CN110864770A - Gas waist wheel starting flow testing equipment and testing method thereof - Google Patents
Gas waist wheel starting flow testing equipment and testing method thereof Download PDFInfo
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- CN110864770A CN110864770A CN201911141094.3A CN201911141094A CN110864770A CN 110864770 A CN110864770 A CN 110864770A CN 201911141094 A CN201911141094 A CN 201911141094A CN 110864770 A CN110864770 A CN 110864770A
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- measuring
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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
- 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
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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
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/13—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters using a reference counter
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- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
A gas waist wheel initial flow test device and a test method thereof comprise a fan, a measuring mechanism and a mechanism to be tested which are connected in sequence, wherein a test meter to be measured is placed in the mechanism to be tested, and the initial flow of the test meter to be measured in the mechanism to be tested can be detected through the measuring mechanism; the measuring mechanism comprises a glass rotameter, the mechanism to be measured comprises an instrument base plate and a test meter, the test meter is placed on the instrument base plate, and the fan, the glass rotameter and the instrument base plate are sequentially connected through a hose; when the glass rotameter is used, the fan is turned on, and the starting flow of the test meter can be measured through scales displayed on the glass rotameter.
Description
Technical Field
The invention relates to the field of industrial automation, in particular to a gas waist wheel initial flow testing device and a testing method thereof.
Background
The gas waist wheel flowmeter is mainly used for continuously or intermittently measuring the gas or liquid flow in a pipeline, belongs to a high-precision metering instrument, and can push the minimum flow value when a water meter starts to rotate to be called initial flow.
In the industry field of the flow meters, the initial flow of the flow meter is written in the specifications when the flow meter is sold on the market, namely the flow meter can start to measure when the flow is large, and consumers expect that the flow meter can start to measure as long as a medium flows through the flow meter, but the requirement cannot be met under ideal conditions, so that the low initial flow value of the flow meter is a more key selection point for purchasing the flow meter by the consumers.
However, for the industry of gas waist wheel flowmeters, there is no unified or recognized device for testing the initial flow, and there is no low-cost flow testing device suitable for medium and small enterprises in the market.
Disclosure of Invention
The invention aims to solve the problem of making up for the defects of the prior art and provides a gas waist wheel initial flow testing device and a testing method thereof, wherein the gas waist wheel initial flow testing device can measure the initial flow of a flowmeter and is low in cost.
The technical problem of the invention can be solved by the following technical scheme:
a gas waist wheel start flow test device comprises a fan, a measuring mechanism and a mechanism to be tested which are sequentially connected, wherein a test meter to be measured is placed in the mechanism to be tested, and the start flow of the test meter to be measured in the mechanism to be tested can be detected through the measuring mechanism;
the measuring mechanism comprises a glass rotameter, the mechanism to be measured comprises an instrument base plate and a test meter, the test meter is placed on the instrument base plate, and the fan, the glass rotameter and the instrument base plate are sequentially connected through a hose;
when the glass rotameter is used, the fan is turned on, and the starting flow of the test meter can be measured through scales displayed on the glass rotameter.
Further, the measuring mechanism comprises a plurality of channels, the glass rotameters are arranged on the plurality of channels, the glass rotameters are arranged on each channel, the measuring ranges of the glass rotameters are sequentially increased, and the start flow of the test meters with different calibers can be measured.
Further, each channel comprises a ball valve switch for controlling whether the gas of the glass rotameter passes through the channel or not.
Further, a plurality of channels in the measuring mechanism should be selected to be opened when in use.
Further, the measuring mechanism comprises a first measuring channel and a second measuring channel for measuring test meters with different calibers, the tail ends of the first measuring channel and the second measuring channel respectively comprise a first instrument seat disk and a second instrument seat disk, and the first measuring channel and the second measuring channel respectively comprise a first measuring ball valve and a second measuring ball valve which are used for controlling whether gas passes through or not.
Further, the first measuring channel and the second measuring channel should be selected to be opened when in use.
Further, the fan comprises a first pipeline and a second pipeline, the first pipeline and the second pipeline are respectively provided with a first pipeline ball valve and a second pipeline ball valve which are used for controlling whether gas passes through or not, the first pipeline is connected with the measuring mechanism and then combined with the second pipeline to form a pipeline, and the tail end of the combined pipeline is connected with the mechanism to be measured.
Further, the first pipeline is divided into two channels, one channel is connected with the measuring mechanism, and the tail end of the other channel is provided with a deflation ball valve.
Further, the air storage tank is arranged behind the fan and has a pressure stabilizing effect.
A test method for testing by utilizing the gas waist wheel initial flow test device comprises the steps of placing the test meter on the instrument base plate, starting the fan, adjusting the knob on the glass rotameter to enable gas to slowly pass through, observing the test meter, stopping adjusting the knob on the glass rotameter when the test meter starts to rotate, and representing the initial flow of the test meter by the scale displayed on the glass rotameter after the rotor in the glass rotameter is stabilized.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a gas roots start flow test device and a test method thereof, which can detect the start flow of a gas roots flowmeter, calculate the start flow of the gas roots flowmeter by adopting a glass rotameter, have low manufacturing cost, simple operation and higher accuracy and solve the problem of the start flow test of the gas roots flowmeter.
Drawings
Fig. 1 is a schematic view of the overall structure of a gas lumbar wheel start-up flow test device provided by the present invention.
Reference numbers in the figures:
1 fan, 2 gas storage tank, 3 blowdown valve, 4 first pipeline, 5 second pipeline, 6 first pipeline ball valve, 7 measuring mechanism, 8 gassing ball valve, 9 support frame, 10 transparent hose, 111 first ball valve switch, 112 second ball valve switch, 113 third ball valve switch, 114 fourth ball valve switch, 12 first glass rotameter, 13 second glass rotameter, 14 third glass rotameter, 15 fourth glass rotameter, 16 second pipeline ball valve, 17 mechanism to be measured, 18 first measuring channel, 19 first measuring ball valve, 20 first instrument seat dish, 21 first test meter, 22 second measuring channel, 23 second measuring ball valve, 24 second instrument seat dish, 25 second test meter.
Detailed Description
The present invention will be further described below based on preferred embodiments with reference to the accompanying drawings.
In addition, the various components on the drawings are enlarged (thick) or reduced (thin) for convenience of understanding, but this is not intended to limit the scope of the present invention.
Singular references also include plural references and vice versa.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are usually placed when the products of the present invention are used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, the present invention should not be construed as being limited. Furthermore, the terms first, second, etc. may be used in the description to distinguish between different elements, but these should not be limited by the order of manufacture or by importance to be understood as indicating or implying any particular importance, and their names may differ between the detailed description of the invention and the claims.
The terminology used in the description is for the purpose of describing the embodiments of the invention and is not intended to be limiting of the invention. It is also to be understood that, unless otherwise expressly stated or limited, the terms "disposed," "connected," and "connected" are intended to be open-ended, i.e., may be fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. Those skilled in the art will specifically understand that the above description is intended to be within the meaning of the present invention.
The invention provides a gas waist wheel start flow testing device which comprises a fan 1, a measuring mechanism 7 and a mechanism to be tested 17 which are sequentially connected, wherein a test meter to be tested is placed in the mechanism to be tested 17, and the start flow of the test meter to be tested in the mechanism to be tested 17 can be detected through the measuring mechanism 7 when the fan 1 is turned on.
Specifically, a gas storage tank 2, a first pipeline 4 and a second pipeline 5 are arranged between the fan 1 and the measuring mechanism 7, the fan 1 and the gas storage tank 2 are connected through a hose, the gas storage tank 2 comprises a sewage discharge valve 3, and the gas storage tank 2 can adjust the airflow stability and has the function of pressure stabilization; the outlet end of the gas storage tank 2 is divided into a first pipeline 4 and a second pipeline 5, the starting end of the first pipeline 4 is provided with a first pipeline ball valve 6 which can control whether gas in the first pipeline 4 passes through or not, and the starting end of the second pipeline 5 is provided with a second pipeline ball valve 16 which can control whether gas in the second pipeline 5 passes through or not; the first pipeline 4 is divided into two channels, one channel is connected with the measuring mechanism 7, the tail end of the other channel is provided with a gas-discharging ball valve 8, and the gas-discharging ball valve 8 can discharge gas in the first pipeline 4; the ends of the measuring means 7 merge into a first pipe 4 and join into a pipe with the end of a second pipe 5 and finally connect to the means to be measured 17.
The measuring mechanism 7 comprises a supporting frame 9, a transparent hose 10, ball valve switches, a first glass rotameter 12, a second glass rotameter 13, a third glass rotameter 14 and a fourth glass rotameter 15, wherein one channel of the first pipeline 4 after passing through the first pipeline ball valve 6 is divided into four channels formed by the transparent hose 10, each channel is respectively provided with a glass rotameter with sequentially increased range, namely the first glass rotameter 12, the second glass rotameter 13, the third glass rotameter 14 and the fourth glass rotameter 15 are sequentially arranged on the channels, the four glass rotameters are all fixedly arranged on the supporting frame 9, the transparent hoses 10 of the four channels are respectively provided with the ball valve switches which are respectively a first ball valve switch 111, a second ball valve switch 112, a third ball valve switch 113 and a fourth ball valve switch 114 for controlling the glass rotameters with which gas can pass through the channel, that is, the first ball switch 111 controls the gas passing through the first glass rotameter 12, the second ball switch 112 controls the gas passing through the second glass rotameter 13, the third ball switch 113 controls the gas passing through the third glass rotameter 14, and the fourth ball switch 114 controls the gas passing through the fourth glass rotameter 15.
When the glass rotameter is used, the ball valve switches on the four channels can be opened alternatively, namely only one of the first ball valve switch 111, the second ball valve switch 112, the third ball valve switch 113 and the fourth ball valve switch 114 can be opened, and if one of the ball valve switches is opened, the glass rotameter corresponding to the ball valve switch is used for measuring the initial flow of the test meter.
The four channels are combined into a first pipeline 4 after passing through the glass rotameter, and the tail end of the first pipeline 4 and the tail end of the second pipeline ball valve 16 are combined into a channel and then connected into the inlet end of the mechanism to be measured 17.
The mechanism to be measured 17 comprises a first measuring channel 18, a first measuring ball valve 19, a first meter seat plate 20, a first test meter 21, a second measuring channel 22, a second measuring ball valve 23, a second meter seat plate 24 and a second test meter 25, the mechanism to be measured 17 is divided into two channels, and test meters with different calibers can be measured respectively, during measurement, the two channels can only be selected to be opened for testing, specifically, the two channels are respectively a first measuring channel 18 and a second measuring channel 22, the first measuring channel 18 comprises the first measuring ball valve 19, the first meter seat plate 20 and the first test meter 21, the second measuring channel 22 comprises the second measuring ball valve 23, the second meter seat plate 24 and the second test meter 25, specifically, the first meter seat plate 20 is arranged at the tail end of the first measuring channel 18, the first test meter 21 can be placed on the first meter seat plate 20, so as to detect the initial flow of the first test meter 21, a first measuring ball valve 19 is arranged in the first measuring channel 18 and can control whether gas in the first measuring channel 18 passes or not; the second measuring channel 22 is provided at its end with a second meter mounting plate 24 on which a second meter 25 can be placed to detect the initial flow of the second meter 25, and the second measuring channel 22 is provided with a second measuring ball valve 23 for controlling the passage of gas through the second measuring channel 22.
The first measurement channel 18 and the second measurement channel 22 can respectively test meters with different calibers, and the first measurement channel 18 can test a test meter with a larger caliber, namely, the first test meter 21 placed on the first instrument seat disk 20 is a test meter with a larger caliber, for example, a test meter with DN50-DN150 calibers; the second measurement channel 22 can test a smaller caliber test meter, i.e., the second test meter 25 placed on the second meter bed 24 is a smaller caliber test meter, e.g., a DN15-DN50 caliber test meter. Only one of the first measurement channel 18 and the second measurement channel 22 can be selected to test one test meter, and the two channels cannot be tested together, and the working principle of the first measurement channel 18 is taken as an example for further detailed description.
The invention provides a gas waist wheel initial flow testing device, which comprises the following testing methods:
before testing, all valves are kept in a closed state;
placing a first test meter 21 on the first meter bed 20;
the fan 1 is started, the generated gas enters the gas storage tank 2 through the hose, and the gas storage tank 2 can adjust the gas flow to be stable and has the function of stabilizing the pressure;
opening the second pipeline ball valve 16 and the first measuring ball valve 19 to enable the gas to pass through the second pipeline 5 and pass through the first test meter 21 on the first measuring channel 18, and starting running by the first test meter 21 for 5-10 minutes;
after the sports car is finished, opening the first pipeline ball valve 6 and the deflation ball valve 8, and closing the second pipeline ball valve 16 to enable the gas to pass through the first pipeline 4;
after the first test meter 21 completely stops rotating, the air release ball valve 8 is closed;
turning on a first ball valve switch 111, adjusting a knob on the first glass rotameter 12 to enable gas to pass slowly, paying attention to observe the first test meter 21, stopping adjusting the knob on the first glass rotameter 12 when the first test meter 21 starts to rotate, observing the first glass rotameter 12, and recording scales of the first glass rotameter 12 after an internal rotor of the first glass rotameter is stable, wherein data represented by the scales are initial flow of the first test meter 21;
if the rotor of the first glass rotameter 12 rises to the limit scale but the first test meter 21 is still not rotated, it is indicated that the range of the glass rotameter is small, and the glass rotameter with a large range needs to be replaced, at this time, the first ball valve switch 111 and the knobs on the first glass rotameter 12 are closed, and since the ranges of the first glass rotameter 12, the second glass rotameter 13, the third glass rotameter 14 and the fourth glass rotameter 15 are sequentially increased, the second ball valve switch 112, the third ball valve switch 113 and the fourth ball valve switch 114 can be sequentially opened, and the knobs on the second glass rotameter 13, the third glass rotameter 14 or the fourth glass rotameter 15 are correspondingly adjusted to slowly pass the gas, until the first test meter 21 starts to rotate, it represents that the first test meter 21 can be measured by using the current glass rotameter, the subsequent measurement step may be performed as described above for step 7;
after the test is finished, the fan 1 is firstly closed, then all the opened ball valves are closed, and the test of the initial flow of the test meter is finished.
The second measuring channel 22 operates on the same principle as the first measuring channel 18, and the operation steps thereof are only to replace the first measuring ball valve 19, the first meter seat plate 20 and the first test meter 21 with the second measuring ball valve 23, the second meter seat plate 24 and the second test meter 25, and the operation principle of the second measuring channel 22 will be further described in detail below.
The invention provides a gas waist wheel initial flow testing device, which comprises the following testing methods:
before testing, all valves are kept in a closed state;
placing a second test meter 25 on the second meter bed disk 24;
the fan 1 is started, the generated gas enters the gas storage tank 2 through the hose, and the gas storage tank 2 can adjust the gas flow to be stable and has the function of stabilizing the pressure;
opening the second pipeline ball valve 16 and the second measuring ball valve 23 to enable the gas to pass through the second pipeline 5 and pass through the second test meter 25 on the second measuring channel 22, and starting running by the second test meter 25 for 5-10 minutes;
after the sports car is finished, opening the first pipeline ball valve 6 and the deflation ball valve 8, and closing the second pipeline ball valve 16 to enable the gas to pass through the first pipeline 4;
after the second test meter 25 completely stops rotating, the air release ball valve 8 is closed;
turning on a first ball valve switch 111, adjusting a knob on the first glass rotameter 12 to enable gas to pass slowly, simultaneously paying attention to observing the second test meter 25, stopping adjusting the knob on the first glass rotameter 12 when the second test meter 25 starts to rotate, observing the first glass rotameter 12, and recording scales of the first glass rotameter 12 after an inner rotor of the first glass rotameter is stable, wherein data represented by the scales are initial flow of the second test meter 25;
if the rotor of the first glass rotameter 12 rises to the limit scale but the second test meter 25 is still not rotated, it is indicated that the range of the glass rotameter is small, and the glass rotameter with a large range needs to be replaced, at this time, the first ball valve switch 111 and the knobs on the first glass rotameter 12 are closed, and since the ranges of the first glass rotameter 12, the second glass rotameter 13, the third glass rotameter 14 and the fourth glass rotameter 15 are sequentially increased, the second ball valve switch 112, the third ball valve switch 113 and the fourth ball valve switch 114 can be sequentially opened, and the knobs on the second glass rotameter 13, the third glass rotameter 14 or the fourth glass rotameter 15 are correspondingly adjusted to slowly pass the gas, until the second test meter 25 starts to rotate, it represents that the second test meter 25 can be started to measure the flow rate by using the current glass rotameter, the subsequent measurement step may be performed as described above for step 7;
after the test is finished, the fan 1 is firstly closed, then all the opened ball valves are closed, and the test of the initial flow of the test meter is finished.
While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit of the invention, and it is intended to claim all such changes and modifications as fall within the scope of the appended claims.
Claims (10)
1. The utility model provides a gaseous lumbar gear flow test equipment that starts which characterized in that:
the device comprises a fan (1), a measuring mechanism (7) and a mechanism to be measured (17) which are sequentially connected, wherein a test meter to be measured is placed in the mechanism to be measured (17), and the starting flow of the test meter to be measured in the mechanism to be measured (17) can be detected through the measuring mechanism (7);
the measuring mechanism (7) comprises a glass rotameter, the mechanism to be measured (17) comprises an instrument base plate and a test meter, the test meter is placed on the instrument base plate, and the fan (1), the glass rotameter and the instrument base plate are sequentially connected through a hose;
when the test meter is used, the fan (1) is turned on, and the starting flow of the test meter can be measured through scales displayed on the glass rotameter.
2. The gas roots pick-up flow test device of claim 1, wherein the measuring mechanism (7) comprises a plurality of channels, the glass rotameters are provided in plurality, each channel is provided with the glass rotameter, and the measuring ranges of the glass rotameters are sequentially increased to measure the pick-up flow of the test meters with different calibers.
3. A gas roots-actuated flow test device as claimed in claim 2, wherein each channel includes a ball valve switch for controlling the passage of gas through the glass rotameter in that channel.
4. A gas kidney wheel start flow test device according to claim 2, characterised in that the channels in the measuring means (7) are alternatively open in use.
5. A gas kidney wheel start flow test device according to claim 1, characterized in that the measuring mechanism (7) comprises a first measuring channel (18) and a second measuring channel (22) for measuring test meters of different calibers, the ends of the first measuring channel (18) and the second measuring channel (22) comprise a first meter seat disk (20) and a second meter seat disk (24), respectively, and the first measuring channel (18) and the second measuring channel (22) comprise a first measuring ball valve (19) and a second measuring ball valve (23), respectively, for controlling the passage of gas.
6. A gas kidney wheel start flow test device according to claim 5, characterised in that the first measurement channel (18) and the second measurement channel (22) are alternatively openable in use.
7. A gas lumbar wheel start flow test device according to claim 1, characterized in that the fan (1) comprises a first pipe (4) and a second pipe (5) at the back, the first pipe (4) and the second pipe (5) are respectively provided with a first pipe ball valve (6) and a second pipe ball valve (16) for controlling whether gas passes through, the first pipe (4) is connected with the measuring mechanism (7) and then combined with the second pipe (5) to form a pipe, and the combined pipe end is connected with the mechanism to be tested (17).
8. A gas kidney wheel start flow test device according to claim 7, characterized in that the first duct (4) is divided into two channels, one of which is connected to the measuring organ (7) and the other of which ends with a bleeder ball valve (8).
9. A gas waist wheel startup flow test device according to claim 1, characterized by comprising a gas tank (2), wherein the gas tank (2) is arranged after the fan (1) and has a pressure stabilizing effect.
10. A method for testing a gas roots activated flow meter according to any of claims 1 to 9, wherein the meter is placed on the meter base plate, the blower (1) is started, the knob of the glass rotameter is adjusted to let gas pass slowly, the meter is observed, the adjustment of the knob of the glass rotameter is stopped when the meter starts to rotate, and the scale displayed on the glass rotameter represents the activated flow of the meter after the rotor inside the glass rotameter is stabilized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911141094.3A CN110864770A (en) | 2019-11-20 | 2019-11-20 | Gas waist wheel starting flow testing equipment and testing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911141094.3A CN110864770A (en) | 2019-11-20 | 2019-11-20 | Gas waist wheel starting flow testing equipment and testing method thereof |
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| CN110864770A true CN110864770A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911141094.3A Pending CN110864770A (en) | 2019-11-20 | 2019-11-20 | Gas waist wheel starting flow testing equipment and testing method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201464003U (en) * | 2009-06-29 | 2010-05-12 | 中国计量学院 | Rotor flow meter calibrating device |
| CN206387479U (en) * | 2017-01-24 | 2017-08-08 | 中国石油化工股份有限公司天然气分公司计量研究中心 | It is a kind of to reduce the Natural gas flow meter verification apparatus that tube capacity improves the calibrating degree of accuracy |
| CN108709609A (en) * | 2018-07-09 | 2018-10-26 | 西安长庆科技工程有限责任公司 | A kind of natural gas big flow is real to flow calibrating installation and method |
| CN209589219U (en) * | 2019-05-06 | 2019-11-05 | 北京市计量检测科学研究院 | A kind of removable efficient combined-type Rotameter Calibrating Equipment |
-
2019
- 2019-11-20 CN CN201911141094.3A patent/CN110864770A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201464003U (en) * | 2009-06-29 | 2010-05-12 | 中国计量学院 | Rotor flow meter calibrating device |
| CN206387479U (en) * | 2017-01-24 | 2017-08-08 | 中国石油化工股份有限公司天然气分公司计量研究中心 | It is a kind of to reduce the Natural gas flow meter verification apparatus that tube capacity improves the calibrating degree of accuracy |
| CN108709609A (en) * | 2018-07-09 | 2018-10-26 | 西安长庆科技工程有限责任公司 | A kind of natural gas big flow is real to flow calibrating installation and method |
| CN209589219U (en) * | 2019-05-06 | 2019-11-05 | 北京市计量检测科学研究院 | A kind of removable efficient combined-type Rotameter Calibrating Equipment |
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Application publication date: 20200306 |