A hydrophobic and waterproof hammer device for a disc dryer
By designing a pressure relief and speed reduction pipe, a pressure relief hole, and an auxiliary speed reduction component into the disc dryer, water hammer phenomenon is eliminated, equipment vibration problem is solved, and stable operation of the disc dryer is ensured.
Patent Information
- Application Number
- CN202522630082.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-11
AI Technical Summary
The water hammer phenomenon generated after the drain valve of the disc dryer causes equipment vibration, which leads to malfunctions such as cracking of the weld seam of the drain cooler and damage to the valve, affecting the stable operation of the equipment.
A water hammer prevention device for a disc dryer is designed, comprising a pressure relief and speed reduction pipe, a pressure relief hole, an auxiliary speed reduction component, and a flow divider. Through multi-stage pressure relief, speed reduction, and buffering, the flow rate and pressure of the gas-liquid mixture are reduced, thus eliminating the water hammer phenomenon.
It effectively prevents weld cracking and valve damage caused by equipment vibration, ensuring the stable operation of the disc dryer.
Smart Images
Figure CN224945188U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disc dryer technology, and in particular to a hydrophobic and waterproof hammer device for a disc dryer. Background Technology
[0002] The disc dryer is a high-efficiency drying device widely used in the treatment of municipal and industrial sludge. Its working principle is to use hollow discs as heat exchange carriers. Steam flows inside the discs, transferring heat to the wet sludge attached to the outer surface of the discs, thereby heating the sludge and evaporating the water in the sludge, thus achieving the drying treatment of the sludge.
[0003] In the disc drying process, a steam trap is generally used to drain the condensate after heat exchange, and a steam cooler is used to cool the condensate. The pressure difference between the front and back of the steam trap is large. After passing through the steam trap, the condensate changes from a liquid state to a gas-liquid mixture. The steam in the pipeline pushes the condensate into the head of the steam cooler quickly, impacting the inner wall of the head and causing violent vibration. At the same time, the steam is further depressurized and cooled in the head of the steam cooler, resulting in water hammer and causing equipment vibration. The violent vibration causes the weld of the steam cooler to crack, the body to break, and the valve to be damaged, which seriously affects the stable operation of the disc dryer. Therefore, this application provides a water hammer prevention device for the disc dryer to meet the requirements. Utility Model Content
[0004] This utility model provides a hydrophobic and waterproof hammer device for a disc dryer to solve the problem of the need to improve the operational stability of the disc dryer.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A device for preventing water hammer in a disc dryer includes a condensate cooler head. A condensate drain pipe is provided at the bottom of the condensate cooler head, and a condensate drain valve is installed on the condensate drain pipe. A pressure relief and speed reduction pipe is fixed at the top of the condensate drain pipe. A circular groove is opened at the bottom of the condensate cooler head, and the pressure relief and speed reduction pipe is fixed in the circular groove. A cover plate is fixed at the top of the pressure relief and speed reduction pipe. Pressure relief holes are opened on both the pressure relief and speed reduction pipe and the cover plate.
[0007] Preferably, the pressure relief and deceleration tube is funnel-shaped, with the top opening of the tube being larger than the bottom opening.
[0008] Preferably, the total area of the plurality of pressure relief holes is greater than or equal to twice the cross-sectional area of the pressure relief and deceleration pipe.
[0009] Preferably, the hydrophobic cooler head is further provided with an auxiliary speed reduction component, which includes a circular cover, an inclined rod fixed to the outer wall of the circular cover, the inclined rod being fixed inside the hydrophobic cooler head, and a pressure relief speed reduction pipe located inside the circular cover.
[0010] Preferably, the bottom of the circular cover is fixed with an inclined portion, and the bottom of the inclined portion is fixed with a horizontal portion. The horizontal portion is annular and has multiple through holes at its bottom.
[0011] Preferably, the inner wall of the horizontal part is fixed with an inclined part two, the inclined part one and the inclined part two are inclined in opposite directions, and the top of the inclined part two is provided with multiple notches.
[0012] Preferably, a flow divider seat is fixed at the bottom of the horizontal section corresponding to the position of the through hole.
[0013] Preferably, a V-shaped block is fixed on the inner wall of the flow divider corresponding to the position of the through hole. The V-shaped block is used to guide the gas-liquid mixture when it is discharged from the through hole.
[0014] Compared with the prior art, this utility model has at least the following beneficial effects:
[0015] In the above scheme, by setting up a pressure relief and deceleration pipe, a cover plate, and pressure relief holes, the steam condensate becomes a gas-liquid mixture after passing through the drain valve. It then enters the pressure relief and deceleration pipe through the drain pipe. The cross-sectional area of the pressure relief and deceleration pipe is larger than that of the drain pipe. The gas-liquid mixture releases pressure and reduces flow velocity within the pressure relief and deceleration pipe. Multiple pressure relief holes are opened in the pressure relief and deceleration pipe and the cover plate. After the gas-liquid mixture is depressurized and decelerated within the pressure relief and deceleration pipe, it continues to release pressure and reduce flow velocity through the pressure relief holes before entering the head of the drain cooler. Then, it enters the heat exchange section of the drain cooler for condensation. Through multiple stages of pressure release and flow velocity reduction, the flow velocity of the gas-liquid mixture entering the head of the drain cooler is reduced, thereby eliminating the water hammer phenomenon. This prevents equipment vibration from causing weld cracking, breakage, valve damage, and other malfunctions in the drain cooler, thus greatly ensuring the stable operation of the disc dryer.
[0016] By setting up a circular cover, the gas-liquid mixture discharged from the pressure relief hole impacts the inner wall of the circular cover, and is buffered again by the inner wall of the circular cover before being discharged into the hydrophobic cooler head, further reducing the impact of water hammer on the equipment.
[0017] By setting an inclined section and a horizontal section, the gas-liquid mixture enters the hood and flows to the horizontal section after being guided by the inclined section, and is discharged from the circular hole of the horizontal section, reducing the accumulation of the gas-liquid mixture in the hood, thereby ensuring that the hood can stably perform its function.
[0018] By setting the second inclined section and the notch, part of the gas-liquid mixture is discharged from the round hole, and part of the gas-liquid mixture is guided by the horizontal section to the second inclined section. After being blocked by the second inclined section, it is discharged from the notch, thus realizing the diversion of the gas-liquid mixture and effectively preventing the occurrence of water hammer, thereby ensuring the stable operation of the disc dryer.
[0019] By setting up a flow divider and a V-shaped block, the gas-liquid mixture discharged from the round hole is guided by the flow divider and discharged from both ends of the flow divider. The flow divider reduces the impact of the gas-liquid mixture on the inner wall of the hydrophobic cooler head. At the same time, the gas-liquid mixture discharged into the flow divider is guided by the V-shaped block to prevent the gas-liquid mixture from accumulating in the flow divider and ensure the smooth discharge of the gas-liquid mixture in the flow divider. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a cross-sectional view of the pressure relief and deceleration pipe of this utility model;
[0022] Figure 3 This is a three-dimensional structural diagram of the flow divider seat of this utility model;
[0023] Figure 4 This is a cross-sectional view of the circular cover of this utility model;
[0024] Figure 5 This is a three-dimensional structural diagram of the V-shaped block of this utility model.
[0025] In the diagram: 1. Drain cooler end cap; 2. Pressure relief and speed reduction pipe; 3. Cover plate; 4. Pressure relief hole; 5. Drain pipe; 6. Drain valve; 7. Auxiliary speed reduction assembly; 8. Circular cover; 9. Inclined section one; 10. Horizontal section; 11. Inclined section two; 12. Notch; 13. Through hole; 14. Flow divider seat; 15. V-block.
[0026] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation
[0027] The following is a detailed description of a hydrophobic and waterproof hammer device for a disc dryer provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.
[0028] like Figures 1-5As shown, an embodiment of this utility model provides a water-repellent and water hammer prevention device for a disc dryer, including a water-repellent cooler head 1. A water-repellent pipe 5 is provided at the bottom of the water-repellent cooler head 1, and a water-repellent valve 6 is installed on the water-repellent pipe 5. A pressure-relief and speed-reducing pipe 2 is fixed at the top of the water-repellent pipe 5. A circular groove is formed at the bottom of the water-repellent cooler head 1, and the pressure-relief and speed-reducing pipe 2 is fixed in the circular groove. A cover plate 3 is fixed at the top of the pressure-relief and speed-reducing pipe 2. Pressure relief holes 4 are formed on both the pressure-relief and speed-reducing pipe 2 and the cover plate 3. The steam condensate generated by the disc dryer passes through the water-repellent valve 6. The gas-liquid mixture enters the pressure relief and deceleration pipe 2 through the drainage pipe 5. The cross-sectional area of the pressure relief and deceleration pipe 2 is more than twice that of the drainage pipe 5. After the gas-liquid mixture enters, the pressure is released and the flow rate is greatly reduced. Subsequently, the gas-liquid mixture releases pressure and reduces flow rate again through the pressure relief and deceleration pipe 2 and multiple pressure relief holes 4 on the cover plate 3, completing multi-stage pressure relief and deceleration treatment, greatly reducing the flow rate and pressure of the gas-liquid mixture, thereby suppressing the occurrence of water hammer phenomenon, ensuring the stable operation of the disc dryer, and preventing the equipment from cracking welds and damaging components due to water hammer vibration.
[0029] like Figure 2 As shown in this embodiment, the pressure relief and deceleration pipe 2 is funnel-shaped, with the top opening of the pressure relief and deceleration pipe 2 being larger than the bottom opening. The funnel-shaped structure causes the cross-sectional area of the pressure relief and deceleration pipe 2 to gradually increase from bottom to top. After the gas-liquid mixture enters, the pressure is rapidly released, and the flow rate is greatly reduced, thus completing the initial pressure relief and deceleration treatment.
[0030] like Figure 2 As shown in this embodiment, the total area of several pressure relief holes 4 is greater than or equal to twice the cross-sectional area of the pressure relief and deceleration pipe 2. The large total area design of the pressure relief holes 4 allows the pressure to be released again and the flow rate to be further reduced when the gas-liquid mixture passes through, thereby enhancing the multi-stage pressure relief and deceleration effect.
[0031] like Figure 2 As shown in this embodiment, an auxiliary deceleration assembly 7 is also provided inside the hydrophobic cooler head 1. The auxiliary deceleration assembly 7 includes a circular cover 8, with a diagonal rod fixed to the outer wall of the circular cover 8. The diagonal rod is fixed inside the hydrophobic cooler head 1, and the pressure relief deceleration pipe 2 is located inside the circular cover 8. The circular cover 8 forms a buffer for the gas-liquid mixture discharged through the pressure relief hole 4. After the gas-liquid mixture hits the inner wall of the circular cover 8, the impact force is greatly weakened, further suppressing the water hammer effect. The diagonal rod provides a stable installation support for the circular cover 8, ensuring that it will not shift under the impact of the gas-liquid mixture, and ensuring that the auxiliary deceleration assembly 7 continues to function. The pressure relief deceleration pipe 2 is placed inside the circular cover 8, so that the gas-liquid mixture first undergoes pressure relief deceleration and then enters the buffering stage, forming a progressive water hammer treatment.
[0032] like Figure 3 and Figure 4As shown in this embodiment, the bottom of the dome 8 is fixed with an inclined portion 9, and the bottom of the inclined portion 9 is fixed with a horizontal portion 10. The horizontal portion 10 is annular, and the bottom of the horizontal portion 10 is provided with multiple through holes 13. The inclined portion 9 guides the gas-liquid mixture to flow towards the horizontal portion 10, avoiding the accumulation of the gas-liquid mixture at the bottom of the dome 8 and ensuring that it is smoothly dispersed into the multiple through holes 13. The annular horizontal portion 10 and the through holes 13 realize the initial diversion of the gas-liquid mixture, reduce the local flow velocity and impact force, further weaken the possibility of water hammer, and at the same time ensure that the gas-liquid mixture enters the subsequent processing stage evenly.
[0033] like Figure 4 As shown in this embodiment, the inner wall of the horizontal part 10 is fixed with an inclined part 2 11. The inclined part 1 9 is inclined in the opposite direction to the inclined part 2 11. The top of the inclined part 2 11 is provided with multiple notches 12. The inclined part 2 11, which is inclined in the opposite direction, forms a blockage for the gas-liquid mixture, allowing part of the gas-liquid mixture to be discharged from the notches 12. This forms a secondary diversion with the gas-liquid mixture discharged from the through hole 13. The flow rate is further reduced by the diversion method, which effectively suppresses the water hammer phenomenon. The notches 12 make the gas-liquid mixture discharge more evenly, avoid excessive local impact, and ensure that the inner wall of the hydrophobic cooler head 1 is not subjected to severe impact.
[0034] like Figure 3 and Figure 4 As shown in this embodiment, a flow divider 14 is fixed at the bottom of the horizontal part 10 corresponding to the position of the through hole 13. The flow divider 14 receives the gas-liquid mixture discharged from the through hole 13 and guides it to be discharged from both ends, reducing the direct impact of the gas-liquid mixture on the inner wall of the hydrophobic cooler head 1. At the same time, the flow divider 14 further disperses the gas-liquid mixture, reduces its flow concentration, and continuously weakens the water hammer impact force.
[0035] like Figure 5 As shown in this embodiment, a V-shaped block 15 is fixed on the inner wall of the flow divider 14 at the position corresponding to the through hole 13. The V-shaped block 15 is used to guide the gas-liquid mixture when it is discharged from the through hole 13. The V-shaped block 15 guides the gas-liquid mixture discharged from the through hole 13 to prevent the gas-liquid mixture from accumulating in the flow divider 14 and to ensure that it is discharged smoothly from both ends of the flow divider 14.
[0036] Working principle: The steam condensate generated by the disc dryer forms a gas-liquid mixture after passing through the drain valve 6. It is then transported to the pressure relief and deceleration pipe 2 through the drain pipe 5. The pressure relief and deceleration pipe 2 is funnel-shaped and its cross-sectional area is more than twice that of the drain pipe 5. After the gas-liquid mixture enters, the pressure is released and the flow rate is greatly reduced. Subsequently, the gas-liquid mixture releases pressure and reduces flow rate again through the pressure relief and deceleration pipe 2 and multiple pressure relief holes 4 on the cover plate 3, completing the initial multi-stage pressure relief and deceleration treatment.
[0037] The gas-liquid mixture discharged through the pressure relief hole 4 enters the dome 8 and first impacts the inner wall of the dome 8 to achieve buffering, further weakening the water hammer impact force. The gas-liquid mixture is guided to the horizontal part 10 through the inclined part 9 inside the dome 8. Part of the gas-liquid mixture is discharged from the through hole 13 of the horizontal part 10, while the rest is guided to the inclined part 11 through the horizontal part 10. After being blocked by the inclined part 11, it is discharged from the notch 12. The flow velocity is further reduced by the diversion method, effectively suppressing the water hammer phenomenon.
[0038] The gas-liquid mixture discharged from the through hole 13 enters the diverter seat 14. The V-shaped block 15 on the inner wall of the diverter seat 14 guides the gas-liquid mixture to prevent it from accumulating inside the diverter seat 14. At the same time, it guides the gas-liquid mixture to be discharged smoothly from both ends of the diverter seat 14, reducing the direct impact on the inner wall of the condensate cooler head 1. Finally, after multi-stage depressurization, speed reduction, buffering and diversion treatment, the gas-liquid mixture enters the condensate cooler head 1 and then flows into the heat exchange section to complete condensation. The whole process completely eliminates the water hammer phenomenon and avoids the equipment from cracking welds, breaking parts or damaging valves due to vibration, thus effectively ensuring the stable operation of the disc dryer.
[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A hydrophobic water hammer prevention device for a disc dryer, comprising a hydrophobic cooler head (1), characterized in that, The bottom of the condensate cooler head (1) is provided with a condensate pipe (5), a condensate valve (6) is installed on the condensate pipe (5), a pressure relief and speed reduction pipe (2) is fixed on the top of the condensate pipe (5), a circular groove is opened at the bottom of the condensate cooler head (1), the pressure relief and speed reduction pipe (2) is fixed in the circular groove, and a cover plate (3) is fixed on the top of the pressure relief and speed reduction pipe (2). Pressure relief holes (4) are opened on both the pressure relief and speed reduction pipe (2) and the cover plate (3).
2. The hydrophobic water hammer mitigation device for a disc dryer as claimed in claim 1, wherein, The pressure relief and deceleration tube (2) is funnel-shaped, with the top opening of the pressure relief and deceleration tube (2) being larger than the bottom opening.
3. The hydrophobic water hammer mitigation device for a disc dryer as claimed in claim 1, wherein, The total area of several of the pressure relief holes (4) is greater than or equal to twice the cross-sectional area of the pressure relief and deceleration pipe (2).
4. The hydrophobic water hammer mitigation device for a disc dryer as claimed in claim 1, wherein, The hydrophobic cooler head (1) is also provided with an auxiliary speed reduction component (7). The auxiliary speed reduction component (7) includes a dome (8). The outer wall of the dome (8) is fixed with a diagonal rod, which is fixed inside the hydrophobic cooler head (1). The pressure relief speed reduction pipe (2) is located inside the dome (8).
5. The hydrophobic water hammer mitigation device for a disc dryer as claimed in claim 4, wherein, The bottom of the dome (8) is fixed with an inclined part (9), and the bottom of the inclined part (9) is fixed with a horizontal part (10). The horizontal part (10) is annular, and the bottom of the horizontal part (10) has multiple through holes (13).
6. The hydrophobic water hammer mitigation device for a disc dryer as claimed in claim 5, wherein, The inner wall of the horizontal part (10) is fixed with an inclined part two (11), the inclined part one (9) and the inclined part two (11) are inclined in opposite directions, and the top of the inclined part two (11) has multiple notches (12).
7. The hydrophobic water hammer mitigation device for a disc dryer as claimed in claim 5, wherein, A flow divider (14) is fixed at the bottom of the horizontal part (10) corresponding to the position of the through hole (13).
8. The hydrophobic water hammer mitigation device for a disc dryer as claimed in claim 7, wherein, The inner wall of the diverter seat (14) is fixed with a V-shaped block (15) corresponding to the position of the through hole (13). The V-shaped block (15) is used to guide the gas-liquid mixture when it is discharged from the through hole (13).