Efficient heat dissipation system for air blower room

Abstract

The utility model relates to the technical field of sewage treatment, and discloses an efficient radiating system of a blower room, which comprises axial flow fans, a cooling grid and a cooling system, the axial flow fans are arranged on the side wall of the blower room, part of the axial flow fans are used as mechanical air inlet channels, and the other part of the axial flow fans are used as mechanical air exhaust channels. The cooling grid is installed at an air suction opening of an axial flow fan used as an air inlet channel and a fan air inlet pipe opening of an air blower located at the position of the air inlet gallery, the cooling system is used for preparing cold air, the cooling system communicates with the cooling grid through a pipeline, and the cold air is conveyed to the cooling grid through the pipeline. The room temperature of an air blower room and the shaft temperature of the air blower are reduced through heat exchange between the cooling grid and inlet air of the axial flow fan and inlet air of the air blower. The cooling system is matched with the cooling grating for air inlet heat exchange, so that the dual purposes of reducing the room temperature and the shaft temperature of the air blower are achieved, the problem of high-temperature alarm of the shaft temperature of the air blower is solved, and the operation efficiency of the air blower is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving, cooling and heat dissipation of a blower room in sewage treatment, and in particular to a high-efficiency heat dissipation system for a blower room. Background Art

[0002] As one of the core equipment of sewage treatment plants, blowers have multiple functions of oxygen supply, aeration and water mixing, and are essential equipment for the normal operation of sewage treatment plants. Whether the blowers can operate normally directly determines whether the effluent of the sewage treatment plant meets the standards, and the indoor temperature of the blower room directly affects the operating efficiency of the blower room.

[0003] At present, most blower rooms use mechanical ventilation to lower the room temperature, and the ventilation source mainly comes from outdoor air. For example, the patent corresponding to patent authorization announcement number CN211011819U discloses a blower room cooling device, which controls the start and stop of the axial flow fan through a temperature sensor to solve the problem that the hot air in the blower room cannot be quickly discharged to the outside, thereby causing the blower high temperature alarm. The patent corresponding to patent authorization announcement number CN114934916A discloses a cooling system installed in the blower room, which solves the problem of excessively high room temperature in the blower room during high temperatures in summer through the dual measures of mechanical air intake and external cooling water heat exchange.

[0004] However, with global warming, the summer temperature rises year by year, causing the room temperature of the blower room to gradually rise. Since the temperature difference between the indoor and outdoor of the blower room is not large, even if the axial flow fans are installed in larger and denser numbers, the blower shaft temperature is still at a high value. During the highest temperature in summer, the blower shaft temperature often exceeds the alarm value and causes shutdown, which has a great adverse effect on the effluent quality of the sewage treatment plant. Moreover, the method of cooling the blower by adding cooling water heat exchange is only suitable for conditions with high summer temperatures, sufficient cooling water supply, large indoor space, and a small number of fans. When the temperature is high in summer, the number of blowers is large and the spacing between them is small, a large amount of cooling water is required, and clean water sources need to be replaced regularly. The maintenance cost of the water cooling system is high, and the system needs to be shut down for maintenance, which has a significant impact on continuous production. In addition, when the blower used in the blower room is a high-pressure blower, a water cooling system is used in the high-pressure blower. The installation is relatively complicated, and more auxiliary equipment is required. When the cooling water leaks due to poor sealing or disrepair, safety accidents such as electric leakage are very likely to occur. In particular, high-voltage motors (above 10kv) will electrolyze water into hydrogen and oxygen when they come into contact with water. When hydrogen encounters an electric arc, serious safety accidents such as combustion or explosion will occur. Utility Model Content

[0005] The utility model aims to provide a high-efficiency heat dissipation system for a blower room to solve the technical problems described in the background technology.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] A high-efficiency heat dissipation system for a blower room comprises an axial flow fan, a cooling grille and a cooling system, wherein the axial flow fan is installed on the side wall of the blower room, a part of the axial flow fan is used as a mechanical air inlet channel to suck outdoor air into the blower room, and another part of the axial flow fan is used as a mechanical exhaust channel to exhaust the air inside the blower room to the outside, the cooling grille is installed at the air suction port of the axial flow fan used as the air inlet channel, and at the fan air inlet pipe port of the blower located at the air inlet corridor, the cooling system is used to prepare cold air, the cooling system is connected to the cooling grille through a pipeline, and the prepared cold air is transported to the cooling grille through the pipeline, and the room temperature of the blower room and the blower shaft temperature are reduced by heat exchange between the cooling grille and the air inlet of the axial flow fan and the air inlet of the blower.

[0008] Preferably, it also includes solar photovoltaic panels and an energy storage control cabinet. The solar photovoltaic panels are installed on the roof of the blower room, the roof of the air inlet corridor and the top of the cooling grille at the air suction port of the axial fan. The energy storage control cabinet is arranged in the power distribution room. The energy storage control cabinet is connected to the solar photovoltaic panels and the cooling system through cables. It is used to store the electric energy generated by the solar photovoltaic panels, provide electric energy for the cooling system and control the start and stop of the cooling system.

[0009] Preferably, a temperature transmitter is provided in the blower room, and the temperature transmitter is connected to the control unit of the energy storage control cabinet. The temperature transmitter transmits the collected temperature signal to the control unit of the energy storage control cabinet, and the control unit of the energy storage control cabinet controls the start and stop of the cooling system according to the received temperature signal.

[0010] Preferably, the axial flow fans are installed at the top of the side walls of the blower room, and an air duct is installed at the air outlet of the axial flow fan serving as a mechanical air inlet channel. The air outlet of the air duct is located at the bottom of the indoor space of the blower room, and an air inlet grille is installed at the air outlet of the air duct.

[0011] Preferably, the cooling grille comprises two grille main pipes arranged in parallel, each of which is open at one end and closed at the other end, the open end of one grille main pipe is used as a cold air inlet and connected to the cooling system through a pipe, and the open end of the other grille main pipe is used as a cold air outlet and connected to the cooling system through a pipe, and the opening directions of the two grille main pipes are opposite, and a plurality of grille branch pipes are arranged at intervals between the two grille main pipes, the grille branch pipes are C-shaped, and the tube lumens of the grille branch pipes are connected to the tube lumens of the two grille main pipes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model uses a cooling system to cooperate with a cooling grille to exchange heat with incoming air, and solves the problem of blower shaft temperature overheating from both internal and external factors. The internal factor is to reduce the blower inlet temperature to ensure low-temperature air intake of the fan, supply air volume and cool the fan connecting shaft at the same time. The external factor is to cool the mechanical ventilation air intake and exchange it with indoor air to reduce the room temperature, thereby achieving the dual purpose of reducing the room temperature and the blower shaft temperature, avoiding the problem of high-temperature alarm of the blower shaft temperature, and can significantly improve the operation efficiency of the blower;

[0014] 2. The utility model reduces the air inlet temperature of the blower by setting the cooling grille, ensures the low-temperature air inlet of the blower, and realizes the cooling of the fan connecting shaft while supplying air volume. It does not need to introduce complex auxiliary equipment, and there is no risk of explosion caused by water leakage. Moreover, the refrigerant in the cooling grille exchanges heat with the reclaimed water supplied by the factory area, so that the reclaimed water absorbs heat and takes the heat out to the external reclaimed water pipe through the tap water pipe, without stopping the machine for maintenance;

[0015] 3. The utility model can significantly reduce power consumption and effectively reduce the operating cost of the sewage treatment plant. As one of the core equipment of the sewage treatment plant, the blower accounts for more than 30% of the total power consumption of the sewage treatment plant. The operating efficiency of the blower directly affects the operating cost of the sewage treatment plant. The lower operating temperature of the blower motor in summer can effectively improve the operating efficiency of the blower and optimize power consumption.

[0016] 4. The utility model can save energy consumption for air exchange in summer. The cooling system adopts solar photovoltaic panels as the power source, which effectively utilizes solar energy without the need for additional electricity.

[0017] 5. The utility model can further reduce the air exchange temperature. The system design installs photovoltaic panels on the roof of the blower room, the top of the wind corridor and the top of the air inlet of the axial flow fan, which plays the dual functions of converting solar energy into electrical energy and shielding sunlight. While converting electrical energy, it avoids direct sunlight on the blower room, wind corridor and axial flow fan, further reducing the room temperature of the blower room;

[0018] 6. The energy of the cooling system of the utility model can achieve self-sufficiency. The system is mainly used in hot summer weather. When the daytime temperature in summer reaches a high value, the temperature transmitter sends a signal to start the cooling system. At this time, the sunshine is also the strongest, and the power generation efficiency is high. The electric energy stored in other periods can fully meet the power demand of the cooling system;

[0019] 7. The utility model can be automatically operated and precisely regulated, reducing manual operation. At the same time, the system has a simple structure, is easy to use, has a high utilization rate, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:

[0021] Figure 1 It is a schematic diagram of the utility model;

[0022] Figure 2 This is a structural schematic diagram of the blower room involved in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the cooling grille involved in the utility model.

[0024] Figure numerals: 1. Blower room; 2. Axial fan; 3. Air guide duct; 4. Air inlet grille; 5. Cooling grille; 6. Blower; 7. Fan air inlet duct; 8. Air inlet corridor; 9. Temperature transmitter; 10. Cooling system; 11. Cold air inlet duct; 12. Cold air return duct; 13. Grey water pipe; 14. Energy storage control cabinet; 15. Solar photovoltaic panel; 16. Cable; 17. Grille main pipe; 18. Grille branch pipe; 19. Cold air inlet; 20. Cold air outlet. DETAILED DESCRIPTION

[0025] In the following, an embodiment of a high-efficiency heat dissipation system for a blower room of the utility model will be described with reference to the accompanying drawings. The embodiments recorded herein are specific embodiments of the utility model, which are used to illustrate the concept of the utility model, are explanatory and exemplary, and should not be interpreted as limiting the implementation methods of the utility model and the scope of the utility model. In addition to the embodiments recorded herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application, including technical solutions that adopt any obvious replacements and modifications to the embodiments recorded herein.

[0026] In the description of the present invention, it should be noted that the terms "front", "rear", "left", "right", "top", "bottom", "up", "down", "inside", "outside", "horizontal", "longitudinal", "vertical", "oblique" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the utility model and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structure of various components of the embodiments of the utility model, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The embodiments are only used to explain the present invention and are not intended to limit the scope of the present invention. Figure 1-3 , the preferred embodiments of the utility model are further described in detail:

[0029] like Figure 1 As shown, the utility model preferably adopts an efficient heat dissipation system for a blower room, comprising an axial flow fan 2, a cooling grille 5 and a cooling system 10, wherein the axial flow fan 2 is installed on the side wall of the blower room 1, part of the axial flow fan 2 is used as a mechanical air inlet channel to suck outdoor air into the blower room 1, and the other part of the axial flow fan 2 is used as a mechanical exhaust channel to exhaust the internal air of the blower room 1 to the outside, the cooling grille 5 is installed at the air suction port of the axial flow fan 2 used as the air inlet channel, and at the pipe mouth of the fan air inlet pipe 7 of the blower 6 located at the air inlet gallery 8, the cooling system 10 is used to prepare cold air, the cooling system 10 is connected with the cooling grille 5 through a pipeline, and the prepared cold air is transported to the cooling grille 5 through the pipeline, and the heat exchange between the cooling grille 5 and the air inlet of the axial flow fan 2 and the air inlet of the blower 6 is reduced, the shaft temperature of the axial flow fan 2, the room temperature of the blower room 1 and the shaft temperature of the blower 6 are reduced, and the operation efficiency of the axial flow fan 2 and the blower 6 can be significantly improved;

[0030] like Figure 2 As shown, the axial flow fans 2 are all installed at the top of the side wall of the blower room 1, and an air duct 3 is installed at the air outlet of the axial flow fan 2 as a mechanical air inlet channel, the air outlet of the air duct 3 is located at the bottom of the indoor space of the blower room 1, and an air inlet grille 4 is installed at the air outlet of the air duct 3. The air duct 3 is set to avoid the problem of poor indoor air circulation caused by short circuit between the mechanical air inlet channel and the mechanical exhaust channel. The bottom of the air duct 3 is preferably set as a horizontal air outlet, so that the cold air blown out can more effectively realize the indoor gas circulation, and achieve the purpose of cooling the blower 6;

[0031] like Figure 3As shown, the cooling grille 5 includes two grille main pipes 17 arranged in parallel, both of which are open at one end and closed at the other end. The open end of one grille main pipe 17 is connected to the cooling system 10 through a pipeline as a cold air inlet 19, and the open end of the other grille main pipe 17 is connected to the cooling system 10 through a pipeline as a cold air outlet 20. A plurality of grille branch pipes 18 are arranged between the two grille main pipes 17 at intervals. The grille branch pipes 18 are C-shaped, and the tube cavities of the grille branch pipes 18 are interconnected with the tube cavities of the two grille main pipes 17. It should be noted that the opening directions of the two grille main pipes 17 are opposite (that is, the cold air inlet 19 and the cold air outlet 20 need to be arranged at both ends of the cooling grille 5) to ensure that the cold air can pass through and fill all the grille branch pipes 18 to avoid the problem of air path short circuit;

[0032] The cooling system 10 is connected to the cold air inlet 19 of each cooling grille 5 through the cold air inlet pipe 11, and is connected to the cold air outlet 20 of each cooling grille 5 through the cold air return pipe 12. The cooling system 10 is a purchased finished water-cooled chiller. Its operating mechanism is to use the evaporator in the cooling system 10 to make the air in the cold air return pipe 12 and the refrigerant exchange heat to achieve the purpose of air cooling. The exchanged cold air enters the cold air inlet pipe 11 and is transported to each cooling grille 5. After the refrigerant absorbs the heat load of the air in the cold air return pipe 12 to cool the air and generate cold air, it enters the condenser under the drive of the compressor, and the refrigerant and the reclaimed water supplied by the factory area exchange heat in the condenser. After the reclaimed water absorbs the heat, it takes the heat out through the reclaimed water pipe 13;

[0033] In order to avoid unnecessary energy consumption and reduce costs, this system is also equipped with solar photovoltaic panels 15 and energy storage control cabinets 14. The solar photovoltaic panels 15 are installed on the roof of the blower room 1, the roof of the air inlet corridor 8 and the top of the cooling grille 5 at the air intake of the axial fan 2. The energy storage control cabinet 14 is a purchased finished chiller energy storage control cabinet. The energy storage control cabinet 14 is arranged in the power distribution room. The energy storage control cabinet 14 is connected to the solar photovoltaic panels 15 and the cooling system 10 through cables 16. It is used to store the electric energy generated by the solar photovoltaic panels 15, provide electric energy for the cooling system 10 and control the start and stop of the cooling system 10. In order to reduce the influence of human factors and improve the automation level of the entire system, a temperature transmitter 9 is also arranged in the blower room 1. The temperature transmitter 9 is connected to the The control unit of the energy storage control cabinet 14 is connected, and the temperature transmitter 9 transmits the collected temperature signal to the control unit of the energy storage control cabinet 14. The control unit of the energy storage control cabinet 14 controls the start and stop of the cooling system 10 according to the received temperature signal. In actual use, the temperature transmitter 9 can be selected in wireless or wired form according to the specific construction conditions. This application does not impose any restrictions on this. When the temperature transmitter 9 installed in the blower room 1 detects that the indoor temperature reaches the set value, the control unit of the energy storage control cabinet 14 sends a signal to start the cooling system 10, and the prepared cold air is respectively delivered to the cooling grille 5 at the air intake of the axial flow fan 2 and the air inlet duct 7 of the blower 6, and heat is exchanged with the air intake of the axial flow fan 2 and the air intake of the blower 6 to reduce the indoor air exchange temperature and the air inlet temperature of the blower 6.

[0034] The utility model mainly prepares outdoor air into cold air through a cooling system 10, and delivers the cold air to a cooling grille 5 installed at the air inlet of an axial flow fan 2 and a cooling grille 5 installed at the pipe opening of a fan air inlet pipe 7 of a blower 6 through a cold air inlet pipe 11, and the cold air after heat exchange flows back to the cooling system 10 through a cold air return pipe 12, specifically including the following two cooling routes:

[0035] Cooling route 1: The axial flow fan 2 sucks air through the cooling grille 5 first, and the sucked air exchanges heat with the cold air in the cooling grille 5 before entering the blower room 1, effectively reducing the indoor temperature through mechanical air exchange;

[0036] Cooling route two: the fan air inlet pipe 7 of the blower 6 draws air from the air inlet gallery 8. The inhaled air exchanges heat with the cold air in the cooling grille 4 and then enters the blower 6. While supplying the required air to the blower 6, it also cools the connecting shaft of the blower 6, thereby reducing the shaft temperature of the blower 6 and effectively improving the operating efficiency of the blower 6.

[0037] The cooling air volume calculation formula for the entire system is as follows:

[0038] V=V 2 +V 4 =[V1 (t 2 -t 1 )+V 3 (t 3 -t 4 )a] / (t 5 -t 6 ),in,

[0039] V-cooling air supply volume, m 3 / h;

[0040] V 1 -Axial flow fan air volume, m 3 / h;

[0041] V 2 -Axial flow fan cooling air volume, m 3 / h;

[0042] V 3 - Blower air volume, m 3 / h;

[0043] V 4 - Required air volume for cooling at the blower inlet, m 3 / h;

[0044] t 1 - Indoor target temperature, °C;

[0045] t 2 -Outdoor air temperature, °C;

[0046] t 3 -Blower shaft temperature, °C;

[0047] t 4 - Target blower shaft temperature, °C;

[0048] t 5 -Cooling air inlet temperature, °C;

[0049] t 6 - Cooling air return temperature, °C;

[0050] a-blower shaft temperature reduction coefficient, the blower shaft temperature reduction coefficient a is determined according to parameters such as the type, power, shaft temperature setting value, and heat dissipation efficiency of the blower 6.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency heat dissipation system for a blower room, characterized by: The invention comprises an axial flow fan (2), a cooling grille (5) and a cooling system (10), wherein the axial flow fan (2) is installed on a side wall of a blower room (1), part of the axial flow fan (2) is used as a mechanical air inlet channel to suck outdoor air into the blower room (1), and the other part of the axial flow fan (2) is used as a mechanical air exhaust channel to exhaust the air inside the blower room (1) to the outside, the cooling grille (5) is installed at the air inlet of the axial flow fan (2) used as the air inlet channel, and at the pipe opening of the fan air inlet pipe (7) of the blower (6) located at the air inlet gallery (8), and the cooling system (10) is used to prepare cold air, and the cooling system (10) is connected to the cooling grille (5) through a pipeline, and the prepared cold air is transported to the cooling grille (5) through the pipeline, and the room temperature of the blower room (1) and the shaft temperature of the blower (6) are reduced by heat exchange between the cooling grille (5) and the air inlet of the axial flow fan (2) and the air inlet of the blower (6).

2. The high-efficiency heat dissipation system for a blower room according to claim 1, characterized in that: It also includes a solar photovoltaic panel (15) and an energy storage control cabinet (14), wherein the solar photovoltaic panel (15) is installed on the roof of the blower room (1), the roof of the air inlet corridor (8) and the top of the cooling grille (5) at the air intake of the axial flow fan (2), and the energy storage control cabinet (14) is arranged in the power distribution room. The energy storage control cabinet (14) is connected to the solar photovoltaic panel (15) and the cooling system (10) through a cable (16) and is used to store the electric energy generated by the solar photovoltaic panel (15), provide electric energy for the cooling system (10) and control the start and stop of the cooling system (10).

3. The high-efficiency heat dissipation system for a blower room according to claim 2, characterized in that: A temperature transmitter (9) is provided in the blower room (1), and the temperature transmitter (9) is connected to a control unit of an energy storage control cabinet (14). The temperature transmitter (9) transmits a collected temperature signal to the control unit of the energy storage control cabinet (14), and the control unit of the energy storage control cabinet (14) controls the start and stop of the cooling system (10) according to the received temperature signal.

4. The high-efficiency heat dissipation system for a blower room according to claim 1, characterized in that: The axial flow fans (2) are all installed at the top of the side wall of the blower room (1), and an air duct (3) is installed at the air outlet of the axial flow fans (2) serving as a mechanical air inlet channel, the air outlet of the air duct (3) is located at the bottom of the indoor space of the blower room (1), and an air inlet grille (4) is installed at the air outlet of the air duct (3).

5. The high-efficiency heat dissipation system for a blower room according to claim 1, characterized in that: The cooling grille (5) comprises two grille main pipes (17) arranged in parallel, each of the two grille main pipes (17) being open at one end and closed at the other end, the open end of one of the grille main pipes (17) being used as a cold air inlet (19) and connected to the cooling system (10) through a pipeline, and the open end of the other grille main pipe (17) being used as a cold air outlet (20) and connected to the cooling system (10) through a pipeline, and the opening directions of the two grille main pipes (17) are opposite, and a plurality of grille branch pipes (18) are arranged at intervals between the two grille main pipes (17), the grille branch pipes (18) being C-shaped, and the tube lumens of the grille branch pipes (18) being connected to the tube lumens of the two grille main pipes (17).

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