CN201555623U

CN201555623U - Ultrasonic throttle device

Info

Publication number: CN201555623U
Application number: CN2009202938618U
Authority: CN
Inventors: 杨劲松; 唐田; 汪松林; 刘庆
Original assignee: CHONGQING WECAN IM Co Ltd
Current assignee: Chongqing Wei'an Measuring Manufacturing Co., Ltd.
Priority date: 2009-12-17
Filing date: 2009-12-17
Publication date: 2010-08-18
Anticipated expiration: 2019-12-17

Abstract

The utility model discloses an ultrasonic throttle device, which comprises a throttle body, wherein a throttle hole is arranged in the throttle body. The essential point includes that the throttle hole consists of an inlet hole, a measuring hole and an outlet hole which are connected end to end sequentially, a first mounting hole and a second mounting hole which penetrate through the measuring hole are symmetrically arranged on the upper portion of the throttle body at the section of the measuring hole, the first mounting hole and the second mounting hole are both inclined from outside to inside, and center lines of the two mounting holes form a V shape. An ultrasonic flow meter used with the ultrasonic throttle device is high in measurement precision during usage and suitable for measurement of flow in pipes with different calibers. The clutch structure of the ultrasonic throttle device has the advantages of easy operation, simple maintenance, low cost and the like.

Description

A kind of ultrasonic restriction device

Technical field

The utility model relates to a kind of restriction device, specifically, relates in particular to a kind of ultrasonic flowmeter restriction device.

Background technology

As everyone knows; tradition flowmeter or heat energy table mechanical vane type or the rotary wind types etc. of adopting more; the number of turns according to wheel rotation is directly proportional with flow; counter is by gathering the number of turns calculated flow rate of wheel rotation; because there is mechanical wear in the rotation of impeller; therefore traditional mechanical formula flowmeter or heat energy table exist serviceable life short; defectives such as structure vice president; especially owing to can causing measuring accuracy, reasons such as damage in impeller reduce; in addition; because fluid exists and contains under the situation of impurity; therefore mechanical flow meter or heat energy table usually can be and having a strong impact on of being stopped up brings loss to the user.

At present, people use ultrasonic flowmeter to come calculated flow rate more, and ultrasonic flowmeter is to flow work to supersonic beam (or ultrasonic pulse) in order to measure the instrument of flow by test fluid.And ultrasonic flowmeter that uses at present or restriction device passage the inside are provided with barrier member, and so measuring accuracy is low; The ultrasonic flowmeter that has is the same with electromagnetic flowmeter, because of instrument restriction device circulation passage is not provided with any barrier member, all belong to without hindrance flowmeter, it is a class flowmeter that is suitable for solving the flow measurement difficult problem, especially outstanding advantage is being arranged aspect the heavy caliber flow measurement, it is to develop one of class flowmeter rapidly in recent years, but this kind is low for measuring small-bore flow measurement precision.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of simple in structure, ultrasonic restriction device that measuring accuracy is high.

The technical solution of the utility model is as follows: design a kind of ultrasonic restriction device, comprise throttle body, in described throttle body, have throttle orifice, its main points are: described throttle orifice is joined end to end successively by ingate, measured hole and outlet opening and forms, have first mounting hole and second mounting hole that connects this measured hole in the throttle body top of described measured hole section symmetry, the equal ecto-entad of described first mounting hole and second mounting hole tilts, and two mounting hole center lines constitute V-arrangement.

Thereby the utility model is to design on the low defective of measuring accuracy at restriction device unreasonable the causing of design of conventional ultrasound flowmeter, the utility model adopts in throttle body top symmetry and offers the ecto-entad that connects this measured hole tilt first mounting hole and second mounting hole, at first mounting hole probe of packing into, ultrasound wave enters measured hole from this first mounting hole, and after the hole wall of measured hole repeatedly reflects, from second mounting hole, reflecting, thereby the flow of fluid in the measurement throttle body.

Described throttle body is in the form of annular discs, is provided with feet in this throttle body lower end, and the two ends of throttle body are connected with pipeline, and feet can well support the utility model.

Be not subjected to any obstruction in the process fluid flow in order to make, all shrink from outside to inside gradually in described ingate and outlet opening aperture, and this ingate is consistent with described measured hole aperture with outlet opening miner diameter end pore size.

For the measurement that makes flow more accurate, and it is more reasonable that ultrasound wave is reflected in measured hole, described first mounting hole and second mounting hole are up big and down small stepped hole, and the aperture, bottom is 8mm, the centerline hole of this first mounting hole and second mounting hole becomes 70 ° of angles, and so design can be installed the measuring sonde that complements one another at this first mounting hole and second mounting hole.

Beneficial effect: the utility model is a measuring accuracy height when using in the ultrasonic flowmeter, is applicable to the measurement of flow in the different bore pipes, this kind clutch structure easy operating, have simple in structure, for ease of maintenaince, characteristics such as with low cost.

Description of drawings

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

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the A-A cut-open view among Fig. 2.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As Fig. 1～a kind of ultrasonic restriction device shown in Figure 3, comprise throttle body 1, throttle orifice, first mounting hole 5 and second mounting hole 6, described throttle body 1 is in the form of annular discs, be provided with feet 1a in this throttle body 1 lower end, in described throttle body 1, have throttle orifice, described throttle orifice is by ingate 2, measured hole 3 and outlet opening 4 join end to end successively and form, throttle body 1 top symmetry 3 sections of described measured holes has first mounting hole 5 and second mounting hole 6 that connects this measured hole 3, described first mounting hole 5 and second mounting hole, 6 equal ecto-entads tilt, and two mounting hole center lines constitute V-arrangement.

See also Fig. 3: all shrink from outside to inside gradually in described ingate 2 and outlet opening 4 apertures, and this ingate 2 is consistent with described measured hole 3 apertures with outlet opening 4 miner diameter end pore sizes; Described first mounting hole 5 and second mounting hole 6 are up big and down small stepped hole, and the aperture, bottom is 8mm, and the centerline hole of this first mounting hole 5 and second mounting hole 6 becomes 70 ° of angles.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. ultrasonic restriction device, comprise throttle body (1), in described throttle body (1), have throttle orifice, it is characterized in that: described throttle orifice is joined end to end successively by ingate (2), measured hole (3) and outlet opening (4) and forms, throttle body (1) top symmetry in described measured hole (3) section has first mounting hole (5) and second mounting hole (6) that connects this measured hole (3), described first mounting hole (5) and second mounting hole (6) all ecto-entad tilt, and two mounting hole center lines constitute V-arrangement.

2. a kind of ultrasonic restriction device according to claim 1 is characterized in that: described throttle body (1) is in the form of annular discs, is provided with feet (1a) in this throttle body (1) lower end.

3. a kind of ultrasonic restriction device according to claim 1, it is characterized in that: all shrink from outside to inside gradually in described ingate (2) and outlet opening (4) aperture, and this ingate (2) are consistent with described measured hole (3) aperture with outlet opening (4) miner diameter end pore size.

4. a kind of ultrasonic restriction device according to claim 1, it is characterized in that: described first mounting hole (5) and second mounting hole (6) are up big and down small stepped hole, and the aperture, bottom is 8mm, and the centerline hole of this first mounting hole (5) and second mounting hole (6) becomes 70 ° of angles.