CN209570248U - A kind of throw-in type liquid transmitter - Google Patents
A kind of throw-in type liquid transmitter Download PDFInfo
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- CN209570248U CN209570248U CN201821470397.0U CN201821470397U CN209570248U CN 209570248 U CN209570248 U CN 209570248U CN 201821470397 U CN201821470397 U CN 201821470397U CN 209570248 U CN209570248 U CN 209570248U
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Abstract
The utility model provides a kind of throw-in type liquid transmitter, including sequentially connected transmitter from top to bottom, cable and probe, it is characterized in that, the transmitter is internally provided with circuit board, the circuit board will be divided into two cavitys of pressure test chamber and signal output cavity inside transmitter, the probe bottom end is open design, the cable is internally provided with gas-guide tube, the probe is in fluid communication by the pressure test chamber inside gas-guide tube and transmitter, the pressure test is intracavitary to be provided with pressure sensor, the pressure sensor is connected with the signal input part of circuit board.The sensor being arranged in probe in the past and circuit board shifting are attached to inside transmitter by utility model device, it avoids sensor and circuit board is directly in contact with liquid, in addition probe bottom end is open design, and probe bottom end can be blocked to avoid the solids buildup of liquid internal.
Description
Technical field
The utility model relates to a kind of liquidometer more particularly to a kind of throw-in type liquid transmitters.
Background technique
Throw-in type liquid transmitter is a kind of pressure sensor for measuring liquid level.Called putting-into-type liquid level meter is by transmitter, cable
Formed with probe, when use will probe pendency in liquid pool bottom, and in liquid pool, there are certain distances, but liquid component in liquid pool
Complexity may contain strong corrosive material and solid particulate matter etc., the sensor in existing throw-in type liquid transmitter with
Measured medium directly contact and circuit board be arranged at probe, touch corrosivity especially strongly corrosion liquid when, sensing
Device is easy for being corroded, and service performance is deteriorated and even damages；Electronics when fluid to be measured temperature exceeds 80 DEG C, in circuit board
Component parameters will be impacted, thus the output signal accuracy of liquid transducer, in some instances it may even be possible to which appearance can not be defeated
Out the case where signal.
Utility model content
In order to solve existing throw-in type liquid transmitter in corrosivity and hot environment, there is reduced performance or damage
The technical issues of, the utility model provides a kind of throw-in type liquid transmitter, including sequentially connected transmitter, electricity from top to bottom
Cable and probe, which is characterized in that the transmitter is internally provided with circuit board, and the circuit board will be divided into pressure inside transmitter
Two cavitys of test chamber and signal output cavity, the probe bottom end are open design, and the cable is internally provided with gas-guide tube, institute
It states probe to be in fluid communication by the pressure test chamber inside gas-guide tube and transmitter, the pressure test is intracavitary to be provided with pressure biography
Sensor, the pressure sensor are connected with the signal input part of circuit board.Utility model device will be arranged in probe in the past
Sensor and circuit board shifting be attached to inside transmitter, avoid sensor and circuit board be directly in contact with liquid, in addition visit
Head bottom end is open design, and probe bottom end can be blocked to avoid the solids buildup of liquid internal；Utility model device measurement
The principle of liquid level is: liquid level is measured indirectly by the air pressure change inside cable, probe and transmitter, because when test liquid level hair
When changing, the liquid level inside transmitter also changes in succession, thus the volume change of transmitter internal gas, gas therewith
Pressure change, according to The Ideal-Gas Equation, it is known that (wherein, n indicates the amount of substance to PV=nRT, and T indicates absolute
Temperature, R indicate gas constant, when measuring liquid level, change because the amount of the gaseous matter inside temperature and transmitter hardly happens
Become, so PV=constant, it is possible to show that transmitter internal liquid volume becomes according to the air pressure change data inside transmitter
Change value, so as to calculate the level value of test liquid.
Preferably, the probe and cable and horizontal plane.
Preferably, the transmitter includes Transmitter body and the end cap that its both ends is detachably installed, the end cap and
Sealing ring is provided between Transmitter body.
Preferably, the throw-in type liquid transmitter further includes having liquidometer sleeve, and the probe and cable are vertical to be set
It sets in liquidometer sleeve.
Preferably, it is connected between the cable and probe, transmitter by resistance to compression connector.
Preferably, the transmitter and probe, cable are all made of stainless steel material.
Preferably, the pressure sensor is connected particular by cable with the signal input part of circuit board.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of embodiment in the utility model.
In figure:
1, it pops one's head in；2, cable；3, signal output cavity；4, circuit board；5, pressure test chamber；6, signal input part；7, pressure
Sensor；8, liquidometer sleeve.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
Embodiment 1, as shown in Figure 1:
The utility model provides a kind of throw-in type liquid transmitter, including sequentially connected transmitter, cable 2 from top to bottom
With probe 1, which is characterized in that the transmitter is internally provided with circuit board 4, and the circuit board 4 will be divided into pressure inside transmitter
3 two cavitys of power test chamber 5 and signal output cavity, 1 bottom end of the probe are open design, and the cable 2, which is internally provided with, leads
Tracheae, the probe 1 are in fluid communication by the pressure test chamber 5 inside gas-guide tube and transmitter, are set in the pressure test chamber 5
It is equipped with pressure sensor 7, the pressure sensor 7 is connected with the signal input part 6 of circuit board 4.Utility model device will be with
It is attached to inside transmitter toward sensor and the circuit board shifting being arranged in probe, avoids sensor and circuit board directly and liquid
It is in contact, bottom end of in addition popping one's head in is open design, and probe bottom end can be blocked to avoid the solids buildup of liquid internal；This is practical
The principle of new device measurement liquid level is: liquid level is measured by the air pressure change inside cable, probe and transmitter indirectly, because
When test liquid level changes, the liquid level inside transmitter also changes in succession, thus the volume of transmitter internal gas
Variation, the pressure of gas changes therewith, according to The Ideal-Gas Equation, it is known that (wherein, n indicates substance to PV=nRT
Amount, T indicates that absolute temperature, R indicate gas constant, when measuring liquid level, because of the amount of the gaseous matter inside temperature and transmitter
Change is hardly happened, so PV=constant, it is possible to obtain in transmitter according to the air pressure change data inside transmitter
Portion's liquid volume changing value, so as to calculate the level value of test liquid.
In this embodiment, specifically, the probe and cable are perpendicular to horizontal plane.Cable and probe vertical and horizontal plane
Design it is smart to improve test so that circuit board is convenient for calculating the liquid level of liquid by the volume change of transmitter internal liquid
Degree.
In this embodiment, specifically, the transmitter includes Transmitter body and the end that its both ends is detachably installed
Lid, is provided with sealing ring between the end cap and Transmitter body.The setting of sealing ring can prevent the gas inside transmitter
It is exchanged with outside, influences measuring accuracy, improve test accuracy.
In this embodiment, specifically, the throw-in type liquid transmitter, which further includes, liquidometer sleeve 8, the probe 1
Vertical setting is in liquidometer sleeve 8 with cable 2.Liquidometer sleeve can prevent the shape of test fluid structural reform modified line cable and probe
Shape and position adversely affect test result, to guarantee the accuracy of detection.
In this embodiment, specifically, being connected between the cable 2 and probe 1, transmitter by resistance to compression connector.This
Sample can guarantee the stability that cable 2 is connected with probe 1, transmitter, guarantee the accuracy of detection.
In this embodiment, specifically, the transmitter and probe 1, cable 2 are all made of stainless steel material.Transmitter, spy
The design of the stainless steel material of head and cable is so that transmitter itself has fabulous anti-corrosive properties and high temperature-proof.
In this embodiment, specifically, the pressure sensor 7 is inputted particular by the signal of cable and circuit board 4
End 6 is connected.
Working principle
When test, the variation of external testing liquid drives transmitter internal liquid level to change, thus gas inside transmitter
The volume change of body, the pressure of gas changes therewith, according to the data for the air pressure that pressure sensor detects, circuit board
The liquid level of outside liquid is calculated.
Using technical solution described in the utility model or those skilled in the art in technical solutions of the utility model
Under inspiration, similar technical solution is designed, and reaches above-mentioned technical effect, is the protection model for falling into the utility model
It encloses.
Claims (6)
1. a kind of throw-in type liquid transmitter, which is characterized in that including sequentially connected transmitter from top to bottom, cable (2) and
It pops one's head in (1), the transmitter is internally provided with circuit board (4), and the circuit board (4) will be divided into pressure test chamber inside transmitter
(5) and (3) two cavitys of signal output cavity, probe (1) bottom end are open design, and the cable (2), which is internally provided with, leads
Tracheae, the probe (1) are in fluid communication by the pressure test chamber (5) inside gas-guide tube and transmitter, the pressure test chamber
(5) it is provided with pressure sensor (7) in, the pressure sensor (7) is connected with the signal input part (6) of circuit board (4).
2. throw-in type liquid transmitter as described in claim 1, which is characterized in that the transmitter include Transmitter body with
And its end cap that both ends are detachably installed, sealing ring is provided between the end cap and Transmitter body.
3. throw-in type liquid transmitter as claimed in claim 1 or 2, which is characterized in that the throw-in type liquid transmitter is also
It include liquidometer sleeve (8), the probe (1) and the vertical setting of cable (2) are interior in liquidometer sleeve (8).
4. throw-in type liquid transmitter as claimed in claim 3, which is characterized in that the cable (2) and probe (1), pick-up
It is connected between device by resistance to compression connector.
5. throw-in type liquid transmitter as claimed in claim 4, which is characterized in that the transmitter and probe (1), cable
(2) it is all made of stainless steel material.
6. throw-in type liquid transmitter as claimed in claim 5, which is characterized in that the pressure sensor (7) is specifically logical
Cable is crossed to be connected with the signal input part (6) of circuit board (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821470397.0U CN209570248U (en) | 2018-09-07 | 2018-09-07 | A kind of throw-in type liquid transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821470397.0U CN209570248U (en) | 2018-09-07 | 2018-09-07 | A kind of throw-in type liquid transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209570248U true CN209570248U (en) | 2019-11-01 |
Family
ID=68319353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821470397.0U Active CN209570248U (en) | 2018-09-07 | 2018-09-07 | A kind of throw-in type liquid transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209570248U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358190A (en) * | 2021-05-31 | 2021-09-07 | 天水华天传感器有限公司 | Water alarm liquid level transmitter |
| CN113959524A (en) * | 2021-10-22 | 2022-01-21 | 大庆市镁龙测控技术有限公司 | Liquid level transmitter with wide and adjustable measuring range |
-
2018
- 2018-09-07 CN CN201821470397.0U patent/CN209570248U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358190A (en) * | 2021-05-31 | 2021-09-07 | 天水华天传感器有限公司 | Water alarm liquid level transmitter |
| CN113358190B (en) * | 2021-05-31 | 2023-01-17 | 天水华天传感器有限公司 | Water alarm liquid level transmitter |
| CN113959524A (en) * | 2021-10-22 | 2022-01-21 | 大庆市镁龙测控技术有限公司 | Liquid level transmitter with wide and adjustable measuring range |
| CN113959524B (en) * | 2021-10-22 | 2022-04-29 | 大庆市镁龙测控技术有限公司 | Liquid level transmitter with wide and adjustable measuring range |
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