Hydraulic system gas detection device, hydraulic braking system and automobile

Abstract

The utility model discloses a hydraulic system gas detection device, a hydraulic brake system and an automobile. The hydraulic system gas detection device comprises a gas-liquid separation cylinder and an infusion pump, a liquid circulation cavity and a gas observation cavity which are communicated with each other are formed in the gas-liquid separation cylinder, the gas observation cavity is located above the liquid circulation cavity, and the side wall, adjacent to the gas observation cavity, of the gas-liquid separation cylinder is transparent and provided with scale marks; the liquid pump is connected to the liquid circulation cavity and used for pumping a gas-liquid mixture in the hydraulic system and continuously injecting the gas-liquid mixture into the liquid circulation cavity, so that a liquid level is formed in the gas observation cavity after gas and liquid in the gas-liquid mixture are separated. When the hydraulic system is actually detected, the volume of the gas in the gas-liquid mixture can be accurately obtained only by observing the scale mark where the liquid level in the gas observation cavity is located, and then the performance of the hydraulic system can be conveniently evaluated.

Description

Technical Field

[0001] The utility model relates to the field of automobiles, in particular to a hydraulic system gas detection device, a hydraulic brake system and an automobile. Background Art

[0002] In the automotive field, the reliability of the brake system is an important measure of vehicle performance, and the hydraulic brake system has been widely used due to its stability and reliability. At present, due to the widespread existence of factors such as poor mechanical structure connection, irregular filling of gas-liquid mixture, poor oil characteristics, and internal valve errors of the electronic control, the hydraulic brake system has gas, which affects the braking performance of the hydraulic brake system and threatens driving safety. At present, the only way to deal with the presence of gas in the hydraulic brake system is to exhaust the gas-liquid mixture in the hydraulic brake system of a single wheel. Although the gas in the hydraulic brake system is discharged, it is impossible to accurately obtain the gas content in the hydraulic brake system, and it is difficult to further evaluate and judge the reliability of the hydraulic brake system. Utility Model Content

[0003] The embodiments of the utility model provide a hydraulic system gas detection device, a hydraulic brake system and a car, which solve the problem that the prior art cannot accurately detect and obtain the gas content in the hydraulic brake system.

[0004] In a first aspect, an embodiment of the utility model provides a hydraulic system gas detection device, which includes:

[0005] A gas-liquid separation cylinder, wherein a liquid circulation chamber and a gas observation chamber are formed in the interior thereof, the gas observation chamber is located above the liquid circulation chamber, wherein the side wall of the gas-liquid separation cylinder adjacent to the gas observation chamber is transparent and provided with scale lines;

[0006] A liquid pump is connected to the liquid circulation chamber, and is used to extract the gas-liquid mixture in the hydraulic system and continuously inject it into the liquid circulation chamber, so that the gas and liquid in the gas-liquid mixture are separated to form a liquid level in the gas observation chamber.

[0007] In the hydraulic system gas detection device provided in the embodiment of the utility model, the bottom of the gas observation chamber is connected with the top of the liquid circulation chamber, and the gas observation chamber extends straight from the top of the liquid circulation chamber in a vertical direction away from the liquid circulation chamber.

[0008] In the hydraulic system gas detection device provided in an embodiment of the utility model, the hydraulic system gas detection device also includes a first liquid storage tank, the gas-liquid separation cylinder is provided with a first liquid inlet and a first liquid outlet which pass through the liquid circulation chamber, the position of the first liquid inlet is higher than the position of the first liquid outlet, the liquid pump is connected to the first liquid inlet, and the first liquid storage tank is connected to the first liquid outlet, wherein the first liquid storage tank is used to receive the liquid separated from the gas-liquid mixture.

[0009] In the hydraulic system gas detection device provided in an embodiment of the utility model, a second liquid outlet is provided on the gas-liquid separation cylinder and passes through the top of the gas observation chamber. The hydraulic system gas detection device also includes an exhaust valve and a second liquid storage tank. The exhaust valve is provided above the gas-liquid separation cylinder and is connected to the second liquid outlet and the first liquid storage tank. The second liquid storage tank is connected to the first liquid storage tank and the liquid pump.

[0010] In the hydraulic system gas detection device provided in an embodiment of the utility model, the hydraulic system gas detection device also includes a first three-way solenoid valve and a second three-way solenoid valve, the three interfaces of the first three-way solenoid valve are respectively connected to the first liquid outlet, the second liquid outlet and the exhaust valve, and the three interfaces of the second three-way solenoid valve are respectively connected to the second liquid storage tank, the liquid pump and the hydraulic system.

[0011] In the hydraulic system gas detection device provided in an embodiment of the utility model, partitions are respectively provided on the two opposite inner walls adjacent to the gas-liquid separation cylinder and the liquid circulation chamber, and the partitions on one of the inner walls are inclined toward each other and are offset from each other in the vertical direction so as to divide the liquid circulation chamber into a plurality of mutually interconnected compartments in the vertical direction, wherein the first liquid inlet is connected to the topmost compartment, and the first liquid outlet is connected to the bottommost compartment.

[0012] In the hydraulic system gas detection device provided in the embodiment of the utility model, the top end of the liquid circulation cavity gradually narrows toward the bottom end of the gas observation cavity.

[0013] In a second aspect, an embodiment of the utility model provides a hydraulic brake system, which includes any one of the hydraulic system gas detection devices provided by the embodiments of the utility model.

[0014] In a third aspect, an embodiment of the utility model provides a vehicle, which includes any one of the hydraulic brake systems provided by the embodiments of the utility model.

[0015] The embodiment of the utility model provides a hydraulic system gas detection device, a hydraulic brake system and a car. The hydraulic system gas detection device includes a gas-liquid separation cylinder and a liquid pump; the gas-liquid separation cylinder has a liquid circulation chamber and a gas observation chamber that are interconnected, and the gas observation chamber is arranged above the liquid circulation chamber, wherein the side wall adjacent to the gas-liquid separation cylinder and the gas observation chamber is transparent and has scale lines; the liquid pump is connected to the liquid circulation chamber, and the liquid pump is used to extract the gas-liquid mixture in the hydraulic system and continuously inject it into the liquid circulation chamber, so that the gas and liquid in the gas-liquid mixture are separated and a liquid level is formed in the gas observation chamber. When actually detecting the hydraulic system, the volume of the gas in the gas-liquid mixture can be accurately obtained by observing the scale line where the liquid level in the gas observation chamber is located, and the performance of the hydraulic system can be easily evaluated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A three-dimensional diagram of a hydraulic system gas detection device provided by an embodiment of the utility model;

[0018] Figure 2 A structural block diagram of a hydraulic system gas detection device provided by an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of a gas-liquid separation cylinder provided in an embodiment of the utility model;

[0020] Figure 4 A three-dimensional diagram of an exhaust valve provided in an embodiment of the utility model;

[0021] Figure 5 A three-dimensional diagram of a first three-way solenoid valve provided in an embodiment of the utility model;

[0022] Figure 6 An axonometric diagram of a hydraulic system gas detection device provided by an embodiment of the utility model;

[0023] Figure 7 A top view of a hydraulic system gas detection device provided by an embodiment of the utility model;

[0024] Figure 8 A front view of a hydraulic system gas detection device provided by an embodiment of the utility model;

[0025] The reference numerals in the figures are:

[0026] 10. Gas-liquid separation cylinder; 101. First liquid inlet; 102. First liquid outlet; 103. Second liquid outlet; 11. Liquid circulation chamber; 1101. Partition; 110. Compartment; 12. Gas observation chamber; 21. First liquid storage tank; 22. Second liquid storage tank; 30. Liquid pump; 40. Exhaust valve; 50. First three-way solenoid valve; 51. Second three-way solenoid valve; 52. Electronic control component; 60. Base. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only for reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0029] Reference Figures 1 to 8 , please refer to Figure 1 and Figure 2 , which shows an embodiment of the hydraulic system gas detection device provided by the utility model. The structure and working principle of the hydraulic system gas detection device are described in detail below in conjunction with the drawings in the specification. The hydraulic system gas detection device includes a gas-liquid separation cylinder 10 and a liquid pump 30; the gas-liquid separation cylinder 10 has a liquid circulation chamber 11 and a gas observation chamber 12 that are interconnected, and the gas observation chamber 12 is located above the liquid circulation chamber 11, wherein the side wall of the gas-liquid separation cylinder 10 adjacent to the gas observation chamber 12 is transparent and provided with scale lines (not shown in the figure); the liquid pump 30 is connected to the liquid circulation chamber 11, and the liquid pump 30 is used to extract the gas-liquid mixture in the hydraulic system and continuously inject it into the liquid circulation chamber 11, so that the gas and liquid in the gas-liquid mixture are separated and a liquid level is formed in the gas observation chamber 12.

[0030] In specific implementation, the hydraulic system is a system that uses liquid (usually oil) as a working medium, transmits power and controls the operation of the actuator through the pressure energy of the liquid. In the hydraulic system, due to the widespread existence of factors such as poor connection of the mechanical structure, irregular filling of the gas-liquid mixture, poor oil characteristics, and internal valve body errors, gas is inevitably present in the hydraulic system. The gas and liquid will coexist in the hydraulic system in the form of a gas-liquid mixture. The state of the gas and liquid mixed together is also called a gas-liquid mixture. In this embodiment, the volume content of the gas contained in the gas-liquid mixture of the hydraulic system is detected by a hydraulic system detection device. The hydraulic system detection device is mainly composed of a gas-liquid separation cylinder 10 and a liquid pump 30. The gas-liquid separation cylinder 10 is designed and made of high-strength pressure-resistant materials as a whole, and has good pressure resistance and explosion-proof properties as a whole. The liquid circulation chamber 11 and the gas observation chamber 12 are both two cavities formed inside the gas-liquid separation cylinder 10. The liquid circulation chamber 11 and the gas observation chamber 12 can maintain good liquid tightness and air tightness with the outside of the gas-liquid separation cylinder 10. The gas observation chamber 12 is located above the liquid circulation chamber 11 in the vertical direction, and the shapes of the liquid circulation chamber 11 and the gas observation chamber 12 can be arbitrary. The side wall of the gas-liquid separation cylinder 10 adjacent to the gas observation chamber 12 is transparent, and scale lines are set along the vertical direction. Specifically, part of the side wall of the gas-liquid separation cylinder 10 adjacent to the gas observation chamber 12 can be transparent, or all of the side walls can be transparent, and there is no limitation here. From the outside of the gas-liquid separation cylinder 10, the conditions inside the gas observation chamber 12 can be clearly seen through its transparent side wall. The scale lines on the transparent side wall of the gas-liquid separation cylinder 10 can be specifically designed according to the volume of the gas observation chamber 12, and customized design can be performed according to the relationship between the volume of the gas and the volume of the gas observation chamber 12. The liquid pump 30 is a pump device with the function of extracting liquid. The liquid pump 30 is connected to the gas-liquid separation cylinder 10 through a pipeline and is connected to the liquid circulation chamber 11. The liquid pump 30 can be connected to the hydraulic system through a pipeline. When the liquid pump 30 is running, the gas-liquid mixture in the hydraulic system can be continuously extracted and continuously injected into the liquid circulation chamber 11 of the gas-liquid separation cylinder 10 through the pipeline. After the gas-liquid mixture enters the liquid circulation chamber 11, the gas in the gas-liquid mixture is separated from the liquid due to the action of buoyancy, and the gas will float above the liquid. Since the gas observation chamber 12 is arranged above the liquid circulation chamber 11, the gas will rise to a higher place and enter the gas observation chamber 12. Under the action of gravity, the liquid fills the liquid circulation chamber 11 and the liquid level is in the gas observation chamber 12. The area above the liquid level is occupied by the gas, and the liquid level forms a liquid level in the gas observation chamber 12.As the gas-liquid mixture is continuously injected, the more gas there is in the gas-liquid mixture, the larger the space occupied by the gas, and the lower the liquid level formed in the gas observation chamber 12. Different liquid levels correspond to different values ​​of the scale lines on the transparent side wall of the gas-liquid separation cylinder 10. By visually observing and reading the scale lines where the liquid level in the liquid circulation chamber 11 is located, the volume content of the liquid separated from the gas-liquid mixture can be accurately obtained, and then the gas situation in the hydraulic system can be understood, and the reliability of the hydraulic system can be further analyzed and judged.

[0031] In this embodiment, a liquid circulation chamber and a gas observation chamber are formed inside the gas-liquid separation cylinder. The gas observation chamber is arranged above the liquid circulation chamber, and the side wall adjacent to the gas-liquid separation cylinder and the gas observation chamber is set to be transparent and provided with scale lines. A liquid pump is used to extract the gas-liquid mixture in the hydraulic system and continuously inject it into the liquid circulation chamber, so that the gas and liquid in the gas-liquid mixture are separated and a liquid level is formed in the gas observation chamber. The volume of the gas in the gas-liquid mixture can be accurately obtained by observing the scale line where the liquid level in the gas observation chamber is located, and the performance of the hydraulic system can be easily evaluated and judged.

[0032] In one embodiment, referring to Figure 3 , the bottom of the gas observation chamber 12 is connected with the top of the liquid circulation chamber 11, and the gas observation chamber 12 extends straight from the top of the liquid circulation chamber 11 in the vertical direction back to the liquid circulation chamber 11. In the specific implementation, the bottom of the gas observation chamber 12 and the top of the liquid circulation chamber 11 are directly connected together, the liquid circulation chamber 11 and the gas observation chamber 12 form an integrated space together, and the gas observation chamber 12 extends straight from the top of the liquid circulation chamber 11 in the vertical direction back to the liquid circulation chamber 11 for a certain length. The gas observation chamber 12 is an elongated tubular cavity as a whole. The gas separated from the gas-liquid mixture is evenly filled in the gas observation chamber 12 according to the shape of the gas observation chamber 12. After the gas and liquid in the gas-liquid mixture are separated, the liquid level forms a horizontal liquid level in the elongated gas observation chamber 12. The scale line is designed along the direction in which the gas observation chamber 12 extends to a suitable range, and numerical reading becomes very convenient.

[0033] Further, refer to Figures 1 to 3, the hydraulic system gas detection device also includes a first liquid storage tank 21, the gas-liquid separation cylinder 10 is provided with a first liquid inlet 101 and a first liquid outlet 102 which are connected to the liquid circulation chamber 11, the first liquid inlet 101 is located higher than the first liquid outlet 102, the liquid pump 30 is connected to the first liquid inlet 101, and the first liquid storage tank 21 is connected to the first liquid outlet 102, wherein the first liquid storage tank 21 is used to receive the liquid separated from the gas-liquid mixture. In a specific implementation, the first liquid inlet 101 and the first liquid outlet 102 are both connection ports provided on the gas-liquid separation cylinder 10, and both the first liquid inlet 101 and the first liquid outlet 102 are connected to the liquid circulation chamber 11. The liquid pump 30 is liquid-tightly connected to the first liquid inlet 101 through a pipeline, so that the gas-liquid mixture extracted from the hydraulic system by the liquid pump 30 is injected into the liquid circulation chamber 11 from the first liquid inlet 101. The first liquid storage tank 21 is also liquid-tightly connected to the first liquid outlet 102 through a pipeline. The first liquid storage tank 21 is a sealed container with good pressure resistance and explosion-proof properties. The interior can withstand a large pressure, and the first liquid storage tank 21 has a large volume and can accommodate a large amount of liquid. When detecting the hydraulic system, the extraction interface of the liquid pump 30 is connected to the hydraulic system. When the liquid pump 30 is running, the gas-liquid mixture in the hydraulic system is extracted by the liquid pump 30 and continuously injected into the liquid circulation chamber 11 from the first liquid inlet 101. The gas-liquid mixture is separated into gas and liquid in the liquid circulation chamber 11. As the separated liquid gradually increases, the liquid in the liquid circulation chamber 11 is continuously injected into the first liquid storage tank 21 through the first liquid outlet 102 for collection, while the separated gas rises in the liquid circulation chamber 11 and then into the gas observation chamber 12. The liquid level rises to the gas observation chamber 12 to form a liquid level. As the gas-liquid mixture is continuously injected into the liquid circulation chamber 11, the separated liquid is also continuously injected into the first liquid storage tank 21 at the same time. Too much gas-liquid mixture injected into the liquid circulation chamber 11 will not cause excessive pressure in the chamber, so hydraulic systems with larger gas-liquid mixture can be detected.

[0034] Furthermore, refer to Figures 1 to 4, the gas-liquid separation cylinder 10 is provided with a second liquid outlet 103 which passes through to the top of the gas observation chamber 12, and the hydraulic system gas detection device also includes an exhaust valve 40 and a second liquid storage tank 22, the exhaust valve 40 is provided above the gas-liquid separation cylinder 10 and is connected to the second liquid outlet 103 and the first liquid storage tank 21, and the second liquid storage tank 22 is connected to the first liquid storage tank 21 and the liquid pump 30. In a specific implementation, in order to ensure that the detection result is not affected by the air in the device system, before conducting the hydraulic system detection, it is necessary to evacuate the air in the entire device system, including the gas observation chamber 12, the liquid circulation chamber 11, the first liquid storage tank 21, the second liquid outlet tank and the air in various pipelines. In this embodiment, a second liquid outlet 103 is provided on the gas-liquid separation cylinder 10, and the second liquid outlet 103 passes from the top of the gas observation chamber 12 to the gas observation chamber 12. The exhaust valve 40 is a valve commonly used for deflation, which is generally installed at the highest point of the system. The exhaust valve 40 here can adopt a two-way exhaust valve 40 with two ports, which is suitable for exhausting the system with liquid as the medium. The exhaust valve 40 is installed above the gas-liquid separation cylinder 10, located at the highest point of the entire device system. The liquid inlet port of the exhaust valve 40 is connected to the first liquid inlet 101 through a pipeline, and the liquid outlet interface of the exhaust valve 40 is connected to the first liquid storage tank 21 through a pipeline. The liquid outlet interface of the exhaust valve 40 is connected to the first liquid storage tank 21 through a pipeline, and the second liquid storage tank 22 is connected to the first liquid storage tank 21, and the second liquid storage tank 22 is also connected to the extraction interface of the liquid pump 30 through a pipeline. The second liquid storage tank 22 is a sealed container with good pressure resistance and explosion-proof properties like the first liquid storage tank 21. A large amount of liquid is pre-stored in the second liquid storage tank 22, and the stored liquid is the same as the liquid in the gas-liquid mixture. Before testing the hydraulic system, the device system is vented. First, the liquid pump 30 is operated to extract the liquid pre-stored in the second liquid storage tank 22 from the bottom of the second liquid storage tank 22 and continuously inject it into the liquid circulation chamber 11 from the first liquid inlet 101. After the liquid fills the liquid circulation chamber 11, the liquid enters the gas observation chamber 12, and then enters the exhaust valve 40 from the second liquid outlet 103 after the gas observation chamber 12 is filled. The air in the device system is squeezed into the exhaust valve 40 by the liquid, and then discharged to the outside of the device system under the action of the exhaust valve 40, leaving only the liquid to flow into the first liquid storage tank 21 and the second liquid storage tank 22 through the exhaust valve 40, completing an exhaust cycle. The liquid pump 30 runs continuously for a long time and performs multiple exhaust cycles. The air in the device system (including the first liquid storage tank 21, the second liquid storage tank 22, the liquid circulation chamber 11, the gas observation chamber 12 and the air in each pipeline) will be emptied to the greatest extent. Then the connection between the extraction interface of the liquid pump 30 and the second liquid outlet tank can be closed, and it can be connected to the hydraulic system to start testing the hydraulic system. Since the air in the device system is emptied, the test results obtained are very accurate.

[0035] More specifically, refer to Figures 1 to 5, the hydraulic system gas detection device also includes a first three-way solenoid valve 50 and a second three-way solenoid valve 51, the three interfaces of the first three-way solenoid valve 50 are respectively connected to the first liquid outlet 102, the second liquid outlet 103 and the exhaust valve 40, and the three interfaces of the second three-way solenoid valve 51 are respectively connected to the second liquid storage tank 22, the liquid pump 30 and the hydraulic system. In the specific implementation, the two processes of exhausting the entire device system and formally detecting the hydraulic system are carried out successively, and the two processes involve the switching of pipelines. In this embodiment, the two three-way solenoid valves are controlled by the electronic control component 52 to realize the convenient switching of the pipeline. The first three-way solenoid valve 50 and the second three-way solenoid valve 51 have the same valve body structure, and both are provided with three ports. The first three-way solenoid valve 50 and the second three-way solenoid valve 51 are both controlled by the electronic control component 52, and the electronic control component 52 can control the connection and blocking of any two ports of the first three-way solenoid valve 50 and the second three-way solenoid valve 51. First, the three ports of the first three-way solenoid valve 50 are connected to the first liquid outlet 102, the second liquid outlet 103 and the liquid inlet port of the exhaust valve 40 through pipelines. Two of the ports of the second three-way solenoid valve 51 are connected to the first liquid inlet 101 and the liquid pump 30 through pipelines, and the third port is reserved through a pipeline for access to the hydraulic system. When exhausting the device system, the electronic control component 52 controls the second three-way solenoid valve 51 to connect the two ports connecting the liquid pump 30 with the second liquid storage tank 22, and blocks the port connecting the hydraulic system. At the same time, the electronic control component 52 controls the first three-way solenoid valve 50 to connect the two ports connecting the second liquid outlet 103 with the exhaust valve 40, and blocks the port connecting the first liquid outlet 102. In this way, the liquid pump 30 can extract the liquid stored in the second liquid storage tank 22 and inject it into the liquid circulation chamber 11 through the second three-way solenoid valve 51. After the liquid fills the liquid circulation chamber 11 and the gas observation chamber 12, the liquid enters the liquid inlet port of the exhaust valve 40 through the second liquid outlet 103 and the first three-way solenoid valve 50, and then flows back to the first liquid storage tank 21 and the second liquid storage tank 22 from the liquid outlet interface of the exhaust valve 40, thereby completing an exhaust cycle, and the air is discharged out of the device system by the exhaust valve 40 along with the circulation of the liquid. After completing the exhaust of the device system, when conducting the inspection of the hydraulic system, the electronic control component 52 controls the second three-way solenoid valve 51 to connect the two ports connecting the liquid pump 30 with the hydraulic system, and blocks the port connected to the second liquid storage tank 22. At the same time, the electronic control component 52 controls the first three-way solenoid valve 50 to connect the two ports connecting the first liquid outlet 102 and the exhaust valve 40, and blocks the port connected to the second liquid outlet 103. The exhaust valve 40 is manually controlled to turn off the exhaust function of the exhaust valve 40.In this way, the liquid pump 30 can extract the gas-liquid mixture of the hydraulic system and inject it into the liquid circulation chamber 11 through the second three-way solenoid valve 51. The gas-liquid mixture is separated into gas and liquid in the liquid circulation chamber 11, and the gas rises to the gas observation chamber 12. After a part of the liquid fills the liquid circulation chamber 11, the liquid level rises to the gas observation chamber 12, and a liquid level is formed in the gas observation chamber 12. With the continuous injection of the gas-liquid mixture, the volume of the separated gas increases, and the other part of the liquid flows into the first liquid storage tank 21 through the first liquid outlet 102, the first three-way solenoid valve 50 and the exhaust valve 40, until the gas-liquid mixture of the hydraulic system is exhausted by the liquid pump 30, and the liquid level in the gas observation chamber 12 will remain constant. Finally, the scale line on the transparent side wall adjacent to the gas-liquid separation cylinder 10 and the gas observation chamber 12 can be read to obtain the volume of the gas. Overall, two three-way solenoid valves are used to realize the switching of the pipeline connection status of the two processes from exhausting the device system to formally testing the hydraulic system, and the detection of the hydraulic system is very convenient and reliable.

[0036] In one embodiment, referring to Figure 3The gas-liquid separation cylinder 10 and the liquid circulation chamber 11 are each provided with a partition 1101 on the two opposite inner walls adjacent to each other, and the partition 1101 on one inner wall is inclined toward the partition 1101 on the other inner wall, and is offset from each other in the vertical direction to divide the liquid circulation chamber 11 into a plurality of mutually interpenetrating compartments 110 in the vertical direction, wherein the first liquid inlet 101 is connected to the topmost compartment 110, and the first liquid outlet 102 is connected to the bottommost compartment 110. In a specific implementation, the partition 1101 is a plate-like structure arranged on the side wall adjacent to the gas-liquid separation cylinder 10 and the liquid circulation chamber 11, and multiple partitions 1101 are arranged on two opposite inner walls adjacent to the gas-liquid separation cylinder 10 and the liquid circulation chamber 11, wherein the partition 1101 on one inner wall is inclined at a certain angle to the partition 1101 on the other inner wall, and the partition 1101 on one inner wall and the partition 1101 on the other inner wall are arranged to be staggered with each other in the vertical direction, and at least a part of the end where the partition 1101 on one inner wall is inclined close to the partition 1101 on the other inner wall is staggered on the same vertical axis, so that the liquid circulation chamber 11 is divided into a plurality of mutually interpenetrating compartments 110 in the vertical direction, and every two adjacent compartments 110 are interpenetrated together. The first liquid inlet 101 penetrates the compartment 110 at the top end among the multiple compartments 110 in the vertical direction, and the first liquid outlet 102 penetrates the compartment 110 at the bottom end. On the whole, the compartment 110 penetrated by the first liquid inlet 101 and the compartment 110 penetrated by the first liquid outlet 102 are separated by multiple compartments 110 in the vertical direction. When the liquid pump 30 extracts the gas-liquid mixture through the first liquid inlet 101, it will first be injected into the top compartment 110 for preliminary separation of gas and liquid. Part of the gas in the gas-liquid mixture will exist in the liquid in the form of tiny bubbles. When the top compartment 110 is filled with liquid, the liquid falls into the next compartment 110 in the vertical direction under the action of gravity. In the process of the liquid falling, part of the tiny bubbles in the liquid are separated in the air and rise into the gas observation chamber 12. Then the liquid continues to fall into the next compartment 110 in the vertical direction until the liquid falls into the bottom compartment 110 in the vertical direction. The liquid starts from the bottom compartment 110 and fills all the compartments 110 upwards, and finally forms a liquid level in other observation chambers. With the continuous injection of the gas-liquid mixture, the liquid in the bottom compartment 110 flows into the first liquid storage tank 21 through the first liquid outlet 102 and then through the pipeline for collection. The liquid continues to flow in the liquid circulation chamber 11 according to the tortuous loop formed by the multiple compartments 110. The tiny bubbles in the liquid are almost completely separated, making the separation of gas and liquid in the gas-liquid mixture more efficient and the volume of the gas detected more accurate.

[0037] In one embodiment, referring to Figure 3, the top of the liquid circulation chamber 11 gradually narrows toward the bottom of the gas observation chamber 12. In the specific implementation, the gas observation chamber 12 is designed as a slender chamber extending straight along the vertical direction away from the liquid circulation chamber 11. The overall space of the liquid circulation chamber 11 is relatively wide, and the bottom of the gas observation chamber 12 is connected to the top of the liquid circulation chamber 11. The top space of the liquid circulation chamber 11 is designed to gradually narrow toward the bottom of the gas observation chamber 12, and a funnel-shaped space transition is formed between the top of the liquid circulation chamber 11 and the bottom of the gas observation chamber 12. After the liquid pump 30 continuously injects the gas-liquid mixture into the liquid circulation chamber 11, the gas separated from the gas-liquid mixture can more easily rise into the gas observation chamber 12, and it is not easy to form large bubbles in the liquid circulation chamber 11, and the gas detection is more accurate.

[0038] In one embodiment, referring to Figures 6 to 8 The hydraulic system gas detection device further includes a base 60, and the gas-liquid separation cylinder 10, the first liquid storage tank 21, the second liquid storage tank 22, and the liquid pump 30 are all installed on the base 60. In a specific implementation, the base 60 is used to install various components of the entire device. The gas-liquid separation cylinder 10, the first liquid storage tank 21, the second liquid storage tank 22, and the liquid pump 30 are respectively installed at different positions on the base 60, and are connected to each other through pipelines. Through the base 60, the entire detection device can be easily installed in various hydraulic systems for integration, so as to facilitate gas detection of different hydraulic systems.

[0039] In one embodiment, a hydraulic brake system is provided, which is mainly used for braking a vehicle. The hydraulic brake system includes a hydraulic system gas detection device, and also includes a master cylinder, a booster, a brake, a hydraulic pipeline and other components. The master cylinder is one of the most important components in the hydraulic brake system. It is responsible for transmitting the force generated when the driver steps on the brake to the brake, so that the wheel stops rotating. The booster is a device that assists the master cylinder in working. It increases the internal pressure of the master cylinder to enhance the braking effect. When the driver steps on the brake, the booster automatically starts and provides additional braking force. The brake pipeline is a pipeline system connecting the master cylinder and the brake. Its function is to transfer the brake fluid in the master cylinder to the brake, so that the wheel stops rotating. The brake is a device that converts brake fluid into wheel braking force, usually composed of brake pads, brake discs and pistons. When the driver steps on the brake, the brake fluid in the master cylinder will enter the brake, push the piston outward, and make the brake pads contact the brake disc, thereby generating friction, so that the wheel stops rotating to achieve the braking effect. In this embodiment, the hydraulic system detection device is integrated in the hydraulic brake system, and is mainly used to detect the brake fluid in the master cylinder of the hydraulic brake system. The gas content of the brake fluid in the hydraulic brake system can be detected very conveniently through the hydraulic system detection device, and then the braking performance of the hydraulic brake system can be evaluated according to the gas content in the brake fluid, and the reliability of the hydraulic brake system can be judged. Among them, the hydraulic system gas detection device in this embodiment can adopt any one of the hydraulic system gas detection devices provided by the utility model. Since the specific structure and working principle of the hydraulic system gas detection device have been introduced in detail in the previous description, they will not be repeated here for the sake of brevity of the description.

[0040] The hydraulic brake system in this embodiment adopts the hydraulic system gas detection device provided by the embodiment of the utility model, so the braking performance is more reliable in actual application.

[0041] In one embodiment, a vehicle is provided, the vehicle includes a hydraulic brake system, and the vehicle implements the braking function of the vehicle through the hydraulic brake system. The hydraulic system gas detection device in this embodiment can adopt any hydraulic system gas detection device provided by the utility model. Since the specific structure and working principle of the hydraulic system gas detection device have been described in detail in the previous description, they will not be repeated here for the sake of brevity.

[0042] The automobile in this embodiment adopts the hydraulic brake system provided by the utility model, so the braking performance of the whole vehicle is better and the safety performance of the vehicle is improved.

[0043] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A hydraulic system gas detection device, characterized in that: include: A gas-liquid separation cylinder, wherein a liquid circulation chamber and a gas observation chamber are formed in the interior thereof, the gas observation chamber is located above the liquid circulation chamber, wherein the side wall of the gas-liquid separation cylinder adjacent to the gas observation chamber is transparent and provided with scale lines; A liquid pump is connected to the liquid circulation chamber, and is used to extract the gas-liquid mixture in the hydraulic system and continuously inject it into the liquid circulation chamber, so that the gas and liquid in the gas-liquid mixture are separated to form a liquid level in the gas observation chamber.

2. The hydraulic system gas detection device according to claim 1, characterized in that: The bottom of the gas observation chamber is connected to the top of the liquid circulation chamber, and the gas observation chamber extends straightly from the top of the liquid circulation chamber in a vertical direction away from the liquid circulation chamber.

3. The hydraulic system gas detection device according to claim 2, characterized in that: The hydraulic system gas detection device also includes a first liquid storage tank. The gas-liquid separation cylinder is provided with a first liquid inlet and a first liquid outlet which pass through the liquid circulation chamber. The position of the first liquid inlet is higher than the position of the first liquid outlet. The liquid pump is connected to the first liquid inlet, and the first liquid storage tank is connected to the first liquid outlet, wherein the first liquid storage tank is used to receive the liquid separated from the gas-liquid mixture.

4. The hydraulic system gas detection device according to claim 3, characterized in that: The gas-liquid separation cylinder is provided with a second liquid outlet that passes through the top of the gas observation chamber. The hydraulic system gas detection device also includes an exhaust valve and a second liquid storage tank. The exhaust valve is arranged above the gas-liquid separation cylinder and is connected to the second liquid outlet and the first liquid storage tank. The second liquid storage tank is connected to the first liquid storage tank and the liquid pump.

5. The hydraulic system gas detection device according to claim 4, characterized in that: The hydraulic system gas detection device also includes a first three-way solenoid valve and a second three-way solenoid valve, wherein the three interfaces of the first three-way solenoid valve are respectively connected to the first liquid outlet, the second liquid outlet and the exhaust valve, and the three interfaces of the second three-way solenoid valve are respectively connected to the second liquid storage tank, the liquid pump and the hydraulic system.

6. The hydraulic system gas detection device according to any one of claims 3 to 5, characterized in that: The gas-liquid separation cylinder is provided with partitions on two opposite inner walls adjacent to the liquid circulation chamber, and the partitions on one inner wall are inclined toward the partitions on the other inner wall and are offset from each other in the vertical direction so as to divide the liquid circulation chamber into a plurality of mutually interpenetrating compartments in the vertical direction, wherein the first liquid inlet is connected to the topmost compartment, and the first liquid outlet is connected to the bottommost compartment.

7. The hydraulic system gas detection device according to any one of claims 2 to 5, characterized in that: The top end of the liquid circulation chamber gradually narrows toward the bottom end of the gas observation chamber.

8. The hydraulic system gas detection device according to any one of claims 4 to 5, characterized in that: The hydraulic system gas detection device also includes a base, and the gas-liquid separation cylinder, the first liquid storage tank, the second liquid storage tank and the liquid pump are all installed on the base.

9. A hydraulic brake system, characterized in that: It comprises a hydraulic system gas detection device as described in any one of claims 1-8.

10. An automobile, characterized in that: Includes the hydraulic brake system as described in claim 9.

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