CN211651707U - Thermal gas mass flowmeter - Google Patents

Thermal gas mass flowmeter Download PDF

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Publication number
CN211651707U
CN211651707U CN201922503700.3U CN201922503700U CN211651707U CN 211651707 U CN211651707 U CN 211651707U CN 201922503700 U CN201922503700 U CN 201922503700U CN 211651707 U CN211651707 U CN 211651707U
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China
Prior art keywords
pipe
flow meter
gas mass
communicating pipe
end cover
Prior art date
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Active
Application number
CN201922503700.3U
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Chinese (zh)
Inventor
沈勇刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Tianchuan Automation Instrument Co ltd
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Jiangsu Tianchuan Automation Instrument Co ltd
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Priority to CN201922503700.3U priority Critical patent/CN211651707U/en
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Publication of CN211651707U publication Critical patent/CN211651707U/en
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Abstract

The utility model discloses a gaseous mass flow meter of hot type relates to the electronic equipment field, and this gaseous mass flow meter of hot type is including the flowmeter body that is equipped with signal input part and signal output and power end, and flowmeter body intercommunication has communicating pipe, and the communicating pipe tip is equipped with the end cover, and communicating pipe intercommunication has survey buret, surveys buret both ends and all is equipped with the ring flange, surveys buret intercommunication and has the screwed pipe. This hot type gas mass flowmeter has improved the installation position of sensor and the communicating pipe connected mode of converter, and not only easy dismounting, the leakproofness has ensured moreover, effectively prevents to be surveyed the gas leakage.

Description

Thermal gas mass flowmeter
Technical Field
The utility model relates to an electronic equipment field, concretely relates to hot type gas mass flow meter.
Background
Thermal gas mass flowmeters are instruments that measure the flow of gas using the principle of thermal diffusion. The sensor consists of two reference level thermal resistors. One is a velocity sensor RH and one is a temperature sensor RMG which measures the change in gas temperature. When the two reference level thermal resistors are placed in the gas to be measured, the velocity sensor RH is heated and the other temperature sensor RMG is used to sense the temperature of the gas to be measured. As the gas flow rate increases, the gas flow carries more heat away and the temperature of the velocity sensor RH drops. The existing thermal gas mass flowmeter is designed more traditionally, the connection mode of a flange plate is usually adopted for the connection mode of the installation part of a sensor and a communicating pipe of a converter, the connection, the disassembly and the assembly are inconvenient, the sealing performance cannot be guaranteed, and the gas leakage is often easily measured.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a hot type gas mass flow meter, has improved the installation position of sensor and the communicating pipe connected mode of converter, and not only easy dismounting, the leakproofness has ensured moreover, effectively prevents to be surveyed the gas leakage.
In order to achieve the above object, the present invention provides the following technical solutions:
this gaseous mass flow meter of hot type is including the flowmeter body that is equipped with signal input part and signal output and power end, flowmeter body intercommunication has pipy communicating pipe, the sealed end cover that is equipped with of communicating pipe tip, communicating pipe intercommunication has the tubulose survey buret of circle, survey buret both ends and all be equipped with the ring flange perpendicularly, survey perpendicular intercommunication in buret center department has the tubulose sensor installation pipe of circle, sensor installation pipe and the mutual screw-thread fit of end cover, be equipped with sealed the pad in the end cover, install speedtransmitter and temperature sensor in the sensor installation pipe, speedtransmitter and temperature sensor all pass the end cover through the data line and communicating pipe and this body coupling of flowmeter.
As further optimization of the technical scheme, the flowmeter body is an existing common thermal gas mass flowmeter.
As a further optimization of the technical scheme, the communicating pipe and the end cover are both made of stainless steel and are connected through welding.
As a further optimization of the technical scheme, the measuring tube and the flange plate are both made of stainless steel and are connected through welding.
As a further optimization of the technical scheme, the sensor installation pipe is made of stainless steel and is connected with the measuring pipe through welding.
The beneficial effect of adopting above technical scheme is: when the thermal gas mass flowmeter is installed, the flange plate can be hermetically connected with the flange plate of the measured pipeline through bolts and nuts, and the measuring pipe is communicated with the measured pipeline. Gas flows from the measured pipe into the measuring pipe and the sensor mounting pipe. The speed sensor is heated and another temperature sensor is used to sense the temperature of the gas being measured. Maintenance personal can conveniently unscrew the end cover on the sensor installation pipe and overhaul the sensor, and the threaded connection of end cover and sensor installation pipe is equipped with sealed the pad, and not only easy dismounting, the leakproofness is good moreover. This hot type gas mass flowmeter has improved the installation position of sensor and the communicating pipe connected mode of converter, and not only easy dismounting, the leakproofness has ensured moreover, effectively prevents to be surveyed the gas leakage.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a front view of the thermal gas mass flow meter of the present invention;
fig. 2 is a left side view of the thermal gas mass flowmeter of the present invention.
The flowmeter comprises a flowmeter body 1, a measuring pipe 2, a flange plate 3, a communicating pipe 4, a sensor mounting pipe 5, an end cover 6, a signal input end 7, a signal output end 8 and a power supply end.
Detailed Description
The following describes a preferred embodiment of the thermal gas mass flowmeter according to the present invention with reference to the drawings.
Fig. 1 and 2 show a specific embodiment of the thermal gas mass flowmeter of the present invention:
combine fig. 1 and fig. 2, this gaseous mass flowmeter of hot type is including being equipped with signal input part 7 and signal output and power end 8's flowmeter body 1, flowmeter body 1 intercommunication has pipy communicating pipe 4, 4 end seal of communicating pipe are equipped with cylindric end cover 6, 4 intercommunications of communicating pipe have pipe-like survey buret 2, survey buret 2 both ends and all be equipped with ring flange 3 perpendicularly, survey buret 2 center department perpendicular intercommunication has pipe-like sensor installation pipe 5, sensor installation pipe 5 and the mutual screw-thread fit of end cover 6, be equipped with sealed the pad in the end cover 6, install speedtransmitter and temperature sensor in the sensor installation pipe 5, speedtransmitter and temperature sensor all pass end cover 6 and communicating pipe 4 through the data line and are connected with flowmeter body 1.
The flowmeter body 1 is an existing common thermal gas mass flowmeter. The communicating pipe 4 and the end cover 6 are both made of stainless steel, the structure is firm and durable, the corrosion resistance is good, and the communicating pipe 4 and the end cover 6 are connected through welding. The measuring pipe 2 and the flange plate 3 are both made of stainless steel, are firm and durable, have good corrosion resistance, and are connected by welding. The sensor mounting pipe 5 is made of stainless steel, is firm and durable, has good corrosion resistance, and is connected with the measuring pipe 2 by welding.
The sensor of the series of flowmeters is provided with two standard-grade RTDs, one is used as a heat source, the other is used for measuring the temperature of the fluid, when the fluid flows, the temperature difference between the RTDs and the fluid is in a linear relation with the flow, and the relation is converted into the linear output of a flow measuring signal through a microelectronic control technology.
When the thermal gas mass flowmeter is installed, the flange 3 can be hermetically connected with the flange of the measured pipeline through bolts and nuts, and the measuring pipe 2 is communicated with the measured pipeline. Gas flows from the measured pipe into the measuring pipe 2 and the sensor mounting pipe 5. The speed sensor is heated and another temperature sensor is used to sense the temperature of the gas being measured. Maintenance personal can conveniently unscrew end cover 6 on sensor installation pipe 5 and overhaul the sensor, and end cover 6 and the threaded connection of sensor installation pipe 5 are equipped with sealed the pad, and not only easy dismounting, the leakproofness is good moreover. This hot type gas mass flowmeter has improved the mounting part of sensor and the communicating pipe 4 connected mode of converter, and not only easy dismounting, the leakproofness has ensured moreover, effectively prevents to be surveyed the gas leakage.
The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept, and these all fall into the protection scope of the present invention.

Claims (5)

1. A thermal gas mass flow meter characterized by: the hot type gas mass flow meter comprises a flow meter body (1) provided with a signal input end (7) and a signal output end (8), the flow meter body (1) is communicated with a tubular communicating pipe (4), the end part of the communicating pipe (4) is sealed and provided with a cylindrical end cover (6), the communicating pipe (4) is communicated with a round tubular measuring pipe (2), two ends of the measuring pipe (2) are respectively and vertically provided with a flange plate (3), the center of the measuring pipe (2) is vertically communicated with a round tubular sensor mounting pipe (5), the sensor mounting pipe (5) is in mutual threaded fit with the end cover (6), a sealing gasket is arranged in the end cover (6), a speed sensor and a temperature sensor are mounted in the sensor mounting pipe (5), and the speed sensor and the temperature sensor all pass through the end cover (6) and the communicating pipe (4) through data lines to be connected.
2. The thermal gas mass flow meter according to claim 1, characterized in that: the flowmeter body (1) is an existing common thermal gas mass flowmeter.
3. The thermal gas mass flow meter according to claim 1, characterized in that: the communicating pipe (4) and the end cover (6) are both made of stainless steel, and the communicating pipe (4) and the end cover (6) are connected through welding.
4. The thermal gas mass flow meter according to claim 1, characterized in that: the measuring pipe (2) and the flange plate (3) are both made of stainless steel, and the measuring pipe (2) and the flange plate (3) are both connected through welding.
5. The thermal gas mass flow meter according to claim 1, characterized in that: the sensor mounting pipe (5) is made of stainless steel, and the sensor mounting pipe (5) is connected with the measuring pipe (2) through welding.
CN201922503700.3U 2019-12-31 2019-12-31 Thermal gas mass flowmeter Active CN211651707U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922503700.3U CN211651707U (en) 2019-12-31 2019-12-31 Thermal gas mass flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922503700.3U CN211651707U (en) 2019-12-31 2019-12-31 Thermal gas mass flowmeter

Publications (1)

Publication Number Publication Date
CN211651707U true CN211651707U (en) 2020-10-09

Family

ID=72703014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922503700.3U Active CN211651707U (en) 2019-12-31 2019-12-31 Thermal gas mass flowmeter

Country Status (1)

Country Link
CN (1) CN211651707U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114252120A (en) * 2021-12-31 2022-03-29 江苏迅创科技股份有限公司 Micro-range thermal type gas mass flow meter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114252120A (en) * 2021-12-31 2022-03-29 江苏迅创科技股份有限公司 Micro-range thermal type gas mass flow meter
CN114252120B (en) * 2021-12-31 2022-09-23 熊萌娇 Micro-range thermal type gas mass flow meter

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