CN107356315B - Attitude control engine tests propellant mass weighing device - Google Patents
Attitude control engine tests propellant mass weighing device Download PDFInfo
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- CN107356315B CN107356315B CN201710418241.1A CN201710418241A CN107356315B CN 107356315 B CN107356315 B CN 107356315B CN 201710418241 A CN201710418241 A CN 201710418241A CN 107356315 B CN107356315 B CN 107356315B
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- Prior art keywords
- propellant
- electronic scale
- placement platform
- attitude control
- control engine
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/02—Arrangements of bearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/22—Weigh pans or other weighing receptacles; Weighing platforms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of attitude control engines to test propellant mass weighing device, including placement platform, electronic scale, electronic scale height adjustment device, reversal valve, propellant returnable, propellant weighing tank, deflation recycling can, check valve；Propellant returnable and deflation recycling can are fixedly mounted on placement platform；Propellant weighing tank includes that top tank ontology with lower part connects pedestal；A pit is offered on placement platform, places electronic scale in pit；Electronic scale height adjustment device is used to adjust the height of electronic scale；The propellant entrance of top tank ontology is connect with reversal valve with propellant returnable；Reversal valve is connected to external propellant supply system by connecting line, and the propellant outlet of top tank ontology is connected to one-way valve inlet, and one-way valved outlet is connected to deflation recycling can.By using this invention removes pipelines to constrain, the measurement error at measurement initial stage and tank are deflated on the influence of propellant mass precise measurement bring.
Description
Technical field
The present invention relates to airspace engine experimental technique fields, and in particular to attitude control engine tests propellant mass weighing
Device.
Background technique
In attitude control engine test, flow measurement mostly is carried out using mass flowmenter.Metrological service's calibration flowmeter uses
Medium and media physical characteristics, temperature, the viscosity used when the test run of testing ground it is different, the flowmeter of verification and use ring
There is also difference, these factors will affect the accuracy of Small flowrate measurement in border, causes attitude control engine stable state Small flowrate measurement
Technical problem.For these problems, proposes the method that steady state flow calibrated in situ is carried out to mass flowmenter and improve measurement
Precision.According to steady state flow calibrated in situ method, school is carried out to mass flowmenter using quality time method using true propellant
Standard needs to carry out weighing recycling to propellant, and then proposes the design requirement of propellant mass weighing device.
It in mass flowmenter calibration process, needs to carry out precise measurement to propellant mass whithin a period of time, and weighs
The technological difficulties of process are the pipeline constraint of the subsidiary pipeline of weighing tank and the factors such as leakage part propellant gas of deflating
Influence to weighing measurement precision.
Summary of the invention
It deflates to eliminate pipeline constraint, the measurement error at measurement initial stage and tank to propellant mass precise measurement band
The influence come, the present invention provide a kind of attitude control engine test propellant mass weighing device.
The specific technical solution of the present invention is:
The present invention provides a kind of attitude control engines to test propellant mass weighing device, it is characterised in that: including placing
Platform, electronic scale, electronic scale height adjustment device, reversal valve, propellant returnable, propellant weighing tank, recycling of deflating
Tank, check valve and more connecting lines；
Propellant returnable and deflation recycling can are fixedly mounted on placement platform；
Propellant weighing tank includes that top tank ontology with lower part connects pedestal；Lower part connects pedestal upper end and top and stores
Case ontology is connected, and the lower end surface of lower part connection pedestal is contacted with the upper surface of placement platform；
A pit, the size for opening up position face lower part connection pedestal and pit of pit are offered on placement platform
Less than the size of the lower end surface of lower part connection pedestal, electronic scale is placed in pit；Electronic scale height adjustment device is for adjusting electricity
Sub- scale, which rises, is detached from placement platform upper surface for entire propellant weighing tank；
The propellant entrance of top tank ontology is connect with reversal valve with propellant returnable；Reversal valve is pushed away with outside
It is connected into agent supply system by connecting line, the propellant outlet of top tank ontology passes through connecting line and one-way valve inlet
Connection, one-way valved outlet are connected to by connecting line with deflation recycling can.
The weighing device further includes waste gas recovery air bag；The waste gas recovery air bag is connected to deflation recycling can.
Specifically, above-mentioned electronic scale height adjustment device is four, is located at four angles of electronic scale；Electronic scale is high
Spending regulating device includes electronic scale support plate, screw rod and handle；Electronic scale is placed on the supporting plate, and the quadrangle of support plate is distinguished
Equipped with the first screw hole, placement platform offers the second screw hole identical with the first screwhole position in support plate, and the upper end of screw rod is solid
Dingan County fills hand handle, and the lower end of screw rod sequentially passes through the first screw hole and the second screw hole from top to bottom.
Above-mentioned placement platform lower surface is provided with the universal wheel of multiple strap brakes.
The weighing device further includes multiple level(l)ing devices for adjusting placement platform levelness；Level(l)ing device
Including handle, long threaded rod and positioning rubber cover；
Handle is fixedly mounted on long threaded rod one end, and long threaded rod passes perpendicularly through one end installation positioning rubber cover after placement platform,
Positioning rubber cover and ground face contact；The part that long threaded rod passes perpendicularly through placement platform is threadedly coupled with placement platform.
Between the propellant entrance and reversal valve of above-mentioned top tank ontology, between propellant returnable and reversal valve with
And the connecting line between the propellant outlet and one-way valve inlet of top tank ontology is all made of helix tube；
Above-mentioned deflation recycling can is provided with propellant neutralizer.
The weighing device further includes the fixation bracket being vertically fixedly mounted on placement platform；The check valve, reversal valve
And connecting line is both secured on fixed bracket.
Above-mentioned electronic scale selects 0.1g sensibility reciprocal high-precision electronic scale.
Above-mentioned waste gas recovery air bag selects the biggish large size balloon of wall thickness or rubber pneumatic bag.
Concrete operating principle of the invention is:
Before weighing starts, keep placement platform fixed using the brake function of strap brake universal wheel wheel, by adjusting electricity
Sub- scale height adjustment device continues to rise electronic scale when reaching the lower plane of lower part connection pedestal during rising electronic scale,
Electronic scale jacks up propellant weighing tank, so that propellant weighing tank is detached from the upper plane of placement platform, reaches weighing positions, i.e.,
Weighing can be achieved.Firstly, reversal valve is connected to propellant returnable, external propellant feed system pushes away propellant injection
Into agent returnable for a period of time after, reversal valve again with propellant weighing tank propellant entrance be connected to propellant injection propulsion
Agent weighing tank, propellant mass weighing start, when pressure in propellant weighing tank reaches check valve and opens pressure, unidirectionally
Valve opens propellant weighing tank and starts to deflate, and closed check valve after pressure reduction remains title by the switch of check valve
Weight tank in pressure check valve open pressure hereinafter, propellant gas excluded by check valve after enter deflation recycling can in, by
It in neutralizer and is absorbed in deflation recycling can, exhaust gas exports connection waste gas recovery air bag by deflation recycling can and collects.
The present invention has the advantages that
1, each components and connecting line required for weighing of the present invention by propellant are integrated in one and move
Placement platform on, and reasonable recycling has been carried out to propellant, has not only realized propellant mass precise measurement, and also have
Good environmental-protecting performance.
2, reversal valve is set between propellant of the invention weighing tank and propellant returnable, it is therefore an objective to need to calibrate
When flowmeter, to reach flowmeter calibration point can undergo a period of time, avoid this section of time bring measurement error, pass through commutation
This problem can be solved in dielectric film filter by valve.
3, apparatus of the present invention absorb propellant by the neutralizer in recycling can by setting waste gas recovery air bag, and lead to
It crosses waste gas recovery capsule and collects exhaust gas, achieve the effect that zero-emission zero leakage, avoid leading to mass measurement accuracy decline because of deflation.
4, apparatus of the present invention are adjusted electronic scale height, and when work rises electronic scale, and work, which terminates to reduce electronic scale, makes it
It does not stress during inoperative, avoids long-term stressing influence electronic scale measurement accuracy.
5, apparatus of the present invention can reduce the pipeline that weighing tank the import and export pipeline introduces by helix tube and constrain to propellant
The influence of weighing significantly improves mass measurement precision.
6, apparatus of the present invention deflation interface setting check valve is deflated, and can remain weighing storage by check valve deflation
Case pressure is constant, and then is conducive to improve discharge stability.
7, apparatus of the present invention are provided with level(l)ing device and carry out levelness adjusting to electronic scale, further increase survey
The precision of amount.
8, the configuration of the present invention is simple, it is easy to operate, it is practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of weighing device of the present invention；
Fig. 2 is electronic scale height adjustment device partial structural diagram；
Appended drawing reference is as follows:
1- placement platform, 2- electronic scale, 3- electronic scale height adjustment device, 31- electronic scale support plate, 32- screw rod, 33-
Handle, 4- reversal valve, 5- propellant returnable, 6- propellant weighing tank, the top 61- tank ontology, the lower part 62- connect bottom
Seat, 7- deflation recycling can, 8- check valve, 9- connecting line, 10- waste gas recovery air bag, 11- universal wheel, 12- fixed bracket, 13-
Level(l)ing device, 131- handwheel, 132- long threaded rod, 133- positioning rubber cover.
Specific embodiment
Invention is further explained with reference to the accompanying drawing:
Referring to Fig. 1, a kind of attitude control engine test propellant mass weighing device, including placement platform 1, electronic scale 2, electricity
Sub- scale height adjustment device 3, propellant returnable 5, reversal valve 4, propellant weighing tank 6, deflation recycling can 7, check valve 8
And more connecting lines 9；
Propellant returnable 5 and deflation recycling can 7 are fixedly mounted on placement platform 1；
Propellant weighing tank 6 includes that top tank ontology 61 connects pedestal 62 with lower part；Lower part connects 62 upper end of pedestal
It is connected with top tank ontology 61, the lower end of lower part connection pedestal 62 is contacted with the upper surface of placement platform 1；
A pit, the ruler for opening up position face lower part connection pedestal and pit of pit are offered on placement platform 1
The size of the very little lower end surface less than lower part connection pedestal, pit is interior to place electronic scale 2；Electronic scale height adjustment device 3 is for adjusting
Section electronic scale, which rises, pulls away 1 upper surface of placement platform for entire propellant weighing tank；
The propellant entrance of top tank ontology 61 is connect with reversal valve 4 with propellant returnable 5；Reversal valve 4 with
External propellant supply system is connected to by connecting line 9, the propellant outlet of top tank ontology 61 by connecting line 9 with
The connection of 8 entrance of check valve, the outlet of check valve 8 are connected to by connecting line 9 with deflation recycling can 7.
Further, in order to make the exhaust gas after neutralizing discharge the pollution problem of atmosphere bring, which further includes exhaust gas
Recycle air bag 10；Waste gas recovery air bag 10 is connected to deflation recycling can 7, and deflation recycling can 7 is provided with propellant neutralizer.
Referring to fig. 2, electronic scale height adjustment device 3 is four, is located at four angles of electronic scale 2；Electronic scale height
Adjusting fills 3 and sets including electronic scale support plate 31, screw rod 32 and handle 33；Electronic scale 2 is placed in support plate 31, support plate 31
Quadrangle be respectively equipped with the first screw hole, placement platform 1 offers four identical with four the first screwhole positions in support plate 31
Second screw hole, the upper end of screw rod 32 are fixedly mounted handle 33, and the lower end of screw rod 32 sequentially passes through the first screw hole and the from top to bottom
Two screw holes.
In order to avoid propellant corrodes placement platform, 1 lower surface of placement platform is provided with the universal wheel 11 of multiple strap brakes.
In order to make the guarantee level of electronic scale weigh, to guarantee weighing precision, which further includes placing for adjusting
Multiple level(l)ing devices 13 of plateau levels degree；Level(l)ing device 13 includes handwheel 131, long threaded rod 132 and positioning glue
Set 133；
Handwheel 131 is fixedly mounted on 132 one end of long threaded rod, and long threaded rod 132 passes perpendicularly through one end installation after placement platform
Positioning rubber cover 133, positioning rubber cover 133 and ground face contact；Long threaded rod 132 passes perpendicularly through part and the placement platform 1 of placement platform 1
It is threadedly coupled.
The influence of measurement accuracy when in order to reduce pipeline constraint to propellant weighing tank progress propellant mass weighing, on
Between the propellant entrance and reversal valve 4 of portion's tank ontology 61, the storage of between propellant returnable 5 and reversal valve 4 and top
The connecting line 9 that the propellant of case ontology 61 exports between 8 entrance of check valve is all made of helix tube.
In order to keep the connecting line of whole device neat, so that the appearance looks elegant of device, which further includes vertical fixation
The fixation bracket 12 being mounted on placement platform 1；The check valve 8, reversal valve 4, connecting line 9 are both secured to fixed bracket 12
On.
The specific structure and feature of components each in the present invention are illustrated below:
(1) electronic scale selects 0.1g sensibility reciprocal, 35kg range, the high-precision electronic scale of contour dimension 300mm × 400mm.
(2) electronic scale height adjustment device is mainly made of electronic scale support plate, screw rod, handle, and material selects stainless
Steel, for support plate for placing electronic scale, quadrangle is equipped with the bolt hole being adapted with screw rod lower end, on screw rod upper end and mobile device
The identical bolt hole connection with support Board position, by adjusting screw rod, adjustable support plate height, and then it is high to adjust electronic scale
Degree.
(3) propellant returnable is designed as volume 15L, operating pressure 1MPa, material selection 1Cr18Ni9Ti, vessel top
Gas vent, boost port, inlet is arranged in portion, and liquid outlet is arranged in bottom, is mainly used for weighing front and back propellant and holds.
(4) propellant weighing tank is designed as volume 15L, diameter 300mm, operating pressure 4MPa, material selection Ta10,
Gas vent, boost port, inlet is arranged in container top, and liquid outlet is arranged in bottom, and tank bottom support bracket bottom surface is annular plate, just
It is placed on electronic scale in steadily, is mainly used for the propellant of weight needed for weighing process is collected.
(5) neutralization that deflation recycling can is mainly used for propellant gas in deflation course absorbs, material selection PTFE, recycling
Air inlet and air outlet are arranged in tank top, and planar structure is selected in bottom, and sealing structure is selected flanged joint, recycled in use process
Tank domestic demand adds a certain amount of propellant neutralizer.
(6) waste gas recovery air bag selects the biggish large size balloon of wall thickness or rubber pneumatic bag, looks forward to recycling can for collecting from room
The interior propellant exhaust gas by neutralisation treatment, air bag and recycling can are attached using hose, and air bag is fixed on weighing tank top
Portion after avoiding exhaust leak, influences the measurement accuracy of propellant mass weighing.
(7) check valve is connected for stablizing tank pressure with tank gas vent and deflation recycling can entrance pipe.
(8) helix tube is put for connection weighing tank propellant entrance pipe and system valve, and connection weighing tank
Port pipeline and check valve, mainly to reduce measurement accuracy when pipeline is constrained to weighing tank progress propellant mass weighing
It influences.
(9) placement platform is used to convenient for weighing device carry out all weighing device component integrated installations in testing ground
Mobile, placement platform material selects 1Cr18Ni9Ti, and propellant is avoided to corrode mobile device.
Claims (10)
1. a kind of attitude control engine tests propellant mass weighing device, it is characterised in that: including placement platform (1), electronic scale
(2), electronic scale height adjustment device (3), reversal valve (4), propellant returnable (5), propellant weighing tank (6), deflation
Recycling can (7), check valve (8) Ji Duogen connecting line (9)；
Propellant returnable (5) and deflation recycling can (7) are fixedly mounted on placement platform (1)；
Propellant weighing tank (6) includes that top tank ontology (61) connects pedestal (62) with lower part；Lower part connects pedestal (62)
Upper end and top tank ontology are connected, and the lower end of lower part connection pedestal (62) is contacted with the upper surface of placement platform (1)；
Offer a pit on placement platform (1), pit opens up position face lower part connection pedestal (62) and pit
Size is less than the size of the lower end surface of lower part connection pedestal (62), places electronic scale (2) in pit；Electronic scale height adjustment device
(3) rise for adjusting electronic scale by entire propellant weighing tank disengaging placement platform (1) upper surface；
The propellant entrance of top tank ontology (61) is connect with reversal valve (4) with propellant returnable (5)；Reversal valve
(4) it is connected to external propellant supply system by connecting line (9), the propellant outlet of top tank ontology (61) passes through company
Adapter tube road (9) is connected to check valve (8) entrance, and check valve (8) outlet is connected to by connecting line (9) with deflation recycling can (7).
2. attitude control engine according to claim 1 tests propellant mass weighing device, it is characterised in that: further include giving up
Gas recycles air bag (10)；The waste gas recovery air bag (10) is connected to deflation recycling can (7).
3. attitude control engine according to claim 1 or 2 tests propellant mass weighing device, it is characterised in that: described
Electronic scale height adjustment device (3) is four, is located at four angles of electronic scale (2)；Electronic scale height adjustment device (3) packet
Include support plate (31), screw rod (32) and handle (33)；Electronic scale (2) is placed on support plate (31), and the four of support plate (31)
Angle is respectively equipped with the first screw hole, and placement platform (1) offers the second screw hole identical with the first screwhole position in support plate, screw rod
(32) handle (33) are fixedly mounted in upper end, and the lower end of screw rod (32) sequentially passes through the first screw hole and the second screw hole from top to bottom.
4. attitude control engine according to claim 3 tests propellant mass weighing device, it is characterised in that: the placement
Platform (1) lower surface is provided with the universal wheel (11) of multiple strap brakes.
5. attitude control engine according to claim 4 tests propellant mass weighing device, it is characterised in that: further include using
In the multiple level(l)ing devices (13) for adjusting placement platform levelness；Level(l)ing device (13) includes handwheel (131), long spiral shell
Column (132) and positioning rubber cover (133)；
Handwheel (131) is fixedly mounted on long threaded rod (132) one end, and long threaded rod (132) passes perpendicularly through one end after placement platform (1)
It installs positioning rubber cover (133), positioning rubber cover (133) and ground face contact；Long threaded rod (132) passes perpendicularly through the portion of placement platform (1)
Divide and is threadedly coupled with placement platform (1).
6. attitude control engine according to claim 5 tests propellant mass weighing device, it is characterised in that: the top
Between the propellant entrance and reversal valve (4) of tank ontology (61), between propellant returnable (5) and reversal valve (4) and
The connecting line (9) that the propellant of top tank ontology (61) exports between check valve (8) entrance is all made of helix tube.
7. attitude control engine according to claim 6 tests propellant mass weighing device, it is characterised in that: the deflation
Recycling can (7) is provided with propellant neutralizer.
8. attitude control engine according to claim 7 tests propellant mass weighing device, it is characterised in that: further include hanging down
The fixation bracket (12) being directly fixedly mounted on placement platform (1)；The check valve (8), reversal valve (4) and connecting line
(9) it is both secured on fixed bracket (12).
9. attitude control engine according to claim 8 tests propellant mass weighing device, it is characterised in that: the electronics
Scale (2) selects 0.1g sensibility reciprocal high-precision electronic scale.
10. attitude control engine according to claim 9 tests propellant mass weighing device, it is characterised in that: described useless
Gas recycles air bag (10) and selects large size balloon or rubber pneumatic bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418241.1A CN107356315B (en) | 2017-06-06 | 2017-06-06 | Attitude control engine tests propellant mass weighing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418241.1A CN107356315B (en) | 2017-06-06 | 2017-06-06 | Attitude control engine tests propellant mass weighing device |
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| Publication Number | Publication Date |
|---|---|
| CN107356315A CN107356315A (en) | 2017-11-17 |
| CN107356315B true CN107356315B (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710418241.1A Active CN107356315B (en) | 2017-06-06 | 2017-06-06 | Attitude control engine tests propellant mass weighing device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112483892A (en) * | 2020-11-20 | 2021-03-12 | 河南省日立信股份有限公司 | Sulfur hexafluoride removes and retrieves car storage tank group and weighs and removes mode auto-change over device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4987775A (en) * | 1988-10-03 | 1991-01-29 | Hac | Propellant measurement system |
| CN203275095U (en) * | 2013-04-24 | 2013-11-06 | 北京航天试验技术研究所 | Attitude and orbit control engine test platform propellant flow comparison and measurement system |
| CN103528650A (en) * | 2013-09-22 | 2014-01-22 | 西安航天化学动力厂 | Real-time weighing device for shaping |
| CN104154982A (en) * | 2014-08-08 | 2014-11-19 | 北京航天试验技术研究所 | Dynamic container weighing device for calibrating liquid flow |
-
2017
- 2017-06-06 CN CN201710418241.1A patent/CN107356315B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4987775A (en) * | 1988-10-03 | 1991-01-29 | Hac | Propellant measurement system |
| CN203275095U (en) * | 2013-04-24 | 2013-11-06 | 北京航天试验技术研究所 | Attitude and orbit control engine test platform propellant flow comparison and measurement system |
| CN103528650A (en) * | 2013-09-22 | 2014-01-22 | 西安航天化学动力厂 | Real-time weighing device for shaping |
| CN104154982A (en) * | 2014-08-08 | 2014-11-19 | 北京航天试验技术研究所 | Dynamic container weighing device for calibrating liquid flow |
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| CN107356315A (en) | 2017-11-17 |
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