CN106088157B - Eclipsed form arranges recirculated water concrete duct manhole shaft and its inspection method - Google Patents
Eclipsed form arranges recirculated water concrete duct manhole shaft and its inspection method Download PDFInfo
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- CN106088157B CN106088157B CN201610707459.4A CN201610707459A CN106088157B CN 106088157 B CN106088157 B CN 106088157B CN 201610707459 A CN201610707459 A CN 201610707459A CN 106088157 B CN106088157 B CN 106088157B
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- manhole
- drainage
- shaft
- circulating water
- water pipe
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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
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
-
- 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
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
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Abstract
The invention discloses a kind of eclipsed form arrangement recirculated water concrete duct manhole shaft and its inspection methods, it is connect by manhole pipe laying with two or more pieces circulating water pipe after manhole shaft passing through floors layer and main building backplane level, manhole shaft is blocked with circulating water pipe junction using cover plate for manhole；Manhole shaft includes inspection manhole platform, lifting appliance, inspection shaft channel, and the setting of inspection manhole platform increases 0.5m or more in off-lying sea highest water level, and manhole shaft bottom absolute altitude is lower than bottom circulating water pipe bottom absolute altitude.When compressor emergency shutdown needs to overhaul circulating water pipe; open the second drainage for overhaul valve; water in circulating water pipe enters catch pit by drainage pipeline, and the draining pump in catch pit carries out high liquid level according to the level value of setting automatically and opens pump, low liquid level termination of pumping, high high liquid level warning.The present invention solves the problems, such as existing manhole shaft position limitation, and when main building semi-underground type arrangement, still is able to meet maintenance requirement.
Description
Technical field
The present invention relates to manhole shaft research field in cyclic hydrostatic pressure hydraulic piping, in particular to a kind of eclipsed form arrangement is followed
Ring water coagulation soil pipe manhole inspection shaft and its inspection method.
Background technique
As generating set capacity is increasing, the especially increase of nuclear power unit capacity, required quantity of circulating water
Increasing, existing finished product pipe diameter is difficult to meet demand, and more and more power plant cycle waterpipes use cast in place reinforced bar
Concrete duct.Due to the limitation of arrangement condition, most cast-in-situ steel reinforced concrete pipelines use eclipsed form arrangement, pipe
Road pattern uses inner circle external square type.
According to design specification requirement, manhole shaft should be arranged in cyclic hydrostatic pressure hydraulic piping, with convenient to overhaul.For eclipsed form
Arrange cast-in-situ steel reinforced concrete manhole shaft, prior art is all made of every pipeline and a manhole shaft, ginseng is arranged
See that Fig. 1, manhole shaft 101 are arranged in the pipe head of circulating water pipe 102.Inspection shaft diameter is DN800mm, and section configuration is
Circle, rectangular inspection chamber is equipped with close at ground, and the square manhole of inspection chamber and ground junction 800mm × 800mm is above set
Cast iron flat.The program has the following disadvantages:
1) manhole shaft position is fixed, and can only be arranged in circulating water pipe end, is easily set with ground in main building
Standby arrangement mutually conflicts.
2) manhole shaft aperture is smaller, and circulating water pipeline buried depth is deeper, service personnel's upper and lower distance in inspection manhole
It is longer, and can not rest.
3) when the semi-underground arrangement of main building, it is full of water in manhole shaft, manhole shaft cover board, Wu Fajian can not be opened
It repairs, and service personnel can not confirm water level height in inspection manhole, there are security risks.
4) it must assure that below manhole shaft to be entire pipeline minimum point, recirculated water caliber can not be changed, lead to pipeline
End flow velocity is relatively low.
Summary of the invention
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency provide a kind of eclipsed form arrangement recirculated water
Concrete duct manhole shaft, the inspection shaft solve existing eclipsed form arrangement cast-in-situ steel reinforced concrete pipe manhole inspection shaft
The problem of position limits, and when main building semi-underground type arrangement, it still is able to meet maintenance requirement.
The shortcomings that another object of the present invention is to overcome the prior art and deficiency provide a kind of based on above-mentioned eclipsed form cloth
The inspection method of recirculated water concrete duct manhole shaft is set, this method can accurately detect pressure shape in circulating water pipeline
Condition ensures the safety of service personnel.
The purpose of the present invention is realized by the following technical solution: eclipsed form arranges the manhole inspection of recirculated water concrete duct
It is connect by manhole pipe laying with two or more pieces circulating water pipe after well, manhole shaft passing through floors layer and main building backplane level,
Manhole shaft is blocked with circulating water pipe junction using cover plate for manhole；Manhole shaft includes inspection manhole platform, rises
Equipment, inspection shaft channel are hung, the inspection manhole platform, which is arranged, increases 0.5m or more, the manhole inspection in off-lying sea highest water level
Shaft bottom absolute altitude is lower than bottom circulating water pipe bottom absolute altitude.The present invention is arranged by above structure, manhole shaft can be arranged
In any position of circulating water pipeline lowest part, avoid influencing other equipment arrangement.It is suitable for semi-underground powerhouse simultaneously, solves
Off-lying sea water level higher the problem of can not opening manhole shaft.
Preferably, half space is equipped in inspection shaft channel middle position.For personnel's bait convenient to overhaul.
Preferably, manhole shaft is blocked with circulating water pipe junction using flange manhole cover board.Guarantee unit just
Often when operation, the water in circulating water pipe will not be entered in manhole shaft.
Preferably, the cover plate for manhole bottom is equipped with a drainage system.
Further, the drainage system includes the first drainage for overhaul valve, pressure gauge, the second drainage for overhaul valve, draining
Pipeline, draining pump, liquid level detection device and control device, the cover plate for manhole be equipped with a protruded tube, the protruded tube one end with
The connection of circulating water pipe interior conduit, the first drainage for overhaul valve, pressure gauge, the second drainage for overhaul valve are arranged at the protruded tube
On, when the second drainage for overhaul valve is opened, the water in circulating water pipe flows into catchmenting for manhole shaft bottom by drainage pipeline
Hole；Draining pump is arranged in catch pit, and liquid level detection device is used to monitor the liquid level in catch pit；First drainage for overhaul
Valve, pressure gauge, the second drainage for overhaul valve, draining pump, liquid level detection device are connect with control device respectively.
Further, it is equipped with manhole in circulating water pipeline side, operating platform, the control dress is equipped at manhole
It sets and is connected with operating platform, or setting is on the operational platform.Consequently facilitating service personnel overhauls.
Preferably, the manhole shaft headroom dimensions length is in 3200~3700mm, and width is in 1200~1700mm.
Based on the inspection method of above-mentioned eclipsed form arrangement recirculated water concrete duct manhole shaft, comprising steps of
First drainage for overhaul valve is in normally open, and the second drainage for overhaul valve is in normally off, is monitored by pressure gauge
Hydraulic pressure in circulating water pipeline；
When compressor emergency shutdown needs to overhaul circulating water pipe, the second drainage for overhaul valve is opened, the water in circulating water pipe passes through row
Waterpipe enters catch pit, and the draining pump in catch pit carries out high liquid level according to the level value of setting automatically and opens pump, low liquid
Position termination of pumping, high high liquid level warning.
Preferably, once generating alarm signal, then the second drainage for overhaul valve is closed, draining pump is overhauled；
If draining pump is out of service, but gage pressure value is not zero, then closes the first drainage for overhaul valve and to second
Drainage for overhaul valve and pressure gauge are overhauled；
If draining pump is out of service and gage pressure value is zero, service personnel opens cover plate for manhole and enters recirculated water
It is overhauled in pipeline.
Preferably, the aperture of the second drainage for overhaul valve is automatically controlled according to gage pressure value.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) present invention may be arranged at any position of circulating water pipeline lowest part, can avoid influencing other equipment arrangement.
(2) present invention is suitable for semi-underground powerhouse, solves that off-lying sea water level is higher, can not open asking for manhole shaft
Topic.
(3) present invention by setting half space, solve circulating water pipe buried depth it is deeper when, service personnel can not stop halfway
The problem of breath.
(4) present invention has complete drainage system, can protect service personnel well.
(5) present invention can be effectively prevented draining service valve damage and led to not overhaul using double drainage for overhaul valve controls
The problem of.
Detailed description of the invention
Fig. 1 is the sectional view of manhole shaft in the prior art.
Fig. 2 is the present embodiment the schematic diagram of the section structure one.
Fig. 3 is the present embodiment the schematic diagram of the section structure two.
Fig. 4 is the structural schematic diagram in the present embodiment at drainage system.
In Fig. 2-4: 1-lifting appliance, 2-inspection manhole platforms, 3-inspection shaft channels, 4-floor layers, 5-main buildings
Backplane level, 6-circulating water pipes, 7-half spaces, 8-covers plate for manhole, 9-pressure gauges, the 10-the first drainage for overhaul valve, 11-
Manhole pipe laying, 12-operating platforms, 13-band shield cage ladders, 14-draining pumps, the 15-the second drainage for overhaul valve.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment 1
Referring to fig. 2,3, the present embodiment eclipsed form arranges recirculated water concrete duct manhole shaft, is suitable for two or more
The cast-in-situ steel reinforced concrete circulating water pipe of arranged superposed.This two or more pieces circulating water pipe shares a manhole shaft, people
It is connect by manhole pipe laying 11 with circulating water pipe 6 after hole inspection shaft passing through floors layer 4 and main building backplane level 5, wherein manhole is examined
Shaft bottom absolute altitude is looked into lower than bottom circulating water pipe bottom absolute altitude.Manhole shaft headroom size is about 3500mm × 1500mm.Manhole
Inspection shaft includes inspection manhole platform 2, lifting appliance 1, inspection shaft channel 3, and band shield cage ladder 13 is equipped in inspection shaft channel 3.
The inspection manhole platform 2, which is arranged, increases 0.5m or more in off-lying sea highest water level, external with during preventing circulating water pipeline from overhauling
Seawater enters main building.
In the present embodiment, half space 7, personnel's bait convenient to overhaul are equipped in manhole shaft.
In the present embodiment, manhole shaft is blocked with circulating water pipe junction using flange manhole cover board 8.
Referring to fig. 4, in the present embodiment, it is equipped with drainage system in cover plate for manhole bottom, drainage system includes the first maintenance row
Water valve 10, pressure gauge 9, the second drainage for overhaul valve 15, drainage pipeline, draining pump 14, liquid level detection device and control device, it is described
Cover plate for manhole is equipped with a protruded tube, which is connected to circulating water pipe interior conduit, the first drainage for overhaul valve, pressure
Power table, the second drainage for overhaul valve are arranged on the protruded tube, and when the second drainage for overhaul valve is opened, the water in circulating water pipe is logical
Cross the catch pit that drainage pipeline flows into manhole shaft bottom；Draining pump is arranged in catch pit, and liquid level detection device is for supervising
Survey the liquid level in catch pit；The first drainage for overhaul valve, pressure gauge, the second drainage for overhaul valve, draining pump, liquid level detection device
It is connect respectively with control device.
In the present embodiment, it is equipped with manhole in circulating water pipeline side, is equipped with operating platform 12, the control at manhole
Device is arranged on the operational platform.
Eclipsed form described in the present embodiment arranges the inspection method of recirculated water concrete duct manhole shaft, comprising steps of
1, when unit operates normally, due to the presence of cover plate for manhole, the water in circulating water pipeline will not enter manhole inspection
In well, inspection shaft can be kept to be in dry type state, the first drainage for overhaul valve is in normally open, and the second drainage for overhaul valve is in
Normally off monitors hydraulic pressure in circulating water pipeline by pressure gauge.
2, when compressor emergency shutdown needs to overhaul circulating water pipe, the second drainage for overhaul valve is opened, the water in circulating water pipe passes through
Drainage pipeline enters catch pit, and the draining pump in catch pit carries out high liquid level according to the level value of setting automatically and opens pump, low
Liquid level termination of pumping, high high liquid level warning；
Once generating alarm signal, then the second drainage for overhaul of quick closedown valve, cutting water flow overhauls draining pump；
If draining pump is out of service, but gage pressure value is not zero, then closes the first drainage for overhaul valve and to second
Drainage for overhaul valve and pressure gauge are overhauled；
If draining pump is out of service and gage pressure value is zero, service personnel opens cover plate for manhole and enters recirculated water
It is overhauled in pipeline.
When opening the second drainage for overhaul valve, the pressure value of pressure gauge can be read by control device, then according to pressure
Value automatically controls the aperture of the second drainage for overhaul valve.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (8)
1. eclipsed form arrange recirculated water concrete duct manhole shaft, which is characterized in that manhole shaft passing through floors layer and
It is connect by manhole pipe laying with two or more pieces circulating water pipe after main building backplane level, manhole shaft and circulating water pipe junction
It is blocked using cover plate for manhole；Manhole shaft includes inspection manhole platform, lifting appliance, inspection shaft channel, the maintenance
The setting of manhole platform increases 0.5m or more in off-lying sea highest water level, and manhole shaft bottom absolute altitude is lower than bottom circulating water pipe
Bottom absolute altitude；
The cover plate for manhole bottom is equipped with a drainage system, and the drainage system includes the first drainage for overhaul valve, pressure gauge, second
Drainage for overhaul valve, drainage pipeline, draining pump, liquid level detection device and control device, the cover plate for manhole are equipped with a protruded tube,
The protruded tube one end is connected to circulating water pipe interior conduit, and the first drainage for overhaul valve, pressure gauge, the second drainage for overhaul valve are all provided with
It sets on the protruded tube, when the second drainage for overhaul valve is opened, the water in circulating water pipe flows into manhole inspection by drainage pipeline
The catch pit of bottom；Draining pump is arranged in catch pit, and liquid level detection device is used to monitor the liquid level in catch pit；Described
One drainage for overhaul valve, pressure gauge, the second drainage for overhaul valve, draining pump, liquid level detection device are connect with control device respectively.
2. eclipsed form according to claim 1 arranges recirculated water concrete duct manhole shaft, which is characterized in that in institute
Inspection shaft channel middle position is stated equipped with half space.
3. eclipsed form according to claim 1 arranges recirculated water concrete duct manhole shaft, which is characterized in that manhole
Inspection shaft is blocked with circulating water pipe junction using flange manhole cover board.
4. eclipsed form according to claim 1 arranges recirculated water concrete duct manhole shaft, which is characterized in that following
Ring water pipe side is equipped with manhole, is equipped with operating platform at manhole, and the control device is connected with operating platform, or setting
On the operational platform.
5. eclipsed form according to claim 1 arranges recirculated water concrete duct manhole shaft, which is characterized in that described
Manhole shaft headroom dimensions length is in 3200~3700mm, and width is in 1200~1700mm.
6. the reviewing party based on any one of the claim 1-5 eclipsed form arrangement recirculated water concrete duct manhole shaft
Method, which is characterized in that comprising steps of
First drainage for overhaul valve is in normally open, and the second drainage for overhaul valve is in normally off, is monitored and is recycled by pressure gauge
Water inner pipe water pressure；
When compressor emergency shutdown needs to overhaul circulating water pipe, the second drainage for overhaul valve is opened, the water in circulating water pipe passes through drainpipe
Road enters catch pit, and the draining pump in catch pit carries out that high liquid level opens pump, low liquid level is stopped according to the level value of setting automatically
Pump, high high liquid level warning.
7. inspection method according to claim 6, which is characterized in that once generating alarm signal, then close the second maintenance
Drain valve overhauls draining pump；
If draining pump is out of service, but gage pressure value is not zero, then closes the first drainage for overhaul valve and overhaul to second
Drain valve and pressure gauge are overhauled；
If draining pump is out of service and gage pressure value is zero, service personnel opens cover plate for manhole and enters in circulating water pipe
It is overhauled.
8. inspection method according to claim 6, which is characterized in that the aperture of the second drainage for overhaul valve is according to pressure
Gauge pressure values automatically control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707459.4A CN106088157B (en) | 2016-08-23 | 2016-08-23 | Eclipsed form arranges recirculated water concrete duct manhole shaft and its inspection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610707459.4A CN106088157B (en) | 2016-08-23 | 2016-08-23 | Eclipsed form arranges recirculated water concrete duct manhole shaft and its inspection method |
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| Publication Number | Publication Date |
|---|---|
| CN106088157A CN106088157A (en) | 2016-11-09 |
| CN106088157B true CN106088157B (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610707459.4A Active CN106088157B (en) | 2016-08-23 | 2016-08-23 | Eclipsed form arranges recirculated water concrete duct manhole shaft and its inspection method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219223B (en) * | 2019-07-01 | 2021-04-02 | 广东银辉建设有限公司 | Municipal drainage structure |
| CN115075298B (en) * | 2022-08-03 | 2023-11-24 | 济南市市政工程设计研究院（集团）有限责任公司 | Municipal road comprehensive inspection well and maintenance method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1665699A (en) * | 1998-11-03 | 2000-05-22 | Magnus Holdings Group Limited | A safety device for a well |
| CN202755380U (en) * | 2012-09-06 | 2013-02-27 | 上海市城市建设设计研究总院 | Tee joint working well for long-distance large-pipe-diameter underground water delivery main pipe system |
| CN204551702U (en) * | 2015-04-07 | 2015-08-12 | 中国电建集团贵阳勘测设计研究院有限公司 | Sump pit structure |
| CN205975686U (en) * | 2016-08-23 | 2017-02-22 | 中国能源建设集团广东省电力设计研究院有限公司 | Circulating water concrete duct inspection manhole is arranged to eclipsed form |
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| CN106088157A (en) | 2016-11-09 |
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