Vapor compression condensate negative pressure drainage system

Abstract

The invention discloses a steam compression condensate negative pressure drainage system, and relates to the technical field of steam compressors, the steam compression condensate negative pressure drainage system is characterized in that one end of the lower part of a steam compressor is connected with a liquid conveying pipe, the end part of the liquid conveying pipe is provided with a first valve body, one end of the first valve body is connected with a liquid inlet pipe, and the lower end of the liquid inlet pipe is fixedly provided with a liquid storage tank; the liquid discharging assembly is arranged at one end of the liquid storage tank and comprises a water collecting tank, a ball valve, a negative pressure pipe, a three-way connector, an auxiliary pipe, a second valve body and a negative pressure tank. According to the steam compression condensate negative-pressure drainage system, through the arrangement of the drainage assembly, after condensate in a steam compressor flows into a liquid storage tank through a liquid conveying pipe, a first valve body and a liquid inlet pipe, condensate water can be gathered on the periphery of the lower end of a negative-pressure pipe through a water collecting tank, so that the efficiency of subsequent extraction is improved, and in the process, the condensate water in the negative-pressure pipe can be recycled. And the condensate water is guided through the inclined first guide plate and the inclined second guide plate, so that the gathering effect is further improved.

Description

Technical Field

[0001] This invention relates to the field of steam compressor technology, specifically to a negative pressure drainage system for steam compression condensate. Background Technology

[0002] DMF is an abbreviation for N,N-dimethylformamide, with the chemical formula C3H7NO. It is a colorless and transparent liquid, mainly used as a solvent in chemical and pharmaceutical industries. In wastewater treatment, it requires special processes (such as extraction and distillation) to remove it. MVR, or Mechanical Vapor Recompression, is a technology that uses a compressor to pressurize and heat low-temperature vapor, recycling its latent heat to achieve energy savings.

[0003] MVR distillation is typically used in the treatment of DMF wastewater solutions. A steam compressor is used to compress steam and heat the circulation. During the circulation process, some of the steam will liquefy and accumulate at the bottom of the compressor, and then automatically flow into the condensate tank by gravity.

[0004] Currently, the common practice for extracting condensate from the condensate tank is to use a centrifugal pump. This requires an additional centrifugal pump, but the pump is mostly shut down and only restarted when a certain amount of condensate accumulates in the tank. As a result, its utilization rate is low, leading to increased costs. Summary of the Invention

[0005] The purpose of this invention is to provide a negative pressure drainage system for vapor compression condensate to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a vapor compression condensate negative pressure drainage system, comprising a vapor compressor with a liquid delivery pipe connected to one end of the lower part, and a first valve body provided at the end of the liquid delivery pipe. One end of the first valve body is connected to an inlet pipe, and a storage tank is fixed to the lower end of the inlet pipe. A drainage assembly is located at one end of the storage tank, and the drainage assembly includes a water collection tank, a ball valve, a negative pressure pipe, a tee connector, an auxiliary pipe, a second valve body, and a negative pressure tank. A water collection tank is located at one bottom end of the storage tank, and a ball valve is located on one side of the water collection tank. A negative pressure pipe is fixed to the top of one end of the storage tank, and a tee connector is connected to the upper part of the negative pressure pipe. An auxiliary pipe is connected to one side of the tee connector and is connected to the interior of the storage tank. A second valve body is located at the top of the auxiliary pipe, and the upper part of the second valve body is connected to the negative pressure tank via a pipe.

[0007] Furthermore, the lower end face of the negative pressure pipe is inclined, and the negative pressure pipe abuts against the water collection tank.

[0008] Furthermore, the bottom of the liquid storage tank is fixed with a support, and there are two supports.

[0009] Furthermore, a first guide plate is installed at one end of the interior of the liquid storage tank, and the top of the first guide plate is inclined, and the width of one end of the first guide plate is the same as the width of the water collection tank.

[0010] Furthermore, a second guide plate is fixed to the other end of the interior of the liquid storage tank, and the top of the second guide plate is inclined, and the width of one end of the second guide plate is the same as the width of the water collection tank.

[0011] Furthermore, an observation component is provided at one end of the outer side of the storage tank, and a liquid level sensor is installed at the other end of the outer side of the storage tank. The observation component includes a first connecting pipe and a detection cylinder. The first connecting pipe is installed on one side of the water collection tank, and a detection cylinder is fixed at one end of the first connecting pipe.

[0012] Furthermore, the observation component also includes an observation window and an indicator float. The observation window is located on one side of the detection cylinder, and the indicator float is slidably connected inside the detection cylinder.

[0013] Furthermore, the observation component also includes a second connecting pipe, which is connected to one side of the upper end of the detection cylinder and is fixedly connected to the storage tank.

[0014] This invention provides a negative pressure drainage system for vapor compression condensate, which has the following advantages: 1. This invention, through the arrangement of the drainage component, allows the condensate inside the steam compressor to flow into the storage tank via the delivery pipe, the first valve body, and the inlet pipe. The condensate is then collected at the lower outer periphery of the negative pressure pipe using a water collection tank, thereby improving the efficiency of subsequent extraction. During this process, the condensate is guided by the inclined first and second guide plates, further enhancing the collection effect. Simultaneously, an auxiliary pipe assists in the extraction, and the second valve body is connected to the existing negative pressure tank via a pipeline. Therefore, no additional pump is required. Compared to existing equipment, this application reduces the need for a water pump, saving costs. Furthermore, the second valve body allows control of the solution volume and pressure within the storage tank, ensuring stable operation of the device. Finally, the waste liquid can be discharged through the bottom ball valve, preventing waste liquid residue. 2. This invention utilizes a liquid level sensor. When the liquid level sensor detects that the water level in the storage tank has reached a specified position, the controller can activate the second valve to promptly drain the water from the storage tank. During use, since the two ends of the detection cylinder are connected to the water collection tank and the storage tank via the first and second connecting pipes, the pressure between the detection cylinder and the storage tank can be balanced. The condensate level inside the detection cylinder will then match the water level in the storage tank, and the indicator float will be a prominent red color. Therefore, by observing the position of the indicator float through the observation window, the water level in the storage tank can be quickly determined, allowing for verification of the liquid level sensor's proper functioning and ensuring stable equipment operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a vapor compression condensate negative pressure drainage system according to the present invention; Figure 2 This is a three-dimensional structural diagram of the liquid storage pipe of a vapor compression condensate negative pressure drainage system according to the present invention; Figure 3 This is a bottom view of the liquid storage pipe structure of a vapor compression condensate negative pressure drainage system according to the present invention; Figure 4 This is a schematic diagram of the internal structure of the storage tank of a vapor compression condensate negative pressure drainage system according to the present invention; Figure 5 This is a schematic diagram of the internal structure of the detection cylinder of a vapor compression condensate negative pressure drainage system according to the present invention; Figure 6 This is a flowchart of a vapor compression condensate negative pressure drainage system according to the present invention.

[0016] In the diagram: 1. Steam compressor; 2. Infusion pipe; 3. First valve body; 4. Inlet pipe; 5. Storage tank; 6. Support; 7. Drainage assembly; 701. Water collection tank; 702. Ball valve; 703. Negative pressure pipe; 704. T-connector; 705. Auxiliary pipe; 706. Second valve body; 707. Negative pressure tank; 8. First guide plate; 9. Second guide plate; 10. Observation assembly; 1001. First connecting pipe; 1002. Detection cylinder; 1003. Observation window; 1004. Indicating float; 1005. Second connecting pipe; 11. Liquid level sensor. Detailed Implementation

[0017] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0018] like Figures 1 to 4As shown, a negative pressure drainage system for vapor compressor condensate includes a vapor compressor 1 and a drainage assembly 7. One end of the lower part of the vapor compressor 1 is connected to a delivery pipe 2, and a first valve body 3 is installed at the end of the delivery pipe 2. Since the vapor compressor 1 is a commonly used device in this field, and this application does not involve any improvement to its internal structure, its specific composition will not be described in detail. One end of the first valve body 3 is connected to an inlet pipe 4, and a storage tank 5 is fixed to the lower end of the inlet pipe 4. When the first valve body 3 is opened, the condensate accumulated at the bottom of the vapor compressor 1 will automatically flow into the storage tank 5 through the delivery pipe 2, the first valve body 3, and the inlet pipe 4 due to gravity. A support 6 is fixed to the bottom of the storage tank 5, and two supports 6 are provided. The supports 6 are used to regulate the condensate flow. The liquid tank 5 is supported, and the drainage assembly 7 is located at one end of the liquid storage tank 5. The drainage assembly 7 includes a water collection tank 701, a ball valve 702, a negative pressure pipe 703, a three-way connector 704, an auxiliary pipe 705, a second valve body 706, and a negative pressure tank 707. The bottom end of the liquid storage tank 5 is equipped with a water collection tank 701, and a ball valve 702 is installed on one side of the water collection tank 701. The final waste liquid can be discharged through the bottom ball valve 702 to avoid waste liquid residue. A negative pressure pipe 703 is fixed to the top of one end of the liquid storage tank 5, and a three-way connector 704 is connected to the upper part of the negative pressure pipe 703. The water collection tank 701 is used to collect condensate on the lower outer periphery of the negative pressure pipe 703, thereby improving the efficiency of subsequent extraction. An auxiliary pipe 705 is connected to one side of the three-way connector 704, and the auxiliary pipe 705 is used to collect condensate on the lower outer periphery of the negative pressure pipe 703. The auxiliary pipe 705 is connected to the interior of the storage tank 5. The auxiliary pipe 705 further improves the suction effect. A second valve body 706 is mounted on the top of the auxiliary pipe 705, and the upper part of the auxiliary pipe 705 is connected to a negative pressure tank 707 via a pipe. The negative pressure tank 707 provides negative pressure to suction the contents of the storage tank 5. Therefore, no additional pump is needed. Compared to existing equipment, this application reduces the need for a water pump, saving costs. Furthermore, the second valve body 706 can control the solution volume and pressure in the storage tank, ensuring stable operation of the device. Since the pressure sensor is a commonly used air pressure detection device on the tank, it is only shown in the figure and will not be specifically labeled or described in detail. The lower end face of the negative pressure pipe 703 is inclined, and the negative pressure pipe... 703 abuts against the water collection tank 701, which can improve the suction effect of the negative pressure pipe 703 and prevent blockage at the lower end. A first guide plate 8 is installed at one end of the inside of the liquid storage tank 5. The top of the first guide plate 8 is inclined and the width of one end of the first guide plate 8 is the same as the width of the water collection tank 701. The inclined first guide plate 8 guides the condensate and improves the collection effect. A second guide plate 9 is fixed at the other end of the inside of the liquid storage tank 5. The top of the second guide plate 9 is inclined and the width of one end of the second guide plate 9 is the same as the width of the water collection tank 701. The inclined second guide plate 9 guides the condensate and, together with the arc-shaped structure of the liquid storage tank 5 itself, further improves the collection effect of condensate and facilitates subsequent extraction.

[0019] like Figure 5 As shown, an observation component 10 is installed at one end of the outer side of the storage tank 5, and a liquid level sensor 11 is installed at the other end of the outer side of the storage tank 5. When the liquid level sensor 11 detects that the water in the storage tank 5 reaches a specified threshold, the controller can activate the second valve body 706 to open, thereby timely draining the water inside the storage tank 5. In addition, the model of the liquid level sensor 11 is EB2088W, and the second valve body 706 is a solenoid valve. However, the use of the liquid level sensor 11 to feed back the signal to the controller to control the opening and closing of the solenoid valve is existing technology, so this application will not describe its specific structure in detail. The observation component 10 includes a first connecting pipe 1001 and a detection cylinder 1002. The first connecting pipe 1001 is installed on one side of the water collection tank 701, and the detection cylinder 1002 is fixed at one end of the first connecting pipe 1001. The first connecting pipe 1001 is used to monitor the flow between the first connecting pipe 1001 and the storage tank 5. The observation component 10 also includes an observation window 1003 and an indicator float 1004. An observation window 1003 is installed on one side of the detection cylinder 1002, and an indicator float 1004 is slidably connected inside the detection cylinder 1002. The indicator float 1004 is bright red. By observing the position of the indicator float 1004 through the observation window 1003, the water level in the storage tank 5 can be quickly determined. The observation component 10 also includes a second connecting pipe 1005. The upper end of the detection cylinder 1002 is connected to the second connecting pipe 1005, and the second connecting pipe 1005 is fixedly connected to the storage tank 5. Since both ends of the detection cylinder 1002 are connected to the water collection tank 701 and the storage tank 5 through the first connecting pipe 1001 and the second connecting pipe 1005, the pressure between the detection cylinder 1002 and the storage tank 5 can be balanced, and the condensate water level inside the detection cylinder 1002 will be consistent with the water level in the storage tank 5.

[0020] In summary, when using this vapor compression condensate negative pressure drainage system, firstly according to... Figures 1 to 5The structure shown uses a steam compressor 1 to compress steam for heating circulation. During the circulation process, some steam liquefies and accumulates at the bottom of the steam compressor 1. Then, the first valve 3 is opened, and condensate automatically flows into the storage tank 5 via the delivery pipe 2, the first valve 3, and the inlet pipe 4 due to gravity. Next, the condensate is guided by the inclined first guide plate 8 and the second guide plate 9, causing it to flow into the collection tank 701. The collection tank 701 collects the condensate on the lower outer periphery of the negative pressure pipe 703, thereby improving the efficiency of subsequent extraction. Then, when the level sensor 11 detects that the water in the storage tank 5 has reached a designated level, the controller can activate the second valve 706 to open, promptly draining the water from the storage tank 5. Simultaneously, since the two ends of the detection cylinder 1002 are connected to the collection tank 701 and the storage tank 5 via the first connecting pipe 1001 and the second connecting pipe 1005, thus… The pressure between the detection cylinder 1002 and the storage tank 5 can be balanced, so the condensate level inside the detection cylinder 1002 will be consistent with the water level in the storage tank 5. At the same time, the indicator float 1004 will be a bright red color. Therefore, by observing the position of the indicator float 1004 through the observation window 1003, the water level in the storage tank 5 can be quickly determined, so as to check whether the liquid level sensor 11 is working properly and ensure the stable operation of the equipment. Finally, since the second valve body 706 is connected to the negative pressure tank 707, the condensate in the water collection tank 701 can be automatically extracted through the negative pressure pipe 703 and the auxiliary pipe 705 by using the air pressure difference. Therefore, there is no need to add an additional pump. Compared with the existing equipment, this application can reduce one water pump and save costs. At the same time, the second valve body 706 can control the solution volume and pressure in the storage tank to ensure the stable operation of the device. Finally, the waste liquid can be discharged through the bottom ball valve 702 to avoid waste liquid residue.

[0021] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A vapor compression condensate subatmospheric drain system comprising a vapor compressor (1) and a drain assembly (7), characterized in that, The lower end of the vapor compressor (1) is connected with a liquid delivery pipe (2), and the end of the liquid delivery pipe (2) is provided with a first valve body (3), one end of the first valve body (3) is connected with a liquid inlet pipe (4), and the lower end of the liquid inlet pipe (4) is fixed with a liquid storage tank (5), and the liquid discharge assembly (7) is arranged at one end of the liquid storage tank (5), and the liquid discharge assembly (7) comprises a water collecting tank (701), a ball valve (702), a negative pressure pipe (703), a tee joint (704), an auxiliary pipe (705), a second valve body (706) and a negative pressure tank (707), one end of the bottom of the liquid storage tank (5) is arranged with the water collecting tank (701), and one side of the water collecting tank (701) is arranged with the ball valve (702), one end of the top of the liquid storage tank (5) is fixed with the negative pressure pipe (703), and the upper end of the negative pressure pipe (703) is connected with the tee joint (704), one side of the tee joint (704) is connected with the auxiliary pipe (705), and the auxiliary pipe (705) is communicated with the inside of the liquid storage tank (5), the top of the auxiliary pipe (705) is arranged with the second valve body (706), and the upper end of the second valve body (706) is connected with the negative pressure tank (707) through a pipeline.

2. A vapor-compression condensate negative pressure drainage system according to claim 1, wherein, The lower end surface of the negative pressure pipe (703) is inclined, and the negative pressure pipe (703) abuts with the water collecting tank (701).

3. A vapor-compression condensate negative pressure drainage system according to claim 1, wherein, The bottom of the liquid storage tank (5) is fixed with a support (6), and the number of the support (6) is two.

4. A vapor-compression condensate negative pressure drainage system according to claim 1, wherein, One end of the inside of the liquid storage tank (5) is arranged with a first flow guide plate (8), the top of the first flow guide plate (8) is inclined, and the width of one end of the first flow guide plate (8) is consistent with the width of the water collecting tank (701).

5. A vapor-compression condensate negative pressure drain system according to claim 1, wherein, The other end of the inside of the liquid storage tank (5) is fixed with a second flow guide plate (9), the top of the second flow guide plate (9) is inclined, and the width of one end of the second flow guide plate (9) is consistent with the width of the water collecting tank (701).

6. A vapor-compression condensate negative pressure drain system according to claim 1, wherein, One end of the outside of the liquid storage tank (5) is provided with an observation assembly (10), and the other end of the outside of the liquid storage tank (5) is arranged with a liquid level sensor (11), the observation assembly (10) comprises a first connecting pipe (1001) and a detection cylinder (1002), one side of the water collecting tank (701) is arranged with the first connecting pipe (1001), and one end of the first connecting pipe (1001) is fixed with the detection cylinder (1002).

7. A vapor-compression sub-cooled liquid drainage system according to claim 6, wherein, The observation assembly (10) further comprises an observation window (1003) and an indicating float plate (1004), one side of the detection cylinder (1002) is arranged with the observation window (1003), and the inside of the detection cylinder (1002) is slidably connected with the indicating float plate (1004).

8. A vapor-compression condensate negative pressure drain system according to claim 7, wherein, The observation assembly (10) further comprises a second connecting pipe (1005), one side of the upper end of the detection cylinder (1002) is connected with the second connecting pipe (1005), and the second connecting pipe (1005) is fixedly connected with the liquid storage tank (5).

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