CN201135861Y - Gases accurate proportioning device - Google Patents
Gases accurate proportioning device Download PDFInfo
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- CN201135861Y CN201135861Y CNU2007203030451U CN200720303045U CN201135861Y CN 201135861 Y CN201135861 Y CN 201135861Y CN U2007203030451 U CNU2007203030451 U CN U2007203030451U CN 200720303045 U CN200720303045 U CN 200720303045U CN 201135861 Y CN201135861 Y CN 201135861Y
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- gas
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- pressure
- polynary
- control system
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Abstract
The utility model discloses a multi-gas type precise proportioning device, which comprises a control system which can be used for precisely proportioning the gas flow of multiple gas types and a gas mixer. The control system comprises N group(s) of gas input composite systems, and N is a positive integer larger than or equal to 1; the gas input composite system comprises a preceding stage voltage regulator matched and communicated with a gas source input interface and communicated with a gas path in sequence, a secondary voltage regulator, a pressure sensor, an electromagnetic valve, a mass flow sensor, an adjusting valve core and a check valve; the pressure sensor, the electromagnetic valve, the mass flow sensor and the adjusting valve core in the gas input composite system are respectively and electrically communicated with a computer program controller. The whole operating process of the multi-gas type precise proportioning device is computed and controlled in real time by adopting the computer program controller completely, the gas flow pressure and the flow rate are adjusted in real time and dynamically, and the stable proportioning gas flow rate can be kept during the fluctuation of the gas source. The multi-gas type precise proportioning device has the advantages of novel structure, good system stability, short pressure building-up time, accurate control ratio, stable pressure maintaining and constant flow quantity.
Description
Technical field
The utility model relates to magnesium alloy processing equipment, relates in particular to a kind of accurate matching device of polynary gas kind.
Background technology
Present gas mixing ratio device almost all adopts suspended body flowmeter control gas flow, and this straightforward procedure does not have control accuracy, and is leveraged to modern magnesium alloy production industry.Maximum problem is when supply pressure fluctation, can directly disturb the accuracy of proportioning flow, and during special gas and injection rate is many, large tracts of land corrodes parts such as crucible, and while residual gas leakage causes environmental pollution.The time and gas has lacked under high-temperature liquid state, magnesium alloy oxidation slagging is serious, influences product quality.And magnesium alloy liquid is influenced by the protection of special gas, directly causes liquid fluidity variation, the oxidation of magnesium alloy sharply to increase, pour into a mould influence safety in production and environmental protection such as line clogging.
Summary of the invention
Technical problem to be solved in the utility model is the present situation at prior art, and a kind of accurate matching device of building the polynary gas kind of fast, proportion speed of pressure time, pressure stability, constant flow is provided.It can still keep stable proportioning gas flow when source of the gas fluctuates, be applicable to the magnesium-alloy smelting furnace gas shield device.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of accurate matching device of polynary gas kind, wherein: comprise accurately control system, the gas mixer of matching polybasic gas kind gas flow, control system includes N group gas input combined system, and the N span is the positive integer more than or equal to 1; Gas input combined system comprises prime voltage-stablizer, secondary pressure regulator, pressure sensor, magnetic valve, mass flow sensor, adjustment spool and the check-valves that cooperates connection source of the gas input interface and order gas circuit to be communicated with; Pressure sensor in the gas input combined system, magnetic valve, mass flow sensor, adjustment spool electrical circuit respectively are communicated with the computer program controller.
In order to obtain better proportioning effect, the measure of taking also comprises: check-valves is that check-valves is pressed in fine motion.
Polynary gas kind is SF
6And N
2Two kinds of gases or other extraordinary gas kinds, accurately the distributing precision scope be error at the most the established standards value 0.1% in.
Described device can be used with magnesium-alloy smelting furnace, and it can also be applicable to the distribution work station of multipurpose, the combination of multiple source of the gas in addition.
Compared with prior art, the utility model comprises accurately control system, the gas mixer of matching polybasic gas kind gas flow, and control system includes N group gas input combined system, and the N span is the positive integer more than or equal to 1; Gas input combined system comprises prime voltage-stablizer, secondary pressure regulator, pressure sensor, magnetic valve, mass flow sensor, adjustment spool and the check-valves that cooperates connection source of the gas input interface and order gas circuit to be communicated with; Pressure sensor in the gas input combined system, magnetic valve, mass flow sensor, adjustment spool telecommunication respectively are communicated with the computer program controller.The whole service process of its work all adopts the computer program controller to calculate control in real time, and stream pressure and flow are carried out real-time dynamic adjustments, still can keep stable proportioning gas flow when source of the gas fluctuates.Whole device have novel structure, the stability of a system good, build the pressure time short, control ratio is accurate, pressurize is stable, the advantage of constant flow.
Description of drawings
Fig. 1 is the combining structure schematic diagram of the utility model embodiment;
Fig. 2 is one group of gas input combined system schematic diagram among Fig. 1;
Fig. 3 is the gas mixing ratio control flow chart among Fig. 2.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Fig. 1 is to shown in Figure 3, and a kind of accurate matching device of polynary gas kind comprises accurately control system, the gas mixer of matching polybasic gas kind gas flow, and control system includes N group gas input combined system, and the N span is the positive integer more than or equal to 1; Gas input combined system comprises prime voltage-stablizer 1, secondary pressure regulator 2, pressure sensor 3, magnetic valve 4, mass flow sensor 5, adjustment spool 6 and the check-valves 7 that cooperation connection source of the gas input interface and order gas circuit are communicated with; Pressure sensor 3 in the gas input combined system, magnetic valve 4, mass flow sensor 5, adjustment spool 6 electrical circuit respectively are communicated with the computer program controller.
Gas enters the input combined system from the source of the gas input interface, gas carries out high pressure through prime voltage-stablizer 1 and goes to low pressure and give stationary value, adjust operating pressure by secondary pressure regulator 2 then, carrying out back level inspection via pressure sensor 3 presses, the measuring system pressure signal inputs to the computer program control system, set duty control solenoid valve 4 by the computer program control system again and cut-off, carry out real-time pressure regulation, reach the purpose of constant air pressure.When gas flows into mass flow controller 5, the detection R inductive reactance of controller inside, by the gas molecule quality testing, judge the molecular mass coefficient of the gas of different variablees, after carrying out the computing amplification, send the data-signal after the detection, one tunnel signal feedback mass flow controller 5 is own, adjust in real time adjusting spool 6 apertures, another road signal input computer program control system is carried out data relatively, the result is fed back to control system carry out the constant current compensation, at this moment adjust spool 6 and adjust the aperture variation, realized the purpose of control constant current, press check-valves 7 that gas is injected in the special stainless steel gas blender through fine motion again according to Dynamic Signal, the output of realization current stabilization, at this moment source of the gas has been finished whole control process.
Identical therewith, the gas that accurate matching device comprised of looking whole polynary gas kind is imported the quantity of combined system, another kind of gas or a greater variety of gas can be imported combined system through other gas, injects simultaneously in the same gas mixer.
Experimental measurement data: preparation SF
6And N
2During two kinds of elemental gas; under the operating pressure of bleed pressure 3.5bar to 4bar, prepare 50 liters safeguard protection gas, only need 1 minute to 2 minutes; and control distributing precision scope be error at the most in 0.1% scope of established standards value, consistent through composition testing setup value with actual value.Device production application in the magnesium-alloy smelting furnace of 500 kilograms of capacity, combustion-supporting protection is respond well, the non-oxidation combustion phenomena, the scum silica frost rate can be controlled in 0.1%.
Though the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (3)
1, a kind of accurate matching device of polynary gas kind, it is characterized in that: comprise accurately control system, the gas mixer of matching polybasic gas kind gas flow, described control system includes N group gas input combined system, and the N span is the positive integer more than or equal to 1; Described gas input combined system comprises prime voltage-stablizer (1), secondary pressure regulator (2), pressure sensor (3), magnetic valve (4), mass flow sensor (5), adjustment spool (6) and the check-valves (7) that cooperation connection source of the gas input interface and order gas circuit are communicated with; Pressure sensor (3) in the described gas input combined system, magnetic valve (4), mass flow sensor (5), adjustment spool (6) electrical circuit respectively are communicated with the computer program controller.
2, the accurate matching device of a kind of polynary gas kind according to claim 1 is characterized in that: described check-valves (7) is pressed check-valves for fine motion.
3, the accurate matching device of a kind of polynary gas kind according to claim 1 and 2 is characterized in that: described polynary gas kind is SF
6And N
2Two kinds of gases, described accurate distributing precision scope be error at the most the established standards value 0.1% in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203030451U CN201135861Y (en) | 2007-12-05 | 2007-12-05 | Gases accurate proportioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203030451U CN201135861Y (en) | 2007-12-05 | 2007-12-05 | Gases accurate proportioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201135861Y true CN201135861Y (en) | 2008-10-22 |
Family
ID=40036549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203030451U Expired - Lifetime CN201135861Y (en) | 2007-12-05 | 2007-12-05 | Gases accurate proportioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201135861Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349926A (en) * | 2013-05-31 | 2013-10-16 | 济南华信自动化工程有限公司 | Fully-automatic proportioning bin |
| CN103349925A (en) * | 2013-05-31 | 2013-10-16 | 济南华信自动化工程有限公司 | Switchable gas proportioning bin |
| CN103551072A (en) * | 2013-10-25 | 2014-02-05 | 国家电网公司 | Absolute pressure value quantitative mixing gas preparation device and method |
-
2007
- 2007-12-05 CN CNU2007203030451U patent/CN201135861Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349926A (en) * | 2013-05-31 | 2013-10-16 | 济南华信自动化工程有限公司 | Fully-automatic proportioning bin |
| CN103349925A (en) * | 2013-05-31 | 2013-10-16 | 济南华信自动化工程有限公司 | Switchable gas proportioning bin |
| CN103551072A (en) * | 2013-10-25 | 2014-02-05 | 国家电网公司 | Absolute pressure value quantitative mixing gas preparation device and method |
| CN103551072B (en) * | 2013-10-25 | 2014-09-03 | 国家电网公司 | Absolute pressure value quantitative mixing gas preparation device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO XUNHUI ELECTRICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: LU RUHUI Effective date: 20101124 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20101124 Address after: 315800 No. 498 middle Qian Tang Road, Beilun District, Zhejiang, Ningbo Patentee after: Ningbo Xunhui Electric Appliance Co., Ltd. Address before: 315800 No. 498 middle Qian Tang Road, Beilun District, Zhejiang, Ningbo Patentee before: Lu Ruhui |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081022 |
|
| CX01 | Expiry of patent term |