Condensate water recovery pipeline of air compressor

Abstract

The utility model belongs to the technical field of air compressor equipment, and relates to an air compressor condensate water recovery pipeline which comprises an air compressor, a first-stage impeller, a second-stage impeller and a third-stage impeller are arranged in the air compressor, and a first-stage drain pipe, a second-stage drain pipe and a third-stage drain pipe are respectively led out from one side of the air compressor and connected to a water tank. A water outlet pipe is led out of one side of the bottom of the water tank and connected to the air separation water cooling tower, and a first-stage flushing pipe, a second-stage flushing pipe and a third-stage flushing pipe are led out of the water outlet pipe and connected with a first-stage impeller, a second-stage impeller and a third-stage impeller respectively and then connected back to form a concentric-square-shaped pipeline. According to the utility model, condensed soft water is recycled at two different parts, so that the comprehensive utilization of resources is realized, the consumption of primary water is reduced, the water quality of a water system is improved, meanwhile, the discharge of different accumulated water amounts is realized, the human intervention is reduced, the field environment is kept clean and tidy, and the comprehensive utilization of soft water resources is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to air compressor equipment technical field, concretely relates to a kind of air compressor condensate recovery pipeline. BACKGROUND

[0002] Steel plant is matched with air separation device, air is separated using deep freezing method, and oxygen, nitrogen industrial gas medium is supplied for steel plant. Among them, air compressor provides raw material air for air separation device, and is the main energy source of air separation device. Compressor is compressed to 0.45-0.5MPa, and with the compression of air, water vapor in atmosphere is saturated and separated. With the oxygen production of 60,000 m 3 / h air separation device as an example, the flow of compressed air is 300,000 m 3 / h. In 30 ℃ environment, the water vapor content in air is about 30.3g / m 3 . At this time, the water amount separated in compressed air is 7200kg / h. Compared with industrial circulating water, the content of calcium and magnesium ions in water separated in air is less, and it is called soft water. Using this method, high-quality condensate can be recycled.

[0003] Air compressor interstage condensate uses the way of ditch, and is not recycled. In circulating water pool, once water is supplemented, water level is ensured normal, and compressor and other equipment are supplied cooling. The following problems exist in daily use:

[0004] 1. Poor site neatness;

[0005] 2. Water is stored in ditch, and water pipe is corroded;

[0006] 3. Once water is supplemented in circulating water pool, production cost rises.

[0007] Therefore, an air compressor condensate recovery pipeline is proposed. UTILITY MODEL CONTENT

[0008] The utility model aims at providing an air compressor condensate recovery pipeline, which has the function of recycling air compressor condensate soft water, and solves the problem that air compressor interstage condensate in prior art uses the way of ditch and is not recycled.

[0009] In order to achieve the above object, the utility model adopts the technical scheme, the utility model provides an air compressor condensate water recycling pipeline, including air compressor, the air compressor inside is provided with primary impeller, secondary impeller and tertiary impeller, air compressor one side leads out primary drain pipe, secondary drain pipe and tertiary drain pipe respectively, primary drain pipe, secondary drain pipe and tertiary drain pipe are connected to water tank, is provided with electromagnetic liquid level gauge on water tank, water tank bottom one side leads out and is connected to air separation water cooling tower water outlet pipe, water outlet pipe is provided with centrifugal water pump, water outlet check valve, pressure gauge, external supply valve and external supply check valve in proper order, water pump backflow pipe is led out on water outlet pipe and is connected to water tank top one side, water outlet pipe leads out primary flushing pipe, secondary flushing pipe and tertiary flushing pipe, primary flushing pipe, secondary flushing pipe and tertiary flushing pipe are divided into two roads and are connected to primary impeller, secondary impeller and tertiary impeller upper and lower sides respectively.

[0010] As preferred, the primary drain pipe, the secondary drain pipe and the tertiary drain pipe are respectively provided with a primary drain valve, a secondary drain valve and a tertiary drain valve.

[0011] As preferred, the water pump backflow pipe is provided with a water pump backflow valve.

[0012] As preferred, the water pump backflow pipe is connected between the water outlet check valve and the pressure gauge on the water outlet pipe.

[0013] As preferred, the primary flushing pipe, the secondary flushing pipe and the tertiary flushing pipe are connected between the pressure gauge and the external supply valve on the water outlet pipe.

[0014] As preferred, the primary flushing pipe, the secondary flushing pipe and the tertiary flushing pipe are respectively provided with a primary flushing valve, a secondary flushing valve and a tertiary flushing valve, and the primary flushing valve, the secondary flushing valve and the tertiary flushing valve are arranged at the first ends of the primary flushing pipe, the secondary flushing pipe and the tertiary flushing pipe respectively.

[0015] As preferred, the water outlet pipe is connected with a water supplement pipe at the end, and the water supplement pipe is provided with a water supplement valve and a filter.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that,

[0017] 1. The condensate water is recycled in two different positions, which realizes comprehensive utilization of resources, reduces consumption of primary water, improves water quality of the water system, realizes external discharge of different water amounts, reduces human intervention, keeps the site environment clean, and realizes comprehensive utilization of soft water resources.

[0018] 2. The utility model has the function of recycling air compressor condensate water, which solves the problem of not recycling in the prior art that the air compressor interstage condensate water is discharged into a ditch. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a condensate recovery pipeline structure for an air compressor;

[0021] In the diagram above, 1. Air compressor, 2. First-stage impeller, 3. Second-stage impeller, 4. Third-stage impeller, 5. First-stage drain valve, 6. Second-stage drain valve, 7. Third-stage drain valve, 8. Water tank, 9. Centrifugal water pump, 10. Outlet check valve, 11. Water pump return valve, 12. Water pump return pipe, 13. First-stage flushing valve, 14. Second-stage flushing valve, 15. Third-stage flushing valve, 16. First-stage flushing pipe, 17. Second-stage flushing pipe, 18. Third-stage flushing pipe, 19. External supply valve, 20. External supply check valve, 21. Air separation water cooling tower, 22. Water supply valve, 23. Filter, 24. Electromagnetic level gauge, 25. Pressure gauge. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1, as Figure 1 As shown, an air compressor condensate recovery pipeline includes an air compressor 1. The air compressor 1 provides compressed air. By compressing atmospheric air to a high pressure, the air compressor 1 generates condensate during the compression process, thereby providing compressed air and ensuring the normal operation of the air separation unit.

[0025] The air compressor 1 is equipped with a first-stage impeller 2, a second-stage impeller 3, and a third-stage impeller 4. The first-stage impeller 2, the second-stage impeller 3, and the third-stage impeller 4 can progressively increase the pressure and temperature of the air. During the compression process, a certain amount of heat is generated, which causes water vapor to condense into water droplets. Through multi-stage compression, the air pressure can be increased more efficiently, providing sufficient raw material gas for subsequent air separation and producing recyclable condensate.

[0026] The air compressor 1 is respectively connected with a first drain pipe, a second drain pipe and a third drain pipe, which are connected to the water tank 8, and the first drain pipe, the second drain pipe and the third drain pipe discharge the condensed water vapor in the compressed air at different stages. The first drain pipe, the second drain pipe and the third drain pipe are respectively connected with the air compressor 1 at each stage, which helps to effectively remove the condensed water, realizes the effective classification collection of the condensed water, avoids the water accumulation in the equipment, and reduces the risk of corrosion and scale deposition.

[0027] The water tank 8 is used to collect the condensed water from the air compressor 1, facilitate subsequent utilization, prevent the condensed water from leaking, protect the equipment and reduce the waste of water resources. The water tank 8 is provided with an electromagnetic liquid level meter 24, which monitors the liquid level in the water tank 8 in real time, controls the collection and discharge of the condensed water, can accurately manage the liquid level of the water tank 8, and ensures the stable operation of the system.

[0028] The water tank 8 is provided with a water outlet pipe connected to the air separation water cooling tower 21 at one side of the bottom. The air separation water cooling tower 21 is a kind of equipment using air as cooling medium. The high-temperature and high-pressure gas or steam is introduced into the top of the tower, and then contacts with water at the bottom through a spraying system, so as to achieve the effect of cooling. The water outlet pipe sends the water from the water tank 8 to the air separation water cooling tower 21 and other equipment through the water outlet pipe, plays a cooling role, and makes the condensed water be recycled. Not only the water level of the pool is ensured to be normal, but also the production efficiency is improved and the consumption of additional water source is reduced.

[0029] The water outlet pipe is sequentially provided with a centrifugal water pump 9, a water outlet check valve 10, a pressure gauge 25, an external supply valve 19 and an external supply check valve 20. The centrifugal water pump 9 pumps the water flow from the water tank 8 to the outside to ensure the stable supply of the water flow. The water outlet check valve 10 controls the one-way flow of the water flow to prevent the water flow from flowing back. The pressure gauge 25 is used to detect the water pressure in the water outlet pipe. The external supply valve 19 controls the opening and closing of the water outlet pipe to provide the condensed water to the outside. The external supply check valve 20 ensures that the water flow of the external equipment cannot flow back.

[0030] The water outlet pipe is provided with a water pump backflow pipe 12 connected to one side of the top of the water tank 8. The water pump backflow pipe 12 can adjust the supply pressure of the water outlet pipe.

[0031] The water outlet pipe is provided with a first flushing pipe 16, a second flushing pipe 17 and a third flushing pipe 18. The first flushing pipe 16, the second flushing pipe 17 and the third flushing pipe 18 are divided into two paths and connected to the upper and lower sides of the first impeller 2, the second impeller 3 and the third impeller 4, respectively. The first flushing pipe 16, the second flushing pipe 17 and the third flushing pipe 18 are used to flush the first impeller 2, the second impeller 3 and the third impeller 4 in the air compressor 1, ensure the cleaning and maintenance of the impellers of the air compressor 1 at each stage, and reduce the accumulation of dirt and scale in the compressor through regular flushing, which helps to improve the efficiency of the compressor and prolong the service life.

[0032] The specific design of the above key components is described as follows:

[0033] The first level drain pipe, the second level drain pipe and the third level drain pipe are respectively provided with a first level drain valve 5, a second level drain valve 6 and a third level drain valve 7. The respective drain valves are arranged on each drain pipe to control the discharge of the condensed water and adjust the flow of the condensed water according to the working state of the compressor.

[0034] The water pump return pipe 12 is provided with a water pump return valve 11. The water pump return valve 11 controls the flow of the water pump return pipe 12 to reasonably reduce the pressure and avoid unnecessary backflow.

[0035] The connection position of the water pump return pipe 12 is between the water outlet check valve 10 and the pressure gauge 25 on the water outlet pipe. The water pump return pipe 12 is used to backflow and reduce the pressure after the water outlet pipe is closed by the water outlet check valve 10.

[0036] The connection position of the first level flushing pipe 16, the second level flushing pipe 17 and the third level flushing pipe 18 is between the pressure gauge 25 and the external supply valve 19 on the water outlet pipe. After the external supply valve 19 is closed, the water flow is sent to the first level flushing pipe 16, the second level flushing pipe 17 and the third level flushing pipe 18 for cleaning.

[0037] The first level flushing pipe 16, the second level flushing pipe 17 and the third level flushing pipe 18 are respectively provided with a first level flushing valve 13, a second level flushing valve 14 and a third level flushing valve 15. The first level flushing valve 13, the second level flushing valve 14 and the third level flushing valve 15 are arranged at the first ends of the first level flushing pipe 16, the second level flushing pipe 17 and the third level flushing pipe 18, respectively. The first level flushing valve 13, the second level flushing valve 14 and the third level flushing valve 15 control the opening and closing of the first ends of the first level flushing pipe 16, the second level flushing pipe 17 and the third level flushing pipe 18.

[0038] The water outlet pipe is connected with a water supplement pipe, and the water supplement pipe is provided with a water supplement valve 22 and a filter 23. The water supplement pipe is connected to an external water source. When the water amount is insufficient, the water supplement pipe can supplement sufficient water to maintain the normal water level of the air separation water cooling tower 21. The water supplement valve 22 controls the water flow of the water supplement pipe. The water supplement valve 22 is automatically or manually opened to ensure that an appropriate amount of water is supplemented to the water pool. The filter 23 is installed on the water supplement pipe to filter impurities, suspended matters, silt and the like in the externally supplemented water to prevent water source pollution.

[0039] Embodiment 2: An air compressor condensed water recovery pipeline as shown in embodiment 1, the specific implementation is as follows:

[0040] (1) A stainless steel material is selected to manufacture the water tank 8. The volume of the water tank 8 is 12-15m 3 . The pressure of the water outlet pipe is maintained at 0.3-0.4Mpa.

[0041] (2) Design the control program of water pump. The water tank 8 is designed with electromagnetic liquid level meter 24, which has local display and data remote transmission function. The data is transmitted to the DCS control computer to monitor the water level of the water tank 8 in real time. The centrifugal water pump 9 has manual and automatic control modes. The centrifugal water pump 9 is designed with a local power control box on site, which can realize local, zero and remote state switching. In the local mode, the centrifugal water pump 9 is manually controlled by clicking the start and stop buttons of the local control box. The operator controls the start and stop of the centrifugal water pump 9 according to the indication of the local liquid level meter; in the remote mode, the control logic is executed.

[0042] The water level control program is developed on the DCS control system, and the interlocking control of the water level of the water tank 8 and the automatic start and stop of the centrifugal water pump 9. The control logic is: when the water level of the water tank 8 rises to 2 meters, the DCS automatically sends a water pump start signal. When the water level drops to 0.2 meters, the DCS automatically sends a water pump stop signal. The control logic also has input and output options. And on the DCS system, a remote start and stop button is also designed. When the on-site control box switch is placed in the remote, DCS water level control program selection input. When the water level of the water tank 8 rises to 2 meters, the DCS sends an automatic start signal of the centrifugal water pump 9, and the centrifugal water pump 9 runs. When the water level drops to 0.2 meters, the DCS sends an automatic stop signal of the centrifugal water pump 9, and the centrifugal water pump 9 stops. When the on-site control box switch is placed in the remote, DCS water level control program selection exit, the process operator can control the centrifugal water pump 9 remotely according to the remote data of the electromagnetic liquid level meter 24 through the remote start and stop button.

[0043] (3) Compressor impeller, soft water flushing. First, close the external supply valve 19 on site. Second, start the centrifugal water pump 9, and open the first, second and third flushing valves 13, 14 and 15 on site respectively and alternately, to realize online flushing and maintenance of the air compressor 1 impeller, and regularly clean the impeller to improve the operation state of the equipment.

[0044] (4) Continuous external supply, recovery to air separation water cooling tower 21. First, switch the valve on site. Open the external supply valve 19, and close the first, second and third flushing valves 13, 14 and 15. The air compressor 1 generates condensate water continuously during operation. Due to seasonal alternation and temperature change, the amount of condensate water collected varies. By observing the pressure gauge 25, adjust the water pump return valve 11 to keep the water pump outlet pressure at 0.35 MPa, and the pressure of the external circulating water entering through the water supply valve 22 at 0.25 MPa. The pressure needs to be slightly higher than the circulating water pressure, which is the prerequisite for recovery.

[0045] (5) Soft water is recovered to the air separation water cooling tower 21, and has two values. First, the soft water replenishes the circulating water and reduces the content of calcium and magnesium impurities in the water level at the bottom of the air separation water cooling tower 21, thereby avoiding the blockage of the system pipeline. This is because, during the cooling process of the circulating water in the air separation water cooling tower 21, there is concentration and precipitation of calcium and magnesium ions. Second, the soft water is mixed with the circulating water and returned to the circulating water pool for comprehensive utilization.

[0046] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt the conventional types in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the contents not described in detail in the specification belong to the prior art known by the person skilled in the art.

[0047] The above is only a preferred embodiment of the utility model, and does not limit other forms of the utility model. Any person skilled in the art can change or modify the above disclosed technical content into equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiments still belong to the protection scope of the technical scheme of the utility model.

Claims

1. An air compressor condensate recovery line, comprising: The utility model provides an air separation water cooling tower, including air compressor, air compressor inside is provided with primary impeller, secondary impeller and tertiary impeller, and air compressor one side leads out primary drain pipe, secondary drain pipe and tertiary drain pipe respectively, and primary drain pipe, secondary drain pipe and tertiary drain pipe are connected to water tank, and water tank is provided with electromagnetic liquid level meter, and water tank bottom one side leads out and is connected to air separation water cooling tower with water outlet pipe, and water outlet pipe is provided with centrifugal water pump, water outlet check valve, pressure gauge, external supply valve and external supply check valve in proper order, and water pump backflow pipe is connected to water tank top one side with water outlet pipe leading out, and water outlet pipe leads out primary flushing pipe, secondary flushing pipe and tertiary flushing pipe, and primary flushing pipe, secondary flushing pipe and tertiary flushing pipe are divided into two roads and are connected to primary impeller, secondary impeller and tertiary impeller upper and lower sides respectively.

2. An air compressor condensate recovery line according to claim 1, wherein, The primary drain pipe, the secondary drain pipe and the tertiary drain pipe are respectively provided with a primary drain valve, a secondary drain valve and a tertiary drain valve.

3. An air compressor condensate recovery line according to claim 1, wherein, The water pump backflow pipe is provided with a water pump backflow valve.

4. An air compressor condensate recovery line according to claim 1, wherein, The water pump backflow pipe is connected between the water outlet check valve and the pressure gauge on the water outlet pipe.

5. An air compressor condensate recovery line according to claim 1 wherein, The primary flushing pipe, the secondary flushing pipe and the tertiary flushing pipe are connected between the pressure gauge and the external supply valve on the water outlet pipe.

6. An air compressor condensate recovery line according to claim 1 wherein, The primary flushing pipe, the secondary flushing pipe and the tertiary flushing pipe are respectively provided with a primary flushing valve, a secondary flushing valve and a tertiary flushing valve.

7. An air compressor condensate recovery line according to claim 1 wherein, The water outlet pipe is connected with a water supplement pipe at the end, and the water supplement pipe is provided with a water supplement valve and a filter.

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