CN218914564U - Low-temperature safety valve pipeline - Google Patents
Low-temperature safety valve pipeline Download PDFInfo
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- CN218914564U CN218914564U CN202320182934.6U CN202320182934U CN218914564U CN 218914564 U CN218914564 U CN 218914564U CN 202320182934 U CN202320182934 U CN 202320182934U CN 218914564 U CN218914564 U CN 218914564U
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Abstract
The utility model relates to the technical field of low-temperature pipelines, in particular to a low-temperature safety valve pipeline. The embodiment of the utility model provides a low-temperature safety valve pipeline, which comprises a safety valve, a metal corrugated hose and an internal pipeline; the safety valve is provided with preset pressure, and is opened to release pressure when the pressure in the internal pipeline exceeds the preset pressure; the internal pipeline is connected with the safety valve; the internal pipeline comprises a first pipeline connected with the safety valve and a second pipeline connected with low-temperature fluid, and two ends of the metal corrugated hose are welded on the first pipeline and the second pipeline respectively, so that the first pipeline and the second pipeline are communicated through the metal corrugated hose. The embodiment of the utility model provides a low-temperature safety valve pipeline which can have obvious heat leakage prevention effect under the condition of proper pipeline length.
Description
Technical Field
The utility model relates to the technical field of low-temperature pipelines, in particular to a low-temperature safety valve pipeline.
Background
The cryogenic line is typically provided with a safety valve which can act as a protective device and which opens to vent part of the gas in the system to atmosphere if the system pressure exceeds a set point. The low-temperature pipeline safety valve pipeline needs to consider heat leakage and installation space.
The safety valve pipeline leaks heat greatly, can lead to the pipeline frosting, the safety valve frosting, fluid loss scheduling problem, in the prior art, through lengthening the safety valve pipeline, can reduce the heat leak, however, if the length of safety valve pipeline is too big, can increase the whole height of device too high, installation space is too big.
Therefore, in view of the above drawbacks, a low-temperature relief valve line is urgently needed.
Disclosure of Invention
The embodiment of the utility model provides a low-temperature safety valve pipeline which can have obvious heat leakage prevention effect under the condition of proper pipeline length.
The embodiment of the utility model provides a low-temperature safety valve pipeline, which comprises a safety valve, a metal corrugated hose and an internal pipeline;
the safety valve is provided with preset pressure, and is opened to release pressure when the pressure in the internal pipeline exceeds the preset pressure;
the internal pipeline is connected with the safety valve;
the internal pipeline comprises a first pipeline connected with the safety valve and a second pipeline connected with low-temperature fluid, and two ends of the metal corrugated hose are welded on the first pipeline and the second pipeline respectively, so that the first pipeline and the second pipeline are communicated through the metal corrugated hose.
In one possible design, the vacuum pump further comprises a vacuum outer tube sleeved outside the inner pipeline, and vacuum leakage is reduced by vacuumizing between the inner pipeline and the vacuum outer tube.
In one possible design, the vacuum outer tube is provided with an extraction valve, through which the vacuum is drawn between the inner line and the vacuum outer tube.
In one possible design, the vacuum outer tube is provided with a sealing ring plate in the shape of a ring, the inner line passes through the inner edge of the sealing ring plate, and the inner line is welded with the inner edge of the sealing ring plate, the outer edge of the sealing ring plate is welded with the port of the vacuum outer tube, and the vacuum outer tube and the sealing ring plate cooperate to form a closed space outside the inner line.
In one possible design, the internal line is connected to the safety valve by a screw fit.
In one possible design, the metal bellows is made of stainless steel SS 30508 or SS31603.
In one possible design, the internal piping is made of stainless steel SS 30508 or SS31603.
In one possible design, the vacuum degree of the space between the inner pipe and the vacuum outer pipe is less than 5×10 at normal temperature -2 Pa, leak rate of helium mass spectrum leak detection is less than 5 multiplied by 10 -9 Pa·m 3 /s。
In one possible design, the metal bellows tube is stretched to a length of 2 to 3 times the original length of the straight tube.
Compared with the prior art, the utility model has at least the following beneficial effects:
in this embodiment, the internal pipeline includes a first pipeline connected to the safety valve and a second pipeline connected to the cryogenic fluid, and both ends of the metal bellows are welded to the first pipeline and the second pipeline, respectively, so that the first pipeline and the second pipeline are communicated through the metal bellows. The part of the inner pipeline, which is close to the safety valve, is provided with the metal corrugated hose, the metal corrugated hose is provided with a corrugated structure, and compared with a straight pipe, the metal corrugated hose is larger in heat conduction distance under the same length, and heat leakage can be reduced due to the increase of the heat conduction distance. Therefore, the low-temperature safety valve pipeline has excellent leakage-proof performance under the condition of smaller length by arranging the metal corrugated hose, so that the safe operation of an equipment system is ensured, the harm is reduced, the fluid loss is reduced, the low-temperature pipeline has small leakage heat, the pipeline cannot be frosted, the safety valve pipeline is shortened, the on-site height is limited, the influence is avoided, and the occupied space is small.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a low-temperature safety valve pipeline according to an embodiment of the present utility model.
In the figure:
1-a safety valve;
2-metal corrugated hose;
3-an internal line;
4-vacuum outer tube;
5-an extraction valve;
6-ring sealing plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.
In the description of embodiments of the present utility model, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance unless explicitly specified or limited otherwise; the term "plurality" means two or more, unless specified or indicated otherwise; the terms "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, it should be understood that the terms "upper", "lower", and the like used in the embodiments of the present utility model are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present utility model. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
As shown in fig. 1, the embodiment of the utility model provides a low-temperature safety valve pipeline, which comprises a safety valve 1, a metal corrugated hose 2 and an internal pipeline 3;
the safety valve 1 is provided with preset pressure, and when the pressure in the internal pipeline 3 exceeds the preset pressure, the safety valve 1 is opened to release pressure;
the internal pipeline 3 is connected with the safety valve 1;
the internal pipe 3 includes a first pipe line connected to the safety valve 1 and a second pipe line connected to the cryogenic fluid, and both ends of the metal bellows 2 are welded to the first pipe line and the second pipe line, respectively, so that the first pipe line and the second pipe line are communicated through the metal bellows 2.
In the present embodiment, the internal pipe 3 includes a first pipe line connected to the safety valve 1 and a second pipe line connected to the cryogenic fluid, and both ends of the metal bellows hose 2 are welded to the first pipe line and the second pipe line, respectively, so that the first pipe line and the second pipe line communicate through the metal bellows hose 2. The part of the inner pipeline 3, which is close to the safety valve 1, is provided with the metal corrugated hose 2, the metal corrugated hose 2 is provided with a corrugated structure, and compared with a straight pipe, the metal corrugated hose 2 has larger heat conduction distance, and the heat leakage can be reduced due to the increase of the heat conduction distance under the same length. Therefore, the metal corrugated hose 2 is arranged to ensure that the pipeline of the low-temperature safety valve 1 has excellent leakage-proof performance under the condition of smaller length, so that the safe operation of an equipment system is ensured, the harm is reduced, the leakage heat of a low-temperature pipeline is small, the pipeline cannot be frosted, the safety valve 1 cannot be frosted, the pipeline of the safety valve 1 is shortened, the on-site height is limited, the influence is avoided, and the occupied space is small.
In some embodiments of the present utility model, a vacuum outer tube 4 is further included, the vacuum outer tube 4 being sleeved outside the inner tube 3, and the leakage heat is reduced by evacuating between the inner tube 3 and the vacuum outer tube 4.
In the present embodiment, a vacuum space is formed outside the inner pipe 3 by the vacuum outer pipe 4, and the loss of cold is largely prevented.
In some embodiments of the utility model, the vacuum outer tube 4 is provided with an extraction valve 5, through which extraction valve 5 the vacuum is drawn between the inner line 3 and the vacuum outer tube 4.
In the present embodiment, the space between the inner pipe 3 and the vacuum outer pipe 4 is evacuated by the extraction valve 5.
In some embodiments of the present utility model, the vacuum outer tube 4 is provided with a ring-shaped sealing plate 6, the inner pipe 3 passes through an inner edge of the sealing plate 6, and the inner pipe 3 is welded with the inner edge of the sealing plate 6, an outer edge of the sealing plate 6 is welded with a port of the vacuum outer tube 4, and the vacuum outer tube 4 and the sealing plate 6 cooperate to form an enclosed space outside the inner pipe 3.
In the present embodiment, the vacuum outer tube 4 is sleeved outside the inner pipe 3, the vacuum outer tube 4 and the inner pipe 3 are connected by the collar plate 6, and a closed space is formed outside the inner pipe 3 by fitting the vacuum outer tube 4 and the collar plate 6.
In some embodiments of the utility model, the internal line 3 is connected to the safety valve 1 by a screw-fit.
In this embodiment, the threaded connection allows the internal line 3 to be removable from the safety valve 1, and provides high tightness and stability after installation.
In some embodiments of the present utility model, the metal bellows 2 is made of stainless steel SS 30508 or SS31603.
In this embodiment, SS 30508 or SS31603 can accommodate low temperature environments. Thus, either SS 30508 or SS31603 was selected to make metal bellows hose 2.
In some embodiments of the present utility model, the material of preparation of the inner line 3 is stainless steel SS 30508 or SS31603.
In this embodiment, SS 30508 or SS31603 can accommodate low temperature environments. Thus, either SS 30508 or SS31603 was chosen to make internal line 3.
In some embodiments of the present utility model, the space between the inner pipe 3 and the vacuum outer pipe 4 has a vacuum degree of less than 5×10 at normal temperature -2 Pa, leak rate of helium mass spectrum leak detection is less than 5 multiplied by 10 -9 Pa·m 3 /s。
In some embodiments of the present utility model, the metal bellows 2 is stretched to a length of a straight tube 2 to 3 times the original length.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. The low-temperature safety valve pipeline is characterized by comprising a safety valve (1), a metal corrugated hose (2) and an internal pipeline (3);
the safety valve (1) is provided with a preset pressure, and when the pressure in the internal pipeline (3) exceeds the preset pressure, the safety valve (1) is opened to release pressure;
the internal line (3) is connected to the safety valve (1);
the internal pipeline (3) comprises a first pipeline connected with the safety valve (1) and a second pipeline connected with low-temperature fluid, and two ends of the metal corrugated hose (2) are welded on the first pipeline and the second pipeline respectively, so that the first pipeline and the second pipeline are communicated through the metal corrugated hose (2).
2. The cryoprotectant valve line according to claim 1, further comprising a vacuum outer tube (4), said vacuum outer tube (4) being sleeved outside said inner line (3), the leakage heat being reduced by drawing a vacuum between said inner line (3) and said vacuum outer tube (4).
3. The cryoprotectant line according to claim 2, characterized in that the vacuum outer tube (4) is provided with an extraction valve (5), through which extraction valve (5) the vacuum is drawn between the inner line (3) and the vacuum outer tube (4).
4. A cryoprotectant valve line according to claim 3, characterized in that the vacuum outer tube (4) is provided with a ring-shaped sealing plate (6), the inner line (3) passes through the inner edge of the sealing plate (6), and the inner line (3) is welded with the inner edge of the sealing plate (6), the outer edge of the sealing plate (6) is welded with the port of the vacuum outer tube (4), the cooperation of the vacuum outer tube (4) and the sealing plate (6) forming a closed space outside the inner line (3).
5. The cryoprotectant line according to claim 4, characterized in that the internal line (3) is connected to the safety valve (1) by a screw-fit.
6. The low-temperature safety valve line according to claim 1, characterized in that the material of which the metal bellows hose (2) is made is stainless steel SS 30508 or SS31603.
7. The low-temperature safety valve line according to claim 1, characterized in that the material of preparation of the inner line (3) is stainless steel SS 30508 or SS31603.
8. According to claimThe cryoprotectant valve line according to claim 4, wherein the space between the inner line (3) and the vacuum outer tube (4) has a vacuum degree of less than 5X 10 at normal temperature -2 Pa, leak rate of helium mass spectrum leak detection is less than 5 multiplied by 10 -9 Pa·m 3 /s。
9. The low-temperature safety valve line according to claim 1, characterized in that the length of the metal bellows hose (2) stretched into a straight tube is 2-3 times the original length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320182934.6U CN218914564U (en) | 2023-01-30 | 2023-01-30 | Low-temperature safety valve pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320182934.6U CN218914564U (en) | 2023-01-30 | 2023-01-30 | Low-temperature safety valve pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218914564U true CN218914564U (en) | 2023-04-25 |
Family
ID=86012178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320182934.6U Active CN218914564U (en) | 2023-01-30 | 2023-01-30 | Low-temperature safety valve pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218914564U (en) |
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2023
- 2023-01-30 CN CN202320182934.6U patent/CN218914564U/en active Active
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