Nitrogen backwashing device of nitrogen compressor cooler

Abstract

The utility model discloses a nitrogen backwashing device for a nitrogen compressor cooler, and belongs to the technical field of heat exchanger tube bundle cleaning. The defects that in the prior art, when a traditional cooler is washed, time and labor are wasted for sealing head dismounting, and the washing effect is poor are overcome. The main body structure comprises a cooler, a nitrogen backwashing assembly and a circulating water washing assembly, the nitrogen backwashing assembly comprises a nitrogen inlet pipe, a nitrogen inlet switch valve arranged on the nitrogen inlet pipe, a water outlet pipe communicated with the nitrogen inlet switch valve, a water inlet pipe, a nitrogen outlet pipe communicated with the water inlet pipe and a nitrogen outlet switch valve arranged on the nitrogen outlet pipe, the water inlet of the cooler is further communicated with the water inlet pipe, and the water outlet of the cooler is connected with the water outlet pipe. The nitrogen compressor cooler flushing device is mainly used for flushing the nitrogen compressor cooler.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchanger tube bundle cleaning, and in particular relates to a nitrogen backwashing device for a nitrogen compressor cooler. Background Art

[0002] Nitrogen compressors play a vital role in industrial production, particularly in the chemical, petroleum, and natural gas industries, providing high-purity nitrogen to meet various process requirements. However, the proper operation of nitrogen compressors is highly dependent on the performance of their cooling systems. Traditional coolers are prone to clogging after prolonged operation due to impurities in the cooling medium, scale accumulation, or microbial growth. This not only reduces cooling efficiency but can also cause the compressor to overheat, increase energy consumption, and even pose safety risks.

[0003] In the prior art, the heat exchange effect of the primary and secondary coolers of the nitrogen compressor is poor, resulting in high exhaust temperatures in the primary and secondary coolers, and frequent cooler cleaning is required. The existing cleaning steps are: first, close all the water supply and return valves, repair and disassemble the primary and secondary heat exchanger heads, then first open the return water cycle to flush the heat exchanger, then open the inlet water cycle to flush, and after flushing, replace the new O-rings and reinstall the heads. However, the above cleaning steps have the following disadvantages: 1. Each cooler cleaning requires a power outage, which can easily cause significant economic losses in an industrial environment with continuous production; 2. Disassembling the heads is time-consuming and labor-intensive, and replacing new O-rings is expensive; 3. The flushing effect is poor, and the cooler's service life is short.

[0004] For example, the Chinese utility model patent with authorization announcement number CN 216694646 U discloses an online backwashing device for a shell-side circulating water cooler. The device realizes online backwashing by connecting high-pressure carbon dioxide gas and backwashing water. However, the device has the following disadvantages: the high-pressure carbon dioxide gas and backwashing water flow into the cooler together, which can only realize one flushing. The flushing effect achieved is limited and the sediment in the cooler cannot be completely discharged. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a nitrogen backwashing device for a nitrogen compressor cooler.

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

[0007] A nitrogen compressor cooler nitrogen backwashing device, comprising a cooler, a nitrogen backwashing component and a circulating water flushing component. The nitrogen backwashing component includes a nitrogen inlet pipe, a nitrogen inlet switch valve provided on the nitrogen inlet pipe, a water outlet pipe communicated with the nitrogen inlet switch valve, a water inlet pipe, a nitrogen outlet pipe communicated with the water inlet pipe, and a nitrogen outlet switch valve provided on the nitrogen outlet pipe. The water inlet of the cooler is also communicated with the water inlet pipe, and the water outlet is connected to the water outlet pipe.

[0008] Preferably, the circulating water flushing component includes a first water inlet pipe, a circulating water upper valve provided on the first water inlet pipe, a first water outlet pipe and a circulating water return valve provided on the first water outlet pipe.

[0009] Preferably, the first water inlet pipe is connected in parallel with the nitrogen outlet pipe and then communicated with the water inlet pipe, and the nitrogen inlet pipe is connected in parallel with the first water outlet pipe and then communicated with the water outlet pipe.

[0010] Preferably, pipe joints are provided at the ends of the nitrogen outlet pipe, the nitrogen inlet pipe, the first water inlet pipe and the first water outlet pipe.

[0011] Preferably, a switch valve is further provided on the nitrogen inlet pipe, and the switch valve is a flow valve.

[0012] Preferably, the cooler includes a first-stage cooler and a second-stage cooler connected in parallel.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By setting the nitrogen backwashing component, impurities and sediments inside the cooler can be effectively removed, the cooling efficiency can be improved, system failures caused by cooler blockage can be reduced, and the service life of the equipment can be extended. At the same time, by controlling the nitrogen inlet switch valve and the nitrogen outlet switch valve, precise flushing operations can be achieved, avoiding unnecessary energy waste;

[0015] 2. By introducing the circulating water flushing component, the cooler can be cleaned again after the nitrogen flushing is completed, reducing the operating cost and improving the water resource utilization rate. At the same time, the setting of the circulating water upper valve and the circulating water return valve makes the circulating water flushing process controllable, ensuring the flushing effect while avoiding excessive consumption of water resources;

[0016] 3. By connecting the nitrogen outlet pipe and the nitrogen inlet pipe in parallel with the first water inlet pipe and the first water outlet pipe of the circulating water flushing component respectively, an effective combination of nitrogen flushing and circulating water flushing is achieved, and the flushing method can be flexibly selected according to actual needs, improving the adaptability of the device and the convenience of operation;

[0017] 4. By providing pipe joints at the ends of each pipeline, it not only facilitates the quick connection and disassembly of the pipeline, simplifies the maintenance work, but also enhances the sealing and safety of the system, reducing the leakage risk;

[0018] 5. A switch valve is added to the nitrogen inlet pipe, further enhancing the controllability of nitrogen supply, enabling operators to more precisely control the nitrogen flow rate, ensuring both the flushing effect and avoiding waste of nitrogen resources, and improving the overall economy.

[0019] 6. The design of parallel connection of the primary cooler and the secondary cooler increases the redundancy of the cooling system. Even if a part fails, the other part can still continue to work, ensuring production continuity. At the same time, this design also facilitates adjusting the cooling capacity according to the actual load and optimizing energy utilization.

[0020] In summary, for the present utility model, first, the internal part of the cooler is cleaned for the first time through the nitrogen backwashing component. By using the method of high nitrogen pressure and low circulating water pressure, most of the sediment can be flushed out. Then, the internal part of the cooler is cleaned for the second time through the circulating water flushing component, and the remaining sediment inside the cooler can be flushed out. By backwashing the cooler with nitrogen, it is time-saving and labor-saving without disassembling the head, the flushing effect is good, and the service life of the cooler is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present utility model.

[0022] In the figure: 1, pipe joint; 2, circulating return water valve; 3, water outlet pipe; 4, secondary cooler; 5, primary cooler; 6, water inlet pipe; 7, nitrogen outlet switch valve; 8, circulating upper water valve; 9, nitrogen inlet switch valve; 10, switch valve; 11, nitrogen outlet pipe; 12, nitrogen inlet pipe; 13, first water inlet pipe; 14, first water outlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described below through specific embodiments in conjunction with the drawings.

[0024] Embodiment 1:

[0025] As Figure 1 shown, a nitrogen backwashing device for a nitrogen compressor cooler includes a cooler, a nitrogen backwashing component, and a circulating water flushing component. The nitrogen backwashing component includes a nitrogen inlet pipe 12, a nitrogen inlet switch valve 9 provided on the nitrogen inlet pipe 12, a water outlet pipe 3 connected to the nitrogen inlet switch valve 9, a water inlet pipe 6, a nitrogen outlet pipe 11 connected to the water inlet pipe 6, and a nitrogen outlet switch valve 7 provided on the nitrogen outlet pipe 11. The water inlet of the cooler is also connected to the water inlet pipe 6, and the water outlet is connected to the water outlet pipe 3. By setting the nitrogen backwashing component, the present utility model can effectively remove impurities and deposits inside the cooler, improve the cooling efficiency, reduce system failures caused by cooler blockage, and extend the service life of the equipment.

[0026] Embodiment 2:

[0027] A nitrogen gas backwashing device for a nitrogen compressor cooler, which is different from that in Embodiment 1 in that the circulating water flushing component includes a first water inlet pipe 13, a circulating water supply valve 8 provided on the first water inlet pipe 13, a first water outlet pipe 14, and a circulating water return valve 2 provided on the first water outlet pipe 14. Through the circulating water flushing component, the cooler can be cleaned again after the nitrogen gas flushing is completed, reducing the operating cost and improving the utilization rate of water resources. At the same time, the setting of the circulating water supply valve 8 and the circulating water return valve 2 makes the circulating water flushing process controllable, ensuring the flushing effect while avoiding excessive consumption of water resources.

[0028] Further, the first water inlet pipe 13 is connected in parallel with the nitrogen outlet pipe 11 and then connected to the water inlet pipe 6, and the nitrogen inlet pipe 12 is connected in parallel with the first water outlet pipe 14 and then connected to the water outlet pipe 3. By connecting the nitrogen outlet pipe 11 and the nitrogen inlet pipe 12 in parallel with the first water inlet pipe 13 and the first water outlet pipe 14 of the circulating water flushing component respectively, an effective combination of nitrogen gas flushing and circulating water flushing is achieved, and the flushing method can be flexibly selected according to actual needs, improving the adaptability of the device and the convenience of operation.

[0029] Further, pipe connectors 1 are provided at the ends of the nitrogen outlet pipe 11, the nitrogen inlet pipe 12, the first water inlet pipe 13, and the first water outlet pipe 14. The setting of pipe connectors 1 at the ends of each pipeline not only facilitates the quick connection and disassembly of the pipeline, simplifies the maintenance work, but also enhances the sealing performance and safety of the system, reducing the leakage risk.

[0030] Further, a switch valve 10 is also provided on the nitrogen inlet pipe 12, and the switch valve 10 is a flow valve. By adding a switch valve 10 on the nitrogen inlet pipe 12, the controllability of nitrogen gas supply is further enhanced. Since the switch valve 10 is a flow valve, the operator can more precisely control the nitrogen gas flow rate, ensuring the flushing effect while avoiding waste of nitrogen gas resources and improving the overall economy. <ocke="

[0031] Further, the cooler includes a first-stage cooler 5 and a second-stage cooler 4 connected in parallel. The design of connecting the first-stage cooler 5 and the second-stage cooler 4 in parallel increases the redundancy of the cooling system. Even if a certain part fails, the other part can still continue to work, ensuring the continuity of production.

[0032] The flushing steps of the present utility model are as follows:

[0033] The working principle of the nitrogen gas backwashing device for the nitrogen compressor cooler involves two main operation modes: nitrogen gas backwashing and circulating water flushing. These two modes can be used alone or in combination to keep the cooler clean and operate efficiently.

[0034] 1. Nitrogen gas backwashing mode:

[0035] When the cooler needs deep cleaning, first close the circulating return water valve 2 and the circulating supply water valve 8 of the cooler, then open the nitrogen inlet switch valve 9, the switch valve 10 and the nitrogen outlet switch valve 7. High-pressure nitrogen enters the cooler through the nitrogen inlet pipe 12 and the water outlet pipe 3. Under the action of pressure, the nitrogen gas flows through the inside of the cooler, pushing the sediment and impurities towards the nitrogen outlet pipe 11; the nitrogen gas flows through the nitrogen outlet pipe 11, carrying the impurities out of the cooler to achieve the purpose of cleaning.

[0036] 2. Circulating water flushing mode:

[0037] Circulating water flushing, as a means of daily maintenance or mild cleaning, makes the circulating water flow inside the cooler by opening the circulating return water valve 2 and the circulating supply water valve 8, and at the same time closing the nitrogen inlet switch valve 9, the switch valve 10 and the nitrogen outlet switch valve 7. The clean circulating water enters through the first water inlet pipe 13 and the water inlet pipe 6, flows through the cooler, takes away the dust and slight sediment on the surface, and then is discharged through the water outlet pipe 3 and the first water outlet pipe 14.

[0038] This mode can be carried out without shutting down the machine and is suitable for daily preventive maintenance to prevent the performance of the cooler from gradually declining.

[0039] 3. Comprehensive flushing mode:

[0040] In some cases, nitrogen backwashing and circulating water flushing can be combined. First, use high-pressure nitrogen for deep cleaning, and then use circulating water flushing to remove the remaining impurities and particles. The combined use of the two modes can achieve a more comprehensive cleaning effect, and at the same time, through the parallel-connected pipeline design, efficient switching and operation can be realized.

[0041] First, close the circulating return water valve 2 and the circulating supply water valve 8 of the cooler, then open the nitrogen inlet switch valve 9, the switch valve 10 and the nitrogen outlet switch valve 7. High-pressure nitrogen enters the cooler through the nitrogen inlet pipe 12 and the water outlet pipe 3. Under the action of pressure, the nitrogen gas flows through the inside of the cooler, pushing the sediment and impurities towards the nitrogen outlet pipe 11; the nitrogen gas flows through the nitrogen outlet pipe 11, carrying the impurities out of the cooler to complete the purpose of the first cleaning. Then, close the nitrogen inlet switch valve 9, the switch valve 10 and the nitrogen outlet switch valve 7, and open the circulating return water valve 2 and the circulating supply water valve 8 to make the circulating water flow inside the cooler. The clean circulating water enters through the first water inlet pipe 13 and the water inlet pipe 6, flows through the cooler, takes away the remaining sediment, and then is discharged through the water outlet pipe 3 and the first water outlet pipe 14 to achieve the purpose of the second cleaning of the inside of the cooler, and the remaining sediment inside the cooler can be flushed out.

[0042] Based on the above working principle, the nitrogen backwashing device of the nitrogen compressor cooler can effectively maintain the cleanliness of the cooler, improve the cooling efficiency, extend the service life of the equipment, and at the same time reduce the maintenance time and cost.

Claims

1. A nitrogen backwash device for a nitrogen compressor cooler, characterized by: The invention comprises a cooler, a nitrogen backwashing assembly and a circulating water flushing assembly. The nitrogen backwashing assembly comprises a nitrogen inlet pipe (12), a nitrogen inlet switch valve (9) arranged on the nitrogen inlet pipe (12), a water outlet pipe (3) connected to the nitrogen inlet switch valve (9), a water inlet pipe (6), a nitrogen outlet pipe (11) connected to the water inlet pipe (6), and a nitrogen outlet switch valve (7) arranged on the nitrogen outlet pipe (11). The water inlet of the cooler is also connected to the water inlet pipe (6), and the water outlet is connected to the water outlet pipe (3).

2. The nitrogen backwashing device for a nitrogen compressor cooler according to claim 1, characterized in that: The circulating water flushing assembly comprises a first water inlet pipe (13), a circulating water supply valve (8) arranged on the first water inlet pipe (13), a first water outlet pipe (14), and a circulating water return valve (2) arranged on the first water outlet pipe (14).

3. The nitrogen backwashing device for a nitrogen compressor cooler according to claim 2, characterized in that: The first water inlet pipe (13) is connected in parallel with the nitrogen outlet pipe (11) and then communicated with the water inlet pipe (6); the nitrogen inlet pipe (12) is connected in parallel with the first water outlet pipe (14) and then communicated with the water outlet pipe (3).

4. The nitrogen backwashing device for a nitrogen compressor cooler according to claim 3, characterized in that: The ends of the nitrogen outlet pipe (11), the nitrogen inlet pipe (12), the first water inlet pipe (13) and the first water outlet pipe (14) are all provided with pipe joints (1).

5. The nitrogen backwashing device for a nitrogen compressor cooler according to any one of claims 1 to 4, characterized in that: The nitrogen inlet pipe (12) is also provided with an on-off valve (10).

6. The nitrogen backwashing device for a nitrogen compressor cooler according to claim 5, characterized in that: The switch valve (10) is a flow valve.

7. The nitrogen backwashing device for a nitrogen compressor cooler according to any one of claims 1 to 4, characterized in that: The cooler comprises a primary cooler (5) and a secondary cooler (4) connected in parallel.

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