A relay protection pressboard and a relay protection device

Abstract

The utility model relates to the technical field of power grid especially is a kind of relay protection pressure plate and relay protection device, including sealing mechanism, sealing mechanism inside is equipped with conducting mechanism, the movable end of conducting mechanism is fixedly connected with handle, the handle is rotatably connected with sealing mechanism;Sealing mechanism separates handle and conducting mechanism, fixed mechanism is equipped between the handle and sealing mechanism, sealing mechanism is equipped with observation window corresponding conducting mechanism;The fixed mechanism includes the clamping piece on sealing mechanism, the clamping piece is compatible with handle end, sealing mechanism can isolate dust, moisture and other impurities, avoid conducting mechanism short circuit or contact badly, separate handle and conducting mechanism simultaneously, prevent operator to contact conducting component, greatly promote power safety, limiting mechanism is through the mechanical limiting and spring engagement mode to the opening and closing of relay protection pressure plate is positioned, avoid changing the opening and closing state of relay protection pressure plate due to accidental touch.

Description

Technical Field

[0001] This utility model relates to the technical field of power grids, and in particular to a relay protection pressure plate and a relay protection device. Background Technology

[0002] As the core equipment for "identifying and handling" power system faults, relay protection devices inevitably include two types of key switchboards in their circuit design: functional switchboards and trip output switchboards. Functional switchboards are the core control switches for "whether the protection device's function is enabled or disabled," and must be specifically set according to the protection configuration. For example, in main transformer protection devices, there are subdivisions such as overcurrent protection switchboards, differential protection switchboards, zero-sequence protection switchboards, and non-electrical quantity protection (gas, temperature) switchboards. Each switchboard corresponds to a specific protection logic, and the enabling / disabling operation directly determines whether the protection function is connected to the system. Trip output switchboards, on the other hand, are the "command bridge" between the protection device and the circuit breaker actuator. They are usually subdivided according to the circuit breaker's controlled object, such as the trip output switchboard for the high-voltage side circuit breaker of the main transformer and the trip output switchboard for the low-voltage side circuit breaker. Some devices also have dual control with "hard trip output switchboards" and "soft trip output switchboards." Only when both types of switchboards are engaged can the trip command issued by the protection device after determining the fault be transmitted to the circuit breaker, achieving fault isolation.

[0003] Existing relay protection pressure plates have exposed metal plates outdoors, and the distance between the operator's hand and the metal plate is too small when they are put into operation. Furthermore, after the relay protection pressure plate is operated, it is easy to change its state due to accidental touch or bump. Based on this, we designed a relay protection pressure plate and a relay protection device. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the inconvenience of partially engaging or disengaging relay protection pressure plates in the above-mentioned or existing technologies, this utility model is proposed.

[0006] Therefore, one objective of this utility model is to provide a relay protection pressure plate to solve the problem of inconvenient operation of partially disengaging or engaging the relay protection pressure plate.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a relay protection pressure plate, including a sealing mechanism, a conductive mechanism installed inside the sealing mechanism, a handle fixedly connected to the movable end of the conductive mechanism, and the handle being rotatably connected to the sealing mechanism; the sealing mechanism separates the handle from the conductive mechanism, and a fixing mechanism is provided between the handle and the sealing mechanism; the fixing mechanism includes a snap-fit ​​component formed on the sealing mechanism, and the snap-fit ​​component is adapted to the end of the handle.

[0008] As a preferred embodiment of the relay protection pressure plate of this utility model, the snap-fit ​​component includes a blind hole opened on the sealing mechanism, and a snap cover is fixedly connected inside the blind hole by a first spring. The fixing mechanism also includes a snap groove located at the bottom of the handle.

[0009] As a preferred embodiment of the relay protection pressure plate of this utility model, the cross-sections of the slot and the cover are both circular, and the top edge of the cover and the bottom edge of the slot are both chamfered.

[0010] As a preferred embodiment of the relay protection pressure plate of this utility model, the sealing mechanism is box-shaped, and the sealing mechanism has an observation window corresponding to the conductive mechanism. The observation window is located at the top of the conductive mechanism, and a circular groove is provided at the top of the sealing mechanism corresponding to the handle. A limiting post is fixedly connected to the handle corresponding to the circular groove, and the outer wall of the limiting post is in contact with the inner wall of the circular groove.

[0011] As a preferred embodiment of the relay protection pressure plate of this utility model, the bottom of the handle is fixedly connected with a positioning pin, and the cross-section of the positioning pin is non-circular.

[0012] As a preferred embodiment of the relay protection pressure plate of this utility model, the conductive mechanism includes a fixed battery core and a rotating battery plate. The bottom edge of the rotating battery plate is electrically connected to an external power source through a wire, and the rotating battery plate and the fixed battery core are tightly fitted together.

[0013] As a preferred embodiment of the relay protection pressure plate of this utility model, the rotating electric plate is connected to the handle through a limiting mechanism. The limiting mechanism includes a limiting plate fixedly connected to the rotating electric plate. The inner wall of the sealing mechanism is provided with a positioning groove and a protrusion corresponding to the limiting plate. The bottom of the limiting plate is provided with an installation groove. A snap-fit ​​cover is slidably connected inside the installation groove. The bottom of the snap-fit ​​cover is adapted to the protrusion.

[0014] As a preferred embodiment of the relay protection pressure plate of this utility model, a second spring is installed between the top of the snap-fit ​​cover and the top of the mounting groove, one side of the top of the snap-fit ​​cover is connected to a positioning pin, and the positioning pin is slidably connected to the limiting plate.

[0015] Another objective of this invention is to provide a relay protection device to solve the problem of pressure plate limiting.

[0016] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a relay protection device, including a housing, a relay protection pressure plate fixedly connected to one side of the housing, and a heat dissipation window opened on the side wall of the housing.

[0017] As a preferred embodiment of the relay protection pressure plate of this utility model, the upper and lower sides of the housing are equipped with fixing frames, and bolts are installed on the fixing frames.

[0018] The beneficial effects of the relay protection pressure plate and relay protection device of this utility model are as follows: The sealing mechanism of this utility model can isolate dust, water vapor and impurities, avoid short circuit or poor contact of the conductive mechanism, and at the same time separate the handle from the conductive mechanism to prevent the operator from contacting the conductive parts, which greatly improves electrical safety. The limiting mechanism limits the opening and closing of the relay protection pressure plate by means of mechanical limiting and spring locking, which prevents the opening and closing state of the relay protection pressure plate from being changed due to accidental contact. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the relay protection pressure plate.

[0021] Figure 2 This is a partial structural diagram of the relay protection pressure plate.

[0022] Figure 3 This is a schematic diagram of the conductive mechanism of the relay protection pressure plate.

[0023] Figure 4 This is an exploded schematic diagram of the limit mechanism of the relay protection pressure plate.

[0024] Figure 5 This is a schematic diagram of the limiting mechanism of the relay protection pressure plate.

[0025] Figure 6 This is a schematic diagram of the conductive mechanism of the relay protection pressure plate.

[0026] Figure 7 This is a schematic diagram of the internal structure of the conductive mechanism of the relay protection pressure plate.

[0027] Figure 8 This is a schematic diagram of the overall structure of the relay protection device. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0031] Example 1, referring to Figures 1 to 3 This is the first embodiment of the present invention. This embodiment provides a relay protection pressure plate N, including a sealing mechanism 100. A conductive mechanism 200 is installed inside the sealing mechanism 100. A handle 300 is fixedly connected to the movable end of the conductive mechanism 200. The handle 300 is rotatably connected to the sealing mechanism 100. The sealing mechanism 100 separates the handle 300 from the conductive mechanism 200. A fixing mechanism 400 is provided between the handle 300 and the sealing mechanism 100. The fixing mechanism 400 includes a snap-fit ​​member 401 opened on the sealing mechanism 100. The snap-fit ​​member 401 is adapted to the end of the handle 300.

[0032] Furthermore, the sealing mechanism 100, which serves as the protection and installation base for the entire pressure plate, is made of high-strength insulating material. Its inner wall is treated with anti-corrosion to effectively isolate external dust, moisture and impurities, preventing the internal conductive mechanism 200 from short-circuiting or making poor contact due to environmental influences. The handle 300 is made of insulating and non-slip material with non-slip textures on the surface, making it convenient for operators to manually rotate it.

[0033] Reference Figures 1-7 The snap-fit ​​component 401 includes a blind hole 401a formed on the sealing mechanism 100. A snap cover 401c is fixedly connected inside the blind hole 401a by a first spring 401b. The fixing mechanism 400 also includes a snap groove 402 located at the bottom of the handle 300. Both the snap groove 402 and the snap cover 401c have circular cross-sections, and both the top edge of the snap cover 401c and the bottom edge of the snap groove 402 are chamfered.

[0034] Specifically, the first spring 401b has good elastic restoring performance. When the end of the handle 300 presses the cover 401c, the first spring 401b can be compressed and deformed to provide space for the slot 402 at the end of the handle 300 to be inserted. When the slot 402 at the end of the handle 300 reaches the designated position, the first spring 401b returns to its original position and pushes the cover 401c to fit tightly with the slot 402 at the end of the handle 300, achieving a stable engagement. When the handle 300 is limited, the connection state of the synchronous conductive mechanism 200 is also limited. This device can effectively control the closed state of the conductive mechanism 200 and avoid changes in the state of the conductive mechanism 200 due to accidental contact or collision.

[0035] The sealing mechanism 100 is box-shaped. An observation window 101 is provided on the sealing mechanism 100 corresponding to the conductive mechanism 200. The observation window 101 is located on the top of the conductive mechanism 200. A circular groove is provided on the top of the sealing mechanism 100 corresponding to the handle 300. A limiting post is fixedly connected to the handle 300 at the corresponding groove, and the outer wall of the limiting post fits against the inner wall of the circular groove. A positioning pin 301 is fixedly connected to the bottom of the handle 300. The cross-section of the positioning pin 301 is non-circular.

[0036] Preferably, in order to optimize the viewing angle and ensure the stability of the handle 300 rotation, the viewing window 101 is located at the top of the conductive mechanism 200. This position allows the operator to clearly observe the entire conductive mechanism 200 from above, and is especially convenient for checking the connection node status of the conductive mechanism 200.

[0037] In summary, the relay protection pressure plate N in Example 1 provides the conductive mechanism 200 with good protective performance, stable operation performance and convenient observation function. The separation design and insulation material of the sealing mechanism 100 ensure safe use. The spring snap-fit ​​structure of the fixing mechanism 400 ensures the reliability of the handle 300. The design of the observation window 101 and the limiting post improves the ease of operation.

[0038] Example 2, refer to Figures 1-7 This is the second embodiment of the present invention. The difference from the previous embodiment is the conductive mechanism 200 and the limiting mechanism 500. The conductive mechanism 200 includes a fixed battery core 201 and a rotating battery piece 202. The bottom edge of the rotating battery piece 202 is electrically connected to an external power source through a wire. The rotating battery piece 202 and the fixed battery core 201 are tightly fitted together.

[0039] The rotating electrode 202 is electrically connected to the fixed electrode 201, and the rotating electrode 202 is made of metal.

[0040] The rotating electric sheet 202 is connected to the handle 300 through a limiting mechanism 500. The limiting mechanism 500 includes a limiting plate 501 fixedly connected to the rotating electric sheet 202. The inner wall of the sealing mechanism 100 is provided with a positioning groove 502 and a protrusion 503 corresponding to the limiting plate 501. The bottom of the limiting plate 501 is provided with an installation groove 504. A snap-fit ​​cover 505 is slidably connected inside the installation groove 504. The bottom of the snap-fit ​​cover 505 is adapted to the protrusion 503.

[0041] Specifically, the limiting mechanism 500 is used to limit the limiting plate 501, which means limiting the rotating electric sheet 202.

[0042] A second spring 506 is installed between the top of the snap-fit ​​cover 505 and the top of the mounting groove 504. One side of the top of the snap-fit ​​cover 505 is connected to the positioning pin 301, and the positioning pin 301 is slidably connected to the limiting plate 501.

[0043] The rest of the structure is the same as in Example 1.

[0044] The device can achieve both the closed and open locking states of the conductive mechanism 200. When the device locks the conductive mechanism 200 in the open state, lifting the handle 300 causes the locking cover 505 to disengage from the protrusion 503. Rotating the handle 300 moves the slot 402 at the bottom of the handle 300 to the bottom of the locking cover 401c. When the device locks the conductive mechanism 200 in the closed state, lifting the handle 300 causes the locking cover 505 at the bottom of the handle 300 to rotate and cause the second spring 506 to contract and accumulate elastic potential energy. When the locking cover 505 is above the protrusion 503, releasing the handle 300 causes the second spring 506 to engage with the locking cover 505 and the protrusion 503, thus completing the closed locking state of the conductive mechanism 200.

[0045] In summary, based on Example 1, Example 2 optimizes the structure of the conductive mechanism 200 to make the circuit on / off control more precise. The added limiting mechanism 500 limits the rotation range of the rotating electrode 202 through mechanical limiting and spring engagement, ensuring its reliable operation. At the same time, it is linked with the positioning pin 301 of the handle 300 to achieve synchronization of operation and limiting, further improving the performance stability and operational safety of the relay protection pressure plate.

[0046] Example 3, referring to Figure 8 This is the third embodiment of the present invention. Unlike the previous embodiment, a relay protection device includes a housing 600. A relay protection pressure plate N is fixedly connected to one side of the housing 600, and a heat dissipation window 601 is provided on the side wall of the housing 600. Fixing brackets 602 are installed on both the upper and lower sides of the housing 600, and bolts 603 are installed on the fixing brackets 602. Operators can control the internal circuit of the relay protection device by operating the relay protection pressure plate N on one side of the control box 600, thereby enabling or disabling the relay protection function. During routine maintenance, dust accumulation can be observed through the dustproof screen at the heat dissipation window 601, and the dustproof screen can be disassembled and cleaned regularly to ensure heat dissipation. If it is necessary to inspect the relay protection pressure plate N, the status of the internal conductive mechanism 200 can be viewed through its own observation window 101 without disassembling the entire device, thus improving the convenience of maintenance.

[0047] In summary, the enclosure 600 not only provides a stable mounting base for the relay protection pressure plate N, but also protects all internal components from the influence of the external environment.

[0048] The rest of the structure is the same as in Example 2.

[0049] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0051] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A relay protection pressure plate (N), characterized in that: It includes a sealing mechanism (100), inside which a conductive mechanism (200) is installed, and a handle (300) is fixedly connected to the movable end of the conductive mechanism (200), and the handle (300) is rotatably connected to the sealing mechanism (100); The sealing mechanism (100) separates the handle (300) from the conductive mechanism (200), and a fixing mechanism (400) is provided between the handle (300) and the sealing mechanism (100). The fixing mechanism (400) includes a snap-fit ​​(401) provided on the sealing mechanism (100), the snap-fit ​​(401) being adapted to the end of the handle (300).

2. The relay protection pressure plate (N) as described in claim 1, characterized in that: The snap-fit ​​component (401) includes a blind hole (401a) opened on the sealing mechanism (100), and a snap cover (401c) is fixedly connected inside the blind hole (401a) by a first spring (401b). The fixing mechanism (400) also includes a snap groove (402) located at the bottom of the handle (300).

3. The relay protection pressure plate (N) as described in claim 2, characterized in that: The card slot (402) and the card cover (401c) are both circular in cross-section, and the top edge of the card cover (401c) and the bottom edge of the card slot (402) are both chamfered.

4. The relay protection pressure plate (N) as described in claim 3, characterized in that: The sealing mechanism (100) is box-shaped, and the sealing mechanism (100) has an observation window (101) corresponding to the conductive mechanism (200). The observation window (101) is located at the top of the conductive mechanism (200). A circular groove is provided at the top of the sealing mechanism (100) corresponding to the handle (300). A limiting post is fixedly connected to the handle (300) corresponding to the circular groove. The outer wall of the limiting post is in contact with the inner wall of the circular groove.

5. The relay protection pressure plate (N) as described in claim 2, 3 or 4, characterized in that: The bottom of the handle (300) is fixedly connected to a positioning pin (301), and the cross-section of the positioning pin (301) is non-circular.

6. The relay protection pressure plate (N) as described in claim 5, characterized in that: The conductive mechanism (200) includes a fixed battery cell (201) and a rotating battery plate (202). The bottom edge of the rotating battery plate (202) is electrically connected to an external power source through a wire. The rotating battery plate (202) and the fixed battery cell (201) are tightly fitted together.

7. The relay protection pressure plate (N) as described in claim 6, characterized in that: The rotating electric plate (202) is connected to the handle (300) through a limiting mechanism (500). The limiting mechanism (500) includes a limiting plate (501) fixedly connected to the rotating electric plate (202). The inner wall of the sealing mechanism (100) is provided with a positioning groove (502) and a protrusion (503) corresponding to the limiting plate (501). The bottom of the limiting plate (501) is provided with an installation groove (504). A snap-fit ​​cover (505) is slidably connected inside the installation groove (504). The bottom of the snap-fit ​​cover (505) is adapted to the protrusion (503).

8. The relay protection pressure plate (N) as described in claim 7, characterized in that: A second spring (506) is installed between the top of the snap-fit ​​cover (505) and the top of the mounting groove (504). The top side of the snap-fit ​​cover (505) is connected to the positioning pin (301), and the positioning pin (301) is slidably connected to the limiting plate (501).

9. A relay protection device, characterized in that: Includes a housing (600), on one side of which a relay protection pressure plate (N) is fixedly connected, and a heat dissipation window (601) is provided on the side wall of the housing (600).

10. The relay protection device as described in claim 9, characterized in that: The box (600) is equipped with a fixing frame (602) on both the upper and lower sides, and bolts (603) are installed on the fixing frame (602).

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