CN108957051A - Portable field change of current valve tester - Google Patents

Portable field change of current valve tester Download PDF

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Publication number
CN108957051A
CN108957051A CN201811185996.2A CN201811185996A CN108957051A CN 108957051 A CN108957051 A CN 108957051A CN 201811185996 A CN201811185996 A CN 201811185996A CN 108957051 A CN108957051 A CN 108957051A
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CN
China
Prior art keywords
tester
sliding sleeve
rectangle
bottom plate
current valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201811185996.2A
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Chinese (zh)
Other versions
CN108957051B (en
Inventor
孙洗凡
高炜
马龙
刘冬
张洪辉
李�浩
任众楷
程宁
王健
杨勇
于洋
高鹏
姚原
冯迎春
杨晓滨
赵庆磊
张鹏
郝卫华
刘金鑫
韩金涛
岑威
衣俸君
袁茂凯
师聪
张晓辰
李雨轩
孙钦佩
李天博
杨磊杰
安博
刘通
杜彦镔
孙聪泽
郑萧若
丁昶凯
王晓冬
宋臻吉
陈大庆
代海涛
高栋
陈飞
孙世伟
崔国强
王子龙
杨韦国
孙守朋
范立明
吴名星
吴布托
丁厦
赵永正
邱烽
樊晓伟
焦浩
程浩
公薪宇
程子龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Maintenance Branch of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Maintenance Branch of State Grid Shandong Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Maintenance Branch of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201811185996.2A priority Critical patent/CN108957051B/en
Publication of CN108957051A publication Critical patent/CN108957051A/en
Application granted granted Critical
Publication of CN108957051B publication Critical patent/CN108957051B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/04Housings; Supporting members; Arrangements of terminals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00Castors in general; Anti-clogging castors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

Portable field change of current valve tester includes change of current valve tester, the change of current valve tester has tester bottom plate, the tester bottom plate is rectangle, a rectangle sliding sleeve is respectively provided at two side positions of tester bottom plate, the rectangle sliding sleeve is arranged along the length direction of tester bottom plate, each rectangle sliding sleeve and tester bottom plate pass through hinged axis connection, torsional spring is designed on each articulated shaft, torsional spring has the tendency that being turned out always by its corresponding rectangle sliding sleeve, the rectangle slide plate that can be slided up and down in it is equipped in each rectangle sliding sleeve, the top of the rectangle slide plate is equipped with locating piece, locating piece can drop down onto the top of rectangle sliding sleeve.The positive effect of the present invention is: will not be opened accidentally because of situations such as shaking when carrying into engineering truck, the safety of operator is also assured while improving service life of equipment.

Description

Portable field change of current valve tester
Technical field
The invention belongs to test equipment technology, specifically a kind of portable field change of current valve tester.
Background technique
Converter valve is one of significant components of converter station, its safe operation is an important ring for power grid security, customary Service work is unique effective guarantee means.Change of current station equipment is intensive, equipment spacing is small, and engineering truck can not be travelled directly It needs staff to remove tester from engineering truck near converter valve equipment, when testing converter valve and carries to changing It flows near valve, since detector own wt is relatively large, to be carried convenient for staff, usually installs and roll in detector bottom Wheel, is towed by staff to scene.The converter station of the converter station and remote districts built is often without carrying out ground Face is mated formation hardening, and ground flat degree is poor, and especially ground is more muddy after rain, and the idler wheel of minor diameter is difficult to lead on this ground Row, and the idler wheel for installing major diameter additional can then make integral device that can not store in engineering truck, bring for the service work of converter valve Difficulty.
Summary of the invention
To solve the above problems, being surveyed the purpose of the present invention is to provide a kind of portable field change of current valve tester Examination instrument bottom plate two sides are mounted with the movable pulley of major diameter, keep tester bottom plate higher apart from ground, are suitable for complex road condition, significantly Promote its passage capacity.And movable pulley can be folded to the two sides of change of current valve tester, make entirety under the drive of rectangle sliding sleeve The longitudinal direction of equipment highly greatly reduces, and uses in order to be stored in shift among engineering truck.
The technical solution adopted by the present invention to solve the technical problems is: the portable field change of current valve tester packet Change of current valve tester is included, the change of current valve tester has tester bottom plate, and the tester bottom plate is rectangle, is testing A rectangle sliding sleeve is respectively provided at two side positions of instrument bottom plate, the rectangle sliding sleeve is arranged along the length direction of tester bottom plate, Each rectangle sliding sleeve and tester bottom plate are designed with torsional spring on each articulated shaft, torsional spring is by its corresponding rectangle by hinged axis connection Sliding sleeve has the tendency that being turned out always, and the rectangle slide plate that can be slided up and down in it, the square are equipped in each rectangle sliding sleeve The top of shape slide plate is equipped with locating piece, and locating piece can drop down onto the top of rectangle sliding sleeve, and the outside of rectangle slide plate bottom is equal If being equipped with movable pulley on each wheel shaft there are two wheel shaft, it is all provided with that there are two bar shaped sliding slot, the items on the outside of the rectangle sliding sleeve The location of shape sliding slot is corresponding with wheel shaft, is equipped with rectangular frame, the width of the rectangular frame in the top of tester bottom plate Degree direction is connected with the width direction of tester bottom plate by V-type bracket, when each rectangle sliding sleeve is perpendicular to tester bottom plate, The top of rectangle slide plate inside rectangle sliding sleeve can be in contact with the bottom end of rectangular frame, and the periphery of the rectangular frame is equipped with It tests connecting line and winds groove.Telescopic rod is installed, telescopic rod lower end is connect with tester bottom plate, on telescopic rod on tester bottom plate End installation remote control holder, is remotely controlled on holder and installs remote control camera and remote control illuminating lamp.The telescopic rod is hollow structure, remote control The power supply line of camera and remote control illuminating lamp be helical spring cable, helical spring cable from telescopic rod inside pass through afterwards with The connection of change of current valve tester.The inside of described two rectangle sliding sleeves is connect with one end of a drawstring respectively, rectangular frame width The bottom in direction is equipped with pulley, and two drawstrings are passed through from pulley, and are connected on same positioning ring.The V-type bracket Between be equipped with location hook, positioning ring can drive drawstring to be suspended on location hook.
The positive effect of the present invention is: tester bottom plate two sides are mounted with the movable pulley of major diameter, make tester bottom plate It is higher apart from ground, it is suitable for complex road condition, greatly promotes its passage capacity.And movable pulley can be in the drive of rectangle sliding sleeve Under, be folded to the two sides of change of current valve tester, greatly reduce the longitudinal direction of integral device highly, in order to be stored in engineering truck it Middle transfer uses.The setting of positioning ring can guarantee that a people can quickly fold up movable pulley and rectangle sliding sleeve, be convenient for More quickly change of current valve tester is come into operation when reaching change of current valve position.It, can be to rectangle when positioning ring is hung on location hook The folded state of sliding sleeve and movable pulley is locked, and will not surprisingly be beaten because of situations such as shaking when carrying into engineering truck It opens, the safety of operator is also assured while improving service life of equipment.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention, is as shown in the figure walking states;
Fig. 2 is the left view structural representation of Fig. 1;
Fig. 3 is the status diagram that structure movable pulley shown in Fig. 1 is turned up;
Fig. 4 is the functional block diagram of change of current valve tester;
Fig. 5 is the connection schematic diagram of local triggering test;
Fig. 6 is the connection schematic diagram of backstage triggering test;
Fig. 7 is the connection schematic diagram of damping test;
Fig. 8 is the connection schematic diagram for pressing complementation test;
Fig. 9 is the structure and assembling schematic diagram of change of current valve tester.
1 tester bottom plate in figure, 2 rectangle sliding sleeves, 3 articulated shafts, 4 torsional springs, 5 rectangle slide plates, 6 locating pieces, 7 wheel shafts, 8 is mobile Wheel, 9 bar shaped sliding slots, 10 change of current valve testers, 11 rectangular frames, 12V type bracket, 13 test connecting lines winding grooves, 14 drawstrings, 15 pulleys, 16 positioning rings, 17 location hooks, 1A front panel, sheet frame before 2A, 3A mainboard, 4A radiator, 5A lower cover plate, 6A fan, 7A Switching Power Supply, 8A right side plate, 9A backplate, 10A upper cover plate, 11A left plate, 12A power resistor, 13A transformer, 14A light Fine pinboard.
Specific embodiment
The portable field change of current valve tester of the present invention includes change of current valve tester 10, the change of current Valve tester 10 has tester bottom plate 1, and the tester bottom plate 1 is rectangle, each at two side positions of tester bottom plate 1 Equipped with a rectangle sliding sleeve 2, the rectangle sliding sleeve 2 is arranged along the length direction of tester bottom plate 1, each rectangle sliding sleeve 2 and test Instrument bottom plate 1 is connected by articulated shaft 3, torsional spring 4 is designed on each articulated shaft 3, torsional spring 4 allows its corresponding rectangle sliding sleeve 2 to have always The trend being turned out is equipped with the rectangle slide plate 5 that can be slided up and down in it in each rectangle sliding sleeve 2, the rectangle slide plate 5 Top is equipped with locating piece 6, and locating piece 6 can drop down onto the top of rectangle sliding sleeve 2, be equipped on the outside of 5 bottom of rectangle slide plate Two wheel shafts 7, are equipped with movable pulley 8 on each wheel shaft 7, and the outside of the rectangle sliding sleeve 2 is all provided with that there are two bar shaped sliding slots 9, described The location of bar shaped sliding slot 9 is corresponding with wheel shaft 7, is equipped with rectangular frame 11, the rectangle frame in the top of tester bottom plate 1 The width direction of frame 11 and the width direction of tester bottom plate 1 are connected by V-type bracket 12, when each rectangle sliding sleeve 2 perpendicular to When tester bottom plate 1, the top of the rectangle slide plate 5 inside rectangle sliding sleeve 2 can be in contact with the bottom end of rectangular frame 11, described The periphery of rectangular frame 11 is equipped with test connecting line and winds groove 13.
When portable field change of current valve tester needs store in engineering truck, promotion rectangle sliding sleeve 2 first is inside It rotates by a certain angle, separates the top of rectangle slide plate 5 and the bottom of rectangular frame 11, movable pulley 8 is then pushed to make to take turns upwards Axis 7 is located at the upper end position of bar shaped sliding slot 9, and movable pulley 8 is detached from ground at this time, positioned at the two sides of change of current valve tester 10, institute Rectangular frame 11 is stated after the support for losing rectangle slide plate 5 and movable pulley 8, under gravity, tester bottom plate 1, two Rectangle sliding sleeve 2, change of current valve tester 10 and rectangular frame 11 are to falling at ground location, and integral device is in longitudinal height at this time On have apparent reduction, convenient for storage be stored on engineering truck, for being transferred to the test job of different places converter valve.
When need with change of current valve tester to remove portable field from engineering truck be moved to converter valve when, can first by Rectangular frame 11 is lifted up, and under the action of self-weight, rectangle slide plate 5 and movable pulley 8 move down, and is made in the thrust of torsional spring 4 Under, rectangle sliding sleeve 2 is rotated outward, when rectangle sliding sleeve 2 is vertical with tester bottom plate 1, as shown in Figure 1, locating piece 6 resists square The inside of shape frame 11 no longer rotates rectangle sliding sleeve 2, and movable pulley 8 is on ground, under 1 two sides of tester bottom plate Side, the rectangle slide plate 5 are that rectangular frame 11 provides support with movable pulley 8, and tester bottom plate 1 is held away from the shape on ground State.The movable pulley 8 can be the movable pulley of major diameter, and tester bottom plate 1 is higher apart from ground, be suitable for complex road condition, greatly Its passage capacity is promoted greatly.The test connecting line of the change of current valve tester can be wrapped in test connecting line winding groove 13, It is moved together with tester, no longer needs to look for additional space, when arriving at change of current valve position, can be connect to store connecting line Line test, has saved the testing time.
Since converter valve is substantially built on stilts installation during installation, ground certain distance is left, tester is to the change of current Valve need to first check the information such as model, the number in converter valve when being tested, the present invention observes the change of current for the ease of construction personnel The information of valve can install telescopic rod 201 on tester bottom plate 1, and 201 lower end of telescopic rod is connect with tester bottom plate 1, telescopic rod 201 upper ends installation remote control holder 202, is remotely controlled on holder 202 and installs remote control camera 203 and remote control illuminating lamp 204.Reach test Behind position, tester can first stretch telescopic rod 201, make to be remotely controlled the rising of holder 202, pass through remote control equipment or mobile phone terminal software It adjusts the angle of remote control holder 202 and shoots the information such as model, the number of converter valve using remote control camera 203, for tester Member veritifies, and when light is bad, can be remotely controlled opening remote control headlamp 204 by remote control equipment or mobile phone terminal software, take the photograph to remote control As first 203 shooting area carries out light filling.It, can also opening remote control photograph when tester carries out docking measurement circuit interface operation Bright lamp 204 is illuminated.
The present invention in order to prevent the power supply line of remote control camera 203 and remote control illuminating lamp 204 influence movable pulley 8 folding It is folded, the telescopic rod 201 can support to hollow structure, the power supply line of remote control camera 203 and remote control illuminating lamp 204 is spiral Spring cable 205, helical spring cable 205 are passed through from 201 inside of telescopic rod and are connect afterwards with change of current valve tester 10.
Preferably, in order to keep the folding operation of whole device more easy, distinguish in the inside of described two rectangle sliding sleeves 2 It is connect with one end of a drawstring 14, the bottom of 11 width direction of rectangular frame is equipped with pulley 15, and two drawstrings 14 are from cunning It passes through, and is connected on same positioning ring 16 in wheel 15.Pull positioning ring 16 that can quickly roll over movable pulley 8 and rectangle sliding sleeve 2 It gathers into folds, completion can be operated in a people, convenient for more quickly change of current valve tester comes into operation when reaching change of current valve position.
Preferably, in order to be placed into portable field more stably in engineering truck with change of current valve tester, V-type bracket 12 Between be additionally provided with location hook 17, positioning ring 16 can drive drawstring 14 to be suspended on location hook 17.Positioning ring 16 is hung on location hook 17 When, the folded state of rectangle sliding sleeve 2 and movable pulley 8 can be locked, it will not be due to shaking etc. when carrying into engineering truck Situation and be opened accidentally.
Above-mentioned change of current valve tester can be the equal pressure tester of existing converter valve, can increase a kind of converter valve inside it The trigger test device of thyristor cell and a kind of converter valve thyristor level damping circuit parameter test device, to realize its triggering Test, the function of pressing compensating test, damping parameter measurement.
Preferably, it is while realizes triggering test, pressing compensating test, damping parameter measurement, can also takes following scheme Implement: this programme is achieved in that the functional block diagram of tester as shown in figure 4, including 49V DC source, power frequency high voltage source, adjusting Frequency low pressure source, signal acquisition circuit, man-machine interface, switching group, display and control unit and electro-optic conversion primary clustering.Wherein signal acquisition Circuit is made of benchmark partial pressure, deviation sampling, voltage sampling, current sampling and analog-to-digital conversion, is connected to display and control unit.People Machine interface portion is made of LCD, key group, indicator light and floor push, is directly connected to display and control unit.
Further, 49V DC power supply is directly output to terminal accessory power supply, constitutes auxiliary power supply with terminal common end and returns Road powers to test object.
Further, power frequency high voltage source automatically switches to terminal height according to test demand by switching group with frequency conversion low pressure source In pressure side and terminal common end, excitation is provided to test object, while exporting high pressure, lights warning lamp.
Further, frequency conversion low pressure source can also be disconnected or be accessed from BNC connector " frequency conversion output " by switching group.Base Quasi- partial pressure takes voltage from BNC connector " frequency conversion output ", after carrying out 200:1 partial pressure, with from in BNC connector " compensation input " Signal by deviation sampling carry out asking poor, the error signal amplified, into analog-to-digital conversion.
Further, voltage sampling is sampled from terminal high-voltage end and terminal common end both ends, is entered after signal condition Analog-to-digital conversion.
Further, current sampling is sampled from the both ends Rs being connected on terminal common end, and mould is entered after signal condition Number conversion.The output result of analog-to-digital conversion enters display and control unit.
Further, zero passage detection is directly entered display and control unit from the number of winning the confidence on power frequency high voltage source after comparator.
Further, display and control unit controls electro-optic conversion exports coding message to GU optical fiber to VBE fiber port.
Further, display and control unit also control switch group, realizes the selection of driving source.
In order to illustrate technical solution described in this programme, the following is a description of specific embodiments.
Fig. 5 shows local triggering test schematic diagram provided in an embodiment of the present invention, illustrate only for ease of description with Relevant part of the embodiment of the present invention before test process is such that test, will assist source terminal to be connected to the confession of trigger board Electric port, high-voltage end are connected to thyristor anode, and common end is connected to thyristor cathode, and GU optical fiber is connected to the triggering of trigger board Port.When test, floor push is stepped on, tester exports the excitation of 250V/5A, with preassigned Trigger Angle from GU optical fiber Triggering command is issued, turn on thyristors is made.Zero cross detection circuit is exactly for Trigger Angle reference.It measures circuit and detects thyristor Both end voltage and circulating current judge the conduction status of thyristor, generate test report.
Fig. 6 shows backstage provided in an embodiment of the present invention triggering test schematic diagram, illustrate only for ease of description with Relevant part of the embodiment of the present invention before test process is such that test, will assist source terminal to be connected to the confession of trigger board Electric port, high-voltage end are connected to thyristor anode, and common end is connected to thyristor cathode, and VBE optical fiber is connected to background system end Mouthful.Floor push is stepped on when test, tester exports the excitation of 250V/5A, and VBE optical fiber proposes to trigger to converter valve background system Request, then turn-on command is issued by background system, make turn on thyristors.
Fig. 7 shows damping parameter provided in an embodiment of the present invention test schematic diagram, illustrate only for ease of description with The relevant part of the embodiment of the present invention, test process are such that tester first passes through switching group and exports frequency conversion low pressure source Onto HV Terminal and public terminal.Damping parameter can be analyzed to direct-axis component and quadrature axis component, need before measurement is formal Exclude the influence of other direct current branch.Tester is added in thyristor both ends using the continuous current excitation of 0Hz, detects the end electricity of tester Pressure and output electric current, can be obtained the impedance magnitude of direct current branch.Similarly, tester applies ac-excited at thyristor both ends, And the shunt influence of direct current branch is deducted by software, voltage magnitude, current amplitude, voltage and current phase angle is detected, can obtain Obtain the size of quadrature axis component and direct-axis component.Optimally, tester uses ac-excited frequency for 2.7KHz, amplitude 80Vpp, At this point, substantially 45 degree of the impedance angle of damping circuit.
Fig. 8 shows pressure compensating test test schematic diagram provided in an embodiment of the present invention, only shows for ease of description Part related to the embodiment of the present invention, before test process is such that test, by the BNC out splice going splice on tester Thyristor both ends are connected to, and the output measuring point on compensating plate will be pressed to return to BNC input adapter by shielding line.When test, Frequency conversion low pressure source is switched on BNC out splice going splice by tester by switching group first, then tester output low frequency calibration letter Number, user manually adjusts the knob on panel, so that device indicating value is returned 0, and manual switching, to high frequency calibration signal, adjustment partial pressure is mended The potentiometer on plate is repaid, device indicating value is made to return 0 again, repeats above-mentioned low frequency, high frequency calibration process, until filling under all situations The indicating value set is all close to 0.Optimally, low frequency uses 100Hz, 80Vpp, and high frequency uses 10KHz, 80Vpp.
Fig. 9 shows the structure and assembling schematic diagram of the embodiment of the present invention, complete machine using all-metal cabinet by front panel 1A, The components such as front sheet frame 2A, lower cover plate 5A, right side plate 8A, backplate 9A, back side sheet frame, upper cover plate 10A, left plate 11A are constituted. 3A containing mainboard, radiator 4A, fan 6A, Switching Power Supply 7A, power resistor 12A, transformer 13A, fiber optic adapter inside device The components such as 14A.Wherein, front panel 1A is integrated with the components such as operation interface, LCD, indicator light, connecting terminal, and backplate 9A is main As power input.Radiator 4A and fan 6A inside device are that the power supply module and power amplifier components on mainboard 3A radiate.
Technical solution of the present invention is not restricted in the range of embodiment of the present invention.The not detailed description of the present invention Technology contents be well-known technique.

Claims (5)

1. a kind of portable field change of current valve tester includes change of current valve tester (10), it is characterised in that: the change of current Valve tester (10) has tester bottom plate (1), and the tester bottom plate (1) is rectangle, in the two sides of tester bottom plate (1) A rectangle sliding sleeve (2) is respectively provided at position, the rectangle sliding sleeve (2) is arranged along the length direction of tester bottom plate (1), each square Shape sliding sleeve (2) is connect with tester bottom plate (1) by articulated shaft (3), is designed with torsional spring (4) on each articulated shaft (3), torsional spring (4) Its corresponding rectangle sliding sleeve (2) is allowed to have the tendency that being turned out always, being equipped in each rectangle sliding sleeve (2) upper in it can glide The top of dynamic rectangle slide plate (5), the rectangle slide plate (5) is equipped with locating piece (6), and locating piece (6) can drop down onto rectangle sliding sleeve (2) top is all provided on the outside of rectangle slide plate (5) bottom there are two wheel shaft (7), is equipped with movable pulley on each wheel shaft (7) (8), there are two being all provided on the outside of the rectangle sliding sleeve (2) bar shaped sliding slot (9), the location of described bar shaped sliding slot (9) and wheel Axis (7) is corresponding, is equipped with rectangular frame (11) in the top of tester bottom plate (1), the width direction of the rectangular frame (11) It is connected with the width direction of tester bottom plate (1) by V-type bracket (12), when each rectangle sliding sleeve (2) is perpendicular to tester bottom When plate (1), the top of the internal rectangle slide plate (5) of rectangle sliding sleeve (2) can be in contact with the bottom end of rectangular frame (11), described The periphery of rectangular frame (11) is equipped with test connecting line winding groove (13).
2. a kind of portable field change of current valve tester according to claim 1, it is characterised in that: tester bottom plate (1) telescopic rod (201) are installed on, telescopic rod (201) lower end is connect with tester bottom plate (1), and the installation of telescopic rod (201) upper end is distant It controls holder (202), remote control camera (203) and remote control illuminating lamp (204) is installed in remote control holder (202).
3. a kind of portable field change of current valve tester according to claim 1, it is characterised in that: the telescopic rod It (201) is hollow structure, the power supply line of remote control camera (203) and remote control illuminating lamp (204) is helical spring cable (205), helical spring cable (205) is passed through from telescopic rod (201) inside and is connect afterwards with change of current valve tester (10).
4. a kind of portable field change of current valve tester according to claim 1, it is characterised in that: described two rectangles The inside of sliding sleeve (2) is connect with one end of a drawstring (14) respectively, and the bottom of rectangular frame (11) width direction is equipped with pulley (15), two drawstrings (14) pass through from pulley (15), and are connected on same positioning ring (16).
5. a kind of portable field change of current valve tester according to claim 1, it is characterised in that: the V-type bracket (12) location hook (17) are equipped between, positioning ring (16) can drive drawstring (14) to be suspended on location hook (17).
CN201811185996.2A 2018-10-11 2018-10-11 Portable on-site converter valve tester Active CN108957051B (en)

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Application Number Priority Date Filing Date Title
CN201811185996.2A CN108957051B (en) 2018-10-11 2018-10-11 Portable on-site converter valve tester

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Application Number Priority Date Filing Date Title
CN201811185996.2A CN108957051B (en) 2018-10-11 2018-10-11 Portable on-site converter valve tester

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CN108957051B CN108957051B (en) 2024-09-10

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Cited By (2)

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CN110430726A (en) * 2019-07-25 2019-11-08 广州市妙伊莲科技有限公司 A kind of cell phone software test macro of the high reliablity with heat sinking function
CN114089184A (en) * 2021-12-02 2022-02-25 国网湖北省电力有限公司直流运检公司 Reliability detection method suitable for flexible direct-current transmission converter valve

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