Condensate pump turning auxiliary device

Abstract

The utility model relates to the technical field of nuclear power field equipment, in particular to a condensate pump barring auxiliary device which is connected with a motor shaft of a condensate pump during use and comprises a disc, a push rod and a high-strength bolt. A plurality of groups of push rods are arranged and are symmetrically arranged along the disc; a plurality of guide holes matched with bolt holes in a motor shaft are formed in the disc, and the high-strength bolts extend into the guide holes and are movably connected with the motor shaft. The condensate pump turning auxiliary tool is simple in structure and easy to install; the operation is convenient and easy to master; and the safety coefficient is high. The auxiliary device can reduce the risk of damage of the condensate pump and prolong the service life of the condensate pump and the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power devices, in particular to a condensate pump turning auxiliary device. Background Art

[0002] In nuclear power plants, when overhauling large vertical and horizontal pumps (such as condensate pumps, circulating water pumps, feed water pumps, etc.), it is necessary to dismantle and install the coupling bolts, check the centering of the equipment, and disassemble the motor or condensate pump. Since the condensate pump is a barrel-type long-axis submersible centrifugal pump, the motor and pump are designed with thrust bearings, and the location environment is narrow and the rotor is heavy, which can easily cause difficulty in turning the gear. If the gear is forced to turn, it is easy to cause damage to the equipment, which poses a great safety hazard to the equipment.

[0003] Therefore, it is necessary to use a turning tool to quickly and effectively turn the rotor to meet the requirements of the maintenance regulations. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a condensate pump cranking auxiliary device, which can reduce the risk of equipment damage and extend the service life of the condensate pump and the motor.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The utility model provides a condensate pump turning auxiliary device, which is connected with the motor shaft of the condensate pump when in use, and comprises a disc, a push rod and high-strength bolts;

[0007] The push rods are arranged in several groups and are symmetrically arranged along the disc; a hole connected to the motor shaft and several guide holes matching the bolt holes on the motor shaft are arranged at the center of the disc, and the high-strength bolts extend into the guide holes and are movably connected to the motor shaft.

[0008] In one embodiment of the present invention, the disc has a thickness of 25 to 40 mm and a diameter of 200 to 300 mm.

[0009] In one embodiment of the utility model, an internal thread matching the high-strength bolt is provided on the inner wall of the guide hole.

[0010] In one embodiment of the utility model, the push rod is arranged on the upper surface of the disc or embedded in the disc (two design modes);

[0011] When the push rod is arranged on the upper surface of the disc, the push rod is connected to the disc by fillet welding (preferably, the angle of the fillet welding is 45-60°);

[0012] When the push rod is embedded in the disc, its embedding depth is 1 / 2 to 2 / 3 of the push rod diameter.

[0013] In one embodiment of the present invention, the connection between the lower surface of the push rod and the side surface of the disc is rounded (for enhancing the bending strength).

[0014] In one embodiment of the present utility model, the push rod is selected from one of a first push rod or a second push rod;

[0015] The first push rod is a cylindrical rod;

[0016] The second push rod is composed of a basic rod and an extension rod, and a hollow groove is arranged inside the basic rod to allow the extension rod to move.

[0017] In one embodiment of the present utility model, when the push rod is the first push rod, its outer diameter is 50-60 mm and its length is 1.0-2.0 m;

[0018] One end of the push rod is connected to the disc, and the other end is suspended.

[0019] In one embodiment of the present utility model, when the push rod is the second push rod, one end of the base rod is connected to the disc, and the other end is movably connected to the extension rod.

[0020] In one embodiment of the utility model, the inner wall of the hollow groove is provided with an internal thread, and the outer side of the extension rod is provided with an external thread matching the internal thread.

[0021] In one embodiment of the present utility model, the outer diameter of the base rod is 50-60 mm and the length is 1.2-1.4 m;

[0022] The outer diameter of the hollow groove is 30-45 mm and the depth is 0.9-1.0 m;

[0023] The outer diameter of the extension rod is 30-45 mm, and the length is 0.9-1.0 m.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] (1) Easy to operate and master: The auxiliary device of the utility model is a special tool for condensate pump turning. It is purely mechanically operated during use and can effectively reduce manpower.

[0026] (2) Low risk of personal injury and high safety factor: The auxiliary device of the utility model is made of stainless steel and supported by a base, so it can withstand heavier pressure; therefore, when used reasonably, the working process will be safer and the risk of personal injury will be greatly reduced.

[0027] (3) The risk of damage to the thrust bearing of the condensate pump motor bearing due to collision can be effectively avoided: The auxiliary device of the utility model can avoid the use of the rotor lifting and turning method, and effectively reduce the risk of damage to the thrust bearing assembly of the key component due to rotor lifting and turning.

[0028] (4) Easy to assemble and disassemble, easy to carry, simple in structure, and easy to install: The auxiliary device of the utility model has a simple structure, is fixed with bolts, and is easy to assemble and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A top view of a condensate pump turning auxiliary device of Example 1;

[0030] Figure 2 It is a side view of a condensate pump turning auxiliary device of Example 1;

[0031] Figure 3 A side view of a condensate pump turning auxiliary device according to Embodiment 2;

[0032] Figure 4 A top view of a condensate pump turning auxiliary device according to Embodiment 3;

[0033] Figure 5 It is a side view of a condensate pump turning auxiliary device of Example 3;

[0034] Figure 6 It is a side view of a condensate pump turning auxiliary device of Example 4;

[0035] Numbers in the figure: 1, disc; 2, push rod; 21, base rod; 22, extension rod; 3, hole; 4, high-strength bolt. DETAILED DESCRIPTION

[0036] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Example 1

[0041] This embodiment provides a condensate pump turning auxiliary device, which is connected to the motor shaft of the condensate pump when in use. Figures 1-2 As shown, it includes a disc 1, a push rod 2 and a high-strength bolt 4;

[0042] There are three groups of push rods 2 (more than two groups can be set according to actual conditions), and they are symmetrically arranged along the disk 1; the center of the disk 1 is provided with a hole 3 connected to the motor shaft, and a plurality of guide holes matching the bolt holes on the motor shaft (the number of the guide holes is the same as the number of the bolt holes), and high-strength bolts 4 extend into the guide holes and are movably connected to the motor shaft.

[0043] Furthermore, the disc 1 has a thickness of 25 to 40 mm and a diameter of 200 to 300 mm (which can be adjusted accordingly according to the actual application scenario);

[0044] Furthermore, an internal thread matching the high-strength bolt 4 is provided on the inner wall of the guide hole;

[0045] Furthermore, the push rod 2 is a cylindrical rod, which is welded to the upper surface of the disc 1 by fillet welding, wherein the angle of the fillet welding is 45 to 60 degrees, and the connection between the lower surface of the push rod 2 and the side of the disc 1 is rounded to enhance the bending strength;

[0046] Furthermore, the outer diameter of the push rod 2 is 50-60 mm and the length is 1.0-2.0 m;

[0047] Furthermore, the disc 1 is a stainless steel disc, the push rod 2 is a stainless steel push rod, and the high-strength bolt 4 is selected from one of 8.8-grade high-strength bolts, 10.9-grade high-strength bolts, or 12.9-grade high-strength bolts.

[0048] When in use, the rotor is manually rotated by the push rod 2, and the centering data and the coupling clearance status are recorded at the coupling below; when not in use, the high-strength bolts 4 can be removed and hoisted using a crane.

[0049] Example 2

[0050] This embodiment provides a condensate pump turning auxiliary device, which is connected to the motor shaft of the condensate pump when in use. Figure 3 As shown, it includes a disc 1, a push rod 2 and a high-strength bolt 4;

[0051] There are three groups of push rods 2 (more than two groups can be set according to actual conditions), and they are symmetrically arranged along the disk 1; the center of the disk 1 is provided with a hole 3 connected to the motor shaft, and a plurality of guide holes matching the bolt holes on the motor shaft (the number of the guide holes is the same as the number of the bolt holes), and high-strength bolts 4 extend into the guide holes and are movably connected to the motor shaft.

[0052] Furthermore, the disc 1 has a thickness of 25 to 40 mm and a diameter of 200 to 300 mm (which can be adjusted accordingly according to the actual application scenario);

[0053] Furthermore, an internal thread matching the high-strength bolt 4 is provided on the inner wall of the guide hole;

[0054] Furthermore, the push rod 2 is a cylindrical rod, and the push rod 2 is embedded in the disc 1, and the embedding depth is 1 / 2 to 2 / 3 of the diameter of the push rod 2, and the embedding length is 1 / 5 to 1 / 3 of the length of the push rod 2; the connection between the lower surface of the push rod 2 and the side of the disc 1 is chamfered to enhance the bending strength;

[0055] Furthermore, the outer diameter of the push rod 2 is 50-60 mm and the length is 1.0-2.0 m;

[0056] Furthermore, the disc 1 is a stainless steel disc, the push rod 2 (the base rod 21 and the extension rod 22) is a stainless steel push rod, and the disc 1 and the base rod 21 are integrated; the high-strength bolt 4 is selected from one of the 8.8-grade high-strength bolts, 10.9-grade high-strength bolts or 12.9-grade high-strength bolts.

[0057] When in use, the rotor is manually rotated by the push rod 2 (more labor-saving rotation is achieved through the cooperation of the base rod 21 and the extension rod 22), and the centering data and the coupling clearance status are recorded at the coupling below; when not in use, the high-strength bolts 4 can be removed and hoisted using a crane.

[0058] Example 3

[0059] This embodiment provides a condensate pump turning auxiliary device, which is connected to the motor shaft of the condensate pump when in use. Figures 4-5 As shown, it includes a disc 1, a push rod 2 and a high-strength bolt 4;

[0060] There are three groups of push rods 2 (more than two groups can be set according to actual conditions), and they are symmetrically arranged along the disk 1; the center of the disk 1 is provided with a hole 3 connected to the motor shaft, and a plurality of guide holes matching the bolt holes on the motor shaft (the number of the guide holes is the same as the number of the bolt holes), and high-strength bolts 4 extend into the guide holes and are movably connected to the motor shaft.

[0061] Furthermore, the disc 1 has a thickness of 25 to 40 mm and a diameter of 200 to 300 mm (which can be adjusted accordingly according to the actual application scenario);

[0062] Furthermore, an internal thread matching the high-strength bolt 4 is provided on the inner wall of the guide hole;

[0063] Furthermore, the push rod 2 is composed of a base rod 21 and an extension rod 22. A hollow groove is provided inside the base rod 21 to allow the extension rod 22 to move. One end of the base rod 21 is connected to the disc 1, and the other end is movably connected to the extension rod 22. The inner wall of the hollow groove is provided with an internal thread, and the outer side of the extension rod 22 is provided with an external thread matching the internal thread.

[0064] Furthermore, the base rod 21 is welded to the upper surface of the disc 1 by fillet welding, wherein the angle of the fillet welding is 45 to 60° (wherein the portion where the base rod 21 is welded to the upper surface of the disc 1 is solid in design); the lower surface of the push rod 2 is chamfered at the connection with the side surface of the disc 1 to enhance the bending strength;

[0065] Furthermore, the outer diameter of the base rod 21 is 50-60 mm and the length is 1.2-1.4 m; the outer diameter of the hollow groove is 30-45 mm and the depth is 0.9-1.0 m; the outer diameter of the extension rod 22 is 30-45 mm and the length is 0.9-1.0 m;

[0066] Furthermore, the disc 1 is a stainless steel disc, the push rod 2 is a stainless steel push rod, and the high-strength bolt 4 is selected from one of 8.8-grade high-strength bolts, 10.9-grade high-strength bolts, or 12.9-grade high-strength bolts.

[0067] When in use, the rotor is manually rotated by the push rod 2, and the centering data and the coupling clearance status are recorded at the coupling below; when not in use, the high-strength bolts 4 can be removed and hoisted using a crane.

[0068] Example 4

[0069] This embodiment provides a condensate pump turning auxiliary device, which is connected to the motor shaft of the condensate pump when in use. Figure 6 As shown, it includes a disc 1, a push rod 2 and a high-strength bolt 4;

[0070] There are three groups of push rods 2 (more than two groups can be set according to actual conditions), and they are symmetrically arranged along the disk 1; the center of the disk 1 is provided with a hole 3 connected to the motor shaft, and a plurality of guide holes matching the bolt holes on the motor shaft (the number of the guide holes is the same as the number of the bolt holes), and high-strength bolts 4 extend into the guide holes and are movably connected to the motor shaft.

[0071] Furthermore, the disc 1 has a thickness of 25 to 40 mm and a diameter of 200 to 300 mm (which can be adjusted accordingly according to the actual application scenario);

[0072] Furthermore, an internal thread matching the high-strength bolt 4 is provided on the inner wall of the guide hole;

[0073] Furthermore, the push rod 2 is composed of a base rod 21 and an extension rod 22. A hollow groove is provided inside the base rod 21 to allow the extension rod 22 to move. One end of the base rod 21 is connected to the disc 1, and the other end is movably connected to the extension rod 22. The inner wall of the hollow groove is provided with an internal thread, and the outer side of the extension rod 22 is provided with an external thread matching the internal thread.

[0074] Furthermore, the base rod 21 is embedded in the disc 1, and the embedding depth is 1 / 2 to 2 / 3 of the diameter of the base rod 21, and the embedding length is 1 / 5 to 1 / 3 of the length of the base rod 21 (wherein, the portion of the base rod 21 embedded in the disc 1 is solid in design); the lower surface of the push rod 2 and the side of the disc 1 are connected in a chamfered manner to enhance the bending strength;

[0075] Furthermore, the outer diameter of the base rod 21 is 50-60 mm and the length is 1.2-1.4 m; the outer diameter of the hollow groove is 30-45 mm and the depth is 0.9-1.0 m; the outer diameter of the extension rod 22 is 30-45 mm and the length is 0.9-1.0 m;

[0076] Furthermore, the disc 1 is a stainless steel disc, the push rod 2, the base rod 21 and the extension rod 22 are stainless steel push rods, and the disc 1 and the base rod 21 are integrated; the high-strength bolt 4 is selected from one of 8.8 grade high-strength bolts, 10.9 grade high-strength bolts or 12.9 grade high-strength bolts.

[0077] When in use, the rotor is manually rotated by the push rod 2 (more labor-saving rotation is achieved through the cooperation of the base rod 21 and the extension rod 22), and the centering data and the coupling clearance status are recorded at the coupling below; when not in use, the high-strength bolts 4 can be removed and hoisted using a crane.

[0078] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the interpretation of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A condensate pump turning auxiliary device, which is connected to the motor shaft of the condensate pump when in use, and is characterized in that: It comprises a disc (1), a push rod (2) and a high-strength bolt (4); The push rods (2) are provided in a plurality of groups and are symmetrically arranged along the disk (1); a hole (3) connected to the motor shaft and a plurality of guide holes matching the bolt holes on the motor shaft are provided at the center of the disk (1); the high-strength bolts (4) extend into the guide holes and are movably connected to the motor shaft.

2. A condensate pump turning auxiliary device according to claim 1, characterized in that: The disc (1) has a thickness of 25 to 40 mm and a diameter of 200 to 300 mm.

3. The condensate pump turning auxiliary device according to claim 1, characterized in that: An internal thread matching the high-strength bolt (4) is arranged on the inner wall of the guide hole.

4. The condensate pump turning auxiliary device according to claim 1, characterized in that: The push rod (2) is arranged on the upper surface of the disc (1) or embedded in the disc (1); When the push rod (2) is arranged on the upper surface of the disc (1), the push rod (2) is connected to the disc (1) by fillet welding; When the push rod (2) is embedded in the disc (1), its embedding depth is 1 / 2 to 2 / 3 of the diameter of the push rod (2).

5. The condensate pump turning auxiliary device according to claim 1, characterized in that: The connection between the lower surface of the push rod (2) and the side surface of the disc (1) is arranged with a rounded corner.

6. The condensate pump turning auxiliary device according to claim 1, characterized in that: The push rod (2) is selected from one of a first push rod and a second push rod; The first push rod is a cylindrical rod; The second push rod is composed of a base rod (21) and an extension rod (22); a hollow groove is arranged inside the base rod (21) to allow the extension rod (22) to move.

7. A condensate pump turning auxiliary device according to claim 6, characterized in that: When the push rod (2) is the first push rod, its outer diameter is 50-60 mm and its length is 1.0-2.0 m; One end of the push rod (2) is connected to the disc (1), and the other end is suspended.

8. The condensate pump turning auxiliary device according to claim 6, characterized in that: When the push rod (2) is a second push rod, one end of the basic rod (21) is connected to the disc (1), and the other end of the basic rod (21) is movably connected to the extension rod (22).

9. The condensate pump turning auxiliary device according to claim 8, characterized in that: The inner wall of the hollow groove is provided with an internal thread, and the outer side of the extension rod (22) is provided with an external thread matching the internal thread.

10. The condensate pump turning auxiliary device according to claim 6, characterized in that: The outer diameter of the base rod (21) is 50-60 mm and the length is 1.2-1.4 m; The outer diameter of the hollow groove is 30-45 mm and the depth is 0.9-1.0 m; The extension rod (22) has an outer diameter of 30 to 45 mm and a length of 0.9 to 1.0 m.

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