CN112112136A - Discharge device and operation method of long-distance water transmission and transfer system - Google Patents

Abstract

The invention discloses a stilling discharge device of a long-distance water conveying and transferring system, and relates to the technical field of long-distance pipeline water resource conveying. The water delivery part and the water lifting part are arranged along the terrain, high points and secondary high points, low points and secondary low points are formed in the pipelines of the water delivery part and the water lifting part with large terrain fluctuation in a segmented manner, air supplementing and exhausting devices are arranged on the high points and the secondary high points, and force eliminating and exhausting devices are arranged on the low points and the secondary low points; the invention can effectively solve the problem of air supplement and exhaust of the long-distance water conveying pipeline with complex terrain, can effectively solve the technical problems of accumulated silt discharge and pipeline blockage of the pipeline, effectively protects the pipeline, and improves the working efficiency and the economic benefit of pipeline conveying.

Description

Discharge device and operation method of long-distance water transmission and transfer system

technical field

The invention discloses a force-discharging device and an operation method of a long-distance water transmission and transfer system, and relates to the technical field of long-distance pipeline water resources transportation.

Background technique

The long-distance and large-diameter pipeline transportation business has developed rapidly in China, and has been welcomed by more and more resource owners because of its advantages of energy saving and environmental protection, low loss, balance and stability. The cost of pipeline transportation is lower than that of road transportation, which can meet the requirements of continuous production in modern factories, and the operating life of the pipeline is 30 years, so the economic benefits are considerable.

Pipeline transportation is an energy-saving, emission-reduction and environmental protection project actively promoted by the country. It meets the country's sustainable development requirements and is a project supported by the national industrial policy. The cost of pipeline transportation is significantly lower than that of road transportation. Except for the operating costs of the pipeline transportation system, no other expenses are incurred. The pipeline transportation system implements automatic control of the pipeline transportation system through the monitoring system. An important measure of cost cost, therefore, the present invention has unlimited prospects.

In the water transmission and transfer system, the safety of the pipeline is particularly important. However, due to the suspension of the supplementary time, some pipe sections in the pipeline are blocked by silt. Therefore, the problem of sludge decompression and decompression discharge of pressurized water pipelines is of great significance to the safe use of water pipelines. In order to ensure the safety of the pipeline water delivery system, necessary measures should be taken. Aiming at the above problems, the present invention can effectively solve the problem of replenishing and exhausting long-distance water pipelines in complex terrain, and can effectively solve the problem of pipeline accumulation and discharge and pipeline blockage. The technical difficulties have prompted the safe, stable, efficient and economical operation of the pipeline water transfer system.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, the present invention discloses a power dissipation device and an operation method of a long-distance water transmission and transfer system, aiming at effectively solving the accumulation of sludge, impurities, etc. in the pipeline in a long-distance large-diameter and high-lift water transfer system Blockage, long-distance large-diameter and high-lift water transfer system, complex terrain and large fluctuations, forming many U-shaped pipelines, the safety of the pipeline is particularly important, but due to the non-continuous operation of the system, during the shutdown period, the water Some of the sediment and impurities in the pipeline are easy to accumulate at the lower part of the pipeline and cause pipeline blockage. Most of the pipelines are in the wild and have a large drop. Therefore, how to regularly reduce the pressure and discharge the sediment in the pipeline is of great significance to the safe use of water transfer pipelines. important meaning. In order to ensure the safety of the pipeline water delivery system, necessary measures should be taken. In view of the above problems, the present invention sets and installs supplementary and exhaust devices at the high point and the second highest point in the pipeline of the water transmission and transfer system, and at the low point. The installation and installation of a stilling discharge device at the sub-low point position can effectively solve the problem of supplement and exhaust of long-distance water pipelines in complex terrain, can effectively solve the technical problems of pipeline accumulation and discharge and pipeline blockage, effectively protect the pipeline and improve the pipeline performance. Conveying efficiency and economic benefits.

The technical scheme adopted in the present invention is as follows:

The invention discloses a stilling and discharging device for a long-distance water transmission and transfer system, comprising a water inlet pool, a water outlet pool, a water demand point, a supplementary exhaust device and a stilling device. In the water-lifting part of the system, the outlet of the water outlet is connected to the water-requiring point through pipes to form the water-conveying part of the water-transmission and transfer system. High point and sub-high point, as well as low point and sub-low point are formed in sections in the pipeline of the water part. Supplementary exhaust devices are set up on the high point and sub-high point, and stilling discharge is installed at the low point and sub-low point. device;

Further, the inlet pool of the water lifting part is set at the lowest point at the beginning of the system, the outlet pool is set at the highest point at the middle end of the system, and the inlet pool is connected to the water inlet of the outlet pool through a one-way water supply pipe; The undulations form a U-shaped pipeline, and the U-shaped pipeline has a height difference to form a pipeline low point and a sub-low point, and a discharge damping device is arranged at the lowest point of the U-shaped connection between the low point and the sub-low point;

Further, the water inlet pool is set at the lowest point of the water transmission and transfer system. The height difference between the water inlet pool and the water outlet pool and the water demand point is convenient for one-way water supply. conveying water and lifting water from a low point to a high point, the process forming the potential energy of the water flow in the pipeline;

Further, the water outlet pool of the water delivery part is set at the highest point in the middle end of the system, the water demand point is set at the end of the system, and the water outlet end of the water outlet pool is connected to a one-way water supply to the water demand point; For water supply, the pipeline undulates to form a U-shaped pipeline, and the U-shaped pipeline has a height difference to form a high point and a second high point of the pipeline; between the water outlet and the water demand point, a high point and a second high point, as well as a low point and a second high point are formed. At the low point, the supplemental exhaust device is set at the high point and the second high point, and the stilling discharge device is set at the low point and the second low point;

Further, the outlet pool is set at the highest point in the system as the system transfer point, the front end receives the inlet pool to provide water flow, the rear end supplies water to the water delivery part, and the high point and the second highest point pipeline of the water delivery part form a repeated high point to a low point. The water supply and the low point supply water to the high point, and the water outlet of the outlet pool supplies water downward, so the water supply part needs a supplementary exhaust device to solve the problem of pipeline blockage;

Further, the water transmission and transfer system is located in complex terrain, long distance, field pipelines, and high lift, and is divided into a water-lifting part and a water-conveying part. The low point, high point and sub-high point finally form a U-shaped pipeline. On the U-shaped pipeline, a supplemental exhaust device and a stilling discharge device are arranged; The main pipe is connected to the main pipe by connecting the short pipe. After slowly opening the maintenance ball valve and conical vent valve, the pressure is released into the stilling well through the outlet of the emptying pipe. After the liquid level gradually rises, it flows from the overflow pipe to the drainage channel without pressure, effectively removing the silt accumulated during long outages.

The technical effect of the present invention is as follows:

In view of the above existing problems, the present invention installs supplementary and exhaust devices at the high points and sub-high points in the pipeline of the water transmission and transfer system, and installs a damping and discharge device at the low points and sub-low points, which can effectively solve the complex terrain length. The problem of supplementary and exhaust from the water pipeline can effectively solve the technical problems of pipeline silt discharge and pipeline blockage, effectively protect the pipeline, and improve the working efficiency and economic benefits of pipeline transportation.

details as follows:

1. Effectively solve the problem of medium pressure decompression and discharge during long-term shutdown and maintenance of the pipeline, and ensure that the pipeline can operate in the best working condition;

2. Effectively prevent the blockage and pipe burst accidents of the water transmission and transfer system pipes, and effectively ensure the safety of the pipe network system;

3. Improve the stability of the pipeline water transfer system and the work efficiency of pipeline transportation, prolong the service life of the pipeline, and improve the economic benefits of water transfer and transfer.

Description of drawings

Fig. 1 is the overall schematic diagram of the supplemental exhaust device and the damping discharge device of the water lifting and water conveying parts

6- Intake pool, 7- Supplementary exhaust device 1, 8- Supplementary exhaust device 2, 31- Discharge device 1, 33-U-shaped pipe 1,

35- Discharge device 2, 37-U-shaped pipe 2, 30-Water outlet, 30-Outlet, 9-Supplementary exhaust device 3, 10-Supplementary exhaust device 4,, 40-Resistance discharge device 3 ,41-U-type pipeline 3, 43-discharge device 4, 44-U-type pipeline 4, 46-discharge device 5, 47-U-type pipeline 5, 20-water demand point;

Figure 2 is a schematic diagram of the structure of the stilling discharge device

2- Vent valve room, 3- Stilling well, 48- Connecting short pipe, 49- Maintenance ball valve, 50- Conical vent valve, 51- Evacuation pipe, 52- Overflow pipe.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

In this embodiment, the data used are preferred solutions, but are not used to limit the present invention;

In this embodiment, the supplemental exhaust device can be placed in multiple groups in long-distance pipelines with complex terrain;

Example 1

As shown in FIG. 1 , this embodiment provides a stilling and draining device for a long-distance water transmission and transfer system, including a water inlet pool, a supplemental exhaust device, a conveying pipeline, a stilling and emptying device, a water outlet pool and a water demand point; The pool is set at the lowest point at the beginning of the system, and the outlet pool is set at the highest point in the middle of the system. The inlet pool is connected to the water inlet of the outlet pool through a one-way water supply pipe; The U-shaped pipeline has a height difference to form a pipeline high point, a second high point, a low point and a second low point. Set up supplemental exhaust devices at the high point and the second high point, and set up the exhaust emission device at the low point and the second low point;

In this embodiment, when the water-lifting part of the pipeline is out of service for a long time, when a new pipeline is built or repaired and maintained, it is necessary to regularly discharge mud and sand from the lower part of the pipeline to avoid blockage caused by long-term accumulation of sediment in the water;

In this embodiment, there is another situation. Since the long-distance water transmission pipeline operates in the best working condition when the pipeline is full, when the pipeline is blocked, it is only necessary to turn on the force-relief and emptying device set at the low point for emptying. Overhaul, so that the full pipe water can be quickly replenished and production can be resumed quickly.

Example 2

As shown in FIG. 1 , the present embodiment provides a power dissipation and discharge device for a long-distance water transmission and transfer system, which is characterized in that it includes: a water inlet pool, a water outlet pool, a supplement and exhaust device, a transportation pipeline, a water demand point, and a water outlet pool. It is set at the highest point in the middle of the system, the water demand point is set at the end of the system, and the water outlet end of the water outlet is connected to the pipe to supply water to the water demand point in one direction. The U-shaped pipeline has a height difference to form a pipeline high point and a second high point, a low point and a second low point; in the pipeline between the water outlet and the water demand point, the high point and the second highest point Supplementary exhaust devices are installed at the points, and stilling discharge devices are installed at low points and sub-low points;

In this embodiment, the high point formed by the pipeline is used to convey water to the low point and the low point to lift water to the high point, so as to solve the problem of emptying and stilling discharge of the long-distance water conveying pipeline with complex terrain;

In this embodiment, a supplemental exhaust device is provided. When the water delivery pipeline is out of service for a long time, when a new pipeline is built or repaired and maintained, it is necessary to regularly discharge mud and sand in the pipeline at the lower part of the pipeline to avoid the water in the water. Long-term accumulation of sediment causes blockage;

In this embodiment, there is another situation. Since the long-distance water delivery pipeline operates in the best working condition when the pipeline is full, when it is blocked, the flow path will be affected and the delivery volume will be reduced. Therefore, it needs to be opened at a low point and a The energy-discharging device at the second low point was vented and repaired, and production was quickly resumed.

Example 3

As shown in FIG. 2 , the present embodiment provides a drag and discharge device and an operation method for a long-distance water transmission and transfer system. The drag and discharge device includes a venting valve chamber and a drag well, and a short pipe is connected to the main pipeline at the low point. Set, the short pipe is connected to the indoor main pipe of the venting valve, the emptying pipe is connected to the stilling well, the stilling well is connected to the overflow pipe, and the overflow pipe is connected to the drainage ditch; The empty pipe is bent down through the stilling well, and the overflow port reaches a high level in the stilling well and flows out through the overflow pipe;

In this embodiment, the water flow is connected to the emptying main pipe, and after slowly opening the maintenance ball valve and the conical emptying valve, the pressure is released into the stilling well through the outlet pipe. It can effectively remove the silt accumulated during the long-term outage; because the pipeline is in many places in the wild, after the pressureless discharge through the stilling device, it can effectively avoid the rupture of the pipeline and the release of the water in the pipeline with the pressure. occur.

Through the above embodiments, the technical problems of in-pipe supplementary and exhaust gas in the water lifting pipeline system and the water delivery pipeline system can be effectively solved, the technical problems of pipeline accumulation and discharge and pipeline blockage can be effectively solved, and the safety of the entire pipeline network system and equipment can be ensured. Promote the safe, stable, cost-effective and efficient operation of the pipe network system.

The above are only the preferred embodiments of the invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (9)

1. A stilling discharge device for a long-distance water transmission and transfer system, comprising a water inlet pool (6), a water outlet pool (30), a water demand point (20), a supplemental exhaust device, a stilling discharge device, and a water inlet pool (6) ) The inlet of the water outlet pool (30) is connected by a pipeline to form the water-lifting part of the water transfer system, and the outlet of the water outlet pool (30) is connected to the water demand point (20) by a pipeline to form the water transfer part of the water transfer system. The pipelines of the water part and the water-lifting part are set along the terrain, and the pipelines of the water-conveying part and the water-lifting part with large terrain fluctuations are segmented to form high points and sub-high points, as well as low points and sub-low points. Supplementary exhaust devices are installed on the upper, and stilling exhaust devices are installed on the low point and the second low point. 2. The power-discharging device of a long-distance water transmission and transfer system according to claim 1, characterized in that, the water inlet pool (6) of the water lifting part is arranged at the lowest point at the beginning of the system, and the water outlet pool (30) It is arranged at the highest point in the middle end of the system, and the water inlet pool (6) is connected to the water inlet port of the water outlet pool (30) through a one-way water supply through a pipeline. 3 . The force-discharging device of a long-distance water transmission and transfer system according to claim 2 , wherein the initial end of the water-lifting part pipeline supplies water upward, and the pipeline is undulating to form a U-shaped pipeline, and the U-shaped pipeline is formed. There is a height difference in the pipeline to form a pipeline low point and a second low point, and a U-shaped pipeline (33) and a U-shaped pipeline (37) are formed at the low point and the second low point. A drag discharge device (31) and a drag discharge device (35) are arranged on the type pipeline (37). 4. The power-discharging device of a long-distance water transmission and transfer system according to claim 1, wherein the high point and the second high point of the water-lifting part are provided with a supplementary exhaust device (7) and a supplementary exhaust device (7) and a supplementary exhaust device (7). Exhaust (8). 5. The power-discharging device of a long-distance water transmission and transfer system according to claim 1, characterized in that, the water-conveying part outlet pool (30) is arranged at the highest point in the middle of the system, and the water-requiring point ( 20) It is arranged at the end of the system, and the water outlet end of the water outlet pool (30) is connected to a pipeline for one-way water supply and leads to the water demand point (20). 6. The power-discharging device of a long-distance water transmission and transfer system according to claim 5, characterized in that, the water-conveying part of the pipeline flows out from the water outlet pool (30) and supplies water by gravity flow, and the pipeline is undulating to form a U. A U-shaped pipeline, the U-shaped pipeline has a height difference to form a pipeline high point and a secondary high point, as well as a low point and a secondary low point; the pipeline between the water outlet pool (30) and the water demand point (20) forms a U-shaped pipeline The pipeline is connected, and the supplementary exhaust device (9) and the supplementary exhaust device (10) are arranged at the high point and the second high point, and a U-shaped pipeline (41, 44, 47) is formed at the low point and the second low point. Evacuation devices (40, 43, 46) are provided at the low point and the second low point. 7. The stilling and discharging device of a long-distance water transmission and transfer system according to claim 1, characterized in that, said stilling and discharging device comprises a venting valve chamber (2) and a stilling well (3). The connecting short pipe (48) is arranged at a low position to be connected to the main pipe in the venting valve chamber (2), and the emptying pipe (51) is connected to the stilling well (3) and the overflow pipe (52). 8 . The power dissipation device of a long-distance water transfer system according to claim 7 , wherein the main pipe in the vent valve chamber ( 2 ) is sequentially provided with a maintenance ball valve ( 49 ) and a conical vent valve ( 8 . 50), the emptying pipe (51) is bent downward through the stilling well (3) to be connected into the stilling well (3), and then discharged to the drainage ditch through the overflow pipe (52). 9. The power dissipation device and operation method of a long-distance water transmission and transfer system according to any one of claims 1-8, wherein the pipeline of the water transmission and transfer system is arranged in a long-distance, complex terrain, The high lift is divided into a water-lifting part and a water-conveying part. Due to the large fluctuations in the terrain, the water-lifting part and the water-conveying part form a low point and a sub-low point, a high point and a sub-high point, and finally form a U-shaped pipeline; A supplementary exhaust device and a stilling discharge device are arranged on the type pipeline. The absorbing and exhausting device includes: a venting valve chamber (2) and a stilling well (3). The water flow is connected to the main pipe through the connecting short pipe (48), which is slowly opened for maintenance After the ball valve (49) and the conical vent valve (50), the pressure is released into the stilling well (3) through the outlet emptying pipe (51), and the liquid level gradually rises from the overflow pipe (52) to the drain without pressure. aisle.

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