CN205091009U - Engine is with venturi that admits air - Google Patents
Engine is with venturi that admits air Download PDFInfo
- Publication number
- CN205091009U CN205091009U CN201520342653.8U CN201520342653U CN205091009U CN 205091009 U CN205091009 U CN 205091009U CN 201520342653 U CN201520342653 U CN 201520342653U CN 205091009 U CN205091009 U CN 205091009U
- Authority
- CN
- China
- Prior art keywords
- interlude
- venturi
- venturi tube
- throat
- pressure passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model relates to the field of engine technology, a engine is with venturi that admits air is provided, engine is with venturi that admits air includes venturi body and venturi throat, and the venturi body is equipped with first getting and presses the mouth including entry cylindrical section, interlude and diffusion section on the entry cylindrical section, be equipped with the first pressure passageway of getting on the interlude, the body at venturi is installed in the laminating of venturi throat on the interlude, venturi throat is equipped with the second and gets the pressure passageway, and first getting presses passageway and second to get to press the vertical coincidence of passageway to form to press a mouthful corresponding second to get to press mouthful, realize venturi's split type design, improved venturi's commonality with first getting, and the different design sizes through venturi throat realize the precision measurement of the different flow scopes of admitting air, have reduced manufacturing cost and maintenance cost.
Description
Technical field
The utility model belongs to technical field of engines, particularly relates to a kind of engine intake Venturi tube.
Background technology
Venturi tube is a kind of device utilizing differential method to measure flowing pipe linear flow rate, substantially not affected by the layout of pipeline by Venturi measuring engine intake airflow, principle simply, be easy to realization, at present gradually accept by engine producer.
Traditional Venturi tube mainly adopts unitary design, structure as shown in Figure 1, it is primarily of inlet cylinders section 3, contraction section 15, venturi throat 2, diffuser 5 forms, wherein, pressure passage (namely pressure tappings being set respectively) is respectively equipped with in inlet cylinders section 3 and venturi throat 2, utilize the pressure reduction between differential pressure pickup measurement entrance and venturi throat, and utilize this pressure difference to calculate the flow flowing through this Venturi tube, the diameter of this throat determines scope and the accuracy of measuring flow, different displacements, the engine intake airflow scope of different series is different, therefore, the Venturi tube designing different throat diameter is needed to meet measurement demand, engine types is various, power section is different, just need the Venturi tube of the marquis's mouth diameter designing various different size, manufacturing cost certainly will be added like this.
Meanwhile, when adopting that above-mentioned traditional venturi throat is impaired causes flow measurement deviation, need the Venturi tube more renewed, increase cost.
Utility model content
The purpose of this utility model is to provide a kind of engine intake Venturi tube, the problem of the increase cost that the Venturi tube being intended to solve integrated design in prior art is brought, the Venturi tube such as designing marquis's mouth diameter of various different size adds manufacturing cost, and the Venturi tube that more renews is caused because throat is impaired, increase cost.
The utility model is achieved in that a kind of engine intake Venturi tube, and described engine intake Venturi tube comprises Venturi tube body and venturi throat, wherein:
Described Venturi tube body comprises entrance cylindrical section, interlude and diffuser, and wherein, described inlet cylinders section is provided with the first pressure tappings, and described interlude is provided with the first pressure passage;
Described venturi throat laminating is arranged on the described interlude of described Venturi tube body, described venturi throat is provided with the second pressure passage, and described first pressure passage and described second pressure passage vertically overlap and form second pressure tappings corresponding with described first pressure tappings.
As a kind of improved plan, described interlude comprises the first rank interlude and second-order interlude, wherein, described first rank interlude is near described inlet cylinders section, described second-order interlude is near described diffuser, described first pressure channel setting is on described second-order interlude, and the internal diameter size of described first rank interlude is greater than the internal diameter size of described second-order interlude.
As a kind of improved plan, described venturi throat is provided with dish portion and transition part, and wherein, described dish portion and described first rank interlude adapt, described transition part and described second-order interlude adapt, and described second pressure channel setting is on described transition part.
As a kind of improved plan, described transition part is provided with from the middle part of described transition part to the conus portion that described diffuser extends near the side of described diffuser.
As a kind of improved plan, the cone angle of described conus portion is identical with the cone angle of described diffuser.
As a kind of improved plan, the inwall that described inlet cylinders section and described interlude close on is provided with chamfering circular arc.
Because engine intake Venturi tube comprises Venturi tube body and venturi throat, Venturi tube body comprises entrance cylindrical section, interlude and diffuser, and inlet cylinders section is provided with the first pressure tappings, and interlude is provided with the first pressure passage; Venturi throat laminating is arranged on the described interlude of Venturi tube body, venturi throat is provided with the second pressure passage, first pressure passage and the second pressure passage vertically overlap and form second pressure tappings corresponding with the first pressure tappings, realize the split-type design of Venturi tube, improve the versatility of Venturi tube, realized the accurate measurement of different flow air inlet scope by the different designs size of venturi throat, reduce manufacturing cost and maintenance cost.
Because interlude comprises the first rank interlude and second-order interlude, the internal diameter size of the first rank interlude is greater than the internal diameter size of second-order interlude, to adapt to the installation of venturi throat.
Because transition part to be provided with from the middle part of transition part to the conus portion that diffuser extends near the side of diffuser, adapt to realize being set to conical diffuser with itself.
The inwall closed on due to inlet cylinders section and described interlude is provided with chamfering circular arc, to be arranged on by venturi throat in the interlude of this venturi tube body.
Accompanying drawing explanation
Fig. 1 is the structural representation of the engine intake Venturi tube that prior art provides;
The structural representation of the engine intake Venturi tube that Fig. 2 the utility model provides;
Fig. 3 is the structural representation of the Venturi tube body that the utility model provides;
Fig. 4 is the structural representation of the venturi throat that the utility model provides;
Fig. 5 is the design diagram of the chamfering circular arc that the utility model provides;
Wherein, 1-Venturi tube body, 2-venturi throat, 3-inlet cylinders section, 4-interlude, 5-diffuser, 6-first pressure tappings, 7-first pressure passage, 8-second pressure passage, 9-first rank interlude, 10-second-order interlude, 11-dish portion, 12-transition part, 13-conus portion, 14-chamfering circular arc, 15-contraction section.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 2 shows the structural representation of the engine intake Venturi tube that the utility model provides, and for convenience of explanation, only gives the part relevant to the utility model in figure.
Simultaneously shown in composition graphs 3 and Fig. 4, engine intake Venturi tube comprises Venturi tube body 1 and venturi throat 2, wherein:
Venturi tube body 1 comprises entrance cylindrical section 3, interlude 4 and diffuser 5, and wherein, inlet cylinders section 3 is provided with the first pressure tappings 6, and interlude 4 is provided with the first pressure passage 7;
Venturi throat 2 laminating is arranged on the interlude 4 of Venturi tube body 1, and venturi throat 2 is provided with the second pressure passage 8, first pressure passage 7 and the second pressure passage 8 and vertically overlaps and formed and the second pressure tappings that the first pressure tappings 6 is corresponding.
As shown in Figure 3, interlude 4 comprises the first rank interlude 9 and second-order interlude 10, wherein, first rank interlude 9 is near inlet cylinders section 3, second-order interlude 10 is near diffuser 5, first pressure passage 7 is arranged on second-order interlude 10, and the internal diameter size of the first rank interlude 9 is greater than the internal diameter size of second-order interlude 10.
As shown in Figure 4, venturi throat 2 is provided with dish portion 11 and transition part 12, and wherein, dish portion 11 and the first rank interlude 9 adapt, and transition part 12 and second-order interlude 10 adapt, and the second pressure passage 8 is arranged on transition part 12.
As shown in Figure 2 and Figure 4, transition part 12 is provided with near the side of diffuser 5 from the middle part of transition part 12 to the conus portion 13 that diffuser 5 extends;
Wherein, the cone angle of conus portion 13 is identical with the cone angle of diffuser 5, i.e. two straight line parallels at two cone angle places, and two oblique lines are also parallel, so that reach the gas diffusion angle better reaching Venturi tube, do not repeat them here.
In the utility model, the first pressure passage 7 and the second pressure passage 8 vertically overlap and form second pressure tappings corresponding with the first pressure tappings 6, are specially:
In figure 3, dish portion 11 is L1 near the distance of one end of transition part 12 and the second pressure passage 8 inner left wall;
In the diagram, the first rank interlude 9 is L2 with the distance of second-order interlude 10 point of interface distance the first pressure passage 7 inner left wall;
The design of the size of these two sections of L1 and L2 needs guarantee first pressure passage 7 vertically to overlap with the second pressure passage 8, to reach the object of formation second pressure tappings, therefore, and this condition of demand fulfillment: L1=L2.
As shown in Figure 5, Fig. 5 is the partial illustration of Fig. 2 and Fig. 3, the inwall that inlet cylinders section 3 and interlude close on is provided with chamfering circular arc 14, and namely dish portion 11 outside dimension of venturi throat 2 is less than inlet cylinders section 3 internal diameter size, so that the assembling of this venturi throat 2.
Certainly, in the utility model, be circumferentially provided with annular seal groove with cavity wall in Venturi tube body 1 to what fit at the transition part 12 of above-mentioned venturi throat 2, be provided with O-ring seal in this annular seal groove, as shown in Figure 2, do not repeat them here.
In the utility model, engine intake Venturi tube comprises Venturi tube body 1 and venturi throat 2, Venturi tube body 1 comprises entrance cylindrical section 3, interlude and diffuser 5, and inlet cylinders section 3 is provided with the first pressure tappings 6, and interlude is provided with the first pressure passage 7; Venturi throat 2 laminating is arranged on the interlude of Venturi tube body 1, venturi throat 2 is provided with the second pressure passage 8, first pressure passage 7 and the second pressure passage 8 vertically overlap and form second pressure tappings corresponding with the first pressure tappings 6, realize the split-type design of Venturi tube, improve the versatility of Venturi tube, realized the accurate measurement of different flow air inlet scope by the different designs size of venturi throat 2, reduce manufacturing cost and maintenance cost.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. an engine intake Venturi tube, is characterized in that, described engine intake Venturi tube comprises Venturi tube body (1) and venturi throat (2), wherein:
Described Venturi tube body (1) comprises entrance cylindrical section (3), interlude (4) and diffuser (5), wherein, described inlet cylinders section (3) is provided with the first pressure tappings (6), and described interlude is provided with the first pressure passage (7);
Described venturi throat (2) laminating is arranged on the described interlude (4) of described Venturi tube body (1), described venturi throat (2) is provided with the second pressure passage (8), and described first pressure passage (7) and described second pressure passage (8) vertically overlap and form second pressure tappings corresponding with described first pressure tappings (6).
2. engine intake Venturi tube according to claim 1, it is characterized in that, described interlude (4) comprises the first rank interlude (9) and second-order interlude (10), wherein, described first rank interlude (9) is near described inlet cylinders section (3), described second-order interlude (10) is near described diffuser (5), described first pressure passage (7) is arranged on described second-order interlude (10), the internal diameter size of described first rank interlude (9) is greater than the internal diameter size of described second-order interlude (10).
3. engine intake Venturi tube according to claim 2, it is characterized in that, described venturi throat (2) is provided with dish portion (11) and transition part (12), wherein, described dish portion (11) and described first rank interlude (9) adapt, described transition part (12) and described second-order interlude (10) adapt, and described second pressure passage (8) is arranged on described transition part (12).
4. engine intake Venturi tube according to claim 3, it is characterized in that, described transition part (12) is provided with the conus portion (13) extended to described diffuser (5) from described transition part (12) middle part near the side of described diffuser (5).
5. engine intake Venturi tube according to claim 4, is characterized in that, the cone angle of described conus portion (13) is identical with the cone angle of described diffuser (5).
6. the engine intake Venturi tube according to any one of claim 1 to 5, is characterized in that, the inwall that described inlet cylinders section (3) and described interlude (4) close on is provided with chamfering circular arc (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342653.8U CN205091009U (en) | 2015-05-25 | 2015-05-25 | Engine is with venturi that admits air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342653.8U CN205091009U (en) | 2015-05-25 | 2015-05-25 | Engine is with venturi that admits air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205091009U true CN205091009U (en) | 2016-03-16 |
Family
ID=55481684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520342653.8U Active CN205091009U (en) | 2015-05-25 | 2015-05-25 | Engine is with venturi that admits air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205091009U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664362A (en) * | 2020-12-11 | 2021-04-16 | 广西玉柴机器股份有限公司 | Venturi tube structural parameter beneficial to accurate measurement of engine exhaust gas flow |
| CN113531221A (en) * | 2020-04-14 | 2021-10-22 | 海默科技（集团）股份有限公司 | Composite nested pipe and processing method |
| CN114458484A (en) * | 2022-01-29 | 2022-05-10 | 东风商用车有限公司 | Engine venturi tube |
| CN115371745A (en) * | 2022-10-25 | 2022-11-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Non-intrusive engine air inlet flow tube based on contraction and expansion throat structure |
-
2015
- 2015-05-25 CN CN201520342653.8U patent/CN205091009U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531221A (en) * | 2020-04-14 | 2021-10-22 | 海默科技（集团）股份有限公司 | Composite nested pipe and processing method |
| CN112664362A (en) * | 2020-12-11 | 2021-04-16 | 广西玉柴机器股份有限公司 | Venturi tube structural parameter beneficial to accurate measurement of engine exhaust gas flow |
| CN114458484A (en) * | 2022-01-29 | 2022-05-10 | 东风商用车有限公司 | Engine venturi tube |
| CN115371745A (en) * | 2022-10-25 | 2022-11-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Non-intrusive engine air inlet flow tube based on contraction and expansion throat structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205091009U (en) | Engine is with venturi that admits air | |
| CN106482794B (en) | Venturi flowmeter of EGR engine | |
| CN201622085U (en) | Novel built-in double Venturi tube assembly | |
| ATE535690T1 (en) | EXHAUST SYSTEM | |
| CN104457863A (en) | Method and wire pipe air speed flow meter for measuring air speeds on wire feeding pipelines | |
| CN204286515U (en) | Quarter bend formula electromagnetic flow transducer | |
| CN102944271A (en) | Composite internal and external venturi tube flowmeter | |
| CN203535068U (en) | Measuring device for wind speed and wind volume based on static pressure principle | |
| CN204241043U (en) | Rectangle differential pressure flowmeter | |
| CN108444555A (en) | A kind of novel Venturi tube-type spreader flowmeter | |
| CN104101387B (en) | The adaptive flute type manage-style flowmeter of adjustable type | |
| CN214502553U (en) | Orifice flowmeter | |
| CN105387894A (en) | Bitobar flowmeter | |
| CN205716188U (en) | Pvc pipeline movable elbow | |
| CN205593570U (en) | Air flow meter | |
| CN204313893U (en) | Fiber tube wind speed flowmeter | |
| CN208331495U (en) | A kind of gas meter, flow meter connection combination apparatus | |
| CN113091838A (en) | Orifice flowmeter | |
| CN102991251A (en) | Laser generator for laser engraving machine | |
| CN209570223U (en) | A kind of Venturi meter | |
| CN206988617U (en) | Ventilation shaft connector | |
| CN205066827U (en) | Throttling arrangement with socket joint formula hole | |
| CN206177380U (en) | EGR engine differential pressure type flowmeter | |
| CN220893487U (en) | Differential pressure flowmeter draws pressure pipe heat tracing structure and differential pressure flowmeter | |
| CN205483100U (en) | Bayonet multi -aperture flow measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |