CN206019737U - A kind of plug-type ultrasonic flowmeter - Google Patents

Abstract

The utility model discloses a plug-in ultrasonic flowmeter, which comprises a flow reflection mechanism, a meter head assembly and a connecting rod; the flow reflection mechanism is arranged at the lower end of the connecting rod, and the meter head assembly is arranged at the upper end of the connecting rod; the flow reflection mechanism It includes an ultrasonic reflective box, two ultrasonic sensors, two ultrasonic reflectors, and a connecting seat; a straight fluid channel is set on the ultrasonic reflective box, and the two ultrasonic sensors are fixedly arranged on the fluid channel The side wall, the two ultrasonic reflectors are fixedly arranged on the lower side wall of the fluid channel; the two ultrasonic sensors and the two ultrasonic reflectors are located in the same right-angled quadrilateral, and the two ultrasonic reflectors The upper end is provided with opposite slopes for reflecting ultrasonic waves. The purpose of the utility model is to provide a reflection device of an ultrasonic flowmeter, so that the installation of the ultrasonic flowmeter is simple and reliable, and the repair and maintenance in the later period are very convenient.

Description

An Insertion Type Ultrasonic Flowmeter

technical field

The utility model relates to the technical field of flow measurement, in particular to an insertion type ultrasonic flowmeter.

Background technique

As we all know, traditional flow meters or heat meters mostly use impeller flow sensors, which have defects such as complex structure and short service life. Once used for a long time, the measurement accuracy will gradually decrease, and because the fluid contains impurities, it is often affected Serious effects such as blockage will bring losses to the use. Therefore, the ultrasonic flowmeter replaces the traditional flowmeter or heat meter because it has no mechanical moving parts and can ensure the measurement accuracy.

In the prior art, as shown in Fig. 1 and Fig. 2, after the on-site drilling, the sensors of the two ultrasonic flowmeters A1 are installed on the pipeline B1, and the zero-point adjustment and flow calibration are carried out on-site. However, due to the excessive water pressure in the pipeline and the Fast water flow will make zero point adjustment and flow calibration more difficult, and will make later inspection and maintenance inconvenient.

Utility model content

The purpose of the utility model is to provide a reflection device of an ultrasonic flowmeter, which makes the installation of the ultrasonic flowmeter simple and reliable, and the later maintenance and maintenance are very convenient.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a plug-in ultrasonic flowmeter, which is characterized in that it includes a flow reflection mechanism, a meter assembly, and a connecting rod; the flow reflection mechanism is arranged at the lower end of the connecting rod, and the meter The head assembly is arranged on the upper end of the connecting rod; the flow reflecting mechanism includes an ultrasonic reflecting box, two ultrasonic sensors, two ultrasonic reflecting bodies, and a connecting seat; a straight fluid channel is arranged on the ultrasonic reflecting box, and the Two ultrasonic sensors are fixedly arranged on the upper sidewall of the fluid channel, and the two ultrasonic reflectors are fixedly arranged on the lower sidewall of the fluid channel; the two ultrasonic sensors and the two ultrasonic reflectors are located In the same right-angled quadrilateral, and the upper ends of the two ultrasonic reflectors are provided with opposite slopes for reflecting ultrasonic waves.

The utility model is further provided that the upper side of the ultrasonic reflection box is a horizontal plane, and the horizontal plane is provided with two through holes communicating with fluid passages, the ultrasonic sensor is arranged in the through holes, and the The lower end of the through hole is provided with an annular boss to offset the lower end of the ultrasonic sensor, and a compression nut is provided on the upper side of the ultrasonic sensor. The lower end surface of the connection seat is concaved to form a wire passage cavity, the compression nut is provided with a wire passage hole connected to the ultrasonic sensor, the connecting rod is hollow inside and communicated with the wire passage cavity, and the connection seat and A gasket is provided between the ultrasonic reflection box, and an O-ring is provided between the boss and the ultrasonic sensor.

The utility model is further configured that the gauge assembly is connected to the connecting rod through the gauge connection assembly.

The utility model is further provided that the meter head connection assembly includes a flange, a first lock nut and a sealing ring; wherein, the flange and the first lock nut are both sleeved on the connecting rod on the outer wall, and the flange can be fixed to the shell of the meter head assembly through the first lock nut; there are at least two sealing rings, and at least one sealing ring is arranged between the flange and the outer wall. Between the connecting rods, at least one sealing ring is arranged between the flange and the shell of the gauge assembly.

The utility model is further provided that the ultrasonic reflector is cylindrical, and the lower side wall of the ultrasonic reflective box is provided with a concave hole for placing the ultrasonic reflector.

Beneficial effects of the utility model: The plug-in ultrasonic flowmeter provided by the utility model connects the ultrasonic sensor, the ultrasonic reflector, the head assembly (such as a flow totalizer), etc. Calibration, during on-site installation, it is only necessary to adjust the depth of the flow reflection mechanism inserted into the pipeline and the direction of correction. Therefore, no need to re-adjust and calibrate, making the installation of the ultrasonic flowmeter simple and reliable, and only need to replace the flow rate during maintenance. The reflective mechanism is enough, so that the later repair and maintenance are very convenient; the positions of the two ultrasonic sensors in the flow reflective mechanism are relatively fixed, so that the propagation distance of the ultrasonic wave is constant, and the flow reflective mechanism is small in size and structure, so It is not affected by the error of on-site opening, and has low requirements for on-site installation.

Description of drawings

Fig. 1 is a structural diagram of the installation and cooperation of an ultrasonic flowmeter and a pipeline in the prior art;

Fig. 2 is another structural diagram of the installation and cooperation of the ultrasonic flowmeter and the pipeline in the prior art;

Fig. 3 is the structural representation of the utility model;

Fig. 4 is a schematic structural diagram of the flow reflection mechanism of the present invention;

Fig. 5 is a cross-sectional view of the flow reflection mechanism of the present invention;

Fig. 6 is an enlarged view of part B in Fig. 3 of the present utility model.

Meanings of symbols in the figure: 1-flow reflection mechanism; 2-head assembly; 3-connecting rod; 4-ultrasonic reflection box; 5-ultrasonic sensor; 6-ultrasonic reflector; 9-Slope; 10-Through hole; 11-Boss; 12-Compression nut; 13-Wire passage cavity; 14-Wire passage hole; 15-Sealing gasket; 16-O-ring; ; 18-flange; 19-first lock nut; 20-sealing ring; 21-recessed hole; B1-pipe.

detailed description

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

The utility model is described below with reference to Fig. 1 to Fig. 6 .

A plug-in ultrasonic flowmeter, comprising a flow reflection mechanism 1, a meter head assembly 2, and a connecting rod 3; 1 into the pipeline for use; the flow reflection mechanism 1 includes an ultrasonic reflection box 4, two ultrasonic sensors 5, two ultrasonic reflections 6, and a connecting seat 7; The fluid passage 8, the two ultrasonic sensors 5 are fixedly arranged on the upper sidewall of the fluid passage 8, and the two ultrasonic reflectors 6 are fixedly arranged on the lower sidewall of the fluid passage 8; the two ultrasonic waves The sensor 5 and the two ultrasonic reflectors 6 are located in the same right-angled quadrilateral, and the upper ends of the two ultrasonic reflectors 6 are provided with opposite slopes 9 for reflecting ultrasonic waves.

The upper side of the ultrasonic reflection box body 4 is a horizontal plane, and the horizontal plane is provided with two through holes 10 communicating with the fluid channel 8, the ultrasonic sensor 5 is arranged in the through holes 10, and the lower end of the through holes 10 An annular boss 11 is arranged to offset against the lower end of the ultrasonic sensor 5, and a compression nut 12 is arranged on the upper side of the ultrasonic sensor 5, and the compression nut 12 is threadedly connected with the through hole 10, and the connecting seat 7 is covered on the horizontal surface , the lower end surface of the connecting seat 7 is concaved to form a wire passage cavity 13, the compression nut 12 is provided with a wire passage hole 14 communicating with the ultrasonic sensor 5, and the connecting rod 3 is hollow inside and connected to the passage The wire cavity 13 is connected, and the electrical connecting wire on the ultrasonic sensor 5 passes through the wire hole 14, the wire cavity 13, and the hollow connecting rod 3 is connected with the meter head assembly 2, and the connecting seat 7 and the ultrasonic reflection box 4 are connected to each other. A gasket 15 is provided, and an O-ring 16 is arranged between the boss 11 and the ultrasonic sensor 5, and the O-ring 16 is used to prevent fluid from entering between the ultrasonic sensor 5 and the boss 11. The channel, the gasket 15 is used to prevent the fluid from entering the channel between the connecting seat 7 and the ultrasonic reflection box 4. The above-mentioned structure is designed reasonably, and there is a channel for passing the line inside. At the same time, it has good sealing performance and can meet conditions in the fluid.

The meter head assembly 2 and the connecting rod 3 are connected by a meter head connection assembly 17, and the meter head connection assembly 17 includes a flange 18, a first lock nut 19 and a sealing ring 20; wherein, the flange 18 is connected to the The first locking nuts 19 are all sleeved on the outer wall of the connecting rod 3, and the flange 18 can be fixed to the shell of the gauge assembly 2 through the first locking nuts 19; There are at least two sealing rings 20, wherein at least one sealing ring 20 is arranged between the flange 18 and the connecting rod 3, and at least one sealing ring 20 is arranged between the flange 18 and the gauge assembly 2 between the shells.

The ultrasonic reflector 6 is cylindrical, and the lower side wall of the ultrasonic reflective box 4 is provided with a concave hole 21 for placing the ultrasonic reflector 6 .

Beneficial effects of the utility model: The plug-in ultrasonic flowmeter provided by the utility model connects the ultrasonic sensor, the ultrasonic reflector, the head assembly (such as a flow totalizer), etc. Calibration, during on-site installation, it is only necessary to adjust the depth of the flow reflection mechanism inserted into the pipeline and the direction of correction. Therefore, no need to re-adjust and calibrate, making the installation of the ultrasonic flowmeter simple and reliable, and only need to replace the flow rate during maintenance. The reflective mechanism is enough, so that the later repair and maintenance are very convenient; the positions of the two ultrasonic sensors in the flow reflective mechanism are relatively fixed, so that the propagation distance of the ultrasonic wave is constant, and the flow reflective mechanism is small in size and structure, so It is not affected by the error of on-site opening, and has low requirements for on-site installation.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and modifications can also be made. These improvements and variations should also be regarded as the protection scope of the present utility model.

Claims (5)

1. A plug-in ultrasonic flowmeter, characterized in that: it includes a flow reflection mechanism, a meter assembly, and a connecting rod; the flow reflection mechanism is arranged at the lower end of the connecting rod, and the meter assembly is arranged at the upper end of the connecting rod; the flow reflection The mechanism includes an ultrasonic reflective box, two ultrasonic sensors, two ultrasonic reflectors, and a connecting seat; a straight fluid channel is set on the ultrasonic reflective box, and the two ultrasonic sensors are fixedly arranged on the sides of the fluid channel. On the upper side wall, the two ultrasonic reflectors are fixedly arranged on the lower side wall of the fluid channel; the two ultrasonic sensors and the two ultrasonic reflectors are located in the same right-angled quadrilateral, and the two ultrasonic reflectors The upper end of the body is provided with opposite slopes for reflecting ultrasonic waves. 2. A plug-in ultrasonic flowmeter according to claim 1, characterized in that: the upper side of the ultrasonic reflection box is a horizontal plane, and the horizontal plane is provided with two through holes communicating with fluid passages, so The ultrasonic sensor is arranged in the through hole, an annular boss is arranged at the lower end of the through hole to offset the lower end of the ultrasonic sensor, and a compression nut is arranged on the upper side of the ultrasonic sensor, and the compression nut is threadedly connected with the through hole. The connecting seat is arranged on the horizontal plane, the lower end surface of the connecting seat is concaved to form a wire passage cavity, the compression nut is provided with a wire passing hole connected to the ultrasonic sensor, and the connecting rod is hollow inside and connected to the The wire passage cavity is connected, a sealing gasket is provided between the connecting seat and the ultrasonic reflection box body, and an O-shaped sealing ring is provided between the boss and the ultrasonic sensor. 3. An insertion type ultrasonic flowmeter according to claim 1 or 2, characterized in that: the gauge assembly and the connecting rod are connected through a gauge connection assembly. 4. An insertion type ultrasonic flowmeter according to claim 3, characterized in that: the meter head connection assembly includes a flange, a first lock nut and a sealing ring; wherein, the flange and the second A lock nut is sleeved on the outer wall of the connecting rod, and the flange can be fixed to the shell of the gauge assembly through the first lock nut; there are at least two sealing rings, Wherein, at least one sealing ring is arranged between the flange and the connecting rod, and at least one sealing ring is arranged between the flange and the shell of the gauge assembly. 5. An insertion type ultrasonic flowmeter according to claim 1, characterized in that: the ultrasonic reflector is cylindrical, and the lower side wall of the ultrasonic reflective box is provided with a concave hole for placing the ultrasonic reflector.