CN216244221U - Sliding rail movable type air curtain wall-adhering air cooling and purging system - Google Patents
Sliding rail movable type air curtain wall-adhering air cooling and purging system Download PDFInfo
- Publication number
- CN216244221U CN216244221U CN202122820892.8U CN202122820892U CN216244221U CN 216244221 U CN216244221 U CN 216244221U CN 202122820892 U CN202122820892 U CN 202122820892U CN 216244221 U CN216244221 U CN 216244221U
- Authority
- CN
- China
- Prior art keywords
- air
- cooling
- cooling air
- inlet
- air box
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The utility model discloses a sliding rail movable type air curtain wall-adhering air cooling and purging system.A main cooling air box outlet is respectively communicated with an A cooling air box inlet and a B cooling air box inlet, the A cooling air box outlet is connected with an A swing type air channel inlet, the B cooling air box outlet is connected with a B swing type air channel inlet, the A swing type air channel outlet is connected with an A furnace internal cooling air box inlet, the B swing type air channel outlet is connected with a B furnace internal cooling air box inlet, the A furnace internal cooling air box outlet is communicated with an A air curtain nozzle group inlet, and the B furnace internal cooling air box outlet is communicated with a B air curtain nozzle group inlet. According to the utility model, cold secondary air is sprayed into the hearth along the downward direction, and a plurality of groups of air flow jet streams form an air curtain, so that the cooling effect on the high-temperature area of the water-cooled wall is achieved, the oxygen quantity is supplemented to the reducing area, the high-temperature corrosion is effectively relieved, and the operation safety of the boiler is ensured.
Description
Technical Field
The utility model belongs to the field of thermal power generation equipment, and relates to a sliding rail movable type air curtain wall-adhering air cooling and purging system.
Background
In recent years, with the requirement of national environmental protection development, most power plants in China are transformed into ultra-clean emission, and meanwhile, due to the vigorous development of new energy, many traditional thermal power plants are transformed into deep peak regulation flexibility, so that the proportion of high-quality fuel is reduced, the proportion of poor-quality fuel is increased, and the responsibility of cost reduction, efficiency improvement and poor-quality energy absorption is borne.
At present, after a part of coal-fired boilers of thermal power plants are transformed with low-nitrogen burners and run in a mixed combustion mode, because the combustion mode and the coal-fired mixed formula are changed, overtemperature of water wall tubes and CO and H in burner regions caused by combustion center deviation and unbalanced heat load distribution exist in the boilers2High-temperature corrosion caused by over-high concentration of S seriously affects the combustion safety of the boiler. Traditional processing mode includes modes such as monitoring wall atmosphere, add adherence wind, but position is fixed after adherence wind transformation, and the active surface is little, and the operation degree of difficulty is big moreover in operation.
Therefore, a set of stable and reliable cooling system is designed aiming at the problem of high-temperature corrosion of the main combustion area, and the problems of high temperature of the water wall of the combustion area, CO and H can be solved2The S concentration exceeds the standard and the like, and is stable, reliable, flexible and convenient to operate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sliding rail movable type air curtain wall-adhering air cooling and purging system which can solve the problems of high temperature of a water-cooled wall of a combustion area, CO and H2The S concentration exceeds the standard and the like, and is stable, reliable, flexible and convenient to operate.
In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:
a sliding rail movable type air curtain wall-adhering air cooling and purging system comprises a main cooling air box, an A cooling air box, a B cooling air box, an A swing type air channel, a B swing type air channel, an A furnace cooling air box, a B furnace cooling air box, an A air curtain nozzle group and a B air curtain nozzle group;
the main cooling air box outlet is respectively communicated with the A cooling air box inlet and the B cooling air box inlet, the A cooling air box outlet is connected with the A swing type air channel inlet, the B cooling air box outlet is connected with the B swing type air channel inlet, the A swing type air channel outlet is connected with the A furnace cooling air box inlet, the B swing type air channel outlet is connected with the B furnace cooling air box inlet, the A furnace cooling air box outlet is communicated with the A air curtain nozzle group inlet, and the B furnace cooling air box outlet is communicated with the B air curtain nozzle group inlet.
The utility model is further improved in that a path of cold secondary air is introduced from a secondary air pipe before entering the air preheater and enters the main cooling air box to be used as a cooling and blowing medium.
The utility model is further improved in that a main cooling air box adjusting valve is arranged at an inlet of the main cooling air box and used for controlling the starting and stopping of the whole system and adjusting the air volume entering the main cooling air box.
The utility model has the further improvement that the cooling air box A is connected with the inlet of the swing type air channel A through a movable mechanism, so that the swing type air channel A can swing up and down; the cooling air box B is connected with the inlet of the swing type air duct B through a movable mechanism, so that the swing type air duct B can swing up and down.
The utility model has the further improvement that the utility model also comprises an air duct slide rail A and an air duct slide rail B, wherein the air duct slide rail A is arranged on the side A of the furnace wall, and the swing air duct A can drive the cooling air box in the furnace A to move up and down along the air duct slide rail A; the B air channel slide rail is arranged on the side B of the furnace wall, and the B swing type air channel can drive the B in-furnace cooling air box to move up and down along the B air channel slide rail.
The utility model has the further improvement that the A gas curtain nozzle group and the B gas curtain nozzle group are positioned in the boiler furnace, and the outlets of the nozzles face downwards and are arranged by being attached to the wall surface of the water-cooled wall.
The utility model has the further improvement that the inlet of the cooling air box A is provided with a cooling air box adjusting valve A, and the inlet of the cooling air box B is provided with a cooling air box adjusting valve B, and the cooling air box adjusting valves are used for independently controlling the starting and the stopping of the single-side system in a subarea manner and adjusting the air volume entering each cooling air box.
The system is further improved in that the system is additionally arranged on the furnace water-cooling wall surface in the symmetrical direction according to the temperature of the water-cooling wall and the distribution condition of the reducing atmosphere, so that different cooling and purging requirements are met.
The utility model has at least the following beneficial technical effects:
according to the sliding rail movable type air curtain wall-adhering air cooling and purging system, the main cooling air box adjusting valve is arranged at the inlet of the main cooling air box, so that the whole system can be started and closed at any time according to the temperature condition of the area of the ash cooling bucket during operation, and no accident loss of secondary air volume can be caused.
According to the slide rail movable type air curtain wall-adhering air cooling and purging system, the inlet of the cooling air box A and the inlet of the cooling air box B are respectively provided with the regulating valve, the starting and stopping of a single-side system can be independently controlled in a partition mode, the air quantity entering each cooling air box can be regulated, and small-area accurate cooling can be performed on the premise of energy conservation.
According to the sliding rail mobile air curtain wall-adhering air cooling and purging system, the nozzle outlets of each air curtain nozzle group in the hearth face downwards and are arranged in a wall-adhering manner, and the plurality of groups of air flow jet streams form the air curtain in the downward direction, so that the combustion air flow organization in the combustor area cannot be influenced.
The slide rail movable type air curtain wall-attached air cooling and purging system can move the cooling air duct up and down along the slide rail according to the temperature distribution of the water-cooled wall and the wall surface atmosphere condition, and the two sides AB can also move independently, so that the cooling and purging requirements of different positions and strengths can be flexibly and conveniently met.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
the cooling air box comprises a main cooling air box 1, a cooling air box A2, a cooling air box B3, an oscillating air channel A4, an oscillating air channel B5, a main cooling air box adjusting valve 6, a cooling air box adjusting valve A7, a cooling air box adjusting valve B8, an internal cooling air box A9, an internal cooling air box B10, an air curtain nozzle group A11, an air curtain nozzle group B12, an air channel slide rail A13, an air channel slide rail B14 and a boiler furnace chamber 15.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the slide rail movable type air curtain wall adhering air cooling and purging system comprises a main cooling air box 1, a cooling air box A2, a cooling air box B3, an oscillating air channel A4, an oscillating air channel B5, a main cooling air box regulating valve 6, a cooling air box regulating valve A7, a cooling air box B regulating valve 8, a cooling air box in a furnace A9, a cooling air box in a furnace B10, an air curtain nozzle group A11, an air curtain nozzle group B12, an air channel slide rail A13, an air channel slide rail B14 and a boiler furnace chamber 15; an outlet of a main cooling air box 1 is respectively communicated with inlets of an A cooling air box 2 and a B cooling air box 3, an outlet of the A cooling air box 2 is connected with an inlet of an A oscillating air channel 4, an outlet of the B cooling air box 3 is connected with an inlet of a B oscillating air channel 5, an outlet of the A oscillating air channel 4 is connected with an inlet of a cooling air box 9 in the A furnace, an outlet of the B oscillating air channel 5 is connected with an inlet of a cooling air box 10 in the B furnace, an outlet of the cooling air box 9 in the A furnace is communicated with an inlet of an A air curtain nozzle group 11, and an outlet of the cooling air box 10 in the B furnace is communicated with an inlet of a B air curtain nozzle group 12.
It should be noted that, one path of cold secondary air is introduced from the secondary air pipe before entering the air preheater and enters the main cooling air box 1 as a cooling and purging medium; the outlet of the main cooling air box 1 is divided into a cooling air box A2 and a cooling air box B3; a main cooling air box adjusting valve 6 is arranged at an inlet of the main cooling air box 1, and can control the start and stop of the whole system and adjust the air volume entering the main cooling air box 1; the inlet of the cooling air box A2 is provided with a cooling air box adjusting valve A7, the inlet of the cooling air box B3 is provided with a cooling air box adjusting valve B8, and the starting and stopping of a single-side system can be independently controlled in a subarea manner and the air quantity entering each cooling air box can be adjusted; the cooling air box A2 is connected with the inlet of the swing type air channel A4 through a movable mechanism, so that the swing type air channel A4 can swing up and down; the cooling air box 3B is connected with the inlet of the swing type air duct 5B through a movable mechanism, so that the swing type air duct 5B can swing up and down; the A air channel slide rail 13 is arranged on the side A of the furnace wall, and the A swing type air channel 4 drives the A in-furnace cooling air box 9 to move up and down along the A air channel slide rail 13; the B air duct slide rail 14 is arranged on the side B of the furnace wall, and the B swing type air duct 5 drives the cooling air box 10 in the B furnace to move up and down along the B air duct slide rail 14; the A gas curtain nozzle group 11 and the B gas curtain nozzle group 12 are positioned in a boiler furnace 15, and the outlets of the nozzles face downwards and are arranged by being attached to the wall surface of a water-cooled wall; the system can be additionally arranged on the furnace water-cooling wall surface in the symmetrical direction according to the temperature of the water-cooling wall and the distribution condition of reducing atmosphere, and is suitable for different cooling and purging requirements.
The utility model relates to a sliding rail movable type air curtain wall-adhering air cooling and blowing system, which comprises the following steps of:
the cold overgrate air is sent into main cooling bellows 1, after passing through A cooling bellows regulating valve 7 and B cooling bellows regulating valve 8 in the bellows, get into A cooling bellows 2 respectively, A oscillating wind channel 4 and B cooling bellows 3, B oscillating wind channel 5, after the rectification of cooling bellows 10 in A stove and B stove, the cold overgrate air passes through A air curtain spout group 11 and B air curtain spout group 12 respectively, spout into furnace in the adherence of down direction, the multiunit air current penetrates to become the air curtain, play the cooling effect to the high temperature region of water-cooling wall, to the regional oxygen content that has complemented of reducibility, high temperature corrosion has effectively been alleviated, the operation safety of boiler has been guaranteed.
According to the utility model, the main cooling air box regulating valve is arranged at the inlet of the main cooling air box, so that the whole system can be started and closed at any time according to the temperature condition of the ash cooling hopper area during operation, and no accident loss of secondary air volume can be caused; according to the utility model, the regulating valves are respectively arranged at the inlet of the cooling air box A and the inlet of the cooling air box B, so that the starting and stopping of a single-side system can be independently controlled in a subarea manner, the air quantity entering each cooling air box can be regulated, and the small-area accurate cooling can be carried out on the premise of energy saving.
In each air curtain nozzle group in the hearth, the nozzle outlets face downwards and are arranged close to the wall, and a plurality of groups of airflow nozzles form air curtains in the downwards direction without influencing the combustion airflow organization in a combustor area; according to the utility model, the cooling air duct can move up and down along the slide rail according to the temperature distribution of the water-cooled wall and the wall surface atmosphere condition, and the two sides AB can also move independently, so that the cooling and blowing requirements of different positions and strengths can be flexibly and conveniently met.
Claims (8)
1. A sliding rail movable type air curtain adherence air cooling and purging system is characterized by comprising a main cooling air box (1), an A cooling air box (2), a B cooling air box (3), an A swing type air channel (4), a B swing type air channel (5), an A in-furnace cooling air box (9), a B in-furnace cooling air box (10), an A air curtain nozzle group (11) and a B air curtain nozzle group (12);
the outlet of the main cooling air box (1) is respectively communicated with the inlets of the A cooling air box (2) and the B cooling air box (3), the outlet of the A cooling air box (2) is connected with the inlet of an A swing type air channel (4), the outlet of the B cooling air box (3) is connected with the inlet of a B swing type air channel (5), the outlet of the A swing type air channel (4) is connected with the inlet of a cooling air box (9) in the A furnace, the outlet of the B swing type air channel (5) is connected with the inlet of a cooling air box (10) in the B furnace, the outlet of the cooling air box (9) in the A furnace is communicated with the inlet of an A air curtain nozzle group (11), and the outlet of the cooling air box (10) in the B furnace is communicated with the inlet of a B air curtain nozzle group (12).
2. The slide rail movable type air curtain wall-adhering air cooling and purging system as claimed in claim 1, wherein one path of cold secondary air is introduced from a secondary air pipe before entering the air preheater and enters the main cooling air bellow (1) to be used as a cooling and purging medium.
3. The slide rail mobile type air curtain adherence air cooling and purging system according to claim 1, wherein a main cooling air box adjusting valve (6) is arranged at an inlet of the main cooling air box (1) and is used for controlling the start and stop of the whole system and adjusting the air volume entering the main cooling air box (1).
4. The sliding rail mobile type air curtain adherence air cooling and purging system as claimed in claim 1, wherein the A cooling air box (2) is connected with the inlet of the A swing type air duct (4) through a movable mechanism, so that the A swing type air duct (4) can swing up and down; the cooling air box (3) of the B is connected with the inlet of the swing type air duct (5) of the B through a movable mechanism, so that the swing type air duct (5) of the B can swing up and down.
5. The slide rail movable type air curtain adherence air cooling and purging system as claimed in claim 1, further comprising an A air duct slide rail (13) and a B air duct slide rail (14), wherein the A air duct slide rail (13) is arranged on the side A of the furnace wall, and the A swing type air duct (4) can drive the A furnace cooling air box (9) to move up and down along the A air duct slide rail (13); the B air duct slide rail (14) is arranged on the side B of the furnace wall, and the B swing type air duct (5) can drive the B in-furnace cooling air box (10) to move up and down along the B air duct slide rail (14).
6. The slide rail moving type gas curtain wall-adherent air cooling and purging system as claimed in claim 1, wherein the A gas curtain nozzle group (11) and the B gas curtain nozzle group (12) are located in a boiler furnace (15), and outlets of the nozzles face downwards and are arranged in a manner of being attached to the wall surface of a water-cooled wall.
7. The slide rail movable type air curtain wall-adhering air cooling and purging system as claimed in claim 1, wherein an inlet of the cooling air bellow A (2) is provided with a cooling air bellow adjusting valve A (7), and an inlet of the cooling air bellow B (3) is provided with a cooling air bellow adjusting valve B (8) for separately and independently controlling the start and stop of a single-side system and adjusting the air volume entering each cooling air bellow.
8. The slide rail movable type gas curtain wall-adhering air cooling and purging system as claimed in claim 7, is characterized in that the system is additionally arranged on the furnace water-cooling wall surface in the symmetrical direction according to the temperature of the water-cooling wall and the distribution condition of reducing atmosphere, so that different cooling and purging requirements are met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122820892.8U CN216244221U (en) | 2021-11-17 | 2021-11-17 | Sliding rail movable type air curtain wall-adhering air cooling and purging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122820892.8U CN216244221U (en) | 2021-11-17 | 2021-11-17 | Sliding rail movable type air curtain wall-adhering air cooling and purging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216244221U true CN216244221U (en) | 2022-04-08 |
Family
ID=80943997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122820892.8U Active CN216244221U (en) | 2021-11-17 | 2021-11-17 | Sliding rail movable type air curtain wall-adhering air cooling and purging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216244221U (en) |
-
2021
- 2021-11-17 CN CN202122820892.8U patent/CN216244221U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103759258A (en) | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor | |
| US7922480B2 (en) | Combustion apparatus and wind box | |
| CN111256111A (en) | Efficient wall-attached air system and method for preventing water-cooled wall from high-temperature corrosion of front-wall and rear-wall opposed combustion boiler | |
| CN111780106B (en) | Flameless burner of steel rolling heating furnace and application thereof | |
| CN104154532A (en) | Center air ring concentrated type turbulent burner | |
| CN108613184B (en) | Combustor capable of adjusting load and working method | |
| CN209470201U (en) | A kind of gas fired-boiler | |
| CN216244221U (en) | Sliding rail movable type air curtain wall-adhering air cooling and purging system | |
| CN112097235B (en) | Wall temperature control method for water wall during low-load operation of boiler | |
| CN111623335B (en) | Automatic cooling accurate control system and method for natural cooling of boiler | |
| CN206320784U (en) | It is a kind of to prevent the adherent wind apparatus of high speed of water wall high temperature corrosion | |
| CN113915603A (en) | Sliding rail movable type air curtain wall-adhering air cooling and purging system | |
| CN216346327U (en) | Air curtain type cooling and purging device for ash cooling bucket | |
| CN108413387B (en) | A kind of two-way double grading combustion technologies of pulverized-coal fired boiler | |
| CN201155919Y (en) | Cement rotary kiln using coal gas as fuel | |
| CN201396751Y (en) | Coal-fired boiler with controlled oxygen content in smoke | |
| CN104006405A (en) | Ceramic kiln oxygen enrichment combustion supporting and energy saving device | |
| CN215765196U (en) | Direct current secondary air chamber pressure stabilizing structure and air door baffle | |
| WO2022247039A1 (en) | Air distribution system for multistage regulation and control of air and fume | |
| CN108302525B (en) | Flow area adjustable direct-current pulverized coal burner | |
| CN210035475U (en) | Boiler burner | |
| CN114484421A (en) | Primary air chamber of direct-current combustor and method for preventing boiler slagging and high-temperature corrosion | |
| CN111690785B (en) | Top combustion type hot blast stove with central uniformly distributed burner | |
| CN109827169B (en) | Boiler low-temperature flue gas recirculation combustion system and application method thereof | |
| CN203718767U (en) | Oil/gas saving ignition stable-combustion low-nitrogen swirl pulverized coal burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |