Efficient low-vibration pipeline distribution collecting pipe and control method thereof

Abstract

The invention relates to an efficient low-vibration pipeline distribution collecting pipe and a control method thereof. The efficient low-vibration pipeline distribution collecting pipe comprises a first coil pipe, a second coil pipe, an inlet pipe, a first outlet pipe, a second outlet pipe, a gradienter, a support and a valve. The first coil pipe and the second coil pipe can be in butt joint to form an annular fluid channel, and the fluid channel surrounds the outer wall of the washing tower; the inlet pipe is communicated with the first coil pipe, and a water diversion piece is arranged on the inner wall of the first coil pipe and right faces a connector of the inlet pipe and used for equally dividing fluid in the inlet pipe; the first outlet pipe and the second outlet pipe are arranged on the top of the first ring pipe in the axial direction. The gradienter is arranged on the second coil pipe, and the gradienter and the inlet pipe are symmetrically arranged relative to the axis of the fluid channel; and the two valves are respectively arranged on the first outlet pipe and the second outlet pipe. The problems that in the prior art, damping is large, vibration is likely to happen, and the flow dividing effect is affected are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of petrochemical pipelines, and in particular relates to a high-efficiency and low-vibration pipeline distribution manifold and a control method thereof. Background Art

[0002] Catalytic cracking units have always occupied a very large proportion in the field of crude oil processing. Almost every refinery will build one or several catalytic cracking units in the early stage of construction in order to deal with the residual oil left by the atmospheric and vacuum units. These units have created very considerable economic benefits for each refinery. As environmental protection is increasingly on the agenda, the pollution problem of catalytic flue gas has gradually been taken seriously by people. Catalytic flue gas desulfurization has become a unit that must be considered for catalytic units. Among them, wet flue gas desulfurization is a common method of catalytic flue gas desulfurization. Its main principle is to introduce flue gas into the scrubber, and fully react with the bottom fluid in the mixer before entering the tower, and alkaline washing desulfurization and denitrification. The mixed liquid after the reaction enters the scrubber for gas-liquid separation, and the purified flue gas is discharged into the atmosphere. The bottom fluid can be pumped back to the mixer for recycling. In order to make the reaction more complete and the layout more reasonable, the catalytic flue gas is generally fed into the scrubbing tower in two symmetrical streams, so the bottom fluid must also be fed into the mixer in two ways. Under normal operating conditions, only one bottom pump works. Therefore, the process requires special treatment of the fluid before it enters the mixer, so that the amount of fluid entering the two mixers is roughly the same, the distribution is more even, and the deviation is avoided, so that the equipment runs more smoothly.

[0003] The patent with publication number CN217784533U proposes a liquid pipeline distribution manifold, including a coil arranged around a washing tower, wherein the coil is formed by a first coil and a second coil fixedly connected; an inlet nipple is arranged at the bottom of the coil, and two outlet nipples are arranged at the top, wherein the caliber of the inlet nipple is equal to the caliber of the coil, and the caliber of the outlet nipple is smaller than the caliber of the coil, wherein one outlet nipple is located on the first coil, and the other outlet nipple is located on the second coil, and the two outlet nipples are arranged symmetrically about the inlet nipple; and a plurality of brackets are arranged circumferentially at the bottom of the coil. The above technical solution has the following problems: the inlet nipple is welded with the manifold, and the manifold and the outlet nipple are welded with angles, resulting in large damping, and the manifold is subjected to a single vertical upward force at the inlet nipple, and the manifold is prone to vibration, which affects the diversion effect of the manifold.

[0004] Therefore, it is urgent to design a new manifold and control method to solve the problem in the prior art that the damping is large and vibration easily occurs, which affects the diversion effect. Summary of the invention

[0005] In order to solve the problems of the prior art, the present invention proposes a high-efficiency and low-vibration pipeline distribution manifold and a control method thereof, which solves the problems in the prior art of large damping and easy vibration affecting the diversion effect.

[0006] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions. According to the present invention, a high-efficiency and low-vibration pipeline distribution manifold is provided, which includes a first circle tube, a second circle tube, an inlet tube, a first outlet tube, a second outlet tube, a level, a bracket and a valve; the first circle tube and the second circle tube can be connected to form an annular fluid channel, and the fluid channel surrounds the outer wall of the washing tower; the inlet tube is connected to the first circle tube and is arranged along the radial direction of the first circle tube, the inlet tube is a curved tube, and a water distribution piece is provided on the inner wall of the first circle tube and at the interface facing the inlet tube, and the water distribution piece is used to evenly divide the fluid of the inlet tube; the first outlet tube and the second outlet tube are axially arranged at the top of the first circle tube, and the second outlet tube and the first outlet tube are symmetrically arranged about the axis of the inlet tube; the level is arranged on the second circle tube, and the position of the level and the inlet tube is symmetrically arranged about the axis of the fluid channel; two valves are provided, which are respectively arranged on the first outlet tube and the second outlet tube.

[0007] Furthermore, the cross-section of the tube opening of the first circle tube is circular, and the cross-section of the tube opening of the second circle tube is semicircular or arched. The tube openings at both ends of the first circle tube are provided with sealing plates, and the sealing plates are provided with notches. The second circle tube is connected to the notches on the sealing plates, thereby forming an annular fluid channel.

[0008] Furthermore, a transition section is provided between the first outlet pipe and the first coil pipe, and between the second outlet pipe and the first coil pipe, and the arc of the inner wall of the transition section is R 内 , the arc of the outer wall of the transition section is R 外 , and R 内 <R 外 .

[0009] Furthermore, the level may be a bubble level, a digital level, a laser level, a tilt sensor or a water level.

[0010] Furthermore, a plurality of brackets are provided, which are respectively arranged directly below the inlet pipe, the first outlet pipe, the second outlet pipe and the level meter.

[0011] Furthermore, the water distribution component includes a first water distribution plate, a second water distribution plate and a base. The base is arranged close to the inner wall of the first circle tube, and the first water distribution plate and the second water distribution plate are arranged on the surface of the base. The first water distribution plate and the second water distribution plate are arranged symmetrically, and the cross-sections of the first water distribution plate and the second water distribution plate are streamlined.

[0012] Furthermore, the valve is a proportional valve, and the valve includes a first valve and a second valve, the first valve is arranged on the first outlet pipe, and the second valve is arranged on the second outlet pipe.

[0013] Furthermore, it also includes a control system that can control the valve according to the change of the level angle.

[0014] A control method for a high-efficiency and low-vibration pipeline distribution manifold comprises the following steps: S1, the level meter detects whether the second tube is horizontal, obtains the inclination ɑ of the second tube, and transmits the inclination ɑ to the control module; S2, the control module receives the inclination ɑ, if the inclination ɑ=0, execute step S3, if the inclination ɑ≠0, execute step S5; S3, respectively detecting the openings C of the first valve and the second valve, if the openings C of the first valve and the second valve are the same, executing step S8, if the openings C of the first valve and the second valve are different, executing step S4; S4, if the opening C1 of the first valve is smaller than the opening C2 of the second valve, adjust the opening C1 of the first valve; if the opening C1 of the first valve is larger than the opening C2 of the second valve, adjust the opening C2 of the second valve so that the openings C of the first valve and the second valve are the same, and execute step S8; S5, if the inclination |ɑ|≤0.5°, execute step S6, if the inclination |ɑ|>0.5°, execute step S7; S6, adjusting the openings C of the first valve and the second valve so that the flow rates through the first valve and the second valve are the same, and executing step S8; S7, notify the management personnel to inspect the device, and after the inspection is completed, execute step S1; S8, the level continuously monitors the inclination α of the second circle tube and transmits it to the control system. If the inclination α remains unchanged, the control system maintains the status of each component. If the inclination α changes, it returns to step S2.

[0015] Further, in step S6, when the inclination ɑ is greater than 0 degrees, the relationship between the inclination ɑ, the opening C1 and the opening C2 is: C1=C 01 + k × [ρ × g × R 圆 ×(1−cosα)], C2=C 02 -k×[ρ×g×R 圆 ×(1−cosα)]; in: C 01 is the opening of the first valve in the initial state; C 02 is the opening of the second valve in the initial state; k is the proportionality coefficient determined by experiment or simulation; ρ is the fluid density; g is the acceleration due to gravity; R 圆 is the radius of the plane circle where the two exits are located.

[0016] In summary, the present invention has the following advantages: 1. By changing the inlet pipe from being arranged in the vertical direction to being arranged in the radial direction of the first circle of pipes, and arranging the water distribution piece directly opposite the inlet pipe, the first circle of pipes is prevented from being subjected to impact force in the vertical direction, which helps to optimize the fluid flow path, reduce turbulence and pressure loss, and set a level meter and a proportional valve to establish a reasonable control method. By adjusting the valve opening, the uneven flow caused by vibration or installation tilt can be compensated, solving the problem of large damping and easy vibration affecting the diversion effect in the prior art; 2. By arranging a water distribution piece at the inner wall of the first circle of pipes directly opposite to the inlet pipe interface, the incoming fluid can be effectively and evenly distributed to the entire pipeline system, thereby improving the stability and efficiency of the system; 3. The level is set on the second circle of pipes and symmetrically set with the position of the inlet pipe, so that the operator can visually check and adjust the levelness of the manifold to ensure the installation accuracy and reduce the vibration problem caused by tilt.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the manifold of the present invention; Figure 2 It is a front view of the manifold of the present invention; Figure 3 This is a schematic diagram of the first coil structure of the present invention; Figure 4 This is a schematic diagram of the second coil structure of the present invention; Figure 5 For the present invention Figure 2 A cross-sectional view along the axial direction of the first outlet pipe; Figure 6 This is a schematic diagram of the inlet pipe structure of the present invention; Figure 7 It is a schematic diagram of the installation structure of the guide plate group of the present invention.

[0019] Figure numerals: 1. first circle of pipes; 2. second circle of pipes; 3. inlet pipe; 301. elbow; 302. elastic net; 303. fixing ring; 4. first outlet pipe; 5. second outlet pipe; 6. spirit level; 7. bracket; 8. water distribution part; 801. first water distribution plate; 802. second water distribution plate; 803. base; 804. connecting part; 9. washing tower; 10. sealing plate; 11. notch; 12. transition section; 13. valve; 1301. first valve; 1302. second valve; 14. flow equalizing device; 1401. central axis; 1402. blades; 15. guide plate group. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and preferred embodiments. It should be noted that all terms used in the present invention for directional and positional indications, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "lateral", "longitudinal", "center", etc., are only used to explain the relative position relationship and connection status between the components in a certain state, and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0023] like Figure 1-4As shown, a high-efficiency and low-vibration pipeline distribution manifold comprises a first coil 1, a second coil 2, an inlet pipe 3, a first outlet pipe 4, a second outlet pipe 5, a level 6, a bracket 7 and a valve 13; the first coil 1 and the second coil 2 can be butted together to form an annular fluid channel, the fluid channel surrounds the outer wall of a washing tower 9, the nominal diameter of the washing tower 9 is DN3000, and the nominal diameters of the first coil 1 and the second coil 2 are DN600; the inlet pipe 3 is connected to the first coil 1, the nominal diameter of the inlet pipe 3 is DN600, and is arranged along the radial direction of the first coil 1, and the inlet pipe 3 is a curved pipe A water distributor 8 is provided on the inner wall of the first tube circle 1 and at the interface facing the inlet pipe 3, and the water distributor 8 is used to evenly distribute the fluid in the inlet pipe 3; the first outlet pipe 4 and the second outlet pipe 5 are axially arranged at the top of the first tube circle 1, the nominal diameter of the first outlet pipe 4 and the second outlet pipe 5 is DN450, and the second outlet pipe 5 and the first outlet pipe 4 are symmetrically arranged about the axis of the inlet pipe 3; the level 6 is arranged on the second tube circle 2, and the position of the level 6 and the inlet pipe 3 is symmetrical about the axis of the fluid channel; two valves 13 are provided, which are respectively arranged on the first outlet pipe 4 and the second outlet pipe 5.

[0024] The inlet pipe 3 is arranged along the radial direction of the first circle pipe 1, while the first outlet pipe 4 and the second outlet pipe 5 are arranged at the top along the axial direction, which helps to optimize the fluid flow path and reduce turbulence and pressure loss. A water distribution piece 8 is arranged at the inner wall of the first circle pipe 1 and the interface of the inlet pipe 3, which can effectively distribute the incoming fluid evenly to the entire pipeline system, avoid local overload or unevenness, thereby improving the stability and efficiency of the system. The level meter 6 is arranged on the second circle pipe 2 and is symmetrically arranged with the position of the inlet pipe 3, which is convenient for the operator to visually check and adjust the horizontality of the manifold, ensure the installation accuracy, and thus reduce the vibration problem caused by tilt; This setting enables the fluid to be distributed more evenly throughout the entire pipeline system, reducing the impact and wear caused by local high-flow areas, extending the life of the pipeline, reducing energy loss, and improving the transportation efficiency. The symmetrically arranged level 6 and inlet and outlet pipes help maintain the mechanical balance of the entire system, further reducing the vibration amplitude during operation, and at the same time making it convenient for operators to check the status of the collecting pipe at any time, and promptly discover and correct possible installation deviations or deformation problems.

[0025] Specifically, the cross-section of the first tube circle 1 and the second tube circle 2 is circular, the radius of the first tube circle 1 and the second tube circle 2 is the same, the flow path of the fluid in the whole system is consistent, the uniform distribution of the fluid is ensured, the impact and wear caused by the local high flow area are reduced, and the stability and efficiency of the system are improved. The first tube circle 1 and the second tube circle 2 have the same radius, forming a symmetrical structural design, enhancing the mechanical balance of the whole system, helping to reduce mechanical vibration, and improving the long-term stability of the system. In other embodiments of the present invention, the cross-section of the pipe opening of the first circle tube 1 is circular, and the cross-section of the pipe opening of the second circle tube 2 can be semicircular or arched. The pipe openings at both ends of the first circle tube 1 are provided with sealing plates 10, and a notch 11 is left on the sealing plate 10. The second circle tube 2 is connected to the notch 11 of the sealing plate 10, thereby forming a continuous fluid channel outside the first circle tube 1. The fluid can enter the second circle tube 2 from the inside of the first circle tube 1 through the notch 11, ensuring the circulation of the fluid in the entire system, and can give full play to the equalizing effect of the communicating vessel, while greatly reducing the internal volume of the collecting pipe, shortening the initial reaction time of the collecting pipe in distributing the fluid, and improving the corresponding speed.

[0026] Specifically, the first outlet pipe 4 and the second outlet pipe 5 are arranged adjacent to the second circle pipe 2, which can ensure that the flow rate of the fluid flowing out of the two outlet pipes is more uniform, reduce the flow unevenness problem caused by position differences, and improve the stability and efficiency of the system. When the control system adjusts the valve opening according to the angle change of the spirit level 6, this layout can respond more quickly and achieve dynamic balance of the fluid, ensuring that the flow rate of each outlet pipe remains consistent.

[0027] Specifically, the level 6 can be a bubble level, a digital level, a laser level, a tilt sensor or a water level.

[0028] like Figure 5 As shown, there is a smooth transition between the first outlet pipe 4 and the first coil pipe 1, and between the second outlet pipe 5 and the first coil pipe 1, and the inner wall arc of the transition section 12 is R 内 The arc of the outer wall of the transition section is R 外 , R 内 <R 外 ; The smooth transition design of the transition section 12 enables the fluid to flow along a smoother path when entering the first outlet pipe 4 or the second outlet pipe 5 from the first coil pipe 1, reducing the turbulence caused by sudden changes in direction or speed, which not only reduces energy loss but also improves the overall efficiency of the system. The inner and outer wall arcs R of the transition section 12 are 内 <R 外 , so that the transition section forms a structure that is thick in the middle and thin on both sides, so that the transition section 12 can better withstand fluid impact and wear and extend its service life.

[0029] like Figure 6As shown, the inlet pipe 3 includes a curved pipe 301, an elastic net 302 and a fixing ring 303. The two fixing rings 303 are fixedly connected to the inner walls at both ends of the curved pipe 301. The elastic net 302 is cylindrical and built into the inner side of the curved pipe 301. A certain space is left between the inner side of the curved pipe 301 and the elastic net 302, which is the fluid area. The two end surfaces of the elastic net 302 are fixedly connected to the end surface of the fixing ring 303. Circular oblique holes are evenly distributed on the elastic net 302. The axis of the circular oblique holes forms an acute angle with the elastic net 302. The size of the circular oblique holes is smaller than the size of the solid particles circulating inside. Part of the fluid entering the elbow 301 enters the fluid zone through the circular oblique hole at the bend of the elbow 301 to form a layer of fluid cushion. The solid particles carried by the fluid are blocked by the circular oblique hole and hit the elastic net 302 to absorb kinetic energy. The elastic net 302 that absorbs kinetic energy can change the movement direction of the solid particles to make them impact to the other side and provide kinetic energy to the solid particles after changing direction. When they encounter the solid particles on the other side that are also rebounded, they collide with each other. The fluid entering the fluid zone will form an air cushion rushing toward the axis due to the pressure difference between the inlet of the elbow 301 and the outlet of the elbow. The fluid rushing toward the axis can carry the solid particles to flow toward the outlet of the elbow. At the same time, the inlet section of the inlet pipe 3 is connected to a bellows to reduce the influence of pipeline vibration on the collecting pipe.

[0030] Specifically, a flow balancing device 14 is provided on the central axis of the outlet section of the inlet pipe 3. The flow balancing device 14 includes a central axis 1401 and two blades 1402. The central axis 1401 of the flow balancing device 14 is fixedly connected to the water distribution member 8, and the two blades 1402 are arranged along a spiral line around the central axis 1401. The rotation angle φ satisfies: 25°≤φ≤75°, so that the fluid in the inlet pipe 3 can be divided into two fluids in the cross section of the pipeline to flow in a spiral direction. The blades 1402 are provided with a through hole. A hole is formed between the two blades 1402 and the inner wall of the inlet pipe 3, so that a gap is formed on the cross section of the inlet pipe 3, so that at least two fluids can flow through the gap, so that the two fluids are evenly distributed in the circumferential direction, the radius of the inner wall of the inlet pipe 3 is R, the cross-sectional area of ​​the inlet pipe 3 is A, and on any cross section, the sum S of the unit areas of the above gaps satisfies: S / A=3 / 4, and the shortest distance D between the gap and the axis of the central axis 1401 satisfies: D / R>1 / 2; This setting can effectively guide the fluid to flow along the spiral line, thereby achieving good mixing and uniform distribution. On any cross section, the sum of the unit areas S of the above-mentioned gaps satisfies: S / A=3 / 4, ensuring sufficient space for the fluid to flow, while retaining a certain blocking effect to guide the fluid to flow along the expected path, avoiding excessive blockage or complete lack of blockage. The shortest distance D between the gap and the axis of the central axis 1401 satisfies: D / R>1 / 2, ensuring that the gap is large enough to avoid excessive resistance to the fluid flow, while also ensuring uniform distribution of the fluid in the radial direction, preventing local high-pressure areas or low-speed areas caused by too small gaps, and improving the flow efficiency and stability of the entire system; This arrangement achieves uniform distribution of the fluid over the pipe cross section and improves the fluid mixing efficiency and the overall performance of the system.

[0031] like Figure 7 As shown, a guide vane group 15 is provided at the connection between the inlet pipe 3 and the first circle pipe 1. The two groups of guide vane groups 15 are symmetrically arranged on both sides of the water distribution member 8. The guide vane group 15 is arranged along the direction of fluid movement to achieve smooth fluid turning while reducing vibration, turbulence and energy loss at the approximately right-angle tee. The guide vane group 15 has three guide vanes, which are arranged in parallel, reducing the difficulty of installation and effectively improving the energy loss and vibration during fluid turning.

[0032] Specifically, the bracket 7 can be one of a spring vibration-damping bracket, a rigid bracket or a flexible bracket. When a spring vibration-damping bracket is used, it can effectively absorb the vibration from the pipeline system, reduce the impact on the surrounding structure, extend the life of the equipment, reduce the wear and fatigue damage caused by vibration, and improve the reliability and safety of the system; When using a rigid bracket made of metal or other high-strength materials, it is firmly installed on the supporting structure by welding, bolts, etc., which can provide strong support and extremely high stability, ensuring that the pipeline system can maintain the correct posture under any circumstances; When a flexible bracket made of flexible materials such as rubber or polyurethane and a fixed base is used, the pipeline can be allowed to bend and deform within a certain range, which can effectively absorb vibration and impact and reduce damage to the pipeline system; The bracket 7 can be respectively arranged below the inlet pipe 3, the first outlet pipe 4, the second outlet pipe 5 and the level 6, which can further reduce the vibration caused by the movement of the fluid in the inlet pipe 3, the first outlet pipe 4 and the second outlet pipe 5, and avoid affecting the distribution of the fluid. The bracket 7 below the level 6 provides a stable support to ensure that the level 6 maintains an accurate position during installation and use, and avoids measurement errors caused by vibration or displacement.

[0033] like Figure 1 , Figure 7As shown, the water distribution member 8 includes a first water distribution plate 801, a second water distribution plate 802 and a base 803, the base 803 is arranged close to the inner wall of the first circle tube 1, and the side of the base 803 away from the first circle tube 1 is connected to the first water distribution plate 801 and the second water distribution plate 802, the first water distribution plate 801 and the second water distribution plate 802 are symmetrically arranged, and the cross-sections of the first water distribution plate 801 and the second water distribution plate 802 are streamlined; The first water distribution plate 801 and the second water distribution plate 802 are symmetrically arranged to ensure that the incoming fluid can be evenly diverted to the pipes on both sides, which helps to maintain the balance of fluid flow and reduce local overload. The base 803 is close to the inner wall of the first circle tube 1, playing a certain supporting and fixing role. It also serves as a buffer zone to absorb part of the kinetic energy and further stabilize the fluid flow state. The streamlined design can effectively guide the fluid to transition smoothly, reduce turbulence and resistance, so that the fluid can pass smoothly at a lower pressure loss, improve the efficiency of fluid distribution, and reduce energy loss. This arrangement disperses the fluid entering at high speed quickly and smoothly, avoiding drastic pressure fluctuations caused by sudden changes in direction or speed, and significantly reducing vibration caused by fluid pulsation.

[0034] Specifically, the water distribution member 8 can be welded to the first tube circle 1, or the water distribution member 8 further includes a connecting member 804, and the base 803 is connected to the first tube circle 1 through the connecting member 804; Directly welding the water distribution member 8 to the inner wall of the first tube circle 1 can enhance the integrity and rigidity of the structure and reduce the risk of loosening due to mechanical vibration. If the base 803 and the first tube circle 1 are connected by a specially designed connector 804, the water distribution member 8 can be easily installed and removed, which is convenient for daily maintenance, cleaning and replacement of parts, and improves operational flexibility. The connecting member 804 may be a bolt, a screw or a floating connector. When the connecting member 804 is a bolt, the base 803 and the first tube 1 are fixed together with the bolt. Usually, holes need to be pre-drilled on the base 803 and the first tube 1, and corresponding nuts and washers are provided. When the connecting member 804 is a screw, the screw is used to pass through the first circle tube 1 and connect with the threaded hole on the base 803, which occupies less space and is easy to install.

[0035] like Figure 2As shown, the valve 13 is a proportional valve, and the valve 13 includes a first valve 1301 and a second valve 1302. The first valve 1301 is arranged on the first outlet pipe 4, and the second valve 1302 is arranged on the second outlet pipe 5. The proportional valve can adjust the opening linearly according to the input signal, such as current or voltage, so as to achieve precise control of the fluid flow, improve the flexibility and response speed of the system, and by integrating with the control system, such as PLC or DCS, the proportional valve can monitor and adjust the flow in real time to ensure that the system is always in the best operating state; The first valve 1301 and the second valve 1302 can independently control the flow of the first outlet pipe 4 and the second outlet pipe 5, respectively, to achieve dynamic balance of the load, avoid pressure fluctuations and vibration problems caused by uneven flow, and respond quickly when abnormal flow or pressure is detected to close or limit the flow.

[0036] Specifically, it also includes a control system for controlling the opening size of the valve 13 according to the angle change of the level 6 so as to achieve equal distribution of the fluid in the manifold; During operation, the level meter 6 monitors the inclination angle of the pipeline system in real time and transmits the data to the control system. The control system receives the data from the level meter 6 and calculates the openings of the first valve 1301 and the second valve 1302 that need to be adjusted. The control system accurately controls the openings of the two proportional valves through electrical signals or pneumatic signals to ensure uniform distribution of the fluid in the combined pipe. By real-time monitoring of the angle change of the level 6, the control system can dynamically adjust the opening of the valve 13 to ensure the uniform distribution of the fluid in the combined pipe and avoid uneven flow caused by tilt. The proportional valve can respond quickly to small angle changes, maintain high precision of fluid distribution, and improve the stability and reliability of the system. Modern control systems usually have communication interfaces that can be connected to SCADA systems for remote monitoring and fault diagnosis, simplifying daily maintenance work. The control system can automatically adjust the valve opening according to different working conditions, adapt to complex and changing working environments, and improve the flexibility and robustness of the system.

[0037] A control method for a high-efficiency and low-vibration pipeline distribution manifold comprises the following steps: S1: The level meter 6 detects whether the second tube 2 is horizontal, obtains the inclination ɑ of the second tube 2, and transmits the inclination ɑ to the control module; S2: The control module receives the inclination ɑ. If the inclination ɑ=0, the step S3 is executed. If the inclination ɑ≠0, the step S5 is executed. S3: Detect the openings C of the first valve 1301 and the second valve 1302 respectively. If the openings C of the first valve 1301 and the second valve 1302 are the same, execute step S8; if the openings C of the first valve 1301 and the second valve 1302 are different, execute step S4; S4: if the opening C1 of the first valve 1301 is smaller than the opening C2 of the second valve 1302, adjust the opening C1 of the first valve 1301; if the opening C1 of the first valve 1301 is larger than the opening C2 of the second valve 1302, adjust the opening C2 of the second valve 1302 so that the openings C of the first valve 1301 and the second valve 1302 are the same, and execute step S8; S5: If the inclination |ɑ|≤0.5°, execute step S6; if the inclination |ɑ|>0.5°, execute step S7; S6: adjusting the openings of the first valve 1301 and the second valve 1302 so that the flow rates passing through the first valve 1301 and the second valve 1302 are the same, and executing step S8; S7: Notify the management personnel to inspect the device, and after the inspection is completed, execute step S1; S8: The level 6 continuously monitors the inclination α of the second tube 2 and transmits it to the control system. If the inclination α remains unchanged, the control system maintains the status of each component. If the inclination α changes, it returns to step S2.

[0038] The inclination is monitored in real time by the level meter 6, and the valve opening is adjusted dynamically according to the monitoring results, so as to realize closed-loop control and improve the adaptive ability of the system. The different conditions of the inclination of the second circle pipe 2 and the opening of the valve 13 are processed step by step to ensure the stability of the system under various working conditions. For small angle changes not exceeding 0.5 degrees, the pressure difference is accurately calculated and the valve opening is adjusted to ensure uniform distribution of the fluid and achieve high-precision control. When the inclination exceeds the threshold, the management personnel are notified in time to carry out maintenance to prevent the expansion of potential problems, thereby enhancing the safety of the system. The pressure difference is calculated by a specific formula, so that the valve opening adjustment is more scientific and reasonable, and the accuracy of control is improved. After each adjustment, the system returns to step S8 for continuous detection to ensure that the system is always in the optimal state. This setting improves system stability and safety, ensures uniform distribution of fluid in each outlet pipe, avoids problems caused by uneven flow, facilitates monitoring and maintenance, and reduces the workload of daily maintenance.

[0039] Specifically, in step S6, when the inclination ɑ is greater than 0 degrees, the relationship between the inclination ɑ, the opening C1 and the opening C2 is: C1=C 01 + k × [ρ × g × R 圆 ×(1−cosα)], C2=C 02 -k×[ρ×g×R 圆 ×(1−cosα)]; Where: C 01is the opening degree of the first valve 1301 in the initial state; C 02 is the opening degree of the second valve 1302 in the initial state; k is the proportionality coefficient determined by experiment or simulation; ρ is the fluid density; g is the acceleration due to gravity; R 圆 is the radius of the plane circle where the two exits are located; Specifically, in step S6, when the inclination ɑ is less than 0 degrees, the relationship between the inclination ɑ, the opening C1 and the opening C2 is: C1=C 01 -k×[ρ×g×R 圆 ×(1−cosα)], C2=C 02 + k × [ρ × g × R 圆 ×(1−cosα)]; Where: C 01 is the opening degree of the first valve 1301 in the initial state; C 02 is the opening degree of the second valve 1302 in the initial state; k is the proportionality coefficient determined by experiment or simulation; ρ is the fluid density; g is the acceleration due to gravity; R 圆 is the radius of the plane circle where the two exits are located.

[0040] In the above relationship, since the two valves are symmetrically arranged in the same plane, when the second coil 2 is tilted forward and backward (such as Figure 1 In the up and down direction shown in the figure), the heights of the two valves are still on the same horizontal plane, which is equivalent to the case where the inclination α=0; when the second circle tube 2 is tilted left and right (such as Figure 1 In the left and right directions shown in the figure, the heights of the two valves are not on the same horizontal plane. When α is greater than 0, the left valve (first valve 1301) is higher than the right valve (second valve 1302), that is, the outlet of the first outlet pipe 4 is higher than the second outlet pipe 5. Due to the characteristic of liquid flowing to a lower place, the flow rate of the second outlet pipe 5 increases, and the flow rate of the first outlet pipe 4 needs to be increased to keep the flow rate of the two outlet pipes balanced. Since the opening of the valve is proportional to the flow rate, the opening of the first valve 1301 needs to be increased, that is, the initial opening needs to be added to the opening that needs to be increased. Therefore, when α is greater than 0, C1=C 01 + k × [ρ × g × R 圆 ×(1−cosα)], and C2=C 02 -k×[ρ×g×R 圆×(1−cosα)], when α is less than 0, the left valve is lower than the right valve, and vice versa.

[0041] The above relationship is derived from the following process: First calculate the relationship between the inclination and the height difference. The relationship between the inclination α and the height difference h is: h=R 圆 ×(1−cos(α)), where R 圆 =1500 mm is the radius of the annular duct; Then calculate the relationship between the height difference and the pressure difference. According to the principle of fluid statics, the relationship between the height difference h and the pressure difference ΔP is: ΔP = ρ × g × h, where ρ is the fluid density (assuming it is water, ρ = 1000 kg / m 3 ), g is the acceleration due to gravity (g=9.81 m / s 2 ), substitute the expression of h into the above formula, then ΔP=ρ×g×R 圆 ×(1−cos(α)); Next, the relationship between the pressure difference and the flow rate is calculated. According to the Bernoulli equation and the continuity equation, there is the following relationship between the pressure difference ΔP and the flow rate Q: Q=A×v, where A is the cross-sectional area of ​​the pipe and v is the flow rate. For incompressible fluids, assuming that the flow rate changes slightly, the linear relationship can be approximated as ΔP≈1 / 2ρ×(v2 2 −v1 2 ), simplifying to obtain ΔP≈ρ×v×Δv; Finally, calculate the relationship between valve opening and flow rate. The opening C of the proportional valve is usually expressed as a percentage. Assume that the maximum flow cross-sectional area is A. max , then the actual flow cross-sectional area A can be expressed as A=C×A max , where C is the opening percentage, 0≤C≤1, therefore, the flow rate Q can also be expressed as: Q=C×A max ×v; Combining the above formula, we can get the relationship between the inclination α and the valve opening C, and calculate the pressure difference ΔP according to the inclination α: ΔP=ρ×g×R 圆 ×(1−cos(α)), then adjust the valve opening C according to the pressure difference ΔP so that the flow rates of the two outlet pipes tend to be consistent. Assuming that the ratio to be adjusted is k, when α is greater than 0, then C1=C 01 +k×ΔP,C2=C 02 −k×ΔP, where C1 and C2 are the openings of the first valve 1301 and the second valve 1302, respectively. 01 and C 02 is the reference opening (i.e. the same opening of the two valves under ideal conditions).

[0042] When the pipeline system is tilted, the uneven flow caused by the tilt can be compensated by adjusting the opening of the valve 13. Specifically, when α is greater than 0, the valve opening C1 of the first outlet pipe 4 is increased, and the valve opening C2 of the second outlet pipe 5 is reduced, thereby ensuring that the flow rates of the two outlet pipes tend to be consistent, improving the stability and reliability of the system, and the control system can respond quickly according to the tilt angle α, adjust the valve opening in time, reduce the response time, and ensure that the system is always in the optimal state; This setting makes the valve opening adjustment more scientific and reasonable, improves the accuracy of control, can respond quickly when abnormal conditions are detected, and reduces the possibility of accidents.

[0043] When the radius R of the plane circle where the two exits are located 圆 The initial opening of the first valve 1301 and the second valve 1302 are both 50%, and the proportional coefficient k=0.001Pa −1 , k represents the response amount corresponding to each unit pressure change, which is determined by experiment or simulation. Since the unit of calculation in the bracket after k in the above formula is Pa, and the opening C has no unit, the unit needs to be eliminated, that is, k is taken as 0.001Pa -1 , so when the inclination α detected by the level 6 is 0.5°, the fluid density ρ is 1000kg / m 3 , assuming it is water, the gravitational acceleration g=9.81m / s 2 , C1 is 50.06% and C2 is 49.94%.

[0044] The above is only a preferred embodiment of the present invention. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention, still falls within the scope of the technical solution of the present invention.

Claims

1. A high-efficiency and low-vibration pipeline distribution manifold, characterized in that: It comprises a first circle tube (1), a second circle tube (2), an inlet tube (3), a first outlet tube (4), a second outlet tube (5), a level (6), a bracket (7) and a valve (13); The first coil tube (1) and the second coil tube (2) can be butted together to form an annular fluid channel, and the fluid channel surrounds the outer wall of the washing tower (9); The inlet pipe (3) is connected to the first circle pipe (1) and is arranged along the radial direction of the first circle pipe (1); the inlet pipe (3) is a curved pipe; a water distribution member (8) is arranged on the inner wall of the first circle pipe (1) and at the interface facing the inlet pipe (3); the water distribution member (8) is used to evenly distribute the fluid in the inlet pipe (3); The first outlet pipe (4) and the second outlet pipe (5) are axially arranged at the top of the first coil pipe (1), and the second outlet pipe (5) and the first outlet pipe (4) are symmetrically arranged about the axis of the inlet pipe (3); The level gauge (6) is arranged on the second coil tube (2), and the level gauge (6) and the inlet tube (3) are arranged symmetrically with respect to the axis of the fluid channel; The valves (13) are provided in two pieces, which are respectively provided on the first outlet pipe (4) and the second outlet pipe (5).

2. The high-efficiency and low-vibration pipeline distribution manifold according to claim 1, characterized in that: The cross section of the pipe opening of the first circle tube (1) is circular, and the cross section of the pipe opening of the second circle tube (2) is semicircular or arcuate. The pipe openings at both ends of the first circle tube (1) are provided with sealing plates (10), and the sealing plates (10) are provided with notches (11). The second circle tube (2) is connected to the notches (11) on the sealing plates (10) to form an annular fluid channel.

3. The high-efficiency and low-vibration pipeline distribution manifold according to claim 1, characterized in that: A transition section (12) is provided between the first outlet pipe (4) and the first coil pipe (1), and between the second outlet pipe (5) and the first coil pipe (1). The arc of the inner wall of the transition section (12) is R 内 , the arc of the outer wall of the transition section (12) is R 外 , and R 内 <R 外 .

4. The high-efficiency and low-vibration pipeline distribution manifold according to claim 1, characterized in that: The level (6) may be a bubble level, a digital level, a laser level, a tilt sensor or a water level.

5. The high-efficiency and low-vibration pipeline distribution manifold according to claim 1, characterized in that: A plurality of brackets (7) are provided, which are respectively arranged directly below the inlet pipe (3), the first outlet pipe (4), the second outlet pipe (5) and the level meter (6).

6. The high-efficiency and low-vibration pipeline distribution manifold according to claim 1, characterized in that: The water distribution member (8) comprises a first water distribution plate (801), a second water distribution plate (802) and a base (803); the base (803) is arranged in close contact with the inner wall of the first coil (1); the first water distribution plate (801) and the second water distribution plate (802) are arranged on the surface of the base (803); the first water distribution plate (801) and the second water distribution plate (802) are arranged symmetrically; and the cross-sections of the first water distribution plate (801) and the second water distribution plate (802) are streamlined.

7. The high-efficiency and low-vibration pipeline distribution manifold according to claim 1, characterized in that: The valve (13) is a proportional valve. The valve (13) comprises a first valve (1301) and a second valve (1302). The first valve (1301) is arranged on the first outlet pipe (4), and the second valve (1302) is arranged on the second outlet pipe (5).

8. The high-efficiency and low-vibration pipeline distribution manifold according to claim 1, characterized in that: It also includes a control system that can control the valve (13) according to the angle change of the level instrument (6).

9. A control method for a high-efficiency and low-vibration pipeline distribution manifold according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, a level meter (6) detects whether the second tube (2) is horizontal, obtains the inclination ɑ of the second tube (2), and transmits the inclination ɑ to a control module; S2, the control module receives the inclination ɑ, if the inclination ɑ=0, execute step S3, if the inclination ɑ≠0, execute step S5; S3, respectively detecting the openings C of the first valve (1301) and the second valve (1302); if the openings C of the first valve (1301) and the second valve (1302) are the same, executing step S8; if the openings C of the first valve (1301) and the second valve (1302) are different, executing step S4; S4, if the opening C1 of the first valve (1301) is smaller than the opening C2 of the second valve (1302), the opening C1 of the first valve (1301) is adjusted; if the opening C1 of the first valve (1301) is larger than the opening C2 of the second valve (1302), the opening C2 of the second valve (1302) is adjusted so that the openings C of the first valve (1301) and the second valve (1302) are the same, and step S8 is executed; S5, if the inclination |ɑ|≤0.5°, execute step S6, if the inclination |ɑ|>0.5°, execute step S7; S6, adjusting the openings C of the first valve (1301) and the second valve (1302) so that the flow rates passing through the first valve (1301) and the second valve (1302) are the same, and executing step S8; S7, notify the management personnel to inspect the device, and after the inspection is completed, execute step S1; S8, the level meter (6) continuously monitors the inclination α of the second circle tube (2) and transmits it to the control system. If the inclination α remains unchanged, the control system maintains the status of each component. If the inclination α changes, the control system returns to step S2.

10. A control method for a high-efficiency and low-vibration pipeline distribution manifold according to claim 9, characterized in that: In step S6, when the inclination ɑ is greater than 0 degrees, the relationship between the inclination ɑ, the opening C1 and the opening C2 is: C1=C 01 +k×[ρ×g×R 圆 ×(1−cosα)], C2=C 02 -k×[ρ×g×R 圆 ×(1−cosα)]; in: C 01 is the opening of the first valve in the initial state; C 02 is the opening of the second valve in the initial state; k is the proportionality coefficient determined by experiment or simulation; ρ is the fluid density; g is the acceleration due to gravity; R 圆 is the radius of the plane circle where the two exits are located.

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