Generator big end cover glue injection port glue leakage prevention device

Abstract

The utility model relates to generator maintenance technical field, specifically provide generator big end cover glue injection port anti glue liquid leakage device, including straight through switch ball valve and generator end cover, straight through switch ball valve includes setting in the middle pipe body, the outside of pipe body is sleeved with first fixed ring, the outside of first fixed ring is provided with the insertion fixed groove, one side of generator end cover is fixedly installed with U type seat. The utility model will traditional screw plug be transformed into straight through switch ball valve, straight through switch ball valve can realize fast opening and close glue injection port, facilitate the glue injection operation and check when the generator is running or overhauls, improve the sealing performance of glue injection port simultaneously, avoid the glue liquid leakage, guarantee the stable operation of generator, and utilize the elasticity of tensile spring, make the insertion fixed block connected with it be clamped in the insertion fixed groove inside that first fixed ring set up, thereby can avoid the short pipe of external thread because machine vibration appears the phenomenon of screw back, enhance the firmness of installation.

Description

Technical Field

[0001] This utility model relates to the field of generator maintenance technology, and in particular to a device for preventing glue leakage from the glue injection port of the generator large end cover. Background Technology

[0002] Currently, large generator stator cores and rotors are cooled with hydrogen. The generator end cover is an important hydrogen sealing boundary. There is a glue groove inside the generator end cover. Hydrogen sealing is achieved by filling the glue groove with glue through the glue injection port. The quality of glue injection directly affects the tightness of the hydrogen boundary of the generator body. If a hydrogen leakage defect occurs in the generator end cover during unit operation, online glue injection is required at the glue injection port of the generator.

[0003] Currently, most existing generator large end cover glue inlets are sealed with screw plugs. During generator operation, if re-glue application or glue application checks are needed, using screw plugs is extremely inconvenient, requiring a significant amount of time to tighten the screws. Frequent tightening can also lead to stripped screws and poor sealing. If the seal is poor, glue leakage can occur, contaminating internal generator components and potentially affecting the generator's normal operation and insulation performance. Therefore, it is necessary to provide a glue leakage prevention device for generator large end cover glue inlets to solve these technical problems. Utility Model Content

[0004] The technical problem this utility model aims to solve is that in the existing technology, the glue injection port of the generator large end cover is mostly sealed with screw plugs. During generator operation, if it is necessary to re-inject glue or check the glue injection status, using screw plugs is extremely inconvenient, requiring a lot of time to tighten the screws. Frequent tightening can easily lead to problems such as stripped screws and poor sealing. Once the seal is not tight, glue leakage will occur, which will not only contaminate the internal components of the generator, but may also affect the normal operation and insulation performance of the generator. In view of the above-mentioned defects of the existing technology, a glue leakage prevention device for the glue injection port of the generator large end cover is provided, including a straight-through switch ball valve and a generator end cover. The straight-through switch ball valve includes a tube body located in the middle, a first fixing ring sleeved on the outside of the tube body, and a insertion groove opened on the outside of the first fixing ring. A U-shaped seat is fixedly installed on one side of the generator end cover. This invention modifies the traditional screw plug into a straight-through ball valve. The straight-through ball valve enables rapid opening and closing of the glue inlet, facilitating glue injection and inspection during generator operation or maintenance. It also improves the sealing performance of the glue inlet, preventing glue leakage and ensuring stable generator operation. Furthermore, by utilizing the elastic tension of the tension spring, the connecting insert block is secured within the insert groove of the first fixing ring, thus preventing the external threaded short pipe from unraveling due to machine vibration and enhancing installation stability.

[0005] To achieve the above objectives, the technical solution of this utility model is: a device for preventing glue leakage at the glue inlet of a generator end cover, comprising a straight-through ball valve and a generator end cover. The straight-through ball valve includes a tube body disposed in the middle, a first fixing ring sleeved on the outer side of the tube body, and a insertion groove formed on the outer side of the first fixing ring. A U-shaped seat is fixedly installed on one side of the generator end cover, and a tension spring is fixedly installed on the front surface of the U-shaped seat. One end of the tension spring is fixedly connected to an insertion block penetrating the U-shaped seat, and one end of the insertion block is inserted into the insertion groove.

[0006] Furthermore, the insertion block has an L-shaped structure, and its longitudinal section has a rectangular structure.

[0007] Further, a threaded hole is provided on one side of the generator end cover, and the through-switch ball valve includes a short externally threaded pipe that is screwed into the threaded hole.

[0008] Furthermore, one end of the pipe body is fixedly connected to an externally threaded short pipe, and the straight-through ball valve also includes a switch wrench located on the outside of the pipe body.

[0009] Furthermore, the direct-connect ball valve also includes a second retaining ring connected to the pipe body, and the switch wrench is located between the first and second retaining rings.

[0010] In a further configuration, a U-shaped block is fixedly installed on the rear surface of the second fixing ring. A bidirectional lead screw is rotatably connected inside the U-shaped block. A movable rod that contacts the U-shaped block is symmetrically screwed to the outer side of the bidirectional lead screw. A clamp is fixedly connected to one end of the movable rod.

[0011] Further, a slot is provided on one side of the clamp, and an operating knob is fixedly connected to the upper end of the bidirectional lead screw through the U-shaped block.

[0012] Compared with related technologies, the anti-adhesive leakage device for the generator large end cover injection port provided by this utility model has the following beneficial effects:

[0013] This utility model provides a device to prevent glue leakage at the glue inlet of the generator large end cover. It replaces the traditional screw plug with a direct-acting ball valve, which allows for quick opening and closing of the glue inlet. This facilitates glue injection and inspection during generator operation or maintenance, while improving the sealing performance of the glue inlet, preventing glue leakage, and ensuring stable generator operation. Furthermore, the elastic force of the tension spring secures the connecting insert block within the insert groove of the first fixing ring, preventing the external threaded short pipe from stripping due to machine vibration, thus enhancing installation stability. This solves the problem that existing generator large end cover glue inlets often use screw plugs for sealing. During generator operation, if glue needs to be re-injected or the glue injection status checked, using screw plugs is extremely inconvenient, requiring a lot of time to tighten the screws. Frequent tightening can lead to screw stripping and poor sealing. Poor sealing can cause glue leakage, contaminating internal generator components and potentially affecting the generator's normal operation and insulation performance.

[0014] This utility model provides a device to prevent glue leakage at the glue injection port of the generator large end cover. By rotating the operating knob, the bidirectional screw connected to it is rotated, which controls the two movable rods on the outside to move the clamping parts in opposite directions, thereby securing the glue injection head inserted into the second fixing ring, freeing up the hands and enhancing the stability of the glue injection work. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the anti-glue leakage device for the generator large end cover glue injection port provided by this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the connection between the direct-flow ball valve and the generator end cover of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the first angle of connection between the direct-acting ball valve, the first fixing ring, and the insertion block of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the second angle of connection between the direct-acting ball valve, the first fixing ring, and the insertion block of this utility model.

[0019] Figure 5 This is a perspective view of the clamp component of this utility model.

[0020] The following are the labels in the diagram: 1. Straight-through ball valve; 2. Generator end cover; 3. Movable rod; 4. U-block; 5. First fixing ring; 6. Clamp; 7. Second fixing ring; 8. Pipe body; 9. Switch wrench; 10. Externally threaded short pipe; 11. Threaded hole; 12. Operating knob; 13. U-shaped seat; 14. Tension spring; 15. Insertion block; 16. Insertion groove; 17. Two-way lead screw; 18. Slot. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate typical embodiments of this utility model.

[0022] Example 1:

[0023] like Figure 1-5 As shown, the generator end cap glue injection port anti-glue leakage device of this utility model includes a straight-through switch ball valve 1 and a generator end cap 2. The straight-through switch ball valve 1 includes a tube body 8 located in the middle. A first fixing ring 5 is sleeved on the outside of the tube body 8. An insertion groove 16 is opened on the outside of the first fixing ring 5. A U-shaped seat 13 is fixedly installed on one side of the generator end cap 2. A tension spring 14 is fixedly installed on the front surface of the U-shaped seat 13. One end of the tension spring 14 is fixedly connected to an insertion block 15 that penetrates the U-shaped seat 13. One end of the insertion block 15 is inserted into the insertion groove 16.

[0024] In implementation, the traditional screw plug is replaced with a straight-through ball valve 1. The straight-through ball valve 1 can quickly open and close the glue injection port, facilitating glue injection and inspection during generator operation or maintenance. It also improves the sealing performance of the glue injection port, preventing glue leakage and ensuring stable generator operation. Furthermore, the elastic tension of the tension spring 14 secures the connecting insert block 15 inside the insert groove 16 of the first fixing ring 5, preventing the external thread short pipe 10 from stripping due to machine vibration and enhancing the installation's firmness. This solves the technical problem that in the existing technology, the glue injection port of the generator's large end cover is mostly sealed with screw plugs. During generator operation, if glue needs to be injected again or the glue injection status needs to be checked, the operation with screw plugs is extremely inconvenient, requiring a lot of time to tighten the screws. Frequent tightening can easily lead to problems such as stripped screws and poor sealing. Once the seal is poor, glue leakage will occur, which not only contaminates the internal components of the generator but may also affect the normal operation and insulation performance of the generator.

[0025] like Figure 3 As shown, the insertion block 15 has an L-shaped structure, and the longitudinal section of the insertion block 15 has a rectangular structure.

[0026] like Figure 2As shown, a threaded hole 11 is provided on one side of the generator end cover 2, and the through switch ball valve 1 includes an externally threaded short pipe 10 that is screwed into the threaded hole 11.

[0027] Example 2:

[0028] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: one end of the pipe body 8 is fixedly connected to the externally threaded short pipe 10, the straight-through switch ball valve 1 also includes a switch wrench 9 disposed on the outside of the pipe body 8, the straight-through switch ball valve 1 also includes a second fixing ring 7 connected to the pipe body 8, the switch wrench 9 is located between the first fixing ring 5 and the second fixing ring 7, a U-shaped block 4 is fixedly installed on the rear surface of the second fixing ring 7, a bidirectional screw 17 is rotatably connected inside the U-shaped block 4, a movable rod 3 that contacts the U-shaped block 4 is symmetrically screwed on the outside of the bidirectional screw 17, a clamp 6 is fixedly connected to one end of the movable rod 3, a groove 18 is opened on one side of the clamp 6, and an operating knob 12 is fixedly connected to the upper end of the bidirectional screw 17 through the U-shaped block 4.

[0029] During implementation, by rotating the operating knob 12, the bidirectional lead screw 17 connected to it is rotated, thereby controlling the two movable rods 3 on the outside to move the clamp 6 in opposite directions, thus securing the glue injection head inserted into the second fixed ring 7, freeing up the hands while enhancing the stability of the glue injection work.

[0030] In use, this technical solution first fixes the straight-through switch ball valve 1 to one side of the generator end cover 2 using an external threaded short pipe 10 and a threaded hole 11. One end of the external threaded short pipe 10 is connected to the pre-set glue injection groove of the end cover. At the same time, under the elastic tension of the tension spring 14, the insertion block 15 connected to it is inserted into the inside of the insertion groove 16, improving the firmness of the installation of the straight-through switch ball valve 1. Then, the glue injection head of the glue injection tool is inserted into the second fixing ring 7. After that, the operating knob 12 is turned to drive the bidirectional lead screw 17 connected to it to rotate, which drives the two outer movable rods 3 to move the clamping parts 6 in opposite directions, so that the two clamping parts 6 clamp the glue injection head. Finally, the glue injection is performed using the glue injection tool.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing glue leakage at the glue inlet of a generator end cover, comprising a straight-through ball valve (1) and a generator end cover (2), characterized in that: The direct-connect ball valve (1) includes a tube body (8) located in the middle. A first fixing ring (5) is sleeved on the outside of the tube body (8). An insertion groove (16) is opened on the outside of the first fixing ring (5). A U-shaped seat (13) is fixedly installed on one side of the generator end cover (2). A tension spring (14) is fixedly installed on the front surface of the U-shaped seat (13). One end of the tension spring (14) is fixedly connected to an insertion block (15) that penetrates the U-shaped seat (13). One end of the insertion block (15) is inserted into the insertion groove (16).

2. The device for preventing glue leakage at the injection port of the generator large end cover according to claim 1, characterized in that, The insertion block (15) has an L-shaped structure, and the longitudinal section of the insertion block (15) has a rectangular structure.

3. The device for preventing glue leakage at the injection port of the generator large end cover according to claim 1, characterized in that, The generator end cover (2) has a threaded hole (11) on one side, and the straight-through ball valve (1) includes an externally threaded short pipe (10) that is screwed into the threaded hole (11).

4. The device for preventing glue leakage at the injection port of the generator large end cover according to claim 3, characterized in that, One end of the pipe body (8) is fixedly connected to the external threaded short pipe (10), and the straight-through ball valve (1) also includes a switch wrench (9) located on the outside of the pipe body (8).

5. The device for preventing glue leakage at the injection port of the generator large end cover according to claim 4, characterized in that, The straight-through ball valve (1) also includes a second fixing ring (7) connected to the pipe body (8), and the switch wrench (9) is located between the first fixing ring (5) and the second fixing ring (7).

6. The device for preventing glue leakage at the injection port of the generator large end cover according to claim 5, characterized in that, A U-shaped block (4) is fixedly installed on the rear surface of the second fixing ring (7). A two-way lead screw (17) is rotatably connected inside the U-shaped block (4). A movable rod (3) that contacts the U-shaped block (4) is symmetrically screwed on the outside of the two-way lead screw (17). A clamp (6) is fixedly connected to one end of the movable rod (3).

7. The device for preventing glue leakage at the injection port of the generator large end cover according to claim 6, characterized in that, The clamp (6) has a slot (18) on one side, and the upper end of the bidirectional lead screw (17) is fixedly connected to the U-shaped block (4) with an operating knob (12).

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