CN113833584A - System and method for detecting performance of liquid rocket engine - Google Patents
System and method for detecting performance of liquid rocket engine Download PDFInfo
- Publication number
- CN113833584A CN113833584A CN202110738694.9A CN202110738694A CN113833584A CN 113833584 A CN113833584 A CN 113833584A CN 202110738694 A CN202110738694 A CN 202110738694A CN 113833584 A CN113833584 A CN 113833584A
- Authority
- CN
- China
- Prior art keywords
- valve
- pipeline
- subsystem
- medium
- inlet
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/56—Control
- F02K9/566—Control elements and safety devices, e.g. pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/56—Control
- F02K9/58—Propellant feed valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
Abstract
The invention relates to a liquid rocket engine performance detection system and method, wherein the inlet of a tested valve in the system is connected with a medium supply subsystem and a blowing and replacing subsystem through one part of branches of a medium pipeline subsystem, and the outlet of the tested valve is connected with a leakage detection subsystem through the other part of branches of the medium pipeline subsystem; the control port of the tested valve is connected with the product control subsystem; the medium supply subsystem supplies the supplied medium meeting the test pressure requirement to the tested valve through the medium pipeline subsystem; the product control subsystem is used for providing required control gas for the pneumatic actuating mechanism of the tested valve; the leakage detection subsystem is used for detecting a medium leaked by the tested valve; the blowing and replacing subsystem is used for introducing blowing gas required by the test into the medium pipeline subsystem and replacing air in the medium pipeline subsystem and the tested valve; the medium pipeline subsystem is also used for recovering the medium at the inlet and the outlet of the tested valve.
Description
Technical Field
The invention relates to a system and a method for detecting the performance of a valve of a liquid rocket engine, and belongs to the technical field of low temperature.
Background
With the rapid development of the fields of aerospace, petrochemical industry and the like, the application of the low-temperature valve is wider and wider, and the market demand of the low-temperature valve is increased year by year. However, the existing low-temperature valve test system can only test the action and sealing performance of the product by a liquid nitrogen soaking method, so that the real working condition of the valve is not checked sufficiently, and particularly, the test coverage of the key valve in aerospace, LNG and other systems is not complete. The test accuracy and the test efficiency of the existing test system can not meet the current requirements of a large number of tests.
Disclosure of Invention
The technical problem solved by the invention is as follows: the system and the method for detecting the performance of the valve of the liquid rocket engine are applied to valve tests under different pressures, and provide accurate test data for function verification, performance detection and improved design of the valve.
The technical scheme of the invention is as follows: the invention provides a liquid rocket engine leakproofness leakage amount detection system, which comprises a medium supply subsystem, a medium pipeline subsystem, a product control subsystem, a blowing and replacing subsystem, a leakage detection subsystem and a measurement and control subsystem, wherein the medium supply subsystem is used for supplying a medium to a liquid rocket engine;
the inlet of the tested valve is connected with the medium supply subsystem and the blowing and replacing subsystem through one part of branches of the medium pipeline subsystem, and the outlet of the tested valve is connected with the leakage detecting subsystem through the other part of branches of the medium pipeline subsystem; the control port of the tested valve is connected with the product control subsystem;
the medium supply subsystem supplies the supplied medium meeting the test pressure requirement to the tested valve through the medium pipeline subsystem;
the product control subsystem is used for providing required control gas for the pneumatic actuating mechanism of the tested valve;
the leakage detection subsystem is used for detecting a medium leaked by the tested valve;
the blowing and replacing subsystem is used for introducing blowing gas required by the test into the medium pipeline subsystem and replacing air in the medium pipeline subsystem and the tested valve;
the medium pipeline subsystem is used for providing a passage connected to the tested valve for the medium supply subsystem, the product control subsystem, the blowing and replacing subsystem and the leakage detection subsystem and also used for recycling media at an inlet and an outlet of the tested valve;
the measurement and control subsystem is connected with the medium supply subsystem, the medium pipeline subsystem, the product control subsystem, the blowing and replacing subsystem and the leakage detection subsystem and is used for obtaining measurement parameters of the subsystems and controlling the pipeline switches of the subsystems.
Preferably, the medium supply subsystem comprises a working container, a filling pipeline, a medium supply pipeline, a pressurized gas source pipeline and a pneumatic valve control pipeline;
a working container for temporarily storing a medium used in the test;
the filling pipeline is connected with the working container and is used for filling the medium into the working container;
the pressurization gas source pipeline is used for introducing gas required by the test into the working container so as to obtain medium pressure meeting the test requirement;
and the medium supply pipeline connects the working container with the inlet of the valve to be tested through a part of branches of the medium pipeline subsystem.
Preferably, the working container is externally covered with a heat insulating material, and the filling pipeline is a vacuum heat insulating pipe.
Preferably, a manual exhaust valve is connected to the working container;
the manual exhaust valve is used for accelerating the discharge of the medium vaporized gas.
Preferably, the medium pipeline subsystem comprises an inlet pipeline, a front exhaust valve, an outlet pipeline and a recovery container;
one end of the inlet pipeline is connected with the medium supply system and used for conveying the medium supplied by the medium supply subsystem to the inlet of the tested valve; the filter, the low-temperature flowmeter and the low-temperature inlet pressure sensor are arranged on the inlet pipeline, and the filter is arranged close to the inlet of the tested valve and used for preventing the excess possibly existing in the medium pipeline subsystem from entering the tested valve; the low-temperature flowmeter is used for measuring the medium flow entering the tested valve; the inlet pressure sensor is used for monitoring the inlet pressure of the tested valve in real time;
the front exhaust pipeline is connected with the inlet pipeline close to the inlet of the tested valve and is connected with the recovery container for recovering the medium in the inlet pipeline; a front exhaust stop valve is arranged between the front exhaust pipeline and the recovery container and used for controlling the on-off of a medium in the front exhaust pipeline;
one end of the outlet pipeline is connected with an outlet of the tested valve, the other end of the outlet pipeline is divided into two paths, one path is connected with the recovery container, the other path is connected with the leakage detection subsystem, and an outlet pressure sensor is arranged at the position, close to the outlet of the tested valve, of the outlet pipeline and used for obtaining the outlet pressure of the tested valve; an outlet stop valve is arranged between the outlet pipeline and the recovery container and used for controlling the outlet flow of the tested valve.
Preferably, the product control subsystem comprises a product control path inlet pipeline, a product control path pressure reducing valve, a product control path outlet pipeline and a second gas collecting pipeline;
one end of the product control path inlet pipeline is connected with a helium source, the other end of the product control path inlet pipeline is connected with the product control path outlet pipeline through a product control path pressure reducing valve, the product control path pressure reducing valve reduces the pressure of the control gas to the control gas pressure required by the test, and the product control path outlet pipeline is connected with a second gas collecting pipeline;
the second gas collecting pipeline comprises a first product control pipeline, a second product control pipeline and a third product control pipeline;
the first product control pipeline comprises a first two-position five-way electromagnetic valve, a second two-position five-way electromagnetic valve, a first filter, a second filter, a first control path pressure sensor and a second control path pressure sensor;
the input end of the first two-position five-way electromagnetic valve is used for connecting the output end of the product control circuit outlet pipeline, and the two output ends of the first two-position five-way electromagnetic valve are respectively used for connecting a tested valve control cavity interface through a first filter and a second filter;
the second product control pipeline and the third product control pipeline have the same structure and comprise a two-position three-way electromagnetic valve and a third filter, the two-position three-way electromagnetic valve is used for being connected with the output end of the product control pipeline outlet pipeline, and the output end of the two-position three-way electromagnetic valve is used for being connected with the control cavity of the valve to be tested through the third filter;
when the valve control cavity to be tested only has one interface, connecting the second product control pipeline or the third product control pipeline to the interface of the valve control cavity to be tested;
when the valve control cavity to be tested comprises two interfaces, and only one of the two interfaces is ventilated, the first product control pipeline is connected to the two interfaces of the valve control cavity to be tested;
when the two connectors are simultaneously ventilated or exhausted, the second product control pipeline and the third product control pipeline are simultaneously connected to the tested valve control cavity connector;
when the valve control cavity to be tested comprises three interfaces, wherein the first interface is continuously ventilated or exhausted, and only one of the two outer second interfaces and the third interface is ventilated, the first product control pipeline is connected with the second interface and the third interface, and the second product control pipeline or the third control pipeline is connected with the first interface.
Preferably, the leak detection subsystem comprises a leak detection pipeline, a leak detection stop valve, a vaporizer and a leak detection testing device;
and when the pressure reaches the pressure, the leakage detection stop valve on the leakage detection pipeline is opened, the outlet passage of the detected valve is closed, and the leakage medium enters the leakage detection test device through the vaporizer, so that the leakage amount of the detected valve is obtained.
The invention provides another technical scheme that: a method for detecting the leak rate of the sealing performance of a liquid rocket engine comprises the following steps:
s1, system purging: before the tested valve is connected, purging pipelines through which all media possibly flow in front of the tested valve, and removing redundant substances in the pipelines;
s2, filling media: transferring and injecting the test medium in the storage tank into a medium supply subsystem to provide the test medium meeting the test requirements for the subsequent test;
s3, connecting the tested valve: connecting the inlet, the outlet and the control cavity interface of the tested valve with the corresponding interfaces of the test system, ensuring that a test medium can be introduced into the tested valve and control gas can enter the product control cavity;
s4, blowing and replacing: introducing helium gas with a certain pressure into an inlet of the tested valve, blowing off excess possibly existing in the tested valve, and replacing air in the medium pipeline subsystem and the tested valve to prevent air from being precooled and frozen to enter the tested valve to damage the tested valve when a medium flows through the air displacement pipeline subsystem and the air displacement pipeline subsystem;
s5, system precooling: opening the tested valve, and opening an inlet valve and an outlet valve of the testing system to enable a testing medium to flow through the tested valve, precooling the tested valve from the inside and reaching the temperature required by the test;
s6, sealing test: closing the tested valve, introducing different pressures required by the test from the inlet of the tested valve, and checking the leakage amount of the tested valve from the outlet of the tested valve;
s7, action test: introducing medium pressure meeting the test requirement to an inlet of the tested valve, opening an outlet of the test system, opening or closing the tested valve, wherein the opening and closing are once actions, and the actions are carried out until the action times meeting the test requirement are reached;
s8, finishing the test: and after the test content is finished, cutting off the test medium at the inlet of the tested valve, removing the pressure of the control cavity of the tested valve, discharging the inlet pressure of the tested valve from the front exhaust pipeline, and separating the tested valve from the test system.
In step S2, in order to increase the filling speed when filling the medium, the automatic exhaust valve and the manual exhaust valve are opened simultaneously to increase the discharge of the vaporized medium gas and increase the filling speed, and at the same time, whether the medium is filled up can be judged by the airflow sound at the outlet of the manual exhaust valve.
The medium pipeline subsystem comprises an inlet pipeline, a front exhaust valve, an outlet pipeline and a recovery container;
one end of the inlet pipeline is connected with the medium supply system and used for conveying the medium supplied by the medium supply subsystem to the inlet of the tested valve; the filter, the low-temperature flowmeter and the low-temperature inlet pressure sensor are arranged on the inlet pipeline, and the filter is arranged close to the inlet of the tested valve and used for preventing the excess possibly existing in the medium pipeline subsystem from entering the tested valve; the low-temperature flowmeter is used for measuring the medium flow entering the tested valve; the inlet pressure sensor is used for monitoring the inlet pressure of the tested valve in real time;
the front exhaust pipeline is connected with the inlet pipeline close to the inlet of the tested valve and is connected with the recovery container for recovering the medium in the inlet pipeline; a front exhaust stop valve is arranged between the front exhaust pipeline and the recovery container and used for controlling the on-off of a medium in the front exhaust pipeline;
one end of the outlet pipeline is connected with an outlet of the tested valve, the other end of the outlet pipeline is divided into two paths, one path is connected with the recovery container, the other path is connected with the leakage detection subsystem, and an outlet pressure sensor is arranged at the position, close to the outlet of the tested valve, of the outlet pipeline and used for obtaining the outlet pressure of the tested valve; an outlet stop valve is arranged between the outlet pipeline and the recovery container and used for controlling the outlet flow of the tested valve;
when the system is precooled, for a tested valve with a smaller passage than the inlet pipeline, the front exhaust pipeline is opened to accelerate the flow of the medium so as to shorten the precooling time.
During a sealing test, for the test requirement that the test pressure is smaller than the vaporization pressure of the working container, the front exhaust pipeline is opened, and the pressure reduction speed of the inlet pipeline is accelerated.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can be applied to valve tests under different pressures and provides accurate test data for function verification, performance detection and improved design of the valve.
(2) The design of the front exhaust pipeline can shorten the precooling time of a test system, and meanwhile, lower test pressure can be obtained in the test process so as to obtain a wider test pressure range.
(3) The invention is not only limited to low-temperature valve test, but also can carry out normal-temperature gas valve test, normal-temperature liquid valve test and small-flow valve test, thereby greatly reducing the construction cost of the test system;
(4) during a sealing test, in order to prevent a liquid medium from entering a leakage detecting device to cause damage of the leakage detecting device, a vaporizer is arranged in front of the leakage detecting medium to enable the liquid medium to enter the leakage detecting device after being gasified;
(5) the invention has reasonable process layout and simple system, and can obviously improve the safety of the system because testers are separated from the test system.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a block diagram of an overall structure of a valve testing system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a connection relationship between a medium supply subsystem, a medium pipeline subsystem, a product control subsystem, a blow-off displacement subsystem, and a leak detection subsystem in a valve test system according to an embodiment of the present invention.
Description of reference numerals:
1. media supply subsystem
11. A working container;
111. a pneumatic booster valve; 112. a low temperature safety valve; 113. a vessel pressure sensor; 114. a pneumatic exhaust valve; 115. a manual exhaust valve;
12. a filling pipeline;
121. a filling valve;
13. a medium supply line;
131. a manual media inlet valve; 132. a pneumatic media inlet valve;
14. a pressurized gas source pipeline;
141. increasing the inlet pipeline of the road roller;
1411. increasing a road roller inlet pipeline filter; 1412. increasing the stop valve of the pipeline at the entrance of the road; 1413. increasing a pressure gauge of a pipeline at the inlet of the road roller; 1414. increasing an exhaust valve of the road roller inlet pipeline;
142. a pressure-increasing circuit pressure-reducing valve;
143. increasing the pipeline of the road outlet;
1431. increasing a pressure gauge of a pipeline at the outlet of the road roller; 1432. increasing the stop valve of the pipeline at the outlet of the road roller; 1433. increasing an exhaust valve of a pipeline at the outlet of the road roller;
15. a pneumatic valve controls a pipeline;
151. an inlet pipeline of a pneumatic valve control circuit;
1511. a pneumatic valve control circuit inlet pipeline filter; 1512. a pneumatic valve control circuit inlet pipeline stop valve; 1513. a pneumatic valve control circuit inlet pipeline pressure gauge; 1514. an exhaust valve of the inlet pipeline of the pneumatic valve control circuit;
152. a pneumatic valve control circuit pressure reducing valve;
153. an outlet pipeline of the pneumatic valve control circuit;
1531. a pneumatic valve control circuit outlet pipeline pressure gauge; 1532. an outlet pipeline stop valve of the pneumatic valve control circuit; 1533. an exhaust valve of an outlet pipeline of the pneumatic valve control circuit; 1534. a pneumatic valve control circuit buffers a gas cylinder;
154. a first gas collection line;
1541. a pneumatic booster valve control path electromagnetic valve; 1542. a control circuit electromagnetic valve of the pneumatic exhaust valve; 1543. a pneumatic medium inlet valve control circuit electromagnetic valve;
2. medium pipeline subsystem
21. An inlet line;
211. a filter; 212. a low temperature flow meter; 213. an inlet pressure sensor;
22. a front exhaust line;
221 a front exhaust stop valve;
23. an outlet line;
231. an outlet pressure sensor; 232. an outlet shutoff valve; 233. a recovery vessel; 234. a recovery tank relief valve; 235. a drain valve of the recovery container; 236. a recovery vessel vent valve;
3. product control subsystem
31. A product control circuit inlet pipeline;
311. a product control circuit inlet line filter; 312. a product control path inlet pipeline stop valve; 313. a product control path inlet pipeline pressure gauge; 314. an exhaust valve of the inlet pipeline of the product control path;
32. a product control path pressure reducing valve;
33. an outlet pipeline of the product control circuit;
331. a product control path outlet pipeline pressure gauge; 332. a product control path outlet pipeline stop valve; 333. an exhaust valve of the outlet pipeline of the product control circuit; 334. an outlet pipeline of the product control circuit buffers a gas cylinder;
34. a second gas collection pipeline;
341-1, a first two-position five-way electromagnetic valve; 341-2, a second two-position five-way electromagnetic valve; 342-1, a first filter; 342-2 a second filter; 343-1, a first control path pressure sensor; 343-2 second control path pressure sensor; 344. a product control conduit; 341-2, two-position three-way electromagnetic valve; 342-3, a third filter;
4. blowing-off displacement subsystem
41. Blowing off an inlet pipeline of the replacement path;
411. blowing off a replacement path inlet pipeline filter; 412. blowing off a replacement path inlet pipeline stop valve; 413. blowing off a pressure gauge of the inlet pipeline of the replacement pipeline; 414. blowing an exhaust valve of the replacement path inlet pipeline;
42. blowing off a pressure reducing valve of the replacement path;
43. blowing off an outlet pipeline of the replacement path;
431. blowing off a pressure gauge of an outlet pipeline of the replacement pipeline; 432. blowing off a replacement path outlet pipeline stop valve; 433. blowing an exhaust valve of an outlet pipeline of the replacement pipeline; 434. blowing off a replacement path outlet pipeline filter; 435. a filler neck;
5. leak detection subsystem
51. A pipeline for detecting leakage; 52. a leak detection stop valve; 53. a vaporizer; 54. a leak detection test device;
6. measurement and control subsystem
Detailed Description
The invention is further illustrated by the following examples.
For the purpose of promoting a clear understanding of the objects, aspects and advantages of the embodiments of the invention, reference will now be made to the drawings and detailed description, wherein there are shown in the drawings and described in detail, various modifications of the embodiments described herein, and other embodiments of the invention will be apparent to those skilled in the art.
The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.
As used herein, the terms "first," "second," …, etc., do not denote any order or sequence, nor are they used to limit the present invention, but rather are used to distinguish one element from another or from another element or operation described in the same technical language.
With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
As used herein, "and/or" includes any and all combinations of the described items.
References to "plurality" herein include "two" and "more than two"; reference to "multiple sets" herein includes "two sets" and "more than two sets".
As used herein, the terms "substantially", "about" and the like are used to modify any slight variation in quantity or error that does not alter the nature of the variation. In general, the range of slight variations or errors that such terms modify may be 20% in some embodiments, 10% in some embodiments, 5% in some embodiments, or other values. It should be understood by those skilled in the art that the aforementioned values can be adjusted according to actual needs, and are not limited thereto.
Certain terms used to describe the invention are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the invention.
Example (b):
fig. 1 is a block diagram of an overall structure of an integrated testing system for a valve and a dynamic seal according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a testing system for a valve, which includes a medium supply subsystem 1, a medium pipeline subsystem 2, a product control subsystem 3, a blow-off and displacement subsystem 4, a leak detection subsystem 5, and a measurement and control subsystem 6.
The medium supplying subsystem 1 is connected with the tested valve through the medium pipeline subsystem 2, and the medium pipeline subsystem 2 which meets the test requirement and is provided by the medium supplying subsystem 1 is supplied to the tested valve; the medium pipeline subsystem 2 recovers the medium at the outlet and the inlet of the tested valve; the product control subsystem 3 is connected with the tested valve and used for providing required multi-path control gas for a pneumatic actuating mechanism of the tested valve; the blowing and replacing subsystem 4 is connected with the medium pipeline subsystem 2 and is introduced in front of the low-temperature filter 211; and the blowing and replacing subsystem 4 is used for introducing blowing gas required by the test into the medium pipeline subsystem 2, and replacing air in the medium pipeline subsystem 2 and the tested valve, and blowing off surplus matters such as dust and the like. The leakage detection subsystem 5 is connected with the medium pipeline subsystem 2 and is led out after a low-temperature outlet pressure sensor 231 of the tested valve. The medium leakage detection device is used for detecting the medium leaked from the tested valve; the measurement and control subsystem 6 is connected with the medium supply subsystem 1, the medium pipeline subsystem 2, the product control subsystem 3 and the leakage detection subsystem 5, and is used for controlling the opening and closing of control valves in the subsystems and simultaneously obtaining measurement parameters such as pressure, flow and leakage in the subsystems.
Further, the medium supply subsystem comprises a working container, a filling pipeline, a pressurization gas source pipeline, a medium supply pipeline and a pneumatic valve control pipeline;
the working container is used for temporarily storing low-temperature media used in a test, and a pneumatic pressure increasing valve, a low-temperature safety valve, a low-temperature container pressure sensor, a pneumatic exhaust valve and a manual exhaust valve are arranged on the working container; and the filling pipeline is provided with a filling valve for opening or closing the filling pipeline.
The filling pipeline is connected with the working container and is used for injecting low-temperature medium into the working container, and the filling pipeline is provided with a filling valve and is used for controlling the on-off of the injection of the low-temperature medium.
The medium supply pipeline connects the working container with the inlet pipeline, and the manual medium inlet valve and the pneumatic medium inlet valve are arranged on the medium supply pipeline and used for controlling the on-off of the flowing of the low-temperature medium.
Furthermore, the inlet pipeline of the booster circuit is connected with an air source and enters the inlet pipeline of the booster circuit through the filter of the inlet pipeline of the booster circuit, the stop valve of the inlet pipeline of the booster circuit and the pressure gauge of the inlet pipeline of the booster circuit; the pressure of the inlet pipeline of the pressurizing way is obtained through the pressure gauge of the inlet pipeline of the pressurizing way; the pressure boost inlet pipeline exhaust valve is used for discharging the pressure of the pressure boost inlet pipeline; the pressure increasing circuit pressure reducing valve reduces the pressure of the gas to the medium pressure required by the test; the pressure of the outlet pipeline of the pressurizing path is obtained through the pressure gauge of the outlet pipeline of the pressurizing path; the pressurization path outlet pipeline stop valve is used for controlling the pressurization air source pipeline to be opened or closed; the pressure boost path outlet pipeline exhaust valve is used for discharging the pressure of the pressure boost path outlet pipeline.
The pneumatic valve control pipeline is used for providing control air required by the test for the pneumatic booster valve, the pneumatic exhaust valve and the pneumatic medium inlet valve.
Furthermore, the pneumatic valve control pipeline is connected with a control air source, enters the pneumatic valve control pipeline inlet pipeline through the pneumatic valve control pipeline inlet pipeline filter and the pneumatic valve control pipeline inlet pipeline stop valve, and the pressure of the pneumatic valve control pipeline inlet pipeline is obtained through the pneumatic valve control pipeline inlet pipeline pressure gauge; the air exhaust valve of the inlet pipeline of the pneumatic valve control circuit is used for exhausting the pressure of the inlet pipeline of the pneumatic valve control circuit; the pneumatic valve control circuit pressure reducing valve reduces the pressure of control gas to the control pressure required by the pneumatic booster valve, the pneumatic exhaust valve and the pneumatic medium inlet valve, and the pressure of the pneumatic valve control circuit outlet pipeline is obtained through the pneumatic valve control circuit outlet pipeline pressure gauge; the pneumatic valve control circuit outlet pipeline stop valve is used for controlling the pneumatic valve control circuit to open or close; the outlet pipeline exhaust valve of the pneumatic valve control circuit is used for exhausting the pressure of the outlet pipeline of the pneumatic valve control circuit; and the pneumatic valve control circuit buffer gas cylinder is used for stabilizing the pressure of the outlet pipeline of the pneumatic valve control circuit. The first gas collecting pipeline is used for conveying the decompressed control gas to the inlets of the pneumatic booster valve control circuit electromagnetic valve, the pneumatic exhaust valve control circuit electromagnetic valve and the pneumatic medium inlet valve control circuit electromagnetic valve; the on-off of the pneumatic booster valve control path electromagnetic valve, the pneumatic exhaust valve control path electromagnetic valve and the pneumatic medium inlet valve control path electromagnetic valve are used for controlling the on-off action of the pneumatic booster valve, the pneumatic exhaust valve and the pneumatic medium inlet valve.
The blowing and replacing subsystem comprises a blowing and replacing path inlet pipeline, a blowing and replacing path pressure reducing valve and a blowing and replacing path outlet pipeline. The blowing replacement path inlet pipeline is connected with a helium source and enters the inlet of the blowing replacement path pressure reducing valve through the blowing replacement path inlet pipeline filter, the blowing replacement path inlet pipeline stop valve and the blowing replacement path inlet pipeline pressure gauge; the pressure of the inlet pipeline of the blowing replacement pipeline is obtained through the pressure gauge of the inlet pipeline of the blowing replacement pipeline; the exhaust valve of the blowing and replacing pipeline inlet is used for discharging the pressure of the blowing and replacing pipeline inlet; the pressure reducing valve of the blowing and replacing path reduces the pressure of helium to the blowing and replacing pressure required by the test; the pressure of the outlet pipeline of the blowing replacement pipeline is obtained through the pressure gauge of the outlet pipeline of the blowing replacement pipeline; the blowing replacement path outlet pipeline stop valve is used for controlling the opening or closing of the blowing replacement path outlet pipeline; the exhaust valve of the blowing and replacing pipeline outlet is used for discharging the pressure of the blowing and replacing pipeline outlet. The blowing and replacing filter is used for preventing surplus matters such as dust and the like in the blowing and replacing subsystem from entering the medium pipeline subsystem.
The leakage detection subsystem comprises the leakage detection pipeline, a leakage detection stop valve, a vaporizer and a leakage detection test device.
The leakage detection pipeline is led out from the back of the outlet pressure sensor and enters the leakage detection device through the leakage detection stop valve and the vaporizer. The leak detection stop valve is used for controlling the on-off of a leak detection pipeline; the vaporizer is used for vaporizing the medium leaked by the tested valve into gas; the leak detection device is used for measuring the flow of the gasified gas so as to obtain the leakage amount of the tested valve.
In the examples of the present invention, the low temperature may be about-190 ℃, but the application of the test system of the present invention is not limited to this temperature range.
Fig. 2 is a schematic diagram of a connection relationship between a medium supply subsystem, a medium pipeline subsystem, a product control subsystem, a blow-off displacement subsystem, and a leak detection subsystem in a valve test system according to an embodiment of the present invention.
Step 1, system purging:
when the tested valve is not connected, all the valves are closed, the stop valve 1512 of the inlet pipeline of the pneumatic valve control circuit is opened, so that air enters the inlet of the pressure reducing valve 152 of the pneumatic valve control circuit through the inlet pipeline filter 1511 of the pneumatic valve control circuit, and the pressure of the inlet pipeline is obtained through the pressure gauge 1513 of the inlet pipeline of the pneumatic valve control circuit; opening the stop valve 1532 of the outlet line of the pneumatic valve control line to allow the compressed air to pass through the buffer cylinder 1534 of the pneumatic valve control line and reach the inlets of the solenoid valves in the first gas collecting line 154; the opening size of the pressure reducing valve 152 of the pneumatic valve control circuit is adjusted, and the pressure of the outlet pipeline pressure gauge 1531 of the pneumatic valve control circuit is observed to reach the pressure required by the opening of the pneumatic pressure increasing valve 111, the pneumatic exhaust valve 114 and the pneumatic medium inlet valve 132.
In particular, during the whole test, the pressure in the air-operated valve control path outlet line 153 is kept constant by opening the air-operated valve control path inlet line stop valve 1512 and the air-operated valve control path outlet line stop valve 1532 and keeping the opening degree of the air-operated valve control path pressure reducing valve 152.
The manual medium inlet valve 131 is opened, the pressurization path inlet pipeline stop valve 1412 is opened, so that the extrusion gas enters the inlet of the pressurization path pressure reducing valve 142 through a pressurization path inlet pipeline filter 1411, and the pressure of the extrusion gas is obtained by a pressurization path inlet pipeline pressure gauge 1413; the pressurization line outlet line shut-off valve 1432 is opened to allow the pressurized gas to reach the inlet of the pneumatic pressurization valve 111. Through the measurement and control subsystem 6, the electromagnetic valve 1541 of the pneumatic booster valve control circuit is powered on and opened, and then the pneumatic booster valve 111 is opened. The pressure in the working container 11 reaches the pressure required by the purge line by adjusting the opening of the pressure increasing line reducing valve 142. Through the measurement and control subsystem 6, the solenoid valve 1543 of the pneumatic medium inlet valve control circuit is electrically opened, and the pneumatic medium inlet valve 132 is further opened. The extrusion gas is passed from the working vessel 11 through the medium supply line 14 into the inlet line 21, purging all lines through which medium may flow before the valve being tested, to remove excess in the lines.
the pneumatic pressure increasing valve control circuit electromagnetic valve 1541 and the pneumatic medium inlet valve control circuit electromagnetic valve 1543 are powered off through the measurement and control subsystem 6, the pneumatic exhaust valve control circuit electromagnetic valve 1542 is powered on, the pneumatic pressure increasing valve 111 and the pneumatic medium inlet valve 132 are further closed, the pneumatic exhaust valve 114 is opened, the manual exhaust valve 115 and the filling valve 121 are sequentially opened, the medium flows into the working container 11, the working container 11 is externally covered with a heat insulating material, the filling pipeline 12 is a vacuum heat insulating pipe, low-temperature medium vaporization can be reduced, and test pressure is stabilized. After working vessel 11 is filled with the medium, fill valve 121 and manual vent valve 115 are sequentially closed, and pneumatic vent valve control circuit solenoid valve 1542 is de-energized via subsystem 6, thereby closing pneumatic vent valve 114.
the inlet of the tested valve is connected with the inlet pipeline 21, the outlet pipeline 23 is connected with the outlet of the tested valve, and the multi-channel product control pipeline 344 is connected into the control cavity of the tested valve according to the number of the control cavities of the tested valve and the switching requirement. The product control subsystem 3 comprises a product control path inlet pipeline 31, a product control path pressure reducing valve 32, a product control path outlet pipeline 33 and a second gas collecting pipeline 34;
one end of the product control path inlet pipeline 31 is connected with a helium source, the other end of the product control path inlet pipeline is connected with a product control path outlet pipeline 33 through a product control path pressure reducing valve 32, the product control path pressure reducing valve 32 reduces the pressure of the control gas to the control gas pressure required by the test, and the product control path outlet pipeline 33 is connected with a second gas collecting pipeline 34;
a second gas collection line 34 including a first product control line, a second product control line, and a third product control line;
the first product control pipeline comprises a first two-position five-way electromagnetic valve 341-1, a second two-position five-way electromagnetic valve 341-2, a first filter 342-1, a second filter 342-2, a first control channel pressure sensor 343-1 and a second control channel pressure sensor 343-2;
the input end of the first two-position five-way electromagnetic valve 341-1 is used for connecting the output end of the product control path outlet pipeline 33, and the two output ends of the first two-position five-way electromagnetic valve 341-1 are respectively used for connecting the tested valve control cavity interface through the first filter 342-1 and the second filter 342-2;
the second product control pipeline and the third product control pipeline have the same structure and comprise a two-position three-way electromagnetic valve 341-2 and a third filter 342-3, the two-position three-way electromagnetic valve 341-2 is used for being connected with the output end of the product control pipeline outlet pipeline 33, and the output end of the two-position three-way electromagnetic valve 341-2 is used for being connected with the control cavity of the valve to be tested through the third filter 342-3;
when the valve control cavity to be tested only has one interface, connecting the second product control pipeline or the third product control pipeline to the interface of the valve control cavity to be tested;
when the valve control cavity to be tested comprises two interfaces, and only one of the two interfaces is ventilated, the first product control pipeline is connected to the two interfaces of the valve control cavity to be tested;
when the two connectors are simultaneously ventilated or exhausted, the second product control pipeline and the third product control pipeline are simultaneously connected to the tested valve control cavity connector;
when the valve control cavity to be tested comprises three interfaces, wherein the first interface is continuously ventilated or exhausted, and only one of the two outer second interfaces and the third interface is ventilated, the first product control pipeline is connected with the second interface and the third interface, and the second product control pipeline or the third control pipeline is connected with the first interface.
opening a product control path inlet pipeline stop valve 312, so that control gas enters an inlet of a product control path pressure reducing valve 32 through a product control path inlet pipeline filter 311, wherein the pressure of the control gas is obtained by a product control path inlet pipeline pressure gauge 313; the opening size of the pressure reducing valve 32 of the product control path is adjusted, so that the pressure in the outlet pipeline 33 of the product control path reaches the pressure required by the control cavity of the tested valve. The product control line outlet line shut-off valve 332 is opened to allow the control gas to pass through the product control line outlet line buffer cylinder 334 to the second gas collection line 34.
The purge replacement line inlet line shut-off valve 412 is opened to allow the purge replacement gas to enter the inlet of the purge replacement line pressure reducing valve 42 through the purge replacement line inlet line filter 411, the line pressure being obtained by the purge replacement line inlet line pressure gauge 413. The pressure in the outlet pipeline 4 of the blowing replacement pipeline reaches the pressure required by blowing replacement by adjusting the opening size of the pressure reducing valve 42 of the blowing replacement pipeline.
The electromagnetic valves 341 of the product control circuits are controlled to be electrified by the measurement and control subsystem 6, so that control gas enters a control cavity of the tested valve and the tested valve is opened; the outlet cut-off valve 232, the front exhaust cut-off valve 221, and the recovery tank exhaust valve 236 are opened. Intermittently opening and closing the blow-off replacement path outlet line cut-off valve 432, so that the blow-off replacement gas passes through the blow-off replacement path outlet line filter 434, the adapter 435, the filter 221, the low-temperature flowmeter 212, the valve to be tested, and the outlet line 23 in sequence, thereby replacing the air in the medium line sub-system and blowing off the surplus substances such as dust and the like which may exist. After the blowing replacement, the blowing replacement outlet line shut-off valve 432 is closed.
It should be noted that, in this embodiment, the replacement by blowing is not limited to the replacement by blowing at the inlet and outlet of the tested valve, but the replacement by blowing may be performed in other chambers according to the test requirements of the tested valve, and the filler pipe 435 may be disassembled from the medium pipe subsystem 2 and connected to the chamber to be replaced by blowing.
Step 5, system precooling:
after the blowing and replacement, the pneumatic medium inlet valve control circuit electromagnetic valve 1543 is powered through the measurement and control subsystem 6, so that the pneumatic medium inlet valve 132 is opened, and the medium sequentially passes through the inlet pipeline 21, the tested valve and the outlet pipeline 23 and enters the recovery container 233. During pre-cooling, the medium pressure in different systems is monitored in real time by the pressure sensor 113 and the inlet pressure sensor 213.
It should be particularly noted that, when the tested valve is large, the pneumatic pressure increasing valve control circuit electromagnetic valve 1541 may be powered through the measurement and control subsystem 6, so as to open the pneumatic pressure increasing valve 111, and the pressure increasing pressure reducing valve 142 is adjusted to increase the pressure of the working container 11, increase the medium flowing speed, and thus improve the pre-cooling efficiency of the tested valve. On the contrary, if the precooling time needs to be extended, the outlet shutoff valve 232 is opened by a small opening degree, and the flow rate of the medium is decreased.
It should be noted that, when the product is precooled, since the pipeline system is at normal temperature, in order to shorten the precooling time of the pipeline system, the front exhaust stop valve 221 of the front exhaust pipeline 22 may be opened to discharge the medium vaporized gas caused by the pipeline system.
Step 6, sealing test
The electromagnetic valves 341 of the product control circuits are powered on or powered off through the measurement and control subsystem 6, so that the tested valves are closed; the front exhaust cut-off valve 221 of the front exhaust line 22 is closed, and the outlet cut-off valve 232 of the outlet line 23 is opened. The pneumatic medium inlet valve control circuit electromagnetic valve 1543 is electrified through the measurement and control subsystem 6, so that the pneumatic medium inlet valve 132 is opened. Through the measurement and control subsystem 6, the electromagnetic valve 1541 of the pneumatic booster valve control circuit is powered on and opened, and then the pneumatic booster valve 111 is opened. The opening of the pressure increasing circuit 142 is adjusted to make the pressure in the working container 11 reach the pressure required by the sealing test. The seal test pressure is monitored in real time by the inlet pressure sensor 213. When the pressure reaches, the leak detection stop valve 52 on the leak detection pipeline 51 is opened, the outlet stop valve 232 is closed, and the leakage medium enters the leak detection testing device 54 through the vaporizer 53, so that the leakage amount of the tested valve is obtained.
It should be noted that, if the pressure of the tested valve seal test is low, the pneumatic medium inlet valve control circuit electromagnetic valve 1543 is first powered off by the measurement and control subsystem 6 to close the pneumatic medium inlet valve 132, and the pneumatic exhaust valve control circuit electromagnetic valve 1542 is powered on to open the pneumatic exhaust valve 114. The inlet pressure of the tested valve can be reduced by opening the front exhaust stop valve 221, or the manual exhaust valve 115, or both valves.
It should be specifically noted that, when the leakage amount of the tested valve is small, before the pressurization of the working container, the outlet stop valve 232 can be directly closed, and the leak detection stop valve is opened, so that the leakage amount of the tested valve in the pressurization process can be observed.
Step 7, action test
The electromagnetic valves 341 of the product control circuits are powered on or powered off through the measurement and control subsystem 6, so that the tested valve is closed, and the front exhaust stop valve 221 is closed; the outlet shutoff valve 232 is opened. The pneumatic medium inlet valve control circuit electromagnetic valve 1543 is electrified through the measurement and control subsystem 6, so that the pneumatic medium inlet valve 132 is opened. Through the measurement and control subsystem 6, the electromagnetic valve 1541 of the pneumatic booster valve control circuit is powered on and opened, and then the pneumatic booster valve 111 is opened. The opening of the pressure increasing passage reducing valve 142 is adjusted to make the pressure in the working container 11 reach the pressure required by the action test. The test pressure is monitored in real time by the inlet pressure sensor 213. When the pressure reaches, the multiple production control circuit electromagnetic valves 341 are powered on or powered off through the measurement and control subsystem, so that the tested valve is opened or closed, and the inlet and outlet pressure and the medium flow of the tested valve are monitored in real time through the inlet pressure sensor 213, the outlet pressure sensor 231 and the low-temperature flow meter 212.
It should be noted that before the operation test, the leak detection stop valve 52 needs to be closed to prevent the leak detection device from being impacted by the medium; the recovery tank 236 is opened to prevent the media from accumulating and becoming pressurized.
It is to be noted that, in the testing stages of the embodiments of the present invention, various steps may be modified and changed according to specific testing requirements without departing from the spirit and scope of the present invention.
Step 8, end of test:
after each test requirement is completed, the pneumatic booster valve control circuit electromagnetic valve 1541 is powered off and the pneumatic exhaust valve control circuit electromagnetic valve 1542 is powered on in sequence through the measurement and control subsystem 6, so that the pneumatic booster valve 111 is closed, and the pneumatic exhaust valve 114 is opened. The isomorphic inlet pressure sensor 213 observes the pressure in the inlet line 21, and when the pressure is low, the front exhaust cut-off valve 221 is opened, and the pressure in the inlet line 21 of the valve to be tested is reduced by the above operations. When the medium pressure is low, the pneumatic medium inlet valve control circuit electromagnetic valve 1543 is powered off through the measurement and control subsystem 6, so that the pneumatic medium inlet valve 132 is closed. The electromagnetic valves 341 of the product control circuits are powered on or powered off through the measurement and control subsystem 6, so that the tested valves are closed; the outlet shutoff valve 232 is opened. The tested valve was isolated from the test system.
If emergency occurs in the test process, the pneumatic medium inlet valve control circuit electromagnetic valve 1543 is immediately powered off through the measurement and control subsystem 6, so that the pneumatic medium inlet valve 132 is closed, and the medium is cut off. Then, the pneumatic pressure increasing valve control circuit electromagnetic valve 1541 is powered off and the pneumatic exhaust valve control circuit electromagnetic valve 1542 is powered on in sequence through the measurement and control subsystem 6, so that the pneumatic pressure increasing valve 111 is closed, the pneumatic exhaust valve 114 is opened, and the pressure of the test system is reduced.
The test system of the invention has been used for a plurality of successful tests of the typical test, the screening test and the research test of the low-temperature valve.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (11)
1. A liquid rocket engine performance detection system is characterized by comprising a medium supply subsystem (1), a medium pipeline subsystem (2), a product control subsystem (3), a blowing and replacing subsystem (4), a leakage detection subsystem (5) and a measurement and control subsystem (6);
the inlet of the tested valve is connected with the medium supply subsystem (1) and the blowing and replacing subsystem (4) through one part of branches of the medium pipeline subsystem (2), and the outlet of the tested valve is connected with the leakage detecting subsystem (5) through the other part of branches of the medium pipeline subsystem (2); the control port of the tested valve is connected with the product control subsystem (3);
the medium supply subsystem (1) supplies the supplied medium meeting the test pressure requirement to the tested valve through the medium pipeline subsystem (2);
the product control subsystem (3) is used for providing required control gas for the pneumatic actuating mechanism of the tested valve;
the leakage detection subsystem is used for detecting a medium leaked by the tested valve;
the blowing and replacing subsystem (4) is used for introducing blowing gas meeting the test requirement into the medium pipeline subsystem (2) and replacing air in the medium pipeline subsystem (2) and the tested valve;
the medium pipeline subsystem (2) is used for providing passages connected to the tested valve for the medium supply subsystem (1), the product control subsystem (3), the blowing and replacing subsystem (4) and the leakage detection subsystem (5) and also used for recycling media at the inlet and the outlet of the tested valve;
the measurement and control subsystem (6) is connected with the medium supply subsystem (1), the medium pipeline subsystem (2), the product control subsystem (3), the blowing and replacing subsystem (4) and the leakage detection subsystem (5) and is used for obtaining measurement parameters of the subsystems and controlling the pipeline switches of the subsystems.
2. A liquid rocket engine performance detection system according to claim 1, wherein said medium supply subsystem (1) comprises a working vessel (11), a filling line (12), a medium supply line (13), a pressurized air source line (14), a pneumatic valve control line (15);
a working container (11) for temporarily storing a medium used in the test;
the filling pipeline (12) is connected with the working container (11) and is used for filling the medium into the working container (11);
the pressurization gas source pipeline (14) is used for introducing gas required by the test into the working container (11) so as to obtain medium pressure meeting the test requirement;
and a medium supply pipeline (13) which connects the working container (1) with the inlet of the valve to be tested through a part of branches of the medium pipeline subsystem (2).
3. The system for detecting the performance of a liquid rocket engine according to claim 2, wherein the working container (11) is externally covered with a heat insulating material, and the filling pipeline (12) is a vacuum heat insulating pipe.
4. A liquid rocket engine performance detection system according to claim 2, wherein said working container (11) is connected to a manual exhaust valve (115);
a manual vent valve (115) is used to expedite the discharge of the medium boil-off gas.
5. A liquid rocket engine performance detection system according to claim 1, wherein said medium pipe subsystem (2) comprises an inlet pipe (21), a front exhaust pipe (22), a front exhaust valve (221), an outlet pipe (23), a recovery tank (233);
one end of the inlet pipeline (21) is connected with the medium supply system (1) and used for conveying the medium supplied from the medium supply subsystem (1) to the inlet of the tested valve; the inlet pipeline (21) is provided with a filter (211), a low-temperature flowmeter (212) and a low-temperature inlet pressure sensor (213), and the filter (211) is arranged close to the inlet of the tested valve and used for blocking the excess possibly existing in the medium pipeline subsystem from entering the tested valve; the low-temperature flowmeter (212) is used for measuring the medium flow entering the tested valve; the inlet pressure sensor (213) is used for monitoring the inlet pressure of the tested valve in real time;
the front exhaust pipeline (22) is connected with the inlet pipeline (21) close to the inlet of the tested valve, and the front exhaust pipeline (22) is connected with the recovery container (233) and used for recovering the medium in the inlet pipeline; a front exhaust stop valve (221) is arranged between the front exhaust pipeline (22) and the recovery container (233) and is used for controlling the on-off of media in the front exhaust pipeline;
one end of an outlet pipeline (23) is connected with an outlet of the tested valve, the other end of the outlet pipeline is divided into two paths, one path is connected with a recovery container (233), the other path is connected with the leakage detection subsystem, and an outlet pressure sensor (231) is arranged at the position, close to the outlet of the tested valve, of the outlet pipeline and used for obtaining the outlet pressure of the tested valve; an outlet stop valve (232) is arranged between the outlet pipeline (23) and the recovery container (233) and is used for controlling the outlet flow of the tested valve.
6. A liquid rocket engine performance detection system according to claim 1, wherein said product control subsystem (3) comprises a product control path inlet line (31), a product control path pressure reducing valve (32), a product control path outlet line (33), a second gas collecting line (34);
one end of the product control path inlet pipeline (31) is connected with a helium source, the other end of the product control path inlet pipeline is connected with a product control path outlet pipeline (33) through a product control path pressure reducing valve (32), the product control path pressure reducing valve (32) reduces the pressure of control gas to the control gas pressure required by the test, and the product control path outlet pipeline (33) is connected with a second gas collection pipeline (34);
a second gas collection pipeline (34) comprising a first product control pipeline, a second product control pipeline, and a third product control pipeline;
the first product control pipeline comprises a first two-position five-way electromagnetic valve (341-1), a second two-position five-way electromagnetic valve (341-2), a first filter (342-1), a second filter (342-2), a first control path pressure sensor (343-1) and a second control path pressure sensor (343-2);
the input end of the first two-position five-way electromagnetic valve (341-1) is used for being connected with the output end of the product control circuit outlet pipeline (33), and the two output ends of the first two-position five-way electromagnetic valve (341-1) are respectively used for being connected with a tested valve control cavity interface through a first filter (342-1) and a second filter (342-2);
the second product control pipeline and the third product control pipeline have the same structure and comprise a two-position three-way electromagnetic valve (341-2) and a third filter (342-3), wherein the two-position three-way electromagnetic valve (341-2) is used for being connected with the output end of the product control pipeline outlet pipeline (33), and the output end of the two-position three-way electromagnetic valve (341-2) is used for being connected with a tested valve control cavity through the third filter (342-3);
when the valve control cavity to be tested only has one interface, connecting the second product control pipeline or the third product control pipeline to the interface of the valve control cavity to be tested;
when the valve control cavity to be tested comprises two interfaces, and only one of the two interfaces is ventilated, the first product control pipeline is connected to the two interfaces of the valve control cavity to be tested;
when the two connectors are simultaneously ventilated or exhausted, the second product control pipeline and the third product control pipeline are simultaneously connected to the tested valve control cavity connector;
when the valve control cavity to be tested comprises three interfaces, wherein the first interface is continuously ventilated or exhausted, and only one of the two outer second interfaces and the third interface is ventilated, the first product control pipeline is connected with the second interface and the third interface, and the second product control pipeline or the third control pipeline is connected with the first interface.
7. A liquid rocket engine performance testing system as claimed in claim 1, wherein said leak detection subsystem includes a leak detection line (51), a leak detection shut-off valve (52), a vaporizer (53), and a leak detection testing device (54);
when the pressure reaches, a leak detection stop valve (52) on a leak detection pipeline (51) is opened, an outlet passage of the tested valve is closed, and a leakage medium enters a leak detection testing device (54) through a vaporizer (53), so that the leakage quantity of the tested valve is obtained.
8. A method of testing the performance of a liquid rocket engine using the system of claim 1, comprising the steps of:
s1, system purging: before the tested valve is connected, purging pipelines through which all media possibly flow in front of the tested valve, and removing redundant substances in the pipelines;
s2, filling media: transferring and injecting the test medium in the storage tank into the medium supply subsystem (1) to provide the test medium meeting the test requirements for the subsequent test;
s3, connecting the tested valve: connecting the inlet, the outlet and the control cavity interface of the tested valve with the corresponding interfaces of the test system, ensuring that a test medium can be introduced into the tested valve and control gas can enter the product control cavity;
s4, blowing and replacing: helium with a certain pressure is introduced into an inlet of the tested valve, excess possibly existing in the tested valve is blown off, air in the medium pipeline subsystem (2) and the tested valve is replaced, and the situation that air is precooled and frozen to enter the tested valve to cause damage to the tested valve when a medium flows through the air is prevented;
s5, system precooling: opening the tested valve, and opening an inlet valve and an outlet valve of the testing system to enable a testing medium to flow through the tested valve, precooling the tested valve from the inside and reaching the temperature required by the test;
s6, sealing test: closing the tested valve, introducing different pressures required by the test from the inlet of the tested valve, and checking the leakage amount of the tested valve from the outlet of the tested valve;
s7, action test: introducing medium pressure meeting the test requirement to an inlet of the tested valve, opening an outlet of the test system, opening or closing the tested valve, wherein the opening and closing are once actions, and the actions are carried out until the action times meeting the test requirement are reached;
s8, finishing the test: and after the test content is finished, cutting off the test medium at the inlet of the tested valve, removing the pressure of the control cavity of the tested valve, discharging the inlet pressure of the tested valve from the front exhaust pipeline, and separating the tested valve from the test system.
9. The method for testing performance of a liquid rocket engine as claimed in claim 8, wherein said medium supplying subsystem (1) is provided with an automatic air vent valve and a manual air vent valve, and in step S2, in order to increase the filling speed during filling the medium, said automatic air vent valve and said manual air vent valve are opened simultaneously to increase the discharge of vaporized gas of the medium and increase the filling speed, and at the same time, it is able to judge whether the medium is full by the airflow sound at the outlet of said manual air vent valve.
10. The method for testing the performance of a liquid rocket engine according to claim 8, wherein said medium pipeline subsystem (2) comprises an inlet pipeline (21), a front exhaust pipeline (22), a front exhaust valve (221), an outlet pipeline (23), and a recovery tank (233);
one end of the inlet pipeline (21) is connected with the medium supply system (1) and used for conveying the medium supplied from the medium supply subsystem (1) to the inlet of the tested valve; the inlet pipeline (21) is provided with a filter (211), a low-temperature flowmeter (212) and a low-temperature inlet pressure sensor (213), and the filter (211) is arranged close to the inlet of the tested valve and used for blocking the excess possibly existing in the medium pipeline subsystem from entering the tested valve; the low-temperature flowmeter (212) is used for measuring the medium flow entering the tested valve; the inlet pressure sensor (213) is used for monitoring the inlet pressure of the tested valve in real time;
the front exhaust pipeline (22) is connected with the inlet pipeline (21) close to the inlet of the tested valve, and the front exhaust pipeline (22) is connected with the recovery container (233) and used for recovering the medium in the inlet pipeline; a front exhaust stop valve (221) is arranged between the front exhaust pipeline (22) and the recovery container (233) and is used for controlling the on-off of media in the front exhaust pipeline;
one end of an outlet pipeline (23) is connected with an outlet of the tested valve, the other end of the outlet pipeline is divided into two paths, one path is connected with a recovery container (233), the other path is connected with the leakage detection subsystem, and an outlet pressure sensor (231) is arranged at the position, close to the outlet of the tested valve, of the outlet pipeline and used for obtaining the outlet pressure of the tested valve; an outlet stop valve (232) is arranged between the outlet pipeline (23) and the recovery container (233) and is used for controlling the outlet flow of the tested valve;
when the system is precooled, for a tested valve with a smaller passage than the inlet pipeline, the front exhaust pipeline is opened to accelerate the flow of the medium so as to shorten the precooling time.
11. The method for testing the performance of a liquid rocket engine according to claim 9, wherein during the sealing test, for the test requirement that the test pressure is less than the vaporization pressure of the working container, the front exhaust pipeline is opened to accelerate the pressure drop speed of the inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738694.9A CN113833584B (en) | 2021-06-30 | 2021-06-30 | Liquid rocket engine performance detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738694.9A CN113833584B (en) | 2021-06-30 | 2021-06-30 | Liquid rocket engine performance detection system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113833584A true CN113833584A (en) | 2021-12-24 |
| CN113833584B CN113833584B (en) | 2023-09-29 |
Family
ID=78962779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110738694.9A Active CN113833584B (en) | 2021-06-30 | 2021-06-30 | Liquid rocket engine performance detection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113833584B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116221615B (en) * | 2023-03-06 | 2024-05-17 | 北京航天试验技术研究所 | Process control system and control method for safe hydrogenation operation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3332814A1 (en) * | 1983-09-12 | 1985-03-28 | Pickel, Volker, 5412 Ransbach-Baumbach | Sealing test device for the localisation of leaks on hollow bodies |
| US20040129906A1 (en) * | 2002-12-18 | 2004-07-08 | Snecma Moteurs | Cryogenic valve device |
| US20130186180A1 (en) * | 2012-01-20 | 2013-07-25 | TLI Enterprises, Inc. | High Speed Helium Leak Detection System and Method |
| CN109630320A (en) * | 2018-10-22 | 2019-04-16 | 陕西蓝箭航天技术有限公司 | Purging system and blowing adapter for cryogenic liquid rocket engine |
| CN110082046A (en) * | 2019-04-26 | 2019-08-02 | 中国科学院理化技术研究所 | A kind of valve low temperature leak detection system and leak hunting method |
| CN110411735A (en) * | 2019-07-15 | 2019-11-05 | 合肥通用机械研究院有限公司 | A kind of Subzero valve simulation duty testing device |
| CN111413093A (en) * | 2020-03-20 | 2020-07-14 | 蓝箭航天技术有限公司 | Integrated test system for cryogenic bearing and dynamic seal |
| US20210131903A1 (en) * | 2019-11-06 | 2021-05-06 | Mahmood Ghasemvand | Systems and methods for testing gas leak detectors |
-
2021
- 2021-06-30 CN CN202110738694.9A patent/CN113833584B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3332814A1 (en) * | 1983-09-12 | 1985-03-28 | Pickel, Volker, 5412 Ransbach-Baumbach | Sealing test device for the localisation of leaks on hollow bodies |
| US20040129906A1 (en) * | 2002-12-18 | 2004-07-08 | Snecma Moteurs | Cryogenic valve device |
| US20130186180A1 (en) * | 2012-01-20 | 2013-07-25 | TLI Enterprises, Inc. | High Speed Helium Leak Detection System and Method |
| CN109630320A (en) * | 2018-10-22 | 2019-04-16 | 陕西蓝箭航天技术有限公司 | Purging system and blowing adapter for cryogenic liquid rocket engine |
| CN110082046A (en) * | 2019-04-26 | 2019-08-02 | 中国科学院理化技术研究所 | A kind of valve low temperature leak detection system and leak hunting method |
| CN110411735A (en) * | 2019-07-15 | 2019-11-05 | 合肥通用机械研究院有限公司 | A kind of Subzero valve simulation duty testing device |
| US20210131903A1 (en) * | 2019-11-06 | 2021-05-06 | Mahmood Ghasemvand | Systems and methods for testing gas leak detectors |
| CN111413093A (en) * | 2020-03-20 | 2020-07-14 | 蓝箭航天技术有限公司 | Integrated test system for cryogenic bearing and dynamic seal |
Non-Patent Citations (1)
| Title |
|---|
| 张京东等: "液体火箭发动机低温阀门铝垫片密封性能数值分析", 推进技术 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116221615B (en) * | 2023-03-06 | 2024-05-17 | 北京航天试验技术研究所 | Process control system and control method for safe hydrogenation operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113833584B (en) | 2023-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101957294B (en) | Saving type valve low temperature test system | |
| CN111044234B (en) | System and method for detecting air tightness of polar plate and electric pile of fuel cell | |
| JP5679367B2 (en) | Battery box airtight inspection device | |
| CN108087719B (en) | Inflating device for small-sized sealing products and inflating method thereof | |
| CN114060721A (en) | Device and method for filling liquefied gas | |
| KR200490385Y1 (en) | Leak Testing Apparatus of Ball valve | |
| CN215722553U (en) | Gas discharging column capable of continuously supplying gas for hydrogenation station | |
| CN113833584A (en) | System and method for detecting performance of liquid rocket engine | |
| KR102147162B1 (en) | Multi step gas leak test system for high pressure | |
| CN113390581B (en) | Inflation and testing device for liquid carrier rocket bellows | |
| KR102271832B1 (en) | Gas leak test system with multi-test function | |
| CN205388531U (en) | Large -scale aqueous vapor solenoid valve detecting system that synthesizes | |
| CN113670702A (en) | Gas mixing system and gas mixing method for SF6 decomposed gas | |
| CN219224515U (en) | Sample corrosion test device | |
| KR102271831B1 (en) | Gas leak test system for high pressure | |
| CN116520212B (en) | Test system applied to high-pressure cold helium solenoid valve | |
| CN213658179U (en) | Sealed oil circuit structure that detects | |
| CN218895903U (en) | Multi-channel automatic air pressure tightness testing device | |
| CN203718371U (en) | Liquefied natural gas filling machine capable of detecting inner leakage automatically | |
| CN212132047U (en) | Process pipeline system for low-temperature bearing and dynamic seal test | |
| CN213272049U (en) | Gas conveying system | |
| CN114659821B (en) | System and method for detecting performance of hydrogenation equipment | |
| KR102640691B1 (en) | High-pressure tester self-diagnosis apparatus for hydrogen car parts | |
| CN220893769U (en) | Rocket valve test system | |
| JP2012078225A (en) | Battery box airtightness inspection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |