Valve seat mounting and dismounting device of plunger valve

Abstract

The utility model provides a valve seat mounting and dismounting device for a plunger valve. The valve seat mounting and dismounting device comprises a support; the first connecting plate is fixedly arranged at the first end of the support, and a first hole penetrating in the first direction is formed in the first connecting plate; the axial direction of the mounting and dismounting rod extends in the first direction, the second end of the mounting and dismounting rod is movably connected with the support in the first direction, and the first end of the mounting and dismounting rod extends towards the first hole; the second connecting plate is arranged at the first end of the mounting and dismounting rod in the axial direction, and the second connecting plate is configured to penetrate through the first hole; and the driver is used for driving the mounting and dismounting rod to move in the first direction relative to the support so as to drive the second connecting plate to move in the first direction, and the valve seat mounting and dismounting device of the plunger valve can complete stable, safe and rapid mounting and dismounting of the valve seat of the plunger valve.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial valves, and particularly relates to a valve seat installation and disassembly device for a plunger valve. Background Art

[0002] Plunger valves are widely used in the fields of coal-to-oil chemical industry, petrochemical industry, etc. They are mainly used to distribute and reverse the materials in pipelines, and at the same time have the functions of isolating and blocking the materials.

[0003] In particular, the valve seats of plunger valves in the fields of coal-to-oil chemical industry, petrochemical industry, etc. also have some characteristics, such as large volume, heavy weight, long height, high surface machining accuracy, and the existence of a sealing surface inside. During installation, it is required to be installed stably without being knocked, otherwise it is easy to cause the valve seat to be worn, knocked or even deformed. The sealing surface of the valve seat will also have micro-deformation due to the deformation of the valve seat, which will affect the sealing effect or even make it impossible to seal, and finally the valve cannot pass the factory test.

[0004] When the plunger valve operates in an environment with high temperature, high pressure, hydrogen-containing, high viscosity and easy-to-coke solid particle media conditions, it is easy to cause wear and erosion failure of the valve seat. For example, the five-way plunger valve at the lower part of the hot high-pressure separator of a direct coal liquefaction device is in a harsh working condition of high temperature, high pressure, hydrogen-containing and solid-containing for a long time. Solid materials are deposited, coked, worn and scoured in the valve seat flow channel, resulting in wear and even deformation of the valve seat, making it difficult to seal the valve. In this case, it needs to be disassembled and replaced in time, otherwise it will affect the stable operation of the device.

[0005] Therefore, designing a valve seat installation and disassembly device for a plunger valve is beneficial to improving the efficiency and stability of the installation, disassembly and replacement of the above-mentioned large plunger valve seats, and is beneficial to shortening the assembly and maintenance time of the plunger valve seats. Summary of the Utility Model

[0006] In view of some or all of the above technical problems existing in the prior art, the utility model provides a valve seat installation and disassembly device for a plunger valve. The valve seat installation and disassembly device for the plunger valve can complete the stable, safe and rapid installation and disassembly of the plunger valve seat, thereby helping to improve the efficiency and stability of the installation, disassembly and replacement of the plunger valve seat, and being beneficial to shortening the assembly and maintenance time of the plunger valve seat.

[0007] According to the utility model, there is provided a valve seat installation and disassembly device for a plunger valve, including:

[0008] A bracket,

[0009] A first connecting plate, the first connecting plate is fixedly arranged at the first end of the bracket, and a first hole penetrating in the first direction is arranged on the first connecting plate.

[0010] An installation and disassembly rod, the axial direction of the installation and disassembly rod extends along a first direction, and the second end is movably connected to the bracket in the first direction while the first end extends toward the first hole.

[0011] A second connecting plate, the second connecting plate is arranged at the first end of the axial direction of the installation and disassembly rod, and the second connecting plate is configured to be arranged through the first hole.

[0012] A driver, the driver is used to drive the installation and disassembly rod to move relative to the bracket in the first direction, thereby driving the second connecting plate to move in the first direction.

[0013] In one embodiment, the second end of the installation and disassembly rod and the driver are connected by a sliding screw drive, and a guiding assembly is arranged between the installation and disassembly rod and the bracket.

[0014] In one embodiment, the guiding assembly includes:

[0015] An anti-rotation plate fixedly sleeved on the outer wall of the installation and disassembly rod.

[0016] Anti-rotation rods arranged on both sides of the anti-rotation plate in a second direction, the anti-rotation rods extend along the second direction, and the second direction is perpendicular to the first direction.

[0017] Anti-rotation holes arranged on the bracket, the anti-rotation holes are configured as long strip holes extending along the first direction.

[0018] Wherein, each anti-rotation rod is inserted into the corresponding anti-rotation hole in a matching manner.

[0019] In one embodiment, the anti-rotation plate is sleeved on the outer wall of the installation and disassembly rod and is connected to the installation and disassembly rod by a key connection, and an anti-rotation pin is arranged between the anti-rotation plate and the installation and disassembly rod.

[0020] In one embodiment, the anti-rotation rod is arranged on the anti-rotation plate by a threaded connection.

[0021] In one embodiment, the second connecting plate is sleeved on the outer wall of the first end of the installation and disassembly rod, a first protrusion extending radially outward is arranged at the first end of the installation and disassembly rod, and a second protrusion extending radially inward is arranged on the inner wall of the second connecting plate, and the second protrusion sits on the first protrusion.

[0022] In one embodiment, a second hole penetrating in the first direction is arranged on the second connecting plate.

[0023] In one embodiment, a first connecting stud and a first connecting nut threadedly engaged with the first connecting stud are provided on the first connecting plate, and a second connecting stud and a second connecting nut threadedly engaged with the second connecting stud are provided on the second connecting plate.

[0024] In one embodiment, the bracket includes two vertical plates oppositely arranged in a second direction and a cross plate fixedly connected between the two vertical plates. The driver is fixed on the cross plate, and the first connecting plate is fixedly arranged between the vertical plates and is spaced from the cross plate in a first direction.

[0025] In one embodiment, the driver is configured as a bevel gear drive.

[0026] Compared with the prior art, the advantages of the present utility model are as follows: during use, the second connecting plate can be connected to the valve seat. The driver drives the installation and disassembly rod to move relative to the bracket in the first direction, thereby driving the second connecting plate to move in the first direction, and then driving the valve seat to move, completing the stable, safe and rapid installation and disassembly of the valve seat. Furthermore, it helps to improve the efficiency and stability of the installation, disassembly and replacement of the plunger valve seat, and is beneficial to shortening the assembly and maintenance time of the plunger valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings. In the drawings:

[0028] Figure 1 shows a valve seat installation and disassembly device for a plunger valve according to an embodiment of the present utility model;

[0029] Figure 2 shows a schematic connection diagram of the valve seat installation and disassembly device for a plunger valve according to an embodiment of the present utility model with the valve body and valve seat of the plunger valve;

[0030] Figure 3 is a schematic diagram of the completed installation state in the application of a valve seat installation and disassembly device for a plunger valve, taking a five-way plunger valve as an example;

[0031] Figure 4 is a schematic diagram of the completed disassembly state in the application of a valve seat installation and disassembly device for a plunger valve, taking a five-way plunger valve as an example.

[0032] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the technical solutions and advantages of the present utility model clearer and more understandable, the exemplary embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than an exhaustive list of all embodiments. And without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0034] An embodiment of the present utility model provides a valve seat installation and disassembly device 100 for a plunger valve. As Figure 1 and 2 shown, the valve seat installation and disassembly device 100 for the plunger valve includes a bracket 4, a first connecting plate 14, an installation and disassembly rod 3, a second connecting plate 9, and a driver 1. Among them, the bracket 4 mainly plays a role of basic support. The first connecting plate 14 is fixedly arranged at the first end of the bracket 4 (in Figure 1 , the first end is consistent with the lower end). The first connecting plate 14 is mainly used to connect the valve housing 201 of the plunger valve 200, and can also play a role in strengthening the bracket 4. A first hole 15 penetrating in the first direction is provided on the first connecting plate 14, which is mainly used for the second connecting plate 9 to pass through. The axial direction of the installation and disassembly rod 3 extends along the first direction, and the second end (in Figure 1 , the second end is consistent with the upper end) is movably connected to the bracket 4 in the first direction (in Figure 1 , the first direction is consistent with the up and down direction), and the first end extends towards the first hole 15. The second connecting plate 9 is arranged at the first end of the axial direction of the installation and disassembly rod 3 and is used to connect with the valve seat 201 of the plunger valve. The driver 1 is used to drive the installation and disassembly rod 3 to move relative to the bracket 4 in the first direction and drive the second connecting plate 9 to move in the first direction.

[0035] In a specific embodiment, the second end of the installation and disassembly rod 3 and the driver 1 are connected by a sliding screw drive. And a guiding assembly is arranged between the installation and disassembly rod 3 and the bracket 4. That is to say, in the present application, the installation and disassembly rod 3 is driven to move along its own axial direction in the way of screw drive.

[0036] Specifically, the second end of the installation and disassembly rod 3 adopts a trapezoidal thread, and this setting has better transmission and force-bearing effects. The guiding assembly includes an anti-rotation plate 7, an anti-rotation rod 8, and an anti-rotation hole 16. Among them, the anti-rotation plate 7 is fixedly sleeved on the outer wall of the installation and disassembly rod 3. The anti-rotation rod 8 is arranged in the second direction of the anti-rotation plate 7 (in Figure 1In this case, the second direction is perpendicular to the first direction and is consistent with the radial direction of the installation and disassembly rod 3. On both sides, the anti-rotation rods 8 extend along the second direction. The anti-rotation holes 16 are provided on the bracket 4 and are elongated holes extending along the first direction. Each anti-rotation rod 8 is inserted into the corresponding anti-rotation hole 16 in a one-to-one correspondence. During the axial movement of the installation and disassembly rod 3 along its own axis, the anti-rotation rod 8 slides in the anti-rotation hole 16. Through the limitation of the anti-rotation hole 16 on the anti-rotation rod 8, the anti-rotation limitation and guidance of the installation and disassembly rod 3 are carried out, thereby maintaining the stable operation of the installation and disassembly rod 3.

[0037] Preferably, the anti-rotation plate 7 is sleeved on the outer wall of the installation and disassembly rod 3 and is connected to the installation and disassembly rod 3 through a key 5. The key 5 limits the relative circumferential position between the installation and disassembly rod 3 and the anti-rotation plate 7, avoiding the rotation of the installation and disassembly rod 3 relative to the anti-rotation plate 7. In addition, anti-rotation pins 6 are also provided on the anti-rotation plate 7 and the installation and disassembly rod 3. The radial direction of the anti-rotation pin 6 extends along the second direction, so that the anti-rotation pin 6 passes through the anti-rotation plate 7 and is inserted into the installation and disassembly rod 3. By providing the anti-rotation pins 6, the circumferential position between the installation and disassembly rod 3 and the anti-rotation plate 7 is further limited, and the axial position between the installation and disassembly rod 3 and the anti-rotation plate 7 is also limited, making the installation and disassembly rod 3 and the anti-rotation plate 7 fixed.

[0038] The anti-rotation rod 8 is connected to the anti-rotation plate 7 by a threaded connection. This setting is simple and easy to implement. In particular, the disassembly or installation of the anti-rotation rod 8 and the anti-rotation plate 7 can be conveniently completed, improving the operation efficiency.

[0039] The second connecting plate 9 is sleeved on the outer wall of the first end of the installation and disassembly rod 3. A first protrusion 17 extending radially outward is provided at the first end of the installation and disassembly rod 3. At the same time, a second protrusion 18 extending radially inward is provided on the inner wall of the second connecting plate 9. The second protrusion 18 sits on the first protrusion 17. This setting makes the second connecting plate 9 and the installation and disassembly rod 3 have an axial hole fit, which helps to strictly control the clearance size. In particular, through the clamping fit of the second protrusion 18 and the first protrusion 17 in the axial direction, the installation of the second connecting plate 9 and the installation and disassembly rod 3 can be positioned. Furthermore, the above setting can effectively ensure the connection stability between the second connecting plate 9 and the installation and disassembly rod 3, and thus ensure the stability and non-shaking during the installation and disassembly of the valve seat 201.

[0040] Preferably, a second hole (not shown in the figure) penetrating in the first direction is provided on the second connecting plate 9. For example, the second hole can be one or more. The first hole can be used as an observation hole for observing the internal situation of the valve body 202 during the disassembly and installation of the valve seat. It is easy to understand that the setting position, the number of the second holes, and the shape of the second holes can all be adjusted according to the actual situation.

[0041] The first connecting stud 12 and the first connecting nut 13 are arranged on the first connecting plate 14. By arranging the first connecting stud 12 and the first connecting nut 13, the detachable connection between the valve seat installation and disassembly device of the plunger valve and the valve body 202 can be facilitated. Meanwhile, the second connecting stud 11 and the second connecting nut 10 are arranged on the second connecting plate 9. The second connecting stud 11 and the second connecting nut 10 are used for the detachable connection between the valve seat installation and disassembly device of the plunger valve and the valve seat 201.

[0042] The bracket 4 includes a vertical plate 19 and a horizontal plate 20. Among them, there are two vertical plates 19, which are oppositely arranged in the second direction. The horizontal plate 20 is fixedly connected between the two vertical plates 19. It can be seen that the general structure of the bracket 4 is in the shape of a "door" - shaped frame. The anti - rotation holes 16 are mainly arranged on the vertical plate 19. In addition, the first connecting plate 14 is fixedly arranged between the two vertical plates 19. The first connecting plate 14 is parallel to the horizontal plate 20 and is spaced from the horizontal plate 20 in the first direction. A driver 1 is arranged on the horizontal plate 20, for example, the driver 1 is arranged on the horizontal plate 20 through the connecting bolt 2. This structure is simple and easy to implement.

[0043] In addition, the driver 1 is configured as a bevel gear drive. This setting can accurately control the installation and disassembly process, and can sense in real - time whether there is a jamming phenomenon during the installation and disassembly process of the valve seat 201, and timely capture abnormal states during installation and disassembly. The driver 1 can be configured manually. For example, a handwheel 21 is arranged on it. During use, by rotating the handwheel 21, the rotation is transmitted to the bevel gear drive, and the bevel gear converts the rotation around the second direction into the rotation around the first direction, thereby driving the installation and disassembly rod 3 to move along the first direction.

[0044] Next, according to Figures 1 to 4Describe in detail the application of the valve seat installation and disassembly device for the plunger valve during the installation process. (1) Install the first connecting plate 14 at the first end of the bracket 4, such that the first connecting plate 14 is parallel to the cross plate 20 and is spaced in the first direction. Additionally, fixedly connect the driver 1 and the bracket 4 through the connecting bolt 2; (2) Sleeve the second connecting plate 9 on the lower end of the installation and disassembly rod 3, and the second protruding body 18 and the first protruding body 17 are in axial clamping fit; (3) Install the key 5 in the keyway of the installation and disassembly rod 3; (4) Fix the anti-rotation plate 7 to the installation and disassembly rod 3 through the anti-rotation pin 6; (5) Screw the installation and disassembly rod 3 and the parts already installed thereon into the driver 1 through the installation and disassembly rod 3, such that the position of the second connecting plate 9 is higher than the lower end face of the first connecting plate 14; (6) Screw the two anti-rotation rods 8 into the threaded holes on both sides of the anti-rotation plate 7 respectively; (7) Connect and fix the valve seat 201 to be installed to the second connecting plate 9 through the second connecting stud 11 and the second connecting nut 10; (8) Rotate the handwheel 21 of the driver 1 to lift the valve seat 201 until the lower end face of the valve seat 201 is higher than the lower end face of the first connecting plate 14; (9) Move the valve seat installation and disassembly device of the plunger valve to drive the valve seat 201 to be installed to move, place the lower end face of the first connecting plate 14 on the valve body 202, note that the outlet hole of the valve seat 201 is aligned with the outlet of the valve body 202, and then use the first connecting stud 12 and the first connecting nut 13 to fasten the first connecting plate 14 and the valve body 202; (10) Slowly rotate the handwheel 21 of the driver 1 to drive the installation and disassembly rod 3 to drive the second connecting plate 9 and then drive the valve seat 201 to descend until it fits with the valve body 202, and the installation is completed, and the state is as Figure 3 shown.

[0045] The following is based on Figures 1 to 4Describe in detail the application of the valve seat installation and disassembly device of the plunger valve in the disassembly process. (1) Install the first connecting plate 14 at the first end of the bracket 4 so that the first connecting plate 14 is parallel to the cross plate 20 and spaced apart in the first direction. In addition, fix the driver 1 and the bracket 4 by the connecting bolt 2; (2) Sleeve the second connecting plate 9 on the lower end of the installation and disassembly rod 3, and the second protruding body 18 and the first protruding body 17 are in axial clamping fit; (3) Install the key 5 in the keyway of the installation and disassembly rod 3; (4) Fix the anti-rotation plate 7 to the installation and disassembly rod 3 through the anti-rotation pin 6; (5) Insert the installation and disassembly rod 3 and the parts already installed thereon into the driver through the installation and disassembly rod 3 so that the position of the second connecting plate 9 is higher than the lower end surface of the first connecting plate 14; (6) Screw the two anti-rotation rods 8 into the threaded holes on both sides of the anti-rotation plate 7 respectively; (7) Place the lower end surface of the first connecting plate 14 on the valve body 202, and then use the first connecting stud 12 and the first connecting nut 13 to fasten the first connecting plate 14 and the valve body 202; (8) Rotate the handwheel 21 of the driver 1 to lower the second connecting plate 9 until it fits the valve body 202; (9) Connect and fix the valve seat 201 to the second connecting plate 9 through the second connecting stud 11 and the second connecting nut 10; (10) Slowly rotate the handwheel 21 of the driver 1 to make the installation and disassembly rod 3 drive the second connecting plate 9 and then drive the valve seat 201 to rise until the valve seat 201 is lifted to specifically as Figure 4 the state, and the disassembly is completed.

[0046] Figure 3 and 4 FIG. shows an embodiment in which the valve seat installation and disassembly device of the plunger valve is applied to a five-way plunger valve. It is easy to understand that the valve seat installation and disassembly device of the plunger valve can also be applied to other similar types of plunger valves.

[0047] It can be seen that the valve seat installation and disassembly device of the plunger valve in the present application solves the problem that there is no installation and disassembly tool for the valve seat of the plunger valve, resulting in inability to install and disassemble; the lengths of the bracket and the installation and disassembly rod of the valve seat installation and disassembly device of the plunger valve in the present application in the first direction, and the screw drive connection can provide sufficient force and stroke to ensure the success of installation and disassembly. Even if the valve seat of the plunger valve is large in volume, heavy in weight or has a large disassembly resistance after deformation, the installation and disassembly can still be completed through the valve seat installation and disassembly device of the plunger valve in the present application; the guiding component can effectively ensure the smooth operation of the installation and disassembly rod, thereby solving the problem that the valve seat of the plug valve requires smooth installation without bumping, resulting in difficult installation and disassembly; the valve seat installation and disassembly device of the plunger valve is positioned through the bolt holes during installation, with simple operation and flexible use.

[0048] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and / or modifications that fall within the scope of the present utility model. Any changes and / or modifications made in accordance with the embodiments of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A valve seat installation and disassembly device for a plunger valve, characterized in that Comprising: Bracket First connecting plate, the first connecting plate is fixedly arranged at the first end of the bracket, and a first hole penetrating in the first direction is arranged on the first connecting plate. Installation and disassembly rod, the axial direction of the installation and disassembly rod extends along the first direction, and the second end is movably connected with the bracket in the first direction while the first end extends towards the first hole. Second connecting plate, the second connecting plate is arranged at the first end of the axial direction of the installation and disassembly rod, and the second connecting plate is configured to be arranged through the first hole. Driver, the driver is used to drive the installation and disassembly rod to move relative to the bracket in the first direction, thereby driving the second connecting plate to move in the first direction.

2. The valve seat installation and disassembly device of the plunger valve according to claim 1, characterized in that The second end of the installation and disassembly rod and the driver are connected by a sliding screw drive, and a guiding component is arranged between the installation and disassembly rod and the bracket.

3. The valve seat installation and disassembly device for the plunger valve according to claim 2, characterized in that, The guiding component includes: Anti-rotation plate fixedly sleeved on the outer wall of the installation and disassembly rod. Anti-rotation rods arranged on both sides of the anti-rotation plate in the second direction, the anti-rotation rods extend along the second direction, and the second direction is perpendicular to the first direction. Anti-rotation holes arranged on the bracket, the anti-rotation holes are configured as long strip holes extending along the first direction. Wherein, each of the anti-rotation rods is inserted into the corresponding anti-rotation hole in a matching manner.

4. The valve seat installation and disassembly device of the plunger valve according to claim 3, characterized in that, The anti-rotation plate is sleeved on the outer wall of the installation and disassembly rod and is key-connected with the installation and disassembly rod, and an anti-rotation pin is arranged between the anti-rotation plate and the installation and disassembly rod.

5. The valve seat installation and disassembly device of the plunger valve according to claim 3, characterized in that, The anti-rotation rods are arranged on the anti-rotation plate by threaded connection.

6. The valve seat installation and disassembly device for the plunger valve according to any one of claims 1 to 5, characterized in that, The second connecting plate is sleeved on the outer wall of the first end of the installation and disassembly rod, a first convex body extending radially outwards is arranged at the first end of the installation and disassembly rod, and a second convex body extending radially inwards is arranged on the inner wall of the second connecting plate, and the second convex body sits on the first convex body.

7. The valve seat installation and disassembly device for the plunger valve according to any one of claims 1 to 5, characterized in that, A second hole penetrating in the first direction is arranged on the second connecting plate.

8. The valve seat installation and disassembly device for the plunger valve according to any one of claims 1 to 5, characterized in that, A first connecting stud and a first connecting nut threadedly matched with the first connecting stud are arranged on the first connecting plate, and a second connecting stud and a second connecting nut threadedly matched with the second connecting stud are arranged on the second connecting plate.

9. The valve seat installation and disassembly device for a plunger valve according to any one of claims 1 to 5, characterized in that, The bracket includes two vertical plates oppositely arranged in the second direction and a cross plate fixedly connected between the two vertical plates, the driver is fixed on the cross plate, and the first connecting plate is fixedly arranged between the vertical plates and is arranged at an interval from the cross plate in the first direction.

10. The valve seat installation and disassembly device for a plunger valve according to any one of claims 1 to 5, characterized in that, The driver is configured as bevel gear transmission.

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