CN201269765Y

CN201269765Y - Ultrasonic flowmeter

Info

Publication number: CN201269765Y
Application number: CNU200820027193XU
Authority: CN
Inventors: 付涛; 王兆杰; 左林; 赵清华; 毕勇冠; 杨文艺
Original assignee: Weihai Ploumeter Co Ltd
Current assignee: Weihai Ploumeter Co., Ltd.
Priority date: 2008-08-27
Filing date: 2008-08-27
Publication date: 2009-07-08
Anticipated expiration: 2018-08-27

Abstract

The utility model discloses an ultrasonic flow meter which is characterized by being provided with an internal meter-body pipe; the internal meter-body pipe is connected with a meter-body pipe through a supporting board; mounting holes are respectively arranged on the pipe walls at two sides of the internal meter-body pipe and the meter-body pipe; a mounting seat is respectively mounted in the mounting holes at the two sides; an ultrasonic transducer is mounted in the mounting seat by mounting parts; and the central axes of the two transducers in a mounting sheath are superposed. The ultrasonic flow meter adopts a twin-layer pipe structure and an ultrasonic-wave straight structure, well rectifies fluid in the pipes, reduces the transmitting power of the ultrasonic transducers and has the advantages of long service life, small pressure loss, low possibility for blockage, high measuring precision, strong anti-interference capacity, convenient maintenance and replacement and the like, thus being especially applicable to heat meters.

Description

Ultrasonic flowmeter

Technical field:

The utility model relates to the metering of flow, specifically a kind of ultrasonic flowmeter.

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; but there is mechanical wear in the rotation in impeller; therefore there are defectives such as short complex structure in serviceable life in traditional mechanical formula flowmeter or heat energy table; 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 subjected to stopping up etc. and have a strong impact on, and bring loss to the user.

At present, people use ultrasonic flowmeter, it is by counter, flow sensor is formed, flow sensor is by the measuring tube parts, ultrasonic transducer and installing component thereof, formations such as lead, the measuring tube parts are by table body pipe, flange is formed, ultrasonic transducer is in installing component is fixed on mount pad, installing component comprises locating ring, pressure pipe, installation sleeve, clamp nut and seal, be that transducer is through seal, locating ring, pressure pipe and clamp nut are assemblied in the installation sleeve, installation sleeve and clamp nut, sealing plug screw and seal is assemblied in the mount pad, prevent that fluid and foreign material from entering in the installation sleeve parts, prevent that fluid from leaking at the mount pad place, guarantee well-equipped running, improved transducer serviceable life and kept measuring accuracy that the deficiency of this ultrasonic flowmeter is the liquid-transport pipe-line that only is applicable to minor diameter.

Summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of long service life, system power dissipation low, the pressure loss is little, measuring accuracy is high, strong interference immunity,, be suitable for the wide ultrasonic flowmeter of caliber scope.

The concrete technical scheme that adopts of the utility model:

A kind of ultrasonic flowmeter, comprise flowmeter table body, ultrasonic transducer and installing component thereof and counter, flowmeter table body comprises table body pipe, flange, mount pad, installing component comprises locating ring, pressure pipe, installation sleeve, clamp nut and seal plug screw and seal thereof, it is characterized in that being provided with pipe in the table body, pipe is connected with table body pipe through back up pad in the table body, be respectively equipped with mounting hole on the tube wall of pipe and table body pipe both sides in the table body, mount pad is separately fixed in the mounting hole, ultrasonic transducer in installing component is assemblied in mount pad, the central axes of two transducers.

Flowmeter table body is fixed on table body pipe middle part by pipe in the table body through back up pad in the utility model, be respectively equipped with mounting hole on the tube wall of pipe and table body pipe both sides in the table body, mount pad is separately fixed in the mounting hole, can carry out rectified action to the fluid of measuring better, strengthen antijamming capability, and under the prerequisite that guarantees measuring accuracy, save material.

Installing component comprises locating ring, pressure pipe, installation sleeve, clamp nut and seal in the utility model, transducer is assemblied in the installation sleeve through seal, locating ring, pressure pipe and clamp nut, installation sleeve and clamp nut, seal plug screw and seal is assemblied in the mount pad, prevent that fluid and foreign material from entering in the installation sleeve parts, prevent that fluid from leaking at the mount pad place, guarantee well-equipped running, improved transducer serviceable life and kept measuring accuracy.

The utility model adopts double-skin duct structure and ultrasound wave direct-injection type mechanism, reach the fluid in the pipeline is played good rectified action, improve antijamming capability, reduce the transducer emissive power, reduce system power dissipation, improve the measuring accuracy of transducer, prolong operable time, have the saving energy, long service life, the pressure loss be little, be difficult for obstruction, measuring accuracy height, antijamming capability is strong, sound construction is reliable, advantages such as convenient maintenance and replacement.

Description of drawings:

Fig. 1 is the structural representation that the utility model is applied to the heat energy table.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is the left view of Fig. 2.

Ultrasonic transducer is assemblied in mount pad inner structure synoptic diagram by installing component in Fig. 4 the utility model.

Mark among the figure: pipe 8, mount pad 9, ultrasonic transducer 10, locating ring 11, pressure pipe 12, installation sleeve 13, clamp nut 14 in counter 1, return water temperature sensor 2, inflow temperature sensor 3, flow sensor 4, flange 5, table body pipe 6, back up pad 7, the table body, seal plug screw 15, seal 16.

Embodiment:

Below in conjunction with accompanying drawing the utility model being applied to the heat energy table is further described:

As shown in drawings, a kind of ultrasonic flowmeter, when being applied in ultrasonic heat energy table, it comprises flow sensor 4, pairing temperature sensor, counter 1, wherein pairing temperature sensor is made up of inflow temperature sensor 3 and return water temperature sensor 2 and auxiliary component thereof, pairing temperature sensor and counter 1 are little with prior art difference, and this does not give unnecessary details.Flow sensor 4 comprises table body pipe 6 in the utility model, back up pad 7, pipe 8 in the table body, flange 5, mount pad 9, ultrasonic transducer 10, lead and ultrasonic transducer 10 is assemblied in installing component and seal 16 in the mount pad 9, of the present utility model being characterised in that is provided with pipe 8 in the table body, pipe 8 is in the middle part of back up pad 7 is connected with table body pipe 6 and is installed in the table body, be respectively equipped with mounting hole on the tube wall of pipe 8 and table body pipe 6 both sides in the table body, mount pad 9 is installed in the mounting hole respectively, the central axes of two ultrasonic transducers 10, fluid in back up pad 7 and the table body in 8 pairs of pipelines of pipe plays good rectified action, improve antijamming capability, to obtain measurement data more accurately.

Installing component generally comprises locating ring 11, pressure pipe 12, installation sleeve 13, clamp nut 14 and seal 16 in the utility model, ultrasonic transducer 10 is assemblied in the installation sleeve 13 through seal 16, locating ring 11, pressure pipe 12 and clamp nut 14, installation sleeve 13 is assemblied in the mount pad 9 with seal 16, clamp nut 14, again by sealing 15 pairs of mount pad sealings of plug screw assembling, prevent that fluid and foreign material from entering in the installation sleeve parts, guarantee good stable work, improve ultrasonic transducer serviceable life and measuring accuracy, and prevent escape of liquid.

The utility model adopts double-skin duct structure and ultrasonic wave direct-injection type mechanism, and the pipeline inner fluid is carried out Well rectified action reduces the ultrasonic transducer transmitting power, reduces system power dissipation, the raising transducer Certainty of measurement prolongs operable time, has the saving energy, have long service life, the pressure loss little, Be difficult for obstructions, certainty of measurement height, antijamming capability is strong, sound construction is reliable, maintenance, replacing are easy etc. Advantage is specially adapted to heat energy meter.

Claims

1, a kind of ultrasonic flowmeter, comprise flowmeter table body, ultrasonic transducer and installing component thereof and counter, flowmeter table body comprises table body pipe, flange, mount pad, installing component comprises locating ring, pressure pipe, installation sleeve, clamp nut and seal plug screw and seal thereof, it is characterized in that being provided with pipe in the table body, pipe is connected with table body pipe through back up pad in the table body, be respectively equipped with mounting hole on the tube wall of pipe and table body pipe both sides in the table body, mount pad is separately fixed in the mounting hole, ultrasonic transducer in installing component is assemblied in mount pad, the central axes of two transducers.

2, a kind of ultrasonic flowmeter according to claim 1 is characterized in that being provided with pipe in the table body, and pipe is installed in table body pipe middle part through back up pad in the table body.