CN207163510U - Plug-in two-channel ultrasonic flowmeter - Google Patents

Abstract

The utility model discloses a plug-in two-channel ultrasonic flowmeter, which comprises a ball valve and a flow totalizer. The ball valve and the flow totalizer are connected through a connecting rod and a GPRS wireless remote transmission component. The pressure sensor and the other end of the ball valve connected to the flow totalizer are connected with an ultrasonic flowmeter reflection device. The ultrasonic flowmeter reflection device includes an ultrasonic reflection box. Two sets of ultrasonic probe assemblies are installed in the ultrasonic reflection box. The ultrasonic probe assembly includes There are two ultrasonic probes correspondingly distributed up and down, and an ultrasonic reflector used to connect the upper and lower ultrasonic probes. The upper end of the ultrasonic reflection box forms a sealing fit with the connecting rod through the connecting seat, and the lower end of the ultrasonic reflection box is connected to the sealing cover. The utility model has the characteristics of long life, high precision, zero pressure loss, no rotating parts, stable long-term operation, high reliability and the like.

Description

Plug-in two-channel ultrasonic flowmeter

technical field

The utility model belongs to the technical field of flowmeters, and is widely used in water metering in industries such as urban water supply and drainage, petroleum, chemical industry, pharmacy, metallurgy, electric power, etc., in particular a plug-in dual-channel ultrasonic flow meter suitable for special large-caliber online pipelines. count.

Background technique

Most of the flowmeters in the prior art adopt a monophonic structure, and the stability and accuracy of the monophonic flowmeter are relatively poor. However, the measurement of the monophonic flowmeter has high requirements on the measurement environment and its application range is limited.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a plug-in dual-channel ultrasonic flowmeter, which has good stability and good measurement accuracy, and can reduce the impact of zero drift. At the same time, The weighted average of two-channel measurement can effectively reduce the requirements for straight pipes and fluid motion states, and is more adaptable to different measurement environments.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a plug-in dual-channel ultrasonic flowmeter, including a ball valve, a flow totalizer, and a connecting rod and a GPRS wireless remote transmission component between the ball valve and the flow totalizer. connection, a pressure sensor is installed on the flow totalizer, and the other end of the ball valve connected with the flow totalizer is connected with an ultrasonic flowmeter reflection device, which is characterized in that: the ultrasonic flowmeter reflection device includes an ultrasonic reflection box, an ultrasonic There are two sets of ultrasonic probe assemblies installed in the reflective box. The ultrasonic probe assembly includes two ultrasonic probes that are distributed up and down correspondingly, and an ultrasonic reflector used to connect the upper and lower ultrasonic probes. The upper end of the ultrasonic reflective box passes through the connecting seat and the connecting rod. A sealing fit is formed, and the lower end of the ultrasonic reflection box is connected to the sealing cover.

Further, the ultrasonic box body is provided with two upper and lower fluid channels, and the ultrasonic box body is divided into an upper entity, a middle entity and a lower entity through two fluid channels, and the two ultrasonic probes in each group of ultrasonic probe assemblies are respectively installed on the The upper body and the lower body are locked by compression nuts. The ultrasonic reflector is installed in the middle body and the two ends of the ultrasonic reflector penetrate into two fluid channels respectively and are opposite to the two ultrasonic probes distributed up and down. The ultrasonic probes The installation cavity and the fluid channel are sealed and connected by a sealing ring, and the compression nut and the connecting seat or the compression nut and the sealing cover are connected by a sealing gasket.

Further, a positioning pin is inserted into the side wall of the middle entity, and the head of the positioning pin is inserted into the groove of the side wall of the ultrasonic reflector to form a positioning fit.

Further, the end of the connecting rod is extended with a boss portion, and the connecting seat is provided with an opening groove for plugging and fitting with the boss portion, and the annular surface between the boss portion and the edge of the connecting seat rests on the radial direction of the opening groove. The end face is connected by a sealing ring.

Using the above scheme, the utility model integrates the ultrasonic probe, the ultrasonic reflector, etc. to form an integrated small-diameter dual-channel ultrasonic flowmeter; the integrated dual-channel to ultrasonic flowmeter has the following advantages: 1) After the flowmeter is debugged and calibrated before leaving the factory, on-site installation only needs to adjust the insertion depth of the flowmeter and correct the direction of the flowmeter, without further debugging and calibration, and the installation is simple and reliable. 2) Since the flowmeter has been made as a whole, only the whole flowmeter needs to be replaced during maintenance, so maintenance and repair are very convenient. 3) Since the structure is a whole, the position of the ultrasonic probe is fixed, and the propagation distance of the ultrasonic wave is constant; it is a small-caliber ultrasonic flowmeter, so it is not affected by the on-site hole opening error, and the on-site installation requirements Low. 4) This structure is equipped with a pressure sensor, which can reflect the pressure change in the pipeline in time, and can judge the failure of the water supply pipeline system according to the pressure change. 5) The flow totalizer and GPRS wireless remote transmission part of this structure are common to the ultrasonic water meter and are interchangeable. The utility model has the characteristics of long life, high precision, zero pressure loss, no rotating parts, stable long-term operation, high reliability and the like.

Below in conjunction with accompanying drawing, the utility model is further described.

Description of drawings

Accompanying drawing 1 is the structural representation of the specific embodiment of the utility model;

Accompanying drawing 2 is the structural side view of accompanying drawing 1 of the specific embodiment of the utility model;

Accompanying drawing 3 is the schematic diagram of the installation structure of the pressure sensor of the specific embodiment of the utility model;

Accompanying drawing 4 is the structural schematic diagram of the ultrasonic reflection device of the specific embodiment of the utility model;

Accompanying drawing 5 is the B-B sectional view among the accompanying drawing 4 of the specific embodiment of the utility model;

Accompanying drawing 6 is the enlarged view of part C in accompanying drawing 4 of the specific embodiment of the utility model;

Ball valve 1, flow totalizer 2, connecting rod 3, boss part 31, GPRS wireless remote transmission component 4, pressure sensor 5, ultrasonic flowmeter reflection device 6, ultrasonic reflection box 61, fluid channel 611, upper body 612, middle part Entity 613 , lower entity 614 , positioning pin 62 , compression nut 63 , ultrasonic probe 64 , ultrasonic reflector 65 , connecting seat 71 , sealing cover 72 , sealing ring 81 , and sealing gasket 82 .

Detailed ways

The specific embodiment of the utility model is shown in Figure 1-6 as a plug-in dual-channel ultrasonic flowmeter, including a ball valve 1, a flow totalizer 2, and a connecting rod 3 and a GPRS wireless connection between the ball valve 1 and the flow totalizer 2 The remote transmission component 4 is connected, and the pressure sensor 5 is installed on the flow totalizer 2. The other end of the ball valve 1 connected with the flow totalizer 2 is connected with an ultrasonic flowmeter reflection device 6, and the ultrasonic flowmeter reflection device 6 includes an ultrasonic flowmeter. Reflecting box 61, two groups of ultrasonic probes 64 assemblies are installed in the ultrasonic reflecting box 61, ultrasonic probes 64 assemblies comprise respectively being 2 ultrasonic probes 64 that are distributed up and down correspondingly, and the ultrasonic reflector 65 that is used to connect up and down 2 ultrasonic probes 64 , the upper end of the ultrasonic reflection box 61 forms a sealing fit with the connecting rod 3 through the connecting seat 71 , and the lower end of the ultrasonic reflection box 61 is connected to the sealing cover 72 .

The ultrasonic box is provided with two upper and lower fluid channels 611, and the ultrasonic box is divided by two fluid channels 611 to form an upper entity 612, a middle entity 613 and a lower entity 614, and the two ultrasonic probes 64 in each group of ultrasonic probe 64 components are respectively Installed in the upper entity 612 and the lower entity 614 and locked by the compression nut 63, the ultrasonic reflector 65 is installed in the middle entity 613 and the two ends of the ultrasonic reflector 65 respectively penetrate into two fluid passages 611 and are distributed up and down The two ultrasonic probes 64 are opposite, the installation cavity of the ultrasonic probe 64 and the fluid channel 611 are sealed and connected by a sealing ring 81, and the compression nut 63 and the connection seat 71 or the compression nut 63 and the sealing cover 72 are connected by a sealing gasket 82 Sealed connection.

A positioning pin 62 is inserted into the side wall of the middle entity 613 , and the head of the positioning pin 62 is inserted into a groove on the side wall of the ultrasonic reflector 65 to form a positioning fit.

The end portion of the connecting rod 3 is extended with a boss portion 31, and the connecting seat 71 is provided with an open groove that forms an insertion fit with the boss portion 31, and the annular surface between the boss portion 31 and the edge of the connecting seat 71 rests on the diameter of the opening groove. To the end face and through the sealing ring 81 connection.

The working principle of the utility model is to use the relationship between the flow velocity of the fluid and the time difference between the forward and reverse propagation of the ultrasonic wave to measure the liquid flow in the circular tube; when the ultrasonic wave propagates in the liquid, the ultrasonic pulse emitted by the probe No. 1 passes through the reflector Received by probe No. 2, at the same time, probe No. 2 also emits ultrasonic pulses, which are received by probe No. 1 through the reflector; similarly: the ultrasonic pulses emitted by probe No. 3 are received by probe No. Ultrasonic pulses are also emitted, which are received by probe No. 3 through the reflector; probe No. 1 and probe No. 2 are the upper and lower groups, and probe No. 3 and probe No. 4 are the upper and lower groups. The two groups of probe structures, the sound waves propagate in the downstream direction The speed will increase, and the reverse direction will decrease. The same propagation distance will have different propagation times. Use the relationship between the difference of propagation time and the measured flow velocity to calculate the flow velocity, and then obtain the flow rate.

The utility model is not limited to the above-mentioned specific implementation manners, those skilled in the art can adopt various other specific implementation modes to implement the utility model according to the disclosed content of the utility model, or whoever adopts the design structure and ideas of the utility model, Do simple changes or changes, all fall into the protection scope of the present utility model.

Claims (4)

1. a kind of plug-in type two-channel ultrasonic flowmeter, including ball valve, flow integrator, pass through between ball valve and flow integrator Connecting rod is connected with GPRS wireless remote transmission components, and pressure sensor is provided with flow integrator, and ball valve accumulates relative to flow The other end for calculating instrument connection is connected with Reflecting device of ultrasonic flowmeter, it is characterised in that：The Reflecting device of ultrasonic flowmeter bag Include with ultrasonic reflections box, two groups of ultrasonic probe components are installed, ultrasonic probe component includes point in ultrasonic reflections box 2 ultrasonic probes of distribution and the ultrasound reflector for connecting upper and lower 2 ultrasonic probes Cheng not be corresponded to up and down, Ultrasonic reflections box upper end forms sealing by connecting seat and connecting rod and coordinated, ultrasonic reflections box lower end connection closure.

2. plug-in type two-channel ultrasonic flowmeter according to claim 1, it is characterised in that：The ultrasonic wave box body is provided with Upper and lower two fluid passages, ultrasonic wave box body are split to form top entity, middle part entity and bottom entity through two fluid passages, 2 ultrasonic probes in each group of ultrasonic probe component are respectively arranged in the entity of top, in the entity of bottom and through compressing Nut check, ultrasound reflector is installed on middle part entity and the both ends of ultrasound reflector are respectively penetrated in two fluid passages It is close by sealing ring between the installation cavity of ultrasonic probe and fluid passage and 2 with being distributed up and down ultrasonic probes are relative Envelope connection, is tightly connected between clamp nut and connecting seat or clamp nut and closure by sealing gasket.

3. plug-in type two-channel ultrasonic flowmeter according to claim 2, it is characterised in that：The middle part solid side wall is inserted Entering has alignment pin, and location fit is formed in the groove of the head insertion ultrasonic reflections body sidewall of alignment pin.

4. the plug-in type two-channel ultrasonic flowmeter according to Claims 2 or 3, it is characterised in that：The connection boom end Boss portion is extended with, connecting seat is provided with the open slot for forming grafting with boss portion and coordinating, between boss portion and connecting seat edge Ring surface be held on open slot radial end face and connected by sealing ring.