Multi-stage cage type steam injection device

Abstract

The utility model discloses a multi-stage cage type steam jet device which comprises an inner steam pipe (1), a pressure reducing pipe (2) is sleeved outside the inner steam pipe (1), the upper end of the pressure reducing pipe (2) is connected with the side wall of the inner steam pipe (1) in a sealed mode, and a cavity is formed between the pressure reducing pipe (2) and the inner steam pipe (1) to form a pressure reducing cavity (12). An inner bottom hole (3) is formed in the bottom end of the inner steam pipe (1); an outer bottom hole (4) is formed in the bottom end of the pressure reducing pipe (2); inner side holes (5) which are uniformly distributed are formed in the side wall of the inner steam pipe (1), outer side holes (6) which are uniformly distributed are formed in the side wall of the pressure reducing pipe (2), and the inner side holes (5) and the outer side holes (6) are arranged in a staggered manner; the steam spraying device can reduce pressure of steam and uniformly spray the steam, can effectively reduce noise, and is good in practicability.

Description

Technical Field

[0001] The utility model relates to the field of gasifiers, in particular to a multi-stage cage-type steam injection device. Background Art

[0002] A water bath vaporizer is a device that vaporizes low-temperature liquid gas into gaseous gas by exchanging heat between hot water and low-temperature liquid gas. Applicable media include liquid oxygen, liquid nitrogen, liquid argon, liquid carbon dioxide, liquefied petroleum gas, liquefied natural gas, etc. Existing water bath vaporizers mostly use an annular tube plus a steam nozzle to perform heat exchange to achieve the purpose of vaporization during the vaporization process. However, this form has many shortcomings: 1. The range of steam injection is limited, and the hot water is heated unevenly, resulting in uneven heat exchange; 2. After water enters the annular tube, the water cannot be completely drained, which is easy to cause water hammer and vibration, resulting in the root of the nozzle breaking; 3. The noise is loud during the vaporization process; 4. There is no pressure reduction function, and the applicable steam pressure range is small. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-stage cage-type steam injection device. The utility model can reduce the pressure of steam and inject it evenly, and can also effectively reduce noise, and has good practicality.

[0004] The technical solution of the utility model is as follows: a multi-stage cage-type steam injection device comprises an inner steam pipe, a pressure reducing pipe is arranged outside the inner steam pipe, the upper end of the pressure reducing pipe is closedly connected with the side wall of the inner steam pipe, and a cavity exists between the pressure reducing pipe and the inner steam pipe to form a pressure reducing chamber; an inner bottom hole is arranged at the bottom end of the inner steam pipe; an outer bottom hole is arranged at the bottom end of the pressure reducing pipe; evenly distributed inner side holes are arranged on the side wall of the inner steam pipe, evenly distributed outer side holes are arranged on the side wall of the pressure reducing pipe, and the inner side holes and the outer side holes are staggered.

[0005] In the above-mentioned multi-stage cage-type steam injection device, a plurality of pressure reducing pipes are sequentially sleeved from the inside to the outside, there is a cavity between adjacent pressure reducing pipes, and the outer side holes of adjacent pressure reducing pipes are staggered.

[0006] In the aforementioned multi-stage cage-type steam injection device, the inner steam pipe comprises an inner pipe body, an inner closed circular plate is provided at the end of the inner pipe body, and the inner bottom hole is arranged on the inner closed circular plate.

[0007] In the aforementioned multi-stage cage-type steam injection device, the pressure reducing pipe includes an outer tube body, one end of the outer tube body is provided with an annular closing plate connected to the outer wall of the inner steam tube, the other end of the outer tube body is provided with an outer closing circular plate, and the outer bottom hole is arranged on the outer closing circular plate.

[0008] In the aforementioned multi-stage cage-type steam injection device, the inner holes adjacent to each other laterally are arranged in a collinear manner, and the inner holes adjacent to each other longitudinally are arranged staggered; the outer holes adjacent to each other laterally are arranged in a collinear manner, and the outer holes adjacent to each other longitudinally are arranged staggered.

[0009] In the aforementioned multi-stage cage-type steam injection device, the distribution height of the outer holes is greater than the distribution height of the inner holes.

[0010] Compared with the prior art, the utility model allows hot water to directly enter the inner steam pipe before steam is passed through, and after steam is passed through, hot water is discharged from the inner hole along with the steam, and residual hot water is discharged from the inner bottom hole and the outer bottom hole, thereby avoiding water hammer between steam and water in the inner steam pipe and reducing noise; the steam enters the decompression chamber after being discharged from the inner hole of the inner steam pipe, and during the process, since the inner hole and the outer hole are staggered, the steam discharged from the inner hole will be evenly sprayed onto the inner wall of the decompression pipe, on the one hand, the speed of the steam is slowed down and the original impact force is reduced, thereby achieving decompression; on the other hand, since the inner holes are evenly distributed, the impact forces on the decompression pipe cancel each other, and the pipe itself is not easy to vibrate, and has good reliability; the steam in the decompression chamber is discharged from the outer hole, achieving uniform steam spraying and uniform heating of the hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the inner steam pipe of the utility model;

[0013] Figure 3 It is a schematic diagram of the cross-sectional structure of the pressure reducing pipe of the utility model.

[0014] The markings in the attached drawings are: 1-inner steam pipe; 2-pressure reducing pipe; 3-inner bottom hole; 4-outer bottom hole; 5-inner side hole; 6-outer side hole; 7-inner tube body; 8-inner closed circular plate; 9-outer tube body; 10-annular closed plate; 11-outer closed circular plate; 12-pressure reducing chamber. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0016] Embodiment: A multi-stage cage steam injection device, as shown in the attached Figure 1 As shown in the attached Figure 1 As shown, it includes an inner steam pipe 1, a pressure reducing pipe 2 with both ends closed is welded outside the inner steam pipe 1, the upper end of the pressure reducing pipe 2 and the side wall of the inner steam pipe 1 are welded and closed, and there is a cavity between the pressure reducing pipe 2 and the inner steam pipe 1 to form a pressure reducing cavity 12; an inner bottom hole 3 is processed on the bottom end of the inner steam pipe 1; an outer bottom hole 4 corresponding to the inner bottom hole 3 is processed on the bottom end of the pressure reducing pipe 2; as shown in the attached Figure 2 and attached Figure 3 As shown, the inner steam pipe 1 is processed with evenly distributed inner holes 5 on the side wall, and the pressure reducing pipe 2 is processed with evenly distributed outer holes 6 on the side wall, and the inner holes 5 and the outer holes 6 are staggered; the pressure reducing pipes 2 are sequentially sleeved with a plurality of pressure reducing pipes from the inside to the outside, and there is a cavity between adjacent pressure reducing pipes, and the outer holes 6 of adjacent pressure reducing pipes 2 are staggered, and the impact force of steam is further reduced by a plurality of pressure reducing pipes to achieve multi-stage pressure reduction; the inner steam pipe 1 includes an inner tube body 7, and an inner closed circular plate 8 is welded at the end of the inner tube body 7, and the inner bottom hole 3 is processed on the inner closed circular plate 8; The pressure reducing pipe 2 comprises an outer tube body 9, one end of which is welded with an annular closing plate 10 welded to the outer wall of the inner steam tube 1, the other end of which is welded with an outer closing circular plate 11, and the outer bottom hole 4 is processed on the outer closing circular plate 11; the laterally adjacent inner holes 5 are collinearly arranged, and the longitudinally adjacent inner holes 5 are staggered; the laterally adjacent outer holes 6 are collinearly arranged, and the longitudinally adjacent outer holes 6 are staggered; the distribution height of the outer holes 6 is greater than the distribution height of the inner holes 5, ensuring that the steam diffused by being blocked can still be fully ejected from the outer holes.

[0017] Working principle: before steam is passed, hot water directly enters the inner steam pipe 1. After steam is passed, hot water is discharged from the inner hole 5 along with the steam, and the residual hot water is discharged from the inner bottom hole 3 and the outer bottom hole 4, thereby avoiding water hammer between steam and water in the inner steam pipe 1 and reducing noise; after the steam is discharged from the inner hole 5 of the inner steam pipe 1, it enters the decompression chamber. During the process, since the inner hole 5 and the outer hole 6 are staggered, the steam discharged from the inner hole 5 will be evenly sprayed onto the inner wall of the decompression pipe 2. On the one hand, the speed of the steam is slowed down and the original impact force is reduced, thereby achieving decompression. On the other hand, since the inner holes are evenly distributed, the impact forces on the decompression pipe offset each other, and it is not easy to vibrate itself, so the reliability is good; the steam in the decompression chamber is discharged from the outer hole, achieving uniform steam spraying and uniform heating of the hot water.

[0018] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. In this embodiment, up, down, left, right, front, and back only represent their relative positions and do not represent their absolute positions. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A multi-stage cage-type steam injection device, characterized in that: The invention comprises an inner steam pipe (1), wherein a pressure reducing pipe (2) is arranged outside the inner steam pipe (1), the upper end of the pressure reducing pipe (2) is sealedly connected to the side wall of the inner steam pipe (1), and a cavity exists between the pressure reducing pipe (2) and the inner steam pipe (1) to form a pressure reducing chamber (12); an inner bottom hole (3) is arranged at the bottom end of the inner steam pipe (1); an outer bottom hole (4) is arranged at the bottom end of the pressure reducing pipe (2); evenly distributed inner side holes (5) are arranged on the side wall of the inner steam pipe (1), and evenly distributed outer side holes (6) are arranged on the side wall of the pressure reducing pipe (2), and the inner side holes (5) and the outer side holes (6) are arranged staggered.

2. The multi-stage cage-type steam injection device according to claim 1, characterized in that: A plurality of the decompression tubes (2) are sequentially sleeved from the inside to the outside, a cavity is provided between adjacent decompression tubes (2), and the outer side holes (6) of adjacent decompression tubes (2) are staggered.

3. The multi-stage cage-type steam injection device according to claim 1, characterized in that: The inner steam pipe (1) comprises an inner pipe body (7), an inner closed circular plate (8) is provided at the end of the inner pipe body (7), and the inner bottom hole (3) is arranged on the inner closed circular plate (8).

4. The multi-stage cage-type steam injection device according to claim 1, characterized in that: The pressure reducing pipe (2) comprises an outer pipe body (9), one end of the outer pipe body (9) is provided with an annular closing plate (10) connected to the outer wall of the inner steam pipe (1), the other end of the outer pipe body (9) is provided with an outer closing circular plate (11), and the outer bottom hole (4) is arranged on the outer closing circular plate (11).

5. The multi-stage cage-type steam injection device according to claim 1, characterized in that: The inner holes (5) adjacent to each other in the transverse direction are arranged in a collinear manner, and the inner holes (5) adjacent to each other in the longitudinal direction are arranged in a staggered manner; the outer holes (6) adjacent to each other in the transverse direction are arranged in a collinear manner, and the outer holes (6) adjacent to each other in the longitudinal direction are arranged in a staggered manner.

6. The multi-stage cage-type steam injection device according to claim 1, characterized in that: The distribution height of the outer holes (6) is greater than the distribution height of the inner holes (5).

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