Ball receiving and serving device, ball receiving and serving system and control method of ball receiving and serving system

Abstract

The invention relates to the field of energy pipeline cleaning, in particular to a ball receiving and serving device, a ball receiving and serving system and a control method of the ball receiving and serving system.The ball receiving barrel, the ball storage barrel, the ball serving barrel and the ball containing barrel of the ball receiving and serving device are communicated with a four-way structure in a matched mode, and valves are arranged at the ends of the ball receiving barrel and the ball serving barrel; the end portions of the ball storage cylinder and the ball placing cylinder are covered with blind plates, the ball storage cylinder is provided with a valve used for discharging fluid, the ball placing cylinder is provided with a valve used for feeding the fluid, the communication state of the device body is changed through different valves, the deployment area of the ball receiving and sending device is reduced, the land cost is saved, and the number of auxiliary detection devices is reduced. The installation and maintenance cost of the equipment is saved; the device body switches the ball receiving state and the ball serving state through cooperation of the valve, and control is easy; the invention further relates to a ball receiving and serving system adopting the ball receiving and serving device and a control method of the ball receiving and serving system, and the ball receiving and serving operation process on the transmission and distribution station is optimized by adopting the ball receiving and serving system.

Description

Technical Field

[0001] The present invention relates to the field of energy pipeline cleaning, and particularly relates to a pigging device, a pigging system and a control method for the pigging system. Background Art

[0002] In the oil and gas industry, it is necessary to regularly maintain the transportation pipelines to ensure the long-term stable operation of the pipelines. Due to the excessive length of the oil and gas transportation pipelines, segmental cleaning is time-consuming and laborious, and the long-term cut-off of pipeline supply has a great impact on the downstream. Therefore, a pigging device is used to clean the pipelines. The pigging device pushes the cleaning ball into the pipeline, and the cleaning ball is pushed by the fluid in the pipeline. During the movement of the cleaning ball, the cleaning ball continuously abuts against the inner wall of the pipeline, scrapes off the dirt attached to the inner wall of the pipeline, and pushes the dirt into the downstream pigging device.

[0003] However, for the currently used pigging devices, it is necessary to separately arrange the pig receiver and the pig launcher at the distribution station, so that the pig receiver receives the cleaning balls from the upstream, and the pig launcher sends the cleaning balls to the downstream. To ensure the safe operation of the device, pressure gauges, thermometers and other auxiliary monitoring devices need to be separately deployed for the pig receiver and the pig launcher. Both the pig receiver and the pig launcher need to be separately equipped with auxiliary monitoring devices, resulting in a high deployment cost and a complex maintenance process for the pigging device; moreover, due to the explosion risk in the oil and gas production and transportation environment, sufficient safety distances need to be reserved when arranging the pig receiver and the pig launcher, resulting in a large overall floor area of the pigging device.

[0004] Therefore, there is an urgent need for a technical solution to solve the technical problems of the large floor area and high deployment cost of the currently independently operating pig receiver and pig launcher at the distribution station. Summary of the Invention

[0005] The purpose of the present invention is to provide a pigging device, a pigging system and a control method for the pigging system, aiming at the technical problems of the large floor area and high deployment cost of the currently independently operating pig receiver and pig launcher at the distribution station.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A ball receiving and sending device comprises a device body, wherein the device body comprises a ball receiving cylinder, a ball storage cylinder, a ball sending cylinder, a ball placing cylinder and a cross-connected four-way structure, wherein the ball receiving cylinder, the ball storage cylinder, the ball sending cylinder and the ball placing cylinder are respectively adapted and connected with the four-way structure, the axis of the ball receiving cylinder and the ball storage cylinder are connected, and the axis of the ball sending cylinder and the ball placing cylinder are connected; the ends of the ball storage cylinder and the ends of the ball placing cylinder are both covered with blind plates, a first control valve is arranged at the end of the ball sending cylinder, and a second control valve is arranged at the end of the ball receiving cylinder; the ball storage cylinder is provided with a third control valve for communicating with the internal space of the ball storage cylinder, and the ball placing cylinder is provided with a fourth control valve for communicating with the internal space of the ball placing cylinder.

[0007] A ball receiving and sending device of the present invention is respectively connected with a ball receiving cylinder, a ball storage cylinder, a ball sending cylinder and a ball placing cylinder on a four-way structure. The axis lines of the ball receiving cylinder and the ball storage cylinder are connected, and the axis lines of the ball sending cylinder and the ball placing cylinder are connected, so that the cleaning balls collected by the ball receiving cylinder can be intercepted in the ball storage cylinder, and the cleaning balls put in from the ball placing cylinder can be pushed into the sending cylinder in a straight line, and the ball receiving operation and the ball sending operation can be completed in the device body; the ends of the ball storage cylinder and the ends of the ball placing cylinder are covered with blind plates, and the blind plates seal the device body to ensure the safe operation of the ball receiving and sending device and avoid leakage of flammable and explosive substances; a first control valve is provided at the end of the ball serving cylinder, a second control valve is provided at the end of the ball receiving cylinder, a third control valve for communicating with the internal space of the ball storage cylinder is provided at the ball storage cylinder, and a fourth control valve for communicating with the internal space of the ball placing cylinder is provided at the ball placing cylinder; When collecting balls, the second control valve and the third control valve are opened, and the first control valve and the fourth control valve are closed, so that the fluid flows through the ball receiving cylinder and the ball storage cylinder, thereby intercepting the cleaning balls in the upstream pipeline in the ball storage cylinder; when serving balls, the first control valve and the fourth control valve are opened, and the second control valve and the third control valve are closed, so that the fluid flows through the ball placing cylinder and the ball serving cylinder, thereby pushing the cleaning balls placed in the serving section into the downstream pipeline; wherein, the first control valve is used to connect the downstream pipeline to discharge the cleaning balls in the ball serving cylinder, the second control valve is used to connect the upstream pipeline to collect the balls from the upstream, the third control valve is used to discharge the fluid in the device body, and the fourth control valve is used to inject fluid into the device body; the ball collecting operation and the ball serving operation can be completed by using the ball receiving and serving device, and the ball receiving and serving device occupies less space and is more convenient to operate.

[0008] As a preferred solution of the present invention, two intersecting circular channels are arranged inside the four-way structure. The inner wall of the circular channel is smooth, so that the cleaning ball can pass through more easily; the two circular channels intersect and intersect to form a "cross" structure, or the two circular channels intersect and intersect to form an "X" structure.

[0009] As a preferred embodiment of the present invention, the four-way structure includes four connectors. At least one through hole is provided on the side wall of each connector, and the through hole penetrates the circular channel. A rod-shaped structural member can be adaptively arranged in the through hole, and the rod-shaped structural member is used to limit the movement path of the cleaning ball. The four-way structure has four connectors, which are respectively connected to the ball receiving cylinder, the ball storage cylinder, the ball sending cylinder and the ball placing cylinder. The through holes on the side walls of each connector are arranged radially along the circular channel; when not in use, bolts can be arranged in the through holes for sealing; when the ball receiving operation needs to be carried out, the bolts on the four-way structure on the side of the ball sending cylinder and the ball placing cylinder are removed and replaced with rod-shaped structural members. The rod-shaped structural members block the path of the cleaning ball entering the ball sending cylinder and the ball placing cylinder, so that the cleaning ball can only enter the ball storage cylinder from the ball receiving cylinder, and the cleaning ball is prevented from entering the ball receiving cylinder and the ball storage cylinder; when the ball sending operation needs to be carried out, the bolts on the four-way structure on the side of the ball receiving cylinder and the ball storage cylinder are removed and replaced with rod-shaped structural members. The rod-shaped structural members block the path of the cleaning ball entering the ball receiving cylinder and the ball storage cylinder, so that the cleaning ball can only move in the ball placing cylinder and the ball sending cylinder, and the cleaning ball is prevented from entering the ball storage cylinder and the ball receiving cylinder; the rod-shaped structural member is threadedly connected to the through hole for sealing.

[0010] As a preferred embodiment of the present invention, the diameter of the circular channel, the inner diameter of the ball storage cylinder and the inner diameter of the ball placing cylinder are all larger than the diameter of the cleaning ball. The third control valve is arranged on the side wall of the ball storage cylinder, and the fourth control valve is arranged on the side wall of the ball placing cylinder. The diameter of the circular channel, the inner diameter of the ball storage cylinder and the inner diameter of the ball placing cylinder are all larger than the diameter of the cleaning ball, so that after the cleaning ball enters the ball placing cylinder and the ball storage cylinder, the fluid can flow through the gap between the cleaning ball and the ball placing cylinder or the ball storage cylinder, and the fluid finally discharges from the third control valve out of the device body.

[0011] As a preferred embodiment of the present invention, both the ball receiving cylinder and the ball sending cylinder include a cylindrical structural member. The cylindrical structural member includes a first cylinder, a transition section and a second cylinder. The two ends of the transition section are respectively adaptively connected to the first cylinder and the second cylinder. The first cylinder is connected to the four-way structure, and the second cylinder is connected to the second control valve or the first control valve; the inner diameter of the first cylinder is larger than the inner diameter of the second cylinder, and the inner diameter of the second cylinder is adapted to the inner diameter of the cleaning ball. The cylindrical structural member is composed of a first cylinder, a transition section and a second cylinder. The first cylinder, the transition section and the second cylinder are successively adaptively connected. The inner diameter of the first cylinder is larger than the inner diameter of the second cylinder, and the inner diameter of the second cylinder is adapted to the inner diameter of the cleaning ball. The inner diameter of one end of the transition section is adapted to the inner diameter of the first cylinder, and the inner diameter of the other end is adapted to the inner diameter of the second cylinder. The transition section is a conical cylinder; the inner diameter of the second cylinder is adapted to the inner diameter of the upstream pipeline or the downstream pipeline; so that the cleaning ball can enter the downstream pipeline under the action of the fluid thrust, or the cleaning ball from the upstream pipeline can more easily enter the device body and be intercepted.

[0012] As a preferred embodiment of the present invention, chamfers are provided at the inner wall corners of the four-way structure. The provision of chamfers at the corners makes it difficult for the cleaning ball to get stuck at the intersection of the four-way structure and avoids the cleaning ball being cut by impacting the corners; chamfers are provided at all four corners on the inner wall of the four-way structure.

[0013] As a preferred embodiment of the present invention, a sewage valve and a vent valve are provided on the four-way structure, and both the sewage valve and the vent valve communicate with the internal space of the four-way structure. The sewage valve is provided to discharge the dirt pushed into the device body by the upstream pipeline, and the vent valve is provided to discharge the air in the device body; during the ball receiving operation, the cleaning ball pushes the dirt into the device body, and by opening the sewage valve, the dirt in the device body is discharged; during the ball sending operation, after placing the cleaning ball, a blind plate is installed for sealing. Before opening the first control valve, the vent valve and the fourth control valve need to be opened. Fluid is injected through the fourth control valve, and the air inside the device body is discharged through the vent valve, so that the device body is filled with fluid to prevent air from entering the downstream pipeline; preferably, the sewage valve is located at the bottom of the four-way structure, and the vent valve is located at the top of the four-way structure.

[0014] As a preferred embodiment of the present invention, a pressure gauge, a thermometer and a safety valve are provided on the device body. The safety valve is provided to prevent the pressure in the device body from overloading, and the pressure gauge and the thermometer are provided to monitor the internal conditions of the device body to ensure the safety of the operating personnel.

[0015] A ball receiving and sending system includes a flow pipeline and the above-mentioned ball receiving and sending device. Along the flow direction of the fluid in the flow pipeline, a first branch, a first valve, a second branch, a third branch, a second valve and a fourth branch are sequentially arranged on the flow pipeline; the first branch communicates with the second control valve, the second branch communicates with the fourth control valve, the third branch communicates with the third control valve, and the fourth branch communicates with the first control valve; the first valve and the second valve are used to control the flow direction of the fluid in the flow pipeline.

[0016] In the ball receiving and sending system of the present invention, by adopting the ball receiving and sending device of the present invention, the ball receiving device and the ball sending device are combined, and the second control valve, the fourth control valve, the third control valve and the first control valve on the device body are respectively communicated through the first branch, the second branch, the third branch and the fourth branch. By the coordinated use of the first valve, the second valve, the second control valve, the fourth control valve, the third control valve and the first control valve arranged on the flow pipeline to control the flow direction of the fluid, the device body has both the ball receiving function and the ball sending function, reducing the deployment area of the ball receiving and sending system, streamlining the laid pipelines, and saving the device layout cost; in terms of use, the ball receiving and sending system optimizes the ball receiving and sending process, is more convenient for maintenance and repair, and saves the maintenance cost.

[0017] A control method for a pigging system, using the above-mentioned pigging system, one end of the circulation pipeline is connected to the upstream pipeline of the distribution station, and the other end is connected to the downstream pipeline of the distribution station. The control method includes: Fluid transportation state: Close the third control valve, the fourth control valve, the second control valve, and the first control valve, and open the first valve and the second valve to allow the fluid to pass through the upstream pipeline, the circulation pipeline, and the downstream pipeline; Pig receiving state: Open the second control valve and the third control valve, close the first control valve and the fourth control valve, open the second valve, and close the first valve to allow the fluid to pass through the upstream pipeline, the circulation pipeline, the first branch, the second control valve, the device body, the third control valve, the third branch, the circulation pipeline, and the downstream pipeline. When the fluid carries a cleaning pig into the device body, the cleaning pig is intercepted by the pig storage section; Pig sending state: Open the first control valve and the fourth control valve, close the second control valve and the third control valve, open the first valve, and close the second valve to allow the fluid to pass through the upstream pipeline, the circulation pipeline, the first valve, the second branch, the fourth control valve, the device body, the first control valve, the circulation pipeline, and the downstream pipeline. Place the cleaning pig in the pig placement section. When the fluid passes through the device body, the fluid pushes the cleaning pig into the downstream pipeline.

[0018] A pigging method of the present invention uses the above-mentioned pigging system. When the distribution station is in the fluid transportation state, the fluid directly passes through the circulation pipeline and enters the downstream pipeline; when pigging the upstream pipeline is required, the upstream fluid passes through the device body, and the cleaning pig in the upstream pipeline is intercepted by the device body, and both the dirt and the cleaning pig are retained inside the device body; when pigging the downstream pipeline is required, a cleaning pig is arranged in the device body, and the fluid passes through the device body and enters the downstream pipeline. The cleaning pig arranged in the device body is pushed into the downstream pipeline by the fluid; the fluid transportation function, the pig sending function, and the pig receiving function are realized through the pigging system, saving the layout cost. By combining the opening and closing of multiple valves, the device body can realize different functions, optimizing the operation process.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. A ball-receiving and sending device of the present invention is respectively connected with a ball-receiving cylinder, a ball-storing cylinder, a ball-sending cylinder and a ball-setting cylinder in a four-way structure. The axes of the ball-receiving cylinder and the ball-storing cylinder are connected, and the axes of the ball-sending cylinder and the ball-setting cylinder are connected, so that the cleaning balls collected by the ball-receiving cylinder can be intercepted in the ball-storing cylinder, and the cleaning balls put in from the ball-setting cylinder can be pushed into the ball-sending cylinder in a straight line, and both the ball-receiving operation and the ball-sending operation can be completed in the device body; blind plates are provided at the ends of the ball-storing cylinder and the ends of the ball-setting cylinder, and the blind plates seal the device body to ensure the safe operation of the ball-receiving and sending device and avoid leakage of flammable and explosive substances; a first control valve is provided at the end of the ball-sending cylinder, a second control valve is provided at the end of the ball-receiving cylinder, a third control valve for communicating with the internal space of the ball-storing cylinder is provided at the ball-storing cylinder, and a fourth control valve for communicating with the internal space of the ball-setting cylinder is provided at the ball-setting cylinder; When collecting balls, the second control valve and the third control valve are opened, and the first control valve and the fourth control valve are closed, so that the fluid flows through the ball collecting cylinder and the ball storage cylinder, thereby intercepting the cleaning balls in the upstream pipeline in the ball storage cylinder; when serving balls, the first control valve and the fourth control valve are opened, and the second control valve and the third control valve are closed, so that the fluid flows through the ball placing cylinder and the ball serving cylinder, thereby pushing the cleaning balls placed in the serving section into the downstream pipeline; wherein, the first control valve is used to connect with the downstream pipeline to discharge the cleaning balls in the ball serving cylinder, the second control valve is used to connect with the upstream pipeline to collect the balls from the upstream, the third control valve is used to discharge the fluid in the device body, and the fourth control valve is used to inject the fluid into the device body; the ball collecting operation and the ball serving operation can be completed by using the ball receiving and serving device, and the ball receiving and serving device occupies less space and is more convenient to operate.

[0020] 2. The ball serving and receiving device of the present invention is easy to manufacture and deploy, which reduces the deployment area of ​​the ball serving and receiving device, saves land costs, reduces the number of auxiliary detection equipment, and saves equipment installation and maintenance costs; the device body switches the ball serving and receiving states through valve coordination, which is simple to control, optimizes the operation process, and has good economic value and practical value.

[0021] 3. A ball serving and receiving system of the present invention adopts a ball serving and receiving device of the present invention to merge a ball receiving device and a ball serving device, and respectively connect the second control valve, the fourth control valve, the third control valve and the first control valve on the device body through the first branch, the second branch, the third branch and the fourth branch, and cooperate with the first control valve arranged on the circulation pipeline to control the flow direction of the fluid, so that the device body has both ball receiving and serving functions, reduces the deployment area of ​​the ball serving and receiving system, simplifies the laid pipelines, and saves the device laying cost; in use, the ball serving and receiving system optimizes the ball serving and receiving process, is more convenient for maintenance and overhaul, and saves maintenance cost.

[0022] 4. A ball receiving and sending method of the present invention uses the above-mentioned ball receiving and sending system. When the transmission and distribution station is in the fluid transportation state, the fluid directly passes through the circulation pipeline and enters the downstream pipeline; when it is necessary to receive balls from the upstream pipeline, the upstream fluid passes through the device body, and the cleaning balls in the upstream pipeline are intercepted by the device body, and the dirt and cleaning balls are both retained inside the device body; when it is necessary to send balls to the downstream pipeline, cleaning balls are arranged inside the device body, so that the fluid passes through the device body and enters the downstream pipeline, and the cleaning balls arranged inside the device body are pushed into the downstream pipeline by the fluid; the fluid transportation function, the ball sending function and the ball receiving function are realized through the ball receiving and sending system, saving the layout cost, and the device body can realize different functions by combining the opening and closing of multiple valves, optimizing the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a ball receiving and sending device; Figure 2 is a schematic structural diagram of the device body in Embodiment 1; Figure 3 is a schematic cross-sectional structural diagram of the four-way structure in Embodiment 1; Figure 4 is a schematic structural diagram of the four-way structure in Embodiment 1; Figure 5 is a schematic structural diagram of the blind plate in Embodiment 1; Figure 6 is a schematic structural diagram of the four-way structure in Embodiment 2; Figure 7 is a schematic diagram of the usage state of the four-way structure in Embodiment 2; Figure 8 is a schematic structural diagram of the device body in Embodiment 3; Figure 9 is a schematic structural diagram of the device body in Embodiment 4; Figure 10 is a schematic structural diagram of a ball receiving and sending system in Embodiment 5.

[0024] ICON: 1000 - device body, 1 - ball receiving cylinder, 2 - ball storage cylinder, 3 - ball sending cylinder, 4 - ball placing cylinder, 5 - four-way structure, 6 - blind plate, 7 - first control valve, 8 - second control valve, 9 - third control valve, 10 - fourth control valve, 11 - vent valve, 12 - sewage valve, 13 - circulation pipeline, 51 - chamfer, 52 - circular channel, 53 - joint, 54 - through hole, 55 - rod-shaped structural member, 61 - spring member, 101 - first cylinder, 102 - transition section, 103 - second cylinder, 131 - first branch, 132 - second branch, 133 - third branch, 134 - fourth branch, 135 - first valve, 136 - second valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be described in detail below with reference to the accompanying drawings.

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Embodiment 1 As Figure 1 shown, a receiving and sending device includes a device body 1000. The device body 1000 includes a receiving barrel 1, a storage barrel 2, a sending barrel 3, a ball placement barrel 4, and a cross-through four-way structure 5. The receiving barrel 1, the storage barrel 2, the sending barrel 3, and the ball placement barrel 4 are respectively adapted to communicate with the four-way structure 5. The axes of the receiving barrel 1 and the storage barrel 2 are in through connection, and the axes of the sending barrel 3 and the ball placement barrel 4 are in through connection; blind plates 6 are provided at the ends of the storage barrel 2 and the ball placement barrel 4, a first control valve 7 is provided at the end of the sending barrel 3, and a second control valve 8 is provided at the end of the receiving barrel 1; a third control valve 9 for communicating with the internal space of the storage barrel 2 is provided on the storage barrel 2, and a fourth control valve 10 for communicating with the internal space of the ball placement barrel 4 is provided on the ball placement barrel 4.

[0028] As Figures 2 - 5 shown, specifically, the receiving barrel 1, the storage barrel 2, the sending barrel 3, the ball placement barrel 4, and the four-way structure 5 are all pressure-bearing structural members, and the receiving barrel 1, the storage barrel 2, the sending barrel 3, and the ball placement barrel 4 are respectively welded and communicated with the four-way structure 5.

[0029] Specifically, two circular channels 52 that cross through each other are provided inside the four-way structure 5. The two circular channels 52 are of the same size and cross through each other in a "cross" shape to form four channels. The four channels are respectively connected to the receiving barrel 1, the sending barrel 3, the storage barrel 2, and the ball placement barrel 4, and the inner diameters of the storage barrel 2 and the ball placement barrel are the same as the diameter of the circular channel 52.

[0030] Specifically, the diameter of the circular channel 52 is larger than the diameter of the cleaning ball. A third control valve 9 is provided on the side wall of the storage barrel 2, and a fourth control valve 10 is provided on the side wall of the ball placement barrel 4. When the cleaning ball enters the storage barrel 2 or the ball placement barrel 4, a gap is left between the cleaning ball and the inner wall of the storage barrel 2 or the ball placement barrel 4. The cleaning ball is intercepted by the storage barrel 2 or the ball placement barrel 4, and the fluid can flow through the third control valve 9 or the fourth control valve 10 provided at the top, avoiding accumulation inside the device body 1000 and causing an explosion risk.

[0031] Specifically, both the ball receiver 1 and the ball sender 3 are cylindrical structural members. The cylindrical structural member is composed of a first cylinder 101, a transition section 102, and a second cylinder 103. The first cylinder 101, the transition section 102, and the second cylinder 103 are connected in sequence, so that the diameter of one end of the transition section 102 is adapted to the diameter of the first cylinder 101, and the diameter of the other end is adapted to the diameter of the second cylinder 103. From the first cylinder 101 to the second cylinder 103, the transition section 102 is a conical cylinder with a gradually decreasing diameter; the diameter of the first cylinder 101 is adapted to the diameter of the circular channel 52, and the diameter of the second cylinder 103 is adapted to the diameter of the cleaning ball, so that the cleaning ball can abut against the inner wall of the first cylinder. The diameter of the second cylinder 103 is the same as the diameter of the upstream pipeline or the downstream pipeline, so that the cleaning ball can be easily pushed into the downstream pipeline under the action of the fluid; the transition section 102 is welded to the first cylinder 101, and the transition section 102 is welded to the second cylinder 103.

[0032] Specifically, chamfers 51 are provided at the four corners at the intersection position on the inner wall of the four-way structure 5, which can prevent the cleaning ball from being stuck and prevent the cleaning ball from being cut by hitting the corners.

[0033] Specifically, a thermometer is provided on the outer wall of the four-way structure 5 to measure the temperature of the internal space of the four-way structure 5, a pressure gauge is provided on the outer wall of the ball storage cylinder 2 to measure the pressure inside the ball storage cylinder 2, and a safety valve is provided on the outer wall of the ball placement cylinder 4 to communicate with the internal space of the ball placement cylinder 4; since the inner wall spaces of the ball receiver 1, the ball storage cylinder 2, the ball sender 3, the ball placement cylinder 4, and the four-way structure 5 are interconnected, the pressure gauge, the thermometer, and the safety valve can be set at any position of the device body 1000.

[0034] Specifically, the blind plate 6 is hinged to the end of the ball storage cylinder 2 or the ball placement cylinder 4, so that the blind plate 6 can be quickly opened or closed. A spring member 61 is provided on the blind plate 6 facing the middle of the four-way structure 5 as a buffer device, and the buffer device is used to abut against the cleaning ball to prevent the cleaning ball from hitting the blind plate 6.

[0035] Specifically, the diameter of the circular channel 52 is 100 cm, and the diameter of the second cylinder 103 is 90 cm.

[0036] Preferably, the ball receiver 1, the ball storage cylinder 2, the ball sender 3, the ball placement cylinder 4, and the four-way structure 5 are integrally formed structural members.

[0037] A ball receiving and sending device according to this embodiment can enable the device body 1000 to have the ball sending function by opening the first control valve 7 and the fourth control valve 10, forming a passage through the fourth control valve 10, the ball placing cylinder 4, the four-way structure 5, the ball sending cylinder 3 and the first control valve 7. The fluid enters from the fourth control valve 10 and discharges from the first control valve 7, thereby pushing the cleaning ball into the downstream pipeline; by opening the first control valve 7 and the fourth control valve 10, the device body 1000 can have the ball receiving function, forming a passage through the second control valve 8, the ball receiving cylinder 1, the four-way structure 5, the ball storage cylinder 2 and the third control valve 9. The fluid in the upstream pipeline carries the cleaning ball and enters the device body 1000 from the second control valve 8, and the fluid discharges from the third control valve 9, while the cleaning ball is intercepted by the ball storage cylinder 2; the dirt pushed into the device body 1000 by the cleaning ball is discharged from the drain valve 12; when sending the cleaning ball downstream, the air in the device body 1000 is evacuated through the vent valve 11 to avoid air entering the downstream pipeline.

[0038] A ball receiving and sending device of the present invention is respectively connected to the ball receiving cylinder 1, the ball storage cylinder 2, the ball sending cylinder 3 and the ball placing cylinder 4 on the four-way structure 5. The axes of the ball receiving cylinder 1 and the ball storage cylinder 2 are in line, and the axes of the ball sending cylinder 3 and the ball placing cylinder 4 are in line, so that the cleaning balls received by the ball receiving cylinder 1 can be intercepted in the ball storage cylinder 2, and the cleaning balls placed in the ball placing cylinder 4 can be directly pushed into the ball sending cylinder 3. Both the ball receiving operation and the ball sending operation can be completed within the device body 1000; blind plates 6 are provided at the ends of the ball storage cylinder 2 and the ball placing cylinder 4, and the blind plates 6 seal the device body 1000 to ensure the safe operation of the ball receiving and sending device and prevent the leakage of flammable and explosive substances; a first control valve 7 is provided at the end of the ball sending cylinder 3, a second control valve 8 is provided at the end of the ball receiving cylinder 1, a third control valve 9 for communicating with the internal space of the ball storage cylinder 2 is provided in the ball storage cylinder 2, and a fourth control valve 10 for communicating with the internal space of the ball placing cylinder 4 is provided in the ball placing cylinder 4; when receiving the ball, by opening the second control valve 8 and the third control valve 9 and closing the first control valve 7 and the fourth control valve 10, the fluid flows through the ball receiving cylinder 1 and the ball storage cylinder 2, thereby intercepting the cleaning balls in the upstream pipeline in the ball storage cylinder 2; when sending the ball, by opening the first control valve 7 and the fourth control valve 10 and closing the second control valve 8 and the third control valve 9, the fluid passes through the ball placing cylinder 4 and the ball sending cylinder 3, thereby pushing the cleaning balls placed in the ball sending section into the downstream pipeline; among them, the first control valve 7 is used to connect the downstream pipeline to discharge the cleaning balls in the ball sending cylinder 3, the second control valve 8 is used to connect the upstream pipeline to receive the balls from the upstream, the third control valve 9 is used to discharge the fluid in the device body 1000, and the fourth control valve 10 is used to inject fluid into the device body 1000; by using the ball receiving and sending device, the ball receiving operation and the ball sending operation can be completed. The ball receiving and sending device occupies less space and is more convenient to operate.

[0039] Embodiment 2 As Figures 6 - 7A ball receiving and sending device, whose structure is substantially the same as that of Embodiment 1. Different from Embodiment 1, at least one through hole 54 is provided on the side wall of each joint 53. The through hole 54 penetrates the circular channel 52, and a rod-shaped structural member 55 can be adaptively arranged in the through hole 54. The rod-shaped structural member 55 is used to limit the movement path of the cleaning ball.

[0040] Specifically, the four-way structure 5 has four joints 53, and the four joints 53 are respectively connected to the ball receiving cylinder 1, the ball storage cylinder 2, the ball sending cylinder 3 and the ball placing cylinder 4. The through holes 54 on the side walls of each joint 53 are arranged radially along the circular channel 52; when not in use, bolts can be arranged in the through holes 54 for sealing; when ball receiving operation is required, the bolts on the ball sending cylinder 3 side and the ball placing cylinder 4 side of the four-way structure 5 are removed and replaced with rod-shaped structural members 55. The rod-shaped structural members 55 block the path for the cleaning ball to enter the ball sending cylinder 3 and the ball placing cylinder 4, so that the cleaning ball can only enter from the ball receiving cylinder 1 into the ball storage cylinder 2, preventing the cleaning ball from entering the ball receiving cylinder 1 and the ball storage cylinder 2; when ball sending operation is required, the bolts on the ball receiving cylinder 1 side and the ball storage cylinder 2 side of the four-way structure 5 are removed and replaced with rod-shaped structural members 55. The rod-shaped structural members 55 block the path for the cleaning ball to enter the ball receiving cylinder 1 and the ball storage cylinder 2, so that the cleaning ball can only move within the ball placing cylinder 4 and the ball sending cylinder 3, preventing the cleaning ball from entering the ball storage cylinder 2 and the ball receiving cylinder 1; the rod-shaped structural members 55 are threadedly connected to the through holes 54 for sealing.

[0041] Embodiment 3 As Figure 8 shown, a ball receiving and sending device, whose structure is substantially the same as that of Embodiment 1. Different from Embodiment 1, the cross-connected four-way structure 5 is an X-shaped structural member.

[0042] Specifically, the included angle between adjacent channels of the four-way structure 5 is 30 degrees or 150 degrees.

[0043] Preferably, the included angle between adjacent channels of the four-way structure 5 can be any angle.

[0044] In the ball receiving and sending device of this embodiment, the four-way structure 5 is an X-shaped structural member, and the ball receiving cylinder 1, the ball storage cylinder 2, the ball sending cylinder 3, and the ball placing cylinder 4 are arranged along the extension of the X-shaped structural member, so that the device body 1000 can adapt to a narrower installation space and occupy a smaller layout area.

[0045] Embodiment 4 As Figure 9 shown, a ball receiving and sending device, whose structure is substantially the same as that of Embodiment 1. Different from Embodiment 1, the ball sending cylinder 3 and / or the ball receiving cylinder 1 is a conical cylinder.

[0046] Specifically, the conical cylinder is provided with a large opening and a small opening. The inner diameter of the large opening is the same as the diameter of the circular channel 52, and the inner diameter of the small opening is adapted to the diameter of the cleaning ball.

[0047] Specifically, the large opening is welded to the four-way structure 5, and the small opening is connected to the first control valve 7 or the second control valve 8.

[0048] In a receiving and sending device of this embodiment, by constructing the sending cylinder 3 and / or the receiving cylinder 1 as a conical cylinder, when receiving the ball, the cleaning ball can quickly enter the ball storage cylinder 2. When sending the ball, when the fluid flows out along the conical cylinder, since the flow area gradually decreases, the flow velocity of the fluid gradually increases, making it easier for the cleaning ball to enter the downstream pipeline.

[0049] Embodiment 5 As Figure 10 A receiving and sending system as shown includes a circulation pipeline 13 and a receiving and sending device of Embodiment 1 / Embodiment 2 / Embodiment 3 / Embodiment 4. Along the flow direction of the fluid in the circulation pipeline 13, a first branch 131, a first valve 135, a second branch 132, a third branch 133, a second valve 136, and a fourth branch 134 are sequentially arranged on the circulation pipeline 13; the first branch 131 is communicated with the second control valve 8, the second branch 132 is communicated with the fourth control valve 10, the third branch 133 is communicated with the third control valve 9, and the fourth branch 134 is communicated with the first control valve 7; the first valve 135 and the second valve 136 are used to control the flow direction of the fluid in the circulation pipeline 13.

[0050] A receiving and sending system of the present invention, by adopting a receiving and sending device of the present invention, combines the receiving device and the sending device, and through the first branch 131, the second branch 132, the third branch 133, and the fourth branch 134, the second control valve 8, the fourth control valve 10, the third control valve 9, and the first control valve 7 on the device body 1000 are respectively communicated. By the cooperation of the first valve 135, the second valve 136, the second control valve 8, the fourth control valve 10, the third control valve 9, and the first control valve 7 arranged on the circulation pipeline 13 to control the flow direction of the fluid, the device body 1000 has both the function of receiving the ball and the function of sending the ball, reducing the deployment area of the receiving and sending system, streamlining the laid pipelines, and saving the device layout cost; in use, the receiving and sending system optimizes the receiving and sending process, is more convenient for maintenance and repair, and saves the maintenance cost.

[0051] Embodiment 6 A control method for a receiving and sending system, adopting a receiving and sending system of Embodiment 5, one end of the circulation pipeline 13 is communicated with the upstream pipeline of the distribution station, and the other end is communicated with the downstream pipeline of the distribution station. The control method includes: Fluid transportation state: Close the third control valve 9, the fourth control valve 10, the second control valve 8 and the first control valve 7, and open the first valve 135 and the second valve 136 to allow the fluid to pass through the upstream pipeline, the circulation pipeline 13 and the downstream pipeline; Ball receiving state: Open the second control valve 8 and the third control valve 9, close the first control valve 7 and the fourth control valve 10, open the second valve 136, and close the first valve 135 to allow the fluid to pass through the upstream pipeline, the circulation pipeline 13, the first branch 131, the second control valve 8, the device body 1000, the third control valve 9, the third branch 133, the circulation pipeline 13 and the downstream pipeline. When the fluid carries the cleaning ball into the device body 1000, the cleaning ball is intercepted by the ball storage section; Ball sending state: Open the first control valve 7 and the fourth control valve 10, close the second control valve 8 and the third control valve 9, open the first valve 135, and close the second valve 136 to allow the fluid to pass through the upstream pipeline, the circulation pipeline 13, the first valve 135, the second branch 132, the fourth control valve 10, the device body 1000, the first control valve 7, the circulation pipeline 13 and the downstream pipeline. The cleaning ball is placed in the ball placement section. When the fluid passes through the device body 1000, the fluid pushes the cleaning ball into the downstream pipeline.

[0052] A ball receiving and sending method of the present invention. When the distribution station is in the fluid transportation state, the fluid directly passes through the circulation pipeline 13 and enters the downstream pipeline; when it is necessary to receive balls from the upstream pipeline, the upstream fluid passes through the device body 1000, and the cleaning balls in the upstream pipeline are intercepted by the device body 1000, and both the dirt and the cleaning balls are retained inside the device body 1000; when it is necessary to send balls to the downstream pipeline, cleaning balls are arranged in the device body 1000, and the fluid passes through the device body 1000 and enters the downstream pipeline. The cleaning balls arranged in the device body 1000 are pushed into the downstream pipeline by the fluid; the fluid transportation function, the ball sending function and the ball receiving function are realized through the ball receiving and sending system, which saves the layout cost. By combining the opening and closing of multiple valves, the device body 1000 can realize different functions, and the operation process is optimized.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A receiving and sending device, characterized in that, it includes a device body (1000), and the device body (1000) includes a ball receiving cylinder (1), a ball storage cylinder (2), a ball sending cylinder (3), a ball placing cylinder (4) and a four-way structure (5) with cross-through, the ball receiving cylinder (1), the ball storage cylinder (2), the ball sending cylinder (3) and the ball placing cylinder (4) are respectively adapted and communicated with the four-way structure (5), the axes of the ball receiving cylinder (1) and the ball storage cylinder (2) are through, and the axes of the ball sending cylinder (3) and the ball placing cylinder (4) are through; blind plates (6) are covered at the ends of the ball storage cylinder (2) and the ball placing cylinder (4), a first control valve (7) is arranged at the end of the ball sending cylinder (3), and a second control valve (8) is arranged at the end of the ball receiving cylinder (1); a third control valve (9) for communicating with the internal space of the ball storage cylinder (2) is arranged on the ball storage cylinder (2), and a fourth control valve (10) for communicating with the internal space of the ball placing cylinder (4) is arranged on the ball placing cylinder (4).

2. The receiving and sending device according to claim 1, characterized in that, two circular channels (52) with cross-through are arranged inside the four-way structure (5).

3. The receiving and sending device according to claim 2, characterized in that, the four-way structure (5) includes four joints (53), at least one through hole (54) is arranged on the side wall of each joint (53), the through hole (54) penetrates the circular channel (52), and a rod-shaped structural member (55) can be adaptively arranged in the through hole (54), and the rod-shaped structural member (55) is used to limit the movement path of the cleaning ball.

4. The receiving and sending device according to claim 2, characterized in that, the diameters of the circular channel (52), the inner diameter of the ball storage cylinder (2) and the inner diameter of the ball placing cylinder (4) are all larger than the diameter of the cleaning ball, the third control valve (9) is arranged on the side wall of the ball storage cylinder (2), and the fourth control valve (10) is arranged on the side wall of the ball placing cylinder (4).

5. The receiving and sending device according to claim 4, characterized in that, both the ball receiving cylinder (1) and the ball sending cylinder (3) include cylindrical structural members, the cylindrical structural members include a first cylinder (101), a transition section (102) and a second cylinder (103), the two ends of the transition section (102) are respectively adaptively connected to the first cylinder (101) and the second cylinder (103), the first cylinder (101) is connected to the four-way structure (5), and the second cylinder (103) is connected to the second control valve (8) or the first control valve (7); the inner diameter of the first cylinder (101) is larger than the inner diameter of the second cylinder (103), and the inner diameter of the second cylinder (103) is adapted to the inner diameter of the cleaning ball.

6. The receiving and sending device according to claim 1, characterized in that, a chamfer (51) is arranged at the inner wall corner of the four-way structure (5).

7. The receiving and sending device according to claim 1, characterized in that, The four-way structure (5) is provided with a blowdown valve (12) and a vent valve (11), and both the blowdown valve (12) and the vent valve (11) are communicated with the internal space of the four-way structure (5).

8. A pigging device according to any one of claims 1-7, characterized in that the device body (1000) is provided with a pressure gauge, a thermometer and a safety valve.

9. A pigging system, characterized in that it includes a flow pipeline (13) and a pigging device according to any one of claims 1-8. Along the flow direction of the fluid in the flow pipeline (13), a first branch (131), a first valve (135), a second branch (132), a third branch (133), a second valve (136) and a fourth branch (134) are sequentially arranged on the flow pipeline (13); the first branch (131) is communicated with the second control valve (8), the second branch (132) is communicated with the fourth control valve (10), the third branch (133) is communicated with the third control valve (9), and the fourth branch (134) is communicated with the first control valve (7); the first valve (135) and the second valve (136) are used to control the flow direction of the fluid in the flow pipeline (13).

10. A control method for a pigging system, characterized in that a pigging system according to claim 9 is adopted. One end of the flow pipeline (13) is communicated with the upstream pipeline of the distribution station, and the other end is communicated with the downstream pipeline of the distribution station. The control method includes: Fluid transportation state: Close the third control valve (9), the fourth control valve (10), the second control valve (8) and the first control valve (7), and open the first valve (135) and the second valve (136) to make the fluid flow through the upstream pipeline, the flow pipeline (13) and the downstream pipeline; Pig receiving state: Open the second control valve (8) and the third control valve (9), close the first control valve (7) and the fourth control valve (10), open the second valve (136), and close the first valve (135) to make the fluid flow through the upstream pipeline, the flow pipeline (13), the first branch (131), the second control valve (8), the device body (1000), the third control valve (9), the third branch (133), the flow pipeline (13) and the downstream pipeline. When the fluid carries a cleaning ball into the device body (1000), the cleaning ball is intercepted by the ball storage section; Service state: Open the first control valve (7) and the fourth control valve (10), close the second control valve (8) and the third control valve (9), open the first valve (135), close the second valve (136), so that the fluid passes through the upstream pipeline, the flow pipeline (13), the first valve (135), the second branch (132), the fourth control valve (10), the device body (1000), the first control valve (7), the flow pipeline (13) and the downstream pipeline. The cleaning ball is placed in the ball placement section. When the fluid passes through the device body (1000), the fluid pushes the cleaning ball into the downstream pipeline.

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