CN215526086U - A multi-functional constant temperature protective housing for on-spot mutual-inductor tester - Google Patents
A multi-functional constant temperature protective housing for on-spot mutual-inductor tester Download PDFInfo
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- CN215526086U CN215526086U CN202121396663.1U CN202121396663U CN215526086U CN 215526086 U CN215526086 U CN 215526086U CN 202121396663 U CN202121396663 U CN 202121396663U CN 215526086 U CN215526086 U CN 215526086U
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- 230000001681 protective effect Effects 0.000 title claims description 3
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000017525 heat dissipation Effects 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000035939 shock Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a multifunctional constant-temperature protection box for a field mutual inductor tester, which comprises an outer box body and an inner box body, wherein the inner box body is arranged in a cavity of the outer box body, and one side of the top of the outer box body is hinged with a box cover; ribs are arranged on the front side surface and the rear side surface of the outer box body close to the top, second screw holes are arranged on the ribs at equal intervals, first screw holes are arranged on the outer peripheral plate at the top of the inner box body corresponding to the second screw holes, and the outer box body and the inner box body are fixed through the first screw holes and the second screw holes through screws; a mounting hole is formed in the rear side face of the outer box body, and a cooling fan is mounted in the mounting hole; a control panel is arranged on the right side surface of the inner part of the outer box body, which is close to the top; a heater is arranged on the front side surface inside the inner box body; the inner part of the cavity of the inner box body is used for placing a mutual inductor tester for field test; the utility model can improve the field test efficiency of the mutual inductor tester, and has small volume and convenient carrying.
Description
Technical Field
The utility model relates to the technical field of protection boxes of electric power metering equipment, in particular to a multifunctional constant-temperature protection box for a field mutual inductor tester.
Background
The electric energy metering device is an electric energy metering device for measuring and recording related electric quantity, provides powerful basis for electric quantity statistics and electric charge recovery, and the mutual inductor is a core component in the electric energy metering device and is widely used in an electric power system. Because the mutual inductor tester belongs to a precise instrument, the requirement on the environment temperature is high, and when the field test is carried out, the high time and the low time of the field environment temperature often cannot meet the normal working temperature of the mutual inductor tester, so that the problems of black screen, incapability of starting up, error distortion and the like of the mutual inductor tester during the test are caused, and the field test work is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the transformer tester has the defects of black screen, incapability of starting up, error distortion and the like due to the environmental temperature in the process of testing a field transformer by the transformer tester, so that the field testing efficiency is influenced.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a multifunctional constant-temperature protection box for a field mutual inductor tester comprises an outer box body and an inner box body, wherein the inner box body is arranged in a cavity of the outer box body, and a box cover is hinged to one side of the top of the outer box body;
the opposite surfaces of the front side surface and the back side surface of the outer box body, which are close to the top, are respectively provided with ribs, the ribs are provided with second screw holes at equal intervals, the position of the outer peripheral plate at the top of the inner box body, which corresponds to the second screw holes, is provided with a first screw hole, and the outer box body and the inner box body are fixedly connected through the first screw hole and the second screw hole by screws;
a mounting hole is formed in the rear side face of the outer box body, and a cooling fan is mounted in the mounting hole;
a control panel is arranged on the right side surface of the inner part of the outer box body, which is close to the top;
a heater is arranged on the front side surface inside the inner box body;
a first temperature sensor and a second temperature sensor are arranged inside the inner box body, and the first temperature sensor and the second temperature sensor are respectively arranged at the bottom and the top of the rear side surface of the inner box body and are close to the right side surface of the inner box body;
and a mutual inductor tester for field test is placed in the cavity of the inner box body.
Preferably, still be provided with switch, heat dissipation switch and heating switch on the top sideboard of interior box respectively, switch sets up including on the top sideboard of the trailing flank of box and is close to the right side position, heat dissipation switch and heating switch set up respectively including on the sideboard of the right flank of box and be close to the rear side position.
Preferably, the rear side surface of the inner box body is provided with heat dissipation holes corresponding to the positions of the heat dissipation fans, and the inner box body is communicated with the outer box body through the heat dissipation holes.
Preferably, the ribs are fixed on the front and rear side surfaces of the outer box body in a welding mode.
Preferably, the inner front side surface of the inner box body is provided with a mounting groove, the heater is mounted in the mounting groove, and the periphery of the heater is fixed on the front side surface of the inner box body through fastening screws.
Preferably, the inner box body is also internally provided with a high-temperature-resistant shock pad which is fixed on the inner bottom surface of the inner box body in an adhesive mode.
Preferably, the control circuit of control panel includes singlechip, relay drive circuit one, relay drive circuit two, relay two and power management circuit, the AD port of singlechip respectively with the signal output part of temperature sensor one and temperature sensor two is connected, the IO mouth of singlechip is connected with the control end of relay one and relay two through relay drive circuit one and relay drive circuit two respectively, this relay one with heater connection, relay two with radiator fan is connected, the IO mouth of singlechip still respectively with heating switch and radiator switch are connected.
Compared with the prior art, the utility model has the beneficial effects that: a multifunctional constant-temperature protection box for a field mutual inductor tester is characterized in that two ribs and second screw holes in the ribs are arranged on the front and back opposite surfaces of an outer box body, a first screw hole is arranged on a peripheral plate on the top of the inner box body corresponding to the second screw hole, the inner box body and the outer box body are fixed by penetrating through the first screw hole and the second screw hole through screws, and a control panel, a heat dissipation switch, a heating switch and other devices are arranged in a cavity between the inner box body and the outer box body;
according to the control circuit, the singlechip, the first relay driving circuit, the second relay driving circuit, the first relay, the second relay, the first temperature sensor and the second temperature sensor which are connected with the singlechip are arranged, and the working states of the first relay and the second relay are controlled by the singlechip, so that the working states of the heater and the cooling fan are automatically controlled, the ambient environment of the tester can be kept in a constant temperature state when the mutual inductor tester in the inner box body carries out field test on the mutual inductor, and the problems that the field test efficiency is influenced due to the fact that the environment temperature causes the abnormity of black screen, incapability of starting up, error distortion and the like of the tester in the using process are solved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the outer case according to the present invention;
FIG. 3 is a schematic side sectional view of the present invention;
FIG. 4 is a schematic cross-sectional front view of the present invention;
FIG. 5 is a schematic block diagram of the control circuit of the present invention.
In the figure: 1. an outer case; 2. an inner box body; 3. a box cover; 4. a power switch; 5. a heat dissipation switch; 6. a heating switch; 7. ribs; 8. a control panel; 9. a heater; 10. a heat radiation fan; 11. a first temperature sensor; 12. a second temperature sensor; 13. a high temperature resistant shock pad; 14. a mutual inductor tester;
201. a first screw hole; 202. heat dissipation holes;
701. a second screw hole; 702. a through hole;
801. a control circuit; 802. a power management circuit; 803. a single chip microcomputer; 804. a first relay driving circuit; 805. a first relay; 806. a second relay drive circuit; 807. and a second relay.
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.
Referring to fig. 1-5, the present invention provides a technical solution: a multifunctional constant-temperature protection box for a field mutual inductor tester comprises an outer box body 1 and an inner box body 2, wherein the inner box body 2 is arranged in a cavity of the outer box body 1, and a box cover 3 is hinged to one side of the top of the outer box body 1;
the opposite surfaces of the front side surface and the back side surface of the outer box body 1 close to the top are respectively provided with ribs 7, the ribs 7 are provided with second screw holes 701 at equal intervals, the position of the outer peripheral plate at the top of the inner box body corresponding to the second screw holes 701 is provided with a first screw hole 201, and the outer box body 1 and the inner box body 2 are fixedly connected with the second screw holes 701 through the first screw holes 201 by screws;
a mounting hole is formed in the rear side surface of the outer box body 1, and a cooling fan 10 is mounted in the mounting hole; the power interface connected with the outside in this embodiment is arranged at the bottom of the rear side of the outer box 1 near the right side (not shown in the figure).
A control panel 8 is arranged on the right side surface of the inner part of the outer box 1, which is close to the top;
a heater 9 is arranged on the front side surface of the inner part of the inner box body 2, and the heating mode of the heater 9 adopts an electric heating wire for heating;
a first temperature sensor 11 and a second temperature sensor 12 are arranged inside the inner box body 2, and the first temperature sensor 11 and the second temperature sensor 12 are respectively arranged at the bottom and the top of the rear side surface of the inner box body 2 and are close to the right side surface of the inner box body 2;
and a mutual inductor tester 14 for field testing is arranged in the cavity of the inner box body 2.
Referring to fig. 1, a power switch 4, a heat dissipation switch 5 and a heating switch 6 are further respectively disposed on the top side plate of the inner box 2, the power switch 4 is disposed on the top side plate of the rear side of the inner box 2 and is close to the right side position, and the heat dissipation switch 5 and the heating switch 6 are respectively disposed on the top side plate of the right side of the inner box 2 and is close to the rear side position; set up two sets of trompils on this interior box 2 right flank top sideboard, heat dissipation switch 5 and heating switch 6 are all embedded in the trompil that corresponds, and heat dissipation switch 5 and heating switch 6's bottom stretch into to the cavity between the right flank of interior box 2 and the right flank of outer box 1.
Referring to fig. 2, a through hole 702 is disposed on the rib 7 corresponding to the power switch 4, and the bottom of the power switch 4 extends below the rib 7 through the through hole 702 and is located in the cavity between the rear side of the inner box 2 and the rear side of the outer box 1.
Referring to fig. 1 and 3, heat dissipation holes 202 are formed in the rear side of the inner case 2 at positions corresponding to the heat dissipation fans 10, and the inner case 2 is communicated with the outer case 1 through the heat dissipation holes 202.
Referring to fig. 2, the ribs 7 are fixed to the front and rear side surfaces of the outer case 1 by welding.
Referring to fig. 3, an installation groove is formed in the front side of the inner box 2, a heater 9 is installed in the installation groove, and the periphery of the heater 9 is fixed to the front side of the inner box 2 by fastening screws.
Referring to fig. 3 and 4, a high temperature resistant shock pad 13 is further disposed in the inner box 2, the high temperature resistant shock pad 13 is fixed on the inner bottom surface of the inner box 2 by gluing, and the high temperature resistant shock pad 13 is made of rubber, and has high temperature resistant, insulating and shock absorbing functions.
Referring to fig. 5, the control circuit 801 of the control board 8 includes a single chip microcomputer 803, a first relay driving circuit 804, a first relay 805, a second relay driving circuit 806, a second relay 807 and a power management circuit 802, an a/D port of the single chip microcomputer 803 is connected to signal output terminals of the first temperature sensor 11 and the second temperature sensor 12, an I/O port of the single chip microcomputer 803 is connected to control terminals of the first relay 805 and the second relay 807 through the first relay driving circuit 804 and the second relay driving circuit 806, the first relay 805 is connected to the heater 9, the second relay 807 is connected to the cooling fan 10, and the I/O port of the single chip microcomputer 803 is further connected to the heating switch 6 and the cooling switch 5.
In this embodiment, the power management circuit 802 is configured to provide working voltages to the single chip microcomputer 803, the first relay driving circuit 804, the first relay 805, the second relay driving circuit 806, the second relay 807, the first temperature sensor 11, and the second temperature sensor 12, where the power management circuit 802, the first relay driving circuit 804, and the second relay driving circuit 806 are all conventional circuits, and details are not repeated herein, and the heater 9 and the cooling fan 10 in this embodiment are respectively powered by the power management circuit 802 through the first relay 805 and the second relay 807.
The control circuit 801 in this embodiment controls the working states of the first relay 805 and the second relay 807 through the single chip 803 by setting the single chip 803, the first relay 804, the second relay 806, the first relay 805, the second relay 807, and the first temperature sensor 11 and the second temperature sensor 12 connected to the single chip 803, so that the automatic control of the working states of the heater 9 and the cooling fan 10 is realized, the mutual inductor tester 14 in the inner box 2 can be ensured to be kept in a constant temperature state around the tester when performing field test on the mutual inductor, and the problem that the field test efficiency of the mutual inductor tester is affected due to the fact that the environment temperature causes the tester to be abnormal such as black screen, incapability of starting up, error distortion and the like in the use process is solved.
The working principle is as follows: the instrument transformer is subjected to field test in winter, and when the field environment temperature is lower than the working temperature of the instrument transformer tester, the periphery of the instrument transformer tester needs to be heated by means of the multifunctional constant-temperature protection box to change the ambient temperature around the instrument transformer tester. Firstly, a mutual inductor tester 14 is placed in an inner box body 2 of a multifunctional constant-temperature protection box, the bottom surface of the mutual inductor tester 14 is in contact with the surface of a high-temperature-resistant shock pad 13, an external power supply is inserted into a power supply interface on the rear side surface of an outer box body 1, a power supply switch 4 is started after the external power supply is switched on, a system is electrified, a heating switch 6 is manually operated, a heater 9 works to heat the inner box body 2, the mutual inductor tester 14 carries out field test work, the temperature in the inner box body 2 is detected through temperature sensors (namely a first temperature sensor 11 and a second temperature sensor 12) arranged in the inner box body 2, when the temperature reaches a constant temperature value set by the system, a single chip microcomputer 803 controls a first relay 805 to be switched off through a first relay driving circuit 804 to stop the work of the heater 9, and when the temperature sensor detects that the temperature in the inner box body 2 is lower than the constant temperature value set by the system, the single chip microcomputer 803 controls the first relay 805 to be closed through the first relay driving circuit 804, the heater 9 works to heat the inner box body 2, and the automatic control of the working state of the heater 9 is realized through the arrangement of the first temperature sensor 11 and the second temperature sensor 12 and the control of the first relay 805 by the single chip microcomputer 803, so that the periphery of a mutual inductor tester 14 in the inner box body 2 can be kept in a constant temperature state when the mutual inductor tester 14 performs field test on the mutual inductor, the field test efficiency of the mutual inductor tester 14 is improved, and the purpose of energy conservation is achieved;
in addition, in summer, due to the fact that the ambient temperature is high, when the mutual inductor tester conducts field testing on the mutual inductor, the heat dissipation fan 10 arranged on the outer box body 1 of the multifunctional constant-temperature protection box can conduct heat dissipation treatment on the periphery of the mutual inductor tester 14 in time, and damage to devices of the mutual inductor tester due to overhigh temperature is avoided. When the inner box body 2 of the multifunctional constant temperature protection box is subjected to heat dissipation treatment, the heat dissipation switch 5 is started, the inner temperature of the box body detected by a temperature sensor arranged in the inner box body 2 reaches a constant temperature value set by a system, the singlechip 803 controls the relay II 807 to be disconnected through the relay drive circuit II 806, the heat dissipation fan 10 stops working, when the temperature sensor detects that the temperature in the inner box body 2 is higher than the constant temperature value set by the system, the singlechip 803 controls the relay II 807 to be closed through the relay drive circuit II 806, the heat dissipation fan 10 works to perform heat dissipation treatment on the inner box body 2, the automatic control of the working state of the heat dissipation fan 10 is realized through the arrangement of the temperature sensor I11, the temperature sensor II 12 and the control of the relay II 806 by the singlechip 803, so that the periphery of a mutual inductor tester 14 in the inner box body 2 can be kept in a constant temperature state when the mutual inductor is subjected to field test, the field test efficiency of the mutual inductor tester is improved, and the purpose of energy conservation is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a multi-functional constant temperature protective housing for on-spot mutual-inductor tester which characterized in that: the box comprises an outer box body and an inner box body, wherein the inner box body is arranged in a cavity of the outer box body, and one side of the top of the outer box body is hinged with a box cover;
the opposite surfaces of the front side surface and the back side surface of the outer box body, which are close to the top, are respectively provided with ribs, the ribs are provided with second screw holes at equal intervals, the position of the outer peripheral plate at the top of the inner box body, which corresponds to the second screw holes, is provided with a first screw hole, and the outer box body and the inner box body are fixedly connected through the first screw hole and the second screw hole by screws;
a mounting hole is formed in the rear side face of the outer box body, and a cooling fan is mounted in the mounting hole;
a control panel is arranged on the right side surface of the inner part of the outer box body, which is close to the top;
a heater is arranged on the front side surface inside the inner box body;
a first temperature sensor and a second temperature sensor are arranged inside the inner box body, and the first temperature sensor and the second temperature sensor are respectively arranged at the bottom and the top of the rear side surface of the inner box body and are close to the right side surface of the inner box body;
and a mutual inductor tester for field test is placed in the cavity of the inner box body.
2. The multifunctional constant-temperature protection box for the field transformer tester according to claim 1, is characterized in that: still be provided with switch, heat dissipation switch and heating switch on the top sideboard of interior box respectively, switch sets up including on the top sideboard of the trailing flank of box and is close to right side position, heat dissipation switch and heating switch set up including on the sideboard of the right flank of box and are close to rear side position respectively.
3. The multifunctional constant-temperature protection box for the field transformer tester according to claim 1, is characterized in that: the rear side surface of the inner box body is provided with heat dissipation holes corresponding to the positions of the heat dissipation fans, and the inner box body is communicated with the outer box body through the heat dissipation holes.
4. The multifunctional constant-temperature protection box for the field transformer tester according to claim 1, is characterized in that: the ribs are fixed on the front side and the rear side of the outer box body in a welding mode.
5. The multifunctional constant-temperature protection box for the field transformer tester according to claim 1, is characterized in that: the heater is characterized in that a mounting groove is formed in the front side face of the inner box body, the heater is mounted in the mounting groove, and the periphery of the heater is fixed to the front side face of the inner box body through fastening screws.
6. The multifunctional constant-temperature protection box for the field transformer tester according to claim 1, is characterized in that: the inner box body is also internally provided with a high-temperature-resistant shock pad which is fixed on the inner bottom surface of the inner box body in an adhesive mode.
7. The multifunctional constant-temperature protection box for the field transformer tester according to claim 2, is characterized in that: the control circuit of the control panel comprises a single chip microcomputer, a first relay drive circuit, a first relay, a second relay drive circuit, a second relay and a power management circuit, wherein an A/D port of the single chip microcomputer is respectively connected with signal output ends of the first temperature sensor and the second temperature sensor, an I/O port of the single chip microcomputer is respectively connected with control ends of the first relay and the second relay through the first relay drive circuit and the second relay drive circuit, the first relay is connected with the heater, the second relay is connected with the cooling fan, and the I/O port of the single chip microcomputer is also respectively connected with the heating switch and the cooling switch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121396663.1U CN215526086U (en) | 2021-06-23 | 2021-06-23 | A multi-functional constant temperature protective housing for on-spot mutual-inductor tester |
| JP2022000434U JP3237230U (en) | 2021-06-23 | 2022-02-15 | Multi-functional constant temperature protection box for field instrument transformer testers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121396663.1U CN215526086U (en) | 2021-06-23 | 2021-06-23 | A multi-functional constant temperature protective housing for on-spot mutual-inductor tester |
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| Publication Number | Publication Date |
|---|---|
| CN215526086U true CN215526086U (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121396663.1U Active CN215526086U (en) | 2021-06-23 | 2021-06-23 | A multi-functional constant temperature protective housing for on-spot mutual-inductor tester |
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| Country | Link |
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| JP (1) | JP3237230U (en) |
| CN (1) | CN215526086U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116840521B (en) * | 2023-07-12 | 2023-12-05 | 保定源创电力科技有限公司 | Resistance integrated testing device capable of being compatible with multiple types |
| CN117082797B (en) * | 2023-10-18 | 2023-12-29 | 天津华宇恒通光电技术有限公司 | Comprehensive tester for data network |
| CN117554859B (en) * | 2023-11-14 | 2024-04-09 | 国网山东省电力公司夏津县供电公司 | Intelligent detection device for transformer |
-
2021
- 2021-06-23 CN CN202121396663.1U patent/CN215526086U/en active Active
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2022
- 2022-02-15 JP JP2022000434U patent/JP3237230U/en active Active
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| JP3237230U (en) | 2022-04-22 |
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