Efficient steam-water separator matched with tubular steam boiler

Abstract

The utility model relates to the technical field of steam-water separation equipment, in particular to an efficient steam-water separator matched with a tubular steam boiler, which comprises an outer barrel, a separation barrel is arranged in the middle of the inside of the outer barrel, separation spiral blades are mounted on the outer wall of the separation barrel, and openings are arranged at the upper end and the lower end of the separation barrel. A steam-water separation baffle is arranged on the upper portion of the separation cylinder, a lower separation baffle is arranged on the lower portion of the separation cylinder, and a guide plate is obliquely installed on the outer side of the upper portion of the separation cylinder. According to the efficient steam-water separator matched with the through-flow type steam boiler, by combining the baffle type separation principle and the steam rotation type separation principle, the separator keeps extremely high separation efficiency within a large flow speed range. Specifically, when the steam speed is below 13m / s, the separation efficiency can reach 98%, so that high dryness of the steam is ensured. In practical application, the steam-water separator effectively solves the problems that a traditional separator is not high in separation efficiency, the steam dryness is difficult to guarantee and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of steam - water separation equipment, and specifically, to a high - efficiency steam - water separator supporting a once - through steam boiler. Background Technique

[0002] During the operation of a steam boiler, steam - water separation is a crucial link. Traditional steam - water separators often have problems such as low separation efficiency and difficulty in ensuring steam dryness, which directly affect the operation efficiency of the steam boiler and the steam quality. Especially in a once - through steam boiler, due to the complex flow paths of steam and water and the relatively high speed of the steam - water mixture, traditional steam - water separation technologies often struggle to meet the requirements of efficient separation.

[0003] Once - through steam boilers have been widely used in industrial production, central heating, urban thermal power plants and other fields due to their advantages such as compact structure, high thermal efficiency, and rapid heating. However, with the continuous improvement of the requirements for steam quality, how to improve the steam - water separation efficiency and ensure steam dryness has become an important direction for the technical improvement of once - through steam boilers.

[0004] Most of the existing steam - water separators adopt natural separation or simple mechanical separation principles, such as structures like baffles and orifice plates. When dealing with steam - water mixtures with high flow rates and high moisture contents, these separators often have problems such as incomplete separation and easy secondary entrainment of water droplets. Therefore, developing a high - efficiency and reliable steam - water separator is of great significance for improving the overall performance of once - through steam boilers. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high - efficiency steam - water separator supporting a once - through steam boiler to solve the problems in the above - mentioned background technique, that is, most of the existing steam - water separators adopt natural separation or simple mechanical separation principles, such as structures like baffles and orifice plates. When dealing with steam - water mixtures with high flow rates and high moisture contents, these separators often have problems such as incomplete separation and easy secondary entrainment of water droplets.

[0006] To achieve the above - mentioned purpose, the utility model provides a high - efficiency steam - water separator supporting a once - through steam boiler, which includes an outer cylinder. A separation cylinder is arranged in the middle of the inner part of the outer cylinder. Separation spiral blades are installed on the outer wall of the separation cylinder. Openings are arranged at both the upper and lower ends of the separation cylinder. A steam - water separation baffle is arranged at the upper part of the separation cylinder. A lower - part separation baffle is arranged at the lower part of the separation cylinder. A deflector is obliquely installed on the outer side of the upper part of the separation cylinder.

[0007] Preferably, a vertical water flow down - leading pipe is arranged at the bottom end of the deflector, and the bottom end of the water flow down - leading pipe is communicated with the bottom of the outer cylinder.

[0008] Preferably, a steam inlet pipe is connected to one side of the outer cylinder, a dry steam discharge pipe is connected to the top of the outer cylinder, and a separated water discharge pipe is connected to the bottom of the outer cylinder.

[0009] Preferably, the lower separation baffle includes a horizontal plate, a ramp plate is installed on the outer side edge of the horizontal plate, and a plurality of water passing holes are arranged on the surface of the ramp plate.

[0010] Preferably, a plurality of exhaust holes are evenly arranged on the surface of the steam-water separation baffle.

[0011] Preferably, the distance between the top of the separation cylinder and the steam-water separation baffle is 5-10 cm, and the distance between the bottom of the separation cylinder and the lower separation baffle is 5-10 cm.

[0012] Preferably, the outer side wall of the separation spiral blade is fixedly welded to the inner wall of the outer cylinder, and the inner side wall of the separation spiral blade is fixedly welded to the outer side wall of the separation cylinder.

[0013] Preferably, the included angle between the guide plate and the horizontal plane is 60°.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the cross-flow steam boiler supporting high-efficiency steam-water separator, by combining the two separation principles of baffle type and steam swirl type, the separator maintains extremely high separation efficiency within a relatively large flow velocity range. Specifically, when the steam velocity is below 13 m / s, its separation efficiency can reach 98%, thus ensuring the high dryness of the steam.

[0016] In practical applications, this steam-water separator effectively solves the problems existing in traditional separators, such as low separation efficiency and difficulty in ensuring steam dryness. It utilizes the combined structure of the separation cylinder and the separation spiral blade, and effectively throws out the moisture in the steam through the swirling action, and further improves the dryness of the steam through the secondary separation effects of the steam-water separation baffle and the lower separation baffle.

[0017] In addition, the separator also exhibits advantages such as compact structure and convenient maintenance. Its design is reasonable, facilitating installation, maintenance and repair, and reducing the use cost. At the same time, its high-efficiency steam-water separation performance also improves the overall operation efficiency and steam quality of the cross-flow steam boiler, meeting the requirements of modern industrial production for high-quality steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the steam-water separation baffle in the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the lower separation baffle in the present utility model.

[0021] The meanings of each label in the figure are as follows:

[0022] 1. Outer cylinder; 11. Steam inlet pipe; 12. Dry steam discharge pipe; 13. Separated water discharge pipe; 2. Separation cylinder; 3. Steam-water separation baffle; 31. Exhaust hole; 4. Separation spiral blade; 5. Lower separation baffle; 51. Horizontal plate; 52. Slope plate; 6. Water flow down-leading pipe; 7. Deflector plate. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The present utility model provides a cross-flow steam boiler supporting high-efficiency steam-water separator, as Figures 1 - 3 shown, which includes an outer cylinder 1. A separation cylinder 2 is arranged in the middle of the interior of the outer cylinder 1. A separation spiral blade 4 is installed on the outer wall of the separation cylinder 2. Openings are provided at both the upper and lower ends of the separation cylinder 2. A steam-water separation baffle 3 is arranged at the upper part of the separation cylinder 2. A lower separation baffle 5 is arranged at the lower part of the separation cylinder 2. A deflector plate 7 is obliquely installed on the outer side of the upper part of the separation cylinder 2.

[0025] In this embodiment, a vertical water flow down-leading pipe 6 is arranged at the bottom end of the deflector plate 7. The bottom end of the water flow down-leading pipe 6 is communicated with the bottom of the outer cylinder 1, which is convenient for the steam-water separation baffle 3 to block the water and guide it downward to the bottom of the outer cylinder 1.

[0026] Specifically, a steam inlet pipe 11 is connected to one side of the outer cylinder 1 to facilitate the entry of the gas to be dried. A dry steam discharge pipe 12 is connected to the top of the outer cylinder 1 to facilitate the discharge of the dried gas to the outside. A separated water discharge pipe 13 is connected to the bottom of the outer cylinder 1 to facilitate the discharge of the separated water to the outside.

[0027] Furthermore, the lower separation baffle 5 includes a horizontal plate 51. A slope plate 52 is installed on the outer side edge of the horizontal plate 51. A plurality of water passing holes are arranged on the surface of the slope plate 52 to facilitate the downward flow of water.

[0028] Furthermore, a plurality of exhaust holes 31 are evenly arranged on the surface of the steam-water separation baffle 3 to facilitate the passage of gas.

[0029] Furthermore, the distance between the top of the separation cylinder 2 and the steam-water separation baffle 3 is 5 - 10 cm, and the distance between the bottom of the separation cylinder 2 and the lower separation baffle 5 is 5 - 10 cm, so that the gas can have a certain buffer space at the inlet and outlet.

[0030] Furthermore, the outer side wall of the separation spiral blade 4 is fixedly welded to the inner wall of the outer cylinder 1, and the inner side wall of the separation spiral blade 4 is fixedly welded to the outer side wall of the separation cylinder 2, which facilitates the fixation of the separation spiral blade 4.

[0031] Furthermore, the angle between the deflector 7 and the horizontal plane is 60°, so that the water flow can flow stably and evenly downward to the water flow downcomer 6.

[0032] When the cross-flow steam boiler supporting high-efficiency steam-water separator of the present utility model is in use, first, when the steam to be dried enters the interior of the outer cylinder 1 through the steam inlet pipe 11, the steam first contacts the separation cylinder 2 and the separation spiral blade 4 on its outer wall. Due to the special design of the separation spiral blade 4, a swirling effect will be generated when the steam passes through, which effectively throws out the moisture in the steam and separates it from the steam. The steam is blocked by the lower separation baffle 5 downward and enters the interior of the separation cylinder 2 from the bottom end of the separation cylinder 2.

[0033] Subsequently, the steam that has been preliminarily separated continues to rise and contacts the steam-water separation baffle 3. The exhaust holes 31 uniformly distributed on the steam-water separation baffle 3 allow the steam to pass through, while most of the moisture is blocked by the baffle and cannot continue to rise.

[0034] At the same time, at the lower part of the separation cylinder 2, the lower separation baffle 5 also plays a key role. The design of its horizontal plate 51 and ramp plate 52, as well as the water passing holes on the surface of the ramp plate 52, all enable the downward flowing moisture to pass through smoothly and finally be guided to the bottom of the outer cylinder 1.

[0035] During the steam-water separation process, the deflector 7 also plays an important role. It is inclined and installed on the outer side of the upper part of the separation cylinder 2, forming an angle of 60° with the horizontal plane. Such a design enables the moisture separated by being blocked by the steam-water separation baffle 3 to flow stably and evenly downward and be discharged to the bottom of the outer cylinder 1 through the water flow downcomer 6.

[0036] Finally, the fully separated dry steam is discharged to the outside through the dry steam discharge pipe 12, and the separated moisture is discharged through the separated water discharge pipe 13. In this way, the steam-water separator of the present utility model realizes the efficient and full drying of the steam.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency steam-water separator for a cross-flow steam boiler, comprising an outer cylinder (1), characterized in that: A separation cylinder (2) is arranged in the middle of the outer cylinder (1), a separation spiral blade (4) is installed on the outer wall of the separation cylinder (2), openings are arranged at both the upper and lower ends of the separation cylinder (2), a steam-water separation baffle (3) is arranged at the upper part of the separation cylinder (2), a lower separation baffle (5) is arranged at the lower part of the separation cylinder (2), and a guide plate (7) is obliquely installed on the outer side of the upper part of the separation cylinder (2).

2. The high-efficiency steam-water separator for a cross-flow steam boiler according to claim 1 is characterized in that: A vertical water flow guide pipe (6) is provided at the bottom end of the guide plate (7), and the bottom end of the water flow guide pipe (6) is connected to the bottom of the outer cylinder (1).

3. The high-efficiency steam-water separator for a cross-flow steam boiler according to claim 2 is characterized in that: One side of the outer cylinder (1) is connected to a steam inlet pipe (11), the top of the outer cylinder (1) is connected to a dry steam outlet pipe (12), and the bottom of the outer cylinder (1) is connected to a separated water outlet pipe (13).

4. The high-efficiency steam-water separator for a cross-flow steam boiler according to claim 1 is characterized in that: The lower separation baffle (5) comprises a horizontal plate (51), an outer side edge of the horizontal plate (51) is provided with a ramp plate (52), and a surface of the ramp plate (52) is provided with a plurality of water holes.

5. The high-efficiency steam-water separator for a cross-flow steam boiler according to claim 1 is characterized in that: A plurality of exhaust holes (31) are evenly arranged on the surface of the steam-water separation baffle (3).

6. The high-efficiency steam-water separator for a cross-flow steam boiler according to claim 1 is characterized in that: The distance between the top of the separation cylinder (2) and the steam-water separation baffle (3) is 5-10 cm, and the distance between the bottom of the separation cylinder (2) and the lower separation baffle (5) is 5-10 cm.

7. The high-efficiency steam-water separator for a cross-flow steam boiler according to claim 1 is characterized in that: The outer wall of the separation spiral blade (4) is welded and fixed to the inner wall of the outer cylinder (1), and the inner wall of the separation spiral blade (4) is welded and fixed to the outer wall of the separation cylinder (2).

8. The high-efficiency steam-water separator for a cross-flow steam boiler according to claim 1 is characterized in that: The angle between the guide plate (7) and the horizontal plane is 60°.

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