CN202648751U - Liquid level sensor inside fuel tank - Google Patents
Liquid level sensor inside fuel tank Download PDFInfo
- Publication number
- CN202648751U CN202648751U CN 201120519224 CN201120519224U CN202648751U CN 202648751 U CN202648751 U CN 202648751U CN 201120519224 CN201120519224 CN 201120519224 CN 201120519224 U CN201120519224 U CN 201120519224U CN 202648751 U CN202648751 U CN 202648751U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- level sensor
- fuel tank
- outlet
- inlet tube
- 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 - Lifetime
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- Level Indicators Using A Float (AREA)
Abstract
The utility model discloses a liquid level sensor inside a fuel tank, and the liquid level sensor comprises an inlet pipe and an outlet pipe that are connected below the head part. The key points of the liquid level sensor are that a liquid level rod is arranged below the head part, a U-shaped circuit having resistors R in series connection is arranged inside the liquid level rod, reed pipes are arranged between resistors that are an the same horizontal level, a floater having a magnetic body is sleeved on the liquid level rod, and the floater can slide up and down along the liquid level rod. The utility model is characterized in that the structure is simple, the magnetic body arranged inside the floater, the contact points inside the reed pipes are attracted by the magnetic body to be connected with each other, therefore different electric current signals can be acquired, the height of the liquid level can be calculated, the precision of the electric signal method is high, and the service life of the liquid level sensor is long.
Description
Technical field
The utility model relates to a kind of liquid sensor.
Background technology
In the fuel tank of vehicle, be provided with the liquid level sensor of measuring fuel head.Liquid level sensor is notified the residue situation of human pilot oil plant by transmission liquid level information.For large-scale haulage vehicle, liquid level sensor is general, and what adopt be mechanical structure, by float rotate torsion spring come trigger pip judge oil plant how much.But, the mechanical structure of this kind, complex structure, the precision of measurement is lower.
The utility model content
The content of this practical information provides the interior liquid level sensor of a kind of fuel tank simple in structure, that measuring accuracy is high.
To achieve these goals, by the following technical solutions: liquid level sensor in a kind of fuel tank, comprise the inlet tube and the outlet that are connected to lower head, it is characterized in that: described lower head also is provided with the liquid level bar, be provided with the U-shaped circuit that is in series with resistance R in the liquid level bar, be between the resistance of same level and be connected with tongue tube, cover has the float with magnet on the liquid level bar, and float can slide up and down along the liquid level bar.
In order to strengthen the intensity of sensor, the below of described inlet tube, outlet and liquid level bar all links to each other with the chassis.
Be drawn to the dregs of fuel tank bottom during for fear of oil suction, the oil plant suction outlet of described outlet is positioned at the bottom of outlet, the top on chassis, and the oil plant entrance of described inlet tube is arranged at the bottom of inlet tube and communicates with the perforate on chassis.
The utility model is simple in structure, is provided with magnet in the float, attracts the closure of contact in the tongue tube to obtain different current signals by magnet, thereby calculates the height of liquid level, adopts the method precision of electric signal higher, and long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit diagram in the liquid level bar among Fig. 1.
Among the figure, part 1 is inlet port, and part 2 is escape hole, and part 3 is inlet tube, and part 4 is outlet, and part 5 is the liquid level bar, and part 6 is float, and part 7 is the oil plant suction outlet, and part 8 is the oil plant entrance, and part 9 is the chassis, and part 10 is tongue tube.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
As depicted in figs. 1 and 2, liquid level sensor in a kind of fuel tank comprises head, be provided with inlet port 1 and the escape hole 2 of oil plant on the head, the below of head is connected with inlet tube 3, outlet 4 and liquid level bar 5, and wherein inlet port 1 links to each other with inlet tube 3, and escape hole 2 links to each other with outlet 4.Inlet tube, outlet and three tie points of liquid level bar are equilateral triangle and arrange, be provided with the U-shaped circuit that is in series with a plurality of resistance R in the liquid level bar, be in the tongue tube 10 that is provided with connection between the resistance of both sides of same level, cover has inside to be provided with the float 6 of magnet on the liquid level bar, and float can slide up and down along the liquid level bar.
The below of inlet tube 3, outlet 4 and liquid level bar 5 all links to each other with chassis 9, and such structure is so that sensor has the stronger force intensity that is subjected to, and the bottom of inlet tube is provided with oil plant entrance 8, and the bottom of outlet is provided with oil plant suction outlet 7.Oil plant enters fuel tank from oil plant entrance 8, is sucked out fuel tank from oil plant suction outlet 7.When the height of pasta changed, float can change with the variation of liquid level, and the magnet in the float attracts two contacts in the tongue tube, and it is fitted, and the U-shaped circuit is short-circuited in the position at float place like this.Electric current in the difference of location of short circuit, circuit is different, and liquid level sensor passes to external meters with current signal thus, shows corresponding fluid level condition.
Claims (3)
1. liquid level sensor in the fuel tank, comprise the inlet tube and the outlet that are connected to lower head, it is characterized in that: described lower head also is provided with the liquid level bar, be provided with the U-shaped circuit that is in series with resistance R in the liquid level bar, be between the resistance of same level and be connected with tongue tube, cover has the float with magnet on the liquid level bar, and float can slide up and down along the liquid level bar.
2. liquid level sensor in the fuel tank as claimed in claim 1, it is characterized in that: the below of described inlet tube, outlet and liquid level bar all links to each other with the chassis.
3. liquid level sensor in the fuel tank as claimed in claim 1 or 2, it is characterized in that: the oil plant suction outlet of described outlet is positioned at the bottom of outlet, the top on chassis, and the oil plant entrance of described inlet tube is arranged at the bottom of inlet tube and communicates with the perforate on chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120519224 CN202648751U (en) | 2011-12-13 | 2011-12-13 | Liquid level sensor inside fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120519224 CN202648751U (en) | 2011-12-13 | 2011-12-13 | Liquid level sensor inside fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648751U true CN202648751U (en) | 2013-01-02 |
Family
ID=47417846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120519224 Expired - Lifetime CN202648751U (en) | 2011-12-13 | 2011-12-13 | Liquid level sensor inside fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648751U (en) |
-
2011
- 2011-12-13 CN CN 201120519224 patent/CN202648751U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |