CN203455137U - Pressure generator - Google Patents
Pressure generator Download PDFInfo
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- CN203455137U CN203455137U CN201320548149.4U CN201320548149U CN203455137U CN 203455137 U CN203455137 U CN 203455137U CN 201320548149 U CN201320548149 U CN 201320548149U CN 203455137 U CN203455137 U CN 203455137U
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- pressure
- gas
- tank
- pressure generator
- gas tank
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Abstract
The utility model discloses a pressure generator, comprising two metal rigid gas tanks and a flow control valve. One of the gas tanks is used as a pressure source, and the other gas tank is used as output of pressure. Pipelines with the flow control valve are connected between the two metal rigid gas tanks. The pressure generator can solves technical problems of pressure control precision, simplified structure, relatively low manufacturing cost of a pressure source, etc.
Description
Technical field
The utility model relates to a kind of test pressure source apparatus of pressure transducer.
Background technology
When the dynamic response characteristic of test pressure sensor, need to produce the linear pressure source increasing of pressure in time, the pressure controling precision of this pressure source, the structure of simplification and lower manufacturing cost are its widely used preconditions.
Summary of the invention
The purpose of this utility model is to provide a kind of pressure generator, to solve the pressure controling precision of pressure source, the structure of simplification and the lower technical matterss such as manufacturing cost.
In order to realize foregoing invention object, the technical scheme that the utility model adopts is as follows:
A pressure generator, it comprises two metal rigidity gas tanks and flowrate control valve; One of them gas tank is as pressure source, and another gas tank, as the output of pressure, between two metal rigidity gas tanks, adopts the pipeline that flowrate control valve is installed to connect.
On the pipeline connecting between two described metal rigidity gas tanks, switch valve is installed.
Flowrate control valve on the pipeline connecting between two described metal rigidity gas tanks is adjustable high-precision mechanical flow operation valve.
Its volume of metal gas tank as pressure source is greater than as Output pressure metal gas tank volume.
The volume of two rigid metal gas tanks on pressure source metal gas tank remains unchanged.
On pressure source gas tank, there is pressed gas input port.
On described two gas tanks, all there is tensimeter.
On Output pressure gas tank, include the pressure output that can export gaseous tension in gas tank.
The utlity model has pressure and control the advantages such as convenient and accurately, simple in structure and low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Structure of the present utility model, referring to Fig. 1, adopts flow control valve and two head tanks, has produced the linear pressure increasing in time in tank 8, can be used as the standard source of pressure transducer linear dynamic response.
Pressure-generating device has adopted two metal rigidity gas tanks 3,8, and middle connecting pipe 4,5,6, the flowrate control valve 11 of adopting is connected with switch valve 10, and a gas tank 3, as pressure source, has an air intake opening 1; Another gas tank 8, as the output of pressure, has a pressure output 9.Tensimeter 2,7 is installed on two metal rigidity gas tanks 3,8.
During use, first closing switch valve 10, and by air intake opening, to tank 3 charged pressure gases, the pressure while observing inflation by tensimeter 2 in tank 3, when pressure arrives certain value, stops inflation, closes inflation inlet.
After a while after tank 3 internal pressure stabilises, open switch valve 10, the interior gas of tank 3 enters tank 8 by connecting line 4, flowrate control valve 11, connecting line 5, switch valve 10, connecting line 6, under the effect of flowrate control valve 11 with constant flow velocity to the interior inflation of tank 8, according to the Ideal-Gas Equation:
PV=nRT(is wherein: P is tank 8 internal pressures, and V is the volume of tank 8, and n is the interior number of moles of gas of tank 8, and R is the Ideal-Gas Equation, and T is the interior gas temperature of tank 8)
During use, tank fully contacts with extraneous, and in tank, gas temperature is identical with environment temperature, in measuring process, can think substantially constant, V is the volume of rigidity tank, also can think and not change, consider above-mentioned condition, obtain after the Ideal-Gas Equation being got to the differential of time:
V(dp/dt)=RT(dn/dt)
Tank internal pressure over time rate is:
dp/dt=(RT/V)*(dn/dt)
Visible, pressure over time rate is proportional to the gas flow rate (dn/dt) flowing in tank.
Adopt flowrate control valve, the gas flow that makes to flow in tank is a constant, (dn/dt) its be constant, notice that V is the volume of rigidity gas tank, it is a definite value, simultaneously, because gas tank fully contacts with environment, temperature variation is very little at short notice, temperature T also can be considered and not change, therefore, pressure over time rate dp/dt is also constant, said apparatus has been realized tank 8 internal pressures linearity in time to be increased, pressure output at tank 8 can obtain the linear pressure increasing in time, obtain a pressure source for linear change in time.
Can by adjust flux operation valve 11, control the size (being the size of dn/dt) of flow, can obtain the pressure change rate of different numerical value.
Claims (8)
1. a pressure generator, is characterized in that, it comprises two metal rigidity gas tanks and flowrate control valve; One of them gas tank is as pressure source, and another gas tank, as the output of pressure, between two metal rigidity gas tanks, adopts the pipeline that flowrate control valve is installed to connect.
2. a kind of pressure generator according to claim 1, is characterized in that, on the pipeline connecting, switch valve is installed between two described metal rigidity gas tanks.
3. a kind of pressure generator according to claim 1, is characterized in that, the flowrate control valve on the pipeline connecting between two described metal rigidity gas tanks is adjustable high-precision mechanical flow operation valve.
4. a kind of pressure generator according to claim 1, is characterized in that, as its volume of metal gas tank of pressure source, is greater than as Output pressure metal gas tank volume.
5. a kind of pressure generator according to claim 1, is characterized in that, the volume of two rigid metal gas tanks on pressure source metal gas tank remains unchanged.
6. a kind of pressure generator according to claim 1, is characterized in that, has pressed gas input port on pressure source gas tank.
7. a kind of pressure generator according to claim 1, is characterized in that, on described two gas tanks, all has tensimeter.
8. a kind of pressure generator according to claim 1, is characterized in that, includes the pressure output that can export gaseous tension in gas tank on Output pressure gas tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548149.4U CN203455137U (en) | 2013-09-04 | 2013-09-04 | Pressure generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548149.4U CN203455137U (en) | 2013-09-04 | 2013-09-04 | Pressure generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203455137U true CN203455137U (en) | 2014-02-26 |
Family
ID=50135003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320548149.4U Expired - Lifetime CN203455137U (en) | 2013-09-04 | 2013-09-04 | Pressure generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203455137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849538A (en) * | 2019-11-27 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Multi-channel parallel output automatic standard pressure generator based on different pressure ranges |
-
2013
- 2013-09-04 CN CN201320548149.4U patent/CN203455137U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849538A (en) * | 2019-11-27 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Multi-channel parallel output automatic standard pressure generator based on different pressure ranges |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151215 Address after: 100176, Beijing economic and Technological Development Zone, Beijing, No. 32, No. 1, No. 1, No. 1, Hai Lu Patentee after: BEIJING YOUHANG ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Address before: 100023, Daxing District Beijing economic and Technological Development Zone, No. 1-3, No. 32, Hai Lu, Beijing Patentee before: Beijing Minghang Technology Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
|
| CX01 | Expiry of patent term |