Portable lightning arrester performance detection device and use method thereof

Abstract

The invention discloses a portable lightning arrester performance detection device and a use method thereof, and relates to the field of lightning arrester detection. The portable lightning arrester performance detection device comprises a direct-current high-voltage generator and a box cover arranged on the direct-current high-voltage generator, a flat cable is arranged between the direct-current high-voltage generator and the box cover, two test main lines are embedded in the flat cable, a placement cavity is formed in the box cover, and the test main lines are arranged in the placement cavity. And a plurality of contact type power connection seats are arranged in the placement cavity in parallel based on the test main line, and each contact type power connection seat can be used for placing the lightning arrester main body and is electrically connected with the lightning arrester main body in a contact manner. According to the portable lightning arrester performance detection device, the multi-station parallel contact type power connection seat is arranged in the placement cavity of the box cover, the test branch line is connected with the test main line, a plurality of lightning arrester main bodies can be placed at the same time, a single detection loop is independently controlled through the change-over switch, and batch detection and station switching are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lightning arrester detection, and in particular to a portable lightning arrester performance detection device and a use method thereof. BACKGROUND

[0002] In the operation and maintenance process of the power system, as the core equipment of overvoltage protection, the insulation performance and current-carrying capacity of the lightning arrester directly affect the safety of the power grid operation, and the performance detection needs to be carried out regularly. The existing lightning arrester detection device has the following technical defects:

[0003] Poor portability: the traditional detection equipment is bulky and has complex wiring, and the carrying and layout efficiency is low when working outdoors, which is difficult to adapt to the detection needs of multiple scenes;

[0004] Low detection efficiency: mostly designed with a single station, and only one lightning arrester can be detected at a time, which is tedious and time-consuming when batch detection is performed;

[0005] Poor adaptability: the power connection structure is fixed, and it cannot be compatible with lightning arresters of different lengths and diameters, and there are problems of unstable power connection and easy damage to the equipment;

[0006] To solve the above problems, the present application provides a portable lightning arrester performance detection device. SUMMARY

[0007] The present application aims to provide a portable lightning arrester performance detection device and a use method thereof to solve the problems raised in the background.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a portable lightning arrester performance detection device, comprising a direct current high-voltage generator and a box cover provided on the direct current high-voltage generator, a wire is arranged between the direct current high-voltage generator and the box cover, two test main wires are embedded in the wire, one end of each test main wire is connected to the positive pole of the direct current high-voltage generator and the positive pole of the built-in microammeter in the direct current high-voltage generator respectively, and the negative pole of the direct current high-voltage generator and the negative pole of the built-in microammeter are connected to the ground wire together to form a main loop of the detection circuit;

[0009] A placing cavity is formed on the box cover, two cable grooves are symmetrically fixed to the inner wall of the placing cavity, the other end of each test main wire is correspondingly inserted into the two cable grooves and extends along the groove body, a plurality of contact type power connection seats are arranged in parallel based on the test main wires in the placing cavity, each contact type power connection seat is connected to the two test main wires through two independent test branch wires respectively to form a multi-station parallel detection loop;

[0010] Each of the contact power receptacle can place the lightning arrester body, and realize contact type electrical connection with the lightning arrester body, the high voltage end, low voltage end of the lightning arrester body respectively corresponding to the two test branch lines of its contact power receptacle, and the test branch line on the high voltage end side of the lightning arrester body is provided with a switch.

[0011] Preferably, the DC high voltage generator is internally provided with a containing cavity, and the inner wall of the containing cavity is slidingly assembled with a limiting plate in the height direction; the two ends of the limiting plate are fixedly connected with the inner bottom wall of the containing cavity, and a return spring is arranged between the two ends and the inner bottom wall, and the return spring is always in a pre-tightened state;

[0012] The top of the DC high voltage generator is provided with a threading opening in communication with the containing cavity, the wire is extended into the containing cavity through the threading opening, and the limiting plate is fixedly sleeved on the outside of the wire and synchronously displaced with the wire; through the elastic expansion and contraction of the return spring, the wire is self-adaptively and elastically limited with the opening and closing of the box cover.

[0013] Preferably, two slide rails are symmetrically assembled between the side wall and the top of the DC high voltage generator, the opposite sides of each slide rail are provided with a vertical sliding groove and a horizontal sliding groove in communication with each other, and the horizontal sliding groove extends horizontally along the top of the DC high voltage generator.

[0014] Preferably, one end of the box cover is provided with a limiting groove matched with the outside of the slide rail, a limiting shaft is fixedly embedded in the limiting groove, and the end portion of the limiting shaft is slidably and rotatably embedded in the vertical sliding groove or the horizontal sliding groove;

[0015] A matched buckle assembly is assembled between the other side of the box cover and the other side of the DC high voltage generator.

[0016] In the detection state, the limiting shaft is pushed to slide downward along the vertical sliding groove, so that the box cover is horizontally unfolded and positioned at the detection station;

[0017] In the storage state, the box cover is pulled upward so that the limiting shaft slides into the horizontal sliding groove, the box cover is turned over to the top of the DC high voltage generator, and the sealing protection of the DC high voltage generator is realized through the locking and fixing of the buckle assembly.

[0018] Preferably, the contact power receptacle comprises a moving groove provided in the inner wall of the placing cavity, a moving block symmetrically slidingly assembled in the moving groove, a support assembly fixedly assembled on the moving block, and an electrical connection assembly assembled on the outside of the support assembly.

[0019] The support assemblies are symmetrically distributed on both sides and used for supporting both ends of the lightning arrester body, the current collecting assemblies are in one-to-one correspondence with the high-voltage end and the low-voltage end of the lightning arrester body and form conductive connection, and the current collecting assemblies are in conductive communication with the corresponding test branch lines; the distance between the support assemblies on both sides is adjusted by pushing the moving blocks to slide along the moving grooves synchronously or reversely, so that the lightning arrester body of different length specifications can be adaptively supported and stably connected.

[0020] Preferably, the support assembly comprises a base fixed to the moving block, a moving strip movably inserted into the base, and a support frame fixed to the top end of the moving strip.

[0021] Both ends of the support frame are provided with rubber support rollers, and a screw rod is threadedly provided outside the base, one end of the screw rod is in close abutment with the side wall of the moving strip, and the other end extends outward and is fixedly connected with a knob.

[0022] The knob is screwed to drive the screw rod to loosen or lock the moving strip, and the rubber support rollers are adapted to support the lightning arrester body of different diameter specifications by adjusting the vertical height of the moving strip.

[0023] Preferably, the current collecting assembly comprises a support rod fixed to the support assembly, a nut rotatably connected to the top end of the support rod, and a lead screw threadedly connected to the nut.

[0024] The lead screw is movably inserted into the support rod, the top end of the lead screw is fixedly connected with a support block, the top of the support block is provided with an arc-shaped groove, and a current collecting sheet made of conductive material is embedded in the arc-shaped groove.

[0025] The end of the test branch line penetrates through the support block and is in conductive connection with the current collecting sheet, and the current collecting sheet is tightly attached to the high-voltage end or the low-voltage end of the lightning arrester body by adjusting the vertical position of the lead screw, so as to ensure the conductive stability during detection.

[0026] Preferably, the lead screw is symmetrically provided with a rotation-stopping groove on both sides, and the rotation-stopping groove is slidably connected with the inner wall of the support rod.

[0027] The rotation-stopping groove limits the circumferential rotation of the lead screw along with the nut, so that the lead screw only moves vertically and linearly when the nut rotates, and the current collecting sheet is connected to the high-voltage end or the low-voltage end of the lightning arrester body.

[0028] A use method of a portable lightning arrester performance detection device, which comprises the following steps:

[0029] S1. Unfolding the device: unfolding the box cover from the direct current high-voltage generator to expose the placing cavity to the detection station, and realizing stable connection between the direct current high-voltage generator and the test circuit on the box cover through the wire arrangement;

[0030] S2. Place the lightning arrester: place the lightning arrester to be detected one by one on the contact type power contact in the placement cavity, so that the high voltage end and the low voltage end of each lightning arrester body are respectively connected in conduction with the two test branches of the corresponding contact type power contact;

[0031] S3. Select the detection station: close the switch on the high voltage end side test branch corresponding to the target lightning arrester body, so that the detection circuit of the station is turned on; the switch corresponding to the remaining lightning arrester body remains open state to avoid interference with the current detection;

[0032] S4. Start detection: turn on the DC high voltage generator, and conduct the DC high voltage to the target lightning arrester body through the test main line and the turned-on test branch; monitor the test current in real time through the microammeter built-in the DC high voltage generator, complete the performance detection of the lightning arrester body and record the data;

[0033] S5. Switch and continue to measure: disconnect the switch of the current station, repeat steps S3-S4, turn on the switches of the remaining stations in turn, and complete the performance detection of all lightning arrester bodies to be detected;

[0034] S6. Storage device: after detection, remove all lightning arrester bodies, disconnect the power supply of the DC high voltage generator, reset the box cover to the DC high voltage generator, and realize portable storage of the device.

[0035] Technical effects and advantages of the application:

[0036] 1. The portable lightning arrester performance detection device adopts the integrated design of embedding two test main lines in the wire, cooperates with the grounding wire to form a complete main circuit, simplifies the wiring structure and improves the stability of the circuit; the contact type power contact in the placement cavity of the box cover is provided with multiple parallel detection stations, which can be connected through test branches and test main lines, multiple lightning arrester bodies can be placed at the same time, a single detection circuit is independently controlled through the switch, batch detection and station switching are realized, and the detection efficiency is greatly improved; the contact type power contact realizes rapid power connection of the lightning arrester body, avoids the complicated operation of traditional wiring, adapts to the on-site rapid detection demand, and considers the portability and detection efficiency.

[0037] 2. The portable lightning arrester performance detection device is slidably and rotatably matched with the vertical sliding groove and the horizontal sliding groove, cooperates with the buckle assembly, realizes the switching of two working states of the box cover: when detecting, the box cover is slid down along the vertical sliding groove, is horizontally positioned at the detection station, and guarantees the operation space; when storing, the box cover is slid into the horizontal sliding groove, is turned over to the top of the DC high voltage generator and is locked, realizes sealing protection; the compact structure design is simple and fast in unfolding and storage operation, improves the portability of the device, and at the same time avoids the entry of external dust and water vapor into the internal part of the DC high voltage generator, and protects the core components.

[0038] 3. The portable lightning arrester performance detection device, the contact type current collector base is matched with the sliding of the moving groove and the moving block, the distance of the two side support assemblies can be adjusted, and the lightning arrester body of different length specifications is adapted; the moving bar of the support assembly can be adjusted vertically along the base, is locked and fixed through the screw rod, is matched with the rubber support roller on the support frame, and the adaptation support of the lightning arrester body of different diameter specifications is realized; the current collector assembly is matched with the screw thread of the nut and the screw rod, the vertical position of the current collector sheet is adjusted, the current collector sheet is tightly attached to the high-voltage end and the low-voltage end of the lightning arrester body. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is the whole structure schematic diagram of the application;

[0040] Figure 2 It is the structure schematic diagram of the DC high-voltage generator and the wire arrangement of the application;

[0041] Figure 3 It is the structure schematic diagram of the wire arrangement, the limiting plate and the reset spring of the application;

[0042] Figure 4 It is the structure schematic diagram of the box cover of the application;

[0043] Figure 5 It is the partial structure schematic diagram of the box cover of the application;

[0044] Figure 6 It is the structure schematic diagram of the connection between the box cover and the contact type current collector base of the application;

[0045] Figure 7 It is the structure schematic diagram of the support assembly of the application;

[0046] Figure 8 It is the structure schematic diagram of the current collector assembly of the application.

[0047] In the figure: 1, DC high-voltage generator; 11, containing cavity; 12, limiting plate; 13, reset spring; 14, slide rail; 15, vertical sliding groove; 16, horizontal sliding groove; 2, box cover; 21, placing cavity; 22, cable groove; 23, switch; 24, limiting groove; 25, limiting shaft; 3, wire arrangement; 31, test main line; 32, test branch line; 4, contact type current collector base; 41, moving groove; 42, moving block; 43, support assembly; 431, base; 432, moving bar; 433, support frame; 434, rubber support roller; 435, screw rod; 436, knob; 44, current collector assembly; 441, support rod; 442, nut; 443, screw rod; 444, rotation stopping groove; 445, support block; 446, current collector sheet; 5, lightning arrester body. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0049] The present application provides a portable lightning arrester performance detection device as shown in Figures 1-8 The present application provides a portable lightning arrester performance detection device as shown in

[0050] The box cover 2 is provided with a placing cavity 21, the inner wall of the placing cavity 21 is symmetrically fixed with two cable grooves 22, the other end of the two test main lines 31 is correspondingly inserted into the two cable grooves 22 and extends along the groove body, a plurality of contact type power receptacles 4 are arranged in parallel based on the test main lines 31 in the placing cavity 21, each contact type power receptacle 4 is correspondingly connected with the two test main lines 31 through two independent test branch lines 32, forming a multi-station parallel detection circuit.

[0051] The box cover 2 is provided with a placing cavity 21, the inner wall of the placing cavity 21 is symmetrically fixed with two cable grooves 22, the other end of the two test main lines 31 is correspondingly inserted into the two cable grooves 22 and extends along the groove body, a plurality of contact type power receptacles 4 are arranged in parallel based on the test main lines 31 in the placing cavity 21, each contact type power receptacle 4 is correspondingly connected with the two test main lines 31 through two independent test branch lines 32, forming a multi-station parallel detection circuit.

[0052] The integrated design of the two test main lines 31 embedded in the flat cable 3 is adopted, and the complete main circuit is formed in cooperation with the ground wire, the wiring structure is simplified, and the circuit stability is improved; the contact type power receptacle 4 in the placing cavity 21 of the box cover 2 is arranged in a multi-station parallel manner, and is connected with the test main line 31 through the test branch line 32, a plurality of lightning arrester bodies 5 can be placed at the same time, a single detection circuit is independently controlled through the switch 23, batch detection and station switching are realized, and the detection efficiency is greatly improved; the contact type power receptacle 4 realizes quick power connection of the lightning arrester body 5, avoids the cumbersome operation of traditional wiring, adapts to the on-site quick detection demand, and takes into account the portability and detection efficiency.

[0053] Further, the DC high-voltage generator 1 is internally provided with an accommodating cavity 11, the inner wall of the accommodating cavity 11 is slidingly assembled with a limiting plate 12 in the height direction; the two ends of the limiting plate 12 are fixedly connected with the inner bottom wall of the accommodating cavity 11, and a reset spring 13 is arranged between the two ends and the inner bottom wall of the accommodating cavity 11, and the reset spring 13 is always in a pre-tightening state;

[0054] The top of the DC high-voltage generator 1 is provided with a threading opening in communication with the accommodating cavity 11, the wire 3 extends into the accommodating cavity 11 through the threading opening, and the limiting plate 12 is fixedly sleeved on the outside of the wire 3 and synchronously displaced with the wire 3, and through the elastic expansion and contraction of the reset spring 13, the wire 3 is self-adaptingly and elastically limited with the opening and closing of the box cover 2.

[0055] The sliding limiting plate 12 is arranged in the accommodating cavity 11 of the DC high-voltage generator 1, and cooperates with the pre-tightening reset spring 13 to make the limiting plate 12 synchronously displace with the opening and closing of the box cover 2, so as to realize the self-adapting expansion and contraction of the wire 3, effectively avoid the wire 3 from being pulled and bent when the box cover 2 is unfolded or closed, reduce the risk of line damage, prolong the service life of the cable, and guarantee the continuity and reliability of the detection circuit.

[0056] Further, two slide rails 14 are symmetrically arranged between the side wall and the top of the DC high-voltage generator 1, the opposite sides of each slide rail 14 are provided with a vertical sliding groove 15 and a horizontal sliding groove 16 in communication with each other, and the horizontal sliding groove 16 extends horizontally along the top of the DC high-voltage generator 1.

[0057] The vertical sliding groove 15 and the horizontal sliding groove 16 are arranged in communication with each other on the slide rail 14 to provide accurate guidance for the unfolding and storage of the box cover 2; the vertical sliding groove 15 guarantees the horizontal unfolding positioning of the box cover 2 in the detection state, and the horizontal sliding groove 16 is adapted to the overturning storage of the box cover 2 in the storage state, and the sliding groove structure is reasonable, so that the unfolding and storage actions of the device are smooth, and the operation convenience is improved.

[0058] Further, one end of the box cover 2 is provided with a limiting groove 24 adapted to be sleeved on the outside of the slide rail 14, a limiting shaft 25 is fixedly embedded in the limiting groove 24, and the end of the limiting shaft 25 is slidably and rotatably embedded in the vertical sliding groove 15 or the horizontal sliding groove 16;

[0059] A buckling assembly adapted to the box cover 2 is arranged between the other side of the box cover 2 and the other side of the DC high-voltage generator 1;

[0060] In the detection state, the limiting shaft 25 is pushed to slide downward along the vertical sliding groove 15, so that the box cover 2 is unfolded horizontally and positioned at the detection station;

[0061] In the storage state, the box cover 2 is pulled upward to make the limiting shaft 25 slide into the horizontal sliding groove 16, and the box cover 2 is overturned to the top of the DC high-voltage generator 1, and is locked and fixed through the buckling assembly, so as to realize the sealing protection of the DC high-voltage generator 1.

[0062] The limiting shaft 25 is slidingly and rotatably matched with the vertical sliding groove 15 and the horizontal sliding groove 16, cooperates with the buckle assembly, and realizes switching of two working states of the box cover 2: when detecting, the box cover 2 is unfolded by sliding along the vertical sliding groove 15 and is horizontally positioned at the detection station, so as to ensure the operation space; when storing, the box cover 2 is slid into the horizontal sliding groove 16, is turned over to the top of the direct-current high-voltage generator 1 and is locked, so as to realize sealing protection; the structure is compact, the unfolding and storing operations are simple and fast, the portability of the device is improved, and meanwhile, dust and water vapor from outside is prevented from entering the inside of the direct-current high-voltage generator 1, so as to protect the core components.

[0063] Further, the contact type power contact 4 comprises a moving groove 41 formed in the inner wall of the placing cavity 21, a moving block 42 symmetrically slidingly matched in the moving groove 41, a support assembly 43 fixedly arranged on the moving block 42, and a power contact assembly 44 arranged on the outer side of the support assembly 43.

[0064] The two side support assemblies 43 are symmetrically distributed and are used for supporting two ends of the lightning arrester body 5, the power contact assembly 44 is in one-to-one correspondence with the high-voltage end and the low-voltage end of the lightning arrester body 5 and forms a conductive connection, and the power contact assembly 44 is in conductive communication with the corresponding test branch 32; by pushing the moving block 42 to slide synchronously or reversely along the moving groove 41, the distance between the two side support assemblies 43 is adjusted, so that the lightning arrester body 5 of different length specifications is adaptively supported and stably powered.

[0065] The contact type power contact 4 is matched with the moving groove 41 and the moving block 42 through sliding, so that the distance between the two side support assemblies 43 can be adjusted to adapt to lightning arrester bodies 5 of different length specifications; the support assembly 43 stably supports the two ends of the lightning arrester body 5, the power contact assembly 44 precisely contacts and conducts electricity with the high-voltage end and the low-voltage end of the lightning arrester, so that the lightning arrester of different specifications can be stably powered, the adaptability and detection reliability of the device are improved, and the problem of poor power contact caused by mismatching of specifications is avoided.

[0066] Further, the support assembly 43 comprises a base 431 fixedly arranged on the moving block 42, a moving strip 432 movably inserted into the base 431, and a support frame 433 fixedly arranged at the top end of the moving strip 432.

[0067] The two ends of the support frame 433 are provided with rubber support rollers 434, a screw rod 435 is threadedly arranged on the outer side of the base 431, one end of the screw rod 435 is in close abutment with the side wall of the moving strip 432, and the other end of the screw rod 435 extends outward and is fixedly connected with a knob 436.

[0068] The knob 436 is screwed to drive the screw rod 435 to loosen or lock the moving strip 432, the vertical height of the moving strip 432 is adjusted, and the rubber support rollers 434 adaptively support the lightning arrester bodies 5 of different diameter specifications.

[0069] The moving strip 432 of the supporting assembly 43 can be vertically adjusted along the base 431, locked and fixed by the screw rod 435, matched with the rubber supporting roller 434 on the supporting frame 433, and the different diameter specifications of the lightning arrester main body 5 are adapted and supported; the rubber supporting roller 434 has a buffering and protecting effect, avoids damaging the surface of the lightning arrester during the supporting process, the vertical height adjusting structure is simple and convenient to operate, and the compatible range of the device to different specifications of lightning arresters is further expanded.

[0070] Further, the power connection assembly 44 includes a supporting rod 441 fixed to the supporting assembly 43, a nut 442 rotationally assembled at the top end of the supporting rod 441, and a lead screw 443 threadedly matched with the nut 442;

[0071] The lead screw 443 is movably arranged in the supporting rod 441, and a supporting block 445 is fixed to the top end of the lead screw 443. An arc-shaped groove is formed in the top of the supporting block 445, and a power connection piece 446 made of conductive material is embedded in the arc-shaped groove.

[0072] The end of the test branch line 32 penetrates through the supporting block 445 and is conductively connected with the power connection piece 446. By adjusting the vertical position of the lead screw 443, the power connection piece 446 is tightly attached to the high-voltage end or the low-voltage end of the lightning arrester main body 5, so as to ensure the stable conduction during the detection process.

[0073] The power connection assembly 44 adjusts the vertical position of the power connection piece 446 by the thread cooperation between the nut 442 and the lead screw 443, so that the power connection piece 446 is tightly attached to the high-voltage end or the low-voltage end of the lightning arrester main body 5. The power connection piece 446 is made of conductive material and is embedded in the arc-shaped groove, which increases the contact area and ensures the stable conduction, avoids the detection data deviation caused by poor contact during the detection process, and improves the accuracy of the detection result.

[0074] Further, the lead screw 443 is symmetrically provided with a rotation stopping groove 444 on both sides, and the rotation stopping groove 444 is slidably matched with the inner wall of the supporting rod 441.

[0075] The rotation stopping groove 444 limits the circumferential rotation of the lead screw 443 along with the nut 442, so that when the nut 442 rotates, the lead screw 443 only moves vertically and linearly, and the power connection piece 446 is connected to the high-voltage end or the low-voltage end of the lightning arrester main body 5.

[0076] The rotation stopping groove 444 on both sides of the lead screw 443 is slidably matched with the inner wall of the supporting rod 441, which limits the circumferential rotation of the lead screw 443, so that when the nut 442 rotates, the lead screw 443 only moves vertically and linearly. It is ensured that the power connection piece 446 is always accurately connected to the end of the lightning arrester main body 5, avoids the power connection deviation caused by the rotation of the lead screw 443, and improves the accuracy and convenience of the power connection operation.

[0077] A use method of a portable lightning arrester performance detection device, which adopts the portable lightning arrester performance detection device, and includes the following steps:

[0078] S1. Unfolding device: unfold the box cover 2 from the direct current high-voltage generator 1 to expose the placement cavity 21 to the detection station, and realize stable connection of the direct current high-voltage generator 1 and the test circuit on the box cover 2 through the wire 3;

[0079] S2. Placing lightning arresters: place the lightning arrester bodies 5 to be detected one by one on the contact type power contact 4 in the placement cavity 21, so that the high-voltage end and the low-voltage end of each lightning arrester body 5 form conductive connection with the two test branches 32 of the corresponding contact type power contact 4 respectively;

[0080] S3. Selecting detection station: close the switching switch 23 on the corresponding high-voltage end side test branch 32 of the target lightning arrester body 5 to make the detection circuit of the station conductive; the switching switches 23 corresponding to the remaining lightning arrester bodies 5 remain in the open state to avoid interference with the current detection;

[0081] S4. Start detection: turn on the direct current high-voltage generator 1, and conduct the direct current high-voltage to the target lightning arrester body 5 through the test main line 31 and the conductive test branch 32, monitor the test current in real time through the microammeter built in the direct current high-voltage generator 1, complete the performance detection of the lightning arrester body 5 and record the data;

[0082] S5. Switching and continuous measurement: disconnect the switching switch 23 of the current station, repeat steps S3-S4, and sequentially connect the switching switches 23 of the remaining stations to complete the performance detection of all lightning arrester bodies 5 to be detected;

[0083] S6. Storage device: after the detection is completed, remove all lightning arrester bodies 5, disconnect the power supply of the direct current high-voltage generator 1, reset the box cover 2 to the direct current high-voltage generator 1, and realize portable storage of the device.

[0084] Overall working process:

[0085] Unlock the buckle assembly between the direct current high-voltage generator 1 and the box cover 2, pull the box cover 2 upward, so that the limiting shaft 25 in the limiting slot 24 slides into the vertical sliding slot 15 from the horizontal sliding slot 16; push the box cover 2 to slide downward along the vertical sliding slot 15 until the box cover 2 is unfolded horizontally and positioned at the detection station, at this time the wire 3 is self-adapted to be elongated under the action of the limiting plate 12 and the reset spring 13, and the circuit is kept connected.

[0086] According to the length specification of the lightning arrester body 5 to be detected, the moving block 42 of the contact type current collecting seat 4 is synchronously or reversely slid along the moving groove 41, the spacing of the two side support assemblies 43 is adjusted, the knob 436 is screwed to drive the screw rod 435 to loosen the moving strip 432, the vertical height of the moving strip 432 is adjusted, the rubber support roller 434 is adapted to the diameter of the lightning arrester body 5, and then the screw rod 435 is locked; the lightning arrester bodies 5 are placed on the rubber support rollers 434 of the support assemblies 43 one by one, the nut 442 is rotated to drive the screw rod 443 to move vertically, the current collecting sheet 446 of the current collecting assembly 44 is tightly attached to the high-voltage end and the low-voltage end of the lightning arrester body 5, and stable conductive connection is formed.

[0087] The closing of the target lightning arrester body 5 corresponds to the switch 23 on the test branch 32 on the high-voltage end side, the on-off of the work position detection circuit is realized, the remaining work position switches 23 are kept off to avoid cross interference; the ground wire of the direct current high-voltage generator 1 is connected, the direct current high-voltage generator 1 is started, the high-voltage current is conducted to the target lightning arrester body 5 through the test main line 31 and the on-off test branch 32, the test current is monitored in real time through the built-in microammeter, and the detection data is recorded.

[0088] After the detection of the current work position is completed, the corresponding switch 23 is disconnected, the switches 23 of the remaining work positions are sequentially closed, and the above detection steps are repeated until the detection of all the lightning arrester bodies 5 placed on the contact type current collecting seat 4 is completed.

[0089] All the lightning arrester bodies 5 are removed, the power supply of the direct current high-voltage generator 1 is turned off and the ground wire is disconnected; the box cover 2 is pulled up to make the limiting shaft 25 slide into the transverse sliding groove 16, the box cover 2 is turned over to the top of the direct current high-voltage generator 1, and is locked and fixed through the buckle assembly; during the storage process, the wire arrangement 3 is contracted under the elastic pulling force of the reset spring 13, the limiting plate 12 slides upward along the containing cavity 11, the wire arrangement 3 is orderly stored in the containing cavity 11, and the sealing protection and portable storage of the device are realized.

[0090] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalents, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A portable surge arrester performance testing device, comprising a DC high-voltage generator (1) and a cover (2) disposed on the DC high-voltage generator (1), characterized in that, A ribbon cable (3) is provided between the DC high voltage generator (1) and the box cover (2). Two test main lines (31) are embedded in the ribbon cable (3). One end of the two test main lines (31) is connected to the positive terminal of the DC high voltage generator (1) and the positive terminal of the built-in microammeter of the DC high voltage generator (1), respectively. The negative terminal of the DC high voltage generator (1) and the negative terminal of the built-in microammeter are connected to the ground wire together to form the main circuit of the detection circuit. The box cover (2) has a placement cavity (21). Two cable slots (22) are symmetrically fixed on the inner wall of the placement cavity (21). The other ends of the two test main lines (31) are inserted into the two cable slots (22) and extend along the slots. Multiple contact terminals (4) are set in parallel in the placement cavity (21) based on the test main lines (31). Each contact terminal (4) is connected to the two test main lines (31) through two independent test branch lines (32) to form a multi-station parallel detection circuit. Each of the contact-type electrical bases (4) can be used to place the surge arrester body (5) and to achieve contact-type electrical connection with the surge arrester body (5). The high-voltage end and low-voltage end of the surge arrester body (5) are respectively connected to the two test branches (32) of its respective contact-type electrical base (4), and a switching switch (23) is connected in series on the test branch (32) located on the high-voltage end side of the surge arrester body (5).

2. The portable surge arrester performance testing device according to claim 1, characterized in that, The DC high voltage generator (1) has an internal cavity (11), and a limit plate (12) is slidably mounted on the inner wall of the cavity (11) along the height direction; a return spring (13) is fixedly connected between both ends of the limit plate (12) and the inner bottom wall of the cavity (11), and the return spring (13) is always in a pre-tightened state. The top of the DC high voltage generator (1) is provided with a wire-passing opening that communicates with the accommodating cavity (11). The ribbon cable (3) extends into the accommodating cavity (11) through the wire-passing opening, and the limiting plate (12) is fixedly sleeved on the outside of the ribbon cable (3) and moves synchronously with the ribbon cable (3). Through the elastic extension and retraction of the reset spring (13), the ribbon cable (3) is adaptively extended and retracted as the box cover (2) opens and closes.

3. The portable surge arrester performance testing device according to claim 1, characterized in that, Two slide rails (14) are symmetrically mounted between one side wall and the top of the DC high voltage generator (1). Each slide rail (14) has a vertical slide groove (15) and a horizontal slide groove (16) that are connected to each other on the opposite side. The horizontal slide groove (16) extends horizontally along the top of the DC high voltage generator (1).

4. The portable surge arrester performance testing device according to claim 3, characterized in that, One end of the box cover (2) is provided with a limiting groove (24) adapted to be provided on the outside of the slide rail (14). A limiting shaft (25) is fixedly embedded in the limiting groove (24). The end of the limiting shaft (25) is slidably and rotatably embedded in the vertical slide groove (15) or the horizontal slide groove (16). A matching snap-fit ​​assembly is fitted between the other side of the cover (2) and the other side of the DC high voltage generator (1); In the detection state, push the limiting shaft (25) to slide down along the vertical slide groove (15) so that the box cover (2) is horizontally unfolded and positioned at the detection station; In the storage state, pull the box cover (2) upward to make the limiting shaft (25) slide into the horizontal slide groove (16), flip the box cover (2) to the top of the DC high voltage generator (1), and lock it in place by the buckle assembly to achieve sealing protection for the DC high voltage generator (1).

5. The portable surge arrester performance testing device according to claim 1, characterized in that, The contact-type electrical connector (4) includes a movable groove (41) opened on the inner wall of the placement cavity (21), a movable block (42) symmetrically slidably assembled in the movable groove (41), a support assembly (43) fixed on the movable block (42), and an electrical connector (44) assembled on the outside of the support assembly (43). The support components (43) on both sides are symmetrically distributed to support both ends of the surge arrester body (5). The power connection component (44) is in contact with the high voltage end and low voltage end of the surge arrester body (5) and forms a conductive connection. The power connection component (44) is also conductively connected to the corresponding test branch (32). By pushing the moving block (42) to slide synchronously or in the opposite direction along the moving groove (41), the distance between the support components (43) on both sides can be adjusted to achieve the adaptation support and stable power connection for surge arrester bodies (5) of different lengths and specifications.

6. The portable surge arrester performance testing device according to claim 5, characterized in that, The support assembly (43) includes a base (431) fixed to the movable block (42), a movable strip (432) movably inserted into the base (431), and a support frame (433) fixed to the top of the movable strip (432). Both ends of the support frame (433) are equipped with rubber support rollers (434), and a screw (435) is threaded through the outer side of the base (431). One end of the screw (435) is in close contact with the side wall of the moving bar (432), and the other end extends outward and is fixedly connected to a knob (436). Turning the knob (436) drives the screw (435) to loosen or lock the moving bar (432). By adjusting the vertical height of the moving bar (432), the rubber support roller (434) can be adapted to support the arrester body (5) of different diameter specifications.

7. A portable surge arrester performance testing device according to claim 5, characterized in that, The power connection assembly (44) includes a support rod (441) fixed to the support assembly (43), a nut (442) rotatably mounted on the top of the support rod (441), and a lead screw (443) threadedly adapted to the nut (442). The lead screw (443) is movably inserted into the support rod (441), and a support block (445) is fixedly connected to its top end. An arc-shaped groove is opened on the top of the support block (445), and a conductive contact piece (446) is embedded in the arc-shaped groove. The end of the test branch (32) passes through the support block (445) and is electrically connected to the contact piece (446). By adjusting the vertical position of the screw (443), the contact piece (446) is made to fit tightly with the high voltage end or low voltage end of the surge arrester body (5), ensuring the conductivity stability of the test process.

8. The portable surge arrester performance testing device according to claim 7, characterized in that, The lead screw (443) has symmetrical anti-rotation grooves (444) on both sides, and the anti-rotation grooves (444) are slidably adapted to the inner wall of the support rod (441). By restricting the rotation of the lead screw (443) with the circumferential rotation of the nut (442) through the anti-rotation groove (444), the lead screw (443) moves only in a vertical straight line when the nut (442) rotates, so that the connecting piece (446) connects with the high voltage end or low voltage end of the surge arrester body (5).

9. A method of using a portable surge arrester performance testing device, comprising the portable surge arrester performance testing device according to any one of claims 1-8, characterized in that, Includes the following steps: S1. Unfolding device: Unfold the box cover (2) from the DC high voltage generator (1) to expose the placement cavity (21) to the testing station, and achieve a stable connection between the DC high voltage generator (1) and the test circuit on the box cover (2) through the cable (3); S2. Place the surge arrester: Place the surge arrester body (5) to be tested one by one on the contact terminal (4) in the placement cavity (21), so that the high voltage end and low voltage end of each surge arrester body (5) are connected to the two test branches (32) of the corresponding contact terminal (4) respectively. S3. Select the test station: Close the switch (23) on the test branch (32) corresponding to the high voltage side of the target surge arrester body (5) to make the test circuit of this station open; keep the switch (23) corresponding to the other surge arrester bodies (5) in the open state to avoid interfering with the current test; S4. Start detection: Turn on the DC high voltage generator (1), and the DC high voltage is conducted to the target surge arrester body (5) through the test main line (31) and the connected test branch line (32). The test current is monitored in real time by the microammeter built into the DC high voltage generator (1) to complete the performance test of the surge arrester body (5) and record the data. S5. Switching and Continuing Test: Disconnect the switch (23) of the current station, repeat steps S3-S4, and turn on the switch (23) of the other stations in sequence to complete the performance test of all surge arrester bodies (5) to be tested; S6. Storage device: After the test is completed, remove all surge arrester bodies (5), disconnect the power supply of DC high voltage generator (1), and reset the box cover (2) onto DC high voltage generator (1) to realize the portable storage of the device.

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