CN220355168U - Boiler exhaust steam recovery device - Google Patents
Boiler exhaust steam recovery device Download PDFInfo
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- CN220355168U CN220355168U CN202321801434.2U CN202321801434U CN220355168U CN 220355168 U CN220355168 U CN 220355168U CN 202321801434 U CN202321801434 U CN 202321801434U CN 220355168 U CN220355168 U CN 220355168U
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- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 21
- 230000001603 reducing effect Effects 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000009991 scouring Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a boiler exhaust steam recovery device which comprises a main steam main pipe and a second connecting pipe, wherein the main steam main pipe is communicated with a main steam header of a boiler through the first connecting pipe, a main steam parallel steam port and a first parallel steam port are arranged on the first connecting pipe, the first parallel steam port is arranged close to the main steam header of the boiler, and the distance between the first parallel steam port and the main steam parallel steam port is not less than 60m. According to the exhaust steam recovery device of the boiler, the temperature and pressure reducer is used for supplying heat to the main pipe of the heat supply network and supplying heat to the external network, so that the purpose of exhaust steam recovery is realized, and the heat efficiency of the whole plant is improved; after transformation, when the pressure of the main steam is less than or equal to 1.0MPa and steam is exhausted, the noise is lower than 70dB, and the environmental noise standard requirement can be met; the distance between the first parallel steam valve and the main steam parallel steam valve is not smaller than 60m, when the main steam main pipe is started by sliding parameters, the stable parallel steam of high-pressure steam and the main steam main pipe is realized, the scouring of the high-pressure steam to the sealing surface of the air exhaust valve is reduced, and the service life of the device can be prolonged.
Description
Technical Field
The utility model belongs to the technical field of boiler exhaust steam recovery, and particularly relates to a boiler exhaust steam recovery device.
Background
The boiler start and stop exhaust positions are on a main steam header of the boiler, the elevation position of the main steam header is 46 meters at the top of the boiler, and the boiler start and stop exhaust is discharged to the atmosphere through an air exhaust pipe and a silencer. The company has 5 high-temperature and high-pressure boilers, and main steam of the 5 boilers is converged into a main pipe system, and main steam parameters of the main pipe are 9.0MPa and 545 ℃. When the main steam parameters of the boiler are required to reach the steam parameters of the main pipe during the start-up of the boiler, the main pipe can be integrated. The company is a thermal power plant for intensively supplying steam to enterprises in a development area, and the external steam supply parameter is 1.0MPa and 260 ℃. Qualified steam with the pressure of more than 1.0MPa, 9.0MPa and 545 ℃ is directly discharged to the atmosphere when the boiler is started and stopped, so that steam waste is caused, the steam discharging noise is about 80dB, and noise environmental pollution is caused.
For this purpose, a boiler exhaust steam recovery device is proposed.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a boiler exhaust steam recovery device to solve the technical problems that qualified steam with the pressure of more than 1.0MPa, 9.0MPa and 545 ℃ is directly discharged to the atmosphere when a boiler of the company is started and stopped at present, so that steam is wasted and noise and environmental pollution are caused.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
boiler exhaust steam recovery unit includes:
the main steam main pipe is communicated with a main steam header of the boiler through a first connecting pipe, a main steam parallel steam valve and a first parallel steam valve are arranged on the first connecting pipe, the first parallel steam valve is arranged close to the main steam header of the boiler, and the distance between the first parallel steam valve and the main steam parallel steam valve is not less than 60m;
the second connecting pipe is communicated with the first connecting pipe through a third connecting pipe, and the far end of the second connecting pipe is connected to an inlet of the temperature and pressure reducer, wherein:
the far end of the main steam main pipe is connected to the inlet of the temperature and pressure reducer through a fourth connecting pipe, and the outlet of the temperature and pressure reducer is connected to the heat supply network main pipe.
As a further scheme of the utility model, the boiler exhaust steam recovery device further comprises a temperature reducing water pipe, wherein the far end of the temperature reducing water pipe is connected to the position, close to the inlet of the temperature reducing pressure reducer, of the main steam main pipe.
As a further scheme of the utility model, in the boiler exhaust steam recovery device, the stop valve and the regulating valve are arranged on the temperature reducing water pipe.
As a further scheme of the utility model, the main steam main pipe is provided with a stop valve and a regulating valve.
As a further scheme of the utility model, in the boiler exhaust steam recovery device, the fourth connecting pipe is provided with a second parallel steam valve.
As a further scheme of the utility model, in the boiler exhaust steam recovery device, the regulating valve is arranged on the third connecting pipe, and when the pressure in the main steam header of the boiler is more than or equal to 1.0MPa, the regulating valve on the third connecting pipe is conducted.
In the boiler exhaust steam recovery device, the third connecting pipe is connected in front of the main steam parallel valve on the first connecting pipe, and the third connecting pipe is a DN100 pipeline.
Compared with the prior art, the boiler exhaust steam recovery device provided by the utility model has the following beneficial effects:
1. a third connecting pipe communicated with a second connecting pipe is connected to the front of a main steam parallel valve on a first connecting pipe connected with a main steam header of the boiler, the far end of the second connecting pipe is connected to an inlet of a temperature and pressure reducer, the temperature and pressure reducer is simultaneously combined when the pressure of the main steam of the boiler is more than or equal to 1.0MPa, the boiler is started and stopped to discharge qualified steam with the pressure of more than 1.0MPa to the air, and the qualified steam is supplied to a main pipe of a heat supply network through the temperature and pressure reducer to supply heat to an external network, so that the purpose of waste steam recovery is realized, and the heat efficiency of the whole plant is improved;
2. after transformation, when the pressure of the main steam is less than or equal to 1.0MPa and steam is exhausted, the noise is lower than 70dB, and the environmental noise standard requirement can be met;
3. the distance between the first parallel steam valve and the main steam parallel steam valve is not smaller than 60m, when the main steam main pipe is started by sliding parameters, the stable parallel steam of high-pressure steam and the main steam main pipe is realized, the scouring of the high-pressure steam to the sealing surface of the air exhaust valve is reduced, and the service life of the device can be prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only examples of embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an architecture of an embodiment of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of the implementation routine of the present utility model is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.
In the description of the embodiments of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; may be a communication between the interiors of two elements; either directly or indirectly through intermediaries, the specific meaning of the terms in the embodiments of the utility model will be understood by those skilled in the art in the specific case.
Referring to fig. 1, the exhaust steam recovery device of the boiler provided by the embodiment of the utility model is used for recovering and using exhaust steam of a plurality of boilers and mainly comprises a main steam main pipe and a second connecting pipe.
The main steam main pipe is communicated with the main steam header of the boiler through a first connecting pipe, a main steam parallel valve and a first parallel valve are arranged on the first connecting pipe, the first parallel valve is close to the main steam header of the boiler, and the distance between the first parallel valve and the main steam parallel valve is not smaller than 60m.
The second connecting pipe is communicated with the first connecting pipe through a third connecting pipe, and the far end of the second connecting pipe is connected with the inlet of the temperature and pressure reducer.
The far end of the main steam main pipe is connected to the inlet of the temperature and pressure reducing device through a fourth connecting pipe, the outlet of the temperature and pressure reducing device is connected to the main heat supply network pipe, and a second parallel valve is arranged on the fourth connecting pipe.
And when the pressure in the main steam header of the boiler is greater than or equal to 1.0MPa, the regulating valve on the third connecting pipe is communicated, so that the pressure in the main steam header of the boiler can enter the second connecting pipe through the third connecting pipe and then enter the temperature and pressure reducer, finally enter the main pipe of the heat supply network to supply heat for the heat supply network pipeline, and the third connecting pipe is connected in front of the main steam and the steam on the first connecting pipe.
According to the boiler exhaust steam recovery device adopting the scheme, the third connecting pipe communicated with the second connecting pipe is connected to the front of the main steam parallel steam valve on the first connecting pipe connected with the main steam header of the boiler, the far end of the second connecting pipe is connected to the inlet of the temperature and pressure reducer, the temperature and pressure reducer is simultaneously combined when the pressure of the main steam of the boiler is more than or equal to 1.0MPa, the boiler is started and stopped to discharge qualified steam with the pressure of more than 1.0MPa to the air, and the heat is supplied to the main pipe of the heat supply network through the temperature and pressure reducer, so that the purpose of exhaust steam recovery is realized, and the thermal efficiency of the whole plant is improved.
In addition, in the prior art, when the main steam parameter of the boiler is close to 9.0MPa of the main steam parameter of the non-incorporated main pipe, the steam exhaust sound is about 80dB and exceeds the requirement of 70dB in the daytime of noise.
By the improvement of the scheme, when the pressure of the main steam is less than or equal to 1.0MPa and the steam is exhausted, the noise is lower than 70dB, and the environmental noise standard requirement can be met.
The distance between the first parallel steam valve and the main steam parallel steam valve is not smaller than 60m, when the main steam main pipe is started by sliding parameters, the stable parallel steam of high-pressure steam and the main steam main pipe is realized, the scouring of the high-pressure steam to the sealing surface of the air exhaust valve is reduced, and the service life of the device can be prolonged.
In order to further improve the temperature and pressure reducing effect, in the embodiment of the utility model, a temperature reducing water pipe is further arranged, and the far end of the temperature reducing water pipe is connected to the position of the main steam main pipe, which is close to the inlet of the temperature and pressure reducer.
In order to prevent the backflow of the temperature reducing water in the temperature reducing water pipe, a stop valve and a regulating valve are arranged on the temperature reducing water pipe.
In order to prevent the back flow of the steam in the main steam main pipe, a stop valve and a regulating valve are arranged on the main steam main pipe.
In order to meet the use requirement, the third connecting pipe is a DN100 pipeline.
To sum up: the exhaust steam recovery device of the boiler is characterized in that a third connecting pipe communicated with a second connecting pipe is connected in front of a main steam parallel valve on a first connecting pipe connected with a main steam header of the boiler, the far end of the second connecting pipe is connected to an inlet of a temperature and pressure reducer, the temperature and pressure reducer is simultaneously combined when the pressure of the main steam of the boiler is more than or equal to 1.0MPa, qualified steam with the pressure of more than 1.0MPa is discharged from a start-up and a shut-down of the boiler to the air, and is supplied to a main pipe of a heat supply network through the temperature and pressure reducer to supply heat to an external network, so that the purpose of exhaust steam recovery is realized, and the thermal efficiency of the whole plant is improved; after transformation, when the pressure of the main steam is less than or equal to 1.0MPa and steam is exhausted, the noise is lower than 70dB, and the environmental noise standard requirement can be met; the distance between the first parallel steam valve and the main steam parallel steam valve is not smaller than 60m, when the main steam main pipe is started by sliding parameters, the stable parallel steam of high-pressure steam and the main steam main pipe is realized, the scouring of the high-pressure steam to the sealing surface of the air exhaust valve is reduced, and the service life of the device can be prolonged.
While the basic principles of the present utility model have been shown and described, the foregoing is provided by way of illustration of a preferred embodiment of the utility model, and not by way of limitation, the foregoing embodiment and description are merely illustrative of the principles of the utility model, and any modifications, equivalents, improvements or modifications not within the spirit and scope of the utility model should be included within the scope of the utility model.
Claims (7)
1. Boiler exhaust steam recovery unit, its characterized in that includes:
the main steam main pipe is communicated with a main steam header of the boiler through a first connecting pipe, a main steam parallel steam valve and a first parallel steam valve are arranged on the first connecting pipe, the first parallel steam valve is arranged close to the main steam header of the boiler, and the distance between the first parallel steam valve and the main steam parallel steam valve is not less than 60m;
the second connecting pipe is communicated with the first connecting pipe through a third connecting pipe, and the far end of the second connecting pipe is connected to an inlet of the temperature and pressure reducer, wherein:
the far end of the main steam main pipe is connected to the inlet of the temperature and pressure reducer through a fourth connecting pipe, and the outlet of the temperature and pressure reducer is connected to the heat supply network main pipe.
2. The boiler exhaust steam recovery apparatus according to claim 1, wherein: the steam generator further comprises a temperature reducing water pipe, wherein the far end of the temperature reducing water pipe is connected to the position, close to the inlet of the temperature reducing pressure reducer, of the main steam main pipe.
3. The boiler exhaust steam recovery apparatus according to claim 2, wherein: and the temperature reducing water pipe is provided with a stop valve and a regulating valve.
4. A boiler exhaust steam recovery apparatus according to claim 3, wherein: and the main steam main pipe is provided with a stop valve and a regulating valve.
5. The boiler exhaust steam recovery apparatus according to claim 4, wherein: and a second parallel valve is arranged on the fourth connecting pipe.
6. The boiler exhaust steam recovery apparatus according to claim 5, wherein: and the third connecting pipe is provided with a regulating valve, and when the pressure in the main steam header of the boiler is more than or equal to 1.0MPa, the regulating valve on the third connecting pipe is communicated.
7. The boiler exhaust steam recovery apparatus according to claim 6, wherein: the third connecting pipe is connected in front of the main steam parallel valve on the first connecting pipe, and the third connecting pipe is a DN100 pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801434.2U CN220355168U (en) | 2023-07-11 | 2023-07-11 | Boiler exhaust steam recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801434.2U CN220355168U (en) | 2023-07-11 | 2023-07-11 | Boiler exhaust steam recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220355168U true CN220355168U (en) | 2024-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321801434.2U Active CN220355168U (en) | 2023-07-11 | 2023-07-11 | Boiler exhaust steam recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220355168U (en) |
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2023
- 2023-07-11 CN CN202321801434.2U patent/CN220355168U/en active Active
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