CN206974487U - A kind of gas turbine meter - Google Patents
A kind of gas turbine meter Download PDFInfo
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- CN206974487U CN206974487U CN201720542451.7U CN201720542451U CN206974487U CN 206974487 U CN206974487 U CN 206974487U CN 201720542451 U CN201720542451 U CN 201720542451U CN 206974487 U CN206974487 U CN 206974487U
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Abstract
The utility model provides a kind of gas turbine meter, the service life for which solving existing flowmeter is short, maintenance, it is difficult in maintenance, the low technical problem of the measurement accuracy of flowmeter, it is provided with shell body, flowmeter core body is provided with inside shell body, flowmeter core body includes flowmeter core body support, the insertion of flowmeter core body support surrounding is provided with fluid passage, flowmeter core body support includes front end flowmeter core body support and rear end flowmeter core body support, front end flowmeter core body support and the rotation of rear end flowmeter core body carriage center are provided with impeller spindle, flowmeter core body impeller is fixed with impeller spindle, impeller spindle can move back and forth along fluid flow direction.The utility model can be widely applied to gas flow measurement.
Description
Technical field
A kind of gas flowmeter is the utility model is related to, more particularly to a kind of gas turbine meter.
Background technology
It is known that the method for gas flowmeter measurement flow is, when gas is entered in flowmeter, by flowmeter
During the flowmeter core body that portion is set, flowmeter core body wheel rotation is driven, by measuring in the flowmeter core body impeller unit interval
Revolution, you can calculate the flow of gas.
Existing flowmeter is provided with shell body, flowmeter core body is fixed with inside shell body, flowmeter core body is close to stream
Body input is provided with arrival end rectifier, and the insertion of flowmeter core body surrounding is provided with fluid passage, and flowmeter core-center is fixed and set
There is flowmeter core body support, flowmeter core body support is provided with the front end support of bearing, flowmeter core body support close to fluid input
Rear end bearing support is provided with close to fluid exit, the front end support of bearing and the rotation of rear end bearing carriage center are provided with impeller master
Axle, impeller spindle are connected close to fluid input with the front end support of bearing by bearing rotary, and impeller spindle exports close to fluid
End is connected with rear end bearing support by bearing rotary, and impeller spindle is fixed with flowmeter core body close to fluid input side
Impeller.
This flowmeter core, when flow meters work, flowmeter core body impeller forms rotation under the promotion of fluid
Torque, the rotation of flowmeter core body impeller is promoted, flowmeter core body impeller forms rotary motion on impeller spindle, due to impeller
Main shaft is fixed in fluid flow direction position, and axial float displacement can not be also formed under the drive of turning moment, causes impeller
The bearing of main shaft both sides can be constantly subjected to axial impulsive force, substantially reduce the service life of bearing；Meanwhile work as flow meters work
When, the fluid of output end is flowed to due to the complexity of flowmeter core, has segment fluid flow and occurs flowing backwards phenomenon, causes to flow
Direction of flow is disorderly, and this phenomenon can cause impacting for opposite direction tired with positive and negative both direction to the bearing of impeller spindle both sides again
Labor is impacted, and further increases the fatigue strength of the bearing of impeller spindle both sides, is reduced the service life of flowmeter, maintenance, is safeguarded
Difficulty, influence the measurement accuracy of flowmeter.
The content of the invention
The utility model is exactly in order to solve existing flowmeter core, when flow meters work, flowmeter core body leaf
Wheel forms turning moment under the promotion of fluid, promotes the rotation of flowmeter core body impeller, flowmeter core body impeller is in impeller spindle
Upper formation rotary motion, also can not shape under the drive of turning moment because impeller spindle is fixed in fluid flow direction position
Into axial float displacement, cause the bearing of impeller spindle both sides can be constantly subjected to axial impulsive force, substantially reduce making for bearing
Use the life-span；Meanwhile when flow meters work, the fluid of output end is flowed to due to the complexity of flowmeter core, has portion
Shunting body occurs flowing backwards phenomenon, causes fluid flow direction disorder, and this phenomenon can cause negative side to the bearing of impeller spindle both sides again
To impact and positive and negative both direction fatigue impact, further increase the fatigue strength of the bearing of impeller spindle both sides, reduce
The service life of flowmeter, repair, be difficult in maintenance, influenceing the technical problem of the measurement accuracy of flowmeter, there is provided a kind of flowmeter
Service life is grown, and maintenance, safeguards simple, the high gas turbine meter of the measurement accuracy of flowmeter.
Therefore, the technical solution of the utility model is, a kind of gas turbine meter, provided with shell body, inside shell body
Provided with flowmeter core body, flowmeter core body includes flowmeter core body support, and the insertion of flowmeter core body support surrounding is led to provided with fluid
Road, flowmeter core body support include front end flowmeter core body support and rear end flowmeter core body support, front end flowmeter core body branch
Frame and the rotation of rear end flowmeter core body carriage center are provided with impeller spindle, and flowmeter core body impeller is fixed with impeller spindle,
Impeller spindle can move back and forth along fluid flow direction.
Preferably, the distance that impeller spindle moves back and forth along fluid flow direction is 0.1-0.3mm.
Preferably, impeller spindle is located at fluid exit side and is provided with impeller spindle axial direction positioning device, impeller spindle axle
It is located to positioner on the flowmeter core body support of rear end, impeller spindle axial direction positioning device includes thimble positioning seat, and thimble is fixed
On the seat of position positioning thimble is provided with positioned at impeller spindle end face side.
Preferably, impeller spindle is located at fluid input side and is provided with impeller spindle axial direction positioning device, impeller spindle axle
It is located to positioner on the flowmeter core body support of front end, impeller spindle axial direction positioning device includes thimble positioning seat, and thimble is fixed
On the seat of position positioning thimble is provided with positioned at impeller spindle end face side.
Preferably, positioning thimble material is the high-abrasive materials such as alloy.
Preferably, impeller spindle both sides end face is respectively equipped with support lump.
Preferably, it is the high-abrasive materials such as alloy to support lump.
Preferably, impeller spindle is connected with front end flowmeter core body support by bearing rotary, front end flowmeter core body branch
Frame center is provided with front end impeller axle bearing hole, and bearing is provided with the impeller axle bearing hole of front end, and inner ring and the impeller spindle of bearing connect
Connect；Impeller spindle is connected with rear end flowmeter core body support by bearing rotary, after rear end flowmeter core body carriage center is provided with
Impeller axle bearing hole is held, is provided with bearing in the impeller axle bearing hole of rear end, the inner ring of bearing is connected with impeller spindle.
Preferably, the bearing being provided with front end impeller axle bearing hole and in the impeller axle bearing hole of rear end is steel flange axle
Hold.
Preferably, shell body is located at fluid input side and is provided with arrival end guiding device, and arrival end guiding device includes
Arrival end cowling panel and arrival end air deflector, arrival end cowling panel are located on shell body, and arrival end air deflector is fixed at front end
Flowmeter core body support is located at fluid input side, is penetrated on arrival end cowling panel and is provided with rectification hole.
Preferably, the distance of the end face outside on the inside of arrival end cowling panel with arrival end air deflector is 20-80mm.
Preferably, the distance of the end face outside on the inside of arrival end cowling panel with arrival end air deflector is 45mm.
Preferably, shell body is located at fluid exit side and is provided with port of export guiding device, and port of export guiding device includes
Port of export cowling panel and port of export air deflector, port of export cowling panel are located on shell body, and port of export air deflector is fixed at rear end
Flowmeter core body support is located at fluid exit side, is penetrated on port of export cowling panel and is provided with rectification hole.
Preferably, the distance of the end face outside on the inside of port of export cowling panel with port of export air deflector is 60-120mm.
Preferably, the distance of the end face outside on the inside of port of export cowling panel with port of export air deflector is 80mm.
The beneficial effects of the utility model are, due to being floating connection between impeller spindle and flowmeter core body support, leaf
Wheel main shaft moves back and forth along fluid flow direction, and when flow meters work, flowmeter core body impeller is under the promotion of fluid, shape
Into turning moment, the rotation of flowmeter core body impeller is promoted, flowmeter core body impeller forms rotary motion on impeller spindle, due to
Impeller spindle is floating connection in fluid flow direction, and axial float is formed under the drive of turning moment, can reduce impeller master
Axial impact force suffered by the bearing of axle both sides, extend the service life of bearing；Meanwhile when flow meters work, flow to defeated
Go out the fluid at end due to the complexity of flowmeter core, have segment fluid flow and occur flowing backwards phenomenon, cause fluid to flow to disorderly
Disorderly, but reverse impact power caused by this phenomenon can also be laid down by the opposite direction floating movement of impeller spindle, will not increase impeller
The fatigue strength of the bearing of main shaft both sides, the service life of flowmeter can be improved, improve the measurement accuracy of flowmeter.
Brief description of the drawings
Fig. 1 is a kind of structural representation of existing flowmeter；
Fig. 2 is existing flowmeter core schematic diagram；
Fig. 3 is a kind of embodiment of the present utility model；
Fig. 4 is the structural representation of the utility model flowmeter core body；
Fig. 5 is the utility model flowmeter outlet end cowling panel schematic diagram；
Fig. 6 is the utility model flowmeter arrival end cowling panel schematic diagram.
Symbol description in figure：
1. arrival end rectifier；2. housing；3. impeller lock sleeve；4. impeller spindle；5. impeller；6. dust cap；7. not
Become rusty steel flange bearing；8. the front end support of bearing；9. sender unit；10. sealing ring；11. flowmeter core body support；12. shell body；
13. fluid passage；14. flowmeter core body；15. rear end bearing support；101. arrival end cowling panel；102. arrival end air deflector；
103. alloy thimble lock sleeve；104. support lump；105. steel flange bearing；106. dust cap；107. impeller axle；108.
Front end flowmeter core body support；109. impeller；110. sender unit fixed seat；111. rear end flowmeter core body support；112. outlet
Hold air deflector；113. bushing；114. shell body；115. port of export cowling panel；116. alignment pin；117. positioning thimble；118. top
Pin positioning seat；119. flowmeter core body；120. front end impeller axle bearing hole；121. rear end impeller axle bearing hole；122. fluid leads to
Road；123. overflow aperture；124. aerial drainage macropore；125. water conservancy diversion aperture；126. water conservancy diversion macropore.
Embodiment
The utility model is described further with reference to embodiment.
It is a kind of structural representation of existing flowmeter as shown in Figure 1-2, provided with shell body 12, the inside of shell body 12 is fixed
Provided with flowmeter core body 14, flowmeter core body 14 is provided with arrival end rectifier 1, the surrounding of flowmeter core body 14 close to fluid input
Insertion is provided with fluid passage, and the center of flowmeter core body 14 is fixed with flowmeter core body support 11, and flowmeter core body support 11 leans on
Nearly fluid input is provided with the front end support of bearing 8, and flowmeter core body support 11 is provided with rear end bearing support close to fluid exit
15, the front end support of bearing 8 and the central rotation of rear end bearing support 15 are provided with impeller spindle 4, and impeller spindle 4 is close to fluid input
It is connected with the front end support of bearing 8 by bearing rotary, impeller spindle 4 passes through axle close to fluid exit and rear end bearing support 15
Rotatable connection is held, impeller spindle 4 is fixed with flowmeter core body impeller 5 close to fluid input side；This flowmeter core body
Structure, when flow meters work, flowmeter core body impeller 5 forms turning moment under the promotion of fluid, promotes flowmeter core body
Impeller 5 rotates, and flowmeter core body impeller 5 forms rotary motion on impeller spindle 4, because impeller spindle 4 is in flow of fluid side
Fixed to position, axial float displacement can not be also formed under the drive of turning moment, cause the bearing meeting of the both sides of impeller spindle 4
Axial impulsive force is constantly subjected to, substantially reduces the service life of bearing；Meanwhile when flow meters work, flow to output end
Fluid is had segment fluid flow and is occurred flowing backwards phenomenon due to the complexity of the structure of flowmeter core body 14, causes fluid flow direction disorderly, this
Kind phenomenon can cause impact and the fatigue impact of positive and negative both direction of opposite direction to the bearing of the both sides of impeller spindle 4 again, enter one
Step increases the fatigue strength of the bearing of impeller spindle both sides, reduces the service life of flowmeter, repairs, be difficult in maintenance, influenceing to flow
The measurement accuracy of gauge.
Embodiment 1
It is a kind of embodiment schematic diagram of the present utility model as shown in Figure 3-4, a kind of gas turbine meter, provided with shell
Body 14, the inside of shell body 14 are provided with flowmeter core body 119, and flowmeter core body 119 includes flowmeter core body support, flowmeter core body
The insertion of support surrounding is provided with fluid passage 122, and flowmeter core body support includes front end flowmeter core body support 108 and rear end flow
Core body support 111 is counted, front end flowmeter core body support 108 and the central rotation of rear end flowmeter core body support 111 are provided with impeller master
Axle 107, flowmeter core body impeller 109 is fixed with impeller spindle 107, between impeller spindle 107 and flowmeter core body support
It is floating connection, impeller spindle 107 can move back and forth along fluid flow direction, when gas turbine meter works, fluid
Promote flowmeter core body impeller 109, the impeller main shaft 107 of flowmeter core body impeller 109 is axially moved, with discharge fluid for
The impulsive force of flowmeter core body impeller 109, when there is the fluid of opposite direction disturbance flowing, impeller spindle 107 can be to opposite direction
It is mobile, to discharge reverse impact power of the fluid for flowmeter core body impeller 109, protect impeller spindle 107 and set thereon
Various connection members, including rotary part etc..
The distance that impeller spindle 107 moves back and forth along fluid flow direction is 0.1-0.3mm, by many experiments, 0.1-
The distance that 0.3mm is moved back and forth can discharge impulsive force of the fluid for flowmeter core body impeller 109 with very effective, while not
Influence the measurement accuracy of flowmeter, the present embodiment uses 0.2mm flying heights, by experimental results demonstrate, you can to ensure axle
The service life held, measurement accuracy can be ensured again.
As can be seen that impeller spindle 107 is located at fluid exit side and is provided with impeller spindle axial direction positioning device in Fig. 4,
Impeller spindle axial direction positioning device is located on rear end flowmeter core body support 111, and impeller spindle axial direction positioning device includes thimble
Positioning seat 118, positioning thimble 117 is provided with positioned at the end face side of impeller spindle 107 on thimble positioning seat 118；Impeller spindle 107
Impeller spindle axial direction positioning device is provided with fluid input side, impeller spindle axial direction positioning device is located at front end flowmeter core
On body support frame 120, impeller spindle axial direction positioning device includes thimble positioning seat 118, is located at impeller spindle on thimble positioning seat 118
107 end faces side are provided with positioning thimble 117.This impeller spindle axial direction positioning device is due to provided with positioning thimble 117, working as impeller
Main shaft 107 is in the presence of fluid impingement force, and when being floated along fluid direction of motion or so, positioning thimble 117 can be to impeller
The end face of main shaft 107, which is realized, to be positioned, and positioning thimble 117 uses alloy abrasion resistance material in the embodiment, can also use other wear-resisting
Material.In Fig. 4 it can also be seen that both sides end face of impeller spindle 107 is respectively equipped with support lump 104, and support lump 104 is using conjunction
Golden high-abrasive material, other high-abrasive materials can also be used, when impeller spindle 107 floats along fluid direction of motion or so, leaf
Support lump 104 and positioning thimble 117 in wheel main shaft 107 or so end face form spacing, are in flowmeter core body impeller 109
Steady-working state.
Impeller spindle 107 is connected with front end flowmeter core body support 108 by bearing rotary, front end flowmeter core body branch
The center of frame 108 is provided with front end impeller axle bearing hole 120, and bearing, the inner ring and leaf of bearing are provided with front end impeller axle bearing hole 120
Wheel main shaft 107 connects；Impeller spindle 107 is connected with rear end flowmeter core body support 111 by bearing rotary, rear end flowmeter core
The center of body support frame 111 is provided with rear end impeller axle bearing hole 121, and bearing, the inner ring of bearing are provided with rear end impeller axle bearing hole 121
It is connected with impeller spindle 107, the outer ring and axle of front end impeller axle bearing hole 120 and the bearing in rear end impeller axle bearing hole 121
Bearing bore coordinates for gap, coordinates between the inner ring and impeller spindle 107 of bearing for gap.
The bearing being provided with front end impeller axle bearing hole 120 and in rear end impeller axle bearing hole 121 is steel flange axle
Hold, the steel flange bearing is adapted to most gasmetry, is not in the technical problems such as corrosion.
Shell body 114 is located at fluid input side and is provided with arrival end guiding device, and arrival end guiding device includes entrance
End cowling panel 101 and arrival end air deflector 102, arrival end cowling panel 101 are located on shell body 114, and arrival end air deflector 102 is solid
Surely it is located at fluid input side located at front end flowmeter core body support 108, is penetrated on arrival end cowling panel 101 and be provided with rectification
The distance of hole, the inner side of arrival end cowling panel 101 and the end face outside of arrival end air deflector 102 is 20-80mm, and the embodiment uses
45mm scheme, fluid can be allowed smoothly to be flowed glibly by flowmeter core body impeller 109, will not cause to test the whirlpool of gas
Phenomena such as stream, refluence, make Meter Test more accurate.
Shell body 114 is located at fluid exit side and is provided with port of export guiding device, and port of export guiding device includes outlet
End cowling panel 115 and port of export air deflector 112, port of export cowling panel 115 are located on shell body 114, and port of export air deflector 112 is solid
Surely it is located at fluid exit side located at rear end flowmeter core body support 111, is penetrated on port of export cowling panel 115 and be provided with rectification
Hole, the inner side of port of export cowling panel 115 and the distance of the end face outside of port of export air deflector 112 are 60-120mm, and the embodiment is adopted
With 80mm scheme.
When gas turbine meter works, test gas streamwise is successively by arrival end rectifier 102, flow
Core body impeller 109, port of export cowling panel 115 are counted, testing the main flow of gas can be flowed out by the periphery of port of export cowling panel 115,
The test gas of flowmeter core body impeller 109 is flowed through, fillet is oriented to because the peripheral circumferential of port of export cowling panel 115 is provided with, is oriented to
Fillet can uniformly export test gas, wherein the gas flowed along the axis direction of port of export cowling panel 115, can be by going out
Aperture outflow among mouth end cowling panel 115, is not in the phenomenon that gas whirlpool has the inner side of port of export cowling panel 115, also not
The refluence phenomenon of test gas occurs, can so submit the precision of test, can also reduce test gas as far as possible for flowmeter
The opposition of core body impeller 109, improve the life-span of bearing.
Fig. 5 is the schematic diagram of the present embodiment port of export cowling panel 115, it can be seen from the figure that, the pars intermedia of port of export cowling panel 115
Position is provided with overflow aperture 123, flows through the fluid after flowmeter core body impeller 109 after the water conservancy diversion of port of export air deflector 112, flow direction stream
Among gauge core body 14, because the middle part of port of export cowling panel 115 is provided with overflow aperture 123, flow in flowmeter core body 14
Between fluid discharged by overflow aperture 123, reverse impact will not be formed, further improve measuring accuracy, most stream
The aerial drainage macropore 124 that body is provided with by the excircle of port of export air deflector 112 is smoothly discharged, and overall smooth fluid is uniform, instrument
Measuring accuracy is high.
Fig. 6 is the schematic diagram of the present embodiment flowmeter arrival end cowling panel 101, it can be seen from the figure that, arrival end cowling panel 101
Water conservancy diversion aperture 125 is provided with the outside of middle part, the outside of water conservancy diversion aperture 125 is provided with water conservancy diversion macropore 126, the hole of water conservancy diversion macropore 126
Footpath is more than water conservancy diversion aperture 125, most of to enter by water conservancy diversion macropore 126 when test fluid enters flowmeter core body 14, such
Design test fluid is small to the impact of the middle part of arrival end cowling panel 102, and test fluid smooth can flow through flowmeter core body impeller
109, the disturbance of fluid will not be produced.
Only as described above, only specific embodiment of the utility model, when the utility model can not be limited with this
The scope of implementation, therefore the displacement of its equivalent assemblies, or the equivalent variations made according to the utility model patent protection domain and modification,
It all should still belong to the category that the utility model claims book is covered.
Claims (10)
1. a kind of gas turbine meter, provided with shell body, flowmeter core body, the flowmeter core are provided with inside the shell body
Body includes flowmeter core body support, and the flowmeter core body support surrounding insertion is provided with fluid passage, it is characterized in that：The flow
Meter core body support includes front end flowmeter core body support and rear end flowmeter core body support, the front end flowmeter core body support with
Rear end flowmeter core body carriage center rotation is provided with impeller spindle, and flowmeter core body impeller is fixed with the impeller spindle,
The impeller spindle can move back and forth along fluid flow direction.
2. gas turbine meter according to claim 1, it is characterised in that：The impeller spindle is along fluid flow direction
The distance moved back and forth is 0.1-0.3mm.
3. gas turbine meter according to claim 1, it is characterised in that：The impeller spindle is located at fluid exit
Side is provided with impeller spindle axial direction positioning device, and the impeller spindle axial direction positioning device is located at rear end flowmeter core body support
On, the impeller spindle axial direction positioning device includes thimble positioning seat, is located at impeller spindle end face one on the thimble positioning seat
Side is provided with positioning thimble.
4. gas turbine meter according to claim 1, it is characterised in that：The impeller spindle is located at fluid input
Side is provided with impeller spindle axial direction positioning device, and the impeller spindle axial direction positioning device is located at front end flowmeter core body support
On, the impeller spindle axial direction positioning device includes thimble positioning seat, is located at impeller spindle end face one on the thimble positioning seat
Side is provided with positioning thimble.
5. the gas turbine meter according to claim 3 or 4, it is characterised in that：The positioning thimble material is alloy
Deng high-abrasive material.
6. gas turbine meter according to claim 1, it is characterised in that：Impeller spindle both sides end face is set respectively
There is support lump.
7. gas turbine meter according to claim 6, it is characterised in that：The support lump is the wear-resisting materials such as alloy
Material.
8. gas turbine meter according to claim 1, it is characterised in that：The impeller spindle and front end flowmeter core
Body support frame is connected by bearing rotary, and the front end flowmeter core body carriage center is provided with front end impeller axle bearing hole, before described
Bearing is provided with the impeller axle bearing hole of end, the inner ring of the bearing is connected with impeller spindle；The impeller spindle and rear end flow
Meter core body support is connected by bearing rotary, and the rear end flowmeter core body carriage center is provided with rear end impeller axle bearing hole, institute
State in the impeller axle bearing hole of rear end and be provided with bearing, the inner ring of the bearing is connected with impeller spindle.
9. gas turbine meter according to claim 8, it is characterised in that：In the front end impeller axle bearing hole with after
The bearing being provided with the impeller axle bearing hole of end is steel flange bearing.
10. gas turbine meter according to claim 1, it is characterised in that：The shell body is located at fluid input
Side is provided with arrival end guiding device, and the arrival end guiding device includes arrival end cowling panel and arrival end air deflector, described
Arrival end cowling panel is located on shell body, and the arrival end air deflector is fixed at front end flowmeter core body support, and to be located at fluid defeated
Enter and hold side, penetrated on the arrival end cowling panel and be provided with rectification hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720542451.7U CN206974487U (en) | 2017-05-16 | 2017-05-16 | A kind of gas turbine meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720542451.7U CN206974487U (en) | 2017-05-16 | 2017-05-16 | A kind of gas turbine meter |
Publications (1)
| Publication Number | Publication Date |
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| CN206974487U true CN206974487U (en) | 2018-02-06 |
Family
ID=61412932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720542451.7U Active CN206974487U (en) | 2017-05-16 | 2017-05-16 | A kind of gas turbine meter |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932030A (en) * | 2017-05-16 | 2017-07-07 | 威海坤科流量仪表有限公司 | Gas turbine meter |
| CN108303147A (en) * | 2018-03-07 | 2018-07-20 | 合肥云峰信息科技有限公司 | A kind of intelligent pipeline fluid flow detection equipment |
-
2017
- 2017-05-16 CN CN201720542451.7U patent/CN206974487U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932030A (en) * | 2017-05-16 | 2017-07-07 | 威海坤科流量仪表有限公司 | Gas turbine meter |
| CN108303147A (en) * | 2018-03-07 | 2018-07-20 | 合肥云峰信息科技有限公司 | A kind of intelligent pipeline fluid flow detection equipment |
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