CN101806696A - Liquid density measurement device - Google Patents
Liquid density measurement device Download PDFInfo
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- CN101806696A CN101806696A CN 201010140865 CN201010140865A CN101806696A CN 101806696 A CN101806696 A CN 101806696A CN 201010140865 CN201010140865 CN 201010140865 CN 201010140865 A CN201010140865 A CN 201010140865A CN 101806696 A CN101806696 A CN 101806696A
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- moving plate
- supporter
- liquid density
- density measurement
- measurement device
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Abstract
The invention discloses a liquid density measurement device, comprising a hollow supporter with openings at two ends thereof, wherein the upper end and the lower end of the supporter are connected with upper and lower rigid movable sheets respectively through capsules which are axially-flexible and radially-rigid cylinders, and the supporter, the capsules, the upper movable sheet and the lower movable sheet form a closed hollow cavity, which is internally provided with a rigid rod with two ends thereof connected with the upper movable sheet and the lower movable sheet respectively; and the rigid rod is connected with a stress measurement device. Different pressures are applied to the upper and lower movable sheets when the device is vertically immersed in liquid to be measured, the measured stress of the rigid rod is the pressure difference between the upper movable sheet and the lower movable sheet, thus the density of the liquid can be calculated; the device has simple structure and accurate measurement.
Description
Technical field
The present invention relates to a kind of liquid density sensor, relate in particular to a kind of liquid density measurement device.
Background technology
At present, liquid density sensor has varied, mechanical pick-up device is arranged, electronic sensor etc. is arranged.
Liquid density sensor of the prior art or complex structure, or measure not accurate enough.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, measure liquid density measurement device accurately.
The objective of the invention is to be achieved through the following technical solutions:
Liquid density measurement device of the present invention, the supporter that comprises hollow and both ends open, the top and bottom two of described supporter are connected with the last moving plate and the following moving plate of rigidity respectively by bellows, described bellows is the cylindrical body of axial elasticity and radial rigidity, and described supporter, bellows, last moving plate and following moving plate constitute airtight cavity;
The inside of described cavity is provided with rigid rod, and the two ends of described rigid rod are connected with following moving plate with the described moving plate of going up respectively;
Described rigid rod is connected with stress measuring device.
As seen from the above technical solution provided by the invention, liquid density measurement device of the present invention, owing to comprise the supporter of hollow and both ends open, the top and bottom two of supporter are connected with the last moving plate and the following moving plate of rigidity respectively by bellows, bellows is the cylindrical body of axial elasticity and radial rigidity, and supporter, bellows, last moving plate and following moving plate constitute airtight cavity; The inside of cavity is provided with rigid rod, and the two ends of rigid rod are connected with following moving plate with last moving plate respectively; Rigid rod is connected with stress measuring device.When this device is vertical when immersing in the testing liquid, last moving plate is different with the pressure that following moving plate is subjected to, and the stressed pressure differential that is the two of the rigid rod that measures can calculate density of liquid in view of the above, and is simple in structure, measurement is accurate.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of liquid density measurement device of the present invention.
Embodiment
Liquid density measurement device of the present invention, its preferable embodiment be as shown in Figure 1:
The supporter 5 that comprises hollow and both ends open, the top and bottom two of supporter 5 are connected with the last moving plate 3 and the following moving plate 7 of rigidity respectively by bellows 4, bellows 4 is the cylindrical body of axial elasticity and radial rigidity, and supporter 5, bellows 4, last moving plate 3 and following moving plate 7 constitute airtight cavity;
The inside of cavity is provided with rigid rod 2, and the two ends of rigid rod 2 are connected with following moving plate 7 with last moving plate 3 respectively;
Rigid rod 2 is connected with stress measuring device.
Stress measuring device can be the electromagnetism device for measuring force, also can be mechanical device for measuring force, also can be other device for measuring force.
The machinery device for measuring force can comprise flexible sheet 6, and rigid rod 2 passes the middle part of flexible sheet 6 and fixedly connected, fixedlys connected with supporter 5 in the edge of flexible sheet 6.
The area of last moving plate 3 and following moving plate 7 can equate, also can be unequal.
Also comprise metering circuit 1, stress measuring device is electrically connected with metering circuit 1.
Concrete metering circuit 1 can be located at the inside of cavity, metering circuit 1 and outside wired or wireless the connection; Metering circuit 1 also can be located at the outside of cavity, and metering circuit 1 is connected with stress measuring device is wired or wireless.
Also in conjunction with the accompanying drawings the present invention is described in detail below by specific embodiment:
Again referring to Fig. 1, the present invention is full immersion type liquid density measuring equipment, this device uses a supporter, the rigidity moving plate that two areas are S has only axially by two can Free Transform and press in radially can bearing or bellows or the diaphragm and supporter connection of external pressure, after this bindiny mechanism forms, has certain enclosure space in inside, external pressure did not leak in this space can be born, two rigidity moving plates connect by a rigid connecting rod in inside, the distance that guarantees two rigidity moving plates is a steady state value L, by bellows, moving plate, the mechanism that connecting link is formed can axially move in certain distance automatically along supporter.
When using, vertically installs in this device, after this densitometer all immerses liquid, and a pressure P that on last moving plate and following moving plate, produces owing to the liquid existence respectively
OnAnd P
Down,, thereby P is arranged because two moving plates have certain distance L
Down-P
On=ρ gL, two the suffered buoyancy difference of moving plate F=ρ gLS, if the inside at supporter is fixed on rigid rod on the supporter by a force measurement device spare, axial force F=ρ gLS that rigid rod is suffered, thus ρ=F/gLS is arranged, g is a local gravitational acceleration, L is the distance of two rigidity moving plates, and S is the area of two rigidity moving plates, and g, L, S are fixed values, as long as accurately measure the F value, can obtain the accurate density p of liquid.
The stressed metering system of rigid rod has a variety of.For example rigid rod is connected with supporter by a flexible sheet, comes ergometry with respect to the displacement of supporter, also can come ergometry etc. by electromagnetic force by the measurement elastic body.
Metering circuit can be placed in the cavity of supporter, also can be placed on other outer places of cavity, and cavity inner cable line is drawn, encapsulation process when going between out supporter.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (7)
1. liquid density measurement device, it is characterized in that, the supporter that comprises hollow and both ends open, the top and bottom two of described supporter are connected with the last moving plate and the following moving plate of rigidity respectively by bellows, described bellows is the cylindrical body of axial elasticity and radial rigidity, and described supporter, bellows, last moving plate and following moving plate constitute airtight cavity;
The inside of described cavity is provided with rigid rod, and the two ends of described rigid rod are connected with following moving plate with the described moving plate of going up respectively;
Described rigid rod is connected with stress measuring device.
2. liquid density measurement device according to claim 1 is characterized in that, described stress measuring device is the electromagnetism device for measuring force.
3. liquid density measurement device according to claim 1, it is characterized in that, described stress measuring device is mechanical device for measuring force, described mechanical device for measuring force comprises flexible sheet, described rigid rod passes the middle part of described flexible sheet and fixedly connected, fixedlys connected with described supporter in the edge of described flexible sheet.
4. liquid density measurement device according to claim 1 is characterized in that, the described area of going up moving plate and following moving plate equates.
5. according to claim 1,2 or 3 described liquid density measurement devices, it is characterized in that comprise metering circuit, described stress measuring device is electrically connected with described metering circuit.
6. liquid density measurement device according to claim 5 is characterized in that described metering circuit is located at the inside of described cavity, described metering circuit and outside wired or wireless the connection.
7. liquid density measurement device according to claim 5 is characterized in that described metering circuit is located at the outside of described cavity, and described metering circuit is connected with described stress measuring device is wired or wireless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010140865XA CN101806696B (en) | 2010-04-02 | 2010-04-02 | Liquid density measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010140865XA CN101806696B (en) | 2010-04-02 | 2010-04-02 | Liquid density measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101806696A true CN101806696A (en) | 2010-08-18 |
| CN101806696B CN101806696B (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010140865XA Active CN101806696B (en) | 2010-04-02 | 2010-04-02 | Liquid density measurement device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101806696B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900929A (en) * | 2014-03-28 | 2014-07-02 | 范明军 | Portable input type wireless liquid densimeter |
| CN105588784A (en) * | 2014-10-23 | 2016-05-18 | 北京纳米能源与系统研究所 | A continuous measurement device for liquid densities |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6662653B1 (en) * | 2002-09-23 | 2003-12-16 | Smar Research Corporation | Sensor assemblies and methods of securing elongated members within such assemblies |
| CN201122145Y (en) * | 2007-11-23 | 2008-09-24 | 重庆九天测控仪器制造有限公司 | Integral fluid density measuring instrument |
| CN201653850U (en) * | 2010-04-02 | 2010-11-24 | 范明军 | Liquid density sensor |
-
2010
- 2010-04-02 CN CN201010140865XA patent/CN101806696B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6662653B1 (en) * | 2002-09-23 | 2003-12-16 | Smar Research Corporation | Sensor assemblies and methods of securing elongated members within such assemblies |
| CN201122145Y (en) * | 2007-11-23 | 2008-09-24 | 重庆九天测控仪器制造有限公司 | Integral fluid density measuring instrument |
| CN201653850U (en) * | 2010-04-02 | 2010-11-24 | 范明军 | Liquid density sensor |
Non-Patent Citations (1)
| Title |
|---|
| 20011231 党选举等 <一种扩散硅压力式密度静态测量系统> 38-40 1-7 , 第7期 2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900929A (en) * | 2014-03-28 | 2014-07-02 | 范明军 | Portable input type wireless liquid densimeter |
| CN105588784A (en) * | 2014-10-23 | 2016-05-18 | 北京纳米能源与系统研究所 | A continuous measurement device for liquid densities |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101806696B (en) | 2011-11-09 |
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Effective date of registration: 20151104 Address after: 100018 Beijing city Chaoyang District Gao Yang tree building 3 South Lane West Patentee after: Beijing Junyou Xinye Technology Co., Ltd. Address before: 101101, No. 6, unit 612, building 28, West Horse Village, Yongshun Town, Beijing, Tongzhou District Patentee before: Fan Mingjun |