CN204203400U - A kind of generator casing earth detector - Google Patents
A kind of generator casing earth detector Download PDFInfo
- Publication number
- CN204203400U CN204203400U CN201420744507.3U CN201420744507U CN204203400U CN 204203400 U CN204203400 U CN 204203400U CN 201420744507 U CN201420744507 U CN 201420744507U CN 204203400 U CN204203400 U CN 204203400U
- Authority
- CN
- China
- Prior art keywords
- insulation shell
- neon bulb
- generator casing
- contact piece
- metal contact
- 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
Links
Abstract
The utility model discloses a kind of generator casing earth detector, it is characterized in that: comprise insulation shell, metal contact piece, resistance, neon bulb and bucker, described metal contact piece is embedded at the bottom of described insulation shell and exposes outside insulation shell, the bottom of described neon bulb is embedded at the top of insulation shell, the top of described neon bulb stretches out in described insulation shell outside, described metal contact piece is connected with a pole of neon bulb by being arranged on the resistance in insulation shell, another pole of described neon bulb is connected with the hard contact being arranged on insulation shell outside by wire, transparent watertight cover is equipped with outside described insulation shell, described wire runs through by described bucker.The utility model is reliable, safety, is swift in response, and structure is simple, can visual display detecting result, installs easy to operate, can the drain conditions of discovery generator casing accurately and timely, avoids the state of affairs to expand.
Description
Technical field
The utility model relates to hydropower generator, particularly relates to a kind of generator casing earth detector.
Background technology
According to electric power supplying regulation requirement, to the metallic member that electrical equipment exposes, all necessary reliable ground, prevents equipment leakage from causing machine to ruin people and hinders accident.Earth leakage protection will have a special metal wire; contact realizing small resistor between electrical equipment with the earth; or the zero-potential point of electrical equipment and electric power system is coupled together, so earth leakage protection is also called ground protection or zero connection protection with a special metal wire.For hydropower generator, due to power station environment high humidity, electrical equipment aging speed is very fast, and various components and parts all exist the possibility of corrosion short circuit, therefore must carry out detection of electrical leakage to generator casing.
If notification number is a kind of earth detector disclosed in the Chinese utility model patent of CN202649364U, comprise housing, master control board, detection of electrical leakage plate, separated time block, master control board, detection of electrical leakage plate, separated time block are arranged in housing, and master control board is connected with detection of electrical leakage plate; Described detection of electrical leakage plate comprises some detection of electrical leakage modules, and each detection of electrical leakage module is connected with the parts that will detect by respective extraction cable, and each cable of drawing is fixed by separated time block.This utility model patent structure is comparatively complicated, and cannot visual display detecting result.
Summary of the invention
It is little that the utility model technical issues that need to address are to provide a kind of identification error, and structure is simple, can the generator casing earth detector of visual display detecting result.
For solving the problem, technical solution adopted in the utility model is:
A kind of generator casing earth detector, it is characterized in that: comprise insulation shell, metal contact piece, resistance, neon bulb and bucker, described metal contact piece is embedded at the bottom of described insulation shell and exposes outside insulation shell, the bottom of described neon bulb is embedded at the top of insulation shell, the top of described neon bulb stretches out in described insulation shell outside, described metal contact piece is connected with a pole of neon bulb by being arranged on the resistance in insulation shell, another pole of described neon bulb is connected with the hard contact being arranged on insulation shell outside by wire, described insulation shell side and top outer are equipped with transparent watertight cover, described wire runs through by described bucker.
Further improve as the utility model, between described wire and bucker, be provided with sealing ring.Moisture and moisture can be avoided from wire access to plant, cause short circuit, damage equipment and misleading.
Further improve as the utility model, described sealing ring clear width is provided with card and dashes forward and groove, and described inside grooves is provided with Seal Oil.Preferably, be that more than three cards are dashed forward and two or more groove, multilayer flashing, ensures water proof effect.
Further improve as the utility model the bottom stating insulation shell and be fixedly installed sucker.Preferably, be multiple small sucker, the utility model can be fixed on generator casing surface, even if shell mechanism out-of-flatness does not affect fixing yet.
Further improve as the utility model, described metal contact piece lower end is fixedly installed sheet metal brush, can ensure that metal contact piece and generator casing are connected by conductor.Preferably, sheet metal brush is multiple.
Principle of work of the present utility model is:
When the utility model is arranged on generator casing, be positioned at metal contact piece bottom insulation shell and generator casing is connected.After hard contact reliable ground, when generator casing is without electric leakage, the electromotive force between metal contact piece and hard contact is 0, and in neon bulb, no current passes through, and neon bulb is not luminous, in dark state; When generator casing is charged, the electromotive force between metal contact piece and hard contact is greater than 0, has electric current to pass through in neon bulb, neon bulb is luminous, and in bright state, instruction generator casing is charged, owing to there being bucker, can ensure that the utility model is applied to the larger environment of power station humidity.
Compared with prior art, the beneficial effect adopting technique scheme to produce is:
The utility model is reliable, safety, is swift in response, and structure is simple, can visual display detecting result, installs easy to operate, can the drain conditions of discovery generator casing accurately and timely, avoids the state of affairs to expand.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is A portion of the present utility model enlarged drawing.
Wherein: 1 insulation shell, 2 metal contact pieces, 3 resistance, 4 neon bulbs, 5 suckers, 6 hard contacts, 7 wires, 8 sheet metal brushes, 9 sealing rings, 10 buckers, 91 block prominent, 92 grooves.
Embodiment
Below in conjunction with accompanying drawing, utility model is described in further detail:
As shown in figure 1 and 2, the utility model is a kind of generator casing earth detector, comprise insulation shell 1, resistance 3 is provided with in described insulation shell 1, the bottom of described insulation shell 1 is equipped with exposed metal contact piece 2, conveniently contact with generator housing, the top of described insulation shell 1 is equipped with exposed neon bulb 4, the light on and off of neon bulb 4 can be observed at any time, the electrode tip of described neon bulb 4 is arranged at described insulation shell 1 inner chamber, described metal contact piece 2 is connected with a pole of neon bulb 4 by being arranged on the resistance 3 in insulation shell 1, another pole of described neon bulb 4 is connected with the hard contact 6 being arranged on insulation shell 1 outside by wire 7, hard contact 6 in use should ground connection.Be equipped with transparent watertight cover 10 outside described insulation shell 1, described wire 7 runs through by described bucker 10, is provided with sealing ring 9 between described wire 7 and bucker 10.Described sealing ring 9 clear width is provided with card prominent 91 and groove 92, and described groove 92 inside is provided with Seal Oil.Avoid moisture access to plant inner, cause device short circuit, affect work.
Metal contact piece 2 lower end of stating of the present embodiment is fixedly installed sheet metal brush 8, is not subject to the impact of sucker height and the generator housing depth, and maintenance metal contact piece 2 is communicated with generator housing.
Be arranged on generator casing by bottom the utility model towards generator in use, namely the metal contact piece be positioned at bottom insulation shell contacts with generator casing, meanwhile, by hard contact reliable ground.When generator casing is without electric leakage, the electromotive force between metal contact piece and hard contact is 0, and in neon bulb, no current passes through, and neon bulb is not luminous, in dark state; When generator casing is charged, the electromotive force between metal contact piece and hard contact is greater than 0, has electric current to pass through in neon bulb, and neon bulb is luminous, and in bright state, instruction generator casing is charged.
The utility model is also fixedly installed sucker 5 structure in the bottom of insulation shell 1, can further facilitate of the present utility model installing and using.Only need in use to be placed on the iron and steel shell of generator by bottom the utility model towards generator, namely the air got rid of in sucker is firmly fixed on generator casing by suction, thus completes installation process of the present utility model.
The card that it will be appreciated by those skilled in the art that in the utility model is dashed forward and the purpose of design of groove is by the gap seals between wire and bucker, avoids moisture to enter, and therefore card number that is prominent and groove can be determined according to actual conditions.Be that 4 cards are dashed forward and 3 grooves in the present embodiment.
The above embodiment is only preferred embodiment of the present utility model, and and the feasible enforcement of non-invention exhaustive.For persons skilled in the art, to any apparent change done by it under the prerequisite not deviating from the utility model principle and spirit, all should be contemplated as falling with within claims of the present utility model.
Claims (5)
1. a generator casing earth detector, it is characterized in that: comprise insulation shell (1), metal contact piece (2), resistance (3), neon bulb (4) and bucker (10), described metal contact piece (2) is embedded at the bottom of described insulation shell (1) and exposes at insulation shell (1) outward, the bottom of described neon bulb (4) is embedded at the top of insulation shell (1), the top of described neon bulb (4) stretches out in described insulation shell (1) outside, described metal contact piece (2) is connected with a pole of neon bulb (4) by the resistance (3) be arranged in insulation shell (1), another pole of described neon bulb (4) is connected by the hard contact (6) that wire (7) is outside with being arranged on insulation shell (1), described insulation shell (1) side and top are equipped with transparent watertight cover (10), described wire (7) runs through by described bucker (10).
2. a kind of generator casing earth detector according to claim 1, is characterized in that: be provided with sealing ring (9) between described wire (7) and bucker (10).
3. a kind of generator casing earth detector according to claim 2, is characterized in that: described sealing ring (9) clear width is provided with card prominent (91) and groove (92), and described groove (92) inside is provided with Seal Oil.
4. a kind of generator casing earth detector according to any one of claim 1-3, is characterized in that: the bottom of described insulation shell (1) is fixedly installed sucker (5).
5. a kind of generator casing earth detector according to any one of claim 1-3, is characterized in that: described metal contact piece (2) lower end is fixedly installed sheet metal brush (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744507.3U CN204203400U (en) | 2014-12-03 | 2014-12-03 | A kind of generator casing earth detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744507.3U CN204203400U (en) | 2014-12-03 | 2014-12-03 | A kind of generator casing earth detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203400U true CN204203400U (en) | 2015-03-11 |
Family
ID=52661345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420744507.3U Expired - Fee Related CN204203400U (en) | 2014-12-03 | 2014-12-03 | A kind of generator casing earth detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204203400U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644014A (en) * | 2018-05-02 | 2018-10-12 | 普轩特泵业有限公司 | A kind of fire-fighting diesel engine unit |
| CN109511236A (en) * | 2018-11-01 | 2019-03-22 | 广西大学 | A kind of power equipment safety protective device |
| CN111129822A (en) * | 2020-01-13 | 2020-05-08 | 何培义 | Lock waterproof socket of electricity |
| CN113282126A (en) * | 2021-07-22 | 2021-08-20 | 南京开关厂有限公司 | Circuit breaker monitoring system and method |
-
2014
- 2014-12-03 CN CN201420744507.3U patent/CN204203400U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644014A (en) * | 2018-05-02 | 2018-10-12 | 普轩特泵业有限公司 | A kind of fire-fighting diesel engine unit |
| CN109511236A (en) * | 2018-11-01 | 2019-03-22 | 广西大学 | A kind of power equipment safety protective device |
| CN111129822A (en) * | 2020-01-13 | 2020-05-08 | 何培义 | Lock waterproof socket of electricity |
| CN113282126A (en) * | 2021-07-22 | 2021-08-20 | 南京开关厂有限公司 | Circuit breaker monitoring system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20161203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |