CN210690720U

CN210690720U - Fault indicator housing assembly

Info

Publication number: CN210690720U
Application number: CN201921191383.XU
Authority: CN
Inventors: 阳武; 黄雄凯; 张国
Original assignee: Changsha Hengdian Juneng Electronic Technology Co ltd
Current assignee: Changsha Hengdian Juneng Electronic Technology Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-06-05
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses a fault indicator shell assembly, including casing, end face seal circle and bottom, be equipped with the L shape recess portion of containing that corresponds the arrangement with protruding spacing portion on the bottom inner wall, L shape recess portion of containing comprises leading-in portion, locking portion and the latch portion that are connected, the bottom suit is in the casing bottom, the bottom top surface passes through end face seal circle and casing outer wall sealing connection, press and rotatory casing, end face seal circle pressurized deformation, protruding spacing portion gets into the latch portion through leading-in portion and locking portion; and loosening the shell, rebounding the end face sealing ring, pushing the shell to move upwards, and abutting the protruding limiting part on the anti-loosening part to realize limiting. The bottom cover is arranged at the bottom of the shell in a buckle connection mode, the bottom cover and the shell can be connected in a screwed mode only by rotating a certain angle, and the bottom cover can be freely separated or assembled; through setting up a locking portion, utilize the resilience ability after the sealing washer of terminal surface is compressed, make protruding spacing portion support on locking portion, and can't freely unscrew the latch portion.

Description

Fault indicator housing assembly

Technical Field

The utility model relates to a power transmission and distribution lines on-line monitoring equipment especially relates to a fault indicator shell subassembly.

Background

As main physical equipment in the power transmission link of a power grid, a power transmission line is the most huge component of a power system, the power transmission line has severe operating environment, complex terrain and difficult maintenance, and has important influence on the safety and reliability of the power system. Therefore, in a ring network distribution system, especially a system using a large number of ring network load switches, if a short-circuit fault or a ground fault occurs in a next-stage distribution network system, a power supply system of a previous stage must be disconnected within a specified time to prevent a major accident from occurring.

The short-circuit and ground fault indicator is a device for detecting a short-circuit and ground fault, and by using the device, a portion where a fault occurs can be identified. The maintenance personnel can quickly find the fault section according to the alarm signal of the indicator and break the fault section, so that the power supply of the fault-free section is recovered in time, a large amount of working time can be saved, and the power failure time and the power failure range can be reduced.

Because fault indicators are mostly hung on outdoor overhead high-voltage lines, the requirements on the sealing performance of the fault indicators are high for protecting internal working devices due to the resistance to erosion of rain and snow. The conventional fault indicator generally comprises a housing assembly and a functional assembly hermetically installed in the housing assembly, wherein the housing assembly comprises a housing and a bottom cover hermetically connected to the bottom of the housing, and the housing and the bottom cover are hermetically connected in a pouring sealant or threaded connection mode. After long-term practice, we have found that the above described connection of the fault indicator housing has the following disadvantages:

the shell and the bottom cover which are connected by the pouring sealant can be decomposed and removed only through violence, the possibility of independent maintenance is not available, only complete replacement is available, and the maintenance cost is high; and because the casing is connected with the undetachable of bottom, lead to fault indicator's test terminal to adopt alone external form, possess certain risk of leaking.

Secondly, by adopting a threaded connection mode, the problems of independent maintenance and replacement of the shell and the bottom cover and internal test of the terminal can be solved, but in consideration of sealing performance, a plurality of circles of threads are required to be arranged, and the requirement on processing precision is higher; and because the thickness of casing and bottom is limited, the screw tooth height is less, when high low temperature circulates, because internal pressure changes, easily leads to the screw tooth pine to take off.

In view of the above, it would be desirable to provide a new fault indicator housing assembly that overcomes the above-mentioned deficiencies in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, provide a dismantle convenient and sealed effectual fault indicator shell subassembly.

The utility model provides a fault indicator shell subassembly, including casing, end face seal circle and bottom, the end face seal circle suit is on the casing, be equipped with the L shape recess portion of acceping that arranges with protruding spacing portion correspondence on the bottom inner wall, this L shape recess portion of acceping comprises leading-in portion, locking portion and the latch portion that are connected, the bottom suit is in the casing bottom, the bottom top surface passes through end face seal circle and casing outer wall sealing connection, press and rotatory casing, the end face seal circle is pressed and is out of shape, protruding spacing portion gets into the latch portion through leading-in portion and locking portion; and loosening the shell, rebounding the end face sealing ring, pushing the shell to move upwards, and abutting the protruding limiting part on the anti-loosening part to realize limiting.

In order to further ensure the sealing performance between the shell and the bottom cover, an annular groove is arranged on the outer wall of the shell below the raised limiting part, and a lateral sealing ring for sealing and connecting the outer side wall of the shell and the inner side wall of the bottom cover is arranged in the annular groove.

The lateral sealing ring is an O-shaped sealing ring.

In order to facilitate the screwing-out of the convex limiting part and prevent the locking, the top of the convex limiting part at the joint of the convex limiting part and the anti-loosening part is inverted with a round angle.

The bottom cover is arranged at the bottom of the shell in a buckle connection mode, the bottom cover and the shell can be connected in a screwed mode only by rotating a certain angle, the bottom cover and the shell can be freely separated or assembled, and the repair is convenient; the anti-loosening part is arranged in the L-shaped groove accommodating part, and the resilience of the pressed end face seal ring is utilized to enable the protrusion limiting part to abut against the anti-loosening part, so that the locking part cannot be screwed out freely, and the bottom cover cannot be loosened, thereby ensuring the sealing effect.

Drawings

Fig. 1 is a schematic view of the partial cross-sectional structure of the present invention.

Fig. 2 is a schematic diagram of the exploded structure of fig. 1.

The labels shown in the figures and the corresponding component names are:

1. a housing; 2. an end face seal ring; 3. a bottom cover; 4. a lateral sealing ring; 11. a boss limiting part; 12. an annular groove; 13. a large end section; 14. (ii) a A small end segment; 31. an L-shaped groove accommodating part; 111. round corners; 311. an introduction section; 312. a locking part; 313. a latch portion.

Detailed Description

As can be seen from fig. 1 and 2, the fault indicator housing assembly of the present invention comprises a housing 1, an end seal 2 and a bottom cover 3, a lateral seal 4,

the shell 1 consists of a large end section 13 positioned at the upper part and a small end section 14 positioned at the lower part, four convex limiting parts 11 are uniformly distributed on the outer wall of the small end section 14 along the circumference,

the end face seal ring 2 is sleeved on the small end section 14 above the raised limiting part 11, the top face of the end face seal ring 2 is closely attached to the bottom face of the large end section 13, the bottom face of the end face seal ring 2 and the top face of the raised limiting part 11 are arranged at intervals,

four L-shaped groove accommodating parts 31 are annularly and uniformly distributed on the inner wall of the bottom cover 3 along the circumference of the bottom cover, and the L-shaped groove accommodating parts 31 and the protrusion limiting parts 11 are arranged in a one-to-one correspondence manner; each L-shaped groove receiving portion 31 is composed of a leading-in portion 311, a locking portion 312 and a locking portion 313 which are connected, the leading-in portion 311 extends from a port of the bottom cover 3 towards the inside of the bottom cover 3 along the axial direction of the bottom cover 3, the locking portion 312 is connected with the bottom of the leading-in portion 311 in a closing shape and extends along the circumferential direction of the bottom cover 3, the locking portion 313 is horizontally connected with the locking portion 312 and extends along the circumferential direction of the bottom cover 3, the height of the locking portion 313 is larger than that of a small port end of the locking portion 312, the bottom cover 3 is sleeved on the small end portion 14 of the shell 1, the top surface of the bottom cover 3 is connected with the outer wall of the shell 1 in a sealing mode through the end face seal ring 2, and the protrusion limiting portion 11 enters the locking portion 313 through the leading-.

As can be seen from fig. 1 and fig. 2, the outer wall of the small end section 14 below the protruding limiting portion 11 of the present invention is provided with an annular groove 12, a lateral sealing ring 4 is sleeved in the annular groove 12, and the lateral sealing ring 4 is an O-shaped sealing ring and is tightly connected with the annular groove 12 through interference fit. Because the bottom cover 3 and the shell 1 in the prior industry basically only adopt the end face seal ring 2 to carry out single sealing, the compression deformation is influenced by the screwing of the screw teeth, the operation inconsistency leads to water leakage, and after the lateral seal ring 4 is additionally arranged, the consistency is good because the lateral compression ratio is limited by the size of a die, and the water leakage can be further prevented.

As can be seen from fig. 1 and 2, the top of the bump stopper 11 at the junction with the anti-loosening portion 312 is chamfered with a fillet 111 for the bump stopper 11 to pass over the anti-loosening portion 312.

The utility model discloses an assembly process as follows:

1. sleeving the end face sealing ring 2 on the small end section 14 above the boss limiting part 11, and placing the lateral sealing ring 4 in the annular groove 12;

2. inserting the housing 1 into the bottom cover 3 with the projection-limiting portion 11 aligned with the lead-in portion 311 of the L-shaped groove-receiving portion 31;

3. the shell 1 is pressed with force, the end face sealing ring 2 is pressed and deformed under the opposite movement of the shell 1 and the bottom cover 3, the bottom cover 3 is rotated clockwise, and the protrusion limiting part 11 passes over the anti-loosening part 312 and completely reaches the end point position of the locking part 313;

4. when the shell 1 is loosened, the end face seal ring 2 rebounds naturally for a certain amount, the shell 1 is pushed to move upwards under the condition that the bottom cover 3 is tightly matched with the shell 1, and the locking part 312 abuts against the rear edge of the protruding limiting part 11, so that the bottom cover 3 cannot retreat in the using process.

The utility model discloses a dismantlement process as follows:

1. the bottom cover 3 and the shell 1 are pressed by force, the bottom cover 3 is rotated anticlockwise, the convex limiting part 11 passes through the anti-loosening part 312 from the end position of the clamping lock part 313, and enters the lead-in part 311;

2. the housing 1 is taken out upward.

The utility model discloses in, can assist on each sealing washer and use waterproof grease, more make things convenient for the rotation between casing 1 and the bottom 3 to and the water-proof effects of sealing washer.

Claims

1. The utility model provides a fault indicator shell subassembly, includes casing (1), end face seal (2) and bottom (3), and the end face seal suit is on the casing, its characterized in that: the outer wall of the shell is at least provided with two protruding limiting parts (11) along the circumference, the inner wall of the bottom cover is provided with an L-shaped groove accommodating part (31) which is arranged corresponding to the protruding limiting parts, the L-shaped groove accommodating part consists of a leading-in part (311), a locking part (312) and a locking part (313) which are connected, the bottom cover is sleeved at the bottom of the shell, the top surface of the bottom cover is hermetically connected with the outer wall of the shell through an end face seal ring, the shell is pressed and rotated, the end face seal ring is deformed under pressure, and the protruding limiting parts enter the locking part through the leading-; and loosening the shell, rebounding the end face sealing ring, pushing the shell to move upwards, and abutting the protruding limiting part on the anti-loosening part to realize limiting.

2. The fault indicator housing assembly of claim 1, wherein: an annular groove (12) is arranged on the outer wall of the shell below the raised limiting part, and a lateral sealing ring (4) for hermetically connecting the outer side wall of the shell and the inner side wall of the bottom cover is arranged in the annular groove.

3. The fault indicator housing assembly of claim 2, wherein: the lateral sealing ring is an O-shaped sealing ring.

4. The fault indicator housing assembly of claim 1, wherein: the top of the convex limiting part connected with the anti-loosening part is inverted with a round angle.