CN211602088U - Liquid level transducer - Google Patents
Liquid level transducer Download PDFInfo
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- CN211602088U CN211602088U CN202020410341.7U CN202020410341U CN211602088U CN 211602088 U CN211602088 U CN 211602088U CN 202020410341 U CN202020410341 U CN 202020410341U CN 211602088 U CN211602088 U CN 211602088U
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- pressure sensor
- level transmitter
- probe
- capillary tube
- capillary
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Abstract
The utility model discloses a liquid level transmitter, which comprises a probe, the top of probe is connected and is measured the diaphragm, the probe sets up one and holds the chamber, hold chamber and capillary connection, the capillary other end is connected with pressure sensor, be full of the transmission medium in the capillary. The utility model is suitable for a medium container or open-type jar body are measured, not only can work in high temperature, corrosive liquid, and maintain convenient, simple manufacture.
Description
Technical Field
The utility model relates to a corrosion-resistant high temperature resistance liquid level detection device especially relates to a liquid level transmitter.
Background
In industrial production, the volume or level of the liquid in the container is often checked to determine the amount of the liquid in the container.
In particular, in the fields of chemical industry, electric power, metallurgy, pharmacy and the like, the liquid contained in the container is high-temperature or corrosive liquid.
In actual working occasions, a drop-in type liquid level transmitter is generally adopted, and a sensor transmits a detection result to an analysis mechanism through a cable so as to obtain the liquid level of liquid. However, the conventional drop-in type transmitter is prone to water seepage, so that the measurement is inaccurate, errors in liquid level detection are large when the temperature is high or liquid to be measured is corrosive, and the drop-in type liquid level transmitter is short in service life, so that inconvenience is brought to users.
Therefore, the technical personnel in the field strive to develop a novel liquid level transmitter which is suitable for measuring a medium container or an open tank body, can work in high-temperature and corrosive liquid, and is convenient to maintain and simple to manufacture.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a novel liquid level transmitter is provided, this changer can work in high temperature, the environment that has corrosivity, and simple manufacture, and convenient operation is suitable for operating under the multiple scene.
In order to achieve the above object, the utility model provides a liquid level transmitter, which comprises a probe, the measurement diaphragm is connected on the top of probe, the probe sets up one and holds the chamber, hold chamber and capillary connection, the capillary other end is connected with pressure sensor, be full of the transmission medium in the capillary.
Preferably, the measuring diaphragm is conical, and the conical surface is corrugated;
the top end of the probe is in a corrugated cone shape matched with the measuring diaphragm, and the conical surface corrugated type is adopted, so that the contact area between the measuring diaphragm and liquid to be measured is increased, and the detection result is further improved.
Preferably, a sealing element is arranged between the pressure sensor and the capillary tube, the pressure sensor is arranged in the base, and the sealing element can not only transmit pressure but also effectively avoid leakage of transmission media.
Preferably, the capillary tube is provided with a material injection pipe close to the sealing element, one end of the material injection pipe is provided with a material injection hole, and the material injection hole is arranged to facilitate subsequent maintenance of the transmitter and replacement of the transmission medium.
Preferably, the pressure sensor is fixed in the base through a locking piece, the pressure sensor transmits an electric signal to the amplification display circuit board through a lead, and the electric signal is processed and amplified to improve the accuracy of a detection result.
Preferably, the periphery of the pressure sensor is sleeved with a sealing ring, the sealing ring is arranged to prevent the leakage of the transmission medium, and the circuit components are protected.
Preferably, the amplification display circuit board, the lead, the sealing element and the pressure sensor are packaged in the shell, and the sensitive element is packaged in the explosion-proof box, so that the protection of the element is facilitated, the resistance to external interference is facilitated, and the measurement accuracy is improved.
Preferably, the capillary has a diameter of 2.5mm to 3 mm.
Preferably, the transmission medium is silicone oil, and the silicone oil has a small thermal expansion coefficient and a small compressible volume, so that stable transmission of pressure is facilitated.
The utility model has the advantages that: the liquid guide silicone oil in the measuring diaphragm transmits pressure to the pressure sensor through the capillary tube by utilizing the characteristic that the diaphragm is easy to deform under stress, the pressure sensor transmits an electric signal to the amplifier in the transmitter base, the liquid level is monitored in real time by outputting a current value, the liquid guide silicone oil liquid level measuring device is suitable for measuring a medium container or an open tank body, can work in high-temperature and corrosive liquid, and is convenient to manufacture, cost-saving and convenient to maintain.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic diagram of a partially enlarged structure of a according to an embodiment of the present invention.
Fig. 3 is a schematic view of an assembly structure of a measuring diaphragm and a probe according to an embodiment of the present invention.
Reference numbers in the figures: 1 is a measuring diaphragm; 2 is a probe; 201 is a cavity; 3 is a transmission medium; 4 is a capillary tube; 5 is a material injection hole; 6 is a sealing ring; 7 is a lead; 8 is a sealing element; 9 is a pressure sensor; 10 is a locking piece; 11 is an enlarged display circuit board; 12 is a shell; 13 is a base; and 14 is a material injection pipe.
Detailed Description
The invention will be further described with reference to the following figures 1 to 3 and examples:
as shown in fig. 1 to 3, a liquid level transmitter includes a probe 2, and a measuring diaphragm 1 is connected to a top end of the probe 2, and a metal with good ductility, such as a copper sheet, is used as the diaphragm. The probe 2 is provided with a cavity 201, and the probe can be made of 316L or 304 stainless steel. The measuring diaphragm 1 is conical, the conical surface is corrugated, the top end of the probe 2 is corrugated conical and matched with the measuring diaphragm 1, and the measuring diaphragm 1 is matched with the cavity 201 and then welded to form a whole. The cavity 201 is connected with a capillary 4, and the diameter of the capillary 4 is 2.5mm-3 mm. The other end of the capillary 4 is connected with a pressure sensor 9, and the pressure sensor 9 can adopt a diffused silicon sensor. The capillary 4 is filled with the transmission medium 3, the transmission medium 3 is silicon oil, and the silicon oil has low viscosity-temperature coefficient and high compression resistance, so that the method is suitable.
The capillary tube 4 is also provided with a material injection tube 14 close to the sealing element 8, one end of the material injection tube 14 is provided with a material injection hole 5, and the material injection hole 5 is arranged to facilitate filling of the transfer medium, subsequent maintenance, replacement of the transfer medium 3 and the like. If the transmission medium 3 is made of silicone oil, a professional silicone oil sealing cone can be used for plugging, and if other transmission media 3 are used, corresponding sealing elements are used for plugging.
A sealing element 8 is arranged between the pressure sensor 9 and the capillary tube 4, and the sealing element 8 is usually a polytetrafluoroethylene gasket which has small pressure drop and good sealing effect. The pressure sensor 9 is disposed in the base 13. The periphery of the pressure sensor 9 is sleeved with an O-shaped sealing ring 6, the pressure sensor 9 is fixed in the base 13 through a locking piece 10, and the pressure sensor 9 transmits an electric signal to the amplification display circuit board 11 through a lead 7.
The enlarged display circuit board 11, the lead 7, the seal 8 and the pressure sensor 9 are enclosed in a housing 12.
The utility model discloses the theory of operation: firstly, a transmission medium 3 is packaged, the diameter of a capillary 4 is 2.5mm-3mm, the capillary is suitable for being filled in a vacuumizing mode, a material injection hole 5 is connected with a vacuumizing device, the transmission medium 3 is introduced when the capillary 4 is vacuumized and is blocked by a special sealing cone, and air cannot appear in the transmission medium 3 so as to avoid influencing the measurement precision. Then, the probe is placed at the bottom of the liquid to be detected, the pressure of the liquid to be detected is transmitted to the pressure sensor 9 through the transmission medium 3, the pressure sensor 9 transmits the electric signal to the amplification display circuit board 11, and the amplification display circuit board 11 amplifies, analyzes and outputs the detection value. The utility model relates to a liquid level transmitter, capillary 4 both can be that the hose is made portably, and capillary 4 also can be the tubular metal resonator, direct mount in a certain fixed position.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A liquid level transmitter, characterized by: the device comprises a probe (2), wherein the top end of the probe (2) is connected with a measuring membrane (1), the probe (2) is provided with an accommodating cavity (201), the accommodating cavity (201) is connected with a capillary tube (4), the other end of the capillary tube (4) is connected with a pressure sensor (9), and the capillary tube (4) is filled with a transfer medium (3).
2. The level transmitter of claim 1, wherein: the measuring diaphragm (1) is conical, and the conical surface is corrugated;
the top end of the probe (2) is in a corrugated conical shape matched with the measuring diaphragm (1).
3. The level transmitter of claim 1, wherein: a sealing element (8) is arranged between the pressure sensor (9) and the capillary tube (4), and the pressure sensor (9) is arranged in a base (13).
4. The level transmitter of claim 3, wherein: the capillary tube (4) is close to the sealing element (8) and is further provided with a material injection pipe (14), and one end of the material injection pipe (14) is provided with a material injection hole (5).
5. The level transmitter of claim 3, wherein: the pressure sensor (9) is fixed in the base (13) through a locking piece (10), and the pressure sensor (9) transmits an electric signal to the amplification display circuit board (11) through a lead (7).
6. The level transmitter of claim 1, wherein: the periphery of the pressure sensor (9) is sleeved with a sealing ring (6).
7. The level transmitter of claim 5, wherein: the magnifying display circuit board (11), the wires (7), the seal (8) and the pressure sensor (9) are enclosed in a housing (12).
8. The level transmitter of claim 1, wherein: the diameter of the capillary tube (4) is 2.5mm-3 mm.
9. The level transmitter of claim 1, wherein: the transmission medium (3) is silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020410341.7U CN211602088U (en) | 2020-03-26 | 2020-03-26 | Liquid level transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020410341.7U CN211602088U (en) | 2020-03-26 | 2020-03-26 | Liquid level transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211602088U true CN211602088U (en) | 2020-09-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020410341.7U Active CN211602088U (en) | 2020-03-26 | 2020-03-26 | Liquid level transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211602088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088135A (en) * | 2021-11-08 | 2022-02-25 | 山东大学 | Novel device and method for rapidly measuring concrete construction vibration parameters |
-
2020
- 2020-03-26 CN CN202020410341.7U patent/CN211602088U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114088135A (en) * | 2021-11-08 | 2022-02-25 | 山东大学 | Novel device and method for rapidly measuring concrete construction vibration parameters |
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