Rotary air preheater guide bearing anti-freezing water drainage device

Abstract

The application relates to the rotary air preheater equipment protection field, in particular to a rotary air preheater guide bearing anti-freezing water drainage device. The anti-freezing water drainage device is arranged on a bearing box body and comprises a circulating pump communicated with the bearing box body and a water storage tank arranged on the side, away from the bearing box body, of the circulating pump. Water inlet pipes and water outlet pipes are arranged on the same end of the two side walls of the bearing box body, the water inlet pipes and the water outlet pipes are both communicated with the bearing box body, the circulating pump is communicated with the water inlet pipes, the water storage tank is communicated with the circulating pump, and electric heating wires are arranged on the inner wall of the circulating pump. The effect of ensuring the stable operation of the rotary air preheater in a low-temperature environment is achieved.

Description

Technical Field

[0001] This application relates to the field of protection for rotary air preheater equipment, and in particular to an antifreeze and water draining device for the guide bearing of a rotary air preheater. Background Technology

[0002] Currently, in cold regions or low-temperature environments, the cooling water supply to the rotary air preheater's guide bearing housing is shut down during maintenance. This prevents the complete drainage of cooling water from the pipes and bearing housing, making the cooling water pipes highly susceptible to freezing. Once the pipes freeze, it not only affects unit operation but also leads to bearing cooling failure, reducing equipment lifespan. In severe cases, it can even cause equipment malfunctions, resulting in production interruptions and significant economic losses.

[0003] The existing technical solutions mentioned above have the following drawbacks: existing antifreeze measures are not effective in dealing with extreme low temperature environments, or the installation and maintenance costs of antifreeze devices are too high. Utility Model Content

[0004] To ensure the stable operation of the rotary air preheater in low-temperature environments, this application provides an antifreeze and water draining device for the guide bearing of the rotary air preheater.

[0005] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0006] A rotary air preheater guide bearing antifreeze and water draining device is provided. The antifreeze and water draining device is installed on the bearing housing body and includes a circulation pump connected to the bearing housing body and a water storage tank located on the side of the circulation pump away from the bearing housing body. A water inlet pipe and a water outlet pipe are respectively provided at the same end of the two side walls of the bearing housing body. Both the water inlet pipe and the water outlet pipe are connected to the bearing housing body. The circulation pump is connected to the water inlet pipe and the water storage tank is connected to the circulation pump. An electric heating wire is provided on the inner wall of the circulation pump.

[0007] By adopting the above technical solution, and by setting up an inlet pipe, an outlet pipe, a circulation pump connected to the bearing housing body, a water storage tank connected to the circulation pump, and an electric heating wire on the inner wall of the circulation pump, the water in the water storage tank can be heated by the electric heating wire after entering the circulation pump, and then transported to the bearing housing body through the inlet pipe. After that, it forms a circulation from the outlet pipe, keeping the cooling water in the bearing housing body at a suitable temperature, reducing pipe freezing, and helping the equipment to operate in low-temperature environments.

[0008] Optionally, a vertical connecting pipe is provided at the bottom of the bearing housing body, the connecting pipe is connected to the bearing housing body, and a circular drain valve is rotatably provided at the ends of the connecting pipe and the outlet pipe away from the bearing housing body, the drain valve sealing the ends of the connecting pipe and the outlet pipe.

[0009] By adopting the above technical solution, and by setting up a connecting pipe and a drain valve that is rotatably installed at the end of the connecting pipe and the outlet pipe away from the bearing housing body, the cooling water in the bearing housing body can be drained through the connecting pipe and the outlet pipe during winter unit maintenance, thereby reducing the damage to the pipes and bearing housing body caused by water freezing and expansion.

[0010] Optionally, the drain valve panel is coaxially provided with an annular sealing element that is adapted to the inner wall of the connecting pipe and the outlet pipe.

[0011] By adopting the above technical solution and by setting a sealing element, when the drain valve closes the end of the connecting pipe and the outlet pipe, the sealing element can fit against the inner wall of the connecting pipe and the outlet pipe, thereby enhancing the sealing between the drain valve and the connecting pipe and the outlet pipe and reducing the possibility of cooling water leakage.

[0012] Optionally, the drain valve is detachably connected to the connecting pipe and the outlet pipe via a connecting structure. The connecting structure includes a locking rod, a locking pin, and a locking element. The drain valve has a protrusion on its peripheral wall with an installation hole. The locking rod is rotatably mounted in the installation hole. Locking plates are provided at corresponding positions on the outer peripheral walls of the connecting pipe and the outlet pipe. The locking plate has an installation groove on its surface, and the locking element is mounted in the installation groove. A locking pin is fixed to the end of the locking rod, and a locking hole is provided on the end face of the locking element. The locking pin and the locking rod can be inserted into the locking hole, and the locking pin can pass through the locking element.

[0013] By adopting the above technical solution, and by setting a locking rod, a locking pin, a locking element, a protrusion, and a locking plate, the locking rod can be rotatably set in the mounting hole of the protrusion, the locking element can be set in the mounting groove of the locking plate, and the locking pin at the end of the locking rod can be inserted into the locking hole of the locking element and pass through the locking element, so as to realize the detachable connection between the drain valve and the connecting pipe and the outlet pipe, which facilitates the opening and closing of the drain valve.

[0014] Optionally, a locking groove is provided on the end face of the locking member, the locking groove is spaced apart from the locking hole, an annular groove is provided on the peripheral wall of the locking rod, an annular thickened part is machined on the wall of the mounting hole, the annular thickened part is slidably sleeved in the annular groove, and a spring is also provided in the annular groove, the spring is sleeved on the locking rod and located in the annular groove.

[0015] By adopting the above technical solution and setting a spring, the annular thickened part can slide in the annular groove. The spring provides elastic force. When the locking pin passes through the locking hole, rotating the locking rod can make the locking pin enter the locking groove. The elastic force of the spring can make the locking pin stably located in the locking groove, thereby enhancing the fixing effect of the connection structure on the drain door.

[0016] Optionally, the end face of the locking element between the locking groove and the locking hole is machined to form a protruding arc surface.

[0017] By adopting the above technical solution, and by setting a protruding arc surface between the locking groove and the locking hole and machining the end face of the locking part, the locking pin can slide along the protruding arc surface when the locking rod is rotated to move the locking pin from the locking hole to the locking groove. This compresses the spring, reduces the resistance during the movement of the locking pin, facilitates the smooth entry of the locking pin into the locking groove, and reduces the possibility of the locking pin separating from the locking groove.

[0018] Optionally, a temperature sensor is installed on the inner wall of the water storage tank.

[0019] By adopting the above technical solution and setting a temperature sensor, the temperature of the water in the storage tank can be monitored in real time. Combined with the electric heating wire on the inner wall of the circulating pump, the working state of the electric heating wire can be adjusted according to the monitored water temperature to maintain the water temperature in the storage tank within a suitable range, thus providing the bearing housing body with a suitable cooling water temperature.

[0020] Optionally, a locking handle is provided at the end of the locking rod away from the locking pin, and the length direction of the locking handle is perpendicular to the axis of the locking rod.

[0021] By adopting the above technical solution and setting a locking handle, a point of force can be provided for the operator to turn the locking rod with less effort, making it convenient for the operator to operate the connecting structure to open or close the drain valve.

[0022] In summary, this application has the following technical effects:

[0023] 1. By setting up an inlet pipe and an outlet pipe connected to the bearing housing body, a circulation pump connected to the inlet pipe, a water storage tank connected to the circulation pump, and an electric heating wire on the inner wall of the circulation pump, the water in the water storage tank can be heated by the electric heating wire after entering the circulation pump, and then transported to the bearing housing body through the inlet pipe. After that, it forms a circulation from the outlet pipe, keeping the cooling water in the bearing housing body at a suitable temperature, reducing pipe freezing, and helping the equipment to operate in low-temperature environments.

[0024] 2. By installing a connecting pipe and a drain valve that is rotatably installed at the end of the connecting pipe and the outlet pipe away from the bearing housing body, the cooling water in the bearing housing body can be drained through the connecting pipe and the outlet pipe during winter unit maintenance, reducing the damage to the pipes and bearing housing body caused by water freezing and expansion.

[0025] 3. By setting a locking rod, locking pin, and locking element, as well as a protrusion and a locking plate, the locking rod can be rotatably set in the mounting hole of the protrusion, the locking element can be set in the mounting groove of the locking plate, and the locking pin at the end of the locking rod can be inserted into the locking hole of the locking element and pass through the locking element, so as to realize the detachable connection between the drain valve and the connecting pipe and the outlet pipe, which facilitates the opening and closing of the drain valve. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the object of this application;

[0027] Figure 2 This is a structural diagram from another perspective of this application;

[0028] Figure 3 This is a structural diagram of the connection structure in this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Bearing housing body; 11. Inlet pipe; 12. Outlet pipe; 13. Connecting pipe; 14. Locking plate; 2. Circulating pump; 21. Water storage tank; 3. Drain valve; 31. Seal; 4. Connecting structure; 41. Locking rod; 411. Ring groove; 412. Locking handle; 42. Spring; 43. Locking pin; 44. Locking element; 441. Locking hole; 442. Locking groove; 443. Protruding arc surface. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses an antifreeze and water draining device for a rotary air preheater guide bearing, referring to... Figure 1 The system includes a circulating pump 2 connected to the bearing housing body 1, a water storage tank 21 connected to the circulating pump 2, a drain valve 3 located at the bottom of the bearing housing body 1, and a connecting structure 4 connecting the drain valve 3 and the bearing housing body 1. The water storage tank 21 heats the bearing cooling water entering the circulating pump 2, keeping the bearing cooling water at a suitable temperature and ensuring that the water temperature entering the circulation system is maintained within a certain range to prevent the pipes from freezing. By setting the drain valve 3, the cooling water in the bearing housing can be drained in time during winter unit maintenance to prevent damage to the pipes and bearing housing due to water freezing and expansion. The connecting structure 4 allows for quick closing and opening of the drain valve 3, improving efficiency.

[0032] Combination Figure 1 and Figure 2 The bearing housing body 1 is cylindrical and horizontally positioned. A water inlet pipe 11 and a water outlet pipe 12 are respectively installed at the same end of both side walls of the bearing housing body 1. Both the water inlet pipe 11 and the water outlet pipe 12 are connected to the bearing housing body 1, their axes coincide, and both are perpendicular to the side walls of the bearing housing. A circulation pump 2 is located at the end of the water inlet pipe 11 furthest from the bearing housing body 1, and the circulation pump 2 is connected to the water inlet pipe 11.

[0033] Combination Figure 1 and Figure 2A water storage tank 21 is located on the side of the circulating pump 2 away from the bearing housing, and the lower part of the side wall of the water storage tank 21 is connected to the circulating pump 2. An electric heating wire is installed on the inner wall of the water storage tank 21, and temperature sensors are installed at intervals between the heating wire and the side wall of the water storage tank 21. Water heated to a specified temperature in the water storage tank 21 is pumped by the circulating pump 2 into the bearing housing body 1 to cool the air preheater guide bearing. A vertical connecting pipe 13 is installed at the bottom of the bearing housing body 1, with its upper end connected to the bearing housing body 1. A drain valve 3 is rotatably installed at the lower end of the connecting pipe 13 and the end of the outlet pipe 12 away from the bearing housing body 1.

[0034] Combination Figure 1 and Figure 2 The drain valve 3 is a circular plate. The axis of the drain valve 3 coincides with the axis of the connecting pipe 13 and the outlet pipe 12. The surface of the drain valve 3 is in contact with the end face of the connecting pipe 13 and the end face of the outlet pipe 12. A ring-shaped sealing element 31 is coaxially provided on the surface of the drain valve 3. The sealing element 31 is adapted to the inner wall of the connecting pipe 13 and the outlet pipe 12. The sealing element 31 can seal the connection between the drain valve 3 and the connecting pipe and the outlet pipe 12.

[0035] Combination Figure 2 and Figure 3 The periphery of the drain valve 3 is flush with the outer periphery of the connecting pipe 13 and the outlet pipe 12. The periphery of the drain valve 3 is hinged to the outer periphery of the connecting pipe 13 and the outlet pipe 12. A connecting structure 4 is provided on the side opposite to the hinge on the periphery of the drain valve 3. The connecting structure 4 includes a locking rod 41, a spring 42 and a locking pin 43. A locking plate 14 is provided at the corresponding position on the outer periphery of the connecting pipe 13 and the outlet pipe 12. The surface of the locking plate 14 is perpendicular to the axis of the connecting pipe 13 and the outlet pipe 12. The side wall of the locking plate 14 is fixed to the outer periphery of the connecting pipe 13 and the outlet pipe 12. The surface of the locking plate 14 away from the bearing housing body is flush with the end face of the connecting pipe 13 and the outlet pipe 12.

[0036] Combination Figure 2 and Figure 3The drain valve has a protrusion on its periphery opposite the hinge. A mounting hole is provided on the protrusion, connecting the two surfaces of the protrusion. An annular thickened portion is machined into the wall of the mounting hole, with its axis coinciding with the axis of the mounting hole. The side wall of the annular thickened portion is flush with the surface of the protrusion away from the connecting pipe 13. The locking rod 41 is a round rod, rotatably mounted within the mounting hole and the annular thickened portion. The length of the locking rod 41 is perpendicular to the surface of the protrusion. An annular groove 411 is provided on the periphery of the locking rod 41. The annular thickened portion fits into and slides on the locking rod 41, with its inner wall slidingly against the bottom of the groove 411. A spring 42 is located within the mounting hole and fitted onto the locking rod 41, situated between the groove wall of the annular groove 411 and the side wall of the annular thickened portion. A locking pin 43 is fixedly installed at the end of the locking rod 41, and the locking pin 43 passes through the locking rod 41. The length direction of the locking pin 43 is perpendicular to the length direction of the locking rod 41. A locking handle 412 is fixedly installed on the end of the locking rod 41 away from the locking pin 43. The length direction of the locking handle 412 is perpendicular to the length direction of the locking rod 41.

[0037] Combination Figure 2 and Figure 3 The locking plate 14 has a circular mounting groove on its surface. The connecting structure 4 also includes a cylindrical locking member 44. The locking member 44 is coaxially fixed in the mounting groove. One end face of the locking member 44 is flush with the surface of the locking plate 14, and the other side surface of the locking member 44 is spaced apart from the bottom of the mounting groove. The peripheral wall of the locking member 44 is in contact with the wall of the mounting groove. A locking hole 441 is provided on the surface of the locking member 44. The locking hole 441 connects the two end faces of the locking member 44. The locking hole 441 is adapted to the locking rod 41 and the locking pin 43, and the locking rod 41 and the locking pin 43 can be slidably inserted into the locking hole 441. When the protrusion is in contact with the surface of the locking plate 14, the locking pin 43 passes through the locking member 44. A locking groove 442 is provided on the surface of the locking member 44 near the bottom of the mounting groove. The locking groove 442 is located next to the locking hole 441. The locking pin 43 is adapted to the locking groove 442 and can be inserted into the locking groove 442. The surface of the locking member 44 between the locking groove 442 and the locking hole 441 is machined to form a protruding arc surface 443 with an arc.

[0038] Combination Figure 2 and Figure 3 When the protrusion is in contact with the surface of the locking plate 14, the sealing element 31 is inserted into the end of the connecting pipe 13 and the outlet pipe 12. The locking pin 43 passes through the locking element 44 through the locking hole 441. When the locking handle 412 is rotated, the locking pin 43 compresses the spring 42 when it passes the protruding arc surface 443. When it is inserted into the locking groove 442, the spring 42 is released. The spring 42 can keep the locking pin 43 in the locking groove 442 without rotating the locking handle 412, thus fixing the waterproof plate to the end of the connecting pipe 13 and the outlet pipe 12. The connecting structure 4 facilitates opening or closing the drain valve 3.

[0039] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A rotary air preheater guide bearing antifreeze and water draining device, wherein the antifreeze and water draining device is installed on the bearing housing body (1), characterized in that: The system includes a circulation pump (2) connected to the bearing housing body (1) and a water storage tank (21) located on the side of the circulation pump (2) away from the bearing housing body (1). The bearing housing body (1) has an inlet pipe (11) and an outlet pipe (12) at the same end of both side walls. The inlet pipe (11) and the outlet pipe (12) are both connected to the bearing housing body (1). The circulation pump (2) is connected to the inlet pipe (11). The water storage tank (21) is connected to the circulation pump (2). The inner wall of the circulation pump (2) is equipped with an electric heating wire.

2. The antifreeze and water draining device for the guide bearing of the rotary air preheater according to claim 1, characterized in that: The bearing housing body (1) is provided with a vertical connecting pipe (13) at the bottom. The connecting pipe (13) is connected to the bearing housing body (1). The ends of the connecting pipe (13) and the water outlet pipe (12) away from the bearing housing body (1) are rotatably provided with circular drain gates (3). The drain gates (3) close the ends of the connecting pipe (13) and the water outlet pipe (12).

3. The antifreeze and water draining device for the guide bearing of the rotary air preheater according to claim 2, characterized in that: The drain valve (3) is coaxially provided with an annular sealing element (31) that is adapted to the inner wall of the connecting pipe (13) and the outlet pipe (12).

4. The antifreeze and water draining device for the guide bearing of the rotary air preheater according to claim 2, characterized in that: The drain valve (3) is detachably connected to the connecting pipe and the outlet pipe (12) via a connecting structure (4). The connecting structure (4) includes a locking rod (41), a locking pin (43), and a locking element (44). The drain valve (3) has a protrusion on its peripheral wall, and an installation hole is provided on the protrusion. The locking rod (41) is rotatably installed in the installation hole. Locking plates (14) are provided at corresponding positions on the outer peripheral walls of the connecting pipe (13) and the outlet pipe (12). The locking plate (14) has an installation groove on its surface. The locking element (44) is installed in the installation groove. The locking pin (43) is fixedly connected to the end of the locking rod (41). The locking hole (441) is provided on the end face of the locking element (44). The locking pin (43) and the locking rod (41) can be inserted into the locking hole (441). The locking pin (43) can pass through the locking element (44).

5. The antifreeze and water draining device for the guide bearing of the rotary air preheater according to claim 4, characterized in that: The locking member (44) has a locking groove (442) on its end face. The locking groove (442) is spaced apart from the locking hole (441). The locking rod (41) has an annular groove (411) on its peripheral wall. The mounting hole wall is machined with an annular thickened part. The annular thickened part is slidably sleeved in the annular groove (411). A spring (42) is also provided in the annular groove (411). The spring (42) is sleeved on the locking rod (41) and located in the annular groove (411).

6. The antifreeze and water draining device for the guide bearing of the rotary air preheater according to claim 5, characterized in that: The end face of the locking member (44) between the locking groove (442) and the locking hole (441) is machined to form a protruding arc surface (443).

7. The antifreeze and water draining device for the guide bearing of the rotary air preheater according to claim 1, characterized in that: A temperature sensor is installed on the inner wall of the water storage tank (21).

8. The antifreeze and water draining device for the guide bearing of the rotary air preheater according to claim 6, characterized in that: The locking handle (412) is provided at the end of the locking rod (41) away from the locking post (43), and the length direction of the locking handle (412) is perpendicular to the axis of the locking rod (41).

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