CN114405949A

CN114405949A - Water intaking pump station

Info

Publication number: CN114405949A
Application number: CN202111657831.2A
Authority: CN
Inventors: 陈樟茂; 杜虹义; 李镇; 李献宁; 付银河; 高志林; 吕慰华; 高钰森; 谭增检
Original assignee: Yuehai Panyu Petrochemical Storage And Transportation Development Co ltd
Current assignee: Yuehai Panyu Petrochemical Storage And Transportation Development Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-04-29

Abstract

The invention relates to the technical field of surface water taking structures, in particular to a water taking pump station. This water intaking pump station includes pump pond, first pump and flushing device. The pump pool is provided with a water inlet, a plurality of communicated chambers and a water outlet; the first pump is fixed on the pump pool and is used for pumping water in the pump pool out of the water outlet; the flushing device comprises a flushing pipeline, a plurality of nozzle groups and a second pump, the flushing pipeline is connected with the nozzle groups, the nozzle groups are arranged on the wall of the cavity, and the second pump is used for driving water in the flushing pipeline to be sprayed out of the nozzles. That is, the river is slowed down and is formed silt and pile up because of flowing into the cavity velocity of flow, and the flushing device shape is with accelerating once more to the river, makes silt mix discharge smoothly in rivers again, and this water intaking pump station has realized effectively clearing up the function of silt under the condition of not shutting down, has avoided the dangerous operation of artifical desilting in addition.

Description

Water intaking pump station

Technical Field

The embodiment of the invention relates to the technical field of surface water taking structures, in particular to a water taking pump station.

Background

The LNG receiving station generally uses river water or seawater as a heat source to heat LNG at a temperature of-162 ℃ to gasify the LNG into gaseous natural gas. The stable supply of river water is a necessary guarantee for the safe and stable output of the receiving station. The water taking pump station firstly pumps water in rivers or seas out by pipelines and then sends the water to the liquefied natural gas receiving station. Because the water velocity of water intaking pipeline is fast, the velocity of flow in the pump station reduces, and the silt that the aquatic was carried deposits at the water intaking pump station, and then influences the normal work of water intaking pump station.

At present, the water intaking pump station generally adopts the mode of shutting down the desilting to handle silt siltation problem, but this mode needs the operation of shutting down, influences equipment efficiency. In addition, personnel and equipment need to go down to the narrow bottom of the pool of about 12 meters deep to carry out desilting operation, and is with high costs, the construction degree of difficulty is big, the potential safety hazard is many.

Disclosure of Invention

The purpose of the invention is: the utility model provides a function that water intaking pump station can effectively clear up silt under the condition of not shutting down is realized to the water intaking pump station.

This water intaking pump station includes pump pond, first pump and flushing device. The pump pool is provided with a water inlet, a plurality of communicated chambers and a water outlet; the first pump is fixed on the pump pool and is used for pumping water in the pump pool out of the water outlet; flushing arrangement includes flushing conduit, a plurality of shower nozzle group and second pump, flushing conduit and shower nozzle group link, the shower nozzle group sets up in the wall portion of cavity, the second pump is used for the drive water in the flushing conduit is from the shower nozzle blowout.

Optionally, the nozzle group includes a plurality of nozzles, the nozzles are disposed at the bottom wall edge of the chamber at intervals, and the nozzles are disposed in a direction away from the sidewall of the chamber.

Optionally, the pump pool is provided with a first chamber, and a first valve is arranged between the first chamber and the water inlet.

Optionally, the first chamber is provided with a baffle assembly, and the baffle assembly is arranged at a certain angle to the water flow direction.

Optionally, the baffle assembly includes a first baffle and a second baffle, the first baffle is close to the water inlet, the second baffle is far away from the water inlet, and the height of the second baffle is greater than the height of the first baffle.

Optionally, the pump pool is further provided with a second chamber, and a second valve is arranged between the second chamber and the first chamber.

Optionally, the second chamber is provided with a grid, the top end of the grid is connected to the top wall of the second chamber, and the bottom end of the grid is connected to the bottom wall of the second chamber; or the top of the second chamber is provided with an opening, the top end of the grid is connected to the side wall of the opening, and the bottom end of the grid is connected to the bottom wall of the second chamber.

Optionally, the grid is disposed obliquely and the bottom end of the grid is close to the first chamber.

Optionally, the pump pool is further provided with a third chamber, and a filter screen is arranged between the third chamber and the second chamber; the cross sectional area of the third chamber along the water flow direction is gradually increased; the filter screen and the wall body of the pump pool are rotatably connected.

Optionally, the pump pool is further provided with a fourth chamber, a partition plate is arranged between the fourth chamber and the third chamber, and a notch communicating the fourth chamber with the third chamber is formed in the bottom of the partition plate; the first pump is installed above the fourth chamber and is used for pumping water in the fourth chamber out of the water outlet.

Compared with the prior art, the water intake pump station provided by the embodiment of the invention has the following beneficial effects:

this water intaking pump station includes pump pond, first pump and flushing device. The pump pool is provided with a water inlet, a plurality of communicated chambers and a water outlet; the first pump is fixed on the pump pool and is used for pumping water in the pump pool out of the water outlet; the flushing device comprises a flushing pipeline, a plurality of nozzle groups and a second pump, the flushing pipeline is connected with the nozzle groups, the nozzle groups are arranged on the wall of the cavity, and the second pump is used for driving water in the flushing pipeline to be sprayed out of the nozzles.

River water flows in from the water inlet, flows into the plurality of chambers, and flows out from the water outlet under the action of the first pump. The river water also carries a large amount of silt, which settles in the chamber. At this moment, can open the flushing arrangement in step, the shower nozzle group is washd the cavity diapire, and silt mixes in the aquatic, and the effect of first pump is passed through again, is discharged from the delivery port. The frequency and the washing time length of the washing equipment can be properly adjusted according to the specific condition of the sludge. That is, the river water is slowed down because of the flowing speed of the river water flowing into the chamber to form sediment accumulation, and the washing equipment is used for accelerating the river water again, so that the sediment is mixed in the water flow and is discharged smoothly. To sum up, this water intaking pump station has realized effectively clearing up the function of silt under the condition of not shutting down, has avoided the dangerous operation of artifical desilting in addition.

Drawings

FIG. 1 is a schematic longitudinal cross-sectional view of a water intake pumping station according to an embodiment of the present invention.

FIG. 2 is a schematic transverse cross-sectional view of a water intake pumping station.

In the figure, 100, pump pool; 101. a water inlet; 102. a water outlet; 110. a chamber; 111. a first chamber; 112. a second chamber; 113. a third chamber; 114. a fourth chamber; 115. an opening; 116. a notch; 120. a first valve; 130. a baffle assembly; 131. a first baffle plate; 132. a second baffle; 140. a second valve; 150. a grid; 160. a filter screen; 170. a partition plate;

200. a first pump;

300. flushing the equipment; 310. a nozzle group; 311. one group of spray heads; 312. and two groups of spray heads.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples.

Referring to fig. 1 and 2, a schematic longitudinal cross-sectional view and a schematic transverse cross-sectional view of a water intake pumping station including a sump 100, a first pump 200 (not shown), and a flushing apparatus 300 are shown, respectively. The pump pool 100 is used for guiding river water to flow in, store water and discharge water, and plays a certain role in filtering; the first pump 200 is used for providing power for water taking or water discharging; the flushing device 300 is used for dredging the pump sump 100. The various components of the water intake pumping station will be described in detail below.

With reference to fig. 1, and fig. 2, the pump tank 100 is provided with a water inlet 101, a plurality of chambers 110 and a water outlet 102. The water inlet 101 can be externally connected with a water inlet pipe, in the specific embodiment, the water inlet 101 is lower than the horizontal plane, so that river water or seawater can flow in by depending on self gravity, and the flow speed difference between the outside of the water inlet 101 and the inside of the water inlet 101 is facilitated. With respect to the plurality of chambers 110, adjacent chambers 110 communicate with each other to form a water flow passage. In addition. The chamber 110 may also be used for temporary water storage. Since the chamber 110 is mostly matched with the flushing device 300, for the sake of clarity and convenience, the first pump 200 and the flushing device 300 will be described first, and the chamber 110 will be described in detail later.

Regarding the first pump 200, it is fixed to the sump 100 and is used to draw the water in the sump 100 out of the water outlet 102. Referring specifically to fig. 1 and 2, in this embodiment, the pump station is provided with a plurality of water flow passages, and a first pump 200 is provided at the end of each water flow passage. The first pump 200 raises the water in the sump 100 to the level of the outlet 102, or the first pump 200 is provided with a pipe to lead out the water. In this embodiment, each water outlet 102 is provided with two intersecting pipes, the two pipes are communicated with each other, a bidirectional force transmission joint is arranged between the two pipes, and a hydraulic check butterfly valve is arranged to control the flow area of the pipes.

With respect to the flushing device 300, please continue to refer to fig. 1 and 2, the flushing device 300 includes a flushing pipe (not shown), a number of nozzle groups 310, and a second pump (not shown). Specifically, the flushing pipe is connected to a nozzle group 310, the nozzle group 310 is disposed on a wall of the chamber 110, and the second pump is used to drive water in the flushing pipe to be sprayed out from the nozzle. The flushing pipeline can take water from a reservoir or a river. In order to make the nozzle set 310 perform the erosion and deposition function better, the nozzle set 310 is disposed on the bottom wall of the chamber 110, and the nozzle set 310 includes a plurality of nozzles, and the nozzles are spaced apart from the edge of the bottom wall of the chamber 110. Preferably, the jets are equally spaced. In addition, the showerhead is disposed in a direction away from the sidewall of the chamber 110.

Specifically, the nozzle groups 310 are arranged in two ways. First, the head group 310 includes a head group 311 and a head group 312 disposed opposite to the head group 311. The first group 311 and the second group 312 of nozzles include a plurality of nozzles, and the nozzles of the first group 311 and the second group 312 of nozzles are arranged at intervals along the water flow direction. Secondly, the nozzle groups 310 are arranged around the edge of the bottom wall of the chamber 110 to avoid corresponding inlet and outlet positions, and a plurality of nozzle openings only face the center position of the bottom wall of the chamber 110.

More specifically, the head of the nozzle is flat and has a slotted opening 115, and the internal cavity is fan-shaped. Specifically, the opening directions of the nozzles corresponding to the nozzle group 311 and the nozzle group 312 are opposite, so that a better erosion and deposition effect is achieved. More specifically, the specific embodiment uses the nozzle outlet 102 with a diameter of 2.5 × 40mm, 3 × 68mm, etc.

With respect to the chamber 110, the pump sump 100 is provided with a first chamber 111, a second chamber 112, a third chamber 113, and a fourth chamber 114 in order along the water flow passage direction. The first chamber 111, the second chamber 112 and the third chamber 113 are provided with the nozzle groups 310, the nozzle group 310 of the first chamber 111 adopts the second arrangement, and the nozzle group 310 of the second chamber 112 and the third chamber 113 adopts the first arrangement. The four chambers 110 will be described separately below.

First, the first chamber 111 has a flow blocking function in addition to the erosion and deposition function. The first chamber 111 is provided with a baffle assembly 130, and the baffle assembly 130 is used for blocking water flow with variable flow rate, so that the flow rate of the water flow is stable, and the impact of the water flow on internal equipment of the water taking pump station is delayed. More specifically, the baffle assembly 130 is disposed at an angle to the direction of the water flow to act as a baffle. More specifically, the baffle assembly 130 includes a first baffle 131 and a second baffle 132, the first baffle 131 is disposed near the water inlet 101, the second baffle 132 is disposed far from the water inlet 101, and the height of the second baffle 132 is greater than the height of the first baffle 131. If the water flow is higher than the first baffle 131, the baffles also play a role of buffering. In addition, a first valve 120 is disposed between the first chamber 111 and the water inlet 101.

With respect to the second chamber 112, a second valve 140 is provided intermediate the second chamber 112 and the first chamber 111. The second valve 140 can further control the flow rate of water according to the size of the opening and closing gate. Inside the second chamber 112, a grill 150 is provided, a top end of the grill 150 is connected to a top wall of the second chamber 112, and a bottom end of the grill 150 is connected to a bottom wall of the second chamber 112. Alternatively, the second chamber 112 has an opening 115 at the top, the top of the grill 150 is connected to the sidewall of the opening 115, and the bottom of the grill 150 is connected to the bottom wall of the second chamber 112. The opening 115 is available for an operator to climb into. The grill 150 functions to block large debris and effectively trap the debris in the second chamber 112. In order to increase the intercepting area, the grill 150 is disposed obliquely and the bottom end of the grill 150 is close to the first chamber 111. More specifically, the grill 150 may be removably coupled to the second chamber 112, and the grill 150 may be pulled out of the opening 115, cleaned of dirt on the grill 150, and then replaced. Alternatively, it is cleaned with other equipment.

With respect to the third chamber 113, it is adjacent to the second chamber 112. To prevent the grill 150 from being blocked, a filter screen 160 is disposed between the second chamber 112 and the third chamber 113. In order to allow the filtering net 160 to have a filtering function while carrying a lot of garbage, the filtering net 160 is rotatably connected to the wall of the pump pool 100 and can rotate under the impact of water flow. In addition, the cross-sectional area of the third chamber 113 along the flow direction of the water flow is gradually increased, so that the water flow at the inlet of the third chamber 113 has the fastest flow speed and is not easy to silt up, and the rear end of the third chamber 113 is provided with the nozzle group 310 to accelerate the water flow and make the water flow take away the sludge.

The pump pool 100 is further provided with a fourth chamber 114, a partition plate 170 is arranged between the fourth chamber 114 and the third chamber 113, a notch 116 communicating the fourth chamber 114 with the third chamber 113 is formed in the bottom of the partition plate 170, and the partition plate 170 has the function of stabilizing water flow. In addition, the first pump 200 is installed above the fourth chamber 114 and serves to pump the water of the fourth chamber 114 out of the water outlet 102.

The working process of the water intake pump pool 100 is as follows: river water flows in from the water inlet 101, flows into the plurality of chambers 110, and flows out from the water outlet 102 under the action of the first pump 200. The river water also carries a large amount of silt which settles in the chamber 110. At this time, the flushing device 300 can be synchronously opened, the nozzle group 310 flushes the bottom wall of the chamber 110, and silt is mixed in the water and then discharged from the water outlet 102 through the action of the first pump 200. The frequency and the duration of the washing can be adjusted by the washing apparatus 300 according to the specific condition of the sludge. That is, the river water is gradually discharged into the chamber 110 to accumulate silt, and the washing apparatus 300 accelerates the river water again to mix the silt in the water flow and discharge the silt smoothly.

In summary, the embodiment of the invention provides a water intake pump station, which can realize dredging of equipment in a non-stop state, and can reduce the influence of sediment deposition on the safety of a water intake system by replacing a traditional stop manual machine with an automatic sediment flushing system. Meanwhile, the problem that operating personnel carry out dredging operation in a narrow pump pool and a narrow flow channel is solved, the problem of harsh operating conditions is solved, and potential safety hazards caused by dredging of manual machines under the pump pool with the depth of more than 12 meters are avoided.

It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, it will be apparent to those skilled in the art that modifications and variations can be made in the light of the above teachings, and all such modifications and variations are intended to be within the scope of the present invention.

Claims

1. The utility model provides a water intaking pump station which characterized in that includes:

the pump pool is provided with a water inlet, a plurality of communicated chambers and a water outlet;

the first pump is fixed on a pump pool and used for pumping water in the pump pool out of the water outlet; and

flushing arrangement, it includes flushing conduit, a plurality of shower nozzle group and second pump, flushing conduit and shower nozzle group link, the shower nozzle group set up in the wall portion of cavity, the second pump is used for the drive water in the flushing conduit is from the shower nozzle blowout.

2. The water intake pump station according to claim 1, wherein the spray head group comprises a plurality of spray heads, the spray heads are arranged at intervals on the edge of the bottom wall of the chamber, and the spray heads are arranged in a direction away from the side wall of the chamber.

3. The water intake pump station according to claim 1, wherein the pump pool is provided with a first chamber, and a first valve is provided between the first chamber and the water inlet.

4. The water intake pump station according to claim 3, wherein the first chamber is provided with a baffle assembly disposed at an angle to the direction of water flow.

5. The water intake pump station of claim 4, wherein the baffle assembly includes a first baffle disposed proximate the water inlet and a second baffle disposed distal the water inlet, the second baffle having a height greater than the height of the first baffle.

6. The water intake pump station according to claim 3, wherein the pump pool is further provided with a second chamber, and a second valve is provided between the second chamber and the first chamber.

7. The water intake pump station according to claim 6, wherein the second chamber is provided with a grating, the top end of the grating is connected to the top wall of the second chamber, and the bottom end of the grating is connected to the bottom wall of the second chamber;

or the top of the second chamber is provided with an opening, the top end of the grid is connected to the side wall of the opening, and the bottom end of the grid is connected to the bottom wall of the second chamber.

8. The water intake pumping station of claim 7, wherein the grate is inclined and a bottom end of the grate is adjacent to the first chamber.

9. The water intake pump station according to claim 6, wherein the pump pool is further provided with a third chamber, and a filter screen is arranged between the third chamber and the second chamber;

the cross sectional area of the third chamber along the water flow direction is gradually increased;

the filter screen and the wall body of the pump pool are rotatably connected.

10. The water intake pump station according to claim 9, wherein the pump pool is further provided with a fourth chamber, a partition plate is arranged between the fourth chamber and the third chamber, and a notch communicating the fourth chamber and the third chamber is arranged at the bottom of the partition plate;

the first pump is installed above the fourth chamber and is used for pumping water in the fourth chamber out of the water outlet.