CN107807286B - Cake-type coil turns detection device - Google Patents
Cake-type coil turns detection device Download PDFInfo
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- CN107807286B CN107807286B CN201711122898.XA CN201711122898A CN107807286B CN 107807286 B CN107807286 B CN 107807286B CN 201711122898 A CN201711122898 A CN 201711122898A CN 107807286 B CN107807286 B CN 107807286B
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- 238000001514 detection method Methods 0.000 title claims abstract description 65
- 235000012771 pancakes Nutrition 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims description 15
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 230000006854 communication Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Coils Of Transformers For General Uses (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a pancake coil turns detection device, which belongs to the technical field of transformers and comprises a counter, a supporting connecting plate and a contact assembly, wherein the counter and the contact assembly are respectively and fixedly connected with two ends of the supporting connecting plate, and the counter is connected with the contact assembly through a connecting wire. According to the pancake coil turn number detection device provided by the invention, the counter is used for recording the change electric signal generated when the contact assembly at one end of the detection device passes through the protruding part of the coil wire, so that the coil turn number can be rapidly and accurately detected, and the coil turn number detection working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a pancake coil turn number detection device.
Background
The coil is the most important component of the transformer, after the winding of the coil is completed, whether the coil is in a passage, short-circuited or correct in number of turns is usually detected, if the problem is not found in advance, the problem is generated after the sleeving is completed, and the iron is required to be removed by pulling out the package, and the like. The measurement of the number of turns of the coil is always a difficult problem in coil detection, if the number of turns of the coil is the same as the number of turns rotated by the winding former during winding, the coil can be detected directly from the installation of the turns recorder, but errors can occur in the case of misoperation of manual operation and counter operation during winding, and errors can occur in the number of turns rotated by the winding former and the number of turns of the coil, so that the detection of the number of turns of the coil is generally required after the winding of the coil is completed.
At present, the detection of the number of turns of the coil is completed by adopting a manual number turn counting method. When the number of turns is counted manually, the positions of the eyes of people are nearly parallel to the number of turns of the coil because the coil oil gap is smaller, so that the accurate counting of the number of turns of the coil is very difficult. Most transformer manufacturers use a prism and then image the number of turns of the coil by illuminating between the coil wires, but also manually visually inspecting the number of turns of the coil wires.
Disclosure of Invention
The invention aims to solve the technical problem that the work efficiency of detecting the number of turns of the pancake coil is low in the prior art, and provides a device and a method for detecting the number of turns of the pancake coil by utilizing the principle that a switching device generates an electric signal to count.
In order to solve the technical problems, the invention adopts the following technical scheme: the cake-type coil turns detection device comprises a counter, a support connecting plate and a contact assembly, wherein the counter and the contact assembly are respectively and fixedly connected with two ends of the support connecting plate; the counter is connected with the contact assembly through a connecting wire.
Further, the contact assembly includes a first contact, a second contact, and a contact connection mechanism; the first contact and the second contact can be connected or disconnected through a contact connecting mechanism.
Further, the first contact and the second contact are in a strip-shaped or sheet-shaped structure, and the length of the first contact is larger than that of the second contact.
Further, the first contact and the second contact are members bent downward in the horizontal direction.
Further, the first contact and the second contact are members vertically downward in a vertical direction.
Further, the device also comprises a contact pressing plate for pressing the first contact and the second contact upwards along the horizontal direction; the length of the contact pressing plate is not smaller than that of the supporting connecting plate.
Further, the connecting wire is fixed at one side of the support connecting plate.
Further, the length of the supported connecting plate is 300mm-400mm, and the thickness is 0.5mm-1mm; the height of the first contact and the second contact in the vertical direction is 2mm-4mm.
Further, the contact connection mechanism is fixedly connected with the first contact or the second contact.
Further, the contact connection mechanism is conductive silica gel.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in: according to the pancake coil turn number detection device provided by the embodiment of the invention, the counter is used for recording the change electric signal generated when the contact assembly at one end of the detection device passes through the coil wire, so that the coil turn number can be rapidly and accurately detected, and the coil turn number detection working efficiency is improved.
Drawings
Fig. 1 is a schematic top view of a pancake coil turn detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a front view of a pancake coil turn detection apparatus according to an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a contact assembly of a pancake coil turn detection device according to an embodiment of the present invention;
fig. 4 is an enlarged schematic diagram of a contact assembly of a pancake coil turn detection device according to a second embodiment of the present invention;
in the figure: 1. counter 2, support connecting plate, 3, contact assembly, 4, connecting wire, 5, first contact, 6, second contact, 7, contact coupling mechanism, 8, contact clamp plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
The cake-type coil turns detection device comprises a counter, a support connecting plate and a contact assembly, wherein the counter and the contact assembly are respectively and fixedly connected with two ends of the support connecting plate; the counter is connected with the contact assembly through a connecting wire.
According to the pancake coil turn number detection device provided by the embodiment of the invention, the counter is used for recording the change electric signal generated when the contact assembly at one end of the detection device passes through the coil wire, so that the coil turn number can be rapidly and accurately detected, and the coil turn number detection working efficiency is improved.
Further, the contact assembly includes a first contact, a second contact, and a contact connection mechanism; the first contact and the second contact can be connected or disconnected through a contact connecting mechanism.
Further, the first contact and the second contact are in a strip-shaped or sheet-shaped structure, and the length of the first contact is larger than that of the second contact.
Further, the first contact and the second contact are members bent downward in the horizontal direction.
Further, the first contact and the second contact are members vertically downward in a vertical direction.
Further, the device also comprises a contact pressing plate for pressing the first contact and the second contact upwards along the horizontal direction; the length of the contact pressing plate is not smaller than that of the supporting connecting plate.
Further, the connecting wire is fixed at one side of the support connecting plate.
Further, the length of the supported connecting plate is 300mm-400mm, and the thickness is 0.5mm-1mm; the height of the first contact and the second contact in the vertical direction is 2mm-4mm.
Further, the contact connection mechanism is fixedly connected with the first contact or the second contact.
Further, the contact connection mechanism is conductive silica gel.
Example 1
Referring to fig. 1 to 3, a description will now be given of a pancake coil turn detection apparatus according to a first embodiment of the present invention. The pancake coil turns detection device comprises a counter 1, a support connection plate 2 and a contact assembly 3. The counter 1 and the contact component 3 are respectively and fixedly connected with the two ends of the supporting connection plate 2, and the counter 1 and the contact component 3 are connected through a connection wire 4. The contact assembly 3 comprises two contacts, a first contact 5, a second contact 6 and a contact connection 7 for electrically conductive connection of the two contacts.
Preferably, the first contact 5 and the second contact 6 are in a steel strip structure which is bent downwards along the horizontal direction, the contact is deformed after being contacted with the protruding part of the coil wire by utilizing the elasticity of the bent steel sheet, and the contact is recovered after being separated from the coil wire. Two connecting wires 4 of positive electrode and negative electrode are led out from the counter 1, the two connecting wires 4 are respectively connected with the first contact 5 and the second contact 6, the connecting sequence can be exchanged, the negative electrode wire is connected with the first contact 5, the positive electrode is connected with the second contact 6, and the connecting wire 4 is fixed on the upper side of the supporting connecting plate 2. The distance between the two contacts can be adjusted along with the width of the coil wire and is smaller than the width of the coil wire, so that the two contacts can generate stable and clear change electric signals. The first contact 5 has a length greater than the second contact 6. The contact connection mechanism 7 is a flexible conductive member such as conductive silica gel, and can reduce unnecessary signals generated by vibration of the contacts.
Preferably, the conductive silicone is fixed at one end of the first contact 5, and the second contact 6 is electrically connected to the first contact 5 through the conductive silicone. In the unused state, the first contact 5 and the second contact 6 are connected together through conductive silica gel, and the counter 1, the first contact 5, the second contact 6 and the conductive silica gel form a normally closed loop. When in use, as the first contact 5 and the second contact 6 are respectively contacted with the protruding parts of the coil wire, the first contact 5 and the second contact 6 are separated, so that a loop formed by the counter 1, the first contact 5, the second contact 6 and the conductive silica gel is disconnected; when both contacts pass through the coil wire protruding portion, the first contact 5 and the second contact 6 return to the connected state due to their own elasticity, so that the loop formed by the counter 1, the first contact 5, the second contact 6 and the conductive silicone is again communicated. In the process that the two contacts are communicated to and separated from each other and are communicated again, a change of an electric signal is generated, the counter 1 records the changed electric signal, and the detection of the number of turns of the coil wire is completed once.
Preferably, the pancake coil turn detection device provided in this embodiment further includes a contact pressure plate 8. Since the pancake coil oil gap is small, typically less than 5mm, the bent contact can be flattened upward in the horizontal direction using the contact press plate 8. So that the turn detection device can more easily enter the coil start position inside the coil and start the turn detection.
Preferably, the length of the support connection plate 2 is 300mm, so that the pancake coil turns detection device can ensure that the contact assembly 3 is positioned at the beginning of the coil inside the coil during detection, and the counter 1 is positioned at the outer side of the coil. Since the coil oil gap is generally small, the thickness of the support connection plate 2 is 0.5mm, the height in the vertical direction of the first contact 5 and the second contact 6 is 2mm, and the thickness of the first contact 5 and the second contact 6 is 0.1mm.
Preferably, the counter 1 is an adder counter with a zero clearing function. After the cake-type coil turn number detection device completes detection work of one coil turn number, an operator can clear the data recorded through detection by using a clear function of a counter, so that next coil turn number detection work is facilitated.
The specific working process is as follows:
first, the first contact 5 and the second contact 6 are flattened upward in the horizontal direction using the contact presser 8, and the pancake coil turns detecting device is extended into the coil start inside the coil along the oil gap. Next, the contact pressure plate 8 is withdrawn, and the first contact 5 and the second contact 6 are brought into contact with the coil wire protruding portions. Then, the counter 1 switch is turned on, and the detection device is pulled out from the inside of the coil. In the extraction process, the first contact 5 and the second contact 6 are separated through the protruding parts of the coil wires respectively; when both contacts pass through the coil wire protruding portion, the first contact 5 and the second contact 6 return to the connected state due to their own elasticity. A change in the primary electrical signal is generated during the communication to the separation and the re-communication through the two contacts, and the counter 1 records the changed signal. After the detection device is repeatedly opened and closed, the detection of the number of turns of the coil is completed until the detection device is completely pulled out of the coil. In the process of extracting the detection device, the extracting speed is not too high, so that the separation and communication processes of the two contacts are clear, and the counter 1 obtains accurate change electric signals. Finally, after the detection device is completely extracted from the coil, the numbers recorded on the counter 1 are recorded, and the counter is cleared.
According to the pancake coil turn number detection device provided by the embodiment, the characteristic that the steel bending contact of the contact assembly 3 has elastic recovery capability is utilized, the separation and communication of the first contact 5 and the second contact 6 are recorded, a change electric signal is generated, and the turn number of the coil is rapidly and accurately detected. The work efficiency of coil turns detection is improved.
Example two
Referring to fig. 4, the pancake coil turn detection apparatus in the present embodiment includes a counter 1, a support connection plate 2, and a contact assembly 3. The counter 1 and the contact component 3 are respectively and fixedly connected with the two ends of the supporting connection plate 2, and the counter 1 and the contact component 3 are connected through a connection wire 4. The contact assembly 3 comprises two contacts, a first contact 5, a second contact 6 and a contact connection 7 for electrically conductive connection of the two contacts.
Preferably, the first contact 5 and the second contact 6 are steel sheet members downward in the vertical direction, and the contacts are deformed after being contacted with the protruding parts of the coil wires by utilizing the elasticity of the steel materials, and the contacts are recovered after being separated from the coil wires. Two connecting wires 4 of positive electrode and negative electrode are led out from the counter 1, the two connecting wires 4 are respectively connected with the first contact 5 and the second contact 6, the connecting sequence can be exchanged, the negative electrode wire is connected with the first contact 5, the positive electrode is connected with the second contact 6, and the connecting wire 4 is fixed on the upper side of the supporting connecting plate 2. The distance between the two contacts can be adjusted along with the width of the coil wire and is smaller than the width of the coil wire, so that the two contacts can generate stable and clear change electric signals. The first contact 5 is 4mm in length, the second contact 6 is 2mm in length, and the thicknesses of the first contact 5 and the second contact 6 are 0.1mm. The contact connection mechanism 7 is a flexible conductive member such as conductive silica gel, and can reduce unnecessary signals generated by vibration of the contacts. The length of the support connecting plate 2 is 400mm, and the thickness is 1mm.
Preferably, the counter 1 is an adder counter with a zero clearing function. After the cake-type coil turn number detection device completes detection work of one coil turn number, an operator can clear the data recorded through detection by using the clear function of the counter 1, so that next coil turn number detection work is facilitated.
The specific working process is as follows:
firstly, the pancake coil turns detection device stretches into a coil starting position inside the coil along the oil gap. The process of extending into the coil is as slow as possible, so that the problem of damage to the contact caused by the contact touching the coil wire is prevented. Next, the counter 1 switch is turned on, and the detection device is pulled out from the inside of the coil. In the extraction process, the first contact 5 and the second contact 6 are separated through the protruding parts of the coil wires respectively; when both contacts pass through the coil wire protruding portion, the first contact 5 and the second contact 6 return to the connected state due to their own elasticity. By the two contacts being separated from the communication, a change in the primary electrical signal is produced during the communication, and the counter 1 records the changed signal. After the detection device is repeatedly opened and closed, the detection of the number of turns of the coil is completed until the detection device is completely pulled out of the coil. In the process of extracting the detection device, the extracting speed is not too high, so that the separation and communication of the two contacts are clear, and the counter 1 obtains accurate change electric signals. Finally, after the detection device is completely extracted from the coil, the numbers recorded on the counter 1 are recorded, and the counter 1 is cleared.
According to the pancake coil turn number detection device provided by the embodiment, the characteristic that the steel sheet-shaped contact of the contact assembly 3 has elastic recovery capability is utilized, the separation and communication of the first contact 5 and the second contact 6 are recorded, a change electric signal is generated, and the turn number of the coil is rapidly and accurately detected. The work efficiency of coil turns detection is improved.
In summary, according to the pancake coil turn number detection device provided by the embodiment of the invention, the counter is used for recording the change electric signal generated when the contact assembly at one end of the detection device passes through the coil wire, so that the coil turn number can be rapidly and accurately detected, and the coil turn number detection working efficiency is improved.
The foregoing is illustrative of example embodiments and is not to be construed as limiting thereof. Although a few example embodiments have been described, those skilled in the art will readily appreciate that many modifications are possible in the example embodiments without materially departing from the novel teachings and advantages of this disclosure. Accordingly, all such modifications are intended to be included within the scope of this disclosure as defined in the claims. Therefore, it is to be understood that the foregoing is illustrative of various example embodiments and is not to be construed as limited to the specific example embodiments disclosed, and that modifications to the disclosed example embodiments, as well as other example embodiments, are intended to be included within the scope of the appended claims.
Claims (6)
1. The cake-type coil turns detection device is characterized by comprising a counter, a support connecting plate and a contact assembly, wherein the counter and the contact assembly are fixedly connected with two ends of the support connecting plate respectively; the counter is connected with the contact assembly through a connecting wire; the contact assembly comprises a first contact, a second contact and a contact connecting mechanism; the first contact and the second contact can be communicated or disconnected through a contact connecting mechanism; the first contact and the second contact are in a strip-shaped or sheet-shaped structure, and the length of the first contact is longer than that of the second contact; the first contact and the second contact are members bent downward in a horizontal direction, or the first contact and the second contact are members vertically downward in a vertical direction.
2. The pancake coil turn detection device of claim 1, further comprising a contact platen for flattening the first and second contacts upward in a horizontal direction; the length of the contact pressing plate is not smaller than that of the supporting connecting plate.
3. The pancake coil turn detection apparatus of claim 1 wherein the connecting wire is fixed to one side of the support connection plate.
4. The pancake coil turn detection apparatus of claim 1, wherein the length of the supported connection plates is 300-400 mm and the thickness is 0.5-1 mm; the height of the first contact and the second contact in the vertical direction is 2mm-4mm.
5. The pancake coil turn detection apparatus of claim 1 wherein the contact connection mechanism is fixedly connected to either the first or second contact.
6. The pancake coil turn detection apparatus of claim 1 wherein the contact connection mechanism is conductive silicone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711122898.XA CN107807286B (en) | 2017-11-14 | 2017-11-14 | Cake-type coil turns detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711122898.XA CN107807286B (en) | 2017-11-14 | 2017-11-14 | Cake-type coil turns detection device |
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| CN107807286A CN107807286A (en) | 2018-03-16 |
| CN107807286B true CN107807286B (en) | 2023-11-10 |
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| CN201711122898.XA Active CN107807286B (en) | 2017-11-14 | 2017-11-14 | Cake-type coil turns detection device |
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| CN109272100A (en) * | 2018-09-03 | 2019-01-25 | 南京冠盛汽配有限公司 | Hub-bearing unit band end cap detection magnetic number of poles method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490671A (en) * | 1983-01-17 | 1984-12-25 | Morong Iii William H | Apparatus and method for determining the number of turns on a sample coil |
| JPH1050409A (en) * | 1995-08-11 | 1998-02-20 | Naomasa Idosaka | Conduction state confirmation signal generator, and electrical splicer having functions of generating conduction state confirmation signal and of maintaining safety |
| CN2911701Y (en) * | 2006-05-26 | 2007-06-13 | 严小雯 | Survey probe and switch gang measuring mechanism of turn number-turn ratio measurer |
| CN103454580A (en) * | 2013-08-23 | 2013-12-18 | 国家电网公司 | Device for testing characteristics of breaker opening and closing coils |
| CN103487715A (en) * | 2013-09-29 | 2014-01-01 | 天津普林电路股份有限公司 | Device for rapidly testing high density interconnect circuit board backflow coils |
| CN207424119U (en) * | 2017-11-14 | 2018-05-29 | 保定天威集团特变电气有限公司 | Disk-type winding number of turn detection device |
-
2017
- 2017-11-14 CN CN201711122898.XA patent/CN107807286B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490671A (en) * | 1983-01-17 | 1984-12-25 | Morong Iii William H | Apparatus and method for determining the number of turns on a sample coil |
| JPH1050409A (en) * | 1995-08-11 | 1998-02-20 | Naomasa Idosaka | Conduction state confirmation signal generator, and electrical splicer having functions of generating conduction state confirmation signal and of maintaining safety |
| CN2911701Y (en) * | 2006-05-26 | 2007-06-13 | 严小雯 | Survey probe and switch gang measuring mechanism of turn number-turn ratio measurer |
| CN103454580A (en) * | 2013-08-23 | 2013-12-18 | 国家电网公司 | Device for testing characteristics of breaker opening and closing coils |
| CN103487715A (en) * | 2013-09-29 | 2014-01-01 | 天津普林电路股份有限公司 | Device for rapidly testing high density interconnect circuit board backflow coils |
| CN207424119U (en) * | 2017-11-14 | 2018-05-29 | 保定天威集团特变电气有限公司 | Disk-type winding number of turn detection device |
Non-Patent Citations (1)
| Title |
|---|
| 线圈匝数检测装置的改进;苗增秀 等;机床电器(第2期);7-8 * |
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