CN219975429U - Hydraulic control floating valve seat reciprocating movement mechanism for valve - Google Patents
Hydraulic control floating valve seat reciprocating movement mechanism for valve Download PDFInfo
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- CN219975429U CN219975429U CN202320205852.9U CN202320205852U CN219975429U CN 219975429 U CN219975429 U CN 219975429U CN 202320205852 U CN202320205852 U CN 202320205852U CN 219975429 U CN219975429 U CN 219975429U
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- 238000007667 floating Methods 0.000 title claims abstract description 145
- 230000007246 mechanism Effects 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 239000012530 fluid Substances 0.000 claims description 88
- 238000001914 filtration Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000013049 sediment Substances 0.000 description 9
- 230000009471 action Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Abstract
The utility model relates to a hydraulic control floating valve seat reciprocating movement mechanism for a valve, which comprises a valve body and a valve clack, wherein the valve body is provided with a floating valve seat, the floating valve seat is provided with a sealing element, and the floating valve seat can axially reciprocate along a pipeline under the pushing of hydraulic force, and the movement of the floating valve seat and the movement of the valve clack are alternately performed. When the valve is opened and closed, the floating valve seat moves towards the direction away from the valve clack, the valve clack starts to move until the sealing element on the floating valve seat is not contacted with the valve clack, and after the valve clack moves in place, the floating valve seat moves back towards the valve clack until the sealing element on the floating valve seat presses the sealing surface of the valve clack. The utility model can improve the sealing effect of the valve and prolong the service life of the valve.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to a hydraulic control floating valve seat reciprocating movement mechanism for a valve, which is particularly suitable for ball valves and gate valves.
Background
When the valve clack moves, the sealing surface of the valve seat is tightly pressed on the surface of the valve clack, so that the sealing surface of the valve seat is easy to be worn or cut, the moving resistance of the valve clack is increased, the service life of the valve is shortened, and the opening and closing energy consumption of the valve is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a hydraulic control floating valve seat reciprocating mechanism for a valve, which is carefully developed and repeatedly tested, the floating valve seat is pushed to reciprocate by utilizing fluid pressure, the reciprocating movement of the floating valve seat and the movement of a valve clack are alternately carried out, when the valve clack moves, a sealing element on the floating valve seat cannot be worn and cut by the valve clack, and the resistance of the valve clack during movement is greatly reduced.
In order to achieve the above purpose, the present utility model adopts the following technical scheme.
A hydraulic control floating valve seat reciprocating movement mechanism for a valve comprises a valve body, a valve clack and an end cover, wherein the valve clack is arranged in an inner cavity of the valve body and is connected with a valve clack driving mechanism at the outer side of the valve body; the valve body is provided with a floating valve seat, one end of the floating valve seat is a sealing end, the sealing end is arranged corresponding to the valve clack, and a sealing element is fixedly arranged on the end face of the sealing end; the other end of the floating valve seat is a driving end, a reset spring is arranged on the end face of the driving end, two hydraulic working cavities are respectively formed by the end face of the floating valve seat and the end faces of the valve body and the end cover, a fluid channel is arranged on the valve body, the end cover or the floating valve seat, the fluid channel corresponds to the two hydraulic working cavities respectively, and the hydraulic working cavities push the floating valve seat to do discontinuous reciprocating movement along the axial direction of the valve pipeline by utilizing the fluid pressure introduced by the fluid channel.
The valve is ball valve and gate valve, the valve clack of ball valve is the valve ball, the valve clack of gate valve is the flashboard, the valve clack of ball valve passes through the ball valve transmission shaft and is connected with the valve clack actuating mechanism in the valve body outside, the valve clack of gate valve passes through the gate valve rod and is connected with the valve clack actuating mechanism in the valve body outside.
As a preferable scheme of the utility model, the floating valve seat is of a stepped cylinder structure with a coaxial variable diameter.
As a preferable scheme of the utility model, the two hydraulic working chambers comprise a first hydraulic working chamber and a second hydraulic working chamber, wherein the first hydraulic working chamber is formed by encircling a stepped end face of a floating valve seat close to one side of a sealing end with a stepped end face on a valve body, the first hydraulic working chamber is communicated with a hydraulic control device outside the valve body through a first fluid channel arranged on the valve body, and the first hydraulic working chamber pushes the floating valve seat to move in a direction away from a valve clack by utilizing the fluid pressure of the hydraulic control device; the second hydraulic working cavity is formed by adopting clearance fit between one section of outer edge of the tail part of the driving end of the floating valve seat and a pipe hole on the end cover.
As a preferable scheme of the utility model, a sealing ring is arranged between the clearance fit matching surfaces of the second hydraulic working cavity, and the sealing ring separates a space formed by surrounding the driving end face of the floating valve seat, the valve body and the cover end from the valve pipeline to form a closed second hydraulic working cavity; the second hydraulic working cavity is communicated with hydraulic control equipment outside the valve body through a second fluid channel arranged on the valve body or the end cover, and the second hydraulic working cavity pushes the floating valve seat to move towards the valve clack by utilizing the fluid pressure of the hydraulic control equipment.
As a preferable scheme of the utility model, a sealing ring is arranged between the clearance fit matching surfaces of the second hydraulic working cavity, and the sealing ring separates a space formed by surrounding the driving end face of the floating valve seat, the valve body and the cover end from the valve pipeline to form a closed second hydraulic working cavity; the second hydraulic working chamber is communicated with an outlet of a filtering device outside the valve body through a second fluid channel arranged on the valve body or the end cover, and an inlet of the filtering device is communicated with a valve pipeline through a third fluid channel arranged on the end cover.
As a preferable scheme of the utility model, the second hydraulic working cavity takes a gap in clearance fit as a fluid channel, so that the second hydraulic working cavity is communicated with a valve pipeline, and the second hydraulic working cavity pushes the floating valve seat to move towards the valve clack by utilizing the fluid pressure in the valve pipeline; simultaneously, the gap matched with the gap is utilized to prevent larger particles in the fluid from entering the second hydraulic working cavity.
As a preferable scheme of the utility model, a fourth fluid channel is arranged on the floating valve seat or the end cover, and the fourth fluid channel communicates the second hydraulic working cavity with the valve pipeline; the fourth fluid channel is arranged at the top of the valve pipeline.
As a preferable scheme of the utility model, one or two floating valve seats are arranged, when one floating valve seat is arranged, a single floating valve seat is arranged on one side of the valve clack, namely the inlet side of fluid in the valve pipeline, and when two floating valve seats are arranged, two floating valve seats are correspondingly arranged on two sides of the valve clack.
The beneficial effects of the utility model are as follows:
the utility model provides a hydraulic control floating valve seat reciprocating movement mechanism for a valve, wherein a floating valve seat is arranged on a valve body, and the floating valve seat is driven to move in a direction away from a valve clack by utilizing hydraulic control equipment outside the valve body; the fluid pressure in the valve pipeline is utilized to push the floating valve seat to move towards the direction of the valve clack, and the sealing piece on the floating valve seat is always tightly pressed on the sealing surface of the valve clack by utilizing the thrust of the fluid in the valve pipeline acting on the end surface of the floating valve seat during the non-opening and closing actions of the valve; or, the hydraulic control equipment outside the valve body is utilized to drive the floating valve seat to move towards the direction of the valve clack, and the hydraulic control equipment outside the valve body is utilized to maintain the pressure of the hydraulic working cavity during the non-opening and closing actions of the valve, so that the sealing piece on the floating valve seat is always tightly pressed on the sealing surface of the valve clack. When the valve is opened and closed, the movement of the floating valve seat and the movement of the valve clack are alternately performed, and the movement of the floating valve seat and the movement of the valve clack comprise the following steps: the first step is to move the floating valve seat away from the valve clack until the sealing element on the sealing end of the floating valve seat and the valve clack are not contacted with each other. And secondly, the valve clack is moved to a position where the valve is opened (or closed). And thirdly, moving the floating valve seat back until the sealing element on the floating valve seat is tightly pressed on the sealing surface of the valve clack, and keeping the tightly pressed state all the time. Therefore, on one hand, the sealing element on the floating valve seat is not worn or cut by the valve clack, the moving resistance of the valve clack is greatly reduced, the service life of the valve is prolonged, and the energy consumption during opening and closing the valve is reduced; on the other hand, when two floating valve seats are arranged, the two floating valve seats are correspondingly arranged on two sides of the valve clack, the sealing piece on the floating valve seat is always tightly pressed on the sealing surface of the valve clack during the period that the valve clack does not move, the valve inner cavity is formed into a closed space, mud sand, ore pulp and other easy-to-deposit matters in fluid in a pipeline can be prevented from entering the valve inner cavity, a flushing port arranged on the valve body can be utilized, and after the valve is opened and closed, the valve inner cavity is flushed once, so that the problems that when the gate valve and the ball valve are in a pipe network containing easy-to-deposit matters such as mud, ore pulp and the like, the valve is always blocked in the valve inner cavity due to the fact that the sediment matters enter the valve inner cavity, the moving resistance of the valve clack is increased, even the valve clack cannot move, the opening and closing functions of the valve are invalid, and the service life of the valve is shortened are solved.
In addition, when the scheme that the floating valve seat is pushed to move towards the direction of the valve clack by adopting the fluid pressure in the valve pipeline is adopted, after the valve is opened and closed, the hydraulic control equipment outside the valve body can be evacuated at any time, and convenience conditions are provided for field operation. And when adopting the outside liquid accuse equipment of valve body, when the scheme that the drive float valve seat moved to the valve clack direction, because of the fluid pressure of liquid accuse equipment output is higher, be favorable to reducing the structural dimension of float valve seat drive end to reduce the manufacturing cost of valve, simultaneously, utilize the outside liquid accuse equipment pressurize of valve body, be convenient for accurate control sealing member to press the pressure on the valve clack sealed face, monitor the sealed effect of valve at any time.
Drawings
In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the technology of the utility model is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description is presented herein for purposes of illustration only and is not intended to limit the utility model.
FIG. 1 is a schematic view showing the construction of an embodiment 1 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
Fig. 2 is a schematic view showing the structure of an embodiment 2 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
Fig. 3 is a schematic view showing the structure of an embodiment 3 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
Fig. 4 is a schematic view showing the structure of an embodiment 4 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
Fig. 5 is a schematic view showing the structure of an embodiment 5 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
Fig. 6 is a schematic view showing the structure of an embodiment 6 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
Fig. 7 is a schematic view showing the construction of an embodiment 7 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
FIG. 8 is a schematic view showing the construction of an embodiment 8 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
Fig. 9 is a schematic view showing the structure of an embodiment 9 of a valve-use hydraulic control float valve seat reciprocating mechanism of the present utility model.
FIG. 10 is a schematic view of an embodiment 10 of a hydraulically controlled floating valve seat shuttle mechanism for a valve according to the present utility model.
The marks in the figure: 1. a left ball valve end cover; 2. a return spring; 3. a ball valve body; 4. a ball valve clack; 5. ball valve drive shaft; 6. a seal; 7. a floating valve seat; 8. a right ball valve end cover; 9. a gate valve body; 10. a valve clack of a sluice valve; 11. a gate valve stem; 12. a left gate valve end cover; 13. a right gate valve end cap; 14. a seal ring; 15. an inner hole of the end cover; 16. a valve conduit;
A. a valve inner cavity; B. a first hydraulic working chamber; C. a third fluid passage, D, fourth fluid passage, E, first fluid passage; F. a second fluid passage; G. and a second hydraulic working chamber.
Description of the embodiments
A valve having a pilot operated float valve seat shuttle according to the present utility model will be explained in more detail with reference to the accompanying drawings.
Examples
As shown in fig. 1, a hydraulic control floating valve seat reciprocating movement mechanism for a valve is used for a ball valve, and comprises a left ball valve end cover 1, a right ball valve end cover 8, a ball valve body 3, a ball valve clack 4, a ball valve transmission shaft 5, a sealing element 6 and a return spring 2, wherein the ball valve clack 4 is arranged in an inner cavity of the ball valve body 3, one ends of the left ball valve end cover 1 and the right ball valve end cover 8 are connected with the ball valve body 3 through a closing bolt, the other ends are provided with a closing hole and a sealing end surface which are connected with a pipeline flange, and the ball valve clack 4 is connected with a clack driving mechanism outside the ball valve body 3 through the ball valve transmission shaft 5; the ball valve body 3 is provided with two floating valve seats 7, two floating valve seats 7 are correspondingly arranged on two sides of the ball valve clack 4, the floating valve seats 7 are of a stepped cylinder structure with a variable diameter coaxially, one end of each floating valve seat 7 is a sealing end, a sealing piece 6 is fixedly arranged on the end face of each sealing end, the sealing piece 6 corresponds to the ball valve clack 4, the other end of each floating valve seat 7 is a driving end, the end face of each driving end is provided with a reset spring 2, in addition, the driving ends of the two floating valve seats 7 are provided with a section of outer edge which is respectively in clearance fit with end cover inner holes on the left ball valve end cover 1 and the right ball valve end cover 8, a gap in clearance fit is used as a fluid channel, the second hydraulic working cavity G is communicated with the valve pipeline 16, the floating valve seat 7 is pushed to move towards the ball valve clack 4 by utilizing the fluid pressure in the valve pipeline, and particles in fluid are prevented from entering the second hydraulic working cavity G by utilizing the characteristic of small clearance fit gap; the first hydraulic working chamber B communicates with a pilot operated device outside the ball valve body 3 via a first fluid passage E provided in the ball valve body 3, and by means of the fluid pressure of this pilot operated device, the floating valve seat 7 is pushed to move in a direction away from the ball valve flap 4.
The floating valve seats 7 arranged at the two sides of the valve clack 4 are driven by hydraulic force to move synchronously, and the moving directions are opposite. I.e. two floating valve seats 7, or move towards each other in synchronism; or synchronously move back and forth.
During the non-opening and closing action of the valve, on one hand, the sealing element 6 on the floating valve seat 7 is always pressed on the sealing surface of the ball valve clack 4 by the fluid pressure in the valve pipeline by means of the difference of the areas of the pressed end surfaces on the floating valve seat 7, and the pressure meets the sealing requirement of the valve. On the other hand, the floating valve seats 7 at the two sides of the ball valve clack 4 form a closed space with the valve cavity A, so that easy sediment such as silt and ore pulp in pipeline fluid can be prevented from entering the valve cavity A, and the fault that the valve cavity A is blocked by the sediment is avoided.
When the valve is opened and closed, the movement of the ball valve clack 4 and the floating valve seat 7 is alternately performed, and the method comprises the following steps of: in a first step, the float valve seat 7 is moved away from the ball valve flap 4 until the seal 6 on the float valve seat 7 and the ball valve flap 4 do not contact each other. In a second step, the ball valve flap 4 is moved to a valve open or closed position. And thirdly, moving the floating valve seat 7 back until the sealing piece 6 on the floating valve seat 7 is tightly pressed on the sealing surface of the valve clack 4 of the ball valve, and keeping a tightly pressed state meeting the sealing requirement. The purpose of the steps is as follows: when the ball valve clack 4 moves, the sealing element 6 on the floating valve seat 7 cannot be worn or cut by the surface and the edge of the ball valve clack 4, and the moving (rotating) resistance of the ball valve clack 4 is reduced, so that the service life of the valve can be prolonged, and the energy consumption of the valve when the valve is opened and closed can be reduced. After the opening and closing actions are completed, the hydraulic control equipment outside the ball valve body 3 can be removed from the site at any time, and the hydraulic control equipment can be simply and conveniently used, so that convenience conditions are provided for field operation.
Examples
As shown in fig. 2, in a hydraulic control floating valve seat reciprocating mechanism for a valve, when the hydraulic control floating valve seat reciprocating mechanism is used for a ball valve, a fourth fluid channel D is arranged on a driving end of a floating valve seat 7, a second hydraulic working cavity G is communicated with a valve pipeline 16, and the fourth fluid channel D is arranged at the top of the valve pipeline so as to prevent easy-to-precipitate particles in fluid from entering the second hydraulic working cavity G. The fourth fluid passage D is provided to enlarge the flow cross-sectional area of the fluid in the valve pipe into and out of the second hydraulic working chamber G. Similarly, the fourth fluid passage D may be provided in the left ball valve end cap 1 and the right ball valve end cap 8 corresponding to the second hydraulic working chamber G. Other specific structures and functions are the same as in example 1.
Examples
As shown in fig. 3, when the hydraulic control floating valve seat reciprocating mechanism for the valve is used for a ball valve, the driving ends of two floating valve seats 7 are provided with a section of outer edges which are respectively in clearance fit with the inner holes of the end covers on the left ball valve end cover 1 and the right ball valve end cover 8, a sealing ring 14 is arranged between the clearance fit gaps to separate a second hydraulic working cavity G from a valve pipeline 16, a first hydraulic working cavity B and a second hydraulic working cavity G are respectively communicated with hydraulic control equipment outside the ball valve body 3 through two first fluid channels E and second fluid channels F which are correspondingly arranged on the ball valve body 3, and the reciprocating movement of the floating valve seats 7 is driven by the hydraulic control equipment outside the ball valve body 3; and during the non-opening and closing period of the valve, the hydraulic control equipment outside the ball valve body 3 is used for maintaining the pressure of the second hydraulic working cavity G, the oil pressure change in the second hydraulic working cavity G is monitored at any time, and the pressure of the sealing element 6 on the floating valve seat 7 and the pressure on the ball valve clack 4 is accurately controlled. Other specific structures and functions are the same as in example 1.
Examples
As shown in fig. 4, when the hydraulic control floating valve seat reciprocating mechanism for the valve is used for a ball valve, the driving ends of the two floating valve seats 7 are respectively provided with a section of outer edges which are respectively in clearance fit with the inner holes of the end covers on the left ball valve end cover 1 and the right ball valve end cover 8, a sealing ring 14 is arranged between the clearance fit gaps, a second hydraulic working cavity G is separated from a valve pipeline 16, and a first hydraulic working cavity B is communicated with hydraulic control equipment outside the ball valve body 3 through a first fluid channel E correspondingly arranged on the ball valve body 3; the second hydraulic working chamber G is communicated with the outlet of the filtering device outside the ball valve body 3 via the second fluid channel F correspondingly arranged on the ball valve body 3, the inlet of the filtering device is communicated with the third fluid channel C arranged on the right ball valve end cover 8, that is, after suspended particles in the fluid in the valve pipeline are filtered by the filtering device, the floating valve seat 7 is pushed to move towards the ball valve clack 4 by utilizing the fluid pressure in the valve pipeline, and after moving in place, the pressure maintaining of the second hydraulic working chamber G is continued. Other specific structures and functions are the same as in example 1.
Examples
As shown in fig. 5, a hydraulic control float valve seat reciprocating structure for a valve, when used in a ball valve,
the floating valve seat 7 is arranged on one side of the valve clack 4, namely the inlet side of the fluid in the valve pipeline, compared with the structure provided with two floating valve seats, the valve cavity A is not a closed space, and can not prevent sediment from entering, but the manufacturing cost of the valve is lower. Other specific structures and functions are the same as in example 1.
Similarly, in embodiments 2, 3 and 4, one floating valve seat 7 may be disposed on one side of the ball valve clack 4, which is the inlet side of the fluid in the valve pipeline, and compared with the structures of embodiments 2, 3 and 4 in which two floating valve seats 7 are disposed, the manufacturing cost of the valve is lower although the valve cavity a is not a closed space, and the entrance of sediment cannot be prevented. Other specific structures and functions are the same as those of examples 2, 3 and 4.
Examples
As shown in fig. 6, a hydraulic control floating valve seat reciprocating structure for a valve is used for a gate valve, and comprises a left gate valve end cover 12, a right gate valve end cover 13, a gate valve body 9, a gate valve clack 10 and a gate valve rod 11, wherein the gate valve clack 10 is arranged in an inner cavity of the gate valve body 9, one ends of the left gate valve end cover 12 and the right gate valve end cover 13 are connected with the gate valve body 9 through a closing bolt, the other ends are provided with a closing hole and a sealing end face which are connected with a pipeline flange, and the gate valve clack 10 is connected with a valve clack driving mechanism outside the gate valve body 9 through the gate valve rod 11; the two floating valve seats 7 are arranged on the gate valve body 9, two floating valve seats 7 are correspondingly arranged on two sides of the gate valve clack 10, the floating valve seats 7 are of a stepped cylinder structure with a variable diameter coaxially, one end of each floating valve seat 7 is a sealing end, a sealing piece 6 is fixedly arranged on the end face of each sealing end, the sealing piece 6 corresponds to the gate valve clack 10, the other end of each floating valve seat 7 is a driving end, a reset spring 2 is arranged on the end face of each driving end, in addition, a section of outer edge of each driving end of the two floating valve seats 7 is in clearance fit with end cover inner holes of the left gate valve end cover 12 and the right gate valve end cover 13 respectively, a clearance fit gap is used as a fluid channel, the second hydraulic working cavity G is communicated with a valve pipeline, the floating valve seat 7 is pushed to move towards the gate valve clack 10 by utilizing fluid pressure in the valve pipeline, and particles in fluid are blocked from entering the second hydraulic working cavity G by utilizing the characteristic that the clearance fit gap is small; the first hydraulic working chamber B communicates with a hydraulic control device outside the gate valve body 9 via a first fluid passage E provided in the gate valve body 9, and the floating valve seat 7 is pushed to move in a direction away from the gate valve flap 10 by the fluid pressure of the hydraulic control device.
The floating valve seats 7 arranged at two sides of the valve clack 10 are driven by hydraulic force to move synchronously, and the moving directions are opposite. I.e. two floating valve seats 7, or move towards each other in synchronism; or synchronously move back and forth.
During the non-opening and closing action of the valve, on one hand, the sealing element 6 on the floating valve seat 7 is always pressed on the sealing surface of the valve clack 10 by the fluid pressure in the valve pipeline by means of the difference of the areas of the pressed end surfaces on the floating valve seat 7, and the pressure meets the sealing requirement of the valve. On the other hand, the floating valve seats 7 at the two sides of the valve clack 10 form a closed space with the valve cavity A, so that easy sediment such as silt and ore pulp in pipeline fluid can be prevented from entering the valve cavity A, and the failure that the valve cavity A is blocked by the sediment is avoided.
When the valve is opened and closed, the movement of the valve clack 10 and the floating valve seat 7 is alternately performed, and the method comprises the following steps: in a first step, the float valve seat 7 is moved away from the gate valve flap 10 until the seal 6 on the float valve seat 7 and the gate valve flap 10 do not contact each other. In a second step, the gate valve flap 10 is moved to a valve open (or closed) position. And thirdly, the floating valve seat 7 is moved back until the sealing piece 6 on the floating valve seat 7 is tightly pressed on the sealing surface of the valve clack 10 of the gate valve, and the pressing state meeting the sealing requirement is kept. The purpose of the steps is as follows: when the valve clack 10 moves, the sealing element 6 on the floating valve seat 7 cannot be worn or cut by the surface and the edge of the valve clack 10, the moving resistance of the valve clack 10 is reduced, the service life of the valve can be prolonged, and the energy consumption during opening and closing of the valve can be reduced. After the opening and closing actions are completed, the hydraulic control equipment outside the gate valve body 9 can be removed from the site at any time, and the hydraulic control equipment can be simply and conveniently used, so that convenience conditions are provided for field operation.
Examples
As shown in fig. 7, in a structure for reciprocating a hydraulic control floating valve seat of a valve, when the hydraulic control floating valve seat is used for a gate valve, a fourth fluid channel D is arranged on a driving end of the floating valve seat 7, a second hydraulic working cavity G is communicated with a valve pipeline, and the fourth fluid channel D is arranged on the top of the valve pipeline so as to prevent easy-to-precipitate particles in fluid from entering the second hydraulic working cavity G. The fourth fluid channel D is provided to enlarge the cross-sectional area of the fluid inlet and outlet working chambers G in the valve pipe. Similarly, the fluid passage D may be provided in the left gate valve cover 12 and the right gate valve cover 13 corresponding to the hydraulic working chamber G. Other specific structures and functions are the same as in example 6.
Examples
As shown in fig. 8, in a reciprocating structure of a hydraulic control floating valve seat for a valve, when the structure is used for a gate valve, the driving ends of two floating valve seats 7 are respectively provided with a section of outer edges which are respectively in clearance fit with inner holes of end covers on a left gate valve end cover 12 and a right gate valve end cover 13, a sealing ring 14 is arranged between clearance fit gaps to separate a second hydraulic working cavity G from a valve pipeline 16, a first hydraulic working cavity B and a second hydraulic working cavity G are respectively communicated with a hydraulic control device outside the gate valve body 9 through two corresponding first fluid channels E and second fluid channels F arranged on the end covers 13, and the reciprocating movement of the floating valve seats 7 is driven by the hydraulic control device outside the gate valve body 9; and during the non-opening and closing period of the valve, the hydraulic control equipment outside the gate valve body 9 is used for maintaining the pressure of the second hydraulic working cavity G, monitoring the oil pressure change in the second hydraulic working cavity G at any time, and accurately controlling the pressure of the sealing element 6 on the floating valve seat 7 and the pressure of the sealing element on the gate valve clack 10. Other specific structures and functions are the same as in example 6.
Examples
As shown in fig. 9, in a reciprocating structure of a hydraulic control floating valve seat for a valve, when the hydraulic control floating valve seat is used for a gate valve, a section of outer edge is arranged on the driving end of each floating valve seat 7 and is respectively in clearance fit with inner holes of end covers on a left gate valve end cover 12 and a right gate valve end cover 13, a sealing ring 14 is arranged between clearance fit gaps to separate a second hydraulic working cavity G from a valve pipeline, and a first hydraulic working cavity B is communicated with hydraulic control equipment outside the gate valve body 9 through a first fluid channel E correspondingly arranged on the gate valve body 9; the second hydraulic working chamber G communicates with the outlet of the filter device outside the gate valve body 9 via the second fluid channel F correspondingly provided on the gate valve end cap 13, the inlet of the filter device communicates with the third fluid channel C provided on the right gate valve end cap 13, i.e. after filtering suspended particles in the fluid in the valve pipe, the floating valve seat 7 is pushed to move towards the gate valve flap 10 by using the fluid pressure, and after moving in place, the pressure maintaining for the second hydraulic working chamber G is continued. Other specific structures and functions are the same as in example 6.
Examples
As shown in fig. 10, in a structure of reciprocating a hydraulic control floating valve seat for a valve, when the hydraulic control floating valve seat is used for a gate valve, one floating valve seat 7 is arranged on one side of a valve clack 10 of the gate valve, the side is the inlet side of fluid in a valve pipeline, and compared with a structure provided with two floating valve seats, although an inner cavity a of the valve is not a closed space, sediment cannot be prevented from entering, but the manufacturing cost of the valve is lower. Other specific structures and functions are the same as in example 6.
Similarly, in embodiments 7, 8 and 9, one floating valve seat 7 may be disposed on one side of the valve clack 10, which is the inlet side of the fluid in the valve pipeline, and compared with the structures of embodiments 7, 8 and 9 in which two floating valve seats 7 are disposed, the manufacturing cost of the valve is lower although the valve cavity a is not a closed space, and the entrance of sediment cannot be prevented. Other specific structures and functions are the same as those of examples 7, 8 and 9.
The installation mode, the connection mode or the setting mode of all the components are common mechanical connection modes, and the specific structure, the model, the parameters and the coefficient indexes of all the components are all self-contained technologies, so long as the beneficial effects can be achieved, the implementation can be carried out, and therefore the description is omitted.
For convenience of description, the terms "left, right, inner, outer, upper, lower, and used in the claims, are used in a manner consistent with the left, right, inner, outer, upper, lower, and direction of the accompanying drawings, but do not limit the structure of the utility model, and the terms" comprise "," include "," comprise ", and are intended to cover a non-exclusive inclusion, including other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above detailed description of the present utility model is merely for illustrating the present utility model and is not limited to the technical solutions described in the embodiments of the present utility model, and it should be understood by those skilled in the art that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.
Claims (9)
1. A hydraulic control floating valve seat reciprocating movement mechanism for a valve comprises a valve body, a valve clack and an end cover, wherein the valve clack is arranged in an inner cavity of the valve body and is connected with a valve clack driving mechanism at the outer side of the valve body; the valve is characterized in that a floating valve seat is arranged on the valve body, one end of the floating valve seat is a sealing end, the sealing end is arranged corresponding to the valve clack, and a sealing element is fixedly arranged on the end face of the sealing end; the other end of the floating valve seat is a driving end, a reset spring is arranged on the end face of the driving end, two hydraulic working cavities are respectively formed by the end face of the floating valve seat and the end faces of the valve body and the end cover, a fluid channel is arranged on the valve body, the end cover or the floating valve seat, the fluid channel corresponds to the two hydraulic working cavities respectively, and the hydraulic working cavities push the floating valve seat to do discontinuous reciprocating movement along the axial direction of the valve pipeline by utilizing the fluid pressure introduced by the fluid channel.
2. The hydraulic control floating valve seat reciprocating mechanism for a valve according to claim 1, wherein the valve is a ball valve and a gate valve, the valve clack of the ball valve is a ball valve, the valve clack of the gate valve is a gate plate, the valve clack of the ball valve is connected with a valve clack driving mechanism outside the valve body through a ball valve transmission shaft, and the valve clack of the gate valve is connected with a valve clack driving mechanism outside the valve body through a gate valve rod.
3. The reciprocating mechanism of a pilot operated float valve seat for a valve of claim 1, wherein said float valve seat is of a stepped cylindrical configuration with a diameter variation coaxially.
4. The reciprocating mechanism of a hydraulic control floating valve seat for a valve according to claim 1, wherein the two hydraulic working chambers comprise a first hydraulic working chamber and a second hydraulic working chamber, the first hydraulic working chamber is formed by surrounding a stepped end face of the floating valve seat on one side close to a sealing end with a stepped end face on the valve body, the first hydraulic working chamber is communicated with a hydraulic control device outside the valve body through a first fluid channel arranged on the valve body, and the first hydraulic working chamber pushes the floating valve seat to move in a direction away from the valve clack by utilizing the fluid pressure of the hydraulic control device; the second hydraulic working cavity is formed by adopting clearance fit between one section of outer edge of the tail part of the driving end of the floating valve seat and a pipe hole on the end cover.
5. The reciprocating mechanism of a pilot operated floating valve seat for a valve of claim 4, wherein a sealing ring is arranged between the clearance fit mating surfaces of the second hydraulic working chamber, and the sealing ring separates a space surrounded by the end face of the driving end of the floating valve seat, the valve body and the cover end from a valve pipeline to form a closed second hydraulic working chamber; the second hydraulic working cavity is communicated with hydraulic control equipment outside the valve body through a second fluid channel arranged on the valve body or the end cover, and the second hydraulic working cavity pushes the floating valve seat to move towards the valve clack by utilizing the fluid pressure of the hydraulic control equipment.
6. The reciprocating mechanism of a pilot operated floating valve seat for a valve of claim 4, wherein a sealing ring is arranged between the clearance fit mating surfaces of the second hydraulic working chamber, and the sealing ring separates a space surrounded by the end face of the driving end of the floating valve seat, the valve body and the cover end from a valve pipeline to form a closed second hydraulic working chamber; the second hydraulic working chamber is communicated with an outlet of a filtering device outside the valve body through a second fluid channel arranged on the valve body or the end cover, and an inlet of the filtering device is communicated with a valve pipeline through a third fluid channel arranged on the end cover.
7. The mechanism of claim 4, wherein the second hydraulic working chamber uses the gap of the clearance fit as a fluid channel to communicate the second hydraulic working chamber with the valve pipeline, and the second hydraulic working chamber uses the fluid pressure in the valve pipeline to push the floating valve seat to move towards the valve clack; simultaneously, the gap matched with the gap is utilized to prevent larger particles in the fluid from entering the second hydraulic working cavity.
8. The valve-used hydraulic-control floating valve seat reciprocating mechanism according to claim 7, wherein a fourth fluid passage is arranged on the floating valve seat or the end cover, and the fourth fluid passage communicates the second hydraulic working chamber with the valve pipeline; the fourth fluid channel is arranged at the top of the valve pipeline.
9. The reciprocating mechanism of a pilot operated float valve seat for a valve of claim 1, wherein one or two float valve seats are provided, and when one float valve seat is provided, a single float valve seat is provided on one side of the valve clack, which is the inlet side of the fluid in the valve pipeline, and when two float valve seats are provided, two float valve seats are correspondingly provided on two sides of the valve clack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320205852.9U CN219975429U (en) | 2023-02-14 | 2023-02-14 | Hydraulic control floating valve seat reciprocating movement mechanism for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320205852.9U CN219975429U (en) | 2023-02-14 | 2023-02-14 | Hydraulic control floating valve seat reciprocating movement mechanism for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219975429U true CN219975429U (en) | 2023-11-07 |
Family
ID=88590716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320205852.9U Active CN219975429U (en) | 2023-02-14 | 2023-02-14 | Hydraulic control floating valve seat reciprocating movement mechanism for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219975429U (en) |
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2023
- 2023-02-14 CN CN202320205852.9U patent/CN219975429U/en active Active
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