A method for detecting power distribution of transformer

Abstract

The invention discloses a power distribution detection method for a transformer, and relates to the technical field of power distribution testing of transformers. A water storage circulation box is fixed at the middle of the top of a total positioning plate, a bearing support plate is fixedly connected to the top of the water storage circulation box, a fixed sealing box is welded to the top of the bearing support plate, an expansion motor is symmetrically installed at one end of the fixed sealing box through a motor seat, an expansion sealing plate is clamped on the output shaft of the expansion motor, and the humidity, dryness, water volume, sand and dust and temperature in the environment are changed through a plurality of groups of different components, so that a variety of tests can be performed one by one on the same device, and a plurality of groups of different test cycles can be used in combination to further improve the test effect, solve the problem in the prior art that the test environment changes at a low speed and a variety of different test operations cannot be performed at the same time, increase the linkage between different tests, effectively improve the strength of the test, and thus ensure the accuracy of the test results.

Description

Technical Field

[0001] The invention relates to the technical field of transformer power distribution testing, and in particular to a transformer power distribution detection method. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core. Its main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc.

[0003] The patent with application number 201510423441.7 mentions "a safety detection device for transformers". This patent collects the leakage conditions of various devices of the transformer through a leakage collection module, and can detect leakage information of various parts. It also has a simulation leakage module that can detect whether the transformer leakage detection circuit is effective.

[0004] However, when testing transformers, the test environment is changed at a low speed when the test equipment is tested, and multiple test conditions cannot be operated simultaneously, resulting in a small test range. This causes the equipment to be replaced repeatedly when multiple groups of tests are required, and the tests cannot be linked, affecting the actual test results. Summary of the invention

[0005] The present invention provides a transformer power distribution detection method, which can effectively solve the problem raised in the above background technology that when testing the transformer, the test environment is replaced at a low speed when the test equipment is tested, and multiple test conditions cannot be operated simultaneously, resulting in a small test range during testing, resulting in the need to repeatedly replace equipment when multiple groups of tests are required, and the tests cannot be linked, which affects the actual test results.

[0006] To achieve the above object, the present invention provides the following technical solution: a transformer power distribution detection method, comprising the following steps:

[0007] S1. Loading and power connection: The transformer is placed at the test position through the total positioning plate, the synchronous electric push rod drives the sliding shaped plate, the in-and-out hydraulic cylinder drives the in-and-out support plate, the in-and-out electric slide rail drives the inner hole processing block and the extraction hydraulic cylinder drives the clamping electromagnet, and the transformer is connected to the power connection position by the power connection equipment;

[0008] S2. Environmental adjustment: Change the internal environmental temperature through the condensing cooler and the electric heating fixture, cooperate with the impact hydraulic cylinder to drive the impact destruction block, enter the pipe rack, sprinkler head, booster pump, L-shaped circulation pipe, circulation fan, special-shaped circulation pipe rack, convection fan and sand inlet cage to adjust the humidity and temperature of the environment;

[0009] S3, environmental test: by fixing the special-shaped sleeve, rotating the motor, unfolding the special-shaped sleeve and contacting the detection head, the transformer detection position is combined and operated, the transformer is affected by the change of temperature and humidity, and the test data is recorded by the transformer tester;

[0010] S4, cycle test, through the shift fixed box, processing motor, processing screw and bidirectional screw to drive the sliding fixed block, limit electromagnet and shift support block to move, change the position of the transformer and the test environment;

[0011] S5. Data analysis: Collect the test data and compare and analyze the data to understand the actual operating limits and stable operating environment of the transformer.

[0012] According to the above technical solution, a plurality of energy measuring components are arranged on the top of the sum positioning plate;

[0013] The multi-position energy measurement assembly includes a water storage circulation box;

[0014] A water storage circulation box is fixed to the middle of the top of the sum positioning plate, a bearing support plate is fixedly connected to the top of the water storage circulation box, a fixed sealing box is welded to the top of the bearing support plate, an expansion motor is symmetrically installed on one end of the fixed sealing box through a motor seat, an expansion sealing plate is clamped on the output shaft of the expansion motor, a condenser cooler is fixed to the side end of the expansion sealing plate, a plurality of drainage treatment holes are equidistantly penetrated and connected on one side of the top of the bearing support plate, and an electric heating fixture is symmetrically installed on the top of the bearing support plate;

[0015] A plurality of linkage electric push rods are symmetrically installed at the top of the fixed sealing box, a fixed special-shaped sleeve is installed at the bottom of the linkage electric push rod, a rotating motor is installed at the bottom of the side end of the fixed special-shaped sleeve through a motor seat, an expansion special-shaped sleeve is clamped on the output shaft of the rotating motor, a contact detection head is embedded and installed inside the fixed special-shaped sleeve and the expansion special-shaped sleeve, one end of the contact detection head is connected to a connecting wire, and transformer testers are symmetrically installed at the positions of the connecting wires at both ends of the fixed sealing box;

[0016] An inlet pipe rack is connected between the water storage circulation box and the fixed sealing box, and a plurality of sprinkler heads are installed at equal distances at the bottom of the inlet pipe rack. A booster pump is installed at one end of the water storage circulation box at a position corresponding to the inlet pipe rack through a motor seat;

[0017] Both ends of the fixed sealed box are fixed with choke drying boxes, one end of the choke drying box is clamped with an adsorption electromagnet, a drying mesh cage is inserted into the side end of the choke drying box at the position corresponding to the adsorption electromagnet, a number of extraction fixed pipes are equidistantly connected through the top of the fixed sealed box and the top of the choke drying box, a number of circulation reflux pipes are equidistantly connected through the bottom of the side end of the fixed sealed box and the bottom of the choke drying box, and a linkage fan is installed at one end of the circulation reflux pipe.

[0018] According to the above technical solution, lifting electric push rods are fixed at both ends of the fixed sealed box, and sealing clamping plates are fixed at the tops of the two lifting electric push rods corresponding to the positions of the fixed sealed box, a number of temperature detectors are equidistantly installed at the top of the fixed sealed box, a humidity detector is installed at the top of the fixed sealed box near the position of the temperature detector, a number of impact hydraulic cylinders are equidistantly installed at the top and both ends of the fixed sealed box, and an impact destruction block is installed at one end of the impact hydraulic cylinder;

[0019] The two ends of the fixed sealed box are symmetrically connected with L-shaped circulation pipes, and the side ends of the L-shaped circulation pipes are equidistantly embedded with a plurality of circulation fans, and one end of the L-shaped circulation pipe is inserted into a limited position blocking sleeve, and the two ends of the inner side of the fixed sealed box are symmetrically installed with closed electric slide rails, and one end of the closed electric slide rail is installed with a closed sealing plate;

[0020] A special-shaped circulation pipe rack is connected through the side end of one of the unfolded sealing plates and the top of the fixed sealing box, and a number of convection fans are equidistantly installed on the top of the side end of the special-shaped circulation pipe rack. A threaded support pipe is connected through one end of the special-shaped circulation pipe rack, and a sand inlet net cage is connected to the side end of the threaded support pipe by a thread. Closed electric push rods are symmetrically installed on the side end of the sand inlet net cage, and a movable switching plate is installed between the two closed electric push rods. The water storage circulation box and one end of the fixed sealing box are connected through the inlet and outlet processing pipes, and the L-shaped circulation pipe, the special-shaped circulation pipe rack and one end of the inlet and outlet processing pipes are all embedded with control valves.

[0021] According to the above technical solution, the sealing clamping plate is inserted and installed inside the fixed sealing box, the expanding sealing plate is rotatably installed on the side end of the fixed sealing box, the expanding special-shaped sleeve is rotatably combined with the fixed special-shaped sleeve, and one end of the connecting wire is connected to one end of the transformer tester.

[0022] According to the above technical solution, the impact destruction block is placed inside the fixed sealing box, the spray head is clamped and installed on the top of the inner side of the fixed sealing box, and one end of the booster pump is connected to one end of the pipe rack through an adapter.

[0023] According to the above technical solution, the closed sealing plate is slidably installed on the inner end of the fixed sealing box, the side end of the closed sealing plate is fitted with the side end of the L-shaped circulation pipe, and the adsorption electromagnet is magnetically connected to the drying cage.

[0024] According to the above technical solution, the movable switching plate is slidably connected with the sand inlet cage;

[0025] The input ends of the lifting electric push rod, the unfolding motor, the condensing cooler, the electric heating fixer, the temperature detector, the humidity detector, the linkage electric push rod, the rotating motor, the transformer tester, the impact hydraulic cylinder, the booster pump, the circulating fan, the closing electric slide rail, the adsorption electromagnet, the linkage fan, the convection fan, the closing electric push rod and the control valve are all electrically connected to the output end of the external controller;

[0026] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0027] According to the above technical solution, a feed switching assembly is provided at the top of the total positioning plate;

[0028] The feed switching assembly includes a positioning support bar;

[0029] Positioning support strips are symmetrically installed on both sides of the top of the total positioning plate, synchronous electric push rods are symmetrically installed at both ends of the water storage circulation box, a sliding special-shaped plate is installed at one end of the synchronous electric push rod, a plurality of in-and-out hydraulic cylinders are equidistantly installed at the bottom of the sliding special-shaped plate, in-and-out support plates are installed at the tops of the plurality of in-and-out hydraulic cylinders, in-and-out electric slide rails are symmetrically engaged at the tops of the sliding special-shaped plates, an inner hole processing block is connected to the tops of the two in-and-out electric slide rails through a slide rail seat, an extraction hydraulic cylinder is installed at one end of the inner hole processing block, and a locking electromagnet is installed at one end of the extraction hydraulic cylinder;

[0030] A shift fixing box is symmetrically installed on the top of the bearing support plate, and a processing motor is installed on one end of the shift fixing box through a motor seat, one of the shift fixing boxes is rotatably connected to a processing screw rod on the inner side, and the other shift fixing box is rotatably connected to a bidirectional screw rod on the inner side, and the side ends of the processing screw rod and the bidirectional screw rod are connected to a sliding fixing block through a slide rail seat, and a limiting electromagnet is engaged with the top of the sliding fixing block, and a shift support block is symmetrically slidably connected to the inner side of the shift fixing box, and a plurality of buffer fixing holes are equidistantly provided on the top of the shift support block, and a fixing electromagnet is installed on the top of the shift support block, and a sealed electric slide rail is symmetrically installed on the side end of the shift fixing box, and a U-shaped processing plate is installed on one end of the sealed electric slide rail.

[0031] According to the above technical solution, the side end of the sliding special-shaped plate is fitted with the side end of the positioning support bar, the entry and exit support plate is slidably fitted with the sliding special-shaped plate, and the inner hole processing block is slidably installed on the top of the sliding special-shaped plate.

[0032] According to the above technical solution, one end of the processing screw rod and the bidirectional screw rod are both clamped with the output shafts of the two processing motors, and the limit electromagnet is magnetically connected with the shift support block;

[0033] The input ends of the synchronous electric push rod, the in-and-out hydraulic cylinder, the in-and-out electric slide rail, the extraction hydraulic cylinder, the engaging electromagnet, the processing motor, the limit electromagnet, the fixing electromagnet and the sealed electric slide rail are all electrically connected to the output end of the external controller.

[0034] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0035] 1. It is equipped with multiple energy measurement components. The lifting electric push rod drives the sealing clamping plate to lift and clamp, and the unfolding motor drives the sealing plate to rotate and clamp, so as to achieve the isolation of internal and external environments and the separation of internal environments, so that the same equipment can be used for different tests. The internal temperature is changed by the condensing cooler and the electric heating fixture, and the internal humidity is changed by entering the pipe rack, the sprinkler head and the booster pump. In addition, the inlet and outlet treatment pipes and the control valve are used to realize the internal water filling, so as to realize the transformer operation test at different temperatures, different humidity and different water depths, so as to test the working limit and the best working state of the transformer under the conditions of humid and water-immersed environment and rapid temperature change;

[0036] The air is driven to flow inside through the choke drying box, drying cage, extraction fixed pipe, circulation return pipe and linkage fan to achieve air drying. The condenser cooler and electric heating fixture are used to realize the operation state of the transformer under different drying environments and with rapid temperature changes. The sand and dust flow is controlled by the special-shaped circulation pipe rack, convection fan, sand inlet cage and control valve, so as to further test the impact of harsh environment on the transformer and its stable operation state.

[0037] Through multiple groups of different components, the humidity, dryness, water volume, dust and temperature in the environment are changed, so that multiple tests can be carried out one by one on the same device, and multiple groups of different test cycles can be used in combination to further improve the test effect. By moving the transformer at both ends of the isolation device, the working environment can be quickly switched, which solves the problem in the prior art that the test environment changes slowly and multiple different test operations cannot be carried out at the same time, increases the linkage between different tests, and effectively improves the strength of the test, thereby ensuring the accuracy of the test results.

[0038] 2. A feeding switching component is provided, and the in-and-out hydraulic cylinder drives the in-and-out support plate to rise and fall, and the in-and-out electric slide rail drives the inner hole processing block to move, so that the engaging electromagnet fits the side end of the transformer, and the transformer is pushed to move by extracting the hydraulic cylinder and the engaging electromagnet. The processing motor, the processing screw rod and the bidirectional screw rod drive the sliding fixed block, the limit electromagnet and the shift support block to move, so that the loading fixed position of the transformer can be changed according to the test requirements during loading, and independent operation and continuous back and forth operation can be realized, which ensures the fixed speed and feeding speed of the product while ensuring the comprehensive testing of the product and the test effect, and uses multiple groups of components to cooperate with each other, so that the product can be accurately aligned and supported during loading, avoiding the situation of upper displacement from the test position, further ensuring the stability of the test, and effectively ensuring the accuracy of the test results.

[0039] In summary, through the cooperation of the multi-position energy measurement component and the feed switching component, independent loading operations can be performed according to the actual test needs, and the position of the transformer can be switched, so that the environment of the transformer can be quickly changed during the test, thereby improving the test efficiency. At the same time, the back and forth movement is used to realize the equipment transposition operation, which effectively cooperates with some tests. Through the cooperation of multiple components, the test speed and data accuracy are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0041] In the attached picture:

[0042] Figure 1 It is a schematic flow chart of the method of the present invention;

[0043] Figure 2 It is a three-dimensional structural schematic diagram of the present invention;

[0044] Figure 3 It is a structural schematic diagram of a multi-position energy measuring assembly of the present invention;

[0045] Figure 4 It is a schematic diagram of the installation structure of the condenser and cooler of the present invention;

[0046] Figure 5 It is a schematic diagram of the installation structure of the load-bearing support plate of the present invention;

[0047] Figure 6 It is a schematic diagram of the installation structure of the L-shaped circulation pipe of the present invention;

[0048] Figure 7 It is a schematic diagram of the installation structure of the contact detection head of the present invention;

[0049] Figure 8 It is a schematic diagram of the installation structure of the flow-blocking drying oven of the present invention;

[0050] Fig. 9 It is a schematic diagram of the installation structure of the sand inlet net cage of the present invention;

[0051] Fig.10 is a schematic structural diagram of a feed switching assembly of the present invention;

[0052] Fig.11 It is a schematic diagram of the installation structure of the displacement support block of the present invention;

[0053] Numbers in the figure: 1, total positioning plate;

[0054] 2. Multi-position energy measurement components; 201. Water storage circulation box; 202. Load-bearing support plate; 203. Fixed sealing box; 204. Lifting electric push rod; 205. Sealing clamping plate; 206. Expanding motor; 207. Expanding sealing plate; 208. Condensation cooler; 209. Drainage treatment hole; 210. Electric heating fixture; 211. Temperature detector; 212. Humidity detector; 213. Linkage electric push rod; 214. Fixed special-shaped sleeve; 215. Rotating motor; 216. Expanding special-shaped sleeve; 217. Contact detection head; 218. Connecting wire; 219. Transformer tester; 220. Impact hydraulic cylinder; 221. Impact Destruction block; 222, enter the pipe rack; 223, sprinkler head; 224, booster pump; 225, L-shaped circulation pipe; 226, circulation fan; 227, limit blocking sleeve; 228, closed electric slide rail; 229, closed sealing plate; 230, flow-blocking drying box; 231, adsorption electromagnet; 232, drying net cage; 233, extraction fixed pipe; 234, circulation return pipe; 235, linkage fan; 236, special-shaped circulation pipe rack; 237, convection fan; 238, threaded support pipe; 239, sand entry net cage; 240, closed electric push rod; 241, mobile switching plate; 242, in and out processing pipe; 243, control valve;

[0055] 3. Feed switching assembly; 301. Positioning support bar; 302. Synchronous electric push rod; 303. Sliding special-shaped plate; 304. In-and-out hydraulic cylinder; 305. In-and-out support plate; 306. In-and-out electric slide rail; 307. Inner hole processing block; 308. Extraction hydraulic cylinder; 309. Engaging electromagnet; 310. Shifting fixed box; 311. Processing motor; 312. Processing screw rod; 313. Bidirectional screw rod; 314. Sliding fixed block; 315. Limiting electromagnet; 316. Shifting support block; 317. Buffering fixed hole; 318. Fixed electromagnet; 319. Sealed electric slide rail; 320. U-shaped processing plate. DETAILED DESCRIPTION

[0056] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0057] Example: Figure 1-11 As shown, the present invention provides a technical solution, a transformer power distribution detection method, comprising the following steps:

[0058] S1, loading and power connection: through the total positioning plate 1, the synchronous electric push rod 302 drives the sliding special-shaped plate 303, the in-and-out hydraulic cylinder 304 drives the in-and-out support plate 305, the in-and-out electric slide rail 306 drives the inner hole processing block 307 and the extraction hydraulic cylinder 308 drives the clamping electromagnet 309, so as to place the transformer at the test position, and use the power connection equipment to connect the transformer to the power connection position;

[0059] S2, environmental adjustment: the internal environmental temperature is changed by the condensing cooler 208 and the electric heating fixer 210, and the impact hydraulic cylinder 220 drives the impact destruction block 221, the pipe rack 222, the sprinkler head 223, the booster pump 224, the L-shaped circulation pipe 225, the circulation fan 226, the special-shaped circulation pipe rack 236, the convection fan 237 and the sand inlet cage 239 to adjust the humidity and temperature of the environment;

[0060] S3, environmental test: by fixing the special-shaped sleeve 214, rotating the motor 215, unfolding the special-shaped sleeve 216 and contacting the detection head 217, the transformer detection position is combined and operated, and the transformer is affected by the change of temperature and humidity, and the test data is recorded by the transformer tester 219;

[0061] S4, cycle test, by shifting the fixed box 310, the processing motor 311, the processing screw 312 and the bidirectional screw 313 to drive the sliding fixed block 314, the limit electromagnet 315 and the shift support block 316 to move, so as to change the position of the transformer and the test environment;

[0062] S5. Data analysis: Collect the test data and compare and analyze the data to understand the actual operating limits and stable operating environment of the transformer.

[0063] A plurality of energy measuring components 2 are arranged on the top of the sum positioning plate 1;

[0064] The multi-position energy measuring assembly 2 includes a water storage circulation box 201, a bearing support plate 202, a fixed sealing box 203, a lifting electric push rod 204, a sealing clamping plate 205, an unfolding motor 206, an unfolding sealing plate 207, a condensing cooler 208, a drainage treatment hole 209, an electric heating fixture 210, a temperature detector 211, a humidity detector 212, a linkage electric push rod 213, a fixed special-shaped sleeve 214, a rotating motor 215, an unfolding special-shaped sleeve 216, a contact detection head 217, a connecting wire 218, a transformer tester 219, an impact hydraulic cylinder 220, and an impact destroyer. block 221, inlet pipe rack 222, sprinkler head 223, booster pump 224, L-shaped circulation pipe 225, circulation fan 226, limit blocking sleeve 227, closed electric slide rail 228, closed sealing plate 229, flow-blocking drying box 230, adsorption electromagnet 231, drying net cage 232, extraction fixed pipe 233, circulation return pipe 234, linkage fan 235, special-shaped circulation pipe rack 236, convection fan 237, threaded support pipe 238, sand inlet net cage 239, closed electric push rod 240, mobile switching plate 241, inlet and outlet processing pipe 242 and control valve 243;

[0065] A water storage circulation box 201 is fixed in the middle of the top of the total positioning plate 1, and a bearing support plate 202 is fixedly connected to the top of the water storage circulation box 201. A fixed sealing box 203 is welded to the top of the bearing support plate 202. Lifting electric push rods 204 are fixed at both ends of the fixed sealing box 203. Sealing clamping plates 205 are fixed at the tops of the two lifting electric push rods 204 corresponding to the positions of the fixed sealing boxes 203. The sealing clamping plates 205 are inserted and installed on the inner side of the fixed sealing box 203, so that the closing process can be operated steadily. An expansion motor 206 is symmetrically installed at one end of the fixed sealing box 203 through the motor seat, and the output shaft of the expansion motor 206 The unfolding sealing plate 207 is clamped, and the unfolding sealing plate 207 is rotatably installed on the side end of the fixed sealing box 203, so that it can be operated steadily when closing and unfolding, ensuring the sealing effect and stability of the sealing. A condenser cooler 208 is fixed on the side end of the unfolding sealing plate 207. A plurality of drainage holes 209 are equidistantly connected to one side of the top of the bearing support plate 202. An electric heating fixture 210 is symmetrically installed on the top of the bearing support plate 202. A plurality of temperature detectors 211 are equidistantly installed on the top of the fixed sealing box 203. A humidity detector 212 is installed at the top of the fixed sealing box 203 near the temperature detector 211.

[0066] A plurality of linkage electric push rods 213 are symmetrically installed at the top of the fixed sealing box 203, and a fixed special-shaped sleeve 214 is installed at the bottom of the linkage electric push rod 213. A rotating motor 215 is installed at the bottom of the side end of the fixed special-shaped sleeve 214 through a motor seat. The output shaft of the rotating motor 215 is clamped with an expansion special-shaped sleeve 216. The expansion special-shaped sleeve 216 and the fixed special-shaped sleeve 214 are rotatably combined to ensure that they can be steadily matched when the rotation is unfolded and connected to the detection position. The fixed special-shaped sleeve 214 and the expansion special-shaped sleeve 216 are embedded with a contact detection head 217. One end of the detection head 217 is connected to a connecting wire 218, and one end of the connecting wire 218 is connected to one end of a transformer tester 219, which ensures the stability of the connection process. Transformer testers 219 are symmetrically installed at the positions of the connecting wires 218 at both ends of the fixed sealed box 203. Several impact hydraulic cylinders 220 are equidistantly installed at the top and both ends of the fixed sealed box 203. An impact destruction block 221 is installed at one end of the impact hydraulic cylinder 220. The impact destruction block 221 is placed inside the fixed sealed box 203 to achieve closed processing and ensure the stability of protection.

[0067] The water storage circulation box 201 and the fixed sealed box 203 are connected through an entry pipe rack 222, and a number of spray heads 223 are installed at equal distances at the bottom of the entry pipe rack 222. A booster pump 224 is installed at one end of the water storage circulation box 201 corresponding to the position of the entry pipe rack 222 through a motor seat. The spray head 223 is installed at the top of the inner side of the fixed sealed box 203 by snap-fitting. One end of the booster pump 224 is connected to one end of the entry pipe rack 222 through an adapter to achieve steady and continuous spraying, change the internal environment, and complete the performance test. The fixed sealed box 203 is symmetrically connected through two ends. An L-shaped circulation pipe 225 is provided, and a plurality of circulation fans 226 are equidistantly embedded in the side end of the L-shaped circulation pipe 225. A limited blocking sleeve 227 is inserted into one end of the L-shaped circulation pipe 225. Closed electric slide rails 228 are symmetrically installed at both ends of the inner side of the fixed sealing box 203. A closed sealing plate 229 is installed at one end of the closed electric slide rail 228. The closed sealing plate 229 is slidably installed on the inner side end of the fixed sealing box 203. The side end of the closed sealing plate 229 is fitted with the side end of the L-shaped circulation pipe 225 to achieve sliding sealing and alignment fixation, thereby avoiding movement deviation or detachment;

[0068] Both ends of the fixed sealed box 203 are fixed with a flow-blocking drying box 230, one end of the flow-blocking drying box 230 is clamped with an adsorption electromagnet 231, a drying net cage 232 is inserted at the side end of the flow-blocking drying box 230 corresponding to the position of the adsorption electromagnet 231, the adsorption electromagnet 231 is magnetically connected to the drying net cage 232, and the stability of the magnetic fixation is ensured, a plurality of extraction fixed pipes 233 are equidistantly connected between the top of the fixed sealed box 203 and the top of the flow-blocking drying box 230, a plurality of circulation return pipes 234 are equidistantly connected between the bottom of the side end of the fixed sealed box 203 and the bottom of the flow-blocking drying box 230, one end of the circulation return pipe 234 is installed with a linkage fan 235, one of which is connected to the side end of the unfolded sealing plate 207 and the top of the fixed sealed box 203 A special-shaped circulation pipe rack 236 is connected, and a number of convection fans 237 are equidistantly installed on the top of the side end of the special-shaped circulation pipe rack 236. A threaded support pipe 238 is connected through one end of the special-shaped circulation pipe rack 236. The side end of the threaded support pipe 238 is connected to a sand inlet net cage 239 through a thread. The side end of the sand inlet net cage 239 is symmetrically installed with closed electric push rods 240. A movable switching plate 241 is installed between the two closed electric push rods 240. The movable switching plate 241 is fitted and slidably connected with the sand inlet net cage 239 to achieve a steady sealing treatment. The water storage circulation box 201 and the fixed sealing box 203 are connected through one end with an inlet and outlet treatment pipe 242. The L-shaped circulation pipe 225, the special-shaped circulation pipe rack 236 and one end of the inlet and outlet treatment pipe 242 are all embedded with a control valve 243.

[0069] For the stable operation of the equipment, the input ends of the lifting electric push rod 204, the unfolding motor 206, the condensing cooler 208, the electric heat fixer 210, the temperature detector 211, the humidity detector 212, the linkage electric push rod 213, the rotating motor 215, the transformer tester 219, the impact hydraulic cylinder 220, the booster pump 224, the circulating fan 226, the closing electric slide rail 228, the adsorption electromagnet 231, the linkage fan 235, the convection fan 237, the closing electric push rod 240 and the control valve 243 are all electrically connected to the output end of the external controller;

[0070] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0071] A feed switching assembly 3 is provided at the top of the sum positioning plate 1;

[0072] The feed switching assembly 3 includes a positioning support bar 301, a synchronous electric push rod 302, a sliding shaped plate 303, an in-and-out hydraulic cylinder 304, an in-and-out support plate 305, an in-and-out electric slide rail 306, an inner hole processing block 307, an extraction hydraulic cylinder 308, a locking electromagnet 309, a shift fixing box 310, a processing motor 311, a processing screw rod 312, a bidirectional screw rod 313, a sliding fixed block 314, a limiting electromagnet 315, a shift support block 316, a buffer fixing hole 317, a fixing electromagnet 318, a sealed electric slide rail 319 and a U-shaped processing plate 320;

[0073] The top of the total positioning plate 1 is symmetrically installed with positioning support strips 301, and both ends of the water storage circulation box 201 are symmetrically installed with synchronous electric push rods 302. One end of the synchronous electric push rod 302 is installed with a sliding special-shaped plate 303. The side end of the sliding special-shaped plate 303 is sleeved with the side end of the positioning support strip 301 to achieve sliding positioning support. The bottom end of the sliding special-shaped plate 303 is equidistantly installed with a plurality of in-and-out hydraulic cylinders 304, and the top of the plurality of in-and-out hydraulic cylinders 304 is installed with an in-and-out support plate 305. The sliding special-shaped plate 30 The top of the two electric slide rails 306 are symmetrically engaged, and the top of the two electric slide rails 306 is connected to the inner hole processing block 307 through the slide rail seat. The in-and-out support plate 305 is slidably fitted with the sliding special-shaped plate 303. The inner hole processing block 307 is slidably installed on the top of the sliding special-shaped plate 303 to ensure the steady operation of the mobile support and lifting positioning, and realize the steady transposition processing of the equipment. An extraction hydraulic cylinder 308 is installed at one end of the inner hole processing block 307, and a locking electromagnet 309 is installed at one end of the extraction hydraulic cylinder 308;

[0074] A shift fixing box 310 is symmetrically installed on the top of the bearing support plate 202, and a processing motor 311 is installed on one end of the shift fixing box 310 through a motor seat, and a processing screw rod 312 is rotatably connected to the inner side of one of the shift fixing boxes 310, and one end of the processing screw rod 312 and the bidirectional screw rod 313 are both connected to the output shafts of the two processing motors 311 for easy transmission processing, and another shift fixing box 310 is rotatably connected to the inner side of the bidirectional screw rod 313, and the side ends of the processing screw rod 312 and the bidirectional screw rod 313 are connected to the sliding fixing rod 311 through a slide rail seat. The fixed block 314 is engaged with a limit electromagnet 315 at the top of the sliding fixed block 314, and a shift support block 316 is symmetrically slidably connected to the inner side of the shift fixed box 310. The limit electromagnet 315 is magnetically connected to the shift support block 316 to achieve a connection combination. A plurality of buffer fixing holes 317 are equidistantly provided at the top of the shift support block 316, and a fixed electromagnet 318 is installed at the top of the shift support block 316. A sealed electric slide rail 319 is symmetrically installed at the side end of the shift fixed box 310, and a U-shaped processing plate 320 is installed at one end of the sealed electric slide rail 319;

[0075] In order to ensure stable processing of the equipment, the input ends of the synchronous electric push rod 302, the in-and-out hydraulic cylinder 304, the in-and-out electric slide rail 306, the extraction hydraulic cylinder 308, the locking electromagnet 309, the processing motor 311, the limit electromagnet 315, the fixed electromagnet 318 and the sealed electric slide rail 319 are all electrically connected to the output end of the external controller.

[0076] The working principle and use process of the present invention are as follows: when conducting a power connection performance test on a transformer in power distribution, a worker uses an external loading device to transport the transformer to be tested to the top of the sliding special-shaped plate 303 at the top of the total positioning plate 1, and the in-and-out hydraulic cylinder 304 drives the in-and-out support plate 305 to rise, and places the transformer on the top of the two in-and-out support plates 305. After the placement is completed, the in-and-out hydraulic cylinder 304 drives the in-and-out support plate 305 to move downward, and stably places the transformer on the top of the sliding special-shaped plate 303, and the in-and-out electric slide rail 306 drives the inner hole processing block 307 to move along the sliding special-shaped plate 303 slides, so that the locking electromagnet 309 is attached to the side end of the transformer. The side end of the locking electromagnet 309 is attached to the side end of the transformer to support the loading of the transformer. When it is necessary to perform independent dry and wet environment operations on two transformers, the sliding special-shaped plates 303 at both ends can simultaneously realize the loading of the transformer. When it is necessary to perform continuous dry and wet treatment on a transformer, the material can be loaded through one end, and after loading, the processing screw rod 312 is used to drive the sliding fixed block 314 to move and drive it to slide, so as to change the position of the transformer in the fixed sealing box 203. At the same time, when loading, the unfolding motor 206 drives the unfolding sealing plate 207 to rotate along the fixed sealing box 203, so that the unfolding sealing plate 207 rotates and unfolds, and the synchronous electric push rod 302 drives the sliding special-shaped plate 303 to slide along the positioning support strip 301 and the total positioning plate 1 into the inner side of the fixed sealing box 203. At this time, the limiting electromagnet 315 located at the position of the bidirectional screw rod 313 is magnetically connected with the shift support block 316, and the bidirectional screw rod 313 drives the sliding fixed block 314, the limiting electromagnet 315 and the shift support block 316 to slide and position along the shift fixed box 310, so as to The shift support block 316 is attached to the bottom of the transformer, and the extraction hydraulic cylinder 308 drives the locking electromagnet 309 to push the transformer to slide along the top of the shift support block 316, and the transformer is placed in the middle of the top of the shift support block 316. The shift support block 316 and the transformer are fixedly connected by the fixing electromagnet 318. After the fixing is completed, the processing motor 311 and the bidirectional screw rod 313 drive the sliding fixing block 314 and the shift support block 316 to slide and reset, so that two groups of transformers can be moved in and out at the same time, so that the operation can be steadily coordinated during loading, and the accuracy of the processing position and the synchronization of the speed are guaranteed;

[0077] When a single transformer is loaded, the processing motor 311 drives the processing screw rod 312 to rotate, and the limit electromagnet 315 magnetically connects the sliding fixed block 314 and the shift support block 316, and the processing screw rod 312 drives the sliding fixed block 314 and the shift support block 316 to move, so that the transformer can move back and forth in the fixed sealing box 203, and the position of the transformer is changed, so that the transformer can be stably connected when the transformer is transposed and multiple groups of different operations are performed on a single transformer;

[0078] When the transformer enters the inner side of the fixed sealed box 203, the staff will connect the transformer to the power supply, and the expansion motor 206 will drive the expansion sealing plate 207 to seal and fix the fixed sealed box 203. After the sealing is completed, the lifting electric push rod 204 will drive the sealing clamping plate 205 to press down to the inner side of the fixed sealed box 203, and then the sealing electric slide rail 319 will drive the U-shaped processing plate 320 to slide along the shifting fixed box 310 to fit the side ends of the processing screw rod 312 and the two-way screw rod 313, and the sealing clamping plate 205 and the U-shaped processing plate 320 will be used to isolate the internal environment of the fixed sealed box 203. After the isolation is completed, the internal environment is cooled by the condensing cooler 208. , the internal temperature is raised by the electric heating fixture 210, and the temperature of the internal environment is switched by the temperature detector 211 to realize stable replacement of different operations. During the temperature rise and fall process, the closed electric slide rail 228 drives the closed sealing plate 229 to slide along the fixed sealing box 203, and the circulating fan 226 drives the air flow inside the L-shaped circulating pipe 225, driving the cold and hot air at the bottom to the top, and driving the cold and hot air on one side to the other side, so as to realize air convection circulation and stabilize the internal temperature. Moreover, by turning on some fans separately, a larger temperature change occurs at one end of the transformer and a smaller temperature change occurs at the other end, so that the operating environment temperature can be changed when the transformer is subjected to the extreme performance test;

[0079] When heating or cooling, the rotating motor 215 drives the unfolding special-shaped sleeve 216 to rotate and disengage from the fixed special-shaped sleeve 214, and the linkage electric push rod 213 drives the fixed special-shaped sleeve 214 to be pressed down, so that the fixed special-shaped sleeve 214 is attached to the position of the detection connection component, and the rotating motor 215 drives the unfolding special-shaped sleeve 216 to rotate and reset, so that the fixed special-shaped sleeve 214 and the unfolding special-shaped sleeve 216 are attached, and the contact detection head 217 is attached to the detection position pool. At this time, the transformer tester 219 is powered on, and the contact detection of the transformer is performed by connecting the wire 218 and the contact detection head 217. The actual operation of the transformer is understood through the transformer tester 219, and a steady detection operation is achieved. The detection data is recorded in real time, and the impact of environmental changes on the operation of the transformer during the transformer test process is understood;

[0080] When the temperature rises during the test in a humid environment, the booster pump 224 and the pipe rack 222 are used to extract water from the water storage circulation box 201, so that the water enters the pipe rack 222 and the spray head 223 and continuously sprays to the top of the transformer. Through continuous heating and stable spraying, the transformer is tested in different operating conditions in a high temperature environment, a rain environment and a high-temperature steam environment to understand the heating limit and waterproof leakage of the transformer. When the temperature drops, the above water injection operation is repeated to test the transformer in different operating conditions in a low temperature environment, a freezing environment and a continuous temperature loss environment to understand the low temperature and antifreeze conditions of the transformer. The interior is sealed by the inlet and outlet processing pipe 242 and the control valve 243, and water is continuously injected into the fixed sealing box 203 to realize the water immersion environment test of the transformer at different depths. In addition, the water can be heated and cooled during the test to realize independent high and low temperature tests, so that when testing the transformer in a humid environment, the internal temperature and humidity can be changed to achieve steady testing and ensure the accuracy of the test.

[0081] When the test is in a dry environment and the temperature rises or falls, the drying mesh cage 232 is inserted into the inner side of the choke drying box 230, and the drying mesh cage 232 and the choke drying box 230 are fixed by magnetic attraction through the adsorption electromagnet 231. The air in the choke drying box 230 is extracted through the circulation return pipe 234 and the linkage fan 235, and the air is injected into the inner side of the fixed sealed box 203. At this time, the air in the fixed sealed box 203 enters the inner side of the drying mesh cage 232 through the extraction fixed pipe 233, and refluxes with the circulation return pipe 234. The dryness of the environment is detected by the humidity detector 212 to control the dryness inside. At this time, the operating limit performance of the transformer under a dry environment at different temperatures can be tested. The internal air flow is extracted by the convection fan 237 and the special-shaped circulation pipe rack 236, and is closed by the control valve 243. At the side end of the special-shaped circulation pipe rack 236, the closed electric push rod 240 drives the mobile switching plate 241 to open the sand inlet cage 239. At this time, the external air pushes the sand and dust in the sand inlet cage 239 through the special-shaped circulation pipe rack 236 and is injected into the inner side of the fixed sealing box 203, and then cooperates with the high-speed flow of air inside the special-shaped circulation pipe rack 236 to drive the sand and dust circulation, so as to realize the test data of the transformer in a dry sand and dust environment. The dry environment is used in conjunction with the temperature rise and fall treatment and the manufacture of the sand and dust environment to realize independent operation of multiple environments and coordinated operation of multiple environments, and realize multiple environmental performance tests. The impact hydraulic cylinder 220 drives the impact destruction block 221 to impact different positions of the transformer, and the transformer is destructively tested to test its operation in a humid environment and a dry environment after damage, thereby further improving the comprehensiveness and diversity of the test.

[0082] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transformer power distribution detection method, characterized in that: The steps include: S1, loading and power connection: the transformer is placed at the test position by using the total positioning plate (1), the synchronous electric push rod (302) to drive the sliding special-shaped plate (303), the in-and-out hydraulic cylinder (304) to drive the in-and-out support plate (305), the in-and-out electric slide rail (306) to drive the inner hole processing block (307) and the extraction hydraulic cylinder (308) to drive the engaging electromagnet (309), and then the transformer is placed at the test position, and the power connection equipment is used to connect the transformer to the power connection position; S2, environmental adjustment: the internal environmental temperature is changed by the condensing cooler (208) and the electric heating fixer (210), and the impact hydraulic cylinder (220) drives the impact destruction block (221), the inlet pipe rack (222), the sprinkler head (223), the booster pump (224), the L-shaped circulation pipe (225), the circulation fan (226), the special-shaped circulation pipe rack (236), the convection fan (237) and the sand inlet cage (239) to adjust the humidity and temperature of the environment; S3, environmental testing: by fixing the special-shaped sleeve (214), rotating the motor (215), unfolding the special-shaped sleeve (216) and contacting the detection head (217), the transformer detection position is combined and operated, and the transformer is affected by the change of temperature and humidity, and the test data is recorded by the transformer tester (219); S4, cycle test: the sliding fixed block (314), the limit electromagnet (315) and the shift support block (316) are driven to move by the shift fixed box (310), the processing motor (311), the processing screw rod (312) and the bidirectional screw rod (313), so as to change the position of the transformer and the test environment; S5. Data analysis: Collect the test data and compare and analyze the data to understand the actual operating limit and stable operating environment of the transformer; A plurality of energy measuring components (2) are arranged on the top of the sum positioning plate (1); The multi-position energy measuring component (2) comprises a water storage circulation box (201); A water storage circulation box (201) is fixed at the middle of the top of the sum positioning plate (1), a bearing support plate (202) is fixedly connected to the top of the water storage circulation box (201), a fixed sealing box (203) is welded to the top of the bearing support plate (202), an expansion motor (206) is symmetrically mounted on one end of the fixed sealing box (203) through a motor seat, an expansion sealing plate (207) is clamped on the output shaft of the expansion motor (206), a condenser cooler (208) is fixed to the side end of the expansion sealing plate (207), a plurality of drainage treatment holes (209) are equidistantly penetrated and connected to one side of the top of the bearing support plate (202), and an electric heating fixture (210) is symmetrically mounted on the top of the bearing support plate (202); A plurality of linked electric push rods (213) are symmetrically installed at the top of the fixed sealed box (203), a fixed special-shaped sleeve (214) is installed at the bottom of the linked electric push rod (213), a rotating motor (215) is installed at the bottom of the side end of the fixed special-shaped sleeve (214) through a motor seat, an expansion special-shaped sleeve (216) is clamped on the output shaft of the rotating motor (215), a contact detection head (217) is embedded and installed inside the fixed special-shaped sleeve (214) and the expansion special-shaped sleeve (216), one end of the contact detection head (217) is connected to a connecting wire (218), and transformer testers (219) are symmetrically installed at the positions of the connecting wire (218) at both ends of the fixed sealed box (203); An inlet pipe rack (222) is connected between the water storage circulation box (201) and the fixed sealing box (203), a plurality of spray heads (223) are installed at equal intervals at the bottom end of the inlet pipe rack (222), and a booster pump (224) is installed at one end of the water storage circulation box (201) at a position corresponding to the inlet pipe rack (222) through a motor seat; Both ends of the fixed sealed box (203) are fixed with a flow-blocking drying box (230), one end of the flow-blocking drying box (230) is clamped with an adsorption electromagnet (231), a drying net cage (232) is inserted into the position of the side end of the flow-blocking drying box (230) corresponding to the adsorption electromagnet (231), a plurality of extraction fixed pipes (233) are equidistantly connected through the top of the fixed sealed box (203) and the top of the flow-blocking drying box (230), a plurality of circulation return pipes (234) are equidistantly connected through the bottom of the side end of the fixed sealed box (203) and the bottom of the flow-blocking drying box (230), and a linkage fan (235) is installed at one end of the circulation return pipe (234); Both ends of the fixed sealed box (203) are fixed with lifting electric push rods (204); sealing clamping plates (205) are fixed at the top ends of the two lifting electric push rods (204) at positions corresponding to the fixed sealed box (203); a plurality of temperature detectors (211) are equidistantly installed at the top end of the fixed sealed box (203); a humidity detector (212) is installed at the top end of the fixed sealed box (203) near the position of the temperature detector (211); a plurality of impact hydraulic cylinders (220) are equidistantly installed at the top end and both ends of the fixed sealed box (203); an impact destruction block (221) is installed at one end of the impact hydraulic cylinder (220); The two ends of the fixed sealed box (203) are symmetrically connected with L-shaped circulation pipes (225), and the side ends of the L-shaped circulation pipe (225) are equidistantly embedded with a plurality of circulation fans (226), one end of the L-shaped circulation pipe (225) is inserted into a limited position blocking sleeve (227), and the two ends of the inner side of the fixed sealed box (203) are symmetrically installed with closed electric slide rails (228), and one end of the closed electric slide rail (228) is installed with a closed sealing plate (229); A special-shaped circulation pipe rack (236) is connected through the side end of one of the unfolded sealing plates (207) and the top of the fixed sealing box (203); a plurality of convection fans (237) are equidistantly installed on the top of the side end of the special-shaped circulation pipe rack (236); a threaded support pipe (238) is connected through one end of the special-shaped circulation pipe rack (236); a sand inlet mesh cage (239) is connected to the side end of the threaded support pipe (238) by threading; a closed electric push rod (240) is symmetrically installed on the side end of the sand inlet mesh cage (239); a movable switching plate (241) is installed between the two closed electric push rods (240); an inlet and outlet treatment pipe (242) is connected through one end of the water storage circulation box (201) and the fixed sealing box (203); a control valve (243) is embedded and installed at one end of the L-shaped circulation pipe (225), the special-shaped circulation pipe rack (236) and the inlet and outlet treatment pipe (242); A feed switching assembly (3) is provided at the top of the sum positioning plate (1); The feed switching assembly (3) comprises a positioning support bar (301); Positioning support bars (301) are symmetrically installed on both sides of the top of the total positioning plate (1), synchronous electric push rods (302) are symmetrically installed at both ends of the water storage circulation box (201), a sliding special-shaped plate (303) is installed at one end of the synchronous electric push rod (302), a plurality of in-and-out hydraulic cylinders (304) are equidistantly installed at the bottom of the sliding special-shaped plate (303), and an in-and-out support plate (305) is installed at the top of the plurality of in-and-out hydraulic cylinders (304), and an in-and-out electric slide rail (306) is symmetrically engaged at the top of the sliding special-shaped plate (303), and the tops of the two in-and-out electric slide rails (306) are connected to an inner hole processing block (307) through a slide rail seat, and an extraction hydraulic cylinder (308) is installed at one end of the inner hole processing block (307), and a locking electromagnet (309) is installed at one end of the extraction hydraulic cylinder (308); A shift fixing box (310) is symmetrically mounted on the top of the bearing support plate (202), and a processing motor (311) is mounted on one end of the shift fixing box (310) via a motor seat, and a processing screw rod (312) is rotatably connected to the inner side of one of the shift fixing boxes (310), and a bidirectional screw rod (313) is rotatably connected to the inner side of the other shift fixing box (310), and the side ends of the processing screw rod (312) and the bidirectional screw rod (313) are both connected to a sliding fixing block (314) via a slide rail seat, and the slide A limit electromagnet (315) is engaged at the top of the row fixing block (314); a shift support block (316) is symmetrically slidably connected to the inner side of the shift fixing box (310); a plurality of buffer fixing holes (317) are equidistantly provided at the top of the shift support block (316); a fixed electromagnet (318) is installed at the top of the shift support block (316); a sealed electric slide rail (319) is symmetrically installed at the side end of the shift fixing box (310); a U-shaped processing plate (320) is installed at one end of the sealed electric slide rail (319).

2. A transformer power distribution detection method according to claim 1, characterized in that: The sealing clamping plate (205) is inserted and installed inside the fixed sealing box (203), the unfolding sealing plate (207) is rotatably installed on the side end of the fixed sealing box (203), the unfolding special-shaped sleeve (216) is rotatably combined with the fixed special-shaped sleeve (214), and one end of the connecting wire (218) is connected to one end of the transformer tester (219).

3. A transformer power distribution detection method according to claim 1, characterized in that: The impact destruction block (221) is placed inside the fixed sealing box (203), the spray head (223) is mounted on the top of the inner side of the fixed sealing box (203), and one end of the booster pump (224) is connected to one end of the inlet pipe rack (222) via an adapter.

4. A transformer power distribution detection method according to claim 1, characterized in that: The closed sealing plate (229) is slidably mounted on the inner end of the fixed sealing box (203), the side end of the closed sealing plate (229) is in contact with the side end of the L-shaped circulation pipe (225), and the adsorption electromagnet (231) is magnetically connected to the drying mesh cage (232).

5. A transformer power distribution detection method according to claim 1, characterized in that: The movable switching plate (241) is in close contact and sliding connection with the sand inlet net cage (239); The input ends of the lifting electric push rod (204), the unfolding motor (206), the condensing cooler (208), the electric heat fixer (210), the temperature detector (211), the humidity detector (212), the linkage electric push rod (213), the rotating motor (215), the transformer tester (219), the impact hydraulic cylinder (220), the booster pump (224), the circulating fan (226), the closing electric slide rail (228), the adsorption electromagnet (231), the linkage fan (235), the convection fan (237), the closing electric push rod (240) and the control valve (243) are all electrically connected to the output end of the external controller; The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

6. A transformer power distribution detection method according to claim 1, characterized in that: The side end of the sliding shaped plate (303) is fitted with the side end of the positioning support bar (301), the entry and exit support plate (305) is slidably fitted with the sliding shaped plate (303), and the inner hole processing block (307) is slidably installed on the top of the sliding shaped plate (303).

7. A transformer power distribution detection method according to claim 1, characterized in that: One end of the processing screw rod (312) and the bidirectional screw rod (313) are both clamped with the output shafts of the two processing motors (311), and the limit electromagnet (315) is magnetically connected to the displacement support block (316); The input ends of the synchronous electric push rod (302), the in-and-out hydraulic cylinder (304), the in-and-out electric slide rail (306), the extraction hydraulic cylinder (308), the locking electromagnet (309), the processing motor (311), the limit electromagnet (315), the fixing electromagnet (318) and the sealed electric slide rail (319) are all electrically connected to the output end of the external controller.

Images