CN218194515U - Special centering adjustment tool for grinding valve seat of stop valve - Google Patents
Special centering adjustment tool for grinding valve seat of stop valve Download PDFInfo
- Publication number
- CN218194515U CN218194515U CN202221649609.8U CN202221649609U CN218194515U CN 218194515 U CN218194515 U CN 218194515U CN 202221649609 U CN202221649609 U CN 202221649609U CN 218194515 U CN218194515 U CN 218194515U
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- centering
- adjusting rod
- stop valve
- hole
- centering adjusting
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Abstract
The utility model belongs to the technical field of the maintenance of nuclear power plant, concretely relates to special centering adjustment tool is ground to stop valve disk seat. The utility model comprises a fixed block, a centering adjusting rod and a slide block, wherein the fixed block is a regular hexagon frame structure, and a through hole is respectively arranged at the central positions of three separated edges to ensure that a centering adjusting tool stably acts on a valve rod; one end of the centering adjusting rod is inserted into the through hole of the fixing block; the slide block is sleeved on the centering adjusting rod and is used for being connected with a flange bolt hole in the valve. The utility model discloses can improve the centering precision and the grinding efficiency that the stop valve disk seat ground.
Description
Technical Field
The utility model belongs to the technical field of the maintenance of nuclear power plant, concretely relates to special centering adjustment tool is ground to stop valve disk seat.
Background
The valve is a widely used mechanical device, mainly used as a control component for changing the channel section and the medium flow direction and controlling the flow of the conveying medium in a fluid conveying system. In the power plant normal operating, leak in the valve probably appears, can lead to soda a large amount of losses, makes generating set economic nature receive the influence, also probably causes harm to operation personnel, surrounding equipment, leaks in the long-term valve simultaneously and will make the valve life-span reduce, damages too fast, leads to unable the restoration, also can influence the economic benefits of power plant.
Whether the stop valve leaks inwards mainly takes the tightness of the valve clack and the valve seat as a judgment basis, and the best treatment method at present is to use a special grinding tool for grinding. However, in the use process of various types of grinding tools in the market, the sealing surface of the stop valve seat is easy to grind and is poorly centered, so that the grinding effect cannot reach the expected condition.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provides a special centering adjustment tool is ground to stop valve disk seat, can improve the centering precision and the grinding efficiency that stop valve disk seat ground.
The utility model adopts the technical proposal that:
a special centering adjustment tool for grinding a valve seat of a stop valve comprises a fixed block, a centering adjustment rod and a sliding block, wherein the fixed block is of a regular hexagonal frame structure, and through holes are formed in the central positions of three separated edges respectively to ensure that the centering adjustment tool acts on a valve rod stably; one end of the centering adjusting rod is inserted into the through hole of the fixing block; the slide block is sleeved on the centering adjusting rod and is used for being connected with a flange bolt hole in the valve.
The centering adjusting rod is a cylinder, one end of the centering adjusting rod is of a telescopic structure, and the top of the centering adjusting rod is provided with a U-shaped joint which is tightly attached to the valve rod.
The telescopic end of the centering adjusting rod is inserted into the through hole.
The adjusting device also comprises an adjusting nut which is connected through threads and sleeved on the centering adjusting rod, and the extension amount of the part, inserted into the through hole, of the centering adjusting rod is adjusted through the adjusting nut.
The adjusting nut is positioned outside the fixing block.
The slider is of a U-shaped structure, one end of the slider is provided with a through hole in the vertical direction, the slider is sleeved on the centering adjusting rod and is connected with the centering adjusting rod through threads, and the other end of the slider is provided with a through hole in the horizontal direction.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) The utility model provides a pair of special centering adjustment tool is ground to stop valve disk seat, its convenient operation, the flexible volume of adjusting lever after having placed the fixed block, then utilize the slider with instrument locking on well flange, need not to make the disk seat alone and grind the centering dish, very big improvement the centering precision and the efficiency that the stop valve disk seat ground.
(2) The utility model provides a pair of special centering adjustment tool is ground to stop valve disk seat utilizes adjusting nut and slider as the benchmark, according to the adjustment that stretches out and draws back of flange diameter size in the valve, is applicable to the stop valve grinding of multiple specification.
Drawings
Fig. 1 is a schematic structural view of a centering adjustment tool dedicated for grinding a valve seat of a stop valve provided by the present invention;
in the figure: 1-fixed block, 2-centering adjusting rod, 3-adjusting nut and 4-sliding block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the utility model provides a special centering adjustment tool for grinding a valve seat of a stop valve, which comprises a fixed block 1, a centering adjustment rod 2, an adjustment nut 3 and a slide block 4, wherein the fixed block 1 is of a regular hexagonal frame structure, and a through hole is respectively arranged at the central positions of three separated edges to ensure that the centering adjustment tool stably acts on a valve rod; the centering adjusting rod 2 is a cylinder, one end of the centering adjusting rod is of a telescopic structure, and the top of the centering adjusting rod is provided with a U-shaped joint which can be tightly attached to the valve rod. The telescopic end of the centering adjusting rod 2 is inserted into the through hole of the fixed block 1; the adjusting nut 3 is connected through threads and sleeved on the centering adjusting rod 2, and the elongation of the part, inserted into the through hole, of the centering adjusting rod 2 is adjusted through the adjusting nut 3; the slide block 4 is of a U-shaped structure, one end of the slide block is provided with a through hole in the vertical direction, the slide block is sleeved on the centering adjusting rod 2 and is connected with the centering adjusting rod through threads, and the other end of the slide block is provided with a through hole in the horizontal direction and is connected with a flange bolt hole in a valve.
The utility model discloses a theory of operation does:
1) One end of each of the 3 middle adjusting rods 2 penetrates through a threaded hole of the fixing block 1 and is screwed into a certain depth to be kept at a certain position, and the fixing block centering adjusting rod assembly is formed preliminarily;
2) Preparing a valve grinder, enabling a tool rod of the grinder to penetrate out of a centering adjusting rod assembly of a fixing block, and placing the assembly on a flange in a valve;
3) 3 adjusting nuts 3 are respectively arranged on the 3 centering adjusting rods 2, are not screwed down temporarily, and are locked after the accurate position is determined subsequently;
4) Respectively installing 3 sliding blocks 4 on the 3 centering adjusting rods 2, aligning one side of a through hole of each sliding block 4 with a flange bolt hole in the valve, and locking the sliding blocks on a flange in the valve by using a flange bolt in original valve equipment;
5) Adjusting the positions of the 3 adjusting nuts 3 to tightly attach the 3 centering adjusting rods 2 to the valve grinding tool rod, and locking the 3 adjusting nuts 3 after ensuring that the 3 centering adjusting rods 2 have consistent elongation, thereby ensuring accurate centering;
6) And after all adjustments are finished, grinding the valve seat of the stop valve by using a grinder.
7) After finishing the grinding work, gradually loosen 3 adjusting nuts 3, loosen flange bolts in the valve for fastening 3 sliding blocks 4, take off 3 sliding blocks 4, subsequently loosen and take off 3 adjusting nuts, take off 3 centering adjusting rods 2, and finally take off the fixed block 1 and place.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a stop valve disk seat grinds centering adjustment instrument which characterized in that: the centering adjusting device comprises a fixed block (1), a centering adjusting rod (2) and a sliding block (4), wherein the fixed block (1) is of a regular hexagonal frame structure, and through holes are formed in the center positions of three spaced sides respectively to ensure that a centering adjusting tool acts on a valve rod stably; one end of the centering adjusting rod (2) is inserted into the through hole of the fixing block (1); the sliding block (4) is sleeved on the centering adjusting rod (2) and is used for being connected with a flange bolt hole in the valve.
2. The stop valve seat grinding centering adjustment tool of claim 1, wherein: the centering adjusting rod (2) is a cylinder, one end of the centering adjusting rod is of a telescopic structure, and a U-shaped joint is mounted at the top of the centering adjusting rod and is tightly attached to the valve rod.
3. The stop valve seat grinding centering adjustment tool of claim 2, wherein: the telescopic end of the centering adjusting rod (2) is inserted into the through hole.
4. The stop valve seat grinding centering adjustment tool of claim 1, wherein: the adjusting device is characterized by further comprising an adjusting nut (3), wherein the adjusting nut (3) is connected through threads and sleeved on the centering adjusting rod (2), and the extension of the portion, inserted into the through hole, of the centering adjusting rod (2) is adjusted through the adjusting nut (3).
5. The stop valve seat grinding centering adjustment tool of claim 4, wherein: the adjusting nut (3) is positioned outside the fixing block (1).
6. The stop valve seat grinding centering adjustment tool of claim 1, wherein: the sliding block (4) is of a U-shaped structure, one end of the sliding block is provided with a through hole in the vertical direction, the sliding block is sleeved on the centering adjusting rod (2) and is connected with the centering adjusting rod through threads, and the other end of the sliding block is provided with a through hole in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221649609.8U CN218194515U (en) | 2022-06-28 | 2022-06-28 | Special centering adjustment tool for grinding valve seat of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221649609.8U CN218194515U (en) | 2022-06-28 | 2022-06-28 | Special centering adjustment tool for grinding valve seat of stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218194515U true CN218194515U (en) | 2023-01-03 |
Family
ID=84647616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221649609.8U Active CN218194515U (en) | 2022-06-28 | 2022-06-28 | Special centering adjustment tool for grinding valve seat of stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218194515U (en) |
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2022
- 2022-06-28 CN CN202221649609.8U patent/CN218194515U/en active Active
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