Combined micro-current transformer

Abstract

The invention discloses a combined micro-current transformer which comprises a shell, a mounting groove is formed in the upper end of the shell, a plurality of transformer bodies are mounted at the inner bottom of the mounting groove, and a sealing cover is mounted at the upper end of the shell; the heat dissipation mechanism comprises a plurality of heat dissipation fins arranged on the sealing cover in a penetrating mode, and the lower ends of the multiple heat dissipation fins all extend into the mounting groove; the liquid flowing mechanism comprises a mounting frame mounted at the lower end of the shell, a motor is mounted on the mounting frame, an output shaft of the motor is fixedly connected with a rotating disc, a columnar groove is formed in the lower end of the shell, and a first piston plate capable of sliding up and down is arranged in the columnar groove. When the current transformer is used, heat dissipation is carried out in an internal oil body flowing heat dissipation mode, on the basis that the heat dissipation effect is achieved, heat dissipation continuity is higher, in addition, a liquid flowing mechanism is further arranged, and overall heat dissipation is more uniform.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical components, and in particular to a combined micro-current transformer. BACKGROUND

[0002] In the operation and monitoring of power systems, current transformers are indispensable key equipment, which are responsible for converting large primary-side currents into small secondary-side currents in proportion for use by measurement, protection and control devices.

[0003] However, in actual use scenarios, the power system often experiences large currents. When the current exceeds the normal operating range of the current transformer, the core is prone to magnetic saturation. After the core is magnetically saturated, the permeability is greatly reduced, causing the excitation current of the transformer to increase sharply, which not only significantly increases the measurement error, affecting the accuracy of electric energy metering, but also causes a series of adverse consequences. Among them, the heat generated by the current transformer during operation will increase significantly, and if too much heat cannot be dissipated in time, it will further exacerbate the aging of the core and other components, reducing the service life of the equipment.

[0004] Currently, the existing technology for the heat dissipation of current transformers is relatively single, mainly relying on passive heat dissipation, i.e., heat exchange between the device's own shell and the surrounding environment to achieve heat dissipation. This heat dissipation method has obvious limitations in high-load use cases. Due to the lack of active and effective heat dissipation mechanisms, when the current transformer is in a large current working state for a long time, internal heat accumulates, and the heat dissipation effect cannot meet the actual demand, thereby affecting the performance stability and reliability of the equipment, and even possibly causing safety accidents. SUMMARY

[0005] The purpose of the present application is to solve the shortcomings in the prior art and provide a combined micro-current transformer. The current transformer uses internal oil flow heat dissipation when in use, has stronger continuity in heat dissipation, and is additionally provided with a liquid flow mechanism to make the overall heat dissipation more uniform.

[0006] To achieve the above purpose, the present application adopts the following technical solutions:

[0007] The utility model provides a kind of combined micro-current transformer, including shell, the upper end of the shell is equipped with installation slot, the inner bottom of the installation slot is equipped with multiple transformer bodies, the upper end of the shell is equipped with sealing cover;Heat dissipation mechanism, the heat dissipation mechanism includes multiple cooling fins being set through on sealing cover, the lower end of multiple cooling fins is extended to the inside of installation slot;Liquid flow mechanism, the liquid flow mechanism includes the mount of shell lower end, the motor is installed on the mount, the output shaft of the motor is fixedly connected with rotating disc, the lower end of the shell is equipped with cylindrical slot, the first piston plate that can slide up and down is arranged in the cylindrical slot, the eccentricity of the rotating disc is rotatably connected with connecting rod, the other end of the connecting rod is rotatably connected with the lower end of the first piston plate, the inner top space of the cylindrical slot is communicated with the left side space of installation slot by one-way liquid inlet pipe, the inner bottom space of the cylindrical slot is communicated with the right side space of installation slot by one-way liquid outlet pipe;Agitating mechanism, the mechanism is cooperated with liquid flow mechanism;Auxiliary cooling mechanism, the auxiliary cooling mechanism is used to promote the cooling of multiple cooling fins.

[0008] Preferably, the one-way inlet pipe and the one-way outlet pipe are both equipped with a first one-way valve, the first one-way valve in the one-way inlet pipe flows to the installation slot unidirectionally into the top space of the cylindrical slot, and the first one-way valve in the one-way outlet pipe flows from the top space of the cylindrical slot unidirectionally into the installation slot.

[0009] Preferably, the agitating mechanism includes a connecting cylinder fixedly connected to the right side of the shell, a cylindrical slide groove is formed in the left side of the connecting cylinder, a second piston plate that can slide left and right is arranged in the cylindrical slide groove, a rack is fixedly connected to the left side of the second piston plate, two rotating shafts are rotatably connected to the inner bottom of the installation slot, a plurality of agitating rods are installed on each rotating shaft, a gear is installed on each rotating shaft, and each gear is engaged with the rack.

[0010] Preferably, the auxiliary cooling mechanism includes a high-pressure tank installed on the upper end of the sealing cover, a hollow bar is fixedly connected to the upper end of the sealing cover, a rectangular through slot is formed in the left inner wall of the hollow bar, the high-pressure tank is filled with high-pressure air, a connecting pipe is communicated with the inner top space of the high-pressure tank, the other end of the connecting pipe is communicated with a vortex tube, the cold air end of the vortex tube extends into the hollow bar, and a pressure relief valve is installed on the connecting pipe.

[0011] Preferably, a rectangular sleeve is fixedly connected to the right side of the second piston plate, a first rectangular rod is fixedly connected to the right inner wall of the cylindrical slide groove, the left end of the first rectangular rod extends into the rectangular sleeve, and the inner wall of the rectangular sleeve is slidably connected with the left end of the first rectangular rod.

[0012] Preferably, the right side space of the rectangular chute is provided with a one-way air inlet, and the right side space of the rectangular chute is communicated with a one-way air outlet pipe, and the other end of the one-way air outlet pipe is communicated with the inside of the high-pressure tank.

[0013] Preferably, the inside of the one-way air outlet pipe and the one-way air inlet are both provided with a second one-way valve, the flow direction of the second one-way valve in the one-way air inlet is from right to left, and the flow direction of the one-way valve in the one-way air outlet pipe is that the rectangular chute unidirectionally enters the inside of the high-pressure tank.

[0014] Preferably, the inner bottom of the mounting groove is fixedly connected with a rectangular hollow bar, the upper and lower inner walls of the rectangular hollow bar are fixedly connected with a second rectangular rod, a first conductive sliding block is arranged on the second rectangular rod, first electric connection blocks are embedded on the left and right inner walls of the inner top space of the rectangular hollow bar, the rectangular hollow bar and the mounting groove are both filled with temperature-conducting oil, the right side of the shell is fixedly connected with a rectangular box, the rectangular box is provided with a second conductive sliding block made of iron which can slide left and right, a first electromagnet is arranged on the left side inner wall of the rectangular box, a second electromagnet is arranged on the right side inner wall of the rectangular box, second electric connection blocks are embedded on the inner top and inner top of the right side space of the rectangular box, a temperature sensor is arranged on the inner bottom of the mounting groove, the temperature sensor is used for controlling the second electromagnet, two first electric connection blocks are used for controlling the first electromagnet, and two second electric connection blocks are used for controlling the motor.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] 1. The temperature sensor triggers the motor to start, releases high-pressure gas through the connecting pipe, and discharges the low-temperature high-speed gas from the rectangular through slot to the heat sink after being processed by the vortex tube, so that active cooling is realized, the cooling effect is rapidly improved, and the high cooling demand scene is met.

[0017] 2. When the motor operates, the first piston plate cooperates with the first one-way valve to make the temperature-conducting oil circulate, so that the oil temperature is uniform, the overall cooling is uniform, and the stable operation of the equipment is ensured.

[0018] 3. When the temperature-conducting oil moves, the second piston plate moves left and right, drives the gear, the rotating shaft and the stirring rod to rotate, and further promotes the flow of the oil body, so that the uniformity of the cooling effect is significantly improved.

[0019] 4. The temperature sensor is used for active cooling at high temperature, and the density is used for active cooling at low temperature, which can effectively reduce the load of the first piston plate during extraction and compression, finally reduce the load of the motor, and ensure the service life of the motor.

[0020] 5. During the whole cooling process, only one motor is used, so that the uniformity of cooling is ensured, and the cooling effect is ensured.

[0021] In summary, the combined current transformer has good active heat dissipation effect in use, and the continuity of heat dissipation is strong, and in addition, the uniformity of heat dissipation is also effectively improved through the stirring structure and the liquid flow mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A structure schematic diagram of a combined micro-current transformer is provided for the present application;

[0023] Figure 2 A structure schematic diagram of a combined micro-current transformer is provided for the present application; Figure 1 A structure schematic diagram of a combined micro-current transformer is provided for the present application;

[0024] Figure 3 A structure schematic diagram of a combined micro-current transformer is provided for the present application; Figure 1 A structure schematic diagram of a combined micro-current transformer is provided for the present application;

[0025] Figure 4 A structure schematic diagram of a combined micro-current transformer is provided for the present application; Figure 3 A structure schematic diagram of a combined micro-current transformer is provided for the present application;

[0026] Figure 5 A structure schematic diagram of a combined micro-current transformer is provided for the present application; Figure 3 A structure schematic diagram of a combined micro-current transformer is provided for the present application.

[0027] Figure 6 A structure schematic diagram of a combined micro-current transformer is provided for the present application; Figure 3 A structure schematic diagram of a combined micro-current transformer is provided for the present application;

[0028] Figure 7 A structure schematic diagram of a combined micro-current transformer is provided for the present application.

[0029] In the figure: 1 shell, 2 sealing cover, 3 heat dissipation fin, 4 connecting cylinder, 5 rectangular box, 6 one-way exhaust pipe, 7 one-way air inlet, 8 high-pressure tank, 9 pressure relief valve, 10 connecting pipe, 11 hollow bar, 12 vortex pipe, 13 mounting groove, 14 transformer body, 15 one-way liquid inlet pipe, 16 rack, 17 rotating shaft, 18 gear, 19 stirring rod, 20 mounting frame, 21 motor, 22 rotating disc, 23 connecting rod, 24 first piston plate, 25 cylindrical groove, 26 one-way liquid outlet pipe, 27 first conductive sliding block, 28 rectangular hollow bar, 29 temperature sensor, 30 second piston plate, 31 first rectangular rod, 32 rectangular sleeve, 33 first electrically connected block, 34 first electromagnet, 35 second conductive sliding block, 36 second electrically connected block, 37 second electromagnet, 38 rectangular through groove, 39 second rectangular rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0031] Reference Figures 1-7The utility model provides a combined micro current transformer, including the casing 1, the upper end of casing 1 is equipped with the installation groove 13, the inner bottom of installation groove 13 is equipped with a plurality of transformer body 14, the upper end of casing 1 is equipped with sealing cover 2,

[0032] As an embodiment of the utility model, it further comprises a heat dissipation mechanism, the heat dissipation mechanism comprises a plurality of heat dissipation fins 3 arranged through the sealing cover 2, the heat dissipation fins 3 are prior art, which have good temperature conduction performance, and the lower ends of the plurality of heat dissipation fins 3 extend into the installation groove 13,

[0033] As an embodiment of the utility model, it further comprises a liquid flow mechanism, the liquid flow mechanism comprises a mounting bracket 20 mounted at the lower end of the casing 1, a motor 21 mounted on the mounting bracket 20, a rotating disc 22 fixedly connected to the output shaft of the motor 21, a cylindrical groove 25 formed at the lower end of the casing 1, a first piston plate 24 slidably arranged in the cylindrical groove 25, a connecting rod 23 rotatably connected to the eccentric portion of the rotating disc 22, the other end of the connecting rod 23 rotatably connected to the lower end of the first piston plate 24, the space at the top of the cylindrical groove 25 in communication with the space on the left side of the installation groove 13 through a one-way liquid inlet pipe 15, the space at the bottom of the cylindrical groove 25 in communication with the space on the right side of the installation groove 13 through a one-way liquid outlet pipe 26, a first one-way valve mounted in the one-way liquid inlet pipe 15 and the one-way liquid outlet pipe 26, the flow direction of the first one-way valve in the one-way liquid inlet pipe 15 is from the installation groove 13 to the top space of the cylindrical groove 25, and the flow direction of the first one-way valve in the one-way liquid outlet pipe 26 is from the top space of the cylindrical groove 25 to the installation groove 13,

[0034] As an embodiment of the utility model, it further comprises a stirring mechanism, the stirring mechanism cooperates with the liquid flow mechanism, the stirring mechanism comprises a connecting cylinder 4 fixedly connected to the right side of the casing 1, a cylindrical sliding groove formed at the left side of the connecting cylinder 4, a second piston plate 30 slidably arranged in the cylindrical sliding groove, a rack 16 fixedly connected to the left side of the second piston plate 30, two rotating shafts 17 rotatably connected to the inner bottom of the installation groove 13, a plurality of stirring rods 19 mounted on each rotating shaft 17, a gear 18 mounted on each rotating shaft 17, each gear 18 engaged with the rack 16, a rectangular sleeve 32 fixedly connected to the right side of the second piston plate 30, a first rectangular rod 31 fixedly connected to the right inner wall of the cylindrical sliding groove, the left end of the first rectangular rod 31 extending into the rectangular sleeve 32 and slidably connected with the inner wall of the rectangular sleeve 32, in this way, the left and right movement of the second piston plate 30 is guided and cannot rotate, so that the rack 16 is always engaged with the gear 18 when moving left and right,

[0035] As one embodiment of the present application, it further comprises an auxiliary cooling mechanism for facilitating the cooling of the plurality of cooling fins 3, the auxiliary cooling mechanism comprising a high-pressure tank 8 mounted on the upper end of the sealing cover 2, the upper end of the sealing cover 2 being fixedly connected with a hollow strip 11, a rectangular through slot 38 being formed on the left inner wall of the hollow strip 11, the high-pressure tank 8 being filled with high-pressure air, the inner top space of the high-pressure tank 8 being communicated with a connecting pipe 10, the other end of the connecting pipe 10 being communicated with a vortex tube 12, the working principle of the vortex tube 12 being based on the vortex separation phenomenon of compressed air, when the compressed air is injected into the vortex chamber of the vortex tube 12, the airflow flows to one end of the vortex tube 12 in a high-speed rotating manner, in this process, the airflow is separated into two parts: one part of the airflow flows out through the control valve, forming a hot airflow; the other part of the airflow reverses rotation at the same speed in the inner ring, forming a cold airflow, the vortex tube 12 having two air outlet parts of cold air end and hot air end, the cold air end of the vortex tube 12 extending into the hollow strip 11, the connecting pipe 10 being provided with a pressure relief valve 9, when the gas pressure is higher than the threshold value of the pressure relief valve 9, the pressure relief valve 9 will open, release a part of the gas and then close, again reach the threshold value of the pressure relief valve 9, it will open again, the right side space of the rectangular sliding groove being provided with a one-way air inlet 7, the right side space of the rectangular sliding groove being communicated with a one-way air outlet pipe 6, the other end of the one-way air outlet pipe 6 being communicated with the inside of the high-pressure tank 8, the inside of the one-way air outlet pipe 6 and the one-way air inlet 7 being provided with a second one-way valve, the flow direction of the second one-way valve in the one-way air inlet 7 being from right to left, the flow direction of the one-way valve in the one-way air outlet pipe 6 being from the rectangular sliding groove to the inside of the high-pressure tank 8;

[0036] As an embodiment of the present application, the inner bottom of the mounting groove 13 is fixedly connected with a rectangular hollow bar 28 made of copper, the upper and lower inner walls of the rectangular hollow bar 28 are fixedly connected with a second rectangular rod 39, the first conductive sliding block 27 is arranged through the second rectangular rod 39, the density of the first conductive sliding block 27 is less than that of the insulating temperature oil at normal temperature, but greater than that of the insulating temperature oil when the temperature exceeds 45 DEG C, the left and right inner walls of the inner top space of the rectangular hollow bar 28 are embedded with the first electrically-conductive blocks 33, the rectangular hollow bar 28 and the mounting groove 13 are filled with temperature oil, the right side of the shell 1 is fixedly connected with a rectangular box 5, the rectangular box 5 is arranged with a second conductive sliding block 35 made of iron which can slide left and right, the left inner wall of the rectangular box 5 is provided with a first electromagnet 34, the right inner wall of the rectangular box 5 is provided with a second electromagnet 37, the right space and the inner top of the rectangular box 5 are embedded with the second electrically-conductive blocks 36, the inner bottom of the mounting groove 13 is provided with a temperature sensor 29, and a controller is further arranged, when the temperature of the temperature sensor 29 rises to a set temperature, the second electromagnet 37 is controlled to be powered on for a few seconds and then turned off by the controller, the temperature sensor 29 is used to control the second electromagnet 37, the two first electrically-conductive blocks 33 are used to control the first electromagnet 34, that is, the two first electrically-conductive blocks 33 and the first electromagnet 34 are in the same series circuit, when the two first electrically-conductive blocks 33 are connected, the first electromagnet 34 is powered on, and the two second electrically-conductive blocks 36 are used to control the motor 21, that is, the two second electrically-conductive blocks 36 and the motor 21 are in the same series circuit, when the two second electrically-conductive blocks 36 are connected, the motor 21 can be started.

[0037] In the present application, when the transformer is normally used, heat is accumulated in the mounting groove 13, the accumulated heat is transmitted to the heat dissipation fin 3 through the insulating temperature oil, and is passively dissipated through the heat dissipation fin 3, when passive heat dissipation is insufficient to meet the heat dissipation requirement, the temperature of the internal insulating temperature oil rises, the density of the insulating temperature oil decreases with the increase of the temperature, the first conductive sliding block 27 moves downward, after the first conductive sliding block 27 moves downward, the first conductive sliding block 27 does not contact the two first electrically-conductive blocks 33, at this time, the first electromagnet 34 is powered off, and when the temperature sensor 29 senses that the temperature is higher than the set temperature, the second electromagnet 37 is powered on for a few seconds, in this process, the second conductive sliding block 35 made of iron is attracted to move rightward and contact the two second electrically-conductive blocks 36, at this time, the motor 21 is started, after the motor 21 is started, the rotating disc 22 is driven to rotate, the rotation of the rotating disc 22 drives the first piston plate 24 to reciprocate up and down through the connecting rod 23;

[0038] When the first piston plate 24 moves downward, the insulating temperature guide oil in the installation groove 13 will be flushed into the installation groove 13 through the one-way liquid inlet pipe 15, and when the first piston plate 24 moves upward, the insulating temperature guide oil will be pressed into the installation groove 13 through the one-way liquid outlet pipe 26, so that the insulating temperature guide oil in the installation groove 13 flows in a circulating manner, and the insulating temperature guide oil in the installation groove 13 reciprocates to decrease and increase, so that the second piston plate 30 reciprocates left and right, and when the second piston plate 30 moves left, the gas will be sucked in through the one-way air inlet 7, and when the second piston plate 30 moves right, the gas will be pressed into the high-pressure tank 8, so that the amount of gas in the high-pressure tank 8 increases continuously, and the gas pressure increases, and when the gas pressure reaches the threshold value of the pressure relief valve 9, the pressure relief valve 9 opens, releases part of the gas, and then closes, and when the subsequent gas pressure increases, the pressure relief valve 9 opens again, then releases part of the gas, and then closes, and the process is repeated, that is, as the motor 21 starts, the connecting pipe 10 will intermittently release high-pressure gas, and after the high-pressure gas is released, it enters the hollow strip 11 from the cold end of the vortex tube 12, and finally is discharged from the rectangular through groove 38, and the low-temperature high-speed gas blows towards the heat dissipation fins 3, which can quickly cool the heat dissipation fins 3, and actively dissipate heat, so that the heat dissipation effect is rapidly improved.

[0039] In addition, in the above process, the flow of the insulating temperature guide oil can make the temperature of the oil body more uniform, so that the overall heat dissipation is more uniform.

[0040] And the left and right movement of the second piston plate 30 also causes the two gears 18 to reciprocate through the rack 16, so that the rotating shaft 17 reciprocates, and finally drives the plurality of stirring rods 19 to rotate, further promoting the flow of the oil body, and further improving the uniformity of the heat dissipation effect.

[0041] When the temperature continues to decrease, the fluidity of the liquid decreases and the density increases, and when the density is lower than that of the first conductive sliding block 27, the first conductive sliding block 27 will float up and finally contact the two first electrically conductive blocks 33, at this time the first electromagnet 34 is energized, attracting the second conductive sliding block 35 to move left, no longer contacting the two second electrically conductive blocks 36, the circuit in which the motor 21 is located is disconnected, the motor 21 is de-energized, and the active heat dissipation is stopped.

[0042] It is worth mentioning that the temperature sensor 29 is used for high-temperature active heat dissipation, and the density control low-temperature active heat dissipation has the advantages that the density of the insulating temperature guide oil increases due to aging after being used for a long time (but the temperature density will still decrease significantly after heating), and when the set density is reached to disconnect the active heat dissipation, the density of the oil body will not be too large, and the temperature will only be a little higher than the normal temperature (5-10℃), so that the actual heat dissipation effect will not be affected, but the load of the first piston plate 24 during extraction and compression can be effectively reduced, and finally the load of the motor 21 is reduced, ensuring the service life of the motor 21.

[0043] The above merely provides the preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent substitutions or changes within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A combined micro current transformer, characterized in that: include: A housing (1), wherein an installation groove (13) is provided at the upper end of the housing (1), a plurality of mutual inductor bodies (14) are installed at the inner bottom of the installation groove (13), and a sealing cover (2) is installed at the upper end of the housing (1); A heat dissipation mechanism, the heat dissipation mechanism comprising a plurality of heat dissipation fins (3) penetrating the sealing cover (2), wherein the lower ends of the plurality of heat dissipation fins (3) extend into the interior of the mounting groove (13); A liquid flow mechanism, the liquid flow mechanism includes a mounting frame (20) mounted on the lower end of a housing (1), a motor (21) mounted on the mounting frame (20), an output shaft of the motor (21) fixedly connected to a rotating disk (22), a columnar groove (25) is provided at the lower end of the housing (1), a first piston plate (24) that can slide up and down is provided in the columnar groove (25), a connecting rod (23) is rotatably connected to the eccentric portion of the rotating disk (22), the other end of the connecting rod (23) is rotatably connected to the lower end of the first piston plate (24), the inner top space of the columnar groove (25) is communicated with the left side space of the mounting groove (13) through a one-way liquid inlet pipe (15), and the inner bottom space of the columnar groove (25) is communicated with the right side space of the mounting groove (13) through a one-way liquid outlet pipe (26); a stirring mechanism, said mechanism cooperating with the liquid flow mechanism; An auxiliary cooling mechanism is provided, wherein the auxiliary cooling mechanism is used to promote the cooling of a plurality of heat sinks (3).

2. A combined micro current transformer according to claim 1, characterized in that: A first one-way valve is installed in both the one-way liquid inlet pipe (15) and the one-way liquid outlet pipe (26). The first one-way valve in the one-way liquid inlet pipe (15) allows liquid to flow from the installation groove (13) to the top space of the columnar groove (25) in one direction, while the first one-way valve in the one-way liquid outlet pipe (26) allows liquid to flow from the top space of the columnar groove (25) to the installation groove (13) in one direction.

3. The combined micro current transformer according to claim 1, characterized in that: The stirring mechanism comprises a connecting cylinder (4) fixedly connected to the right side of the shell (1), a columnar slide groove is provided on the left side of the connecting cylinder (4), a second piston plate (30) that can slide left and right is provided in the columnar slide groove, a rack (16) is fixedly connected to the left side of the second piston plate (30), the inner bottom of the mounting groove (13) is rotatably connected to two rotating shafts (17), each of the rotating shafts (17) is mounted with a plurality of stirring rods (19), each of the rotating shafts (17) is mounted with a gear (18), and each of the gears (18) is meshed with the rack (16).

4. A combined micro current transformer according to claim 3, characterized in that: The auxiliary cooling mechanism comprises a high-pressure tank (8) mounted on the upper end of the sealing cover (2); the upper end of the sealing cover (2) is fixedly connected to a hollow bar (11); a rectangular through groove (38) is provided on the left inner wall of the hollow bar (11); the interior of the high-pressure tank (8) is filled with high-pressure air; the inner top space of the high-pressure tank (8) is connected to a connecting pipe (10); the other end of the connecting pipe (10) is connected to a vortex tube (12); the cold air end of the vortex tube (12) extends to the interior of the hollow bar (11); and a pressure relief valve (9) is installed on the connecting pipe (10).

5. The combined micro current transformer according to claim 1, characterized in that: A rectangular sleeve (32) is fixedly connected to the right side of the second piston plate (30), a first rectangular rod (31) is fixedly connected to the right inner wall of the columnar chute, and the left end of the first rectangular rod (31) extends into the rectangular sleeve (32) and is slidably connected to the inner wall of the rectangular sleeve (32).

6. The combined micro current transformer according to claim 4, characterized in that: A one-way air inlet (7) is provided in the right space of the rectangular chute, and a one-way exhaust pipe (6) is connected to the right space of the rectangular chute, and the other end of the one-way exhaust pipe (6) is connected to the interior of the high-pressure tank (8).

7. A combined micro current transformer according to claim 6, characterized in that: A second one-way valve is installed inside the one-way exhaust pipe (6) and the one-way air inlet (7). The flow direction of the second one-way valve in the one-way air inlet (7) is from right to left, and the flow direction of the one-way valve in the one-way exhaust pipe (6) is a rectangular chute that enters the high-pressure tank (8) in one direction.

8. The combined micro current transformer according to claim 1, characterized in that: The inner bottom of the installation groove (13) is fixedly connected with a rectangular hollow bar (28), the upper and lower inner walls of the rectangular hollow bar (28) are fixedly connected with a second rectangular rod (39), the second rectangular rod (39) is provided with a first conductive slider (27), the inner walls on both sides of the inner top space of the rectangular hollow bar (28) are embedded with first power blocks (33), the rectangular hollow bar (28) and the installation groove (13) are filled with temperature conducting oil, the right side of the shell (1) is fixedly connected with a rectangular box (5), and the rectangular box (5) is provided with an iron first sliding block that can slide left and right. Two conductive sliders (35), a first electromagnet (34) is installed on the left inner wall of the rectangular box (5), a second electromagnet (37) is installed on the right inner wall of the rectangular box (5), a second power connection block (36) is embedded in the top and inner top of the right space of the rectangular box (5), a temperature sensor (29) is installed on the inner bottom of the installation groove (13), the temperature sensor (29) is used to control the second electromagnet (37), the two first power connection blocks (33) are used to control the first electromagnet (34), and the two second power connection blocks (36) are used to control the motor (21).

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