CN216206880U - Metering accuracy calibrating device of turbine flowmeter for gas flow detection - Google Patents
Metering accuracy calibrating device of turbine flowmeter for gas flow detection Download PDFInfo
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Abstract
A measuring accuracy calibrating device of a turbine flowmeter for gas flow detection comprises a variable frequency centrifugal fan, a ball valve, a gas flow standard meter, a turbine flowmeter connecting pipe for detected gas flow detection and an exhaust pipe, the variable-frequency centrifugal fan is connected with one end of the ball valve through a first pipeline, the other end of the ball valve is connected with the air inlet end of the gas flow standard meter through a second pipeline, the air outlet end of the gas flow standard meter is connected with one end of a detected gas flow detection turbine meter connecting pipe, the other end of the detected gas flow detection turbine meter connecting pipe is provided with an air inlet flange connected with an air inlet of the detected gas flow detection turbine meter, and a detected gas flow detection turbine meter exhaust pipe, which is provided with an air outlet flange connected with an air outlet of the detected gas flow detection turbine meter, is arranged at the downstream of the detected gas flow detection turbine meter connecting pipe. The utility model can simulate various actual gas delivery conditions and adapt to the verification requirements of various turbine flowmeters for gas flow detection.
Description
Technical Field
The utility model relates to a calibrating device, in particular to a metering accuracy calibrating device of a turbine flowmeter for gas flow detection, and belongs to the technical field of production and manufacturing of calibrating devices of measuring instruments.
Background
As shown in the block diagram of the turbine flowmeter in the prior art in fig. 1 and the schematic structure diagram of the turbine flowmeter in the prior art in fig. 2:
the prior art turbine flow meter mainly comprises a transmitter and a display meter 10, a so-called secondary meter;
the transmitter comprises a turbine flow sensor 20, a magneto-electric conversion device 30 and a preamplifier, wherein the turbine flow sensor 20 mainly comprises a shell 21, a turbine 22 and other parts, the shell 21 is generally made of non-magnetic stainless steel and is directly connected with a fluid pipeline, and fluid flows through the shell; the turbine 22 is mounted in the housing, and the blades of the turbine are typically made of magnetically conductive stainless steel and are at an angle to the direction of flow of the fluid;
the magnetoelectric conversion device 30 is composed of a permanent magnetic steel magnetic conduction rod and a coil thereof, and the like, is installed on the vertical surface of the turbine 22, and is used for converting the rotation condition of the turbine into an electric signal to be output.
The operating principle of the turbine flowmeter and the working process thereof can be described as follows:
when the turbine flowmeter is installed on a fluid conveying pipeline and fluid flows through a shell of the turbine flow sensor, because the turbine blades of the turbine flow sensor have a certain angle with the flow direction of the fluid, the impulse force of the fluid enables the turbine blades to have a rotation torque, the turbine blades can overcome the friction torque and the resistance of the fluid to rotate, the rotation speed of the turbine is in direct proportion to the flow speed under a certain condition, and the rotation speed of the turbine is stable after the torque is balanced;
the blades of the turbine have magnetic conductivity and are positioned in the magnetic field of a magnetoelectric conversion device consisting of a permanent magnetic steel magnetic conduction rod and a coil, so that the rotating turbine blades can cut magnetic lines of force and periodically change the magnetic flux of the coil, so that corresponding electric pulse signals are induced at two ends of the coil, the signals are amplified, shaped and digitally processed by a preamplifier to form continuous rectangular pulse waves with certain amplitude, and the instantaneous flow or the total amount of the fluid can be displayed after the pulse waves are transmitted to a display instrument.
Since the turbine flowmeter is based on such a principle and adopts such a structure, its measuring medium may be liquid or gas.
The density of the liquid is relatively stable, so that the liquid is relatively simple and convenient to calibrate as the calibrating medium, and most manufacturers of the turbine flow meters often use the liquid medium flow calibrating device to detect the metering accuracy of the turbine flow meters during calibration of the turbine flow meters.
However, because the density difference between liquid and gas is large, the strength of the flow measurement accuracy signal obtained by the turbine flow sensor in the liquid medium is not the same as the strength of the flow measurement accuracy signal obtained in the gas medium, so that the turbine flow meter calibrated by the liquid medium flow calibrating device is often subjected to large accuracy deviation or even normal flow detection when applied to the gas medium.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a measuring accuracy calibrating device of a turbine flowmeter for gas flow detection, aiming at:
the metering accuracy calibrating device using the gas detection medium is provided for the turbine flowmeter for gas flow detection, and is used for analyzing and calibrating the metering accuracy when the turbine flowmeter detects the gas flow, so that the accuracy and the applicability of the turbine flowmeter for gas flow detection on gas flow detection are improved.
In order to achieve the purpose, the utility model provides the following technical scheme:
a metering accuracy calibrating device of a turbine flowmeter for gas flow detection is used for analyzing and calibrating the metering accuracy of the turbine flowmeter for gas flow detection;
the gas flow detection turbine flowmeter comprises a turbine flow sensor, wherein the turbine flow sensor comprises a shell, and two ends of the shell are provided with connecting flanges;
the gas flow detects with turbine flowmeter's measurement precision calibrating installation, include:
the device comprises a variable-frequency centrifugal fan, a ball valve, a gas flow standard meter, a turbine flowmeter connecting pipe for detecting the flow of the gas to be detected and a turbine flowmeter exhaust pipe for detecting the flow of the gas to be detected;
wherein:
an air outlet of the variable-frequency centrifugal fan is connected with one end of the ball valve through a first pipeline;
the other end of the ball valve is connected with the gas inlet end of the gas flow standard meter through a second pipeline;
the gas outlet end of the gas flow standard meter is connected with one end of the detected gas flow detection turbine flowmeter connecting pipe, and the other end of the detected gas flow detection turbine flowmeter connecting pipe is provided with a gas inlet flange connected with a connecting flange on the gas inlet of the detected gas flow detection turbine flowmeter;
an air outlet flange used for being connected with a connecting flange on an air outlet of the gas flow detection turbine flowmeter to be detected is arranged on one side of the exhaust pipe of the gas flow detection turbine flowmeter, and the exhaust pipe of the gas flow detection turbine flowmeter is arranged at the downstream of the connecting pipe of the gas flow detection turbine flowmeter to be detected.
Further:
the length of the turbine flowmeter connecting pipe for detecting the flow of the detected gas is 0.95-1.05 m, and the exhaust pipe of the turbine flowmeter for detecting the flow of the detected gas is a straight pipe with the length of 0.45-0.55 m.
Further:
the turbine flowmeter connecting pipe for detecting the flow of the detected gas comprises a straight pipe, a reducing beam section and a splicing pipe;
the nominal diameter of the straight pipe is consistent with the nominal diameter of the gas outlet end of the gas flow standard meter, the nominal diameter of the splicing sleeve is consistent with the nominal diameter of the gas inlet of the gas flow detection turbine flowmeter, the nominal diameter of one end of the reducing binding section is consistent with the nominal diameter of the straight pipe, and the nominal diameter of the other end of the reducing binding section is consistent with the nominal diameter of the splicing sleeve;
the straight pipe, the reducing binding section and the splicing sleeve are connected to form a coaxial long pipe, wherein the gas outlet end of the gas flow standard meter is connected with one end of the splicing sleeve through the reducing binding section after passing through one section of the straight pipe, and the other end of the splicing sleeve is used for being connected with the gas inlet flange.
Optionally:
the straight pipe, the reducing beam joint and the splicing sleeve are made of stainless steel respectively, and the exhaust pipe of the turbine flowmeter for detecting the flow of the gas to be detected is also made of stainless steel.
Further:
the first pipeline comprises a straight-through pipe and a rubber hose, the straight-through pipe is a stainless steel pipe, and the stainless steel straight-through pipe is connected with the ball valve after being connected with a section of the rubber hose;
the second pipeline is a stainless steel straight pipe with the length of 0.75-0.85 m.
Further:
the nominal diameters of the two ends of the ball valve are DN50 respectively, the nominal diameters of the air inlet end and the air outlet end of the gas flow standard meter are DN50 respectively, and the nominal diameters of the first pipeline and the second pipeline are DN50 respectively.
Optionally, the gas flow standard meter has a precision of 0.5 level.
Optionally, the gas flow standard meter is a wet flowmeter.
Further:
the measurement accuracy calibrating installation of turbine flowmeter for gas flow detects still include:
a table and/or a support;
the workstation and/or the support is used for the installation fixed with support frequency conversion centrifugal fan the ball valve gas flow standard meter the turbine flowmeter connecting pipe is used in the gas flow detection of being examined the turbine flowmeter blast pipe is used in the gas flow detection of being examined, and first pipeline the second pipeline with be examined the turbine flowmeter is used in the gas flow detection.
Further:
the detected gas flow rate detection turbine flowmeter is any one of those whose nominal diameters at both ends of the casing are DN40, DN50, or DN65, respectively.
Compared with the prior art, the utility model has the beneficial effects and the progress that:
1) the utility model provides a measuring accuracy calibrating device of a turbine flowmeter for gas flow detection, which comprises a variable frequency centrifugal fan, a ball valve, a gas flow standard meter, a turbine flowmeter connecting pipe for detected gas flow detection and an exhaust pipe, wherein the variable frequency centrifugal fan is connected with one end of the ball valve through a first pipeline, the other end of the ball valve is connected with the gas inlet end of the gas flow standard meter through a second pipeline, the gas outlet end of the gas flow standard meter is connected with one end of the turbine flowmeter connecting pipe for detected gas flow detection, the other end of the turbine flowmeter connecting pipe for detected gas flow detection is provided with a gas inlet flange connected with the gas inlet of the turbine flowmeter for detected gas flow detection, the exhaust pipe of the turbine flowmeter for detected gas flow detection is arranged at the downstream of the turbine flowmeter connecting pipe for detected gas flow detection, and one side of the exhaust pipe of the turbine flowmeter for detected gas flow detection is provided with a gas flow detection outlet connected with the detected gas flow detection An air outlet flange of an air outlet of the turbine flowmeter is measured;
2) according to the metering accuracy calibrating device of the turbine flowmeter for gas flow detection, provided by the utility model, on the premise of minimizing the cost, the gas motion with various flow rates and flow velocities can be simulated through the combination of the variable-frequency centrifugal fan and the ball valve, and the accuracy of the turbine flowmeter for gas flow detection can be obtained by comparing the gas flow standard meter with the instantaneous flow and the total amount of gas detected by the turbine flowmeter for gas flow detection, so that the calibrating requirement of the accuracy of the turbine flowmeter for gas flow detection is met, and a good testing platform is provided for the analysis research and further improvement of the performance, the accuracy and the applicability of the turbine flowmeter for gas flow detection;
3) the metering accuracy calibrating device of the turbine flowmeter for gas flow detection, provided by the utility model, is novel, unique, simple and compact in structure, convenient to manufacture, material-saving, economical, practical, convenient and flexible to use, can simulate various actual gas conveying conditions, is suitable for calibrating requirements of the turbine flowmeter for gas flow detection in various specifications and sizes, and can provide accurate and credible calibration data for metering accuracy calibration of the turbine flowmeter for gas flow detection, so that the device has great popularization and application values.
Drawings
To more clearly illustrate the technical solution of the present invention, the drawings required for the embodiment of the present invention will be briefly described below.
It should be apparent that the drawings in the following description are only drawings of some embodiments of the utility model, and that other drawings can be obtained by those skilled in the art without inventive exercise, and the other drawings also belong to the drawings required by the embodiments of the utility model.
FIG. 1 is a block diagram of the components of a prior art turbine flow meter;
FIG. 2 is a schematic diagram of a prior art turbine flow meter;
fig. 3 is a schematic structural diagram of a measurement accuracy verification apparatus using a gas detection medium according to an embodiment of the present invention.
In the figure:
10-display instrument, 20-turbine flow sensor, 21-shell, 22-turbine, 30-magneto-electricity conversion device;
100-a turbine flowmeter for gas flow detection, 110-a connecting flange;
210-a variable frequency centrifugal fan, 220-a ball valve, 230-a gas flow standard meter, 240-a turbine flowmeter connecting pipe for detecting the flow of the gas to be detected, 241-an air inlet flange, 242-a straight pipe, 243-a reducing bundle joint, 244-a connecting pipe, 250-a turbine flowmeter exhaust pipe for detecting the flow of the gas to be detected, 251-an air outlet flange, 260-a first pipeline, 261-a straight pipe, 262-a rubber hose, 270-a second pipeline and 280-a bracket.
Detailed Description
In order to make the objects, technical solutions, advantages and significant progress of the embodiments of the present invention clearer and more obvious, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings provided in the embodiments of the present invention, it is obvious that all the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
It should be noted that:
the terms "first," "second," and "third" (if any), etc. in the description and claims of the present invention and the accompanying drawings of embodiments of the present invention are used for distinguishing between different objects and not for describing a particular order;
furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements, but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is to be understood that:
in the description of the embodiments of the present invention, the terms "upper", "lower", "top", "bottom", and other indicative orientations or positions are only used for describing the orientations or positional relationships based on the embodiments of the present invention and are used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the devices or elements described must have a specific orientation, a specific orientation configuration and operation, and therefore, the present invention should not be construed as being limited thereto.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, movably connected, or integrated; the term "a" or "an" refers to a compound that can be directly connected or indirectly connected through an intermediate, and can be used in combination with or without other elements, unless otherwise specifically limited, and the specific meaning of the term in the present invention can be understood by those skilled in the art according to specific situations.
It should be further noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.
The technical means of the present invention will be described in detail below with specific examples.
Examples
The embodiment provides a measurement accuracy calibrating device of a turbine flowmeter for gas flow detection, which is used for analyzing and calibrating the measurement accuracy of the turbine flowmeter for gas flow detection.
Fig. 3 is a schematic structural diagram of a measurement accuracy verification apparatus using a gas detection medium according to an embodiment of the present invention:
the gas flow rate detecting turbine flowmeter 100 according to the present embodiment includes a turbine flow rate sensor (not shown) including a housing (not shown) having connecting flanges 110 at both ends;
the turbine flowmeter metering accuracy calibrating device for gas flow detection provided by the embodiment comprises:
frequency conversion centrifugal fan 210, ball valve 220, gas flow standard meter 230, the turbine flowmeter connecting pipe 240 for the gas flow detection to be examined and turbine flowmeter exhaust pipe 250 for the gas flow detection to be examined, wherein:
an air outlet of the variable frequency centrifugal fan 210 is connected with one end of the ball valve 220 through a first pipeline 260;
the other end of the ball valve 220 is connected with the gas inlet end of the gas flow standard meter 230 through a second pipeline 270;
the outlet end of the gas flow standard meter 230 is connected with one end of a turbine flowmeter connecting pipe 240 for detecting the flow of the gas to be detected, and the other end of the turbine flowmeter connecting pipe 240 for detecting the flow of the gas to be detected is provided with an inlet flange 241 for connecting with the connecting flange 110 on the inlet of the turbine flowmeter 100 for detecting the flow of the gas to be detected;
an outlet flange 251 for connection to the connection flange 110 at the outlet of the gas flow rate detection turbine flowmeter 100 to be tested is provided on one side of the gas flow rate detection turbine flowmeter exhaust pipe 250, and the gas flow rate detection turbine flowmeter exhaust pipe 250 is provided downstream of the gas flow rate detection turbine flowmeter connection pipe 240.
From the above description, it can be seen that:
this embodiment passes through frequency conversion centrifugal fan, ball valve, gas flow standard meter, is examined the combination of gas flow for measuring turbine flowmeter connecting pipe and blast pipe, has constituted the measurement accuracy calibrating installation of gas flow for measuring turbine flowmeter with gas as the examination medium, wherein:
the gas flow detection device comprises a variable-frequency centrifugal fan, a gas flow standard meter, a detected gas flow detection turbine flowmeter connecting pipe, a detected gas flow detection turbine flowmeter exhaust pipe, a gas outlet flange and a gas outlet pipeline, wherein the variable-frequency centrifugal fan is connected with one end of a ball valve through a first pipeline, the other end of the ball valve is connected with the gas inlet end of the gas flow standard meter through a second pipeline, the gas outlet end of the gas flow standard meter is connected with one end of the detected gas flow detection turbine flowmeter connecting pipe, the other end of the detected gas flow detection turbine flowmeter connecting pipe is provided with the gas inlet flange connected with the gas inlet of the detected gas flow detection turbine flowmeter, the detected gas flow detection turbine flowmeter exhaust pipe is arranged at the downstream of the detected gas flow detection turbine flowmeter connecting pipe, and one side of the detected gas flow detection turbine flowmeter exhaust pipe is provided with the gas outlet flange connected with the gas flow detection turbine flowmeter;
after the detected gas flow detection turbine flowmeter is arranged and connected to the two sides of the detected gas flow detection turbine flowmeter connecting pipe and the detected gas flow detection turbine flowmeter exhaust pipe, the flow of the gas flow detection turbine flowmeter can be detected;
the metering accuracy calibrating device of the turbine flowmeter for gas flow detection provided by the embodiment, on the premise of minimizing cost, through the combination of the variable-frequency centrifugal fan and the ball valve, the gas motion of various flow rates and flow velocities can be simulated, instantaneous flow and total amount of gas obtained by comparing the gas flow standard meter with the turbine flowmeter for gas flow detection to be detected can be obtained, the accuracy of the turbine flowmeter for gas flow detection to be detected can be obtained, the verification requirement of the accuracy of the turbine flowmeter for gas flow detection to be detected can be met, the performance and the accuracy of the turbine flowmeter for gas flow detection can be realized, the analysis research and the further improvement of applicability can be realized, and a good test platform can be provided.
Further, in order to obtain a better verification effect and optimize the structure of the verification device, the metering accuracy verification device of the turbine flow meter for gas flow rate detection provided by the embodiment includes:
the length of the turbine flowmeter connecting pipe 240 for detecting the flow of the gas to be detected is selected to be 0.95-1.05 m;
the length of the exhaust pipe 250 of the turbine flowmeter for detecting the flow rate of the gas to be detected is selected to be 0.45 to 0.55 m.
Further, for the accuracy verification of the turbine flowmeter for gas flow detection to be detected, which is adapted to the difference in nominal diameter of the casing, the metering accuracy verification apparatus for the turbine flowmeter for gas flow detection provided in this embodiment adopts the following optimization mode:
the turbine flowmeter connecting pipe 240 for detecting the flow rate of the gas to be detected includes a straight pipe 242, a reducing collar 243, and a connecting pipe 244;
the nominal diameter of the straight pipe 242 is consistent with the nominal diameter of the gas outlet end of the gas flow standard meter 230, the nominal diameter of the junction pipe 244 is consistent with the nominal diameter of the gas inlet of the gas flow detection turbine flowmeter 100, the nominal diameter of one end of the reducing joint 243 is consistent with the nominal diameter of the straight pipe, and the nominal diameter of the other end of the reducing joint 243 is consistent with the nominal diameter of the junction pipe 244;
the straight pipe, the reducing binding section and the connecting pipe are connected to form a coaxial long pipe, wherein the gas outlet end of the gas flow standard meter 230 passes through a section of the straight pipe 242 and then passes through the reducing binding section 243 to be connected with one end of the connecting pipe 244, and the other end of the connecting pipe 244 is used for being connected with the gas inlet flange 241.
Through the optimization, for the turbine flow meters for detecting the flow of the gas to be detected with different nominal diameters of the shell, the accuracy verification of the turbine flow meters for detecting the flow of the gas to be detected with different nominal diameters of the shell can be met only by adjusting the reducing beam joint 243 and the connecting pipe 244;
for example, the metering accuracy verification device of the turbine flowmeter for gas flow rate detection provided by this embodiment may at least meet the accuracy verification of any one of the turbine flowmeters for gas flow rate detection, which have nominal diameters of DN40, DN50, or DN65 at two ends of the casing respectively.
Optionally, in the metering accuracy calibration apparatus of the turbine flowmeter for gas flow rate detection provided in this embodiment:
the straight pipe 242, the reducing coupling 243, and the connecting pipe 244 may be made of stainless steel, respectively, and the turbine flowmeter exhaust pipe 250 for detecting the flow rate of the gas to be detected may be made of stainless steel.
Further, as an optimization, the metering accuracy calibration apparatus of the gas flow rate detection turbine flowmeter according to the present embodiment includes:
the first pipeline 260 comprises a straight-through pipe 261 and a rubber hose 262, wherein the straight-through pipe 261 is a stainless steel pipe, and the stainless steel straight-through pipe 261 is connected with the ball valve 220 after being connected with a section of the rubber hose 262;
the second pipeline 270 is a stainless steel straight pipe with a length of 0.75-0.85 m.
The first pipeline is formed by combining a rigid straight-through pipe and a flexible rubber hose, so that the connection between the variable-frequency centrifugal fan and the ball valve is flexible, the vibration generated during the operation of the variable-frequency centrifugal fan and the impact of the sent gas on the ball valve and the whole calibrating device are better eliminated, the calibrating device is protected, a better calibrating environment is provided, and a better calibrating result is obtained.
As a general calibration apparatus, the metering accuracy calibration apparatus of the gas flow rate detection turbine flow meter according to the present embodiment includes:
the nominal diameters of the two ends of the ball valve 220 are respectively DN50, the nominal diameters of the air inlet end and the air outlet end of the gas flow standard meter 230 are respectively DN50, and the nominal diameters of the first pipeline 260 and the second pipeline 270 are respectively DN 50.
The above solution provided in this embodiment is only one of the possible embodiments, and those skilled in the art may make various changes according to actual needs, and of course, these changes and modifications all fall within the scope of the present invention as claimed.
As an optional implementation manner, in the metering accuracy calibration apparatus of the gas flow rate detection turbine flowmeter provided in this embodiment:
the gas flow standard meter 230 has a precision of 0.5 grade;
the gas flow meter 230 may be a wet flow meter.
Obviously, those skilled in the art can select various gas flow standard meters with different accuracy and types according to actual needs to meet the requirements of verification, and such applicability changes should fall within the scope of the claimed invention.
As a further optimization, the present embodiment provides a metering accuracy calibration apparatus for a gas flow rate detection turbine flow meter, comprising:
a table (not shown) and/or a support 280;
the workbench (not shown in the figure) and/or the bracket 280 are used for installing, fixing and supporting the variable frequency centrifugal fan 210, the ball valve 220, the gas flow standard meter 230, the turbine flow meter connecting pipe 240 for detecting the flow of the gas to be detected, the turbine flow meter exhaust pipe 250 for detecting the flow of the gas to be detected, the first pipeline 260, the second pipeline 270 and the turbine flow meter 100 for detecting the flow of the gas to be detected, so that a more stable and reliable verification environment and platform can be provided for verification of the metering accuracy of the turbine flow meter for detecting the flow of the gas.
In summary, it can be seen that:
firstly, on the premise of minimizing the cost, the utility model can form a detection platform and an applicability research device which take gas as a detection medium, can meet the detection requirement of the accuracy of the turbine flowmeter for gas flow detection, and can be used for analyzing and researching the performance, the accuracy and the applicability of the turbine flowmeter for gas flow detection and further improving the measurement accuracy of the turbine flowmeter for gas flow detection by the combination of a variable-frequency centrifugal fan, a ball valve, a gas flow standard meter, a turbine flowmeter connecting pipe for detected gas flow detection and an exhaust pipe;
secondly, the metering accuracy calibrating device of the turbine flowmeter for gas flow detection provided by the utility model is novel and unique, has a simple and compact structure, is convenient to manufacture, saves materials, is economical and practical, is convenient and flexible to use, can simulate various actual gas conveying conditions, is suitable for the calibrating requirements of the turbine flowmeter for gas flow detection with various specifications and sizes, and can provide accurate and credible calibrating data for the metering accuracy calibration of the turbine flowmeter for gas flow detection, so that the device has great popularization and application values.
During the description of the above description:
the description of the terms "present embodiment," "as shown at … …," "further improved technical solution," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model, and the schematic representation of the terms in this specification is not necessarily intended to refer to the same embodiment or example, and the particular feature, structure, material, or characteristic described, etc., may be combined or coupled in any suitable manner in any one or more embodiments or examples;
furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made on the technical solutions described in the foregoing embodiments, or some or all of the technical features of the embodiments can be equivalently replaced, and the corresponding technical solutions do not depart from the technical solutions of the embodiments of the present invention.
Claims (10)
1. A metering accuracy calibrating device of a turbine flowmeter for gas flow detection is used for analyzing and calibrating the metering accuracy of the turbine flowmeter for gas flow detection;
the gas flow detection turbine flowmeter comprises a turbine flow sensor, wherein the turbine flow sensor comprises a shell, and two ends of the shell are provided with connecting flanges;
the gas flow detects with turbine flowmeter's measurement precision calibrating installation, its characterized in that includes:
frequency conversion centrifugal fan, ball valve, gas flow standard meter, by the turbine flowmeter connecting pipe for gas flow detection and by the turbine flowmeter blast pipe for gas flow detection, wherein:
an air outlet of the variable-frequency centrifugal fan is connected with one end of the ball valve through a first pipeline;
the other end of the ball valve is connected with the gas inlet end of the gas flow standard meter through a second pipeline;
the gas outlet end of the gas flow standard meter is connected with one end of the detected gas flow detection turbine flowmeter connecting pipe, and the other end of the detected gas flow detection turbine flowmeter connecting pipe is provided with a gas inlet flange connected with a connecting flange on the gas inlet of the detected gas flow detection turbine flowmeter;
an air outlet flange used for being connected with a connecting flange on an air outlet of the gas flow detection turbine flowmeter to be detected is arranged on one side of the exhaust pipe of the gas flow detection turbine flowmeter, and the exhaust pipe of the gas flow detection turbine flowmeter is arranged at the downstream of the connecting pipe of the gas flow detection turbine flowmeter to be detected.
2. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 1, wherein:
the length of the turbine flowmeter connecting pipe for detecting the flow of the detected gas is 0.95-1.05 m, and the exhaust pipe of the turbine flowmeter for detecting the flow of the detected gas is a straight pipe with the length of 0.45-0.55 m.
3. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 1, wherein:
the turbine flowmeter connecting pipe for detecting the flow of the detected gas comprises a straight pipe, a reducing beam section and a splicing pipe;
the nominal diameter of the straight pipe is consistent with the nominal diameter of the gas outlet end of the gas flow standard meter, the nominal diameter of the splicing sleeve is consistent with the nominal diameter of the gas inlet of the gas flow detection turbine flowmeter, the nominal diameter of one end of the reducing binding section is consistent with the nominal diameter of the straight pipe, and the nominal diameter of the other end of the reducing binding section is consistent with the nominal diameter of the splicing sleeve;
the straight pipe, the reducing binding section and the splicing sleeve are connected to form a coaxial long pipe, wherein the gas outlet end of the gas flow standard meter is connected with one end of the splicing sleeve through the reducing binding section after passing through one section of the straight pipe, and the other end of the splicing sleeve is used for being connected with the gas inlet flange.
4. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 3, wherein:
the straight pipe, the reducing beam joint and the splicing sleeve are made of stainless steel respectively, and the exhaust pipe of the turbine flowmeter for detecting the flow of the gas to be detected is also made of stainless steel.
5. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 1, wherein:
the first pipeline comprises a straight-through pipe and a rubber hose, the straight-through pipe is a stainless steel pipe, and the stainless steel straight-through pipe is connected with the ball valve after being connected with a section of the rubber hose;
the second pipeline is a stainless steel straight pipe with the length of 0.75-0.85 m.
6. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 1, wherein:
the nominal diameters of the two ends of the ball valve are DN50 respectively, the nominal diameters of the air inlet end and the air outlet end of the gas flow standard meter are DN50 respectively, and the nominal diameters of the first pipeline and the second pipeline are DN50 respectively.
7. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 1, wherein: the precision of the gas flow standard meter is 0.5 grade.
8. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 1, wherein: the gas flow standard meter is a wet-type flow meter.
9. The metering accuracy verification apparatus for a gas flow rate measuring turbine flow meter according to claim 1, further comprising:
a table and/or a support;
the workstation and/or the support is used for the installation fixed with support frequency conversion centrifugal fan the ball valve gas flow standard meter the turbine flowmeter connecting pipe is used in the gas flow detection of being examined the turbine flowmeter blast pipe is used in the gas flow detection of being examined, and first pipeline the second pipeline with be examined the turbine flowmeter is used in the gas flow detection.
10. The measurement accuracy verification apparatus for a turbine flow meter for gas flow rate detection according to claim 1, wherein:
the detected gas flow rate detection turbine flowmeter is any one of those whose nominal diameters at both ends of the casing are DN40, DN50, or DN65, respectively.
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| CN115586180A (en) * | 2022-09-02 | 2023-01-10 | 中国电建集团西北勘测设计研究院有限公司 | Concentration detection device based on photovoltaic hydrogen production and storage |
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