Flexible connector for drawer cabinet of nuclear power station
By designing flexible connectors in the drawer cabinets of nuclear power plants, and utilizing movable gaps and reset elastic elements, the problem of poor contact between plugs and sockets in vibration environments was solved, achieving reliable conductive connection between plugs and sockets and avoiding power outage accidents.
Patent Information
- Application Number
- CN202520371451.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-05
AI Technical Summary
In existing nuclear power plant cabinets, the plugs and sockets are prone to loosening due to mechanical vibration in a vibrating environment, which can lead to poor contact or disconnection and cause power outages. Furthermore, long-term use may result in jamming and wear.
Design a flexible connector that achieves a flexible connection between a plug and a socket by setting an movable gap and a reset elastic element between the mounting plate and the base plate, ensuring that the conductive connection is maintained under vibration conditions.
It effectively avoids power outages caused by vibration, improves the reliability and shock resistance of plugs and sockets, and extends the service life of equipment.
Smart Images
Figure CN223942123U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nuclear power plant drawer cabinets, and further to a flexible connector for nuclear power plant drawer cabinets. Background Technology
[0002] Low-voltage drawer cabinets, as key equipment in low-voltage power distribution systems, have undergone years of technological evolution, becoming increasingly modular and standardized. Drawer connectors are a crucial technology in low-voltage drawer cabinets, their performance determining the reliability of the power distribution equipment. Existing drawer connectors, due to certain manufacturing errors, may not guarantee that the plug on the drawer and the socket on the cabinet are aligned. Over time, this can lead to jamming and wear, resulting in difficulty in plugging and unplugging. Furthermore, in the event of an earthquake or in a vibrating environment, the connection between the plug and connector may loosen mechanically, causing poor contact or accidental disconnection, leading to power outages or fires. Utility Model Content
[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide a flexible connector for a nuclear power plant drawer cabinet. A first movable gap is provided between the inner sidewall of the first mounting hole and the outer sidewall of the fixing member, and a second movable gap is provided between the mounting plate and the base plate. This allows the mounting plate to move relative to the base plate both radially and axially along the first mounting hole, enabling a flexible connection between the plug and the socket. The conductive connection between the plug and the socket will not be broken due to external vibration, avoiding power outages caused by external vibrations. This prevents power outages when nuclear power equipment encounters external vibrations.
[0004] To achieve the above objectives, this utility model provides a flexible connector for a nuclear power plant drawer cabinet, comprising a mounting plate, a base plate, and a fixing member. The mounting plate is adapted to be provided with a plug or socket, and the mounting plate is also provided with a plurality of first mounting holes. The fixing member is adapted to pass through the first mounting holes and fix the mounting plate thereto. A first movable gap is provided between the inner sidewall of the first mounting hole and the outer sidewall of the fixing member. The mounting plate is movable relative to the base plate in the radial direction along the first mounting hole. A second movable gap is provided between the mounting plate and the base plate. The mounting plate is movable relative to the base plate in the axial direction along the first mounting hole.
[0005] In some embodiments, the fastener includes an abutting portion, a movable portion, and a mounting portion. The movable portion connects the abutting portion and the mounting portion. The abutting portion is adapted to abut against the side of the mounting plate away from the substrate. The mounting portion is adapted to be fixedly connected to the substrate. The diameter of the movable portion is smaller than the diameter of the first mounting hole, such that the first movable gap is provided between the outer wall of the movable portion and the inner wall of the first mounting hole.
[0006] In some embodiments, the distance between the abutment portion and the substrate is greater than the thickness of the mounting plate, such that a second movable gap is provided between the mounting plate and the substrate.
[0007] In some embodiments, a reset elastic element is also included, which is elastically connected between the mounting plate and the substrate.
[0008] In some embodiments, the reset elastic element includes a reset spring sleeved on the outside of the movable portion, and the reset spring is adapted to elastically abut against an adjacent side of the mounting plate and the substrate.
[0009] In some embodiments, the substrate is further provided with a second mounting hole and a locking nut. The mounting part passes through the second mounting hole and is locked by the locking nut. A third movable gap is also provided between the outer side wall of the mounting part and the inner side wall of the second mounting hole, so that the fixing member can move relative to the substrate along the radial direction of the first mounting hole.
[0010] In some embodiments, the substrate is further provided with a second mounting hole and a floating nut. The floating nut is disposed on the substrate, and the mounting part passes through the second mounting hole and is fixedly connected to the floating ring inside the floating nut, so that the fixing member can move relative to the substrate along the radial direction of the first mounting hole.
[0011] In some embodiments, the mounting plate is further provided with a guide pin and a guide sleeve, the guide pin being adapted to be inserted into the guide sleeve.
[0012] In some embodiments, the fasteners are disposed at the four corners of the mounting plate, the mounting plate is provided with movable channels, the movable channels are adapted to install plugs or sockets, and a fourth movable gap is provided between the inner sidewall of the movable channel and the outer sidewall of the plug or socket.
[0013] Compared with the prior art, the flexible connector for nuclear power plant drawer cabinets provided by this utility model has at least one of the following beneficial effects:
[0014] 1. A first movable gap is provided between the inner sidewall of the first mounting hole and the outer sidewall of the fixing member, and a second movable gap is provided between the mounting plate and the base plate, so that the mounting plate can move relative to the base plate in both the radial and axial directions along the first mounting hole, thereby realizing a flexible connection between the plug and the socket. The conductive connection between the plug and the socket will not be broken due to external vibration, avoiding power outage caused by external vibration, thus preventing power outage accidents when nuclear power equipment encounters external vibration.
[0015] 2. The reset elastic element elastically connects the mounting plate and the base plate, giving the mounting plate a certain elastic margin relative to the base plate. When external vibration occurs, the mounting plate can reciprocate along the first mounting hole axially through the vibration inertial force of the mounting plate and the rebound force of the reset elastic element, so that the plug and socket can always maintain a reliable flexible connection during vibration. Moreover, the reset elastic element can provide a reverse force to the mounting plate, so that the plug and socket always have a mutual close and conductive insertion force.
[0016] 3. The fastener can also move relative to the substrate in the radial direction of the first mounting hole. When the movement of the mounting plate in the radial direction of the first mounting hole reaches its limit, the fastener and the mounting plate can move together relative to the substrate in the radial direction of the first mounting hole to provide a larger radial deformation space for the mounting plate and further improve the shock resistance of the flexible connector. Attached Figure Description
[0017] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.
[0018] Figure 1 This is an overall diagram of a flexible connector used in the drawer cabinets of a nuclear power plant;
[0019] Figure 2 This is a cross-sectional view of the secondary plug-in;
[0020] Figure 3 This is a location diagram of the fourth activity interval.
[0021] Explanation of icon numbers:
[0022] Primary plug-in 1, mounting plate 11, first movable gap 112, second movable gap 113, guide pin 114, guide sleeve 115, fourth movable gap 116, base plate 12, second mounting hole 121, fastener 13, movable part 132, reset elastic element 134, secondary plug-in 2. Detailed Implementation
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0024] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0025] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
[0028] refer to Figure 1 and Figure 2 This utility model provides a flexible connector for a nuclear power plant drawer cabinet, including a mounting plate 11, a base plate 12, and a fixing member 13. The mounting plate 11 is adapted to be provided with a plug or socket, and the mounting plate 11 is also provided with a plurality of first mounting holes. The fixing member 13 is adapted to be fixedly connected to the mounting plate 11 after passing through the first mounting holes. A first movable gap 112 is provided between the inner side wall of the first mounting hole and the outer side wall of the fixing member 13. The mounting plate 11 can move relative to the base plate 12 in the radial direction along the first mounting hole. A second movable gap 113 is provided between the mounting plate 11 and the base plate 12. The mounting plate 11 can move relative to the base plate 12 in the axial direction along the first mounting hole.
[0029] In this embodiment, a first movable gap 112 is provided between the inner sidewall of the first mounting hole and the outer sidewall of the fixing member 13, and a second movable gap 113 is provided between the mounting plate 11 and the base plate 12, so that the mounting plate 11 can move relative to the base plate 12 in both the radial and axial directions along the first mounting hole, which can realize the flexible connection between the plug and the socket. The conductive connection between the plug and the socket will not be broken due to external vibration, thus avoiding the occurrence of power failure caused by external vibration, thereby preventing power failure accidents when nuclear power equipment encounters external vibration.
[0030] Specifically, taking a single-insertion plug 1 as an example, a plug is mounted on the mounting plate 11 of one substrate 12, and a socket is mounted on the mounting plate 11 of another substrate 12. Each mounting plate 11 is provided with a first mounting hole. A fixing member 13 passes through the first mounting hole and is fixedly connected to the mounting plate 11. The fixing member 13 includes an abutment part, a movable part 132, and a mounting part. The movable part 132 connects the abutment part and the mounting part. The abutment part is adapted to abut against the side of the mounting plate 11 away from the substrate 12. The mounting part is adapted to fixally connect to the substrate 12. The diameter of the movable part 132 is smaller than the diameter of the first mounting hole, so that a first movable gap 112 is provided between the outer wall of the movable part 132 and the inner wall of the first mounting hole. The distance between the abutment part and the substrate 12 is greater than the thickness of the mounting plate 11, so that a second movable gap 113 is provided between the mounting plate 11 and the substrate 12. When the plug and socket are connected, the device is energized. If external vibration occurs, the mounting plate 11 will move radially and axially along the first mounting hole, ensuring that the plug and socket can adjust to each other within a certain range. This allows the socket and plug on the mounting plate 11 to maintain effective connection radially and axially along the first mounting hole, providing a shock-resistant effect. In this embodiment, the diameter of the abutting part of the fixing member 13 is larger than the diameter of the movable part 132, allowing the abutting part to abut against the side of the mounting plate 11 away from the base plate 12. The diameter of the mounting part is smaller than the diameter of the movable part 132. The end of the movable part 132 abuts against the side of the base plate 12 closest to the mounting plate 11. The portion of the movable part 132 extending out of the base plate 12 is locked by a fixing nut, allowing the fixing member 13 to be fixedly installed on the base plate 12. This fixing member 13 can also be understood as a sliding post, with the mounting plate 11 flexibly mounted on the outside of the sliding post, meaning the mounting plate 11 is suitable for moving left, right, up, down, back, and forth on this sliding post.
[0031] In this application, the fastener 13 passes through the first mounting hole and is fixedly connected to the substrate 12. A first movable gap 112 is provided between the first mounting hole of the mounting plate 11 and the fastener 13, allowing the mounting plate 11 to move radially relative to the fastener 13 in the first mounting hole, thereby allowing the mounting plate 11 to move radially relative to the substrate 12 in the first mounting hole. In a modified embodiment, the fastener 13 can also pass through the second mounting hole 121 of the substrate 12 and be fixedly connected to the mounting plate 11. In this case, the mounting plate 11 and the fastener 13 are considered as a whole, and the mounting plate 11 and the fastener 13 move together radially relative to the substrate 12 along the second mounting hole 121. In the following embodiments, the mounting plate 11 can also have two movable spaces, that is, the mounting plate 11 can move radially relative to the fastener 13 along the first mounting hole, and the fastener 13 can move radially relative to the substrate 12 along the second mounting hole 121, thereby increasing the range of motion of the mounting plate 11 in the first mounting hole and improving its shock resistance.
[0032] It is worth noting that the mounting plate 11 is also provided with a guide pin 114 and a guide sleeve 115, with the guide pin 114 adapted to insert into the guide sleeve 115. When the plug is pushed into the socket, the guide pin 114 and the guide sleeve 115 ensure the straightness of the center of the plug and the socket during installation. Specifically, the guide pin 114 and the guide sleeve 115 are respectively on the left and right sides of the mounting plate 11, and the guide pin 114 of one mounting plate 11 is matched and connected to the guide sleeve 115 of the other mounting plate 11.
[0033] Preferably, refer to Figure 3 The fixing members 13 are located at the four corners of the mounting plate 11, making the connection between the mounting plate 11 and the base plate 12 more stable and effective. The mounting plate 11 is provided with movable channels, which are suitable for installing plugs or sockets. A fourth movable gap 116 is also provided between the inner sidewall of the movable channel and the outer sidewall of the plug or socket. In this embodiment, the fourth movable gap 116 is also provided between the inner sidewall of the movable channel and the outer sidewall of the plug or socket to prevent the plug and socket from hitting the mounting plate 11 during movement, which would cause damage to the mounting plate 11, the plug or socket, and improve the safety performance of the flexible connector.
[0034] Furthermore, it also includes a reset elastic member 134, which is elastically connected between the mounting plate 11 and the base plate 12, so that the mounting plate 11 can reciprocate relative to the base plate 12 according to external vibrations.
[0035] In this embodiment, the reset elastic element 134 elastically connects the mounting plate 11 and the substrate 12, so that the mounting plate 11 has a certain elastic margin relative to the substrate 12. When external vibration occurs, the mounting plate 11 can reciprocate along the first mounting hole axially through the vibration inertial force of the mounting plate 11 and the rebound force of the reset elastic element 134, so that the plug and socket can always maintain a reliable flexible connection during vibration; moreover, the reset elastic element 134 can provide a reverse force to the mounting plate 11, so that the plug and socket always have a mutual close and conductive insertion force.
[0036] Specifically, in the previous embodiment, the second movable gap 113 between the mounting plate 11 and the base plate 12 is relatively small. The reset elastic element 134 is disposed between the mounting plate 11 and the base plate 12. The reset elastic element 134 can be an elastic structure such as an elastic washer. This reset elastic element 134 mainly plays a certain role in buffering and movable deformation, so that the mounting plate 11 can reciprocate within a small range in the radial direction of the first mounting hole. In another embodiment, if it is necessary to resist greater earthquake vibrations, the mounting plate 11 needs a larger elastic space along the axial direction of the first mounting hole, that is, the second movable gap 113 between the mounting plate 11 and the base plate 12 needs to be large. At this time, the axial length of the fixing member 13 is also relatively long. The reset elastic element 134 can be a reset spring. The reset spring is sleeved on the outside of the fixing member 13 and elastically connects the base plate 12 and the mounting plate 11. In this way, the mounting plate 11 can have a larger range of reciprocating motion space in the axial direction of the first mounting hole. The mounting plate 11 has a large flexible motion space relative to the base plate 12, which can offset the vibration of large earthquakes. In this embodiment, taking the secondary plug-in 2 as an example, the distance between the mounting plate 11 and the base plate 12 is much greater than the thickness of the mounting plate 11; that is, the length of the movable part 132 is much greater than the axial length of the first mounting hole of the mounting plate 11. A return spring is sleeved on the outside of the movable part 132 and is suitable for elastically connecting adjacent sides of the mounting plate 11 and the base plate 12. Under normal conditions, the return spring releases its elastic force, ensuring that the plug and socket remain tightly connected. If external vibration occurs, the plug and socket generate inertial force and compress the return spring, maintaining a reliable flexible connection. After the inertial force of the plug and socket is overcome, the return spring releases its elastic force to reset the plug and socket. At this time, the plug and socket together will have a certain amount of floating or elastic variation margin relative to the base plate. During the movement of the plug and socket, the return spring also provides a mutual engagement force to ensure that the plug and socket do not separate, effectively providing shock resistance and preventing power outages caused by external vibrations. This ensures that nuclear power equipment will not experience power outages when encountering external vibrations. Of course, the return spring may not be sleeved on the movable part 132 of the fixing member 13, but may be arranged parallel to the movable part 132. This application does not make further limitations here.
[0037] It is worth noting that, generally speaking, primary plug-in 1 uses a smaller second movable gap 113, and it does not require a reset elastic element 134. This is because primary plug-in 1 is mainly used for high-current and high-voltage connections in the main circuit. Primary plug-in 1 typically adopts a stacked assembly structure with self-compensation function; the clamping force increases with the increase of short-circuit current, ensuring that no rejection fault occurs under high current. Secondary plug-in 2, on the other hand, is used for low-current and low-voltage signal transmission in the control circuit. Its structure is relatively simple and flexible, and its design focuses more on signal stability and reliability. Secondary plug-in 2 can use a larger second movable gap 113 and a reset elastic element 134. In this embodiment, secondary plug-in 2 uses a larger second movable gap 113, while primary plug-in 1 uses a smaller second movable gap 113, allowing secondary plug-in 2 and primary plug-in 1 to be staggered relative to each other, avoiding mutual electrical interference and improving safety.
[0038] Furthermore, the fixing member 13 can also move relative to the substrate 12 in the radial direction of the first mounting hole. When the movement of the mounting plate 11 in the radial direction of the first mounting hole reaches its limit, the fixing member 13 moves in the radial direction of the first mounting hole, so that the mounting plate 11 can move relative to the substrate 12 in the radial direction of the first mounting hole again, so as to provide a larger radial deformation space for the mounting plate 11 and further improve the shock resistance of the flexible connector.
[0039] Specifically, the substrate 12 is further provided with a second mounting hole 121 and a locking nut. The mounting part passes through the second mounting hole 121 and is locked by the locking nut. A third movable gap is also provided between the outer wall of the mounting part and the inner wall of the second mounting hole 121, so that the fixing member 13 and the mounting plate 11 can move relative to the substrate 12 along the radial direction of the first mounting hole. In this embodiment, the movement mode of the fixing member 13 is consistent with the movement direction of the mounting plate 11. In a modified embodiment, the locking nut is made of an elastic material with a certain elastic deformation coefficient.
[0040] In another modified embodiment, the substrate 12 is further provided with a second mounting hole 121 and a floating nut. The floating nut is disposed on the substrate 12, and the mounting part passes through the second mounting hole 121 and is fixedly connected to the floating ring inside the floating nut, so that the fixing member 13 and the mounting plate 11 can move relative to the substrate 12 along the radial direction of the first mounting hole. The floating nut is a combination nut, and its main principle is to use its internal floating gap and elastic structure to compensate for the error of the mounting hole. Its outer shell is circular, and one end of the outer shell has embossed teeth and guide grooves. It is fixed by pressing into the second mounting hole 121 of the substrate 12 through the embossed teeth. A nut is also embedded inside. This design allows the floating nut to move freely within a certain range to adapt to different mechanical movements. It is worth noting that the floating nut is a common technology in the field of thin plates or sheet metal, and will not be described further in this application.
[0041] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A flexible connector for a nuclear power plant drawer cabinet, characterized in that, The device includes a mounting plate, a base plate, and a fixing member. The mounting plate is adapted to be provided with a plug or socket. The mounting plate is also provided with a plurality of first mounting holes. The fixing member is adapted to pass through the first mounting holes and fix the mounting plate thereto. A first movable gap is provided between the inner sidewall of the first mounting hole and the outer sidewall of the fixing member. The mounting plate can move relative to the base plate in the radial direction along the first mounting hole. A second movable gap is provided between the mounting plate and the base plate. The mounting plate can move relative to the base plate in the axial direction along the first mounting hole.
2. A flexible connector for a nuclear power plant drawer cabinet according to claim 1, characterized in that, The fastener includes an abutting part, a movable part, and a mounting part. The movable part connects the abutting part and the mounting part. The abutting part is adapted to abut against the side of the mounting plate away from the substrate. The mounting part is adapted to be fixedly connected to the substrate. The diameter of the movable part is smaller than the diameter of the first mounting hole, so that the first movable gap is provided between the outer wall of the movable part and the inner wall of the first mounting hole.
3. A flexible connector for a nuclear power plant drawer cabinet according to claim 2, characterized in that, The distance between the abutting portion and the substrate is greater than the thickness of the mounting plate, so that the second movable gap is provided between the mounting plate and the substrate.
4. A flexible connector for a nuclear power plant drawer cabinet according to claim 3, characterized in that, It also includes a reset elastic element, which is elastically connected between the mounting plate and the substrate.
5. A flexible connector for a nuclear power plant drawer cabinet according to claim 4, characterized in that, The reset elastic element includes a reset spring, which is sleeved on the outside of the movable part and is adapted to elastically abut against the adjacent side of the mounting plate and the base plate.
6. A flexible connector for a nuclear power plant drawer cabinet according to any one of claims 2-5, characterized in that, The substrate is also provided with a second mounting hole and a locking nut. The mounting part passes through the second mounting hole and is locked by the locking nut. A third movable gap is also provided between the outer side wall of the mounting part and the inner side wall of the second mounting hole, so that the fixing member can move relative to the substrate along the radial direction of the first mounting hole.
7. A flexible connector for a nuclear power plant drawer cabinet according to any one of claims 2-5, characterized in that, The substrate is also provided with a second mounting hole and a floating nut. The floating nut is disposed on the substrate. The mounting part passes through the second mounting hole and is fixedly connected to the floating ring inside the floating nut, so that the fixing member can move relative to the substrate along the radial direction of the first mounting hole.
8. A flexible connector for a nuclear power plant drawer cabinet according to any one of claims 1-5, characterized in that, The mounting plate is also provided with a guide pin and a guide sleeve, the guide pin being adapted to be inserted into the guide sleeve.
9. A flexible connector for a nuclear power plant drawer cabinet according to claim 8, characterized in that, The fasteners are located at the four corners of the mounting plate. The mounting plate has movable channels, which are suitable for installing plugs or sockets. A fourth movable gap is also provided between the inner wall of the movable channel and the outer wall of the plug or socket.