Tool for overhauling butterfly valve hydraulic servo-motor

Abstract

The utility model relates to a tool for overhauling a butterfly valve hydraulic servo-motor, the hydraulic servo-motor comprises a shell and a piston rod, the movable end of the piston rod is fixedly sleeved with a mounting block, the tool for overhauling comprises a connecting rod and an abutting part, the connecting rod is erected on the shell, the abutting part is arranged at at least one end of the connecting rod, and the piston rod is arranged on the connecting rod. The abutting part is provided with a first end and a second end which are oppositely arranged in the axial direction of the piston rod, and the first end and the second end abut against the opposite faces of the shell and the installation block respectively so as to limit shrinkage of the piston rod. By means of the technical scheme, the tool for overhauling can prevent the butterfly valve from being accidentally closed, a heat supply steam turbine unit is prevented from being shut down, and economic benefits and livelihood heating of a power plant are guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of oil motor auxiliary equipment, and in particular to a tool for repairing a butterfly valve oil motor. Background Art

[0002] Butterfly valves, as regulating elements in the heating steam turbine units of thermal power plants, are used to regulate flow in thermal pipelines. In related technologies, an oil motor is required to adjust the butterfly valve's opening to meet the required opening requirements under varying loads. However, when the oil motor leaks, the inlet and outlet valves must be closed for maintenance. Once the inlet valve is closed, the butterfly valve also closes due to the spring action, causing the heating steam turbine unit to shut down, impacting the economic benefits of the power plant and heating for the public. Utility Model Content

[0003] The purpose of the present disclosure is to provide a butterfly valve oil motor maintenance tool, which can prevent the butterfly valve from closing accidentally, avoid the shutdown of the heating turbine unit, and ensure the economic benefits of the power plant and heating for the people's livelihood.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a tool for repairing a butterfly valve oil motor, wherein the oil motor includes a housing and a piston rod, and the movable end of the piston rod is fixedly sleeved with a mounting block, and the repair tool includes a connecting rod and an abutment portion, wherein the connecting rod is mounted on the housing, and at least one end of the connecting rod is provided with the abutment portion, and the abutment portion has a first end and a second end which are arranged opposite to each other along the axial direction of the piston rod, and the first end and the second end respectively abut against the opposite side of the housing and the mounting block to limit the contraction of the piston rod.

[0005] Optionally, the connecting rod is mounted on the top of the shell, the number of the abutting portions is two, and the two abutting portions are symmetrically connected to both ends of the connecting rod.

[0006] Optionally, the connecting rod is configured as a U-shaped rod, and an open side of the U-shaped rod is used for inserting the piston rod.

[0007] Optionally, there are multiple connecting rods, and the multiple connecting rods are arranged at intervals along the axial direction of the piston rod.

[0008] Optionally, the abutment portion is configured as a push rod, which is parallel to the piston rod and spaced apart from the piston rod.

[0009] Optionally, the maintenance tool further includes an extension portion, and the extension portion is detachably mounted on at least one end of the push rod.

[0010] Optionally, the extension portion is constructed as a sleeve, and the sleeve is sleeved on at least one end of the push rod. A first disassembly structure is provided on one of the sleeve and the push rod, and a second disassembly structure is provided on the other.

[0011] Optionally, the push rod is cylindrical, the sleeve is annular, at least one end of the push rod is provided with an external thread section, the external thread section is used as the first disassembly structure, and one end of the sleeve has an internal thread section, the internal thread section is used as the second disassembly structure.

[0012] Optionally, the top rod is constructed as a metal rod.

[0013] Optionally, at least a portion of the interior of the push rod is constructed as a hollow structure.

[0014] Through the above technical solution, in the maintenance tool provided by the present invention, the connecting rod is mounted on the housing. In this way, before or after the oil inlet valve of the oil motor is closed, the staff only needs to directly mount the maintenance tool on the housing, which is simple and convenient to operate and has a fast response speed. In addition, the first end and the second end of the abutment portion respectively abut against the opposite side of the housing and the mounting block to limit the contraction of the piston rod. In this way, it can be ensured that the length of the piston rod after contraction is greater than or equal to the axial dimension of the abutment portion along the piston rod to prevent the butterfly valve from closing due to the contraction of the piston rod. In other words, the provision of the abutment portion can prevent the butterfly valve from closing accidentally, thereby ensuring the flow in the thermal pipeline, thereby avoiding the shutdown of the heating steam turbine unit and ensuring the economic benefits of the power plant.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0017] Figure 1 This is a partial schematic diagram of a tool for repairing a butterfly valve oil motor and an oil motor provided in an embodiment of the present disclosure;

[0018] Figure 2 It is a schematic diagram of a tool for repairing a butterfly valve oil motor provided in an embodiment of the present disclosure.

[0019] Description of Reference Numerals

[0020] 110 , housing; 120 , piston rod; 130 , mounting block; 200 , maintenance tool; 210 , connecting rod; 220 , abutment portion; 230 , external threaded section. DETAILED DESCRIPTION

[0021] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0022] In the present disclosure, unless otherwise specified, directional words such as "top" and "bottom" refer to the "top" and "bottom" of the present disclosure in the height direction when in use. In addition, the terms "first" and "second" used in the present disclosure are intended to distinguish one element from another and do not have sequentiality or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limiting the present disclosure.

[0023] According to the specific embodiment of the present disclosure, Figure 1 and Figure 2 As shown in the figure, a tool for repairing a butterfly valve oil motor is provided, which includes a housing 110 and a piston rod 120. The movable end of the piston rod 120 is fixedly sleeved with a mounting block 130. The repair tool 200 includes a connecting rod 210 and an abutment portion 220. The connecting rod 210 is mounted on the housing 110. At least one end of the connecting rod 210 is provided with an abutment portion 220. The abutment portion 220 has a first end and a second end that are oppositely arranged along the axial direction of the piston rod 120. The first end and the second end respectively abut against the opposite sides of the housing 110 and the mounting block 130 to limit the contraction of the piston rod 120.

[0024] Through the above technical solution, in the maintenance tool 200 provided by the present disclosure, the connecting rod 210 is mounted on the housing 110. In this way, before or after the oil inlet valve of the oil motor is closed, the staff only needs to directly mount the maintenance tool 200 on the housing 110, which is simple and convenient to operate and has a fast response speed. In addition, the first end and the second end of the abutment portion 220 respectively abut against the opposite side of the housing 110 and the mounting block 130 to limit the contraction of the piston rod 120. In this way, it can be ensured that the length of the piston rod 120 after contraction is greater than or equal to the axial dimension of the abutment portion 220 along the piston rod 120, so as to prevent the butterfly valve from closing due to the contraction of the piston rod 120. In other words, the provision of the abutment portion 220 can prevent the butterfly valve from closing accidentally, thereby ensuring the flow in the thermal pipeline, thereby avoiding the shutdown of the heating steam turbine unit and ensuring the economic benefits of the power plant.

[0025] It should be noted that the mounting block 130 may be a lug for a hydraulic motor. By abutting the first and second ends of the abutting portion 220 against the housing 110 and the opposite side of the lug, respectively, the piston rod 120 can be restricted from retracting. This eliminates the need for further modifications to the hydraulic motor and provides a wide range of applicability.

[0026] In the butterfly valve oil motor maintenance tool provided in the present disclosure, the abutment portion 220 and the connecting rod 210 can be constructed in any suitable manner. As an exemplary embodiment, refer to Figure 2 As shown in , the connecting rod 210 can be mounted on the top of the housing 110, and the number of the abutting portions 220 can be two, and the two abutting portions 220 can be symmetrically connected at both ends of the connecting rod 210. In this way, the two abutting portions 220 can ensure that the forces on both sides of the connecting rod 210 are balanced, which is beneficial to improving the stability of the maintenance tool 200. In addition, the two abutting portions 220 can simultaneously abut between the housing 110 and the mounting block 130, further ensuring the restraining effect of the abutting portions 220 on the piston rod 120, thereby improving the reliability of the maintenance tool 200.

[0027] In the butterfly valve oil motor maintenance tool provided in the present disclosure, the connecting rod 210 can be constructed in any suitable manner. As an exemplary embodiment, refer to Figure 2 As shown in , the connecting rod 210 can be constructed as a U-shaped rod, and the open side of the U-shaped rod can be used to insert the piston rod 120. In this way, when installing the maintenance tool 200, the open side of the U-shaped rod is directly aligned with the piston rod 120, and then the connecting rod 210 is mounted on the housing 110, which is convenient for assembly and disassembly. Among them, the U-shaped connecting rod 210 can include a horizontal rod section and two vertical rod sections. The horizontal rod section can be mounted above the housing 110, and the two vertical rod sections can be respectively located on opposite sides of the piston rod 120. In other embodiments, the connecting rod 210 can be constructed into other suitable shapes, which are not specifically limited by the present disclosure, such as an inverted V shape, etc. Alternatively, the middle portion of the connecting rod 210 can be constructed into a shape that adapts to the housing 110 to ensure the assembly stability between the connecting rod 210 and the housing 110, and the two ends of the connecting rod 210 can be constructed as vertical rod sections extending downward from the middle portion of the connecting rod 210.

[0028] In the butterfly valve oil motor maintenance tool provided in the present disclosure, the connecting rod 210 can be selected in any suitable number. As an exemplary embodiment, refer to Figure 2 As shown in , there can be multiple connecting rods 210, and the multiple connecting rods 210 can be arranged at intervals along the axial direction of the piston rod 120. Thus, compared to providing only one connecting rod 210, the provision of multiple connecting rods 210 can prevent the maintenance tool 200 from rotating around the horizontal rod section of the connecting rod 210, thereby ensuring the stability of the maintenance tool 200. In other embodiments, connecting plates can be used instead of the multiple connecting rods 210 to achieve the aforementioned purpose of ensuring the stability of the maintenance tool 200.

[0029] In the butterfly valve oil motor maintenance tool provided in the present disclosure, the abutment portion 220 can be constructed in any suitable manner. As an exemplary embodiment, refer to Figure 2 As shown in , the abutment portion 220 can be configured as a push rod, which can be parallel to the piston rod 120 and spaced apart from the piston rod 120. The push rod is arranged parallel to the piston rod 120 so that the direction of pressure exerted on both ends of the push rod coincides with the axis of the push rod, thereby preventing the push rod from rotating relative to the piston rod 120, thereby ensuring the reliability of the maintenance tool 200.

[0030] In the butterfly valve oil motor maintenance tool provided in the present disclosure, as an exemplary embodiment, the maintenance tool 200 may further include an extension portion, with the extension portion being detachably mounted on at least one end of the push rod. This extension portion can extend the length of the push rod. In other words, by installing the extension portion on the push rod, the degree of contraction of the piston rod 120 can be controlled, thereby controlling the opening of the butterfly valve. Therefore, by installing extension portions of different lengths on the push rod, the butterfly valve can be adjusted to different openings, allowing the maintenance tool 200 to meet the opening requirements of the butterfly valve under different loads, thus providing a wide range of applicability.

[0031] In the butterfly valve motor repair tool provided herein, the extension portion and the push rod can be mounted in any suitable manner. As an exemplary embodiment, the extension portion can be configured as a sleeve, and at least one end of the push rod can be sleeved with the sleeve. One of the sleeve and the push rod can be provided with a first detachable structure, and the other can be provided with a second detachable structure. In this way, the extension portion can be detachably mounted on the abutment portion 220 via the first and second detachable structures.

[0032] In the butterfly valve oil motor maintenance tool provided in the present disclosure, the first disassembly structure and the second disassembly structure can be constructed in any suitable manner. As an exemplary embodiment, refer to Figure 2 As shown in , the push rod can be constructed as a cylinder, the sleeve can be constructed as a circular ring, at least one end of the push rod can be provided with an external thread section 230, the external thread section 230 can be used as a first disassembly structure, and one end of the sleeve can have an internal thread section, the internal thread section can be used as a second disassembly structure. In this way, the installation of the abutment 220 and the sleeve can be completed only by rotation, and the disassembly and assembly are convenient. In addition, the engagement of the internal thread section and the external thread section 230 can ensure the reliability between the installed abutment 220 and the sleeve. In addition, the provision of the internal thread section and the external thread section 230 can achieve fine adjustment of the total length of the abutment 220 and the sleeve. Specifically, after the abutment 220 and the sleeve are installed, the external thread section 230 can be completely arranged in the internal thread section, or it can be partially arranged in the internal thread section.

[0033] In another exemplary embodiment, the first disassembly structure and the second disassembly structure can be constructed as a slot and a block, respectively. For example, at least one end of the abutment portion 220 can be provided with an L-shaped slot, and the L-shaped slot can include a first slot section arranged along the axial direction of the abutment portion 220 and a second slot section arranged along the circumference of the abutment portion 220, and the first slot section extends inwardly along the axial direction of the abutment portion 220 from one end of the abutment portion 220. The L-shaped slot can be used as the first disassembly structure, and a block can be formed at one end of the sleeve, and the block can extend from the first slot section into the slot and be limited to the second slot section. In this way, the installation of the abutment portion 220 and the sleeve can be completed by rotating and snapping, and disassembly and assembly are simple. In other embodiments, the first disassembly structure and the second disassembly structure can also be constructed in other suitable forms, and the present disclosure does not impose specific restrictions on this.

[0034] In the butterfly valve oil motor repair tool provided by the present disclosure, the push rod can be constructed as a metal rod. In this way, the structural strength of the push rod can be ensured to prevent the push rod from being crushed, thereby ensuring the reliability of the repair tool 200.

[0035] In the butterfly valve oil motor maintenance tool provided by the present disclosure, at least a portion of the interior of the push rod can be constructed as a hollow structure. For example, the push rod can be constructed as a tube. In this way, the weight of the push rod can be reduced, thereby reducing the weight of the maintenance tool 200 and facilitating operation by the operator.

[0036] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0037] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0038] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A tool for repairing a butterfly valve oil motor, the oil motor comprising a housing and a piston rod, the movable end of the piston rod being fixed with a mounting block, characterized in that: The maintenance tool includes a connecting rod and an abutment portion, the connecting rod is mounted on the housing, and the abutment portion is provided at at least one end of the connecting rod, the abutment portion having a first end and a second end arranged opposite to each other along the axial direction of the piston rod, the first end and the second end respectively abut against the opposite sides of the housing and the mounting block to limit the contraction of the piston rod.

2. The tool for repairing a butterfly valve oil motor according to claim 1, characterized in that: The connecting rod is mounted on the top of the shell, and the number of the abutting portions is two, and the two abutting portions are symmetrically connected to both ends of the connecting rod.

3. The tool for repairing a butterfly valve oil motor according to claim 2, characterized in that: The connecting rod is configured as a U-shaped rod, and an open side of the U-shaped rod is used for inserting the piston rod.

4. The tool for repairing a butterfly valve oil motor according to claim 3, characterized in that: There are multiple connecting rods, and the multiple connecting rods are arranged at intervals along the axial direction of the piston rod.

5. The tool for repairing a butterfly valve oil motor according to claim 4, characterized in that: The abutment portion is configured as a push rod, which is parallel to the piston rod and spaced apart from the piston rod.

6. The tool for repairing a butterfly valve oil motor according to claim 5, characterized in that: The maintenance tool further includes an extension portion, and the extension portion is detachably mounted on at least one end of the push rod.

7. The tool for repairing a butterfly valve oil motor according to claim 6, characterized in that: The extension portion is constructed as a sleeve, and at least one end of the push rod is sleeved with the sleeve. One of the sleeve and the push rod is provided with a first disassembly structure, and the other is provided with a second disassembly structure.

8. The tool for repairing a butterfly valve oil motor according to claim 7, characterized in that: The push rod is cylindrical, the sleeve is annular, at least one end of the push rod is provided with an external thread section, the external thread section serves as the first disassembly structure, and one end of the sleeve has an internal thread section, the internal thread section serves as the second disassembly structure.

9. The tool for repairing a butterfly valve oil motor according to claim 5, characterized in that: The top rod is constructed of a metal rod.

10. The tool for repairing a butterfly valve oil motor according to claim 5, characterized in that: At least a portion of the interior of the push rod is configured as a hollow structure.

Images