Compressor backflow cooling system with self-adaptive pressure

Abstract

The utility model discloses a pressure self-adaptive compressor backflow cooling system which comprises an air inlet pipe, a spraying head is arranged on the outer surface of the air inlet pipe, an inlet buffer tank is arranged at the right end of the air inlet pipe, and a first connecting pipe is arranged at the output end of the inlet buffer tank. A compressor is arranged at the end, away from the inlet buffer tank, of the first connecting pipe, and a second connecting pipe is arranged at the output end of the compressor. By arranging a spray header, an inlet buffer tank, a PI online pressure gauge, a compressor, a condenser, a condensate tank, a TIC regulating valve, a return pipe, a water pump and a control valve, the temperature of a sprayed compressor inlet medium can be controlled to be below the sum of the medium dew point temperature and the temperature deviation value all the time; according to the spraying scheme, the situation that liquid drops are generated due to excessive spraying is avoided, meanwhile, it can be guaranteed that no condensate is separated out after a compression medium enters the compressor, and therefore the situation that the compressor is damaged is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressor backflow cooling technical field, especially in a kind of pressure self-adapting compressor backflow cooling system. BACKGROUND

[0002] Due to its performance limit, centrifugal compressor cannot be lower than surge flow when running load, when peripheral system load is lower than compressor surge flow, high-temperature gas at compressor outlet will be backflowed to compressor inlet through backflow valve, due to high temperature of backflow gas, compressor operating point will deviate from design point, and serious damage to equipment will be caused, so cooling measure must be equipped.

[0003] But conventional compressor backflow cooling method still has certain defects, for example: due to the fluctuation of compressor outlet pressure to some extent, and the fluctuation degree of individual compressor is larger, so the mode of conventional temperature control has limitation, must ensure that the set spray temperature is always higher than gas dew point under inlet pressure, to ensure that no condensate occurs, otherwise compressor will be damaged. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of pressure self-adapting compressor backflow cooling systems, at least solve one of the technical problems existing in prior art, can be always made after the temperature of compressor inlet medium after spraying be controlled below the sum of medium dew point temperature and temperature deviation, so that when compressor inlet pressure fluctuates arbitrarily, this spray scheme also cannot form excessive spray and lead to the condition of droplet generation, simultaneously, it can guarantee that no condensate is generated after compressed medium enters compressor, to prevent the condition of damaging compressor from occurring.

[0005] The utility model also provides the compressor backflow cooling system with the above-mentioned one kind of pressure self-adapting, comprising:

[0006] Air inlet pipe, the outer surface of the air inlet pipe is provided with spray head, the right end of the air inlet pipe is provided with inlet buffer tank, the output end of the inlet buffer tank is provided with first connecting pipe, the end of the first connecting pipe away from inlet buffer tank is provided with compressor, the output end of the compressor is provided with second connecting pipe, the end of the second connecting pipe away from compressor is provided with condenser, the output end of the condenser is provided with third connecting pipe, the end of the third connecting pipe away from condenser is provided with condensate tank, the outer surface of the condensate tank is provided with fourth connecting pipe, the outer surface of the condensate tank is provided with condensate discharge pipe, the outer surface of the second connecting pipe is provided with backflow pipe, the outer surface of the fourth connecting pipe is provided with water pump.

[0007] According to the pressure-adaptive compressor reflux cooling system, the air inlet pipe is connected to the reflux pipe to facilitate the reflux of gas, and a control valve is provided on the outer surface of the reflux pipe to control the reflux of liquid.

[0008] According to the pressure-adaptive compressor reflux cooling system, a PI online pressure gauge is provided on the outer surface of the inlet buffer tank, a TIC regulating valve is provided on the outer surface of the fourth connecting pipe, and a demister is provided inside the inlet buffer tank to prevent liquid from entering the interior of the compressor.

[0009] According to the pressure-adaptive compressor reflux cooling system, the PI online pressure gauge is electrically connected to the TIC regulating valve for controlling the condensate spraying amount.

[0010] According to the pressure-adaptive compressor reflux cooling system, the PI online pressure gauge and the TIC regulating valve are both electrically connected to an external power supply.

[0011] According to the pressure-adaptive compressor return cooling system, the fourth connecting pipe is connected to the spray head.

[0012] According to the pressure-adaptive compressor reflux cooling system, the air inlet pipe, the first connecting pipe, the second connecting pipe, the third connecting pipe, the fourth connecting pipe, the condensate discharge pipe and the reflux pipe are all pressure-resistant oil pipes, which are used to improve the stability of gas transportation in the pipeline.

[0013] According to the pressure-adaptive compressor reflux cooling system, the compressor and the condenser are both electrically connected to an external power supply.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By setting up the spray head, inlet buffer tank, PI online pressure gauge, compressor, condenser, condensate tank, TIC regulating valve, return pipe, water pump and control valve, the compressor inlet medium temperature after spraying can always be controlled below the sum of the medium dew point temperature and the temperature deviation value. Therefore, when the compressor inlet pressure fluctuates arbitrarily, this spraying solution will not cause excessive spraying and the generation of droplets;

[0016] 2. At the same time, it can ensure that no condensate will be precipitated after the compressed medium enters the compressor, thereby preventing damage to the compressor.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall architecture of a pressure-adaptive compressor return cooling system of the present invention.

[0020] Legend:

[0021] 1. Air inlet pipe; 2. Sprinkler head; 3. Inlet buffer tank; 4. PI online pressure gauge; 5. First connecting pipe; 6. Compressor; 7. Second connecting pipe; 8. Condenser; 9. Third connecting pipe; 10. Condensate tank; 11. Fourth connecting pipe; 12. TIC regulating valve; 13. Condensate discharge pipe; 14. Reflux pipe; 15. Defoamer; 16. Water pump; 17. Control valve. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] Reference Figure 1The utility model discloses a kind of compressor backflow cooling systems of pressure self-adaption, it includes: air inlet pipe 1, the outer surface of air inlet pipe 1 is provided with shower head 2, the right end of air inlet pipe 1 is provided with inlet buffer tank 3, the setting of inlet buffer tank 3, gas flow can be stabilized, also can separate liquid possibly contained in gas, the output end of inlet buffer tank 3 is provided with first connecting pipe 5, the end of first connecting pipe 5 away from inlet buffer tank 3 is provided with compressor 6, the output end of compressor 6 is provided with second connecting pipe 7, the end of second connecting pipe 7 away from compressor 6 is provided with condenser 8, the output end of condenser 8 is provided with third connecting pipe 9, the end of third connecting pipe 9 away from condenser 8 is provided with condensate tank 10, the outer surface of condensate tank 10 is provided with fourth connecting pipe 11, the outer surface of condensate tank 10 is provided with condensate discharge pipe 13, the outer surface of second connecting pipe 7 is provided with backflow pipe 14, the outer surface of fourth connecting pipe 11 is provided with water pump 16, water pump 16 is used for the delivery of condensate, air inlet pipe 1 is communicated with backflow pipe 14, the outer surface of backflow pipe 14 is provided with control valve 17, the outer surface of inlet buffer tank 3 is provided with PI online pressure gauge 4, the outer surface of fourth connecting pipe 11 is provided with TIC regulating valve 12, the inside of inlet buffer tank 3 is provided with demister 15, the setting of demister 15 can avoid that gas containing liquid enters compressor 6, PI online pressure gauge 4 and TIC regulating valve 12 are electrically connected, PI online pressure gauge 4 and TIC regulating valve 12 are electrically connected with external power supply, fourth connecting pipe 11 is communicated with shower head 2, air inlet pipe 1, first connecting pipe 5, second connecting pipe 7, third connecting pipe 9, fourth connecting pipe 11, condensate discharge pipe 13 and backflow pipe 14 are all pressure-resistant oil pipes, compressor 6 and condenser 8 are electrically connected with external power supply.

[0024] Working principle: when working, gas enters air inlet pipe 1 through external delivery pump, then enters inlet buffer tank 3 through shower head 2, then realizes compressor backflow cooling operation under the action of first connecting pipe, compressor, second connecting pipe, condenser, third connecting pipe, condensate tank, fourth connecting pipe, TIC regulating valve and water pump, and in backflow cooling process, the operating pressure of compressor 6 inlet can be detected by PI online pressure gauge 4, and the dew point temperature of medium under the operating pressure according to the medium characteristics of compressor 6 inlet is set in DCS control system, at the same time, a fixed temperature deviation value is set for DCS control system, then condensate spraying amount is controlled by TIC regulating valve 12, and the medium temperature of compressor 6 inlet after spraying is always controlled below the sum of dew point temperature and temperature deviation value, so that when the inlet pressure of compressor 6 fluctuates, the present spraying scheme will not form excessive spraying to cause liquid drop, and then it is ensured that no condensate is precipitated when compressed medium enters compressor 6, to prevent the damage of compressor 6.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A pressure-adaptive compressor reflux cooling system, characterized in that: include: An air inlet pipe (1), wherein a spray head (2) is provided on the outer surface of the air inlet pipe (1), an inlet buffer tank (3) is provided at the right end of the air inlet pipe (1), a first connecting pipe (5) is provided at the output end of the inlet buffer tank (3), a compressor (6) is provided at the end of the first connecting pipe (5) away from the inlet buffer tank (3), a second connecting pipe (7) is provided at the output end of the compressor (6), a condenser (8) is provided at the end of the second connecting pipe (7) away from the compressor (6), a third connecting pipe (9) is provided at the output end of the condenser (8), a condensate tank (10) is provided at the end of the third connecting pipe (9) away from the condenser (8), a fourth connecting pipe (11) is provided on the outer surface of the condensate tank (10), a condensate discharge pipe (13) is provided on the outer surface of the condensate tank (10), a reflux pipe (14) is provided on the outer surface of the second connecting pipe (7), and a water pump (16) is provided on the outer surface of the fourth connecting pipe (11).

2. The pressure-adaptive compressor return cooling system according to claim 1, characterized in that: The air inlet pipe (1) is connected to a return pipe (14), and a control valve (17) is provided on the outer surface of the return pipe (14).

3. The pressure-adaptive compressor return cooling system according to claim 1, characterized in that: The outer surface of the inlet buffer tank (3) is provided with a PI online pressure gauge (4), the outer surface of the fourth connecting pipe (11) is provided with a TIC regulating valve (12), and the interior of the inlet buffer tank (3) is provided with a demister (15).

4. The pressure-adaptive compressor return cooling system according to claim 3, characterized in that: The PI online pressure gauge (4) is electrically connected to the TIC regulating valve (12).

5. The pressure-adaptive compressor return cooling system according to claim 3, characterized in that: The PI online pressure gauge (4) and the TIC regulating valve (12) are both electrically connected to an external power supply.

6. The pressure-adaptive compressor return cooling system according to claim 1, characterized in that: The fourth connecting pipe (11) is connected to the spray head (2).

7. The pressure-adaptive compressor return cooling system according to claim 1, characterized in that: The air inlet pipe (1), the first connecting pipe (5), the second connecting pipe (7), the third connecting pipe (9), the fourth connecting pipe (11), the condensate discharge pipe (13) and the return pipe (14) are all pressure-resistant oil pipes.

8. The pressure-adaptive compressor return cooling system according to claim 1, characterized in that: The compressor (6) and the condenser (8) are both electrically connected to an external power source.

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