CN2557923Y

CN2557923Y - Generating type flow measurer

Info

Publication number: CN2557923Y
Application number: CN 02246017
Authority: CN
Inventors: 栗宏刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-19
Filing date: 2002-08-19
Publication date: 2003-06-25
Anticipated expiration: 2012-08-19

Abstract

Disclosed is a power generating type flow metering head, comprising a non -magnetic shell, an induction coil , an impeller and a permanent magnet rotor. The two ends of the shell are provided with outlet and inlet ports; the impeller and the permanent magnet rotor are connected by transmission with each other, and are rotationally supported inside the shell; the induction coil is attached to the outer side of the shell corresponding to the permanent magnet rotor; and the axis of the induction coil is perpendicular to the axis of the permanent magnet rotor. The utility model takes advantage of the electromagnetic induction principle to transform the power of the airflow or water flow into the power driving the impeller and the permanent magnet rotor to rotate; the electric pulse signal, whose frequency is in proportion to the flow, is produced in the induction coil so that the metering and intelligent management can be realized with the electronic technology. With simple structure and small size, the utility model is easy to be applied.

Description

Power generating type flow metering head

Technical field

The utility model relates to measurement mechanism, and particularly a kind of power generating type flow metering head is mainly used in the metering of liquid or gas flow.

Background technology

Still generally adopt the membrane type loading table at present in family's gas meter, its principle is to allow combustion gas filling table chamber, agitates film movement, connecting rod on the film promotes coded disc counting, and the valve that links is simultaneously agitated adjacent film movement to adjacent cavity inflation, interlock code-disc and valve go round and begin again again.Its shortcoming is that volume is big, complex structure, measuring accuracy are low, and intelligent difficulty is big; The general mechanical type count table that adopts measures in metering water meter, also is difficult for adopting intelligent management.

Summary of the invention

The purpose of this utility model just provides a kind of simple in structure, power generating type flow metering head of being convenient to intelligent management.

The technical solution of the utility model is: comprise non-magnetic conductive shell, inductive coil, impeller, p-m rotor, there is the inbound port of going out at the shell two ends, impeller and p-m rotor be in transmission connection and rotating support in the enclosure, inductive coil invests the position of the corresponding p-m rotor in the shell outside, and its axle center is vertical with the axle center of p-m rotor.

Described impeller is an axial-flow type, is connected on the armature spindle by spiral vane to constitute, and its armature spindle is rotationally connected by the bearing bridge dish and the shell of band opening.

Described impeller is a width of cloth streaming, is connected and composed by radially blade and armature spindle, at described shell middle part the cavity corresponding with above-mentioned blade profile is arranged, and this cavity is amesiality, and described armature spindle and shell axle center vertical rotation are bearing on the described cavity.

Described impeller and p-m rotor are structure as a whole, and are embedded with permanent magnet on the blade of impeller.

Described impeller and p-m rotor are coaxial to be in transmission connection.

Described impeller and p-m rotor are in transmission connection by train.

The utility model utilizes electromagnetic induction principle, changes air-flow or flow dynamic the rotation of impeller and p-m rotor into, produces its frequency and the proportional electric impulse signal of flow in inductive coil, is convenient to utilize electronic technology to realize measuring and intelligent management.It is simple in structure, volume is little, easy enforcement.

Description of drawings

Fig. 1 is the structural representation of axial flow integral type of the present utility model;

Fig. 2 is the A-A cut-open view of Fig. 1;

Fig. 3 is the B-B cut-open view of Fig. 1;

Fig. 4 is the structural representation of the utility model width of cloth stream integral type;

Fig. 5 is the structural representation of the coaxial driven type of the utility model.

Embodiment

Referring to Fig. 1-Fig. 3, the shell 1 of this embodiment is a cylindrical shape, its sealed at both ends connectivity port 12.Described impeller 2 is an axial-flow type, is connected on the armature spindle 22 by spiral vane 21 to constitute, and its armature spindle 22 is connected with shell 1 coaxial rotation by the tray deck 3 of band opening 31, and bearing 32 is arranged between the two.Impeller 2 is integrated with p-m rotor 5, is equivalent to be packed with permanent magnet 51 on the blade 21 of impeller.The position of corresponding p-m rotor 5 is with inductive coil 4 in shell 1 outside, and the axle center of its axle center and p-m rotor 5 (being the axle center of impeller 2) is perpendicular.So that inductive coil 4 can cutting magnetic line.

Referring to Fig. 4, the impeller 2 of this embodiment is a width of cloth streaming, connect and compose by armature spindle 22 and blade 21 radially, at described shell 1 middle part the cavity corresponding with the profile of above-mentioned blade 21 11 arranged, this cavity 11 is amesiality, and described armature spindle 22 is bearing on the described cavity 11 with the axle center vertical rotation of shell 1.Impeller 2 also is an one with p-m rotor 5, is about to permanent magnet 51 and is embedded on the blade 21.

Referring to Fig. 5, the impeller 2 of this embodiment (axial-flow type or width of cloth streaming) is split, both coaxial connections with p-m rotor 5.In addition, also can pass through train transmission or other kind of drive between impeller 2 of the present utility model and the p-m rotor 5.

Shell 1 of the present utility model, vane rotor 2 are made by the non-magnetic material.

Principle of work of the present utility model is: the two-port 12 of shell 1 of the present utility model is connected in series in the pipeline of the fluid media (medium) that is measured, promoting impeller 2 when fluid (liquid or gas) flows rotates, the flow of fluid is big more, and the kinetic energy of passing to impeller 2 is big more, makes impeller 2 rotate soon more.The permanent magnet 51 of (or on p-m rotor 5 that transmission drives) also rotates with impeller 2 on the blade 21 of impeller, form the magnetic field of rotating, inductive coil 4 in shell 1 outside cuts the magnetic line of force in these magnetic fields, produce the Pulse Electric kinetic potential, this signal is handled through electronic technology and is transformed to continuous data, and can realize intelligent management easily.Above-mentioned Pulse Electric kinetic potential also can utilize energy-storage travelling wave tube and correspondent control circuits to handle the power supply of back as interlock circuit, can realize passiveization metering.

Claims

1, a kind of power generating type flow metering head, it is characterized in that: comprise non-magnetic conductive shell, inductive coil, impeller, p-m rotor, there is the inbound port of going out at the shell two ends, impeller and p-m rotor be in transmission connection and rotating support in the enclosure, inductive coil invests the position of the corresponding p-m rotor in the shell outside, and its axle center is vertical with the axle center of p-m rotor.

2, power generating type flow metering head according to claim 1, it is characterized in that: described impeller is an axial-flow type, is connected on the armature spindle by spiral vane to constitute, its armature spindle is rotationally connected by the bearing bridge dish and the shell of band opening.

3, power generating type flow metering head according to claim 1, it is characterized in that: described impeller is a width of cloth streaming, connect and compose by radially blade and armature spindle, at described shell middle part the cavity corresponding with above-mentioned blade profile arranged, this cavity is amesiality, and described armature spindle and shell axle center vertical rotation are bearing on the described cavity.

4, according to claim 1,2 or 3 described power generating type flow metering heads, it is characterized in that: described impeller and p-m rotor are structure as a whole, and are embedded with permanent magnet on the blade of impeller.

5, according to claim 1,2 or 3 described power generating type flow metering heads, it is characterized in that: described impeller and p-m rotor are coaxial to be in transmission connection.

6, according to claim 1,2 or 3 described power generating type flow metering heads, it is characterized in that: described impeller and p-m rotor are in transmission connection by train.