CN216529722U - On-site joint debugging joint testing device - Google Patents
On-site joint debugging joint testing device Download PDFInfo
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- CN216529722U CN216529722U CN202122545360.8U CN202122545360U CN216529722U CN 216529722 U CN216529722 U CN 216529722U CN 202122545360 U CN202122545360 U CN 202122545360U CN 216529722 U CN216529722 U CN 216529722U
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- current transformer
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Abstract
The utility model discloses an on-site joint debugging joint test device, wherein an upper shell is connected with a lower shell through bolts, a circuit board is installed on the lower shell, a first socket and a second socket are respectively installed at the front part of the lower shell, a power supply socket is arranged at the upper part of the upper shell, a current transformer test terminal and a voltage transformer test terminal are arranged at the upper part of the upper shell, a transformer is installed at the inner top of the upper shell, the power supply socket is connected with the transformer, the current transformer test terminal is respectively connected with a current transformer and a zero sequence current transformer, and the voltage transformer test terminal is respectively connected with the voltage transformer and the zero sequence voltage transformer. The utility model has the beneficial effects that: the instrument converts the primary side heavy current into the secondary side small current to measure according to the electromagnetic induction principle of the mutual inductor, can measure circuit equipment with heavy current and large voltage, reduces debugging potential safety hazards, and meanwhile cannot cause damage to a detection instrument.
Description
Technical Field
The utility model relates to the technical field of field debugging boxes, in particular to a field joint debugging device.
Background
The field joint debugging joint box is used for detecting the circuit fault of the power distribution terminal on site when the power distribution terminal has a fault, adopting the field debugging box and a current and voltage detecting instrument when the circuit fault is detected on site, connecting a cable of the power distribution terminal to the field joint debugging joint box, and then connecting the field joint debugging joint box with the current and voltage detecting instrument through the cable for detecting the on-off state of the circuit.
In the prior art, the field header only adopts a simple circuit on-off circuit and does not adopt a protection device, so that potential safety hazards exist when a large-current large-voltage circuit is tested, and meanwhile, a large-voltage current can cause damage to a detection instrument.
Therefore, it is necessary to provide a field joint debugging device for the above problems.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings in the prior art, the present invention provides a field joint debugging joint test device to solve the above-mentioned problems.
An on-site joint debugging joint test device comprises an upper shell, a lower shell and a circuit board, wherein the upper shell is connected with the lower shell through a bolt, the circuit board is arranged on the lower shell, the front part of the lower shell is respectively provided with a first socket and a second socket, the upper part of the upper shell is provided with a power supply interface, the upper part of the upper shell is provided with a plurality of current transformer test terminals and a plurality of voltage transformer test terminals, the circuit board is provided with a current transformer, a zero sequence current transformer, a voltage transformer and a zero sequence voltage transformer, a transformer is arranged at the inner top of the upper shell, the power supply interface is connected with the transformer, the test terminals of the current transformer are respectively connected with the wire inlet ends of the current transformer and the zero sequence current transformer, the voltage transformer test terminal is respectively connected with the wire inlet ends of the voltage transformer and the zero sequence voltage transformer; the outlet ends of the current transformer and the zero sequence current transformer are connected with a first socket; and the outlet ends of the voltage transformer and the zero sequence voltage transformer are connected with a second socket.
Preferably, the lower terminal surface of last casing is provided with the seal groove, the seal groove inlays and is equipped with the sealing washer.
Preferably, the first socket comprises a first plug body, a first silica gel pad and a first plug cap, the first plug body is fixedly mounted on the lower shell through the first silica gel pad by bolts, the first plug cap is mounted on the first plug body in a threaded manner, and a first cover cap is movably connected to the side edge of the first plug cap.
Preferably, the inside of first plug body is provided with a plurality of first jack, first jack passes through binding post on the cable junction board, the outside of first plug body is provided with the first contact pin of a plurality of.
Preferably, the second socket comprises a second plug body, a second silica gel pad and a second plug cap, the second plug body is fixedly mounted on the lower shell through the second silica gel pad by bolts, the second plug cap is mounted on the second plug body in a threaded manner, and a second cover cap is movably connected to the side edge of the second plug cap.
Preferably, the inboard of second plug body is provided with a plurality of second jack, the binding post on the cable junction board is passed through to the second jack, the outside of second plug body is provided with a plurality of second contact pin.
Preferably, a handle is arranged at the rear part of the lower shell.
Compared with the prior art, the utility model has the beneficial effects that: the utility model is provided with a current transformer test terminal, a voltage transformer test terminal and various transformers, and the instrument for measuring the primary side heavy current by converting the primary side heavy current into the secondary side small current based on the electromagnetic induction principle of the transformers can measure the circuit equipment with heavy current and large voltage, reduce the debugging potential safety hazard and simultaneously can not cause the damage of the detection instrument.
Drawings
FIG. 1 is a schematic diagram of a field joint debugging joint test device according to the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the present invention in an expanded state;
FIG. 4 is a top housing block diagram of the present invention;
fig. 5 and 6 are structural views of a first socket of the present invention;
fig. 7 and 8 are structural views of a second socket of the present invention;
FIG. 9 is a first plug cap configuration of the present invention;
FIG. 10 is a diagram of a second plug cap configuration of the present invention.
Reference numbers in the figures: 1. an upper housing; 2. a lower housing; 3. a circuit board; 4. a first socket; 5. a second socket; 6. a current transformer test terminal; 7. a voltage transformer test terminal; 8. a current transformer; 9. a zero sequence current transformer; 10. a voltage transformer; 11. a zero sequence voltage transformer; 12. a sealing groove; 13. a seal ring; 14. a first plug body; 15. a first silica gel pad; 16. a first plug cap; 17. a first cover; 18. a first jack; 19. a first pin; 20. a second plug body; 21. a second silica gel pad; 22. a second plug cap; 23. A second cover; 24. a second jack; 25. a second pin; 26. a handle; 27. and a power supply interface.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The embodiments of the utility model will be described in detail below with reference to the drawings, but the utility model can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 and fig. 2 to 10, an on-site joint debugging and joint testing device comprises an upper casing 1, a lower casing 2 and a circuit board 3, wherein the upper casing 1 is connected with the lower casing 2 through bolts, the circuit board 3 is installed on the lower casing 2, a first socket 4 and a second socket 5 are respectively installed at the front part of the lower casing 2, a power socket 27 is arranged at the upper part of the upper casing 1, a plurality of current transformer testing terminals 6 and a plurality of voltage transformer testing terminals 7 are arranged at the upper part of the upper casing, a current transformer 8, a zero sequence current transformer 9, a voltage transformer 10 and a zero sequence voltage transformer 11 are installed on the circuit board 3, a transformer is installed at the inner top part of the upper casing 1, the power socket 27 is connected with the transformer, the current transformer testing terminals 6 are respectively connected with the wire inlet ends of the current transformer 8 and the zero sequence current transformer 9, the voltage transformer test terminal 7 is respectively connected with the wire inlet ends of a voltage transformer 10 and a zero sequence voltage transformer 11, and the wire outlet ends of the current transformer 8 and the zero sequence current transformer 9 are connected with a first socket; and the outlet ends of the voltage transformer 10 and the zero sequence voltage transformer 11 are connected with a second socket.
Further, a sealing groove 12 is formed in the lower end face of the upper housing 1, and a sealing ring 13 is embedded in the sealing groove 12.
The beneficial effects of the further technical scheme are that: the sealing ring 13 makes the connection between the upper shell 1 and the lower shell 2 tight.
Further, the first socket 4 includes a first plug body 14, a first silicone gasket 15 and a first plug cap 16, the first plug body 14 is fixedly mounted on the lower housing 2 through the first silicone gasket 15 by bolts, the first plug cap 16 is mounted on the first plug body 14 in a threaded manner, and a first cover 17 is movably connected to a side of the first plug cap 16.
The beneficial effects of the further technical scheme are that: the first cover 17 is closed when the first socket 4 is not in use, preventing dust from entering the socket, and the pins are conductive and open when in use.
Further, a plurality of first jacks 18 are arranged on the inner side of the first plug body 14, the first jacks 18 are connected with the wiring terminals on the circuit board 3 through cables, and a plurality of first pins 19 are arranged on the outer side of the first plug body 14.
The beneficial effects of the further technical scheme are that: the first jack 18 is connected with a wiring terminal on the circuit board 3 through a cable, the first contact pin 19 is externally connected with an aviation plug, the aviation plug is connected with a current detection instrument, and the plugging and unplugging are convenient.
Further, the second socket 5 includes a second plug body 20, a second silicone gasket 21 and a second plug cap 22, the second plug body 20 is fixedly mounted on the lower housing 2 through the second silicone gasket 21 by bolts, the second plug cap 22 is threadedly mounted on the second plug body 20, and a second cover cap 23 is movably connected to a side of the second plug cap 22.
The beneficial effects of the further technical scheme are that: the second cover 23 is closed when the second socket 5 is not in use, so as to prevent dust from entering the socket, and the pins are conductive and open when in use.
Further, a plurality of second jacks 24 are arranged on the inner side of the second plug body 20, the second jacks 24 are connected with the wiring terminals on the circuit board 3 through cables, and a plurality of second contact pins 25 are arranged on the outer side of the second plug body 20.
The beneficial effects of the further technical scheme are that: the second jack 24 is connected with a wiring terminal on the circuit board 3 through a cable, the second contact pin 25 is externally connected with an aviation plug, the aviation plug is connected with a voltage detection instrument, and the plugging and the unplugging are convenient.
Further, a handle 26 is mounted at the rear of the lower case 1.
The beneficial effects of the further technical scheme are that: handle 26 is portable and hand-held.
Compared with the prior art, the utility model has the beneficial effects that: the utility model has the beneficial effects that: the utility model is provided with the current transformer test terminal, the voltage transformer test terminal and various transformers, and the instrument for measuring the primary side heavy current by converting the primary side heavy current into the secondary side small current based on the electromagnetic induction principle of the transformers can measure the circuit equipment with heavy current and large voltage, reduces the debugging potential safety hazard and does not cause the damage of the detection instrument. Go up the upper portion of casing 1 and be provided with power interface 27, go up the interior top of casing 1 and install the transformer, power interface 27 connects the transformer, and first socket 4 and second socket 5 are connected respectively to the transformer again, when needing to charge, power interface 27 external power source, and the equipment that needs to charge passes through the aviation socket and connects on first socket 4 or second socket 5.
The working principle is as follows:
the installation step:
the circuit board 3 is installed on the lower shell 2, the front part of the lower shell 2 is respectively provided with a first socket 4 and a second socket 5, the upper part of the upper shell is provided with a plurality of current transformer test terminals 6 and a plurality of voltage transformer test terminals 7, the circuit board 3 is provided with a current transformer 8, a zero sequence current transformer 9, a voltage transformer 10 and a zero sequence voltage transformer 11, the current transformer test terminals 6 are respectively connected with the wire inlet ends of the current transformer 8 and the zero sequence current transformer 9, the voltage transformer test terminals 7 are respectively connected with the wire inlet ends of the voltage transformer 10 and the zero sequence voltage transformer 11, and the wire outlet ends of the current transformer 8 and the zero sequence current transformer 9 are connected with the first socket 4; the outlet ends of the voltage transformer 10 and the zero sequence voltage transformer 11 are connected with the second socket 5, the first socket 4 is externally connected with a current detection instrument, and the second socket 5 is externally connected with a voltage detection instrument.
When in use:
the on-off measurement mode of the circuit has two modes, one is a current measurement mode, and the other is a voltage measurement mode;
when the current measuring mode is adopted, the wire joints of the power distribution terminal are respectively inserted into the test terminals (I) of the current transformerA、IB、IC、IN、ION)6, the contact pin of the first socket 4 is externally connected with an aviation plug of a current detection instrument, if the power distribution terminal is electrified, when current passes through a current transformer 8 and a zero sequence current transformer 9, large current is reduced to small current, the small current flows into the current detection instrument through the first socket 4, when the current detection instrument displays current related data, the on-off of the power distribution terminal circuit is normal, and if no related current parameter is displayed, the on-off of the power distribution terminal circuit is abnormal.
When the voltage measuring mode is adopted, the wire joints of the power distribution terminal are respectively inserted into the test terminals (U) of the voltage transformerA、UB、UC、UN、UON)7, the contact pin of the second socket 5 is externally connected with an aviation plug of a voltage detection instrument, if the power distribution terminal is electrified, when current passes through a voltage transformer 10 and a zero sequence voltage transformer 11, large voltage is reduced to small voltage and flows into the voltage detection instrument through the second socket 5, when the voltage detection instrument displays voltage related data, the on-off of the power distribution terminal circuit is normal, and if no related voltage parameter is displayed, the on-off of the power distribution terminal circuit is abnormal.
The current transformer 8 is an instrument for measuring a large primary-side current by converting the large primary-side current into a small secondary-side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding.
The zero sequence current transformer 9 can be applied to three-phase lines with one current transformer or three current transformersThe phase conductors are passed together through a zero sequence current transformer, or a zero sequence current transformer is mounted on the neutral conductor N, and these CTs are used to detect the sum of the current vectors of the three phases, i.e. the zero sequence currents Io, IA+IB+ICWhen the three-phase load connected on the line is completely balanced (no earth fault exists, and leakage current of the line and electrical equipment is not considered), Io is 0; when the three-phase load connected on the line is unbalanced, Io is equal to IN, and the zero-sequence current at the moment is unbalanced current IN(ii) a When a certain phase has an earth fault, a single-phase earth fault current Id is necessarily generated, and the zero sequence current I detected at the momentO＝IN+ Id is the vector sum of the three-phase unbalanced current and the single-phase ground current.
The basic structure of the voltage transformer 10/zero sequence voltage transformer 11 is very similar to that of a transformer, which also has two windings, one called primary winding and one called secondary winding. Both windings are mounted or wound on the core. Insulation is arranged between the two windings and between the windings and the iron core, so that the two windings and between the windings and the iron core are electrically isolated. When the voltage transformer operates, the primary winding is connected on a line in parallel, and the secondary winding N2 is connected with an instrument or a relay in parallel; therefore, when measuring the voltage on the high-voltage line, although the primary voltage is high, the secondary voltage is low, and the safety of operators and instruments can be ensured.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a scene allies oneself with transfers and allies oneself with examination device which characterized in that: the transformer comprises an upper shell (1), a lower shell (2) and a circuit board (3), wherein the upper shell (1) is connected with the lower shell (2), the circuit board (3) is installed on the lower shell (2), a first socket (4) and a second socket (5) are respectively installed at the front part of the lower shell (2), a power supply socket (27) is arranged at the upper part of the upper shell (1), a plurality of current transformer testing terminals (6) and a plurality of voltage transformer testing terminals (7) are arranged at the upper part of the upper shell (1), a current transformer (8), a zero sequence current transformer (9), a voltage transformer (10) and a zero sequence voltage transformer (11) are installed on the circuit board (3), a transformer is installed at the inner top of the upper shell (1), the power supply socket (27) is connected with the transformer, the current transformer testing terminals (6) are respectively connected with the current transformer (8) and the zero sequence current transformer (9), and the voltage transformer test terminal (7) is respectively connected with a voltage transformer (10) and a zero sequence voltage transformer (11).
2. The on-site joint debugging device according to claim 1, characterized in that: the lower end face of the upper shell (1) is provided with a sealing groove (12), and a sealing ring (13) is embedded in the sealing groove (12).
3. The on-site joint debugging device according to claim 1, characterized in that: the socket comprises a first socket body (4), a first silica gel pad (15) and a first socket cap (16), wherein the first socket body (14) is fixedly mounted on a lower shell (2) through the first silica gel pad (15), the first socket cap (16) is mounted on the first socket body (14) in a threaded mode, and a first cover cap (17) is movably connected to the side edge of the first socket cap (16).
4. The on-site joint debugging device according to claim 3, characterized in that: the inner side of the first plug body (14) is provided with a plurality of first jacks (18), the first jacks (18) are connected with wiring terminals on the circuit board (3) through cables, and the outer side of the first plug body (14) is provided with a plurality of first contact pins (19).
5. The on-site joint debugging device according to claim 1, characterized in that: the second socket (5) comprises a second plug body (20), a second silica gel pad (21) and a second plug cap (22), the second plug body (20) is fixedly mounted on the lower shell (2) through the second silica gel pad (21) by bolts, the second plug cap (22) is installed on the second plug body (20) in a threaded mode, and the side edge of the second plug cap (22) is movably connected with a second cover cap (23).
6. The on-site joint debugging device according to claim 5, characterized in that: the inside of second plug body (20) is provided with a plurality of second jack (24), binding post on cable junction board (3) is passed through in second jack (24), the outside of second plug body (20) is provided with a plurality of second contact pin (25).
7. The on-site joint debugging device according to claim 5, characterized in that: a handle (26) is arranged at the rear part of the lower shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122545360.8U CN216529722U (en) | 2021-10-21 | 2021-10-21 | On-site joint debugging joint testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122545360.8U CN216529722U (en) | 2021-10-21 | 2021-10-21 | On-site joint debugging joint testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216529722U true CN216529722U (en) | 2022-05-13 |
Family
ID=81523055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122545360.8U Active CN216529722U (en) | 2021-10-21 | 2021-10-21 | On-site joint debugging joint testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216529722U (en) |
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2021
- 2021-10-21 CN CN202122545360.8U patent/CN216529722U/en active Active
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