Organic working fluid non-condensable gas discharge device and method

Abstract

The application provides an organic working medium non-condensable gas discharging device and method, relates to the technical field of organic Rankine cycle power generation, and comprises a condenser, a booster tank and a gas lock tank. The hot well of the condenser is connected with the bottom of the booster tank through an outlet liquid pneumatic valve, is connected with the booster tank through a working medium pump and an inlet liquid pneumatic valve, and the upper portion thereof is connected with the booster tank through a gas balance pipe provided with a check valve. The top of the booster tank is connected with the gas lock tank through an inlet gas pneumatic valve, the top of the gas lock tank is connected with the atmosphere through an exhaust pneumatic valve and an exhaust check valve. A pressure transmitter is installed on the condenser, and a liquid level transmitter is installed on the booster tank. The pressure transmitter and the liquid level transmitter respectively monitor the pressure value of the condenser and the liquid level value of the booster tank, and the opening and closing of the inlet liquid pneumatic valve, the outlet liquid pneumatic valve, the inlet gas pneumatic valve and the exhaust pneumatic valve are respectively controlled according to the pressure value and the liquid level value, so that the non-condensable gas in the condenser is discharged to the atmosphere. The non-condensable gas in the condenser can be effectively discharged, and the output efficiency of the expander is ensured.

Description

Technical Field

[0001] This invention relates to the field of organic Rankine cycle power generation technology, and in particular to a device and method for venting non-condensable gases from organic working fluids. Background Technology

[0002] Organic Rankine cycle power generation technology is based on the Rankine cycle, using low-boiling-point organic matter as the working fluid. It absorbs heat from a relatively low-temperature heat source, then expands and performs work to drive a generator. Specifically, the low-temperature, low-pressure working fluid is pressurized by a working fluid pump and enters a heat exchanger. There, it absorbs heat from the heat source and becomes a high-temperature, high-pressure liquid (increasing its internal energy). It then enters an expander to expand and perform work, converting some of its internal energy into mechanical energy. Since the expander is connected to a generator, this mechanical energy is converted into electrical energy. After performing work, the working fluid becomes low-pressure vapor and enters a condenser. In the condenser, it releases some heat and becomes a low-temperature, low-pressure liquid again, re-entering the pump for pressurization, thus starting the next cycle.

[0003] An organic working fluid non-condensable gas venting device refers to the device that vents non-condensable gases from the condenser in an organic Rankine cycle power generation system. During organic Rankine cycle power generation, non-condensable gases generated due to chemical changes, incomplete vacuuming, or other reasons can enter the condenser, leading to an increase in condenser operating pressure. This increase in back pressure reduces the expander's output power. Furthermore, the non-condensable gases may contain oxygen, causing corrosion of heat exchange components.

[0004] Therefore, timely removal of non-condensable gases is crucial for the stable operation and improved economic efficiency of organic Rankine cycle power generation systems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an organic working fluid non-condensable gas discharge device and method, which effectively discharges non-condensable gases generated during organic Rankine cycle power generation, ensuring the stable and efficient operation of the power generation system.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] An organic working fluid non-condensable gas discharge device includes: a pressurization tank and a gaslock tank connected in sequence with a condenser;

[0008] The hot well of the condenser is connected to the bottom of the pressurization tank via a liquid outlet pneumatic valve. The hot well of the condenser is also connected to the pressurization tank via a working fluid pump and a liquid inlet pneumatic valve. The upper part of the condenser is connected to the pressurization tank via a gas balance pipe with a check valve. The top of the pressurization tank is connected to the airlock via an air inlet pneumatic valve. The top of the airlock is connected to the atmosphere via an exhaust pneumatic valve and an exhaust check valve.

[0009] A pressure transmitter is installed on the condenser, and a level transmitter is installed on the booster tank.

[0010] The pressure transmitter and the level transmitter monitor the pressure value in the condenser and the level value in the booster tank, respectively. Based on the pressure value and the level value, they control the opening and closing of the liquid inlet pneumatic valve, the liquid outlet pneumatic valve, the air inlet pneumatic valve, and the exhaust pneumatic valve, respectively, to discharge the non-condensable gas in the condenser to the atmosphere.

[0011] As a further improvement of the present invention, a programmable logic controller is also included;

[0012] The inlet pneumatic valve, the outlet pneumatic valve, the air inlet pneumatic valve, the exhaust pneumatic valve, the pressure transmitter, and the level transmitter are all connected to the programmable logic controller.

[0013] The programmable logic controller acquires the pressure value measured by the pressure transmitter and the liquid level value measured by the liquid level transmitter in real time, and controls the opening and closing of the liquid inlet pneumatic valve, the liquid outlet pneumatic valve, the air inlet pneumatic valve, and the exhaust pneumatic valve according to the pressure value and the liquid level value.

[0014] As a further improvement of the present invention, the hot well at the bottom of the condenser is connected to the bottom of the pressure tank via a liquid outlet pneumatic valve, the hot well at the bottom of the condenser is connected to the upper part of the pressure tank via a working fluid pump and a liquid inlet pneumatic valve, and the upper part of the condenser is connected to the upper part of the pressure tank via a gas balance pipe with a check valve.

[0015] As a further improvement of the present invention, the top of the booster tank is connected to the bottom of the airlock tank via an air intake pneumatic valve.

[0016] As a further improvement of the present invention, the condenser is provided with a condenser exhaust port at the top; the pressure tank is provided with a pressure tank air inlet and a pressure tank liquid inlet at the top, a pressure tank exhaust port at the top, and a pressure tank liquid outlet at the bottom; the airlock is provided with an airlock exhaust port at the top and an airlock air inlet at the bottom.

[0017] The condenser exhaust port is connected to the pressurization tank inlet via a gas balance pipe with a check valve. The pressurization tank liquid inlet is connected to the condenser hot well via the liquid inlet pneumatic valve and the working fluid pump. The pressurization tank outlet is connected to the condenser hot well via the liquid outlet pneumatic valve. The pressurization tank exhaust port is connected to the airlock tank inlet via the air inlet pneumatic valve. The airlock tank exhaust port is connected to the atmosphere via the exhaust pneumatic valve and the exhaust check valve.

[0018] The present invention also provides a method for venting non-condensable gases from an organic working fluid, comprising the steps of:

[0019] The pressure threshold of the condenser and the liquid level threshold of the booster tank are preset; the pressure value measured by the pressure transmitter and the liquid level value measured by the liquid level transmitter are continuously acquired.

[0020] The non-condensable gas (containing a small amount of working fluid vapor) in the condenser enters the booster tank through the gas balance pipe equipped with a check valve, and maintains pressure balance with the condenser.

[0021] As non-condensable gases (containing a small amount of working fluid vapor) accumulate in the condenser, the condenser pressure will continuously increase. When the pressure value measured by the pressure transmitter reaches the pressure threshold, the inlet pneumatic valve and the outlet pneumatic valve are opened, and the outlet pneumatic valve and the exhaust pneumatic valve are closed.

[0022] The working fluid liquid in the condenser hot well is fed into the pressurization tank by the working fluid pump. The working fluid vapor in the pressurization tank is pressurized, cooled and liquefied and mixed with the incoming working fluid liquid. The non-condensable gas is compressed into the airlock tank as the liquid level in the pressurization tank rises.

[0023] When the liquid level value measured by the level transmitter reaches the liquid level threshold, the inlet pneumatic valve and the air inlet pneumatic valve are closed. The outlet pneumatic valve is opened, and the liquid working fluid in the pressurization tank is discharged by gravity to the hot well of the condenser under the action of pressure difference; the exhaust pneumatic valve is opened, and the non-condensable gas in the airlock is discharged to the atmosphere.

[0024] As a further improvement of the present invention, the liquid inlet pneumatic valve, the liquid outlet pneumatic valve, the air inlet pneumatic valve, the exhaust pneumatic valve, the pressure transmitter and the liquid level transmitter are all connected to the programmable logic controller;

[0025] The programmable logic controller acquires the pressure value measured by the pressure transmitter and the liquid level value measured by the liquid level transmitter in real time.

[0026] When the pressure value measured by the pressure transmitter reaches the pressure threshold, the programmable logic controller controls the liquid inlet pneumatic valve and the air inlet pneumatic valve to open, and controls the liquid outlet pneumatic valve and the exhaust pneumatic valve to close.

[0027] When the liquid level value measured by the liquid level transmitter reaches the preset liquid level threshold, the programmable logic controller controls the liquid inlet pneumatic valve and the air inlet pneumatic valve to close, and controls the liquid outlet pneumatic valve and the exhaust pneumatic valve to open.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] This invention achieves pressure detection in the condenser by connecting a pressure booster tank to the condenser and installing a pressure transmitter. When the pressure in the condenser rises and affects the output power of the expander, the non-condensable gas in the condenser is discharged, effectively eliminating the non-condensable gas generated during the production process and ensuring the pressure in the condenser tube and the output power of the expander.

[0030] This invention connects an airlock to a pressurization tank, allowing non-condensable gases to first be discharged into the airlock and then discharged into the atmosphere. The airlock effectively isolates the gas from the air.

[0031] The present invention also prevents air from entering the device and prevents non-condensable gases or working liquids from returning to the condenser at the condenser exhaust port by installing an exhaust check valve outside the airlock tank exhaust port and a check valve outside the pressurizer inlet port, thereby maintaining the normal and stable operation of the device.

[0032] This invention monitors the liquid level in the booster tank by setting a level transmitter. When the liquid level in the booster tank reaches the preset level value, it indicates that all the non-condensable gases (including some working fluid vapor) entering the booster tank from the condenser have been discharged to the airlock. This allows the booster tank to discharge the working fluid liquid into the condenser hot well, enabling the working fluid liquid to be recycled and reused, reducing the waste of the working fluid. At the same time, this invention enables the organic working fluid non-condensable gas discharge device to operate continuously in a cycle.

[0033] This invention automates and intelligently processes the exhaust process by incorporating a programmable logic controller (PLC). This not only makes the process faster and more convenient but also reduces labor costs associated with maintenance. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of an organic working fluid non-condensable gas discharge device according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of a method for emitting non-condensable organic working fluid gas according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Condenser; 101. Condenser outlet; 102. Condenser inlet; 103. Pressure transmitter; 104. Temperature transmitter; 105. Condenser exhaust port; 20. Booster tank; 201. Booster tank outlet; 202. Booster tank inlet; 203. Booster tank air inlet; 204. Booster tank exhaust port; 205. Level transmitter; 30. Airlock; 301. Airlock inlet; 302. Airlock exhaust port; 401. With check valve; 402. Exhaust check valve; 501. Inlet pneumatic valve; 502. Outlet pneumatic valve; 503. Inlet pneumatic valve; 504. Exhaust pneumatic valve; 60. Working fluid pump; 70. Programmable logic controller (PLC). Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The present invention will now be described in further detail with reference to the accompanying drawings:

[0042] like Figure 1 As shown, the present invention provides an organic working fluid non-condensable gas discharge device, comprising: a pressurization tank 20 and an airlock tank 30 connected in sequence to a condenser 10;

[0043] The hot well of the condenser 10 is connected to the bottom pipeline of the pressure tank 20 via the liquid outlet pneumatic valve 502. The hot well of the condenser 10 is also connected to the pipeline of the pressure tank 20 via the working fluid pump 60 and the liquid inlet pneumatic valve 501. The upper part of the condenser 10 is connected to the pipeline of the pressure tank 20 via the gas balance pipe with the check valve 401. The top of the pressure tank 20 is connected to the pipeline of the airlock 30 via the air inlet pneumatic valve 503. The top of the airlock 30 is connected to the atmospheric pipeline via the exhaust pneumatic valve 504 and the exhaust check valve 402.

[0044] A pressure transmitter 103 is installed on the condenser 10, and a level transmitter 205 is installed on the booster tank 20.

[0045] The inlet pneumatic valve 501, the outlet pneumatic valve 502, the inlet pneumatic valve 503, the exhaust pneumatic valve 504, the pressure transmitter 103, and the level transmitter 205 are all connected to the programmable logic controller 70.

[0046] The pressure threshold of the condenser 10 and the liquid level threshold of the booster tank 20 are preset. The pressure transmitter 103 and the liquid level transmitter 205 continuously monitor the pressure value in the condenser 10 and the liquid level value in the booster tank 20 and send them to the programmable logic controller 70, respectively.

[0047] When the pressure value measured by the pressure transmitter 103 reaches the pressure threshold, the programmable logic controller 70 controls the liquid inlet pneumatic valve 501 and the air inlet pneumatic valve 503 to open, and controls the liquid outlet pneumatic valve 502 and the exhaust pneumatic valve 504 to close; the working fluid liquid in the hot well of the condenser 10 is input into the pressurization tank 20 via the working fluid pump 60. The working fluid vapor in the pressurization tank 20 is pressurized, cooled and liquefied, and mixed with the working fluid liquid entering the pressurization tank 20. The non-condensable gas is compressed into the airlock tank 30 as the liquid level in the pressurization tank 20 rises.

[0048] When the liquid level value measured by the liquid level transmitter 205 reaches the preset liquid level threshold, the programmable logic controller 70 controls the liquid inlet pneumatic valve 501 and the air inlet pneumatic valve 503 to close, and controls the liquid outlet pneumatic valve 502 and the exhaust pneumatic valve 504 to open; the liquid working fluid in the booster tank 20 flows out naturally into the hot well of the condenser 10 under the action of pressure difference, and the non-condensable gas in the airlock tank 30 is discharged into the atmosphere;

[0049] Enter the next exhaust cycle.

[0050] in,

[0051] Preferably, the hot well at the bottom of the condenser 10 is connected to the bottom of the pressure tank 20 via a liquid outlet pneumatic valve 502, facilitating the rapid and complete discharge of the working fluid liquid in the pressure tank 20. The hot well at the bottom of the condenser 10 is connected to the upper part of the pressure tank 20 via a working fluid pump 60 and a liquid inlet pneumatic valve 501, facilitating the input of the working fluid liquid from the hot well at the bottom of the condenser 10 into the pressure tank 20. The upper part of the condenser 10 is connected to the upper part of the pressure tank 20 via a gas balance pipe with a check valve 401, facilitating the entry of non-condensable gases (including some working fluid vapor) from the condenser 10 into the pressure tank 20. The pressure tank is connected to the lower part of the airlock via an air inlet pneumatic valve, and the non-condensable gases are discharged from the upper end of the pressure tank 20 to the airlock 30. The above structure improves the overall efficiency of discharging non-condensable gases from the condenser 10.

[0052] Furthermore,

[0053] The top of the booster tank 20 is connected to the bottom of the airlock tank 30 via the air intake pneumatic valve 503, so that non-condensable gas enters from the bottom of the airlock tank 30 and exits from the top, shortening the travel of non-condensable gas in the airlock tank 30 and improving the exhaust efficiency of the airlock tank 30.

[0054] Specifically,

[0055] like Figure 1 As shown, the condenser 10 has a condenser exhaust port 105 at the top and a condenser liquid outlet 101 and a condenser liquid inlet 102 at the bottom; the booster tank 20 has a booster tank air inlet 203 and a booster tank liquid inlet 202 at the top, a booster tank exhaust port 204 at the top, and a booster tank liquid outlet 201 at the bottom; the airlock tank 30 has an airlock tank exhaust port 302 at the top and an airlock tank air inlet 301 at the bottom.

[0056] The condenser exhaust port 105 is connected to the pressurization tank inlet 203 via a check valve 401. The condenser liquid outlet 101 is connected to the pressurization tank inlet 202 via a working fluid pump 60 and a liquid inlet pneumatic valve 501. The condenser liquid inlet 102 is connected to the pressurization tank outlet 201 via a liquid outlet pneumatic valve 502. The pressurization tank inlet 202 is connected to the hot well of the condenser 10 via a liquid inlet pneumatic valve 501 and a working fluid pump 60. The pressurization tank outlet 201 is connected to the hot well of the condenser 10 via a liquid outlet pneumatic valve 502. The pressurization tank exhaust port 204 is connected to the airlock tank inlet 301 via an air inlet pneumatic valve 503. The airlock tank exhaust port 302 is connected to the atmosphere via an exhaust pneumatic valve 504 and an exhaust check valve 402.

[0057] like Figure 2 As shown, the method for discharging non-condensable gases from organic working fluids according to the present invention includes the following steps:

[0058] S1. Preset the pressure threshold of condenser 10 and the liquid level threshold of booster tank 20; continuously acquire the pressure value measured by the pressure transmitter and the liquid level value measured by the liquid level transmitter.

[0059] S2. Through the gas balance pipe with a check valve, the non-condensable gas (containing a small amount of working fluid vapor) in the condenser enters the booster tank to maintain pressure balance with the condenser.

[0060] in,

[0061] Both pressure transmitter 103 and level transmitter 205 are connected to programmable logic controller 70.

[0062] The pressure transmitter 103 sends the measured pressure value to the programmable logic controller 70 in real time, and the level transmitter 205 also sends the measured level value to the programmable logic controller 70 in real time.

[0063] S3. As non-condensable gases accumulate in the condenser, the condenser pressure will continue to rise. When the pressure value measured by the pressure transmitter 103 reaches the pressure threshold, the inlet pneumatic valve 501 and the inlet pneumatic valve 503 are opened, and the outlet pneumatic valve 502 and the exhaust pneumatic valve 504 are closed.

[0064] in,

[0065] The inlet pneumatic valve 501, the outlet pneumatic valve 502, the inlet pneumatic valve 503, and the exhaust pneumatic valve 504 are all connected to the programmable logic controller 70.

[0066] The programmable logic controller 70 controls the opening of the liquid inlet pneumatic valve 501 and the air inlet pneumatic valve 503, and controls the closing of the liquid outlet pneumatic valve 502 and the exhaust pneumatic valve 504.

[0067] S4. The working fluid liquid in the condenser hot well is input into the pressurization tank via the working fluid pump. The working fluid vapor in the pressurization tank is pressurized, cooled and liquefied, and mixed with the incoming working fluid liquid. The non-condensable gas is compressed into the airlock tank as the liquid level in the pressurization tank rises.

[0068] in,

[0069] As the amount of working fluid in the pressurization tank 20 increases, the working fluid pushes upward to compress the space occupied by the non-condensable gas, causing the non-condensable gas to be squeezed into the airlock tank 30.

[0070] S5. When the liquid level value measured by the liquid level transmitter 205 reaches the liquid level threshold, close the inlet pneumatic valve 501 and the air inlet pneumatic valve 503, and open the outlet pneumatic valve 502 and the exhaust pneumatic valve 504.

[0071] in,

[0072] The programmable logic controller 70 controls the liquid inlet pneumatic valve 501 and the air inlet pneumatic valve 503 to close, and controls the liquid outlet pneumatic valve 502 and the exhaust pneumatic valve 504 to open.

[0073] S6. The liquid working fluid in the booster tank 20 is discharged by gravity to the hot well of the condenser under the action of pressure difference; the non-condensable gas in the airlock tank 30 is discharged to the atmosphere.

[0074] in,

[0075] Ensure that all liquid working fluid in the booster tank 20 is discharged into the hot well of the condenser 10 to ensure the normal operation of the device.

[0076] Example:

[0077] Basic data for the engineering example: The working fluid in the organic Rankine cycle is isopentane. Condenser 10 contains six gases: isopentane, methane, ethane, propane, butane, and nitrogen. The normal pressure of the working fluid in condenser 10 is 0.9 bar, and the temperature is 20°C. The volume ratio of the booster tank 20 to the airlock tank 30 is 3:1.

[0078] This invention provides a device and method for venting non-condensable gases from organic working fluids. The non-condensable gases (containing a small amount of working fluid vapor) in the condenser 10 enter the pressure tank 20 through a gas balance pipe equipped with a check valve 201, and maintain pressure balance with the condenser to vent the pressure tank 20.

[0079] include:

[0080] When the programmable logic controller 70 detects through the pressure transmitter 103 that the pressure of the condenser 10 has reached the set value of 1 bar, the programmable logic controller 70 issues a command to automatically open the liquid inlet pneumatic valve 501 and the air inlet pneumatic valve 503, and close the liquid outlet pneumatic valve 502. Liquid isopentane enters the pressurization tank 20 from the top, pressurizing and cooling the isopentane and non-condensable gases such as methane, ethane, propane, butane, and nitrogen in the pressurization tank 20. The isopentane vapor is liquefied and recovered. When the pressurization tank 20 is full of liquid isopentane, all the non-condensable gases are compressed into the airlock 30. Based on the pressure of the pressurization tank 20 and the airlock 30... As can be seen from the volume ratio, the gas pressure inside the airlock tank 30 reaches 3 bar. At this time, the programmable logic controller 70 issues a command to close the inlet pneumatic valve 501 and the inlet pneumatic valve 503, and open the exhaust pneumatic valve 504 and the outlet pneumatic valve 502. The non-condensable gas inside the airlock tank 30 is discharged into the atmosphere, and the liquid isopentane in the pressurization tank 20 is discharged into the hot well of the condenser 10. The pressure inside the pressurization tank 20 decreases, and the six gases—isopentane, methane, ethane, propane, butane, and nitrogen—enter the pressurization tank 20 to start the next cycle, completing continuous exhaust until the gas phase space inside the condenser 10 returns to 0.9 bar.

[0081] Advantages of this invention:

[0082] This invention achieves pressure detection in the condenser by connecting a pressure booster tank to the condenser and installing a pressure transmitter. When the pressure in the condenser rises and affects the output power of the expander, the non-condensable gas in the condenser is discharged, effectively eliminating the non-condensable gas generated during the production process and ensuring the pressure in the condenser tube and the output power of the expander.

[0083] This invention connects an airlock to a pressurization tank, allowing non-condensable gases to first be discharged into the airlock and then discharged into the atmosphere. The airlock effectively isolates the gas from the air.

[0084] The present invention also prevents air from entering the device and prevents non-condensable gases or working liquids from returning to the condenser at the condenser exhaust port by installing an exhaust check valve outside the airlock tank and an exhaust check valve outside the pressurizer inlet, thereby maintaining the normal and stable operation of the device.

[0085] This invention monitors the liquid level in the booster tank by setting a level transmitter. When the liquid level in the booster tank reaches the preset level value, it indicates that all the non-condensable gases entering the booster tank from the condenser have been discharged to the airlock. This allows the booster tank to discharge the working liquid into the condenser hot well, enabling the working liquid to be recycled and reused, reducing the waste of the working liquid. At the same time, this invention enables the organic working liquid non-condensable gas discharge device to operate continuously in a cycle.

[0086] This invention automates and intelligently processes the exhaust process by incorporating a programmable logic controller (PLC). This not only makes the process faster and more convenient but also reduces labor costs associated with maintenance.

[0087] The above are merely preferred embodiments of the present invention and do not limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for emitting non-condensable gases from organic working fluids, characterized in that, include: A pressure tank and an airlock tank are connected in sequence to the condenser; The hot well of the condenser is connected to the bottom of the pressurization tank via a liquid outlet pneumatic valve. The hot well of the condenser is also connected to the pressurization tank via a working fluid pump and a liquid inlet pneumatic valve. The upper part of the condenser is connected to the pressurization tank via a gas balance pipe with a check valve. The top of the pressurization tank is connected to the airlock via an air inlet pneumatic valve. The top of the airlock is connected to the atmosphere via an exhaust pneumatic valve and an exhaust check valve. A pressure transmitter is installed on the condenser, and a level transmitter is installed on the booster tank. The pressure transmitter and the level transmitter monitor the pressure value in the condenser and the level value in the booster tank, respectively. Based on the pressure value and the level value, they control the opening and closing of the liquid inlet pneumatic valve, the liquid outlet pneumatic valve, the air inlet pneumatic valve, and the exhaust pneumatic valve, respectively, to discharge the non-condensable gas in the condenser to the atmosphere.

2. The organic working fluid non-condensable gas discharge device according to claim 1, characterized in that: It also includes programmable logic controllers; The inlet pneumatic valve, the outlet pneumatic valve, the air inlet pneumatic valve, the exhaust pneumatic valve, the pressure transmitter, and the level transmitter are all connected to the programmable logic controller. The programmable logic controller acquires the pressure value measured by the pressure transmitter and the liquid level value measured by the liquid level transmitter in real time, and controls the opening and closing of the liquid inlet pneumatic valve, the liquid outlet pneumatic valve, the air inlet pneumatic valve, and the exhaust pneumatic valve according to the pressure value and the liquid level value.

3. The organic working fluid non-condensable gas discharge device according to claim 1, characterized in that: The hot well at the bottom of the condenser is connected to the bottom of the pressure tank via a liquid outlet pneumatic valve. The hot well at the bottom of the condenser is connected to the upper part of the pressure tank via a working fluid pump and a liquid inlet pneumatic valve. The upper part of the condenser is connected to the upper part of the pressure tank via a gas balance pipe with a check valve.

4. The organic working fluid non-condensable gas discharge device according to claim 1, characterized in that: The top of the booster tank is connected to the bottom of the airlock tank via an air intake pneumatic valve.

5. The organic working fluid non-condensable gas discharge device according to claim 1, characterized in that: The condenser is provided with a condenser exhaust port at the top; the pressure tank is provided with a pressure tank air inlet and a pressure tank liquid inlet at the top, a pressure tank exhaust port at the top, and a pressure tank liquid outlet at the bottom; the airlock is provided with an airlock exhaust port at the top and an airlock air inlet at the bottom. The condenser exhaust port is connected to the pressurization tank inlet via a gas balance pipe with a check valve. The pressurization tank liquid inlet is connected to the condenser hot well via the liquid inlet pneumatic valve and the working fluid pump. The pressurization tank outlet is connected to the condenser hot well via the liquid outlet pneumatic valve. The pressurization tank exhaust port is connected to the airlock tank inlet via the air inlet pneumatic valve. The airlock tank exhaust port is connected to the atmosphere via the exhaust pneumatic valve and the exhaust check valve.

6. A method for discharging non-condensable gases from an organic working fluid according to any one of claims 1 to 5, characterized in that, Including the following steps: The pressure threshold of the condenser and the liquid level threshold of the booster tank are preset; the pressure value measured by the pressure transmitter and the liquid level value measured by the liquid level transmitter are continuously acquired. The non-condensable gas in the condenser contains working fluid vapor and enters the booster tank through the gas balance pipe equipped with a check valve to maintain pressure balance with the condenser. As non-condensable gases accumulate in the condenser, the condenser pressure will continue to rise. When the pressure value measured by the pressure transmitter reaches the pressure threshold, the liquid inlet pneumatic valve and the air inlet pneumatic valve are opened, and the liquid outlet pneumatic valve and the exhaust pneumatic valve are closed. The working fluid liquid in the condenser hot well is fed into the pressurization tank by the working fluid pump. The working fluid vapor in the pressurization tank is pressurized, cooled and liquefied and mixed with the incoming working fluid liquid. The non-condensable gas is compressed into the airlock tank as the liquid level in the pressurization tank rises. When the liquid level value measured by the liquid level transmitter reaches the liquid level threshold, the liquid inlet pneumatic valve and the air inlet pneumatic valve are closed; the liquid outlet pneumatic valve is opened, and the liquid working fluid in the pressurization tank is discharged by gravity to the hot well of the condenser under the action of pressure difference; the exhaust pneumatic valve is opened, and the non-condensable gas in the airlock is discharged to the atmosphere.

7. The method according to claim 6, characterized in that: The inlet pneumatic valve, the outlet pneumatic valve, the air inlet pneumatic valve, the exhaust pneumatic valve, the pressure transmitter, and the level transmitter are all connected to a programmable logic controller. The programmable logic controller acquires the pressure value measured by the pressure transmitter and the liquid level value measured by the liquid level transmitter in real time. When the pressure value measured by the pressure transmitter reaches the pressure threshold, the programmable logic controller controls the liquid inlet pneumatic valve and the air inlet pneumatic valve to open, and controls the liquid outlet pneumatic valve and the exhaust pneumatic valve to close. When the liquid level value measured by the liquid level transmitter reaches the preset liquid level threshold, the programmable logic controller controls the liquid inlet pneumatic valve and the air inlet pneumatic valve to close, and controls the liquid outlet pneumatic valve and the exhaust pneumatic valve to open.

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