A device for detecting and checking the state of a hard pressure plate of a hydropower station
By designing a hard-plate condition detection device that includes a take-up box and a torsion spring take-up mechanism, the problems of cable tangling and space occupation are solved, achieving efficient detection and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN DATANGGUOJI LIXIANJIANG RIVER BASIN HYDROELECTRIC POWER
- Filing Date
- 2025-07-10
- Publication Date
- 2026-06-19
AI Technical Summary
The cables of existing hard plate condition detection devices are prone to tangling and mess, and the devices are inconvenient to operate in narrow spaces, which affects detection efficiency.
A detection device comprising a cable retractor and a torsion spring cable retractor mechanism was designed. The automatic retraction of the connecting cable is achieved through the elastic restoring force of the torsion spring. Combined with a foldable positioning plate and a protective shell, the cable tangling and space occupation are reduced.
It improves testing efficiency, reduces cable wear, and facilitates operation and transportation in confined spaces.
Smart Images
Figure CN224382456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hard pressure plate technology for hydropower stations, specifically a hard pressure plate status detection and verification device for hydropower stations. Background Technology
[0002] In hydropower station operation, the hard switch is a core component in the secondary circuit for enabling and disabling protection devices. In the protection circuits of main equipment such as generator sets and transformers, the hard switch physically connects or disconnects the control circuit to enable or disable protection functions (such as differential protection and overcurrent protection) on-site. When equipment is under maintenance or protection strategies are adjusted, operators must manually operate the hard switch to change its on / off state.
[0003] Existing devices for detecting the condition of hard pressure plates typically employ a fixed structure. Their exposed cables are prone to tangling, wear, and other problems during frequent use, requiring manual storage and affecting the efficiency of detecting the condition of hard pressure plates. In particular, when inspectors need to move around in the narrow space of a power station, the rigid frame structure of traditional devices occupies a large amount of space, making them inconvenient to carry and transport.
[0004] To address this issue, we designed a device for detecting and verifying the condition of the hard plate in a hydropower station. Utility Model Content
[0005] The purpose of this invention is to provide a device for detecting and verifying the condition of hard pressure plates in hydropower stations, so as to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, this utility model provides a hydropower station hard plate condition detection and verification device, including a take-up box, a positioning plate fixedly connected to the top of the take-up box, an opening on one side of the positioning plate, a crossbar hinged to the inner wall of the positioning plate, a distance measuring module installed at intervals on the top of the crossbar, a slot for cooperating with the distance measuring module on the top of the positioning plate, the distance measuring module engaging with the slot, and a take-up mechanism inside the take-up box.
[0007] Furthermore, the take-up mechanism includes a torsion spring fixedly connected to the inside of the take-up box. One end of the torsion spring is fixedly connected to a mounting base, and a connecting wire is fixedly connected to the side of the mounting base away from the torsion spring. One end of the connecting wire passes through the side wall of the take-up box and is electrically connected to the ranging module.
[0008] Furthermore, a protective shell is hinged to the end of the positioning plate away from the crossbar, and the protective shell is fitted over the outside of the positioning plate.
[0009] Furthermore, rounded corners are provided at the corners of the card slots.
[0010] Furthermore, multiple indicator lights are installed on the top of the crossbar, and the indicator lights are located on one side of the ranging module. The number of indicator lights is the same as the number of ranging modules.
[0011] Furthermore, a groove is provided at the center of the bottom of the protective shell, and the groove is engaged with the cable take-up box.
[0012] Furthermore, the protective shell is threaded with a bolt, the threaded portion of which penetrates the protective shell and is threadedly connected to the positioning plate.
[0013] Furthermore, the housing of the indicator light is made of transparent polycarbonate.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. By incorporating a torsion spring-loaded cable retraction mechanism inside the cable retraction box, the connecting cable is automatically released when the ranging module is displaced. After the detection is completed, the cable can be automatically retracted and stored through the elastic restoring force of the torsion spring, reducing cable tangling and wear problems and improving detection efficiency.
[0016] 2. By setting the positioning plate and the crossbar to be hinged, the ranging module can be unfolded when in use and folded into the positioning plate when not in use. With the protection of the protective shell, the overall size of the device is reduced, making it easier to operate and transport in narrow spaces. Attached Figure Description
[0017] Figure 1 This is a diagram showing the state of the present invention after it has been opened;
[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the cable take-up box of this utility model;
[0020] Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.
[0021] In the diagram: 1. Crossbar; 2. Positioning plate; 3. Protective shell; 4. Cable retractor; 5. Torsion spring; 6. Connecting wire; 7. Mounting base; 8. Bolt; 9. Distance measuring module; 10. Indicator light; 11. Slot; 12. Rounded corner transition; 13. Groove. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-4 This utility model provides a technical solution: a device for detecting and verifying the condition of a hard plate in a hydropower station, including a take-up box 4, a positioning plate 2 fixedly connected to the top of the take-up box 4, an opening on one side of the positioning plate 2, a crossbar 1 hinged to the inner wall of the positioning plate 2, a distance measuring module 9 installed at intervals on the top of the crossbar 1, a slot 11 for cooperating with the distance measuring module 9 on the top of the positioning plate 2, the distance measuring module 9 engaging with the slot 11, a take-up mechanism inside the take-up box 4 including a torsion spring 5 fixedly connected to the inner side of the take-up box 4, a mounting base 7 fixedly connected to one end of the torsion spring 5, the other end of the torsion spring 5 fixedly connected to the inner side of the take-up box 4, a connecting wire 6 fixedly connected to the side of the mounting base 7 away from the torsion spring 5, one end of the connecting wire 6 penetrating through the side wall of the take-up box 4 and connected to a power source, and finally electrically connected to the distance measuring module 9 through a wire.
[0024] In practice, the crossbar 1 is first rotated outward from the opening side of the positioning plate 2 to adjust and use the ranging module 9. Due to the displacement of the ranging module 9, the connecting line 6 is pulled to extend from the inside of the take-up box 4 to the required length. At this time, the torsion spring 5 accumulates rebound force due to the stretching of the connecting line 6 and maintains the tension of the connecting line 6 through the mounting seat 7. After the ranging module 9 completes the hard pressure plate status detection and verification, the crossbar 1 is folded back into the positioning plate 2 to complete the storage of the device. At this time, the ranging module 9 is engaged with the slot 11, and the torsion spring 5 releases the rebound force to automatically retract the connecting line 6 so that it is rewound inside the take-up box 4.
[0025] See Figure 1 The end of the positioning plate 2 away from the crossbar 1 is hinged with a protective shell 3. The protective shell 3 is fitted on the outside of the positioning plate 2 to provide dustproof and collision protection. A groove 13 is provided at the center of the bottom of the protective shell 3. The groove 13 is engaged with the cable take-up box 4 to enhance the overall structural stability.
[0026] See Figure 2 The protective shell 3 is threaded with a bolt 8. The threaded part of the bolt 8 passes through the protective shell 3 and is threadedly connected to the positioning plate 2, further locking the protective shell 3 and preventing accidental opening or loosening.
[0027] See Figure 1The corners of the card slot 11 are all provided with rounded transition parts 12, which can reduce stress concentration and prevent the card slot 11 from cracking due to repeated insertion and removal of the ranging module 9. At the same time, it facilitates the guiding and alignment of the ranging module 9 and improves the smoothness of assembly. Multiple indicator lights 10 are installed on the top of the crossbar 1. The housing of the indicator lights 10 is made of transparent polycarbonate material, which is suitable for harsh working conditions such as high temperature and humidity and oil pollution in hydropower stations, and is not easy to yellow or age. The indicator lights 10 are located on one side of the ranging module 9, and the number of indicator lights 10 is the same as the number of ranging modules 9. They are used to provide local lighting in low light environments to help operators observe the working area of the ranging module 9 or the detection position of the hard pressure plate.
[0028] Working principle:
[0029] During operation, loosen bolt 8 and open protective shell 3. Rotate crossbar 1 outward from the opening side of positioning plate 2, adjust ranging module 9 to a suitable detection position, and simultaneously extend connecting wire 6 from inside retractor box 4 to the required length. At this time, torsion spring 5 accumulates rebound force due to the stretching of connecting wire 6. Ranging module 9 detects and verifies the state of hard pressure plate. During the detection process of ranging module 9, indicator light 10 on crossbar 1 provides local illumination. The transparent polycarbonate indicator light 10 adapts to the on-site environment and assists in observing the detection area. After completion, fold crossbar 1 back into positioning plate 2. Torsion spring 5 releases rebound force and automatically retracts connecting wire 6 into retractor box 4. At this time, ranging module 9 and slot 11 re-engage. Protective shell 3 covers positioning plate 2. Secure protective shell 3 and positioning plate 2 by tightening bolt 8, completing the device storage.
[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A device for detecting and verifying the condition of a hard plate in a hydropower station, comprising a take-up box (4), characterized in that, The top of the take-up box (4) is fixedly connected to a positioning plate (2). One side of the positioning plate (2) is open. A crossbar (1) is hinged to the inner wall of the positioning plate (2). A distance measuring module (9) is installed at intervals on the top of the crossbar (1). A slot (11) that cooperates with the distance measuring module (9) is opened on the top of the positioning plate (2). The distance measuring module (9) is engaged with the slot (11). The take-up box (4) is equipped with a take-up mechanism inside.
2. The hydropower station hard plate condition detection and verification device as described in claim 1, characterized in that: The take-up mechanism includes a torsion spring (5) fixedly connected to the inside of the take-up box (4). One end of the torsion spring (5) is fixedly connected to a mounting base (7). A connecting wire (6) is fixedly connected to the side of the mounting base (7) away from the torsion spring (5). One end of the connecting wire (6) passes through the side wall of the take-up box (4) and is electrically connected to the ranging module (9).
3. The hydropower station hard plate condition detection and verification device as described in claim 1, characterized in that: The positioning plate (2) is hinged to a protective shell (3) at the end away from the crossbar (1), and the protective shell (3) is fitted over the outside of the positioning plate (2).
4. The hydropower station hard plate condition detection and verification device as described in claim 1, characterized in that: The corners of the card slots (11) are all provided with rounded transition parts (12).
5. The hydropower station hard plate condition detection and verification device as described in claim 1, characterized in that: Multiple indicator lights (10) are installed on the top of the crossbar (1). The indicator lights (10) are located on one side of the ranging module (9). The number of indicator lights (10) is the same as the number of ranging modules (9).
6. The hydropower station hard plate condition detection and verification device as described in claim 3, characterized in that: The protective shell (3) has a groove (13) at the center of its bottom, and the groove (13) is engaged with the cable take-up box (4).
7. The hydropower station hard plate condition detection and verification device as described in claim 3, characterized in that: The protective shell (3) is threaded with a bolt (8), the threaded part of the bolt (8) penetrates the protective shell (3) and is threadedly connected to the positioning plate (2).
8. The hydropower station hard plate condition detection and verification device as described in claim 5, characterized in that: The housing of the indicator light (10) is made of transparent polycarbonate.