Air leakage detection system for booster pump

Abstract

The utility model provides an air leakage detection system for a booster pump. The air leakage detection system comprises the booster pump, a leakage pipeline, a cut-off assembly and a first air pressure measuring device. A sealed low-pressure gas cavity, a sealed high-pressure gas cavity and a piston structure are arranged in the booster pump, the piston structure divides the high-pressure gas cavity into a first area and a second area, the side wall of the first area is provided with a leakage gas connector, the side wall of the second area is provided with a high-pressure gas connector, and the high-pressure gas connector outputs high-pressure gas. The leakage pipeline is connected with the leakage gas connector and provided with a cut-off assembly and a first air pressure measuring device, and the first air pressure measuring device is located on the upstream of the cut-off assembly. The intercepting assembly intercepts the gas in the leakage pipeline and increases the pressure of the gas in the leakage pipeline, the first air pressure measuring device performs pressure testing on the gas in the leakage pipeline to obtain a first pressure value, and therefore whether the booster pump leaks gas or not is determined according to the first pressure value, and detection of gas leakage of the booster pump is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial automation technical field especially, relates to a booster pump leakage detection system. BACKGROUND

[0002] The booster pump is a pump for boosting pressure, and is widely used in industrial systems. The booster pump has various types, such as a gas-liquid booster pump and a gas booster pump.

[0003] The principle of the gas booster pump is to generate high pressure of a small area piston by using low pressure of a large area piston. The gas booster pump usually includes a sealed low-pressure gas cavity, a sealed high-pressure gas cavity and a piston structure. The piston structure moves in the low-pressure gas cavity and the high-pressure gas cavity to push high-pressure gas. The connection positions in the low-pressure gas cavity, the high-pressure gas cavity and the piston structure need to be provided with sealing elements. If the sealing elements are damaged, the gas in the gas booster pump will leak, affecting the operation effect of the booster pump. Therefore, it is urgent to detect whether the booster pump leaks during the operation of the booster pump. SUMMARY

[0004] Therefore, the utility model provides a booster pump leakage detection system, which realizes the detection of the leakage of the booster pump during the operation of the booster pump.

[0005] According to the first aspect of the utility model embodiment, a booster pump leakage detection system is provided, which comprises a booster pump, a leakage pipeline, a cut-off assembly and a first gas pressure measuring device. The booster pump comprises a sealed low-pressure gas cavity, a sealed high-pressure gas cavity and a piston structure arranged in the low-pressure gas cavity and the high-pressure gas cavity. The piston structure divides the high-pressure gas cavity into a first area and a second area. A leakage gas connection port is arranged on the side wall of the first area, and a high-pressure gas connection port is arranged on the side wall of the second area. A low-pressure gas connection port is arranged on the side wall of the low-pressure gas cavity. The leakage pipeline has an input end and an output end. The input end of the leakage pipeline is connected with the leakage gas connection port. The cut-off assembly is arranged on the leakage pipeline. The first gas pressure measuring device is connected on the leakage pipeline and located between the input end of the leakage pipeline and the input end of the cut-off assembly. The cut-off assembly is used for cutting off the gas input from the leakage gas connection port into the leakage pipeline. The first gas pressure measuring device is used for testing the pressure of the gas between the input end of the leakage pipeline and the input end of the cut-off assembly to obtain a first pressure value.

[0006] In a possible implementation manner, the leakage pipeline is provided with a break, and the cut-off assembly comprises a connecting assembly for connecting the break and a hole plate located between the connecting assembly. The hole plate is provided with a through hole, and the size of the through hole is smaller than the inner diameter size of the leakage pipeline.

[0007] In a possible implementation, the connecting assembly comprises a flange or a union.

[0008] In a possible implementation, the piston structure comprises a connecting rod, a low-pressure piston and a high-pressure piston; the connecting rod is arranged through the low-pressure cavity and the high-pressure cavity; the low-pressure piston is arranged on the connecting rod and located in the low-pressure cavity; and the high-pressure piston is arranged on the connecting rod and located in the high-pressure cavity.

[0009] In a possible implementation, the first air pressure measuring device is further connected in communication with a control device, and the first air pressure measuring device transmits the first pressure value to the control device.

[0010] In a possible implementation, the first air pressure measuring device is connected with the control device through a cable.

[0011] In a possible implementation, when the first pressure value is greater than a preset threshold value, the high-pressure cavity and / or the low-pressure cavity of the supercharging pump leaks; or when the first pressure value is less than the preset threshold value, the high-pressure cavity and / or the low-pressure cavity of the supercharging pump does not leak.

[0012] In a possible implementation, the supercharging pump leakage detection system further comprises a gas storage tank and a second air pressure measuring device; the gas storage tank comprises an air inlet and an overpressure release port, the air inlet of the gas storage tank is connected with the high-pressure gas connection port of the supercharging pump, and the overpressure release port of the gas storage tank is connected with the output end of the intercepting assembly on the leakage pipeline through a gas conveying pipe; the gas storage tank is used for storing high-pressure gas output by the supercharging pump, and when the air pressure in the gas storage tank is higher than a preset value, the gas in the gas storage tank is input into the leakage pipeline through the overpressure release port and the gas conveying pipe; the second air pressure measuring device is connected on the leakage pipeline and located between the output end of the gas conveying pipe and the output end of the leakage pipeline; the second air pressure measuring device tests the pressure of the gas between the output end of the gas conveying pipe and the output end of the leakage pipeline to obtain a second pressure value.

[0013] In a possible implementation, the second air pressure measuring device is a local air pressure gauge.

[0014] In a possible implementation, when the first pressure value is greater than or equal to the second pressure value, the high-pressure cavity and / or the low-pressure cavity of the supercharging pump leaks; or when the first pressure value is less than the second pressure value, the high-pressure cavity and / or the low-pressure cavity of the supercharging pump does not leak.

[0015] The utility model provides a booster pump leakage detection system, including booster pump, leakage pipeline, intercepting subassembly and first gas pressure measuring device. The booster pump includes sealed low pressure air cavity, sealed high pressure air cavity and piston structure, and the piston structure divides the high pressure air cavity into first area and second area, the side wall of first area is provided with leakage gas connecting port, the side wall of second area is provided with high pressure gas connecting port, and high pressure gas connecting port exports the high pressure gas generated in second area. The input end of leakage pipeline is connected with the leakage gas connecting port on the booster pump, and the leakage pipeline is provided with intercepting subassembly and first gas pressure measuring device, and first gas pressure measuring device is located the upstream of intercepting subassembly. Through setting up intercepting subassembly, intercept the gas in leakage pipeline, increase the pressure of gas in leakage pipeline, improve the measurability of gas pressure value, through setting up first gas pressure measuring device, carry out pressure test to the gas in leakage pipeline, obtain first pressure value, and then determine whether the booster pump leaks through first pressure value, realize the detection of booster pump leakage. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the booster pump leakage detection system provided by the utility model embodiment;

[0017] Figure 2 It is a structural schematic view of the booster pump provided by the utility model embodiment;

[0018] Figure 3 For Figure 2 The sectional view of the booster pump in the booster pump leakage detection system along AB direction;

[0019] Figure 4 It is a structural schematic view of the hole plate provided by the utility model embodiment;

[0020] Figure 5 It is a sectional view of the hole plate installed on the leakage pipeline provided by the utility model embodiment;

[0021] Figure 6 It is another structural schematic view of the booster pump leakage detection system provided by the utility model embodiment.

[0022] Wherein, the following is the sign:

[0023] DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model embodiment will be described in further detail below in conjunction with the drawings.

[0025] In the description of the utility model, it is understood that the directions or position relations indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions or position relations shown based on the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0026] The utility model embodiment will be described in detail below with reference to the drawings.

[0027] Figure 1 It is a structural schematic view of the pressure pump leakage detection system provided by the utility model embodiment. Figure 1 As shown in the figure, the pressure pump 11 leakage detection system 100 provided by the utility model embodiment comprises a pressure pump 11, a leakage pipeline 21, a cut-off assembly 31 and a first air pressure measuring device 41.

[0028] The pressure pump 11 comprises a sealed low-pressure air cavity, a sealed high-pressure air cavity and a piston structure arranged in the low-pressure air cavity and the high-pressure air cavity.The piston structure separates the high-pressure air cavity into a first area and a second area in the high-pressure air cavity, a leakage air connecting port 117 is arranged on the side wall of the first area, and a high-pressure air connecting port 118 is arranged on the side wall of the second area. A low-pressure air connecting port is arranged on the side wall of the low-pressure air cavity.

[0029] The leakage pipeline 21 has an input end and an output end, and the input end of the leakage pipeline 21 is connected with the leakage air connecting port 117. The cut-off assembly 31 is arranged on the leakage pipeline 21, and the first air pressure measuring device 41 is connected on the leakage pipeline 21 and located between the input end of the leakage pipeline 21 and the input end of the cut-off assembly 31.

[0030] The cut-off assembly 31 is used for cutting off the gas input from the leakage air connecting port 117 into the leakage pipeline 21.

[0031] The first air pressure measuring device 41 is used for testing the pressure of the gas between the input end of the leakage pipeline 21 and the input end of the cut-off assembly 31, and obtaining a first pressure value.

[0032] In order to facilitate the understanding of the utility model, the structure and working principle of the pressure pump 11 will be described below. Figure 2 and Figure 3 The structure and working principle of the pressure pump 11 will be described below. Figure 2 It is a structural schematic view of the pressure pump provided by the utility model embodiment, Figure 3 is a sectional view of the pressure pump in the figure along the AB direction. Figure 2

[0033] As shown in Figure 2 and Figure 3 , the booster pump 11 comprises a housing 111, which encloses a sealed low-pressure gas cavity 112 and a sealed high-pressure gas cavity 113. Exemplarily, there are two high-pressure gas cavities 113, and the low-pressure gas cavity 112 is located between the two high-pressure gas cavities 113. The number of high-pressure gas cavities 113 and low-pressure gas cavities 112 is not limited in the embodiment, for example, in an implementation, there is one high-pressure gas cavity 113 and one low-pressure gas cavity 112 respectively. As shown in Figure 3 , a piston structure 114 is arranged through the low-pressure gas cavity 112 and the high-pressure gas cavity 113. The piston structure 114 comprises a connecting rod 123, a low-pressure piston 120 and a high-pressure piston 121. The connecting rod 123 penetrates the low-pressure gas cavity 112 and the high-pressure gas cavity 113, the low-pressure piston 120 is arranged on the connecting rod 123 and located in the low-pressure gas cavity 112, the high-pressure piston 121 is arranged on the connecting rod 123 and located in the high-pressure gas cavity 113, and the area of the low-pressure piston 120 is larger than that of the high-pressure piston 121. When the connecting rod 123 moves left and right, it can drive the low-pressure piston 120 to move left and right in the low-pressure gas cavity 112, and drive the high-pressure piston 121 to move left and right in the high-pressure gas cavity 113. The high-pressure piston 121 in the piston structure 114 divides the high-pressure gas cavity 113 into a first area 115 and a second area 116 in the high-pressure gas cavity 113. It can be understood that when the position of the high-pressure piston 121 in the high-pressure gas cavity 113 is different, the space sizes of the first area 115 and the second area 116 are different. The side wall of the second area 116 in the high-pressure gas cavity 113 is provided with a high-pressure gas connection port 118, through which gas can be injected into the second area 116 or high-pressure gas can be output. The side wall of the first area 115 is provided with a leakage gas connection port 117, through which the leaked gas can be released when the gas in the first area 115 or the low-pressure gas cavity 112 leaks. The side wall of the low-pressure gas cavity 112 is provided with a low-pressure gas connection port 119, through which gas can be injected into the low-pressure gas cavity 112 or low-pressure gas can be output. Exemplarily, there are two low-pressure gas connection ports 119.

[0034] As shown in Figure 3 , the working principle of the booster pump 11 is as follows:

[0035] Low-pressure gas is injected into the low-pressure gas cavity 112, which pushes the piston structure 114 to move in the high-pressure gas cavity 113 towards the second area 116, so as to increase the pressure of the gas in the second area 116 to form high-pressure gas, which is output through the high-pressure gas connection port 118. Exemplarily, Figure 3As shown, when low-pressure gas is injected into the low-pressure gas cavity 112 through the low-pressure gas connection port 119 on the right side of the low-pressure gas cavity 112, the piston structure 114 moves to the left under the pushing action of the low-pressure gas, the space volume of the second area 116 on the left side is reduced by the high-pressure piston 121 on the left side, the pressure of the gas in the second area 116 on the left side is increased, high-pressure gas is formed, and the high-pressure gas is output through the high-pressure gas connection port 118 on the left side. Similarly, when low-pressure gas is injected into the low-pressure gas cavity 112 through the low-pressure gas connection port 119 on the left side of the low-pressure gas cavity 112, the piston structure 114 moves to the right under the pushing action of the low-pressure gas, the space volume of the second area 116 on the right side is reduced by the high-pressure piston 121 on the right side, the pressure of the gas in the second area 116 on the right side is increased, high-pressure gas is formed, and the high-pressure gas is output through the high-pressure gas connection port 118 on the right side.

[0036] As shown in Figure 3 The connection positions in the low-pressure gas cavity 112, the high-pressure gas cavity 113, and the piston structure 114 need to be provided with sealing elements 122. For example, the position where the connecting rod 123 passes through the low-pressure gas cavity 112 is provided with a sealing element, or the position where the high-pressure piston 121 contacts the side wall of the high-pressure gas cavity 113 is provided with a sealing element, or the position where the low-pressure piston 120 contacts the side wall of the low-pressure gas cavity 112 is provided with a sealing element. By providing the sealing elements, the airtightness of the low-pressure gas cavity and the high-pressure gas cavity can be ensured, and the gas pressure of the high-pressure gas generated when the supercharging pump is working can meet the use conditions. Normally, high-pressure gas is formed in the second area 116 in the high-pressure gas cavity 113, and there is almost no gas or very little gas in the first area 115 in the high-pressure gas cavity 113, so the gas pressure in the first area 115 is very low. However, when the high-pressure gas cavity 113 and / or the low-pressure gas cavity 112 of the supercharging pump leaks, the leaked gas will be released from the leakage gas connection port 117. For example, if the sealing element is damaged, assuming that the sealing element 122 provided at the position where the high-pressure piston 121 contacts the side wall of the high-pressure gas cavity 113 is damaged, then the high-pressure gas in the second area 116 will leak into the first area 115, causing the gas pressure in the second area 116 to decrease, the gas pressure in the first area 115 to increase, and the leaked gas to be released through the leakage gas connection port 117 on the side wall of the first area 115, affecting the operating performance of the supercharging pump 11. Moreover, the gas leakage caused by the damage of the sealing element usually has the characteristics of long leakage time and slow leakage speed, increasing the difficulty of detecting the leakage of the supercharging pump.

[0037] The supercharging pump leakage detection system 100 provided in this embodiment is used to detect the leakage of the supercharging pump 11.

[0038] As shown in Figure 1As shown, the booster pump leakage detection system 100 comprises a booster pump 11, a leakage pipeline 21, a shut-off assembly 31 and a first gas pressure measuring device 41. The leakage pipeline 21 has an input end and an output end, and the input end of the leakage pipeline 21 is connected with the leakage gas connecting port 117 on the booster pump 11. The shut-off assembly 31 and the first gas pressure measuring device 41 are arranged on the gas passage of the leakage pipeline 21. The shut-off assembly 31 has an input end and an output end, and the shut-off assembly 31 is used to shut off the gas input into the leakage pipeline 21 from the leakage gas connecting port 117, so as to increase the pressure of the gas between the input end of the leakage pipeline 21 and the input end of the shut-off assembly 31. The first gas pressure measuring device 41 is located upstream of the shut-off assembly 31. The so-called upstream refers to the direction above the gas flowing in the leakage pipeline 21 when the booster pump 11 leaks. The first gas pressure measuring device 41 tests the pressure of the gas between the input end of the leakage pipeline 21 and the input end of the shut-off assembly 31, and obtains a first pressure value, so as to determine whether the high-pressure gas cavity and / or the low-pressure gas cavity of the booster pump 11 leaks by the first pressure value.

[0039] In combination Figures 1-3 , the working principle of the booster pump leakage detection system 100 is as follows:

[0040] The leakage gas connecting port 117 on the booster pump 11 is connected with the input end of the leakage pipeline 21. When the high-pressure gas cavity 113 and / or the low-pressure gas cavity 112 of the booster pump leaks, the gas leaked from the booster pump 11 is input into the leakage pipeline 21. Since the shut-off assembly 31 is arranged, the shut-off assembly 31 shuts off the gas leaked from the booster pump 11, so as to increase the pressure of the gas between the input end of the leakage pipeline 21 and the input end of the shut-off assembly 31, and improve the measurability of the gas pressure measurement of the gas in the leakage pipeline 21. The first gas pressure measuring device 41 is located upstream of the shut-off assembly 31, tests the pressure of the gas between the input end of the leakage pipeline 21 and the input end of the shut-off assembly 31, and obtains a first pressure value. Subsequently, whether the high-pressure gas cavity and / or the low-pressure gas cavity of the booster pump 11 leaks can be determined by the first pressure value.

[0041] Optionally, when the first pressure value is greater than a preset threshold value, the high-pressure gas cavity and / or the low-pressure gas cavity of the booster pump leaks. Or, when the first pressure value is less than the preset threshold value, the high-pressure gas cavity and / or the low-pressure gas cavity of the booster pump does not leak.

[0042] The preset threshold value is not limited in the embodiment, and can be set according to factors such as the structure of the booster pump and the speed of the gas leaked from the booster pump in actual application.

[0043] The length and material of the leakage pipeline 21 are not limited in the embodiment. For example, the leakage pipeline 21 is a metal pipe, which can be a stainless steel pipe.

[0044] The first gas pressure measuring device 41 is not limited in type, and can be, for example, a pressure sensor for detecting gas pressure.

[0045] It can be seen that the leakage detection system for the supercharging pump provided in the embodiment comprises a supercharging pump, a leakage pipeline, a flow-stopping assembly and a first gas pressure measuring device. The supercharging pump comprises a sealed low-pressure gas cavity, a sealed high-pressure gas cavity and a piston structure, the piston structure divides the high-pressure gas cavity into a first region and a second region, a leakage gas connecting port is arranged on the side wall of the first region, a high-pressure gas connecting port is arranged on the side wall of the second region, and the high-pressure gas connecting port outputs high-pressure gas generated in the second region. The input end of the leakage pipeline is connected to the leakage gas connecting port of the supercharging pump, the flow-stopping assembly and the first gas pressure measuring device are arranged on the leakage pipeline, and the first gas pressure measuring device is located upstream of the flow-stopping assembly. By arranging the flow-stopping assembly, the gas in the leakage pipeline is stopped, the pressure of the gas in the leakage pipeline is increased, and the measurability of the gas pressure value is improved. By arranging the first gas pressure measuring device, the pressure of the gas in the leakage pipeline is tested, a first pressure value is obtained, and then it is determined whether the supercharging pump leaks by using the first pressure value, thereby achieving the leakage detection of the supercharging pump.

[0046] Optionally, as shown in Figure 1 The leakage pipeline 21 is provided with a break, and the flow-stopping assembly 31 comprises a connecting assembly 311 for connecting the break and a hole plate 312 located between the connecting assembly 311.

[0047] The hole plate 312 is provided with a through hole, and the size of the through hole is smaller than the inner diameter size of the leakage pipeline 21.

[0048] In the implementation mode, the leakage pipeline is provided with a break, the break divides the leakage pipeline into two parts, the flow-stopping assembly 31 comprises a connecting assembly 311 and a hole plate 312 located between the connecting assembly 311. The connecting assembly connects the two sections of the leakage pipeline at the break. The hole plate 312 is arranged between the connecting assembly 311, the hole plate 312 is provided with a through hole, and the size of the through hole is smaller than the inner diameter size of the leakage pipeline 21. By arranging the size of the through hole to be smaller than the inner diameter size of the leakage pipeline, the speed and flow of the gas in the leakage pipeline can be controlled, thereby achieving the flow stopping of the gas input from the leakage gas connecting port to the leakage pipeline.

[0049] Exemplarily, Figure 4 is a structural schematic view of the hole plate provided in the embodiment of the utility model, Figure 5 is a sectional view of the hole plate installed on the leakage pipeline provided in the embodiment of the utility model. As Figure 4 and Figure 5As shown, the orifice plate 312 includes a through hole 313. When the high pressure cavity and / or the low pressure cavity of the booster pump leaks, the leaked gas enters the leakage pipeline 21. Since the size of the through hole 313 of the orifice plate 312 is smaller than the inner diameter size of the leakage pipeline 21, the passing speed of the gas at the position of the orifice plate 312 is reduced, the leaked gas from the booster pump 11 is intercepted, thereby increasing the pressure of the gas between the input end of the leakage pipeline 21 and the input end of the interception assembly 31, and improving the measurability of the gas pressure measurement of the gas in the leakage pipeline 21.

[0050] It should be noted that the size of the through hole 313 is not limited in this embodiment. The size can be set according to the structure of the booster pump, the speed of the leaked gas of the booster pump and other factors in actual application. It should be noted that Figure 4 The shape of the orifice plate is not limited, for example, the orifice plate can also be oval, rectangular, etc.

[0051] Optionally, in an implementation, the connecting assembly 311 includes a flange. The flange is also called a flange flange plate or a flange. It is a kind of part for connecting pipes with pipes, and is often used for connecting pipe sections.

[0052] Optionally, in another implementation, the connecting assembly 311 includes a union. The union is a kind of pipe connecting piece, including a nut, a cloud head and a flat joint.

[0053] Optionally, the first gas pressure measuring device 41 is also in communication connection with a control device (not shown in the figure). Figure 1 The first pressure value is transmitted to the control device by the first gas pressure measuring device 41.

[0054] For example, the control device can be a control device operable by an operator, for example, a device arranged in an operation room. The first pressure value is transmitted to the control device by the first gas pressure measuring device, so that the control device can be processed subsequently, for example, the control device issues an alarm to inform the operator to check and troubleshoot the booster pump in time, to determine whether the sealing element in the booster pump is damaged, whether it needs to be replaced, etc.

[0055] The first gas pressure measuring device 41 and the control device can communicate wirelessly or by wired connection. For example, the first gas pressure measuring device 41 and the control device can communicate wirelessly through Bluetooth technology or wireless local area network technology.

[0056] Optionally, the first gas pressure measuring device 41 and the control device are connected by a cable.

[0057] In this implementation, the first gas pressure measuring device and the control device are in wired communication connection, which improves the reliability of communication and the reliability of transmitting the first pressure value.

[0058] Based on Figure 1 As shown in the booster pump leakage detection system 100, in another embodiment, the utility model also provides a booster pump leakage detection system. Exemplary, as Figure 6 As shown, the booster pump leakage detection system 100 can also include gas tank 51 and second gas pressure measuring device 61.

[0059] Gas tank 51 includes gas inlet 511 and overpressure release port 512, the gas inlet 511 of gas tank 51 is connected with the high-pressure gas connection port 118 of booster pump 11, and the overpressure release port 512 of gas tank 51 is connected with the output end of the flow control assembly 31 on the leakage pipeline 21 through the gas pipe 513. The gas tank 51 is used to store the high-pressure gas output by the booster pump 11, when the gas pressure in the gas tank 51 is higher than the preset value, the gas in the gas tank 51 is input into the leakage pipeline 21 through the overpressure release port 512 and the gas pipe 513.

[0060] The second gas pressure measuring device 61 is connected on the leakage pipeline 21 and located between the output end of the gas pipe 513 and the output end of the leakage pipeline 21. The second gas pressure measuring device 61 tests the pressure of the gas between the output end of the gas pipe 513 and the output end of the leakage pipeline 21, obtains the second pressure value, and determines whether the high-pressure gas cavity 113 and / or the low-pressure gas cavity 112 of the booster pump 11 leaks by the first pressure value and the second pressure value.

[0061] Specifically, the real-time output high-pressure gas of the booster pump 11 may exist the problem of unstable gas pressure or insufficient high-pressure gas capacity, therefore, the gas tank 51 is set, the gas inlet 511 of the gas tank 51 is connected with the high-pressure gas connection port 118 of the booster pump 11, for storing the high-pressure gas output by the booster pump 11. The gas tank 51 also includes output gas port 514 for outputting stable high-pressure gas after pressure boosting. In the process of storing high-pressure gas in the gas tank 51, the gas pressure in the gas tank 51 may fluctuate, when the gas pressure in the gas tank 51 is higher than the preset value, in order to ensure the safety of the gas tank 51, part of the gas needs to be released. In this embodiment, the overpressure release port 512 of the gas tank 51 is connected with the output end of the flow control assembly 31 on the leakage pipeline 21 through the gas pipe 513, and part of the gas in the gas tank 51 is input into the leakage pipeline 21 through the overpressure release port 512 and the gas pipe 513.

[0062] In this scenario, the gas in the leakage pipeline 21 includes the gas leaked from the booster pump 11 and the gas released from the gas tank 51. The leakage pipeline 21 is provided with a shut-off assembly 31, which has a shut-off effect on the gas in the leakage pipeline 21. The shut-off assembly 31 divides the leakage pipeline 21 into two sections: between the input end of the leakage pipeline 21 and the input end of the shut-off assembly 31, and between the output end of the shut-off assembly 31 and the output end of the leakage pipeline 21. Due to the shut-off effect of the shut-off assembly 31, the gas flow between the two sides of the shut-off assembly 31 is not large, even under certain pressure difference conditions, and thus, the gas between the input end of the leakage pipeline 21 and the input end of the shut-off assembly 31 is mainly the gas leaked from the booster pump 11, and the gas between the output end of the shut-off assembly 31 and the output end of the leakage pipeline 21 is mainly the gas released from the gas tank 51.

[0063] The second gas pressure measuring device 61 is connected to the leakage pipeline 21 and located between the output end of the gas pipeline 513 and the output end of the leakage pipeline 21, i.e., between the output end of the shut-off assembly 31 and the output end of the leakage pipeline 21. The second gas pressure measuring device 61 tests the pressure of the gas between the output end of the gas pipeline 513 and the output end of the leakage pipeline 21, and obtains a second pressure value. The second pressure value reflects the gas pressure of the gas released from the gas tank, and the first pressure value reflects the gas pressure of the gas leaked from the booster pump. By the first pressure value and the second pressure value, it can be determined whether the high-pressure gas cavity and / or the low-pressure gas cavity of the booster pump leaks.

[0064] Optionally, when the first pressure value is greater than or equal to the second pressure value, the high-pressure gas cavity and / or the low-pressure gas cavity of the booster pump leaks. Alternatively, when the first pressure value is less than the second pressure value, the high-pressure gas cavity and / or the low-pressure gas cavity of the booster pump does not leak.

[0065] The type of the second gas pressure measuring device 61 is not limited in this embodiment, which can be a pressure sensor for detecting gas pressure.

[0066] Optionally, the second gas pressure measuring device 61 is a local gas pressure gauge.

[0067] The booster pump leakage detection system provided by the embodiment comprises a booster pump, a leakage pipeline, a cut-off assembly, a first air pressure measuring device, a gas storage tank and a second air pressure measuring device. The booster pump comprises a sealed low-pressure air cavity, a sealed high-pressure air cavity and a piston structure. The piston structure divides the high-pressure air cavity into a first region and a second region. A leakage air connecting port is arranged on the side wall of the first region, and a high-pressure air connecting port is arranged on the side wall of the second region. The high-pressure air connecting port outputs high-pressure gas generated in the second region. The gas inlet of the gas storage tank is connected with the high-pressure air connecting port, and is used for storing high-pressure gas output by the booster pump. The input end of the leakage pipeline is connected with the leakage air connecting port on the booster pump. The leakage pipeline is provided with the cut-off assembly, the first air pressure measuring device and the second air pressure measuring device. The first air pressure measuring device is located upstream of the cut-off assembly, and the second air pressure measuring device is located downstream of the cut-off assembly. When the air pressure in the gas storage tank is higher than a preset value, the gas in the gas storage tank is input into the leakage pipeline through the overpressure release port and the gas conveying pipeline. By arranging the cut-off assembly, the gas in the leakage pipeline is cut off, the pressure of the gas in the leakage pipeline is increased, and the measurability of the air pressure value is improved. By arranging the first air pressure measuring device, the pressure of the gas leaked from the booster pump in the leakage pipeline is tested, and a first pressure value is obtained. By arranging the second air pressure measuring device, the pressure of the gas leaked from the gas storage tank in the leakage pipeline is tested, and a second pressure value is obtained. Then, whether the booster pump leaks is determined according to the first pressure value and the second pressure value, and the detection of the leakage of the booster pump is realized.

[0068] It should be noted that not all steps and modules in the above processes and device structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as needed. The system structure described in the above embodiments can be a physical structure or a logical structure, that is, some modules can be implemented by the same physical entity, or some modules can be implemented by multiple physical entities, or can be implemented by some components in multiple independent devices.

[0069] In the above embodiments, a hardware module can be implemented by a mechanical method or an electrical method. For example, a hardware module can include permanent and dedicated circuitry or logic (such as a dedicated processor, an FPGA or an ASIC) to complete corresponding operations. A hardware module can also include programmable logic or circuitry (such as a general-purpose processor or other programmable processor), which can be temporarily set by software to complete corresponding operations. The specific implementation method (mechanical method, or permanent and dedicated circuit, or temporarily set circuit) can be determined based on cost and time considerations.

[0070] It is to be noted that the relative terms, such as first and second, and the like, are used herein solely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0071] Finally, it should be noted that the above merely illustrates the preferred embodiments of the present application, and is only used to explain the technical scheme of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. A booster pump leakage detection system (100), characterized in that: include: A booster pump (11), a leakage pipeline (21), a shutoff assembly (31), and a first air pressure measuring device (41); The booster pump (11) comprises: a sealed low-pressure air chamber (112), a sealed high-pressure air chamber (113), and a piston structure (114) arranged in the low-pressure air chamber (112) and the high-pressure air chamber (113); the piston structure (114) separates the high-pressure air chamber (113) into a first area (115) and a second area (116); a leakage air connection port (117) is provided on a side wall of the first area (115), and a high-pressure air connection port (118) is provided on a side wall of the second area (116); a low-pressure air connection port (119) is provided on a side wall of the low-pressure air chamber (112); The leakage pipeline (21) has an input end and an output end, the input end of the leakage pipeline (21) is connected to the leakage gas connection port (117); the shutoff assembly (31) is provided on the leakage pipeline (21), and the first air pressure measuring device (41) is connected to the leakage pipeline (21) and is located between the input end of the leakage pipeline (21) and the input end of the shutoff assembly (31); The shutoff assembly (31) is used to shut off the gas input from the leaking gas connection port (117) into the leaking pipeline (21); the first air pressure measuring device (41) is used to perform a pressure test on the gas between the input end of the leaking pipeline (21) and the input end of the shutoff assembly (31) to obtain a first pressure value.

2. The booster pump leakage detection system according to claim 1, characterized in that: The leakage pipeline (21) is provided with a fracture, and the intercepting assembly (31) comprises a connecting assembly (311) for connecting the fracture and an orifice plate (312) located between the connecting assembly (311); A through hole (313) is provided on the orifice plate (312), and the size of the through hole (313) is smaller than the inner diameter of the leakage pipeline (21).

3. The booster pump leakage detection system according to claim 2, characterized in that: The connection assembly (311) includes a flange or a flexible joint.

4. The booster pump leakage detection system according to claim 1, characterized in that: The piston structure (114) includes a connecting rod (123), a low-pressure piston (120) and a high-pressure piston (121); the connecting rod (123) is arranged to penetrate the low-pressure air chamber (112) and the high-pressure air chamber (113); the low-pressure piston (120) is arranged on the connecting rod (123) and is located in the low-pressure air chamber (112); and the high-pressure piston (121) is arranged on the connecting rod (123) and is located in the high-pressure air chamber (113).

5. The booster pump leakage detection system according to claim 1, characterized in that: The first air pressure measuring device (41) is also communicatively connected to the control device, and the first air pressure measuring device (41) transmits the first pressure value to the control device.

6. The booster pump leakage detection system according to claim 5, characterized in that: The first air pressure measuring device (41) is connected to the control device via a cable.

7. The booster pump leakage detection system according to any one of claims 1 to 6, characterized in that: When the first pressure value is greater than a preset threshold, the high-pressure air chamber (113) and / or the low-pressure air chamber (112) of the booster pump (11) leaks; or, when the first pressure value is less than the preset threshold, the high-pressure air chamber (113) and / or the low-pressure air chamber (112) of the booster pump (11) does not leak.

8. The booster pump leakage detection system according to any one of claims 1 to 6, characterized in that: The booster pump air leakage detection system further includes an air storage tank (51) and a second air pressure measuring device (61); The gas storage tank (51) comprises an air inlet (511) and an overpressure release port (512), the air inlet (511) of the gas storage tank (51) being connected to the high-pressure gas connection port (118) of the booster pump (11), and the overpressure release port (512) of the gas storage tank (51) being connected to the output end of the cut-off assembly (31) on the leakage pipeline (21) via a gas transmission pipe (513); the gas storage tank (51) is used to store the high-pressure gas output by the booster pump (11), and when the gas pressure in the gas storage tank (51) is higher than a preset value, the gas in the gas storage tank (51) is input into the leakage pipeline (21) via the overpressure release port (512) and the gas transmission pipe (513); The second air pressure measuring device (61) is connected to the leakage pipeline (21) and is located between the output end of the gas supply pipe (513) and the output end of the leakage pipeline (21); the second air pressure measuring device (61) performs a pressure test on the gas between the output end of the gas supply pipe (513) and the output end of the leakage pipeline (21) to obtain a second pressure value.

9. The booster pump leakage detection system according to claim 8, characterized in that: The second air pressure measuring device (61) is an on-site air pressure gauge.

10. The booster pump leakage detection system according to claim 8, characterized in that: When the first pressure value is greater than or equal to the second pressure value, the high-pressure air chamber (113) and / or the low-pressure air chamber (112) of the booster pump (11) leaks; or, when the first pressure value is less than the second pressure value, the high-pressure air chamber (113) and / or the low-pressure air chamber (112) of the booster pump (11) does not leak.

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