An outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker

Abstract

The present invention relates to the technical field of switch electric shock operation, and discloses an outdoor column-mounted sealed high-voltage AC vacuum circuit breaker, including a circuit breaker body, the circuit breaker body is composed of a shell, an insulating cylinder and a bottom plate, a plurality of insulating cylinders are arranged on the shell, and a bottom plate is fixed to the bottom of the shell, a solenoid valve and a connecting rod mechanism are installed in the shell, a connecting piece is installed at one end of the connecting rod mechanism, the connecting piece is connected to the solenoid valve, and the other end is movably connected to an insulating rod, a lower terminal seat and an upper terminal seat are arranged on the side of the insulating cylinder, and a lower limit block is arranged on the side of the lower terminal seat. By utilizing the arc generated when the moving contact and the static contact are separated, the magnetic plate is energized to generate magnetic force, and under the repulsive force between the magnetic plate and the magnetic sheet, the static contact and the moving contact are moved in opposite directions to realize the opening of the gate, and at the same time, the telescopic rod is lifted up by the generated liquid pressure to realize the supporting effect on the static contact, which effectively improves the stability of the static contact after separation.

Description

Technical Field

[0001] The invention relates to the technical field of switch electric shock operation, in particular to an outdoor pole-mounted solid-sealed high-voltage AC vacuum circuit breaker. Background Art

[0002] Outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker is a high-voltage switchgear widely used in power systems, especially in transmission and distribution lines, for controlling and protecting circuits. Its main function is to automatically disconnect the circuit when a short circuit or overload occurs, ensuring the safety and stability of the power system. The device has strong anti-interference ability, long service life and high reliability, and is particularly suitable for use in harsh outdoor environments.

[0003] The traditional sealed high-voltage AC vacuum circuit breaker adopts the traditional four-bar transmission mechanism. When opening the circuit, it drives the moving contact to descend and separate from the static contact. However, during long-term use, the four-bar transmission mechanism will produce an indefinite amount of displacement, resulting in a decrease in the power generated by the transmission, and the contacts cannot complete the effective separation operation.

[0004] According to the Chinese invention patent number: CN110828227A, a full-operating intelligent sealed high-voltage AC vacuum circuit breaker is proposed, including a transmission chamber, an insulating cylinder, and an arc extinguishing chamber. The insulating cylinder is provided with an arc extinguishing chamber, and the upper and lower ends of the arc extinguishing chamber are respectively connected to a support rod and a moving conductive rod, the top of the support rod is connected to a sealing plate, the bottom of the moving conductive rod is connected to the top of the disc spring, and the lower end of the disc spring is connected to an insulating pull rod. The present invention can make the upper and lower contacts in the arc extinguishing chamber move in opposite directions when opening, which reduces the burning of the contacts and effectively reduces the shaking after opening, thereby extending the service life of the contacts. It relies on the magnetic circuit composed of the armature and the static iron core to generate suction to realize the bidirectional opening and closing operation of the static contact and the moving contact. However, when the opening is completed, the static contact has no support, which will still cause the static contact to sink. At the same time, the hardware relying on the armature and the static iron core is easy to wear during long-term use, and has a short service life. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides an outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker, which has the advantages of ensuring the stability and service life of the static contact and the moving contact when opening and closing the circuit, and solves the problems of the static contact being unstable when opening and closing the circuit in both directions using the static contact and the moving contact, and the armature and the static iron core being easily worn out for a long time, resulting in a short service life.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker, comprising a circuit breaker body, the circuit breaker body consisting of an outer shell, an insulating cylinder and a bottom plate, a plurality of insulating cylinders are arranged on the outer shell, and a bottom plate is fixed to the bottom of the outer shell, the insulating cylinders are equidistantly distributed on the outer shell, and the insulating cylinders are interconnected with the inner shell, providing sufficient space for internal components.

[0009] A solenoid valve and a connecting rod mechanism are installed in the shell. A connecting piece is installed at one end of the connecting rod mechanism, which is connected to the solenoid valve, and an insulating rod is movably connected to the other end. The connecting rod mechanism is a four-link structure. When the connecting piece is connected to the solenoid valve, the current transmission operation is realized. When the switch is opened, the connecting piece is separated from the operation generated by the solenoid valve, and the insulating rod is pulled by the connecting rod mechanism to control the separation of the moving contact and the static contact.

[0010] A lower terminal block and an upper terminal block are arranged on the side of the insulating cylinder, a lower limit block is arranged on the side of the lower terminal block, and an upper limit block is arranged on the side of the upper terminal block. The lower limit block and the upper limit block are used to increase the stable contact pressure of the arc extinguishing chamber, improve the structural stability, enhance the insulation performance, and ensure the safety and reliability of electrical equipment under high voltage and high load.

[0011] A soft connection is fixed on the inner side of the lower limit block, and a disc spring is installed at the bottom of the soft connection. The disc spring is fixed on the insulating rod. The soft connection can effectively absorb mechanical stress, compensate for thermal expansion, reduce contact resistance, provide flexible connection and enhance the overall durability of the equipment. The disc spring provides continuous elastic force and maintains stable mechanical pressure. When connected to the insulating rod, the disc spring can provide appropriate pressure between the pull rod and other components to ensure that the connecting part always maintains stable mechanical contact.

[0012] A sealing plate is fixed on the top of the upper limit block, which provides electrical isolation to prevent dust and moisture from entering the insulating cylinder, making the device sealed.

[0013] An arc extinguishing chamber is fixed inside the insulating cylinder.

[0014] A support rod is fixed above the arc extinguishing chamber, and the support rod is movably sleeved in the upper limit block. At the same time, one end of the support rod is fixed on the sealing plate, and a static conductive rod is fixed on the other end. A bellows shielding cover is fixed on the static conductive rod, and a bellows is connected to the bellows shielding cover. The support rod provides stability to the arc extinguishing chamber, and at the same time, the bellows is used to compensate for displacement, absorb vibration and prevent leakage, and the bellows shielding cover increases protection and shielding effects on the basis of the bellows.

[0015] A moving conductive rod is movably sleeved under the arc extinguishing chamber, one end of which passes through the bottom of the arc extinguishing chamber and is fixed on a disc spring. The disc spring is used to provide stable conductive properties for the moving conductive rod and compensate for movement or deformation of the equipment under elastic force.

[0016] A static contact is fixed at one end of the static conductive rod, and a dynamic contact is fixed at one end of the dynamic conductive rod. The static contact is arranged opposite to the dynamic contact, and the dynamic contact and the static contact move vertically relative to each other to achieve connection and disconnection.

[0017] Auxiliary parts for controlling the bidirectional separation of the moving contact and the static contact are installed in the arc extinguishing chamber. When the moving contact moves downward and separates from the static contact, the static contact is driven to move synchronously through the auxiliary parts, so that the connection is closed when moving in relative directions and the connection is disconnected synchronously when moving in opposite directions, thereby increasing the speed of closing and disconnecting and reducing the generation of arcs.

[0018] As a further improvement of the above solution, the auxiliary component is composed of a magnetic plate and a magnetic sheet, the magnetic plate is located on the moving path of the moving contact, and the magnetic sheet is fixed on the stationary contact, and the magnetic plate and the magnetic sheet are arranged opposite to each other.

[0019] Through the above technical solution, the magnetic plate and the magnetic sheet are vertically opposite to each other, wherein the magnetic plate is an electromagnet. After power is turned on, a magnetic repulsive force is generated between the magnetic plate and the magnetic sheet, thereby driving the static contact to move in the opposite direction and increasing the opening speed.

[0020] As a further improvement of the above solution, the auxiliary component includes a stabilizing sleeve fixed in the arc extinguishing chamber, the magnetic plate is fixed on the stabilizing sleeve, and an armature is fixed on the side of the moving contact, and the armature is movably sleeved in the stabilizing sleeve.

[0021] Through the above technical solution, the armature is used to absorb the arc generated when the moving contact and the static contact are separated, and the electric energy of the arc is transferred to the magnetic plate when the moving contact moves downward, so that the magnetic plate is energized to generate magnetism.

[0022] As a further improvement of the above solution, a transmission cylinder is fixed in the arc extinguishing chamber, an air bag is fixed on the transmission cylinder, and one end of the air bag is fixed to the bottom of the armature.

[0023] Through the above technical solution, the arc extinguishing chamber is in a vacuum state, the transmission tube is not connected to the arc extinguishing chamber, and the pressure generated by the downward movement of the moving contact presses the airbag to make the transmission tube operate.

[0024] As a further improvement of the above solution, a connecting pipe is fixed on the side of the transmission cylinder, and a liquid pipe is fixed on the side of the arc extinguishing chamber. One end of the connecting pipe passes through the arc extinguishing chamber and is connected with the liquid pipe.

[0025] Through the above technical solution, the airbag, the transmission tube and the liquid tube are filled with the first liquid. After the airbag is compressed, the first liquid in the liquid tube generates pressure and is input into the connected flow cavity from the top.

[0026] As a further improvement of the above scheme, a stabilizing member is fixed in the arc extinguishing chamber, and the stabilizing member includes a transmission box fixed in the arc extinguishing chamber, and two flow chambers are vertically and parallelly opened in the transmission box, a transfer tube is installed between one of the flow chambers and the liquid pipe, and a telescopic rod is movably sleeved in the other flow chamber.

[0027] Through the above technical solution, the first liquid is filled into the connected circulation cavity under pressure, and is transmitted to the other circulation cavity through the circulation hole, and pushes the separation ring to drive the telescopic rod to move upward. Conversely, after the first liquid is sucked back, the separation ring drives the telescopic rod to return to the initial position downward.

[0028] As a further improvement of the above solution, a separation ring is fixed to one end of the telescopic rod, and the separation ring is attached to the inner wall of the circulation cavity.

[0029] Through the above technical solution, the separation ring is attached to the inner wall of the corresponding flow cavity, so that the single flow cavity is divided into two independent spaces. When the first liquid is filled, the first liquid is prevented from penetrating into the upper space between the separation ring and the flow cavity.

[0030] As a further improvement of the above solution, the bottom ends of the two flow chambers are provided with interconnected flow holes.

[0031] Through the above technical solution, after the first liquid enters the connected flow cavity, it is filled into another flow cavity from the flow hole at the bottom, so that the first liquid in the filled flow cavity grows from bottom to top.

[0032] As a further improvement of the above solution, a linkage plate is fixed at one end of the telescopic rod, a linkage rod is fixed at one end of the linkage plate, and a connecting plate is fixed to the side of the static contact, and one end of the linkage rod is fixed to the connecting plate.

[0033] Through the above technical solution, when the telescopic rod moves up and down, the linkage plate drives the linkage rod to move synchronously, thereby realizing the up and down lifting and lowering effect of the push-pull connecting plate, and realizing the up and down movement of the static contact and the separation and closing effect of the moving contact.

[0034] As a further improvement of the above solution, a liquid storage box is movably sleeved on the side of the static conductive rod, and the liquid storage box is attached to the static contact. At the same time, a connecting pipe is fixed on the liquid storage box, and the connecting pipe connects adjacent flow chambers.

[0035] Through the above technical scheme, the upper space inside the separation ring and the flow cavity to which it is connected is filled with a second liquid, which is a condensate. When the separation ring rises, the second liquid is input into the liquid storage box through the connecting pipe to dissipate heat and cool the static contact. When the separation ring descends, the second liquid is drawn back for cooling.

[0036] Compared with the prior art, the present invention provides an outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker, which has the following beneficial effects:

[0037] 1. This outdoor column-mounted sealed high-voltage AC vacuum circuit breaker utilizes the arc generated when the moving contact and the static contact are separated to energize the magnetic plate to generate magnetic force. Under the mutual repulsive force between the magnetic plate and the magnetic sheet, the static contact and the moving contact move in opposite directions to achieve disconnection. At the same time, the telescopic rod is lifted up by the generated liquid pressure to achieve support for the static contact, effectively improving the stability of the static contact after separation.

[0038] 2. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker uses magnetic force to generate repulsive force to separate the moving contact and the static contact, and uses pressure to support the static contact for a long time. In the closed or power-off state, there is no need for magnetic force. Liquid suction is used to achieve synchronous closing of the static contact and the moving contact, which further improves the flexibility of use and service life of the invention.

[0039] 3. When the outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker is opened, a liquid with a cooling effect can be filled into the liquid storage box to dissipate heat from the contacts, thereby increasing the service life of the circuit breaker. At the same time, when the circuit breaker is closed, the liquid can be drawn out for cooling to achieve a circulating cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall external structure of the device of the present invention;

[0041] Figure 2 It is a schematic diagram of the overall external plane side structure of the device of the present invention;

[0042] Figure 3 This is a schematic diagram of the internal structure of the arc extinguishing chamber of the present invention;

[0043] Figure 4 It is a schematic diagram of the partial internal structure of the arc extinguishing chamber of the present invention.

[0044] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0045] 1. Circuit breaker body; 18. Auxiliary parts;

[0046] 11. housing; 111. solenoid valve; 112. connecting rod mechanism; 113. connecting piece; 114. insulating rod;

[0047] 12. Insulating cylinder; 121. Lower terminal block; 122. Upper terminal block; 123. Disc spring; 124. Lower limit block; 125. Soft connection; 126. Upper limit block; 127. Sealing plate;

[0048] 13. Bottom plate;

[0049] 14, arc extinguishing chamber; 141, moving conductive rod; 142, armature; 143, moving contact; 144, static conductive rod; 145, connecting plate; 146, static contact; 147, bellows shield; 1471, support rod; 148, bellows; 149, linkage rod; 1410, linkage plate;

[0050] 15. Liquid tube;

[0051] 16. Transmission tube; 161. Air bag; 162. Connecting tube;

[0052] 17, stabilizing member; 171, transmission box; 172, circulation cavity; 173, circulation hole; 174, transfer tube; 175, telescopic rod; 176, separation ring; 177, connecting tube; 178, liquid storage box;

[0053] 18. Auxiliary parts; 181. Stabilizing sleeve; 182. Magnetic plate; 183. Magnetic sheet. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Embodiment 1

[0056] See also Figure 1-Figure 4 As shown, an outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker proposed in this embodiment includes a circuit breaker body 1, which is composed of a shell 11, an insulating cylinder 12 and a bottom plate 13. A plurality of insulating cylinders 12 are arranged on the shell 11, and a bottom plate 13 is fixed to the bottom of the shell 11. The insulating cylinders 12 are equidistantly distributed on the shell 11, and the insulating cylinders 12 are interconnected with the shell 11 to provide sufficient space for internal components.

[0057] An electromagnetic valve 111 and a connecting rod mechanism 112 are installed in the housing 11. A connecting piece 113 is installed at one end of the connecting rod mechanism 112, and the connecting piece 113 is connected to the electromagnetic valve 111, while the other end is movably connected to an insulating rod 114. The connecting rod mechanism 112 is a four-link structure. When the connecting piece 113 is connected to the electromagnetic valve 111, the current transmission operation is realized. When the gate is opened, the connecting piece 113 is separated from the operation generated by the electromagnetic valve 111, and the insulating rod 114 is pulled by the connecting rod mechanism 112 to control the moving contact 143 and the static contact 146 to separate.

[0058] A lower terminal seat 121 and an upper terminal seat 122 are provided on the side of the insulating cylinder 12, a lower limit block 124 is provided on the side of the lower terminal seat 121, and an upper limit block 126 is provided on the side of the upper terminal seat 122. The lower limit block 124 and the upper limit block 126 are used to increase the stable contact pressure of the arc extinguishing chamber 14, improve the structural stability, enhance the insulation performance, and ensure the safety and reliability of the electrical equipment under high voltage and high load.

[0059] A soft connection 125 is fixed on the inner side of the lower limit block 124, and a disc spring 123 is installed at the bottom of the soft connection 125. The disc spring 123 is fixed on the insulating rod 114. The soft connection 125 can effectively absorb mechanical stress, compensate for thermal expansion, reduce contact resistance, provide flexible connection and enhance the overall durability of the equipment. The disc spring 123 provides continuous elastic force and maintains stable mechanical pressure. When connected to the insulating rod 114, the disc spring 123 can provide appropriate pressure between the pull rod and other components to ensure that the connecting part always maintains stable mechanical contact.

[0060] A sealing plate 127 is fixed on the top of the upper limit block 126 , and the sealing plate 127 provides electrical isolation to prevent dust and moisture from entering the insulating tube, so that the device is in a sealed state.

[0061] An arc extinguishing chamber 14 is fixed inside the insulating cylinder 12 .

[0062] A support rod 1471 is fixed above the arc extinguishing chamber 14, and the support rod 1471 is movably sleeved in the upper limit block 126. At the same time, one end of the support rod 1471 is fixed to the sealing plate 127, and the other end is fixed to the static conductive rod 144, and a bellows shielding cover 147 is fixed to the static conductive rod 144, and a bellows 148 is connected to the bellows shielding cover 147. The support rod 1471 provides stability to the arc extinguishing chamber 14, and at the same time compensates for displacement, absorbs vibration and prevents leakage through the bellows, and increases protection and shielding effects on the basis of the bellows 148 through the bellows shielding cover 147.

[0063] A moving conductive rod 141 is movably sleeved below the arc extinguishing chamber 14, one end of which passes through the bottom of the arc extinguishing chamber 14 and is fixed on a disc spring 123. The disc spring 123 is used to provide stable conductive properties for the moving conductive rod 141 and compensate for movement or deformation of the equipment under elastic force.

[0064] A static contact 146 is fixed to one end of the static conductive rod 144, and a dynamic contact 143 is fixed to one end of the dynamic conductive rod 141. The static contact 146 is arranged opposite to the dynamic contact 143. The dynamic contact 143 and the static contact move vertically relative to each other to achieve connection and disconnection.

[0065] The arc extinguishing chamber 14 is installed with an auxiliary component 18 for controlling the bidirectional separation of the moving contact 143 and the static contact 146. When the moving contact 143 moves downward and separates from the static contact 146, the static contact 146 is driven to move synchronously by the auxiliary component 18, so as to achieve the effect of closing and connecting when moving in relative directions and disconnecting synchronously when moving in opposite directions, thereby improving the speed of closing and disconnecting and reducing the generation of arcs.

[0066] Embodiment 2

[0067] See also Figure 3-Figure 4 As shown, the outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker proposed in this embodiment, on the basis of embodiment one, also includes that the auxiliary component 18 is composed of a magnetic plate 182 and a magnetic sheet 183, the magnetic plate 182 is located on the moving path of the moving contact 143, and the magnetic sheet 183 is fixed on the static contact 146, and the magnetic plate 182 and the magnetic sheet 183 are arranged opposite to each other.

[0068] The magnetic plate 182 and the magnetic sheet 183 are vertically opposite to each other, wherein the magnetic plate 182 is an electromagnet. When energized, a magnetic repulsive force is generated between the magnetic plate 182 and the magnetic sheet 183, thereby pushing the static contact 146 to move in the opposite direction, thereby increasing the opening speed.

[0069] Furthermore, the auxiliary component 18 includes a stabilizing sleeve 181 fixed in the arc extinguishing chamber 14 , a magnetic plate 182 fixed on the stabilizing sleeve 181 , and an armature 142 is fixed to the side of the moving contact 143 , and the armature 142 is movably sleeved in the stabilizing sleeve 181 .

[0070] More specifically, the armature 142 is used to absorb the arc generated when the moving contact 143 is separated from the stationary contact 146, and transfer the electric energy of the arc to the magnetic plate 182 when the moving contact 143 moves downward, so that the magnetic plate 182 is energized to generate magnetism.

[0071] Embodiment 3

[0072] See also Figure 3-Figure 4 As shown, the outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker mentioned in this embodiment, on the basis of embodiment 2, also includes that a transmission cylinder 16 is fixed in the arc extinguishing chamber 14, an air bag 161 is fixed on the transmission cylinder 16, and one end of the air bag 161 is fixed to the bottom of the armature 142.

[0073] More specifically, the arc extinguishing chamber 14 is in a vacuum state, the transmission tube 16 is not connected to the arc extinguishing chamber 14, and the pressure generated by the downward movement of the moving contact 143 presses the air bag 161 to make the transmission tube 16 operate.

[0074] Furthermore, a connecting pipe 162 is fixed to the side of the transmission cylinder 16 , and a liquid pipe 15 is fixed to the side of the arc extinguishing chamber 14 . One end of the connecting pipe 162 passes through the arc extinguishing chamber 14 and is connected to the liquid pipe 15 .

[0075] More specifically, the airbag 161, the transmission tube 16 and the liquid tube 15 are filled with a first liquid (which has insulating properties). After the airbag 161 is compressed, the first liquid in the liquid tube 15 generates pressure and is input into the connected flow cavity 172 from the top.

[0076] Furthermore, a stabilizing member 17 is fixed in the arc extinguishing chamber 14, and the stabilizing member 17 includes a transmission box 171 fixed in the arc extinguishing chamber 14, and two flow chambers 172 are vertically and parallelly opened in the transmission box 171, and a transfer tube 174 is installed between one of the flow chambers 172 and the liquid tube 15, and a telescopic rod 175 is movably sleeved in the other flow chamber 172, and a separation ring 176 is fixed at one end of the telescopic rod 175, and the separation ring 176 is attached to the inner wall of the flow chamber 172.

[0077] More specifically, the first liquid is filled into the connected circulation chamber 172 under pressure, and is transmitted to the other circulation chamber 172 through the circulation hole 173, and pushes the separation ring 176 to drive the telescopic rod 175 to move upward. Conversely, after the first liquid is sucked back, the separation ring 176 drives the telescopic rod 175 to return downward to the initial position.

[0078] The separation ring 176 is attached to the inner wall of the corresponding flow cavity 172 to separate the single flow cavity 172 into two independent spaces. When the first liquid is filled, the first liquid is prevented from penetrating into the upper space between the separation ring 176 and the flow cavity 172.

[0079] Furthermore, the bottom ends of the two flow chambers 172 are provided with interconnected flow holes 173 .

[0080] More specifically, after the first liquid enters the connected flow cavity 172, it is filled into another flow cavity 172 from the flow hole 173 at the bottom, so that the first liquid in the filled flow cavity 172 grows from bottom to top.

[0081] Furthermore, a linkage plate 1410 is fixed to one end of the telescopic rod 175 , a linkage rod 149 is fixed to one end of the linkage plate 1410 , and a connecting plate 145 is fixed to the side of the static contact 146 , and one end of the linkage rod 149 is fixed to the connecting plate 145 .

[0082] More specifically, when the telescopic rod 175 moves up and down, the linkage plate 1410 drives the linkage rod 149 to move synchronously, thereby achieving the effect of pushing and pulling the connecting plate 145 up and down, and achieving the effect of the static contact 146 moving up and down and separating and closing the moving contact 143.

[0083] Furthermore, a liquid storage box 178 is movably sleeved on the side of the static conductive rod 144 , and the liquid storage box 178 is attached to the static contact 146 . Meanwhile, a connecting tube 177 is fixed on the liquid storage box 178 , and the connecting tube 177 connects the adjacent flow chambers 172 .

[0084] More specifically, the upper space inside the separation ring 176 and the flow cavity 172 to which it is connected is filled with a second liquid, which is a condensate. When the separation ring 176 rises, the second liquid is input into the liquid storage box 178 through the connecting pipe 177 to dissipate heat and cool the static contact 146. When the separation ring 176 descends, the second liquid is drawn back for cooling.

[0085] The gap between the connecting pipe 162 and the connecting pipe 177 that passes through the arc extinguishing chamber 14 is fully bonded by silicone glue, polyurethane glue, or polytetrafluoroethylene glue (any glue that can have the characteristics of electrical insulation, high temperature resistance, chemical corrosion resistance, and mechanical strength after bonding the gap, and can meet the sealing requirements of the circuit breaker under high pressure, high temperature, and harsh environment, without any limitation here).

[0086] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker, comprising a circuit breaker body (1), characterized in that: The circuit breaker body (1) is composed of a shell (11), an insulating cylinder (12) and a bottom plate (13); a plurality of insulating cylinders (12) are arranged on the shell (11), and a bottom plate (13) is fixed to the bottom of the shell (11); A solenoid valve (111) and a connecting rod mechanism (112) are installed in the housing (11); a connecting piece (113) is installed at one end of the connecting rod mechanism (112), the connecting piece (113) is connected to the solenoid valve (111), and an insulating rod (114) is movably connected to the other end of the connecting rod mechanism (112); A lower wiring seat (121) and an upper wiring seat (122) are provided on the side of the insulating cylinder (12); a lower limit block (124) is provided on the side of the lower wiring seat (121); an upper limit block (126) is provided on the side of the upper wiring seat (122); a soft connection (125) is fixed inside the lower limit block (124); a disc spring (123) is installed at the bottom of the soft connection (125); the disc spring (123) is fixed on the insulating rod (114); and a sealing plate (127) is fixed on the top of the upper limit block (126); An arc extinguishing chamber (14) is fixed in the insulating cylinder (12), a support rod (1471) is fixed above the arc extinguishing chamber (14), the support rod (1471) is movably sleeved in the upper limit block (126), one end of the support rod (1471) is fixed to the sealing plate (127), and a static conductive rod (144) is fixed to the other end, a bellows shielding cover (147) is fixed to the static conductive rod (144), a bellows (148) is connected to the bellows shielding cover (147), a moving conductive rod (141) is movably sleeved below the arc extinguishing chamber (14), one end of the moving conductive rod (141) passes through the bottom of the arc extinguishing chamber (14) and is fixed to the disc spring (123); A static contact (146) is fixed to one end of the static conductive rod (144), and a dynamic contact (143) is fixed to one end of the dynamic conductive rod (141), wherein the static contact (146) and the dynamic contact (143) are arranged opposite to each other; An auxiliary component (18) for controlling bidirectional separation of a moving contact (143) and a stationary contact (146) is installed in the arc extinguishing chamber (14); The auxiliary component (18) is composed of a magnetic plate (182) and a magnetic sheet (183), wherein the magnetic plate (182) is located on the moving path of the moving contact (143), and the magnetic sheet (183) is fixed on the stationary contact (146), and the magnetic plate (182) and the magnetic sheet (183) are arranged relative to each other.

2. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 1 is characterized in that: The auxiliary component (18) comprises a stabilizing sleeve (181) fixed in the arc extinguishing chamber (14), the magnetic plate (182) is fixed on the stabilizing sleeve (181), and an armature (142) is fixed on the side of the moving contact (143), and the armature (142) is movably sleeved in the stabilizing sleeve (181).

3. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 2 is characterized in that: A transmission cylinder (16) is fixed in the arc extinguishing chamber (14), an air bag (161) is fixed on the transmission cylinder (16), and one end of the air bag (161) is fixed to the bottom of the armature (142).

4. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 3 is characterized in that: A connecting pipe (162) is fixed to the side of the transmission cylinder (16), and a liquid pipe (15) is fixed to the side of the arc extinguishing chamber (14); one end of the connecting pipe (162) passes through the arc extinguishing chamber (14) and is connected to the inside of the liquid pipe (15).

5. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 4 is characterized in that: A stabilizing member (17) is fixed in the arc extinguishing chamber (14), and the stabilizing member (17) comprises a transmission box (171) fixed in the arc extinguishing chamber (14), and two flow chambers (172) are vertically and parallelly provided in the transmission box (171), wherein a transfer tube (174) is installed between one of the flow chambers (172) and the liquid pipe (15), and a telescopic rod (175) is movably sleeved in the other of the flow chambers (172).

6. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 5, characterized in that: A separation ring (176) is fixed to one end of the telescopic rod (175), and the separation ring (176) is fitted onto the inner wall of the circulation cavity (172).

7. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 6, characterized in that: Interconnected flow holes (173) are provided at the bottom ends of the two flow chambers (172).

8. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 6, characterized in that: A linkage plate (1410) is fixed to one end of the telescopic rod (175), a linkage rod (149) is fixed to one end of the linkage plate (1410), and a connecting plate (145) is fixed to the side of the stationary contact (146), and one end of the linkage rod (149) is fixed to the connecting plate (145).

9. The outdoor pole-mounted sealed high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: A liquid storage box (178) is movably sleeved on the side of the static conductive rod (144), and the liquid storage box (178) is fitted onto the static contact (146). A connecting tube (177) is fixed to the liquid storage box (178), and the connecting tube (177) connects adjacent flow chambers (172).

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