A temperature reduction system based on a switchable gas mixing supercharging device

Abstract

This invention relates to the field of temperature control equipment or system technology, specifically to a desuperheating system based on a switchable gas mixing and pressurizing device. It includes: a switchable gas mixing and pressurizing device, a gas-liquid separator, a compressor, a gas cooler, a throttle valve, and an evaporator. The high-pressure fluid inlet of the switchable gas mixing and pressurizing device is connected to the outlet of the gas cooler to receive the high-pressure fluid output from the gas cooler; the low-pressure fluid inlet is connected to the outlet of the evaporator to receive the low-pressure fluid output from the evaporator. The received high-pressure and low-pressure fluids are pressurized through a main fluid mixing and pressurizing device, a circulation loop, and a secondary fluid mixing and pressurizing device, and then output to the gas-liquid separator through a medium-pressure fluid outlet. This invention's system can adapt to various operating conditions and load changes, adjusting its operating state according to the actual needs of the desuperheating system, thereby ensuring efficient operation under various conditions.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment or system technology, and specifically to a de-temperature system based on a switchable gas mixing and pressurization device. Background Technology

[0002] Cooling systems have broad application prospects, especially in automotive air conditioning, heat pump systems, and commercial refrigeration equipment, demonstrating enormous development potential and market value. Based on a transcritical cycle, cooling systems achieve refrigeration through four stages: compression, cooling, throttling, and evaporation. In the compression stage, low-pressure gas is pressurized and heated by the compressor; in the cooling stage, high-pressure gas is cooled through heat exchange in the condenser; in the throttling stage, high-pressure gas is depressurized through a throttling valve and may be converted into a gas-liquid mixture; in the evaporation stage, the mixture absorbs heat in the evaporator and becomes low-pressure gas, thus achieving refrigeration.

[0003] In desuperheating systems, the compression stage relies on the operation of the compressor, the cooling stage is handled by the gas cooler, the throttling stage is accomplished by a throttling valve or expansion valve, and the evaporation stage is achieved by the evaporator. However, traditional throttling valves and expansion valves suffer from drawbacks such as large throttling losses, low refrigeration efficiency, and high power consumption. Especially under partial or variable load operation, the performance of traditional throttling valves and expansion valves is limited, making it difficult to maximize energy efficiency. In contrast, ejectors have the advantage of recovering some expansion work, effectively reducing throttling losses, increasing refrigeration capacity, and reducing compression power consumption, thereby improving the overall system performance. However, the performance of ejectors is sensitive to changes in operating conditions, especially in carbon dioxide refrigeration systems with high pressure and temperature on the high-pressure side. Changes in ambient temperature and load can significantly affect their efficiency, resulting in limited energy efficiency improvements under certain operating conditions. In particular, under low or partial load operation, their performance may even be lower than that of traditional expansion valves. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a desuperheating system based on a switchable gas mixing and pressurizing device. The system includes: a switchable gas mixing and pressurizing device, a gas-liquid separator, a compressor, a gas cooler, a throttle valve, and an evaporator. The high-pressure fluid inlet of the switchable gas mixing and pressurizing device is connected to the outlet of the gas cooler to receive the high-pressure fluid output from the gas cooler. The low-pressure fluid inlet of the switchable gas mixing and pressurizing device is connected to the outlet of the evaporator to receive the low-pressure fluid output from the evaporator. The switchable gas mixing and pressurizing device pressurizes the received high-pressure and low-pressure fluids through a main fluid mixing and pressurizing device, a circulation loop, and a secondary fluid mixing and pressurizing device, and outputs the fluid to the gas-liquid separator through a medium-pressure fluid outlet. This invention's system can adapt to various operating conditions and load changes, adjusting its operating state according to the actual needs of the desuperheating system, thereby ensuring efficient operation under various conditions.

[0005] The present invention adopts the following technical solution: a de-cooling system based on a switchable gas mixing and pressurizing device, comprising: a switchable gas mixing and pressurizing device, a gas-liquid separator, a compressor, a gas cooler, a throttle valve, and an evaporator;

[0006] The switchable gas mixing and pressurizing device includes: a high-pressure fluid inlet, a low-pressure fluid inlet, a medium-pressure fluid outlet, a main fluid mixing and pressurizing device, a circulation loop, and a secondary fluid mixing and pressurizing device. The high-pressure fluid inlet of the switchable gas mixing and pressurizing device is connected to the outlet of the gas cooler to receive the high-pressure fluid output from the gas cooler. The low-pressure fluid inlet of the switchable gas mixing and pressurizing device is connected to the outlet of the evaporator to receive the low-pressure fluid output from the evaporator. The switchable gas mixing and pressurizing device pressurizes the received high-pressure and low-pressure fluids through the main fluid mixing and pressurizing device, the circulation loop, and the secondary fluid mixing and pressurizing device, and outputs the fluids through the medium-pressure fluid outlet to the gas-liquid separator.

[0007] Furthermore, the main fluid mixing and pressurizing device includes: a main ejector, a main ejector high-pressure flow pipeline, a main ejector low-pressure flow pipeline, a main ejector medium-pressure flow pipeline, a main ejector medium-pressure fluid outlet ball valve, a high-pressure fluid pressure transmitter, a low-pressure fluid pressure transmitter, and a main medium-pressure fluid pressure transmitter.

[0008] The main ejector is connected to the high-pressure fluid inlet via the main ejector high-pressure flow pipeline, directly connected to the low-pressure fluid inlet via the main ejector low-pressure flow pipeline, and connected to the medium-pressure fluid outlet via the main ejector medium-pressure flow pipeline and the ball valve at the main ejector medium-pressure fluid outlet on the same pipeline. Corresponding high-pressure fluid pressure transmitters, medium-pressure fluid pressure transmitters, and low-pressure fluid pressure transmitters are installed on the main ejector high-pressure flow pipeline, medium-pressure flow pipeline, and low-pressure flow pipeline.

[0009] Furthermore, the circulation loop includes a circulation pipeline and a circulation ball valve; the circulation pipeline is equipped with a circulation ball valve, and the circulation pipeline is connected to the main ejector medium-pressure flow pipeline and the main ejector low-pressure flow pipeline respectively.

[0010] Furthermore, the secondary fluid mixing and pressurization device includes: an auxiliary ejector, an auxiliary ejector high-pressure flow pipeline, an auxiliary ejector low-pressure flow pipeline, an auxiliary ejector medium-pressure flow pipeline, an auxiliary ejector high-pressure fluid inlet ball valve, an auxiliary ejector low-pressure fluid inlet ball valve, an auxiliary ejector medium-pressure fluid outlet ball valve, and a secondary medium-pressure fluid pressure transmitter.

[0011] The auxiliary ejector is connected to the high-pressure fluid inlet via an auxiliary ejector high-pressure flow pipeline and an auxiliary ejector high-pressure fluid inlet ball valve on the same pipeline. It is directly connected to the main ejector medium-pressure flow pipeline via an auxiliary ejector low-pressure flow pipeline and an auxiliary ejector low-pressure fluid inlet ball valve on the same pipeline. It is connected to the medium-pressure fluid outlet via an auxiliary ejector medium-pressure flow pipeline and an auxiliary ejector medium-pressure fluid outlet ball valve on the same pipeline. A secondary medium-pressure fluid pressure transmitter is installed on the auxiliary ejector medium-pressure flow pipeline.

[0012] Furthermore, the main ejector high-pressure flow line, medium-pressure flow line, and low-pressure flow line are equipped with corresponding high-pressure fluid pressure transmitters, medium-pressure fluid pressure transmitters, and low-pressure fluid pressure transmitters, specifically:

[0013] The high-pressure fluid pressure transmitter is used to monitor the pressure of the main ejector high-pressure flow pipeline and adjust the mode switching between the main fluid mixing and pressurizing device and the secondary fluid mixing and pressurizing device according to the feedback signal.

[0014] The medium-pressure fluid pressure transmitter is used to monitor the pressure of the medium-pressure flow pipeline of the main ejector and adjust the opening of the ball valve at the outlet of the medium-pressure fluid of the main ejector according to the feedback signal.

[0015] The low-pressure fluid pressure transmitter is used to monitor the pressure of the main ejector low-pressure flow pipeline and adjust the opening of the circulating ball valve according to the feedback signal.

[0016] Furthermore, the secondary medium-pressure fluid pressure transmitter is used to monitor the pressure of the auxiliary ejector medium-pressure flow pipeline and adjust the opening of the auxiliary ejector medium-pressure fluid outlet ball valve according to the feedback signal.

[0017] The beneficial effects of this invention are as follows: The switchable gas mixing and pressurizing device proposed in this invention can flexibly adapt to various working conditions and load changes. When applied to a desuperheating system, it can automatically adjust its working state according to the actual needs of the desuperheating system, ensuring efficient operation under various conditions. This pressurizing device significantly improves the gas compression effect on the low-pressure side by more effectively utilizing the energy on the high-pressure side, reducing energy loss and thus improving the energy efficiency of the entire desuperheating system. At the same time, it effectively balances the pressure between the high-pressure side and the low-pressure side, preventing pressure fluctuations or instability in the desuperheating system, thereby enhancing the stability of the desuperheating system. The switchable gas mixing and pressurizing device proposed in this invention is not only suitable for desuperheating systems, but can also replace traditional expansion valves and conventional ejectors. It also has broad application potential and can be extended to other fields and corresponding systems such as gas recovery pressurization and high-pressure fluid transmission. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a desuperheating system based on a switchable gas mixing and pressurizing device according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a switchable gas mixing and pressurizing device according to an embodiment of the present invention;

[0021] 1. Switchable gas mixing and pressurizing device; 2. Gas-liquid separator; 3. Compressor; 4. Gas cooler; 5. Throttling valve; 6. Evaporator; 101. High-pressure fluid inlet; 102. Low-pressure fluid inlet; 103. Medium-pressure fluid outlet; 104. Main ejector; 105. Auxiliary ejector; 106. Main ejector high-pressure flow pipeline; 107. Main ejector low-pressure flow pipeline; 108. Main ejector medium-pressure flow pipeline; 109. Circulation pipeline; 110. Auxiliary ejector high-pressure flow pipeline; 111. Auxiliary ejector low-pressure flow pipeline; 112. Auxiliary ejector medium-pressure flow pipeline; 113. Main ejector medium-pressure fluid outlet ball valve; 114. Circulation ball valve; 115. Auxiliary ejector high-pressure fluid inlet ball valve; 116. Auxiliary ejector low-pressure fluid inlet ball valve; 117. Auxiliary ejector medium-pressure fluid outlet ball valve; 118. High-pressure fluid pressure transmitter; 119. Low-pressure fluid pressure transmitter; 120. Main medium-pressure fluid pressure transmitter; 121. Secondary medium-pressure fluid pressure transmitter. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] A schematic diagram of a desuperheating system based on a switchable gas mixing and pressurizing device according to an embodiment of the present invention is shown below. Figure 1As shown, the device includes a switchable gas mixing and pressurizing device 1, a gas-liquid separator 2, a compressor 3, a gas cooler 4, a throttle valve 5, and an evaporator 6. The high-pressure fluid inlet 101 of the switchable gas mixing and pressurizing device 1 is connected to the outlet of the gas cooler 4 to receive the high-pressure fluid output from the gas cooler 4. The low-pressure fluid inlet 102 of the switchable gas mixing and pressurizing device 1 is connected to the outlet of the evaporator 6 to receive the low-pressure fluid output from the evaporator 6. The switchable gas mixing and pressurizing device 1 pressurizes the received high-pressure and low-pressure fluids through a main fluid mixing and pressurizing device, a circulation loop, and a secondary fluid mixing and pressurizing device, and outputs the fluids to the gas-liquid separator 2 through a medium-pressure fluid outlet 103.

[0024] In a specific embodiment of the present invention:

[0025] like Figure 2 The diagram shown is a schematic representation of a switchable gas mixing and pressurizing device 1 according to an embodiment of the present invention. The device comprises a main fluid mixing and pressurizing device, a circulation loop, and a secondary fluid mixing and pressurizing device, wherein:

[0026] The main fluid mixing and pressurization device includes: a main ejector 104, a main ejector high-pressure flow pipeline 106, a main ejector low-pressure flow pipeline 107, a main ejector medium-pressure flow pipeline 108, a main ejector medium-pressure fluid outlet ball valve 113, a high-pressure fluid pressure transmitter 118, a low-pressure fluid pressure transmitter 119, and a main medium-pressure fluid pressure transmitter 120; correspondingly, the main ejector 104 is connected to the high-pressure fluid inlet 101 through the main ejector high-pressure flow pipeline 106; the main ejector 104 is connected to the high-pressure fluid inlet 101 through the main ejector low-pressure flow pipeline 107 and... The low-pressure fluid inlet 102 is connected; the main ejector medium-pressure flow pipeline 108 is equipped with a main ejector medium-pressure fluid outlet ball valve 113, and the main ejector 104 is connected to the medium-pressure fluid outlet 103 through the main ejector medium-pressure flow pipeline 108; the high-pressure fluid pressure transmitter 118 is installed on the corresponding main ejector high-pressure flow pipeline 106; the low-pressure fluid pressure transmitter 119 is installed on the corresponding main ejector low-pressure flow pipeline 107; and the main medium-pressure fluid pressure transmitter 120 is installed on the corresponding main ejector medium-pressure flow pipeline 108.

[0027] The circulation loop includes: circulation pipeline 109 and circulation ball valve 114; circulation ball valve 114 is installed on circulation pipeline 109, thereby connecting the main ejector medium pressure flow pipeline 108 and the main ejector low pressure flow pipeline 107 through circulation pipeline 109.

[0028] The secondary fluid mixing and pressurization device includes: an auxiliary ejector 105, an auxiliary ejector high-pressure flow pipeline 110, an auxiliary ejector low-pressure flow pipeline 111, an auxiliary ejector medium-pressure flow pipeline 112, an auxiliary ejector high-pressure fluid inlet ball valve 115, an auxiliary ejector low-pressure fluid inlet ball valve 116, an auxiliary ejector medium-pressure fluid outlet ball valve 117, and a secondary medium-pressure fluid pressure transmitter 121; corresponding to the main fluid mixing and pressurization device, the auxiliary ejector 105 connects to the auxiliary ejector high-pressure flow pipeline 110 and the auxiliary ejector on its pipeline. The high-pressure fluid inlet ball valve 115 is directly connected to the high-pressure fluid inlet 101; the auxiliary ejector 105 is connected to the main ejector medium-pressure fluid pipeline 108 through the auxiliary ejector low-pressure fluid pipeline 111 and the auxiliary ejector low-pressure fluid inlet ball valve 116 on the pipeline; the auxiliary ejector 105 is connected to the medium-pressure fluid outlet 103 through the auxiliary ejector medium-pressure fluid pipeline 112 and the auxiliary ejector medium-pressure fluid outlet ball valve 117 on the pipeline; a secondary medium-pressure fluid pressure transmitter 121 is installed on the auxiliary ejector medium-pressure fluid pipeline 112.

[0029] The switchable gas mixing and pressurizing device in this embodiment has the following switching control logic: Based on the pressure of the main ejector high-pressure flow pipeline 106 (i.e., the pressure of the high-pressure fluid inlet 101) monitored by the high-pressure fluid pressure transmitter 118, when the pressure is high, the pressure of the medium-pressure fluid outlet 103 can reach the target pressure solely through the main mixing and pressurizing fluid system using the main ejector 104. At this time, the auxiliary ejector high-pressure fluid inlet ball valve 115, the auxiliary ejector low-pressure fluid inlet ball valve 116, and the auxiliary ejector medium-pressure fluid outlet ball valve 117 need to be closed. The high-pressure fluid flowing through the main ejector high-pressure flow pipeline 106 enters the main ejector 104 to eject the low-pressure fluid flowing through the main ejector low-pressure flow pipeline 107, becoming medium-pressure fluid, and finally flowing through the main ejector medium-pressure flow pipeline 108 to reach the medium-pressure fluid outlet 103. When the pressure is low, both the main ejector 104 and the auxiliary ejector 105 need to be used simultaneously to reach the target pressure of the medium-pressure fluid outlet 103. When necessary, the auxiliary ejector high-pressure fluid inlet ball valve 115, the auxiliary ejector low-pressure fluid inlet ball valve 116, and the auxiliary ejector medium-pressure fluid outlet ball valve 117 need to be opened, while the main ejector medium-pressure fluid outlet ball valve 113 is closed. The operation process of the first half of the secondary fluid mixing and pressurizing device is the same as that of the main fluid mixing and pressurizing device. The difference is in the second half. The medium-pressure fluid flowing from the main ejector 104 through the main ejector medium-pressure flow pipeline 108 does not directly reach the medium-pressure fluid outlet 103 because the pressure is not up to standard. Instead, it flows through the auxiliary ejector low-pressure flow pipeline 111 as the low-pressure fluid of the auxiliary ejector 105 (called the main medium-pressure fluid). The high-pressure fluid flowing through the auxiliary ejector high-pressure flow pipeline 110 is ejected in the auxiliary ejector 105 into a higher medium-pressure fluid that meets the target pressure (called the secondary medium-pressure fluid). Finally, it flows through the auxiliary ejector medium-pressure flow pipeline 112 to reach the medium-pressure fluid outlet 103. This control logic is used to deal with the pressure and flow rate variation of the high-pressure fluid.

[0030] In this embodiment of the invention, the cyclic control logic of the main fluid mixing and pressurization device is as follows:

[0031] The main low-pressure fluid pressure transmitter 119 is used to monitor the pressure of the main ejector low-pressure flow line 107, i.e. the pressure of the low-pressure fluid inlet 102. When the pressure is lower than the operating pressure, i.e. the flow rate decreases, the circulation ball valve 114 receives the feedback signal from the low-pressure fluid pressure transmitter 119 and adjusts its opening. This allows some medium-pressure fluid to be circulated back from the main ejector medium-pressure flow line 108 to the main ejector low-pressure flow line 107 according to the opening. This control logic is used to deal with the pressure and flow rate changes of the low-pressure fluid.

[0032] In this embodiment, the main medium-pressure fluid pressure control logic in the main fluid mixing and pressurization device is as follows:

[0033] The main medium-pressure fluid pressure transmitter 120 is used to monitor the pressure of the main ejector medium-pressure flow line 108, i.e., the pressure of the medium-pressure fluid outlet 103. When the main medium-pressure fluid pressure is lower than the target pressure, the main ejector medium-pressure fluid outlet ball valve 113 receives the feedback signal from the main medium-pressure fluid pressure transmitter 120 and adjusts its opening, so that the main medium-pressure fluid pressure in the main ejector medium-pressure flow line 108 rises, and the pressure of the medium-pressure fluid outlet 103 also reaches the target pressure. This control logic is used to achieve the target pressure in the main fluid mixing and pressurizing device.

[0034] In this embodiment of the invention, the pressure control logic for the secondary medium-pressure fluid in the secondary fluid mixing and pressurizing device is as follows:

[0035] The secondary medium-pressure fluid pressure transmitter 121 monitors the pressure of the auxiliary ejector medium-pressure flow line 112, i.e., the pressure of the medium-pressure fluid outlet 103. When the secondary medium-pressure fluid pressure is lower than the target pressure, the auxiliary ejector medium-pressure fluid outlet ball valve 117 receives the feedback signal from the secondary medium-pressure fluid pressure transmitter 121 and adjusts its opening, so that the secondary medium-pressure fluid pressure in the auxiliary ejector medium-pressure flow line 112 rises, and the pressure of the medium-pressure fluid outlet 103 also reaches the target pressure. This control logic is used to achieve the target pressure in the secondary fluid mixing and pressurizing device.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 desuperheating system based on a switchable gas mixing supercharging device, characterized in that, include: Switchable gas mixing booster, gas-liquid separator, compressor, gas cooler, throttle valve and evaporator; The switchable gas mixing and pressurizing device includes: a high-pressure fluid inlet, a low-pressure fluid inlet, a medium-pressure fluid outlet, a main fluid mixing and pressurizing device, a circulation loop, and a secondary fluid mixing and pressurizing device. The high-pressure fluid inlet of the switchable gas mixing and pressurizing device is connected to the outlet of the gas cooler to receive the high-pressure fluid output from the gas cooler. The low-pressure fluid inlet of the switchable gas mixing and pressurizing device is connected to the outlet of the evaporator to receive the low-pressure fluid output from the evaporator. The switchable gas mixing and pressurizing device pressurizes the received high-pressure and low-pressure fluids through the main fluid mixing and pressurizing device, the circulation loop, and the secondary fluid mixing and pressurizing device, and outputs the fluids through the medium-pressure fluid outlet to the gas-liquid separator. The main fluid mixing and pressurizing device includes: a main ejector, a main ejector high-pressure flow pipeline, a main ejector low-pressure flow pipeline, a main ejector medium-pressure flow pipeline, a main ejector medium-pressure fluid outlet ball valve, a high-pressure fluid pressure transmitter, a low-pressure fluid pressure transmitter, and a main medium-pressure fluid pressure transmitter. The main ejector is connected to the high-pressure fluid inlet via the main ejector high-pressure flow pipeline, directly connected to the low-pressure fluid inlet via the main ejector low-pressure flow pipeline, and connected to the medium-pressure fluid outlet via the main ejector medium-pressure flow pipeline and the ball valve at the main ejector medium-pressure fluid outlet on the same pipeline. Corresponding high-pressure fluid pressure transmitters, medium-pressure fluid pressure transmitters, and low-pressure fluid pressure transmitters are installed on the main ejector high-pressure flow pipeline, medium-pressure flow pipeline, and low-pressure flow pipeline. The switching control logic of the switchable gas mixing and pressurizing device is as follows: based on the pressure of the high-pressure fluid inlet monitored by the high-pressure fluid pressure transmitter, when the pressure of the high-pressure fluid inlet changes to a high level, the main ejector is used to make the pressure of the medium-pressure fluid outlet reach the target pressure; when the pressure of the high-pressure fluid inlet changes to a low level, the main ejector and the auxiliary ejector are used simultaneously to make the pressure of the medium-pressure fluid outlet reach the target pressure.

2. The temperature attenuation system based on the switchable gas mixing supercharging device according to claim 1, characterized in that: The circulation loop includes a circulation pipeline and a circulation ball valve; the circulation pipeline is equipped with a circulation ball valve and is connected to the main ejector medium-pressure flow pipeline and the main ejector low-pressure flow pipeline respectively.

3. The temperature attenuation system based on the switchable gas mixing supercharging device according to claim 1, characterized in that: The secondary fluid mixing and pressurization device includes: an auxiliary ejector, an auxiliary ejector high-pressure flow pipeline, an auxiliary ejector low-pressure flow pipeline, an auxiliary ejector medium-pressure flow pipeline, an auxiliary ejector high-pressure fluid inlet ball valve, an auxiliary ejector low-pressure fluid inlet ball valve, an auxiliary ejector medium-pressure fluid outlet ball valve, and a secondary medium-pressure fluid pressure transmitter. The auxiliary ejector is connected to the high-pressure fluid inlet via an auxiliary ejector high-pressure flow pipeline and an auxiliary ejector high-pressure fluid inlet ball valve on the same pipeline. It is directly connected to the main ejector medium-pressure flow pipeline via an auxiliary ejector low-pressure flow pipeline and an auxiliary ejector low-pressure fluid inlet ball valve on the same pipeline. It is connected to the medium-pressure fluid outlet via an auxiliary ejector medium-pressure flow pipeline and an auxiliary ejector medium-pressure fluid outlet ball valve on the same pipeline. A secondary medium-pressure fluid pressure transmitter is installed on the auxiliary ejector medium-pressure flow pipeline.

4. The desuperheating system based on the switchable gas mixing pressurizing device according to claim 2, characterized in that: The main ejector high-pressure flow line, medium-pressure flow line, and low-pressure flow line are equipped with corresponding high-pressure fluid pressure transmitters, medium-pressure fluid pressure transmitters, and low-pressure fluid pressure transmitters, specifically: The high-pressure fluid pressure transmitter is used to monitor the pressure of the main ejector high-pressure flow pipeline and adjust the mode switching between the main fluid mixing and pressurizing device and the secondary fluid mixing and pressurizing device according to the feedback signal. The medium-pressure fluid pressure transmitter is used to monitor the pressure of the medium-pressure flow pipeline of the main ejector and adjust the opening of the ball valve at the outlet of the medium-pressure fluid of the main ejector according to the feedback signal. The low-pressure fluid pressure transmitter is used to monitor the pressure of the main ejector low-pressure flow pipeline and adjust the opening of the circulating ball valve according to the feedback signal.

5. The temperature attenuation system based on the switchable gas mixing supercharging device according to claim 3, characterized in that: The secondary medium-pressure fluid pressure transmitter is used to monitor the pressure of the auxiliary ejector medium-pressure flow pipeline and adjust the opening of the auxiliary ejector medium-pressure fluid outlet ball valve according to the feedback signal.

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