6results about How to "Reduce drainage" patented technology

This invention discloses a composite seepage control structure and method for non-drainage sections of tunnels with a head of 50m or more, comprising: an external surrounding rock structure, a consolidation grouting ring, a pressure-bearing lining, transverse drainage components, and a longitudinal pipe assembly; a pressure-bearing lining with a thickness of 40cm or more is installed on the inner wall of the tunnel; the external surrounding rock structure is located outside the pressure-bearing lining; and the consolidation grouting ring is installed outside the external surrounding rock structure. By setting different seepage-proof consolidation grouting rings outside the lining according to the magnitude of the external water load, the drainage volume and external water load are reduced, thereby achieving the purpose of reducing the external water load acting on the tunnel lining structure and avoiding water pollution caused by external water seepage.

The utility model belongs to water meter box technical field especially has a kind of water meter box with anti-blocking drain hole, including water meter box, the same main water pipe is fixedly connected on the front and rear side inner wall of water meter box, the side fixed communication of main water pipe has a plurality of branch pipes, water meter body is provided on branch pipe, the bottom fixed communication of one side of water meter box has drain pipe. The utility model structure design is reasonable, by setting up the anti-blocking drainage mechanism of protective cover, filter drum and diversion bucket, the hierarchical blocking of sundries can be realized, the drain hole of protective cover can block big particle sundries such as fallen leaves, gravel, the filter screen of filter drum can filter small particle sundries such as silt, fine chippings, effectively avoid different particle size sundries to block drain pipe, ensure that accumulated water is discharged quickly, by fixed sealing assembly, not only beneficial to disassembly cleaning replacement, improve the stability and sealing property when installing simultaneously, avoid water inlet.

This utility model relates to a drainage structure for substation transmission lines, aiming to solve the technical problem that current drainage structures mostly use filter screens to prevent garbage from entering the drainage ditch, which may lead to excessive garbage on the top of the filter screen, resulting in reduced drainage efficiency and requiring manual cleaning. The structure includes: a drainage pipe with a filter screen installed at the top inlet; and a cleaning mechanism including: turbine blades installed inside the drainage pipe, one end of which is fixedly connected to a rotating shaft. This utility model uses water flow to drive the turbine blades to rotate, which in turn drives a drive wheel to rotate synchronously. An outer baffle periodically actuates an elastic plate to generate vibration, which is transmitted to the filter screen surface, causing accumulated leaves, dust, and other impurities to fall off with the water flow, avoiding regular manual cleaning and solving the problem of reduced drainage efficiency caused by excessive garbage in existing filter screens.

The present application relates to large industrial open cycle cooling water system, specifically to steam recovery device, circulating cooling system and circulating cooling method. Wherein the steam recovery device of the present application, including: at least one condenser pipe group, the condenser pipe group has condenser pipe, the surface of the condenser pipe is provided with fixedly connected heat exchange fin;Buffer cold water tank, the buffer cold water tank has water inlet pipe, the buffer cold water tank is communicated with the water inlet end of the condenser pipe by first pipeline;The first pipeline is communicated with first cooling water supply pump;The water inlet pipe has first valve, and the first pipeline has second valve;Raw water pool, the water outlet end of the condenser pipe is communicated with the raw water pool by second pipeline;Rotary centrifugal separation layer, the rotary centrifugal separation layer has at least two cyclones, each the cyclone has flow guide pipe respectively;The rotary centrifugal separation layer is vertically above the condenser pipe group.

This invention discloses a multifunctional gas storage tank, comprising a tank body, a hollow body, a float, several guide rods, a sleeve, a water outlet pipe, a water outlet, a cylindrical body, a water suction body, a sealing ring, and a baffle. The upper end of the hollow body is connected to the lower end of the tank body via a connecting pipe. A guide rod is provided inside the hollow body, and a slidable float is provided on the guide rod. A sleeve is provided at the lower end of the float, and the lower end of the sleeve is in close contact with the inner side of the lower end of the hollow body. A water outlet pipe is located inside the sleeve at the lower end of the hollow body, and a water outlet is provided on the water outlet pipe inside the hollow body. A cylindrical body is connected to the water outlet pipe at the lower end of the water outlet pipe, and a water suction body is provided inside the cylindrical body. A sealing ring is provided at the upper end of the water suction body for sealing with the cylindrical body. A baffle is provided inside the lower end of the cylindrical body, and the baffle has several through holes. Compared with the prior art, this invention can improve reliability and reduce usage costs.

This invention discloses a hinged expansion joint between structural units of a tunnel traversing an active fracture and its construction procedure. The hinged expansion joint includes: a pre-reinforced and initial support structure, comprising a curtain grouting layer, a radial grouting layer, and a steel fiber reinforced concrete initial support layer; a W-shaped waterstop embedded in the lining on both sides; a steel pipe polyurethane support structure located inside the W-shaped waterstop; a steel-reinforced foamed concrete sealing structure located inside the steel pipe polyurethane support structure; and a drainable, embedded Ω-shaped waterstop located at the innermost side of the expansion joint. This invention, through multi-layered waterproofing and support synergy, can adapt to large deformations in active fractures, improve the reliability of high-head waterproofing, and achieve proactive control of leakage during operation.