CN203772812U - Atmospheric pressure regulating valve for gas chromatograph - Google Patents
Atmospheric pressure regulating valve for gas chromatograph Download PDFInfo
- Publication number
- CN203772812U CN203772812U CN201420079388.4U CN201420079388U CN203772812U CN 203772812 U CN203772812 U CN 203772812U CN 201420079388 U CN201420079388 U CN 201420079388U CN 203772812 U CN203772812 U CN 203772812U
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- CN
- China
- Prior art keywords
- pressure
- gas chromatograph
- regulator valve
- cpu
- air pressure
- 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.)
- Expired - Lifetime
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- 230000001105 regulatory effect Effects 0.000 title abstract 3
- 238000009434 installation Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 41
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000016649 Copaifera officinalis Species 0.000 description 1
- 239000004859 Copal Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Abstract
The utility model provides an atmospheric pressure regulating valve for a gas chromatograph. The atmospheric pressure regulating valve for the gas chromatograph comprises a shell, an air outlet, an air outlet chamber and a pressure sensor, wherein the air outlet is formed in the shell; the air outlet chamber is located in the shell and communicated with the air outlet; the pressure sensor is arranged on the shell in a sealing manner; a pressure sensing part of the pressure sensor is communicated with the air outlet chamber to detect the pressure of the air in the air outlet chamber, and the detected pressure signal is converted into corresponding electric signal which is transmitted to a CPU (Central Processing Unit) at the side of the gas chromatograph; the CPU is connected with a display screen or an external device and is used for transmitting the atmospheric pressure value and/or flow value obtained on the basis of the electric signal in a digital or graph form to the display screen or the external device.
Description
Technical field
The utility model relates to a kind of gas chromatograph air pressure pressure regulator valve.
Background technology
Current, gas chromatograph is widely used in environment measuring, food hygiene, field of petrochemical industry.Because the gas correspondence of different flow (mL/min) different gaseous tensions, therefore for the flow to gas to be measured is controlled, air pressure pressure regulator valve is installed on gas chromatograph, is flow through the gaseous tension of this air pressure pressure regulator valve by adjusting, thereby control gas flow.
Fig. 3 is the schematic diagram of the connected mode of explanation gas chromatograph of the prior art pressure regulator valve.As shown in Figure 3, the air intake opening 7 of air pressure pressure regulator valve 13 and gas outlet 8 are connected to air inlet pipeline 11 and outlet pipe 12, control the charge flow rate of gas chromatograph by air pressure adjustment member 9, and in the outlet pipe 12 of air pressure pressure regulator valve 13 setting pressure table 10 in order to monitoring pressure in real time numerical value.Tensimeter 10 and air pressure pressure regulator valve 13 use fixed heads 14 are fixed, and are converted and are obtained corresponding gas flow value by the demonstration numerical value to tensimeter 10, relatively regulate with needed flow value.
But, problem is, carry out in the prior art flow value while arranging, need first adjustable pressure adjustment means 9, the numerical value of observing again tensimeter 10 converses corresponding flow value, and this just must make operator know the corresponding relation of various gas flows and pressure, or by consulting the chart in operation instruction data, just can estimate current gas flow value, for operator, bother very much like this and easily make mistakes.And also fixation pressure table 10 is installed in the outlet pipe 12 of air pressure pressure regulator valve 13 needs larger space, has increased pipe arrangement quantity, is unfavorable for the reduction of cost and the miniaturization of product simultaneously.
Utility model content
The utility model proposes in order to solve the above-mentioned problems in the prior art.
According to an example of the present utility model, a kind of gas chromatograph air pressure pressure regulator valve is provided, comprise housing; Be positioned at the gas outlet on housing; The chamber of giving vent to anger, the described chamber of giving vent to anger is positioned at described housing, and be communicated with described gas outlet, it is characterized in that, also comprise pressure transducer, described pressure transducer is installed on described housing hermetically, the pressure-sensing portion that makes described pressure transducer with described in the chamber of giving vent to anger be communicated with, pressure to described outlet chamber indoor gas detects, and the pressure signal detecting is converted to corresponding electric signal output.The electric signal of described pressure transducer output directly carry or by being arranged on the CPU(central processing unit that flows to gas chromatograph side after the prime amplifier of described air pressure pressure regulator valve side amplifies), CPU is connected to display screen or external device (ED), and the atmospheric pressure value of the numeral obtaining based on this electric signal or diagrammatic form and/or flow value are sent to display screen or external device (ED) by CPU.
The gas chromatograph providing according to the utility model air pressure pressure regulator valve, owing to adopting the design of blocking, is directly connected in valve body by this pressure transducer, is not arranged in outlet pipe, has therefore reduced the number of connection of pipe arrangement, has saved cost; And, by being electrically connected of printed circuit board (PCB) and exterior display screen, omitting manometric configuration, when installation, only need be fixed air pressure pressure regulator valve, compress the structure space of instrument, be conducive to the miniaturization of product; Meanwhile, transfer to program to complete with the conversion of corresponding flow gaseous tension, and show and replace traditional tensimeter to show by numeral, saved the time of consulting pressure-flow conversion formula or form, greatly facilitate operator and use.
Brief description of the drawings
Fig. 1 is that explanation is according to the schematic diagram of the structure of the air pressure pressure regulator valve of the utility model embodiment.
Fig. 2 is that explanation is according to the side view of the structure of the air pressure pressure regulator valve of the utility model embodiment.
Fig. 3 is the schematic diagram of the pipe arrangement connected mode of explanation air pressure pressure regulator valve of the prior art.
Fig. 4 is that explanation is according to the schematic diagram of the pipe arrangement connected mode of air pressure pressure regulator valve of the present utility model.
Embodiment
1 explanation is according to the structure of the air pressure pressure regulator valve of the utility model embodiment with reference to the accompanying drawings.
As shown in Figure 1, air pressure pressure regulator valve 13 of the present utility model comprises housing 1, air inlet chamber (not shown), the chamber of giving vent to anger (not shown), air intake opening 7, gas outlet 8, pressure transducer 2, printed circuit board (PCB) 5 and air pressure adjustment means 9.Air pressure pressure regulator valve 13 use fixed heads 14 are fixed, air inlet chamber in housing 1 and the chamber of giving vent to anger are communicated with the air intake opening 7 and the gas outlet 8 that are positioned on housing 1 respectively, and be connected with the pipeline of carrying gas by them, gas to be measured (as hydrogen, air and make-up gas etc.) is from air intake opening 7 input air pressure pressure regulator valves 13, export from gas outlet 8, gas flow can be controlled by adjustable pressure adjustment means 9.
Pressure transducer 2 is positioned on the face contrary with the installation surface of the air pressure adjustment member 9 arranging on the housing 1 of air pressure pressure regulator valve 13.Pressure transducer 2 is installed on the housing of air pressure pressure regulator valve 13 hermetically, particularly, according in specific embodiment of the utility model, pressure transducer 2 inserts in air pressure pressure regulator valve 13 by packing ring 4, sealed by O type circle 3, and the pressure-sensing portion of pressure transducer 2 front ends is communicated with the chamber of giving vent to anger, in order to detect the gaseous tension in gas chamber, and the pressure signal detecting is converted to corresponding electric signal output.On pressure transducer 2, be fixed with printed circuit board (PCB) 5, on printed circuit board (PCB) 5, be fixed with the circuit component as prime amplifier, pressure transducer 2 detects the gaseous tension that outlet chamber is indoor, pressure signal is converted to the prime amplifier that electric signal flows on printed circuit board (PCB) 5 to be amplified, the electric signal of prime amplifier output is sent to the CPU of gas chromatograph side via wire 6, by the processing of CPU plug-in, obtain the flow value that this gas to be measured is corresponding, and numeral shows or chart demonstration on the display screen of the gas chromatograph being connected with CPU.Operator can, according to the gas flow value adjustable pressure adjustment means 9 showing in real time on display screen, increase or reduce outlet chamber indoor gas pressure, to obtain needed gas flow.
Fig. 4 is that explanation is according to the schematic diagram of the pipe arrangement connected mode of air pressure pressure regulator valve of the present utility model.As shown in Figure 4, adopt pressure regulator valve of the present utility model, because pressure transducer 2 is directly connected in air pressure pressure regulator valve 13, as long as therefore provide air inlet pipeline 11 and 12 two pipe arrangements of outlet pipe can realize voltage regulation function.
The P2000352G model pressure transducer that the pressure transducer 2 using in the utility model is manufactured for COPAL JAPAN company, but its kind is not limited to this, anyly can be installed on that air pressure pressure regulator valve detects the indoor gaseous tension of the outlet chamber of this air pressure pressure regulator valve and the pressure transducer of output pressure signal all can be used for realization of the present utility model.
In air pressure pressure regulator valve 13, also the force value of gas to be measured can be presented on display screen, or flow value and/or force value are sent to the external device (ED) being connected with CPU again.
Again, in air pressure pressure regulator valve 13, the position of pressure transducer 2 is also only not limited to the position shown in Fig. 1, corresponding to the different structure of gas chromatograph, pressure transducer 2 can be arranged on each position on face identical with gas outlet 8 with air intake opening 7 on housing 1, and the outer peripheral face that also can be positioned at housing 1 is first-class.As long as its installation site and insertion depth can make the pressure-sensing portion of pressure transducer 2 be communicated with the chamber of giving vent to anger, and make sealing between pressure transducer 2 and patchhole.
In embodiment of the present utility model, will be converted to flow value from the pressure signal of prime amplifier and show by the CPU of gas chromatograph side, but also can, without conversion, directly demonstrate the gas pressure value in gas chamber again.And, according to the different pressure transducer using, also can be without amplification, the CPU that the electric signal of pressure transducer output is directly delivered to gas chromatograph side processes.
The air pressure pressure regulator valve of the embedment pressure sensor assembly providing according to the utility model, owing to adopting the design of blocking, is directly connected in valve body by this pressure transducer, is not arranged in outlet pipe, has therefore reduced the number of connection of pipe arrangement, has saved cost; And, by being electrically connected of printed circuit board (PCB) and exterior display screen, omitting manometric configuration, when installation, only need be fixed air pressure pressure regulator valve, compress the structure space of instrument, be conducive to the miniaturization of product; Meanwhile, transfer to program to complete with the conversion of corresponding flow gaseous tension, and show and replace traditional tensimeter to show by numeral, saved the time of consulting pressure-flow conversion formula or form, greatly facilitate operator and use.
The utility model is not limited to above-described embodiment, so that distortion in the scope of claim and displacement are all possible.
Symbol description:
1 housing
2 pressure transducers
3 O type circles
4 packing rings
5 printed circuit board (PCB)s
6 wires
7 air intake openings
8 gas outlets
9 air pressure adjustment members
10 tensimeters
11 air inlet pipelines
12 outlet pipes
13 air pressure pressure regulator valves
14 fixed heads.
Claims (5)
1. a gas chromatograph air pressure pressure regulator valve, comprises
Housing,
Be positioned at the gas outlet on housing,
The chamber of giving vent to anger, described in the chamber of giving vent to anger be positioned at described housing, and be communicated with described gas outlet,
It is characterized in that, also comprise
Pressure transducer, described pressure transducer is installed on described housing hermetically, the pressure-sensing portion that makes described pressure transducer with described in the chamber of giving vent to anger be communicated with, the pressure of described outlet chamber indoor gas is detected, and the pressure signal detecting is converted to corresponding electric signal output.
2. gas chromatograph air pressure pressure regulator valve as claimed in claim 1, wherein, is characterized in that,
Described pressure transducer is positioned on the face contrary with the installation surface of the air pressure adjustment member arranging on described housing.
3. gas chromatograph air pressure pressure regulator valve as claimed in claim 1, wherein, is characterized in that,
Described pressure transducer is positioned on the outer peripheral face of described housing.
4. as claim 1 or 2 or 3 gas chromatograph of being recorded air pressure pressure regulator valves, it is characterized in that,
The electric signal of described pressure transducer output is fed to the CPU of gas chromatograph side,
CPU is connected to display screen or external device (ED), and the atmospheric pressure value of the numeral obtaining based on described electric signal or diagrammatic form and/or flow value are sent to display screen or described external device (ED) by CPU.
5. the gas chromatograph of recording as claim 4 air pressure pressure regulator valve, is characterized in that,
The electric signal of described pressure transducer output is by being arranged on the CPU that flows to gas chromatograph side after the prime amplifier of described air pressure pressure regulator valve side amplifies, CPU is connected to display screen or external device (ED), and the atmospheric pressure value of the numeral obtaining based on described electric signal or diagrammatic form and/or flow value are sent to display screen or described external device (ED) by CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079388.4U CN203772812U (en) | 2013-12-13 | 2014-02-24 | Atmospheric pressure regulating valve for gas chromatograph |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320827504 | 2013-12-13 | ||
| CN201320827504.1 | 2013-12-13 | ||
| CN201420079388.4U CN203772812U (en) | 2013-12-13 | 2014-02-24 | Atmospheric pressure regulating valve for gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203772812U true CN203772812U (en) | 2014-08-13 |
Family
ID=51289990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079388.4U Expired - Lifetime CN203772812U (en) | 2013-12-13 | 2014-02-24 | Atmospheric pressure regulating valve for gas chromatograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203772812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538358A (en) * | 2020-05-12 | 2020-08-14 | 行益科技(宁波)有限公司 | Thin type precision voltage regulating system |
-
2014
- 2014-02-24 CN CN201420079388.4U patent/CN203772812U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538358A (en) * | 2020-05-12 | 2020-08-14 | 行益科技(宁波)有限公司 | Thin type precision voltage regulating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |