CN201598670U

CN201598670U - Top plate structure

Info

Publication number: CN201598670U
Application number: CN2010201000735U
Authority: CN
Inventors: 金彪; 王锡清; 姚枝良; 臧海龙; 刘东旭
Original assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2010-01-22
Filing date: 2010-01-22
Publication date: 2010-10-06
Anticipated expiration: 2020-01-22

Abstract

The utility model discloses a top plate structure which comprises a top plate body and an angle iron for sealing, and is characterized in that: a U-shaped groove is arranged on the pipe pass-through position of the top plate body, the notch of the U-shaped groove is provided with an angle iron for mounting a water pump hoist guiding rail. When in use, a pipeline vertically passes through the top plate via the U-shaped hole, the pipeline is avoided from using an elbow to avoid the a top plate beam, the elbow is not needed, the head loss is reduced and the water flows becomes smoother; the water flow turning is avoided due to the additional elbow, so as to cause the vibration of the water pump; meanwhile, compared with the preset hole structure in prior art, the top plate structure is more convenient on the aspects of pipeline mounting and replacement.

Description

A kind of top board structure

Technical field:

The utility model relates to the technical field of municipal engineering, is a kind of top board structure that water pump pipeline passes through that is used for specifically.

Background technology:

In the municipal engineering of present China, especially various pump station engineerings, the pipeline that often has water pump passes through the situation of top board.A kind of situation of routine is the close pool wall of pipeline, and the opposite side of pipeline is opened manhole, is used to lift by crane pump equipment etc.General processing mode is, the place establishes structural beams at manhole, because guide rod is very little with the pipeline parallel distance of water pump, so pipeline will utilize two 45 ° of elbows to avoid structural beams, and pipeline passes through top board place reservation circular hole.(referring to Fig. 1, Fig. 2)

Because the general flow velocity of water pump pipeline is very big, therefore the elbow that increases can increase the head loss of water pump greatly, causes the waste on the pump head, increases head loss, is unfavorable for energy-conservation;

And behind the increase elbow, the current variation can cause Analysis of Pipe Vibrations, causes the water pump vibration, causes the damage of water pump in the course of time.

Summary of the invention:

The purpose of this utility model provides a kind of top board structure, promptly reduce the size of preformed hole and bore edges cover plate in the conventional way, can guarantee simultaneously the form of structure of structural safety, convenient construction again, it can overcome in the prior art, and elbow increases head loss on the pipeline, it is energy-conservation to be unfavorable for, current change the some shortcomings that cause the water pump vibration simultaneously.

To achieve these goals, the technical solution of the utility model is: a kind of top board structure, and it mainly comprises top board plate body and notch angle steel, it is characterized in that: the position that pipeline passes through on the plate body is provided with U type groove, and the notch place of U type groove is provided with angle steel.

During use, water pump pipeline vertically passes through the U-shaped hole of top board in the utility model, can avoid pipeline to utilize elbow to avoid the top board beam, and elbow need not be set, and reduces head loss, makes current more smooth and easy; Reducing simultaneously owing to increasing elbow causes the current break-in to cause the vibration of water pump; Simultaneously, in the installation of pipeline and later replacing with, the utility model structure is all convenient than conventional method.

Description of drawings:

Fig. 1 passes through the section reference diagram of top board for the prior art pipeline

Fig. 2 passes through the plane reference diagram of top board for the prior art pipeline

Fig. 3 passes through the sectional view of top board for the utility model pipeline

Fig. 4 passes through the plan view of top board for the utility model pipeline

Fig. 5 is a structural representation of the present utility model

Fig. 6 is an another structural representation of the present utility model

The specific embodiment:

Below in conjunction with accompanying drawing and example the utility model is further described.

The utility model mainly comprises top board plate body 1 and seal with angle steel 2 that its difference with the prior art is: be used for the position that pipeline passes through on the plate body and be provided with U type groove 3, the notch place of U type groove is provided with angle steel, is used to install water pump lifting guide rail.Angle steel is straight angle steel or arc angle steel, and it is equal with the side with concrete roof that angle steel is installed the back.The notch radius of U type groove is greater than the radius of pipeline.

During use, during the vertical passing through floors of pipeline 4, open U-lag in a submarginal side, the pre-buried angle steel of notch, thus form a U-shaped hole.The radius of U-shaped hole arch section is greater than the pipeline radius, and angle steel can adopt straight angle steel or arc angle steel according to the civil engineering form.

U-lag of the present utility model is arranged on by the top board service hatch during use, can be used as one side of service hatch after angle steel is fixing, is used to install the guide rail of lifting water pump.Pipeline (can't be blue) can directly pass the U-shaped hole when installing; After also can earlier pipeline (flange is arranged) being passed U-lag, seal notch with angle steel again.This structure can avoid the pipeline road to utilize the form of elbow to walk around the top board beam, elbow need not be set, reduce head loss, avoid causing the current break-in to cause the vibration of water pump, reduce the difficulty of top board structure design and the complexity in the installation simultaneously owing to increasing elbow.

Illustrate energy-saving benefit of the present utility model below:

The head loss of pipeline is made up of frictional head loss and local head loss, because straight length is generally shorter, so frictional head loss can be ignored, only need consider local head loss.If the outlet of water pump is DN400, pipeline is DN600, and the local losses coefficient of each pipe fitting is as shown in the table:

Annotate: notebook data is selected from " water supply and drainage design manual " first.

When adopting conventional structure, the head loss of pipeline

When adopting this energy-saving structure, the head loss of pipeline

So adopt the fractional energy savings of the utility model structure to be

η = \frac{h_{1} - h_{2}}{h_{1}} \times % = \frac{3.24 - 2.22}{3.24} \times % = 31.5 %

As above as can be known, adopt the utility model structure can reduce the head loss of pipeline greatly, thereby reduce the lift of water pump, cut down the consumption of energy, realize purpose of energy saving.

Claims

1. top board structure, it mainly comprises the top board plate body and seals uses angle steel, it is characterized in that: be used for the position that pipeline passes through on the plate body and be provided with U type groove, the notch place of U type groove is provided with angle steel.

2. a kind of top board structure as claimed in claim 1 is characterized in that: angle steel is straight angle steel or arc angle steel.

3. a kind of top board structure as claimed in claim 1 is characterized in that: the notch radius of U type groove is greater than the radius of pipeline.