CN108414796B - Portable universal adapter box for high-voltage test of transformer - Google Patents
Portable universal adapter box for high-voltage test of transformer Download PDFInfo
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- CN108414796B CN108414796B CN201810138432.7A CN201810138432A CN108414796B CN 108414796 B CN108414796 B CN 108414796B CN 201810138432 A CN201810138432 A CN 201810138432A CN 108414796 B CN108414796 B CN 108414796B
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- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 238000010998 test method Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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Abstract
The invention relates to a tool for optimizing routine electrical test procedures of transformer power failure, in particular to a portable universal adapter box for transformer high-voltage tests.
Description
Technical Field
The invention relates to a tool for optimizing routine electrical test procedures of transformer power failure, in particular to a portable universal adapter box for transformer high-voltage tests.
Background
The transformer is known as the "heart of the power system", and thus it is seen that it is the most widely used and most important device in the power system. In order to ensure safe and stable operation, the power equipment operation management unit can regularly perform power failure routine maintenance tests on the transformer according to relevant technical regulations. Moreover, after the transformer is tripped due to faults, the transformer can be put into operation again only after the transformer is subjected to diagnostic tests by electrical testers and various data indexes are normal.
Whether routine or diagnostic testing, personnel are required to perform several test items on the transformer, such as: the method comprises the following steps of winding resistance testing, insulation resistance measuring, insulation dielectric loss factor measuring, winding frequency response analysis, on-load tap-changer testing and the like. When carrying out these test items, need 1 ~ 2 testing personnel to dress the safety belt, climb to the transformer top, carry out the wiring. When the test is started, the wiring personnel need to climb down from the top of the transformer for safety reasons. Due to different test principles and methods, after each test is finished, the wiring personnel need to climb to the top of the transformer again to change wiring. The smooth completion of all transformer test projects requires that a wiring operator get on or off the equipment for more than ten times. If special conditions are met, wiring personnel need to climb up and down for multiple times to check test wiring, remove faults, interfere and the like. Therefore, the physical energy and energy of workers are greatly consumed, in addition, the transformer is usually higher, especially the transformer with the voltage grade of 110kV, 220kV and above, the multiple climbing increases unsafe factors of a working site, and accidents such as falling of the workers, high falling and the like are easily caused. In addition, the top end condition caused by the structure of the transformer is very complicated, for example, the top of some main transformers is of a pointed top type, and two feet of a wiring worker can only step on an inclined plane; and for example, a huge conservator is located right above some transformers, and a wiring person cannot stand up directly. In addition, various pipelines at the top end of the transformer are vertical and horizontal, so that the wiring personnel can work well. Wiring and wiring change at the top of the equipment are time-consuming and labor-consuming, and wiring personnel trip and bump frequently. In order to accelerate the progress of the test, a person who climbs the wire or a trolley is used to perform the wire connection and change the wire connection.
In conclusion, the links of wiring and changing wiring of various tests of the transformer are time-consuming, labor-consuming, potential safety hazards exist, and efficiency is low.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the portable universal adapter box for the high-voltage test of the transformer, and the universal adapter box is applied to reduce the steps of climbing up and down stairs of a tester and reversing the wiring of the test, shorten the test time and improve the test efficiency.
The invention adopts the specific technical scheme that:
the utility model provides a general switching box of portable transformer high-voltage test, is including setting up equipment joining region, change over switch and the instrument joining region in the switching box, equipment joining region in be provided with the equipment connection end, the instrument joining region be provided with the instrument connection end, equipment connection end and instrument connection end form the electricity with the help of change over switch and connect its characterized in that: the equipment connecting end comprises a high-voltage equipment interface group, a medium-voltage equipment interface group and a low-voltage equipment interface group, and the equipment connecting end comprises a high-voltage instrument interface group, a medium-voltage instrument interface group and a low-voltage instrument interface group;
the high-voltage equipment interface group comprises an interface A1, an interface B1, an interface C1 and an interface O1;
the medium voltage equipment interface group comprises an interface A2, an interface B2, an interface C2 and an interface O2;
the low-voltage equipment interface group comprises an interface A3, an interface B3 and an interface C3;
the high-voltage instrument interface group comprises an interface a1, an interface b1, an interface c1 and an interface o 1;
the medium voltage instrument interface group comprises an interface a2, an interface b2, an interface c2 and an interface o 2;
the low-voltage instrument interface group comprises an interface a3, an interface b3 and an interface c 3;
the change-over switch is provided with a high-voltage change-over contact group, a medium-voltage change-over contact group and a low-voltage change-over contact group;
the high-voltage switching contact group is provided with four groups, each interface in the high-voltage equipment interface group is respectively connected with the input end of the high-voltage switching contact group, each interface in the high-voltage instrument interface group is respectively connected with the output end of the high-voltage switching contact group, the output end of the high-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the third contact are connected with the interfaces of the high-voltage instrument interface group, and the fifth contact and the sixth contact are grounded;
the medium-voltage switching contact group is provided with four groups, each interface in the medium-voltage equipment interface group is respectively connected with the input end of the medium-voltage switching contact group, each interface in the medium-voltage instrument interface group is respectively connected with the output end of the medium-voltage switching contact group, the output end of the medium-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the contact are connected with the interfaces of the medium-voltage instrument interface group, and the third contact, the fourth contact and the six contacts are grounded;
the low-voltage switching contact group is provided with three groups, each interface in the low-voltage equipment interface group is respectively connected with the input end of the low-voltage switching contact group, each interface in the low-voltage instrument interface group is respectively connected with the output end of the low-voltage switching contact group, the output end of the low-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the contact are connected with the interfaces of the low-voltage instrument interface group, and the third contact, the fourth contact and the fifth contact are grounded.
The adapter box is provided with a ground wire connecting end which is a quick connection assembly, the quick connection assembly comprises a quick connection socket and a quick connection plug inserted in the quick connection socket, the quick connection socket comprises a socket shell, a manual locking ring, a driving gear set, a connecting device and a wiring terminal arranged on the outer side of the socket shell, the wiring terminal is electrically connected with the connecting device by virtue of a conductive wire, the manual locking ring is in driving connection with the connecting device by virtue of the driving gear set, the connecting device comprises a connecting cylinder and a connecting seat which are in driving connection with the manual locking ring by virtue of the gear set, a connecting wire is arranged between the connecting cylinder and the connecting seat, the connecting seat is provided with a containing hole, one end of the connecting wire is connected in the containing hole by virtue of a spring, the other end of the connecting wire is fixed on the inner wall of the connecting cylinder, the connecting wire has the degree of freedom of expansion in the containing hole by virtue of the rotation of the, the quick-connection plug compress tightly and fix on the connecting seat with the help of connecting wire, the quick-connection plug be provided with a set of annular locking groove along axis direction equidistant, the hole quantity of accomodating equal and locking groove quantity and adjacent the interval of accomodating between the hole equal with the interval between the adjacent locking groove.
The driving gear set comprises a driving wheel, a driven wheel, a driving intermediate wheel, a driven intermediate wheel and a clutch wheel, wherein the driving wheel and the driven wheel are all internal gears, the manual locking ring is fixed with the driving wheel through a connecting rod, the connecting cylinder is fixed with the driven wheel, the connecting seat is of an arc-shaped structure, a sliding seat is arranged on the inner arc surface of the connecting seat, the clutch wheel is arranged on the sliding seat, the driving wheel, the driven wheel and the clutch wheel are coaxially arranged, the driving intermediate wheel and the driven intermediate wheel are installed through shaft rods arranged on the connecting seat, the driving wheel is in transmission connection with the clutch wheel through the driving intermediate wheel, and the driven wheel is in transmission connection with the clutch wheel through the driven intermediate wheel.
The sliding seat is fixed by means of a sliding groove arranged on the cambered surface on the inner side of the connecting seat, and a spring is further arranged in the sliding groove.
The connecting cylinder is characterized in that a conductive rod is arranged on the inner side wall of the connecting cylinder, the connecting terminal is electrically connected with the connecting seat through a conductive wire, and a spring made of metal is connected between the conductive rod and the conductive wire.
The invention has the beneficial effects that:
according to the invention, the transformer to be tested is connected with the test instrument through the adapter box, when the connection relation between the test instrument and the transformer needs to be changed, the connection mode can be switched by directly rotating the change-over switch, the operation is convenient and fast, and various defects of the traditional test mode are overcome, so that the whole test process is optimized, the working efficiency is improved, and the power failure time is saved.
Drawings
FIG. 1 is a schematic structural diagram of an adapter of the present invention;
FIG. 2 is a schematic view of the internal connections of the present invention;
FIG. 3 is a schematic diagram of a ground terminal according to the present invention;
FIG. 4 is a schematic view of section A-A of FIG. 3;
FIG. 5 is a schematic view of section B-B of FIG. 3;
FIG. 6 is a schematic structural view of a quick connect plug;
FIG. 7 is a schematic view of the quick connect assembly as a whole;
in the drawing, 1, a junction box, 2, a ground wire connecting end, 101, a quick-connection plug, 102, a socket shell, 103, a manual locking ring, 104, a wiring terminal, 105, a connecting cylinder, 106, a connecting seat, 107, a connecting wire, 108, a receiving hole, 109, a locking groove, 110, a driving wheel, 111, a driven wheel, 112, a driving intermediate wheel, 113, a driven intermediate wheel, 114, a clutch wheel, 115, a connecting rod, 116, a sliding seat, 117, a shaft rod, 118, a sliding groove, 119 and a conducting rod.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments:
in specific embodiment 1, as shown in fig. 1 and 2, the present invention is a portable universal adapter box for high voltage tests of transformers, including an equipment connection area, a transfer switch, and an instrument connection area, which are disposed in the adapter box, wherein an equipment connection end is disposed in the equipment connection area, an instrument connection end is disposed in the instrument connection area, and the equipment connection end and the instrument connection end are electrically connected by means of the transfer switch, and the adapter box is characterized in that: the equipment connecting end comprises a high-voltage equipment interface group, a medium-voltage equipment interface group and a low-voltage equipment interface group, and the equipment connecting end comprises a high-voltage instrument interface group, a medium-voltage instrument interface group and a low-voltage instrument interface group;
the high-voltage equipment interface group comprises an interface A1, an interface B1, an interface C1 and an interface O1;
the medium voltage equipment interface group comprises an interface A2, an interface B2, an interface C2 and an interface O2;
the low-voltage equipment interface group comprises an interface A3, an interface B3 and an interface C3;
the high-voltage instrument interface group comprises an interface a1, an interface b1, an interface c1 and an interface o 1;
the medium voltage instrument interface group comprises an interface a2, an interface b2, an interface c2 and an interface o 2;
the low-voltage instrument interface group comprises an interface a3, an interface b3 and an interface c 3;
the change-over switch is provided with a high-voltage change-over contact group, a medium-voltage change-over contact group and a low-voltage change-over contact group;
the high-voltage switching contact group is provided with four groups, each interface in the high-voltage equipment interface group is respectively connected with the input end of the high-voltage switching contact group, each interface in the high-voltage instrument interface group is respectively connected with the output end of the high-voltage switching contact group, the output end of the high-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the third contact are connected with the interfaces of the high-voltage instrument interface group, and the fifth contact and the sixth contact are grounded;
the medium-voltage switching contact group is provided with four groups, each interface in the medium-voltage equipment interface group is respectively connected with the input end of the medium-voltage switching contact group, each interface in the medium-voltage instrument interface group is respectively connected with the output end of the medium-voltage switching contact group, the output end of the medium-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the contact are connected with the interfaces of the medium-voltage instrument interface group, and the third contact, the fourth contact and the six contacts are grounded;
the low-voltage switching contact group is provided with three groups, each interface in the low-voltage equipment interface group is respectively connected with the input end of the low-voltage switching contact group, each interface in the low-voltage instrument interface group is respectively connected with the output end of the low-voltage switching contact group, the output end of the low-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the contact are connected with the interfaces of the low-voltage instrument interface group, and the third contact, the fourth contact and the fifth contact are grounded. The change-over switch is a multi-gear change-over switch.
Specifically, the high-voltage switching contact group is provided with four groups which are respectively connected between a1 and a1, between B1 and B1, between C1 and C1, and between O1 and O1, as shown in fig. 2,
high-pressure area:
the interface A1 is connected with the input end A11 of the high-voltage switching contact, the corresponding output ends a11, a12 and a13 are respectively and electrically connected with the interface a1 of the high-voltage instrument interface group, the output ends a15 and a16 are grounded,
the interface B1 is connected with the input end B11 of the high-voltage switching contact, the corresponding output ends B11, B12 and B13 are respectively and electrically connected with the interface B1 of the high-voltage instrument interface group, the output ends B15 and B16 are grounded,
the interface C1 is connected with the input end C11 of the high-voltage switching contact, the corresponding output ends C11, C12 and C13 are respectively and electrically connected with the interface C1 of the high-voltage instrument interface group, the output ends C15 and C16 are grounded,
the interface O1 is connected with an input end O11 of the high-voltage switching contact, corresponds to output ends O11, O12 and O13, is respectively and electrically connected with an interface O1 of the high-voltage instrument interface group, and the output ends O15 and O16 are grounded;
a middle pressure area:
the interface A2 is connected with the input end A21 of the medium voltage changeover contact, the corresponding output ends a21 and a22 are respectively and electrically connected with the interface a2 of the medium voltage instrument interface group, the output ends a23, a24 and a26 are grounded,
the interface B2 is connected with the input end B21 of the medium voltage changeover contact, the corresponding output ends B21 and B22 of the interface B3578 are respectively and electrically connected with the interface B2 of the medium voltage instrument interface group, the output ends B23, B24 and B26 are grounded,
the interface C2 is connected with the input end C21 of the medium voltage changeover contact, the corresponding output ends C21 and C22 are respectively and electrically connected with the interface C2 of the medium voltage instrument interface group, the output ends C23, C24 and C26 are grounded,
the interface O2 is connected with an input end O21 of the medium-voltage switching contact, corresponds to output ends O21 and O22, is electrically connected with an interface O2 of the medium-voltage instrument interface group respectively, and is grounded at output ends O23, O24 and O26;
low-voltage region:
the interface A3 is connected with the input end A31 of the low-voltage switching contact, the corresponding output ends a31 and a32 are respectively and electrically connected with the interface a2 of the low-voltage instrument interface group, the output ends a23, a24 and a25 are grounded,
the interface B3 is connected with the input end B31 of the low-voltage switching contact, the corresponding output ends B31 and B32 of the interface B3578 are respectively and electrically connected with the interface B2 of the low-voltage instrument interface group, the output ends B23, B24 and B25 are grounded,
the interface C3 is connected with the input end C31 of the low-voltage switching contact, the corresponding output ends C31 and C32 are respectively and electrically connected with the interface C2 of the low-voltage instrument interface group, the output ends C23, C24 and C25 are grounded,
the interface O3 is connected with an input end O31 of the low-voltage switching contact, corresponds to output ends O31 and O32, is electrically connected with an interface O2 of the low-voltage instrument interface group respectively, and is grounded at output ends O23, O24 and O25;
the equipment link still be provided with the test wire terminal, the test wire terminal include high-voltage test wire terminal X1, medium-voltage test wire terminal X2, low-voltage test wire terminal X3, the fourth contact in four groups of high-voltage switching contact group all connect electrically at high-voltage test wire terminal X1, the fifth contact in four groups of medium-voltage switching contact group all connect electrically at medium-voltage test wire terminal X2, the sixth contact in three groups of low-voltage switching contact group all connect electrically at low-voltage test wire terminal X3.
Specifically, as shown in fig. 2, the knob of the change-over switch is in first to sixth gears from top to bottom, in a high-voltage region, the output ends a14, b14, c14 and o14 are respectively connected with a high-voltage test wire binding post X1, and when the change-over switch is shifted to a fourth gear, the high-voltage equipment interface is in short circuit; in the middle-voltage area, output ends a25, b25, c25 and o25 are respectively connected with a middle-voltage test line binding post X2, when a change-over switch is shifted to a fifth gear, a middle-voltage equipment interface is in short circuit, in the low-voltage area, output ends a36, b36, c36 and o36 are respectively connected with a middle-voltage test line binding post X3, when the change-over switch is shifted to a sixth gear, a low-voltage equipment interface is in short circuit, and the high-voltage test line binding post is provided with a binding post for overhauling a transformer;
when the transformer is used, detection equipment is respectively connected with a phase a, a phase b, a phase c and a phase o in a corresponding high, medium and low instrument interface group according to detection requirements, phase joints of high and medium voltage ends of the transformer are connected with A, B, C, O corresponding to the high, medium and low voltage equipment interface group, and the function target of the change-over switch is to change the wiring state of the transformer, so that the measurement is convenient;
the switching is carried out to a first gear and a second gear, namely a frequency response gear and a winding resistance gear, and equipment and an instrument interface group corresponding to high, medium and low voltages are directly connected at the moment, so that the connection test of the instrument is facilitated;
switching to a third-gear on-load switch, wherein only the transformer is conducted with a high-voltage area corresponding to the detection instrument, and all low-voltage ports in the transformer are grounded;
when the transformer is switched to a fourth gear, namely high-voltage dielectric loss, at the moment, only each output end of a high-voltage area of the transformer is in short circuit with a wiring terminal X1, a middle-low voltage end is grounded, and an instrument detects the voltage through a wiring terminal X1;
when the voltage is switched to the fifth gear, medium voltage dielectric loss is generated, at the moment, only the output ends of the medium voltage area of the transformer are in short circuit with the wiring terminal X2, the high-low voltage ends are grounded, and an instrument detects the voltage through the wiring terminal X2;
when the transformer is switched to a sixth gear, namely low-voltage dielectric loss, at the moment, only each output end of a low-voltage area of the transformer is in short circuit with a wiring terminal X3, a high-voltage end and a medium-voltage end are grounded, and an instrument detects the voltage through a wiring terminal X3;
therefore, when the connection relation between the testing instrument and the transformer needs to be changed, the connection mode can be switched by directly rotating the change-over switch, namely, the port of the transformer required by the detection manual is switched to the instrument and is grounded or short-circuited, the operation is convenient and fast, and various defects of the traditional testing mode are overcome, so that the whole testing process is optimized, the working efficiency is improved, and the power failure time is saved.
In specific embodiment 2, as shown in fig. 3 to 7, the present invention further discloses a ground wire connection end structure, the adaptor box 1 is provided with a ground wire connection end 2, the ground wire connection end 2 is a quick connection assembly, the quick connection assembly includes a quick connection socket and a quick connection plug 101 inserted in the quick connection socket, the quick connection socket includes a socket housing 102, a manual locking ring 103, a driving gear set, a connection device and a connection terminal 104 arranged at an outer side of the socket housing 102, the connection terminal 104 is electrically connected to the connection device by a conductive wire, the manual locking ring 103 is in driving connection with the connection device by the driving gear set, the connection device includes a connection cylinder 105 and a connection seat 106 which are in driving connection with the manual locking ring 103 by the gear set, a connection lead 107 is arranged between the connection cylinder 105 and the connection seat 106, the connection seat 106 is provided with a receiving hole 108, one end of connecting wire 107 in accomodating hole 108 with the help of the spring coupling, the other end is fixed on the inner wall of connecting cylinder 105, connecting wire 107 have the degree of freedom of stretching in accomodating hole 108 with the help of the rotation of connecting cylinder 105, quick-connect plug 101 compress tightly with the help of connecting wire 107 and fix on connecting seat 106, quick-connect plug 101 be provided with a set of annular locking groove 109 along the axis direction equidistant, accomodate that hole 108 quantity equals and the interval between the adjacent hole 108 of accomodating equals with the interval between the adjacent locking groove 109 with locking groove 109 quantity.
When the quick-connection assembly is used, an operator is required to fix the quick-connection plug 101 to two ends of a connection cable to enable the quick-connection plug 101 to become a terminal of the connection cable, the quick-connection plug 101 is inserted into an inner hole of the manual locking ring 103, as shown in fig. 3 and 7, the quick-connection plug 101 is inserted inwards along the axial direction of the connecting seat 106, after the quick-connection plug is inserted in place, as shown in fig. 7, the manual locking ring 103 is rotated clockwise, the manual locking ring 103 drives the gear set and finally the connecting cylinder 105 in the connection device is rotated clockwise in the socket shell 102, the connecting lead 107 pulled between the connecting cylinder 105 and the receiving hole 108 is pulled out, along with the continuous rotation of the connecting cylinder 105, the connecting lead 107 is wrapped on the outer side face of the quick-connection plug 101, so that the quick-connection of the quick-connection plug 101 is realized, the field connection operation of the distribution box is facilitated, the connecting lead 107 is a bare copper wire, the copper wires are parallel to each other, and after connecting wire 107 wraps up on quick connector 101, the wire scatters and has increased area of contact, has reduced connecting resistance, and the spring that sets up in accomodating hole 108 is connected the back at quick connector 101, and is taut with connecting wire 107, has improved the firm degree of connection.
Further, the driving gear set comprises a driving wheel 110, a driven wheel 111, a driving intermediate wheel 112, a driven intermediate wheel 113 and a clutch wheel 114, the driving wheel 110 and the driven wheel 111 are both internal gears, the manual locking ring 103 is fixed with the driving wheel 110 by a connecting rod 115, the connecting cylinder 105 is fixed with the driven wheel 111, the connecting seat 106 is in an arc structure, a sliding seat 116 is arranged on the inner arc surface of the connecting seat 106, the clutch wheel 114 is arranged on the sliding seat 116, the driving wheel 110, the driven wheel 111 and the clutch wheel 114 are coaxially arranged, the driving intermediate wheel 112 and the driven intermediate wheel 113 are installed by a shaft rod 117 arranged on the connecting seat 106, the driving wheel 110 is in transmission connection with a clutch wheel 114 through a driving intermediate wheel 112, the driven wheel 111 is in driving connection with a clutch wheel 114 via a driven intermediate wheel 113. When the manual locking ring 103 rotates, the driving wheel 110, the driving intermediate wheel 112 and the clutch wheel 114 rotate along with the manual locking ring, the wider clutch wheel 114 is respectively meshed with the driving intermediate wheel 112 and the driven intermediate wheel 113, power is transmitted from the driving intermediate wheel 112 to the driven intermediate wheel 113, the driven intermediate wheel 113 continuously transmits the driven wheel 111, the connecting cylinder 105 fixed with the driven wheel 111 rotates, the arranged clutch wheel 114 is installed through the sliding seat 116, when the quick-connect plug 101 is inserted, the front end of the plug pushes the sliding seat 116, the clutch wheel 114 moves inwards along with the insertion of the quick-connect plug 101, and when the quick-connect plug 101 is in place, the clutch wheel 114 is just meshed with the driving intermediate wheel 112 and the driven intermediate wheel 113, and transmission connection of the driving intermediate wheel 112 and the driven intermediate wheel 113 is achieved.
Further, the sliding seat 116 is fixed by a sliding groove 118 disposed on the inner arc surface of the connecting seat 106, and a spring is disposed in the sliding groove 118. When the quick-connection plug 101 is loosened by means of reverse rotation of the spring on the manual locking ring 103, the spring pulls the sliding seat 116 to reset, and the quick-connection plug 101 is popped up at the moment, so that the loosening effect is obviously displayed, and the stress damage of internal parts caused by manual taking out of the quick-connection plug 101 by personnel is avoided.
Further, a conductive rod 119 is arranged on the inner side wall of the connecting cylinder 105, the connecting terminal 104 is electrically connected with the connecting seat 106 through a conductive wire, and a spring made of metal is connected between the conductive rod 119 and the conductive wire. The one end of connecting wire 107 is neatly connected with the help of conducting rod 119, the pull-out length of different connecting wires 107 is guaranteed to be equal, the types of springs arranged in the accommodating holes 108 are the same, therefore, the tension is equal, the tension borne by the quick-connect plug 101 is guaranteed to be uniform, a good separating effect can be guaranteed when the quick-connect plug 101 is loosened, excessive stress of a certain connecting wire 107 is avoided, deformation is caused, recovery is affected, meanwhile, popping-out of the quick-connect plug 101 is facilitated, the better electric connection between the conducting rod 119 and a conducting wire is guaranteed when the conducting rod 119 rotates along with the connecting cylinder 105 due to the spring made of metal materials, good electrifying performance is guaranteed, and the resistance value of the connecting part is reduced.
Claims (5)
1. The utility model provides a general switching box of portable transformer high-voltage test, is including setting up equipment joining region, change over switch and the instrument joining region in change box (1), equipment joining region in be provided with the equipment connection end, the instrument joining region be provided with the instrument connection end, equipment connection end and instrument connection end form the electricity with the help of change over switch and connect its characterized in that: the equipment connecting end comprises a high-voltage equipment interface group, a medium-voltage equipment interface group and a low-voltage equipment interface group, and the equipment connecting end comprises a high-voltage instrument interface group, a medium-voltage instrument interface group and a low-voltage instrument interface group;
the high-voltage equipment interface group comprises an interface A1, an interface B1, an interface C1 and an interface O1;
the medium voltage equipment interface group comprises an interface A2, an interface B2, an interface C2 and an interface O2;
the low-voltage equipment interface group comprises an interface A3, an interface B3 and an interface C3;
the high-voltage instrument interface group comprises an interface a1, an interface b1, an interface c1 and an interface o 1;
the medium voltage instrument interface group comprises an interface a2, an interface b2, an interface c2 and an interface o 2;
the low-voltage instrument interface group comprises an interface a3, an interface b3 and an interface c 3;
the change-over switch is provided with a high-voltage change-over contact group, a medium-voltage change-over contact group and a low-voltage change-over contact group;
the high-voltage switching contact group is provided with four groups, each interface in the high-voltage equipment interface group is respectively connected with the input end of the high-voltage switching contact group, each interface in the high-voltage instrument interface group is respectively connected with the output end of the high-voltage switching contact group, the output end of the high-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the third contact are connected with the interfaces of the high-voltage instrument interface group, and the fifth contact and the sixth contact are grounded;
the medium-voltage switching contact group is provided with four groups, each interface in the medium-voltage equipment interface group is respectively connected with the input end of the medium-voltage switching contact group, each interface in the medium-voltage instrument interface group is respectively connected with the output end of the medium-voltage switching contact group, the output end of the medium-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the contact are connected with the interfaces of the medium-voltage instrument interface group, and the third contact, the fourth contact and the six contacts are grounded;
the low-voltage switching contact group is provided with three groups, each interface in the low-voltage equipment interface group is respectively connected with the input end of the low-voltage switching contact group, each interface in the low-voltage instrument interface group is respectively connected with the output end of the low-voltage switching contact group, the output end of the low-voltage switching contact group comprises six groups of contacts which are sequentially numbered, the first contact, the second contact and the contact are connected with the interfaces of the low-voltage instrument interface group, and the third contact, the fourth contact and the fifth contact are grounded;
the adapter box (1) is provided with a ground wire connecting end (2), the ground wire connecting end (2) is a quick-connection assembly, the quick-connection assembly comprises a quick-connection socket and a quick-connection plug (101) inserted in the quick-connection socket, the quick-connection socket comprises a socket shell (102), a manual locking ring (103), a driving gear set, a connecting device and a wiring terminal (104) arranged on the outer side of the socket shell (102), the wiring terminal (104) is electrically connected with the connecting device through a conductive wire, the manual locking ring (103) is in driving connection with the connecting device through the driving gear set, the connecting device comprises a connecting cylinder (105) and a connecting seat (106) which are in driving connection with the manual locking ring (103) through the gear set, a connecting lead (107) is arranged between the connecting cylinder (105) and the connecting seat (106), and a receiving hole (108) is arranged on the connecting seat (106), one end of connecting wire (107) in accomodating hole (108) with the help of spring coupling, the other end is fixed on the inner wall of connecting cylinder (105), connecting wire (107) have the degree of freedom of stretching in accomodating hole (108) with the help of the rotation of connecting cylinder (105), quick-connect plug (101) compress tightly with the help of connecting wire (107) and fix on connecting seat (106), quick-connect plug (101) be provided with a set of annular locking groove (109) along axis direction equidistant, accomodate that hole (108) quantity equals and adjacent accomodate the interval between hole (108) and the interval between adjacent locking groove (109) equals with locking groove (109) quantity.
2. The portable transformer high-voltage test universal adapter box according to claim 1, characterized in that: the equipment link still be provided with the test wire terminal, the test wire terminal include high-voltage test wire terminal X1, medium-voltage test wire terminal X2, low-voltage test wire terminal X3, the fourth contact in four groups of high-voltage switching contact group all connect electrically at high-voltage test wire terminal X1, the fifth contact in four groups of medium-voltage switching contact group all connect electrically at medium-voltage test wire terminal X2, the sixth contact in three groups of low-voltage switching contact group all connect electrically at low-voltage test wire terminal X3.
3. The portable transformer high-voltage test universal adapter box according to claim 1, characterized in that: the driving gear set comprises a driving wheel (110), a driven wheel (111), a driving middle wheel (112), a driven middle wheel (113) and a clutch wheel (114), the driving wheel (110) and the driven wheel (111) are all internal gears, the manual locking ring (103) is fixed with the driving wheel (110) through a connecting rod (115), the connecting cylinder (105) is fixed with the driven wheel (111), the connecting seat (106) is of an arc structure, a sliding seat (116) is arranged on the inner arc surface of the connecting seat (106), the clutch wheel (114) is arranged on the sliding seat (116), the driving wheel (110), the driven wheel (111) and the clutch wheel (114) are coaxially arranged, the driving middle wheel (112) and the driven middle wheel (113) are arranged through a shaft rod (117) arranged on the connecting seat (106), and the driving wheel (110) is in transmission clutch connection with the driving middle wheel (112), the driven wheel (111) is in transmission connection with the clutch wheel (114) through a driven intermediate wheel (113).
4. The universal adapter box for high-voltage test of the portable transformer according to claim 3, wherein: the sliding seat (116) is fixed by a sliding groove (118) arranged on the cambered surface of the inner side of the connecting seat (106), and a spring is also arranged in the sliding groove (118).
5. The universal adapter box for high-voltage test of the portable transformer according to claim 3, wherein: the connecting device is characterized in that a conductive rod (119) is arranged on the inner side wall of the connecting cylinder (105), the connecting terminal (104) is electrically connected with the connecting seat (106) through a conductive wire, and a spring made of metal is connected between the conductive rod (119) and the conductive wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138432.7A CN108414796B (en) | 2018-02-10 | 2018-02-10 | Portable universal adapter box for high-voltage test of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810138432.7A CN108414796B (en) | 2018-02-10 | 2018-02-10 | Portable universal adapter box for high-voltage test of transformer |
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| Publication Number | Publication Date |
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| CN108414796A CN108414796A (en) | 2018-08-17 |
| CN108414796B true CN108414796B (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810138432.7A Active CN108414796B (en) | 2018-02-10 | 2018-02-10 | Portable universal adapter box for high-voltage test of transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111707887A (en) * | 2020-05-22 | 2020-09-25 | 国网河北省电力有限公司保定供电分公司 | Optimal scheme for routine test of power transformer |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19513441C5 (en) * | 1995-04-13 | 2008-07-31 | BAUR Prüf-und Messtechnik GmbH | Circuit arrangement for generating a test voltage for testing electrical equipment |
| CN202383166U (en) * | 2011-12-15 | 2012-08-15 | 邯郸供电公司 | High-voltage test connection changeover box |
| CN103033652A (en) * | 2012-12-27 | 2013-04-10 | 江苏省电力公司电力科学研究院 | Tester wiring concentration conversion device for vehicle |
| CN103311825A (en) * | 2013-06-29 | 2013-09-18 | 国家电网公司 | Movable overhauling power box special for power grid |
| CN103698621B (en) * | 2013-09-05 | 2016-08-17 | 国家电网公司 | A kind of transformer vehicular integrated test system |
| CN203849288U (en) * | 2014-04-30 | 2014-09-24 | 国家电网公司 | Wiring conversion device for electrical routine tests of transformer |
| CN204989239U (en) * | 2015-07-29 | 2016-01-20 | 国家电网公司 | Transformer test multipurpose plant of working a telephone switchboard |
| CN106226564B (en) * | 2016-08-16 | 2023-07-11 | 国家电网公司 | Routine test transfer box for high-voltage capacitance type voltage transformer without disassembling lead |
| CN206057386U (en) * | 2016-09-21 | 2017-03-29 | 国网天津市电力公司 | Extra-high voltage regulating compensation no-load transformer and short-circuit test connecting wire switching device |
| CN206387827U (en) * | 2017-01-16 | 2017-08-08 | 国家电网公司 | DC Resistance Test of Transformer wiring boxcar |
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Application publication date: 20180817 Assignee: Hebei Huawan Electronic Technology Co.,Ltd. Assignor: STATE GRID HEBEI ELECTRIC POWER Co.,Ltd. BAODING POWER SUPPLY BRANCH Contract record no.: X2024980002058 Denomination of invention: Portable transformer high-voltage test universal adapter box Granted publication date: 20200211 License type: Common License Record date: 20240209 |