Covered furnace cooling pipeline descaling device based on efficient descaling agent

Abstract

The utility model discloses a cover type furnace cooling pipeline scale removing device based on high -efficient scale remover, including movable frame body, set up control box, cleaning agent bucket and circulating pump on movable frame body, and the import of circulating pump is communicated with cleaning agent bucket through pipeline, and the outlet of circulating pump has the pulse -corrosion circulation unit in series on main pipeline, and still has the safe redundancy protection valve block in parallel on main pipeline, and the pulse -corrosion circulation unit includes the high -frequency on -off solenoid valve in series on main pipeline, and the accumulator in parallel on the high -frequency on -off solenoid valve import side main pipeline through the tee head, and the electric control end of high -frequency on -off solenoid valve is connected with control box, the utility model discloses have realized high -efficient, intelligent, safe cleaning function in high pressure closed system, alleviateed the problem that the traditional cleaning device exists in cover type furnace cooling pipeline scale removing operation and is difficult to give priority to with the cleaning efficiency low and system safety, has improved scale removing efficiency, lengthened equipment life under the premise of guaranteeing absolute safety.

Description

Technical Field

[0001] This utility model relates to the field of pipeline descaling technology, and in particular to a descaling device for bell-type furnace cooling pipelines based on a high-efficiency descaling agent. Background Technology

[0002] As an important heat treatment equipment, the cooling system of a bell-type furnace is usually a closed-loop circulation system that operates continuously. During operation, the cooling water easily forms hard scale on the inner wall of the pipes. The accumulation of scale can significantly reduce heat exchange efficiency, increase energy consumption, and even lead to uneven temperature inside the furnace, affecting product quality. In severe cases, it may block the pipes and cause equipment shutdown. Therefore, regular descaling maintenance of the bell-type furnace cooling pipes is crucial.

[0003] For example, patent number CN221319625U discloses a mobile cooling circulating water pipeline cleaning and descaling device, including a moving mechanism, a base, a filter mechanism mounted on the upper surface of the base, a filter box, an inlet pipe fixedly connected to the left side surface of the filter box, a filter screen fixedly connected to the bottom inside the filter box, a ramp fixedly connected to the bottom inside the filter box, a discharge pipe fixedly connected to the right side surface of the filter box, and a first outlet pipe fixedly connected to the top of the filter box, with the end of the first outlet pipe extending into the interior of the filter screen. This invention utilizes the impact of water flow on the filter screen surface to shake off the scale adhering to the filter screen, which then slides to the bottom of the ramp and is finally discharged from the outlet pipe. This eliminates the need to remove, replace, or clean the filter screen, thus improving work efficiency.

[0004] For example, patent number CN218133820U discloses a high-efficiency descaling pipe cleaning device, belonging to the field of cleaning equipment technology. It includes a water pump truck and a nozzle. The water pump truck and the nozzle are fixedly connected via a water pipe. The nozzle includes a fixed pipe and a rotating head. The fixed pipe is rotatably connected to the rotating head. The rotating head has five rotating spray holes and one reverse spray hole. The fixed pipe has a through hole communicating with the rotating head. The rotating head also has four cleaners, which are rotatably connected to the rotating head. This invention uses spray holes on the nozzle that can spray water at different angles, allowing the water flow to flush and remove dirt from the inner wall of the pipe from different angles. The rotating head rotates under the drive of the water flow, enabling the cleaners to scrape against the inner wall of the pipe, thereby improving the cleaning effect.

[0005] Regarding the above description, the applicant believes that the following problems exist: Although the existing cleaning devices are sufficient to handle most cleaning scenarios, they have obvious limitations when dealing with pressurized and sealed bell-type furnace cooling systems. The continuous and stable circulation mode adopted by these devices has limited efficiency in removing hard scale layers in the system. Furthermore, if the pumping pressure is blindly increased in order to improve the cleaning effect, it may cause an abnormal increase in the internal pressure of the sealed system, or even pose a safety hazard of overpressure explosion. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent. It has the function of achieving efficient, intelligent and safe cleaning in a high-pressure closed system, which alleviates the problem of low cleaning efficiency and difficulty in ensuring system safety in traditional cleaning devices for bell-type furnace cooling pipe descaling operations. It significantly improves descaling efficiency and extends equipment life under the premise of ensuring absolute safety.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] The descaling device for the cooling pipes of a bell-type furnace based on a high-efficiency descaling agent includes a movable frame, a control box mounted on the movable frame, a cleaning agent tank, and a circulating pump. The inlet of the circulating pump is connected to the cleaning agent tank via a pipe. A pulse-corrosion-inhibiting circulation unit is connected in series on the main outlet pipe of the circulating pump. A safety redundancy protection valve block is also connected in parallel on the main pipe. The pulse-corrosion-inhibiting circulation unit includes a high-frequency on / off solenoid valve connected in series on the main pipe, and an accumulator connected in parallel on the main pipe at the inlet side of the high-frequency on / off solenoid valve via a three-way connector. The electrical control terminal of the high-frequency on / off solenoid valve is connected to the control box. The safety redundancy protection valve block includes a valve block body. The valve block body has a horizontal fluid channel connected in parallel with the main pipe. The valve block body has a sensor mounting hole and a pressure relief port connected to the horizontal fluid channel. Pressure sensor one and pressure sensor two are installed in the sensor mounting hole. A mechanical safety diaphragm is sealed on the pressure relief port. A guide pressure relief pipe is connected to the outside of the pressure relief port.

[0009] In one optional embodiment, the sensor mounting hole is a vertical hole that intersects with the horizontal fluid channel to form a common sensing cavity. Pressure sensor one and pressure sensor two are mounted side by side in the sensor mounting hole, and their probe ends both extend into the common sensing cavity.

[0010] In one alternative embodiment, the mechanical safety diaphragm is pressed and fixed to the end face of the pressure relief port by a pressure ring and fastening bolts.

[0011] In one alternative embodiment, an observation window is installed on the guide relief pipe, with the observation window facing the mechanical safety diaphragm.

[0012] In one alternative embodiment, the guide relief tube is made of a transparent pressure-resistant material, and its entirety forms an observation window.

[0013] In one alternative implementation, the circulating pump is a magnetically driven centrifugal pump.

[0014] In one alternative implementation, the accumulator is a piston-type accumulator.

[0015] In one optional implementation, the control box centrally houses the programmable controller, the frequency converter of the circulating pump, and the power switch. The control cable of the high-frequency on / off solenoid valve, and the signal lines of pressure sensor one and pressure sensor two are all connected to the control box and respectively connected to the corresponding ports of the programmable controller.

[0016] In one optional embodiment, the programmable controller is configured to receive feedback signals from pressure sensor one and pressure sensor two, and accordingly output periodic switching control signals to a high-frequency on / off solenoid valve to generate a pulse-corrosion-inhibition alternating cycle in the pipeline. In another optional embodiment, a sensor for monitoring the descaling agent concentration is also provided inside the cleaning agent tank, and the sensor is signal-connected to the programmable controller in the control box.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. By using a pulse-corrosion-inhibiting circulation unit structure composed of a high-frequency on / off solenoid valve and an accumulator, a synergistic cleaning effect of intelligent alternation between physical pulse stripping and chemical corrosion-inhibiting immersion is achieved. This alleviates the problems of low efficiency in removing hard scale layers and the risk of system overpressure caused by blindly increasing pump pressure in the traditional continuous and stable cleaning mode. It significantly improves cleaning efficiency while ensuring low average system pressure.

[0019] 2. By integrating a dual-path pressure sensor and a mechanical safety diaphragm into a safety redundancy protection valve block structure, a dual and redundant safety protection effect of electronic monitoring and early warning and physical ultimate pressure relief is achieved. This alleviates the technical problems of existing technologies lacking dedicated protection against pressure accumulation in closed systems and insufficient safety and reliability, and provides high-level overpressure protection for high-pressure closed systems, eliminating the risk of explosion.

[0020] 3. By highly integrating the pulse unit, safety valve block, and control cabinet into the modular structure of the mobile frame, the device is miniaturized, mobile, and all electrical control circuits are centrally managed. This alleviates the technical problems of traditional devices, such as loose structure, inconvenient movement, and complex and unreliable on-site wiring. It improves the portability, ease of operation, and overall system reliability of the equipment. Attached Figure Description

[0021] Figure 1 Schematic diagram of a descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent Figure 1 ;

[0022] Figure 2 Schematic diagram of a descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent Figure 2 ;

[0023] Figure 3 Schematic diagram of a descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent Figure 3 ;

[0024] Figure 4 Schematic diagram of a descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent Figure 4 ;

[0025] Figure 5 Schematic diagram of a descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent Figure 5 .

[0026] In the diagram: 1. Mobile frame; 2. Control box; 3. Cleaning agent tank; 4. Circulation pump; 5. Pulse-corrosion inhibition circulation unit; 6. Safety redundancy protection valve block; 7. T-joint; 8. High-frequency on / off solenoid valve; 9. Accumulator; 10. Valve block body; 11. Horizontal fluid channel; 12. Sensor mounting hole; 13. Pressure sensor one; 14. Pressure sensor two; 15. Pressure relief port; 16. Mechanical safety diaphragm; 17. Pressure ring; 18. Fastening bolt; 19. Guide pressure relief pipe; 20. Observation window. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] Please refer to Figure 1-5A descaling device for a bell-type furnace cooling pipe based on a high-efficiency descaling agent includes a movable frame 1, a control box 2 mounted on the movable frame 1, a cleaning agent tank 3, and a circulating pump 4. The inlet of the circulating pump 4 is connected to the cleaning agent tank 3 via a pipe. A pulse-corrosion inhibition circulation unit 5 is connected in series on the main outlet pipe of the circulating pump 4. A safety redundancy protection valve block 6 is also connected in parallel on the main pipe. The pulse-corrosion inhibition circulation unit 5 includes a high-frequency on / off solenoid valve 8 connected in series on the main pipe, and a valve that is connected in parallel on the main pipe on the inlet side of the high-frequency on / off solenoid valve 8 via a three-way connector 7. The accumulator 9 and the high-frequency on / off solenoid valve 8 are connected to the control box 2. The safety redundancy protection valve block 6 includes a valve block body 10. The valve block body 10 has a horizontal fluid channel 11 connected in parallel with the main pipeline. The valve block body 10 has a sensor mounting hole 12 and a pressure relief port 15 connected to the horizontal fluid channel 11. A pressure sensor 13 and a pressure sensor 2 14 are installed in the sensor mounting hole 12. A mechanical safety diaphragm 16 is sealed on the pressure relief port 15. A guide pressure relief pipe 19 is connected to the outside of the pressure relief port 15.

[0029] In a preferred embodiment of this invention, the sensor mounting hole 12 is a vertical hole that intersects with the horizontal fluid channel 11 to form a common sensing cavity. Pressure sensor 13 and pressure sensor 2 14 are installed side by side in the sensor mounting hole 12, and their detection ends extend into the common sensing cavity. Pressure sensor 13 and pressure sensor 2 14 are installed in a redundant parallel configuration. This design constitutes a redundant backup system for pressure monitoring. When any one of the sensors or its signal line fails, the other sensor can still provide a correct pressure signal, ensuring that the control system will not lose its pressure monitoring capability due to a single point of failure. This greatly improves the safety and reliability of the entire device. At the same time, the system can perform self-diagnosis by comparing the readings of the two sensors, further enhancing the reliability of the monitoring results.

[0030] In a preferred embodiment of this utility model, the mechanical safety diaphragm 16 is pressed and fixed to the end face of the pressure relief port 15 by the pressure ring 17 and the fastening bolt 18. The combination of the pressure ring 17 and the fastening bolt 18 provides a uniform and huge mechanical clamping force, ensuring that a metal-to-metal hard seal is formed between the edge of the mechanical safety diaphragm 16 and the end face of the pressure relief port 15, while also ensuring that the diaphragm can burst accurately according to a predetermined pattern when overpressure occurs.

[0031] In a preferred embodiment of this utility model, the observation window 20 can be implemented in the following ways: First, an independent observation window 20 can be installed on the pipe wall of the guide pressure relief pipe 19; Second, the guide pressure relief pipe 19 itself can be integrally formed from a transparent pressure-resistant material (such as high-strength polycarbonate), in which case the entire pipe section constitutes the observation window 20.

[0032] In a preferred embodiment of this utility model, the circulating pump 4 is a magnetically driven centrifugal pump. The magnetic pump adopts the static sealing principle, which completely eliminates the risk of leakage at the pump shaft, which is crucial for handling cleaning agents that may be chemically corrosive.

[0033] In a preferred embodiment of this utility model, the accumulator 9 is a piston-type accumulator. The piston-type accumulator uses a floating piston to completely isolate the gas from the liquid, which is reliable, has a long service life, and is not easily damaged. Moreover, the reciprocating motion of the piston responds very smoothly to pressure changes, and can be well matched with the high-frequency on / off solenoid valve 8 to generate a stable and controllable pulse waveform.

[0034] In a preferred embodiment of this utility model, the control box 2 centrally houses the programmable controller, the frequency converter of the circulating pump 4, and the power switch. The control cable of the high-frequency on / off solenoid valve 8, and the signal lines of pressure sensor 13 and pressure sensor 14 are all connected to the control box 2 and respectively connected to the corresponding ports of the programmable controller. The centralized installation of all electrical control units and the centralized management of all cables improve the reliability and aesthetics of the equipment, reduce on-site wiring errors and the probability of failure, and facilitate daily maintenance and fault diagnosis.

[0035] In a preferred embodiment of this invention, the programmable controller is configured to receive feedback signals from pressure sensor 13 and pressure sensor 14, and accordingly output periodic switching control signals to the high-frequency on / off solenoid valve 8 to generate a pulse-corrosion alternating cycle in the pipeline. Through software programming, the frequency, duty cycle, and alternation period of the pulses can be flexibly and precisely set, thus enabling "tailor-made" cleaning for pipelines of different materials and scale thicknesses. In another preferred embodiment, a concentration sensor, such as a pH meter or conductivity sensor, can be installed inside the cleaning agent tank 3 to monitor the concentration of the descaling agent in the cleaning solution in real time. The signal output of this concentration sensor is connected to the programmable controller in the control box 2. The programmable controller is configured to determine whether the descaling agent concentration is maintained within a preset effective range based on the feedback signal from the concentration sensor; when the concentration is lower than the set lower limit, the controller can issue an alarm signal, thereby ensuring the continuous, efficient, and stable cleaning process.

[0036] When using this device, first move it to the side of the bell-type furnace, prepare the high-efficiency descaling solution in the cleaning agent tank 3 according to the ratio, and then connect the device to the bell-type furnace cooling system in a closed loop through the pipeline to form a circulation loop. Start the device, and the circulation pump 4 pumps the descaling solution out of the cleaning agent tank 3. When it flows through the pulse unit, it is affected by the periodic opening and closing of the high-frequency on / off solenoid valve 8 and the accumulator 9, forming an intelligent cleaning wave that alternates between "pulse flushing" and "inhibitory soaking" in the pipeline, which effectively removes the scale layer. At the same time, the dual-path pressure sensor on the safety valve block monitors the system pressure in real time. The data is transmitted to the programmable controller in the control box for centralized processing and redundancy comparison to ensure that the pressure is normal. Once an abnormal overpressure occurs, the controller can immediately alarm and stop the machine. If the electronic system fails and the pressure rises to the limit value, the mechanical safety diaphragm 16 will burst to release pressure and provide ultimate protection. The operator can check the diaphragm status at any time through the observation window 20. After cleaning, the system is stopped, the connection is disconnected, and the waste liquid is discharged, completing the entire cleaning operation.

[0037] Although only certain components and embodiments of this application have been illustrated and described, many modifications and alterations (e.g., variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.) will be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0038] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A descaling device for a bell-type furnace cooling pipeline based on a high-efficiency descaling agent, comprising a movable frame (1), a control box (2) mounted on the movable frame (1), a cleaning agent tank (3), and a circulating pump (4), wherein the inlet of the circulating pump (4) is connected to the cleaning agent tank (3) via a pipeline, characterized in that: A pulse-corrosion-inhibiting circulation unit (5) is connected in series on the outlet main pipe of the circulating pump (4). A safety redundancy protection valve block (6) is also connected in parallel on the main pipe. The pulse-corrosion-inhibiting circulation unit (5) includes a high-frequency on / off solenoid valve (8) connected in series on the main pipe, and an accumulator (9) connected in parallel on the inlet side of the high-frequency on / off solenoid valve (8) via a three-way connector (7). The electrical control terminal of the high-frequency on / off solenoid valve (8) is connected to the control box (2). The safety redundancy protection valve block (6) includes a valve block body ( 10) The valve block body (10) is provided with a horizontal fluid channel (11) connected in parallel with the main pipeline. The valve block body (10) is provided with a sensor mounting hole (12) and a pressure relief port (15) connected to the horizontal fluid channel (11). Pressure sensor one (13) and pressure sensor two (14) are installed in the sensor mounting hole (12). A mechanical safety diaphragm (16) is sealed on the pressure relief port (15). A guide pressure relief pipe (19) is connected to the outside of the pressure relief port (15).

2. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 1, characterized in that: The sensor mounting hole (12) is a vertical hole, which intersects with the horizontal fluid channel (11) to form a common sensing cavity. Pressure sensor one (13) and pressure sensor two (14) are installed side by side in the sensor mounting hole (12), and their probe ends extend into the common sensing cavity.

3. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 1, characterized in that: The mechanical safety diaphragm (16) is pressed and fixed to the end face of the pressure relief port (15) by a pressure ring (17) and a fastening bolt (18).

4. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 1, characterized in that: An observation window (20) is installed on the guide relief pipe (19), and the observation window (20) is directly facing the mechanical safety diaphragm (16).

5. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 4, characterized in that: The guide relief pipe (19) is made of transparent pressure-resistant material and its whole structure forms an observation window (20).

6. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 1, characterized in that: The circulating pump (4) is a magnetically driven centrifugal pump.

7. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 1, characterized in that: The accumulator (9) is a piston accumulator.

8. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 1, characterized in that: The control box (2) houses the programmable controller, the frequency converter of the circulating pump (4), and the power switch. The control cable of the high-frequency on / off solenoid valve (8), the signal lines of pressure sensor one (13) and pressure sensor two (14) are all connected to the control box (2) and connected to the corresponding ports of the programmable controller.

9. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 8, characterized in that: The programmable controller is configured to receive feedback signals from pressure sensor 1 (13) and pressure sensor 2 (14) and output periodic switching control signals to the high-frequency on / off solenoid valve (8) to generate a pulse-corrosion alternating cyclic pattern in the pipeline.

10. The descaling device for bell-type furnace cooling pipes based on a high-efficiency descaling agent according to claim 8, characterized in that: The cleaning agent tank (3) is also equipped with a sensor for monitoring the concentration of the descaling agent. The sensor is connected to the programmable controller in the control box (2).

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