Wave recording device for recording faults of power system

Abstract

The utility model discloses a wave recording device for recording faults of an electric power system, which comprises a shielding case, an equipment shell is fixedly connected to the outer side of the shielding case, a linkage mechanism is rotatably connected to the equipment shell through a hinge, the linkage mechanism comprises a protection plate, T-shaped plates are fixedly connected to the two ends of the protection plate, and the T-shaped plates are fixedly connected to the two ends of the protection plate. A handle is fixedly connected to the T-shaped plate, a switch button is arranged on the handle, and a hydraulic rod is rotationally connected to the other side of the T-shaped plate. Through the equipment, interference signals generated by external electronic equipment, power lines and other electromagnetic sources can be reduced, the influence on the performance and data quality of the wave recording device is avoided, the accuracy and reliability of the wave recording device are ensured, and under the cooperation of the fixing mechanism and the linkage mechanism, the operation of replacing the internal wave recording instrument is simple, and the working efficiency is improved. And the wire harnesses can be quickly plugged and arranged, so that the wire harnesses are prevented from being wound and the workload is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fault recording and broadcasting, in particular to a wave recording device for recording power system faults. Background Art

[0002] Fault recording device is a device that can record the whole process change phenomenon of system current, voltage and its derived quantities, such as active power, reactive power and system frequency, caused by large disturbances such as short circuit fault, system oscillation, frequency collapse, voltage collapse, etc. It is mainly used to detect the action behavior of relay protection and safety automatic devices, understand the change law of various electrical quantities in the system during transient process, and verify the correctness of power system calculation procedures and model parameters. Fault recording devices with excellent performance play a very important role in ensuring the safe and reliable operation of power systems.

[0003] Patent application number "CN202320050767.X" describes "a new type of fault recording device, including a recording device body, a protective frame that provides basic protection for the terminal block body to prevent the recording device body from being contaminated by impurities and dust in the external environment during carrying, thereby affecting the normal use of the recording device body, and an anti-static fan performs anti-static blowing operation on the inner cavity of the protective frame to reduce the influence of static electricity on the terminal block body and the recording device body when used with external connection equipment, and at the same time increase the heat dissipation function of the inner cavity of the protective frame to solve the problem that when the portable device is connected to other electrical equipment, dust and static electricity easily interfere with the device due to the lack of good protection of the connection port."

[0004] However, due to the lack of a shield, the recording device is susceptible to external electromagnetic interference. Surrounding electronic equipment, power lines and other electromagnetic sources may generate interference signals, which will affect the performance and data quality of the recording device, thereby affecting the accuracy and reliability of the recording device. In addition, the replacement and maintenance of the recording and broadcasting equipment is cumbersome, resulting in an increased workload.

[0005] Therefore, the utility model provides a wave recording device for recording power system faults to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a recording device for recording power system faults, which solves the above-mentioned problem that the recording device is susceptible to external electromagnetic interference due to the lack of a shield, and that surrounding electronic equipment, power lines and other electromagnetic sources may generate interference signals, which will affect the performance and data quality of the recording device, thereby affecting the accuracy and reliability of the recording device, and that the replacement and maintenance of the recording and broadcasting equipment is cumbersome, resulting in an increased workload.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a recording device for recording power system faults, comprising a shielding cover, a device housing is fixedly connected to the outside of the shielding cover, a linkage mechanism is rotatably connected to the device housing through a hinge, the linkage mechanism comprises a protective plate, T-shaped plates are fixedly connected to both ends of the protective plate, a handle is fixedly connected to the T-shaped plate, and a switch button is provided on the handle, a hydraulic rod is rotatably connected to the other side of the T-shaped plate, the other end of the hydraulic rod is rotatably connected to the fixed rod on the outside of the device housing, a rotating rod is rotatably connected to the inside of the protective plate, the other end of the rotating rod is rotatably connected to the two ends of a base, a recorder is placed on the base, sliders are fixedly connected to both sides of the end of the base, and a slide groove matching the slider is provided inside the device housing.

[0008] Preferably, a wire harness plate is fixedly connected to the end of the base, and a plurality of symmetrically arranged clamping blocks are fixedly connected to the interior of the wire harness plate.

[0009] Preferably: a filter for filtering out a specific frequency point or frequencies other than the specific frequency point in the power line is fixedly connected inside the device housing, an external interface is provided on the outside of the device housing, and a non-slip foot support is fixedly connected to the bottom of the device housing.

[0010] Preferably: a pressing mechanism is provided inside the device shell, the pressing mechanism includes a bottom plate, both ends of the bottom plate are fixedly connected with movable tenons, and a straight groove matching the movable tenons is provided inside the device shell, the bottom plate is movably connected with a pressure plate through a support rod, the pressure plate is fixedly connected with a movable plate through a support rod, both ends of the movable plate are fixedly connected with cylindrical buckles, and a track matching the cylindrical buckle is provided inside the device shell.

[0011] Preferably, a servo motor is arranged inside the device housing, and an electric push rod is fixedly connected to the output shaft of the servo motor, and the electric push rod is fixedly connected to the end of the bottom plate.

[0012] Preferably, a rubber cushion is provided between the device housing and the protective plate to ensure a sealed state.

[0013] Beneficial Effects

[0014] The utility model provides a wave recording device for recording power system faults. Compared with the prior art, it has the following beneficial effects:

[0015] (1) The recording device for recording power system faults can move the internal recorder outward under the action of the sliders fixedly connected at both ends of the base and the slide grooves inside the device shell. Under the action of the cylindrical buckle and the track, the moving plate lifts the pressure plate upward to release the restraint of the pressure plate on the recorder, so that the base can be fully extended to facilitate the replacement and installation of the recorder. The wire harness plate set at the bottom of the base and the clamping block inside the wire harness plate can facilitate the direct clamping of the wires to be connected on the wire harness plate, so that the wires can be directly inserted into the inside of the device shell in a closed state.

[0016] (2) The recording device for recording power system faults, by pressing the switch on the handle, causes the hydraulic rod to retract and the base to be retracted into the interior of the device housing. The bottom plate is retracted inwardly by the action of the electric push rod and the protective plate is moved to be sealed with the device housing to ensure the shielding performance of the shielding cover. At the same time, the rubber gasket between the handle and the device housing can keep the shielding cover in a sealed state at all times, thereby reducing interference signals generated by external electronic equipment, power lines and other electromagnetic sources, avoiding affecting the performance and data quality of the recording device, thereby ensuring the accuracy and reliability of the recording device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the external structure of the shielding cover of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of the external structure of the shielding cover of the utility model in working state;

[0019] Figure 3 It is an exploded view of the internal structure of the shielding cover of the utility model;

[0020] Figure 4 It is a sectional stereoscopic diagram of the internal structure of the device shell of the utility model.

[0021] In the figure: 101, equipment housing; 102, fixing rod; 103, slide groove; 104, straight groove; 105, track; 106, filter; 107, external interface; 108, foot support; 2, linkage mechanism; 201, protective plate; 202, handle; 203, T-shaped plate; 204, hydraulic rod; 205, base; 206, wire harness plate; 207, block; 208, rotating rod; 209, slider; 3, recorder; 4, pressing mechanism; 401, bottom plate; 402, pressure plate; 403, moving plate; 404, electric push rod; 405, moving tenon; 5, servo motor; 6, shielding cover. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] See also Figure 1-4A recording device for recording power system faults, comprising a shielding cover 6, a device housing 101 is fixedly connected to the outside of the shielding cover 6, a linkage mechanism 2 is rotatably connected to the device housing 101 through a hinge, the linkage mechanism 2 comprises a protective plate 201, T-shaped plates 203 are fixedly connected to both ends of the protective plate 201, a handle 202 is fixedly connected to the T-shaped plate 203, and a switch button is arranged on the handle 202, a hydraulic rod 204 is rotatably connected to the other side of the T-shaped plate 203, the other end of the hydraulic rod 204 is rotatably connected to the fixed rod 102 outside the device housing 101, a rotating rod 208 is rotatably connected to the inner side of the protective plate 201, and the rotating rod 208 is rotatably connected to the inner side of the protective plate 201. The other end of 08 is rotatably connected to the two ends of the base 205, and a recorder 3 is placed on the base 205. Sliders 209 are fixedly connected to both sides of the end of the base 205. A slide groove 103 matching the slide 209 is provided inside the device housing 101. A wire harness plate 206 is fixedly connected to the end of the base 205. A plurality of symmetrically arranged blocks 207 are fixedly connected inside the wire harness plate 206. A rubber cushion is provided between the device housing 101 and the protective plate 201 to ensure a sealed state. First, the switch on the handle 202 is pressed, so that the servo motor 5 receives an electrical signal and drives the hydraulic rods 204 on both sides of the device housing 101 to extend. Due to the fixed rod The handle 202 and the T-shaped plate 203 are movably connected by a hydraulic rod 204, so that the handle 202 can be folded outwards under the action of the hinge between the protective plate 201 and the device housing 101. When the protective plate 201 is folded outwards, the protective plate 201 drives the base 205 to be pulled outwards through the rotating rod 208. Under the action of the sliders 209 fixedly connected at both ends of the base 205 and the slide groove 103 inside the device housing 101, the base 205 can send the internal recorder 3 outwards. In the process of pushing out the base 205, under the action of the cylindrical buckles on both sides of the movable plate 403 and the track 105 inside the device housing 101, the movable plate 201 is moved outwards. The plate 403 lifts the pressure plate 402 upwards, releasing the restraint of the pressure plate 402 on the recorder 3. At the same time, the electric push rod 404 at the bottom of the bottom plate 401, through the cooperation of the movable latches 405 on both sides of the bottom plate 401 and the straight grooves 104 inside the device housing 101, can push the bottom plate 401 to move outward, and can fully extend the base 205, which is convenient for replacing and installing the recorder 3. Through the wire harness plate 206 set at the bottom of the base 205 and the block 207 inside the wire harness plate 206, it is convenient to directly clamp the wires to be connected on the wire harness plate 206, so that the wires can be directly inserted into the inside of the device housing 101 in a closed state.

[0025] Embodiment 2:

[0026] See also Figure 1-4This embodiment provides a technical solution based on the first embodiment: a filter 106 for filtering a frequency point of a specific frequency or frequencies other than the frequency point in the power line is fixedly connected inside the device housing 101, an external interface 107 is arranged on the outside of the device housing 101, a non-slip foot support 108 is fixedly connected to the bottom of the device housing 101, a pressing mechanism 4 is arranged inside the device housing 101, and the pressing mechanism 4 includes a bottom plate 401, and movable tenons 405 are fixedly connected at both ends of the bottom plate 401, and the device housing 101 is provided with a plurality of movable tenons 405. A straight groove 104 matching the movable latch 405 is provided inside, the bottom plate 401 is movably connected to the pressure plate 402 through the support rod, the pressure plate 402 is fixedly connected to the movable plate 403 through the support rod, the two ends of the movable plate 403 are fixedly connected to cylindrical buckles, and a track 105 matching the cylindrical buckle is provided inside the device housing 101, a servo motor 5 is arranged inside the device housing 101, and an electric push rod 404 is fixedly connected to the output shaft of the servo motor 5, and the electric push rod 404 is fixedly connected to the end of the bottom plate 401, and the device housing 1 01 is fixedly installed with a filter 106 for filtering a specific frequency point in the power line or frequencies other than the specific frequency point. After the wires to be connected are installed inside the device housing 101, the external wires are connected through the external interface 107. The switch on the handle 202 is pressed to shrink the hydraulic rod 204, and the base 205 is retracted into the device housing 101. Under the action of the electric push rod 404, the bottom plate 401 shrinks inward, and the moving plate 403 drives the pressing plate 402 to move downward until the pressing plate 4 02 is pressed on the top of the recorder 3, so as to keep the recorder 3 inside the shielding cover 6 without shaking with the outside and moving, which would cause damage to the equipment. The foot support 108 at the bottom can increase the friction between the shielding cover 6 and the ground, which is convenient for installation and placement. At the same time, the rubber gasket between the handle 202 and the device housing 101 can also make the shielding cover 6 always in a sealed state, thereby reducing interference signals generated by external electronic equipment, power lines and other electromagnetic sources, avoiding affecting the performance and data quality of the recording device, thereby ensuring the accuracy and reliability of the recording device.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] Working principle: When working, first press the switch on the handle 202, so that the servo motor 5 receives an electrical signal and drives the hydraulic rods 204 on both sides of the device housing 101 to extend. Since the fixed rod 102 and the T-shaped plate 203 are movably connected through the hydraulic rods 204, the handle 202 can be folded outwards under the action of the hinge between the protective plate 201 and the device housing 101. When the protective plate 201 is folded outwards, the protective plate 201 drives the base 205 to be pulled outwards through the rotating rod 208. Under the action of the sliders 209 fixedly connected at both ends of the base 205 and the slide grooves 103 inside the device housing 101, the base 205 can move the internal recording The wave recorder 3 is sent outward. In the process of pushing out the base 205, the cylindrical buckles on both sides of the movable plate 403 and the track 105 inside the device housing 101 enable the movable plate 403 to lift the pressure plate 402 upward, thereby releasing the restraint of the pressure plate 402 on the wave recorder 3. At the same time, the electric push rod 404 at the bottom of the bottom plate 401 can push the bottom plate 401 to move outward through the cooperation of the movable latches 405 on both sides of the bottom plate 401 and the straight grooves 104 inside the device housing 101, so that the base 205 can be fully extended, which is convenient for replacing and installing the wave recorder 3. 06, it is convenient to directly clip the wires to be connected on the wire harness plate 206, so that the wires can be directly inserted into the device housing 101 in a closed state. At the same time, a filter 106 for filtering a specific frequency point in the power line or a frequency other than the frequency point is fixedly installed inside the device housing 101. After the wires to be connected are installed inside the device housing 101, the external wires are connected through the external interface 107, and the switch on the handle 202 is pressed to shrink the hydraulic rod 204, and the base 205 is retracted into the device housing 101. Under the action of the electric push rod 404, the bottom plate 401 is It contracts inward, and at the same time, the moving plate 403 will drive the pressure plate 402 to move downward until the pressure plate 402 is pressed on the top of the recorder 3, thereby keeping the recorder 3 inside the shielding cover 6 and not moving due to external shaking, causing damage to the equipment. The foot support 108 at the bottom can increase the friction between the shielding cover 6 and the ground, which is convenient for installation and placement. At the same time, the rubber gasket between the handle 202 and the device housing 101 can also keep the shielding cover 6 in a sealed state at all times. Through the above-mentioned equipment, interference signals generated by external electronic equipment, power lines and other electromagnetic sources can be reduced, avoiding affecting the performance and data quality of the recording device, thereby ensuring the accuracy and reliability of the recording device.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A recording device for recording power system faults, comprising a shielding cover (6), characterized in that: The outer side of the shielding cover (6) is fixedly connected to a device housing (101), and the device housing (101) is rotatably connected to a linkage mechanism (2) via a hinge. The linkage mechanism (2) comprises a protective plate (201), and both ends of the protective plate (201) are fixedly connected to a T-shaped plate (203), and the T-shaped plate (203) is fixedly connected to a handle (202), and the handle (202) is provided with a switch button. The other side of the T-shaped plate (203) is rotatably connected to a hydraulic rod (204), and the hydraulic rod (204) is connected to the hydraulic rod (204). The other end of the pressure rod (204) is rotatably connected to the fixed rod (102) outside the device housing (101), the inner side of the protective plate (201) is rotatably connected to a rotating rod (208), the other end of the rotating rod (208) is rotatably connected to the two ends of the base (205), a recorder (3) is placed on the base (205), sliders (209) are fixedly connected to both sides of the end of the base (205), and a slide groove (103) matching the slider (209) is opened inside the device housing (101).

2. A recording device for recording power system faults according to claim 1, characterized in that: A wire harness plate (206) is fixedly connected to the end of the base (205), and a plurality of symmetrically arranged clamping blocks (207) are fixedly connected inside the wire harness plate (206).

3. A recording device for recording power system faults according to claim 1, characterized in that: A filter (106) for filtering out a frequency point of a specific frequency or frequencies other than the frequency point in a power line is fixedly connected to the inside of the device housing (101), an external interface (107) is arranged on the outside of the device housing (101), and an anti-slip foot support (108) is fixedly connected to the bottom of the device housing (101).

4. A recording device for recording power system faults according to claim 1, characterized in that: A pressing mechanism (4) is arranged inside the device housing (101), and the pressing mechanism (4) comprises a bottom plate (401), two ends of the bottom plate (401) are fixedly connected with movable tenons (405), and a straight groove (104) matching the movable tenons (405) is provided inside the device housing (101), the bottom plate (401) is movably connected with a pressing plate (402) via a support rod, the pressing plate (402) is fixedly connected with a movable plate (403) via a support rod, two ends of the movable plate (403) are fixedly connected with cylindrical buckles, and a track (105) matching the cylindrical buckle is provided inside the device housing (101).

5. A recording device for recording power system faults according to claim 1, characterized in that: A servo motor (5) is arranged inside the device housing (101), and an electric push rod (404) is fixedly connected to the output shaft of the servo motor (5), and the electric push rod (404) is fixedly connected to the end of the bottom plate (401).

6. A recording device for recording power system faults according to claim 1, characterized in that: A rubber cushion is provided between the device housing (101) and the protective plate (201) to ensure a sealed state.

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