Sensor integrated fusion circuit breaker

Abstract

The present application relates to a sensor-integrated fusion circuit breaker, and relates to the technical field of fusion circuit breakers, which includes a circuit breaker housing, a three-phase pole arranged on the circuit breaker housing, an operating mechanism arranged in the circuit breaker housing for opening and closing the three-phase pole, and a manual opening and closing pull rod arranged outside the circuit breaker housing, wherein the operating mechanism includes a rotating rod rotatably arranged in the circuit breaker housing, the rotating rod is connected to the manual opening and closing pull rod, and the circuit breaker housing is also provided with a deicing component for deicing the connection between the manual opening and closing pull rod and the circuit breaker housing, and a protective component arranged in the circuit breaker housing. The present application has the effect of facilitating the rotation of the main crank arm in extreme weather and improving the safety performance of the circuit breaker in extreme weather.

Description

Technical Field

[0001] The present application relates to the technical field of fused circuit breakers, and in particular to a sensor-integrated fused circuit breaker. Background Art

[0002] The fusion circuit breaker, also known as a primary-secondary fusion special circuit breaker, is an intelligent, high-performance power protection device that integrates high-voltage primary and secondary equipment.

[0003] A publication number CN116864341B discloses an outdoor primary-secondary fusion high-voltage circuit breaker isolation conductive circuit structure, which includes a circuit breaker body, a mounting frame and a current and voltage integrated sensor are provided on one side of the circuit breaker body, and an isolation pillar corresponding to the current and voltage integrated sensor is provided on the mounting frame; and a conductive circuit device, the conductive circuit device includes a conductive rod, an isolation blade and an isolation contact, the conductive rod passes through the current and voltage integrated sensor and is connected to the current output end in the circuit breaker body, the exposed end of the conductive rod is symmetrically provided with two isolation blades, and is connected to the isolation blade by fasteners, the isolation contact is provided on the isolation pillar, the middle section of the isolation blade is provided with a limit mechanism for adjusting its opening and closing angle, the isolation blade is provided with a clamping device at one end of the isolation blade away from the conductive rod, and the isolation blade is provided with an extension at one end of the isolation blade away from the conductive rod, and the extension is fixed by a clamping device provided on the isolation contact, and a main crank arm is provided in the sealed metal box, and the rotation of the main crank arm drives the isolation pull rods on the three phases to rotate, thereby realizing the disconnection operation of the three-phase circuit, and at the same time, one end of the main crank arm protrudes from the sealed metal box and is arranged and fixed with an operating handle.

[0004] With respect to the above-mentioned related technologies, when the current is normally disconnected, the contact and separation of the moving and static contacts on the pole are controlled by the current value detected by the current and voltage sensor. The contact and separation of the moving and static contacts drive the rotating shaft to rotate, thereby driving the main crank arm to rotate, and realizing the opening / closing operation of the terminal; when manual maintenance is performed, the technician performs the opening operation of the terminal by turning the operating handle; since the circuit breaker is often exposed, when encountering extreme freezing rain weather, the rotating shaft of the main crank arm and the sealed metal box is easily covered and solidified by freezing rain. Since the circuit opening operation involves the rotation of the main crank arm, at this time, whether it is the disconnecting circuit generated by the pole circuit breaker or the rotation of the operating handle, it is not easy to rotate the main crank arm, so it is not easy to perform the opening operation. When the transmission line is short-circuited and the opening is not timely, it is easy to cause accidents and property losses, so it needs to be improved. Summary of the invention

[0005] In order to facilitate the rotation of the main crank arm in extreme weather and improve the safety performance of the circuit breaker in extreme weather, the present application provides a sensor-integrated fusion circuit breaker.

[0006] The sensor-integrated fusion circuit breaker provided in this application adopts the following technical solution:

[0007] A sensor-integrated fusion circuit breaker comprises a circuit breaker housing, a three-phase pole arranged on the circuit breaker housing, an operating mechanism arranged in the circuit breaker housing for opening and closing the three-phase pole, and a manual opening and closing pull rod arranged on the outside of the circuit breaker housing, wherein the operating mechanism comprises a rotating rod rotatably arranged in the circuit breaker housing, the rotating rod is connected to the manual opening and closing pull rod, the circuit breaker housing is also provided with a deicing component for deicing the connection between the manual opening and closing pull rod and the circuit breaker housing, and a protective component arranged in the circuit breaker housing; the deicing component comprises a deicing wire embedded and fixed on the inner wall of the circuit breaker housing, the deicing wire is wound on the inner wall of the circuit breaker housing at the rotating shaft of the manual opening and closing pull rod, and the deicing wire is provided with two groups, and the two groups of deicing wires are respectively connected to the wiring terminals of the two-phase poles , and a connecting piece is provided between the two groups of de-icing lines. When the temperature is lower than the freezing point of water, the connecting piece connects the two groups of de-icing lines, and the two groups of de-icing lines generate instantaneous current, generating high heat to melt the ice layer outside the circuit breaker housing; one group of de-icing lines is provided with two contacts, and the two contacts are movably fitted together. When the two contacts are fitted together, the two groups of de-icing lines are connected and short-circuited; the protection component includes a protection block slidably arranged in the circuit breaker housing and a sliding piece for slidingly adjusting the protection block. The protection block is connected to the contacts, and the adjusting piece slides and adjusts the protection block as the temperature changes. When the temperature is lower than the freezing point of water, the protection block slides to a position where the two contacts are fitted together, and when the temperature is higher than the freezing point of water, the protection block slides to a position where the two contacts are separated.

[0008] When temperature control is performed in a conventional ring network cabinet, temperature monitoring is usually performed in the form of a temperature sensor alarm and then manual de-icing is performed. However, the temperature sensor is easily disturbed by the external environment during use, especially when used in a circuit breaker. It is easily disturbed by the magnetic field in a high voltage environment, which affects the temperature measurement result and easily leads to false data. In addition, the sensor in a high voltage environment needs to be calibrated regularly. It is not easy to calibrate after being set in the circuit breaker housing. If the sensor is set outside the housing, it is easy to get damp and needs to be replaced regularly, which increases hidden costs. At the same time, the temperature sensor needs to be packaged during installation. The packaged sensor is not easy to measure the temperature outside the circuit breaker housing. Taking the above into consideration, the present application directly adopts the form of a de-icing line to solve the limitation of the sensor when used in the circuit breaker housing, that is, to reduce the cost of use, and also reduce the difficulty of use and maintenance, thereby improving the adaptability of the circuit breaker for use in extreme weather.

[0009] By adopting the above technical solution, when the manual opening and closing lever is frozen and solidified due to extreme weather, it is not easy to drive the manual opening and closing lever to rotate only by the mechanism of the circuit breaker, so it is not easy to realize the opening and closing operation of the back-end equipment. At this time, through the provided deicing line, when the temperature at the circuit breaker housing is lower than the freezing point of water, the connecting piece connects the deicing line, and at this time, the two groups of deicing lines are connected and short-circuited. Since the deicing line will generate high heat during the short circuit, and the deicing line is wound around the rotating shaft, the heat of the deicing line heats the circuit breaker housing at the rotating shaft to perform local deicing;

[0010] At the same time, since there will be safety hazards if the de-icing line is short-circuited for a long time, the de-icing line is connected. At this time, since the adjusting part changes with the temperature, when the de-icing line short-circuit generates high heat, the adjusting part drives the protective block to slide, thereby separating the two contacts of the de-icing line, so that the two groups of de-icing lines remain disconnected, thereby keeping the de-icing line open, thereby reducing the safety hazards caused by the long-term short circuit of the de-icing line.

[0011] When there is always a layer of ice on the outer wall of the circuit breaker housing, the adjusting part decreases as the temperature of the circuit breaker housing decreases, thereby driving the protective block to slide and making the two contacts fit together, thereby disconnecting the de-icing line again, and de-icing is performed again until the ice layer on the outside of the circuit breaker housing at the shaft of the manual opening and closing lever melts and loosens. At this time, the temperature inside the circuit breaker housing is higher than the freezing point, so that the connector disconnects the de-icing line at this time, which is not easy to short-circuit, thereby improving the safety performance of the entire circuit breaker housing.

[0012] For the stability of circuit breakers during operation, circuit breakers are often located at high positions on high-voltage lines. In extreme weather, technicians need to climb up to de-ice, which is a very dangerous situation. Without de-icing, the manual opening and closing levers are not easy to turn. The de-icing line can be short-circuited and opened according to the changes in the external weather, thereby achieving the heating and de-icing operation of the circuit breaker housing. There is no need for technicians to make external adjustments, which improves the safety performance of the circuit breaker during use and the ability of the circuit breaker to deal with extreme weather.

[0013] Optionally, the connecting member includes a connecting box arranged in the shell, the connecting box containing a fixed volume of conductive liquid, the two groups of de-icing lines are respectively arranged on the opposite side walls of the connecting box, and a conductive plate is provided on the top of the connecting box in a lifting manner, the two ends of the conductive plate are respectively movable to connect with the two groups of de-icing lines, and the initial height of the conductive plate is lower than the height of the two groups of de-icing lines. When the conductive liquid in the de-icing line solidifies, the volume of the conductive liquid changes, and the conductive plate moves under the change of the volume of the conductive liquid until the two ends of the conductive plate are flush with the height of the two ends of the de-icing line, thereby realizing the connection of the two groups of de-icing lines with the conductive plate; at the same time, through the triggering of the two conditions of the connecting member and the adjusting member, the de-icing line is not easy to short-circuit under normal circumstances, thereby improving the safety and stability of the de-icing line.

[0014] By adopting the above technical solution, since the conductive liquid changes state with the temperature, when it changes from liquid to solid, the volume will change, so that the conductive plate is lifted up, so that the height of the conductive plate is raised to a position consistent with the height of the deicing line. At this time, the two sets of deicing lines are connected, so as to meet the working conditions of the deicing line, thereby realizing the deicing operation in extreme weather. At the same time, when the temperature is low, the conductive liquid is always solidified, and then the regulating member is connected to the deicing line under the influence of temperature, so as to realize the lifting of the circuit breaker housing. Temperature, and since the adjusting part is arranged on the de-icing line, the heating of the de-icing line heats up the shaft of the circuit breaker housing at the manual opening and closing switch, making it difficult for the shaft to ice up. At the same time, when the de-icing line is disconnected and the temperature rises, causing the temperature of the adjusting part to rise, the adjusting part drives the protective block to slide, thereby breaking the de-icing line until the adjusting part is cooled to under the influence of the ambient temperature. At this time, the de-icing line continues to be short-circuited, thereby realizing the periodic heating operation of the circuit breaker housing, making it difficult for ice to form on the outer peripheral wall of the circuit breaker housing, thereby improving the stability of the rotation of the shaft of the manual opening and closing lever.

[0015] Optionally, the adjusting member includes a clamping block arranged on the circuit breaker housing, the clamping block is hollow, the clamping block is arranged on one side of the protective block along the sliding direction, an adjustment hole is provided on the side of the clamping block close to the protective block, an adjustment block is provided in the clamping block, the adjustment block is made of rubber, a thermosensitive liquid is poured in the adjustment block, and the side of the adjustment block close to the protective block is movably pressed against the protective block.

[0016] By adopting the above technical solution, in extremely cold weather, the thermosensitive liquid is in liquid or solid state, and the regulating block made of rubber material is not easy to expand, thereby achieving stable contact between the two contacts and stable connection of the deicing line. At the same time, when the deicing line is heated in the case of a short circuit, the thermosensitive liquid is vaporized and the volume increases. At the same time, the volume of the regulating block made of rubber material expands, so that the regulating block is squeezed out from the regulating hole of the pressing block and pressed against the protective block, thereby achieving sliding of the protective block, so that the two contacts are separated and the deicing line is disconnected.

[0017] By providing dual protection of a rubber adjustment block and thermosensitive gas, incomplete contact separation caused by small volume changes of rubber can be reduced. The volume changes caused by temperature changes can be further enhanced by the thermosensitive gas, thereby improving the accuracy of sliding adjustment of the protective block.

[0018] Optionally, the thermosensitive liquid is one of ethanol, ether, acetone, and chloroform, and the conductive liquid is water.

[0019] By adopting the above technical scheme, the thermosensitive liquid is set to an organic liquid with a low boiling point and a low freezing point, and it always remains in a liquid state at room temperature. When the temperature of the deicing line rises, the thermosensitive liquid vaporizes as the temperature rises, and the volume of organic liquids such as ethanol, ether, acetone, chloroform, etc. changes significantly under the change of gas and liquid phases, thereby realizing volume adjustment of the adjustment block. When the deicing line is short-circuited, the increase in the deicing line temperature will bring about a temperature change of the organic liquid. Since the expansion coefficient of rubber and its trend characteristics of temperature change are smaller than the change trend of the protective block, the volume change of the adjustment block is intensified through the volume change of the organic solvent, so that after the deicing line is short-circuited, the sliding adjustment of the protective block as the temperature rises is more efficient, thereby reducing the short-circuit time of the deicing line, thereby reducing the safety hazards caused by the long-term short-circuit of the deicing line.

[0020] At the same time, the conductive liquid is set to conventional water, so that the de-icing operation on the circuit breaker housing and the manual opening and closing pull rod shaft is more accurate and more suitable for conventional working conditions used by the circuit breaker.

[0021] Optionally, a hammer is rotatably provided in the circuit breaker housing, one end of the hammer is in contact with the inner wall of the circuit breaker housing, a power part is provided at the rotating shaft of the hammer, the power part is electrically connected to the deicing line, and a switching part for enabling the hammer to switch the deicing line on and off is also provided in the circuit breaker housing.

[0022] By adopting the above technical scheme, since the efficiency of de-icing the outer shell of the circuit breaker by relying solely on the increase in temperature is relatively low, when the de-icing line is short-circuited, the power part drives the hammer to rotate, and when the de-icing line heats and melts the outer wall of the circuit breaker shell, the hammer strikes the ice layer on the outer shell of the circuit breaker. Therefore, under the dual operation of striking and thermal ice melting, the de-icing efficiency of the ice layer on the outer wall of the circuit breaker shell is improved, thereby reducing the solidification of the manual opening and closing lever shaft, and further improving the stability of the circuit breaker shell during use.

[0023] At the same time, the de-icing line is switched on and off by the provided on-off piece. When the hammer rotates to a position where it fits the inner wall of the circuit breaker housing, the hammer strikes the circuit breaker housing, and the on-off piece disconnects the de-icing line. At this time, the hammer automatically rotates without the action of a power source until the on-off piece connects the de-icing line, and the hammer again strikes the outer wall of the circuit breaker housing to de-ice under the action of the power piece.

[0024] Optionally, the switch includes an isolation plate slidably disposed in the circuit breaker housing, the isolation plate is made of non-conductive material, and the isolation plate is movably located between the two contacts, one end of the hammer is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the isolation plate.

[0025] By adopting the above technical solution, an isolation plate is set, and when the hammer rotates and strikes the circuit breaker housing driven by the power part, the isolation plate slides between the two contacts, thereby realizing the disconnection of the two contacts. As the de-icing line circuit is disconnected, the hammer rotates away from the circuit breaker housing without the drive of the power source. At this time, the isolation plate is separated from the two contacts, and the de-icing line power supply is connected. At this time, the de-icing line circuit is connected, and the hammer strikes the circuit breaker housing again under the drive of the power source. When de-icing is needed, the circuit breaker housing is periodically struck for de-icing until the conductive liquid melts. At this time, the de-icing circuit is disconnected, and no de-icing operation is required. The hammer is not easy to strike the circuit breaker housing without the action of the power source, thereby improving the stability of the entire circuit breaker housing.

[0026] Optionally, a secondary protection box is provided on the top of the connection box, and this protection box forms a sealed whole with the connection box, and the secondary protection box and the connection box are separated into two cavities by a conductive plate, and inert gas is stored in the secondary protection box, and the two cavities separated by the conductive plate are not connected to each other.

[0027] By adopting the above technical solution, since the entire protection phase and the connection box are a sealed whole, when the conductive plate slides as the volume of the conductive liquid changes, the inert gas in the protection box is compressed. When the conductive liquid is converted into a solid state, the concentration of the inert gas in the protection box is relatively large, thereby achieving stable protection between the conductive plate and the deicing line, and improving the stability of the connection between the deicing line and the conductive plate. At the same time, when the conductive liquid is converted into a liquid state, the inert gas in the protection box stably extinguishes the arc at the conductive plate and the deicing line, thereby improving the instantaneousness and efficiency of the disconnection between the conductive plate and the deicing line.

[0028] Optionally, the power component includes an electromagnet electrically connected to the deicing line and an adsorption component provided at one end of the hammer, and the electromagnet is magnetically connected to the adsorption component.

[0029] By adopting the above technical solution, the hammer is driven by an electromagnet. The electromagnet does not serve as a load on the de-icing line, and does not affect the normal heating of the de-icing line when it is short-circuited in extreme weather. The electromagnet has magnetic force when it is energized, and the magnetic force disappears when the power is off. The hammer is driven to rotate periodically, which reduces the loss of electric energy and saves costs. By setting the electromagnet, there is no need to set an additional power source in the circuit breaker housing, which further reduces the internal space of the fusion circuit breaker, thereby reducing the space occupied by the fusion circuit breaker and improving the adaptability of the circuit breaker.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. Through the deicing wire wound around the rotating shaft of the manual opening and closing lever, the connecting piece that switches the deicing wire on / off with temperature changes, and another set of adjusting pieces that switches the deicing wire on / off with temperature changes, when the circuit breaker encounters extreme cold weather during normal use, the connecting piece connects the deicing wire, and the adjusting piece also connects the deicing wire. At this time, the deicing wire is short-circuited, and high heat is generated under the action of instantaneous current, which heats the circuit breaker housing at the rotating shaft of the manual opening and closing lever, realizes the ice melting operation on the outside of the circuit breaker housing, reduces the safety accidents caused by the difficulty of the manual opening and closing lever to rotate in extreme weather, facilitates the circuit breaker to automatically realize the opening when encountering a fault, and facilitates the technicians to manually open the circuit during maintenance, improves the safety of the circuit breaker, and the entire ice melting operation does not require human control;

[0032] 2. Through the connection box, the conductive liquid in the connection box and the conductive plate slidably arranged in the connection box, when the conductive liquid changes state with the change of the external environment temperature, when the conductive liquid condenses into a solid state, the conductive plate slides with the volume change of the conductive liquid, thereby realizing the connection of the deicing line, and then realizing the short-circuit heating of the deicing line to heat the circuit breaker housing to melt ice;

[0033] 3. By providing an adjustment block made of rubber material and a thermosensitive liquid in the adjustment block, the volume of the adjustment block can be changed when the de-icing line is short-circuited and heated, and the protective block can be pressed tightly to disconnect the de-icing line, thereby reducing the short-circuit time of the de-icing line and improving the service life of the de-icing line. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of a sensor-integrated fusion circuit breaker according to an embodiment of the present application;

[0035] Figure 2 It is a schematic diagram of the connection structure of the protection components;

[0036] Figure 3 It is a schematic diagram of the connection structure of the de-icing component.

[0037] Figure numerals: 1. Circuit breaker housing; 11. Three-phase pole; 12. Operating mechanism; 121. Rotating rod; 13. Manual opening and closing pull rod; 2. Deicing assembly; 21. Deicing line; 22. Terminal; 23. Connecting piece; 231. Connection box; 232. Conductive plate; 233. Conductive liquid; 3. Protection assembly; 31. Protection block; 311. Contact; 32. Adjusting piece; 321. Tightening block; 322. Adjusting hole; 323. Adjusting block; 4. Hammer; 41. Power piece; 411. Electromagnet; 412. Adsorption piece; 42. Isolation plate; 421. Connecting rod; 43. Secondary protection box. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-3 This application is described in further detail.

[0039] The embodiment of the present application discloses a sensor-integrated fusion circuit breaker. Figure 1 The sensor integrated fusion circuit breaker includes a circuit breaker housing 1, in which a three-phase pole 11 is arranged, a voltage sensor arranged in the circuit breaker housing 1, and an operating mechanism 12 arranged in the circuit breaker housing 1. The operating mechanism 12 includes a rotating rod 121 rotatably arranged in the circuit breaker housing 1, one end of the rotating rod 121 penetrates the housing and is connected to a manual opening and closing pull rod 13, a torsion spring is arranged at the rotating shaft of the rotating rod 121, and three sets of crank arms are arranged on the rotating rod 121, and the rotating rod 121 1 is also provided with an operating rod connected to the isolation blade, and each phase pole is provided with a gate plate, which is connected to the moving contact 311 of the pole, that is, when the three-phase poles 11 are all closed, the rotating rod 121 rotates under the action of the torsion spring and the gate plate to realize the rotation operation of the isolation blade, and then realize the closing operation of the equipment end of the isolation blade pair, and when any phase pole is opened, the gate plate drives the crank arm to rotate, thereby driving the rotating rod 121 to rotate, driving the opening operation of the equipment end.

[0040] In extreme weather, the rotating shaft of the rotating rod 121 outside the circuit breaker housing 1 is easily frozen. At this time, it is difficult to drive the rotating rod 121 to rotate only by the rotation of the pole opening plate in the circuit breaker housing 1, which can easily affect the normal opening and closing of the circuit breaker. Therefore, the circuit breaker housing 1 is also provided with a deicing component 2 for deicing the rotating connection between the rotating rod 121 and the circuit breaker housing 1, and a protective component 3 arranged in the circuit breaker housing 1.

[0041] Reference Figure 1 and Figure 2 The de-icing assembly 2 includes a de-icing line 21 arranged in the circuit breaker housing 1 and an energy storage power supply arranged in the circuit breaker housing 1. Two groups of de-icing lines 21 are provided, and the two groups of de-icing lines 21 are connected to the energy storage power supply. The de-icing lines 21 are not electrically connected to the poles, so it is not easy to affect the normal closing and opening operations of the circuit breaker. One group of de-icing lines 21 is embedded in the circuit breaker housing 1 and is wound around the shaft of the rotating rod 121. A connecting piece 23 is also provided between the two groups of de-icing lines 21. The connecting piece 23 realizes the connection or disconnection of the two groups of de-icing lines 21 as the temperature changes.

[0042] Reference Figure 2, both groups of deicing wires 21 are provided with terminals 22, the terminals 22 are fixed on the inner wall of the circuit breaker housing 1, the connecting piece 23 includes a connection box 231 arranged between the two terminals 22, a conductive plate 232 is slidably arranged in the connection box 231, the two ends of the conductive plate 232 are respectively movably connected with the two terminals 22, and a conductive liquid 233 is contained in the connection box 231 at the bottom of the conductive plate 232. In this application, the conductive liquid 233 is water. At room temperature, the height of the conductive plate 232 is lower than the height of the two terminals 22, so that when the external ambient temperature is lower than 0 degrees, the conductive liquid 233 solidifies to produce a volume change, thereby moving the conductive plate 232 to The conductive plate 232 is lifted up, and the two groups of de-icing lines 21 are connected. At this time, a short circuit is realized between the two groups of de-icing lines 21 and the energy storage power supply. The high heat generated by the short circuit heats the inner wall of the circuit breaker housing 1, reduces the solidification of the ice layer, and thus facilitates the rotation of the shaft. Here, it is only necessary to melt the ice at the shaft of the rotating rod 121 to realize the normal rotation of the rotating rod 121. At this time, the connecting box 231 is fixed on the inner wall of the circuit breaker housing 1. When the temperature on the de-icing line 21 melts the conductive liquid 233 in the connecting box 231, the conductive plate 232 is disconnected from the terminal 22, reducing the safety hazard of long-term short circuit of the de-icing line 21.

[0043] At the same time, since it takes time for the ice in the connection box 231 to melt, in order to avoid the de-icing line 21 from being short-circuited for a long time and to further improve the safety of the de-icing line 21, two contacts 311 are further provided in the middle position of the de-icing line 21. The two contacts 311 are movably fitted together, and only when the two contacts 311 are fitted together and the conductive plate 232 is connected to the terminal 22, the de-icing line 21 forms a complete circuit. The protection component 3 includes a protection block 31 fixedly connected to a contact 311 and an adjustment member 32 for slidingly adjusting the protection block 31. The adjustment member 32 drives the protection block 31 to slide as the temperature of the de-icing line 21 changes, that is, when the temperature of the de-icing line 21 increases, the protection block 31 slides to a position where the two contacts 311 are separated, thereby realizing a short circuit of the de-icing line 21, and when the temperature of the de-icing line 21 decreases due to the influence of the external temperature, the adjustment member 32 drives the protection block 31 to slide to a position where the two contacts 311 are fitted together.

[0044] Reference Figure 2 and Figure 3The adjusting member 32 includes a pressing block 321 fixed on the circuit breaker housing 1, the deicing line 21 runs through the pressing block 321, the protective block 31 is arranged on one side of the pressing block 321, and the pressing block 321 is provided with an adjusting hole 322 on the side close to the protective block 31, the pressing block 321 is arranged hollow, and an adjusting block 323 is arranged inside the pressing block 321. In the present application, the adjusting block 323 is made of rubber, the adjusting block 323 is annularly wound around the deicing line 21, and the adjusting block 323 is hollow, and the adjusting block 323 is filled with a thermosensitive liquid, and the thermosensitive liquid in the present application is ethanol, ether, acetone, One of chloroform, etc., such liquids have low freezing point and boiling point, and the volume multiples between the gas phase and the liquid phase of such liquids differ greatly. The thermosensitive liquid cooperates with the regulating block 323, thereby further promoting the insignificant volume change of the rubber material. In the present application, the regulating block 323 is made of Teflon material to reduce the probability of reaction with the thermosensitive liquid. In other embodiments, other non-reactive rubber materials can also be used according to the choice of the thermosensitive liquid.

[0045] That is, when the de-icing line 21 short-circuits and generates heat to process the circuit breaker housing 1, the de-icing line 21 generates heat to heat the adjustment block 323 and the thermosensitive liquid. At this time, the thermosensitive liquid has a low boiling point and a significant vaporization effect, thereby pressing against the adjustment block 323 to change its volume, so that the adjustment block 323 is squeezed out of the adjustment hole 322 and fits tightly against the protective block 31, pressing against the sliding of the protective block 31 to separate the two contacts 311, thereby breaking the de-icing line 21 and reducing the safety hazards caused by the long-term short circuit of the de-icing line 21.

[0046] At the same time, in order to further improve the ice melting operation of the ice layer on the outer wall of the circuit breaker housing 1, a hammer 4 is rotatably arranged in the circuit breaker housing 1, and one end of the hammer 4 is tightly fitted against the inner wall of the circuit breaker housing 1. A power member 41 is provided in the circuit breaker housing 1 to adjust the rotation of the hammer 4 without affecting the short-circuit heating of the deicing line 21. In the present application, the power member 41 is an electromagnet 411 electrically connected to the deicing line 21, and an adsorption member 412 is provided at one end of the hammer 4. The electromagnet 411 and the adsorption member 412 are connected to the deicing line 21. The accessory 412 is magnetically connected, and a spring is provided at the other end of the hammer 4. The spring drives the hammer 4 to always fit tightly against the inner wall of the circuit breaker housing 1. When the deicing line 21 is short-circuited, the electromagnet 411 is energized to generate magnetic force to magnetically attract the adsorption part 412, and the hammer 4 rotates to a position away from the inner wall of the circuit breaker housing 1. When the deicing line 21 is short-circuited, the hammer 4 knocks on the circuit breaker housing 1 under the elastic force of the spring, and heating and knocking are carried out simultaneously, thereby improving the ice melting efficiency.

[0047] Since the regulating block 323, whether it is water, a heat-sensitive liquid or a rubber material, changes in volume slowly as the temperature of the de-icing line 21 changes, in order to further shorten the short-circuit time of the de-icing line 21 and improve the de-icing efficiency of the hammer 4, the hammer 4 is also provided with a switch, and the switch includes a connecting rod 421 rotatably connected to the other end of the hammer 4, and an isolation plate 42 is provided at the end of the connecting rod 421 away from the rotational connection with the hammer 4. In the present application, the isolation plate 42 is made of insulating material, and the isolation plate 42 is slidably arranged in the circuit breaker housing 1, and the isolation plate 42 is movably located between the two contacts 311, that is, when the de-icing line 21 is short-circuited, the electromagnet 411 drives the hammer 4 to rotate, and at this time, one end of the hammer 4 is away from the circuit breaker housing 1 The hammer 4 rotates to the inner wall of the circuit breaker housing 1, and the connecting rod 421 rotates during the rotation of the hammer 4, thereby driving the isolation plate 42 to slide between the two contacts 311. At this time, the deicing line 21 is disconnected, and the electromagnet 411 is powered off. The hammer 4 rotates to the inner wall of the circuit breaker housing 1 under the elastic restoring force of the spring. At this time, the isolation plate 42 just slides to a position separated from the two contacts 311. At this time, the deicing line 21 continues to be short-circuited, thereby forming a reciprocating knocking of the hammer 4 on the inner wall of the circuit breaker housing 1. Within one heating cycle, multiple knocks are achieved on the circuit breaker housing 1, which is convenient for the subsequent deicing line 21 to heat the circuit breaker housing 1, and the ice layer automatically falls off the circuit breaker housing 1, thereby improving the deicing efficiency of the circuit breaker housing 1.

[0048] Furthermore, in order to reduce the maintenance cycle of the liquid in the connection box 231, a secondary protection box 43 is provided on the top of the connection box 231, and the secondary protection box 43 and the connection box 231 are enclosed into a sealed whole, and the connection between the deicing line 21 and the connection box 231 is also sealed and fixed by spot welding. The secondary protection box 43 and the connection box 231 are separated into two cavities by a conductive plate 232, and a conductive liquid 233 is stored in the bottom cavity, and an inert gas is stored in the top cavity. The inert gas in this application is SF6, and the conductive plate 232 changes with the volume of the conductive liquid 233. Therefore, during the sliding process, the inert gas in the protection box is compressed. When the conductive liquid 233 is converted into a solid state, the concentration of the inert gas in the protection box is relatively large, thereby achieving stable protection between the conductive plate 232 and the deicing line 21, and improving the stability of the connection between the deicing line 21 and the conductive plate 232. At the same time, during the process of the conductive liquid 233 being converted into a liquid state, the inert gas in the protection box performs stable arc extinguishing on the conductive plate 232 and the deicing line 21, and improving the instantaneousness and efficiency of the disconnection between the conductive plate 232 and the deicing line 21.

[0049] The implementation principle of a sensor-integrated fusion circuit breaker in an embodiment of the present application is as follows: when the circuit breaker encounters extreme weather and ice forms at the rotating shaft, the conductive liquid 233 in the connection box 231 solidifies as the temperature of the external environment changes, and the conductive plate 232 is pushed to slide under the change in the volume of the conductive liquid 233, so that the conductive plate 232 is in contact with the two terminal terminals 22, and the de-icing line 21 is short-circuited. At this time, the short-circuited de-icing line 21 generates high heat, and the inner wall of the circuit breaker at the rotating shaft of the rotating rod 121 is heated to de-ice;

[0050] At the same time, in extreme weather, the thermosensitive liquid is in liquid or solid state, and the two contacts 311 are in contact with each other, thereby realizing the short circuit of the de-icing line 21. When the de-icing line 21 is short-circuited and generates high heat, the conductive liquid 233 is converted from solid and liquid to gas, resulting in a volume change. At the same time, the rubber adjustment block 323 produces a volume change under the heating effect of the de-icing line 21. The dual volume changes of the thermosensitive liquid and the adjustment block 323 press against the protective block 31 to slide, thereby separating the two contacts 311 and realizing the disconnection of the de-icing line 21, thereby reducing the safety hazards caused by the long-term short circuit of the de-icing line 21.

[0051] At the same time, when the de-icing line 21 is short-circuited, the electromagnet 411 is energized, and the hammer 4 rotates under the action of the electromagnet 411 and the adsorption member 412 until the isolation plate 42 slides between the two contacts 311. At this time, the de-icing line 21 is disconnected, the electromagnet 411 is de-energized, and the hammer 4 strikes the circuit breaker housing 1 under the action of the elastic restoring force of the spring, thereby de-icing the circuit breaker housing 1 through the short circuit of the de-icing line 21 and the striking of the hammer 4, thereby improving the stability of the circuit breaker in extreme weather conditions.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sensor-integrated fusion circuit breaker, comprising a circuit breaker housing (1), a three-phase pole (11) arranged on the circuit breaker housing (1), an operating mechanism (12) arranged in the circuit breaker housing (1) for opening and closing the three-phase pole (11), and a manual opening and closing pull rod (13) arranged outside the circuit breaker housing (1), wherein the operating mechanism (12) comprises a rotating rod (121) rotatably arranged in the circuit breaker housing (1), and the rotating rod (121) is connected to the manual opening and closing pull rod (13), characterized in that: The circuit breaker housing (1) is also provided with a deicing component (2) for deicing the connection between the manual opening and closing pull rod (13) and the circuit breaker housing (1), and a protection component (3) provided in the circuit breaker housing (1); The deicing assembly (2) comprises a deicing wire (21) embedded and fixed on the inner wall of the circuit breaker housing (1) and an energy storage power supply arranged in the circuit breaker housing (1); the deicing wire (21) is wound around the inner wall of the circuit breaker housing (1) at the rotating shaft of the manual opening and closing pull rod (13); two groups of deicing wires (21) are provided, both groups of deicing wires (21) are connected to the energy storage power supply, and a connecting piece (23) is provided between the two groups of deicing wires (21); when the temperature is lower than the freezing point of water, the connecting piece (23) connects the two groups of deicing wires (21), and the two groups of deicing wires (21) generate instantaneous current, generating high heat to melt the ice layer outside the circuit breaker housing (1); Two contacts (311) are provided on a group of the deicing wires (21), and the two contacts (311) are movably fitted together. When the two contacts (311) are fitted together, the two groups of the deicing wires (21) are short-circuited. The protection assembly (3) comprises a protection block (31) slidably disposed in the circuit breaker housing (1) and an adjusting member (32) for slidingly adjusting the protection block (31); the protection block (31) is connected to the contact (311); the adjusting member (32) performs sliding adjustment on the protection block (31) as the temperature changes; and when the temperature of the deicing line (21) increases, the adjusting member (32) drives the protection block (31) to slide so that the two contacts (311) are disconnected, thereby realizing the disconnection of the deicing line (21).

2. The sensor-integrated fusion circuit breaker according to claim 1, characterized in that: The connecting member (23) comprises a connection box (231) disposed in the shell, wherein a fixed volume of conductive liquid (233) is contained in the connection box (231), and two groups of deicing lines (21) are respectively disposed on opposite side walls of the connection box (231). A conductive plate (232) is provided on the top of the connection box (231) in a lifting manner, and two ends of the conductive plate (232) are respectively movable to connect with the two groups of deicing lines (21), and an initial height of the conductive plate (232) is lower than the height of the two groups of deicing lines (21). When the conductive liquid (233) in the deicing lines (21) solidifies, the volume of the conductive liquid (233) changes, and the conductive plate (232) moves under the change in the volume of the conductive liquid (233) until the two ends of the conductive plate (232) are flush with the height of the two ends of the deicing lines (21), thereby achieving connection of the two groups of deicing lines (21) by the conductive plate (232).

3. The sensor-integrated fusion circuit breaker according to claim 2, characterized in that: The adjusting member (32) comprises a pressing block (321) arranged on the circuit breaker housing (1); the pressing block (321) is arranged hollow; the pressing block (321) is arranged on one side of the protection block (31) along the sliding direction; an adjusting hole (322) is provided on a side of the pressing block (321) close to the protection block (31); an adjusting block (323) is provided inside the pressing block (321); the adjusting block (323) is made of rubber; a thermosensitive liquid is poured into the adjusting block (323); and a side of the adjusting block (323) close to the protection block (31) is movably pressed against the protection block (31).

4. The sensor-integrated fusion circuit breaker according to claim 3, characterized in that: The thermosensitive liquid is one of ethanol, ether, acetone and chloroform, and the conductive liquid (233) is water.

5. The sensor-integrated fusion circuit breaker according to claim 4, characterized in that: A hammer (4) is rotatably provided in the circuit breaker housing (1), one end of the hammer (4) is in contact with the inner wall of the circuit breaker housing (1), a power part (41) is provided at the rotating shaft of the hammer (4), the power part (41) is electrically connected to the deicing line (21), and a switching part for enabling the hammer (4) to switch the deicing line (21) is also provided in the circuit breaker housing (1).

6. The sensor-integrated fusion circuit breaker according to claim 5, characterized in that: The switch member comprises an isolation plate (42) slidably arranged in the circuit breaker housing (1); the isolation plate (42) is made of a non-conductive material and is movably located between the two contacts (311); one end of the hammer (4) is rotatably connected to a connecting rod (421), and the other end of the connecting rod (421) is rotatably connected to the isolation plate (42).

7. The sensor-integrated fusion circuit breaker according to claim 6, characterized in that: A secondary protection box is provided on the top of the connection box (231), and the protection box and the connection box (231) form a sealed whole, and the secondary protection box and the connection box (231) are separated into two cavities by a conductive plate (232), and inert gas is stored in the secondary protection box, and the two cavities separated by the conductive plate (232) are not connected to each other.

8. The sensor-integrated fusion circuit breaker according to claim 6, characterized in that: The power member (41) comprises an electromagnet (411) electrically connected to the deicing line (21) and an adsorption member (412) provided at one end of the hammer (4), and the electromagnet (411) is magnetically connected to the adsorption member (412).

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