CN215609015U - Novel water suction pipe with cyclone prevention function - Google Patents
Novel water suction pipe with cyclone prevention function Download PDFInfo
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- CN215609015U CN215609015U CN202121281492.8U CN202121281492U CN215609015U CN 215609015 U CN215609015 U CN 215609015U CN 202121281492 U CN202121281492 U CN 202121281492U CN 215609015 U CN215609015 U CN 215609015U
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Abstract
The utility model discloses a novel water suction pipe with a vortex prevention function, which comprises a water suction pipe connecting part, wherein the water suction pipe connecting part is connected with one end of a straight pipe through a flange plate, the other end of the straight pipe is connected with a vortex preventer, the vortex preventer comprises a plurality of guide channels communicated with the straight pipe, and the vortex direction of each guide channel is opposite to that of an external vortex. The utility model can eliminate the water-absorbing rotational flow, improve the water-absorbing efficiency, ensure the fire-fighting water supply safety, reduce the minimum effective water level height of the fire pool (tank) to the maximum extent, reduce the invalid water volume and save the investment. Simple structure, low cost and long service life. The installation, the overhaul and the maintenance are convenient.
Description
Technical Field
The utility model relates to the field of water absorption devices of water fire-fighting systems. In particular to a novel water suction pipe with a rotational flow prevention function, which is suitable for water suction of a water suction pipe of a fire pump house in general industry, civil buildings and municipal administration and water suction of a water outlet pipe of a roof high-level fire water tank.
Background
At present, a conical bell mouth made of common welded steel plates according to a national standard drawing is used as a water suction port of a fire water pump suction pipe, a fire water outlet pipe of a roof high-level fire water tank is only butted after a pipe orifice and a wall of the fire water tank are provided with a hole, and the water outlet pipe is connected with the wall of the fire water tank in a welding mode when the metal water tank is in a state of being connected with the fire water tank in a welding mode. The water suction port forms usually have higher minimum effective water level or poorer hydraulic conditions, and the phenomenon of cyclone gas introduction is easily generated during working, so that the phenomenon of cavitation of the impeller of the fire water pump damages the water pump and the phenomenon of gas resistance of a fire pipe network are caused.
Through setting up the special water pipe mouth of novel fire control of taking whirl preventer function, not only can improve the hydraulic condition of fire water pump suction pipe, can also reduce the minimum effective water level of fire control by a wide margin, improve the effective volume of fire-fighting water pond (water tank), reduce invalid pond volume, save the investment of fire control facility, can avoid water pump cavitation simultaneously, the safe and reliable operation of protection fire pump piping system.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art, and provides a novel water suction pipe with a vortex prevention function, which is small in height, can prevent the generation of an external vortex flow (the vortex flow in a northern hemisphere region is in an anticlockwise direction, and the vortex flow in a southern hemisphere region is in a clockwise direction) during water suction, reduces the speed of water flow during the water suction process, and prevents gas from being brought into the water suction pipe by the over-high speed of the water flow during the water suction.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a from novel pipe that absorbs water of taking whirl to prevent, includes the union coupling portion that absorbs water, the union coupling portion that absorbs water pass through the ring flange and be connected with straight tube one end, the straight tube other end and whirl preventer, whirl preventer includes a plurality of water conservancy diversion passageways that communicate with the straight tube, the whirl direction of each water conservancy diversion passageway is opposite with the whirl direction of outside swirl flow.
The cyclone preventer comprises a ring plate and a cover plate which are arranged in parallel, wherein an inner ring opening of the ring plate is connected with a straight pipe, a space between the ring plate and the cover plate is a water inlet cavity, the ring plate and the cover plate are connected through a plurality of built-in parting beads, the water inlet cavity is divided into a plurality of flow guide channels by the built-in parting beads, one end of each flow guide channel is communicated with the circumferential outside of the water inlet cavity, and the other end of each flow guide channel is communicated with the straight pipe.
The inner ring opening of the ring plate is in arc transition connection with the straight pipe.
The outer wall of the annular plate takes the axis of the straight pipe as the central line, a plurality of external parting strips are arranged, and the rotational flow direction of each external parting strip is opposite to the rotational flow direction of the external rotational flow.
The outer wall of the cover plate takes the axis of the straight pipe as the central line, a plurality of external parting strips are arranged, and the rotational flow direction of each external parting strip is opposite to the rotational flow direction of the external rotational flow.
The built-in division bars as described above are in the form of turbine blades.
The outboard division bars as described above are turbine blade shaped.
Compared with the prior art, the utility model has the following advantages:
1. the upper outlet type of the utility model can be arranged on the water suction pipes of fire pump pools in various places, thus reducing the minimum effective water level of the fire pump pool, reducing the ineffective volume, improving the water suction hydraulic condition and improving the water suction efficiency and safety.
2. The lower outlet type of the utility model can be arranged on a water suction pipe (water outlet pipe) of the high-level fire water tank, so that the minimum effective water level of the high-level fire water tank is reduced, the ineffective volume is reduced, the water suction hydraulic condition is improved, and the water suction efficiency and safety are improved.
3. When the connecting part of the water suction pipe is of a large caliber, the connecting part of the water suction pipe and the straight pipe can be connected through the flange plate, and when the connecting part of the water suction pipe is of a small caliber, the connecting part of the water suction pipe and the straight pipe can be connected through threads.
4. The utility model can also increase the number of the built-in parting strips, encrypt the diversion channel, can prevent the coarse sundries from entering the water suction pipe, further improve the hydraulic condition, improve the rectification working condition, and protect the water pump and the pipe network from being blocked by the sundries.
5. The device is made of stainless steel, has simple and novel structure, easy processing and assembly, low cost and long service life, and does not need to be overhauled and maintained after installation.
Drawings
FIG. 1 is a schematic diagram of the upper outlet type of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic view showing the distribution of the built-in parting strips in the water inlet cavity;
fig. 4 is a schematic view of the swirling direction (counterclockwise direction) of the guide passage 5 of the southern hemisphere and the swirling direction (clockwise direction) of the outer swirling flow;
fig. 5 is a schematic view of the structure of a lower outlet type of the present invention.
In the figure: 1-a suction pipe connection; 2-a flange plate; 3, straight pipe; 4-a whirl preventer; 5-a flow guide channel; 6-ring plate; 7-a cover plate; 8-a water inlet cavity; 9-arranging a division bar inside; 10-external parting beads; 11-bolt-nut connections; 12-the direction of the swirling flow of the flow-guiding channel; 13-swirl direction of the swirling flow.
Detailed Description
The present invention will be described in further detail with reference to examples for the purpose of facilitating understanding and practice of the utility model by those of ordinary skill in the art, and it is to be understood that the present invention has been described in the illustrative embodiments and is not to be construed as limited thereto.
The utility model provides a from novel pipe that absorbs water of taking whirl to prevent, includes the union coupling portion 1 that absorbs water, the union coupling portion 1 that absorbs water be connected with 3 one ends of straight tube through ring flange 2, the 3 other ends of straight tube and whirl preventer 4, whirl preventer 4 includes a plurality of water conservancy diversion passageways 5 that communicate with straight tube 3, the whirl direction of each water conservancy diversion passageway 5 is opposite with the whirl direction of outside swirl flow.
The straight pipe 3 is arranged above the rotational flow preventer 4, and forms an upper outlet type, and the utility model can be arranged on the water suction pipes of fire pump pools in various places. The outer wall of the annular plate 6 takes the axis of the straight pipe 3 as a central line, a plurality of external parting strips 10 are arranged, and the rotational flow direction of each external parting strip 10 is opposite to the rotational flow direction of the external rotational flow.
The swirling flow direction of the swirling flow in the northern hemisphere area is anticlockwise, the swirling flow direction of the flow guide channel 5 is clockwise, and the swirling flow direction distributed by the external parting strips 10 is clockwise.
The swirling direction of the swirling flow in the southern hemisphere region is clockwise (as shown in fig. 4), the swirling direction of the flow guide channel 5 is counterclockwise, and the swirling direction of the external division bars 10 is counterclockwise.
Through the arrangement, the water flow of the eddy flow does not enter the diversion channel 5 in a hedging manner, but enters the diversion channel 5 in a buffering manner, so that the flow speed of the water flow of the eddy flow is reduced.
The utility model can be arranged on a water suction pipe (water outlet pipe) of a high-level fire water tank, the outer wall of a cover plate 7 takes the axis of the straight pipe 3 as the central line, a plurality of external parting beads 10 are arranged, and the distribution rotational flow direction of each external parting bead 10 is opposite to the rotational flow direction of an external rotational flow.
When the water suction pipe is of a large caliber, the water suction pipe connecting part 1 and the straight pipe 3 can be connected through the flange plate, and when the water suction pipe is of a small caliber, the water suction pipe connecting part 1 and the straight pipe 3 can be connected through threads.
The swirl preventer 4 comprises a ring plate 6 and a cover plate 7 which are arranged in parallel, an inner ring opening of the ring plate 6 is connected with the straight pipe 3, a space between the ring plate 6 and the cover plate 7 is a water inlet cavity 8, the ring plate 6 and the cover plate 7 are connected through a plurality of built-in parting beads 9, the water inlet cavity 8 is divided into a plurality of flow guide channels 5 by the built-in parting beads 9, one ends of the flow guide channels 5 are communicated with the circumferential outside of the water inlet cavity 8, and the other ends of the flow guide channels are communicated with the straight pipe 3.
The inner ring opening of the ring plate 6 is in arc transition connection with the straight pipe 3. The built-in parting strips 9 are in the shape of turbine blades. The outboard division bars 10 are turbine blade shaped.
Preferably, the inflow water cross-sectional area of the swirl preventer 4 is greater than or equal to 2 times the cross-sectional area of the straight pipe 3, and the inflow water cross-sectional area of the swirl preventer 4 is the product of the distance between the ring plate 6 and the cover plate 7 and the outer ring perimeter of the ring plate 6.
When the pipe diameter DN of the water suction pipe is less than 250, the flow velocity V of water flow in the straight pipe 3 is 1-1.2 m/s; when the pipe diameter DN of the water suction pipe is more than 250, the flow velocity V of water flow in the straight pipe 3 is 1.2-1.6 m/s;
the ratio of the inflow water cross-sectional area of the rotational flow preventer 4 to the cross-sectional area of the straight pipe 3 is adjusted, so that the inflow speed of the rotational flow preventer 4 can be adjusted to be 0.1-0.2 m/s.
When the fire pump water suction pipe absorbs water, or when the high-order fire water tank outlet pipe goes out water, in northern hemisphere area, rivers can form anticlockwise eddy current, if direct from the end of intaking of straight tube 3 inhales, the velocity of flow is great, the eddy current can deepen and increase, at this moment the liquid level probably descends the play water end of straight tube 3, punctures the vacuum state in the water suction pipe, leads to during the air participates in rivers, forms vapour and water and participates in and the mixed flow, has not only reduced discharge, causes fire pump cavitation, still can damage fire pump impeller.
8 are no less than to the quantity of water conservancy diversion passageway 5, and whirl preventer 4 is connected in the end of intaking of straight tube 3 for the velocity of water that will get into straight tube 3 reduces by a wide margin, eliminates the whirl that produces when absorbing water, thereby fire-fighting water pump absorbs water efficiency and the security of supplying water when having guaranteed the fire control, has also effectively reduced the minimum effective water level height in fire-fighting pond (case) simultaneously, has reduced the invalid water volume, has saved the investment.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (7)
1. The utility model provides a from novel pipe that absorbs water of taking whirl to prevent, includes and absorbs water union coupling portion (1), its characterized in that, the union coupling portion that absorbs water (1) pass through ring flange (2) and be connected with straight tube (3) one end, straight tube (3) other end and whirl preventer (4), whirl preventer (4) include a plurality of water conservancy diversion passageways (5) that communicate with straight tube (3), the whirl direction of each water conservancy diversion passageway (5) is opposite with the whirl direction of outside swirl flow.
2. The novel water suction pipe with the function of preventing rotational flow as claimed in claim 1, wherein the rotational flow preventer (4) comprises a ring plate (6) and a cover plate (7) which are arranged in parallel, an inner ring opening of the ring plate (6) is connected with the straight pipe (3), a space between the ring plate (6) and the cover plate (7) is a water inlet cavity (8), the ring plate (6) and the cover plate (7) are connected through a plurality of built-in partition bars (9), the water inlet cavity (8) is divided into a plurality of flow guide channels (5) by the built-in partition bars (9), one end of each flow guide channel (5) is communicated with the circumferential outside of the water inlet cavity (8), and the other end of each flow guide channel is communicated with the straight pipe (3).
3. The novel suction pipe with swirl prevention function as claimed in claim 2, wherein the inner ring mouth of the ring plate (6) is connected with the straight pipe (3) in an arc transition way.
4. The novel water suction pipe with the function of preventing rotational flow is characterized in that the outer wall of the annular plate (6) is provided with a plurality of external parting strips (10) by taking the axis of the straight pipe (3) as the center line, and the rotational flow direction of each external parting strip (10) is opposite to the rotational flow direction of the external rotational flow.
5. The novel water suction pipe with the function of preventing rotational flow as claimed in claim 2, wherein the outer wall of the cover plate (7) is provided with a plurality of external parting strips (10) by taking the axis of the straight pipe (3) as a central line, and the rotational flow direction of each external parting strip (10) is opposite to the rotational flow direction of the external rotational flow.
6. The new suction pipe with swirl prevention as claimed in claim 2, characterized in that the built-in parting strip (9) is in the form of turbine blade.
7. The novel suction pipe with self-swirl prevention function as claimed in any one of claims 4 or 5, wherein the external parting strip (10) is in the shape of a turbine blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121281492.8U CN215609015U (en) | 2021-06-08 | 2021-06-08 | Novel water suction pipe with cyclone prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121281492.8U CN215609015U (en) | 2021-06-08 | 2021-06-08 | Novel water suction pipe with cyclone prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215609015U true CN215609015U (en) | 2022-01-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121281492.8U Active CN215609015U (en) | 2021-06-08 | 2021-06-08 | Novel water suction pipe with cyclone prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215609015U (en) |
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2021
- 2021-06-08 CN CN202121281492.8U patent/CN215609015U/en active Active
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