A power quality controller capable of intermittently connecting to a circuit to measure voltage.

Abstract

The present invention relates to a power quality controller capable of intermittently connecting to a circuit to measure voltage, comprising a main body component and a mounting component, wherein the left end of the main body component is connected to an adjustment component, the mounting component is located above the main body component, and a voltage measuring component is installed inside the main body component, wherein the voltage measuring component comprises a battery, a third wire, a second heating resistor, a jacket, a lifting electrode, a voltmeter and a first terminal. The beneficial effects of the present invention are as follows: the power quality controller capable of intermittently connecting to a circuit to measure voltage can perform collision buffering and automatic reset, the device is convenient for installing and fixing additional equipment, the device can automatically adjust the resistance value of the shared resistor when the voltage is enhanced, thereby reducing the voltage increase of the power quality controller and reducing damage to the device, the device can intermittently measure voltage and increase the service life of the voltmeter, and the device can reduce the bending of the wire and protect the wire.

Description

Technical Field

[0001] The invention relates to the technical field of power quality control, in particular to a power quality controller capable of intermittently accessing a circuit to measure voltage. Background Art

[0002] The power quality controller is designed for the working conditions of industrial large-capacity nonlinear loads such as rectifiers, inverters, large UPS, medium-frequency furnaces, arc furnaces, etc. Its function is to solve the power supply quality, reduce electricity costs, and ensure the safety of the power supply system.

[0003] When the existing power quality controller is working, the voltmeter is continuously connected to the circuit, so that the voltmeter will work uninterruptedly for a long time, which is easy to reduce the service life of the voltmeter and make the voltmeter prone to damage.

[0004] Therefore, it is necessary to design a power quality controller that can intermittently access the circuit to measure voltage to address the above problems. Summary of the invention

[0005] The object of the present invention is to provide a power quality controller capable of intermittently connecting to a circuit to measure voltage, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a power quality controller capable of intermittently connecting to a circuit to measure voltage, comprising a main body component and an installation component, wherein the left end of the main body component is connected to an adjustment component, and a control component is arranged inside the adjustment component, the installation component is located above the main body component, and a voltage measuring component is arranged inside the main body component, the voltage measuring component comprises a battery, a third wire, a second heating resistor, a jacket, a lifting electrode, a voltmeter and a first terminal, and the left and right sides of the battery are connected to the third wire, the rear end of the third wire is connected to the second heating resistor, and a jacket is arranged outside the second heating resistor, the lower end of the jacket is penetrated by the lifting electrode, and the side of the lifting electrode close to the central axis of the main body component is connected to the voltmeter, and the side of the lifting electrode away from the central axis of the main body component is connected to the first terminal.

[0007] Furthermore, the main component includes a shell, an electromagnet, a universal wheel and a power quality controller body, and the electromagnet is installed in the middle of the lower end of the shell, the universal wheel is installed around the lower end of the shell, and the internal front wall of the main component is penetrated by the power quality controller body.

[0008] Furthermore, the rear end of the power quality controller body is connected to an external connection component, and the rear end of the external connection component is connected to a tensioning component, a box component is installed on the inner lower wall of the shell, and a ground magnet is placed inside the box component.

[0009] Furthermore, the mounting assembly includes a first spring, a support plate and a telescopic rod, wherein the support plate is disposed at the upper end of the first spring, and the telescopic rod is disposed on the left and right sides of the first spring.

[0010] Furthermore, the mounting assembly also includes a rotating head, a connecting column, a second spring, a head rod, a movable head and a fixed hook, and the rotating head is connected to the side of the telescopic rod away from the central axis of the pallet, the interior of the rotating head is wrapped with the connecting column, and the exterior of the rotating head is wrapped with the second spring, the second spring is connected to the head rod on the side away from the central axis of the pallet, and the head rod is connected to the movable head on the side away from the central axis of the pallet, and the movable head is movably connected to the fixed hook on the side away from the central axis of the pallet.

[0011] Furthermore, the adjustment component includes an outer box, a sliding rheostat, a sliding head, a first wire and a second wire, and the sliding rheostat is installed inside the outer box, and the upper end of the sliding rheostat is slidably connected to the sliding head, the left end of the sliding rheostat is connected to the first wire, and the right end of the sliding rheostat is connected to the second wire.

[0012] Furthermore, the control component includes a wrapping box, a sodium thiosulfate crystal block, a gas storage box, a first heating resistor, a connecting electrode and a moving rod, and the interior of the wrapping box is filled with the sodium thiosulfate crystal block, the interior of the sodium thiosulfate crystal block is wrapped with a gas storage box, and the interior of the gas storage box is installed with a first heating resistor, the left end of the first heating resistor is welded with a connecting electrode, and the right end of the gas storage box is penetrated by a moving rod.

[0013] Furthermore, the box assembly includes an outer frame, a drawer, a partition and a mounting column, and the drawer is pull-out mounted inside the outer frame, a partition is placed in the middle of the drawer, and a mounting column is fixed to the lower end of the drawer.

[0014] Furthermore, the external connection component includes a second terminal, a fourth wire, an outer sheath and a wire threading frame, and the lower end of the second terminal is connected to the fourth wire, the outside of the fourth wire is wrapped with an outer sheath, and the front end of the outer sheath is connected to the wire threading frame.

[0015] Furthermore, the tensioning assembly includes a first straight rod, a connecting pin, a second straight rod, a third straight rod and a third spring, and the connecting pin runs through the interior of the first straight rod, the rear end of the first straight rod is connected to the second straight rod, and the upper end of the second straight rod is connected to the third straight rod, and the side of the third straight rod away from the central axis of the main assembly is connected to the third spring.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the device can perform collision buffering and automatic reset, the device is convenient for installing and fixing additional equipment, the device can automatically adjust the resistance value of the shared resistor when the voltage is enhanced, thereby reducing the voltage increase of the power quality controller and reducing damage to the equipment, the device can intermittently measure the voltage and increase the service life of the voltmeter, and the device can reduce the bending of the wires and protect the wires.

[0017] 1. During installation, the present invention can first punch a hole in the ground magnet and fix it to the ground, and then the device can be limited by the magnetic attraction of the ground magnet and the electromagnet. At the same time, when the device is not rigidly connected, it can move when it is hit, thereby reducing the impact damage to the device. At the same time, after the impact and dislocation, the device can be adsorbed to its original position by magnetic force, thereby automatically resetting the device.

[0018] 2. The present invention places the equipment that needs to be installed on the support plate and then presses it downward. Then, the head rod is lengthened by the telescopic structure between the rotating head and the head rod. The angle of the fixing hook is adjusted by the rotating connection between the rotating head and the connecting column and the rotating connection between the movable head and the fixing hook, so that the fixing hook can be hooked on the mounting ring on the side of the additional equipment. The additional equipment can be fixed by the second spring and the first spring, thereby facilitating the installation and fixation of the additional equipment.

[0019] 3. When the voltage in the circuit of the present invention increases, the heat emitted by the first heating resistor can be increased, so that the chlorine stored in the gas storage box can be heated up and expanded, pushing out the moving rod, thereby adjusting the position of the sliding head, changing the resistance value of the sliding rheostat connected to the circuit, dividing the voltage, and reducing the voltage borne by the equipment. At the same time, the sodium thiosulfate crystal block inside the package box can quickly absorb the leaked chlorine to prevent the danger caused by the leakage of chlorine.

[0020] 4. The battery of the present invention supplies power to the second heating resistor through the third wire, so that the second heating resistor heats the gas inside the jacket to expand. When the battery is low on power, the temperature of the second heating resistor will drop, causing the air inside the jacket to shrink, causing the lifting electrode to rise and contact the first terminal, so that the voltmeter can detect the voltage of the device. While detecting the voltage, the battery will also be charged, so that the second heating resistor will heat up again and the lifting electrode will be separated from the first terminal, thereby achieving intermittent voltage detection, reducing the use time of the voltmeter, and protecting the voltmeter.

[0021] 5. The present invention can pull the second straight rod rotatably connected to the third straight rod through the third spring, so that the first straight rod can be forced to pull the external connection component, which can assist in fixing the power quality controller body and prevent the power quality controller body from shaking when it is loosely installed. At the same time, the middle part of the connecting pin is connected to the outer wrapping sleeve, so that the fourth wire can be in a straightened state, which can reduce the bending damage of the fourth wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a formal structural schematic diagram of a power quality controller capable of intermittently connecting to a circuit to measure voltage according to the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional external structure of a power quality controller capable of intermittently connecting to a circuit to measure voltage according to the present invention;

[0024] Figure 3 It is a cross-sectional enlarged structural schematic diagram of a regulating component of a power quality controller capable of intermittently connecting to a circuit to measure voltage according to the present invention;

[0025] Figure 4 It is a schematic diagram of an enlarged cross-sectional structure of a control component of a power quality controller capable of intermittently connecting to a circuit to measure voltage according to the present invention;

[0026] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of a power quality controller capable of intermittently connecting to a circuit to measure voltage according to the present invention;

[0027] Figure 6 It is a three-dimensional cross-sectional structural diagram of a box assembly of a power quality controller capable of intermittently connecting to a circuit to measure voltage according to the present invention;

[0028] Figure 7 The present invention is a schematic diagram of the three-dimensional structure of a voltage measuring component of a power quality controller capable of intermittently connecting to a circuit to measure voltage.

[0029] In the figure: 1. Main assembly; 101. Shell; 102. Electromagnet; 103. Universal wheel; 104. Power quality controller body; 2. Mounting assembly; 201. First spring; 202. Support plate; 203. Telescopic rod; 204. Rotating head; 205. Connecting column; 206. Second spring; 207. Head rod; 208. Movable head; 209. Fixing hook; 3. Adjustment assembly; 301. Outer box; 302. Sliding rheostat; 303. Sliding head; 304. First wire; 305. Second wire; 4. Control assembly; 401. Parcel box; 402. Sodium thiosulfate crystal block; 403. Gas storage box; 404. First heating resistor ; 405, connecting electrode; 406, moving rod; 5, box assembly; 501, outer frame; 502, drawer; 503, partition; 504, mounting column; 6, ground magnet; 7, voltage measuring assembly; 701, battery; 702, third wire; 703, second heating resistor; 704, outer jacket; 705, lifting electrode; 706, voltmeter; 707, first terminal; 8, external connection assembly; 801, second terminal; 802, fourth wire; 803, outer wrapping sleeve; 804, threading rack; 9, tensioning assembly; 901, first straight rod; 902, connecting pin; 903, second straight rod; 904, third straight rod; 905, third spring. DETAILED DESCRIPTION

[0030] like Figures 1 to 7 As shown, the present invention provides a technical solution: a power quality controller capable of intermittently connecting to a circuit to measure voltage, comprising a main component 1 and an installation component 2, wherein the left end of the main component 1 is connected with an adjustment component 3, and a control component 4 is arranged inside the adjustment component 3, the installation component 2 is located above the main component 1, and a voltage measuring component 7 is arranged inside the main component 1, the voltage measuring component 7 comprises a battery 701, a third wire 702, a second heating resistor 703, a jacket 704, a lifting electrode 705, a voltmeter 706 and a first terminal 707, and the left and right sides of the battery 701 are connected with the third wire 702, the rear end of the third wire 702 is connected with the second heating resistor 703, and the outer part of the second heating resistor 703 is provided with a jacket 704, the lower end of the jacket 704 is penetrated with a lifting electrode 705, and the side of the lifting electrode 705 close to the central axis of the main component 1 is connected with the voltmeter 706, and the side of the lifting electrode 705 away from the central axis of the main component 1 is connected with the first terminal 707;

[0031] The specific operation is as follows: the installation component 2 can facilitate the connection of external devices to the main component 1, the control component 4 can control the adjustment component 3 to adjust the voltage of the device, the battery 701 supplies power to the second heating resistor 703 through the third wire 702, so that the second heating resistor 703 heats and expands the gas inside the jacket 704. When the battery 701 is low on power, the temperature of the second heating resistor 703 will drop, thereby shrinking the air inside the jacket 704 and causing the lifting electrode 705 to rise and contact the first terminal 707, so that the voltmeter 706 detects the voltage of the device. While detecting the voltage, the battery 701 will also be charged, so that the second heating resistor 703 will heat up again and the lifting electrode 705 will be separated from the first terminal 707, thereby realizing intermittent voltage detection, reducing the use time of the voltmeter 706, and protecting the voltmeter 706.

[0032] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the main component 1 includes a shell 101, an electromagnet 102, a universal wheel 103 and a power quality controller body 104, and the electromagnet 102 is installed in the middle of the lower end of the shell 101, and the universal wheel 103 is installed around the lower end of the shell 101, and the power quality controller body 104 is penetrated by the internal front wall of the main component 1, the rear end of the power quality controller body 104 is connected to the external connection component 8, and the rear end of the external connection component 8 is connected to the tensioning component 9, and the box component 5 is installed on the inner lower wall of the shell 101, and the ground magnet 6 is placed inside the box component 5;

[0033] The ground magnet 6 can be firstly fixed to the ground by drilling a hole, and the shell 101 can be moved by the universal wheel 103. Then, the device can be limited by the magnetic attraction of the ground magnet 6 and the electromagnet 102. At the same time, when it is not a rigid connection, the device can be moved when it is hit, thereby reducing the impact damage to the device. At the same time, after the impact and dislocation, the device can be adsorbed to the original position by magnetic force, thereby automatically resetting the device. The external connection component 8 can connect the power quality controller body 104 with other external devices, the tensioning component 9 can tighten the external connection component 8, and the box component 5 can store items and tools.

[0034] like Figure 1As shown, the mounting assembly 2 includes a first spring 201, a support plate 202 and a telescopic rod 203, and the support plate 202 is arranged on the upper end of the first spring 201, and the telescopic rod 203 is arranged on the left and right sides of the first spring 201, the mounting assembly 2 also includes a rotating head 204, a connecting column 205, a second spring 206, a head rod 207, a movable head 208 and a fixing hook 209, and the side of the telescopic rod 203 away from the central axis of the support plate 202 is connected to the rotating head 204, the interior of the rotating head 204 is wrapped with the connecting column 205, and the exterior of the rotating head 204 is wrapped with the second spring 206, the side of the second spring 206 away from the central axis of the support plate 202 is connected to the head rod 207, and the side of the head rod 207 away from the central axis of the support plate 202 is connected to the movable head 208, and the side of the movable head 208 away from the central axis of the support plate 202 is movably connected to the fixing hook 209;

[0035] Place the device to be installed on the support plate 202 and press it down. Then, lengthen the head rod 207 through the telescopic structure between the rotating head 204 and the head rod 207. Adjust the angle of the fixing hook 209 through the rotating connection between the rotating head 204 and the connecting column 205 and the rotating connection between the movable head 208 and the fixing hook 209, so that the fixing hook 209 can be hooked on the mounting ring on the side of the additional device. The additional device can be fixed by the second spring 206 and the first spring 201, so as to facilitate the installation and fixation of the additional device. The telescopic rod 203 can limit the support plate 202.

[0036] like Figure 3 and Figure 4 As shown, the adjustment component 3 includes an outer box 301, a sliding rheostat 302, a sliding head 303, a first wire 304 and a second wire 305, and the sliding rheostat 302 is installed inside the outer box 301, and the upper end of the sliding rheostat 302 is slidably connected to the sliding head 303, the left end of the sliding rheostat 302 is connected to the first wire 304, and the right end of the sliding rheostat 302 is connected to the second wire 305, and the control component 4 includes a packaging box 401, sodium thiosulfate crystals The package box 401 is filled with sodium thiosulfate crystal block 402, the gas storage box 403 is wrapped with the sodium thiosulfate crystal block 402, and the first heating resistor 404 is installed in the gas storage box 403, the left end of the first heating resistor 404 is welded with the connecting electrode 405, and the right end of the gas storage box 403 is penetrated by the moving rod 406;

[0037] When the voltage in the circuit increases, the heat emitted by the first heating resistor 404 can increase, so that the chlorine stored in the gas storage box 403 can be heated up and expanded, pushing out the moving rod 406, thereby adjusting the position of the sliding head 303, changing the resistance value of the sliding rheostat 302 connected to the circuit, dividing the voltage, and reducing the voltage borne by the equipment. At the same time, the sodium thiosulfate crystal block 402 inside the wrapping box 401 can quickly absorb the leaked chlorine to prevent the danger caused by chlorine leakage. The outer box 301 can isolate and protect the sliding rheostat 302 and the sliding head 303. The first wire 304 and the second wire 305 can respectively connect the input and output ends of the sliding rheostat 302. The connecting electrode 405 can facilitate the first heating resistor 404 to be connected to the circuit.

[0038] like Figure 6 As shown, the box assembly 5 includes an outer frame 501, a drawer 502, a partition 503 and a mounting column 504, and the drawer 502 is installed inside the outer frame 501, the partition 503 is placed in the middle of the drawer 502, and the mounting column 504 is fixed at the lower end of the drawer 502;

[0039] The drawer 502 is pulled out through the pull-out structure between the drawer 502 and the outer frame 501 , and then the partition 503 is opened, the ground magnet 6 is rotated, and the ground magnet 6 is removed through the threaded connection between the ground magnet 6 and the mounting column 504 .

[0040] like Figure 5 As shown, the external connection component 8 includes a second terminal 801, a fourth wire 802, an outer sheath 803 and a threading frame 804, and the lower end of the second terminal 801 is connected to the fourth wire 802, the outer portion of the fourth wire 802 is wrapped with the outer sheath 803, and the front end of the outer sheath 803 is connected to the threading frame 804;

[0041] The middle part of the connecting pin 902 is connected to the outer wrapping sleeve 803, so that the fourth wire 802 can be in a straightened state, which can reduce the bending damage of the fourth wire 802. The second terminal 801 can facilitate the connection of the fourth wire 802 to the power quality controller body 104, and the wire rack 804 can organize the fourth wire 802.

[0042] like Figure 5 As shown, the tensioning assembly 9 includes a first straight rod 901, a connecting pin 902, a second straight rod 903, a third straight rod 904 and a third spring 905, and the connecting pin 902 runs through the interior of the first straight rod 901, the rear end of the first straight rod 901 is connected to the second straight rod 903, and the upper end of the second straight rod 903 is connected to the third straight rod 904, and the side of the third straight rod 904 away from the central axis of the main assembly 1 is connected to the third spring 905;

[0043] The third spring 905 can pull the second straight rod 903 rotatably connected to the third straight rod 904, so that the first straight rod 901 can be forced to pull the external connection component 8, which can assist in fixing the power quality controller body 104 and prevent the power quality controller body 104 from shaking when the installation is loose.

[0044] Working principle: first, pull out the drawer 502 through the pull-out structure between the drawer 502 and the outer frame 501, then open the partition 503, rotate the ground magnet 6, remove the ground magnet 6 through the threaded connection between the ground magnet 6 and the mounting column 504, then punch a hole in the ground and fix the ground magnet 6 to the ground, then use the universal wheel 103 to deduce the installation position of the ground magnet 6 from the shell 101, turn on the electromagnet 102, and the device can be adsorbed by the magnetic attraction of the ground magnet 6 and the electromagnet 102, so that the device stays at the specified position. At the same time, when it is not a rigid connection, the device can be moved when it is hit, thereby reducing the impact damage to the device. After the impact and dislocation, the device can also be adsorbed to the original position by magnetic force, and the additional installation is required. The device is placed on the support plate 202 and then pressed downward. The head rod 207 is then stretched by the telescopic structure between the rotating head 204 and the head rod 207. The angle of the fixing hook 209 is adjusted by the rotating connection between the rotating head 204 and the connecting column 205 and the rotating connection between the movable head 208 and the fixing hook 209, so that the fixing hook 209 can be hooked on the mounting ring on the side of the additional device. The second spring 206 and the first spring 201 can respectively apply force to the head rod 207 and the support plate 202 to fix the additional device. When the device is working, the voltage in the circuit increases, which can increase the heat emitted by the first heating resistor 404, so that the chlorine gas stored in the gas storage box 403 can be heated up and expanded, pushing out the moving rod 406 to make the moving rod 406 move. The movable rod 406 drives the sliding head 303 to move, adjusts the position of the sliding head 303, changes the resistance value of the sliding rheostat 302 connected to the circuit, performs voltage division, reduces the voltage borne by the power quality controller body 104, and protects the circuit. At the same time, the sodium thiosulfate crystal block 402 inside the parcel box 401 can quickly absorb the leaked chlorine gas. At the same time, the battery 701 supplies power to the second heating resistor 703 through the third wire 702, so that the second heating resistor 703 heats and expands the gas inside the jacket 704. When the battery 701 is low on power, the temperature of the second heating resistor 703 will decrease, causing the air inside the jacket 704 to shrink, so that the lifting electrode 705 rises and contacts the first terminal 707. The circuit where the voltmeter 706 is located is turned on, so that the voltmeter 706 detects the voltage of the device. While detecting the voltage, the battery 701 is also charged, so that the second heating resistor 703 heats up again, and the lifting electrode 705 is separated from the first terminal 707, so as to achieve intermittent voltage detection. The third spring 905 of the device can pull the second straight rod 903 rotatably connected to the third straight rod 904, so that the first straight rod 901 is forced to pull the external connection component 8, which can assist in fixing the power quality controller body 104 to prevent the power quality controller body 104 from shaking when it is loosely installed. At the same time, the middle part of the connecting pin 902 is connected to the outer package sleeve 803, so that the fourth wire 802 can be in a straightened state.The bending damage of the fourth wire 802 can be reduced, thereby protecting the device.

Claims

1. A power quality controller capable of intermittently accessing a circuit to measure voltage, characterized in that: The invention comprises a main body component (1) and a mounting component (2), wherein the left end of the main body component (1) is connected to an adjustment component (3), and a control component (4) is arranged inside the adjustment component (3), the mounting component (2) is located above the main body component (1), and a voltage measuring component (7) is arranged inside the main body component (1), and the voltage measuring component (7) comprises a battery (701), a third wire (702), a second heating resistor (703), a jacket (704), a lifting electrode (705), a voltmeter (706) and a first terminal (707), and the battery The left and right sides of (701) are connected to third wires (702), the rear end of the third wires (702) is connected to a second heating resistor (703), and a jacket (704) is provided outside the second heating resistor (703), the jacket (704) contains air, a lifting electrode (705) penetrates the lower end of the jacket (704), and a voltmeter (706) is connected to the side of the lifting electrode (705) close to the central axis of the main component (1), and a first terminal (707) is connected to the side of the lifting electrode (705) away from the central axis of the main component (1); The regulating assembly (3) comprises an outer box (301), a sliding rheostat (302), a sliding head (303), a first wire (304) and a second wire (305); the sliding rheostat (302) is installed inside the outer box (301), the upper end of the sliding rheostat (302) is slidably connected to the sliding head (303), the left end of the sliding rheostat (302) is connected to the first wire (304), and the right end of the sliding rheostat (302) is connected to the second wire (305); The control component (4) comprises a wrapping box (401), a sodium thiosulfate crystal block (402), a gas storage box (403), a first heating resistor (404), a connecting electrode (405) and a moving rod (406), wherein the interior of the wrapping box (401) is filled with the sodium thiosulfate crystal block (402), the interior of the sodium thiosulfate crystal block (402) is wrapped with the gas storage box (403), and the interior of the gas storage box (403) is installed with the first heating resistor (404), the left end of the first heating resistor (404) is welded with the connecting electrode (405), and the right end of the gas storage box (403) is penetrated by the moving rod (406).

2. A power quality controller capable of intermittently connecting to a circuit to measure voltage according to claim 1, characterized in that: The main body component (1) comprises a shell (101), an electromagnet (102), a universal wheel (103) and a power quality controller body (104); the electromagnet (102) is installed in the middle of the lower end of the shell (101); the universal wheels (103) are installed around the lower end of the shell (101); and the power quality controller body (104) penetrates the inner front wall of the main body component (1).

3. A power quality controller capable of intermittently accessing a circuit to measure voltage according to claim 2, characterized in that: The rear end of the power quality controller body (104) is connected to an external connection component (8), and the rear end of the external connection component (8) is connected to a tensioning component (9); a box component (5) is installed on the inner lower wall of the housing (101), and a ground magnet (6) is placed inside the box component (5).

4. A power quality controller capable of intermittently accessing a circuit to measure voltage according to claim 1, characterized in that: The mounting assembly (2) comprises a first spring (201), a support plate (202) and a telescopic rod (203), wherein the support plate (202) is arranged at the upper end of the first spring (201), and the telescopic rod (203) is arranged on the left and right sides of the first spring (201).

5. A power quality controller capable of intermittently accessing a circuit to measure voltage according to claim 4, characterized in that: The mounting assembly (2) further comprises a rotating head (204), a connecting column (205), a second spring (206), a head rod (207), a movable head (208) and a fixed hook (209), wherein the side of the telescopic rod (203) away from the central axis of the support plate (202) is connected to the rotating head (204), the interior of the rotating head (204) is wrapped with the connecting column (205), and the exterior of the rotating head (204) is wrapped with the second spring (206), the side of the second spring (206) away from the central axis of the support plate (202) is connected to the head rod (207), and the side of the head rod (207) away from the central axis of the support plate (202) is connected to the movable head (208), and the side of the movable head (208) away from the central axis of the support plate (202) is movably connected to the fixed hook (209).

6. A power quality controller capable of intermittently connecting to a circuit to measure voltage according to claim 3, characterized in that: The box assembly (5) comprises an outer frame (501), a drawer (502), a partition (503) and a mounting column (504), wherein the drawer (502) is installed inside the outer frame (501) in a drawable manner, a partition (503) is placed in the middle of the drawer (502), and a mounting column (504) is fixed to the lower end of the drawer (502).

7. A power quality controller capable of intermittently connecting to a circuit to measure voltage according to claim 3, characterized in that: The external connection component (8) comprises a second terminal (801), a fourth wire (802), an outer sheath (803) and a wire threading frame (804), wherein the lower end of the second terminal (801) is connected to the fourth wire (802), the outer portion of the fourth wire (802) is wrapped with the outer sheath (803), and the front end of the outer sheath (803) is connected to the wire threading frame (804).

8. The power quality controller capable of intermittently connecting to a circuit to measure voltage according to claim 3, characterized in that: The tensioning assembly (9) comprises a first straight rod (901), a connecting pin (902), a second straight rod (903), a third straight rod (904) and a third spring (905), wherein the connecting pin (902) runs through the interior of the first straight rod (901), the rear end of the first straight rod (901) is connected to the second straight rod (903), the upper end of the second straight rod (903) is connected to the third straight rod (904), and the third spring (905) is connected to a side of the third straight rod (904) away from the central axis of the main assembly (1).

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