CN105278570B - A kind of tank low temperature comprehensive performance test pressure precision control device and method - Google Patents
A kind of tank low temperature comprehensive performance test pressure precision control device and method Download PDFInfo
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- CN105278570B CN105278570B CN201410236381.3A CN201410236381A CN105278570B CN 105278570 B CN105278570 B CN 105278570B CN 201410236381 A CN201410236381 A CN 201410236381A CN 105278570 B CN105278570 B CN 105278570B
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Abstract
The present invention relates to tank cold performance test field, and in particular to a kind of tank low temperature comprehensive performance test pressure precision control device and method, it is therefore an objective to the problem of control accuracy is low when solving to use existing tank comprehensive performance test pressure precision control method.Characterized in that, the device includes air supply system, gas extraction system, TT＆C system and surge tank；Air supply system is connected with tank, and tank is connected with surge tank, and surge tank is connected with gas extraction system, and TT＆C system is connected with air supply system, tank, surge tank and gas extraction system respectively；This method includes tank supercharging and tank voltage stabilizing, the present invention can meet the specific needs of experiment tank cold performance test, eliminate in process of the test because cryogenic media evaporates the tank pressure caused rising, and because Low Temperature Steam condenses influence of the tank pressure caused the decline to pressure change in tank, it is ensured that the pressure stability of tank is tested in whole process of the test.
Description
Technical field
The present invention relates to tank cold performance test field, and in particular to a kind of tank low temperature comprehensive performance test pressure essence
Spend control device and method.
Background technology
Tank is the important component of rocket, and its major function is：Hold cryogenic propellant；Keep rocket body completely outer
Shape；Part before and after connection, makes rocket body have certain aerodynamic characteristic；Overall stress is participated in, and bears internal pressure effect；Can installation portion
Sub-control system, remote measurement and other elements.Its material of the design requirement of tank and structure type need to meet propellant and pressurization gas thing
Reason, chemical property requirement, its structure should have reliable adiabatic system.
According to above-mentioned requirements, tank is, it is necessary to carry out a series of ground experiments before formal come into operation, and simulation is truly used
Environment, with the reliability of design, the manufacture of verifying tank.
Low temperature comprehensive performance test is one kind in reliability test, and tank is in load bearing process under main examination low temperature environment
Experiment is parked in middle combination property, including low temperature structure slow test, filling.Low temperature structure slow test, is under cryogenic
Experimentally intensity, rigidity, stability and stress under dead weight of observation and research structure or component, deformation
Distribution situation.Experiment is not only the important means of checking structure type reasonability and static structural analysis correctness, while to build
Vertical new analysis model, structural property parameter is provided for engineering theory, be that developing products accumulate design data, improved structure and set
Count, reduction architecture quality contributes with improving product reliability etc., and can effectively solve many theory analysises and cann't be solved
Practical Project problem.The evaporation capacity that experiment is the component under the different operating modes of measurement is parked in filling, calculated with this component filling,
Add the heat-insulating property of consumption and test member.Therefore low temperature comprehensive performance test is each in space flight, aviation, military affairs and industry etc.
Individual field suffers from being widely applied.In such experiment, the high-precision control of tank pressure is the setting of test procedure, experiment
As a result acquisition, the analysis of result of the test and the reliability offer strong support of result of the test, are to determine such success of the test
Whether key.
Low temperature comprehensive performance test is in the case of filling cryogenic media (liquid nitrogen, liquid hydrogen etc.) in test products, to examination
Test product apply internal pressure, external pressure, axle pressure, moment of flexure, the curved interior connected load of axle etc., record test products are in low temperature environment, specific pressure
Strain, displacement under power；To test products fill cryogenic media and park a period of time, and most at last cryogenic media from product
Release, properties of the test tank under worst cold case, specified pressure.In order to realize the low temperature comprehensive performance test of tank,
Need to build a set of low temperature, high-precision supercharging and voltage stabilizing pilot system, to realize that the items to tank under worst cold case refer to
Mark is tested, examined.
In order to reach test objective, need to carry out high-precision control to the pressure of tank in process of the test, to greatest extent
Reduction its pressure oscillation.
Current tank comprehensive performance test pressure precision control method is to only rely on supercharging with the switch of drain tap to adjust
Section control, corresponding ullage space is small, and the pneumatic die cushion pressure oscillation that vaporization and the condensation of cryogenic media are caused is big, and control accuracy is not
Actual operation requirements can be met.
The content of the invention
Present invention aim to address using control accuracy during existing tank comprehensive performance test pressure precision control method
Low the problem of, can be effectively eliminated there is provided one kind during tank low temperature comprehensive performance test, due to the evaporation of cryogenic media
With a kind of tank low temperature comprehensive performance test of the change of the pressure in pressure oscillation caused by condensation, and then effective control tank
Pressure precision control device and method.
What the present invention was realized in：
A kind of tank low temperature comprehensive performance test pressure precision control device, including air supply system, gas extraction system, observing and controlling system
System and surge tank；Air supply system is connected with tank, and tank is connected with surge tank, and surge tank is connected with gas extraction system, TT＆C system
It is connected respectively with air supply system, tank, surge tank and gas extraction system；Air supply system, which is used to realize tank in process of the test, to be increased
Pressure and ftercompction；Gas extraction system is used to realize the pressure release to tank in process of the test；TT＆C system is used to set desired supercharging
Value and voltage stabilizing value, acquisition buffer pressure tank value are turned on and off air supply system and gas extraction system；Surge tank is used to balance voltage stabilizing,
Compensator or trimmer pressure is fluctuated.
The inlet end of surge tank as described above is connected to the exhaust end of tank by pressure pipeline.
Gas extraction system as described above includes the air bleeding valve and pressure pipeline composition of tri- kinds of specifications of DN100, DN25, DN15；
One end of three pressure pipelines is connected to the exhaust end of surge tank, the other end respectively with DN100 air bleeding valves, DN25 air bleeding valves
With the connection of DN15 air bleeding valves, the size of different exhaust valve regulation capacities is opened by adjusting.
Air supply system as described above includes distribution platform, air temperature type vaporizer, pneumatic stopping valve, hand stop valve and pressure
Pipeline；Between distribution platform and air temperature type vaporizer, between air temperature type vaporizer and pneumatic stopping valve and pneumatic stopping valve and hand
Connected between dynamic stop valve by pressure pipeline, hand stop valve is connected to tank by pressure pipeline and increases pressure port.
TT＆C system as described above include tank pressure sensor, tank temperature sensor, buffer tank pressure sensor,
Surge tank temperature sensor, boosted flow meter, exhaust flow-meter, console, dc source and cable；Dc source passes through cable
It is connected with console, console is sensed with tank pressure sensor, tank temperature sensor, buffer tank pressure respectively by cable
Device, surge tank temperature sensor, boosted flow meter and exhaust flow-meter connection；Tank pressure sensor and tank temperature sensor
On tank, buffer tank pressure sensor and surge tank temperature sensor are arranged on surge tank, and boosted flow meter is installed
On the pressure pipeline that tank increases on the outside of pressure port, exhaust flow-meter is arranged on the pressure pipeline on the outside of tank exhaust end；
Console is also connected with DN100 air bleeding valves, DN25 air bleeding valves, DN15 air bleeding valves and pneumatic stopping valve respectively by cable；Control
Platform receives tank pressure sensor, tank temperature sensor, buffer tank pressure sensor, surge tank temperature sensor, supercharging stream
Gauge and the numerical value of exhaust flow-meter measurement, and control DN100 air bleeding valves, DN25 air bleeding valves, DN15 air bleeding valves and pneumatic cut-off
The open and close of valve.
A kind of tank low temperature realized using tank low temperature comprehensive performance test pressure precision control device as described above
Comprehensive performance test pressure precision control method, comprises the following steps：
The first step：Tank is pressurized；
1.1 TT＆C systems set the pressure value P that tank reaches needed for after supercharging1；
1.2 TT＆C systems open air supply system, start to be pressurized to tank；
1.3 TT＆C systems detect the pressure value of surge tank, and the pressure value is designated as into P2；
1.4 TT＆C systems calculate P1-P2Value；Work as P1-P2During≤0.005MPa, TT＆C system closes air supply system, stops
It is pressurized to tank, jumps to step 1.5；Work as P1-P2During ＞ 0.005MPa, continue to be pressurized to tank, when tank pressure value reaches P1
When, TT＆C system closes air supply system, stops being pressurized to tank, and tank supercharging terminates；
1.5 TT＆C systems calculate P1-P2Value；Work as P1-P2During≤0.015MPa, tank supercharging terminates；Work as P1-P2＞
During 0.015MPa, TT＆C system opens air supply system, starts to be pressurized to tank, then branches to step 1.4；
Second step：Tank voltage stabilizing；
2.1 TT＆C systems set the pressure value P that tank reaches needed for after voltage stabilizing3；
2.2 TT＆C systems detect the pressure value of surge tank, and the pressure value is designated as into P4；
2.3 TT＆C system calculates P4-P3Value；Work as P4-P3During >=0.005MPa, TT＆C system control gas extraction system is opened,
Start pressure release, jump to step 2.4；Work as P4-P3During ＜ 0.005MPa, tank voltage stabilizing terminates；
2.4 TT＆C system calculates P4-P3Value；Work as P4-P3During >=0.01MPa, TT＆C system control gas extraction system is closed,
Stop pressure release, tank voltage stabilizing terminates；Work as P4-P3During ＜ 0.01MPa, TT＆C system control gas extraction system is opened, and starts pressure release, weight
It is new to perform step 2.4.
The beneficial effects of the invention are as follows：
The present invention can meet the specific needs of experiment tank cold performance test, eliminate in process of the test because low temperature is situated between
The tank pressure that matter evaporation is caused rises, and pressure in tank is become because Low Temperature Steam condenses the tank pressure caused decline
The influence of change, it is ensured that the pressure stability of tank is tested in whole process of the test.
Brief description of the drawings
Fig. 1 is a kind of structure principle chart of tank low temperature comprehensive performance test pressure precision control device of the present invention；
Fig. 2 is a kind of flow chart of tank low temperature comprehensive performance test pressure precision control method of the present invention.
Embodiment
A kind of tank low temperature comprehensive performance test pressure precision control with specific embodiment to the present invention below in conjunction with the accompanying drawings
Device and method processed is described in detail：
As shown in figure 1, a kind of tank low temperature comprehensive performance test pressure precision control device, including air supply system, exhaust
System, TT＆C system and surge tank.Air supply system is connected with tank, and tank is connected with surge tank, and surge tank connects with gas extraction system
Connect, TT＆C system is connected with air supply system, tank, surge tank and gas extraction system respectively.Air supply system is used in process of the test
Supercharging and ftercompction are realized to tank；Gas extraction system is used to realize the pressure release to tank in process of the test；TT＆C system is used to set
Fixed desired supercharging value and voltage stabilizing value, acquisition buffer pressure tank value are turned on and off air supply system and gas extraction system；Surge tank is used
In balance voltage stabilizing, compensator or trimmer pressure fluctuation.
The inlet end of surge tank is connected to the exhaust end of tank by pressure pipeline, and surge tank uses existing pressure vessel
Realize.
Gas extraction system includes the air bleeding valve and pressure pipeline composition of tri- kinds of specifications of DN100, DN25, DN15.Three pressure pipes
The one end in road is connected to the exhaust end of surge tank, and the other end is vented with DN100 air bleeding valves, DN25 air bleeding valves and DN15 respectively
Valve is connected, and the size of capacity can be adjusted by adjusting the different air bleeding valves of unlatching.
Air supply system and TT＆C system can use existing apparatus to realize, in the present embodiment：
Air supply system includes distribution platform, air temperature type vaporizer, pneumatic stopping valve, hand stop valve and pressure pipeline.Distribution
Between platform and air temperature type vaporizer, between air temperature type vaporizer and pneumatic stopping valve and pneumatic stopping valve and hand stop valve it
Between connected by pressure pipeline, hand stop valve by pressure pipeline be connected to tank increase pressure port.
TT＆C system includes tank pressure sensor, tank temperature sensor, buffer tank pressure sensor, surge tank temperature
Sensor, boosted flow meter, exhaust flow-meter, console, dc source and cable.Dc source is connected by cable and console
Connect, console by cable respectively with tank pressure sensor, tank temperature sensor, buffer tank pressure sensor, surge tank
Temperature sensor, boosted flow meter and exhaust flow-meter connection.Tank pressure sensor and tank temperature sensor are arranged on storage
On case, buffer tank pressure sensor and surge tank temperature sensor are arranged on surge tank, and boosted flow meter increases installed in tank
On pressure pipeline on the outside of pressure port, exhaust flow-meter is arranged on the pressure pipeline on the outside of tank exhaust end.Console is also
It is connected respectively with DN100 air bleeding valves, DN25 air bleeding valves, DN15 air bleeding valves and pneumatic stopping valve by cable.Console receives storage
Case pressure sensor, tank temperature sensor, buffer tank pressure sensor, surge tank temperature sensor, boosted flow meter and row
The numerical value of air-flow flowmeter measurement, and control the unlatching of DN100 air bleeding valves, DN25 air bleeding valves, DN15 air bleeding valves and pneumatic stopping valve
With closing.
A kind of tank low temperature using the realization of above-mentioned tank low temperature comprehensive performance test pressure precision control device is comprehensive
Energy test pressure accuracy control method, comprises the following steps：
The first step：Tank is pressurized；
1.1 TT＆C systems set the pressure value P that tank reaches needed for after supercharging1；
1.2 TT＆C systems open air supply system, start to be pressurized to tank；
1.3 TT＆C systems detect the pressure value of surge tank, and the pressure value is designated as into P2；
1.4 TT＆C systems calculate P1-P2Value；Work as P1-P2During≤0.005MPa, TT＆C system closes air supply system, stops
It is pressurized to tank, jumps to step 1.5；Work as P1-P2During ＞ 0.005MPa, continue to be pressurized to tank, when tank pressure value reaches P1
When, TT＆C system closes air supply system, stops being pressurized to tank, and tank supercharging terminates；
1.5 TT＆C systems calculate P1-P2Value；Work as P1-P2During≤0.015MPa, tank supercharging terminates；Work as P1-P2＞
During 0.015MPa, TT＆C system opens air supply system, starts to be pressurized to tank, then branches to step 1.4.
Second step：Tank voltage stabilizing；
2.1 TT＆C systems set the pressure value P that tank reaches needed for after voltage stabilizing3；
2.2 TT＆C systems detect the pressure value of surge tank, and the pressure value is designated as into P4；
2.3 TT＆C systems calculate P4-P3Value；Work as P4-P3During >=0.005MPa, TT＆C system control gas extraction system is opened,
Start pressure release, jump to step 2.4；Work as P4-P3During ＜ 0.005MPa, tank voltage stabilizing terminates；
2.4 TT＆C systems calculate P3-P4Value；Work as P3-P4During >=0.01MPa, TT＆C system control gas extraction system is closed,
Stop pressure release, tank voltage stabilizing terminates；Work as P3-P4During ＜ 0.01MPa, TT＆C system control gas extraction system is opened, and starts pressure release, weight
It is new to perform step 2.4.
The present invention can meet the specific needs of experiment tank cold performance test, eliminate in process of the test because low temperature is situated between
The tank pressure that matter evaporation is caused rises, and pressure in tank is become because Low Temperature Steam condenses the tank pressure caused decline
The influence of change, it is ensured that the pressure stability of tank is tested in whole process of the test.
Control strategy of the present invention is not limited to apply in tank low temperature comprehensive performance test, also other available for tank
The pressure stability control of tank is tested in type low-temperature test.In the knowledge that those of ordinary skill in the art possess,
Can also various changes can be made and expands on the premise of present inventive concept is not departed from, such as all kinds of low temperature examination in other fluids
Test and be not described in detail in middle control pressure precision, the present invention.
Claims (2)
1. a kind of tank low temperature comprehensive performance test pressure precision control device, it is characterised in that：It includes air supply system, exhaust
System, TT＆C system and surge tank；Air supply system is connected with tank, and tank is connected with surge tank, and surge tank connects with gas extraction system
Connect, TT＆C system is connected with air supply system, tank, surge tank and gas extraction system respectively；Air supply system is used in process of the test
Supercharging and ftercompction are realized to tank；Gas extraction system is used to realize the pressure release to tank in process of the test；TT＆C system is used to set
Fixed desired supercharging value and voltage stabilizing value, acquisition buffer pressure tank value are turned on and off air supply system and gas extraction system；Surge tank is used
In balance voltage stabilizing, compensator or trimmer pressure fluctuation；
The inlet end of described surge tank is connected to the exhaust end of tank by pressure pipeline；
Described gas extraction system includes the air bleeding valve and pressure pipeline composition of tri- kinds of specifications of DN100, DN25, DN15；Three pressure
One end of pipeline is connected to the exhaust end of surge tank, and the other end is arranged with DN100 air bleeding valves, DN25 air bleeding valves and DN15 respectively
Air valve is connected, and the size of different exhaust valve regulation capacities is opened by adjusting；
Described air supply system includes distribution platform, air temperature type vaporizer, pneumatic stopping valve, hand stop valve and pressure pipeline；Match somebody with somebody
Between gas platform and air temperature type vaporizer, between air temperature type vaporizer and pneumatic stopping valve and pneumatic stopping valve and hand stop valve
Between connected by pressure pipeline, hand stop valve by pressure pipeline be connected to tank increase pressure port；
Described TT＆C system includes tank pressure sensor, tank temperature sensor, buffer tank pressure sensor, surge tank temperature
Spend sensor, boosted flow meter, exhaust flow-meter, console, dc source and cable；Dc source passes through cable and console
Connection, console by cable respectively with tank pressure sensor, tank temperature sensor, buffer tank pressure sensor, buffering
Tank temperature sensor, boosted flow meter and exhaust flow-meter connection；Tank pressure sensor and tank temperature sensor are arranged on
On tank, buffer tank pressure sensor and surge tank temperature sensor are arranged on surge tank, and boosted flow meter is arranged on tank
Increase on the pressure pipeline on the outside of pressure port, exhaust flow-meter is arranged on the pressure pipeline on the outside of tank exhaust end；Console
Also it is connected respectively with DN100 air bleeding valves, DN25 air bleeding valves, DN15 air bleeding valves and pneumatic stopping valve by cable；Console is received
Tank pressure sensor, tank temperature sensor, buffer tank pressure sensor, surge tank temperature sensor, boosted flow meter and
The numerical value of exhaust flow-meter measurement, and control opening for DN100 air bleeding valves, DN25 air bleeding valves, DN15 air bleeding valves and pneumatic stopping valve
Open and close.
2. the tank that the tank low temperature comprehensive performance test pressure precision control device described in a kind of usage right requirement 1 is realized is low
Warm comprehensive performance test pressure precision control method, comprises the following steps：
The first step：Tank is pressurized；
1.1 TT＆C systems set the pressure value P that tank reaches needed for after supercharging1；
1.2 TT＆C systems open air supply system, start to be pressurized to tank；
1.3 TT＆C systems detect the pressure value of surge tank, and the pressure value is designated as into P2；
1.4 TT＆C systems calculate P1-P2Value；Work as P1-P2During≤0.005MPa, TT＆C system closes air supply system, stops to storage
Case is pressurized, and jumps to step 1.5；Work as P1-P2During ＞ 0.005MPa, continue to be pressurized to tank, when tank pressure value reaches P1When,
TT＆C system closes air supply system, stops being pressurized to tank, and tank supercharging terminates；
1.5 TT＆C systems calculate P1-P2Value；Work as P1-P2During≤0.015MPa, tank supercharging terminates；Work as P1-P2＞ 0.015MPa
When, TT＆C system opens air supply system, starts to be pressurized to tank, then branches to step 1.4；
Second step：Tank voltage stabilizing；
2.1 TT＆C systems set the pressure value P that tank reaches needed for after voltage stabilizing3；
2.2 TT＆C systems detect the pressure value of surge tank, and the pressure value is designated as into P4；
2.3 TT＆C systems calculate P4-P3Value；Work as P4-P3During >=0.005MPa, TT＆C system control gas extraction system is opened, and is started
Pressure release, jumps to step 2.4；Work as P4-P3During ＜ 0.005MPa, tank voltage stabilizing terminates；
2.4 TT＆C systems calculate P4-P3Value；Work as P4-P3During >=0.01MPa, TT＆C system control gas extraction system is closed, and stops letting out
Pressure, tank voltage stabilizing terminates；Work as P4-P3During ＜ 0.01MPa, TT＆C system control gas extraction system is opened, and is started pressure release, is re-executed
Step 2.4.
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| CN107871046B (en) * | 2017-11-20 | 2021-07-13 | 北京宇航***工程研究所 | Simulation method for spray blending in low-temperature propellant storage tank |
| CN107861548A (en) * | 2017-12-08 | 2018-03-30 | 北京强度环境研究所 | A kind of control system for low-oxygen environment experiment |
| CN109032199B (en) * | 2018-06-26 | 2021-12-21 | 常州大学 | Pressure control system and pressure control method of low-pressure phase balance experimental device |
| CN110716590B (en) * | 2019-10-18 | 2022-12-13 | 中国运载火箭技术研究院 | Liquid hydrogen storage tank pressure control system based on cryopump signal feedback |
| CN111207010B (en) * | 2020-01-19 | 2022-12-06 | 上海交通大学 | Ground test device and test method for directly pressurizing cold helium in liquid oxygen temperature zone |
| CN112916642B (en) * | 2021-02-03 | 2022-03-04 | 大连理工大学 | Ultra-low temperature medium pressure accurate control device and control method |
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| KR100436501B1 (en) * | 2001-08-27 | 2004-06-22 | 현대모비스 주식회사 | testing device of injecter for liquid fuel rocket |
| CN101566527B (en) * | 2009-04-03 | 2011-04-27 | 清华大学 | Hydraulic control unit performance test station for stability control system in vehicle dynamics |
| KR101131948B1 (en) * | 2009-11-23 | 2012-03-29 | 김용성 | method and apparatus for airtight inspection using equalization |
| CN203224789U (en) * | 2013-03-29 | 2013-10-02 | 西安航天动力试验技术研究所 | A pressurization system controlling the pressure of propellant storage tanks |
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