CN105547661A - Conveying system flow resistance matching acceptance test apparatus and test method thereof - Google Patents
Conveying system flow resistance matching acceptance test apparatus and test method thereof Download PDFInfo
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- CN105547661A CN105547661A CN201410602368.5A CN201410602368A CN105547661A CN 105547661 A CN105547661 A CN 105547661A CN 201410602368 A CN201410602368 A CN 201410602368A CN 105547661 A CN105547661 A CN 105547661A
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Abstract
The invention discloses a conveying system flow resistance matching acceptance test apparatus. The apparatus comprises two simulation tanks, and a pump, a valve, and a flow sensor connected with each other, internal channels at the bottoms of the simulation tanks and an internal channel of the bottom of a tank in a to-be-accepted conveying system are consistent, a pressure difference sensor is connected between the two simulation tanks, in the usage state, the bottom of one simulation tank is communicated with an inlet of one branch pipe of a to-be-tested piece, the bottom of the other simulation tank is communicated with an inlet of the other branch pipe of the to-be-tested piece, and an inlet of the pump is communicated with an outlet of the to-be-tested piece. According to the conveying system flow resistance matching acceptance test apparatus and a test method thereof, the flow resistance of two branch pipelines of a test piece can be conveniently tested, the simulation tanks can simulate the real state of the tank, flow boundaries of the simulation tanks and the real tank are guaranteed to be the same, and the influence of a ground test tool on a test result is eliminated.
Description
Technical field
The present invention relates to induction system reception test technical field, particularly relate to a kind of induction system flow resistance coupling reception test device, the invention still further relates to the test method of this test unit.
Background technology
Induction system as the important subsystem of carrier rocket power system, for propellant is transported to engine according to particular requirement.In order to make compact conformation, weight reduction, the final stage of some carrier rocket adopts four tank single-engined parallel configuration schemes, and two tanks are oxygenant, and two tanks are incendiary agent.Delivery pipe needs first to be gathered by two tanks of propellant of the same race, and be then connected to engine delivery port, due to layout, two branch's flow resistances of induction system also exist difference.The existence of flow resistance difference, causes two tank propellant expenditures of propellant of the same race asynchronous, directly affects the flight attitude of final-stage rocket, even affect the amount usable of propellant, cause the deadweight of propellant to increase, reduce carrying capacity.
For differences in flow resistance impact is reduced to acceptable scope, need to carry out an acceptance inspection test to induction system flow resistance match condition, but, there is no test unit and the test method that can realize the examination of induction system flow resistance coupling at present.
Summary of the invention
The technical matters that the present invention solves does not realize the test unit of induction system flow resistance coupling examination and the problem of test method in prior art, and then provide a kind of induction system flow resistance to mate reception test device, and provide the test method of this device further, to verify whether the flow resistance of induction system two arm meets the demands.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is as follows:
Induction system flow resistance coupling reception test device of the present invention, comprise two simulation tanks, also comprise the pump be interconnected, valve and flow sensor, inner flow passage bottom described simulation tank is consistent with the inner flow passage bottom the tank in the induction system needing to check and accept, differential pressure pickup is communicated with between two described simulation tanks, under using state, the bottom of a described simulation tank is communicated with the entrance of a take-off pipe of test specimen to be measured, the bottom of simulating tank described in another is communicated with the entrance of another take-off pipe of described test specimen to be measured, the entrance of described pump and the outlet of described test specimen to be measured.
Preferably, be provided with the slender pipeline be communicated with described simulation tank at the top of each described simulation tank, slender pipeline is used for forming stable liquid level difference fast, shortens test period.
Preferably, two described slender pipelines were communicated with by pneumatic die cushion communicating pipe.
Preferably, described induction system flow resistance coupling reception test device also comprises the thermometer for measuring the residing environment temperature of test
Preferably, described flow sensor is arranged between the entrance of described pump and the outlet of described test specimen.
Preferably, described valve is set to ball valve, and described ball valve is arranged between the outlet of described flow sensor and described test specimen.
Preferably, described induction system flow resistance coupling reception test device also comprises purified water preparation system.
Preferably, described delivery side of pump place is provided with recovery tank.
Present invention also offers the test method of above-mentioned induction system flow resistance coupling reception test device, comprise the following steps:
S01: the entrance of the bottom of a described simulation tank with a take-off pipe of test specimen to be measured is communicated with, the bottom of simulating tank described in another is communicated with the entrance of another take-off pipe of described test specimen to be measured, by the outlet of the entrance of described pump and described test specimen to be measured;
S02: open described valve, observe described flow sensor, by regulating the parameter of described pump to make flow reach operating condition of test, after described differential pressure pickup stable reading, record described differential pressure pickup reading, this reading is the flow resistance difference between described test specimen to be measured two take-off pipe.
Preferably, during test, in described pneumatic die cushion communicating pipe, maintain certain pressure.
Beneficial effect of the present invention is as follows:
Induction system flow resistance coupling reception test device of the present invention and test method thereof can be tested test specimen two branch line flow resistance easily, and inner flow passage bottom simulation tank in the present invention is consistent with the inner flow passage bottom the tank in the induction system needing to check and accept, make to simulate the time of day that tank can simulate tank, ensure that simulation tank is identical with the flow boundary of true tank, eliminate the impact of ground experiment frock on test result.
Accompanying drawing explanation
Fig. 1 is the structural representation of induction system flow resistance of the present invention coupling reception test device;
In figure:
1 simulation tank, 2 slender pipelines, 3 pumps, 4 valves, 5 differential pressure pickups, 6 flow sensors, 7 thermometers, 8 pneumatic die cushion communicating pipes, 9 test specimens to be measured.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention and beneficial effect are described further.
See accompanying drawing 1, 1 induction system flow resistance coupling reception test device of the present invention, comprise two simulation tanks 1, also comprise the pump 3 be interconnected, valve 4 and flow sensor 6, inner flow passage bottom simulation tank 1 is consistent with the inner flow passage bottom the tank in the induction system needing to check and accept, differential pressure pickup 5 is communicated with between two simulation tanks 1, under using state, the bottom of a simulation tank 1 is communicated with the entrance of a take-off pipe of test specimen 9 to be measured, the bottom of another simulation tank 1 is communicated with the entrance of another take-off pipe of test specimen 9 to be measured, the entrance of pump 3 and the outlet of test specimen to be measured 9.
Carry out for the ease of test, the slender pipeline 2 be communicated with simulation tank 1 can be set at the top of each simulation tank 1, the variable quantity of liquid level difference in the unit interval can be increased like this, reduce liquid level difference equilibration time, accelerate the formation of liquid level difference, and then shorten the time of whole test.
When the liquid flow in tank is very fast, easy formation cavitation erosion, while the reduction tank life-span, also can affect measuring accuracy, two slender pipelines can be made to be communicated with by pneumatic die cushion communicating pipe 8, like this, when testing, can make to maintain certain pressure, the generation of cavitating in flow process to avoid liquid in pneumatic die cushion communicating pipe 8, there will not be local pressure too low in warranty test system simultaneously, there is water cavitation, affect measuring accuracy.
In simulation tank in the present invention, oxygenant, incendiary agent can be replaced with water, at this moment the numerical value read from differential pressure pickup 5 can convert and obtain real numerical value, conversion relation is relevant with temperature, therefore test unit of the present invention can also comprise the thermometer 7 for measuring the residing environment temperature of test, certainly, also can not establish thermometer 7, but adopt other thermometer existed in environment.
In the present invention, flow sensor 6 can be arranged between the entrance of pump 3 and the outlet of test specimen 9, and valve 4 can be any form, such as ball valve, and ball valve can be arranged between the outlet of flow sensor 6 and test specimen 9.
In order to ensure that upper arrow product is not contaminated, meet test of many times requirement, induction system flow resistance coupling reception test device of the present invention can also comprise purified water preparation system, certainly, this purified water preparation system must not be arranged, and pure water can obtain from other channel.
In order to be that water can recycle, recovery tank can be set in the exit of pump 3.
The test method of induction system flow resistance coupling reception test device of the present invention, comprises the following steps:
S01: be communicated with the entrance of a take-off pipe of test specimen 9 to be measured the bottom of a simulation tank 1, simulates the bottom of tank 1 by another and is communicated with the entrance of another take-off pipe of test specimen 9 to be measured, by the outlet of the entrance of pump 3 and test specimen to be measured 9;
S02: open valve 4, observes flow sensor 6, and by regulating the parameter of pump 3 to make flow reach operating condition of test, after differential pressure pickup 5 stable reading, record differential pressure pickup 5 reading, this reading is the flow resistance difference between test specimen to be measured 9 liang of take-off pipes.
By the flow resistance difference of test actual measurement, judge whether two branch's flow resistances of induction system meet design requirement, if do not met the demands, replaceable corresponding flow resistance regulating element, until meet the demands, in order to ensure the precision that flow resistance is mated, the sensor that can range selected less.
Claims (10)
1. induction system flow resistance coupling reception test device, it is characterized in that: comprise two simulations tank (1), also comprise the pump (3) be interconnected, valve (4) and flow sensor (6), the inner flow passage of described simulation tank (1) bottom is consistent with the inner flow passage bottom the tank in the induction system needing to check and accept, differential pressure pickup (5) is communicated with between two described simulation tanks (1), under using state, the bottom of a described simulation tank (1) is communicated with the entrance of a take-off pipe of test specimen to be measured (9), the bottom of simulating tank (1) described in another is communicated with the entrance of another take-off pipe of described test specimen to be measured (9), the entrance of described pump (3) and the outlet of described test specimen to be measured (9).
2. induction system flow resistance mates reception test device as claimed in claim 1, it is characterized in that: be provided with the slender pipeline (2) be communicated with described simulation tank (1) at the top of each described simulation tank (1).
3. induction system flow resistance mates reception test device as claimed in claim 2, it is characterized in that: two described slender pipelines were communicated with by pneumatic die cushion communicating pipe (8).
4. induction system flow resistance mates reception test device as claimed in claim 3, it is characterized in that: described induction system flow resistance coupling reception test device also comprises the thermometer (7) for measuring the residing environment temperature of test.
5. induction system flow resistance mates reception test device as claimed in claim 4, it is characterized in that: described flow sensor (6) is arranged between the entrance of described pump (3) and the outlet of described test specimen (9).
6. induction system flow resistance mates reception test device as claimed in claim 5, it is characterized in that: described valve (4) is set to ball valve, described ball valve is arranged between the outlet of described flow sensor (6) and described test specimen (9).
7. induction system flow resistance mates reception test device as claimed in claim 6, it is characterized in that: described induction system flow resistance coupling reception test device also comprises purified water preparation system.
8. induction system flow resistance coupling reception test device according to any one of claim 1 to 7, is characterized in that: the exit of described pump (3) is provided with recovery tank.
9. according to any one of claim 1 to 8, induction system flow resistance mates the test method of reception test device, it is characterized in that, comprises the following steps:
S01: the bottom of a described simulation tank (1) is communicated with the entrance of a take-off pipe of test specimen to be measured (9), the bottom of simulating tank (1) described in another is communicated with the entrance of another take-off pipe of described test specimen to be measured (9), by the outlet of the entrance of described pump (3) and described test specimen to be measured (9);
S02: open described valve (4), observe described flow sensor (6), flow is made to reach operating condition of test by regulating the parameter of described pump (3), after described differential pressure pickup (5) stable reading, record described differential pressure pickup (5) reading, this reading is the flow resistance difference between described test specimen to be measured (9) two take-off pipe.
10. test method as claimed in claim 9, is characterized in that: during test, maintains certain pressure in described pneumatic die cushion communicating pipe (8).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740029A (en) * | 2021-08-31 | 2021-12-03 | 北京宇航系统工程研究所 | Rocket tank propellant flow field visualization test verification system and test method |
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