CN2187247Y

CN2187247Y - Coupling stub for buterfly bamper

Info

Publication number: CN2187247Y
Application number: CN 94225032
Authority: CN
Inventors: 刘树良; 关宝杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-07
Filing date: 1994-01-07
Publication date: 1995-01-11
Anticipated expiration: 2004-01-07

Abstract

The utility model provides a coupling stub for butterfly bampers, which is used for installing butterfly bampers on water feeding pipes. The utility model comprises a coupling stub whose two ends are provided with flanges, wherein, the end surface of one of the flanges is an inclined plane. When the butterfly bumper is installed, the two sides of the butterfly bumper are respectively provided with a pair of the coupling stubs for butterfly bampers, the inclined plane of each pair of the coupling stubs for butterfly bampers is correspondingly connected with each other, and the two vertical end surfaces of the utility model are separately connected with the butterfly bumper and the water feeding pipes. When the utility model is repaired and replaced, a pair of the coupling stubs for butterfly bampers whose inclined planes are correspondingly connected are opened, and the butterfly bumper and the coupling stub for butterfly bampers, which is connected with the two sides of the butterfly bumper, can be together taken off. Thereby, the butterfly bumper can be conveniently dismounted, and the repair and the replacement can be conveniently carried out.

Description

Coupling stub for buterfly bamper

The utility model relates to a kind of water supply pipe annex, and specifically a kind of used butterfly valve of butterfly valve of installing on feedwater piping connects short tube.

Butterfly valve opens and closes flexibly, cuts out advantage such as tight, that volume is little, in light weight and is widely used in the feedwater piping owing to having than gate valve.But, facts have proved of many using processs: butterfly valve the installation of pipeline, especially the maintenance in exist some problems really, be that butterfly valve is subjected to its structural limitations, when being overhauled, it its whole valve body must be unloaded from pipeline, because its two ends are connected by flange, bolton with pipeline, thereby often very difficult when overhauling it is unloaded smoothly.In order to solve this difficult problem, several years ago design office has adopted the supporting connection of expansion bend to the installation of butterfly valve, but the use practice process in several years proves: butterfly valve generally needs time of 3-8 from being installed to the maintenance cycle, and expansion bend in pipeline owing to reasons such as corrosion often the short period promptly become rusty extremely, lose its Telescopic.Thereby be difficult to be used.In existing construction, generally in butterfly valve shaft, place a cock wheel in order to replace expansion bend, when the maintain and replace butterfly valve, have to adopt gas welding method roastingization cock wheel lead mouth like this, again valve body is taken off after taking away cock wheel.But existing well chamber standard drawing, the inwall of Qi Jing chamber wall and cock wheel are at a distance of too near, the roasting plumbous mouthful of part well chamber wall of just must dismantling of cock wheel of opening, can unload butterfly valve by mobile cock wheel with this, most of butterfly valve shaft chamber all is located under the asphalt surface this necessary excavation road surface of making use of momentum, cause a series of challenges such as traffic municipal engineering, brought great difficulty for the maintenance and the replacing work of butterfly valve, the also corresponding engineering cost that improved has prolonged the duration simultaneously.

At the problems referred to above, the purpose of this utility model provides a kind of used butterfly valve of I﹠M butterfly valve of being convenient to and connects short tube.

The purpose of this utility model is achieved in that it comprises that two ends have the short tube of flange plate, wherein an end the end face of flanged dish be the plane of inclination.The inclination angle of its plane of inclination and short tube axis is 15 °-55 °.When butterfly valve is installed, respectively increase a pair of above-mentioned butterfly valve in the both sides of butterfly valve and connect short tube, each is bound up to the plane of inclination correspondence that butterfly valve connects short tube, its two perpendicular end surface connects mutually with butterfly valve and feedwater piping respectively, when maintain and replace, the a pair of butterfly valve connection short tube that the plane of inclination correspondence is bound up is opened, butterfly valve can be connect short tube together with the butterfly valve that connects its both sides and take off simultaneously.

The utility model has the advantages that: connection short tube one end that connects butterfly valve is the plane of inclination, makes it to bring great convenience to the I﹠M of butterfly valve, and need not to destroy asphalt surface, both can reduce engineering cost, can shorten the installation, maintenance duration again.

Below in conjunction with accompanying drawing this reality is done novel being explained.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a butterfly valve mounting structure schematic representation.

By accompanying drawing as can be known, two ends have the short tube 2 of flange plate 1,3, wherein an end the end face of flanged dish 1 be the plane of inclination, inclination alpha between this plane of inclination and short tube 2 axis is 15 °-55 °, the big more installation of inclined angle alpha Vietnamese side just, the more little difficulty of processing of inclined angle alpha is low more, and the big more difficulty of processing of inclined angle alpha is big more, and it is best get inclined angle alpha being 45 ° for this reason.

(see figure 2) when butterfly valve 5 is installed, its both sides respectively connect a pair of butterfly valve nozzle stub 2a, 2b and 2c, 2d, butterfly valve connects the plane of inclination of short tube 2a and 2b, the corresponding connection of 2c with the plane of inclination of 2b, the perpendicular end surface of 2a and 2d connects mutually with feedwater piping 4 and 6 respectively, the perpendicular end surface of 2b and 2c connects mutually with butterfly valve 5 both sides respectively, when butterfly valve 5 maintain and replaces, to connect short tube 2a and 2b, 2c and 2d opens, butterfly valve 5 can be taken off simultaneously with connection short tube 2b, 2c then, thereby easily butterfly valve 5 is unloaded, repair or replace.

Claims

1, a kind of butterfly valve connects short tube, and it is characterized in that: it comprises that two ends have the short tube of flange plate, wherein an end the end face of flanged dish be the plane of inclination.

2, butterfly valve according to claim 1 connects short tube, and the tilt angle that it is characterized in that described short tube one end plane of inclination and short tube axis is 15 °-55 °.