Pressure regulator, control method thereof and liquid circulation structure

Abstract

The invention discloses a pressure regulating structure, a control method thereof and a liquid circulation system, the pressure regulating structure comprises a first cavity, a second cavity, a balance channel and a supercharger, fluid in the liquid circulation system is controlled through pressurization and decompression to form pulsating negative pressure in the fluid circulation system, and then the movement direction of the fluid at the damaged position after damage is controlled, and leakage is prevented.

Description

Technical Field

[0001] The present invention relates to a fluid circulation structure including liquid cooling heat dissipation, and specifically to a voltage regulator, its control method, and a liquid circulation structure. Background Art

[0002] With the development of technology, the power consumption of charged devices such as computers and charging piles gradually increases, and their heat dissipation requirements are becoming increasingly urgent. Currently, there are three major types of radiators on the market, but their effects are not good. They are respectively: 1. Passive radiators, which only have heat sinks and have insufficient heat dissipation capacity; 2. Air-cooled radiators, which are equipped with fans on the basis of heat sinks to enhance heat dissipation capacity, but also have high wind noise; 3. Liquid-cooled radiators. Currently, the common liquid-cooled radiators on the market are all positive pressure radiators. That is, because the water pump pumps water into the liquid cooling head, and at the same time the cold liquid expands due to heat, the internal pressure of the key liquid section including the liquid cooling head in the liquid path is greater than the external atmospheric pressure. Once damaged, it will leak liquid outward. And because the liquid cooling head interface is currently inside the computer case, once it leaks liquid, it is easy to cause serious electrical damage.

[0003] Recently, a liquid cooling heat dissipation system with internal negative pressure has emerged, but it must rely on external devices such as vacuum pumps to form negative pressure, resulting in a bulky volume and a complex structure, which is not conducive to popularization and use. Summary of the Invention

[0004] In view of the above deficiencies, a voltage regulator, its control method, and a liquid circulation structure are proposed to solve the leakage problem of the fluid circulation structure and the problems of the bulky volume and complex structure of the existing negative pressure liquid-cooled radiator.

[0005] To achieve the above object, the technical solutions adopted by the present invention are as follows: Disclose a voltage regulator applied to a fluid circulation structure. The fluid circulation structure includes a fluid channel. The fluid channel is connected in series with the inlet and outlet of a circulation pump to form a circulation loop. The circulation loop is isolated from the outside. There is a circulating fluid in the circulation loop. The circulating fluid includes gas or liquid. The circulation loop has a flow resistance. When the circulation pump drives the circulating fluid to circulate in the circulation loop, there is a change point in the circulation loop. Along the circulation direction of the circulating fluid, the section from the outlet of the circulation pump to the change point in the circulation loop is the high-pressure section, and the section from the change point to the inlet of the circulation pump is the low-pressure section. The pressure in the high-pressure section is greater than the external pressure and greater than the pressure in the low-pressure section. Comprising a first cavity, a second cavity, and a supercharger, wherein the first cavity and the second cavity are made of a dense material. The first cavity is connected in series in the high-pressure section, and the second cavity is connected in series in the low-pressure section. When the circulating fluid is driven by a circulating pump to form a circulation, the supercharger can change the pump pressure difference at the inlet and outlet of the circulating pump. The supercharger includes a pump power regulator or a flow resistance regulator. The pump power regulator changes the operating power of the circulating pump, and the flow resistance regulator can adjust its own flow resistance. The pump power regulator includes a PWM circuit, a potentiometer, or a switching circuit. The flow resistance regulator includes a pressure regulating valve, a ball valve, or a flow path switching valve. Along the direction of the circulating fluid circulation, the flow resistance regulator is arranged between the outlet of the first cavity and the inlet of the second cavity. The supercharger includes a timer or a monitor. The timer controls the supercharger to change the magnitude of the pump pressure difference at regular intervals. The monitor controls the supercharger to change the magnitude of the pump pressure difference according to a parameter that directly or indirectly indicates the pressure at the inlet or outlet of the circulating pump. The parameter includes the pressure at the outlet of the circulating pump, the pressure at the inlet of the circulating pump, the liquid level height in the first cavity or the second cavity, the fluid mass or gas volume or pressure in the high-pressure section or the low-pressure section. When the circulating fluid is a gas, the first cavity or the second cavity is provided with a balance channel communicating with the outside. When the circulating fluid is a liquid, the first cavity is provided with a balance channel and a variable volume structure is provided in the second cavity, or the second cavity is provided with a balance channel and a variable volume structure is provided in the first cavity. The balance channel is provided with a balance switch. The balance switch includes an electric control valve, a pressure control valve, a check valve, or a ball valve. The electric control valve includes a normally open solenoid valve, a normally closed solenoid valve, an electromagnetic reversing valve, or an electromagnetic three-way valve. The pressure control valve includes a pressure relief valve, a pressure reducing valve, a pressure maintaining valve, or a pressure regulating valve. The inlet of the check valve faces the inside of the first cavity or the outlet of the check valve faces the inside of the second cavity. The variable volume structure includes an elastic volume body provided in the cavity or an elastic cavity provided on the cavity. The elastic volume body includes a bubble, an airbag, a piston chamber with internal gas, a colloid with closed pores, a foam body, a sponge body, or a polymer. The elastic cavity includes a plate made of rubber, plastic, or metal. The variable volume structure causes the mass of the circulating fluid in the second cavity to decrease as the pressure in the second cavity decreases, or the variable volume structure causes the mass of the circulating fluid in the first cavity to increase as the pressure in the first cavity increases. When the first cavity is provided with a balance channel, the fluid in the first cavity communicates with the outside through the balance channel. The supercharger increases the pump pressure difference and the balance switch is turned on to allow the fluid in the first cavity to flow to the outside. Then the balance switch is locked and after the supercharger reduces the pump pressure difference, the pressure in the first cavity is less than the external pressure. When the second cavity is provided with a balance channel, the fluid in the second cavity communicates with the outside through the balance channel. The supercharger increases the pump pressure difference and the balance switch is turned on to allow the fluid from the outside to flow into the second cavity. Then the balance switch locks and the supercharger reduces the pump pressure difference, and the pressure in the second cavity is greater than the outside pressure.

[0006] The pressure regulator can be used in a circulating structure where the circulating fluid is a gas or a liquid. It can be used to prevent the circulating fluid from leaking out through a break, and also to prevent the outside fluid from leaking into the circulating structure through the break.

[0007] After pressurization, a balance channel is provided in the high-pressure area to relieve pressure and then reduce the pressure, so that the pressure in the circulating structure is kept less than the outside pressure, preventing the fluid from leaking from the break to the outside when the circulating structure is damaged; after pressurization, a balance channel is provided in the low-pressure area to suck in the outside fluid and then reduce the pressure, so that the pressure in the circulating structure is kept greater than the outside pressure, preventing the outside fluid from entering the circulating structure through the break when the circulating structure is damaged. When the circulating structure is damaged, it is common for the crack to gradually expand. At the initial stage, the flow resistance at the crack is greater than that after the balance channel starts, so the fluid preferentially flows through the balance channel, which can provide an opportunity for subsequent maintenance. There is no need to separately set up a vacuum pump or a booster pump to maintain the pressure difference, which improves the overall reliability and simplifies the structure to reduce costs.

[0008] Disclosed is a pressure regulator control method applied to a fluid circulating structure. The fluid circulating structure includes a fluid channel. The fluid channel connects the inlet and outlet of a circulating pump in series to form a circulating loop. The circulating loop is isolated from the environment. There is a circulating fluid in the circulating loop. The circulating fluid includes a gas or a liquid. The circulating loop has a flow resistance. When the circulating pump drives the circulating fluid to form a circulation in the circulating loop, there is a change point in the circulating loop. Along the circulating direction of the circulating fluid, the section from the outlet of the circulating pump to the change point in the circulating loop is the high-pressure section, and the section from the change point to the inlet of the circulating pump is the low-pressure section. The pressure in the high-pressure section is greater than the outside pressure and greater than the pressure in the low-pressure section. A balance channel is provided in the high-pressure section to communicate with the outside. The balance channel is provided with a balance switch to control the on-off of the balance channel. The mass of the circulating fluid in the low-pressure section decreases as the pressure in the low-pressure section decreases, or a balance channel is provided in the low-pressure section to communicate with the outside. The balance channel is provided with a balance switch to control the on-off of the balance channel. The mass of the circulating fluid in the high-pressure section increases as the pressure in the high-pressure section increases. The fluid circulating structure includes a supercharger. The supercharger can change the pump pressure difference between the inlet and outlet of the circulating pump when the circulating fluid is driven by the circulating pump to form a circulation. The supercharger periodically changes the magnitude of the pump pressure difference or changes the magnitude of the pump pressure difference according to the pressure at the inlet or outlet of the circulating pump. The supercharger periodically changes the magnitude of the pump pressure difference or changes the magnitude of the pump pressure difference according to the pressure at the inlet or outlet of the circulating pump. It is characterized in that: When the circulation pump can drive the circulation fluid to form a circulation, First step, when the delay is full or it is detected that the pressure at the outlet of the circulation pump is greater than the first threshold pressure, control the supercharger to increase the pump pressure difference, and turn on the balance switch to allow the fluid in the high-pressure section to be discharged outward through the pressure relief channel. The first threshold pressure is less than the external pressure. (Or when the delay is full or it is detected that the pressure at the inlet of the circulation pump is less than the second threshold pressure, control the supercharger to increase the pump pressure difference, and turn on the balance switch to allow the external fluid to enter the low-pressure section through the balance channel. The second threshold pressure is greater than the external pressure), Second step, when the delay is full or it is detected that the pressure at the outlet of the circulation pump is less than or equal to the first recovery pressure or after the supercharger stops increasing the pump pressure difference, the balance switch is locked. The first recovery pressure is greater than or equal to the external pressure. (Or when the delay is full or the pressure at the inlet of the circulation pump is greater than or equal to the second recovery pressure or after the supercharger stops increasing the pump pressure difference, the balance switch is locked. The second recovery pressure is less than or equal to the external pressure), Third step, the supercharger reduces the pump pressure difference.

[0009] Disclosed is a liquid circulation structure, including a liquid channel. The liquid channel is connected in series with the inlet and outlet of a circulation pump to form a circulating liquid path. The circulating liquid path is isolated from the outside. There is circulating liquid in the circulating liquid path. The circulating liquid path has a flow resistance. The circulation pump drives the circulating liquid to circulate in the circulating liquid path. There is a change point in the circulating liquid path. Along the circulating direction of the circulating liquid, the section from the outlet of the circulation pump to the change point in the circulating liquid path is the high-pressure section, and the section from the change point to the inlet of the circulation pump is the low-pressure section. The pressure in the high-pressure section is greater than the external pressure and greater than the pressure in the low-pressure section, Including a first cavity, a second cavity, and a supercharger. The first cavity and the second cavity are made of dense materials. The first cavity is connected in series in the high-pressure section, and the second cavity is connected in series in the low-pressure section. The supercharger can change the pump pressure difference between the inlet and outlet of the circulation pump after the circulating liquid forms a circulation. The supercharger includes a pump power regulator or a flow resistance regulator. The pump power regulator changes the operating power of the circulation pump. The flow resistance regulator can adjust its own flow resistance. The pump power regulator includes a PWM circuit or a potentiometer or a switching circuit. The flow resistance regulator includes a pressure regulating valve or a ball valve or a flow path switching valve. Along the circulating direction of the circulating fluid, the flow resistance regulator is arranged between the outlet of the first cavity and the inlet of the second cavity. The supercharger includes a timer or a monitor. The timer controls the supercharger to change the pump pressure difference size at regular intervals. The monitor monitors parameters that directly or indirectly indicate the pressure at the outlet of the circulation pump to control the supercharger to change the pump pressure difference size. The parameters include the pressure at the outlet of the circulation pump or the pressure at the inlet of the circulation pump or the liquid level height in the first cavity or the second cavity or the fluid mass or gas volume or pressure in the high-pressure section or the low-pressure section, The first cavity is provided with a balance channel through which the fluid in the first cavity communicates with the outside. The balance channel is provided with a balance switch, which includes an electric control valve, a pressure control valve, a check valve or a ball valve. The electric control valve includes a normally open solenoid valve, a normally closed solenoid valve, an electromagnetic directional valve or an electromagnetic three-way valve. The pressure control valve includes a pressure relief valve, a pressure reducing valve, a pressure maintaining valve or a pressure regulating valve. The inlet of the check valve faces the inside of the first cavity. An elastic volume body is arranged in the second cavity or an elastic cavity is arranged on the second cavity, so that the mass of the circulating liquid in the second cavity decreases as the pressure in the second cavity decreases. The elastic volume body includes a bubble, an airbag, a piston cavity with internal gas, a colloid with closed pores, a foam, a sponge or a polymer. The elastic cavity includes a plate made of rubber, plastic or metal. The supercharger increases the pump pressure difference and the balance switch is turned on to allow the fluid in the first cavity to flow to the outside. Then the balance switch locks and the supercharger reduces the pump pressure difference so that the pressure at the outlet of the circulation pump is less than the outside pressure.

[0010] By introducing the above-mentioned pressure regulator into the existing liquid cooling radiator to form the liquid circulation structure, a negative pressure environment is obtained in the liquid cooling system, thereby preventing leakage. If the pump power control is adopted, the transformation cost is very low, and only a balance channel needs to be additionally arranged at the pump outlet, which is very beneficial to the upgrade of the existing liquid cooling radiator.

[0011] Preferably, the pump cavity of the circulation pump is enclosed in the liquid circulation path. In this way, there is no need to compare the pressure inside the pump cavity with the outside, simplifying the usage difficulty.

[0012] Preferably, the first cavity is connected in series in the high-pressure section through a first inlet and a first outlet, and is connected to the balance channel through an exhaust port, and the exhaust port is higher than the first outlet. This enables the balance channel to pass gas rather than circulating liquid first, reducing the consumption of circulating liquid.

[0013] Preferably, a wave suppressing device is arranged in the circulating liquid in the first cavity, and the wave suppressing device includes a plate-shaped, strip-shaped or grid structure. This further separates gas and liquid, reduces the chance of liquid leaving through the balance channel, and at the same time reduces the entry of gas into the fluid circulation, preventing the circulating pump from taking in air and affecting the circulation of the circulating liquid, and reducing noise.

[0014] Preferably, a light object or liquid floating on the liquid level of the circulating liquid is arranged in the first cavity, and the light object or liquid includes plastic, foam, wood, aerogel, wax, oil or water. By covering the liquid level of the circulating liquid, the evaporation of the circulating liquid is reduced, thereby reducing the consumption rate of the circulating liquid.

[0015] Preferably, the thinnest part of the cavity wall of the high-pressure section is thicker than 5 mm. By increasing the thickness of the high-pressure section, the depth of the crack increases when it is cracked, prolonging the difficulty of circulating fluid passing through the crack and improving safety.

[0016] Preferably, the low-pressure section is an exhaust structure or the circulation pump flow is large enough or a gas-liquid mixer is provided in the low-pressure section to further prevent the circulation pump from inhaling air.

[0017] Preferably, a safety cavity is provided outside the balancing channel, and an exhaust gas processor is provided inside the safety cavity to filter the circulating fluid or toxic and hazardous substances, and the exhaust gas processor includes a condenser or filter cotton or liquid storage cotton to prevent the circulating fluid from scattering and causing harm after flowing out of the balancing channel.

[0018] Preferably, the function of the circulating pump of the voltage regulator can also be realized by multiple pumps separately or in time-sharing mode, and the circulating pump can be provided with multiple redundancies to form backup, so as to further improve reliability.

[0019] Preferably, when the liquid circulation structure is connected in series with a circuitous liquid path structure including a heat sink that is easy to retain and accumulate bubbles, the circuitous liquid path structure is arranged between the outlet of the circulation pump and the first cavity to prevent the circulation pump from influencing the circulation by air intake.

[0020] Preferably, when the fluid is a liquid and the pressure regulator adopts a timing control method, the pressure can be increased by a timing method in which the pressure increase period is shorter than the pressure reduction period. When a slight damage occurs to the fluid circulation structure, the exhaust rate of the balance channel during the pressure increase period is higher than the leakage rate of the liquid at the damaged part. At this time, when the liquid has not yet passed through the crack and leaves, the pressure increase period is switched to the pressure reduction period. The liquid at the damaged part is sucked back because the internal pressure is lower than the external pressure. When the internal and external pressures are balanced, the liquid at the damaged part stops flowing.

[0021] The beneficial effects of the present invention are: By controlling the pump pressure difference at the inlet and outlet of the circulation pump and linking with the balance switch, the pressure in the fluid circulation structure is controlled, thereby controlling the movement direction of the fluid at the damaged part after the fluid circulation structure is damaged, and avoiding secondary disasters caused by the free flow of fluid. By making the flow resistance of the balance channel smaller than the flow resistance at the damaged part when the balance channel is turned on, the fluid is preferentially passed through the balance channel rather than the damaged part, thereby preventing leakage. The method of controlling pressure does not require the installation of a vacuum pump or a high-pressure pump, simplifies the structure, reduces the volume, improves reliability, reduces costs, and is conducive to the transformation of existing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a preferred voltage regulator.

[0023] Figure 2 This is a schematic diagram of a preferred circulating pump structure.

[0024] Figure 3 Schematic diagram of a preferred first cavity structure.

[0025] Figure 4 Schematic diagram of a preferred evaporation reduction structure.

[0026] Description of main reference numerals: 1 - First cavity, 11 - First inlet, 12 - First outlet, 13 - Exhaust port, 14 - Circulating liquid, 15 - Liquid level, 16 - Air, 17 - Turbulence plate, 18 - Floating plate, 2 - Second cavity, 3 - Circulation loop, 4 - Circulation pump, 41 - Pump inlet, 42 - Pump outlet, 43 - Pump cavity, 5 - Balance channel, 6 - Balance point, 7 - Flow resistance regulator. Embodiment

[0027] To more clearly illustrate the technical solutions of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings or embodiments can be obtained based on these drawings or embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0028] As Figure 1 Shown is a schematic diagram of a preferred voltage regulator. The left side shows the structure when the balance channel is provided in the first cavity, the right side shows the structure when the balance channel is provided in the second cavity, the upper part shows the structure when the booster is a pump power regulator, and the lower part shows the structure when the booster is a flow resistance regulator. After the circulation pump 4 pumps the circulating fluid to form a circulation in the circulation loop 3, along the movement direction of the circulating fluid, the pressure between the outlet of the circulation pump 4 and the balance point 6 is greater than the outside, and the pressure from the balance point 6 to the inlet of the circulation pump 4 is less than the outside. At this time, the booster increases the pump pressure difference, so that the fluid leaves the first cavity 1 through the balance channel 5 provided in the first cavity 1, or enters the second cavity 2 through the balance channel 5 provided in the second cavity 2. Then the balance channel 5 is locked, and finally the booster reduces the pump pressure difference, so that the pressure at each part in the fluid circulation structure is less than or greater than the outside, thereby controlling the movement direction of the fluid at the damaged part when the circulation loop 3 is damaged and avoiding the occurrence of secondary disasters.

[0029] In some embodiments, the balancing channel 5 is arranged in the second cavity, the booster is a flow resistance regulator 7, the circulating pump 4 is started and pushes the circulating fluid to form a circulation in the circulating loop 3, the flow resistance regulator 7 increases the flow resistance to increase the pump pressure difference, the pressure in the first cavity 1 is further increased, the circulating fluid in the first cavity 1 is further increased, the pressure in the second cavity 2 is further reduced, the circulating fluid in the second cavity 2 is further reduced, and the balancing channel 5 is turned on. Because the pressure in the second cavity 2 is lower than the outside, the outside fluid enters the second cavity 2 through the balancing channel 5. After locking the balancing channel 5, the flow resistance regulator 7 reduces the flow resistance. At this time, the pressure in the first cavity 1 is reduced, the circulating fluid in the first cavity 1 is reduced, the pressure in the second cavity 2 is increased, and the circulating fluid in the second cavity 2 is increased, and finally the pressure at each place of the circulating loop 3 is greater than the outside.

[0030] In some embodiments, the ratio of the elastic volumes that change due to pressure changes in the high-pressure section and the low-pressure section meets certain conditions, or the difference between the pump pressure differences increased and decreased by the supercharger meets certain conditions, or the pressure difference at both ends of the balancing channel meets certain conditions after the balancing channel is turned on, so that the pressure at each location in the circulation loop 3 can be greater than or less than the outside world. After the balancing channel 5 is turned on, the closer the pressure in the cavity where the balancing channel 5 is located is to the outside pressure, or the smaller the volume in the cavity where the balancing channel 5 can change due to pressure changes, or the greater the change in the pump pressure difference changed by the supercharger, the greater the change in the pump pressure difference, then after the balancing channel 5 is locked and the supercharger reduces the pump pressure difference, when the balancing channel 5 is set in the first cavity 1, the pressure in the high-pressure section is smaller than the outside pressure, and when the balancing channel 5 is set in the second cavity 2, the pressure in the low-pressure section is greater than the outside pressure.

[0031] In some embodiments, the voltage regulator is used as follows: Step 1, start the circulation pump 4, so that the circulating fluid forms a loop in the circulation loop 3, at this time, the pressure in the high-pressure section is greater than the pressure outside and greater than the pressure in the low-pressure section (at this time, a stable initial pressure is formed everywhere in the circulation loop 3); Step 2, control the booster to increase the pump pressure difference and conduct the balancing channel 5, so that the fluid passes through the balancing channel, and reduces the pressure difference between the outside and the cavity where the balancing channel 5 is located (more circulating fluid flows out of the second cavity 2 and then enters the first cavity 1. When the balancing channel 5 is arranged in the first cavity 1, it is driven by pressure, and the fluid in the first cavity 1 flows out of the first cavity 1 through the balancing channel 5. When the balancing channel 5 is arranged in the second cavity 2, it is driven by pressure, and the external fluid flows into the second cavity 2 through the balancing channel 5); Step 3, lock the balancing channel 5 and control the supercharger to reduce the pump pressure difference.

[0032] When the circulating pump 4 will not cause a circulation failure due to the lack of circulating fluid entering, step 1 can be omitted. In some embodiments, a time-delay control supercharger is used to change the pump pressure difference. In some embodiments, a detector is used to detect the pressure in the circulation loop to control the supercharger to change the pump pressure difference.

[0033] Figure 2 It is a schematic structural diagram of the preferred circulating pump 4. During the operation of the circulating pump 4, the pressure in the pump chamber 43 may generate a local high pressure and thus there is a possibility of leakage. By wrapping the pump chamber 43 in the circulation loop 3, even if leakage occurs, it will only leak back into the circulation loop 3, thereby eliminating the possibility of leakage to the outside.

[0034] Figure 3 It is a schematic structural diagram of the preferred first chamber. The exhaust port 13 is higher than the liquid level 15. When relieving pressure outward to reduce the pressure in the first chamber 1, air 16 is preferentially discharged rather than the circulating liquid 14. The first outlet is lower than the liquid level. During the circulation of the circulating liquid 14, it is avoided that air 16 leaves the first chamber 1 through the first outlet, thereby avoiding air intake of the circulating pump 4 affecting the circulation. At the same time, it is avoided that the liquid level in the first chamber 1 rises and the circulating liquid is discharged, thereby improving safety and reducing the loss of the circulating liquid 14. When the circulating liquid 14 flows through the spoiler 17, the bubbles therein float up, achieving the effect of gas-liquid separation, and further avoiding gas flowing out of the first chamber 1 through the first outlet 12.

[0035] As Figure 4 shown, a floating plate 18 is provided in the first chamber 1. The floating plate 18 floats on the circulating liquid 14 and covers a part of the liquid level 15, reducing the liquid level 15 to reduce the evaporation rate of the circulating liquid 14.

[0036] In some embodiments, the circulating pump 4 is composed of a plurality of pumps combined.

[0037] In some embodiments, a safety chamber is externally connected in series to the balance channel 5. A tail gas processor is provided in the safety chamber to filter the circulating liquid or toxic and harmful substances. The tail gas processor includes a condenser or filter cotton or liquid storage cotton. Improve safety.

[0038] Timed short supercharging, the positive pressure time at the leakage point is short and there is no time to leak. The negative pressure time is long and it slowly sucks back.

[0039] After adopting the above scheme, by controlling the pump pressure difference and the opening and closing of the balance channel 5, the pressure at each location in the circulation loop is controlled, so that after the circulation loop is damaged, the movement direction of the fluid at the damaged location is controlled. When the liquid circulation structure is damaged, if the damaged location is air, the leakage of air to the outside will not cause harm. If the damaged location is circulating liquid, because the flow resistance of the circulating liquid is greater than that of air, during the pressure relief process of the supercharger boost balance channel, even if the internal pressure of the damaged location is higher than that of the outside, the air will leak out of the first cavity through the balance channel before the circulating liquid through the damaged location. After the leakage, the supercharger depressurization balance channel is locked. At this time, the outside air pushes the circulating liquid 4 back into the circulation loop from the damaged location, and the cycle is repeated, making it difficult to leak.

[0040] The above description is only preferably used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art can still make other modifications to the technical solution of the present invention or replace some of the technical features therein with equivalents, or split or merge some of them. Any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the technical solution of the present invention are all covered by the protection scope of the present invention.

Claims

1. A pressure regulator is applied to a fluid circulation structure. The fluid circulation structure includes a fluid passage, and the fluid passage is connected in series with the inlet and outlet of a circulation pump to form a circulation loop. The circulation loop is isolated from the outside. There is a circulating fluid in the circulation loop, and the circulating fluid includes gas or liquid. The circulation loop has a flow resistance. When the circulation pump drives the circulating fluid to circulate in the circulation loop, there is a change point in the circulation loop. Along the circulation direction of the circulating fluid, the section from the outlet of the circulation pump to the change point in the circulation loop is the high-pressure section, and the section from the change point to the inlet of the circulation pump is the low-pressure section. The pressure in the high-pressure section is greater than the external pressure and greater than the pressure in the low-pressure section. It is characterized in that: It includes a first cavity, a second cavity, and a booster. The first cavity and the second cavity are made of dense materials. The first cavity is connected in series in the high-pressure section, and the second cavity is connected in series in the low-pressure section. When the circulating fluid is driven by the circulation pump to form a circulation, the booster can change the pump pressure difference between the inlet and the outlet of the circulation pump. The booster includes a pump power regulator or a flow resistance regulator. The pump power regulator changes the operating power of the circulation pump, and the flow resistance regulator can adjust its own flow resistance. The pump power regulator includes a PWM circuit, a potentiometer, or a switching circuit. The flow resistance regulator includes a pressure regulating valve, a ball valve, or a flow path switching valve. Along the circulation direction of the circulating fluid, the flow resistance regulator is arranged between the outlet of the first cavity and the inlet of the second cavity. The booster includes a timer or a monitor. The timer controls the booster to change the size of the pump pressure difference at regular intervals. The monitor controls the booster to change the size of the pump pressure difference according to the parameter that directly or indirectly indicates the pressure at the inlet or the outlet of the circulation pump. The parameter includes the pressure at the outlet of the circulation pump, the pressure at the inlet of the circulation pump, the liquid level height in the first cavity or the second cavity, the fluid mass or gas volume or pressure in the high-pressure section or the low-pressure section, When the circulating fluid is gas, the first cavity or the second cavity is provided with a balance channel communicating with the outside. When the circulating fluid is liquid, the first cavity is provided with a balance channel and a variable volume structure is arranged in the second cavity, or the second cavity is provided with a balance channel and a variable volume structure is arranged in the first cavity. The balance channel is provided with a balance switch. The balance switch includes an electric control valve, a pressure control valve, a check valve, or a ball valve. The electric control valve includes a normally open solenoid valve, a normally closed solenoid valve, an electromagnetic reversing valve, or an electromagnetic three-way valve. The pressure control valve includes a pressure relief valve, a pressure reducing valve, a pressure maintaining valve, or a pressure regulating valve. The inlet of the check valve faces the inside of the first cavity or the outlet of the check valve faces the inside of the second cavity. The variable volume structure includes an elastic volume body arranged in the cavity or an elastic cavity arranged on the cavity. The elastic volume body includes a bubble, an airbag, a piston cavity with internal gas, a colloid with closed holes, a foam body, a sponge body, or a polymer. The elastic cavity includes a plate made of rubber, plastic, or metal. The variable volume structure makes the mass of the circulating fluid in the second cavity decrease as the pressure in the second cavity decreases, or the variable volume structure makes the mass of the circulating fluid in the first cavity increase as the pressure in the first cavity increases, When the first cavity is provided with a balance channel, the fluid in the first cavity communicates with the outside through the balance channel. The supercharger increases the pump pressure difference and the balance switch is turned on to allow the fluid in the first cavity to flow to the outside. Then the balance switch is locked and the supercharger reduces the pump pressure difference, and the pressure in the first cavity is less than the outside pressure. When the second cavity is provided with a balance channel, the fluid in the second cavity communicates with the outside through the balance channel. The supercharger increases the pump pressure difference and the balance switch is turned on to allow the outside fluid to flow into the second cavity. Then the balance switch is locked and the supercharger reduces the pump pressure difference, and the pressure in the second cavity is greater than the outside pressure.

2. A pressure regulator control method is applied to a fluid circulation structure. The fluid circulation structure includes a fluid channel. The fluid channel connects the inlet and outlet of a circulation pump in series to form a circulation loop. The circulation loop is isolated from the environment. There is a circulating fluid in the circulation loop. The circulating fluid includes gas or liquid. The circulation loop has a flow resistance. When the circulation pump drives the circulating fluid to form a circulation in the circulation loop, there is a change point in the circulation loop. Along the circulation direction of the circulating fluid, the section from the outlet of the circulation pump to the change point in the circulation loop is the high-pressure section, and the section from the change point to the inlet of the circulation pump is the low-pressure section. The pressure in the high-pressure section is greater than the outside pressure and greater than the pressure in the low-pressure section. A balance channel is provided in the high-pressure section to communicate with the outside. The balance channel is provided with a balance switch to control the on-off of the balance channel. The mass of the circulating fluid in the low-pressure section decreases as the pressure in the low-pressure section decreases (or a balance channel is provided in the low-pressure section to communicate with the outside. The balance channel is provided with a balance switch to control the on-off of the balance channel. The mass of the circulating fluid in the high-pressure section increases as the pressure in the high-pressure section increases). The fluid circulation structure includes a supercharger. The supercharger can change the pump pressure difference between the inlet and outlet of the circulation pump when the circulating fluid is driven by the circulation pump to form a circulation. The supercharger changes the pump pressure difference regularly or according to the pressure at the inlet or outlet of the circulation pump. It is characterized in that: When the circulation pump can drive the circulating fluid to form a circulation, First step, when the delay is full or it is detected that the pressure at the outlet of the circulation pump is greater than the first threshold pressure, control the supercharger to increase the pump pressure difference and turn on the balance switch to allow the fluid in the high-pressure section to be discharged outward through the pressure relief channel. The first threshold pressure is less than the outside pressure (or when the delay is full or it is detected that the pressure at the inlet of the circulation pump is less than the second threshold pressure, control the supercharger to increase the pump pressure difference and turn on the balance switch to allow the outside fluid to enter the low-pressure section through the balance channel. The second threshold pressure is greater than the outside pressure). Second step, when the delay time is up, or when the pressure at the outlet of the circulation pump is detected to be less than or equal to the first recovery pressure, or when the pressure difference between the pumps increased by the booster stops increasing, the balance switch locks. The first recovery pressure is greater than or equal to the external pressure (or when the delay time is up, or when the pressure at the inlet of the circulation pump is greater than or equal to the second recovery pressure, or when the pressure difference between the pumps increased by the booster stops increasing, the balance switch locks. The second recovery pressure is less than or equal to the external pressure). Third step, the booster reduces the pressure difference between the pumps.

3. A liquid circulation structure, comprising a liquid passage. The liquid passage is connected in series with the inlet and outlet of a circulation pump to form a circulating liquid path. The circulating liquid path is isolated from the outside. There is circulating liquid in the circulating liquid path. The circulating liquid path has a flow resistance. The circulation pump drives the circulating liquid to circulate in the circulating liquid path. There is a changing point in the circulating liquid path. Along the circulating direction of the circulating liquid, the section from the outlet of the circulation pump to the changing point in the circulating liquid path is the high-pressure section, and the section from the changing point to the inlet of the circulation pump is the low-pressure section. The pressure in the high-pressure section is greater than the external pressure which is greater than the pressure in the low-pressure section. It is characterized in that: It includes a first cavity, a second cavity, and a booster. The first cavity and the second cavity are made of dense materials. The first cavity is connected in series in the high-pressure section, and the second cavity is connected in series in the low-pressure section. After the circulating liquid forms a circulation, the booster can change the pressure difference between the inlet and the outlet of the circulation pump. The booster includes a pump power regulator or a flow resistance regulator. The pump power regulator changes the operating power of the circulation pump. The flow resistance regulator can adjust its own flow resistance. The pump power regulator includes a PWM circuit, a potentiometer, or a switching circuit. The flow resistance regulator includes a pressure regulating valve, a ball valve, or a flow path switching valve. Along the circulating direction of the circulating fluid, the flow resistance regulator is arranged between the outlet of the first cavity and the inlet of the second cavity. The booster includes a timer or a monitor. The timer controls the booster to change the pressure difference between the pumps at regular intervals. The monitor monitors a parameter that directly or indirectly indicates the pressure at the outlet of the circulation pump to control the booster to change the pressure difference between the pumps. The parameter includes the pressure at the outlet of the circulation pump, the pressure at the inlet of the circulation pump, the liquid level height in the first cavity or the second cavity, the fluid mass or gas volume or pressure in the high-pressure section or the low-pressure section. The first cavity is provided with a balance channel. The fluid in the first cavity is communicated with the outside through the balance channel. The balance channel is provided with a balance switch. The balance switch includes an electric control valve, a pressure control valve, a one-way valve, or a ball valve. The electric control valve includes a normally open solenoid valve, a normally closed solenoid valve, an electromagnetic reversing valve, or an electromagnetic three-way valve. The pressure control valve includes a pressure relief valve, a pressure reducing valve, a pressure maintaining valve, or a pressure regulating valve. The inlet of the one-way valve faces the inside of the first cavity. An elastic volume body is arranged in the second cavity, or an elastic cavity is arranged on the second cavity, so that the mass of the circulating liquid in the second cavity decreases as the pressure in the second cavity decreases. The elastic volume body includes a bubble, an airbag, a piston cavity with internal gas, a colloid with closed pores, a foam body, a sponge body, or a polymer. The elastic cavity includes a plate made of rubber, plastic, or metal. The supercharger increases the pump differential pressure and the balance switch conducts to allow the fluid in the first cavity to flow to the outside. Then the balance switch locks and the supercharger reduces the pump differential pressure so that the pressure at the outlet of the circulation pump is less than the external pressure.

4. A liquid circulation structure according to claim 3, characterized in that: The pump chamber of the circulation pump is enclosed in the circulation liquid path.

5. A liquid circulation structure according to claim 3, characterized in that: The first cavity is connected in series in the high-pressure section through the first inlet and the first outlet, and is communicated with the balance channel through the exhaust port, and the exhaust port is higher than the first outlet.

6. The liquid circulation structure according to claim 3, wherein: A wave suppressing device is provided in the circulating liquid in the first cavity, and the wave suppressing device includes a plate-shaped or strip-shaped or grid structure.

7. A liquid circulation structure according to claim 3, characterized in that: A light object or liquid floating on the liquid surface of the circulating liquid is provided in the first cavity, and the light object or liquid includes plastic or foam or wood or aerogel or wax or oil or water.

8. A liquid circulation structure according to claim 3, characterized in that: The thickness of the thinnest part of the cavity wall of the high-pressure section is greater than 5 mm.

9. A liquid circulation structure according to claim 3, characterized in that: The low-pressure section is an exhaust structure or the flow rate of the circulation pump is large enough or a gas-liquid mixer is provided in the low-pressure section.

10. A liquid circulation structure according to claim 3, characterized in that: A safety cavity is provided outside the balance channel, and a tail gas processor is provided in the safety cavity to filter the circulating liquid or toxic and harmful substances, and the tail gas processor includes a condenser or filter cotton or liquid storage cotton.

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