Circulating water system of centralized air compression station

Abstract

The utility model discloses a circulating water system of a centralized air compression station, relates to the technical field of metallurgy, and solves the problem that the circulating water system cannot be timely and effectively cut off once equipment fails. The cooling system comprises a first cooling tower, a second cooling tower, a water tank, a first water outlet pipeline, a second water outlet pipeline, a first water return pipeline and a second water return pipeline, a cooling water pump, a check valve and an electric butterfly valve are sequentially installed at the ends, close to the water tank, of the first water outlet pipeline and the second water outlet pipeline, and one end of the second water return pipeline is connected with a water inlet of the second cooling tower. The other end of the first water return pipeline is connected with water outlets of at least one centrifugal machine and at least one freezing dryer through electric butterfly valves, the first water outlet pipeline is communicated with the second water outlet pipeline through a connecting pipeline, and the first water return pipeline is communicated with the second water return pipeline through a connecting pipeline. According to the water circulation system, remote control is achieved through the electric butterfly valve, the labor intensity of opening and closing the valve is greatly reduced, and meanwhile start-stop interlocking with starting of the cooling water pump is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metallurgical technique field, concretely relates to air compression station, and especially to a kind of centralized air compression station circulating water system. BACKGROUND

[0002] The original design of the cooling water system of the centralized air compression station equipment of energy power plant is unreasonable, the cooling water from different cooling towers is not circulated and communicated with each other, and is connected with corresponding centrifuges and cold dry machines through independent pipelines to cool them down. The water from the centrifuges and cold dry machines after cooling down is circulated into the corresponding cooling towers through independent management, and the flow of different pipelines may be different, so that the circulation complementation cannot be realized. Meanwhile, the 8 small branch pipes of the centrifuge interstage pipeline and oil cooler cooling water are connected to the cooling water inlet and return water main, without a main valve to control the return water of corresponding centrifuge pole and cold dry machine. Once the equipment has a problem, the fault cannot be effectively cut off and isolated, and the gate valves on the inlet and return water pipelines are manually operated, so that the automation degree is low and the switching workload is large. SUMMARY

[0003] The utility model aims at solving the above-mentioned problems, and designs a centralized air compression station circulating water system to solve the problem that the circulating water system cannot be effectively cut off once the equipment has a problem.

[0004] To achieve the above-mentioned purpose, the utility model provides a centralized air compression station circulating water system, which comprises a first cooling tower, a second cooling tower, a water pool, a first water outlet pipeline, a second water outlet pipeline, a first water return pipeline and a second water return pipeline. The water in the first cooling tower and the second cooling tower flows into the water pool after being cooled down by the filler and the fan. The first water outlet pipeline and the second water outlet pipeline are connected with the water pool. A cooling water pump, a check valve and an electric butterfly valve are installed on the first water outlet pipeline and the second water outlet pipeline in sequence at the end close to the water pool. The end of the first water outlet pipeline away from the water pool is connected with the water inlet of at least one centrifuge. One end of the first water return pipeline is connected with the water inlet of the first cooling tower, and the other end is connected with the water outlet of at least one centrifuge.

[0005] The end of the second water outlet pipeline away from the water pool is connected with the water inlets of at least one centrifuge and at least one cold dry machine. One end of the second water return pipeline is connected with the water inlet of the second cooling tower, and the other end is connected with the water outlets of at least one centrifuge and at least one cold dry machine through electric butterfly valves. The electric butterfly valves are used to control the total return water of the centrifuges and the cold dry machines. The first water outlet pipeline is communicated with the second water outlet pipeline through a connecting pipeline. The first water return pipeline is communicated with the second water return pipeline through a connecting pipeline.

[0006] Preferably, the first water outlet pipeline and the second water outlet pipeline are connected with water outlet branch pipelines, the water outlet branch pipelines are connected with the multiple water inlets of the centrifugal machine through multiple manual butterfly valves, and a manual knife gate valve for controlling total water outlet is installed on the water outlet branch pipelines.

[0007] Preferably, the first water return pipeline and the second water return pipeline are connected with water return branch pipelines, the water return branch pipelines are connected with the multiple water outlets of the centrifugal machine through multiple manual butterfly valves, and the electric butterfly valve is installed on the water return branch pipelines.

[0008] Preferably, two water outlet pipelines are connected with the first water outlet pipeline and the second water outlet pipeline near the water pool, and a first manual butterfly valve, a cooling water pump, a check valve, an electric butterfly valve and a second manual butterfly valve are sequentially installed on the two water outlet pipelines.

[0009] Preferably, the first manual butterfly valve and the cooling water pump are connected through a rubber flexible connection.

[0010] Preferably, a filter pipeline is connected with the first water outlet pipeline and the second water outlet pipeline, both ends of the filter pipeline are connected with the first water outlet pipeline and the second water outlet pipeline to realize circulation, a filter is installed on the filter pipeline, a third manual butterfly valve is installed on the water inlet end of the filter pipeline, and a check valve and a third manual butterfly valve are installed on the water outlet end of the second water outlet pipeline.

[0011] Preferably, a third manual butterfly valve is installed on the first water outlet pipeline and the second water outlet pipeline between the water inlet end and the water outlet end of the filter pipeline.

[0012] Preferably, the second water return pipeline is also connected with the water inlet of the first cooling tower.

[0013] Preferably, multiple centrifugal machines are provided, and the multiple centrifugal machines are respectively connected in parallel on the first water outlet pipeline and the first water return pipeline and on the second water outlet pipeline and the second water return pipeline.

[0014] Preferably, multiple cold dry machines are provided, and the multiple cold dry machines are connected in parallel on the second water outlet pipeline and the second water return pipeline.

[0015] Compared with the prior art, the beneficial effects are that:

[0016] The water in the first cooling tower and the second cooling tower in the utility model is cooled by the filler and the fan, and then flows into the pool, and then is connected with different centrifuges and cold dryers through the first water outlet pipeline and the second water outlet pipeline to supply cooling water, and finally the water flowing out of the centrifuges and the cold dryers after heat exchange and cooling is returned to the first cooling tower and the second cooling tower through the first water return pipeline and the second water return pipeline, respectively, and cooling water pumps, check valves and electric butterfly valves are installed at the water inlet ends of the first water outlet pipeline and the second water outlet pipeline to automatically control the total water outlet.

[0017] The water circulation system upgrades and reforms the original air compression station cooling water system, realizes remote control of the original manual opening and closing of the valve, greatly reduces the labor intensity of workers in opening and closing the valve on site, and realizes start-stop interlocking of the newly added electric butterfly valve and the cooling water pump, so that the standby pump is automatically started and the pump outlet electric butterfly valve is automatically opened when the in-use pump fails, and the standby water pump is started in an emergency. Meanwhile, the problem of large operation amount of manual water quantity adjustment on site is solved, and the electric butterfly valve is arranged at the outlet of each centrifuge after the reform, so that the water quantity can be remotely adjusted in the central control room, and the centrifuge cooling water in the shutdown state is distributed to other in-use equipment to reduce water consumption and energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall mechanism schematic diagram of the conveying line in the utility model;

[0019] Figure 2 is Figure 1 structure schematic diagram when the gasket is removed;

[0020] Figure 3 is Figure 2 structure enlarged view of A in the middle;

[0021] Figure 4 is the structure schematic diagram of the adjusting plate.

[0022] In the figure, 1, first cooling tower; 2, second cooling tower; 3, water pool; 4, first water outlet pipeline; 5, second water outlet pipeline; 6, first water return pipeline; 7, second water return pipeline; 8, centrifugal machine; 9, cold dryer; 10, water outlet branch pipeline; 11, water outlet pipeline; 12, first manual butterfly valve; 13, cooling water pump; 14, check valve; 15, electric butterfly valve; 16, second manual butterfly valve; 17, water return branch pipeline; 18, filter; 19, manual knife gate valve; 20, filter pipeline; 21, third manual butterfly valve; 22, rubber flexible connection; 23, connecting pipeline. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] As shown in Figure 1 and Figure 2 A preferred embodiment of the utility model puts forward a circulating water system of centralized air compression station. The temperature of centrifugal machine 8 and cold dryer 9 will increase during working process. The circulating water system is mainly used for cooling centrifugal machine 8 and cold dryer 9. Centrifugal machine 8 is used for generating compressed air with required pressure and flow rate. The temperature of centrifugal machine 8 will increase during this process. Cold dryer 9 is connected with centrifugal machine 8 through gas pipeline. Cold dryer 9 is used for removing water and impurities in compressed air of centrifugal machine 9 and reducing the temperature of compressed air, so as to guarantee the quality of compressed air supplied to users.

[0025] It should be noted that the circular curve at the intersection of each line in the figure indicates that the two pipelines are not connected.

[0026] The circulating water system mainly comprises first cooling tower 1, second cooling tower 2, water pool 3, first water outlet pipeline 4, second water outlet pipeline 5, first water return pipeline 6, second water return pipeline 7 and the like. The number of cooling towers is not limited, and there can be two, three or more. Two cooling towers are taken as an example in the embodiment.

[0027] Specifically, the cooling water in first cooling tower 1 and second cooling tower 2 flows into water pool 3 in the form of overflow. The cooling tower is used for cooling the returned water, so as to form cooling water.

[0028] Two water outlet pipelines 11 are connected at one end of first water outlet pipeline 4 and second water outlet pipeline 5. Water outlet pipeline 11 is connected with water pool 3. The cooling water in water pool 3 flows into first water outlet pipeline 4 and second water outlet pipeline 5 through water outlet pipeline 11.

[0029] The first water outlet pipeline 4 and the second water outlet pipeline 5 connected with two water outlet pipes 11 are respectively located in two different pump houses. The other ends of the first water outlet pipeline 4 and the second water outlet pipeline 5 are connected to the main plant house of the centralized air compression station and connected with corresponding centrifugal machines 8 (i.e. centrifugal air compressors) and cold dry machines 9. The first water return pipeline 6 and the second water return pipeline 7 correspond to the first water outlet pipeline 4 and the second water outlet pipeline 5 respectively.

[0030] On each water outlet pipe 11, a third manual butterfly valve 21, a cooling water pump 13, a check valve 14, an electric butterfly valve 15, a first manual butterfly valve 12 and a second manual butterfly valve 16 are sequentially installed along the flow direction of the cooling water. The first manual butterfly valve 12 and the cooling water pump 13 are connected by a rubber flexible connection 22. Since the cooling water pump 13 will generate a large vibration in operation, the rubber flexible connection 22 can reduce the vibration. The electric butterfly valve 15 is used for automatically controlling the opening and closing of the water outlet pipe 11. The first manual butterfly valve 12 and the second manual butterfly valve 16 are used for manually controlling the opening and closing of both ends of the water outlet pipe 11, so as to maintain and replace the components located between the first manual butterfly valve 12 and the second manual butterfly valve 16.

[0031] One of the two water outlet pipes 11 is used as a backup, so that the circulating water system can work normally when damage occurs.

[0032] The outlet water control valve of the cooling water pump 13 is changed into a combination mode of the check valve 14 + the electric butterfly valve 15, which can effectively avoid the flow loss caused by the backflow of the cooling water from the standby pump side to the water pool 3 when the pump in use works due to the poor sealing of the water control valve. In addition, after the electric butterfly valve 15 is added, the operator in the centralized control room can remotely open the valve, which completely solves the problem of large workload of manually opening the valve before starting the pump.

[0033] After the transformation, one cooling water pump 13 can be started to run at low load of the air compression station, which solves the energy loss caused by the previous operation of two pumps.

[0034] As shown in Figure 2 , Figure 3 , a filter pipe 20 is connected in the middle of the first water outlet pipeline 4 and the second water outlet pipeline 5. A self-cleaning filter 18 is installed on each filter pipe 20. Two self-cleaning filters 18 are connected in parallel on the first water outlet pipeline 4 and the second water outlet pipeline 5 through the filter pipe 20.

[0035] A third manual butterfly valve 21 is installed at the water inlet end of the filtering pipe 20 along the flow direction of the cooling water, and a check valve 14 and a third manual butterfly valve 21 are installed at the water outlet end of the filtering pipe 20 in sequence. Normally, the third manual butterfly valves 21 at both ends of the filtering pipe 20 are in the open state, so that the cooling water first enters the self-cleaning filter 18, is filtered by the self-cleaning filter 18, and the check valve 14 prevents backflow of water.

[0036] A third manual butterfly valve 21 is installed between the water inlet end and the water outlet end of the filtering pipe 20 on the first water outlet pipe 11 and the second water outlet pipe 11. In the normal working state of the self-cleaning filter 18, the third manual butterfly valve 21 is in the closed state, so that the cooling water can flow into the self-cleaning filter 18 along the filtering channel, and then reflows into the first water outlet pipe 11 and the second water outlet pipe 11. When the self-cleaning filter 18 is damaged, the third manual butterfly valve 21 can be opened, and the third manual butterfly valves 21 at the water inlet end and the water outlet end of the filtering pipe 20 are closed, so as to repair or replace the self-cleaning filter 18.

[0037] In this embodiment, the first water outlet pipe 4 is divided into two branches, which flow into two centrifuges 8 respectively, and a third manual butterfly valve 21 controlled by a total controller is installed on each branch to control the on-off of the respective branch.

[0038] In other technical solutions, multiple centrifuges 8 can be connected in parallel on each branch of the first water outlet pipe 4.

[0039] As shown in Figure 4 The centrifuge 8 has three air coolers and an oil cooler. Each air cooler and the oil cooler has a water inlet and a water outlet. Each branch is connected to a corresponding water outlet branch pipe 10, and the water outlet branch pipe 10 is connected to the water inlets of the three air coolers and the water inlet of the oil cooler through four third manual butterfly valves 21, and the third manual butterfly valves 21 are used to control the water balance of the coolers and cut off the water source during maintenance.

[0040] A total manual knife gate valve 19 is installed on each water outlet branch pipe 10 to control the total water inlet of the water outlet branch pipe 10.

[0041] One end of the first water return pipe 6 is connected to the water inlet of the cooling tower, and the other end is connected to the centrifuge 8. Correspondingly, a water return branch pipe 17 is also connected to the first water return pipe 6, and the water return branch pipe 17 is connected to the water outlets of the three air coolers and the water outlet of the oil cooler through four third manual butterfly valves 21, and the third manual butterfly valves 21 are used to control the water outlet of each machine.

[0042] An electric butterfly valve 15 is installed on each return water branch pipe 17 to control the on-off of the cooling water of the single-cylinder centrifuge 8.

[0043] As shown in Figure 1 the second water outlet pipeline 5 is connected with the second cooling tower 2 at one end and is also connected with a water outlet branch pipe 10 at the other end, which is connected with a centrifuge 8, and the connection mode is consistent with the description of the first water outlet pipeline 4.

[0044] The return water branch pipe 17 is connected with the second return water pipeline 7, which is connected with the water outlet of the corresponding centrifuge 8, and the connection mode is consistent with the description of the first water outlet pipeline 4. At the same time, the electric butterfly valve 15 is installed on the return water branch pipe 17 to automatically control the water outlet flow of the centrifuge 8.

[0045] The main pipeline of the second water outlet pipeline 5 is connected with the water inlet of the cold dryer 9, and a gate valve is installed at the water inlet of the cold dryer 9. The second return water pipeline 7 is connected with the water outlet of the cold dryer 9, and an electric butterfly valve 15 is installed at the water outlet of the cold dryer 9, which can remotely control the on-off of the cooling water of the cold dryer 9 to balance the water consumption of the centrifuge 8.

[0046] In other technical solutions, multiple cold dryers 9 can also be provided, and the multiple cold dryers 9 are connected in parallel on the second water outlet pipeline 5 and the second return water pipeline 7.

[0047] The air cooler and oil cooler in the centrifuge are connected with cooling branch pipes made of metal hoses with a wrench type quick connector. When the cooler core is extracted, the wrench type connector can be directly pulled out to realize the core extraction and maintenance work. Before the transformation, the cooler core extraction work needs to remove many hard pipes, which is time-consuming and affects the maintenance efficiency. After the transformation, the maintenance time is greatly saved.

[0048] As shown in Figure 4 the first water outlet pipeline 4 is connected with the second water outlet pipeline 5 through the connecting pipeline 23, and the first water outlet pipeline 4 is connected with the second water outlet pipeline 5 through the connecting pipeline 23, so that they are connected in a cycle to realize water circulation complementation. In this way, the inlet and return water main pipes in the two water pump houses are connected in a cycle, and when the air compression station is under low load, a single cooling water pump 13 can be started to meet the production needs, solving the problem of energy waste caused by starting two cooling water pumps 13.

[0049] In specific work, the water in the first cooling tower 1 and the second cooling tower 2 flows into the water pool 3, then the cooling water in the water pool 3 is pumped into the first water outlet pipeline 4 and the second water outlet pipeline 5 by the cooling water pump 13, then flows through the self-cleaning filter 18, is filtered, and then flows to the corresponding centrifugal machine 8 and the cold dryer 9 to cool them, and the cooled backwater flows to the first cooling tower 1 and the second cooling tower 2 through the first backwater pipeline 6 and the second backwater pipeline 7. Since the first water outlet pipeline 4 and the second water outlet pipeline 5 are communicated, the cooling water in different water inlet pipelines also flows between each other, and the first backwater pipeline 6 and the second backwater pipeline 7 are communicated, so the backwater in different backwater pipelines also flows between each other, and finally all flows to the first cooling tower 1 and the second cooling tower 2.

[0050] The above technical scheme only embodies the preferred technical scheme of the technical scheme of the utility model, and some changes made by the person skilled in the art to some parts also embody the principle of the utility model and belong to the protection scope of the utility model.

Claims

1. A centralized air compression station circulating water system comprising a first cooling tower (1), a second cooling tower (2), a water pool (3), a first water outlet pipeline (4), a second water outlet pipeline (5), a first water return pipeline (6) and a second water return pipeline (7), characterized in that, The water in the first cooling tower (1) and the second cooling tower (2) flows into the pool (3) after being cooled by the filler and the fan, the first water outlet pipeline (4) and the second water outlet pipeline (5) are connected with the pool (3) respectively, and the first water outlet pipeline (4) and the second water outlet pipeline (5) are sequentially provided with a cooling water pump (13), a check valve (14) and an electric butterfly valve (15) at one end close to the pool (3), one end of the first water outlet pipeline (4) is connected with the water inlet of at least one centrifugal machine (8), one end of the first water return pipeline (6) is connected with the water inlet of the first cooling tower (1), and the other end is connected with the water outlet of at least one centrifugal machine (8); one end of the second water outlet pipeline (5) is connected with the water inlets of at least one centrifugal machine (8) and at least one cold dryer (9), one end of the second water return pipeline (7) is connected with the water inlet of the second cooling tower (2), and the other end is connected with the water outlets of at least one centrifugal machine (8) and at least one cold dryer (9) through the electric butterfly valve (15) respectively, and the electric butterfly valve (15) is used for controlling the total water return of the centrifugal machine (8) and the cold dryer (9), the first water outlet pipeline (4) is communicated with the second water outlet pipeline (5) through a connecting pipeline (23), and the first water return pipeline (6) is communicated with the second water return pipeline (7) through the connecting pipeline (23).

2. The circulating water system of a centralized air compression station according to claim 1, characterized in that, The first water outlet pipeline (4) and the second water outlet pipeline (5) are connected with water outlet branch pipelines (10), the water outlet branch pipelines (10) are connected with the water inlets of the centrifugal machines (8) through a plurality of manual butterfly valves respectively, and the water outlet branch pipelines (10) are provided with a manual knife gate valve (19) for controlling total water outlet.

3. The centralized air compression station circulating water system of claim 2, wherein, The first water return pipeline (6) and the second water return pipeline (7) are connected with water return branch pipelines (17), the water return branch pipelines (17) are connected with the water outlets of the centrifugal machines (8) through a plurality of manual butterfly valves respectively, and the electric butterfly valve (15) is installed on the water return branch pipelines (17).

4. The centralized air compression station circulating water system of claim 1, wherein, Two water outlet pipelines (11) are connected with one end of the first water outlet pipeline (4) and the second water outlet pipeline (5) close to the pool (3), and first manual butterfly valves (12), cooling water pumps (13), check valves (14), electric butterfly valves (15) and second manual butterfly valves (16) are sequentially installed on the two water outlet pipelines (11).

5. The centralized air compression plant circulating water system of claim 4, wherein, The first manual butterfly valve (12) and the cooling water pump (13) are connected through a rubber flexible connection (22).

6. The centralized air compression plant circulating water system of claim 1, wherein, The first water outlet pipeline (4) and the second water outlet pipeline (5) are connected with filter pipelines (20), both ends of the filter pipelines (20) are connected with the first water outlet pipeline (4) and the second water outlet pipeline (5), circulation is realized, filters (18) are installed on the filter pipelines (20), third manual butterfly valves (21) are installed on the water inlet ends of the filter pipelines (20), and check valves (14) and third manual butterfly valves (21) are installed on the water outlet ends of the second water outlet pipeline (5).

7. The centralized air compression plant circulating water system of claim 6, wherein, A third manual butterfly valve (21) is installed on the first water outlet pipeline (4) and the second water outlet pipeline (5) between the water inlet end and the water outlet end of the filter pipeline (20).

8. The centralized air compression station circulating water system of claim 1, wherein, The second water return pipeline (7) is also connected with the water inlet of the first cooling tower (1).

9. The centralized air compression station circulating water system of claim 1, wherein, The centrifuge (8) is provided with multiple centrifuges (8), and the multiple centrifuges (8) are respectively connected in parallel on the first water outlet pipeline (4) and the first water return pipeline (6) and the second water outlet pipeline (5) and the second water return pipeline (7).

10. The centralized air compression plant circulating water system of claim 1, wherein, The cold dryer (9) is provided with multiple cold dryers (9), and the multiple cold dryers (9) are connected in parallel on the second water outlet pipeline (5) and the second water return pipeline (7).

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