Automatic drainage device for interstage cooler of air compressor

Abstract

The utility model relates to the technical field of air compressors, in particular to an automatic drainage device for an interstage cooler of an air compressor, which comprises the interstage cooler of the air compressor, a compressed air inlet pipe and a compressed air outlet pipe are arranged at the top of the interstage cooler of the air compressor, and a circulating water inlet pipe and a circulating water outlet pipe are arranged at the side end of the interstage cooler of the air compressor. A drainage port is arranged at the bottom of the air compressor interstage cooler, the automatic drainage device further comprises a drainer and a water storage tank which are arranged on one side of the air compressor interstage cooler, a water inlet of the drainer is connected with the drainage port through a water inlet pipe, a water outlet of the drainer is connected with the water storage tank through a water outlet pipe, and a drainage pipe is arranged on the water storage tank. The drain pipe is connected with a water pump. According to the automatic drainage device for the interstage cooler of the air compressor, condensate water carried by compressed air can be drained through the drainage port, the compressed air cannot be drained, and loss of the compressed air is effectively prevented; meanwhile, the condensate water is stored by the water storage tank.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, and particularly relates to an automatic drainage device for an inter-stage cooler of an air compressor. Background Art

[0002] The air compressor is the most important part in the air separation unit. During the multi-stage compression operation of the air by the compressor, a large amount of heat will be generated. At this time, the inter-stage cooler needs to transfer a large amount of heat out through heat exchange with the circulating water, effectively reducing the gas temperature in time to ensure the normal operation of the air compressor. In spring and autumn seasons and rainy and snowy weather, due to the high air humidity, after the air is compressed by multiple stages of the compressor and then cooled by the inter-stage cooler, a large amount of condensed water will appear during the cooling process. At this time, a large amount of condensed water will accumulate inside the inter-stage cooler. If it is not drained in time, it will be brought into the rotor of the air compressor. After long-term operation, scale will form on the rotor, affecting the operation of the rotor, increasing the shaft vibration, and in severe cases, the machine will directly stop.

[0003] At this time, it is necessary to regularly drain the sewage of the inter-stage cooler. When encountering rainy and snowy weather or a large amount of condensed water, the sewage discharge valve needs to be kept open all the time. However, at the same time of draining the sewage, a large amount of compressed air will also be discharged immediately, which causes waste of compressed air and also makes the ground wet for a long time, easily forming moss and posing a safety hazard to the inspection personnel. Therefore, there is an urgent need for an automatic drainage device for an inter-stage cooler of an air compressor to solve the above problems. Summary of the Utility Model

[0004] In order to solve the technical problem that when the existing inter-stage cooler discharges sewage, the sewage discharge valve needs to be kept open all the time, resulting in a large loss of compressed air, the utility model provides an automatic drainage device for an inter-stage cooler of an air compressor. The condensed water carried by the compressed air can be discharged through the drainage port, while the compressed air cannot be discharged, effectively preventing the loss of compressed air; at the same time, the water storage tank stores the condensed water.

[0005] The utility model provides an automatic drainage device for an inter-stage cooler of an air compressor, which includes an inter-stage cooler of an air compressor. A compressed air inlet pipe and a compressed air outlet pipe are arranged on the top of the inter-stage cooler of the air compressor. A circulating water inlet pipe and a circulating water outlet pipe are arranged on the side end of the inter-stage cooler of the air compressor. A drainage port is arranged at the bottom of the inter-stage cooler of the air compressor. The automatic drainage device further includes a drainer and a water storage tank arranged on one side of the inter-stage cooler of the air compressor. The water inlet of the drainer is connected to the drainage port through a water inlet pipe, the water outlet of the drainer is connected to the water storage tank through a water outlet pipe, a drain pipe is arranged on the water storage tank, and the drain pipe is connected to a water pump. The external compressed air and cooling water complete heat exchange in the inter-stage cooler of the air compressor. After heat exchange, the drainer is started, and the condensed water carried by the compressed air can be discharged through the drainage port, while the compressed air cannot be discharged.

[0006] Further, the automatic drainage device further includes a protective plate. The size of the protective plate is larger than the size of the notch of the water storage tank. The protective plate is rotatably arranged on the water storage tank through a hinge, and the protective plate covers the notch of the water storage tank. A visual window is arranged on the protective plate. The protective plate covers the notch of the water storage tank, and the protective plate performs dust prevention treatment on the condensed water in the water storage tank to prevent the condensed water from being polluted. Through the visual window, people can conveniently observe the situation of the condensed water in the water storage tank.

[0007] Further, a ladder is arranged on the side wall of the water storage tank. The bottom of the ladder is fixedly connected to the bottom wall of the water storage tank. A first notch is arranged on the protective plate, and the top of the ladder passes through the first notch to the outside of the water storage tank. After long-term use, there may be attachments on the inner wall of the water storage tank. To avoid affecting the condensed water, the water pump can pump out all the condensed water in the water storage tank, and people can enter the water storage tank through the ladder to clean the water storage tank regularly.

[0008] Further, a water level gauge is arranged on the side wall of the water storage tank. A second notch is arranged on the protective plate, and the bottom of the water level gauge passes through the second notch to the inside of the water storage tank. The water level gauge is used to measure the water level of the condensed water in the water storage tank, which further facilitates people to understand the situation of the condensed water in the water storage tank.

[0009] Further, external threads are arranged at both ends of the water inlet pipe, and internal threads matching the external threads are arranged on the inner walls of the water inlet and the drain outlet. The two ends of the water inlet pipe are respectively threadedly connected to the water inlet and the drain outlet. The water inlet pipe is detachable and can be regularly maintained.

[0010] Further, a valve is arranged on the drain pipe. When the valve on the drain pipe is opened, the discharged condensed water can enter the water storage tank.

[0011] Further, the air compressor intercooler includes a shell and a partition plate arranged inside the shell. The partition plate divides the inside of the shell into a first area and a second area. The compressed air inlet pipe and the compressed air outlet pipe are arranged at the top of the shell, and the drain outlet is arranged at the bottom of the shell. The compressed air inlet pipe, the compressed air outlet pipe and the drain outlet are all communicated with the first area. The circulating water inlet pipe and the circulating water outlet pipe are arranged at the side end of the shell and are communicated with the second area. External compressed air enters the first area through the compressed air inlet pipe, and external cooling water enters the second area through the circulating water inlet pipe. The cooling water and the compressed air exchange heat through the partition plate. After the heat exchange is completed, the compressed air is discharged through the compressed air outlet pipe, and the cooling water is discharged through the circulating water outlet pipe. When exchanging heat, the condensed water carried by the compressed air is discharged through the drain outlet.

[0012] Compared with the prior art, the utility model has the following technical effects:

[0013] External compressed air and cooling water complete heat exchange in the inter-stage cooler of the air compressor. After heat exchange, the drainer starts, and the condensed water carried by the compressed air can be discharged through the drain port, while the compressed air cannot be discharged, effectively preventing the loss of compressed air. At the same time, the discharged condensed water can enter the water storage tank, and the water storage tank stores the condensed water. One is to avoid the direct discharge of condensed water onto the working ground to form moss, which poses a safety hazard to the inspection personnel. The other is that the condensed water stored in the water storage tank can be used for other equipment. When the water storage tank is full of condensed water or other equipment has a demand for use, the condensed water in the water storage tank is pumped out by the water pump, and the condensed water is transported to other equipment through the drain pipe. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of an automatic drainage device for the inter-stage cooler of an air compressor of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the water storage tank of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the protective plate of the present utility model;

[0017] Figure 4 is a schematic internal structural diagram of the inter-stage cooler of the air compressor of the present utility model;

[0018] The reference numerals in the drawings are:

[0019] 1. Inter-stage cooler of the air compressor; 11. Compressed air inlet pipe; 12. Compressed air outlet pipe; 13. Circulating inlet water pipe; 14. Circulating outlet water pipe; 15. Partition board;

[0020] 2. Drainer; 21. Inlet water pipe; 22. Outlet water pipe;

[0021] 3. Water storage tank; 31. Drain pipe; 32. Water pump;

[0022] 4. Protective plate; 41. Visual window;

[0023] 5. Ladder; 6. Water level gauge. Detailed Embodiment

[0024] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0025] As Figures 1 to 4As shown in the figure, an automatic drainage device for an inter-stage cooler of an air compressor includes an inter-stage cooler 1 of an air compressor. A compressed air inlet pipe 11 and a compressed air outlet pipe 12 are provided on the top of the inter-stage cooler 1 of the air compressor. A circulating water inlet pipe 13 and a circulating water outlet pipe 14 are provided on the side end of the inter-stage cooler 1 of the air compressor. A drainage port is provided at the bottom of the inter-stage cooler 1 of the air compressor. The automatic drainage device further includes a drainer 2 and a water storage tank 3 provided on one side of the inter-stage cooler 1 of the air compressor. The water inlet of the drainer 2 is connected to the drainage port through a water inlet pipe 21, and the water outlet of the drainer 2 is connected to the water storage tank 3 through a water outlet pipe 22. A drain pipe 31 is provided on the water storage tank 3, and the drain pipe 31 is connected to a water pump 32. Among them, the drainer 2 is a pneumatic non-destructive valve. The inter-stage cooler 1 of the air compressor, the drainer 2, the water storage tank 3, and the water pump 32 are generally arranged on the working ground. The inter-stage cooler 1 of the air compressor, the drainer 2, and the water pump 32 are located above the working ground, and the water storage tank 3 is located below the working ground. Of course, the water inlet pipe 21, the water outlet pipe 22, and the drain pipe 31 are also installed on the working ground.

[0026] External compressed air and cooling water complete heat exchange in the inter-stage cooler 1 of the air compressor. After heat exchange, the drainer 2 starts, and the condensed water carried by the compressed air can be discharged through the drainage port, while the compressed air cannot be discharged, effectively preventing the loss of compressed air. At the same time, the discharged condensed water can enter the water storage tank 3, and the water storage tank 3 stores the condensed water. One is to avoid the condensed water being directly discharged onto the working ground to form moss, which poses a safety hazard to the inspection personnel. The other is that the condensed water stored in the water storage tank 3 can be used for other equipment. When the water storage tank 3 is full of condensed water or other equipment has a use requirement, the condensed water in the water storage tank 3 is pumped out by the water pump 32, and the condensed water is transported to other equipment through the drain pipe 31.

[0027] In the automatic drainage device of this embodiment, the condensed water carried by the compressed air can be discharged through the drainage port, while the compressed air cannot be discharged, effectively preventing the loss of compressed air. At the same time, the water storage tank 3 can store condensed water, avoiding the condensed water being directly discharged onto the working ground to form moss, which poses a safety hazard to the inspection personnel, and can also be used for other equipment.

[0028] As an implementable manner, the automatic drainage device further includes a protective plate 4. The size of the protective plate 4 is larger than the size of the notch of the water storage tank 3. The protective plate 4 is rotatably arranged on the water storage tank 3 through a hinge, and the protective plate 4 covers the notch of the water storage tank 3. A visible window 41 is provided on the protective plate 4. The protective plate 4 covers the notch of the water storage tank 3, and the protective plate 4 performs dust-proof treatment on the condensed water in the water storage tank 3 to avoid the condensed water being polluted. Through the visible window 41, people can conveniently observe the situation of the condensed water in the water storage tank 3.

[0029] As an implementable mode, a ladder 5 is provided on the side wall of the water storage tank 3. The bottom of the ladder 5 is fixedly connected to the bottom wall of the water storage tank 3. A first notch is provided on the protective plate 4, and the top of the ladder 5 passes through the first notch to the outside of the water storage tank 3. After long-term use, there may be attachments on the inner wall of the water storage tank 3. To avoid affecting the condensed water, the water pump 32 can pump out all the condensed water in the water storage tank 3, and workers can enter the water storage tank 3 through the ladder 5 to regularly clean the water storage tank 3.

[0030] As an implementable mode, a water level gauge 6 is provided on the side wall of the water storage tank 3. A second notch is provided on the protective plate 4, and the bottom of the water level gauge 6 passes through the second notch to the inside of the water storage tank 3. The water level gauge 6 is used to measure the water level of the condensed water in the water storage tank 3, which further facilitates people to understand the situation of the condensed water in the water storage tank 3.

[0031] As an implementable mode, external threads are provided at both ends of the water inlet pipe 21, and internal threads matching the external threads are provided on the inner walls of the water inlet and the drain outlet. The two ends of the water inlet pipe 21 are respectively threadedly connected to the water inlet and the drain outlet. The water inlet pipe 21 is detachable and can be regularly maintained. When the amount of condensed water is very small, the water inlet pipe 21 can be removed, and the condensed water can be directly discharged through the drain outlet without using the automatic drainage device.

[0032] Of course, the water outlet pipe 22 is also detachable. External threads are provided at both ends of the water outlet pipe 22. A water storage port is provided on the water storage tank 3, and internal threads matching the external threads are provided on the inner walls of the water outlet and the water storage port. The two ends of the water outlet pipe 22 are respectively threadedly connected to the water outlet and the water storage port.

[0033] As an implementable mode, a valve is provided on the drain pipe 31. The valve can be a manual valve or an electronic valve. When the valve on the drain pipe 31 is opened, the discharged condensed water can enter the water storage tank 3.

[0034] As an implementable mode, the inter-stage cooler 1 of the air compressor includes a housing and a partition plate 15 disposed inside the housing. The partition plate 15 is of a U-shaped structure. The partition plate 15 divides the interior of the housing into a first region and a second region. The compressed air inlet pipe 11 and the compressed air outlet pipe 12 are disposed at the top of the housing, and the drain port is disposed at the bottom of the housing. The compressed air inlet pipe 11, the compressed air outlet pipe 12, and the drain port communicate with the first region. The circulating water inlet pipe 13 and the circulating water outlet pipe 14 are disposed at the side end of the housing and communicate with the second region. External compressed air enters the first region through the compressed air inlet pipe 11, and external cooling water enters the second region through the circulating water inlet pipe 13. The cooling water and the compressed air exchange heat through the partition plate 15. After the heat exchange is completed, the compressed air is discharged through the compressed air outlet pipe 12, and the cooling water is discharged through the circulating water outlet pipe 14. During heat exchange, the condensed water carried by the compressed air is discharged through the drain port. Among them, a plurality of flow guiding ribs are provided inside the housing, respectively located in the first region and the second region. The flow guiding ribs ensure that the external compressed air and the external cooling water exchange heat.

[0035] The above embodiments are only the preferred embodiments of the present invention, which are only used to explain the present invention and do not limit the scope of implementation of the present invention. For those skilled in the art of this technology, of course, other implementation modes can be easily made by means of replacement or change according to the technical content disclosed in this specification. Therefore, all changes and improvements made in the principles and process conditions of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. An automatic drainage device for an inter-stage cooler of an air compressor, comprising an inter-stage cooler (1) of an air compressor. A compressed air inlet pipe (11) and a compressed air outlet pipe (12) are arranged on the top of the inter-stage cooler (1) of the air compressor. A circulating water inlet pipe (13) and a circulating water outlet pipe (14) are arranged at the side end of the inter-stage cooler (1) of the air compressor. A drainage port is arranged at the bottom of the inter-stage cooler (1) of the air compressor, characterized in that, The automatic drainage device further includes a drainer (2) and a water storage tank (3) arranged on one side of the inter-stage cooler (1) of the air compressor. The water inlet of the drainer (2) is connected to the drain outlet through a water inlet pipe (21), the water outlet of the drainer (2) is connected to the water storage tank (3) through a water outlet pipe (22), a drain pipe (31) is arranged on the water storage tank (3), and the drain pipe (31) is connected to a water pump (32).

2. The automatic drainage device according to claim 1, characterized in that The automatic drainage device further includes a protective plate (4). The size of the protective plate (4) is larger than the size of the notch of the water storage tank (3). The protective plate (4) is rotatably arranged on the water storage tank (3) through a hinge and the protective plate (4) covers the notch of the water storage tank (3). A visual window (41) is arranged on the protective plate (4).

3. The automatic drainage device according to claim 2, characterized in that, A ladder (5) is arranged on the side wall of the water storage tank (3). The bottom of the ladder (5) is fixedly connected to the bottom wall of the water storage tank (3). A first notch is arranged on the protective plate (4), and the top of the ladder (5) passes through the first notch to the outside of the water storage tank (3).

4. The automatic drainage device according to claim 2, wherein, A water level gauge (6) is arranged on the side wall of the water storage tank (3). A second notch is arranged on the protective plate (4), and the bottom of the water level gauge (6) passes through the second notch to the inside of the water storage tank (3).

5. The automatic drainage device according to claim 1, characterized in that, External threads are arranged at both ends of the water inlet pipe (21), and internal threads matching the external threads are arranged on the inner walls of the water inlet and the drain outlet. The two ends of the water inlet pipe (21) are respectively threadedly connected to the water inlet and the drain outlet.

6. The automatic drainage device according to claim 1, wherein A valve is arranged on the drain pipe (31).

7. The automatic drainage device according to claim 1, wherein The inter-stage cooler (1) of the air compressor includes a housing and a partition plate (15) arranged inside the housing. The partition plate (15) divides the inside of the housing into a first area and a second area. The compressed air inlet pipe (11) and the compressed air outlet pipe (12) are arranged at the top of the housing, the drain outlet is arranged at the bottom of the housing, the compressed air inlet pipe (11), the compressed air outlet pipe (12) and the drain outlet are all communicated with the first area, and the circulating water inlet pipe (13) and the circulating water outlet pipe (14) are arranged at the side end of the housing and are communicated with the second area.

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