CN213274385U - Built-in double-venturi tube - Google Patents
Built-in double-venturi tube Download PDFInfo
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- CN213274385U CN213274385U CN202022392126.1U CN202022392126U CN213274385U CN 213274385 U CN213274385 U CN 213274385U CN 202022392126 U CN202022392126 U CN 202022392126U CN 213274385 U CN213274385 U CN 213274385U
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Abstract
The utility model belongs to the technical field of air flow monitoring devices and specifically relates to a two venturi tubes of built-in are related to, it includes outer venturi tube, fixed connection in outer venturi tube interior venturi tube, wears to locate in venturi tube and outer venturi tube on and communicate in the pipe of getting of inner venturi tube inner wall, outer venturi tube outer wall evenly is provided with at least three first telescopic link around its circumference, first telescopic link including connect in outer venturi tube's stay tube, slip peg graft in bracing piece, coaxial rotation in the stay tube connect in the stay tube is kept away from the drive ring of outer venturi tube's one end, the drive ring with be provided with the axial locating part between the stay tube, be provided with circumference locating part between bracing piece and the stay tube inner wall, bracing piece threaded connection in the drive ring inner wall. This application has the effect that promotes two venturi suitability.
Description
Technical Field
The application relates to the field of air flow monitoring devices, in particular to a built-in double-venturi tube.
Background
The double-venturi tube flowmeter is one of the commonly used air flow meters, and comprises a plug-in double-venturi tube flowmeter and an internal double venturi tube flowmeter, wherein the double venturi tubes in the existing internal double venturi tube flowmeter are fixed in a measuring tube by a pressure-taking conduit, and the double venturi tubes of the internal double venturi tube flowmeter with the structure have poor stability, and are easy to loosen and unstable under the washing of fluid.
In order to solve the problems, chinese patent application No. CN201720733976.9 discloses a concealed double venturi flowmeter, which comprises a measuring tube, an outer venturi tube, an inner venturi tube, a pressure-taking conduit, a first inner support column and a first outer support column, wherein two ends of the measuring tube are respectively provided with a connecting flange, the outer venturi tube is sleeved outside the inner venturi tube, two ends of the first inner support column are respectively connected with the outer surface of the inner venturi tube and the inner surface of the outer venturi tube, two ends of the first outer support column are respectively connected with the outer surface of the outer venturi tube and the inner surface of the measuring tube, the pressure-taking conduit penetrates through the measuring tube, the inner venturi tube and the outer venturi tube, one end of the pressure-taking conduit, which extends out of the measuring tube, is provided with a leading nozzle, and the first inner support column and the first outer support column are located at one end.
In view of the above-mentioned related technologies, the inventor believes that, because the first outer support column is fixedly connected to the outer venturi tube, when the measuring tube with different tube diameters is installed, the first outer support column with different lengths needs to be replaced, and the applicability is low.
SUMMERY OF THE UTILITY MODEL
In order to promote the suitability of two venturi, this application provides a built-in two venturi.
The application provides a two venturi pipes of built-in adopts following technical scheme:
the utility model provides a two venturi pipes of built-in, includes outer venturi pipe, fixed connection in outer venturi pipe in venturi pipe, wears to locate in venturi pipe and outer venturi pipe on and communicate in the interior venturi pipe inner wall's pressure pipe that fetches pressure, outer venturi pipe outer wall evenly is provided with at least three first telescopic link around its circumference, first telescopic link including connect in outer venturi pipe's stay tube, slide peg graft in bracing piece, the coaxial rotation in the stay tube connect in the stay tube is kept away from the stay tube the drive ring of outer venturi pipe's one end, the drive ring with be provided with the axial locating part between the stay tube, be provided with the circumference locating part between bracing piece and the support pipe inner wall, bracing piece threaded connection in the drive ring inner wall.
Through adopting above-mentioned technical scheme, under the cooperation of two venturi tubes and first telescopic link, when needs are to two venturi tubes of survey buret installation of different pipe diameters, the user is through rotating the drive ring, make threaded connection in the intra-annular bracing piece of drive, under the effect of circumference locating part, and take place relative rotation between the drive ring, thereby make the bracing piece along drive ring axial displacement, further make the bracing piece keep away from outer venturi tube's one end butt on the inner wall of surveying buret, and through adjusting at least three first telescopic link in proper order, make two venturi tubes can be in stable state in the measuring tube of different pipe diameters, increase two venturi tube's suitability, and the convenience is dismantled two venturi tubes.
Preferably, the axial locating part comprises a limiting ring groove arranged on the inner wall of the driving ring, and a connecting ring fixedly connected to the outer wall of the supporting pipe and rotatably connected to the limiting ring groove.
By adopting the technical scheme, under the matching of the limiting ring groove and the connecting ring, the axial relative position between the driving ring and the supporting pipe is limited, the driving ring can rotate circumferentially relative to the supporting ring, and the stability between the driving ring and the supporting pipe is improved.
Preferably, the circumferential limiting part comprises a limiting groove arranged on the outer wall of the supporting rod and extending along the length direction of the supporting rod, and a limiting block fixedly connected to the outer wall of the supporting pipe and slidably connected to the limiting groove.
Through adopting above-mentioned technical scheme, under the cooperation of spacing groove and stopper to prescribe a limit to the circumferential direction position between bracing piece and the stay tube, and make the bracing piece carry out the ascending removal of driving ring axial relatively to the stay tube, thereby make the drive ring when rotating, circumferential direction does not take place for the relative drive ring of bracing piece, makes bracing piece removal efficiency higher.
Preferably, outer venturi outer wall evenly is provided with at least three second telescopic link around its circumference, first telescopic link and second telescopic link are the interval setting in outer venturi axial.
Through adopting above-mentioned technical scheme, add and be the second telescopic link that the interval set up with first telescopic link in outer venturi tube axial to support two venturi tube's both ends, thereby increase two venturi reason light and installing the stability after in measuring the pipe.
Preferably, the first telescopic rod and the second telescopic rod are both hinged to the outer wall of the outer venturi tube, and a fixing mechanism for limiting the rotation angle of the first telescopic rod and the rotation angle of the second telescopic rod is arranged between the first telescopic rod and the second telescopic rod.
Through adopting above-mentioned technical scheme, all articulate first telescopic link and second telescopic link in outer venturi tube outer wall, when installing two venturi tubes, the user is earlier through adjusting the length of first telescopic link and second telescopic link, rethread operation fixed establishment, in order to prescribe a limit to the turned angle of first telescopic link and second telescopic link, make first telescopic link and second telescopic link homoenergetic support in surveying comparatively suitable position of intraductal wall, thereby be suitable for the survey buret of various different cross sectional shapes and different pipe diameters, and when need not use first telescopic link and second telescopic link, can rotate first telescopic link and second telescopic link and contract, thereby reduce accommodation space, promote space utilization.
Preferably, the fixing mechanism comprises a first connecting rod hinged to the first telescopic rod, a second connecting rod hinged to the second telescopic rod, and an adjusting pipe sleeved outside the first connecting rod and the second connecting rod, two sections of internal thread sections with opposite rotation directions are respectively arranged on the inner walls of the adjusting pipe close to the two ends, and the first connecting rod and the second connecting rod are respectively in threaded connection with the two sections of internal thread sections.
Through adopting above-mentioned technical scheme, under the cooperation of head rod, second connecting rod and control tube, when the turned angle between head rod and the second telescopic link is adjusted to needs, through rotating the control tube, make respectively threaded connection in revolve to the opposite both ends internal thread section on head rod and the second connecting rod orientation in opposite directions or the direction motion of carrying on the back mutually, and through the turned angle of threaded auto-lock nature injectd head rod and second connecting rod, the person of facilitating the use operates.
Preferably, the outer wall of the driving ring is provided with friction lines.
Through adopting above-mentioned technical scheme, through setting up friction line at the drive ring outer wall to the user rotates the drive ring.
Preferably, the supporting rod is far away from one end of the outer Venturi tube is provided with a cushion block, and the cushion block is made of rubber materials.
By adopting the technical scheme, the end part of the supporting rod is additionally provided with the cushion block, when the supporting rod extends and abuts against the inner wall of the measuring pipe, the abutting between the end part of the supporting rod and the inner wall of the measuring pipe is tighter, and the friction force between the end part of the supporting rod and the inner wall of the measuring pipe is increased, so that the stability of the double venturi tubes in the measuring pipe is further increased.
In summary, the present application includes at least one of the following beneficial technical effects:
1. under the matching of the double venturi tubes and the first telescopic rods, the double venturi tubes can be in a stable state in the measuring tubes with different tube diameters by sequentially adjusting at least three first telescopic rods, so that the applicability of the double venturi tubes is increased, and the double venturi tubes are convenient to disassemble;
2. the first telescopic rod and the second telescopic rod are hinged to the outer wall of the outer Venturi tube, so that the stability of the double Venturi tubes is improved, and the applicability of the double Venturi tubes is also improved;
3. the end part of the supporting rod is additionally provided with the cushion block, when the supporting rod extends and abuts against the inner wall of the measuring pipe, the end part of the supporting rod is abutted more tightly with the inner wall of the measuring pipe, and the friction force between the end part of the supporting rod and the inner wall of the measuring pipe is increased, so that the stability of the double venturi tubes in the measuring pipe is further increased.
Drawings
Fig. 1 is a schematic view of the overall structure of the present embodiment.
Fig. 2 is a partial sectional view of the present embodiment.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals: 1. an outer venturi tube; 2. an inner venturi tube; 3. a pressure tapping conduit; 4. a first telescopic rod; 5. a second telescopic rod; 6. a fixing mechanism; 7. fixing the rod; 8. supporting a tube; 9. a support bar; 10. a drive ring; 11. an axial stop; 12. a circumferential limit piece; 13. a limiting ring groove; 14. a connecting ring; 15. a limiting groove; 16. a limiting block; 17. a first connecting rod; 18. a second connecting rod; 19. an adjusting tube; 20. cushion blocks; 21. measuring the tube.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses two venturi pipes of built-in. Referring to fig. 1 and 2, a two venturi of built-in, including outer venturi 1, interior venturi 2, get and press pipe 3, first telescopic link 4, the second telescopic link 5, fixed establishment 6, wherein, outer venturi 1 is located need by survey buret 21 inside of anemometry flow, interior venturi 2 is located outer venturi 1 inside, and with be coaxial setting between the outer venturi 1, through a plurality of dead lever 7 fixed connection between interior venturi 2 and the outer venturi 1, get and press pipe 3 along two venturi radial wear to locate on interior venturi 2 and outer venturi 1, and get and press pipe 3 one end and communicate in interior venturi 2 inner wall, first telescopic link 4, second telescopic link 5 and fixed establishment 6 all are provided with three groups at outer venturi 1 outer wall.
Three first telescopic links of group 4 evenly set up around outer venturi 1 circumference, three second telescopic links of group 5 evenly set up around outer venturi 1 circumference, and first telescopic link 4 and second telescopic link 5 are the interval setting in outer venturi 1 axial, and be the one-to-one setting in outer venturi 1 axial between first telescopic link 4 and the second telescopic link 5, three fixed establishment 6 of group set up respectively between three corresponding first telescopic links 4 of group and second telescopic link 5.
Referring to fig. 2 and 3, the first telescopic rod 4 includes a support tube 8 connected to the outer venturi tube 1, a support rod 9 inserted in the support tube 8 in a sliding manner, a drive ring 10 coaxially rotatably connected to one end of the support tube 8 far from the outer venturi tube 1, an outer wall of the drive ring 10 is provided with friction lines, one end of the support rod 9 far from the outer venturi tube 1 is provided with a hemispherical cushion block 20, the cushion block 20 is made of rubber, the drive ring 10 is sleeved on the support tube 8, one end of the drive ring extends out of an end of the support tube 8, an axial limiting part 11 is arranged between the drive ring 10 and the support tube 8, one end of the drive ring 10 extends out of the support tube 8, an inner wall of a part of the drive ring 10 extending out of the support tube 8 extends towards the inside.
The axial limiting member 11 includes a limiting ring groove 13 opened on the inner wall of the driving ring 10, and a connecting ring 14 fixedly connected to the outer wall of the support pipe 8 and rotatably connected in the limiting ring groove 13, so as to limit the axial relative position between the driving ring 10 and the support pipe 8 and enable the driving ring 10 to rotate circumferentially relative to the support ring.
The circumferential limiting member 12 includes a limiting groove 15 provided on the outer wall of the support rod 9 and extending along the length direction thereof, and a limiting block 16 fixedly connected to the outer wall of the support tube 8 and slidably connected in the limiting groove 15, so as to limit the circumferential rotation position between the support rod 9 and the support tube 8, and enable the support rod 9 to move in the axial direction of the drive ring 10 relative to the support tube 8.
Since the second telescopic rod 5 has the same structure as the first telescopic rod 4, and will not be described herein again, the supporting tube 8 in the first telescopic rod 4 and the supporting tube 8 in the second telescopic rod 5 are both hinged on the outer wall of the outer venturi tube 1, and the hinge axes between the first telescopic rod 4 and the second telescopic rod 5 and the outer Venturi tube 1 are all perpendicular to the axis of the outer Venturi tube 1, and are fixedly used for adjusting and limiting the rotating positions of the first telescopic rod 4 and the second telescopic rod 5, the fixing mechanism 6 comprises a first connecting rod 17 hinged to the support tube 8 in the first telescopic rod 4, a second connecting rod 18 hinged to the support tube 8 in the second telescopic rod 5, and an adjusting tube 19 sleeved outside the first connecting rod 17 and the second connecting rod 18, the inner walls of the adjusting pipe 19 close to the two ends are respectively provided with two sections of internal thread sections with opposite turning directions, the first connecting rod 17 and the second connecting rod 18 are respectively in threaded connection with the two internal thread sections.
The implementation principle of the built-in double-venturi tube in the embodiment of the application is as follows:
when it is necessary to install double venturi tubes for measuring tubes 21 of different tube diameters, the user rotates the drive ring 10 on the first telescopic rod 4 and the drive ring 10 on the second telescopic rod 5, respectively, to make the screw thread connected to the support rod 9 inside the drive ring 10, under the action of the circumferential limiting piece 12, the supporting rod 9 and the driving ring 10 rotate relatively, so that the supporting rod 9 moves axially along the driving ring 10, the end of the supporting rod 9, which is far away from the outer Venturi tube 1, is close to the inner wall of the measuring tube 21, at the moment, the first connecting rod 17 hinged on the first telescopic rod 4 and the second connecting rod 18 hinged on the second telescopic rod 5 move back to back under the action of the threads of the adjusting tube 19 by rotating the adjusting tube 19, so as to drive the end part of the first telescopic rod 4 and the end part of the second telescopic rod 5 to be gradually pressed against the inner wall of the measuring pipe 21, thereby enabling the double venturi tubes to be in a stable state within the measuring tubes 21 of different tube diameters.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a two venturi of built-in, includes outer venturi (1), inner venturi (2) of fixed connection in outer venturi (1), wears to locate on inner venturi (2) and outer venturi (1) and communicates in the pressure pipe (3) of getting of inner venturi (2) inner wall, its characterized in that: outer venturi (1) outer wall evenly is provided with at least three first telescopic link (4) around its circumference, first telescopic link (4) including connect in the stay tube (8) of outer venturi (1), slide peg graft in bracing piece (9), coaxial rotation in stay tube (8) connect in stay tube (8) are kept away from the drive ring (10) of the one end of outer venturi (1), drive ring (10) with be provided with axial locating part (11) between stay tube (8), be provided with circumference locating part (12) between bracing piece (9) and stay tube (8) inner wall, bracing piece (9) threaded connection in drive ring (10) inner wall.
2. The concealed double venturi according to claim 1, wherein: the axial limiting part (11) comprises a limiting ring groove (13) arranged on the inner wall of the driving ring (10), and a connecting ring (14) fixedly connected to the outer wall of the supporting tube (8) and rotatably connected to the inner wall of the limiting ring groove (13).
3. The concealed double venturi according to claim 1, wherein: the circumference locating part (12) comprises a limiting groove (15) which is arranged on the outer wall of the supporting rod (9) and extends along the length direction of the supporting rod, and a limiting block (16) which is fixedly connected with the outer wall of the supporting pipe (8) and is connected with the limiting groove (15) in a sliding manner.
4. The concealed double venturi according to claim 1, wherein: outer venturi (1) outer wall evenly is provided with at least three second telescopic link (5) around its circumference, first telescopic link (4) and second telescopic link (5) are the interval setting in outer venturi (1) axial direction.
5. The concealed double venturi according to claim 4, wherein: the first telescopic rod (4) and the second telescopic rod (5) are hinged to the outer wall of the outer Venturi tube (1), and a fixing mechanism (6) for limiting the rotation angle of the first telescopic rod (4) and the second telescopic rod (5) is arranged between the first telescopic rod (4) and the second telescopic rod (5).
6. The concealed double venturi according to claim 5, wherein: the fixing mechanism (6) comprises a first connecting rod (17) hinged to the first telescopic rod (4), a second connecting rod (18) hinged to the second telescopic rod (5) and an adjusting pipe (19) sleeved on the outer sides of the first connecting rod (17) and the second connecting rod (18), two sections of internal thread sections with opposite rotation directions are respectively arranged on the inner walls of the adjusting pipe (19) close to the two ends, and the first connecting rod (17) and the second connecting rod (18) are respectively in threaded connection with the two sections of internal thread sections.
7. The concealed double venturi according to claim 1, wherein: the outer wall of the driving ring (10) is provided with friction grains.
8. The concealed double venturi according to claim 1, wherein: the supporting rod (9) is far away from one end of the outer Venturi tube (1) is provided with a cushion block (20), and the cushion block (20) is made of rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022392126.1U CN213274385U (en) | 2020-10-23 | 2020-10-23 | Built-in double-venturi tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022392126.1U CN213274385U (en) | 2020-10-23 | 2020-10-23 | Built-in double-venturi tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213274385U true CN213274385U (en) | 2021-05-25 |
Family
ID=75950774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022392126.1U Active CN213274385U (en) | 2020-10-23 | 2020-10-23 | Built-in double-venturi tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213274385U (en) |
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2020
- 2020-10-23 CN CN202022392126.1U patent/CN213274385U/en active Active
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