CN111594824A

CN111594824A - Internal rotating film type deaerator

Info

Publication number: CN111594824A
Application number: CN202010336823.7A
Authority: CN
Inventors: 李立楼; 顾正亮; 穆金帅
Original assignee: Lianyungang Lide Power Equipment Co ltd
Current assignee: Lianyungang Lide Power Equipment Co ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-08-28

Abstract

The invention provides an internal rotating film type deaerator, which comprises a water inlet pipe, a water supply tank, a rotating film pipe, a stainless steel sliding hopper, an upper steam distribution pipe, an electric heating wire, a water spraying grate, a filler liquid air net and a lower steam distribution pipe, wherein the water supply tank is arranged at the upper side in a shell, the water inlet pipe is connected with the left side of the water supply tank, the rotating film pipe is fixed at the inner wall side of the water supply tank, the stainless steel sliding hopper is fixed at the lower end surface of the water supply tank, the upper steam distribution pipe is arranged at the lower side of the stainless steel sliding hopper, the electric heating wire is assembled at the lower side of the upper steam distribution pipe, the filler liquid air net is fixed at the lower side of the electric heating wire, the water spraying grate is fixed at the upper end surface of the filler liquid air net, the lower steam distribution pipe is arranged at the lower side in the shell, the design can fully remove oxygen in water, further improve the deoxid, the oxygen removing effect is improved deeply.

Description

Internal rotating film type deaerator

Technical Field

The invention relates to an internal rotating film type deaerator, and belongs to the technical field of rotating film deaerators.

Background

The rotary film deaerator is a new-type thermal deaerator, which has been awarded the innovation of the scientific and technological attack result of a new technological new product in the power department and is listed as a key popularization product in the power department. The rotary film type deoxygenation equipment mainly comprises two parts of a deoxygenation tower head, a deoxygenation water tank, a connecting pipe and an external connecting part, wherein a main part deoxygenator (deoxygenation tower head) comprises a shell, a novel rotary film device (film forming pipe), a water spraying grate, a heat storage filler liquid-steam net and the like. The rotary film deaerator has the following advantages: 1. the oxygen removal efficiency is high, and the qualification rate of the oxygen content of the feed water is 100 percent. The oxygen content of the water supplied by the atmospheric deaerator should be less than 15 mu/L, and the oxygen content of the water supplied by the pressure deaerator should be less than 7 mu/L. 2. The operation is stable and has no vibration. The device is suitable for negative pressure starting and sliding pressure operation, and manual complicated adjusting operation in starting and operation is avoided. 3. The adaptability is good, the requirements on water quality and water temperature are not strict, and the operation can be performed by about 50% of output in a short time. 4. The exhaust steam quantity is small, and the energy consumption is low.

Among the prior art, current rotating film deaerator is mostly outward the mode of revolving and supplies water, and such overall arrangement makes the unable bundle of collection of steam, can not effectively concentrate steam and get up the utilization, and the feedwater can not be fast and abundant with steam contact, and deoxidization effect efficiency is lower, and current rotating film deaerator deoxidization structure is not good, and deoxidization efficiency is not high, and the above-mentioned problem is solved to the urgent need for an internal rotating film deaerator now.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an internal rotating film type deaerator to solve the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an internal rotation membrane formula oxygen-eliminating device, includes casing and header tank, the header tank sets up the bottom of casing, casing upper end is provided with the pressure-limiting valve, be equipped with the barometer on the lateral wall of casing, the inside of casing is equipped with feed tank and rotary film pipe, be equipped with the inlet tube in the feed tank, the tip of inlet tube passes the shell wall and connects water inlet equipment, feed tank intermediate position department is equipped with water droplet shape and removes oxygen pipe, rotary film pipe fixes on removing oxygen pipe's the outer wall, just feed tank lateral wall and deoxidization union coupling switch on through the rotary film pipe, the bottom that removes oxygen pipe is equipped with the stainless steel sliding bucket, be equipped with steam feeding pipe, electric heating wire, trickle grate material liquid gas network and lower steam piping under the stainless steel sliding bucket in proper order.

Furthermore, the pressure limiting value of the pressure limiting valve is 1.2MPa, the temperature of the steam is kept at about 105 ℃ under the pressure which is 0.2MPa higher than the external atmospheric pressure in the shell, and oxygen in the feed water is sufficiently contacted with the steam to be removed.

Furthermore, spiral diversion lines are further arranged on the inner wall of the deoxidizing pipe, the water supply tank forms an inverted hopper-shaped air outlet structure, the spiral diversion lines enable steam to rise in a spiral mode, the retention time of the steam on the inner side of the deoxidizing pipe is prolonged, and the steam is in full contact with the surface of water supply.

Furthermore, the inner wall of the spiral membrane pipe is provided with a water spray nozzle, the opening of the water spray nozzle is inclined downwards, the included angle between the water spray nozzle and the inner wall of the spiral membrane pipe is smaller than 90 degrees, water is sprayed out through the spiral membrane pipe and flows downwards along the inner wall of the oxygen removal pipe in a clinging and spiral mode, and the water flow clings to the inner wall of the oxygen removal pipe to form a thin water film to flow downwards due to the fact that the water flow descends in a spiral mode and has a certain centrifugal force, and therefore the water.

Furthermore, the inner wall of the stainless steel sliding bucket is of an arc-shaped structure, the surface of the stainless steel sliding bucket is of a hollow structure, water flow slides down through the inner wall of the oxygen removal pipe to reach the inner wall of the stainless steel sliding bucket and slides down, and the water flow gradually passes through the stainless steel sliding bucket and is fully contacted with steam below to remove oxygen.

Furthermore, a plurality of groups of air injection holes are formed in the upper end surfaces of the upper steam distribution pipe and the lower steam distribution pipe, the right end surfaces of the upper steam distribution pipe and the lower steam distribution pipe are connected with steam introduction nozzles, the upper steam distribution pipe and the lower steam distribution pipe are connected with an external steam source through the steam introduction nozzles, the upper steam distribution pipe mainly plays a role in supplementing and carrying steam, and the lower steam distribution pipe mainly blows steam into the filler liquid-gas net.

Furthermore, the inside of the filler liquid gas net is composed of a special stainless steel wire net with a certain height, and the feed water is fully contacted with the steam at the lower side, heated to the saturation temperature and deeply deoxidized.

Further, electric heating wire is equipped with many, and many electric heating wire are for moving about freely and quickly the cross arrangement, electric heating wire is connected with external power source through the wire, through the electric heating wire of initial stage switch-on, reduces steam calorific loss steam, prevents that steam from meeting the phenomenon of cold rapid condensation.

Furthermore, the water spraying grate is made of a plurality of layers of angular steel which are arranged in a staggered mode, water which is roughly deoxidized through the rotary membrane tubes is distributed on the water spraying grate for the second time, and the water falls onto a filler liquid-air net arranged below the water spraying grate in a uniform rain-drenching mode.

The invention has the beneficial effects that: according to the internal rotating film type deaerator, because the water inlet pipe, the water supply tank, the rotating film pipe, the deaerating pipe, the stainless steel sliding hopper, the upper steam distribution pipe, the electric heating wire, the water spraying grate, the filler liquid air net and the lower steam distribution pipe are added, oxygen in water can be fully removed through the design, the deoxidizing degree is further improved, the problems that an original rotating film type deaerator is poor in deaerating structure and low in deaerating efficiency are solved, and the deaerating effect is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of an internal rotating film deaerator in accordance with the present invention;

FIG. 2 is a front sectional view of an internal rotating film deaerating mechanism of an internal rotating film deaerator in accordance with the present invention;

in the figure: 1-shell, 2-barometer, 3-pressure limiting valve, 4-internal rotating membrane deoxygenation mechanism, 5-water collecting tank, 41-water inlet pipe, 42-water supply tank, 43-rotating membrane pipe, 44-stainless steel sliding hopper, 45-upper steam distribution pipe, 46-electric heating wire, 47-water spraying grate, 48-material filling liquid air net and 49-lower steam distribution pipe.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1-2, the present invention provides a technical solution: an internal rotating film type deaerator comprises a shell 1 and a water collecting tank 5, wherein the water collecting tank 5 is arranged at the bottom of the shell 1, the upper end part of the shell 1 is provided with a pressure limiting valve 3, the side wall of the shell 1 is provided with a barometer 2, a water supply tank 42 and a spiral membrane pipe 43 are arranged in the shell 1, a water inlet pipe 41 is arranged in the water supply tank 42, the end part of the water inlet pipe 41 penetrates through the wall of the shell 1 to be connected with water inlet equipment, a water drop-shaped oxygen removing pipe 50 is arranged at the middle position of the water supply tank 42, the rotary membrane pipe 43 is fixed on the outer wall of the oxygen removing pipe 50, and the joint of the side wall of the water supply tank 42 and the oxygen removal pipe 50 is communicated through a rotary film pipe 43, the bottom of the oxygen removal pipe 50 is provided with a stainless steel sliding bucket 44, an upper steam distribution pipe 45, an electric heating wire 46, a water spraying grate 47, a filler liquid air net 48 and a lower steam distribution pipe 49 are sequentially arranged under the stainless steel sliding hopper 44.

As an embodiment of the present invention: the method comprises the steps of firstly connecting an upper steam pipe 45 and a lower steam pipe 49 with an external steam source through a guiding nozzle on the right end face, discharging steam into the lower steam pipe 49 and penetrating through a material filling liquid air net 48 and a water spraying grate 47 through the lower steam pipe 49, fully contacting the water supplied through the material filling liquid air net 48 with the steam, heating to a saturation temperature and carrying out deep deoxidization, further heating the steam penetrating through the material filling liquid air net 48 and the water spraying grate 47 by electrifying an electric heating wire 46 to prevent the steam from being supercooled and condensed, directly discharging the steam into a water supply tank 42 through the upper steam pipe 45, fully preheating the interior of a shell 1 after a period of time, and injecting water to remove the deoxidization when a barometer 2 displays the air pressure of 1.2 MPa.

As an embodiment of the present invention: the left end of the water inlet pipe 41 is connected with an external water pump, a high-pressure water source is extruded into the water supply tank 42 by the water pump, water flows through the rotary film pipe 43 and is jetted into the oxygen removal pipe 50 along the inner wall side, because the inner wall of the rotary film pipe 43 is provided with the water spray nozzle, the opening of the water spray nozzle is inclined downwards, the water supply is sprayed out through the rotary film pipe 43 and flows downwards along the inner wall of the oxygen removal pipe 50 in a spiral way, the water flow flows spirally so as to have certain centrifugal force, the water flow is tightly attached to the inner wall of the oxygen removal pipe 50 to form a thin downward flowing water film which can be fully contacted with steam, because the inner wall of the oxygen removal pipe 50 is also provided with spiral flow guide lines, the steam spirally rises along the spiral flow guide lines, the retention time of the steam on the inner side of the rotary film pipe 43 is prolonged, the steam is fully contacted with the surface of the water supply, then the, then the water flow falls to the water spraying grate 47, the water after being roughly deoxidized by the rotary membrane tube 43 goes up the water spraying grate 47 for secondary distribution, falls on the filler liquid air net 48 arranged below the water spraying grate in a uniform rain-drenching shape, and finally falls into the water collecting tank 5, the deoxidization process is completed, and the deoxidization degree is higher.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An internal rotation film type deaerator is characterized in that: including casing and header tank, the header tank sets up the bottom of casing, casing upper end is provided with the pressure-limiting valve, be equipped with the barometer on the lateral wall of casing, the inside of casing is equipped with feed tank and cyclone tube, be equipped with the inlet tube in the feed tank, the tip of inlet tube passes the casing wall connection water installations, feed tank intermediate position department is equipped with the water droplet shape and removes oxygen pipe, the cyclone tube is fixed on removing the outer wall of oxygen pipe, just feed tank lateral wall and deoxidization union coupling switch on through the cyclone tube, the bottom that removes oxygen pipe is equipped with the stainless steel sliding bucket, be equipped with steam distribution pipe, electric heating wire, trickle grate filler liquid net and steam distribution pipe down under the stainless steel sliding bucket in proper order.

2. The internal rotating film type deaerator as claimed in claim 1, wherein: the pressure limiting value of the pressure limiting valve is 1.2MPa, the temperature of the steam is kept at about 105 ℃ under the pressure which is 0.2MPa higher than the external atmospheric pressure in the shell, and the oxygen in the feed water is sufficiently removed by contacting with the steam.

3. The internal rotating film type deaerator as claimed in claim 1, wherein: the inner wall of the deoxidizing pipe is provided with spiral flow guide grains, and the deoxidizing pipe forms an inverted funnel-shaped air outlet structure.

4. The internal rotating film type deaerator as claimed in claim 1, wherein: the inner wall of the rotary film pipe is provided with a water spray nozzle, and the opening of the water spray nozzle is inclined downwards.

5. The internal rotating film type deaerator as claimed in claim 1, wherein: the lower surface of the stainless steel sliding bucket is of an arc structure and is of a hollow structure.

6. The internal rotating film type deaerator as claimed in claim 1, wherein: the upper walls of the upper steam distribution pipe and the lower steam distribution pipe are provided with a plurality of groups of air injection holes, and the end surfaces of the upper steam distribution pipe and the lower steam distribution pipe are connected with steam introduction nozzles.

7. The internal rotating film type deaerator as claimed in claim 1, wherein: the filler liquid air net is a stainless steel wire net.

8. The internal rotating film type deaerator as claimed in claim 1, wherein: the electric heating wires are arranged in a plurality of criss-cross arrangement and are connected with an external power supply through wires.

9. The internal rotating film type deaerator as claimed in claim 1, wherein: the water spraying grate is made of a plurality of layers of angular steel which are arranged in a staggered mode.