Pressurized condensate water recovery device of pre-cooler

Abstract

The utility model relates to a pre-cooler under-pressure condensate water recovery device, and belongs to the technical field of under-pressure air condensate water recovery. The device comprises a buffer water storage tank with certain pressure bearing capacity, a pressure release valve and a pressure gauge are arranged on the upper portion of the buffer water storage tank, the middle-upper portion of the buffer water storage tank is connected with a pre-cooler under-pressure condensate water discharging outlet through a first pipeline, and the lower portion of the buffer water storage tank is connected with a water storage pool through a second pipeline. The position of a port, connected with the buffer water storage tank, of the second pipeline is lower than that of a port, connected with the water storage tank, of the second pipeline, and recycled condensate water is pressed into the water storage tank through pressure in the buffer water storage tank. The device can effectively and safely collect the under-pressure condensate water of the pre-cooler, and meanwhile, the device does not need to provide energy additionally, so that the operation cost of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressurized air condensate recovery, and particularly relates to a pressurized condensate recovery device for a precooler. Background Art

[0002] The precooler is mainly used for air cooling, and uses the throttling pressure drop of the refrigerant to cool the pressurized air. Due to the decrease in temperature of the cooled pressurized air, the saturation content decreases, and a large amount of moisture will precipitate from the air and be discharged. Generally, the precipitated pressurized condensate will be directly discharged into the sewer pipe, resulting in waste of resources.

[0003] Of course, there is also a waste water recovery structure for the precooler in the prior art: for example, a waste water recovery and utilization device with the publication number of CN 202576007U, which involves the waste water recovery and utilization of a precooler and a precooling pool. It includes a drain pipe, a water pump, a reservoir, a valve, and a water outlet pipe. One end of the drain pipe is connected to the precooler and the precooling pool, and the other end is connected to the water pump. The water pump is connected to the reservoir through a pipe; the reservoir is provided with a water outlet pipe, and the water in the reservoir is transported to the water outlet pipe through the water pump; the water outlet pipe is provided with a shunt pipe, and a valve is arranged on the shunt pipe. The water recovered by the above structure can replace the water used in the tap water pipe, which not only reduces the treatment capacity of the sewage treatment plant but also reduces the operation cost, and is economical and practical.

[0004] However, this device needs to provide additional energy to drive the operation of the water pump, which will cause a certain cost for the operation of the device; at the same time, the above structure is not applicable to the recovery of pressurized condensate of the precooler. The direct external discharge of pressurized condensate has a certain danger, and the above device does not have a relevant structure for protective design against pressurized media. Summary of the Utility Model

[0005] In order to solve the problems in the prior art that the condensate recovery device of the precooler needs to provide additional energy and has no safety protection, the utility model provides a pressurized condensate recovery device for a precooler, which can effectively and safely collect the pressurized condensate of the precooler. At the same time, the device does not need to provide additional energy, reducing the operation cost of the device.

[0006] It adopts the following technical solutions:

[0007] A pressurized condensate recovery device for a precooler includes a buffer storage tank with a certain pressure-bearing capacity. A pressure relief valve and a pressure gauge are arranged on the upper part of the buffer storage tank. The middle upper part of the buffer storage tank is connected to the discharge outlet of the pressurized condensate of the precooler through a first pipe. The lower part of the buffer storage tank is connected to a reservoir through a second pipe. Among them, the port position of the second pipe connected to the buffer storage tank is lower than the port position of the second pipe connected to the reservoir, and the recovered condensate is pressed into the reservoir through the pressure in the buffer storage tank.

[0008] Further, a silencer is connected to the external discharge valve port of the pressure relief valve.

[0009] Further, a first regulating valve and a first water flow sight glass are sequentially arranged on the first pipeline along the water flow direction.

[0010] Further, a second regulating valve and a second water flow sight glass are sequentially arranged on the second pipeline along the water flow direction.

[0011] Further, a first vent valve is further arranged on the first pipeline; a second vent valve is further arranged on the second pipeline.

[0012] Further, a liquid level gauge for displaying the internal water level is arranged on the buffer storage water tank.

[0013] Further, a group of vertically arranged filter meshes are arranged in the buffer storage water tank, and the filter meshes are arranged at intervals in the injection direction of the pressurized condensed water.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows:

[0015] By arranging the buffer storage water tank and the connected pressure relief valve, the pressurized air in the condensed water is discharged externally through the pressure relief valve, and at the same time, the condensed water flows to the bottom of the buffer storage water tank. While realizing the collection of the condensed water, the pressure of the pressurized condensed water is reduced, and the use safety of the device is improved; equally importantly, the present device utilizes the pressure difference formed by the internal pressure and the external air pressure of the buffer storage water tank to force the condensed water into the storage tank, and realizes the final external discharge of the condensed water without the need to provide additional energy and power, reducing the operation cost of the device. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of a pre-cooling machine pressurized condensed water recovery device according to an embodiment of the present utility model;

[0017] Figure 2 is a schematic internal structure diagram of the buffer storage water tank in an embodiment of the present utility model.

[0018] Description of the reference numerals: 1, pre-cooling machine; 2, first regulating valve; 3, first water flow sight glass; 4, first vent valve; 5, buffer storage water tank; 6, silencer; 7, liquid level gauge; 8, second regulating valve; 9, second water flow sight glass; 10, second vent valve; 11, storage tank; 12, pressure gauge; 13, first pipeline; 14, second pipeline; 15, pressure relief valve; 16, filter mesh. Detailed Embodiment

[0019] To make the present utility model more clearly understood, the following further describes a pressurized condensate recovery device for a pre-cooling machine of the present utility model in conjunction with the accompanying drawings. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] As Figure 1 shown, a pressurized condensate recovery device for a pre-cooling machine includes a buffer storage tank 5 with a certain pressure-bearing capacity. For example, the buffer storage tank 5 can be a pressure-bearing container with certain corrosion resistance. A pressure relief valve 15 communicating with its interior and a pressure gauge 12 for detecting the internal pressure are provided at the top of the buffer storage tank 5. The middle upper part of the buffer storage tank 5 is connected to the discharge outlet of the pressurized condensate of the pre-cooling machine 1 through a first pipeline 13. The pressurized condensate discharged from the pre-cooling machine 1 contains not only liquid water and tiny droplets but also pressurized air. The discharge outlet of the pressurized condensate of the pre-cooling machine 1 is located at its lower part. Considering that the first pipeline 13 needs to bear a certain pressure medium, therefore, the first pipeline 13 is preferably a rigid pipeline.

[0021] The lower part of the buffer storage tank 5 is connected to a reservoir 11 through a second pipeline 14. Among them, the port position of the second pipeline 14 connected to the buffer storage tank 5 is lower than the port position of the second pipeline 14 connected to the reservoir 11. The pressurized condensate discharged from the pre-cooling machine 1 enters the buffer storage tank 5 through the first pipeline 13. Since the pressure relief valve 15 has a set pressure relief threshold, when the air in the pressurized condensate exceeds the pressure relief value of the pressure relief valve 15, part of the air is discharged from the pressure relief valve 15 to reduce the internal pressure of the buffer storage tank 5 until it is lower than the pressure relief threshold of the pressure relief valve 15. At the same time, the condensate flows to the bottom of the buffer storage tank 5 under the influence of its own weight. At this time, there is a certain pressure gas in the upper container of the buffer storage tank 5. Under the action of this pressure gas, the condensate at the bottom of the buffer storage tank 5 is pressed into the second pipeline 14 and discharged into the reservoir 11. In this process, without any external power source, the collected condensate can be discharged into the reservoir 11. In addition, due to the provided buffer storage tank 5 and pressure relief valve 15, it can ensure that the entire condensate recovery process is in a relatively safe environment.

[0022] In some embodiments, a silencer 6 is connected to the external discharge valve port of the pressure relief valve 15. By providing the silencer 6, the noise of air discharge can be reduced. The first pipeline 13 is successively provided with a first regulating valve 2, a first water flow sight glass 3 and a first vent valve 4 along the water flow direction; the second pipeline 14 is successively provided with a second vent valve 10, a second regulating valve 8 and a second water flow sight glass 9 along the water flow direction. The first and second water flow sight glasses can be used to observe the flow state of the condensed water in the first and second pipelines in real time; the first and second regulating valves can be used to adjust the liquid flow rate in the corresponding pipelines; the first and second vent valves can be used to empty the condensed liquid in the first and second pipelines. Combining with the cut-off function of the first and second regulating valves, the inlet and outlet paths of the buffer storage tank 5 can be cut off, which is convenient for the maintenance and repair of this condensed water recovery device. In addition, a liquid level gauge 7 for displaying the internal water level is provided on the buffer storage tank 5.

[0023] Combined with Figure 2 As shown, in some other embodiments, a group of vertically arranged filter meshes 16 are provided in the buffer storage tank 5. The filter meshes 16 are arranged at intervals in the injection direction of the pressurized condensed water. The mesh size of the filter meshes 16 can allow the pressurized gas to pass through smoothly while capturing the tiny liquid droplets in the air on the filter meshes 16 as much as possible. Considering the influence of factors such as wind resistance and cost, the mesh size is preferably 1-4 mm. The small liquid droplets condensed on the filter meshes 16 flow down along the grid lines of the filter meshes 16 to the bottom of the buffer storage tank 5 under the action of their own weight, which can further improve the condensed water recovery efficiency of the precooler.

[0024] The working process of this device:

[0025] After the precooler 1 is started, the high-pressure air cools down in the precooler 1. The saturated content of water decreases due to the decrease in the temperature of the air. Therefore, a large amount of water will be separated out from the high-pressure air to become pressurized condensed water.

[0026] The separated pressurized condensed water is not allowed to enter the next process and needs to be discharged. The pressurized condensed water is discharged through the condensed water discharge outlet of the precooler 1, and then enters the upper middle part of the buffer storage tank 5 through the first pipeline 13. At the same time, the flow rate is adjusted by the first regulating valve 2 on the first pipeline 13, and the flow state of the pressurized condensed water can be observed through the first water flow sight glass.

[0027] After the pressurized condensed water enters the buffer storage tank 5, the gas in the pressurized condensed water is discharged through the top pressure relief valve 15, and the liquid part flows into the bottom.

[0028] The second pipeline 14 provided in the middle and lower parts of the buffer storage tank 5 is connected to the upper middle part of the storage tank 11. The condensed water is forced to flow into the storage tank through the pressure difference. At the same time, the flow rate is adjusted by the second regulating valve 8 on the second pipeline 14, and the flow state is observed through the second water flow sight glass 9.

[0029] The above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And these obvious changes or modifications derived from the essential spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A pressure-bearing condensate recovery device for a pre-cooling machine, characterized in that: It includes a buffer storage water tank (5) with a certain pressure-bearing capacity. A pressure relief valve (15) and a pressure gauge (12) are provided at the upper part of the buffer storage water tank (5). The middle-upper part of the buffer storage water tank (5) is connected to the discharge outlet of the pressurized condensate of the precooler (1) through a first pipeline (13). The lower part of the buffer storage water tank (5) is connected to a reservoir (11) through a second pipeline (14). Among them, the port position where the second pipeline (14) is connected to the buffer storage water tank (5) is lower than the port position where the second pipeline (14) is connected to the reservoir (11). The recovered condensate is pressed into the reservoir (11) by the pressure in the buffer storage water tank (5).

2. The pressure-bearing condensate recovery device for a pre-cooling machine according to claim 1, wherein: A silencer (6) is connected to the outer discharge valve port of the pressure relief valve (15).

3. A pressurized condensate recovery device for a precooler, according to claim 2, characterized in that: A first regulating valve (2) and a first water flow sight glass (3) are successively arranged on the first pipeline (13) along the water flow direction.

4. A pressurized condensate recovery device for a precooler, according to claim 3, characterized in that: A second regulating valve (8) and a second water flow sight glass (9) are successively arranged on the second pipeline (14) along the water flow direction.

5. A pressurized condensate recovery device for a precooler, according to claim 4, wherein: A first vent valve (4) is further provided on the first pipeline (13); a second vent valve (10) is further provided on the second pipeline (14).

6. The pressure-bearing condensate recovery device for a precooling machine according to claim 1, wherein: A liquid level gauge (7) for displaying the internal water level is provided on the buffer storage water tank (5).

7. A pressurized condensate recovery device for a precooler, according to claim 1, characterized in that: A group of vertically arranged filter meshes (16) are provided in the buffer storage water tank (5), and the filter meshes (16) are arranged at intervals in the injection direction of the pressurized condensate.

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