CN220670617U - Thermal type gas mass flowmeter - Google Patents
Thermal type gas mass flowmeter Download PDFInfo
- Publication number
- CN220670617U CN220670617U CN202322150207.4U CN202322150207U CN220670617U CN 220670617 U CN220670617 U CN 220670617U CN 202322150207 U CN202322150207 U CN 202322150207U CN 220670617 U CN220670617 U CN 220670617U
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- Prior art keywords
- gas mass
- base
- thermal
- flow meter
- mass flow
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- 239000003292 glue Substances 0.000 claims abstract description 7
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 23
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 238000005457 optimization Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 238000012827 research and development Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses a thermal type gas mass flowmeter which comprises a barrel, a thermal type sensor, two thermocouples and a gauge outfit, wherein the barrel is of a structure with two open ends, a base is arranged on the side wall of the barrel, the thermal type sensor is arranged in the base, mounting holes are formed in the thermal type sensor, the two thermocouples are arranged in the mounting holes, the bottoms of the two thermocouples extend into the barrel, epoxy resin glue is poured in the mounting holes, and the gauge outfit is arranged at the top of the base and is electrically connected with the thermal type sensor. The utility model can prevent dust or water mist from entering the product to influence the stability of the product, ensure the long-term stable and reliable operation of the product and prolong the service life of the product.
Description
Technical Field
The utility model relates to the technical field of flow meters, in particular to a thermal type gas mass flow meter.
Background
The heat type gas mass flowmeter is designed based on the heat diffusion principle, namely, when fluid flows through a heating object, the heat dissipation of the heating object and the flow of the fluid are in a certain proportion relation, the sensor of the series flowmeter is provided with two RTDs of standard grade, one RTD is used as a heat source, the other RTD is used for measuring the temperature of the fluid, when the fluid flows, the temperature difference between the RTDs and the flow are in a linear relation with the flow, and the relation is converted into the linear output of a measuring flow signal through a microelectronic control technology, so that the heat type gas mass flowmeter is widely applied to industries such as public engineering, petroleum and natural gas industries, electric power industries, chemical industries, metallurgical industries, pulp and papermaking industries, food and medical industries, environmental protection and the like.
The existing thermal type gas mass flowmeter is complex in structure, inconvenient to assemble and disassemble, low in sealing effect of the sensor, and easy to cause ash layers or water mist to enter the product, so that the operation reliability and the service life of the product are affected.
Disclosure of Invention
Aiming at the problems of the prior thermal type gas mass flowmeter, the thermal type gas mass flowmeter with convenient disassembly and assembly, high sealing performance and long service life is provided.
The specific technical scheme is as follows:
a thermal gas mass flow meter, comprising:
the cylinder body is of a structure with two open ends, and a base is arranged on the side wall of the cylinder body;
the thermal sensor is arranged in the base, and a mounting hole is formed in the thermal sensor;
the two thermocouples are arranged in the mounting holes, the bottoms of the two thermocouples extend into the cylinder body, and epoxy resin glue is filled in the mounting holes;
the gauge outfit is installed at the top of base, and with thermal sensor electric connection.
As a further improvement and optimization of the scheme, the base is provided with a mounting groove communicated with the cylinder body, the thermal sensor is mounted in the mounting groove, and a sealing ring is arranged between the thermal sensor and the inner wall of the mounting groove.
As a further improvement and optimization of the scheme, the notch of the mounting groove is provided with an internal step, the top of the thermal sensor is provided with an external step, and the external step is in limit fit with the internal step.
As a further improvement and optimization of the solution, the external step is fixed on the internal step by a fastener.
As a further improvement and optimization of the scheme, screw thread installation is adopted between the gauge outfit and the base.
As a further improvement and optimization of the scheme, flanges are arranged at two opening ends of the cylinder body.
As a further improvement and optimization of the scheme, the two flanges are fixed with the cylinder body, and the base is fixed with the cylinder body through argon arc welding.
As a further improvement and optimization of the present solution, the header includes:
the shell is arranged on the base in a threaded manner, a sensor circuit, a main control circuit and a display circuit which are electrically connected in sequence are arranged in the shell, and the sensor circuit is electrically connected with the thermal sensor;
the display screen is arranged on the outer side of the shell and is electrically connected to the display circuit.
As a further improvement and optimization of this scheme, the casing includes back lid, shell and the protecgulum of threaded connection in proper order, back lid the shell with form the installation cavity between the protecgulum, sensor circuit the master control circuit the display circuit installs in the installation cavity, the protecgulum is equipped with the display port, the display screen is arranged in the display port, the outside of display port is equipped with display panel.
As a further improvement and optimization of the scheme, the bottom of the shell is provided with a transition pipe, and the transition pipe is fixed with the base through a loose joint nut.
Compared with the prior art, the technical scheme has the following positive effects:
(1) The thermal sensor adopts a glue filling process, has high dustproof and waterproof capability, can reach the protection grade of IP66, can prevent dust or water mist from entering the product to influence the stability of the product, ensures the long-term stable and reliable operation of the product, and prolongs the service life of the product.
(2) When the fluid in the cylinder is measured, the flow direction of the fluid is unlimited, the bidirectional measurement of the flow of the fluid medium is realized, and the practicability is high.
(3) The utility model has the advantages of simplified structural design, convenient assembly, improved efficiency and cost saving, and can well replace the traditional complex structural products.
Drawings
FIG. 1 is an elevation view of a thermal gas mass flow meter of the present utility model;
FIG. 2 is a side view of a thermal gas mass flow meter according to the present utility model;
in the accompanying drawings: 1. a cylinder; 2. a flange; 3. a base; 4. a thermal sensor; 5. a thermocouple; 6. epoxy resin glue; 7. a seal ring; 8. a gauge head; 31. a mounting groove; 32. a step is arranged in the inner part; 41. a mounting hole; 9. a flat cable; 42. an external step; 81. a plug; 82. line ball gram; 83. a housing; 84. a rear cover; 85. a front cover; 86. a sensor circuit; 87. a main control circuit; 88. a display circuit; 89. a display screen; 831. a threaded hole; 832. a transition pipe; 833. a loose joint nut; 851. a display port; 852. a display panel.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present utility model, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 is a front view of a thermal gas mass flowmeter according to the present utility model, fig. 2 is a side view of the thermal gas mass flowmeter according to the present utility model, and as shown in fig. 1-2, a thermal gas mass flowmeter according to a preferred embodiment is shown, which comprises a cylinder 1, a thermal sensor 4, two thermocouples 5 and a gauge outfit 8, wherein the cylinder 1 has an open structure at two ends, a base 3 is provided on the side wall of the cylinder 1, the thermal sensor 4 is provided in the base 3, a mounting hole 41 is provided on the thermal sensor 4, the two thermocouples 5 are all provided in the mounting hole 41, the bottoms of the two thermocouples 5 extend into the cylinder 1, the epoxy resin glue 6 is filled in the mounting hole 41, and the gauge outfit 8 is mounted on the top of the base 3 and is electrically connected with the thermal sensor 4.
The thermal sensor 4 in the embodiment adopts a glue filling process, has high dustproof and waterproof capability, can reach the protection level of IP66, can prevent dust or water mist from entering the product to influence the stability of the product, ensures the long-term stable and reliable operation of the product, and prolongs the service life of the product.
In the embodiment, when the fluid in the cylinder body 1 is measured, the flow direction of the fluid is unlimited, the bidirectional measurement of the flow of the fluid medium is realized, and the practicability is high.
Further, as a preferred embodiment, in order to improve the sealing property between the base 3 and the thermal sensor 4, the base 3 is provided with a mounting groove 31 communicating with the cylinder 1, the thermal sensor 4 is mounted in the mounting groove 31, and a sealing ring 7 is provided between the thermal sensor 4 and the inner wall of the mounting groove 31.
Further, as a preferred embodiment, in order to improve the installation stability of the thermal sensor 4, the notch of the installation groove 31 is provided with an internal step 32, the top of the thermal sensor 4 is provided with an external step 42, and the external step 42 is in limit fit with the internal step 32.
Further, as a preferred embodiment, the external step 42 is secured to the internal step 32 by fasteners.
Further, as a preferred embodiment, in order to facilitate the assembly and disassembly work between the gauge outfit 8 and the base 3, a screw thread is used between the gauge outfit 8 and the base 3.
Further, as a preferred embodiment, both open ends of the cylinder 1 are provided with flanges 2.
Further, as a preferred embodiment, the two flanges 2 and the cylinder 1, and the base 3 and the cylinder 1 are all fixed by argon arc welding.
Further, as a preferred embodiment, the gauge outfit 8 includes a housing and a display screen 89, the housing is mounted on the base 3 by screw threads, a sensor circuit 86, a main control circuit 87 and a display circuit 88 which are electrically connected in sequence are mounted in the housing, the sensor circuit 86 is electrically connected with the thermal sensor 4, and the display screen 89 is disposed on the outer side of the housing and is electrically connected with the display circuit 88.
Preferably, the display screen 89 is an OLED display screen 89.
In this embodiment, the display circuit 88 adopts the OLED display screen 89, which has high color saturation, gorgeous color, no need of backlight, excellent viewing angle and response speed, and stronger adaptability.
More preferably, the sensor circuit 86 is connected with the thermal sensor 4, the sensor circuit 86 is connected with the main control circuit 87, and the active circuit is connected with the display circuit 88 through the flat cable 9.
Further, as a preferred embodiment, in order to facilitate the disassembly and assembly of the body of the gauge outfit 8, the casing comprises a rear cover 84, a housing 83 and a front cover 85 which are sequentially connected by threads, an installation cavity is formed among the rear cover 84, the housing 83 and the front cover 85, a sensor circuit 86, a main control circuit 87 and a display circuit 88 are installed in the installation cavity, the front cover 85 is provided with a display opening 851, a display screen 89 is arranged in the display opening 851, and a display panel 852 is arranged outside the display opening 851.
Preferably, the sensor circuit 86, the main control circuit 87, and the display circuit 88 are all removably secured within the housing 83 by fasteners.
Further, hexagonal copper columns are arranged between the shell 83 and the sensing circuit, the main control circuit 87 and the display circuit 88, the hexagonal copper columns are fixed with the shell 83 through threads, and the hexagonal copper columns are fixed with the sensor circuit 86/the main control circuit 87/the display circuit 88 through screws.
More preferably, threaded holes 831 are formed in two sides of the housing 83, a plug 81 is mounted in one threaded hole 831, a line-through flange 82 is mounted in the other threaded hole 831, a four-core shielding line is electrically connected to the main control circuit 87, and an input end of the four-core shielding line penetrates through the line-through flange 82 and extends to the outside of the housing 83.
Further, as a preferred embodiment, in order to further facilitate the assembly and disassembly of the housing and the base 3, the bottom of the housing 83 is provided with a transition pipe 832, and the transition pipe 832 is fixed to the base 3 by a loose joint nut 833.
The embodiment has the advantages of simplified structural design, convenient assembly, high efficiency and cost saving, and can well replace traditional complex structural products.
Preferably, the shell, the base 3 and the cylinder 1 are all made of 316L stainless steel, so that the corrosion resistance is realized, and the requirements of the industry with high sanitary standards can be met.
The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.
Claims (10)
1. A thermal gas mass flow meter, comprising:
the cylinder body is of a structure with two open ends, and a base is arranged on the side wall of the cylinder body;
the thermal sensor is arranged in the base, and a mounting hole is formed in the thermal sensor;
the two thermocouples are arranged in the mounting holes, the bottoms of the two thermocouples extend into the cylinder body, and epoxy resin glue is filled in the mounting holes;
the gauge outfit is installed at the top of base, and with thermal sensor electric connection.
2. The thermal gas mass flowmeter of claim 1, wherein the base is provided with a mounting groove communicated with the cylinder, the thermal sensor is mounted in the mounting groove, and a sealing ring is arranged between the thermal sensor and the inner wall of the mounting groove.
3. The thermal gas mass flow meter of claim 2, wherein the notch of the mounting groove is provided with an internal step, the top of the thermal sensor is provided with an external step, and the external step is in limit fit with the internal step.
4. A thermal gas mass flow meter as claimed in claim 3, wherein said external step is secured to said internal step by a fastener.
5. The thermal gas mass flow meter of claim 1, wherein a threaded mounting is employed between the gauge outfit and the base.
6. The thermal gas mass flow meter of claim 1, wherein both open ends of the cylinder are provided with flanges.
7. The thermal gas mass flow meter of claim 6, wherein the flanges are fixed to the cylinder, and the base is fixed to the cylinder by argon arc welding.
8. The thermal gas mass flow meter of claim 1, wherein the header comprises:
the shell is arranged on the base in a threaded manner, a sensor circuit, a main control circuit and a display circuit which are electrically connected in sequence are arranged in the shell, and the sensor circuit is electrically connected with the thermal sensor;
the display screen is arranged on the outer side of the shell and is electrically connected to the display circuit.
9. The thermal gas mass flow meter of claim 8, wherein the housing comprises a rear cover, a housing and a front cover that are sequentially screwed together, a mounting cavity is formed between the rear cover, the housing and the front cover, the sensor circuit, the main control circuit and the display circuit are mounted in the mounting cavity, the front cover is provided with a display port, the display screen is disposed in the display port, and a display panel is disposed outside the display port.
10. The thermal gas mass flow meter of claim 9, wherein the bottom of the housing has a transition tube secured to the base by a union nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322150207.4U CN220670617U (en) | 2023-08-10 | 2023-08-10 | Thermal type gas mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322150207.4U CN220670617U (en) | 2023-08-10 | 2023-08-10 | Thermal type gas mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220670617U true CN220670617U (en) | 2024-03-26 |
Family
ID=90327340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322150207.4U Active CN220670617U (en) | 2023-08-10 | 2023-08-10 | Thermal type gas mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220670617U (en) |
-
2023
- 2023-08-10 CN CN202322150207.4U patent/CN220670617U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |