A kind of secondary security protection device for transformer substation
By using fully enclosed panels and maintenance isolation locks in substations, the problems of easy detachment and accidental contact with traditional protective measures have been solved, achieving efficient and reliable safety protection for secondary circuits and ensuring safety and stability during construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHAN INTELLIGENT DEBUGGING TECHNOLOGY (ZHANJIANG CITY) CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional protective measures for secondary circuits in substations are prone to detachment, making them difficult to detect and re-secure in a timely manner, leading to safety hazards. Furthermore, accidental contact with secondary circuits by construction workers often results in safety accidents.
Safety protection devices are adopted, including a fully enclosed panel for the operation panel, terminal blocks, circuit breakers, pressure plates and change handles, as well as a maintenance isolation lock. The fully enclosed structure is constructed through the latches and maintenance isolation locks to prevent unauthorized access and malicious damage.
It effectively isolates high-risk secondary circuits in substations, preventing accidental contact and malicious damage, ensuring safety and stability during construction, and possessing good durability and stability.
Smart Images
Figure CN224367372U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power system technology, specifically to a secondary safety protection device for substations. Background Technology
[0002] In substations and converter stations—critical components of power systems—secondary circuits undertake multiple core functions, including control, protection, and monitoring. Their safety and stability directly affect the reliable operation of the entire power grid. Traditionally, safety protection for secondary circuits during construction, technical upgrades, expansions, and routine maintenance has relied primarily on simple physical isolation methods, such as wrapping wire ends with insulating tape or covering terminal blocks. However, these methods have significant safety hazards and limitations.
[0003] Specifically, traditional protective measures are prone to falling off, and once they fall off, they are often difficult to detect and re-fix in time, leading to protective failure. In addition, during the operation, construction workers may accidentally touch these unprotected secondary circuits due to insufficient safety awareness or improper operation, which may lead to safety accidents and pose a serious threat to the stable operation of the power grid. Utility Model Content
[0004] The purpose of this invention is to provide a secondary safety protection device for substations to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a secondary safety protection device for substations, comprising a safety protection device including an operating panel safety protection, a terminal block safety protection, a circuit breaker safety protection, a pressure plate safety protection, and a changeover handle safety protection. The operating panel safety protection includes a first latch, a fully enclosed operating panel, and a first maintenance isolation lock. The operating panel safety protection fixes the fully enclosed operating panel through the first latch, and the first maintenance isolation lock is installed on the first latch.
[0006] As a preferred technical solution of this utility model, the terminal block safety protection includes a buckle, a two-section panel for splicing the terminal block, and a second maintenance isolation lock; the two-section panel for splicing the terminal block includes a short plate with a length of 40cm and a long plate with a length of 75cm, and the terminal block safety protection is fixed to the two-section panel for splicing the terminal block by the buckle, and the second maintenance isolation lock is installed on the buckle.
[0007] As a preferred technical solution of this utility model, the circuit breaker safety protection includes a second latch, a fully enclosed circuit breaker panel, and a third maintenance isolation lock; the circuit breaker safety protection fixes the fully enclosed circuit breaker panel through the second latch, and the third maintenance isolation lock is installed on the second latch.
[0008] As a preferred technical solution of this utility model, the pressure plate safety protection includes a third latch, a fully enclosed pressure plate panel, and a fourth maintenance isolation lock; the pressure plate safety protection is fixed to the fully enclosed pressure plate panel by the third latch, and the fourth maintenance isolation lock is installed on the third latch.
[0009] As a preferred technical solution of this utility model, the safety protection of the conversion handle includes a fourth latch, a fully enclosed panel of the conversion handle, and a fifth maintenance isolation lock; the safety protection of the conversion handle is fixed to the fully enclosed panel of the conversion handle by the fourth latch, and the fifth maintenance isolation lock is installed on the fourth latch.
[0010] As a preferred embodiment of this utility model, the buckle includes a buckle plate, a fixed hook is fixedly connected to the buckle plate, a sliding groove is provided on the buckle plate, a slider is slidably connected in the sliding groove, a movable hook is fixedly connected to the slider, and a locking hook is fixedly connected to the slider.
[0011] As a preferred technical solution of this utility model, the fully enclosed panel of the conversion handle includes a V-shaped sealing plate, two connectors are symmetrically fixedly connected to the V-shaped sealing plate, and two side sealing plates are symmetrically fastened to the V-shaped sealing plate.
[0012] As a preferred technical solution of this utility model, the fully enclosed air switch panel includes a U-shaped panel, on which two mounting plates are symmetrically fixedly connected. Both mounting plates are provided with pin holes, and one of the mounting plates is provided with a lock hole corresponding to the second latch.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This utility model, through its safety protection device, can efficiently and reliably isolate and protect high-risk secondary circuits in substations. Compared with traditional, simple methods such as wrapping with insulating tape or sealing terminal blocks, this device adopts more advanced and reliable technical means to ensure the safety of secondary circuits during construction, technical renovation, expansion, and daily maintenance. It can effectively isolate high-risk circuits, prevent construction personnel from accidentally touching them, and should also have good durability and stability to ensure long-lasting and effective protection. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the architecture of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the first locking buckle in this utility model.
[0017] Figure 3 This is a schematic diagram of the buckle structure in this utility model.
[0018] Figure 4 This is an exploded view of the buckle structure in this utility model.
[0019] Figure 5 This is a schematic diagram of the fully enclosed operating panel in this utility model.
[0020] Figure 6 This is a schematic diagram of the structure of the two-section panel spliced with the terminal block in this utility model.
[0021] Figure 7 This is a schematic diagram of the structure of the hollow-open fully enclosed panel of this utility model.
[0022] Figure 8 This is a schematic diagram of the structure of the fully enclosed panel of the medium pressure plate of this utility model.
[0023] Figure 9 This is a schematic diagram of the fully enclosed panel for the conversion handle in this utility model.
[0024] Figure 1 In the middle section: 1. Safety protection device; 2. Safety protection for the operating panel; 21. First locking latch; 22. Fully enclosed operating panel; 23. First maintenance isolation lock; 3. Terminal block safety protection; 31. Buckle; 311. Buckle plate; 312. Fixed hook; 313. Sliding groove; 314. Sliding block; 315. Movable hook; 316. Hook; 32. Two-section panel spliced with terminal block; 321. Short plate; 322. Long plate; 33. Second maintenance isolation lock; 4. Circuit breaker safety protection; 41. Second latch; 42. Fully enclosed panel for circuit breaker; 421. U-shaped panel; 422. Mounting plate; 423. Pin hole; 424. Lock hole; 43. Third maintenance isolation lock; 5. Pressure plate safety protection; 51. Third latch; 52. Fully enclosed panel for pressure plate; 53. Fourth maintenance isolation lock; 6. Safety protection for the switching handle; 61. Fourth latch; 62. Fully enclosed panel for switching handle; 621. V-shaped sealing plate; 622. Connector; 623. Side sealing plate; 63. Fifth maintenance isolation lock. Detailed Implementation
[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0026] Please see Figure 1-9This utility model provides a safety protection device 1 including an operation panel safety protection 2, a terminal block safety protection 3, a circuit breaker safety protection 4, a pressure plate safety protection 5, and a change handle safety protection 6. The operation panel safety protection 2 includes a first latch 21, an operation fully enclosed panel 22, and a first maintenance isolation lock 23. The operation panel safety protection 2 fixes the operation fully enclosed panel 22 through the first latch 21. The first maintenance isolation lock 23 is installed on the first latch 21. The first latch 21, the second latch 41, the third latch 51, and the fourth latch 61 are common components with the same structure.
[0027] The first latch 21 is used to secure the fully enclosed operating panel 22 to prevent unauthorized operation;
[0028] The fully enclosed control panel 22 covers the control panel, forming a fully enclosed structure to prevent accidental touch or malicious damage;
[0029] The first inspection isolation lock 23 is installed on the first latch 21, providing additional security and ensuring that only authorized personnel can operate it.
[0030] The terminal block safety protection 3 includes a buckle 31, a two-section panel 32 for splicing the terminal block, and a second maintenance isolation lock 33. The two-section panel 32 for splicing the terminal block includes a short plate 321 with a length of 40cm and a long plate 322 with a length of 75cm. The terminal block safety protection 3 secures the two-section panel 32 for splicing the terminal block with the buckle 31. The second maintenance isolation lock 33 is installed on the buckle 31, serving as an additional safety barrier, effectively enhancing the protective performance and preventing unauthorized malicious disassembly. The short plate 321 and the long plate 322 can be flexibly spliced according to the actual size of the terminal block to ensure the completed two-section panel 3 for splicing the terminal block. 2. The length slightly exceeds the length of the terminal block, thus achieving full coverage and protection of the terminal block. During installation, first, the clip 31 is firmly installed on the terminal block. Then, the spliced terminal block two-section panel 32 is placed on top of the terminal block, ensuring that the spliced terminal block two-section panel 32 and the terminal block are tightly fitted together, thereby constructing a closed and safe protective structure. Next, the second maintenance isolation lock 33 is installed to ensure that the second maintenance isolation lock 33 can firmly lock the spliced terminal block two-section panel 32, effectively preventing any unauthorized access attempts or malicious disassembly, thereby fully ensuring the safety and stable operation of the terminal block.
[0031] The circuit breaker safety protection 4 includes a second latch 41, a fully enclosed circuit breaker panel 42, and a third maintenance isolation lock 43. The circuit breaker safety protection 4 uses the second latch 41 to fix the fully enclosed circuit breaker panel 42, and the third maintenance isolation lock 43 is installed on the second latch 41. The circuit breaker safety protection 4 is mainly composed of the second latch 41, the fully enclosed circuit breaker panel 42, and the third maintenance isolation lock 43. The installation position of the second latch 41 is determined according to the size and shape of the circuit breaker. The second latch 41 should be installed on the edge where the fully enclosed circuit breaker panel 42 contacts the circuit breaker, ensuring that the fully enclosed circuit breaker panel 42 can fit tightly against the circuit breaker. During installation, the second latch 41 is fixed in the predetermined position on the switch, ensuring that the second latch 41 is firmly installed without any looseness. The fully enclosed circuit breaker panel 42 is placed above the circuit breaker, ensuring that the fully enclosed circuit breaker panel 42 is completely in contact with the contact surface of the circuit breaker. Then, the second latch 41 fixes the fully enclosed circuit breaker panel 42 to the circuit breaker, forming a fully enclosed structure to achieve comprehensive coverage and protection of the circuit breaker. The third maintenance isolation lock 43 is installed on the second latch 41, ensuring that the third maintenance isolation lock 43 can firmly lock the fully enclosed circuit breaker panel 42 to prevent unauthorized access or malicious damage.
[0032] The pressure plate safety protection 5 includes a third latch 51, a fully enclosed pressure plate panel 52, and a fourth maintenance isolation lock 53. The pressure plate safety protection 5 uses the third latch 51 to fix the fully enclosed pressure plate panel 52. The fourth maintenance isolation lock 53 is installed on the third latch 51. The installation position of the third latch 51 is determined according to the size and shape of the pressure plate. The third latch 51 should be installed on the edge where the fully enclosed pressure plate panel 52 contacts the pressure plate, ensuring that the fully enclosed pressure plate panel 52 can fit tightly against the pressure plate. During installation, the third latch 51 is secured... Position the third latch 51 securely in the designated location, ensuring it is firmly installed without any looseness. Place the fully enclosed pressure plate panel 52 on top of the pressure plate, ensuring that the contact surface of the fully enclosed pressure plate panel 52 is completely in contact with the pressure plate. Then, the third latch 51 fixes the fully enclosed pressure plate panel 52 onto the pressure plate, forming a fully enclosed structure to achieve comprehensive coverage and protection of the pressure plate. Install the fourth maintenance isolation lock 53 on the third latch 51, ensuring that the fourth maintenance isolation lock 53 can firmly lock the fully enclosed pressure plate panel 52 to prevent unauthorized access or malicious damage.
[0033] The safety protection 6 for the shift handle includes a fourth latch 61, a fully enclosed panel 62 for the shift handle, and a fifth maintenance isolation lock 63. The safety protection 6 secures the fully enclosed panel 62 to the shift handle via the fourth latch 61. The fifth maintenance isolation lock 63 is installed on the fourth latch 61. The installation position of the fourth latch 61 is determined according to the size and shape of the shift handle or button. The fourth latch 61 should be installed on the edge where the fully enclosed panel 62 contacts the shift handle or button, ensuring that the fully enclosed panel 62 fits tightly against the shift handle or button. During installation, the fourth latch 61 is secured. In the predetermined position, ensure that the fourth latch 61 is securely installed without any looseness. Place the fully enclosed panel 62 of the changeover handle above the changeover handle or button, ensuring that the fully enclosed panel 62 of the changeover handle is completely in contact with the contact surface of the changeover handle or button. Then, the fourth latch 61 fixes the fully enclosed panel 62 of the changeover handle to the changeover handle or button, forming a fully enclosed structure to achieve comprehensive coverage and protection of the changeover handle or button. Install the fifth maintenance isolation lock 63 on the fourth latch 61, ensuring that the fifth maintenance isolation lock 63 can firmly lock the fully enclosed panel 62 of the changeover handle to prevent unauthorized access or malicious damage.
[0034] The buckle 31 includes a buckle plate 311, on which a fixed hook 312 is fixedly connected. A sliding groove 313 is provided on the buckle plate 311, and a slider 314 is slidably connected in the sliding groove 313. A movable hook 315 is fixedly connected to the slider 314, and a latch 316 is fixedly connected to the slider 314. The fixed hook 312, latch 316, and flexibly adjustable movable hook 315 are used to fix the two-section panel 32 of the fixed terminal block splicing.
[0035] The fully enclosed panel 62 of the conversion handle includes a V-shaped sealing plate 621, on which two connectors 622 are symmetrically fixedly connected, and two side sealing plates 623 are symmetrically fastened to the V-shaped sealing plate 621. The connectors 622 can improve the convenience of fixing the fully enclosed panel 62 of the conversion handle.
[0036] The fully enclosed air switch panel 42 includes a U-shaped panel 421, on which two mounting plates 422 are symmetrically fixedly connected. Both mounting plates 422 are provided with pin holes 423. One of the mounting plates 422 is provided with a lock hole 424 corresponding to the second latch 41. The pin holes 423 can improve the ease of installation of the fully enclosed air switch panel 42, and the lock hole 424 can facilitate the second latch 41 to pass through the fully enclosed air switch panel 42.
[0037] Working principle: The first latch 21 is used to fix the fully enclosed operating panel 22 to prevent unauthorized operation; the fully enclosed operating panel 22 covers the operating panel to form a fully enclosed structure to prevent accidental contact or malicious damage. The first maintenance isolation lock 23 is installed on the first latch 21 to provide additional safety protection and ensure that only authorized personnel can operate it.
[0038] First, securely install the buckle 31 onto the terminal block. Then, place the spliced terminal block two-section panel 32 on top of the terminal block, ensuring that the spliced terminal block two-section panel 32 and the terminal block are tightly fitted together to create a closed and secure protective structure. Next, install the second maintenance isolation lock 33 to ensure that the second maintenance isolation lock 33 can securely lock the spliced terminal block two-section panel 32, effectively preventing any unauthorized access attempts or malicious disassembly, thereby fully ensuring the safety and stable operation of the terminal block.
[0039] Secure the second latch 41 to the predetermined position, ensuring that the second latch 41 is firmly installed without any looseness. Place the fully enclosed circuit breaker panel 42 above the circuit breaker, ensuring that the fully enclosed circuit breaker panel 42 is completely in contact with the contact surface of the circuit breaker. Then, the second latch 41 secures the fully enclosed circuit breaker panel 42 to the circuit breaker, forming a fully enclosed structure to achieve comprehensive coverage and protection of the circuit breaker. Install the third maintenance isolation lock 43 on the second latch 41, ensuring that the third maintenance isolation lock 43 can firmly lock the fully enclosed circuit breaker panel 42 to prevent unauthorized access or malicious damage.
[0040] Secure the fourth latch 61 to the predetermined position, ensuring that the fourth latch 61 is firmly installed without any looseness. Place the fully enclosed panel 62 of the changeover handle above the changeover handle or button, ensuring that the fully enclosed panel 62 of the changeover handle is completely in contact with the contact surface of the changeover handle or button. Then, the fourth latch 61 fixes the fully enclosed panel 62 of the changeover handle to the changeover handle or button, forming a fully enclosed structure to achieve comprehensive coverage and protection of the changeover handle or button. Install the fifth maintenance isolation lock 63 on the fourth latch 61, ensuring that the fifth maintenance isolation lock 63 can firmly lock the fully enclosed panel 62 of the changeover handle to prevent unauthorized access or malicious damage.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A secondary safety protection device for substations, characterized in that: The device includes a safety protection device (1), which includes an operation panel safety protection device (2), a terminal block safety protection device (3), a circuit breaker safety protection device (4), a pressure plate safety protection device (5), and a change handle safety protection device (6). The operation panel safety protection device (2) includes a first latch (21), an operation fully enclosed panel (22), and a first maintenance isolation lock (23). The operation panel safety protection device (2) fixes the operation fully enclosed panel (22) through the first latch (21), and the first maintenance isolation lock (23) is installed on the first latch (21).
2. A secondary safety device for a substation according to claim 1, characterized in that: The terminal block safety protection (3) includes a buckle (31), a two-section panel (32) for splicing the terminal block, and a second maintenance isolation lock (33); the two-section panel (32) for splicing the terminal block includes a short plate (321) with a length of 40cm and a long plate (322) with a length of 75cm. The terminal block safety protection (3) fixes the two-section panel (32) for splicing the terminal block through the buckle (31), and the second maintenance isolation lock (33) is installed on the buckle (31).
3. A secondary safety device for a substation according to claim 1, characterized in that: The circuit breaker safety protection (4) includes a second latch (41), a fully enclosed circuit breaker panel (42), and a third maintenance isolation lock (43); the circuit breaker safety protection (4) fixes the fully enclosed circuit breaker panel (42) through the second latch (41), and the third maintenance isolation lock (43) is installed on the second latch (41).
4. The secondary safety protection device for a substation of claim 1, wherein: The pressure plate safety protection (5) includes a third latch (51), a pressure plate fully enclosed panel (52), and a fourth maintenance isolation lock (53); the pressure plate safety protection (5) fixes the pressure plate fully enclosed panel (52) through the third latch (51), and the fourth maintenance isolation lock (53) is installed on the third latch (51).
5. A secondary safety device for a substation according to claim 1, characterized in that: The safety protection (6) for the conversion handle includes a fourth latch (61), a fully enclosed panel (62) for the conversion handle, and a fifth maintenance isolation lock (63). The safety protection (6) for the conversion handle is fixed to the fully enclosed panel (62) for the conversion handle by the fourth latch (61), and the fifth maintenance isolation lock (63) is installed on the fourth latch (61).
6. A secondary safety device for a substation according to claim 2, characterized in that: The buckle (31) includes a buckle plate (311), a fixed hook (312) is fixedly connected to the buckle plate (311), a sliding groove (313) is provided on the buckle plate (311), a slider (314) is slidably connected in the sliding groove (313), a movable hook (315) is fixedly connected to the slider (314), and a latch (316) is fixedly connected to the slider (314).
7. A secondary safety device for a substation according to claim 5, characterized in that: The fully enclosed panel (62) of the conversion handle includes a V-shaped sealing plate (621), on which two connectors (622) are symmetrically fixedly connected, and two side sealing plates (623) are symmetrically fastened to the V-shaped sealing plate (621).
8. A secondary safety device for a substation according to claim 3, characterized in that: The air opening full-enclosed panel (42) comprises a U-shaped panel (421), two mounting plates (422) are fixedly connected on the U-shaped panel (421) in symmetry, pin holes (423) are formed in the two mounting plates (422), and a lock hole (424) corresponding to the second lock buckle (41) is formed in one of the mounting plates (422).