CN220892210U - Steam-water separation device in high-efficiency boiler and boiler thereof - Google Patents

Abstract

The utility model discloses a steam-water separation device in an efficient pot and a boiler thereof, wherein the steam-water separation device comprises a separator body, a silk screen separator and a steam-water homogenizing pore plate; the two opposite sides of the separator body are sequentially provided with a steam inlet and a gap diversion trench along the steam flow direction, the bottom of the separator body is provided with a return pipe, and the top of the separator body is provided with a steam outlet for connecting a main steam connecting pipe; the silk screen separator is arranged below the steam-homogenizing pore plate. The steam-water separation device is composed of the structures of the separator body, the silk screen separator, the steam-homogenizing pore plate and the like, the steam inlet is formed in the side edge of the separator body, the flow direction of wet steam is changed for many times under the action of the gap diversion trench, after preliminary steam-water separation for many times is achieved, the steam-water mixture in the steam is separated again through the silk screen separator and the steam-homogenizing pore plate, and separated water flows back to the boiler barrel through the backflow pipe, so that a good steam-water separation effect is achieved, and the quality of the steam is improved.

Description

Steam-water separation device in high-efficiency boiler and boiler thereof

Technical Field

The utility model relates to the technical field of steam-water separation equipment, in particular to an efficient in-pot steam-water separation device and a boiler thereof.

Background

A boiler is an energy converter, which is a device that heats working medium water or other fluids to certain parameters such as steam, high temperature water or an organic heat carrier using heat energy released by combustion of fuel or other heat energy. The boiler is divided into a boiler and a furnace, wherein the boiler is a pressed part for containing water and steam, heating, vaporizing and steam-water separation are carried out on the water, and the furnace is a place for carrying out fuel combustion or other heat energy heat release, and comprises combustion equipment, a combustion chamber hearth, a heat release flue and the like.

In general, a steam generating boiler is called a steam boiler, and the steam boiler is internally or externally provided with a steam-water separation device to separate steam and water in wet steam generated in a boiler barrel and remove moisture in the wet steam to obtain dry steam, so that the steam quality can be improved, the water carrying amount of the steam can be reduced, and the harm of the wet steam to downstream equipment can be reduced.

In the prior art, devices for separating water in steam as much as possible by gravity, centrifugal force, inertial force and the like are generally used, and as most popular at present: the steam-water separation device adopts the steam-water separation plate, after the wet steam passes through the steam-water separation plate, the steam flows out upwards after the steam and the water are separated, and the moisture flows back into the boiler barrel, so that the separation of the moisture and the steam is achieved, but the steam directly enters from the right bottom of the device, directly washes the steam-water separation plate upwards, and under the condition of larger steam demand, the contact time of the steam and the steam-water separation plate is shorter due to larger steam flow rate, so that the dry steam still contains more moisture, and the quality of the steam is not high.

Disclosure of utility model

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a steam-water separation device in a high-efficiency pot, which solves the traditional problems, and through an improved steam-water separation structure and an improved steam inlet mode, the combination of the steam-water separation structure and the steam inlet mode achieves a better steam-water separation effect, so that the quality of steam is improved.

The second object of the utility model is to provide a boiler adopting the steam-water separation device in the high-efficiency boiler.

One of the purposes of the utility model is realized by adopting the following technical scheme:

An efficient in-pot steam-water separation device comprises a separator body, at least one silk screen separator and a steam-homogenizing pore plate, wherein the at least one silk screen separator and the steam-homogenizing pore plate are arranged in the separator body; the two opposite sides of the separator body are sequentially provided with a steam inlet and a gap diversion trench along the steam flow direction, the steam inlet is used for communicating with the boiler barrel, the gap diversion trench is communicated with the steam inlet, the bottom of the separator body is provided with a return pipe which is used for being inserted into the boiler barrel and is below the normal liquid level, and the top of the separator body is provided with a steam outlet which is used for being connected with a main steam connecting pipe; the screen separator is arranged below the steam-homogenizing pore plate.

Preferably, the wire mesh separator is arranged in a V-shape.

Preferably, the slope gradient of the silk screen separator is 1:5-1:2.

Preferably, the wire mesh separator is a wire mesh separator or a stainless steel wire mesh separator.

Preferably, the steam inlet is arranged above the gap diversion trench, and the width of the steam inlet is larger than the width of the gap diversion trench on the longitudinal section.

Preferably, the width of the gap diversion trench is 0.5-0.8 of the width of the steam inlet.

Preferably, the inner wall of the bottom plate of the separator body is of a V-shaped structure.

Preferably, the slope gradient of the inner wall of the bottom plate of the separator body is 1:10-1:8.

Preferably, the steam outlet is located at a side of the top of the separator body.

The second purpose of the utility model is realized by adopting the following technical scheme:

the boiler comprises a boiler body and the high-efficiency boiler internal steam-water separation device arranged in the boiler body, wherein a return pipe of the high-efficiency boiler internal steam-water separation device is inserted below the normal liquid level of a boiler barrel of the boiler body.

Compared with the prior art, the utility model has the beneficial effects that:

The steam-water separation device in the high-efficiency pot is composed of a separator body, a silk screen separator, a steam-homogenizing pore plate and other structures, a steam inlet is formed in the side edge of the separator body, the flow direction of wet steam is changed for many times under the action of a gap diversion trench, after preliminary steam-water separation for many times is achieved, the steam-water mixture in the steam is separated again through the silk screen separator and the steam-homogenizing pore plate in sequence, and separated water flows back into the pot barrel through a backflow pipe, so that a good steam-water separation effect is achieved, and the quality of the steam is improved.

Drawings

FIG. 1 is a front view of a steam-water separator in a boiler according to the present utility model;

FIG. 2 is a transverse cross-sectional view of the in-pot steam-water separator of FIG. 1;

fig. 3 is a longitudinal sectional view of the steam-water separator in the high-efficiency boiler shown in fig. 1.

In the figure: 100. a steam-water separation device in the high-efficiency pot; 10. a separator body; 11. a steam inlet; 12. a slit diversion trench; 13. a return pipe; 14. a steam outlet; 20. a wire mesh separator; 30. a steam-homogenizing pore plate; 200. a boiler barrel.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present utility model, it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

Referring to fig. 1 to 3, an in-boiler steam-water separator 100 according to a preferred embodiment of the present utility model is configured to be installed in a drum 200 of a gas/oil boiler to separate wet steam generated by the in-boiler steam-water separator 100, and specifically, the in-boiler steam-water separator 100 includes a separator body 10, at least one wire mesh separator 20 disposed in the separator body 10, and a steam-homogenizing hole plate 30; the two opposite sides of the separator body 10 are sequentially provided with a steam inlet 11 and a gap diversion trench 12 along the steam flow direction, the steam inlet 11 is used for communicating the boiler barrel 200, the gap diversion trench 12 is communicated with the steam inlet 11, the bottom of the separator body 10 is provided with a return pipe 13 which is used for being inserted below the normal liquid level of the boiler barrel 200, and the top of the separator body 10 is provided with a steam outlet 14 which is used for being connected with a main steam connecting pipe; the wire mesh separator 20 is arranged below the steam-homogenizing orifice 30.

The steam-water separation device 100 in the efficient pot is composed of the structures of the separator body 10, the silk screen separator 20, the steam-water homogenizing pore plate 30 and the like, the steam inlet 11 is formed in the side edge of the separator body 10, the flow direction of wet steam is changed for a plurality of times under the action of the gap diversion trench 12, after preliminary steam-water separation for a plurality of times is achieved, the steam-water mixture in the steam is separated again through the silk screen separator 20 and the steam-water homogenizing pore plate 30 in sequence, and separated water flows back to the boiler barrel 200 through the backflow pipe 13, so that a good steam-water separation effect is achieved, and the quality of the steam is improved.

The working principle is as follows: the wet steam generated in the boiler gathers in the boiler barrel 200 and flows upwards from bottom to top, when the wet steam flows to the bottom of the separation device, the flow direction of the steam changes, the moisture in the steam is adhered to the outer wall of the bottom plate of the separation device under the action of surface tension, the primary separation effect is achieved, and the steam continues to flow upwards after changing the direction; the steam flows to the steam inlet 11 on the left and right sides of the separating device along the two sides of the separating device, then flows into the gap diversion trench 12, the steam flowing downwards and upwards is changed into the steam flowing downwards from top to bottom, when the steam-water mixture flowing downwards impacts the gap diversion trench 12 of the separating device and the inner wall of the bottom plate, the steam flow direction changes, the moisture in the steam is adhered to the gap diversion trench 12 and the inner wall of the bottom plate under the action of inertia, the preliminary separation effect is achieved, the steam continues to flow upwards after changing the direction, finally, the screen separator 20 and the steam-homogenizing pore plate 30 are flushed upwards in sequence, the separated water is converged to the bottom, and then flows back to the boiler barrel 200 from the return pipe 13, and the dry steam flows into the main steam connecting pipe from the steam outlet 14, so that the optimal gas-liquid separation effect is achieved, and the screen separator 20 and the steam-homogenizing pore plate 30 can be flushed upwards only through multiple collisions, so the size of the steam flow speed does not influence the gas-liquid separation effect.

In this embodiment, the steam inlet 11 is disposed at a position of the sidewall of the separator body 10 near the upper end of the drum 200, the steam inlet 11 is disposed above the slot guide groove 12, and in a longitudinal section, as shown in fig. 3, the width of the steam inlet 11 is greater than the width of the slot guide groove 12, where the width of the slot guide groove 12 is 0.5-0.8 of the width of the steam inlet 11. As can be seen from fig. 3, the separator body 10 is provided with baffles on opposite sides thereof, which form the slit guide grooves 12 with the side walls of the separator body 10, so that the wet steam collides between the baffles and the side walls for a plurality of times after entering from the steam inlet 11.

As shown in fig. 3, the inner wall of the bottom plate of the separator body 10 has a substantially V-shaped structure, and the bottom plate has a certain gradient to collect the separated water into the return pipe 13. The slope gradient of the inner wall of the bottom plate of the separator body 10 is 1:10-1:8. As further shown in fig. 2, the steam outlet 14 is located at a side of the top of the separator body 10.

In one embodiment, the wire mesh separator 20 is generally V-shaped, and the slope gradient of the wire mesh separator 20 is 1:5-1:2, so that the separated water is converged to the lowest point and flows downwards. Wherein the wire mesh separator 20 is a wire mesh separator 20 or a stainless steel wire mesh separator 20. Preferably, the wire mesh separator 20 is a wire mesh separator 20, and in the above embodiment, the pore size of the wire mesh is set according to the tonnage of the specific equipment and the requirements of dry steam, such as 10nm-1000nm, and the like, which will not be described herein. In the present embodiment, the number of the screen separators 20 is 2, and in other embodiments, the number of the screen separators 20 is 3, 4, 5, or the like, which is set as required. In this design, the wire mesh separator 20 is provided with a slope that increases the effectiveness of the membrane separation, concentrates the bottom lowest point of the water, and then returns.

In this embodiment, the steam-homogenizing orifice 30 has an existing structure, specifically, the aperture is 12mm, or may be set according to a specific setting structure, which is not described herein.

Compared with the traditional steam-homogenizing pore plate, the improved design of the utility model prolongs the stroke of steam in the whole separation process and increases the gravity separation effect. Moreover, the steam-water separation device 100 in the high-efficiency pot adopts a modularized design, has small volume, can conveniently pass through the elliptical holes of 300x400, and is convenient for the installation of equipment.

In another embodiment, a boiler comprises a boiler body and the high-efficiency in-boiler steam-water separation device 100 installed in the boiler body, wherein a return pipe 13 of the high-efficiency in-boiler steam-water separation device 100 is inserted below the normal liquid level of a boiler barrel 200 of the boiler body. Specifically, the return pipe 13 is inserted into the normal liquid level 150mm of the boiler barrel 200 to form a water seal, so that the influence of the steam-water mixture flowing from bottom to top in the boiler barrel 200 on the separation device is avoided.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The steam-water separation device in the high-efficiency pot is characterized by comprising a separator body, at least one silk screen separator and a steam-homogenizing pore plate, wherein the silk screen separator and the steam-homogenizing pore plate are arranged in the separator body; the two opposite sides of the separator body are sequentially provided with a steam inlet and a gap diversion trench along the steam flow direction, the steam inlet is used for communicating with the boiler barrel, the gap diversion trench is communicated with the steam inlet, the bottom of the separator body is provided with a return pipe which is used for being inserted into the boiler barrel and is below the normal liquid level, and the top of the separator body is provided with a steam outlet which is used for being connected with a main steam connecting pipe; the screen separator is arranged below the steam-homogenizing pore plate.

2. The in-pot steam-water separator according to claim 1, wherein the wire mesh separator is V-shaped.

3. The steam-water separation device in an efficient pot of claim 2, wherein the slope gradient of the wire mesh separator is 1:5-1:2.

4. The in-pot steam-water separator according to claim 2, wherein the wire mesh separator is a wire mesh separator or a stainless steel wire mesh separator.

5. The in-boiler steam-water separator of claim 1, wherein the steam inlet is disposed above the slot guide groove, and the width of the steam inlet is greater than the width of the slot guide groove in a longitudinal section.

6. The device for separating steam from water in an efficient boiler according to claim 5, wherein the width of the gap diversion trench is 0.5-0.8 of the width of the steam inlet.

7. The steam-water separator in high-efficiency pot according to claim 1, wherein the inner wall of the bottom plate of the separator body has a V-shaped structure.

8. The steam-water separation device in an efficient pot of claim 7, wherein the slope gradient of the inner wall of the bottom plate of the separator body is 1:10-1:8.

9. The in-boiler steam-water separator of claim 1, wherein the steam outlet is located at a side of the top of the separator body.

10. A boiler, characterized by comprising a boiler body and the high-efficiency boiler steam-water separation device according to any one of claims 1-9 installed in the boiler body, wherein a return pipe of the high-efficiency boiler steam-water separation device is inserted below the normal liquid level of a boiler barrel of the boiler body.