CN2918963Y - Standard gas providing apparatus - Google Patents
Standard gas providing apparatus Download PDFInfo
- Publication number
- CN2918963Y CN2918963Y CN 200620102472 CN200620102472U CN2918963Y CN 2918963 Y CN2918963 Y CN 2918963Y CN 200620102472 CN200620102472 CN 200620102472 CN 200620102472 U CN200620102472 U CN 200620102472U CN 2918963 Y CN2918963 Y CN 2918963Y
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- China
- Prior art keywords
- aperture
- standard gas
- standard
- choked flow
- flow piece
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Abstract
The utility model discloses a standard gas supply device and pertains to the instrument field, comprising a gas cylinder filled with standard gas, a pressure adjustment and display device that is connected with the gas outlet of the standard gas cylinder. The standard gas supply device is also composed of a keyhole flow-reducing device that restricts the flow section of standard gas and is positioned at the gas outlet of the pressure adjustment and display device. The utility model provides a standard gas supply device with the advantages of low costs, convenient adjustment, and easy carrying.
Description
Technical field
The utility model belongs to instrument field, relates in particular to standard gas generator.
Background technique
At present, gas analyzing apparatus such as gas analysis system, gas transmitter are used for the concentration of measurement gas in field extensive application such as iron and steel, petrochemical industry, chemical industry; And make corresponding measure according to the concentration value of measuring, as reporting to the police, improve production technology etc.After gas analyzing apparatus used a period of time, owing to reasons such as wearing out of components and parts, the concentration value that device records can drift about, and so just needs to use the standard gas of concentration known to remove calibration gas analytical equipment again.
General standard gas generator has two kinds at present: 1) calibrating gas bottle of standard gas is housed, is equipped with on the bottle and is with manometric reduction valve; 2) calibrating gas bottle of standard gas is housed, is equipped with on the bottle and is with manometric reduction valve, connect flowmeter then.
When using first kind of device that standard gas is provided, come the coarse adjustment gas flow by regulating reduction valve, the shortcoming of this device is that the standard throughput is not easy control, has no way of knowing and the control gaseous flow waste standard gas.When using second kind of device that standard gas is provided, first coarse adjustment reduction valve is regulated the gas flow that the flowmeter acquisition needs again, and the control criterion throughput is not wasted standard gas exactly; But the important point is, do not need the flow control to of standard gas value is very accurately only needed to remain on a general suitable flow to standard gas and gets final product at timing signal, therefore, the shortcoming of such device is: 1) installation cost height, be added with flowmeter in this device, and flowmeter price height; 2) adjusting is loaded down with trivial details, regulates the ability control flow rate by secondary; 3) during field calibration, be with the standard device of air is that the gas with various analytical equipment is demarcated, and the standard gas generator inconvenience that has flowmeter is carried.
Summary of the invention
In order to solve existing standard gas generator cost height, to regulate loaded down with trivial details, as to carry inconvenience deficiency, the utility model provides the standard gas generator that a kind of cost is low, adjusting is simple, easy to carry.
The technical solution adopted in the utility model is:
A kind of standard gas generator comprises gas cylinder, pressure adjusting and indicating device that standard gas is housed, and pressure is regulated the air outlet that is connected calibrating gas bottle with indicating device; Described standard gas generator also comprises the aperture choke apparatus in limitation standard entraining air stream cross section, and the aperture choke apparatus is installed in the air outlet of pressure adjusting and indicating device.
Further, described aperture choke apparatus comprises the aperture choked flow piece, and the aperture choked flow piece is the middle part that has aperture.
Further again, described aperture choke apparatus is made up of aperture choked flow piece, housing, termination, joint, and the aperture choked flow piece is installed in the housing, and termination and joint are installed in the housing two ends, and the termination connects pressure and regulates and indicating device.
Or described aperture choke apparatus is made up of aperture choked flow piece, fixed block, and the aperture choked flow piece compresses the air outlet that is installed in pressure adjusting and indicating device by fixed block.
Further, described pressure adjusting and indicating device comprise reduction valve and pressure gauge.
Described aperture choked flow piece is the aperture spoiler.
Working principle of the present utility model is: as shown in Figure 5, the standard atmosphere pressure power P of small aperture D, aperture choked flow piece upstream that flows through the standard throughput L of aperture choke apparatus and aperture choked flow piece is relevant.The standard throughput that provides at first, as required designs the small aperture of definite aperture choked flow piece and the standard atmosphere pressure power of aperture choked flow piece upstream; Concrete timing signal is regulated reduction valve, and the standard atmosphere pressure power that the reading of pressure-indication means is promptly flowed out is described design load, thereby the standard throughput that flows out from the aperture choke apparatus is satisfied the demand.
Compared with prior art, the beneficial effects of the utility model are: (1) cost is low, only needs an aperture choke apparatus to get final product the control criterion throughput, and simple in structure, parts are few, and are cheap, the reliability height; (2) regulate simply, only regulate and indicating device, make the standard atmosphere pressure power of outflow reach suitable value and get final product with regulating pressure; (3) volume is little, and is easy to carry.
Description of drawings
Fig. 1 is a kind of structural representation of standard gas generator;
Fig. 2 is the enlarged view of the aperture choke apparatus among Fig. 1;
Fig. 3 is the structural representation of another kind of standard gas generator;
Fig. 4 is the enlarged view of the aperture choke apparatus among Fig. 3;
Fig. 5 is the graph of relation of the small aperture of the upstream standard atmosphere pressure power that flows through the standard throughput of aperture choke apparatus and aperture choke apparatus, aperture choked flow piece.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1:
As Fig. 1, Fig. 2, shown in Figure 5, a kind of standard gas generator, comprise the gas cylinder 1 that standard gas is housed, the aperture choke apparatus 4 in pressure adjusting and indicating device, limitation standard entraining air stream cross section, pressure is regulated and indicating device comprises reduction valve 2, pressure gauge 3, described aperture choke apparatus 4 is made up of aperture choked flow piece 41, housing 42, termination 43, joint 44, aperture choked flow piece 41 is tinsels that a centre has circular hole, aperture choked flow piece 41 is installed in the housing 42, termination 43 and joint 44 are installed in housing 42 two ends, and termination 43 connects reduction valve 2.
The working method of standard gas generator is: regulate reduction valve 2, the standard atmosphere pressure power that the reading of pressure gauge 3 is promptly flowed out is appropriate value, as 0.15MPa, small aperture D=1.5mm, this moment, the aperture choke apparatus was operated in choked flow (choked flow) state (certainly, also can be operated in the unblock stream mode, as the inelastic region among Fig. 5): the reading of the flow of standard gas and pressure gauge 3 is approximately linear, thereby reaches the purpose of control criterion throughput by the pressure of adjustment criteria gas.
Embodiment 2:
As Fig. 3, Fig. 4, shown in Figure 5, a kind of standard gas generator comprises the aperture choke apparatus 4 in gas cylinder 1, reduction valve 2, pressure gauge 3 and limitation standard entraining air stream cross section that standard gas is housed; Aperture choke apparatus 4 is made up of aperture choked flow piece 41, fastening piece 5, joint 44, aperture choked flow piece 41 is metalworks that a centre has circular hole, compress the place, air outlet that is installed in reduction valve 2 by fastening piece 5, joint 44 is installed in a side of fastening piece 5, is convenient to connect tracheae.Fastening piece 5 is set screw nut or other like parts.
Working method is identical with embodiment 1.
Claims (6)
1, a kind of standard gas generator comprises gas cylinder, pressure adjusting and indicating device that standard gas is housed, and pressure is regulated the air outlet that is connected calibrating gas bottle with indicating device; It is characterized in that: described standard gas generator also comprises the aperture choke apparatus in limitation standard entraining air stream cross section, and the aperture choke apparatus is installed in the air outlet of pressure adjusting and indicating device.
2, standard gas generator according to claim 1, it is characterized in that: described aperture choke apparatus comprises the aperture choked flow piece, the aperture choked flow piece is the middle part that has the hole.
3, standard gas generator according to claim 2, it is characterized in that: described aperture choke apparatus is made up of aperture choked flow piece, housing, termination, joint, the aperture choked flow piece is installed in the housing, and termination and joint are installed in the housing two ends, and the termination connects pressure and regulates and indicating device.
4, standard gas generator according to claim 2, it is characterized in that: described aperture choke apparatus is made up of aperture choked flow piece, fixed block, and the aperture choked flow piece compresses the air outlet that is installed in pressure adjusting and indicating device by fixed block.
5, according to the described standard gas of one of claim 1-4 generator, it is characterized in that: described pressure is regulated and indicating device comprises reduction valve and pressure gauge.
6, according to the described standard gas of one of claim 2-4 generator, it is characterized in that: described aperture choked flow piece is the aperture spoiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620102472 CN2918963Y (en) | 2006-04-07 | 2006-04-07 | Standard gas providing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620102472 CN2918963Y (en) | 2006-04-07 | 2006-04-07 | Standard gas providing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2918963Y true CN2918963Y (en) | 2007-07-04 |
Family
ID=38216781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620102472 Expired - Fee Related CN2918963Y (en) | 2006-04-07 | 2006-04-07 | Standard gas providing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2918963Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422071A (en) * | 2009-03-11 | 2012-04-18 | 威克特设备公司 | Compact robust gas pressure regulator |
-
2006
- 2006-04-07 CN CN 200620102472 patent/CN2918963Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102422071A (en) * | 2009-03-11 | 2012-04-18 | 威克特设备公司 | Compact robust gas pressure regulator |
| CN102422071B (en) * | 2009-03-11 | 2014-03-05 | 威克特设备公司 | Compact robust gas pressure regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FOCUSED PHOTONICS (HANGZHOU), LTD. Free format text: FORMER NAME: JUGUANG SCIENCE AND TECHNOLOGY (HANGZHOU) CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 760 Patentee after: Focused Photonics (Hangzhou) Inc. Address before: Hangzhou City, Zhejiang province Binjiang District 310052 shore road 1180 No. 3 Patentee before: Juguang Sci. & Tech. (Hangzhou) Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20130407 |