CN107843330A - The measuring apparatus that a kind of flow is weighed - Google Patents
The measuring apparatus that a kind of flow is weighed Download PDFInfo
- Publication number
- CN107843330A CN107843330A CN201711298754.XA CN201711298754A CN107843330A CN 107843330 A CN107843330 A CN 107843330A CN 201711298754 A CN201711298754 A CN 201711298754A CN 107843330 A CN107843330 A CN 107843330A
- Authority
- CN
- China
- Prior art keywords
- weighing device
- measuring apparatus
- packaging system
- weighing
- pressure 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
- 238000005303 weighing Methods 0.000 claims abstract description 115
- 238000004806 packaging method and process Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims description 47
- 239000007789 gas Substances 0.000 claims description 43
- 238000005259 measurement Methods 0.000 claims description 28
- WFPZPJSADLPSON-UHFFFAOYSA-N dinitrogen tetraoxide Chemical compound [O-][N+](=O)[N+]([O-])=O WFPZPJSADLPSON-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 230000000452 restraining effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003380 propellant Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 4
- 230000001914 calming effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Abstract
The purpose of the application is to provide the measuring apparatus that a kind of flow is weighed, and the measuring apparatus includes packaging system, pressure inlet, weighing device and weighing sensor, wherein, the weighing device is placed in the packaging system with the weighing sensor；The weighing device is placed on the weighing sensor, and the weighing sensor is fixed on the inwall of the packaging system；The first end of the pressure inlet is fixed on the top of the packaging system, and the second end is inserted into the top that the weighing device is placed in the packaging system.Wherein, the pressure inlet is used to distribute pressurization gas into the packaging system and in the weighing device.So as to avoid because pressure inlet is directly connected with the device weighed when the external restraining force for being difficult to overcome brought, and pressurization gas stream it is dynamic caused by the factor such as dynamic effects power so that it is more accurate when weighing device measures.
Description
Technical field
The application is related to field of fluid mechanics, more particularly to the measuring apparatus that a kind of flow is weighed.
Background technology
With the fast development of space technology, new strategic liquid rocket attitude control motor ground heat run flow claims
Load measurement device, for small to several grams per second of tiny flow quantity of attitude control liquid-propellant rocket engine propellant, measurement accuracy will be direct
Influence the thrust of rocket engine, the final precise trajectory and guided missile attack precision for influenceing rocket in too airflight, it is impossible to accurate
The proper mass of true reflection engine, cause posture adjustment failure or deviate predetermined flight track.Therefore, to liquid rocket posture control
The development of engine processed, it is proposed that the strict demand of " high, essence, standard ".At present, existing weighing measurement device is will directly to promote
Agent container pressure piping and propellant export pipeline are mechanically connected, and bring the external restraining force for being difficult to overcome, Yi Jizeng
The factor such as dynamic effects power, causes measurement accuracy not accurate enough caused by body of calming the anger flowing and propellant outflow.
The content of the invention
The purpose of the application is to provide the measuring apparatus that a kind of flow is weighed, with solve weighing container pressure piping connection and
Propellant export pipeline connects, the external restraining force for being difficult to overcome brought, and pressurization gas flowing and propellant outflow production
The factors such as raw dynamic effects power, the problem of causing the precision of weighing measurement inaccurate.
In order to solve the above technical problems, the one side according to the application, there is provided the measuring apparatus that a kind of flow is weighed, institute
Stating measuring apparatus includes：Packaging system, weighing device, pressure inlet and weighing sensor, wherein, the weighing device and the title
Sensor is retransmitted to be placed in the packaging system；The weighing device is placed on the weighing sensor, and the weighing sensor is consolidated
Due to the inwall of the packaging system；The first end of the pressure inlet is fixed on the top of the packaging system, the insertion of the second end
The top of the weighing device is placed in the packaging system.
Further, the pressure inlet is used to distribute pressurization gas into the packaging system and in the weighing device.
Further, the measuring apparatus also includes：Supply pipe, wherein, the supply pipe is used for the weighing device
Interior addition liquid medium, and the liquid medium in the weighing device is supplied to outside the packaging system.
Further, the first end of the supply pipe is fixed on the top of the packaging system, and the second end is inserted into described
Weighing device.
Further, the pressurization gas of the pressure inlet distribution is insoluble in the liquid medium in the weighing device.
Further, the pressurization gas of pressure inlet distribution includes nitrogen, the liquid medium bag in the weighing device
Include dinitrogen tetroxide.
Further, the volume of the pressurization gas of the pressure inlet distribution and the liquid medium volume in the weighing device
The ratio between include 1~20.
Further, the measuring apparatus includes：Output line is measured, wherein, the measurement output line and the biography of weighing
Sensor connects, and exports the data of the weighing sensor measurement.
Further, the measurement apparatus includes：First control valve, wherein, first control valve and the pressure inlet
First end be fixedly connected, for controlling the pressurization gas that flows into the pressure inlet.
Further, the measurement apparatus includes：Second control valve, wherein, second control valve and the supply pipe
First end be fixedly connected, for controlling the liquid medium that flows into the supply pipe, and flowed out by the supply pipe
Liquid medium.
Compared with prior art, the measuring apparatus that the flow that the application provides is weighed, including packaging system, pressure inlet, title
Refitting is put and weighing sensor, wherein, the weighing device is placed in the packaging system with the weighing sensor；The title
Refitting is placed on the weighing sensor, and the weighing sensor is fixed on the inwall of the packaging system；The pressure inlet
First end be fixed on the top of the packaging system, the second end, which is inserted into the packaging system, is placed in the weighing device
Top.Wherein, the pressure inlet is used to distribute pressurization gas into the packaging system and in the weighing device.So as to keep away
Exempt from the external restraining force for being difficult to overcome because being brought when pressure inlet is directly connected with the device weighed, and pressurization gas stream movable property
The factors such as raw dynamic effects power so that more accurate when weighing device measures.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
The structural representation for the measuring apparatus that flow shown in Fig. 1 is weighed；
Fig. 2 shows the connection enlarged diagram of the pressure pipeline at I in Fig. 1；
Fig. 3 shows the bottom enlarged diagram of propellant feed pipes at II in Fig. 1.
Same or analogous reference represents same or analogous part in accompanying drawing.
Embodiment
The application is described in further detail below in conjunction with the accompanying drawings.
In the embodiment of the application one, there is provided the measuring apparatus that a kind of flow is weighed, the measuring apparatus include：Encapsulation
Device 1, pressure inlet 2, weighing device 3 and weighing sensor 4, wherein, the weighing device 3 is placed in the weighing sensor 4
In the packaging system 1；The weighing device 3 is placed on the weighing sensor 4, and the weighing sensor 4 is fixed on described
The inwall of packaging system 1；The first end of the pressure inlet 2 is fixed on the top of the packaging system 1, and the second end is inserted into described
The top of the weighing device 3 is placed in packaging system 1.So that single space in packaging system is changed into more spaces, encapsulation dress
Putting no longer has the effect of weighing, and is individually separated with weighing device.Wherein, the pressure inlet 2 be used for into the packaging system 1 and
Distribution pressurization gas in the weighing device 3.In a particular embodiment, to the liquid medium in weighing device 3 is supplied to
, it is necessary to increase gas, the top of weighing device 3 does not close for outside, is the device of upward opening, the increasing for facilitating pressure inlet 2 to distribute
Body of calming the anger causes to extrude to the liquid in weighing device 3, weighing device 3 in it liquid medium need it is high-precision measurement with
And the amount supplied to outside liquid medium can be calculated, and pressure inlet 2 is welded on packaging system 1, so as to avoid because
The external restraining force for being difficult to overcome that pressure inlet 2 is brought when being directly connected with the device weighed, and the life of pressurization gas stream movable property
The factor such as dynamic effects power so that weighing device 3 is more accurate when measuring.In the specific embodiment of the application one, than
Measuring apparatus as described in the present application is the flow weighing measurement equipment in the ground heat run of liquid rocket attitude control motor
When, the more accurate and then calculating rocket thrust of weighing device measurement is more accurate, so as to more accurately enter planned orbit or guided missile
The precision to strike target is higher.
Preferably, the measuring apparatus also includes：Supply pipe 5, wherein, the supply pipe 5 is used for the weighing device 3
Interior addition liquid medium, and the liquid medium in the weighing device 3 is supplied to outside the packaging system 1.In this Shen
Liquid medium please be added into weighing device 3 by supply pipe 5 in an embodiment, in order that 3 liquid is situated between in weighing device
Matter is supplied to outside, it is necessary to which pressurization gas, required device corresponding to the outside of packaging system 1 is expressed to by pressure by liquid medium
It is interior, gas is allocated into packaging system 1 and weighing device 3 by pressure inlet 2 in this application, liquid in weighing device 3
The volume air cushion on face top has obtained Equilibrium filling, has reached the purpose to the pressurization gas of weighing device 3.Eliminate pressure inlet 2
Restraining force when being directly connected with weighing device 3, improve the accuracy of flow weighing measurement.It should be noted that to reach increasing
The gas that pressure pipe 2 is distributed is to extrude the purpose of the liquid medium in weighing device 3, it is necessary to the supercharging gas that the pressure inlet 2 distributes
Body is insoluble in the liquid medium in the weighing device 3.
Preferably, the first end of the supply pipe 5 is fixed on the top of the packaging system 1, and the second end is inserted into described
Weighing device 3.When liquid medium is promoted into weighing device 3, promoted by supply pipe 5, supply pipe 5 is inserted into weighing device
There is distance not contact in 3 but with bottom, be welded and fixed in first end and the packaging system 1 of supply pipe 5, the liquid in weighing device 3
By the extruding of pressurization gas, the outside that packaging system 1 is reached by pressure is supplied to corresponding required device or set body medium
It is standby, directly mechanically connected so as to avoid supply pipe 5 with weighing device, the external restraining force for being difficult to overcome brought, and liquid
Body medium flow field goes out the factors such as caused dynamic effects power, and then improves the accuracy of flow weighing measurement, realizes high-precision
Measurement.
Further, the volume for the pressurization gas that the pressure inlet 2 distributes and the liquid medium body in the weighing device 3
The ratio between product includes 1~20.Here, pressure inlet 2 distributes to packaging system the gas body of (liquid upper for including weighing device)
The ratio between liquid medium volume in product and weighing device 3, which includes 1~20, can cause there is enough gas extrusion liquid, gas
Volume is such as 20 times of liquid medium volume greatly, can make it that the flowed fluctuation of liquid medium is stable, and liquid medium liquid level is more steady,
So that the data that weighing device 3 measures are more accurate.Also, by suitable volume differences can pressurization gas to weighing
The pressure of device 3 is uniform, and the influence of extra power is reduced during measurement so that measurement is more accurate.
In the embodiment of the application one, the structural representation for the measuring apparatus that flow as shown in Figure 1 is weighed, the measurement
Device includes above-mentioned packaging system 1, pressure inlet 2, weighing device 3, weighing sensor 4 and supply pipe 5, in addition to the first control valve
6 and second control valve 7, wherein, first control valve 6 is fixedly connected with the first end of the pressure inlet 2, is flowed into for controlling
Pressurization gas in the pressure inlet 2, second control valve 7 is fixedly connected with the first end of the supply pipe 5, for controlling
Make the liquid medium flowed into the supply pipe 5, and the liquid medium flowed out by the supply pipe 5.Here, the first control
Valve 6 can add gas to pressure inlet 3, can also control and distribute gas to container by pressure inlet 2, gas in container is put
Go out, the second control valve 7 can add liquid medium into weighing device, can also control the outflow of liquid medium.Preferably, institute
Stating measuring apparatus includes：Output line 8 is measured, wherein, the measurement output line 8 is connected with the weighing sensor 4, described in output
The data that weighing sensor 4 measures.
In a particular embodiment, the pressurization gas that the pressure inlet 2 distributes includes nitrogen, 3 liquid in the weighing device
Body medium includes dinitrogen tetroxide (as shown in Figure 1).Packaging system 1 is preferably overcoat tank, and pressure inlet 2 is gas pressure pipeline, is claimed
It 3 is weighing container that refitting, which is put, weighing sensor 4 is electronic load cell, and supply pipe 5 is propellant fluid path efferent duct, first
Control valve 6 is pipeline and supercharger control valve, and the second control valve 7 is that propellant imports and exports control valve.Liquid in weighing container 3 is situated between
When matter is dinitrogen tetroxide, rocket attitude control motor can be can be used for as the propellant of engine, the measuring apparatus
Ground heat run high-precision flow weighing measurement, gas boosting design is on the one hand carried out, to by the propellant in weighing container 3
Fuel is supplied to engine, it is necessary to pressurization gas, and by pressure elements such as pipelines, propellant extruding is reached into supply engine
Burn ground run purpose, it is necessary to the gas distributor pipe of pressure pipeline 2 is welded on overcoat tank 1, open pressure charging valve 6,
Gas enters in overcoat tank 1, and now, the volume air cushion of ullage has obtained Equilibrium filling in weighing container 3, has reached to title
The purpose of the pressurization gas of weight container 3, eliminate the restraining force that pressure piping is connected with weighing container.Fig. 2 is shown in Fig. 1 at I
The connection enlarged diagram of pressure pipeline, it can be seen that one end of pressure pipeline is welded on overcoat tank, and the other end is allocated
Gas, pressurization gas N is uniformly distributed into overcoat tank 12, to the liquid N in the weighing device 3 in overcoat tank 12O4Extruded.
On the other hand, Propellant Supply design is carried out, Propellant Supply pipe 5 is inserted in weighing container 3, but has distance, such as Fig. 3 with bottom
In shown Fig. 1 at II propellant feed pipes bottom enlarged diagram, wherein, the distance from bottom of propellant feed pipes 5
Weighing container 3 can be 10mm, so that the propellant in weighing container 3 is reached under the extruding of pressurization gas by supply line 5
To engine, it is, of course, also possible to will be close to open some apertures on the duct wall of the bottom of supply line 5, to avoid in duct bottom
Influence of the vortex of formation to weighing measurement；The upper connection of supply line 5 is welded and fixed with overcoat tank 1, is promoted in weighing container 3
Agent, by pressure elements such as pipelines, reaches the purpose that propellant is provided to engine test under supercharging gas extruding.Therefore, claim
Restraining force can be overcome when being not connected to any pipeline for weight container 3 and pressurization gas flows and the caused dynamic of propellant outflow
The factors such as influence power, weighing container 3 are connected with weighing sensor 4, by measurement signal by cable, are transferred to computer number
According to acquisition processing system, reach the purpose for measuring flow.By the measuring apparatus of above-described embodiment, measurement accuracy can be improved,
Because measurement accuracy will directly affect the thrust of rocket engine, so as to realize the final accurate rail for improving rocket in too airflight
Mark and guided missile attack precision, accurately reflect the proper mass of engine, it is accurate to carry out posture adjustment or carry out predetermined flight track.
It is obvious to a person skilled in the art that the application is not limited to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit herein or essential characteristic, the application can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present application is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the application.Any reference in claim should not be considered as to the involved claim of limitation.This
Outside, it is clear that the word of " comprising " one is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in device claim is multiple
Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade word is used for table
Show title, and be not offered as any specific order.
Claims (10)
1. the measuring apparatus that a kind of flow is weighed, it is characterised in that the measuring apparatus includes：Packaging system, weighing device, increasing
Pressure pipe and weighing sensor, wherein,
The weighing device is placed in the packaging system with the weighing sensor；
The weighing device is placed on the weighing sensor, and the weighing sensor is fixed on the inwall of the packaging system；
The first end of the pressure inlet is fixed on the top of the packaging system, and the second end is inserted into juxtaposition in the packaging system
In the top of the weighing device.
2. measuring apparatus according to claim 1, it is characterised in that the pressure inlet be used for into the packaging system and
Distribution pressurization gas in the weighing device.
3. measuring apparatus according to claim 1, it is characterised in that the measuring apparatus also includes：Supply pipe,
Wherein, the supply pipe is used to add liquid medium into the weighing device, and by the liquid in the weighing device
Body medium is supplied to outside the packaging system.
4. measuring apparatus according to claim 3, the first end of the supply pipe is fixed on the top of the packaging system,
Second end is inserted into the weighing device.
5. the measuring apparatus according to Claims 2 or 3, it is characterised in that the pressurization gas of the pressure inlet distribution is insoluble
Liquid medium in the weighing device.
6. measuring apparatus according to claim 5, it is characterised in that the pressurization gas of the pressure inlet distribution includes nitrogen
Gas, the liquid medium in the weighing device include dinitrogen tetroxide.
7. measuring apparatus according to claim 5, it is characterised in that the volume of the pressurization gas of pressure inlet distribution with
The ratio between liquid medium volume in the weighing device includes 1~20.
8. measuring apparatus according to claim 1, it is characterised in that the measuring apparatus includes：Measure output line,
Wherein, the measurement output line is connected with the weighing sensor, exports the data of the weighing sensor measurement.
9. measuring apparatus according to claim 1, it is characterised in that the measurement apparatus includes：First control valve,
Wherein, first control valve is fixedly connected with the first end of the pressure inlet, and the pressure inlet is flowed into for controlling
Interior pressurization gas.
10. measuring apparatus according to claim 1, it is characterised in that the measurement apparatus includes：
Second control valve,
Wherein, second control valve is fixedly connected with the first end of the supply pipe, and the supply pipe is flowed into for controlling
Interior liquid medium, and the liquid medium flowed out by the supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298754.XA CN107843330B (en) | 2017-12-08 | Flow weighing measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298754.XA CN107843330B (en) | 2017-12-08 | Flow weighing measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107843330A true CN107843330A (en) | 2018-03-27 |
| CN107843330B CN107843330B (en) | 2024-04-16 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443781A (en) * | 2018-09-19 | 2019-03-08 | 上海空间推进研究所 | Self feed back fault identification engine impulse operating condition flow measurement device and method |
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|---|---|---|---|---|
| EP0658750A2 (en) * | 1993-12-14 | 1995-06-21 | Hydrometer GmbH | Method and device for proving volume flowmeters |
| US5475610A (en) * | 1990-11-29 | 1995-12-12 | The Perkin-Elmer Corporation | Thermal cycler for automatic performance of the polymerase chain reaction with close temperature control |
| EP0906872A1 (en) * | 1994-01-04 | 1999-04-07 | Adolf Würth GmbH & Co. KG | Method and device for filling a dispensing container |
| US20120260998A1 (en) * | 2011-04-18 | 2012-10-18 | Precision Flow Technologies, Inc. | Liquid mass measurement and fluid transmitting apparatus |
| US20130064738A1 (en) * | 2010-02-22 | 2013-03-14 | Stefan Berger | Method and device for the metered addition of fluids into reaction vessels |
| CN103278330A (en) * | 2013-04-24 | 2013-09-04 | 北京航天试验技术研究所 | Propellant flow comparison and measurement system for attitude and orbit control engine testing platform |
| CN207688999U (en) * | 2017-12-08 | 2018-08-03 | 上海悟道机电设备有限公司 | A kind of measuring apparatus that flow is weighed |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5475610A (en) * | 1990-11-29 | 1995-12-12 | The Perkin-Elmer Corporation | Thermal cycler for automatic performance of the polymerase chain reaction with close temperature control |
| EP0658750A2 (en) * | 1993-12-14 | 1995-06-21 | Hydrometer GmbH | Method and device for proving volume flowmeters |
| EP0906872A1 (en) * | 1994-01-04 | 1999-04-07 | Adolf Würth GmbH & Co. KG | Method and device for filling a dispensing container |
| US20130064738A1 (en) * | 2010-02-22 | 2013-03-14 | Stefan Berger | Method and device for the metered addition of fluids into reaction vessels |
| US20120260998A1 (en) * | 2011-04-18 | 2012-10-18 | Precision Flow Technologies, Inc. | Liquid mass measurement and fluid transmitting apparatus |
| CN103547894A (en) * | 2011-04-18 | 2014-01-29 | 塞莱斯技术公司 | Liquid mass measurement and fluid transmitting apparatus |
| CN103278330A (en) * | 2013-04-24 | 2013-09-04 | 北京航天试验技术研究所 | Propellant flow comparison and measurement system for attitude and orbit control engine testing platform |
| CN207688999U (en) * | 2017-12-08 | 2018-08-03 | 上海悟道机电设备有限公司 | A kind of measuring apparatus that flow is weighed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443781A (en) * | 2018-09-19 | 2019-03-08 | 上海空间推进研究所 | Self feed back fault identification engine impulse operating condition flow measurement device and method |
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