CN211204493U

CN211204493U - Venturi type steam cooler

Info

Publication number: CN211204493U
Application number: CN201922096772.0U
Authority: CN
Inventors: 林慧莹
Original assignee: Shanghai Mansong Technology Center
Current assignee: Manson fluid technology (Shanghai) Co.,Ltd.
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-07
Anticipated expiration: 2029-11-28

Abstract

The utility model discloses a Venturi type steam cooler, which comprises a steam pipeline, wherein a first Venturi tube and a second Venturi tube are arranged in the steam pipeline, an outer channel is formed between the first Venturi tube and the inner wall of the steam pipeline, the first Venturi tube comprises a steam nozzle, a throat and an inner diffuser which are connected in sequence, the throat is connected with a cooling water inlet branch pipe, a cooling water annular inner cavity and an atomizing hole are arranged in the throat, the atomizing hole is communicated with the cooling water annular inner cavity, one end of the cooling water inlet branch pipe is communicated with the cooling water annular inner cavity, and the other end of the cooling water inlet branch pipe extends out of the steam pipeline; second venturi sets up on steam conduit's inner wall, in interior diffuser extends to second venturi, the utility model discloses utilize venturi principle atomizing cooling water, reduce to the requirement of cooling water pressure, the erosion to the pipeline when simultaneously effectual cooling water droplet that prevents sprays through twice atomizing cooling, the reinforcing carries out the effect of cooling to superheated steam.

Description

Venturi type steam cooler

Technical Field

The utility model belongs to the cooler field, more specifically the design of venturi type steam cooler that says so.

Background

The existing cooler atomizes cooling water by adopting a pressure nozzle, has higher requirement on the pressure of the cooling water and has poor atomizing effect. The cooling water is sprayed at high pressure and can be sprayed to the inner wall of the steam pipeline to cause erosion.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model provides an utilize venturi principle atomizing cooling water, reduce the requirement to cooling water pressure, simultaneously effectual erosion to the pipeline when preventing the cooling water droplet and spraying, through twice atomizing cooling, the reinforcing carries out the effect of cooling to superheated steam.

In order to achieve the above purpose, the utility model provides a following technical scheme: a Venturi type steam cooler comprises a steam pipeline, wherein a first Venturi tube and a second Venturi tube are arranged in the steam pipeline, an outer channel is formed between the first Venturi tube and the inner wall of the steam pipeline, the first Venturi tube comprises a steam nozzle, a throat and an inner diffuser which are sequentially connected, the throat is connected with a cooling water inlet branch pipe, an annular inner cavity and an atomization hole are arranged in the throat, the atomization hole is communicated with the annular inner cavity, one end of the cooling water inlet branch pipe is communicated with the annular inner cavity, and the other end of the cooling water inlet branch pipe extends out of the steam pipeline; the second venturi tube is arranged on the inner wall of the steam pipeline, and the inner diffuser extends into the second venturi tube.

Further, the steam nozzle is provided with a first extension section extending towards the direction of the inner diffuser, the outer diameter of the first extension section is smaller than that of the steam nozzle, the inner diffuser extends towards the steam nozzle direction and is provided with a second extension section and a third extension section, the outer diameter of the second extension section is smaller than that of the inner diffuser, the outer diameter of the third extension section is smaller than that of the second extension section, the outer diameter of the third extension section is smaller than that of the first extension section, the end part of the third extension section is abutted on the end part of the first extension section, a threaded cylinder is arranged on the first extension section and the second extension section, the two sides of the threaded cylinder are respectively in threaded connection with the first extension section and the second extension section, an annular inner cavity is formed between the threaded cylinder and the third extension section, a cooling water inlet branch pipe is fixed on the threaded cylinder, an atomization hole is formed in the third extension section, and a support is arranged between the threaded cylinder and the steam pipeline.

Furthermore, a fourth extending section is arranged on the first extending section in an extending mode towards the inner diffuser, the outer diameter of the fourth extending section is equal to the inner diameter of the third extending section, and the third extending section is sleeved on the fourth extending section.

Further, sealing rings are arranged between the threaded cylinder and the steam nozzle, between the threaded cylinder and the inner diffuser, and between the third extending section and the first extending section.

Further both ends that steam nozzle and interior diffuser carried on the back mutually all are provided with the tool mounting groove.

Compared with the prior art, the beneficial effects of the utility model are that: cooling water is atomized by utilizing a Venturi principle, and a part of cooling water passes through the steam nozzle to generate high-speed airflow for atomizing the cooling water, so that the injection effect is generated, and the water supply pressure of the cooling water can be reduced; cooling water enters an annular inner cavity with uniformly distributed fine nozzles, so that the cooling water is pre-atomized before entering an inner diffuser; the inner diffuser utilizes the Venturi principle to balance the pressure in the cooler, and further atomizes water mist; another part superheated steam passes through outer passageway and directly reachs second venturi department, and second venturi utilizes the venturi principle to resume the cooler internal pressure, makes the steam-water mixture more even to prevent that the cooling water droplet from directly spraying to the steam conduit inner wall, reduce the erosion, improve the evaporation efficiency of cooling water, simultaneously the utility model discloses make things convenient for first venturi's installation, make venturi at steam conduit internal fixation firm.

Drawings

FIG. 1 is a cross-sectional view of the venturi-type steam cooler of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic structural view of the support member of the present invention.

Reference numerals: 1. a steam line; 11. an inlet flange; 12. an outlet flange; 13. an outer channel; 2. a first venturi tube; 21. a steam nozzle; 22. a throat; 23. an inner diffuser; 3. a second venturi tube; 4. a cooling water inlet branch pipe; 41. a first branch pipe; 42. a second branch pipe; 43. a branch pipe flange; 51. a first extension section; 52. a fourth extension segment; 53. a second extension section; 54. a third extension section; 541. an atomization orifice; 6. an annular inner cavity; 7. a threaded barrel; 8. a seal ring; 9. a support member; 91. an inner ring; 92. an outer ring; 93. and a support plate.

Detailed Description

The embodiment of the present invention will be further explained with reference to fig. 1 to 3.

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and the positional relationship are indicated based on the orientation or the positional relationship shown in the drawings, and the description is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.

A Venturi type steam cooler comprises a steam pipeline 1, wherein a first Venturi tube 2 and a second Venturi tube 3 are arranged in the steam pipeline 1, an outer channel 13 is formed between the first Venturi tube 2 and the inner wall of the steam pipeline 1, the first Venturi tube 2 comprises a steam nozzle 21, a throat 22 and an inner diffuser 23 which are sequentially connected, the throat 22 is connected with a cooling water inlet branch pipe 4, a cooling water annular inner cavity 6 and an atomization hole 541 are arranged in the throat 22, the atomization hole 541 is communicated with the cooling water annular inner cavity 6, one end of the cooling water inlet branch pipe 4 is communicated with the cooling water annular inner cavity 6, and the other end of the cooling water inlet branch pipe extends out of the steam pipeline 1; the second venturi tube 3 is disposed on an inner wall of the steam pipe 1, and the inner diffuser 23 extends into the second venturi tube 3.

In this embodiment, it is preferable that an inlet flange 11 and an outlet flange 12 are respectively disposed at two ends of the steam pipeline 1, and the inlet flange 11 and the outlet flange 12 facilitate installation of the steam pipeline 1 in the whole steam pipeline 1.

Preferably, the steam nozzle 21 is provided with a first extending section 51 extending towards the inner diffuser 23, the outer diameter of the first extending section 51 is smaller than the outer diameter of the steam nozzle 21, the inner diffuser 23 is provided with a second extending section 53 and a third extending section 54 extending towards the steam nozzle 21, the outer diameter of the second extending section 53 is smaller than the outer diameter of the inner diffuser 23, the outer diameter of the third extending section 54 is smaller than the outer diameter of the second extending section 53, the outer diameter of the third extending section 54 is smaller than the outer diameter of the first extending section 51, the end of the third extending section 54 abuts against the end of the first extending section 51, the first extending section 51 and the second extending section 53 are provided with threaded cylinders 7, two sides of the threaded cylinders 7 are respectively in threaded connection with the first extending section 51 and the second extending section 53, a cooling water annular inner cavity 6 is formed between the threaded cylinders 7 and the third extending section 54, so as to facilitate the formation of the cooling water annular inner cavity 6, the production is easier, and at the same time, the throat 22 is formed here, the cooling water inlet branch pipe 4 is fixed on the threaded cylinder 7, the atomization hole 541 is arranged on the third extension section 54, and the support 9 is arranged between the threaded cylinder 7 and the steam pipeline 1.

As shown in fig. 1, the cooling water inlet branch pipe 4 of the preferred embodiment includes two sections, namely a first branch pipe 41 and a second branch pipe 42, the first branch pipe 41 is connected with the threaded cylinder 7 and extends out of the steam pipeline 1, the sum of the length of the first branch pipe 41 and the outer diameter of the threaded cylinder 7 is smaller than the inner diameter of the steam pipeline 1, and the threaded cylinder 7 is located at the position where the outer diameter of the first venturi tube 2 is the largest.

The first Venturi tube 2 is arranged in the steam pipeline 1, an outer channel 13 is required to be reserved between the first Venturi tube 2 and the steam pipeline 1 for allowing part of steam to pass through, during installation, a threaded cylinder 7, a steam nozzle 21 and an inner diffuser 23 are fixed in a threaded mode, the end portion of a third extending section 54 is abutted against the end portion of a first extending section 51, a first branch tube 41 is fixed on the threaded cylinder 7, the first branch tube 41 can be fixed on the threaded cylinder 7 in a welded mode, a through hole is formed in the side wall of the steam pipeline 1 for the first branch tube 41 to extend out, the first Venturi tube 2 is placed into the steam pipeline 1 after assembly is completed, the first branch tube 41 extends out of the steam pipeline 1 along the through hole, then a support 9 is arranged between the threaded cylinder 7 and the inner wall of the steam pipeline 1, the support 9 enables the first Venturi tube 2 to be fixed relative to the steam pipeline 1, then a second branch tube 42 is fixed to the first branch tube 41, and the second branch tube, the first branch pipe 41 and the steam pipeline 1 are welded, sealed and fixed, the end of the second branch pipe 42 is provided with a branch pipe flange 43, the branch pipe flange 43 is used for connecting a water supply mechanism, the support member 9 in the embodiment can adopt a structure as shown in fig. 3, the structure comprises an outer ring 92 and an inner ring 91, a support plate 93 is arranged between the outer ring 92 and the inner ring 91, the purpose of supporting and fixing the first venturi tube 2 can be achieved, the smoothness of the outer channel 13 cannot be obstructed, and the support member 9 can be pre-installed and fixed on the first venturi tube 2.

In this embodiment, preferably, the first extension section 51 is provided with a fourth extension section 52 extending towards the inner diffuser 23, an outer diameter of the fourth extension section 52 is equal to an inner diameter of the third extension section 54, and the third extension section 54 is sleeved on the fourth extension section 52 to enhance strength of a connection between the third extension section 54 and the first extension section 51 and prevent the third extension section 54 from deforming.

In the preferred embodiment, the sealing rings 8 are disposed between the threaded cylinder 7 and the steam nozzle 21, between the threaded cylinder 7 and the inner diffuser 23, and between the third extension section 54 and the first extension section 51, and the sealing rings 8 increase the sealing performance of the whole annular inner cavity 6.

In the preferred embodiment, the steam nozzle 21 and the inner diffuser 23 are provided with tool mounting grooves at opposite ends, the tool mounting grooves facilitate the use of tools for screwing the steam nozzle 21, the inner diffuser 23 and the threaded cylinder 7, and the shape of the tool mounting grooves can be set according to the tools used.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A venturi type desuperheater, includes steam conduit, its characterized in that: a first Venturi tube and a second Venturi tube are arranged in the steam pipeline, an outer channel is formed between the first Venturi tube and the inner wall of the steam pipeline, the first Venturi tube comprises a steam nozzle, a throat and an inner diffuser which are sequentially connected, the throat is connected with a cooling water inlet branch pipe, an annular inner cavity and an atomizing hole are arranged in the throat, the atomizing hole is communicated with the annular inner cavity, one end of the cooling water inlet branch pipe is communicated with the annular inner cavity, and the other end of the cooling water inlet branch pipe extends out of the steam pipeline; the second venturi tube is arranged on the inner wall of the steam pipeline, and the inner diffuser extends into the second venturi tube.

2. The venturi-type desuperheater of claim 1, wherein: the steam nozzle is provided with a first extension section extending towards the direction of the inner diffuser, the outer diameter of the first extension section is smaller than that of the steam nozzle, the inner diffuser extends towards the steam nozzle direction and is provided with a second extension section and a third extension section, the outer diameter of the second extension section is smaller than that of the inner diffuser, the outer diameter of the third extension section is smaller than that of the second extension section, the outer diameter of the third extension section is smaller than that of the first extension section, the end part of the third extension section is abutted on the end part of the first extension section, a threaded cylinder is arranged on the first extension section and the second extension section, the two sides of the threaded cylinder are respectively in threaded connection with the first extension section and the second extension section, an annular inner cavity is formed between the threaded cylinder and the third extension section, a cooling water inlet branch pipe is fixed on the threaded cylinder, an atomization hole is formed in the third extension section, and a support is arranged between the threaded cylinder and the steam pipeline.

3. The venturi-type desuperheater of claim 2, wherein: the first extension section extends towards the inner diffuser and is provided with a fourth extension section, the outer diameter of the fourth extension section is equal to the inner diameter of the third extension section, and the third extension section is sleeved on the fourth extension section.

4. The venturi-type desuperheater of claim 3, wherein: and sealing rings are arranged between the threaded cylinder and the steam nozzle, between the threaded cylinder and the inner diffuser and between the third extending section and the first extending section.

5. The venturi-type desuperheater of claim 4, wherein: the steam nozzle all is provided with the tool mounting groove with the both ends that interior diffuser carried on the back mutually.