CN220646848U - Upper valve seat for high-temperature high-pressure ball valve and ball valve - Google Patents
Upper valve seat for high-temperature high-pressure ball valve and ball valve Download PDFInfo
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- CN220646848U CN220646848U CN202322236387.8U CN202322236387U CN220646848U CN 220646848 U CN220646848 U CN 220646848U CN 202322236387 U CN202322236387 U CN 202322236387U CN 220646848 U CN220646848 U CN 220646848U
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- valve seat
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- upper valve
- pressure ball
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- 238000007789 sealing Methods 0.000 claims abstract description 66
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 7
- 239000011241 protective layer Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
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Abstract
The utility model discloses an upper valve seat for a high-temperature high-pressure ball valve, and belongs to the technical field of ball valves. The utility model provides an upper valve seat for a high-temperature high-pressure ball valve, which is in contact with a valve ball, wherein a metal sealing ring is fixedly arranged at one end of the upper valve seat, which is far away from the valve ball. The high-temperature high-pressure ball valve comprises an upper valve seat, a valve ball, a lower valve seat, a valve body and a valve end cover, wherein the upper valve seat, the valve ball and the lower valve seat are sequentially connected with an inner space formed by the valve body and the valve end cover. The upper valve seat and the ball valve provided by the utility model have the advantages of small volume, compact structure, small occupied installation space, reliable sealing and difficult leakage, thereby playing a good role in isolating media.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to an upper valve seat for a high-temperature high-pressure ball valve and the ball valve.
Background
In the fields of nuclear power plants, crude oil extraction, mining industry, large-scale thermal power plants and the like, the ball valve is limited in installation space except for adapting to the working environment with extremely high temperature and high pressure. Therefore, the control valve has higher requirements, not only can realize reliable sealing under the working environment of high temperature and high pressure, but also needs smaller appearance size, small installation space, more compact structure and smaller installation space occupation. The ball valve flexibly controls the confluence, the diversion and the flow direction switching of the medium through the spherical valve core. Because the ball valve has good sealing performance (the spherical sealing form can realize complete sealing), the ball valve has the advantages of simple structure and the like, and the ball valve is widely applied in various industrial fields.
At present, a manual high-temperature high-pressure ball valve is arranged below a pressure control valve arranged on a main steam pipeline of a large-scale boiler of a thermal power plant in China. The ball valve is mainly used for closing the ball valve under the condition that the pressure control valve leaks or cannot be closed, so that blowing damage of parts of the valve body caused by the leakage of the pressure control valve and loss of high-temperature and high-pressure steam are reduced. The manual high-temperature high-pressure ball valve plays an isolating role on the pressure control valve. However, due to the structural problem of the manual high-temperature high-pressure ball valve, the problems of internal leakage and external leakage are very easy to occur, and the manual high-temperature high-pressure ball valve cannot effectively isolate the pressure control valve; the upper valve seat of the existing ball valve has poor sealing effect and is easy to leak.
Disclosure of Invention
In view of the above-described deficiencies of the prior art, the present utility model aims to: the upper valve seat for the high-temperature high-pressure ball valve has the advantages of small volume, compact structure, small occupied installation space, reliable sealing and difficult leakage, thereby playing a role in well isolating media.
In order to achieve the above object, the present utility model provides the following technical solutions: an upper valve seat for a high-temperature high-pressure ball valve is in contact with a valve ball, and a metal sealing ring is fixedly arranged at one end of the upper valve seat away from the valve ball. The metal sealing ring arranged on the upper valve seat increases the sealing reliability, and the metal structure can bear the occasion of high temperature and high pressure, and simultaneously increases the service life of the ball valve.
And the surfaces, which are in contact with the flowing medium, of the valve end cover, the upper valve seat, the valve ball, the lower valve seat and the valve body are uniformly provided with protective layers. The protective layer is mainly composed of metal oxide, so that corrosion and oxidation of flowing media to the ball valve are reduced, and the service life of the ball valve is prolonged.
The metal sealing ring is a rigid metal sealing ring, and the valve end cover and the valve body are fixed through bolts. The valve end cover and the valve body are fixed through the bolts, the operation is simple, the quick adjustment can be realized, and the sealing effect is good.
The common structure for connecting and sealing a plurality of parts is eliminated, the rigid metal sealing ring is a metal angle ring, and the metal angle ring and the upper valve seat are of an integrated structure. The parts of the device are reduced through the integrated structure, the disassembly is convenient, the sealing effect is improved, the sealing effect among the parts is good, and the integrated sealing effect is not good.
A first sealing band is formed between one end of the metal sealing ring and the valve end cover, and a second sealing band is formed between the corresponding other end of the metal sealing ring and the valve body. Through the first sealing strip and the second sealing strip that set up, increased the sealed effect between valve end cover, the upper valve seat and the valve body.
When the valve end cover is required to be opened in the ball valve maintenance, the upper valve seat is possibly blocked in the internal channel of the valve body because of no stress point and cannot be taken out smoothly, so that the upper sealing surfaces and the lower sealing surfaces of the upper valve seat are protected, and the upper sealing surfaces and the lower sealing surfaces of the upper valve seat are prevented from being damaged during violent disassembly. Once the sealing surface is damaged, the maintenance is not easy. The upper valve seat is provided with a disassembly connecting structure. The upper valve seat is convenient to detach, and the upper sealing surface and the lower sealing surface of the upper valve seat are not damaged.
The dismounting connection structure is an internal thread arranged in the through hole and is used for being connected with a matched dismounting device.
For conveniently dismantling the upper valve seat, the dismantling connection structure is a plurality of blind holes arranged on the end face of the metal sealing ring, and internal threads are arranged in the blind holes and are used for being connected with a matched dismantling device. The blind holes are symmetrically distributed on the end face of the metal sealing ring.
The dismounting connection structure is a plurality of grooves arranged in the through hole and used for being connected with a matched dismounting device.
And an elastic component is arranged at the bottom of the lower valve seat. The elastic component is a belleville spring group. Space compensation is carried out in the channel through the elastic component, so that the ball valve can conveniently rotate in the valve body to isolate a medium.
The high-temperature high-pressure ball valve comprises the upper valve seat, a valve ball, a lower valve seat, a valve body and a valve end cover, wherein the upper valve seat, the valve ball and the lower valve seat are sequentially connected with an inner space formed by the valve body and the valve end cover.
Compared with the prior art, the utility model has at least the following beneficial effects: the upper valve seat, the valve ball and the lower valve seat in the internal channel of the valve body are sequentially and hermetically connected to form a sealed channel, and the sealing and the same-line sealing of flowing media are realized through the rotation of the valve ball; the reliability of the seal is improved by the metal sealing ring arranged on the upper valve seat, and zero leakage seal can be realized; the metal structure can bear the occasion of high temperature and high pressure, has increased the life of valve ball simultaneously. The upper valve seat for the high-temperature high-pressure ball valve has the characteristics of small volume, simple and compact structure, small occupied installation space and reliable sealing.
Drawings
In order to more clearly illustrate the technical solutions of specific embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic view of an upper valve seat structure for a high temperature high pressure ball valve of the present utility model;
FIG. 2 is a schematic cross-sectional view of the upper valve seat of FIG. 1;
FIG. 3 is a schematic cross-sectional view of another embodiment of an upper valve seat.
Reference numerals: the valve comprises a 1-valve end cover, a 101-bolt, a 2-valve body, a 3-upper valve seat, a 31-metal sealing ring, a 311-second sealing belt, a 312-first sealing belt, a 313-disassembly connecting structure, a 4-valve ball, a 5-lower valve seat, a 6-elastic component, a 7-ball valve inlet end, a 8-ball valve outlet end and a 9-valve rod connected with a manual rotating mechanism.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully, and it is apparent that the embodiments described are only some, but not all, of the embodiments of the present utility model. 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.
1-3, an embodiment of an upper valve seat for a high temperature high pressure ball valve according to the present utility model is used, in which it should be noted that, in order to describe a technical solution more specifically, the steps described in the present embodiment do not correspond exactly to the steps described in the summary of the utility model.
The utility model provides an upper valve seat and a ball valve for a high-temperature high-pressure ball valve, which comprise a valve end cover 1 and a valve body 2 which are fixed through bolts 101, wherein passages for medium to pass through are formed in the valve end cover 1 and the valve body 1, an upper valve seat 3, a valve ball 4 and a lower valve seat 5 are sequentially connected in the valve body 2, a metal sealing ring 31 is fixedly arranged at one end of the upper valve seat 3 far away from the valve ball 4, the metal sealing ring 31 is a rigid metal sealing ring, and the metal corner ring and the upper valve seat 3 are of an integrated structure and are used for sealing the valve ends, 1 and the valve body 2.
A first sealing band 312 is formed between one end of the metal sealing ring 31 and the valve cover 1, and a second sealing band 311 is formed between the corresponding other end of the metal sealing ring 31 and the valve body 2. By providing the first sealing band 312 and the second sealing band 311, the sealing effect between the valve cover 1 and the valve body 1 is increased.
The surfaces of the valve end cover 1, the upper valve seat 3, the valve ball 4, the lower valve seat 5 and the valve body 2, which are in contact with the medium flowing through, are uniformly provided with protective layers. The protective layer is mainly composed of metal oxide, specifically silicon oxide and yttrium oxide. The corrosion and oxidation of the ball valve by the flowing medium are reduced, so that the service life of the ball valve is prolonged.
When the valve end cover 1 needs to be opened during the overhaul of the ball valve, the upper valve seat 3 is possibly blocked in the internal channel of the valve body 2 because of no stress point and cannot be taken out smoothly; once the upper sealing surface and the lower sealing surface of the upper valve seat 3 are damaged, the maintenance is not easy. In order to avoid damage during violent disassembly. A disassembly connection structure 313 is arranged in the middle through hole of the upper valve seat 3, so that the upper valve seat 3 can be disassembled conveniently. In this embodiment, as shown in fig. 2, the dismounting connection 313 is an internal thread provided in the through hole for connection with a mating dismounting device. The dismounting device is provided with matched external threads, and can be matched with the internal threads of the through hole for use, so that the upper valve seat 3 is taken out of the through hole.
In other embodiments, the detachment connection structure 313 is a plurality of recesses disposed in the through-hole for connection with a mating detachment device. The dismounting device is provided with matched convex objects which can be inserted into the grooves to take out the upper valve seat from the through hole. As shown in fig. 3, the dismounting connection structure 313 may also be a plurality of blind holes arranged on the end surface of the metal sealing ring, and the blind holes are internally provided with internal threads for being connected with a matched dismounting device; preferably, a plurality of blind holes are symmetrically distributed on the end face of the metal sealing ring. The matched dismounting device can be uniformly stressed, the upper valve seat 3 is convenient to dismount, and the upper valve seat 3 cannot be damaged.
An elastic component 6 is arranged at the bottom of the lower valve seat 5. The elastic component 6 is a belleville spring set. The space compensation is carried out in the channel through the elastic component 6, so that the valve ball 4 can conveniently rotate in the valve body 2 to isolate the medium.
One side of the valve ball 4 is detachably connected with a valve rod 9 connected with a manual rotating mechanism, and the valve ball 4 is rotated through the valve rod 9 connected with the manual rotating mechanism, so that a ball valve channel in the embodiment is opened and closed.
The principle of the utility model is illustrated by this example: under the normal operation condition, the valve end cover and the valve seat are fixedly connected through bolts, a medium enters the channel of the valve body 2 through the inlet end 7 of the ball valve and sequentially passes through the lower valve seat 5, the valve ball 4, the upper valve seat 3, the valve end cover 1 and the internal channel of the outlet end 8 of the ball valve; when the medium needs to be isolated, the valve ball 4 is rotated by 90 degrees through the valve rod 9 connected with the manual rotation mechanism, the ball valve channel is closed, and the medium is isolated.
The above description of the embodiments is only intended to assist in understanding the method and core idea of the utility model. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present utility model without departing from the principles of the utility model, and such improvements and modifications fall within the scope of the appended claims.
Claims (10)
1. An upper valve seat for a high-temperature high-pressure ball valve is characterized in that: the upper valve seat is contacted with the valve ball, and one end of the upper valve seat, which is far away from the valve ball, is fixedly provided with a metal sealing ring.
2. The upper valve seat for a high temperature, high pressure ball valve of claim 1, wherein: the metal sealing ring is a rigid metal sealing ring, and the valve end cover and the valve body are fixed through bolts.
3. The upper valve seat for a high temperature high pressure ball valve according to claim 2, wherein: the rigid metal sealing ring is a metal angle ring, and the metal angle ring and the upper valve seat are of an integrated structure.
4. An upper valve seat for a high temperature high pressure ball valve according to any one of claims 1-3, wherein: a first sealing band is formed between one end of the metal sealing ring and the valve end cover, and a second sealing band is formed between the corresponding other end of the metal sealing ring and the valve body.
5. An upper valve seat for a high temperature high pressure ball valve according to any one of claims 1-3, wherein: the upper valve seat is provided with a disassembly connecting structure.
6. The upper valve seat for a high temperature, high pressure ball valve of claim 5, wherein: the dismounting connection structure is an internal thread arranged in the through hole and is used for being connected with a matched dismounting device.
7. The upper valve seat for a high temperature, high pressure ball valve of claim 5, wherein: the disassembly connecting structure is a plurality of blind holes arranged on the end face of the metal sealing ring, and internal threads are arranged in the blind holes and are used for being connected with a matched disassembly device.
8. The upper valve seat for a high temperature, high pressure ball valve of claim 7, wherein: the blind holes are symmetrically distributed on the end face of the metal sealing ring.
9. The upper valve seat for a high temperature, high pressure ball valve of claim 5, wherein: the dismounting connection structure is a plurality of grooves arranged in the through hole and used for being connected with a matched dismounting device.
10. The utility model provides a high temperature high pressure ball valve which characterized in that: an upper valve seat comprising any one of claims 1-9, further comprising a valve ball, a lower valve seat, a valve body, and a valve end cap, said upper valve seat, valve ball, and lower valve seat being connected in sequence in an interior space defined by said valve body and said valve end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322236387.8U CN220646848U (en) | 2023-08-21 | 2023-08-21 | Upper valve seat for high-temperature high-pressure ball valve and ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322236387.8U CN220646848U (en) | 2023-08-21 | 2023-08-21 | Upper valve seat for high-temperature high-pressure ball valve and ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220646848U true CN220646848U (en) | 2024-03-22 |
Family
ID=90269928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322236387.8U Active CN220646848U (en) | 2023-08-21 | 2023-08-21 | Upper valve seat for high-temperature high-pressure ball valve and ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220646848U (en) |
-
2023
- 2023-08-21 CN CN202322236387.8U patent/CN220646848U/en active Active
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