CN205192681U - A water pressure and an atmospheric pressure conversion pressure regulating section of thick bamboo - Google Patents
A water pressure and an atmospheric pressure conversion pressure regulating section of thick bamboo Download PDFInfo
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- CN205192681U CN205192681U CN201520924449.7U CN201520924449U CN205192681U CN 205192681 U CN205192681 U CN 205192681U CN 201520924449 U CN201520924449 U CN 201520924449U CN 205192681 U CN205192681 U CN 205192681U
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Abstract
The utility model discloses a water pressure and an atmospheric pressure conversion pressure regulating section of thick bamboo, it has an inclosed pressure section of thick bamboo, is equipped with inlet, hydraulic pressure in seal -off pressure section of thick bamboo lateral wall bottom position surveys mouthful, is equipped with atmospheric pressure in seal -off pressure bucket lateral wall upper portion position and surveys mouthful, and top position is equipped with the fluid level control pipe in a seal -off pressure section of thick bamboo, and top position is equipped with exhaust flowing back valve the seal -off pressure bucket outside, and the fluid level control pipe communicates with exhaust flowing back valve, inlet, hydraulic pressure are surveyed a mouthful position and are less than fluid level control pipe end opening, atmospheric pressure is surveyed a mouthful position and is higher than fluid level control pipe end opening, the pressure regulating section of thick bamboo of a plurality of the same functional structures is arranged and is arranged, can constitute pressure regulating section of thick bamboo row. The utility model discloses a change traditional pressure regulating section of thick bamboo drawback in the past, the topping up can easily exhaust to keep an interior liquid level invariable, also can arrange one or more pressure -measuring opening on a section of thick bamboo according to the actual demand, simplify examining the unit in the experimental system, it is easy and simple to handle directly perceived, be suitable for modern teaching requirement, also saved the experimental arrangement place simultaneously.
Description
Technical field
The utility model belongs to experiment measuring instrument field, is specifically related to a kind of hydraulic pressure and air pressure conversion voltage regulation cylinder.
Background technology
Hydraulics and fluid mechanics are main professional basic courses of the many specialties of engineering and polytechnic universities.Modern hydraulics is based upon experiment, theory, calculates on three large pillars, and experiment is content indispensable in teaching link.Wherein pressure regulation cylinder is one of ingredient important in hydraulic experiment instrument, it is the pressure regulation cylinder being carried out the sealing made by organic glass, the connection being realized experimental facilities and electric pilot by pressure regulation cylinder is needed in hydraulic experiment, stablized the pressure in rack of measuring pressure by the air pressure adjustment of exchanging pressure cylinder, thus realize the pressure survey of point of fixity in fluid.Pressure regulation cylinder is one of important teaching equipment of hydraulics and fluid mechanics.
Traditional pressure regulation cylinder also exists certain drawback: liquid feeding difficulty in cylinder, or liquid level elevation cannot accurately control, cause the measuring cell be connected with pressure regulation cylinder, especially electric manometer data are unstable, each measurement, first must carry out pressure zeroing to compensate, but it is each because liquid level is different, required pressure zeroing offset is also not quite similar, workload is caused to be that the order of magnitude increases, and because unstable, measured by pressure gauge, data are also unreliable, especially the field of precision measurement is needed at some, a level stability of urgtented need equipment, pressure zeroing compensates fixing pressure regulation cylinder, ensure that data stabilization is reliable.
Summary of the invention
The purpose of this utility model solves problems of the prior art, and provides a kind of hydraulic pressure and air pressure conversion voltage regulation cylinder, and concrete technical scheme is as follows:
A kind of hydraulic pressure and air pressure conversion voltage regulation cylinder, comprise base, seal-off pressure cylinder, inlet, hydraulic pressure detection mouth, Liquid level pipe, air pressure detection mouth and exhaust tapping valve; Seal-off pressure cylinder is arranged on base, inlet and hydraulic pressure detection mouth are arranged at seal-off pressure cylinder lower sidewall position, air pressure detection mouth is arranged at seal-off pressure cylinder side wall upper part position, the Liquid level pipe of hollow is provided with at seal-off pressure cylinder top, seal-off pressure tube inner chamber is stretched in Liquid level pipe one end, the other end stretches out seal-off pressure drum outer wall, and Liquid level pipe is provided with and controls the pipeline connection of Liquid level pipe or the exhaust tapping valve of blocking-up.
As preferably, the setting position of described inlet and hydraulic pressure detection mouth is lower than bottom Liquid level pipe.
As preferably, described air pressure detection mouth position is higher than bottom Liquid level pipe.
A kind of hydraulic pressure and air pressure conversion voltage regulation cylinder, it has multiple above-mentioned hydraulic pressure and air pressure conversion voltage regulation cylinder, each hydraulic pressure and air pressure conversion voltage regulation cylinder arranged composition pressure regulation cylinder row.
Advantage of the present utility model:
1) change the way in the past using traditional pressure regulation cylinder, ingeniously utilize self-pressure liquid, by the exhaust tapping valve above airtight cylinder, light topping up.Intuitively easy and simple to handle, numerical value precise constant, is suitable for the requirement of modern teaching and scientific research;
2) used Liquid level pipe to carry out controlling water level, guaranteed that level stability controls, in the middle of measurement, pressure zeroing offset is fixed, and eliminates the tedious steps of electric pilot zeroing;
3) pressure regulation cylinder can experimentally equipment the corresponding increase of difference or reduce detection mouth, namely the hydraulic pressure of downside detection mouth can be utilized to carry out hydraulic measurement, also the air pressure of upside detection mouth can be utilized to carry out gas pressure measurement, so all can measure the different medium such as liquid, gas.
Accompanying drawing illustrates:
Fig. 1 is hydraulic pressure and air pressure conversion voltage regulation barrel structure schematic diagram;
Fig. 2 is hydraulic pressure and air pressure conversion voltage regulation cylinder row structural representation.
In figure: base 1, seal-off pressure cylinder 2, inlet 3, hydraulic pressure detection mouth 4, Liquid level pipe 5, air pressure detection mouth 6 and exhaust tapping valve 7.
Embodiment
Below in conjunction with accompanying drawing the present invention be further elaborated and illustrate.In the present invention, the technical characteristic of each embodiment is not having under conflicting prerequisite, all can carry out respective combination.
As shown in Figure 1, a kind of hydraulic pressure and air pressure conversion voltage regulation cylinder, comprise base 1, seal-off pressure cylinder 2, inlet 3, hydraulic pressure detection mouth 4, Liquid level pipe 5, air pressure detection mouth 6 and exhaust tapping valve 7; Seal-off pressure cylinder 2 is arranged on base 1, inlet 3 and hydraulic pressure detection mouth 4 are arranged at seal-off pressure cylinder 2 lower sidewall position, air pressure detection mouth 6 is arranged at seal-off pressure cylinder 2 side wall upper part position, the Liquid level pipe 5 of hollow is provided with at seal-off pressure cylinder 2 top, seal-off pressure cylinder 2 inner chamber is stretched in Liquid level pipe 5 one end, the other end stretches out seal-off pressure cylinder 2 outer wall, and Liquid level pipe 5 is provided with the exhaust tapping valve 7 of pilot piping break-make.The setting position of described inlet 3 and hydraulic pressure detection mouth 4 is lower than bottom Liquid level pipe 5.Described air pressure detection mouth 6 position is higher than bottom Liquid level pipe 5.
The course of work of the present utility model is: be connected with tested point by inlet 3 with connection flexible pipe, hydraulic pressure detection mouth 4 or air pressure detection mouth 6 are connected with measuring cell, liquid enters seal-off pressure cylinder 2 by inlet 3, turn on exhaust tapping valve 7, in pressure measuring cylinder, liquid level rises to bottom Liquid level pipe 5 under hydraulic pressure effect, and chamber cavity gas is discharged from Liquid level pipe 5.When liquid is discharged from Liquid level pipe 5 top, close exhaust tapping valve 7, making level stability in pressure measuring cylinder, there is certain pressure in the gas on chamber top.Namely detecting by detecting mouth 4 or air pressure with hydraulic pressure the measuring cell that mouth 6 is connected, recording or converting and obtain the force value of tested point, thus hydraulic pressure is converted to air pressure.
Based on above-mentioned hydraulic pressure and air pressure conversion voltage regulation cylinder, propose a kind of hydraulic pressure and air pressure conversion voltage regulation cylinder in addition, it has hydraulic pressure and the air pressure conversion voltage regulation cylinder of multiple foregoing description, each hydraulic pressure and air pressure conversion voltage regulation cylinder cylinder arranged composition pressure regulation cylinder row.Multiple pressure regulation cylinders on pressure regulation cylinder row use simultaneously, can record the pressure value signal of each testing pressure point respectively.
Embodiment
Be installed to traditional venturi flow with hydraulic pressure of the present utility model and air pressure conversion voltage regulation cylinder and count example, as shown in Figure 2.By venturi shrink before and trunnion place two point pressure with receiving two the utility model hydraulic pressure and air pressure conversion voltage regulation cylinder bottom liquid inlet mouth communicating pipe respectively, respectively two hydraulic pressure detection mouths are connected with measuring cell with communicating pipe again, air pressure detection mouth is connected with the pressure acquisition mouth of atmospheric pressure sensor, emptying is communicated with inner air tube, water-filling overcurrent in Venturi tube, and make flow velocity in pipeline be zero, open pressure regulation cylinder top vent tapping valve, in cylinder, water level rises, when water level rises to Liquid level pipe end opening, liquid can continue to rise and from exhaust tapping valve water outlet, now close exhaust tapping valve, keep stable level in pressure regulation cylinder.Now record Venturi meter two point pressure absolute value or relative value respectively by measuring cell; Also Venturi meter two point pressure absolute value or relative value is recorded respectively by atmospheric pressure sensor, according to can be calculated multiple physical indexs such as flow, flow velocity, pressure.
Above-described embodiment is one of the present invention preferably scheme, and so it is not intended to limiting the invention, and all technical schemes taking the mode of equivalent replacement or equivalent transformation to obtain, all drop in protection scope of the present invention.
Claims (4)
1. hydraulic pressure and an air pressure conversion voltage regulation cylinder, is characterized in that, comprises base (1), seal-off pressure cylinder (2), inlet (3), hydraulic pressure detection mouth (4), Liquid level pipe (5), air pressure detection mouth (6) and exhaust tapping valve (7); Seal-off pressure cylinder (2) is arranged on base (1), inlet (3) and hydraulic pressure detection mouth (4) are arranged at seal-off pressure cylinder (2) lower sidewall position, air pressure detection mouth (6) is arranged at seal-off pressure cylinder (2) side wall upper part position, the Liquid level pipe (5) of hollow is provided with at seal-off pressure cylinder (2) top, seal-off pressure cylinder (2) inner chamber is stretched in Liquid level pipe (5) one end, the other end stretches out seal-off pressure cylinder (2) outer wall, and Liquid level pipe (5) is provided with the exhaust tapping valve (7) of pilot piping break-make.
2. hydraulic pressure as claimed in claim 1 and air pressure conversion voltage regulation cylinder, is characterized in that, the setting position of described inlet (3) and hydraulic pressure detection mouth (4) is lower than Liquid level pipe (5) bottom.
3. hydraulic pressure as claimed in claim 1 and air pressure conversion voltage regulation cylinder, is characterized in that, described air pressure detection mouth (6) position is higher than Liquid level pipe (5) bottom.
4. hydraulic pressure and an air pressure conversion voltage regulation cylinder, is characterized in that it has arbitrary described hydraulic pressure and air pressure conversion voltage regulation cylinder in multiple claim 1 ~ 3, each hydraulic pressure and air pressure conversion voltage regulation cylinder arranged composition pressure regulation cylinder row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520924449.7U CN205192681U (en) | 2015-11-18 | 2015-11-18 | A water pressure and an atmospheric pressure conversion pressure regulating section of thick bamboo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520924449.7U CN205192681U (en) | 2015-11-18 | 2015-11-18 | A water pressure and an atmospheric pressure conversion pressure regulating section of thick bamboo |
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| CN205192681U true CN205192681U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520924449.7U Active CN205192681U (en) | 2015-11-18 | 2015-11-18 | A water pressure and an atmospheric pressure conversion pressure regulating section of thick bamboo |
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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 |
| CN109656273A (en) * | 2019-01-02 | 2019-04-19 | 嘉兴学院 | A kind of liquid gas shift type pressure transfer device of energy automatic liquid level control |
-
2015
- 2015-11-18 CN CN201520924449.7U patent/CN205192681U/en active Active
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 |
| CN109656273A (en) * | 2019-01-02 | 2019-04-19 | 嘉兴学院 | A kind of liquid gas shift type pressure transfer device of energy automatic liquid level control |
| CN109656273B (en) * | 2019-01-02 | 2022-03-08 | 嘉兴南湖学院 | Liquid-gas conversion type pressure transmission device capable of automatically controlling liquid level |
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