CN205937266U - Fluid pressure control structure - Google Patents
Fluid pressure control structure Download PDFInfo
- Publication number
- CN205937266U CN205937266U CN201620916624.2U CN201620916624U CN205937266U CN 205937266 U CN205937266 U CN 205937266U CN 201620916624 U CN201620916624 U CN 201620916624U CN 205937266 U CN205937266 U CN 205937266U
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- Prior art keywords
- cavity
- pressure
- fluid pressure
- pressure control
- control structure
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Abstract
The utility model provides a fluid pressure control structure, includes a cavity, is provided with an isolation barrier in the cavity and divide into two seal chamber with the cavity, is provided with liquid in one of them seal chamber, is provided with gas in another seal chamber, isolation barrier can free motion under the effect of pressure differential, it is provided with PRESSURE DETECTOR in the seal chamber of liquid to be provided with, be provided with admission line and exhaust duct on being provided with gaseous seal chamber, all be provided with the solenoid valve on admission line and the exhaust duct, pressure sensor's signal output part is connected to the controller, and the control signal of controller is connected to on the solenoid valve respectively. Can realize very accurate pressure control through pressure detection and by poor realization of gaseous generate pressure to the pressure control of liquid, adopt different separators can realize controlling different pressure range to realize accurate control.
Description
Technical field
This utility model is related to Stress control field, relates particularly to a kind of fluid pressure control structure.
Background technology
At present, fluid pressure is typically adopted and is pumped up and then realized by adjusting air relief valve, each time using band pressure
Liquid is both needed to immediately produce pressure by pump.Under normal circumstances, the size of fluid pressure and the relevant formula of the depth of liquid are：
P=ρ gh, thus when our target needs a certain pressure value, can pass through to change the height of liquid in theory, thus real
The now control to pressure.
But it is in a practical situation, at all irrealizable in the way of theoretical, current conditions are to be not allow for enough
High container filling liquid, and for concrete pressure value the anti-height released, also can not effectively be controlled so that
Pressure controling precision is not high enough.Therefore, reality in way be by pump, liquid to be pressurizeed, then again by air relief valve Lai
Adjust pressure, thus realizing the control to fluid pressure.
But new problem in same, and the structure that pump produces pressure whole device first is extremely complex again, and because
For pump theory of mechanics make for high-precision Stress control embody inconspicuous, using pump produce pressure be applied to large scale computer
Tool equipment, and for the field of the invention, applicable target not only needs in the case of fluid pressure, but also must need to pressure
Power carries out precise control.Therefore, current fluid pressure control device can not meet the requirement of test.
Content of the invention
The purpose of the present invention is based on above-mentioned situation, propose a kind of by the way of gas pushed liquid, using gas
The mode that pressure is accurately controlled, realizes applying pressure on liquid by gas pressure, thus realizing the essence to fluid pressure
Close control.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of fluid pressure control structure, including a cavity, is provided with an isolation baffle plate and is divided into cavity in cavity
Two seal cavities, are provided with liquid in one of seal cavity, are provided with gas in another seal cavity；
It is provided with pressure detector, in the described seal cavity being provided with gas in the described seal cavity being provided with liquid
It is provided with admission line and discharge duct, admission line and discharge duct are provided with electromagnetic valve, described pressure transducer
Signal output part is connected to controller, and the control signal of controller is connected respectively on electromagnetic valve.
In technique scheme, described isolation baffle plate is piston, and between piston and cavity inner wall, on-fixed is connected.
In technique scheme, described piston moves horizontally along cavity inner wall under the effect of the pressure.
In technique scheme, described isolation baffle plate is waterproofing membrane, and waterproofing membrane is fixedly connected with cavity inner wall.
In technique scheme, described waterproofing membrane is elastomeric material, and center is in convex to waterproofing membrane under pressure
Play structure.
In technique scheme, described isolation baffle plate is constriction device, and constriction device is fixedly connected with cavity inner wall.
In technique scheme, described constriction device is the flexible material folding.
Compared with prior art, the invention has the beneficial effects as follows：By pressure detecting and produce pressure differential by gas to realize
Stress control to liquid, it is possible to achieve very accurately Stress control, can be realized to different pressures using different separators
Power scope is controlled, thus realizing being precisely controlled；This programme structure is simple, can effectively solve for must use liquid
As the Stress control in the target of pressure source, and overcome the inadequate problem of existing fluid pressure precision of fuzzy controller.
Brief description
Fig. 1 is present configuration schematic diagram；
Wherein：1 is air chamber, and 2 is liquid chambers, and 3 is pressure transmitter, and 4 is controller, and 5 is source of the gas, and 6 is electromagnetic valve, 7
It is isolation baffle plate.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, the primary structure of this programme and principle are the cavitys big using, and using one in cavity
Cavity is divided into two seal cavities, a seal cavity contained liquid, the built-in gas of another seal cavity by isolation baffle plate；Liquid
Body one end is applied directly to target, and gas end is control end.In order to realize precise control, pressure is set in liquid end
Detection means, and transfer signals to the controller outside cavity, the effect of controller is the air inlet pipe in order to control gas end
With the electromagnetic valve on escape pipe.When operationally, when the pressure of liquid end is inadequate, by the electromagnetism in controller control air inlet pipe
Valve is opened, and is inflated in cavity, and the pressure transmission that gas produces is in liquid, and passes through liquid transfer to target
On.When the pressure in target needs to reduce it is only necessary to the electromagnetic valve on gas escape pipe is controlled by controller
Reduce the pressure of gas, thus realize the pressure to liquid reducing.
In this programme, isolation baffle plate can adopt piston, is not fixedly connected, piston phase between piston and the inwall of cavity
Can move horizontally for cavity inner wall, therefore when the gas of air chamber body end increaseds or decreases, gas can promote piston to move
Dynamic, thus playing the pressure increasing liquid end, by the detection at any time of the pressure detector of liquid end, and by controlling electromagnetic valve
Switch, control the throughput of gas, thus realizing tight control to fluid pressure.Piston because moving range is big,
Relatively it is suitable for the big control of pressure range.
Little for pressure range, can be by isolation baffle plate using the resilient waterproofing membrane of tool, waterproofing membrane and chamber
The inwall of body is connected to one, and when the pressure of liquid or gas changes, waterproofing membrane can occur simple deformation,
Pressure is changed, because the characteristic of thin film, deformation is not too large, therefore for the pressure of small range in small range
Changing can be very accurate.
In order to increase the control for pressure range, propose to improve on the basis of waterproof cloth, can be by waterproof
Thin film is changed to the elastic shrinkage device with folding so that the deformation quantity of elastic shrinkage device is significantly greater than thin film, same
On the basis of control principle, can be controlled in a wider context.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1., it is characterised in that including a cavity, being provided with an isolation baffle plate in cavity will for a kind of fluid pressure control structure
Cavity is divided into two seal cavities, is provided with liquid in one of seal cavity, is provided with gas in another seal cavity；
It is provided with pressure detector in the described seal cavity being provided with liquid, the described seal cavity being provided with gas is arranged
Have on admission line and discharge duct, admission line and discharge duct and be provided with electromagnetic valve, the signal of described pressure transducer
Outfan is connected to controller, and the control signal of controller is connected respectively on electromagnetic valve.
2. a kind of fluid pressure control structure according to claim 1, it is characterised in that described isolation baffle plate is piston, is lived
Plug is connected with on-fixed between cavity inner wall.
3. a kind of fluid pressure control structure according to claim 2 it is characterised in that described piston pressure effect
Under move horizontally along cavity inner wall.
4. a kind of fluid pressure control structure according to claim 1 is it is characterised in that described isolation baffle plate is that waterproof is thin
Film, waterproofing membrane is fixedly connected with cavity inner wall.
5. a kind of fluid pressure control structure according to claim 4 is it is characterised in that described waterproofing membrane is elastic material
Material, center is in bulge-structure to waterproofing membrane under pressure.
6. a kind of fluid pressure control structure according to claim 1 is it is characterised in that described isolation baffle plate is to shrink dress
Put, constriction device is fixedly connected with cavity inner wall.
7. a kind of fluid pressure control structure according to claim 6 is it is characterised in that described constriction device is fold
Flexible material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916624.2U CN205937266U (en) | 2016-08-23 | 2016-08-23 | Fluid pressure control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916624.2U CN205937266U (en) | 2016-08-23 | 2016-08-23 | Fluid pressure control structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205937266U true CN205937266U (en) | 2017-02-08 |
Family
ID=57948713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620916624.2U Expired - Fee Related CN205937266U (en) | 2016-08-23 | 2016-08-23 | Fluid pressure control structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205937266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393392A (en) * | 2017-08-25 | 2017-11-24 | 深圳市应孕而生健康管理有限公司 | A kind of diagnosis by feeling the pulse simulator and simulated blood vessel system |
-
2016
- 2016-08-23 CN CN201620916624.2U patent/CN205937266U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107393392A (en) * | 2017-08-25 | 2017-11-24 | 深圳市应孕而生健康管理有限公司 | A kind of diagnosis by feeling the pulse simulator and simulated blood vessel system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170208 Termination date: 20210823 |