CN220770228U - High-temperature high-pressure micro-pressure opening and closing lifting check valve - Google Patents
High-temperature high-pressure micro-pressure opening and closing lifting check valve Download PDFInfo
- Publication number
- CN220770228U CN220770228U CN202322249315.7U CN202322249315U CN220770228U CN 220770228 U CN220770228 U CN 220770228U CN 202322249315 U CN202322249315 U CN 202322249315U CN 220770228 U CN220770228 U CN 220770228U
- Authority
- CN
- China
- Prior art keywords
- valve
- clack
- spring
- auxiliary
- valve clack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 210000004907 gland Anatomy 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a high-temperature high-pressure micro-pressure opening and closing lifting check valve, which is characterized in that a main sealing pair is of a planar sealing structure, a spring is arranged in a valve clack, the valve clack moves up and down in a guide groove in a valve cover, a valve rod, an auxiliary valve clack, an auxiliary spring and an auxiliary valve seat are arranged in a longitudinal middle cavity of the valve clack, the auxiliary valve clack and the auxiliary valve seat form an auxiliary sealing pair, and the auxiliary sealing pair is of a conical sealing structure. Meanwhile, the main sealing pair and the auxiliary sealing pair are free of nonmetallic sealing parts, so that excessive periodical sealing parts are not needed, and the on-site maintenance period is reduced.
Description
Technical Field
The utility model relates to the technical field of check valves, in particular to a high-temperature high-pressure micro-pressure opening and closing lifting check valve.
Background
The check valve is a special position in a plurality of structures of the valve, plays an important role in various working condition environments, is used as an inactive valve, the valve is controlled by medium, is not suitable for sealing by adopting nonmetallic parts under some high-temperature and high-pressure working conditions, and has the working condition of micro-pressure opening requirement, but the check valve with the micro-pressure opening function is not suitable for the high-temperature and high-pressure working conditions at present.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the high-temperature high-pressure micro-pressure opening and closing lifting type check valve, which can be effectively used under the working condition of high temperature and high pressure and can also greatly meet the requirements of micro-pressure opening and low-pressure reverse sealing.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a high temperature high pressure micropressure opens and shuts lift-type check valve, which comprises a valve body, the valve gap, the valve clack, the disk seat of valve body and valve clack form main seal pair, main seal pair is planar seal structure, be equipped with the spring in the valve clack, the top of spring and the spring groove butt on the valve cover, the valve clack is the guide way in the valve gap is done the up-and-down motion, the vertical well intracavity of valve clack is equipped with the valve rod, the vice valve clack, the vice spring, the vice disk seat is equipped with vice passageway II in the horizontal direction of valve clack, vice passageway I link up with vertical well chamber, vice passageway II communicates with vertical well chamber, vice disk seat and valve clack fixed connection, vice spring bottom and the back butt of vice valve clack, vice spring top and the vice spring step face butt on the valve cover, vice valve clack and vice disk seat form vice seal pair, vice seal pair is conical seal structure, valve rod and vice valve clack fixed connection, the vertical well intracavity of valve rod and valve gap are the guide hole of valve cap.
Preferably, an adjusting nut is arranged between the auxiliary valve clack and the auxiliary spring, the adjusting nut is connected with the valve rod through threads, and a set screw is arranged on the adjusting nut.
Preferably, the auxiliary valve seat is of an inverted funnel shape, and the upper part of the auxiliary valve seat is screwed into the valve clack through threads to be fixed.
Preferably, the secondary channel II is square.
Preferably, a push block and a sealing ring are arranged between the valve cover and the valve body, and the valve cover is fixedly pressed through threaded connection between the gland and the valve body.
Preferably, the contact surface between the sealing ring and the valve body is a conical surface.
Preferably, hard alloy is deposited on the sealing surface of the main sealing pair.
The check valve can be normally used under the working condition of high temperature and high pressure, and can also greatly meet the requirements of micro-pressure opening and low-pressure reverse sealing. Meanwhile, the main sealing pair and the auxiliary sealing pair are free of nonmetallic sealing parts, so that excessive periodical sealing parts are not needed, and the on-site maintenance period is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view of part of A in FIG. 1;
fig. 3 is a partial enlarged view of B in fig. 1.
Wherein, 1, the valve body; 2. a valve cover; 3. a valve flap; 4. a gland; 5. a valve seat; 6. a sub-valve seat; 7. a secondary channel II; 8. a secondary valve flap; 9. an adjusting nut; 10. a set screw; 11. a spring; 12. a secondary spring; 13. a valve stem; 14. a secondary channel I; 15. a pushing block; 16. and (3) sealing rings.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in the figure, the embodiment of the utility model provides a high-temperature high-pressure micro-pressure opening and closing lifting check valve, which comprises a valve body 1, a valve cover 2 and a valve clack 3, wherein a main sealing pair is formed by a valve seat 5 of the valve body 1 and the valve clack 3, the main sealing pair is of a plane sealing structure, hard alloy is deposited on a sealing surface of the main sealing pair, the valve has the advantages of wear resistance, high temperature resistance and the like, compared with conical surface sealing, the plane sealing does not need to consider the problem of error of guiding of the valve clack 3, a spring 11 is arranged in the valve clack 3, the top end of the spring 11 is abutted with a spring groove on the valve cover 2, the valve clack 3 moves up and down in a guide groove in the valve cover 2, and self-sealing of the valve clack 3 is realized through self weight of the valve clack 3, the spring 11 and reverse pressure of a medium.
For realizing micro-pressure opening, a valve rod 13, a secondary valve clack 8, a secondary spring 12 and a secondary valve seat 6 are arranged in a longitudinal middle cavity of the valve clack 3, a secondary channel I14 is arranged in the transverse direction of the valve clack 3, a secondary channel II 7 is arranged in the longitudinal direction of a seat of the secondary valve 6, the secondary channel I14 is communicated with the longitudinal middle cavity, the secondary channel II 7 is square and communicated with the longitudinal middle cavity, the secondary valve seat 6 is of an inverted funnel shape, the upper part of the secondary valve seat 6 is fixed in the valve clack 3 through screw threads, the outer conical surface of the secondary valve seat 6 is abutted with the inner conical surface of the valve clack 3, the sealing effect of metal to metal is realized through screw thread screwing force, and the valve clack is easy to detach and replace. The valve rod 13 is provided with a section of thread, the adjusting nut 9 is screwed in, the auxiliary spring 12 is then arranged, the position of the nut is adjusted through the thread, the spring force of the auxiliary spring 12 is controlled, after the spring force is properly adjusted, the set screw 10 is screwed down, the position of the adjusting nut 9 is fixed, the spring force deviation existing when the auxiliary spring 12 leaves a factory can be avoided, and the valve can be opened and closed under different pressures by controlling the spring force of the auxiliary spring 12. The bottom end of the auxiliary spring 12 is in contact with the back of the auxiliary valve clack 8, and the top end of the auxiliary spring 12 is in contact with the auxiliary spring step surface on the valve cover 2. The auxiliary valve clack 8 and the auxiliary valve 6 seat form an auxiliary sealing pair, the auxiliary sealing pair is of a conical surface sealing structure, a valve rod 13 is fixedly connected with the auxiliary valve clack 8, and the valve rod 13 moves up and down in a longitudinal middle cavity of the valve clack 3 and a guide hole of the valve cover 2.
The push block 15 and the sealing ring 16 are arranged between the valve cover 2 and the valve body 1, the valve cover is fixedly pressed through threaded connection between the gland and the valve body, and the force can act on the sealing ring 16 through the push block 15, and as the inner contact surface of the sealing ring 16 and the valve body 1 is a conical surface, the sealing ring 16 can be deformed inwards under the action of the pushing force of the push block 15 and is inlaid into the outer circular surface of the valve cover, so that a seal is formed, the sealing ring 16 and the inner conical surface of the valve body 1 are sealed for the second time, and the valve body can be repeatedly disassembled and assembled without frequent replacement.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a lift check valve is opened and close to high temperature high pressure micropressure, includes valve body, valve gap, valve clack, its characterized in that: the valve seat and the valve clack of the valve body form a main sealing pair, the main sealing pair is of a plane sealing structure, a spring is arranged in the valve clack, the top end of the spring is in butt joint with a spring groove on the valve cover, the valve clack moves up and down in a guide groove in the valve cover, a valve rod, a secondary valve clack, a secondary spring and a secondary valve seat are arranged in a longitudinal middle cavity of the valve clack, a secondary channel I is transversely arranged on the valve clack, a secondary channel II is longitudinally arranged on the secondary valve seat, the secondary channel I is communicated with the longitudinal middle cavity, the secondary valve seat is fixedly connected with the valve clack, the bottom end of the secondary spring is in butt joint with the back of the secondary valve clack, the top end of the secondary spring is in butt joint with a secondary spring step surface on the valve cover, the secondary valve clack and the secondary valve seat form a secondary sealing pair, the secondary sealing pair is of a conical sealing structure, and the valve rod is fixedly connected with the secondary valve rod and moves up and down in the longitudinal middle cavity of the valve clack and the guide hole of the valve cover.
2. The high temperature high pressure micro pressure start-stop lifting check valve according to claim 1, wherein: an adjusting nut is arranged between the auxiliary valve clack and the auxiliary spring and is in threaded connection with the valve rod, and a set screw is arranged on the adjusting nut.
3. The high temperature high pressure micro pressure start-stop lifting check valve according to claim 2, wherein: the auxiliary valve seat is of an inverted funnel shape, and the upper portion of the auxiliary valve seat is screwed into the valve clack through threads to be fixed.
4. A high temperature high pressure micro pressure on-off lifting check valve according to claim 3, wherein: the secondary channel II is square.
5. The high temperature high pressure micro pressure start-stop lifting check valve according to claim 4, wherein: the valve cover is fixedly pressed through threaded connection between the gland and the valve body.
6. The high temperature high pressure micro pressure start-stop lifting check valve according to claim 5, wherein: the contact surface between the sealing ring and the valve body is a conical surface.
7. The high temperature, high pressure, micro-pressure, open and close lifting check valve of claim 6, wherein: and hard alloy is deposited on the sealing surface of the main sealing pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322249315.7U CN220770228U (en) | 2023-08-22 | 2023-08-22 | High-temperature high-pressure micro-pressure opening and closing lifting check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322249315.7U CN220770228U (en) | 2023-08-22 | 2023-08-22 | High-temperature high-pressure micro-pressure opening and closing lifting check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220770228U true CN220770228U (en) | 2024-04-12 |
Family
ID=90616571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322249315.7U Active CN220770228U (en) | 2023-08-22 | 2023-08-22 | High-temperature high-pressure micro-pressure opening and closing lifting check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220770228U (en) |
-
2023
- 2023-08-22 CN CN202322249315.7U patent/CN220770228U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204176071U (en) | Air energy water-saving mangetic core assembly and delay water faucet | |
| CN201679974U (en) | Expanding high temperature flat valve | |
| CN220770228U (en) | High-temperature high-pressure micro-pressure opening and closing lifting check valve | |
| CN211623376U (en) | High-pressure double-stage self-sealing blowout-preventing wellhead packing box | |
| CN117028626A (en) | High-temperature high-pressure micro-pressure opening and closing lifting check valve | |
| CN210770472U (en) | High-sealing pressure safety valve | |
| CN204739278U (en) | Formula of relying on oneself pilot valve pressure regulating valve of control pressure -fired | |
| CN114776878B (en) | Stainless steel multifunctional front valve | |
| CN202691198U (en) | Gas pressure reducing valve | |
| CN110848429A (en) | Cut-off double-purpose valve | |
| CN2583468Y (en) | Piston type adjustable pressure regulator | |
| CN115288636A (en) | Gas well composite stage type pressure control production system | |
| CN203516884U (en) | Regulating valve with high erosion resistance | |
| CN213088822U (en) | Pneumatic two-position four-way slide valve | |
| CN204985750U (en) | Poor warm water governing valve that subtracts of high pressure | |
| CN204300391U (en) | A kind of two way sealed high-performance butterfly valve | |
| CN203082275U (en) | High-temperature low-flow-resistance selection vale of Y-type channel | |
| CN207999506U (en) | A kind of screw bonnet sealing structure with conical surface elastic packing lip | |
| CN219911764U (en) | High-temperature high-pressure corrosion-resistant manual stop valve | |
| CN216479142U (en) | Intelligent digital electric ultrahigh pressure gas pressure reducing valve | |
| CN219549699U (en) | Back pressure prevention double-sealing spring type safety valve | |
| CN217762144U (en) | Bushing type cock valve with floating cock | |
| CN201258991Y (en) | Regulating plunger type arc tooth form throttle valve | |
| CN213145515U (en) | Right-angle stop valve | |
| CN212804434U (en) | High-temperature and high-pressure resistant balanced valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |