Ring main unit spare power automatic switching mechanical interlocking mechanism
By designing a mechanical chain structure in the ring mesh cabinet, it is ensured that when a ring network cabinet is switched and switched, the electric and manual of another ring network cabinet can be closed, which solves the existing technology. The problem of hidden safety hazards improved the safety of the circular network cabinet.
Patent Information
- Application Number
- CN202421142027.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In the prior art, the electrical interlocking solution for the incoming circuit cabinet cannot effectively prevent the manual closing of the incoming circuit switch, resulting in safety hazards.
Design a ring network cabinet to prepare from the speculative linking mechanism. By setting up the lock structure and the lower lock structure through the setting of the ring network cabinet body A and the body B, and ensuring that a ring network cabinet is entered, it is ensured When the wire switch is closed, the electric and manual of the other ring -to -network cabinet switch cannot be closed.
When a ring -connected network switch is closed, the other ring network cabinet's entry and switch cannot be closed, avoiding the safety hazards caused by the unable to achieve and the manual gates.
Smart Images
Figure CN222421700U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power equipment ring network cabinets, in particular to a ring network cabinet standby automatic start mechanical interlocking mechanism. Background Art
[0002] There are more and more places that are dedicated to high-reliability continuous power supply. When there are two ring main units with incoming lines, and one of them is supplying power and fails, the other standby incoming line needs to automatically supply power to ensure the continuity of power supply. However, the two incoming lines cannot supply power at the same time, otherwise it will cause safety accidents.
[0003] In the previous automatic backup scheme, the electrical interlocking scheme was basically adopted without mechanical interlocking. When two ring network cabinets were connected and one of the incoming switches was closed, the closing circuit of the other incoming switch was opened through the auxiliary switch node, making the electrical closing action impossible. However, the incoming switch could still be closed manually at this time, which would cause safety hazards.
[0004] In view of this, we propose a mechanical interlocking mechanism for the automatic backup of the ring main unit. Utility Model Content
[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a ring network cabinet with a self-closing mechanical interlocking mechanism to solve the technical problem that the current electrical closing action cannot be achieved, but the manual closing of the incoming line switch can still cause safety hazards.
[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a ring network cabinet automatic throw-in mechanical interlocking mechanism, including a ring network cabinet body A and a ring network cabinet body B;
[0007] An upper interlocking structure and a lower interlocking structure are respectively arranged inside the ring network cabinet body A and the ring network cabinet body B. The upper interlocking structure in the ring network cabinet body A is electrically connected to the lower interlocking structure in the ring network cabinet body B through electric wires, and the upper interlocking structure in the ring network cabinet body B is electrically connected to the lower interlocking structure in the ring network cabinet body A through electric wires; wherein, the ring network cabinet body A and the ring network cabinet body B are in a closed state and in an open state respectively.
[0008] Preferably, a circuit breaker switch is provided in each of the ring main unit body A and the ring main unit body B. The circuit breaker switch is provided with an energy storage shaft, a closing button and an opening button. The closing button and the opening button can be used manually to control closing and opening.
[0009] Preferably, the upper interlocking structure includes a fixing plate, an electric actuator body A, a driving shaft, a lock A and a brake plate;
[0010] The fixing plate is fixed in the ring main unit body A or the ring main unit body B; the electric actuator body A is fixed on the fixing plate; wherein the connection terminal of the electric actuator body A is connected to the electric wire; the driving shaft is arranged at the movable end of the electric actuator body A; the lock A is fixed in the ring main unit body A or the ring main unit body B; the gate piece is connected to the gate rod on the lock A; wherein one end of the driving shaft is rotatably connected to the outer end of the gate piece.
[0011] Preferably, the electric actuator body A is tiltedly arranged on the fixed plate, and the electric actuator body A tilts to push out the driving shaft, so that the gate plate moves without affecting the control of the lock A.
[0012] Preferably, the lower interlocking structure includes a lock B, an electric actuator body B, a power connection piece A and a power connection piece B;
[0013] The lock B is fixed in the ring main unit body A or the ring main unit body B; the electric actuator body B is fixed on the lock B; wherein the wiring terminal of the electric actuator body B is connected to the electric wire; the power terminal A is arranged at the driving end of the electric actuator body B; the power terminal B is elastically rotatably arranged in the ring main unit body A or the ring main unit body B; wherein the power terminal B is in contact and cooperation with the power terminal A.
[0014] Preferably, the contact end of the power strip B is higher than the contact end of the power strip A when in an open state.
[0015] Preferably, the push-out piece at the inner end of the power connection piece A is symmetrically arranged with two springs, and one end of the spring facing away from the power connection piece A is connected to the lock B.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] The utility model is provided with a fixing plate, an electric actuator body A, a driving shaft, a lock A, a gate plate, a lock B, an electric actuator body B, an electric connection plate A and an electric connection plate B. When the incoming line switch of the ring network cabinet body A is closed, the incoming line switch of the ring network cabinet body B cannot be closed either electrically or manually. On the contrary, when the incoming line switch of the ring network cabinet body B is closed, the incoming line switch of the ring network cabinet body A cannot be closed either electrically or manually. When the incoming line switch of the ring network cabinet body A is opened, the incoming line switch of the ring network cabinet body B can be closed either electrically or manually. On the contrary, when the incoming line switch of the ring network cabinet body B is opened, the incoming line switch of the ring network cabinet body A can be closed either electrically or manually. The utility model solves the problem that the electric closing action cannot be realized, but the incoming line switch can still be closed manually, which causes a safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the upper interlocking structure of the utility model;
[0020] Figure 3 It is a schematic diagram of the lower interlocking structure of the utility model;
[0021] In the figure: 1. Ring main unit A; 2. Ring main unit B; 3. Upper interlocking structure; 4. Lower interlocking structure; 5. Wires;
[0022] 301, fixing plate; 302, electric actuator body A; 303, lock A; 304, gate plate; 305, driving shaft;
[0023] 401, lock B; 402, electric actuator body B; 403, power connection plate A; 404, spring; 405, power connection plate B. DETAILED DESCRIPTION
[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0025] Embodiment 1: A mechanical interlocking mechanism for automatic switching of a ring main unit, see Figures 1 to 3 ;
[0026] It includes a ring network cabinet body A1 and a ring network cabinet body B2; a circuit breaker switch is provided in each of the ring network cabinet body A1 and the ring network cabinet body B2, and the circuit breaker switch is provided with an energy storage shaft, a closing button and an opening button, and the closing button and the opening button can be used manually to control the closing and opening. An upper interlocking structure 3 and a lower interlocking structure 4 are arranged inside the ring network cabinet body A1 and the ring network cabinet body B2, respectively. The upper interlocking structure 3 in the ring network cabinet body A1 is electrically connected to the lower interlocking structure 4 in the ring network cabinet body B2 through an electric wire 5, and the upper interlocking structure 3 in the ring network cabinet body B2 is electrically connected to the lower interlocking structure 4 in the ring network cabinet body A1 through an electric wire 5; wherein, the ring network cabinet body A1 and the ring network cabinet body B2 are in a closed state and in an open state, respectively.
[0027] The upper interlocking structure 3 includes a fixing plate 301, an electric actuator body A302, a driving shaft 305, a lock A303 and a gate piece 304; the fixing plate 301 is fixedly arranged in the ring main unit body A1 or the ring main unit body B2; the electric actuator body A302 is fixedly arranged on the fixing plate 301; wherein, the connection terminal of the electric actuator body A302 is connected to the electric wire 5; the driving shaft 305 is arranged at the movable end of the electric actuator body A302; the lock A303 is fixedly arranged in the ring main unit body A1 or the ring main unit body B2; the gate piece 304 is connected to the gate rod on the lock A303; wherein, one end of the driving shaft 305 is rotatably connected to the outer end of the gate piece 304.
[0028] The lower interlocking structure 4 includes a lock B401, an electric actuator body B402, a power terminal A403 and a power terminal B405; the lock B401 is fixedly arranged in the ring main unit body A1 or the ring main unit body B2; the electric actuator body B402 is fixedly arranged on the lock B401; wherein, the connection terminal of the electric actuator body B402 is connected to the electric wire 5; the power terminal A403 is arranged at the driving end of the electric actuator body B402; the power terminal B405 is elastically rotatably arranged in the ring main unit body A1 or the ring main unit body B2; wherein, the power terminal B405 is in contact and cooperation with the power terminal A403.
[0029] The utility model is provided with a fixing plate 301, an electric actuator body A302, a driving shaft 305, a lock A303, a gate plate 304, a lock B401, an electric actuator body B402, a power connection plate A403 and a power connection plate B405. When the incoming line switch of the ring network cabinet body A1 is closed, the incoming line switch of the ring network cabinet body B2 cannot be closed either electrically or manually. On the contrary, when the incoming line switch of the ring network cabinet body B2 is closed, the incoming line switch of the ring network cabinet body A1 cannot be closed either electrically or manually. When the incoming line switch of the ring network cabinet body A1 is opened, the incoming line switch of the ring network cabinet body B2 can be closed either electrically or manually. On the contrary, when the incoming line switch of the ring network cabinet body B2 is opened, the incoming line switch of the ring network cabinet body A1 can be closed either electrically or manually. This solves the problem that the electric closing action cannot be realized, but the manual closing of the incoming line switch can still be performed, which may cause safety hazards.
[0030] Embodiment 2: A mechanical interlocking mechanism for automatic switching of a ring main unit, see Figure 2 and Figure 3 ;
[0031] The electric actuator body A302 is tiltedly arranged on the fixing plate 301, and the electric actuator body A302 tilts to push out the driving shaft 305, so that the gate plate 304 moves without affecting the control of the lock A303.
[0032] When the contact end of the contact piece B405 is in the off state, it is higher than the contact end of the contact piece A403. After the contact piece B405 rotates down, the contact piece A403 is pushed out to block the contact piece B405 to block the contact piece B405 from making contact.
[0033] The push-out piece at the inner end of the power strip A403 is symmetrically arranged with two springs 404, and one end of the spring 404 away from the power strip A403 is connected to the lock B401, and the elastic coefficient of the spring 404 is selected by the technicians in this field according to the actual situation. The spring 404 is provided to realize the automatic reset of the power strip A403 after being pushed out.
[0034] Working principle: When the incoming line switch of the ring main unit A1 is closed, the incoming line switch of the ring main unit B2 cannot be closed either electrically or manually. Conversely, when the incoming line switch of the ring main unit B2 is closed, the incoming line switch of the ring main unit A1 cannot be closed either electrically or manually. When the incoming line switch of the ring main unit A1 is opened, the incoming line switch of the ring main unit B2 can be closed either electrically or manually. Conversely, when the incoming line switch of the ring main unit B2 is opened, the incoming line switch of the ring main unit A1 can be closed either electrically or manually.
[0035] When closing the circuit breaker, the gate piece 304 is pulled clockwise by the electric actuator body A302 in the ring main unit A1, and the contact piece A403 is pushed out and contacts the contact piece B405 by the electric actuator body B402 in the ring main unit B2. At this time, the gate piece 304 in the ring main unit B2 and the contact pieces A403 and B405 in the ring main unit A1 are in the open state. It can be switched between the ring main unit A1 and the ring main unit B2.
[0036] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.
Claims
1. A mechanical interlocking mechanism for a ring main unit, characterized in that: include: Ring main unit A (1) and ring main unit B (2); The ring network cabinet body A (1) and the ring network cabinet body B (2) are respectively provided with an upper interlocking structure (3) and a lower interlocking structure (4); the upper interlocking structure (3) in the ring network cabinet body A (1) is electrically connected to the lower interlocking structure (4) in the ring network cabinet body B (2) through an electric wire (5); and the upper interlocking structure (3) in the ring network cabinet body B (2) is electrically connected to the lower interlocking structure (4) in the ring network cabinet body A (1) through an electric wire (5); Among them, the ring main unit body A (1) and the ring main unit body B (2) are in a closed state and an open state respectively.
2. A mechanical interlocking mechanism for automatic switching of a ring main unit as claimed in claim 1, characterized in that: A circuit breaker switch is provided in each of the ring main unit A (1) and the ring main unit B (2), and the circuit breaker switch is provided with an energy storage shaft, a closing button and an opening button.
3. A mechanical interlocking mechanism for automatic switching of a ring main unit as claimed in claim 1, characterized in that: The upper interlocking structure (3) comprises: A fixing plate (301) is fixedly mounted in the ring main unit body A (1) or the ring main unit body B (2); The electric actuator body A (302) is fixed on the fixing plate (301); Wherein, the connection terminal of the electric actuator body A (302) is connected to the electric wire (5); A driving shaft (305) is arranged at the movable end of the electric actuator body A (302); The lock A (303) is fixedly mounted in the ring main unit body A (1) or the ring main unit body B (2); A gate piece (304) connected to a gate rod on the lock device A (303); Wherein, one end of the driving shaft (305) is rotatably connected to the outer end of the gate piece (304).
4. A mechanical interlocking mechanism for automatic switching of a ring main unit as claimed in claim 3, characterized in that: The electric actuator body A (302) is tiltedly arranged on the fixing plate (301).
5. The mechanical interlocking mechanism for automatic switching of a ring main unit as claimed in claim 1, characterized in that: The lower interlocking structure (4) comprises: The lock B (401) is fixedly mounted in the ring main unit body A (1) or the ring main unit body B (2); The electric actuator body B (402) is fixedly mounted on the lock B (401); Wherein, the connection terminal of the electric actuator body B (402) is connected to the electric wire (5); An electrical connection plate A (403) is arranged at the driving end of the electric actuator body B (402); A power connection piece B (405) is elastically rotatably arranged in the ring main unit body A (1) or the ring main unit body B (2); Wherein, the power connection piece B (405) contacts and cooperates with the power connection piece A (403).
6. A mechanical interlocking mechanism for automatic switching of a ring main unit as claimed in claim 5, characterized in that: The contact end of the power contact piece B (405) is higher than the contact end of the power contact piece A (403) when in the open state.
7. A mechanical interlocking mechanism for automatic switching of a ring main unit as claimed in claim 5, characterized in that: Two springs (404) are symmetrically arranged on the push-out piece at the inner end of the power connection piece A (403), and one end of the spring (404) facing away from the power connection piece A (403) is connected to the lock B (401).