CN214535074U - Diffusion rectification flow equalization structure - Google Patents
Diffusion rectification flow equalization structure Download PDFInfo
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- CN214535074U CN214535074U CN202023232529.6U CN202023232529U CN214535074U CN 214535074 U CN214535074 U CN 214535074U CN 202023232529 U CN202023232529 U CN 202023232529U CN 214535074 U CN214535074 U CN 214535074U
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Abstract
The utility model relates to a flow equalizing structure for diffusion and rectification, which comprises a diffusion tube, wherein the front end of the diffusion tube is a medium inlet end, the rear end of the diffusion tube is provided with an inwards concave diffusion cone, and the diffusion cone is provided with a plurality of through holes I for medium circulation; a shell is arranged outside the circumference of the diffusion tube, a rectifying plate is arranged on the inner wall of the shell behind the diffusion cone, and a plurality of through holes II for medium to flow through are formed in the rectifying plate; the rear end of the wall surface of the diffusion tube is also provided with a plurality of tooth-shaped openings at intervals along the circumferential direction, and the rear part of the shell is communicated with the heating cavity; flowing media enter from the front end of the diffusion pipe, one part of the flowing media horizontally enter the shell through the through hole I on the diffusion cone, the other part of the flowing media is diffused under the conical surface flow guiding action of the diffusion cone and enters the shell through the tooth-shaped opening on the diffusion pipe, and the media entering the shell flow to the rear through the through hole I on the rectifying plate to complete the diffusion and rectification of the media, so that the flow equalization and the stability of the media are realized in a short distance, and the practicability is good.
Description
Technical Field
The utility model belongs to the technical field of electric heater technique and specifically relates to a diffusion rectification's structure of flow equalizing.
Background
The electric heater is one of important devices for testing aero-engines and parts, and has extremely high requirement on the uniformity of medium flow in the heating process; however, in general, the sectional area of the inlet pipeline of the electric heater is much smaller than that of the electric heater barrel body, and the flow channel is embodied as a sudden expansion structure under the condition, so that the phenomena of extremely high central flow velocity and extremely low peripheral flow velocity occur in the heating cavity, which causes the defects of overlarge impact load of a medium on equipment, reduced heat exchange efficiency and the like.
SUMMERY OF THE UTILITY MODEL
The applicant provides a diffusion rectification flow equalization structure with a reasonable structure aiming at the defects in the prior art, so that the flow equalization and the stability of media are realized in a short distance, the flow rate of the media flowing to the heating cavity is consistent, the heat exchange efficiency is effectively improved, and the service life of equipment is prolonged.
The utility model discloses the technical scheme who adopts as follows:
a flow equalizing structure for diffusion rectification comprises a diffusion tube, wherein the front end of the diffusion tube is a medium inlet end, the rear end of the diffusion tube is provided with an inwards concave diffusion cone, and the diffusion cone is provided with a plurality of first through holes for medium circulation; a shell is arranged outside the circumference of the diffusion tube, a rectifying plate is arranged on the inner wall of the shell behind the diffusion cone, and a plurality of through holes II for medium to flow through are formed in the rectifying plate; the rear end of the wall surface of the diffusion tube is also provided with a plurality of tooth-shaped openings at intervals along the circumferential direction, and the rear part of the shell is communicated with the heating cavity.
As a further improvement of the above technical solution:
and a supporting ring is fixedly arranged on the inner wall surface of the shell along the circumferential direction, and the shell is fixedly provided with the rectifying plate through the supporting ring.
The edge of the circumference of the rectifying plate is fastened with a supporting ring through bolts arranged at intervals, and a disc spring is also arranged between each bolt and the rectifying plate; and the bolt sequentially penetrates through the disc spring, the rectifying plate and the supporting ring and then is locked.
The middle part of the rectifying plate is convex backwards to form a conical structure.
The cone angle of the conical structure of the rectifying plate is larger than that of the diffusion cone.
The front end of the circumferential wall surface of the diffusion pipe is fixedly provided with a flange, and the shell is arranged outside the circumferential wall surface of the diffusion pipe behind the flange.
The structure of casing does: the flange comprises a front flange and a rear flange which are oppositely arranged in the middle, and the front flange and the rear flange are connected through fasteners which are arranged on the circumferential edge at intervals; the front end of the front flange is connected with a front shell, the front end head of the front shell is connected with the rear end head of the flange plate, and the rectifying plate is arranged on the inner circumferential wall of the front flange; the rear end of the rear flange is connected with a rear shell, and the rear part of the rear shell is communicated with a heating cavity.
The front end part of the front shell is tightly attached to the circumferential outer wall surface of the diffusion pipe, and the rear end part of the front shell is outwards expanded along the circumferential direction to form a horn-shaped opening, so that a space is formed between the inner wall surface of the rear end part of the front shell and the outer wall surface of the rear end part of the diffusion pipe, and the tooth-shaped opening of the diffusion pipe is positioned in the space.
The diffusion pipe has the structure that: the pipe comprises a pipe body with a cylindrical structure, wherein the edge of the front end of the pipe body is outwards folded and extended along the circumferential direction to form a flange structure; the rear end of the wall surface of the pipe body is provided with a sawtooth structure along the circumferential direction, a tooth-shaped opening is formed between adjacent teeth of the sawtooth structure, and the diffusion cone is arranged on the inner side of the sawtooth structure of the diffusion pipe.
The sum of the sectional area of the tooth-shaped opening and the sectional area of the first through hole on the diffusion cone is not less than the sectional area of the medium inlet part at the front end of the diffusion tube; the sum of the sectional areas of the second through holes on the rectifying plate is not less than the sectional area of the medium inlet position at the front end of the diffusion tube, and the sum of the sectional areas of the second through holes on the rectifying plate is not more than twice of the sectional area of the medium inlet position at the front end of the diffusion tube.
The utility model has the advantages as follows:
the utility model has the advantages of compact and reasonable structure, the operation is convenient, the medium that flows gets into from the diffusion tube front end, partly through the through-hole one on the diffusion awl horizontal backward get into the casing, another part is diffused under the conical surface water conservancy diversion effect of diffusion awl and is dispersed backward through the flute profile opening on the diffusion tube and get into the casing, the medium that gets into the casing heats the chamber backward through the through-hole two flows on the cowling panel again, accomplish the diffusion and the rectification of medium, thereby realize flow equalization and the stability of medium in shorter distance, make the medium velocity of flow that flows into the heating chamber unanimous, overcome current impact load big, the shortcoming that heat exchange efficiency is low, effective helping hand is in the promotion of heat exchange efficiency, helping hand in the promotion of equipment whole life, the practicality is good;
the utility model discloses still include following advantage:
the flowing medium is diffused by the diffusion tube and the diffusion cone, and then is rectified by the rear rectifying plate, so that the flow velocity of the medium achieves better flow field quality, and the consistency of the flow velocity of the medium entering the heating cavity is good;
the flow equalizing structure with the functions of diffusion and rectification has compact, reasonable and ingenious structure, effectively reduces the equipment cost and the overall length of the equipment while prolonging the overall service life of the equipment;
the diffuser pipe is embedded in the inner sides of the flange plate and the shell through the fasteners, the rectifying plate is fixedly installed with the supporting ring on the inner wall surface of the shell through the bolts, and the diffuser pipe and the rectifying plate can be quickly replaced through the fasteners or the bolts.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is an installation schematic diagram of the diffusion tube and the diffusion cone of the present invention.
Wherein: 1. a flange plate; 2. a front housing; 3. a diffuser tube; 4. a front flange; 5. a supporting ring; 6. a rear flange; 7. a rectifying plate; 8. a diffusion cone; 9. a rear housing; 10. a bolt; 11. a disc spring; 31. a tooth-shaped opening; 32. a flange structure; 71. a second through hole; 81. and a first through hole.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the flow equalizing structure for diffusion rectification of the present embodiment includes a diffusion tube 3, a medium inlet is disposed at a front end of the diffusion tube 3, an inward-concave diffusion cone 8 is mounted at a rear end of the diffusion tube 3, and a plurality of first through holes 81 for medium to flow through are formed in the diffusion cone 8; a shell is arranged outside the circumference of the diffusion tube 3, a rectifying plate 7 is arranged on the inner wall of the shell positioned behind the diffusion cone 8, and a plurality of through holes 71 for medium to flow through are formed in the rectifying plate 7; the rear end of the wall surface of the diffusion pipe 3 is also provided with a plurality of tooth-shaped openings 31 at intervals along the circumferential direction, and the rear part of the shell is communicated with the heating cavity.
The flowing medium is diffused by the diffusion tube 3 and the diffusion cone 8, and is rectified by the rear rectifying plate 7, so that the flow velocity of the medium reaches better flow field quality, the consistency of the flow velocity of the medium entering the heating cavity is good, and the defects of large impact load and low heat exchange efficiency in the prior art are overcome; the flow equalizing structure with the functions of diffusion and rectification is compact, reasonable and ingenious in structure, the service life of the whole equipment is prolonged, the equipment cost is effectively reduced, and the whole length of the equipment is reduced.
A supporting ring 5 is fixedly arranged on the inner wall surface of the shell along the circumferential direction, and a rectifying plate 7 is fixedly arranged on the shell through the supporting ring 5.
As shown in fig. 2, the circumferential edge of the rectifying plate 7 is fastened with the supporting ring 5 by bolts 10 arranged at intervals, and a disc spring 11 is further installed between each bolt 10 and the rectifying plate 7; bolt 10 passes dish spring 11, cowling panel 7 and supporting ring 5 back locking in proper order, and the deformation of cowling panel 7 during operation has been promoted through setting up effective buffering absorption of dish spring 11, has promoted cowling panel 7's life-span.
The middle part of the rectifying plate 7 is convex backwards to form a conical structure.
The conical angle of the conical structure of the rectifying plate 7 is larger than that of the diffusion cone 8.
The front end of the circumferential wall surface of the diffusion pipe 3 is fixedly provided with a flange plate 1, and the shell is arranged outside the circumferential wall surface of the diffusion pipe 3 behind the flange plate 1.
The structure of casing does: the flange structure comprises a front flange 4 and a rear flange 6 which are arranged in opposite directions at the middle part, wherein the front flange 4 and the rear flange 6 are connected through fasteners which are arranged on the circumferential edge at intervals; the rear end of the front flange 4 is connected with the front shell 2, the front end of the front shell 2 is connected with the rear end of the flange plate 1, and the rectifying plate 7 is arranged on the inner circumferential wall of the front flange 4; the rear end of the rear flange 6 is connected with a rear shell 9, and the rear part of the rear shell 9 is communicated with a heating cavity.
The front end of the front housing 2 is in close contact with the circumferential outer wall surface of the diffuser 3, and the rear end of the front housing 2 is flared in the circumferential direction to form a trumpet-shaped opening, so that a space is formed between the inner wall surface of the rear end of the front housing 2 and the outer wall surface of the rear end of the diffuser 3, and the tooth-shaped opening 31 of the diffuser 3 is located in the space.
As shown in fig. 3, the diffuser 3 has a structure in which: the pipe comprises a pipe body with a cylindrical structure, wherein the edge of the front end of the pipe body is outwards folded and extended along the circumferential direction to form a flange structure 32, a flange plate 1 is sleeved on the outer wall surface of the front end of the pipe body, the front end surface of the flange plate 1 is tightly attached to the rear side surface of the flange structure 32, and the flange plate 1 is fixedly connected with the flange structure 32 through a fastening piece; the rear end of the wall surface of the pipe body is arranged to be in a sawtooth structure along the circumferential direction, a tooth-shaped opening 31 is formed between adjacent teeth of the sawtooth structure, and the diffusion cone 8 is arranged on the inner side of the sawtooth structure of the diffusion pipe 3.
The diffusion tube 3 is embedded in the flange plate 1 and the inner side of the shell through a fastener, the rectifying plate 7 is fixedly installed with the supporting ring 5 on the inner wall surface of the shell through the bolt 10, and the diffusion tube 3 and the rectifying plate 7 can be quickly replaced through the fastener or the bolt 10.
The sum of the sectional area of the tooth-shaped opening 31 and the sectional area of the first through hole 81 on the diffusion cone 8 is not less than the sectional area of the medium inlet part at the front end of the diffusion pipe 3; the sum of the sectional areas of the second through holes 71 on the rectifying plate 7 is not less than the sectional area of the medium inlet part at the front end of the diffusion tube 3, and the sum of the sectional areas of the second through holes 71 on the rectifying plate 7 is not more than twice of the sectional area of the medium inlet part at the front end of the diffusion tube 3.
In this embodiment, the ratio of the cross-sectional area of the tooth-shaped opening 31 of the diffusion tube 3 to the cross-sectional area of the through hole one 81 of the diffusion cone 8 is equal to the ratio of the cross-sectional area of the heating cavity to the cross-sectional area of the medium inlet at the rear end of the diffusion tube 3.
The flow of the medium flowing into the center of the heating cavity and the flow of the medium around the center of the heating cavity are controlled by controlling the cross section of the tooth-shaped opening 31 on the diffusion pipe 3 and the cross section of the through hole I81 on the diffusion cone 8.
The setting of 3 rear end tooth type openings 31 of diffusion tube is used for the circulation of diffusion medium on the one hand, and on the other hand, in the heating process, especially the heating initial stage, when there is great temperature difference and this difference in temperature change frequent between diffusion cone 8 and diffusion tube 3, the elastic action through 3 last tooth type openings 31 of diffusion tube releases the difference in temperature stress that is caused by the difference in temperature to avoided the connection failure because of local difference in temperature stress leads to, effectively ensured the use reliability of equipment.
The utility model discloses a theory of operation does:
flowing media enter from the front end of the diffusion pipe 3, one part of the flowing media horizontally enter the shell backwards through the first through hole 81 on the diffusion cone 8, the other part of the flowing media is diffused under the conical surface flow guiding action of the diffusion cone 8 and is diffused backwards through the tooth-shaped opening 31 on the diffusion pipe 3 to enter the shell, the media entering the shell flow to the rear heating cavity through the second through hole 71 on the rectifying plate 7 to complete the diffusion and rectification of the media, so that the flow equalization and stabilization of the media are realized in a short distance, and the flow rate of the media flowing into the heating cavity is consistent.
The utility model has the advantages of simple and compact structure, rationally ingenious, realized flow equalizing and the stability of medium in the short distance, effective helping hand is in the promotion of the whole heat exchange efficiency of equipment to and the promotion of the whole life-span of equipment, the practicality is good.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (10)
1. A diffusion rectification current sharing structure is characterized in that: the medium inlet diffusion pipe comprises a diffusion pipe (3), wherein the front end of the diffusion pipe (3) is a medium inlet end, the rear end of the diffusion pipe (3) is provided with an inwards concave diffusion cone (8), and the diffusion cone (8) is provided with a plurality of first through holes (81) for medium circulation; a shell is arranged outside the circumference of the diffusion tube (3), a rectifying plate (7) is arranged on the inner wall of the shell behind the diffusion cone (8), and a plurality of through holes II (71) for medium to flow through are formed in the rectifying plate (7); the rear end of the wall surface of the diffusion pipe (3) is also provided with a plurality of tooth-shaped openings (31) at intervals along the circumferential direction, and the rear part of the shell is communicated with the heating cavity.
2. The diffusion rectified current sharing structure of claim 1, wherein: and a supporting ring (5) is fixedly arranged on the inner wall surface of the shell along the circumferential direction, and the shell is fixedly provided with a rectifying plate (7) through the supporting ring (5).
3. The diffusion rectified current sharing structure of claim 2, wherein: the edge of the circumference of the rectifying plate (7) is fastened with the supporting ring (5) through bolts (10) arranged at intervals, and a disc spring (11) is further arranged between each bolt (10) and the rectifying plate (7); and the bolt (10) sequentially penetrates through the disc spring (11), the rectifying plate (7) and the supporting ring (5) and then is locked.
4. A diffusion rectified current sharing structure as claimed in claim 1 or 2, wherein: the middle part of the rectifying plate (7) is convex backwards to form a conical structure.
5. The diffusion rectified current sharing structure of claim 4, wherein: the conical angle of the conical structure of the rectifying plate (7) is larger than that of the diffusion cone (8).
6. The diffusion rectified current sharing structure of claim 1, wherein: the front end of the circumferential wall surface of the diffusion pipe (3) is fixedly provided with a flange plate (1), and the shell is arranged outside the circumferential wall surface of the diffusion pipe (3) behind the flange plate (1).
7. The diffusion rectified current sharing structure of claim 6, wherein: the structure of casing does: the flange structure comprises a front flange (4) and a rear flange (6) which are oppositely arranged in the middle, wherein the front flange (4) and the rear flange (6) are connected through fasteners which are arranged on the circumferential edge at intervals; the front end of the front flange (4) is connected with the front shell (2), the front end head of the front shell (2) is connected with the rear end head of the flange plate (1), and the rectifying plate (7) is arranged on the inner circumferential wall of the front flange (4); the rear end of the rear flange (6) is connected with a rear shell (9), and the rear part of the rear shell (9) is communicated with a heating cavity.
8. The diffusion rectified current sharing structure of claim 7, wherein: the front end part of the front shell (2) is tightly attached to the circumferential outer wall surface of the diffusion pipe (3), the rear end part of the front shell (2) is outwards expanded along the circumferential direction to form a horn-shaped opening, so that a space is formed between the inner wall surface of the rear end part of the front shell (2) and the outer wall surface of the rear end part of the diffusion pipe (3), and the tooth-shaped opening (31) of the diffusion pipe (3) is positioned in the space.
9. The diffusion rectified current sharing structure of claim 6, wherein: the structure of the diffusion pipe (3) is as follows: the pipe comprises a pipe body with a cylindrical structure, wherein the edge of the front end of the pipe body is outwards folded and extended along the circumferential direction to form a flange structure (32), the flange plate (1) is sleeved on the outer wall surface of the front end of the pipe body, the front end surface of the flange plate (1) is tightly attached to the rear side surface of the flange structure (32), and the flange plate (1) is fixedly connected with the flange structure (32) through a fastener; the rear end of the wall surface of the pipe body is arranged to be of a sawtooth structure along the circumferential direction, a tooth-shaped opening (31) is formed between adjacent teeth of the sawtooth structure, and the diffusion cone (8) is installed on the inner side of the sawtooth structure of the diffusion pipe (3).
10. The diffusion rectified current sharing structure of claim 1, wherein: the sum of the sectional area of the tooth-shaped opening (31) and the sectional area of a first through hole (81) on the diffusion cone (8) is not less than the sectional area of the medium inlet part at the front end of the diffusion pipe (3); the sum of the sectional areas of the second through holes (71) on the rectifying plate (7) is not less than the sectional area of the entrance of the medium at the front end of the diffusion tube (3), and the sum of the sectional areas of the second through holes (71) on the rectifying plate (7) is not more than twice of the sectional area of the entrance of the medium at the front end of the diffusion tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023232529.6U CN214535074U (en) | 2020-12-28 | 2020-12-28 | Diffusion rectification flow equalization structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023232529.6U CN214535074U (en) | 2020-12-28 | 2020-12-28 | Diffusion rectification flow equalization structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214535074U true CN214535074U (en) | 2021-10-29 |
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ID=78297242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023232529.6U Active CN214535074U (en) | 2020-12-28 | 2020-12-28 | Diffusion rectification flow equalization structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214535074U (en) |
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2020
- 2020-12-28 CN CN202023232529.6U patent/CN214535074U/en active Active
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