Circulating system for air inlet cooling of air compressor

Abstract

The utility model provides a circulating system for air inlet cooling of an air compressor, which comprises a frame, a compressor head mounted at the lower position in the frame, an air inlet pipe mounted at the air inlet end of the compressor head, a housing mounted at one end of the air inlet pipe far away from the compressor head, and a detachable side cover mounted on one surface of the frame close to the housing. A plurality of air inlet holes are evenly formed in the area, covered by the housing, of the side cover, a heat exchange pipe is installed in the housing, one end of the heat exchange pipe extends to the outer side of the housing and is connected with a drainage pipe, and the other end of the heat exchange pipe extends to the outer side of the housing and is provided with a connecting pipe. The air compressor cooling device has the advantages that air inlet of an air compressor is cooled, so that the temperature of the air inlet is reduced, energy consumption of an air compressor system is reduced, and the purpose of energy conservation of the system is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a circulating system for air compressor intake cooling belongs to air compressor field. BACKGROUND

[0002] In the production compressed air process, many enterprises only carry out dust removal treatment to the air suction of air compressor, ignore the influence of air suction temperature on air compressor and even the whole system, lead to enterprise compressed air system energy consumption is too high. Especially in summer, the air temperature of air compressor running environment is higher, and the operation energy consumption is high for a long time.

[0003] From ideal gas state equation pV=mRT / M and thermodynamics first law, under the condition of certain pressure, with the increase of temperature, the volume of unit mass air increases, the air compressor gas production reduces, and the exhaust volume reduces. The change of exhaust volume has great influence on the mechanical efficiency of compressor. In the case of certain speed, the compressor has the best operating condition point, with the reduction of exhaust volume, the compressor operation deviates from the best operating condition point, and the compression efficiency reduces. According to air power formula The theoretical power of air compressor is proportional to the intake temperature (absolute temperature), according to experience, when the air suction temperature of air compressor increases by 1 DEG C, the power consumption of 1m3 compressed air increases by 0.295%.

[0004] If the operating condition point of air compressor deviates too much and exceeds the stable working area, mechanical failure is easy to cause due to unstable operation of air compressor, the service life of air compression equipment is shortened, and the equipment maintenance cost is increased. Influenced by air suction temperature, the exhaust temperature rises, the working pressure of subsequent cooling equipment increases, the cooling environment of air compressor system deteriorates, and the lack of cooling easily causes carbon deposition in air compression system, and even explosion accidents are caused. It can be seen that high-temperature air not only increases the operation cost of enterprise, and the safety production harm of enterprise is greater. CONTENT OF UTILITY MODEL

[0005] In view of the deficiency of prior art, the utility model aims at providing a circulating system for air compressor intake cooling to solve the problems in the background art, the utility model cools the air intake of air compressor, thereby reducing the air intake temperature, reducing the energy consumption of air compressor system, and achieving the purpose of system energy saving.

[0006] In order to achieve the above object, the utility model is through the following technical scheme to realize: a kind of for air compressor intake cooling circulation system, including frame, the lower position of the frame is equipped with compressor head, the air inlet end of the compressor head is equipped with air inlet pipe, the end of the air inlet pipe away from compressor head is equipped with cover, the side of the frame close to cover is equipped with detachable side cover, the side of the cover facing side cover is open and cover opening end is connected with side cover fixedly, the area of the side cover covered by cover is evenly provided with multiple air inlet holes, the cover is equipped with heat exchange pipe, the heat exchange pipe one end extends to cover outside and is connected with drain pipe, the heat exchange pipe other end extends to cover outside and is equipped with connecting pipe, the side of the frame away from cover is equipped with freeze dryer, the air outlet end of the compressor head is connected with the air inlet end of freeze dryer by high-pressure hose, the drain port of the freeze dryer is equipped with automatic water drainer, the end of the connecting pipe away from heat exchange pipe is connected with the drain port of automatic water drainer.

[0007] Further, the frame is equipped with motor for driving screw rotation in compressor head, the lower position of the frame is equipped with gas holder for storing compressed air, the air inlet end of the gas holder is connected with the air outlet end of freeze dryer.

[0008] Further, the bottom of the frame is connected with bottom frame fixedly, the compressor head, motor and gas holder are connected with bottom frame fixedly by bolt.

[0009] Further, the bottom frame is equipped with multiple rib plates, and the multiple rib plates are evenly arranged in the bottom frame.

[0010] Further, the upper position of the side of the frame away from side cover is hinged with movable door plate, and the lower position of the side of the frame away from side cover is evenly provided with multiple first heat dissipation holes.

[0011] Further, the two sides of the frame adjacent to side cover are equipped with detachable first door plate and second door plate, and the lower position of one side of the second door plate is evenly provided with multiple second heat dissipation holes.

[0012] The utility model has the advantages that:

[0013] 1, utilize the cooling and dehumidification function of freeze dryer, and the condensed water after dehumidification flows into heat exchange pipe through connecting pipe, and the condensed water in heat exchange pipe exchanges heat with fresh air in cover, so that the temperature of fresh air in cover is reduced, and the fresh air into air compressor is cooled and heat-exchanged, so that the temperature of air compressor is reduced, and the condensed water of freeze dryer is used as heat exchange medium, without increasing the energy consumption of original system, so that the temperature of intake air is reduced, the energy consumption of air compressor system is reduced, and the purpose of system energy saving is achieved.

[0014] 2. Due to the limited capacity of the system's condensate treatment, an automatic drainer is installed between the freeze dryer and the connecting pipe. The automatic drainer is set to drain at a five-minute interval, with each draining session lasting five seconds. This allows the condensate to accumulate to a certain amount before being discharged for heat exchange. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Fig. 1 This is a schematic diagram of the structure of a circulating system for cooling the intake air of an air compressor according to the present invention;

[0017] Fig. 2 This is an assembly diagram of heat exchange tubes, casing and frame in a circulating system for cooling the intake air of an air compressor according to the present invention.

[0018] Fig. 3 This is an assembly diagram of the side cover, bottom frame, and frame of a circulating system for cooling the intake air of an air compressor according to the present invention.

[0019] In the diagram: 1-Frame, 2-Connecting pipe, 3-Cover, 4-Bottom frame, 5-Air tank, 6-Compressor head, 7-Motor, 8-Automatic drain, 9-Moving door panel, 10-Refrigerated dryer, 11-Air inlet pipe, 12-Heat exchange pipe, 13-Fiber rib, 14-High pressure hose, 15-Side cover, 16-Air inlet hole, 17-First door panel, 18-Second heat dissipation hole, 19-Second door panel. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figs. 1-3 This utility model provides a technical solution: a circulation system for cooling the intake air of an air compressor, including a frame 1, a compressor head 6 installed in the lower part of the frame 1, a motor 7 installed in the frame 1 for driving the screw inside the compressor head 6 to rotate, an air tank 5 for storing compressed air installed in the lower part of the frame 1, the air inlet of the air tank 5 being connected to the air outlet of a freeze dryer 10, a bottom frame 4 being fixedly connected to the bottom of the frame 1, the compressor head 6, the motor 7 and the air tank 5 being fixedly connected to the bottom frame 4 by bolts, a plurality of stiffening plates 13 being installed in the bottom frame 4, the plurality of stiffening plates 13 being evenly arranged in the bottom frame 4, and a detachable first door panel 17 and a second door panel 19 being installed on the two sides of the frame 1 adjacent to the side cover 15, a plurality of second heat dissipation holes 18 being evenly opened in the lower part of one side of the second door panel 19.

[0022] SeeFigs. 1-3 The air inlet pipe 11 is installed at the air inlet end of the compressor head 6, and the air inlet pipe 11 is installed with the shell 3 at the end away from the compressor head 6, the frame 1 is installed with the detachable side cover 15 at the side close to the shell 3, the side of the shell 3 facing the side cover 15 is open, and the open end of the shell 3 is fixedly connected with the side cover 15, a plurality of air inlet holes 16 are uniformly arranged in the area of the shell 3 covered by the side cover 15, the heat exchange pipe 12 is installed in the shell 3, one end of the heat exchange pipe 12 extends to the outside of the shell 3 and is connected with the drain pipe, the other end of the heat exchange pipe 12 extends to the outside of the shell 3 and is installed with the connecting pipe 2, the freeze dryer 10 is installed in the frame 1 away from the shell 3, the air outlet end of the compressor head 6 is connected with the air inlet end of the freeze dryer 10 through the high-pressure hose 14, the automatic water drain device 8 is installed at the water outlet of the freeze dryer 10, and the end of the connecting pipe 2 away from the heat exchange pipe 12 is connected with the water outlet of the automatic water drain device 8. By using the cooling and dehumidifying function of the freeze dryer 10, the condensed water after dehumidification flows into the heat exchange pipe 12 through the connecting pipe 2, the condensed water in the heat exchange pipe 12 exchanges heat with the fresh air entering the shell 3, so that the temperature of the fresh air entering the shell 3 is reduced, the cooling and heat exchange treatment of the fresh air entering the air compressor is realized, thereby reducing the air inlet temperature of the air compressor, using the condensed water from the freeze dryer 10 as the heat exchange medium, without increasing the original system energy consumption, thereby reducing the air inlet temperature, reducing the energy consumption of the air compressor system, and achieving the purpose of system energy saving. Since the system condensate treatment capacity is limited, the automatic water drain device 8 is installed between the freeze dryer 10 and the connecting pipe 2, the automatic water drain device 8 is used, the drainage interval is set to five minutes, and the drainage time is five seconds each time, so that the condensed water accumulates to a certain amount and is discharged for heat exchange. The automatic water drain device 8 has a float ball or a capacitive sensor inside for detecting the water level of the accumulated condensed water. When the water level reaches the preset height, the float ball or the capacitive sensor triggers the water drainage action. Once enough water level is detected, the valve in the automatic water drain device 8 will be opened. This valve can be a mechanical float ball valve or an electromagnetic electromagnetic valve. After the valve is opened, the accumulated condensed water is discharged through the water outlet.

[0023] Referring to Figs. 1-3 The movable door plate 9 is hinged at the upper position of the side of the frame 1 away from the side cover 15, a plurality of first heat dissipation holes are uniformly arranged at the lower position of the side of the frame 1 away from the side cover 15, and the movable door plate 9 is opened to facilitate the maintenance of the freeze dryer 10.

[0024] Although the present specification is described in terms of embodiments, each embodiment does not necessarily contain only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A circulation system for air compressor intake cooling comprising a frame (1), characterized in that: The frame (1) is provided with a compressor head (6) mounted at a lower position inside the frame (1), an air inlet pipe (11) is mounted at the air inlet end of the compressor head (6), a cover shell (3) is mounted at the end of the air inlet pipe (11) away from the compressor head (6), a detachable side cover (15) is mounted on the side of the frame (1) close to the cover shell (3), the side of the cover shell (3) facing the side cover (15) is open, and the open end of the cover shell (3) is connected and fixed with the side cover (15), a plurality of air inlet holes (16) are uniformly arranged in the area of the side cover (15) covered by the cover shell (3), a heat exchange pipe (12) is mounted inside the cover shell (3), one end of the heat exchange pipe (12) extends to the outside of the cover shell (3) and is connected with a drain pipe, the other end of the heat exchange pipe (12) extends to the outside of the cover shell (3) and is provided with a connecting pipe (2), a freeze dryer (10) is mounted on the side of the frame (1) away from the cover shell (3), the air outlet end of the compressor head (6) is connected with the air inlet end of the freeze dryer (10) through a high-pressure hose (14), an automatic water drain device (8) is mounted at the water outlet of the freeze dryer (10), and the end of the connecting pipe (2) away from the heat exchange pipe (12) is connected with the water outlet of the automatic water drain device (8).

2. A circulation system for air compressor intake cooling according to claim 1, characterized in that: A motor (7) for driving the rotation of the screw in the compressor head (6) is mounted inside the frame (1), and a gas storage tank (5) for storing compressed air is mounted at a lower position inside the frame (1).

3. A circulation system for air compressor inlet cooling according to claim 2, characterized in that: The bottom frame (4) is connected and fixed to the bottom of the frame (1), and the compressor head (6), the motor (7) and the gas storage tank (5) are connected and fixed to the bottom frame (4) by bolts.

4. A circulation system for air compressor intake cooling according to claim 3, characterized in that: A plurality of rib plates (13) are mounted in the bottom frame (4), and the plurality of rib plates (13) are uniformly arranged in the bottom frame (4).

5. A circulation system for air compressor intake cooling according to claim 1, characterized in that: An activity door plate (9) is hinged to the upper position of the side of the frame (1) away from the side cover (15), and a plurality of first heat dissipation holes are uniformly arranged at the lower position of the side of the frame (1) away from the side cover (15).

6. A circulation system for air compressor intake cooling according to claim 1, characterized in that: The first door plate (17) and the second door plate (19) are mounted on the two sides of the frame (1) adjacent to the side cover (15), a plurality of second heat dissipation holes (18) are uniformly arranged at the lower position of one side of the second door plate (19).

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