CN2116911U - Multi-purpose high-voltage hot-line measuring instrument - Google Patents
Multi-purpose high-voltage hot-line measuring instrument Download PDFInfo
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- CN2116911U CN2116911U CN 90209710 CN90209710U CN2116911U CN 2116911 U CN2116911 U CN 2116911U CN 90209710 CN90209710 CN 90209710 CN 90209710 U CN90209710 U CN 90209710U CN 2116911 U CN2116911 U CN 2116911U
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- head
- amplifier
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- temperature
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Abstract
The utility model provides a multi-purpose high-voltage hot-line measuring instrument, belonging to the field of instrumentation. A long hard hollow insulating tube is set according to the insulation requirement of various voltage grades under 35KV and the requirement of operating distance, whose two ends are provided with a replaceable sensing component and a corresponding display component. The utility model utilizes the transmission of the infrared ray in the hollow insulating tube to realize the on-site direct reading of the measuring result of the voltage and the current of the high-voltage circuit or the temperature-rise number value of the instrument in operation, etc. The utility model has the advantages of simple structure, convenient operation and carrying and low cost.
Description
The utility model is that a kind of high voltage is used the live line measurement instrument more, belongs to the measurement instrument class.Available it directly measure the temperature etc. of following each electric pressure transmission of electricity supply line electric current of operating 35KV, equipment heating point.
At present, be the high voltage electroscope with the immediate a kind of instrument of the utility model.Whether it can only check transmission line of electricity and each position of equipment to have.Its signal transmission has optical fiber transmission and modes such as the audio frequency sound, visible light warning.With the utility model--with the same design proposal and the product of high-tension measurement instrument of infrared ray transmission measuring-signal, at home and abroad also do not see.
For in the work of the transmission of electricity power supply safety of checking, supervising each electric pressure below the 35KV, economy, operation rationally, especially those are not adorned the electric current of current transformer circuit and to the temperature equivalence of heat generating spot on cable end, line joint and the electric equipment, all need often charged the monitoring.
The purpose of this utility model: the surveying instrument that provides voltage, electric current or equipment temperature rise that a kind of live line measurement easily goes out high-voltage circuit.
Fig. 1 is that high voltage is used live line measurement instrument principle assumption diagram more.It has its length of hollow insulation tube (102) of a hard below 35KV, decide by the needs of the insulating requirements of needed each electric pressure and operating distance, end at it is equipped with the sensing element (101) that can change, and the other end is equipped with and (101) corresponding removable display units (103).Sensing element (101) end is equipped with infrared emission tube (105), and the head of display unit (103) has infrared receiver tube (106), and infrared emission tube (105) and infrared receiver tube (106) are relative and adorn at the two ends of hollow insulation tube (102); Its measuring-signal is to utilize the transmission of infrared ray in hollow insulation tube, realizes the on-the-spot direct-reading to the numerical value such as voltage, electric current or equipment temperature rise of high-voltage circuit in service.
Sensing element (101) and display unit (103) can be in thread connection with the connecting mode of hollow insulation tube (102), choose any one kind of them in the connecting mode of routines such as the lock road connects, the connection of elastic component chucking, its principle is to guarantee its replacing, demolition, installation, easy to carry, is suitable for in-site measurement.
Fig. 2 is the measuring principle block scheme: the one tunnel has sensing link, conversion or amplifying element and infrared link, and another road has infrared ray to receive link, conversion amplifying element and demonstration link.Each link links successively in the two-way, does not have direct electrical communication between the two-way, but get in touch by the aerial transmission of infrared waves between infrared link and the infrared ray reception link.
The difference that used sensing element is pressed measure physical quantities in the above-mentioned sensing link is and different, and the sensing link of for example measuring temperature is a thermistor; The sensing link of surveying electric current is exactly a pincerlike iron core current transformer; If survey voltage or current potential, then be a capacitance inductor.
Said infrared emission link is an infrared emission tube; What said infrared reception link was used is an infrared receiver tube.
Described demonstration link generally is an electromagnetic type milliampere gauge outfit or conventional digital indicator.
The amplifying element of above-mentioned two-way all is the simplest conventional level semiconductor triode amplifying circuit, if sensing link signal by force then need not to amplify.The sensing element of sensing link such as thermistor, induction by current coil, capacitance inductor etc. all are to be connected in the bias loop of transistor base of amplifying element, and its infrared transmitting tube then is connected in the collector loop of triode.Be in the demonstration link amplifying circuit on the way, infrared receiver tube is connected in the base loop of triode, and the driving element of display gauge head is connected in the collector loop of triode.Measuring process is: from measuring the signal that sensing element is received, through amplifying or changing and deliver to the infrared emission link, launch infrared signal immediately; The infrared reception link on another road is delivered to the demonstration link with received infrared signal through amplification, has finished measuring process.
The utility model has the advantages that: 1. infrared ray transmits in hollow insulation tube, has avoided external interference, can guarantee measuring accuracy.2. sensing element and corresponding display unit replacing easily on demand, demolition, installation, easy to carry are best suited for in-site measurement.3. simple in structure, easy to operate, cost is low.
Embodiment one: be a high voltage thermo detector, Fig. 3 has drawn the structural drawing of this thermo detector.It has its length of a hollow insulation tube of long hard (305) to decide by the needs of the requirement of following each the electric pressure insulation distance of 35KV and operating distance, the sensing element that its end is adorned is a temperature-sensitive head, be made of temp probe (301), amplifier (302) and infrared emission tube (303), its temp probe is to make with the end that thermistor is set in good heat conducting material.The display unit of adorning at the other end of hollow insulation tube (305) is a temperature bubble head, is to refer to that by infrared receiver tube (308), amplifier (310) and temperature gauge outfit (309) is constituted, and its temperature indication gauge outfit is an electromagnetic type milliampere gauge outfit.
The connecting mode of temperature-sensitive head and temperature bubble head and hollow insulation tube is the protruding button structure in a kind of lock road, be on temperature-sensitive head shell (312) and temperature bubble head shell (315), to have done L shaped lock road (313) and (314), protruding button (304) and (307) on sidewall appropriate location, the two ends of hollow insulation tube, have been done, during assembling, to screw then at the bottom of the protruding button insertion lock road, making lock road turn of bilge just in time block protruding button, is inverse process during dismounting.
Its amplifier (302) and amplifier (310) all are conventional one-level transistor amplifiers, in temperature-sensitive head, thermistor is connected in the base loop of amplifier (302) triode, and infrared emission tube is connected in the collector loop of this amplifier triode; In the temperature bubble head, infrared receiver tube is connected in the base loop of amplifier (310) triode, and the drive coil of electromagnetic type milliampere gauge outfit is connected in the collector loop of triode.
Its measuring process: resistance changed when the thermistor of temperature-sensitive head contacted measured object, deflection is put the electric current variation makes the electric current increase of the infrared transmitting tube in the collector loop of flowing through cause the infrared ray dosage of its emission also to increase through the triode amplification, the infrared receiver tube that this ultrared increment is in the temperature bubble head receives, simultaneously, because the variation of infrared receiver tube self-resistance changes the bias current of triode in the temperature bubble head, drive the electromagnetism milliampere head coil deflection that is connected in the transistor collector loop through the triode amplification, indicate its temperature value, so far, thermometric finishes.
Embodiment two is a kind of high voltage clamps on amperemeter.Fig. 4 is the structural drawing of high pressure clamp on amperemeter, and it has its length of a hollow insulation tube of long hard (405) below 35KV, decides by the needs of the insulating requirements of needed each electric pressure and operating distance.End at this hollow insulation tube is equipped with the current sample head, and it is made up of split core type current transformer (401), rectifier (402) and infrared emission tube (403).The other end is equipped with the electric current bubble head, is made up of infrared receiver tube (408), switching amplifier (410) and electric current gauge outfit (409).The lever pulley mechanism that the pincerlike iron core of control opens and closes also is housed on current sample head and electric current bubble head, and it is made up of tiller (406), lower sheave (412), top sheave (413), insulation ropes (414) and backspace spring (416).One end of insulation ropes is fixed on the pincerlike iron core handle (415), by top sheave (413) and lower sheave (412), the other end is fixed on tiller (406) to be gone up and to pull tiller (406) rope to the direction of arrow pincerlike iron core is opened, after letting go, under the backspace spring action, reset, can block tested lead easily like this.
The connecting mode of current sample head and electric current bubble head and hollow insulation tube make with embodiment one in the same protruding button structure in lock road.
Its electric connecting relation is: in the current sample head, the primary side of split core type current transformer is exactly tested lead, second siding ring is connected with rectifier (402), this rectifier is a conventional semiconductor diode full wave rectifier, the output current signal of rectifier (402) is very strong, do not need to amplify, infrared emission tube directly is connected in the output loop of rectifier again; Amplifier in the electric current bubble head (410) is an one-level transistor amplifier, and infrared receiver tube is connected in this amplifier transistor base loop, and the drive coil of electric current gauge outfit is connected in the collector loop of triode.
Its measuring process is: tiller (406) is pulled to the direction of arrow, opened pincerlike iron core, tested lead is entered in the jaw, then, decontrol tiller, pincerlike iron core resets under the effect of spring.If have electric current to pass through in the tested lead, then in the second siding ring of forcipated mutual-inductor, induction current is arranged, this electric current is exported to infrared emission tube through full-wave rectification, it launches infrared signal immediately, the infrared receiver tube that is in the hollow insulation tube other end receives, because the variation of infrared receiver tube self-resistance, cause the variation of amplifier transistor base electric current in the electric current bubble head, amplify through triode, driving is connected on the reometer head coil deflection in this transistor collector loop, indicate current value, measurement finishes.
Description of drawings:
Fig. 1: high voltage is used live line measurement instrument principle assumption diagram more.
The hollow insulation tube of 101-sensing element 102-
103-display unit 104-handle
105-infrared emission tube 106-infrared receiver tube
Fig. 2: measuring principle block scheme.
Each side's block representation: sensing link
Amplify conversion links
The infrared link
Infrared ray receives link
The conversion amplifying element
Show link
Arrow is represented: the measuring-signal trend
Fig. 3: high voltage temperature measurer.
301-temp probe 302-amplifier
The protruding button of 303-infrared emission tube 304-
The protruding button of the hollow insulation tube 307-of 305-
308-infrared receiver tube 309-temperature indication gauge outfit
310-amplifier 311-handle
312-temperature-sensitive head shell 313-locks the road
314-lock road 315-temperature bubble head shell
Fig. 4: high voltage clamp on amperemeter.
401-split core type current transformer 402-rectifier
The protruding button of 403-infrared emission tube 404-
The hollow insulation tube 406-of 405-tiller
The protruding button 408-of 407-infrared receiver tube
409-electric current gauge outfit 410-amplifier
411-handle 412-lower sheave
413-top sheave 414-insulation ropes
The pincerlike iron core handle of 415-416-backspace spring
Claims (3)
1, a kind of high voltage is used the live line measurement instrument more, it is characterized in that: it has the hollow insulation tube (102) of a hard, end at it is equipped with the sensing element (101) that can change, the other end is equipped with and (101) corresponding removable display units (103), sensing element (101) end is equipped with infrared emission tube (105), and the head of display unit (103) has infrared receiver tube (106), and infrared emission tube (105) and infrared receiver tube (106) are relative and adorn at the two ends of hollow insulation tube (102); Its measuring-signal is to utilize the transmission of infrared ray in hollow insulation tube, realizes the on-the-spot direct-reading to the numerical value such as voltage, electric current or equipment temperature rise of high-voltage circuit in service.
2, high voltage as claimed in claim 1 is many with charged side amount instrument,
It is characterized in that: its sensing element is a temperature-sensitive head, its display unit is a temperature bubble head, and temperature-sensitive head is made of temp probe (301), amplifier (302) and infrared emission tube (303) at a thermistor of good heat conducting material end edge; The temperature bubble head is made of infrared receiver tube (308), amplifier (310) and electromagnetic type milliampere gauge outfit (309); Temperature-sensitive head, temperature bubble head and hollow insulation tube three big parts, constitute the high voltage thermo detector, its amplifier (302) and amplifier (310) all are conventional one-level transistor amplifiers, in temperature-sensitive head, thermistor is connected in the base loop of amplifier (302) triode, and infrared emission tube is connected in the collector loop of this amplifier triode; In the temperature bubble head, infrared receiver tube is connected in the base loop of amplifier (310) triode, and the drive coil of electromagnetic type milliampere gauge outfit is connected in the collector loop of triode.
3, high voltage as claimed in claim 1 is used the live line measurement instrument more,
It is characterized in that: its sensing element is a current sample head, formed by split core type current transformer (401), rectifier (402) and infrared emission tube (403), its display unit is an electric current bubble head, is made up of infrared receiver tube (408), switching amplifier (410) and electric current gauge outfit (409).Current sample head, electric current bubble head and hollow insulation tube three big parts constitute the high voltage clamp on amperemeter; In the current sample head, the primary side of split core type current transformer is exactly tested lead, second siding ring is connected on the input end of conventional rectifier (402), infrared emission tube directly is connected in the output loop of rectifier, amplifier in the electric current bubble head (410) is a conventional one-level transistor amplifier, infrared receiver tube is connected in the base loop of this amplifier triode, the drive coil of electric current gauge outfit is connected in the transistor collector loop, the lever pulley mechanism that the pincerlike iron core of control opens and closes also is housed on current sample head and electric current bubble head, and it is by tiller (406), lower sheave (412), top sheave (413), insulation ropes (414) and backspace spring (416) are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209710 CN2116911U (en) | 1990-07-07 | 1990-07-07 | Multi-purpose high-voltage hot-line measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209710 CN2116911U (en) | 1990-07-07 | 1990-07-07 | Multi-purpose high-voltage hot-line measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2116911U true CN2116911U (en) | 1992-09-23 |
Family
ID=4889729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90209710 Granted CN2116911U (en) | 1990-07-07 | 1990-07-07 | Multi-purpose high-voltage hot-line measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2116911U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369070C (en) * | 2005-12-02 | 2008-02-13 | 陈津 | High voltage temperature on-line monitoring optronic switching contact box structure |
| CN104062490A (en) * | 2014-07-16 | 2014-09-24 | 北京师范大学 | Current and temperature measuring sensor |
| CN104459468B (en) * | 2014-12-04 | 2017-11-14 | 国家电网公司 | A kind of detection means that can prevent distribution line failure |
-
1990
- 1990-07-07 CN CN 90209710 patent/CN2116911U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369070C (en) * | 2005-12-02 | 2008-02-13 | 陈津 | High voltage temperature on-line monitoring optronic switching contact box structure |
| CN104062490A (en) * | 2014-07-16 | 2014-09-24 | 北京师范大学 | Current and temperature measuring sensor |
| CN104459468B (en) * | 2014-12-04 | 2017-11-14 | 国家电网公司 | A kind of detection means that can prevent distribution line failure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |