CN111076016A - Low pressure drop fluid medium distribution device - Google Patents
Low pressure drop fluid medium distribution device Download PDFInfo
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- CN111076016A CN111076016A CN201911271095.XA CN201911271095A CN111076016A CN 111076016 A CN111076016 A CN 111076016A CN 201911271095 A CN201911271095 A CN 201911271095A CN 111076016 A CN111076016 A CN 111076016A
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- 239000012530 fluid Substances 0.000 title claims abstract description 74
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 65
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/02—Influencing flow of fluids in pipes or conduits
- F15D1/06—Influencing flow of fluids in pipes or conduits by influencing the boundary layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
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Abstract
The invention discloses a low-pressure-drop fluid medium distribution device, which solves the problem that in the prior art, when fluid medium is distributed, the purpose of low-pressure-drop distribution of fluid flow in three-in-one or two-in-one (including even distribution) can be realized no matter whether the fluid is in a fully developed state or a non-fully developed state. The distribution device comprises a distribution device main body in a pipe cavity structure, an inflow pipe communicated with the distribution device main body, at least two outflow pipes communicated with the distribution device main body, and a separation mechanism arranged in the distribution device main body and used for separating an inner cavity of the distribution device main body into a plurality of flow guide areas, wherein the number of the flow guide areas is the same as that of the outflow pipes and the flow guide areas are communicated in a one-to-one correspondence manner. The invention has the characteristics of low pressure drop, simple structure, convenient manufacture, easy installation, maintenance, replacement and the like.
Description
Technical Field
The invention relates to the field of fluid distribution devices, in particular to a low-pressure-drop fluid distribution device for distributing or equally distributing pipeline fluid in a petrochemical device.
Background
In the petrochemical industry, depending on the needs of the process design, the reboiler, air cooler or other process requiring equipment, a main fluid medium is required, distributed as several uniform branched fluid media entering the equipment nozzles, and the main fluid entering the distribution point may be a fully developed or non-fully developed medium.
In the first case, valves or other flow regulating devices are added during the process design to regulate the flow of the fluid medium to be uniformly distributed into the branch pipes. Secondly, through the pipeline design, the equalization of the fluid medium is realized: when the number of devices or device nozzles to be equally divided is even, the branch pipes are disposed at the midpoint of the header pipe, and the fluid medium is in turn equally divided in a "one-to-two" manner. When the number of the equipment or the equipment nozzles needing to be equally divided into fluid media is odd, the situation of dividing one into two can be realized by taking a distribution point at one third of a next-stage pipeline when the fluid media of the main pipe dividing one into two and dividing one into two enters the next-stage distribution in engineering; third, chinese patent No. 201620611776.1 (No. CN 205824452U) discloses a fluid medium distributor, in which a partition plate and a baffle plate are horizontally disposed at the center of the height of two side branch pipes in a four-way inner cavity, and two oblong holes are disposed on the partition plate. The size of the long round hole on the partition plate is calculated by calculating the cross sectional areas of the main pipe, the lateral branch pipe and the bottom branch pipe, and the flow of each fluid medium passing through the long round hole is adjusted by adjusting the position of the shunting baffle, so that the medium is uniformly divided into three parts.
In the first distribution method, the investment and operation and maintenance costs are correspondingly increased by adding valves or other flow regulating devices; the second distribution method, when the number of devices or device nozzles to be equally distributed is odd, is only an approximate and non-mature process in terms of engineering, and actually has a large average deviation. In addition, no matter whether the number is even or odd, the main pipe is required to be provided with a certain straight pipe section before the fluid medium is distributed, so that the fluid medium is developed into a fully developed state from a non-developed state; the third distribution method, patent 201620611776.1 (No. CN 205824452U), only achieves "one to three" fluid uniformity for the case where the number of equipment or equipment nozzles is odd, and the partition plate is perpendicular to the fluid direction and is opened, so that the fluid pressure loss is large, which is somewhat contrary to the requirement that the design of pipes or tubes should minimize the pressure drop loss. In addition, the construction is complicated, the calculation of the size of the bore of the circular hole and the manufacture of the inner part are complicated in implementation. Therefore, there is a need for a fluid medium distribution device with a simple structure and low pressure drop that can achieve odd-numbered or even-numbered distribution regardless of the fluid development state.
Disclosure of Invention
The invention provides a low-pressure-drop fluid medium distribution device, which solves the problems that in the prior art, when a fluid medium is distributed: the purpose of low-pressure-drop distribution of fluid flow in a three-in-one or two-in-one (including even distribution) mode can be achieved no matter whether the fluid is in a fully developed state or a non-fully developed state.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a low-pressure-drop fluid medium distribution device comprises a distribution device main body in a pipe cavity structure, an inflow pipe communicated with the distribution device main body, at least two outflow pipes communicated with the distribution device main body, and a separation mechanism arranged in the distribution device main body and used for separating an inner cavity of the distribution device main body into a plurality of flow guide areas, wherein the number of the flow guide areas is the same as that of the outflow pipes, and the flow guide areas are communicated in a one-to-one correspondence manner.
Specifically, when the flow rate of the fluid medium is divided into three, the distribution device main body is of a four-way or four-way-like structure, the number of the outflow pipes is three, namely, a cocurrent outflow pipe, a first lateral outflow pipe and a second lateral outflow pipe, the cocurrent outflow pipe and the inflow pipe have the same flow direction, and the first lateral outflow pipe and the second lateral outflow pipe are respectively positioned at two sides of the inflow pipe;
the partition mechanism comprises a first flow partition plate and a second flow partition plate which are distributed in a cross mode, the first flow partition plate and the second flow partition plate are located in the distribution device main body and are arranged along the flow direction of the inflow pipe, the front ends of the first flow partition plate and the second flow partition plate extend out of the inflow pipe opening, flow blocking plates respectively extend out of the bottoms of the first lateral outflow pipe and the second lateral outflow pipe towards the axial lead direction of the flow direction of the distribution device main body, the rear ends of the first flow partition plate and the second flow partition plate are respectively connected with the corresponding flow blocking plates, and the side edges of the first flow partition plate and the second flow partition plate are fixedly connected with the inner walls of the distribution device main body and the inflow pipe;
the first flow partition plate, the second flow partition plate and the flow baffle plate divide the distribution device main body into a first flow guide area and a second flow guide area which are communicated with the equidirectional outflow pipe, a third flow guide area which is communicated with the first lateral outflow pipe and a fourth flow guide area which is communicated with the second lateral outflow pipe.
Further, the first flow partition plate and the second flow partition plate respectively form a certain angle with the axial direction of the first lateral outflow pipe and the second lateral outflow pipe, the angle ranges from 0 degrees to 90 degrees, and form a certain distance with the circle center o of the inflow pipe in the axial direction of the first lateral outflow pipe and the second lateral outflow pipe, and the distance ranges from not less than 0mm to not more than the radius value of the inflow pipe; and adjusting the axial angle between the first flow partition plate or the second flow partition plate and the first lateral outflow pipe or the second lateral outflow pipe, and the distance between the axial direction of the first lateral outflow pipe or the second lateral outflow pipe and the circle center o of the inflow pipe, controlling the flow of the fluid medium entering the first flow guide area, the second flow guide area, the third flow guide area and the fourth flow guide area, and realizing the distribution purpose of the fluid medium of the inflow pipe.
Further, the fluid inlet end of the first or second lateral outflow pipe may be in a standard four-way structure, or a position where two sides of the first and second flow partitioners are connected to a four-way.
Further, the flow baffle is a horizontal baffle or an arc-shaped baffle with a semicircular cross section, and when the flow baffle is the horizontal baffle, the flow baffle extends out from the position flush with the pipe bottom of the first lateral outflow pipe or the second lateral outflow pipe and is connected with the intersection of the first flow baffle and the second flow baffle; when the baffle plate is an arc baffle plate, the baffle plate is formed by connecting a semicircular part below the axial center line of the first lateral outflow pipe or the second lateral outflow pipe with the intersection of the first flow partitioner and the second flow partitioner.
Furthermore, the connection between the flow baffle and the first flow baffle or the second flow baffle, and the connection between the flow baffle and the co-current outflow pipe may be right-angled, inscribed or circumscribed.
Specifically, when the fluid medium is in an insufficiently developed state and the flow rate is divided into two parts, the distribution device main body is of a three-way or three-way-like structure, and the number of the outflow pipes is two, namely a third lateral outflow pipe and a fourth lateral outflow pipe which are positioned on two sides of the inflow pipe respectively; the separating mechanism is a flow isolating plate arranged along the flowing direction of the inflow pipe, the front end of the flow isolating plate is fixedly connected with the inner wall of the distribution device main body from the inflow pipe opening, the two sides and the rear end of the flow isolating plate divide the distribution device main body into a fifth flow guiding area communicated with the third lateral outflow pipe and a sixth flow guiding area communicated with the fourth lateral outflow pipe.
Further, the inflow tube, the cocurrent outflow tube, the first lateral outflow tube, the second lateral outflow tube, the third lateral outflow tube, and the fourth lateral outflow tube may be used in cooperation with a flange.
Compared with the prior art, the invention has the following beneficial effects:
the flow isolating plate is parallel to the direction of the inflow pipe, so that fluid is prevented from impacting a baffle plate perpendicular to the direction of the inflow pipe, the flow isolating plate has the advantage of low pressure drop, and the flow isolating plate meets the requirement of reducing pressure drop loss in pipeline design;
the invention adopts the flow isolating plate to divide the flow guiding area in the direction parallel to the inflow pipe, and has the advantages of simple calculation and convenient flow distribution adjustment.
The invention allows the straight pipe section from the main inflow pipe to the fluid medium distribution point to be zero, thus greatly reducing the space requirement of pipeline arrangement.
The invention only adopts one or two flow isolating plates to connect with the distribution device main body, and has the advantages of simple structure and convenient manufacture.
The distribution device main body adopts a (class) three-way structure and a (class) four-way structure, and flanges can be matched and disassembled at the upstream and the downstream, so that the distribution device is convenient to install, maintain and replace.
The invention replaces a flow regulating device, and saves the device investment and the operation and maintenance cost.
Drawings
Fig. 1 is a schematic view of an a-a direction structure of a four-way distribution device of the present invention.
Fig. 2 is a view from the direction B-B of fig. 1.
Fig. 3 is a view from direction C-C of fig. 1.
Fig. 4 is a view from direction D-D of fig. 1.
FIG. 5 is a schematic view of another A-A structure of the distribution device of the present invention with a four-way structure.
Fig. 6 is a view from the direction B-B of fig. 5.
Fig. 7 is a view from direction C-C of fig. 5.
Fig. 8 is a view from direction D-D of fig. 5.
Fig. 9 is another schematic view of the structure of the direction a-a when the main body of the dispensing device of the present invention is a four-way structure.
Fig. 10 is a view from direction B-B of fig. 9.
Fig. 11 is a view from direction C-C of fig. 9.
FIG. 12 is a schematic view of an alternative structure in the direction A-A of the dispensing device of the present invention when the dispensing device body is in the four-way configuration.
Fig. 13 is a view from direction B-B of fig. 12.
FIG. 14 is a schematic view of the dispensing structure of the present invention with the upper flange in the four-way configuration.
Fig. 15 is an interior view of a flow passage of the present invention in a condition of access to a less than fully developed state during fluid dispensing.
Fig. 16 is a detail view of the dispensing device of fig. 15, in the form of a three-way structure of the dispensing device body of the invention, as seen in the direction a-a of fig. 17.
Fig. 17 is a view from direction B-B of fig. 16.
Fig. 18 is a view from direction C-C of fig. 16.
FIG. 19 is a cloud of average velocities at the inflow tube of FIG. 16.
Fig. 20 is a velocity profile at the fifth and sixth flow guide zones of fig. 16.
Wherein, the names corresponding to the reference numbers are:
1-inflow pipe, 2-cocurrent outflow pipe, 3-first lateral outflow pipe, 4-second lateral outflow pipe, 5-first flow partition plate, 6-second flow partition plate, 7-flow partition plate, 8-first flow guide area, 9-second flow guide area, 10-third flow guide area, 11-fourth flow guide area, 12-third lateral outflow pipe, 13-fourth lateral outflow pipe, 14-flow partition plate, 15-fifth flow guide area, 16-sixth flow guide area, 17-straight pipe section, 18-elbow, 19-embodiment distribution device range and 20-flange.
The letters a-q in fig. 1-20 are the technical feature mark points.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus, it should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; of course, mechanical connection and electrical connection are also possible; alternatively, they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 20, the low pressure drop fluid medium distribution device provided by the present invention includes a distribution device main body in a tube cavity structure, an inflow pipe 1 communicated with the distribution device main body, at least two outflow pipes communicated with the distribution device main body, and a partition mechanism disposed in the distribution device main body for partitioning an inner cavity of the distribution device main body into a plurality of flow guiding areas, wherein the number of the flow guiding areas is the same as the number of the outflow pipes, and the flow guiding areas are communicated with one another in a one-to-one correspondence manner.
Specifically, as shown in fig. 1 to 14, when the flow rate of the fluid medium is divided into three, the distribution device main body has a four-way or four-way-like structure, and the distribution device main body is provided with an inflow pipe 1, a same-direction outflow pipe 2 having the same flow direction as the inflow pipe 1, and a first lateral outflow pipe 3 and a second lateral outflow pipe 4 respectively located at both sides of the inflow pipe 1; a first flow partition plate 5 and a second flow partition plate 6 which are distributed in a cross way are arranged in the distribution device main body along the flow direction of the inflow pipe 1, flow baffle plates 7 respectively extend from the front ends of the first flow partition plate 5 and the second flow partition plate 6 to the axial lead direction of the distribution device main body from the inflow pipe opening, the tube bottoms of the first lateral outflow pipe 3 and the second lateral outflow pipe 4 respectively extend to the axial lead direction of the distribution device main body, the rear ends of the first flow partition plate 5 and the second flow partition plate 6 are respectively connected with the corresponding flow baffle plates 7, and the side edges of the first flow partition plate 5 and the second flow partition plate 6 are fixedly connected with the inner walls of the distribution device main body and the inflow pipe 1; the first flow divider 5, the second flow divider 6, and the flow blocking plate 7 divide the distribution device body into a first flow guide area 8 and a second flow guide area 9 communicating with the co-current outflow pipe 2, a third flow guide area 10 communicating with the first lateral outflow pipe 3, and a fourth flow guide area 11 communicating with the second lateral outflow pipe 4.
The first flow partition plate (5) and the second flow partition plate (6) respectively form a certain angle with the axial direction of the first lateral outflow pipe (3) and the second lateral outflow pipe (4), the angle range is 0-90 degrees, and a certain distance is formed between the axial direction of the first lateral outflow pipe (3) and the axial direction of the second lateral outflow pipe (4) and the circle center o of the inflow pipe, and the distance range is not less than 0mm and not more than the radius value of the inflow pipe (1). And adjusting the axial angle between the first flow partition plate (5) or the second flow partition plate (6) and the first lateral outflow pipe (3) or the second lateral outflow pipe (4), and the distance between the axial direction of the first lateral outflow pipe (3) or the second lateral outflow pipe (4) and the circle center o of the inflow pipe, controlling the flow rate of the fluid medium entering the first flow guide area (8), the second flow guide area (9), the third flow guide area (10) and the fourth flow guide area (11), and realizing the distribution purpose of the fluid medium of the inflow pipe (1).
According to the first lateral outflow pipe or the second lateral outflow pipe, the fluid inlet end of the first lateral outflow pipe or the second lateral outflow pipe can be in a standard four-way structure, or the position of the connection position of the two sides of the first flow partition plate and the second flow partition plate and the four-way is adopted.
The flow baffle 7 is a horizontal baffle or an arc baffle with a semicircular cross section, and when the flow baffle is the horizontal baffle, the flow baffle 7 extends out of the level of the bottom of the first lateral outflow pipe 3 or the second lateral outflow pipe 4 and is connected with the intersection of the first flow baffle 5 and the second flow baffle 6. When the baffle plate is an arc baffle plate, the baffle plate is formed by connecting a semicircular part below the axial central line of the first lateral outflow pipe 3 or the second lateral outflow pipe 4 with the intersection of the first flow partitioner 5 and the second flow partitioner 6.
In the invention, the connection between the flow baffle 7 and the first flow baffle 5 or the second flow baffle 6 and the connection between the flow baffle 7 and the co-current outflow pipe 2 can be right-angled, internally tangent to a circle, externally tangent to a circle, or the like.
The inflow tube 1, the same-direction outflow tube 2, the first lateral outflow tube 3, and the second lateral outflow tube 4 of the present invention may be coupled with a flange 20, as shown in fig. 14.
The pipe diameters of the inflow pipe 1, the equidirectional outflow pipe 2, the first lateral outflow pipe 3 and the second lateral outflow pipe 4 can be the same or different.
The structure of a low-pressure-drop fluid medium distribution device provided by the invention is shown in fig. 1-4 when the inflow pipe fluid medium is in a fully developed state and needs to be uniformly divided into three parts, the structure is that the fluid medium is methanol, the flow rate is 1.5m/s, the distribution method and the device comprise a standard four-way structure with the nominal diameter of 500mm, the four-way structure is provided with an inflow pipe 1, a cocurrent outflow pipe 2 and two lateral outflow pipes 3 and 4, the two lateral outflow pipes are coaxially arranged, a four-way or cross-like inner cavity is internally provided with two flow baffles 5 and 6 with the thickness of 8mm around the center o of the inflow pipe in the direction from the inflow pipe 1 to the cocurrent outflow pipe 2, each flow baffle is connected with a horizontal baffle 7 extending from the bottom of the lateral outflow pipe 3 or 4 at a position flush with the pipe bottom, the horizontal baffle 7 is a fan-shaped flow partition, the fan-shaped baffle 7 is a part with the fan-shaped flow, the fan-shaped flow wall thickness of the lateral outflow pipe 3 or 4 is consistent with the wall thickness of the lateral outflow pipe 3, the flow guide pipe 3 or 4, the flow guide is connected with the lateral outflow pipe 3, the straight inflow pipe 3 or the straight outflow pipe 3, the straight flow guide tube 2, the flow partition 7, the straight flow partition is connected with the straight flow partition 7, the straight partition, the.
Another structure of a low pressure drop fluid medium distribution device according to the present invention is shown in fig. 5-8, based on the situation shown in fig. 1, another structural treatment is performed on the horizontal baffle plate 7, the baffle plate 7 is a semicircular part below the axial center line of the lateral outflow pipes 3 and 4, such as a semicircle cde in fig. 6, extends from the intersection a and b of the bottom of the lateral outflow pipes 3 and 4 and the same direction outflow pipe 2 to the center line direction of the inflow pipe 1 and the same direction outflow pipe 2, and ends at the intersection with the baffle plates 5 and 6, and is welded to divide the inflow pipe into four guide flow areas, such as sectors 8, 9, 10, and 11, and the rest is the same as the embodiment shown in fig. 1.
Another structure of a low pressure drop fluid medium distribution device according to the present invention is shown in fig. 9 to 11, based on the situation shown in fig. 1, another structural treatment is performed on the body of the distribution device, the nominal diameter of the inflow tube 1 and the cocurrent outflow tube 2 of the device is 500mm, the first flow divider 5 and the lateral outflow tube b-e are axially ∠ aob ═ 30 °, the second flow divider 6 and the lateral outflow tube b-e are axially ∠ doe ═ 30 °, the flow dividers 5 and 6 are welded to the inner wall of the cross-way or the like and intersect at a, c, d, and f, the positions of the inlet ends of the lateral outflow tubes 3 and 4 are a, c, d, and f, the nominal diameters of the outlet ends and ij are equal to the nominal diameters of the inflow tube 1 and the cocurrent outflow tube 2, and are 500 mm.
Another structure of a low pressure drop fluid medium distribution device according to the present invention is shown in fig. 9-11, based on the situation shown in fig. 1, another structure treatment is performed on the connection between the diversion areas 10 and 11 and the flow baffle 7, and the connection between the flow baffle 7 and the co-current outflow pipe 2, the intersection g and h between the diversion areas 10 and 11 and the flow baffle 7 is processed by an arc inscribed in a circle, and the intersection between the bottom of the lateral outflow openings 3 and 4 and the intersection between the flow baffle 7 and the co-current outflow pipe 2 is processed by a right angle, so as to further reduce the pressure loss of the fluid, and the rest is the same as the embodiment shown in fig. 1.
Specifically, as shown in fig. 15-20, when the fluid medium is in an insufficiently developed state and the flow rate is "one-in-two", the distribution device body has a three-way or three-like structure, and the outflow pipes have two, namely, a third lateral outflow pipe 12 and a fourth lateral outflow pipe 13 which are respectively located on both sides of the inflow pipe 1; the separating mechanism is a flow separating plate 14 arranged along the flow direction of the inflow pipe 1, the front end of the flow separating plate 14 is fixed to the inner wall of the distribution device main body from the pipe orifice of the inflow pipe, the two sides and the rear end of the flow separating plate 14 are both fixed to the inner wall of the distribution device main body, and the flow separating plate 14 separates the distribution device main body into a fifth flow guiding area 15 communicated with the third lateral outflow pipe 12 and a sixth flow guiding area 16 communicated with the fourth lateral outflow pipe 13.
The flow divider 14 of the present invention forms a certain angle with the axial direction of the third lateral outflow tube 12 or the fourth lateral outflow tube 13, the angle ranges from 0 ° to 90 °, and forms a certain distance with the center o of the inflow tube in the axial direction of the third lateral outflow tube 12 or the fourth lateral outflow tube 13, the distance ranges from more than 0mm to no more than the radius value of the inflow tube 1. The axial angle between the flow divider 14 and the third lateral outflow pipe 12 or the fourth lateral outflow pipe 13 and the distance between the axial direction of the third lateral outflow pipe 12 or the fourth lateral outflow pipe 13 and the circle center o of the inflow pipe 1 are adjusted to control the flow rate of the fluid medium entering the fifth flow guiding area 15 and the sixth flow guiding area 16, thereby achieving the purpose of distributing the fluid medium in the inflow pipe 1.
The inflow tube 1, the third lateral outflow tube 12 and the fourth lateral outflow tube 13 according to the present invention can be used in cooperation with the flange 20.
When the fluid medium in the inflow pipe is insufficientIn the development state and when the flow needs to be uniformly divided into two parts, as shown in fig. 15, the following situation in the document "simulation analysis of flow measurement characteristics of existing elbows in heat supply pipeline" is taken as an example: the fluid medium is water, the temperature is 50 ℃, and the flow rate is 58m3H, velocity of 0.912m/s, Reynolds number of 2.46x105The turbulence intensity is 3.3903%, the turbulence flow enters from a pipeline with nominal diameter DN150mm, passes through a straight pipe section 17 with length 7D (D is the diameter of the pipeline), enters an elbow 18 (the bending ratio of the elbow is R is 2D), passes through a straight pipe section with length 2D after exiting the elbow 18, reaches an inflow pipe 1 in the range 19 of the distribution device, the average speed cloud pattern at the inflow pipe 1 is shown in figure 19. the structure of the low-pressure fluid-reducing medium distribution device of the invention is shown in figure 16, and comprises a standard three-way structure with nominal diameter 150mm, the three-way structure is provided with an inflow pipe 1 and side outflow pipes 12 and 13 which are coaxially arranged, in the three-way cavity, a flow partition plate 14 is arranged in the direction parallel to the inflow pipe 1, the thickness of the flow partition plate is 3mm, the height of the flow partition plate is equal from the opening of the inflow pipe 1 to the bottom of the side outflow pipes 12 and 13, the two sides of the flow partition plate are connected with the inner wall of the three-way, the flow partition plate is connected with the outflow pipe b-D, the flow partition plate, the axial direction is ∠ b is equal to the flow guide pipe 1, the flow area is calculated as shown in figure 16, the flow area A, the flow area is calculated as the flow area A-15 area, the flow area is shown in figure 16, the flow area is calculated as the flow area, the flow area I15-15 area, the flow area is shown in figure 16, the flow area is shown in the flow area3And/s, one half of the fluid medium is respectively led into the two lateral outflow pipes 12 and 13 through the flow guide areas 15 and 16, so that the purpose that the fluid medium in the inflow pipes is uniformly divided into two parts is realized.
Table 1 table of results of area flow rate calculation of the pilot regions 15 and 16
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and certainly not to limit the patent scope of the present invention; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention; that is, the technical problems to be solved by the present invention, which are not substantially changed or supplemented by the spirit and the concept of the main body of the present invention, are still consistent with the present invention and shall be included in the scope of the present invention; in addition, the technical scheme of the invention is directly or indirectly applied to other related technical fields, and the same principle is included in the patent protection scope of the invention.
Claims (9)
1. A low pressure drop fluid media distribution device, comprising: the distribution device comprises a distribution device main body in a pipe cavity structure, an inflow pipe (1) communicated with the distribution device main body, at least two outflow pipes communicated with the distribution device main body, and a separation mechanism arranged in the distribution device main body and used for separating an inner cavity of the distribution device main body into a plurality of flow guide areas, wherein the number of the flow guide areas is the same as that of the outflow pipes, and the flow guide areas are communicated in a one-to-one correspondence manner.
2. A low pressure drop fluid medium distribution device as defined in claim 1, when the fluid medium flow rate is "one-to-three", characterized by: the distribution device main body is of a four-way structure or a four-way-like structure, the number of the outflow pipes is three, the outflow pipes are respectively a same-direction outflow pipe (2), a first lateral outflow pipe (3) and a second lateral outflow pipe (4), the flow directions of the same-direction outflow pipe (2) and the inflow pipe (1) are the same, and the first lateral outflow pipe (3) and the second lateral outflow pipe (4) are respectively positioned on two sides of the inflow pipe (1);
the separation mechanism comprises a first flow partition plate (5) and a second flow partition plate (6) which are mutually distributed in a cross way, the first flow clapboard (5) and the second flow clapboard (6) are positioned in the distribution device main body and arranged along the flowing direction of the inflow pipe (1), the front ends of the first flow baffle (5) and the second flow baffle (6) are arranged at the pipe orifice of the inflow pipe (1), flow baffles (7) respectively extend out of the tube bottoms of the first lateral outflow tube (3) and the second lateral outflow tube (4) towards the axial lead direction of the flow direction of the distribution device main body, the rear ends of the first flow baffle (5) and the second flow baffle (6) are respectively connected with a corresponding flow baffle (7), the side edges of the first flow partition plate (5) and the second flow partition plate (6) are fixedly connected with the inner walls of the distribution device body and the inflow pipe (1);
the distribution device body is divided into a first flow guide area (8) and a second flow guide area (9) which are communicated with the equidirectional outflow pipe (2), a third flow guide area (10) which is communicated with the first lateral outflow pipe (3) and a fourth flow guide area (11) which is communicated with the second lateral outflow pipe (4) by the first flow partition plate (5), the second flow partition plate (6) and the flow baffle plate (7).
3. A low pressure drop fluid media distribution device as claimed in claim 2, wherein: the first flow partition plate (5) and the second flow partition plate (6) respectively form a certain angle with the axial direction of the first lateral outflow pipe (3) and the second lateral outflow pipe (4), the angle ranges from 0 degree to 90 degrees, and a certain distance is formed between the axial direction of the first lateral outflow pipe (3) and the second lateral outflow pipe (4) and the circle center o of the inflow pipe, and the distance range is not less than 0mm and not more than the radius value of the inflow pipe (1); and adjusting the axial angle between the first flow partition plate (5) or the second flow partition plate (6) and the first lateral outflow pipe (3) or the second lateral outflow pipe (4), and the distance between the axial direction of the first lateral outflow pipe (3) or the second lateral outflow pipe (4) and the circle center o of the inflow pipe, and controlling the flow rate of the fluid medium entering the first flow guide area (8), the second flow guide area (9), the third flow guide area (10) and the fourth flow guide area (11), thereby realizing the distribution purpose of the fluid medium of the inflow pipe (1).
4. A low pressure drop fluid media distribution device as claimed in claim 2, wherein: the fluid inlet end of the first lateral outflow pipe (3) or the second lateral outflow pipe (4) can be in a standard four-way structure, or the position of the connection position of the two sides of the first flow partition plate (5) and the second flow partition plate (6) and the four-way structure is adopted.
5. A low pressure drop fluid media distribution device as claimed in claim 2, wherein: the flow baffle (7) is a horizontal baffle or an arc baffle with a semicircular cross section, and when the flow baffle is the horizontal baffle, the flow baffle (7) extends out of the level position of the pipe bottom of the first lateral outflow pipe (3) or the second lateral outflow pipe (4) and is connected with the intersection of the first flow baffle (5) and the second flow baffle (6); when the baffle plate is an arc baffle plate, the baffle plate is formed by connecting a semicircular part below the axial center line of the first lateral outflow pipe (3) or the second lateral outflow pipe (4) with the intersection of the first flow clapboard (5) and the second flow clapboard (6).
6. A low pressure drop fluid media distribution device as claimed in claim 2, wherein: the connection between the flow baffle (7) and the first flow baffle (5) or the second flow baffle (6) and the connection between the flow baffle (7) and the co-current outflow pipe (2) can be right-angled, internally tangent to a circle, or externally tangent to a circle.
7. A low pressure drop fluid medium distribution device as defined in claim 1, when the fluid medium is under-developed condition and the flow rate is "one-to-two", wherein: the distribution device main body is of a three-way or three-way-like structure, and the number of the outflow pipes is two, namely a third lateral outflow pipe (12) and a fourth lateral outflow pipe (13) which are positioned at two sides of the inflow pipe (1); the separating mechanism is a flow separating plate (14) arranged along the flowing direction of the inflow pipe (1), the front end of the flow separating plate (14) is arranged from the pipe orifice of the inflow pipe (1), two side edges and the rear end of the flow separating plate (14) are fixedly connected with the inner wall of the distribution device main body, and the flow separating plate (14) separates the distribution device main body into a fifth flow guiding area (15) communicated with the third lateral outflow pipe (12) and a sixth flow guiding area (16) communicated with the fourth lateral outflow pipe (13).
8. A low pressure drop fluid media distribution device as claimed in claim 7, wherein: the flow partition plate (14) and the third lateral outflow pipe (12) or the fourth lateral outflow pipe (13) form a certain angle in the axial direction, the angle range is 0-90 degrees, and a certain distance is formed between the third lateral outflow pipe (12) or the fourth lateral outflow pipe (13) and the circle center o of the inflow pipe in the axial direction, and the distance range is larger than 0mm and not larger than the radius value of the inflow pipe (1). And adjusting the axial angle between the flow partition plate (14) and the third lateral outflow pipe (12) or the fourth lateral outflow pipe (13), and the distance between the axial direction of the third lateral outflow pipe (12) or the fourth lateral outflow pipe (13) and the circle center o of the inflow pipe (1), controlling the flow rate of the fluid medium entering the fifth flow guide area (15) and the sixth flow guide area (16), and realizing the distribution purpose of the fluid medium in the inflow pipe (1).
9. A low pressure drop fluid media distribution device as claimed in claim 2 and claim 7, wherein: the inflow tube (1), the cocurrent outflow tube (2), the first lateral outflow tube (3), the second lateral outflow tube (4), the third lateral outflow tube (12) and the fourth lateral outflow tube (13) can be matched with a flange (20) for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911271095.XA CN111076016B (en) | 2019-12-12 | Low pressure drop fluid medium distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911271095.XA CN111076016B (en) | 2019-12-12 | Low pressure drop fluid medium distribution device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111076016A true CN111076016A (en) | 2020-04-28 |
| CN111076016B CN111076016B (en) | 2024-06-04 |
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