CN213715372U - Photoelectric sensor for discharge detection - Google Patents
Photoelectric sensor for discharge detection Download PDFInfo
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- CN213715372U CN213715372U CN202022608776.5U CN202022608776U CN213715372U CN 213715372 U CN213715372 U CN 213715372U CN 202022608776 U CN202022608776 U CN 202022608776U CN 213715372 U CN213715372 U CN 213715372U
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Abstract
The utility model discloses a photoelectric sensor for discharge detection, its characterized in that includes sensor housing, ultraviolet photosensitive element, temperature and humidity sensor and signal processing circuit, temperature and humidity sensor with signal processing circuit all set up sensor housing in, just temperature and humidity sensor with ultraviolet photosensitive element respectively with signal processing circuit link to each other, sensor housing on be equipped with the window, ultraviolet photosensitive element set up the window on, perhaps ultraviolet photosensitive element set up sensor housing in, and with the window corresponding, its humiture signal that can detect based on temperature and humidity sensor, the supplementary reason of judging discharge failure and producing.
Description
Technical Field
The utility model relates to a photoelectric detection technical field especially relates to a photoelectric sensor for discharging detection.
Background
In the field of electric power, medium-voltage switch cabinets of 10kV, 35kV and the like, ring main units, box-type transformers (installed in the cabinets) and dry-type transformers (installed in the cabinets) are high-voltage equipment commonly used at present. These high voltage devices often discharge due to high humidity or condensation in the cabinet, and the discharge may cause short circuit to ground, and even cause combustion and explosion in severe cases. In order to ensure safe use of these high voltage devices, it is necessary to detect the discharge phenomenon of these high voltage devices.
The ultraviolet light that the wave band is 80-280nm usually can produce in the discharge process, and the ultraviolet light of this wave band can be totally absorbed by the ozone layer when passing through the atmosphere in the sunlight, and the light intensity of this wave band is zero basically when arriving the ground, and ordinary illumination lamps and lanterns can not produce the light of this wave band generally, consequently, detect the ultraviolet light of this wave band in the discharge process, can successfully avoid the interference of sunlight and ordinary light, can realize the detection to the high-tension apparatus phenomenon of discharging, and false retrieval and false positive rate are extremely low. In addition, since the ultraviolet light detection does not need to contact a high voltage part, it is very safe to use. As such, a technology for detecting a discharge phenomenon based on ultraviolet light is currently being widely studied.
The existing photoelectric sensor for detecting the space discharge in the cabinet does not adopt a temperature and humidity sensor generally, but cannot detect temperature and humidity signals in the cabinet, so that the temperature and humidity conditions in the cabinet cannot be acquired, and the reason for generating discharge faults in the cabinet cannot be judged in an auxiliary manner.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a temperature and humidity signal based on temperature and humidity sensor detects is provided, the photoelectric sensor who is used for discharge detection of the reason of discharge fault production in the supplementary judgement cabinet.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a photoelectric sensor for discharge detection, its characterized in that includes sensor housing, ultraviolet photosensitive element, temperature and humidity sensor and signal processing circuit, temperature and humidity sensor with signal processing circuit all set up the sensor housing in, just temperature and humidity sensor with ultraviolet photosensitive element respectively with signal processing circuit link to each other, the sensor housing on be equipped with the window, ultraviolet photosensitive element set up the window on, perhaps ultraviolet photosensitive element set up the sensor housing in, and with the window corresponding.
As one of preferable schemes, the ultraviolet photosensitive element structure includes an element shell, a sensing unit and a primary window sheet, the ultraviolet photosensitive element is embedded in the window, the sensing unit is located in the element shell, the primary window sheet is located right above the sensing unit, the primary window sheet can transmit ultraviolet light below 280nm, and a through hole for exchanging with the external temperature and humidity is arranged on the sensor shell.
Preferably, the ultraviolet photosensitive element comprises an element shell and a sensitive unit, the ultraviolet photosensitive element is embedded in the window, and the element shell can transmit ultraviolet light with the wavelength of less than 280 nm.
As one preferable scheme, the ultraviolet photosensitive element comprises an element shell and a sensitive unit, the ultraviolet photosensitive element is arranged below the window, and a gap for exchanging with the external temperature and humidity is reserved on the sensor shell.
Preferably, the ultraviolet photosensitive element is one of a semiconductor ultraviolet detector, a photomultiplier tube and a photo avalanche diode, and is sensitive to ultraviolet light with a wavelength of 280nm or less.
As one of the preferable schemes, the signal processing circuit comprises an ultraviolet signal conditioning circuit, a data acquisition circuit and a communication circuit, the ultraviolet signal conditioning circuit is connected with the ultraviolet photosensitive element, the data acquisition circuit is respectively connected with the ultraviolet signal conditioning circuit and the temperature and humidity sensor, the communication circuit is connected with the data acquisition circuit, the ultraviolet signal conditioning circuit is used for providing a working power supply for the ultraviolet photosensitive element and acquiring a pulse or voltage signal output by the ultraviolet photosensitive element, the data acquisition circuit is used for respectively acquiring pulse or voltage signals output by the ultraviolet photosensitive element and digital signals output by the temperature and humidity sensor, and the signal is transmitted to the communication circuit, and the communication circuit transmits the signal acquired from the data acquisition circuit to the monitoring center.
As one preferable scheme, the ultraviolet signal conditioning circuit is implemented by a high-voltage circuit or a bias circuit.
As one preferable scheme, the communication circuit is provided with a wired communication interface or a wireless communication interface, and the output pulse signal or the voltage signal of the ultraviolet photosensitive element is transmitted to a monitoring center by adopting a wired communication mode or a wireless communication mode.
In conclusion, the application the utility model discloses a photoelectric sensor's for discharge detection technical scheme has following beneficial effect at least: compared with the prior art, the utility model has the advantages of this photoelectric sensor passes through the humiture signal in the humiture sensor detection cabinet, and then carries out the supplementary reason of judging discharge fault and producing based on the humiture condition in the cabinet to avoid electronic components in the photoelectric sensor to receive the influence of humiture and lead to detecting inaccurately, in addition, the utility model discloses a discharge detection alarm method carries out the comparison through actual measurement signal and threshold value to carry out serious discharge alarm through counting the number of times that is higher than threshold value signal, report an emergency and ask for help or increased vigilance more scientifically.
In order to make the present invention and other objects, advantages, features and functions thereof clearer and more understandable, preferred embodiments will be described in detail in the following detailed description, which is made with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a first embodiment of a photoelectric sensor having a temperature and humidity sensor;
FIG. 2 is a schematic structural diagram of a second embodiment of a photoelectric sensor with a temperature/humidity sensor;
FIG. 3 is a schematic structural diagram of a first embodiment of an ultraviolet photosensitive element;
FIG. 4 is a schematic structural diagram of a second embodiment of an ultraviolet photosensitive element;
FIG. 5 is a block diagram of a signal processing circuit;
FIG. 6 is a flow chart of a discharge detection alarm method and steps.
Description of reference numerals: the device comprises a sensor shell, a window 2, a temperature and humidity sensor 3, an ultraviolet photosensitive element 4, an element shell 41, a sensitive unit 42, a primary window sheet 43, a signal processing circuit 5, an ultraviolet signal conditioning circuit 51, a data acquisition circuit 52, a communication circuit 53 and a through hole 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present embodiment, for a clearer description, the following explanation is made: the terms "longitudinal," "lateral," "directly above," "directly below," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, are based on the orientation or positional relationship shown in the drawings, which are used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1 to 5, the present embodiment provides a photoelectric sensor for detecting discharge, which includes a sensor housing 1, an ultraviolet photosensitive element 4, a temperature and humidity sensor 3 and a signal processing circuit 5, wherein the temperature and humidity sensor 3 and the signal processing circuit 5 are both disposed in the sensor housing 1, the temperature and humidity sensor 3 and the ultraviolet photosensitive element 4 are respectively connected to the signal processing circuit 5, a window 2 is disposed on the sensor housing 1, the ultraviolet photosensitive element 4 is disposed on the window 2, or the ultraviolet photosensitive element 4 is disposed in the sensor housing 1 and corresponds to the window 2.
Referring to fig. 1 and 3, in one embodiment, the ultraviolet photosensitive element 4 includes an element housing 41, a sensing unit 42, and a primary window 43, the ultraviolet photosensitive element 4 is embedded in the window 2, the sensing unit 42 is located in the element housing 41, the primary window 43 is located right above the sensing unit 42, the primary window 43 can transmit ultraviolet light below 280nm, and at this time, an ultraviolet light signal can directly reach the sensing unit 42 through the primary window 43 of the ultraviolet photosensitive element 4 on the window 2, so as to sense an ultraviolet light intensity signal, wherein a through hole 6 for exchanging temperature and humidity with the outside is formed in the sensor housing 1.
Referring to fig. 1 and 4, in one embodiment, the ultraviolet photosensitive element 4 includes an element housing 41 and a sensing unit 42, the ultraviolet photosensitive element 4 is embedded in the window 2, the element housing 41 can transmit ultraviolet light below 280nm, and the element housing 41 can be used as a primary window 43, thereby saving the primary window 43.
Referring to fig. 2 and 3, in one embodiment, the ultraviolet photosensitive element 4 includes an element housing 41 and a sensing unit 42, the ultraviolet photosensitive element 4 is installed below the window 2, and at this time, an ultraviolet light signal firstly passes through the window 2, then passes through the element housing 41 and reaches the sensing unit 42 of the ultraviolet photosensitive element 4, so as to sense an ultraviolet light intensity signal, wherein a gap for exchanging temperature and humidity with the outside is left on the sensor housing 1.
In one embodiment, the ultraviolet photosensitive element 4 is one of a semiconductor ultraviolet detector, a photomultiplier tube and a photo avalanche diode, and is sensitive to ultraviolet light below 280 nm.
Referring to fig. 5, specifically, the signal processing circuit 5 includes an ultraviolet signal conditioning circuit 51, a data acquisition circuit 52 and a communication circuit 53, the ultraviolet signal conditioning circuit 51 is connected with the ultraviolet photosensitive element 4, the data acquisition circuit 52 is connected with the ultraviolet signal conditioning circuit 51, the communication circuit 53 is connected with the data acquisition circuit 52, the ultraviolet signal conditioning circuit 51 is used for providing a working power supply for the ultraviolet photosensitive element 4, and obtains the output pulse or voltage signal of the ultraviolet photosensitive element 4, sends the output pulse or voltage signal to the data acquisition circuit 52, the data acquisition circuit 52 is used for sending the output pulse or voltage signal of the ultraviolet photosensitive element 4 to the communication circuit 53, the communication circuit 53 is used for transmitting the output pulse signal or the voltage signal of the ultraviolet photosensitive element 4 to a monitoring center.
Further, the ultraviolet signal conditioning circuit 51 is implemented by a high voltage circuit or a bias circuit.
Further, the communication circuit 53 is provided with a wired communication interface or a wireless communication interface, and the output pulse signal or the voltage signal of the ultraviolet photosensitive element 4 is transmitted to the monitoring center by adopting a wired communication mode or a wireless communication mode.
Referring to fig. 6, the present embodiment further provides a discharge detection warning method, including the following steps:
(1) turning on the photoelectric sensor;
(2) each round of photoelectric sensor carries out P (P is more than or equal to 3 and less than or equal to 20) photoelectric signal measurement, the actual discharge signal obtained by the photoelectric sensor measurement is set as X, and the signal discharge alarm threshold value is set as X0Setting a signal threshold X for an attention alarm1If the signal is higher than the "attention alarm" threshold X1The number of times is n, n is more than or equal to 0 and less than or equal to P; wherein, X0And X1The numerical values are obtained by summarizing in the experimental or actual use process;
(3) when any one measured value X is more than or equal to X0When the alarm is generated, the alarm of 'generating discharge' is sent out; further, when any one measurement value X is more than or equal to X1The method comprises the following steps of sending out a signal of 'attention value' alarm, wherein 'discharge generation' alarm and 'attention value' alarm belong to a first-level alarm and a second-level alarm respectively;
(4) when P times of measurement are carried out continuously, the measured value X is more than or equal to X1When the number n of times is higher than (P-1)/2, a 'serious discharge' alarm is sent out, the 'serious discharge' alarm belongs to a third-level alarm, and the high-voltage equipment needs to be overhauled in a power failure mode at the moment.
When the photoelectric sensor actually works, an ultraviolet light signal enters the sensor through the window 2 on the sensor shell 1 and reaches the sensitive unit 42 of the ultraviolet photosensitive element 4 through the primary window sheet 43, so that an ultraviolet light intensity signal is sensed, processed by the signal processing circuit 5, and an alarm is realized.
In addition, in the actual measurement process of the photoelectric sensor, the high-voltage environment can generate electromagnetic interference, the accidental measurement value can be higher than the threshold value, accidental false alarm can be eliminated through multiple continuous measurements, and the alarm basis is more scientific.
Compared with the prior art, the utility model provides an advantage lies in that this photoelectric sensor passes through the humiture signal in the humiture sensor 3 detection cabinet, and then carries out the supplementary reason of judging the discharge fault and producing based on the humiture condition in the cabinet to avoid electronic components in the photoelectric sensor to receive the influence of humiture and lead to detecting inaccurately, in addition, the utility model discloses a discharge detection alarm method carries out the comparison through actual measurement signal and threshold value, and carries out the serious alarm of discharging through the number of times that statistics is higher than threshold value signal, reports an emergency and asks for help or increased vigilance more scientifically.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a photoelectric sensor for discharge detection, its characterized in that includes sensor housing, ultraviolet photosensitive element, temperature and humidity sensor and signal processing circuit, temperature and humidity sensor with signal processing circuit all set up the sensor housing in, just temperature and humidity sensor with ultraviolet photosensitive element respectively with signal processing circuit link to each other, the sensor housing on be equipped with the window, ultraviolet photosensitive element set up the window on, perhaps ultraviolet photosensitive element set up the sensor housing in, and with the window corresponding.
2. The photoelectric sensor for discharge detection according to claim 1, wherein the ultraviolet photosensor comprises an element housing, a sensing unit, and a primary window, the ultraviolet photosensor is embedded in the window, the sensing unit is located in the element housing, the primary window is located right above the sensing unit, the primary window is transparent to ultraviolet light below 280nm, and a through hole for exchanging temperature and humidity with the outside is formed in the sensor housing.
3. The photoelectric sensor for discharge detection according to claim 1, wherein the ultraviolet photosensitive element comprises an element housing and a sensing unit, the ultraviolet photosensitive element is embedded in the window, and the element housing can transmit ultraviolet light below 280 nm.
4. The photoelectric sensor for discharge detection according to claim 1, wherein the ultraviolet photosensitive element comprises an element housing and a sensing unit, the ultraviolet photosensitive element is installed below the window, and a gap for exchanging with the outside temperature and humidity is reserved on the sensor housing.
5. The photoelectric sensor for detecting discharge according to claim 1, wherein the ultraviolet photosensitive element is one of a semiconductor ultraviolet detector, a photomultiplier tube, and a photo avalanche diode, and is sensitive to ultraviolet light below 280 nm.
6. The photoelectric sensor for discharge detection according to claim 1, wherein the signal processing circuit comprises an ultraviolet signal conditioning circuit, a data acquisition circuit and a communication circuit, the ultraviolet signal conditioning circuit is connected with the ultraviolet photosensitive element, the data acquisition circuit is respectively connected with the ultraviolet signal conditioning circuit and the temperature and humidity sensor, the communication circuit is connected with the data acquisition circuit, the ultraviolet signal conditioning circuit is used for providing a working power supply for the ultraviolet photosensitive element and acquiring a pulse or voltage signal output by the ultraviolet photosensitive element, the data acquisition circuit is used for respectively acquiring a pulse or voltage signal output by the ultraviolet photosensitive element and a digital signal output by the temperature and humidity sensor and sending the pulse or voltage signal and the digital signal to the communication circuit, the communication circuit transmits the signals collected by the data collecting circuit to the monitoring center.
7. The photosensor for discharge detection according to claim 6, wherein said UV signal conditioning circuit is implemented by a high voltage circuit or a bias circuit.
8. The photoelectric sensor for discharge detection according to claim 6, wherein the communication circuit is provided with a wired communication interface or a wireless communication interface, and the output pulse signal or the voltage signal of the ultraviolet photosensitive element is transmitted to the monitoring center by using a wired communication mode or a wireless communication mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022608776.5U CN213715372U (en) | 2020-11-12 | 2020-11-12 | Photoelectric sensor for discharge detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022608776.5U CN213715372U (en) | 2020-11-12 | 2020-11-12 | Photoelectric sensor for discharge detection |
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| Publication Number | Publication Date |
|---|---|
| CN213715372U true CN213715372U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022608776.5U Active CN213715372U (en) | 2020-11-12 | 2020-11-12 | Photoelectric sensor for discharge detection |
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|---|---|
| CN (1) | CN213715372U (en) |
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2020
- 2020-11-12 CN CN202022608776.5U patent/CN213715372U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A photoelectric sensor for discharge detection Effective date of registration: 20220927 Granted publication date: 20210716 Pledgee: Ningbo Tianjin Enterprise Service Co.,Ltd. Pledgor: NINGBO ABNEY INFRARED TECHNOLOGY CO.,LTD. Registration number: Y2022980016558 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |