Manual two-way cooling system for bearing of combustion fan of hot blast stove

Abstract

A manual double-path cooling system for a hot blast stove combustion fan bearing comprises a bearing cooling cavity, a main cooling path, a standby cooling path and a temperature monitoring assembly. Each of the main cooling path and the standby cooling path is provided with an independent water source, a water inlet and outlet pipeline and a manual valve, the two paths of cooling are mutually independent, and the main path and the standby path are switched by manually operating the valves; the temperature monitoring assembly monitors the temperature of the bearing in real time and can give an alarm when the temperature is over-high. The system is simple in structure, low in cost and high in reliability, does not need to depend on automatic control, can be rapidly and manually switched to the standby cooling path when the main cooling path fails, effectively avoids equipment shutdown caused by bearing cooling failure, guarantees production continuity and safety, and is particularly suitable for industrial scenes without automatic control or needing emergency cooling.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for hot blast stove combustion blowers, and in particular to a manual dual-path cooling system for the bearings of hot blast stove combustion blowers. Background Technology

[0002] Combustion blowers are key equipment in hot blast stove production, and their bearings continuously generate heat during high-speed operation. If this heat cannot be dissipated in time, the bearing temperature will rise, which can lead to accelerated bearing wear and shortened service life, or even bearing deformation and seizure, blower shutdown, and even production safety accidents.

[0003] Existing combustion fan bearing cooling systems are single-circuit cooling designs, relying on only one cooling water source (such as circulating water) and piping to cool the bearings. When this single-circuit system malfunctions (such as blocked cooling water pipes, damaged valves, insufficient water pressure, etc.), the cooling function immediately fails, requiring emergency shutdown for repairs, which severely impacts production continuity. Some dual-circuit cooling systems rely on automatic control modules for switching, which is not only costly but also unable to achieve effective cooling during power outages or control system failures, limiting their applicability. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a manual dual-path cooling system for the bearings of a hot blast stove combustion fan.

[0005] The technical solution adopted by this invention to solve its technical problem is: a manual dual-path cooling system for the bearing of a hot blast stove combustion fan, comprising:

[0006] The bearing cooling chamber is arranged around the outside of the bearing in the combustion blower body to contain the cooling medium and exchange heat with the bearing.

[0007] The main cooling circuit includes a main cooling water source, a main inlet pipe, a main inlet manual valve, a main outlet pipe, and a main outlet manual valve. One end of the main inlet pipe is connected to the main cooling water source, and the other end is connected to the inlet of the bearing cooling chamber. The main inlet manual valve is connected in series with the main inlet pipe. One end of the main outlet pipe is connected to the outlet of the bearing cooling chamber, and the other end is connected to the external drainage / return water circulation system. The main outlet manual valve is connected in series with the main outlet pipe.

[0008] The backup cooling circuit includes a backup cooling water source, a backup inlet pipe, a backup inlet manual valve, a backup outlet pipe, and a backup outlet manual valve; one end of the backup inlet pipe is connected to the backup cooling water source, and the other end is connected to the inlet of the bearing cooling chamber, with the backup inlet manual valve connected in series on the backup inlet pipe; one end of the backup outlet pipe is connected to the outlet of the bearing cooling chamber, and the other end is connected to the external drainage / return water circulation system, with the backup outlet manual valve connected in series on the backup outlet pipe;

[0009] A temperature monitoring assembly includes a temperature sensor and a temperature display. The temperature sensor is installed on the inner wall of the bearing cooling chamber or on the outer side of the bearing, and the temperature display is electrically connected to the temperature sensor.

[0010] As a further improvement of the present invention: the main cooling water source is an industrial circulating cooling water system.

[0011] As a further improvement of the present invention: the backup cooling water source is an independently set emergency industrial open-circuit cooling system.

[0012] As a further improvement of the present invention: the main water inlet pipe, the backup water inlet pipe, the main water outlet pipe and the backup water outlet pipe are made of galvanized pipe material.

[0013] As a further improvement of the present invention: the main inlet manual valve, the main outlet manual valve, the standby inlet manual valve, and the standby outlet manual valve are manual ball valves.

[0014] As a further improvement of the present invention, the temperature monitoring component also includes a temperature alarm unit, which issues an alarm signal when the bearing temperature detected by the temperature sensor exceeds a preset threshold.

[0015] As a further improvement of the present invention: the inner wall of the bearing cooling cavity is made of copper alloy.

[0016] As a further improvement of the present invention: the preset alarm temperature is 65°C and the preset trip temperature is 80°C.

[0017] As a further improvement of the present invention: the temperature sensor is a PT100 platinum resistance temperature sensor.

[0018] Compared with existing technologies, the advantages of this invention are: it adopts a dual-path independent cooling design with main and backup water sources that are independent of each other. When the main cooling path fails, the backup cooling path can be manually switched on, effectively avoiding fan shutdown due to cooling failure and ensuring production continuity. It has a simple structure and low cost, requiring no complex automated control modules; path switching is achieved only through manual valves. The equipment is low-cost and easy to maintain, making it suitable for small and medium-sized enterprises or scenarios without automated control requirements. Equipped with temperature monitoring components and an alarm unit, it can monitor bearing temperature in real time, promptly detect cooling system anomalies, facilitate rapid operator response, and reduce the risk of equipment damage and safety accidents. Attached Figure Description

[0019] To more clearly illustrate the technical solution, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure label:

[0022] 1. Main inlet valve; 2. Main outlet valve; 3. Backup inlet valve; 4. Backup outlet valve; 5. Inlet bypass; 6. Outlet bypass; 7. Temperature thermocouple; 8. Bearing cooling chamber; 11. Upper seat; 12. Lower seat; 13. Industrial open-circuit cooling water system; 15. Industrial circulating cooling water system; 16. Drainage ditch. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] Combustion fans in hot blast stoves are critical equipment in high-temperature industrial production. Their bearings continuously generate significant heat during high-speed, continuous operation. If this heat cannot be dissipated promptly and effectively, the bearing temperature will rise abnormally, leading to a series of equipment malfunctions and production risks, including: accelerated bearing wear and shortened equipment lifespan; bearing deformation and seizure, causing forced fan shutdown; and in severe cases, equipment damage or even production safety accidents. Therefore, bearing cooling systems are crucial auxiliary equipment for ensuring stable operation of combustion fans and maintaining production continuity. Currently, common bearing cooling solutions suffer from the following technical bottlenecks: reliance on a single cooling water source and piping; immediate cooling failure due to pipe blockage, valve malfunction, or insufficient water pressure; and the need for emergency shutdowns for repairs, severely impacting production continuity and efficiency. While some dual-path cooling systems offer primary / backup switching capabilities, they rely on automated control modules; in the event of power outages, control system failures, or signal anomalies, effective switching is impossible, rendering the backup system ineffective; automated systems are complex, costly, and difficult to maintain, making them unsuitable for small and medium-sized enterprises or scenarios without automation requirements.

[0026] This invention overcomes the problems of low reliability, high cost, and limited applicability of existing combustion fan bearing cooling systems, and provides a manual dual-path cooling system for combustion fan bearings. The system allows for manual switching between the main and backup cooling paths, has a simple structure, low cost, and high reliability, and can be adapted to various scenarios without automated control or requiring emergency cooling.

[0027] like Figure 1 As shown, a manual dual-path cooling system for the bearing of a combustion fan in a hot blast stove is characterized by comprising:

[0028] The bearing cooling chamber 14 is arranged around the outside of the bearing of the combustion blower body to contain the cooling medium and exchange heat with the bearing; the inner wall of the chamber is made of copper alloy with good thermal conductivity to enhance the heat exchange efficiency with the bearing.

[0029] The main cooling circuit includes a main cooling water source, a main inlet pipe, a main inlet valve 1, a main outlet pipe, and a main outlet valve 2. One end of the main inlet pipe is connected to the main cooling water source, and the other end is connected to the inlet of the bearing cooling chamber 8. A main inlet manual valve is connected in series on the main inlet pipe. One end of the main outlet pipe is connected to the outlet of the bearing cooling chamber, and the other end is connected to the external drainage / return water circulation system. A main outlet manual valve is connected in series on the main outlet pipe. In the main cooling circuit, the main cooling water source is the factory's existing industrial circulating cooling water system. Both the main inlet pipe and the main outlet pipe are DN15 galvanized pipes. The main inlet valve 1 and the main outlet valve 2 are both DN15Q11F-16P ball valves, which are respectively installed at the end of the main inlet pipe closest to the main industrial circulating cooling water source and the main outlet pipe returns to the industrial circulating cooling water system for circulating cooling.

[0030] The backup cooling circuit includes a backup cooling water source, a backup inlet pipe, a backup inlet manual valve, a backup outlet pipe, and a backup outlet manual valve. One end of the backup inlet pipe is connected to the backup cooling water source, and the other end is connected to the inlet of the bearing cooling chamber. The backup inlet manual valve is connected in series with the backup inlet pipe. One end of the backup outlet pipe is connected to the outlet of the bearing cooling chamber, and the other end is connected to the external drainage / return water circulation system. The backup outlet manual valve is connected in series with the backup outlet pipe. In the backup cooling circuit, the backup cooling water source is an industrial open-circuit cooling water system, and the backup inlet pipe and backup outlet pipe are both DN15 galvanized pipes. The backup inlet valve 3 and backup outlet valve 4 are the same model as the valves in the main cooling circuit. They are respectively installed at the end of the backup inlet pipe closest to the emergency industrial open-circuit cooling water source, and the backup outlet pipe directly discharges into the drainage well.

[0031] The temperature monitoring assembly includes a temperature sensor and a temperature display. The temperature sensor is installed on the inner wall of the bearing cooling cavity or on the outer side of the bearing, and the temperature display is electrically connected to the temperature sensor. In the temperature monitoring assembly, the temperature thermocouple 7 is a PT100 platinum resistance temperature sensor, embedded in the inner wall of the bearing cooling cavity 8 and in contact with the outer wall of the bearing; the temperature display is a digital display instrument installed on the fan control panel; the temperature alarm unit is an audible and visual alarm, linked to the temperature display, with a preset alarm temperature of 65℃ and a preset trip temperature of 80℃.

[0032] As an embodiment of the present invention, in the existing industrial circulating cooling water system, the main inlet pipe and the main outlet pipe are both DN15 galvanized pipes; the main inlet manual valve and the main outlet manual valve are both DN15 Q11F-16P ball valves, which are respectively installed at the end of the main inlet pipe near the main industrial circulating cooling water source, and the main outlet pipe returns to the industrial circulating cooling water system for circulating cooling.

[0033] In the backup cooling circuit, the backup cooling water source is an industrial open-circuit cooling water system. The backup inlet pipe and the backup outlet pipe are both DN15 galvanized pipes. The backup inlet manual valve and the backup outlet manual valve are of the same model as the valves in the main cooling circuit. They are installed at the end of the backup inlet pipe that is close to the emergency industrial open-circuit cooling water source, and the backup outlet pipe is directly discharged into the drainage well.

[0034] The temperature monitoring component includes a temperature sensor and a temperature display. The temperature sensor is installed on the inner wall of the bearing cooling chamber or on the outer side of the bearing to detect the bearing temperature in real time. The temperature display is electrically connected to the temperature sensor to visually display the detected temperature data. The temperature sensor is a PT100 platinum resistance temperature sensor, embedded in the inner wall of the bearing cooling chamber and in close contact with the outer wall of the bearing. The temperature display is a digital display instrument, installed on the fan control panel. The temperature alarm unit is an audible and visual alarm, linked to the temperature display, with a preset alarm temperature of 65℃ and a preset trip temperature of 80℃.

[0035] Furthermore, the main cooling water source is the industrial circulating cooling water system 15, and the backup cooling water source is the independently set emergency industrial water open-loop cooling system 13, ensuring that the main and backup water sources are independent of each other and avoiding the failure of the backup water source due to the failure of the main water source.

[0036] Furthermore, the main water inlet pipe, the backup water inlet pipe, the main water outlet pipe, and the backup water outlet pipe are all made of galvanized pipe, which has the characteristics of corrosion resistance and high temperature resistance, thus extending the service life of the pipeline.

[0037] Furthermore, the main inlet manual valve, the main outlet manual valve, the standby inlet manual valve, and the standby outlet manual valve are all manual ball valves, which have the characteristics of reliable opening and closing and convenient flow adjustment, making it easy for operators to accurately control the flow of cooling medium.

[0038] Furthermore, the temperature monitoring component also includes a temperature alarm unit. When the bearing temperature detected by the temperature sensor exceeds a preset value (such as 70°C), the temperature alarm unit will issue an audible and visual alarm to remind the operator to check the status of the cooling system in a timely manner.

[0039] The implementation process is as follows:

[0040] During normal operation, close the backup inlet valve 3 and backup outlet valve 4, and open the main inlet valve 1 and main outlet valve 2. The industrial circulating cooling water flows into the bearing cooling chamber 8 through the main inlet pipe, absorbs the heat of the bearing, and is discharged from the main outlet pipe. The temperature display shows the bearing temperature in real time (normal range is 40-60℃).

[0041] When the main water inlet pipe becomes blocked, causing the bearing temperature to rise to 65°C, the temperature display shows an abnormally high value. The operator immediately closes the main water inlet valve 1 and the main water outlet valve 2, and then opens the backup water inlet valve 3 and the backup water outlet valve 4. The industrial open-circuit cooling water flows through the bearing cooling chamber 8 to continuously cool the bearing. After 5 minutes, the temperature display shows that the temperature has dropped below 56°C, and the equipment returns to normal operation. At the same time, personnel are arranged to repair the main cooling circuit.

[0042] This implementation features a manual dual-circuit design, which allows for rapid switching to the backup cooling circuit in case of a main cooling circuit failure. This effectively ensures the stable operation of the combustion fan. Furthermore, its simple structure and convenient operation make it suitable for practical applications in industrial production.

[0043] The main functions of this invention are:

[0044] The system provides two completely independent cooling channels: a main cooling circuit and a backup cooling circuit. If the main cooling circuit fails due to blockage, valve malfunction, or abnormal water supply, the backup cooling circuit can be immediately activated to ensure continuous bearing cooling and prevent fan shutdown due to a single circuit failure. Manual valves control the flow and on / off of the cooling medium, eliminating reliance on electricity or automated control systems. Operation is simple and intuitive, and reliable switching is possible under extreme conditions such as power outages or control system failures, enhancing system adaptability and emergency response capabilities. Integrated temperature sensors and displays monitor bearing temperature changes in real time and are equipped with audible and visual alarms to promptly alert operators when the temperature exceeds a preset safety threshold, enabling proactive monitoring and early warning of the cooling system status. The system requires no complex automatic control modules or electrical components, relying primarily on piping, manual valves, and temperature monitoring instruments. Its simple structure, low manufacturing cost, and convenient maintenance make it particularly suitable for small and medium-sized enterprises or industrial scenarios without automated control requirements. Through dual-circuit cooling and real-time temperature monitoring, the system effectively reduces the risk of equipment damage, production interruptions, and safety accidents caused by bearing overheating, improving the overall safety and reliability of the hot blast stove's combustion fan.

[0045] In summary, after reading this invention document, those skilled in the art can make various other corresponding modifications to the technical solutions and concepts based on this invention without creative mental effort, and all of these modifications fall within the scope of protection of this invention.

Claims

1. A manual dual-path cooling system for the bearings of a combustion fan in a hot blast stove, characterized in that, include: The bearing cooling chamber is arranged around the outside of the bearing in the combustion blower body to contain the cooling medium and exchange heat with the bearing. The main cooling circuit includes a main cooling water source, a main inlet pipe, a main inlet manual valve, a main outlet pipe, and a main outlet manual valve. One end of the main inlet pipe is connected to the main cooling water source, and the other end is connected to the inlet of the bearing cooling chamber. The main inlet manual valve is connected in series with the main inlet pipe. One end of the main outlet pipe is connected to the outlet of the bearing cooling chamber, and the other end is connected to the external drainage / return water circulation system. The main outlet manual valve is connected in series with the main outlet pipe. The backup cooling circuit includes a backup cooling water source, a backup inlet pipe, a backup inlet manual valve, a backup outlet pipe, and a backup outlet manual valve; one end of the backup inlet pipe is connected to the backup cooling water source, and the other end is connected to the inlet of the bearing cooling chamber, with the backup inlet manual valve connected in series on the backup inlet pipe; one end of the backup outlet pipe is connected to the outlet of the bearing cooling chamber, and the other end is connected to the external drainage / return water circulation system, with the backup outlet manual valve connected in series on the backup outlet pipe; A temperature monitoring assembly includes a temperature sensor and a temperature display. The temperature sensor is installed on the inner wall of the bearing cooling chamber or on the outer side of the bearing, and the temperature display is electrically connected to the temperature sensor.

2. The manual dual-path cooling system for the bearing of a hot blast stove combustion fan according to claim 1, characterized in that, The main cooling water source is an industrial circulating cooling water system.

3. The manual dual-path cooling system for the bearing of a combustion fan in a hot blast stove according to claim 2, characterized in that, The backup cooling water source is an independently set up emergency industrial open-circuit cooling system.

4. The manual dual-path cooling system for the bearing of a hot blast stove combustion fan according to claim 1, characterized in that, The main water inlet pipe, the backup water inlet pipe, the main water outlet pipe, and the backup water outlet pipe are all made of galvanized pipe.

5. A manual dual-path cooling system for the bearing of a combustion fan in a hot blast stove according to claim 4, characterized in that, The main inlet manual valve, main outlet manual valve, standby inlet manual valve, and standby outlet manual valve are all manual ball valves.

6. The manual dual-path cooling system for the bearing of a combustion fan in a hot blast stove according to claim 1, characterized in that, The temperature monitoring component also includes a temperature alarm unit, which issues an alarm signal when the bearing temperature detected by the temperature sensor exceeds a preset threshold.

7. A manual dual-path cooling system for the bearing of a combustion fan in a hot blast stove according to claim 1, characterized in that, The inner wall of the bearing cooling chamber is made of copper alloy.

8. The manual dual-path cooling system for the bearing of a combustion fan in a hot blast stove according to claim 1, characterized in that, The preset alarm temperature is 65℃, and the preset trip temperature is 80℃.

9. A manual dual-path cooling system for the bearing of a combustion fan in a hot blast stove according to claim 1, characterized in that, The temperature sensor is a PT100 platinum resistance temperature sensor.

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