CN110736503A - continuous gas measuring device - Google Patents
continuous gas measuring device Download PDFInfo
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- CN110736503A CN110736503A CN201910985876.9A CN201910985876A CN110736503A CN 110736503 A CN110736503 A CN 110736503A CN 201910985876 A CN201910985876 A CN 201910985876A CN 110736503 A CN110736503 A CN 110736503A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention discloses an continuous gas measurement device, which comprises a closed container, a second closed container, a gas inlet pipeline, a liquid discharge pipe and a gas outlet pipeline, wherein two measurement channels are arranged, the measurement channels can be switched by changing the valve direction of a three-way valve on the gas inlet pipeline and the gas outlet pipeline and the flow direction of the liquid discharge pipe, the structure is simple, the operation is convenient, the two measurement channels can be switched infinitely, the measurement can be continuously carried out, large-volume gas can be measured through accumulation, the measurement range of the container is not limited, the applicability is strong, the measurement connection time of different gases is short, the speed and the efficiency are high, a controller receives liquid level change information, switches the measurement channels timely, calculates the flow rate and the flow speed of the gas to be measured, the response speed is high, the measurement precision is high, aiming at the gas with small gas flow and more impurities, the influence of the impurities is reduced by arranging.
Description
Technical Field
The invention belongs to the field of metering, and particularly relates to an continuous gas measuring device.
Background
At present, there are many instruments and means for measuring gas, but there are requirements for gas flow rate and gas cleanliness, for example, vortex street flowmeter must require gas flow rate of 0.3m3The measurement can be carried out for more than h, the accuracy of the floater and the rotor flow meter is poor, and the soap film and the mass flow meter have higher requirements on gas purity and are easy to damage. The flow meter is difficult to realize the effect of containing more impurities and having smaller flowThe dissolved gas is measured accurately.
The invention discloses a gas flow measuring device and a measuring method, wherein constant-pressure gas is used for pushing liquid in a th closed container to flow into a second closed container, gas in the second closed container is pushed by the inflowing liquid to be discharged from a gas outlet pipeline, and the change of the liquid volume is converted according to the liquid level change in a th closed container or the second closed container, so that the accumulated volume flow and the flow rate of the gas discharged from the gas outlet pipeline are obtained.
Disclosure of Invention
In order to solve the problems, the invention provides continuous gas measurement devices which are simple in structure, convenient to operate, capable of automatically switching measurement passages, capable of continuously and accumulatively measuring gas, high in efficiency, capable of measuring gas with more impurities and small flow and strong in applicability.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
apparatus for continuously measuring gas comprises sealed container, second sealed container, gas inlet pipeline, liquid outlet pipe and gas outlet pipeline, wherein the gas inlet pipeline comprises th gas inlet pipe connected to th sealed container, second gas inlet pipe and main gas inlet pipe connected to the second sealed container, th gas inlet pipe/second gas inlet pipe is used for introducing gas to be measured to the region above the liquid level in the th sealed container/second sealed container, the th gas inlet pipe and second gas inlet pipe are communicated with the main gas inlet pipe through three-way valve, the liquid outlet pipe is connected with th sealed container and second sealed container and is used for transferring the liquid discharged by the pressure of gas to be measured in the th sealed container/second sealed container to the second sealed container/ th sealed container, the gas outlet pipeline comprises th gas outlet pipe connected to the th sealed container, the second gas outlet pipe and main gas outlet pipe connected to the second sealed container, the th gas outlet pipe is used for releasing the second sealed container/second sealed container, the liquid outlet pipe is used for receiving the transferred by the liquid level of the second sealed container, the liquid level transfer, the liquid outlet pipe is communicated with the main gas outlet pipe 3527, the main gas outlet pipe, the liquid outlet pipe is used for measuring the liquid level change, and the liquid outlet pipe for measuring the liquid flow rate change of the main gas outlet pipe, the , the main gas outlet pipe, the liquid outlet pipe is used for measuring the liquid outlet pipe, the liquid outlet pipe.
Preferably, the liquid discharge pipe comprises a forward liquid discharge pipe and a reverse liquid discharge pipe, a liquid outlet at the bottom of the -th closed container is connected with a liquid inlet at the top of the second closed container through the forward liquid discharge pipe, a liquid outlet at the bottom of the second closed container is connected with a liquid inlet at the top of the -th closed container through the reverse liquid discharge pipe, and the forward liquid discharge pipe/the reverse liquid discharge pipe is provided with a -th stop valve/a second stop valve.
Preferably, the system further comprises a liquid level detector or a liquid level switch for detecting and feeding back the liquid levels in the th closed container and the second closed container, and the switching of the measuring passage is performed when the liquid levels are lower than a set value.
And , connecting the liquid level detector or the liquid level switch with a controller, and controlling the valve to open and close according to the received liquid level information by the controller, so as to realize the switching of the measurement access, and accumulatively obtain the total gas volume and the real-time flow rate of the gas to be measured through software integrated control.
Preferably, the liquid contained in the th closed container or the second closed container is insoluble in the gas to be measured.
Preferably, the th closed container and the second closed container are provided with scales on the side surface or/and weighing parts on the bottom.
Preferably, a filtering component is arranged in the th closed container and the second closed container and is used for intercepting and collecting solid impurities in the gas to be detected.
The invention relates to a device for continuously measuring gas, which is characterized in that gas to be measured is introduced into closed container, which contains liquid insoluble with the gas to be measured, the liquid is extruded and discharged to closed container, the flow and flow rate of the gas are calculated by measuring the liquid level change or the weight change of the closed container, the device is provided with two measuring passages which can be infinitely switched and can continuously measure without being limited by the container range, concretely, the two closed containers are respectively connected with an air inlet pipe and an air outlet pipe, the air inlet pipes of the two closed containers are communicated with a main air inlet pipe through a three-way valve, the air outlet pipes of the two closed containers are communicated with a main air outlet pipe through a three-way valve, a liquid discharge pipe is arranged between the two closed containers, the gas to be measured is introduced into closed container filled with liquid, the liquid is pressurized to enter the second closed container through the liquid discharge pipe, the extruded air is discharged from the air outlet pipe of the second closed container, which is a measuring passage, when the liquid completely enters the second closed container, the liquid is pressurized, the liquid is introduced into the second closed container, the liquid is pressurized, the liquid is rapidly switched into the second closed container, the liquid inlet pipe, the liquid is continuously measured, the liquid is not pressurized, the liquid is quickly switched, the liquid is measured, the liquid level is measured, the liquid is not required to be measured, the , the liquid volume is measured, the liquid is not required to be measured, the continuous measuring passage is measured, the continuous measuring passage is.
The invention transmits the liquid level change in the closed container to the controller in real time through the liquid level detector or the liquid level switch, calculates the gas flow and the flow speed to be measured according to the liquid level change quantity in , and can accumulate to obtain the total gas quantity, in addition, in , when the liquid level reaches the lower limit, the valve direction of the three-way valve is changed, the gas path and the water path trend are adjusted, and the measuring passage is switched automatically in time, the liquid level detector or the liquid level switch can monitor the tiny liquid level change, the sensitivity is high, the response speed of the controller is fast, compared with the common flow meter, the invention can measure the gas with smaller flow, the precision is high, in addition, the gas flow and the flow speed can be obtained through the weight change obtained by the weighing part, when the closed container is provided with the liquid level detector/the liquid level switch or the weighing part at the same time, the accuracy of the measurement can be confirmed through the data comparison obtained by the two, the problem can be found in time, for the gas measurement with more impurity content, the flow meter is easy to be damaged mechanically, the component is stuck, the problems can be found, the invention has large flow area, the simple structure, the component is not influenced by the operation, but the impurity accumulation in the bottom of the container, the liquid discharge pipe can be prevented from entering the following two sealed container and the liquid discharge pipe, the invention can be used for the measurement, the detection, the liquid discharge pipe, the invention can be used for the invention, the invention can be used for.
The invention has the following beneficial effects:
the device for continuously measuring the gas comprises two closed containers, an air inlet pipeline, a liquid discharge pipe and an air outlet pipeline, the measuring passage can be switched by switching the valve direction of a three-way valve, the structure is simple, and the operation is convenient; the two measuring channels can be infinitely switched, so that the measurement is continuously carried out, the gas with large volume flow can be measured in an accumulated manner without being limited by the range of the container, and the applicability is strong; the measurement of different gases is short in connection time, fast and efficient. The controller receives the liquid level change information and switches the measurement channel in time, and calculates the flow and the flow velocity of the gas to be measured, so that the response speed is high, and the measurement precision is high. Aiming at the gas with small gas flow and more impurities, the influence of impurities is reduced and the measurement accuracy is improved by arranging the forward and reverse liquid discharge pipes and the filtering component.
Drawings
FIG. 1: the structure of embodiment 1 of the invention is schematically shown.
FIG. 2: the structure of embodiment 2 of the invention is schematically shown.
In the figure, 1- th closed container, 2-second closed container, 3- th three-way valve, 4-second three-way valve, 5- th stop valve, 6-second stop valve, 7-two-way liquid discharge pipe, 31- th air inlet pipe, 32-second air inlet pipe, 33-main air inlet pipe, 41- th air outlet pipe, 42-second air outlet pipe, 43-main air outlet pipe, 51-forward liquid discharge pipe and 61-reverse liquid discharge pipe.
Detailed Description
The invention is further illustrated in with reference to specific examples.
Example 1
apparatus for continuously measuring gas, as shown in fig. 1, comprising sealed container 1, second sealed container 2, gas inlet pipe, liquid outlet pipe and gas outlet pipe, wherein the gas inlet pipe comprises 1 gas inlet pipe 31 connected to 0 sealed container 1, second gas inlet pipe 32 connected to second sealed container 2 and main gas inlet pipe 33, the 2 gas inlet pipe 31/second gas inlet pipe 32 is used for introducing gas to be measured to the region above the liquid level in 3 sealed container 1/second sealed container 2, the 4 gas inlet pipe 31 and second gas inlet pipe 32 are connected to main gas inlet pipe 33 through three-way valve 3, the liquid outlet pipe comprises forward liquid outlet pipe 51 and reverse liquid outlet pipe 61, the bottom liquid outlet of sealed container 1 and the top liquid inlet of second sealed container 2 are connected through the forward liquid outlet pipe 51, the bottom liquid outlet of second sealed container 2 and the top liquid outlet of container 1 are connected through the reverse liquid outlet pipe 61, the forward liquid outlet pipe 51 is provided with 588 stop valve 356, the second sealed container 2 liquid level detector is connected to the top liquid level detector, the second liquid outlet pipe 2, the liquid level detector is connected to the top liquid level meter, the second liquid level meter is connected to the top of the main gas outlet pipe 2, the top liquid level meter is connected to the main gas outlet pipe 2, the main gas outlet pipe 2 is connected to the main gas outlet pipe 2, the liquid level meter is connected to the main gas outlet pipe 2, the top liquid level meter is connected to the main gas outlet pipe 2.
The device has the following specific working procedures:
the gas to be measured is hydrogen, th closed container 1 is filled with water, the second closed container 2 is kept empty, the th three-way valve 3 is left open, the second three-way valve 4 is right open, the th stop valve 5 is opened, the second stop valve 6 is closed, at this time, the th air inlet pipe 31, the forward liquid discharge pipe 51 and the th measuring passage formed by the second air outlet pipe 42 are communicated, the main air pipe 33 enters air, the gas enters the liquid level of the th closed container 1 from the th air inlet pipe 31, the water in the th closed container 1 is extruded by the gas and then is discharged to the second closed container 2 from the forward liquid discharge pipe 51 connected at the bottom, the gas in the second closed container 2 enters the main air outlet pipe 43 through the second air outlet pipe 42 and is discharged, the whole device can collect and record the total volume of the gas to be measured in the th closed container 1, and can calculate the gas flow rate in a certain period.
V = Δ V/Δ t or V = Δ m/Δ t
v- -flow velocity
Δ t- -a certain period of time that needs to be recorded
Δ V- -difference in volume of gas collected over a certain period of time
Δ m- -weight difference of tank drainage in a certain period of time
(the gas volume difference is calculated from the liquid level scale change and the cross-sectional area of the container, and the weight difference of the discharged water is recorded by a weighing part at the bottom of the container)
, the water in the sealed container 1 enters the second sealed container 2, the liquid level detector or the liquid level switch transmits the liquid level information to the controller, the controller automatically switches the three-way valve 3 to a right open circuit, the second three-way valve 4 is a left open circuit, the stop valve 5 is closed, the second stop valve 6 is opened, at this time, the second measurement passage formed by the second air inlet pipe 32, the reverse liquid discharge pipe 61 and the gas outlet pipe 41 is communicated, the main air pipe 33 enters air, the air enters the upper part of the liquid level in the second sealed container 2 through the second air inlet pipe 32, the water in the second sealed container 2 is extruded by the air and then is discharged to the sealed container 1 from the reverse liquid discharge pipe 61 connected at the bottom, the air in the sealed container 1 enters the main air outlet pipe 43 through the gas outlet pipe 41, the flow measurement of the gas to be measured entering the second sealed container 2 can be realized, the subsequent infinite switching can be carried out, and the measurement can.
Example 2
A device for continuously measuring gas, as shown in FIG. 2, the basic structure is the same as that of example 1, the difference is that the liquid discharge pipe is only two-way liquid discharge pipe 7, the pipe mouths at both ends of the two-way liquid discharge pipe 7 extend into the th sealed container 1 and the second sealed container 2, the specific extending depth can be adjusted according to the volume flow, when the gas to be measured enters the th sealed container 1, the two-way liquid discharge pipe 7 transfers the water squeezed out by the th sealed container 1 under pressure to the second sealed container 2 until the pipe mouths are level with the liquid level and reach the upper limit of single-path detection, then the gas to be measured enters the second sealed container 2 by changing the th three-way valve 3 and the second three-way valve 4 to switch the measuring path, the two-way liquid discharge pipe 7 transfers the water squeezed out by the second sealed container 2 under pressure to the th sealed container 1 until the pipe mouths are level with the liquid level, the switching of the measuring path is switched again, and the cycle is carried out, thus, the switching mode.
Example 3
The device structure and the working process are the same as those of embodiment 1, and the difference is that the sealed container 1 and the second sealed container 2 are internally provided with filter assemblies for intercepting and collecting solid impurities in the gas to be measured, so that the device is suitable for the gas to be measured with more impurities and small flow rate.
Example 4
The device structure and the working flow are the same as those of the embodiment 1, and the difference is that the gas to be detected is carbon dioxide, and the th closed container or the second closed container is filled with acetone.
This detailed description is to be construed as illustrative only and is not to be taken as limiting the invention, as any changes that may be made by a person skilled in the art after reading the present specification will be protected by the patent laws within the scope of the appended claims.
Claims (7)
1, kind of device of continuously surveying gas, including airtight container, second airtight container, air inlet pipe way, fluid-discharge tube and gas outlet pipe way, its characterized in that:
the air inlet pipeline comprises a air inlet pipe connected with a th closed container, a second air inlet pipe connected with a second closed container and a main air inlet pipe, wherein the th air inlet pipe/the second air inlet pipe is used for introducing gas to be detected to an area above the liquid level in the th closed container/the second closed container;
the liquid discharge pipe is connected with the th closed container and the second closed container and is used for transferring liquid discharged by the pressure of the gas to be detected in the th closed container/the second closed container to the th closed container;
the air outlet pipeline comprises a th air outlet pipe connected with a th closed container, a second air outlet pipe connected with a second closed container and a main air outlet pipe, wherein the th air outlet pipe/the second air outlet pipe is used for releasing air discharged by the second closed container/the th closed container due to receiving of transferred liquid;
the th air inlet pipe, the liquid discharge pipe and the second air outlet pipe form a th measuring passage, and the second air inlet pipe, the liquid discharge pipe and the th air outlet pipe form a second measuring passage;
and obtaining the flow and the flow rate of the gas to be measured by combining the weight change or the liquid level change of the th closed container or the second closed container in the liquid transfer process and the transfer time.
2. The continuous gas detection device as claimed in claim 1, wherein the liquid discharge pipe comprises a forward liquid discharge pipe and a reverse liquid discharge pipe, the th closed container bottom liquid outlet and the second closed container top liquid inlet are connected through the forward liquid discharge pipe, the second closed container bottom liquid outlet and the th closed container top liquid inlet are connected through the reverse liquid discharge pipe, and the forward liquid discharge pipe/the reverse liquid discharge pipe is provided with a th stop valve/a second stop valve.
3. The apparatus for continuously measuring gas as claimed in claim 1, further comprising a liquid level detector or a liquid level switch for detecting and feeding back the liquid levels in the th airtight container and the second airtight container, and switching the measuring passage when the liquid levels are lower than a set value.
4. The device for continuously measuring the gas as claimed in claim 3, wherein the liquid level detector or the liquid level switch is connected with a controller, the controller controls the opening and closing of the valve according to the received liquid level information, so that the switching of the measuring passage is realized, and the total gas volume and the real-time flow rate of the gas to be measured are obtained through software integrated control in an accumulated mode.
5. The apparatus for continuously measuring a gas as claimed in claim 1, wherein the liquid contained in the th airtight container or the second airtight container is insoluble to the gas to be measured.
6. The device for continuously measuring the gas as claimed in claim 1, wherein the th closed container and the second closed container are provided with scales on the side surface or/and weighing parts on the bottom.
7. The device for continuously measuring the gas as claimed in claim 1, wherein the th closed container and the second closed container are internally provided with filtering components for intercepting and collecting solid impurities in the gas to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910985876.9A CN110736503A (en) | 2019-10-17 | 2019-10-17 | continuous gas measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910985876.9A CN110736503A (en) | 2019-10-17 | 2019-10-17 | continuous gas measuring device |
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| CN110736503A true CN110736503A (en) | 2020-01-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447614A (en) * | 2021-06-21 | 2021-09-28 | 中国原子能科学研究院 | Method for measuring denitration rate in radioactive waste liquid calcination process |
-
2019
- 2019-10-17 CN CN201910985876.9A patent/CN110736503A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113447614A (en) * | 2021-06-21 | 2021-09-28 | 中国原子能科学研究院 | Method for measuring denitration rate in radioactive waste liquid calcination process |
| CN113447614B (en) * | 2021-06-21 | 2022-08-09 | 中国原子能科学研究院 | Method for measuring denitration rate in radioactive waste liquid calcination process |
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