CN112240820A - Gas tank leak detection and supplementary leakage device - Google Patents
Gas tank leak detection and supplementary leakage device Download PDFInfo
- Publication number
- CN112240820A CN112240820A CN202011002588.6A CN202011002588A CN112240820A CN 112240820 A CN112240820 A CN 112240820A CN 202011002588 A CN202011002588 A CN 202011002588A CN 112240820 A CN112240820 A CN 112240820A
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- Prior art keywords
- gas
- gas tank
- electromagnetic valve
- tank
- leakage
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 112
- 239000001307 helium Substances 0.000 claims abstract description 25
- 229910052734 helium Inorganic materials 0.000 claims abstract description 25
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 8
- 230000001502 supplementing effect Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a gas tank leakage detecting and supplementing device, which comprises a gas storage tank, an electromagnetic valve, a pressure gauge, a portable helium detector and a control device, wherein the gas storage tank is connected with the electromagnetic valve; the portable helium detector is used for detecting a leakage point of the gas tank and the content of helium in gas leaked by the leakage point, and calculating the gas leakage rate of the gas tank according to the content of helium in the gas leaked by the leakage point; the pressure gauge is used for monitoring and displaying the air pressure in the air box; SF is stored in the gas storage tank6Mixing with helium gas; the electromagnetic valve communicates the gas storage tank with the gas tank, and the opening and closing of the electromagnetic valve are controlled by the pressure value of the pressure gauge; the control device is in signal connection with the pressure gauge and is in control connection with the electromagnetic valve, and the control device controls the opening and closing of the electromagnetic valve according to the pressure value in the air box monitored by the pressure gauge. The whole air tightness detection process is carried out in the normal operation state of the cabinet, so that the air leakage detection process is simplified, the detection time is shortened, and the maintenance cost is reduced.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a gas tank leakage detecting and supplementing device which is used in a gas insulated switchgear and is used for detecting the leakage position and the leakage rate of a gas tank and supplementing the leakage gas in the gas tank.
Background
The gas-filled cabinet is a metal closed switch device which seals a high-voltage element in a closed shell filled with compressed gas with lower pressure, and the metal closed switch device is not influenced by the external environment due to the adoption of a closed structure, and the compressed gas with excellent performance also improves the insulativity, the arc extinguishing performance and the reliability of components. Although the inflatable cabinet integrates a plurality of advantages, the problem of air box tightness of the inflatable cabinet is not thoroughly solved.
The factors affecting the gas tank leakage include: sealing performance of gas tank welding, sealing performance of static connecting parts and auxiliary products, sealing performance of transmission parts, and design and production processes. In order to ensure the sealing performance of the gas tank, the material of the gas tank is strictly selected and subjected to laser automatic welding, the connecting part is sealed by a sealing gasket, and the transmission part is optimally designed. Nevertheless, the sealing performance of the air box may be affected during transportation and installation, and in addition, under the action of long-time alternating load during operation, various parts are abraded and position changes occur, so that the sealing performance of the air box is gradually deteriorated, and leakage occurs, even large-amplitude leakage occurs. The gas pressure of the gas box has direct influence on the insulativity of components of the gas box, and the insulativity is one of important indexes for measuring the performance of the gas-filled cabinet. The air box is leaked to cause the forced stop of the operation of the inflatable cabinet, so that the detection and maintenance are carried out, and the safety accidents such as electric leakage, explosion and the like are caused. Therefore, the airtightness of the gas tank needs to be checked. Generally, the gas tank does not leak at a high rate, only leaks slightly, but the gas tank accumulates day by day and month, and finally the gas pressure of the gas tank is lower than the set minimum pressure value, so that an alarm is generated. Under conventional state, need stop the use to aerifing the cabinet immediately, detect and maintain, cause certain loss to the user.
Disclosure of Invention
The invention aims to solve the technical problem of providing a gas tank leakage detecting and supplementing device, which can be used for rapidly detecting gas leakage of a gas tank under a normal operation state of an inflatable cabinet and is convenient for subsequent maintenance. Meanwhile, the air supply device can supplement the leaked air in the inflatable cabinet under the normal operation state of the inflatable cabinet.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a gas tank leak detection and replenishment leakage device comprising:
the portable helium detector is used for detecting the leakage point of the gas tank and the content of helium in gas leaked by the leakage point, and calculating the gas leakage rate of the gas tank according to the content of the helium in the gas leaked by the leakage point;
the pressure gauge is arranged on the air box and used for monitoring and displaying the air pressure in the air box;
a gas tank in which SF is stored6Mixing with helium gas;
the electromagnetic valve is used for communicating the gas storage tank with the gas tank, and the opening and closing of the electromagnetic valve are controlled by the pressure value of the pressure gauge;
the control device is in signal connection with the pressure gauge and is in control connection with the electromagnetic valve, and the control device controls the electromagnetic valve to be opened and closed according to the pressure value in the air box monitored by the pressure gauge.
In a preferred embodiment of the present invention, the solenoid valve has two operating states, wherein the first operating state is to communicate the air tank with the air storage tank, and the second operating state is to communicate the air tank with the outside.
The invention has the beneficial effects that: when the air tank leaks air, the electromagnetic valve is in a first working state through the control device, the air tank is communicated with the air storage tank, and SF with a specific proportion in the air storage tank6SF leaked in the cabinet in time with helium mixed gas6Make up to maintain the pressure in the cabinet within a safe rangeAnd ensures that the inflatable cabinet operates normally during the period of time, rather than immediately stopping the operation of the inflatable cabinet. In addition, when the pressure of the gas tank reaches the preset alarm pressure, the control device enables the electromagnetic valve to be in a second working state, and the gas pressure in the gas tank is released. Compared with the method that the gas is pre-filled in the gas box, the method and the device have the advantages that the gas leakage position and the gas leakage rate of the gas box are detected more accurately through the helium detector. The whole air tightness detection process is carried out under the normal operation state of the cabinet, so that the air leakage detection process is simplified, the detection time is shortened, and the maintenance cost is reduced.
Drawings
Fig. 1 is a schematic diagram of a gas tank leak detection and replenishment device according to the present invention.
Detailed Description
The invention is further described below in conjunction with the appended drawings and detailed description.
Referring to fig. 1, the gas tank leakage detecting and supplementing device shown in the figure comprises a gas storage tank 3, an electromagnetic valve 4, a pressure gauge 2, a portable helium detector 5 and a control device, wherein the gas tank 1 and the gas storage tank 3 are designed by self, and the pressure gauge 2, the electromagnetic valve 4 and the portable helium detector 5 are outsourcing parts. The solenoid valve 4 has two operating states, wherein the first operating state is to communicate the gas tank 1 with the gas storage tank 3, and the second operating state is to communicate the gas tank 1 with the outside.
The portable helium detector 5 is used for detecting potential leakage points of the gas tank 1, and the pressure gauge 2 is arranged on the gas tank 1 and used for monitoring and displaying the air pressure in the gas tank 1; the gas storage tank 3 is arranged on the gas tank 1 through an electromagnetic valve 4, and the opening and closing of the electromagnetic valve 4 are controlled by the pressure value of the pressure gauge 2. SF is stored in the gas storage tank 36Mixed with helium.
And a control device (not shown in the figure) is in signal connection with the pressure gauge 2 and is in control connection with the electromagnetic valve 4, and the control device controls the opening and closing of the electromagnetic valve 4 according to the pressure value in the air tank 1 monitored by the pressure gauge 2.
The testing principle of the gas tank leakage detecting and supplementing device is as follows: when the gas tank 1 leaks, the pressure inside the gas tank 1 changes, and the pressure changesWhen the pressure value in the table 2 is lower than the set minimum air pressure value, the control device sends an electric signal to control the communication of the electromagnetic valve 4, so that the electromagnetic valve 4 is in a first working state, and SF in the air storage tank 36With the helium gas mixture pressure be greater than gas pressure in the gas tank 1, under the pressure difference effect, the gas mixture in the gas holder 3 can get into in the gas tank 1, because the gas is constantly gushed in the gas holder 3, gas pressure promotes to some extent in the gas tank 1, when the pressure value reached gas tank 1 pressure upper limit, controlling means signals of telecommunication once more, closes solenoid valve 4, makes the pressure of gas tank 1 maintain in safe within range. When the pressure of the gas box 1 reaches the preset alarm pressure, the control device enables the electromagnetic valve 4 to be in the second working state, and the gas pressure in the gas box 1 is released.
Because the mixed gas contains inert gas helium, the content of the helium in the leaked gas can be detected by using the portable helium detector 5, and the gas leakage rate of the gas box is calculated according to the content of the helium in the leaked gas at the leakage point. Compared with the gas which is pre-filled in the gas tank 1, the gas leakage position and the gas leakage rate of the gas tank 1 are detected by the helium detector 5, and the detection is more accurate.
The whole air tightness detection process is carried out in the normal operation state of the cabinet, so that the air leakage detection process is simplified, the detection time is shortened, and the maintenance cost is reduced.
Claims (2)
1. The utility model provides a gas tank leak hunting and supplementary leakage device which characterized in that includes:
the portable helium detector is used for detecting the leakage point of the gas tank and the content of helium in gas leaked by the leakage point, and calculating the gas leakage rate of the gas tank according to the content of the helium in the gas leaked by the leakage point;
the pressure gauge is arranged on the air box and used for monitoring and displaying the air pressure in the air box;
a gas tank in which SF is stored6Mixing with helium gas;
the electromagnetic valve is used for communicating the gas storage tank with the gas tank, and the opening and closing of the electromagnetic valve are controlled by the pressure value of the pressure gauge;
the control device is in signal connection with the pressure gauge and is in control connection with the electromagnetic valve, and the control device controls the electromagnetic valve to be opened and closed according to the pressure value in the air box monitored by the pressure gauge.
2. The gas tank leak detection and replenishment leak detection device of claim 1, wherein said solenoid valve has two operating states, a first operating state communicating said gas tank with said gas tank, and a second operating state communicating said gas tank with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011002588.6A CN112240820A (en) | 2020-09-22 | 2020-09-22 | Gas tank leak detection and supplementary leakage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011002588.6A CN112240820A (en) | 2020-09-22 | 2020-09-22 | Gas tank leak detection and supplementary leakage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112240820A true CN112240820A (en) | 2021-01-19 |
Family
ID=74171086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011002588.6A Pending CN112240820A (en) | 2020-09-22 | 2020-09-22 | Gas tank leak detection and supplementary leakage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112240820A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330261A (en) * | 2023-09-27 | 2024-01-02 | 深圳市康泰电气设备有限公司 | Switch equipment inflating cabinet air leakage detection device |
-
2020
- 2020-09-22 CN CN202011002588.6A patent/CN112240820A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117330261A (en) * | 2023-09-27 | 2024-01-02 | 深圳市康泰电气设备有限公司 | Switch equipment inflating cabinet air leakage detection device |
| CN117330261B (en) * | 2023-09-27 | 2024-06-04 | 深圳市康泰电气设备有限公司 | Switch equipment inflating cabinet air leakage detection device |
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