[Invention of the Instrument] Water Meter with Rectifier

The use of ultrasound to measure the flow rate of water is now a relatively broad technique. Usually, in the process of actually measuring the flow rate, the liquid will flow through the pipe when there is laminar flow, transitional flow or turbulent flow, and is affected by the wall of the pipe. The liquid flow velocity at each point of the same cross section in the tube is quite different. This will affect the accurate measurement of the liquid flow rate to a certain extent. The stability of the flow velocity affects the accuracy of the flow measurement to a great extent. In some flow control accuracy requirements In high places, the unstable state of the flow rate should be eliminated to ensure that the water meter is accurate and reliable. Therefore, a rectified water meter is required.

There is no limit to creativity, and instrumentation is invented. In view of the above, in order to overcome the shortcomings of the existing technology, today [instrumentation] has introduced a utility model patent authorized by the country - a water meter with a rectifier.

The water meter was invented by Chongqing Weishore Instrument Manufacturing Co., Ltd. and was authorized on August 20, 2014.
Specific instructions:

A water meter with a rectifier includes a meter head, a flow tube and an ultrasonic transducer, wherein two flow conversion holes are opened on the flow tube, and the ultrasonic waves are installed in both of the power conversion holes. The transducer is mounted on the flow tube and the two ultrasonic transducers are connected with the meter head. The main points are: a rectifier is installed in the flow tube, and the rectifier is two. Two rectifiers are respectively provided corresponding to the two ultrasonic transducers, and the rectifier includes a shunt plate, one end of the shunt plate is obliquely connected with the sound beam reflector, and the ultrasonic transducer and the sound are The beam reflector corresponds, and the sound beam emitted by the ultrasonic transducer is reflected on the acoustic beam reflector.

The remarkable effect of this technical solution is that two ultrasonic transducers installed on the flow tube are used to collect and send ultrasonic waves in the direction of water flow to measure the flow velocity of the water, and a rectifier is added to the flow tube of the water meter for rectification, wherein the flow of the rectifier is divided. The plate is used to divide the flow of water and divide the flow. After the flow is divided by the flow dividing plate, the liquid is evenly divided into multiple strands. After the unstable state of the liquid flowing through the flow dividing plate is regulated by the multiple flow dividing plates, multiple liquids are collected again. By synthesizing a liquid, the unstable state of the liquid is well eliminated, and rectification is performed. An obliquely-connected acoustic beam reflector is used to reflect ultrasonic waves.

There are at least three shunt plates mentioned above. The insides of the shunt plates are connected. The included angles between the adjacent shunt plates are equal. One end of the shunt plate is obliquely connected to the same acoustic beam reflector. The center of the reflector is located on the centerline where the plurality of distributors intersect. The rectifier provided by this design is regular in shape, symmetrical in structure, and has good shunt effect.

The number of the above-mentioned flow diverter plates is four, and the cross-sections of the four flow diverter plates after the connection are “10” structures. With the above technical solution, the excess of the manifold will increase the pressure loss, while the rectifier plate will have less rectification effect if the manifold is too small. The rectifier composed of the four manifolds can better meet the rectification requirements.

The projection of the acoustic beam reflector in the direction of the center line intersecting the diverter plate is a circle, and the radius of the circle is smaller than the internal hole radius of the flow tube. In this design, the projection of the acoustic beam reflector in the direction of the centerline is a circle to ensure that the liquid is smoothly merged after flowing out of the manifold; and the radius of the projection circle is smaller than the diameter of the projection of the manifold in the direction of the centerline The length is to ensure that the rectifier has a liquid outflow channel.

The acoustic beam reflection surface of the acoustic beam reflector is a plane, and the other surface is an outwardly convex arc surface. The arc surface is connected to the diverter plate, and an angle between the acoustic beam reflection surface and the center line is θ. ,43.5°≤θ≤45°. The curved surface of the acoustic beam reflector in the above scheme can ensure the smooth outflow of the liquid, and the plane can be used to reflect the flow velocity and ultrasonic waves.

The diverter plate is integrally formed with the acoustic beam reflector. With this solution, the diverter plate and the acoustic beam reflector are integrally formed, and the rectifier can be obtained through a die, which is convenient in production and has good connection reliability.

A linear transition between the end of the splitter plate near the acoustic beam reflector and the acoustic beam reflector. With this design, the rectifier is easy to install.

Advantageous effect: A water meter with a rectifier according to the above technical scheme can divide and regularize the water flow in the water flow tube of the water meter, eliminate the unstable state of the water flow, and reduce the difference in flow velocity at each point of the same section, thereby increasing the water meter. Determine the accuracy of the flow.

For further understanding of the invention, the patent specification can be downloaded for detailed understanding. Download address: http://img63.ybzhan.cn/5/20140821/635442307868086610197.pdf

Past: [Instrumental invention] Three-phase high-precision multi-function energy meter [Invention of the instrument] Self-rectifying wedge-shaped flow meter [Invention of the invention] The gas flow meter [Invention of the invention] The integrated orifice flow meter Instrument invented] gas meter control valve structure

Gantry crane bridge crane is a kind of deformation, also called gantry crane. Mainly used in Outdoor Yard, loading and unloading of goods, the bulk of the field. Its metal structure as a door shaped frame, bearing girder installation of two legs can be directly in the ground track walk, at both ends of a main beam can with cantilever beam. Gantry crane has the space utilization rate is high, and large working range, adapt to wide, general characteristics, widely used in port yard.

Photo of our Gantry:

Formal classification

Gantry crane can be according to the structure of the door frame, according to the main beam form, according to the main beam structure, according to the use of the form of classification.

Door frame structure

Door type crane and cantilever gantry crane

Portal crane

1. the whole gantry crane: the main beam without suspension, the car in the main span of the;

2. half gantry crane: the legs are high or low, can be used in accordance with the requirements of the use of the site.

Cantilever gantry crane

1. double cantilever gantry crane: the most common form of structure, the structure of the force and the effective use of the site area are reasonable.

2. single cantilever gantry crane: the structure of the form is often due to the restrictions of the site was chosen. 

Main beam form

1. single girder

Single girder gantry crane has the advantages of simple structure, convenient manufacture and installation, its quality is small, the partial rail box frame structure. Compared with the double girder gantry crane, the overall stiffness is weaker. Therefore, when the weight is Q = 50t, S = 35m span, can use this form. L type and C type two forms of single girder gantry crane legs. L type of manufacture and installation is convenient, the situation is good, its own quality is small, however, the lifting of cargo through the supporting legs of the space is relatively small number of. The C shaped support legs are bent or bent, and the purpose is to have a larger transverse space so as to enable the goods to pass through the supporting legs.

2. double girder

Strong ability of bearing double girder gantry crane, span is big, the overall stability is good, many varieties, but its quality with the same play weight of single girder gantry crane compared to larger, the construction cost is also high. According to the different structure of the main beam, it can be divided into two types of box girder and truss. Generally use box structure. [1]

Main beam structure

1. truss beam

Structure using I-steel welded together, has the advantages of low cost, light weight, good wind resistance. However, due to the defects of the welding point and the truss, the truss beam has large deflection, small rigidity, low reliability, and so on. Applicable to the safety requirements of the lower, the smaller the weight of the site.

2. Box Girder

The use of welded steel box type structure, has the advantages of high safety, rigidity etc.. Generally used for large tonnage and large tonnage gantry crane. Such as the MGhz1200, the weight of 1200 tons, is the largest gantry crane, main girder with box girder structure. At the same time, the box beam has the disadvantages of high cost, great self important, poor wind resistance and so on.

3. cellular beam

Generally refers to the isosceles triangle honeycomb beam, the beam end is a triangle, on both sides of the diagonal with honeycomb holes, the upper part and the lower part of a chord. The cellular beam absorbs the characteristics of the truss beam and box girder, which has larger stiffness, smaller deflection and higher reliability than the truss beam. But because of the use of steel plate welding, the weight and cost ratio of truss beam Shaogao. Suitable for use in frequent or high weight field or beam field. Because of this type of beam type for patent products, so manufacturers less.

Use form

1. ordinary Longmen crane

This kind of crane adopts box type and truss structure, the most widely used. Can carry a variety of pieces of goods and bulk materials, the weight of 100 tons, the span of 4 to 39 meters. With ordinary high-level gantry crane Grab. General gantry crane is mainly refers to the hook, grab, electromagnetic, gourd gantry crane, which also includes semi gantry crane.

2. hydropower station Longmen crane

Mainly used for lifting and opening and closing the gate, but also to carry out the installation work. Up from 80 to 500 tons, the span is smaller, is 8 to 16 meters; the lifting speed is low, for 1 ~ 5 m / min. Although this crane is not a regular crane, but once the use of the work is very heavy, so to increase the level of work properly.

3. shipbuilding Longmen crane

Ship to berth assembly, standing with two lifting trolley: A has two main hook, running on a bridge on the flange of the track on; and another has a main hook and a pair of hook, run on the flange of the rail of the bridge to turn and lifting of large hull block. Lifting weight is generally 100 to 1500 tons; span of 185 meters; lifting speed of 2 ~ 15 m / min, and 0.1 to 0.5 m / min of the micro motion speed.

4. container crane in Longmen

For container terminals. Trailer bridge to quay container carrying containers unloaded from the ship

Transported to the yard or rear, carried away by the container gantry crane duima up or direct loading, accelerate the turnover of the bridge or other crane container carrying. Can be stacked high 3 to 4 layers, 6 rows of the container yard, the general use of the tire type, but also useful. Compared with the container truck, Longmen crane span and the height of both sides of the gantry are larger. In order to meet the need of the transportation of the port and wharf, the working level of this kind of crane is higher. From the lifting speed is 8 ~ 10 m / points; span across the container as needed to determine the number of rows, up to a maximum of 60 meters corresponding to 20 feet, 30 feet, 40 feet container weight were approximately 20 tons, 25 tons and 30 tons.

Gantry

Boat Gantry,Lifting Gantry,Overhead Gantry,Aluminum Gantry

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