CN217818873U - Precooling-free mass flow meter - Google Patents
Precooling-free mass flow meter Download PDFInfo
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- CN217818873U CN217818873U CN202221855823.9U CN202221855823U CN217818873U CN 217818873 U CN217818873 U CN 217818873U CN 202221855823 U CN202221855823 U CN 202221855823U CN 217818873 U CN217818873 U CN 217818873U
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Abstract
The utility model provides a precooling-free mass flow meter, which belongs to the technical field of automatic metering and comprises a flow meter body, a measuring guide pipe, a threaded pipe, a flange plate, a communicating pipe and a control unit, wherein the measuring guide pipe and the communicating pipe both adopt a composite heat-insulating layer structure, the temperature in the pipe is reduced along with the introduction of low-temperature gas and is kept in a threshold range, so that the gas flowing in at the moment is always kept in a low-temperature state without precooling, and the metering efficiency is improved; the temperature sensor can detect the temperature of the measuring flow guide pipe in real time, and transmits data to the central processing unit through the communication controller, when the detected temperature reaches a threshold limit value, the central processing unit sends a metering starting instruction to the flowmeter body through the communication controller, so that the flowmeter body can always perform metering at the specified temperature, and the accuracy of a metering result of the precooling-free mass flowmeter is improved.
Description
Technical Field
The utility model belongs to the technical field of the automatic measurement, particularly, relate to a precooling mass flow meter exempts from.
Background
The mass flowmeter is a precise measuring instrument, is widely used in many industrial fields in China, and is used for measuring the mass flow of various raw materials.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an exempt from precooling mass flow meter aims at solving the required precooling time of current mass flow meter long, and the measurement inefficiency and the unsafe problem of measurement result.
The utility model discloses a realize like this:
the utility model provides a precooling-free mass flow meter, which comprises a flow meter body and a measuring flow guide pipe, wherein the measuring flow guide pipe is U-shaped, the flow meter body is connected with the bottom of the measuring flow guide pipe through a communicating pipe, the two ends of the measuring flow guide pipe horizontally extend outwards, threaded pipes are sleeved at the two ends of the measuring flow guide pipe, and the end parts of the threaded pipes are provided with flange plates; the measurement guide pipe and the communicating pipe are both made of heat preservation pipes of a composite heat preservation layer structure, and each heat preservation pipe of the composite heat preservation layer structure comprises a guide pipe base body, at least one inner protection layer and at least one heat preservation layer; the flow guide pipe is characterized in that a temperature sensor is further arranged in the measurement flow guide pipe, a control unit is further arranged on the outer wall of the measurement flow guide pipe, a central processing unit and a communication controller are arranged in the control unit, the central processing unit is used for calculating data, the communication controller is used for data transmission, the central processing unit is electrically connected with the communication controller, and the communication controller is electrically connected with the flow meter body and the temperature sensor.
The utility model provides a pair of exempt from precooling mass flow meter's technological effect as follows: the gas flowing into the measuring flow guide pipe is always kept in a low-temperature state by arranging the composite heat-insulating layer structure, precooling operation is not needed, and the detection efficiency of the flow meter is improved; through setting up temperature sensor, the control unit, central processing unit, communication controller, can detect the temperature of measuring the gas in the nozzle in real time, only when the temperature reaches standard, the control unit just can be through communication controller to flowmeter body signal transmission, control flowmeter body and begin work.
On the basis of the technical scheme, the utility model discloses an exempt from precooling mass flow meter can also do following improvement:
furthermore, an inner protective layer and a heat-insulating layer are sequentially pasted on the outer wall of the flow guide pipe base body, and the inner protective layer and the heat-insulating layer are alternately arranged.
The beneficial effect of adopting the further scheme is as follows: through setting up the alternative arrangement of inner protective layer and heat preservation, strengthened the heat preservation effect of measuring the honeycomb duct.
Further, the inner protection layer is one of ceramic fiber, pickax-containing fiber, crystal fiber, aerogel, aluminum silicate, rock wool, calcium silicate, multi-coagulation foam glass, heat barrier emission glass, foam glass and an emission material inner protection layer.
Further, the heat-insulating layer is one of ceramic fiber, heat-insulating layer containing pickax fiber, crystal fiber, aerogel, aluminum silicate, rock wool, calcium silicate, multi-coagulation foam glass, heat-barrier emission glass, foam glass and emission material.
Further, the heat preservation pipe of the composite heat preservation layer structure further comprises an outer protection layer made of metal materials, and the outer protection layer is coated on the outer side of the inner protection layer or the heat preservation layer which is farthest away from the pipeline or the equipment base body.
The beneficial effect of adopting the further scheme is as follows: the metal heat-insulating layer has the characteristics of good heat preservation, heat insulation, cold resistance, shock resistance, crack resistance and the like, and effectively improves the heat preservation and the firmness of the measuring guide pipe.
Further, the thickness of the inner protection layer is controlled to be between 2 mm and 20 mm.
Furthermore, the thickness of the heat-insulating layer is controlled to be between 10 and 50 mm.
Further, still include the display, the display is connected with the communication controller is electric.
The beneficial effect of adopting the further scheme is as follows: through setting up the display and being connected with the communication controller electricity, can show the result that central processing unit calculated on the display through the communication controller, be convenient for monitoring personnel to carry out real-time observation.
Further, still include the host computer, the host computer with the communication controller electricity is connected.
The beneficial effect of adopting the further scheme is as follows: the upper computer can turn on or off the flowmeter through the communication controller.
Further, the threaded pipe and the flange plate are made of stainless steel materials, and the threaded pipe and the flange plate are integrally formed.
Compared with the prior art, the utility model provides a pair of exempt from precooling mass flow meter's beneficial effect is: by arranging the measurement guide pipe and the communicating pipe to adopt a composite heat-insulating layer structure, the temperature in the pipe is reduced along with the introduction of low-temperature gas and is always kept in a threshold range, so that the gas flowing into the mass flow meter is always kept in a low-temperature state without precooling, and the metering efficiency is effectively improved; through set up temperature sensor in measuring the honeycomb duct, temperature sensor can the temperature in real time monitoring measurement honeycomb duct to convey data to central processing unit in real time through the communication controller, when the temperature reached threshold limit value, central processing unit sent the instruction that begins the measurement to the flowmeter body through the communication controller, ensured that mass flowmeter can begin the measurement under the specified temperature, improved the accuracy of exempting from precooling from mass flowmeter metering result.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is an overall schematic diagram of a precooling-free mass flow meter;
FIG. 2 is a schematic diagram of a composite insulation layer structure of a precooling-free mass flow meter;
FIG. 3 is an electrical connection diagram of a precooling-free mass flow meter;
in the drawings, the components represented by the respective reference numerals are listed below:
10. a flowmeter body; 20. measuring a flow guide pipe; 201. a draft tube base body; 202. an inner protective layer; 203. a heat-insulating layer; 204. an outer protective layer; 21. a temperature sensor; 30. a threaded pipe; 40. a flange plate; 50. a communicating pipe; 60. a control unit; 61. a central processing unit; 62. a communication controller; 63. a display; 64. and an upper computer.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Examples
As shown in fig. 1-3, the utility model provides an exempt from precooling mass flowmeter, including flowmeter body 10 and measurement honeycomb duct 20, measurement honeycomb duct 20 is the U-shaped, flowmeter body 10 connects in the bottom of measurement honeycomb duct 20 through communicating pipe 50, the both ends level of measurement honeycomb duct 20 extends outward, and the both ends of measurement honeycomb duct 20 are all overlapped and are equipped with screwed pipe 30, the tip of two screwed pipes 30 is provided with flange plate 40; the measurement draft tube 20 and the communicating tube 50 are both made of heat preservation tubes with a composite heat preservation layer structure, and each heat preservation tube with the composite heat preservation layer structure comprises a draft tube base body 201, at least more than one inner protection layer 202 and at least more than one heat preservation layer 203; the measuring guide pipe 20 is also internally provided with a temperature sensor 21, the outer wall of the measuring guide pipe 20 is also provided with a control unit 60, the control unit 60 is internally provided with a central processing unit 61 and a communication controller 62, the central processing unit 61 is used for calculating data, the communication controller 62 is used for transmitting data, the central processing unit 61 is electrically connected with the communication controller 62, and the communication controller 62 is electrically connected with the flowmeter body 10 and the temperature sensor 21.
When the gas flowmeter is used, firstly, a pipeline for inputting gas and a pipeline for discharging gas are respectively connected with two ends of a measuring guide pipe 20, the two ends are fixed by a flange plate 40, low-temperature gas is introduced into the measuring guide pipe 20, so that the temperature in the measuring guide pipe 20 is reduced, meanwhile, the temperature in the pipe is detected by a temperature sensor 21, when the temperature in the pipe is reduced to be within a threshold range, the temperature sensor 21 sends detected data to a central processor 61 through a communication controller 62, the central processor 61 sends a signal to the flowmeter body 10 through the communication controller 62, the flowmeter body 10 starts to work, the flowmeter body 10 sends the detected data to the central processor 61 through the communication controller 62, the central processor 61 processes and calculates the data, and after the calculation is completed, a calculation result is displayed on a display 63 through the communication controller 62, so that monitoring personnel can read the data conveniently.
Wherein the threshold range is + -10% of the inflow gas temperature.
Preferably, the temperature sensor 21 can be a WR thermocouple temperature sensor produced by Beijing Linuotian sanden science and technology Limited, the measurable medium of the temperature sensor is gas, liquid and steam, the temperature measuring range is-50 ℃ to +150 ℃, the power supply voltage is 12-36V of direct current voltage, and 4-20 mA current signals or 1-10V voltage signals can be output.
Optionally, in the above technical solution, an inner protection layer 202 and an insulation layer 203 are sequentially attached to the outer wall of the draft tube base body 201, and the inner protection layer 202 and the insulation layer 203 are alternately arranged.
The inner protection layers 202 and the heat insulation layers 203 are arranged alternately, so that the heat insulation effect of the composite heat insulation layer structure is better.
Optionally, in the above technical solution, the inner protection layer 202 is one of ceramic fiber, pickaxe-containing fiber, crystal fiber, aerogel, aluminum silicate, rock wool, calcium silicate, multiple-gel foam glass, thermal barrier emission glass, foam glass, and an inner protection layer of emission material.
Optionally, in the above technical solution, the insulating layer 203 is one of ceramic fiber, insulating layers containing pickaxe fiber, crystal fiber, aerogel, aluminum silicate, rock wool, calcium silicate, multiple-coagulation foam glass, heat barrier emission glass, foam glass, and emission material.
The materials used for the inner protection layer 202 and the insulating layer 203 have good heat insulating property.
Optionally, in the above technical solution, the insulating pipe of the composite insulating layer structure further includes an outer protective layer 204 made of a metal material, and the outer protective layer 204 is wrapped on the outer side of the inner protective layer 202 or the insulating layer 203 farthest from the pipeline or the equipment substrate.
The metal heat-insulating layer has the characteristics of good heat preservation, heat insulation, cold resistance, shock resistance, crack resistance and the like, and effectively improves the heat preservation and the firmness of the measurement guide pipe 20.
Optionally, in the above technical solution, the thickness of the inner protection layer 202 is controlled to be between 2 mm and 20 mm.
Optionally, in the above technical solution, the thickness of the insulating layer 203 is controlled to be between 10 mm and 50 mm.
Optionally, in the above technical solution, the mobile terminal further includes a display 63, and the display 63 is electrically connected to the communication controller 62.
The central processor 61 can display the calculated result on the display 63 through the communication controller 62, so that the result can be conveniently read by a worker. Optionally, in the above technical solution, the system further includes an upper computer 64, and the upper computer 64 is electrically connected to the communication controller 62.
Wherein, the upper computer 64 is electrically connected with the communication controller 62, so that the upper computer 64 can input the threshold limit value and the metering time for measuring the temperature required to be reached by the gas in the draft tube 20 to the control unit 60 through the communication controller 62; the upper computer is a computer.
Optionally, in the above technical solution, both the threaded pipe 30 and the flange 40 are made of stainless steel material, and the threaded pipe 30 and the flange 40 are integrally formed.
Specifically, the operating principle of the precooling-free mass flow device is as follows: the measurement guide pipe 20 and the communicating pipe 50 are made of the heat preservation pipe with the composite heat preservation layer structure, so that the measurement guide pipe 20 and the communicating pipe 50 have good heat preservation performance, when low-temperature gas is introduced into the measurement guide pipe 20, the temperature in the measurement guide pipe 20 is reduced, when the temperature in the measurement guide pipe 20 reaches the range of threshold limit value, the introduced gas is kept at low temperature all the time, precooling is not needed, and the metering efficiency is improved; meanwhile, by arranging the temperature sensor 21, the control unit 60, the central processing unit 61 and the communication controller 62, the temperature sensor 21 can detect the temperature in the measurement guide pipe 20 in real time, when the temperature in the measurement guide pipe 20 reaches a threshold limit value, the control unit 60 can send a signal to the flowmeter body 10 through the communication controller 62 to control the flowmeter body 10 to start working, so that the mass flowmeter can start metering at a specified temperature, and the accuracy of a metering result of the precooling-free mass flowmeter is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The precooling-free mass flow meter comprises a flow meter body (10) and a measuring guide pipe (20), wherein the measuring guide pipe (20) is U-shaped, the flow meter body (10) is connected to the bottom of the measuring guide pipe (20) through a communicating pipe (50), two ends of the measuring guide pipe (20) horizontally extend outwards, threaded pipes (30) are sleeved at two ends of the measuring guide pipe (20), and flange plates (40) are arranged at the end parts of the two threaded pipes (30); the device is characterized in that the measurement guide pipe (20) and the communicating pipe (50) are both made of heat preservation pipes with composite heat preservation layer structures, and each heat preservation pipe with the composite heat preservation layer structure comprises a guide pipe base body (201), at least more than one inner protection layer (202) and at least more than one heat preservation layer (203); still be provided with temperature sensor (21) in measuring honeycomb duct (20), still be provided with control unit (60) on the outer wall of measuring honeycomb duct (20), be provided with central processing unit (61) and communication controller (62) in control unit (60), central processing unit (61) are used for the calculation of data, communication controller (62) are used for data transmission, central processing unit (61) with communication controller (62) electricity is connected, communication controller (62) with flowmeter body (10) and temperature sensor (21) electricity is connected.
2. The precooling-free mass flow meter as claimed in claim 1, wherein an inner protective layer (202) and an insulating layer (203) are sequentially applied to the outer wall of the flow guide pipe base body (201), and the inner protective layer (202) and the insulating layer (203) are alternately arranged.
3. The precooling-free mass flow meter of claim 2, wherein the inner protective layer (202) is one of a ceramic fiber, a pickaxe-containing fiber, a crystalline fiber, an aerogel, an aluminum silicate, a rock wool, a calcium silicate, a multiple-gel foam glass, a thermal barrier emission glass, a foam glass, an emission material inner protective layer.
4. The precooling-free mass flowmeter as claimed in claim 3, wherein the insulating layer (203) is one of an insulating layer of ceramic fiber, cellulose fiber, crystal fiber, aerogel, aluminum silicate, rock wool, calcium silicate, multi-setting foam glass, heat barrier emission glass, foam glass and emission material.
5. The precooling-free mass flowmeter of claim 4, wherein the insulating tube of the composite insulating layer structure further comprises an outer protective layer (204) made of a metal material, and the outer protective layer (204) is coated on the outer side of the inner protective layer (202) or the insulating layer (203) farthest from the pipeline or the equipment base body.
6. A precooling-free mass flowmeter as claimed in claim 2, wherein the thickness of the inner protective layer (202) is controlled between 2 and 20 mm.
7. The precooling-free mass flowmeter as claimed in claim 6, wherein the thickness of the heat-insulating layer (203) is controlled to be between 10 and 50 mm.
8. The pre-cooling-free mass flow meter according to claim 1, further comprising a display (63), wherein the display (63) is electrically connected to the communication controller (62).
9. The precooling-free mass flowmeter of claim 1, further comprising an upper computer (64), wherein the upper computer (64) is electrically connected with the communication controller (62).
10. The precooling-free mass flowmeter as claimed in claim 1, wherein the threaded pipe (30) and the flange (40) are both made of stainless steel, and the threaded pipe (30) and the flange (40) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221855823.9U CN217818873U (en) | 2022-07-07 | 2022-07-07 | Precooling-free mass flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221855823.9U CN217818873U (en) | 2022-07-07 | 2022-07-07 | Precooling-free mass flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217818873U true CN217818873U (en) | 2022-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221855823.9U Active CN217818873U (en) | 2022-07-07 | 2022-07-07 | Precooling-free mass flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217818873U (en) |
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2022
- 2022-07-07 CN CN202221855823.9U patent/CN217818873U/en active Active
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