CN110857777A - Inlet assembly of spray type soot blower - Google Patents
Inlet assembly of spray type soot blower Download PDFInfo
- Publication number
- CN110857777A CN110857777A CN201810957503.6A CN201810957503A CN110857777A CN 110857777 A CN110857777 A CN 110857777A CN 201810957503 A CN201810957503 A CN 201810957503A CN 110857777 A CN110857777 A CN 110857777A
- Authority
- CN
- China
- Prior art keywords
- air
- ring
- sealing
- wall box
- gate valve
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses an inlet assembly of a spray type soot blower, which is arranged at the bottom of a support frame of the spray type soot blower and comprises an inlet flange, a knife gate valve, a sealing air wall box and a lower end connecting pipe, wherein an upper valve port of the knife gate valve is connected to the bottom of the inlet flange, a lower valve port is connected to an upper opening at the top of the sealing air wall box, the lower end connecting pipe is connected to a lower opening at the bottom of the sealing air wall box, a sealing ring is arranged at the lower opening, an air ring which is hollow in the sealing air wall box is arranged in the sealing air wall box, the air ring is arranged above the sealing ring in parallel with the sealing ring, the bottom of the air ring is provided with an air outlet hole facing the sealing ring, an air. The inlet assembly provided by the invention can effectively prevent the flue gas of the hearth from escaping or flowing backwards, and has a better effect.
Description
Technical Field
The invention relates to a soot blower assembly, in particular to an inlet assembly of a spray type soot blower.
Background
As the boiler parameters are improved towards the direction of high temperature and high pressure, the capacity of the boiler is increased, and the sectional size and the height of the hearth cannot be increased in proportion, so that the sectional heat load of the hearth, the heat load of a water wall and the highest temperature in the hearth are increased along with the increase of the capacity of the boiler, the vaporization heat of water is gradually reduced, the overheating heat required by steam overheating is greatly increased, namely the proportion of the heat absorption capacity of an evaporation heating surface is reduced, and the proportion of the heat absorption capacity of a superheater is increased. From the perspective of preventing the slag from being formed on the convection heating surface, the temperature of the flue gas at the outlet of the hearth cannot be too high, which requires that a part of the superheater is arranged in the hearth to absorb the radiant heat of the flame in the furnace on one hand and absorb the heat of the radiant and convective heat transfer of the flue gas between the screens on the other hand. The requirement of high temperature of the superheated steam is ensured, the flue gas can be reduced to a certain temperature, and the convection heating surface is prevented from being overheated and slagging, so that a platen superheater is generally arranged on the top of the furnace or the number of flues of a hearth is directly increased.
The increase of the screen superheater and the hearth flue can lead to the problems of slag bonding and dust deposition on a water-cooled wall to be more prominent, the boiler slag bonding not only can influence the output, parameters and heat efficiency of a boiler and the normal operation of a suction fan, the exhaust gas temperature is increased, but also can cause vicious circle, cause serious personal and equipment accidents and cause serious economic loss.
Therefore, in the design of the boiler, in order to effectively remove the soot on the heating surface of the boiler, ensure the cleaning of the heating surface and achieve good heat transfer effect of the heating surface, a soot blower needs to be arranged on the heating surface of the boiler, but for the boiler with the additional screen superheater and the hearth flue, the conventional soot blower cannot achieve the soot blowing effect due to the limitation of the surrounding space of the boiler, and at the moment, a novel soot blower is needed to meet the soot blowing requirement, so that a spraying soot cleaning system (spraying soot blower) is generated. The spraying type soot blower is arranged at the top of the hearth, a spraying hose is sent into the hearth from an opening at the top of the hearth for spraying and sweeping, and the inlet assembly is a component which is arranged at the opening at the top of the hearth and used for preventing flue gas in the hearth from flowing backwards or escaping.
Disclosure of Invention
It is an object of the present invention to provide an inlet assembly for a sootblower of the spray type to solve the problems set forth in the background art described above.
In order to achieve the purpose, the invention provides the following technical scheme: an inlet assembly of a spray sootblower disposed at a bottom of a spray sootblower support frame, comprising:
the inlet flange is of a horn-shaped structure with a large upper part and a small lower part, and two ends of the inlet flange are opened;
the knife gate valve is arranged at the lower opening of the inlet flange;
the sealing air wall box is of a hollow cube structure, an upper opening and a lower opening which are opposite and round are arranged on the top surface and the bottom surface, the upper opening is connected to the lower end of the knife gate valve, and an air inlet pipe for inputting sealing air into the sealing air wall box is connected to the outer wall of the sealing air wall box;
the lower end connecting pipe is connected to the lower opening, and the lower end of the lower end connecting pipe extends into the hearth needing to be cleaned;
a seal ring disposed on an inner edge of the lower opening;
the air ring is fixed in the sealed air wall box through the support, the sealing ring is arranged right above the sealing ring in parallel, the air ring is an inner hollow ring body, a plurality of orientations are uniformly arranged at the bottom of the air ring, and the air inlet pipe is communicated into the air ring.
Preferably, for the inlet assembly of the spray type soot blower, a hand wheel is arranged on the knife gate valve.
Preferably, for the inlet assembly of the sootblower, the sealing ring specifically comprises:
the fixing ring is fixed on the inner edge of the lower opening, and an annular groove is annularly formed in the upper edge of the inner edge of the fixing ring;
the sealing air bag is an annular hollow bag body and is fixed in the annular groove;
and one end of the inflation tube penetrates into the sealed air bag from the top surface of the fixing ring, and the other end of the inflation tube is connected with an inflation nozzle arranged at the bottom of the sealed air wall box.
Preferably, for the inlet assembly of the spray type soot blower, the knife gate valve is a pneumatic knife gate valve.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the spray type soot blower is arranged on a platform at the top of a hearth, the inlet assembly is arranged at an opening at the top of the hearth, when the spray soot cleaning work is not carried out generally, the knife gate valve is closed, which is equivalent to that the opening at the top of the hearth is covered by a cover, the smoke can be prevented from overflowing, when the spray soot cleaning operation is required, the knife gate valve is opened, the spray hose sequentially passes through the inlet flange, the valve port of the knife gate valve, the sealing air wall box and the lower end connecting pipe to enter the hearth for soot cleaning, and at the moment, a gap is formed between the spray hose and the lower end connecting pipe, so that the smoke can flow backwards, the sealing ring is arranged for sealing again, an air ring facing the sealing ring is arranged in the sealing air wall box, high-pressure air is sent to the air ring through a blower, the high-pressure air in the air ring sweeps the, the sealing ring adopts special gasbag design, and the barrel is followed the sealing ring and is got into the back, aerifys to the sealed gasbag in the sealing ring through aerifing the air cock and makes sealed gasbag swell and form around the hose and surround, just can realize better sealed effect under the prerequisite that does not influence the hose decline. The inlet assembly provided by the invention can effectively prevent the flue gas of the hearth from escaping or flowing backwards, and has a better effect.
Drawings
Figure 1 is a schematic structural view of the present invention,
figure 2 is a schematic view of the structure of the wind ring and the sealing ring in the sealed wind wall box,
FIG. 3 is a top view of a seal ring according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an inlet assembly of a spray sootblower disposed at a bottom of a spray sootblower support frame, comprising:
the inlet flange 1 is of a horn-shaped structure with a large upper part and a small lower part, and two ends are opened;
a knife gate valve 2 disposed at a lower end opening of the inlet flange 1;
the sealing air wall box 3 is of a hollow cube structure, an upper opening and a lower opening which are opposite and round are arranged on the top surface and the bottom surface, the upper opening is connected to the lower end of the knife gate valve 2, and an air inlet pipe 4 for inputting sealing air into the sealing air wall box 3 is connected to the outer wall of the sealing air wall box;
the lower end connecting pipe 5 is connected to the lower opening, and the lower end of the lower end connecting pipe extends into the hearth needing to be cleaned;
a seal ring 6 disposed on an inner edge of the lower opening;
the air ring 7 is fixed in the sealed air wall box 3 through a support, the sealing ring 6 is arranged right above the sealing ring and parallel to the sealing ring 6, the air ring 7 is an inner hollow ring body, the bottom of the air ring is uniformly provided with a plurality of orientations, the air outlet 8 of the sealing ring is formed, and the air inlet pipe 4 is communicated into the air ring 7.
In another embodiment, a handwheel is arranged on the knife gate valve 2.
In another embodiment, the sealing ring 6 specifically comprises:
the fixing ring 9 is fixed on the inner edge of the lower opening, and an annular groove is annularly formed in the upper edge of the inner edge of the fixing ring 9;
the sealing air bag 10 is an annular hollow bag body and is fixed in the annular groove;
one end of the inflation tube 11 penetrates into the sealed air bag 10 from the top surface of the fixing ring 9, and the other end is connected with an inflation nozzle 12 arranged at the bottom of the sealed air wall box 3.
In another embodiment, the knife gate valve 2 is a pneumatic knife gate valve.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An inlet assembly of a spray sootblower is arranged at the bottom of a support frame of the spray sootblower, and is characterized by comprising:
the inlet flange is of a horn-shaped structure with a large upper part and a small lower part, and two ends of the inlet flange are opened;
the knife gate valve is arranged at the lower opening of the inlet flange;
the sealing air wall box is of a hollow cube structure, an upper opening and a lower opening which are opposite and round are arranged on the top surface and the bottom surface, the upper opening is connected to the lower end of the knife gate valve, and an air inlet pipe for inputting sealing air into the sealing air wall box is connected to the outer wall of the sealing air wall box;
the lower end connecting pipe is connected to the lower opening, and the lower end of the lower end connecting pipe extends into the hearth needing to be cleaned;
a seal ring disposed on an inner edge of the lower opening;
the air ring is fixed in the sealed air wall box through the support, the sealing ring is arranged right above the sealing ring in parallel, the air ring is an inner hollow ring body, a plurality of orientations are uniformly arranged at the bottom of the air ring, and the air inlet pipe is communicated into the air ring.
2. The inlet assembly of a sootblower of claim 1, wherein a hand wheel is provided on said knife gate valve.
3. The inlet assembly of a sootblower of claim 1, wherein said sealing ring comprises in particular:
the fixing ring is fixed on the inner edge of the lower opening, and an annular groove is annularly formed in the upper edge of the inner edge of the fixing ring;
the sealing air bag is an annular hollow bag body and is fixed in the annular groove;
and one end of the inflation tube penetrates into the sealed air bag from the top surface of the fixing ring, and the other end of the inflation tube is connected with an inflation nozzle arranged at the bottom of the sealed air wall box.
4. The inlet assembly of a sootblower of claim 1, wherein said knife gate valve is a pneumatic knife gate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810957503.6A CN110857777A (en) | 2018-08-22 | 2018-08-22 | Inlet assembly of spray type soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810957503.6A CN110857777A (en) | 2018-08-22 | 2018-08-22 | Inlet assembly of spray type soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110857777A true CN110857777A (en) | 2020-03-03 |
Family
ID=69635783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810957503.6A Pending CN110857777A (en) | 2018-08-22 | 2018-08-22 | Inlet assembly of spray type soot blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110857777A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749862A (en) * | 2010-01-22 | 2010-06-23 | 江苏太湖锅炉股份有限公司 | Soot blower structure of coal burning organic heating medium furnace |
| CN201526980U (en) * | 2009-11-19 | 2010-07-14 | 北京国电清新设备有限公司 | Flue gas damper and sealing device thereof |
| CN101943415A (en) * | 2010-09-19 | 2011-01-12 | 江苏焱鑫科技股份有限公司 | Long telescopic soot blower |
| WO2011034646A1 (en) * | 2009-09-17 | 2011-03-24 | Diamond Power International, Inc. | Sootblower isolation wall box |
| CN104110689A (en) * | 2014-07-01 | 2014-10-22 | 新疆百川电力设备有限责任公司 | Hydraulic soot blower of hearth |
| CN204041995U (en) * | 2014-08-26 | 2014-12-24 | 湖北华兴锅炉仪表制造有限公司 | A kind of floating seal for boiler sootblower wall case |
| CN205102138U (en) * | 2015-10-15 | 2016-03-23 | 武汉三宇机械有限公司 | A two malleation wall casees for soot blower |
-
2018
- 2018-08-22 CN CN201810957503.6A patent/CN110857777A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011034646A1 (en) * | 2009-09-17 | 2011-03-24 | Diamond Power International, Inc. | Sootblower isolation wall box |
| CN201526980U (en) * | 2009-11-19 | 2010-07-14 | 北京国电清新设备有限公司 | Flue gas damper and sealing device thereof |
| CN101749862A (en) * | 2010-01-22 | 2010-06-23 | 江苏太湖锅炉股份有限公司 | Soot blower structure of coal burning organic heating medium furnace |
| CN101943415A (en) * | 2010-09-19 | 2011-01-12 | 江苏焱鑫科技股份有限公司 | Long telescopic soot blower |
| CN104110689A (en) * | 2014-07-01 | 2014-10-22 | 新疆百川电力设备有限责任公司 | Hydraulic soot blower of hearth |
| CN204041995U (en) * | 2014-08-26 | 2014-12-24 | 湖北华兴锅炉仪表制造有限公司 | A kind of floating seal for boiler sootblower wall case |
| CN205102138U (en) * | 2015-10-15 | 2016-03-23 | 武汉三宇机械有限公司 | A two malleation wall casees for soot blower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207313143U (en) | Steam conveying, overheat and the cloth vapour system of activated carbon external-heating revolving activation furnace | |
| CN209489920U (en) | A kind of discharge of steam cooling system and Steam roaster | |
| CN104729081A (en) | Energy-saving type hot blast stove | |
| CN204540655U (en) | Vapor recycle adds thermal steaming box | |
| CN104848282A (en) | Range hood | |
| CN206940936U (en) | A kind of flue protector | |
| CN110857777A (en) | Inlet assembly of spray type soot blower | |
| KR20120085445A (en) | Hybrid Boiler | |
| CN204478477U (en) | A kind of energy-saving hot-air stove | |
| CN209131150U (en) | A kind of more backhaul plates of S type expansion change formula liner | |
| CN107300185B (en) | Spray head and soot blower | |
| US11448395B1 (en) | High-temperature reheater anti-friction device | |
| JPS609203B2 (en) | Structure of supercharged boiler | |
| CN210425519U (en) | Novel crude oil heating furnace | |
| CN203385190U (en) | High-heat-efficiency energy-saving heating boiler | |
| CN113739589A (en) | Integrated device is collected and handles to carborundum smelting furnace top gas | |
| CN207378790U (en) | A kind of gas steam generator | |
| CN206036986U (en) | Be applied to steam boiler's omega type flue gas and surround type heat transfer flow | |
| CN107030408A (en) | The welding method and welding tooling of a kind of boiler sootblower shower nozzle | |
| CN207945687U (en) | A kind of soot blower heat resistant and wear resistant damage spout | |
| CN216619858U (en) | Online ash removal device for biomass boiler | |
| CN208332305U (en) | A kind of closed type energy-saving flue | |
| CN107906504A (en) | A kind of economizer of energy dedusting noise reduction | |
| CN207635310U (en) | A kind of waste-heat recovery device | |
| CN220981319U (en) | Combustion water heat exchange steam water tank cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200303 |
|
| RJ01 | Rejection of invention patent application after publication |