CN112629868A - Liquid oxygen supply system of engine test bed - Google Patents

Liquid oxygen supply system of engine test bed Download PDF

Info

Publication number
CN112629868A
CN112629868A CN202011633554.7A CN202011633554A CN112629868A CN 112629868 A CN112629868 A CN 112629868A CN 202011633554 A CN202011633554 A CN 202011633554A CN 112629868 A CN112629868 A CN 112629868A
Authority
CN
China
Prior art keywords
liquid oxygen
oxygen supply
pipeline
nitrogen
path
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.)
Pending
Application number
CN202011633554.7A
Other languages
Chinese (zh)
Inventor
王文彬
周培好
许海涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Aerospace Sanfa High Tech Co Ltd
Original Assignee
Beijing Aerospace Sanfa High Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Aerospace Sanfa High Tech Co Ltd filed Critical Beijing Aerospace Sanfa High Tech Co Ltd
Priority to CN202011633554.7A priority Critical patent/CN112629868A/en
Publication of CN112629868A publication Critical patent/CN112629868A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/02—Details or accessories of testing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0323—Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Testing Of Engines (AREA)

Abstract

A liquid oxygen supply system of an engine test bed comprises a liquid oxygen supply path and a nitrogen adding path; along the direction from the liquid oxygen filling port to the oxygenating blender, the liquid oxygen supply path comprises a liquid oxygen supply path starting ball valve, a liquid oxygen storage tank, a first pneumatic ball valve of the liquid oxygen supply path, a flowmeter of the liquid oxygen supply path, a flow orifice plate of the liquid oxygen supply path and a second pneumatic ball valve of the liquid oxygen supply path which are sequentially communicated through a pipeline; along the direction of a nitrogen gas injection port from a nitrogen gas source to a liquid oxygen storage tank, the nitrogen gas pressurizing road comprises a nitrogen gas pressurizing road filter, a manual stop valve of the nitrogen gas pressurizing road, a pressure reducing valve of the nitrogen gas pressurizing road, an electromagnetic valve of the nitrogen gas pressurizing road and a one-way valve of the nitrogen gas pressurizing road which are sequentially communicated through pipelines. The liquid oxygen supply system of the engine test bed can accurately control the opening and closing of the oxygen valve, and adopts a nitrogen pressurization mode to realize win-win effect, thereby avoiding the explosion of an oxygen pipeline and considering both safety and applicability.

Description

Liquid oxygen supply system of engine test bed
Technical Field
The invention relates to the technical field of test bed tests, in particular to a liquid oxygen supply system of an engine test bed.
Background
The test bed engine liquid oxygen supply system is an important component of an engine ground test, the design of an oxygen system is one of key systems for the construction of an engine test bed, and the oxygen system is mainly used for providing oxidant with accurate flow for test parts and an igniter and accurately controlling the opening and closing of an oxygen valve. In addition, the high-pressure pure oxygen has strong oxidizability, if the high-speed movement iron filings in the pipeline or grease can cause the explosion of the oxygen pipeline, and the design of the oxygen system needs to take the safety and the applicability into consideration.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the liquid oxygen supply system of the engine test bed is provided.
The technical solution of the invention is as follows:
a liquid oxygen supply system of an engine test bed comprises a liquid oxygen supply path and a nitrogen adding path; along the direction from the liquid oxygen filling port to the oxygenating blender, the liquid oxygen supply path comprises a liquid oxygen supply path starting ball valve, a liquid oxygen storage tank, a first pneumatic ball valve of the liquid oxygen supply path, a flowmeter of the liquid oxygen supply path, a flow orifice plate of the liquid oxygen supply path and a second pneumatic ball valve of the liquid oxygen supply path which are sequentially communicated through a pipeline; along the direction of a nitrogen gas injection port from a nitrogen gas source to a liquid oxygen storage tank, the nitrogen gas pressurizing road comprises a nitrogen gas pressurizing road filter, a manual stop valve of the nitrogen gas pressurizing road, a pressure reducing valve of the nitrogen gas pressurizing road, an electromagnetic valve of the nitrogen gas pressurizing road and a one-way valve of the nitrogen gas pressurizing road which are sequentially communicated through pipelines.
Further, the liquid oxygen supply path comprises a liquid oxygen supply path filter, and two ends of the liquid oxygen supply path filter are communicated with the liquid oxygen filling port and the liquid oxygen supply path starting ball valve through pipelines.
Furthermore, the liquid oxygen supply path comprises a liquid oxygen supply path metal hose, and two ends of the liquid oxygen supply path metal hose are respectively communicated with the second pneumatic ball valve of the liquid oxygen supply path and the oxygen supplementing blender.
Further, the liquid oxygen supply path comprises a liquid oxygen storage tank pressure measuring point, a liquid oxygen supply path first pressure measuring point, a main oil inlet path temperature measuring point and a liquid oxygen supply path second pressure measuring point, the liquid oxygen storage tank pressure measuring point is positioned at the upper part of the liquid oxygen storage tank, the main oil inlet path temperature measuring point and the liquid oxygen supply path second pressure measuring point are both arranged on a pipeline communicated with the liquid oxygen supply path flowmeter and the liquid oxygen supply path flow orifice plate, and the liquid oxygen supply path second pressure measuring point is arranged on a pipeline communicated with the liquid oxygen supply path flow orifice plate and the liquid oxygen supply path second pneumatic ball valve.
Further, the nitrogen pressurization path comprises a nitrogen pressurization path pressure gauge, and the nitrogen pressurization path pressure gauge is arranged on a pipeline communicated with the nitrogen pressurization path pressure reducing valve and the nitrogen pressurization path electromagnetic valve.
Further, the liquid oxygen supply system of the engine test bed comprises a nitrogen blowing-off line, the nitrogen blowing-off line comprises a main nitrogen blowing-off line path and a filling pipe blowing-off line connected in parallel, and the main nitrogen blowing-off line and a pre-injection pipeline blowing-off line; the method comprises the following steps that a nitrogen source is arranged to a filling pipe blowing-off line, a main line blowing-off line and inlets of a pre-spraying line blowing-off line, and a main line of the nitrogen blowing-off line comprises a manual stop valve of the nitrogen blowing-off line and a pressure reducing valve of the nitrogen blowing-off line; one end of the filling pipe blowing way is communicated with the pressure reducing valve of the nitrogen blowing way through a pipeline, and the other end of the filling pipe blowing way is communicated with a pipeline communicated with the liquid oxygen supply way filter and the liquid oxygen supply way starting ball valve; one end of the main pipeline blow-off pipeline is communicated with the pressure reducing valve of the nitrogen blow-off pipeline through a pipeline, and the other end of the main pipeline blow-off pipeline is communicated with a pipeline communicated with the first pneumatic ball valve of the liquid oxygen supply pipeline and the flowmeter of the liquid oxygen supply pipeline; one end of the pipeline blowing-off way before spraying is communicated with the pressure reducing valve of the nitrogen blowing-off way through a pipeline, and the other end of the pipeline is communicated with a pipeline communicated with the second pneumatic ball valve and the liquid oxygen supply way metal hose.
Furthermore, the nitrogen blowing way comprises a nitrogen blowing way filter, and two ends of the nitrogen blowing way filter are communicated with the liquid oxygen filling port and the manual stop valve of the nitrogen blowing way through pipelines.
Further, the nitrogen purging pipeline comprises a nitrogen purging pipeline pressure gauge, and the nitrogen purging pipeline pressure gauge is arranged on a pipeline which is communicated with a pressure reducing valve of the nitrogen purging pipeline and a nitrogen source to the filling pipe purging pipeline, and is used for communicating the main pipeline purging pipeline and an inlet of the pipeline purging pipeline before spraying.
Further, along the nitrogen blowing direction, the filling pipe blowing way comprises a filling pipe blowing way electromagnetic valve and a filling pipe blowing way one-way valve which are communicated through a pipeline; the main pipeline blowing-off pipeline comprises a main pipeline blowing-off pipeline electromagnetic valve and a main pipeline blowing-off pipeline one-way valve which are communicated through a pipeline; the pre-spraying pipeline blowing-off circuit comprises a pre-spraying pipeline blowing-off circuit electromagnetic valve and a pre-spraying pipeline blowing-off circuit one-way valve which are communicated through a pipeline.
Further, the liquid oxygen supply system of the engine test bed comprises an air release path, the air release path comprises an air release path safety valve path and an air release path stop valve path which are arranged in parallel, the air release path safety valve path and the air release path stop valve path are both communicated with an air release port of the liquid oxygen storage tank through pipelines, outlets of the air release path safety valve path and the air release path stop valve path are both communicated with the atmosphere, and the air release path safety valve path and the air release path stop valve path are respectively provided with an air release path safety valve and an air release path stop valve.
Compared with the prior art, the invention has the advantages that:
1. the liquid oxygen supply system of the engine test bed can accurately control the opening and closing of the oxygen valve, and adopts a nitrogen pressurization mode to realize win-win effect, thereby avoiding the explosion of an oxygen pipeline and considering both safety and applicability.
2. According to the liquid oxygen supply system of the engine test bed, the nitrogen pressurizing path filter and the nitrogen blowing path filter of the liquid oxygen supply path filter are arranged, so that the purity of liquid oxygen, the purity of pressurized nitrogen and the purity of nitrogen of a blowing path are improved, and the situation that grease or iron chips moving at high speed in a pipeline explode an oxygen pipeline is avoided.
3. According to the liquid oxygen supply system of the engine test bed, the metal hose is arranged on the liquid oxygen supply path, so that the flexibility of the supply system in a certain distance range is realized.
4. According to the liquid oxygen supply system of the engine test bed, the related parameters of the whole oxygen supply system can be effectively monitored in time by arranging the related valves and the pressure gauge for monitoring, so that the precision of the whole oxygen supply system is improved, and meanwhile, the situation of oxygen pipeline explosion is avoided.
5. The liquid oxygen supply system of the engine test bed is provided with the nitrogen blowing-off circuit, the filling pipe blowing-off circuits connected in parallel, the main pipeline blowing-off circuit and the pipeline blowing-off circuit before spraying are arranged in a targeted manner, all key parts of the liquid oxygen supply circuit are effectively blown off, and the situation that grease or iron chips moving at high speed in the pipeline explode the oxygen pipeline is avoided.
6. According to the liquid oxygen supply system of the engine test bed, the gas placing path is arranged, and when the pressure monitored by the first pressure measuring point of the liquid oxygen supply path is greater than the preset value, nitrogen can be released through the gas discharging path, so that the liquid oxygen storage tank is prevented from exploding.
Drawings
FIG. 1 is a schematic diagram of an engine test bed liquid oxygen supply system of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the liquid oxygen supply system of the engine test bed comprises a liquid oxygen supply path 10 and a nitrogen adding path 20; the liquid oxygen supply path 10 comprises a liquid oxygen supply path starting ball valve 12, a liquid oxygen storage tank 13, a liquid oxygen supply path first pneumatic ball valve 14, a liquid oxygen supply path flowmeter 15, a liquid oxygen supply path flow orifice plate 16 and a liquid oxygen supply path second pneumatic ball valve 17 which are communicated with each other through pipelines in sequence along the direction from a liquid oxygen filling port to the oxygenating blender; along the nitrogen source to the nitrogen gas filling opening direction of liquid oxygen storage tank 13, nitrogen adds way 20 includes nitrogen gas pressurization way filter 21, the manual stop valve 22 of nitrogen gas pressurization way, nitrogen gas pressurization way relief pressure valve 23, nitrogen gas adds way solenoid valve 25 and nitrogen gas and adds way check valve 26 that way communicates in proper order through the pipeline. The liquid oxygen supply system of the engine test bed can accurately control the opening and closing of the oxygen valve, and adopts a nitrogen pressurization mode to realize win-win effect, thereby avoiding the explosion of an oxygen pipeline and considering both safety and applicability.
Preferably, the liquid oxygen supply path 10 includes a liquid oxygen supply path filter 11, and both ends of the liquid oxygen supply path filter 11 are communicated with the liquid oxygen filling port and the liquid oxygen supply path activation ball valve 12 through pipes. The nitrogen blowing way 30 comprises a nitrogen blowing way filter 31, and two ends of the nitrogen blowing way filter 31 are communicated with the liquid oxygen filling port and the manual stop valve 32 of the nitrogen blowing way through pipelines. Through setting up liquid oxygen supply path filter nitrogen gas pressurization way filter and nitrogen gas blowdown way filter, improved the purity of liquid oxygen, the purity of pressurization nitrogen gas and the purity of blowdown way nitrogen gas, avoid grease or the condition that the iron fillings of high-speed motion made the oxygen pipeline explosion in the pipeline.
Preferably, the liquid oxygen supply path 10 includes a liquid oxygen supply path metal hose 18, and both ends of the liquid oxygen supply path metal hose 18 are respectively communicated with the liquid oxygen supply path second pneumatic ball valve 17 and the oxygen supplement mixer. The metal hose is arranged on the liquid oxygen supply path, so that the flexibility of the supply system in a certain distance range is realized.
Preferably, the liquid oxygen supply path 10 includes a liquid oxygen tank pressure measuring point 191, a liquid oxygen supply path first pressure measuring point 192, a main oil inlet path temperature measuring point 193 and a liquid oxygen supply path second pressure measuring point 194, the liquid oxygen tank pressure measuring point 191 is located at the upper part of the liquid oxygen tank 13, the main oil inlet path temperature measuring point 192 and the liquid oxygen supply path second pressure measuring point 193 are both arranged on a pipeline communicating the liquid oxygen supply path flowmeter 15 and the liquid oxygen supply path flow orifice plate 16, and the liquid oxygen supply path second pressure measuring point 194 is arranged on a pipeline communicating the liquid oxygen supply path flow orifice plate 16 and the liquid oxygen supply path second pneumatic ball valve 17. Preferably, the nitrogen pressurization path 20 includes a nitrogen pressurization path pressure gauge 24, and the nitrogen pressurization path pressure gauge 24 is arranged on a pipeline communicating the nitrogen pressurization path pressure reducing valve 23 and the nitrogen pressurization path electromagnetic valve 25. Further preferably, the nitrogen purging pipeline 30 includes a nitrogen purging pipeline pressure gauge 34, and the nitrogen purging pipeline pressure gauge 34 is arranged on a pipeline communicating the nitrogen purging pipeline pressure reducing valve 33 and the nitrogen source to the inlet of the filling pipe purging pipeline 35, the main pipeline purging pipeline 36 and the pre-injection pipeline purging pipeline 37. Through the monitoring that sets up relevant valve and manometer, can in time effectively monitor the relevant parameter to whole system of supporting, and then improve the precision of whole system of supporting, simultaneously, also avoided the condition of oxygen pipeline explosion.
Preferably, the liquid oxygen supply system of the engine test bed comprises a nitrogen blowing-off line 30, wherein the nitrogen blowing-off line 30 comprises a main nitrogen blowing-off line path, a filling pipe blowing-off line 35, a main line blowing-off line 36 and a pre-injection line blowing-off line 37, which are connected in parallel; the nitrogen is fed to the inlets of the filling pipe blowing-off line 35, the main pipeline blowing-off line 36 and the pre-spraying pipeline blowing-off line 37 along a nitrogen source, and the main pipeline of the nitrogen blowing-off line comprises a manual stop valve 32 of the nitrogen blowing-off line and a pressure reducing valve 33 of the nitrogen blowing-off line; one end of the filling pipe blowing way 35 is communicated with the pressure reducing valve 33 of the nitrogen blowing way through a pipeline, and the other end of the filling pipe blowing way is communicated with a pipeline communicated with the liquid oxygen supply way filter 11 and the liquid oxygen supply way starting ball valve 12; one end of the main pipeline blow-off pipeline 36 is communicated with the nitrogen blow-off pipeline pressure reducing valve 33 through a pipeline, and the other end of the main pipeline blow-off pipeline is communicated with a pipeline communicated with the liquid oxygen supply pipeline first pneumatic ball valve 14 and the liquid oxygen supply pipeline flow meter 15; one end of the pre-spraying pipeline blowing-off pipeline 37 is communicated with the nitrogen blowing-off pipeline pressure reducing valve 33 through a pipeline, and the other end of the pre-spraying pipeline blowing-off pipeline 37 is communicated with a pipeline communicated with the second pneumatic ball valve 17 and the liquid oxygen supply pipeline metal hose 18. Further preferably, in the nitrogen purging direction, the fill pipe purging line 35 includes a fill pipe purging line electromagnetic valve 351 and a fill pipe purging line check valve 352 which are communicated through a pipeline; the main pipeline blowing-off pipeline 36 comprises a main pipeline blowing-off pipeline electromagnetic valve 361 and a main pipeline blowing-off pipeline one-way valve 362 which are communicated through pipelines; the pre-spray pipeline blowing-off circuit 37 comprises a pre-spray pipeline blowing-off circuit electromagnetic valve 371 and a pre-spray pipeline blowing-off circuit one-way valve 372 which are communicated through pipelines. Through setting up the nitrogen gas blowdown way to corresponding filler pipe blowdown way that sets up parallelly connected, main pipeline blowdown way and the pipeline blowdown way before spouting, effectual each key part blowdown to the liquid oxygen supply path avoids grease or the condition that high-speed motion iron fillings make the oxygen pipeline explosion in the pipeline.
Preferably, the liquid oxygen supply system of the engine test bed comprises an air release path 40, the air release path comprises an air release path safety valve path and an air release path stop valve path which are arranged in parallel, the air release path safety valve path and the air release path stop valve path are both communicated with an air release port of the liquid oxygen storage tank 13 through pipelines, outlets of the air release path safety valve path and the air release path stop valve path are both communicated with the atmosphere, and the air release path safety valve 41 and the air release path stop valve 42 are respectively arranged on the air release path safety valve path and the air release path stop valve path. Through setting up the gas circuit of putting, when the pressure that the first pressure measurement station of liquid oxygen supply circuit monitored was greater than the predetermined value, can release nitrogen gas through the gassing way, avoid liquid oxygen storage tank to explode.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A liquid oxygen supply system of an engine test bed is characterized by comprising a liquid oxygen supply path and a nitrogen adding path;
along the direction from the liquid oxygen filling port to the oxygenating blender, the liquid oxygen supply path comprises a liquid oxygen supply path starting ball valve, a liquid oxygen storage tank, a first pneumatic ball valve of the liquid oxygen supply path, a flowmeter of the liquid oxygen supply path, a flow orifice plate of the liquid oxygen supply path and a second pneumatic ball valve of the liquid oxygen supply path which are sequentially communicated through a pipeline;
along the direction of a nitrogen gas injection port from a nitrogen gas source to a liquid oxygen storage tank, the nitrogen gas pressurizing road comprises a nitrogen gas pressurizing road filter, a manual stop valve of the nitrogen gas pressurizing road, a pressure reducing valve of the nitrogen gas pressurizing road, an electromagnetic valve of the nitrogen gas pressurizing road and a one-way valve of the nitrogen gas pressurizing road which are sequentially communicated through pipelines.
2. The system according to claim 1, wherein the liquid oxygen supply path comprises a liquid oxygen supply path filter, both ends of which are communicated with the liquid oxygen filling port and the liquid oxygen supply path activation ball valve through pipes.
3. The system of claim 2, wherein the liquid oxygen supply path comprises a liquid oxygen supply path metal hose, and both ends of the liquid oxygen supply path metal hose are respectively communicated with the second pneumatic ball valve of the liquid oxygen supply path and the oxygenating blender.
4. The system of claim 1, wherein the liquid oxygen supply path comprises a liquid oxygen tank pressure measurement point, a liquid oxygen supply path first pressure measurement point, a main feed line temperature measurement point, and a liquid oxygen supply path second pressure measurement point, the liquid oxygen tank pressure measurement point is located at an upper portion of the liquid oxygen tank, the main feed line temperature measurement point and the liquid oxygen supply path second pressure measurement point are both disposed on a conduit communicating with the liquid oxygen supply path flow orifice plate and the liquid oxygen supply path flow meter, and the liquid oxygen supply path second pressure measurement point is disposed on a conduit communicating with the liquid oxygen supply path flow orifice plate and the liquid oxygen supply path second pneumatic ball valve.
5. The system of claim 1, wherein the nitrogen pressurization circuit comprises a nitrogen pressurization circuit pressure gauge disposed on a line connecting the nitrogen pressurization circuit pressure reducing valve and the nitrogen pressurization circuit solenoid valve.
6. The system of claim 3, comprising a nitrogen blow-off line, wherein the nitrogen blow-off line comprises a main nitrogen blow-off line path and a filler pipe blow-off line connected in parallel, a main line blow-off line and a pre-injection line blow-off line; the method comprises the following steps that a nitrogen source is arranged to a filling pipe blowing-off line, a main line blowing-off line and inlets of a pre-spraying line blowing-off line, and a main line of the nitrogen blowing-off line comprises a manual stop valve of the nitrogen blowing-off line and a pressure reducing valve of the nitrogen blowing-off line; one end of the filling pipe blowing way is communicated with the pressure reducing valve of the nitrogen blowing way through a pipeline, and the other end of the filling pipe blowing way is communicated with a pipeline communicated with the liquid oxygen supply way filter and the liquid oxygen supply way starting ball valve; one end of the main pipeline blow-off pipeline is communicated with the pressure reducing valve of the nitrogen blow-off pipeline through a pipeline, and the other end of the main pipeline blow-off pipeline is communicated with a pipeline communicated with the first pneumatic ball valve of the liquid oxygen supply pipeline and the flowmeter of the liquid oxygen supply pipeline; one end of the pipeline blowing-off way before spraying is communicated with the pressure reducing valve of the nitrogen blowing-off way through a pipeline, and the other end of the pipeline is communicated with a pipeline communicated with the second pneumatic ball valve and the liquid oxygen supply way metal hose.
7. The system of claim 6, wherein the nitrogen purging line comprises a nitrogen purging line filter, and both ends of the nitrogen purging line filter are communicated with the liquid oxygen filling port and the manual stop valve of the nitrogen purging line through pipelines.
8. The system of claim 6, wherein the nitrogen purging circuit comprises a nitrogen purging circuit pressure gauge, and the nitrogen purging circuit pressure gauge is disposed on a pipeline communicating a pressure reducing valve of the nitrogen purging circuit and a nitrogen source to the filler pipe purging circuit, the main pipeline purging circuit, and an inlet of the pre-injection pipeline purging circuit.
9. The system of claim 6, wherein, in the nitrogen purge direction, the fill pipe purge line comprises a fill pipe purge line solenoid valve and a fill pipe purge line check valve in communication via a conduit; the main pipeline blowing-off pipeline comprises a main pipeline blowing-off pipeline electromagnetic valve and a main pipeline blowing-off pipeline one-way valve which are communicated through a pipeline; the pre-spraying pipeline blowing-off circuit comprises a pre-spraying pipeline blowing-off circuit electromagnetic valve and a pre-spraying pipeline blowing-off circuit one-way valve which are communicated through a pipeline.
10. The system of claim 1, comprising a gas release path, wherein the gas release path comprises a gas release path safety valve path and a gas release path stop valve path which are arranged in parallel, the gas release path safety valve path and the gas release path stop valve path are both communicated with a gas release port of the liquid oxygen storage tank through a pipeline, outlets of the gas release path safety valve path and the gas release path stop valve path are both communicated with the atmosphere, and the gas release path safety valve path and the gas release path stop valve path are respectively provided with a gas release path safety valve and a gas release path stop valve.
CN202011633554.7A 2020-12-31 2020-12-31 Liquid oxygen supply system of engine test bed Pending CN112629868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011633554.7A CN112629868A (en) 2020-12-31 2020-12-31 Liquid oxygen supply system of engine test bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011633554.7A CN112629868A (en) 2020-12-31 2020-12-31 Liquid oxygen supply system of engine test bed

Publications (1)

Publication Number Publication Date
CN112629868A true CN112629868A (en) 2021-04-09

Family

ID=75289901

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011633554.7A Pending CN112629868A (en) 2020-12-31 2020-12-31 Liquid oxygen supply system of engine test bed

Country Status (1)

Country Link
CN (1) CN112629868A (en)

Similar Documents

Publication Publication Date Title
US20210206621A1 (en) System and method for delivering fuel
KR101361880B1 (en) Method and device for filling pressure gas containers
CN109322764B (en) A kind of controllable gas injection type accumulator of low temperature liquid level
CN202252823U (en) High-purity krypton and xenon filling system
US20190337795A1 (en) Mobile distribution station having adjustable feed network
CN109668737A (en) A kind of rocket engine ejector filler liquid flow test system
KR20220017840A (en) Device and method for filling with liquefied gas
CN112629868A (en) Liquid oxygen supply system of engine test bed
CN214149849U (en) Liquid oxygen supply system of engine test bed
KR20190038625A (en) Method and apparatus for detecting the amount of gas in a calibratable manner
WO2017183185A1 (en) Gas filling device
CN217111442U (en) Gas heater test bench
CN208108572U (en) A kind of safe filling apparatus of refrigerant
CN112128439B (en) Back pressure device of safety valve
CN212204008U (en) 70MPa hydrogenation machine injection system
CN217111443U (en) Liquid oxygen supply system
CN217111321U (en) Fuel supply system of gas heater
JP2017207094A (en) Hydrogen filling device and hydrogen filling method
JP2013148120A (en) Hydrogen gas filling device and method for measuring hydrogen gas release amount
CN218994655U (en) Multistage depressurization air tightness testing device
CN201651754U (en) Portable single-tube LNG filling device
CN114235377A (en) Gas heater test bench
CN104976929A (en) Simulation air source device
CN215179260U (en) Pressure testing device of full earthing tank body
CN112629867A (en) Oil supply system of engine test bed

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