CN206348028U - A kind of thermal gas flowmeter structure - Google Patents
A kind of thermal gas flowmeter structure Download PDFInfo
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- CN206348028U CN206348028U CN201621457315.XU CN201621457315U CN206348028U CN 206348028 U CN206348028 U CN 206348028U CN 201621457315 U CN201621457315 U CN 201621457315U CN 206348028 U CN206348028 U CN 206348028U
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- flow module
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Abstract
The utility model provides a kind of thermal gas flowmeter structure, is related to technical field of measurement and test.It includes the cavity that bottom plate is hermetically connected with the shell, housing is provided with the air inlet connected with cavity and gas outlet, provided with the control valve being connected with air inlet in cavity, silencer and at least two gas flow modules are additionally provided with cavity, gas flow module is exported and muffler inlet parallel communication, muffler outlet is connected with gas outlet, and deflector is provided with above control valve underlying gas flow module.The utility model solves thermal gas flowmeter in the prior art and widens the technical problem that range ability is complicated, gas flow module is easily contaminated influence measurement accuracy.The utility model has the beneficial effect that：Flowmeter range is widened by setting each gas flow module parameter to reach, it is easy to operate.The flow that gas flow module is received is identical uniform, and fluid stable, the accuracy of measuring is high.The Particulate Pollution gas flow module for preventing gas from carrying, metric results are reliable.
Description
Technical field
The utility model is related to technical field of measurement and test, more particularly, to a kind of thermal gas flowmeter structure.
Background technology
At present, being commercially used for the instrument of natural gas flow measuring mainly has vortex-shedding meter, turbine flowmeter and ultrasound
Low uniform velocity formula flowmeter and volumetric flowmeter.Volumetric flowmeter and velocity flowmeter, are operating mode meterings.When
During the pressure rise of measured medium, its measurement range is basically unchanged.It was found from equation of gaseous state, operating mode measures range is constant,
Condition measurement range is exactly marked to accordingly increase.The core devices of flow measurement are realized as it using heat type gas flow module
Thermal gas flowmeter is mark condition metering, and the place of its most competitiveness is that accurate measurement to low discharge and directly marks condition
Measurement.But the problem of directly mark condition is measured in turn is that, when tested gas pressure rises, its mark condition measurement range is constant, also
It is to say that its working condition measuring scope diminishes.Meanwhile, anti-fouling performance is whether superior one of measurement thermal gas flowmeter performance
Item important indicator.Existing hot type industrial combustion gas table is as metering module using gas flow module.Generally simply using single gas
Body flow module is as metering module, and this can cause range to be restricted.Chinese patent application publication No. CN104034379 A, Shen
Please date of publication September in 2014 10 days, the application for a patent for invention file of entitled " electronic type wide-range industry and commerce diaphragm gas meter ",
Disclose a kind of improved structure.It includes protection lower casing, upper lid, master control circuit plate, liquid crystal display, base, sensor branch
Frame, metering sampling sensor, movement connecting tube, the upper shell of protection, combine movement escape pipe, measure movement, temperature/pressure sensor, machine
Core support member and seal, multiple metering movements are connected by movement connecting tube and combination movement escape pipe, and temperature/pressure sensor is only
Vertical to be installed on metering movement, metering movement is fixed in protection lower casing by movement support member, and seal is upper outer with protection
Shell is made up of nut or clamp connection and is mounted on sensor stand, sensor branch on gas meter, flow meter complete machine, each metering movement
Metering sampling sensor is installed on frame, each metering sampling sensor and temperature/pressure sensor by wire respectively with master control line
Road plate connection, liquid crystal display is arranged on master control circuit plate, and master control circuit plate is fixed on base, base and gas meter, flow meter complete machine
Connection, chassis outer side is provided with lid.The structure realizes widening for gas flow metering range ability, but the structure is multiple
It is miscellaneous, manufacturing cost and use cost are improved, power consumption is big.
Utility model content
The complicated manufacturing cost height of range ability, gas stream are widened in order to solve thermal gas flowmeter in the prior art
The technical problem that module is easily contaminated influence measurement accuracy is measured, a kind of compact conformation of the utility model offer is reasonable, prevent gas
Body flow module is contaminated to widen range thermal gas flowmeter structure.
The technical solution of the utility model is：A kind of thermal gas flowmeter structure, it includes bottom plate and connected with housing seal
The cavity connect, housing is provided with the air inlet connected with cavity and gas outlet, cavity provided with the control valve being connected with air inlet, chamber
Silencer and at least two gas flow modules, the outlet of gas flow module and muffler inlet parallel communication are additionally provided with vivo,
Muffler outlet is connected with gas outlet, and deflector is provided with above control valve underlying gas flow module.By to each gas stream
The setting of module parameter is measured, range is widened, it is easy to operate.Air-flow is by entering back into gas flow module, stationary flow after deflector
State, prevent Particulate Pollution gas flow module in gas；Silencer reduces noise, and reduction is done to gas flow module metering
Disturb, improve the accuracy of measuring.
Preferably, gas flow module import axis is parallel to each other and vertical with air inlet axis；Each gas
The flow that body flow module is received is identical uniform, it is ensured that accurate measurement.
Preferably, deflector is smoothly connected and is integrated by horizontal plane deflector, inclined-plane deflector and vertical plane deflector,
Deflector side view is L-shaped；Gas flow module steady-state gas flow is provided, the Particulate Pollution gas flow mould for preventing gas from carrying
Group, metric results are accurately and reliably.Inclined-plane deflector connection horizontal plane deflector and vertical plane deflector so that structure is more stepped up
Gather.
Preferably, horizontal plane deflector plane is vertical with air inlet axis, vertical plane deflector plane and air inlet
Axis parallel；Air-flow carries particulate separation with air-flow, effectively prevents gas flow module to be contaminated.
Preferably, horizontal plane deflector is provided with pod apertures, pod apertures overlook into Y shape；Pod apertures connect air inlet and gas
Body flow module import, mitigation of gases flow velocity improves the accuracy of measuring.
Compared with prior art, the beneficial effects of the utility model are：By setting each gas flow module parameter, reach
It is easy to operate to flowmeter range is widened.Air-flow passes through deflector, fluid stable, each gas before entering gas flow module
The flow that flow module is received is identical uniform, reduces the interference measured to gas flow module, improves the accuracy of measuring.Deflector
The Particulate Pollution gas flow module that separation gas is carried, metric results are reliable.
Brief description of the drawings
Accompanying drawing 1 is the utility model schematic perspective view；
Accompanying drawing 2 is the front view that the utility model removes previous section housing；
Accompanying drawing 3 is that the utility model gas flow module is connected top view with silencer；
Accompanying drawing 4 is the utility model deflector schematic perspective view.
In figure：1- control valves；2- deflectors；3- gas flow modules；4- bottom plates；5- silencers；6- housings；21- levels
Face deflector；22- inclined-planes deflector；23- vertical plane deflectors；61- air inlets；62- gas outlets；211- pod apertures.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
Embodiment 1：
As shown in Fig. 1-4, a kind of thermal gas flowmeter structure, it includes the cavity that bottom plate 4 is tightly connected with housing 6.
Bottom plate 4 is flat board.The lower end of housing 6 is tightly connected with bottom plate 4.Housing 6 is provided with the air inlet 61 connected with cavity and gas outlet 62.
Air inlet 61 and gas outlet 62 are connected with the upper surface of housing 6.Provided with the control valve 1 being connected with air inlet 61 in cavity.Control valve 1
Lower section is provided with silencer 5 and at least two gas flow modules 3.The quantity of gas flow module 3 is actual according to flowmeter by designing
The range of flow determination needed, the present embodiment explanation by taking two gas flow modules 3 as an example.The import of gas flow module 3 is loudspeaker
Shape.Two gas flow modules 3 are close to arrangement.Each import axis of gas flow module 3 is parallel to each other and with entering
The axis of gas port 61 is vertical.Each outlet of gas flow module 3 is connected with the inlet parallel of silencer 5.Silencer 5 is exported and outlet
Mouth 62 is connected.The top of 1 underlying gas flow module of control valve 3 is provided with deflector 2.Deflector 2 is by horizontal plane deflector 21, inclined-plane
Deflector 22 and vertical plane deflector 23 are smoothly connected and are integrated.The side view of deflector 2 is L-shaped.Horizontal plane deflector 21 is provided with and led
Discharge orifice 211.Pod apertures 211 overlook into Y shape.The plane of horizontal plane deflector 21 is vertical with the axis of air inlet 61.Deflector 2 and shell
The madial wall of body 6 is fixed.Pod apertures 211 connect the import of air inlet 61 and gas flow module 3.The plane of vertical plane deflector 23 with
The axis parallel of air inlet 61.The lower end of vertical plane deflector 23 is adjacent to bottom plate 4.Inclined-plane deflector 22 is located under air inlet 61
Side.Look up from the bottom up, the covering air inlet 61 of inclined-plane deflector 22.
Control valve 1 is opened, and air-flow enters cavity from air inlet 61.Into the gas shock of cavity to inclined-plane deflector 22.
Main flow of gas right-angled bend flows into the upper surface of horizontal plane deflector 21, by pod apertures 211, the import of inflow gas flow module 3,
Pass sequentially through gas flow module 3 and silencer 5 is discharged from gas outlet 62.The numerical value that each gas flow module 3 is measured simultaneously
Upload to controller（Do not show in figure）, controller can show total flow.Into the gas shock of cavity to inclined-plane deflector 22
Meanwhile, the particulate matter that gas is carried also impacts inclined-plane deflector 22, and particulate matter hits inclined-plane deflector 22 and slowed down, along vertical
Face deflector 32 falls into vertical plane deflector 32 with being stored in bottom plate 4, the cavity of the formation of housing 6.
Claims (6)
1. a kind of thermal gas flowmeter structure, it includes bottom plate（4）With housing（6）The cavity being tightly connected, housing（6）It is provided with
The air inlet connected with cavity（61）And gas outlet（62）, it is provided with and air inlet in cavity（61）The control valve of connection（1）, it is special
Levy and be：Silencer is additionally provided with the cavity（5）At least two gas flow modules（3）, the gas flow module（3）
Outlet and silencer（5）Inlet parallel is connected, silencer（5）Outlet and gas outlet（62）Connection, the control valve（1）Lower section gas
Body flow module（3）Top is provided with deflector（2）.
2. a kind of thermal gas flowmeter structure according to claim 1, it is characterised in that：The gas flow module
（3）Import axis is parallel to each other and and air inlet（61）Axis is vertical.
3. a kind of thermal gas flowmeter structure according to claim 1, it is characterised in that：The deflector（2）By water
Plane deflector（21）, inclined-plane deflector（22）With vertical plane deflector（23）It is smoothly connected and is integrated, deflector（2）Side view into
L-shaped.
4. a kind of thermal gas flowmeter structure according to claim 1 or 3, it is characterised in that：Horizontal plane deflector
（21）Plane and air inlet（61）Axis is vertical, vertical plane deflector（23）Plane and air inlet（61）Axis parallel.
5. a kind of thermal gas flowmeter structure according to claim 3, it is characterised in that：Horizontal plane deflector（21）If
There are pod apertures（211）, pod apertures（211）Overlook into Y shape.
6. a kind of thermal gas flowmeter structure according to claim 4, it is characterised in that：Horizontal plane deflector（21）If
There are pod apertures（211）, pod apertures（211）Overlook into Y shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621457315.XU CN206348028U (en) | 2016-12-28 | 2016-12-28 | A kind of thermal gas flowmeter structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621457315.XU CN206348028U (en) | 2016-12-28 | 2016-12-28 | A kind of thermal gas flowmeter structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206348028U true CN206348028U (en) | 2017-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621457315.XU Active CN206348028U (en) | 2016-12-28 | 2016-12-28 | A kind of thermal gas flowmeter structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN206348028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869406A (en) * | 2018-06-11 | 2018-11-23 | 中车大连机车研究所有限公司 | A kind of muffler convenient for measuring booster air mass flow |
| CN108955797A (en) * | 2018-08-13 | 2018-12-07 | 金卡智能集团股份有限公司 | A kind of flow straightener and gas dosing instrument for gas dosing |
-
2016
- 2016-12-28 CN CN201621457315.XU patent/CN206348028U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869406A (en) * | 2018-06-11 | 2018-11-23 | 中车大连机车研究所有限公司 | A kind of muffler convenient for measuring booster air mass flow |
| CN108955797A (en) * | 2018-08-13 | 2018-12-07 | 金卡智能集团股份有限公司 | A kind of flow straightener and gas dosing instrument for gas dosing |
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