CN201041503Y - Liquid level detecting device - Google Patents
Liquid level detecting device Download PDFInfo
- Publication number
- CN201041503Y CN201041503Y CNU2007200104171U CN200720010417U CN201041503Y CN 201041503 Y CN201041503 Y CN 201041503Y CN U2007200104171 U CNU2007200104171 U CN U2007200104171U CN 200720010417 U CN200720010417 U CN 200720010417U CN 201041503 Y CN201041503 Y CN 201041503Y
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- liquid
- tube
- liquid level
- storage tank
- sampling
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Abstract
The utility model relates to a liquid level detection device which belongs to the liquid level measurement field and realizes the liquid level detection through the detecting and the sampling of the weight or the buoyancy of liquid. The liquid level detection device realizing the liquid level detection through the detecting and the sampling of the weight of the liquid comprises a weighing sensor, a sampling tube, a sampling tube clamping apparatus, a guide sleeve, an installation support, an installing bolt, an outer protection tube and a catheter. The liquid level detection device realizing the liquid level detection through the detecting and the sampling of the buoyancy of the liquid comprises the weighing sensor, the float tube, the guide sleeve, the float tube clamping apparatus, the installation support, the installing bolt and the guide sleeve, and the device also comprises the sampling tube and the catheter when being arranged outside a storage tank. The utility model has high detection precision, fast response speed, low cost, and convenient on-site installation and maintenance.
Description
Technical Field
The utility model belongs to the liquid level measurement field, in particular to liquid level detection device.
Technical Field
In many production departments of national economy, especially in the fields of petroleum and chemical production, precise detection and automatic control of the liquid level of a storage tank are important problems related to product quality, energy-saving management and safe production. Therefore, with the continuous development of production and science and technology, various detection methods and various series measuring instruments appear in the field of storage tank liquid level detection, the automation and intelligence levels are higher and higher, and the functions are more complete.
The liquid level detection technology for storage tanks is a measurement technology for measuring the position of a gas-liquid, liquid-liquid or liquid-solid interface, and integrates the detection technology, the computer technology, the electronic technology, the automatic control technology and the like into a whole. The research aims to accurately measure the liquid level parameters in the storage tank and provide reliable data for production and management. It includes the study of the measurement object (the measured medium and its container and environmental conditions), the measurement method and the measuring instrument.
The liquid level detection of the storage tank relates to various fields of industrial production, and the specific working environment is different, so that different requirements are provided for a detection instrument. The measuring instruments widely used at present are classified into two types, namely contact measurement and non-contact measurement according to the contact form of a liquid level sensing element and a measured liquid. The contact type measurement comprises a steel belt float type liquid level measuring instrument, a differential pressure type liquid level measuring instrument, a capacitance type liquid level measuring instrument and a magnetostriction liquid level meter; non-contact measurement includes ultrasonic level measurement instruments, radar level gauges, and fiber optic level gauges.
However, the existing liquid level detection device has high cost, inconvenient use and installation and complex structure.
Disclosure of Invention
To the problem that exists among the prior art, the utility model provides a liquid level detection sensor through the weight or the buoyancy of detecting sample liquid, realizes liquid level detection.
The liquid level detection device for realizing liquid level detection by detecting the weight of sampled liquid comprises a weighing sensor, a sampling tube clamp, a guide sleeve, a mounting support, a mounting bolt, a protection tube and a liquid guide tube. Wherein weighing sensor passes through construction bolt and links to each other with the sampling tube, and the cover has the uide bushing on the sampling tube, and the sampling tube binding clasp is direct to be connected with the sampling tube, and the sampling tube adds the protection tube outward, and the protection tube passes through the erection bracing to be connected with the stock solution jar wall, and the sampling tube passes through liquid intercommunication in catheter and the stock solution jar.
The liquid level detection device for realizing liquid level detection by detecting buoyancy of sampled liquid comprises a weighing sensor, a float pipe, a guide sleeve, a float pipe clamp, a mounting support, a mounting bolt and a guide sleeve, and further comprises a sampling pipe and a liquid guide pipe when the detection device is arranged outside a liquid storage tank. The device comprises a weighing sensor, a floater pipe, a guide sleeve, a floater pipe clamp, a liquid storage tank, a liquid guide pipe and a liquid storage tank, wherein the weighing sensor is connected with the floater pipe through a mounting bolt; when the detection device is arranged in the liquid storage tank, the float pipe is directly arranged in the detection liquid.
The utility model discloses select weighing sensor's maximum range to be W 0 When it is taken out
As the weight of the sampling tube, and
the measuring range is used as the measuring scale of the sampled liquid, and the design of the detection device meets the following requirement
In the formula: h is 0 -the maximum liquid level in the reservoir.
That is, the radius of the sampling tube satisfies the following formula:
the utility model discloses a working process is: when the liquid level is 0, adjusting the weighing sensor to a zero point by adjusting a detection bridge of the weighing sensor, namely, eliminating the weight of the sampling tube by the bridge balance adjustment of the weighing sensor; when liquid is filled in the liquid storage tank, the liquid level detection device for realizing liquid level detection by detecting the weight of sampled liquid utilizes the principle of a communicating vessel, the liquid level of a sampling tube of the liquid level detection device is kept the same as the liquid level of the liquid storage tank, the weight of the sampled liquid is directly acted on a sensor, and the weight of the liquid measured by a weighing sensor at the moment is
W＝πr 2 hγ (3)
In the formula: w is the weight measured by the weighing sensor; r-inner radius of the sampling tube;
h-liquid level height in the liquid storage tank; gamma-the severity of the liquid in the reservoir.
I.e. the liquid level is as high as
The liquid level detection device for realizing liquid level detection by detecting the buoyancy of the sampled liquid utilizes the principle of liquid buoyancy, the buoyancy borne by the float pipe directly acts on the weighing sensor, the weighing sensor detects the buoyancy at the moment, the calculation formula of the buoyancy is completely the same as that of the formula (3), and the calculation formula of the deduced liquid level height is also completely the same as that of the formula (4).
The utility model discloses it is fast to detect the precision height, response speed, and is convenient with low costs and on-the-spot installation maintenance.
Drawings
FIG. 1 shows three configurations of a liquid level detection apparatus for performing liquid level detection by detecting the weight of a sampled liquid,
(a) Is a schematic structural view of a first liquid level detecting device,
(b) Is a schematic structural view of the second liquid level detection device,
(c) Is a structural schematic diagram of a third liquid level detection device;
FIG. 2 shows two structures of a liquid level detection device for detecting the liquid level by detecting the buoyancy of the sampled liquid,
(a) Is a structural schematic diagram of an external liquid level detection device,
(b) Is a schematic structural diagram of a built-in liquid level detection device.
FIG. 1-mounting bolts; 2, mounting a support; 3-a tension-compression type weighing sensor; 4-lower mounting bolts; 5-a clamper; 6-sampling tube; 7-a guide sleeve; 8-an outer protective tube; 9-a liquid storage tank; 10-mounting and supporting a protection pipe; 11-a valve; 12-a hose connector; 13-soft liquid guide tube, 14-soft siphon tube; 15-siphon clamping device, 16-float tube 17-liquid guide tube, 18-sampling tube mounting support.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 shows three configurations of a liquid level detecting apparatus for detecting a liquid level by detecting the weight of a sampled liquid.
In fig. 1 (a), the pull-press type weighing sensor 3 is connected with the mounting support 2 through the upper mounting bolt 1, the other end of the mounting support 2 is connected with the outer wall of the liquid storage tank 9, the sampling tube 6 is connected with the outer wall of the liquid storage tank 9 through the clamp 5, the lower mounting bolt 4 is connected with the pull-press type weighing sensor 3, the sampling tube 6 is provided with the guide sleeve 7, in order to enhance the anti-interference capability of the detection device, the sampling tube 6 is additionally provided with the protection tube 8, the protection tube 8 is connected with the outer wall of the liquid storage tank 9 through the protection tube mounting support 10, the bottom of the protection tube 8 is opened, one end of the soft liquid guide tube 13 is connected with the sampling tube 6 through the opening at the bottom of the protection tube 8, the other end of the soft liquid guide tube 13 is connected to the liquid bottom of the liquid storage tank 9 through the soft tube connector 12, wherein the valve 11 is arranged on the soft liquid guide connector 12, and the flow control in the liquid transmission process is realized.
In fig. 1 (b), the pull-press type weighing sensor 3 is connected with the mounting support 2 through the upper mounting bolt 1, the other end of the mounting support 2 is connected with the outer wall of the liquid storage tank 9, the sampling tube 6 is connected with the pull-press type weighing sensor 3 through the clamp 5, the lower mounting bolt 4 is connected with the pull-press type weighing sensor 3, the sampling tube 6 is provided with the guide sleeve 7, in order to enhance the anti-interference capability of the detection device, the sampling tube 6 is additionally provided with the protection tube 8, the protection tube 8 is connected with the outer wall of the liquid storage tank 9 through the protection tube mounting support 10, the soft siphon 14 is fixed on the outer wall of the liquid storage tank 9 and the mounting support 1 through two sets of siphon clamping devices 15, so that liquid in the liquid storage tank 9 is communicated with liquid in the sampling tube 6.
Drawing and pressing formula weighing sensor 3 is connected with installation support 2 through last construction bolt 1 in figure 1 (c), 2 other ends of installation support and the 9 inner wall connections of liquid storage pot, sampling tube 6 passes through binding clasp 5, lower construction bolt 4 is connected with drawing and pressing formula weighing sensor 3, install uide bushing 7 on the sampling tube 6, in order to strengthen detection device's interference killing feature, sampling tube 6 plus protection tube 8, protection tube 8 passes through protection tube installation support 10 and the 9 inner wall connections of liquid storage pot, 8 bottoms of protection tube seal, its lower part side is opened there is a aperture, soft catheter 13 is through this aperture, with liquid intercommunication in liquid storage pot 9 and the sampling tube 6.
Fig. 2 shows two structures of the liquid level detection device for realizing liquid level detection by detecting the buoyancy of the sampled liquid.
In the drawing 2 (a), a pull-press type weighing sensor 3 is connected with an installation support 2 through an upper installation bolt 1, the other end of the installation support 2 is connected with the outer wall of a liquid storage tank 9, a float tube 16 is connected with the pull-press type weighing sensor 3 through a clamp 5 and a lower installation bolt 4, a guide sleeve 7 is installed on the float tube, the float tube is arranged in a sampling tube 6, the sampling tube 6 is connected with the outer wall of the liquid storage tank 9 through a sampling tube installation support 18, the bottom of the sampling tube 6 is sealed, a small hole is formed in the side face of the lower portion of the sampling tube 6, a liquid guide tube 17 penetrates through the small hole in the side face of the sampling tube 6, liquid in the liquid storage tank 9 is communicated with liquid in the sampling tube 6, a valve 11 is installed on the liquid guide tube 17, and flow control in the liquid transmission process is achieved.
In the figure 2 (b), the pull-press type weighing sensor 3 is connected with the mounting support 2 through the upper mounting bolt 1, the other end of the mounting support 2 is connected with the inner wall of the liquid storage tank 9, the float pipe 16 is connected with the pull-press type weighing sensor 3 through the clamping device 5 and the lower mounting bolt 4, the guide sleeve 7 is mounted on the float pipe, the guide sleeve 7 is directly mounted on the inner wall of the liquid storage tank 9, and the float pipe is directly arranged in liquid in the liquid storage tank 9.
The maximum measuring ranges of the weighing sensors selected in the five examples are W 0 =30kg and the liquid gravity in the tank is gamma =1200kg/m 3 And the maximum height h =6m of the liquid in the liquid storage tank, the radius of the liquid sampling tube can be determined as shown in the formula (2)
Namely, in the above five examples, the liquid tubes have a radius of 30mm and an inner diameter of 60mm.
Claims (8)
1. The utility model provides a liquid level detection device, its characterized in that the device includes weighing sensor, sampling tube, installation support, protection tube and liquid guide pipe, and wherein weighing sensor links to each other with the sampling tube, and the sampling tube adds the protection tube outward, and the protection tube passes through the installation support to be connected with the liquid storage pot wall, and the sampling tube passes through liquid guide pipe and liquid intercommunication in the liquid storage pot.
2. The liquid level detecting device as claimed in claim 1, wherein the protective tube is connected to the outer wall of the liquid storage tank through a mounting support, and the bottom of the protective tube is open, one end of the liquid guiding tube is connected to the sampling tube through the opening at the bottom of the protective tube, and the other end of the liquid guiding tube is connected to the bottom of the liquid storage tank through a connector, wherein a valve is mounted on the flexible connector.
3. The liquid level detecting device as claimed in claim 1, wherein the protective tube is connected to the wall of the liquid storage tank by a mounting support, and is connected to the outer wall of the liquid storage tank, and the liquid guiding tube is a soft siphon tube.
4. A liquid level sensing apparatus according to claim 3, wherein the soft siphon tube is fixed to the outer wall of the liquid storage tank and the mounting support.
5. The liquid level detecting device as claimed in claim 1, wherein the protective tube is connected to the inner wall of the liquid storage tank by a mounting support, the protective tube is closed at the bottom and has a small hole on its lower side through which the liquid guiding tube connects the liquid in the liquid storage tank with the liquid in the sampling tube.
6. The liquid level detection device is characterized by comprising a weighing sensor, a float pipe and a mounting support, wherein the weighing sensor is respectively connected with the mounting support and the float pipe, and the mounting support is connected with a liquid storage tank.
7. The liquid level detecting device as claimed in claim 6, further comprising a sampling tube connected to the liquid reservoir and connected to an outer wall of the liquid reservoir, wherein the float tube is disposed in the sampling tube, the sampling tube is closed at a bottom thereof, and has a small hole formed in a lower side thereof through which the liquid in the liquid reservoir is communicated with the liquid in the sampling tube, and wherein the valve is mounted on the liquid guide tube.
8. The liquid level detecting device as claimed in claim 6, further comprising a guide sleeve, wherein the mounting support is connected to the liquid reservoir and is connected to an inner wall of the liquid reservoir, the guide sleeve is fitted over a float tube, the guide sleeve is connected to the inner wall of the liquid reservoir, and the float tube is disposed in the liquid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200104171U CN201041503Y (en) | 2007-01-31 | 2007-01-31 | Liquid level detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200104171U CN201041503Y (en) | 2007-01-31 | 2007-01-31 | Liquid level detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041503Y true CN201041503Y (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200104171U Expired - Fee Related CN201041503Y (en) | 2007-01-31 | 2007-01-31 | Liquid level detecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201041503Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080979A (en) * | 2010-11-18 | 2011-06-01 | 杭州中美华东制药有限公司 | Method for measuring liquid level of fermentation tank |
| CN102252730A (en) * | 2011-06-10 | 2011-11-23 | 厦门大学 | Software tank liquid level measuring instrument and method |
| CN102359923A (en) * | 2011-06-20 | 2012-02-22 | 东莞广州中医药大学中医药数理工程研究院 | Device for measuring density and liquid level of liquid medicine on line in process of producing Chinese medicines |
| CN103134564A (en) * | 2013-01-30 | 2013-06-05 | 北京七星华创电子股份有限公司 | Liquid level measurement device |
| CN108613717A (en) * | 2018-05-14 | 2018-10-02 | 蚌埠市华威电子科技有限公司 | A kind of accurate radiator water level sensor |
| CN110470360A (en) * | 2019-09-17 | 2019-11-19 | 潘国民 | A kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device and its application method of one |
-
2007
- 2007-01-31 CN CNU2007200104171U patent/CN201041503Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080979A (en) * | 2010-11-18 | 2011-06-01 | 杭州中美华东制药有限公司 | Method for measuring liquid level of fermentation tank |
| CN102080979B (en) * | 2010-11-18 | 2012-04-25 | 杭州中美华东制药有限公司 | Method for measuring liquid level of fermentation tank |
| CN102252730A (en) * | 2011-06-10 | 2011-11-23 | 厦门大学 | Software tank liquid level measuring instrument and method |
| CN102252730B (en) * | 2011-06-10 | 2013-03-27 | 厦门大学 | Software tank liquid level measuring instrument and method |
| CN102359923A (en) * | 2011-06-20 | 2012-02-22 | 东莞广州中医药大学中医药数理工程研究院 | Device for measuring density and liquid level of liquid medicine on line in process of producing Chinese medicines |
| CN103134564A (en) * | 2013-01-30 | 2013-06-05 | 北京七星华创电子股份有限公司 | Liquid level measurement device |
| CN103134564B (en) * | 2013-01-30 | 2016-02-03 | 北京七星华创电子股份有限公司 | A kind of liquid level emasuring device |
| CN108613717A (en) * | 2018-05-14 | 2018-10-02 | 蚌埠市华威电子科技有限公司 | A kind of accurate radiator water level sensor |
| CN110470360A (en) * | 2019-09-17 | 2019-11-19 | 潘国民 | A kind of observation of liquid level, monitoring, alarming are in the liquid level emasuring device and its application method of one |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20110131 |