CN214624030U - Helium leak detection teaching device - Google Patents
Helium leak detection teaching device Download PDFInfo
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- CN214624030U CN214624030U CN202120600481.5U CN202120600481U CN214624030U CN 214624030 U CN214624030 U CN 214624030U CN 202120600481 U CN202120600481 U CN 202120600481U CN 214624030 U CN214624030 U CN 214624030U
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Abstract
The utility model discloses a helium leak detection teaching device, which comprises a vacuum pump, a vacuum container, a vacuum pipeline connected between the vacuum pump and the vacuum container, an instrument interface arranged on the vacuum pipeline and used for connecting a helium mass spectrometer, a first interface arranged on the vacuum container and used for connecting a standard leak piece, and a second interface arranged on the vacuum container and used for connecting a heat exchanger and/or a leak container; the side wall of the vacuum container is provided with a plurality of vacuum leakage holes which are respectively communicated with the inner space of the vacuum container and can be closed. The helium leakage detection teaching device of the utility model improves the skill level of helium leakage detection operators; the passing rate of LT in the nondestructive leakage detection of personnel is improved; can be used for researching the relation between the gas leakage rate and the molecular weight, the pressure and the like.
Description
Technical Field
The utility model relates to a gaseous device of checking leakage especially relates to a helium teaching device of checking leakage.
Background
At present, helium leakage detection work related to a power plant is more, operation is complex, however, helium leakage detection operators lack daily practice skill drilling opportunities, and work is easy to be dredged.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a helium leak hunting teaching device.
The utility model provides a technical scheme that its technical problem adopted is: the helium leak detection teaching device comprises a vacuum pump, a vacuum container, a vacuum pipeline connected between the vacuum pump and the vacuum container, an instrument interface arranged on the vacuum pipeline and used for connecting a helium mass spectrometer, a first interface arranged on the vacuum container and used for connecting a standard leak hole piece, and a second interface arranged on the vacuum container and used for connecting a heat exchanger and/or a leak hole container;
the side wall of the vacuum container is provided with a plurality of vacuum leakage holes which are respectively communicated with the inner space of the vacuum container and can be closed.
Preferably, the vacuum leakage hole is provided with internal threads, and the vacuum leakage hole is sealed or the leakage amount of the vacuum leakage hole is adjusted through the threaded matching of the first cock and the vacuum leakage hole.
Preferably, the helium leak hunting teaching device further comprises a closed leak container;
the leak hole container is provided with an air inlet for accessing helium, a first pressure interface for connecting a pressure transmitter and a container interface connected with the second interface; the container interface is provided with a second cock for adjusting the leakage of the container interface.
Preferably, the helium leak hunting teaching device further comprises a pressure transmitter connected to the first pressure interface.
Preferably, the helium leak hunting teaching device further comprises a first pipeline connected between the second interface and the container interface, and a first control valve arranged on the first pipeline.
Preferably, the helium leak hunting teaching device further comprises a heat exchanger connected with the second interface.
Preferably, the helium leak hunting teaching device further comprises a second pipeline connected between the second interface and the heat exchanger, and a second control valve arranged on the second pipeline.
Preferably, the heat exchanger comprises a hollow shell and a plurality of heat exchange tubes arranged in the shell at intervals;
the opening end of the heat exchange tube is positioned on the side plate of the shell, at least one heat exchange tube is provided with a heat exchange leak hole, and the heat exchange leak hole is communicated with the inner space of the heat exchange tube and the inner space of the shell;
the shell is provided with a heat exchange interface which is connected with the second interface and communicated with the inner space of the shell, and a second pressure interface which is connected with the pressure transmitter and communicated with the inner space of the shell.
Preferably, the helium leak hunting teaching device further comprises a pressure transmitter connected to the second pressure interface.
Preferably, the helium leak hunting teaching device further comprises a helium mass spectrometer and a pressure monitoring device, wherein the helium mass spectrometer is connected with the first interface in a matched mode, and the pressure monitoring device is arranged on the vacuum pipeline and located between the first interface and the vacuum container.
The utility model has the advantages that: the skill level of helium leakage detection operators is improved; the passing rate of LT in the nondestructive leakage detection of personnel is improved; can be used for researching the relation between the gas leakage rate and the molecular weight, the pressure and the like.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a connection block diagram of an embodiment of the helium leak detection teaching device of the present invention;
FIG. 2 is a schematic structural view of a vacuum container in the helium leak detection teaching apparatus of the present invention;
FIG. 3 is a schematic structural view of a leak hole container in the helium leak detection teaching device of the present invention;
fig. 4 is the utility model discloses a structural schematic of heat exchanger among helium leak hunting teaching device.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the helium leak-checking teaching device of the present invention comprises a vacuum pump 10, a vacuum container 20, a vacuum pipeline 30 connected between the vacuum pump 10 and the vacuum container 20, an instrument interface (not shown) arranged on the vacuum pipeline 30 and used for connecting a helium mass spectrometer, and a first interface 21 and a second interface 22 arranged on the vacuum container 20.
Wherein the first interface 21 is used for connecting a standard leak member, which is commercially available. The second interface 22 is used to connect a heat exchanger and/or a leak container to perform helium leak testing exercises with different requirements.
The sidewall of the vacuum container 20 is provided with a plurality of vacuum leakage holes 201 which are respectively communicated with the inner space of the vacuum container 20 and can be closed. The vacuum leakage hole 201 is provided with internal threads, and the vacuum leakage hole 201 is closed or the leakage amount of the vacuum leakage hole 201 is adjusted through the threaded matching of a first cock (not shown) and the vacuum leakage hole 201.
Alternatively, the vacuum container 20 is provided with eight vacuum leakage holes 201 on two opposite side walls, and the vacuum container 20 is provided with sixteen vacuum leakage holes 201 in total.
The vacuum container 20 is also provided with an interface 202 for connection with the vacuum line 30. The interface 202 on the vacuum vessel 20 is further quick-disconnect from the vacuum line 30 via a quick-connect. In the embodiment shown in fig. 2, the interface 202, the first interface 21 and the second interface 22 are located on different sides of the vacuum vessel 20, respectively.
Referring to fig. 1 and 3, the helium leak testing teaching device of the present invention further includes a sealed leak container 40, a pressure transmitter (not shown), a first pipeline (not shown), and a first control valve (not shown) as required.
The orifice container 40 is provided with an air inlet 41, a first pressure port 42 and a container port 43. The inlet 41 is adapted to be connected to a source of helium gas (e.g., a helium tank, etc.) for introducing helium gas into the leak port container 40. The first pressure interface 42 is used to connect to a pressure transmitter by which the pressure in the leak container 40 is monitored. The container port 43 is used for connecting with the second port 22 of the vacuum container 20; the first line is connected between the container port 43 and the second port 22 to provide communication between the leak hole container 40 and the vacuum container 20. The first control valve is arranged on the first pipeline and controls the on-off of the first pipeline.
Quick assembly and disassembly can be realized between the container interface 43 and the first pipeline and between the second interface 22 and the first pipeline through quick connectors respectively.
A second cock (not shown) is provided in the container neck 43, and the second cock is threadedly engaged with the internal thread of the container neck 43, and the leakage amount of the container neck 43 is adjusted by the engagement of the second cock with the container neck 43.
With reference to fig. 1 and 4, the helium leak testing teaching device of the present invention further includes a heat exchanger 50, a second pipeline (not shown), and a second control valve (not shown) as required. The heat exchanger 50 is used to simulate an on-site condenser, and the second pipeline is connected between the heat exchanger 50 and the vacuum container 20 to communicate the two. And the second control valve is arranged on the second pipeline and used for controlling the on-off of the second pipeline.
Specifically, the heat exchanger 50 includes a hollow shell 51, and a plurality of heat exchange tubes 52 arranged at intervals in the shell 51. Opposite ends of the heat exchange pipe 52 are respectively supported and fixed on opposite sides of the shell 51; and the heat exchange tubes 52 are closed at one end and open at the opposite end to form an open end on the side plate of the housing 51. At least one heat exchange tube 52 is provided with a heat exchange leak hole which communicates the inner space of the heat exchange tube 52 with the inner space of the shell 51; the diameter and number of the heat exchange holes and the positions of the heat exchange tubes 52 are set according to the purposes of helium leakage detection exercise and the like.
The housing 51 is provided with a heat exchange port 53 communicating with the inner space of the housing 51, the heat exchange port 53 is used for connecting with the second port 22 of the vacuum container 20, that is: the second line is connected between the heat exchange port 53 and the second port 22.
The casing 51 is further provided with a second pressure port (not shown) for connecting a pressure transmitter and communicating with the internal space of the casing 51, and the pressure transmitter monitors the internal pressure of the heat exchanger 50.
Further, as shown in fig. 1, the helium leak-checking teaching device of the present invention further includes a helium mass spectrometer 60 cooperatively connected with the instrument interface, and a pressure monitoring device 70 (which may be a pirani vacuum gauge, etc.) disposed on the vacuum pipeline 30 and located between the first interface and the vacuum container 20.
It will be appreciated that at least one of the helium mass spectrometer 60 and the pressure monitoring device 70 may also be independent of the helium leak detection teaching device, and the connection may be reconfigured at the teaching site.
Referring to fig. 1 and 2, in a first application of the helium leak testing teaching apparatus of the present invention, a standard leak member is connected to a first interface 21 of a vacuum container 20, and a second interface 22 of the vacuum container 20 is sealed. The first cock of 1-3 vacuum leakage holes 201 of the vacuum container 20 is adjusted to make the vacuum leakage holes 201 in a micro-leakage state, and the first cocks of other vacuum leakage holes 201 are screwed to seal the vacuum leakage holes 201.
With reference to fig. 1-3, in a second application of the helium leak testing teaching apparatus of the present invention, a standard leak member is connected to the first port 21 of the vacuum container 20, the second port 22 of the vacuum container 20 is connected to the leak container 40 through a first pipeline, and a first control valve on the first pipeline is in an initial closed state; connecting the pressure transmitter to the first pressure interface 42 of the leak orifice container 40; the gas inlet 41 on the leak container 40 is connected with a helium source.
With reference to fig. 1, fig. 2 and fig. 4, in a third application of the helium leak testing teaching apparatus of the present invention, the standard leak member is connected to the first port 21 of the vacuum container 20, the second port 22 of the vacuum container 20 is connected to the heat exchanger 50 through a second pipeline, and the second control valve on the second pipeline is in an initial closed state; the pressure transmitter is connected to a second pressure interface of the heat exchanger 50.
The vacuum pump 10 is started to evacuate, and the second control valve is opened to control the pressure in the heat exchanger 50 to about 5 kPa. Arranging a vacuum cover outside the heat exchanger 50, and injecting helium gas into the vacuum cover; and determining the leakage condition of the heat exchange pipe 52 of the heat exchanger 50 according to the reading of the helium mass spectrometer 60, and finishing the purpose of quick leakage detection.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The helium leak detection teaching device is characterized by comprising a vacuum pump, a vacuum container, a vacuum pipeline connected between the vacuum pump and the vacuum container, an instrument interface arranged on the vacuum pipeline and used for connecting a helium mass spectrometer, a first interface arranged on the vacuum container and used for connecting a standard leak hole piece, and a second interface arranged on the vacuum container and used for connecting a heat exchanger and/or a leak hole container;
the side wall of the vacuum container is provided with a plurality of vacuum leakage holes which are respectively communicated with the inner space of the vacuum container and can be closed.
2. The helium leak testing teaching device as claimed in claim 1, wherein said vacuum hole is internally threaded, and a first cock is threadedly engaged with said vacuum hole to close said vacuum hole or to adjust the amount of leakage from said vacuum hole.
3. The helium leak hunting teaching device of claim 1 further comprising a sealed leak container;
the leak hole container is provided with an air inlet for accessing helium, a first pressure interface for connecting a pressure transmitter and a container interface connected with the second interface; the container interface is provided with a second cock for adjusting the leakage of the container interface.
4. The helium leak hunting teaching device of claim 3 further comprising a pressure transmitter connected to said first pressure interface.
5. The helium leak hunting teaching device of claim 3 further comprising a first line connected between said second interface and said container interface, a first control valve disposed on said first line.
6. The helium leak hunting teaching device of claim 1 further comprising a heat exchanger connected to said second interface.
7. The helium leak hunting teaching device of claim 6, further comprising a second line connected between said second interface and said heat exchanger, a second control valve disposed on said second line.
8. The helium leak testing teaching device as claimed in claim 6, wherein said heat exchanger comprises a hollow housing, a plurality of heat exchange tubes arranged at intervals in said housing;
the opening end of the heat exchange tube is positioned on the side plate of the shell, at least one heat exchange tube is provided with a heat exchange leak hole, and the heat exchange leak hole is communicated with the inner space of the heat exchange tube and the inner space of the shell;
the shell is provided with a heat exchange interface which is connected with the second interface and communicated with the inner space of the shell, and a second pressure interface which is connected with the pressure transmitter and communicated with the inner space of the shell.
9. The helium leak hunting teaching device of claim 8 further comprising a pressure transmitter connected to said second pressure interface.
10. The helium leak hunting teaching device of any one of claims 1-9 further comprising a helium mass spectrometer cooperatively connected to said first interface, a pressure monitoring device disposed on said vacuum line and between said first interface and the vacuum vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120600481.5U CN214624030U (en) | 2021-03-24 | 2021-03-24 | Helium leak detection teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120600481.5U CN214624030U (en) | 2021-03-24 | 2021-03-24 | Helium leak detection teaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214624030U true CN214624030U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120600481.5U Active CN214624030U (en) | 2021-03-24 | 2021-03-24 | Helium leak detection teaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214624030U (en) |
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2021
- 2021-03-24 CN CN202120600481.5U patent/CN214624030U/en active Active
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