Valve element assembly disassembling tool of high-low pressure bypass valve

Abstract

The utility model discloses a valve element assembly disassembling tool of a high-low pressure bypass valve, and belongs to the technical field of bypass valve assembling. The device comprises a cross beam, a lifting lug, a positioning sheath, a connecting rod, a flange, a pin and a connecting bolt, the lifting lug is mounted on the cross beam, the flange is fixedly mounted on one side of the cross beam, the positioning sheath is fixedly mounted on the flange, the connecting rod is slidably mounted in the positioning sheath, the positioning sheath and the connecting rod are fixedly connected through the pin, and the connecting bolt is arranged on the flange. The utility model aims to solve the problem that the valve core assembly of the bypass valve with the valve rod parallel to the ground is easy to damage during disassembly, and effectively solves the problem that the valve core assembly of the bypass valve with the valve rod parallel to the ground is easy to damage during disassembly, so that the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to a tool for disassembling a valve core component of a high- and low-pressure bypass valve, belonging to the technical field of bypass valve assembly. Background Art

[0002] High- and low-pressure bypass valves are regulating valves used to protect steam turbines. They consist of a valve core assembly, a sleeve, and other components. When the valve stem is installed parallel to the ground, the valve core assembly safely operates within the sleeve during normal operation, guided and restrained by the actuator and stem packing, and lubricated by the steam medium. However, during disassembly, the valve core assembly loses its guiding, restraining, and lubricating properties, and, under the influence of gravity, will fit tightly against the sleeve. Removal of the valve core assembly at this time can cause relative displacement between the valve core assembly and the sleeve, which can easily cause scratches on the valve core assembly and sleeve, leading to component damage.

[0003] Therefore, it is urgent to propose a new type of valve core assembly disassembly tool for high and low pressure bypass valves to solve the above technical problems. Utility Model Content

[0004] This utility model is developed to address the issue of easily damaged valve core assemblies during disassembly of bypass valves with stems installed parallel to the ground. The following provides a brief overview of the utility model to provide a basic understanding of certain aspects of the utility model. It should be understood that this overview is not an exhaustive overview of the utility model. It is not intended to identify key or important aspects of the utility model, nor is it intended to limit the scope of the utility model.

[0005] The technical solution of this utility model:

[0006] A valve core assembly disassembly tool for high and low pressure bypass valves includes a crossbeam, a lifting lug, a positioning sleeve, a connecting rod, a flange, a pin and a connecting bolt. The crossbeam is equipped with a lifting lug, a flange is fixedly installed on one side of the crossbeam, a positioning sleeve is fixedly installed on the flange, a connecting rod is slidably installed inside the positioning sleeve, and the two are fixedly connected by a pin, and a connecting bolt is provided on the flange.

[0007] Preferably, the connecting bolt is threadably connected to the sleeve of the high and low pressure bypass valve, an adjusting sleeve is sleeved on the outer side of the connecting bolt, and the adjusting sleeve is clamped between the flange and the sleeve.

[0008] Preferably, a reinforcing rib is fixedly provided between the cross beam and the flange.

[0009] Preferably, the positioning sleeve is provided with a plurality of equally spaced pin holes.

[0010] Preferably, a plurality of equally spaced pin holes are formed on the connecting rod, and the pins are installed in the pin holes where the positioning sleeve and the connecting rod coincide with each other.

[0011] Preferably, the cross-sections of the positioning sleeve and the connecting rod are both rectangular.

[0012] Preferably, the flange is connected to the connecting bolts through the strip holes.

[0013] Preferably, there are multiple strip-shaped holes, which are arranged in a circular array with the center of the flange as the center.

[0014] Preferably, the crossbeam, lifting lugs, reinforcing ribs and positioning sleeves are all fixedly connected by welding.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model effectively solves the problem that the valve core assembly of the bypass valve installed with the valve stem parallel to the ground is easily damaged during disassembly, thereby increasing the service life of the valve;

[0017] 2. The utility model can disassemble the valve core assembly and the sleeve at the same time, ensuring that there is no relative displacement between the valve core assembly and the sleeve, avoiding scratches on the valve core assembly and the sleeve, causing damage to the parts;

[0018] 3. The utility model has a simple structure, ingenious design, easy disassembly and assembly, and firm assembly. It can be applied to sleeves of different sizes, has a flexible structure, a wide range of applications, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram showing the use of a tool for removing the valve core assembly of a high- and low-pressure bypass valve;

[0020] Figure 2 It is a schematic diagram of the structure of a valve core assembly disassembly tool for high and low pressure bypass valves;

[0021] Figure 3 This is the installation diagram of the beam and reinforcement;

[0022] Figure 4 yes Figure 3 A-direction schematic diagram;

[0023] Figure 5 It is a structural schematic diagram of the connecting rod of the utility model;

[0024] Figure 6 yes Figure 5 BB cross-section diagram;

[0025] Figure 7 It is a structural schematic diagram of a group of adjustment sleeves described in the specific implementation method 1 of the utility model.

[0026] In the figure: 1- crossbeam, 2- lifting ear, 3- reinforcing rib, 4- positioning sleeve, 5- connecting rod, 6- flange, 7- adjusting sleeve, 8- pin, 9- connecting bolt, 10- pin hole, 11- bar hole, 101- valve body, 102- valve core assembly, 103- sleeve, 104- valve stem. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0028] The connections mentioned in this utility model are divided into fixed connections and detachable connections. The fixed connection refers to a non-detachable connection, including but not limited to conventional fixed connection methods such as hem connection, rivet connection, bonding connection, and welding connection. The detachable connection refers to but not limited to conventional detachable connection methods such as threaded connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly specified, it is assumed that at least one connection method can always be found among the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example, a welded connection is selected for a fixed connection, and a hinge connection is selected for a detachable connection.

[0029] Specific implementation method 1: Combination Figure 1-Figure 7 This embodiment describes a valve core assembly disassembly tool for a high- and low-pressure bypass valve, comprising a crossbeam 1, a lifting lug 2, a positioning sleeve 4, a connecting rod 5, a flange 6, a pin 8, and a connecting bolt 9. The crossbeam 1 is provided with a lifting lug 2, a flange 6 is fixedly mounted on one side of the crossbeam 1, a positioning sleeve 4 is fixedly mounted on the flange 6, a connecting rod 5 is slidably mounted inside the positioning sleeve 4, and the two are fixedly connected by a pin 8. A connecting bolt 9 is provided on the flange 6, and a reinforcing rib 3 is also fixedly provided between the crossbeam 1 and the flange 6. The crossbeam 1, lifting lug 2, reinforcing rib 3, and positioning sleeve 4 are all fixedly welded together. The connecting bolt 9 is threadedly connected to the sleeve 103 of the high- and low-pressure bypass valve. An adjustment sleeve 7 is sleeved on the outside of the connecting bolt 9, and the adjustment sleeve 7 is clamped between the flange 6 and the sleeve 103.

[0030] The high and low pressure bypass valve includes a valve body 101, a valve core assembly 102, a valve stem 104 and the sleeve 103. The sleeve 103 is installed inside the valve body 101, the valve core assembly 102 is installed inside the sleeve 103, and the valve core assembly 102 is fixedly connected to the valve stem 104.

[0031] The positioning sleeve 4 is processed with a plurality of equally spaced pin holes 10. At the same time, the connecting rod 5 is also processed with a plurality of equally spaced pin holes 10. The pins 8 are installed in the overlapping pin holes 10 of the positioning sleeve 4 and the connecting rod 5, and are distributed equally each day to accommodate valve stems 104 of different lengths.

[0032] When in use, the end of the valve stem 1045 passes through the valve body 101 and is fixedly connected to the connecting rod 5 by bolts. After the connecting bolt 9 passes through the flange 6 and the adjusting sleeve 7, it is threadedly connected to the end of the sleeve 103. The connecting rod 5 is connected to the positioning sleeve 4 by the pin 8. At this time, the valve core assembly 102 and the sleeve 103 form a whole. The horizontal force is provided by the lifting ear 2, and the valve core assembly 102 and the sleeve 103 can be taken out of the valve body cavity. After the valve core assembly 102, the valve stem 104 and the sleeve 103 are taken out from the valve body cavity as a whole, they are placed on a horizontal ground to ensure that the valve stem 104 is vertically upward. At this time, the valve core assembly 102 and the sleeve 103 can be safely disassembled to avoid damage to parts.

[0033] The cross sections of the positioning sleeve 4 and the connecting rod 5 are both rectangular, which can quickly and accurately locate the position of the pin hole 10 and facilitate the installation.

[0034] The flange 6 is connected to the connecting bolts 9 through the strip holes 11. There are multiple strip holes 11, which are arranged in a circular array with the center of the flange 6 as the center, so as to be suitable for guide ribs on flanges 6 of different lengths. The installation position of the connecting bolts 9 can be adjusted according to the actual size of the sleeve 103. The strip holes 11 are used to adapt to sleeves of different sizes.

[0035] A plurality of adjusting sleeves 7 form a group, and a group of adjusting sleeves 7 contains a plurality of adjusting sleeves 7 of different lengths for adjusting the installation position of the flange 6 .

[0036] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutations and combinations. Therefore, the present invention will no longer describe the technical solutions after permutations and combinations one by one, but it should be understood that the technical solutions after permutations and combinations have been disclosed by the present invention.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tool for disassembling the valve core assembly of a high- and low-pressure bypass valve, characterized by: The invention comprises a crossbeam (1), a lifting lug (2), a positioning sleeve (4), a connecting rod (5), a flange (6), a pin (8) and a connecting bolt (9), wherein the crossbeam (1) is provided with a lifting lug (2), a flange (6) is fixedly installed on one side of the crossbeam (1), a positioning sleeve (4) is fixedly installed on the flange (6), a connecting rod (5) is slidably installed inside the positioning sleeve (4), and the two are fixedly connected by the pin (8), and a connecting bolt (9) is provided on the flange (6).

2. The valve core assembly disassembly tool for a high- and low-pressure bypass valve according to claim 1, characterized in that: The connecting bolt (9) is threadedly connected to the sleeve (103) of the high and low pressure bypass valve. An adjusting sleeve (7) is sleeved on the outside of the connecting bolt (9), and the adjusting sleeve (7) is clamped between the flange (6) and the sleeve (103).

3. The valve core assembly disassembly tool for a high- and low-pressure bypass valve according to claim 2, characterized in that: A reinforcing rib (3) is also fixedly provided between the crossbeam (1) and the flange (6).

4. The valve core assembly disassembly tool for a high- and low-pressure bypass valve according to claim 3, characterized in that: The positioning sleeve (4) is machined with a plurality of equally spaced pin holes (10).

5. The valve core assembly disassembly tool for a high- and low-pressure bypass valve according to claim 4, characterized in that: The connecting rod (5) is processed with a plurality of equally spaced pin holes (10), and the pins (8) are installed in the pin holes (10) where the positioning sleeve (4) and the connecting rod (5) overlap.

6. The valve core assembly disassembly tool for a high- and low-pressure bypass valve according to claim 1, characterized in that: The cross sections of the positioning sleeve (4) and the connecting rod (5) are both rectangular.

7. A tool for disassembling a valve core assembly of a high- and low-pressure bypass valve according to claim 6, characterized in that: The flange (6) is connected to the connecting bolts (9) through the strip holes (11).

8. The valve core assembly disassembly tool for a high- and low-pressure bypass valve according to claim 7, characterized in that: The strip-shaped holes (11) are multiple in number and are arranged in a circular array with the center of the flange (6) as the center.

9. The valve core assembly disassembly tool for a high- and low-pressure bypass valve according to claim 3, characterized in that: The crossbeam (1), lifting lug (2), reinforcing rib (3) and positioning sleeve (4) are all fixedly connected by welding.

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