SU752252A1

SU752252A1 - Gas pressure regulator

Info

Publication number: SU752252A1
Application number: SU782648452A
Authority: SU
Inventors: Михаил Венеаминович Малиованов
Original assignee: Тульский Политехнический Институт
Priority date: 1978-07-24
Filing date: 1978-07-24
Publication date: 1980-07-30

Description

(54) РЕГУЛЯТОР ДАВЛЕНИЯ ГАЗА(54) GAS PRESSURE REGULATOR

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Изобретение относитс к пневмоав,- тематике и может быть использовано в системах регулировани давлени газа .JThis invention relates to a pneumatic conditioner and can be used in gas pressure control systems.

Известен регул тор давлени газа, содержащий кЬрпус с- расположенным в нем чувствительным элементом, св занным с регулирующим органом 1.A gas pressure regulator is known, which contains a collar with a sensitive element located in it and associated with the regulator 1.

Недостатком этого регул тора вл -JQ етс низка надежность при малых расходах (менее 0,1 г/с).The disadvantage of this regulator is low reliability at low flow rates (less than 0.1 g / s).

Это объ сн етс тем, что в любой конструкции регулирующего органа типа клапай-седло- дросселирование га- 5 за осуществл етс в узком кольцевом зазоре между элементами пары. Мала радиальна прот женность зоны дросселировани приводит к тому, что создание требуемого малого расхода 20 через нее можно осуществить лишь при посадке и гарантированном поджатии клапана к седлу. В этом случае дросселирование газа происходит при прохождении его через деформировав- 25 шиес микронеровности клапана и седла . Указанное течение,имеет нерегу- л рный характер - на него существенное вли ние оказывают эксплуатационные факторы (температура, наработ- зоThis is due to the fact that in any design of a regulator of the valve-saddle-throttling type, gas-5 is carried out in a narrow annular gap between the elements of the pair. The small radial extent of the throttling zone leads to the fact that the creation of the required small flow rate 20 through it can be accomplished only with the landing and a guaranteed preload of the valve to the saddle. In this case, the throttling of the gas occurs when it passes through the deformed-25 shear irregularities of the valve and seat. The indicated flow has an irregular character - it is significantly affected by operational factors (temperature, time

ка, физико-механические свойства поверхности и т.п.). Поэтому газовые регул торы с регулирующим органом, выполненным в виде пары клапан-седло , на малых расходах функционируют ненадежно.ka, physicomechanical properties of the surface, etc.). Therefore, gas regulators with a regulator made in the form of a valve-seat pair do not operate reliably at low flow rates.

Наиболее близким техническим решением к изобретению вл етс регул тор давлени газа, содержащий корпус с расположенными в нем подпружиненным чувствительным элементом и регулирующим органом 2.The closest technical solution to the invention is a gas pressure regulator, comprising a housing with a spring-loaded sensing element located therein and a regulating body 2.

Недостатком известного регул тора также вл етс низка надежность при малых расходах.A disadvantage of the known regulator is also low reliability at low costs.

Цель изобретени - повышение надежности газового регул тора давлени при работе на малых расха дах (менее 0,1 г/с).The purpose of the invention is to increase the reliability of the gas pressure regulator when operating at low flow rates (less than 0.1 g / s).

Claims

The goal is achieved by the fact that, in a known gas pressure regulator, the regulator is made in the form of two plane-parallel plates with holes, the first of which is fixed in the housing, and the second is connected to the sensing element, the plates being installed with a gap defined by the ratio ei 0,051 ., where C, is the height of the gap, b is the length of the gap, by the fact that in the first plate the hole is located in the center, and in the second plate the holes are located along the periphery, and also by the fact that the second plate is connected with the sensitive element of cut lever. FIG. 1 schematically shows the proposed controller; in fig. 2 the dependence of the ratio of flow through a known controller to flow through the proposed controller as a function of the throttle clearance height. The gas pressure regulator comprises a housing 1 with an inlet 2 and an outlet 3 with nozzles. In the housing there is 1 regulating member, made in & and de fixed flat plate 4 and movable plate 5, connected to sensing element 6 through lever 7. For passage of air in plate 4, a central opening 8 is made, and in plate 5 - opening 9 located on its periphery. The throttling of the air is carried out in the gap 10, and the adjustment of the regulator is made by the screw 11, which presses the spring 12. The regulator works as follows. When pressure is applied to the regulator inlet through the pipe 2, the air through the hole 8, the gap 10 and the holes 9, goes to the regulator outlet and through the pipe 3 leads to the consumer. The reduction of air occurs in the channel 10, the dimensions of which are C - height and L - dL must satisfy the ratio e 0.05 L. Significant length of the channel compared with its height gives a qualitatively new (in comparison with the known regulator) picture of flow reduction. The proposed design allows for low costs without landing and ensuring that the regulatory element is pressed against each other. Obtaining the required low flow rate without contact and forceful interaction of the elements of the regulator allows us to significantly increase the reliability of the controller operation due to the lack of wear and changes in the physicomechanical properties of the working surfaces of the variable throttle. The installation and regulation of pressure in the proposed controller is completely analogous to the corresponding processes of the known regulators. It is necessary to mark the purpose of implementing small strokes of the movable plate 5 and to ensure the sealing of the throttles in the absence of flow through the regulator, the sensitive element 6 is connected to the plate 5 through the lever amplifier 7. The use of this invention allows the use of gas pressure regulators of the simplest circuits ( without any additional devices). for reliable pressure control at low flow rates. Claim 1. Gas pressure regulator, comprising a housing with a spring-loaded sensitive element and a regulating body located in it, which is designed so that, in order to increase the reliability of the regulator, the regulator is made in it. two plane-parallel plates with holes, the first of which is fixed in the housing, and the second is connected to the sensing element, the plates are installed with a gap defined by a ratio of 0.05L, Cde is the height of the gap, L is the length of the gap. 2. The regulator according to claim 1, about tl and which is characterized by the fact that in the first plate the hole is located in the center, and in the second plate the holes are located along the periphery. 3. The regulator according to claim 1, characterized in that the second plate is connected to the sensor through a lever. Sources of information taken into account in the examination 1. The author's certificate of the USSR 39800, cl. G 05 D 16/10, 1970.

2. Vünsch G. Regulators of quantity and pressure. SEI, M.-L., 1932, p. 22, FIG. 21 (prototype).

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200

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FIG. 2