CN216913713U - Diaphragm disc dismounting tool of side-discharge valve actuating mechanism - Google Patents
Diaphragm disc dismounting tool of side-discharge valve actuating mechanism Download PDFInfo
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- CN216913713U CN216913713U CN202220120558.3U CN202220120558U CN216913713U CN 216913713 U CN216913713 U CN 216913713U CN 202220120558 U CN202220120558 U CN 202220120558U CN 216913713 U CN216913713 U CN 216913713U
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- adjusting nut
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- drag reduction
- valve actuator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model provides a other row valve actuating mechanism's diaphragm dish extracting tool, includes screw thread locating lever, adjusting nut and regulation drag reduction subassembly, the screw thread locating lever be used for pass the diaphragm dish the bolt hole and with the fixed internal thread portion spiro union in the actuating mechanism inner chamber, the adjusting nut spiro union is in on the screw thread locating lever, adjust drag reduction subassembly and cup joint on the screw thread locating lever, adjusting nut is located adjust drag reduction subassembly's top and right it is spacing to adjust drag reduction subassembly, it is used for the top subsides to adjust drag reduction subassembly between adjusting nut and the diaphragm dish upper surface and reduce adjusting nut's rotating resistance. According to the utility model, by rotating the adjusting nut, the elastic potential energy of the spring in the actuating mechanism can be slowly and stably released or stored, so that the diaphragm disc can rise or fall along the threaded positioning rod, and finally the dismounting or mounting of the diaphragm disc is completed.
Description
Technical Field
The utility model relates to the technical field of valve maintenance of nuclear power stations, in particular to a diaphragm disc disassembling tool of a bypass valve actuating mechanism.
Background
Bypass valves are important valves commonly used in nuclear power plants to meet regulatory, quick-close and quick-open requirements under normal operating conditions (including startup and shutdown) and abnormal transient conditions (such as turbine tripping, step load reduction or main steam line isolation). In order to ensure the reliable operation of the bypass valve, the actuator of the bypass valve needs to be disassembled and maintained periodically. In daily maintenance, although there are operation instructions such as assembly methods, maintenance needs and safety regulations, there are few auxiliary tools. Therefore, operators often design some auxiliary tools for improving the convenience and safety of work, such as an auxiliary tool for assembling a bypass valve of a steam turbine of a nuclear power station, disclosed in the chinese utility model patent with application number CN201920990948.4, which includes a valve rod guide cone, a positioning detection device, a valve rod positioning disc, and an embedded circular magnet; the valve rod guide cone is arranged at the end part of the valve rod, and the positioning detection device is arranged in a groove at the end part of the valve cover bush; the valve rod positioning disc is installed to the valve core assembly, the embedded circular magnet is installed on the valve rod positioning disc, the tool is designed according to the structure of a valve component, positioning and guiding in the assembling process are increased, and the problem that the assembly is prone to jamming is effectively solved.
However, there are more than one problems associated with the assembly of the bypass valve, for example, the safe attachment and detachment of the diaphragm of the bypass valve actuator. The actuating mechanism of the bypass valve usually adopts a reaction type pneumatic membrane mechanism with a gas-loss closing function, and one of core components for realizing the gas-loss closing function is a spring arranged below a membrane disc. In order to maintain the inner cavity part of the actuating mechanism during disassembly maintenance, the diaphragm disc needs to be disassembled, the diaphragm disc is fixed on the spacing sleeve at the top of the yoke by four hexagon socket head cap bolts, a spring in a compressed state is arranged below the diaphragm disc, and if a wrench is directly used for disassembling the bolts, the diaphragm disc can be jacked up due to instant release of the compression amount of the spring, so that the damage of the diaphragm disc and even personal injury are caused; similarly, it is also necessary to ensure that the diaphragm disc and spring are securely and stably compressed into position when the diaphragm disc is being loaded back.
Disclosure of Invention
The utility model aims to provide a diaphragm disc disassembling tool for a bypass valve actuating mechanism, which solves the problem that the diaphragm disc is easy to jack up by a spring during disassembling and assembling in the prior art, so that the diaphragm disc is damaged and even is injured by a human body.
The specific technical scheme of the utility model is as follows: the utility model provides a other row valve actuating mechanism's diaphragm dish extracting tool, includes screw thread locating lever, adjusting nut and regulation drag reduction subassembly, the screw thread locating lever be used for pass the diaphragm dish the bolt hole and with the fixed internal thread portion spiro union in the actuating mechanism inner chamber, the adjusting nut spiro union is in on the screw thread locating lever, adjust drag reduction subassembly and cup joint on the screw thread locating lever, adjusting nut is located adjust drag reduction subassembly's top and right it is spacing to adjust drag reduction subassembly, it is used for the top subsides to adjust drag reduction subassembly between adjusting nut and the diaphragm dish upper surface and reduce adjusting nut's rotating resistance.
Preferably, the adjusting drag reduction assembly comprises an upper carrier, a lower carrier and a thrust bearing, wherein the upper carrier, the lower carrier and the thrust bearing are sleeved on the threaded positioning rod, the thrust bearing is loaded in the upper carrier and the lower carrier, and the upper carrier can rotate relative to the lower carrier through the thrust bearing.
Preferably, the adjusting drag reduction assembly further comprises a first washer for being interposed between the adjusting nut and the upper carrier.
Preferably, the conditioning drag reduction assembly further comprises a second washer for being interposed between the lower carrier and the diaphragm disc.
Preferably, the bottom surface of the adjusting nut is provided with a positioning column which extends vertically, and the top surface of the upper carrier is provided with a positioning hole into which the positioning column is inserted.
Preferably, the threaded positioning rod is integrally formed with a wrench connector.
Preferably, at least two wrench connecting nuts which are matched with each other are screwed on the threaded positioning rod.
Preferably, the threaded positioning rod is provided with rotating displacement scale marks at uniform intervals.
Preferably, the adjusting nut is provided with a radial side opening for observing the rotating displacement scale mark.
Preferably, the adjusting nut is a long nut.
The membrane disc disassembling tool has the technical advantages that by rotating the adjusting nut, elastic potential energy of a spring in the actuating mechanism can be slowly and stably released or stored, so that the membrane disc can rise or fall along the threaded positioning rod, and finally the membrane disc is disassembled or installed.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an actuator according to the prior art;
the names of the parts corresponding to the numbers in the figure are respectively as follows: 1-threaded positioning rod, 11-wrench connecting nut, 2-adjusting nut, 21-radial side opening, 3-adjusting drag reduction assembly, 31-upper carrier, 32-lower carrier, 33-thrust bearing, 34-first washer and 35-second washer.
Detailed Description
The utility model will be further illustrated by means of specific embodiments in the following description with reference to the accompanying drawings:
referring to fig. 2, which is a schematic view of the structure of the actuator, a diaphragm cover a is disposed on the actuator, a diaphragm plate b located therein can be seen by opening the diaphragm cover a, an inner hexagon bolt is connected to the diaphragm plate b, the inner hexagon bolt is in threaded connection with a spacer sleeve d, i.e., a fixed internal thread portion inside the actuator, so that the diaphragm plate b is fixed, and a compressed spring c is disposed below the diaphragm plate b. If all the bolts are directly dismounted one by a traditional tool, the membrane disc b is likely to be ejected because the spring c is instantly restored to a natural state, the membrane disc b is easy to damage and personal injury is likely to be caused, and the technical scheme of the utility model is designed for safely and stably dismounting the membrane disc b.
See fig. 1, an embodiment of other row valve actuating mechanism's diaphragm dish extracting tool, including thread locating lever 1, adjusting nut 2 and regulation drag reduction subassembly 3, thread locating lever 1 is used for passing the bolt hole of diaphragm dish and with the fixed internal thread portion spiro union in the actuating mechanism inner chamber, 2 spiro unions of adjusting nut are on thread locating lever 1, adjust drag reduction subassembly 3 cup joints on thread locating lever 1, adjusting nut 2 is located the top of adjusting drag reduction subassembly 3 and spacing to adjusting drag reduction subassembly 3, it pastes between adjusting nut 2 and diaphragm dish upper surface and reduces adjusting nut 2's rotating resistance to adjust drag reduction subassembly 3 is used for the top. When the diaphragm disc assembling and disassembling device is in actual use, the number of the bolts corresponding to the diaphragm disc needs to be prepared to replace the bolts disassembled on the diaphragm disc, the diaphragm disc pressed by the spring is limited, and the diaphragm disc is gradually lifted and lowered by rotating the adjusting nut 2, so that the spring gradually recovers the original shape or is gradually compressed again, and the stable and safe disassembling and assembling work of the diaphragm disc is completed.
Specifically, the adjusting drag reduction assembly 3 comprises an upper carrier 31, a lower carrier 32 and a thrust bearing 33 which are sleeved on the threaded positioning rod 1, wherein the thrust bearing 33 is loaded in the upper carrier 31 and the lower carrier 32, and the upper carrier 31 can rotate relative to the lower carrier 32 through the thrust bearing 33. In this embodiment, the upper carrier 31 and the lower carrier 32 are both configured as cylindrical boxes with an opening on the bottom, the thrust bearing 33 is wrapped by the two boxes respectively, and the two boxes do not contact with each other (or can be in clearance fit, for example, the upper box is wrapped outside the lower box or the lower box is wrapped outside the upper box) and press against the thrust bearing 33. Because this embodiment can be pressed by the diaphragm dish when dismouting diaphragm dish, if directly contact adjusting nut 2 and diaphragm dish or add the pad portion between adjusting nut 2 and diaphragm dish, all can make adjusting nut 2 when the rotating, need overcome great static friction power and sliding friction power, the rotating is very hard, difficult control and have the potential safety hazard, still can cause the serious wearing and tearing of diaphragm dish surface. Therefore, the adjusting and drag reducing assembly 3 is provided in the embodiment, that is, the characteristics of the thrust bearing 33 are utilized, so that the adjusting nut 2 is finally connected with the upper carrier 31, and can be easily and controllably rotated only by overcoming a small rolling friction force, thereby realizing the lifting and limiting of the diaphragm disc, and the lower carrier 32 is not moved relative to the diaphragm disc, thereby avoiding the abrasion of the surface of the diaphragm disc.
Further, a first washer 34 is arranged between the adjusting nut 2 and the upper carrier 31, so that the adjusting nut 2 is prevented from rotating to wear the upper carrier 31, and the service life of the upper carrier 31 is prolonged; a second washer 35 is also provided between the lower carrier 32 and the diaphragm disc to avoid possible damage of the lower carrier 32 to the diaphragm disc, the diameter of the second washer 35 may be larger than the diameter of the lower carrier 32.
Furthermore, a positioning column extending vertically is further disposed on the bottom surface of the adjusting nut 2, and a positioning hole for inserting the positioning column is disposed on the top surface of the upper carrier 31, so that the adjusting nut 2 and the upper carrier 31 can be ensured to rotate synchronously without relative rotation.
Furthermore, the threaded positioning rod 1 is also in threaded connection with two wrench connecting nuts 11 which are matched with each other, a common outer hexagon nut can be selected, the two wrench connecting nuts 2 mutually form limiting, and a wrench can conveniently screw the threaded positioning rod 1 into or out of an inner threaded part in the execution mechanism through the wrench connecting nuts; meanwhile, when the adjusting nut 2 rotates, the situation that the threaded positioning rod 1 is driven to be screwed out of the internal threaded part of the executing mechanism is possible to occur, and the wrench connecting nut 11 is also convenient for enabling a wrench to fix the threaded positioning rod 1 in real time through the threaded positioning rod 1 in the assembling and disassembling process, so that the operation safety is improved. Of course, more wrench coupling nuts 11 can be provided, but two are sufficient; the wrench connector 11 integrally formed on the threaded positioning rod 1 can be replaced by the wrench connector 11, and is generally arranged in an outer hexagon nut shape, the whole bolt looks like a bolt, only the commonly used bolt is relatively short, and the threaded positioning rod 1 in the embodiment needs to have enough length to ensure the safe release of the spring and the diaphragm disc.
Further, be equipped with evenly spaced rotating displacement scale mark on the screw thread locating lever 1, if can set up round colour mark at every certain interval of predetermineeing, conveniently unify all adjusting nut 2's of this instrument that have replaced the bolt of diaphragm dish rotating displacement for the whole of diaphragm dish steadily accurately goes up and down to remove, avoids because adjusting nut 2's of each instrument rotating displacement differs and cause the operating accident. In order to more conveniently and accurately utilize the rotating displacement scale marks, the adjusting nut 2 is also provided with a radial side opening 21 for observing the rotating displacement scale marks, and the adjusting nut 2 preferably adopts a hexagonal long nut, so that a wrench is convenient to connect and rotate, and the radial side opening 21 is also convenient to open.
The use method of the tool comprises the following steps: taking the membrane disc as an example, 1) after removing the membrane cover, firstly, disassembling the bolt of one membrane disc, and then replacing and installing the tool, namely, penetrating the threaded positioning rod 1 through the bolt hole of the membrane disc and fixing the threaded positioning rod on an internal thread part in the actuating mechanism; 2) the other bolts are detached one by one and are simultaneously replaced and installed in the tool (it is worth mentioning that although four bolts are generally available, if two bolt holes which are symmetrical or nearly symmetrical about the circle center of the diaphragm disc exist, the tool can be installed in the two bolt holes instead, so that the operation is saved); 3) synchronously rotating the adjusting nuts 2 until the spring in the actuating mechanism returns to a natural state, ensuring that the rotating displacement of each adjusting nut 2 is basically consistent by virtue of rotating displacement scale marks, and simultaneously arranging another operator to connect a wrench connecting nut 11 by a wrench to prevent the threaded positioning rod 1 from being rotated by the adjusting nut 2; 4) confirming that the spring has fully released the elastic potential energy, and removing the diaphragm disc and the tool. Similarly, if the diaphragm disk is to be reinstalled, the steps of disassembling the diaphragm disk are basically reversed, that is, the diaphragm disk is completely fixed by the tool, the spring is pressed, and then the tool is disassembled one by one and the bolt of the diaphragm disk is replaced again.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and any variations or modifications may be made to the embodiments of the present invention without departing from the principles.
Claims (10)
1. The utility model provides a by-pass valve actuating mechanism's diaphragm dish extracting tool which characterized in that: including screw thread locating lever (1), adjusting nut (2) and regulation drag reduction subassembly (3), screw thread locating lever (1) be used for passing the bolt hole of diaphragm dish and with the fixed internal thread portion spiro union in the actuating mechanism inner chamber, adjusting nut (2) spiro union is in on screw thread locating lever (1), adjust drag reduction subassembly (3) and cup joint on screw thread locating lever (1), adjusting nut (2) are located the top of adjusting drag reduction subassembly (3) is right it is spacing to adjust drag reduction subassembly (3), it is used for the top subsides to adjust drag reduction subassembly (3) between adjusting nut (2) and the diaphragm dish upper surface and reduce the rotating resistance of adjusting nut (2).
2. The diaphragm plate removal tool of a bypass valve actuator of claim 1, wherein: the adjusting and drag reducing assembly (3) comprises an upper carrier (31), a lower carrier (32) and a thrust bearing (33) which are sleeved on the threaded positioning rod (1), wherein the thrust bearing (33) is loaded in the upper carrier (31) and the lower carrier (32), and the upper carrier (31) can rotate relative to the lower carrier (32) through the thrust bearing (33).
3. The diaphragm plate removal tool of a bypass valve actuator of claim 2, wherein: the adjusting and drag reducing assembly (3) further comprises a first washer (34), and the first washer (34) is used for being cushioned between the adjusting nut (2) and the upper carrier (31).
4. The diaphragm plate removal tool of a bypass valve actuator of claim 2, wherein: the adjusting and drag reducing assembly (3) further comprises a second washer (35), wherein the second washer (35) is used for being arranged between the lower carrier (32) and the diaphragm disc in a cushioning mode.
5. The diaphragm plate removal tool of a bypass valve actuator of claim 2, wherein: the bottom surface of the adjusting nut (2) is provided with a positioning column which vertically extends out, and the top surface of the upper carrier (31) is provided with a positioning hole for the positioning column to insert.
6. The diaphragm plate removal tool of a bypass valve actuator of claim 1, wherein: a wrench connector is integrally formed on the threaded positioning rod (1).
7. The diaphragm plate removal tool of a bypass valve actuator of claim 1, wherein: the threaded positioning rod (1) is screwed with at least two wrench connecting nuts (11) which are matched with each other.
8. The diaphragm plate removal tool of a bypass valve actuator of claim 1, wherein: and the threaded positioning rod (1) is provided with rotating displacement scale marks at uniform intervals.
9. The diaphragm plate removal tool of a bypass valve actuator of claim 1, wherein: and a radial side opening (21) for observing the rotating distance scale mark is arranged on the adjusting nut (2).
10. A diaphragm plate removal tool for a by-pass valve actuator according to claim 1, 5, 8 or 9, wherein: the adjusting nut (2) is a long nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220120558.3U CN216913713U (en) | 2022-01-18 | 2022-01-18 | Diaphragm disc dismounting tool of side-discharge valve actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220120558.3U CN216913713U (en) | 2022-01-18 | 2022-01-18 | Diaphragm disc dismounting tool of side-discharge valve actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216913713U true CN216913713U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220120558.3U Active CN216913713U (en) | 2022-01-18 | 2022-01-18 | Diaphragm disc dismounting tool of side-discharge valve actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216913713U (en) |
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2022
- 2022-01-18 CN CN202220120558.3U patent/CN216913713U/en active Active
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