Discharged material collecting bin
By designing a split jacket and monitoring components in the discharge collection bin of the fluidized bed production equipment, the problem of cooling water leakage caused by weld micro-cracks was solved, improving the safety and heat exchange efficiency of the equipment and avoiding the impact of hidden leaks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING KENING VACUUM TECHNOLOGY CO LTD
- Filing Date
- 2026-03-18
- Publication Date
- 2026-04-21
AI Technical Summary
Micro-cracks are prone to occur at the weld seams of the discharge collection bins of fluidized bed production equipment, leading to cooling water leakage, which affects equipment safety and product quality, and the hidden leakage is difficult to detect in time.
The cooling water and weld are separated, and a split jacket and monitoring components are used. The cylindrical shell and conical shell are connected by a bend pipe. The monitoring components detect the weld pressure in real time, avoid contact between the cooling water and the weld, and detect leaks in time.
It effectively avoids leakage problems caused by micro-cracks in the weld, improves the heat exchange efficiency and safety of the equipment, and reduces the risk of unplanned downtime.
Smart Images
Figure CN224146799U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of collection bin technology, specifically a discharge collection bin. Background Technology
[0002] The discharge collection bin in fluidized bed production equipment is a device for the continuous collection and output of solid materials, undertaking the key functions of temporary storage of high-temperature materials, heat conduction and stable output.
[0003] The main structure of the discharge collection bin consists of a bin body (a straight cylinder and a conical cylinder welded together) and a jacket covering the outside of the bin body. Cooling water circulates within the jacket and quickly removes heat from the surface of the bin body through heat exchange, ensuring that the equipment operates continuously and stably under high-temperature conditions.
[0004] However, weld seams inevitably exist at the welding joint between the straight cylinder and the conical cylinder. These weld seams are completely enclosed inside the cooling jacket and are exposed to temperature fluctuations over a long period of time. Due to the cyclic action of thermal stress, microcracks are easily generated in the weld seam area, which becomes a major hidden danger to the safe operation of the equipment.
[0005] Once microcracks form, they initially appear as extremely small gaps, causing high-pressure gas inside the chamber to slowly leak into the jacket cavity, making the leak difficult to detect in time. As the cracks expand, cooling water will seep back into the chamber through the gaps, directly contacting the high-temperature solid materials and causing a chain reaction such as material contamination and even production interruption.
[0006] The aforementioned technical defects not only affect the stability of product quality, but also cause equipment damage accumulation due to hidden leaks, ultimately leading to unplanned downtime or safety accidents. Therefore, in order to solve the above problems, a discharge collection bin is proposed. Utility Model Content
[0007] The purpose of this invention is to provide a discharge collection bin that separates the cooling water and the weld seam, and monitors the pressure of the weld seam, thereby solving the problems mentioned in the background art.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A discharge collection bin includes a straight cylindrical body and a conical cylindrical body welded together. A cylindrical shell is fixedly installed on the circumferential side of the straight cylindrical body, and a conical shell is fixedly installed on the circumferential side of the conical cylindrical body. A bent pipe is installed connecting the cylindrical shell and the conical shell. A water inlet pipe is installed at the upper end of the circumferential side of the cylindrical shell, and a drain pipe is installed at the lower end of the circumferential side of the conical shell. A through groove is opened on the circumferential side of both the cylindrical shell and the conical shell, and a heat exchanger is installed in each through groove. A monitoring component is installed between the cylindrical shell and the conical shell.
[0010] Specifically, the heat exchanger is arranged in several layers along the vertical direction, and each layer has 1 to 4 heat exchangers distributed along the circumference.
[0011] Specifically, the heat exchanger includes a connecting seat and fins fixedly installed together. The fins are inserted into the through slot and assembled. The connecting seat is connected to the cylindrical shell or conical shell by bolts. The end of the fin away from the connecting seat abuts against the straight cylindrical body or conical body, and the end face of the fin away from the connecting seat is adapted to the surface shape of the straight cylindrical body or conical body.
[0012] Furthermore, the heat exchanger also includes a protective block, which is welded to one end of the fin near the connecting seat and is embedded in the connecting seat.
[0013] Specifically, the water inlet pipe is arranged tangentially along the cylindrical shell, and the drain pipe is arranged tangentially along the conical shell.
[0014] Specifically, there are 2 to 4 bends evenly distributed around the circumference, and the bends are set at an angle.
[0015] Specifically, the monitoring component includes an isolation hoop and a pressure gauge. An isolation hoop is fixedly installed between the cylindrical shell and the conical shell. The weld between the straight cylinder and the conical cylinder is located inside the isolation hoop. A pressure gauge is fixedly installed on the side wall of the isolation hoop.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] By using a split jacket (cylindrical shell, conical shell) in conjunction with the heat exchange components, the cooling water can be physically isolated from the weld, effectively avoiding micro-cracks and hidden leaks in the weld caused by thermal stress cycles. It can also prevent material contamination caused by cooling water backflow, thereby improving the heat exchange efficiency, service life and reliability of safe operation of the equipment.
[0018] The monitoring components are designed to detect weld leaks in a timely manner, preventing unplanned downtime or safety accidents. Attached Figure Description
[0019] Figure 1 This is a schematic front view of the structure of this utility model;
[0020] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;
[0021] Figure 3 This is a partial sectional view of the structure of the heat exchanger of this utility model;
[0022] Figure 4 This is a partial sectional view of the structure of the monitoring component of this utility model.
[0023] In the diagram: 1. Inlet pipe, 2. Heat exchanger, 21. Connecting seat, 22. Protective block, 23. Fin, 3. Cylindrical shell, 4. Straight cylinder, 5. Monitoring component, 51. Isolation clamp, 52. Pressure gauge, 6. Drain pipe, 7. Conical cylinder, 8. Conical shell, 9. Bend. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example content:
[0026] Please see Figure 1 and Figure 2 This utility model provides a discharge collection bin, including a straight cylindrical body 4 and a conical body 7 welded together. A weld is formed at the joint between the straight cylindrical body 4 and the conical body 7. A flange ring is also welded to the top of the circumferential side of the straight cylindrical body 4, and a discharge flange is also welded to the bottom of the conical body 7. In use, the flange ring is fastened to the flange plate by bolts, and a pipeline is connected to the flange plate. The above is the prior art and will not be described in detail here.
[0027] Improvements to the cooling structure:
[0028] A cylindrical shell 3 is fixedly installed on the circumferential side of the straight cylindrical body 4, and a conical shell 8 is fixedly installed on the circumferential side of the conical cylindrical body 7. A bent pipe 9 is installed between the cylindrical shell 3 and the conical shell 8. A water inlet pipe 1 is installed at the upper end of the circumferential side of the cylindrical shell 3, and a drain pipe 6 is installed at the lower end of the circumferential side of the conical shell 8. The traditional integral jacket is modified into separate cylindrical shells 3 and conical shells 8, which are respectively wrapped around the straight cylindrical body 4 and the conical cylindrical body 7 and connected by the bent pipe 9, so that the cooling water and the weld will not come into contact.
[0029] In addition, both the cylindrical shell 3 and the conical shell 8 have through slots on their circumferential sides, and heat exchange components 2 are installed in the through slots to further improve the heat exchange efficiency of the chamber (straight cylindrical body 4 and conical body 7).
[0030] A monitoring component 5 is installed between the cylindrical shell 3 and the conical shell 8. The weld seam is monitored separately by the monitoring component 5. When a leak occurs, the pressure change will be detected in time, which will facilitate timely detection and maintenance. In addition, the leaked high-pressure gas will not enter the cooling water and interfere with the normal cooling operation, and the cooling water will not enter the chamber and contaminate the materials being collected and output.
[0031] Specifically:
[0032] The arrangement of heat exchanger 2:
[0033] The heat exchanger 2 is arranged in several layers along the vertical direction, with each layer consisting of 1 to 4 heat exchangers 2 distributed along the circumference. The number of layers and the number of elements on the circumference are optimized according to the height of the silo and the heat load. For example, the density of the number of layers and elements is increased in high heat load areas (areas where materials are more concentrated), and the density of the number of layers and elements is reduced in low heat load areas (areas where materials are more dispersed), so as to achieve a balance between heat exchange efficiency and material cost.
[0034] Please see Figure 3 The structure of heat exchanger 2:
[0035] The heat exchanger 2 includes a connecting seat 21 and fins 23 that are fixedly installed together by welding. The fins 23 are inserted into the through slot. The connecting seat 21 is connected to the cylindrical shell 3 or the conical shell 8 by bolts. The end of the fin away from the connecting seat 21 abuts against the straight cylinder 4 or the conical cylinder 7. That is, the fins 23 on the cylindrical shell 3 abut against the straight cylinder 4, and the fins 23 on the conical shell 8 abut against the conical cylinder 7. The fins 23 can be quickly installed and removed through the connecting seat 21. The fins 23 are used to conduct heat from the straight cylinder 4 and the conical cylinder 7, increase the contact area with the cooling water, and thus improve the cooling efficiency.
[0036] In addition, the end face of the fin 23 away from the connecting seat 21 is adapted to the surface shape of the straight cylinder 4 or the conical cylinder 7, so that the fin 23 has a better contact surface with the straight cylinder 4 or the conical cylinder 7, which is conducive to heat dissipation.
[0037] The heat exchanger 2 also includes a protective block 22. The protective block 22 is welded to one end of the fin 23 near the connecting seat 21. The protective block 22 is embedded in the connecting seat 21. The material of the fin 23 is preferably stainless steel, and the material of the protective block 22 is preferably magnesium alloy. The protective block 22 serves as a sacrificial anode to provide cathodic protection for the fin 23, preventing the fin 23 from being corroded and thus affecting the heat exchange efficiency.
[0038] The arrangement of water inlet pipe 1 and drain pipe 6:
[0039] The water inlet pipe 1 is arranged tangentially along the cylindrical shell 3, and the drain pipe 6 is arranged tangentially along the conical shell 8; this allows the cooling water to form a swirling flow inside the cylindrical shell 3 and the conical shell 8, which can reduce the existence of cooling dead zones and make heat exchange more uniform.
[0040] Please see Figure 1 The setting of bend 9:
[0041] Two to four bends 9 are evenly distributed around the circumference and are inclined. The input end of the bend 9 is arranged along the tangent of the cylindrical shell 3, and the output end of the bend 9 is arranged along the tangent of the conical shell 8. Multiple bends 9 are used to guide the coolant in the cylindrical shell 3 into the conical shell 8 to avoid excessive local delivery pressure. The inclined bends 9 can continue to make the coolant entering the conical shell 8 swirl.
[0042] Please see Figure 4 The structure of monitoring component 5:
[0043] The monitoring component 5 includes an isolation hoop 51 and a pressure gauge 52. The isolation hoop 51 is fixedly installed between the cylindrical shell 3 and the conical shell 8. The weld between the straight cylinder 4 and the conical cylinder 7 is located inside the isolation hoop 51. The pressure gauge 52 is fixedly installed on the side wall of the isolation hoop 51. The isolation hoop 51 is an existing component with an arc plate, a sealing ring and a bolt group. The arc plate has connecting ears at both ends. After the connecting ears at both ends are connected by the bolt group, the sealing ring can be pressed against the outer periphery of the cylindrical shell 3 and the conical shell 8 to achieve a sealed installation.
[0044] The gas pressure inside the isolation ring 51 is monitored in real time by pressure gauge 52. When a micro-crack appears in the weld, high-pressure gas inside the chamber will enter the isolation ring 51. The increase in the value of pressure gauge 52 can be used to realize early warning of leakage and prevent the accident from escalating.
[0045] The working principle of this embodiment:
[0046] Water inlet pipe 1 and water outlet pipe 6 are connected to an external cooling water circulation station. The cooling water circulation station is an existing equipment with a structure including a cooling tower, heat exchanger, water pump and clean water tank. It is used to recover heated cooling water, which is then cooled, filtered and reused.
[0047] When the discharge collection bin is in operation, cooling water enters tangentially from the inlet pipe 1 along the cylindrical shell 3, forming a swirling flow and flowing downwards. It then enters the conical shell 8 through the bend pipe 9 to continue forming a swirling flow, and finally exits tangentially from the drain pipe 6. Throughout the process, the cooling water is prevented from directly contacting the weld.
[0048] The fins 23 of the heat exchanger 2 are closely attached to the surfaces of the straight cylinder 4 and the conical cylinder 7, thereby increasing the heat exchange area and improving heat dissipation efficiency.
[0049] The isolation hoop 51 of the monitoring component 5 wraps around the weld area, and the pressure gauge 52 monitors the internal air pressure in real time, which has the function of leak early warning.
[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A discharge collecting bin comprising a straight cylinder (4) and a tapered cylinder (7) welded together, characterized in that: A cylindrical shell (3) is fixedly installed on the circumferential side of the straight cylindrical body (4), and a conical shell (8) is fixedly installed on the circumferential side of the conical cylindrical body (7). A bent pipe (9) is installed between the cylindrical shell (3) and the conical shell (8). A water inlet pipe (1) is installed at the upper end of the circumferential side of the cylindrical shell (3), and a drain pipe (6) is installed at the lower end of the circumferential side of the conical shell (8). Both the cylindrical shell (3) and the conical shell (8) have through slots on their circumferential sides, and heat exchange components (2) are installed in the through slots. A monitoring component (5) is installed between the cylindrical shell (3) and the conical shell (8).
2. A discharge collection bin according to claim 1, characterised in that: The heat exchanger (2) is arranged in several layers along the vertical direction, and each layer of the heat exchanger (2) consists of 1 to 4 heat exchangers distributed along the circumference.
3. A discharge collection bin according to claim 1, characterised in that: The heat exchanger (2) includes a connecting seat (21) and fins (23) fixedly installed together. The fins (23) are inserted into the through slot. The connecting seat (21) is connected to the cylindrical shell (3) or the conical shell (8) by bolts. The end of the fin (23) away from the connecting seat (21) abuts against the straight cylinder (4) or the conical cylinder (7), and the end face of the fin (23) away from the connecting seat (21) is adapted to the surface shape of the straight cylinder (4) or the conical cylinder (7).
4. A discharge collection bin according to claim 3, characterised in that: The heat exchanger (2) also includes a protective block (22). The protective block (22) is welded to one end of the fin (23) near the connecting seat (21). The protective block (22) is embedded in the connecting seat (21).
5. A discharge collection bin according to claim 1, characterized in that: The inlet pipe (1) is arranged tangentially along the cylindrical shell (3), and the drain pipe (6) is arranged tangentially along the conical shell (8).
6. A discharge collection bin according to claim 1, characterized in that: The bends (9) are 2 to 4 in a circumferentially evenly distributed manner, and the bends (9) are inclined.
7. A discharge collection bin according to claim 1, characterized in that: The monitoring component (5) includes an isolation hoop (51) and a pressure gauge (52). An isolation hoop (51) is fixedly installed between the cylindrical shell (3) and the conical shell (8). The weld between the straight cylinder (4) and the conical cylinder (7) is located inside the isolation hoop (51). A pressure gauge (52) is fixedly installed on the side wall of the isolation hoop (51).