A gas-energy shock wave matrix cleaning staggered tube heat exchanger

Abstract

This utility model relates to the field of soot removal technology for tube heat exchangers, specifically a gas-energy shockwave matrix soot removal type staggered tube heat exchanger. It includes a shockwave tank, a motor, a soot blowing control box, a rake rod main pipe, and a heat exchanger body. The shockwave tank features a large capacity design. The heat exchanger body is installed in the boiler tail flue to recover waste heat from the high-temperature flue gas. The soot blowing control box controls the operation of the soot blower, including charging, releasing, advancing, and retracting operations. The rake rod main pipe connects to the shockwave tank, and its other end is connected to and fixed with a rake rod nozzle to ensure stable airflow transmission. This utility model, through the above structure, uses gas-energy shockwave instead of traditional steam, and rationally adds a heat exchanger and a stepping gas-energy shockwave soot blowing mechanism, achieving a significant improvement in boiler thermal efficiency and an extension of service life. By optimizing the design and collaborative workflow of the heat exchanger and soot blower, it overcomes the shortcomings of existing technologies.

Description

Technical Field

[0001] This utility model relates to the field of tube heat exchanger cleaning technology, and in particular to a gas-energy shock wave matrix cleaning type staggered tube heat exchanger. Background Technology

[0002] The gas-energy shockwave matrix cleaning staggered tube heat exchanger is a device that integrates high-efficiency heat exchange and active cleaning functions. Its core lies in using a staggered tube arrangement structure to increase the heat exchange area and enhance fluid turbulence to improve heat transfer efficiency. At the same time, gas-energy shockwave generators are arranged in the shell or between the tubes. Through the matrix-distributed shockwave generators, high-energy pulses are released periodically. The impact force and vibration effect of the shock waves are used to remove the ash accumulated on the tube surface, solving the problem of heat transfer efficiency reduction caused by ash accumulation in traditional staggered tube heat exchangers. It achieves integrated optimization of heat exchange performance and cleaning maintenance, and is suitable for heat exchange scenarios in high dust conditions in chemical, power and other fields.

[0003] Low thermal efficiency and short equipment lifespan are common problems in industrial boiler operation. The main reasons include: heat loss (the high temperature of the flue gas discharged from the boiler carries away a large amount of heat, leading to reduced thermal efficiency); and ash accumulation (ash easily accumulates on the boiler's heating surfaces and internal equipment, affecting heat transfer efficiency, increasing energy consumption, and shortening equipment lifespan). In traditional solutions, heat exchangers are mainly used to recover waste heat from the flue gas, while soot blowers are used to remove ash. However, traditional soot blowing methods suffer from severe obstruction in staggered tube arrangements, resulting in ineffective ash removal. Current technologies do not integrate heat exchangers and soot blowers tightly enough, failing to fully utilize their synergistic effect and thus failing to effectively solve the aforementioned problems.

[0004] Therefore, this utility model provides a gas-energy shock wave matrix cleaning staggered tube heat exchanger. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where the heat exchanger and soot blower are not tightly integrated, and to propose a gas-energy shock wave matrix cleaning staggered tube heat exchanger.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a gas-powered shock wave matrix cleaning staggered tube heat exchanger, comprising a shock wave tank, a motor, a soot blowing control box, a rake rod main pipe and a heat exchanger body. The shock wave tank adopts a large capacity design, and the heat exchanger body is installed in the tail flue of the boiler for recovering waste heat from the high-temperature flue gas.

[0007] The effects achieved by the above components are as follows: The heat exchanger body adopts a high-efficiency heat exchange structure. Through optimized design and flow channel layout, it maximizes the recovery of heat in the flue gas, significantly reduces the boiler's fuel consumption, and is installed in the boiler's tail flue to recover waste heat in the high-temperature flue gas, reduce the flue gas emission temperature, and improve the overall thermal efficiency of the boiler. This device is installed on the boiler's heating surface and inside the heat exchanger body to remove ash accumulation, ensure heat transfer efficiency, and extend the service life of the equipment.

[0008] Preferably, the motor is used to drive the advance and retraction of the rake-type soot blower to achieve automated cleaning.

[0009] The effect achieved by the above components is that the motor drives the rake-type soot blower to move forward.

[0010] Preferably, the soot blowing control box is used to control the operation process of the soot blower, including inflation, release, propulsion and retraction operations.

[0011] The above components achieve the following effect: one blow advances one step, then retreats after reaching the forward limit switch; one blow retreats one step, then stops running after reaching the backward limit switch, thus completing one blowing cycle.

[0012] Preferably, the rake handle main tube is used to connect to the shock tank.

[0013] The effect achieved by the above components is that the design of the rake bar main pipe ensures stable airflow transmission.

[0014] Preferably, the other end of the rake rod main pipe is connected to and fixed with a rake rod nozzle to ensure stable airflow transmission.

[0015] The effect achieved by the above components is to remove the accumulated dust on the heated surface and inside the heat exchanger by instantaneous blowing through the nozzle.

[0016] Preferably, the other end of the rake nozzle is connected to and fixedly connected to a nozzle.

[0017] The above components achieve the following effects: the nozzles can be adjusted in angle, used vertically, and can adopt a duckbill structure or a Laval structure. The arrangement of the nozzles can be adjusted according to the arrangement of the heating surface and the tube bank inside the heat exchanger.

[0018] Preferably, the nozzle is configured with a finer tip and a coarser tip.

[0019] The effect achieved by the above components is as follows: when the pipes are arranged in a straight line, the lower part of the nozzle is positioned directly opposite the pipe gap; when the pipes are arranged in a staggered line, the nozzles are staggered according to the angle of the pipe gap, ensuring the best blowing effect.

[0020] Preferably, the surface of the rake bar main tube is fixedly connected to a support, which serves to fix the soot blower rake bar and ensure stable operation.

[0021] The aforementioned components achieve the following effect: the support is used to fix the soot blower rake rod, ensuring stable operation.

[0022] In summary:

[0023] In this invention, by setting the above-mentioned structure, a pulsed shock wave sootblower is used to replace the traditional steam sootblower. The nozzle angle is matched with the heat exchanger tube bundle arrangement, and the original continuous steam blowing is changed to intermittent shock wave blowing, making the blowing force more concentrated, more targeted, and the ash removal effect better. Since air is used instead of steam, the cost is greatly reduced, possibly only one-tenth or even one-twentieth of that of steam. At the same time, since steam is no longer used, the moisture content in the flue gas will not increase, and there is no negative impact on boiler operation. Using air instead of steam eliminates the problem of blow damage to the opposite side of the tubes, which can improve the soot blowing penetration and solve the problem of soot blowing obstruction in traditional staggered tubes. By using air-energy shock waves to replace traditional steam, and by reasonably adding a heat exchanger and a stepping air-energy shock wave soot blowing mechanism, the boiler thermal efficiency is significantly improved and the service life is extended. By optimizing the design and collaborative workflow of the heat exchanger and sootblower, the shortcomings of the prior art are solved. Attached Figure Description

[0024] Figure 1 This is a plan view of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the main rake handle in this utility model;

[0027] Figure 4 In this utility model Figure 3 A partial structural diagram.

[0028] Legend: 1. Shock tank; 2. Motor; 3. Soot blowing control box; 4. Rake bar main pipe; 5. Rake bar nozzle; 6. Support; 7. Nozzle; 8. Heat exchanger body. Detailed Implementation

[0029] Reference Figures 1-4 As shown, this utility model provides a technical solution: a gas-energy shock wave matrix cleaning staggered tube heat exchanger, including a shock wave tank 1, a motor 2, a soot blowing control box 3, a rake rod main pipe 4, and a heat exchanger body 8.

[0030] The following is a detailed explanation of its overall setup and function.

[0031] In this implementation scheme: Shock tank 1 adopts a large-capacity design, and heat exchanger body 8 is installed in the boiler tail flue to recover waste heat from high-temperature flue gas. Heat exchanger body 8 employs a highly efficient heat exchange structure, maximizing heat recovery from the flue gas through optimized design and flow channel layout, significantly reducing boiler fuel consumption. Installed in the boiler tail flue, heat exchanger body 8 recovers waste heat from high-temperature flue gas, reduces flue gas emission temperature, and improves overall boiler thermal efficiency. This device is installed on the boiler heating surface and inside heat exchanger body 8 to remove accumulated ash, ensure heat transfer efficiency, and extend equipment lifespan. Motor 2 drives the rake sootblower's forward and backward movements, achieving automated cleaning. Motor 2 drives the rake sootblower forward. Sootblowing control box 3 controls the sootblower's operation, including inflation, deflation, forward movement, and backward movement. Each pulse advances one step, retracts after reaching the forward limit switch, and stops after reaching the backward limit switch, completing one sootblowing cycle. Rake rod main pipe 4 connects to shock tank 1. The rake rod main pipe 4 ensures stable airflow transmission. The other end of the rake rod main pipe 4 is connected to and fixed with the rake rod nozzle 5, ensuring stable airflow transmission. The nozzle sprays air instantaneously to remove accumulated ash from the heated surfaces and inside the heat exchanger.

[0032] Specifically, the other end of the rake nozzle 5 is connected to and fixedly connected to a nozzle 7. The nozzle 7 can be angled, used vertically, and can employ a duckbill or Laval structure. The arrangement of the nozzle 7 is adjusted according to the arrangement of the heating surface and the tube bank inside the heat exchanger. The nozzle 7 is arranged with a thinner front and a thicker back. When the tube bank is arranged in a straight line, the lower part of the nozzle is positioned directly opposite the tube gap; when the tube bank is arranged in a staggered manner, the nozzle 7 is staggered according to the angle of the tube gap to ensure optimal blowing effect. A support 6 is fixedly connected to the surface of the rake main pipe 4. The support 6 is used to fix the sootblower rake rod and ensure stable operation. The support 6 is used to fix the sootblower rake rod and ensure stable operation.

[0033] Working principle: First, the heat exchanger body 8 is started to recover waste heat from the flue gas and reduce the flue gas emission temperature. The shock tank 1 is charged for 40 seconds (the charging time can be adjusted according to actual needs), and then released for 2 seconds. The gas is then sprayed instantaneously through the nozzles to remove accumulated ash from the heated surfaces and inside the heat exchanger. The motor 2 drives the rake-type sootblower forward, advancing one step with each spray. After reaching the forward limit switch, it retracts one step, stopping after reaching the reverse limit switch, thus completing one sootblowing cycle. The arrangement of the nozzles 7 is adjusted according to the arrangement of the heated surfaces and the tubes inside the heat exchanger. When the tubes are arranged in a straight line, the lower part of the nozzle is positioned directly opposite the tube gaps. When the tubes are arranged in a staggered line, the nozzles 7 are positioned according to the gaps between the tubes. The staggered angular arrangement ensures optimal blowing effect. By implementing this structure and adding a heat exchanger, waste heat from the flue gas is recovered, reducing the flue gas emission temperature. Simultaneously, a stepping air-energy shockwave soot blowing mechanism removes accumulated ash, ensuring efficient heat transfer and reducing corrosion and wear caused by ash, significantly extending the service life of the boiler and heat exchanger. Equipped with a soot blowing control box 3, it achieves automated operation of the soot blower, improving equipment operating efficiency and reliability. The nozzle arrangement 7 can be flexibly adjusted according to the internal structure of the equipment, suitable for various industrial boiler and heat exchanger scenarios. Through the reasonable addition of a heat exchanger and a stepping air-energy shockwave soot blowing mechanism, a significant improvement in boiler thermal efficiency and an extension of service life are achieved. This system has a reasonable structure, stable performance, broad application prospects, and significant economic benefits.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A gas-energy shockwave matrix cleaning staggered tube heat exchanger, characterized in that: It includes a shock tank (1), a motor (2), a soot blowing control box (3), a rake bar main pipe (4), and a heat exchanger body (8), which is installed in the tail flue of the boiler and is used to recover waste heat from the high-temperature flue gas.

2. The gas-energy shock wave matrix cleaning staggered tube heat exchanger according to claim 1, characterized in that: The motor (2) is used to drive the advance and retraction of the rake-type soot blower to achieve automated cleaning.

3. The gas-energy shock wave matrix cleaning staggered tube heat exchanger according to claim 1, characterized in that: The soot blowing control box (3) is used to control the operation of the soot blower, including inflation, release, propulsion and retraction operations.

4. The gas-energy shock wave matrix cleaning staggered tube heat exchanger according to claim 1, characterized in that: The rake handle (4) is used to connect the shock tank (1).

5. A gas-energy shock wave matrix cleaning staggered tube heat exchanger according to claim 1, characterized in that: The other end of the rake rod main pipe (4) is connected to and fixed with the rake rod nozzle (5) to ensure stable airflow transmission.

6. A gas-energy shockwave matrix cleaning staggered tube heat exchanger according to claim 5, characterized in that: The other end of the rake nozzle (5) is connected to and fixedly connected to a nozzle (7).

7. A gas-energy shockwave matrix cleaning staggered tube heat exchanger according to claim 6, characterized in that: The nozzle (7) is designed with a finer tip and a coarser tip.

8. A gas-energy shockwave matrix cleaning staggered tube heat exchanger according to claim 1, characterized in that: The surface of the rake rod main tube (4) is fixedly connected to a support (6), which serves to fix the soot blower rake rod and ensure stable operation.

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