CN2799999Y

CN2799999Y - Flow distribution plate

Info

Publication number: CN2799999Y
Application number: CN 200520101869
Authority: CN
Inventors: 沈新荣
Original assignee: Individual
Current assignee: Hangzhou Zheda Technology Co Ltd
Priority date: 2005-04-28
Filing date: 2005-04-28
Publication date: 2006-07-26
Anticipated expiration: 2015-04-28

Abstract

The utility model provides a flow distribution plate. Two sets of flow distribution plates are symmetrically arranged on a valve plate of a universal butterfly valve, and thus, an electric regulating butterfly valve to have a regulating characteristic of equal percent. The utility model is realized through the technical scheme that the flow distribution plate is a U-shaped structure, and is composed of two wing plates and a fixed plate; flow distribution holes which are especially designed are arranged on the wing plates. The flow distribution holes which are especially designed and are arranged on the wing plates of the flow distribution plate can be designed into circular holes, or square holes or elliptical holes and the number of the flow distribution holes is at least one under the condition of ensuring same flow capacity. The utility model has the advantages that the design structure that two sets of flow distribution plates are symmetrically arranged on both side of a butterfly plate of a standard butterfly valve is used, the integral electric regulating butterfly valve is formed and thus the integral electric regulating butterfly valve has the regulating characteristic of the equal percent.

Description

Port plate

Technical field

The utility model relates to the control valve field that is applied to various water systems.More particularly, the utility model relates to a kind of accessory on the motorized adjustment butterfly valve that is used for various water systems.

Background technique

Advantages such as electric butterfly valve is the modal a kind of control valves of various water systems, and butterfly valve has simple in structure, and easy for installation, through-current capability is big and being widely used in the various water systems.

The various electric butterfly valve control characteristics of generally using are very poor at present, can only be applied to the occasion of some switch controls.When being applied to regulate control, the butterfly plate of butterfly valve is opened to 60 ° and has almost lost regulatory function later on, and this makes the interior in a lot of fields application of electric butterfly valve be restricted.

In the vehicular central air-conditioning system with hot and cold water, the adjusting of coil heat exchanger heat exchange quantity is to realize by the size that electric control valve changes water flow.And traditional analog amount electric butterfly valve is applied to have following phenomenon when the heat exchange of water system is controlled: flow coefficient is generally bigger than normal, regulates output characteristics difference and motorized adjustment butterfly valve and will lose adjusting and control ability after a certain aperture; The non-equal percentage curve of the control characteristic of flow and aperture, the control curve of valve opening and actual heat output is seriously non-linear; When any analog amount motorized adjustment butterfly valve in the fluid pipe network system is in full-gear or during near standard-sized sheet, can causes the hydraulic misadjustment of system.

Theoretical calculation and engineering practical application show to have only and adopt the electric control valve with equal percent regulating characteristic, could obtain high-quality heat exchange control, reduce system energy consumption, reduce the pipe network noise.

Present known a kind of motorized adjustment butterfly valve that control characteristic port plate and that have equal percentage is housed of also not finding.

The model utility content

Main purpose of the present utility model is to overcome deficiency of the prior art, and a kind of port plate is provided, and is installed on the general butterfly valve plate by symmetry, makes the motorized adjustment butterfly valve have equal percent regulating characteristic.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A kind of port plate is characterized in that, port plate is the U-shaped structure, is made up of two blocks of wing plates and a fixed plate; Have the assignment hole of particular design on the wing plate.

The assignment hole of the particular design of offering on the wing plate of described port plate can be designed to circle or square hole or elliptical aperture, and the quantity of assignment hole is at least 1 under the condition that guarantees identical negotiability.

Two groups of port plates are installed in the both sides that general electric is regulated the butterfly plate of butterfly valve symmetrically by connecting screw, with the form a whole adjusting valve plate of form of butterfly plate, the combination of the area of the wing plate by port plate and designed assignment hole area can be adjusted the control characteristic and the through-current capability of electric butterfly valve.

The wing plate of described port plate and fixed plate can be bent into the U type by integral body, also can be welded into the U type.

Compared with prior art, the beneficial effects of the utility model are:

1, model utility adopts the project organization that two groups of port plates are installed on the butterfly plate bilateral symmetry ground of standard butterfly valve, constitute incorporate motorized adjustment butterfly valve, make its control characteristic, and the butterfly valve of same diameter can obtain different valve flow nominal values (Kvs) with equal percentage;

2, the valve flow nominal value (Kvs) of motorized adjustment butterfly valve also can be consistent with the universal adjusting seat valve of same size, and the common butterfly valve of same size can obtain the flow coefficient of different size by the port plate that disposes different flow patterns, uses very flexible;

3, the flowing state with the port plate of a plurality of assignment holes design can obviously improvement modulating valve of symplex structure, stream is more orderly in making, can significantly reduce or avoid the physical action such as " flash distillation ", " cavitation " of hot fluid, prolonged the working life of regulating valve, reduce the pipe network hydrodynamic noise, can also reduce the opplied moment and the trimming moment of angle stroke electric actuator simultaneously;

Description of drawings

Fig. 1 is that the utility model is installed in the structural representation on the butterfly valve

Fig. 2 is equipped with the motorized adjustment butterfly valve of port plate and the structural representation of adpting flange assembly among Fig. 1

Fig. 3 is the main pseudosection of port plate among Fig. 1

Fig. 4 is the plan view of port plate among Fig. 1

Fig. 5 is the plane outspread drawing of port plate among Fig. 1

Fig. 6 is traditional butterfly valve regulating characteristic curve figure

Fig. 7 is the curve fitting figure that butterfly valve dimensionless experimental result of the present utility model is installed

The reference character of each parts is among the figure:

1 jiao of stroke electric actuator, 2 rotatingshafts, 3 port plates, 4 assignment holes, 5 butterfly plates, 6 butterfly valve bodies, 7 butterfly valve assemblies, 8 connecting screws, 9 wing plates, 10 fixed plates.

Embodiment

With reference to figures 1 through 5, will be described in detail the utility model below.

Attached Fig. 1 and 2 provides a kind of motorized adjustment butterfly valve that port plate is housed, and comprises angle stroke electric actuator 1, rotatingshaft 2, port plate 3, butterfly plate 5, butterfly valve body 6, butterfly valve assembly 7 and connecting screw 8; Wherein two groups of port plates 3 are installed in the both sides of butterfly plate 5 symmetrically by connecting screw 8, with the form a whole adjusting valve plate of form of butterfly plate; The power unit of angle stroke electric actuator 1 directly is connected on the rotatingshaft 2, drive the adjusting valve plate of forming by butterfly plate 5 and port plate 3 by rotatingshaft 2, but angle stroke electric actuator 1 adopts the universal product of acceptance criteria analog amount control signal, aperture in order to the modulating valve slab integral: 0 °～90 °, butterfly valve assembly 7 is used for fixing angle stroke electric actuator 1 and sealed rotational axle 2, and the other end of rotatingshaft 2 directly connects the adjusting valve plate.

By accompanying

drawing

3,4 and 5, described port plate 3 is the U-shaped structure, is made up of two blocks of wing plates 9 and a fixed plate 10; Have the assignment hole 4 of particular design on the wing plate 9.

The wing plate 9 of described port plate 3 and fixed plate 10 can be bent into the U type by integral body, also can be welded into the U type.

The assignment hole 4 of the particular design of offering on the wing plate 9 of described port plate 3 can be designed to circle or square hole or elliptical aperture, and present embodiment is designed to circular port; And the quantity of assignment hole 4 is at least 1 under the condition that guarantees identical negotiability, present embodiment is designed to 3.

The combination of area of foil by port plate 3 and designed assignment hole 4 areas can be adjusted the control characteristic and the through-current capability of butterfly valve.Before 45 ° of its apertures of motorized adjustment butterfly valve of integrated assembling moulding, the circulating resistance at modulating valve two ends is mainly worked by the valve plate of butterfly valve; But after 45 ° of the motorized adjustment butterfly valve openings of integrated assembling moulding, the circulating resistance at its two ends is mainly worked by the assignment hole 4 on two groups of port plates 3, after two groups of port plate 3 synthesis of the valve plate of butterfly valve and band assignment hole, the flow aperture curve of motorized adjustment butterfly valve is continuous.

Contrast accompanying drawing 6 and 7 is measured the back by curve fitting by experiment at the adjusting butterfly valve of certain specific flow pattern port plate, finds that this motorized adjustment butterfly valve has the control characteristic of equal percentage.

At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged, as:

(1) changes the assignment hole area and the hole number of particular design, equate, also can be made into symmetry and a plurality of circular holes that equate up and down or the composite design of square hole up and down as long as guarantee flow area.

(2), can also obtain a kind of motorized adjustment butterfly valve, and the butterfly valve of same diameter can obtain different valve flow nominals (Kvs) with linear adjustment characteristic by the combination of area of foil and assignment hole area.

All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.

Claims

1, a kind of port plate is characterized in that, port plate (3) is the U-shaped structure, is made up of two blocks of wing plates (9) and a fixed plate (10); Have the assignment hole (4) of particular design on the wing plate (9).

2, according to the described a kind of port plate of claim 1, it is characterized in that, the assignment hole (4) of the particular design of offering on the wing plate (9) of described port plate (3) can be designed to circle or square hole or elliptical aperture, and the quantity of assignment hole (4) is at least 1 under the condition that guarantees identical negotiability.

3, according to claim 1 or 2 described a kind of port plates, it is characterized in that, two groups of port plates (3) are installed in the both sides that general electric is regulated the butterfly plate (5) of butterfly valve symmetrically by connecting screw (8), with the form a whole adjusting valve plate of form of butterfly plate (5), the combination of the area of the wing plate (9) by port plate (3) and designed assignment hole (4) area can be adjusted the control characteristic and the through-current capability of electric butterfly valve.

According to claim 1 or 2 described a kind of port plates, it is characterized in that 4, the wing plate (9) and the fixed plate (10) of described port plate (3) can be bent into the U type by integral body, also can be welded into the U type.