CN210511731U - Steam slag blowing nozzle of bagasse boiler grate - Google Patents
Steam slag blowing nozzle of bagasse boiler grate Download PDFInfo
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- CN210511731U CN210511731U CN201921541274.6U CN201921541274U CN210511731U CN 210511731 U CN210511731 U CN 210511731U CN 201921541274 U CN201921541274 U CN 201921541274U CN 210511731 U CN210511731 U CN 210511731U
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Abstract
The utility model discloses a steam slag blowing nozzle of a bagasse boiler grate, which comprises a nozzle head, wherein the nozzle head is shaped like a semi-cylinder; one side of the nozzle head in the shape of a semi-cylinder is provided with a flat nozzle; the lower part of the nozzle head is provided with a square column body limiting body, the lower part of the square column body limiting body is provided with a locking thread body, and the lower part of the locking thread body is provided with a steam pipe connecting body; the diameter of the square column body limiting body is smaller than the width of the nozzle head and larger than the diameter of the locking thread body; the steam channel runs through the nozzle head from the bottom of the steam pipe connecting body and is communicated with the nozzle. The nozzle can realize slag blowing of the fire grate by using steam with lower pressure to avoid the blockage of the air holes.
Description
Technical Field
The utility model relates to the technical field of boiler equipment, in particular to a steam slag blowing nozzle of a grate of a bagasse boiler.
Background
Bagasse is a waste product produced in the sugar production process, but is also a valuable fuel energy source. If the waste is directly discarded as industrial waste, the energy is wasted, and the environment is polluted; therefore, bagasse is used as a boiler fuel at present, so that steam generated by a boiler is used for power supply and steam supply, and finally, not only is energy reasonably utilized, but also the social environment is protected.
However, the bagasse has high moisture content and low calorific value, so that the melting point of ash slag generated by combustion is low, the ash slag is easy to block the air opening on the grate, on one hand, the bagasse is difficult to be fully combusted, on the other hand, the surface of the grate is coked and heat is accumulated, and the service life of the grate is finally influenced. The conventional large-scale grate is adopted as the grate of the conventional bagasse boiler, the structure of the grate is complex, the cost is high, and the surface of the grate is easy to coke and accumulate heat, so that the service life of the grate is short, and the grate is gradually eliminated by the market. The other is a water-cooled grate, although the surface temperature of the grate can be reduced through water circulation, the service life of the grate is prolonged, the temperature in a hearth can be reduced, so that chain effects of incomplete drying of bagasse, insufficient combustion, high carbon content of fly ash and the like are caused, a large amount of fly ash and insufficiently combusted bagasse are coked on the grate surface, each air port is blocked, and finally the thermal efficiency of the boiler is very low.
In view of this, people have developed a steam slag-blowing type bagasse boiler, which is to install a nozzle on a boiler grate, and blow bagasse on the grate by using steam through the nozzle, so as to avoid blockage of a grate hole, thereby improving the thermal efficiency of the boiler, avoiding phenomena of coking, heat accumulation and the like on the grate surface, and further prolonging the service life of the grate. Researches show that the steam pressure required by the nozzles installed and used on the existing grate is large, and the slag blowing effect is not obvious.
Disclosure of Invention
The utility model aims at providing a bagasse boiler grate's steam blows sediment nozzle, this nozzle need less pressure steam just can realize blowing the sediment of grate and avoid the wind hole to be blockked up, blow the sediment effective area extensively, be difficult for having the dead angle.
In order to realize the purpose of the utility model, the technical scheme who takes is:
a steam slag blowing nozzle of a grate of a bagasse boiler comprises a nozzle head, wherein the nozzle head is in a semi-cylindrical shape; one side of the nozzle head in the shape of a semi-cylinder is provided with a flat nozzle; the lower part of the nozzle head is provided with a square column body limiting body, the lower part of the square column body limiting body is provided with a locking thread body, and the lower part of the locking thread body is provided with a steam pipe connecting body; the diameter of the square column body limiting body is smaller than the width of the nozzle head and larger than the diameter of the locking thread body; the steam channel runs through the nozzle head from the bottom of the steam pipe connecting body and is communicated with the nozzle. The length of the square column limiting body is smaller than or equal to the depth of the square counter bore for mounting the fire grate spray head, the square column limiting body and the square counter bore for mounting the fire grate spray head are in clearance fit, a spray nozzle is inserted into the square counter bore for mounting the spray head from the upper part of the fire grate during mounting, the nozzle head is clamped on the surface of the fire grate, the square column limiting body extends into the square counter bore for mounting the spray head, and finally the spray nozzle is fixed on the fire grate through a spring washer and a nut which are mounted on the locking thread body; connecting the steam pipe connecting body with the steam conveying pipe; by adopting the structure, the nozzle can be stably arranged on the surface of the fire grate and is not easy to shift.
The steam channel is a circular steam channel, the aperture of the steam channel is smaller than the width of the nozzle, and the steam channel is communicated with the two sides of the nozzle in a gradual transition mode.
The connecting surface of the lower part of the nozzle and the steam channel is horizontal, the connecting surface of the upper part of the nozzle and the steam channel is inclined upwards by 3-5 degrees, the nozzle is inclined upwards towards the side of the steam channel, and the intersection of the nozzle and the steam channel is in arc transition. The nozzle and the steam channel are arranged in such a way, steam can be sprayed out from the nozzle in a diffusion mode, the spraying is powerful, the effective slag blowing area is wide, the nozzles are combined for use, and dead angles are not prone to existing.
The edges and corners of two ends and two sides of the semi-cylindrical nozzle head are polished smoothly, and one end of the semi-cylindrical nozzle head, which is not provided with the nozzle, is arranged into a hemispherical surface. Because the fire grate in the boiler furnace occasionally needs manual rake scraping, the nozzle head is arranged like this, the manual rake scraping is not easy to be blocked.
The steam slag blowing nozzle of the bagasse boiler grate has the following advantages:
1. the lower part of a nozzle head of the nozzle is provided with a square column body limiting body, the lower part of the square column body limiting body is provided with a locking thread body, and the lower part of the locking thread body is provided with a steam pipe connecting body; the diameter of the square column body limiting body is smaller than the width of the nozzle head and larger than the diameter of the locking thread body; steam channels are arranged in the square column body limiting body, the locking thread body and the steam pipe connecting body, penetrate through the bottom of the steam pipe connecting body to the nozzle head and are communicated with the nozzle; the length of the square column limiting body is smaller than or equal to the depth of the square counter bore for mounting the fire grate spray head, the square column limiting body and the square counter bore for mounting the fire grate spray head are in clearance fit, a spray nozzle is inserted into the square counter bore for mounting the spray head from the upper part of the fire grate during mounting, the nozzle head is clamped on the surface of the fire grate, the square column limiting body extends into the square counter bore for mounting the spray head, and finally the spray nozzle is fixed on the fire grate through a spring washer and a nut which are mounted on the locking thread body; connecting the steam pipe connecting body with the steam conveying pipe; by adopting the structure, the nozzle can be stably arranged on the surface of the fire grate and is not easy to shift.
2. The nozzle head of the nozzle is semi-cylindrical; one side of the nozzle head which is in a semi-cylindrical shape is provided with a flat nozzle, the steam channel is a circular steam channel, the aperture of the steam channel is smaller than the width of the nozzle, the two sides of the steam channel and the nozzle are communicated in a gradual transition mode, the connection surface of the nozzle and the lower part of the steam channel is in a horizontal shape, the connection surface of the nozzle and the upper part of the steam channel is inclined upwards by an angle of 3-5 degrees, the nozzle inclines upwards towards the side of the steam channel, and the intersection of the nozzle and the steam. The nozzle and the steam channel are arranged in such a way, steam can be sprayed out from the nozzle in a diffusion mode, the spraying is powerful, the effective slag blowing area is wide, the nozzles are combined for use, and dead angles are not prone to existing.
3. The edges and corners at two ends and two sides of the nozzle head which is in a semi-cylindrical shape are polished smoothly, and the grate is not easy to be stuck when being scraped and harrowed manually.
Drawings
FIG. 1 is a schematic structural view of a steam slag blowing nozzle of a grate of the bagasse boiler;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a schematic view of the installation of the steam slag blowing nozzle of the grate of the bagasse boiler on the grate;
the part names of the sequence numbers in the figure are:
1. the steam nozzle comprises a nozzle head, 2, a nozzle, 3, a square column limiting body, 4, a locking thread body, 5, a steam channel, 6, a steam pipe connecting body, 7, a nut, 8 and a spring washer.
Detailed Description
For a more clear description of the present technology, the present technology is further described in detail below with reference to the accompanying drawings and examples.
Example 1
A steam slag blowing nozzle of a grate of a bagasse boiler comprises a nozzle head 1, wherein the nozzle head 1 is in a semi-cylindrical shape; one side of the nozzle head 1 which is in a semi-cylindrical shape is provided with a flat nozzle 2; the lower part of the nozzle head 1 is provided with a square column body limiting body 3, the lower part of the square column body limiting body 3 is provided with a locking screw thread body 4, and the lower part of the locking screw thread body 4 is provided with a steam pipe connecting body 6; the diameter of the square column body limiting body 3 is smaller than the width of the nozzle head 1 and larger than the diameter of the locking thread body 4; the square column body limiting body 3, the locking threaded body 4 and the steam pipe connecting body 6 are internally provided with a steam channel 5, and the steam channel 5 penetrates through the bottom of the steam pipe connecting body 6 to the nozzle head 1 and is communicated with the nozzle 2. The length of the square column limiting body 3 is smaller than or equal to the depth of the square counter bore for mounting the fire grate spray head, the square column limiting body 3 is in clearance fit with the square counter bore for mounting the fire grate spray head, a spray nozzle is inserted into the square counter bore for mounting the spray head from the upper part of the fire grate during mounting, the nozzle head 1 is clamped on the surface of the fire grate, the square column limiting body 3 extends into the square counter bore for mounting the spray head, and finally the spray nozzle is fixed on the fire grate through a spring washer 8 and a nut 7 which are mounted on the locking threaded body 4; the steam pipe connecting body 6 is connected with the steam conveying pipe.
Example 2
A steam slag blowing nozzle of a grate of a bagasse boiler comprises a nozzle head 1, wherein the nozzle head 1 is in a semi-cylindrical shape; one side of the nozzle head 1 which is in a semi-cylindrical shape is provided with a flat nozzle 2; the lower part of the nozzle head 1 is provided with a square column body limiting body 3, the lower part of the square column body limiting body 3 is provided with a locking screw thread body 4, and the lower part of the locking screw thread body 4 is provided with a steam pipe connecting body 6; the diameter of the square column body limiting body 3 is smaller than the width of the nozzle head 1 and larger than the diameter of the locking thread body 4; the square column body limiting body 3, the locking threaded body 4 and the steam pipe connecting body 6 are internally provided with a steam channel 5, and the steam channel 5 penetrates through the bottom of the steam pipe connecting body 6 to the nozzle head 1 and is communicated with the nozzle 2. The length of the square column limiting body 3 is smaller than or equal to the depth of the square counter bore for mounting the fire grate spray head, the square column limiting body 3 is in clearance fit with the square counter bore for mounting the fire grate spray head, a spray nozzle is inserted into the square counter bore for mounting the spray head from the upper part of the fire grate during mounting, the nozzle head 1 is clamped on the surface of the fire grate, the square column limiting body 3 extends into the square counter bore for mounting the spray head, and finally the spray nozzle is fixed on the fire grate through a spring washer and a nut which are arranged on the locking thread body 4; the steam pipe connecting body 6 is connected with the steam conveying pipe.
The steam channel 5 is a circular steam channel, the aperture of the steam channel is smaller than the width of the nozzle 2, and the two sides of the steam channel 5 and the nozzle 2 are in gradual transition communication.
The connecting surface of the lower part of the nozzle 2 and the steam channel 5 is horizontal, the connecting surface of the upper part of the nozzle 2 and the steam channel 5 is inclined upwards by 3-5 degrees, the nozzle inclines upwards towards the steam channel side, and the intersection of the nozzle 2 and the steam channel 5 is in arc transition. The nozzle and the steam channel are arranged in such a way, steam can be sprayed out from the nozzle in a diffused mode, the spraying is powerful, the spraying radiation surface is wide, and dead angles are not prone to existing.
The edges and corners of both ends and both sides of the nozzle head 1 in the shape of a semi-cylinder are polished smoothly. Because the fire grate in the boiler furnace occasionally needs manual rake scraping, the nozzle head is arranged like this, the manual rake scraping is not easy to be blocked.
Application examples
1. The slag blowing nozzle is installed on a grate of a 120-ton boiler of a sugar refinery in Thailand by a company in Guangxi, saturated steam is adopted, and the working pressure is 2.45 Mpa; the required steam is directly led from the auxiliary steam pipe of the boiler barrel and enters the steam header after passing through the pressure reducing valve. The boiler is continuously used for two squeezing seasons, the air holes of the fire grate are not blocked, and the surface of the fire grate is hardly coked.
The above description is not intended to limit the present application, and the present application is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present application.
Claims (4)
1. The utility model provides a bagasse boiler grate's steam blows sediment nozzle which characterized in that: comprises a nozzle head (1), wherein the nozzle head (1) is semi-cylindrical; one side of the nozzle head (1) which is in a semi-cylindrical shape is provided with a flat nozzle (2); a square column body limiting body (3) is arranged at the lower part of the nozzle head (1), a locking threaded body (4) is arranged at the lower part of the square column body limiting body (3), and a steam pipe connecting body (6) is arranged at the lower part of the locking threaded body (4); the diameter of the square column body limiting body (3) is smaller than the width of the nozzle head (1) and larger than the diameter of the locking thread body (4); the square cylinder limiting body (3), the locking threaded body (4) and the steam pipe connecting body (6) are internally provided with steam channels (5), and the steam channels (5) penetrate through the bottom of the steam pipe connecting body (6) to the nozzle head (1) and are communicated with the nozzle (2).
2. The steam slag blowing nozzle of the bagasse boiler grate as claimed in claim 1, wherein: the steam channel (5) is a circular steam channel, the aperture of the steam channel is smaller than the width of the nozzle (2), and the two sides of the steam channel (5) and the nozzle (2) are communicated in a gradual transition mode.
3. The bagasse boiler grate steam slag blowing nozzle according to claim 2, characterized in that: the nozzle (2) is connected with the lower part of the steam channel (5) horizontally, the upper part of the nozzle (2) is connected with the upper part of the steam channel (5) at an angle of 3-5 degrees in an upward inclining mode, the nozzle inclines upwards towards the steam channel, and the intersection of the nozzle and the steam channel (5) is in arc transition.
4. The steam slag blowing nozzle of the bagasse boiler grate as claimed in claim 1, wherein: the edges and corners at two ends and two sides of the nozzle head (1) which is in a semi-cylindrical shape are polished smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541274.6U CN210511731U (en) | 2019-09-17 | 2019-09-17 | Steam slag blowing nozzle of bagasse boiler grate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541274.6U CN210511731U (en) | 2019-09-17 | 2019-09-17 | Steam slag blowing nozzle of bagasse boiler grate |
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| CN210511731U true CN210511731U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921541274.6U Active CN210511731U (en) | 2019-09-17 | 2019-09-17 | Steam slag blowing nozzle of bagasse boiler grate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486741A (en) * | 2019-09-17 | 2019-11-22 | 广西联源机械化工有限公司 | A kind of steam of bagasse boiler fire grate blows slag nozzle |
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2019
- 2019-09-17 CN CN201921541274.6U patent/CN210511731U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486741A (en) * | 2019-09-17 | 2019-11-22 | 广西联源机械化工有限公司 | A kind of steam of bagasse boiler fire grate blows slag nozzle |
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