A power system fault recording device

Abstract

The present invention discloses a power system fault recording device, which relates to the technical field of power facilities and includes a recorder body for automatically and accurately recording changes in various electrical quantities before and after a power system fault occurs. The recorder body is provided with a control area on the right side of the front surface; a cover body with a hidden frame, a hidden cover plate, a movable lock, an auxiliary lock body, and an elastic component. The present invention solves the problem that, with conventional fault recorders, the control area of ​​the fault recorder needs to be covered with a cover plate to prevent excessive dust from falling into the control area of ​​the fault recorder during use. Conventional cover plates are fixed to the fault recorder with screws, making disassembly cumbersome and affecting the efficiency of circuit maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power facilities, and in particular relates to a fault recording device for an electric power system. Background Art

[0002] Fault recorders are used in power systems. When a fault occurs in the system, they can automatically and accurately record the changes in various electrical quantities before and after the fault. By analyzing and comparing these electrical quantities, they play an important role in analyzing and handling accidents, judging whether the protection is operating correctly, and improving the safe operation level of the power system. When a fault or oscillation occurs in the power system, it can automatically record the changes in various electrical quantities during the entire fault process. The fault recorder has a relay protection function. It can analyze the operation of relay protection and high-voltage circuit breakers, discover equipment defects in a timely manner, and reveal problems in the power system.

[0003] However, as far as the current traditional fault recorder is concerned, when the fault recorder is in use, in order to prevent excessive dust from falling into the control area of ​​the fault recorder, the control area of ​​the fault recorder needs to be covered with a cover. The traditional cover is fixed to the fault recorder with screws, which is troublesome to disassemble and affects the efficiency of circuit maintenance.

[0004] The disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the Invention

[0005] The purpose of the present invention is to provide an electric power system protection device to solve the problem proposed in the above background technology that the auxiliary blocking components and the plug-in positioning components on the cover of the electrical box cannot be integrated and shared, and the blocking components and the plug-in positioning components need to be separately provided, which is not conducive to reducing the weight of the equipment and reducing the cost. In addition, the structure of the plug-in positioning component is simple, and most of them can only implement a single plug-in positioning on a single part of the box cover, resulting in poor stability of the box cover when plugged in and closed, and it is easy to be knocked open by impact.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A power system fault recording device comprises: a recorder main body, which is used to automatically and accurately record the changes in various electrical quantities before and after the fault when a fault occurs in the power system, and a control area is provided on the right side of the front surface of the recorder main body; a hidden frame on the cover side, which is fixedly connected to the right side of the recorder main body; a hidden cover, which is movably connected to the left side of the hidden frame on the cover side, and is used to cover the control area; a movable lock, which is movably connected above the front surface of the recorder main body, and is used to automatically lock the hidden cover; an auxiliary lock body, which is fixedly connected above the front surface of the recorder main body and is located on one side of the movable lock, and is used to cooperate with the movable lock to close the hidden cover; an elastic component, one end of the elastic component is fixed to the recorder main body, and the other end acts on the movable lock.

[0008] Preferably, the elastic component includes a positioning guide block and two return springs fixed to the lower surface of the positioning guide block; the other ends of the return springs are fixed to the movable lock;

[0009] Preferably, a locking auxiliary wedge surface with a wedge-shaped surface structure is processed on the front upper edge of the positioning guide block.

[0010] Preferably, a side panel is provided on both sides of the lower surface of the movable lock buckle, and a guide lock column is fixedly connected to the rear of the movable lock buckle. An auxiliary positioning lock hole with a rectangular structure is opened in the middle of the left side panel of the movable lock buckle, and the positioning guide block is slidably connected to the guide column.

[0011] Preferably, a wedge-shaped locking block is provided in front of the lower end of the guide locking column, and a locking block wedge surface is provided in front of the wedge-shaped locking block, and the locking block wedge surface faces forward and downward.

[0012] Preferably, the upper edge and the lower edge of the hidden frame on the cover body side are bent to the left to form an inner folded edge, the inner folded edge is perpendicular to the left surface of the hidden frame on the cover body side, and the outer end of the inner folded edge is fixedly connected to the left surface of the recorder body by welding, and the hidden frame on the cover body side and the recorder body form a rectangular groove.

[0013] Preferably, the inner surface of the inner fold edge is provided with a fold edge sliding groove of a rectangular groove structure, and the front end and the rear end of the fold edge sliding groove are both configured as semicircular grooves.

[0014] Preferably, the hidden cover is a rectangular plate, and a cylindrical hinged end shaft is provided above and below the right end of the hidden cover, and the hinged end shaft is slidably connected to the folded edge slide; the left end of the hidden cover is bent backward to form a limiting pull plate, and a pull plate protrusion is fixedly connected to the rear end of the upper surface of the limiting pull plate.

[0015] Preferably, the width of the hidden cover is equal to the distance from the right surface of the recorder body to the right edge of the recorder display screen.

[0016] Preferably, the pull plate protrusion is a wedge-shaped protrusion structure, and the inclined surface of the pull plate protrusion faces rearward.

[0017] Compared with the existing technology, the present invention has the following beneficial effects:

[0018] 1. Compared with the existing fault recorder, the advantages of the present invention are mainly reflected in: it has a protective cover that is easy to open and store, and is also provided with an auxiliary lock body to protect the cover to prevent non-professionals from opening it. The cover can also be fixed without using the auxiliary lock body. By rotating the hidden cover, the control area on the right side of the front surface of the recorder body is covered with the hidden cover, which can reduce the chance of dust entering the control area and reduce the chance of accidentally touching the control area button during operation.

[0019] 2. In the present invention, by cooperating with the locking auxiliary wedge surface and the locking block wedge surface, during the process of the hidden cover being flipped over and covered, the wedge-shaped locking block is pushed upward by the contact of the two wedge surfaces, and then the wedge-shaped locking block is inserted behind the pull plate protrusion under the action of two return springs, thereby locking the hidden cover and realizing the function of automatic locking after closing.

[0020] 3. In the present invention, an auxiliary positioning lock hole is cooperated with the auxiliary lock body, and a rectangular auxiliary positioning lock hole is opened on the left side of the movable lock buckle. The lock tongue of the auxiliary lock body extends out and is inserted into the auxiliary positioning lock hole to fix and lock the height of the movable lock buckle, so that the pull plate protrusion cannot be separated from the positioning of the movable lock buckle. The hidden cover can be closed to prevent non-professionals from opening it, thereby ensuring the safety of the equipment.

[0021] 4. In the present invention, through the cooperation of the hidden cover and the hidden frame on the side of the cover body, when the hidden cover is opened, the hidden cover is rotated ninety degrees so that the hidden cover is perpendicular to the front surface of the fault recorder, and then the hidden cover is pushed toward the inside of the hidden frame on the side of the cover body. The hidden cover can be hidden and set, which reduces the utilization of space and is more convenient for maintenance personnel to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the hidden cover plate of the present invention in the stored state.

[0024] Figure 3 It is a structural schematic diagram of the hidden cover of the present invention in a closed state.

[0025] Figure 4 It is a structural schematic diagram of the cover body side hidden frame of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the movable lock of the present invention.

[0027] Figure 6 It is a structural schematic diagram of the guide lock column of the present invention.

[0028] Figure 7 This invention Figure 3 Schematic diagram of the local enlarged structure at point A.

[0029] Figure 8 This invention Figure 4 Schematic diagram of the local enlarged structure at point B.

[0030] Reference numerals:

[0031] 1- recorder body, 101- positioning guide block, 1011- reset top spring, 1012- locking auxiliary wedge surface, 2- cover side hidden frame, 201- inner folding edge, 2011- folding edge slide, 3- hidden cover, 301- hinged end shaft, 302- limit pull plate, 3021- pull plate protrusion, 4- auxiliary lock body, 5- movable lock buckle, 501- guide lock column, 5011- wedge-shaped lock block, 5012- lock block wedge surface, 502- auxiliary positioning lock hole, 6- control area. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first," "second," and "third" are used solely for descriptive purposes and to distinguish technical features. They are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. 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, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0036] See also Figure 1 -, a power system fault recording device, characterized by comprising:

[0037] The recorder body 1 is used to automatically and accurately record the changes in various electrical quantities before and after a power system fault occurs. The recorder body 1 is provided with a control area 6 on the right side of the front surface; a cover side hidden frame 2 is fixedly connected to the right side of the recorder body 1; a hidden cover 3 is movably connected to the left side of the cover side hidden frame 2 to cover the control area 6; a movable lock 5 is movably connected to the upper front surface of the recorder body 1 to automatically lock the hidden cover 3; an auxiliary lock body 4 is fixedly connected to the upper front surface of the recorder body 1 and located on one side of the movable lock 5 to engage with the movable lock 5 to close the hidden cover 3; and an elastic component, one end of which is fixed to the recorder body 1 and the other end acts on the movable lock 5. The elastic component includes a positioning guide block 101 and two return springs 1011 fixed to the lower surface of the positioning guide block 101.

[0038] The following is a further explanation of the above scheme:

[0039] In this embodiment, a positioning guide block 101 is fixedly connected to the upper front surface of the recorder body 1. The positioning guide block 101 is an arched frame, and the positioning guide block 101 is located on the right side of the auxiliary lock body 4. Two reset springs 1011 are fixedly connected to the front of the lower surface of the positioning guide block 101. The lower ends of the two reset springs 1011 are fixedly connected to the movable lock buckle 5. A locking auxiliary wedge surface 1012 with a wedge-shaped surface structure is processed on the upper front edge of the positioning guide block 101. The internal sliding connection of the positioning guide block 101 guides the lock column 501, which guides and limits the movable lock buckle 5. Under normal circumstances, The action of the reset top spring 1011 presses the movable lock buckle 5 downward, and the pull plate protrusion 3021 is positioned by the hook-shaped structure of the wedge-shaped locking block 5011, and the hidden cover 3 is locked from the left end, thereby realizing the positioning of the hidden cover 3; through the cooperation of the locking auxiliary wedge surface 1012 and the locking block wedge surface 5012, in the process of the hidden cover 3 being flipped and covered, the wedge-shaped locking block 5011 is pushed upward by the contact of the two wedge surfaces, and then under the action of the two reset top springs 1011, the wedge-shaped locking block 5011 is inserted into the rear of the pull plate protrusion 3021, locking the hidden cover 3, realizing the function of automatic locking after closing.

[0040] Among them, the upper edge and the lower edge of the cover body side hidden frame 2 are bent to the left to form an inner folded edge 201, the inner folded edge 201 is perpendicular to the left surface of the cover body side hidden frame 2, and the outer end of the inner folded edge 201 is fixedly connected to the left surface of the recorder body 1 by welding, and the cover body side hidden frame 2 and the recorder body 1 form a rectangular groove; the inner surface of the inner folded edge 201 is provided with a folded edge slide 2011 of a rectangular groove structure, and the front and rear ends of the folded edge slide 2011 are both set as semi- The circular groove, through the setting of the inner folding edge 201, creates a certain gap between the main body of the hidden frame 2 on the cover side and the recorder main body 1, which is used to hide the hidden cover 3. Through the action of the folding edge slide 2011, the folding edge slide 2011 is slidably connected to the hinged end shaft 301, which plays a guiding role. The hinged end shaft 301 is slidably connected in the folding edge slide 2011, and the hidden cover 3 can be moved by the guidance of the folding edge slide 2011, thereby achieving the effect of smooth advancement of the hidden cover 3.

[0041] Among them, the hidden cover 3 is a rectangular plate, and a cylindrical hinged end shaft 301 is provided above and below the right end of the hidden cover 3 respectively. The left end of the hidden cover 3 is bent backward to form a limiting pull plate 302. The limiting pull plate 302 is perpendicular to the front surface of the hidden cover 3. The width of the hidden cover 3 is equal to the distance from the right surface of the recorder body 1 to the right edge of the recorder display screen. The hinged end shaft 301 is movably connected in the folded edge slide groove 2011, and the hidden cover 3 can be rotated to cover the control area 6 on the right side of the front surface of the recorder body 1. By rotating the hidden cover 3, the control area on the right side of the front surface of the recorder body 1 is covered by the hidden cover 3, which can reduce the chance of dust entering the control area and reduce the chance of accidentally touching the button in the control area 6 during operation.

[0042] Among them, the rear end of the upper surface of the limiting pull plate 302 is fixedly connected with a pull plate protrusion 3021, which is a wedge-shaped protrusion structure, and the inclined surface of the pull plate protrusion 3021 faces backward. A side plate is provided on both sides of the lower surface of the movable lock buckle 5, and a guide lock column 501 is fixedly connected to the rear of the movable lock buckle 5. A wedge-shaped locking block 5011 is provided in front of the lower end of the guide lock column 501, and a locking block wedge surface 5012 is provided in front of the wedge locking block 5011. The locking block wedge surface 5012 faces the front and bottom. An auxiliary positioning lock hole 502 with a rectangular structure is provided in the middle of the left side panel of the movable lock buckle 5. The cooperation between the pull plate protrusion 3021 and the wedge locking block 5011 is realized to achieve the locking effect of the hidden cover 3. The auxiliary positioning lock hole 502 cooperates with the auxiliary lock body 4 to close the hidden cover 3 to prevent non-professionals from opening it.

[0043] The specific usage and effects of this embodiment are as follows:

[0044] When the cam 3 is in the locked state, the movable lock buckle 5 is manually pushed upward to move the wedge-shaped lock block 5011 upward and disengage the lock of the pull plate protrusion 3021, so that the hidden cover 3 can be rotated. The control area 6 is opened to control the device and the hidden cover 3 is continued to rotate. When the hidden cover 3 is rotated to be perpendicular to the front surface of the recorder body 1, the hidden cover 3 is pushed backward and the hinged end shaft 301 is slidably connected in the folded edge slot 2011. The hidden cover 3 can be moved by the guidance of the folded edge slot 2011 to achieve a smooth pushing of the hidden cover 3. The hidden cover 3 can be inserted into the hidden frame 2 on the side of the cover body to hide the hidden cover 3, which can reduce the utilization of space and is more convenient for maintenance personnel to operate. When the auxiliary positioning lock hole 502 is locked by the auxiliary lock body 4, the height of the movable lock buckle 5 is fixed and locked, so that the pull plate protrusion 3021 cannot be separated from the positioning of the movable lock buckle 5, and the hidden cover 3 can be closed, which can prevent non-professionals from opening it, ensure the safety of the equipment, and reduce the probability of equipment or circuit failure caused by misoperation. At the same time, by rotating the hidden cover 3, the control area on the right side of the front surface of the recorder body 1 is covered with the hidden cover 3, which can reduce the probability of dust entering the control area and reduce the probability of accidentally touching the button in the control area 6 during operation.

[0045] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various different selections and changes to the embodiments as needed without departing from the principles and purpose of the present invention after reading this specification, but they are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A power system fault recording device, characterized in that: include: The recorder body (1) is used to automatically and accurately record changes in various electrical quantities before and after a fault occurs in the power system. A control area (6) is provided on the right side of the front surface of the recorder body (1); A cover side hidden frame (2), the cover side hidden frame (2) being fixedly connected to the right side of the recorder main body (1); A hidden cover plate (3), the hidden cover plate (3) being movably connected to the left side of the cover body side hidden frame (2) and used for covering the control area (6); A movable lock (5), the movable lock (5) being movably connected above the front surface of the recorder body (1) and being used for automatically locking the hidden cover (3); An auxiliary lock body (4), the auxiliary lock body (4) being fixedly connected above the front surface of the recorder body (1) and located on one side of the movable lock buckle (5), and being used to cooperate with the movable lock buckle (5) to close the hidden cover (3); An elastic component, one end of which is fixed to the wave recorder body (1) and the other end of which acts on the movable lock (5); The elastic component comprises a positioning guide block (101) and two return springs (1011) fixed to the lower surface of the positioning guide block (101); the other ends of the return springs (1011) are both fixed to the movable lock buckle (5); A locking auxiliary wedge surface (1012) with a wedge-shaped structure is machined on the front upper edge of the positioning guide block (101); A side plate is provided on both sides of the lower surface of the movable lock buckle (5), and a guide lock column (501) is fixedly connected to the rear of the movable lock buckle (5). A rectangular auxiliary positioning lock hole (502) is provided in the middle of the left side plate of the movable lock buckle (5), and the positioning guide block (101) is slidably connected to the guide lock column (501) inside.

2. The power system fault recording device according to claim 1, characterized in that: A wedge-shaped locking block (5011) is provided in front of the lower end of the guide locking column (501), and a locking block wedge surface (5012) is provided in front of the wedge-shaped locking block (5011), and the locking block wedge surface (5012) faces forward and downward.

3. The power system fault recording device according to claim 1, characterized in that: The upper and lower edges of the cover body side hidden frame (2) are both bent to the left to form an inner folded edge (201), the inner folded edge (201) is perpendicular to the left surface of the cover body side hidden frame (2), and the outer end of the inner folded edge (201) is fixedly connected to the left surface of the recorder body (1) by welding, so that the cover body side hidden frame (2) and the recorder body (1) form a rectangular groove.

4. The power system fault recording device according to claim 3, characterized in that: The inner surface of the inner folded edge (201) is provided with a folded edge sliding groove (2011) having a rectangular groove structure, and the front end and the rear end of the folded edge sliding groove (2011) are both configured as semicircular grooves.

5. The power system fault recording device according to claim 4, characterized in that: The hidden cover plate (3) is a rectangular plate body, and a cylindrical hinge end shaft (301) is provided above and below the right end of the hidden cover plate (3), respectively. The hinge end shaft (301) is slidably connected to the folding edge slide groove (2011); The left end of the hidden cover plate (3) is bent backward to form a limit pull plate (302), and a pull plate protrusion (3021) is fixedly connected to the rear end of the upper surface of the limit pull plate (302).

6. The power system fault recording device according to claim 5, characterized in that: The width of the hidden cover plate (3) is equal to the distance from the right surface of the recorder body (1) to the right edge of the recorder display screen.

7. The power system fault recording device according to claim 5, characterized in that: The pull plate protrusion (3021) is a wedge-shaped protrusion structure, and the inclined surface of the pull plate protrusion (3021) faces rearward.

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