CN215799352U - Pressure taking flange and natural gas filtering system with water separation device - Google Patents
Pressure taking flange and natural gas filtering system with water separation device Download PDFInfo
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- CN215799352U CN215799352U CN202122365395.3U CN202122365395U CN215799352U CN 215799352 U CN215799352 U CN 215799352U CN 202122365395 U CN202122365395 U CN 202122365395U CN 215799352 U CN215799352 U CN 215799352U
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Abstract
The utility model belongs to the technical field of natural gas exploitation equipment, and particularly relates to a pressure taking flange and a natural gas filtering system with a water separator. A pressure measuring flange comprises a flange body, wherein a flow channel is arranged in the flange body, one end of the flow channel is used for being communicated with the end part of a pressure measuring pipe, and the other end of the flow channel is used for mounting a flange liquid level transmitter; a first mounting channel is formed in the side face of the flange body and communicated with the flow channel, and two valve groups are mounted in the first mounting channel. Compared with the mode that the sampling flange is removed after the pressure of the whole water separation separator is relieved, the sampling flange provided by the utility model can effectively shorten the removal time of the sampling flange.
Description
Technical Field
The utility model belongs to the technical field of natural gas exploitation equipment, and particularly relates to a pressure taking flange and a natural gas filtering system with a water separator.
Background
In the process of exploiting natural gas, a water separator is generally needed to filter and separate the exploited natural gas. As shown in fig. 1, the casing of the existing water separator 2 is generally provided with an air inlet 21, an air outlet 22 and a pressure tapping pipe 23; the pressure sampling pipes 23 are usually two groups, the end part of each group of pressure sampling pipes 23 is provided with a pressure sampling flange, and each group of pressure sampling pipes 23 is also provided with a ball valve for opening or closing a pressure sampling pipe channel; and a flange liquid level transmitter 4 is arranged on each group of pressure taking flanges, the pressure value in each group of pressure taking flanges can be measured through the flange liquid level transmitter 4, and then the value of the liquid level parameter in the water separation separator 2 can be calculated.
However, in the existing water separator 2, a pressure monitoring instrument and a pressure relief device are not arranged between the ball valve on the pressure sampling pipe 23 and the pressure sampling flange, so that the sampling flange cannot be directly disassembled, assembled and cleaned after the liquid level transmitter 4 is blocked. Even after the entire water separator 2 is depressurized, it is not possible to accurately determine whether or not the pressure remains in the pressure sampling pipe 23. At this time, the pressure-tapping flange on the pressure-tapping pipe 23 needs to be detached after purging the interior of the water separator 2. And then make when carrying out the dismouting to the pressure flange not only need stop production line work, but also need to spend longer time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: to in current water separator, the ball valve rear end on the pressure pipe is got, also does not set up pressure monitoring appearance and pressure relief device between ball valve and the pressure flange promptly to after liquid level transmitter blocks up, unable direct carries out the dismouting washing with the sample flange, and leads to not only needing to stop producing line work when carrying out the dismouting to the pressure flange, but also need spending the problem of longer time, provides a pressure flange and takes water separator's natural gas filtration system.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a pressure measuring flange comprises a flange body, wherein a flow channel is arranged in the flange body, one end of the flow channel is used for being communicated with the end part of a pressure measuring pipe, and the other end of the flow channel is used for mounting a flange liquid level transmitter; a first mounting channel is formed in the side face of the flange body and communicated with the flow channel, and two valve groups are mounted in the first mounting channel.
The sampling flange provided by the utility model comprises a flange body, wherein a flow channel is arranged in the flange body. When the utility model is used, one end of the flow passage is communicated with the pressure sampling pipe, and the liquid level transmitter is arranged at the other end of the flow passage. Therefore, the pressure value in the flow channel can be measured by the flange liquid level transmitter, and the parameter value of the liquid level in the water separator can be calculated.
In addition, the sampling flange provided by the utility model is provided with two valve groups on the flange body, and the two valve groups are communicated with the flow channel in the flange body through the first mounting channel. Therefore, in the process of using the sampling flange provided by the utility model, when the sampling flange needs to be removed, the ball valve on the pressure sampling pipe can be closed firstly, then the switch valve on the two valve groups is opened, so that the pressure in the flow passage is relieved, and the sampling flange is removed after the pressure relief in the flow passage is finished.
Therefore, in the process of using the sampling flange provided by the utility model, when the sampling flange needs to be removed, the ball valve on the pressure sampling pipe can be closed firstly, and then the pressure inside the sampling flange is relieved through the two valve groups. In addition, in the dismounting process of the sampling flange, the pressure relief of the internal pressure of the sampling flange can be finished through the two valve groups on the flange body, and the ball valve on the pressure taking pipe can close the pipeline of the pressure taking pipe; furthermore, when the pressure taking flange is dismounted, the production line does not need to be stopped, and the sampling flange can be dismounted independently. Compared with the mode that the sampling flange is removed after the pressure of the whole water separation separator is relieved, the sampling flange provided by the utility model can effectively shorten the removal time of the sampling flange.
Furthermore, on the end face of the flange body, which is in contact with the end of the pressure tapping pipe, an annular groove is formed in the end face of the flange body, and a sealing ring is arranged in the annular groove. Through above-mentioned structure, can guarantee effectively to get the leakproofness between pressure pipe and the flange body.
Furthermore, a pressure gauge is arranged on the two valve groups and used for detecting the pressure in the flow channel. Through above-mentioned structure, the operator of being convenient for knows the inside pressure of runner, and then when carrying out the pressure release to sample flange inside, whether there is pressure in the accurate judgement sample flange of the operator of being convenient for.
Furthermore, the outlet ends of the two valve groups are connected with a first guide pipe, and the first guide pipe is used for guiding the liquid or gas in the first installation channel into a waste liquid treatment device. The liquid or gas inside the sampling flange and the like are not directly discharged to the air, and the liquid or gas inside the sampling flange can be effectively prevented from polluting the environment through the structure.
Furthermore, a second installation channel is further formed in the side face of the flange body and communicated with the flow channel, and a plug is installed in the second installation channel.
When the sampling flange provided by the utility model is used, the plug is positioned at the lowest position, namely the plug is positioned at the lowest end of the flange body after the sampling flange is connected with the pressure sampling pipe. Thus, the liquid or foreign substances in the flow passage can be effectively discharged through the first installation passage and the plug.
Furthermore, a flow guide hole is formed in the plug, one end of the flow guide hole is communicated with the second installation channel, a second flow guide pipe is installed at the other end of the flow guide hole, and the second flow guide pipe is used for guiding liquid or gas in the second installation channel into the waste liquid treatment device; and the plug is also provided with a second switch valve for opening or closing the diversion hole. Through above-mentioned structure, can avoid the inside liquid of sample flange or gas etc. to cause the pollution to the environment effectively.
On the other hand, the utility model also provides a natural gas filtering system with the water separator, which comprises the water separator, wherein the water separator is provided with an air inlet, an air outlet and a pressure tapping pipe, the pressure tapping pipe is provided with a first switch valve for opening or closing a pipeline of the pressure tapping pipe, the natural gas filtering system also comprises the pressure tapping flange, the pressure tapping flange is arranged at the end part of the pressure tapping pipe section, and the pressure tapping flange is also provided with a flange liquid level transmitter.
In the natural gas filtering system with the water separator, gas enters the water separator from the gas inlet for filtering separation and then is discharged from the gas outlet. The natural gas filtering system with the water separator further comprises a sampling flange and a pressure sampling pipe, wherein a first switch valve is arranged on the pressure sampling pipe; the flange that takes a sample includes the flange body, and flange body inside has the runner, and the one end and the pressure pipe of runner are linked together, and flange liquid level transmitter is installed to the other end of runner. In the normal use process, first ooff valve is in the open mode to can measure the pressure value in getting the pressure tube through flange liquid level transmitter, and then can calculate the inside liquid level parameter value of water separator.
In addition, the sampling flange is provided with two valve groups on the flange body, and the two valve groups are communicated with a flow channel inside the flange body through a first mounting channel. Therefore, when the natural gas filtering system with the water separator provided by the utility model is used, when the sampling flange needs to be dismounted, the ball valve on the pressure sampling pipe can be closed firstly, then the switch valve on the valve group is opened, so that the pressure in the flow channel is relieved, and the sampling flange is dismounted after the pressure relief in the flow channel is finished.
In addition, in the dismounting process of the sampling flange, the pressure relief of the internal pressure of the sampling flange can be finished through the two valve groups on the flange body, and the ball valve on the pressure taking pipe can close the pipeline of the pressure taking pipe; furthermore, when the pressure taking flange is dismounted, the production line does not need to be stopped, and the sampling flange can be dismounted independently. Compared with the mode that the sampling flange is removed after the pressure of the whole water separation separator is relieved, the natural gas filtering system with the water separation separator can effectively shorten the removal time of the sampling flange.
Further, still include waste liquid treatment device, the exit end of two valves pass through first honeycomb duct with waste liquid treatment device links to each other, the plug pass through the second honeycomb duct with waste liquid treatment device links to each other.
Through above-mentioned structure, can avoid the inside liquid or gaseous etc. of sample flange to cause the pollution to the environment.
Furthermore, the waste liquid treatment device is a reaction box or a reaction barrel filled with alkali liquor. The natural gas generally contains acidic gas, and the structure can perform neutralization reaction on the acidic gas, so that the pollution of liquid or gas and the like in the sampling flange to the environment can be avoided.
Furthermore, the number of the pressure sampling pipes is at least two. Through the structure, the pressure value in the pressure taking pipe can be accurately measured, and then the liquid level parameter value in the water separator can be calculated.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. in the process of using the sampling flange provided by the utility model, when the sampling flange needs to be removed, the ball valve on the pressure sampling pipe can be closed firstly, and then the pressure inside the sampling flange is relieved through the two valve groups. In addition, in the dismounting process of the sampling flange, the pressure relief of the internal pressure of the sampling flange can be finished through the two valve groups on the flange body, and the ball valve on the pressure taking pipe can close the pipeline of the pressure taking pipe; furthermore, when the pressure taking flange is dismounted, the production line does not need to be stopped, and the sampling flange can be dismounted independently. Compared with the mode that the sampling flange is removed after the pressure of the whole water separation separator is relieved, the sampling flange provided by the utility model can effectively shorten the removal time of the sampling flange.
2. In the natural gas filtering system with the water separator, gas enters the water separator from the gas inlet for filtering separation and then is discharged from the gas outlet. The natural gas filtering system with the water separator further comprises a sampling flange and a pressure sampling pipe, wherein a first switch valve is arranged on the pressure sampling pipe; the flange that takes a sample includes the flange body, and flange body inside has the runner, and the one end and the pressure pipe of runner are linked together, and flange liquid level transmitter is installed to the other end of runner. In the normal use process, first ooff valve is in the open mode to can measure the pressure value in getting the pressure tube through flange liquid level transmitter, and then can calculate the inside liquid level parameter value of water separator.
In addition, in the dismounting process of the sampling flange, the pressure relief of the internal pressure of the sampling flange can be finished through the two valve groups on the flange body, and the ball valve on the pressure taking pipe can close the pipeline of the pressure taking pipe; furthermore, when the pressure taking flange is dismounted, the production line does not need to be stopped, and the sampling flange can be dismounted independently. Compared with the mode that the sampling flange is removed after the pressure of the whole water separation separator is relieved, the natural gas filtering system with the water separation separator can effectively shorten the removal time of the sampling flange.
Drawings
Fig. 1 is a schematic structural view of a conventional water separator.
Fig. 2 is a schematic structural view of a pressure measuring flange in embodiment 1.
Fig. 3 is a schematic structural diagram of the pressure measuring flange in example 1 (without the first flow pipe and the second flow pipe).
Fig. 4 is a schematic structural view of a flange body in embodiment 1.
Fig. 5 is a schematic structural view of embodiment 2.
Fig. 6 is an enlarged schematic view of a portion a in fig. 5.
The labels in the figure are: 1-pressure taking flange, 11-flange body, 111-flow channel, 112-first installation channel, 113-annular groove, 12-two valve groups, 13-sealing ring, 14-pressure gauge, 15-first flow guide pipe, 16-second installation channel, 17-plug, 171-flow guide hole, 18-second flow guide pipe, 19-second switch valve, 2-water separator, 21-air inlet, 22-air outlet, 23-pressure taking pipe, 3-first switch valve, 4-flange liquid level transmitter and 5-waste liquid treatment device.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Example 1
This embodiment 1 provides a pressure tapping flange 1.
As shown in fig. 2 to 4, the present embodiment 1 includes a flange body 11, and a flow passage 111 is provided inside the flange body 11. Preferably, the flange body 11 may be provided with a cylindrical structure. In use of this embodiment 1, one end of the flow passage 111 is used to communicate with the pressure tapping pipe 23, and the other end of the flow passage 111 is used to mount the flange level transmitter 4. Therefore, the pressure value in the flow channel 111 can be measured by the flange liquid level transmitter 4, and the parameter value of the liquid level in the water separation separator 2 can be calculated.
As shown in fig. 4, in the present embodiment 1, a first mounting channel 112 and a second mounting channel 16 are opened on a side surface of the flange body 11, and both the first mounting channel 112 and the second mounting channel 16 are communicated with the flow passage 111. Preferably, the first mounting channel 112 and the second mounting channel 16 may each be selected as circular through holes; more specifically, the first mounting channel 112 and the second mounting channel 16 may each be selectively threaded. Two valve blocks 12 are installed in the first installation passage 112, and a plug 17 is installed in the second installation passage 16.
In embodiment 1, two valve sets 12 are disposed on the flange body 11, and the two valve sets 12 are communicated with the flow passage 111 inside the flange body 11 through the first mounting passage 112. Therefore, in the process of using the embodiment 1, when the sampling flange needs to be removed, the ball valve on the pressure sampling pipe 23 can be closed first, and then the on-off valves on the two valve banks 12 are opened, so that the pressure inside the flow passage 111 can be relieved; after the pressure inside the flow passage 111 is relieved, the sampling flange is removed.
When the embodiment 1 is used, the plug 17 may be located at the lowest position, that is, the plug 17 is located at the lowest end of the flange body 11 after the embodiment 1 is connected to the pressure tapping pipe 23. So that the liquid or foreign substances in the flow passage 111 can be effectively discharged through the first installation passage 112 and the plug 17.
Further, as shown in fig. 2 and 3, the first delivery pipe 15 is connected to the outlet end of the valve group 12 in the embodiment 1; the plug 17 of this embodiment 1 is provided with a flow guide hole 171, the plug 17 is provided with a second on-off valve 19, and the second on-off valve 19 can open or close the flow guide hole 171. Preferably, the guide hole 171 may be selected as a circular through hole, and the second switching valve 19 may be selected as a ball valve; and one end of the diversion hole 171 is communicated with the second installation passage 16, and the other end is provided with the second diversion pipe 18. Thus, the liquid, gas, or the like in the first installation path 112 can be introduced into the waste liquid treatment apparatus 5 through the first guide pipe 15 in the present embodiment 1, and the liquid, gas, or the like in the second installation path 16 can be introduced into the waste liquid treatment apparatus 5 through the second guide pipe 18 in the present embodiment 1. In the practical use process of this embodiment 1, the liquid or gas inside the sampling flange should not be directly discharged to the air, but in this embodiment 1, the liquid or gas inside the sampling flange can be introduced into the waste liquid treatment device 5 through the first flow guide pipe 15 and the second flow guide pipe 18, so that the pollution of the liquid or gas inside the sampling flange to the environment can be effectively avoided.
As shown in fig. 2 and 4, on the end surface of the flange body 11 contacting with the end of the pressure sampling pipe 23, an annular groove 113 is opened on the end surface of the flange body 11 in the embodiment 1, and a sealing ring 13 is disposed in the annular groove 113. So that the sealability between the pressure pipe 23 and the flange body 11 can be effectively ensured.
Further, as shown in fig. 2 and 3, in the present embodiment 1, a pressure gauge 14 is provided on the valve group 12, and the pressure in the flow passage 111 is detected by the pressure gauge 14. Therefore, an operator can know the pressure inside the flow channel 111 conveniently, and then when the pressure is relieved inside the sampling flange, the operator can judge whether the pressure still exists in the sampling flange accurately or not.
Therefore, in the process of using this embodiment 1, when the sampling flange needs to be removed, the ball valve on the pressure sampling pipe 23 can be closed first, and then the pressure relief is completed to the pressure inside the sampling flange through the two valve sets 12 on this embodiment 1. In addition, in the process of removing the sampling flange, the pressure relief of the internal pressure of the sampling flange can be completed through the two valve groups 12 on the flange body 11, and the ball valve on the pressure taking pipe 23 can close the pipeline of the pressure taking pipe 23; furthermore, when the pressure-tapping flange 1 is removed, the sampling flange can be removed alone without stopping the production line. Compare in carrying out the pressure release to whole water separator 2 after, demolish the mode of sample flange again, can shorten the time of demolising the sample flange effectively through this embodiment 1.
Example 2
This embodiment 2 provides a natural gas filtration system with a water separator 2.
As shown in fig. 5 and 6, the present embodiment 2 includes a water separator 2, the water separator 2 is provided with an air inlet 21, an air outlet 22 and a pressure-taking pipe 23, the pressure-taking pipe 23 is provided with a first on-off valve 3, and the first on-off valve 3 is used for opening or closing a pipeline of the pressure-taking pipe 23. Preferably, the first switching valve 3 may be selected as a ball valve.
This embodiment 2 still includes pressure taking flange 1 in embodiment 1, and pressure taking flange 1 installs the tip at pressure taking pipe 23 section, and still installs flange liquid level transmitter 4 on pressure taking flange 1.
In the present embodiment 2, the gas enters the water separator 2 from the gas inlet 21 for filtration and separation, and then is discharged from the gas outlet 22. The embodiment 2 further comprises a sampling flange and a pressure sampling pipe 23, wherein the pressure sampling pipe 23 is provided with a first switch valve 3; the sampling flange comprises a flange body 11, a flow channel 111 is arranged in the flange body 11, one end of the flow channel 111 is communicated with the pressure sampling pipe 23, and the other end of the flow channel 111 is provided with a flange liquid level transmitter 4. In the normal use process, first ooff valve 3 is in the open mode to can measure the pressure value in the pressure pipe 23 through flange liquid level transmitter 4, and then can calculate the inside liquid level parameter value of water separator 2.
In addition, the sampling flange is provided with two valve sets 12 on the flange body 11, and the two valve sets 12 are communicated with a flow passage 111 inside the flange body 11 through a first mounting passage 112. Therefore, when this embodiment 2 uses, when the sample flange needs to be dismantled, can close the ball valve on the pressure pipe 23 earlier, then open the ooff valve on two valves 12 again to carry out the pressure release to the inside pressure of runner 111, after the pressure release in runner 111 was accomplished, again demolish the sample flange.
In addition, in the process of removing the sampling flange, the pressure relief of the internal pressure of the sampling flange can be completed through the two valve groups 12 on the flange body 11, and the ball valve on the pressure taking pipe 23 can close the pipeline of the pressure taking pipe 23; furthermore, when the pressure-tapping flange 1 is removed, the sampling flange can be removed alone without stopping the production line. Compare in carrying out the pressure release to whole water separator 2, demolish the mode of sample flange again, can shorten the time of demolising the sample flange effectively through this embodiment 2.
Further, the present embodiment 2 further includes a waste liquid treatment device 5, and preferably, the waste liquid treatment device 5 is a reaction tank or a reaction barrel filled with alkali liquor. The outlet end of the two valve groups 12 is connected with the waste liquid treatment device 5 through a first guide pipe 15, and the plug 17 is connected with the waste liquid treatment device 5 through a second guide pipe 18. The natural gas generally contains acidic gas, and in this embodiment 2, the liquid, gas, or the like inside the sampling flange can be introduced into the waste liquid treatment device 5 to perform a neutralization reaction, thereby avoiding environmental pollution.
In this embodiment 2, the number of the pressure sampling pipes 23 is at least two, so that the pressure value in the pressure sampling pipe 23 can be accurately measured, and the liquid level parameter value inside the water separator 2 can be calculated. Specifically, in the view shown in fig. 5, two pressure-taking pipes 23 are provided, and the two pressure-taking pipes 23 are provided at intervals in the height direction of the water separator 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A pressure tapping flange (1), characterized in that: the flange comprises a flange body (11), wherein a flow channel (111) is arranged in the flange body (11), one end of the flow channel (111) is used for being communicated with the end part of a pressure tapping pipe (23), and the other end of the flow channel (111) is used for installing a flange liquid level transmitter (4); a first mounting channel (112) is formed in the side face of the flange body (11), the first mounting channel (112) is communicated with the flow channel (111), and two valve banks (12) are mounted in the first mounting channel (112).
2. Pressure tapping flange (1) according to claim 1, characterized in that: on the end face of the flange body (11) contacting with the end part of the pressure sampling pipe (23), an annular groove (113) is formed in the end face of the flange body (11), and a sealing ring (13) is arranged in the annular groove (113).
3. Pressure tapping flange (1) according to claim 1, characterized in that: and a pressure gauge (14) is arranged on the two valve groups (12), and the pressure gauge (14) is used for detecting the pressure in the flow channel (111).
4. Pressure tapping flange (1) according to claim 1, characterized in that: the outlet end of the two valve groups (12) is connected with a first guide pipe (15), and the first guide pipe (15) is used for guiding liquid or gas in the first installation channel (112) into the waste liquid treatment device (5).
5. Pressure tapping flange (1) according to any one of claims 1-4, characterized in that: and a second mounting channel (16) is further formed in the side face of the flange body (11), the second mounting channel (16) is communicated with the flow channel (111), and a plug (17) is mounted in the second mounting channel (16).
6. Pressure tapping flange (1) according to claim 5, characterized in that: a flow guide hole (171) is formed in the plug (17), one end of the flow guide hole (171) is communicated with the second mounting channel (16), a second flow guide pipe (18) is mounted at the other end of the flow guide hole, and the second flow guide pipe (18) is used for guiding liquid or gas in the second mounting channel (16) into the waste liquid treatment device (5); and a second switch valve (19) for opening or closing the diversion hole (171) is further installed on the plug (17).
7. The utility model provides a natural gas filtration system of area moisture separator (2), includes moisture separator (2), be provided with air inlet (21), gas outlet (22) and pressure pipe (23) on moisture separator (2), be provided with on pressure pipe (23) and be used for opening or close first ooff valve (3) of pressure pipe (23) pipeline, its characterized in that:
the pressure tapping flange (1) is characterized by further comprising a pressure tapping flange (1) according to claim 5, wherein the pressure tapping flange (1) is installed at the end of the pressure tapping pipe (23) section, and a flange liquid level transmitter (4) is further installed on the pressure tapping flange (1).
8. The natural gas filtration system with water separator (2) of claim 7, characterized in that: still include waste liquid treatment device (5), the exit end of two valves (12) through first honeycomb duct (15) with waste liquid treatment device (5) link to each other, plug (17) through second honeycomb duct (18) with waste liquid treatment device (5) link to each other.
9. The natural gas filtration system with water separator (2) of claim 8, characterized in that: the waste liquid treatment device (5) is a reaction box or a reaction barrel filled with alkali liquor.
10. The natural gas filtration system with water separator (2) according to any one of claims 7 to 9, characterized in that: the number of the pressure sampling pipes (23) is at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122365395.3U CN215799352U (en) | 2021-09-28 | 2021-09-28 | Pressure taking flange and natural gas filtering system with water separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122365395.3U CN215799352U (en) | 2021-09-28 | 2021-09-28 | Pressure taking flange and natural gas filtering system with water separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215799352U true CN215799352U (en) | 2022-02-11 |
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ID=80167540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122365395.3U Active CN215799352U (en) | 2021-09-28 | 2021-09-28 | Pressure taking flange and natural gas filtering system with water separation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215799352U (en) |
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2021
- 2021-09-28 CN CN202122365395.3U patent/CN215799352U/en active Active
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