CN208166567U - A kind of device for detecting refueling nozzle earth-return circuit - Google Patents
A kind of device for detecting refueling nozzle earth-return circuit Download PDFInfo
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- CN208166567U CN208166567U CN201820653233.5U CN201820653233U CN208166567U CN 208166567 U CN208166567 U CN 208166567U CN 201820653233 U CN201820653233 U CN 201820653233U CN 208166567 U CN208166567 U CN 208166567U
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- refueling nozzle
- circuit
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Abstract
The utility model provides a kind of device for detecting refueling nozzle earth-return circuit, including warning clip, measure loop, earth clip and earthing or grounding means, warning clip includes inner and outer clamp clip, inner clip, outer clip clamping end copper tooth is installed respectively, it is connected between inner clip, outer clip by torsional spring, setting sensor circuit module and detection circuit, the medial surface of outer clip are additionally provided with resistance value the Show Button, buzzer, digital display and LED light inside the handheld terminal of outer clip；Detection circuit includes resistance detection module, data processing module, resistance value display module and power module, data processing module is additionally coupled to alarm module and display control module, one end of detection circuit is connected with outer clip, the other end is connect with earth clip, and the clamping end of earth clip is connected with earthing or grounding means.Beneficial effect is, while having the function of real-time sound-light alarm and showing current grounding resistance, and device integrated operation is easy, safe, and operator judges work without the measurement that professional training can carry out circuit.
Description
Technical field
The utility model relates to the detection technique fields of gas station's refueling nozzle, more particularly to one kind to be used to detect refueling nozzle
The device of earth-return circuit.
Background technique
In general, gas station is during oiling, between swiftly flowing gasoline, diesel oil and filling conduit, oiling gun barrel
Friction will be generated, generates a large amount of electrostatic charge, or even local accumulation occur.Test result shows that oiling jet stream generates quiet
Charge can accumulate the up to potential difference of 10KV (oil filler is negatively charged, and oiling gun barrel is positively charged), this potential difference is enough to cause
Static discharge, i.e. generation discharge spark, meanwhile, it can also make refueling operation personnel and oiling vehicle under different conditions with quiet
Electricity.Once refueling nozzle electrostatic conducting, there is open circuit in ground connection, and will lead to the electrostatic generated in refueling cannot be by the way that " oil gun-adds
It leads and removes in time, cause electrostatic charge largely to gather, accumulate to and put in oil rubber hose plain conductor-fuel charger ontology-earthing or grounding means " circuit
When piezoelectric voltage, static discharge is possible to the oil gas that ignites, and causes danger.
But in actual operation, the static conductive circuit of fuel charger needs complicated measuring device to go to detect, and needs
It is equipped with professional and carries out circuit detection, cause the jejune gas station of many conditions that can not accomplish that detection is grounded back in time
Road；When refueling nozzle, which is connected, to break down, if cannot find that huge security risk will be buried in time.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of device for detecting refueling nozzle earth-return circuit.
To achieve the above object, the utility model adopts the following technical solutions：
A kind of device for detecting refueling nozzle earth-return circuit, including be connected with refueling nozzle warning clip, measure loop,
Earth clip and earthing or grounding means, the warning clip include inner and outer clamp clip, the inner clip, the outer clip clamping end on pacify respectively
A bronze medal tooth is filled, is connected between the inner clip, the outer clip by a torsional spring, setting is connected inside the handheld terminal of the outer clip
Sensor circuit module and detection circuit are additionally provided with resistance value the Show Button, buzzing on the medial surface display panel of the outer clip
Device, digital display and LED light；
The detection circuit includes resistance detection module, data processing module, resistance value display module and power module, described
Data processing module is additionally coupled to alarm module and display control module, and one end of the detection circuit passes through the resistance detection
Module is connected with the outer clip, and the other end is connect by steel wire conducting wire with the earth clip, the clamping end of the earth clip and
The earthing or grounding means is connected.
The technical solution of the utility model further includes that finger-type structure is additionally provided on the lateral surface of the handheld terminal of outer clip,
The finger-type structure includes four grooves to match with the finger-type of finger, is distributed several salient points in groove.
The technical solution of the utility model further includes the sensor circuit module and the digital display, the resistance
It is worth the Show Button to be connected.
The technical solution of the utility model further includes that alarm module includes the buzzer and the LED light.
The technical solution of the utility model further includes the cable selection steel for connecting the warning clip and the earth clip
Copper wire mixing conducting wire.
The technical solution of the utility model further includes that the copper tooth is U-shaped structure.
The technical solution of the utility model further includes that the earthing or grounding means selects a ground connection band iron.
In such a way that warning clip combines with earth clip connection, earth clip is clipped to the ground connection band iron in fuel charger by when use
On, warning clip is clipped on the gun barrel of refueling nozzle, at this point, warning clip, oil gun, refueling line plain conductor, fuel charger ontology, connecing
A link circuit is formed between ground device and earth clip, built-in detection circuit can detect the electricity in this circuit in warning clip
Resistance, to judge the earth-return circuit of oil gun, whether it is in a conductive state.If be not turned on, warning clip can be simultaneously emitted by sound, light report
It is alert, and can show current loop resistance value.
The utility model has the beneficial effects that
1, charactron real-time display grounding resistance is controlled using button；
2, alarm uses buzzer and the dual display of LED light；
3, the cable for connecting warning clip and earth clip uses steel copper wire mixing conducting wire, under the premise of ensure that low resistance,
Anti- drawing effect is taken into account, and small in size is easily recycled management；
4, sensor circuit part uses the complete encapsulation of epoxy resin, moisture-proof, antirust, anti-corrosion, antivibration；
5, the clamp of warning clip is using ergonomic design is met, and promotes gripping sense, and copper tooth can be clamped using U-shaped
The oil gun of different bores；
To sum up, utility model device has the function of real-time sound-light alarm simultaneously and shows current grounding resistance, device
Integrated operation is easy, safety, and operator judges work without the measurement that professional training can carry out circuit, super low-power consumption, just
No replacement is required during being often used battery.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the detection circuit composed structure schematic diagram in the utility model；
Fig. 3 is the utility model circuit detection process structural schematic diagram.
Wherein, 1- copper tooth；2- inner clip；3- outer clip；4- torsional spring；5- sensor circuit module；6- cable；7- earth clip；
8- buzzer；9- digital display；10-LED lamp；11- resistance value the Show Button；12- refueling nozzle；13- is grounded band iron.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1 and Figure 2, a kind of device for detecting refueling nozzle earth-return circuit, including what is be connected with refueling nozzle 12
Warning clip, measure loop, earth clip 7 and earthing or grounding means, warning clip includes inner clip 2 and outer clip 3, in the clamping of inner clip 2, outer clip 3
One bronze medal tooth 1 is installed respectively on end, is connected between inner clip 2, outer clip 3 by a torsional spring 4, phase is set inside the handheld terminal of outer clip 3
Sensor circuit module 5 and detection circuit even, be additionally provided on the medial surface display panel of outer clip 3 resistance value the Show Button 11,
Buzzer 8, digital display 9 and LED light 10；
Detection circuit includes resistance detection module, data processing module, resistance value display module and power module, data processing
Module is additionally coupled to alarm module and display control module, and one end of detection circuit is connected by resistance detection module with outer clip 3
It connects, the other end is connect by steel wire conducting wire with earth clip 7, and the clamping end of earth clip 7 is connected with earthing or grounding means, and earth clip 7 can be with
Clamp ground connection band iron 13.
Finger-type structure is additionally provided on the lateral surface of the handheld terminal of outer clip 3, which includes four and finger
The groove that finger-type matches is distributed several salient points in each groove, when for increasing hand-held between finger and warning clip
Frictional force, the hand-type of the perfect fitting operation person of structure energy, meets the design of ergonomics.
Particularly, sensor circuit module 5 is connected with digital display 9, resistance value the Show Button 11, sensor circuit mould
For block 5 using the single-chip microcontroller of super low-power consumption, power consumption is few, and increase module uses the time, and places it in outer clip 3
Portion, digital display 9 are placed on the inside of clamp, effectively protect circuit and display, prevent using when occur collide with to electricity
Road and display damage；In addition, sensor circuit module 5 uses epoxy resin encapsulation, resistance to moisture, and do not have to worry vibration
Etc. short circuit problem caused by reasons, meet requirement of explosion proof, the safety coefficient that the scene of increasing uses.
Particularly, alarm module includes buzzer 8 and LED light 10, and sound and light of alarm can be achieved at the same time.
Particularly, connection warning clip selects steel copper wire mixing conducting wire with the cable 6 of earth clip 7, ensure that low resistance
Under the premise of, anti-drawing effect is taken into account, and small in size be easily recycled management.
Particularly, copper tooth 1 is U-shaped structure, can clamp the oil gun of different bores, when warning clip opens clip, Ke Yi
The muzzle of refueling nozzle 12 is tightly clamped under the action of strength torsional spring 4.
Particularly, earthing or grounding means selects a ground connection band iron 13.
When carrying out circuit detection process, as shown in figure 3, in such a way that warning clip is combined with earth clip 7 and to be connected, when use
Earth clip 7 is clipped on the ground connection band iron 13 in fuel charger, warning clip is clipped on the gun barrel of refueling nozzle 12, at this point, warning clip,
A link circuit is formed between refueling nozzle 12, refueling line plain conductor, fuel charger ontology, ground connection band iron 13 and earth clip 7,
Built-in detection circuit can detect the resistance in this circuit in warning clip, to judge whether the earth-return circuit of oil gun is on
State.If be not turned on, warning clip can be simultaneously emitted by sound, light alarm, and can show current loop resistance value.
Detection conducting function：
When oil gun and earthing or grounding means are not turned on or when poor flow, can generate a bigger and unstable resistance value,
Around this principle, warning clip is clipped on oil gun, earth clip 7 clips on earthing or grounding means, is to lead between warning clip and earth clip 7
Logical, and resistance value is almost nil, can determine whether oil gun contacts with earthing or grounding means by detecting the resistance value between entire circuit
Well.
The measure loop of warning clip can detecte the grounding resistance in circuit, and offer sound, light are alarmed, moreover it is possible to aobvious by resistance value
Show that the control of button 11 shows current grounding resistance.
Resistance value display function：
There are resistance value the Show Button 11, digital display 9 and LED light 10 on the 3 inside display panel of outer clip of warning clip, when pressing
Once when resistance value the Show Button 11, digital display 9 will show real-time ground loop resistance value.
Resistance value display function is the real-time digital display function based on resistance detection circuit, sensor circuit module 5
To the principle of resistance detection circuit real-time detection, after modulus (A/D) conversion process, then pass through the control of resistance value the Show Button 15
Signal processed sends single-chip microcontroller to decide whether to send the grounding resistance for showing current.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the protection scope of the utility model.
Claims (7)
1. a kind of device for detecting refueling nozzle earth-return circuit, which is characterized in that including be connected with refueling nozzle warning clip,
Measure loop, earth clip and earthing or grounding means, the warning clip include inner and outer clamp clip, in the clamping of the inner clip, the outer clip
One bronze medal tooth is installed respectively on end, is connected between the inner clip, the outer clip by a torsional spring, inside the handheld terminal of the outer clip
Connected sensor circuit module and detection circuit are set, is additionally provided with resistance value on the medial surface display panel of the outer clip and shows
Button, buzzer, digital display and LED light；
The detection circuit includes resistance detection module, data processing module, resistance value display module and power module, the data
Processing module is additionally coupled to alarm module and display control module, and one end of the detection circuit passes through the resistance detection module
Be connected with the outer clip, the other end is connect by steel wire conducting wire with the earth clip, the clamping end of the earth clip with it is described
Earthing or grounding means is connected.
2. a kind of device for detecting refueling nozzle earth-return circuit as described in claim 1, which is characterized in that in the hand of outer clip
It holds and is additionally provided with finger-type structure on the lateral surface at end.
3. a kind of device for detecting refueling nozzle earth-return circuit as described in claim 1, which is characterized in that the sensor
Circuit module is connected with the digital display, described resistance value the Show Button.
4. a kind of device for detecting refueling nozzle earth-return circuit as described in claim 1, which is characterized in that alarm module packet
Include the buzzer and the LED light.
5. a kind of device for detecting refueling nozzle earth-return circuit as described in claim 1, which is characterized in that connect the report
Alert folder selects steel copper wire mixing conducting wire with the cable of the earth clip.
6. a kind of device for detecting refueling nozzle earth-return circuit as described in claim 1, which is characterized in that the copper tooth is
U-shaped structure.
7. a kind of device for detecting refueling nozzle earth-return circuit as described in claim 1, which is characterized in that the ground connection dress
Set one ground connection band iron of selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653233.5U CN208166567U (en) | 2018-05-04 | 2018-05-04 | A kind of device for detecting refueling nozzle earth-return circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820653233.5U CN208166567U (en) | 2018-05-04 | 2018-05-04 | A kind of device for detecting refueling nozzle earth-return circuit |
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| CN208166567U true CN208166567U (en) | 2018-11-30 |
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| CN201820653233.5U Active CN208166567U (en) | 2018-05-04 | 2018-05-04 | A kind of device for detecting refueling nozzle earth-return circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146769A (en) * | 2019-05-10 | 2019-08-20 | 深圳微步信息股份有限公司 | A kind of grounding wire monitoring device, EOS monitor system and method |
| CN111517261A (en) * | 2020-04-30 | 2020-08-11 | 廊坊市万蓝环保科技有限公司 | Static electricity removing device and anti-static filling appliance |
| CN111654965A (en) * | 2020-06-22 | 2020-09-11 | 广州特种机电设备检测研究院 | Electrostatic grounding device with self-detection function |
-
2018
- 2018-05-04 CN CN201820653233.5U patent/CN208166567U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146769A (en) * | 2019-05-10 | 2019-08-20 | 深圳微步信息股份有限公司 | A kind of grounding wire monitoring device, EOS monitor system and method |
| CN110146769B (en) * | 2019-05-10 | 2024-07-05 | 深圳微步信息股份有限公司 | Ground wire monitoring device, EOS monitoring system and method thereof |
| CN111517261A (en) * | 2020-04-30 | 2020-08-11 | 廊坊市万蓝环保科技有限公司 | Static electricity removing device and anti-static filling appliance |
| CN111654965A (en) * | 2020-06-22 | 2020-09-11 | 广州特种机电设备检测研究院 | Electrostatic grounding device with self-detection function |
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