A pressurized pipeline delivery system

Abstract

The present application relates to a kind of pressurized pipeline conveying systems, including continuous feeding equipment and conveying pipe, continuous feeding equipment includes rubbing feeding device, pressurized conveying pump and discharge pipe, the feed inlet of rubbing feeding device is equipped with stop valve, stop valve is connected the discharge port of upstream feeding device, the discharge port of rubbing feeding device is communicated the feed inlet of pressurized conveying pump, the discharge port of pressurized conveying pump is connected discharge pipe, and the discharge pipe is equipped with for dampening fluid pulsation impact generated when conveying pump works and makes liquid flow steady pulse flow stabilizer, discharge pipe is connected conveying pipe, conveying pipe is equipped with check valve and pressure sensor.Optical: it can effectively rub and scatter material and prepare into paste-shaped fluid with flow state, keep the good fluidity of material in pipeline, simultaneously, it is convenient to cut off pipeline conveying to maintain, and, it can effectively reduce the fluid pulsation impact generated in the process of pump body conveying, improve the safety of conveying belt.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid medium pipeline transportation, in particular to a pressurized pipeline transportation system. BACKGROUND

[0002] In the field of mine filling engineering, due to the wide and multiple points of goaf to be filled, the transportation system needs to pump pipeline filling to multiple goafs at different points for filling according to the needs of mining and filling by a filling station integrating tailings dewatering, filling slurry preparation and filling slurry pressurized transportation.

[0003] Due to the wide and multiple points of goaf in general mining area, pressurized transportation pumps with sufficient pumping pressure are needed to implement long-distance high-pressure transportation of filling slurry. Such pumps that can realize long-distance high-pressure transportation are mostly volumetric piston pumps or plunger pumps.

[0004] Due to the unique feature of volumetric piston pumps or plunger pumps that material is sucked and pumped according to the change of pump cavity volume, the change of volume will inevitably lead to the change of material flow, which will cause the generation of pulsation impact phenomenon. The existence of such pulsation impact will cause the intensification of the wear of the inner wall of the transportation pipeline, and will also cause the pipeline to produce severe vibration, which will lead to the rapid failure of the connection and sealing of the pipeline. The pulse flow stabilizer described above is a kind of device that reduces the flow pulse generated by volumetric pumps, makes the liquid flow smooth and reduces the pipeline vibration caused thereby.

[0005] In addition, in the field of mine filling engineering, the pumping of filling slurry by the pump station may have various pipeline laying modes such as upward transportation, upward first and then downward, multi-stage upward and downward, and downward, etc. according to the topography. The check valve is a device for preventing material backflow at the moment when the transportation pump changes direction and does not pump when transporting material upward.

[0006] In addition, during the transportation operation, the operating conditions of long-distance pipelines may appear faults such as pipe explosion, leakage and pipe blockage, therefore, it is necessary to effectively monitor the fluid information in the pipeline including pressure, etc. to reduce safety accidents. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a medical self-service terminal that effectively overcomes the defects of the prior art.

[0008] The technical solution of the present application to solve the above technical problem is as follows:

[0009] A pressurized pipeline conveying system comprises a continuous feeding device and a conveying pipe, the continuous feeding device comprises a rubbing feeding device, a pressurized conveying pump and a discharge pipe, a non-return valve is arranged on the feeding inlet of the rubbing feeding device, the non-return valve is connected with the discharge outlet of an upstream feeding device, the discharge outlet of the rubbing feeding device is communicated with the feeding inlet of the pressurized conveying pump, the discharge outlet of the pressurized conveying pump is connected with the discharge pipe, and a pulse stabilizer is arranged on the discharge pipe to stabilize the fluid pulse impact generated during the operation of the conveying pump, the discharge pipe is connected with the conveying pipe, and a check valve and a pressure sensor are arranged on the conveying pipe.

[0010] Based on the above technical solution, the application can be further improved as follows.

[0011] Further, the continuous feeding device is provided with at least three and arranged in a row, wherein three adjacent continuous feeding devices are respectively and correspondingly provided with three-way valves I at the discharge ends of the three continuous feeding devices, the three-way valves I are all provided with a converging port and two diverging ports, the discharge pipe of the middle continuous feeding device is connected with the converging port of the corresponding three-way valve I, the discharge pipes of the two continuous feeding devices on the two sides are respectively connected with the diverging ports of the corresponding three-way valves I, the remaining diverging ports of the two three-way valves I on the two sides are respectively and correspondingly connected with the two diverging ports of the three-way valve I in the middle, and the converging ports of the two three-way valves I on the two sides are respectively and correspondingly connected with one conveying pipe.

[0012] Further, the continuous feeding device is provided with two, and the discharge pipes of the two continuous feeding devices are commonly provided with a three-way valve II, the three-way valve II is provided with a converging port and two diverging ports, the two diverging ports of the three-way valve II are respectively and correspondingly connected with the discharge pipes of the two continuous feeding devices, and the converging port is connected with the conveying pipe.

[0013] Further, the continuous feeding device is provided with one and is provided with a three-way valve III, the three-way valve III is provided with a converging port and two diverging ports, the discharge pipe of the continuous feeding device is connected with the converging port of the three-way valve III through the conveying pipe, and the two diverging ports of the three-way valve III are respectively connected with branch pipes.

[0014] Further, any one of the branch pipes is provided with a three-way valve IV, the three-way valve IV is provided with a converging port and two diverging ports, the converging port of the three-way valve IV is connected with the corresponding branch pipe, and the two diverging ports are respectively connected with sub-pipes.

[0015] Further, the continuous feeding device is provided with at least two and arranged in parallel, and each discharge pipe of the continuous feeding device is connected with a corresponding conveying pipe, and the upstream and downstream of the conveying pipe of any continuous feeding device is respectively provided with two three-way valves V, the three-way valve V has a converging port and two diverging ports, and the converging port and one diverging port of the three-way valve V are connected with corresponding pipes, and the remaining diverging ports of the two three-way valves V on the conveying pipe of any continuous feeding device are respectively connected with the remaining diverging ports of the two three-way valves V on the conveying pipe of the adjacent continuous feeding device.

[0016] Further, the pressurized conveying pump is a volumetric piston pump or a plunger pump.

[0017] The present application has the advantages that the material can be effectively rubbed and dispersed to prepare a paste-like fluid with fluidization, the material in the pipeline can keep good fluidity, the pipeline conveying can be easily cut off for maintenance, the fluid pulsation impact generated in the conveying process of the pump body can be effectively reduced, and the safety of the conveying belt is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The schematic diagram of the pressurized pipeline conveying system of the present application in actual use Figure 1 ;

[0019] Figure 2 The schematic diagram of the pressurized pipeline conveying system of the present application in actual use Figure 2 ;

[0020] Figure 3 The schematic diagram of the pressurized pipeline conveying system of the present application in actual use Figure 3 ;

[0021] Figure 4 The schematic diagram of the pressurized pipeline conveying system of the present application in actual use Figure 4 ;

[0022] Figure 5 The schematic diagram of the pressurized pipeline conveying system of the present application in actual use Figure 5 ;

[0023] Figure 6 The schematic diagram of the three-way valve in the pressurized pipeline conveying system of the present application.

[0024] In the drawings, the components represented by the numbers are listed as follows:

[0025] 1. Continuous feeding equipment; 2. Conveying pipe; 4. Pulse flow stabilizer; 6. Check valve; 7. Pressure sensor; 11. Kneading and feeding device; 12. Pressurized conveying pump; 13. Check valve; 101. Three-way diverting valve I; 102. Three-way diverting valve II; 103. Three-way diverting valve III; 104. Three-way diverting valve IV; 105. Three-way diverting valve V. Detailed Implementation

[0026] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0027] Example: Figures 1 to 5 As shown, the pressurized pipeline conveying system of this embodiment includes a continuous feeding device 1 and a conveying pipe 2. The continuous feeding device 1 includes a rubbing and feeding device 11, a pressurized conveying pump 12, and a discharge pipe. The inlet of the rubbing and feeding device 11 is equipped with a check valve 13, which is connected to the outlet of the upstream feeding device. The outlet of the rubbing and feeding device 11 is connected to the inlet of the pressurized conveying pump 12. The outlet of the pressurized conveying pump 12 is connected to the discharge pipe, and the discharge pipe is equipped with a pulse flow stabilizer 4 for suppressing the fluid pulsation impact generated during the operation of the conveying pump and stabilizing the liquid flow. The discharge pipe is connected to the conveying pipe 2, and the conveying pipe 2 is equipped with a check valve 6 and a pressure sensor 7.

[0028] The functions and roles of each functional unit in this embodiment are as follows:

[0029] Check valve 13: Used to allow, control, and isolate material from the upstream feeding process system from entering the entire pressurized pipeline conveying system. In this embodiment, the check valve 13 adopts the valve body described in patent application number 2021203720565. In specific use, the stroke of the valve plate of the check valve 13 is controlled by the drive device. During normal conveying, it achieves effective conduction; during low-flow conveying, it can achieve effective flow control or throttling to control the feed rate of the upstream feeding process system; in the event of equipment failure, it can isolate the material in the upstream feeding process unit to facilitate the maintenance and repair of downstream process equipment. Other references are not elaborated here.

[0030] Rubbing and feeding device 11: for crushing, rubbing and pressure feeding of the conveyed material. In this embodiment, the "paste pump feeding device" with patent number ZL201310235626.6 is preferably used. The structural principle of the "paste pump feeding device" embodiment is described in detail in the related literature. The "paste pump feeding device" preferably used in the present application can realize the functions of dispersing, rubbing and crushing of the material, and at the same time, the pushing effect of the two opposite spiral blades built-in can increase the pressure of the material, and the material can be pressed into the inlet of the pressure conveying pump 12 at a certain pressure, thereby solving the problem of difficult material suction of the pressure conveying pump 12 and ensuring that the pressure conveying pump 12 has good volumetric efficiency

[0031] Pressure conveying pump 12: for implementing pressure conveying of the material. In this embodiment, due to the characteristics of high pressure generated by the volumetric piston pump or plunger pump, the pressure pipeline conveying system of this embodiment preferably uses a volumetric piston pump or plunger pump. Specifically, the "a follow-up valve hydraulic slurry pump" introduced in document CN202020477997.0, the "a follow-up valve and a slurry pump containing the same" introduced in document CN202020477139.6, the "an automatic spool valve and a slurry pump containing the same" introduced in document CN202020477065.6, the "a valve hydraulic slurry conveying pump" introduced in document CN202020477141.3 and the "a pipeline conveying system" introduced in document CN201920750944.9 are preferably used. The specific structure and principle of the above-mentioned documents and the above-mentioned embodiments are described in detail in the related literature, and will not be repeated here. Since the pressure conveying pump 12 involved in the above-mentioned preferred embodiments also has different structures and performance characteristics, in actual engineering, the specific characteristics of the conveyed fluid should be selected to obtain the best pumping effect.

[0032] Pulse stabilizer 4: used to smooth the fluid pulsation impact generated by the working of the delivery pump, to make the flow smooth, in particular, during the reversing process of the plunger or piston of the pressurized delivery pump 12, the change of pump cavity volume will cause the change of delivery flow, and under the action of pump pressure, the flow pulsation with large kinetic energy will cause vibration when acting on the outlet end of the pump and the subsequent pipeline, and the vibration will cause the failure of the connection of the pipeline; the reaction force formed by the pulsation impact in the pipeline will also adversely affect the service life of the valve cavity of the delivery pump, and even the unstable pulsation impact will also exacerbate the erosion of the material to the pipeline, therefore, the design of the pulse stabilizer 4 can well absorb and release the pulse kinetic energy to smooth the fluid pulsation impact generated by the delivery pump; the pulse stabilizer 4 involved in the pressurized pipeline delivery system in the embodiment preferably adopts the "paste pumping flow stabilizer" introduced in document ZL201220691196.X, the "adjustable fluid pulsation damper" introduced in document CN201720106649.0 and the "flow stabilizing device for volumetric fluid equipment" introduced in patent application No.202022040923.3. The above three technical products are all through the fluid with pulse acting on the floating piston, and absorbing and releasing the pulse kinetic energy to smooth the fluid pulsation impact generated by the delivery pump through the elastic damping body. The specific structure and principle of the above-mentioned documents and the above-mentioned embodiments are described in detail in the related documents, which will not be repeated here.

[0033] Check valve 6: used to prevent the impact damage to the system caused by the backflow of the material with high potential difference during the reversing moment of the pressurized delivery pump 12.

[0034] Pressure sensor 7: used to measure the pressure condition in the delivery pipeline in real time, to provide the basis for judging the running and fault conditions of the pipeline. In the embodiment, the pressure sensor 7 adopts the "straight-through type paste slurry pressure sensing device" introduced in document ZL201210542458.0. The diaphragm sleeve 714 of the pressure sensor 7 is consistent with the inner diameter of the pipeline 8, and will not cause resistance to the fluid; because the problem of inaccurate measurement caused by the blockage of the pressure hole or the easy wear of the metal diaphragm of the pressure transmitter 712 is avoided. Because the above-mentioned pressure sensor 7 has the function of remote transmission of pressure signal, the actually measured pressure signal can be transmitted to the central control room of the delivery system, and the alarm prompt is given to the abnormal running state such as pipe blockage, leakage and burst pipe according to the change of pressure, so as to facilitate timely disposal.

[0035] It needs to be added that: the pressure sensor 7 and the pressurized conveying pump 12 in the embodiment are respectively connected with the remote central monitoring system through power cable and signal cable and accept remote central monitoring. Specifically, the remote central monitoring system mainly consists of host computer, PLC programmable logic controller and control cabinet, and these units are common devices in industrial automation control system, which will not be described in detail. The running state information collection, control execution mechanism and driving device of each functional unit involved in the embodiment are common control technology and equipment in industry, which will not be specially described in the embodiment.

[0036] It needs to be specially added that: for the homogeneous slurry fluid with good fluidity, the necessary configuration can not be made in the pressurized pipeline conveying system of the embodiment, such as the rubbing and feeding device 11 for the homogeneous slurry fluid with good fluidity. For the installation base surface of the self-pressurized conveying pump 12 downward conveying material, the condition will not produce material backflow, and the check valve 6 can not be set to realize the backflow prevention process unit and equipment.

[0037] The system of the embodiment can be combined to form at least the following multiple forms according to different use requirements and working conditions in actual use:

[0038] 1) "two-use-one-backup" pressurized pipeline system, as shown in Figure 1 The above continuous feeding equipment 1 is provided with at least three and arranged in a row. Among the three adjacent continuous feeding equipment 1, the discharge end of the three continuous feeding equipment 1 is respectively and correspondingly provided with a three-way diverter valve I 101. The three-way diverter valve I 101 has one converging port and two diverging ports. The discharge pipe of the continuous feeding equipment 1 in the middle is connected with the converging port of the corresponding three-way diverter valve I 101. The discharge pipes of the two continuous feeding equipment 1 on both sides are respectively connected with the diverging ports of the corresponding three-way diverter valve I 101. The remaining diverging ports of the two three-way diverter valves I 101 on both sides are respectively and correspondingly connected with the two diverging ports of the three-way diverter valve I 101 in the middle. The converging ports of the two three-way diverter valves I 101 on both sides are respectively and correspondingly connected with one conveying pipe 2. In this scheme, when any one pressurized conveying pump 12 fails, the switching of the three-way diverter valve I 101 can still ensure effective conveying to two conveying pipes 2.

[0039] 2) "one-use-one-backup" pressurized pipeline system, as shown in Figure 2As shown in the figure, the continuous feeding device 1 is provided with two, and the discharge pipes of the two continuous feeding devices 1 are jointly provided with a three-way diverter valve II 102, and the three-way diverter valve II 102 has a confluence port and two branch ports, and the two branch ports of the three-way diverter valve II 102 are respectively and one-to-one connected to the discharge pipes of the two continuous feeding devices 1, and the confluence port is connected to the conveying pipe 2. In this scheme, if any one of the pressurized conveying pumps 12 fails, the normal effective conveying to the conveying pipe 2 can still be ensured through the switching of the three-way diverter valve II 102

[0040] 3) As shown in the figure, Figure 3 As shown in the figure, the continuous feeding device 1 is provided with one, and is provided with a three-way diverter valve III 103, and the three-way diverter valve III 103 has a confluence port and two branch ports, and the discharge pipe of the continuous feeding device 1 is connected to the confluence port of the three-way diverter valve III 103 through the conveying pipe 2, and the two branch ports of the three-way diverter valve III 103 are respectively connected to branch pipes. In this scheme, one pressurized conveying pump 12 can realize effective conveying to any one of the two branch pipes through the switching of the three-way diverter valve III 103.

[0041] 4) Based on scheme 3), as shown in the figure, Figure 4 As shown in the figure, a three-way diverter valve IV 104 is arranged in any one of the branch pipes, and the three-way diverter valve IV 104 has a confluence port and two branch ports, and the confluence port of the three-way diverter valve IV 104 is connected to the corresponding branch pipe, and the two branch ports are respectively connected to sub-pipes. The effective conveying of any one of two or more sub-pipes can be realized through the switching of the three-way diverter valve IV 104.

[0042] 5) "Dual-purpose mutual backup" pressurized pipeline system, as shown in the figure, Figure 5 As shown in the figure, the continuous feeding device 1 is provided with at least two, and is arranged in a row, and the discharge pipe of each continuous feeding device 1 is respectively and one-to-one connected to one conveying pipe 2, and the upstream and downstream of the conveying pipe 2 corresponding to any one of the continuous feeding devices 1 are respectively provided with two three-way diverter valves V 105, and the three-way diverter valves V 105 each have a confluence port and two branch ports, and the confluence port and one branch port of the three-way diverter valves V 105 are respectively connected to the corresponding pipes, and the remaining branch ports of the two three-way diverter valves V 105 on the conveying pipe 2 corresponding to any one of the continuous feeding devices 1 are respectively and one-to-one connected to the remaining branch ports of the two three-way diverter valves V 105 on the conveying pipe 2 corresponding to an adjacent one of the continuous feeding devices 1. Two pressurized conveying pumps 12 can simultaneously convey corresponding two conveying pipes 2; through the switching of the four three-way diverter valves V 105, any one of the pressurized conveying pumps 12 can also convey to any one of the conveying pipes 2.

[0043] In combination with the schemes 1) - 5), it needs to be supplemented that: the above schemes only give several embodiments of realizing pipeline switching through the three-way reversing valve 5, and more embodiments can be derived according to engineering needs and the main idea of the application. All embodiments derived according to the main idea of the application are within the scope of protection of the application. In particular, in the embodiment shown in Figures 1 to 5 The three-way reversing valve can be installed and used in the forward direction, or installed and used in the reverse direction (that is, the upstream and downstream of the connection of the confluence port and the shunt port with the pipeline can be exchanged, and the material can be fed from the confluence port and discharged from the shunt port, or fed from the shunt port and discharged from the confluence port).

[0044] In this embodiment, all the three-way reversing valves (three-way reversing valve I 101, three-way reversing valve II 102, three-way reversing valve III 103, three-way reversing valve IV 104, and three-way reversing valve V 105) involved can adopt the existing two-position three-way electromagnetic valve on the market and be connected to the control system in this embodiment, or adopt the following valve body structure:

[0045] As shown in Figure 6As shown, the three-way diverter valve 3 comprises a valve seat 31, a valve body 32 and a driving mechanism 33. The valve seat 31 is internally hollow, and one side of the valve seat 31 is provided with a confluence pipe hole, and the other side of the valve seat 31 is provided with two shunt pipe holes side by side. The valve body 32 is sealingly assembled in the inside of the valve seat 31, and the valve body 32 has two fluid passages 321 arranged side by side and penetrating through both sides of the valve body 32. The two fluid passages 321 are arranged in a "fork" shape, and the two fluid passages 321 are close to each other at one end close to the confluence pipe hole, and are far away from each other at the other end. The valve body 32 can translate along the two ends of the valve seat 31, and move to the two end ports of the two fluid passages 321 to be respectively penetrated through the confluence pipe hole and the two shunt pipe holes one by one. The driving mechanism 33 is assembled on the valve seat 31 and extends into the valve seat 31 to be connected with the valve body 32. The driving mechanism 33 is used to drive the valve body 32 to translate along the valve seat 31 towards the two ends of the valve seat 31. The valve seat 31 comprises a single-hole valve plate 311 and a double-hole valve plate 312 arranged side by side. The single-hole valve plate 311 constitutes the confluence pipe hole. The two holes of the double-hole valve plate 312 constitute the two shunt pipe holes respectively. The two sides of the single-hole valve plate 311 and the double-hole valve plate 312 are respectively spaced apart and supported to be connected with equidistant pipes 313 perpendicular to the two sides. The two sides of the single-hole valve plate 311 and the double-hole valve plate 312 are respectively connected by bolt connection. The two ends of the single-hole valve plate 311 and the double-hole valve plate 312 are respectively connected with structure end plates 314. The driving mechanism 33 is assembled on one of the structure end plates 314. The two sides of the valve body 32 are respectively in sealing contact with the single-hole valve plate 311 and the double-hole valve plate 312. The single-hole valve plate 311 and the double-hole valve plate 312 are respectively sealingly assembled with pipe flanges 315 on the sides away from each other at the confluence pipe hole and the shunt pipe holes. The two fluid passages 321 in the valve body 32 are arranged in a "fork" shape. The fluid passages 321 in the valve body 32 are all "~" shaped flow channels with large curvature radius. The flow channels are smooth and have no dead angle. The flow channels can effectively reduce fluid resistance, eliminate the blocking and hardening of materials in the flow channels, and effectively reduce the fluid resistance of the flow channels. The whole switching valve can be applied to a high-pressure pipeline conveying system to realize the redirection of conveying from one main pipeline to branch pipelines, and also can realize the redirection of conveying from different branch pipelines to the main pipeline.

[0046] The single-hole valve plate 311 and the double-hole valve plate 312 are respectively provided with guide grooves extending towards their two ends on the side where they are combined with the valve body 32. The valve body 32 is provided with sealing end plates 322 on both sides. The sealing end plates 322 on both sides are respectively embedded in the guide grooves of the single-hole valve plate 311 and the double-hole valve plate 312, and can move along the guide grooves towards their two ends. The sealing end plates 322 on both sides are provided with annular sealing grooves (a in the figure) around the two ends of the fluid passages 321. The sealing grooves are provided with combined sealing rings 34 to achieve sealing between the sealing end plates 322 and the single-hole valve plate 311 or the double-hole valve plate 312.

[0047] Meanwhile, the aforementioned drive mechanism 33 includes a hydraulic cylinder. The cylinder body of the hydraulic cylinder is mounted on any end of the valve seat 31. The valve body 32 has connecting ears 323 at any end or both ends. The piston rod of the hydraulic cylinder passes through the corresponding end of the valve seat 31, and the end of the piston rod extends into the connecting ear 323 and is connected to the connecting ear 323 by a pin. The oil circuit of the hydraulic cylinder is connected to the hydraulic station, and the control system is connected to the solenoid valve of the hydraulic station to realize the oil circuit control of the drive mechanism 33, that is, to realize the switching of the three-way directional valve 3.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 this invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pressurized pipeline delivery system, characterized in that: The system includes a continuous feeding device (1) and a conveying pipe (2). The continuous feeding device (1) includes a kneading and feeding device (11), a pressurized conveying pump (12), and a discharge pipe. The inlet of the kneading and feeding device (11) is equipped with a check valve (13), which is connected to the outlet of the upstream feeding device. The outlet of the kneading and feeding device (11) is connected to the inlet of the pressurized conveying pump (12). The outlet of the pressurized conveying pump (12) is connected to the discharge pipe, and the discharge pipe is equipped with a pulse flow stabilizer (4) to suppress the fluid pulsation impact generated during the operation of the conveying pump and to stabilize the liquid flow. The discharge pipe is connected to the conveying pipe (2), and the conveying pipe (2) is equipped with a check valve (6) and a pressure sensor (7). The continuous feeding device (1) is equipped with at least two There are 1, and they are arranged in a row. The discharge pipe of each of the continuous feeding devices (1) is connected to a conveying pipe (2) in a one-to-one correspondence. Two three-way diverting valves V (105) are provided at intervals on the upstream and downstream sides of the conveying pipe (2) of any continuous feeding device (1). Each three-way diverting valve V (105) has a confluence port and two diversion ports. The confluence port and one diversion port of the three-way diverting valve V (105) are connected to the corresponding pipelines. The remaining diversion ports of the two three-way diverting valves V (105) on the conveying pipe (2) of any continuous feeding device (1) are connected to the remaining diversion ports of the two three-way diverting valves V (105) on the conveying pipe (2) of the adjacent continuous feeding device (1) in a one-to-one correspondence. The three-way diverter valve includes a valve seat, a valve body, and a drive mechanism. The valve seat is hollow inside, with a confluence pipe hole on one side and two diversion pipe holes side by side on the other side. The valve body is sealed and assembled inside the valve seat, and has two fluid passages arranged side by side and running through both sides. The two fluid passages are distributed in a "fork" shape, with the ends of the two passages close to the confluence pipe hole and the other ends far apart. The fluid passages are all constructed with a "~" shaped flow channel with a large radius of curvature.

2. The pressurized pipeline transportation system according to claim 1, characterized in that: The continuous feeding device (1) is provided in at least three and arranged in a row. Among the three adjacent continuous feeding devices (1), the discharge end of each of the three continuous feeding devices (1) is respectively equipped with a three-way diversion valve I (101). Each three-way diversion valve I (101) has one confluence port and two diversion ports. The discharge pipe of the continuous feeding device (1) located in the middle is connected to the confluence port of its corresponding three-way diversion valve I (101). The discharge pipes of the two continuous feeding devices (1) located on both sides are respectively connected to the diversion ports of their respective three-way diversion valve I (101). The remaining diversion ports of the two three-way diversion valves I (101) located on both sides are respectively connected to the two diversion ports of the three-way diversion valve I (101) located in the middle. The confluence ports of the two three-way diversion valves I (101) located on both sides are respectively connected to a conveying pipe (2).

3. The pressurized pipeline transportation system according to claim 1, characterized in that: Two continuous feeding devices (1) are provided. The discharge pipes of the two continuous feeding devices (1) are jointly equipped with a three-way diversion valve II (102). The three-way diversion valve II (102) has a confluence port and two diversion ports. The two diversion ports of the three-way diversion valve II (102) are respectively connected to the discharge pipes of the two continuous feeding devices (1), and its confluence port is connected to the conveying pipe (2).

4. A pressurized pipeline transportation system according to claim 1, characterized in that: The continuous feeding device (1) is provided with a three-way diversion valve III (103). The three-way diversion valve III (103) has a confluence port and two branch ports. The discharge pipe of the continuous feeding device (1) is connected to the confluence port of the three-way diversion valve III (103) through the conveying pipe (2). The two branch ports of the three-way diversion valve III (103) are respectively connected to branch pipes.

5. A pressurized pipeline transportation system according to claim 4, characterized in that: Each of the branch pipes is equipped with a three-way diverter valve IV (104), which has one confluence port and two diversion ports. The confluence port of the three-way diverter valve IV (104) is connected to the corresponding branch pipe, and its two diversion ports are respectively connected to the sub-pipes.

6. A pressurized pipeline delivery system according to any one of claims 1 to 5, characterized in that: The pressurized delivery pump (12) is a positive displacement piston pump or plunger pump.

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