CN113690073A

CN113690073A - Isolating switch with self-cleaning function

Info

Publication number: CN113690073A
Application number: CN202111253223.5A
Authority: CN
Inventors: 杨晓冬; 王成全; 丁海群; 董军军; 王欣怡; 石勇
Original assignee: Wisdom Rugao High Voltage Switch Co ltd
Current assignee: Rugao Quanxing Power Engineering Co.,Ltd.
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2021-11-23
Anticipated expiration: 2041-10-27
Also published as: CN113690073B

Abstract

The invention discloses an isolating switch with a self-cleaning function, which comprises a protective box, wherein two transmission rods are symmetrically and slidably connected to the side wall of the protective box, the two transmission rods are arranged to penetrate through the side wall of the protective box, the side walls, close to each other, of the two transmission rods are fixedly connected with insulating blocks, mounting grooves are formed in the side walls of the insulating blocks, first rods are rotatably connected to the inner walls of the mounting grooves, the side walls of the first rods are symmetrically and fixedly connected with two second rods, two contacts are fixedly connected to the side walls of the two second rods, a cleaning mechanism is mounted in each mounting groove and comprises a sliding groove formed in the inner wall of the mounting groove, and a plurality of cleaning blocks are slidably connected to the inner walls of the sliding grooves. The cleaning mechanism can scrape off oxides on the surface of the contact, and avoids the phenomenon that the contact has overlarge resistance when in work, so that the contact is overheated, further damages the contact and reduces the service life of the contact.

Description

Isolating switch with self-cleaning function

Technical Field

The invention relates to the technical field of isolating switches, in particular to an isolating switch with a self-cleaning function.

Background

The isolating switch is one of the most used high-voltage switch electric appliances, is used for various levels of voltage, is used for changing circuit connection or isolating circuits or equipment from a power supply, and is widely applied to power plants and substations at present.

In the use process of the existing disconnecting switch, two contacts are in contact operation for a long time, the surfaces of the contacts can be covered with oxides due to the reasons of arc discharge, ignition, oxidation and the like, the oxides can be covered on the contacts for a long time and are not cleaned, the resistance between the two contacts can be increased, the two contacts are overheated, the contacts are damaged, the service life of the contacts is shortened, and therefore the disconnecting switch with the self-cleaning function is provided.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a disconnecting switch with a self-cleaning function.

In order to achieve the purpose, the invention adopts the following technical scheme:

an isolating switch with a self-cleaning function comprises a protective box, wherein two transmission rods are symmetrically and slidably connected to the side wall of the protective box, the two transmission rods are arranged to penetrate through the side wall of the protective box, the side walls, close to each other, of the two transmission rods are fixedly connected with insulating blocks, mounting grooves are formed in the side walls of the insulating blocks, first rods are rotatably connected to the inner walls of the mounting grooves, the side walls of the first rods are symmetrically and fixedly connected with two second rods, two contacts are fixedly connected to the side walls of the two second rods, a cleaning mechanism is mounted in each mounting groove and comprises a sliding groove formed in the inner wall of the mounting groove, a plurality of cleaning blocks are slidably connected to the inner wall of the sliding groove, the cleaning blocks are connected through a plurality of conductive springs, one end of each conductive spring is fixedly connected with the inner wall of the sliding groove, and a working box is fixedly connected to the inner wall of the protective box, the working box inner wall is symmetrically, hermetically and fixedly connected with two isolation plates, the isolation plates divide the interior of the working box into an evaporation chamber, a working chamber and a cooling chamber, and the inner wall of the working chamber is fixedly connected with a capacitor and is multiple in electrical connection with the conductive spring and the capacitor.

Further, one of them installation charging mechanism on the division board, charging mechanism is used for charging the condenser, charging mechanism includes the intake pipe of fixed connection in one of them division board upper end, the evaporating chamber passes through intake pipe and cooling chamber intercommunication, the intake pipe inner wall rotates and is connected with the third pole, third pole lateral wall fixedly connected with impeller, the impeller adopts magnetic material to make, the intake pipe lateral wall inlays and is equipped with induction coil, induction coil and condenser electric connection.

Further, install actuating mechanism on the third pole, actuating mechanism establishes the torsional spring at the third pole lateral wall including the cover, fixed connection between torsional spring and the third pole, torsional spring one end and intake pipe inner wall fixed connection, third pole one end runs through work box lateral wall and the one-way bearing of fixedly connected with, one-way bearing lateral wall fixedly connected with action wheel, two first pole one end runs through two insulating block lateral walls and two fixedly connected with from the driving wheel respectively, connect through the hold-in range between action wheel and the two follow driving wheels.

Further, the cooling chamber passes through drain pipe and evaporation chamber intercommunication, the solenoid valve is all installed to intake pipe and drain pipe inner wall, the solenoid valve all with condenser electric connection.

Further, the lower end of the working box is fixedly connected with a heat conducting rod, the heat conducting rod is made of a material with good heat conducting performance, and impurity discharging holes are formed in the inner walls of the two mounting grooves.

Furthermore, the inside of the evaporation chamber is filled with a low-boiling-point evaporation liquid, and the low-boiling-point evaporation liquid adopts a dichloromethane solution.

The invention has the following beneficial effects:

1. by arranging the cleaning mechanism, oxides on the surface of the contact can be scraped, and the phenomenon that the contact is overheated due to excessive oxides on the contact, so that the contact is overheated when the contact works, the contact is further damaged, and the service life of the contact is shortened;

2. by arranging the mounting groove, the first rod, the second rod, the contact and the driving mechanism, the contact needing to be cleaned can be automatically transferred into the mounting groove to be cleaned, and the other two contacts can be kept in contact, so that the isolating switch can be kept in normal operation, the contact can be automatically cleaned under the condition that the power is not cut off by the whole device, and the device is more convenient;

3. through setting up the evaporating chamber, heat conduction stick and dichloromethane solution, the heat transfer that the heat conduction stick can produce the contact during operation gives dichloromethane solution, and then for the contact cooling, be favorable to improving the life of contact, and the dichloromethane heat absorption can produce the gasification, the dichloromethane gasification of itself is a continuous process, can drive the impeller and continuously rotate and can not stall, make induction coil can continuously produce the electric current, continuously charge the condenser, can not discharge midway, make whole device operation more stable.

4. Through setting up cooling chamber, drain pipe and solenoid valve, dichloromethane vapour can cool off in the cooling chamber, becomes liquid again, then flows back to in the evaporating chamber again through the drain pipe for dichloromethane solution can reuse, avoids the waste of resource.

Drawings

Fig. 1 is a schematic structural diagram of a disconnecting switch with a self-cleaning function according to the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1 taken along line A-A;

FIG. 3 is a schematic cross-sectional view of the structure of FIG. 1 taken along line B-B;

FIG. 4 is an enlarged schematic view of the structure at C in FIG. 1;

FIG. 5 is an enlarged schematic view of the structure of FIG. 1 at D;

fig. 6 is an enlarged schematic view of the structure at E in fig. 2.

In the figure: the device comprises a protection box 1, a transmission rod 2, an insulating block 3, a mounting groove 4, a first rod 5, a second rod 6, a contact 7, a sliding groove 8, a cleaning block 9, a conductive spring 10, a working box 11, a partition plate 12, an evaporation chamber 121, a working chamber 122, a cooling chamber 123, a capacitor 13, an air inlet pipe 14, a third rod 15, an impeller 16, a torsion spring 17, an induction coil 18, a one-way bearing 19, a driving wheel 20, a driven wheel 21, a liquid outlet pipe 22, a heat conducting rod 23 and a impurity removing hole 24.

Detailed Description

Referring to fig. 1-6, an isolating switch with a self-cleaning function comprises a protective box 1, wherein two transmission rods 2 are symmetrically and slidably connected to the side wall of the protective box 1, the two transmission rods 2 are arranged to penetrate through the side wall of the protective box 1, the side walls, close to each other, of the two transmission rods 2 are fixedly connected with insulating blocks 3, the side wall of each insulating block 3 is provided with a mounting groove 4, the inner wall of each mounting groove 4 is rotatably connected with a first rod 5, the side wall of each first rod is symmetrically and fixedly connected with two second rods 6, the side walls of the two second rods 6 are fixedly connected with two contacts 7, a cleaning mechanism is arranged in each mounting groove 4 and comprises a chute 8 arranged on the inner wall of each mounting groove 4, the inner wall of each chute 8 is slidably connected with a plurality of cleaning blocks 9, the cleaning blocks 9 are connected through a plurality of conductive springs 10, one end of each conductive spring 10 is fixedly connected with the inner wall of the chute 8, and the inner wall of the protective box 1 is fixedly connected with a working box 11, two division boards 12 of 11 inner wall symmetry sealing fixedly connected with of work box, two division boards 12 divide work box 11 inside into evaporating chamber 121, studio 122 and cooling chamber 123 three, evaporating chamber 121 is inside to be filled with low boiling point evaporating liquid, low boiling point evaporating liquid adopts dichloromethane solution, studio 122 inner wall fixedly connected with condenser 13, a plurality of conductive spring 10 and condenser 13 electric connection, work box 11 lower extreme fixedly connected with heat conduction stick 23, heat conduction stick 23 adopts the material that heat conductivility is good to make, heat conduction stick 23 can transmit the heat that produces when two contacts 7 move, heat dichloromethane solution, can cool down contact 7 in service, and then improve contact 7's life, row's miscellaneous hole 24 has all been seted up to two mounting groove 4 inner walls.

The charging mechanism is installed on one of the isolation plates 12 and used for charging the capacitor 13, the charging mechanism comprises an air inlet pipe 14 fixedly connected to the upper end of one of the isolation plates 12, the evaporation chamber 121 is communicated with the cooling chamber 123 through the air inlet pipe 14, the inner wall of the air inlet pipe 14 is rotatably connected with a third rod 15, the side wall of the third rod 15 is fixedly connected with an impeller 16, the impeller 16 is made of a magnetic material, an induction coil 18 is embedded in the side wall of the air inlet pipe 14, and the induction coil 18 is electrically connected with the capacitor 13.

Further, the heat that two contacts 7 produced in the contact operation process can be passed through heat conduction rod 23 and be transmitted, heats dichloromethane solution, and dichloromethane solution is heated the gasification evaporation, and during gasified dichloromethane can flow into cooling chamber 123 through intake pipe 14, dichloromethane steam can drive impeller 16 when the intake pipe 14 that flows through rotates, and the rotation in-process of impeller 16 can be continuous cuts the magnetic induction line for induction coil 18 produces the induced current, charges to condenser 13.

The third rod 15 is provided with a driving mechanism, the driving mechanism comprises a torsion spring 17 sleeved on the side wall of the third rod 15, the torsion spring 17 is fixedly connected with the third rod 15, one end of the torsion spring 17 is fixedly connected with the inner wall of the air inlet pipe 14, one end of the third rod 15 penetrates through the side wall of the working box 11 and is fixedly connected with a one-way bearing 19, the side wall of the one-way bearing 19 is fixedly connected with a driving wheel 20, one ends of two first rods 5 respectively penetrate through the side walls of two insulating blocks 3 and are fixedly connected with two driven wheels 21, the driving wheel 20 is connected with the two driven wheels 21 through a synchronous belt, it should be noted that the third rod 15 is fixedly connected with the inner ring of the one-way bearing 19, when the impeller 16 drives the third rod 15 to rotate in the forward direction, the driving wheel 20 cannot rotate under the action of the one-way bearing 19, when the torsion spring 17 drives the third rod 15 to rotate in the reverse direction, the driving wheel 20 is driven to rotate synchronously under the action of the one-way bearing 19, and the diameter of the driving wheel 20 is much smaller than that of the driven wheel 21, so that the rotating speed of the driving wheel 20 is much greater than that of the driven wheel 21.

It should be noted that the third rod 15 rotates reversely under the action of the torsion spring 17, and then drives the contact 7 to rotate, and when the energy of the torsion spring 17 is completely released, the contact 7 can be driven to rotate 180 degrees.

Cooling chamber 123 passes through drain pipe 22 and evaporation chamber 121 intercommunication, the solenoid valve is all installed to intake pipe 14 and drain pipe 22 inner wall, the solenoid valve all with condenser 13 electric connection, it should be said, the solenoid valve circular telegram of intake pipe 14 inner wall installation can be closed, the outage can be opened, the solenoid valve circular telegram of drain pipe 22 inner wall installation can be opened, the outage can be closed, furthermore, when condenser 13 discharges, the solenoid valve circular telegram of drain pipe 22 inner wall installation is opened, dichloromethane solution after the cooling in the cooling chamber 123 can flow back to evaporation chamber 121 through drain pipe 22 again, make dichloromethane solution can reuse, avoid the waste of resource.

Further, after the dichloromethane in the evaporation chamber 121 is completely evaporated, the air inlet pipe 14 does not flow into the dichloromethane vapor any more, at this time, the third rod 15 reversely rotates under the action of the torsion spring 17, the third rod 15 drives the driving wheel 20 to rotate through the one-way bearing 19, the driving wheel 20 drives the two driven wheels 21 to rotate through the synchronous belt, and further drives all the contacts 7 to rotate, so that all the contacts 7 rotate 180 degrees, the positions of the contacts 7 in the same mounting groove 4 are exchanged, which is convenient for cleaning, when two of the contacts 7 are cleaned, the other two contacts 7 are still in a contact working state, so that the whole device can automatically clean the contacts 7 under the condition of no power failure, which is more convenient, after the positions of the contacts 7 are exchanged, the third rod 15 cannot rotate at this time, the impeller 16 stops cutting the magnetic induction line, and the induction coil 18 does not charge the capacitor 13 any more, at this moment, the capacitor 13 starts to discharge, the alternating current is introduced into the conductive spring 10, so that the conductive spring 10 continuously stretches and retracts to drive the cleaning blocks 9 to continuously move in a reciprocating manner, oxides on the contact 7 are scraped, the phenomenon that the oxides on the contact 7 are too much is avoided, the contact 7 has too large resistance during working, the contact 7 is overheated, the contact 7 is damaged, and the service life of the contact 7 is shortened.

In the invention, two contacts 7 can generate heat in the contact operation process, the heat is transferred through the heat conducting rod 23 and absorbed by dichloromethane solution in the evaporation chamber 121, more and more heat can be continuously absorbed by dichloromethane solution along with the operation of the two contacts 7, the temperature of dichloromethane gradually rises and the phenomenon of gasification and evaporation starts to occur, the gasified dichloromethane can flow into the cooling chamber 123 through the air inlet pipe 14 for cooling, the gaseous dichloromethane solution can be changed into liquid dichloromethane solution again after being cooled and stored in the cooling chamber 123, dichloromethane vapor can drive the impeller 16 to rotate when flowing through the air inlet pipe 14, and magnetic induction lines can be continuously cut in the rotation process of the impeller 16, so that the induction coil 18 generates induction current to charge the capacitor 13;

when the dichloromethane in the evaporation chamber 121 is completely evaporated, the air inlet pipe 14 does not flow into the dichloromethane vapor any more, at this time, the third rod 15 reversely rotates under the action of the torsion spring 17 to drive the impeller 16 to rotate, so as to cut the magnetic induction line, so that the induction coil 18 generates an induction current, and the capacitor 13 is continuously charged, and the third rod 15 synchronously drives the driving wheel 20 to rotate through the one-way bearing 19, the driving wheel 20 drives the two driven wheels 21 to rotate through the synchronous belt, and further drives the two first rods 5 to rotate, so as to drive the second rod 6 to rotate, and further drive the contact 7 to rotate, so that the contact 7 rotates 180 degrees, and the positions of the contacts 7 in the same mounting groove 4 are exchanged;

after the position of the contact 7 is changed, the third rod 15 does not rotate at the moment, the impeller 16 stops cutting the magnetic induction line, so that the induction coil 18 does not charge the capacitor 13, the capacitor 13 starts to discharge at the moment, and due to the characteristics that the capacitor 13 is resistant to direct current and is connected with alternating current, the capacitor 13 can supply alternating current to the conductive springs 10, so that the conductive springs 10 are continuously contracted and extended to drive the cleaning blocks 9 to slide in the sliding chute 8 in a reciprocating manner, further the cleaning blocks 9 can scrape off oxides on the surface of the contact 7, the oxides are prevented from influencing the normal operation of the contact 7, and the scraped oxide impurities can be discharged out of the mounting groove 4 through the impurity discharge hole 24;

when the capacitor 13 discharges, the electromagnetic valve installed on the inner wall of the liquid outlet pipe 22 is powered on and opened, the dichloromethane solution cooled in the cooling chamber 123 flows back to the evaporation chamber 121 through the liquid outlet pipe 22 again, so that the dichloromethane solution can be reused, and when the capacitor 13 discharges, the electromagnetic valve installed on the inner wall of the air inlet pipe 14 is powered on and closed, so that dichloromethane vapor cannot enter the air inlet pipe 14 to drive the impeller 16 to rotate, and when the cleaning block 9 cleans the contact 7, the contact 7 cannot rotate.

Claims

1. The isolating switch with the self-cleaning function comprises a protective box (1) and is characterized in that two transmission rods (2) are symmetrically and slidably connected to the side wall of the protective box (1), the two transmission rods (2) are arranged to penetrate through the side wall of the protective box (1), the side walls, close to each other, of the two transmission rods (2) are fixedly connected with insulating blocks (3), mounting grooves (4) are formed in the side wall of each insulating block (3), first rods (5) are rotatably connected to the inner wall of each mounting groove (4), the side walls of the first rods are symmetrically and fixedly connected with two second rods (6), two contacts (7) are fixedly connected to the side walls of the two second rods (6), a cleaning mechanism is installed in each mounting groove (4), the cleaning mechanism comprises a sliding groove (8) formed in the inner wall of each mounting groove (4), and a plurality of cleaning blocks (9) are slidably connected to the inner wall of each sliding groove (8), it is a plurality of connect through a plurality of electrically conductive spring (10) between clean piece (9), one of them electrically conductive spring (10) one end and spout (8) inner wall fixed connection, protective housing (1) inner wall fixedly connected with work box (11), two division board (12) of work box (11) inner wall symmetry sealing fixedly connected with, two division board (12) are with work box (11) inside division evaporation chamber (121), studio (122) and cooling chamber (123) three, studio (122) inner wall fixedly connected with condenser (13), it is a plurality of electrically conductive spring (10) and condenser (13) electric connection.

2. The isolating switch with the self-cleaning function according to claim 1, wherein a charging mechanism is installed on one of the isolating plates (12), the charging mechanism is used for charging the capacitor (13), the charging mechanism comprises an air inlet pipe (14) fixedly connected to the upper end of one of the isolating plates (12), the evaporation chamber (121) is communicated with the cooling chamber (123) through the air inlet pipe (14), a third rod (15) is rotatably connected to the inner wall of the air inlet pipe (14), an impeller (16) is fixedly connected to the side wall of the third rod (15), the impeller (16) is made of a magnetic material, an induction coil (18) is embedded in the side wall of the air inlet pipe (14), and the induction coil (18) is electrically connected with the capacitor (13).

3. The isolating switch with the self-cleaning function according to claim 2, wherein a driving mechanism is installed on the third rod (15), the driving mechanism comprises a torsion spring (17) sleeved on the side wall of the third rod (15), the torsion spring (17) is fixedly connected with the third rod (15), one end of the torsion spring (17) is fixedly connected with the inner wall of the air inlet pipe (14), one end of the third rod (15) penetrates through the side wall of the working box (11) and is fixedly connected with a one-way bearing (19), the side wall of the one-way bearing (19) is fixedly connected with a driving wheel (20), two ends of the first rod (5) penetrate through the side walls of the two insulating blocks (3) respectively and are fixedly connected with two driven wheels (21), and the driving wheel (20) and the two driven wheels (21) are connected through a synchronous belt.

4. The isolating switch with the self-cleaning function according to claim 3, wherein the cooling chamber (123) is communicated with the evaporation chamber (121) through a liquid outlet pipe (22), and electromagnetic valves are mounted on the inner walls of the air inlet pipe (14) and the liquid outlet pipe (22) and are electrically connected with the capacitor (13).

5. The isolating switch with the self-cleaning function according to claim 4, wherein a heat conducting rod (23) is fixedly connected to the lower end of the working box (11), the heat conducting rod (23) is made of a material with good heat conducting property, and impurity removing holes (24) are formed in the inner walls of the two mounting grooves (4).

6. The isolating switch with self-cleaning function according to claim 1, wherein the evaporation chamber (121) is filled with a low boiling point evaporation liquid, and the low boiling point evaporation liquid is dichloromethane solution.