Turbine quick-closing valve internal slide valve dismounting and mounting device and use method

Abstract

The invention relates to the technical field of slide valve dismounting tools, in particular to a dismounting device for an internal slide valve of a quick-closing valve of a steam turbine and a using method of the dismounting device for the internal slide valve of the quick-closing valve of the steam turbine. Two threaded holes are formed in the slide valve base; a through hole is formed in the transverse plate, and the transverse plate is connected with the sliding valve base through a bolt penetrating through the through hole and fixed to the sliding valve base. Two screw holes are formed in the sliding valve, and guide grooves matched with the screw holes are formed in the corresponding positions of the vertical plate; wherein the guide groove on the vertical plate is in threaded connection with a screw hole of the slide valve through a screw, so that the long cross plate is connected with the slide valve. The method has the beneficial effects that the long cross plate is adopted as a tool and is fixed with the slide valve, so that the slide valve is simpler and quicker to disassemble and assemble, the sealing surface of the slide valve is prevented from being damaged, the mounting is accurate, and the maintenance period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of slide valve disassembly tools, in particular to a disassembly device for an internal slide valve of a steam turbine quick-closing valve and a use method thereof. Background Art

[0002] As a key equipment for modern energy conversion, steam turbines play an important role in power generation, chemical industry, petroleum and other industries. The quick-closing valve (or fast-closing valve) is one of the core components in the EH (Electro-Hydraulic) oil system of the steam turbine. It is responsible for controlling the speed and pressure of the main steam entering the steam turbine to ensure the safe operation of the steam turbine. In order to ensure the working performance of the quick-closing valve, it is essential to disassemble, inspect and maintain the quick-closing valve regularly.

[0003] In the existing quick-closing valve maintenance process, the disassembly and installation of the slide valve is a technically difficult and time-consuming task. Due to the compact structure and high matching precision of the slide valve, coupled with the wear and corrosion problems that may occur after long-term use, the slide valve is prone to jamming during the disassembly and installation process. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] The purpose of the present invention is to provide a device for disassembling and assembling a sliding valve inside a quick-closing valve of a steam turbine.

[0006] Therefore, the purpose is to solve the problem that the slide valve is prone to getting stuck during the disassembly and assembly process.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for disassembling and assembling a sliding valve inside a turbine quick-closing valve, which includes a long cross plate composed of a horizontal plate and a vertical plate; a sliding valve base; a through hole is provided on the horizontal plate, and is connected to the sliding valve base by bolts passing through the through hole, and is fixed to the sliding valve base; a sliding valve, wherein two thread holes are provided on the sliding valve, and guide grooves matching the thread holes are provided at corresponding positions on the vertical plate; wherein the guide grooves on the vertical plate are threadedly connected to the thread holes of the sliding valve by screws, so that the long cross plate is connected to the sliding valve.

[0008] As a preferred solution of the internal sliding valve disassembly and assembly device of the steam turbine quick-closing valve of the present invention, the vertical plate is vertically fixed on the horizontal plate, and together with the horizontal plate, forms a "cross" structure.

[0009] As a preferred solution of the internal sliding valve disassembly and assembly device of the steam turbine quick-closing valve of the present invention, the horizontal plate and the vertical plate are firmly connected into one by welding or mechanical fasteners.

[0010] As a preferred solution of the internal sliding valve disassembly and assembly device of the steam turbine quick-closing valve of the present invention, wherein: the through hole on the horizontal plate allows the bolt to move within a certain range.

[0011] As a preferred solution of the internal sliding valve disassembly and assembly device of the steam turbine quick-closing valve of the present invention, wherein: the guide groove on the vertical plate is used to guide the movement direction of the screw.

[0012] As a preferred solution of the internal sliding valve disassembly and assembly device of the steam turbine quick-closing valve of the present invention, an elastic gasket is arranged between the sliding valve and the screw, and the elastic gasket is made of a material with good elasticity and corrosion resistance.

[0013] As a preferred solution of the internal sliding valve disassembly and assembly device of the steam turbine quick-closing valve of the present invention, reinforcing ribs are provided at the connection between the horizontal plate and the vertical plate.

[0014] As a preferred solution of the internal sliding valve disassembly and assembly device of the turbine quick-closing valve of the present invention, wherein: a support seat connected to bolts is provided on the sliding valve base, a threaded hole is opened on the support seat, and the height of the support seat is greater than the sliding valve.

[0015] As a preferred solution of the internal sliding valve disassembly and assembly device of the steam turbine quick-closing valve of the present invention, the long cross plate is made of high-strength aluminum alloy material, and the surface is anodized.

[0016] As a preferred solution of the internal slide valve disassembly and assembly device of the steam turbine quick closing valve of the present invention, wherein:

[0017] In order to solve the above technical problems, the present invention also provides the following technical solutions: a method for using a steam turbine quick-closing valve internal slide valve disassembly and assembly device, comprising a steam turbine quick-closing valve internal slide valve disassembly and assembly device, and,

[0018] Place the long cross plate on one side of the slide valve base so that the through hole on the long cross plate is aligned with the threaded hole on the slide valve base;

[0019] Screw the bolt into the threaded hole of the slide valve base through the through hole to fix the long cross plate to the slide valve base;

[0020] Use the guide groove on the long cross plate to align the screws with the thread holes of the slide valve and tighten them to achieve a fixed connection between the slide valve and the long cross plate;

[0021] After completing the above fixing operation, the long cross plate is removed by loosening the bolts and screws, thereby driving the slide valve to be separated from the slide valve base.

[0022] The beneficial effects of the present invention are as follows: the long cross plate is used as a tool, and through its fixation with the slide valve, the disassembly and assembly of the slide valve becomes simpler and faster, ensuring that the sealing surface of the slide valve is not damaged, the installation is accurate, and the maintenance period is shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the top view structure in the present invention.

[0026] Figure 3 It is a schematic diagram of the separation structure of the slide valve and the slide valve base in the present invention.

[0027] In the figure:

[0028] 100, long cross plate; 101, horizontal plate; 102, vertical plate; 103, through hole; 104, bolt; 105, guide groove; 106, screw; 107, support seat;

[0029] 200, sliding valve base; 201, threaded hole; 202, sliding valve; 203, thread hole. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figure 1-2 , which is the first embodiment of the present invention, and provides a disassembly and assembly device for the internal sliding valve of a turbine quick-closing valve, comprising a long cross plate 100, which is composed of a horizontal plate 101 and a vertical plate 102; a sliding valve base 200; a through hole 103 is provided on the horizontal plate 101, and is connected to the sliding valve base 200 by a bolt 104 passing through the through hole 103 to fix the sliding valve base 200; a sliding valve 202, wherein two thread holes 203 are provided on the sliding valve 202, and a guide groove 105 matching the thread hole 203 is provided at a corresponding position on the vertical plate 102; wherein the guide groove 105 on the vertical plate 102 is threadedly connected to the thread hole 203 of the sliding valve 202 by a screw 106, so that a stable fixed connection is formed between the long cross plate 100 and the sliding valve 202.

[0035] In this embodiment, the long cross plate 100 is composed of a horizontal plate 101 and a vertical plate 102, forming a "cross" structure. The design of the vertical plate 102 is more focused on the cooperation with the slide valve 202. The vertical plate 102 is provided with a guide groove 105 matching the thread hole 203 of the slide valve 202, and the vertical plate 102 is connected to the slide valve 202 by screws 106.

[0036] The traditional disassembly and assembly method of the slide valve 202 often relies on manual operation, which is not only time-consuming and labor-intensive, but also prone to misoperation. The precise matching of the guide groove 105 and the thread hole 203 ensures that the position of the slide valve 202 is accurate during the disassembly and assembly process, reducing the failure rate caused by position deviation.

[0037] Specifically, first, the horizontal plate 101 of the long cross plate 100 is used and fixed with bolts 104, which can significantly improve the stability of the entire device and reduce shaking or displacement during operation.

[0038] Subsequently, the vertical plate 102 of the long cross plate 100 is designed with a guide groove 105 matching the two thread holes 203 on the slide valve 202. By passing the screw 106 through the guide groove 105 on the vertical plate 102 and threading it with the thread holes 203 of the slide valve 202, a stable fixation between the long cross plate 100 and the slide valve 202 can be achieved. Finally, the bolt 104 is removed, and the user can easily remove the slide valve 202 by pulling the long cross plate 100.

[0039] In yet another embodiment, consider using a quick-release connector to replace the traditional bolt connection, such as a claw-type connection, so that when maintenance or replacement of parts is required, quick disassembly and assembly can be achieved, saving time.

[0040] The claw is used to replace the screw 106, and the slot is used to replace the thread hole 203. When in use, align the claw on the long cross plate 100 with the slot on the slide valve 202. Press the claw into the slot with force until a "click" sound is heard, indicating that the claw has been locked in place. Pull the long cross plate 100 to make the claw drive the slide valve 202 out. When maintenance or replacement of parts is required, it can be quickly disassembled, which improves maintenance efficiency.

[0041] Example 2

[0042] Reference Figure 2-3 , which is the second embodiment of the present invention, provides a disassembly and assembly device for the internal sliding valve of a turbine quick-closing valve, wherein the vertical plate 102 is vertically fixed on the horizontal plate 101, and together with the horizontal plate 101, forms a "cross" structure. The horizontal plate 101 and the vertical plate 102 are firmly connected as a whole by welding or mechanical fasteners. The through hole 103 on the horizontal plate 101 allows the bolt 104 to move within a certain range. The guide groove 105 on the vertical plate 102 is used to guide the movement direction of the screw 106. The long cross plate 100 is made of high-strength aluminum alloy material, and the surface is anodized.

[0043] In this embodiment, as a basic supporting component, the horizontal plate 101 is usually made of high-strength aluminum alloy or other metal materials with sufficient strength and toughness to ensure that it can withstand a certain weight and external force. According to actual needs, the thickness, width and length of the horizontal plate 101 can be appropriately adjusted. The vertical plate 102 is vertically connected to the horizontal plate 101, and the same or similar material as the horizontal plate 101 is also selected to ensure good compatibility and connection strength between the two. The through hole 103 on the horizontal plate 101 allows the bolt 104 to move within a certain range, which provides flexibility during the installation process, so that even in the presence of assembly errors, the assembly can be successfully completed. In addition, the through hole 103 can also reduce the overall weight and reduce material costs. The function of the guide groove 105 on the vertical plate 102 is to guide the screw 106 to move in a straight line along a predetermined path to ensure installation accuracy and avoid problems caused by offset.

[0044] Example 3

[0045] Reference Figure 1-3 , which is the third embodiment of the present invention, provides a device for disassembling and assembling a sliding valve inside a steam turbine quick-closing valve, wherein an elastic gasket is provided between the sliding valve 202 and the screw 106, and the elastic gasket is made of a material with good elasticity and corrosion resistance. A reinforcing rib is provided at the connection between the horizontal plate 101 and the vertical plate 102. A support seat 107 connected to the bolt 104 is provided on the sliding valve base 200, and a threaded hole 201 is provided on the support seat 107, and the height of the support seat 107 is greater than the sliding valve 202.

[0046] In this embodiment, an elastic gasket is arranged between the sliding valve 202 and the screw 106. The elastic gasket is made of a material with good elasticity and corrosion resistance. The elastic gasket can also absorb vibration to prevent the sliding valve 202 from being damaged. In order to enhance the overall structural strength of the device, this solution sets reinforcing ribs at the connection between the horizontal plate 101 and the vertical plate 102. The design of the reinforcing ribs not only improves the rigidity of the device, making it less likely to deform when subjected to a large external force, but also optimizes the distribution of force and avoids damage caused by local stress concentration. At the connection between the bolt 104 and the sliding valve base 200, a support seat 107 is specially designed, and the height of the support seat 107 is greater than the sliding valve 202 itself. The main purpose of this design is to prevent the sealing surface of the sliding valve 202 from being damaged during the disassembly and assembly process.

[0047] The method for using the internal sliding valve disassembly and assembly device of the turbine quick-closing valve is as follows: the horizontal plate 101 is provided with through holes 103 corresponding to the threaded holes 201 on the support seat 107. By passing the bolts 104 through these through holes 103 and screwing them into the threaded holes 201 of the support seat 107, the long cross plate 100 can be firmly fixed on the sliding valve base 200. During the installation process, the long cross plate 100 is first fixed to the sliding valve base 200, and then the screws 106 are aligned with the threaded holes 203 of the sliding valve 202 through the guide grooves 105 and tightened. In this way, the sliding valve 202 is firmly fixed on the long cross plate 100, thereby ensuring stability and accuracy during the disassembly and assembly process. Subsequently, the bolts 104 are removed, and the long cross plate 100 is pulled to drive the sliding valve 202 to separate.

[0048] In order to further improve the efficiency of assembly and disassembly, it is proposed to use a quick-release connector to replace the traditional bolt 104 connection method. This quick-release connector can be a claw-type connection.

[0049] The characteristic of the claw connection is that it can quickly complete the connection or separation between the slide valve 202 and the long cross plate 100 without using tools. Specifically, the vertical plate 102 of the long cross plate 100 is provided with a claw, and the slide valve 202 is provided with a corresponding slot. When in use, it is only necessary to align the claw on the long cross plate 100 with the slot on the slide valve 202, and then forcefully press the claw into the slot until a "click" sound is heard, indicating that the claw has successfully locked the slide valve 202. When disassembly is required, it is only necessary to pull the long cross plate 100, and the claw can be disengaged from the slot, thereby easily completing the disassembly of the slide valve 202.

[0050] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0052] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for disassembling and assembling the internal sliding valve of a steam turbine quick-closing valve, characterized in that: include, A long cross plate (100) is composed of a horizontal plate (101) and a vertical plate (102); Sliding valve base (200); A through hole (103) is provided on the horizontal plate (101), and a bolt (104) passes through the through hole (103) to connect with the slide valve base (200), and is fixed to the slide valve base (200); A sliding valve (202), wherein two thread holes (203) are arranged on the sliding valve (202), and guide grooves (105) matching the thread holes (203) are arranged at corresponding positions on the vertical plate (102); The guide groove (105) on the vertical plate (102) is threadedly connected to the thread hole (203) of the slide valve (202) through a screw (106), so that the long cross plate (100) and the slide valve (202) are connected.

2. The internal slide valve disassembly and assembly device of the steam turbine quick closing valve according to claim 1, characterized in that: The vertical plate (102) is vertically fixed on the horizontal plate (101), and together with the horizontal plate (101) forms a "cross" structure.

3. The internal slide valve disassembly and assembly device of the steam turbine quick closing valve according to claim 2, characterized in that: The horizontal plate (101) and the vertical plate (102) are firmly connected into one by welding or mechanical fasteners.

4. The internal slide valve disassembly and assembly device of a steam turbine quick closing valve according to claim 3, characterized in that: The through hole (103) on the transverse plate (101) allows the bolt (104) to move within a certain range.

5. The internal slide valve disassembly and assembly device of the steam turbine quick closing valve according to claim 4, characterized in that: The guide groove (105) on the vertical plate (102) is used to guide the movement direction of the screw (106).

6. The internal slide valve disassembly and assembly device of a steam turbine quick closing valve according to claim 1, characterized in that: An elastic gasket is provided between the sliding valve (202) and the screw (106), and the elastic gasket is made of a material with good elasticity and corrosion resistance.

7. The internal slide valve disassembly and assembly device of a steam turbine quick closing valve according to claim 6, characterized in that: Reinforcing ribs are provided at the connection between the transverse plate (101) and the vertical plate (102).

8. The internal slide valve disassembly and assembly device of a steam turbine quick closing valve according to claim 7, characterized in that: The slide valve base (200) is provided with a support seat (107) connected to the bolt (104), a threaded hole (201) is provided on the support seat (107), and the height of the support seat (107) is greater than that of the slide valve (202).

9. The internal slide valve disassembly and assembly device of a steam turbine quick closing valve according to claim 8, characterized in that: The long cross plate (100) is made of a high-strength aluminum alloy material, and its surface is anodized.

10. The method for using the internal sliding valve disassembly and assembly device of the steam turbine quick closing valve is characterized by: The device comprises a steam turbine quick-closing valve internal slide valve disassembly and assembly device as claimed in any one of claims 1 to 9, and Place the long cross plate on one side of the slide valve base so that the through hole on the long cross plate is aligned with the threaded hole on the slide valve base; Screw the bolt into the threaded hole of the slide valve base through the through hole to fix the long cross plate to the slide valve base; Use the guide groove on the long cross plate to align the screws with the thread holes of the slide valve and tighten them to achieve a fixed connection between the slide valve and the long cross plate; After completing the above fixing operation, the long cross plate is removed by loosening the bolts and screws, thereby driving the slide valve to be separated from the slide valve base.

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