CN215394966U - Throttle valve seat puller - Google Patents
Throttle valve seat puller Download PDFInfo
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- CN215394966U CN215394966U CN202022977960.7U CN202022977960U CN215394966U CN 215394966 U CN215394966 U CN 215394966U CN 202022977960 U CN202022977960 U CN 202022977960U CN 215394966 U CN215394966 U CN 215394966U
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- valve seat
- wedge
- lead screw
- rod
- pulling sleeve
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Abstract
The utility model discloses a throttle valve seat puller, which comprises a lead screw, a pulling sleeve, a wedge block and a driving device, wherein the pulling sleeve is arranged on the lead screw; the driving device is in transmission connection with the lead screw, the pulling sleeve is sleeved at the tail end of the lead screw in a threaded manner and can be clamped on the side wall of the valve seat, and an accommodating through hole is formed in the outer wall of the pulling sleeve; the end-to-end connection of lead screw has the connecting rod, and the connecting rod is located to take off and draws the cover, and the diameter is along the direction grow that is close to the lead screw, and the wedge inboard can slide and install on the connecting rod, and in the wedge outside extended to holding the through-hole, the connecting rod can promote the wedge and extend to hold through-hole and joint in the disk seat. When the wedge-shaped block is clamped with the valve seat in place, the driving device pulls the lead screw to pull the valve seat out of the valve body. The utility model avoids taking out the valve seat by knocking or hammering the valve seat, avoids damaging the valve seat and saves manpower.
Description
Technical Field
The utility model relates to the technical field of maintenance of well control equipment of petroleum drilling, in particular to a throttling valve seat puller.
Background
In the process of oil and gas drilling, after the well is shut down in dangerous situations such as overflow, well kick and the like, the throttling blowout and killing operations are carried out through the drilling cross joint, the blowout prevention pipeline, the throttling manifold, the blowout pipeline and other pipelines so as to recover the control of a well head.
In the throttling and blowing process, the flat valves and the like of the pipelines are opened and closed in place once, and only the throttle valve is used for controlling the bottom hole pressure and continuously carrying out automatic or manual opening adjustment according to the sleeve pressure. In operation, the core components, namely the valve core and the valve seat, of the throttle valve are always subjected to the erosion of fluid in a well. Because the fluid is wrapped with solid-phase particles such as rock debris and the like, the pressure is high, the fluctuation range is large, and H is often accompanied2S、CO2And corrosive media overflowing from the well easily cause corrosion damage to the valve core and the valve seat.
After the throttle valve is failed, the flow channel is changed on site to use another spare throttle valve, and then the damaged throttle valve is immediately subjected to valve core replacement and valve seat rush repair operation so as to ensure that the spare throttle valve can be immediately restarted after being damaged.
To replace the throttle valve, the throttle valve is usually removed from the manifold as a whole, and the valve element is then tapped or hammered from the fluid outlet by a chisel, hammer, or the like. This extensive disassembly can easily result in damage to the valve seat and valve body, and can be labor intensive.
Therefore, how to reliably remove the valve seat and reduce the labor consumption is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a throttling valve seat remover, which can abandon a rough operation mode of knocking and hammering due to no special tool for field and workshop maintenance, so that the valve seat removing work is labor-saving, time-saving and high in efficiency, the difficulty and risk brought to the throttling blowout operation by the throttle valve maintenance work of valve seat removing can be reduced, and a core device guarantee is provided for smooth well control emergency operation on the field.
In order to achieve the above object, the present invention provides the following solutions:
a throttle valve seat puller comprises a screw rod, a pulling sleeve, a wedge block and a driving device;
the driving device is in transmission connection with the lead screw, the pulling sleeve is sleeved at the tail end of the lead screw in a threaded mode and can be clamped on the side wall of the valve seat, and an accommodating through hole is formed in the outer wall of the pulling sleeve;
the end-to-end connection of lead screw has the connecting rod, the connecting rod is located pull the cover in, and the diameter along being close to the direction grow of lead screw, but wedge inboard sliding installation is in on the connecting rod, just the wedge outside extends to hold in the through-hole, the connecting rod can promote the wedge extends hold through-hole and joint in the disk seat.
In a specific embodiment, the number of the wedge-shaped blocks is multiple, and the wedge-shaped blocks are annularly and uniformly distributed along the axial lead of the connecting rod;
the number of the accommodating through holes is equal to that of the wedge blocks, and the accommodating through holes are in one-to-one correspondence with the wedge blocks.
In another specific embodiment, the connecting rod comprises a first constant diameter rod, a tapered rod and a second constant diameter rod arranged coaxially;
the diameter of the first constant diameter rod is smaller than that of the second constant diameter rod, two ends of the conical rod are respectively connected with the first constant diameter rod and the second constant diameter rod, the diameter of the connecting end of the conical rod and the first constant diameter rod is equal to that of the first constant diameter rod, the diameter of the connecting end of the conical rod and the second constant diameter rod is equal to that of the second constant diameter rod, and the second constant diameter rod is connected with the tail end of the lead screw;
when the wedge-shaped block is positioned on the first constant-diameter rod, the outer side of the wedge-shaped block is placed in the accommodating through hole;
when the wedge-shaped block is positioned on the second equal-diameter rod, the outer side of the wedge-shaped block extends out of the accommodating through hole and can be matched with a conical surface in the valve seat.
In another specific embodiment, a limiting boss is arranged on the pulling sleeve;
when the pulling sleeve just extends into the position of the valve seat which is preset to be wedged, the limiting boss can be abutted to the valve body.
In another specific embodiment, the throttle seat extractor further comprises a positioning nut;
the positioning nut is in threaded connection with the lead screw, and when the wedge block moves to the second equal-diameter rod, the positioning nut is abutted to the end, far away from the wedge block, of the pulling sleeve.
In another specific embodiment, the retaining nut is an interlocking double nut.
In another specific embodiment, the throttle seat extractor further comprises a disc centralizer;
the disc type centralizer is sleeved outside the lead screw, and the excircle of the disc type centralizer is in clearance fit with the front end of the inner hole of the valve body.
In another specific embodiment, the drive means comprises a hydraulic cylinder and a hydraulic pressure source;
the hydraulic source is in transmission connection with the hydraulic cylinder, the driving end of the hydraulic cylinder is in transmission connection with the lead screw, and the hydraulic cylinder and the lead screw are coaxially arranged.
In another specific embodiment, the throttle seat extractor further comprises a hydraulic cylinder support;
the hydraulic cylinder support is used for mounting the hydraulic cylinder.
In another specific embodiment, the hydraulic cylinder is a one-way cylinder, and the hydraulic source is a manual hydraulic pump;
and/or
The lead screw is connected with the puller sleeve through acme trapezoidal threads.
The various embodiments according to the utility model can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the utility model and are part of the specific embodiments of the utility model.
When the throttling valve seat puller disclosed by the utility model is used, the driving device drives the screw rod to drive the pulling sleeve and the wedge block to extend into the valve body until the pulling sleeve just extends into a preset wedging valve seat position, then the screw rod rotates, and the pulling sleeve is abutted against the side wall of the valve body, so that the pulling sleeve is not moved, the wedge block extends into an accommodating through hole formed in the pulling sleeve and does not move along with the screw rod, and the connecting rod can push the wedge block to extend out of the accommodating through hole so as to be clamped in the valve seat; when the wedge-shaped block is clamped with the valve seat in place, the driving device pulls the lead screw to pull the valve seat out of the valve body. The utility model avoids taking out the valve seat by knocking or hammering the valve seat, avoids damaging the valve seat and saves manpower.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without novelty work.
FIG. 1 is a schematic front view of a throttle seat extractor according to an embodiment of the present invention;
FIG. 2 is a schematic illustration in partial cross-sectional view of a throttle seat extractor installed in a valve seat in accordance with an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a valve seat provided by an embodiment of the present invention;
FIG. 4 is a schematic view of a throttle seat extractor about to be installed in a valve body according to an embodiment of the present invention;
FIG. 5 is a schematic view of a throttle seat extractor incorporated into a valve body in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of a throttle seat extractor wedging a valve seat according to an embodiment of the present invention;
fig. 7 is a schematic diagram of the valve seat gradually separating from the valve body after hydraulic pressure is applied to the throttle seat extractor provided by the embodiment of the utility model.
Wherein, in fig. 1-7:
the hydraulic control valve comprises a throttle valve 900, a valve seat 901, a conical surface 9011, a valve body 902, a throttle valve seat extractor 1000, a lead screw 100, a pulling sleeve 200, a wedge block 300, a connecting rod 500, a first equal-diameter rod 501, a conical rod 502, a second equal-diameter rod 503, a limiting boss 201, a positioning nut 600, a disc centralizer 700, a hydraulic cylinder bracket 800, a driving device 400, a hydraulic cylinder 401 and a manual hydraulic pump 402.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any new effort, are within the scope of the utility model.
As shown in fig. 1-2, the present invention provides a throttle seat remover 1000 for removing a valve seat 901 in a throttle valve 900. As shown in fig. 3, the throttle valve 900 includes a valve seat 901 and a valve body 902, and the valve seat 901 is mounted in the valve body 902.
The throttle valve seat extractor 1000 comprises a lead screw 100, a pull-off sleeve 200, a wedge block 300 and a driving device 400.
The driving device 400 is connected with the head end of the screw 100, and can drive the screw 100 to extend and retract. It is understood that the driving device 400 is any device capable of driving the lead screw 100 to retract, such as an air cylinder or a hydraulic cylinder 401.
The pull-off sleeve 200 is a cylindrical sleeve with an inner cavity, and the inner diameter smaller end of the pull-off sleeve 200 is provided with an internal thread which is sleeved at the tail end of the screw 100. The outer wall of the end with the smaller inner diameter of the pulling sleeve 200 can be clamped on the side wall of the valve seat 901, and specifically, when the pulling sleeve 200 moves in place, the pulling sleeve 200 is just clamped on the side wall of the valve seat 901.
The outer wall of the pull sleeve 200 is provided with accommodating through holes, and specifically, the number of the accommodating through holes can be set according to specific needs.
The end-to-end connection of lead screw 100 has connecting rod 500, and connecting rod 500 is located to take off and draws in the cover 200, and the diameter is along the direction grow that is close to lead screw 100, and wedge 300 inboard can slide and install on connecting rod 500, and the wedge 300 outside extends to and holds in the through-hole, and connecting rod 500 can promote wedge 300 and extend to hold through-hole and joint in disk seat 901.
Specifically, in an initial state, that is, when the throttle seat extractor 1000 is not used, the wedge block 300 is located at the position where the diameter of the connecting rod 500 is the smallest, and at this time, the outer side of the wedge block 300 extends into the accommodating through hole, but does not extend out of the accommodating through hole; when the throttle valve seat extractor 1000 moves in place, that is, when the pull-off sleeve 200 just extends into the position of the predetermined wedged valve seat 901, the lead screw 100 drives the connecting rod 500 to move towards the end far away from the driving device 400, the diameter of the connecting rod 500 becomes larger, and the driving wedge block 300 extends out of the accommodating through hole, so as to clamp the valve seat 901.
In order to further realize uniform force application on the valve seat 901, the screw 100, the connecting rod 500 and the pull sleeve 200 are all located on the same axial line.
It should be noted that the inner side of the wedge block 300 refers to the side of the wedge block 300 facing the connecting rod 500, and the outer side of the wedge block 300 refers to the side of the wedge block 300 facing away from the connecting rod 500.
When the throttle valve seat extractor 1000 disclosed by the utility model is used, the driving device 400 drives the lead screw 100 to drive the pulling sleeve 200 and the wedge block 300 to extend into the valve body 902 until the pulling sleeve 200 just extends into a preset wedging valve seat 901 position, then the lead screw 100 rotates, and as the pulling sleeve 200 is abutted against the side wall of the valve body 902, the pulling sleeve 200 is not moved, and the wedge block 300 extends into an accommodating through hole formed in the pulling sleeve 200 and does not move along with the lead screw 100, so that the connecting rod 500 can push the wedge block 300 to extend out of the accommodating through hole so as to be clamped in the valve seat 901; after the wedge block 300 is clamped with the valve seat 901 in place, the driving device 400 pulls the lead screw 100 to pull out the valve seat 901 from the valve body 902. The utility model avoids taking out the valve seat 901 by knocking or hammering the valve seat 901, avoids damaging the valve seat 901 and saves manpower.
In some embodiments, the number of the wedge blocks 300 is multiple, and the wedge blocks are uniformly distributed along the axial line of the connecting rod 500 in an annular manner, so as to realize uniform clamping of the valve seat 901, avoid the valve seat 901 from being clamped in an inclined manner due to uneven stress, and facilitate the valve seat 901 to be taken out.
The number of the accommodating through holes is equal to that of the wedge blocks 300, and the accommodating through holes and the wedge blocks 300 are arranged in a one-to-one correspondence manner. Specifically, taking 4 wedge blocks 300 as an example, the wedge blocks 300 are formed by linear cutting of a hollow circular truncated cone, and after being excited by the lead screw 100 to eject the pulling sleeve 200, an interrupted conical surface 9011 formed by the outer circle of the wedge block 300 is matched with a conical surface 9011 of an inner hole of the valve seat 901, so that the valve seat 901 can be tightly wedged.
In some embodiments, the connecting rod 500 includes a first equal-diameter rod 501, a tapered rod 502 and a second equal-diameter rod 503 which are coaxially arranged, the first equal-diameter rod 501, the tapered rod 502 and the second equal-diameter rod 503 are sequentially connected end to end, that is, both ends of the tapered rod 502 are respectively connected with the first equal-diameter rod 501 and the second equal-diameter rod 503, the diameter of the end, connected with the first equal-diameter rod 501, of the tapered rod 502 is equal to that of the first equal-diameter rod 501, the diameter of the end, connected with the second equal-diameter rod 503, of the tapered rod 502 is equal to that of the second equal-diameter rod 503, that is, the first equal-diameter rod 501 and the second equal-diameter rod 503 are transited through the tapered rod 502, so as to facilitate the sliding movement of the wedge block 300 between the first equal-diameter rod 501 and the second equal-diameter rod 503.
The first diameter rod 501 has a smaller diameter than the second diameter rod 503, and the second diameter rod 503 is connected to the end of the lead screw 100. When the wedge block 300 is positioned on the first diameter rod 501, the outer side of the wedge block 300 is placed in the accommodating through hole; when the wedge block 300 is located on the second equal-diameter rod 503, the outer side of the wedge block 300 extends out of the accommodating through hole and can be matched with the conical surface 9011 in the valve seat 901.
The wedge block 300 and the connecting rod 500 are in micro clearance fit, so that the wedge block 300 can be prevented from sliding down and extending out of the pull-off sleeve 200 under the action of gravity, the situation that the pull-off sleeve 200 cannot be installed in a preset position of an inner hole of the valve seat 901 due to the fact that the wedge block 300 slides out is avoided, the section of the wedge block 300 is of a T-shaped structure, and the wedge block 300 cannot slide out of the pull-off sleeve 200 and fall off from the pull-off sleeve 200 after assembly is completed.
The connecting rod may include only a tapered rod or the like.
Further, the utility model discloses that the pulling sleeve 200 is provided with a limiting boss 201, and when the wedge block 300 moves the position to be clamped in the valve seat 901, the limiting boss 201 can be abutted against the valve body 902. The limiting boss 201 is specifically a shoulder on the end of the pull-off sleeve 200, and when the limiting boss is assembled, the shoulder abuts against the valve seat 901, so that it can be confirmed that the pull-off sleeve 200 just extends into the position of the predetermined wedged valve seat 901. It should be noted that the limiting boss 201 may be a continuous annular boss, or may be a discontinuous arc segment. The limiting boss 201 can be integrally formed with the pulling sleeve 200 or detachably connected.
In some embodiments, the throttle seat extractor 1000 further includes a positioning nut 600, the positioning nut 600 is screwed on the lead screw 100, and when the wedge block 300 moves to the second equal-diameter rod 503, the positioning nut 600 abuts against the end of the pulling sleeve 200 away from the wedge block 300, so as to bring the wedge block 300 into position.
Further, the present invention discloses that the retention nut 600 is an interlocking double nut. The interlocking double nuts are positioned on the screw 100 according to the maximum position of the wedge block 300, and when the interlocking double nuts abut against the front end of the pulling sleeve 200 and the screw 100 cannot be screwed into the pulling sleeve 200, it can be confirmed that the wedge block 300 is completely extended and wedges the valve seat 901.
Furthermore, the lead screw 100 is connected with the pulling sleeve 200 through ACME (ACME) thick trapezoidal threads, specifically, the length of the female thread of the pulling sleeve 200 is 2 times of the diameter of the male thread of the lead screw 100, the male thread and the female thread are long and screwed, so that sufficient pulling torque is ensured, damage such as cross-threading is not easy to occur, and in addition, the thick trapezoidal threads are convenient to maintain.
In some embodiments, the throttle seat extractor 1000 further comprises a disc centralizer 700, the disc centralizer 700 is sleeved outside the lead screw 100, and the outer circle of the disc centralizer 700 is in clearance fit with the front end of the inner hole of the valve body 902. Specifically, the outer circle of the disc centralizer 700 is in micro-clearance fit with the front end of the inner hole of the valve body 902, that is, the outer diameter of the cylindrical part of the pulling sleeve 200 where the wedge block 300 is assembled is slightly smaller than the inner hole of the valve seat 901, and the micro-clearance fit can ensure that when the pulling sleeve is pulled, the valve body 902, the valve seat 901, the pulling sleeve 200 and the lead screw 100 are on the same axis, and the inclined clamping failure of the valve seat 901 in the valve body 902 cannot occur. The outer diameter is designed with a variety of dimensions that can accommodate different throttle valves 900. More specifically, the outer diameter of the disc centralizer 700 is only 1mm smaller than the inner hole of the front end of the valve body 902 of the throttle valve 900, and the hole diameter of the inner hole of the disc centralizer 700 is 0.4mm larger than the outer diameter of the lead screw 100.
In some embodiments, the driving device 400 includes a hydraulic cylinder 401 and a hydraulic pressure source, the hydraulic pressure source is in transmission connection with the hydraulic cylinder 401, a driving end of the hydraulic cylinder 401 is in transmission connection with the lead screw 100, and the hydraulic cylinder 401 is coaxially arranged with the lead screw 100.
In order to facilitate manufacturing of the hydraulic cylinder 401, the utility model discloses that the throttle seat extractor 1000 further comprises a hydraulic cylinder support 800, and the hydraulic cylinder support 800 is used for mounting the hydraulic cylinder 401.
Further, the utility model discloses that the hydraulic cylinder 401 is a one-way cylinder, and the hydraulic source is a manual hydraulic pump 402. The one-way oil cylinder adopts a simple and easy-to-operate jackscrew to push the piston to reset, so that the structure is simple, the maintenance is easy, and the hydraulic oil can be completely recycled into the external manual hydraulic pump 402 after the use is finished. When an overflow shut-in event occurs, the manual hydraulic pump 402 can meet the requirements for field explosion protection and quick connect quick service.
When the throttle valve seat extractor 1000 provided by the utility model is used, firstly, 4 wedge-shaped blocks 300 are loaded into the pulling and pulling sleeve, then, the lead screw 100 is screwed into the pulling and pulling sleeve through the thick trapezoidal thread, at the moment, the wedge-shaped blocks 300 are limited to move only in the radial direction in the mounting hole of the pulling and pulling sleeve 200, and cannot be separated from the pulling and pulling sleeve 200; then, after the lead screw 100 is manually screwed to the wedge-shaped block 300 and extends out to the maximum position, the lead screw is turned back by 15 degrees to 30 degrees, the interlocking double nuts are screwed into the lead screw 100 to contact the pulling sleeve 200, and the screwing-in and positioning of the lead screw 100 are completed, as shown in fig. 4; then, a pulling end composed of a wedge block 300, a pulling sleeve 200, a lead screw 100 and an interlocking double nut is inserted into the inner hole of the valve seat 901 until the pulling sleeve 200 abuts against the front end of the valve seat 901 and cannot be continuously fed in, as shown in fig. 5; then, the disc centralizer 700 is sleeved into the lead screw 100 and sent into an inner hole of the valve seat 901, so that the lead screw 100 is positioned on the common axis of the valve seat 901 and the valve body 902; then, the screw 100 rotates to drive the wedge block 300 to extend out to clamp the inner hole of the valve seat 901, as shown in fig. 6; then, the hydraulic cylinder bracket 800 is supported between the hydraulic cylinder and the valve body 902, and then the manual hydraulic pump 402 is connected; finally, hydraulic pressure is slowly applied to push the piston to drive the piston rod, the lead screw 100, the pulling sleeve 200, the wedge block 300 and the valve seat 901 are pulled to move towards the outside of the valve body 902 until the valve seat 901 is completely moved out of the valve body 902, as shown in fig. 7.
After the throttle valve 900 is disassembled and put into use or subjected to throttle blowout operation, the rough operation mode of knocking and hammering without special tools in workshops and sites is abandoned, and the device saves labor and time and has high labor efficiency; the problems of deflection and jamming of the valve seat 901 caused by insufficient, asymmetric and uneven knocking force application and the problems of cost increase and maintenance delay caused by deflection of the chisel and collapse and jump error damage to the valve body 902 are solved, and core equipment guarantee is provided for smooth throttling and open flow operation on site.
It should be noted that the terms indicating the orientation in the present document, such as inside and outside, are set in the direction of the drawings in the specification, and are used for convenience of description only and do not have any other specific meanings.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A throttle valve seat puller is characterized by comprising a screw rod, a pulling sleeve, a wedge-shaped block and a driving device;
the driving device is in transmission connection with the lead screw, the pulling sleeve is sleeved at the tail end of the lead screw in a threaded mode and can be clamped on the side wall of the valve seat, and an accommodating through hole is formed in the outer wall of the pulling sleeve;
the end-to-end connection of lead screw has the connecting rod, the connecting rod is located pull the cover in, and the diameter along being close to the direction grow of lead screw, but wedge inboard sliding installation is in on the connecting rod, just the wedge outside extends to hold in the through-hole, the connecting rod can promote the wedge extends hold through-hole and joint in the disk seat.
2. The throttle valve seat extractor as claimed in claim 1, wherein the number of the wedge-shaped blocks is plural, and the wedge-shaped blocks are annularly and uniformly distributed along the axial lead of the connecting rod;
the number of the accommodating through holes is equal to that of the wedge blocks, and the accommodating through holes are in one-to-one correspondence with the wedge blocks.
3. The throttle valve seat puller of claim 1, wherein the connecting rod comprises a first constant diameter rod, a conical rod and a second constant diameter rod arranged coaxially;
the diameter of the first constant diameter rod is smaller than that of the second constant diameter rod, two ends of the conical rod are respectively connected with the first constant diameter rod and the second constant diameter rod, the diameter of the connecting end of the conical rod and the first constant diameter rod is equal to that of the first constant diameter rod, the diameter of the connecting end of the conical rod and the second constant diameter rod is equal to that of the second constant diameter rod, and the second constant diameter rod is connected with the tail end of the lead screw;
when the wedge-shaped block is positioned on the first constant-diameter rod, the outer side of the wedge-shaped block is placed in the accommodating through hole;
when the wedge-shaped block is positioned on the second equal-diameter rod, the outer side of the wedge-shaped block extends out of the accommodating through hole and can be matched with a conical surface in the valve seat.
4. The throttle valve seat extractor as claimed in claim 3, wherein the pulling sleeve is provided with a limit boss;
when the pulling sleeve just extends into the position of the valve seat, which is preset to be wedged, the limiting boss can be abutted against the valve body.
5. The throttle valve seat puller according to claim 3, further comprising a positioning nut;
the positioning nut is in threaded connection with the lead screw, and when the wedge block moves to the second equal-diameter rod, the positioning nut is abutted to the end, far away from the wedge block, of the pulling sleeve.
6. The throttle valve seat puller according to claim 5, wherein the positioning nut is an interlocking double nut.
7. The throttle seat puller according to claim 4, further comprising a disc centralizer;
the disc type centralizer is sleeved outside the lead screw, and the excircle of the disc type centralizer is in clearance fit with the front end of the inner hole of the valve body.
8. The throttle valve seat remover according to any one of claims 1-7, wherein the driving device comprises a hydraulic cylinder and a hydraulic pressure source;
the hydraulic source is in transmission connection with the hydraulic cylinder, the driving end of the hydraulic cylinder is in transmission connection with the lead screw, and the hydraulic cylinder and the lead screw are coaxially arranged.
9. The throttle seat puller according to claim 8, further comprising a hydraulic cylinder support;
the hydraulic cylinder support is used for mounting the hydraulic cylinder.
10. The throttle valve seat remover according to claim 8, wherein the hydraulic cylinder is a one-way cylinder, and the hydraulic source is a manual hydraulic pump;
and/or
The lead screw is connected with the puller sleeve through acme trapezoidal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022977960.7U CN215394966U (en) | 2020-12-09 | 2020-12-09 | Throttle valve seat puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022977960.7U CN215394966U (en) | 2020-12-09 | 2020-12-09 | Throttle valve seat puller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215394966U true CN215394966U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022977960.7U Active CN215394966U (en) | 2020-12-09 | 2020-12-09 | Throttle valve seat puller |
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| Country | Link |
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| CN (1) | CN215394966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116728353A (en) * | 2023-08-15 | 2023-09-12 | 秦皇岛新远船舶机械设备有限公司 | Extractor and extraction method for cylinder cover valve seat of hydraulic four-stroke diesel engine for ship |
-
2020
- 2020-12-09 CN CN202022977960.7U patent/CN215394966U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116728353A (en) * | 2023-08-15 | 2023-09-12 | 秦皇岛新远船舶机械设备有限公司 | Extractor and extraction method for cylinder cover valve seat of hydraulic four-stroke diesel engine for ship |
| CN116728353B (en) * | 2023-08-15 | 2023-10-27 | 秦皇岛新远船舶机械设备有限公司 | Extractor and extraction method for cylinder cover valve seat of hydraulic four-stroke diesel engine for ship |
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