CN104764556A - Automatic exhaust type multi-pressure measuring pipe manometer - Google Patents
Automatic exhaust type multi-pressure measuring pipe manometer Download PDFInfo
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- CN104764556A CN104764556A CN201510152598.0A CN201510152598A CN104764556A CN 104764556 A CN104764556 A CN 104764556A CN 201510152598 A CN201510152598 A CN 201510152598A CN 104764556 A CN104764556 A CN 104764556A
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- piezometric tube
- pressure measuring
- exhaust
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- manometer
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Abstract
The invention discloses an automatic exhaust type multi-pressure measuring pipe manometer. The manometer comprises two or more pressure measuring pipes, a flow divider connected with two or more pressure measuring pipes, damping elements for connecting the pressure measuring pipes and the flow divider and an air pump connected with the flow divider. According to the automatic exhaust type multi-pressure measuring pipe manometer, the damping elements are adopted for conducting Pressed flow-limiting air supply on the pressure measuring pipes, and the automatic exhaust type synchronous exhaust function of one-pump multi-pipe is achieved. By the adoption of electric exhaust mode, the blank of electronic control automatic exhaust type multi-pipe manometer in an automatic control system is made up for. The automatic exhaust type multi-pressure measuring pipe manometer serves as a fluid mechanical testing experiment teaching instrument, the experiment problems are solved by creatively utilizing a fluid mechanics principle, the study interest of students can be motivated, the innovation consciousness of students is inspired, and the manometer is beneficial to cultivating of the innovation capability and has a very good teaching effect.
Description
Technical field
The present invention relates to experimental measurement field, be specifically related to a kind of from exhaust many piezometric tube measuring cell.
Background technology
Hydraulics and fluid mechanics are main specialized core courses of the many specialties of engineering and polytechnic universities.Modern hydraulics is based upon experiment, theory, calculates on three large pillars, and therefore, experiment is content indispensable in teaching link.Wherein, piezometric tube is one of pressure measuring instrument the most conventional in hydraulics and hydrodynamic calculations process, it is the simplest a kind of Liquid Column Manometer, with the transparent straight glass tube of a diameter 8-10mm, lower end and the gauge point of pipe are tightly connected by flexible pipe, the upper end open of pipe communicates with air, according to the height that fluid column in piezometric tube rises, just can obtain the pressure of this point.In education experiment, liquid is generally water, i.e. piezometric head, and it is total potential energy of the unit weight water gaging represented to the height of reference field with piezometric surface.Piezometric tube is arranged on rack of measuring pressure usually, in an actual experiment, often need the pressure signal simultaneously measuring multiple position in experimental channel or water tank, therefore experimentally need multiple piezometric tube to be arranged on side by side on rack of measuring pressure by same level height, form one group of row's formula many piezometric tube measuring cell.
As from the foregoing, row's formula many piezometric tube measuring cell is traditional pressure tester conventional in education experiment or laboratory examination.Often there are bubble or gas column are detained communicating pipe bottom piezometric tube and between pressure tap, the measuring error of piezometric tube can be caused, must drain to the delay bubble of communicating pipe for this reason, subject claims this be piezometric tube exhaust.Its method utilizes ear washing bulb (blowing up a balloon) to inflate draining to every root piezometric tube, then the water pressure gravity flow of measuring point is utilized to flow in piezometric tube, its bubble be communicated with in tubule is taken away, until be full of continuous print liquid below liquid level in communicating pipe and piezometric tube with current.This bleeding can manage it to single tube, but the measuring cell to multitube, the especially piezometric tube of tens of, experimenter often feels to be difficult to bear.How to solve this trouble, there is no good method at present.
The present inventor once trial air pump carries out the method for electricity exhaust, solves this difficult problem, but needs to arrange a little air pump to each root piezometric tube, could realize the synchronous degassing function of many piezometric tube.This is because every root piezometric tube measuring point pressure is different, some piezometric tube measuring point pressure is very low, even close to atmospheric pressure, in the case, if adopt the mode of multitube one pump to be vented, as long as so there is the pressure measurement port of wherein one or a few piezometric tube to discharge air-flow.Cause gas circuit short circuit, the main channel upward pressure of gas circuit is die-offed, and causes other piezometric tube all not arrange water, does not thus reach synchronous exhaust effect.So pump one pipe from exhaust many piezometric tube measuring cell, just the present inventor used in laboratory, can imagine the measuring cell of 20 pipes, and with 20 little air pumps, this device can only a use once in a while, does not have propagation and employment to be worth.That only has a pump multitube just has using value from exhaust multilimb manometer, is worth research and development.
Along with the development of modern measurement technology, the experimental apparatus in other every profession and trade fields on the Innovation and application of modern measurement technology far ahead of fluid mechanics class experiment teaching instrument.And hydromechanical teaching and experiment equipment is wanted realize comprehensive digitizing measurement and control, realize even in the future testing towards the network remote of MOOC, also need the automatically controlled automatic vent problem first solving many piezometric tube.
Summary of the invention
The object of the invention is the technological difficulties from exhaust piezometric tube of solution one pump multitube, especially provide a kind of from exhaust many piezometric tube measuring cell, not only exhaust and convenient, and be convenient to apply in automatic control system.
A kind of from exhaust many piezometric tube measuring cell, comprising:
Plural piezometric tube;
The shunt be connected with plural piezometric tube;
Connect the damping element of described piezometric tube and shunt;
The air pump be connected with described shunt.
The present invention has the shunt of triple channel or more passage, is arranged at damping element, plural piezometric tube and air pump (i.e. micro air pump) on the connecting pipe between shunt outlet and the open top of corresponding piezometric tube.It can utilize a small air pump, synchronously be vented reaching 10 piezometric tube simultaneously, even if under the pressure measurement end of each piezometric tube all leads to atmospheric condition, also can carry out drainage exhaust to the piezometric tube remaining press liquid in a single pipe wherein, this is the current limliting pressurization because of damping element.
The pressure of micro air pump generally reaches as high as 3 to 4 meter water columns, example is counted with row's formula pressure measurement of 10 piezometric tube, the piezometric head of its piezometric tube is generally within 1 meter, if wherein 9 piezometric tube lead directly to air, all the other piezometric tube give the pressure water head of 1 meter water column, so will get rid of the pressure water in this root piezometric tube, then its air pressure provided must more than 1 meter, and the atmospheric pressure that is air pump is defeated by main snorkel should be greater than 1 meter water column.Experimentally, determine damping hole (i.e. air hole) size of damping element, make the pressure on main channel reach this requirement, so this experimental provision also just achieves the degassing function of a pump multitube.
Laboratory examination shows, when the damping hole size to fit of damping element, even if all lead directly to air at 10 piezometric tube lower curtates, every root piezometric tube is when having gas to flow out, on main channel, gaseous tension still can reach more than 1.5 meters.Therefore almost suitable with the degassing function that the degassing function and a pump one pipe measuring cell of being with a pump multilimb manometer of damping are synchronous.Just difference to some extent in the speed of exhaust.
According to the performance requirement of piezometric tube, in normal measurement situation, piezometric tube open top must lead to air, in gas circuit, be also provided with breather valve (concrete as adopted automatically controlled two breather valves) for this reason, it is closed when air pump works, automatically open when air pump stops, thus the gas on each piezometric tube top is communicated with air by damping hole, keeps the characteristic of piezometric tube constant.
Utilize damping element, each piezometric tube done there is pressure current limliting air feed, make to realize a pump multitube from the synchronous degassing function of exhaust.Adopt electric exhaust mode, fill up the automatically controlled blank from exhaust multilimb manometer in automatic control system.
As preferably, described also comprises from exhaust many piezometric tube measuring cell: the breather valve be connected with described shunt.Described breather valve is electric control valve.
As preferably, described breather valve and described shunt are tightly connected.
As preferably, described piezometric tube is straight pipe type piezometric tube, and the top of described piezometric tube is opening, and this open top is connected with described shunt.The open top of described piezometric tube is tightly connected by described damping element and described shunt.
As preferably, described shunt is the gas circuit linker of more than triple channel.
As preferably, described damping element is seal, the seal is provided with the air hole of ventilating for described shunt and described piezometric tube, this air hole is damping hole, be one the damping element of complete trapping can open a micropore in connecting pipe, its pore size can reach the exhaust outlet effect of choked flow supercharging.
As preferably, exhaust nozzle and the described shunt of described air pump are tightly connected.
Compared with prior art, tool of the present invention has the following advantages:
1, the principle of damping hole current limliting supercharging in innovative usage fluid mechanics, adopts a pump Multi-tube synchronous exhaust apparatus, saves the troublesome operation every root piezometric tube being exhausted respectively to draining with ear washing bulb, and air pump consumption is few, structure is simple, easy to operate, good exhaust effect.
2, adopt electric exhaust mode, fill up the automatically controlled blank from exhaust multilimb manometer in automatic control system.
3, the present invention is as hydrodynamic calculations instruments used for education, and the fluid mechanics principle that make use of of novelty solves an experiment difficult problem, the creativity consciousness of the student that can motivate students' interest in learning, inspire, useful to cultivation innovation ability, possesses good teaching efficiency.
Accompanying drawing explanation
Fig. 1 is that the present invention is from the manometric structural representation of the many piezometric tube of exhaust.
Embodiment
As shown in Figure 1, for the present invention is from exhaust many piezometric tube measuring cell, comprising: plural piezometric tube (for be provided with 6 piezometric tube side by side in figure, i.e. piezometric tube 1, piezometric tube 2, piezometric tube 3, piezometric tube 4, piezometric tube 5 and piezometric tube 6); Rack of measuring pressure 9, piezometric tube 1 ~ 6 is arranged on rack of measuring pressure 9; The shunt 7 be connected with 6 piezometric tube; Connect the damping element 8 of 6 piezometric tube and shunt 7; The air pump 11 be connected with shunt 7.
Also comprise from exhaust many piezometric tube measuring cell: the breather valve 12 be connected with shunt 7.Breather valve 12 is electric control valve, specifically can adopt automatically controlled two breather valves.Breather valve 12 and shunt 7 are tightly connected.
Piezometric tube 1 ~ 6 is straight pipe type piezometric tube, and the top of piezometric tube 1 ~ 6 is opening, and this open top is connected with shunt 7.The open top of piezometric tube 1 ~ 6 is tightly connected by damping element 8 and shunt 7.The bottom of piezometric tube 1 ~ 6 is with water inlet tap, and this water inlet tap communicates through the pressure tap water route of tube of pressure-stabilizing with Experimental Water Tank or experimental channel usually, can carry out pressure measurement to each pressure tap.
Shunt 7 is the gas circuit linker of more than triple channel, and when piezometric tube is two, shunt 7 can adopt threeway, and a road seals with the exhaust nozzle of air pump 11 and is communicated with, and also has two-way to be sealed with the open top of two piezometric tube by damping element 8 and is communicated with.In figure, shunt 7 adopts the gas circuit linker of seven passages, and namely seven lead to, and conduit 10 of leading up to seals with the exhaust nozzle of air pump 11 and is communicated with, and also has LIULUTONG overdamping element 8 to seal with the open top of piezometric tube 1 ~ 6 and is communicated with.Exhaust nozzle and the shunt 7 of air pump 11 are tightly connected.
Damping element 8 is seal, the seal is provided with the air hole of ventilating for shunt 7 and piezometric tube 1 ~ 6, this air hole is damping hole, is one the damping element 8 of complete trapping to open a micropore in connecting pipe, and its pore size can reach the exhaust outlet effect of choked flow supercharging.
Each damping element 8 being positioned in the connecting pipe between the outlet of shunt 7 and the open top of piezometric tube 1 ~ 6 respectively, making air-flow can only flow into each piezometric tube 1 ~ 6 from damping hole because working as.
Energising, makes air pump 11 open, and breather valve 12 (automatically controlled two breather valves) closes, and carries out piezometric tube 1 ~ 6 and is vented.Power-off after exhaust, air pump 11 stops, and breather valve 12 (automatically controlled two breather valves) is opened, and after backwater is stable, observes in communicating pipe and piezometric tube 1 ~ 6 whether bubble residence, having, repeating above exhaust again, without then measuring.
The present invention has the shunt 7 of triple channel or more passage, is arranged at damping element 8, piezometric tube 1 ~ 6 and the air pump 11 (i.e. micro air pump) on connecting pipe that shunt 7 exports between the open top of corresponding piezometric tube 1 ~ 6.It can utilize a small air pump, 6 piezometric tube 1 ~ 6 are synchronously vented simultaneously, even if under the pressure measurement end of piezometric tube 1 ~ 6 all leads to atmospheric condition, also can carry out drainage exhaust to the piezometric tube remaining press liquid in a single pipe wherein, this is the current limliting pressurization because of damping element 8.
The pressure of air pump 11 (i.e. micro air pump) generally reaches as high as 3 to 4 meter water columns, example is counted with row's formula pressure measurement of 6 piezometric tube 1 ~ 6, the piezometric head of its piezometric tube 1 ~ 6 is generally within 1 meter, if wherein 5 piezometric tube lead directly to air, all the other piezometric tube give the pressure water head of 1 meter water column, so to get rid of the pressure water in this root piezometric tube, then its air pressure provided must more than 1 meter, and the atmospheric pressure that is air pump is defeated by main snorkel should be greater than 1 meter water column.Experimentally, determine damping hole (i.e. air hole) size of damping element 8, make the pressure on main channel reach this requirement, so this experimental provision also just achieves the degassing function of a pump multitube.
According to the performance requirement of piezometric tube 1 ~ 6, in normal measurement situation, open top must lead to air, in gas circuit, be provided with breather valve 12 (concrete as adopted electric two-way) for this reason, it is closed when air pump 11 works, automatically open when air pump 11 stops, thus the gas of piezometric tube 1 ~ 6 is communicated with air by damping hole, keeps the characteristic of piezometric tube 1 ~ 6 constant.
Utilize damping element 8, each piezometric tube 1 ~ 6 done there is pressure current limliting air feed, make to realize a pump multitube from the synchronous degassing function of exhaust.Adopt electric exhaust mode, fill up the automatically controlled blank from exhaust multilimb manometer in automatic control system.
Claims (9)
1., from exhaust many piezometric tube measuring cell, it is characterized in that, comprising:
Plural piezometric tube;
The shunt be connected with plural piezometric tube;
Connect the damping element of described piezometric tube and shunt;
The air pump be connected with described shunt.
2. according to claim 1 from exhaust many piezometric tube measuring cell, it is characterized in that, also comprise: the breather valve be connected with described shunt.
3. according to claim 2ly it is characterized in that from exhaust many piezometric tube measuring cell, described breather valve is electric control valve.
4. according to claim 2ly it is characterized in that from exhaust many piezometric tube measuring cell, described breather valve and described shunt are tightly connected.
5. according to claim 1ly it is characterized in that from exhaust many piezometric tube measuring cell, described piezometric tube is straight pipe type piezometric tube, and the top of described piezometric tube is opening, and this open top is connected with described shunt.
6. according to claim 5ly it is characterized in that from exhaust many piezometric tube measuring cell, the open top of described piezometric tube is tightly connected by described damping element and described shunt.
7. according to claim 1ly it is characterized in that from exhaust many piezometric tube measuring cell, described shunt is the gas circuit linker of more than triple channel.
8. according to claim 1ly it is characterized in that from exhaust many piezometric tube measuring cell, described damping element is seal, and the seal is provided with the air hole of ventilating for described shunt and described piezometric tube.
9. according to claim 1ly it is characterized in that from exhaust many piezometric tube measuring cell, exhaust nozzle and the described shunt of described air pump are tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510152598.0A CN104764556B (en) | 2015-04-01 | 2015-04-01 | It is a kind of from many pressure-measuring pipe manometers of exhaust |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510152598.0A CN104764556B (en) | 2015-04-01 | 2015-04-01 | It is a kind of from many pressure-measuring pipe manometers of exhaust |
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| Publication Number | Publication Date |
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| CN104764556A true CN104764556A (en) | 2015-07-08 |
| CN104764556B CN104764556B (en) | 2017-06-09 |
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| CN201510152598.0A Active CN104764556B (en) | 2015-04-01 | 2015-04-01 | It is a kind of from many pressure-measuring pipe manometers of exhaust |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084929A (en) * | 2018-10-23 | 2018-12-25 | 水利部南京水利水文自动化研究所 | Without pressure pressure-measuring pipe intelligent monitoring device when one kind is pressed with sometimes |
| CN114279617A (en) * | 2021-12-22 | 2022-04-05 | 南昌工程学院 | Device and method for accurately measuring hydrodynamic pressure in hydraulic model test |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751288Y (en) * | 2004-10-14 | 2006-01-11 | 浙江大学 | Bottom regulation type pressure testing rack |
| CN101782417A (en) * | 2010-02-01 | 2010-07-21 | 河海大学 | Method and device for automatically measuring water-level variation |
| CN201707198U (en) * | 2010-05-28 | 2011-01-12 | 中国地质大学（武汉） | Automatic piezometer tube data acquisition instrument used in two-dimensional hydrodynamic dispersion experiment |
| CN103575499A (en) * | 2013-10-09 | 2014-02-12 | 山东科技大学 | Three-dimensional seepage flow field monitoring device |
| CN103578341A (en) * | 2013-10-10 | 2014-02-12 | 山东科技大学 | Simulation experiment method used for monitoring three-dimensional seepage flow field |
| CN204514524U (en) * | 2015-04-01 | 2015-07-29 | 浙江大学 | A kind of from exhaust many piezometric tube measuring cell |
-
2015
- 2015-04-01 CN CN201510152598.0A patent/CN104764556B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751288Y (en) * | 2004-10-14 | 2006-01-11 | 浙江大学 | Bottom regulation type pressure testing rack |
| CN101782417A (en) * | 2010-02-01 | 2010-07-21 | 河海大学 | Method and device for automatically measuring water-level variation |
| CN201707198U (en) * | 2010-05-28 | 2011-01-12 | 中国地质大学（武汉） | Automatic piezometer tube data acquisition instrument used in two-dimensional hydrodynamic dispersion experiment |
| CN103575499A (en) * | 2013-10-09 | 2014-02-12 | 山东科技大学 | Three-dimensional seepage flow field monitoring device |
| CN103578341A (en) * | 2013-10-10 | 2014-02-12 | 山东科技大学 | Simulation experiment method used for monitoring three-dimensional seepage flow field |
| CN204514524U (en) * | 2015-04-01 | 2015-07-29 | 浙江大学 | A kind of from exhaust many piezometric tube measuring cell |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084929A (en) * | 2018-10-23 | 2018-12-25 | 水利部南京水利水文自动化研究所 | Without pressure pressure-measuring pipe intelligent monitoring device when one kind is pressed with sometimes |
| CN114279617A (en) * | 2021-12-22 | 2022-04-05 | 南昌工程学院 | Device and method for accurately measuring hydrodynamic pressure in hydraulic model test |
| CN114279617B (en) * | 2021-12-22 | 2023-11-21 | 南昌工程学院 | Device and method for accurately measuring dynamic water pressure in hydraulic model test |
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| CN104764556B (en) | 2017-06-09 |
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