, also improve detection efficiency simultaneously.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (10)

1. a leak detection system for safety valve, is characterized in that, comprising:
Feeder, is connected with the air intake opening (11) of safety valve to be measured (1);
First detects gas circuit, is connected, comprises the first baroceptor (31), for detecting the air pressure of described outer drain port (12) with the outer drain port (12) of described safety valve to be measured (1);
Second detects gas circuit, is connected, comprises the second baroceptor (41), for detecting the air pressure of described interior drain port (13) with the interior drain port (13) of described safety valve to be measured (1).
2. the leak detection system of safety valve according to claim 1, is characterized in that,
The leak detection system of described safety valve to be measured (1) also comprises support (50), fixed air circulation guidance tape (60) be arranged on described support (50), and to circulate the corresponding mobile gas channel plate (70) arranged of guidance tape (60) with described fixed air;
Described mobile gas channel plate (70) relatively described fixed air circulation guidance tape (60) is removable with fixing described safety valve to be measured (1).
3. the leak detection system of safety valve according to claim 2, is characterized in that,
Described leak detection system also comprises can promote described mobile gas channel plate (70) described safety valve to be measured (1) is circulated with described mobile gas channel plate (70) and described fixed air respectively thrust unit that guidance tape (60) seals.
4. the leak detection system of safety valve according to claim 3, is characterized in that,
Described thrust unit is jacking cylinder.
5. the leak detection system of safety valve according to claim 2, is characterized in that,
Described fixed air circulation guidance tape (60) is provided with air supply channel, described air supply channel has the total inlet channel (61) be communicated with described feeder and at least one point of gas passage (62) be connected with described total inlet channel (61), and each described point of gas passage (62) correspondence connects the air intake opening (11) of a described safety valve to be measured (1).
6. the leak detection system of safety valve according to claim 5, is characterized in that,
Described mobile gas channel plate (70) is for multiple, and described in each corresponding one of described mobile gas channel plate (70), point gas passage (62) is arranged.
7. the leak detection system of the safety valve according to any one of claim 2 to 5, is characterized in that,
Described first detection gas circuit and described second detects gas circuit and is arranged on described mobile gas channel plate (70).
8. the leak detection system of safety valve according to claim 1, is characterized in that,
Described feeder comprises source of the gas (21) and at least one pressure regulation branch road, the output pipe of described source of the gas (21) has the first output node, the input end of at least one pressure regulation branch road described is connected on described first output node, and the output terminal of at least one pressure regulation branch road described is connected with the air intake opening (11) of described safety valve to be measured (1).
9. the leak detection system of safety valve according to claim 8, is characterized in that,
Described feeder also comprises the joint that confluxes (27), the output terminal of all pressure regulation branch roads is connected with the air intake opening (11) of the described joint that confluxes (27), described in the conflux gas outlet of joint (27) be connected with the air intake opening (11) of described safety valve to be measured (1).
10. the leak detection system of safety valve according to claim 9, is characterized in that,
Each described pressure regulation branch road comprises pressure regulator valve (22) and connects to control the operation valve (23) of described pressure regulation branch road with described pressure regulator valve (22).
CN201520060519.9U 2015-01-28 2015-01-28 The leak detection system of safety valve Active CN204495519U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092174A (en) * 2015-08-14 2015-11-25 中国石油化工股份有限公司 System for detecting gas tightness of compressed natural gas dispenser
CN105115676A (en) * 2015-08-14 2015-12-02 中国石油化工股份有限公司 A compressed natural gas dispenser hydrostatic pressure detection system
CN108302094A (en) * 2017-12-11 2018-07-20 广州瑞立科密汽车电子股份有限公司 Internal leakage of hydraulic valve detection device and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092174A (en) * 2015-08-14 2015-11-25 中国石油化工股份有限公司 System for detecting gas tightness of compressed natural gas dispenser
CN105115676A (en) * 2015-08-14 2015-12-02 中国石油化工股份有限公司 A compressed natural gas dispenser hydrostatic pressure detection system
CN108302094A (en) * 2017-12-11 2018-07-20 广州瑞立科密汽车电子股份有限公司 Internal leakage of hydraulic valve detection device and method
CN108302094B (en) * 2017-12-11 2020-01-17 广州瑞立科密汽车电子股份有限公司 Hydraulic valve internal leakage detection device and method

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