CN210977379U - Sealing device for hydraulic control pipeline crossing - Google Patents
Sealing device for hydraulic control pipeline crossing Download PDFInfo
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- CN210977379U CN210977379U CN202020818730.3U CN202020818730U CN210977379U CN 210977379 U CN210977379 U CN 210977379U CN 202020818730 U CN202020818730 U CN 202020818730U CN 210977379 U CN210977379 U CN 210977379U
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Abstract
The utility model provides a sealing device for hydraulic control pipeline crossing, which relates to the technical field of thermal recovery wellhead devices and comprises a sealing joint, a connecting sealing assembly, a connecting joint and a cutting sleeve sealing assembly; the sealing joint is used for being in sealing connection with the penetrated piece, is in sealing connection with the sealing joint through the clamping sleeve sealing assembly, forms a first seal for the hydraulic control pipeline, is in sealing connection with the connecting joint through the connecting sealing assembly, and forms a second seal for the hydraulic control pipeline; through coupling joint and sealing joint pass through pipe thread sealing connection, greatly reduced the processing degree of difficulty, utilize the pipe thread to have self sealss nature, need not to design other sealing members, when having guaranteed the leakproofness that the hydraulic control pipeline passes through, it is big to have alleviated the sealing device processing degree of difficulty that exists among the prior art, and the precision is difficult to be guaranteed to and can't guarantee the technical problem of whole sealing reliability.
Description
Technical Field
The utility model belongs to the technical field of thermal recovery wellhead assembly technique and specifically relates to a sealing device that is used for hydraulic control pipeline to pass through.
Background
With the shortage of global petroleum resources and the demand for clean energy, the exploitation and utilization of thick oil and geothermal resources are increased in all countries in the world. More than 70% of the existing petroleum resources are thick oil, ultra-thick oil and asphalt resources, and the steam huff and puff thermal recovery technology is mostly adopted for the thick oil recovery.
In the prior art, in a sealing device of a thermal recovery wellhead requiring hydraulic control pipeline to pass through, an upper cover and a sealing joint are generally connected together through a lower pressing cap, and a seal is arranged on the sealing joint; and be provided with preceding cutting ferrule, back cutting ferrule and cutting ferrule joint on sealing joint, realize the second through tightening cutting ferrule joint and seal.
However, in the sealing device for the hydraulic control pipeline in the prior art, a conical surface required by the sealing of the clamping sleeve needs to be processed on the sealing joint, so that the processing difficulty of the whole structure is high, and the precision is difficult to ensure; and the sealing joint and the penetrated piece generally need a sealing washer to realize sealing, the upper and lower contact surfaces of the sealing washer need to be processed into a V-shaped groove form, the processing technology is complex, and the use of the sealing washer cannot ensure the reliability of the integral sealing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sealing device for liquid accuse pipeline passes through to it is big to alleviate the sealing device processing degree of difficulty that exists among the prior art, and the difficult assurance of precision, and can't guarantee the technical problem of whole sealing reliability.
The utility model provides a pair of a sealing device for hydraulic control pipeline passes through, include: the sealing device comprises a sealing joint, a connecting sealing assembly, a connecting joint and a clamping sleeve sealing assembly;
the sealing joint is used for being connected with a penetrated piece, the clamping sleeve sealing assembly is connected with the central channel of the sealing joint in a sealing mode, and one end of the hydraulic control pipeline penetrates through the first sealing channel of the clamping sleeve sealing assembly;
the connecting joint is connected with the sealing joint in a sealing mode through pipe threads, one end, far away from the sealing joint, of the connecting joint is connected with the sealing assembly in a sealing mode, and one end, extending out of the first sealing channel, of the hydraulic control pipeline penetrates through the second sealing channel of the sealing assembly.
In a preferred embodiment of the present invention, the first sealing channel and the second sealing channel are concentrically arranged.
In a preferred embodiment of the present invention, the ferrule seal assembly includes a ferrule seal main body and a back cap connecting portion;
a first connecting channel is arranged in the sealing joint, and the cutting sleeve sealing main body is in sealing connection with the first connecting channel of the sealing joint through pipe threads;
back of the body cap connecting portion are located the sealed main part of cutting ferrule is kept away from the one end of first interface channel, the liquid accuse pipeline passes in proper order back of the body cap connecting portion with the sealed main part of cutting ferrule, back of the body cap connecting portion with the sealed main part threaded connection of cutting ferrule, back of the body cap connecting portion be used for with the liquid accuse pipeline is fixed in the sealed main part of cutting ferrule first sealed passageway.
In a preferred embodiment of the present invention, the connection joint is an integral structure, and a second connection channel for passing through the hydraulic control line is disposed along the extension direction of the connection joint.
In a preferred embodiment of the present invention, the connecting and sealing assembly includes a locking mechanism and a graphite seal;
a sealing groove is formed in one end, far away from the sealing joint, of the connecting joint, the graphite seal is accommodated in the sealing groove, and the locking mechanism is inserted into an opening of the sealing groove so as to apply compressive acting force to the graphite seal in the sealing groove;
the graphite seal and the locking mechanism are sequentially provided with the second seal channel in a penetrating mode.
In a preferred embodiment of the present invention, the locking mechanism comprises a locking cap and a pressing cap;
the locking cap is sleeved outside the pressing cap, and the pressing cap is inserted into the sealing groove through the locking cap.
In the preferred embodiment of the present invention, the utility model further comprises a first gasket and a second gasket;
the first gasket is positioned at the bottom of the sealing groove, the second gasket is positioned between the locking mechanism and the graphite seal, and the second gasket is respectively abutted against the locking mechanism and the graphite seal;
and the first gasket and the second gasket are respectively provided with a through hole for penetrating through the hydraulic control pipeline.
In a preferred embodiment of the present invention, the utility model further comprises a graphite plug;
the outer diameter of the graphite plug is matched with the inner diameter of the sealing groove, the graphite plug is of a solid structure and is used for being accommodated between the locking mechanism and the graphite seal so as to seal the second sealing channel of the graphite seal.
In the preferred embodiment of the present invention, the device further comprises a ferrule plug;
the cutting sleeve plug is located in the sealing joint and used for being in threaded sealing connection with the sealing joint pipe, the cutting sleeve plug is of a solid structure and used for plugging and sealing the first connecting channel of the sealing joint.
In the preferred embodiment of the present invention, the sealing joint is connected with the penetrated member in a sealing manner by a pipe thread, and the connecting position of the sealing joint and the penetrated member is fixed by welding.
The utility model provides a pair of a sealing device for hydraulic control pipeline passes through, include: the sealing device comprises a sealing joint, a connecting sealing assembly, a connecting joint and a clamping sleeve sealing assembly; in the actual operation process, the sealing joint is used for being in sealing connection with the penetrated piece and is in sealing connection with the sealing joint through the ferrule sealing assembly, when the hydraulic control pipeline penetrates through a first sealing channel of the ferrule sealing assembly, a first seal is formed on the hydraulic control pipeline, furthermore, the connecting sealing assembly is in sealing connection with the connecting joint, and when one end, extending out of the first sealing channel, of the hydraulic control pipeline penetrates through a second sealing channel of the connecting sealing assembly, a second seal is formed on the hydraulic control pipeline; through coupling joint and sealing joint pass through pipe thread sealing connection, greatly reduced the processing degree of difficulty, utilize the pipe thread to have self sealss nature, need not to design other sealing members, when having guaranteed the leakproofness that the hydraulic control pipeline passes through, it is big to have alleviated the sealing device processing degree of difficulty that exists among the prior art, and the precision is difficult to be guaranteed to and can't guarantee the technical problem of whole sealing reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a sealing device for hydraulic control pipeline crossing according to an embodiment of the present invention;
fig. 2 is a schematic partial enlarged structural view of a sealing device for hydraulic control pipeline crossing according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the sealing device for hydraulic control pipeline crossing provided by the embodiment of the present invention during plugging and sealing.
Icon: 100-hydraulic control lines; 200-a traversed member; 300-sealing joints; 301-a first connection channel; 400-connecting a sealing assembly; 401-a locking mechanism; 411-a locking cap; 421-pressing a cap; 402-graphite sealing; 403-a second sealed channel; 500-connecting a joint; 501-a second connecting channel; 502-seal groove; 600-ferrule seal assembly; 601-ferrule seal body; 602-a back cap connection; 603-a first sealed channel; 700-a first shim; 800-a second gasket; 900-graphite plugs; 110-ferrule plug.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the present embodiment provides a sealing device for hydraulic control pipeline crossing, including: sealing joint 300, connecting sealing assembly 400, connecting joint 500 and ferrule sealing assembly 600; the sealing joint 300 is used for being connected with the penetrated piece 200, the cutting sleeve sealing assembly 600 is connected with the central channel of the sealing joint 300 in a sealing mode, and one end of the hydraulic control pipeline 100 penetrates through the first sealing channel 603 of the cutting sleeve sealing assembly 600; the connecting joint 500 is connected with the sealing joint 300 in a sealing manner through pipe threads, one end of the connecting joint 500, which is far away from the sealing joint 300, is connected with the connecting sealing assembly 400 in a sealing manner, and one end of the hydraulic control pipeline 100, which extends out of the first sealing channel 603, penetrates through the second sealing channel 403 of the connecting sealing assembly 400.
It should be noted that the sealing device for hydraulic control pipeline crossing provided by this embodiment is mainly applied to a thermal recovery wellhead that needs hydraulic control pipeline 100 to cross, a crossed piece 200 is fixedly installed on the thermal recovery wellhead, and a sealing joint 300 is fixed on the crossed piece 200, so as to form a sealing device that can cross hydraulic control pipeline 100; the sealing device can guarantee that the hydraulic control pipeline 100 enters the integral sealing requirement inside the thermal recovery well head, and further can guarantee the process of conveying hot gas and collecting oil in the thermal recovery well head.
The connecting joint 500 is an integral structure, when the hydraulic control pipeline 100 needs to enter the penetrated part 200, the connecting joint 500 is a sealing structure, the connecting sealing assembly 400 installed inside the connecting joint 500 is utilized, the center of the connecting sealing assembly 400 is provided with a second sealing channel 403 for the hydraulic control pipeline 100 to penetrate through, and the second sealing channel 403 can guarantee the sealing requirement of the pipe wall of the hydraulic control pipeline 100; similarly, the sealing joint 300 is an integral structure fixed with the penetrated piece 200, the hydraulic control pipeline 100 needs to penetrate through the sealing joint 300, the sealing joint 300 is used as another sealing structure, the ferrule sealing assembly 600 is installed inside the sealing joint 300, the center of the ferrule sealing assembly 600 is provided with a first sealing channel 603 for the penetration of the hydraulic control pipeline 100, and the first sealing channel 603 can ensure the sealing requirement of the pipe wall of the hydraulic control pipeline 100.
Specifically, pilot-controlled pipeline 100 is lowered to a predetermined depth through sealing joint 300 and penetrated piece 200; at this time, the cutting sleeve sealing assembly 600 is sleeved on the hydraulic control pipeline 100 by using the first sealing channel 603, and the cutting sleeve sealing assembly 600 can drive the hydraulic control pipeline 100 to be fixed in the central channel of the sealing joint 300 for sealing connection; at this time, the connection joint 500 is sleeved outside the hydraulic control pipeline 100, and is hermetically connected with the connection sealing assembly 400 inside the connection joint 500, and the hydraulic control pipeline 100 is sealed by the connection sealing assembly 400; and then utilize connection seal assembly 400 and cutting ferrule seal assembly 600 can guarantee the multichannel sealed in the hydraulic control pipeline 100 passes through for the design is more reasonable.
In this embodiment, the penetrated member 200 fixedly installed at the thermal production wellhead is provided with a wellhead channel, the sealing joint 300 can be completely inserted into the wellhead channel, and the connection manner between the sealing joint 300 and the penetrated member 200 can be various, for example: a threaded connection, a weld or an interference fit, etc., preferably, the sealing joint 300 and the traversed member 200 may be fixed by external welding.
In the preferred embodiment of the present invention, the sealing joint 300 is connected with the penetrated piece 200 by a pipe thread seal, and the connecting position of the sealing joint 300 and the penetrated piece 200 is fixed by welding; wherein the lower portion of the sealing joint 300 is connected to the traversed member 200 by a generally sealed pipe thread (NPT) and welded to the traversed member 200.
The embodiment provides a sealing device for hydraulic control pipeline crossing, includes: sealing joint 300, connecting sealing assembly 400, connecting joint 500 and ferrule sealing assembly 600; in actual operation, the sealing joint 300 is used for being in sealing connection with the penetrated part 200 and is in sealing connection with the sealing joint 300 through the ferrule sealing assembly 600, when the hydraulic control pipeline 100 passes through the first sealing channel 603 of the ferrule sealing assembly 600, a first seal is formed on the hydraulic control pipeline 100, further, when the hydraulic control pipeline 100 is in sealing connection with the connecting joint 500 through the connecting sealing assembly 400, when one end of the hydraulic control pipeline 100 extending out of the first sealing channel 603 passes through the second sealing channel 403 of the connecting sealing assembly 400, a second seal is formed on the hydraulic control pipeline 100; through attach fitting 500 and sealing joint 300 through pipe thread sealing connection, greatly reduced the processing degree of difficulty, utilize the pipe thread to have self sealss nature, need not to design other sealing members, when having guaranteed the leakproofness that hydraulic control pipeline 100 passed through, it is big to have alleviated the sealing device processing degree of difficulty that exists among the prior art, and the difficult assurance of precision to and can't guarantee the technical problem of whole sealing reliability.
On the basis of the above embodiment, further, in the preferred embodiment of the present invention, the first sealing channel 603 and the second sealing channel 403 are concentrically arranged; because the hydraulic control pipeline 100 needs to pass through the first sealing channel 603 and the second sealing channel 403 in sequence to enter the thermal recovery wellhead, the first sealing channel 603 and the second sealing channel 403 are concentrically arranged, so that the hydraulic control pipeline 100 cannot be bent in the passing process, and the tightness of the hydraulic control pipeline 100 can be better ensured on the basis of ensuring the smoothness of the internal channel of the hydraulic control pipeline 100.
In a preferred embodiment of the present invention, the ferrule seal assembly 600 comprises a ferrule seal body 601 and a back cap connection portion 602; a first connecting channel 301 is arranged in the sealing joint 300, and the cutting sleeve sealing body 601 is connected with the first connecting channel 301 of the sealing joint 300 in a sealing mode through pipe threads; back cap connecting portion 602 is located the one end of cutting ferrule sealed main body 601 far away from first connecting channel 301, and hydraulic control pipeline 100 passes back cap connecting portion 602 and cutting ferrule sealed main body 601 in proper order, and back cap connecting portion 602 and cutting ferrule sealed main body 601 threaded connection, back cap connecting portion 602 are used for being fixed in hydraulic control pipeline 100 in the first sealed channel 603 in cutting ferrule sealed main body 601.
In this embodiment, the lower end of the sealing joint 300 is inserted into the penetrated piece 200, the top of the sealing joint 300 is provided with a first connecting passage 301, the inner wall of the first connecting passage 301 is provided with a pipe thread, the outer side wall of the ferrule sealing main body 601 is also provided with a pipe thread, and when the ferrule sealing main body 601 extends into the first connecting passage 301, the ferrule sealing main body 601 and the sealing joint 300 are in sealing connection through the pipe thread; further, because pilot operated pipeline 100 needs to be inserted into first sealed passageway 603 of cutting ferrule sealed main body 601, utilize back of the body cap connecting portion 602 can adjust the tightness of first sealed passageway 603, when loosening the back of the body cap, can locate pilot operated pipeline 100 outside with cutting ferrule sealed main body 601 through the cover this moment, fix cutting ferrule sealed main body 601 on first connecting channel 301, screw up the back of the body cap and then can make pilot operated pipeline 100 be fixed in first sealed passageway 603 in cutting ferrule sealed main body 601.
In the preferred embodiment of the present invention, the connection joint 500 is an integral structure, and a second connection channel 501 for passing through the hydraulic control line 100 is disposed along the extending direction of the connection joint 500; the connecting joint 500 is connected with the sealing joint 300 in a sealing mode through pipe threads; in order to ensure the concentric structure of the first sealing channel 603 and the second sealing channel 403, the first connecting channel 301 and the second connecting channel 501 may also be concentrically arranged; further, the joint seal assembly 400 is received in the second connecting channel 501, and the second connecting channel 501 and the second seal channel 403 are also concentrically arranged.
In the preferred embodiment of the present invention, the connecting seal assembly 400 includes a locking mechanism 401 and a graphite seal 402; a sealing groove 502 is formed in one end, away from the sealing joint 300, of the connecting joint 500, the graphite seal 402 is accommodated in the sealing groove 502, and the locking mechanism 401 is inserted into an opening of the sealing groove 502 to apply a compression acting force to the graphite seal 402 in the sealing groove 502; the graphite seal 402 and the locking mechanism 401 are provided with a second seal channel 403 running through them in sequence.
Wherein, the locking mechanism 401 can be a locking nut, a locking ferrule or a locking cap 411, in the preferred embodiment of the present invention, the locking mechanism 401 includes a locking cap 411 and a pressing cap 421; the locking cap 411 is sleeved outside the pressing cap 421, the pressing cap 421 is inserted into the sealing groove 502 through the locking cap 411, and the pressing cap 421 is connected with the locking cap 411 through threads.
In the preferred embodiment of the present invention, the present invention further comprises a first gasket 700 and a second gasket 800; the first gasket 700 is positioned at the bottom of the sealing groove 502, the second gasket 800 is positioned between the locking mechanism 401 and the graphite seal 402, and the second gasket 800 is respectively abutted against the locking mechanism 401 and the graphite seal 402; the first gasket 700 and the second gasket 800 are respectively provided with through holes for penetrating the pilot control line 100.
In this embodiment, when the connection sealing assembly 400 is used to perform the second sealing on the pilot-controlled pipeline 100, the first gasket 700, the graphite seal 402, and the second gasket 800 may be sequentially sleeved on the pilot-controlled pipeline 100, and one end of the first gasket 700 is installed in the sealing groove 502, at this time, one end of the pilot-controlled pipeline 100 extending from the ferrule sealing assembly 600 extends out of the sealing groove 502 and the second gasket 800 to the outside of the connection joint 500, at this time, the locking cap 411 is screwed on the pressing cap 421, then the pressing cap 421 is screwed on the connection joint 500, the pressing cap 421 is tightened to make the graphite seal 402 reach a sufficient compression amount, and then the locking cap 411 is screwed clockwise, so that the second sealing of the pilot-controlled pipeline 100 is achieved.
Optionally, when the hydraulic control line 100 does not need to be passed through, in a preferred embodiment of the present invention, a graphite plug 900 is further included; the outer diameter of the graphite plug 900 is matched with the inner diameter of the sealing groove 502, the graphite plug 900 is of a solid structure, and the graphite plug 900 is accommodated between the locking mechanism 401 and the graphite seal 402 to seal and block the second sealing channel 403 of the graphite seal 402.
In the preferred embodiment of the present invention, the present invention further comprises a ferrule plug 110; the ferrule plug 110 is located in the sealing joint 300, the ferrule plug 110 is used for being in threaded sealing connection with the sealing joint 300, the ferrule plug 110 is of a solid structure, and the ferrule plug 110 is used for plugging and sealing the first connecting channel 301 of the sealing joint 300.
In this embodiment, ferrule plug 110 can replace ferrule seal assembly 600, and graphite plug 900 can replace second gasket 800, so that it can still achieve sealing when no pipeline passes through.
Specifically, the ferrule plug 110 may be a pipe thread plug, which is a tight joint, and when the pipe thread plug is connected to the first connection channel 301 of the sealing joint 300, the first connection channel 301 of the sealing joint 300 can be sealed; similarly, the graphite plug 900 is of a solid structure, and after the second gasket 800 is taken out and replaced by the graphite plug 900, the graphite plug 900 can completely block the second sealing channel 403 of the graphite seal 402, so that the sealing performance of the whole structure is still maintained when the hydraulic control pipeline 100 does not need to be penetrated, and cold and hot production alternation is realized, and the graphite plug 900 is suitable for an injection and production integrated wellhead.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A seal for hydraulically controlled line crossing, comprising: the sealing device comprises a sealing joint, a connecting sealing assembly, a connecting joint and a clamping sleeve sealing assembly;
the sealing joint is used for being connected with a penetrated piece, the clamping sleeve sealing assembly is connected with the central channel of the sealing joint in a sealing mode, and one end of the hydraulic control pipeline penetrates through the first sealing channel of the clamping sleeve sealing assembly;
the connecting joint is connected with the sealing joint in a sealing mode through pipe threads, one end, far away from the sealing joint, of the connecting joint is connected with the sealing assembly in a sealing mode, and one end, extending out of the first sealing channel, of the hydraulic control pipeline penetrates through the second sealing channel of the sealing assembly.
2. The seal for hydraulic control line crossing of claim 1, wherein the first seal channel and the second seal channel are concentrically arranged.
3. The sealing device for hydraulic control line crossing of claim 1, wherein the ferrule seal assembly comprises a ferrule seal body and a back cap connection portion;
a first connecting channel is arranged in the sealing joint, and the cutting sleeve sealing main body is in sealing connection with the first connecting channel of the sealing joint through pipe threads;
back of the body cap connecting portion are located the sealed main part of cutting ferrule is kept away from the one end of first interface channel, the liquid accuse pipeline passes in proper order back of the body cap connecting portion with the sealed main part of cutting ferrule, back of the body cap connecting portion with the sealed main part threaded connection of cutting ferrule, back of the body cap connecting portion be used for with the liquid accuse pipeline is fixed in the sealed main part of cutting ferrule first sealed passageway.
4. The sealing device for hydraulic control pipeline crossing as claimed in claim 1, wherein the connecting joint is of a unitary structure, and a second connecting channel for passing through the hydraulic control pipeline is arranged along the extending direction of the connecting joint.
5. The sealing device for hydraulic control line crossing of claim 4, wherein the connecting sealing assembly comprises a locking mechanism and a graphite seal;
a sealing groove is formed in one end, far away from the sealing joint, of the connecting joint, the graphite seal is accommodated in the sealing groove, and the locking mechanism is inserted into an opening of the sealing groove so as to apply compressive acting force to the graphite seal in the sealing groove;
the graphite seal and the locking mechanism are sequentially provided with the second seal channel in a penetrating mode.
6. The sealing device for hydraulic control line crossing of claim 5, wherein the locking mechanism comprises a locking cap and a pressing cap;
the locking cap is sleeved outside the pressing cap, and the pressing cap is inserted into the sealing groove through the locking cap.
7. The sealing device for pilot line crossing of claim 6, further comprising a first gasket and a second gasket;
the first gasket is positioned at the bottom of the sealing groove, the second gasket is positioned between the locking mechanism and the graphite seal, and the second gasket is respectively abutted against the locking mechanism and the graphite seal;
and the first gasket and the second gasket are respectively provided with a through hole for penetrating through the hydraulic control pipeline.
8. The sealing device for hydraulic control pipeline crossing according to claim 6, further comprising a graphite plug;
the outer diameter of the graphite plug is matched with the inner diameter of the sealing groove, the graphite plug is of a solid structure and is used for being accommodated between the locking mechanism and the graphite seal so as to seal the second sealing channel of the graphite seal.
9. The sealing device for hydraulic control pipeline crossing according to any one of claims 1 to 8, further comprising a ferrule plug;
the cutting sleeve plug is located in the sealing joint and used for being in threaded sealing connection with the sealing joint pipe, the cutting sleeve plug is of a solid structure and used for plugging and sealing the first connecting channel of the sealing joint.
10. The sealing device for hydraulic control pipeline crossing according to any one of claims 1 to 8, wherein the sealing joint and the crossed member are in sealing connection through pipe threads, and the connection position of the sealing joint and the crossed member is fixed through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020818730.3U CN210977379U (en) | 2020-05-18 | 2020-05-18 | Sealing device for hydraulic control pipeline crossing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020818730.3U CN210977379U (en) | 2020-05-18 | 2020-05-18 | Sealing device for hydraulic control pipeline crossing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210977379U true CN210977379U (en) | 2020-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020818730.3U Active CN210977379U (en) | 2020-05-18 | 2020-05-18 | Sealing device for hydraulic control pipeline crossing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210977379U (en) |
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2020
- 2020-05-18 CN CN202020818730.3U patent/CN210977379U/en active Active
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