CN108194821B - High-pressure drainage system of garbage incineration power plant - Google Patents
High-pressure drainage system of garbage incineration power plant Download PDFInfo
- Publication number
- CN108194821B CN108194821B CN201810001461.9A CN201810001461A CN108194821B CN 108194821 B CN108194821 B CN 108194821B CN 201810001461 A CN201810001461 A CN 201810001461A CN 108194821 B CN108194821 B CN 108194821B
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- China
- Prior art keywords
- drainage
- pipeline
- pressure
- valve
- orifice plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 230000002209 hydrophobic effect Effects 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 8
- 238000004056 waste incineration Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Abstract
The invention belongs to the technical field of garbage incineration, and particularly relates to a high-pressure drainage system of a garbage incineration power plant, which comprises a drainage expansion tank and a deaerator, wherein a drainage inlet of the drainage expansion tank is communicated with a high-pressure drainage inlet pipe, and a drainage outlet of the drainage expansion tank is communicated with a drainage inlet of the deaerator; the high-pressure drainage inlet pipe is provided with a drainage valve, and a pressure regulating port of the drainage expansion vessel is communicated with the high-pressure drainage inlet pipe through a first pipeline; a first orifice plate is arranged in the first pipeline. The joint of the first pipeline and the high-pressure drain inlet pipe is positioned at one end of the drain valve, which is far away from the drain flash tank; and a steam outlet of the drainage expansion vessel is communicated with a steam outlet pipe. The pressure difference between the front and the rear of the drain valve in the high-pressure drain system of the garbage incineration power plant is greatly reduced, and the drain amount is improved, so that the adoption of a high-inlet drain valve is avoided, and the construction cost and the later operation and maintenance cost are greatly saved.
Description
Technical Field
The invention belongs to the technical field of garbage incineration, and particularly relates to a high-pressure drainage system of a garbage incineration power plant.
Background
With the rapid development of Chinese economy, the quality of garbage is continuously improved, and the garbage incineration can realize the reduction, harmless and recycling of garbage treatment, so that the method becomes one of the most effective methods for treating garbage, and the method can not only utilize the heat value to generate electricity and change waste into valuables, but also reduce the landfill of garbage and greatly reduce the pollution of garbage to the environment.
Most of the drainage generated after the high-pressure steam of the garbage incineration power plant is heated directly enters the deaerator, because the temperature of the deaerator is lower as the high-pressure drainage temperature is higher, and the heat exchange efficiency is lower as the temperature difference is larger, the high-quality steam consumption is larger; and the high-pressure water is directly introduced into the deaerator, so that the pressure in the deaerator is increased, the steam-water loss is increased, and the deaerator is easy to vibrate during operation. So at present, the high-pressure drain water generated by the waste incineration power plant with advanced technology flows through the drain valve to enter the drain diffusion vessel and then enters the deaerator.
The bigger the pressure difference between the front and the back of the drain valve, the smaller the drain amount. The high-pressure drain valve has higher pressure, the pressure in the drain expansion vessel is lower, the pressure difference between the front and the back of the drain valve is overlarge, so that the drain valve has small drain quantity and even zero, the domestic drain valve cannot work normally, and the imported drain valve is used, so that the problem can be effectively solved by adopting a special structure, but the cost is high.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a high-pressure drainage system of a waste incineration power plant with lower cost, which can greatly reduce the pressure difference between the front part and the rear part of a drainage valve and improve the drainage amount.
In order to achieve the purpose, the technical scheme of the invention is that the high-pressure drainage system of the garbage incineration power plant comprises a drainage expansion tank and a deaerator, wherein a drainage inlet of the drainage expansion tank is communicated with a high-pressure drainage inlet pipe, and a drainage outlet of the drainage expansion tank is communicated with a drainage inlet of the deaerator; the high-pressure drainage inlet pipe is provided with a drainage valve, and a pressure regulating port of the drainage expansion vessel is communicated with the high-pressure drainage inlet pipe through a first pipeline; a first orifice plate is arranged in the first pipeline.
Further, the joint of the first pipeline and the high-pressure drain inlet pipe is positioned at one end of the drain valve, which is far away from the drain flash tank.
Further, a steam outlet of the drainage expansion vessel is communicated with a steam outlet pipe.
Further, the first orifice plate is provided with an orifice.
Further, a convex clamping part is arranged on the outer wall of the first throttle orifice plate; a groove matched with the clamping part is formed in the inner wall of the first pipeline; the clamping part of the first orifice plate is clamped in the groove of the first pipeline.
As one embodiment, the pressure regulating port of the drainage expander is communicated with the high-pressure drainage inlet pipe through a second pipeline, and the second pipeline and the first pipeline are communicated with the high-pressure drainage inlet pipe at the same joint; and a second throttling orifice plate is arranged in the second pipeline.
As one of the embodiments, a first valve and a second valve are installed on the first pipeline, the first valve is positioned at one side of the first orifice plate close to the hydrophobic diffusion vessel, and the second valve is positioned at one side of the first orifice plate far from the hydrophobic diffusion vessel; and a third valve and a fourth valve are arranged on the second pipeline, the third valve is positioned on one side of the second throttling orifice plate, which is close to the drainage expansion tank, and the fourth valve is positioned on one side of the second throttling orifice plate, which is far away from the drainage expansion tank.
Compared with the prior art, the invention has the beneficial effects that:
the pressure difference between the front and the rear of the drain valve in the high-pressure drain system of the garbage incineration power plant is greatly reduced, and the drain amount is improved, so that the adoption of a high-inlet drain valve is avoided, and the construction cost and the later operation and maintenance cost are greatly saved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a high-pressure drainage system of a garbage incineration power plant according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a part of a high-pressure drainage system of a garbage incineration power plant in an enlarged manner;
fig. 3 is a schematic structural diagram of a high-pressure drainage system of a garbage incineration power plant according to an embodiment of the present invention; in the figure: 1. the device comprises a drainage expansion vessel, 2, a deaerator, 3, a drain valve, 4, a first throttling orifice, 5, a high-pressure drainage inlet pipe, 6, a first pipeline, 7, a steam outlet pipe, 8, throttling orifices, 9, a first valve, 10, a second valve, 11, a third valve, 12, a fourth valve, 13, a second throttling orifice, 14 and a second pipeline.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the embodiment of the invention provides a high-pressure drainage system of a garbage incineration power plant, which comprises a drainage expander 1 and a deaerator 2, wherein a drainage inlet of the drainage expander 1 is communicated with a high-pressure drainage inlet pipe 5, and a drainage outlet of the drainage expander 1 is communicated with a drainage inlet of the deaerator 2; the high-pressure drainage inlet pipe 5 is provided with a drainage valve 3, and a pressure regulating port of the drainage expansion vessel 1 is communicated with the high-pressure drainage inlet pipe 5 through a first pipeline 6; the first orifice plate 4 is installed in the first duct 6. The pressure difference between the front and the rear of the drain valve in the high-pressure drain system of the garbage incineration power plant is greatly reduced, and the drain amount is improved, so that the adoption of a high-inlet drain valve is avoided, and the construction cost and the later operation and maintenance cost are greatly saved.
Further, the junction between the first pipeline 6 and the high-pressure drain inlet 5 is located at the end of the drain valve 3 away from the drain flash tank 1.
Further, the steam outlet of the drainage diffuser 1 is communicated with a steam outlet pipe 7. The spare interface of the hydrophobic diffusion vessel 1 is needed to be idle, otherwise, the equipment needs to be perforated, and a flange interface is added.
Further, the first orifice plate 4 is provided with an orifice 8.
Further, a convex clamping part is arranged on the outer wall of the first orifice plate 4; a groove matched with the clamping part is formed in the inner wall of the first pipeline 6; the clamping part of the first orifice plate 4 is clamped in the groove of the first pipeline 6.
As shown in fig. 1-2, the high-pressure drain is conveyed to the drain inlet of the drain flash tank 1 through a high-pressure drain inlet pipe 5, a drain valve 3 is arranged on the high-pressure drain inlet pipe 5, and the drain outlet of the drain flash tank 1 is communicated with the drain inlet of the deaerator 2; the pressure regulating port of the drain flash tank 1 is connected to a high-pressure drain inlet pipe 5 in front of the drain valve through a first pipeline 6, a first orifice plate 4 is installed in the first pipeline 6, the pressure difference between the front and the rear of the drain valve is greatly reduced through the first orifice plate 4, the drain quantity is improved, and the construction cost and the later-period operation and maintenance cost are greatly saved.
As a further improvement of the invention, as shown in fig. 3, the pressure regulating port of the drainage expander 1 is communicated with the high-pressure drainage inlet pipe 5 through a second pipeline 14, and the second pipeline 14 and the first pipeline 6 are communicated with the high-pressure drainage inlet pipe 5 at the same joint; a second orifice plate 13 is mounted in the second conduit 14.
Further, a first valve 9 and a second valve 10 are installed on the first pipeline 6, the first valve 9 is located on one side of the first throttle orifice 4 close to the hydrophobic diffusion vessel 1, and the second valve 10 is located on one side of the first throttle orifice 4 away from the hydrophobic diffusion vessel 1; the second pipeline 14 is provided with a third valve 11 and a fourth valve 12, the third valve 11 is positioned at one side of the second orifice plate 13, which is close to the drainage diffuser 1, and the fourth valve 12 is positioned at one side of the second orifice plate 13, which is far away from the drainage diffuser 1.
As shown in fig. 3, two pipelines with different diameters, namely a first pipeline 6 and a second pipeline 14, can be arranged in front of a pressure regulating port of the drain flash tank 1 and a high-pressure drain inlet pipe 5 in front of a drain valve, and throttle plates with different diameters of throttle holes are correspondingly arranged in the first pipeline 6 and the second pipeline 14, namely a first throttle plate 4 and a second throttle plate 13; valves are arranged on two sides of the first throttle plate 4 and two sides of the second throttle plate 13, and proper throttle plates are selected to be used according to the pressure difference on two sides of the drain valve 3 so as to reduce the pressure difference between the front and the back of the drain valve 3 and improve the drain amount; the diameter of the orifice plate is 3-6mm, and the diameter of the pipeline for installing the orifice plate is 18-45mm.
As one of the embodiments, the diameters of the orifices of the first orifice plate 4 and the second orifice plate 13 are 3mm and 5mm, respectively, and the diameters of the first pipe 6 and the second pipe 14 are 18mm and 32mm, respectively; when the pressure difference between two sides of the drain valve 3 is larger, the third valve 11 and the fourth valve 12 on the second pipeline 14 can be used for closing the first valve 9 and the second valve 10 on the first pipeline 6, and the second throttling orifice 13 is used for reducing the front-back pressure difference of the drain valve 3; when the pressure difference between the two sides of the drain valve 3 is smaller, the first valve 9 and the second valve 10 on the first pipeline 6 can be opened, the third valve 11 and the fourth valve 12 on the second pipeline 14 can be closed, and the first orifice plate 4 is used for reducing the pressure difference between the front and the rear of the drain valve 3.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (5)
1. The high-pressure drainage system of the garbage incineration power plant comprises a drainage expansion vessel (1) and a deaerator (2), wherein a drainage inlet of the drainage expansion vessel (1) is communicated with a high-pressure drainage inlet pipe (5), and a drainage outlet of the drainage expansion vessel (1) is communicated with a drainage inlet of the deaerator (2); the method is characterized in that: the high-pressure drainage inlet pipe (5) is provided with a drainage valve (3), and a pressure regulating port of the drainage expansion vessel (1) is communicated with the high-pressure drainage inlet pipe (5) through a first pipeline (6); a first throttle orifice plate (4) is arranged in the first pipeline (6), and valves are arranged on two sides of the first throttle orifice plate (4); the joint of the first pipeline (6) and the high-pressure drain inlet pipe (5) is positioned at one end of the drain valve (3) far away from the drain flash tank (1); the pressure regulating port of the drainage expansion vessel (1) is communicated with the high-pressure drainage inlet pipe (5) through a second pipeline (14), and the second pipeline (14) and the first pipeline (6) are communicated with the high-pressure drainage inlet pipe (5) at the same joint; a second orifice plate (13) is arranged in the second pipeline (14), and valves are arranged on two sides of the second orifice plate (13); the diameters of the first pipeline (6) and the second pipeline (14) are different, and the diameters of the orifices of the first orifice plate (4) and the second orifice plate (13) are different.
2. The high pressure dewatering system of a waste incineration power plant according to claim 1, characterized in that: the steam outlet of the drainage expansion vessel (1) is communicated with a steam outlet pipe (7).
3. The high pressure dewatering system of a waste incineration power plant according to claim 1, characterized in that: an orifice (8) is arranged on the first orifice plate (4).
4. The high pressure dewatering system of a waste incineration power plant according to claim 1, characterized in that: the outer wall of the first throttle orifice plate (4) is provided with a convex clamping part; a groove matched with the clamping part is formed in the inner wall of the first pipeline (6); the clamping part of the first throttle orifice plate (4) is clamped in the groove of the first pipeline (6).
5. The high pressure dewatering system of a waste incineration power plant according to claim 1, characterized in that: a first valve (9) and a second valve (10) are arranged on the first pipeline (6), the first valve (9) is positioned on one side of the first throttling orifice plate (4) close to the hydrophobic diffusion vessel (1), and the second valve (10) is positioned on one side of the first throttling orifice plate (4) far away from the hydrophobic diffusion vessel (1); install third valve (11) and fourth valve (12) on second pipeline (14), third valve (11) are located second orifice plate (13) are close to the one side of hydrophobic expansion vessel (1), fourth valve (12) are located second orifice plate (13) are kept away from one side of hydrophobic expansion vessel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001461.9A CN108194821B (en) | 2018-01-02 | 2018-01-02 | High-pressure drainage system of garbage incineration power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810001461.9A CN108194821B (en) | 2018-01-02 | 2018-01-02 | High-pressure drainage system of garbage incineration power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108194821A CN108194821A (en) | 2018-06-22 |
| CN108194821B true CN108194821B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810001461.9A Active CN108194821B (en) | 2018-01-02 | 2018-01-02 | High-pressure drainage system of garbage incineration power plant |
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| CN (1) | CN108194821B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109538920B (en) * | 2018-10-17 | 2024-04-09 | 苏州颜吉通新能源科技有限公司 | Air preheater drainage system for garbage incineration power generation |
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-
2018
- 2018-01-02 CN CN201810001461.9A patent/CN108194821B/en active Active
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