Nitrogen recycling device

Abstract

The utility model discloses a nitrogen recycling device which comprises a placing plate, a nitrogen pressure supporting mechanism, a nitrogen recycling mechanism, a water cooling supporting mechanism and a nitrogen preparing mechanism are arranged on the upper side of the placing plate, the nitrogen recycling mechanism comprises a nitrogen compressor, the surface of the nitrogen compressor is fixedly connected with a first air inlet pipe, and the surface of the nitrogen compressor is fixedly connected with a first air outlet pipe. Through the arrangement of the nitrogen recycling mechanism, nitrogen in the nitrogen compressor is conveyed into the conveying pipe through the first electromagnetic valve, the nitrogen is conveyed into the water cooling tower from bottom to top through the conveying pipe, normal-temperature water is cooled through the unsaturation of the nitrogen, and after the normal-temperature water in the water cooling tower is cooled, the nitrogen is recycled. The nitrogen is conveyed into the backflow pipe from the water cooling tower through the V104 valve, and then the nitrogen is conveyed back into the nitrogen compressor through the second electromagnetic valve to be circularly utilized and treated, so that sufficient nitrogen exists in the nitrogen compressor, and overload operation of the nitrogen compressor caused by reduction of the use amount of a main line or equipment overhaul can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water cooling tower cooling, in particular to a nitrogen recycling device. Background Art

[0002] A water cooling tower is a device used to dissipate heat, mainly used to reduce the heat generated in industrial or commercial processes. It is often used in cooling water circulation systems such as air conditioning systems, cooling systems, and other equipment in industrial production.

[0003] Water cooling towers are divided into open water cooling towers and closed water cooling towers. When using open water cooling towers and closed water cooling towers, nitrogen is generally used to cool the warm water in the water cooling tower. At present, most of the nitrogen used in water cooling towers that use nitrogen for cooling water cooling towers generally does not flow back to the nitrogen compressor after being transported to the water cooling tower, which will cause nitrogen waste. In addition, if one set of air separation must be stopped due to a reduction in main line usage or equipment maintenance, the nitrogen production volume is reduced to about 37000m' / h (single set of air separation nitrogen production volume). Continuing to operate two nitrogen compressors will result in insufficient gas supply, which may cause the equipment to overload and increase the risk of damage, and the practicality is poor. Therefore, in order to solve the above problems, a nitrogen recycling device is hereby proposed. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a nitrogen recycling device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for nitrogen recycling, comprising a placement plate, a nitrogen pressure support mechanism, a nitrogen recycling mechanism, a water-cooling support mechanism, and a nitrogen production mechanism are arranged on the upper side of the placement plate, the nitrogen recycling mechanism comprises a nitrogen compressor, a first air inlet pipe is fixedly connected to the surface of the nitrogen compressor, a first air outlet pipe is fixedly connected to the surface of the nitrogen compressor, one end of the first air outlet pipe is fixedly connected to a delivery pipe through a flange, a first solenoid valve is fixedly installed inside the delivery pipe, one end of the delivery pipe is fixedly connected to a water cooling tower, a reflux pipe is fixedly connected to the lower side of the water cooling tower, a V104 valve is fixedly installed inside the reflux pipe, a second solenoid valve is fixedly installed inside the reflux pipe, one end of the reflux pipe is fixedly connected to the nitrogen compressor, the delivery pipe is communicated with the water cooling tower, the reflux pipe is also communicated with the water cooling tower, two nitrogen compressors are arranged, and therefore two nitrogen pressure support mechanisms are also arranged.

[0006] Preferably, a mass flow meter is fixedly installed inside the delivery pipe, the mass flow meter is electrically connected to the first solenoid valve, the detection end of the mass flow meter is arranged inside the delivery pipe, and the mass flow meter is an instrument that determines the flow rate by measuring the mass of the gas passing through the flow meter.

[0007] Preferably, the nitrogen pressure support mechanism includes a first fixed plate, a first fixed rod is fixedly connected to the upper side of the first fixed plate, the first fixed plate is fixed to the upper side of the placement plate by screws, the first fixed rod is fixedly connected to the nitrogen compressor, and a plurality of first fixed plates are provided, which are arranged at a position outside the lower end of the nitrogen compressor.

[0008] Preferably, the water-cooling support mechanism includes a second fixed plate, a second fixed rod is fixedly connected to the upper side of the second fixed plate, the second fixed plate is fixed to the upper side of the placement plate by screws, the second fixed rod is fixedly connected to the water cooling tower, and there are several second fixed rods, which are respectively arranged at the outer position of the lower end of the water cooling tower.

[0009] Preferably, the nitrogen production mechanism includes an air separator, a second air inlet pipe is fixedly connected to the surface of the air separator, a second air outlet pipe is fixedly connected to the surface of the air separator, one end of the second air outlet pipe is fixedly connected to a connecting pipe via a flange, and the other end of the connecting pipe is fixedly connected to the first air inlet pipe via a flange. Two air separators are also provided, corresponding to the two nitrogen compressors, and the air separators are fixedly installed at a position on one side of the upper side of the placement plate.

[0010] Preferably, a rubber pad is fixedly connected to the lower side of the placement plate, a groove is opened on the lower surface of the rubber pad, and two rubber pads are provided, which are respectively arranged at two sides of the lower side of the placement plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model is provided with a nitrogen recycling mechanism. The first solenoid valve conveys the nitrogen in the nitrogen compressor to the conveying pipe, and the nitrogen is conveyed from bottom to top to the water cooling tower through the conveying pipe to cool the normal temperature water by utilizing the unsaturation of nitrogen. After cooling the normal temperature water in the water cooling tower, the nitrogen is conveyed from the water cooling tower to the reflux pipe through the V104 valve, and then conveyed back to the nitrogen compressor through the second solenoid valve for recycling and utilization treatment, so that there is sufficient nitrogen in the nitrogen compressor, which can effectively avoid the overload operation of the nitrogen compressor due to the reduction of main line usage or equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model from the side;

[0016] Figure 3 It is a schematic diagram of the overall structure of the rear view of the utility model.

[0017] In the figure: 1. placement plate; 2. nitrogen compressor; 3. first air inlet pipe; 4. first air outlet pipe; 5. delivery pipe; 6. first solenoid valve; 7. water cooling tower; 8. reflux pipe; 9. V104 valve; 10. second solenoid valve; 11. mass flow meter; 12. first fixed plate; 13. first fixed rod; 14. second fixed plate; 15. second fixed rod; 16. air separator; 17. second air inlet pipe; 18. second air outlet pipe; 19. connecting pipe; 20. rubber pad; 21. notch. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 A nitrogen recycling device comprises a placement plate 1, a nitrogen pressure support mechanism, a nitrogen recycling mechanism, a water cooling support mechanism, and a nitrogen production mechanism are arranged on the upper side of the placement plate 1, and the nitrogen recycling mechanism comprises a nitrogen compressor 2, a first air inlet pipe 3 is fixedly connected to the surface of the nitrogen compressor 2, a first air outlet pipe 4 is fixedly connected to the surface of the nitrogen compressor 2, a delivery pipe 5 is fixedly connected to one end of the first air outlet pipe 4 through a flange, a first solenoid valve 6 is fixedly installed inside the delivery pipe 5, a water cooling tower 7 is fixedly connected to one end of the delivery pipe 5, a reflux pipe 8 is fixedly connected to the lower side of the water cooling tower 7, a V104 valve 9 is fixedly installed inside the reflux pipe 8, a second solenoid valve 10 is fixedly installed inside the reflux pipe 8, and one end of the reflux pipe 8 is fixedly connected to the nitrogen compressor 2. A mass flow meter 11 is fixedly installed inside the delivery pipe 5, and the mass flow meter 11 is electrically connected to the first solenoid valve 6. The first solenoid valve 6 is started to allow the nitrogen in the nitrogen compressor 2 to flow into the delivery pipe 5 through the first outlet pipe 4, and then the nitrogen is transported from bottom to top to the water cooling tower 7 through the delivery pipe 5 to cool the normal temperature water using the unsaturation of nitrogen. At the same time, after the normal temperature water in the water cooling tower 7 is cooled, the nitrogen will be transported from the water cooling tower 7 to the reflux pipe 8 through the V104 valve 9, and then the nitrogen will be transported back to the nitrogen compressor 2 through the second solenoid valve 10 for recycling and utilization treatment, so that there is sufficient nitrogen in the nitrogen compressor 2, which can effectively avoid overload operation of the nitrogen compressor 2 due to reduced main line usage or equipment maintenance.

[0020] In one aspect of the present embodiment, the nitrogen compressor 2 is first fixed in the first fixing rod 13, and then the first fixing plate 12 is fixed to the upper side of the placement plate 1 by screws, so that the nitrogen compressor 2 can be fixed and operated on the upper side of the placement plate 1, and then the water cooling tower 7 is fixed in the second fixing rod 15, and the second fixing plate 14 is fixed to the upper side of the placement plate 1 by screws, so that the water cooling tower 7 is also fixed on the placement plate 1 for use.

[0021] In one aspect of this embodiment, the air separator 16 is a device for separating various gases in the air into pure gases; usually, these gases include nitrogen, oxygen, argon, etc.; the air separator 16 utilizes the different sizes, masses or other characteristics of gas molecules to separate them by physical methods, thereby obtaining high-purity gases. Therefore, air enters the air separator 16 through the second air inlet pipe 17, and the air separator 16 can produce nitrogen, which is then discharged from the second air outlet pipe 18. The nitrogen will be transported to the nitrogen compressor 2 through the connecting pipe 19 for compression treatment to ensure the provision of high-purity, high-pressure nitrogen.

[0022] In one aspect of this embodiment, rubber has excellent anti-slip properties. Placing the rubber pad 20 on the lower side of the placement plate 1 can effectively prevent the placement plate 1 from sliding. By opening the groove 21, the friction of the rubber pad 20 is increased, making the device more stably placed.

[0023] Working principle of the utility model: When the nitrogen recycling device is in use, the two air separation systems operate normally, and the nitrogen production capacity is sufficient (about 74000m 2 / h), the compression capacity of the two nitrogen compressors 2 is about 31500-42000m 2 / h, a portion of nitrogen (about 10000-17000m 2 / h) to the water cooling tower 7, and the unsaturated nature of nitrogen is used to cool the normal temperature water from bottom to top. The cooled low temperature water can better pre-cool the air. When the main line usage is reduced or an air separation unit must be stopped for equipment maintenance, the nitrogen production volume is reduced to about 37000m 2 / h (nitrogen production of a single air separation unit). When the main line usage is reduced or an air separation unit must be stopped for maintenance, the nitrogen production is reduced to about 37000m 2 / h (nitrogen production capacity of a single air separation unit), continuing to operate the two nitrogen compressors 2 will result in insufficient gas supply, and the nitrogen volume going to the water cooling tower 7 will be recovered to fully guarantee the minimum gas volume required for the operation of the two nitrogen compressors 2; and the low-temperature pump and refrigerator corresponding to the air separation are started and operated, and normal temperature water cooling is carried out normally, and the recovered nitrogen goes to the nitrogen compressor 2 through the V104 valve 9; at the same time, the (medium-pressure nitrogen) supplementary (low-pressure nitrogen) system in the valve room is put into operation, and the minimum operating load of the two nitrogen compressors 2 is maintained with the maximum nitrogen volume of a single air separation unit; and the reflux valve of the low-pressure nitrogen compressor 2 is opened to prevent the increase in gas consumption in the main line from causing gas iron mouth and affecting the safety of the equipment. All electrical equipment in this scheme are powered by an external power supply.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A nitrogen recycling device, comprising a placement plate (1), characterized in that: The upper side of the placement plate (1) is provided with a nitrogen pressure support mechanism, a nitrogen recycling mechanism, a water cooling support mechanism, and a nitrogen production mechanism. The nitrogen recycling mechanism comprises a nitrogen compressor (2). A first air inlet pipe (3) is fixedly connected to the surface of the nitrogen compressor (2). A first air outlet pipe (4) is fixedly connected to the surface of the nitrogen compressor (2). One end of the first air outlet pipe (4) is fixedly connected to a delivery pipe (5) via a flange. A first solenoid valve (6) is fixedly installed inside the delivery pipe (5). One end of the delivery pipe (5) is fixedly connected to a water cooling tower (7). A return pipe (8) is fixedly connected to the lower side of the water cooling tower (7). A V104 valve (9) is fixedly installed inside the return pipe (8). A second solenoid valve (10) is fixedly installed inside the return pipe (8). One end of the return pipe (8) is fixedly connected to the nitrogen compressor (2).

2. The nitrogen recycling device according to claim 1, characterized in that: A mass flow meter (11) is fixedly installed inside the delivery pipe (5), and the mass flow meter (11) is electrically connected to the first solenoid valve (6).

3. The nitrogen recycling device according to claim 1, characterized in that: The nitrogen pressure support mechanism comprises a first fixing plate (12), the upper side of the first fixing plate (12) being fixedly connected to a first fixing rod (13), the first fixing plate (12) being fixed to the upper side of a placement plate (1) by means of screws, and the first fixing rod (13) being fixedly connected to a nitrogen compressor (2).

4. The nitrogen recycling device according to claim 1, characterized in that: The water-cooling support mechanism comprises a second fixing plate (14), the upper side of which is fixedly connected to a second fixing rod (15), the second fixing plate (14) being fixed to the upper side of the placement plate (1) by means of screws, and the second fixing rod (15) being fixedly connected to the water-cooling tower (7).

5. The nitrogen recycling device according to claim 1, characterized in that: The nitrogen production mechanism comprises an air separator (16), a second air inlet pipe (17) is fixedly connected to the surface of the air separator (16), a second air outlet pipe (18) is fixedly connected to the surface of the air separator (16), one end of the second air outlet pipe (18) is fixedly connected to a connecting pipe (19) via a flange, and the other end of the connecting pipe (19) is fixedly connected to the first air inlet pipe (3) via a flange.

6. The nitrogen recycling device according to claim 1, characterized in that: A rubber pad (20) is fixedly connected to the lower side of the placement plate (1), and a notch (21) is provided on the lower surface of the rubber pad (20).

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