阅读说明：本技术 高压电缆终端防爆器 (Explosion-proof device for high-voltage cable terminal ) 是由 王红州 于 2019-10-31 设计创作，主要内容包括：本发明高压电缆终端防爆器公开了一种通过间距可调的上固定套和下固定套对防爆器的整体长度进行调节,并配合小型干粉灭火球对火焰进行有效抑制的高压电缆终端防爆器,其特征在于多个外撑杆的一端垂直置于下固定套上,多个所述外撑杆等角度分布,所述外撑杆的另一端竖直向上延伸,多个外防护筋等角度螺旋缠绕置于外撑杆上,所述外防护筋的一端和下固定套相连接,多个内撑杆的一端垂直置于下固定套上,多个所述内撑杆等角度分布,所述内撑杆位于多个支撑杆围绕形成的圆内,所述内撑杆的另一端竖直向上延伸,多个内防护筋螺旋缠绕置于内撑杆上,且内防护筋位于外撑杆和内撑杆之间,所述内防护筋的一端和下固定套相连接,多个放置套固定置于内撑杆上。(The invention discloses a high-voltage cable terminal explosion-proof device which adjusts the whole length of the explosion-proof device through an upper fixed sleeve and a lower fixed sleeve with adjustable space and effectively inhibits flame by matching with a small dry powder fire extinguishing ball, and is characterized in that one end of a plurality of outer support rods is vertically arranged on the lower fixed sleeve, the plurality of outer support rods are distributed at equal angles, the other end of the outer support rods vertically extends upwards, a plurality of outer protective ribs are spirally wound on the outer support rods at equal angles, one end of each outer protective rib is connected with the lower fixed sleeve, one end of a plurality of inner support rods is vertically arranged on the lower fixed sleeve, a plurality of inner support rods are distributed at equal angles, the inner support rods are positioned in a circle formed by the plurality of support rods in a surrounding mode, the other end of each inner support rod vertically extends upwards, a plurality of inner protective ribs are spirally wound on the inner support rods, and the inner protective ribs are positioned between the outer support rods and the inner support rods, one end of the inner protection rib is connected with the lower fixing sleeve, and the plurality of placing sleeves are fixedly arranged on the inner support rod.)

1. The utility model provides a high tension cable terminal explosion-proof equipment which characterized by: one end of a plurality of outer support rods is vertically arranged on the lower fixing sleeve, the outer support rods are distributed at equal angles, the other end of each outer support rod vertically extends upwards, a plurality of outer protection ribs are spirally wound on the outer support rods at equal angles, one end of each outer protection rib is connected with the lower fixing sleeve, one end of each inner support rod is vertically arranged on the lower fixing sleeve, a plurality of inner support rods are distributed at equal angles, the inner support rods are positioned in a circle formed by the support rods in a surrounding manner, the other end of each inner support rod vertically extends upwards, a plurality of inner protection ribs are spirally wound on the inner support rods, the inner protection ribs are positioned between the outer support rods and the inner support rods, one ends of the inner protection ribs are connected with the lower fixing sleeve, a plurality of placing sleeves are fixedly arranged on the inner support rods and distributed at equal intervals, a plurality of small dry powder fire extinguishing balls are clamped in the placing sleeves in a one-to-one correspondence manner, the upper fixing sleeve is positioned above the lower, a set of smooth inserted block comprises two smooth inserted blocks, the rotatable cover of outer change ring is arranged in and is sheathe in, it has two to slide the slot to open on the outer change ring inner wall, the rotatable cover of inner change ring is arranged in on the fixed cover, and be located the bottom of outer change ring, it has two to slide the slot to open on the inner change ring inner wall, two sets of smooth inserted blocks insert respectively and arrange in the outer change ring and the interior slip slot on the inner change ring inner wall in, outer change ring bottom is connected with the other end of a plurality of outer protection muscle, inner change ring bottom is connected with the other end of a plurality of inner protection muscle, the spiro union has a plurality of set screws that the angle distributes equally on the outer change ring, the spiro union has a plurality of set screws that the angle distributes equally on the inner change ring.

2. The explosion-proof device for the high-voltage cable terminal as claimed in claim 1, wherein the inner supporting rod is provided with a telescopic inner telescopic rod, and the outer supporting rod is provided with a telescopic outer telescopic rod, so that when in use, the explosion-proof device can be flexibly adapted according to the distance between the upper fixing sleeve and the lower fixing sleeve, thereby facilitating the support of the outer protective rib and the inner protective rib.

3. The explosion vent for a high voltage cable terminal as recited in claim 1, wherein the outer rotary ring and the inner rotary ring are rotated in opposite directions, such that the outer protective ribs and the inner protective ribs are spirally wound in opposite directions and are interlaced to form a mesh structure to wrap the cable terminal;

the protection network blocks explosion fragments, and small-size dry powder fire extinguishing ball receives the thermal explosion, when protecting cable terminal, and the cooperation dry powder is put out a fire, suppresses the condition of a fire.

4. The explosion protection device for a high-voltage cable terminal as claimed in claim 1, wherein the outer protective rib is made of an elastic bendable material, and the inner protective rib is made of an elastic bendable material, so as to form a spiral structure and facilitate length adjustment of the explosion protection device.

5. The explosion vent for a high-voltage cable terminal as recited in claim 3, wherein the length of said outer protective rib is greater than the length of said inner protective rib, and the length of said outer stay and said inner stay are less than the length of said inner protective rib.

6. The explosion-proof device for the high-voltage cable terminal according to claim 1, wherein the placing sleeve is an elastic opening sleeve, and fire extinguishing balls with different sizes can be placed in the placing sleeve, so that the placing sleeve can be deformed and opened to a certain extent according to the diameter of the fire extinguishing balls and is convenient to place.

7. A high voltage cable termination explosion vent according to claim 5, wherein the wall of the split sleeve has embedded teeth.

8. A high voltage cable termination explosion vent according to claim 1 or 2, wherein the outer diameter of the outer swivel is greater than the outer diameter of the inner swivel.

9. The explosion vent for a high voltage cable terminal as recited in claim 1, wherein said upper retaining sleeve has a non-slip mat disposed on an inner wall thereof, said lower retaining sleeve has a non-slip mat disposed on an inner wall thereof, and said upper retaining sleeve has an outer diameter smaller than that of said lower retaining sleeve.

10. The explosion vent for a high voltage cable terminal as recited in claim 9, wherein the inner diameter of said upper retainer is equal to the inner diameter of said lower retainer, and the outer diameter of said outer swivel is equal to the outer diameter of said lower retainer.

Technical Field

The invention discloses an explosion-proof device for a high-voltage cable terminal, relates to an explosion-proof device for protecting the high-voltage cable terminal from explosion, and belongs to the field of power equipment. In particular to a high-voltage cable terminal explosion-proof device which adjusts the whole length of the explosion-proof device through an upper fixed sleeve and a lower fixed sleeve with adjustable intervals and effectively inhibits flame by matching with a small dry powder fire extinguishing ball.

Background

Porcelain shell formula cable terminal is because its self-cleaning performance is good, ageing resistance can be strong by the wide application on high tension cable terminal, but its electric porcelain bushing of porcelain shell formula cable terminal is breakable material, when cable terminal breaks down and produces the explosion, it can produce a large amount of explosion fragments, these fragment that fly out are easy to cable on every side, equipment or even personnel cause serious injury, influence electric power system's normal operating, current cable terminal explosion-proof equipment generally through set up the round in terminal outside department and block the structure and carry out the blockking to the explosion fragment, but block structure overall length and fixed structure, can't carry out effective regulation according to the actual protection length at terminal, produce the back of catching a fire in the explosion simultaneously, can't carry out effectual suppression or put out a fire to flame.

The publication number CN208112198U discloses an explosion-proof device for a high-voltage cable terminal, which comprises a top seat and a base, wherein the cross sections of the top seat and the base are circular, a plurality of upper installation parts distributed in a circular array are arranged on the circumferential edge of the lower end surface of the top seat, lower installation parts corresponding to the upper installation parts are correspondingly arranged on the circumferential edge of the upper end surface of the base, a first through hole for the high-voltage cable terminal to pass through in a matching way is arranged in the middle of the base, and a fixing groove for matching and connecting the head of the high-voltage cable terminal is arranged in the middle of the top; the number of the insulating rods is the same as that of the upper mounting pieces, the top end of each insulating rod is connected with the upper mounting piece, and the bottom end of each insulating rod is connected with the lower mounting piece, so that the plurality of insulating rods are matched to surround the high-voltage cable terminal; the insulating rod includes the insulating rod body, is provided with along the axial multiunit full skirt of arranging side by side around the insulating rod body lateral wall, the full skirt along radial outside salient in insulating rod body lateral wall, the device protection length is fixed can't carry out convenient regulation according to the installation actual demand, can't carry out timely effectual processing to the fire that the explosion produced simultaneously.

Disclosure of Invention

In order to improve the situation, the invention provides the high-voltage cable terminal explosion-proof device which adjusts the whole length of the explosion-proof device through the upper fixing sleeve and the lower fixing sleeve with adjustable intervals and effectively inhibits flame by matching with a small dry powder fire extinguishing ball.

The invention relates to a high-voltage cable terminal explosion-proof device, which is realized by the following steps: the invention relates to a high-voltage cable terminal explosion-proof device which comprises an outer rotating ring, an upper fixing sleeve, an outer protective rib, an outer support rod, a lower fixing sleeve, an inner support rod, an inner protective rib, a top tightening screw, a small dry powder fire extinguishing ball, an inner rotating ring, a sliding slot and a placing sleeve, wherein one end of a plurality of outer support rods is vertically arranged on the lower fixing sleeve, the plurality of outer support rods are distributed at equal angles, the other end of the outer support rods vertically extends upwards, the plurality of outer protective ribs are spirally wound on the outer support rods at equal angles, one end of each outer protective rib is connected with the lower fixing sleeve, one end of each inner support rod is vertically arranged on the lower fixing sleeve, the plurality of inner support rods are distributed at equal angles, the inner support rods are positioned in a circle formed by the plurality of support rods in a surrounding mode, the other end of each inner support rod vertically extends upwards, the plurality of inner protective ribs are spirally wound on the inner support rods, and the inner protective ribs are, one end of the inner protective rib is connected with the lower fixing sleeve, a plurality of placing sleeves are fixedly arranged on the inner supporting rod and are distributed at equal intervals, a plurality of small dry powder fire extinguishing balls are correspondingly clamped in the placing sleeves one by one, the outer protective rib is made of elastic bendable material, the inner protective rib is made of elastic bendable material, the upper fixing sleeve is positioned above the lower fixing sleeve, two groups of sliding insertion blocks are arranged on the outer wall of the upper fixing sleeve, one group of sliding insertion blocks consists of two sliding insertion blocks, the outer rotating ring is rotatably sleeved on the upper fixing sleeve, two sliding insertion slots are formed in the inner wall of the outer rotating ring, the inner rotating ring is rotatably sleeved on the fixing sleeve and is positioned at the bottom of the outer rotating ring, two groups of sliding insertion blocks are respectively inserted in the sliding insertion slots in the inner wall of the outer rotating ring and the inner rotating ring, and the outer diameter of the outer rotating ring is larger than that of the inner rotating ring, the outer rotating ring bottom is connected with the other ends of the outer protective ribs, and the inner rotating ring bottom is connected with the other ends of the inner protective ribs. A plurality of jacking screws distributed at equal angles are screwed on the outer rotating ring, a plurality of jacking screws distributed at equal angles are screwed on the inner rotating ring, the outer diameter of the upper fixing sleeve is smaller than that of the lower fixing sleeve, the inner diameter of the upper fixing sleeve is equal to that of the lower fixing sleeve, the outer diameter of the outer rotating ring is equal to that of the lower fixing sleeve, the length of the outer protection rib is greater than that of the inner protection rib, the lengths of the outer supporting rod and the inner supporting rod are smaller than that of the inner protection rib, an anti-slip pad is arranged on the inner wall of the upper fixing sleeve, an anti-slip pad is arranged on the inner wall of the lower fixing sleeve, the placing sleeve is an elastic opening sleeve, and embedded teeth are arranged on the wall of the opening sleeve;

furthermore, a telescopic inner telescopic rod is arranged on the inner supporting rod, and a telescopic outer telescopic rod is arranged on the outer supporting rod.

Has the beneficial effects.

The explosion-proof wrapping range can be flexibly adjusted according to the length of the cable terminal, and the cable terminal is convenient for personnel to use.

And secondly, the small dry powder fire extinguishing ball can extinguish the fire generated by explosion in time, so that the loss is reduced.

And thirdly, the mesh density formed by the inner and outer protective ribs can be flexibly adjusted, and different use requirements can be met.

Fourthly, the use and the operation are simple and convenient, and the threat degree of explosion to surrounding personnel and equipment is reduced.

Drawings

FIG. 1 is a perspective view of the explosion-proof device for a high-voltage cable terminal according to the present invention;

FIG. 2 is a schematic structural diagram of the explosion-proof device for the high-voltage cable terminal of the invention;

FIG. 3 is a schematic structural view of a fixing sleeve on the explosion-proof device of the high-voltage cable terminal of the invention;

FIG. 4 is a perspective view of the lower fixing sleeve of the explosion-proof device for the high-voltage cable terminal of the present invention;

FIG. 5 is a perspective view of the explosion-proof unit of the high-voltage cable terminal according to the present invention when not in use;

fig. 6 is a schematic structural view of an explosion-proof device of a high-voltage cable terminal of embodiment 2 of the invention.

In the attached drawings

Wherein the method comprises the following steps: the fire extinguishing device comprises an outer rotating ring (1), an upper fixing sleeve (2), an outer protection rib (3), an outer support rod (4), a lower fixing sleeve (5), an inner support rod (6), an inner protection rib (7), a set screw (8), a small dry powder fire extinguishing ball (9), an inner rotating ring (10), a sliding slot (11), an inner telescopic rod (12), a placing sleeve (13) and an outer telescopic rod (14).

The specific implementation mode is as follows: