Temperature control device for circuit breaker

Abstract

The application discloses a temperature control device for a circuit breaker and relates to the technical field of temperature control devices.The temperature control device comprises a mounting frame and a liquid storage tank, and a cooling assembly is arranged on the front side of the mounting frame.The cooling assembly comprises T-shaped blocks, a fixing cylinder, cooling pipes and L-shaped movable pipes.The two T-shaped blocks are symmetrically arranged on the two sides of the mounting frame.The one end of the L-shaped movable pipe is fixedly arranged on the T-shaped block, and the other end of the L-shaped movable pipe is fixedly provided with a rubber ring on the outer side wall.The rubber ring is gap-fitted in the fixing cylinder, and the closed end of the fixing cylinder is also provided with L-shaped connecting pipes in communication.The multiple cooling pipes are coaxially arranged between the two L-shaped connecting pipes.The side wall of the cooling pipe is provided with multiple air outlets which are arranged in the axial direction.The outer side wall of the cooling pipe above the air outlet is fixedly provided with an infrared temperature measuring strip in the axial direction.The application can efficiently and quickly position and cool the circuit breaker, prolong the service life of the circuit breaker, and be applicable to circuit breakers of different sizes, and has good practicability.

Description

Technical Field

[0001] This invention belongs to the technical field of temperature control devices, and in particular relates to a temperature control device for circuit breakers. Background Technology

[0002] A circuit breaker is a basic low-voltage electrical appliance. It provides overload, short-circuit, and undervoltage protection, protecting circuits and power supplies. During operation, the circuit breaker generates heat due to the resistance of the connecting terminals and the heat generated by the equipment itself. Excessive heat can easily damage the circuit breaker. Although existing circuit breakers have cooling functions (such as oil cooling in oil circuit breakers), current temperature control devices still have the following shortcomings in practical use:

[0003] 1. Existing circuit breaker temperature control devices have poor cooling effects and cannot provide targeted and rapid cooling based on the actual cooling distribution of the circuit breaker, resulting in poor overall practicality.

[0004] 2. Existing circuit breaker temperature control devices cannot be adaptively adjusted according to the size of the circuit breaker during use, thus making them unsuitable for use with different circuit breakers;

[0005] Therefore, it is necessary to improve the existing technology to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a temperature control device for circuit breakers that has good cooling effect, strong targeting, and can be adjusted according to different sizes of circuit breakers, thus solving the problems of poor cooling effect and inability to adapt to the size of circuit breaker in actual use of temperature control devices for circuit breakers.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0008] This invention relates to a temperature control device for circuit breakers, comprising a mounting frame and a liquid storage tank. A cooling component is provided on the front side of the mounting frame. The cooling component includes a T-shaped block, a fixed cylinder, a cooling tube, and an L-shaped movable tube. Two T-shaped blocks are symmetrically arranged on both sides of the mounting frame. One end of the L-shaped movable tube is fixed to the T-shaped block, and a rubber ring is fixed to the outer wall of the other end of the L-shaped movable tube. The rubber ring is loosely fitted in the fixed cylinder. An L-shaped connecting tube is also connected to the closed end of the fixed cylinder. Multiple cooling tubes are arranged coaxially between the two L-shaped connecting tubes.

[0009] Multiple air vents are arrayed along the axial direction on the side wall of the cooling tube, and an infrared temperature measuring strip is fixed along the axial direction on the outer side wall of the cooling tube above the air vents.

[0010] The left and right sides of the mounting frame are vertically provided with sliding grooves for clearance fit of the T-shaped blocks. A screw rod that is helically engaged with the T-shaped block is slidably sleeved in one of the sliding grooves. The lower end of the screw rod extends to the bottom of the mounting frame and is embedded in the output end of the motor. At the same time, the upper end of the screw rod extends to the top of the mounting frame and is fixedly connected to the limiting plate. The motor is fixedly connected to the bottom surface of the mounting frame.

[0011] Furthermore, a first threaded sleeve is fixed at one end of the cooling tube, while a first internal thread is formed on the inner wall of the other end of the cooling tube;

[0012] A second threaded sleeve is fixed on the free end of one of the L-shaped connecting pipes, and a second internal thread is formed on the inner wall of the free end of the other L-shaped connecting pipe.

[0013] The first threaded sleeve is helically engaged with the adjacent first internal thread and / or second internal thread, and the second threaded sleeve is helically engaged with the adjacent first internal thread.

[0014] Furthermore, an oil seal groove is provided along the axis on the side wall of the rubber ring.

[0015] Furthermore, a first locking bolt is screwed onto the side wall of the fixed cylinder at the end away from the L-shaped connecting pipe, and one end of the first locking bolt abuts against the side wall of the L-shaped movable pipe.

[0016] Furthermore, a guide rod is provided in another sliding groove relative to the screw rod. The guide rod is slidably sleeved in the T-shaped block, and the two ends of the guide rod are respectively fixed to the inner walls of the upper and lower ends of the sliding groove.

[0017] Furthermore, an air inlet sleeve is fixed on the bottom surface of one of the T-shaped blocks, and both the air inlet sleeve and the L-shaped movable tube are connected to the flow cavity inside the T-shaped block.

[0018] The air inlet sleeve and the air outlet sleeve on the liquid storage tank are connected by a hose, and a solenoid valve is installed on the hose.

[0019] Furthermore, a first mounting plate is provided at the rear end of both sides of the liquid storage tank, and a first mounting hole is provided on the first mounting plate.

[0020] Furthermore, a second mounting plate is fixed to the front side of the inner wall on both the left and right sides of the mounting frame, and a second mounting hole is opened on the second mounting plate. A third mounting hole is opened at each of the four corners of the mounting frame.

[0021] Furthermore, the mounting frame is composed of a first U-shaped frame and a second U-shaped frame, which are separated on the left and right sides. Both ends of the second U-shaped frame are integrally formed with insertion rods, and the two symmetrical rods of the first U-shaped frame are provided with slots for sliding insertion of the insertion rods.

[0022] The two symmetrical rods of the first U-shaped frame are each screwed with a second locking bolt on the outer wall of the free end, and one end of the second locking bolt abuts against the side wall of the insertion rod.

[0023] The present invention has the following beneficial effects:

[0024] 1. In use, this invention controls the motor to operate. When the motor drives the screw rod to rotate in both directions, the screw rod and the T-shaped block move vertically through a helical engagement. This allows the cooling component to move vertically on the outside of the circuit breaker. During the movement of the cooling component, an infrared temperature measuring strip on the outside of the cooling tube detects the temperature of the circuit breaker. When an overheating is detected in a certain part of the circuit breaker, the motor drives the cooling component to move to that position. The controller then controls the solenoid valve to open, and the liquid gas in the storage tank is ejected and sprayed onto the circuit breaker through the vent on the cooling tube. This achieves rapid cooling of the overheated area, resulting in a good overall cooling effect and effectively reducing the safety hazards of the circuit breaker.

[0025] 2. In use, the insertion rod is fitted into the slot, and the size of the mounting frame can be adjusted by tightening the second locking bolt to accommodate circuit breakers of different sizes. The L-shaped movable tube slides into the fixed cylinder, and the cooling components can be adjusted according to the thickness of the circuit breaker by tightening the first locking bolt. The multiple cooling tubes can be adjusted according to the width of the circuit breaker. Through the above settings, this device can be adapted to different circuit breaker sizes, and has good overall practicality. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the overall structure of a temperature control device for circuit breakers;

[0028] Figure 2 for Figure 1 Left view of the structure;

[0029] Figure 3 for Figure 1 A cross-sectional view of the structure in the horizontal direction;

[0030] Figure 4 This is a schematic diagram of the overall structure of the cooling component;

[0031] Figure 5 This is a schematic diagram showing the fit between the fixed cylinder and the L-shaped movable tube;

[0032] Figure 6 The drawing shows the components to be fitted together: a fixed cylinder and an L-shaped movable tube.

[0033] Figure 7 This is a schematic diagram of the overall structure of the cooling pipe;

[0034] Figure 8 This is a diagram showing the assembly of the mounting frame.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1. Mounting frame; 2. Cooling assembly; 3. Liquid storage tank; 4. Hoses; 5. Screw rod; 101. Sliding groove; 102. Second mounting plate; 103. Third mounting hole; 104. First U-shaped bracket; 105. Second U-shaped bracket; 201. T-block; 202. Fixing cylinder; 203. Cooling tube; 204. L-shaped movable tube; 301. First mounting plate; 401. Solenoid valve; 501. Limiting plate; 502. Motor; 1011. Guide rod ; 1021, Second mounting hole; 1041, Slot; 1042, Second locking bolt; 1051, Insert rod; 2011, Air inlet sleeve; 2021, L-shaped connecting pipe; 2022, Second internal thread; 2023, First locking bolt; 2031, First threaded sleeve; 2032, First internal thread; 2033, Infrared temperature measuring strip; 2034, Air outlet; 2041, Rubber ring; 2042, Oil seal groove; 3011, First mounting hole. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0038] Please see Figures 1 to 2 As shown, the present invention is a temperature control device for a circuit breaker, including a mounting frame 1 and a liquid storage tank 3. The liquid storage tank 3 stores a non-flammable liquid gas, and the circuit breaker is cooled by the vaporization of the non-flammable gas. A cooling component 2 is provided on the front side of the mounting frame 1. A first mounting plate 301 is provided at the rear end of both sides of the liquid storage tank 3. A first mounting hole 3011 is provided on the first mounting plate 301 to facilitate the fixed installation of the liquid storage tank 3. A second mounting plate 102 is fixed on the front side of the inner wall of both the left and right sides of the mounting frame 1. A second mounting hole 1021 is provided on the second mounting plate 102 to facilitate the fixed connection between the circuit breaker and the mounting frame 1. A third mounting hole 103 is provided at each of the four corners of the mounting frame 1 to facilitate the fixed installation of the mounting frame 1.

[0039] In actual use, the operator places the circuit breaker between the mounting frame 1 and the cooling component 2, and fixes the circuit breaker and the mounting frame 1 through the second mounting hole 1021. Finally, the operator installs the mounting frame 1 and the liquid storage tank 3 in the electrical box.

[0040] Please see Figures 3 to 7 As shown, the cooling component 2 includes a T-shaped block 201, a fixed cylinder 202, a cooling tube 203, and an L-shaped movable tube 204. Two T-shaped blocks 201 are symmetrically arranged on both sides of the mounting frame 1. One end of the L-shaped movable tube 204 is fixed to the T-shaped block 201, while a rubber ring 2041 is fixed to the outer wall of the other end of the L-shaped movable tube 204. The rubber ring 2041 is fitted into the fixed cylinder 202 with a clearance fit. An oil seal groove 2042 is formed along the axis on the side wall of the rubber ring 2041. The oil seal groove 2042 is filled with sealing oil to achieve a tight seal between the rubber ring 2041 and the fixed cylinder 202. The closed end of the fixed cylinder 202... An L-shaped connecting pipe 2021 is also provided. A first locking bolt 2023 is screwed onto the side wall of the fixed cylinder 202 away from the L-shaped connecting pipe 2021, and one end of the first locking bolt 2023 abuts against the side wall of the L-shaped movable pipe 204. In use, the distance between the fixed cylinder 202 and the L-shaped movable pipe 204 can be adjusted by sliding the rubber ring 2041 in the fixed cylinder 202 to suit circuit breakers of different widths. After adjustment, the first locking bolt 2023 is tightened. Multiple cooling pipes 203 are coaxially arrayed between the two L-shaped connecting pipes 2021.

[0041] One end of the cooling pipe 203 is fixedly provided with a first threaded sleeve 2031, and the inner wall of the other end of the cooling pipe 203 is provided with a first internal thread 2032; a second threaded sleeve is fixedly provided on the free end of one of the L-shaped connecting pipes 2021, and a second internal thread 2022 is provided on the inner wall of the free end of the other L-shaped connecting pipe 2021; the first threaded sleeve 2031 is screwed into the adjacent first internal thread 2032 and / or the second internal thread 2022, and the second threaded sleeve is screwed into the adjacent first internal thread 2032. Through the above arrangement, the connection between adjacent cooling pipes 203 and between cooling pipes 203 and L-shaped connecting pipes 2021 can be realized, thereby realizing the adjustment of the number of cooling pipes 203 according to the width of the circuit breaker;

[0042] Multiple air outlets 2034 are arranged in an array along the axial direction on the side wall of the cooling tube 203. The air outlets 2034 are used for the ejection of liquid gas. An infrared temperature measuring strip 2033 is fixed on the outer side wall of the cooling tube 203 above the air outlets 2034 along the axial direction. The infrared temperature measuring strip 2033 is used for monitoring the temperature of the circuit breaker.

[0043] The left and right sides of the mounting frame 1 are provided with sliding grooves 101 in the vertical direction for clearance fit of T-shaped blocks 201, so as to guide the movement of T-shaped blocks 201. A screw rod 5 that is helically fitted with T-shaped blocks 201 is slidably sleeved in one of the sliding grooves 101. The lower end of the screw rod 5 extends to the lower part of the mounting frame 1 and is embedded in the output end of the motor 502. At the same time, the upper end of the screw rod 5 extends to the upper part of the mounting frame 1 and is fixedly connected to the limiting plate 501, thereby limiting the upper end of the screw rod 5. The motor 502 is fixedly connected to the bottom surface of the mounting frame 1.

[0044] A guide rod 1011 is provided in another sliding groove 101 relative to the screw rod 5. The guide rod 1011 is slidably sleeved in the T-shaped block 201, and the two ends of the guide rod 1011 are respectively fixed on the upper and lower inner walls of the sliding groove 101 to realize the limiting guidance of the T-shaped block 201 when it moves.

[0045] An air inlet sleeve 2011 is fixed on the bottom surface of one of the T-shaped blocks 201, and both the air inlet sleeve 2011 and the L-shaped movable tube 204 are connected to the flow cavity inside the T-shaped block 201.

[0046] The air inlet sleeve 2011 and the air outlet sleeve on the liquid storage tank 3 are connected by a hose 4, and a solenoid valve 401 is installed on the hose 4 to realize the opening and closing of the hose 4.

[0047] In actual use, this device is also equipped with a controller for automated control of the electrical components. During use, the controller uses a timer to enable the motor 502 to operate on a timer basis, thereby enabling the screw rod 5 to rotate in both directions. Under this rotation, the T-block 201 moves up and down in the sliding groove 101, thus enabling the cooling component 2 to move vertically. When the cooling component 2 moves up and down, the infrared temperature measuring strip 2033 detects the temperature distribution of the circuit breaker. When it detects that the temperature in a certain area of ​​the circuit breaker is too high, the controller will control the cooling component 2 to move to that position. At the same time, the controller controls the solenoid valve 401 to open, and the liquid gas in the storage tank 3 is transported through the hose 4 and finally sprayed out from the vent 2034 on the cooling pipe 203.

[0048] Please see Figure 8 As shown, the mounting frame 1 is composed of a first U-shaped frame 104 and a second U-shaped frame 105, which are separated on the left and right sides. Both ends of the second U-shaped frame 105 are integrally formed with insertion rods 1051. The two symmetrical rods of the first U-shaped frame 104 are provided with slots 1041 for sliding insertion of the insertion rods 1051.

[0049] The two symmetrical rods of the first U-shaped frame 104 are each screwed with a second locking bolt 1042 on the outer wall of the free end, and one end of the second locking bolt 1042 abuts against the side wall of the insertion rod 1051.

[0050] When in use, the mounting frame 1 can be adjusted according to the size of the circuit breaker by moving the first U-shaped frame 104 and the second U-shaped frame 105 relative to each other. After the adjustment is completed, the operator can tighten the second locking bolt 1042.

[0051] The above are merely preferred embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present invention.

Claims

1. A temperature control device for a circuit breaker, comprising a mounting frame (1) and a liquid storage tank (3), characterized in that: A cooling component (2) is provided on the front side of the mounting frame (1). The cooling component (2) includes a T-shaped block (201), a fixed cylinder (202), a cooling tube (203), and an L-shaped movable tube (204). The two T-shaped blocks (201) are symmetrically arranged on both sides of the mounting frame (1). One end of the L-shaped movable tube (204) is fixed on the T-shaped block (201), and a rubber ring (2041) is fixed on the outer wall of the other end of the L-shaped movable tube (204). The rubber ring (2041) is fitted with a gap in the fixed cylinder (202). An L-shaped connecting tube (2021) is also connected to the closed end of the fixed cylinder (202). Multiple cooling tubes (203) are arranged coaxially between the two L-shaped connecting tubes (2021). Multiple air vents (2034) are arranged in an array along the axial direction on the side wall of the cooling tube (203), and an infrared temperature measuring strip (2033) is fixed on the outer side wall of the cooling tube (203) above the air vents (2034) along the axial direction. The left and right sides of the mounting frame (1) are provided with sliding grooves (101) for clearance fit of T-shaped blocks (201) in the vertical direction. A screw rod (5) that is helically fitted with T-shaped blocks (201) is slidably sleeved in one of the sliding grooves (101). The lower end of the screw rod (5) extends to the bottom of the mounting frame (1) and is embedded in the output end of the motor (502). At the same time, the upper end of the screw rod (5) extends to the top of the mounting frame (1) and is fixedly connected to the limiting plate (501). The motor (502) is fixedly connected to the bottom surface of the mounting frame (1).

2. The temperature control device for a circuit breaker as described in claim 1, characterized in that: One end of the cooling tube (203) is fixed with a first threaded sleeve (2031), and the other end of the cooling tube (203) is provided with a first internal thread (2032). A second threaded sleeve is fixed on the free end of one of the L-shaped connecting pipes (2021), and a second internal thread (2022) is provided on the inner wall of the free end of the other L-shaped connecting pipe (2021). The first threaded sleeve (2031) is helically engaged with the adjacent first internal thread (2032) and / or the second internal thread (2022), and the second threaded sleeve is helically engaged with the adjacent first internal thread (2032).

3. The temperature control device for a circuit breaker as described in claim 2, characterized in that: An oil seal groove (2042) is provided on the side wall of the rubber ring (2041) along the axis.

4. The temperature control device for a circuit breaker as described in claim 3, characterized in that: The fixed cylinder (202) has a first locking bolt (2023) screwed on the side wall of the end away from the L-shaped connecting pipe (2021), and one end of the first locking bolt (2023) abuts against the side wall of the L-shaped movable pipe (204).

5. The temperature control device for a circuit breaker as described in claim 1, characterized in that: A guide rod (1011) is provided in another sliding groove (101) relative to the screw rod (5). The guide rod (1011) is slidably sleeved in the T-shaped block (201), and the two ends of the guide rod (1011) are respectively fixed on the inner walls of the upper and lower ends of the sliding groove (101).

6. A temperature control device for a circuit breaker as described in claim 1, 4, or 5, characterized in that: An air inlet sleeve (2011) is fixed on the bottom surface of one of the T-shaped blocks (201), and both the air inlet sleeve (2011) and the L-shaped movable tube (204) are connected to the flow cavity inside the T-shaped block (201); The air inlet sleeve (2011) and the air outlet sleeve on the liquid storage tank (3) are connected by a hose (4), and a solenoid valve (401) is installed on the hose (4).

7. A temperature control device for a circuit breaker as described in claim 6, characterized in that: The liquid storage tank (3) has a first mounting plate (301) at the rear end of both sides, and a first mounting hole (3011) is provided on the first mounting plate (301).

8. The temperature control device for a circuit breaker as described in claim 7, characterized in that: The mounting frame (1) has a second mounting plate (102) fixed on the front side of the inner wall on both the left and right sides. The second mounting plate (102) has a second mounting hole (1021). The mounting frame (1) has a third mounting hole (103) at each of the four corners.

9. A temperature control device for a circuit breaker as described in claim 1, 4, 5, or 8, characterized in that: The mounting frame (1) is composed of a first U-shaped frame (104) and a second U-shaped frame (105) separated on the left and right sides. Both ends of the second U-shaped frame (105) are integrally formed with insert rods (1051). The two symmetrical rods of the first U-shaped frame (104) are provided with slots (1041) for sliding insertion of the insert rods (1051). The two symmetrical rods of the first U-shaped frame (104) are each screwed with a second locking bolt (1042) on the outer side wall of the free end, and one end of the second locking bolt (1042) abuts against the side wall of the insert rod (1051).

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