A high pressure flow splitter and sampling device

Abstract

The application discloses a high-voltage shunt and a sampling device, and belongs to the technical field of shunts. The high-voltage shunt comprises a main body mechanism, a disconnection mechanism arranged in the main body mechanism and used for being automatically disconnected when a fault occurs, and two terminal mechanisms used for wiring. Through linkage design of the built-in temperature sensing sheet and the disconnection mechanism, automatic and accurate protection of the fault is realized. When the internal temperature of the equipment is abnormally increased due to the fault and exceeds a safety threshold, the temperature sensing sheet is deformed by heat and triggers the disconnection mechanism. The energy stored in the tension spring is used to quickly drive the on-off contact piece to act, so that the main circuit can be reliably disconnected. At the same time, the action can link the top protruding block to be self-locked and protrude from the surface of the protection shell to form an intuitive and eye-catching mechanical fault indicator, effectively preventing the accident from being expanded, and providing clear fault point positioning for operation and maintenance personnel, shortening the fault troubleshooting time, and improving the safety and maintainability of the system.

Description

Technical Field

[0001] This invention relates to the field of shunt technology, and in particular to a high-voltage shunt and sampling device. Background Technology

[0002] High-voltage shunts are key devices in power systems used for measuring large currents. Their working principle is based on Ohm's law, indirectly calculating the current flowing through a known resistor by measuring the voltage drop across it. When measuring current in high-voltage environments, the performance and reliability of the shunt are crucial. It requires not only high measurement accuracy but also a robust safety protection mechanism to prevent damage from overcurrent, overheating, or other faults, which could even lead to safety accidents.

[0003] Traditional high-voltage shunts have a relatively simple structure, mainly consisting of resistive elements and corresponding connection terminals. However, in practical applications, they suffer from the following technical problems and shortcomings: Traditional shunts lack effective automatic protection and fault indication mechanisms. When a fault occurs within the shunt, such as overload or short circuit causing abnormal temperature increases, even reaching dangerous thresholds, most traditional products cannot automatically disconnect the circuit and must rely on external protection devices. However, the action of external protection devices may be delayed or unable to respond promptly to specific overheating faults within the shunt itself, thus missing the optimal protection window. Furthermore, after fault disconnection, traditional shunts typically lack intuitive, self-locking mechanical indicators, making it difficult for maintenance personnel to quickly locate and identify the specific faulty device, increasing troubleshooting difficulty and repair time. Reset operations after fault resolution are also often inconvenient and may even require component replacement.

[0004] Furthermore, the wiring method of high-voltage cables also affects ease of use and safety. Traditional terminal mechanisms often use simple bolt crimping, which requires specialized tools and is difficult to control. Excessive clamping force may damage the cable, while insufficient force may lead to excessive contact resistance, severe overheating, or even arcing. Additionally, in vibrating environments, simple bolt connections are prone to loosening, increasing the risk of poor contact.

[0005] Therefore, existing high-voltage shunts have room for improvement in terms of heat dissipation efficiency, automatic fault disconnection and indication, wiring convenience and reliability, and the linkage of sampling connections. There is an urgent need for a high-integration, high-safety and easy-to-maintain high-voltage shunt and sampling device. Summary of the Invention

[0006] To address the aforementioned technical problems, the present invention adopts the following technical solution: a high-voltage shunt, comprising a main body, the main body including a protective housing, and the main body being provided with a disconnection mechanism for automatic disconnection in the event of a fault and two terminal mechanisms for wiring.

[0007] The main body includes two external connecting pieces fixedly installed inside the protective housing, and two on / off connecting pieces slidably installed inside the protective housing.

[0008] Furthermore, the main body mechanism also includes a lower connecting piece fixedly installed inside the protective shell, and a temperature sensing piece is provided on the lower connecting piece, with both ends of the temperature sensing piece rotatably installed with the lower connecting piece.

[0009] Furthermore, the main body also includes an inner heat sink fixedly installed at the bottom of the protective housing, and a lower heat sink plate is provided on the outer side of the inner heat sink.

[0010] During use, current flows from the terminal mechanism into the outer connecting piece, then into the switching contact, then into the lower connecting piece, and finally through the switching contact on the other side, and out from the outer connecting piece and the terminal mechanism on the other side. The shunt is cooled by the inner heat sink and the lower heat sink, so that the temperature inside the protection housing is kept within a reasonable range. When the shunt fails and the temperature inside the protection housing exceeds a certain value, the inner heat sink and the lower heat sink can no longer effectively dissipate heat. At this time, the temperature sensing element is heated and arches upward to a certain extent, and then the temperature sensing element contacts the upper top post.

[0011] Furthermore, the disconnection mechanism includes four upper movable blocks that are slidably installed inside the protective housing. Upper short rotating blocks are rotatably installed on the upper movable blocks, and lifting frames are rotatably installed on the upper short rotating blocks. An upper top column is fixedly installed below the lifting frames.

[0012] Furthermore, the disconnection mechanism also includes a side retractable plate fixedly installed below the upper movable block. The side retractable plate is slidably installed with the protective shell. An inner vertical guide rail is fixedly installed inside the protective shell. A lifting frame is slidably installed on the inner vertical guide rail. A side push frame is slidably installed inside the lifting frame. The outer side of the side push frame contacts the side retractable plate.

[0013] Furthermore, the disconnection mechanism also includes an upper rotating block rotatably mounted on the side push frame, a lower rotating block rotatably mounted on the upper rotating block, an inner upright plate fixedly mounted on the lower rotating block, the upper rotating block rotatably mounted to the protective shell, and the lower rotating block rotatably mounted to the on / off contact plate.

[0014] Furthermore, the disconnection mechanism also includes a tension spring disposed between the on / off contact piece and the protective housing. In normal condition, the tension spring is in a stretched state, the upper rotating block and the lower rotating block are in a vertical state, a top protrusion is slidably mounted on the protective housing, and a side lifting column is fixedly mounted below the top protrusion. The bottom of the side lifting column is in contact with the upper surface of the on / off contact piece.

[0015] When the temperature sensor contacts the upper top post, it continues to arch, pushing the upper top post and the lifting frame upwards. The lifting frame, through the upper short rotating block, drives the upper movable block and the side inner retracting plate to move inwards. The side inner retracting plate pushes the side pushing frame to move inwards along the lifting frame. The upper and lower rotating blocks, which were originally in a vertical state, prevent the tension spring from rebounding. When the lifting frame moves inwards, it drives the upper and lower rotating blocks to rotate. The upper and lower rotating blocks are no longer in a vertical state. At this time, the tension spring rebounds quickly, driving the on / off contact plate to rise, causing the on / off contact plate to disconnect from the lower connecting plate and the outer connecting plate. At this time, the diverter disconnects. At the same time, the lifting frame moves upwards along the inner vertical guide rail. The on / off contact plate drives the side lifting post and the top protrusion to move upwards, causing the top protrusion to protrude from the upper surface of the protective shell.

[0016] After the fault is resolved and the temperature sensor cools down and returns to normal, manually press down the top protrusion. The top protrusion will cause the side lifting column to descend, which will press down the on / off contact piece. The tension spring will be stretched, which will cause the lower rotating block to rotate. When the inner vertical plate contacts the upper rotating block, the upper and lower rotating blocks will be in a vertical position, and the tension spring will not be able to rebound. At the same time, the side lifting column will descend, causing the lifting frame and the upper lifting column to descend and reset. The lifting frame will drive the upper movable block and the side inner retracting plate to reset through the upper short rotating block.

[0017] Furthermore, the terminal mechanism includes a lower fixing plate fixedly mounted on the outer connecting piece, a fixing post fixedly mounted on the lower fixing plate, a tightening knob rotatably mounted on the fixing post, a lower pressing block slidably mounted on the fixing post, and a lower spring provided between the lower pressing block and the lower fixing plate.

[0018] Furthermore, the terminal mechanism also includes a descending pressure block and a descending plate that are slidably mounted on the fixed terminal post. A ramp pressure ring is fixedly mounted on the descending plate, and a ramp surface is provided on the ramp pressure ring. A ramp surface is provided on the lower surface of the tightening knob. An upper spring is provided between the descending plate and the descending pressure block.

[0019] In use, connect the high-voltage cable to the fixed terminal block, then manually turn the tightening knob. The slope of the tightening knob pushes the inclined pressure ring and the lowering plate down, so that the lower surface of the lowering pressure block contacts the high-voltage cable. Then, as the lowering pressure block continues to descend, it presses the high-voltage cable onto the lower clamping block. When the lowering pressure block descends to its lowest point, the upper and lower springs are in a compressed state, and the high-voltage cable is fixed by the lowering pressure block and the lower clamping block.

[0020] Furthermore, the sampling device of the high-voltage shunt includes a detection post fixedly installed on the protective housing, an upper fixing sleeve fixedly installed below the detection post, the upper fixing sleeve being fixedly installed with the protective housing, and a lower sliding post fixedly installed on the on / off contact plate, the lower sliding post being slidably installed with the upper fixing sleeve.

[0021] Connect the oscilloscope to the two test leads. The oscilloscope reads the current flowing through the continuity contact through the test leads, the upper fixed sleeve, and the lower sliding post to collect the current fluctuation data. After the continuity contact is lifted and separated from the outer and lower connecting pieces, the lower sliding post slides inside the upper fixed sleeve.

[0022] The beneficial effects of this invention compared with the prior art are: (1) This invention achieves automated and precise fault protection through the linkage design of the built-in temperature sensing element and the disconnection mechanism. When the internal temperature of the equipment rises abnormally due to the fault and exceeds the safety threshold, the temperature sensing element is deformed by heat and triggers the disconnection mechanism. The energy stored in the tension spring is used to quickly drive the on / off contact to reliably disconnect the main circuit. At the same time, this action will link the top protrusion to self-lock and protrude from the surface of the protective shell, forming an intuitive and eye-catching mechanical fault indicator, effectively preventing the accident from escalating. It can also provide maintenance personnel with clear fault location, shorten the fault troubleshooting time, and improve the efficiency of fault diagnosis. (2) By integrating an inner heat sink at the bottom of the protective housing and setting a lower heat sink plate on its outer side, this shunt constructs an efficient heat conduction and heat dissipation path. The inner heat sink directly contacts or is close to the heat-generating element, which can quickly conduct internal heat to the lower heat sink plate. By increasing the heat dissipation area, the heat is dissipated to the surrounding environment, effectively reducing the temperature rise inside the protective housing. This allows the internal components of the shunt to maintain a reasonable operating temperature range under long-term current flow or short-term overload conditions, which not only ensures measurement accuracy but also improves the overall current carrying capacity and long-term thermal stability of the equipment. Qualitative; (3) The terminal mechanism set in this invention adopts a unique elastic pressing method. By rotating the tightening knob, the slope and the inclined pressure ring are used to push the lower pressing block and the lower clamping block to work together. With the help of the elastic force of the upper and lower springs, the high-voltage cable is pressed in a flexible and firm manner, which abandons the rigid hard connection of traditional bolts. The preload of the spring can automatically compensate for the loosening of the contact caused by vibration or temperature difference, ensuring that the contact resistance remains low and stable for a long time, effectively avoiding the heating of the contact point. At the same time, the operation process is simple and quick, without the need for special tools. The wiring can be completed by manually rotating the knob, which also has the functions of wiring The convenience and long-term reliability of the sampling device set in this invention are achieved by sliding the lower sliding column and the upper fixed sleeve to directly set the sampling point on the movable switching contact, realizing the synchronous switching of the sampling point and the main circuit. During normal measurement, the oscilloscope or other measuring equipment can stably read the current waveform through the detection column. Once the shunt is triggered to disconnect due to a fault, the switching contact will pop up and the lower sliding column will slide synchronously in the upper fixed sleeve, so that the sampling point and the circuit part that has been separated by electricity will be disconnected. This effectively prevents damage to the precision measuring instrument due to voltage change or arc intrusion and improves the safety of the sampling process. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention (internal).

[0025] Figure 3 This is a schematic diagram of the main structure of the present invention. Figure 1 .

[0026] Figure 4 This is a schematic diagram of the main structure of the present invention. Figure 2 .

[0027] Figure 5 This is a schematic diagram of the disconnection mechanism of the present invention. Figure 1 .

[0028] Figure 6 This is a schematic diagram of the disconnection mechanism of the present invention. Figure 2 .

[0029] Figure 7 This is a schematic diagram of the disconnection mechanism of the present invention. Figure 3 .

[0030] Figure 8 This is a schematic diagram of the terminal mechanism structure of the present invention. Figure 1 .

[0031] Figure 9 This is a schematic diagram of the terminal mechanism structure of the present invention. Figure 2 .

[0032] Reference numerals: 101-Protective housing; 102-Outer connecting piece; 103-On / off connecting piece; 104-Lower connecting piece; 105-Temperature sensing piece; 106-Detection line post; 107-Lower sliding post; 108-Upper fixing sleeve; 109-Lower heat sink; 110-Inner heat sink; 201-Upper top post; 202-Push-up bracket; 203-Top protrusion; 204-Side push-up post; 205-Inner vertical guide rail; 206-Upper short rotating block; 20 7-Upper movable block; 208-Side inner retracting plate; 209-Side pushing frame; 210-Lifting frame; 211-Upper rotating block; 212-Lower rotating block; 213-Inner upright plate; 214-Tension spring; 301-Fixed connecting column; 302-Lowering connecting plate; 303-Slope pressure ring; 304-Tightening knob; 305-Lowering pressure block; 306-Upper spring; 307-Lower fixed plate; 308-Lower pressing block; 309-Lower spring. Detailed Implementation

[0033] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0034] Example: Reference Figures 1-9A high-voltage shunt includes a main body, which includes a protective housing 101. The main body is provided with a disconnection mechanism for automatic disconnection in case of a fault and two terminal mechanisms for wiring.

[0035] The main structure includes two external connecting pieces 102 fixedly installed inside the protective housing 101, and two on / off connecting pieces 103 slidably installed inside the protective housing 101.

[0036] like Figure 3 , Figure 4 As shown, the main body also includes a lower connecting piece 104 fixedly installed inside the protective housing 101. A temperature sensing piece 105 is provided on the lower connecting piece 104, and both ends of the temperature sensing piece 105 are rotatably installed with the lower connecting piece 104.

[0037] like Figure 3 , Figure 4 As shown, the main structure also includes an inner heat sink 110 fixedly installed at the bottom of the protective housing 101, and a lower heat sink 109 is provided on the outer side of the inner heat sink 110.

[0038] In use, current flows from the terminal mechanism into the outer connecting piece 102, then into the switching contact 103, then into the lower connecting piece 104, and finally through the switching contact 103 on the other side, and out from the outer connecting piece 102 and the terminal mechanism on the other side. The shunt is cooled by the inner heat sink 110 and the lower heat sink 109, so that the temperature inside the protective housing 101 is kept within a reasonable range. When the shunt fails and the temperature inside the protective housing 101 exceeds a certain value, the inner heat sink 110 and the lower heat sink 109 can no longer effectively dissipate heat. At this time, the temperature sensing piece 105 is heated and arches upward to a certain extent, and then the temperature sensing piece 105 contacts the upper top post 201.

[0039] like Figures 5-7 As shown, the disconnection mechanism includes four upper movable blocks 207 that are slidably installed inside the protective housing 101. Upper short rotating blocks 206 are rotatably installed on the upper movable blocks 207. A lifting frame 202 is rotatably installed on the upper short rotating blocks 206. An upper top column 201 is fixedly installed below the lifting frame 202.

[0040] like Figures 5-7 As shown, the disconnection mechanism also includes a side retractable plate 208 fixedly installed below the upper movable block 207. The side retractable plate 208 is slidably installed with the protective shell 101. An inner vertical guide rail 205 is fixedly installed inside the protective shell 101. A lifting frame 210 is slidably installed on the inner vertical guide rail 205. A side push frame 209 is slidably installed inside the lifting frame 210. The outer side of the side push frame 209 contacts the side retractable plate 208.

[0041] like Figures 5-7As shown, the disconnecting mechanism also includes an upper rotating block 211 rotatably mounted on the side push frame 209, a lower rotating block 212 rotatably mounted on the upper rotating block 211, an inner upright plate 213 fixedly mounted on the lower rotating block 212, the upper rotating block 211 rotatably mounted to the protective shell 101, and the lower rotating block 212 rotatably mounted to the on / off contact plate 103.

[0042] like Figures 5-7 As shown, the disconnecting mechanism also includes a tension spring 214 disposed between the on / off contact 103 and the protective housing 101. In normal condition, the tension spring 214 is in a stretched state, the upper rotating block 211 and the lower rotating block 212 are in a vertical state, a top protrusion 203 is slidably mounted on the protective housing 101, and a side lifting column 204 is fixedly mounted below the top protrusion 203. The bottom of the side lifting column 204 contacts the upper surface of the on / off contact 103.

[0043] When the temperature sensor 105 contacts the upper top column 201, the temperature sensor 105 continues to arch, pushing the upper top column 201 and the lifting frame 202 upward. The lifting frame 202 drives the upper movable block 207 and the side inner retracting plate 208 to move inward through the upper short rotating block 206. The side inner retracting plate 208 pushes the side pushing frame 209 to move inward along the lifting frame 210. The upper rotating block 211 and the lower rotating block 212, which were originally in a vertical state, prevent the tension spring 214 from rebounding. When the lifting frame 210 moves inward, it drives the upper rotating block 211 to move inward. When the upper rotating block 211 and the lower rotating block 212 rotate, the upper rotating block 211 and the lower rotating block 212 are no longer in a vertical state. At this time, the tension spring 214 rebounds quickly, causing the on / off contact piece 103 to rise, so that the on / off contact piece 103 is disconnected from the lower connecting piece 104 and the outer connecting piece 102. At this time, the diverter is disconnected. At the same time, the lifting frame 210 moves upward along the inner vertical guide rail 205. The on / off contact piece 103 drives the side lifting column 204 and the top protrusion 203 to move upward, so that the top protrusion 203 protrudes from the upper surface of the protective shell 101.

[0044] After the fault is resolved, the temperature sensor 105 cools down and returns to normal. Manually press down the top protrusion 203. The top protrusion 203 drives the side lifting column 204 to descend. The side lifting column 204 presses down the on / off contact piece 103, and the tension spring 214 is stretched. At this time, it drives the lower rotating block 212 to rotate. When the inner vertical plate 213 contacts the upper rotating block 211, the upper rotating block 211 and the lower rotating block 212 are in a vertical state, and the tension spring 214 cannot rebound. At the same time, the side lifting column 204 descends, driving the lifting frame 202 and the upper lifting column 201 to descend and reset. The lifting frame 202 drives the upper movable block 207 and the side inner retracting plate 208 to reset through the upper short rotating block 206.

[0045] like Figure 8 , Figure 9As shown, the terminal mechanism includes a lower fixing plate 307 fixedly mounted on the outer connecting piece 102, a fixing post 301 fixedly mounted on the lower fixing plate 307, a tightening knob 304 rotatably mounted on the fixing post 301, a lower pressing block 308 slidably mounted on the fixing post 301, and a lower spring 309 provided between the lower pressing block 308 and the lower fixing plate 307.

[0046] like Figure 8 , Figure 9 As shown, the terminal mechanism also includes a descending pressure block 305 and a descending plate 302 that are slidably mounted on the fixed connecting post 301. A ramp pressure ring 303 is fixedly mounted on the descending plate 302. A ramp pressure ring 303 is provided on the ramp pressure ring 303. A ramp is provided on the lower surface of the tightening knob 304. An upper spring 306 is provided between the descending plate 302 and the descending pressure block 305.

[0047] In use, connect the high-voltage cable to the fixed terminal 301, then manually turn the tightening knob 304. The slope of the tightening knob 304 pushes the inclined pressure ring 303 and the descending plate 302 down, so that the lower surface of the descending pressure block 305 contacts the high-voltage cable. Then, as the descending pressure block 305 continues to descend, it presses the high-voltage cable onto the lower clamping block 308. When the descending pressure block 305 descends to its lowest point, the upper spring 306 and the lower spring 309 are in a compressed state, and the high-voltage cable is fixed by the descending pressure block 305 and the lower clamping block 308.

[0048] like Figure 3 , Figure 4 As shown, the sampling device of the high voltage shunt includes a detection post 106 fixedly installed on the protective housing 101, an upper fixing sleeve 108 fixedly installed below the detection post 106, the upper fixing sleeve 108 being fixedly installed with the protective housing 101, and a lower sliding post 107 fixedly installed on the on / off contact plate 103, the lower sliding post 107 being slidably installed with the upper fixing sleeve 108.

[0049] Connect the oscilloscope to the two test leads 106. The oscilloscope reads the current flowing through the contact plate 103 through the test leads 106, the upper fixed sleeve 108 and the lower sliding post 107 to collect the current fluctuation data. After the contact plate 103 is lifted and separated from the outer connecting piece 102 and the lower connecting piece 104, the lower sliding post 107 slides inside the upper fixed sleeve 108.

[0050] The working principle of the high-voltage shunt and sampling device disclosed in this invention is as follows: When in use, the high-voltage cable is connected to the fixed terminal 301, and then the tightening knob 304 is manually rotated. The slope of the tightening knob 304 pushes the inclined pressure ring 303 and the descending plate 302 to descend, so that the lower surface of the descending pressure block 305 contacts the high-voltage cable. Then, as the descending pressure block 305 continues to descend, the high-voltage cable is pressed on the lower clamping block 308. When the descending pressure block 305 descends to the lowest point, the upper spring 306 and the lower spring 309 are in a compressed state, and the high-voltage cable is fixed by the descending pressure block 305 and the lower clamping block 308.

[0051] In use, current flows from the terminal mechanism into the outer connecting piece 102, then into the switching contact 103, then into the lower connecting piece 104, and finally through the switching contact 103 on the other side, and out from the outer connecting piece 102 and the terminal mechanism on the other side. The shunt is cooled by the inner heat sink 110 and the lower heat sink 109, so that the temperature inside the protective housing 101 is kept within a reasonable range. When the shunt fails and the temperature inside the protective housing 101 exceeds a certain value, the inner heat sink 110 and the lower heat sink 109 can no longer effectively dissipate heat. At this time, the temperature sensing piece 105 is heated and arches upward to a certain extent, and then the temperature sensing piece 105 contacts the upper top post 201.

[0052] When the temperature sensor 105 contacts the upper top column 201, the temperature sensor 105 continues to arch, pushing the upper top column 201 and the lifting frame 202 upward. The lifting frame 202 drives the upper movable block 207 and the side inner retracting plate 208 to move inward through the upper short rotating block 206. The side inner retracting plate 208 pushes the side pushing frame 209 to move inward along the lifting frame 210. The upper rotating block 211 and the lower rotating block 212, which were originally in a vertical state, prevent the tension spring 214 from rebounding. When the lifting frame 210 moves inward, it drives the upper rotating block 211 to move inward. When the upper rotating block 211 and the lower rotating block 212 rotate, the upper rotating block 211 and the lower rotating block 212 are no longer in a vertical state. At this time, the tension spring 214 rebounds quickly, causing the on / off contact piece 103 to rise, so that the on / off contact piece 103 is disconnected from the lower connecting piece 104 and the outer connecting piece 102. At this time, the diverter is disconnected. At the same time, the lifting frame 210 moves upward along the inner vertical guide rail 205. The on / off contact piece 103 drives the side lifting column 204 and the top protrusion 203 to move upward, so that the top protrusion 203 protrudes from the upper surface of the protective shell 101.

[0053] After the fault is resolved, the temperature sensor 105 cools down and returns to normal. Manually press down the top protrusion 203. The top protrusion 203 drives the side lifting column 204 to descend. The side lifting column 204 presses down the on / off contact piece 103, and the tension spring 214 is stretched. At this time, it drives the lower rotating block 212 to rotate. When the inner vertical plate 213 contacts the upper rotating block 211, the upper rotating block 211 and the lower rotating block 212 are in a vertical state, and the tension spring 214 cannot rebound. At the same time, the side lifting column 204 descends, driving the lifting frame 202 and the upper lifting column 201 to descend and reset. The lifting frame 202 drives the upper movable block 207 and the side inner retracting plate 208 to reset through the upper short rotating block 206.

[0054] Connect the oscilloscope to the two test leads 106. The oscilloscope reads the current flowing through the contact plate 103 through the test leads 106, the upper fixed sleeve 108 and the lower sliding post 107 to collect the current fluctuation data. After the contact plate 103 is lifted and separated from the outer connecting piece 102 and the lower connecting piece 104, the lower sliding post 107 slides inside the upper fixed sleeve 108.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the present invention based on the technical solution and inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-voltage shunt, comprising a main body, characterized in that: The main body includes a protective housing (101), and the main body is provided with a disconnection mechanism for automatic disconnection in case of failure and two terminal mechanisms for wiring. The main body includes two external connecting pieces (102) fixedly installed inside the protective shell (101), and two on / off connecting pieces (103) slidably installed inside the protective shell (101). The terminal mechanism includes a lower fixing plate (307) fixedly installed on the outer connecting piece (102), a fixing post (301) fixedly installed on the lower fixing plate (307), and a tightening knob (304) rotatably installed on the fixing post (301). The main body also includes a lower connecting piece (104) fixedly installed inside the protective shell (101), and a temperature sensing piece (105) is provided on the lower connecting piece (104). The two ends of the temperature sensing piece (105) are rotatably installed with the lower connecting piece (104). The disconnection mechanism includes four upper movable blocks (207) that are slidably installed inside the protective housing (101). An upper short rotating block (206) is rotatably installed on the upper movable block (207). A lifting frame (202) is rotatably installed on the upper short rotating block (206). An upper top column (201) is fixedly installed below the lifting frame (202). The disconnection mechanism also includes a side retractable plate (208) fixedly installed below the upper movable block (207). The side retractable plate (208) is slidably installed with the protective shell (101). An inner vertical guide rail (205) is fixedly installed inside the protective shell (101). A lifting frame (210) is slidably installed on the inner vertical guide rail (205). A side push frame (209) is slidably installed inside the lifting frame (210). The outer side of the side push frame (209) contacts the side retractable plate (208). The disconnection mechanism further includes an upper rotating block (211) rotatably mounted on the side push frame (209), a lower rotating block (212) rotatably mounted on the upper rotating block (211), an inner upright plate (213) fixedly mounted on the lower rotating block (212), the upper rotating block (211) rotatably mounted to the protective shell (101), and the lower rotating block (212) rotatably mounted to the on / off contact piece (103); The disconnection mechanism also includes a tension spring (214) disposed between the on / off contact plate (103) and the protective shell (101). In normal state, the tension spring (214) is in a stretched state, the upper rotating block (211) and the lower rotating block (212) are in a vertical state, a top protrusion (203) is slidably installed on the protective shell (101), and a side lifting column (204) is fixedly installed below the top protrusion (203). The bottom of the side lifting column (204) is in contact with the upper surface of the on / off contact plate (103).

2. A high-voltage shunt according to claim 1, characterized in that: The main structure also includes an inner heat sink (110) fixedly installed at the bottom of the protective shell (101), and a lower heat sink (109) is provided on the outside of the inner heat sink (110).

3. A high-voltage shunt according to claim 1, characterized in that: A lower pressing block (308) is slidably installed on the fixed column (301), and a lower spring (309) is provided between the lower pressing block (308) and the lower fixed plate (307).

4. A high-voltage shunt according to claim 3, characterized in that: The terminal mechanism also includes a descending pressure block (305) and a descending plate (302) slidably mounted on a fixed connecting post (301). A ramp pressure ring (303) is fixedly mounted on the descending plate (302). A ramp pressure ring (303) is provided on the ramp pressure ring (303). A ramp is provided on the lower surface of the tightening knob (304). An upper spring (306) is provided between the descending plate (302) and the descending pressure block (305).

5. The sampling device for a high-voltage shunt according to claim 1, characterized in that: The device includes a detection post (106) fixedly installed on the protective housing (101), an upper fixing sleeve (108) fixedly installed below the detection post (106), the upper fixing sleeve (108) fixedly installed with the protective housing (101), and a lower sliding post (107) fixedly installed on the on / off contact plate (103), the lower sliding post (107) slidingly installed with the upper fixing sleeve (108).

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