CN213625426U

CN213625426U - Vortex removing device

Info

Publication number: CN213625426U
Application number: CN202022051380.5U
Authority: CN
Inventors: 王贤淼; 孙清华; 何伟生; 桂林松; 顾海华
Original assignee: Schlee Nanjing Refrigeration Machinery Manufacturing Co ltd
Current assignee: Schlee Nanjing Refrigeration Machinery Manufacturing Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-07-06
Anticipated expiration: 2030-09-18

Abstract

The utility model discloses a remove whirlpool device, include with the pipeline mouth match remove the whirlpool body, set up in remove the buffer gear that the whirlpool body back is used for buffering rivers and be used for adjusting remove the adjustment mechanism of whirlpool body and pipeline mouth distance. Install this vortex removal device at the pipeline mouth, can slow down or even eliminate the suction pipe mouth vortex, adjust the water level, reduce suction pipe mouth rivers vortex and to water pump, drainage pond or even drain pipe dam body injury, reduce the calamity.

Description

Vortex removing device

Technical Field

The utility model relates to a remove equipment for whirlpool, in particular to remove whirlpool device.

Background

Strong vortices are quite harmful, severely reducing the inflow, causing unit or structural vibrations, reducing unit efficiency, entraining floats and blocking or damaging trash racks, etc., and have the following major disadvantages: (1) reducing the drainage capacity: the overflow section is reduced due to the existence of the gas core, so that the overflow capacity is reduced, in addition, the tangential movement water flow is existed, so that the head loss is increased, and the leakage capacity is reduced as a result of the combined action; (2) forming air bags to influence the stability of water flow in the holes: due to the existence of the air bag, the air bag is crushed at the hole opening, so that pressure flow and non-pressure flow alternately appear, and the water flow and outflow in the hole are in an extremely unstable burst state; (3) increasing pulsating pressure of the tunnel body: data show that the pulsating pressure of the same measuring point at the same flow rate can be increased by more than 2 times when vortex exists, and the damage of water flow to the lining material of the tunnel body cannot be ignored when vortex exists; (4) absorbing floating objects on the water surface: the floating objects on the water surface can be sucked into the hole, so that the hole is blocked or the trash rack is damaged, and even the personnel are threatened; (5) cause water pump cavitation, damage the pump body: the vortex sucks air through the vortex pipe, and cavitation erosion of the water pump blade and the pump body is caused.

The reason why the vortex generates the suction phenomenon is as follows: the radius of the central part (with vortex flow) of the vortex is r⁰The side flow velocity is u⁰The pressure variation of the central part of the vortex is distributed according to a parabolic rule, and the pressure decreases along with the decrease of the centripetal surface, thereby showing the property that the vortex sucks an object and the phenomenon that the water surface at the vortex is in a funnel shape and decreases. The swirl being large, i.e. u⁰Greater pressure at the center point of the vortex

Smaller, when small below atmospheric pressure, the vortex will create a suction phenomenon.

The vortices of the water inlet are divided into two types, namely a vertical shaft vortex and a horizontal shaft vortex, the vertical shaft vortex is easy to cause air intake, and the influence factors of vortex motion mainly comprise the velocity circulation of near water flow, the submerged depth of the water inlet, the flow (or flow velocity) of the water inlet and boundary conditions.

In the prior art, the vortex removal method mainly comprises a floating body vortex reduction method and a vortex beam prevention method. The floating body vortex reducing method is to set floating plate, beam, grid and other floating bodies on the water surface to avoid vortex. The floating objects can be regarded as rigid bodies, which is equivalent to increasing the surface tension of water flow to infinity to block the generation of vortexes; meanwhile, when the water flow with the vortex induced flow velocity reaches the rigid body, the rigid body can also destroy the velocity circulation. The floating body needs to be provided with a special mechanism, and the method cannot be used in the places with fast flow rate or driftwood in the flood period and in the severe freezing in winter. The vortex beam preventing method aims at blocking the flow center of the vortex, preventing the vortex from developing, dispersing the flow velocity distribution, reducing the velocity gradient and reducing the condition of generating the vortex. The vortex does not stay in one place but slowly rotates within a certain range. If a grid with a suitable gap is provided in the range where the vortex flow center passes, the flow center is naturally cut by the grid, and the vortex cannot develop. This method of preventing eddies by using the vortex properties and placing several grid beams above the water inlet is suitable for water inlets with large water depths. The vortex beam is typically positioned near the lowest water level or at the top of the inlet. If the beam spacing is proper and the beam spacing is too narrow, the vortex will be transferred to the front of the vortex-preventing beam, and the grid beam cannot cut off the flow center, thus the vortex-preventing effect is not achieved. If the distance between the grid beams is too wide, the flow center stays in the middle of the grid beams and is not broken, and the vortex cannot be prevented.

Reference documents: the authors Huangxian honor the measures of import vortex and preventing and reducing vortex.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to solve the injury of rivers vortex to water pump, drainage pond drain pipe dam body even, the utility model provides a remove whirlpool device.

The technical scheme is as follows: a remove whirlpool device, include with the pipeline mouth match remove the whirlpool body, set up in remove the buffer gear that the whirlpool body back is used for buffering rivers and be used for adjusting remove the adjustment mechanism of whirlpool body and pipeline mouth distance.

The utility model discloses an optimal structure does: the buffer mechanism is a plurality of buffer plates arranged on the back of the vortex removing body.

The utility model discloses an optimal structure does: comprises a locking mechanism used for locking the buffer mechanism.

The utility model discloses an optimal structure does: comprising a control system for controlling the adjustment mechanism and the locking mechanism.

The utility model discloses an optimal structure does: the adjusting mechanism comprises a first adjusting rod connected with the vortex removing body, a first fixing mechanism used for fixing the first adjusting rod, a first transmission gear fixedly connected with the first adjusting rod and a first motor used for controlling the first adjusting rod to ascend and descend, and the first motor drives the first transmission gear to rotate.

The utility model discloses an optimal structure does: the buffering mechanism is a cross-shaped buffering plate which is fixed on the back of the vortex removing body and is perpendicular to the vortex removing body.

The utility model discloses an optimal structure does: the locking mechanism comprises a plurality of locking units which are abutted against the side edges of the buffer plate.

The utility model discloses an optimal structure does: the locking unit comprises a first locking rod, a second transmission gear fixed on the first locking rod and a second motor driving the second transmission gear to rotate.

The utility model discloses an optimal structure does: the locking mechanism includes a support plate for fixing the locking unit.

The utility model discloses an optimal structure does: the control system comprises a flow rate detection mechanism for detecting the water flow speed and a controller for controlling the first motor and the second motor.

Has the advantages that: (1) the utility model is provided with a vortex removing device which can slow down or even eliminate the vortex (comprising a vertical shaft vortex and a horizontal shaft vortex) at the water suction pipe orifice through the combined action of the vortex removing body and the buffer mechanism; (2) the vortex removing device of the utility model can also adjust the distance between the vortex removing body and the pipeline according to the speed of water flow, and is used for adjusting the water level and reducing the water flow vortex at the pipe orifice of the pipeline; (3) the utility model further fixes the buffer mechanism through the locking mechanism, thereby avoiding the influence on the stability of the vortex removing device due to the impact of water flow; (4) the utility model discloses reduced the vortex to water pump, drainage pond and drain pipe dam body injury even, reducible social and property loss reduces the calamity even.

Drawings

Fig. 1 is a schematic structural view of a vortex removal device according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a vortex removing body and a buffer mechanism according to embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a first fixing mechanism according to embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of an adjusting mechanism according to embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a locking mechanism according to embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a positional relationship between the locking mechanism and the buffer structure according to embodiment 1 of the present invention;

fig. 7 is a schematic view of an operating state of the vortex removing device according to embodiment 1 of the present invention.

Detailed Description

The structure of the present invention will be further explained with reference to the accompanying drawings.

Example 1: as shown in fig. 1, what remove whirlpool device, include with the pipeline mouth match remove whirlpool body 1, set up in removing the buffering mechanism 2 that is used for buffering rivers at the whirlpool body 1 back (be close to pipeline mouth one side), be used for adjusting remove whirlpool body 1 and pipeline mouth apart from adjustment mechanism 3, be used for locking the locking mechanism 4 of buffering mechanism 2 and be used for controlling control system 5 of adjustment mechanism 3 and locking mechanism 4.

As shown in fig. 2, the buffer mechanism 2 is provided with a plurality of buffer plates 102 disposed on the back of the vortex-removing body 1, in this embodiment, the buffer mechanism 2 is a cross-shaped buffer plate 101 fixed on the back of the vortex-removing body 1 and perpendicular to the vortex-removing body 1, specifically, the vortex-removing body 1 includes a vortex-removing plate 101 matched with the pipeline port, the vortex-removing plate 101 is a circular steel plate larger than the pipeline port, and the vortex-removing principle of the vortex-removing plate 101 is a floating body vortex-reducing method, which simulates a floating body larger than the vortex to eliminate the vortex. Buffer board 102 is "ten" style of calligraphy structure steel sheet, and for removing the vertical direction setting of vortex board 101, it is provided with the recess that is used for buffer board 102 location on removing the vortex board 101, and buffer board 102's center pin is located the central point that removes vortex board 101 and puts, and buffer gear's the vortex principle that removes is vortex beam method, through disturbing the rivers direction, prevents to produce the heliciform vortex.

As shown in fig. 3, adjust structure 3 include with remove the vortex body 1 and be connected first regulation pole 301, be used for fixed first fixed establishment 302 of adjusting pole 301, be used for controlling first regulation pole 301 go up and down with first drive gear 303 that first regulation pole 301 is connected and drive first drive gear 303 pivoted first motor 304, there is the internal thread of being connected with first regulation pole 301 transmission gear 303 inboard.

In this embodiment, the first adjusting lever 301 is a bolt or a lead screw, in this embodiment, the first adjusting lever 301 is selected to be a bolt, the surface of the first adjusting lever is provided with an external thread, one end of the first adjusting lever 301 is fixedly connected with the vortex shedding plate 101 and is fixed by a nut, the first adjusting lever 301 is fixed by a first fixing mechanism 302, the first fixing mechanism 302 includes a first fixing plate 3021 and a fixing frame 3022 fixed on the first fixing plate 3021, the middle of the first fixing plate 3021 is provided with an aperture larger than the vortex shedding plate 101, the fixing frame 3022 is a frame-shaped structure with an opening at the lower end (the diameter of the opening is larger than the diameter of the vortex shedding plate 101), the bottom end of the opening of the fixing frame 3022 is respectively provided with two fixing legs 3023 for fixing with the first fixing plate 3021, the two side plates 3024 of the fixing frame 3022 are arranged perpendicular to the first fixing plate 3021, the extending direction is the same as the extending direction of the, a through hole 3026 for fixing the first adjusting rod 301 is formed in the middle of the transverse plate, and inner threads matched with the outer threads of the first adjusting rod 301 are formed in the inner wall of the through hole 3026.

As shown in fig. 4, the first transmission gear 303 is sleeved on a bolt serving as the first adjusting lever 301, an inner wall of the first transmission gear 303 connected with the bolt is provided with an internal thread matched with an external thread on a surface of the bolt, the first transmission gear 303 is in transmission connection with the first motor 304, a bottom end of the first transmission gear 303 is fixed above the horizontal plate 3025 through a bearing 305, similarly, the bearing 305 limits the adjusting displacement of the adjusting structure 3, and the first transmission gear 303 moves between the bearing 305 and a top end of the first adjusting lever 301.

The first motor 304 is a stepping motor, the stepping motor is connected with the first screw 306, the stepping motor drives the first transmission gear 303 in transmission connection with the first screw 306 to transmit through forward and reverse rotation, and the first adjusting rod 301 drives the vortex removing plate 101 to move up and down.

As shown in fig. 5 and 6, the locking mechanism 4 of the vortex removing device includes a plurality of locking units 40 abutting against the side of the buffer plate, in this embodiment, since the buffer mechanism is a cross-shaped plate having four sides, four locking units 40 are correspondingly disposed, the locking units 40 are fixed on the support plate 404, and similarly, the support plate 404 is provided with an opening larger than the diameter of the pipeline.

The locking unit 40 includes a first locking lever 401, a second transmission gear 402 fixed to the first locking lever 401, and a second motor 403 for rotating the second transmission gear 402.

Specifically, the second motor 403 is a stepping motor, an output end of the stepping motor and the second lead screw 405 drive the second transmission gear 402 to rotate, and the second gear 402 drives the first locking rod 401 to rotate, and similarly, the first locking rod 401 is a bolt or a lead screw, in this embodiment, the first locking rod 401 is a bolt, and similarly, the surface of the first locking rod is provided with an external thread, and the inner wall of the second transmission gear 402 is provided with an internal thread matching with the external thread of the first locking rod 401.

The second motor 403 is installed on the supporting plate 404, before the adjusting mechanism 3 for adjusting the vortex removing plate 101 acts, the stepping motor in the locking mechanism 4 drives the second screw rod 405 to rotate reversely, the second transmission gear 402 in transmission connection with the second screw rod 405 is driven to rotate, under the driving of the second transmission gear 402, the first locking rod 401 and the cross-shaped buffer plate are unlocked, the adjusting mechanism 3 for adjusting the vortex removing plate 101 adjusts the position of the vortex removing plate 101, after the adjusting mechanism 3 stops acting, the stepping motor of the locking mechanism 4 rotates forwardly, the second transmission gear 402 in transmission connection with the second screw rod 405 is driven to rotate, and then the first locking rod 401 is enabled to lock the buffer plate of the vortex removing plate 101.

In this embodiment, the vortex removing apparatus further includes a control system 5, the control system 5 includes a flow rate detection mechanism for detecting a flow rate of water (the flow rate detection mechanism may be any device capable of detecting a flow rate of a pipeline port in the prior art, such as a flow rate detector, for example, a doppler ultrasonic flowmeter with a model of DX-LSX-1, and the set position may be located at an outlet of the pipeline or any position capable of detecting a flow rate of a pipeline port, so that the flow rate detection mechanism is not shown in the figure), and a controller for controlling the first motor 104 and the second motor 403, specifically, the first motor 104 is provided with a first controller 501, the second motor 403 is provided with a second controller 502, the first controller 501 is used for controlling the first lead screw 306 of the adjustment mechanism 3 to move up and down, and the second controller 502 is used for controlling the second lead screw 405 to move horizontally.

Specifically, the first controller 501 and the second controller 502 may be stepper motor controllers of model SR40 PLC. The flow rate detection mechanism in this embodiment selects a DX-LSX-1 doppler ultrasonic flowmeter suitable for flow rate measurement of open channels, river channels, and difficult-to-construct standard cross sections, and flow rate measurement of various full-pipe and non-full-pipe open channels.

The utility model discloses a two kinds of whirlpool methods that remove combine together, can overcome the velocity of flow fast, the too wide scheduling problem of grid roof beam interval can not prevent the problem of vortex, the utility model discloses an operating method does:

as shown in fig. 7, the control system 5 controls the lifting height of the vortex removing body 1 by the adjusting mechanism 3 according to the detected flow rate of the water pipe, so as to control the water flow rate and the flow rate and eliminate the vortex at the same time.

When the flow speed detection mechanism detects that the water flow speed is less than the set value of vortex removal and no vortex center exists in the water flow, the second controller 502 controls the locking mechanism 4 to release locking, the adjusting mechanism 3 lifts the vortex removal plate 101 to a specified height through the first lead screw 306, and the second controller 502 controls the locking mechanism 4 to lock the buffer plate.

When the water flow rate exceeds a specified value, the second controller 502 controls the locking mechanism 4 to unlock, the adjusting mechanism 3 descends the vortex removing plate 101 to a specified height through the first screw rod 306, and the second controller 502 controls the locking mechanism 4 to lock the buffer plate.

According to the structure above, the utility model discloses a remove whirlpool device, simple structure can effectively eliminate the vortex, can improve the security of engineering and equipment, protects social property and life safety, is worth promoting.

Claims

1. The vortex removing device is characterized by comprising a vortex removing body (1) matched with a pipeline port, a buffering mechanism (2) arranged on the back of the vortex removing body (1) and used for buffering water flow, and an adjusting mechanism (3) used for adjusting the distance between the vortex removing body (1) and the pipeline port.

2. The deswirler system according to claim 1, wherein the buffer mechanism (2) is a plurality of buffer plates provided on a back surface of the deswirler body (1).

3. Deswirler system according to claim 2, comprising a locking mechanism (4) for locking the damping mechanism (2).

4. Deswirler system according to claim 3, comprising a control system (5) for controlling the adjusting mechanism (3) and the locking mechanism (4).

5. The vortex removing device according to claim 4, wherein the adjusting mechanism (3) comprises a first adjusting rod (301) connected with the vortex removing body (1), a first fixing mechanism (302) for fixing the first adjusting rod (301), a first transmission gear (303) fixedly connected with the first adjusting rod (301) for controlling the first adjusting rod (301) to ascend and descend, and a first motor (304) for driving the first transmission gear (303) to rotate.

6. The deswirler system according to claim 5, wherein the damper mechanism (2) is a cross-shaped damper plate (201) fixed to a back surface of the deswirler body (1) and provided perpendicularly to the deswirler body (1).

7. Deswirler system according to claim 6, wherein the locking mechanism (4) comprises a plurality of locking units (40) abutting against the buffer plate sides.

8. The deswirler system of claim 7, wherein the locking unit (40) comprises a first locking lever (401), a second transmission gear (402) fixed to the first locking lever (401), and a second motor (403) that rotates the second transmission gear (402).

9. The deswirler system of claim 7, wherein the locking mechanism includes a support plate (404) for securing the locking unit.

10. Deswirler system according to claim 7, wherein the control system (5) comprises a flow rate detection mechanism for detecting a water flow rate and a controller for controlling the first motor (304) and the second motor (403).