Dismounting tool for end cover with center hole and dismounting device for end cover of steam-driven pump

Abstract

The utility model provides a dismounting tool with a center hole end cover, which comprises an equipment end cover, an equipment shell, a telescopic driving piece, a pull rod and a supporting seat, the equipment end cover is connected with the equipment shell, and a through hole is formed in the middle of the equipment end cover; one end of the telescopic driving part is located at the through hole of the equipment end cover and abuts against the solid structure in the equipment shell, and the other end of the telescopic driving part abuts against the supporting base. At least two pull rods are uniformly distributed around the telescopic driving part, one end of each pull rod is connected with the supporting seat, and the other end of each pull rod is connected with the equipment end cover. By the adoption of the device, the solid structure of the middle hole portion of the device end cover is used for supporting the telescopic driving piece, power of the telescopic driving piece is evenly transmitted to all directions of the device end cover through the telescopic driving piece and the pull rod, and the device end cover can be disassembled from the device shell in a translation mode; and the equipment end cover does not deflect, so that the dismounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of end cover disassembly tools, in particular to a disassembly tool with a central hole end cover and a pneumatic pump end cover disassembly device. Background Art

[0002] In thermal power plants, equipment with heavy end covers is common, such as steam-driven feedwater pumps, steam turbines, and some heat exchangers. During equipment maintenance, the nuts connecting the end cover to the equipment housing must be removed before the cover can be removed from the equipment. Due to the end cover's substantial weight and the long-term sealing connection to the equipment, which can cause adhesion, manual removal is challenging and cannot be achieved. Currently, the conventional method involves creating a process hole with internal threads in the end cover. During removal, a screw is screwed into the hole, pressing against the equipment housing. Continued force is applied to the knob to separate the end cover from the housing. This method requires repeated screwing from different positions, which is time-consuming. Furthermore, the force applied to the end cover is asymmetrical, leading to inevitable deflection. This can easily interfere with the end cover when a shaft protrudes from the housing, making the operation cumbersome and inefficient. Furthermore, repeated turning of the knob can easily damage the internal threads of the end cover, resulting in scrap and high replacement costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is: how to improve the disassembly efficiency of the end cover and extend the service life of the end cover.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] The utility model provides a disassembly tool with a central hole end cover, comprising an equipment end cover, an equipment shell, a telescopic drive member, a pull rod, and a support seat. The equipment end cover is connected to the equipment shell, and a through hole is provided in the middle of the equipment end cover; one end of the telescopic drive member is located at the through hole of the equipment end cover and abuts against the physical structure inside the equipment shell, and the other end of the telescopic drive member abuts against the support seat; at least two pull rods are provided and are evenly distributed around the telescopic drive member, one end of the pull rod is connected to the support seat, and the other end is connected to the equipment end cover.

[0006] The beneficial effects of the utility model are:

[0007] By adopting the utility model, the telescopic drive member is supported by the solid structure at the hole part of the equipment end cover, and the power of the telescopic drive member is evenly transmitted to all directions of the equipment end cover through the telescopic drive member and the pull rod, thereby realizing the translation and removal of the equipment end cover from the equipment casing; when disassembling, there is no need to change the installation direction of any component, only the action of the telescopic drive member needs to be controlled, and the equipment end cover does not have deflection, thereby improving the disassembly efficiency; at the same time, there is no need to repeatedly turn the knob thread, thereby avoiding damage to the equipment end cover structure that makes it unusable, thereby extending the service life.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the pull rod is a screw rod, and the device end cover is evenly distributed with a plurality of internal threaded holes around its own axis, and the pull rod is connected to the internal threaded holes of the device end cover through threads.

[0010] The pull rod can be screwed into the process hole of the equipment end cover through a thread, which is convenient for disassembly and assembly, and the equipment end cover will not be damaged during the disassembly and assembly process. There is no need to turn the knob or pull rod during the disassembly process, the thread stress is small, and the service life is long.

[0011] Furthermore, one end of the pull rod passes through the support seat and is provided with a limit block, and one end of the limit block is attached to the support seat.

[0012] The power of the telescopic drive is transmitted to the equipment end cover through the support base, limit block and pull rod in sequence. There is no need to fix the pull rod and the support base, which is convenient for disassembly and assembly. During installation, the appropriate support base can be selected according to the size of the equipment end cover and the position of the pull rod can be adjusted, which has good adaptability.

[0013] Furthermore, the limiting block is a bolt head, and the bolt head is integrally formed and connected to the pull rod.

[0014] The bolt head and the pull rod are integrally formed by welding, forging or hot rolling, etc., which is convenient to manufacture, low in cost, high in strength and good in reliability.

[0015] Furthermore, there are an even number of the internal threaded holes, there are two pull rods, the support seat is in an elongated strip shape, and both ends of the support seat are connected to the pull rods.

[0016] The two pull rods are located on both sides of the telescopic drive member, so that the equipment end cover is subjected to symmetrical tension and avoids deflection; the number of pull rods used is small and the cost is low; at the same time, when some internal threaded holes are damaged, other internal threaded holes can be used to install the pull rods without scrapping the equipment end cover.

[0017] Furthermore, an extension block is provided between the telescopic driving member and the support seat.

[0018] It is convenient to compensate for the distance between the telescopic drive member and the support seat, so there is no need to excessively limit the length of the pull rod, and there is no need to increase the stroke specifications of the telescopic drive member, thereby reducing the material preparation cost.

[0019] Furthermore, the extension block is cylindrical, and one end of the extension block is provided with a circular blind hole, which can be sleeved on the end of the telescopic driving member.

[0020] The sliding of the extension block during disassembly is avoided, and the collinearity of the extension block and the telescopic drive member is ensured, thereby improving stability.

[0021] Furthermore, a circular boss is provided at the other end of the extension block, and the diameter of the boss is the same as the diameter of the blind hole.

[0022] The contact force positions at both ends of the extension block are ensured to be coaxial, and the stability is good; at the same time, when the distance between the driving member and the support seat is large, multiple extension blocks can be used for docking, which has good flexibility.

[0023] Furthermore, the telescopic driving member is a jack, the fixed end of the jack abuts against the physical structure inside the device shell, and the movable end of the jack abuts against the support seat.

[0024] It has large load-bearing capacity and is easy to operate; it does not require external hydraulic system assistance and has low cost.

[0025] The utility model also provides a pneumatic pump end cover disassembly device, including the above-mentioned disassembly tool with the end cover with a center hole, the equipment end cover is a pneumatic pump end cover, the equipment housing is a pneumatic pump housing, a rotor is provided in the pneumatic pump housing, and one end of the telescopic drive member abuts against the rotor.

[0026] The pneumatic pump is a pneumatic water supply pump, which ensures that the end cover of the pneumatic water supply pump does not tilt during the disassembly process, and the time is short, thereby improving the disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the present utility model.

[0028] Figure 2 Schematic diagram of the structure of the extended block.

[0029] In the accompanying drawings, the technical features represented by the reference numerals are as follows:

[0030] 1- telescopic drive member; 2- pull rod; 3- support seat; 4- equipment end cover; 5- equipment housing; 6- limit block; 7- internal threaded hole; 8- extension block; 9- blind hole; 10- boss. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] This utility model refers to Figure 1-2 .

[0033] The utility model provides a disassembly tool with a central hole end cover, comprising an equipment end cover 4, an equipment shell 5, a telescopic drive member 1, a pull rod 2, and a support seat 3. The equipment end cover 4 is connected to the equipment shell 5, and a through hole is provided in the middle of the equipment end cover 4; one end of the telescopic drive member 1 is located at the through hole of the equipment end cover 4 and abuts against the physical structure inside the equipment shell 5, and the other end of the telescopic drive member 1 abuts against the support seat 3; at least two pull rods 2 are provided and are evenly distributed around the telescopic drive member 1, one end of the pull rod 2 is connected to the support seat 3, and the other end is connected to the equipment end cover 4.

[0034] principle:

[0035] The device refers to a device with a heavy end cover and a through hole in the middle of the end cover, such as a steam-driven water supply pump, a steam turbine, and some heat exchangers. The device end cover 4 and the device housing 5 belong to the prior art, and the purpose of the present utility model is to disassemble the device end cover 4. In the above-mentioned device, there is a physical structure inside the device housing 5, such as a steam-driven water supply pump rotor. If the physical structure extends out of the through hole in the middle of the device end cover 4, the telescopic drive member 1 directly abuts against the physical structure; if it does not extend out, the telescopic drive member 1 can abut against the physical structure through a structure such as a pad, that is, it indirectly abuts against the physical structure.

[0036] This solid structure supports the telescopic drive member 1. When the telescopic drive member 1 extends, it pushes the support base 3. The support base 3 pulls the device end cover 4 via the pull rod 2. This overcomes the weight of the device end cover 4 and the adhesion between the device end cover 4 and the device housing 5, allowing the device end cover 4 to be removed. Because the pull rods 2 are evenly arranged around the telescopic drive member 1, the device end cover 4 will not deflect.

[0037] In summary, the present invention utilizes the solid structure of the hole in the device end cover 4 to support the telescopic drive member 1, and the power of the telescopic drive member 1 is evenly transmitted to all positions of the device end cover 4 through the telescopic drive member 1 and the pull rod 2, thereby realizing the translation and removal of the device end cover 4 from the device housing 5; during disassembly, there is no need to change the installation position of any component, only the movement of the telescopic drive member 1 needs to be controlled, and the device end cover 4 does not have deflection, thereby improving the disassembly efficiency; at the same time, there is no need to repeatedly turn the knob thread, thereby avoiding structural damage to the device end cover 4 that makes it impossible to use it again, thereby extending the service life.

[0038] Furthermore, the pull rod 2 is a screw rod, and the device end cover 4 has a plurality of internal threaded holes 7 evenly distributed around its own axis. The pull rod 2 is connected to the internal threaded holes 7 of the device end cover 4 through threads.

[0039] The pull rod 2 can be screwed into the process hole of the equipment end cover 4 through a thread, which is convenient for disassembly and assembly, and the equipment end cover 4 will not be damaged during the disassembly and assembly process. There is no need to turn the knob of the pull rod 2 during the disassembly process, the thread stress is small, and the service life is long.

[0040] Furthermore, one end of the pull rod 2 passes through the support seat 3 and is provided with a limit block 6 , and one end of the limit block 6 is attached to the support seat 3 .

[0041] The power of the telescopic drive part 1 is transmitted to the equipment end cover 4 in turn through the support seat 3, the limit block 6, and the pull rod 2. The pull rod 2 and the support seat 3 do not need to be fixed, which is convenient for disassembly and assembly. During installation, the appropriate support seat 3 can be selected according to the size of the equipment end cover 4 and the position of the pull rod 2 can be adjusted, which has good adaptability.

[0042] Furthermore, the limiting block 6 is a bolt head, and the bolt head is integrally connected to the pull rod 2 .

[0043] The bolt head and the pull rod 2 are integrally formed by welding, forging or hot rolling, etc., which is convenient to manufacture, low in cost, high in strength and good in reliability.

[0044] Furthermore, there are an even number of the internal threaded holes 7 , there are two pull rods 2 , the support base 3 is in an elongated strip shape, and both ends of the support base 3 are connected to the pull rods 2 .

[0045] The two pull rods 2 are located on both sides of the telescopic drive member 1, so that the equipment end cover 4 is subjected to symmetrical pulling force, avoiding deflection; the number of pull rods 2 is small and the cost is low; at the same time, when some internal threaded holes 7 are damaged, other internal threaded holes 7 can be used to install the pull rods 2 without scrapping the equipment end cover 4.

[0046] Furthermore, an extension block 8 is provided between the telescopic driving member 1 and the support seat 3 .

[0047] It is convenient to compensate for the distance between the telescopic drive member 1 and the support base 3, so there is no need to excessively limit the length of the pull rod 2, and there is no need to increase the stroke specification of the telescopic drive member 1, thereby reducing the material preparation cost.

[0048] Furthermore, the extension block 8 is cylindrical, and a circular blind hole 9 is provided at one end of the extension block 8 , and the blind hole 9 can be sleeved on the end of the telescopic driving member 1 .

[0049] The sliding of the extension block 8 during disassembly is avoided, and the collinearity of the extension block 8 and the telescopic drive member 1 during installation is ensured, thereby improving stability.

[0050] Furthermore, a circular boss 10 is provided at the other end of the extension block 8 , and the diameter of the boss 10 is the same as the diameter of the blind hole 9 .

[0051] The contact force positions at both ends of the extension block 8 are ensured to be coaxial, and the stability is good; at the same time, when the distance between the driving member and the support seat 3 is large, multiple extension blocks 8 can be used for docking, which has good flexibility.

[0052] Furthermore, the telescopic driving member 1 is a jack, the fixed end of the jack abuts against the physical structure inside the device housing 5 , and the movable end of the jack abuts against the support seat 3 .

[0053] Note: In addition, oil cylinders, pneumatic cylinders, electric telescopic rods, etc. can also be used.

[0054] It has large load-bearing capacity and is easy to operate; it does not require external hydraulic system assistance and has low cost.

[0055] The present utility model also provides a pneumatic pump end cover disassembly device, including the above-mentioned disassembly tool with the end cover with a central hole, the equipment end cover 4 is the pneumatic pump end cover, the equipment housing 5 is the pneumatic pump housing, and a rotor is provided in the pneumatic pump housing, and one end of the telescopic drive member 1 abuts against the rotor.

[0056] The pneumatic pump is a pneumatic water supply pump, which ensures that the end cover of the pneumatic water supply pump does not tilt during the disassembly process, and the time is short, thereby improving the disassembly efficiency.

[0057] In the description of the present invention, it should be understood that if there are descriptive terms indicating orientation, direction or positional relationship, such as: "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of understanding the present invention and simplifying the description, and does not indicate or imply that the referred part, element or whole must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0058] In addition, if there are order description terms, such as "first", "second", etc., their use in this specification is to facilitate understanding or simplify the description. For example, in order to distinguish multiple technical features with the same type or function, but they have to be mentioned separately, this specification may use prefix or suffix order description terms to distinguish them. Therefore, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of such features. In the description of this utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0059] In the present invention, if terms describing the relative functional relationship of structures are used, such as "install", "connect", "connect", "fix", etc., they should be understood in a broad sense unless otherwise clearly specified and limited. For example, "install", "connect", "connect", etc. can be fixed connections, detachable connections, or integrated; can be mechanical connections or electrical connections; can be direct connections or indirect connections through an intermediate medium, can be internal connections between two elements or interactive relationships between two elements; "fix" can be fixed to form an integral body, or can be detachably fixed through fasteners; can be directly fixed or fixed through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above-mentioned descriptive terms in the present invention can be understood according to the specific circumstances, the context, the coherence of the preceding and following texts, etc.

[0060] In this utility model, if descriptive terms with ancillary or connecting meaning appear, for example, a first feature being "on" or "below" a second feature, these should not be interpreted as limiting unless otherwise expressly specified or limited. For example, "on" or "below" may refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediary. Those skilled in the art will understand the specific meanings of these descriptive terms in this utility model based on the specific circumstances, context, and coherence of the preceding and following texts.

[0061] Furthermore, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments, examples and features of different embodiments and examples described in this specification, unless there is any contradiction, and these combinations or combinations should all fall within the scope summarized by the present invention.

[0063] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in the field within the scope of information available from public channels and in combination with the technical inspiration given by the application documents are still within the scope of protection of the present application.

Claims

1. A disassembly tool with a central hole end cap, characterized by: The invention comprises an equipment end cover (4), an equipment shell (5), a telescopic drive member (1), a pull rod (2), and a support seat (3); the equipment end cover (4) is connected to the equipment shell (5), and a through hole is provided in the middle of the equipment end cover (4); one end of the telescopic drive member (1) is located at the through hole of the equipment end cover (4) and abuts against the physical structure inside the equipment shell (5), and the other end of the telescopic drive member (1) abuts against the support seat (3); at least two pull rods (2) are provided and are evenly distributed around the telescopic drive member (1), one end of the pull rod (2) is connected to the support seat (3), and the other end is connected to the equipment end cover (4).

2. The disassembly tool with a central hole end cap according to claim 1, characterized in that: The pull rod (2) is a screw rod, and the device end cover (4) is evenly distributed with a plurality of internal threaded holes (7) around its own axis. The pull rod (2) and the internal threaded holes (7) of the device end cover (4) are connected through threads.

3. The disassembly tool with a central hole end cap according to claim 2, characterized in that: One end of the pull rod (2) passes through the support seat (3) and is provided with a limit block (6), and one end of the limit block (6) is attached to the support seat (3).

4. The disassembly tool with a central hole end cap according to claim 3, characterized in that: The limiting block (6) is a bolt head, and the bolt head is integrally formed and connected with the pull rod (2).

5. The disassembly tool with a central hole end cap according to claim 2, characterized in that: There are an even number of the internal threaded holes (7), there are two pull rods (2), the support seat (3) is in an elongated strip shape, and both ends of the support seat (3) are connected to the pull rods (2).

6. The disassembly tool with a central hole end cap according to claim 1, characterized in that: An extension block (8) is also provided between the telescopic driving member (1) and the support seat (3).

7. The disassembly tool with a central hole end cap according to claim 6, characterized in that: The extension block (8) is cylindrical, and one end of the extension block (8) is provided with a circular blind hole (9), and the blind hole (9) can be sleeved on the end of the telescopic driving member (1).

8. The disassembly tool with a central hole end cap according to claim 7, characterized in that: The other end of the extension block (8) is provided with a circular boss (10), and the diameter of the boss (10) is the same as the diameter of the blind hole (9).

9. The disassembly tool with a central hole end cap according to claim 1, characterized in that: The telescopic driving member (1) is a jack, the fixed end of the jack abuts against the entity structure inside the device housing (5), and the movable end of the jack abuts against the support seat (3).

10. A pneumatic pump end cover disassembly device, characterized by: The present invention comprises a disassembly tool with a central hole end cover according to any one of claims 1 to 9, wherein the device end cover (4) is a pneumatic pump end cover, the device housing (5) is a pneumatic pump housing, a rotor is provided in the pneumatic pump housing, and one end of the telescopic drive member (1) abuts against the rotor.

Images