A high voltage test device for high voltage detection of electric energy meter

Abstract

The present invention discloses a high-voltage test device for high-voltage resistance detection of electric energy meters, and relates to the field of high-voltage resistance test of electric energy meters. The device comprises a workbench, a conveyor is arranged on the top of the workbench, and a test limit mechanism is arranged on the top of the conveyor; a bracket is arranged at one end of the test limit mechanism, an electric energy meter positioning clamping mechanism is arranged on the top of the bracket, a plurality of electric energy meters are arranged at the bottom of the electric energy meter positioning clamping mechanism, and a detection needle telescopic mechanism is arranged on the side of the electric energy meter. The present invention can automatically complete the high-voltage resistance test of the electric energy meter, has high safety, high fault tolerance, and improves the accuracy and reliability of the test; the current needle and the signal needle are in a fine-tunable state, so that the current needle and the signal needle have a higher probability and are easier to automatically insert into the electric energy meter; before the high-voltage resistance test, the dust and impurities on the surface are cleaned to avoid affecting the test accuracy and reliability of the current needle and the signal needle.

Description

Technical Field

[0001] The invention relates to the field of high voltage resistance testing of electric energy meters, and in particular to a high voltage resistance testing device for high voltage resistance testing of electric energy meters. Background Art

[0002] The electric energy meter is an instrument used to measure the consumption of electric energy. It is widely used in industrial, commercial and residential electricity consumption. The performance and quality of the electric energy meter directly affect the safety and economic benefits of power supply. Therefore, it is very important to accurately and effectively detect the electric energy meter. The high voltage test of the electric energy meter is a test method used to check whether the electric energy meter can work normally under high voltage environment. In the power system, the electric energy meter usually needs to withstand a certain voltage to ensure that it can stably and accurately measure the electric energy consumption under normal operating conditions. The high voltage test is to verify the tolerance of the electric energy meter in the event of abnormal power grid conditions or emergencies. The traditional high voltage test method is to manually install the probe, connect the high voltage power supply to the wiring hole of the electric energy meter, and then observe whether the electric energy meter is working normally.

[0003] With the increasing demand for high-voltage resistance testing of electric energy meters, automatic high-voltage resistance testing devices have emerged. For example, Chinese Patent 201110077573.0 discloses an electric energy meter withstand voltage testing device, which includes a longitudinal crimping drive mechanism, a wiring terminal that can move longitudinally, a drive control module, and a test module connected to the wiring terminal. It does not require manual pin insertion and manual access to high voltage electricity, thereby improving the safety of the test. However, the above device still has the following shortcomings. When a number of electric energy meters are transported to the test position, their detection needles are fixedly connected to the terminal seat. Such a design requires that the position of the probe must be very accurate, otherwise the probe will not easily enter the electric energy meter, making the test impossible. At the same time, the probe may be stained with dust and impurities, and the test device in the prior art does not have corresponding processing means, which may reduce the accuracy and reliability of the test.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a high voltage resistance testing device for high voltage resistance detection of an electric energy meter, so as to overcome the above technical problems existing in the existing related art.

[0006] To this end, the specific technical solution adopted by the present invention is as follows:

[0007] A high-voltage resistance testing device for high-voltage resistance testing of electric energy meters comprises a workbench, a conveyor is arranged on the top of the workbench, a test limit mechanism is arranged on the top of the conveyor; a bracket is arranged at one end of the test limit mechanism, an electric energy meter positioning and clamping mechanism is arranged on the top of the bracket, a plurality of electric energy meters are arranged at the bottom of the electric energy meter positioning and clamping mechanism, and a detection needle telescopic mechanism is arranged on the side of the electric energy meter.

[0008] Furthermore, in order to be able to limit the electric energy meter, bracket, etc. transmitted by the conveyor to a specific position on the top of the conveyor, so that the position of the electric energy meter is determined, which is conducive to the subsequent high-voltage resistance test of the electric energy meter, the test limit mechanism includes two first connecting bases arranged on both sides of the top of the conveyor, a connecting plate is arranged between the two first connecting bases, and limiting plates are arranged at one end of the connecting plate close to the bracket and on both sides of the bracket, and an inclined plate is arranged at the end of the limiting plate away from the connecting plate, and the inclined plate gradually tilts outward in the direction away from the limiting plate.

[0009] Furthermore, in order to reduce the impact of the bracket and facilitate the safety of related components such as the electric energy meter, the test limit mechanism also includes a number of fixed blocks arranged in the middle of the connecting plate, a cavity is arranged in the fixed block, a buffer spring is arranged in the cavity, a sliding block is arranged at one end of the buffer spring close to the bracket, a buffer plate is arranged between the ends of the sliding blocks close to the bracket, a contact switch is arranged at the end of the fixed block away from the bracket, and a protruding rod is arranged between the sliding block and the contact switch.

[0010] Furthermore, in order to conveniently position the electric energy meter on the bracket, improve the clamping efficiency of the electric energy meter, and enable multiple electric energy meters to be tested for high voltage resistance at the same time, the electric energy meter positioning and clamping mechanism includes a mounting frame arranged at the top of the bracket, and a horizontal positioning block and a vertical positioning block are respectively arranged at the top of the bracket and at two side walls adjacent to the electric energy meter; the electric energy meter positioning and clamping mechanism also includes a mounting shell arranged on the top of the mounting frame and above the electric energy meter, and slide grooves are arranged on both sides of the interior of the mounting shell, and a slider is arranged in the slide groove, and a vertical connecting rod is arranged at the bottom end of the slider, and the bottom end of the vertical connecting rod passes through the bottom of the mounting shell and extends to the bottom of the mounting shell, and a horizontal connecting rod is arranged at the bottom end of the vertical connecting rod, and an electric energy meter hole positioning block is arranged at the bottom end of the horizontal connecting rod.

[0011] Furthermore, in order to improve the fault tolerance rate and eliminate the need for multiple manual adjustments, which is beneficial to improving the overall testing efficiency, a rack is provided at one end of the slider close to the middle position of the mounting shell, a gear rack is provided between the two racks, and a gear meshing with the two racks is provided on the side wall of the gear rack; a first electric cylinder is provided at the top of the mounting frame and above the mounting shell, and the bottom end of the output shaft of the first electric cylinder passes through the top of the mounting frame and is connected to the top of the gear rack.

[0012] Furthermore, in order to automatically drive the current needle and the signal needle to be inserted into the electric energy meter for high-voltage resistance detection, and by adjusting the design of the spring, the current needle and the signal needle are in a fine-tunable state, so that the current needle and the signal needle have a higher probability and are easier to automatically insert into the electric energy meter, the detection needle retractable mechanism includes a plurality of second connecting bases arranged on the sides of the electric energy meters and located at the top of the workbench, a second electric cylinder is arranged on the top side wall of the second connecting base, a connecting frame is arranged on the side of the second connecting base close to the electric energy meter, a mounting cavity is arranged on the side of the connecting frame close to the electric energy meter, and a side of the connecting frame away from the electric energy meter is connected to the output shaft of the second electric cylinder Connection; connecting ears are provided at both ends of the connecting frame, and two sliding rods are provided on the side walls of the second connecting base, and the middle part of the sliding rod is inserted in the connecting ear; two fixed rods are provided inside the installation cavity, and a detection needle connecting plate is provided in the middle of the fixed rod, and a circular hole matching with the two fixed rods is provided at the bottom of the detection needle connecting plate, and an adjustment spring is provided between the two sides of the detection needle connecting plate and the inner wall of the installation cavity and on the outer side of the fixed rod; a gas collecting plate, a plurality of current needles and a plurality of signal needles are provided on the side of the detection needle connecting plate close to the electric energy meter; a plurality of first avoidance holes and a plurality of second avoidance holes corresponding to the plurality of current needles and the plurality of signal needles are provided in the gas collecting plate.

[0013] Furthermore, in order to remove dust and impurities on the surface before the high-voltage resistance test to avoid affecting the test accuracy and reliability of the current needle and the signal needle, and to increase the airflow speed, the dust and impurities removal effect is better, the detection needle retractable mechanism also includes a transverse air hole arranged in the air collecting plate, and connecting ports are arranged at both ends of the transverse air hole, and connecting holes are arranged between the transverse air hole and the first avoidance hole and the second avoidance hole; blocking tubes are arranged inside the first avoidance hole and the second avoidance hole and on the outside of the current needle and the signal needle, and a first air guide hole connected to the connecting hole is arranged inside the blocking tube, and the second air guide hole is connected to the second air guide hole on the side of the first air guide hole close to the electric energy meter, and a contraction tube is arranged on the side of the second air guide hole close to the electric energy meter, and a throat is arranged on the end of the contraction tube away from the second air guide hole, and a nozzle is arranged on the end of the throat away from the contraction tube.

[0014] The beneficial effects of the present invention are:

[0015] (1) The present invention can automatically complete the high voltage resistance test of the electric energy meter, has high safety and high fault tolerance, and improves the accuracy and reliability of the test.

[0016] (2) By setting up a test limit mechanism, the electric energy meter, bracket, etc. transmitted by the conveyor can be limited to a specific position on the top of the conveyor, so that the position of the electric energy meter is determined, which is beneficial to the subsequent high-voltage resistance test of the electric energy meter. The impact of the bracket is reduced by the action of the buffer spring and the buffer plate, which is beneficial to the safety of the electric energy meter and other related components.

[0017] (3) By setting up an electric energy meter positioning and clamping mechanism, the electric energy meter can be conveniently positioned on the bracket, thereby improving the clamping efficiency of the electric energy meter, so that multiple electric energy meters can be tested for high voltage resistance at the same time with high fault tolerance and without the need for multiple manual adjustments, which is conducive to improving the overall test efficiency.

[0018] (4) By setting up a detection needle retractable mechanism, the current needle and the signal needle can be automatically driven to be inserted into the electric energy meter for high-voltage resistance testing. By adjusting the design of the spring, the current needle and the signal needle can be fine-tuned, so that the current needle and the signal needle have a higher probability and are easier to automatically insert into the electric energy meter. At the same time, the air flow is blown to the current needle and the signal needle through the air collecting plate, the blocking tube, the first air guide hole, the second air guide hole, etc., and then before the high-voltage resistance test, the dust and impurities on the surface are removed to avoid affecting the test accuracy and reliability of the current needle and the signal needle. By designing the contraction tube, the throat and the nozzle, the air flow speed is increased, and the dust and impurities removal effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a structural schematic diagram of a high voltage resistance testing device for high voltage resistance detection of an electric energy meter according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 It is a partial cross-sectional view of a test limit mechanism in a high voltage resistance test device for high voltage resistance detection of an electric energy meter according to an embodiment of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the top of a bracket in a high voltage resistance testing device for high voltage resistance testing of an electric energy meter according to an embodiment of the present invention;

[0024] Figure 5 It is a partial cross-sectional view of an electric energy meter positioning and clamping mechanism in a high voltage resistance testing device for high voltage resistance testing of an electric energy meter according to an embodiment of the present invention;

[0025] Figure 6 It is a structural schematic diagram of a detection needle retracting mechanism in a high voltage resistance testing device for high voltage resistance testing of an electric energy meter according to an embodiment of the present invention;

[0026] Figure 7 It is a structural schematic diagram of a gas collecting plate in a high voltage resistance testing device for high voltage resistance testing of an electric energy meter according to an embodiment of the present invention;

[0027] Figure 8 The present invention is a cross-sectional view of a pipe blockage in a high voltage resistance testing device for high voltage resistance detection of an electric energy meter according to an embodiment of the present invention.

[0028] In the figure:

[0029] 1. Workbench; 2. Conveyor; 3. Test limit mechanism; 301. First connecting base; 302. Connecting plate; 303. Limit plate; 304. Inclined plate; 305. Fixed block; 306. Cavity; 307. Buffer spring; 308. Sliding block; 309. Buffer plate; 310. Contact switch; 311. Protruding rod; 4. Bracket; 5. Electric energy meter positioning clamping mechanism; 501. Mounting frame; 502. Horizontal positioning block; 503. Longitudinal positioning block; 504. Mounting shell; 505. Slide; 506. Slider; 507. Vertical connecting rod; 508. Horizontal connecting rod; 509. Electric energy meter hole positioning block; 510. Rack; 511. Gear rack; 512. Gear ; 513, first electric cylinder; 6, electric energy meter; 7, detection needle telescopic mechanism; 701, second connecting base; 702, second electric cylinder; 703, connecting frame; 704, mounting cavity; 705, connecting ear; 706, fixing rod; 707, detection needle connecting plate; 708, round hole; 709, adjusting spring; 710, gas collecting plate; 711, current needle; 712, signal needle; 713, first avoidance hole; 714, second avoidance hole; 715, horizontal air hole; 716, connecting port; 717, connecting hole; 718, blocking pipe; 719, first air guide hole; 720, second air guide hole; 721, contraction tube; 722, throat; 723, nozzle; 724, sliding rod. DETAILED DESCRIPTION

[0030] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0031] According to an embodiment of the present invention, a high voltage resistance testing device for high voltage resistance detection of an electric energy meter is provided.

[0032] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-Figure 2As shown, a high-voltage test device for high-voltage test of electric energy meters according to an embodiment of the present invention includes a workbench 1, a conveyor 2 is arranged on the top of the workbench 1, and a test limit mechanism 3 is arranged on the top of the conveyor 2; a bracket 4 is arranged at one end of the test limit mechanism 3, an electric energy meter positioning and clamping mechanism 5 is arranged on the top of the bracket 4, a plurality of electric energy meters 6 are arranged at the bottom of the electric energy meter positioning and clamping mechanism 5, and a detection needle retracting mechanism 7 is arranged on the side of the electric energy meter 6.

[0033] The present invention can automatically complete the high voltage resistance test of the electric energy meter, has high safety and high fault tolerance, and improves the accuracy and reliability of the test.

[0034] like Figure 1 and Figure 3 As shown, in one embodiment, for the above-mentioned test limit mechanism 3, the test limit mechanism 3 includes two first connecting bases 301 arranged on both sides of the top of the conveyor 2, a connecting plate 302 is arranged between the two first connecting bases 301, and the connecting plate 302 is close to one end of the bracket 4 and is located on both sides of the bracket 4. A limit plate 303 is arranged, and an inclined plate 304 is arranged at one end of the limit plate 303 away from the connecting plate 302, and the inclined plate 304 gradually tilts outward in the direction away from the limit plate 303; the test limit mechanism 3 also includes a plurality of fixed blocks 305 arranged in the middle of the connecting plate 302, and a cavity 306 is arranged in the fixed block 305, and a cavity 306 is arranged in the cavity 306. A buffer spring 307 is provided with a sliding block 308 at one end of the buffer spring 307 close to the bracket 4, a buffer plate 309 is provided between the ends of the sliding blocks 308 close to the bracket 4, a contact switch 310 is provided at the end of the fixed block 305 away from the bracket 4, and a protruding rod 311 is provided between the sliding block 308 and the contact switch 310, so that the electric energy meter 6, bracket 4, etc. transmitted by the conveyor 2 can be restricted to a specific position on the top of the conveyor 2, so that the position of the electric energy meter 6 is determined, which is beneficial to the subsequent high-voltage resistance test of the electric energy meter, and through the action of the buffer spring 307 and the buffer plate 309, the impact of the bracket 4 is reduced, which is beneficial to the safety of the electric energy meter 6 and other related components.

[0035] The working principle of the test limit mechanism 3 is as follows: the setting of the limit plate 303 and the inclination of the inclined plate 304 limit the electric energy meter 6 and the bracket 4 etc. transmitted by the conveyor 2 to a specific position on the top of the conveyor 2. When the protruding rod 311 contacts the contact switch 310, it is electrically connected to the external control panel to stop the conveyor 2 from transmitting, thereby preventing the electric energy meter 6 and the bracket 4 etc. from moving. The buffer spring 307 and the buffer plate 309 reduce the impact of the bracket 4 and ensure the safety of the electric energy meter 6 and other components.

[0036] like Figure 4 and Figure 5As shown, in one embodiment, for the above-mentioned electric energy meter positioning and clamping mechanism 5, the electric energy meter positioning and clamping mechanism 5 includes a mounting frame 501 arranged at the top of the bracket 4, and a horizontal positioning block 502 and a vertical positioning block 503 are respectively arranged at the top of the bracket 4 and at the two side walls adjacent to the electric energy meter 6; the electric energy meter positioning and clamping mechanism 5 also includes a mounting shell 504 arranged at the top of the mounting frame 501 and located above the electric energy meter 6, and the inner sides of the mounting shell 504 are provided with slide grooves 505, and a slider 506 is arranged in the slide groove 505, and a vertical connecting rod 507 is arranged at the bottom end of the slider 506, and the bottom end of the vertical connecting rod 507 passes through the bottom of the mounting shell 504 and extends to the bottom of the mounting shell 504, and the bottom end of the vertical connecting rod 507 is provided with a horizontal connecting rod 50 8. An electric energy meter hole positioning block 509 is provided at the bottom end of the transverse connecting rod 508; a rack 510 is provided at one end of the slider 506 close to the middle position of the mounting shell 504, a gear rack 511 is provided between the two racks 510, and a gear 512 meshing with the two racks 510 is provided on the side wall of the gear rack 511; a first electric cylinder 513 is provided at the top of the mounting frame 501 and above the mounting shell 504, and the bottom end of the output shaft of the first electric cylinder 513 passes through the top of the mounting frame 501 and is connected to the top of the gear rack 511, so that the electric energy meter 6 can be conveniently positioned on the bracket 4, thereby improving the clamping efficiency of the electric energy meter 6, so that multiple electric energy meters 6 can be subjected to high voltage resistance testing at the same time, and the fault tolerance rate is high, and multiple manual adjustments are not required, which is conducive to improving the overall testing efficiency.

[0037] The working principle of the electric energy meter positioning and clamping mechanism 5 is as follows: the two adjacent side walls of the electric energy meter 6 are respectively pressed against the horizontal positioning block 502 and the longitudinal positioning block 503 for preliminary positioning; the first electric cylinder 513 is started, and the output shaft of the first electric cylinder 513 drives the gear 512 to descend, and the gear 512 drives the two racks 510 to descend, and then the components connected to the rack 510 can be lowered, so that the electric energy meter hole positioning block 509 can be inserted into the hole on the electric energy meter 6, so that the electric energy meter 6 remains stable, and when one electric energy meter hole positioning block 509 cannot be inserted into the corresponding hole on the electric energy meter 6, the other electric energy meter hole positioning block 509 can still continue to descend, that is, only one electric energy meter hole positioning block 509 needs to be inserted into the corresponding hole on the electric energy meter 6 to fix the electric energy meter 6, and the fault tolerance rate is improved. After the test is completed, the output shaft of the first electric cylinder 513 is recovered, the gear 512 rises, and the electric energy meter hole positioning block 509 is electrically driven to leave the energy meter 6, and the tested energy meter 6 can be removed.

[0038] like Figure 6-Figure 8As shown, in one embodiment, for the above-mentioned detection needle retractable mechanism 7, the detection needle retractable mechanism 7 includes a plurality of second connection bases 701 arranged on the sides of the plurality of electric energy meters 6 and located at the top of the workbench 1, a second electric cylinder 702 is arranged on the top side wall of the second connection base 701, a connection frame 703 is arranged on the side of the second connection base 701 close to the electric energy meter 6, a mounting cavity 704 is arranged on the side of the connection frame 703 close to the electric energy meter 6, and a side of the connection frame 703 away from the electric energy meter 6 is connected to the output shaft of the second electric cylinder 702; both ends of the connection frame 703 are provided with The connecting ear 705 and the side wall of the second connecting base 701 are provided with two sliding rods 724, and the middle part of the sliding rod 724 is inserted in the connecting ear 705; the interior of the installation cavity 704 is provided with two fixing rods 706, and the middle part of the fixing rod 706 is provided with a detection needle connecting plate 707, and the bottom of the detection needle connecting plate 707 is provided with a circular hole 708 matched with the two fixing rods 706, and the two sides of the detection needle connecting plate 707 are between the inner wall of the installation cavity 704 and located on the outer side of the fixing rod 706. The side of the detection needle connecting plate 707 close to the electric energy meter 6 A gas collecting plate 710, a plurality of current pins 711 and a plurality of signal pins 712 are provided, wherein high voltage electricity is introduced through the current pins 711 to perform a high voltage resistance test on the electric energy meter 6, and the test data is sent to an external test module through the signal pins 712 to determine whether the electric energy meter 6 is qualified, that is, various parameters of the electric energy meter 6 in the high voltage resistance test are formulated according to relevant electrical safety specifications and standards, and the data obtained from the actual test are compared with the set parameters. If the actual parameters meet or exceed the standards, it can be determined that the electric energy meter 6 is qualified in the high voltage environment; the gas collecting plate 710 is provided with a plurality of current pins 711 and a plurality of signal pins 712. The current needle 711 and the signal needles 712 correspond to the first avoidance holes 713 and the second avoidance holes 714; the detection needle telescopic mechanism 7 also includes a transverse air hole 715 arranged in the gas collecting plate 710, and both ends of the transverse air hole 715 are provided with connection ports 716. When in use, the connection ports 716 are provided with corresponding threads and connected with the corresponding air pipe interface to facilitate the introduction of external gas into the gas collecting plate 710. A connection hole 717 is provided between the transverse air hole 715 and the first avoidance hole 713 and the second avoidance hole 714, and the connection hole 717 is provided with a plug for plugging;A blocking tube 718 is provided inside the first avoidance hole 713 and the second avoidance hole 714 and outside the current needle 711 and the signal needle 712. A first air guide hole 719 connected to the connection hole 717 is provided inside the blocking tube 718. The first air guide hole 719 is connected to the second air guide hole 720 on the side close to the electric energy meter 6. A shrink tube 721 is provided on the side close to the electric energy meter 6 of the second air guide hole 720. A throat 722 is provided at one end of the shrink tube 721 away from the second air guide hole 720. A nozzle 723 is provided at one end of the throat 722 away from the shrink tube 721, so that the current needle 711 and the signal needle 712 can be automatically driven to be inserted into the electric energy meter 6 for high voltage resistance detection, and through The design of the over-adjusting spring 709 makes the current needle 711 and the signal needle 712 finely adjustable, so that the current needle 711 and the signal needle 712 have a higher probability and are easier to automatically insert into the electric energy meter 6. At the same time, the air flow is blown to the current needle 711 and the signal needle 712 through the air collecting plate 710, the blocking tube 718, the first air guide hole 719, the second air guide hole 720, etc., and then the dust and impurities on the surface are removed before the high-voltage resistance test to prevent the current needle 711 and the signal needle 712 from affecting the accuracy and reliability of the test. The design of the shrink tube 721, the throat 722, and the nozzle 723 increases the speed of the air flow, and the dust and impurities removal effect is better. ;

[0039] The working principle of the detection needle retractable mechanism 7 is as follows: before the high-voltage resistance test, the external gas source is connected to the connection port 716, so that the gas enters the transverse air hole 715, and the gas enters the contraction tube 721 along the connection hole 717, the first air guide hole 719, and the second air guide hole 720, and the gas flow rate is increased through the acceleration of the contraction tube 721, the throat 722, and the nozzle 723, and the dust and impurities on the surface of the current needle 711 and the signal needle 712 are removed. Start the second electric cylinder 702, the second electric cylinder 702 drives the connection frame 703 and its connected parts forward, and drives the current needle 711 and the signal needle 712 to be inserted into the electric energy meter 6 and perform the high-voltage resistance test. After the test is completed, the output shaft of the second electric cylinder 702 is recovered, driving the connection frame 703 and its connected parts to return to their original position.

[0040] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0041] In actual application, the electric energy meter 6 is clamped and fixed by the electric energy meter positioning clamping mechanism 5. The bracket 4, the electric energy meter positioning clamping mechanism 5 and the electric energy meters 6 are conveyed forward by the conveyor 2, and the bracket 4, the electric energy meter positioning clamping mechanism 5 and the electric energy meters 6 are stopped at the preset position by the test limit mechanism 3. The high voltage resistance test of the electric energy meter 6 is completed by the detection needle retracting mechanism 7. After the test is completed, the above operation is reversed, so that the electric energy meter 6 returns to the original position and is removed.

[0042] In summary, the present invention can automatically complete the high-voltage resistance test of the electric energy meter, with high safety and high fault tolerance, and improves the accuracy and reliability of the test. By setting the test limit mechanism 3, the electric energy meter 6, the bracket 4, etc. transmitted by the conveyor 2 can be limited to a specific position on the top of the conveyor 2, so that the position of the electric energy meter 6 is determined, which is beneficial to the subsequent high-voltage resistance test of the electric energy meter, and through the action of the buffer spring 307 and the buffer plate 309, the impact of the bracket 4 is reduced, which is beneficial to the safety of the electric energy meter 6 and other related parts. By setting the electric energy meter positioning and clamping mechanism 5, the electric energy meter 6 can be conveniently positioned on the bracket 4, and the clamping efficiency of the electric energy meter 6 is improved, so that multiple electric energy meters 6 can be subjected to high-voltage resistance tests at the same time, and the fault tolerance is high, and multiple manual adjustments are not required, which is beneficial to improving the overall test efficiency. By setting up the detection needle retractable mechanism 7, the current needle 711 and the signal needle 712 can be automatically driven to be inserted into the electric energy meter 6 for high-voltage resistance detection, and by adjusting the design of the spring 709, the current needle 711 and the signal needle 712 are in a fine-tunable state, so that the current needle 711 and the signal needle 712 have a higher probability and are easier to automatically insert into the electric energy meter 6. At the same time, the air flow is blown to the current needle 711 and the signal needle 712 through the air collecting plate 710, the blocking tube 718, the first air guide hole 719, the second air guide hole 720, etc., and then before the high-voltage resistance test, the dust and impurities on the surface are cleared to avoid affecting the test accuracy and reliability of the current needle 711 and the signal needle 712. By designing the contraction tube 721, the throat 722, and the nozzle 723, the air flow speed is increased, and the dust and impurities removal effect is better.

[0043] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high voltage test device for high voltage test of an electric energy meter, comprising a workbench (1), characterized in that: A conveyor (2) is provided at the top of the workbench (1), and a test limit mechanism (3) is provided at the top of the conveyor (2); A bracket (4) is provided at one end of the test limit mechanism (3); an electric energy meter positioning and clamping mechanism (5) is provided at the top of the bracket (4); a plurality of electric energy meters (6) are provided at the bottom of the electric energy meter positioning and clamping mechanism (5); and a detection needle retracting mechanism (7) is provided on the side of the electric energy meter (6); The electric energy meter positioning and clamping mechanism (5) comprises a mounting frame (501) arranged at the top of the bracket (4), and a transverse positioning block (502) and a longitudinal positioning block (503) are respectively arranged at the top of the bracket (4) and at two side walls adjacent to the electric energy meter (6); The electric energy meter positioning and clamping mechanism (5) further comprises a mounting shell (504) arranged on the top of the mounting frame (501) and located above the electric energy meter (6); slide grooves (505) are arranged on both sides of the interior of the mounting shell (504); a slider (506) is arranged in the slide groove (505); a vertical connecting rod (507) is arranged at the bottom end of the slider (506); the bottom end of the vertical connecting rod (507) passes through the bottom of the mounting shell (504) and extends to the bottom of the mounting shell (504); a transverse connecting rod (508) is arranged at the bottom end of the vertical connecting rod (507); and an electric energy meter hole positioning block (509) is arranged at the bottom end of the transverse connecting rod (508); A rack (510) is disposed at one end of the slider (506) close to the middle position of the mounting housing (504), a gear rack (511) is disposed between the two racks (510), and a gear (512) meshing with the two racks (510) is disposed on a side wall of the gear rack (511); A first electric cylinder (513) is arranged at the top of the mounting frame (501) and above the mounting housing (504); the bottom end of the output shaft of the first electric cylinder (513) passes through the top of the mounting frame (501) and is connected to the top of the gear frame (511); The detection needle retractable mechanism (7) comprises a plurality of second connection bases (701) arranged on the side of the plurality of electric energy meters (6) and located at the top of the workbench (1); a second electric cylinder (702) is arranged on the top side wall of the second connection base (701); a connection frame (703) is arranged on the side of the second connection base (701) close to the electric energy meter (6); a mounting cavity (704) is arranged on the side of the connection frame (703) close to the electric energy meter (6); and a side of the connection frame (703) away from the electric energy meter (6) is connected to the output shaft of the second electric cylinder (702); Both ends of the connection frame (703) are provided with connection ears (705); the side wall of the second connection base (701) is provided with two sliding rods (724), and the middle part of the sliding rod (724) is inserted into the connection ear (705); Two fixing rods (706) are arranged inside the installation cavity (704); a detection needle connecting plate (707) is arranged in the middle of the fixing rod (706); a round hole (708) matching with the two fixing rods (706) is arranged at the bottom of the detection needle connecting plate (707); and an adjustment spring (709) is sleeved between the two sides of the detection needle connecting plate (707) and the inner wall of the installation cavity (704) and located on the outer side of the fixing rod (706); A gas collecting plate (710), a plurality of current needles (711) and a plurality of signal needles (712) are provided on one side of the detection needle connecting plate (707) close to the electric energy meter (6); A plurality of first avoidance holes (713) and a plurality of second avoidance holes (714) corresponding to the plurality of current needles (711) and the plurality of signal needles (712) are arranged in the gas collecting plate (710); The detection needle retractable mechanism (7) further comprises a transverse air hole (715) arranged in the air collecting plate (710), both ends of the transverse air hole (715) are provided with connecting ports (716), and connecting holes (717) are provided between the transverse air hole (715) and the first avoidance hole (713) and the second avoidance hole (714); A blocking tube (718) is provided inside the first avoidance hole (713) and the second avoidance hole (714) and outside the current needle (711) and the signal needle (712); a first air guide hole (719) connected to the connection hole (717) is provided inside the blocking tube (718); a second air guide hole (720) is connected to the first air guide hole (719) on a side close to the electric energy meter (6); a shrink tube (721) is provided on a side close to the electric energy meter (6); a throat (722) is provided at one end of the shrink tube (721) away from the second air guide hole (720); and a nozzle (723) is provided at one end of the throat (722) away from the shrink tube (721).

2. A high voltage test device for high voltage test of electric energy meter according to claim 1, characterized in that: The test limit mechanism (3) comprises two first connection bases (301) arranged on both sides of the top end of the conveyor (2); a connection plate (302) is arranged between the two first connection bases (301); a limit plate (303) is arranged at one end of the connection plate (302) close to the bracket (4) and on both sides of the bracket (4); an inclined plate (304) is arranged at one end of the limit plate (303) away from the connection plate (302); and the inclined plate (304) gradually tilts outwards in a direction away from the limit plate (303).

3. A high voltage test device for high voltage test of electric energy meter according to claim 2, characterized in that: The test limit mechanism (3) further comprises a plurality of fixed blocks (305) arranged in the middle of the connecting plate (302), a cavity (306) being arranged in the fixed block (305), a buffer spring (307) being arranged in the cavity (306), a sliding block (308) being arranged at one end of the buffer spring (307) close to the bracket (4), a buffer plate (309) being arranged between one end of the plurality of sliding blocks (308) close to the bracket (4), a contact switch (310) being arranged at one end of the fixed block (305) away from the bracket (4), and a convex rod (311) being arranged between the sliding block (308) and the contact switch (310).

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