CN210861052U

CN210861052U - Thermal deaerator

Info

Publication number: CN210861052U
Application number: CN201921917490.6U
Authority: CN
Inventors: 刘红俊
Original assignee: Tianjin Fusite Pressure Vessel Co ltd
Current assignee: Tianjin Fusite Pressure Vessel Co ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2020-06-26
Anticipated expiration: 2029-11-07

Abstract

The utility model provides a heating power oxygen-eliminating device, including deoxidization head and water tank, the deoxidization head sets firmly in the water tank top, is linked together through a plurality of steam spray tubes between the two, deoxidization top of the head portion is equipped with the blast pipe, the inside top-down of deoxidization head is equipped with spray tube, water grate and liquid steam net in proper order, the bottom of water tank is equipped with the outlet pipe, is equipped with the steam drum in the water tank, the upper end of steam drum is the opening, is equipped with the steam pipe that communicates with the water tank outside in the opening, the lower part of steam drum passes through water pipe and deoxidization head bottom intercommunication. This kind of thermal power oxygen-eliminating device adopts the oxygen-eliminating device structure that has the hair style, and water spills behind from the top of deoxidization head, successively through deoxidization head deoxidization and steam drum deoxidization, two steps deoxidization processes make the feedwater deoxidization more thorough, are equipped with the steam drum in the water tank, and the effect of deoxidization not only can be played to the steam of exhaust in the steam drum, can play the effect of heat preservation pressurize to the water tank simultaneously.

Description

Thermal deaerator

Technical Field

The utility model relates to a deaerator especially relates to a heating power deaerator.

Background

The deaerator is the necessary equipment in the boiler system, its main function lies in reducing the oxygen content in the boiler working water, make it reach the standard requirement, prevent the apparatus from corroding and conducting heat to worsen, in order to guarantee the boiler, turboset and metal part of the whole system can be operated normally, the deaerator of heating power is the most commonly used deaerating equipment of boiler at present, its principle is, when the water is heated by the constant pressure, the evaporation capacity of the vapor is increased continuously, make the partial pressure of the vapor on the liquid level increase, the partial pressure of other gases is reduced continuously, discharge in time after escaping from the water, when the water is heated to the saturation temperature under the deaerator pressure, the pressure of the vapor will be close to the full pressure on the water surface, the partial pressure of other gases on the water surface approaches zero at this moment, so the gas dissolved in the water will escape from the water and is removed, the flow path of water in the deaerator is longer, the contact with the vapor is more abundant, the better the oxygen scavenging effect on water.

Disclosure of Invention

In view of this, the present invention provides a thermal deaerator to overcome the above-mentioned drawbacks in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a thermal deaerator comprises a deaerating head and a water tank, wherein the deaerating head is fixedly arranged above the water tank and is communicated with the water tank through a plurality of steam spray pipes;

an overflow pipe is arranged in the water tank, and the height of the overflow pipe is lower than that of the steam cylinder;

the water tank is internally provided with a high pressure water drain pipe and a reboiling pipe, the height of the high pressure water drain pipe is higher than that of the reboiling pipe, the height of the high pressure water drain pipe and that of the reboiling pipe are both lower than that of the overflow pipe, and a plurality of jet holes are arranged on the high pressure water drain pipe and the reboiling pipe.

Furthermore, the spray pipe is a rotary membrane spray pipe, one end of the rotary membrane spray pipe is provided with a water inlet pipe and a blow-off pipe, and the other end of the rotary membrane spray pipe is provided with a water replenishing pipe.

Further, the liquid-steam net is a stainless steel flat wire net.

Furthermore, a steam-water separator is arranged at the lower part of the exhaust pipe.

Furthermore, a flow baffle is arranged at the lower part of the liquid-steam net and is positioned above the opening of the water pipe.

Furthermore, the upper end of the steam spray pipe is provided with a buckle cover.

Furthermore, a spray head is arranged at the lower end of the steam pipe, and a plurality of spray holes are formed in the spray head.

Furthermore, the upper part of the steam cylinder is provided with a separation net.

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

(1) this thermal power deaerator adopts the deaerator structure that has the hair style, and water is spilled after the top of deoxidization head, successively through deoxidization of deoxidization head and steam drum deoxidization, two steps deoxidization processes, makes the feedwater deoxidization more thorough.

(2) This heating power deaerator is equipped with a steam section of thick bamboo in the water tank, and the effect of deoxidization not only is played to the steam of exhaust in the steam section of thick bamboo, can play the effect of heat preservation pressurize to the water tank simultaneously.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of the overall structure of a thermal deaerator in accordance with the present invention;

fig. 2 is a schematic diagram of a structure of a thermal deaerator deoxidizing head according to the present invention.

Description of reference numerals:

1-an oxygen removal head; 11-a spinning nozzle; 111-a water inlet pipe; 112-a sewage draining pipe; 113-a water replenishing pipe; 12-water perforaled strainer; 13-heat supplementing pipe; 14-liquid vapor net; 15-steam spray pipes; 151-buckle cover; 16-an exhaust pipe; 161-steam-water separator; 17-a safety valve; 18-a flow baffle; 2-a water tank; 21-a steam drum; 211-a showerhead; 212-a screen; 213-a water pipe; 214-steam tubes; 22-high plus drain pipe; 23-reboiling tubes; 24-an overflow tube; 25-a water outlet pipe; 26-support.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following examples with reference to the accompanying drawings:

the utility model provides a thermal deaerator, includes deoxidization head 1 and water tank 2, deoxidization head 1 sets firmly in 2 tops of water tank, is linked together through a plurality of steam spray pipes 15 between the two, deoxidization head 1 top is equipped with blast pipe 16, the lower part of blast pipe 16 is equipped with catch water 161 for hold back the moisture of smuggleing secretly among the exhaust gas, deoxidization head 1 inside top-down is equipped with rotary film spray pipe 11, water grate 12 and liquid steam net 14 in proper order, the one end of rotary film spray pipe 11 is equipped with inlet tube 111 and blow off pipe 112, and the other end is equipped with moisturizing pipe 113, and the condensate water flows into behind the rotary film spray pipe 11 through the jet hole discharge above that from inlet tube 111, falls to water grate 12 and liquid steam net 14 in proper order, falls the in-process and the steam spray pipe 15 interior exhaust steam heat transfer deoxidization of whereabouts, then flows in deoxid.

The liquid-vapor net 14 is a stainless steel flat wire net, the specific surface area is increased, the heat transfer efficiency is improved, the flow baffle plate 18 is arranged at the lower part of the liquid-vapor net 14, the flow baffle plate 18 is positioned above the opening of the water pipe 213, and the phenomenon that water falling from the liquid-vapor net 14 is directly injected into the pipe opening of the water pipe 213 to cause bubbling and influence on the water flow delivery is prevented.

The upper end of the steam spray pipe 15 is provided with a buckle cover 151, so that water flow falling from the upper part is prevented from entering the pipe orifice of the steam spray pipe 15 and directly flowing into the water tank 2.

The bottom of the water tank 2 is provided with a water outlet pipe 25 and a support 26, a steam cylinder 21 is arranged in the water tank 2, the upper end of the steam cylinder 21 is provided with an opening, a steam pipe 214 communicated with the outside of the water tank 2 is arranged in the opening, the lower part of the steam cylinder 21 is communicated with the bottom of the oxygen removal head 1 through a water pipe 213, the lower end of the steam pipe 214 is provided with a spray head 211, and the spray head 211 is provided with a plurality of spray holes to increase the contact area of steam and water;

in steam drum 21, the water that comes from deoxidization head 1 passes through water pipe 213 and injects into it, and steam is simultaneously injected steam drum 21 from steam pipe 214, carries out further deoxidization to the water in steam drum 21, and exhaust oxygen gets into deoxidization head 1 along with steam through steam spray tube 15 in, and water tank 2 upper portion is full of steam simultaneously, helps keeping the temperature and the pressure in the water tank 2, and the water through secondary deoxidization overflows to water tank 2 through steam drum 21, the upper portion of steam drum 21 is equipped with separates net 212, prevents that the water in the steam drum 21 from outwards splashing because of the turbulent flow.

An overflow pipe 24 is arranged in the water tank 2 to prevent overpressure of the deaerator or water inflow of a steam turbine caused by overhigh water level in the deaerator, and the height of the overflow pipe 24 is lower than that of the steam drum 21 to ensure that condensed water overflows into the water tank 2 after being deaerated in the steam drum 21 in the second step;

a high pressure water drainage pipe 22 and a reboiling pipe 23 are arranged in the water tank 2, the height of the high pressure water drainage pipe 22 is higher than that of the reboiling pipe 23, the height of the high pressure water drainage pipe and that of the reboiling pipe are both lower than that of the overflow pipe 24, and a plurality of spray holes are arranged on the high pressure water drainage pipe and the reboiling pipe.

The high pressure water drain pipe 22 is used for injecting high pressure water drain into the deaerator for flash evaporation, and has the functions of a reboiling device, firstly, when the unit is started, cold water is heated to the saturation temperature of the deaerator under the working pressure, and the speed of water supply and deaerating is accelerated; and secondly, if the oxygen content of the feed water is unqualified in normal operation, auxiliary steam can be introduced from the pipe to ensure that the water in the deaerator is reboiled to play a role in assisting in removing oxygen and other non-condensable gases in the feed water, so that the position is lower.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The thermal deaerator comprises a deaerator head (1) and a water tank (2), and is characterized in that the deaerator head (1) is fixedly arranged above the water tank (2) and is communicated with the water tank (2) through a plurality of steam spray pipes (15), an exhaust pipe (16) is arranged at the top of the deaerator head (1), the spray pipes, a water grate (12) and a liquid-steam net (14) are sequentially arranged inside the deaerator head (1) from top to bottom, a water outlet pipe (25) is arranged at the bottom of the water tank (2), a steam cylinder (21) is arranged in the water tank (2), the upper end of the steam cylinder (21) is an opening, a steam pipe (214) communicated with the outside of the water tank (2) is arranged in the opening, and the lower part of the steam cylinder (21) is communicated with the bottom of the;

an overflow pipe (24) is arranged in the water tank (2), and the height of the overflow pipe (24) is lower than that of the steam drum (21);

the water tank (2) is internally provided with a high pressure water drainage pipe (22) and a reboiling pipe (23), the height of the high pressure water drainage pipe (22) is higher than that of the reboiling pipe (23), the height of the high pressure water drainage pipe and that of the reboiling pipe are both lower than that of the overflow pipe (24), and a plurality of spray holes are arranged on the high pressure water drainage pipe and the reboiling pipe.

2. A thermal deaerator as claimed in claim 1, wherein: the spray pipe is a rotary membrane spray pipe (11), one end of the rotary membrane spray pipe (11) is provided with a water inlet pipe (111) and a sewage discharge pipe (112), and the other end of the rotary membrane spray pipe is provided with a water replenishing pipe (113).

3. A thermal deaerator as claimed in claim 1, wherein: the liquid-steam net (14) is a stainless steel flat wire net.

4. A thermal deaerator as claimed in claim 1, wherein: and a steam-water separator (161) is arranged at the lower part of the exhaust pipe (16).

5. A thermal deaerator as claimed in claim 1, wherein: the lower part of the liquid-vapor net (14) is provided with a flow baffle (18), and the flow baffle (18) is positioned above the opening of the water pipe (213).

6. A thermal deaerator as claimed in claim 1, wherein: the upper end of the steam spray pipe (15) is provided with a buckle cover (151).

7. A thermal deaerator as claimed in claim 1, wherein: the lower end of the steam pipe (214) is provided with a spray head (211), and a plurality of spray holes are formed in the spray head (211).

8. A thermal deaerator as claimed in claim 1, wherein: the upper part of the steam cylinder (21) is provided with a separation net (212).