CN112325955A - Multipurpose heat conduction type flow switch and its preparation method - Google Patents
Multipurpose heat conduction type flow switch and its preparation method Download PDFInfo
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- CN112325955A CN112325955A CN202011258685.1A CN202011258685A CN112325955A CN 112325955 A CN112325955 A CN 112325955A CN 202011258685 A CN202011258685 A CN 202011258685A CN 112325955 A CN112325955 A CN 112325955A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000523 sample Substances 0.000 claims abstract description 62
- 238000003466 welding Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000011265 semifinished product Substances 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000009998 heat setting Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000875 corresponding effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- 238000005520 cutting process Methods 0.000 description 1
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- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
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Abstract
The invention discloses a multipurpose heat conduction type flow switch and a preparation method thereof, wherein the multipurpose heat conduction type flow switch comprises a display part, a detection part and a power supply part, the detection part is arranged at the lower part of the display part, the power supply part is arranged at one side of the display part, the power supply part supplies power to the display part, the detection part comprises a probe tube, an adapter is arranged outside the probe tube, a probe circuit board and a sensor heat buffer are arranged in the probe tube, one end of the probe circuit board is connected with the sensor heat buffer, and the other end of the probe circuit board is connected with the display part. The invention can effectively solve the application problem that the accumulated flow is not required at present and the corresponding action point is set through the change of the flow speed. The method has the advantages of considering measurement of non-conductive liquid, solving the problems that the large-caliber flow velocity measurement cost is high, the liquid with large viscosity cannot be measured, and the welding flange is required to be cut and processed on an installation pipeline during installation. Provides a product which has low cost and can measure water, oil and gas.
Description
Technical Field
The invention relates to the field of flow control devices, in particular to a multipurpose heat conduction type flow switch and a preparation method thereof.
Background
With the development of national information construction, flow measurement and control are widely applied to the fields of industrial departments such as chemical industry, metallurgy, water supply and drainage, steel, coal, paper making, food, light textile, environmental protection and the like, municipal administration, water conservancy construction and the like. The gas flowmeter has a large market demand, and has a good application effect on gas and liquid flowmeters with various measurement principles, such as industrial mainstream electromagnetic flowmeters, Coriolis mass flowmeters, turbine flowmeters, vortex shedding flowmeter ultrasonic flowmeters, orifice plate flowmeters, differential pressure flowmeters and the like.
The electromagnetic flowmeter cannot measure non-conductive liquid due to the limitation of the self-measuring principle; the coriolis force mass flowmeter cannot meet the requirement of large-caliber production; the turbine flowmeter is obvious in precision loss after long-term use, the vortex street flowmeter cannot measure liquid with high viscosity and the like, and the large products basically need to be processed by cutting and welding flanges for installing pipelines in addition to installation requirements.
Disclosure of Invention
The invention aims to provide a multipurpose thermal conductivity type flow switch and a preparation method thereof, which can effectively solve the problems that the conventional flowmeter cannot measure non-conductive liquid, cannot meet the requirement of large-caliber production, has obvious loss of turbine precision after long-term use, cannot measure liquid with high viscosity and needs to cut and weld flanges on an installation pipeline during installation.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the multipurpose thermal conductivity type flow switch comprises a display part, a detection part and a power supply part, wherein the detection part is arranged on the lower portion of the display part, the power supply part is arranged on one side of the display part, the power supply part supplies power to the display part, the detection part comprises a probe tube, a probe circuit board and a sensor thermal buffer are arranged in the probe tube, one end of the probe circuit board is connected with the sensor thermal buffer, and the other end of the probe circuit board is connected with a signal circuit board of the display part.
The invention further improves the following steps: the bottom of the lower cover is provided with a base locking ring sleeved on the periphery of the probe tube; the outside adapter that sets up of probe pipe, adapter and base locking ring threaded connection.
The invention further improves the following steps: a first O-shaped ring is arranged between the adapter and the probe tube.
The invention further improves the following steps: a rectangular sealing ring is arranged on the adapter.
The invention further improves the following steps: the display part comprises a first upper cover, a second upper cover and a lower cover, the second upper cover is installed inside the first upper cover in a matched mode, the lower cover is arranged at the bottom of the first upper cover, a power circuit board, a signal circuit board and a display circuit board are arranged inside the second upper cover, a key and a display screen are arranged at the top of the first upper cover, the key and a display screen sealing gasket are installed in an extruding mode, the display screen and the display window sealing gasket are connected with an upper cover through spot welding, the display circuit board is connected with the signal circuit board and the power circuit board, and the signal circuit board is connected with the probe circuit board.
The invention further improves the following steps: a power supply circuit board is also arranged in the second upper cover; the power supply circuit board is connected with the power supply part and respectively supplies power to the display circuit board, the signal circuit board and the signal probe circuit board.
The invention further improves the following steps: and a second O-shaped ring is arranged between the first upper cover and the lower cover.
The invention further improves the following steps: the display screen is fixedly arranged on the top of the first upper cover through a display screen fixing plate; and a display screen sealing gasket is arranged on the display screen fixing plate.
The invention further improves the following steps: the power supply part comprises a socket shell, a five-core inserting core is arranged in the socket shell, one end of the five-core inserting core supplies power to the power circuit board and the detection part through an electric wire, and the other end of the five-core inserting core is connected with a power supply through an MS901 cable.
The preparation method of the multipurpose thermal conductance type flow switch comprises the following steps:
1) performing argon arc welding on the probe tube and the lower cover, and installing a base locking ring sleeved on the periphery of the probe tube at the bottom of the lower cover; after the probe circuit board is subjected to heat setting, the probe circuit board is combined with a sensor heat buffer, then a probe tube is arranged, a sensor assembly is formed, and the direction is marked;
2) the power circuit board, the signal circuit board and the display circuit board are assembled and then soldered and connected with a sensor assembly circuit flat cable to obtain a flow switch semi-finished product;
3) assembling the shell: performing argon arc welding on the first upper cover and the second upper cover; assembling the display screen and the display screen fixing plate, and then performing spot welding packaging on the assembled display screen and the first upper cover; the second upper cover and the socket shell are subjected to laser welding; welding a five-core plug, and installing the five-core plug into a socket shell;
4) mounting the flow switch semi-finished product assembled in the step 2) on a calibration table according to the marking direction in the step 1), calibrating, and assembling a second upper cover on a lower cover of the flow switch semi-finished product in an interference fit manner after the calibration is qualified to obtain the assembled flow switch;
5) and after the assembled flow switch is in threaded connection with the adapter, the multipurpose heat conduction type flow switch is obtained.
Compared with the prior art, the invention has the following beneficial effects:
the invention utilizes the probe circuit board and the sensor thermal buffer in the probe tube to detect different media, and solves the problem that the existing flowmeter can not measure non-conductive liquid and liquid with larger viscosity.
Further, for the adapter of the different diameter models of installation, pass through base locking ring and probe union coupling with the adapter, made things convenient for the installation and the dismantlement of adapter, can adapt to different installation environment, in order to improve sealed effect.
Furthermore, a first O-shaped ring is arranged between the adapter and the probe tube, and a rectangular sealing ring is arranged on the adapter.
Further, in the display part, power supply circuit board is respectively to display circuit board, signal circuit board and letter probe circuit board power supply, signal circuit board transmits the signal of probe circuit board transmission and sends to display circuit board, display circuit board rethread display screen shows flow information for the operator, in order to improve display part's leakproofness, install second O shape circle between first upper cover and the lower cover, in order to provide the mounted position for the display screen, and convenient the maintenance, the display screen passes through display screen fixed plate fixed mounting at first upper cover top, in order to prevent liquid infiltration, be provided with the sealed pad of display screen on the display screen fixed plate, provide digital display and two kinds of display modes of progress bar display.
Furthermore, a power supply part introduces a power supply through a five-core inserting core and an MS901 cable to provide power for the whole machine, the circuit boards related by the invention are all digital circuits, signals and peripheral processing are carried out by chips such as MSP430, the flow rate signals are stable, the measuring effect is good, and the probe circuit board adopts a thin film circuit and is sensitive to sensing. The whole machine has good repeatability, high sensitivity and temperature compensation, and provides temperature measurement. The multi-center output mode, relay output, PNP, 4-20mA, 485 communication can be customized, and meanwhile, the flow rate measurement of other media such as air, oil and water is met.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of a multipurpose heat-conducting flow switch according to the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a top view of the multipurpose heat conductive flow switch of fig. 1 in a display state.
The device comprises a power circuit board 1, a signal circuit board 2, a display circuit board 3, a probe circuit board 4, a probe tube 5, a socket shell 6, a first upper cover 7, a second upper cover 8, a lower cover 9, a display screen fixing plate 10, a first O-shaped ring 11, a second O-shaped ring 12, a rectangular sealing ring 13, a base locking ring 14, a key 15, a 16-adapter, a 17-display screen 18, a display screen sealing gasket 19, a nameplate 20, a five-core inserting core, a 21-MS901 cable and a sensor thermal buffer 22.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Example 1
Referring to fig. 1 to 3, the present invention provides a multipurpose thermal conductive flow switch, including a display portion, a detection portion and a power supply portion, the detection portion is disposed at the lower portion of the display portion, the power supply portion is disposed at one side of the display portion, the power supply portion supplies power to the display portion, the detection portion includes a probe tube 5, an adapter 16 is disposed at the outer portion of the probe tube 5, a probe circuit board 4 and a sensor thermal buffer 22 are disposed in the probe tube 5, one end of the probe circuit board 4 is connected to the sensor thermal buffer 22, the other end of the probe circuit board 4 is connected to the display portion, the adapter 16 is connected to the probe tube 5 through a base locking ring 14, a first O-ring 11 is mounted between the adapter 16 and the probe tube 5, a rectangular sealing ring 13 is disposed on the adapter 16, the display portion includes a first upper cover 7, a second upper cover 8 and a lower cover 9, the second upper cover 8, the bottom of the first upper cover 7 is provided with a lower cover 9, the inside of the second upper cover 8 is provided with a power supply circuit board 1, a signal circuit board 2 and a display circuit board 3, the top of the first upper cover 7 is provided with a key 15 and a display screen 17, the key 15 and the display screen 17 are both connected with the display circuit board 3, the display circuit board 3 is connected with the signal circuit board 2, the signal circuit board 2 is connected with the probe circuit board 4, the power supply circuit board 1 is connected with a power supply part, the power supply circuit board 1 respectively supplies power to the display circuit board 3, the signal circuit board 2 and the probe circuit board 4, a second O-shaped ring 12 is arranged between the first upper cover 7 and the lower cover 9, the outer wall of the first upper cover 7 is provided with a name plate 19, the display screen 17 is fixedly arranged at the top of the first upper cover 7 through a display screen fixing plate 10, the display screen fixing plate 10 is provided with a display screen, one end of the five-core inserting core 20 is powered with the display part and the detection part through wires, and the other end of the five-core inserting core 20 is connected with a power supply through an MS901 cable 21.
Example 2
The invention also provides a preparation method of the multipurpose heat conduction type flow switch, which comprises the following steps:
1. performing argon arc welding on the probe tube 5 and the lower cover 9; the bottom of the lower cover 9 is provided with a base locking ring 14 which is sleeved on the periphery of the probe tube 5; after the probe circuit board 4 is subjected to heat setting, the probe circuit board is combined with a sensor heat buffer 22, then a probe tube 5 is arranged, a sensor assembly is formed, the direction is marked, and fatigue aging is carried out for 12 hours;
2. the power circuit board 1, the signal circuit board 2 and the display circuit board 3 are assembled and soldered later and connected with the sensor assembly circuit flat cable;
3. assembling a shell: performing argon arc welding on the first upper cover 7 and the second upper cover 8; assembling the display screen 17 and the display screen fixing plate 10, and then performing spot welding packaging on the assembled display screen and the first upper cover 7; the second upper cover 8 is laser welded with the socket housing 6; welding the five-core plug 20 and installing the five-core plug into the socket shell 6;
4. mounting the assembled flow switch semi-finished product on a calibration table according to the direction marked in the step 1, then calibrating, and carrying out interference fit assembly on the qualified semi-finished product and the second upper cover 8, paying attention to the direction;
5. after the assembled flow switch is connected with the adapter 16 through threads, the multipurpose heat conduction type flow switch is obtained and becomes a standard product.
When the invention is used, the probe tube 5 is contacted with a detected object, the probe circuit board 4 adopts a high-precision temperature sensitive element, the heat quantity of the sensor taken away by the medium under different flow rates is different through the high-precision heating resistor, the larger the flow rate is, the more the heat quantity is taken away, the larger the signal difference value acquired by the product is, the flow rate signal and the temperature signal are processed by the signal circuit board 2 and then transmitted to the display circuit board 3, and finally displayed on the display screen 17.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. The multipurpose thermal conductance type flow switch is characterized in that: including display portion, testing section and power supply part, the display portion lower part sets up the testing section, display portion one side sets up the power supply part, the power supply part supplies power to the display portion, the testing section includes probe pipe (5), probe pipe (5) inside sets up probe circuit board (4) and sensor heat buffer (22), probe circuit board (4) one end is connected with sensor heat buffer (22), probe circuit board (4) other end is connected with signal circuit board (2) of display portion.
2. A multi-purpose thermally conductive flow switch as defined in claim 1, wherein: the bottom of the lower cover (9) is provided with a base locking ring (14) which is sleeved on the periphery of the probe tube (5); the probe pipe (5) outside sets up adapter (16), adapter (16) and base locking ring (14) threaded connection.
3. A multi-purpose thermally conductive flow switch as defined in claim 2, wherein: a first O-shaped ring (11) is installed between the adapter (16) and the probe tube (5).
4. A multi-purpose thermally conductive flow switch as defined in claim 2 or 3, wherein: the adapter (16) is provided with a rectangular sealing ring (13).
5. A multi-purpose thermally conductive flow switch as defined in claim 1, wherein: the display part comprises a first upper cover (7), a second upper cover (8) and a lower cover (9), the second upper cover (8) is installed in the first upper cover (7) in an internal matching mode, the lower cover (9) is arranged at the bottom of the first upper cover (7), a power circuit board (1), a signal circuit board (2) and a display circuit board (3) are arranged inside the second upper cover (8), a key (15) and a display screen (17) are arranged at the top of the first upper cover (7), the key (15) and the display screen sealing gasket (18) are installed in an extruding mode, the display screen (17) and the display window sealing gasket (18) are connected with the upper cover (7) through spot welding, the display circuit board (3) is connected with the signal circuit board (2) and the power circuit board (1), and the signal circuit board (2) is connected with the probe circuit board (4).
6. A multi-purpose thermally conductive flow switch as defined in claim 5, wherein: a power supply circuit board (1) is also arranged in the second upper cover (8); the power supply circuit board (1) is connected with the power supply part, and the power supply circuit board (1) supplies power to the display circuit board (3), the signal circuit board (2) and the signal probe circuit board (4) respectively.
7. A multi-purpose thermally conductive flow switch as defined in claim 5, wherein: a second O-shaped ring (12) is arranged between the first upper cover (7) and the lower cover (9).
8. A multi-purpose thermally conductive flow switch as defined in claim 5, wherein: the display screen (17) is fixedly arranged at the top of the first upper cover (7) through a display screen fixing plate (10); and a display screen sealing gasket (18) is arranged on the display screen fixing plate (10).
9. A multi-purpose thermally conductive flow switch as defined in claim 2, wherein: the power supply part comprises a socket shell (6), a five-core inserting core (20) is arranged inside the socket shell (6), one end of the five-core inserting core (20) supplies power to the power circuit board and the detection part through an electric wire, and the other end of the five-core inserting core (20) is connected with a power supply through an MS901 cable (21).
10. The preparation method of the multipurpose thermal conductance type flow switch is characterized by comprising the following steps of:
1) argon arc welding is carried out on the probe tube (5) and the lower cover (9), and a base locking ring (14) sleeved on the periphery of the probe tube (5) is installed at the bottom of the lower cover (9); after the probe circuit board (4) is subjected to heat setting, the probe circuit board is combined with a sensor heat buffer (22), and then a probe tube (5) is arranged to form a sensor assembly for marking the direction;
2) the power circuit board (1), the signal circuit board (2) and the display circuit board (3) are assembled and then soldered, and are connected with a sensor assembly circuit flat cable to obtain a flow switch semi-finished product;
3) assembling the shell: performing argon arc welding on the first upper cover (7) and the second upper cover (8); assembling the display screen (17) and the display screen fixing plate (10) and then performing spot welding packaging on the assembled display screen and the first upper cover (7); the second upper cover (8) and the socket shell (6) are subjected to laser welding; welding a five-core plug (20) and installing the five-core plug into a socket shell (6);
4) mounting the flow switch semi-finished product assembled in the step 2) on a calibration table according to the marking direction in the step 1), calibrating, and assembling a second upper cover (8) on a lower cover (9) of the flow switch semi-finished product in an interference fit manner after the calibration is qualified to obtain the assembled flow switch;
5) and after the assembled flow switch is in threaded connection with the adapter (16), the multipurpose heat conduction type flow switch is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011258685.1A CN112325955A (en) | 2020-11-11 | 2020-11-11 | Multipurpose heat conduction type flow switch and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011258685.1A CN112325955A (en) | 2020-11-11 | 2020-11-11 | Multipurpose heat conduction type flow switch and its preparation method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101203750A (en) * | 2005-06-17 | 2008-06-18 | 马奎特紧急护理公司 | Decreasing temperature influence caused by acoustic velocity pressure in gas |
| CN102414782A (en) * | 2009-02-22 | 2012-04-11 | 迈普尔平版印刷Ip有限公司 | Preparation unit for lithogrpahy machine |
| CN205104433U (en) * | 2015-08-21 | 2016-03-23 | 麦克传感器股份有限公司 | Temperature compensating type hot type flow switch |
| CN107224193A (en) * | 2017-08-09 | 2017-10-03 | 湖州丰腾工贸有限公司 | A kind of intelligent non-stick pan of temperature-visualized |
| CN108412060A (en) * | 2018-01-10 | 2018-08-17 | 常熟市浙大紫金光电技术研究中心 | A kind of open type thermal buffer part and its method |
| CN111854959A (en) * | 2019-04-26 | 2020-10-30 | 肖殿清 | Earphone type far infrared continuous ear temperature and physiological parameter measuring device |
-
2020
- 2020-11-11 CN CN202011258685.1A patent/CN112325955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101203750A (en) * | 2005-06-17 | 2008-06-18 | 马奎特紧急护理公司 | Decreasing temperature influence caused by acoustic velocity pressure in gas |
| CN102414782A (en) * | 2009-02-22 | 2012-04-11 | 迈普尔平版印刷Ip有限公司 | Preparation unit for lithogrpahy machine |
| CN205104433U (en) * | 2015-08-21 | 2016-03-23 | 麦克传感器股份有限公司 | Temperature compensating type hot type flow switch |
| CN107224193A (en) * | 2017-08-09 | 2017-10-03 | 湖州丰腾工贸有限公司 | A kind of intelligent non-stick pan of temperature-visualized |
| CN108412060A (en) * | 2018-01-10 | 2018-08-17 | 常熟市浙大紫金光电技术研究中心 | A kind of open type thermal buffer part and its method |
| CN111854959A (en) * | 2019-04-26 | 2020-10-30 | 肖殿清 | Earphone type far infrared continuous ear temperature and physiological parameter measuring device |
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