CN110231173B - Micro flow supply measuring device - Google Patents
Micro flow supply measuring device Download PDFInfo
- Publication number
- CN110231173B CN110231173B CN201910470307.0A CN201910470307A CN110231173B CN 110231173 B CN110231173 B CN 110231173B CN 201910470307 A CN201910470307 A CN 201910470307A CN 110231173 B CN110231173 B CN 110231173B
- Authority
- CN
- China
- Prior art keywords
- supply
- container
- valve
- electronic scale
- pipeline
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
Abstract
In order to realize stable supply and measurement of a minute flow, the present invention provides a minute flow supply measuring device. The device comprises a constant pressure unit, a supply unit and a measuring unit; the constant pressure unit comprises an automatic pressure regulating device and a constant pressure balancing container; the inlet of the constant pressure balance container is connected with an air source through an automatic pressure regulating device, and the outlet of the constant pressure balance container is connected with a supply unit; the supply unit comprises a propellant supply container, an electronic scale, a first vibration reduction assembly and a supply pipeline, wherein an inlet of the propellant supply container is connected with an outlet of the constant-pressure balance container, and an outlet of the propellant supply container is connected with the measuring unit through the supply pipeline; the electronic scale is arranged below the propellant supply container, and the first vibration reduction assembly is arranged below the electronic scale; the measuring unit comprises a first capillary tube, a mass flow meter, a second capillary tube and a measuring pipeline which are sequentially connected, and a second filter, a second pneumatic control valve and a pneumatic discharge valve are arranged on the measuring pipeline; the inlet of the first capillary is connected to a supply line.
Description
Technical Field
The invention relates to an attitude control power system test device, in particular to a micro flow supply measuring device.
Background
A low-power electric arc heating anhydrous hydrazine engine widely applied to satellites is used for orbit control and attitude adjustment. The thrust magnitude of such engines is small, typically tens or hundreds of milli-newtons, and the corresponding propellant flow is small, typically measured in mg/s. Propellant flow control and measurement are key technologies in the development and application of an electric arc heating engine taking anhydrous hydrazine as a propellant. The common liquid flow measuring instruments such as an elliptic gear flowmeter, a turbine flowmeter, a float flowmeter and the like have large flow measuring range, and simultaneously, the requirements on the accurate measurement of the tiny liquid flow under special requirements are difficult to meet due to the leakage, friction, viscosity influence along with temperature change and the like.
The operating life of such engines often requires thousands or even tens of thousands of hours. In the engine development stage, the actual examination of the working time of the engine is required to be at least three times longer, the stable supply and measurement of the propellant are guaranteed under the condition, the test system is a great examination, the measurement error interference of the measurement equipment can cause great interference to the measurement result, the performance of the tested engine is required to be truly obtained, and the influence caused by the deviation of the test system is required to be reduced as much as possible.
At present, the small-flow measurement supply is in the research stage of engine performance schemes in laboratories, and the main principle is that a small-volume storage tank is placed on a high-precision electronic balance, the weight of the storage tank is measured by the electronic balance, and the average flow of the storage tank is obtained by dividing the weight difference value in a period of time by the time. The method is accurate for measurement in a short time. When the long-time measurement requirement is met, the liquid volume is reduced and the gas phase volume is increased along with the outflow of the liquid propellant in the storage tank, the extrusion pressure in the storage tank can continuously balance the influence of the increase of the gas phase cavity, and when the extrusion pressure is reduced, the actual supply flow can be gradually reduced. To avoid this phenomenon, the pressure in the storage tank should be kept at a stable value all the time in practice, and thus, an external air source is required to continuously supplement the pressure to the storage tank, thereby ensuring the stability of the flow entering the engine. Correspondingly, under the measure, due to the fact that gas and liquid have different densities, external gas enters, the mass of the gas in the storage box is increased, the flow calculated by the indication value of the electronic scale deviates from the actual flow to some extent, and the actual flow can be obtained only by density correction. Meanwhile, the precision requirement of the electronic scale is extremely high in the measuring mode, the resolution ratio of the electronic scale directly influences the measuring result, the technical conditions of the existing electronic scale are difficult to meet the requirements of large measuring range, high precision and low cost, and in order to guarantee the requirement of measuring precision on the precision of the electronic scale, the measuring range can only be reduced, so that the volume of the storage tank is limited, the storage tank can only be suitable for measuring in a short time, and the storage tank needs to be filled repeatedly for long-time measurement.
Disclosure of Invention
In order to realize stable supply and measurement of a minute flow, the present invention provides a minute flow supply measuring device, which is a device capable of maintaining stable supply of a flow for a long time and performing accurate measurement.
The technical scheme of the invention is as follows:
a micro flow supply measuring device comprises a constant pressure unit, a supply unit and a measuring unit; the constant pressure unit comprises an automatic pressure regulating device and a constant pressure balancing container; the inlet of the constant pressure balance container is connected with an air source through an automatic pressure regulating device, the outlet of the constant pressure balance container is connected with a supply unit, a pressure sensor and a first air inlet valve are arranged on a pipeline connecting the automatic pressure regulating device and the constant pressure balance container, and a first isolating valve is arranged on a pipeline connecting the automatic pressure regulating device and the air source; the supply unit comprises a propellant supply container, an electronic scale, a first vibration reduction assembly and a supply pipeline, wherein an inlet of the propellant supply container is connected with an outlet of the constant-pressure balance container, an outlet of the propellant supply container is connected with the measuring unit through the supply pipeline, and a first filter and a first pneumatic control valve are arranged on the supply pipeline; the electronic scale is arranged below the propellant supply container and used for weighing the weight of the propellant supply container, and the first vibration reduction assembly is arranged below the electronic scale and used for isolating interference of ground vibration on the electronic scale; the measuring unit comprises a first capillary tube, a mass flow meter, a second capillary tube and a measuring pipeline which are sequentially connected, and a second filter, a second pneumatic control valve and an electromagnetic discharge valve are arranged on the measuring pipeline; the inlet of the first capillary is connected to a supply line.
Further, first damping subassembly is including the electronic scale mounting panel, first damping piece, the damping piece mounting panel that from top to bottom sets gradually, the electronic scale mounting panel sets up in the below of electronic scale for support the electronic scale, a plurality of first damping pieces set up between electronic scale mounting panel and damping piece mounting panel, are used for keeping apart the vibration that comes from ground.
Furthermore, be provided with first output valve on the pipeline that constant pressure balance container and propellant supply container are connected, the top of constant pressure balance container is provided with second isolating valve and first discharge valve, and the parallelly connected second discharge valve that is equipped with on the import pipeline of first admission valve.
Further, a second output valve is arranged at the bottom of the propellant supply container, and a second air inlet valve, a safety valve, a pressure measuring isolation valve and a third air outlet valve are arranged at the top of the propellant supply container.
Furthermore, a plurality of second vibration reduction blocks are arranged between the mass flowmeter and the flowmeter installation base and used for isolating the interference of ground vibration on flowmeter vibration.
Further, the measuring unit further comprises a flowmeter mounting plate, a plurality of adjusting bolts and an adjusting bolt base plate; the flowmeter mounting panel sets up in mass flow meter's below for support mass flow meter, adjusting bolt foundatin plate sets up in second damping piece top, adjusting bolt respectively with flowmeter mounting panel, adjusting bolt foundatin plate threaded connection for adjust mass flow meter's position.
Further, the propellant supply container and the constant pressure balance container are connected through a stainless steel metal hose.
Furthermore, the constant-pressure balance container is connected with the high-precision automatic pressure regulating device through a stainless steel pipe.
Further, the first capillary and the second capillary are phi 3 x 0.5 stainless steel tubes.
Further, the mass flow meter is a Coriolis mass flowmeter of type E + H83A 01.
Compared with the prior art, the invention has the following technical effects:
1. the invention utilizes the principle that the fluid mechanics can ensure stable supply flow when maintaining constant extrusion pressure under the condition of fixed state of a pipeline system, and balances the pressure instability caused by the outflow of liquid propellant in a supply container through a large-volume balance container, wherein the larger the volume of the balance container is, the larger the pressure stability which can be maintained by the balance container is. The pressure in the balance container is maintained by the automatic pressurizing device, so that the extrusion pressure of the propellant is always ensured to be in a stable state, and the stability of the supply flow of the system is ensured.
2. The electronic scale only estimates the propellant amount in the storage tank without reaching the precision of the electronic scale, so that the electronic scale with a large measuring range can be used, the storage tank with a large volume can be used for supplying the propellant, long-time supply is realized, the possibility is provided for long-range service life examination tests of the engine, other interferences caused by the increase of the gas phase volume in the storage tank along with the outflow of the liquid propellant do not need to be accurately calculated, and errors between theoretical calculation and actual calculation are reduced.
3. The invention utilizes the mass flowmeter to measure the flow, has the characteristics of intuitive flow measurement and small external interference factor, and simultaneously reduces the requirements of other measurement modes on the precision of the electronic scale and the cost of a test system.
4. The invention integrates the flowmeter and the inlet and outlet pipelines by using an integral flowmeter fixing support, isolates the vibration transmitted by a propellant supply pipeline by using a spiral capillary tube, and isolates the interference of the vibration on the measurement precision of the flowmeter by adding an elastic gasket below the flowmeter fixing surface.
5. The electronic scale foundation utilizes the vibration reduction block to carry out vibration isolation, thereby effectively reducing the influence of ground vibration and the like on the measurement precision of the electronic scale.
6. The Coriolis mass flowmeter is a mature industrial product, is convenient for engineering application, has strong technical resources for analyzing and processing various faults, is convenient and quick, and has strong substitution. When the system is built, the interference of external interference such as test equipment operation vibration, propellant flow process, environmental interference vibration and the like on the output signal of the flowmeter is only needed to be solved.
Drawings
FIG. 1 is a schematic view of a micro flow supply measurement device according to the present invention;
FIG. 2 is a schematic view of the basic structure of the electronic scale of the present invention;
FIG. 3 is a schematic view of the flowmeter mounting infrastructure of the present invention;
FIG. 4 is a view showing the structure of a first capillary of the present invention.
Reference numerals: 1-an engine, 2-an electromagnetic exhaust valve, 3-a second pneumatic control valve, 4-a second filter, 5-a first capillary tube, 6-a mass flow meter, 7-a supply line, 8-a second capillary tube, 9-a propellant supply container, 10-a stainless steel metal hose, 11-a constant pressure balance container, 12-an automatic pressure regulating device, 13-an electronic scale, 14-an electronic scale mounting plate, 15-a first vibration damping block, 16-a vibration damping block mounting plate, 17-a flowmeter mounting base, 18-a second vibration damping block, 19-an adjusting bolt base plate, 20-an adjusting bolt, 21-a flowmeter mounting plate, 22-a pipeline fixing point, 23-a pressure sensor, 24-a first air intake valve, 25-a first isolation valve, 26-first filter, 27-first pneumatic control valve, 28-measuring line, 29-first output valve, 30-second isolation valve, 31-first exhaust valve, 32-second exhaust valve, 33-second output valve, 34-second intake valve, 35-safety valve, 36-pressure measuring isolation valve, 37-third exhaust valve.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The invention provides a flow supply measuring device for a long-time test of a low-power arc heating anhydrous hydrazine engine. The device maintains the pressure in the constant-pressure balance container through the automatic pressure regulating device, so that stable supply of micro flow is realized, the flow data is measured through the mass flowmeter, and the data is easy to visually acquire; the device ensures the accuracy of the measurement of the flowmeter by isolating the interference factors influencing the measurement accuracy of the flowmeter through the capillary tube, the vibration reduction block and the like. Meanwhile, the flow measurement does not depend on the electronic scale, the requirement on the precision of the electronic scale is lowered, and the storage capacity of the storage tank is improved, so that the capacity of long-time supply is realized.
As shown in fig. 1 to 4, the minute flow rate supply measuring device provided by the present invention includes a constant pressure unit, a supply unit, and a measuring unit.
The constant pressure unit comprises an automatic pressure regulating device 12 and a constant pressure balancing container 11; an inlet of the constant pressure balance container 11 is connected with an air source through an automatic pressure regulating device 12, an outlet of the constant pressure balance container is connected with a supply unit, a pressure sensor 23 and a first air inlet valve 24 are arranged on a pipeline connecting the automatic pressure regulating device 12 and the constant pressure balance container 11, and a first isolating valve 25 is arranged on a pipeline connecting the automatic pressure regulating device 12 and the air source; the constant pressure balance container 11 is connected with the high precision automatic pressure regulating device 12 through a stainless steel pipe.
The supply unit comprises a propellant supply container 9, an electronic scale 13, a first damping assembly and a supply pipeline 7, wherein an inlet of the propellant supply container 9 is connected with an outlet of a constant pressure balance container 11, a bottom outlet of the propellant supply container is connected with a measuring unit through the supply pipeline 7, the supply pipeline 7 is a stainless steel pipe, and a first filter 26, a first pneumatic control valve 27 and a measuring sensor for pressure and other requirements are arranged on the supply pipeline 7. Propellant supply container 9(50L) is placed on electronic scale 13, electronic scale 13 is used for weighing propellant supply container 9, and electronic scale 13 is arranged on a first vibration damping component, and first vibration damping component is fixed on the ground and is used for isolating interference of ground vibration on electronic scale 13. First damping subassembly is including the electronic scale mounting panel 14, first damping piece 15, the damping piece mounting panel 16 that from top to bottom set gradually, and electronic scale mounting panel 14 sets up in the below of electronic scale 13 for support electronic scale 13, a plurality of first damping pieces 15 set up between electronic scale mounting panel 14 and damping piece mounting panel 16, are used for keeping apart the vibration that comes from ground, guarantee that electronic scale 13 registration does not receive external disturbance.
The propellant supply container 9 in the supply unit is used for propellant storage and supply, the constant pressure equalization container 11 is used for pressurized helium storage, for constant pressure supply to the propellant supply tank, and provides a stable supply pressure to the propellant supply container 9, thereby ensuring a stable supply of propellant flow. After the constant pressure balance container 11 is connected with the propellant supply container 9 through the stainless steel metal hose 10, a larger gas phase cavity is pressurized for the propellant supply storage tank. The high-precision automatic pressurizing device is used for supplying and measuring the pressure in the constant-pressure balance container 11 and maintaining the pressure in the constant-pressure balance container 11. The electronic scale 13 is used for weighing the weight of the propellant supplied to the storage tank and estimating the residual amount of the propellant in the storage tank; ignoring the weight of the gas phase volume increase, the propellant remaining in the tank is estimated to prevent propellant depletion. When the high-precision electronic scale 13 is selected, the average flow speed of the propellant in a period of time can be calculated more accurately according to the gas-liquid phase density difference and the gas phase increment. In the working process, due to the continuous outflow of the propellant, the gas-liquid two-phase volume in the propellant supply container 9 is continuously changed, the supply pressure needs to balance the change of the volume, the self micro leakage rate of the container and the supply system is reduced continuously, and the pressure in the constant-pressure balance container 11 is kept through the external high-precision automatic pressure regulating device 12.
The measuring unit comprises a first capillary tube 5, a mass flow meter 6, a second capillary tube 8 and a measuring pipeline 28 which are connected in sequence, and a second filter 4, a second pneumatic control valve 3 and an electromagnetic drain valve 2 are arranged on the measuring pipeline 28; the inlet of the first capillary 5 is connected to a supply line 7. The mass flow meter 6 is a coriolis force mass flow meter of type E + H83 a01, and is arranged on the propellant supply line 7 for measuring the real-time flow rate of the propellant.
The mass flow meter 6 used in the present invention is a coriolis force mass flow meter. The flowmeter has the advantages of high precision and real-time display, but the influence of pipeline vibration on the measurement precision is considered in the application process. Taking the model E + H83A 01 as an example, the maximum flow rate was 5.5556g/s, and the zero point stability was 0.2 mg/s. Meanwhile, the calibration pressure and the process pressure difference have no influence on the measurement precision. When the temperature at zero correction is different from the process temperature, the measurement error caused by the temperature is + -0.0002%/deg.C of the full scale value. Calculated according to the lower limit of the flow of the general rated working condition of 40 mg/s. The repeatability error is +/-0.39% at 40mg/s, so the maximum measurement error is +/-0.794%, which is far less than the error of 2% measured by a general electronic scale 13, and the largest factor influencing the measurement accuracy of the Coriolis flowmeter is external vibration interference, so the invention is provided with a plurality of second damping blocks 18 below the mass flowmeter 6.
In addition, a section of spiral capillary tube is arranged at the inlet and the outlet of the mass flowmeter 6 and is used for stabilizing the pressure and the flow. The capillary tube and the flowmeter are integrated. A flowmeter mounting plate 21, a plurality of adjusting bolts 20, an adjusting bolt base plate 19 and a plurality of second vibration reduction blocks 18 are arranged between the mass flowmeter 6 and the flowmeter mounting foundation 17 and used for isolating the interference of ground vibration to flowmeter vibration. Flowmeter mounting panel 21 sets up in mass flow meter 6's below for fixed stay mass flow meter 6, adjusting bolt foundatin plate 19 sets up in second damping piece 18 top, adjusting bolt 20 respectively with flowmeter mounting panel 21, 19 threaded connection of adjusting bolt foundatin plate for highly adjusting mass flow meter 6, guarantee that flowmeter business turn over pipeline is connected straightly with supply line 7. Second damping mass 18 isolates certain vibrations in the ground from being transmitted to mass flow meter 6. The first capillary 5 and the second capillary 8 are phi 3 multiplied by 0.5 stainless steel tubes, are arranged at the inlet and outlet pipe sections of the flowmeter and are firmly fixed, so that the influence of the vibration of the supply pipeline 7 on the measurement of the flowmeter is reduced, meanwhile, the flow resistance of the capillary pressurizing supply system pipeline is improved, and the robustness of the system on the pressurizing pressure is improved.
Manual stop valves and program control valves are mostly adopted in the system, and the valve setting is comprehensively considered from the aspects of safety, practicability and economy. The automatic pressure regulating device 12 is an independent module, and a first isolation valve 25 of an air source inlet device is arranged below the automatic pressure regulating device, and the valve is a manual isolation valve and used for cutting off the air source in an emergency. The bottom of the constant-pressure balance container 11 is provided with a first output valve 29, the top is provided with a first air inlet valve 24, a second isolation valve 30 and a first exhaust valve 31, the first output valve 29, the first air inlet valve 24 and the second isolation valve 30 are manual stop valves, the independent sealing performance of the container is guaranteed, the first air inlet valve 24 and the second isolation valve 30 are in a normally open state, a second exhaust valve 32 is arranged on a pipeline in front of the first air inlet valve 24, and the second exhaust valve 32 is a manual or program-controlled exhaust valve, so that exhaust control under different states is facilitated. The bottom of the propellant supply container 9 is provided with a second output valve 33, the top of the propellant supply container is provided with a second air inlet valve 34, a safety valve 35, a pressure measuring isolation valve 36 and a third exhaust valve 37, the second output valve 33, the second air inlet valve 34 and the pressure measuring isolation valve 36 are manual stop valves, the independent sealing performance of the container is guaranteed, the second air inlet valve 34 and the pressure measuring isolation valve 36 are in a normally open state, the safety valve 35 guarantees safe use of the container, and the supply pipeline 7 is provided with a manual stop valve and a program control valve for preparation and process control in a test process.
The working process of the device comprises the following steps: and after the system is prepared, the propellant in the pipeline is filled, and the filling process is fully exhausted by a technological method. When the engine 1 starts to work, the measuring system is started, and the data of the flowmeter and the data of the electronic scale 13 are recorded. When the propellant is continuously supplied, the automatic pressure regulating device 12 continuously works to ensure that the pressure in the constant pressure balancing container 11 is in a stable state, thereby ensuring that the propellant is supplied at a stable flow rate. The measuring system records the output signal of the flowmeter in real time, displays the flow parameter and provides visual flow data.
Claims (8)
1. A micro flow supply measuring device, characterized by: comprises a constant pressure unit, a supply unit and a measuring unit;
the constant pressure unit comprises an automatic pressure regulating device (12) and a constant pressure balancing container (11); an inlet of the constant pressure balance container (11) is connected with an air source through an automatic pressure regulating device (12), an outlet of the constant pressure balance container is connected with a supply unit, a pressure sensor (23) and a first air inlet valve (24) are arranged on a pipeline connecting the automatic pressure regulating device (12) and the constant pressure balance container (11), and a first isolating valve (25) is arranged on a pipeline connecting the automatic pressure regulating device (12) and the air source;
the supply unit comprises a propellant supply container (9), an electronic scale (13), a first damping assembly and a supply pipeline (7), wherein an inlet of the propellant supply container (9) is connected with an outlet of the constant-pressure balance container (11), the outlet is connected with the measuring unit through the supply pipeline (7), and a first filter (26) and a first pneumatic control valve (27) are arranged on the supply pipeline (7); the electronic scale (13) is arranged below the propellant supply container (9) and is used for weighing the weight of the propellant supply container (9), and the first vibration damping assembly is arranged below the electronic scale (13) and is used for isolating the interference of ground vibration on the electronic scale (13);
the measuring unit comprises a first capillary tube (5), a mass flow meter (6), a second capillary tube (8) and a measuring pipeline (28) which are sequentially connected, wherein a second filter (4), a second pneumatic control valve (3) and an electromagnetic discharge valve (2) are arranged on the measuring pipeline (28); the inlet of the first capillary (5) is connected with a supply pipeline (7);
the measuring unit further comprises a flowmeter mounting plate (21), a plurality of adjusting bolts (20) and an adjusting bolt base plate (19); the mass flowmeter is characterized in that the flowmeter mounting plate (21) is arranged below the mass flowmeter (6) and used for supporting the mass flowmeter (6), the adjusting bolt base plate (19) is arranged above the second vibration reduction block (18), and the adjusting bolt (20) is in threaded connection with the flowmeter mounting plate (21) and the adjusting bolt base plate (19) respectively and used for adjusting the position of the mass flowmeter (6);
first damping subassembly is including electronic scale mounting panel (14), first damping piece (15), damping piece mounting panel (16) that from top to bottom set gradually, electronic scale mounting panel (14) set up in the below of electronic scale (13) for support electronic scale (13), a plurality of first damping pieces (15) set up between electronic scale mounting panel (14) and damping piece mounting panel (16), are used for keeping apart the vibration that comes from ground.
2. The minute flow rate supply measuring device according to claim 1, characterized in that: the pipeline that constant pressure balance container (11) and propellant supply container (9) are connected is provided with first output valve (29), the top of constant pressure balance container (11) is provided with second isolating valve (30) and first exhaust valve (31), and parallelly connected second exhaust valve (32) that are equipped with on the import pipeline of first admission valve (24).
3. The minute flow rate supply measuring device according to claim 1 or 2, characterized in that: and a second output valve (33) is arranged at the bottom of the propellant supply container (9), and a second air inlet valve (34), a safety valve (35), a pressure measuring isolation valve (36) and a third air outlet valve (37) are arranged at the top of the propellant supply container.
4. The minute flow rate supply measuring device according to claim 3, characterized in that: and a plurality of second damping blocks (18) are arranged between the mass flowmeter (6) and the flowmeter installation base (17).
5. The minute flow rate supply measuring device according to claim 4, characterized in that: the propellant supply container (9) is connected with the constant pressure balance container (11) through a stainless steel metal hose (10).
6. The minute flow rate supply measuring device according to claim 5, characterized in that: the constant pressure balance container (11) is connected with the automatic pressure regulating device (12) through a stainless steel pipe.
7. The minute flow rate supply measuring device according to claim 6, characterized in that: the first capillary tube (5) and the second capillary tube (8) are phi 3 multiplied by 0.5 stainless steel tubes.
8. The minute flow rate supply measuring device according to claim 7, characterized in that: the mass flowmeter (6) is an E + H83A 01 type Coriolis mass flowmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910470307.0A CN110231173B (en) | 2019-05-31 | 2019-05-31 | Micro flow supply measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910470307.0A CN110231173B (en) | 2019-05-31 | 2019-05-31 | Micro flow supply measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110231173A CN110231173A (en) | 2019-09-13 |
| CN110231173B true CN110231173B (en) | 2021-02-26 |
Family
ID=67858312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910470307.0A Active CN110231173B (en) | 2019-05-31 | 2019-05-31 | Micro flow supply measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110231173B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588047B (en) * | 2021-08-04 | 2022-05-10 | 西安航天动力试验技术研究所 | Flowmeter calibration system and method for low-temperature propellant rocket engine |
| CN114383851B (en) * | 2021-12-31 | 2023-08-25 | 西安航天动力研究所 | Multi-hole synchronous collecting and weighing device and method for attitude and orbit control engine product |
| CN114383852B (en) * | 2021-12-31 | 2023-08-25 | 西安航天动力研究所 | Test device for automatically and synchronously collecting and clamping attitude and orbit control engine product |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354273B (en) * | 2008-07-17 | 2010-07-07 | 美新半导体（无锡）有限公司 | Method and device for measuring compound type gas flow |
| CN101509797B (en) * | 2009-03-20 | 2011-01-19 | 北京航空航天大学 | Fully elastic small amount of flow measuring device |
| 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 |
| CN104060649B (en) * | 2014-07-15 | 2016-03-30 | 四川嘉好变频供水设备科技有限公司 | A kind of Smart Remote network monitoring non-negative-pressure variable frequency constant pressure water supply equipment |
| CN109459255B (en) * | 2018-11-02 | 2021-10-26 | 北京航空航天大学 | Multipurpose pipeline supply system with replaceable cathode gas source and replaceable flowmeter |
| CN109342068A (en) * | 2018-12-13 | 2019-02-15 | 中科航空动力(株洲)装备制造研究院有限公司 | Fuel manifold device for testing flow |
-
2019
- 2019-05-31 CN CN201910470307.0A patent/CN110231173B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110231173A (en) | 2019-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110231173B (en) | Micro flow supply measuring device | |
| KR100418131B1 (en) | Flowmeter calibration system with statistical optimization technique | |
| CN1312466C (en) | Flexible wall permeameter for measuring coefficient of permeability | |
| CN202599485U (en) | A novel flow mass detection device | |
| CN113588047B (en) | Flowmeter calibration system and method for low-temperature propellant rocket engine | |
| CN103033315A (en) | Simple and efficient tank parallel- balance emission test system and method | |
| CN101625234B (en) | System and method for measuring true volume of gathered-state substances with gaps | |
| Jaiswal et al. | Design and development of a novel water flow measurement system | |
| CN219996296U (en) | Gas meter verification gas circuit system and gas flow error checking device | |
| CN202420769U (en) | Portable calibrating device of leak detector | |
| CN209945932U (en) | A test instrument for rock gas high pressure adsorption | |
| CN216815992U (en) | Filter integrality tester calibrating device | |
| RU2476830C2 (en) | Test setup for gas flowmeters/counters | |
| CN115876289A (en) | Calibration device of single-phase low-temperature fluid flowmeter | |
| KR20130141863A (en) | Flow rate measuring apparatus and method using differential pressure of variable control valve, and measurement method for inherent flow coefficient | |
| CN113670626B (en) | Test device for researching influence of bubbles in environmental factors on flow measurement | |
| RU2402002C1 (en) | Method of monitoring airtightness of hydraulic system filled with working medium for controlling temperature of manned spacecraft, fitted with hydropneumatic compensator of temperature change of volume of working medium | |
| RU2656765C1 (en) | Method of gas working medium balances determining in the tanks of the high pressure working system | |
| CN2462377Y (en) | Pipeline resistance coefficient measurer | |
| CN113447214A (en) | Dynamic measuring device and method for leakage rate of sealed cavity | |
| CN113135304A (en) | Fluid circuit filling method for calculating return displacement of liquid reservoir | |
| CN110895200B (en) | On-site calibration system for test bed of aerospace engine and calibration method for measurement and control unit of on-site calibration system | |
| RU50653U1 (en) | TEST STAND FOR MEASUREMENTS OF OIL CONSUMPTION AND AMOUNT OF FREE GAS USING THE EXISTING OIL ACCOUNTING DIAGRAM (OUN) AND TUBE-PISTON CHECKING INSTALLATION (TPU) | |
| CN114295085B (en) | Double-weighing volume and density measuring method | |
| CN211080423U (en) | Bench constant-pressure water supply device for diesel engine test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |