Quick plugging bolt for hydrogen leakage of generator

Abstract

The utility model provides a quick plugging bolt for hydrogen leakage of a generator, and belongs to the technical field of power equipment. The problems that the generator hydrogen leakage hole plugging effect is poor, and plugging work wastes time and labor are solved. According to the technical scheme, the hydrogen leakage hole sealing device comprises a threaded sleeve and a threaded rod matched with the threaded sleeve, the threaded sleeve comprises a fixing base, one end of the fixing base is fixedly connected with a sealing component, the fixing base and the sealing component are integrally arranged, the other end of the fixing base is fixedly connected to a hydrogen leakage hole through plugging glue, and the sealing component is fixedly connected with the sealing component. A first through hole is formed in the fixed seat in a penetrating manner, the first through hole and the hydrogen leakage hole are coaxially formed, a second through hole is formed in the sealing part in a penetrating manner, the first through hole, the second through hole and the screw rod are coaxially arranged, a plurality of plugging balls are arranged in the second through hole and are in transition fit with the second through hole, and a first sealing part is arranged on the inner wall of the sealing part; a second sealing part is arranged on the screw rod, and the first sealing part and the second sealing part are matched with each other; the utility model is applied to generators.

Description

Technical Field

[0001] The utility model provides a fast hydrogen leakage plugging bolt for a generator, belonging to the technical field of power equipment. Background Art

[0002] Currently, most power plant generators use a water-hydrogen cooling method to cool the stators and rotors. However, hydrogen leakage occurs during operation, posing a safety hazard of hydrogen explosion. Frequent hydrogen replenishment is required to reduce the risk, which becomes an economic burden. The most common cause of hydrogen leakage in generators is pinholes in the welds of the generator plates. To address this, there are two existing methods to eliminate hydrogen leaks: one is to use a generator hydrogen leak plugging mold for pressure plugging, and the other is to directly use A / B glue for plugging. However, both methods have certain disadvantages.

[0003] If the hydrogen leakage plugging mold is fixed by the fulcrum of the generator body structure for plugging under pressure, there are the following disadvantages:

[0004] 1. The production process of the generator plugging mold is relatively complicated and labor-intensive. It also requires relatively high precision for the mold. In particular, the treatment of the interface between the mold and the generator is a difficult point. If it is not handled properly, the plugging effect will be affected.

[0005] 2. The generator plugging mold is difficult to install after it is made. The support point for fixing the mold on the generator body is often difficult to find, or there is no support point or the support point is unreliable. Finding a firm support point is a problem.

[0006] 3. After the generator plugging mold is made and the support points are fixed, since the mold is a cavity, in order to prevent hydrogen explosion, the air in the cavity needs to be replaced with carbon dioxide. The work procedure is complicated, and the inlet and outlet of the replacement gas need to be considered on the mold, which increases the difficulty of the actual work and has poor operability.

[0007] If A\B glue is used directly for plugging, there are the following disadvantages:

[0008] Due to the pressure inside the generator, the glue takes a long time to cure. During the curing process, the glue used to seal the hydrogen leakage points will be blown away by the hydrogen. Although some leakage points can be sealed, the sealing effect is poor. The leak sealing operation is time-consuming and labor-intensive, and the sealing effect is not good. Utility Model Content

[0009] In order to solve the technical problems of poor sealing effect of hydrogen leakage points of generators and time-consuming and labor-intensive sealing work, the utility model proposes a generator hydrogen leakage fast sealing bolt, the purpose of which is to achieve fast sealing of hydrogen leakage points of generators and improve the sealing effect by improving the hardware structure of the generator hydrogen leakage sealing device.

[0010] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a generator hydrogen leakage quick plugging bolt, comprising a threaded sleeve and a screw rod cooperating with the threaded sleeve, the threaded sleeve comprising a fixing seat, one end of the fixing seat is fixedly connected to a sealing component, the fixing seat and the sealing component are integrally arranged, and the other end of the fixing seat is fixedly connected to the hydrogen leakage hole by a sealing glue;

[0011] The fixing seat is provided with a first through hole, and the first through hole is coaxially arranged with the hydrogen leakage hole;

[0012] The sealing component is provided with a second through hole, and the first through hole, the second through hole and the screw are coaxially arranged;

[0013] A plurality of blocking balls are arranged in the second through hole, and the blocking balls are in transitional fit with the second through hole;

[0014] A first sealing portion is provided on the inner wall of the sealing component, and a second sealing portion is provided on the screw, and the first sealing portion and the second sealing portion fit together.

[0015] Furthermore, the first sealing portion is an internal thread, the second sealing portion is an external thread, and both the internal thread and the external thread are fine threads.

[0016] Furthermore, the diameter of the fixing seat is larger than the diameter of the sealing component.

[0017] Furthermore, the space occupied by the plurality of blocking balls is two-thirds of the length of the second through hole.

[0018] Furthermore, the length of the screw is at least one third of the length of the second through hole.

[0019] Furthermore, an adjusting portion is provided at one end of the screw away from the hydrogen leakage hole.

[0020] Furthermore, the sealing glue is A\B glue.

[0021] Furthermore, the internal thread is a rectangular thread.

[0022] Furthermore, the material of the blocking balls is HDJ-892 sealant.

[0023] Furthermore, the internal thread is M8, and the diameter of the blocking ball is 8 mm.

[0024] The beneficial effects of the present invention compared to the prior art are as follows:

[0025] 1. The screw sleeve of the utility model has a hollow structure. When the screw sleeve is fixedly connected to the hydrogen leakage hole of the generator through the sealing glue, it can effectively prevent the hydrogen from blowing out the sealing glue, greatly improving the curing effect of the sealing glue;

[0026] 2. The blocking ball of the utility model is transitionally matched with the second through hole of the sealing component, and the screw is threadedly matched with the second through hole, which can enhance the effect of plugging hydrogen leakage and greatly improve the safety of operation;

[0027] 3. The screw sleeve, screw rod and sealing ball of the utility model cooperate with each other to effectively seal the hydrogen leakage hole, which has a simple structure, convenient operation, small construction workload and is economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] Figure 1 It is a structural diagram of the utility model;

[0030] In the figure: 1 is a fixing seat, 2 is a sealing component, 3 is a first through hole, 4 is a second through hole, 5 is a sealing ball, 6 is a first sealing part, 7 is a screw, 8 is a second sealing part, 9 is an adjusting part, and 10 is a generator. DETAILED DESCRIPTION

[0031] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this invention based on specific circumstances.

[0033] like Figure 1 As shown, the utility model provides a generator hydrogen leakage quick plugging bolt, including a threaded sleeve and a screw 7 that cooperates with the threaded sleeve, the threaded sleeve includes a fixing seat 1, one end of the fixing seat 1 is fixedly connected to a sealing component 2, the fixing seat 1 and the sealing component 2 are integrally arranged, and the other end of the fixing seat 1 is fixedly connected to the hydrogen leakage hole by a sealing glue. In this embodiment, the sealing glue adopts A\B glue.

[0034] The diameter of the fixing seat 1 is larger than the diameter of the sealing component 2 , which can increase the contact area between the fixing seat 1 and the hydrogen leakage hole of the generator 10 , and is conducive to fixing and adhering the screw sleeve to the generator 10 .

[0035] The fixing base 1 is provided with a first through-hole 3, which is coaxially arranged with the hydrogen leak hole. The sealing component 2 is provided with a second through-hole 4, and the first through-hole 3, the second through-hole 4, and the screw 7 are coaxially arranged. When the fixing base 1 is fixedly bonded to the hydrogen leak hole of the generator 10 using sealing glue, the coaxial arrangement of the first through-hole 3 and the second through-hole 4 facilitates the discharge of hydrogen from the screw sleeve, effectively preventing the hydrogen from blowing away the sealing glue, ensuring the adhesion of the screw sleeve to the generator 10, and at the same time ensuring that the sealing glue has sufficient time to cure, thereby enhancing the leak-proof effect.

[0036] A number of blocking balls 5 are provided in the second through hole 4. The material of the blocking balls 5 is HDJ-892 sealant. The blocking balls 5 are transitionally matched with the second through hole 4. The space occupied by the multiple blocking balls 5 is two-thirds of the length of the second through hole 4. A first sealing portion 6 is provided on the inner wall of the sealing component 2, and a second sealing portion 8 is provided on the screw rod 7. The first sealing portion 6 and the second sealing portion 8 fit together. The length of the screw rod 7 is at least one-third of the length of the second through hole 4. Specifically, the first sealing portion 6 is an internal thread, and the second sealing portion 8 is an external thread. Both the internal thread and the external thread are fine threads. Preferably, the internal thread is a rectangular thread, which is convenient for fastening the screw rod 7 to the screw sleeve, which is beneficial to the sealing of hydrogen. In the present embodiment, the internal thread is M8, and the diameter of the blocking ball 5 is 8mm.

[0037] An adjusting portion 9 is provided at one end of the screw rod 7 away from the hydrogen leakage hole. The adjusting portion 9 can be a handle to facilitate the operator to fix the screw rod 7 in the second through hole 4. The operator can also use a tool such as a wrench to fix the screw rod 7 in the second through hole 4.

[0038] The screw sleeve, the screw rod 7 and the sealing ball 5 of the utility model cooperate with each other, and can quickly and effectively seal the hydrogen leakage hole of the generator 10, with small construction workload, convenient operation, high safety and economy.

[0039] The working principle of this utility model:

[0040] During use, after the hydrogen leak hole of the generator 10 is cleaned, the fixing base 1 of the screw sleeve is fixed to the generator 10 with sealing glue. Hydrogen is discharged from the first through hole 3 and the second through hole 4, which is conducive to the curing of the sealing glue. After the sealing glue is cured, multiple sealing balls 5 are sequentially filled into the second through hole 4 from the right end of the screw sleeve. The space occupied by the multiple sealing balls 5 is approximately two-thirds of the length of the second through hole 4. Then, the screw 7 is inserted into the second through hole 4 for sealing. The length of the screw 7 in the second through hole 4 is approximately one-third of the length of the second through hole 4. After using the leak-proof bolt of the utility model to seal the hydrogen leak hole of the generator, the operator can use soapy water to check the hydrogen leakage.

[0041] Regarding the specific structure of the present invention, it should be noted that the connection relationship between the various component modules adopted in the present invention is definite and feasible. Except for the special instructions in the embodiments, the specific connection relationship can bring about corresponding technical effects and solve the technical problems raised by the present invention without relying on the execution of the corresponding software program. The components, modules, models of specific components appearing in the present invention, the connection methods between each other, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, except for the specific instructions, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technology and common knowledge in this field, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete, and feasible, and the corresponding physical products can be reproduced or obtained based on this technical means.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick-stop bolt for hydrogen leakage in generators, characterized by: It comprises a screw sleeve and a screw rod (7) that cooperates with the screw sleeve, the screw sleeve comprises a fixing seat (1), one end of the fixing seat (1) is fixedly connected to a sealing component (2), the fixing seat (1) and the sealing component (2) are integrally arranged, and the other end of the fixing seat (1) is fixedly connected to the hydrogen leakage hole through a sealing glue; The fixing seat (1) is provided with a first through hole (3), and the first through hole (3) is coaxially arranged with the hydrogen leakage hole; The sealing component (2) is provided with a second through hole (4), and the first through hole (3), the second through hole (4) and the screw (7) are coaxially arranged; A plurality of blocking balls (5) are arranged in the second through hole (4), and the blocking balls (5) are in transitional fit with the second through hole (4); A first sealing portion (6) is provided on the inner wall of the sealing component (2), and a second sealing portion (8) is provided on the screw (7), wherein the first sealing portion (6) and the second sealing portion (8) fit together.

2. A generator hydrogen leakage quick plugging bolt according to claim 1, characterized in that: The first sealing portion (6) is an internal thread, and the second sealing portion (8) is an external thread, and both the internal thread and the external thread are fine threads.

3. A generator hydrogen leakage quick plugging bolt according to claim 1, characterized in that: The diameter of the fixing seat (1) is greater than the diameter of the sealing component (2).

4. A generator hydrogen leakage quick plugging bolt according to claim 1, characterized in that: The space occupied by the plurality of blocking balls (5) is two-thirds of the length of the second through hole (4).

5. The generator hydrogen leakage quick plugging bolt according to claim 1, characterized in that: The length of the screw (7) is at least one third of the length of the second through hole (4).

6. A generator hydrogen leakage quick plugging bolt according to claim 1, characterized in that: An adjusting portion (9) is provided at one end of the screw (7) away from the hydrogen leakage hole.

7. The generator hydrogen leakage quick plugging bolt according to claim 1, characterized in that: The sealing glue is A\B glue.

8. The generator hydrogen leakage quick plugging bolt according to claim 2, characterized in that: The internal thread is a rectangular thread.

9. The generator hydrogen leakage quick plugging bolt according to claim 1, characterized in that: The material of the blocking ball (5) is HDJ-892 sealant.

10. The generator hydrogen leakage quick plugging bolt according to claim 2, characterized in that: The internal thread is M8, and the diameter of the blocking ball (5) is 8 mm.

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