CN2713304Y

CN2713304Y - Built-in deaerator

Info

Publication number: CN2713304Y
Application number: CN 200420064753
Authority: CN
Inventors: 刘颖超; 刘双全
Original assignee: TAIAN LIDE CAN MANUFACTURE CO Ltd
Current assignee: TAIAN LIDE CAN MANUFACTURE CO Ltd
Priority date: 2004-06-04
Filing date: 2004-06-04
Publication date: 2005-07-27
Anticipated expiration: 2014-06-04

Abstract

The utility model discloses a built-in deaerator. The inner wall of one end of a deaerating water tank is welded with a cylindrical spray chamber, and the upper part of the cylindrical spray chamber is welded with the water inlet pipe on the water tank, and both sides of the water inlet pipe are equipped with the non-condensing gas pipes which deaerate O 2 and CO 2, etc.; the power part of the cylindrical spray chamber is equipped with a steam spray pipe assembly; the seal head of the other end of the deaerating water tank is equipped with a high thinness water pipe; the lower part of the water tank is equipped with the water drain pipe and the blow-off pipe of deaerated water. When the load of the built-in deaerator varies between 10 %-110 %, the oxygen content of deaerated water can be dropped below 5 mu g / L; the discharge loss is small and a built-out residual heat chiller is not needed. Simultaneously, the shock resisting performance is good since the height of equipment is lowered, and the installation is convenient.

Description

Built-in deaerator

Technical field

The utility model relates to the improvement of a kind of power plant and the used oxygen-eliminating device of Industrial Boiler.Be a kind of built-in deaerator specifically.

Background technology

All be furnished with oxygen-eliminating device in the power plant, oxygen-eliminating device mainly contains two kinds in Li Ta, tower for sleeping in from the appearance at present.The shortcoming of these oxygen-eliminating devices is the outer form height of equipment, poor seismic behavior, big, poor, the construction investment height of deaerating effect of operation noise.

For overcome Li Ta, the shortcoming of the two kinds of oxygen-eliminating devices of tower that crouch, a kind of architecture advances is proposed built-in deaerator, remove the upright tower or the Wo Ta of oxygen-eliminating device, reduce the height of oxygen-eliminating device profile, simple in structure, anti-seismic performance is good; Widen deoxygenation load change scope, reduce the water outlet oxygen content, energy-saving effect is remarkable; Because of removing Li Ta or Wo Ta, the oxygen-eliminating device height reduces, and saves steel.

Summary of the invention

The purpose of this utility model is realized by following technical scheme: built-in deaerator is to be welded with a cylindrical shape spray chamber on the inwall of deaerated water upper box part one end, and weld mutually with water inlet pipe on the water tank on the top of cylindrical shape spray chamber, and row O is installed in the water inlet pipe both sides ₂, CO ₂Deng the incondensable gas pipe, the steam jet pipe assembly is equipped with in the below of cylindrical shape spray chamber; Height is installed on the end socket of the deoxygenation water tank other end is added drain pipe; The deaerated water lower box part is installed blow-off pipe, deaerated water outlet pipe.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: be made up of deaerator storage tank, water inlet pipe and blow-off pipe, on the inwall of deaerator storage tank top one end, be welded with a cylindrical shape spray chamber, the top of cylindrical shape spray chamber is connected with water inlet pipe on the water tank, and the water inlet pipe both sides are equipped with row O ₂, CO ₂The incondensable gas discharge pipe; The steam jet pipe assembly is equipped with in the below of cylindrical shape spray chamber; On the end socket of the deaerator storage tank other end, height is installed and adds drain pipe; The bottom of deaerator storage tank is equipped with deaerated water outlet pipe and blow-off pipe.

In the described cylindrical shape spray chamber that is welded into steel plate, welding is two-layer tube sheet up and down, and upper perforated plate and water inlet pipe join, two kinds of sparge pipes of welding between the tube sheet, water inlet pipe are a type pipe down, and other is a b type pipe, be furnished with the water spray micropore on the sparge pipe, also be welded with communicating pipe between the tube sheet.

Described steam jet pipe assembly is responsible for the steam distribution arm by the inverted T shape of admission and is formed, and is furnished with the steam distribution arm, uniform micropore on the steam distribution arm on inverted T shape is responsible for.

Feedwater deaeration and heat and mass transfer process are all finished in water tank, and deaerated water is through the deoxygenation in two stages:

Phase I: water enters in the cylindrical shape spray chamber on deaerator storage tank top from water inlet pipe, water in the cylindrical shape spray chamber enters in the pipe by the micropore on a, two kinds of sparge pipes of b type, descend along the inwall eddy flow, carry out heat and mass with the steam that sprays from the water surface, after the water that flows downward flows out sparge pipe, the steam heat and mass that overflows in continuation and the water is finished the phase I deoxygenation until falling into the water.Condensate water on the cylindrical shape spray chamber flowed downward through communicating pipe, reached deaerating effect with the steam heat-exchanging that rises, and prevented cylindrical shape spray chamber top water.

Second stage: after steam enters the inverted T shape pipe from steam inlet, enter the steam distribution arm, micropore on the steam distribution arm sprays into steam in the oxygen-eliminating device water, formation is around the eddy flow of steam distribution arm rotation, the eddy flow that adjacent two steam distribution arms form, make the water disorder in the water tank, trace oxygen enters steam and takes the water surface out of in the water, finishes the second stage deoxygenation.

The water of deoxygenation flows out from the deaerated water outlet pipe, and height adds and hydrophobicly adds drain pipe by height and flow into, and sewage is discharged by sewage pipe.O ₂, CO ₂Through the incondensable gas discharge pipe, enter atmosphere Deng incondensable gas.

The utility model has the advantages that: simple in structure; When load changes between 10%～110%, the deaerated water oxygen content is dropped to below the 5 μ g/L; Discharge loss is little, does not need external waste heat cooler.Simultaneously, anti-seismic performance is good because having reduced device height, and is easy for installation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a kind of structure chart of built-in oxygen-eliminating device;

Fig. 2 is that the A-A of Fig. 1 is to view;

Fig. 3 is a spray chamber structure enlarged drawing.

Among the figure: 1. deaerator storage tank; 2. cylindrical shape spray chamber; 3. water inlet pipe; 4. steam inlet; 5 start steam inlet; 6 end sockets; 7. height adds drain pipe; 8. water level meter; 9. deaerated water outlet pipe; 10. inverted T shape pipe; 11. steam distribution arm; 12. sewage pipe; 13. incondensable gas discharge pipe; 14. sparge pipe; 15. communicating pipe.

The specific embodiment

Feedwater deaeration and heat and mass transfer process are all finished in water tank, and deaerated water is through two stage deoxygenations:

In Fig. 1, water enters in the cylindrical shape spray chamber (2) on deaerator storage tank (1) top from water inlet pipe (3), water in the cylindrical shape spray chamber (2) enters in the pipe to descend along the inwall eddy flow by the micropore on a, the two kinds of sparge pipes of b type (14), carry out heat and mass with the steam that sprays from the water surface, after the water that flows downward flows out sparge pipe, the steam heat and mass that overflows in continuation and the water is finished the phase I deoxygenation until falling into the water.Condensate water on the cylindrical shape spray chamber (2) flowed downward through communicating pipe (15), reached deaerating effect with the steam heat-exchanging that rises, and prevented cylindrical shape spray chamber (2) top water.

After steam enters inverted T shape pipe (10) from steam inlet (4), enter steam distribution arm (11), micropore on the steam distribution arm (11) sprays into steam in the oxygen-eliminating device water, formation is around the eddy flow of steam distribution arm rotation, the eddy flow that adjacent two steam distribution arms form, make the water disorder in the water tank, trace oxygen enters steam and takes the water surface out of in the water, finishes the second stage deoxygenation.

The water of deoxygenation flows out from deaerated water outlet pipe (9), and height adds and hydrophobicly adds drain pipe (7) by height and flow into, and sewage is discharged by sewage pipe (12); O ₂, CO ₂Through incondensable gas discharge pipe (13), enter atmosphere Deng incondensable gas.

Claims

1. built-in deaerator, form by deaerator storage tank (1), water inlet pipe (3) and blow-off pipe (12), it is characterized in that: on the inwall of deaerator storage tank (1) top one end, be welded with a cylindrical shape spray chamber (2), the top of cylindrical shape spray chamber (2) is connected with water inlet pipe (3) on the water tank, and water inlet pipe (3) both sides are equipped with row O ₂, CO ₂Incondensable gas discharge pipe (13); The steam jet pipe assembly is equipped with in the below of cylindrical shape spray chamber (2); On the end socket (6) of deaerator storage tank (1) other end, height is installed and adds drain pipe (7); The bottom of deaerator storage tank (1) is equipped with deaerated water outlet pipe (9) and blow-off pipe (12).

2. built-in deaerator according to claim 1, it is characterized in that: in the described cylindrical shape spray chamber (2) that is welded into steel plate, welding is two-layer tube sheet up and down, upper perforated plate and water inlet pipe (3) join, welding two kinds of sparge pipes (14) between the tube sheet, water inlet pipe (3) are a type pipe down, and other is a b type pipe, sparge pipe is furnished with the water spray micropore on (14), also is welded with communicating pipe (15) between the tube sheet.

3. built-in deaerator according to claim 1, it is characterized in that: described steam jet pipe assembly is responsible for (10) by the inverted T shape of admission and is formed with steam distribution arm (11), on the inverted T shape person in charge (10), be furnished with steam distribution arm (11), go up uniform micropore at steam distribution arm (11).