An adaptive adjustment steam energy storage device and a steam energy storage method

Abstract

The present invention discloses an adaptively adjustable steam energy storage device and a steam energy storage method, which include a connecting pipeline, an energy storage tank and a balance tank. A partition plate is arranged in the energy storage tank to divide the energy storage tank into a first inner cavity and a second inner cavity. A filter screen is arranged in the first inner cavity to divide the first inner cavity into an upper chamber and a lower chamber. The upper chamber is communicated with the second inner cavity, and the second inner cavity is communicated with the balance tank through the connecting pipeline. The energy storage tank is externally connected with an intake pipeline, an extraction pipeline, a sewage discharge pipeline and a first water level sensor. The intake pipeline is communicated with the lower chamber, the extraction pipeline is communicated with the second inner cavity, and the sewage discharge pipeline is communicated with the lower chamber. The balance tank is externally connected with a drainage pipeline and a second water level sensor, and the drainage pipeline is communicated with the lower part of the balance tank. The balance tank of the present invention can adaptively adjust the liquid level height of the energy storage tank, so as to play a role in peak shaving and valley filling. It can convert useless intermittent steam into available continuous steam, make full use of the steam, and be more energy-saving and environment-friendly.

Description

Technical Field

[0001] The present invention relates to the technical field of steam energy storage, and particularly relates to an adaptive regulation steam energy storage device and a steam energy storage method. Background Art

[0002] During the production process in iron and steel metallurgical plants, intermittent flushing and cooling with water generates a large amount of intermittent discharged steam. The fluctuating steam at high temperature and high pressure is directly discharged, resulting in a large amount of waste heat. Generally, steam generators are used in pharmaceutical factories for disinfection and sterilization, and the discharged steam is also directly emptied after intermittent disinfection. In addition, in industrial production industries such as the food industry, textile printing and dyeing, biochemistry, pharmaceutical industry, and washing industry, as well as other industries, steam is used for heating, production, etc., and a large amount of discontinuous steam will be generated and directly emptied without further utilization.

[0003] Some devices that utilize or generate steam produce discharged steam due to their discontinuous operation. For example, high-temperature and high-pressure steam flushing equipment operates for at least 10 minutes each time, and the intermittent operation results in the discharged steam being emitted after flushing. For example, steam dryers will irregularly generate a large amount of water vapor and organic substances during long-term operation. The waste gas generated by these steam devices is directly discharged, which not only causes huge waste but also pollutes the environment. Summary of the Invention

[0004] The present invention aims to provide an adaptive regulation steam energy storage device to solve the above-mentioned existing technical problems.

[0005] To achieve the above object, the technical solution of the present invention is: an adaptive regulation steam energy storage device, including a connecting pipeline, an energy storage tank, and a balance tank. A partition is arranged in the energy storage tank, and the partition divides the energy storage tank into a first inner cavity and a second inner cavity that are interconnected. A filter screen is arranged in the first inner cavity, and the filter screen divides the first inner cavity into an upper chamber and a lower chamber. The upper chamber is interconnected with the second inner cavity, and the second inner cavity is interconnected with the balance tank through the connecting pipeline. The energy storage tank is externally connected with an intake pipeline, an extraction pipeline, a sewage discharge pipeline, and a first water level sensor. The intake pipeline is connected to the lower chamber, the extraction pipeline is connected to the second inner cavity, the sewage discharge pipeline is connected to the lower chamber, and the upper and lower ports of the first water level sensor are respectively connected to the upper chamber and the lower chamber of the energy storage tank. The balance tank is externally connected with a drainage pipeline and a second water level sensor. The drainage pipeline is connected to the lower part of the balance tank, and the upper and lower ports of the second water level sensor are respectively connected to the upper part and the lower part of the balance tank. An electromagnetic sewage discharge valve is arranged on the sewage discharge pipeline, an extraction valve is arranged on the extraction pipeline, and an electromagnetic drainage valve is arranged on the drainage pipeline.

[0006] In one embodiment, the intake pipe is externally connected above the top of the energy storage tank, and the inner pipe orifice of the intake pipe sequentially passes through the upper chamber, the filter screen and is communicated with the lower chamber. The air extraction pipe is externally connected above the top of the energy storage tank and is communicated with the second inner cavity. The sewage discharge pipe is externally connected below the bottom of the energy storage tank and is communicated with the lower chamber.

[0007] In one embodiment, both the energy storage tank and the balance tank are vertically erected, and the connecting pipe is horizontally arranged between the energy storage tank and the balance tank.

[0008] In one embodiment, the energy storage tank and the balance tank are of the same size.

[0009] In one embodiment, the two ends of the connecting pipe are respectively communicated with the bottom of the second inner cavity of the energy storage tank and the bottom of the balance tank.

[0010] The present invention also provides an adaptive regulation steam energy storage method, including the adaptive regulation steam energy storage device described in any one of the above, and the method includes:

[0011] (1) Before starting work, that is, in the initial state, the liquid level A of the clean water in the second inner cavity of the energy storage tank and the liquid level B of the clean water in the balance tank are at the same horizontal height. The air extraction valve, the electromagnetic drain valve, and the electromagnetic sewage discharge valve are closed. The gas pressures in the energy storage tank and the balance tank are equal and at the atmospheric pressure under the standard state, so as to ensure sufficient space margin during inflation and deflation.

[0012] (2) Start inflating. The intermittent waste steam-water mixture after participating in work is filled into the lower chamber of the energy storage tank through the intake pipe. The clean water and steam in the lower chamber enter the upper chamber through the filter screen, and the impurities are blocked in the lower chamber by the filter screen. After the steam and water are separated in the energy storage tank, the gas is stored in the energy storage tank. The clean water in the second inner cavity of the energy storage tank enters the balance tank through the connecting pipe. At this time, the liquid level A drops and the liquid level B rises. When the air pressure in the energy storage tank reaches the pressure value set by the air extraction valve, the air extraction valve is opened for air extraction.

[0013] (3) After starting work, there are three working conditions for adaptive regulation:

[0014] The mass flow rate at the cross-section of the intake pipe is m1, and the mass flow rate at the cross-section of the air extraction pipe is m2:

[0015] a. When the intake pipe continues to inflate and m1>m2, the liquid level A continues to drop, and the remaining clean water in the second inner cavity of the energy storage tank enters the balance tank through the connecting pipe, and the liquid level B continues to rise, so as to ensure stable air extraction, that is, to ensure the stable pressure in the energy storage tank.

[0016] b. When the intake pipe continues to inflate, but m1 < m2, the gas pressure in the energy storage tank is not sufficient to support the liquid level height of the balance tank at this time, the liquid level B drops, the clean water in the balance tank enters the energy storage tank through the connecting pipe, and the liquid level A rises, so as to ensure stable air extraction, that is, to ensure the stable pressure in the energy storage tank;

[0017] c. When the intake pipe stops inflating, the gas pressure in the energy storage tank decreases instantaneously. At this time, the adaptive adjustment situation is the same as that in condition b.

[0018] The present invention has the following beneficial effects:

[0019] The present invention includes a connecting pipe, an energy storage tank and a balance tank. A partition is arranged in the energy storage tank, and the partition divides the energy storage tank into a first inner cavity and a second inner cavity that communicate with each other. A filter screen is arranged in the first inner cavity, and the filter screen divides the first inner cavity into an upper chamber and a lower chamber. The upper chamber communicates with the second inner cavity, and the second inner cavity and the balance tank communicate with each other through the connecting pipe. The energy storage tank is externally connected with an intake pipe, an air extraction pipe, a sewage discharge pipe and a first water level sensor. The intake pipe communicates with the lower chamber, the air extraction pipe communicates with the second inner cavity, the sewage discharge pipe communicates with the lower chamber, and the upper and lower ports of the first water level sensor communicate with the upper chamber and the lower chamber of the energy storage tank respectively. The balance tank is externally connected with a drainage pipe and a second water level sensor. The drainage pipe communicates with the lower part of the balance tank, and the upper and lower ports of the second water level sensor communicate with the upper part and the lower part of the balance tank respectively. An electromagnetic sewage valve is arranged on the sewage discharge pipe, an air extraction valve is arranged on the air extraction pipe, and an electromagnetic drainage valve is arranged on the drainage pipe. This setting has the following advantages:

[0020] First, rely on the instantaneous pressure difference and liquid level height between the energy storage tank and the balance tank to ensure stable air extraction. When the air extraction mass flow rate of the air extraction pipe is not sufficient to meet the requirements, the balance tank will adaptively increase the liquid level height of the energy storage tank to stabilize its gas pressure; when the air extraction mass flow rate of the air extraction pipe exceeds the required value, the balance tank will adaptively reduce the liquid level height of the energy storage tank, so as to play a role in peak shaving and valley filling, and can convert useless intermittent steam into available continuous steam, so that the steam heat energy can be fully utilized and excessive waste can be avoided;

[0021] Second, the principle is easy to understand, the structure is simple, the processability is good, and it has strong economic benefits. The balance tank has a large volume and a high height, and has a stable working margin;

[0022] Third, it has a wide range of uses. The extracted continuous steam can be used for power generation, pressure boosting, recycling and reuse, etc., so as to achieve the purpose of energy conservation and environmental protection. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the principle of an embodiment of the present invention.

[0025] Reference numerals in the drawings: 1 intake pipe, 2 electromagnetic sewage discharge valve, 3 sewage discharge pipe, 4 energy storage tank, 41 first inner cavity, 411 upper chamber, 412 lower chamber, 42 second inner cavity, 5 filter screen, 6 connecting pipe, 7 balance tank, 8 drain pipe, 9 electromagnetic drain valve, 10 first water level sensor, 11 air extraction pipe, 12 air extraction valve, 13 partition plate, 14 second water level sensor. Specific embodiments

[0026] To further illustrate the embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible embodiments and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] Refer to Figure 1 And 2 As shown, as an embodiment of the present invention, there is provided an adaptive adjustment steam energy storage device, including a connecting pipe 6, an energy storage tank 4 and a balance tank 7. A partition plate 13 is arranged in the energy storage tank 4, and the partition plate 13 divides the energy storage tank 4 into a mutually connected first inner cavity 41 and a second inner cavity 42. A filter screen 5 is arranged in the first inner cavity 41, and the filter screen 5 divides the first inner cavity 41 into an upper chamber 411 and a lower chamber 412. The upper chamber 411 is mutually connected with the second inner cavity 42, and the second inner cavity 42 is mutually connected with the balance tank 7 through the connecting pipe 6. The energy storage tank 4 is externally connected with an intake pipe 1, an air extraction pipe 11, a sewage discharge pipe 3 and a first water level sensor 10. The intake pipe 1 is connected with the lower chamber 412, the air extraction pipe 11 is connected with the second inner cavity 42, the sewage discharge pipe 3 is connected with the lower chamber 412, and the upper and lower ports of the first water level sensor 10 are respectively connected with the upper chamber 411 and the lower chamber 412 of the energy storage tank 4. The balance tank 7 is externally connected with a drain pipe 8 and a second water level sensor 14. The drain pipe 8 is connected with the lower part of the balance tank 7, and the upper and lower ports of the second water level sensor 14 are respectively connected with the upper part and the lower part of the balance tank 7. An electromagnetic sewage discharge valve 2 is arranged on the sewage discharge pipe 3. When the impurities deposited at the bottom of the lower chamber 412 of the energy storage tank 4 are too much or the water level in the upper chamber 411 of the energy storage tank 4 is too high, the electromagnetic sewage discharge valve 2 is opened to discharge sewage, so as to control the liquid level height of the first inner cavity 41 not to exceed the partition plate 13 and clean the impurities at the bottom of the lower chamber 412. An air extraction valve 12 is arranged on the air extraction pipe 11 for controlling the opening of the air extraction pipe 11 to extract air. An electromagnetic drain valve 9 is arranged on the drain pipe 8 for controlling the opening of the drain pipe 8 to drain water.

[0028] The self - adaptive regulated steam energy storage device of the present invention, before starting to work, that is, in the initial state, in order to ensure sufficient space margin during gas charging and discharging, the liquid level A in the second inner cavity 42 of the energy storage tank 4 and the liquid level B in the balance tank 7 are at the same horizontal height. The air extraction valve 12, the electromagnetic drain valve 9, and the electromagnetic blowdown valve 2 are closed. The gas pressures in the energy storage tank 4 and the balance tank 7 are equal and at the atmospheric pressure under standard conditions. When starting to charge, the intermittent waste steam - water mixture after participating in work is filled into the lower chamber 412 of the energy storage tank 4 through the intake pipeline 1. The clean water and steam in the lower chamber 412 enter the upper chamber 411 through the filter screen 5, and the impurities are blocked in the lower chamber 412 by the filter screen 5. After the steam - water separation in the energy storage tank 4, the gas is stored in the energy storage tank 4. The clean water in the second inner cavity 42 of the energy storage tank 4 enters the balance tank 7 through the connecting pipeline 6. At this time, the liquid level A drops and the liquid level B rises. When the gas pressure in the energy storage tank 4 reaches the pressure value set by the air extraction valve 12, the air extraction valve 12 is opened for air extraction. When starting to work, there are three working conditions for self - adaptive regulation:

[0029] Define the mass flow rate at the cross - section of the intake pipeline 1 as m1, and the mass flow rate at the cross - section of the air extraction pipeline 11 as m2:

[0030] a. When the intake pipeline 1 continues to charge and m1 > m2, in order to ensure stable air extraction, that is, to ensure the stable pressure in the energy storage tank 4, the liquid level A continues to drop, and the remaining clean water in the second inner cavity 42 of the energy storage tank 4 enters the balance tank 7 through the connecting pipeline 6, and the liquid level B continues to rise. Among them, when the intake mass flow rate m1 of the intake pipeline 1 is too large, resulting in the liquid level B being too high to reach the critical value, the second water level sensor 14 will open the electromagnetic drain valve 9, and a part of the water is discharged through the drain pipeline 8;

[0031] b. When the intake pipeline 1 continues to charge, but m1 < m2, in order to ensure stable air extraction, that is, to ensure the stable pressure in the energy storage tank 4, at this time, the gas pressure in the energy storage tank 4 is not enough to support the liquid level height of the balance tank 7, the liquid level B drops, and the clean water in the balance tank 7 enters the energy storage tank 4 through the connecting pipeline 6, and the liquid level A rises;

[0032] c. When the intake pipeline 1 stops admitting gas, the gas pressure in the energy storage tank 4 decreases instantaneously. In order to ensure stable air extraction, that is, to ensure the stable pressure in the energy storage tank 4, the self - adaptive regulation situation at this time is the same as that in working condition b, that is, at this time, the gas pressure in the energy storage tank 4 is not enough to support the liquid level height of the balance tank 7, the liquid level B drops, and the clean water in the balance tank 7 enters the energy storage tank 4 through the connecting pipeline 6, and the liquid level A rises.

[0033] In summary, the present invention has the following advantages:

[0034] 1. The device relies on the instantaneous pressure difference and liquid level height between the energy storage tank 4 and the balance tank 7 to ensure stable air extraction. When the extracted mass flow rate of air is insufficient to meet the requirements, the balance tank 7 will adaptively increase the liquid level height of the energy storage tank 4 to stabilize its gas pressure; when the extracted mass flow rate of air exceeds the required amount, the balance tank 7 will adaptively decrease the liquid level height of the energy storage tank 4, thus playing a role in peak shaving and valley filling. It can convert useless intermittent steam into useful continuous steam, enabling the full utilization of steam heat energy and avoiding excessive waste.

[0035] 2. The principle of this device is easy to understand, the structure is simple, the processability is good, and it has strong economic benefits. The balance tank 7 has a large volume and high height, and has a stable working margin.

[0036] 3. It has a wide range of uses. The extracted continuous steam can be used for power generation, pressure boosting, recycling and reuse, etc., so as to achieve the purpose of energy conservation and environmental protection.

[0037] In this embodiment, the air pipeline is externally connected above the top of the energy storage tank 4, and the inner pipe orifice of the intake pipeline 1 sequentially passes through the upper chamber 411, the filter screen 5 and is connected to the lower chamber 412, so that the intermittent waste steam-water mixture after participating in the work can be quickly cooled during the process of being filled into the lower chamber 412 of the energy storage tank 4. The air extraction pipeline 11 is externally connected above the top of the energy storage tank 4 and is connected to the second inner cavity 42, so as to facilitate the rapid extraction of the gas above the inside of the energy storage tank 4. The sewage discharge pipeline 3 is externally connected below the bottom of the energy storage tank 4 and is connected to the lower chamber 412, so as to facilitate the rapid discharge of the impurity sewage at the bottom of the lower chamber 412.

[0038] In this embodiment, both the energy storage tank 4 and the balance tank 7 are vertically erected. The connecting pipeline 6 is horizontally arranged between the energy storage tank 4 and the balance tank 7. The energy storage tank 4 and the balance tank 7 have the same size. This setting makes the occupied space of the present invention smaller, and at the same time, the adaptive adjustment process is smoother and the balance is better. Of course, in other cases, it is also possible that the energy storage tank 4 and the balance tank 7 are not vertically erected.

[0039] In this embodiment, the two ends of the connecting pipeline 6 are respectively connected to the bottom of the second inner cavity 42 of the energy storage tank 4 and the bottom of the balance tank 7, and the balance effect of the adaptive adjustment is better.

[0040] The present invention also provides an adaptive adjustment steam energy storage method, including the adaptive adjustment steam energy storage device described in the above embodiment. The method includes:

[0041] (1) Before starting work, that is, in the initial state, the liquid level A of the second inner cavity 42 of the energy storage tank 4 and the liquid level B of the balance tank 7 are at the same level, the air extraction valve 12, the electromagnetic drain valve 9, and the electromagnetic drain valve 2 are closed, and the gas pressures in the energy storage tank 4 and the balance tank 7 are equal and at the atmospheric pressure under the standard state, thereby ensuring that there is sufficient space margin during inflation and deflation;

[0042] (2) Start to inflate, and fill the intermittent waste steam and water mixture after working into the lower chamber 412 of the energy storage tank 4 through the air inlet pipe 1. The clean water and steam in the lower chamber 412 enter the upper chamber 411 through the filter 5, and the impurities are blocked by the filter 5 in the lower chamber 412. After the steam and water in the energy storage tank 4 are separated, the gas is stored in the energy storage tank 4, and the clean water in the second inner chamber 42 of the energy storage tank 4 enters the balance tank 7 through the connecting pipe 6. At this time, the liquid level A drops and the liquid level B rises. When the air pressure in the energy storage tank 4 reaches the pressure value set by the air extraction valve 12, the air extraction valve 12 is opened to extract air;

[0043] (3) After starting work, there are three working conditions for adaptive adjustment:

[0044] The mass flow rate at the section 1 of the intake pipe is m1, and the mass flow rate at the section 11 of the exhaust pipe is m2:

[0045] a. When the air intake pipe 1 continues to be inflated and m1>m2, the liquid level A continues to drop, and the remaining clean water in the second inner cavity 42 of the energy storage tank 4 enters the balance tank 7 through the connecting pipe 6, and the liquid level B continues to rise, thereby ensuring stable air extraction, that is, ensuring the stability of the pressure in the energy storage tank 4. Among them, when the air intake mass flow m1 of the air intake pipe 1 is too large, causing the liquid level B to be too high and reach a critical value, the second water level sensor 14 will open the electromagnetic drain valve 9 to discharge part of the water through the drain pipe 8;

[0046] b. When the air intake pipe 1 continues to charge, but m1 <m2时,此时储能罐4内的气体压力不足以支撑平衡罐7的液面高度,液面B下降,平衡罐7里的干净水通过连通管道6进入储能罐4,液面A上升,从而保证稳定抽气,即保证储能罐4中压力稳定;

[0047] c. When the air intake pipe 1 stops intake, the gas pressure in the energy storage tank 4 decreases instantaneously. At this time, the adaptive adjustment is the same as that in working condition b, that is, the gas pressure in the energy storage tank 4 is not enough to support the liquid level of the balance tank 7, the liquid level B drops, and the clean water in the balance tank 7 enters the energy storage tank 4 through the connecting pipe 6, and the liquid level A rises, thereby ensuring stable air extraction, that is, ensuring the stability of the pressure in the energy storage tank 4.

[0048] Although the present invention has been specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all such changes fall within the scope of protection of the present invention.

Claims

1. An adaptively adjustable steam energy storage device, characterized in that: It includes a connecting pipe, a storage tank and a balance tank. A partition is arranged in the storage tank, and the partition divides the storage tank into a first inner cavity and a second inner cavity which are connected to each other. A filter screen is arranged in the first inner cavity, and the filter screen divides the first inner cavity into an upper chamber and a lower chamber. The upper chamber is connected to the second inner cavity, and the second inner cavity is connected to the balance tank through the connecting pipe. The storage tank is externally connected with an air inlet pipe, an air extraction pipe, a sewage discharge pipe and a first water level sensor. The air inlet pipe is connected to the lower chamber, the air extraction pipe is connected to the second inner cavity, the sewage discharge pipe is connected to the lower chamber, and the upper and lower ports of the first water level sensor are respectively connected to the upper chamber and the lower chamber of the storage tank. The balance tank is externally connected with a drainage pipe and a second water level sensor. The drainage pipe is connected to the lower part of the balance tank, and the upper and lower ports of the second water level sensor are respectively connected to the upper part and the lower part of the balance tank. An electromagnetic sewage valve is arranged on the sewage discharge pipe, an air extraction valve is arranged on the air extraction pipe, and an electromagnetic drainage valve is arranged on the drainage pipe; The air inlet pipe is externally connected above the top of the storage tank, and the inner pipe orifice of the air inlet pipe sequentially passes through the upper chamber, the filter screen and the lower chamber to be connected. The air extraction pipe is externally connected above the top of the storage tank and is connected to the second inner cavity. The sewage discharge pipe is externally connected below the bottom of the storage tank and is connected to the lower chamber.

2. The self - adaptive regulated steam energy storage device according to claim 1, wherein: Both the storage tank and the balance tank are longitudinally erected, and the connecting pipe is horizontally arranged between the storage tank and the balance tank.

3. The adaptive regulation steam energy storage device according to claim 1, wherein: The storage tank and the balance tank have the same size.

4. The self - adaptive adjustable steam energy storage device according to claim 1, wherein: Both ends of the connecting pipe are respectively connected to the bottom of the second inner cavity of the storage tank and the bottom of the balance tank.

5. An adaptive regulation steam energy storage method, characterized in that: It includes the self - adaptive regulation steam energy storage device according to any one of the above claims 1 - 4. The method includes: (1) Before starting work, that is, in the initial state, the liquid level A of the clean water in the second inner cavity of the storage tank and the liquid level B of the clean water in the balance tank are at the same horizontal height. The air extraction valve, the electromagnetic drainage valve and the electromagnetic sewage valve are closed. The gas pressures in the storage tank and the balance tank are equal and at the atmospheric pressure under the standard state, so as to ensure sufficient space margin during inflation and deflation. (2) Start inflating. The intermittent waste steam - water mixture after work is filled into the lower chamber of the storage tank through the air inlet pipe. The clean water and steam in the lower chamber enter the upper chamber through the filter screen, and the impurities are blocked in the lower chamber by the filter screen. After the steam - water separation in the storage tank, the gas is stored in the storage tank. The clean water in the second inner cavity of the storage tank enters the balance tank through the connecting pipe. At this time, the liquid level A drops and the liquid level B rises. When the air pressure in the storage tank reaches the pressure value set by the air extraction valve, the air extraction valve is opened for air extraction. (3) After starting work, there are three working conditions for self - adaptive regulation: The mass flow rate at the cross - section of the air inlet pipe is m1, and the mass flow rate at the cross - section of the air extraction pipe is m2: a. When the air inlet pipe continues to inflate and m1>m2, the liquid level A continues to drop, and the remaining clean water in the second inner cavity of the storage tank enters the balance tank through the connecting pipe, and the liquid level B continues to rise, so as to ensure stable air extraction, that is, to ensure the stable pressure in the storage tank; b. When the intake pipe continues to inflate, but m1 < m2, the gas pressure in the energy storage tank is not sufficient to support the liquid level height of the balance tank at this time, the liquid level B drops, and the clean water in the balance tank enters the energy storage tank through the connecting pipe, and the liquid level A rises, so as to ensure stable air extraction, that is, to ensure the stable pressure in the energy storage tank; c. When the intake pipe stops inflating, the gas pressure in the energy storage tank decreases instantaneously, and the adaptive adjustment situation is the same as that in condition b at this time.

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