CN107905262B - Drainage system of utility tunnel - Google Patents
Drainage system of utility tunnel Download PDFInfo
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- CN107905262B CN107905262B CN201711335171.XA CN201711335171A CN107905262B CN 107905262 B CN107905262 B CN 107905262B CN 201711335171 A CN201711335171 A CN 201711335171A CN 107905262 B CN107905262 B CN 107905262B
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- water
- water seal
- seal well
- drainage
- well
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 283
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 106
- 235000020681 well water Nutrition 0.000 claims abstract description 56
- 239000002349 well water Substances 0.000 claims abstract description 56
- 239000003345 natural gas Substances 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims description 56
- 230000001502 supplementing effect Effects 0.000 claims description 56
- 239000010865 sewage Substances 0.000 claims description 39
- 238000007789 sealing Methods 0.000 claims description 17
- 239000013589 supplement Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000004880 explosion Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009194 climbing Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 108010066057 cabin-1 Proteins 0.000 description 2
- 108010066114 cabin-2 Proteins 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
Abstract
The application discloses a drainage system of a comprehensive pipe gallery, which comprises a comprehensive pipe gallery, a water seal well (4) and a drainage well (5), wherein a water collecting pit (31) is arranged at the bottom of the comprehensive pipe gallery, a water collecting pit drainage pipeline (321) is connected between the water collecting pit (31) and the water seal well (4), a water seal well water outlet pipeline (44) is connected between the water seal well (4) and the drainage well (5), and the height of an outlet of the water collecting pit drainage pipeline (321) is lower than the height of an inlet of the water seal well water outlet pipeline (44). The drainage system of the comprehensive pipe rack can prevent the natural gas leaked from the water collecting pit from leaking outdoors through the drainage system in the dry period, reduce the risk of operation in the pipe rack and stop all possible dangerous accidents.
Description
Technical Field
The application relates to the field of urban underground comprehensive pipe galleries, in particular to a drainage system of a comprehensive pipe gallery.
Background
The urban underground utility tunnel is a structure for accommodating urban engineering pipelines, integrates the urban engineering pipelines such as water supply, water discharge, heat, natural gas, electric power, communication and the like, ensures the safe operation of the underground pipelines, and is an important infrastructure for guaranteeing the urban operation.
In technical Specification of urban Utility tunnel engineering (GB 50838-2015), natural gas pipelines which are incorporated into the urban Utility tunnel should be laid in independent cabins; meanwhile, an automatic drainage system is required to be arranged in the comprehensive pipe rack, the requirements of draining structural water leakage and pipeline overhauling emptying water of the comprehensive pipe rack are met, and an independent water collecting pit is required to be arranged in the natural gas pipeline cabin.
In the prior art, as in chinese patent CN 206279554U, publication date 2017, 6 and 27, and "natural gas tank of utility tunnel" disclosed, a sump is provided in the natural gas tank to collect sewage, an explosion-proof submersible sewage pump is provided in the sump, the explosion-proof submersible sewage pump is started and stopped manually or automatically in interlock with the detection of liquid level in the sump, and sewage in the sump is discharged to an outdoor municipal rainwater inspection well or a rainwater grate through the submersible sewage pump.
The existing water collection pit has the following defects: when the natural gas is inflammable and explosive, and accident leakage occurs, the natural gas and the air are mixed to be within the explosion limit range of the natural gas, so that the explosion is very easy to occur, and a large amount of natural gas is mixed in the air to be harmful to human bodies. The sewage in the sump pit is discharged to an outdoor municipal rainwater inspection well or a rainwater grate through a submersible sewage pump, when the sump pit is in a dry state for a long time and the drainage pipeline is also in a dry state, the drainage pipeline is directly communicated with an outdoor drainage system, and if the natural gas pipeline in the natural gas cabin leaks, the natural gas directly enters the outdoor municipal rainwater inspection well or the rainwater grate by taking the drainage pipeline as a channel, so that the natural gas leaks, and dangerous accidents occur.
Disclosure of Invention
In order to solve the problem that natural gas is easy to leak in the existing natural gas cabin, the application provides the drainage system of the comprehensive pipe gallery, which can prevent the leaked natural gas from leaking outdoors through the drainage system when a water collecting pit is in a dead water period, reduce the risk of operation in the pipe gallery and stop all possible dangerous accidents.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a drainage system of utility tunnel, including utility tunnel, water seal well and drainage well, this utility tunnel contains the natural gas cabin, the bottom of natural gas cabin is equipped with the sump pit, be connected with sump pit drainage pipe between sump pit and the water seal well, be connected with water seal well outlet conduit between water seal well and the drainage well, sump pit drainage pipe can be with the ponding drainage in the sump pit into the water seal well, water seal well outlet conduit can be with the ponding drainage well in the water seal well, the height of the export of sump pit drainage pipe is less than the height of the entry of water seal well outlet conduit.
The bottom in the sump pit is provided with an explosion-proof submersible sewage pump which is connected with an inlet of a sump pit drainage pipeline, and the sump pit drainage pipeline is provided with a check valve and a gate valve.
The water pit drainage pipeline comprises a horizontal section and a vertical section which are connected in sequence, the horizontal section of the water pit drainage pipeline is located above the outside of the comprehensive pipe gallery, the vertical section of the water pit drainage pipeline penetrates through the natural gas cabin, the explosion-proof submersible sewage pump is connected with the lower end of the vertical section of the water pit drainage pipeline, and the check valve and the gate valve are located in the natural gas cabin.
The natural gas cabin is internally provided with a water collecting pit water supplementing pipeline capable of supplementing water into the water collecting pit, the water collecting pit water supplementing pipeline is connected with a stop valve and an electric water supplementing valve, a liquid level control device is arranged in the water collecting pit, the lower surface in the natural gas cabin is provided with a drainage ditch, the drainage ditch is arranged along the length direction of the comprehensive pipe rack, and water can be discharged into the water collecting pit through the drainage ditch.
The drainage system of the utility tunnel further comprises a control unit, the explosion-proof submersible sewage pump, the liquid level control device, the gate valve and the electric water supplementing valve are all connected with the control unit, and the liquid level control device comprises a sensor capable of detecting the water level in the water collecting pit.
The water seal well water outlet pipeline is in a horizontal state, the outlet of the water sump drain pipeline is positioned in the water seal well, the outlet of the water sump drain pipeline faces downwards, the distance between the inner bottom of the water seal well water outlet pipeline and the outlet of the water sump drain pipeline is 500-700 mm, and the distance between the inner bottom of the water seal well water outlet pipeline and the bottom surface in the water seal well is 750-850 mm.
The upper end of the water seal well is positioned on the road surface, a water seal well water supplementing pipeline capable of supplementing water to the water seal well is arranged in the water seal well, a stop valve is arranged on the water seal well water supplementing pipeline, and the height of an outlet of the water seal well water supplementing pipeline is higher than that of an inlet of the water seal well water outlet pipeline.
The upper end of the water seal well is internally provided with a well cover and a small valve chamber, the water seal well water supplementing pipeline comprises a vertical pipeline section, an outlet of the water seal well water supplementing pipeline is positioned at the lower part of the vertical pipeline section, the vertical pipeline section of the water seal well water supplementing pipeline is positioned in the water seal well, the stop valve is arranged on the vertical pipeline section of the water seal well water supplementing pipeline, and the stop valve is positioned in the small valve chamber.
The water seal well is internally provided with a climbing ladder, the upper end of the small valve chamber is provided with a cover plate, the lower part of the water seal well water supplementing pipeline is of a U-shaped structure, the outlet of the water seal well water supplementing pipeline 41 faces upwards, and the distance between the outlet of the water seal well water supplementing pipeline 41 and the inner bottom of the water seal well water outlet pipeline 44 is 150-300 mm.
The utility tunnel also comprises a signal electric cabin and a hydrothermal cabin, and the drainage well, the water seal well, the natural gas cabin, the hydrothermal cabin and the signal electric cabin are sequentially arranged along the width direction of the utility tunnel, and the height of the bottom surface in the drainage well is higher than that in the water seal well, and the height of the bottom surface in the water seal well is equal to that of the upper surface outside the natural gas cabin.
The beneficial effects of the application are as follows:
1. through setting up the water seal well, can prevent that natural gas from taking place to leak when natural gas cabin from taking drainage system as the passageway diffusion to outdoor municipal drainage system, and then diffuse to other uncontrollable areas, gather to within the explosion limit scope, dangerous accidents such as easy emergence explosion
2. The water replenishing pipeline is arranged in the water sealing well, so that the water sealing height in the water sealing well is ensured, the drainage pipeline of the sewage pump is effectively sealed, the drainage system from the sewage pump to the drainage pipeline and the like is ensured to be in a wet state, and natural gas leaked from the natural gas cabin can be prevented from entering the outdoor municipal drainage system.
3. A liquid level control device is arranged in a water pit of the natural gas cabin, and the pump stopping liquid level is set as a sewage pump water seal liquid level. When the liquid level in the water pit is the stop liquid level, the submersible sewage pump is started. An electric water supplementing valve is arranged on the water supplementing pipeline of the water collecting pit. The electric valve can be automatically opened according to liquid level control, so that the water sealing liquid level of the sewage pump in the water pit is ensured, and natural gas leakage is prevented.
4. The application provides a water seal in a water collecting pit and a water seal in a water seal well for a drainage system of a comprehensive pipe rack, which ensure that natural gas is prevented from being diffused to other environments by taking the drainage system as a channel to cause damage when the natural gas cabin leaks.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic top view of a utility tunnel drainage system according to the present application.
Fig. 2 is a schematic cross-sectional view taken along A-A in fig. 1.
Fig. 3 is a schematic view of the lower portion of the water seal well of fig. 2.
1. A communication electric cabin; 2. a hydrothermal chamber; 3. a natural gas tank; 4. sealing the well; 5. a drainage well; 6. a drain pipe; 7. road surface;
31. a water collecting pit; 32. an explosion-proof submersible sewage pump; 33. a sump water replenishing pipe; 34. a liquid level control device;
301. a drainage ditch;
321. a sump drain pipe; 322. a check valve; 323. a gate valve;
331. a stop valve; 332. an electric water supplementing valve;
41. water-sealing well water-supplementing pipeline; 42. a well cover; 43. a small valve chamber; 44. water outlet pipeline of water seal well;
411. a stop valve; 431. and a cover plate.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a drainage system of utility tunnel, including utility tunnel, water seal well 4 and drainage well 5, this utility tunnel contains natural gas tank 3, the bottom of natural gas tank 3 is equipped with sump pit 31, be connected with sump pit drainage pipe 321 between sump pit 31 and the water seal well 4, be connected with water seal well outlet conduit 44 between water seal well 4 and the drainage well 5, sump pit drainage pipe 321 can be with the ponding in the sump pit 31 drain into water seal well 4, water seal well outlet conduit 44 can be with the ponding in the water seal well 4 drain well 5, the height of the entry of sump pit drainage pipe 321's export is less than the height of the entry of water seal well outlet conduit 44, as shown in fig. 1 and 2.
The normal state of the water collecting pit drainage pipeline 321 is wet after the water sealing well 4 is added, the water sealing in the water collecting pit 31 seals the submersible sewage pump, the water sealing in the water sealing well 4 seals the water in the drainage pipeline, and the two-stage water sealing seals the drainage system. The problem that when the water suction port of the sewage pump is exposed due to the liquid level reduction caused by evaporation, leakage and the like of water in the water pit 31 under the condition that the water supplementing valve or the liquid level control device fails after the water pit 31 of the natural air cabin stops pumping liquid level is solved, two water seals still seal a drainage system, and gas is prevented from leaking to other uncontrollable environments by taking the water sealing as a channel to cause dangerous accidents.
In this embodiment, an explosion-proof submersible sewage pump 32 is arranged at the bottom in the sump 31, the explosion-proof submersible sewage pump 32 is connected with the inlet of a sump drain pipe 321, and a check valve 322 and a gate valve 323 are arranged on the sump drain pipe 321. The sump drain pipe 321 has a horizontal section and a vertical section which are sequentially connected, as shown in fig. 2, the horizontal section of the sump drain pipe 321 is located above the outside of the utility tunnel, the vertical section of the sump drain pipe 321 passes through the natural gas tank 3, the explosion-proof submersible sewage pump 32 is connected with the lower end of the vertical section of the sump drain pipe 321, the outlet of the sump drain pipe 321 is located in the water seal well 4, the inlet of the sump drain pipe 321 is located at the lower end of the vertical section of the sump drain pipe 321, and the check valve 322 and the gate valve 323 are located in the natural gas tank 3.
In this embodiment, a sump water supply pipe 33 capable of supplying water into the sump 31 is provided in the natural gas tank 3, the sump water supply pipe 33 is connected with a stop valve 331 and an electric water supply valve 332, a liquid level control device 34 is provided in the sump 31, a drain 301 is provided on the lower surface of the natural gas tank 3, the drain 301 is provided along the length direction of the utility tunnel, and the drain 301 can drain water into the sump 31. The sump moisturizing pipe 33 has a vertical pipe section, and the shut-off valve 331 and the electric moisturizing valve 332 are both located in the vertical pipe section of the sump moisturizing pipe 33, and the lower end of the vertical pipe section of the sump moisturizing pipe 33 is located in the sump 31.
In the present application, the longitudinal direction of the utility tunnel is perpendicular to the paper surface of fig. 2, the width direction of the utility tunnel is the left-right direction in fig. 2, and the height direction of the utility tunnel is the up-down direction in fig. 2. In the present application, the length is the dimension perpendicular to the paper surface of fig. 2, the width is the dimension in the left-right direction of fig. 2, and the height is the dimension in the up-down direction of fig. 2. The drain 301 communicates with the upper end of the sump 31, and the slope of the drain 301 is the same as that of the natural gas tank 3. The length of the water collection pit 31 in the natural gas tank 3 is 1.2m, the width is 1.2m, and the depth is 1.5 m-2.0 m. The top of the water pit 31 is provided with a steel grating plate, and the side wall of the water pit 31 is provided with a climbing ladder. The drainage well 5 is municipal rainwater drainage well, and the drainage well 5 is communicated with the drainage pipe 6.
In this embodiment, the drainage system of the utility tunnel further includes a control unit, and the explosion-proof submersible sewage pump 32, the liquid level control device 34, the gate valve 323 and the electric water replenishment valve 332 are all connected to the control unit, and the liquid level control device 34 includes a sensor capable of detecting the water level in the sump 31.
The control unit is located in a remote control room, and the start and stop of the explosion-proof submersible sewage pump 32 is interlocked with the liquid level control device 34 in the sump 31. The level control 34 is capable of sending on and off the pump and the water replenishment level detection signal and the alarm signal to the control unit of the control room. When the liquid level control device 34 detects the liquid level in the sump 31 to the pump starting liquid level, an alarm signal is sent to the control room, and meanwhile, the explosion-proof submersible sewage pump 32 is started to discharge sewage in the sump 31, and the pump starting liquid level is 300mm away from the top of the sump 31. When the liquid level control device 34 detects that the liquid level of the sump 31 reaches the pump stopping liquid level, an alarm signal is sent to the control room, meanwhile, the explosion-proof submersible sewage pump 32 is stopped, and the pump stopping liquid level of the explosion-proof submersible sewage pump 32 is set to be the water sealing liquid level of the explosion-proof submersible sewage pump 32, and the pump stopping liquid level is 700mm away from the bottom of the sump 31. The distance from the suction inlet of the explosion-proof submersible sewage pump 32 is more than 500mm. The water-collecting pit drainage pipeline 321 is connected with the water-sealing well 4, and sewage in the water-sealing well 4 is discharged into a municipal rainwater system through the water-sealing well water outlet pipeline 44.
The pipe diameter of the water tank water supplementing pipe 33 in the water tank 31 is DN25, an electric water supplementing valve 332 and a cut-off stop valve 331 are arranged on the water tank water supplementing pipe 33, the cut-off stop valve 331 is normally open in normal operation, and a switch of the electric water supplementing valve 332 is interlocked with a liquid level control device 34 in the water tank 31, and meanwhile, the electric water supplementing valve is controlled by a remote control room and is automatically interlocked with the liquid level control device. When the liquid level control device 34 detects that the liquid level of the water pit 31 is lower than the water seal liquid level, an alarm signal is sent to the control room, meanwhile, the electric water supplementing valve 332 is opened, and the electric water supplementing valve 332 is started until the liquid level is 600mm away from the bottom of the water pit 31. When the liquid level control device 34 detects that the liquid level in the water pit 31 is higher than the water seal liquid level, an alarm signal is sent to the control room, meanwhile, the electric water supplementing valve 332 is closed, and the liquid level height of the electric water supplementing valve 332 is 800mm away from the bottom of the water pit 31.
In this embodiment, the water seal well water outlet pipeline 44 is in a horizontal state, the outlet of the water sump water outlet pipeline 321 is located in the water seal well 4, the outlet of the water sump water outlet pipeline 321 faces downwards, the distance D1 between the inner bottom of the water seal well water outlet pipeline 44 and the outlet of the water sump water outlet pipeline 321 is 500 mm-700 mm, and the distance D2 between the inner bottom of the water seal well water outlet pipeline 44 and the bottom surface in the water seal well 4 is 750 mm-850 mm, as shown in fig. 3.
Specifically, the diameter of the water seal well 4 is 1.2m, and the depth is 1.8m. The elevation of the water seal well water outlet pipeline 44 is influenced by a nearby municipal rain drainage well (namely a drainage well 5), the distance D1 between the inner bottom of the water seal well water outlet pipeline 44 and the outlet of the water collection pit drainage pipeline 321 connected into the water seal well 4 is 600mm, the distance D2 between the inner bottom of the water seal well water outlet pipeline 44 and the bottom surface of the water seal well 4 is 800mm, and the outlet of the water collection pit drainage pipeline 321 connected into the water seal well 4 is 200mm from the bottom surface of the water seal well 4.
In this embodiment, the upper end of the water seal well 4 is located on the road surface 7, a water seal well water supplementing pipe 41 capable of supplementing water to the water seal well 4 is arranged in the water seal well 4, a stop valve 411 is arranged on the water seal well water supplementing pipe 41, the stop valve 411 is a manual stop valve, and the height of the outlet of the water seal well water supplementing pipe 41 is higher than the height of the inlet of the water seal well water outlet pipe 44. The upper end of the water seal well 4 is internally provided with a well cover 42 and a small valve chamber 43, the water seal well water supplementing pipeline 41 comprises a vertical pipeline section, an outlet of the water seal well water supplementing pipeline 41 is positioned at the lower part of the vertical pipeline section, the vertical pipeline section of the water seal well water supplementing pipeline 41 is positioned in the water seal well 4, a stop valve 411 is arranged on the vertical pipeline section of the water seal well water supplementing pipeline 41, and the stop valve 411 is positioned in the small valve chamber 43.
In this embodiment, a ladder stand is disposed in the water seal well 4, a cover plate 431 is disposed at the upper end of the small valve chamber 43, the lower portion of the water seal well water supplementing pipe 41 is in a U-shaped structure, the outlet of the water seal well water supplementing pipe 41 faces upwards, the distance D3 between the outlet of the water seal well water supplementing pipe 41 and the inner bottom of the water seal well water outlet pipe 44 is 150 mm-300 mm, and preferably the distance D3 between the outlet of the water seal well water supplementing pipe 41 and the inner bottom of the water seal well water outlet pipe 44 is 200mm, as shown in fig. 3.
Specifically, the pipe diameter of the water seal well water supplementing pipe 41 is DN25. The lower end of the water seal well water supplementing pipeline 41 is a U-shaped bent pipe, and the distance D3 between the outlet of the water seal well water supplementing pipeline 41 and the inner bottom of the water seal well water outlet pipeline 44 of the water seal well 4 is 200mm. The top of the water seal well 4 is provided with a cast iron well cover 42, and the side wall in the water seal well 4 is provided with a vertical ladder. The diameter of the small valve chamber 43 is 300mm, and a steel cover plate 431 is provided on the small valve chamber 43. The inspection personnel can periodically open the stop valve 411 to supplement water into the water seal well 4, and when the water level in the water seal well 4 reaches the inner bottom elevation of the water seal well outlet pipeline 44, the stop valve 411 is closed.
In this embodiment, the utility tunnel further includes a signal electric cabin 1 and a hydro-thermal cabin 2, and along the width direction of the utility tunnel, the drainage well 5, the water seal well 4, the natural gas cabin 3, the hydro-thermal cabin 2 and the signal electric cabin 1 are sequentially arranged, the height of the bottom surface in the drainage well 5 is higher than the height of the bottom surface in the water seal well 4, and the height of the bottom surface in the water seal well 4 is equal to the height of the outer upper surface of the natural gas cabin 3, as shown in fig. 2.
The length of the water pit 31 in the natural gas tank 3 is 1.2m, the width of the water pit 31 is 1.2m, and the depth of the water pit 31 is 1.5 m-2.0 m. The top of the water pit 31 is provided with a steel grating plate, the side wall of the water pit 31 is provided with a climbing ladder, and the diameter of the water seal well 4 is 1m.
The foregoing description of the embodiments of the application is not intended to limit the scope of the application, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the application shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (8)
1. The utility tunnel drainage system is characterized by comprising a utility tunnel, a water seal well (4) and a drainage well (5), wherein the utility tunnel comprises a natural gas cabin (3), a water collecting pit (31) is arranged at the bottom of the natural gas cabin (3), a water collecting pit drainage pipeline (321) is connected between the water collecting pit (31) and the water seal well (4), a water seal well outlet pipeline (44) is connected between the water seal well (4) and the drainage well (5), the water collecting pit drainage pipeline (321) can drain accumulated water in the water collecting pit (31) into the water seal well (4), the water seal well outlet pipeline (44) can drain accumulated water in the water seal well (4) into the drainage well (5), and the outlet of the water collecting pit drainage pipeline (321) is lower than the inlet of the water seal well outlet pipeline (44);
an explosion-proof submersible sewage pump (32) is arranged at the bottom in the water collecting pit (31), the explosion-proof submersible sewage pump (32) is connected with an inlet of a water collecting pit drainage pipeline (321), and a check valve (322) and a gate valve (323) are arranged on the water collecting pit drainage pipeline (321);
a water collecting pit water supplementing pipeline (33) capable of supplementing water into the water collecting pit (31) is arranged in the natural gas cabin (3), the water collecting pit water supplementing pipeline (33) is connected with a stop valve (331) and an electric water supplementing valve (332), and a liquid level control device (34) is arranged in the water collecting pit (31);
the drainage system of the utility tunnel further comprises a control unit, wherein the explosion-proof submersible sewage pump (32), the liquid level control device (34), the gate valve (323) and the electric water supplementing valve (332) are all connected with the control unit, and the liquid level control device (34) comprises a sensor capable of detecting the water level in the water pit (31);
when the liquid level control device (34) detects the liquid level in the water sump (31) to the pump starting liquid level, the control unit can start the explosion-proof submersible sewage pump (32) to discharge sewage in the water sump (31) to the water seal well (4); when the liquid level control device (34) detects that the liquid level in the water pit (31) reaches the pump stopping liquid level, the control unit can stop the explosion-proof submersible sewage pump (32), and the pump stopping liquid level of the explosion-proof submersible sewage pump (32) is the water sealing liquid level of the explosion-proof submersible sewage pump (32);
when the liquid level control device (34) detects that the liquid level of the water collecting pit (31) is lower than the water seal liquid level, the control unit can open the electric water supplementing valve (332); when the liquid level control device (34) detects that the liquid level in the water collecting pit (31) is higher than the water seal liquid level, the control unit can close the electric water supplementing valve (332);
the water seal well water outlet pipeline (44) is in a horizontal state, and the distance between the inner bottom of the water seal well water outlet pipeline (44) and the bottom surface in the water seal well (4) is 750-850 mm;
a water seal well water supplementing pipeline (41) which can supplement water to the water seal well (4) is arranged in the water seal well (4), and a stop valve (411) is arranged on the water seal well water supplementing pipeline (41).
2. The utility tunnel drainage system according to claim 1, characterized in that the sump drainage pipe (321) has a horizontal section and a vertical section connected in sequence, the horizontal section of the sump drainage pipe (321) is located above the outside of the utility tunnel, the vertical section of the sump drainage pipe (321) passes through the natural gas tank (3), the explosion-proof submersible sewage pump (32) is connected with the lower end of the vertical section of the sump drainage pipe (321), and the check valve (322) and the gate valve (323) are located in the natural gas tank (3).
3. The utility tunnel drainage system of claim 2, characterized in that the lower surface in the natural gas tank (3) is provided with a drainage ditch (301), the drainage ditch (301) being arranged along the length direction of the utility tunnel, the drainage ditch (301) being capable of draining water into the sump (31).
4. The drainage system of the utility tunnel according to claim 1, wherein the outlet of the sump drain pipe (321) is located in the water seal well (4), the outlet of the sump drain pipe (321) is downward, and the distance between the inner bottom of the water seal well drain pipe (44) and the outlet of the sump drain pipe (321) is 500mm to 700mm.
5. The utility tunnel drainage system of claim 1, wherein the upper end of the water seal well (4) is located on the road surface (7), and the height of the outlet of the water seal well water replenishing pipe (41) is higher than the height of the inlet of the water seal well water discharging pipe (44).
6. The utility tunnel drainage system according to claim 5, characterized in that the upper end of the water seal well (4) is internally provided with a well lid (42) and a small valve chamber (43), the water seal well water replenishing pipe (41) comprises a vertical pipe section, the outlet of the water seal well water replenishing pipe (41) is positioned at the lower part of the vertical pipe section, the vertical pipe section of the water seal well water replenishing pipe (41) is positioned in the water seal well (4), the stop valve (411) is arranged in the vertical pipe section of the water seal well water replenishing pipe (41), and the stop valve (411) is positioned in the small valve chamber (43).
7. The drainage system of the utility tunnel according to claim 6, characterized in that a ladder stand is arranged in the water seal well (4), a cover plate (431) is arranged at the upper end of the small valve chamber (43), the lower part of the water seal well water supplementing pipeline (41) is of a U-shaped structure, the outlet of the water seal well water supplementing pipeline (41) faces upwards, and the distance between the outlet of the water seal well water supplementing pipeline (41) and the inner bottom of the water seal well water outlet pipeline (44) is 150-300 mm.
8. The utility tunnel drainage system according to claim 1, further comprising a signal electric tank (1) and a hydro-thermal tank (2), wherein the drainage wells (5), the water seal wells (4), the natural gas tank (3), the hydro-thermal tank (2) and the signal electric tank (1) are arranged in this order along the width direction of the utility tunnel, the height of the bottom surface in the drainage wells (5) is higher than the height of the bottom surface in the water seal wells (4), and the height of the bottom surface in the water seal wells (4) is equal to the height of the outer upper surface of the natural gas tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108589774A (en) * | 2018-05-07 | 2018-09-28 | 中国市政工程西北设计研究院有限公司 | A kind of integrated drainage system of Urban Underground pipe gallery |
| CN112681370A (en) * | 2019-10-18 | 2021-04-20 | 中冶京诚工程技术有限公司 | Utility tunnel |
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| CN206279554U (en) * | 2016-12-02 | 2017-06-27 | 中冶京诚工程技术有限公司 | A kind of natural gas cabin of pipe gallery |
| CN206289715U (en) * | 2016-10-21 | 2017-06-30 | 中国天辰工程有限公司 | A kind of trapped well system of utilization rainwater automatic water supplement |
| CN207760875U (en) * | 2017-12-14 | 2018-08-24 | 北京京诚泽宇能源环保工程技术有限公司 | A kind of drainage system of pipe gallery |
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| US9517946B2 (en) * | 2013-03-14 | 2016-12-13 | Catherine G. Lin-Hendel | Method and system for water reclamation, purification, and reuse for residential, commercial, and agricultural applications |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206289715U (en) * | 2016-10-21 | 2017-06-30 | 中国天辰工程有限公司 | A kind of trapped well system of utilization rainwater automatic water supplement |
| CN206279554U (en) * | 2016-12-02 | 2017-06-27 | 中冶京诚工程技术有限公司 | A kind of natural gas cabin of pipe gallery |
| CN207760875U (en) * | 2017-12-14 | 2018-08-24 | 北京京诚泽宇能源环保工程技术有限公司 | A kind of drainage system of pipe gallery |
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