CN210601572U - Steam-water separation device of low-pressure boiler drum - Google Patents

Abstract

A steam-water separation device of a low-pressure boiler steam pocket comprises a cyclone separator, a corrugated plate separator and a wire mesh separator, wherein the wire mesh separator is installed and connected to the upper part of the corrugated plate separator; the cyclone separator, the corrugated plate separator and the wire mesh separator are all arranged in a steam drum of the low-pressure boiler; the wire mesh separator is in a hollow inverted square pyramid shape formed by connecting and enclosing four enclosing plates, a vapor-equalizing pore plate is packaged at the bottom of the square pyramid, a wire mesh I is packaged in the middle of the square pyramid, and a wire mesh II is packaged at the upper part of the square pyramid. This separator enables the steam-water and fully separates, reduces the wet steam and carries the water particle to get into the over heater, improves the safe operating duration of sugar boiler, prolongs the life of boiler over heater, all kinds of valves and controller, improves the over heater thermal efficiency.

Description

Steam-water separation device of low-pressure boiler drum

Technical Field

The utility model relates to a boiler equipment's technical field specifically is a steam-water separation device of low pressure boiler drum.

Background

Steam is needed in many industrial and living occasions, steam boilers are widely applied due to energy conservation, high efficiency and safety, high-temperature gas generated after flame is sprayed out by a burner exchanges heat with water in the boiler, the water is heated to boiling to generate steam, the steam flows out from a steam outlet of the boiler, in order to ensure the pure quality of the steam, the water contained in the steam must be discharged from the steam-water separator, the water is separated from the steam without entering a steam pipeline, and therefore the negative influence of the water in the steam is avoided. The publications also report steam-water separation devices for some boilers, such as:

1. chinese patent: a steam-water separation device for a boiler, application number: 201610527257.1, filing date: 2016.06.30, Applicant: zhejiang tefu boiler ltd, address: 314400 Changan Zhen Touche 36, jiaxing, Haining, Zhejiang province, inventor: zhao Kadong, Denglong Qiang, old and skillful, Liujie, Liu Da Ping, and Zheng Yan, abstract: the invention provides a steam-water separation device for a boiler, and belongs to the technical field of machinery. The steam-water separation device solves the problem that the steam-water separation phase rate of the existing steam-water separation device for the boiler is not high. This catch water for boiler, barrel and catch water including horizontal setting, the barrel is including the steam outlet that is located the barrel top and the steam inlet that is located the barrel lower part, catch water connects on steam outlet, catch water includes buckled plate separator box and the wire net separator box that is linked together with steam outlet, buckled plate separator box and wire net separator box all incline the setting, and the play steam end terminal surface of wire net separator box supports and leans on the steam inlet end terminal surface of buckled plate separator box, the lateral part of buckled plate separator box is connected with the drain pipe of a vertical drainage downwards. It sets up buckled plate separator box and the slope of wire net separator box, and drain pipe connection is on the buckled plate separator box, can avoid the comdenstion water to flow by the wire net separator box, improves steam-water separation efficiency effectively.

2. Chinese patent: a steam-water separator for a steam boiler, application No.: 201420673008. X, application date: 2014.11.12, patentee: zhejiang shang energy boiler ltd, address: 312363 Shaoxing province of Zhejiang province, Shangxing province, Shangyu district, Chaozhou district, inventor: xuxiaoming, continental swimming, Liangyaniang, xugang, abstract: the utility model discloses a steam-water separator for a steam boiler, which comprises an air inlet pipe, wherein the bottom of the air inlet pipe is provided with an inclined plate, the bottom of the inclined plate is provided with a condensate pipe which is directly communicated into the furnace body and below the water surface, the upper half part in the air inlet pipe is provided with a wire mesh demister, and the pipe wall of the air inlet pipe between the wire mesh demister and the inclined plate is provided with air inlet holes which are uniformly and densely distributed; the top and a second grade separator of intake pipe are linked together, and in a catch water tank was arranged in to the one end that the second grade intake pipe was kept away from to U type trachea in the second grade separator, catch water tank's top had a tertiary silk screen demister, and catch water tank's bottom and a tertiary condensate pipe are linked together, have adopted the utility model discloses a steam is steam separator for boiler, through tertiary catch water, all use efficient silk screen demister in every grade catch water, get rid of the condensate water of mixing in steam, make and finally not contain the condensate water in the steam that flows to the technology scene basically to adapt to high-demand's technology demand.

3. Chinese patent: steam-water separation device of small-size direct current steam boiler, application date: 2009.3.13, application No.: 200920035264.5, patentee: wuxi Taihu boiler Co., Ltd, address: 214128A spring town of south lake district of Wuxi city, Jiangsu province, the inventor: jinfeng, li long, liu bo, high dawn strong, chenyu, abstract: the utility model relates to a steam-water separation device of a small-sized direct current steam boiler, in particular to an external steam-water separation device applied to a small-capacity direct current steam boiler. The steam-water separation device comprises a steam-water separation device cylinder structure and an internal separation assembly, wherein the internal separation assembly is arranged in the steam-water separation device cylinder structure; the internal separation component consists of a primary steam-water separation element and a secondary steam-water separation element, the primary steam-water separation element and the secondary steam-water separation element are arranged in the steel pipe cylinder, and the secondary steam-water separation element is arranged above the primary steam-water separation element; the primary steam-water separation element consists of a central rod and spiral fins, and the spiral fins are sleeved on the central rod; the secondary steam-water separation element is a steel wire mesh component. The steam-water separation device can perform primary and secondary steam-water separation on saturated steam generated by the evaporation section of the small-sized direct-flow steam boiler, can improve the dryness of the steam, and can improve the quality of the steam.

4. Chinese patent: boiler compound catch water, application number: 201020656723.4, filing date: 2010.12.14, patentee: zeng yuntian boiler ltd, address: 421216 Henan province, Hengyang city, Hengyang West Shu economic development area, inventor: luyilin, gilshicheng and hayu, abstract: a compound steam-water separator of a boiler comprises a shutter type steam-water separator, a first steam equalizing plate and a second steam equalizing plate; the first steam equalizing plate is arranged above the shutter type steam-water separator, and air holes with the same aperture are uniformly formed in the first steam equalizing plate; the second vapor homogenizing plate is arranged below the shutter type vapor-water separator, and air holes with the same aperture are unevenly distributed on the second vapor homogenizing plate. So, combine by gas board and shutter formula steam-water separator of two kinds of differences, constitute compound steam-water separator structure by last, well, three kinds of separator of lower difference, can carry out cubic steam-water separation in proper order to the steam that gets into effectively, accomplish steam-water separation process in the boiler of big evaporation capacity, big water content.

Most of the steam required by the sugar industry of sugarcane is provided by a low-pressure boiler drum, and basically, the required superheated steam is the superheated steam which is obtained by feeding the steam output by the low-pressure boiler drum into a superheater for further heating. The steam output from the low-pressure boiler steam drum is mixed with a plurality of water particles, and the water particles are brought into the superheater tube, so that most of salt on the water particles is remained on the heating surface of the superheater tube to form salt scale to influence heat transfer, the temperature value of the superheated steam is reduced, and if the salt scale layer is too thick, the tube wall is over-heated to further cause tube explosion of the superheater tube.

Disclosure of Invention

The utility model aims at providing a steam-water separator of low pressure boiler drum, this separator enable the catch water, reduce wet steam and carry the water particle and get into the over heater, improve the safe operating duration of sugar boiler, prolong the life of boiler over heater, all kinds of valves and controller, improve the over heater thermal efficiency.

In order to realize the purpose of the utility model, the technical scheme who takes is:

a steam-water separation device of a low-pressure boiler steam pocket comprises a cyclone separator, a corrugated plate separator and a wire mesh separator, wherein the wire mesh separator is installed and connected to the upper part of the corrugated plate separator; the cyclone separator, the corrugated plate separator and the wire mesh separator are all arranged in a steam drum of the low-pressure boiler; the wire mesh separator is in a hollow inverted square pyramid shape formed by connecting and enclosing four enclosing plates, a vapor-equalizing pore plate is packaged at the bottom of the square pyramid, a wire mesh I is packaged in the middle of the square pyramid, and a wire mesh II is packaged at the upper part of the square pyramid. Both cyclone separators and corrugated plate separators are commercially available, for example from the Guangxi Sterculia boiler plant.

Preferably: the aperture of the steam equalizing pore plate is 0.1-0.3 mm, and the pitch is 0.8-1.2 mm.

Preferably: the mesh number of the screen I and the screen II is 50-70 meshes.

Researches show that a cyclone separator and a corrugated plate separator are arranged in a low-pressure boiler steam drum of a sugarcane sugar factory to separate steam-water mixtures, the steam-water mixtures in a three-dimensional steam drum of the boiler enter the cyclone separator along the tangential direction and then are converted into rotary motion from linear motion, because the steam and the water have different gravities, the steam spirally rises in the cyclone cylinder to form a steam column, and the water drops are thrown to the cylinder wall and rotationally descend under the action of gravity, are gathered together and then flow downwards into the water space in the boiler cylinder, the wet steam still flows upwards continuously towards the original direction and enters the corrugated plate separator at the top for secondary separation, the flow direction of the wet steam entering the corrugated plate separator is changed, the wet steam after secondary separation continuously flows upwards and enters the superheater for continuous heating to form superheated steam, the water droplets in the wet steam are collected on the corrugated plate to form large liquid droplets, and then the large liquid droplets flow downwards into the water space in the drum. The steam separated by the cyclone separator and the corrugated plate separator still contains a plurality of water particles, and the water particles are brought into the superheater tube, so that most of salt on the water particles is remained on the heating surface of the superheater tube to form salt scale to influence heat transfer, the temperature value of the superheated steam is reduced, and if the salt scale layer is too thick, the tube wall is over-heated to further cause tube explosion of the superheater tube. The steam-water separation device is characterized in that a steam-equalizing pore plate is arranged on an original corrugated plate steam-water separator in a steam boiler barrel, the purpose is to uniformly raise steam flow, an inverted square cone stainless steel wire net device is arranged on the basis of the steam-equalizing pore plate, and materials used by the wire net separator must have the characteristics of high temperature resistance, high pressure resistance and scouring resistance, such as alloy materials. Because the sizes of the steam and the liquid particles in the steam are different, the liquid and the steam are mixed and flow through the wire mesh just like passing through the wire mesh, the steam can smoothly pass through, the liquid is intercepted and attached to the wire mesh, and the liquid and the wire mesh are gathered together under the action of tension, and then the liquid and the steam flow to the bottom of the separator under the action of gravity and are discharged to the water space at the bottom of the boiler barrel. The steam-water separation device can realize further separation of wet steam after installation, has good separation effect, can fully separate steam and water, further reduces the water particles carried by the wet steam to enter the superheater, improves the safe operation time of the sugar making boiler, prolongs the service life of the superheater of the boiler, various valves and the controller, improves the thermal efficiency of the superheater, and also improves the energy conservation and consumption reduction.

Drawings

FIG. 1 is a schematic diagram of the installation of the steam-water separation device of the low-pressure boiler drum;

FIG. 2 is a schematic diagram of the configuration of the wire separator of FIG. 1;

FIG. 3 is a top view of FIG. 2;

the part names of the sequence numbers in the figure are:

1. cyclone separator, 2, corrugated plate separator, 3, silk screen separator, 4, steam equalizing hole board, 5, bounding wall, 6, silk screen I, 7, silk screen II.

Detailed Description

For a more clear description of the present technology, the present technology is further described in detail below with reference to the accompanying drawings and examples.

Example 1

A steam-water separation device of a low-pressure boiler steam pocket comprises a cyclone separator 1, a corrugated plate separator 2 and a wire mesh separator 3, wherein the wire mesh separator 3 is installed and connected to the upper part of the corrugated plate separator 2, the corrugated plate separator 2 is installed at an outlet at the top of the cyclone separator 1, and an inlet of the cyclone separator 1 is connected with an outlet of a cold wall pipe of a low-pressure boiler; the cyclone separator 1, the corrugated plate separator 2 and the wire mesh separator 3 are all arranged in a steam drum of the low-pressure boiler; the silk screen separator 3 is connected by four enclosing plates 5 to form a hollow inverted square pyramid shape, and a steam equalizing hole plate 4 for enabling steam to uniformly rise and pass is packaged at the bottom of the square pyramid; the middle part of the square cone is packaged with a wire mesh I6, and the upper part of the square cone is packaged with a wire mesh II 7.

Example 2

A steam-water separation device of a low-pressure boiler steam pocket comprises a cyclone separator 1, a corrugated plate separator 2 and a wire mesh separator 3, wherein the wire mesh separator 3 is installed and connected to the upper part of the corrugated plate separator 2, the corrugated plate separator 2 is installed at an outlet at the top of the cyclone separator 1, and an inlet of the cyclone separator 1 is connected with an outlet of a cold wall pipe of a low-pressure boiler; the cyclone separator 1, the corrugated plate separator 2 and the wire mesh separator 3 are all arranged in a steam drum of the low-pressure boiler; the wire mesh separator 3 is in a hollow inverted square pyramid shape formed by connecting four enclosing plates 5, a steam-equalizing hole plate 4 is packaged at the bottom of the square pyramid, the hole diameter of the steam-equalizing hole plate 4 is 0.1-0.3 mm, and the hole pitch is 0.8-1.2 mm; the middle part of the square cone is packaged with a wire mesh I6, and the upper part of the square cone is packaged with a wire mesh II 7. The mesh number of the screen I6 and the screen II 7 is 50-70 meshes.

Application case

1. Before 2017-2018 season of Guangxi sugar manufacturing company, a cyclone separator and a corrugated plate separator are installed in a low-pressure boiler steam drum to separate a steam-water mixture, and after one season of squeezing is used, thicker salt scale is formed on the heating surface of a superheater pipe and needs to be cleaned and maintained; later, the steam-water separation device of the application is adopted in a low-pressure boiler steam drum of the company, so that a little salt deposit is found on the heating surface of the overheating pipe only after two squeezing seasons are used, and the cleaning is not needed.

The above description is not intended to limit the present application, and the present application is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions or substitutions within the spirit and scope of the present application.

Claims (3)

1. The utility model provides a catch water of low pressure boiler steam pocket, includes cyclone (1) and corrugated plate separator (2), its characterized in that: the low-pressure boiler is characterized by further comprising a wire mesh separator (3), wherein the wire mesh separator (3) is installed and connected to the upper portion of the corrugated plate separator (2), the corrugated plate separator (2) is installed at an outlet at the top of the cyclone separator (1), and an inlet of the cyclone separator (1) is connected with an outlet of a cold wall pipe of the low-pressure boiler; the cyclone separator (1), the corrugated plate separator (2) and the wire mesh separator (3) are all arranged in a steam drum of the low-pressure boiler; the silk screen separator (3) is connected by four bounding walls (5) and encloses into the square pyramid form of cavity handstand, the bottom of square pyramid is packaged with even vapour orifice plate (4), the middle part of square pyramid is packaged with silk screen I (6), the upper portion of square pyramid is packaged with silk screen II (7).

2. The steam-water separation device of a low-pressure boiler drum according to claim 1, characterized in that: the aperture of the steam equalizing pore plate (4) is 0.1-0.3 mm, and the pitch is 0.8-1.2 mm.

3. The steam-water separation device of a low-pressure boiler drum according to claim 1, characterized in that: the mesh number of the silk screen I (6) and the silk screen II (7) is 50-70 meshes.

Images