CN106153162B - Gas flowmeter detection equipment - Google Patents
Gas flowmeter detection equipment Download PDFInfo
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- CN106153162B CN106153162B CN201610789131.1A CN201610789131A CN106153162B CN 106153162 B CN106153162 B CN 106153162B CN 201610789131 A CN201610789131 A CN 201610789131A CN 106153162 B CN106153162 B CN 106153162B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
Abstract
The invention provides a gas flowmeter detection device, which comprises a gas transmission module, a plurality of valve group modules connected with the gas transmission module and a detection module connected with the valve group modules, wherein the detection module comprises a plurality of flowmeters to be detected, and the valve group modules are connected with the flowmeters to be detected in a one-to-one correspondence manner. The invention aims to provide a gas flowmeter detection device which can simulate different environmental conditions and simultaneously detect the application range and stability of a plurality of flowmeters.
Description
Technical Field
The invention relates to the technical field of flow meter detection, in particular to a gas flow meter detection device.
Background
With the great use of household gas meters, the detection requirements of gas flow meters are continuously improved. However, the existing measurement equipment integrating gas flow, temperature, pressure, gas components and related flow calculation and volume correction is not complete.
The measurement of the household gas flowmeter in the gas flowmeter belongs to the flowmeter with small flow and relatively large wave amplitude, so that several parameters of gas flow, temperature, pressure and gas components need to be measured when the flowmeter is used for detection, then measurement signals are input into a flow computer or a volume corrector, calculation and compensation are carried out according to a flow calculation gas equation, and the standard condition flow is finally obtained.
Parameters such as the volume flow, the temperature, the pressure, the gas components and the like of gas standard conditions in the flow meter are detected, and the measurement accuracy of the flow meter can be influenced if any one of the parameters is inaccurate. At present, the influence of factors such as temperature, pressure and the like is not considered in the diaphragm meter of the household gas meter, and in fact, the working condition volume measurement is carried out, but how to calibrate the related flow meter needs a stable and reliable device for calibration. The existing flowmeter detection equipment cannot simulate different environmental conditions so as to detect the application range and stability of the flowmeter. In addition, in general, the existing flow meter can only detect one flow meter to be detected.
Disclosure of Invention
In view of the problems in the related art, an object of the present invention is to provide a gas flowmeter detecting apparatus capable of simulating different environmental conditions and simultaneously detecting the application range and stability of a plurality of flowmeters.
In order to achieve the above purpose, the present invention provides a gas flowmeter detection device, which includes a gas transmission module, a plurality of valve group modules connected to the gas transmission module, and a detection module connected to the valve group modules, wherein the detection module includes a plurality of flowmeters to be detected, and the valve group modules are connected to the flowmeters to be detected in a one-to-one correspondence manner.
According to one embodiment of the invention, the gas transmission module comprises a gas distribution module for containing the detection gas and a pressurizing module for pressurizing the detection gas, a gas inlet of the pressurizing module is communicated with a gas outlet of the gas distribution module, and gas outlets of the pressurizing module are connected with the valve group modules in a one-to-one correspondence manner.
According to one embodiment of the invention, the pressurizing module comprises a chamber and a self-weight sealing movable part for adjusting the pressure of the chamber, wherein the valve group module is connected with the chamber.
According to one embodiment of the invention, the pressurizing module comprises a plurality of chambers and a self-weight sealing movable part for synchronously adjusting the pressure of all the chambers, wherein the chambers are connected with the valve group modules in a one-to-one correspondence mode.
According to one embodiment of the invention, each chamber is provided with a self-weight sealing movable part, wherein the tops of all self-weight sealing movable parts are connected with each other through a connecting rod.
According to one embodiment of the invention, each chamber is configured as a flexible chamber, and all flexible chambers are pressure regulated synchronously via a common deadweight sealing active.
According to one embodiment of the invention, the detection module comprises a thermostatic cabinet in which the flowmeter to be tested is arranged.
According to an embodiment of the invention, the gas distribution system further comprises a data analysis module and a data acquisition feedback module, wherein the data analysis module is used for receiving data acquired by the data acquisition feedback module and analyzing the data to obtain parameters of the flowmeter to be measured, the data acquisition feedback module comprises a component feedback module and a temperature pressure feedback module, and the component feedback module feeds back gas components in the gas distribution module to the data analysis module; the temperature and pressure feedback module F feeds the temperature and the pressure in the detection module back to the data analysis module.
According to one embodiment of the invention, each valve bank module comprises at least one valve manifold; at least one standard flow meter is arranged in the detection module or the valve branch pipe.
According to one embodiment of the invention, at least one temperature and pressure sensor is respectively arranged at the inlet and the outlet of each flow meter to be measured.
The invention has the beneficial technical effects that:
in the gas flowmeter detection equipment, because the valve group modules are arranged, a plurality of flowmeters to be detected can be detected at the same time; the plurality of flowmeters to be detected are arranged in the same constant temperature cabinet, so that the temperature can be controlled, the flowmeters to be detected can be detected under different temperature conditions, and the detection of different flowmeters can be realized under the same temperature condition; the gas transmission module provides detection gas with stable pressure, and the flowmeter to be detected can be detected under different detection gas pressure conditions; in addition, the flow rate of the detected gas can be controlled through the valve group module, so that related parameters of the flowmeter to be detected under different flow rates can be obtained.
Drawings
FIG. 1 is a schematic diagram of a process flow of a gas flow meter instrumentation of the present invention;
FIG. 2 is a schematic view of a gas flowmeter detecting device of an embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of the construction of a pressurized tank according to an embodiment of the present invention;
FIG. 4 is a schematic view of a gas flowmeter detecting device according to embodiment 2 of the present invention;
fig. 5 is a schematic diagram of a gas flowmeter detecting device according to embodiment 3 of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, embodiment 1 of the present invention provides a gas flowmeter detection device, including a gas transmission module T, a plurality of valve group modules E connected to the gas transmission module T, and a detection module C connected to the valve group modules E, where the detection module C includes a plurality of flowmeters to be detected, and the valve group modules E are connected to the flowmeters to be detected in a one-to-one correspondence manner.
In the embodiment, as the plurality of valve group modules E are arranged, a plurality of flowmeters to be detected can be detected at the same time; in addition, the flow rate of the detected gas can be controlled through the valve group module E, so that the related parameters of the flowmeter to be detected under different flow rates can be obtained.
Further in accordance with an alternative embodiment of the present invention, the gas delivery modules T are connected in a one-to-one correspondence with the valve set modules E, and each valve set module E includes at least one valve manifold.
According to one embodiment of the invention, the gas transmission module T comprises a gas distribution module a for containing the detection gas and a pressurization module B for pressurizing the detection gas, a gas inlet of the pressurization module B is communicated with a gas outlet of the gas distribution module a, and gas outlets of the pressurization module B are connected with the valve group modules E in a one-to-one correspondence manner.
Further, in an optional embodiment, each valve group module E comprises a valve branch pipe and a valve connected to the valve branch pipe, and the valve is fully opened when opened and fully closed when closed; each valve group module E comprises a plurality of valve branch pipes which are connected in parallel.
In some alternative embodiments of the invention, the detection module C comprises a thermostatic cabinet 10, the flowmeter to be tested being arranged in the thermostatic cabinet 10.
Further, at least two to-be-measured flow meters which are connected with the valve group modules E in a one-to-one correspondence manner are arranged in the constant temperature cabinet 10; at least one standard flowmeter is arranged in the detection module C or the valve branch pipe.
It should be noted that the arrangement of at least one standard flow meter in the valve branch pipes means that, in each valve group module E, at least one standard flow meter is connected in series in the valve branch pipe. And each valve group module is respectively connected with different flowmeters to be tested.
It should be understood that the valve group module E is used to provide a stable gas flow for the flow meter to be measured, and therefore, when the valve is closed, the valve should be completely closed to prevent the gas to be measured from escaping, and when the valve is opened to allow the gas to be measured to enter the flow meter to be measured, the valve should be completely opened, so that the gas flow in each valve branch pipe can be equivalent to the standard flow of the valve branch pipe, the gas flow entering the flow meter to be measured is more accurate, and the accuracy of the gas flow entering the flow meter to be measured is prevented from being influenced because the valve is not completely opened.
In addition, in the above embodiment, by installing a plurality of flow meters to be tested in the same constant temperature cabinet 10, it is possible to control the temperature, detect the flow meters to be tested under different temperature conditions, and detect different flow meters under the same temperature conditions; the gas transmission module A provides detection gas with stable pressure, and the flowmeter to be detected can be detected under different detection gas pressure conditions
As shown in fig. 4, fig. 4 shows a schematic diagram of a gas flowmeter detecting device according to embodiment 2 of the present invention, and it should be understood that the present embodiment is different from the foregoing embodiments in that: the pressurizing module B includes a chamber 20, and a deadweight seal movable portion 12 for pressure-regulating the chamber 20, wherein the valve group module E is connected to the chamber 20. Other similar components are not described herein. It should also be understood that the various embodiments of the present invention are not independent, and can be combined with and replaced with each other in any form.
Further, as shown in fig. 4, the gas distribution module a comprises a bell jar 7 and at least one airbag 1, wherein the gas outlet of the bell jar 7 is connected to the gas inlet of the pressurizing module B.
As shown in fig. 5, according to embodiment 3 of the present invention, the pressurizing module B includes a plurality of chambers 20, and the self-weight seal moving portion 12 for pressure-adjusting all the chambers 20 simultaneously, wherein the gas outlets of the bell jar are connected to the gas inlets of the chambers 20 in a one-to-one correspondence, and wherein the plurality of chambers 20 are connected to the valve group module E in a one-to-one correspondence.
Further, as shown in fig. 5, the air distribution module a includes at least two bell jars, and each bell jar is provided with at least one airbag 1.
Referring to fig. 3, according to an embodiment of the present invention, each chamber 20 is provided with a self-weight seal movable portion 12, respectively, wherein the tops of all the self-weight seal movable portions 12 are connected to each other by a link.
Alternatively, each chamber 20 is configured as a flexible chamber, and all the flexible chambers are pressure-regulated synchronously via a common deadweight seal movable portion 12.
Further, according to an embodiment of the present invention, all the pressurized cans 20 are constructed as independent chambers, and a gland is provided to an open end of each pressurized can 20, respectively, wherein tops of all the glands are connected to each other by a connecting rod.
Alternatively, in another embodiment of the present invention, all pressurized tanks 20 are configured as independent flexible chambers, and all flexible chambers are pressurized via a common gland to synchronously perform pressure regulation. Thus, the plurality of pressurized tanks 20 simultaneously regulate the output pressure through the same set of self-weight seal movable portions 12. This ensures that the output pressure of the respective pressurized tanks 20 is the same, i.e. that the detection of different components, temperatures, and flow rates at the same pressure is ensured.
As shown in fig. 2, in embodiment 1 of the present invention, an airbag 1 is disposed inside a bell jar; alternatively, in embodiment 3 shown in fig. 5, the airbag 1 is disposed outside the bell jar.
For example, in embodiment 1 shown in fig. 2, the airbag 1 is disposed inside the bell jar 7 or 13 and connected to the pressurizing module B after being connected in parallel. Further, the airbag 1 may be provided with a gas discharge port connected to the bell jar 7 or 13, and the gas in the airbag 1 may be delivered to the bell jar 7 or 13 for storage. Alternatively, in embodiment 3 shown in fig. 5, the airbag 1 is connected to the pressurizing module B in series with the bell jar 7 or 13. In an alternative embodiment of the invention, the gas meter detection device may comprise two gas bags 1 connected to a bell 7 or 13 respectively. In the above embodiment, the gas can be proportioned according to the composition ratio of the detected gas, and the proportioned gas can directly enter the subsequent system (in the pressurizing module B) or can be temporarily stored in the bell jar 7 or 13 of the gas distribution module a.
As shown in fig. 2 to 5, according to some embodiments of the invention, the air distribution module a comprises at least two bell jars 7 and 13, wherein the bell jars are connected in a one-to-one correspondence with all pressurized tanks 20. For example, in embodiment 1 shown in fig. 2, the bell jar 7 and the bell jar 13 are connected to two pressure tanks 20, respectively. That is to say, the two pressure tanks 20 are respectively connected to two independent branches, and during the experiment, different detection gases can be used to detect the flow meters to be detected with the same or different models.
In one embodiment of the invention, as shown in fig. 3, multiple pressurized tanks 20 simultaneously regulate output pressure through the same set of self-weight seal events 12. This ensures that the output pressure of the respective pressurized tanks 20 is the same, i.e. that the detection of different components, temperatures, and flow rates at the same pressure is ensured.
According to one embodiment of the invention, each chamber 20 is provided with a discharge dispersion port 21 communicating with a one-to-one correspondence of bell jars. In the event of a system failure, the test gas in the tank may be delivered to the bell jar through the discharge dispersion port 21.
According to one embodiment of the invention, the gas outlet of the detection module C is connected to a gas reservoir 6. Thus, the detection gas can enter the gas storage tank 6 for centralized collection and treatment after passing through the detection module C.
Alternatively, in one embodiment of the invention, the gas outlet of the detection module C may also be in communication with the bell jar 7 and/or 13. In this way, the detection gas can flow back to the bell jar 7 or 13 of the gas distribution module A after passing through the detection module C according to specific conditions to continue the experiment. Further, the gas tank 6 may be configured to have at least two chambers connected to the bell jar 7 and the first valve train module and the bell jar 13 and the second valve train module, respectively.
It should be understood that, for example, in embodiment 1 as shown in fig. 2, the bell jar may be constructed in plural to realize the multi-component alignment experiment. Alternatively, as in example 2 shown in fig. 4, a bell jar 7 may be provided, which enables comparative experiments with multiple tables of the same gas composition.
As shown in fig. 1, according to an embodiment of the present invention, the present invention further includes a data analysis module D and a data acquisition feedback module, where the data analysis module D is configured to receive data acquired by the data acquisition feedback module and analyze the data to obtain parameters of the flow meter to be measured, where the data acquisition feedback module includes a flow data acquisition module E, a component feedback module G and a temperature pressure feedback module F, where the component feedback module G feeds back gas components in the gas distribution module a to the data analysis module D; the temperature and pressure feedback module F feeds the temperature and the pressure in the detection module C back to the data analysis module D.
According to one embodiment of the invention, the parameters include one or more of flow range, pressure loss, flow versus temperature and pressure fluctuation range and accuracy of the flow meter under test.
According to one embodiment of the invention, each valve group module E comprises at least one valve manifold; at least one standard flow meter is arranged in the detection module or the valve branch pipe.
According to one embodiment of the invention, the valve group module E comprises a valve branch pipe and a valve connected to the valve branch pipe, wherein the valve is completely opened when opened and completely closed when closed; and the inlet and the outlet of each flowmeter to be measured are respectively provided with at least one temperature and pressure sensor.
That is, in the above-described embodiment, the temperature pressure sensor, the flow meter to be measured, and the other temperature pressure sensor are connected in series in this order in the constant temperature cabinet 10 in the flow direction of the gas to be measured. Therefore, the temperature and the pressure of the detection gas to be detected before and after entering the flowmeter to be detected can be respectively measured by the temperature and pressure sensors positioned at the upstream and the downstream of the flowmeter to be detected, and the pressure loss condition of the flowmeter to be detected can be obtained.
According to one embodiment of the present invention, the valve group module E includes a valve branch pipe 3 or 16 and a valve connected to the valve branch pipe 3 or 16, and the valve is fully opened when opened and fully closed when closed.
As shown in fig. 2, according to embodiment 1 of the present invention, a flow meter detecting apparatus includes at least: the flow meter comprises a first valve group module and a first to-be-measured flow meter 5 connected with the first valve group module; and a second valve group module and a second flow meter 19 to be tested connected with the second valve group module. In this way, the detection gas output from the first valve group module enters the first to-be-detected flow meter 5 through the temperature and pressure sensor 4 and is discharged out of the detection module C through the other temperature and pressure sensor 4; the detection gas output from the second valve group module enters the second flowmeter 19 to be detected through the temperature and pressure sensor 18 and is discharged out of the detection module C through the other temperature and pressure sensor 18, and the measurement processes of the two flowmeters to be detected are independent of each other and do not interfere with each other.
Referring again to fig. 2, according to embodiment 1, each valve group module E includes a valve branch pipe and valves connected to the valve branch pipe, wherein a standard flow meter is connected in series in the valve branch pipe of any valve group module E. In the above embodiment, the standard flowmeter is connected in series in only one valve branch pipe, and the other branch pipes are calibrated according to the standard flowmeter, and the detection of different flow rates is realized by opening the valve in the test process.
Further, the first valve group module comprises a plurality of first valve branch pipes 3 connected in parallel, and one of the first valve branch pipes 3 is connected with a first standard flow meter 11 in series; the second valve group module comprises a plurality of second valve branch pipes 16 connected in parallel, and a second standard flowmeter 17 is connected in series with one of the second valve branch pipes 16.
According to an alternative embodiment of the invention, the valve is configured as an explosion-proof pneumatic valve, the valve branch pipe is configured as a fixed pipeline, the flow passing through each valve group module E is fixed or can be measured, and the detection of different flows of the flowmeter to be detected can be realized through a full-open valve in the test process.
In each experiment, the same type of valve branch pipe is installed in the valve group module E according to the measuring range and the precision of the flowmeter to be measured, and in two experiments, the valve branch pipes installed in the valve group module E may be different, for example, the flow of the installed valve branch pipe may have 5m3/h、1m3H or more different flows. That is to say, in an experiment, the flow of the valve branch pipe of installation is all the same, when the measuring range and the precision of the flowmeter that awaits measuring change, can change the valve branch pipe of different flow and carry out the experiment.
According to one embodiment of the invention, the gas distribution module A, the pressurization module B, the valve group module E and the detection module C are detachably connected. In this way, when certain modules need to be cleaned or replaced, the modules that need to be replaced can be disassembled. And, can carry out the lectotype equipment to above-mentioned module according to the detection requirement, in an embodiment, adopt the hose to add the pipe strap to connect between the module, all need detect the gas tightness of equipment before detecting each time.
As shown in fig. 2, according to embodiment 1 of the present invention, the inspection equipment is composed of two or more gas flow meter inspection equipment for inspecting a single gas flow meter, and thus is a kit of different inspection flow meters. The detection gas can be prepared with detection gases of uniform components and detection gases of different components. When the detection gas with uniform components is configured, a bell jar can be adopted, and the air bag 1 is proportionally input into the bell jar outside the bell jar. When multiple component gases are deployed, multiple bell jars are used, such as bell jars 7 and 13 shown in FIG. 2.
In embodiment 2 shown in fig. 4, if multi-meter same-component detection is performed, a plurality of single-substance airbags 1 are placed in a bell jar 7 of a gas distribution module a, each airbag 1 is provided with an automatic regulating valve, and the valves of the respective airbags 1 are opened according to the gas composition requirements to match the detection gas. The gas, which is dispensed to sense the gas composition, may be introduced directly into the pressurized tank 20 or may be temporarily stored in the bell jar 7.
After the gas to be detected is configured, the valve 8 is opened, the valves 9 and 15 are closed, the external force pulls the balance weight 2 of the dead weight sealing movable part 12 to suck the detected gas into the pressurization tank 20, then the valve 8 is closed, and the gas distribution stage is completed. And subsequently, connecting the measured flow meter, and after the constant temperature cabinet 10 is heated to the set temperature, enabling the system to enter a detection mode. The valves 9 and 15 are opened and if the composition of the test gas is tested for use, experimental testing can be performed using the valve manifold flow of known valve stack modules. If it is an unused component, it can be measured through the valve manifold with standard flow meter 11 on the manifold while calibrating the other valve manifolds. The detection gas enters the detection module C, the detection gas enters the to-be-detected flow meters arranged on the to-be-detected flow meter installation parts 5 and 19 after being heated at constant temperature through the straight pipe, and the temperature pressure sensor 4 and the temperature pressure sensor 18 continuously transmit real-time data to the data analysis module D in the experimental process. And the data analysis module D analyzes the acquired data to obtain parameters such as flow range, pressure loss condition, flow along with temperature, pressure fluctuation range, accuracy and the like of the relevant flowmeter. The detection gas can be recycled to the gas storage tank 6 for centralized collection and treatment.
In embodiment 3 as shown in fig. 5, the gas detecting apparatus of different components can place the gas distributing airbag 1 outside the bell jar 7 and the bell jar 13, here exemplified as the gas distributing of the bell jar 7.
A plurality of air bags 1 are placed in a bell jar 7 of the air distribution module A, each air bag 1 is provided with an automatic adjusting valve, and the valves of the respective air bags 1 are opened according to the gas composition requirements to match and detect gas. The dispensed detector components are known and the gas can be either directly introduced into the pressurized tank 20 or temporarily stored in the bell 7. The air distribution process of the bell jar 13 is the same.
The pressurized tank 20 is a plurality of independent tanks when the gas with different components is used, the upper part of each tank is connected with the self-weight sealing movable part 12, namely, the operation of the self-weight sealing movable part 12 acts on each independent pressurized tank 20 to press the detected gas with different components into a subsequent system.
After the gas to be detected is configured, the valve 8 and the valve 14 are opened, the valves 9 and 15 are closed, the detection gas is sucked into the pressurization tank 20 by pulling the balance weight 2 of the dead weight sealing movable part 12 through external force, and then the valve 8 and the valve 14 are closed, so that the gas distribution stage is completed. And the measured flowmeter is connected subsequently, and the system enters a detection mode after the constant temperature cabinet 10 is heated to the set temperature. Starting with valves 9 and 15, if the composition of the test gas is such that it has been tested for use, experimental testing can be performed using the known valve manifold flow of valve bank module E. If it is an unused component, it can be measured through the valve manifold with standard flow meters 11 and 17 on the valve manifold while calibrating the other valve manifolds. The detection gas enters the detection module C, the detection gas enters the to-be-detected flow meters arranged on the to-be-detected flow meter installation parts 5 and 19 after being heated at constant temperature through the straight pipes, and the temperature and pressure sensor 4 and the temperature and pressure sensor 18 continuously transmit real-time data to the data analysis module D in the experimental process. And the data analysis module D analyzes the acquired data to obtain parameters such as flow range, pressure loss condition, flow along with temperature, pressure fluctuation range, accuracy and the like of the relevant flowmeter. The detection gas can be recycled to the gas storage tank 6 for centralized collection and treatment.
According to an embodiment of the invention, natural gas is used as the detection gas, and the proportioning device can adopt an air bag 1 of methane and nitrogen (carbon dioxide) or can adopt natural gas in the market directly as the detection gas. The make-up gas methane or nitrogen is used here.
The configured natural gas is stored in a bell jar 7, other components of the equipment are connected, then the airtightness is tested, and a flowmeter (a household gas meter) to be tested is installed after the airtightness is qualified. The temperature of the constant temperature cabinet is raised to 20 ℃ after the temperature of the constant temperature gas cabinet is raised to 20 ℃. The detection gas in the pressure tank 20 enters the constant temperature cabinet 10 through the regulation and control of the valve group module E.
After the natural gas components with different components are configured, the valves 8 and 14 are opened, the valves 9 and 15 are closed, the balance weight 2 of the self-weight sealing movable part 12 is pulled by external force to suck the detection gas into different pressurization tanks 20 respectively, and then the valves 8 and 14 are closed, so that the gas distribution stage is completed. And the measured flowmeter is connected subsequently, and the system enters a detection mode after the constant temperature cabinet 10 is heated to the set temperature. Starting valves 9 and 15, if the natural gas component is configured to be tested for use, experimental testing can be performed using the valve manifold flow of the known valve stack module E. If it is an unused component, it can be measured through the valve manifold with standard flow meters 11 and 17 on the manifold while calibrating the other valve manifolds. The detection gas enters the detection module C, the detection gas enters the to-be-detected flow meters arranged on the to-be-detected flow meter installation parts 5 and 19 after being heated at constant temperature through the straight pipes, and the temperature and pressure sensor 4 and the temperature and pressure sensor 18 continuously transmit real-time data to the data analysis module D in the experimental process. And the data analysis module D analyzes the acquired data to obtain parameters such as flow range, pressure loss condition, flow along with temperature, pressure fluctuation range, accuracy and the like of the relevant flowmeter. The detection gas can be recycled to the gas storage tank 6 for centralized collection and treatment.
In addition, the data analysis module D can further provide data instructions for the flow of the valve group module E, the gas component in the gas distribution module A and the temperature and pressure in the detection module C according to the collected data.
According to another embodiment of the invention, the marine natural gas (natural gas) and the coal natural gas are used as the detection gas, two different natural gases are injected into different pressure tanks 20, and the pressure of the pressure equipment is adjusted to 10 Pa. The valve 8 is then closed and the gas distribution phase is completed. And the measured flowmeter is connected subsequently, and the system enters a detection mode after the temperature of the constant temperature cabinet 10 is adjusted to 10 ℃. Opening a valve 9 and a valve 15, measuring the unused components of the natural gas by the valve branch pipes with standard flowmeters 11 and 17 on the valve branch pipes, calibrating other valve branch pipes, wherein each valve group module E adopts 8 valve branch pipes, and the maximum upper limit of the calibrated flow is 80m3/h。
The two natural gases respectively enter the constant temperature cabinet 10, are heated at constant temperature through the straight pipe and then enter the to-be-measured flow meters arranged on the to-be-measured flow meter installation parts 5 and 19, and the temperature pressure sensor 4 and the temperature pressure sensor 18 continuously transmit real-time data to the data analysis module D in the experimental process. And the data analysis module D analyzes the acquired data to obtain parameters such as flow range, pressure loss condition, flow along with temperature, pressure fluctuation range, accuracy and the like of the relevant flowmeter. The detection gas can be recycled to the gas storage tank 6 for centralized collection and treatment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A gas flow meter detection device, comprising a gas delivery module (T) for providing a detection gas, a plurality of valve group modules (E) connected with the gas delivery module (T), and a detection module (C) connected with the valve group modules (E);
the detection module (C) comprises a plurality of flowmeters to be detected, and the valve group module (E) is connected with the flowmeters to be detected in a one-to-one correspondence manner; and the gas delivery module comprises a chamber (20) and a self-weight sealing movable part (12) for pressure regulation of the chamber (20), and the valve group module (E) is connected with the chamber (20);
wherein at least one of the plurality of valve stack modules (E) comprises: at least one first valve branch pipe connected with a standard flow meter in series and a plurality of second valve branch pipes not connected with the standard flow meter in series; if the component of the detection gas is detected to be used by the gas flowmeter detection equipment, detecting different flow rates of the flowmeter to be detected through the flow rates of the plurality of second valve branch pipes of the valve group module (E); if the component of the test gas is that the gas flow meter detection equipment is not used, performing detection through the first valve branch pipe, and simultaneously calibrating the second valve branch pipe through the first valve branch pipe;
and the inlet and the outlet of each flowmeter to be measured are respectively provided with at least one temperature pressure sensor.
2. The gas flow meter detection device of claim 1,
the gas delivery module (T) comprises a gas distribution module (A) for containing the detection gas and a pressurization module (B) for pressurizing the detection gas, and the chamber (20) is arranged in the pressurization module (B); and a gas inlet of the pressurizing module (B) is communicated with a gas outlet of the gas distribution module (A), and gas outlets of the pressurizing module (B) are correspondingly connected with the valve group modules (E) one by one.
3. A gas meter detection device according to claim 2, wherein said pressurizing module (B) comprises one said chamber (20).
4. The gas meter detection device according to claim 2, wherein the pressurization module (B) comprises a plurality of said chambers (20),
wherein the chambers (20) are connected with the valve group modules (E) in a one-to-one correspondence manner.
5. The flowmeter detection device according to claim 4, wherein each chamber (20) is provided with a respective said free weight seal movable portion (12), wherein the tops of all said free weight seal movable portions (12) are connected to each other by a connecting rod.
6. The flow meter detection apparatus according to claim 4, wherein each of the chambers (20) is configured as a flexible chamber, and all of the flexible chambers are synchronously pressure regulated via the common self-weight sealing activity (12).
7. The gas meter detection device according to claim 1, wherein the detection module (C) comprises a thermostatic cabinet (10), the flow meter under test being arranged in the thermostatic cabinet (10).
8. The gas flow meter detection device of claim 2, further comprising a data analysis module (D) and a data acquisition feedback module,
wherein the data analysis module (D) is used for receiving the data collected by the data collection feedback module and analyzing the data to obtain the parameter of the flowmeter to be measured,
the data acquisition feedback module comprises a component feedback module (G) and a temperature pressure feedback module (F) which acquire the flow data of the valve group module (E),
the component feedback module (G) feeds back the gas components in the gas distribution module (A) to the data analysis module (D); the temperature and pressure feedback module (F) feeds back the temperature and pressure in the detection module (C) to the data analysis module (D).
9. The gas flow meter detection device of claim 1,
at least one second standard flow meter is arranged in the detection module (C).
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| CN201610789131.1A CN106153162B (en) | 2016-08-31 | 2016-08-31 | Gas flowmeter detection equipment |
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| CN201610789131.1A CN106153162B (en) | 2016-08-31 | 2016-08-31 | Gas flowmeter detection equipment |
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| CN106153162A CN106153162A (en) | 2016-11-23 |
| CN106153162B true CN106153162B (en) | 2020-03-06 |
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| RU2793592C1 (en) * | 2022-06-03 | 2023-04-04 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева - КАИ" | Mobile verification unit for gas distribution station meters |
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| CN108344471B (en) * | 2017-12-27 | 2020-06-02 | 新智数字科技有限公司 | Method and device for detecting gas meter |
| CN108759994A (en) * | 2018-08-15 | 2018-11-06 | 真兰仪表科技有限公司 | A kind of dry type gas meter, flow meter school missing inspection measurement equipment and its application method |
| CN108709613A (en) * | 2018-08-28 | 2018-10-26 | 苏州市格致科教仪器设备制造有限公司 | A kind of system and method that achievable multithread gauge is calibrated simultaneously |
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| CN106153162A (en) | 2016-11-23 |
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