CN112129507A - Automatic testing device and testing method for mechanical characteristics and loop resistance of switch equipment - Google Patents
Automatic testing device and testing method for mechanical characteristics and loop resistance of switch equipment Download PDFInfo
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- CN112129507A CN112129507A CN202011006552.5A CN202011006552A CN112129507A CN 112129507 A CN112129507 A CN 112129507A CN 202011006552 A CN202011006552 A CN 202011006552A CN 112129507 A CN112129507 A CN 112129507A
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- resistance
- mechanical characteristics
- loop resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
Abstract
The invention discloses an automatic testing device for mechanical characteristics and loop resistance of large-scale switchgear, which mainly comprises a large-scale switchgear sample, a skid, a testing station module, a secondary connector, an automatic testing wiring tool, a pneumatic control system and a testing control system for mechanical characteristics and loop resistance. The automatic test device and the test method for the mechanical characteristics and the loop resistance of the switch equipment can conveniently realize the automatic test for the mechanical characteristics and the loop resistance of large-scale switch equipment, can lead the mechanical characteristics and the three-phase loop resistance to be in place at one time through automatic test wiring, and respectively and independently perform the test according to requirements, thereby overcoming the defects of the traditional test equipment, effectively improving the test operation efficiency of the mechanical characteristics and the loop resistance of large-scale switch equipment products, and ensuring the personal safety during test operation. In addition, the invention can be widely applied to other wiring test projects needing ascending, and has strong practicability.
Description
Technical Field
The invention relates to the field of high-voltage electrical test devices, in particular to an automatic test device and a test method for mechanical characteristics and loop resistance of switch equipment.
Background
With the social development, the power consumption of industry and residents rises, the requirements of people on the dependence and reliability of power supply are higher and higher, and the power load is deeper and deeper. Transmission class switchgear has also been rapidly developed as the most important control and protection equipment in power transmission.
The power transmission grade switch equipment has heavier weight, larger volume and height due to high voltage grade, and meanwhile, because the equipment has poor stability and is difficult to transport, when the equipment is tested for mechanical characteristics and loop resistance, a test sample generally keeps an assembly position still, and corresponding test equipment is moved to the position near the test sample for testing before the test. The current leading practice is: the test article still stays at the position after being assembled and debugged at the fixed operation position, a tester adopts a climbing ladder or a climbing vehicle to perform climbing manual wiring, the wiring is performed according to the requirements of mechanical characteristics and loop resistance respectively, the tests of the mechanical characteristics and the loop resistance are performed respectively after the wiring is completed, and the wiring is removed manually after the tests are completed. In the process, not only the loop resistors need to be respectively connected with three phases for testing, but also a climbing ladder or a climbing vehicle needs to be equipped for climbing operation for the connection before the test and the disconnection after the test.
As can be seen from the above, at least four ascending operations are required to complete the mechanical characteristics and the circuit resistance test of one switchgear. Meanwhile, because the test needs frequent ascending operation, at least two testers are needed to ensure the test safety, 1 person carries out ascending operation for connecting and disconnecting, and the other 1 person carries out monitoring to ensure the operation safety. Therefore, the conventional mechanical characteristics and circuit resistance test operation mode of the switchgear have the following disadvantages: firstly, the mechanical characteristics of the switch equipment and the circuit resistance test need to be subjected to repeated climbing operation for connecting and disconnecting, and potential safety hazards of personnel climbing operation exist; secondly, the workload of connecting and disconnecting is large, the phenomenon of manual wiring and omission exists, when the constant current source is supplied, the connecting cable is large in specification and high in quality, good contact resistance of the connecting cable needs to be ensured, time and labor are wasted, and the working efficiency is low.
Disclosure of Invention
The invention aims to provide an automatic test device and a test method for mechanical characteristics and loop resistance of large-scale switchgear.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an automatic testing device for mechanical characteristics and loop resistance of switch equipment, which mainly comprises the following parts:
a test station module;
the test piece conveying mechanism is provided with a switch equipment test piece and is used for conveying the switch equipment test piece to the test station module;
the secondary connector is mounted on the test station module and used for realizing automatic opening and closing operation of the switch equipment test product;
the automatic test wiring tool comprises an automatic adjusting mechanism, an upper low-resistance connector assembly and a lower low-resistance connector assembly, wherein the upper low-resistance connector assembly and the lower low-resistance connector assembly are mounted on the automatic adjusting mechanism, and the upper low-resistance connector assembly can be electrically connected with or disconnected from an upper flange of each phase of pole in a switch equipment test product under the adjusting action of the automatic adjusting mechanism; the lower low-resistance connector assembly can be electrically connected or disconnected with the lower flange of each phase pole in the switch equipment test sample under the adjusting action of the automatic adjusting mechanism;
the test control system is used for controlling the automatic opening and closing operation of the switch equipment test product according to the requirements of a switch equipment mechanical characteristic test and/or a switch equipment loop resistance test; and can collect experimental data in the process of a mechanical characteristic test and/or a loop resistance test of the switch device.
Optionally, the sample conveying mechanism is a skid, and an anti-overturning assembly is installed between the skid and the test station module.
Optionally, the anti-tip over assembly comprises:
the anti-tilting pressure plates are arranged on two sides of the test station module along the length direction and coat two sides of the upper edge of the skid along the sliding direction;
the guide ball is arranged on the inner side of the anti-tilting pressure plate, one end of the guide ball is connected with the anti-tilting pressure plate through a ball top spring, and the other end of the guide ball is used for abutting against the skid;
and the ball baffle is arranged on the inner side of the guide ball and used for supporting the guide ball.
Optionally, the secondary connector includes:
the static contact insulation base plate is arranged on the test sample conveying mechanism; the top end of the static contact insulating base plate is provided with a plurality of static contacts, the bottom end of the static contact insulating base plate is provided with a plurality of static wiring terminals corresponding to the static contacts, and the static contacts are in equipotential connection with the static wiring terminals at the corresponding positions;
the moving contact insulating base plate is positioned above the static contact insulating base plate; the bottom end of the moving contact insulation seat plate is provided with a plurality of moving contacts, the top end of the moving contact insulation seat plate is provided with a plurality of moving wiring terminals corresponding to the moving contacts, and the moving contacts are in equipotential connection with the moving wiring terminals at corresponding positions;
the pin holes of the secondary aviation socket are electrically connected with the static wiring terminals, and the electric contacts of the secondary aviation socket are electrically connected with the operating mechanism of the switch equipment test piece;
the base plate lifting mechanism is used for driving the moving contact insulating base plate to lift, and the electric contact of the moving connecting terminal is electrically connected with the lifting mechanism; the base plate lifting mechanism can drive the moving contact and the fixed contact to be automatically closed or separated after being started, and then the automatic opening and closing operation of the switch device test article is achieved.
Optionally, the moving contact is hinged to the moving contact insulating seat plate through a hinge; and a moving contact pressure spring is connected between the hinge and the moving contact insulating seat plate and used for providing an electric contact force when the moving contact and the fixed contact are closed.
Optionally, the secondary connector further comprises a contact protection cover, the contact protection cover is installed on the test sample conveying mechanism, and the secondary aviation socket is installed on the contact protection cover.
Optionally, the automatic adjustment mechanism includes a tool support, an upper adjustment assembly and a lower adjustment assembly are respectively disposed at the top and the middle of the tool support, and the upper low-resistance connector assembly and the lower low-resistance connector assembly are respectively mounted on the upper adjustment assembly and the lower adjustment assembly.
Optionally, the upper low-resistance connector assembly and/or the lower low-resistance connector assembly includes:
the low-resistance connector is arranged on the corresponding adjusting component and is used for being in contact connection with the flange at the corresponding position under the adjusting action of the adjusting component;
and the end wire harness is connected to the wiring end of the low-resistance connector and at least comprises a switching value signal acquisition line during a mechanical characteristic test, a current line and a voltage acquisition line during a loop resistance test.
The invention also provides an automatic testing method for the mechanical characteristics of the switch equipment based on the automatic testing device, which comprises the following steps: the switch equipment test sample comprises multiphase poles, the multiphase poles are arranged on a spring operating mechanism, the spring operating mechanism is used for providing power for switching on and/or switching off the switch for the test sample, and an upper flange and a lower flange are arranged on each phase pole;
in the mechanical characteristic test process, the following data of a test article in the opening and closing process are collected through the test control system: the switching value between the upper flange and the lower flange of each phase pole of the sample and the displacement data of a transmission component in the spring operating mechanism.
The invention also provides an automatic test method for the loop resistance of the switch equipment based on the automatic test device, which comprises the following steps: the switch equipment test sample comprises multiphase poles, the multiphase poles are arranged on a spring operating mechanism, the spring operating mechanism is used for providing power for switching on and/or switching off the switch for the test sample, and an upper flange and a lower flange are arranged on each phase pole;
in the loop resistance test process, voltage data of the test sample in the closing state and when a constant current source is input between the upper flange and the lower flange of each phase pole is collected through the test control system.
Compared with the prior art, the invention has the following technical effects:
the automatic test device and the test method for the mechanical characteristics and the loop resistance of the switch equipment can conveniently realize the automatic test for the mechanical characteristics and the loop resistance of large-scale switch equipment, can lead the mechanical characteristics and the three-phase loop resistance to be in place at one time through automatic test wiring, and respectively and independently perform the test according to requirements, thereby overcoming the defects of the traditional test equipment, effectively improving the test operation efficiency of the mechanical characteristics and the loop resistance of large-scale switch equipment products, and ensuring the personal safety during test operation.
In addition, the invention can also expand other high-current and low-voltage wiring test items needing ascending for large-scale electrical equipment, and has strong practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an automatic test apparatus according to the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a partially enlarged schematic view of the overturn preventing structure at A in FIG. 2;
FIG. 4 is an enlarged partial schematic view of the secondary connector of FIG. 1 at B;
FIG. 5 is a schematic diagram of the mating of the upper and lower low resistance connector assemblies with the upper flange of the automatic test apparatus of the present invention;
FIG. 6 is a schematic diagram of the mating of a lower low resistance connector assembly with a lower flange in an automatic test apparatus of the present invention;
FIG. 7 is a schematic structural diagram of a spring finger in the first embodiment;
FIG. 8 is a side view of the spring finger of FIG. 7;
wherein the reference numerals are: the device comprises a switchgear sample 1, an upper flange 1-1, a lower flange 1-2, a spring operating mechanism 1-3, a skid 2, a test station module 3, an anti-tilting pressure plate 3-1, a guide ball 3-2, a ball top spring 3-3, a ball baffle 3-4, a secondary connector 4, a cylinder support 4-1, a cylinder 4-2, a contact protective cover 4-3, a secondary aviation socket 4-4, a movable connecting terminal 4-5, a connecting wire 4-6, a movable contact insulating base plate 4-7, a movable contact pressure spring 4-8, a movable contact 4-9, a hinge 4-10, a fixed contact 4-11, a fixed contact insulating base plate 4-12, a fixed connecting terminal 4-13, an automatic test wiring tool 5, a tool support 5-1, and an upper low-resistance connector component 5-2, 5-2-1 parts of an upper cylinder, 5-2-2 parts of a piston, 5-2-3 parts of a connecting plate, 5-2-4 parts of an upper low-resistance connector, 5-2-5 parts of a spring contact finger, 5-2-6 parts of a wiring terminal, 5-2-7 parts of an upper end wiring harness, 5-3 parts of a lower low-resistance connector assembly, 5-3-1 parts of a lower cylinder, 5-3-2 parts of a piston, 5-3-3 parts of a connecting plate, 5-3-4 parts of a lower low-resistance connector, 5-3-5 parts of a spring contact finger, 5-3-6 parts of a wiring terminal, 5-3-7 parts of a lower end wiring harness, a pneumatic control system 6 and.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an automatic test device and a test method for mechanical characteristics and loop resistance of large-scale switchgear.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The first embodiment is as follows:
as shown in fig. 1 to 6, the present embodiment provides an automatic testing apparatus for mechanical characteristics and loop resistance of large-scale switchgear, which mainly comprises a large-scale switchgear sample 1, a sled 2, a testing station module 3, a secondary connector 4, an automatic testing wiring tool 5, a pneumatic control system 6, and a testing control system 7 for mechanical characteristics and loop resistance. The testing station module 3 is used for being installed on the ground, the switchgear test product 1 can be installed on the skid 2 through the bottom stud, the switchgear test product 1 is conveyed to the testing station module 3 from other assembling station modules through the skid 2, after the switchgear test product is conveyed in place, the secondary control part of the switchgear test product 1 is effectively and electrically connected with the testing control system 7 through the secondary connector 4, and the automatic opening and closing operation of the switchgear test product 1 is achieved through the matching of the testing control system 7 with mechanical characteristics and loop resistance testing requirements. The automatic wiring of the upper flange 1-1 and the upper end wiring harness 5-2-7, the lower flange 1-2 and the lower end wiring harness 5-3-7 of the switch equipment sample 1 is realized through the automatic test wiring tool 5, and the automatic test device has the independent test functions of mechanical characteristics and loop resistance. Preferably, the switch equipment sample 1 is set to be a three-phase pole structure.
In the present embodiment, as shown in fig. 3, in actual operation, the height of the switchgear sample 1 and the height of the slider 2 are approximately 5000mm, and the width of the bottom of the slider 2 is approximately 1000mm, which is inferior in stability. Therefore, in the embodiment, the overturn prevention structure is arranged between the skid 2 and the test station module 3, and the test station module 3 is provided with the plurality of right-angle overturn prevention pressing plates 3-1 along both sides of the length direction, so that the overturn of the switch equipment test product 1 and the skid 2 can be effectively prevented. The inner side of the anti-tilting pressure plate 3-1 is provided with a guide ball 3-2, a ball top spring 3-3 and a ball baffle 3-4, when the switch equipment test product 1 and the skid 2 are conveyed into (or out of) the test station module 3, the effective guide-in/guide-out of the skid 2 is realized through the guide ball 3-2, and meanwhile, the transmission resistance is reduced. The ball head spring 3-3 mainly provides an effective rolling contact force of the guide ball 3-2, and the ball retainer 3-4 functions to support the guide ball 3-2.
In this embodiment, as shown in fig. 4, a cylinder support 4-1 is disposed at a moving end of the secondary connector 4, a stationary end of the cylinder 4-2 is effectively fixed to the cylinder support 4-1, a moving contact insulating base plate 4-7 is connected to the moving end of the cylinder 4-2, a plurality of moving contacts 4-9 are disposed on the moving contact insulating base plate 4-7, and each moving contact 4-9 is effectively connected to the moving contact insulating base plate 4-7 through a hinge 4-10 and a moving contact compression spring 4-8. On the other side of the moving contact insulation seat plate 4-7, a moving connecting terminal 4-5 is arranged at the corresponding position of each moving contact 4-9, and the moving connecting terminals and the moving contact are in equipotential connection. Meanwhile, a static contact insulation base plate 4-12 is arranged on the skid 2, a plurality of static contacts 4-11 are arranged on the upper side of the static contact insulation base plate 4-12, a static connecting terminal 4-13 is arranged at the corresponding position of each static contact 4-11 on the lower side of the static contact insulation base plate 4-12, and the static connecting terminals and the static contacts are connected in an equipotential manner.
As shown in fig. 4, in this embodiment, a contact protection cover 4-3 is disposed outside the moving and static contacts, the contact protection cover 4-3 is fixed on the slider 2 and provided with a secondary aviation socket 4-4, and a plurality of pin holes on the secondary aviation socket 4-4 are electrically connected to a plurality of static connection terminals 4-13 through connection wires 4-6, respectively. Meanwhile, the output of an electric contact of the movable wiring terminal 4-5 is connected with the pneumatic control system 6, each electric contact of the secondary aviation socket 4-4 is effectively connected with a secondary aviation plug of the operating mechanism of the switch device test article 1, the pneumatic control system 6 can control the secondary aviation socket to drive the air cylinder 4-2 to act, the movable contact 4-9 and the fixed contact 4-11 of the secondary connector are automatically closed or separated, and the pneumatic control system 6 operates the secondary aviation plug to realize the automatic opening and closing of the switch device test article 1. The moving contact pressure spring 4-8 plays a role in providing an electric contact force when the moving contact 4-9 and the static contact 4-11 are closed.
In this embodiment, the structure and the working principle of the mechanical characteristic automatic test wiring are as follows:
as shown in fig. 5 to 6, when the testing device is used for testing the mechanical characteristics of the switchgear, the data required to collect the switchgear sample 1 in the opening and closing process are respectively: the switching value between an upper flange 1-1 and a lower flange 1-2 of a three-phase pole of a switch device sample 1 and the displacement data of a transmission component corresponding to a spring operating mechanism 1-3. The spring operating mechanism 1-3 is an existing high-voltage circuit breaker operating mechanism, the specific structure and the working principle are well known in the art, and the spring operating mechanism is mainly used for providing all power of the switch-on and switch-off of the switch device sample 1 in the embodiment, and relevant important data of the mechanical characteristics of the switch device sample 1 can be obtained by measuring the position and the speed of a connecting rod of the switch device sample 1, such as: closing (opening) brake sequence, three-phase different phases, closing (opening) brake time, bounce times, bounce amplitude, stroke, opening distance, overtravel, rigid closing (opening) speed, maximum speed, average speed, time stroke speed dynamic curve and the like; the displacement sensor measures instantaneous displacement, and the test control system 7 can respectively measure the above test parameters by combining the switching value signals of the upper end wire harness 5-2-7 and/or the lower end wire harness 5-3-7. Therefore, the mechanical characteristic test must have the opening and closing operations of the switchgear sample 1 and all relevant data acquisition functions. The data acquisition functions described above can be implemented using existing techniques.
The switching-on and switching-off operation process of the switch device sample 1 is as follows: the switchgear sample 1 is installed on the skid 2, conveyed to the test station module 3, and after being conveyed in place, the secondary control part of the switchgear sample 1 is effectively connected with the test control system 7 through the secondary connector 4, and the automatic opening and closing operation of the switchgear sample 1 is realized through the test control system 7 in cooperation with the mechanical characteristic test. And a displacement sensor is arranged on a transmission component corresponding to the spring operating mechanism 1-3, and can acquire displacement data of a relevant part in real time and then upload the displacement data to a test control system 7 through a data line to finish the real-time acquisition of the displacement data. FIG. 4 shows the matching details of the upper low-resistance connector component 5-2 and the upper flange 1-1, the upper low-resistance connector component 5-2 is installed at the position corresponding to the upper flange 1-1 of the automatic wiring test tool 5 and the switch device test article 1, the upper cylinder 5-2-1 is installed on the tool support 5-1, the upper low-resistance connector 5-2-4 is connected with the piston 5-2-2 on the upper cylinder 5-2-1 through the connecting plate 5-2-3, the mechanical characteristic switching value signal acquisition line 5-2-7 on the test control system 7 is connected with the terminal 5-2-6 of the upper low-resistance connector 5-2, the piston 5-2-2 on the upper cylinder 5-2-1 is operated to slide downwards through the pneumatic control system 6 before the mechanical characteristic test, and simultaneously, the connecting plate 5-2-3 and the upper low-resistance connector component 5-2 are driven to slide downwards, so that the upper low-resistance connector 5-2-4 is effectively connected with the upper flange 1-1 of the test article 1, and in order to improve the effective connection between the upper low-resistance connector 5-2-4 and the upper flange 1-1 and reduce the contact resistance, a high-conductivity spring contact finger 5-2-5 flexible contact mode is adopted between the upper low-resistance connector 5-2-4 and the upper flange 1-1. Similarly, fig. 5 shows the details of the matching of the lower low-resistance connector component 5-3 and the lower flange 1-2, so that the lower low-resistance connector 5-3-4 is effectively connected with the lower flange 1-2 of the switch device test article 1, and the switching value signal acquisition to the test control system 7 is completed. In this case, the test control system 7 has a function of testing the mechanical characteristics of the switchgear sample 1 and a function of acquiring test data.
In this embodiment, during a resistance test of a switching device loop, voltage data of a switching device sample 1 when a constant current source of, for example, 100A is input between an upper flange 1-1 and a lower flange 1-2 of a three-phase pole under a switching-on condition needs to be acquired. Therefore, the circuit resistance test must have two factors of switching-on operation of the switch device sample 1, input of a constant current source between the upper flange 1-1 and the lower flange 1-2, and a voltage data acquisition function between the upper flange 1-1 and the lower flange 1-2.
The structure and the working principle of the automatic mechanical characteristic test wiring can be known as follows: the switchgear sample 1 has a function of performing a closing operation on the test control system 7. The automatic wiring of an upper flange 1-1, an upper end wire harness 5-2-7, a lower flange 1-2 and a lower end wire harness 5-3-7 of a switch device test article 1 is realized through an automatic test wiring tool 5, the upper end wire harness 5-2-7 and the lower end wire harness 5-3-7 are both composed of a switching value signal acquisition line during a mechanical characteristic test and a current line and a voltage acquisition line during a loop resistance test, namely, the constant current source is input between the upper flange 1-1 and the lower flange 1-2, and meanwhile, voltage data between the upper flange 1-1 and the lower flange 1-2 is acquired to a test control system 7. At this time, the test control system 7 has a function of simultaneously performing a loop resistance test on the three-phase pole of the switchgear sample 1 and a function of acquiring test data.
In this embodiment, FIGS. 7-8 show details of the engagement of the spring fingers 5-2-5 or spring fingers 5-3-5 with the upper and lower flanges. The spring contact fingers 5-2(3) -5 are also called inclined coil springs, each coil of the spring contact fingers 5-2(3) -5 can independently compensate contact and surface change, wide tolerance among accessories is allowed, the external flexible wiring effect of a loop resistance test is achieved, the conductivity can be increased through multi-point contact, almost lossless contact is achieved, and the service life is long. Wherein, the reference numeral of the above-mentioned "5-2 (3) -5" means that the spring contact finger 5-2-5 or the spring contact finger 5-3-5 includes the reference numerals in the figures.
Therefore, the automatic testing device and the testing method for the mechanical characteristics and the loop resistance of the switch equipment, disclosed by the invention, have the advantages that the tests are respectively carried out by automatically testing the wiring, once wiring the mechanical characteristics and the three-phase loop resistance in place, so that the defects of the traditional testing method are overcome, the testing operation efficiency is effectively improved, and the testing operation safety is ensured.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An automatic testing device for mechanical characteristics and loop resistance of switchgear, comprising:
a test station module;
the test piece conveying mechanism is provided with a switch equipment test piece and is used for conveying the switch equipment test piece to the test station module;
the secondary connector is mounted on the test station module and used for realizing automatic opening and closing operation of the switch equipment test product;
the automatic test wiring tool comprises an automatic adjusting mechanism, an upper low-resistance connector assembly and a lower low-resistance connector assembly, wherein the upper low-resistance connector assembly and the lower low-resistance connector assembly are mounted on the automatic adjusting mechanism, and the upper low-resistance connector assembly can be electrically connected with or disconnected from an upper flange of each phase of pole in a switch equipment test product under the adjusting action of the automatic adjusting mechanism; the lower low-resistance connector assembly can be electrically connected or disconnected with the lower flange of each phase pole in the switch equipment test sample under the adjusting action of the automatic adjusting mechanism;
the test control system is used for controlling the automatic opening and closing operation of the switch equipment test product according to the requirements of a switch equipment mechanical characteristic test and/or a switch equipment loop resistance test; and can collect experimental data in the process of a mechanical characteristic test and/or a loop resistance test of the switch device.
2. The automatic testing device for mechanical characteristics and loop resistance of switchgear as claimed in claim 1, wherein the sample transfer mechanism is a skid, and an anti-tip-over assembly is installed between the skid and the test station module.
3. The automatic test device of the mechanical characteristics and the loop resistance of the switchgear apparatus according to claim 2, characterized in that said anti-overturning assembly comprises:
the anti-tilting pressure plates are arranged on two sides of the test station module along the length direction and coat two sides of the upper edge of the skid along the sliding direction;
the guide ball is arranged on the inner side of the anti-tilting pressure plate, one end of the guide ball is connected with the anti-tilting pressure plate through a ball top spring, and the other end of the guide ball is used for abutting against the skid;
and the ball baffle is arranged on the inner side of the guide ball and used for supporting the guide ball.
4. The automatic test device of mechanical characteristics and loop resistance of switchgear apparatus according to claim 1, wherein said secondary connector comprises:
the static contact insulation base plate is provided with a plurality of static contacts at the top end, a plurality of static wiring terminals corresponding to the static contacts at the bottom end, and the static contacts are connected with the static wiring terminals at the corresponding positions in an equipotential manner;
the moving contact insulating base plate is positioned above the static contact insulating base plate; the bottom end of the moving contact insulation seat plate is provided with a plurality of moving contacts, the top end of the moving contact insulation seat plate is provided with a plurality of moving wiring terminals corresponding to the moving contacts, and the moving contacts are in equipotential connection with the moving wiring terminals at corresponding positions;
the pin holes of the secondary aviation socket are electrically connected with the static wiring terminals, and the electric contacts of the secondary aviation socket are electrically connected with the operating mechanism of the switch equipment test piece;
the base plate lifting mechanism is used for driving the moving contact insulating base plate to lift, and the electric contact of the moving connecting terminal is electrically connected with the lifting mechanism; the base plate lifting mechanism can drive the moving contact and the fixed contact to be automatically closed or separated after being started, and then the automatic opening and closing operation of the switch device test article is achieved.
5. The automatic testing device for mechanical characteristics and loop resistance of switch equipment as claimed in claim 4, wherein said moving contact is hinged to said moving contact insulating base plate through a hinge; and a moving contact pressure spring is connected between the hinge and the moving contact insulating seat plate and used for providing an electric contact force when the moving contact and the fixed contact are closed.
6. The automatic testing device for mechanical characteristics and loop resistance of switching equipment according to claim 4, wherein the secondary connector further comprises a contact protection cover, the contact protection cover is mounted on the test article conveying mechanism, and the secondary aviation socket is mounted on the contact protection cover.
7. The automatic testing device for the mechanical characteristics and the loop resistance of the switch equipment according to claim 1, wherein the automatic adjusting mechanism comprises a tool support, an upper adjusting component and a lower adjusting component are respectively arranged at the top and the middle of the tool support, and the upper low-resistance connector component and the lower low-resistance connector component are respectively arranged on the upper adjusting component and the lower adjusting component.
8. The automatic test device of the mechanical characteristics and the loop resistance of the switchgear according to claim 7, characterized in that said upper low-resistance connector assembly and/or said lower low-resistance connector assembly comprises:
the low-resistance connector is arranged on the corresponding adjusting component and is used for being in contact connection with the flange at the corresponding position under the adjusting action of the adjusting component;
and the end wire harness is connected to the wiring end of the low-resistance connector and at least comprises a switching value signal acquisition line during a mechanical characteristic test, a current line and a voltage acquisition line during a loop resistance test.
9. An automatic testing method for mechanical characteristics of switching equipment based on the automatic testing device of any one of claims 1 to 8, characterized in that a switch equipment sample comprises a multi-phase pole, the multi-phase pole is mounted on a spring operating mechanism, the spring operating mechanism is used for providing power for switching on and/or switching off the switch equipment sample, and each phase pole is provided with an upper flange and a lower flange;
in the mechanical characteristic test process, the following data of a test article in the opening and closing process are collected through the test control system: the switching value between the upper flange and the lower flange of each phase pole of the sample and the displacement data of a transmission component in the spring operating mechanism.
10. An automatic testing method for the loop resistance of a switching device based on the automatic testing device of any one of claims 1 to 8 is characterized in that a switch device test sample comprises a multi-phase pole, the multi-phase pole is mounted on a spring operating mechanism, the spring operating mechanism is used for providing power for switching on and/or switching off the switch device test sample, and each phase pole is provided with an upper flange and a lower flange;
in the loop resistance test process, voltage data of the test sample in the closing state and when a constant current source is input between the upper flange and the lower flange of each phase pole is collected through the test control system.
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Application publication date: 20201225 |