CN202066537U - Venturi tube - Google Patents
Venturi tube Download PDFInfo
- Publication number
- CN202066537U CN202066537U CN2011201697240U CN201120169724U CN202066537U CN 202066537 U CN202066537 U CN 202066537U CN 2011201697240 U CN2011201697240 U CN 2011201697240U CN 201120169724 U CN201120169724 U CN 201120169724U CN 202066537 U CN202066537 U CN 202066537U
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- hole
- circular cone
- trunnion
- tube
- impulse
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Abstract
The utility model discloses a venturi tube, comprising a sleeve and an inner tube arranged in the sleeve, the inner tube comprises a venturi tube, a conical shrinkage tube and a conical diffusion tube, two ends of the conical shrinkage tube and the conical diffusion tube are fixed in the sleeve, a pressure conductive device is arranged on the venturi tube and comprises a pressure conductive through hole, one end of the pressure conductive through hole is communicated with the venturi tube, the other end of the pressure conductive through hole penetrates through the sleeve and extends out of the sleeve, a pressure equalizing block is sheathed outside the part of the pressure conductive through hole, between an inner tube and the sleeve, the pressure equalizing block is respectively welded with the outer wall of the inner tube and the inner wall of the sleeve in a sealing manner, a pressure conductive through hole base is sheathed at the part of the sleeve, extending out of the pressure conductive through hole, and an end cover is arranged at the opening of the pressure conductive through hole. In the utility model, the pressure equalizing block is used for replacing a pressure equalizing ring, so as to prevent the pressure conductive through hole from leaking comprehensively and improve the service life of the venturi tube; in addition, the throat part of the venturi tube is formed by bending the venturi tube, the fixed connecting positions of the venturi tube, the conical shrinkage tube and the conical diffusion tube are different from the throat part, so as to avoid damage of the sharp shape of the throat part and ensure the metering accuracy.
Description
Technical field
The utility model relates to the fluid measurement field, is specifically related to a kind of Venturi tube.
Background technology
Thereby Venturi tube is a kind of speed of utilizing special pipe to make to flow through this pipe fluid to change and produces the flow detecting element of differential pressure.Axial cross section is made up of inlet constriction, cylindrical shape throat and conical diffuser.Wherein, the socket joint type Venturi tube generally comprises pipe in Venturi tube sleeve pipe and the Venturi tube, the fixedly installing of the two ends of interior pipe and sleeve pipe, and interior pipe comprises collapsible tube, trunnion and anemostat, the trunnion place is provided with pressure-inducting device.
Shown in Fig. 6～11, the pressure-inducting device of prior art generally comprises the impulse through hole, the impulse through hole runs through sleeve pipe, and be communicated with interior pipe, the impulse through hole stretches out sleeve portion and is provided with impulse seat and end cap, be arranged with grading ring outside the part of impulse through hole between interior pipe and sleeve pipe, grading ring is positioned at impulse through hole and pipe cooperation place, the impulse through hole outside is provided with screw thread, grading ring is provided with respective threads, the impulse through hole is fixedlyed connected in the mode of threaded engagement with grading ring, and the exterior bottom of grading ring and the welding of interior pipe are provided with.The impulse through hole of this Venturi tube and the inwall of sleeve pipe do not carry out any setting, the impulse through hole adopts the mode of screw thread to fixedly connected with the impulse ring, can cause the breakage herein of impulse through hole after long-term the use, cause leakage, particularly when Venturi tube is applied to the nuclear power field, require long service life.
In addition, the collapsible tube of the Venturi tube of prior art and anemostat and trunnion are generally directly fixedlyed connected and are arranged on the fixed connection place and form throat, throat and fixed connection place are positioned at same position, cause throat's distortion easily, bending part sharp-pointed that can not keep throat like this, the accuracy of influence metering.
Summary of the invention
The purpose of this utility model is: at the deficiencies in the prior art, the utility model provides the Venturi tube of a kind of long service life, accurate measurement, good sealing effect.
In order to realize above-mentioned purpose, the utility model has adopted technical scheme:
A kind of Venturi tube, comprise sleeve pipe and the interior pipe that is arranged on inside pipe casing, circular cone collapsible tube and circular cone anemostat that interior pipe comprises trunnion and is arranged on the trunnion two ends, the two ends of circular cone collapsible tube and circular cone anemostat are fixed in the sleeve pipe, described trunnion is provided with pressure-inducting device, pressure-inducting device comprises the impulse through hole, impulse through hole one end is communicated with trunnion, the other end runs through sleeve pipe and stretches out sleeve pipe, be provided with some pressure ports with the corresponding position of pressure-inducting device, be arranged with equal briquetting outside the part of described impulse through hole between interior pipe and sleeve pipe, all the two ends of briquetting are provided with outer wall of inner tube and internal surface of sleeve pipe welded seal respectively, described impulse through hole stretches out sleeve portion and is arranged with the impulse through hole socket outward, and impulse through hole socket and sleeve pipe welded seal are provided with, and the mouth of pipe that described impulse through hole stretches out sleeve portion is provided with end cap.
As preferably, the socket place welded seal of described equal briquetting and impulse through hole is provided with.After adopting above-mentioned preferred version, avoid the leakage of fluid, improved the serviceable life of the utility model Venturi tube.
As preferably, the porch pipeline of described trunnion and the pipeline in exit outwards bend, form the bending pipeline, the bending place at pipeline place, trunnion porch is the throat of trunnion, fixedlys connected with the circular cone anemostat with the circular cone collapsible tube respectively and be equipped with in the outer end of the bending pipeline of trunnion.After adopting above-mentioned preferred version, the bearing position and the throat of circular cone collapsible tube and circular cone anemostat and trunnion are not in same place, the three installs and fixes Shi Buhui and causes throat distortion like this, guaranteed the sharp-pointed of throat, guarantee the flow of fluid, improved the accuracy of the utility model Venturi tube metering.
As preferably, fixedly connected in the mode of welding with circular cone collapsible tube and circular cone anemostat respectively and be equipped with in the outer end of described bending pipeline, trunnion porch bending pipeline degree of tilt cooperate with the degree of tilt of circular cone collapsible tube, the trunnion exit bends the degree of tilt of pipeline and the degree of tilt of circular cone anemostat is equipped with.After adopting above-mentioned preferred version, the degree of tilt of the bending pipeline at trunnion two ends cooperates with the degree of tilt of circular cone collapsible tube and circular cone anemostat respectively, has improved the accuracy of metering.
As preferably, described trunnion and circular cone collapsible tube are fixedlyed connected the place of being equipped with and are provided with boss with the circular cone anemostat.After adopting above-mentioned preferred version, internally the throat and the weld of pipe are strengthened fixing, and pipe has improved serviceable life from two fractures in preventing.
As preferably, described sleeve pipe is provided with blow-off pipe.After adopting above-mentioned preferred version, convenient with obsolete fluid discharge.
Use equal briquetting outside the part of impulse through hole between interior pipe and sleeve pipe of Venturi tube of the present utility model; can comprehensively protect the impulse through hole not leak; improved the serviceable life of Venturi tube; simultaneously; the throat of Venturi tube of the present utility model is bent to form by trunnion, and the fixed connection place and the throat of trunnion and circular cone collapsible tube and circular cone anemostat are positioned at diverse location, destroys the shape of throat when having avoided fixed installation; guarantee the sharp-pointed of throat, guaranteed the accuracy of metering.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment Venturi tube;
Fig. 2 is the cross-sectional view at A-A place among Fig. 1;
Fig. 3 is the cross-sectional view at B-B place among Fig. 1;
Fig. 4 is the partial enlarged drawing at A place among Fig. 1;
Fig. 5 is the partial enlarged drawing at B place among Fig. 1;
Fig. 6 is the structural representation of the utility model background technology Venturi tube;
Fig. 7 is the cross-sectional view at C-C place among Fig. 6;
Fig. 8 is the cross-sectional view at I-I place among Fig. 6;
Fig. 9 is the partial enlarged drawing at C place among Fig. 6;
Figure 10 is the partial enlarged drawing at I place among Fig. 6;
Figure 11 is the partial enlarged drawing at D place among Fig. 9.
Embodiment
Shown in Fig. 1～5, embodiment of the present utility model specifically is a kind of Venturi tube, comprises sleeve pipe 1 and the interior pipe 2 that is arranged on sleeve pipe 1 inside.Wherein, sleeve pipe 1 comprises upstream straight tube 11, central tube 12 and downstream straight tube 13.Interior pipe 2 circular cone collapsible tube 21 and the circular cone anemostats 23 that comprise trunnion 22 and be arranged on trunnion 22 two ends, the maximum outside diameter of circular cone collapsible tube 21 and circular cone anemostat 23 is identical with the minimum diameter of sleeve pipe 1, and the two ends of circular cone collapsible tube 21 and circular cone anemostat 23 are fixed in the sleeve pipe 1.Trunnion 22 is provided with 3 pressure-inducting devices 3.Pressure-inducting device 3 comprises impulse through hole 31, impulse through hole 31 1 ends are communicated with trunnion 22, the other end runs through sleeve pipe 1 and stretches out sleeve pipe 1, be provided with four pressure ports with pressure-inducting device 3 corresponding positions, be arranged with equal briquetting 32 outside the part of impulse through hole 31 between interior pipe 2 and sleeve pipe 1, all the two ends of the lateral wall of briquetting 32 respectively with interior pipe 2 outer walls and sleeve pipe 1 inwall welded seal, the all upper end and 31 welded seal settings of impulse through hole of briquetting 32 inwalls, promptly all the upper end welded seal of the socket place of briquetting 32 and impulse through hole 31 is provided with.Impulse through hole 31 stretches out sleeve pipe 1 part and is arranged with impulse through hole socket 33 outward, the bottom of impulse through hole socket 33 lateral walls and sleeve pipe 1 welded seal setting, and the mouth of pipe that impulse through hole 31 stretches out sleeve pipe 1 part is provided with end cap 34.
As shown in Figure 5, the porch pipeline of trunnion 22 and the pipeline in exit outwards bend, form bending pipeline 221, the bending place at pipeline place, trunnion 22 porch is the throat 222 of trunnion 22, fixedlys connected with circular cone anemostat 23 with circular cone collapsible tube 21 respectively and be equipped with in the outer end of the bending pipeline 221 of trunnion 22.Fixedly connected in the mode of welding with circular cone collapsible tube 21 and circular cone anemostat 23 respectively and be equipped with in the outer end of bending pipeline 221, weld 223 is positioned at different positions with throat 222, trunnion 22 porch bendings pipeline 221 degree of tilt identical with the degree of tilt of circular cone collapsible tube 21, the degree of tilt that the trunnion exit bends pipeline 221 is identical with the degree of tilt of circular cone anemostat 22.
As shown in Figure 1, the trunnion 22 of the interior pipe 2 of the utility model Venturi tube and circular cone collapsible tube 21 are fixedlyed connected the place of being equipped with and are provided with boss 5 with circular cone anemostat 23.Boss 5 is arranged on the outer wall of pipe 2 in the Venturi tube, to avoid influencing flow.Sleeve pipe 1 is provided with blow-off pipe 6.Upstream straight tube 11 places of sleeve pipe 1 are provided with 3 inlet pressure-inducting devices 4, can the fluid that has just entered initially be measured.This inlet pressure-inducting device 4 comprises impulse through hole mouth 42, and impulse through hole mouth 42 inside are provided with pipeline 421, and the bottom of impulse through hole mouth 42 is provided with grading ring 41, and the bottom in grading ring 41 outsides and the welding of sleeve pipe 1 outer wall are provided with.The impulse through hole mouth 42 outer gland bonnets 43 that are provided with.
Venturi tube of the present utility model is mainly used in the nuclear power field, the principle of work of Venturi tube of the present utility model is basic identical with the Venturi tube of prior art, difference is: Venturi tube of the present utility model is adorned 3 to impulse and has been done improvement, replaced the grading ring of the use of prior art with equal briquetting 32 at this place, make impulse through hole 31 and the outer wall of interior pipe 2 and the inside and outside wall of sleeve pipe 1 all form the setting that is sealed and matched, avoid the leakage of fluid, improved the serviceable life of Venturi tube.In addition, the throat of the utility model trunnion is a bending forming, the welding of trunnion and circular cone collapsible tube and circular cone anemostat simultaneously is in throat 222 and is positioned at diverse location, destroy the sharp shape of throat 222 when avoiding trunnion 22, thereby guaranteed the accuracy of metering with circular cone collapsible tube 21 and 23 welding of circular cone anemostat.
Claims (6)
1. Venturi tube, comprise sleeve pipe and the interior pipe that is arranged on inside pipe casing, circular cone collapsible tube and circular cone anemostat that interior pipe comprises trunnion and is arranged on the trunnion two ends, the two ends of circular cone collapsible tube and circular cone anemostat are fixed in the sleeve pipe, described trunnion is provided with pressure-inducting device, pressure-inducting device comprises the impulse through hole, impulse through hole one end is communicated with trunnion, the other end runs through sleeve pipe and stretches out sleeve pipe, be provided with some pressure ports with the corresponding position of pressure-inducting device, it is characterized in that: be arranged with equal briquetting outside the part of described impulse through hole between interior pipe and sleeve pipe, all the two ends of briquetting are provided with outer wall of inner tube and internal surface of sleeve pipe welded seal respectively, described impulse through hole stretches out sleeve portion and is arranged with the impulse through hole socket outward, impulse through hole socket and sleeve pipe welded seal are provided with, and the mouth of pipe that described impulse through hole stretches out sleeve portion is provided with end cap.
2. Venturi tube according to claim 1 is characterized in that: the socket place welded seal of described equal briquetting and impulse through hole is provided with.
3. Venturi tube according to claim 1, it is characterized in that: the porch pipeline of described trunnion and the pipeline in exit outwards bend, form the bending pipeline, the bending place at pipeline place, trunnion porch is the throat of trunnion, fixedlys connected with the circular cone anemostat with the circular cone collapsible tube respectively and be equipped with in the outer end of the bending pipeline of trunnion.
4. Venturi tube according to claim 3, it is characterized in that: fixedly connected in the mode of welding with circular cone collapsible tube and circular cone anemostat respectively and be equipped with in the outer end of described bending pipeline, trunnion porch bending pipeline degree of tilt cooperate with the degree of tilt of circular cone collapsible tube, the trunnion exit bends the degree of tilt of pipeline and the degree of tilt of circular cone anemostat is equipped with.
5. according to claim 3 or 4 described Venturi tubes, it is characterized in that: described trunnion and circular cone collapsible tube are fixedlyed connected the place of being equipped with and are provided with boss with the circular cone anemostat.
6. Venturi tube according to claim 1 is characterized in that: described sleeve pipe is provided with blow-off pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201697240U CN202066537U (en) | 2011-05-25 | 2011-05-25 | Venturi tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201697240U CN202066537U (en) | 2011-05-25 | 2011-05-25 | Venturi tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066537U true CN202066537U (en) | 2011-12-07 |
Family
ID=45060398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201697240U Expired - Fee Related CN202066537U (en) | 2011-05-25 | 2011-05-25 | Venturi tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066537U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570974A (en) * | 2017-10-16 | 2018-01-12 | 中国核动力研究设计院 | A kind of rectangular flow guidance tape impulse welding procedure |
| CN111633974A (en) * | 2020-06-05 | 2020-09-08 | 中国海洋石油集团有限公司 | Processing method of composite nested pipe |
-
2011
- 2011-05-25 CN CN2011201697240U patent/CN202066537U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107570974A (en) * | 2017-10-16 | 2018-01-12 | 中国核动力研究设计院 | A kind of rectangular flow guidance tape impulse welding procedure |
| CN107570974B (en) * | 2017-10-16 | 2019-03-19 | 中国核动力研究设计院 | A kind of rectangular flow guidance tape impulse welding procedure |
| CN111633974A (en) * | 2020-06-05 | 2020-09-08 | 中国海洋石油集团有限公司 | Processing method of composite nested pipe |
| CN111633974B (en) * | 2020-06-05 | 2022-05-03 | 中国海洋石油集团有限公司 | Processing method of composite nested pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20150525 |
|
| EXPY | Termination of patent right or utility model |