CN111766538A - Transformer iron core grounding detection device - Google Patents
Transformer iron core grounding detection device Download PDFInfo
- Publication number
- CN111766538A CN111766538A CN202010802278.6A CN202010802278A CN111766538A CN 111766538 A CN111766538 A CN 111766538A CN 202010802278 A CN202010802278 A CN 202010802278A CN 111766538 A CN111766538 A CN 111766538A
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- CN
- China
- Prior art keywords
- handle
- detection device
- hinge
- transformer core
- hinged
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- 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
-
- 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
- G01R1/0425—Test clips, e.g. for IC's
-
- 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
Abstract
The invention discloses a transformer iron core grounding detection device which comprises two clamp arms, an installation frame, a connecting assembly, a sleeve and a handle, wherein one ends of the two clamp arms are hinged with the installation frame, the other ends of the two clamp arms can be connected to form an annular structure, one end of the connecting assembly is connected with the two clamp arms, the other end of the connecting assembly is hinged with the handle, one end of the sleeve is connected with the installation frame, the handle is arranged at the other end of the sleeve and partially extends out of the sleeve, and the non-end part of the handle is hinged with the sleeve. The transformer core grounding detection device drives the connecting component through the handle, and the connecting component opens the two clamp arms hinged on the mounting frame for the grounding wire to be put in, so that the grounding wire is detected. The handle is connected with the clamp arm through the connecting assembly, so that the distance between the handle and the clamp arm is long, operation and maintenance personnel do not need to be close to a grounding wire for detection operation, and the safety of the detection process is improved.
Description
Technical Field
The invention relates to the technical field of electric power operation and maintenance, in particular to a transformer iron core grounding detection device.
Background
When the transformer operates normally, the iron core must have a certain point for reliable grounding. When the internal fault of the transformer causes poor grounding or no grounding of the iron core, the suspension voltage of the iron core to the ground causes intermittent breakdown discharge of the iron core to the ground, and when the iron core is grounded at two or more points, non-uniform potential between the iron cores forms circulation between the grounding points, and the multipoint grounding heating fault of the iron core is caused. When the temperature is serious, the local temperature rise of the iron core is increased, light gas acts, and even the accident of tripping caused by heavy gas acts can be caused. Therefore, transformer core grounding current detection is required in the routine maintenance work of the transformer substation. At present in detecting transformer core ground connection, need the manual work to use the clip-on ammeter to be close to the earth connection and go to detect usually, and the static numerical value of reading of angle is measured in the adjustment many times, and fortune dimension personnel often concentrate on the exactness of numerical value, and neglect sharp-pointed hard things such as peripheral fire sprinkler, transformer shell, easily take place injury incident or fall down. Because the connection point of the grounding wire has an exposed metal part, if the inside of the transformer fails, the detection means is dangerous, and the human body is easy to have a false electric shock accident, so that a convenient and safe detection mode is needed to complete the detection.
Disclosure of Invention
The invention aims to provide a transformer iron core grounding detection device which can realize the detection of a grounding wire at a longer distance and improve the safety of a detection process.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a transformer core ground connection detection device, including two tong arms, installation frame, coupling assembling, sleeve pipe and handle, two the one end of tong arm all with the installation frame is articulated, two the other end joinable of tong arm forms annular structure, coupling assembling's one end and two the tong arm is connected, coupling assembling's the other end with the handle is articulated, sheathed tube one end with install the frame connection, the handle sets up sheathed tube other end and part stretch out outside the sleeve pipe, the non-tip of handle with the sleeve pipe is articulated.
As a preferable scheme of the present invention, the clamp arm includes a clamp arm body, a hinge portion and a connecting portion, the clamp arm body is arc-shaped, the hinge portion and the connecting portion are both connected to the clamp arm body, the mounting frame is provided with a hinge lug, the hinge portion is hinged to the hinge lug, and the connecting assembly is hinged to the connecting portion.
In a preferred embodiment of the present invention, a plurality of convex teeth are disposed on the sides of the two hinge portions close to each other, and the two hinge portions are engaged with each other.
As a preferable scheme of the present invention, the connection assembly includes two hinge rods, a connection seat and an extension rod, one end of each of the hinge rods and the extension rod is connected to the connection seat, the connection seat is disposed in the installation frame, the other end of each of the hinge rods is hinged to the connection part, and the other end of each of the extension rods is located inside the sleeve and hinged to one end of the handle.
As a preferable mode of the present invention, a through hole is opened at a non-end portion of the handle, and the handle is hinged to the casing by a hinge shaft passing through the through hole.
As a preferable scheme of the present invention, the mounting frame is provided with a notch groove for allowing the connecting portion and the hinge lever to move.
As a preferable scheme of the present invention, the transformer core ground detection device further includes a spring, one end of the spring is connected to one of the caliper arm bodies, and the other end of the spring is connected to the other caliper arm body.
As a preferable scheme of the present invention, a detection mechanism is disposed in one of the caliper arms, a control panel is disposed at an end of the sleeve away from the mounting frame, and the detection mechanism is electrically connected to the control panel.
As a preferable scheme of the present invention, the control panel includes a power amplifying circuit, an a/D converting circuit, a single chip microcomputer, a correcting circuit, and a display screen, which are electrically connected in sequence, the power amplifying circuit amplifies a signal detected by the detecting mechanism and transmits the amplified signal to the a/D converting circuit, the a/D converting circuit converts an analog signal into a digital signal and transmits the digital signal to the single chip microcomputer, and the correcting circuit corrects the signal transmitted by the single chip microcomputer and displays information of current in a ground wire on the display screen.
As a preferable scheme of the present invention, a battery is disposed inside the sleeve, and the battery is disposed at one end close to the control panel.
The invention has the beneficial effects that:
the transformer core grounding detection device drives the connecting component through the handle, and the connecting component opens the two clamp arms hinged on the mounting frame for the grounding wire to be put in, so that the grounding wire is detected. The handle is connected with the clamp arm through the connecting assembly, so that the distance between the handle and the clamp arm is long, operation and maintenance personnel do not need to be close to a grounding wire for detection operation, and the safety of the detection process is improved.
Drawings
Fig. 1 is a schematic front view of a transformer core ground detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of FIG. 1 with the mounting frame and sleeve removed;
FIG. 3 is a schematic front view of a jawarm in accordance with an embodiment of the present invention;
FIG. 4 is a perspective view of a jawarm and mounting frame of an embodiment of the present invention;
fig. 5 is a perspective view of the mounting frame of fig. 4.
In the figure:
1. a clamp arm; 11. a clamp arm body; 12. a hinge portion; 121. a convex tooth; 13. a connecting portion; 2. a mounting frame; 21. a hinge ear; 22. a notch groove; 3. a connecting assembly; 31. a hinged lever; 32. a connecting seat; 33. an extension pole; 4. a sleeve; 5. a handle; 6. hinging a shaft; 7. a spring; 8. a control panel.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the word "over" a first feature or feature in a second feature may include the word "over" or "over" the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under" a second feature may include a first feature that is directly under and obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include one or more of that feature.
As shown in fig. 1, the transformer core ground detection device of this embodiment includes two tong arms 1, installation frame 2, coupling assembling 3, sleeve pipe 4 and handle 5, the one end of two tong arms 1 all is articulated with installation frame 2, the other end of two tong arms 1 can connect and form the loop configuration, the one end of coupling assembling 3 is connected with two tong arms 1, the other end of coupling assembling 3 is articulated with handle 5, the one end of sleeve pipe 4 is connected with installation frame 2, handle 5 sets up at the other end of sleeve pipe 4 and partly stretches out outside sleeve pipe 4, the non-tip of handle 5 is articulated with sleeve pipe 4.
The transformer core grounding detection device of the embodiment drives the connecting assembly 3 through the handle 5, and the connecting assembly 3 opens the two tong arms 1 hinged on the mounting frame 2 for the grounding wire (not shown in the figure) to be put in, so that the grounding wire detection is realized. The handle 5 is connected with the forceps arm 1 through the connecting component 3, so that the distance between the handle 5 and the forceps arm 1 is long, operation and maintenance personnel do not need to be close to a grounding wire for detection operation, and the safety of the detection process is improved.
As shown in fig. 3 and 5, preferably, the forceps arm 1 includes a forceps arm body 11, a hinge portion 12 and a connecting portion 13, the forceps arm body 11 is arc-shaped, the hinge portion 12 and the connecting portion 13 are both connected to the forceps arm body 11, the mounting frame 2 is provided with a hinge lug 21, the hinge portion 12 is hinged to the hinge lug 21, and the connecting assembly 3 is hinged to the connecting portion 13. The two tong arm bodies 11 can be both semicircular, or can be in a large-small form as in the illustrated embodiment, and only when the two tong arm bodies 11 are closed, an annular loop can be formed, the tong arm bodies 11 include iron cores (not shown in the figure) and insulating layers (not shown in the figure) wrapped outside the iron cores, the shape of the iron cores outside the iron cores is consistent with that of the tong arm bodies 11, when the two tong arm bodies 11 are closed, the two iron cores are connected to form the annular loop, the current in the exposed grounding wire can generate induced current in the annular loop, and the characteristics of the current in the grounding wire can be known by detecting the induced current, so that whether the transformer is normally grounded or not can be judged.
Further, a plurality of convex teeth 121 are arranged on the side where the two hinge parts 12 are close to each other, and the two hinge parts 12 are engaged with each other. Therefore, the two hinge parts 12 can synchronously rotate, the two clamp arm bodies 11 can also be synchronously opened, and the single clamp arm body 11 can enable the grounding wire to smoothly enter without opening a larger angle, so that the handle 5 does not need to rotate by a larger angle, and operation and maintenance personnel can conveniently operate the clamp arm.
Preferably, as shown in fig. 2, the connecting assembly 3 includes two hinge rods 31, a connecting seat 32 and an extension rod 33, one ends of the hinge rods 31 and the extension rod 33 are connected to the connecting seat 32, the connecting seat 32 is disposed in the mounting frame 2, the other end of the hinge rod 31 is hinged to the connecting part 13, and the other end of the extension rod 33 is located inside the sleeve 4 and hinged to one end of the handle 5. When the handle 5 is rotated clockwise, the extension rod 33 moves downward, the extension rod 33 drives the connecting seat 32 to move downward, the connecting seat 32 pulls the hinge rod 31 to move downward, the hinge rod 31 applies downward pulling force to the connecting part 13, and the moment generated by the pulling force rotates the clamp arm body 11 to open.
As shown in fig. 1 and 2, in particular, a non-end portion of the handle 5 is provided with a through hole (not shown), and the handle 5 is hinged to the casing 4 through a hinge shaft 6 passing through the through hole. The extension rod 33 is wrapped by the sleeve 4 to play a certain protection role, and a fixed position is provided for the hinge shaft 6 to enable the handle 5 to rotate around the hinge shaft 6.
Preferably, as shown in fig. 5, the mounting frame 2 is provided with a notch 22 for moving the connecting portion 13 and the hinge rod 31, and the notch 22 is used to prevent the connecting portion 13 or the hinge rod 31 from interfering with the mounting frame 2, so that the clamp arm 1 can be opened and closed normally.
As shown in fig. 2 and 3, in some embodiments, the transformer core grounding detection device further includes a spring 7, one end of the spring 7 is connected to one of the caliper arm bodies 11, and the other end of the spring 7 is connected to the other caliper arm body 11. When the two forceps arms 1 are opened, the handles 5 need to be rotated to overcome the elasticity of the springs 7, when the two forceps arms 1 need to be closed, the handles 5 only need to be loosened, the two forceps arms 1 can be automatically closed under the action of the springs 7, the handles 5 do not need to be rotated reversely by operation and maintenance personnel, and operation is further facilitated.
As shown in fig. 1, a detection mechanism (not shown) is preferably disposed in one of the jawarms 1, and a control panel 8 is disposed at an end of the sleeve 4 away from the mounting frame 2, and the detection mechanism is electrically connected to the control panel 8. Because fortune dimension personnel need operating handle 5, set up control panel 8 near handle 5, conveniently read the information on control panel 8.
Further, the control panel 8 includes a power amplifying circuit, an a/D conversion circuit, a single chip microcomputer, a correction circuit and a display screen which are electrically connected in sequence, the power amplifying circuit amplifies a signal detected by the detection mechanism and transmits the amplified signal to the a/D conversion circuit, the a/D conversion circuit converts an analog signal into a digital signal and transmits the digital signal to the single chip microcomputer, and the correction circuit corrects the signal transmitted by the single chip microcomputer and displays information of current in the ground wire on the display screen.
Preferably, a battery (not shown) is disposed inside the casing 4, and the battery is disposed at one end near the control panel 8. Set up the battery near control panel 8, shorten the length of power supply line on the one hand, on the other hand makes sleeve pipe 4 keep away from the counter weight of 2 one ends of installation frame increase, because what the fortune dimension personnel held also is the one end that sleeve pipe 4 kept away from installation frame 2, the distribution of weight is more reasonable, avoids the condition of heavy foot to appear, makes things convenient for fortune dimension personnel to operate.
Reference throughout this specification to the description of the terms "preferred," "further," or the like, as used in describing preferred embodiments of the present invention, means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above examples are only intended to illustrate the details of the invention, which is not limited to the above details, i.e. it is not intended that the invention must be implemented in such detail. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The utility model provides a transformer core ground connection detection device, its characterized in that includes two tong arms, installation frame, coupling assembling, sleeve pipe and handle, two the one end of tong arm all with the installation frame is articulated, two the other end joinable of tong arm forms ring structure, coupling assembling's one end and two the tong arm is connected, coupling assembling's the other end with the handle is articulated, sheathed tube one end with the installation frame is connected, the handle sets up sheathed tube other end and part stretch out outside the sleeve pipe, the non-tip of handle with the sleeve pipe is articulated.
2. The transformer core grounding detection device according to claim 1, wherein the clamp arm includes a clamp arm body, a hinge portion and a connection portion, the clamp arm body is arc-shaped, the hinge portion and the connection portion are both connected to the clamp arm body, the mounting frame is provided with a hinge lug, the hinge portion is hinged to the hinge lug, and the connection assembly is hinged to the connection portion.
3. The transformer core grounding detection device according to claim 2, wherein a plurality of convex teeth are arranged on the sides of the two hinge portions close to each other, and the two hinge portions are engaged with each other.
4. The transformer core grounding detection device according to claim 2, wherein the connection assembly comprises two hinge rods, a connection seat and an extension rod, one end of each of the hinge rods and one end of each of the extension rods are connected with the connection seat, the connection seat is disposed in the mounting frame, the other end of each of the hinge rods is hinged with the connection part, and the other end of each of the extension rods is located inside the corresponding sleeve and hinged with one end of the corresponding handle.
5. The transformer core ground detection device according to claim 4, wherein a through hole is formed at a non-end portion of the handle, and the handle is hinged to the sleeve through a hinge shaft passing through the through hole.
6. The transformer core ground detection device of claim 4, wherein the mounting frame is provided with a notch for movement of the connecting portion and the hinge rod.
7. The transformer core ground detection device of claim 2, further comprising a spring, wherein one end of the spring is connected to one of the caliper arm bodies, and the other end of the spring is connected to the other caliper arm body.
8. The transformer core grounding detection device according to claim 1, wherein a detection mechanism is disposed in one of the clamp arms, a control panel is disposed at an end of the sleeve away from the mounting frame, and the detection mechanism is electrically connected to the control panel.
9. The transformer core ground detection device according to claim 8, wherein the control panel comprises a power amplification circuit, an A/D conversion circuit, a single chip microcomputer, a correction circuit and a display screen which are electrically connected in sequence, the power amplification circuit amplifies a signal detected by the detection mechanism and transmits the signal to the A/D conversion circuit, the A/D conversion circuit converts an analog signal into a digital signal and transmits the digital signal to the single chip microcomputer, and the correction circuit corrects the signal transmitted by the single chip microcomputer and displays information of current in a ground wire on the display screen.
10. The transformer core ground detection device of claim 8, wherein a battery is disposed inside the sleeve, the battery being disposed at an end near the control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010802278.6A CN111766538A (en) | 2020-08-11 | 2020-08-11 | Transformer iron core grounding detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010802278.6A CN111766538A (en) | 2020-08-11 | 2020-08-11 | Transformer iron core grounding detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111766538A true CN111766538A (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010802278.6A Pending CN111766538A (en) | 2020-08-11 | 2020-08-11 | Transformer iron core grounding detection device |
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| Country | Link |
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| CN (1) | CN111766538A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206638764U (en) * | 2017-04-05 | 2017-11-14 | 黄理龙 | Earthing detection equipment |
| CN206671425U (en) * | 2017-04-24 | 2017-11-24 | 深圳市鸿泰安全技术有限公司 | A kind of open-and-close mechanism of pliers-shape earthing resistance instrument |
| CN207067251U (en) * | 2017-08-15 | 2018-03-02 | 无锡建设监理咨询有限公司 | A kind of pincerlike earth resistance tester |
| US20180299482A1 (en) * | 2017-04-17 | 2018-10-18 | Rosemount Aerospace Inc. | Apparatus and method for packaging, handling or testing of sensors |
| CN208297612U (en) * | 2018-07-06 | 2018-12-28 | 广东电网有限责任公司 | Smart grounding measures smart host and grounding resistance detection system |
| CN110176735A (en) * | 2019-06-25 | 2019-08-27 | 国网冀北电力有限公司廊坊供电公司 | Locking device is buckled in a kind of plug of silicon rubber insulation cover |
-
2020
- 2020-08-11 CN CN202010802278.6A patent/CN111766538A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206638764U (en) * | 2017-04-05 | 2017-11-14 | 黄理龙 | Earthing detection equipment |
| US20180299482A1 (en) * | 2017-04-17 | 2018-10-18 | Rosemount Aerospace Inc. | Apparatus and method for packaging, handling or testing of sensors |
| CN206671425U (en) * | 2017-04-24 | 2017-11-24 | 深圳市鸿泰安全技术有限公司 | A kind of open-and-close mechanism of pliers-shape earthing resistance instrument |
| CN207067251U (en) * | 2017-08-15 | 2018-03-02 | 无锡建设监理咨询有限公司 | A kind of pincerlike earth resistance tester |
| CN208297612U (en) * | 2018-07-06 | 2018-12-28 | 广东电网有限责任公司 | Smart grounding measures smart host and grounding resistance detection system |
| CN110176735A (en) * | 2019-06-25 | 2019-08-27 | 国网冀北电力有限公司廊坊供电公司 | Locking device is buckled in a kind of plug of silicon rubber insulation cover |
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Application publication date: 20201013 |
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