CN203011480U - Liquid level transmitter anti-freezing device - Google Patents
Liquid level transmitter anti-freezing device Download PDFInfo
- Publication number
- CN203011480U CN203011480U CN 201220745082 CN201220745082U CN203011480U CN 203011480 U CN203011480 U CN 203011480U CN 201220745082 CN201220745082 CN 201220745082 CN 201220745082 U CN201220745082 U CN 201220745082U CN 203011480 U CN203011480 U CN 203011480U
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- Prior art keywords
- liquid level
- liquid
- level sensor
- pipe
- tracheae
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- 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.)
- Withdrawn - After Issue
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model belongs to the technical field of liquid level measurement and particularly relates to a liquid level transmitter anti-freezing device. The liquid level transmitter anti-freezing device solves the problems that accumulated water in a liquid level measuring device in the prior art freezes when temperature is too low, the size of the water expands, and a sensor is damaged. In order to solve the problems in the prior art, the technical scheme includes that the liquid level transmitter anti-freezing device comprises a liquid level sensor, an air pipe and a liquid pipe are arranged inside and outside the liquid level sensor in a nesting mode, a top cover is arranged at the top end of the liquid pipe, a small hole is formed in the side wall of the top end of the air pipe, the length of the lower end of the air pipe is longer than that of the liquid pipe, and the lower end of the air pipe is connected with the liquid level sensor. The liquid level sensor is protected through the inner pipe so as to avoid remaining of measured liquid in the liquid level sensor, and the size of the measured liquid expands when environmental temperature is lower than zero DEG C and accordingly the liquid level sensor is damaged. Meanwhile, by means of the technology, usage amount of the liquid level sensors can be greatly in a mass mode, replacement fees are reduced, waste of manpower resource is avoided, and economic benefits are improved.
Description
Technical field
The utility model belongs to the level gauging technical field, is specifically related to a kind of fluid level transmitter defroster.
Background technology
Fluid level transmitter can be high to volume, the liquid of liquid, weight is carried out Measurement accuracy and transmission.The army that is stationed in northern field needs waterr transporting vehicle that domestic water is provided.According to present technology, transmitter is inner after measurement can residual a small amount of liquid.The open-air temperature in the north in winter is extremely low, when environment temperature below zero degrees celsius, when the water in the waterr transporting vehicle water pot is used up, the liquid volume that remains in transmitter increases, responsive part to sensor produces pressure, finally cause the damage to a certain degree of sensor, the performance of fluid level transmitter is impacted.Now therefore existing a lot of transmitters damage.Do not have at present special technology to carry out the anti-frost protection of fluid level transmitter, the fluid level transmitter that more renews after damage.Not only consumptive material consuming time, also waste of manpower.The liquid level emasuring device of prior art comprises shell, fluid level transmitter and transmission circuit, fluid level transmitter and transmission circuit all are arranged in cavity pocket of outer cover, cavity is arranged in shell, the fluid level transmitter mounting head upwards, institute's liquid of surveying from the aperture inflow at mounting head center, enters cavity in container, directly acts on sensor, sensor sends hydraulic signal to transmission circuit, and transmission circuit converts hydraulic signal to voltage or current signal transfers out from output terminal.Therefore, after surveying the liquid emptying in container, in the transmitter cavity, liquid can't be discharged.If the liquid of surveying is water, when zero degrees celsius was following, this partially liq (being water) can freeze when environment temperature, and volumetric expansion damages sensor.
The utility model content
The purpose of this utility model is to provide a kind of fluid level transmitter defroster, can freeze when temperature is too low with the ponding that solves in the prior art liquid level emasuring device, and volumetric expansion, the problem of damage sensor.
the problem that exists for solving prior art, the technical scheme that the utility model provides is: a kind of fluid level transmitter defroster, comprise liquid level sensor, its special character is: the tracheae and the liquid pipe that also comprise inside and outside nested setting, the top of liquid pipe is provided with top cover, the liquid bore is greater than the tracheae external diameter, described tracheae is arranged in the liquid pipe and tracheae is connected the top and all is connected with top seal with the liquid pipe, the top sidewall of described tracheae is provided with aperture, the long drain pipe in the lower end of described tracheae and being connected with liquid level sensor, the lower end of liquid pipe is connected with baffle plate, leave the gap between baffle plate and tracheae outer wall, offer air admission hole on the lower end outer wall of described liquid pipe.
The lower end of above-mentioned tracheae is connected by nut with liquid level sensor.
The utility model has following advantage and effect with respect to prior art:
The utility model is avoided residual fluid to be measured in liquid level sensor by inner tube air conservation liquid level sensor, in environment temperature volumetric expansion during lower than zero degrees celsius, damages liquid level sensor.On the other hand, owing to adopting the technology, the use amount that can save in a large number liquid level sensor reduces renewal cost, avoids waste of human resource, increases economic efficiency.
Description of drawings
Fig. 1 is the utility model contour structures schematic diagram;
Fig. 2 is the utility model inner structure schematic diagram;
Fig. 3 is the A-A cut-open view of Fig. 2;
Fig. 4 is the B-B cut-open view of Fig. 2;
Wherein, 1-liquid level sensor, 2-tracheae, 3-liquid pipe, 4-top cover, 5-aperture, 6-baffle plate, 7-gap, 8-air admission hole, 9-nut.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated:
with reference to Fig. 1, a kind of fluid level transmitter defroster, comprise liquid level sensor 1, and the tracheae 2 of inside and outside nested setting and liquid pipe 3, the top of liquid pipe 3 is provided with top cover 4, liquid pipe 3 internal diameters are greater than tracheae 2 external diameters, described tracheae 2 is arranged in liquid pipe 3 and the top of tracheae 2 and liquid pipe 3 all is tightly connected with top cover 4, the top sidewall of described tracheae 2 is provided with aperture 5, the long drain pipe 3 in the lower end of described tracheae 2 and the connection of being connected with liquid level sensor, the lower end of liquid pipe 3 is connected with baffle plate 6, leave gap 7 between baffle plate 6 and tracheae 2 outer walls, this gap is liquid turnover gap, offer air admission hole 8 on the lower end outer wall of described liquid pipe 3, air admission hole when air admission hole 8 is no liquid.The lower end of above-mentioned tracheae 2 is connected by nut 9 with liquid level sensor 1, nut 9 one ends and tracheae 2 welding, and the thread end of the other end and liquid level sensor 1 is connected.
Liquid is advanced in liquid-in pipe 3 by the outside, gas compression pressure in liquid pipe 3 increases, pressure is delivered in tracheae 2 by the aperture 5 of the arbitrary shape that tracheae 2 tops are offered, pressure gas acts on liquid level sensor 1, liquid level sensor 1 is converted to electric signal with pressure, and electric signal becomes through Inner section processing of circuit delivers to the outside.Liquid can't Fluid Contacting level sensor 1 under tracheae 2 gaseous tension effects, but by air as the medium transmission of pressure, act on liquid level sensor 1.Fluid to be measured can't be stranded in liquid level sensor 1 like this, damages liquid level sensor 1 thereby namely can't expand under low-temperature condition.
The utility model theoretical foundation is liquid pressure formula:
,
P0---standard atmospheric pressure wherein, 1.03kg/cm2
ρ---fluid density
H---liquid height, cm
Atmospheric pressure in P---transmitter, Pa
Can find out the testing liquid height within the specific limits according to this formula, the utility model can be measured its height value, and the concrete upper limit is decided according to the atmospheric pressure value in fluid level transmitter.
Claims (2)
1. fluid level transmitter defroster, comprise liquid level sensor (1), it is characterized in that: the tracheae (2) and the liquid pipe (3) that also comprise inside and outside nested setting, the top of liquid pipe (3) is provided with top cover (4), liquid pipe (3) internal diameter is greater than tracheae (2) external diameter, described tracheae (2) is arranged in liquid pipe (3) and the top of tracheae (2) and liquid pipe (3) all is tightly connected with top cover (4), the top sidewall of described tracheae (2) is provided with aperture (5), the long drain pipe in lower end (3) of described tracheae (2) and be connected 1 with liquid level sensor) connect, the lower end of liquid pipe (3) is connected with baffle plate (6), leave gap (7) between baffle plate (6) and tracheae (2) outer wall, offer air admission hole (8) on the lower end outer wall of described liquid pipe (3).
2. a kind of fluid level transmitter defroster according to claim 1, it is characterized in that: the lower end of described tracheae (2) is connected by nut (9) with liquid level sensor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220745082 CN203011480U (en) | 2012-12-31 | 2012-12-31 | Liquid level transmitter anti-freezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220745082 CN203011480U (en) | 2012-12-31 | 2012-12-31 | Liquid level transmitter anti-freezing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011480U true CN203011480U (en) | 2013-06-19 |
Family
ID=48603066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220745082 Withdrawn - After Issue CN203011480U (en) | 2012-12-31 | 2012-12-31 | Liquid level transmitter anti-freezing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033236A (en) * | 2012-12-31 | 2013-04-10 | 西安工业大学 | Anti-freezing device of liquid level transmitter |
-
2012
- 2012-12-31 CN CN 201220745082 patent/CN203011480U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033236A (en) * | 2012-12-31 | 2013-04-10 | 西安工业大学 | Anti-freezing device of liquid level transmitter |
| CN103033236B (en) * | 2012-12-31 | 2016-06-15 | 西安工业大学 | Fluid level transmitter defroster |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130619 Effective date of abandoning: 20160615 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |