CN209992127U - Vacuum box leak detection system capable of recovering helium without oil - Google Patents
Vacuum box leak detection system capable of recovering helium without oil Download PDFInfo
- Publication number
- CN209992127U CN209992127U CN201921160955.8U CN201921160955U CN209992127U CN 209992127 U CN209992127 U CN 209992127U CN 201921160955 U CN201921160955 U CN 201921160955U CN 209992127 U CN209992127 U CN 209992127U
- Authority
- CN
- China
- Prior art keywords
- valve
- air inlet
- communicated
- oil
- helium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a can not have vacuum chamber leak hunting system of oil recovery helium includes vacuum chamber and work piece, the work piece is located in the vacuum chamber, the business turn over gas port of work piece communicates the gas outlet of overhead tank, the gas outlet of the first air inlet intercommunication helium source of overhead tank, the second air inlet of the gas outlet intercommunication low pressure jar of helium source, the gas outlet of the first air inlet intercommunication recovery pump of low pressure jar, the air inlet intercommunication of recovery pump the business turn over gas port of work piece, the first gas outlet intercommunication main press's of low pressure jar air inlet, the gas outlet intercommunication of main press the second air inlet of overhead tank, main press is oil-free main press, the recovery pump is the oilless recovery pump. The root is except producing the factor of oil gas in the helium of retrieving, proves through experimental repeatedly, uses the utility model discloses do not have oil gas in the helium of retrieving, the gas quality safe and reliable of retrieving avoids polluting the examined product, has improved leak hunting system sensitivity and leak hunting precision.
Description
Technical Field
The utility model relates to a vacuum chamber leak hunting system of recoverable helium especially relates to a vacuum chamber leak hunting system that can not have oily recovery helium.
Background
Many workpieces need to be detected in the sealing performance in the production process, and the most common detection method is a gas detection method, wherein trace gas is used for pressurizing the workpiece to be detected, the workpiece to be detected is placed in a closed cavity, and the sealing performance of the workpiece is judged by detecting the trace gas accumulated in the closed cavity. The most common gas detection device in practice is a vacuum helium leak detection device. However, the accuracy of the detection result of the common vacuum helium leak detection device has a certain problem. A large number of detection experiments show that all helium recovery parts applied to the vacuum box type helium leak detection recovery system on the market are accompanied by oil gas recovery. When the helium in the detected workpiece is recycled and reused, the helium carries oil gas to fill and can cause direct pollution to the detected product, so that the detection quality of the detected product is not guaranteed, and the problem of low accuracy is caused. The applicant has found out the cause of the entrainment of the oil and gas in the recovered helium gas after long-term practice and repeated research.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a can not have vacuum chamber leak hunting system of oil recovery helium, eradicated the factor that produces oil gas in the helium of retrieving, through experimental verification repeatedly, use the utility model discloses do not have oil gas in the helium of retrieving, the gas quality safe and reliable of retrieving avoids polluting and is examined the product, has improved leak hunting system sensitivity and leak hunting precision.
In order to solve the technical problem, the utility model provides a can do not have vacuum chamber leak hunting system of oil recovery helium, including vacuum chamber and work piece, the work piece is located in the vacuum chamber, the business turn over gas port of work piece communicates the gas outlet of hyperbaric tank, the gas outlet of first air inlet intercommunication helium source of hyperbaric tank, the second air inlet of the gas outlet intercommunication low pressure jar of helium source, the gas outlet of the first air inlet intercommunication recovery pump of low pressure jar, the air inlet intercommunication of recovery pump the business turn over gas port of work piece, the air inlet of the first gas outlet intercommunication main press of low pressure jar, the gas outlet intercommunication of main press the second air inlet of hyperbaric tank, main press is the oil-free main press, the recovery pump is the oil-free recovery pump.
And the gas inlet and the gas outlet of the workpiece are communicated with a gas outlet of a sulfur hexafluoride source.
And a first air outlet of the vacuum box is communicated with an air inlet of the main pump.
And the air outlet of the main pump is communicated with the air inlet of the pre-pump.
And a second air outlet of the vacuum box is communicated with an air inlet of a backing pump of the leak detector.
And a second air outlet of the vacuum box is communicated with an air inlet of the leak detector.
And a helium supplementing valve is connected in series with an air outlet of the helium source.
And a sulfur hexafluoride charging valve is connected in series with the gas outlet of the sulfur hexafluoride source.
And a first air inlet of the high-pressure tank is connected with a high-compensation valve in series.
And a helium filling valve is connected in series with the gas outlet of the high-pressure tank.
And a second air inlet of the low-pressure tank is connected with a low compensation valve in series.
And a first air inlet of the low-pressure tank is connected with a recovery exhaust valve in series.
And a second air outlet of the low-pressure tank is connected with an air release valve in series.
And the air inlet of the recovery pump is connected with a recovery valve in series.
And a main pumping valve is connected in series with a first air outlet of the vacuum box.
And a second air outlet of the vacuum box is connected with a leak detection valve in series.
And a third air outlet of the vacuum box is connected with a box body air release valve in series.
And the gas outlet of the helium supplementing valve, the gas inlet of the high supplementing valve and the gas inlet of the low supplementing valve are communicated through a first three-way connecting piece.
And the air outlet of the emptying valve and the air inlet of the recovery valve are communicated through a third three-way connecting piece.
And the gas inlet and outlet of the workpiece are communicated with the gas outlet of the helium filling valve through a first four-way connecting piece.
The first four-way connecting piece is communicated with the third three-way connecting piece.
The first four-way connecting piece is communicated with the third four-way connecting piece.
And the third four-way connecting piece is communicated with the gas outlet of the sulfur hexafluoride charging valve.
And the third four-way connecting piece is communicated with an air inlet of the workpiece air release valve.
And the third four-way connecting piece is communicated with an air inlet of the evacuation valve.
And the air outlet of the evacuation valve, the air outlet of the main pumping valve and the air inlet of the main pumping pump are communicated through a second three-way connecting piece.
The gas outlet of leak detection valve, the air inlet of leak detector backing pump passes through the intercommunication of second four-way connection spare.
And the second four-way connecting piece is communicated with an air inlet of the suction gun valve.
The oil-free main press is an oil-free compressor with the model of 2-22 WW-2.0/30; or the oil-free main press is an oil-free compressor, and the model is ISP-500B.
The oil-free recovery pump is an oil-free vortex vacuum pump with the model of GVD 8.
The utility model discloses a can not have vacuum chamber leak hunting system of oil recovery helium compares with prior art and has following beneficial effect.
1. The technical scheme is that the vacuum box leakage detection system capable of recovering helium without oil comprises a vacuum box and a workpiece, wherein the workpiece is positioned in the vacuum box, the inlet and outlet of the workpiece are communicated with the gas outlet of a high-pressure tank, the first gas inlet of the high-pressure tank is communicated with the gas outlet of a helium source, the gas outlet of the helium source is communicated with the second gas inlet of a low-pressure tank, the first gas inlet of the low-pressure tank is communicated with the gas outlet of a recovery pump, the gas inlet of the recovery pump is communicated with the inlet and outlet of the workpiece, the first gas outlet of the low-pressure tank is communicated with the gas inlet of a main press, the gas outlet of the main press is communicated with the second gas inlet of the high-pressure tank, the main press is an oil-free main press, the recovery pump is a technical means of an oil-free recovery pump, so that the factor of oil gas generated in the recovered helium is eliminated, the helium is, the quality of the recovered gas is safe and reliable, the pollution to the detected product is avoided, and the sensitivity and the leakage detection precision of the leakage detection system are improved.
2. In the technical scheme, the gas inlet and the gas outlet of the workpiece are communicated with the gas outlet of the sulfur hexafluoride source; a first air outlet of the vacuum box is communicated with an air inlet of the main pump; the air outlet of the main pump is communicated with the air inlet of the pre-pump; a second air outlet of the vacuum box is communicated with an air inlet of a backing pump of the leak detector; the second air outlet of the vacuum box is communicated with the air inlet of the leak detector, so that the detection of the vacuum degree is realized.
3. In the technical scheme, a helium supplementing valve is connected in series with an air outlet of the helium source; a sulfur hexafluoride charging valve is connected in series with an air outlet of the sulfur hexafluoride source; a first air inlet of the high-pressure tank is connected with a high compensation valve in series; a helium filling valve is connected in series with the gas outlet of the high-pressure tank; a second air inlet of the low-pressure tank is connected with a low compensation valve in series; a first air inlet of the low-pressure tank is connected with a recovery exhaust valve in series; a second air outlet of the low-pressure tank is connected with an air release valve in series; the air inlet of the recovery pump is connected with a recovery valve in series; a first air outlet of the vacuum box is connected with a main pumping valve in series; a second air outlet of the vacuum box is connected with a leak detection valve in series; the third air outlet of the vacuum box is connected with a box body air release valve in series, so that the helium in the detected workpiece is recycled.
4. In the technical scheme, the gas outlet of the helium supplementing valve, the gas inlet of the high supplementing valve and the gas inlet of the low supplementing valve are communicated through a first three-way connecting piece; the air outlet of the emptying valve and the air inlet of the recovery valve are communicated through a third three-way connecting piece; the gas inlet and outlet of the workpiece are communicated with the gas outlet of the helium filling valve through a first four-way connecting piece; the first four-way connecting piece is communicated with the third three-way connecting piece; the first four-way connecting piece is communicated with the third four-way connecting piece; the third four-way connecting piece is communicated with an air outlet of the sulfur hexafluoride charging valve; the third four-way connecting piece is communicated with an air inlet of the workpiece air release valve; the third four-way connecting piece is communicated with an air inlet of the evacuation valve; the air outlet of the evacuation valve, the air outlet of the main pumping valve and the air inlet of the main pumping pump are communicated through a second three-way connecting piece; an air outlet of the leak detection valve, an air inlet of the leak detector and an air inlet of a backing pump of the leak detector are communicated through a second four-way connecting piece; the second four-way connecting piece is communicated with the air inlet of the suction gun valve, so that the connection is tight and coordinated, the installation, debugging and maintenance are convenient, and the safe and reliable operation of the system is maintained.
5. The oil-free main press is an oil-free compressor, and the model is 2-22 WW-2.0/30; or the oil-free main press is an oil-free compressor, and the model is ISP-500B; the oil-free recovery pump is an oil-free scroll vacuum pump, and adopts the technical means of GVD8, so that the system can run in an oil-free condition.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the utility model discloses can not have the vacuum chamber leak hunting system connection structure sketch map of oil recovery helium. The reference numerals are explained below.
1-vacuum box;
2-workpiece;
3-helium source;
4-high pressure tank;
5-sulfur hexafluoride source;
6-low pressure tank;
7-main press;
8-a recovery pump;
9-pre-pump;
10-leak detector backing pump;
11-a leak detector;
12-a main pump;
13-workpiece air release valve;
14-filling a sulfur hexafluoride valve;
15-helium supplement valve;
16-helium filling valve;
17-high compensation valve;
18-a recovery valve;
19-recovering the exhaust valve;
20-an emptying valve;
21-low compensation valve;
22-an evacuation valve;
23-main pumping valve;
24-box air relief valve;
25-a leak detection valve;
26-a suction gun valve;
27-a first four-way connection;
28-a second four-way connection piece;
29-a third four-way connection;
30-a first three-way connecting piece;
31-a second three-way connecting piece;
32-third three-way connection piece.
Detailed Description
As shown in fig. 1, the utility model provides a can do not have vacuum chamber leak hunting system of oil recovery helium, including vacuum chamber 1 and work piece 2, work piece 2 is located in vacuum chamber 1, the business turn over gas port of work piece 2 communicates the gas outlet of high-pressure tank 4, the first air inlet intercommunication gas outlet of high-pressure tank 4 helium source 3, the second air inlet of gas outlet intercommunication low-pressure tank 6 of helium source 3, the first air inlet intercommunication recovery pump 8's of low-pressure tank 6 gas outlet, recovery pump 8's air inlet intercommunication the business turn over gas port of work piece 2, the first gas outlet intercommunication main press 7's of low-pressure tank 6 air inlet, the gas outlet intercommunication of main press 7 the second air inlet of high-pressure tank 4, main press 7 is the oil-free main press, recovery pump 8 is the oilless recovery pump.
The embodiment adopts the vacuum box leakage detection system capable of recovering helium without oil, which comprises a vacuum box and a workpiece, wherein the workpiece is positioned in the vacuum box, the inlet and outlet of the workpiece are communicated with the gas outlet of a high-pressure tank, the first gas inlet of the high-pressure tank is communicated with the gas outlet of a helium source, the gas outlet of the helium source is communicated with the second gas inlet of a low-pressure tank, the first gas inlet of the low-pressure tank is communicated with the gas outlet of a recovery pump, the gas inlet of the recovery pump is communicated with the inlet and outlet of the workpiece, the first gas outlet of the low-pressure tank is communicated with the gas inlet of a main press, the gas outlet of the main press is communicated with the second gas inlet of the high-pressure tank, the main press is an oil-free main press, the recovery pump is a technical means of an oil-free recovery pump, so that the factor of generating oil gas in the recovered helium is eliminated, the helium is, the quality of the recovered gas is safe and reliable, the pollution to the detected product is avoided, and the sensitivity and the leakage detection precision of the leakage detection system are improved.
As shown in fig. 1, the gas inlet and the gas outlet of the workpiece 2 according to this embodiment are communicated with the gas outlet of a sulfur hexafluoride source 5; a first air outlet of the vacuum box 1 is communicated with an air inlet of a main pump 12; the air outlet of the main pump 12 is communicated with the air inlet of the pre-pump 9; a second air outlet of the vacuum box 1 is communicated with an air inlet of a backing pump 10 of the leak detector; and a second air outlet of the vacuum box 1 is communicated with an air inlet of the leak detector 11.
In the embodiment, the gas inlet and the gas outlet of the workpiece are communicated with the gas outlet of the sulfur hexafluoride source; a first air outlet of the vacuum box is communicated with an air inlet of the main pump; the air outlet of the main pump is communicated with the air inlet of the pre-pump; a second air outlet of the vacuum box is communicated with an air inlet of a backing pump of the leak detector; the second air outlet of the vacuum box is communicated with the air inlet of the leak detector, so that the detection of the vacuum degree is realized.
As shown in fig. 1, a helium compensating valve 15 is connected in series with the gas outlet of the helium source 3 in the present embodiment; a sulfur hexafluoride charging valve 14 is connected in series with an air outlet of the sulfur hexafluoride source 5; a first air inlet of the high-pressure tank 4 is connected with a high compensation valve 17 in series; a helium charging valve 16 is connected in series with the gas outlet of the high-pressure tank 4; a second air inlet of the low-pressure tank 6 is connected with a low compensation valve 21 in series; a first air inlet of the low-pressure tank 6 is connected with a recovery exhaust valve 19 in series; a second air outlet of the low-pressure tank 6 is connected with an air release valve 20 in series; a gas inlet of the recovery pump 8 is connected with a recovery valve 18 in series; a main pumping valve 23 is connected in series with a first air outlet of the vacuum box 1; a second air outlet of the vacuum box 1 is connected with a leak detection valve 25 in series; and a tank body air release valve 24 is connected in series with a third air outlet of the vacuum tank 1.
In the embodiment, the helium supplementing valve is connected in series with the gas outlet of the helium source; a sulfur hexafluoride charging valve is connected in series with an air outlet of the sulfur hexafluoride source; a first air inlet of the high-pressure tank is connected with a high compensation valve in series; a helium filling valve is connected in series with the gas outlet of the high-pressure tank; a second air inlet of the low-pressure tank is connected with a low compensation valve in series; a first air inlet of the low-pressure tank is connected with a recovery exhaust valve in series; a second air outlet of the low-pressure tank is connected with an air release valve in series; the air inlet of the recovery pump is connected with a recovery valve in series; a first air outlet of the vacuum box is connected with a main pumping valve in series; a second air outlet of the vacuum box is connected with a leak detection valve in series; the third air outlet of the vacuum box is connected with a box body air release valve in series, so that the helium in the detected workpiece is recycled.
As shown in fig. 1, the gas outlet of the helium replenishment valve 15, the gas inlet of the high replenishment valve 17, and the gas inlet of the low replenishment valve 21 of the present embodiment are communicated with each other by a first three-way connection member 30; the air outlet of the emptying valve 20 and the air inlet of the recovery valve 18 are communicated through a third three-way connecting piece 32; the gas inlet and outlet of the workpiece 2 and the gas outlet of the helium charging valve 16 are communicated through a first four-way connecting piece 27; the first four-way connecting piece 27 is communicated with the third three-way connecting piece 32; the first four-way connecting piece 27 is communicated with the third four-way connecting piece 29; the third four-way connecting piece 29 is communicated with an air outlet of the sulfur hexafluoride charging valve 14; the third four-way connecting piece 29 is communicated with an air inlet of the workpiece deflation valve 13; the third four-way connection 29 is communicated with the air inlet of the evacuation valve 22; the air outlet of the evacuation valve 22, the air outlet of the main suction valve 23 and the air inlet of the main suction pump 12 are communicated through a second three-way connecting piece 31; an air outlet of the leak detection valve 25, an air inlet of the leak detector 11 and an air inlet of the backing pump 10 of the leak detector are communicated through a second four-way connecting piece 28; the second four-way connection 28 communicates with the air inlet of the pipette valve 26.
In the embodiment, the gas outlet of the helium supplementing valve, the gas inlet of the high supplementing valve and the gas inlet of the low supplementing valve are communicated through a first three-way connecting piece; the air outlet of the emptying valve and the air inlet of the recovery valve are communicated through a third three-way connecting piece; the gas inlet and outlet of the workpiece are communicated with the gas outlet of the helium filling valve through a first four-way connecting piece; the first four-way connecting piece is communicated with the third three-way connecting piece; the first four-way connecting piece is communicated with the third four-way connecting piece; the third four-way connecting piece is communicated with an air outlet of the sulfur hexafluoride charging valve; the third four-way connecting piece is communicated with an air inlet of the workpiece air release valve; the third four-way connecting piece is communicated with an air inlet of the evacuation valve; the air outlet of the evacuation valve, the air outlet of the main pumping valve and the air inlet of the main pumping pump are communicated through a second three-way connecting piece; an air outlet of the leak detection valve, an air inlet of the leak detector and an air inlet of a backing pump of the leak detector are communicated through a second four-way connecting piece; the second four-way connecting piece is communicated with the air inlet of the suction gun valve, so that the connection is tight and coordinated, the installation, debugging and maintenance are convenient, and the safe and reliable operation of the system is maintained.
As shown in fig. 1, the oil-free main press of the present embodiment is an oil-free compressor, and the model is 2-22WW-2.0/30 (manufactured by nanjing Hendard compressor, Ltd.); alternatively, the oil-free main press is an oil-free compressor, and is of the type ISP-500B (manufactured by Nippon Seiko Co., Ltd.); the oil-free recovery pump is an oil-free scroll vacuum pump, and the model is GVD8 (Ningbo Bass energy Co., Ltd.).
In the embodiment, the oil-free main compressor is an oil-free compressor, and the model is 2-22WW-2.0/30 (produced by Nanjing Hengda compressor Co., Ltd.); alternatively, the oil-free main press is an oil-free compressor, and is of the type ISP-500B (manufactured by Nippon Seiko Co., Ltd.); the oil-free recovery pump is an oil-free vortex vacuum pump, and adopts the technical means of GVD8 (Ningbo Bass energy Co., Ltd.), so that the system can operate in an oil-free condition.
Claims (5)
1. The utility model provides a can there be oil-free vacuum box leak hunting system who retrieves helium, includes vacuum box (1) and work piece (2), work piece (2) are located in vacuum box (1), the business turn over gas port of work piece (2) communicates the gas outlet of high-pressure tank (4), the gas outlet of first air inlet intercommunication helium source (3) of high-pressure tank (4), the second air inlet of gas outlet intercommunication low-pressure tank (6) of helium source (3), the gas outlet of first air inlet intercommunication recovery pump (8) of low-pressure tank (6), the air inlet intercommunication of recovery pump (8) the business turn over gas port of work piece (2), the air inlet of first gas outlet intercommunication main press (7) of low-pressure tank (6), the gas outlet intercommunication of main press (7) the second air inlet of high-pressure tank (4), its characterized in that: the main press (7) is an oil-free main press, and the recovery pump (8) is an oil-free recovery pump.
2. An oil-free helium recovery vacuum box leak detection system as claimed in claim 1, wherein:
the gas inlet and outlet of the workpiece (2) are communicated with the gas outlet of the sulfur hexafluoride source (5);
a first air outlet of the vacuum box (1) is communicated with an air inlet of the main pump (12);
the air outlet of the main pump (12) is communicated with the air inlet of the pre-pump (9);
a second air outlet of the vacuum box (1) is communicated with an air inlet of a backing pump (10) of the leak detector;
and a second air outlet of the vacuum box (1) is communicated with an air inlet of the leak detector (11).
3. An oil-free helium recovery vacuum box leak detection system as claimed in claim 2, wherein:
a helium supplementing valve (15) is connected in series with an air outlet of the helium source (3);
a sulfur hexafluoride charging valve (14) is connected in series with an air outlet of the sulfur hexafluoride source (5);
a first air inlet of the high-pressure tank (4) is connected with a high compensation valve (17) in series;
a helium filling valve (16) is connected in series with the gas outlet of the high-pressure tank (4);
a second air inlet of the low-pressure tank (6) is connected with a low compensation valve (21) in series;
a first air inlet of the low-pressure tank (6) is connected with a recovery exhaust valve (19) in series;
a second air outlet of the low-pressure tank (6) is connected with an air release valve (20) in series;
a gas inlet of the recovery pump (8) is connected with a recovery valve (18) in series;
a first air outlet of the vacuum box (1) is connected with a main pumping valve (23) in series;
a second air outlet of the vacuum box (1) is connected with a leak detection valve (25) in series;
and a third air outlet of the vacuum box (1) is connected with a box body air release valve (24) in series.
4. An oil-free helium recovery vacuum box leak detection system as claimed in claim 3, wherein:
the gas outlet of the helium supplementing valve (15), the gas inlet of the high supplementing valve (17) and the gas inlet of the low supplementing valve (21) are communicated through a first three-way connecting piece (30);
the air outlet of the emptying valve (20) and the air inlet of the recovery valve (18) are communicated through a third three-way connecting piece (32);
the gas inlet and outlet of the workpiece (2) and the gas outlet of the helium filling valve (16) are communicated through a first four-way connecting piece (27);
the first four-way connecting piece (27) is communicated with the third three-way connecting piece (32);
the first four-way connecting piece (27) is communicated with the third four-way connecting piece (29);
the third four-way connecting piece (29) is communicated with an air outlet of the sulfur hexafluoride charging valve (14);
the third four-way connecting piece (29) is communicated with an air inlet of the workpiece air release valve (13);
the third four-way connecting piece (29) is communicated with an air inlet of the evacuation valve (22);
the air outlet of the evacuation valve (22), the air outlet of the main suction valve (23) and the air inlet of the main suction pump (12) are communicated through a second three-way connecting piece (31);
an air outlet of the leak detection valve (25), an air inlet of the leak detector (11) and an air inlet of the pre-pump (10) of the leak detector are communicated through a second four-way connecting piece (28);
and the second four-way connecting piece (28) is communicated with an air inlet of the suction gun valve (26).
5. An oil-free helium recovery vacuum box leak detection system as claimed in claim 1, wherein:
the oil-free main press is an oil-free compressor with the model of 2-22 WW-2.0/30; or the oil-free main press is an oil-free compressor, and the model is ISP-500B;
the oil-free recovery pump is an oil-free vortex vacuum pump with the model of GVD 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921160955.8U CN209992127U (en) | 2019-07-23 | 2019-07-23 | Vacuum box leak detection system capable of recovering helium without oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921160955.8U CN209992127U (en) | 2019-07-23 | 2019-07-23 | Vacuum box leak detection system capable of recovering helium without oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209992127U true CN209992127U (en) | 2020-01-24 |
Family
ID=69297651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921160955.8U Active CN209992127U (en) | 2019-07-23 | 2019-07-23 | Vacuum box leak detection system capable of recovering helium without oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209992127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115655587A (en) * | 2022-12-28 | 2023-01-31 | 夏菱空调邯郸有限责任公司 | Refrigerant leak detection device for air conditioner production |
-
2019
- 2019-07-23 CN CN201921160955.8U patent/CN209992127U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115655587A (en) * | 2022-12-28 | 2023-01-31 | 夏菱空调邯郸有限责任公司 | Refrigerant leak detection device for air conditioner production |
| CN115655587B (en) * | 2022-12-28 | 2023-03-21 | 夏菱空调邯郸有限责任公司 | Refrigerant leak detection device for air conditioner production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209992127U (en) | Vacuum box leak detection system capable of recovering helium without oil | |
| CN104697861A (en) | Low-energy-consumption multi-stage self-pressurization high-pressure container gas circulating test system | |
| CN205137057U (en) | Turbocharging system | |
| CN203273292U (en) | Engine pressure-storage type helium pressurizing system | |
| CN106080619A (en) | Application vacuum pump and vehicle run aerofluxus stage by stage is conduit traffic vacuum pumping method | |
| CN210601020U (en) | Gas storage tank with gas recovery device | |
| CN218546059U (en) | Helium recovery equipment | |
| CN217761523U (en) | Two-stage full-hydraulic pressure cylinder with stroke detection function | |
| CN108678729B (en) | Automatic monitoring device and method for accumulated liquid level of high-pressure gas well shaft | |
| CN207259377U (en) | A kind of optical fiber carries hydrogen production device | |
| CN105756905A (en) | Multi-stage pressurization system | |
| CN202017880U (en) | Low-pressure scattered gas recycling device | |
| CN213022137U (en) | A airtight detecting system for hydrogen energy automobile | |
| CN209559438U (en) | The air-tightness detection tool of PUN type water pump | |
| CN213285982U (en) | Nitrogen recovery system | |
| CN210664951U (en) | Sealing test equipment for locomotive cylinder body | |
| CN205064311U (en) | Electronic pump equipment | |
| CN108343748B (en) | LNG (liquefied Natural gas) cylinder switching valve body for vehicle and working method thereof | |
| CN203239534U (en) | Integrated cylinder body component of diaphragm compressor with single cylinder head | |
| CN218971476U (en) | Leakage gas recovery device of nitrogen centrifugal compressor for hydrogen liquefaction | |
| CN202955472U (en) | High pressure gasholder of pneumatic dredge pump | |
| CN209024191U (en) | A kind of valve block of carrying liqs safe retrieving function | |
| CN212776802U (en) | Vacuumizing protection device | |
| CN204534106U (en) | Application gas boosting technology recycles the device of valuable helium 3 gas | |
| CN215569735U (en) | Steel cylinder frame for gas delivery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |