CN105402454A - Gas supply adjustment device based on pressure reducers - Google Patents
Gas supply adjustment device based on pressure reducers Download PDFInfo
- Publication number
- CN105402454A CN105402454A CN201510514363.1A CN201510514363A CN105402454A CN 105402454 A CN105402454 A CN 105402454A CN 201510514363 A CN201510514363 A CN 201510514363A CN 105402454 A CN105402454 A CN 105402454A
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- Prior art keywords
- pressure
- gas
- decompressor
- pressure regulation
- gas supply
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flow Control (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a gas supply adjustment device based on pressure reducers. The gas supply adjustment device comprises a work gas tank, a pressure reducer inlet gas supply pipeline, a pressure reducer set, a pressure reducer outlet gas supply pipeline, a sonic nozzle, a large-diameter pneumatic valve, a pressure reducer pressure-adjustment gas supply pipeline, a pressure-adjustment gas surge tank, a pressure-adjustment gas exhausting valve, a pressure-adjustment gas inlet valve, a high-pressure pressure-adjustment gas supply pipeline, a pressure-adjustment gas tank and a measurement and control module. The pressure reducer set is formed by connecting the multiple gas-adjustment type pressure reducers in parallel, each pressure reducer is connected with the pressure-adjustment gas surge tank, the pressure-adjustment gas surge tank is provided with the pressure-adjustment gas inlet valve and the pressure-adjustment gas exhausting valve, and accurate control over the pressure adjustment of the pressure reducers is realized by controlling opening and closing of the pressure-adjustment gas inlet valve and the pressure-adjustment gas exhausting valve. The multiple pressure reducers are connected in parallel, the pressure of the pressure-adjustment gas surge tank is adjusted and controlled in real time by dynamically measuring the outlet flow of the pressure reducers, gas supply with the flow of tens of kilos per second and hundreds of kilos per second is achieved, and the supplied gas pressure and flow can be accurately controlled and adjusted in real time.
Description
Technical field
The present invention relates to field of aerospace technology, particularly relate to a kind of gas supply regulating device.
Background technique
In some Major Ground Test systems of field of aerospace technology, as liquid or solid rocket motor high-altitude simulation testing system, aeroengine high-altitude simulation testing system, air-breathing propulsion free jet test system, combination propulsion trial system, large-scale pneumatic equipment etc., normal needs supply big-flow high-pressure air, oxygen or nitrogen in real time, also need to carry out in real time accurately control and regulation to the pressure of supply gas and flow simultaneously.The source of the gas of supply gas (air, oxygen or nitrogen) is from high pressure gas storage tank, high pressure gas storage tank in continuous deflation course not only pressure in continuous decline, due to adiabatic expansion effect, the temperature of the gas of storage tank is also in continuous decline, therefore, in the process of the continuous air feed of high pressure storage tank large discharge, the accurate control and regulation difficulty that realize supply gas flow and pressure is very large.
In more current engineer applied, the supply of large discharge gas generally adopts modulating valve scheme, namely by the dynamic throttling effect of modulating valve, stabilize to control objectives with modulating valve downstream pressure, ensure the stable of modulating valve downstream pressure by the orifice size changing modulating valve in real time.There is following shortcoming in this gas method of supplying: (1) modulating valve from start to and realize gas to stablize response time of supply longer, especially to gas supply flow reach tens kilograms per second to hundreds of kilogram large flux control valve per second, response time needs the several seconds to arrive tens of second, and gas waste is very large; (2) based on the working principle of modulating valve, be difficult to the gas supply being realized large discharge by multiple stage parallel connection, and the development difficulty of super-flow modulating valve is large, cost is high, easily occurs system concussion problem; (3) because modulating valve is using outlet pressure as control objectives, cannot compensate the change of gas supply temperature, therefore in continuous air feed process, even if supply gas pressure remains stable, and the gas supply flow of reality is at consecutive variations, the target of stability of flow cannot be reached.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of gas supply regulating device based on decompressor, this device has pressure and the flow that can accurately control and regulate supply gas in real time, there is system scale and be easy to the features such as expansion, good operating stability, the tens of kilograms of supply requirements to hundreds of kilograms of air per second, oxygen or nitrogen per second can be met.
For solving the problems of the technologies described above, technological scheme of the present invention is as follows:
The present invention adopts the overall technological scheme of " many decompressors group parallel connection+pressure regulation atmospheric pressure Dynamic controlling " to realize the supply of large discharge gas and fine adjustment.
Based on a gas supply regulating device for decompressor, comprise work gas tank, decompressor entrance supply air line, decompressor group, decompressor outlet supply air line, sonic nozzle, heavy caliber pneumatic valve, decompressor pressure regulation gas supply air line, pressure regulation gas surge tank, pressure regulation gas outlet valve, pressure regulation gas suction valve, high pressure pressure regulation gas supply air line, pressure regulation gas tank and control module.
Described work gas tank is for storing high-pressure air feed gas, and determine volume and the quantity of storage tank according to the flow of working gas supply and operating time, multiple stage work gas tank realizes pressure balance by pipeline connection.
Described pressure regulation gas tank is used for providing decompressor pressure regulation source of the gas.
Described decompressor group is formed in parallel by multiple stage air-regulation type decompressor; Every platform decompressor entrance is connected with work gas tank by decompressor entrance supply air line; Every platform decompressor outlet is communicated with by decompressor outlet supply air line, is then connected with sonic nozzle; The pressure regulating cavity of every platform decompressor is connected with pressure regulation gas surge tank by decompressor pressure regulation gas supply air line, pressure regulation gas surge tank is arranged pressure regulation gas suction valve and pressure regulation gas outlet valve, pressure regulation gas suction valve is connected with pressure regulation gas tank by high pressure pressure regulation gas supply air line, the outlet of pressure regulation gas outlet valve is emptying, just can be realized the accurate control of decompressor pressure regulation pressure by the open and close controlling pressure regulation gas suction valve and pressure regulation gas outlet valve respectively.
Described sonic nozzle is for controlling gas supply flow, and its outlet is connected with heavy caliber pneumatic valve, and heavy caliber pneumatic valve is for controlling the open and close of air feed.
Described control module adopts PLC control mode, by being provided with pressure transducer and temperature transducer at sonic nozzle entrance, sonic nozzle outlet is provided with pressure transducer, pressure regulation gas surge tank is provided with pressure transducer, and dynamic monitoring pressure and temperature parameter is measured and regulable control gas supply flow and pressure in real time.
Further, described work gas tank adopts single layer structure or multi-layer structure; When source of the gas be air or nitrogen time, the material selection carbon steel contacted with gas medium or stainless steel, when source of the gas is oxygen, the material contacted with gas medium adopts stainless steel or high-temperature alloy material.
Further, described work gas tank work gas source pressure is from 15MPa to 35MPa.
Further, the number of units that described decompressor group comprises decompressor is determined according to total gas supply flow and separate unit decompressor flow, separate unit decompressor flow 10kg/s to 50kg/s.
Further, the pressure regulation gas medium of described pressure regulation gas tank adopts air or nitrogen, and pressure regulation bleed pressure is from 15MPa to 20MPa.
Further, described pressure regulation gas tank adopts single layer structure or multi-layer structure; When source of the gas be air or nitrogen time, the material selection carbon steel contacted with gas medium or stainless steel.
Further, the flow of described sonic nozzle is determined according to for gas medium, sonic nozzle inlet pressure, sonic nozzle outlet pressure and temperature.
Further, described sonic nozzle outlet pressure is lower than 90% of sonic nozzle inlet pressure.
The present invention is in parallel by many decompressors, and dynamic measurement decompressor rate of discharge carrys out the pressure of real-time regulable control pressure regulation gas surge tank, realize the flow tens of kilograms supply to hundreds of kilograms of gases per second per second, supply gas pressure and flow can accurate control and regulation in real time.
Accompanying drawing explanation
Fig. 1 is a kind of gas supply regulating device schematic diagram based on decompressor of the present invention.
In figure: 1-work gas tank, 2-decompressor entrance supply air line, 3-decompressor group, the outlet of 4-decompressor supply air line, 5-sonic nozzle, 6-heavy caliber pneumatic valve, 7-decompressor pressure regulation gas supply air line, 8-pressure regulation gas surge tank, 9-pressure regulation gas outlet valve, 10-pressure regulation gas suction valve, 11-high pressure pressure regulation gas supply air line, 12-pressure regulation gas tank, 13-control module.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is a kind of gas supply regulating device schematic diagram based on decompressor of the present invention.
The present invention adopts the overall technological scheme of " many decompressors group parallel connection+pressure regulation atmospheric pressure Dynamic controlling " to realize the flow tens of kilograms supply to hundreds of kilograms of gases per second per second, the fine adjustment of supply gas pressure and flow.
The preferred embodiments of the present invention provide a kind of gas supply regulating device based on decompressor, should comprise work gas tank 1, decompressor entrance supply air line 2, decompressor group 3, decompressor outlet supply air line 4, sonic nozzle 5, heavy caliber pneumatic valve 6, decompressor pressure regulation gas supply air line 7, pressure regulation gas surge tank 8, pressure regulation gas outlet valve 9, pressure regulation gas suction valve 10, high pressure pressure regulation gas supply air line 11, pressure regulation gas tank 12, control module 13 based on the gas supply regulating device of decompressor.
Wherein:
Work gas tank 1, for storing high-pressure air feed gas, can be high-pressure air, oxygen or nitrogen according to application needs, work bleed pressure 15MPa to 35MPa.Storage tank can adopt single layer structure, also can adopt multi-layer structure; When source of the gas be air or nitrogen time, the material contacted with gas medium can be carbon steel or stainless steel; When source of the gas is oxygen, the material contacted with gas medium can not adopt carbon steel, can only adopt stainless steel or high-temperature alloy material.Determine volume and the quantity of storage tank according to the flow of working gas supply and operating time, multiple stage work gas tank realizes pressure balance by pipeline connection.
Pressure regulation gas tank 12 is for providing decompressor pressure regulation source of the gas, and pressure regulation gas medium generally adopts air or nitrogen, pressure regulation bleed pressure 15MPa to 20MPa, and storage tank can adopt single layer structure, also can adopt multi-layer structure; When source of the gas be air or nitrogen time, the material contacted with gas medium can be carbon steel or stainless steel.Because pressure regulation gas consumption is little, single storage tank is adopted to meet the demands.
For large discharge gas for seasonable, the parallel connection of decompressor multiple stage is adopted to regulate in real time to realize with pressure regulation gas surge tank.Decompressor group 3 is formed in parallel by multiple stage air-regulation type decompressor, separate unit decompressor flow 10kg/s to 50kg/s, the number of units that decompressor group 3 comprises decompressor is determined according to total gas supply flow and separate unit decompressor flow, such as: if separate unit decompressor flow is 20kg/s, total gas supply flow is 300kg/s, then need 15 decompressor parallel connections; If separate unit decompressor flow is 50kg/s, total gas supply flow is 300kg/s, then need 6 decompressor parallel connections.Every platform decompressor entrance is connected with work gas tank 1 by decompressor entrance supply air line 2.Every platform decompressor outlet is communicated with by decompressor outlet supply air line 4, is then connected with sonic nozzle 5.The pressure regulating cavity of every platform decompressor is connected with pressure regulation gas surge tank 8 by decompressor pressure regulation gas supply air line 7, pressure regulation gas surge tank 8 is arranged pressure regulation gas suction valve 10 and pressure regulation gas outlet valve 9, pressure regulation gas suction valve 10 is connected with pressure regulation gas tank 12 by high pressure pressure regulation gas supply air line 11, pressure regulation gas outlet valve 9 exports emptying, just can be realized the accurate control of decompressor pressure regulation pressure by the open and close controlling pressure regulation gas suction valve 10 and pressure regulation gas outlet valve 9 respectively.
Sonic nozzle 5 is for controlling gas supply flow, and for given sonic nozzle, as long as determine for gas medium, sonic nozzle inlet pressure and temperature, sonic nozzle outlet pressure is lower than 90% of sonic nozzle inlet pressure, and the flow of sonic nozzle is just uniquely determined.Sonic nozzle 5 outlet is connected with heavy caliber pneumatic valve 6, and heavy caliber pneumatic valve 6 is for controlling the open and close of air feed.
Control module 13 adopts PLC control mode, by being provided with pressure transducer and temperature transducer at sonic nozzle 5 entrance, sonic nozzle 5 outlet is provided with pressure transducer, pressure regulation gas surge tank 8 is provided with pressure transducer, and control module 13 just can be measured and regulable control gas supply flow and pressure in real time by these pressure and temperature parameters of dynamic monitoring.
Above mode of execution is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technological schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (8)
1. based on a gas supply regulating device for decompressor, it is characterized in that: comprise work gas tank (1), decompressor entrance supply air line (2), decompressor group (3), decompressor outlet supply air line (4), sonic nozzle (5), heavy caliber pneumatic valve (6), decompressor pressure regulation gas supply air line (7), pressure regulation gas surge tank (8), pressure regulation gas outlet valve (9), pressure regulation gas suction valve (10), high pressure pressure regulation gas supply air line (11), pressure regulation gas tank (12) and control module (13);
Described work gas tank (1) is for storing high-pressure air feed gas, and determine volume and the quantity of storage tank according to the flow of working gas supply and operating time, multiple stage work gas tank (1) realizes pressure balance by pipeline connection;
Described pressure regulation gas tank (12) is for providing decompressor pressure regulation source of the gas;
Described decompressor group (3) is formed in parallel by multiple stage air-regulation type decompressor; Every platform decompressor entrance is connected with work gas tank (1) by decompressor entrance supply air line (2); Every platform decompressor outlet exports supply air line (4) by decompressor and is communicated with, and is then connected with sonic nozzle (5); The pressure regulating cavity of every platform decompressor is connected with pressure regulation gas surge tank (8) by decompressor pressure regulation gas supply air line (7), pressure regulation gas surge tank (8) is arranged pressure regulation gas suction valve (10) and pressure regulation gas outlet valve (9), pressure regulation gas suction valve (10) is connected with pressure regulation gas tank (12) by high pressure pressure regulation gas supply air line (11), pressure regulation gas outlet valve (9) exports emptying, just can be realized the accurate control of decompressor pressure regulation pressure by the open and close controlling pressure regulation gas suction valve (10) and pressure regulation gas outlet valve (9) respectively;
Described sonic nozzle (5) is for controlling gas supply flow, and its outlet is connected with heavy caliber pneumatic valve (6), and heavy caliber pneumatic valve (6) is for controlling the open and close of air feed;
Described control module (13) adopts PLC control mode, by being provided with pressure transducer and temperature transducer at sonic nozzle (5) entrance, sonic nozzle (5) outlet is provided with pressure transducer, pressure regulation gas surge tank (8) is provided with pressure transducer, and dynamic monitoring pressure and temperature parameter is measured and regulable control gas supply flow and pressure in real time.
2. a kind of gas supply regulating device based on decompressor as claimed in claim 1, is characterized in that: described work gas tank (1) adopts single layer structure or multi-layer structure; When source of the gas be air or nitrogen time, the material selection carbon steel contacted with gas medium or stainless steel, when source of the gas is oxygen, the material contacted with gas medium adopts stainless steel or high-temperature alloy material.
3. a kind of gas supply regulating device based on decompressor as claimed in claim 1 or 2, is characterized in that: described work gas tank (1) work bleed pressure is from 15MPa to 35MPa.
4. a kind of gas supply regulating device based on decompressor as claimed in claim 1, it is characterized in that: the number of units that described decompressor group (3) comprises decompressor is determined according to total gas supply flow and separate unit decompressor flow, separate unit decompressor flow 10kg/s to 50kg/s.
5. a kind of gas supply regulating device based on decompressor as claimed in claim 1, is characterized in that: the pressure regulation gas medium of described pressure regulation gas tank (12) adopts air or nitrogen, and pressure regulation bleed pressure is from 15MPa to 20MPa.
6. a kind of gas supply regulating device based on decompressor as described in claim 1 or 5, is characterized in that: described pressure regulation gas tank (12) adopts single layer structure or multi-layer structure; When source of the gas be air or nitrogen time, the material selection carbon steel contacted with gas medium or stainless steel.
7. a kind of gas supply regulating device based on decompressor as claimed in claim 1, is characterized in that: the flow of described sonic nozzle (5) is determined according to for gas medium, sonic nozzle inlet pressure, sonic nozzle outlet pressure and temperature.
8. the gas supply regulating device based on decompressor as described in claim 1 or 7, is characterized in that: described sonic nozzle outlet pressure is lower than 90% of sonic nozzle inlet pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510514363.1A CN105402454B (en) | 2015-08-21 | 2015-08-21 | Gas supply adjusting device based on pressure reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510514363.1A CN105402454B (en) | 2015-08-21 | 2015-08-21 | Gas supply adjusting device based on pressure reducer |
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| CN105402454A true CN105402454A (en) | 2016-03-16 |
| CN105402454B CN105402454B (en) | 2019-12-13 |
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| CN201510514363.1A Active CN105402454B (en) | 2015-08-21 | 2015-08-21 | Gas supply adjusting device based on pressure reducer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328671A (en) * | 2017-06-28 | 2017-11-07 | 北京航天动力研究所 | A kind of pilot system for being used to test the bellows fatigue life for bearing alternating pressure |
| CN108506279A (en) * | 2018-03-26 | 2018-09-07 | 华中科技大学 | A kind of high-pressure pneumatic servo valve mass flow characteristic detecting apparatus and method |
| CN110821710A (en) * | 2019-10-28 | 2020-02-21 | 西安航天动力试验技术研究所 | Rocket engine test inlet pressure rapid pressurizing device and liquid oxygen supply system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107328671A (en) * | 2017-06-28 | 2017-11-07 | 北京航天动力研究所 | A kind of pilot system for being used to test the bellows fatigue life for bearing alternating pressure |
| CN107328671B (en) * | 2017-06-28 | 2020-07-14 | 北京航天动力研究所 | Method for testing fatigue life of diaphragm capsule bearing alternating pressure |
| CN108506279A (en) * | 2018-03-26 | 2018-09-07 | 华中科技大学 | A kind of high-pressure pneumatic servo valve mass flow characteristic detecting apparatus and method |
| CN108506279B (en) * | 2018-03-26 | 2019-06-18 | 华中科技大学 | A kind of high-pressure pneumatic servo valve mass flow characteristic detecting apparatus and method |
| CN110821710A (en) * | 2019-10-28 | 2020-02-21 | 西安航天动力试验技术研究所 | Rocket engine test inlet pressure rapid pressurizing device and liquid oxygen supply system |
| CN110821710B (en) * | 2019-10-28 | 2020-08-21 | 西安航天动力试验技术研究所 | Rocket engine test inlet pressure rapid pressurizing device and liquid oxygen supply system |
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| CN105402454B (en) | 2019-12-13 |
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