CN211877132U

CN211877132U - Novel V-cone flowmeter

Info

Publication number: CN211877132U
Application number: CN202020658706.8U
Authority: CN
Inventors: 吕春放; 张明
Original assignee: Hangzhou Complete Set Of Throttle Device Co ltd
Current assignee: Hangzhou Complete Set Of Throttle Device Co ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-11-06
Anticipated expiration: 2030-04-26

Abstract

The utility model discloses a novel V awl flowmeter relates to the technical field of flowmeter. In the prior art, the V-cone flowmeter is fixedly connected with the V-cone flowmeter body in a welding mode, the disassembly is very troublesome after the production of the product, the whole machine needs to be newly designed, produced and calibrated after the flow changes, the flexibility is poor, and once the parameters change, great unnecessary economic loss is brought to a user. This scheme is including surveying buret, the lateral wall of surveying buret communicates respectively has positive pressure pipe and negative pressure pipe, survey and be provided with the V type awl core in the buret, it has the honeycomb duct coaxial with surveying buret to run through in the V type awl core, the honeycomb duct is close to the constriction portion one end of V type awl core and is provided with the stay tube that communicates with the negative pressure pipe, the stay tube can be dismantled with the honeycomb duct and be connected the setting. This scheme has the convenience and changes V type awl core to the function of adaptation different flow reduces the use cost of enterprise.

Description

Novel V-cone flowmeter

Technical Field

The utility model belongs to the technical field of the technique of flowmeter and specifically relates to a novel V awl flowmeter is related to.

Background

The V-cone flowmeter is a novel flow measuring device which is generally adopted in China at present, the basic principle of the V-cone flowmeter is differential pressure type, but the V-cone flowmeter breaks through many limitations of the traditional differential pressure type flowmeter, and the V-cone flowmeter is different from other flowmeters in that the minimum flow cross section of a common throttling device is circular, and the minimum flow cross sections of the V-cone flowmeter and the V-cone flowmeter are annular. When fluid flows through a gap formed by a V-shaped conical core suspended in a pipeline and a pipe wall, the flow velocity of the fluid is accelerated, the maximum end of the V-shaped conical core reaches the maximum, a low-pressure area is formed at the downstream of the V-shaped conical core, so that differential pressure is generated in front of and behind the V-shaped conical core, and the flow is measured by measuring the differential pressure.

The V-cone flow sensor and the flowmeter are widely applied to metering and over-measurement in industries such as petroleum, chemical engineering, natural gas, mining and metallurgy, steel, electric power, water conservancy, water supply and drainage, papermaking, sugar manufacturing, pharmacy, brewing, beverage, textile, printing and dyeing, chemical fiber, environmental protection, municipal engineering and the like.

The V-cone flowmeter of the existing product is fixedly connected with a V-cone flowmeter body in a welding mode, the disassembly is very troublesome after the product is manufactured, when the flow is changed, the whole machine needs to be manufactured and calibrated from a new design, the flexibility is poor, and once the parameters are changed, great unnecessary economic loss is brought to a user.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a novel V awl flowmeter, this scheme has the convenience and changes V type awl core to adapt to the function of different flows, reduce the use cost of enterprise.

In order to achieve the above purpose, the utility model adopts the following technical scheme: including surveying buret, the both ends of surveying buret are provided with the ring flange respectively, survey the lateral wall of buret and seted up two and lie in surveying buret and survey the through-hole with one side, two the through-hole communicates respectively has positive pressure tube and negative pressure tube to get, survey intraductal being provided with rather than coaxial V type awl core, it has the honeycomb duct coaxial with surveying buret to run through in the V type awl core, the honeycomb duct is close to the constriction part one end that the V type awl core is provided with the stay tube that connects with the negative pressure tube to get, the stay tube can dismantle with the honeycomb duct and.

By adopting the technical scheme, the supporting tube and the flow guide tube are detachably connected, so that an operator can conveniently replace the V-shaped conical core, and the problem that the welded V-shaped conical core is inconvenient to detach is solved; simultaneously, different V-shaped cone cores can be selected and installed according to the flow in the measuring pipe, so that the compatibility of the V-cone flowmeter is improved, and the use cost of an enterprise is reduced.

Further, the supporting tube and the guide tube are connected through threads.

Through adopting above-mentioned technical scheme, the stay tube passes through threaded connection with the honeycomb duct, can guarantee the axiality of stay tube and honeycomb duct, makes things convenient for operating personnel to dismantle V type awl core simultaneously, and need not other specialized tool.

Further, the inner diameters of the supporting tube and the flow guide tube are the same.

By adopting the technical scheme, the inner diameters of the supporting tube and the flow guide tube are the same, so that liquid in the measuring tube can smoothly enter the supporting tube from the flow guide tube and is discharged from the negative pressure taking tube, pressure change and pressure loss caused by the difference of the inner diameters of the supporting tube and the flow guide tube are reduced, and the stability of the V-cone flowmeter during measurement is improved.

Further setting, the inside of the one end that the stay tube was kept away from to the honeycomb duct is provided with the flow equalizing board, the equipartition has a plurality of flow equalizing holes on the flow equalizing board.

By adopting the technical scheme, the flow equalizing plate can equalize the flow of the liquid entering the flow guide pipe, so that the liquid can uniformly enter the negative pressure taking pipe, and the stability of the V-cone flowmeter during measurement is improved; meanwhile, due to the arrangement of the flow equalizing holes, the probability that waste residues in liquid enter the negative pressure tapping pipe is reduced to a certain extent, and therefore the service life of the V-cone flowmeter is prolonged.

Further setting, the periphery wall of V type awl core is provided with the support frame, support frame one end is connected with V type awl core, the support frame other end is connected with survey buret.

Through adopting above-mentioned technical scheme, set up the support frame, can support V type awl core, avoided V type awl core because the problem that the interior liquid of measuring tube flows and rocks, be favorable to improving V and bore flowmeter measuring stability and life.

Further setting, the support frame including with the support inner circle of being connected of the periphery wall of V type awl core, with survey buret inner wall connection's support outer lane, connection support the inner circle and support the bracing piece of outer lane, the bracing piece is provided with a plurality ofly and evenly arranges around the axis that supports the inner circle.

Through adopting above-mentioned technical scheme, set up the support outer lane of being connected with survey buret, with the support inner circle of being connected with V type awl core and with support inner circle and the bracing piece of supporting the outer lane and being connected, stability when can improving the support of support frame.

Further, the support inner ring is in threaded connection with the outer peripheral wall of the V-shaped conical core, and the support outer ring is in screwed connection with the inner wall of the measuring tube.

Through adopting above-mentioned technical scheme, because the periphery wall that supports inner circle and V type awl core passes through threaded connection, can make things convenient for operating personnel to separate and dismantle support frame and V type awl core for when V type awl core is changed, needn't change the support frame together, thereby reduced the use cost of enterprise.

Further setting, the cross section of bracing piece is the wing section structure, the periphery wall of support inner circle sets up with the periphery wall junction smooth transition of V type awl core, the one side that the measuring tube inner wall was kept away from to the support outer lane is provided with curved spigot surface.

Through adopting above-mentioned technical scheme, can reduce the pressure loss that liquid flowed through the support frame to a certain extent, reduce unnecessary energy loss.

Further, the V-shaped conical core is of a hollow structure.

By adopting the technical scheme, the V-shaped cone core with the hollow structure can reduce the weight of the V-shaped cone core, save the manufacturing cost of the V-shaped cone flowmeter, reduce the supporting weight of the supporting frame and simultaneously avoid influencing the normal use of the V-shaped cone flowmeter.

Further, the outer peripheral wall of the measuring pipe is provided with an annular thickened area, and the V-shaped conical core is located in an area surrounded by the thickened area.

Through adopting above-mentioned technical scheme, the liquid of flowing through survey buret can be because the hindrance and the extruded effect of V type awl core for the velocity of flow of liquid promotes, and the pressure of surveying buret also can rise rapidly thereupon, through setting up thickened area, can improve the intensity of surveying buret, thereby improves V and bores the life of flowmeter.

To sum up, the utility model discloses a following at least one useful technological effect:

1. in the scheme, the supporting tube and the flow guide tube are connected through the threads, so that an operator can conveniently replace the V-shaped cone core, and the problem that a welded V-shaped cone is inconvenient to disassemble is solved; meanwhile, different V-shaped cones can be selectively installed according to the flow in the measuring pipe, so that the compatibility of the V-cone flowmeter is improved, and the use cost of an enterprise is reduced;

2. in the scheme, the flow equalizing plate is arranged inside one end of the flow guide pipe, which is far away from the supporting pipe, so that liquid can uniformly enter the negative pressure taking pipe, the stability of the V-cone flowmeter during measurement is improved, and the probability that waste residues in the liquid enter the negative pressure taking pipe is reduced to a certain extent;

3. in the scheme, the support frame is arranged, so that the problem that the V-shaped conical core shakes due to the flow of liquid in the measuring pipe can be avoided;

4. in this scheme, the bracing piece of wing section structure, the periphery wall of support inner circle and the setting of the periphery wall junction smooth transition of V type awl core and curved spigot surface can reduce the loss of pressure of liquid flow through the support frame to a certain extent, reduces unnecessary energy loss.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a first embodiment of the present invention;

fig. 2 is an internal cross-sectional view of a first embodiment of the present invention;

fig. 3 is a schematic three-dimensional structure of the support frame in fig. 2.

In the figure, 1, measuring the tube; 2. a flange plate; 3. a through hole; 4. a positive pressure tapping pipe; 5. a negative pressure tapping pipe; 6. a V-shaped conical core; 7. a flow guide pipe; 8. supporting a tube; 9. a flow equalizing plate; 10. a flow equalizing hole; 11. a support frame; 12. supporting the inner ring; 13. a support outer ring; 14. a support bar; 15. a guide surface; 16. and a thickened region.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in figures 1 and 2, for the novel V-cone flowmeter disclosed by the utility model, comprising a measuring tube 1, two ends of the measuring tube 1 are respectively provided with a flange 2, the side wall of the measuring tube 1 is provided with two through holes 3 positioned on the same side of the measuring tube 1, the two through holes 3 are respectively communicated with a positive pressure taking tube 4 and a negative pressure taking tube 5, a V-shaped cone core 6 coaxial with the measuring tube 1 is arranged in the measuring tube 1, the V-shaped cone core 6 is gradually flared along the connecting line direction of the positive pressure taking tube 4 and the negative pressure taking tube 5, the V-shaped cone core 6 is of a hollow structure, a flow guide tube 7 coaxial with the measuring tube 1 is communicated in the V-shaped cone core 6, one end of the flow guide tube 7 close to the contraction part of the V-shaped cone core 6 is provided with a support tube 8 communicated with the negative pressure taking tube 5, the support tube 8 is of a right-angled elbow structure, the inner diameters, one end of the flow guide pipe 7 close to the support pipe 8 is provided with an internal thread connected with the external thread of the support pipe 8. The supporting tube 8 is in threaded connection with the flow guide tube 7, so that the coaxiality of the supporting tube 8 and the flow guide tube 7 can be ensured, and meanwhile, an operator can conveniently detach the V-shaped conical core 6 without other special tools; thereby avoiding the problem that the welded V-shaped conical core 6 is inconvenient to disassemble; simultaneously, different V-shaped cones can be selected and installed according to the flow rate in the measuring pipe 1, so that the compatibility of the V-cone flowmeter is improved, and the use cost of an enterprise is reduced.

The inside fixed mounting that the honeycomb duct 7 kept away from the one end of stay tube 8 has flow equalizing plate 9, and the equipartition has a plurality of flow equalizing holes 10 on the flow equalizing plate 9. The flow equalizing plate 9 is arranged to equalize the flow of the liquid entering the flow guide pipe 7, so that the liquid can uniformly enter the negative pressure tapping pipe 5, and the stability of the V-cone flowmeter during measurement is improved; meanwhile, due to the arrangement of the flow equalizing hole 10, the probability that waste residues in liquid enter the negative pressure tapping pipe 5 is reduced to a certain extent.

As shown in fig. 2 and 3, a support frame 11 is arranged outside the V-shaped conical core 6, the support frame 11 is mounted at one end of the V-shaped conical core 6 far away from the support tube 8, the support frame 11 comprises a support inner ring 12 in threaded connection with the outer peripheral wall of the V-shaped conical core 6, a support outer ring 13 in threaded connection with the inner wall of the measurement tube 1, a support rod 14 connecting the support inner ring 12 and the support outer ring 13, and the support rod 14 is provided with a plurality of support rods and is uniformly arranged around the axis of the support inner ring 12. Thereby can support V type awl core 6, avoid V type awl core 6 because survey the problem that the interior liquid of buret 1 flows and rock, be favorable to improving V and bore flowmeter measuring stability and life. Specifically, the cross section of the support rod 14 is airfoil-shaped, so that liquid flowing through the support rod 14 can be divided due to the arrangement of the airfoil-shaped structure, so as to reduce energy loss of the liquid impacting the support rod 14, the connection part of the outer peripheral wall of the support inner ring 12 and the outer peripheral wall of the V-shaped conical core 6 is arranged in a smooth transition manner, and one side of the support outer ring 13 away from the inner wall of the measurement pipe 1 is provided with an arc-shaped guide surface 15; therefore, the pressure loss of the liquid flowing through the support frame 11 can be reduced to a certain extent, and unnecessary energy loss is reduced.

The outer peripheral wall of the measuring tube 1 is provided with an annular thickened area 16, and the V-shaped conical core 6 is positioned in an area enclosed by the thickened area 16. The liquid that flows through survey buret 1 can be because the hindrance and the extruded effect of V type awl core 6 for the velocity of flow of liquid promotes, surveys buret 1's pressure and also can rise rapidly thereupon, through setting up thickened area 16, can improve the intensity of surveying buret 1, thereby improves V and bores the life of flowmeter.

The implementation principle of the embodiment is as follows: when the flow in the measuring tube 1 changes or the V-shaped conical core 6 in the V-shaped conical flowmeter is abraded, an operator can conveniently replace the V-shaped conical core 6, and the problem that the welded V-shaped conical core 6 is inconvenient to disassemble is solved; simultaneously, the V-shaped conical cores 6 with different installation can be selected according to the flow in the measuring pipe 1, so that the compatibility of the V-shaped conical flowmeter is improved, and the use cost of an enterprise is reduced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a novel V bores flowmeter, is including surveying buret (1), the both ends of surveying buret (1) are provided with ring flange (2) respectively, the lateral wall of surveying buret (1) is seted up two and is located survey buret (1) with through-hole (3) of one side, two through-hole (3) communicate respectively has positive pressure-tapping pipe (4) and negative pressure-tapping pipe (5), its characterized in that: survey be provided with in buret (1) rather than coaxial V type awl core (6), it has honeycomb duct (7) coaxial with surveying buret (1) to link up in V type awl core (6), honeycomb duct (7) are close to the constriction part one end of V type awl core (6) and are provided with stay tube (8) that communicate with negative pressure sampling pipe (5), stay tube (8) can be dismantled rather than honeycomb duct (7) and be connected the setting.

2. The new V-cone flow meter according to claim 1, wherein: the supporting tube (8) and the guide tube (7) are connected through threads.

3. The new V-cone flow meter according to claim 1, wherein: the inner diameters of the supporting tube (8) and the guide tube (7) are the same.

4. The new V-cone flow meter according to claim 1, wherein: the inside of honeycomb duct (7) keep away from the one end of stay tube (8) is provided with flow equalizing plate (9), the equipartition has a plurality of flow equalizing holes (10) on flow equalizing plate (9).

5. The new V-cone flow meter according to claim 1, wherein: the periphery wall of V type awl core (6) is provided with support frame (11), support frame (11) one end is connected with V type awl core (6), support frame (11) other end is connected with survey buret (1).

6. The new V-cone flow meter according to claim 5, wherein: support frame (11) including support inner circle (12) be connected with the periphery wall of V type awl core (6), with survey support outer lane (13), the connection of buret (1) inner wall connection support inner circle (12) and support bracing piece (14) of outer lane (13), bracing piece (14) are provided with a plurality ofly and evenly arrange around the axis that supports inner circle (12).

7. The new V-cone flow meter according to claim 6, wherein: support inner circle (12) and the periphery wall of V type awl core (6) and pass through threaded connection, support outer lane (13) and survey buret (1) inner wall and pass through bolted connection.

8. The new V-cone flow meter according to claim 7, wherein: the cross section of bracing piece (14) is the wing section structure, the periphery wall of support inner circle (12) sets up with the periphery wall junction smooth transition of V type awl core (6), one side that supports outer lane (13) and keep away from survey buret (1) inner wall is provided with curved spigot surface (15).

9. The novel V-cone flow meter according to any one of claims 1 to 8, characterized in that: the V-shaped conical core (6) is of a hollow structure.

10. The new V-cone flow meter according to claim 9, wherein: the periphery wall of the measuring pipe (1) is provided with an annular thickened area (16), and the V-shaped conical core (6) is located in an area surrounded by the thickened area (16).