CN211502742U - Exhaust steam recycling system of boiler deaerator - Google Patents
Exhaust steam recycling system of boiler deaerator Download PDFInfo
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- CN211502742U CN211502742U CN201922450230.9U CN201922450230U CN211502742U CN 211502742 U CN211502742 U CN 211502742U CN 201922450230 U CN201922450230 U CN 201922450230U CN 211502742 U CN211502742 U CN 211502742U
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- boiler deaerator
- deaerator
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Abstract
The utility model discloses a boiler deaerator exhaust steam recycling system, which comprises a boiler deaerator (1), wherein the boiler deaerator (1) is connected with an exhaust steam recycling mixer (2), the input end of the exhaust steam recycling mixer (2) is also connected with a demineralized water source (3), the output end of the exhaust steam recycling mixer (2) is connected with a gas-liquid separation device (4), and the gas-liquid separation device (4) is respectively connected with an outlet pipe (5) and a return steam trap (6); and a safety pipeline (7) is connected between the boiler deaerator (1) and the exhaust steam recovery mixer (2). The utility model has the advantages of can carry out recycle to the exhaust steam of boiler oxygen-eliminating device, reach energy saving and emission reduction's purpose, exhaust steam recovery is effectual, and the high-usage.
Description
Technical Field
The utility model relates to an exhaust steam recycle system, especially a boiler oxygen-eliminating device exhaust steam recycle system.
Background
With the high-speed development of global economy, people consume more and more various non-renewable mineral energy sources, under the background, low-carbon economy, namely, efficient utilization of energy sources and development of clean energy sources become the focus of global attention, in some enterprises which utilize clean coal energy to convert into heat and electric power, the utilization of waste heat of a boiler is an important measure for saving energy sources, the deaerator of the boiler is equipment which adopts a steam heating mode to perform thermal deoxidization, a large amount of dead steam can be generated in the working process, the dead steam is generally directly discharged to the atmosphere or is led to cold sources such as river water, intake water and the like at present, a large amount of energy contained in the dead steam cannot be well utilized, and thermal pollution can be caused to the environment. Therefore, a waste steam recycling system of the boiler deaerator is urgently needed to recycle the waste steam so as to achieve the purposes of energy conservation and emission reduction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a boiler oxygen-eliminating device exhaust steam recycle system. The waste steam recovery device has the advantages that waste steam of the boiler deaerator can be recovered and utilized, the purposes of energy conservation and emission reduction are achieved, the waste steam recovery effect is good, and the utilization rate is high.
The technical scheme of the utility model: the exhaust steam recycling system of the boiler deaerator comprises the boiler deaerator, the boiler deaerator is connected with an exhaust steam recycling mixer, the input end of the exhaust steam recycling mixer is also connected with a demineralized water source, the output end of the exhaust steam recycling mixer is connected with a gas-liquid separation device, and the gas-liquid separation device is respectively connected with a gas outlet pipe and a drain return box; and a safety pipeline is connected between the boiler deaerator and the exhaust steam recovery mixer.
In the exhaust steam recycling system of the boiler deaerator, the safety pipeline comprises a first check valve arranged on a connecting pipeline of the boiler deaerator and the exhaust steam recycling mixer, two ends of the first check valve are connected in parallel with a back suction pipeline, two ends of the back suction pipeline are respectively connected with a second check valve and a third check valve, and a release pipeline is led out of the back suction pipeline.
In the exhaust steam recycling system of the deaerator of the boiler, the exhaust steam recycling mixer comprises a cylindrical shell, a water inlet pipe and a gas inlet pipe which extend towards the inside of the cylindrical shell are connected to the bottom surface of the same side of the cylindrical shell respectively, and a flow outlet pipe is connected to the bottom surface of the other side of the cylindrical shell.
In the exhaust steam recycling system of the boiler deaerator, the air inlet pipe is inserted from the center of the bottom surface of the cylindrical shell, and the air inlet pipe is provided with a plurality of air outlet holes which are spirally distributed on the pipe wall of the cylindrical air inlet pipe along the length direction of the air inlet pipe.
In the exhaust steam recycling system of the boiler deaerator, the number of the water inlet pipes is two, and the two water inlet pipes are respectively arranged on two sides of the air inlet pipe.
In the exhaust steam recycling system of the boiler deaerator, the length of the air inlet pipe is 1/2-3/4 of the length of the column body of the cylindrical shell.
Compared with the prior art, the utility model realizes the mixing of the exhaust steam of the boiler deaerator and the boiler desalted water at the exhaust steam recovery mixer through the pipeline, and the boiler desalted water is heated by the high-temperature exhaust steam, thereby improving the water inlet temperature of the boiler, saving the fire coal and achieving the purposes of energy saving and emission reduction; furthermore, a safety pipeline is connected between the boiler deaerator and the exhaust steam recovery mixer, the safety pipeline can guarantee the safety of the system in the working process, when the exhaust steam recovery mixer breaks down, exhaust steam can be released through the safety pipeline, and the deaerator is prevented from being damaged due to the air pressure problem.
Furthermore, the safety pipeline comprises a first one-way valve arranged on a connecting pipeline of the boiler deaerator and the exhaust steam recovery mixer, two ends of the first one-way valve are connected with a back suction pipeline in parallel, two ends of the back suction pipeline are respectively connected with a second one-way valve and a third one-way valve, a release pipeline is led out from the back suction pipeline, when the boiler deaerator and exhaust steam recovery mixer works normally, the first one-way valve is opened, the second one-way valve and the third one-way valve are closed, exhaust steam of the boiler deaerator enters the exhaust steam recovery mixer through the first one-way valve to be mixed, when the exhaust steam recovery mixer breaks down, the first one-way valve is closed, the second one-way valve and the third one-way valve are opened, exhaust steam of the boiler deaerator passes through the second one-way valve and is finally discharged from the release pipeline, the third one-way valve and the back suction pipeline can effectively deal with back suction of demineralized water of.
Furthermore, the exhaust steam recovery mixer comprises a cylindrical shell, wherein a water inlet pipe and a water inlet pipe which extend towards the inside of the cylindrical shell are respectively connected to the bottom surface of the same side of the cylindrical shell, the air inlet and the water inlet at the same side can slow down the convection of air and liquid in the cylindrical shell, the pressure in the cylindrical shell is prevented from being too high, and a flow outlet pipe is connected to the bottom surface of the other side of the cylindrical shell and is used for outflow; furthermore, the intake pipe is inserted from the center of cylindricality casing bottom surface, and the demineralized water of being convenient for fully wraps up the heat transfer with the exhaust steam, is equipped with a plurality of in the intake pipe along intake pipe length direction and be the spiral and encircle the venthole that distributes on cylinder intake pipe wall, gives vent to anger simultaneously to each position in the cylindricality casing for the decentralization of giving vent to anger, with the air mass dispersion back, the demineralized water of being convenient for fully wraps up the heat transfer with the exhaust steam, it is also higher to compare in the single mouthful stability of giving vent to.
In addition, the number of the water inlet pipes is two, and the two water inlet pipes are respectively arranged on two sides of the air inlet pipe, so that the desalted water can fully wrap the dead steam for heat exchange; the length of the air inlet pipe is 1/2-3/4 of the length of the column body of the cylindrical shell, the stroke of the air outlet section is long, and air outlet is more dispersed.
To sum up, the utility model has the advantages of can carry out recycle to the exhaust steam of boiler oxygen-eliminating device, reach energy saving and emission reduction's purpose, exhaust steam recovery is effectual, and the high-usage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the internal structure of the exhaust steam recovery mixer.
Reference numerals: 1-a boiler deaerator, 2-an exhaust steam recovery mixer, 3-a demineralized water source, 4-a gas-liquid separation device, 5-an air outlet pipe, 6-a drain box, 7-a safety pipeline, 21-a cylindrical shell, 22-an water inlet pipe, 23-an air inlet pipe, 24-an outlet pipe, 71-a first one-way valve, 72-a suck-back pipeline, 73-a second one-way valve, 74-a third one-way valve and 75-a release pipeline.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Example (b): the exhaust steam recycling system of the boiler deaerator is structurally shown in fig. 1 and fig. 2 and comprises a boiler deaerator 1, exhaust steam is output from the boiler deaerator 1, the boiler deaerator 1 is connected with an exhaust steam recycling mixer 2, the input end of the exhaust steam recycling mixer 2 is also connected with a demineralized water source 3, the exhaust steam recycling mixer 2 is mixed with demineralized water of a boiler, the demineralized water of the boiler is heated by high-temperature exhaust steam, so that the water inlet temperature of the boiler is increased, the output end of the exhaust steam recycling mixer 2 is connected with a gas-liquid separation device 4, the gas-liquid separation device 4 is respectively connected with a gas outlet pipe 5 and a drain return box 6, and gas and liquid after waste heat utilization are separated; be connected with safety line 7 between boiler oxygen-eliminating device 1 and the exhaust steam recovery blender 2, the security of guarantee system in the course of the work, when exhaust steam recovery blender 2 broke down, can release the exhaust steam through safety line 7, avoid the oxygen-eliminating device to cause the damage because of the atmospheric pressure problem.
The safety pipeline 7 comprises a first one-way valve 71 arranged on a connecting pipeline of the boiler deaerator 1 and the exhaust steam recovery mixer 2, two ends of the first one-way valve 71 are connected with a back suction pipeline 72 in parallel, two ends of the back suction pipeline 72 are respectively connected with a second one-way valve 73 and a third one-way valve 74, and a release pipeline 75 is led out of the back suction pipeline 72.
The exhaust steam recycling mixer 2 comprises a cylindrical shell 21, a water inlet pipe 22 and a water inlet pipe 23 which extend towards the inside of the cylindrical shell 21 are connected to the bottom surface of the same side of the cylindrical shell 21 respectively, the air inlet pipe and the water inlet pipe are connected to the same side, the convection of gas and liquid in the cylindrical shell 21 can be slowed down by the air inlet and the water inlet of the same side, the pressure in the cylindrical shell 21 is prevented from being too large, and a flow outlet pipe 24 is connected to the bottom surface of the other side of the.
The intake pipe 23 inserts from the center of cylindricality casing 21 bottom surface, and the demineralized water of being convenient for fully wraps up the heat transfer with the exhaust steam, be equipped with a plurality of along intake pipe 23 length direction and be the spiral and encircle the venthole that distributes on the 23 pipe walls of cylinder intake pipe on intake pipe 23 in the intake pipe 23, give vent to anger simultaneously to each position in the cylindricality casing 21 for the decentralization of giving vent to anger, with the air mass dispersion back, the demineralized water of being convenient for fully wraps up the heat transfer with the exhaust steam, compare simultaneously in the.
The quantity of inlet tube 22 is two, and two inlet tubes 22 set up respectively in the both sides of intake pipe 23, and the demineralized water of being convenient for fully wraps up the heat transfer with the exhaust steam.
Preferably, the length of the inlet pipe 23 is 2/3 of the length of the column shaft of the column-shaped shell 21, the stroke of the outlet section is long, and the outlet is more dispersed.
The utility model discloses a theory of operation: when the system normally works, the first one-way valve 71 is opened, the second one-way valve 73 and the third one-way valve 74 are closed, exhaust steam is output from the boiler deaerator 1, flows through the first one-way valve 71, enters the exhaust steam recovery mixer 2, is mixed with demineralized water for heat exchange, is output to the gas-liquid separation device 4 after the heat exchange is finished, and gas and liquid after waste heat utilization are separated; when the dead steam recovery mixer 2 breaks down, the first check valve 71 is closed, the second check valve 73 and the third check valve 74 are opened, the dead steam of the boiler deaerator 1 passes through the second check valve 73 and is finally discharged from the release pipeline 75, and the third check valve 74 and the suck-back pipeline 72 can effectively cope with suck-back of demineralized water in the dead steam recovery mixer 2, so that the pressure in the container is balanced.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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 only for convenience of description and 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.
Claims (6)
1. Boiler deaerator exhaust steam recycle system, its characterized in that: the system comprises a boiler deaerator (1), wherein the boiler deaerator (1) is connected with an exhaust steam recovery mixer (2), the input end of the exhaust steam recovery mixer (2) is also connected with a demineralized water source (3), the output end of the exhaust steam recovery mixer (2) is connected with a gas-liquid separation device (4), and the gas-liquid separation device (4) is respectively connected with an air outlet pipe (5) and a drain return box (6); and a safety pipeline (7) is connected between the boiler deaerator (1) and the exhaust steam recovery mixer (2).
2. The boiler deaerator dead steam recycling system of claim 1, characterized in that: the safety pipeline (7) comprises a first one-way valve (71) arranged on a connecting pipeline of the boiler deaerator (1) and the exhaust steam recovery mixer (2), two ends of the first one-way valve (71) are connected with a back suction pipeline (72) in parallel, two ends of the back suction pipeline (72) are respectively connected with a second one-way valve (73) and a third one-way valve (74), and a release pipeline (75) is led out from the back suction pipeline (72).
3. The boiler deaerator dead steam recycling system of claim 1, characterized in that: the exhaust steam recovery mixer (2) comprises a cylindrical shell (21), a water inlet pipe (22) and an air inlet pipe (23) which extend towards the inside of the cylindrical shell (21) are respectively connected to the bottom surface of the same side of the cylindrical shell (21), and a flow outlet pipe (24) is connected to the bottom surface of the other side of the cylindrical shell (21).
4. The boiler deaerator dead steam recycling system of claim 3, characterized in that: the air inlet pipe (23) is inserted from the center of the bottom surface of the cylindrical shell (21), and a plurality of air outlet holes which are spirally distributed on the pipe wall of the cylindrical air inlet pipe (23) along the length direction of the air inlet pipe (23) are formed in the air inlet pipe (23).
5. The boiler deaerator dead steam recycling system of claim 4, characterized in that: the quantity of inlet tube (22) is two, and two inlet tube (22) set up the both sides in intake pipe (23) respectively.
6. The boiler deaerator dead steam recycling system of claim 3, 4 or 5, characterized in that: the length of the air inlet pipe (23) is 1/2-3/4 of the length of the column shaft of the cylindrical shell (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922450230.9U CN211502742U (en) | 2019-12-27 | 2019-12-27 | Exhaust steam recycling system of boiler deaerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922450230.9U CN211502742U (en) | 2019-12-27 | 2019-12-27 | Exhaust steam recycling system of boiler deaerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211502742U true CN211502742U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922450230.9U Active CN211502742U (en) | 2019-12-27 | 2019-12-27 | Exhaust steam recycling system of boiler deaerator |
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| Country | Link |
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| CN (1) | CN211502742U (en) |
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2019
- 2019-12-27 CN CN201922450230.9U patent/CN211502742U/en active Active
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