UA7775U - Dudin's flow meter for liquid and gaseous media - Google Patents

Abstract

A flow meter for liquid and gaseous media comprises of housing, cylinder block with pistons, those have possibility of reciprocal motion inside the cylinders. Pistons placed inside the cylinders are arranged in circle and combined to a piston block with ability to perform reciprocal motion inside the cylinders and to rotate to one side with the cylinder block from non-round pinions of two-shaft, with installed coaxially shafts, asynchronous pinion reducer with variable gear ratio, one shaft of this one is rigidly connected to the cylinder block, and the other one to the piston block.

Description

Description of the invention

Dudin's flow meter is designed to measure the consumption of liquid and gaseous media. 2 The well-known PZh-4-25 type liquid volume meter, which is used to measure fuel in gas stations, is a four-cylinder hydraulic engine, the cylinders of which are cast in a common block and are located along mutually perpendicular axes. In the cylinders there are pistons, which are sealed with cuffs, and rockers, which are connected to the crankshaft, at the end of which a rotating spool is rigidly mounted.

The flow of fuel with the help of a spool is directed in turn to each of the cylinders, moving the pistons 70 inside the cylinders from one extreme position to another. The progressive movement of the pistons with the help of rocker arms is transformed into the rotational movement of the crankshaft and spool, which is transmitted to the counting equipment.

Each pair of pistons has a free movement due to the gap between the crankshaft rollers and the groove of the rocker arm, which is adjusted by the adjusting screw. As a result, with an unchanged length of the cylinder, the dead zone between the bottom of the cylinder and the piston at its dead center increases or decreases, which reduces the accuracy of the device at low costs, thus its error greatly increases.

It is a well-known flow meter for natural gas and other non-aggressive gas media of the "SZM-AKZEMAI" type, the principle of operation of which is based on the rotation of two rotors inside a common housing, the synchronous rotation of which is ensured by means of a toothed transmission, which consists of two round synchronizing gears, which are rigidly fitted on the rotor shafts and are engaged with each other. When rotating, the rotors, with their 20 side surfaces as blades, drive the gas inside the housing from the inlet to the outlet. In one revolution, a unit volume of gas is moved four times. The rotation of the rotors is transmitted to the counter.

The disadvantage of this type of flow meters is the difficulty of achieving high-quality sealing along the rotors that rub against the body parts, and with the slightest wear of the surfaces that rub against the rotors, gas leakage increases dramatically. The processed surfaces of body parts and rotors cannot be restored due to economic impracticality, therefore the service life of rotary flowmeters is limited.

The design of the flowmeter developed by the authors is also a two-rotor one (Fig. 2), in which four measuring chambers work according to the principle of moving round pistons, which are sealed with cuffs or sealed rings. inside the cylinders of the toroidal type at an angle of 602, which allows you to replace the rings when they are worn by 30 degrees, to repair and restore the necessary clearances, extending the service life of the flowmeter. what-

The flow meter claimed by the authors is a birotor pneumohydraulic engine with toroidal m cylinders (1) with pistons (2), which have the possibility of reciprocating movement inside the cylinders, in addition, the toroidal type cylinders are combined into a block of cylinders (3), located in a circle, the pistons (2) are located inside the cylinders (1), combined into a block of pistons (4), located in a circle with the possibility of making

From reciprocating movements inside the cylinders and rotate in one direction together with the block of cylinders with a periodically changing speed from two pairs of non-circular gears (5) and (b) a two-shaft with coaxially located shafts (7 and 8) asynchronous gear reducer (9) with a variable transmission pitch, one shaft (7) of which is rigidly connected to the cylinder block (3), and the second (8) - to the piston block (4) and spool (10). -

The working body (liquid or gas) enters the cylinder (1) with the help of the spool (10), moving the piston (2) from one extreme position to another. The forward movement of the piston inside the cylinder c is transformed into the rotary movement of the shaft of the piston block (8) and through the magnetic coupling (11) is transmitted to the counting device (12). From the rotation of the shaft of the piston block (8) and the shaft of the cylinder block (7) in reverse ratchet (bypass) clutch (13) is provided on the side.

Figure 1 shows the general view of the flow meter. -I 15 Fig. 2 is a diagram of the arrangement of toroidal measuring cylinders with pistons.

Fig. 3 is a diagram of the mutual arrangement of non-circular gears. - And Literature. -And 1. Patent Mo30414 (gy), "Dudin's asynchronous gearbox with variable pre-flow ratio". 2. Patent Мо58099А (ША) "Dudin's bi-rotational compressor with toroidal pistons. page 50 3. Patent Мо38857 (ги) "Rotatory hermetic compressor with toroidal pistons". 4. Technical description and operating instructions. Column 1. KED-50. " Nara-27" Ed. Derzhkomnaftaprodukt

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Claims (1)

The formula of the invention The flow meter for liquid and gaseous media consists of a body, a block of cylinders with pistons that have the possibility of reciprocating movement inside the cylinders, which is distinguished by the fact that it is of the toroidal M type, the pistons located in a circle are placed inside the cylinders and connected to the block of pistons , are located around the circle with the ability to make reciprocating movements inside the cylinders and rotate in one direction with the cylinder block from the non-circular gears of a two-shaft with coaxially located shafts of an asynchronous/one-gear reducer with a variable transmission ratio, one shaft of which is rigidly connected to the block one with cylinders, and the other with a block of pistons. Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2005, M 7, 15.07.2005. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. from the village and? -I -I -I «claim 50 So 60 b5