CN210136727U

CN210136727U - Conductive particle suppression device

Info

Publication number: CN210136727U
Application number: CN201920858808.1U
Authority: CN
Inventors: 李鸿儒; 宋邦申; 汤鑫
Original assignee: Weilong Zhenjiang Academy Of Mechanical And Electrical Sciences Co ltd
Current assignee: Weilong Zhenjiang Academy Of Mechanical And Electrical Sciences Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-03-10
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a conductive particle suppression device. It carries out the cylindric sleeve of suit including having the three post insulators of through-flow conductor in the center, is provided with three fixed orifices along circumferencial direction evenly distributed on the sleeve, and the fixed orifices can cooperate with three stabilizer blade of three post insulators, and the sleeve is installed outward the ground connection shell and forms the low potential region between the two, three post insulators fixed mounting are in the sleeve and through wearing out the electrically conductive contact between electrically conductive contact and the ground connection shell of fixed orifices. The advantages are that: after the conductive particles move to the low potential area, the conductive particles can be firmly adsorbed and cannot fly out again due to the fact that the electric field intensity is very low, the problem that the conductive particles can move randomly in the insulating air chamber under the action of the electric field is thoroughly solved, the insulating level inside the insulating air chamber is guaranteed, and the electric-field-free electric-field-type air-conditioning device is simple in structure, convenient to install and very high in use reliability.

Description

Conductive particle suppression device

Technical Field

The utility model relates to a conductive particle suppression device for rigidity gas insulation transmission line belongs to high tension transmission technical field.

Background

A rigid gas insulated transmission line (GIL) is a novel power transmission mode between an overhead line and a cable, and mainly comprises a through-flow conductor and a grounding metal shell which are concentrically arranged, wherein the through-flow conductor is fixed in the center of the grounding shell through a three-pillar insulator. In recent years, in the large background of the construction of national strong power grids and smart power grids, the GIL power transmission mode has been rapidly developed, and three-post insulators for supporting through-current conductors have been widely used therein. Contact friction of the GIL in the assembling process or the running process inevitably generates a small amount of conductive particles, the conductive particles can move randomly in the insulating air chamber under the action of an electric field, and when the conductive particles are attached to the surface of the three-pillar insulator, the insulation level in the insulating air chamber can be greatly reduced.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a conductive particle suppression device that structural design is simple, simple to operate, insulating effectual.

In order to solve the technical problem, the utility model discloses a conductive particle suppression device, including can having the three post insulators of through-flow conductor at the center and carry out the cylindric sleeve of suit, be provided with three fixed orifices along circumferencial direction evenly distributed on the sleeve, the fixed orifices can cooperate with three post insulators's three stabilizer blade, and the sleeve is installed outward the ground connection shell and forms the low potential region between the two, three post insulators fixed mounting are in the sleeve and through wearing out conductive contact between the conductive contact piece of fixed orifices and the ground connection shell.

The bottom of the sleeve is uniformly provided with grooves capable of guiding conductive particles to enter a low potential area.

The conductive contact element is a mandril with a return spring and arranged in an inner cavity of the insert, and the mandril can be in electrical contact with the grounding shell under the action of the return spring.

The three-post insulator fixing device is characterized in that a fixing cover and a supporting block which are used for being installed in a matched mode with the insert are arranged outside the sleeve, the supporting block can be supported between a fixing hole in the lower portion of the sleeve and the grounding shell and is matched with the insert to fix and install the three-post insulator in the sleeve, and the fixing cover can be pressed at the fixing hole in the upper end face of the sleeve and is matched with the insert to fix and install the three-post insulator in the sleeve.

The sleeve is a metal thin-wall cylinder.

The metal thin-wall cylinder is made of aluminum or aluminum alloy materials.

The circumference surface of sleeve is provided with the mounting plane, the fixed orifices is seted up on the mounting plane.

The utility model has the advantages that:

through set up between three post insulators and ground connection shell can with three post insulators complex sleeve as inhibiting the structure and make it form a low potential district with ground connection metal casing after the installation, after electrically conductive particle removed the low potential district, because electric field strength is very low, electrically conductive particle can be firmly adsorbed, can not fly out again, the problem that electrically conductive particle can move wantonly in insulating air chamber under the effect of electric field has thoroughly been solved from this, thereby the inside insulating level of insulating air chamber has been guaranteed, the steam generator is simple in structure, the steam generator is convenient to install, the reliability in utilization is very high.

Drawings

Fig. 1 is a schematic front view of the conductive particle suppressing device of the present invention;

fig. 2 is a schematic side view of the conductive particle suppressing device of the present invention;

fig. 3 is a schematic structural view of the conductive particle suppressing device according to the present invention in a use state;

fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Detailed Description

The conductive particle suppression device of the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.

As shown in the figures, the utility model discloses a conductive particle suppression device, including can have the cylindric sleeve 2 of three post insulators 3 suit of through-flow conductor in the center, preferably, sleeve 2 is the metal thin wall drum that adopts materials such as aluminium or aluminum alloy to make, as can be seen from the figure, sleeve 2 is laid horizontally, be provided with three along the circumferencial direction evenly distributed on sleeve 2 be used for with three post insulator complex fixed orifices 201, specifically speaking sleeve 2's circumferential surface is provided with the mounting plane, fixed orifices 201 sets up on the mounting plane, one of them fixed orifices is located sleeve 2's up end department and the central line of fixed orifices is located telescopic perpendicular central line, two other fixed orifices are along sleeve 2 circumferential surface partition setting, sleeve 2 installs ground connection shell 4 outward and make and form the low potential region between sleeve 2 and the ground connection shell 4, three insulator posts 3 fixed mounting are in the sleeve and through electrically conductive contact 6 and ground connection shell 4 between electrically conductive contact spare In contact with the conductive particles, the grooves 202 capable of guiding the conductive particles to enter the low potential region are uniformly arranged on the bottom surface of the sleeve 2, in the GIL assembling process or the operation process, more or less conductive particles are generated, and can fly in the GIL air chamber under the action of the electric field force, when the conductive particles fall into the grooves 202 uniformly arranged below the sleeve 2 under the action of the self gravity, the conductive particles fall into the low potential region 7, and the electric field strength in the low potential region 7 is very low because the grounding shell 4 always keeps the zero position, and the conductive particles can be firmly adsorbed into the low potential region 7 and can not move.

Through the structural design, the sleeve is fixed around the three-pillar insulator, a low potential area is formed by the sleeve and the grounding metal shell, and after the conductive particles move to the low potential area, the conductive particles can be firmly adsorbed and cannot escape again due to the fact that the electric field intensity is very low. In the field high-voltage test process, the voltage lower than the rated insulation level can be applied in sections to drive the conductive particles into the conductive particle inhibiting device, so that the reliable and normal operation of the GIL is ensured.

Furthermore, the head of each support leg 301 of the three-post insulator 3 is provided with an insert 302 corresponding to the position of the fixing hole, the conductive contact 6 is arranged in the inner cavity of the insert 302, the sleeve 2 is externally provided with a fixing cover 1 and a supporting block 5 which are used for being matched and installed with the inserts, wherein the fixed cover is used for being arranged at the fixed hole position of the upper end surface of the sleeve 2, the supporting block 5 is used for being arranged at two fixed hole positions of the circumferential surface of the lower part of the sleeve 2, the outer surfaces of the connecting ends of the fixed cover 1 and the supporting block 5 are both provided with external threads, the fixed cover 1 and the supporting block 5 can be arranged through the external threads and the insert, therefore, the supporting block 5 is supported between the sleeve 2 and the grounding shell 4 and is matched with the insert to locate and install the three-post insulator 3 in the sleeve, and the fixing cover 1 is pressed on the upper end surface of the sleeve 2 and is matched with the insert to locate and install the three-post insulator 3 in the sleeve.

In addition, as can be seen from fig. 4, the conductive contact element 6 is a push rod with a return spring, which is arranged in the inner cavity of the insert 302, specifically, the connecting end of the fixing cover 1 and the supporting block 5 has an inner hole, the push rod has a limiting end and a protruding end, the insert 302 is internally provided with the return spring, and the return spring is pressed on the lower end surface of the limiting end of the push rod so that the protruding end of the push rod extends out of the inner holes of the fixing cover 1 and the supporting block 5, so that the push rod can be electrically contacted with the grounding shell under the action.

During assembly, firstly, a cylindrical sleeve 2 is sleeved on the periphery of the three-post insulator 3, and three fixing holes 201 in the sleeve 2 are just matched with inserts 302 at the heads of feet 301 of the three-post insulator 3; then, a fixing cover 1 and two supporting blocks 5 are screwed into the insert 302 through self external threads, the ejector rod 6 with a return spring is placed in an inner cavity of the insert 302 before screwing, and the sleeve 2 and the three-post insulator 3 are effectively connected into a whole through the fixing cover 1 and the supporting blocks 5; the assembled integral support insulator is finally inserted into the interior of the earthed housing 4, the carrier rod 6 then remaining in good electrical contact with the earthed housing under the action of its own return spring, so that a low potential region 7 is formed between the sleeve 2 and the earthed housing 4.

Claims

1. A conductive particle suppression device, characterized by: including can having three post insulators (3) of through-flow conductor in the center to carry out cylindric sleeve (2) of suit, be provided with three fixed orifices (201) along circumferencial direction evenly distributed on sleeve (2), fixed orifices (201) can cooperate with three stabilizer blade (301) of three post insulators, sleeve (2) outer installation ground shell (4) and form the low potential region between the two, three post insulators (3) fixed mounting are in the sleeve and through wearing out conductive contact between conductive contact (6) and the ground shell (4) of fixed orifices.

2. The conductive particle suppression apparatus of claim 1, wherein: the bottom surface of the sleeve (2) is uniformly provided with grooves (202) capable of guiding conductive particles into a low potential area.

3. The conductive particle suppression device according to claim 1 or 2, wherein: the three-post insulator is characterized in that an insert (302) corresponding to the position of the fixing hole is arranged at the head of each supporting leg (301) of the three-post insulator (3), the conductive contact piece (6) is a mandril (8) which is arranged in an inner cavity of the insert (302) and is provided with a return spring (7), and the mandril (8) can be in electrical contact with the grounding shell under the action of the return spring.

4. The conductive particle suppression apparatus as recited in claim 3, wherein: the three-column insulator grounding structure is characterized in that a fixing cover (1) and a supporting block (5) which are used for being installed in an insert matching mode are arranged outside the sleeve (2), the supporting block (5) can be supported between a fixing hole of the lower portion of the sleeve (2) and the grounding shell (4) and is matched with the insert to install the three-column insulator (3) in the sleeve in a positioning mode, and the fixing cover (1) can be pressed at the fixing hole of the upper end face of the sleeve (2) and is matched with the insert to install the three-column insulator (3) in the sleeve in a positioning mode.

5. The conductive particle suppression apparatus as recited in claim 1, 2 or 4, wherein: the sleeve (2) is a metal thin-wall cylinder.

6. The conductive particle suppression apparatus as recited in claim 5, wherein: the metal thin-wall cylinder is made of aluminum or aluminum alloy materials.

7. The conductive particle suppression apparatus as recited in claim 6, wherein: the circumference surface of sleeve (2) is provided with the mounting plane, fixed orifices (201) are seted up on the mounting plane.