Induced air type air cooler capable of preventing fan shaft from shaking

Abstract

The invention relates to the technical field of air coolers, and provides an induced air cooler capable of preventing a fan shaft from shaking. The induced air cooler is arranged in a housing of the induced air cooler, a tube bundle and the fan shaft are arranged in the housing, the fan shaft penetrates through the tube bundle, fan blades are arranged at the upper end of the fan shaft, a shaft sleeve is arranged on the fan shaft in a sleeving mode, and the shaft sleeve is sleeved with an air inlet. A plurality of groups of inverted triangular supporting assemblies are uniformly arranged between the shaft sleeve and the housing in the circumferential direction and are used for supporting and fixing the shaft sleeve; the induced air type air cooler further comprises a monitoring assembly used for monitoring the vertical state of the fan shaft in real time. The shaft sleeve is arranged outside the fan shaft in a sleeving mode, the inverted-triangle-shaped supporting assemblies are evenly arranged between the shaft sleeve and the housing in the circumferential direction, and therefore the fan shaft is stably supported, the problem that the fan shaft shakes is effectively solved, the fan blades do not swing when working, the use safety of the induced air type air cooler is guaranteed, and meanwhile the drive motor can be effectively protected. The service life of the driving motor is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of air coolers, in particular to an induced draft air cooler capable of preventing a fan shaft from shaking. Background Art

[0002] Air cooler is the most widely used heat exchange equipment for condensation and cooling in petrochemical industry and oil and gas processing production. It is generally composed of main parts such as tube bundle, tube box, fan, louver and frame. It is mainly used in conjunction with air coolers in petroleum, chemical industry, metallurgy, etc. It has the advantages of large air volume, high efficiency, low vibration, low noise, and easy use and maintenance.

[0003] Currently, air coolers can be divided into forced draft type and induced draft type according to the cooling method. In induced draft air coolers, the air first flows through the tube bundle and then flows into the fan, so the air flow is evenly distributed, which is conducive to precise temperature control and low noise. Therefore, it has a larger market share. The fan motor of existing induced draft air coolers is usually 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 and easily causes the fan blades to shake due to the long fan shaft. This poses certain safety hazards and can easily cause damage to the fan motor over time.

[0004] Therefore, the present invention proposes an induced draft air cooler that can prevent the fan shaft from shaking to solve the above problem. Summary of the Invention

[0005] An embodiment of the present invention aims to provide an induced draft air cooler that can prevent the fan shaft from shaking, so as to solve the above-mentioned problem.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An induced draft air cooler capable of preventing a fan shaft from shaking is provided in a housing of the induced draft air cooler. The housing comprises a tube bundle, a fan shaft, and a drive motor for driving the fan shaft to rotate. The fan shaft passes through the tube bundle, and a fan blade is provided at the upper end of the fan shaft. A shaft sleeve is provided on the fan shaft, and a plurality of inverted triangular support assemblies are uniformly provided circumferentially between the shaft sleeve and the housing to support and fix the shaft sleeve.

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

[0009] In an optional solution: the inverted triangle support assembly includes a first connecting member arranged on the cover shell, a horizontal support member horizontally arranged on the first connecting member, and an oblique support member obliquely arranged on the first connecting member, and the ends of the horizontal support member and the oblique support member away from the first connecting member are both connected to the shaft sleeve.

[0010] In an optional solution: a second connecting member and a third connecting member are provided on the sleeve section above the tube bundle, and the ends of the horizontal supports in the multiple groups of inverted triangle support assemblies away from the first connecting member are all connected to the second connecting member, and the ends of the oblique supports in the multiple groups of inverted triangle support assemblies away from the first connecting member are all connected to the third connecting member.

[0011] In an optional solution, the horizontal support member and the first and second connecting members, the oblique support member and the first and third connecting members, and the first connecting member and the cover are all connected by bolts.

[0012] In an optional solution, the angle between the oblique support member and the shaft sleeve is an acute angle.

[0013] In one optional solution, the upper end of the fan shaft extends above the fan blades, the monitoring assembly includes a laser generator disposed above the fan shaft and a receiver disposed below the fan shaft, the laser generator is configured to generate a laser beam, the receiver is provided with a laser sensing area for sensing the laser beam, the laser generator is perpendicularly aligned with the laser sensing area, and a channel for the laser beam to pass through is provided in the fan shaft;

[0014] The monitoring component also includes an alarm component for sounding an alarm when the monitoring component detects that the fan shaft inclination reaches an alarm threshold.

[0015] In an optional solution: a transparent blocking piece is provided at the upper end of the channel, and the upper side of the transparent blocking piece is flush with the upper end surface of the fan shaft, and X-direction distance scale lines, Y-direction distance scale lines and angle scale lines are provided on the transparent blocking piece and the upper end of the fan shaft.

[0016] In an optional solution: the induced draft air cooler also includes a cleaning assembly for cleaning the transparent sealing piece, the cleaning assembly includes an air collecting hopper arranged below the tube bundle and an air duct arranged on the cover shell, one end of the air duct is connected to the exhaust end of the air collecting hopper, and the other end is conical and faces the transparent sealing piece.

[0017] In an optional solution, heat dissipation fins are further arranged on the section of the air duct located outside the housing.

[0018] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0019] 1. A shaft sleeve is installed on the outside of the fan shaft, and multiple sets of inverted triangle support components are evenly arranged circumferentially between the shaft sleeve 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 swing when working, ensuring the safety of the induced draft air cooler. At the same time, it can also effectively protect the drive motor and extend the service life of the drive motor;

[0020] 2. The vertical state of the fan shaft is monitored in real time through the monitoring component. When the fan shaft inclination reaches the alarm threshold, an alarm is issued to remind the staff to carry out maintenance to ensure the safe, stable and efficient operation of the air cooler.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are incorporated into and constitute a part of the specification to illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application. These drawings and the accompanying description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

[0023] Figure 1 Schematic diagram of the structure of an embodiment of the present invention.

[0024] Figure 2 Schematic diagram of the arrangement between the shaft sleeve, the fan shaft, the second connecting member and the third connecting member in an embodiment of the present invention.

[0025] Figure 3 2 is a top view of the receiving component in an embodiment of the present invention.

[0026] Figure 4 2 is a top view of the fan shaft in an embodiment of the present invention.

[0027] Figure 5 Schematic diagram (partial) of the arrangement between the air duct and the heat dissipation fins in an embodiment of the present invention.

[0028] Notes on figure numbers: 1-cover, 2-tube bundle, 3-inverted triangle support assembly, 301-horizontal support, 302-first connecting piece, 303-inclined support, 4-fan blades, 5-shaft sleeve, 6-fan shaft, 7-crossbeam, 8-drive motor, 9-monitoring assembly, 901-bracket, 902-laser generator, 903-receiving element, 904-channel, 905-photoelectric sensing area, 10-X-distance scale line, 11-Y-distance scale line, 12-angle scale line, 13-transparent sealing piece, 14-second connecting piece, 15-third connecting piece, 16-cleaning assembly, 1601-gas collecting hopper, 1602-air duct, 1603-heat sinking fins. DETAILED DESCRIPTION

[0029] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] See also Figure 1 and Figure 2 An induced draft air cooler that can prevent the fan shaft from shaking is provided in a housing 1 of the induced draft air cooler. 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 is arranged through the tube bundle 2, and a fan blade 4 is provided at the upper end of the fan shaft 6. A shaft sleeve 5 is provided on the fan shaft 6. A plurality of inverted triangle support assemblies 3 are evenly arranged circumferentially between the shaft sleeve 5 and the housing 1 to support and fix the shaft sleeve 5.

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

[0032] It should be noted that the cover 1 is in the shape of a round sky and a square earth as a whole, and a crossbeam 7 is provided below the tube bundle 2. The drive motor 8 is provided on the crossbeam 7 to drive the fan shaft 6, thereby driving the fan blades 4 to rotate and achieve wind induction.

[0033] A shaft sleeve 5 is sleeved on the outside of the fan shaft 6, and then a plurality of inverted triangle support components 3 are evenly arranged circumferentially between the shaft sleeve 5 and the cover shell 1 to form a stable support for the fan shaft 6, effectively solving the problem of shaking of the fan shaft 6, so that the fan blades 4 do not swing when working, ensuring the safety of the induced draft air cooler, and at the same time effectively protecting the drive motor 8 and extending the service life of the drive motor 8; in addition, the vertical state of the fan shaft 6 is monitored in real time by the monitoring component 9, and an alarm is issued when it is detected that the inclination of the fan shaft 6 reaches the alarm threshold, reminding the staff to carry out maintenance, thereby ensuring the safe, stable and efficient operation of the air cooler.

[0034] See also Figure 1 and Figure 2 In one embodiment of the present invention, the inverted triangle support assembly 3 includes a first connecting member 302 provided on the cover 1, a horizontal support member 301 horizontally provided on the first connecting member 302, and an oblique support member 303 obliquely provided on the first connecting member 302. The ends of the horizontal support member 301 and the oblique support member 303 away from the first connecting member 302 are both connected to the shaft sleeve 5, and the angle between the oblique support member 303 and the shaft sleeve 5 is an acute angle.

[0035] The sleeve 5 is provided with a second connecting piece 14 and a third connecting piece 15 on the sleeve section located above the tube bundle 2. The ends of the horizontal supporting pieces 301 in the multiple groups of the inverted triangular supporting assemblies 3 away from the first connecting piece 302 are all connected to the second connecting piece 14. The ends of the oblique supporting pieces 303 in the multiple groups of the inverted triangular supporting assemblies 3 away from the first connecting piece 302 are all connected to the third connecting piece 15.

[0036] The horizontal support member 301 and the first connecting member 302 and the second connecting member 14 , the oblique support member 303 and the first connecting member 302 and the third connecting member 15 , and the first connecting member 302 and the cover 1 are all connected by bolts.

[0037] In this embodiment, the horizontal support members 301 and the oblique support members 303 are both angle steels. Of course, they can also be made of other materials with equivalent strength to achieve stable support for the shaft sleeve 5. This embodiment is not limited thereto. In addition, in this embodiment, the specific construction steps between the multiple inverted triangle support assemblies 3 and the shaft sleeve 5 are as follows:

[0038] S1: Manufacture the second connecting member 14 and the third connecting member 15 according to the specifications of the shaft sleeve 5, and evenly arrange multiple groups of bolt holes on the second connecting member 14 and the third connecting member 15 in the circumferential direction, the same number as the inverted triangular support components 3 (the number of bolt holes in a group can be 1 or 2, which is not limited here. In addition, this embodiment is described as having 12 groups of inverted triangular support components 3). Weld the manufactured second connecting member 14 and the third connecting member 15 to the shaft sleeve 5;

[0039] S2: Fix the first connecting member 302 to the housing 1 with bolts. According to the distance between the first connecting member 302 and the second connecting member 14 (measured on site), manufacture 12 horizontal supporting members 301 of the same length and specification. Then, connect and assemble the 12 horizontal supporting members 301 in sequence (the ends of the horizontal supporting members 301 are respectively fixed to the first connecting member 302 and the second connecting member 14 with bolts).

[0040] S3: According to the distance between the first connecting member 302 and the third connecting member 15 (on-site measurement), 12 inclined support members 303 of the same length and specification are manufactured, and the 12 inclined support members 303 are connected and assembled in turn (the two ends of the inclined support member 303 are fixed to the first connecting member 302 and the third connecting member 15 by bolts respectively).

[0041] It should be noted that when measuring the distance between the first connecting member 302 and the second connecting member 14 to manufacture the horizontal support member 301 and measuring the distance between the first connecting member 302 and the third connecting member 15 to manufacture the oblique support member 303, it is necessary to ensure the verticality of the sleeve 5 and its concentricity with the upper end opening of the cover shell 1, so as to ensure the circumferential distance between the fan blade 4 and the upper end opening of the cover shell 1 when the fan blade 4 is in operation; after all the horizontal support members 301 and the oblique support members 303 are installed, the horizontal support members 301, the oblique support members 303 and the sleeve 5 are in the shape of an inverted triangle, thereby ensuring stable and high-strength support for the sleeve 5, ensuring the stability of the fan blade 4 during operation, and at the same time protecting the drive motor 8 and extending the service life of the drive motor 8.

[0042] See also Figures 1 to 4 In one embodiment of the present invention, the upper end of the fan shaft 6 extends above the fan blades 4, and the monitoring component 9 includes a laser generator 902 provided above the fan shaft 6 and a receiver 903 provided 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 is perpendicular to the laser sensing area 905, and the fan shaft 6 is provided with a channel 904 for the laser beam to pass through.

[0043] The monitoring component 9 further includes an alarm component (not shown in the figure) for generating an alarm when the monitoring component 9 detects that the inclination of the fan shaft 6 reaches an alarm threshold.

[0044] In this embodiment, under normal circumstances, the laser generator 902 generates a laser beam and passes through the channel 904 to illuminate the laser sensing area 905. When the fan shaft 6 is skewed, the channel 904 is skewed accordingly. When the fan shaft 6 is skewed to a certain extent, the inclination of the channel 904 is too large to meet the requirement of the laser beam passing through, thereby blocking the laser beam, so that the laser sensing area 905 no longer senses the laser beam, that is, it is determined that the alarm threshold is reached (the threshold is determined by the diameter of the channel 904 and is set according to the actual application scenario of the air cooler), and the alarm component activates the alarm to remind the staff to perform maintenance; it should be noted that the photoelectric sensing technology based on which the laser sensing area 905 senses the laser beam, and the corresponding control technology that the alarm component activates when the alarm threshold is reached are both mature and existing, and there are no technical obstacles. They will not be elaborated in this embodiment.

[0045] Furthermore, in this embodiment, the monitoring component 9 also includes a bracket 901, and the laser generator 902 is arranged on the bracket 901; in addition, the alarm component is a buzzer or a warning light, or other devices that can alarm and remind, which is not limited in this embodiment.

[0046] Furthermore, in this embodiment, a transparent blocking piece 13 is provided at the upper end of the channel 904, and the upper side surface of the transparent blocking piece 13 is flush with the upper end surface of the fan shaft 6, and the transparent blocking piece 13 and the upper end of the fan shaft 6 are provided with X-direction distance scale lines 10, Y-direction distance scale lines 11 and angle scale lines 12 (the specific numerical values are not shown in the figure). After the fan shaft 6 is skewed and the alarm is triggered, the laser beam will fall on the upper end of the fan shaft 6. By reading the numerical information of the X-direction distance scale lines 10, Y-direction distance scale lines 11 and angle scale lines 12 of the laser beam landing point, the maintenance personnel can intuitively and quickly understand the skew direction and degree of skew of the fan shaft 6, and thus formulate a maintenance plan; in addition, the upper end of the channel 904 is blocked by the transparent blocking piece 13 to prevent external debris from entering the channel 904 to block the laser beam and affect normal monitoring.

[0047] See also Figure 1 and Figure 5 In one embodiment of the present invention, the induced draft air cooler further includes a cleaning assembly for cleaning the transparent sealing piece 13, the cleaning assembly including an air collecting hopper 1601 provided below the tube bundle 2 and an air guide pipe 1602 provided on the cover shell 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 piece 13.

[0048] In this embodiment, when the air is induced, the dust entrained in the air flow will be deposited and cover the transparent sealing piece 13, which may block the laser beam. Therefore, a cleaning component is provided to clean the transparent sealing piece 13. Specifically, a portion of the introduced air flow will enter the air collecting hopper 1601 after passing through the tube bundle 2, and then be transmitted through the air guide pipe 1602 and ejected toward the transparent sealing piece 13. Since the air guide pipe 1602 is tapered at one end toward the transparent sealing piece 13, it acts as a pressurized airflow, so that the impact force of the discharged air flow is greater, which can effectively blow away the dust adhering to the transparent sealing piece 13, thereby achieving the effect of cleaning it.

[0049] Furthermore, in this embodiment, the air duct 1602 is also provided with heat dissipation fins 1603 on the pipe section outside the cover shell 1. It should be noted that the heat dissipation fins 1603 are partially located inside the air duct 1602. The temperature of the air flow increases after heat exchange with the tube bundle 2. In order to avoid the high temperature of the "return" air flow affecting the heat exchange effect, heat dissipation fins 1603 are provided on the air duct 1602, so that the air flow collected by the air collecting hopper 1601 can dissipate heat and cool down during the flow along the air duct 1602, thereby avoiding affecting the heat exchange between the air flow and the tube bundle 2.

[0050] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An induced draft air cooler capable of preventing a fan shaft from shaking is provided in a housing (1) of the induced draft air cooler, wherein a tube bundle (2), a fan shaft (6) and a drive motor (8) for driving the fan shaft (6) to rotate are provided in the housing (1), wherein the fan shaft (6) passes through the tube bundle (2), and a fan blade (4) is provided at the upper end of the fan shaft (6), and wherein: A shaft sleeve (5) is sleeved on the fan shaft (6), and a plurality of groups of inverted triangle support assemblies (3) are evenly arranged circumferentially between the shaft sleeve (5) and the housing (1) to support and fix the shaft sleeve (5); The induced draft air cooler further comprises a monitoring component (9) for real-time monitoring of the vertical state of the fan shaft (6).

2. The induced draft air cooler capable of preventing fan shaft shaking according to claim 1, characterized in that: The inverted triangle support assembly (3) comprises a first connecting member (302) provided on the housing (1), a horizontal support member (301) provided horizontally on the first connecting member (302), and an oblique support member (303) provided obliquely on the first connecting member (302), wherein the ends of the horizontal support member (301) and the oblique support member (303) away from the first connecting member (302) are both connected to the shaft sleeve (5).

3. The induced draft air cooler capable of preventing fan shaft shaking according to claim 2, characterized in that: The sleeve (5) is provided with a second connecting piece (14) and a third connecting piece (15) on the sleeve section located above the tube bundle (2); the ends of the horizontal supporting pieces (301) in the multiple groups of the inverted triangle supporting assemblies (3) away from the first connecting piece (302) are all connected to the second connecting piece (14); and the ends of the oblique supporting pieces (303) in the multiple groups of the inverted triangle supporting assemblies (3) away from the first connecting piece (302) are all connected to the third connecting piece (15).

4. The induced draft air cooler capable of preventing fan shaft shaking according to claim 3, characterized in that: The horizontal support member (301) and the first connecting member (302) and the second connecting member (14), the oblique support member (303) and the first connecting member (302) and the third connecting member (15), and the first connecting member (302) and the cover shell (1) are all connected by bolts.

5. The induced draft air cooler capable of preventing fan shaft shaking according to claim 2, characterized in that: The included angle between the oblique support member (303) and the shaft sleeve (5) is an acute angle.

6. The induced draft air cooler capable of preventing fan shaft shaking according to claim 1, characterized in that: The upper end of the fan shaft (6) extends above the fan blades (4); the monitoring assembly (9) comprises a laser generator (902) disposed above the fan shaft (6) and a receiving element (903) disposed below the fan shaft (6); the laser generator (902) is used to generate a laser beam; the receiving element (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 vertically aligned; and a channel (904) for the laser beam to pass through is provided in the fan shaft (6); The monitoring component (9) further comprises an alarm component, which is used to generate an alarm when the monitoring component (9) detects that the inclination of the fan shaft (6) reaches an alarm threshold.

7. The induced draft air cooler capable of preventing fan shaft shaking according to claim 6, characterized in that: A transparent blocking piece (13) is provided at the upper end of the channel (904), and the upper side surface of the transparent blocking piece (13) is flush with the upper end surface of the fan shaft (6). X-direction distance scale lines (10), Y-direction distance scale lines (11) and angle scale lines (12) are provided on the transparent blocking piece (13) and the upper end of the fan shaft (6).

8. The induced draft air cooler capable of preventing fan shaft shaking according to claim 7, characterized in that: The induced draft air cooler further comprises a cleaning assembly for cleaning the transparent sealing piece (13), the cleaning assembly comprising an air collecting hopper (1601) arranged below the tube bundle (2) and an air guide pipe (1602) arranged on the cover (1), one end of the air guide pipe (1602) being connected to the exhaust end of the air collecting hopper (1601), and the other end being conical and facing the transparent sealing piece (13).

9. The induced draft air cooler capable of preventing fan shaft shaking according to claim 8, characterized in that: The air guide pipe (1602) is further provided with heat dissipation fins (1603) on the pipe section located outside the housing (1).

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