CN110082048A - A kind of detection of gas flow rate device - Google Patents
A kind of detection of gas flow rate device Download PDFInfo
- Publication number
- CN110082048A CN110082048A CN201910498860.5A CN201910498860A CN110082048A CN 110082048 A CN110082048 A CN 110082048A CN 201910498860 A CN201910498860 A CN 201910498860A CN 110082048 A CN110082048 A CN 110082048A
- Authority
- CN
- China
- Prior art keywords
- storage device
- liquid storage
- liquid
- gas
- measuring appliance
- 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.)
- Pending
Links
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
-
- 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
- G01F1/007—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring the level variations of storage tanks relative to the time
-
- 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
- G01F15/005—Valves
-
- 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
- G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Examining Or Testing Airtightness (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a kind of detection of gas flow rate devices, are suitable for air-leakage test, and the instantaneous volume flow rate of gas leakage and the occasion of the gas buildup leakage rate of a period of time are measured in detection especially in a high voltage state.The range of gas flowmeter is extremely difficult to small flow at present, if error can be bigger when measurement using the flowmeter of larger range.Such as the sealing performance of certain device is detected, such as certain natural gas facilities, hydrogen plant etc. have higher requirements to leakproofness.Gas piping can only be closed later by device elder generation inflating pressure at present, by detecting the air pressure change of the device, measure the leakage rate of gas indirectly, this method error is larger, is unable to satisfy high-precision requirement.The present invention is arranged liquid storage device, measuring appliance, fluid flowmeter, pressure gauge and pipeline and valve member and gas volume is replaced into liquid volume using gas drainage principle, solves air-tightness instantaneous leak amount and accumulation leakage rate high-acruracy survey problem.
Description
Technical field
The present invention relates to fields of measurement, more particularly to the flow of gas leakage is detected in air-leakage test.
Background technique
The measurement of small-flow gas is more difficult, if error can compare when gasmetry using the flowmeter of larger range
It is larger.Small flow high-precision gas volume cumulative measurement demand for a long time is also frequently encountered, being unable to satisfy market at present needs
It asks.So using gas flowmeter is not able to satisfy high-precision flow measurement request in air-leakage test.Certain dress is detected at present
The air-tightness set, solution are that the air pressure by closing gas piping to device inflating pressure, by detecting the device becomes
Change, measures the leakage rate of gas indirectly, not only error is larger for this method, can not detect the instantaneous flow of gas leakage, also not
Integrated flux can accurately be detected.Especially detect to air-tightness requirement higher device, for example, using the equipment of natural gas, hydrogen
Equipment etc., has higher requirements to air-tightness.
Summary of the invention
In view of the above requirements, the device of the invention passes through gas discharge liquor when measuring small-flow gas volume flow
The principle of body will measure the volume flow of gas, is replaced into the volume flow of measurement liquid, solves small-flow gas volume flow
The high-acruracy survey problem of amount also solves the problems of liquid flow of measurement cumulative volume.
To achieve the goals above, detection of gas flow rate device of the invention includes liquid storage device 1, measuring appliance 2, flowmeter 7,
Communicating valve 30；The liquid storage device 1 is provided with measurement liquid and exports 4, inlet 11, air inlet 12, liquid storage device communication port 13；The survey
The lower part of liquid storage device 1 is arranged in amount liquid outlet 4, and the top of liquid storage device 1 is arranged in liquid storage device communication port 13 and air inlet 12；It is described
Liquid storage device 1 is also provided with the intake valve 33 of connection air inlet 12, is connected to the liquid feed valve 32 of inlet 11；The liquid storage device 1 is at it
Top is also provided with exhaust valve 38.
The measuring appliance 2 is provided with measurement liquid entrance 5, measurement liquid outlet 14, measuring appliance communication port 15, gas outlet 16；
The top of measuring appliance 2 is arranged in the measuring appliance communication port 15, is connected by communicating valve 30 with liquid storage device communication port 13；It is described
The top of measuring appliance 2 is arranged in gas outlet 16；The top of measuring appliance 2 is arranged in the measurement liquid entrance 5；The air inlet 12,
Liquid storage device communication port 13, measuring appliance communication port 15 and gas outlet 16 are above the position of measurement liquid entrance 5 in vertical height；Institute
It states measurement liquid entrance 5 to be connected with measurement liquid outlet 4 by perfusion tube 6, the position of the measurement liquid entrance 5 is in vertical height
Higher than the position 2mm to 9000mm of measurement liquid outlet 4；The flowmeter 7 is arranged in perfusion tube 6；The measuring appliance 2 is provided with
The dump valve 34 of connection measurement liquid outlet 14, the air outlet valve 35 for connecting gas outlet 16.
Further, on the one hand, the measurement liquid outlet 4 is arranged on the wall of liquid storage device 1, and perfusion tube 6 is arranged in liquid storage
Except device 1.
Further, on the other hand, the inside of liquid storage device 1 is arranged in measurement liquid outlet 4, and one end of perfusion tube 6 connects
Measurement liquid outlet 4 is connect, the other end of perfusion tube 6 passes through the chamber wall of liquid storage device 1, leads to the outside of liquid storage device 1, enters with liquid is measured
Mouth 5 is connected.
Above-mentioned two aspect is also set moreover, 1 lower part of liquid storage device is provided with drain line and with the tapping valve 31 that it is connected
Reservoir pressure meter 23, liquid storage device liquidometer 20, safety valve 36 are set.
The measuring appliance 2 is provided with measuring appliance liquidometer 22, measuring appliance pressure gauge 24, safety valve 37, pressure gauge 8, described
The outlet side of air outlet valve 35 is arranged in pressure gauge 8.
The present invention compared with the existing technology has the advantages that
1. being suitable for the air-leakage test to certain devices, when measuring its gas leakage instantaneous flow, and measuring one section
Between the occasions such as gas buildup leakage rate.The sealing requirements for being particularly suitable for some pairs of gas mediums are higher and gas is certain
The detection of sealing device under pressure.
2. the present apparatus is using high-precision sensor and the valve of automatic control, so that measuring operation may be implemented to automate,
With preferable practicability.
Detailed description of the invention
Fig. 1 indicates detection of gas flow rate device of the perfusion tube except liquid storage device:
Fig. 2 indicates that perfusion tube passes through the detection of gas flow rate device inside liquid storage device.
Specific embodiment
A kind of detection of gas flow rate device illustrates two kinds of specific embodiments below.
First embodiment:
As shown in Figure 1.A kind of detection of gas flow rate device, including liquid storage device 1, measuring appliance 2, flowmeter 7, communicating valve 30；
The liquid storage device 1 is provided with measurement liquid and exports 4, inlet 11, air inlet 12, liquid storage device communication port 13；The measurement liquid outlet 4
The lower part of liquid storage device 1 is set, and the top of liquid storage device 1 is arranged in liquid storage device communication port 13 and air inlet 12；The liquid storage device 1 is also
The liquid feed valve 32 of intake valve 33, connection inlet 11 provided with connection air inlet 12；The liquid storage device 1 is also set up at an upper portion thereof
Exhaust valve 38.
The measuring appliance 2 is provided with measurement liquid entrance 5, measurement liquid outlet 14, measuring appliance communication port 15, gas outlet 16；
The top of measuring appliance 2 is arranged in the measuring appliance communication port 15, is connected by communicating valve 30 with liquid storage device communication port 13；It is described
The top of measuring appliance 2 is arranged in gas outlet 16；The top of measuring appliance 2 is arranged in the measurement liquid entrance 5；The air inlet 12,
Liquid storage device communication port 13, measuring appliance communication port 15 and gas outlet 16 are above the position of measurement liquid entrance 5 in vertical height；Institute
It states measurement liquid entrance 5 to be connected with measurement liquid outlet 4 by perfusion tube 6, the position of the measurement liquid entrance 5 is in vertical height
Higher than the position 2mm to 9000mm of measurement liquid outlet 4: the flowmeter 7 is arranged in perfusion tube 6；The measuring appliance 2 is provided with
The dump valve 34 of connection measurement liquid outlet 14, the air outlet valve 35 for connecting gas outlet 16.
The measurement liquid outlet 4 is arranged on the wall of liquid storage device 1, and perfusion tube 6 is arranged except liquid storage device 1.
1 lower part of liquid storage device is provided with drain line and with the tapping valve 31 that it is connected, and is also provided with liquid storage device pressure
Power meter 23, liquid storage device liquidometer 20, safety valve 36.
The measuring appliance 2 is provided with measuring appliance liquidometer 22, measuring appliance pressure gauge 24, safety valve 37, pressure gauge 8, described
The outlet side of air outlet valve 35 is arranged in pressure gauge 8.
Second embodiment:
As shown in Figure 2.A kind of detection of gas flow rate device, including liquid storage device 1, measuring appliance 2, flowmeter 7, communicating valve 30；
The liquid storage device 1 is provided with measurement liquid and exports 4, inlet 11, air inlet 12, liquid storage device communication port 13；The measurement liquid outlet 4
The lower part of liquid storage device 1 is set, and the top of liquid storage device 1 is arranged in liquid storage device communication port 13 and air inlet 12；The liquid storage device 1 is also
The liquid feed valve 32 of intake valve 33, connection inlet 11 provided with connection air inlet 12；The liquid storage device 1 is also set up at an upper portion thereof
Exhaust valve 38.
The measuring appliance 2 is provided with measurement liquid entrance 5, measurement liquid outlet 14, measuring appliance communication port 15, gas outlet 16；
The top of measuring appliance 2 is arranged in the measuring appliance communication port 15, is connected by communicating valve 30 with liquid storage device communication port 13；It is described
The top of measuring appliance 2 is arranged in gas outlet 16；The top of measuring appliance 2 is arranged in the measurement liquid entrance 5；The air inlet 12,
Liquid storage device communication port 13, measuring appliance communication port 15 and gas outlet 16 are above the position of measurement liquid entrance 5 in vertical height；Institute
It states measurement liquid entrance 5 to be connected with measurement liquid outlet 4 by perfusion tube 6, the position of the measurement liquid entrance 5 is in vertical height
Higher than the position 2mm to 9000mm of measurement liquid outlet 4；The flowmeter 7 is arranged in perfusion tube 6: the measuring appliance 2 is provided with
The dump valve 34 of connection measurement liquid outlet 14, the air outlet valve 35 for connecting gas outlet 16.
The inside of liquid storage device 1, one end connection measurement liquid outlet 4 of perfusion tube 6, infusion is arranged in measurement liquid outlet 4
The other end of pipe 6 passes through the chamber wall of liquid storage device 1, leads to the outside of liquid storage device 1, is connected with liquid entrance 5 is measured.
1 lower part of liquid storage device is provided with drain line and with the tapping valve 31 that it is connected, and is also provided with liquid storage device pressure
Power meter 23, liquid storage device liquidometer 20, safety valve 36.
The measuring appliance 2 is provided with measuring appliance liquidometer 22, measuring appliance pressure gauge 24, safety valve 37, pressure gauge 8, described
The outlet side of air outlet valve 35 is arranged in pressure gauge 8.
Explanation detects a certain device for the detection method of the air-tightness of air using the present apparatus below.It is generally required
For, in the stipulated time, it is specified that pressure under, air leakage rate must be within the scope of defined；Or air leakage is instantaneous
Flow must be within the scope of defined.The measurement method of gas volume is carried out, above-mentioned two mode is suitable for.It should be noted that
The test pressure of sealing device to be measured, it is necessary to less than the design pressure of liquid storage device 1 and measuring appliance 2.Pressure gauge 23 and 24 is for real
When detection container pressure, the safety of safety valve 36 and safety valve 37 to ensure container can avoid the occurrence of superpressure situation.Tool
Steps are as follows for bulk measurement:
1. the safe placement of device.Close tapping valve 31, liquid feed valve 32, intake valve 33, open dump valve 34, communicating valve 30,
Air outlet valve 35, exhaust valve 38.Air outlet valve 35 is connected with the pipeline of test system, and intake valve 33 is connected with the gas piping of test
It connects, liquid feed valve 32 is connected to water supply loop.
It,, also can be from when water level, which is increased to, can flow out from measurement liquid entrance 5 to 1 water storage of liquid storage device 2. open liquid feed valve 32
Dump valve 34 is discharged, and closes liquid feed valve 32 at this time, waits, until dump valve 34 is discharged without water, illustrates that measuring appliance 2 has been arranged
Sky closes dump valve 34.
3. all outlet ports pipeline of test system is closed, air outlet valve 35 is opened, closes exhaust valve 38.Air inlet is opened at a slow speed
Valve 33.By test system and two reservoirs, it is in measurement pressure.
4. closing communicating valve 30, measurement starts, and starts timing.
5. pressure can reduce when test system is free gas leakage, the pressure for forming liquid storage device 1 is greater than the pressure of measuring appliance 2
The water of liquid storage device 1 can be discharged into measuring appliance 2 from perfusion tube 6 by power, the pressure difference.Flowmeter 7 can detect the wink of water outlet at this time
Shi Liuliang.
6. between when measuring then, reading the pressure value of pressure gauge 8, intake valve 33 is closed, first opens communicating valve 30, after
Open exhaust valve 38.
Cumulative volume flow can be carried out integral calculation and be come out by the instantaneous flow data of flowmeter 7.Partial discharge meter
Has the function of the measurement of integrated flux.
If detecting air-tightness by pressure change, the method is as follows: when air pressure reaches specified value, air outlet valve 35 is closed,
By reading the pressure value variation of pressure gauge 8, air-leakage test is completed.
Claims (4)
1. a kind of detection of gas flow rate device, including liquid storage device (1), measuring appliance (2), flowmeter (7), communicating valve (30)；It is special
Sign is that the liquid storage device (1) is provided with measurement liquid and exports (4), inlet (11), air inlet (12), liquid storage device communication port (13)；
Measurement liquid outlet (4) setting is arranged in the lower part of liquid storage device (1), liquid storage device communication port (13) and air inlet (12) in liquid storage
The top of device (1)；The liquid storage device (1) is also provided with the intake valve (33) of connection air inlet (12), is connected to inlet (11)
Liquid feed valve (32)；The liquid storage device (1) is also provided with exhaust valve (38) at an upper portion thereof；
The measuring appliance (2) is provided with measurement liquid entrance (5), measurement liquid outlet (14), measuring appliance communication port (15), gas outlet
(16)；The measuring appliance communication port (15) is arranged on the top of measuring appliance (2), by communicating valve (30) with liquid storage device communication port
(13) it is connected；Top of gas outlet (16) setting in measuring appliance (2)；The measurement liquid entrance (5) is arranged in measuring appliance
(2) top；The air inlet (12), liquid storage device communication port (13), measuring appliance communication port (15) and gas outlet (16) are vertical
The position of measurement liquid entrance (5) is above in height；The measurement liquid entrance (5) passes through perfusion tube (6) with measurement liquid outlet (4)
It is connected, the position of measurement liquid entrance (5) is higher than the position 2mm to 9000mm of measurement liquid outlet (4) in vertical height；
The flowmeter (7) is arranged in perfusion tube (6)；The measuring appliance (2) is provided with the discharge of connection measurement liquid outlet (14)
Valve (34), the air outlet valve (35) for connecting gas outlet (16).
2. detection of gas flow rate device according to claim 1, characterized in that measurement liquid outlet (4) setting is being stored up
On the wall of liquid device (1), perfusion tube (6) is arranged except liquid storage device (1).
3. detection of gas flow rate device according to claim 1, characterized in that measurement liquid outlet (4) setting is being stored up
The other end of the inside of liquid device (1), one end connection measurement liquid outlet (4) of perfusion tube (6), perfusion tube (6) passes through liquid storage device (1)
Chamber wall, lead to the outside of liquid storage device (1), with measure liquid entrance (5) be connected.
4. according to detection of gas flow rate device described in claim (2) or claim (3), characterized in that the liquid storage
The tapping valve (31) that device (1) lower part is provided with drain line and is connected with it, is also provided with reservoir pressure meter (23), liquid storage
Device liquidometer (20), safety valve (36)；
The measuring appliance (2) is provided with measuring appliance liquidometer (22), measuring appliance pressure gauge (24), safety valve (37), pressure gauge
(8)；Outlet side of pressure gauge (8) setting in air outlet valve (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498860.5A CN110082048A (en) | 2019-06-11 | 2019-06-11 | A kind of detection of gas flow rate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910498860.5A CN110082048A (en) | 2019-06-11 | 2019-06-11 | A kind of detection of gas flow rate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110082048A true CN110082048A (en) | 2019-08-02 |
Family
ID=67423934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910498860.5A Pending CN110082048A (en) | 2019-06-11 | 2019-06-11 | A kind of detection of gas flow rate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110082048A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432667A (en) * | 2021-05-21 | 2021-09-24 | 中广核研究院有限公司 | Liquid level measuring device and method |
| CN114199722A (en) * | 2022-01-17 | 2022-03-18 | 石家庄高新区中正仪器仪表有限公司 | Online gas density measurement method |
-
2019
- 2019-06-11 CN CN201910498860.5A patent/CN110082048A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432667A (en) * | 2021-05-21 | 2021-09-24 | 中广核研究院有限公司 | Liquid level measuring device and method |
| CN114199722A (en) * | 2022-01-17 | 2022-03-18 | 石家庄高新区中正仪器仪表有限公司 | Online gas density measurement method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109724667B (en) | Method and system for detecting volume percentage of liquid in container and dispenser with system | |
| CN104596596B (en) | A kind of positive displacement micro liquid flowmeter and its application method | |
| CN203321939U (en) | Hydraulic cylinder internal leakage composite detection system | |
| CN110082048A (en) | A kind of detection of gas flow rate device | |
| CN208902348U (en) | A kind of safety valve device for detecting sealability | |
| CN2867309Y (en) | Inserting back flushing differential pressure liquid level transmitter | |
| CN205049302U (en) | High pressure valve sealing performance detection device | |
| CN209416441U (en) | A kind of gas volume measurement displacement apparatus | |
| CN109632036A (en) | A kind of gas volume measurement displacement apparatus | |
| CN208420321U (en) | Safety valve testing equipment | |
| CN209169777U (en) | Vacuum oil filling device for transformer | |
| CN210375568U (en) | Gas flow detection device | |
| CN207439669U (en) | A kind of valve Quick-action pressure-testing detection device | |
| CN203772508U (en) | Large-scale ventilating device air leakage rate detector | |
| CN108827561A (en) | Safety valve testing equipment | |
| CN210513586U (en) | Upstream pumping seal test system | |
| CN203869816U (en) | Equipment for detecting leakproofness of valve | |
| CN109681187B (en) | System and method for measuring single-hole gas micro-flow of coal seam based on accumulation principle | |
| CN211401280U (en) | Water leakage metering device for pipeline | |
| CN210774569U (en) | Sealing detection device of safety valve | |
| CN104005946B (en) | Reactor coolant pump flow speed controller | |
| CN218671642U (en) | Closed displacement device for two-phase metering | |
| CN202793929U (en) | Extreme pressure value detecting device for battery sealing piece, | |
| CN208371794U (en) | A kind of breast volume measurement device | |
| CN205861135U (en) | Inserted electromagnet flow meter |
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 |