CN107860446A - The equipment that a kind of flow is weighed - Google Patents
The equipment that a kind of flow is weighed Download PDFInfo
- Publication number
- CN107860446A CN107860446A CN201711298756.9A CN201711298756A CN107860446A CN 107860446 A CN107860446 A CN 107860446A CN 201711298756 A CN201711298756 A CN 201711298756A CN 107860446 A CN107860446 A CN 107860446A
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- CN
- China
- Prior art keywords
- weighing device
- weighing
- packaging system
- supply pipe
- pressure inlet
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
Abstract
The purpose of the application is to provide the equipment that a kind of flow is weighed, and the equipment includes：Packaging system, pressure inlet, weighing device, weighing sensor and supply pipe, 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 pressure inlet is placed in the top of the weighing device, for distributing pressurization gas into the packaging system and in the weighing device；The first end of the supply pipe is fixed on the top of the packaging system, and the second end is inserted into the weighing device；Directly mechanically connected so as to avoid supply pipe with weighing device, the external restraining force for being difficult to overcome brought, and flow of liquid medium goes out the factors such as caused dynamic effects power, and then the accuracy of flow weighing measurement is improved, realize high-precision measurement.
Description
Technical field
The application is related to field of fluid mechanics, more particularly to the equipment 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 equipment that a kind of flow is weighed, to solve the connection of weighing container pressure piping and promote
Agent export pipeline connects, the external restraining force for being difficult to overcome brought, and caused by pressurization gas flowing and propellant outflow
The factors such as 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 equipment that a kind of flow is weighed, it is described to set
It is standby to include：Packaging system, weighing device, pressure inlet, supply 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 interior of the packaging system
Wall；
The pressure inlet is placed in the top of the weighing device, for into the packaging system and in the weighing device
Distribute pressurization gas；
The first end of the supply pipe is fixed on the top of the packaging system, and the second end is inserted into the weighing device.
Further, the second end of the supply pipe and the vertical range of the weighing device include 0~10mm.
Further, the diameter of the supply pipe includes 0~30mm.
Further, the supply pipe is used to add liquid medium into the weighing device, and by the dress of weighing
Liquid medium in putting is supplied to outside the packaging system.
Further, the pressurization gas of the pressure inlet distribution is insoluble in the liquid medium in the weighing device.
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 equipment includes：Measure output line,
Wherein, the measurement output line is connected with the weighing sensor, exports the data of the weighing sensor measurement.
Compared with prior art, this application provides the equipment that a kind of flow is weighed, the equipment to include：Packaging system,
Pressure inlet, weighing device, weighing sensor and supply pipe, wherein, the weighing device is placed in described with the weighing sensor
In packaging system；The weighing device is placed on the weighing sensor, and the weighing sensor is fixed on the packaging system
Inwall；The pressure inlet is placed in the top of the weighing device, for into the packaging system and in the weighing device
Distribute pressurization gas；The first end of the supply pipe is fixed on the top of the packaging system, and the second end is inserted into described weigh
Device；Directly mechanically connected so as to avoid supply pipe 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.
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：
Fig. 1 shows the structural representation of the equipment that flow is weighed in the embodiment of the application one；
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 equipment that a kind of flow is weighed, the equipment include：Packaging system 1, increase
Pressure pipe 2, weighing device 3, weighing sensor 4 and supply pipe 5, 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 pressure inlet 2 is placed in the top of the weighing device 3, for into the packaging system 1 and institute
State distribution pressurization gas in weighing device 3；The first end of the supply pipe 5 is fixed on the top of the packaging system 1, the second end
It is inserted into the weighing device 3.So that single space in packaging system is changed into more spaces, packaging system no longer has work of weighing
With individually being separated with weighing device.In a particular embodiment, to the liquid medium in weighing device 3 supplied to outside, is needed
Increase gas, the top of weighing device 3 does not close, and is the device of upward opening, the convenient supercharging gas for receiving pressure inlet 2 and distributing
Body causes to extrude to the liquid in weighing device 3, and weighing device 3 needs high-precision measurement to the liquid medium in it and can
To calculate the amount for being supplied to outside liquid medium.Wherein, the supply pipe 5 is used to add liquid into the weighing device 3
Body medium, and the liquid medium in the weighing device 3 is supplied to outside the packaging system 1.Implement in the application one
In example, liquid medium is added into weighing device 3 by supply pipe 5, in order that the liquid medium in weighing device 3 is supplied to
Liquid medium is expressed to corresponding to the outside of packaging system 1 in required device by outside, it is necessary to pressurization gas by pressure.By liquid
When body medium promotes weighing device 3, promoted by supply pipe 5, supply pipe 5 is inserted into weighing device 3 but had with bottom
Distance does not contact, and is welded and fixed in first end and the packaging system 1 of supply pipe 5, the liquid medium in weighing device 3 passes through supercharging
The extruding of gas, the outside that packaging system 1 is reached by pressure is supplied to corresponding required device or equipment, so as to avoid confession
Should pipe 5 directly mechanically connected with weighing device 3, the external restraining force for being difficult to overcome brought, and flow of liquid medium go out produce
The factor such as dynamic effects power, and then improve the accuracy of flow weighing measurement, realize high-precision measurement.In the application one
In specific embodiment, for example equipment described herein claims for the flow in the ground heat run of liquid rocket attitude control motor
During remeasurement equipment, the more accurate and then calculating rocket thrust of weighing device measurement is more accurate, accurately enters so as to more predetermined
The precision that track or guided missile strike target is higher.
In the embodiment of the application one, gas is allocated into packaging system 1 and weighing device 3 by pressure inlet 2,
The volume air cushion of ullage has obtained Equilibrium filling in weighing device 3, has reached the purpose to the pressurization gas of weighing device 3.
Restraining force when pressure inlet 2 directly mechanically connects with weighing device 3 is eliminated, improves the accuracy of flow weighing measurement.Need
Illustrate, to reach the gas of the distribution of pressure inlet 2 to extrude the purpose of the liquid medium in weighing device 3, it is necessary to the increasing
The pressurization gas that pressure pipe 2 is distributed is insoluble in the liquid medium in the weighing device 3.One end of pressure inlet 2 can be fixed on envelope
The top of assembling device 1, the other end are inserted into packaging system 1, positioned at the top of weighing device 3, so as to can be with by pressure inlet 2
Gas is distributed to the top of liquid in packaging system 1 and in weighing device 3.By the way that pressure inlet 2 is welded into packaging system 1
On, so as to avoid because pressure inlet 2 is directly connected with the device weighed when the external restraining force for being difficult to overcome brought, and supercharging
The factor such as dynamic effects power caused by gas stream is dynamic so that weighing device 3 is more accurate when measuring.
Further, the second end of the supply pipe and the vertical range of the weighing device include 0~10mm.In this Shen
Please be in an embodiment, the second end of supply pipe 5 does not contact with the bottom of weighing device 3 needs distance, such as 0~10mm,
In the preferred embodiment of the application one, the distance at the second end of supply pipe 5 and the bottom of weighing device 3 is 10mm, can make to bring about the desired sensation
Press more stable so that the liquid in weighing device 3 is supplied to outside by after the extruding of pressurization gas by supply pipe 5.In order to
So that by the liquid medium in supply pipe 5 it is more stable supplied to outside, the diameter of the supply pipe includes 0~30mm.
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 equipment that flow as shown in Figure 1 is weighed, the equipment 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 control described
Pressurization gas in pressure inlet 2, second control valve 7 are fixedly connected with the first end of the supply pipe 5, are flowed into for controlling
Liquid medium in the supply pipe 5, and the liquid medium flowed out by the supply pipe 5.Here, the first control valve 6 can
To add gas to pressure inlet 3, it can also control and distribute gas to container by pressure inlet 2, gas in container is released, the
Two control valves 7 can add liquid medium into weighing device, can also control the outflow of liquid medium.Preferably, it is described to set
It is standby to include：Output line 8 is measured, wherein, the measurement output line 8 is connected with the weighing sensor 4, exports the weighing and sensing
The data that device 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 ground can be can be used for as the propellant of engine, the equipment
Heat run high-precision flow weighing measurement, gas boosting design is on the one hand carried out, to by the propellant fuel in weighing container 3
Engine is supplied to, it is necessary to pressurization gas, and by pressure elements such as pipelines, propellant extruding is reached into supply engine burning
The purpose of ground run is, it is necessary to the gas distributor pipe of pressure pipeline 2 is welded on overcoat tank 1, opening pressure charging valve 6, gas
Into in overcoat tank 1, now, the volume air cushion of ullage has obtained Equilibrium filling in weighing container 3, has reached to appearance of weighing
The purpose of the pressurization gas of device 3, eliminate the restraining force that pressure piping 2 mechanically connects with weighing container 3.Fig. 2 is shown in Fig. 1 at I
Pressure pipeline connection enlarged diagram, it can be seen that one end of pressure pipeline 2 is welded on overcoat tank 1, the other end carry out
Gas is distributed, pressurization gas N is uniformly distributed into overcoat tank 12, to the liquid N in the weighing device 3 in overcoat tank 12O4Carry out
Extruding.On the other hand, Propellant Supply design is carried out, Propellant Supply pipe 5 is inserted in weighing container 3, but has distance with bottom,
In Fig. 1 as shown in Figure 3 at II propellant feed pipes bottom enlarged diagram, wherein, the bottom of propellant feed pipes 5
Can be 10mm apart from weighing container 3, so that the propellant in weighing container passes through supply line under the extruding of pressurization gas
Engine is reached, 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 at pipeline bottom
Influence of the vortex that portion is formed to weighing measurement；The upper connection of supply line 5 is welded and fixed with overcoat tank 1, is pushed away in weighing container 3
Enter agent under supercharging gas extruding, by pressure elements such as pipelines, reach the purpose that propellant is provided to engine test.Therefore,
Weighing container 3 can overcome when being not connected to any pipeline to be moved caused by restraining force and pressurization gas flowing and propellant outflow
The factors such as state influence power, weighing container 3 are connected with weighing sensor 4, by measurement signal by cable, are transferred to computer
Data acquisition processing system, reach the purpose of measurement flow.The equipment weighed by flow in above-described embodiment, survey can be improved
Accuracy of measurement, because measurement accuracy will directly affect the thrust of rocket engine, so as to realize the final rocket that improves in too airflight
Precise trajectory and guided missile attack precision, accurately reflect the proper mass of engine, it is accurate to carry out posture adjustment or carry out predetermined fly
Row 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 (7)
1. the equipment that a kind of flow is weighed, it is characterised in that the equipment includes：Packaging system, weighing device, pressure inlet, confession
It should manage 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 pressure inlet is placed in the top of the weighing device, for being distributed into the packaging system and in the weighing device
Pressurization gas；
The first end of the supply pipe is fixed on the top of the packaging system, and the second end is inserted into the weighing device.
2. equipment according to claim 1, it is characterised in that hung down with the weighing device at the second end of the supply pipe
Straight distance includes 0~10mm.
3. equipment according to claim 1, it is characterised in that the diameter of the supply pipe includes 0~30mm.
4. equipment according to claim 1, it is characterised in that the supply pipe is used to add liquid into the weighing device
Body medium, and the liquid medium in the weighing device is supplied to outside the packaging system.
5. equipment according to claim 4, it is characterised in that the pressurization gas of the pressure inlet distribution does not dissolve in the title
Interior liquid medium is put in refitting.
6. equipment according to claim 5, it is characterised in that the volume of the pressurization gas of pressure inlet distribution with it is described
The ratio between liquid medium volume in weighing device includes 1~20.
7. equipment according to claim 1, it is characterised in that the equipment includes：Measure output line,
Wherein, the measurement output line is connected with the weighing sensor, exports the data of the weighing sensor measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298756.9A CN107860446A (en) | 2017-12-08 | 2017-12-08 | The equipment that a kind of flow is weighed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298756.9A CN107860446A (en) | 2017-12-08 | 2017-12-08 | The equipment that a kind of flow is weighed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107860446A true CN107860446A (en) | 2018-03-30 |
Family
ID=61705664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711298756.9A Pending CN107860446A (en) | 2017-12-08 | 2017-12-08 | The equipment that a kind of flow is weighed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107860446A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445160A (en) * | 2008-12-23 | 2009-06-03 | 中国科学院广州能源研究所 | Micro liquid fuel propulsion system used in micro-nano satellite |
| CN102183284A (en) * | 2011-04-14 | 2011-09-14 | 张广忠 | Liquid flow standard calibration device |
| US20130064738A1 (en) * | 2010-02-22 | 2013-03-14 | Stefan Berger | Method and device for the metered addition of fluids into reaction vessels |
| CN103101867A (en) * | 2006-06-13 | 2013-05-15 | 高级技术材料公司 | Liquid dispensing systems encompassing gas removal |
| CN207570645U (en) * | 2017-12-08 | 2018-07-03 | 上海悟道机电设备有限公司 | The equipment that a kind of flow is weighed |
-
2017
- 2017-12-08 CN CN201711298756.9A patent/CN107860446A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101867A (en) * | 2006-06-13 | 2013-05-15 | 高级技术材料公司 | Liquid dispensing systems encompassing gas removal |
| CN101445160A (en) * | 2008-12-23 | 2009-06-03 | 中国科学院广州能源研究所 | Micro liquid fuel propulsion system used in micro-nano satellite |
| US20130064738A1 (en) * | 2010-02-22 | 2013-03-14 | Stefan Berger | Method and device for the metered addition of fluids into reaction vessels |
| CN102183284A (en) * | 2011-04-14 | 2011-09-14 | 张广忠 | Liquid flow standard calibration device |
| CN207570645U (en) * | 2017-12-08 | 2018-07-03 | 上海悟道机电设备有限公司 | The equipment that a kind of flow is weighed |
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