CN209728525U - A kind of device by controlling pressure regulating gas flow - Google Patents
A kind of device by controlling pressure regulating gas flow Download PDFInfo
- Publication number
- CN209728525U CN209728525U CN201920908752.6U CN201920908752U CN209728525U CN 209728525 U CN209728525 U CN 209728525U CN 201920908752 U CN201920908752 U CN 201920908752U CN 209728525 U CN209728525 U CN 209728525U
- Authority
- CN
- China
- Prior art keywords
- pressure
- gas
- air pump
- throttling set
- pressure sensor
- 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.)
- Active
Links
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The device that the utility model discloses a kind of by controlling pressure regulating gas flow, comprising: air pump, the air pump is connected with gas source, to pressurize；Pressure sensor, the pressure sensor connects air pump, to detect gas in pipelines real-time pressure；Feedback controller, the feedback controller is electrically connected with air pump, pressure sensor respectively, to feedback control；Throttling set, the throttling set front end are connected with pressure sensor, and the adjusting of gas flow is realized by control pressure；The further gas source rear end can connect filter, to filter gas；Further, the air pump rear end can connect gas appearance, to steady pressure；The air pump, gas appearance, throttling set etc. pass sequentially through pipeline connection.The present apparatus is suitable for gas analysis field, is set by pressure, obtains required output flow, automatically adjusts after pressure setting, pressure accurate stable after adjusting, apparatus structure is simple, and dead volume is small, and gas absorption is small.
Description
Technical field
The utility model belongs to gas analysis field, and in particular to a kind of dress by controlling pressure regulating gas flow
It sets.
Background technique
In micro- trace gas analysis field, throttling set control flow is generallyd use, by adjusting throttling set upstream
Pressure carrys out regulating flow, and the prior art is typically employed in the mode of throttling set upstream installation pressure regulator valve to control pressure, but adjusts
Pressure valve is adjusted, and pressure oscillation is big, and control accuracy is inadequate, and response speed is slow, and often structure is complicated for valve body, and dead volume is big, to gas
Body analysis has a certain impact.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of by control pressure regulating gas stream
The device of amount.It is set by pressure, obtains required output flow, automatically adjusted after pressure setting, pressure accurate stable after adjusting.
Apparatus structure is simple, and dead volume is small, and gas absorption is small
The purpose of this utility model is achieved through the following technical solutions: one kind passing through control pressure regulating gas stream
The device of amount, including,
Air pump, the air pump are used to pressurize to device；
Pressure sensor, the pressure sensor are pressed in real time to detect in the gas pipeline for entering throttling set front end
Power；
Feedback controller, the feedback controller are electrically connected with air pump, pressure sensor respectively；
The air pump is connect with throttling set by pipeline.
Preferably, air pump front end is connected with gas source.
Preferably, pneumatic filter is equipped between the gas source and air pump.
Preferably, gas appearance is connected between air pump and throttling set.
The beneficial effects of the utility model are:
1. the utility model is suitable for gas analysis, set by pressure, obtains required output flow, after pressure setting certainly
It is dynamic to adjust, pressure accurate stable after adjusting.
2. apparatus structure is simple, dead volume is small, and gas absorption is small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
1- gas source, 2- pneumatic filter, 3- air pump, 4- gas hold, 5- pressure sensor, 6- feedback controller, 7- throttling dress
It sets, 8- threeway.
Specific embodiment
The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing
It is not limited to as described below.
As shown in Figure 1, a kind of device by controlling pressure regulating gas flow, comprising:
Air pump 3, described 3 one end of air pump are connected with gas source 1；Gas source 1 can be provided directly, can also be passed through when providing
Pneumatic filter 2 is filtered processing.
The air pump 3 is connected with throttling set 7；
The air pump 3 can also connect gas and hold 4, and gas holds 4 and is connected with throttling set 7 in turn, and gas holds between 4 and throttling set 7
It is connected with the pressure sensor 5 to detect real-time pressure in the gas pipeline for entering 7 front end of throttling set；In the present embodiment
Throttling set 7, can be selected any different throttling set, preferably the throttling set that is only influenced by upstream pressure of flow.It is specific next
It says, as throttling set upstream pressure (P1) and outlet pressure (P2) pressure difference that is formed is when meeting or exceeding critical pressure ratio, gas stream
Speed reaches velocity of sound, and changes in flow rate is only influenced by upstream pressure at this time, unrelated with downstream pressure.
Feedback controller 6, the feedback controller 6 are electrically connected with air pump 3, pressure sensor 5 respectively；
The gas holds 4, pressure sensor 5 and throttling set 7 and is connected by threeway 8.
Specifically, described 3 one end of air pump is connected with gas source 1.Gas is inputted by air pump 3, reaches pressure controlled mesh
, pressure sensor 5 is used to detect real-time pressure in the gas pipeline for entering 7 front end of throttling set, is equipped in feedback controller 6
Program is controlled, control program constantly regulate air pump 3 and input gas velocity, to reach setting pressure by feedback control；Into one
Step, gas is connected after air pump 3 and holds 4, can play the role of steady pressure；Gas connects throttling set 7 after holding 4, selectes the section needed
Device 7 is flowed, by controlling pressure, selects different throttling sets 7 to cooperate and realizes adjusting pipeline gas flow.Present apparatus pressure is set
It being automatically adjusted after fixed, pressure accurate stable after adjusting is set by pressure, and required output flow can be obtained, and apparatus structure is simple,
Dead volume is small, and gas absorption is small.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (4)
1. a kind of device by controlling pressure regulating gas flow, it is characterised in that: including,
Air pump, the air pump are used to pressurize to device；
Pressure sensor, the pressure sensor is to detect real-time pressure in the gas pipeline for entering throttling set front end；
Feedback controller, the feedback controller are electrically connected with air pump, pressure sensor respectively；
The air pump is connect with throttling set by pipeline.
2. a kind of device by controlling pressure regulating gas flow according to claim 1, it is characterised in that: before air pump
End is connected with gas source.
3. a kind of device by controlling pressure regulating gas flow according to claim 2, it is characterised in that: described
Pneumatic filter is equipped between gas source and air pump.
4. it is according to claim 1 it is a kind of by control pressure regulating gas flow device, it is characterised in that: air pump with
Gas appearance is connected between throttling set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920908752.6U CN209728525U (en) | 2019-06-17 | 2019-06-17 | A kind of device by controlling pressure regulating gas flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920908752.6U CN209728525U (en) | 2019-06-17 | 2019-06-17 | A kind of device by controlling pressure regulating gas flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209728525U true CN209728525U (en) | 2019-12-03 |
Family
ID=68675421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920908752.6U Active CN209728525U (en) | 2019-06-17 | 2019-06-17 | A kind of device by controlling pressure regulating gas flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209728525U (en) |
-
2019
- 2019-06-17 CN CN201920908752.6U patent/CN209728525U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EG25250A (en) | System and method for treating fly ash. | |
| CN206146698U (en) | A constant speed sampling device for low concentration dust gauge | |
| CN105170366A (en) | Fluid closed loop flow control system | |
| CN204115829U (en) | A kind of combine detection system | |
| CN104541730A (en) | Venturi fertilizing device capable of adjusting concentration and adjusting method | |
| CN201086055Y (en) | Spray coating control system for mineral wool acoustic board surface | |
| CN209728525U (en) | A kind of device by controlling pressure regulating gas flow | |
| CN103699160B (en) | The quantitative level pressure feeding mechanism of a kind of high-precision gas | |
| CN204474325U (en) | A kind of closed loop system oxygenerator and flow/concentration adjustment closed loop control system thereof | |
| CN103900863B (en) | A kind of built-in constant current sampler | |
| CN108427443A (en) | High Precision Automatic aeration device and automatic oxygenation method | |
| CN202909645U (en) | Automatic nitrogen-hydrogen proportioning and mixing device | |
| CN104445036A (en) | Tobacco flavoring system and material liquid flow control method | |
| CN203098176U (en) | Novel metering pump | |
| CN109012047B (en) | Low oxygen generation system capable of simulating high primary oxygen concentration | |
| CN203147284U (en) | Outlet pressure balance adjusting device of natural gas gate station | |
| CN205618772U (en) | Can realize pressure control's butterfly valve | |
| CN204273207U (en) | A kind of leaf water control device | |
| CN212803161U (en) | Self-operated automatic well opening and closing system | |
| CN209677329U (en) | Flavoring pipeline control system | |
| CN211098447U (en) | Intelligent automatic hydrogen-nitrogen proportioning device | |
| CN204373966U (en) | A kind of sampling thief flow-control module | |
| CN203459028U (en) | Ammonia water liquor diluting device | |
| CN104671640B (en) | Mechanism of I. S. Machine fuse air-path control system | |
| CN207871923U (en) | A kind of gas mixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |