CN218300743U

CN218300743U - Grounding locking safety protection device for ring main unit

Info

Publication number: CN218300743U
Application number: CN202220678026.1U
Authority: CN
Inventors: 任廷晶; 何祖谦; 黄亮; 杨运富
Original assignee: Guizhou Changtong Electric Co ltd
Current assignee: Guizhou Changtong Electric Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2023-01-13
Anticipated expiration: 2032-03-25

Abstract

The application relates to the field of distribution equipment, and particularly discloses a grounding locking safety protection device for a ring main unit, which comprises a transverse locking rod and a vertical locking column, wherein the transverse locking rod is axially arranged, and the vertical locking column is vertically arranged; the vertical lock column is supported by the supporting seat and can vertically move on the supporting seat to extend into the lower chamber door; the vertical lock post is provided with a through hole, and the transverse lock rod is inserted into the through hole to fix the vertical lock post. Has the advantages that: the locking can be carried out in the vertical direction and the horizontal direction, and the safety is improved.

Description

Grounding locking safety protection device for ring main unit

Technical Field

The utility model relates to a distribution equipment field, concretely relates to ground connection closure safety arrangement for looped netowrk cabinet.

Background

The ring network is a ring distribution network, namely a power supply main line forms a closed ring, a power supply supplies power to the ring main line, and the power is distributed outwards from the main line through a high-voltage switch all the way. This has the advantage that each power distribution branch can be supplied with power from both its left and right side rails. When the left main line fails, the left main line is continuously supplied with power from the right main line, and when the right main line fails, the right main line is continuously supplied with power from the left main line, so that the utility of the total power supply is similar to that of the two-way power supply, although the total power supply is one-way power supply, and the reliability of the power supply is improved.

The ring main unit is a switch cabinet (outgoing line switch cabinet) arranged on each power distribution branch, and a bus of the switch cabinet is a part of a ring main line at the same time. That is, the ring trunk is formed by connecting the buses of each outlet cabinet. Each outgoing line cabinet is called a ring main unit. Actually, the meaning of the ring network cannot be seen when one ring main unit is taken out independently.

The rated current of the ring main units is not large, so that the high-voltage switch of the ring main unit generally adopts a high-voltage load switch with a high-voltage fuse, which has a simple structure, instead of a breaker with a complex structure. That is, the high voltage switch in the ring main unit is generally a load switch. The ring main unit uses the load switch to operate normal current, and uses the fuse to cut off short-circuit current, and the combination of the two can replace the circuit breaker. This is of course limited to a certain capacity.

The switch cabinet can be completely used in a distribution system with a non-ring network structure, so that with the wide application of the switch cabinet, the ring network cabinet breaks out of the ring network distribution category and generally refers to a high-voltage switch cabinet taking a load switch as a main switch. The safety protection device for the grounding locking of the ring main unit in the scheme can also be applied to the switch cabinet.

The ring main unit usually sets up many casees according to the function difference, needs to lock between its upper and lower case, for example upper portion sets up control room (upper chamber) lower part and sets up high-pressure chamber (lower chamber), and the high-pressure chamber can not be opened at will when overhauing, only can open the high-pressure chamber cabinet door after need carrying out safety inspection at the control room. The ground connection locking structure among the prior art usually uses the rotatory lock structure in the lock, and rotatory handle one end sets up in the top, and closure fastener one end sets up in the below, and the closure fastener blocks the lower door, and the control room can carry out the frequency of opening and shutting higher, can touch rotatory handle carelessly and open the high-pressure chamber, brings the potential safety hazard.

The locking device arranged by the scheme utilizes the control in the horizontal direction and the vertical direction to lock, so that the safety is improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ground connection closure safety arrangement for looped netowrk cabinet to improve locking device's security.

The basic scheme is as follows: a ground connection closure safety arrangement for looped netowrk cabinet: the locking device comprises a transverse locking rod and a vertical locking column, wherein the transverse locking rod is axially arranged, and the vertical locking column is vertically arranged; the vertical lock column is supported by the supporting seat and can vertically move on the supporting seat to extend into the lower chamber door; the vertical lock post is provided with a through hole, and the transverse lock rod is inserted into the through hole to fix the vertical lock post.

Has the beneficial effects that: the locking can be carried out in the vertical direction and the horizontal direction, and the safety is improved.

The first preferred scheme is as follows: as a further optimization of the basic scheme, the transverse locking rod is sleeved through a sleeve, the transverse locking rod slides transversely in the sleeve, and the transverse locking rod penetrates through the sleeve and is inserted into the vertical locking column. The sleeve may constrain the sliding path of the transverse locking bar.

The preferred scheme II comprises the following steps: as a further optimization of the first preferred solution, the transverse locking cylinder is connected with the sleeve through a spring, the transverse locking cylinder passes through the spring, and the spring is reset to enable the transverse locking rod to be inserted into the vertical locking cylinder. The connection of the spring facilitates the automatic reset of the transverse locking rod.

The preferred scheme is three: as a further optimization of the second preferred embodiment, the transverse locking rod is provided with a curved handle. The transverse lock rod is convenient to pull leftwards.

The preferable scheme is four: as a further optimization of the third preferred scheme, the supporting seat is in a Z shape and is fixed on the bottom plate of the upper chamber. The Z-shaped supporting seat can reserve a moving space for the transverse locking rod.

The preferred scheme is five: as a further optimization of the fourth preferred scheme, an integrally formed lock cylinder cap is arranged at the top end of the vertical lock cylinder. The setting of lock post cap can carry on spacingly to perpendicular lock post, makes things convenient for perpendicular lock post to upwards stimulate simultaneously.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a front view of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the locking device comprises a transverse locking rod 10, a handle 101, a spring 11, a sleeve 12, a sleeve bolt 13, a vertical locking column 20, a through hole 201, a locking column cap 202, a supporting seat 21, a fixing bolt 22, a lower chamber door 30 and an upper chamber bottom plate 31.

Embodiments are substantially as shown in figures 1-2 of the accompanying drawings: the lock comprises a transverse lock rod 10 and a vertical lock column 20, wherein the transverse lock rod 10 is horizontally arranged, and the vertical lock column 20 is vertically arranged; the vertical lock column 20 is supported by the support base 21, and the vertical lock column 20 can vertically move on the support base 21 and extend into the lower chamber door 30 (an upward blind hole is arranged at the position corresponding to the top end of the lower chamber door 30); the vertical lock cylinder 20 is provided with a through hole 201, and the transverse locking bar 10 is inserted into the through hole 201 to fix the vertical lock cylinder 20.

The cross locking bar 10 is path-constrained by a sleeve 12, and the sleeve 12 is fixed to the upper chamber floor 31 by a sleeve bolt 13. The left end of the transverse locking rod 10 is provided with an integrally formed bent handle 101, the transverse locking rod 10 penetrates through a sleeve 12, the transverse locking rod 10 penetrates through a spring 11 and is in sliding connection with the sleeve 12, the left end of the spring 11 is fixed on the left side of the sleeve 12, the right end of the spring 11 is fixed on the right side (not the right side end) of the transverse locking rod 10, the handle 101 is pulled leftwards, the transverse locking rod 10 is separated from the vertical locking column 20, and the handle 101 is released, and the spring 11 returns to enable the transverse handle 101 to be inserted into a through hole 201 in the vertical locking column 20.

Perpendicular lock post 20 supports through supporting seat 21, and perpendicular lock post 20 is the rectangle column, and the top sets up the hole that enables perpendicular lock post 20 to pass on supporting seat 21 for perpendicular lock post 20 can not rotate on supporting seat 21 again, guarantees that through-hole 201 is coaxial with horizontal locking lever 10, conveniently passes. The vertical lock cylinder 20 is provided with an integrally formed lock cylinder cap 202, the vertical lock cylinder 20 is inserted into the support base 21 without being fixed, so that the vertical lock cylinder 20 can vertically slide on the support base 21, the lock cylinder cap 202 is used for limiting the vertical lock cylinder 20, and when the lock cylinder cap 202 contacts the support base 21, the through hole 201 is coaxial with the transverse lock rod 10, so that the insertion is convenient; the bottom end of the vertical lock column 20 is provided with a steel ball spring, the steel ball spring cannot completely extend and retract into the vertical lock column 20, and even if the steel ball spring is completely extended and retracted, the steel ball spring is partially exposed, the hole openings of the upper chamber door bottom plate 31 and the lower chamber door 30 are slightly larger than the cross section of the vertical lock column, and the steel ball spring is partially extended and retracted when being inserted into and pulled out of the upper chamber door bottom plate 31 and the lower chamber door 30 and can be pulled out; the diameter of the hole on the supporting seat 21 can just enable the vertical lock column to be inserted, when the vertical lock column 20 is pulled out upwards, the steel ball spring clamps the supporting seat and cannot be pulled out, so that the vertical lock column 20 cannot be separated from the supporting seat 21 integrally, and the loss of the vertical lock column is avoided. The supporting seat 21 is made of hard steel and is arranged in a Z shape, the bottom end of the Z shape is fixed on the upper chamber bottom plate 31 through a fixing bolt 22, and the top plate of the Z shape does not need to be supported on the left side and leaves a space for the transverse locking rod 10.

The specific implementation process is as follows:

unlocking: the horizontal locking rod 10 is pulled leftwards to remove the vertical locking column 20, the vertical locking column 20 is pulled upwards (without being pulled out integrally) to be removed from the lower chamber door 30, at the moment, the horizontal locking rod 10 is loosened, the horizontal locking rod 10 is reset to the lower part of the vertical locking column 20, the bottom end of the vertical locking column 20 falls to abut against the horizontal locking rod 10, the lower chamber door 30 is opened, the left side of the lower chamber door 30 is provided with a shaft, and the lower chamber door 30 is rotated and opened from the right side.

Locking: the lower door 30 is closed, the transverse locking bar 10 is pulled leftward, the vertical locking post 20 is freely dropped and inserted into the lower door 30, and the transverse locking bar 10 is released, which is automatically inserted into the vertical locking post 20.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A ground connection closure safety arrangement for looped netowrk cabinet, its characterized in that: the locking device comprises a transverse locking rod and a vertical locking column, wherein the transverse locking rod is axially arranged, and the vertical locking column is vertically arranged; the vertical lock column is supported by the supporting seat and can vertically move on the supporting seat to extend into the lower chamber door; the vertical lock post is provided with a through hole, and the transverse lock rod is inserted into the through hole to fix the vertical lock post.

2. The ground-locking safety protection device for ring main units according to claim 1, wherein: the transverse locking rod is sleeved through the sleeve, the transverse locking rod slides transversely in the sleeve, and the transverse locking rod penetrates through the sleeve and is inserted into the vertical locking column.

3. The ground locking safety protection device for the ring main unit as claimed in claim 2, wherein: the transverse lock cylinder is connected with the sleeve through a spring, the transverse lock cylinder penetrates through the spring, and the spring is reset to enable the transverse lock rod to be inserted into the vertical lock cylinder.

4. The ground-locking safety protection device for ring main units according to claim 2, wherein: the transverse locking rod is provided with a bending handle.

5. The ground-locking safety protection device for ring main units according to claim 3, wherein: the supporting seat is Z-shaped and is fixed on the upper chamber bottom plate.

6. The ground-locking safety protection device for ring main units according to claim 5, wherein: and the top end of the vertical lock cylinder is provided with an integrally formed lock cylinder cap.