CN205210248U - Three -dimensional alignment sensor is put in generator, motor office - Google Patents
Three -dimensional alignment sensor is put in generator, motor office Download PDFInfo
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- CN205210248U CN205210248U CN201521058897.XU CN201521058897U CN205210248U CN 205210248 U CN205210248 U CN 205210248U CN 201521058897 U CN201521058897 U CN 201521058897U CN 205210248 U CN205210248 U CN 205210248U
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Abstract
The utility model relates to a three -dimensional alignment sensor is put in generator, motor office belongs to high -voltage electrical equipment trouble location technical field. Technical scheme is: contain silicon rubber clad material (1), electric pulse receiving coil (2), metallic shield focus cover (3), pulse ultrasonic receiver (4), receiver signal output interface (5), the opening of metallic shield focus cover front end is tubular structure, installation electric pulse receiving coil (2) in the opening, leave the gap between electric pulse receiving coil and the metallic shield focus cover inner wall, in the metallic shield focus cover rear side, embedded installation pulse ultrasonic receiver (4), pulse ultrasonic receiver receives the directional dead ahead of terminal surface. The utility model discloses guaranteeing detectivity, increasing and detect directive property, can receive electromagnetic wave signal and ultrasonic signal ware simultaneously, amplitude that not only can the passing signal determines the order of severity that discharges of equipment, and fault point position is confirmed to accessible electroacoustic location upon delta -T's method moreover.
Description
Technical field
The utility model relates to a kind of generator, three-dimensional localization sensor is put in motor office, adopt electromagnetic wave and ultrasonic combined detection, realize accurately locating the detection of local discharge signal of generator and motor and the three dimensions of trouble spot, belong to high voltage electric equipment Fault-Locating Test field.
Background technology
High-rating generator and motor are the visual plants in electric system, ensure its safe operation to electric system stable, reliability service is significant.About the accident that Chinese large-sized generator and motor are caused by stator winding insulation problem accounts for the half of whole accident, visible stator insulation fault proportion is higher.The most effective method of prevention generator and motor stator insulation fault carries out Partial Discharge Detection exactly.At present, detection relative maturity is put to the office of generator and motor, but do not have a kind of effective detection means accurately can navigate to abort situation, when the fault such as the breakage of stator winding generation wire, turn-to-turn electric discharge of generator or motor, if accurately point of discharge can not be found, maintenance difficult will be caused.Traditional localization method adopts ultrasonic locatization, but ultrasonic method sensitivity is lower, small discharge signal not easily detected, and need external synchronizing signal.The detection sensitivity of radio frequency detection method to electric signal is higher, but directivity is poor.
Utility model content
The utility model object is to provide a kind of generator, three-dimensional localization sensor is put in motor office, detection sensitivity can be ensured, increase again and detect directive property, electromagnetic wave signal and ultrasonic signal device can be received simultaneously, accurately to find out discharge position by the method for the acoustic-electric time difference on three dimensions, solve the problems referred to above that background technology exists.
The technical solution of the utility model is:
Three-dimensional localization sensor is put in a kind of generator, motor office, comprise Silicone Rubber for Inhibition, electric pulse receiving coil, metallic shield focus mask, impulse ultrasound receiver and receiver signal output interface, the opening of metallic shield focus mask front end is tubular construction, installs electric pulse receiving coil in opening; Gap is left between electric pulse receiving coil and metallic shield focus mask inwall, this gap can shield the undesired signal of side, make the signal in electric pulse receiving coil directive reception dead ahead, also can avoid because electric pulse receiving coil and metallic shield focus mask hypotelorism affect Signal reception, ensure that sensor has higher sensitivity to electric impulse signal; In on rear side of metallic shield focus mask, installation by adhering impulse ultrasound receiver; Ensure during installation that impulse ultrasound receiver receives end face directed straight ahead, electric pulse receiving coil, metallic shield focus mask and impulse ultrasound receiver are outside by Silicone Rubber for Inhibition integral coating.
Metallic shield focus mask opening adopts cylindrical openings structure, can collect signal and strengthen detection sensitivity, Signal reception can also be made to have very strong directivity, be conducive to accurately finding position of failure point.
Described metallic shield focus mask opening adopts cone barrel hatch frame cover, and positioning precision, up to 20mm, accurately can locate the particular location of the equipment deficiency such as generator, motor stator high pressure winding.The utility model has very high sensitivity and positioning precision, is particularly suitable for Partial Discharge Detection and the location of the high-tension apparatuses such as generator unit stator winding, dry-type transformer, high-tension switch cabinet, cable.
Electric pulse receiving coil, metallic shield focus mask and impulse ultrasound receiver are outside to be avoided directly contacting with detected equipment high pressure position by Silicone Rubber for Inhibition integral coating, ensures overall dielectric strength.
The utility model can receive the electromagnetic wave and ultrasonic signal that the inner shelf depreciation of high-tension apparatus produces simultaneously, and by the method localization of faults position of electroacoustic location; Electromagnetic range of receiving: 100k-1.5GHz.Ultrasonic range of receiving: 10k-150k.
The utility model good effect: ensure detection sensitivity, increase and detect directive property, electromagnetic wave signal and ultrasonic signal device can be received simultaneously, the discharge severity of judgment device not only can be carried out by the amplitude of signal, and by the method localization of faults position of electroacoustic positioning using TDOA, detection sensitivity is high, and positioning precision is high.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model axle side schematic diagram;
In figure: Silicone Rubber for Inhibition 1, electric pulse receiving coil 2, metallic shield focus mask 3, impulse ultrasound receiver 4, receiver signal output interface 5.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described further.
Three-dimensional localization sensor is put in a kind of generator, motor office, comprise Silicone Rubber for Inhibition 1, electric pulse receiving coil 2, metallic shield focus mask 3, impulse ultrasound receiver 4 and receiver signal output interface 5, the tapered hatch frame of opening of metallic shield focus mask 3 front end, installs electric pulse receiving coil 2 in opening; Gap is left between electric pulse receiving coil 2 and metallic shield focus mask 3 inwall, this gap can shield the undesired signal of side, make the signal in electric pulse receiving coil 2 directive reception dead ahead, also can avoid, because electric pulse receiving coil 2 and metallic shield focus mask 3 hypotelorism affect Signal reception, ensureing that sensor has higher sensitivity to electric impulse signal; In on rear side of metallic shield focus mask 3, installation by adhering impulse ultrasound receiver 4; Ensure during installation that impulse ultrasound receiver 4 receives end face directed straight ahead, electric pulse receiving coil 2, metallic shield focus mask 3 and impulse ultrasound receiver 4 outside are by Silicone Rubber for Inhibition 1 integral coating.
Metallic shield focus mask opening adopts cylindrical openings structure, can collect signal and strengthen detection sensitivity, Signal reception can also be made to have very strong directivity, be conducive to accurately finding position of failure point.
Described metallic shield focus mask opening adopts cone barrel hatch frame cover, and positioning precision, up to 20mm, accurately can locate the particular location of the equipment deficiency such as generator, motor stator high pressure winding.The utility model has very high sensitivity and positioning precision, is particularly suitable for Partial Discharge Detection and the location of the high-tension apparatuses such as generator unit stator winding, dry-type transformer, high-tension switch cabinet, cable.
Sensor monnolithic case is tubular, and the opening of metallic shield focus mask 3 front end is cone barrel, interior installation electric pulse receiving coil 2, and the number of turn is 3-5 circle, and electric pulse receiving coil 2 is formed by the copper wire winding of wire diameter 0.3-0.5, and the number of turn is 3-5 circle.The distance of 1mm is left between electric pulse receiving coil 2 and metallic shield focus mask 3 inwall, this distance can shield the undesired signal of side, make the signal in electric pulse receiving coil 2 directive reception dead ahead, can also avoid, because electric pulse receiving coil 2 and metallic shield focus mask 3 hypotelorism affect Signal reception, ensureing that sensor has higher sensitivity to electric impulse signal.
Open diameter 10mm circular hole on rear side of metallic shield focus mask 3, at circular hole built-in type, impulse ultrasound receiver 4 is installed; Ensure during installation that impulse ultrasound receiver 4 receives end face directed straight ahead.Sensor front end opening is tapered, can collect ultrasonic signal, strengthens detection sensitivity and the detection directive property of sensor.
The Partial discharge signal that electric pulse receiving coil 2 and impulse ultrasound receiver 4 receive puts checkout equipment through sensor signal output interface 5 from the sensor rear end extraction office of being connected to.
Sensor external, by Silicone Rubber for Inhibition 1 integral coating, avoids sensor conductor part directly to contact with test product high pressure position, and ensure that overall dielectric strength.
Claims (4)
1. three-dimensional localization sensor is put in a generator, motor office, it is characterized in that: comprise Silicone Rubber for Inhibition (1), electric pulse receiving coil (2), metallic shield focus mask (3), impulse ultrasound receiver (4), receiver signal output interface (5), the opening of metallic shield focus mask (3) front end is tubular construction, installs electric pulse receiving coil (2) in opening; Gap is left between electric pulse receiving coil (2) and metallic shield focus mask (3) inwall, in metallic shield focus mask (3) rear side, installation by adhering impulse ultrasound receiver (4); It is directed straight ahead that impulse ultrasound receiver (4) receives end face, and electric pulse receiving coil (2), metallic shield focus mask (3) and impulse ultrasound receiver (4) are outside by Silicone Rubber for Inhibition (1) integral coating.
2. three-dimensional localization sensor is put in a kind of generator according to claim 1, motor office, it is characterized in that: the opening of metallic shield focus mask (3) front end is cone barrel.
3. three-dimensional localization sensor is put in a kind of generator according to claim 2, motor office, it is characterized in that: sensor monnolithic case is tubular, interior installation electric pulse receiving coil (2), the number of turn is 3-5 circle, electric pulse receiving coil (2) is formed by the copper wire winding of wire diameter 0.3-0.5, and the number of turn is 3-5 circle.
4. three-dimensional localization sensor is put in a kind of generator according to claim 1 and 2, motor office, it is characterized in that: metallic shield focus mask (3) rear side opens diameter 10mm circular hole, is embedded in installs impulse ultrasound receiver (4) at circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521058897.XU CN205210248U (en) | 2015-12-18 | 2015-12-18 | Three -dimensional alignment sensor is put in generator, motor office |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521058897.XU CN205210248U (en) | 2015-12-18 | 2015-12-18 | Three -dimensional alignment sensor is put in generator, motor office |
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| Publication Number | Publication Date |
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| CN205210248U true CN205210248U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521058897.XU Active CN205210248U (en) | 2015-12-18 | 2015-12-18 | Three -dimensional alignment sensor is put in generator, motor office |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596550A (en) * | 2019-09-25 | 2019-12-20 | 哈尔滨理工大学 | Ultrasonic sensor for detecting partial discharge signal of generator |
| CN113514740A (en) * | 2021-07-09 | 2021-10-19 | 哈尔滨理工大学 | Space positioning method for corona of generator stator winding |
| US20210349140A1 (en) * | 2020-05-08 | 2021-11-11 | Abb Schweiz Ag | Sensing arrangement |
-
2015
- 2015-12-18 CN CN201521058897.XU patent/CN205210248U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596550A (en) * | 2019-09-25 | 2019-12-20 | 哈尔滨理工大学 | Ultrasonic sensor for detecting partial discharge signal of generator |
| US20210349140A1 (en) * | 2020-05-08 | 2021-11-11 | Abb Schweiz Ag | Sensing arrangement |
| US11719737B2 (en) * | 2020-05-08 | 2023-08-08 | Abb Schweiz Ag | Sensing arrangement |
| CN113514740A (en) * | 2021-07-09 | 2021-10-19 | 哈尔滨理工大学 | Space positioning method for corona of generator stator winding |
| CN113514740B (en) * | 2021-07-09 | 2022-08-02 | 哈尔滨理工大学 | Space positioning method for corona of generator stator winding |
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