CN203604905U - Combined water supply pipeline manhole cover plate with fairing and vent valve - Google Patents

Abstract

The utility model relates to a combined water supply pipeline manhole cover plate with a fairing cover and an exhaust valve, which includes a cover plate body connected to the water supply main manhole, a through hole is arranged in the center of the cover plate body, and a short pipe passes through the cover plate The through hole of the main body and the lower end of the short pipe located in the manhole are provided with air holes, the lower end of the short pipe is connected with a fairing plate, the fairing plate covers the opening at the manhole of the water supply main pipe, and the upper end of the short pipe passes through the The blue is connected to the maintenance valve and the exhaust valve in turn. Through structural optimization and innovation, the utility model effectively realizes the function of saving energy and reducing consumption for the water delivery system. The whole device has a simple structure, is easy to process, and has strong practicability. Suitable for long-distance water pipelines.

Description

Combined water supply pipe manhole cover with fairing and exhaust valve

technical field

The utility model relates to a water supply pipeline manhole cover plate, in particular to a combined water supply pipeline manhole cover plate with a fairing cover and an exhaust valve.

technical background

Water pipeline is a common part of municipal water supply projects. In order to ensure its normal operation and maintenance needs, auxiliary structures such as valve wells, exhaust wells, and drainage wells should generally be installed on water pipelines. For large-diameter pipelines (usually DN800 Above) for internal maintenance problems, maintenance manholes must be set at a certain distance.

The above-mentioned auxiliary facilities play an important and indispensable role in ensuring the normal operation of the water delivery pipeline, but at the same time, they will also affect the flow state of the water flow in the pipeline, resulting in local head loss, thereby increasing the energy consumption of the water delivery system.

With the country's increasing energy-saving requirements, various energy-saving and environmentally-friendly materials and equipment emerge in an endless stream. The development of energy-saving technology for water pipelines mainly focuses on pipe material innovation, but there are very few energy-saving technology innovations for pipeline ancillary facilities. At the same time, manholes and exhaust valves are usually set separately in water delivery projects, resulting in a large number of openings in the water delivery main, a large loss of water head, and a high number of corresponding structures and civil engineering investment.

Contents of the invention

The technical problem to be solved by the utility model is to optimize the hydraulic conditions for the maintenance manhole of the large-diameter water pipeline, increase the rectification function, and combine the exhaust valve with the manhole to reduce the number of openings in the main pipe and reduce the loss of water head , to reduce the energy consumption of the water delivery system.

Aiming at the above technical problems, the utility model adopts the following technical proposals. The manhole cover plate of the combined water supply pipeline with a fairing and an exhaust valve includes a cover plate body connected to the manhole of the water supply main pipe. The short pipe passes through the through hole of the cover plate body and the lower end of the short pipe is located in the manhole. There is an air hole. The lower end of the short pipe is connected with a fairing plate, and the fairing plate covers the opening at the water supply main manhole. The upper end of the short pipe is connected to the maintenance valve and the exhaust valve in turn through the flange.

The arc surface of the fairing is the same as the arc surface of the inner wall of the water supply main pipe, and the outer diameter of the fairing plate is slightly smaller than the inner diameter of the manhole.

The utility model has the advantages of: through structural optimization and innovation, the function of energy saving and consumption reduction for the water delivery system can be effectively realized, the whole device has a simple structure, is easy to process, has strong practicability, and can be applied to various large-diameter pipelines for water supply Engineering, especially for long-distance water pipelines.

Description of drawings

Fig. 1 is the front view of structure of the present utility model.

Fig. 2 is a side view of the utility model structure.

In the figure: 1. Cover plate body, 2. Water supply main pipe, 3. Fairing cover plate, 4. Exhaust valve, 5. Inspection valve, 6. Short pipe, 7. Flange, 8. Air hole.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. Referring to Fig. 1 and Fig. 2, the manhole cover plate of the combined water supply pipeline with a fairing and an exhaust valve includes a cover plate body 1 connected to the manhole of the water supply main pipe 2, and the center of the cover plate body 1 is provided with a through hole, short The pipe 6 passes through the through hole of the cover plate body 1 and the lower end of the short pipe 6 located in the manhole is provided with an air hole 8, and the lower end of the short pipe 6 is connected with a fairing plate 3, and the fairing plate 3 is covered on the water supply main pipe 2 The opening at the manhole, the upper end of the short pipe 6 is connected to the maintenance valve 5 and the exhaust valve 4 through the flange 7 in turn.

The arc surface of the fairing 3 is the same as the arc surface of the inner wall of the water supply main pipe 2, and the outer diameter of the fairing plate 3 is slightly smaller than the inner diameter of the manhole.

Embodiment: The combined water supply pipeline manhole cover plate with fairing cover and exhaust valve of the utility model is to add a fairing cover plate 3 with the same shape as the inner wall arc surface of the water supply main pipe 2 at the opening of the water supply main pipe 2 of the ordinary manhole. , and the fairing plate 3 and the manhole cover body 1 are welded into a whole through a short steel tube 6 . After the manhole fairing plate 3 is installed, when the water supply pipeline is running normally, the outer wall of the main pipeline at the manhole is basically continuous, effectively maintaining the stable flow state of the water flow in the pipeline, and eliminating the local head loss caused by ordinary manholes. During maintenance, the cover plate body 1 is opened together with the fairing plate 3, which does not affect personnel entering the pipeline for maintenance.

The manhole fairing is combined with the exhaust valve 4 to form an assembly. On the basis of the fairing plate 3, the short steel pipe 6 is passed through the through hole provided in the center of the manhole cover body 1, and is sequentially connected and repaired through the flange 7. The valve 5 and the exhaust valve 4 form a functional combination of the manhole and the exhaust valve 4. The utility model further reduces the number of openings in the main pipe and reduces the water head loss of the water delivery system while reducing the civil construction investment of the structure.

Claims (2)

1. with the combination feedwater piping cover plate for manhole of cowling and outlet valve, it is characterized in that, the cover board body central authorities that are connected with service main's manhole place are provided with through hole, the lower end body that short tube is positioned at manhole through the through hole of cover board body and short tube offers pore, the lower end of short tube is connected with rectification cover plate, rectification cover plate is placed on the perforate at service main's manhole place, and the upper end of short tube connects maintenance valve and outlet valve successively by flange.

2. the combination feedwater piping cover plate for manhole with cowling and outlet valve as claimed in claim 1, is characterized in that, the cambered surface of described cowling is identical with service main's inwall cambered surface, and the outer circumference diameter of rectification cover plate is slightly less than manhole internal diameter.

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