A nozzle fixing structure for a spray layer of a thermal power desulfurization tower

Abstract

This invention relates to the field of desulfurization spray technology and discloses a nozzle fixing structure for the spray layer of a thermal power plant desulfurization tower. The structure includes a mounting plate, a snap-fit ​​sleeve mounted on the outside of the mounting plate, nozzles inserted inside the mounting plate and snap-fit ​​sleeve, a sealing sleeve inserted inside the snap-fit ​​sleeve, and screw seats mounted on both outer sides. A lead screw is inserted inside the screw seat. Guide rails are mounted on the surface of the mounting plate on both the upper and lower sides of the lead screw. A retaining shaft is mounted on the outer end of the lead screw, a transmission head is sleeved on the outside of the retaining shaft, a transmission rod is inserted inside the transmission head, and sliders are sleeved on both outer sides of the transmission rod. A transmission plate is mounted on the side of the slider facing the guide rail, and a retaining sleeve is sleeved on the outside of the guide rail, connecting the retaining sleeve to the transmission plate. A fixing arm is connected to the side of the slider facing the nozzle, and the side of the fixing arm in contact with the nozzle is equipped with protrusions and dots. This structure can quickly fix the nozzle, simultaneously achieving anti-slip and sealing, preventing slurry leakage and nozzle shaking.

Description

Technical Field

[0001] This invention relates to the field of desulfurization spraying technology, specifically to a nozzle fixing structure for the spraying layer of a thermal power plant desulfurization tower. Background Technology

[0002] The desulfurization tower in thermal power plants is a core piece of equipment in the flue gas desulfurization system. As a crucial component of the tower, the nozzle fixing effect directly impacts the uniformity of the desulfurization slurry spray and the desulfurization efficiency. Therefore, the nozzle fixing structure plays a vital role in thermal power desulfurization systems. Currently, various nozzle fixing structures are commonly used in the spray layers of thermal power desulfurization towers. These structures use appropriate fixing components to install the nozzles on the spray layer pipes, achieving stable spraying of the desulfurization slurry to meet the process requirements of flue gas desulfurization.

[0003] Existing nozzle fixing structures mostly employ bolt fastening or single snap-fit ​​methods. These structures require specialized tools for assembly and disassembly, resulting in cumbersome procedures, poor operational convenience, and hindering future nozzle maintenance and replacement. Furthermore, the sealing and fixing components in existing structures are independent, preventing synchronized fixing and sealing actions. This leads to poor sealing, allowing desulfurization slurry to leak from the nozzle-fixing connection. Leaking slurry corrodes the fixing components and spray layer pipes, shortening the structure's lifespan. In addition, existing fixing structures lack effective anti-slip positioning design. Under the conditions of high-frequency spray impact and flue gas vibration within the desulfurization tower, nozzles are prone to shaking and displacement, causing the spray angle to deviate from the preset position. This results in uneven desulfurization slurry spraying, affecting overall desulfurization efficiency and failing to meet the operational requirements of desulfurization spraying. Therefore, a nozzle fixing structure for the spray layer of a thermal power plant desulfurization tower is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a nozzle fixing structure for the spray layer of a thermal power plant desulfurization tower, thereby solving the technical problems of cumbersome fixing operations, poor sealing effect, easy nozzle shaking, and reduced desulfurization efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nozzle fixing structure for the spray layer of a desulfurization tower in thermal power plants, comprising a mounting plate, a snap-fit ​​sleeve mounted on the outside of the mounting plate, a nozzle inserted inside the mounting plate and the snap-fit ​​sleeve, and a sealing sleeve inserted inside the snap-fit ​​sleeve. The mounting plate has an insertion hole at the position corresponding to the nozzle inside. Both sides of the mounting plate are equipped with screw seats. A lead screw is inserted into the screw seat. Guide rails are installed on the surface of the mounting plate at the positions above and below the lead screw. A retaining shaft is installed on the outer end of the lead screw. A transmission head is sleeved on the outside of the retaining shaft. A transmission rod is inserted inside the transmission head. Slider blocks are sleeved on both sides of the transmission rod. A transmission plate is installed on the side of the slider facing the guide rail. A ferrule is fitted over the outside of the guide rail. The outside of the ferrule is connected to the corresponding position of the transmission plate. A fixed clamping arm is connected to the side of the slider facing the nozzle. The side of the fixed clamping arm that contacts the nozzle is equipped with protrusions and dots.

[0006] Preferably, the nozzle extends through the sealing sleeve and the insertion hole, with the diameter of the insertion hole being larger than the diameter of the nozzle and the sealing sleeve. This facilitates quick insertion and installation of the nozzle, while providing sufficient deformation space for the sealing sleeve. This ensures that the sealing sleeve fits tightly against the nozzle when the clamping arm is tightened, improving sealing performance and preventing leakage of desulfurization slurry.

[0007] Preferably, both the guide rail and the ferrule have an I-shaped cross-section, the guide rail is inclined, and the guide rail forms a V-shaped symmetrical structure with the lead screw as the axis. The I-shaped structure can prevent the ferrule from detaching from the guide rail, and the V-shaped symmetrical inclined setting can make the fixing arm close synchronously and smoothly, ensuring uniform clamping force on the nozzle and improving fixing stability.

[0008] Preferably, the fixed clamping arms are all arc-shaped structures, the protrusions are arranged on both sides of the protrusion, the cross-sectional shape of the protrusion is a triangular structure, and the position where the protrusion contacts the sealing sleeve is a rounded corner structure. The arc-shaped structure fits the outer wall of the nozzle, the triangular protrusion enhances the anti-slip effect, and the rounded corner design can avoid scratching the sealing sleeve, extend the service life of the seal, and improve the fit after clamping.

[0009] Preferably, the retaining shaft is a T-shaped shaft structure, and the retaining shaft is movably inserted into the transmission head. The operating end of the lead screw is coaxially connected to a handwheel, and a lever is installed on the outer circumferential side of the handwheel. The T-shaped retaining shaft ensures that the transmission head can rotate flexibly and will not fall off. The handwheel and lever make it easy for the operator to rotate the lead screw with less effort, simplify the nozzle fixing and disassembly operation, and improve maintenance convenience.

[0010] Preferably, the outer side of the lever of the wheel is covered with an anti-slip rubber sleeve, the outer wall of the anti-slip rubber sleeve is provided with anti-slip texture, and the anti-slip rubber sleeve and the lever are interference-fitted. The length of the anti-slip rubber sleeve is the same as the length of the lever. The anti-slip rubber sleeve and the anti-slip texture can increase the friction of the hand and avoid slipping during operation. The interference fit ensures that the rubber sleeve is not easy to fall off, further improving the convenience and safety of operation.

[0011] Preferably, the inner wall of the snap-fit ​​sleeve is circumferentially connected with positioning springs, and the number of positioning springs is at least three sets. The positioning springs are all hook-shaped structures, and the arc segments of the positioning springs are in contact with the surface of the nozzle. The hook-shaped positioning springs can pre-position the nozzle, reduce the offset during installation, and the multiple sets of springs are evenly stressed, which helps to improve the stability of the nozzle after it is fixed and reduces the risk of shaking.

[0012] Preferably, the sealing sleeve is fitted with an assembly ring on its outer surface, the outer surface of which is connected to the inner wall of the snap-fit ​​sleeve. The length of the sealing sleeve is at least twice the length of the fixed clamping arm. The assembly ring can fix the position of the sealing sleeve and prevent it from shifting. The sufficient length of the sealing sleeve can fully cover the clamping area, further enhancing the sealing effect and preventing slurry leakage from corroding the components.

[0013] Preferably, an anti-loosening washer is provided at the screw joint between the lead screw and the rotary seat. The anti-loosening washer has a corrugated structure, and the inner wall of the anti-loosening washer is in close contact with the outer wall of the lead screw. The outer wall of the anti-loosening washer abuts against the inner wall of the rotary seat. The corrugated anti-loosening washer can buffer the vibration of the lead screw and the rotary seat. The close contact structure can prevent the lead screw from loosening, ensure the stability of the clamping state of the fixed clamp arm, and adapt to the vibration conditions of the desulfurization tower.

[0014] Preferably, the inner wall of the sealing sleeve is provided with an annular groove, and an elastic metal ring is embedded inside the annular groove. The inner wall of the elastic metal ring fits against the outer wall of the nozzle, and the cross-section of the elastic metal ring is elliptical. The elastic metal ring can enhance the structural strength of the sealing sleeve, and the elliptical cross-section can better fit the outer wall of the nozzle, improve the tightness and durability of the seal, and extend the service life of the sealing sleeve.

[0015] Compared with the prior art, the present invention provides a nozzle fixing structure for the spray layer of a desulfurization tower in thermal power plants, which has the following advantages: This nozzle fixing structure for the spray layer of a thermal power plant desulfurization tower works by directly inserting the nozzle into the clamping sleeve and sealing sleeve. A rotating screw drives the transmission head to move horizontally, and under the constraint of the guide rail and clamping sleeve, the transmission plates and sliders on both sides simultaneously close the fixing arms, clamping the nozzle and securing it. As the fixing arms clamp the nozzle, they simultaneously compress the sealing sleeve, causing it to deform. This effectively blocks the leakage of desulfurization slurry, preventing corrosion of the fixing components and spray layer pipes, extending the service life of the entire fixing structure. Furthermore, the interlocking action of the protrusions and points enhances the connection stability between the nozzle and the fixing structure, preventing the nozzle from shaking or shifting under high-frequency spray impact and flue gas vibration. This ensures precise spray angles, uniform spraying of the desulfurization slurry, and improved desulfurization efficiency. Simultaneously clamping and fixing the nozzle also provides anti-slip and sealing operations, enhancing the ease of nozzle fixing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the nozzle structure of the present invention; Figure 3 This is a schematic diagram of the structure on one side of the mounting plate surface of the present invention; Figure 4 This is a schematic diagram of the transmission rod structure of the present invention; Figure 5 This is a schematic cross-sectional view of the transmission head of the present invention; Figure 6 This is a schematic diagram of the fixed clamping arm structure of the present invention; Figure 7 This is a cross-sectional view of the mounting plate and snap-fit ​​sleeve of the present invention.

[0017] In the diagram: 1. Mounting plate; 2. Snap-fit ​​sleeve; 3. Nozzle; 4. Insertion hole; 5. Rotary joint; 6. Lead screw; 61. Handwheel; 7. Guide rail; 8. Snap-fit ​​shaft; 9. Transmission head; 10. Transmission rod; 11. Snap-fit ​​sleeve; 12. Transmission plate; 13. Slider; 14. Fixed clamp arm; 141. Raised ridge; 142. Raised dot; 15. Assembly ring; 16. Sealing sleeve; 17. Positioning spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] This invention provides a technical solution: a nozzle fixing structure for the spray layer of a desulfurization tower in thermal power plants, comprising a mounting plate 1, a snap-fit ​​sleeve 2, a nozzle 3, a plug-in hole 4, a screw seat 5, a lead screw 6, a handwheel 61, a guide rail 7, a retaining shaft 8, a transmission head 9, a transmission rod 10, a snap-fit ​​sleeve 11, a transmission plate 12, a slider 13, a fixing clamp arm 14, a protruding ridge 141, a protruding point 142, an assembly ring 15, a sealing sleeve 16, and a positioning spring 17. Please see Figure 1 Mounting plate 1 has a snap-fit ​​sleeve 2 mounted on its exterior. Please refer to [link / reference]. Figure 2 The nozzle 3 is inserted inside the mounting plate 1 and the snap-fit ​​sleeve 2. Please refer to [link / reference]. Figure 7 The snap-fit ​​sleeve 2 has a sealing sleeve 16 inserted inside. Please refer to [link / reference]. Figure 3The mounting plate 1 has a insertion hole 4 at the position corresponding to the nozzle 3 inside. Both sides of the mounting plate 1 are equipped with a screw seat 5. A lead screw 6 is inserted into the screw seat 5. Guide rails 7 are installed on the surface of the mounting plate 1 at the positions above and below the lead screw 6.

[0020] Please see Figure 5 The retaining shaft 8 is installed on the outer end of the lead screw 6, and the transmission head 9 is sleeved on the outside of the retaining shaft 8. Please refer to [link / reference]. Figure 3 The transmission head 9 has a transmission rod 10 inserted inside it. Please refer to [link / reference]. Figure 4 Both sides of the transmission rod 10 are fitted with sliders 13, and the sliders 13 are fitted with transmission plates 12 on the side facing the guide rail 7.

[0021] The sleeve 11 is fitted onto the outside of the guide rail 7, and the outside of the sleeve 11 is connected to the corresponding position of the transmission plate 12. A fixing arm 14 is connected to the side of the slider 13 facing the nozzle 3. (See also...) Figure 6 The fixed clamping arm 14 is provided with a protruding ridge 141 and a protruding point 142 on the side that contacts the nozzle 3. The fixed clamping arm 14 is an arc-shaped structure. The protruding point 142 is arranged on both sides of the protruding ridge 141. The cross-sectional shape of the protruding ridge 141 is a triangular structure, and the position where the protruding ridge 141 contacts the sealing sleeve 16 is a rounded corner structure.

[0022] By directly inserting the nozzle 3 into the clamping sleeve 2 and the sealing sleeve 16, and then rotating the screw 6 to drive the transmission head 9 to move horizontally, and under the limit of the guide rail 7 and the clamping sleeve 11, the transmission plates 12 and the slider 13 on the upper and lower sides drive the fixed clamping arm 14 to close synchronously, so that the nozzle 3 can be clamped and fixed. When the fixed clamping arm 14 clamps and fixes the nozzle 3, it will simultaneously squeeze the sealing sleeve 16, causing it to deform, which can effectively block the leakage of desulfurization slurry, avoid the slurry from corroding the fixed parts and the spray layer pipes, and extend the service life of the entire fixed structure. It can also enhance the connection stability between the nozzle 3 and the fixed structure through the interlocking action of the protrusion 141 and the protrusion 142, prevent the nozzle 3 from shaking or shifting under the impact of high-frequency spraying and flue gas vibration, ensure the accuracy of the spraying angle, ensure the uniform spraying of desulfurization slurry, and improve the desulfurization efficiency. This allows the anti-slip and sealing operation to be completed at the same time as clamping and fixing the nozzle 3, improving the convenience of the operation when fixing the nozzle 3.

[0023] The nozzle 3 extends through the sealing sleeve 16 and the insertion hole 4. The diameter of the insertion hole 4 is larger than the diameter of the nozzle 3 and the sealing sleeve 16. The guide rail 7 and the ferrule 11 have I-shaped cross sections. The guide rail 7 is inclined and forms a V-shaped symmetrical structure with the lead screw 6 as the axis.

[0024] The retaining shaft 8 has a T-shaped shaft structure and is internally connected to the transmission head 9. The operating end of the lead screw 6 is coaxially connected to a handwheel 61, and a lever is installed on the outer circumferential side of the handwheel 61. The lever of the handwheel 61 is covered with an anti-slip rubber sleeve, and the outer wall of the anti-slip rubber sleeve is provided with anti-slip texture. The anti-slip rubber sleeve and the lever are interference fit. The length of the anti-slip rubber sleeve is the same as the length of the lever. The inner wall of the retaining sleeve 2 is circumferentially connected with a positioning spring 17, and the number of positioning springs 17 is at least three sets. The positioning springs 17 are all hook-shaped structures, and the arc segments of the positioning springs 17 are in contact with the surface of the nozzle 3.

[0025] An assembly ring 15 is fitted around the outer side of the sealing sleeve 16. The outer surface of the assembly ring 15 is connected to the inner wall of the snap-fit ​​sleeve 2. The length of the sealing sleeve 16 is at least twice the length of the fixed clamp arm 14. An anti-loosening washer is fitted at the screw joint between the lead screw 6 and the screw seat 5. The anti-loosening washer has a wave-shaped structure. The inner wall of the anti-loosening washer is tightly fitted to the outer wall of the lead screw 6. The outer wall of the anti-loosening washer abuts against the inner wall of the screw seat 5. An annular groove is circumferentially formed on the inner wall of the sealing sleeve 16. An elastic metal ring is embedded inside the annular groove. The inner wall of the elastic metal ring is fitted to the outer wall of the nozzle 3. The cross-section of the elastic metal ring is elliptical.

[0026] This solution involves directly inserting the nozzle 3 into the clamping sleeve 2 and the sealing sleeve 16, then rotating the lead screw 6 to drive the transmission head 9 to move horizontally. Under the limit of the guide rail 7 and the clamping sleeve 11, the transmission plates 12 and the slider 13 on both sides drive the fixed clamping arm 14 to close synchronously, thus clamping the nozzle 3 and completing the fixation. When the fixed clamping arm 14 clamps and fixes the nozzle 3, it will simultaneously squeeze the sealing sleeve 16, causing it to deform. This can effectively block the leakage of desulfurization slurry, avoid the slurry from corroding the fixed components and the spray layer pipes, and extend the service life of the entire fixed structure. Furthermore, the interlocking action of the protrusion 141 and the protrusion 142 can enhance the connection stability between the nozzle 3 and the fixed structure, prevent the nozzle 3 from shaking or shifting under the impact of high-frequency spraying and flue gas vibration, ensure accurate spraying angle, ensure uniform spraying of desulfurization slurry, and improve desulfurization efficiency. This solution can simultaneously clamp and fix the nozzle 3 and perform anti-slip and sealing operations, improving the ease of operation when fixing the nozzle 3.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nozzle fixing structure for the spray layer of a desulfurization tower in a thermal power plant, comprising a mounting plate (1), a snap-fit ​​sleeve (2) mounted on the outside of the mounting plate (1), a nozzle (3) inserted inside the mounting plate (1) and the snap-fit ​​sleeve (2), and a sealing sleeve (16) inserted inside the snap-fit ​​sleeve (2), characterized in that: The mounting plate (1) has a plug hole (4) at the position corresponding to the nozzle (3) inside. Both sides of the mounting plate (1) are equipped with a screw seat (5). A lead screw (6) is inserted inside the screw seat (5). Guide rails (7) are installed on the surface of the mounting plate (1) at the positions above and below the lead screw (6). A locking shaft (8) is installed on the outer end of the lead screw (6). A transmission head (9) is sleeved on the outside of the locking shaft (8). A transmission rod (10) is inserted inside the transmission head (9). Slider (13) is sleeved on both sides of the transmission rod (10). A transmission plate (12) is installed on the side of the slider (13) facing the guide rail (7). The sleeve (11) is fitted on the outside of the guide rail (7). The outside of the sleeve (11) is connected to the corresponding position of the transmission plate (12). The slider (13) is connected to a fixed clamping arm (14) on the side facing the nozzle (3). The fixed clamping arm (14) is equipped with a protrusion (141) and a protrusion (142) on the side that contacts the nozzle (3).

2. The nozzle fixing structure for the spray layer of a desulfurization tower in a thermal power plant according to claim 1, characterized in that: The nozzle (3) extends through the sealing sleeve (16) and the insertion hole (4) from the outside. The diameter of the insertion hole (4) is larger than the diameter of the nozzle (3) and the sealing sleeve (16).

3. The nozzle fixing structure for the spray layer of a desulfurization tower in thermal power plants according to claim 1, characterized in that: The cross-sections of the guide rail (7) and the sleeve (11) are both I-shaped structures. The guide rail (7) is inclined and forms a V-shaped symmetrical structure with the lead screw (6) as the axis.

4. The nozzle fixing structure for the spray layer of a desulfurization tower in a thermal power plant according to claim 1, characterized in that: The fixed clamping arms (14) are all arc-shaped structures. The protrusions (142) are arranged on both sides of the protrusion (141). The cross-sectional shape of the protrusion (141) is triangular, and the position where the protrusion (141) contacts the sealing sleeve (16) is rounded.

5. A nozzle fixing structure for the spray layer of a desulfurization tower in thermal power plants according to claim 1, characterized in that: The clasp (8) is a T-shaped shaft structure. The clasp (8) is internally connected to the transmission head (9). The operating end of the lead screw (6) is coaxially connected to a handwheel (61), and a lever is installed on the outer circumferential side of the handwheel (61).

6. A nozzle fixing structure for the spray layer of a desulfurization tower in thermal power plants according to claim 5, characterized in that: The handwheel (61) has an anti-slip rubber sleeve on the outside of the lever. The outer wall of the anti-slip rubber sleeve has anti-slip texture, and the anti-slip rubber sleeve is interference-fitted with the lever. The length of the anti-slip rubber sleeve is the same as the length of the lever.

7. The nozzle fixing structure for the spray layer of a desulfurization tower in a thermal power plant according to claim 1, characterized in that: The inner wall of the snap sleeve (2) is circumferentially connected with positioning springs (17), and the number of positioning springs (17) is at least three sets. The positioning springs (17) are all hook-shaped, and the arc segments of the positioning springs (17) are in contact with the surface of the nozzle (3).

8. The nozzle fixing structure for the spray layer of a desulfurization tower in a thermal power plant according to claim 1, characterized in that: The sealing sleeve (16) is fitted with an assembly ring (15), the outer surface of which is connected to the inner wall of the snap sleeve (2), and the length of the sealing sleeve (16) is at least twice the length of the fixed clamp arm (14).

9. A nozzle fixing structure for the spray layer of a desulfurization tower in thermal power plants according to claim 1, characterized in that: An anti-loosening washer is fitted at the screw joint between the lead screw (6) and the screw seat (5). The anti-loosening washer has a wave-shaped structure. The inner wall of the anti-loosening washer is tightly fitted with the outer wall of the lead screw (6), and the outer wall of the anti-loosening washer abuts against the inner wall of the screw seat (5).

10. A nozzle fixing structure for the spray layer of a desulfurization tower in a thermal power plant according to claim 1, characterized in that: The inner wall of the sealing sleeve (16) is provided with an annular groove, and an elastic metal ring is embedded inside the annular groove. The inner wall of the elastic metal ring is in contact with the outer wall of the nozzle (3), and the cross-section of the elastic metal ring is elliptical.

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