Pulse conditioning device and fluid delivery system

Abstract

This application discloses a pulse adjustment device and a fluid delivery system, relating to the field of fluid delivery technology. It enables precise adjustment of pulses during fluid delivery, improving delivery efficiency and extending equipment lifespan. The pulse adjustment device includes a balance cylinder and a compression cylinder. The balance cylinder houses a piston assembly, with a flow passage chamber on one side of the piston assembly and an oil passage chamber on the other side. The flow passage chamber is connected to a delivery pipeline. The compression cylinder has an oil storage chamber connected to the oil passage chamber, allowing hydraulic oil in the storage chamber to flow into the oil passage chamber. The storage chamber also stores compressible gas. Fluid flowing from the delivery pipeline into the flow passage chamber exerts a first pressure on one side of the piston assembly, while hydraulic oil flowing from the storage chamber into the oil passage chamber exerts a second pressure on the other side of the piston assembly. Under the influence of these first and second pressures, the piston assembly reciprocates to adjust the inflow rate of fluid from the delivery pipeline into the flow passage chamber. This application is applicable to fluid delivery scenarios.

Description

Technical Field

[0001] This application relates to the field of fluid transport technology, specifically to a pulse regulating device and a fluid transport system. Background Technology

[0002] Under the requirement of sustainable development in mining, backfilling mining has gradually developed into a safe, green, and efficient mining method. During the backfilling process, fluids are often transported through pipelines, such as water to mixing devices, or slurry to designated areas above and below ground for backfilling.

[0003] However, during the transportation of fluids in pipelines, changes in pipeline shape, flow velocity, or friction between the fluid and the pipeline wall can cause variations in the fluid's pressure, velocity, and flow rate. These variations often create pulses, which can not only exacerbate wear on the inner wall of the pipeline, leading to cracks or damage and affecting fluid transportation efficiency and equipment lifespan, but may also generate impact forces that can damage pumps, valves, and other equipment, increasing the equipment failure rate. Utility Model Content

[0004] In view of this, this application provides a pulse regulating device and a fluid conveying system, which can precisely regulate the pulse during the fluid conveying process, thereby improving the fluid conveying efficiency and the service life of the equipment.

[0005] In a first aspect, embodiments of this application provide a pulse regulating device, comprising: a balance cylinder, wherein a piston assembly is disposed within the balance cylinder, and a flow passage cavity is formed on one side of the piston assembly, and an oil passage cavity is formed on the other side of the piston assembly; the flow passage cavity is connected to a delivery pipeline; a compression cylinder, wherein the compression cylinder has an oil storage cavity, which is connected to the oil passage cavity so that hydraulic oil in the oil storage cavity can flow into the oil passage cavity, and the oil storage cavity also stores compressible gas; wherein fluid flowing into the flow passage cavity from the delivery pipeline generates a first pressure on one side of the piston assembly, and hydraulic oil flowing into the oil passage cavity from the oil storage cavity generates a second pressure on the other side of the piston assembly, and under the action of the first pressure and the second pressure, the piston assembly is capable of reciprocating to regulate the inflow rate of fluid flowing into the flow passage cavity from the delivery pipeline.

[0006] In one specific embodiment, the piston assembly includes a first piston, a second piston, and a piston rod, wherein the first piston is connected to one end of the piston rod, and the second piston is connected to the other end of the piston rod; wherein the flow passage is located on the side of the first piston opposite to the piston rod, and the oil passage is located on the side of the second piston opposite to the piston rod.

[0007] In one specific implementation, the balance cylinder includes a first cylinder body and a second cylinder body, the first piston is disposed in the first cylinder body, and the second piston is disposed in the second cylinder body; the piston rod passes through at least partially through the first cylinder body and at least partially through the second cylinder body; wherein, the flow passage cavity is formed in the first cylinder body, and the oil passage cavity is formed in the second cylinder body.

[0008] In one specific implementation, the compression cylinder is further provided with a pressure regulating valve to regulate the pressure of the hydraulic oil in the oil storage chamber of the compression cylinder.

[0009] In one specific implementation, the compression cylinder is further provided with a pressure monitoring device to monitor the pressure of the hydraulic oil in the oil storage chamber of the compression cylinder.

[0010] In one specific implementation, the balance cylinder is provided with a flow port, which is connected to the flow cavity, so that by connecting the flow port and the conveying pipe, the flow cavity can be connected to the conveying pipe.

[0011] In one specific implementation, the balance cylinder is provided with an oil inlet, which is connected to the oil passage chamber; the compression cylinder is provided with an oil outlet, which is connected to the oil storage chamber; and an oil supply pipe is provided between the oil inlet and the oil outlet to connect the oil storage chamber and the oil passage chamber.

[0012] Secondly, embodiments of this application provide a fluid delivery system, including: a delivery pump, a delivery pipeline, and a pulse regulating device; the delivery pump delivers fluid through the delivery pipeline; the delivery pipeline is connected to the flow passage of the pulse regulating device, so that the fluid in the delivery pipeline can flow into the delivery flow passage, wherein the pulse regulating device is any of the pulse regulating devices described in the embodiments of this application.

[0013] In one specific implementation, the delivery pipeline is provided with a check valve between the delivery pump and the pulse regulating device.

[0014] The pulse regulating device and fluid conveying system provided in the embodiments of this application include: a balance cylinder and a compression cylinder. The balance cylinder is provided with a piston assembly, and a flow passage cavity is formed on one side of the piston assembly, and an oil passage cavity is formed on the other side of the piston assembly. The flow passage cavity can be connected to a conveying pipeline. The compression cylinder has an oil storage cavity, which is connected to the oil passage cavity so that hydraulic oil in the oil storage cavity can flow into the oil passage cavity. The oil storage cavity also stores compressible gas. The fluid flowing into the flow passage cavity from the conveying pipeline generates a first pressure on one side of the piston assembly, and the hydraulic oil flowing into the oil passage cavity from the oil storage cavity generates a second pressure on the other side of the piston assembly. Under the action of the first pressure and the second pressure, the piston assembly can reciprocate to regulate the inflow of fluid from the conveying pipeline into the flow passage cavity, thereby precisely regulating the pulse during the fluid conveying process, improving the fluid conveying efficiency and the service life of the equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a pulse regulation device and a fluid transport system provided in the embodiments of this application.

[0017] Explanation of key figure labels:

[0018] 100-Fluid delivery system; 10-Pulse regulating device; 11-Balance cylinder; 110-Piston assembly; 1101-First piston; 1102-Second piston; 1103-Piston rod; 111-Flow passage chamber; 112-Oil passage chamber; 113-First cylinder body; 114-Second cylinder body; 12-Compression cylinder; 120-Oil storage chamber; 121-Pressure regulating valve; 122-Pressure monitoring element; 13-Oil delivery pipeline; 20-Delivery pump; 30-Delivery pipeline; 40-Check valve. Detailed Implementation

[0019] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0020] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0021] During fluid transport through pipelines, changes in pipeline shape, flow velocity, or friction between the fluid and pipeline walls cause variations in fluid pressure, velocity, and flow rate. These changes often create pulses, which not only accelerate wear on the pipeline inner wall, leading to cracks or damage and affecting fluid transport efficiency and equipment lifespan, but may also generate impact forces, damaging pumps, valves, and other equipment, increasing equipment failure rates. To address these issues, the first aspect is... Figure 1 As shown, an embodiment of this application provides a pulse regulating device 10, which may include a balance cylinder 11 and a compression cylinder 12.

[0022] The balance cylinder 11 is provided with a piston assembly 110, and the balance cylinder 11 has a flow passage cavity 111 on one side of the piston assembly 110 and an oil passage cavity 112 on the other side of the piston assembly 110; the flow passage cavity 111 can be connected to the delivery pipe 30.

[0023] In this embodiment, the balance cylinder 11 can be a split cylinder, for example, the balance cylinder 11 can include two cylinders, and the piston assembly 110 can reciprocate within the two cylinders; the balance cylinder 11 can also be an integral cylinder, for example, the balance cylinder 11 is a single cylinder, and the piston assembly 110 can reciprocate within the single cylinder.

[0024] The piston assembly 110 can be configured according to the specific structure of the balance cylinder 11. For example, for a balance cylinder 11 containing two cylinders, the piston assembly 110 can contain multiple pistons, such as two pistons. Each piston is respectively located in one cylinder. The two pistons can be connected by a connector, such as a piston rod 1103, so that the two pistons can reciprocate in the two cylinders respectively under the linkage action of the piston rod 1103.

[0025] The flow passage 111 can be connected to the delivery pipe 30, so that the fluid transported in the delivery pipe 30 can flow into the flow passage 111. Moreover, the piston assembly 110 reciprocates in the balance bar, which can change the volume of the flow passage 111, thereby adjusting the flow rate of the fluid flowing from the delivery pipe 30 into the flow passage 111, and realizing the regulation of the fluid pulse in the delivery pipe 30.

[0026] The compression cylinder 12 has an oil storage chamber 120, which is connected to an oil passage chamber 112 so that hydraulic oil in the oil storage chamber 120 can flow into the oil passage chamber 112. The oil storage chamber 120 also stores compressible gas. The fluid flowing into the flow passage chamber 111 from the delivery pipe 30 generates a first pressure on one side of the piston assembly 110, and the hydraulic oil flowing into the flow passage chamber 112 from the oil storage chamber 120 generates a second pressure on the other side of the piston assembly 110. Under the action of the first and second pressures, the piston assembly 110 can reciprocate to adjust the inflow rate of the fluid flowing into the flow passage chamber 111 from the delivery pipe 30.

[0027] In this embodiment, the flow passage 111 can be connected to the delivery pipe 30, so that the fluid flowing into the flow passage 111 from the delivery pipe 30 generates a first pressure on one side of the piston assembly 110. The oil storage chamber 120 of the compression cylinder 12 can store hydraulic oil, and the hydraulic oil in the oil storage chamber 120 can flow into the flow passage 112. Moreover, the oil storage chamber 120 also stores compressible gas, which can generate gas pressure on the surface of the hydraulic oil in the oil storage chamber 120. Thus, under the action of the hydraulic oil pressure and the gas pressure, the hydraulic oil flowing into the flow passage 112 from the oil storage chamber 120 can generate a second pressure on the other side of the piston assembly 110. Under the action of the first pressure and the second pressure, the piston assembly 110 can reciprocate to adjust the inflow rate of the fluid flowing into the flow passage 111 from the delivery pipe 30.

[0028] For example, when the conveying pipe 30 is normally conveying fluid, the first pressure and the second pressure on both sides of the piston assembly 110 are balanced, and the piston assembly 110 is in the initial equilibrium position. If the pressure, velocity, or flow rate of the fluid in the conveying pipe 30 decreases, the first pressure exerted on one side of the piston assembly 110 by the fluid flowing from the conveying pipe 30 into the flow passage 111 decreases, causing the piston assembly 110 to move from the initial equilibrium position toward one end of the balance cylinder 11 to reach a new equilibrium position. The volume of the flow passage 111 decreases, the volume of the oil passage 112 increases, the gas volume in the compression cylinder 12 increases, and the gas pressure decreases. The inflow of fluid from the conveying pipe 30 into the flow passage 111 decreases, that is, the fluid flowing from the conveying pipe... The fluid flowing into the flow passage 111 flows back to the delivery pipe 30 to eliminate the flow change in the fluid within the delivery pipe 30. If the pressure, velocity, or flow rate of the fluid in the delivery pipe 30 increases, the first pressure exerted on one side of the piston assembly 110 by the fluid flowing into the flow passage 111 from the delivery pipe 30 increases, causing the piston assembly 110 to move from the initial equilibrium position to the other end of the balance cylinder 11 to reach a new equilibrium position. The volume of the flow passage 111 increases, the volume of the oil passage 112 decreases, the gas volume in the compression cylinder 12 decreases, the gas pressure increases, and the inflow of fluid from the delivery pipe 30 into the flow passage 111 increases to eliminate the flow change in the fluid within the delivery pipe 30.

[0029] In this embodiment, the compressible gas can specifically be air. The flow chamber 111 of the balance cylinder 11 can be made of a high-strength wear-resistant material to withstand the impact of high-pressure slurry and ensure long-term durability. The oil passage chamber 112 of the balance cylinder 11 can be made of a high-strength, high-pressure-resistant material to withstand high hydraulic oil pressure and ensure durability and reliability. The piston assembly 110 can be made of wear-resistant material and forms a tight fit with the flow chamber 111 and the oil passage chamber 112 to ensure sealing, reduce leakage, and improve working efficiency. The compression cylinder 12 is made of a high-strength, high-pressure-resistant material and ensures sealing so that the gas in the compression cylinder 12 can automatically adjust the compression degree according to pressure changes.

[0030] The pulse regulating device 10 provided in the embodiments of this application includes: a balance cylinder 11 and a compression cylinder 12. The balance cylinder 11 has a piston assembly 110, and a flow passage chamber 111 is formed on one side of the piston assembly 110, while an oil passage chamber 112 is formed on the other side of the piston assembly 110. The flow passage chamber 111 is connected to a delivery pipe 30. The compression cylinder 12 has an oil storage chamber 120, which is connected to the oil passage chamber 112, allowing hydraulic oil in the oil storage chamber 120 to flow into the oil passage chamber 112. The piston assembly 110 also stores compressible gas. The fluid flowing into the flow chamber 111 from the delivery pipe 30 generates a first pressure on one side of the piston assembly 110, and the hydraulic oil flowing into the flow chamber 112 from the oil storage chamber 120 generates a second pressure on the other side of the piston assembly 110. Under the action of the first and second pressures, the piston assembly 110 can reciprocate to adjust the flow rate of the fluid flowing into the flow chamber 111 from the delivery pipe 30, thereby precisely adjusting the pulses during the fluid delivery process, improving the fluid delivery efficiency and the service life of the equipment.

[0031] Optionally, in one embodiment of this application, the piston assembly 110 includes a first piston 1101, a second piston 1102, and a piston rod 1103. The first piston 1101 is connected to one end of the piston rod 1103, and the second piston 1102 is connected to the other end of the piston rod 1103. A flow passage chamber 111 is located on the side of the first piston 1101 opposite to the piston rod 1103, and an oil passage chamber 112 is located on the side of the second piston 1102 opposite to the piston rod 1103. In this embodiment, the piston assembly 110 includes a first piston 1101 and a second piston 1102. The first piston 1101 may be disposed at one end of the balance cylinder 11 and form the flow passage chamber 111, and the second piston 1102 may be disposed at the other end of the balance cylinder 11 and form the oil passage chamber 112. The first piston 1101 and the second piston 1102 are connected by a piston rod 1103, so that the first piston 1101 and the second piston 1102 have a preset distance. In this way, the first piston 1101 can directly contact the fluid, such as slurry, entering the flow chamber 111 from the delivery pipe 30, and the second piston 1102 can directly contact the hydraulic oil entering the oil passage chamber 112. This avoids the delivered fluid, such as slurry, from affecting the cleanliness of the hydraulic oil and ensures the reliability of the piston assembly 110 reciprocating within the balance cylinder 11.

[0032] Optionally, in one embodiment of this application, the balance cylinder 11 includes a first cylinder body 113 and a second cylinder body 114, a first piston 1101 is disposed in the first cylinder body 113, and a second piston 1102 is disposed in the second cylinder body 114; the piston rod 1103 is at least partially inserted through the first cylinder body 113 and at least partially inserted through the second cylinder body 114; wherein, the flow passage chamber 111 is formed in the first cylinder body 113, and the oil passage chamber 112 is formed in the second cylinder body 114.

[0033] It is understood that configuring the balance cylinder 11 to include a first cylinder body 113 and a second cylinder body 114, with the first piston 1101 disposed within the first cylinder body 113 to form a flow passage chamber 111, and the second piston 1102 disposed within the second cylinder body 114 to form an oil passage chamber 112, can further prevent the fluid flowing into the flow passage chamber 111, such as slurry, from affecting the oil passage chamber 112 and the hydraulic oil, ensuring the operational reliability of the second piston 1102 and the second cylinder body 114. Furthermore, configuring the balance cylinder 11 to include a first cylinder body 113 and a second cylinder body 114 facilitates configuring the first piston 1101 and the first cylinder body 113 in a working environment suitable for the fluid being transported, such as slurry, and facilitates configuring the second piston 1102 and the second cylinder body 114 in a working environment suitable for the hydraulic oil. For example, the first piston 1101 and the first cylinder 113 are configured to have high strength and high wear resistance to withstand the impact of high-pressure slurry and ensure long-term durability; the second piston 1102 and the second cylinder 114 are configured to have high sealing performance, high strength and high fitting precision to improve the working reliability and motion accuracy of the hydraulic transmission component formed by the second piston 1102 and the second cylinder 114 and improve its service life.

[0034] In this embodiment, one end of the piston rod 1103 can be inserted into the first cylinder 113 near the second cylinder 114 and connected to the first piston 1101 disposed in the first cylinder 113. The other end of the piston rod 1103 can be inserted into the second cylinder 114 near the first cylinder 113 and connected to the second piston 1102 disposed in the second cylinder 114. Under the linkage action of the piston rod 1103, the first piston 1101 can reciprocate within the first cylinder 113 to form a flow passage chamber 111, and the second piston 1102 can reciprocate within the second cylinder 114 to form an oil passage chamber 112.

[0035] Optionally, in one embodiment of this application, the compression cylinder 12 is further provided with a pressure regulating valve 121 to regulate the pressure of the hydraulic oil in the oil storage chamber 120 of the compression cylinder 12. In this embodiment, a pressure regulating valve 121 can be provided on the oil inlet pipe of the compression cylinder 12 to regulate the pressure of the hydraulic oil in the oil storage chamber 120 by adjusting the amount of hydraulic oil entering the oil storage chamber 120 of the compression cylinder 12. In other embodiments, a pressure regulating valve 121 can also be provided on the air inlet pipe of the compression cylinder 12 to regulate the pressure of the hydraulic oil in the oil storage chamber 120 by adjusting the amount of air entering the oil storage chamber 120 of the compression cylinder 12. For example, if the flow passage 111 formed by the balance cylinder 11 on one side of the piston assembly 110 is always in a larger volume, while the oil passage 112 formed by the balance cylinder 11 on the other side of the piston assembly 110 is always in a smaller volume, the pressure of the hydraulic oil in the oil reservoir 120 can be increased by adjusting the pressure regulating valve 121 to increase the damping; if the flow passage 111 formed by the balance cylinder 11 on one side of the piston assembly 110 is always in a smaller volume, while the oil passage 112 formed by the balance cylinder 11 on the other side of the piston assembly 110 is always in a larger volume, the pressure of the hydraulic oil in the oil reservoir 120 can be decreased by adjusting the pressure regulating valve 121 to decrease the damping. In this way, the second pressure generated by the hydraulic oil flowing from the oil reservoir 120 into the oil passage 112 on the other side of the piston assembly 110 can be matched with the first pressure generated by the fluid flowing from the delivery pipe 30 into the flow passage 111 on one side of the piston assembly 110, thereby improving the regulating capability and the accuracy of the pulse regulating device 10.

[0036] Optionally, in one embodiment of this application, the compression cylinder 12 is further provided with a pressure monitoring element 122 to monitor the pressure of the hydraulic oil in the oil reservoir 120 of the compression cylinder 12. The pressure monitoring element 122 can specifically be a pressure gauge. Using the pressure monitoring element 122, the pressure of the hydraulic oil in the oil reservoir 120 can be monitored. Based on the pressure of the hydraulic oil in the oil reservoir 120 and combined with the actual working conditions, the pressure regulating valve 121 can be adjusted to adjust the pressure of the hydraulic oil in the oil reservoir 120. This ensures that the second pressure generated by the hydraulic oil flowing from the oil reservoir 120 into the flow chamber 112 on the other side of the piston assembly 110 is matched with the first pressure generated by the fluid flowing from the delivery pipe 30 into the flow chamber 111 on one side of the piston assembly 110, thus meeting the requirements of the actual working conditions.

[0037] Optionally, in one embodiment of this application, the balance cylinder 11 is provided with a flow port, which is connected to the flow cavity 111, so that by connecting the flow port and the conveying pipe 30, the flow cavity 111 can be connected to the conveying pipe 30. The flow port can be provided at one end of the balance cylinder 11. For example, the flow port of the balance cylinder 11 can be provided at the end of the first cylinder body 113, and the flow port can be directly connected to an opening provided on the conveying pipe 30. In some other embodiments, a valve body can also be provided at the flow port to control the connection between the flow cavity 111 and the conveying pipe 30.

[0038] Optionally, in one embodiment of this application, the balance cylinder 11 is provided with an oil inlet, which is connected to the oil passage chamber 112; the compression cylinder 12 is provided with an oil outlet, which is connected to the oil storage chamber 120. An oil supply pipe 13 is provided between the oil inlet and the oil outlet, so that the oil storage chamber 120 is connected to the oil passage chamber 112. An oil inlet can be provided at the other end of the balance cylinder 11. For example, the oil inlet of the balance cylinder 11 can be provided at the end of the second cylinder body 114. The oil inlet can be directly connected to the oil outlet of the compression cylinder 12 via the oil supply pipe 13. In some other embodiments, a valve body can also be provided on the oil inlet, the oil outlet, or the oil supply pipe 13 to control the connection between the oil passage chamber 112 and the oil storage chamber 120.

[0039] Secondly, such as Figure 1 As shown, an embodiment of this application provides a fluid delivery system 100, which may include: a delivery pump 20, a delivery pipeline 30, and a pulse regulating device 10; the delivery pump 20 delivers fluid through the delivery pipeline 30; the delivery pipeline 30 is connected to the flow passage 111 of the pulse regulating device 10 so that the fluid in the delivery pipeline 30 can flow into the delivery flow passage 111, wherein the pulse regulating device 10 is any of the pulse regulating devices 10 described in the embodiments of this application.

[0040] During normal fluid transport via the delivery pipe 30, the first and second pressures on both sides of the piston assembly 110 are balanced, and the piston assembly 110 is in its initial equilibrium position. If the fluid transport state within the delivery pipe 30 changes, such as a change in the speed of the delivery pump 20 or the opening and closing of the regulating valve on the delivery pipe 30, causing disturbance and pulses in the fluid transport, the pressure, velocity, or flow rate of the fluid in the delivery pipe 30 decreases. This reduces the first pressure exerted on one side of the piston assembly 110 by the fluid flowing from the delivery pipe 30 into the flow passage 111. Consequently, the piston assembly 110 moves from its initial equilibrium position towards one end of the balance cylinder 11 to reach a new equilibrium position. The volume of the flow passage 111 decreases, the volume of the oil passage 112 increases, the gas volume in the compression cylinder 12 increases, and the gas pressure... If the flow rate decreases, the flow volume of fluid flowing from the delivery pipe 30 into the flow passage 111 decreases, meaning the fluid flowing from the delivery pipe 30 into the flow passage 111 flows back into the delivery pipe 30, thus eliminating the change in fluid flow within the delivery pipe 30. If the pressure, velocity, or flow rate of the fluid within the delivery pipe 30 increases, the first pressure exerted by the fluid flowing from the delivery pipe 30 into the flow passage 111 on one side of the piston assembly 110 increases, causing the piston assembly 110 to move from its initial equilibrium position towards the other end of the balance cylinder 11 to reach a new equilibrium position. The volume of the flow passage 111 increases, the volume of the oil passage 112 decreases, the gas volume in the compression cylinder 12 decreases, and the gas pressure increases. This increases the flow volume of fluid flowing from the delivery pipe 30 into the flow passage 111, thus eliminating the change in fluid flow within the delivery pipe 30, thereby precisely regulating the pulses generated during fluid delivery.

[0041] The fluid delivery system 100 provided in the embodiments of this application is equipped with a pulse regulating device 10, including: a balance cylinder 11 and a compression cylinder 12. The balance cylinder 11 is provided with a piston assembly 110, and a flow passage cavity 111 is formed on one side of the piston assembly 110, and an oil passage cavity 112 is formed on the other side of the piston assembly 110. The flow passage cavity 111 can be connected to the delivery pipeline 30. The compression cylinder 12 has an oil storage cavity 120, which is connected to the oil passage cavity 112, so that the hydraulic oil in the oil storage cavity 120 can flow into the oil passage cavity 112. 12. The oil storage chamber 120 also stores compressible gas; wherein, the fluid flowing into the flow passage chamber 111 from the delivery pipe 30 generates a first pressure on one side of the piston assembly 110, and the hydraulic oil flowing into the flow passage chamber 112 from the oil storage chamber 120 generates a second pressure on the other side of the piston assembly 110. Under the action of the first pressure and the second pressure, the piston assembly 110 can reciprocate to adjust the inflow of fluid from the delivery pipe 30 into the flow passage chamber 111, thereby precisely adjusting the pulse during the fluid delivery process, improving the fluid delivery efficiency and the service life of the equipment.

[0042] Optionally, in one embodiment of this application, a check valve 40 is provided in the delivery pipeline 30 between the delivery pump 20 and the pulse regulating device 10. The check valve 40 ensures that the fluid in the delivery pipeline 30 flows in a single direction, preventing reverse flow from causing malfunctions or accidents to the delivery pump 20, and helps to ensure the pressure stability of the fluid delivered in the delivery pipeline 30.

[0043] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "inner," and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. "Multiple" refers to at least two.

[0044] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0045] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0046] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in another embodiment" appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0047] The embodiments of this application have been described in detail above. Those skilled in the art can design and modify the device and its usage within the scope of this application according to the on-site construction conditions.

[0048] The various embodiments in this specification are described in a related manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pulse adjustment device, characterized in that, include: A balance cylinder, wherein a piston assembly is provided inside the balance cylinder, and a flow passage cavity is formed on one side of the piston assembly, and an oil passage cavity is formed on the other side of the piston assembly; the flow passage cavity can be connected to a delivery pipeline. A compression cylinder having an oil storage chamber connected to an oil passage chamber, so that hydraulic oil in the oil storage chamber can flow into the oil passage chamber, and the oil storage chamber also stores compressible gas. The fluid flowing into the flow chamber from the delivery pipe generates a first pressure on one side of the piston assembly, and the hydraulic oil flowing into the flow chamber from the oil storage chamber generates a second pressure on the other side of the piston assembly. Under the action of the first pressure and the second pressure, the piston assembly can reciprocate to adjust the inflow rate of the fluid flowing into the flow chamber from the delivery pipe.

2. The pulse adjustment device according to claim 1, characterized in that, The piston assembly includes a first piston, a second piston, and a piston rod. The first piston is connected to one end of the piston rod, and the second piston is connected to the other end of the piston rod. The flow passage is located on the side of the first piston away from the piston rod, and the oil passage is located on the side of the second piston away from the piston rod.

3. The pulse adjustment device according to claim 2, characterized in that, The balance cylinder includes a first cylinder body and a second cylinder body, wherein the first piston is disposed in the first cylinder body and the second piston is disposed in the second cylinder body; the piston rod passes through at least part of the first cylinder body and at least part of the second cylinder body; wherein the flow passage cavity is formed in the first cylinder body and the oil passage cavity is formed in the second cylinder body.

4. The pulse adjustment device according to claim 1, characterized in that, The compression cylinder is also equipped with a pressure regulating valve to regulate the pressure of the hydraulic oil in the oil storage chamber of the compression cylinder.

5. The pulse adjustment device according to claim 1, characterized in that, The compression cylinder is also equipped with a pressure monitoring device to monitor the pressure of the hydraulic oil in the oil storage chamber of the compression cylinder.

6. The pulse adjustment device according to claim 1, characterized in that, The balance cylinder is provided with a flow port, which is connected to the flow cavity, so that by connecting the flow port and the conveying pipe, the flow cavity can be connected to the conveying pipe.

7. The pulse adjustment device according to claim 1, characterized in that, The balance cylinder is provided with an oil inlet, which is connected to the oil passage chamber; the compression cylinder is provided with an oil outlet, which is connected to the oil storage chamber; an oil supply pipe is provided between the oil inlet and the oil outlet to connect the oil storage chamber and the oil passage chamber.

8. A fluid transport system, characterized in that, include: Delivery pumps, delivery pipelines, pulse regulating devices; The delivery pump delivers fluid through the delivery pipeline; The delivery pipe is connected to the flow passage of the pulse regulating device so that the fluid in the delivery pipe can flow into the delivery flow passage, wherein the pulse regulating device is the pulse regulating device according to any one of claims 1-7.

9. The fluid transport system according to claim 8, characterized in that, The delivery pipeline is equipped with a check valve between the delivery pump and the pulse regulating device.

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