CN219756337U - Automatic blowdown heat recovery unit of boiler - Google Patents
Automatic blowdown heat recovery unit of boiler Download PDFInfo
- Publication number
- CN219756337U CN219756337U CN202321290143.1U CN202321290143U CN219756337U CN 219756337 U CN219756337 U CN 219756337U CN 202321290143 U CN202321290143 U CN 202321290143U CN 219756337 U CN219756337 U CN 219756337U
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- Prior art keywords
- flash tank
- automatic
- boiler
- water
- heat energy
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Links
- 238000011084 recovery Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000010865 sewage Substances 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 9
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims 1
- 230000005494 condensation Effects 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model relates to the technical field of boiler sewage recovery, in particular to an automatic sewage heat energy recovery device of a boiler, which comprises a flash tank (1), wherein an inlet of the flash tank (1) is communicated with a boiler sewage pipe, an outlet of the flash tank (1) is communicated with a sewage pump (3), and the sewage pump (3) is electrically connected with a control system; a gas-liquid separation device (2) is arranged in the flash tank (1) to separate the water from the water discharged by the water discharge device; an automatic cooling and spraying device (4) is further arranged above the gas-liquid separation device (2) and used for adjusting the temperature of the condensed water in the gas-liquid separation device (2); the utility model has simple structure, realizes the waste heat recovery of the sewage, saves energy and realizes automatic sewage discharge.
Description
Technical Field
The utility model relates to the technical field of boiler sewage recovery, in particular to an automatic sewage heat energy recovery device for a boiler.
Background
When the boiler discharges sewage, a large amount of hot steam exists in the discharged sewage, in general, the sewage discharge pipes of a plurality of boilers are connected in the sewage discharge expansion vessel, the sewage is discharged through the pressure reduction of the sewage discharge expansion vessel, and when the steam discharge pipe above the sewage discharge expansion vessel and the sewage discharge pipe below the sewage discharge expansion vessel are discharged, a large amount of waste heat is discharged, so that a large amount of heat energy loss is caused, and particularly when a plurality of boilers are used simultaneously, the discharged waste heat loss is larger.
Disclosure of Invention
The utility model aims to provide an automatic blowdown heat energy recovery device for a boiler, which is characterized in that the blowdown water is conveyed to a water collecting flash tank for steam-water separation, and then the circulating water is automatically regulated to spray and cool through a temperature regulating valve, so that the generation of secondary steam is reduced, and the temperature of the externally-discharged blowdown water is reduced; the utility model has simple structure, realizes the waste heat recovery of the sewage, saves energy and realizes automatic sewage discharge.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an automatic blowdown heat energy recovery device of a boiler, which comprises a flash tank, wherein an inlet of the flash tank is communicated with a blowdown pipe of the boiler, an outlet of the flash tank is communicated with a blowdown water pump, and the blowdown water pump is electrically connected with a control system; a gas-liquid separation device is arranged in the flash tank to separate the sewage into water and steam; and an automatic temperature-adjusting and cooling spray device is also arranged above the gas-liquid separation device and used for adjusting the temperature of the condensed water in the gas-liquid separation device.
Specifically, automatically regulated cooling spray set is linked together with the circulating water system, automatically regulated cooling spray set is including shower head and governing valve, the shower head water size of regulation is controlled to the governing valve.
Specifically, the regulating valve is electrically connected with the control system.
Specifically, one end of the gas-liquid separation device is provided with a temperature sensing probe for detecting the temperature of the condensed water, and the temperature sensing probe is electrically connected with the control system.
Specifically, the top of the flash tank is provided with a steam anti-flushing device, and the bottom of the flash tank is provided with a cavitation-proof cyclone device.
Specifically, a drain valve is further arranged at the bottom of the flash tank.
Specifically, the top of the flash tank is also provided with a safety valve.
Specifically, the high and low positions in the flash tank are respectively provided with a liquid level meter for detecting the high liquid level and the low liquid level of the flash tank.
Specifically, the liquid level meter is electrically connected with the control system.
Based on the technical scheme, the embodiment of the utility model at least has the following technical effects:
according to the automatic blowdown heat energy recovery device for the boiler, the blowdown water is conveyed to the water collecting flash tank for steam-water separation, and then the circulating water is automatically regulated to spray and cool through the temperature regulating valve, so that the generation of secondary steam is reduced, and the temperature of the externally-discharged blowdown water is reduced; the utility model has simple structure, realizes the waste heat recovery of the sewage, saves energy and realizes automatic sewage discharge; the device adopts integral skid-mounted arrangement, has compact arrangement structure and is convenient to install and transport.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment of the present utility model;
in the figure: 1. a flash tank; 2. a gas-liquid separation device; 21. a condensate inlet; 22. a condensate outlet; 23. a temperature sensing probe; 3. a sewage pump; 4. automatically adjusting the cooling spray device; 41. a spray header; 42. a regulating valve; 5. a steam anti-flushing device; 6. a cavitation-preventing cyclone device; 7. a safety valve; 8. a blow-down valve; 9. a level gauge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. The described embodiments are only some, but not all, embodiments of the utility model, and the utility model is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the automatic blowdown heat energy recovery device for the boiler provided by the embodiment of the utility model comprises a flash tank 1, wherein an inlet of the flash tank 1 is communicated with a blowdown pipe of the boiler, and a bottom outlet of the flash tank 1 is communicated with a blowdown water pump 3; the flash tank 1 is internally provided with a gas-liquid separation device 2 for separating the sewage into steam and water, once the gas-liquid separation device 2 is provided with a condensate inlet 21, the other end of the gas-liquid separation device 2 is provided with a condensate outlet 22 and a temperature sensing probe 23, the condensate is circularly conveyed and utilized by a water pump, and the temperature sensing probe 23 is used for detecting the temperature of the condensate; an automatic cooling spray device 4 is further arranged above the gas-liquid separation device 2 and used for adjusting the temperature of the condensed water in the gas-liquid separation device 2, the automatic cooling spray device 4 is communicated with a circulating water system, the automatic cooling spray device 4 comprises a spray header 41 and an adjusting valve 42, the spray header 41 is positioned in the flash tank 1, and the upper part of the gas-liquid separation device 2 is provided with a cooling water inlet and a cooling water outlet; the regulating valve 42 is used for controlling and regulating the water outlet of the spray header 41; the sewage pump 3, the temperature sensing probe 23 and the regulating valve 42 are respectively and electrically connected with a control system.
In the embodiment, a steam anti-collision device 5 and a safety valve 7 are arranged at the top of the flash tank 1; potential safety hazards caused by overhigh steam pressure are avoided; the bottom of the high-temperature sewage pump is provided with a cavitation-resistant cyclone device 6, so that cavitation, a vapor plug and the like generated by the high-temperature sewage pump 3 are eliminated.
In this embodiment, the bottom of the flash tank 1 is further provided with a drain valve 8, and the drain valve 8 is periodically opened to perform drain cleaning on the bottom of the flash tank 1.
In this embodiment, the high and low positions in the flash tank 1 are respectively provided with a liquid level meter 9 for detecting the high liquid level and the low liquid level of the flash tank 1, and the liquid level meters 9 are respectively electrically connected with a control system.
In order to facilitate understanding of the technical scheme of the present utility model, the following describes the use process of the present embodiment:
the utility model provides an automatic blowdown heat energy recovery device for a boiler, which adopts combined closed recovery, and mainly comprises a flash tank 1, an automatic regulating and cooling spray device 4, a blowdown water pump 3, unit pipelines, a control cabinet, an instrument foundation base and the like. After sewage inlet gate valve is opened, boiler room process sewage enters flash tank 1, steam-water separation is carried out by steam-water separation device, flash steam is carried out by upper baffle plate and flow dividing device, steam-water separation is carried out by steam-water separation, very little steam flows into cooling spray device by external pipeline and is absorbed by circulating water, air at top of flash tank 1 is discharged by manual exhaust valve until exhaust water is discharged and closed, water temperature of condensed water in flash tank 1 is transmitted to electric regulating valve 42 actuator of control system by temperature probe electric signal, when water temperature exceeds 50 degree, automatic regulating valve 42 is opened automatically after receiving instruction, regulating valve 42 is closed automatically at lower than 50 degree, water temperature difference is positive and negative 2.5 degree; after the temperature of the sewage is reduced to 50 ℃, the sewage is pressurized and sent out to a designated place through the sewage pump 3, the sewage pump 3 is started and stopped through the electric signal magnetic flap liquid level meter 9, the sewage pump is stopped at a low water level, and the sewage pump is started at a high water level, and the circulation operation is repeated. The blow-down valve 8 is opened once in every quarter to blow down.
The device is equipped with a double pump system, 1 is used for 1 standby alternate operation or full open operation. The intelligent full-automatic control is adopted, and full-automatic water level control, high water level alarm, low water level pump stopping, overload protection, temperature water spray adjustment and the like are configured; the remote interface is reserved for realizing remote monitoring and control and realizing signal transmission such as remote water pump operation, fault and stop, remote liquid level alarm, equipment fault alarm and the like. The device accords with the fluid dynamics principle, and the conditions of cavitation and vapor plug generation generated by the high-temperature sewage pump 3 are thoroughly eliminated by matching the pressure balancing device and the cavitation eliminating device with the high-temperature-resistant water pump.
According to the automatic blowdown heat energy recovery device for the boiler, the blowdown water is conveyed to the water collection flash tank 1 for steam-water separation, and then the circulating water is automatically regulated to spray and cool through the temperature regulating valve 42, so that the generation of secondary steam is reduced, and the temperature of the externally-discharged blowdown water is reduced; the utility model has simple structure, realizes the waste heat recovery of the sewage, saves energy and realizes automatic sewage discharge; the device adopts integral skid-mounted arrangement, has compact arrangement structure and is convenient to install and transport.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The automatic blowdown heat energy recovery device of the boiler is characterized by comprising a flash tank (1), wherein an inlet of the flash tank (1) is communicated with a boiler blowdown pipe, an outlet of the flash tank (1) is communicated with a blowdown water pump (3), and the blowdown water pump (3) is electrically connected with a control system; a gas-liquid separation device (2) is arranged in the flash tank (1) to separate the sewage into water and steam; an automatic temperature-adjusting and cooling spray device (4) is further arranged above the gas-liquid separation device (2) and used for adjusting the temperature of condensation water in the gas-liquid separation device (2).
2. The automatic blowdown heat energy recovery device of a boiler according to claim 1, wherein the automatic cooling spray device (4) is communicated with a circulating water system, the automatic cooling spray device (4) comprises a spray header (41) and a regulating valve (42), and the regulating valve (42) controls and regulates the water outlet size of the spray header (41).
3. A boiler automatic blowdown heat energy recovery device according to claim 2, characterized in that the regulating valve (42) is electrically connected with a control system.
4. The automatic blowdown heat energy recovery device of a boiler according to claim 1, wherein one end of the gas-liquid separation device (2) is provided with a temperature sensing probe (23) for detecting the temperature of condensed water, and the temperature sensing probe (23) is electrically connected with a control system.
5. The automatic blowdown heat energy recovery device of a boiler according to claim 1, wherein the top of the flash tank (1) is provided with a steam anti-flushing device (5), and the bottom is provided with a cavitation-preventing cyclone device (6).
6. The automatic blowdown heat energy recovery device of a boiler according to claim 5, wherein a blowdown valve (8) is further arranged at the bottom of the flash tank (1).
7. The automatic blowdown heat energy recovery device of a boiler according to claim 5, wherein a safety valve (7) is further arranged at the top of the flash tank (1).
8. The automatic blowdown heat energy recovery device of a boiler according to claim 1, wherein liquid level meters (9) are respectively arranged at the high and low positions in the flash tank (1) and are used for detecting the high liquid level and the low liquid level of the flash tank (1).
9. A boiler automatic blowdown heat energy recovery device according to claim 8, characterized in that the level meter (9) is electrically connected with a control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321290143.1U CN219756337U (en) | 2023-05-25 | 2023-05-25 | Automatic blowdown heat recovery unit of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321290143.1U CN219756337U (en) | 2023-05-25 | 2023-05-25 | Automatic blowdown heat recovery unit of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219756337U true CN219756337U (en) | 2023-09-26 |
Family
ID=88085874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321290143.1U Active CN219756337U (en) | 2023-05-25 | 2023-05-25 | Automatic blowdown heat recovery unit of boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219756337U (en) |
-
2023
- 2023-05-25 CN CN202321290143.1U patent/CN219756337U/en active Active
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