Installation tool for sealing ring of hydraulic servo-motor of high-side attemperation water adjusting door

Abstract

The utility model provides a mounting tool for a sealing ring of a hydraulic servo-motor of a high side attemperation water adjusting door, which comprises a guide sleeve and a pressing sleeve, the guide sleeve is of a circular truncated cone-shaped structure, and the maximum outer diameter of the guide sleeve is not smaller than the outer diameter of the head of a piston; and a conical cavity is formed in the pressing sleeve. The piston sealing device is simple in structure, the inner diameter of the sealing ring is gradually enlarged through the circular-truncated-cone-shaped guide sleeve, the sealing ring can be evenly installed in a groove in the head of a piston in a transition mode, the problem that the sealing ring is damaged when tools such as a screwdriver are used for auxiliary installation is solved, the installed sealing ring is pressed into the groove through the pressing sleeve, and the sealing ring is prevented from being damaged. And the conditions of loose matching, easy falling and untight sealing are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of seal ring assembly, in particular to an installation tool for a seal ring of a high bypass desuperheating water regulating valve oil motor. Background Art

[0002] An oil motor is usually equipped on the high bypass desuperheating water regulating valve of a thermal power plant. The piston head seal ring of the oil motor equipment will wear during long-term operation. If the seal ring is not replaced and cleaned regularly, the defect of poor seal of the seal ring will occur.

[0003] The seal ring is usually installed in the groove of the piston head. At present, the work of assembling the seal ring into the groove of the piston head is manually operated. It is more difficult to install the seal ring manually. In actual work, some workers choose to insert a screwdriver into the seal ring to stretch the seal ring to temporarily expand the inner diameter size of the seal ring.

[0004] However, when the existing workers choose to use a screwdriver or other tools to assist in installing the seal ring, it is easy to damage the seal ring, and the installed seal ring fits loosely in the groove and is easy to fall off, resulting in poor sealing. Content of the Utility Model

[0005] The purpose of the utility model is to provide an installation tool for a seal ring of a high bypass desuperheating water regulating valve oil motor to solve the above technical problems.

[0006] The utility model provides an installation tool for a seal ring of a high bypass desuperheating water regulating valve oil motor, which includes a guiding sleeve and a pressing sleeve. The guiding sleeve is in a frustum shape, and the maximum outer diameter of the guiding sleeve is not less than the outer diameter of the piston head; a conical cavity is arranged in the pressing sleeve.

[0007] Furthermore, a cavity is arranged in the guiding sleeve.

[0008] Furthermore, the cavity is sleeved outside the piston rod part.

[0009] Furthermore, the minimum inner diameter of the cavity is not less than the outer diameter of the piston rod part.

[0010] Furthermore, the cavity is in a cylindrical shape or a frustum shape.

[0011] Furthermore, the minimum inner diameter of the conical cavity is not greater than the outer diameter of the piston head, and the minimum inner diameter of the conical cavity is not less than the outer diameter of the piston rod part.

[0012] Furthermore, the maximum inner diameter of the conical cavity is not less than the outer diameter of the seal ring.

[0013] Furthermore, the pressing sleeve is in a cylindrical shape or a frustum shape.

[0014] Further, the guiding sleeve and the pressing sleeve are made of metal materials.

[0015] The structure of the utility model is simple. The inner diameter of the sealing ring is gradually enlarged by the frustum-shaped guiding sleeve, so that the sealing ring can be evenly and transitionally installed into the groove on the piston head, avoiding the problem of damage to the sealing ring caused by using tools such as screwdrivers for auxiliary installation. By setting the pressing sleeve, the installed sealing ring is pressed into the groove, preventing the problems of loose fit, easy falling off and poor sealing. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of the guiding sleeve of the utility model;

[0018] Figure 2 One of the application schematic diagrams of the utility model;

[0019] Figure 3 Another application schematic diagram of the utility model;

[0020] Figure 4 Schematic diagram of the pressing sleeve of the utility model;

[0021] Figure 5 Schematic diagram of the structure of Embodiment 2 of the utility model;

[0022] Figure 6 Schematic diagram of the structure of the hinge part of Embodiment 2 of the utility model;

[0023] Explanation of the reference numerals in the drawings:

[0024] In the figure: 1 - guiding sleeve, 11 - cavity, 2 - pressing sleeve, 21 - conical cavity, 31 - piston head, 32 - piston rod part, 33 - groove, 4 - sealing ring, 5 - positioning sleeve, 51 - disassembly end, 52 - connecting part, 6 - rotating sleeve, 61 - handle, 71 - sliding ring, 72 - first hinge rod, 73 - second hinge rod, 74 - pushing block, 75 - spring, 81 - hinge sleeve, 82 - hinge shaft, 83 - notch; Detailed Embodiments

[0025] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Embodiment 1

[0029] As Figures 1 - 4 shown:

[0030] An installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve includes a guide sleeve 1. The guide sleeve 1 is in a frustum shape, and the maximum outer diameter of the guide sleeve 1 is not less than the outer diameter of the piston head 31. In this embodiment, the maximum outer diameter of the guide sleeve 1 is the same as the outer diameter of the piston head 31.

[0031] A cavity 11 is formed inside the guide sleeve 1. The cavity 11 is sleeved outside the piston rod part 32, and the minimum inner diameter of the cavity 11 is not less than the outer diameter of the piston rod part 32.

[0032] In this embodiment, the cavity 11 is cylindrical, and it can also be set in a frustum shape.

[0033] An installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve further includes a pressing sleeve 2, and a conical cavity 21 is formed in the pressing sleeve 2.

[0034] The minimum inner diameter of the conical cavity 21 is not greater than the outer diameter of the piston head 31, and the minimum inner diameter of the conical cavity 21 is not less than the outer diameter of the piston rod portion 32.

[0035] The maximum inner diameter of the conical cavity 21 is not less than the outer diameter of the seal ring 4.

[0036] In this embodiment, the pressing sleeve 2 is of a cylindrical structure and can also be set to a frustum-shaped structure.

[0037] The guiding sleeve 1 and the pressing sleeve 2 are made of aluminum alloy material, and other metal materials can also be selected.

[0038] When using the guiding sleeve 1 in this embodiment, first, the guiding sleeve 1 is sleeved on the piston rod portion 32, and the cavity 11 cooperates with the piston rod portion 32 to position and guide the piston; then, the seal ring 4 is sleeved on the narrow end of the guiding sleeve 1, and the seal ring 4 is manually pushed downward, and the seal ring 4 expands uniformly; finally, the seal ring 4 falls into the groove 33 of the piston head 31.

[0039] When using the guiding sleeve 1 in this embodiment, first, the preliminarily installed seal ring 4 and the piston are separated from the guiding sleeve 1, then the pressing sleeve 2 is sleeved on the piston rod portion 32, and the piston head 31 falls into the conical cavity 21. The pressing sleeve 2 is manually pressed downward, and the pressing sleeve 2 slides relative to the piston. The inner wall of the conical cavity 21 squeezes the seal ring 4, so that the seal ring 4 is pressed tightly, further enhancing the contact between the seal ring 4 and the groove 33.

[0040] In this embodiment, small refrigeration sheets can also be embedded on the inner wall of the conical cavity 21 to improve the contact between the seal ring 4 and the groove 33 through the principle of thermal expansion and contraction.

[0041] The utility model has a simple structure. The inner diameter of the seal ring 4 is gradually enlarged by the frustum-shaped guiding sleeve 1, so that the seal ring 4 can be installed into the groove 33 of the piston head 31 evenly and smoothly, avoiding the problem of damage to the seal ring 4 caused by using tools such as screwdrivers for auxiliary installation. By setting the pressing sleeve 2, the installed seal ring 4 is pressed into the groove 33 to prevent the problems of loose fit, easy falling off and poor sealing.

[0042] Embodiment 2

[0043] As Figure 5 and Figure 6 shown, a positioning sleeve 5 is installed above the guiding sleeve 1, and the positioning sleeve 5 is detachably connected to the guiding sleeve 1.

[0044] AsFigure 5 As shown, a threaded hole is provided at the top port of the cavity 11 in the guiding sleeve 1, and an external thread matching the threaded hole is provided at the dismounting end 51 at the bottom end of the positioning sleeve 5. The positioning sleeve 5 and the guiding sleeve 1 are threadedly connected.

[0045] The top of the positioning sleeve 5 is a connecting portion 52. A rotating sleeve 6 is sleeved on the positioning sleeve 5, and the rotating sleeve 6 is threadedly connected to the positioning sleeve 5 at the connecting portion 52.

[0046] A push rod mechanism and a handle 61 are installed on the rotating sleeve 6. The handle 61 is fixedly connected to the rotating sleeve 6 or detachably connected by threads.

[0047] The push rod mechanism includes a sliding ring 71. A first articulated rod 72 is installed on the outer side surface of the sliding ring 71. One end of the first articulated rod 72 far from the sliding ring 71 is articulated and connected to a second articulated rod 73. One end of the second articulated rod 73 far from the first articulated rod 72 is connected to a pushing block 74.

[0048] A spring 75 is provided between the first articulated rod 72 and the second articulated rod 73. The two ends of the spring 75 are respectively connected to the outer peripheral surfaces of the first articulated rod 72 and the second articulated rod 73.

[0049] The spring 75 is arranged in the space with a smaller included angle between the first articulated rod 72 and the second articulated rod 73.

[0050] The side surface of the pushing block 74 is set as an arc surface that fits the outer peripheral surface of the guiding sleeve 1, and the bottom surface of the pushing block 74 is set as a horizontal plane.

[0051] As Figure 6 shown, the first articulated rod 72 and the second articulated rod 73 are connected by an articulated sleeve 81 and an articulated shaft 82.

[0052] The first articulated rod 72 is fixedly connected to the articulated sleeve 81. An articulated cavity is provided in the articulated sleeve 81. The articulated shaft 82 is rotatably connected to the articulated cavity. A notch 83 is provided on the outer peripheral surface of the articulated sleeve 81. The height at which the notch 83 is provided is less than the height of the rotating shaft. The second articulated rod 73 is connected to the articulated shaft 82 at the notch 83. The second articulated shaft 82 can rotate within the range of the provided notch 83, and the edge of the notch 83 limits the second articulated rod 73.

[0053] By providing the articulated sleeve 81 and the articulated shaft 82, it can not only ensure that the rotating sleeve 6 provides a driving force for the pushing block 74, but also ensure the articulated connection between the first articulated rod 72 and the second articulated rod 73.

[0054] When this embodiment is in operation, first disassemble the positioning sleeve 5 and the guiding sleeve 1. Put the sealing ring 4 on the narrow end of the guiding sleeve 1, install the positioning sleeve 5 on the top of the guiding sleeve 1, and then put the installed guiding sleeve 1 and positioning sleeve 5 on the piston rod part 32. The piston head 31 is located below the guiding sleeve 1 and contacts the bottom surface of the guiding sleeve 1. Adjust the position of the pushing block 74 so that the side surface of the pushing block 74 fits the outer peripheral surface of the guiding sleeve 1, and the horizontal plane at the bottom of the pushing block 74 contacts the top surface of the sealing ring 4. The staff holds the handle 61 and rotates it. The connection between the rotating sleeve 6 and the positioning sleeve 5 is in threaded connection. The rotating sleeve 6 slides relatively on the positioning sleeve 5, and the rotating sleeve 6 drives the push rod mechanism to gradually move downward. The sliding ring 71 of the push rod mechanism is slidably connected to the rotating sleeve 6 and will not rotate along with it. During the downward movement of the rotating sleeve 6, the second hinged rod 73 and the pushing block 74 are gradually pushed downward through the sliding ring 71 and the first hinged rod 72, thereby realizing the multi-point pushing block 74 to push the sealing ring 4 downward until the sealing ring 4 falls into the groove 33 of the piston head 31.

[0055] In this embodiment, a spring 75 is provided, which can ensure that the pushing block 74 always fits the outer peripheral surface of the guiding sleeve 1. By setting the notch 83 and the spring 75, it effectively prevents the second hinged rod 73 from rotating excessively and avoids the situation where the pushing block 74 is separated from the guiding sleeve 1 and the sealing ring 4.

[0056] In this embodiment, the sliding ring 71 of the push rod mechanism is slidably connected to the rotating sleeve 6. It is also possible to fixedly connect the sliding block to the rotating sleeve 6, and then the first hinged rod 72 is fixedly connected to the rotating sleeve 6. When the rotating sleeve 6 rotates, the push rod mechanism rotates along with it, and the push rod mechanism can continuously push the sealing ring 4 downward to ensure that the sealing ring 4 is uniformly stressed.

[0057] In this embodiment, the second hinged rod 73 can also be hinged to the pushing block 74, and a torsion spring is provided at the hinge between the second hinged rod 73 and the pushing block 74 to further improve the contact stability between the pushing block 74 and the guiding sleeve 1.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A tool for installing the sealing ring of the oil motor of the high bypass cooling water adjustment door, characterized in that It comprises a guide sleeve and a pressing sleeve. The guide sleeve is a truncated cone structure. The maximum outer diameter of the guide sleeve is not less than the outer diameter of the piston head. A conical cavity is provided in the pressing sleeve.

2. The installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve according to claim 1 is characterized in that: A cavity is provided in the guide sleeve.

3. The installation tool for the oil motor seal ring of the high bypass cooling water regulating valve according to claim 2 is characterized in that: The cavity is sleeved on the outside of the piston rod part.

4. The installation tool for the oil motor seal ring of the high bypass cooling water regulating valve according to claim 2 is characterized in that: The minimum inner diameter of the cavity is not less than the outer diameter of the piston rod portion.

5. The installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve according to claim 2 is characterized in that: The cavity is cylindrical or truncated cone shaped.

6. The installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve according to claim 1 is characterized in that: The minimum inner diameter of the tapered cavity is not greater than the outer diameter of the piston head, and the minimum inner diameter of the tapered cavity is not less than the outer diameter of the piston rod.

7. The installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve according to claim 1 is characterized in that: The maximum inner diameter of the tapered cavity is not less than the outer diameter of the sealing ring.

8. The installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve according to claim 1 is characterized in that: The compression sleeve is a cylindrical structure or a truncated cone structure.

9. The installation tool for the oil motor seal ring of the high bypass desuperheating water regulating valve according to claim 1 is characterized in that: The guide sleeve and the pressing sleeve are made of metal material.

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