Special tool for disassembling high-pressure adjusting valve and combining valve seat

Abstract

The utility model discloses a special tool for disassembling a high-pressure adjusting valve and combining a valve seat, which comprises a bearing part arranged on a supporting seat, a clamping cavity arranged on the bearing part in a sleeving manner and used for fixing and clamping the valve core, and a clamping part arranged on the supporting seat and used for clamping the clamping cavity on the valve core, the twisting dismounting part is arranged on the bearing part, a fixing hole is formed in the twisting dismounting part, the valve rod is clamped and sleeved with the fixing hole, and the twisting dismounting part is used for twisting the valve rod to dismount the valve element and the valve rod; the valve element is clamped and fixed to the bearing part through heating expansion. The valve rod is clamped and fixed to the twisting detaching part through heating expansion, a plurality of holes are formed in the portion, close to the bottom, of the bearing part, the supporting seat comprises a supporting plate and a groove used for installing the bearing part, and an installing hole in clearance fit with the valve rod is formed in the twisting iron plate. According to the utility model, the disassembly of the valve core and the valve rod is realized, and the damage caused by clamping and disassembly by using a bolt or a clamping piece is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of high-pressure valve disassembly tools, and in particular to a special tool for disassembling and assembling high-pressure regulating valves and valve seats. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the transported medium. As the installed capacity of gas turbines increases year by year, their importance in my country's power industry is becoming increasingly prominent. Therefore, the safe and stable operation of gas turbine units is the key to ensuring the healthy development of the power industry. To ensure the reliability of gas turbines and steam turbines, regular maintenance of gas turbines is required.

[0003] Currently, the valve core and valve stem of the main steam valve are all original imports. They are disassembled by tightening with bolts or clamps. However, there are still the following shortcomings: tightening with bolts may cause damage, especially since the valve core and valve stem are subjected to vibration and alternating loads for a long time, which will increase the damage caused by tightening with bolts. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings by providing a special tool for disassembling and assembling high-pressure regulating valves, enabling the disassembly of the valve core and valve stem, and preventing damage caused by using bolts or clamps for disassembly.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a special tool for disassembling and assembling high-pressure regulating valves, comprising:

[0006] The bearing part is disposed on the support base. The bearing part is provided with a clamping cavity, which is sleeved on the valve core. The bearing part is used to fix and clamp the valve core.

[0007] A twisting disassembly part is provided on the bearing part. The twisting disassembly part is provided with a fixing hole. The fixing hole is clamped and sleeved on the valve stem. The twisting disassembly part is used to twist the valve stem to disassemble the valve core and the valve stem.

[0008] The valve core is fixed to the bearing portion by heating and expanding;

[0009] The valve stem is fixed in place by being heated and expanded, and then clamped to the twisting disassembly part.

[0010] Furthermore, the supporting part has multiple holes near the bottom.

[0011] Furthermore, the support base includes a support plate and a groove for mounting the bearing portion.

[0012] Furthermore, it also includes a mounting base for installing the support base;

[0013] The mounting base is fixedly installed to the support plate by bolts.

[0014] Furthermore, the twisting disassembly part includes a positioning seat disposed on the bearing part and a twisting iron plate disposed on the positioning seat.

[0015] Furthermore, a screw adapted to the valve stem is provided on the fixing hole.

[0016] The beneficial effects of this utility model are reflected in:

[0017] This invention involves mounting the valve core and valve stem on a fixed base via a support and a bearing portion. The valve core drives the valve stem to be mounted on the bearing portion. Then, through heating, the valve core expands and is pressed and fixed to the bearing portion. Next, it is mounted on the valve stem via a twisting disassembly portion. After heating, the valve stem expands and is clamped by the valve stem and the twisting disassembly portion. Finally, the valve core and valve stem are disassembled by rotating the twisting plate. This design avoids clamping the valve core and valve stem with bolts or other rigid clamping devices, preventing damage to the valve core and valve stem during the clamping process. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective view of the support component of this utility model;

[0020] Figure 3 This is a perspective view of the twisting and disassembly part of this utility model;

[0021] Figure 4 This is a perspective view of the valve stem and valve core of this utility model.

[0022] In the picture:

[0023] 1. Supporting part; 11. Hole;

[0024] 2. Support base; 21. Support plate; 22. Groove;

[0025] 3. Fixture;

[0026] 4. Twisting disassembly part; 41. Positioning seat; 42. Twisting iron plate; 43. Fixing hole;

[0027] 5. Valve stem;

[0028] 6. Valve core. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0030] Please see Figure 1-4 This utility model discloses a special tool for disassembling and assembling high-pressure regulating valves, comprising:

[0031] The bearing part 1 is fixedly mounted on the support base 2. The bearing part 1 has a clamping cavity, which is sleeved on the valve core 6. The expansion coefficient of the valve core 6 is greater than that of the bearing part 1. Under the same heating temperature, the expansion speed and effect of the valve core 6 are more significant. The bearing part 1 is fixed to the support base 2 by welding. The bearing part 1 is used to fix and clamp the valve core 6, thereby achieving the fixed and limited positioning of the valve core 6 by the bearing part 1.

[0032] The twisting disassembly part 4 is movably mounted on the bearing part 1. The bearing part 1 supports the twisting disassembly part 4. The twisting disassembly part 4 is placed on the bearing part 1. The twisting disassembly part 4 is provided with a fixing hole 43. The fixing hole 43 clamps and sleeves the valve stem 5. The expansion coefficient of the valve stem 5 is greater than that of the twisting disassembly part 4. Under the same heating temperature, the expansion speed and effect of the valve stem 5 are more significant. The twisting disassembly part 4 is used to twist the valve stem 5 to disassemble the valve core 6 and the valve stem 5. The twisting disassembly part 4 is used to fix and press the valve stem 5 after heating and expanding.

[0033] The valve core 6 is fixed to the bearing part 1 by heating and expansion, which facilitates clamping and prevents damage to the valve core 6 when the bolts or clamping parts are tightened.

[0034] The valve stem 5 is secured by heating expansion and twisting disassembly part 4, which facilitates the clamping of the valve stem 5 and prevents damage to the valve stem 5 when the bolts or clamping parts are tightened.

[0035] In use, the valve core 6 is fitted with a clearance fit inside the bearing part 1. When heated, the expansion rate of the valve core 6 is faster than that of the bearing part 1, and the valve core 6 is pressed tightly inside the bearing part 1. Then, it is fitted with a clearance fit on the valve stem 5 through the twisting disassembly part 4. When heated, the twisting disassembly part 4 and the valve stem 5 are pressed tightly together. Then, by rotating the twisting disassembly part 4, the valve stem 5 and the valve core 6 are disassembled to prevent damage to the valve core 6 and the valve stem 5 and to avoid deformation of the valve core 6 and the valve stem 5 affecting the sealing performance. Then, by cooling, the valve core 6 and the bearing part 1, as well as the valve stem 5 and the twisting disassembly part 4, are disassembled.

[0036] In a specific embodiment, the support part 1 is provided with a plurality of holes 11 near the bottom, which are used to dissipate heat from the support part 1 and the valve core 6.

[0037] In one embodiment, the support base 2 includes a support plate 21 and a groove 22 for mounting the bearing part 1. The groove 22 is used to expose the hole 11 to facilitate heat dissipation of the bearing part 1 and the valve core 6.

[0038] In a specific embodiment, a fixing seat 3 is also included for mounting the support seat 2. The fixing seat 3 is used to install and support the support seat 2, thereby increasing the stability of the support seat 2.

[0039] The fixed base 3 is fixedly installed to the support plate 21 by bolts, which facilitates the installation and disassembly of the fixed base 3 and the support plate 21.

[0040] In one embodiment, the twisting disassembly part 4 includes a positioning seat 41 disposed on the support part 1 and a twisting iron plate 42 disposed on the positioning seat 41. The positioning seat 41 is placed on the support part 1, and the positioning seat 41 and the twisting iron plate 42 are rotatably disposed. A circular groove is opened at the bottom of the positioning seat 41 to match the top of the support part 1, so as to ensure that the twisting iron plate 42 on the positioning seat 41 and the valve stem 5 are centrally engaged. By heating the valve stem 5 to expand, it is pressed and fixed by the fixing hole 43 on the twisting iron plate 42 and the valve stem 5, which facilitates installation and fixation and prevents damage to the valve stem 5.

[0041] In a specific embodiment, a screw adapted to the valve stem 5 is provided on the fixing hole 43 to prevent the fixing hole 43 from damaging the screw on the valve stem 5 when the valve stem 5 is pressed against the fixing hole 43 after heating.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] Additionally, "multiple" refers to two or more.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special tool for disassembling and assembling high-pressure regulating valves, characterized in that, include: The bearing part (1) is provided on the support base (2). The bearing part (1) is provided with a clamping cavity, which is sleeved on the valve core (6). The bearing part (1) is used to fix and clamp the valve core (6). The twisting disassembly part (4) is provided on the bearing part (1). The twisting disassembly part (4) is provided with a fixing hole (43). The fixing hole (43) is clamped and sleeved on the valve stem (5). The twisting disassembly part (4) is used to twist the valve stem (5) to disassemble the valve core (6) and the valve stem (5). The valve core (6) is fixed to the bearing part (1) by heating and expansion; The valve stem (5) is tightened and fixed to the twisting disassembly part (4) by heating and expanding.

2. The special tool for disassembling and assembling a high-pressure regulating valve according to claim 1, characterized in that: The supporting part (1) has multiple holes (11) near the bottom.

3. The special tool for disassembling and assembling a high-pressure regulating valve according to claim 1, characterized in that: The support base (2) includes a support plate (21) and a groove (22) for mounting the bearing part (1).

4. The special tool for disassembling and assembling a high-pressure regulating valve according to claim 3, characterized in that: It also includes a fixing base (3) for mounting the support base (2); The mounting base (3) is fixedly installed to the support plate (21) by bolts.

5. A special tool for disassembling and assembling a high-pressure regulating valve according to claim 1, characterized in that: The twisting disassembly part (4) includes a positioning seat (41) provided on the bearing part (1) and a twisting iron plate (42) provided on the positioning seat (41).

6. The special tool for disassembling and assembling a high-pressure regulating valve according to claim 5, characterized in that: The fixing hole (43) is provided with a screw that is compatible with the valve stem (5).

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