CN211576291U - Static pressure type liquid level transmitter - Google Patents
Static pressure type liquid level transmitter Download PDFInfo
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- CN211576291U CN211576291U CN202020655437.XU CN202020655437U CN211576291U CN 211576291 U CN211576291 U CN 211576291U CN 202020655437 U CN202020655437 U CN 202020655437U CN 211576291 U CN211576291 U CN 211576291U
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- protection tube
- static pressure
- liquid level
- level transmitter
- fixed
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Abstract
The utility model discloses a static pressure type liquid level transmitter relates to the liquid level transmitter field. The transmitter comprises a protection tube, wherein the protection tube is vertically arranged, a sealing gland is fixed at the top of the protection tube, a ventilation cable penetrates through the middle parts of the sealing gland and the protection tube, the top of the ventilation cable is connected with an instrument device, a circuit board and a pressure core body are connected below the ventilation cable, a protective cap is sleeved outside the pressure core body, and the protective cap is fixed with the bottom of the protection tube. The transmitter is fixed in an integrated mode, the structure of the transmitter is simplified, and therefore the sealing surface is reduced, and the sealing performance is improved.
Description
Technical Field
The utility model relates to a construction tool field especially relates to a static pressure type liquid level transmitter.
Background
The static pressure type liquid level transducer is a device which converts static pressure into electric signal by adopting the piezoresistive effect of a diffused silicon or ceramic sensitive element based on the principle that the measured static pressure of liquid is in direct proportion to the height of the liquid. The liquid level sensor is mainly used for liquid level measurement of urban water supply and drainage, water treatment plants, reservoirs, rivers, oceans, oil storage tanks, and petroleum, chemical industry, electric power departments, and the measured medium can be water, oil, acidic, alkaline and viscous liquid.
The static pressure type liquid level transmitter needs to be used underwater for a long time, so the sealing requirement is strict. However, the conventional static pressure type level transmitter has three sealing surfaces, namely a pressure core body and a lower protection tube seal, an upper protection tube seal and a lower protection tube seal, and a cable outlet seal. And the more sealing surfaces, the lower the relative sealability.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an integration is fixed is provided, has simplified the changer structure to reduce sealed face static pressure formula level transmitter with increase sealing performance.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a static pressure liquid level transmitter, comprising:
the protective tube, the vertical setting of protective tube, its top is fixed with the gland, the middle part of gland and protective tube is run through there is the cable of ventilating, the top of cable of ventilating is connected the instrument device, below connection circuit board the below of circuit board is connected with the pressure core, the outside cover of pressure core is equipped with the protective cap, the protective cap is fixed with the bottom of protective tube.
The further technical proposal is that a sealing gasket is fixed inside the sealing gland.
The further technical scheme is that the sealing gland is in threaded connection with the protection pipe.
The further technical scheme is that the protective cap is in threaded connection with the protective tube.
The further technical proposal is that the instrument device is fixed above the liquid level.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the pressure core and the circuit board of the transmitter are changed into installation from bottom to top, so that the integral structure is simplified, two accessories of a lower protection tube and a pressure core gland are omitted, and the machining process and the assembly difficulty are greatly reduced.
In addition, a sealing surface is reduced in the simplified structure, so that the overall sealing performance is improved, and the product quality is integrally improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments only in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, the static pressure type liquid level transmitter comprises a protection tube 1, wherein the protection tube 1 is vertically arranged, a sealing gland 2 is fixed at the top of the protection tube 1, a ventilation cable 3 penetrates through the middle parts of the sealing gland 2 and the protection tube 1, the top of the ventilation cable 3 is connected with an instrument device 4, the lower part of the ventilation cable 3 is connected with a circuit board 5, a pressure core body 6 is connected below the circuit board 5, a protection cap 7 is sleeved outside the pressure core body 6, and the protection cap 7 is fixed with the bottom of the protection tube 1.
When the transducer is in use, the piezoresistive effect of the diffused silicon or ceramic sensitive element is adopted to convert static pressure into an electric signal. And converting the signal into a 4-20mADC standard current signal through temperature compensation and linear correction, and outputting the signal. The pressure core 6 is directly put into the liquid for use.
The pressure core body 6 and the circuit board 5 of the transmitter are changed into installation from bottom to top, so that the integral structure is simplified, two accessories of a lower protection tube 1 and a pressure cover of the pressure core body 6 are omitted, and the machining process and the assembly difficulty are greatly reduced. In addition, a sealing surface is reduced in the simplified structure, so that the overall sealing performance is improved, and the product quality is integrally improved.
In order to further improve the sealing performance and stability of the transmitter, a gasket 20 is fixed inside the gland 2. And because the measured liquid characteristic is indefinite, the instrument device 4 without the protective tube 1 is placed outside the liquid level, and is also convenient to observe.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (5)
1. A static pressure liquid level transmitter, comprising:
protection tube (1), the vertical setting of protection tube (1), its top is fixed with gland (2), the middle part of gland (2) and protection tube (1) is run through and is had ventilation cable (3), instrument device (4) are connected at the top of ventilation cable (3), below connecting wire board (5) the below of circuit board (5) is connected with pressure core (6), the outside cover of pressure core (6) is equipped with protective cap (7), protective cap (7) are fixed with the bottom of protection tube (1).
2. Static pressure level transmitter according to claim 1, characterized in that a sealing gasket (20) is fixed inside the gland (2).
3. Static pressure level transmitter according to claim 1, characterized in that the gland (2) is screwed to the protective tube (1).
4. Static pressure level transmitter according to claim 1, characterized in that the protective cap (7) is screwed to the protective tube (1).
5. Static pressure level transmitter according to claim 1, characterized in that the gauge means (4) is fixed above the liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655437.XU CN211576291U (en) | 2020-04-26 | 2020-04-26 | Static pressure type liquid level transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655437.XU CN211576291U (en) | 2020-04-26 | 2020-04-26 | Static pressure type liquid level transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211576291U true CN211576291U (en) | 2020-09-25 |
Family
ID=72527731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020655437.XU Active CN211576291U (en) | 2020-04-26 | 2020-04-26 | Static pressure type liquid level transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211576291U (en) |
-
2020
- 2020-04-26 CN CN202020655437.XU patent/CN211576291U/en active Active
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