CN200969275Y - Anti-theft device for power transformer - Google Patents
Anti-theft device for power transformer Download PDFInfo
- Publication number
- CN200969275Y CN200969275Y CN 200620128116 CN200620128116U CN200969275Y CN 200969275 Y CN200969275 Y CN 200969275Y CN 200620128116 CN200620128116 CN 200620128116 CN 200620128116 U CN200620128116 U CN 200620128116U CN 200969275 Y CN200969275 Y CN 200969275Y
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- CN
- China
- Prior art keywords
- power transformer
- theft device
- mercoid switch
- testing circuit
- mercury switch
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
An anti-theft device of power transformer belongs to alarm device field, which comprises a mercury switch connecting a detection circuit. The utility model is characterized in that at least a mercury switch are provided on the detected power transformer, the contact of the mercury switch is connected in series with the detection circuit at normal close status. Based on the detection of the abnormal vibration or movement between the normal-closed contact of the mercury switch and the power transformer, and the stable physical properties of the mercury switch, the anti-theft device is provided with reliable alarm action and no false alarm phenomena, is convenient for transformation of the existing equipment and is easy to be accepted by users, which can be widely used in the anti-theft detection field of various electrical equipments.
Description
Technical field
The utility model belongs to the warning device field, relates in particular to the accident of a kind of appointment of response or the warning device of abnormal conditions.
Background technology
In recent years, electric power facility is stolen repeatedly, and especially transformer is stolen, badly influences the production of national economy, resident's normal life and agriculture, rural areas and farmers electricity consumption and power equipment safety operation, has caused heavy losses to national wealth.
The day for announcing is on January 4th, 2006, notification number is to disclose a kind of " electric power transformer anti-theft device " in the Chinese patent of CN 2750427Y, the upper end that it is included in body is provided with the stepped hole of locking bolt, its middle-end is provided with the notch of locking power transformer loam cake, its lower end is provided with the following hole of matching with lock nut, the locking bolt is connected with lock nut, in the stepped hole of body, the locking bolt is provided with antitheft blanking cover, the screwed hole of antitheft blanking cover is threaded with plug, the head that is characterized in the locking bolt is provided with external screw thread, is provided with internal thread hole in head center; The screwed hole of antitheft blanking cover and plug connecting thread are odd-pitch screw; On plug, be provided with the arc-shaped slot of symmetry; The external screw thread of locking bolt head is non-standard left hand thread; Be provided with the keying key of electric power transformer anti-theft device.Its good anti-theft effect can make power transformer exempt from artificial destruction and theft, guarantees that power transformer normally uses.But it is antitheft that it only adopts mechanical structure to carry out, and the deficiency of stolen signal can not be in time sent in existence.
The day for announcing is on February 11st, 2004, and notification number is to disclose a kind of " the thief-proof wireless alarm that cuts of ultra-high-tension power transmission line " in the Chinese patent of CN 2603465Y, and it includes sender unit and signal receiving device two parts.Sender unit comprises that 10KV transformer or 380V transformer and rectifying pressurizer, relay, reflector, wireless alarm, mercoid switch, chargeable battery are installed in the can after being electrically connected in the lump, and can is installed on the electric pole.Signal receiving device comprises receiver and warning flat-faced screen plate.When transmission line is stolen when cutting off electricity, two contactings of mercoid switch in the emitter, trigger wireless alarm and carry out work, send the coding alarm signal, signal is sent to receiver, this signal sends chimes of doom after decoding processing, the light-emitting diode that demonstrates in certain zone becomes redness by green on the flat-faced screen plate simultaneously, and it is stolen to indicate this regional address circuit.It adopts Wireless transmission mode to carry out the transmission of the signal of telecommunication, has solved the problem that larceny can not in time be found.But, because it utilizes mercoid switch to detect at the electric closing characteristics (normally opened contact characteristic) of run-off the straight/when rocking between its two contact, rate of false alarm is higher, and the molecule that can't avoid theft is cut off the line between mercoid switch and the wireless alarm problem that makes its inefficacy.
In addition, various places also adopt various burglar alarms such as ultrasonic wave, microwave, form such as infrared to carry out the antitheft of power equipment in recent years, but all have circuit scenario-frame complexity, the more high deficiency of rate of false alarm to some extent.
The utility model content
Technical problem to be solved in the utility model provides a kind of anti-theft device of power transformer, and it is reaching under the prerequisite of same technique effect, and the circuit scheme is more succinct, and the reliability of action is higher, does not have the wrong report phenomenon.
The technical solution of the utility model is: the anti-theft device that a kind of power transformer is provided, comprise the mercoid switch that is connected with testing circuit, it is characterized in that: at least one mercoid switch is set on detected power transformer, and the state of mercoid switch is connected in series in the testing circuit in normally closed mode.
Concrete, mercoid switch and permanent magnet are fixed for one constitutes probe apparatus through casting material and probe cassette together, are absorbed and fixed on the transformer housing.
Described mercury tilt switch or inversion are arranged on the detected power transformer.
Further, described mercoid switch is two, is separately positioned on the side of two different directions of detected power transformer, and two mercoid switches insert in the testing circuit with normally off series connection back.
Described mercoid switch is serially connected in the signal input part of testing circuit with normally off.
Compared with the prior art, the utility model has the advantages that:
1. adopt the normally closed characteristic of mercoid switch to detect the antitheft of power transformer, the reliability height of action does not have the wrong report phenomenon, can prevent artificial destruction alarm probe device (for example, smash, trimming), the phenomenon of not reporting to the police of appearance;
2. transformer is installed in outdoor public arena usually, and the personnel activity is frequent, and animal or other factors, the alarm probe of prior art can't be separated steal the wrong report factor by no means, and the technical program has solved this problem.It is only artificial destruction (smash alarm probe or cut off probe line), and the people causes mercoid switch to disconnect for moving transformer, just sends alarm signal.
Description of drawings
Fig. 1 is a mechanical structure schematic diagram of the present utility model;
Fig. 2 is that the A of Fig. 1 is to structural representation;
Fig. 3 is a circuit diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Among the figure, 1 is tested power transformer, and 2 is probing shell, and 3 is mercoid switch, and 4 is casting material, and 5 is permanent magnet, and 6 is testing circuit, and 7 is the normally off of mercoid switch.
Among Fig. 1, on detected power transformer 1, be provided with one be absorbed and fixed at detected power transformer on probing shell 2, mercoid switch 3 is set in the housing, mercoid switch and permanent magnet 5 are fixed through casting material 4 and probing shell to be one.
When take place transformer by the people for move, when smashing, probing shell tilts thereupon or rocks, mercoid switch wherein becomes " often opening " state by " normally closed " state that is provided with, the testing circuit warning.
Detect the improper vibration of power transformer or move by the mercoid switch in the probing shell, utilize its stable physical characteristic of mercury, solved " wrong report " problem of alarm.
Further, mercoid switch also can be provided with two or more, is set at the two or more different directions of detected power transformer respectively (for example, directions X and Y direction on) the side, with the detection sensitivity of further increase probe.
Among Fig. 2, the state of mercoid switch is connected in series in the testing circuit 6 in normally closed mode.
Because the state of mercoid switch is connected in series in the testing circuit in " normally closed " mode, whole testing circuit is in " closed loop " state, and when power transformer was moved or vibrate, " normally closed " state disconnected, for testing circuit provides signal on the one hand; On the other hand owing to adopt " normally closed " state, so in case the connecting line between mercoid switch and the testing circuit cut off, then its effect is equal to the disconnection of " normally closed " state, testing circuit can give the alarm equally, can prevent artificial destruction, improves the warning accuracy.
When adopting two or more mercoid switch, after should connecting, the contact of all switches is connected with the signal input part of testing circuit again.
Because the utility model utilizes improper vibration and/or mobile detect of " normally closed " state of mercoid switch to power transformer, has promptly utilized its stable physical characteristic of mercury, the reliability height of actuation of an alarm can stop to report by mistake phenomenon.
The utility model can be widely used in the antitheft detection range of various power transformers.
Claims (5)
1. the anti-theft device of a power transformer comprises the mercoid switch that is connected with testing circuit, it is characterized in that:
At least one mercoid switch is set on detected power transformer, and mercoid switch is connected in series in the testing circuit with normally off.
2. according to the anti-theft device of the described power transformer of claim 1, it is characterized in that described mercoid switch and permanent magnet are fixed for one constitutes probe apparatus through casting material and probe cassette together, be absorbed and fixed on the transformer housing.
3. according to the anti-theft device of the described power transformer of claim 1, it is characterized in that described mercury tilt switch or inversion are arranged on the detected power transformer.
4. according to the anti-theft device of the described power transformer of claim 1, it is characterized in that described mercoid switch is two, be separately positioned on the side of two different directions of detected power transformer, two mercoid switches insert in the testing circuit with normally off series connection back.
5. according to the anti-theft device of the described power transformer of claim 1, it is characterized in that described mercoid switch is serially connected in the signal input part of testing circuit with normally off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620128116 CN200969275Y (en) | 2006-11-09 | 2006-11-09 | Anti-theft device for power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620128116 CN200969275Y (en) | 2006-11-09 | 2006-11-09 | Anti-theft device for power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200969275Y true CN200969275Y (en) | 2007-10-31 |
Family
ID=38968849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620128116 Expired - Fee Related CN200969275Y (en) | 2006-11-09 | 2006-11-09 | Anti-theft device for power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200969275Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766423A (en) * | 2014-01-08 | 2015-07-08 | 陈奎发 | Vibration detector |
| CN105205995A (en) * | 2015-08-12 | 2015-12-30 | 国网天津市电力公司 | Alarm system preventing pole in the roadside from crash |
| CN106571591A (en) * | 2015-10-10 | 2017-04-19 | 五冶集团上海有限公司 | Anti-tilting detection device-equipped power distribution box and manufacturing method therefor |
-
2006
- 2006-11-09 CN CN 200620128116 patent/CN200969275Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766423A (en) * | 2014-01-08 | 2015-07-08 | 陈奎发 | Vibration detector |
| CN105205995A (en) * | 2015-08-12 | 2015-12-30 | 国网天津市电力公司 | Alarm system preventing pole in the roadside from crash |
| CN106571591A (en) * | 2015-10-10 | 2017-04-19 | 五冶集团上海有限公司 | Anti-tilting detection device-equipped power distribution box and manufacturing method therefor |
| CN106571591B (en) * | 2015-10-10 | 2018-07-13 | 五冶集团上海有限公司 | Distribution box and preparation method thereof with anti-down detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071031 Termination date: 20101109 |