CN218544472U - Novel hearth soot blower spray head - Google Patents
Novel hearth soot blower spray head Download PDFInfo
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- CN218544472U CN218544472U CN202222709073.0U CN202222709073U CN218544472U CN 218544472 U CN218544472 U CN 218544472U CN 202222709073 U CN202222709073 U CN 202222709073U CN 218544472 U CN218544472 U CN 218544472U
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- soot blower
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Abstract
The utility model belongs to power plant coal fired boiler soot blower equipment field, specifically speaking relates to a novel furnace soot blower shower nozzle. The utility model designs one side of the cross section of the inner surface of the nozzle of the soot blower spray head, which is close to the water wall of the hearth, as a straight section, and the soot blowing medium is sprayed out of the nozzle and then is parallel to the wall surface of the water wall, so as to reduce excessive harmful blowing loss and avoid the damage to the heated surface of the hearth; the driving device drives the spray nozzle to rotate, so that the soot blowing area can be increased. The utility model discloses reform transform the soot blower shower nozzle to on-the-spot in service behavior, simple structure, be convenient for implement, can safely effectively solve furnace and receive the serious problem that the face is blown down by the soot blower, effectively avoid the soot blower to blow down the face that receives of furnace water-cooling wall, improve the reliability of boiler operation.
Description
Technical Field
The utility model belongs to soot blower equipment field, specifically speaking relates to a novel furnace soot blower shower nozzle.
Background
The water wall of the boiler is usually provided with dozens to hundreds of hearth soot blowers, and the attachments on the water wall are removed by spraying soot blowing medium through nozzles of the hearth soot blowers. The sweeping radian, the sweeping turn number and the blowing pressure of the soot blower can be adjusted according to the property of the ash (or slag) and the soot blowing requirements of different parts of the boiler.
At present, soot blower nozzles manufactured by soot blower manufacturers in China are in a Venturi form, but the phenomenon that the heating surface is blown and damaged often appears at the near end of the soot blower nozzle is found in the actual use process. After the furnace hearth water-cooling wall is used for a period of time, the condition that local severe blowing damage is caused by excessive blowing of the soot blower is found on the heating surface of the furnace hearth water-cooling wall in the process of maintenance.
In the abnormal unplanned shutdown of the thermal power plant unit, more than 70 percent of the abnormal conditions are caused by the four-pipe explosion leakage of the boiler. Wherein, the four-tube explosion leakage accounts for more than 50 percent due to the blowing loss of the heating surface of the hearth by the soot blower, and the normal operation of the unit is threatened by the blowing loss problem of the heating surface of the hearth.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that prior art exists, the utility model aims to provide a novel furnace soot blower shower nozzle.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
the utility model provides a novel furnace soot blower shower nozzle, includes the shower nozzle body, two relative nozzles have been seted up on the lateral wall of shower nozzle body, the nozzle is hollow column, the bottom and the detachable connection of furnace soot blower drive mechanism of shower nozzle body, the nozzle is close to the internal surface of the bottom of shower nozzle body is the plane.
Preferably, the inner surface of the nozzle near the bottom of the head body is parallel to a plane where the head is installed.
Preferably, the cross section of the inner surface of the nozzle, which is far away from the hearth, is a straight section.
Preferably, the radius of the cross-section of the nozzle is gradually reduced from inside to outside and then gradually increased.
Preferably, the automatic soot blowing device further comprises a rotary joint and a driving device, a soot blowing medium intake pipe is fixedly arranged on the driving device, one end of the soot blowing medium intake pipe is detachably connected with the hearth, the other end of the soot blowing medium intake pipe is rotatably connected with a nozzle body of the rotary joint through a gear, the side wall of the nozzle body is meshed with the driving device through a gear, and a driving motor for driving the rotation of the gear is arranged on the driving device.
Preferably, a buffer cavity is arranged between the top end of the sprayer body and the spray nozzle, a buffer wall is arranged on a side wall between the buffer cavity and the spray nozzle, and the buffer wall is arc-shaped.
Compared with the prior art, the beneficial effects of the utility model are that:
the inner surface of the nozzle close to the bottom of the spray head body is set to be a plane, and the blowing direction is parallel to the plane where the spray head is arranged, so that excessive harmful blowing loss is reduced, and blowing loss of a hearth water wall tube is avoided; the side of the cross section of the inner surface of the nozzle, which is far away from the hearth, is a straight section, so that the waste of soot blowing media can be reduced, and the utilization rate of the soot blowing media is improved; the cross section of the middle section of the nozzle is smaller, so that soot blowing media can be concentrated, and the flow speed can be increased; the driving device drives the spray head to rotate, so that the soot blowing area can be increased; the practical use result shows that the spray head of the soot blower has a better soot blowing effect on the hearth. The utility model discloses reform transform the soot blower shower nozzle to on-the-spot in service behavior, simple structure, be convenient for implement, can safely effectively solve furnace and receive the serious problem that the face was blown and damaged by the soot blower, avoid the soot blower to blow and receive the face, improve equipment's reliability, the emergence of control boiler "four pipes" explosion leakage.
Drawings
FIG. 1 is a schematic structural diagram of a novel hearth soot blower nozzle in embodiment 1 of the present application;
FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic diagram of a furnace sootblower before modification;
FIG. 4 is a schematic diagram of the soot blowing of the hearth soot blower in embodiment 1 of the present application;
FIG. 5 is a schematic view of a nozzle structure of a novel furnace soot blower in embodiment 2 of the present application;
fig. 6 is a sectional view of the head body 1 from the top end to the bottom end in embodiment 3 of the present application;
in the figure: 1. a nozzle body; 2. a threaded connection; 3. a nozzle; 32. A middle section; 4. A rotary joint; 41. a connecting port; 5. A drive device; 6. A buffer chamber; 60. a buffer wall.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
As shown in fig. 1 and 2, the novel hearth soot blower nozzle comprises a nozzle body 1, a threaded connection part 2 is arranged at one end of a soot blowing medium inlet on the nozzle body 1, and two opposite nozzles 3 are arranged on the side wall of the nozzle body 1. The nozzle 3 is in a hollow rectangular cylinder shape (the section of the inner surface of the nozzle 3 is a round shape with the upper part and the lower part being cut off and is similar to a rectangle), the inner surface of the nozzle 3 close to the bottom of the sprayer body is a plane, and the inner surface of the nozzle 3 close to the bottom of the sprayer body 1 is parallel to the plane where the sprayer body 1 is arranged, so that the blowing direction of the airflow is parallel to the blowing surface; one side of the cross section of the inner surface of the nozzle 3, which is close to the hearth, is a straight section, and the side of the cross section, which is far away from the hearth, is also a straight section, so that the invalid blowing range can be reduced, and the utilization rate of a blowing medium is improved. As shown in fig. 3 and 4, the nozzle 3 in the prior art has a circular cross section, and harmful purging on one side close to the furnace water wall damages the heating surface of the furnace, which threatens the normal operation of the equipment, while the utility model reduces the damage of the soot blowing medium on the furnace water wall pipe by avoiding harmful purging range on one side close to the furnace; the nozzle 3 comprises an intermediate section 32, the section from the inlet to the inner surface of the intermediate section 32 is gradually reduced, the section from the intermediate section 32 to the inner surface of the outlet is gradually increased, the soot blowing medium can be concentrated, so that the flow rate is increased, the soot blowing medium enters the cavity of the spray head body 1 from one end of the soot blowing medium inlet of the spray head body 1, and the soot blowing medium is blown out from the nozzle 3 after sequentially passing through the inlet, the intermediate section 32 and the outlet.
Example 2
As shown in fig. 5, the difference between this embodiment and embodiment 1 is that the novel furnace soot blower nozzle further includes a rotary joint 4 and a driving device, a soot blowing medium intake pipe is fixedly arranged on the driving device 5, one end of the soot blowing medium intake pipe is a connection port 41, the connection port 41 can be in threaded connection with the furnace, and the other end of the soot blowing medium intake pipe is rotatably connected with the nozzle body 1 through the rotary joint 4; the side wall of the nozzle body 1 is fixedly connected with a driven gear (not shown in the figure), the driving device 5 is provided with a driving gear (not shown in the figure), the driving gear is meshed with the driven gear, the driving device 5 is provided with a driving motor, the driving motor is connected with the driving gear, and the nozzle body 1 can rotate along the axial direction. The connector 41 is connected with a soot blowing medium outlet on the hearth, soot blowing medium enters the spray head body 1 through the rotary joint 4 along the soot blowing medium inlet pipe, the driving motor is operated, and the driving gear rotates to drive the driven gear to rotate, so that the spray head body 1 rotates.
Example 3
As shown in fig. 6, the difference between the embodiment and embodiment 1 is that a buffer chamber 6 is disposed between the top end of the nozzle body 1 and the nozzle 3, a buffer wall 60 is disposed between the buffer chamber 6 and the nozzle 3, and the buffer wall 60 is arc-shaped, so as to facilitate air flow circulation and reduce kinetic energy loss.
Claims (6)
1. The utility model provides a novel furnace soot blower shower nozzle, its characterized in that, includes shower nozzle body (1), two relative nozzle (3) have been seted up on the lateral wall of shower nozzle body (1), nozzle (3) are hollow column, the bottom and the detachable connection of furnace soot blower drive mechanism of shower nozzle body (1), nozzle (3) are close to the internal surface of the bottom of shower nozzle body (1) is the plane.
2. A new furnace sootblower nozzle according to claim 1, characterized in that the inner surface of the nozzle (3) near the bottom of the nozzle body (1) is parallel to the plane where the nozzle body (1) is mounted.
3. A new furnace sootblower nozzle according to claim 1, characterized in that the side of the cross section of the inner surface of the nozzle (3) facing away from the furnace is a straight section.
4. A new furnace sootblower nozzle according to claim 1, characterized in that the radius of the cross section of the nozzle (3) is gradually decreasing from the inside to the outside and then gradually increasing.
5. The novel hearth soot blower nozzle according to claim 1, further comprising a rotary joint (4) and a driving device (5), wherein a soot blowing medium inlet pipe is fixedly arranged on the driving device (5), one end of the soot blowing medium inlet pipe is detachably connected with the hearth, the other end of the soot blowing medium inlet pipe is rotatably connected with a nozzle body (1) of the rotary joint (4), the side wall of the nozzle body (1) is meshed with the driving device (5) through a gear, and a driving motor for driving the rotation of a gear is arranged on the driving device (5).
6. The novel hearth soot blower nozzle according to claim 1, wherein a buffer chamber (6) is arranged between the top end of the nozzle body (1) and the nozzle (3), the side wall between the buffer chamber (6) and the nozzle (3) is a buffer wall (60), and the buffer wall (60) is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222709073.0U CN218544472U (en) | 2022-10-14 | 2022-10-14 | Novel hearth soot blower spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222709073.0U CN218544472U (en) | 2022-10-14 | 2022-10-14 | Novel hearth soot blower spray head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218544472U true CN218544472U (en) | 2023-02-28 |
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ID=85276851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222709073.0U Active CN218544472U (en) | 2022-10-14 | 2022-10-14 | Novel hearth soot blower spray head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218544472U (en) |
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2022
- 2022-10-14 CN CN202222709073.0U patent/CN218544472U/en active Active
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