CN209879921U - Pipeline comprehensive experiment system device - Google Patents
Pipeline comprehensive experiment system device Download PDFInfo
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- CN209879921U CN209879921U CN201920067183.7U CN201920067183U CN209879921U CN 209879921 U CN209879921 U CN 209879921U CN 201920067183 U CN201920067183 U CN 201920067183U CN 209879921 U CN209879921 U CN 209879921U
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Abstract
The utility model discloses a pipeline comprehensive experiment system device. The device is provided with a water feeder which is an open water tank; the water supply device is connected with the inlet of the water pump, and the outlet of the water pump is connected with the inlet of the water stabilizing tank; the water stabilizing tank is internally provided with a water stabilizing plate and is connected with a series of pipelines, a plurality of test sections are arranged on the pipelines, and pressure measuring points are arranged on the test sections and are connected with a pressure instrument or a pressure gauge. The water flow can be read by a flow meter arranged at the outlet of the pipeline, and the flow velocity of each section can be obtained by conversion according to the area of each section. And measuring the pressure measuring pipe water head of each test section along the experimental pipeline through the pressure measuring points, calculating to obtain a total water head, and finally verifying the Bernoulli equation. The utility model discloses a change huge construction method of structure in the past, reduce its whole experimental system and simplify, adopted the mode of innovation to establish ties various special sections, it is easy and simple to handle directly perceived, and be suitable for modern teaching requirement, also saved the experiment simultaneously and arranged the place.
Description
Technical Field
The utility model belongs to the laboratory glassware field especially relates to a pipeline comprehensive experiment system device.
Background
The rapid development of industrial and agricultural production, in order to make the design of the pipeline more reasonable and meet the actual production requirements, the determination of the design parameters of the pipeline is more important. A pipeline comprehensive experiment system device integrates an energy equation of constant flow of incompressible liquid, along-way resistance and local resistance, has various experiment contents, and has the physical significance that in the process that water flows from one section to another section, potential energy, pressure energy and kinetic energy of unit weight liquid can be converted mutually, but the unit total mechanical energy of the former section is equal to the sum of the unit total mechanical energy of the latter section and the energy loss of fluid between the two sections, and the energy loss is dissipated in the form of heat energy, so that the conversion between the energy and other three items of energy is irreversible. Bernoulli's equation teaching experiment is one of the important teaching contents of hydraulics and hydrodynamics. When the streamlines of the water flow are straight lines parallel to each other, the water flow is called uniform flow. When the included angle between the streamlines of the water flow is large or the curvature radius of the streamlines is small, the water flow is called a sudden flow.
The students can perform demonstration experiments, verification experiments and comprehensive experiments on the pipeline comprehensive experiment and can also train the ability of the students to comprehensively analyze and solve problems by using different thinking modes and experiment principles.
The pipeline comprehensive experiment system device is an experiment instrument specially used for carrying out Bernoulli equation experiments. However, the conventional pipeline instrument has certain disadvantages: firstly, the experiment must be carried out under the condition of constant pressure, and a larger water supply system and an overflow system are required for a constant pressure water level, so that the occupied area is large; secondly, the water body is greatly disturbed by vibration, and the water body is difficult to stabilize for a while; thirdly, the pipeline is complex, the operation is complex, the modern experimental teaching is inconvenient, and students can be cultured from different angles emphatically and the problems can be solved by different methods.
Disclosure of Invention
The utility model discloses a prior art defect is solved to the purpose to a pipeline comprehensive experiment system device is provided.
A pipeline comprehensive experiment system device is provided with a water feeder; the water supply device is an open water tank; the water supply device is connected with the inlet of the water pump, and the outlet of the water pump is connected with the inlet of the water stabilizing tank; a water stabilizing plate is arranged in the water stabilizing tank; the outlet of the water stabilizing tank is horizontally connected with the inlet of the first right-angle bent pipe; the outlet of the first right-angle bent pipe is vertically upward and is connected with sequentially connected vertical pipelines, and the first straight-angle bent pipe sequentially comprises a first round-square reducing pipe, a uniform square pipe and a first square-round reducing pipe from bottom to top; the outlet of the square-round reducer pipe is connected with the inlet of a second right-angle elbow pipe; the outlet of the second right-angle elbow is connected with the horizontal pipelines which are connected in sequence, and the horizontal pipelines are a first equal-diameter uniform pipe, a divergent pipe, a uniform thick pipe, a convergent pipe and a second equal-diameter uniform pipe in sequence; the outlet of the second equal-diameter uniform pipe is connected with the inlet of the equal-diameter uniform bent pipe; the bend angle of the equal-diameter uniform elbow is 180 degrees, and the outlet of the equal-diameter uniform elbow is positioned right below the inlet; the outlet of the equal-diameter uniform bent pipe is horizontally connected with the inlet of the sudden expansion pipe; a first pitot tube is arranged on the sudden expansion tube; the outlet of the sudden expansion pipe is connected with the inlet of the second round-square reducer pipe; the outlet of the second round-square reducer pipe is connected with a rectangular section bent pipe; the bent angle of the rectangular section elbow is 180 degrees, and the outlet of the bent angle is positioned right below the inlet of the rectangular section elbow; a second pitot tube is arranged at the 90-degree bend angle of the rectangular section bent tube; the outlet of the rectangular section bent pipe is horizontally connected with a square-round reducer pipe, a projecting shrinkage pipe and a water return pipe which are connected in sequence; the outlet of the water return pipe is downward and is positioned above the water feeder; the water return pipe is sequentially provided with a flow instrument and a valve along the water flow direction. Further preferably, the flow meter may be an electromagnetic flow meter or a vortex shedding flow meter, etc.
Preferably, the water pump is arranged outside the water supply device or is arranged in the water supply device by adopting a submersible pump.
Preferably, at least two groups of test sections are respectively arranged on the uniform square pipe, the first equal-diameter uniform pipe, the divergent pipe, the uniform thick pipe, the reducing pipe, the second equal-diameter uniform pipe, the equal-diameter uniform bent pipe, the rectangular section bent pipe and the projecting pipe; at least two pressure measuring points are arranged on each group of test section.
Preferably, the inner ring and the outer ring of the equal-diameter uniform bent pipe are respectively provided with a pressure measuring point.
Preferably, the inner ring and the outer ring of the rectangular section elbow are respectively provided with a pressure measuring point.
Preferably, the sudden expansion pipe and the sudden contraction pipe are provided with not less than 5 pressure measuring points along the water flow direction, and the distance between the pressure measuring points is not more than twice of the diameter d of the thin pipe.
Preferably, the pressure measuring point is connected with a pressure meter or a pressure gauge.
Preferably, the first and second pitot tubes are arranged with graduations.
The utility model discloses following beneficial effect has:
1) the experimental instrument with a huge structure in the past is changed, the whole experimental system is reduced and simplified, the operation is simple, convenient and visual, the experimental instrument is suitable for modern teaching requirements, and meanwhile, the experimental arrangement field is saved;
2) a novel pressure measuring system is applied, so that the operation is easy, convenient and accurate;
3) and an innovative series water supply system is adopted, so that the experimental water body is repeatedly utilized, and the resources are saved.
Drawings
Fig. 1 is a schematic structural diagram of a pipeline comprehensive experiment system device.
Wherein: the device comprises a water feeder-1, a water pump-2, a water stabilizing plate-3, a first right-angle bent pipe-4, a first round-square reducer-5, a water stabilizing tank-6, a uniform square pipe-7, a first square-round reducer-8, a second right-angle bent pipe-9, a first equal-diameter uniform pipe-11, a gradually expanding pipe-12, a uniform thick pipe-13, a reducer-14, a second equal-diameter uniform pipe-15, an equal-diameter uniform bent pipe-16, a sudden-expanding pipe-17, a first pitot tube-18, a second round-square reducer-19, a rectangular cross-section bent pipe-20, a second pitot tube-21, a second square-round reducer-22, a sudden-contracting pipe-23, a flow instrument-24, a water return pipe-25 and a valve-26.
Detailed Description
Fig. 1 shows a preferred embodiment of the present invention.
As shown in the drawing, a pipe-line integrated experimental system apparatus has a water feeder 1. The water feeder 1 is an open water tank. The water feeder 1 is connected with the inlet of the water pump 2, and the outlet of the water pump 2 is connected with the inlet of the water stabilizing tank 6. The water pump (2) is arranged outside the water supply device (1) or is arranged in the water supply device (1) by adopting a submersible pump. The water stabilizing plate 3 is arranged in the water stabilizing tank 6, and the water stabilizing plate 3 is used for stabilizing water pressure.
The outlet of the water stabilizing tank 6 is horizontally connected with the inlet of the first right-angle elbow 4. The outlet of the first right-angle elbow 4 is vertically upward and is connected with a vertical pipeline which is connected in sequence, and the first round-square reducing pipe 5, the uniform square pipe 7 and the first square-round reducing pipe 8 are arranged from bottom to top in sequence. The outlet of the square-round reducer 8 is connected with the inlet of a second right-angle elbow 9. The outlet of the second right-angle elbow 9 is connected with the horizontal pipelines which are connected in sequence, and the horizontal pipelines are a first equal-diameter uniform pipe 11, a gradually expanding pipe 12, a uniform thick pipe 13, a gradually reducing pipe 14 and a second equal-diameter uniform pipe 15 in sequence. The outlet of the second equal-diameter uniform pipe 15 is connected with the inlet of the equal-diameter uniform elbow pipe 16. The equal diameter uniform elbow 16 has a bend angle of 180 ° and its outlet is located directly below the inlet. The outlet of the equal-diameter uniform elbow 16 is horizontally connected with the inlet of the sudden expansion pipe 17. A first pitot tube 18 is disposed on the flare 17. The outlet of the sudden expansion pipe 17 is connected with the inlet of a second round-square reducer 19. The outlet of the second round-square reducer 19 is connected with a rectangular section elbow 20. The elbow 20 of rectangular cross-section has a bend angle of 180 deg. and its outlet is located directly below its inlet. A second pitot tube 21 is provided at the 90 ° corner of the rectangular cross-section elbow 20. The scales are arranged on the first pitot tube 18 and the second pitot tube 21, so that the degree can be measured in real time, and whether the flow rate is stable or not can be conveniently observed. The outlet of the rectangular section elbow 20 is horizontally connected with a square-round reducer 22, a projecting and contracting pipe 23 and a water return pipe 25 which are connected in sequence. The outlet of the return pipe 25 is downward and the outlet is located above the water feeder 1. The return pipe 25 is provided with a flow meter 24 and a valve 26 in this order along the water flow direction.
The utility model discloses in, circle-square reducing pipe is that the cross section becomes square reducing pipe by circular, and square-circle reducing pipe is that the cross section becomes circular reducing pipe by square, and the equal diameter is the unchangeable even round pipe section of different position diameters for the even pipe of footpath, and even side's pipe is the unchangeable even square pipe section of different position cross section sizes, and even thick pipe is the unchangeable even round pipe section of the interior roughness of surface and different position diameters. The utility model discloses in, various condition in the hydraulics test have been covered almost to the different pipeline sections for the device can satisfy different experimental demands.
The flow meter 24 can select various flow meters meeting the measurement requirements according to the experiment requirements. Set up a plurality of test sections on the pipeline, all be equipped with the pressure measurement point on the test section and be used for measuring this test section's pressure. The pressure measuring point is a connector communicated with the inner cavity of the pipe section, is connected with a pressure instrument or a pressure gauge and can transmit the water pressure at the position to the pressure instrument.
Wherein, the uniform square tube 7, the first equal-diameter uniform tube 11, the divergent tube 12, the uniform thick tube 13, the convergent tube 14, the second equal-diameter uniform tube 15, the equal-diameter uniform elbow tube 16, the rectangular section elbow tube 20 and the projecting tube 23 are respectively provided with at least two groups of test sections. At least two pressure measuring points are arranged on each group of test section. The inner ring (i.e., the inner diameter side, the same below) and the outer ring (i.e., the outer diameter side, the same below) of the equal-diameter uniform elbow 16 are respectively provided with a pressure measuring point. The inner ring and the outer ring of the rectangular section elbow 20 are respectively provided with a pressure measuring point. The sudden expansion pipe 17 and the sudden contraction pipe 23 are provided with no less than 5 pressure measuring points along the water flow direction, and the distance between the pressure measuring points is not more than twice of the diameter d of the thin pipe. In addition, the pressure ports of each pitot tube need to extend into the target location of the lumen of the tube.
The utility model discloses a use method does:
the method comprises the steps of firstly starting a water pump to supply water to a water stabilizing tank, enabling a water body to flow through an experimental pipeline, reading the flow through a flow meter, converting the area of each section to obtain the flow velocity of each section, measuring the pressure measuring pipe water head and the total water head of each tested section along the experimental pipeline through pressure measuring points, and verifying the Bernoulli equation.
The utility model discloses an experiment is followed intraductal rivers direction and is got n test section in the experiment pipeline. The energy equations (i ═ 2,3, …, n) can be listed from one test section (1) to the other (i)
In the formula: z represents the position potential energy (potential energy for short) of the liquid from a certain point reference surface, and is called as a position water head;the pressure potential energy (pressure energy for short) of the liquid relative to the liquid with the pressure of the atmospheric pressure is represented and is called a pressure head; whileThe total potential energy of the liquid is reflected and is exactly equal to the height of the water surface of the piezometer tube at the point, so the total potential energy is called as a piezometer tube water head;representing the kinetic energy possessed by the liquid, known as the flow head.
The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the invention.
Claims (8)
1. The pipeline comprehensive experiment system device is characterized by comprising a water feeder (1); the water feeder (1) is an open water tank; the water feeder (1) is connected with an inlet of the water pump (2), and an outlet of the water pump (2) is connected with an inlet of the water stabilizing tank (6); a water stabilizing plate (3) is arranged in the water stabilizing tank (6); the outlet of the water stabilizing tank (6) is horizontally connected with the inlet of the first right-angle elbow (4); the outlet of the first right-angle bent pipe (4) is vertically upward and is connected with sequentially connected vertical pipelines, and the first round-square reducing pipe (5), the uniform square pipe (7) and the first square-round reducing pipe (8) are sequentially arranged from bottom to top; the outlet of the first square-round reducer pipe (8) is connected with the inlet of a second right-angle elbow (9); the outlet of the second right-angle elbow (9) is connected with the horizontal pipelines which are connected in sequence, and the horizontal pipelines are a first equal-diameter uniform pipe (11), a gradually expanding pipe (12), a uniform thick pipe (13), a reducing pipe (14) and a second equal-diameter uniform pipe (15) in sequence; the outlet of the second equal-diameter uniform pipe (15) is connected with the inlet of the equal-diameter uniform bent pipe (16); the bend angle of the equal-diameter uniform elbow (16) is 180 degrees, and the outlet of the equal-diameter uniform elbow is positioned right below the inlet; the outlet of the equal-diameter uniform bent pipe (16) is horizontally connected with the inlet of the sudden expansion pipe (17); a first pitot tube (18) is arranged on the sudden expansion tube (17); the outlet of the sudden expansion pipe (17) is connected with the inlet of a second round-square reducer pipe (19); the outlet of the second round-square reducer pipe (19) is connected with a rectangular section elbow pipe (20); the bending angle of the rectangular section elbow (20) is 180 degrees, and the outlet of the rectangular section elbow is positioned right below the inlet of the rectangular section elbow; a second pitot tube (21) is arranged at the 90-degree corner of the rectangular section elbow (20); the outlet of the rectangular section elbow (20) is horizontally connected with a second square-round reducer pipe (22), a sudden shrinkage pipe (23) and a water return pipe (25) which are connected in sequence; the outlet of the water return pipe (25) faces downwards, and is positioned above the water feeder (1); the water return pipe (25) is sequentially provided with a flow meter (24) and a valve (26) along the water flow direction.
2. The pipeline comprehensive experimental system device according to claim 1, wherein the water pump (2) is placed outside the water feeder (1) or inside the water feeder (1) by using a submersible pump.
3. The pipeline comprehensive experiment system device according to claim 1, wherein the uniform square pipe (7), the first equal-diameter uniform pipe (11), the divergent pipe (12), the uniform thick pipe (13), the reducer (14), the second equal-diameter uniform pipe (15), the equal-diameter uniform bent pipe (16), the rectangular section bent pipe (20) and the sudden shrinkage pipe (23) are respectively provided with not less than two groups of test sections; at least two pressure measuring points are arranged on each group of test section.
4. The pipeline comprehensive experiment system device according to claim 1, wherein the inner ring and the outer ring of the equal-diameter uniform elbow (16) are respectively provided with a pressure measuring point.
5. The pipeline comprehensive experiment system device according to claim 1, wherein the inner ring and the outer ring of the rectangular cross-section elbow (20) are respectively provided with a pressure measuring point.
6. The pipeline comprehensive experiment system device as claimed in claim 1, wherein the sudden expansion pipe (17) and the sudden contraction pipe (23) are provided with not less than 5 pressure measuring points along the water flow direction, and the distance between the pressure measuring points is not more than twice of the diameter d of the thin pipe thereof.
7. The integrated pipeline experimental system as set forth in any one of claims 3 to 6, wherein said pressure measuring point is connected to a pressure gauge or a pressure gauge.
8. The integrated piping experiment system apparatus of claim 1, wherein the first pitot tube (18) and the second pitot tube (21) are provided with graduations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920067183.7U CN209879921U (en) | 2019-01-14 | 2019-01-14 | Pipeline comprehensive experiment system device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920067183.7U CN209879921U (en) | 2019-01-14 | 2019-01-14 | Pipeline comprehensive experiment system device |
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| CN209879921U true CN209879921U (en) | 2019-12-31 |
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| CN201920067183.7U Active CN209879921U (en) | 2019-01-14 | 2019-01-14 | Pipeline comprehensive experiment system device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272385A (en) * | 2020-02-24 | 2020-06-12 | 中国农业大学 | Test device for visualizing strong transient cavitation flow in pipe |
| CN112461533A (en) * | 2020-11-25 | 2021-03-09 | 扬州大学 | Door flap head loss experiment testing system and using method thereof |
-
2019
- 2019-01-14 CN CN201920067183.7U patent/CN209879921U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111272385A (en) * | 2020-02-24 | 2020-06-12 | 中国农业大学 | Test device for visualizing strong transient cavitation flow in pipe |
| CN111272385B (en) * | 2020-02-24 | 2021-06-29 | 中国农业大学 | Test device for visualizing strong transient cavitation flow in pipe |
| CN112461533A (en) * | 2020-11-25 | 2021-03-09 | 扬州大学 | Door flap head loss experiment testing system and using method thereof |
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