CN216588721U - Tunnel ponding vacuum drainage system - Google Patents
Tunnel ponding vacuum drainage system Download PDFInfo
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- CN216588721U CN216588721U CN202122538026.XU CN202122538026U CN216588721U CN 216588721 U CN216588721 U CN 216588721U CN 202122538026 U CN202122538026 U CN 202122538026U CN 216588721 U CN216588721 U CN 216588721U
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Abstract
The utility model is suitable for the field of tunnel drainage, and provides a tunnel accumulated water vacuum drainage system which comprises accumulated water points positioned at each position of a rail system and a vacuum unit, wherein all the accumulated water points are connected to the vacuum unit through vacuum pipelines, the vacuum unit comprises a vacuum energy storage sewage tank, a vacuum pump, a sewage pump and a steam-water separator, the vacuum pump is connected to an air outlet of the vacuum energy storage sewage tank, the sewage pump is connected to a sewage outlet of the vacuum energy storage sewage tank, and the steam-water separator is connected to the vacuum pump. This system passes through vacuum energy storage sewage jar and vacuum pipeline as the buffering, has avoided the frequent start-up of pump in the system, and entire system drainage is effectual, can take out the ponding of various low-lying positions smoothly fast in the rail system, and system stability is high moreover, and the pipeline does not have the jam and does not have the scale deposit hidden danger, and the later maintenance cost is low.
Description
Technical Field
The utility model belongs to the technical field of tunnel drainage, and particularly relates to a tunnel ponding vacuum drainage system.
Background
In the interval design engineering in tunnel, generally be equipped with contact passageway and waste water pump station in interval tunnel, tunnel drainage is with the help of the catchment ability of railway roadbed escape canal, collects waste water to the pond of catchmenting of interval low point pump station in to adopt the immersible pump drainage, including the fire control waste water under a small amount of structure percolating water and the accident operating mode. When the local low point of the shield interval tunnel does not have the condition of setting the contact channel, the standard collecting tank can not be implemented under the rail, the tunnel drainage mainly depends on the design of optimizing the collecting tank of the ballast bed at the low point, and is assisted by a specific mechanical drainage facility, so that the drainage is realized.
At present, in a track construction system, with the wide investment and operation of track traffic, the problem of water accumulation at low-lying positions such as a switch machine foundation pit, an elevator foundation pit, a cable track passage, a substation interlayer and the like is increasingly serious, and particularly the problem of water accumulation in underground engineering in regions with abundant underground water such as a long triangle, a bead triangle and the like is particularly prominent. Because the tunnel structure limits, the traditional gravity flow drainage is difficult to solve the problem of water accumulation at each low-lying position of a tunnel track, and becomes an industrial problem. And the immersible pump drainage commonly used is restricted by the protection water level of stopping the pump, still can preserve the deep waste water of 100 ~ 200mm in the pond of catchmenting, and the easy corrosion of water pump, and deposit water for a long time, cause the problem of ballast bed, rail corrosion, and the requirement to daily fortune and maintenance is very high.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention aims to provide a tunnel accumulated water vacuum drainage system, which aims to solve the technical problem that the accumulated water in each low-lying position of a tunnel track is difficult to solve by the existing traditional gravity flow drainage.
The utility model adopts the following technical scheme:
the tunnel ponding vacuum drainage system comprises ponding points located at each position of a track system and further comprises a vacuum unit, all ponding points are connected to the vacuum unit through vacuum pipelines, the vacuum unit comprises a vacuum energy storage sewage tank, a vacuum pump, a sewage pump and a steam-water separator, the vacuum pump is connected to a gas outlet of the vacuum energy storage sewage tank, the sewage pump is connected to a sewage discharge outlet of the vacuum energy storage sewage tank, and the steam-water separator is connected to the vacuum pump.
Furthermore, the vacuum suction inlet of the vacuum energy storage sewage tank is connected with an inlet pipe, the inlet pipe is provided with an inlet valve, and all water accumulation points are connected to the inlet pipe through a vacuum pipeline.
Furthermore, the vacuum pump is connected in parallel with a plurality of groups, and a vacuum control valve and a vacuum check valve are arranged on a pipeline where each group of vacuum pumps is located.
Further, the drain outlet of the vacuum energy storage sewage tank is connected with a drain pipe, and a soft joint, an overhaul check valve and an overhaul gate valve are arranged on the drain pipe.
Furthermore, a plurality of groups of sewage pumps are arranged on the sewage discharge pipe, and a sewage discharge check valve is arranged at the outlet end of each group of sewage pumps.
Furthermore, a temperature sensor and a liquid level sensor are arranged on the steam-water separator, and the steam-water separator is connected with a ventilation pipe.
Further, ponding point is including the pipe that absorbs water, signal control box and vacuum diaphragm valve, the vacuum diaphragm valve set up in the pipe upper portion that absorbs water, the signal control box is connected with the liquid level cable, the liquid level cable has a plurality of level sensor at co-altitude, be provided with the ooff valve on the outlet pipeline of vacuum diaphragm valve, be connected with emergent pipe on the pipeline between ooff valve and the vacuum diaphragm valve, there is emergent valve on the emergent pipe.
Furthermore, a vacuum collector is arranged at the bottom of the water suction pipe, and a filtering pore is arranged at the bottom of the vacuum collector.
Furthermore, the position of each water accumulation point is lower than that of the vacuum unit, and a plurality of water traps are formed on a vacuum pipeline connected with the water accumulation points.
The utility model has the beneficial effects that: according to the utility model, the vacuum energy storage sewage tank and the vacuum pipeline are used as buffers, so that frequent starting of a pump in the system is avoided, the drainage effect of the whole system is good, accumulated water in various low-lying positions in the rail system can be smoothly and quickly pumped out, the system is high in stability, the pipeline is not blocked and has no scaling hidden danger, and the later maintenance cost is low.
Drawings
FIG. 1 is a schematic diagram of a tunnel ponding vacuum drainage system provided by an embodiment of the utility model;
FIG. 2 is a block diagram of a vacuum assembly provided in an embodiment of the present invention;
FIG. 3 is a block diagram of a water accumulation point provided by an embodiment of the present invention;
FIG. 4 is a schematic view of a vacuum line trap provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Fig. 1 shows a structure of a tunnel accumulated water vacuum drainage system provided by an embodiment of the present invention, and only parts related to the embodiment of the present invention are shown for convenience of explanation.
As shown in fig. 1, the tunnel accumulated water vacuum drainage system provided by this embodiment includes accumulated water points 1 located at various positions of a track system, and further includes a vacuum unit 2, and all accumulated water points 1 are connected to the vacuum unit through vacuum pipes 3. As shown in fig. 2, the vacuum unit 2 includes a vacuum energy storage sewage tank 21, a vacuum pump 22, a sewage pump 23 and a steam-water separator 24, the vacuum pump 22 is connected to an air outlet of the vacuum energy storage sewage tank 21, the sewage pump 23 is connected to a sewage outlet of the vacuum energy storage sewage tank 21, and the steam-water separator 24 is connected to the vacuum pump 22.
In this embodiment, the water accumulation points include water accumulation positions at various low-lying positions in the track system (for example, a switch machine foundation pit, an elevator foundation pit, a cable track passage, a substation interlayer, and the like). As a specific structure of the water collection point, as shown in fig. 3, the water collection point comprises a water suction pipe 11, a signal control box 12 and a vacuum diaphragm valve 13, the vacuum diaphragm valve 13 is arranged on the upper portion of the water suction pipe 11, the signal control box 12 is connected with a liquid level cable 14, the liquid level cable 14 is provided with a plurality of liquid level sensors 15 at different heights, an outlet pipeline of the vacuum diaphragm valve 13 is provided with a switch valve 16, a pipeline between the switch valve 16 and the vacuum diaphragm valve 13 is connected with an emergency pipe, and the emergency pipe 17 is provided with an emergency valve 18. The emergency pipe has the function that when other accumulated water exists near the water accumulation point, the emergency pipe can be temporarily connected with a hose at the interface end of the emergency pipe, and the accumulated water nearby is extracted through the hose. The bottom of the suction pipe 11 is provided with a vacuum collector 19, and the bottom of the vacuum collector 19 is provided with a filtering small hole 110 for filtering impurities at the bottom of the foundation pit.
After the system is powered on, a vacuum pump of a default vacuum pump station is started to discharge and suck air in the vacuum energy storage sewage tank and the vacuum pipeline to a set maximum vacuum degree (generally about-70 Kpa) for standby. When the water level of the inner accumulated water of the accumulated water point rises to a set trigger liquid level (for example, 5-15mm, the liquid level is adjustable), namely the water level reaches the height of the corresponding liquid level sensor, the corresponding vacuum diaphragm valve and the corresponding switch valve are opened, and the accumulated water is pumped into the vacuum energy storage sewage tank through the vacuum pipeline by utilizing vacuum negative pressure. When the water level of the water accumulation point is reduced to the set lowest liquid level, the vacuum diaphragm valve is closed by triggering the corresponding liquid level sensor.
If the vacuum degree of the vacuum energy storage sewage tank is reduced to a set minimum value (generally about-45 Kpa), an electric control system of the vacuum unit controls and starts the vacuum pump, and the vacuum degree in the tank is pumped and increased to a set maximum value again. When the water level of the vacuum energy storage sewage tank rises to a set highest position, the electric control system starts the sewage pump to pressurize and discharge accumulated water in the tank to a municipal pipe network or other positions. When the water level in the tank is reduced to the set lowest level, the sewage pump stops.
In the figure, the vacuum pumps 22 are connected in parallel to form a plurality of groups, and a vacuum control valve 27 and a vacuum check valve 28 are arranged on a pipeline where each group of vacuum pumps 22 is located. When the vacuum pump 22 is started, the corresponding vacuum control valves are opened, and the vacuum pumps are provided with a plurality of groups to improve the vacuum pumping speed of the vacuum energy storage sewage tank. In addition, the drain outlet of the vacuum energy storage sewage tank 21 is connected with a drain pipe, and the drain pipe is provided with a soft joint 29, an inspection check valve 210 and an inspection gate valve 211. The blow off pipe end-to-end connection is to the wastewater disposal basin, when needs overhaul, can close the maintenance gate valve, overhauls the check valve simultaneously and guarantees that the air is reverse not to get into the jar body. The sewage discharge pipe is provided with a plurality of groups of sewage discharge pumps 23, and the outlet end of each group of sewage discharge pumps 23 is provided with a sewage discharge check valve 212. The dredge pump sets up the multiunit, realizes discharging the internal sewage of jar fast, the blowdown check valve further guarantees that the air can not reverse entering jar body.
Further, a temperature sensor and a liquid level sensor are arranged on the steam-water separator, and the steam-water separator is connected with a ventilation pipe 241. And the gas pumped from the vacuum energy storage sewage tank passes through the steam-water separator to absorb the moisture in the gas, and the separated gas is discharged to a ventilation shaft through a ventilation pipe and is discharged. A temperature sensor on the steam-water separator is used for monitoring the working temperature of the equipment, and a liquid level sensor is used for monitoring the water level inside the equipment, so that the equipment can work normally and safely.
Under the general condition, the vacuum unit sets up in the pump house, and each ponding point position is less than the vacuum unit, as shown in fig. 4, there is the uphill section in the vacuum pipe 3 that ponding point connects, and the uphill section is formed with a plurality of traps 31, there is complete section water column in the vacuum pipe can be guaranteed to the trap, conveniently extracts the ponding in the ponding point.
Operation practices prove that the system is mature and stable, automatic intelligent operation can be realized, the vacuum energy storage water tank and the vacuum pipeline are used as buffers through scientific and reasonable configuration, frequent starting of the pump is avoided, the only pump which can be started frequently is the vacuum diaphragm valve, the valve core of the ethylene propylene diene monomer rubber barrel is opened by negative pressure and can be opened and closed for tens of thousands of times, and the replacement is not needed for 24 months.
In conclusion, the utility model aims at the characteristic of much calcification and sediment in underground water, adopts the straight full-circle full-channel vacuum diaphragm valve and the large-channel vacuum sewage pump, and the water column flows and flushes in the vacuum pipeline at high speed, so that the system has no blockage and scaling hidden danger, and the maintenance cost of the subsequent system is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The tunnel accumulated water vacuum drainage system is characterized by comprising accumulated water points located at all positions of a track system and a vacuum unit, wherein all the accumulated water points are connected to the vacuum unit through vacuum pipelines, the vacuum unit comprises a vacuum energy storage sewage tank, a vacuum pump, a sewage pump and a steam-water separator, the vacuum pump is connected to an air outlet of the vacuum energy storage sewage tank, the sewage pump is connected to a sewage outlet of the vacuum energy storage sewage tank, and the steam-water separator is connected to the vacuum pump; the vacuum pumps are connected in parallel with a plurality of groups, and a pipeline where each group of vacuum pumps is located is provided with a vacuum control valve and a vacuum check valve; a drain outlet of the vacuum energy storage sewage tank is connected with a drain pipe, and a soft joint, an overhaul check valve and an overhaul gate valve are arranged on the drain pipe; ponding point is including the pipe that absorbs water, signal control box and vacuum diaphragm valve, the vacuum diaphragm valve set up in the pipe upper portion absorbs water, the signal control box is connected with the liquid level cable, the liquid level cable has a plurality of level sensor at the co-altitude, be provided with the ooff valve on the outlet pipeline of vacuum diaphragm valve, be connected with emergent pipe on the pipeline between ooff valve and the vacuum diaphragm valve, there is the emergency valve on the emergent pipe.
2. The tunnel ponding vacuum drainage system of claim 1, wherein a vacuum intake of the vacuum energy storage sewage tank is connected to an inlet pipe, the inlet pipe having an inlet valve thereon, all ponding points being connected to the inlet pipe by a vacuum pipe.
3. The vacuum drainage system for accumulated water in a tunnel according to claim 2, wherein a plurality of groups of the sewage pumps are arranged on the sewage discharge pipe, and a sewage discharge check valve is arranged at the outlet end of each group of the sewage pumps.
4. The vacuum drainage system for accumulated water in a tunnel according to claim 1, wherein a temperature sensor and a liquid level sensor are arranged on the steam-water separator, and the steam-water separator is connected with a ventilation pipe.
5. The system for vacuum drainage of tunnel ponding of claim 4, wherein a vacuum collector is provided at the bottom of said suction pipe, and said vacuum collector has a filtering aperture at the bottom.
6. The tunnel ponding vacuum drainage system of claim 5, wherein each ponding point is below the vacuum unit, and a plurality of traps are formed in the vacuum pipe connected to the ponding point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122538026.XU CN216588721U (en) | 2021-10-21 | 2021-10-21 | Tunnel ponding vacuum drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122538026.XU CN216588721U (en) | 2021-10-21 | 2021-10-21 | Tunnel ponding vacuum drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216588721U true CN216588721U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122538026.XU Active CN216588721U (en) | 2021-10-21 | 2021-10-21 | Tunnel ponding vacuum drainage system |
Country Status (1)
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| CN (1) | CN216588721U (en) |
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2021
- 2021-10-21 CN CN202122538026.XU patent/CN216588721U/en active Active
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