CN210440080U

CN210440080U - Buffering system for eliminating underground pipeline drainage water hammer

Info

Publication number: CN210440080U
Application number: CN201920699936.6U
Authority: CN
Inventors: 马海玉; 曾庆荣; 彭加宁
Original assignee: China Nerin Engineering Co Ltd
Current assignee: China Nerin Engineering Co Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-05-01
Anticipated expiration: 2029-05-16

Abstract

The utility model provides an eliminate buffer system of pipeline drainage water hammer in pit, includes the pipeline that drains in the pit, its characterized in that: the underground drainage pump house is internally provided with a slow-closing check valve and a safety valve, a pipeline conveying mode of pipeline connection is adopted between the underground drainage pump house, the whole process of a drainage pipeline is closed, the underground drainage pipeline is laid in all necessary middle sections, inclined shafts and vertical shafts underground, an underground drainage pipe network system adopts redundancy arrangement, the water hammer buffer device is installed on the drainage pipeline near the underground drainage pump house, and the combined air valve, the check valve, the drain valve, the elbow support and the like are arranged on an outer pipe network of the pump house, so that the protection function when the water hammer occurs to a complex underground drainage system is achieved, and the complex underground drainage system is prevented from being damaged by direct water hammers and indirect water hammers.

Description

Buffering system for eliminating underground pipeline drainage water hammer

Technical Field

The utility model relates to an eliminate buffer system of pipeline drainage water hammer in pit.

Background

The underground mining mine which is partially reconstructed and expanded has longer production history and incomplete early production planning, so that the field production system is more disordered and the drainage system is more dispersed, and when the reconstructed production system and the drainage system have to utilize the old system, the drainage causes larger influence on the production system. In order to prevent the condition that the production cannot be carried out due to the fact that the middle-section drainage quantity is too large, a fully-closed mode of a drainage system pipe network is adopted, namely, all drainage force points are connected through pipelines and are not discharged outside midway, and therefore the water hammer hazard of a drainage system is increased. Particularly, in the domestic underground mining long-distance underground conveying and particularly complex drainage system, a middle roadway generally has a gradient of 3-5 per mill, pipelines are laid along the roadway, and due to the fact that the roadway fluctuates, the pipelines have the conditions of being horizontal, vertically upward, obliquely downward and the like, and the drainage system is particularly complex. During the production process, the conditions of starting and stopping of the water pump, closing and opening of the valve, sudden power failure and the like can generate water hammer inside the pump room and water hammer outside the pump room, the local water hammer can reach 10Mpa, and the pressure of a pipe network is extremely high. In the pump room, equipment accidents in the pump room are mainly caused by the fact that a water hammer of the pump is stopped, a water flow reversely impacts a valve and the water pump. The main reasons outside the pump house are that starting water hammers, continuous water column separation water hammers and flow-breaking closure water hammers exist at the knee parts of all pipelines, and the knee parts of the pipelines which are inclined downwards for a long distance are easy to have the impact phenomena of water column separation and closure, so that the damage to the knee parts of the pipelines is huge. The violent impact between the water body and the pipe wall, the valve wall or the container wall easily causes system damage and even well flooding accidents.

Disclosure of Invention

An object of the utility model is to provide an eliminate buffer system of pipeline drainage water hammer in pit, overcome the relay drainage system that the clear distance of level is far away between the pump house and easily take place the water hammer and strike and cause the system damage, take place the shortcoming of flooding the well accident even.

The utility model provides an eliminate buffer system of pipeline drainage water hammer in pit, includes the pipeline that drains in the pit, its characterized in that: the underground water pump further comprises a water hammer buffer device, a combined air valve, an overhaul valve, a drain valve and a bent pipe support, wherein a slow-closing check valve and a safety valve are arranged in the underground water pump room, the underground drainage pump rooms adopt a pipeline conveying mode of pipeline connection, the drainage pipeline is closed in the whole process, the underground drainage pipeline is laid in all necessary middle sections, inclined shafts and vertical shafts in the underground, the underground drainage pipe network system adopts redundant arrangement, the water hammer buffer device is arranged on a drainage pipeline near the underground drainage pump room, the water hammer buffer device can absorb a large amount of water hammer kinetic energy into the energy accumulator, the composite air valve, the maintenance valve, the water drain valve, the bent pipe support and the like are arranged outside the pump room, so that the protection function of the complex underground drainage system during water hammer occurrence is achieved, and the complex underground drainage system is prevented from being damaged by direct water hammer and indirect water hammer.

The combined air valve is arranged at the knee position of the drainage pipe network pipeline and the position set by simulation so as to ensure that air enters in time, eliminate a water hammer which is caused by the formation and development of a vacuum cavity due to the cut-off of the pipeline and causes two water columns to collide and close once or more times, and ensure that redundant air is discharged from partial positions; the maintenance valve and the drain valve are arranged at partial positions of the drainage pipe network pipeline to ensure that water in the pipeline is drained in time, and conditions are created for maintenance or next starting; the elbow support is arranged at the inflection point of all the upward inclined or vertical upward drainage pipelines to play the roles of supporting the pipelines and resisting water flow impact.

The utility model has the advantages that: when the mine is built and expanded for reuse, the influence of a drainage system on a production system is avoided, a drainage pipe network is laid in all necessary middle sections, inclined shafts (or ascending and descending) and vertical shafts in the pit, a pipeline conveying mode is adopted between water pump rooms to replace middle section ditches for automatic drainage, a water hammer buffer device, a combined air valve and a drain valve are applied to a drainage pipe network system, and the complex underground drainage system is prevented from being damaged by a direct water hammer and an indirect water hammer. The utility model discloses the longer secret mine relay drainage system of level clean distance between the water pump room of mainly used reconstruction extension mine also can be used to newly-built high drainage system of mine drainage.

Drawings

FIG. 1 is a schematic view of a drainage pipe network of the buffering system of the present invention;

FIG. 2 is a schematic view of another drainage pipe network of the buffering system of the present invention;

FIG. 3 is a schematic view of the downhole installation of the composite air valve of the present invention;

FIG. 4 is a schematic view of section C-structure of FIG. 3;

in the figure: the device comprises a downhole drainage pipeline 1, a water hammer buffer device 2, a combined air valve 3, an inspection valve 4, a water drain valve 5 and a bent pipe support 6.

Detailed Description

The structure of the present invention will be described in detail with reference to the accompanying drawings:

the utility model provides an eliminate buffer system of pipeline drainage water hammer in pit, includes drainage pipeline 1 in the pit, its characterized in that: the underground drainage pump room is internally provided with a slow-closing check valve and a safety valve so as to ensure that the reverse rotation speed of the water pump meets the requirement of a motor and effectively protect equipment in the pump room, wherein the slow-closing check valve can reduce the rapid change of the water flow speed in a pipeline when the pump is stopped, so that the water flow speed is slowly changed and the water hammer pressure is reduced; the safety valve can release the redundant kinetic energy into the suction well through the safety valve. The underground drainage pump rooms are communicated by pipelines, the drainage pipelines are closed in the whole process, the underground drainage pipelines 1 are laid in all necessary middle sections, inclined shafts and vertical shafts in the pit, the underground drainage pipe network system adopts a one-use one-standby mode according to the standard requirements, the water hammer buffer device 2 is arranged on the drainage pipelines near the underground drainage pump rooms, and the water hammer buffer device 2 can absorb a large amount of water hammer kinetic energy into an energy accumulator so as to reduce the damage of the water hammer to drainage equipment and facilities in the pump rooms; the combined air valve 3, the maintenance valve 4, the drain valve 5, the elbow support 6 and the like are arranged outside the pump room, the combined air valve 3 is arranged at the knee position of the drainage pipe network pipeline and at the position set by simulation so as to ensure that air enters in time, eliminate the formation and development of a vacuum cavity caused by the cut-off of the pipeline, cause two water columns to collide and close one or more times of water hammer, and ensure that redundant air is discharged from partial positions; the maintenance valve 4 and the drain valve 5 are arranged at the positions of the drainage pipe network pipeline, which are set by simulation and are different from the water hammer buffer device by hundreds of meters to thousands of meters, so as to ensure that water in the pipeline is discharged in time and create conditions for maintenance or next starting; the elbow support 6 is disposed at the inflection point of all the upward inclined or vertical upward drainage pipes to support the pipes and resist water impact. The protective function of the complex underground drainage system when water hammer occurs is achieved, and the complex underground drainage system is prevented from being damaged by direct water hammer and indirect water hammer. The buffer system is particularly suitable for mine drainage systems with long horizontal conveying distance in pits.

The buffering system for eliminating the drainage water hammer of the underground pipeline shown in the figures 1 and 2 leads out two sets of drainage pipe network systems from a drainage pump room with the elevation of-968 m in a certain mine underground to be respectively drained to a drainage pump room with the elevation of-930 m and a drainage pump room with the elevation of-630 m. The left side and the right side of the figures 1 and 2 are respectively connected with drainage pump rooms with different elevations.

The drainage pipe network path of the figure 1 is that after two Ø 325X 10mm drainage pipes (the horizontal projection length is hundreds of meters and the inclined angle is a plurality of meters) with the length of hundreds of meters are led out from a pump room along a middle section roadway of-968 m, the drainage pipes pass through a north wing air inlet pipe cable well (the inclined length is dozens of meters and the inclined angle is a plurality of degrees) of-968 to-918 m to a middle section of-930 m, the drainage pipes are laid along the middle section roadway of-930 m to the pump room along the horizontal projection length of thousands of meters and the inclined angle is a plurality of meters, and the total length of a single pipeline is about a plurality of kilometers.

The drainage pipe network path of the figure 2 is that after a pump room leads out two Ø 273X 10mm drainage pipes (several hundred meters long in horizontal projection length and several meters downward in an inclined manner) with the length of hundreds of meters along a-968 m middle section roadway, the drainage pipes pass through a-958-918 m north wing air inlet pipe cable well (several hundred meters long in inclined manner and several meters in inclined manner) to a-918 m middle section, the drainage pipes pass through a-918-870 m north wing air inlet pipe cable well (several tens of meters long in inclined manner and several meters in inclined manner) to a-870 m middle section after being laid for several tens of meters along the-918 m middle section roadway, the drainage pipes pass through a-880-720 m pipe cable air inlet inclined shaft (several hundreds of meters long in inclined manner) to a-720 m middle section roadway, the middle section of-720 m (several kilometers long in horizontal projection length and several kilometers in inclined manner, the middle section of the pump room passes through a-728-633 m pipe cable inclined shaft (several hundreds of meters in inclined manner, several meters in inclined manner) to a-630 m middle section, and the pump room passes through a single drainage pipe cable well (several meters in inclined manner) and several meters in inclined manner, and the total length of the pump room is laid down.

The drainage pipe network system belongs to a drainage system which is used for underground long-distance transportation and has a particularly complex path in a mining mountain in China. Because of the complex drainage system, the local water hammer generated under the special conditions of pump stop or power failure is nearly 10Mpa, and the system belongs to the mine drainage system with extremely high pipe network pressure. After the system is installed and debugged, manual operation is not needed, and only regular inspection and maintenance are needed. The system adopts redundant setting, and near left side pump house is equipped with water hammer buffer 2, is equipped with slowly-closed check valve and relief valve in the pump house, can guarantee that the water pump reversal rotational speed satisfies the motor requirement, the effectual equipment in the pump house that has protected. The water hammer buffer device 2 can absorb a large amount of water hammer kinetic energy into the energy accumulator; in order to reduce the rapid change of the water flow speed in the pipeline when the pump is stopped, a slow-closing check valve is adopted to ensure that the water flow speed is changed slowly and the water hammer pressure is reduced; in order to avoid the damage of the water hammer to the drainage system equipment, a safety valve is adopted, and the redundant kinetic energy is released into the suction well through the safety valve. The outer pipe network of the pump room is provided with a combined type air valve 3, a maintenance valve 4, a water drain valve 5, a bent pipe support 6 and the like. The knee position of the underground drainage pipeline 1 and the position set by simulation are provided with the combined air valve 3 to timely enter air, so that the formation and development of a vacuum cavity caused by the cut-off of the underground drainage pipeline 1 are eliminated, and water hammers which are caused by one or more times of collision and closure of two water columns are caused, or redundant air is discharged from partial positions. And a maintenance valve 4 and a drain valve 5 are arranged at part of the pipeline to drain water in the pipeline in time, so that conditions are created for maintenance or next starting. All upward pipeline inflection points of slope or perpendicular upwards all set up return bend support 6, play the effect of supporting the pipeline and resisting water impact.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to fall within the scope of the invention as defined by the claims appended hereto.

Claims

1. The utility model provides an eliminate buffer system of pipeline drainage water hammer in pit, includes drainage pipeline (1) in the pit, its characterized in that: the underground water hammer type drainage pump house is characterized by further comprising a water hammer buffering device (2), a combined type air valve (3), an overhaul valve (4), a water drain valve (5) and a bent pipe support (6), wherein a slow-closing check valve and a safety valve are arranged in the underground water drain pump house, a pipeline conveying mode of pipeline connection is adopted between the underground water drain pump house, the whole process of a drainage pipeline is closed, the underground drainage pipeline (1) is laid in all necessary middle sections, inclined shafts and vertical shafts in the underground, a underground drainage pipe network system adopts redundancy setting, the water hammer buffering device (2) is installed on a drainage pipeline near the underground water drain pump house, and the combined type air valve (3), the overhaul valve (4), the water drain valve (5) and the bent pipe support (6) are arranged on an outer pipe network of the pump.

2. The cushioning system for eliminating a drain hammer of a downhole tubing set of claim 1, further comprising: the combined type air valve (3) is installed at the knee position of the drainage pipe network pipeline and the position set through simulation, the maintenance valve (4) and the drain valve (5) are installed at partial positions of the drainage pipe network pipeline, and the elbow support (6) is arranged at the inflection point of the drainage pipe network pipeline on the upward or vertical direction of all the slopes.