Air-drawing type air cooler capable of avoiding fan shaft wobble

Abstract

The application relates to the technical field of air coolers, and provides an air-inducing air cooler capable of avoiding fan shaft shaking, which is arranged in a cover shell of the air-inducing air cooler, a tube bundle and a fan shaft are arranged in the cover shell, the fan shaft penetrates through the tube bundle, a fan blade is arranged at the upper end of the fan shaft, a shaft sleeve is arranged on the fan shaft, a plurality of inverted triangular supporting assemblies are evenly arranged between the shaft sleeve and the cover shell in the circumferential direction and are used for supporting and fixing the shaft sleeve, the air-inducing air cooler further comprises a monitoring assembly for monitoring the vertical state of the fan shaft in real time, the shaft sleeve is arranged outside the fan shaft, a plurality of inverted triangular supporting assemblies are evenly arranged between the shaft sleeve and cover shell in the circumferential direction to form stable support for the fan shaft, the problem of fan shaft shaking is effectively solved, the fan blade does not swing during operation, the use safety of the air-inducing air cooler is ensured, the driving motor can be effectively protected, and the service life of the driving motor is prolonged.

Description

Technical Field

[0001] This invention relates to the field of air cooler technology, specifically an induced draft air cooler that can prevent fan shaft wobbling. Background Technology

[0002] Air coolers are the most widely used heat exchange equipment for condensation and cooling in petrochemical and oil and gas processing production. They are generally composed of tube bundles, tube boxes, fans, louvers and frames, and are mainly used in conjunction with air coolers in petroleum, chemical and metallurgical industries. They have the advantages of large air volume, high efficiency, low vibration, low noise and convenient use and maintenance.

[0003] Currently, air coolers can be divided into forced draft and induced draft types according to their cooling method. Induced draft air coolers have a larger market share because the air flows through the tube bundle first and then into the fan, resulting in a more uniform airflow distribution, which is conducive to precise temperature control and low noise. Existing induced draft air coolers typically have the fan motor installed at the bottom of the tube bundle, while the fan blades are located at the top of the tube bundle. This increases the length of the fan shaft, which can easily cause the fan blades to wobble due to the long fan shaft, posing a certain safety hazard. Moreover, over time, it can easily damage the fan motor.

[0004] Therefore, this invention proposes an induced draft air cooler that can avoid fan shaft wobbling to solve the above problems. Summary of the Invention

[0005] The purpose of embodiments of the present invention is to provide an induced draft air cooler that can avoid fan shaft wobbling, so as to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An induced draft air cooler that can prevent fan shaft wobbling is provided in the housing of the induced draft air cooler. The housing is provided with tube bundle, fan shaft and drive motor for driving fan shaft rotation. The fan shaft is provided through tube bundle and has fan blades at the upper end. A bushing is fitted on the fan shaft. Multiple sets of inverted triangular support components are evenly provided circumferentially between the bushing and the housing to support and fix the bushing.

[0008] The induced draft air cooler also includes a monitoring component for real-time monitoring of the vertical state of the fan shaft.

[0009] In one alternative: the inverted triangular support assembly includes a first connector on the cover, a horizontal support on the first connector, and an inclined support on the first connector, wherein the ends of the horizontal support and the inclined support away from the first connector are connected to the bushing.

[0010] In one alternative: the bushing is provided with a second connector and a third connector on the sleeve segment above the tube bundle; the horizontal support members in the multiple sets of inverted triangular support assemblies are all connected to the second connector at the end away from the first connector; and the oblique support members in the multiple sets of inverted triangular support assemblies are all connected to the third connector at the end away from the first connector.

[0011] In one alternative: the horizontal support member is connected to the first and second connecting members, the diagonal support member is connected to the first and third connecting members, and the first connecting member is connected to the cover by bolts.

[0012] In one alternative: the angle between the inclined support and the bushing is an acute angle.

[0013] In one alternative: the upper end of the fan shaft extends above the fan blades, the monitoring component includes a laser generator disposed above the fan shaft and a receiver disposed below the fan shaft, the laser generator is used to generate a laser beam, the receiver is provided with a laser sensing area for sensing the laser beam, the laser generator is perpendicularly corresponding to the laser sensing area, and the fan shaft is provided with a channel for the laser beam to pass through.

[0014] The monitoring component also includes an alarm component, which is used to issue an alarm when the monitoring component detects that the fan shaft tilt has reached an alarm threshold.

[0015] In one alternative: a transparent sealing sheet is provided at the upper end of the channel, and the upper side of the transparent sealing sheet is flush with the upper end face of the fan shaft. The transparent sealing sheet and the upper end of the fan shaft are provided with X-axis distance scale lines, Y-axis distance scale lines and angle scale lines.

[0016] In one alternative: the induced draft air cooler further includes a cleaning assembly for cleaning the transparent sealing sheet, the cleaning assembly including an air collection hopper located below the tube bundle and an air guide pipe located on the casing, one end of the air guide pipe being connected to the exhaust end of the air collection hopper, and the other end being conical and facing the transparent sealing sheet.

[0017] In one alternative: the section of the air duct located outside the casing is also provided with heat dissipation fins.

[0018] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0019] 1. A bushing is fitted over the outside of the fan shaft, and multiple sets of inverted triangular support components are evenly arranged circumferentially between the bushing and the cover to form a stable support for the fan shaft, effectively solving the problem of fan shaft shaking, so that the fan blades do not wobble when working, ensuring the safety of the induced draft air cooler, and also effectively protecting the drive motor and extending the service life of the drive motor.

[0020] 2. The monitoring components monitor the vertical status of the fan shaft in real time. When the fan shaft tilt reaches the alarm threshold, an alarm is issued to remind the staff to carry out maintenance, ensuring the safe, stable and efficient operation of the air cooler.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Furthermore, these drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram showing the arrangement of the bushing, fan shaft, second connector, and third connector in an embodiment of the present invention.

[0025] Figure 3 This is a top view of the receiver in an embodiment of the present invention.

[0026] Figure 4 This is a top view of the fan shaft in an embodiment of the present invention.

[0027] Figure 5 This is a partial schematic diagram showing the arrangement between the air duct and the heat dissipation fins in an embodiment of the present invention.

[0028] Figure reference numerals: 1-Cover, 2-Tube bundle, 3-Inverted triangular support assembly, 301-Horizontal support, 302-First connector, 303-Diagonal support, 4-Fan blade, 5-Shaft sleeve, 6-Fan shaft, 7-Crossbeam, 8-Drive motor, 9-Monitoring assembly, 901-Bracket, 902-Laser generator, 903-Receiver, 904-Channel, 905-Photoelectric sensing area, 10-X-direction distance scale line, 11-Y-direction distance scale line, 12-Angle scale line, 13-Transparent sealing plate, 14-Second connector, 15-Third connector, 16-Cleaning assembly, 1601-Gas collection hopper, 1602-Gas duct, 1603-Heat dissipation fins. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Please see Figure 1 and Figure 2 An induced draft air cooler that can prevent fan shaft wobbling is provided in the housing 1 of the induced draft air cooler. The housing 1 is provided with tube bundle 2, fan shaft 6 and drive motor 8 for driving the fan shaft 6 to rotate. The fan shaft 6 is provided through tube bundle 2 and has fan blades 4 at the upper end. A bushing 5 is sleeved on the fan shaft 6. Multiple sets of inverted triangular support components 3 are evenly provided circumferentially between the bushing 5 and the housing 1 to support and fix the bushing 5.

[0031] The induced draft air cooler also includes a monitoring component 9 for real-time monitoring of the vertical state of the fan shaft 6.

[0032] It should be noted that the cover 1 has an overall shape of round top and square bottom, and the cover 1 is provided with a crossbeam 7 below the tube bundle 2. The drive motor 8 is located on the crossbeam 7 to drive the fan shaft 6, thereby driving the fan blade 4 to rotate to achieve air extraction.

[0033] A bushing 5 is fitted over the fan shaft 6, and multiple sets of inverted triangular support components 3 are evenly arranged circumferentially between the bushing 5 and the housing 1 to form a stable support for the fan shaft 6, effectively solving the problem of fan shaft 6 shaking, so that the fan blades 4 do not wobble when working, ensuring the safety of the induced draft air cooler, and also effectively protecting the drive motor 8 and extending the service life of the drive motor 8; in addition, the vertical status of the fan shaft 6 is monitored in real time by the monitoring component 9, and an alarm is issued when the tilt of the fan shaft 6 reaches the alarm threshold, reminding the staff to carry out maintenance, ensuring the safe, stable and efficient operation of the air cooler.

[0034] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the inverted triangular support assembly 3 includes a first connector 302 disposed on the cover 1, a horizontal support 301 disposed horizontally on the first connector 302, and an inclined support 303 disposed obliquely on the first connector 302. The ends of the horizontal support 301 and the inclined support 303 away from the first connector 302 are both connected to the bushing 5, and the angle between the inclined support 303 and the bushing 5 is an acute angle.

[0035] The bushing 5 is provided with a second connector 14 and a third connector 15 on the sleeve section above the tube bundle 2. The horizontal support 301 in the multiple sets of inverted triangular support assemblies 3 is connected to the second connector 14 at the end away from the first connector 302. The inclined support 303 in the multiple sets of inverted triangular support assemblies 3 is connected to the third connector 15 at the end away from the first connector 302.

[0036] The horizontal support 301 is connected to the first connector 302 and the second connector 14, the inclined support 303 is connected to the first connector 302 and the third connector 15, and the first connector 302 is connected to the cover 1 by bolts.

[0037] In this embodiment, both the horizontal support 301 and the inclined support 303 are angle steel. Of course, other materials with equivalent strength can also be used to achieve stable support for the bushing 5. This embodiment does not limit the specific materials used. In addition, in this embodiment, the specific construction steps between the multiple sets of inverted triangular support components 3 and the bushing 5 are as follows:

[0038] S1: Manufacture the second connector 14 and the third connector 15 according to the specifications of the bushing 5, and evenly arrange multiple sets of bolt holes in the second connector 14 and the third connector 15 in the circumferential direction, which are the same as the number of inverted triangular support components 3 (the number of bolt holes in a set can be 1 or 2, which is not limited here. In addition, this embodiment is described by taking 12 sets of inverted triangular support components 3 as an example). Weld the manufactured second connector 14 and the third connector 15 onto the bushing 5.

[0039] S2: Fix the first connector 302 to the cover 1 with bolts. Based on the distance between the first connector 302 and the second connector 14 (measured on site), manufacture 12 horizontal support members 301 of the same length and specifications, and connect and assemble the 12 horizontal support members 301 in sequence (the two ends of the horizontal support member 301 are fixedly connected to the first connector 302 and the second connector 14 respectively with bolts).

[0040] S3: Based on the distance between the first connector 302 and the third connector 15 (measured on site), manufacture 12 inclined support members 303 of the same length and specifications, and connect and assemble the 12 inclined support members 303 in sequence (the two ends of the inclined support member 303 are fixedly connected to the first connector 302 and the third connector 15 respectively by bolts).

[0041] It should be noted that when manufacturing the horizontal support 301 by measuring the distance between the first connector 302 and the second connector 14, and manufacturing the inclined support 303 by measuring the distance between the first connector 302 and the third connector 15, it is necessary to ensure the verticality of the bushing 5 and its concentricity with the upper opening of the cover 1, so as to ensure the circumferential distance between the fan blade 4 and the upper opening of the cover 1 when it is running. After all the horizontal support 301 and inclined support 303 are installed, the horizontal support 301, inclined support 303 and bushing 5 form an inverted triangle shape, thereby ensuring stable and high-strength support for the bushing 5, ensuring the stability of the fan blade 4 when it is running, and at the same time protecting the drive motor 8 and extending the service life of the drive motor 8.

[0042] Please see Figures 1-4 In one embodiment of the present invention, the upper end of the fan shaft 6 extends above the fan blade 4, and the monitoring component 9 includes a laser generator 902 disposed above the fan shaft 6 and a receiver 903 disposed below the fan shaft 6. The laser generator 902 is used to generate a laser beam, and the receiver 903 is provided with a laser sensing area 905 for sensing the laser beam. The laser generator 902 and the laser sensing area 905 are perpendicularly corresponding, and the fan shaft 6 is provided with a channel 904 for the laser beam to pass through.

[0043] The monitoring component 9 also includes an alarm component (not shown in the figure), which is used to trigger an alarm when the monitoring component 9 detects that the tilt of the fan shaft 6 reaches the alarm threshold.

[0044] In this embodiment, under normal circumstances, the laser generator 902 generates a laser beam that passes through the channel 904 and irradiates the laser sensing area 905. When the fan shaft 6 is tilted, the channel 904 is tilted accordingly. When the fan shaft 6 is tilted to a certain extent, the tilt of the channel 904 is too large to meet the requirements for the laser beam to pass through, thus blocking the laser beam. As a result, the laser sensing area 905 no longer senses the laser beam, which means that the alarm threshold has been reached (this threshold is determined by the diameter of the channel 904 and is set according to the actual application scenario of the air cooler). The alarm device is activated to remind the staff to carry out maintenance. It should be noted that the photoelectric sensing technology on which the laser sensing area 905 senses the laser beam and the corresponding control technology for activating the alarm device when the alarm threshold is reached are both existing and mature technologies, and there are no technical obstacles. This embodiment will not elaborate on them here.

[0045] Furthermore, in this embodiment, the monitoring component 9 also includes a bracket 901, and the laser generator 902 is mounted on the bracket 901; in addition, the alarm device is a buzzer or a warning light, or other devices capable of alarming and reminding, which is not limited in this embodiment.

[0046] Furthermore, in this embodiment, a transparent sealing plate 13 is provided at the upper end of the channel 904, and the upper side of the transparent sealing plate 13 is flush with the upper end surface of the fan shaft 6. The transparent sealing plate 13 and the upper end of the fan shaft 6 are provided with X-direction distance scale line 10, Y-direction distance scale line 11 and angle scale line 12 (specific values ​​are not shown in the figure). After the fan shaft 6 is tilted and an alarm is triggered, the laser beam will fall on the upper end of the fan shaft 6. By reading the value information of the X-direction distance scale line 10, Y-direction distance scale line 11 and angle scale line 12 at the point where the laser beam falls, maintenance personnel can intuitively and quickly understand the tilt direction and degree of the fan shaft 6, thereby formulating a maintenance plan. In addition, the transparent sealing plate 13 blocks the upper end of the channel 904 to prevent external debris from entering the channel 904 and blocking the laser beam, thus affecting normal monitoring.

[0047] Please see Figure 1 and Figure 5 In one embodiment of the present invention, the induced draft air cooler further includes a cleaning component for cleaning the transparent sealing plate 13. The cleaning component includes an air collecting hopper 1601 located below the tube bundle 2 and an air guide pipe 1602 located on the cover 1. One end of the air guide pipe 1602 is connected to the exhaust end of the air collecting hopper 1601, and the other end is conical and faces the transparent sealing plate 13.

[0048] In this embodiment, during airflow, dust carried in the airflow will deposit and cover the transparent sealing plate 13, potentially obstructing the laser beam. Therefore, a cleaning component is provided to clean the transparent sealing plate 13. Specifically, after the introduced airflow passes through the tube bundle 2, a portion enters the air collection hopper 1601, and then is transmitted through the air guide pipe 1602 and sprayed toward the transparent sealing plate 13. Since the end of the air guide pipe 1602 facing the transparent sealing plate 13 is conical, it acts as a pressurized airflow, resulting in a large impact force of the discharged airflow, which can effectively blow away the dust adhering to the transparent sealing plate 13, achieving the cleaning effect.

[0049] Furthermore, in this embodiment, the section of the air duct 1602 located outside the casing 1 is also provided with heat dissipation fins 1603. It should be noted that the heat dissipation fins 1603 are partially located inside the air duct 1602. After the airflow exchanges heat with the tube bundle 2, the temperature rises. In order to avoid the high temperature of the "returning" airflow affecting the heat exchange effect, by setting heat dissipation fins 1603 on the air duct 1602, the airflow collected by the air collecting bucket 1601 is cooled down during its flow along the air duct 1602, thereby avoiding the impact on the heat exchange between the airflow and the tube bundle 2.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An induced draft air cooler that prevents fan shaft wobbling, disposed in a housing (1) of an induced draft air cooler, wherein the housing (1) is provided with a tube bundle (2), a fan shaft (6), and a drive motor (8) for driving the fan shaft (6) to rotate, the fan shaft (6) being disposed through the tube bundle (2), and having fan blades (4) at its upper end, characterized in that, A bushing (5) is fitted on the fan shaft (6), and multiple sets of inverted triangular support components (3) are evenly arranged circumferentially between the bushing (5) and the cover (1) to support and fix the bushing (5). The induced draft air cooler also includes a monitoring component (9) for real-time monitoring of the vertical state of the fan shaft (6). The inverted triangular support assembly (3) includes a first connector (302) disposed on the cover (1), a horizontal support (301) disposed horizontally on the first connector (302), and an inclined support (303) disposed inclinedly on the first connector (302). The ends of the horizontal support (301) and the inclined support (303) away from the first connector (302) are both connected to the bushing (5). The bushing (5) is provided with a second connector (14) and a third connector (15) on the sleeve segment above the tube bundle (2). The horizontal support (301) in the multiple sets of inverted triangular support assemblies (3) is connected to the second connector (14) at the end away from the first connector (302). The inclined support (303) in the multiple sets of inverted triangular support assemblies (3) is connected to the third connector (15) at the end away from the first connector (302). The upper end of the fan shaft (6) extends above the fan blades (4). The monitoring component (9) includes a laser generator (902) located above the fan shaft (6) and a receiver (903) located below the fan shaft (6). The laser generator (902) is used to generate a laser beam. The receiver (903) is provided with a laser sensing area (905) for sensing the laser beam. The laser generator (902) and the laser sensing area (905) are perpendicularly corresponding. The fan shaft (6) is provided with a channel (904) for the laser beam to pass through. The monitoring component (9) also includes an alarm component, which is used to issue an alarm when the monitoring component (9) detects that the tilt of the fan shaft (6) reaches the alarm threshold; The upper end of the channel (904) is provided with a transparent sealing plate (13), and the upper side of the transparent sealing plate (13) is flush with the upper end of the fan shaft (6). The transparent sealing plate (13) and the upper end of the fan shaft (6) are provided with X-direction distance scale line (10), Y-direction distance scale line (11) and angle scale line (12). The induced draft air cooler also includes a cleaning assembly for cleaning the transparent sealing plate (13). The cleaning assembly includes an air collecting hopper (1601) located below the tube bundle (2) and an air guide pipe (1602) located on the cover (1). One end of the air guide pipe (1602) is connected to the exhaust end of the air collecting hopper (1601), and the other end is conical and faces the transparent sealing plate (13).

2. The induced draft air cooler that avoids fan shaft wobbling according to claim 1, characterized in that, The horizontal support (301) is connected to the first connector (302) and the second connector (14), the inclined support (303) is connected to the first connector (302) and the third connector (15), and the first connector (302) is connected to the cover (1) by bolts.

3. The induced draft air cooler that avoids fan shaft wobbling according to claim 1, characterized in that, The angle between the inclined support (303) and the bushing (5) is an acute angle.

4. The induced draft air cooler that avoids fan shaft wobbling according to claim 1, characterized in that, The air duct (1602) is provided with heat dissipation fins (1603) on the section of the duct outside the cover (1).

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