CN214350505U - High-pressure check valve seat replacement assembly device - Google Patents
High-pressure check valve seat replacement assembly device Download PDFInfo
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- CN214350505U CN214350505U CN202022940521.9U CN202022940521U CN214350505U CN 214350505 U CN214350505 U CN 214350505U CN 202022940521 U CN202022940521 U CN 202022940521U CN 214350505 U CN214350505 U CN 214350505U
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- pressure check
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Abstract
The utility model relates to a high-pressure check valve seat replacement assembly device, which comprises a press ring abutted against a valve seat ring, a supporting seat arranged on one side opposite to the valve seat ring, and an adjusting screw rod assembly connected with the opposite side of the supporting seat and the press ring and used for extruding the press ring to limit and support the valve seat ring; the adjusting screw assembly comprises a positive screw, a negative screw and an internal thread sleeve; the opposite ends of the positive screw and the negative screw are arranged in the internal thread sleeve, the opposite ends of the positive screw and the negative screw are respectively abutted against the supporting seat and the pressing ring, and the internal thread sleeve rotates to drive the positive screw and the negative screw to stretch. The novel valve seat assembly fixing device can provide a reliable novel valve seat assembly fixing function for valve seat online replacement work, can ensure that the assembly precision of the novel valve seat assembly meets the maintenance standard, further improves the efficiency and reduces the working dose of field personnel.
Description
Technical Field
The utility model relates to a nuclear power technical field especially relates to a check valve disk seat is changed to group and is assembled device to high putting.
Background
The valve is a control part in a fluid conveying system, has the functions of stopping (closing), adjusting, guiding, preventing counter flow, stabilizing pressure, shunting, overflowing and relieving pressure and the like, and is widely applied to nuclear power plants. The primary loop large-caliber gate valve and the check valve belong to a nuclear first-stage valve, and the valves have high radioactivity due to activation, radioactive substance deposition and the like, and are collectively called as high-level discharge valves. When the fluid has radioactivity, a high-pressure valve (a nuclear-grade valve) needs to be used for replacing a common valve so as to improve the safety level (for example, the high-pressure valve has the characteristics of good radiation blocking effect, longer rated service life and the like compared with the common valve).
As shown in fig. 1 to 5, the high pressure relief valve 10 generally includes a valve body 100, a valve seat ring 14, a guide rail 16, and a weld 18, where the valve body 100 includes a horizontal tube 110 and a vertical tube 120 located in the middle of the horizontal tube 110 and communicated with the horizontal tube 110, a central axis 104 of the vertical tube 120 is perpendicular to a central axis 102 of the horizontal tube 110, the vertical tube 120 and an end surface 122 of an open end of the vertical tube 120 are provided with a boss 124, the end surface 122 of the open end of the vertical tube 120 is provided with a plurality of first mounting holes 126, and the plurality of first mounting holes 126 are arranged at intervals around the boss 124. Cross tube 110 includes two branch tubes 112 located on either side of a vertical tube 120. The number of valve seat rings 14 is two, and the two valve seat rings 14 correspond to the two branch pipes 112, respectively. Valve seat ring 14 is located in branch pipe 112, valve seat ring 14 includes sealing surface 14a, sealing surface 14a is used for fitting with the valve clack (not shown) inserted in standpipe 120, forming a sealing system, and the closing function of high-pressure discharge valve 10 is realized, and the end of valve seat ring 14 far away from sealing surface 14a is connected with branch pipe 112 through welding seam 18 in a sealing manner. Wherein the valve flap slides in and out of the standpipe 120 along the guide rail 16. The guide rails 16 are disposed on the inner wall of the vertical tube 120 and extend into the horizontal tube 110 along the vertical direction, the number of the guide rails 16 is two, and the two guide rails 16 are disposed opposite to each other at intervals and are longitudinally arranged at intervals.
When a serious defect occurs in the sealing surface 14a of the valve seat ring 14, and the sealing surface 14a is attached to the valve flap inserted into the vertical pipe 120, a good sealing system cannot be formed, the maintenance means usually adopted is to replace the whole high-level valve 10, but the high-level valve 10 of the nuclear power plant is high in manufacturing cost, and the irradiation dose of personnel in the replacement process is high, namely, the problem of high cost and insecurity exists in replacing the whole high-level valve 10. To solve the above problem, those skilled in the art have conceived of replacing the entire high relief valve 10 by replacing the damaged valve seat ring 14, and prior to replacing the valve seat ring 14, it is necessary to cut the weld 18 using a weld cutting apparatus to separate the valve seat ring 14 from the branch pipe 112, thereby removing the valve seat ring 14.
When the new valve seat is used for timing, the valve seat needs to be fixed, deviation and falling are prevented, and necessary preconditions are provided for spot welding fixation.
The valve seat ring 14 is heavy, if no proper group fixes the new valve seat to the fixing device, the valve space is limited in field implementation, only one to two people can manually press and fix the new valve seat, the implementation is difficult, sliding deviation is easy to generate, the hidden quality trouble exists, and the irradiated dose of personnel is increased.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a high check valve disk seat is changed group and is assembled the device.
The utility model provides a technical scheme that its technical problem adopted is: the replacement assembly device for the valve seat of the high-pressure check valve comprises a pressing ring abutted to the valve seat ring, a supporting seat arranged on one side opposite to the valve seat ring, and an adjusting screw assembly connected with the supporting seat and the opposite side face of the pressing ring and used for extruding the pressing ring to limit and support the valve seat ring;
the adjusting screw assembly comprises a positive screw, a negative screw and an internal thread sleeve;
the opposite ends of the positive screw and the reverse screw are arranged in the internal thread sleeve, the opposite ends of the positive screw and the reverse screw are respectively abutted against the supporting seat and the pressing ring, and the internal thread sleeve rotates to drive the positive screw and the reverse screw to stretch.
Preferably, one side of the supporting seat, which faces the compression ring, is provided with a plurality of first positioning grooves which are concave inwards, and one end of the positive screw, which is far away from the negative screw, is installed in the first positioning grooves;
the pressing ring faces a plurality of second positioning grooves which are concave inwards and are arranged on one side of the supporting seat, and one end of the reverse screw rod, which is far away from the positive screw rod, is arranged in the second positioning grooves.
Preferably, the first positioning groove and the second positioning groove are circular groove structures.
Preferably, the first positioning groove and the second positioning groove are both provided with supporting cushion blocks.
Preferably, the compression ring comprises an annular segment and a connecting segment connecting the inner side faces of the annular segment;
the second positioning grooves are symmetrically arranged on the annular section and/or the connecting section.
Preferably, the edge of the pressing ring facing the sealing surface side of the valve seat ring is provided with a step.
Preferably, the clamping ring is provided with an adhesive piece on one side of the sealing surface of the valve seat ring.
Preferably, the supporting seat is of a truncated cone structure.
Preferably, the supporting seat and the pressing ring are made of metal pieces.
Implement the utility model discloses following beneficial effect has: this high-pressure check valve disk seat is changed and is organized device can provide reliable new disk seat group for disk seat online replacement work and organize fixed function, can ensure that new disk seat group to the precision satisfies the maintenance standard, further raises the efficiency simultaneously, reduces field force worker work dose.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic perspective view of a high relief valve;
FIG. 2 is a front view of the high relief valve;
FIG. 3 is a top plan view of the high relief valve of FIG. 2;
FIG. 4 is a cross-sectional view taken along line AA in FIG. 2;
FIG. 5 is a cross-sectional view taken along line BB of FIG. 2;
FIG. 6 is a schematic view of the assembly device for replacing the valve seat of the high-pressure check valve according to the present invention;
figure 7 is a front view of the compression ring of the present invention;
fig. 8 is a sectional view of the pressure ring of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 6, be the utility model discloses a high check valve disk seat replacement group is to device, including the clamping ring 1 of butt disk seat ring, locate the bearing 2 of the relative one side of disk seat ring to and connect bearing 2 and clamping ring 1 opposite flank to be used for extrudeing this clamping ring 1 and carry out the adjusting screw subassembly of spacing support in order to disk seat ring 14, this adjusting screw subassembly can set up the multiunit according to the demand.
Preferably, the adjusting screw assembly comprises a positive screw 3, a negative screw 4 and an internal thread sleeve 5, wherein one end of the positive screw 3 opposite to the negative screw 4 is arranged in the internal thread sleeve 5, one end of the positive screw 3 opposite to the negative screw 4 is respectively abutted to the supporting seat 2 and the pressing ring 1, and the internal thread sleeve 5 rotates to drive the positive screw 3 and the negative screw 4 to stretch.
Preferably, the supporting seat 2 is a circular truncated cone structure, an inclined plane of the supporting seat is abutted to the pipeline, the specific position is the position of an original valve seat ring, the supporting seat plays a role in positioning and supporting, one side of the supporting seat 2, facing the compression ring 1, is provided with a plurality of first positioning grooves 21 which are concave inwards, and one end, far away from the reverse screw rod 4, of the positive screw rod 3 is installed in the first positioning grooves 21;
one side of the compression ring 1 facing the supporting seat is provided with a plurality of second positioning grooves 13 which are concave inwards, and one end of the reverse screw rod 4 far away from the positive screw rod 3 is arranged in the second positioning grooves 13. Of course, the installation positions of the positive screw rod 3 and the negative screw rod 4 can be interchanged.
The first positioning groove 21 and the second positioning groove 13 are circular grooves, and the inner diameter and the groove depth thereof can be selected according to the requirement, which is not limited herein.
Further, all be equipped with the lip block in first constant head tank 21 and the second constant head tank 13, set up lip block 6 in the first constant head tank 21, set up lip block 7 in the second constant head tank 13, this lip block is the cushion that adopts polytetrafluoroethylene to make, and it can wrap up the tip of positive screw rod 3 and negative screw rod 4, adopts the lip block mainly to play the cushioning effect, conveniently strikes the position of fine setting valve seat ring 14.
With reference to fig. 7 and 8, the pressing ring 1 includes an annular segment 11 and a connecting segment 12 connecting opposite inner sides of the annular segment 11, a plurality of second positioning grooves 13 are symmetrically disposed on the annular segment 11 and/or the connecting segment 12, where the number of the second positioning grooves 13 is five, four are symmetrically disposed on the annular segment 11, one is disposed in the middle of the connecting segment 12, and the first positioning groove 21 of the supporting seat 2 is disposed corresponding to the second positioning groove 13.
Since the sealing surface of valve seat ring 14 is of an inclined configuration, and accordingly, the cross section of pressure ring 1 is of a substantially trapezoidal configuration, further, the edge of pressure ring 1 facing the sealing surface of valve seat ring 14 is provided with step 111, and step 111 abuts the sealing surface of valve seat ring 14.
Preferably, the pressing ring 1 is provided with an adhesive member on the side of the sealing surface of the valve seat ring, and the adhesive member may be a halogen-free adhesive tape to protect the sealing surface of the valve seat ring 14 from being damaged by extrusion, impact and abrasion, or may be other members, which are not specifically limited herein.
In this embodiment, the supporting seat 2 and the pressure ring 1 are made of metal, and may be made of aluminum alloy, or may be made of red copper, and the like, and may be selectively provided according to the requirement, which is not specifically limited herein.
In this embodiment, a supporting seat 2 is placed on the opposite side of a seat ring 14 on a valve body 100, an adjusting screw assembly composed of a supporting cushion block 6, a positive screw 3, an internal thread sleeve 5 and a negative screw 4 is inserted into a first positioning groove 21 on the supporting seat 2, the internal thread sleeve 5 is rotated to shorten the whole adjusting screw assembly, a sufficient space is provided for installing a pressure ring 1, a new valve seat ring 14 is placed and adjusted to a proper installation position, and a proper amount of halogen-free adhesive tape is pasted on a side plane of the pressure ring 1 to be in contact with a sealing surface of the valve seat ring 14 to protect the sealing surface of the valve seat ring 14 from being damaged by extrusion, collision and abrasion.
The pressing ring 1 is placed, the back face of the pressing ring is embedded on the valve seat ring 14, the internal thread sleeve 5 is rotated to enable each adjusting screw rod assembly to extend gradually, the reverse-thread screw rods 4 are matched with the supporting cushion blocks 7 and are arranged in the second positioning grooves 13 of the pressing ring 1, the length of each adjusting screw rod assembly is properly and uniformly adjusted to enable the adjusting screw rods to apply certain pressure to the valve seat ring 14 through the pressing ring 1, and then after the position of the valve seat ring 14 is fine adjusted to be qualified by using tools such as a rubber hammer, the spot welding work can be started by screwing the internal thread sleeve 5.
When the device needs to be dismantled after spot welding is completed, the compression ring 1 and the supporting seat 2 can be smoothly taken out only by unscrewing the internal thread sleeve 5 one by one and withdrawing the adjusting screw assembly consisting of the supporting cushion block, the positive screw rod 3, the internal thread sleeve 5 and the negative screw rod 4.
If the assembly device is replaced by the high-pressure check valve seat without adopting a high-pressure check valve seat replacement assembly device, the valve seat ring 14 is manually pressed to be fixed, the implementation is difficult, the deviation such as slipping is easy to generate, the quality hidden trouble exists, meanwhile, the irradiated dose of personnel is increased, and the accuracy requirement of automatic welding equipment and valve maintenance standards on assembly is difficult to meet.
By adopting the high-pressure check valve seat replacing and assembling device, a reliable new valve seat assembling and fixing function can be provided for the online replacement of the valve seat, the assembly precision of the new valve seat can be ensured to meet the maintenance standard, the efficiency is further improved, and the working dosage of field personnel is reduced.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (9)
1. The high-pressure check valve seat replacement assembly device is characterized by comprising a pressing ring (1) abutted against a valve seat ring, a supporting seat (2) arranged on one side opposite to the valve seat ring, and an adjusting screw assembly which is used for connecting the supporting seat (2) and the opposite side surface of the pressing ring (1) and is used for extruding the pressing ring (1) so as to limit and support the valve seat ring;
the adjusting screw assembly comprises a positive screw (3), a negative screw (4) and an internal thread sleeve (5);
the positive screw (3) and the opposite end of the reverse screw (4) are arranged in the internal thread sleeve (5), the opposite ends of the positive screw (3) and the reverse screw (4) are respectively abutted against the supporting seat (2) and the pressing ring (1), and the internal thread sleeve (5) rotates to drive the positive screw (3) and the reverse screw (4) to stretch.
2. The high-pressure check valve seat replacement assembly device according to claim 1, wherein a plurality of first positioning grooves (21) which are concave are formed in one side, facing the compression ring (1), of the supporting seat (2), and one end, away from the reverse-thread screw (4), of the positive-thread screw (3) is installed in the first positioning grooves (21);
pressing ring (1) towards bearing (2) one side is equipped with several second constant head tank (13) of indent, negative silk screw rod (4) are kept away from positive silk screw rod (3) one end install in second constant head tank (13).
3. The high-pressure check valve seat replacement pairing device as recited in claim 2, wherein the first positioning groove (21) and the second positioning groove (13) are circular groove structures.
4. The high-pressure check valve seat replacement pairing device as recited in claim 2, wherein supporting cushion blocks are arranged in the first positioning groove (21) and the second positioning groove (13).
5. The high-pressure check valve seat replacement assembly device as recited in claim 2, wherein the compression ring (1) comprises an annular section (11) and a connecting section (12) connecting opposite inner side surfaces of the annular section (11);
the second positioning grooves (13) are symmetrically arranged on the annular section (11) and/or the connecting section (12).
6. The high-pressure check valve seat replacement pairing device is characterized in that the edge of the compression ring (1) facing the sealing surface of the valve seat ring is provided with a step (111).
7. The high-pressure check valve seat replacement assembly device as claimed in claim 1, wherein an adhesive member is arranged on one side of the compression ring (1) which is attached to the sealing surface of the valve seat ring.
8. The high-pressure check valve seat replacement assembly device as recited in claim 1, wherein the support base (2) is of a truncated cone structure.
9. The high-pressure check valve seat replacement assembly device as claimed in claim 1, wherein the supporting seat (2) and the pressing ring (1) are made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022940521.9U CN214350505U (en) | 2020-12-10 | 2020-12-10 | High-pressure check valve seat replacement assembly device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022940521.9U CN214350505U (en) | 2020-12-10 | 2020-12-10 | High-pressure check valve seat replacement assembly device |
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| Publication Number | Publication Date |
|---|---|
| CN214350505U true CN214350505U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022940521.9U Active CN214350505U (en) | 2020-12-10 | 2020-12-10 | High-pressure check valve seat replacement assembly device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953733A (en) * | 2021-11-30 | 2022-01-21 | 建湖县昊辉电力石化机械有限公司 | Oil pipe head welding device for petroleum transportation and machining method thereof |
-
2020
- 2020-12-10 CN CN202022940521.9U patent/CN214350505U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953733A (en) * | 2021-11-30 | 2022-01-21 | 建湖县昊辉电力石化机械有限公司 | Oil pipe head welding device for petroleum transportation and machining method thereof |
| CN113953733B (en) * | 2021-11-30 | 2023-09-05 | 江苏苏博石化机械有限公司 | Oil pipe head welding device for petroleum transportation and processing method thereof |
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