CN87206896U

CN87206896U - Impeller flow metering valve

Info

Publication number: CN87206896U
Application number: CN 87206896
Authority: CN
Inventors: 董宽璞; 李淑明
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-04-25
Filing date: 1987-04-25
Publication date: 1988-06-29

Abstract

The utility model discloses an impeller flow metering valve, which belongs to a valve for metering the flow of the fluid. When the fluid passes through the valve, an impeller in the interior of a valve body rotates, and the rotational speed is detected by an external sensor, obtaining the goal of metering the flow. When the valve cuts off the fluid, the internal parts of the impeller, etc can be taken out from the exterior by opening a sealing cover. Therefore, the whole body is not needed to be disassembled from the duct when maintaining. The utility model has the double function of the valve and the flowmeter.

Description

Impeller flow metering valve

The utility model is a kind of valve that the pipeline inner fluid is measured and controls.

According to the understanding of claimant, find no the device similar with the utility model to prior art.

Present most widely used stop valve, only convection cell is controlled (conducting, cut-out or to the adjustment of flow), but can not measure flow.

And in the prior art, vane-wheel type flowmeter can only measure and can not control by convection cell by convection cell again, and in use, installs and keep in repair very inconvenient.

The utility model is the problem at above-mentioned existence, designs a kind of installation and maintenance conveniently, but the vane-wheel type flowmeter metered valve that convection cell measures.

Below with reference to accompanying drawing the utility model is further described:

Fig. 1 is a longitudinal sectional drawing of the present utility model, the impeller (6) that is contained in the spheroid (4) can rotate under the promotion of fluid, its rotating speed is directly proportional with flow, and the magnetoelectric sensor that the rotating speed of impeller is made up of magnet steel (7) and coil (8) is exported with the form of electrical pulse.

Magnetoelectric sensor is widely used in existing technology, its principle be the impeller (6) made by ferromagnetic substance blade near and during away from the magnetic pole of magnet steel (7), changed magnetic flux, thereby induced the electrical pulse number that is directly proportional with impeller (6) rotating speed at the two ends of coil (8) by coil (8).

Rotation valve rod (1) can make spheroid (4) deflection, and when 90 ° of deflections, fluid is cut off, as shown in Figure 2.At this moment open sealing cover (11), take out collar (9) and can extract impeller support (5) out, impeller parts such as (6).Pack into successively behind maintenance or the renewal part, screwing hermetic lid (11) utilizes valve rod (1) to make spheroid (4) return 90 ° again, and impeller gets final product work.Therefore, the utility model needn't all be unloaded down from pipeline when maintenance.

Because of the function of valveless, promptly convection cell can not end in general flowmeter, therefore, must adorn valve in addition when mounted, promptly respectively adorns a valve at the gateway end, does not influence work in order to keep in repair, and also need adorn a bypath valve, as shown in Figure 3.

When adopting the utility model, just need not at entry end and outlet end mounted valve.Therefore, economic benefit is conspicuous.

Compared with the prior art the utility model has following advantage:

1, inner body such as impeller pack into or take out can not will its integral body unload down from pipeline, thereby maintain and replace is very quick and convenient;

2, when mounted, its entry end and outlet end needn't be adorned valve in addition, and tangible economic benefit is arranged;

3, the aperture of the valve of utilization own can be adjusted the flow of pipeline inner fluid;

4, the aperture difference of valve, flow coefficient is together different, when producing in batches, can guarantee the product flow coefficient unanimity of same specification.Therefore, can simplify the circuit of Displaying Meter;

5, when shell is made four-way, can the flow of two pipelines be measured respectively.

The drawing explanation:

Fig. 1, Fig. 2 are sectional drawing of the present utility model, and Fig. 2 is the position after 90 ° of the expression spheroid deflections.

Its main parts size is: valve rod (1), shell (2), seal ring (3), spheroid (4), impeller support (5), impeller (6), magnet steel (7), coil (8), collar (9), aperture indicator panel (10), sealing cover (11).

Fig. 3, Fig. 4 are fitting arrangement:

The utility model (12), valve (13).

Claims

A kind of valve that can measure pipeline inner fluid flow.Form by valve rod (1), shell (2), seal ring (3), spheroid (4), impeller support (5), impeller (6), magnet steel (7), coil (8), collar (9), aperture indicator panel (10), sealing cover (11) etc.When fluid when the valve, promote impeller (6) rotation, its rotating speed is directly proportional with flow by valve.The magnetoelectric sensor of being made up of magnet steel (7) and coil (8) detects the rotating speed of the impeller form with electrical pulse, thereby reaches the purpose of flow measurement.It is characterized in that said impeller (6) is contained in the spheroid (4), utilize valve rod (1) can make impeller around valve rod deflection.