Steam sootblower for improving the efficiency of steam sootblowing

Abstract

The utility model relates to the field of steam soot blower, concretely relates to a steam soot blower of lifting steam engine soot blowing efficiency, through setting up annular heating cavity, to the saturated steam or slight wet steam of entering carry on reheat, heating process can steam in the pipeline delivery process produce condensate water direct vaporization, from the source reduced the content of liquid water. Through setting up centrifugal separation cylinder, make steam flow high -speed rotation, produce powerful centrifugal force, the water drop of density greater will be flung to the side wall of centrifugal separation cylinder, realize steam -water separation and steam main stream separation. The problem that the steam quality control is insufficient because of traditional soot blower, leads to soot blowing not to be thorough, steam water content is high, energy consumption is big, equipment is easy to corrode has been solved.

Description

Technical Field

[0001] This utility model relates to the field of steam soot blower technology, and in particular to a steam soot blower that improves the soot blowing efficiency of a steam engine. Background Technology

[0002] Steam soot blowers are widely used online soot removal devices in industrial boilers and heat exchange equipment. Their working principle involves using high-pressure steam as the purging medium, ejecting a high-speed steam jet through nozzles to impact and remove accumulated soot particles and coke deposits from the heated surfaces, thus maintaining efficient heat exchange. Traditional steam soot blowers mainly consist of a soot blowing pipe, nozzles, and steam delivery pipelines. They typically use a steam source with fixed pressure and flow rate, reciprocating along a predetermined trajectory.

[0003] However, traditional steam soot blowers lack control during the soot blowing process, resulting in uneven steam jet coverage, blind spots, and difficulty in thoroughly removing stubborn ash deposits, thus affecting heat exchange efficiency. Secondly, if the steam is not sufficiently dehumidified and has a high moisture content, it not only weakens the purging kinetic energy but also easily causes thermal stress cracks and water erosion on high-temperature heated surfaces. Simultaneously, continuous high-flow-rate steam supply leads to energy waste and high operating energy consumption. Furthermore, wet steam and acidic condensate generated after soot blowing accelerate the corrosion of pipes and nozzles, shortening equipment lifespan and increasing maintenance costs. Therefore, improving soot blowing efficiency, reducing energy consumption, and addressing corrosion issues are urgent problems to be solved. Utility Model Content

[0004] To address the problems of incomplete soot blowing, high steam moisture content, high energy consumption, and easy corrosion of equipment caused by insufficient steam quality control in traditional soot blowers.

[0005] This utility model provides a steam soot blower for improving the soot blowing efficiency of a steam engine, including a soot blowing pipe and a nozzle, and also includes a multi-functional soot blowing head. The multi-functional soot blowing head includes an annular heating chamber and a centrifugal separator arranged sequentially from the air inlet to the air outlet. The annular heating chamber is used to reheat the incoming steam, increase the steam temperature, and evaporate condensate. The centrifugal separator is used to make the heated steam rotate at high speed, and use centrifugal force to throw the residual liquid water droplets towards the side wall of the centrifugal separator to achieve steam-water separation. The soot blowing pipe is connected to the air inlet of the multi-functional soot blowing head and is used to transport steam. The nozzle is connected to the air outlet of the multi-functional soot blowing head and is used to accelerate the ejection of the dried and heated steam.

[0006] Preferably, the annular heating cavity includes an electrically connected controller and an electric heating sleeve, the electric heating sleeve being disposed on the side wall of the annular heating cavity.

[0007] Preferably, the air inlet end of the soot blowing pipe is equipped with a shut-off valve, which is electrically connected to the controller. The shut-off valve is used to control the flow of steam.

[0008] Preferably, the centrifugal separator includes a vortex channel located on the inner side of the centrifugal separator sidewall and a hydrophobic cavity located on the outer side of the centrifugal separator sidewall. The vortex channel is provided with a tangential guide channel, which is used to guide steam to enter and form a high-speed rotating flow field. The sidewall is provided with hydrophobic micropores, which are used to discharge the condensate thrown out by centrifugal force to the hydrophobic cavity. The bottom of the hydrophobic cavity is provided with a drain outlet, which is provided with a drain valve.

[0009] Preferably, the inlet end of the nozzle is provided with a fixed sleeve, and the end of the fixed sleeve away from the nozzle is connected to the outlet end of the multi-functional soot blowing head. The inside of the fixed sleeve is provided with a rotating shaft and swirling blades. The swirling blades are connected in a ring shape at equal intervals to the side of the rotating shaft. The swirling blades are used to guide the steam to form a spiral flow.

[0010] Preferably, a steam soot blower for improving the soot blowing efficiency of a steam engine further includes a support assembly, which includes a base, a support rod, and an adjusting rod. The bottom of the support rod is fixedly connected to the base, and the support rod is provided with a rope. The adjusting rod has at least two limiting grooves on the side away from the support rod, which are used to lock the rope. The multi-functional soot blowing head is connected to the top of the adjusting rod.

[0011] Preferably, the adjusting rod has a slider on the side near the support rod, and the support rod has a groove on the side near the adjusting rod. The slider is embedded in the groove, and the adjusting rod and the support rod are slidably connected.

[0012] Preferably, the top of the limiting groove is provided with a limiting protrusion, which is used to limit the slippage of the tethering rope.

[0013] The beneficial effects of this utility model are reflected in: 1) By setting up an annular heating chamber, the incoming saturated steam or slightly moist steam is reheated. This heating process directly vaporizes the condensate generated during steam transport through pipelines, reducing the liquid water content at the source. Although the annular heating chamber requires additional energy, the resulting improvement in soot blowing efficiency outweighs the drawbacks. By using an annular heating chamber, a lower total steam flow rate can achieve the same or even better soot blowing effect, and the fuel savings from improved boiler efficiency far outweigh the heating energy consumption.

[0014] 2) Even after heating, there may still be extremely fine water droplets or water that has not been completely vaporized. By setting up a centrifugal separator, the steam flow rotates at high speed, generating a strong centrifugal force. The denser water droplets are thrown against the side wall of the centrifugal separator, thus achieving the separation of steam and water from the mainstream steam.

[0015] The steam jet dried by the multi-functional sootblowing head has a higher velocity, slower attenuation, and stronger penetration. Its stable flow pattern can more accurately cover the predetermined trajectory, reducing jet scattering and instability caused by steam moisture content and pressure fluctuations, thus effectively impacting stubborn ash deposits and reducing blind spots in sootblowing. By ensuring that dry steam is sprayed, the possibility of acidic condensate forming on the sootblowing tube, nozzle, and the purged heat exchange surface is greatly reduced, thereby significantly extending the service life of the sootblower itself and the boiler heating surface. It solves the problems of incomplete sootblowing, high steam moisture content, high energy consumption, and easy corrosion of equipment caused by insufficient steam quality control in traditional sootblowers. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a steam soot blower for improving the soot blowing efficiency of a steam engine, provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the fixing sleeve provided by this utility model along the direction perpendicular to the axis.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the multifunctional soot blowing head provided by this utility model along the axial direction.

[0019] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 5 This utility model provides a schematic block diagram of the circuit connection of a steam soot blower for improving the soot blowing efficiency of a steam engine.

[0021] In the diagram: 1-Soot blowing pipe; 11-Stop valve; 2-Nozzle; 21-Fixing sleeve; 211-Rotating shaft; 212-Swirl vane; 3-Multi-functional soot blowing head; 31-Annular heating chamber; 311-Controller; 312-Electric heating jacket; 32-Centrifugal separator; 321-Vortex channel; 3211-Terrain guide groove; 322-Drainage chamber; 3221-Drain outlet; 3222-Drain valve; 4-Support assembly; 41-Base; 42-Support rod; 421-Tether rope; 43-Adjusting rod; 431-Limiting groove; 432-Limiting protrusion. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Reference Figures 1-5 A steam soot blower for improving the soot blowing efficiency of a steam engine includes a soot blowing pipe 1 and a nozzle 2, as well as a multi-functional soot blowing head 3. The multi-functional soot blowing head 3 includes an annular heating chamber 31 and a centrifugal separator 32 arranged sequentially from the inlet end to the outlet end. The annular heating chamber 31 is used to reheat the incoming steam, increase the steam temperature and evaporate the condensate to improve the steam dryness. The heated and evaporated condensate reverts to the steam phase and continues to flow forward with other dry steam, entering the centrifugal separator 32 and the nozzle 2. The centrifugal separator 32 is used to make the heated steam rotate at high speed, using centrifugal force to throw the residual liquid water droplets toward the side wall of the centrifugal separator 32 to achieve steam-water separation. The soot blowing pipe 1 is connected to the inlet end of the multi-functional soot blowing head 3 and is used to transport steam, which comes from high-pressure steam from a steam source. The nozzle 2 is connected to the outlet end of the multi-functional soot blowing head 3 and is used to accelerate the ejection of the dried and heated steam to impact the ash accumulation on the boiler heating surface to achieve ash removal.

[0024] By setting up an annular heating chamber 31, the incoming saturated steam or slightly moist steam is reheated. This heating process directly vaporizes the condensate generated during steam transport through pipelines, reducing the liquid water content at the source. Although the annular heating chamber 31 requires additional energy, the resulting improvement in soot blowing efficiency outweighs the drawbacks. By setting up the annular heating chamber 31, the same or even better soot blowing effect can be achieved with a lower total steam flow rate, and the fuel savings from improved boiler efficiency far outweigh the heating energy consumption. Even after heating, there may still be extremely fine water droplets or incompletely vaporized water. By setting up a centrifugal separator 32, the steam flow rotates at high speed, generating a strong centrifugal force. The denser water droplets are thrown towards the side wall of the centrifugal separator 32, achieving steam-water separation and separation from the main steam flow. The steam jet dried by the multi-functional soot blowing head 3 has a higher velocity, slower attenuation, and stronger penetration. Its stable flow pattern can more accurately cover the predetermined trajectory, reducing jet scattering and instability caused by steam moisture content and pressure fluctuations, thereby effectively impacting stubborn ash deposits and reducing soot blowing blind spots. By ensuring that dry steam is ejected, the possibility of acidic condensate forming on the sootblowing pipe 1, nozzle 2, and the purged heat exchange surfaces is greatly reduced, thereby significantly extending the service life of the sootblower itself and the boiler heating surfaces. This solves the problems of incomplete sootblowing, high steam moisture content, high energy consumption, and easy corrosion of equipment caused by insufficient steam quality control in traditional sootblowers.

[0025] In some embodiments, the annular heating cavity 31 includes an electrically connected controller 311 and an electric heating sleeve 312, the electric heating sleeve 312 being disposed on the side wall of the annular heating cavity 31.

[0026] Reference Figure 5The controller 311 is connected to the electric heating jacket 312 via a temperature control circuit, enabling precise temperature control of the electric heating jacket 312. This ensures that the steam is fully heated before entering the centrifugal separator 32, maximizing the evaporation of tiny droplets and improving dryness. Compared to traditional methods that rely solely on steam heating, this design dynamically compensates for heat loss during transport, prevents condensate regeneration, avoids equipment corrosion, and improves system reliability.

[0027] In some embodiments, an infrared sensor is provided on the outer side of the centrifugal separator 32, and the infrared sensor is electrically connected to the controller 311. The infrared sensor is used to detect the dust thickness on the heated area in front of the nozzle 2 and transmits the detection signal to the controller 311 to achieve on-demand dust removal. Specifically, a connector is made of high-temperature resistant heat-insulating material. One end of the connector is connected to the centrifugal separator 32, and the other end of the connector is provided with a cavity. The infrared sensor is installed in the cavity, and the inner side of the cavity is lined with ceramic fiber cotton to further block heat radiation and heat conduction from the external environment.

[0028] In a further preferred embodiment, the air inlet end of the soot blowing pipe 1 is provided with a shut-off valve 11, which is electrically connected to the controller 311. The shut-off valve 11 is used to control the on / off of steam.

[0029] Reference Figure 5 By setting the shut-off valve 11, the controller 311 can precisely control the timing of steam on and off according to a preset program or real-time monitoring signals, such as ash thickness.

[0030] In some embodiments, the centrifugal separator 32 includes a vortex channel 321 located on the inner side of the side wall of the centrifugal separator 32 and a hydrophobic cavity 322 located on the outer side of the side wall of the centrifugal separator 32. The vortex channel 321 is provided with a tangential guide groove 3211, which is used to guide steam to enter and form a high-speed rotating flow field. The side wall is provided with hydrophobic micropores, which are used to discharge the condensate thrown out by centrifugal force to the hydrophobic cavity 322. The bottom of the hydrophobic cavity 322 is provided with a drain outlet 3221, which is provided with a drain valve 3222.

[0031] Reference Figure 3 The tangential guide channel 3211 is a spiral channel arranged around the side wall of the centrifugal separator 32, forcing steam to enter the centrifugal separator 32 tangentially and spiral along the side wall of the centrifugal separator 32 to form a rotating airflow; a low-pressure zone is formed in the center, and the dry steam flows out from the central axial outlet, while water droplets are thrown to the side wall. The water droplets flow from the hydrophobic micropores to the hydrophobic cavity 322 and collect and flow out from the drain outlet 3221. The pore size of the hydrophobic micropores is 0.2~1.0 mm, which has a capillary effect. Liquid water passes through the micropores under the action of surface tension, while steam is difficult to pass through the hydrophobic micropores under the action of surface tension barrier.

[0032] In some embodiments, the air inlet end of the nozzle 2 is provided with a fixed sleeve 21. The end of the fixed sleeve 21 away from the nozzle 2 is connected to the air outlet end of the multi-functional soot blower 3. The fixed sleeve 21 is provided with a rotating shaft 211 and a swirl vane 212 inside. The swirl vane 212 is connected in a ring shape at equal intervals to the side of the rotating shaft 211. The swirl vane 212 is used to guide the steam to form a spiral flow.

[0033] Reference Figure 2 The swirl blades 212 are used to guide steam to form a spiral flow before it is ejected, enhance jet disturbance and diffusion angle, and improve the ability to cover and remove ash from complex areas such as tube bundle gaps.

[0034] In some embodiments, a steam soot blower for improving the soot blowing efficiency of a steam engine further includes a support assembly 4. The support assembly 4 includes a base 41, a support rod 42, and an adjusting rod 43. The bottom of the support rod 42 is fixedly connected to the base 41. The support rod 42 is provided with a rope 421. The adjusting rod 43 is provided with at least two limiting grooves 431 on the side away from the support rod 42. The limiting grooves 431 are used to lock the rope. The multi-functional soot blowing head 3 is connected to the top of the adjusting rod 43.

[0035] Reference Figure 1 The support component 4 offers flexible arrangement and easy operation. By inserting the rope into the limiting grooves 431 at different positions, the height of the adjusting rod 43 can be changed, thereby altering the height of the multi-functional sootblowing head 3, optimizing the sootblowing coverage area, and reducing blind spots. Through its design, the support rod 42 and the base 41 effectively resist the reaction force of steam jets, preventing the sootblowing head from shaking or shifting when high-pressure steam is ejected.

[0036] Preferably, the adjusting rod 43 is provided with a slider on the side near the support rod 42, and the support rod 42 is provided with a groove on the side near the adjusting rod 43. The slider is embedded in the groove, and the adjusting rod 43 and the support rod 42 are slidably connected.

[0037] The cooperation between the slider and the groove makes the connection between the support rod 42 and the adjusting rod 43 more stable. When it is necessary to switch the rope to different limiting grooves 431, the groove and the slider play a guiding and limiting role, ensuring that the adjusting rod 43 moves smoothly, so that the rope can be more accurately and conveniently inserted into the target limiting groove 431.

[0038] Reference Figure 4 Preferably, the top of the limiting groove 431 is provided with a limiting protrusion 432, which is used to limit the sliding of the rope.

[0039] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this invention. It will be clearly understood by those skilled in the art that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steam soot blower for improving the soot blowing efficiency of a steam engine, comprising a soot blowing pipe and a nozzle, characterized in that: Also includes: The multi-functional soot blowing head includes an annular heating chamber and a centrifugal separation cylinder arranged sequentially from the air inlet to the air outlet. The annular heating chamber is used to reheat the incoming steam, increase the steam temperature, and evaporate the condensate. The centrifugal separator is used to rotate the heated steam at high speed, using centrifugal force to throw the residual liquid water droplets toward the side wall of the centrifugal separator, thus achieving steam-water separation; the soot blowing pipe is connected to the air inlet of the multi-functional soot blowing head and is used to transport steam; the nozzle is connected to the air outlet of the multi-functional soot blowing head and is used to accelerate the ejection of the dried and heated steam.

2. A steam soot blower for improving the soot blowing efficiency of a steam engine according to claim 1, characterized in that: The annular heating cavity includes an electrically connected controller and an electric heating sleeve, with the electric heating sleeve disposed on the side wall of the annular heating cavity.

3. A steam soot blower for improving the soot blowing efficiency of a steam engine according to claim 2, characterized in that: The air inlet of the soot blowing pipe is equipped with a shut-off valve, which is electrically connected to the controller. The shut-off valve is used to control the flow of steam.

4. A steam soot blower for improving the soot blowing efficiency of a steam engine according to claim 1 or 2, characterized in that: The centrifugal separator includes a vortex channel located on the inner side of the centrifugal separator sidewall and a hydrophobic cavity located on the outer side of the centrifugal separator sidewall. The vortex channel is provided with a tangential guide channel, which is used to guide steam to enter and form a high-speed rotating flow field. The sidewall is provided with hydrophobic micropores, which are used to discharge the condensate thrown out by centrifugal force to the hydrophobic cavity. The bottom of the hydrophobic cavity is provided with a drain outlet, which is provided with a drain valve.

5. A steam soot blower for improving the soot blowing efficiency of a steam engine according to claim 1, characterized in that: The nozzle has a fixed sleeve at the air inlet end. The end of the fixed sleeve away from the nozzle is connected to the air outlet end of the multi-functional soot blower. The fixed sleeve has a rotating shaft and swirling blades inside. The swirling blades are connected in a ring at equal intervals to the side of the rotating shaft. The swirling blades are used to guide the steam to form a spiral flow.

6. A steam soot blower for improving the soot blowing efficiency of a steam engine according to claim 1, characterized in that: It also includes a support assembly, which includes a base, a support rod, and an adjusting rod. The bottom of the support rod is fixedly connected to the base. The support rod is equipped with a rope tie. The adjusting rod has at least two limiting grooves on the side away from the support rod. The limiting grooves are used to lock the rope tie. The multi-functional blower head is connected to the top of the adjusting rod.

7. A steam soot blower for improving the soot blowing efficiency of a steam engine according to claim 6, characterized in that: The adjusting rod has a slider on the side near the support rod, and the support rod has a groove on the side near the adjusting rod. The slider is embedded in the groove, and the adjusting rod and the support rod are slidably connected.

8. A steam soot blower for improving the soot blowing efficiency of a steam engine according to claim 6, characterized in that: The top of the limiting groove is provided with a limiting protrusion, which is used to limit the sliding of the tethering rope.

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