CN105806545B - Wall-mounted minute-pressure difference measuring device - Google Patents
Wall-mounted minute-pressure difference measuring device Download PDFInfo
- Publication number
- CN105806545B CN105806545B CN201410849210.8A CN201410849210A CN105806545B CN 105806545 B CN105806545 B CN 105806545B CN 201410849210 A CN201410849210 A CN 201410849210A CN 105806545 B CN105806545 B CN 105806545B
- Authority
- CN
- China
- Prior art keywords
- frame
- hanging board
- wall hanging
- pressure
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The present invention discloses a kind of wall-mounted minute-pressure difference measuring device, including sink (1) and pressure-measuring pipe (2), further include the wall hanging board (3) vertically placed and frame (4), sink (1) and pressure-measuring pipe (2) are fixed in frame (4), the bottom of sink (1) is parallel with lower frame (42) of frame (4), upper side frame (41) in frame (4) is also fixed with the level meter parallel with upper side frame (41) (5), further include fixing axle (6) and water transfer flattening mechanism (7), fixing axle (6) is vertical with the wall hanging board (3), and one end of fixing axle (6) is fixedly connected with wall hanging board (3), water transfer flattening mechanism (7) part is connect with wall hanging board (3), another part is connect with frame (4), and this one end of frame (4) can be made to move up and down.Convenience, high certainty of measurement, simple and efficient to handle is placed in the minute-pressure difference measuring device of the present invention, installation.
Description
Technical field
The invention belongs to device for pressure measurement technical field, especially a kind of high certainty of measurement, wall simple and efficient to handle
Hanging minute-pressure difference measuring device.
Background technology
For having the engineering of tight requirements, such as civil air defense constructions and installations, the air pressure difference for measuring many positions is needed, such as：To ensure
Superpressure value in engineering needs that differential pressure measurement device is arranged in three proofings duty room, and one end communicates with superpressure testing tube, the other end and
Interior communicates；To monitor the filtration resistance of coarse filter, need to differential pressure measurement device be set in straining chamber, monitor air before and after coarse filter
Pressure difference, to determine whether to clean or replace coarse filter.And sometimes for the pressure difference of measurement, often very little is extremely important, and it is right
Required precision is high.As civil air defense constructions and installations superpressure value is not more than 100Pa.
Currently, being typically that U-tube differential manometer is arranged in the interior walls of three proofings duty room, with monitoring works superpressure value.This
The reason of sample is arranged is that wall-mounted differential manometer is not take up the interior space, securely and reliably, but due to engineering superpressure value very little, is reacted to
In the fluid column difference of U-tube differential manometer, causes measurement error very big, cannot be satisfied requirement.Such as the pressure of maximum value ability 100Pa
Difference reacts the height difference for there was only 10mm water columns on U-tube differential manometer, and the error in reading for being visually difficult to the 1mm differentiated is exactly 10Pa,
That is error 10%, in this way error be unacceptable.
For the pressure difference for measuring small, it is possible to use tilting micromanometer, as shown in Figure 1 comprising sink and lower mouth and sink
The pressure-measuring pipe that bottom communicates, sink horizontal sectional area be much larger than pressure-measuring pipe horizontal sectional area, sink top seal, only stay one externally
Communication port, sink top communication port and pressure-measuring pipe can connect under test gas.In order to improve sensitivity, reduce error in reading, pressure measurement
The axial oblique angle in vertical direction with more than 0 degree less than 90 degree of pipe, to elongate fluid column.Its measuring principle can be by following formula table
Show：
L/h=(sin α+A2/A1)-1,
In Fig. 1 and above formula,
L --- reading scale divisions,
H --- fluid change total height,
α --- inclined tube angle with horizontal plane,
A2 --- inclined tube sectional area,
A1 --- cup type linker sectional area,
As can be seen from the above equation, delta pressure readings are exaggerated (sin α+A2/A1)-1If A2<<A1, then liquid-column height put
Big 1/sin α times, the angles α are smaller, and amplification factor is bigger.Therefore this pressure gauge is particularly suitable for measuring very low pressure.
However, due to adjust wide opening sink levelness and the zeroing of pressure-measuring pipe scale, operation before tilting micromanometer use
Complexity, reading is slower, cannot meet the requirement of rapid pressure adjusting；Moreover, its volume is big, it is necessary to have mounting platform, use
In limited by levelling of the land degree it is very big, zeroing range it is small, the positions such as multidirectional valve also frequent occurrence leak and block, operation,
Use complexity.
Therefore, problem of the existing technology：Minute-pressure difference measuring device is installed, is inconvenient for use, it is difficult to meet quick, easy
Monitor the requirement of slight pressure difference.
Invention content
The purpose of the present invention is to provide a kind of wall-mounted minute-pressure difference measuring devices, place convenience, high certainty of measurement, operation
It is simple and efficient.
Realize that the technical solution of the object of the invention is：A kind of wall-mounted minute-pressure difference measuring device, including sink is under
The pressure-measuring pipe that mouth is communicated with bottom of gullet, the axial direction of pressure-measuring pipe further include the wall hanging board vertically placed in vertical direction with acute angle
And frame, plane where the frame is parallel with wall hanging board, the wall hanging board is flat to the projection plane of horizontal plane with pressure-measuring pipe
Row, the frame includes the upper side frame and lower frame being mutually parallel, and the sink and pressure-measuring pipe are fixed in frame, and water
The bottom of slot is parallel with the lower frame of frame, and the level meter parallel with upper side frame is also fixed in the upper side frame of the frame,
The level meter is parallel with wall hanging board, further includes fixing axle and water transfer flattening mechanism, and the fixing axle is vertical with the wall hanging board, and
One end of fixing axle is fixedly connected with wall hanging board, any that the frame can be on wall hanging board is in the plane parallel with wall hanging board
Rotation.
Compared with prior art, the present invention its remarkable advantage：
1, high certainty of measurement：The amplification principle of tilting micromanometer is made full use of, and adjusting is simple accurate, so as to obtain
Higher measurement accuracy；
2, simple and efficient to handle：Included level meter, it is simple and efficient that instrument installs leveling；
3, installation is placed convenient：Whole device is fixed using wall hanging board, it is convenient to which entire measuring device is hung over into wall
On, it is not required to other installation space, facilitates placement.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Description of the drawings
Fig. 1 is existing tilting micromanometer structural schematic diagram.
Fig. 2 is the wall-mounted minute-pressure difference measuring device structural schematic diagram of the present invention.
In figure, 1 sink, 2 pressure-measuring pipes, 3 wall hanging boards, 4 frames, including frame upper side frame and frame lower frame, 5 level meters, 6
Fixing axle, 7 water transfer flattening mechanisms, including fixed column and adjusting bolt, 8 scales, 9 fluid reservoirs.
Specific implementation mode
As shown in Fig. 2, the wall-mounted minute-pressure difference measuring device of the present invention, including sink 1 and lower mouth are communicated with bottom of gullet
Pressure-measuring pipe 2, the axial direction of pressure-measuring pipe further include the wall hanging board 3 vertically placed and frame 4, the frame 4 in vertical direction with acute angle
Place plane is parallel with wall hanging board 3, and the wall hanging board 3 is parallel with the projection plane of pressure-measuring pipe 2 to horizontal plane, and the frame 4 wraps
The upper side frame and lower frame being mutually parallel are included, the sink 1 and pressure-measuring pipe 2 are fixed in frame 4, and the bottom of sink 1
It is parallel with the lower frame of frame 4, the level meter 5 parallel with upper side frame, the water are also fixed in the upper side frame of the frame 4
Level 5 is parallel with wall hanging board 3, any that the frame 4 can be on wall hanging board 3 is in the plane internal rotation parallel with wall hanging board 3.
The frame 4 can be on wall hanging board 3 a little can be achieved in the plane internal rotation parallel with wall hanging board 3：
Further include fixing axle 6 and water transfer flattening mechanism 7, the fixing axle 6 is vertical with the wall hanging board 3, and one end of fixing axle 6 and wall hanging
Plate 3 is fixedly connected, the other end pass through frame 4 and with 4 loose fit of frame, the part of the water transfer flattening mechanism 7 connects with wall hanging board 3
It connects, another part is connect with frame 4, and can make frame 4 around fixing axle 6 in the plane internal rotation parallel with wall hanging board 3.
Instrument first wants level-off, and in level, reading is only accurately only instrument.Instrument carries level meter, ensures instrument
Device is correctly installed；Instrument is connected between measuring point, and it is the rubber tube or soft plastics pipe of 10mm to select internal diameter.It is when measuring gas
When positive pressure, connecting tube is connected on to the high-pressure side of instrument, and low-pressure end is allowed to lead to air, reading is positive pressure value.It is when measuring gas
When negative pressure, one end of connection rubber tube is connected to low-pressure end, and high-pressure side is led into air, reading is negative pressure value.When measurement gas two
When point pressure difference, then sebific duct being connected respectively at high pressure, low pressure both ends, being connected respectively with two measuring points of high-low pressure, reading is pressure difference.
Tilt differential manometer and may replace U-tube differential manometer in many occasions, high certainty of measurement, economy and durability, it is easy to operate, save space,
It can be widely applied to all kinds of places of air micro pressure measuring.
Further include scale 8, the scale 8 can be moved axially along the axial setting of pressure-measuring pipe 2 along pressure-measuring pipe 2.
Scale 8 can be moved axially along pressure-measuring pipe 2, and zero is facilitated to adjust, and keep operation faster simple.
The water transfer flattening mechanism 7 includes fixed column and adjusting bolt, and the fixed column is vertical with the wall hanging board 3, one end
It is fixedly connected with wall hanging board 3, the other end is prominent to 4 direction of frame, and the adjusting bolt is parallel with the wall hanging board 3, and vertical
It is passed down through 4 upper side frame of the frame, lower end is contacted with the fixed column, the adjusting bolt and 4 upper side frame of the frame
Screw-thread fit.
The water transfer flattening mechanism 7 of such structure, it is simple and reliable for structure, it is easy to adjust, it is correctly installed convenient for device.
Further include a fluid reservoir 9,9 bottom of the fluid reservoir is connected with the suitable for reading of the pressure-measuring pipe.Such structure can be with
Prevent maloperation from leading to measure liquid from pressure-measuring pipe spilling.
The most handy organic glass of the sink 1, pressure-measuring pipe 2, frame 4 and scale 8 makes, convenient for reading.It is contained in sink
1, red meter specially oil of the indicator solution in pressure-measuring pipe 2 using not volatile and density (0.87) less than water, to improve precision
With convenient for reading.
Claims (4)
1. a kind of wall-mounted minute-pressure difference measuring device, including pressure-measuring pipe (2) that sink (1) and lower mouth are communicated with bottom of gullet, it surveys
The axial direction of pressure pipe further includes the wall hanging board (3) vertically placed and frame (4), frame (4) place in vertical direction with acute angle
Plane is parallel with wall hanging board (3), and the wall hanging board (3) is parallel with the projection plane of pressure-measuring pipe (2) to horizontal plane, the frame
(4) include the upper side frame and lower frame being mutually parallel, the sink (1) and pressure-measuring pipe (2) are fixed in frame (4), and
The bottom of sink (1) is parallel with the lower frame of frame (4), is also fixed in the upper side frame of the frame (4) flat with upper side frame
Capable level meter (5), the level meter (5) is parallel with wall hanging board (3), and what the frame (4) can be on wall hanging board (3) a little exists
The plane internal rotation parallel with wall hanging board (3)；
It is characterized in that, the frame (4) can be on wall hanging board (3) a little in the plane internal rotation parallel with wall hanging board (3)
It is realized in：Further include fixing axle (6) and water transfer flattening mechanism (7), the fixing axle (6) is vertical with the wall hanging board (3),
And one end of fixing axle (6) is fixedly connected with wall hanging board (3), the other end pass through frame (4) and with frame (4) loose fit, it is described
Water transfer flattening mechanism (7) part is connect with wall hanging board (3), and another part is connect with frame (4), and frame (4) can be made around fixation
Axis (6) is in the plane internal rotation parallel with wall hanging board (3).
2. wall-mounted minute-pressure difference measuring device according to claim 1, it is characterised in that：Further include scale (8), the mark
Ruler (8) is axially arranged along pressure-measuring pipe (2), and can be moved axially along pressure-measuring pipe (2).
3. wall-mounted minute-pressure difference measuring device according to claim 1 or 2, it is characterised in that：The water transfer flattening mechanism (7)
Including fixed column and adjusting bolt, the fixed column is vertical with the wall hanging board (3), and one end is fixedly connected with wall hanging board (3), separately
One end is prominent to frame (4) direction, and the adjusting bolt is parallel with the wall hanging board (3), and passes through the frame straight down
(4) upper side frame, lower end are contacted with the fixed column, the adjusting bolt and the frame (4) upper side frame screw-thread fit.
4. wall-mounted minute-pressure difference measuring device according to claim 3, it is characterised in that：Further include a fluid reservoir (9), institute
Fluid reservoir (9) bottom is stated with the suitable for reading of the pressure-measuring pipe to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410849210.8A CN105806545B (en) | 2014-12-30 | 2014-12-30 | Wall-mounted minute-pressure difference measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410849210.8A CN105806545B (en) | 2014-12-30 | 2014-12-30 | Wall-mounted minute-pressure difference measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105806545A CN105806545A (en) | 2016-07-27 |
| CN105806545B true CN105806545B (en) | 2018-07-31 |
Family
ID=56420589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410849210.8A Expired - Fee Related CN105806545B (en) | 2014-12-30 | 2014-12-30 | Wall-mounted minute-pressure difference measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105806545B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441698B (en) * | 2016-11-24 | 2018-04-27 | 中国石油大学(北京) | The unstable pressure difference meter of high pressure and its use and check method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2108915U (en) * | 1991-10-21 | 1992-07-01 | 施春燕 | Sheet chattock gauge |
| JPH0510842A (en) * | 1991-07-02 | 1993-01-19 | Fuji Electric Co Ltd | Method for stably generating micro differential pressure |
| CN2765166Y (en) * | 2005-01-18 | 2006-03-15 | 辽宁工程技术大学 | Electronic micro-pressure instrument |
| CN1751231A (en) * | 2003-02-20 | 2006-03-22 | 株式会社富士金 | Super-precise micro-differential pressure measuring device and super-precise differential pressure measuring device |
| CN202393554U (en) * | 2011-12-12 | 2012-08-22 | 美的集团有限公司 | Fixing structure of gas wall-hanging stove pressure gauge |
| CN103868641A (en) * | 2014-03-21 | 2014-06-18 | 刘剑飚 | Micro differential pressure sensor |
| CN204373834U (en) * | 2014-12-30 | 2015-06-03 | 中国人民解放军理工大学 | Wall-hanging micro-pressure-difference measurement mechanism |
-
2014
- 2014-12-30 CN CN201410849210.8A patent/CN105806545B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0510842A (en) * | 1991-07-02 | 1993-01-19 | Fuji Electric Co Ltd | Method for stably generating micro differential pressure |
| CN2108915U (en) * | 1991-10-21 | 1992-07-01 | 施春燕 | Sheet chattock gauge |
| CN1751231A (en) * | 2003-02-20 | 2006-03-22 | 株式会社富士金 | Super-precise micro-differential pressure measuring device and super-precise differential pressure measuring device |
| CN2765166Y (en) * | 2005-01-18 | 2006-03-15 | 辽宁工程技术大学 | Electronic micro-pressure instrument |
| CN202393554U (en) * | 2011-12-12 | 2012-08-22 | 美的集团有限公司 | Fixing structure of gas wall-hanging stove pressure gauge |
| CN103868641A (en) * | 2014-03-21 | 2014-06-18 | 刘剑飚 | Micro differential pressure sensor |
| CN204373834U (en) * | 2014-12-30 | 2015-06-03 | 中国人民解放军理工大学 | Wall-hanging micro-pressure-difference measurement mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105806545A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Grace et al. | Discharge coefficients of small-diameter orifices and flow nozzles | |
| CN105004663A (en) | Gas cylinder volume expansion accurate measurement device | |
| CN104748801B (en) | A kind of water tank goes out the flow measurement device of stream | |
| CN102221387B (en) | Pressure plate instrument capable of directly measuring volume change of soil sample | |
| CN105806545B (en) | Wall-mounted minute-pressure difference measuring device | |
| CN106949942A (en) | The calibration method of its measurement oil tank outage of oil truck capacity calibrating installation and application | |
| CN106338357B (en) | Inverse U-shaped tube differential pressure gauge and method | |
| CN206192571U (en) | Type of falling U pipe differential gauge | |
| CN113049066B (en) | Calibrating device for liquid level meter | |
| CN102967347A (en) | Level gauge calibration device | |
| CN104748903B (en) | Liquid-gas conversion pressure measurement device and pressure measurement device with synchronous electrical measurement and digital display for tests | |
| CN108106698B (en) | On-site calibration device and calibration method for vehicle-mounted single-water-tank type oilfield water meter | |
| CN204373834U (en) | Wall-hanging micro-pressure-difference measurement mechanism | |
| CN201535657U (en) | Thread connector inner sealing taper surface diameter measuring device | |
| CN207570533U (en) | Combined type multiple spot horizontal measuring instrument | |
| RU2476830C2 (en) | Test setup for gas flowmeters/counters | |
| CN201130177Y (en) | Double-differential pressure type water content meter | |
| CN212133791U (en) | Novel liquid level meter | |
| RU2571303C1 (en) | Test plant for flow meters-gas counters | |
| CN207763780U (en) | A kind of vehicle-mounted single water tank type oil field water meter field calibration device | |
| CN100561138C (en) | A kind of flow measurement method that is used for shunt measurement device | |
| CN204731142U (en) | A kind of gas cylinder volumetric expansion device for accurately measuring | |
| CN204514523U (en) | Liquid gas shift pressure tester and the experiment pressure tester being with simultaneous electrical measurement digital display | |
| CN105987735A (en) | High-precision differential pressure type liquid level measurement device and application thereof | |
| CN104751710B (en) | A kind of row's formula pressure tester of the touring electrical measurement digital display of band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180731 Termination date: 20191230 |