CN112361069A

CN112361069A - Device for eliminating water hammer effect of water pipe start and stop

Info

Publication number: CN112361069A
Application number: CN202011074768.5A
Authority: CN
Inventors: 杨开村
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-02-12

Abstract

The application discloses eliminate device of water pipe start-stop water hammer effect belongs to high-lift feedwater drainage technical field. The utility model provides an eliminate device of water pipe start-stop water hammer effect, including tesla valve pipe and two water valves, the inside pipeline of seta valve pipe, the pipeline has tesla valve structure, the pipeline left end is the import, the pipeline right-hand member is the export, a plurality of subchannels have been seted up on the sprue, all constitute solitary closed circuit between every subchannel and the sprue, it can realize through the friction of each other between the rivers, reduce the water velocity in the twinkling of an eye of water pump start-stop, eliminate the harm of water hammer effect, moreover, the steam generator is simple in structure, the part quantity is few, the development cost is low, need not replace current water valve, can directly be applied to current product, utilize physical structure, utilize the physics principle, need not provide energy source from the external world, the component remains static state all the time, relative no motion trend between, reduce the friction loss of component, improve the life of component.

Description

Device for eliminating water hammer effect of water pipe start and stop

Technical Field

The application belongs to the technical field of high-lift water supply and drainage, and particularly relates to a device for eliminating the water hammer effect of starting and stopping of a water pipe.

Background

Along with the development of economic technology and the application of new equipment and new technology, more and more water supply and drainage equipment with high flow rate and high lift is applied to the engineering fields of buildings, municipal administration, water conservancy and the like, and meanwhile, the water hammer phenomenon in the water supply and drainage engineering with high lift and long distance is also more and more emphasized.

At present, in order to reduce the influence of water hammer, water hammer eliminators are mostly adopted in high-lift and long-distance water supply and drainage projects, but engineering practices show that the water hammer eliminators are installed on a water pump water outlet pipeline simply, and the effect is poor. When the water pump is stopped suddenly, the phenomenon of water hammer is serious, and the service life of the water supply and drainage pipeline is greatly influenced.

In addition, at present, the water hammer is prevented from being generated in a mode that a water pump is slowly started and stopped in high-lift and long-distance water supply and drainage projects. Under the normal condition, this kind of mode can effectively prevent the water hammer, but if meet accident such as power failure suddenly, the water pump suddenly stops the back, and the water hammer of stopping the pump can not avoid, has the potential safety hazard.

In summary, a set of simple, stable and reliable pump-stopping water hammer effect eliminating device is needed in the current high-lift and long-distance water supply and drainage projects.

Content of application

1. Technical problem to be solved

The device can reduce the water flow speed at the moment of starting and stopping the water valve through mutual friction among water flows, eliminates the harm of the water hammer effect, is simple in structure, small in number of parts, low in development cost and suitable for mass production and application, the Tesla valve pipe can replace an existing water valve connecting pipe, the water valve does not need to be replaced, the Tesla valve pipe can be directly applied to an existing product, the physical structure is utilized, the physical principle is utilized, an energy source does not need to be provided from the outside, economy and practicability are achieved, components are always kept in a static state, no movement trend exists relatively, the friction loss of the components is reduced, and the service life of the components is prolonged.

2. Technical scheme

In order to solve the above problems, the present application adopts the following technical solutions.

A device for eliminating the water hammer effect of start and stop of water pipe is composed of a Tesla valve pipe and two water valves.

The pipeline is arranged in the Tesla valve pipe and has a Tesla valve structure.

The left end of the pipeline is an inlet, and the right end of the pipeline is an outlet.

The inlet and the outlet are communicated by a main flow passage.

A plurality of sub-runners are arranged on the main runner, and the plurality of sub-runners are distributed from left to right in sequence.

An independent closed loop is formed between each sub-channel and the main channel, and water flowing through the sub-channels from the main channel finally returns to the main channel.

The Tesla valve tube is detachably connected between the two water valves.

The inlet is communicated with the left water valve.

The outlet is communicated with the right water valve.

Furthermore, the junction of the left side of the main runner and the branch runner is a branch port, the junction of the right side of the main runner and the branch runner is a convergence port, water flows from the inlet to the branch port and then flows out in two paths, one path flows through the branch runner, the other path flows through the main runner, and the two paths of water flows are converged at the convergence port.

Furthermore, the branch channel comprises a straight line section and an arc section, the left end of the straight line section is communicated with the branch port, the right end of the straight line section is communicated with the left end of the arc section, the right end of the arc section is communicated with the gathering port, and the arc section enables water flow to change direction and flow into the main channel again.

Furthermore, the sub-runners are arranged on the upper side and the lower side of the main runner, and the sub-runners are distributed on the main runner from left to right in sequence in the sequence of the upper side and the lower side, so that the mold opening is convenient, the stress on the upper side and the lower side of the pipe body is uniform, and the service life is prolonged.

Furthermore, the sprue is the wave, and the crest is at the upside, and the trough is at the downside, makes rivers flow in the sprue, buffering self potential energy.

Furthermore, the main runner section tending to the wave trough is coaxial with the straight line section of the lower side branch runner, and the main runner end tending to the wave crest is coaxial with the straight line section of the upper side branch runner, so that water flows into the branch runners more quickly and is discharged, and the water flow speed in the main runner is reduced.

Furthermore, the diameters of the main flow passage and the sub flow passages are consistent, so that water flow flowing in from the inlet can be evenly distributed into the main flow passage and the sub flow passages, the water flow in the main flow passage and the sub flow passages has no pressure difference, and the water flow speeds are consistent.

Furthermore, the pipe diameters of the inlet and the outlet are the sum of the pipe diameters of the main runner and the sub-runners, so that the generation of a Venturi effect is reduced, the speed of water flowing into the inlet, the speed of water flowing out of the outlet and the speed of water flowing through the main runner are consistent, and the acceleration of water flow is effectively avoided.

Furthermore, both ends of the water valve can be detachably connected with Tesla valve pipes, two Tesla valve pipes opposite to each other of every two water valves are communicated through a common water pipe, and when the pipes are distributed in a long distance, the use cost is reduced on the premise that the water hammer effect is eliminated.

Furthermore, the included angle between the arc section and the main runner is an angle A, and the angle A is an obtuse angle, so that the impact effect of water flow flowing out of the arc section on water flow in the main runner is stronger.

3. Advantageous effects

Compare in prior art, the advantage of this application lies in:

(1) the scheme provides a new technical idea, and reduces the water flow speed at the moment of starting and stopping the water valve and eliminates the harm of the water hammer effect through mutual friction between water flows.

(2) The scheme has the advantages of simple structure, small number of parts and low development cost, and is suitable for mass production and application.

(3) The Tesla valve pipe can replace the existing water valve connecting pipe, does not need to replace a water valve, and can be directly applied to the existing products.

(4) The scheme utilizes a physical structure and applies a physical principle, does not need to provide energy sources from the outside, and is economical and practical.

(5) The components of the scheme are always in a static state, no movement trend exists between the components, the friction loss of the components is reduced, and the service life of the components is prolonged.

Drawings

Fig. 1 is a schematic perspective cross-sectional view of a first embodiment of the present application;

FIG. 2 is a schematic perspective sectional view of a Tesla valve tube according to a first embodiment of the present application;

fig. 3 is a schematic structural diagram of a runner according to a first embodiment of the present application;

fig. 4 is a schematic structural diagram of a main flow passage according to a first embodiment of the present application;

fig. 5 is a schematic structural diagram of a runner according to a third embodiment of the present application.

The reference numbers in the figures illustrate:

the valve comprises a Tesla valve pipe 1, an inlet 101, an outlet 102, a branch passage 103, a main passage 104, a branch opening 105, an arc section 106, a convergence opening 107, a straight line section 108 and a water valve 2.

Detailed Description

The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those of ordinary skill in the art without any inventive work based on the embodiments in the present application belong to the protection scope of the present application.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The first embodiment is as follows: referring to fig. 1-4, the device for eliminating the water hammer effect of water pipe start and stop comprises a tesla valve pipe 1 and two water valves 2.

The Tesla valve pipe 1 is internally provided with a pipeline which has a Tesla valve structure.

The left end of the pipeline is an inlet 101, and the right end of the pipeline is an outlet 102.

The Tesla valve tube 1 is detachably connected between two water valves 2.

The inlet 101 is in communication with the left water valve 2.

The outlet 102 communicates with the right water valve 2.

Inlet 101 communicates with outlet 102 via primary flow passage 104.

Subchannel 103 has all been seted up to sprue 104 upside and downside, and a plurality of subchannels 103 distribute with the order of "upside, downside" from a left side to the right side from one order to one order on sprue 104, make things convenient for the die sinking preparation, make both sides atress about the body even, increase of service life.

The junction of the left side of the branch channel 103 and the main channel 104 is a branch port 105, the junction of the right side of the branch channel 103 and the main channel 104 is a convergence port 107, water flows from the inlet 101 to the branch port 105 and then flows out in two paths, one path flows through the branch channel 103, the other path flows through the main channel 104, the two paths of water flow are converged at the convergence port 107, an independent closed loop is formed between each branch channel 103 and the main channel 104, and water flowing from the main channel 104 through the branch channel 103 finally returns to the main channel 104, so that the speed of the water flow in the main channel 104 is reduced.

The branch passage 103 comprises a straight line section 108 and an arc section 106, the left end of the straight line section 108 is communicated with the branch opening 105, the right end of the straight line section 108 is communicated with the left end of the arc section 106, the right end of the arc section 106 is communicated with the convergence opening 107, and the arc section 106 enables water flow to change direction and flow into the main passage 104 again.

Main runner 104 is the wave, and the crest is at the upside, and the trough is at the downside, makes rivers flow in main runner 104, buffers self potential energy, effectively slows down the water velocity in the main runner 104.

The section of the main runner 104 tending to the wave trough is coaxial with the straight line section 108 of the lower side sub-runner 103, and the end of the main runner 104 tending to the wave crest is coaxial with the straight line section 108 of the upper side sub-runner 103, so that water flow can quickly flow into the sub-runners 103 and be discharged, and the water flow speed in the main runner 104 is further reduced.

The diameters of the main flow passage 104 and the sub flow passages 103 are consistent, so that water flowing into the inlet 101 can flow into the main flow passage 104 and the sub flow passages 103 evenly, the water flow in the main flow passage 104 and the sub flow passages 103 has no pressure difference, and the water flow speeds are consistent.

If the pipe diameter of the main flow passage 104 is smaller than that of the sub-flow passages 103, the flow velocity in the main flow passage 104 is larger than that in the sub-flow passages 103, and a reverse effect is generated. If the pipe diameter of the main runner 104 is larger than that of the sub-runners 103, the flow rate in the sub-runners 103 is larger than that in the main runner 104, but the flow rate of water flow in the sub-runners 103 is reduced, the effect of slowing down the flow rate in the main runner 104 is not obviously improved, the manufacturing process of different pipe diameters is difficult, the cost is increased, and the repayment is not realized.

The pipe diameters of the inlet 101 and the outlet 102 are the sum of the pipe diameters of the main flow passage 104 and the sub-flow passage 103, so that the generation of a Venturi effect is reduced, the speed of water flowing into the inlet 101, the speed of water flowing out of the outlet 102 and the speed of water flowing through the main flow passage 104 are consistent, and the acceleration of water flow is effectively avoided.

If the pipe diameter of the inlet 101 is larger than the sum of the pipe diameters of the main runner 104 and the sub-runners 103, the water flow flowing into the main runner 104 and the sub-runners 103 can obtain an acceleration effect. If the pipe diameter of the outlet 102 is smaller than the sum of the pipe diameters of the main flow passage 104 and the sub-flow passages 103, the water flow flowing out of the outlet 102 can obtain an acceleration effect. The manufacturing process of different pipe diameters is difficult, the cost is increased, and the loss is not paid.

The second embodiment is as follows: different from the specific embodiment, two ends of the water valve 2 can be detachably connected with the Tesla valve pipes 1, every two Tesla valve pipes 1 opposite to the water valve 2 are communicated by a common water pipe, and when the pipes are distributed in a long distance, the cost of the Tesla valve pipes 1 is higher than that of the common water pipe, so that the use cost can be reduced on the premise of ensuring the elimination of the water hammer effect.

The third concrete embodiment: different from the first embodiment, please refer to the device for eliminating the water hammer effect of water pipe start and stop in fig. 5, an included angle between the arc section 106 and the main channel 104 is an angle a, and the angle a is an obtuse angle, so that the impact effect of the water flow flowing out of the arc section 106 on the water flow in the main channel 104 is stronger, and the deceleration effect of the water flow in the main channel 104 is more obvious.

The working principle is as follows: the instantaneous start-stop of water valve 2 can lead to the speed instantaneous increase or the reduction of rivers in the water pipe, can produce the water hammer effect and lead to the fact the destruction to the water pipe body.

Through being connected water valve 2 and tesla valve pipe 1, rivers flow through tesla valve pipe 1, make the acceleration of rivers reduce, and the velocity of flow change is slower, reduces the production of water hammer effect.

When water flows into the main channel 104 and the sub-channels 103 from the inlet 101, the water flows in the sub-channels 103 finally flow into the main channel 104 again, impact friction is generated on the water flow in the main channel 104, and the flow speed in the main channel 104 is reduced.

The main flow passage 104 is wavy, so that partial potential energy is offset when water flows in the main flow passage 104.

The damage of the water hammer effect to the water pipe and the water valve 2 is eliminated by reducing the water flow speed in the Tesla valve pipe 1.

The water valve 2 connecting pipe can be replaced by the Tesla valve pipe 1, the water valve 2 does not need to be replaced, the water valve 2 can be directly applied to the existing products, the physical structure is utilized, the physical principle is applied, an energy source does not need to be provided from the outside, economy and practicability are realized, the components are always kept in a static state, no movement trend exists relatively, the friction loss of the components is reduced, and the service life of the components is prolonged.

The foregoing is only a preferred embodiment of the present application; the scope of protection of the present application is not limited thereto. Any person skilled in the art should be able to cover all equivalent or changes within the technical scope of the present disclosure, which is equivalent to the technical solution and the improvement concept of the present disclosure, and the protection scope of the present disclosure.

Claims

1. The utility model provides a eliminate device of water pipe start-stop water hammer effect which characterized in that: comprises a Tesla valve tube (1) and two water valves (2);

a pipeline is arranged in the Tesla valve pipe (1), and the pipeline has a Tesla valve structure;

the left end of the pipeline is provided with an inlet (101), and the right end of the pipeline is provided with an outlet (102);

the inlet (101) is communicated with the outlet (102) through a main flow passage (104);

a plurality of sub-runners (103) are arranged on the main runner (104);

an independent closed loop is formed between each branch runner (103) and the main runner (104);

the Tesla valve tube (1) is detachably connected between the two water valves (2);

the inlet (101) is communicated with the left water valve (2);

the outlet (102) is communicated with the right water valve (2).

2. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 1, wherein: the junction of the left side of the main flow channel (104) and the branch channel (103) is a branch port (105), and the junction of the right side of the main flow channel (104) and the branch channel (103) is a convergence port (107).

3. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 2, wherein: the branch passage (103) comprises a straight line section (108) and an arc section (106), the left end of the straight line section (108) is communicated with the branch opening (105), the right end of the straight line section (108) is communicated with the left end of the arc section (106), and the right end of the arc section (106) is communicated with the convergence opening (107).

4. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 3, wherein: subchannel (103) have all been seted up to main flow channel (104) upside and downside, and a plurality of subchannel (103) are in order from a left side to the right side in the order of "upside, downside" and distribute gradually on main flow channel (104).

5. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 3, wherein: the main flow channel (104) is wave-shaped, the wave crest is on the upper side, and the wave trough is on the lower side.

6. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 5, wherein: the section of the main runner (104) which tends to the wave trough is coaxial with the straight line section (108) of the lower side branch runner (103), and the end of the main runner (104) which tends to the wave crest is coaxial with the straight line section (108) of the upper side branch runner (103).

7. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 1, wherein: the main runner (104) and the sub-runners (103) have the same pipe diameter.

8. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 1, wherein: the pipe diameters of the inlet (101) and the outlet (102) are the sum of the pipe diameters of the main runner (104) and the sub-runners (103).

9. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 1, wherein: both ends of the water valves (2) can be detachably connected with Tesla valve pipes (1), and two Tesla valve pipes (1) opposite to each other of every two water valves (2) are communicated through a common water pipe.

10. The device for eliminating the water hammer effect of starting and stopping of the water pipe according to claim 1, wherein: the included angle between the arc section (106) and the main flow channel (104) is an angle A, and the angle A is an obtuse angle.