Primary and secondary integrated multi-functional instrument-type current transformer

Abstract

This application relates to a primary and secondary integrated multifunctional instrument-type current transformer, comprising a body and an intelligent module. The body includes a housing and a first coil. The housing has a receiving cavity and a central opening. The receiving cavity is located on the outer periphery of the central opening, and the first coil is located inside the receiving cavity. The central opening is for copper busbars to pass through, and multiple central openings are provided. The intelligent module includes a circuit board, which includes a signal processing circuit and a voltage sensing unit. The signal processing circuit is electrically connected to the coil to acquire current parameters, and the voltage sensing unit is used to acquire voltage parameters. The body and intelligent module are integrated, requiring only one installation of the body. The copper busbars do not need to bend, reducing the amount of copper busbar material used and reducing manpower and material resources.

Description

Technical Field

[0001] This application relates to the field of integrated primary and secondary multi-functional instrument transformers, and more particularly to an integrated primary and secondary multi-functional instrument transformer. Background Technology

[0002] Drawer-type switchgear is a closed enclosure made of steel plate. The electrical components of the incoming and outgoing circuits are installed in removable drawers, forming a functional unit capable of performing a specific type of power supply task. Due to its advantages such as compact design, good versatility, standardized modular design, safety, reliability, and convenient maintenance, drawer-type switchgear is widely used in the complete electrical system industry.

[0003] Currently, the main circuit connector inside the drawer of a drawer-type switchgear is an indispensable and important component for the stable operation of the drawer circuit. When the drawer circuit needs to be operated, the operator pushes the drawer into the switchgear, allowing the incoming plug on the drawer to be flexibly connected to the vertical busbar on the switchgear, and the outgoing plug on the drawer to be flexibly connected to the outgoing static plug on the switchgear, thus starting the drawer circuit. At the same time, the terminals of the outgoing plugs are fixedly connected to the copper busbars of the circuit breakers inside the drawer through copper busbars or wires, and current transformers are installed on the copper busbars or wires to read the three-phase current, thereby enabling the drawer circuit to operate stably and complete the power supply function of the switchgear.

[0004] However, existing drawer-type switch cabinets typically have three current transformers. These three current transformers are used to sense the magnitude of the main circuit current and display it via an ammeter or multi-function meter. However, the current transformers require copper busbars to pass through them, and signal lines need to be led out from each current transformer and connected one by one to the instruments outside the drawer. This results in numerous wiring connections, time-consuming manual wiring, and a waste of manpower and resources. Summary of the Invention

[0005] To save manpower and resources, this application provides a primary and secondary integrated multi-functional instrument-type current transformer.

[0006] The technical solution of the primary and secondary integrated multi-functional instrument-type current transformer provided in this application is as follows:

[0007] A primary and secondary integrated multifunctional instrument-type current transformer includes a body and an intelligent module. The body includes a housing and a first coil. The housing has a receiving cavity and a central opening. The receiving cavity is located on the outer periphery of the central opening. The first coil is located inside the receiving cavity. The central opening is for copper busbars to pass through. There are multiple central openings. The intelligent module includes a circuit board. The circuit board includes a signal processing circuit and a voltage sensing unit. The signal processing circuit is electrically connected to the coil to obtain current parameters. The voltage sensing unit is used to obtain voltage parameters.

[0008] By adopting the above technical solution, the main body and intelligent module are integrated, and the main body only needs to be installed once. The copper busbar does not need to bend, reducing the amount of copper busbar material used and reducing manpower and material resources.

[0009] Preferably, the system also includes cables and instruments. The intelligent module includes a housing and an interface. The housing is fixedly connected to the outer wall of the housing. The housing has a mounting cavity. The circuit board is fixedly connected to the inner wall of the mounting cavity. The housing has a transmission port. The interface is fixedly connected to the inner wall of the transmission port. The interface is electrically connected to the circuit board. One end of the cable is electrically connected to the interface, and the other end of the cable is electrically connected to the instrument.

[0010] By adopting the above technical solution, the parameters detected by the intelligent module are transmitted to the instrument via cable, eliminating the need for multiple signal lines to be led out to the instrument, reducing the use of wiring materials, reducing the number of wiring attempts, and reducing manpower and material resources.

[0011] Preferably, it also includes a fixing component, which includes a suction cup and a one-way valve. One end of the suction cup is provided with an adsorption port, and the other end of the suction cup is fixedly connected to the outer wall of the housing. The adsorption port is used to adsorb the mounting surface. The suction cup is provided with an exhaust port, which is connected to the adsorption port. The one-way valve is fixedly connected to the inner wall of the exhaust port.

[0012] By adopting the above technical solution, the suction cup is used to fix the shell to the mounting surface. The staff only needs to move the shell to the correct position and press the shell to complete the fixation. The operation is simple and reduces manpower and material resources.

[0013] Preferably, the fixing component further includes a shape memory alloy and a pressure plate. One end of the shape memory alloy is connected to the outer wall of the housing, and the other end of the shape memory alloy is fixedly connected to one side of the pressure plate. The other side of the pressure plate is used to abut against the outer wall of the suction cup away from the suction port. When the ambient temperature rises to the deformation temperature of the shape memory alloy, the shape memory alloy deforms and elongates, pushing the pressure plate to abut against the suction cup.

[0014] By adopting the above technical solution, when the temperature rises, the volume of residual gas in the suction cup increases, which may reduce the connection strength between the suction cup and the mounting surface. The housing is limited by the copper busbar, and the shape memory alloy deforms and elongates, causing the pressure plate to move away from the housing, pushing the suction cup to release excess gas, pressing it against the mounting surface, and improving the stability of the connection structure.

[0015] Preferably, the housing is provided with a heat dissipation channel, and the outer wall of the housing is provided with a water inlet and a water outlet, which are respectively connected to the two ends of the heat dissipation channel, and the height of the water inlet is greater than the height of the water outlet.

[0016] By adopting the above technical solution, the interaction between the three copper busbars and the transformer results in a higher transformer temperature. The heat dissipation fins and heat dissipation channels dissipate heat from the transformer, extending its service life.

[0017] Preferably, the device further includes a sealing block and a heat-conducting column. The outlet has a sliding groove on its inner wall facing the pressure plate, and the housing has an opening on its outer wall facing the pressure plate. The sealing block is slidably connected to the groove wall of the sliding groove and is used to control the opening and closing of the outlet. The heat-conducting column is slidably connected to the inner wall of the opening. One end of the heat-conducting column is fixedly connected to the sealing block, and the other end is fixedly connected to the shape memory alloy.

[0018] By adopting the above technical solution, when the liquid temperature in the heat dissipation channel is normal, the pressure plate's gravity blocks the outlet. When the liquid temperature in the heat dissipation channel rises, the current transformer's heat dissipation is impaired. When the liquid temperature rises to the preset temperature, the shape memory alloy deforms and elongates, opening the outlet and replacing the heat dissipation channel with a lower-temperature liquid.

[0019] Preferably, it also includes a water tank, a water pump, an inlet pipe, and an outlet pipe. The water tank is provided with a water storage chamber. The pump casing of the water pump is connected to the inner wall of the water storage chamber. One end of the inlet pipe is coaxially fixedly connected to the inner wall of the inlet, and the other end of the inlet pipe is connected to the outlet of the water pump. One end of the outlet pipe is coaxially fixedly connected to the inner wall of the outlet, and the other end of the outlet pipe is connected to the water storage chamber.

[0020] By adopting the above technical solution, the water pump starts, and the water in the water storage chamber enters the heat dissipation channel from the inlet pipe and is discharged from the outlet pipe, which facilitates heat dissipation for the current transformer.

[0021] Preferably, it further includes a magnetic component, a valve stem, a valve core, a metal plate, and a first spring. The magnetic component is located below the water outlet pipe, and the end of the water outlet pipe facing the magnetic component has a connection port. The valve stem is slidably connected to the inner wall of the connection port. The valve core is fixedly connected to one end of the valve stem and is used to control the opening degree of the water outlet pipe. The other end of the valve stem is fixedly connected to the metal plate. One end of the first spring is fixedly connected to the metal plate, and the other end of the first spring is fixedly connected to the outer wall of the water outlet pipe.

[0022] By adopting the above technical solution, the magnetic component attracts the metal plate, and the magnetic force of the magnetic component controls the opening, which facilitates the adjustment of the flow rate and improves the heat dissipation efficiency.

[0023] Preferably, the magnetic component includes a first thermoelectric film, a second coil, and a phase change material. One end of the first thermoelectric film is fixedly connected to the outer wall of the housing, and the other end of the first thermoelectric film is fixedly connected to the phase change material. The second coil is sleeved on the outer periphery of the first thermoelectric film.

[0024] By adopting the above technical solution, the temperature difference between the two ends of the first thermoelectric film changes, which in turn changes the magnetic force of the magnetic component. When the temperature difference increases, it indicates that the shell temperature rises and the heat dissipation efficiency is low. At this time, the valve stem moves, the opening of the water outlet pipe increases, the cooling water flow rate increases, and the heat dissipation efficiency is improved.

[0025] Preferably, it further includes a second thermoelectric film, a fixing plate, a first electrode sheet, a rubber ring, a second electrode sheet, and an electrochromic film. One end of the second thermoelectric film is fixedly connected to the water inlet pipe, and the other end of the second thermoelectric film is fixedly connected to the water outlet pipe. The first electrode sheet is electrically connected to the second thermoelectric film. The fixing plate is located above the magnet. The second electrode sheet is fixedly connected to the fixing plate. The first electrode sheet is located above the second electrode sheet. The first electrode sheet is fixedly connected to the second electrode sheet by a rubber ring. The second electrode sheet is electrically connected to the electrochromic film.

[0026] By adopting the above technical solution, when the shell temperature is high, the first electrode plate and the second electrode plate are bonded together and conduct electricity. When the temperature difference between the two ends of the second thermoelectric film is small, it indicates that the overall temperature of the water in the water tank is high, and the electrochromic film reminds the user to change the water.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The main body and intelligent module are integrated, and only the main body needs to be installed once. The copper busbar does not need to bend, reducing the use of copper busbar materials and reducing manpower and material resources;

[0029] 2. When the liquid temperature in the heat dissipation channel is normal, the pressure plate's gravity blocks the outlet. When the liquid temperature in the heat dissipation channel rises, the current transformer's heat dissipation is impaired. When the liquid temperature rises to the preset temperature, the shape memory alloy deforms and elongates, opening the outlet and replacing the heat dissipation channel with a cooler liquid.

[0030] 3. The temperature difference between the two ends of the first thermoelectric film changes, which causes the magnetic force of the magnetic component to change. When the temperature difference increases, it indicates that the shell temperature rises and the heat dissipation efficiency is low. At this time, the valve stem moves, the opening of the water outlet pipe increases, the cooling water flow rate increases, and the heat dissipation efficiency is improved. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a primary and secondary integrated multi-functional instrument-type current transformer.

[0032] Figure 2 This is a schematic diagram of the overall structure of a primary and secondary integrated multi-functional instrument-type current transformer, mainly used to show the main body, intelligent module, heat dissipation components, fixing components, control components, and warning components.

[0033] Figure 3 This is a cross-sectional view of a primary and secondary integrated multi-functional instrument-type current transformer.

[0034] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0035] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0036] Explanation of reference numerals in the attached drawings: 1. Body; 11. Shell; 111. Receiving cavity; 1111. First insulating layer; 112. Center opening; 1121. Second insulating layer; 113. Heat dissipation channel; 114. Water inlet; 115. Water outlet; 1151. Sliding groove; 116. Through port; 12. First coil; 2. Intelligent module; 21. Shell; 211. Mounting cavity; 222. Transmission port; 22. Circuit board; 23. Interface; 3. Cable; 4. Instrument; 5. Heat sink; 51. Water tank; 511. Water storage cavity; 52. Water pump; 53. Water inlet pipe; 54. Water outlet pipe; 541. Connection port; 55. Seal 56. Block; 57. Heat-conducting column; 6. Heat-conducting rod; 6. Fixing component; 61. Suction cup; 611. Adsorption port; 612. Exhaust port; 62. One-way valve; 63. Shape memory alloy; 64. Pressure plate; 641. Clearance port; 7. Control component; 71. Insulating plate; 72. Magnetic component; 721. First thermoelectric film; 722. Second coil; 723. Phase change material; 73. Cup body; 74. Valve stem; 75. Valve core; 76. Metal plate; 77. First spring; 8. Warning component; 81. Second thermoelectric film; 82. Fixing plate; 83. First electrode sheet; 84. Rubber ring; 85. Second electrode sheet; 86. Electrochromic film. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0038] This application discloses a primary and secondary integrated multi-functional instrument-type current transformer. (Refer to...) Figure 1 and Figure 2 The primary and secondary integrated multi-functional instrument-type current transformer includes a main body 1, an intelligent module 2, a cable 3, an instrument 4, a heat sink 5, a fixing component 6, a control component 7, and a warning component 8.

[0039] Reference Figure 3The main body 1 includes a housing 11 and a first coil 12. The housing 11 has a receiving cavity 111 and a central opening 112. The receiving cavity 111 is located on the outer periphery of the central opening 112, and the central opening 112 penetrates the housing 11 along its thickness direction. The first coil 12 is located inside the receiving cavity 111. The central opening 112 is used for copper busbars to pass through. There are three central openings 112, which are evenly spaced along the length direction of the housing 11. A first insulating layer 1111 is fixedly connected to the inner wall of the receiving cavity 111 facing the central opening 112, and a second insulating layer 1121 is fixedly connected to the inner wall of the central opening 112.

[0040] Reference Figure 1 and Figure 3 The intelligent module 2 includes a housing 21, a circuit board 22, and an interface 23. The housing 21 is fixedly connected to the upper end of the housing 11. The housing 21 has a mounting cavity 211. The circuit board 22 is fixedly connected to the inner wall of the mounting cavity 211. The circuit board 22 includes a signal processing circuit and a voltage sensing unit. The signal processing circuit is electrically connected to the coil to obtain current parameters, and the voltage sensing unit is used to obtain voltage parameters. The upper end of the housing 21 has a transmission port 222. The interface 23 is fixedly connected to the inner wall of the transmission port 222 and is electrically connected to the circuit board 22. One end of the cable 3 is electrically plugged into the interface 23, and the other end of the cable 3 is electrically connected to the instrument 4.

[0041] Reference Figure 2 and Figure 3 The heat dissipation component 5 includes a water tank 51, a water pump 52, an inlet pipe 53, an outlet pipe 54, a sealing block 55, a heat-conducting column 56, and a heat-conducting rod 57. The housing 11 has a heat dissipation channel 113, and the outer wall of the housing 11 has an inlet 114 and an outlet 115, which are respectively connected to the two ends of the heat dissipation channel 113. The height of the inlet 114 is greater than the height of the outlet 115. The water tank 51 has a water storage chamber 511. The pump casing of the water pump 52 is fixedly connected to the bottom wall of the water storage chamber 511. One end of the inlet pipe 53 is coaxially fixedly connected to the inner wall of the inlet 114, and the other end of the inlet pipe 53 is connected to the outlet of the water pump 52. One end of the outlet pipe 54 is coaxially fixedly connected to the inner wall of the outlet 115, and the other end of the outlet pipe 54 is connected to the water storage chamber 511. The outlet pipe 54 is located near the top wall of the water storage chamber 511.

[0042] Reference Figure 3 and Figure 4The inner wall of the outlet 115 facing downward is provided with a sliding groove 1151. There are two sliding grooves 1151, which are respectively close to the two ends of the shell 11 along its length. The outer wall of the shell 11 facing downward is provided with a through-hole 116. The sealing block 55 is slidably connected to the groove wall of the sliding groove 1151. The sealing block 55 is used to control the opening and closing of the outlet 115. The heat-conducting column 56 is slidably connected to the inner wall of the through-hole 116. One end of the heat-conducting column 56 is fixedly connected to the sealing block 55. The two ends of the heat-conducting rod 57 are respectively fixedly connected to the two heat-conducting columns 56.

[0043] Reference Figure 4 The fixing component 6 includes a suction cup 61, a one-way valve 62, a shape memory alloy 63, and a pressure plate 64. One end of the suction cup 61 is provided with an adsorption port 611, and the other end of the suction cup 61 is fixedly connected to the lower end of the housing 11. There are two suction cups 61, which are respectively located near the two ends of the housing 11 along its length. The adsorption port 611 is used to adsorb the mounting surface, which is set as the bottom wall of the drawer. The upper end of the suction cup 61 is provided with an exhaust port 612, which is located on the outer periphery of the axis of the adsorption port 611 and is connected to the adsorption port 611. The one-way valve 62 is fixedly connected to the inner wall of the exhaust port 612.

[0044] The pressure plate 64 is provided with a clearance opening 641 for the suction cup 61 to pass through. One end of the shape memory alloy 63 is connected to the end of the heat-conducting column 56 away from the sealing block 55, and the other end of the shape memory alloy 63 is fixedly connected to the upper end of the pressure plate 64. The lower end of the pressure plate 64 is used to abut against the outer wall of the suction cup 61 away from the suction port 611. When the ambient temperature rises to the deformation temperature of the shape memory alloy 63, the shape memory alloy 63 deforms and elongates, pushing the pressure plate 64 to abut against the suction cup 61.

[0045] Reference Figure 3 and Figure 5 The control component 7 includes an insulating plate 71, a magnetic component 72, a cup body 73, a valve stem 74, a valve core 75, a metal plate 76, and a first spring 77. The magnetic component 72 is located below the water outlet pipe 54 and includes a first thermoelectric film 721, a second coil 722, and a phase change material 723. One end of the first thermoelectric film 721 is fixedly connected to the outer wall of the housing 11, and the other end is fixedly connected to the phase change material 723. The phase change material 723 is located inside the cup body 73, which is fixedly connected to the upper end of the insulating plate 71. The second coil 722 is sleeved around the outer periphery of the first thermoelectric film 721 and is fixedly connected to the insulating plate 71. The first thermoelectric film 721 contains a ferromagnetic layer.

[0046] The outlet pipe 54 has a connection port 541 at one end facing the magnet 72. The valve stem 74 is slidably connected to the inner wall of the connection port 541. The valve core 75 is fixedly connected to one end of the valve stem 74 and is used to control the opening degree of the outlet pipe 54. The other end of the valve stem 74 is fixedly connected to the metal plate 76. One end of the first spring 77 is fixedly connected to the metal plate 76, and the other end of the first spring 77 is fixedly connected to the outer wall of the outlet pipe 54. The weight of the valve stem 74, the metal plate 76, and the valve core 75 causes the pipe to open when there is no external force. When the temperature of the shell 11 further increases and the current generated by the first thermoelectric film 721 is larger, the magnetic force of the magnet 72 increases, the metal plate 76 moves downward, the first spring 77 is stretched, and the opening degree of the outlet pipe 54 increases. The phase change material 723 is paraffin wax.

[0047] Reference Figure 2 The warning component 8 includes a second thermoelectric film 81, a fixing plate 82, a first electrode sheet 83, a rubber ring 84, a second electrode sheet 85, and an electrochromic film 86.

[0048] One end of the second thermoelectric film 81 is fixedly connected to the inlet pipe 53, and the other end is fixedly connected to the outlet pipe 54. The first electrode plate 83 is electrically connected to the second thermoelectric film 81 via a wire. The fixing plate 82 is located above the magnetic component 72. The second electrode plate 85 is fixedly connected to the upper end of the fixing plate 82, and the first electrode plate 83 is located above the second electrode plate 85. The first electrode plate 83 is fixedly connected to the second electrode plate 85 via a rubber ring 84. The second electrode plate 85 is electrically connected to the electrochromic film 86 via a wire. When the temperature difference between the two ends of the second thermoelectric film 81 reaches a preset value, the electrochromic film 86 changes color, and the water temperature in the water tank 51 is low, which is normal. When the temperature difference between the two ends of the thermoelectric film is less than the preset value, the color of the electrochromic film resets. At this time, the user is reminded that the water temperature in the water tank 51 has risen and is not easy to dissipate heat, and the user is reminded to change the water.

[0049] The implementation principle of a primary and secondary integrated multi-functional instrument-type current transformer according to an embodiment of this application is as follows: When the liquid temperature in the heat dissipation channel 113 is normal, the pressure plate 64 blocks the outlet 115 due to gravity. When the liquid temperature in the heat dissipation channel rises, the current transformer's heat dissipation is not smooth. When the liquid temperature rises to the preset temperature, the shape memory alloy 63 deforms and elongates, and the outlet 115 opens, allowing the heat dissipation channel to be replaced with a lower temperature liquid. The temperature difference between the two ends of the first thermoelectric film 721 changes, causing the magnetic force of the magnetic component 72 to change. When the temperature difference increases, it indicates that the temperature of the shell 11 has increased and the heat dissipation efficiency is low. At this time, the valve stem 74 moves, the opening of the water outlet pipe 54 increases, the cooling water flow rate increases, and the heat dissipation efficiency is improved.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A primary and secondary combined multifunctional instrument transformer, characterized by: The utility model provides a kind of intelligent copper bar temperature sensor, including body (1) and intelligent module (2), the body (1) includes shell (11) and first coil (12), the shell (11) is equipped with containing cavity (111) and center mouth (112), the containing cavity (111) is located at the periphery of center mouth (112), the first coil (12) is located in containing cavity (111), the center mouth (112) is used for copper bar to pass through, the center mouth (112) is equipped with multiple, the intelligent module (2) includes circuit board (22), the circuit board (22) includes signal processing circuit and voltage sensing unit, the signal processing circuit is electrically connected to coil for obtaining current parameter, and the voltage sensing unit is used to obtain voltage parameter; Further comprising fixing part (6), the fixing part (6) includes suction cup (61) and check valve (62), one end of the suction cup (61) is equipped with suction port (611), the other end of the suction cup (61) is fixedly connected to the outer wall of shell (11), the suction port (611) is used to adsorb mounting surface, the suction cup (61) is equipped with exhaust port (612), the exhaust port (612) is communicated with suction port (611), the check valve (62) is fixedly connected to the inner wall of exhaust port (612); The fixing part (6) further includes memory alloy (63) and pressing plate (64), one end of the memory alloy (63) is connected to the outer wall of shell (11), the other end of the memory alloy (63) is fixedly connected to one side of pressing plate (64), the other side of the pressing plate (64) is used to abut the outer wall of suction cup (61) away from suction port (611), when ambient temperature rises to the deformation temperature of memory alloy (63), memory alloy (63) deforms and elongates to push pressing plate (64) to abut suction cup (61).

2. The primary and secondary combined multifunctional instrument transformer according to claim 1, characterized in that: Further comprising cable (3) and instrument (4), the intelligent module (2) includes shell (21) and interface (23), the shell (21) is fixedly connected to the outer wall of shell (11), the shell (21) is equipped with mounting cavity (211), the circuit board (22) is fixedly connected to the inner wall of mounting cavity (211), the shell (21) is equipped with transmission port (222), the interface (23) is fixedly connected to the inner wall of transmission port (222), the interface (23) is electrically connected to circuit board (22), one end of the cable (3) is electrically connected to interface (23), the other end of the cable (3) is electrically connected to instrument (4).

3. The primary and secondary combined multifunctional instrument transformer according to claim 1, characterized in that: The shell (11) is equipped with heat dissipation flow channel (113), the outer wall of shell (11) is equipped with water inlet (114) and water outlet (115), the water inlet (114) and water outlet (115) are communicated with both ends of heat dissipation flow channel (113) respectively, the height of water inlet (114) is greater than the height of water outlet (115).

4. The two-stage hybrid multifunctional instrument transformer according to claim 3, characterized in that: The water outlet (115) is provided with a sliding groove (1151) on the inner wall of the pressing plate (64), the shell (11) is provided with a through hole (116) on the outer wall of the pressing plate (64), the blocking block (55) is slidingly connected to the groove wall of the sliding groove (1151), the blocking block (55) is used for controlling the on-off of the water outlet (115), the heat-conducting column (56) is slidingly connected to the inner wall of the through hole (116), one end of the heat-conducting column (56) is fixedly connected to the blocking block (55), and the other end of the heat-conducting column (56) is fixedly connected to the memory alloy (63).

5. The two-stage hybrid multifunctional instrument transformer according to claim 4, characterized in that: The water tank (51) is provided with a water storage cavity (511), the pump shell of the water pump (52) is connected to the inner wall of the water storage cavity (511), one end of the water inlet pipe (53) is fixedly connected to the inner wall of the water inlet (114) in a coaxial manner, the other end of the water inlet pipe (53) is communicated with the outlet of the water pump (52), one end of the water outlet pipe (54) is fixedly connected to the inner wall of the water outlet (115) in a coaxial manner, and the other end of the water outlet pipe (54) is communicated with the water storage cavity (511).

6. The two-stage hybrid multifunctional instrument transformer of claim 5, wherein: The magnetic element (72) is arranged below the water outlet pipe (54), one end of the water outlet pipe (54) is provided with a connecting port (541) (23) facing the magnetic element (72), the valve rod (74) is slidingly connected to the inner wall of the connecting port (541), the valve core (75) is fixedly connected to one end of the valve rod (74), the valve core (75) is used for controlling the opening degree of the water outlet pipe (54), the other end of the valve rod (74) is fixedly connected to the metal plate (76), one end of the first spring (77) is fixedly connected to the metal plate (76), and the other end of the first spring (77) is fixedly connected to the outer wall of the water outlet pipe (54).

7. The two-stage hybrid multifunctional instrument transformer of claim 6, wherein: The magnetic element (72) comprises a first thermoelectric film (721), a second coil (722) and a phase change material (723), one end of the first thermoelectric film (721) is fixedly connected to the outer wall of the shell (11), the other end of the first thermoelectric film (721) is fixedly connected to the phase change material (723), and the second coil (722) is sleeved on the outer periphery of the first thermoelectric film (721).

8. The two-stage hybrid multifunctional instrument transformer of claim 7, wherein: Also include the second thermoelectric film (81), fixed plate (82), the first electrode piece (83), rubber ring (84), the second electrode piece (85) and electrochromic film (86), one end of the second thermoelectric film (81) is fixedly connected to the water inlet pipe (53), the other end of the second thermoelectric film (81) is fixedly connected to the water outlet pipe (54), the first electrode piece (83) is electrically connected to the second thermoelectric film (81), the fixed plate (82) is located above the magnetic element (72), the second electrode piece (85) is fixedly connected to the fixed plate (82), the first electrode piece (83) is located above the second electrode piece (85), the first electrode piece (83) is fixedly connected to the second electrode piece (85) through the rubber ring (84), and the second electrode piece (85) is electrically connected to the electrochromic film (86).

Images