RU213918U1 - ball valve - Google Patents

Abstract

The utility model relates to pipeline fittings and is designed to control the flow of the working medium in their transportation systems. SUBSTANCE: ball valve contains a body, a spindle, a rotary locking body with a through channel and seats. The through pipes are made with flanges that are made rotatable about the axis, the spindle seal is made with polymer seals of a V-shaped section, while the pipes with flanges are installed in the body on the thread and fix the position of the plug ball.

Description

The utility model relates to pipeline fittings and is designed to control the flow of the working medium in their transportation systems.

Known patent document RU 2135870, publ. 08/27/1999, which opens a valve with a spherical plug, having a body with two coaxial nozzles. A floating spherical plug is installed in it with the possibility of rotation from the spindle. In the locking position, when a pressure difference is created between the inlet and outlet sides, its spherical surface adjoins the sealing surface of the seat and forms a primary seal barrier with it. The flanges are integral with the valve body. The spindle is sealed with elastomer O-rings.

The disadvantages of this analogue is the lack of reliability of the sealing of the spindle and the complexity of the design. This disadvantage can lead to a violation of the tightness and the possibility of the working medium penetrating into the surrounding atmosphere, which is unacceptable in the oil and gas industry. The construction length complies with the requirements of the regulatory documentation GOST 28908-91, which requires more space for placing the crane on the pipeline. The flanges are rigidly fixed on the valve body, which reduces the ability to orient the valve relative to the axis of the passage channel.

The objective of the proposed solution is to eliminate these shortcomings.

EFFECT: possibility of installation and use of a ball valve in cramped conditions.

The technical result is achieved by a ball valve containing a body, a spindle, a rotary shut-off body with a through channel and seats. The through pipes are made with flanges that are made rotatable about the axis, the spindle seal is made with polymer seals of a V-shaped section, while the pipes with flanges are installed in the body on the thread and fix the position of the ball-plug.

The proposed device is illustrated in Fig. 1, which shows a general view of the ball valve, where the

1 - body;

2 - branch pipe;

3 - flange;

4 - spindle;

5 - ball-plug;

6 - saddle;

7 - lock washer;

8 - clamping nut;

9 - pressure washer;

10 - limiter;

11 - handle;

12, 13 - seal type "chevron";

14 - washer;

15 - elastomer seals.

The ball valve contains a body, the through pipes are made with flanges. The flanges are made rotatable relative to the axis of the product and are located on the nozzles. The body contains a spindle, a rotary locking body with a through passage and seats. The spindle seal is made according to the "chevron" type. Washer 14 is installed on spindle 4. Spindle 4 with washer 14 is installed in housing 1 from the inside of the housing. Seals 12 and 13, clamping washer 9 are installed on spindle 4. Clamping nut 8 is mounted on spindle 4 using a metric thread. The ball-plug 5 is installed in the housing 1 and engages with the spindle 4 through a groove. Seats 6 are installed in the seats of branch pipes 2. Seals 15 and flanges 3 are installed on branch pipes 2. Seal 15 is fixed on branch pipe 2 due to elastic deformation of the elastomer. Branch pipes 2 with flanges 3 are installed in the body 1 on the thread and fix the position of the ball-plug 5, pressing it from both sides with the saddles 6. The limiter 10 is installed in the body 1 by means of an interference fit. A lock washer 7 is installed on the spindle 4, a handle 11, which is fixed with a washer and a nut.

The method of sealing the spindle consists in the use of a two-piece seal of the "chevron" type in combination with a groove on the spindle.

The advantages of this design compared to other analogues of valves are as follows:

The level of manufacturability and maintainability of the sealing seal of the yoke assembly allows to increase the service life of this seal, which, in turn, allows to reduce the frequency of routine maintenance while maintaining the required level of tightness indicators.

The utility model allows expanding the technological capabilities and increasing the service life of seals while maintaining the required level of tightness indicators. This design allows the crane to be operated in confined spaces, and also makes it possible to expand the variability of the valve positioning relative to the axis of the pipeline at the installation site of the product.

The crane has a nominal diameter of the passage section from 10 to 100 mm. The material for the manufacture of body parts is low-alloy steel 09G2S or stainless steel 12X18H10T. The choice of material for body parts is determined by the climatic conditions of operation and the aggressiveness of the working environment. The yoke seal is based on the use of a chevron vee seal. It is characterized by wear resistance to abrasion and provides satisfactory tightness with a relatively small compressive force.

A distinctive feature of this crane is the construction length or connection size, which is 45% less than that regulated in accordance with GOST 28908-91. This design allows you to operate the product in cramped conditions.

The working position of the valve is not limited by the direction of the working medium and the spatial arrangement of the pipeline.

The optimal ratio of simplicity of product design and ensuring tightness indicators according to class A.

The proposed ball valve has passed all the tests, and has established itself as a reliable device, characterized by inexpensive components and a simple installation method.

Claims (2)

1. A ball valve containing a body, a spindle, a rotary shut-off body with a through channel and seats, characterized in that the through pipes are made with flanges that are made rotatable relative to the axis of the ball valve, seats are installed in the nozzle seats, while the pipes with flanges are installed in the body on the thread and fix the position of the ball-plug, pressing it from both sides with saddles. 2. A ball valve according to claim 1, characterized in that the spindle seal is made of V-shaped polymer seals.

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