CN110857874B - Natural gas flowmeter calibrating device - Google Patents
Natural gas flowmeter calibrating device Download PDFInfo
- Publication number
- CN110857874B CN110857874B CN201810967728.XA CN201810967728A CN110857874B CN 110857874 B CN110857874 B CN 110857874B CN 201810967728 A CN201810967728 A CN 201810967728A CN 110857874 B CN110857874 B CN 110857874B
- Authority
- CN
- China
- Prior art keywords
- pressure
- gas
- natural gas
- electromagnetic valve
- gas storage
- 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
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a natural gas flowmeter calibrating device, which comprises: the device comprises a pressurization mechanism, a high-pressure gas storage mechanism, a pressure regulating mechanism and a standard natural gas flowmeter; the supercharging mechanism is used for supercharging the natural gas flowing into the high-pressure gas storage mechanism to a preset pressure; the high-pressure gas storage mechanism comprises: the first high-pressure gas storage unit is provided with a first electromagnetic valve, a second electromagnetic valve and a first pressure sensor; the second high-pressure gas storage unit is provided with a third electromagnetic valve, a fourth electromagnetic valve and a second pressure sensor; the first air valve controller is used for receiving the air pressure information transmitted by the first pressure sensor and controlling the opening and closing of the first electromagnetic valve and the fourth electromagnetic valve; the second air valve controller is used for receiving the gas pressure information transmitted by the second pressure sensor and controlling the opening and closing of the second electromagnetic valve and the third electromagnetic valve; the standard natural gas flowmeter is used for being communicated with the natural gas flowmeter to be calibrated; the pressure regulating mechanism is used for regulating the pressure of the pressurized natural gas to be the same as the working pressure of the natural gas flowmeter to be calibrated.
Description
Technical Field
The invention relates to the field of natural gas flow detection, in particular to a natural gas flowmeter calibrating device.
Background
In order to ensure the accuracy, reliability and fairness of natural gas trade metering, a natural gas flowmeter needs to be calibrated (i.e. a natural gas flowmeter to be calibrated) to ensure the accuracy of measurement.
At present, a natural gas flowmeter to be calibrated is generally calibrated by using a standard natural gas flowmeter, specifically, natural gas is sequentially passed through the standard natural gas flowmeter and the natural gas flowmeter to be calibrated, and then the natural gas flowmeter to be calibrated is calibrated by comparing the measurement results of the standard natural gas flowmeter and the natural gas flowmeter to be calibrated.
The inventor finds that the prior art has at least the following problems:
if the pressure of the natural gas is too low, the calibration accuracy of the natural gas flowmeter to be calibrated of the standard natural gas flowmeter is affected.
Disclosure of Invention
The embodiment of the invention provides a calibration device for a natural gas flowmeter, which can solve the problems. The technical scheme is as follows:
a natural gas flow meter calibration device, comprising: the pressurization mechanism, the high-pressure gas storage mechanism, the pressure regulating mechanism and the standard natural gas flowmeter are sequentially communicated through pipelines;
the pressurization mechanism is used for pressurizing the natural gas flowing into the high-pressure gas storage mechanism to a preset pressure;
the high-pressure gas storage mechanism comprises: the inlet and the outlet of the first high-pressure gas storage unit are respectively provided with a first electromagnetic valve and a second electromagnetic valve, and the first high-pressure gas storage unit is also provided with a first pressure sensor;
the inlet and the outlet of the second high-pressure gas storage unit are respectively provided with a third electromagnetic valve and a fourth electromagnetic valve, and the second high-pressure gas storage unit is also provided with a second pressure sensor;
the first gas valve controller is electrically connected with the first electromagnetic valve, the fourth electromagnetic valve and the first pressure sensor and is used for receiving the gas pressure information of the first high-pressure gas storage unit transmitted by the first pressure sensor and controlling the opening and closing of the first electromagnetic valve and the fourth electromagnetic valve according to the gas pressure information of the first high-pressure gas storage unit;
the second gas valve controller is electrically connected with the second electromagnetic valve, the third electromagnetic valve and the second pressure sensor and is used for receiving the gas pressure information of the second high-pressure gas storage unit transmitted by the second pressure sensor and controlling the opening and closing of the second electromagnetic valve and the third electromagnetic valve according to the gas pressure information of the second high-pressure gas storage unit;
the standard natural gas flowmeter is used for being communicated with a natural gas flowmeter to be calibrated so as to calibrate the natural gas flowmeter to be calibrated;
the pressure regulating mechanism is used for regulating the pressure of the pressurized natural gas to be the same as the working pressure of the natural gas flowmeter to be calibrated.
In one possible design, the first high-pressure gas storage unit includes: the first gas storage tank is connected with the first gas inlet trunk line and the first gas outlet trunk line;
the first air inlet main line is communicated with the supercharging mechanism, and the first electromagnetic valve is further arranged on the first air inlet main line;
the first air outlet main line is communicated with the pressure regulating mechanism, and the second electromagnetic valve is also arranged on the first air outlet main line;
a plurality of first natural gas branches are arranged in parallel between the first inlet trunk line and the first outlet trunk line;
the inlet and the outlet of the first gas storage tank are communicated with the corresponding first natural gas branch line, and the inlet and the outlet of the first gas storage tank are respectively provided with a manual valve;
and at least one first air storage tank is provided with the first pressure sensor.
In one possible design, the second high pressure gas storage unit includes: the second gas inlet main line, the second gas outlet main line, a plurality of second natural gas branch lines and a plurality of second gas storage tanks;
the second air inlet main line is communicated with the supercharging mechanism, and the third electromagnetic valve is further arranged on the second air inlet main line;
the second air outlet main line is communicated with the pressure regulating mechanism, and the fourth electromagnetic valve is further arranged on the second air outlet main line;
a plurality of the second natural gas branch lines are arranged in parallel between the second inlet trunk line and the second outlet trunk line;
the inlet and the outlet of the second gas storage tank are communicated with the corresponding second natural gas branch lines, and the inlet and the outlet of the second gas storage tank are respectively provided with a manual valve;
and at least one second air storage tank is provided with the second pressure sensor.
In a possible design, the standard natural gas flowmeter and the natural gas flowmeter to be calibrated are sequentially arranged along the flow direction of the natural gas after pressure regulation.
In one possible design, the calibration apparatus for a natural gas flowmeter further includes: and the low-pressure gas storage mechanism is arranged between the natural gas flowmeter to be calibrated and the supercharging mechanism.
In one possible embodiment, the pressure regulating device comprises: the inlet and the outlet of the pressure regulating tank are respectively communicated with the high-pressure gas storage mechanism and the standard natural gas flowmeter;
a third pressure sensor arranged on the pressure regulating tank;
the fifth electromagnetic valve is arranged at the emptying port of the pressure regulating tank and used for discharging the pressurized natural gas in the pressure regulating tank;
the sixth electromagnetic valve is arranged at the outlet of the pressure regulating tank;
and the third gas valve controllers are respectively connected with the third pressure sensor, the fifth electromagnetic valve and the sixth electromagnetic valve and are used for receiving the gas pressure information of the pressure regulating tank transmitted by the third pressure sensor and controlling the opening and closing of the fifth electromagnetic valve and the sixth electromagnetic valve according to the gas pressure information of the pressure regulating tank.
In a possible design mode, the vent of the pressure regulating tank is communicated with the inlet of the low-pressure gas storage mechanism through a pipeline.
In one possible embodiment, the pressurization means comprise at least one centrifugal gas compressor.
In one possible embodiment, the predetermined pressure is greater than the operating pressure by 0.5Mpa to 1.8 Mpa.
In one possible embodiment, the predetermined pressure is greater than the operating pressure by 0.9Mpa to 1.2 Mpa.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the natural gas flowmeter calibrating device provided by the embodiment of the invention increases the pressure of the natural gas to be higher than the working pressure matched with the natural gas flowmeter to be calibrated through the pressurization mechanism, and the first high-pressure gas storage unit and the second high-pressure gas storage unit of the high-pressure gas storage mechanism can alternately convey natural gas with stable pressure into the pressure regulating mechanism, namely the pressure is larger than the working environment air pressure of the natural gas flowmeter to be calibrated during actual detection, and the natural gas with the same pressure as the working environment air pressure of the natural gas flowmeter to be calibrated during actual detection is delivered through the pressure regulating mechanism, the calibration pressure of the natural gas flow machine calibration device can be guaranteed not to be limited by the natural gas pressure, the calibration accuracy of the natural gas flow meter to be calibrated can be improved, the natural gas flow meter under different working environment air pressures can be calibrated, and the application range is widened.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a calibration device for a natural gas flowmeter according to an embodiment of the present invention
FIG. 2 is a schematic structural diagram of a high pressure gas storage mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a first high pressure gas storage unit and a second high pressure gas storage unit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a pressure regulating mechanism according to an embodiment of the present invention.
Wherein the various reference numbers in the drawings are described below:
1-a supercharging mechanism;
2-a high-pressure gas storage mechanism;
21-a first high-pressure gas storage unit;
211-a first solenoid valve;
212-a second solenoid valve;
213 — a first pressure sensor;
21 a-first intake trunk line;
21 b-a first air outlet trunk line;
21 c-first natural gas branch;
21 d-a first air reservoir;
22-a second high-pressure gas storage unit;
221-a third solenoid valve;
222-a fourth solenoid valve;
223-a second pressure sensor;
22 a-second intake trunk line;
22 b-a second outgoing trunk line;
22 c-a second natural gas branch;
22 d-a second air reservoir;
23-a first air valve controller;
24-a second air valve controller;
3-a pressure regulating mechanism;
31-a pressure regulating tank;
311-a third pressure sensor;
312-a fifth solenoid valve;
313-a sixth solenoid valve;
32-a third air valve controller;
4-standard natural gas flow meter;
5-low pressure gas storage mechanism;
m-natural gas flowmeter to be calibrated.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The working pressure of the natural gas flowmeter M to be calibrated according to the embodiment of the present invention refers to the working environment air pressure of the natural gas flowmeter M to be calibrated during actual detection.
An embodiment of the present invention provides a calibration apparatus for a natural gas flowmeter, as shown in fig. 1, the apparatus includes: the pressurization mechanism 1, the high-pressure gas storage mechanism 2, the pressure regulating mechanism 3 and the standard natural gas flowmeter 4 are communicated in sequence through pipelines; the pressurization mechanism 1 is used for pressurizing the natural gas flowing into the high-pressure gas storage mechanism 2 to a preset pressure; as shown in fig. 2, the high pressure gas storage mechanism 2 includes: a first high-pressure gas storage unit 21 with an inlet and an outlet respectively communicated with the pressurization mechanism 1 and the pressure regulating mechanism 3, wherein the inlet and the outlet of the first high-pressure gas storage unit 21 are respectively provided with a first electromagnetic valve 211 and a second electromagnetic valve 212, and the first high-pressure gas storage unit 21 is also provided with a first pressure sensor 213; a second high-pressure gas storage unit 22 with an inlet and an outlet respectively communicated with the pressurization mechanism 1 and the pressure regulating mechanism 3, wherein the inlet and the outlet of the second high-pressure gas storage unit 22 are respectively provided with a third electromagnetic valve 221 and a fourth electromagnetic valve 222, and the second high-pressure gas storage unit 22 is also provided with a second pressure sensor 223; the first air valve controller 23, which is electrically connected to the first electromagnetic valve 211, the fourth electromagnetic valve 222, and the first pressure sensor 213, is configured to receive the gas pressure information of the first high pressure gas storage unit 21 transmitted by the first pressure sensor 213, and control the opening and closing of the first electromagnetic valve 211 and the fourth electromagnetic valve 222 according to the gas pressure information of the first high pressure gas storage unit 21; the second gas valve controller 24 is electrically connected with the second solenoid valve 212, the third solenoid valve 221 and the second pressure sensor 223, and is configured to receive the gas pressure information of the second high-pressure gas storage unit 22 transmitted by the second pressure sensor 223 and control the on/off of the second solenoid valve 212 and the third solenoid valve 221 according to the gas pressure information of the second high-pressure gas storage unit 22; the standard natural gas flowmeter 4 is used for communicating with the natural gas flowmeter M to be calibrated so as to calibrate the natural gas flowmeter M to be calibrated. The pressure regulating mechanism 3 is used for regulating the pressurized natural gas pressure to be the same as the working pressure of the natural gas flowmeter M to be calibrated.
It can be understood that the inlet of the first high-pressure gas storage unit 21 is communicated with the pressurization mechanism 1, and the outlet of the first high-pressure gas storage unit 21 is communicated with the pressure regulation mechanism 3; the inlet of the second high-pressure gas storage unit 22 is communicated with the pressurization mechanism 1, and the outlet of the second high-pressure gas storage unit 22 is communicated with the pressure regulating mechanism 3. A first electromagnetic valve 211 is arranged at the inlet of the first high-pressure gas storage unit 21, and a second electromagnetic valve 212 is arranged at the outlet of the first high-pressure gas storage unit 21; the inlet of the second high pressure gas storage unit 22 is provided with a third electromagnetic valve 221, and the outlet of the second high pressure gas storage unit 22 is provided with a fourth electromagnetic valve 222.
The following description is given of the operating principle of the calibration apparatus for a natural gas flowmeter according to the embodiment of the present invention:
when the calibration device is applied, the natural gas flowmeter M to be calibrated is communicated with the standard natural gas flowmeter 4. The natural gas (such as an upstream low-pressure natural gas source) conveyed into the high-pressure gas storage mechanism 2 is pressurized to a preset pressure by using the pressurization mechanism 1, the gas pressure of the first high-pressure gas storage unit 21 and the gas pressure of the second high-pressure gas storage unit 22 are respectively monitored in real time, and the first high-pressure gas storage unit 21 and the second high-pressure gas storage unit 22 are controlled to convey the natural gas of which the pressure is not lower than the working pressure matched with the natural gas flowmeter M to be calibrated to the pressure regulating mechanism 3 in turn; the pressure regulating mechanism 3 regulates the pressure of the pressurized natural gas to a working pressure (namely the working environment air pressure of the natural gas flowmeter M to be calibrated during actual detection) matched with the natural gas flowmeter M to be calibrated; and enabling the pressure-regulated natural gas to flow through the standard natural gas flowmeter 4 and the natural gas flowmeter M to be calibrated, and then calibrating the natural gas flowmeter M to be calibrated according to the measured value of the standard natural gas flowmeter 4.
Wherein, the working process of controlling the first high-pressure gas storage unit 21 and the second high-pressure gas storage unit 22 to alternately convey the natural gas with the pressure not lower than the working pressure matched with the natural gas flowmeter M to be calibrated to the pressure regulating mechanism 3 is as follows: acquiring gas pressure information of the first high pressure gas storage unit 21 by using the first pressure sensor 213 and transmitting the gas pressure information to the first gas valve controller 23; meanwhile, the second pressure sensor 223 is used to acquire gas pressure information of the second high pressure gas storage unit 22 and transmit the gas pressure information to the second gas valve controller 24. If the gas pressure of the first high-pressure gas storage unit 21 is less than the working pressure matched with the natural gas flow meter M to be calibrated, and the gas pressure of the second high-pressure gas storage unit 22 is not lower than the working pressure matched with the natural gas flow meter M to be calibrated, the first electromagnetic valve 211 and the fourth electromagnetic valve 222 are opened by using the first gas valve controller 23, and the second electromagnetic valve 212 and the third electromagnetic valve 221 are closed by using the second gas valve controller 24, so that the pressurization mechanism 1 pressurizes the first high-pressure gas storage unit 21 which does not meet the pressure requirement; so that the second high-pressure gas storage unit 22 delivers the natural gas meeting the pressure requirement to the pressure regulating mechanism 3. After the gas pressure of the second high-pressure gas storage unit 22 is reduced to meet the requirement, the inflated first high-pressure gas storage unit 21 is used for conveying the natural gas to the pressure regulating mechanism 3, and meanwhile, the pressurizing unit is used for pressurizing the second high-pressure gas storage unit 22, so that the first high-pressure gas storage unit 21 and the second high-pressure gas storage unit 22 can convey the natural gas of which the pressure is not lower than the working pressure matched with the natural gas flowmeter M to be calibrated to the pressure regulating mechanism 3 in turn.
It can be seen that, according to the calibration device for a natural gas flow meter provided in the embodiment of the present invention, the pressure of the natural gas is increased to be higher than the working pressure adapted to the natural gas flow meter M to be calibrated by the pressurization mechanism 1, and the natural gas with stable pressure can be alternately delivered into the pressure regulating mechanism 3 by the first high-pressure gas storage unit 21 and the second high-pressure gas storage unit 22 of the high-pressure gas storage mechanism 2, that is, the pressure is higher than the working environment pressure of the natural gas flow meter M to be calibrated during actual detection, and the natural gas with the same pressure as the working environment pressure of the natural gas flow meter M to be calibrated during actual detection is delivered by the pressure regulating mechanism 3, so that the calibration pressure of the calibration device for a natural gas flow meter is not limited by the natural gas pressure, which not only can improve the calibration accuracy of the natural gas flow meter M to be calibrated, the application range is improved.
In order to meet the measurement and calibration requirements of the standard natural gas flow meter 4 and the natural gas flow meter M to be calibrated in different detectable flow ranges, in the embodiment of the present invention, as shown in fig. 3, the first high-pressure gas storage unit 21 includes: a first inlet trunk line 21a, a first outlet trunk line 21b, a plurality of first natural gas branch lines 21c, a plurality of first gas tanks 21 d; the first intake trunk line 21a is communicated with the supercharging mechanism 1, and the first intake trunk line 21a is further provided with a first electromagnetic valve 211; the first air outlet main trunk line 21b is communicated with the pressure regulating mechanism 3, and the first air outlet main trunk line 21b is also provided with a second electromagnetic valve 212; a plurality of first natural gas branch lines 21c are provided in parallel between the first intake trunk line 21a and the first outlet trunk line 21 b; the inlet and outlet of the first air storage tank 21d are communicated with the corresponding first natural gas branch line 21c, and the inlet and outlet of the first air storage tank 21d are respectively provided with a manual valve; also, a first pressure sensor 213 is provided in at least one of the first air tanks 21 d.
Through the arrangement, the number of the first gas storage tanks 21d which run on line, namely the number of the first gas storage tanks 21d with the inlets communicated with the pressurization mechanism 1 and the outlets communicated with the pressure regulating mechanism 3 can be determined according to the detectable flow range of the standard natural gas flow meter 4 and the natural gas flow meter M to be calibrated, and the volume of the first high-pressure gas storage unit 21 can be further changed.
It should be noted that the inlet and outlet of each first air tank 21d are in the same working state, for example, in the open state at the same time, or in the closed state at the same time. And, the inlet and outlet of each first air tank 21d communicate with the same first natural gas branch line 21c only.
The number of the first air tanks 21d may be 3 to 10, for example, 3, 4, 5, 6, 7, 8, 9, or 10.
In addition, at least one first tank 21d may be provided with the first pressure sensor 213, for example, one first tank 21d may be provided with the first pressure sensor 213, or each first tank 21d may be provided with the first pressure sensor 213, or the like. Note that the pressure of the natural gas in each first gas tank 21d is the same.
Similarly, in order to meet the measurement and calibration requirements of the standard natural gas flow meter 4 and the natural gas flow meter M to be calibrated in different detectable flow ranges, in the embodiment of the present invention, as shown in fig. 3, the second high-pressure gas storage unit 22 includes: a second inlet trunk line 22a, a second outlet trunk line 22b, a plurality of second natural gas branch lines 22c, a plurality of second gas tanks 22 d; the second intake trunk line 22a is communicated with the supercharging mechanism 1, and the second intake trunk line 22a is also provided with a third electromagnetic valve 221; the second air outlet trunk line 22b is communicated with the pressure regulating mechanism 3, and a fourth electromagnetic valve 222 is further arranged on the second air outlet trunk line 22 b; a plurality of second natural gas branch lines 22c are arranged in parallel between the second inlet trunk line 22a and the second outlet trunk line 22 b; the inlet and outlet of the second gas storage tank 22d are communicated with the corresponding second natural gas branch line 22c, and the inlet and outlet of the second gas storage tank 22d are respectively provided with a manual valve; and, a second pressure sensor 223 is provided to at least one second air tank 22 d.
Through the arrangement, the number of the second gas storage tanks 22d which operate on line, namely the number of the second gas storage tanks 22d with the inlets communicated with the pressurization mechanism 1 and the outlets communicated with the pressure regulating mechanism 3 can be determined according to the detectable flow range of the standard natural gas flow meter 4 and the natural gas flow meter M to be calibrated, and the volume of the second high-pressure gas storage unit 22 can be further changed.
It should be noted that the inlet and outlet of each second air tank 22d are in the same working state, for example, in the open state at the same time, or in the closed state at the same time. And, the inlet and outlet of each second gas storage tank 22d are communicated with the same second natural gas branch line 22c only.
The number of the second air tanks 22d may be 3 to 10, for example, 3, 4, 5, 6, 7, 8, 9, or 10.
In addition, a second pressure sensor 223 may be provided in at least one second air tank 22d, for example, a second pressure sensor 223 may be provided in one second air tank 22d, or a second pressure sensor 223 may be provided in each second air tank 22 d. Note that the pressure of the natural gas in each of the second storage tanks 22d is the same.
The natural gas flowmeter M to be calibrated may be disposed between the pressure regulating mechanism 3 and the standard natural gas flowmeter 4, or may be sequentially disposed with the standard natural gas flowmeter 4 along the flow direction of the natural gas after pressure regulation, and the embodiment of the present invention is preferably adopted based on the feature that the latter has a feature of facilitating installation and calibration of the natural gas flowmeter under different working environment air pressures.
The pressure-regulated natural gas refers to pressurized natural gas that has been treated by the pressure regulating means 3.
Wherein, the natural gas flowmeter M to be calibrated can be communicated with the standard natural gas flowmeter 4 through a pipeline.
In an embodiment of the present invention, as shown in fig. 1, the calibration apparatus for a natural gas flowmeter further includes: and the low-pressure gas storage mechanism 5 is arranged between the natural gas flowmeter M to be calibrated and the supercharging mechanism 1.
Through setting up as above, can realize treating the calibration natural gas flowmeter M and carry out the calibration in-process, can cyclic utilization natural gas to resources are saved also can effectively avoid because of the influence of natural gas circulation flow to calibration result accuracy.
It should be noted that the low-pressure gas storage mechanism 5 plays a role of storing low-pressure natural gas, the low-pressure natural gas is pressurized by the pressure regulating mechanism 3, the standard natural gas flowmeter 4 and the natural gas flowmeter M to be calibrated in sequence, and the pressure of the pressurized natural gas is reduced after passing through the device.
The low-pressure gas storage mechanism 5 can be a gas storage tank, a valve is arranged at the inlet of the gas storage tank and communicated with the natural gas flowmeter M to be calibrated through a pipeline, and a valve is arranged at the outlet of the gas storage tank and communicated with the pressurization mechanism 1 through a pipeline.
On the premise of simple structure and convenient operation, in the embodiment of the present invention, as shown in fig. 4, the pressure regulating mechanism 3 includes: the inlet and the outlet of the pressure regulating tank 31 are respectively communicated with the high-pressure gas storage mechanism 2 and the standard natural gas flowmeter 4; a third pressure sensor 311 and a fifth electromagnetic valve 312 which are arranged on the pressure regulating tank 31, wherein the fifth electromagnetic valve 312 is used for discharging the pressurized natural gas in the pressure regulating tank 31; a sixth electromagnetic valve 313 provided at an outlet of the pressure-regulating tank 31; and the third gas valve controller 32 is respectively connected with the third pressure sensor 311, the fifth electromagnetic valve 312 and the sixth electromagnetic valve 313, and is used for receiving the gas pressure information of the pressure regulating tank 31 transmitted by the third pressure sensor 311 and controlling the opening and closing of the fifth electromagnetic valve 312 and the sixth electromagnetic valve 313 according to the gas pressure information of the pressure regulating tank 31.
With the above arrangement, when the pressure regulating mechanism 3 regulates the pressure of the pressurized natural gas, the fifth electromagnetic valve 312 and the sixth electromagnetic valve 313 are closed first, and the pressurized natural gas is delivered into the pressure regulating tank 31 of the pressure regulating mechanism 3. The third pressure sensor 311 is used for acquiring the gas pressure information flowing into the pressure regulating tank 31, and the gas pressure information is transmitted to the third gas valve controller 32, if the gas pressure of the pressure regulating tank 31 is greater than the working environment gas pressure of the natural gas flowmeter M to be calibrated during actual detection, the third gas valve controller 32 is used for opening the fifth electromagnetic valve 312 and discharging a part of the natural gas until the gas pressure of the pressure regulating tank 31 is equal to the working environment gas pressure of the natural gas flowmeter M to be calibrated during actual detection, at this moment, the third gas valve controller 32 is reused, the fifth electromagnetic valve 312 is closed, and the sixth electromagnetic valve 313 is opened, so that the natural gas meeting the requirements sequentially flows into the standard natural gas flowmeter 4 and the natural gas flowmeter M to be calibrated.
Wherein, the bottom of the pressure regulating tank 31 is provided with an evacuation port, and the fifth electromagnetic valve 312 is installed at the evacuation port.
Based on the pressure regulating mechanism 3 of the above structure, in order to improve the recycling of the discharged natural gas, as shown in fig. 1, the evacuation port of the pressure regulating tank 31 may be communicated with the inlet of the low-pressure gas storage mechanism 5 through a pipeline.
In an embodiment of the invention, the supercharging means 1 comprise at least one centrifugal gas compressor. In practical application, the displacement of the centrifugal compressor can be calculated according to the volume of the high-pressure gas storage mechanism 2, and the model of the centrifugal gas compressor is selected; in addition, the number of the centrifugal gas compressors can be selected according to the gas flow detectable by the standard natural gas flow meter 4 and the natural gas flow meter to be calibrated M, so that the requirements of pressurizing time and maximally saving the operation cost can be met.
In the embodiment of the present invention, the preset pressure is higher than the working pressure (i.e., the working environment pressure of the natural gas flowmeter M to be calibrated during actual detection) by 0.5Mpa to 1.8Mpa (for example, 0.5Mpa, 0.8Mpa, 1.1Mpa, 1.4Mpa, 1.7Mpa, 1.8Mpa, etc.), and preferably, 0.9Mpa to 1.2Mpa (for example, 0.9Mpa, 1.0Mpa, 1.1Mpa, 1.2Mpa, etc.), so as to more conveniently adjust and control the pressurized natural gas pressure in the pressure regulating mechanism 3, thereby obtaining a more stable calibration result.
All the above optional technical solutions may be combined arbitrarily to form the optional embodiments of the present disclosure, and are not described herein again.
The above description is only an illustrative embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A natural gas flow meter prover device, the device comprising: the device comprises a pressurization mechanism (1), a high-pressure gas storage mechanism (2), a pressure regulating mechanism (3), a standard natural gas flowmeter (4) and a low-pressure gas storage mechanism (5) which are sequentially communicated through pipelines;
the pressurization mechanism (1) is used for pressurizing natural gas flowing into the high-pressure gas storage mechanism (2) to a preset pressure;
the high-pressure gas storage mechanism (2) comprises: a first high-pressure gas storage unit (21) with an inlet and an outlet respectively communicated with the pressurization mechanism (1) and the pressure regulating mechanism (3), wherein the inlet and the outlet of the first high-pressure gas storage unit (21) are respectively provided with a first electromagnetic valve (211) and a second electromagnetic valve (212), and the first high-pressure gas storage unit (21) is also provided with a first pressure sensor (213);
a second high-pressure gas storage unit (22) with an inlet and an outlet respectively communicated with the pressurization mechanism (1) and the pressure regulating mechanism (3), wherein the inlet and the outlet of the second high-pressure gas storage unit (22) are respectively provided with a third electromagnetic valve (221) and a fourth electromagnetic valve (222), and the second high-pressure gas storage unit (22) is also provided with a second pressure sensor (223);
the first air valve controller (23) is electrically connected with the first electromagnetic valve (211), the fourth electromagnetic valve (222) and the first pressure sensor (213), and is used for receiving the gas pressure information of the first high-pressure gas storage unit (21) transmitted by the first pressure sensor (213) and controlling the opening and closing of the first electromagnetic valve (211) and the fourth electromagnetic valve (222) according to the gas pressure information of the first high-pressure gas storage unit (21);
the second gas valve controller (24) is electrically connected with the second electromagnetic valve (212), the third electromagnetic valve (221) and the second pressure sensor (223) and is used for receiving the gas pressure information of the second high-pressure gas storage unit (22) transmitted by the second pressure sensor (223) and controlling the opening and closing of the second electromagnetic valve (212) and the third electromagnetic valve (221) according to the gas pressure information of the second high-pressure gas storage unit (22);
the standard natural gas flowmeter (4) is used for being communicated with a natural gas flowmeter (M) to be calibrated so as to calibrate the natural gas flowmeter (M) to be calibrated;
the pressure regulating mechanism (3) is used for regulating the pressurized natural gas to the working pressure matched with the natural gas flowmeter (M) to be calibrated;
the low-pressure gas storage mechanism (5) is arranged between the natural gas flowmeter (M) to be calibrated and the pressurization mechanism (1), the inlet of the low-pressure gas storage mechanism (5) is communicated with the natural gas flowmeter (M) to be calibrated, and the outlet of the low-pressure gas storage mechanism (5) is communicated with the pressurization mechanism (1);
wherein the first high-pressure gas storage unit (21) is used for delivering natural gas meeting the preset pressure to the pressure regulating mechanism (3) when the gas pressure of the second high-pressure gas storage unit (22) is lower than the preset pressure, and the pressurization mechanism (1) is used for increasing the gas pressure of the second high-pressure gas storage unit (22) to the preset pressure when the gas pressure of the second high-pressure gas storage unit (22) is lower than the preset pressure;
the second high-pressure gas storage unit (22) is used for conveying the natural gas meeting the preset pressure to the pressure regulating mechanism (3) when the gas pressure of the first high-pressure gas storage unit (21) is lower than the preset pressure, and the pressurization mechanism (1) is used for increasing the gas pressure of the first high-pressure gas storage unit (21) to the preset pressure when the gas pressure of the first high-pressure gas storage unit (21) is lower than the preset pressure.
2. The apparatus according to claim 1, wherein the first high pressure gas storage unit (21) comprises: a first inlet trunk line (21a), a first outlet trunk line (21b), a plurality of first natural gas branch lines (21c), a plurality of first gas tanks (21 d);
the first intake main line (21a) is communicated with the supercharging mechanism (1), and the first electromagnetic valve (211) is further arranged on the first intake main line (21 a);
the first air outlet main line (21b) is communicated with the pressure regulating mechanism (3), and the second electromagnetic valve (212) is further arranged on the first air outlet main line (21 b);
a plurality of the first natural gas branch lines (21c) are provided in parallel between the first intake trunk line (21a) and the first outlet trunk line (21 b);
the inlet and outlet of the first air storage tank (21d) are communicated with the corresponding first natural gas branch line (21c), and the inlet and outlet of the first air storage tank (21d) are respectively provided with a manual valve;
and, the first pressure sensor (213) is provided on at least one of the first air tanks (21 d).
3. The apparatus according to claim 1, wherein the second high pressure gas storage unit (22) comprises: a second inlet trunk line (22a), a second outlet trunk line (22b), a plurality of second natural gas branch lines (22c), a plurality of second gas tanks (22 d);
the second intake trunk line (22a) is communicated with the supercharging mechanism (1), and the third electromagnetic valve (221) is further provided on the second intake trunk line (22 a);
the second air outlet main line (22b) is communicated with the pressure regulating mechanism (3), and the fourth electromagnetic valve (222) is further arranged on the second air outlet main line (22 b);
a plurality of said second natural gas branch lines (22c) are arranged in parallel between said second inlet trunk line (22a) and said second outlet trunk line (22 b);
the inlet and the outlet of the second gas storage tank (22d) are communicated with the corresponding second natural gas branch line (22c), and the inlet and the outlet of the second gas storage tank (22d) are respectively provided with a manual valve;
and, the second pressure sensor (223) is provided on at least one of the second air tanks (22 d).
4. The device according to claim 1, characterized in that the standard natural gas flowmeter (4) and the natural gas flowmeter (M) to be calibrated are arranged in sequence along the flow direction of the natural gas after pressure regulation.
5. The device according to claim 4, characterized in that the pressure regulating mechanism (3) comprises: the inlet and the outlet of the pressure regulating tank (31) are respectively communicated with the high-pressure gas storage mechanism (2) and the standard natural gas flowmeter (4);
a third pressure sensor (311) provided on the pressure-regulating tank (31);
the fifth electromagnetic valve (312) is arranged at the emptying port of the pressure regulating tank (31), and the fifth electromagnetic valve (312) is used for discharging the pressurized natural gas in the pressure regulating tank (31);
a sixth electromagnetic valve (313) arranged at the outlet of the pressure regulating tank (31);
and the third gas valve controller (32) is respectively connected with the third pressure sensor (311), the fifth electromagnetic valve (312) and the sixth electromagnetic valve (313) and is used for receiving the gas pressure information of the pressure regulating tank (31) transmitted by the third pressure sensor (311) and controlling the opening and closing of the fifth electromagnetic valve (312) and the sixth electromagnetic valve (313) according to the gas pressure information of the pressure regulating tank (31).
6. The device according to claim 5, characterized in that the vent of the pressure regulating tank (31) is connected to the inlet of the low pressure gas storage means (5) by a pipe.
7. The device according to any one of claims 1 to 6, characterized in that said pressurization means (1) comprise at least one centrifugal gas compressor.
8. The apparatus of claim 1, wherein the predetermined pressure is 0.5Mpa to 1.8Mpa greater than the operating pressure.
9. The apparatus of claim 8, wherein the predetermined pressure is 0.9Mpa to 1.2Mpa greater than the operating pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967728.XA CN110857874B (en) | 2018-08-23 | 2018-08-23 | Natural gas flowmeter calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967728.XA CN110857874B (en) | 2018-08-23 | 2018-08-23 | Natural gas flowmeter calibrating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110857874A CN110857874A (en) | 2020-03-03 |
| CN110857874B true CN110857874B (en) | 2021-03-09 |
Family
ID=69635212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810967728.XA Active CN110857874B (en) | 2018-08-23 | 2018-08-23 | Natural gas flowmeter calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110857874B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791985A (en) * | 2014-01-16 | 2014-05-14 | 宁波创盛仪表有限公司 | Static state standard cubic meter calibration device and calibration method of static state standard cubic meter calibration device |
| CN203656574U (en) * | 2013-12-19 | 2014-06-18 | 上海加力气体有限公司 | Instrument gas supply device |
| CN103868571A (en) * | 2014-04-03 | 2014-06-18 | 核工业理化工程研究院 | Calibration device for gas flow orifice plate |
| CN105021262A (en) * | 2015-08-25 | 2015-11-04 | 重庆市计量质量检测研究院 | Gas flow calibration method with temperature pressure adjusting capacity |
| CN108225443A (en) * | 2016-12-14 | 2018-06-29 | 中国石油天然气股份有限公司 | Gas discharge detects circuit device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3989629B2 (en) * | 1998-07-21 | 2007-10-10 | 株式会社コスモ計器 | Flow inspection device |
| US7155956B2 (en) * | 2004-01-23 | 2007-01-02 | Terasen Gas Inc. | Medium, method and system for proving a turbine meter |
-
2018
- 2018-08-23 CN CN201810967728.XA patent/CN110857874B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203656574U (en) * | 2013-12-19 | 2014-06-18 | 上海加力气体有限公司 | Instrument gas supply device |
| CN103791985A (en) * | 2014-01-16 | 2014-05-14 | 宁波创盛仪表有限公司 | Static state standard cubic meter calibration device and calibration method of static state standard cubic meter calibration device |
| CN103868571A (en) * | 2014-04-03 | 2014-06-18 | 核工业理化工程研究院 | Calibration device for gas flow orifice plate |
| CN105021262A (en) * | 2015-08-25 | 2015-11-04 | 重庆市计量质量检测研究院 | Gas flow calibration method with temperature pressure adjusting capacity |
| CN108225443A (en) * | 2016-12-14 | 2018-06-29 | 中国石油天然气股份有限公司 | Gas discharge detects circuit device |
Non-Patent Citations (1)
| Title |
|---|
| 高压气体流量计量标准装置研制;赵普俊 等;《天然气工业》;20100930;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110857874A (en) | 2020-03-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103365306B (en) | A kind of high-speed wind tunnel special test compressed air require adjusting means and method | |
| CN105606355B (en) | A method of detection aqueous vapor solenoid valve comprehensive performance | |
| CN108061624B (en) | The air mass flow and seal tightness test platform and test method of aerial motor spare part | |
| CN101813237B (en) | Hydraulic CNG (Compressed Natural Gas) gas filling substation and pipeline system, control system and control method thereof | |
| JP2007092927A (en) | Gas feeder | |
| CN201992346U (en) | Liquefied natural gas injection machine | |
| CN208653742U (en) | It is a kind of sealing and the testing integrated machine of pulse | |
| CN106523916A (en) | High-flow liquid medium combined supply system | |
| CN106121863B (en) | A kind of cryogen variable working condition pump pressure type transport system | |
| KR20200086634A (en) | Device and method for filling tanks with pressurized gas | |
| WO2014134327A1 (en) | Conveying system for injecting material at a convey line pressure | |
| MX2011010034A (en) | Electronic proportioner using continuous metering and correction. | |
| CN102445399A (en) | Pulse test bench and pressurizer | |
| US20200217284A1 (en) | Pressure-regulating device for a fuel consumption measurement system and fuel consumption measurement system | |
| CN110857874B (en) | Natural gas flowmeter calibrating device | |
| CN102182916A (en) | Liquefied natural gas filling machine | |
| CN110857878B (en) | Natural gas flowmeter calibration method | |
| CN112392707A (en) | Fluid pressure control device | |
| CN215374397U (en) | System for detecting air tightness of refrigerator | |
| CN107532498A (en) | Automatic performance for diesel exhaust gas treatment fluid proportioner is adjusted | |
| CN115524212A (en) | IV type hydrogen storage bottle double pump water fatigue test machine | |
| CN204228243U (en) | A kind of online feed liquid flowmeter supervising device | |
| CN107933954B (en) | Oil tank oil transportation and consumption simulation system | |
| CN107065944A (en) | A kind of testing equipment of simulation water flowed fluctuation | |
| CN104843195A (en) | Verifying device and usage method thereof |
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 |