Generator lead connector fixing device

Abstract

The utility model provides a generator lead wire joint fixing device comprising a first pressing plate which abuts against a flexible connection joint; the second pressing plate abuts against the copper bar to be combined; the fixing assembly comprises a bolt and a nut, the bolt penetrates through the first pressing plate, the flexible connection joint, the copper bar handle and the second pressing plate, and the nut is in threaded connection with the bolt; an anti-loosening assembly is arranged between the second pressing plate and the nut and used for preventing the nut from loosening. The first pressing plate and the second pressing plate are located on the outer side of the joint of the flexible connector and the copper bar, so that pressing force of the bolt and the nut directly acts on the first pressing plate and the second pressing plate, the first pressing plate and the flexible connector are in tight surface contact, and meanwhile the second pressing plate and the copper bar are in tight surface contact. The stress area of the copper bar joint and the flexible connection joint is increased, and local stress deformation of the copper bar joint and the flexible connection joint is avoided, so that the stability of electrical connection of the copper bar joint and the flexible connection joint is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fixing device, in particular to a generator lead joint fixing device. BACKGROUND

[0002] At present, in the structure of the steam turbine generator, the main outgoing line and the center point outgoing line are important channels for transmitting the electric energy generated inside the generator to the external power grid. These outgoing lines are usually connected by copper bars to ensure stable transmission of electric energy, and the soft connection joint outgoing structure plays a role in reliably connecting the outgoing lines and the copper bars. The soft connection joint outgoing structure is connected with the copper bars and abuts against each other, and the soft connection outgoing structure and the outgoing copper bars are connected by stainless steel bolts and nuts. Since the pressing area of the nuts and bolts is small, the copper bars and the soft connection joint are deformed under stress, which causes poor electrical connection contact between the two, affecting the normal operation of the generator. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the purpose of the present application is to provide a generator lead joint fixing device to solve the problem of poor electrical connection contact between the copper bars and the soft connection joint caused by the use of bolts and nuts to fix the soft connection joint and the copper bars.

[0004] In order to achieve the above purpose, the present application provides a generator lead joint fixing device, which comprises:

[0005] A first pressing plate abuts against the soft connection joint;

[0006] A second pressing plate abuts against the copper bars;

[0007] A fixing assembly comprising a bolt and a nut, the bolt penetrating the first pressing plate, the soft connection joint, the copper bars and the second pressing plate, and the nut being threadedly connected with the bolt;

[0008] A loosening prevention assembly is arranged between the second pressing plate and the nut to prevent the nut from loosening.

[0009] Optionally, a loosening prevention assembly is arranged between the second pressing plate and the nut to prevent the nut from loosening.

[0010] Optionally, the loosening prevention assembly comprises a first limiting tooth and a second limiting tooth, the first limiting tooth being arranged on the second pressing plate, and the second limiting tooth being arranged on the nut, and the first limiting tooth and the second limiting tooth being engaged.

[0011] Optionally, the top of the bolt is provided with a spring, one end of the spring abutting against the head of the bolt, and the other end abutting against the first pressing plate, and the position of the bolt is adjusted by compressing the spring so that the first limiting tooth and the second limiting tooth are engaged.

[0012] Optionally, the first pressing plate is fixedly connected with a limiting fence away from one side of the second pressing plate, and the spring is located in the limiting fence.

[0013] Optionally, both sides of the first pressing plate are provided with limiting fences, and the limiting fences abut against the side edges of the soft connection joint, the copper bar joint and the second pressing plate, so that the side edges of the first pressing plate, the soft connection joint, the copper bar joint and the second pressing plate are aligned.

[0014] Optionally, the limiting fence is clamped with the bolt head to limit the rotation of the bolt.

[0015] Optionally, the first pressing plate and the second pressing plate are insulating plates.

[0016] As can be seen from the above, the generator lead joint fixing device provided by the application comprises a first pressing plate, a second pressing plate and a fixing assembly, the fixing assembly comprises a bolt and a nut, the first pressing plate abuts against a soft connection joint, the second pressing plate abuts against a copper bar joint, the bolt passes through the first pressing plate, the soft connection joint, the copper bar joint and the second pressing plate and is connected with the nut to complete the fixation of the first pressing plate, the soft connection joint, the copper bar joint and the second pressing plate, since the first pressing plate and the second pressing plate are located outside the soft connection joint and the copper bar joint, the pressing force of the bolt and the nut directly acts on the first pressing plate and the second pressing plate, so that the first pressing plate has a close surface contact with the soft connection joint, and at the same time, the second pressing plate has a close surface contact with the copper bar joint, the stress area of the copper bar joint and the soft connection joint is increased, local stress deformation of the copper bar joint and the soft connection joint is avoided, and the stability of the electrical connection between the two is increased; a loosening prevention assembly is arranged between the second pressing plate and the nut to prevent loosening of the nut and improve the long-term stability of the connection of the bolt and the nut. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the application or related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0018] Figure 1 The structure schematic diagram of the embodiment of the application;

[0019] Figure 2 The exploded view of the spring of the embodiment of the application;

[0020] Figure 3 The exploded view of the first limiting tooth of the embodiment of the application;

[0021] Figure 4 is a sectional view of the embodiment of the present application.

[0022] Fig. 1 is a first pressing plate; 11, a flexible connection joint; 2, a second pressing plate; 21, a copper bar joint; 3, a fixing assembly; 31, a bolt; 32, a nut; 4, an anti-loosening assembly; 41, a first limiting tooth; 42, a second limiting tooth; 5, a spring; 6, a limiting fence; 7, a limiting baffle. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application is further described in detail below in combination with specific embodiments and with reference to the drawings.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects listed before the terms cover the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute positions of the described objects change.

[0025] Based on the background, in the current field of hydroelectric power generation, the design and manufacturing technology of large hydroelectric generators is constantly advancing to meet the demand for more efficient and stable power production. The electrical connection part of the generator is one of the key links to ensure its performance, especially the connection method of the main outgoing line and the center point outgoing line, which directly affects the current transmission efficiency and operation stability of the generator. Currently, in the structure of the steam turbine generator, the main outgoing line and the center point outgoing line are important channels for transmitting the electrical energy generated inside the generator to the external power grid. These outgoing lines are usually connected by copper bar joints to ensure stable transmission of electrical energy, and the flexible connection joint structure plays a role in reliably connecting these outgoing lines with the copper bar joint. The flexible connection joint structure is usually made of copper, which has good flexibility and adaptability, and can reduce the impact of vibration on line connection, so it has been widely used in large hydroelectric generators;

[0026] In actual use, the flexible connector lead-out structure abuts the copper busbar, typically secured with stainless steel bolts and nuts. However, due to the relatively small compression area between the nuts and bolts, uneven force can cause local deformation of the copper busbar and the flexible connector over long-term use. This deformation not only reduces the electrical contact area but can also increase contact resistance, leading to overheating. In severe cases, this can even affect the normal operation of the generator, reduce power generation efficiency, and even cause a shutdown.

[0027] In order to solve the above problems, the present application provides a generator lead connector fixing device to solve the problem of poor electrical contact between the copper busbar and the flexible connection connector caused by using bolts and nuts to fix the flexible connection connector and the copper busbar.

[0028] The following is combined with Figures 1-4 The embodiments of the present application will be described in detail.

[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, a generator lead connector fixing device includes:

[0030] A first pressing plate 1 , the first pressing plate 1 abutting against the flexible connection joint 11 ;

[0031] A second pressing plate 2, the second pressing plate 2 abuts against the copper busbar handle 21;

[0032] The fixing assembly 3 includes a bolt 31 and a nut 32. The bolt 31 passes through the first pressing plate 1, the flexible connection joint 11, the copper busbar handle 21 and the second pressing plate 2. The nut 32 is threadedly connected to the bolt 31.

[0033] An anti-loosening component 4 is provided between the second pressing plate 2 and the nut 32 to prevent the nut 32 from loosening.

[0034] Specifically, the flexible connector 11 abuts the copper busbar handle 21, the first pressure plate 1 abuts the side of the flexible connector 11 away from the copper busbar handle 21, and the second pressure plate 2 abuts the side of the copper busbar handle 21 away from the flexible connector 11, that is, the flexible connector 11 and the copper busbar handle 21 are located between the first pressure plate 1 and the second pressure plate 2. The first pressure plate 1 and the second pressure plate 2 are insulating plates, which can be made of the following insulating materials, such as polyvinyl chloride polymer material, polyethylene polymer material, and polytetrafluoroethylene polymer material. These insulating materials can effectively isolate current and ensure the safety of the electrical connection between the flexible connector 11 and the copper busbar handle 21.

[0035] In addition, the first pressing plate 1, the soft connection joint 11, the copper bar clamp 21 and the second pressing plate 2 are symmetrically provided with connecting holes, the bolt 31 passes through the connecting holes of the first pressing plate 1, the soft connection joint 11, the copper bar clamp 21 and the second pressing plate 2 in sequence, and the nut 32 is threadedly connected with the bolt 31 and abuts against the second pressing plate 2 to fix the first pressing plate 1, the soft connection joint 11, the copper bar clamp 21 and the second pressing plate 2.

[0036] In the embodiment, the first pressing plate 1 abuts against the soft connection joint 11, the second pressing plate 2 abuts against the copper bar clamp 21, the bolt 31 passes through the first pressing plate 1, the soft connection joint 11, the copper bar clamp 21 and the second pressing plate 2 and is connected with the nut 32 to fix the first pressing plate 1, the soft connection joint 11, the copper bar clamp 21 and the second pressing plate 2. Since the first pressing plate 1 and the second pressing plate 2 are located outside the soft connection joint 11 and the copper bar clamp 21, the pressing force of the bolt 31 and the nut 32 directly acts on the first pressing plate 1 and the second pressing plate 2, so that the first pressing plate 1 has a close surface contact with the soft connection joint 11 and the second pressing plate 2 has a close surface contact with the copper bar clamp 21, the force bearing area of the copper bar clamp 21 and the soft connection joint 11 is increased, local force deformation of the copper bar clamp 21 and the soft connection joint 11 is avoided, and the stability of the electrical connection between the copper bar clamp 21 and the soft connection joint 11 is increased. The anti-loosening assembly 4 is arranged between the second pressing plate 2 and the nut 32 to prevent loosening of the nut 32 and improve the long-term stability of the connection of the bolt 31 and the nut 32.

[0037] As shown in Figure 2 and Figure 3 In some embodiments, the anti-loosening assembly 4 includes first limiting teeth 41 and second limiting teeth 42, the first limiting teeth 41 are arranged on the second pressing plate 2, the second limiting teeth 42 are arranged on the nut 32, and the first limiting teeth 41 and the second limiting teeth 42 are engaged.

[0038] Specifically, the first limiting teeth 41 are arranged on one side of the second pressing plate 2 close to the nut 32, the second limiting teeth 42 are arranged on one side of the nut 32 close to the second pressing plate 2, the first limiting teeth 41 are uniformly arranged along the connecting hole on the second pressing plate 2, and the second limiting teeth 42 are uniformly arranged along the circumference of the nut 32, so that the first limiting teeth 41 and the second limiting teeth 42 can be closely and uniformly engaged together. The uniformly engaged first limiting teeth 41 and the second limiting teeth 42 form a stable connection structure, which effectively prevents loosening of the nut 32 under vibration or external force.

[0039] In addition, the first limiting tooth 41 can be triangular or trapezoidal, with the triangle or trapezoid having an appropriate inclination angle to facilitate engagement with the second limiting tooth 42. The shape of the second limiting tooth 42 matches the shape of the first limiting tooth 41 to ensure tight engagement. The first limiting tooth 41 and the second limiting tooth 42 are made of a high-strength, corrosion-resistant alloy material to enhance the durability and wear resistance of the anti-loosening assembly 4.

[0040] In this embodiment, the first limiting tooth 41 is provided on the second pressure plate 2, and the second limiting tooth 42 is provided on the nut 32. The first limiting tooth 41 and the second limiting tooth 42 are engaged with each other, which can prevent the nut 32 from loosening under a long-term vibration environment, thereby improving the long-term fixation of the first pressure plate 1, the flexible connection joint 11, the copper busbar handle 21 and the second pressure plate 2.

[0041] like Figure 2 and Figure 4 As shown, in some embodiments, a spring 5 is provided on the top of the bolt 31, one end of the spring 5 abuts against the head of the bolt 31, and the other end abuts against the first pressure plate 1. The position of the bolt 31 is adjusted by compressing the spring 5 so that the first limiting tooth 41 and the second limiting tooth 42 engage.

[0042] In this embodiment, when the first limiting tooth 41 and the second limiting tooth 42 are difficult to engage with each other, the first limiting tooth 41 and the second limiting tooth 42 are just engaged with each other by compressing the remainder of the spring 5. The spring 5 provides a flexible connection adjustment mechanism for the engagement of the first limiting tooth 41 and the second limiting tooth 42, thereby increasing the engagement efficiency of the first limiting tooth 41 and the second limiting tooth 42.

[0043] In some embodiments, a side of the first pressing plate 1 away from the second pressing plate 2 is fixedly connected to a limiting enclosure 6 , and the spring 5 is located inside the limiting enclosure 6 .

[0044] Specifically, the shape and size of the limiting enclosure 6 are determined based on the shape and size of the spring 5 and the amount of compression during operation. This ensures that the spring 5 does not generate excessive friction or collision with the limiting enclosure 6 during compression, and also prevents the spring 5 from being restricted due to a small enclosure space. The limiting enclosure 6 is made of an alloy material with good wear resistance and rigidity to withstand the pressure and frictional wear generated by the compression of the spring 5.

[0045] In this embodiment, the limiting enclosure 6 provides a protective space for the spring 5 to prevent it from being displaced or damaged under the action of external force, thereby ensuring the stability and reliability of the spring 5 when the position of the bolt 31 is adjusted.

[0046] In some embodiments, the limiting enclosure 6 is engaged with the head of the bolt 31 to limit the rotation of the bolt 31 .

[0047] Specifically, the limiting fence 6 is hexagonal to fit the head of the bolt 31 and limit the rotation of the bolt 31.

[0048] In the embodiment, the limiting fence 6 forms a clamping relationship with the head of the bolt 31, thereby limiting the rotation of the bolt 31, improving the stability of the bolt 31, avoiding loosening of the bolt 31 in the external vibration environment, and thus improving the stability of the fixing device.

[0049] In some embodiments, the first pressing plate 1 is provided with limiting fences 7 on both sides, which abut against the side edges of the soft connection joint 11, the copper bar junction 21 and the second pressing plate 2, so that the side edges of the first pressing plate 1, the soft connection joint 11, the copper bar junction 21 and the second pressing plate 2 are aligned.

[0050] In the embodiment, the limiting fences 7 abut against the side edges of the soft connection joint 11, the copper bar junction 21 and the second pressing plate 2, forming a stable frame, so that the side edges of these components can be automatically aligned during assembly, thereby facilitating the alignment of the connecting holes on these components, and further facilitating the fixation of these components by the bolt 31 and the nut 32, improving the fixation efficiency. The limiting fences 7 also limit the movement of these components, which helps to prevent misalignment or loosening of the components due to vibration, impact or other external forces during subsequent operation or use.

[0051] In summary, the generator lead joint fixing device provided by the application includes a first pressing plate 1, a second pressing plate 2 and a fixing assembly 3. The fixing assembly 3 includes a bolt 31 and a nut 32. The first pressing plate 1 abuts against a soft connection joint 11, and the second pressing plate 2 abuts against a copper bar junction 21. The bolt 31 passes through the first pressing plate 1, the soft connection joint 11, the copper bar junction 21 and the second pressing plate 2 to be connected with the nut 32, so as to fix the first pressing plate 1, the soft connection joint 11, the copper bar junction 21 and the second pressing plate 2. Since the first pressing plate 1 and the second pressing plate 2 are located on the outer sides of the soft connection joint 11 and the copper bar junction 21, the pressing force of the bolt 31 and the nut 32 directly acts on the first pressing plate 1 and the second pressing plate 2, so that the first pressing plate 1 has a close surface contact with the soft connection joint 11, and the second pressing plate 2 has a close surface contact with the copper bar junction 21, thereby increasing the stress area of the copper bar junction 21 and the soft connection joint 11, avoiding local stress deformation of the copper bar junction 21 and the soft connection joint 11, increasing the stability of the electrical connection between the two, reducing the risk of overheating of the copper bar junction 21 and the soft connection joint 11 due to poor contact, reducing the probability of unit tripping due to transverse difference protection action, and thus improving the safety and operation efficiency of the entire power generation system.

[0052] The anti-loosening assembly 4 in the application comprises a first limiting tooth 41 and a second limiting tooth 42, the first limiting tooth 41 is arranged on the second pressing plate 2, the second limiting tooth 42 is arranged on the nut 32, the first limiting tooth 41 and the second limiting tooth 42 are engaged, the nut 32 can be prevented from loosening in a long-term vibration environment, thereby improving the long-term fixation of the first pressing plate 1, the flexible connection joint 11, the copper bar closing 21 and the second pressing plate 2.

[0053] Those skilled in the art should understand that the discussion of the above embodiments is only exemplary, and is not intended to imply that the scope of the application is limited to these examples; under the idea of the application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the embodiments of the application as described above, which are not provided in details for the sake of brevity.

[0054] In addition, in order to simplify the description and discussion, and so as not to make the embodiments of the application difficult to understand, the well-known power / ground connections of integrated circuit chips and other components can or can not be shown in the provided drawings. In addition, the devices can be shown in the form of block diagrams in order to avoid making the embodiments of the application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the embodiments of the application are to be implemented (i.e. these details should be entirely within the understanding of those skilled in the art). Where specific details (e.g. circuits) are set forth in order to describe an exemplary embodiment of the application, it will be apparent to those skilled in the art that the embodiments of the application can be practiced without these specific details or with variations on these specific details. Therefore, these descriptions should be considered as illustrative rather than limiting.

[0055] Although the application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures can use the embodiments discussed.

[0056] The embodiments of the application are intended to cover all such alternatives, modifications and variations as falling within the broad scope of the application claimed. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the application should be included in the protection scope of the application.

Claims

1. A generator lead joint securing device, characterized by, The utility model relates to a kind of copper bar fixing structure, including: First pressing plate (1), the first pressing plate (1) abuts against soft connection joint (11); Second pressing plate (2), the second pressing plate (2) abuts against copper bar joint (21); Fixed assembly (3), including bolt (31) and nut (32), the bolt (31) is passed through the first pressing plate (1), soft connection joint (11), copper bar joint (21) and the second pressing plate (2), the nut (32) is threadedly connected with the bolt (31); Anti-loosening assembly (4) is equipped between the second pressing plate (2) and the nut (32), to prevent the nut (32) loose.

2. A generator lead joint securing device according to claim 1, wherein, The anti-loosening assembly (4) includes first limiting tooth (41) and second limiting tooth (42), the first limiting tooth (41) is equipped on the second pressing plate (2), the second limiting tooth (42) is equipped on the nut (32), the first limiting tooth (41) and the second limiting tooth (42) are engaged.

3. A generator lead joint securing device according to claim 2, wherein, The top of the bolt (31) is equipped with spring (5), one end of the spring (5) abuts against the bolt (31) head, the other end abuts against the first pressing plate (1), the position of the bolt (31) is adjusted by compressing the spring (5) so that the first limiting tooth (41) and the second limiting tooth (42) are engaged.

4. A generator lead joint securing device according to claim 3, wherein The side of the first pressing plate (1) away from the second pressing plate (2) is fixedly connected with limiting fence (6), and the spring (5) is located in the limiting fence (6).

5. A generator lead joint securing device according to claim 1, wherein Both sides of the first pressing plate (1) are equipped with limiting baffle (7), and the limiting baffle (7) abuts against soft connection joint (11), copper bar joint (21) and the side edge of the second pressing plate (2), so that the side edge of the first pressing plate (1), soft connection joint (11), copper bar joint (21) and the second pressing plate (2) is aligned.

6. A generator lead joint securing device according to claim 4, wherein, The limiting fence (6) is clamped with the bolt (31) head to limit the rotation of the bolt (31).

7. A generator lead joint securing device according to claim 1, wherein The first pressing plate (1) and the second pressing plate (2) are insulating plates.

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