An interlocking structure between an operating mechanism of an environmentally friendly gas-insulated ring main unit and a cable room door

Abstract

The utility model relates to an interlocking structure between an operating mechanism of an environmentally friendly gas-insulated ring network cabinet and a cable room door, which is used for an interlocking structure between cabinet doors in a power distribution system. Its purpose is to provide a safe and reliable interlocking structure. The utility model relates to an interlocking structure between an operating mechanism of an environmentally friendly gas-insulated ring network cabinet and a cable room door, which comprises an operating mechanism interlocking assembly and a cable room door interlocking assembly. The operating mechanism interlocking assembly comprises an interlocking pressure plate linked to a grounding operating shaft of the operating mechanism, the interlocking pressure plate drives the interlocking guide rod assembly to move, and the interlocking screw sleeve below the interlocking guide rod assembly is clamped on the cable room door interlocking U-shaped card groove of the cable room door interlocking assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission equipment, in particular to an interlocking structure of an operating mechanism of an environmentally friendly gas-insulated ring network cabinet and a cable room door. Background Art

[0002] In the power transmission and distribution system, the 12kV environmentally friendly gas-insulated ring main unit (RMU) as a distribution network product has been increasingly promoted and applied under the support of the national low-carbon environmental protection policy. However, with the rapid development of the national economy and the continuous improvement of domestic living standards, the safety and reliability requirements for distribution equipment are becoming increasingly higher, so the safety requirements for environmentally friendly gas-insulated ring main units are also becoming increasingly higher.

[0003] The national standard clearly stipulates that the door of the cable room must not be opened when the cable room of the switch cabinet is energized. Therefore, for the 12kV environmentally friendly gas-insulated ring network cabinet, the door of the cable room is only allowed to be opened when the operating mechanism of the main switch is in the open and grounded state, that is, when the main switch is open and grounded.

[0004] However, the interlocking between the operating mechanism of the main switch and the cable room door of the 12kV environmentally friendly gas-insulated ring main unit currently on the market is not reliable. When the operating mechanism is in the closed state, that is, the main switch is in the closed position and the cable room is energized, or when the main switch is not safely grounded, the cable room door can still be opened, causing serious safety hazards. Therefore, a new, safe and reliable interlocking structure must be developed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a safe and reliable interlocking structure between the operating mechanism of the environmentally friendly gas insulated ring network cabinet and the cable room door, which ensures that the cable room door can be opened only when the operating mechanism is disconnected and in a grounded state, and the cable room is completely de-energized.

[0006] The utility model discloses an interlocking structure of an operating mechanism of an environmentally friendly gas insulated ring network cabinet and a cable room door, comprising an operating mechanism interlocking assembly and a cable room door interlocking assembly. The operating mechanism interlocking assembly comprises an interlocking pressure plate linked to a grounding operating shaft of the operating mechanism, the interlocking pressure plate drives the interlocking guide rod assembly to move, and the interlocking screw sleeve below the interlocking guide rod assembly is clamped on the cable room door interlocking U-shaped card groove of the cable room door interlocking assembly.

[0007] The utility model discloses an interlocking structure of an operating mechanism of an environmentally friendly gas insulated ring network cabinet and a cable room door, wherein the interlocking pressure plate is fixedly mounted on a grounding operating shaft of the operating mechanism and can rotate along with the grounding operating shaft of the operating mechanism.

[0008] The utility model discloses an interlocking structure of an operating mechanism of an environmentally friendly gas insulated ring network cabinet and a cable room door, wherein the interlocking guide rod is movably installed in the operating mechanism along the vertical direction and can move along the vertical direction.

[0009] The utility model discloses an interlocking structure for an operating mechanism of an environmentally friendly gas-insulated ring network cabinet and a cable room door, wherein a reset spring is installed between the interlocking guide rod assembly and the shell of the operating mechanism.

[0010] The utility model discloses an interlocking structure of an operating mechanism of an environmentally friendly gas-insulated ring network cabinet and a cable room door, wherein the interlocking screw sleeve is provided with a step which is clamped on an interlocking U-shaped clamping groove of the cable room door.

[0011] The utility model discloses an interlocking structure of an environmentally friendly gas insulated ring network cabinet operating mechanism and a cable room door, wherein the side surfaces of the cable room door are processed with cable room door hanging interfaces, which are clamped on the limiting shafts on both sides of the door body.

[0012] The interlocking structure of the operating mechanism of an environmentally friendly gas insulated ring network cabinet and the cable room door of the utility model is different from the prior art in that the interlocking structure of the operating mechanism of an environmentally friendly gas insulated ring network cabinet and the cable room door of the utility model drives the interlocking guide rod assembly up and down through the interlocking pressure plate, and the interlocking guide rod assembly limits whether the cable room door is allowed to be opened through the interlocking screw sleeve below, which can effectively prevent the cable room door from being opened when the switch is not turned to the grounding position, causing the danger of the operator accidentally entering the live interval.

[0013] The interlocking structure of the operating mechanism of an environmentally friendly gas insulated ring main unit and the cable room door of the present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of an environmentally friendly gas insulated ring main unit;

[0015] Figure 2 This is a schematic diagram of the interlocking structure of an environmentally friendly gas insulated ring main unit operating mechanism and a cable room door according to the present invention;

[0016] Figure 3 This is a structural diagram of an operating mechanism interlocking assembly in an interlocking structure between an operating mechanism of an environmentally friendly gas insulated ring main unit and a cable room door according to the present invention;

[0017] Figure 4 This is a structural schematic diagram of a cable room door interlocking assembly in an interlocking structure between an operating mechanism of an environmentally friendly gas insulated ring main unit and a cable room door according to the present invention;

[0018] Figure 5This is a structural schematic diagram of the inner side of the cable room door interlocking assembly in the interlocking structure between the operating mechanism of an environmentally friendly gas insulated ring main unit and the cable room door of the present invention;

[0019] Figure 6 This is a side view of a cable room door interlocking assembly in an interlocking structure between an operating mechanism of an environmentally friendly gas insulated ring main unit and a cable room door according to the present invention;

[0020] The markings in the figure are as follows: 1-operating mechanism room panel; 2-cable room door; 3-operating mechanism; 4-cable room; 5-limiting shaft; 6-operating mechanism interlocking pressure plate; 7-interlocking guide rod assembly; 8-operating mechanism interlocking screw sleeve; 9-operating mechanism grounding operating shaft; 10-reset spring; 11-cable room door interlocking U-shaped slot; 12-cable room door hanging interface. DETAILED DESCRIPTION

[0021] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0022] like Figures 1-6 As shown, the interlocking structure of the operating mechanism of the environmentally friendly gas insulated ring main unit and the cable room door of the utility model includes an operating mechanism interlocking component and a cable room door interlocking component, and the two components are installed in conjunction with each other to form an interlocking structure.

[0023] like Figure 2 and Figure 3 As shown, the operating mechanism interlock assembly includes an interlocking pressure plate 6, an interlocking guide rod assembly 7 and an interlocking screw sleeve 8. The interlocking pressure plate 6 is installed on the operating mechanism grounding operating shaft 9 and can rotate coaxially with the operating mechanism grounding operating shaft 9.

[0024] The interlocking guide rod assembly 7 is vertically mounted in the operating mechanism and is capable of vertical movement. The interlocking guide rod assembly 7 contacts the interlocking pressure plate 6. When the interlocking pressure plate 6 rotates with the operating mechanism grounding operating shaft 9, the interlocking pressure plate 6 can drive the interlocking guide rod assembly 7 to move or limit the interlocking guide rod assembly 7.

[0025] A reset spring 10 is installed between the interlocking guide rod assembly 7 and the housing of the operating mechanism. The reset spring 10 can apply a thrust to the interlocking guide rod assembly 7 to reset the interlocking guide rod assembly 7.

[0026] Interlocking screw sleeve 8 is installed below interlocking guide rod assembly 7 and can move with interlocking guide rod assembly 7. Interlocking screw sleeve 8 is provided with a step and can be used in conjunction with the cable room door interlock assembly.

[0027] like Figure 4-Figure 6As shown, the cable room door interlocking assembly includes a cable room door, and a cable room door interlocking U-shaped groove 11 is processed on the top of the cable room door. The step of the interlocking screw sleeve 8 is stuck on the cable room door interlocking U-shaped groove 11 of the cable room door 2, forming a linkage between the cable room door and the operating mechanism interlocking assembly.

[0028] The side of the cable room door is processed with a cable room door hanging interface 12, which is stuck on the limit shaft 5 on both sides of the cable room 4. When the cable room door 2 is opened, it needs to be lifted up to disengage the cable room door 2 from the limit shaft 5.

[0029] The working principle of the interlocking structure of the operating mechanism of the environmentally friendly gas insulated ring main unit and the cable room door of the utility model is as follows:

[0030] When the switch is in the off state, that is, the switch has not yet reached the grounding state, it cannot be guaranteed that the cable room 4 is safe and not electrified, so it is required that the cable room door 2 cannot be opened at this time, and the implementation method is as follows: the operating mechanism interlocking screw sleeve 8 on the operating mechanism 3 is provided with a step, and this step is stuck in the cable room door interlock U-shaped groove 11 of the cable room door 2; there is a cable room door hanging interface 12 on the cable room door 2, and the cable room door hanging interface 12 is stuck on the limit shaft 5. If the cable room door 2 is to be opened, it must be lifted upward, and lifting upward will drive the operating mechanism interlocking screw sleeve 8 and the interlocking guide rod assembly 7 to move upward together, but at this time the operating mechanism interlocking pressure plate 6 presses the operating mechanism interlocking screw sleeve 8, so that the operating mechanism interlocking screw sleeve 8 and the interlocking guide rod assembly 7 cannot move upward, so it is guaranteed that the cable room door 2 cannot be opened;

[0031] If you want to open the cable room door 2, you must turn the switch to the ground state to ensure that the inside of the cable room 4 is safe. This is achieved by rotating the operating mechanism grounding operating shaft 9 clockwise, and the operating mechanism interlocking pressure plate 6 stuck on the operating mechanism grounding operating shaft 9 is turned from the current horizontal state to the vertical state, and no longer presses the interlocking guide rod assembly 7. At this time, the cable room door 2 can be opened by lifting it upward. After the cable room door 2 is removed, the reset spring 10 of the mechanism applies upward pressure to keep the interlocking guide rod assembly 7 in the lifted position.

[0032] When the operating mechanism rotates to close or open the switch, the interlocking pressure plate drives the interlocking guide rod assembly up and down. The interlocking guide rod assembly uses the interlocking screw sleeve below to restrict whether the cable compartment door is allowed to open. If the operating mechanism is in the grounding position, the cable compartment door can be removed only when it is lifted upwards; otherwise, the door cannot be opened. Therefore, the interlocking structure between the operating mechanism and the cable compartment door of the environmentally friendly gas-insulated ring main unit of the utility model can effectively prevent the cable compartment door from being opened when the switch is not in the grounding position, which could cause the operator to accidentally enter the live compartment.

[0033] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. An interlocking structure between an operating mechanism of an environmentally friendly gas insulated ring main unit and a cable room door, characterized in that: It includes an operating mechanism interlocking assembly and a cable room door interlocking assembly. The operating mechanism interlocking assembly includes an interlocking pressure plate linked to the operating mechanism grounding operating shaft. The interlocking pressure plate drives the interlocking guide rod assembly to move. The interlocking screw sleeve below the interlocking guide rod assembly is stuck in the cable room door interlocking U-shaped groove of the cable room door interlocking assembly.

2. The interlocking structure of the operating mechanism of the environmentally friendly gas insulated ring main unit and the cable room door according to claim 1 is characterized in that: The interlocking pressure plate is fixedly mounted on the grounding operating shaft of the operating mechanism and can rotate along with the grounding operating shaft of the operating mechanism.

3. The interlocking structure of the operating mechanism of the environmentally friendly gas insulated ring main unit and the cable room door according to claim 1 is characterized in that: The interlocking guide rod assembly is movably installed in the operating mechanism along the vertical direction and can move along the vertical direction.

4. The interlocking structure of the operating mechanism of the environmentally friendly gas insulated ring main unit and the cable room door according to claim 1 is characterized in that: A return spring is installed between the interlocking guide rod assembly and the housing of the operating mechanism.

5. The interlocking structure of the operating mechanism of the environmentally friendly gas insulated ring main unit and the cable room door according to claim 1, characterized in that: The interlocking screw sleeve is provided with a step, and the step is clamped on the interlocking U-shaped clamping groove of the cable chamber door.

6. The interlocking structure of the operating mechanism of the environmentally friendly gas insulated ring main unit and the cable room door according to claim 1, characterized in that: The side of the cable room door is processed with a cable room door hanging interface, and the cable room door hanging interface is clamped on the limit shafts on both sides of the cable room.

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