RU2612683C2 - Axial type control valve (versions) - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: performing an annular collar 15 with an annular tapered groove 24 and the installation of the ring wedge 20 of an annular liner 17 in it with the possibility of reciprocating wedge 20 movement within the conical groove 24 allows radial movement of the annular collar 15 sealing jaw 16.

EFFECT: reduction of the valve weight and dimensions, increasing its switching speed, reducing the probability of the collar damage during the valve switching and minimizing leakage of the working medium at high and low pressures.

28 cl, 32 dwg

Description

The invention relates to pipe fittings, in particular to axial-type control valves, designed to control pressure and flow on injection pipelines and maintain reservoir pressure, and can be used in various industries, mainly in gas, oil, chemical, metallurgical, for pumping liquid and gaseous media, including polluted ones. The invention can be applied in existing and under construction pipelines instead of imported axial-type control valves, for example, Mokveld.

BACKGROUND

The task of control valves is to maintain within the specified limits the parameters of the working medium - pressure, flow, temperature, composition and others. Such regulation occurs due to changes in the flow rate of the medium through the passage section of the regulatory body. The value of this type of reinforcement is determined by the fact that the maintenance of the normal mode and the operability of the entire automatic control system in which the control armature is built in ultimately depends on the work of the regulatory body. Therefore, each of the types of control valves should be considered as an element of the automatic process control system, which proceeds with the participation of liquid and gaseous working media and is regulated under the influence of the received command information.

Control valves include a very wide variety of designs designed to operate in a wide range of operating conditions by application, working environment, pipe diameters, working pressures, etc. Moreover, the control valves perform only a regulatory function, and tightness with a fully closed valve is not provided. Leakage of the regulator - the shutter - is allowed within a fraction of a percent of Kvy's throughput.

The main, most significant differences of control valves are the design of regulatory bodies. For example, control valves (cellular) can reduce noise, vibration and cavitation during valve operation, since there is no sharp change in the direction of medium flow during axial flow (axisymmetric flow) through the valve body, which reduces turbulence, eliminates erosion and vibration, and reduces pressure Trim reduces dynamic noise. The axial type cellular valve installed in the pipeline consists of a body with inlet and outlet nozzles, in which a piston is connected with the possibility of reciprocating movement, which is connected by means of a spindle to the actuator. The shutter-piston is made in the form of a hollow cylinder, which moves inside the cage - the guide, which is a saddle in the housing. The cage has radial holes (perforation) that allow you to control the flow rate of the medium (see RF Usvatov-Usyskin. “Let's talk about fittings.” 12 lecture-conversations for beginners. Edition 2. M., 2010. pp. 171-180 Fig. 11.6).

The axial type control valve is known from the prior art. parts of the valve, in one of these parts, in the annular cavity of which an annular cuff and an insert are placed (see US3 504884 (A), F16K 3/24, 1970).

In the specified control valve, when the closed position occurs, the medium leaks due to insufficiently completely overlapping the annular gap of the sealing part of the valve by the annular cuff, as well as insufficient constancy of the properties of the sealing materials (cuff and liner) when the operating temperature changes. In addition, the sealing collar in such a control valve is susceptible to damage during valve closure due to so-called “grip” or fretting at full pressure.

The closest analogue of the claimed invention is an axial-type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, accordingly, with channels 4 high and low 5 pressure of the working medium, in which the sleeve 7 is installed in the axial bores coaxial with the longitudinal axis 6 of the housing 1 with an annular recess 8, rigidly connected to the separator 9 with an annular recess 10, inside of which a piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 and with a radial clearance "A" between the piston 11 on one side and a parator 9 with through holes 12 and a sleeve 7 on the other hand, the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slit 14 in which the annular cuff 15 is placed with a sealing lip 16 on the side of its inner surface and protruding from the slit 14 into the radial clearance “A” and the annular insert 17, in addition, the piston 11 is connected by a spindle 18 to the drive 19 (see WO 2004/083691, F16K 3/24, 2004).

The described control valve minimizes the leakage of the working medium at various operating temperatures, and the radial clearance "A" between the piston 11 on the one hand and the separator 9 and the sleeve 7 on the other hand is locked both in the intended direction of the working medium flow and in the opposite direction of the flow, that allows you to protect structural elements from impacts of reverse flows. However, the sealing lip 16 of the cuff 15 in this control valve is susceptible to damage during valve closure due to so-called “grip” or fretting at full pressure. In addition, the speed of the switching process of the control valve is limited by the inertia of the mass of the piston 11 and the stem 18, as well as by the force in the valve actuator 19.

SUMMARY OF THE INVENTION

The present invention is the creation of modernized designs of axial-type control valves with increased reliability and increased valve service life for existing and under construction pressure pipelines.

As a result of solving this problem, when implementing the invention, new technical results can be obtained, consisting in reducing the weight and dimensions of the control valve, increasing the switching speed of the valve, reducing the likelihood of damage to the sealing collar when switching the valve and minimizing leakage of various working media at high and low operating temperatures and / or pressure.

           These technical results are achieved in that in the first version of the axial-type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, accordingly, with channels of high 4 and low 5 pressure of the working medium, in which in the axial bores coaxial with the longitudinal axis 6 of the housing 1, a sleeve 7 is installed with an annular recess 8, rigidly connected to the separator 9 with an annular recess 10, inside of which a piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance "A" between the piston 11 with one torons and a separator 9 with through holes 12 and a sleeve 7 on the other hand, and the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slit 14 in which the annular cuff 15 is placed with a sealing lip 16 on the side of its inner surface and protruding from the gap 14 into the radial clearance "A" and the annular liner 17, in addition, the piston 11 is connected by a rod 18 to the actuator 19, in addition, the sleeve 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed towards the sleeve 7, and installed in the ring at the recess 10 of the separator 9 with cylindrical outer and inner surfaces with its end part 21 with cylindrical outer and inner surfaces, and at least one through channel 23 is made in the end wall 22 of the recess 10 of the separator 9, connecting the annular cavity 13 through the through hole 12 with a channel 4 of high pressure of the working medium, while in the cuff 15 from the side of the separator 9, an annular groove 24 is made with a conical inner surface 25, inside which a wedge 20 is installed with an end gap “B” between the cuff 1 5 and the end part 21 of the annular liner 17 and the axial clearance "B" between the bottom of the annular groove 24 and the end of the wedge 20 made with a conical inner surface 26 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and recesses 10 of the separator 9 of the cavity 13, respectively, as well as with the possibility of radial movement of the sealing lip 16 inside the gap 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the wedge 20 and / and and the conical inner surface 26 of the wedge 20 with the conical inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the slot 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular cuff 15 and the sealing the sponge 16 is made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20.

Moreover, in the claimed first variant of the control valve, the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgα,

- минимальный диаметр внутренней конической поверхности 25 кольцевой канавки 24, м;Where

- the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg.

           Also, the above technical results are achieved in that in the second version of the axial-type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, accordingly, with channels of high 4 and low 5 pressure of the working medium, in which in axial bores coaxial with the longitudinal axis 6 of the housing 1, a sleeve 7 with an annular recess 8 is installed, rigidly connected to the separator 9 with an annular recess 10, inside of which a piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance "A" between rshnym 11 on the one hand and the separator 9 with through holes 12 and the sleeve 7 on the other hand, and the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slot 14, which contains the annular cuff 15 with the sealing lip 16 on its side the inner surface and protruding from the gap 14 into the radial clearance "A" and the annular liner 17, in addition, the piston 11 is connected by a rod 18 to the actuator 19, in addition, the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed towards the sleeve 7, and mouth mounted in the annular recess 10 of the separator 9 with cylindrical outer and inner surfaces with its end part 21 with cylindrical outer and inner surfaces, and at least one through channel 23 is made in the end wall 22 of the recess 10 of the separator 9, connecting the annular cavity 13 through the through a hole 12 with a channel 4 of high pressure of the working medium, while in the cuff 15 from the side of the separator 9 is made an annular groove 24 with a conical inner surface 25, inside which a wedge 20 with an end gap of "B between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance "B" between the bottom of the annular groove 24 and the end of the wedge 20 made with a cylindrical inner surface 28 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular the liner 17 and the recesses 10 of the separator 9 of the cavity 13, respectively, and also with the possibility of radial movement of the sealing lip 16 inside the gap 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter ru 27 of the end face of the cylindrical wedge 20 with the conical inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular cuff 15 and the sealing lip 16 are made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20.

Moreover, in the claimed second variant of the control valve, the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgβ,

- минимальный диаметр внутренней конической поверхности 25 кольцевой канавки 24, м;Where

- the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

β is the angle of inclination of the inner conical surface 25 of the annular groove 24 to the inner surface of the separator 9, deg.

In addition, the above technical results are also achieved by the fact that in the third embodiment of the axial type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, accordingly, with channels of high 4 and low 5 pressure of the working medium, in which in axial bores, coaxial to the longitudinal axis 6 of the housing 1, a sleeve 7 is installed with an annular recess 8, rigidly connected to the separator 9 with an annular recess 10, inside of which a piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance A "between the piston 11 on the one hand and the separator 9 with through holes 12 and the sleeve 7 on the other hand, the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slot 14 in which the annular cuff 15 with the sealing lip 16 is placed from the side of its inner surface and protruding from the gap 14 into the radial clearance "A" and the annular liner 17, in addition, the piston 11 is connected by the rod 18 to the actuator 19, in addition, the sleeve 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 equipped with a wedge 20, directed towards W 7, and is installed in the annular recess 10 of the separator 9 with cylindrical outer and inner surfaces with its end part 21 with the cylindrical outer and inner surfaces, moreover, in the end wall 22 of the recess 10 of the separator 9, at least one through channel 23 is made connecting the annular the cavity 13 through the through hole 12 with the channel 4 of the high pressure of the working medium, while in the cuff 15 from the side of the separator 9 is made an annular groove 24 with a tapered inner surface 25, inside which a wedge 20 with an end face the gap "B" between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance "B" between the bottom of the annular groove 24 and the end face of the wedge 20, made in the form of a truncated annular cone with a base radius R of the conical inner surface greater than the radius r of the end of the conical inner surface 29 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, as well as with the possibility of radial movement of the sealing lip the flanges 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with the contact along the inner perimeter 27 of the end face of the wedge 20 with the tapered inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the slit 14 into the radial clearance "A "Made no more than the value of the radial clearance" A ", and the annular cuff 15 and the sealing lip 16 are made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20.

Moreover, in the claimed third embodiment of the control valve, the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgβ,

- минимальный диаметр наружной конической поверхности уплотнительной губки 16, м;Where

- the minimum diameter of the outer conical surface of the sealing lip 16, m;

Δ is the depth of the groove 24 along the inner conical surface 25, m;

β is the angle of inclination of the outer conical surface of the sealing lip 16 to the inner surface of the separator 9, deg.

In addition, the above technical results are also achieved by the fact that in the fourth embodiment of the axial type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, accordingly, with channels of high 4 and low 5 pressure of the working medium, in which in axial bores, coaxial with the longitudinal axis 6 of the housing 1, a sleeve 7 with an annular recess 8 is installed, rigidly connected to the separator 9 with an annular recess 10, inside of which a piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance m "A" between the piston 11 on the one hand and the separator 9 with through holes 12 and the sleeve 7 on the other hand, and the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slot 14 in which the annular cuff 15 with a sealing sponge 16 from the side of its inner surface and protruding from the gap 14 into the radial clearance "A" and the annular liner 17, in addition, the piston 11 is connected by a rod 18 to the actuator 19, in addition, the sleeve 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed towards 7, and is installed in the annular recess 10 of the separator 9 with cylindrical outer and inner surfaces with its end part 21 with the cylindrical outer and inner surfaces, moreover, in the end wall 22 of the recess 10 of the separator 9 is made at least one through channel 23 connecting the annular cavity 13 through the through hole 12 with the channel 4 of the high pressure of the working medium, while in the cuff 15 from the side of the separator 9 is made an annular groove 24 with a cylindrical inner surface 30, inside which a wedge 20 with a torus a clearance “B” between the sleeve 15 and the end portion 21 of the annular liner 17 and an axial clearance “B” between the bottom of the annular groove 24 and the end of the wedge 20 made with a tapered inner surface 26 and a contact of at least cylindrical external and / or internal the surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, as well as with the possibility of radial movement of the sealing lip 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with internal contact the perimeter 27 of the end face of the wedge 20 and the conical inner surface 26 of the wedge 20 with the cylindrical inner surface 30 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular cuff 15 and the sealing lip 16 are made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20.

Moreover, in the claimed fourth embodiment of the control valve, the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

d _kan ≤d ^torus _kl ≤d _kan + Δ⋅tgα,

where d _channel is the diameter of the inner cylindrical surface 30 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner cylindrical surface 30, m;

α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg.

Moreover, in the claimed first, second, third and fourth versions of the control valve:

- an annular groove 24 in the cuff 15 is formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32 and its diameter d _cl equal to the diameter d _ch cylindrical outer surface 31 of the annular groove 24;

- the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and an inclination angle ϕ to the inner surface of the separator 9, equal to the angle γ of the conical outer surface 29 of the annular groove 24 to the surface of the separator 9;

- the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9 is less than the angle of inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9 ;

- the depth of the annular groove 24 from the side of the inner surface 25 is made greater than the width of the slit 14 for the sealing lip 16;

- end clearance "B" is made less than the axial clearance "B";

- in the end part 13 of the annular liner 17, a recess 35 is made in the direction of the wedge 20;

- as the structural materials of the annular liner 17 with the wedge 20 and the annular cuff 15 with the sealing lip 16 used antifriction materials.

           A distinctive feature of the described invention is that in the first version of the axial-type control valve, the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed toward the sleeve 7 and installed in the annular recess 10 of the separator 9 with a cylindrical outer and the inner surfaces of its end part 21 with cylindrical outer and inner surfaces, moreover, in the end wall 22 of the recess 10 of the separator 9 is made at least one through channel 23 connecting the ring cavity 13 through the through hole 12 with the channel 4 of the high pressure of the working medium, while in the cuff 15 from the side of the separator 9 is made an annular groove 24 with a conical inner surface 25, inside which a wedge 20 is installed with an end gap “B” between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance "B" between the bottom of the annular groove 24 and the end face of the wedge 20 made with a tapered inner surface 26 and a contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular the liner 17 and the recesses 10 of the separator 9 of the cavity 13, respectively, as well as with the possibility of radial movement of the sealing lip 16 inside the gap 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the wedge 20 and / or conical inner surface 26 the wedge 20 with the inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular cuff 15 and the seal Yelnia sponge 16 made of a material whose elasticity is selected above the annular liner material 17 and the wedge 20.

Moreover, in the claimed first variant of the control valve, the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgα,

where d ^min _Kan - the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg.

Also a distinctive feature of the described invention is that in the second version of the axial-type control valve, the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed towards the sleeve 7, and installed in the annular recess 10 of the separator 9 with cylindrical the outer and inner surfaces of its end part 21 with cylindrical outer and inner surfaces, and in the end wall 22 of the recess 10 of the separator 9, at least one through channel 23 is made connecting to the front cavity 13 through the through hole 12 with the channel 4 of the high pressure of the working medium, while in the cuff 15 from the side of the separator 9 is made an annular groove 24 with a conical inner surface 25 (the outer surface of the sealing lip 16), inside which there is a wedge 20 with an end gap " B "between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance" B "between the bottom of the annular groove 24 and the end face of the wedge 20 made with a cylindrical inner surface 28 and the contact of at least cylindrical outer and / or the inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, and also with the possibility of radial movement of the sealing lip 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the cylindrical a wedge 20 with a conical inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance " A ", and the annular cuff 15 and the sealing lip 16 are made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20.

внутреннего периметра 27 торца клина 20 выбран из условия:Moreover, in the claimed second variant of the control valve, the diameter

the inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

- минимальный диаметр внутренней конической поверхности 25 кольцевой канавки 24, м;Where

- the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

β is the angle of inclination of the inner conical surface 25 of the annular groove 24 to the inner surface of the separator 9, deg.

            In addition, a distinctive feature of the described invention is that in the third version of the axial-type control valve, the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular insert 17 is provided with a wedge 20 directed toward the sleeve 7, and installed in the annular recess 10 of the separator 9 with cylindrical outer and inner surfaces with its end part 21 with cylindrical outer and inner surfaces, and at least one through channel 23 is made in the end wall 22 of the recess 10 of the separator 9, I connect the annular cavity 13 through the through hole 12 with the channel 4 of the high pressure of the working medium, while in the cuff 15 from the side of the separator 9 is made an annular groove 24 with a tapered inner surface 25, inside which is installed a wedge 20 with an end gap "B" between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance "B" between the bottom of the annular groove 24 and the end face of the wedge 20, made in the form of a truncated annular cone with a base radius R of the conical inner surface greater than the radius r of the end of the conical inner surface 29 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, as well as with the possibility of radial movement of the sealing lip 16 inside the gap 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with the contact along the inner perimeter 27 of the end face of the wedge 20 with the conical inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance A ”is made not larger than the radial clearance“ A ”, and the annular collar 15 and the sealing lip 16 are made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20.

Moreover, in the claimed third embodiment of the control valve, the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgβ,

where d ^min _Kan - the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

β is the angle of inclination of the inner conical surface 25 of the annular groove 24 to the inner surface of the separator 9, deg.

In addition, a distinctive feature of the described invention is that in the fourth version of the axial-type control valve, the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed toward the sleeve 7 and installed in the annular recess 10 of the separator 9 with cylindrical outer and inner surfaces with its end part 21 with cylindrical outer and inner surfaces, and at least one through channel 23 is made in the end wall 22 of the recess 10 of the separator 9, the annular cavity 13 through the through hole 12 with the channel 4 of the high pressure of the working medium, while in the cuff 15 from the side of the separator 9 is made an annular groove 24 with a cylindrical inner surface 30, inside which there is a wedge 20 with an end gap "B" between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance "B" between the bottom of the annular groove 24 and the end face of the wedge 20 made with a conical inner surface 26 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, and also with the possibility of radial movement of the sealing lip 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the wedge 20 and the conical inner surface 26 of the wedge 20 with a cylindrical inner surface 30 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", annular lip 15 and sealing lip 16 made of a material whose elasticity is selected above the annular liner material 17 and the wedge 20.

внутреннего периметра 27 торца клина 20 выбран из условия:Moreover, in the claimed fourth embodiment of the control valve, the diameter

the inner perimeter 27 of the end face of the wedge 20 is selected from the condition:

where d _channel is the diameter of the inner cylindrical surface 30 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner cylindrical surface 30, m;

α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg.

Moreover, in the claimed first, second, third and fourth versions of the control valve:

- an annular groove 24 in the cuff 15 is formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32 and its diameter d _cl equal to the diameter d _ch cylindrical outer surface 31 of the annular groove 24;

- the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and an inclination angle ϕ to the inner surface of the separator 9 equal to the angle γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9;

- the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9 is less than the angle of inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9 ;

- the depth of the annular groove 24 from the side of the inner surface 25 is made greater than the width of the slit 14 for the sealing lip 16;

- end clearance "B" is made less than the axial clearance "B";

- in the end part 13 of the annular liner 17, a recess 35 is made in the direction of the wedge 20;

- as the structural materials of the annular liner 17 with the wedge 20 and the annular cuff 15 with the sealing lip 16 used antifriction materials.

Thus, the distinctive features of the described invention, in accordance with the above four options, are:

- placement in the annular cavity 13 with the slot 14 of the cuff 15 with the annular groove 24, the inner surface of which is the outer surface of the sealing lip 16 of the cuff 15 and the annular liner 17 with the wedge 20, configured to reciprocate the wedge 20 inside the annular groove 24 along the longitudinal axis 6 of the housing 1 under the influence of a high-pressure working medium entering the cavity 13 through the through channels 23 in the end wall 22 of the separator 9, connecting the cavity 13 through the through holes 12 with the channel 4 high d pressure of the working medium, as well as the implementation of the inner surface of the wedge 20 conical, and the outer surface of the sealing lip 16 is also conical, and at the same time made with the possibility of radial movement in the slit 14, due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 the end face of the wedge 20 and / or the conical inner surface 26 of the wedge 20 with the outer conical surface of the sealing lip 16 made of a material whose elasticity is selected above the material of the annular liner 17 wedge 20, or

- placement in the annular cavity 13 with the gap 14 of the cuff 15 with the annular groove 24, the inner surface 25 of which is the outer surface of the sealing lip 16 of the cuff 15 and the annular liner 17 with the wedge 20, made with the possibility of reciprocating movement of the wedge 20 inside the annular groove 24 along the longitudinal axis 6 of the housing 1 under the influence of a high-pressure working medium entering the cavity 13 through the through channels 23 in the end wall 22 of the separator 9, connecting the cavity 13 through the through holes 12 with the channel 4 high pressure of the working medium, as well as the implementation of the inner surface of the wedge 20 cylindrical and the outer surface of the sealing lip 16 conical, and at the same time made with the possibility of radial movement in the slit 14, due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face a cylindrical wedge 20 with an outer conical surface of the sealing lip 16 made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20, or

- placement in the annular cavity 13 with the slot 14 of the cuff 15 with the annular groove 24, the inner surface 25 of which is the outer surface of the sealing lip 16 of the cuff 15 and the annular liner 17 with the wedge 20, made in the form of a truncated annular cone with a base radius R of the conical inner surface larger radius r of the end face of the conical inner surface 29, as well as with the possibility of reciprocating movement of the wedge 20 inside the annular groove 24 along the longitudinal axis 6 of the housing 1 under the influence of the working medium the pressure entering the cavity 13 through the through channels 23 in the end wall 22 of the separator 9, connecting the cavity 13 through the through holes 12 with the channel 4 of the high pressure of the working medium, as well as the implementation of the inner surface of the wedge 20 conical, and the outer surface of the sealing lip 16 also conical and with the possibility of radial movement in the slit 14, due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the wedge 20 with a conical outer surface itelnoy sponge 16 made of a material whose elasticity is selected above the annular liner material 17 and wedge 20, or

- placement in the annular cavity 13 with the slot 14 of the cuff 15 with the annular groove 24, the inner surface 30 of which is the outer surface of the sealing lip 16 of the cuff 15 and the annular liner 17 with the wedge 20, configured to reciprocate the wedge 20 inside the annular groove 24 along the longitudinal axis 6 of the housing 1 under the influence of a high-pressure working medium entering the cavity 13 through the through channels 23 in the end wall 22 of the separator 9, connecting the cavity 13 through the through holes 12 with the channel 4 high pressure of the working medium, as well as the implementation of the inner surface of the wedge 20 conical and the outer surface of the sealing lip 16 cylindrical, and at the same time made with the possibility of radial movement in the slit 14, due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face wedge 20 and conical inner surface 26 of the wedge 20 with the outer cylindrical surface of the sealing lip 16 made of a material whose elasticity is selected above the material of the annular liner 17 and wedge 20, which ensures the achievement of new technical results, which include reducing the weight and dimensions of the control valve, increasing the switching speed of the valve, reducing the likelihood of damage to the sealing collar when closing the valve, and minimizing leakage of various media at high and low operating temperatures and / or pressures.

It should be emphasized that only the entire specified set of essential features provides a solution to the problem of the invention and obtaining the above new technical results.

The fact is that the placement in the annular cavity 13 of the annular cuff 15 with the sealing lip 16 and the annular liner 17 with a wedge 20 installed in the annular groove 24 of the cuff 15 in the immediate vicinity of the edge of the groove 24 with the control valve open (open piston 11), and when the control valve is closed (the locking position of the piston 11) allows the wedge 20 of the liner 17 under the influence of the working medium from the side of the high pressure channel 4 (acting through the through channels 23 on the end of the liner 17) to move along the longitudinal axis 6 of the housing 1 towards the bottom of the groove 24 and, by acting on the outer surface of the sealing lip 16, move the sealing lip 16 of the annular collar 15 inside the slot 14 in the direction of the piston 11, which is facilitated by the manufacture of the annular collar 15 and the sealing lip 16 from a material whose elasticity is selected above the material of the wedge 20 and the annular liner 17, and thus securely seal the radial clearance “A” between the sleeve 7, the separator 9 and the piston 11 with a sponge 16 of the annular collar 15, and also reduce the force the actuator 19 and to eliminate the destruction of the annular cuff 15 by limiting the stroke of the annular bushing 17 on the fluid pressure forces, i.e. to complete the task of the invention.

The use of axial type control valves according to the claimed invention improves the efficiency and reliability, as well as increase the service life of control valves in comparison with known analogues.

That is, the invention allows to achieve a technical result unattainable for known analogues.

An analysis of the solutions known from the prior art did not reveal a device that matches the described invention in the totality of the essential features included in the independent claims, which indicates that the present invention meets the patentability condition of "novelty."

The prior art does not reveal the distinctive features of the invention and their effect on the technical result is not established.

Thus, the present invention meets the condition of patentability "inventive step", because for a specialist, it does not explicitly follow from the prior art.

The present invention meets the condition of patentability "industrial applicability".

LIST OF DRAWINGS

In FIG. 1 shows a cross section of the inventive axial type control valve; in FIG. 2 shows the seal assembly between the sleeve, the separator and the piston in the closed position of the valve; in FIG. 3 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and conical inner surfaces with the same angles to the surface of the separator 9 with the valve open; in FIG. 4 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and conical inner surfaces with the same angles to the surface of the separator 9 when the valve is closed; in FIG. 5 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and conical inner surfaces with different angles of inclination to the surface of the separator 9 with the valve open; in FIG. 6 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and conical inner surfaces with different angles of inclination to the surface of the separator 9 with the valve closed; in FIG. 7 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with the same angles of inclination of the conical external surfaces to the surface of the separator 9 and the conical internal surfaces to the surface of the separator 9 valve position; in FIG. 8 shows a first embodiment of a control valve in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with the same angles of inclination of the conical external surfaces to the surface of the separator 9 and the conical internal surfaces to the surface of the separator 9 in the closed position Valve in FIG. 9 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with the same angles of inclination of the conical external surfaces to the surface of the separator 9 and different angles of inclination of the conical internal surfaces to the surface of the separator 9 with the valve open; in FIG. 10 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with the same angles of inclination of the conical external surfaces to the surface of the separator 9 and different angles of inclination of the conical internal surfaces to the surface of the separator 9 with the valve closed; in FIG. 11 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with different angles of inclination of the conical external surfaces to the surface of the separator 9 and the same angles of inclination of the conical internal surfaces to the surface of the separator 9 with the valve open; in FIG. 12 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with different angles of inclination of the conical external surfaces to the surface of the separator 9 and the same angles of inclination of the conical internal surfaces to the surface of the separator 9 with the valve closed; in FIG. 13 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with different angles of inclination of the conical external and external surfaces to the surface of the separator 9 with the valve open; in FIG. 14 shows a first embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical external and internal surfaces with different angles of inclination of the conical external and external surfaces to the surface of the separator 9 with the valve closed; in FIG. 15 shows a second embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are respectively made with conical and cylindrical inner surfaces and cylindrical outer surfaces with the valve open; in FIG. 16 shows a second embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are respectively made with conical and cylindrical inner surfaces and cylindrical outer surfaces with the valve closed; in FIG. 17 shows a second embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are respectively made with conical and cylindrical inner surfaces and conical outer surfaces with the same angles to the surface of the separator 9 when the valve is open; in FIG. 18 shows a second embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are respectively made with conical and cylindrical inner surfaces and conical outer surfaces with the same angles to the surface of the separator 9 when the valve is closed; in FIG. 19 shows a second embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are respectively made with conical and cylindrical inner surfaces and conical outer surfaces with different angles of inclination to the surface of the separator 9 with the valve open; in FIG. 20 shows a second embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are respectively made with conical and cylindrical inner surfaces and conical outer surfaces with different angles of inclination to the surface of the separator 9 when the valve is closed; in FIG. 21 shows a third embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and conical inner surfaces with different angles of inclination to the surface of the separator 9 with the valve open; in FIG. 22 shows a third embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and conical inner surfaces with different angles of inclination to the surface of the separator 9 with the valve closed; in FIG. 23 shows a third embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical outer surfaces with the same angles to the surface of the separator 9 and conical inner surfaces with different angles to the surface of the separator 9 in the open position Valve in FIG. 24 shows a third embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical outer surfaces with the same angles to the surface of the separator 9 and conical inner surfaces with different angles to the surface of the separator 9 in the closed position Valve in FIG. 25 shows a third embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical outer and inner surfaces and different angles of inclination to the surface of the separator 9 with the valve open; in FIG. 26 shows a third embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with tapered outer and inner surfaces and different angles of inclination to the surface of the separator 9 with the valve closed; in FIG. 27 shows a fourth embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and, accordingly, cylindrical and conical inner surfaces with the valve open; in FIG. 28 shows a fourth embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with cylindrical outer surfaces and, accordingly, cylindrical and conical inner surfaces with the valve closed; in FIG. 29 shows a fourth embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical outer surfaces with the same inclination angles to the surface of the separator 9 and, accordingly, the cylindrical and conical inner surfaces when the valve is open; in FIG. 30 shows a fourth embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical outer surfaces with the same inclination angles to the surface of the separator 9 and, accordingly, the cylindrical and conical inner surfaces when the valve is closed;

in FIG. 31 shows a fourth embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical outer surfaces with different angles of inclination to the surface of the separator 9 and, accordingly, cylindrical and conical inner surfaces when the valve is open; in FIG. 32 shows a fourth embodiment of a control valve, in which the annular groove 24 in the cuff 15 and the wedge 20 of the annular liner 17 are made with conical outer surfaces with different angles of inclination to the surface of the separator 9 and, accordingly, cylindrical and conical inner surfaces when the valve is closed.

DETAILED DESCRIPTION OF THE EMBODIMENTS OF THE INVENTION

The described axial type control valve is shown in FIG. 1 and comprises a housing 1 with inlet 2 and outlet 3 nozzles and, accordingly, with channels of high 4 and low 5 pressure of the working medium. In the axial bores of the housing 1, coaxial to the longitudinal axis 6 of the housing 1, a sleeve 7 is installed in which an annular recess 8 is made, and a separator 9 in which an annular recess 10 is made. Moreover, the sleeve 7 is rigidly connected to the separator 9, and inside the sleeve 7 and the separator 9, a piston 11 is coaxially placed, which is arranged to reciprocate along the longitudinal axis 6 of the housing 1. Between the sleeve 7 and the separator 9 on the one hand and the piston 11 on the other hand, a radial clearance “A” is provided. The separator 9 separates the inlet pipe 2 and the associated channel of high pressure 4 of the working medium and the outlet pipe 3 and the associated channel of low 5 pressure of the working medium. The separator 9 is equipped with through holes (or profile windows) 12 connecting the channels of high 4 and low 5 pressure of the working medium and allowing to regulate the flow of the working medium.

The annular recess 8 of the sleeve 7 and the annular recess 10 of the separator 9 form a closed annular cavity 13 with an annular gap 14 formed by the sleeve 7 and the separator 9, which allows placement of the annular collar 15 in the cavity 13, and the sealing lip 16 placed on the side in the slit 14 the inner surface of the annular cuff 15 and protruding from the annular gap 14 into the radial clearance "A" (see Fig. 2). Moreover, the seal installed in the cavity 13 is made of two parts - the annular cuff 15 and the annular liner 17, made with the possibility of reciprocating movement inside the annular cavity 13 following the reciprocating movement of the piston 11 along the inner surface of the separator 9, which is connected by a rod 18 for its movement with drive 19. Preferably, for ease of assembly, most of the annular collar 15 is placed in the annular recess 8 of the sleeve 7, and most of the annular liner 17 is placed in a front recess 10 of the separator 9 (see Fig. 2).

For the manufacture of the annular liner 17, it is advisable to use structural materials with a low coefficient of friction, for example caprolon or aluminum. The annular liner 17 is provided with a wedge 20, the tapering part of which is directed towards the sleeve 7, and the end part 21 is made with annular cylindrical outer and inner surfaces, made with the possibility of longitudinal movement of the annular liner 17 along the annular cylindrical outer and inner surfaces of the recess 10 of the separator 9, and at least one of these surfaces of the recess 10 performs the function of a guide for the annular liner 17. In addition, in the end wall of the recess 10 of the separator 9 is made, m nshey least one through passage 23, which connects the annular cavity 13 through the through holes 12 with the channel 4, the high pressure working fluid. The diameter of the through channels 23 and their number provide throttling of the working medium when the control valve is closed.

At the end of the annular cuff 15 from the side of the separator 9, an annular groove 24 is made with a conical 25 (see Fig. 3 - Fig. 26) or cylindrical 30 (see Fig. 27 - Fig. 32) inner surface, which is also the outer annular sealing surface the jaw 16 and the guide for the wedge 20. The inner surface of the annular wedge 20, as well as the inner surface of the annular groove 24, is configured to install a narrow end of the wedge 20 inside the annular groove 24 in the immediate vicinity of the edge of the groove 24 and the contact along the inner perimeter 27 is narrow end of the wedge 20 with the inner surface of the annular groove 24 when the valve is open (open position of the piston 11). When the valve is closed (the locking position of the piston 11) under the influence of high pressure of the working medium entering the cavity 13 through the through holes 12 and channels 23, the wedge 20 moves along the annular groove 24 towards its bottom. The diameter of the inner surface at the end of the wedge 20 is made not less than the diameter of the inner surface at the end of the groove 24, which ensures constant contact of the end of the wedge 20 with the outer surface 25 of the sealing lip 16 with increasing radial force on the sealing lip 16 as the end of the wedge 20 goes deeper into the groove 24 and thereby allows you to move the sealing lip 16 along the gap 14 towards the piston 11 and thus securely seal the radial clearance "A" between the sleeve 7 by the lip 16 of the sleeve 15 Ator 9 and piston 11.

The size of the protruding portion of the sealing lip 16 from the gap 14 into the radial clearance "A" is preferably made no more than the value of the radial clearance "A".

In accordance with the first embodiment of the inventive control valve, the inner surface 25 of the annular groove 24 in the cuff 15 (the outer surface of the sealing lip 16) and the inner surface 26 of the wedge 20 of the annular liner 17 are conical with the same angles of inclination, respectively, β and α to the inner surface of the separator 9 (see Fig. 3, Fig. 4, Fig. 7, Fig. 8, Fig. 11 and Fig. 12) or with an angle of inclination β of the inner surface 25 of the groove 24 to the surface of the separator 9 is greater than the angle of inclination α of the inner surface 26 20 wedge to sep surface Rtor 9 (see. Fig. 5, Fig. 6, Fig. 9, Fig. 10, Fig. 13 and Fig. 14).

Moreover, an annular groove 24 in the cuff 15 can be formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32. The ring groove diameter d _ch cylindrical outer surface 31, 24 is equal to the diameter d of the cylindrical outer surface of the _cells 32 wedge 20 (see. Fig. 3 and Fig. 4, as well as Fig. 5 and Fig. 6).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. The inclination angle ϕ of the conical outer surface 34 to the inner surface of the separator 9 is made equal to the inclination angle γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig. 7 and Fig. 8, as well as Fig. 9 and Fig. 10).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. Moreover, the angle of inclination ϕ of the conical external surface 34 to the inner surface of the separator 9 is smaller than the angle of inclination γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig. 7 and Fig. 8, as well as Fig. 13 and Fig. 14).

внутреннего периметра 27 торца клина 20 для первого варианта заявляемого регулирующего клапана выбран из условия:Diameter

the inner perimeter 27 of the end face of the wedge 20 for the first embodiment of the inventive control valve is selected from the condition:

- минимальный диаметр внутренней конической поверхности 25 кольцевой канавки 24, м;Where

- the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg. In accordance with a second embodiment of the inventive control valve, the inner surface 25 of the annular groove 24 in the sleeve 15 (the outer surface of the sealing lip 16) is conical, and the inner surface 28 of the wedge 20 of the annular liner 17 is cylindrical (see Fig. 15, Fig. 16, Fig. . 17, Fig. 18, Fig. 19 and Fig. 20).

Moreover, an annular groove 24 in the cuff 15 can be formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32. The ring groove diameter d _ch cylindrical outer surface 31, 24 is equal to the diameter d of the cylindrical outer surface of the _cells 32 wedge 20 (see FIG. 15 and FIG. 16).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. The inclination angle ϕ of the conical outer surface 34 to the inner surface of the separator 9 is made equal to the inclination angle γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig. 17 and Fig. 18).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. In this case, the angle of inclination ϕ of the conical external surface 34 to the inner surface of the separator 9 is smaller than the angle of inclination γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig. 19 and Fig. 20).

внутреннего периметра 27 торца клина 20 для второго варианта заявляемого регулирующего клапана выбран из условия:Diameter

the inner perimeter 27 of the end face of the wedge 20 for the second variant of the inventive control valve is selected from the condition:

- минимальный диаметр внутренней конической поверхности 25 кольцевой канавки 24, м;Where

- the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

β is the angle of inclination of the conical inner surface 25 of the annular groove 24 to the inner surface of the separator 9, deg.

In accordance with a third embodiment of the inventive control valve, the inner surface 25 of the annular groove 24 in the sleeve 15 (the outer surface of the sealing lip 16) is conical, and the wedge 20 of the annular liner 17 is made in the form of a truncated annular cone with a base radius R of the conical inner surface 29 greater than the radius r end face of the conical inner surface (see Fig. 21, Fig. 22, Fig. 23, Fig. 24, Fig. 25 and Fig. 26).

Moreover, an annular groove 24 in the cuff 15 can be formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32. The ring groove diameter d _ch cylindrical outer surface 31, 24 is equal to the diameter d of the cylindrical outer surface of the _cells 32 wedge 20 (see FIG. 21 and FIG. 22).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. The inclination angle ϕ of the conical outer surface 34 to the inner surface of the separator 9 is made equal to the inclination angle γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig. 23 and Fig. 24).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. In this case, the angle of inclination ϕ of the conical external surface 34 to the inner surface of the separator 9 is smaller than the angle of inclination γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig. 25 and Fig. 26).

внутреннего периметра 27 торца клина 20 для третьего варианта заявляемого регулирующего клапана выбран из условия:Diameter

the inner perimeter 27 of the end face of the wedge 20 for the third variant of the inventive control valve is selected from the condition:

- минимальный диаметр внутренней конической поверхности 25 кольцевой канавки 24, м;Where

- the minimum diameter of the inner conical surface 25 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner conical surface 25, m;

β is the angle of inclination of the conical inner surface 25 of the annular groove 24 to the inner surface of the separator 9, deg. In accordance with a fourth embodiment of the inventive control valve, the inner surface 30 of the annular groove 24 in the collar 15 (the outer surface of the sealing lip 16) is cylindrical, and the inner surface 26 of the wedge 20 of the annular liner 17 is conical (see Fig. 27, Fig. 28, Fig. .29, Fig. 30, Fig. 31 and Fig. 32).

Moreover, an annular groove 24 in the cuff 15 can be formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32. In this case, the diameter d _ch cylindrical outer surface 31 of the annular groove 24 is equal to the diameter dkl cylindrical outer surface 32 of the wedge 20 (see FIG. 27 and FIG. 28).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. The inclination angle ϕ of the conical outer surface 34 to the inner surface of the separator 9 is made equal to the inclination angle γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig.29 and Fig.30).

In addition, the annular groove 24 in the cuff 15 can be made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34. In this case, the angle of inclination ϕ of the conical external surface 34 to the inner surface of the separator 9 is smaller than the angle of inclination γ conical outer surface 33 of the annular groove 24 to the surface of the separator 9 (see Fig. 31 and Fig. 32).

внутреннего периметра 27 торца клина 20 для четвертого варианта заявляемого регулирующего клапана выбран из условия:Diameter

the inner perimeter 27 of the end face of the wedge 20 for the fourth variant of the inventive control valve is selected from the condition:

where d _channel is the diameter of the inner cylindrical surface 30 of the annular groove 24, m;

Δ is the depth of the annular groove 24 along the inner cylindrical surface 30, m;

α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg.

The depth of the annular groove 24 from the side of the inner surface 25 is greater than the width of the slit 14 for the annular sealing lip 16, but not more than the depth of the annular groove 24 from the side of the cylindrical outer surface 27 or from the side of the conical outer surface 29. The sealing lip 16 can be made of antifriction material , for example from ftoroplast.

The wedge 20 with the piston 11 open is installed in the annular groove 24 with the end gap “B” between the sleeve 15 and the end part 21 of the annular liner 17 and the axial clearance “B” between the bottom of the annular groove 24 and the end face of the wedge 20. Moreover, the end gap “B” less than axial clearance "B".

In the annular part 21 of the annular liner 17 made of antifriction material, a recess 35 is made towards the wedge 20, while the recess 35 is made with a concave surface of the body of revolution, for example, spherical, cylindrical, elliptical or conical in shape, which contributes to the reciprocating movement of the annular wedge 20 along the annular groove 24, as well as additional sealing of the cavity 13 from the side of the through channels 23.

The operability and reliability of the claimed variants of the control valve is confirmed by acceptance tests conducted on the valve AM332.100.160.000101.00.00.00 at NPO REGULATOR and acceptance tests conducted on the test site of shut-off and control valves of GAZPROM OJSC. In the tested control valve, the fluoroplastic (fluoroplast-4 GOST 10007-80 E) annular cuff 15 is made with the diameters of the cylindrical outer and inner surfaces, respectively, equal to 105.4 mm and 94.6 mm, a thickness equal to 5.87 mm, and an annular depth a conical groove 24 equal to 2.76 mm, and a caprolon (caprolon B TU 6-05-988) annular insert 17 is made with the diameters of the cylindrical outer and inner surfaces, respectively equal to 105.4 mm and 96.35 mm, a thickness equal to 5 , 2 mm, and a wedge length of 20 equal to 3.2 mm. Moreover, in the test control valve, the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is also made with a conical outer surface 34 and an angle of inclination ϕ to the inner cylindrical surface of the separator 9, equal to the angle of inclination γ of the conical outer surface 29 an annular groove 24 to the cylindrical surface of the separator 9, and made equal to 15 °, while the conical inner surface 26 of the wedge 20 is made with an angle of inclination to the inner cylindrical surface of of the parator 9 equal to 15 °, and the conical inner surface 25 (the outer conical surface of the sealing lip 16) of the annular groove 24 is made with an angle of inclination to the inner cylindrical surface of the separator 9 equal to 25 °.

The inventive control valve axial type operates as follows. The working medium, for example, from the pipeline enters through the inlet 2 pipe of the cast housing 1 into the high pressure channel 4, and then, when the piston 11 is open, the working medium through the through holes 12 in the separator 9 enters the low pressure channel, after which it enters through the outlet 3 pipe body 1 in the pipeline. The piston 11 is rigidly connected by spokes 36 to the rod 37, a part of the surface of which is provided with bevel teeth at an angle of 45 °, which are meshed with similar bevel teeth made on the surface of the spindle 18, the radial movement of which by the actuator 19 provides axial movement of the piston rod 37 and thus allows the piston 11 with its reciprocating motion to open or partially or completely close the through holes 12 of the separator 9 and thereby block or regulate the flow of the working medium through the description emy valve. When the piston 11 is closed, the radial clearance “A” between the side surface of the piston 11 and the separator 9 is hermetically closed by the sealing lip 16 of the annular collar 15.

In the open position of the inventive control valve, the piston 11 is shifted toward the inlet 2 of the pipe (to the right) until it stops in the housing 1, while, as shown in FIG. 3, FIG. 5, FIG. 7, FIG. 9, FIG. 11, FIG. 13, FIG. 15, FIG. 17, FIG. 19, FIG. 21, FIG. 23, FIG. 25, FIG. 27, FIG. 29 and FIG. 31, the sealing lip 16 of the annular collar 15 protrudes slightly from the gap 14 (depending on the diameter of the piston by a value of 0.1 mm to 0.5 mm) - just so much that it comes into contact with the outer surface of the piston 11 with the closing position the piston 11 and overlaps the radial clearance "A" between the side surfaces of the piston 11 and the separator 9.

In the closed position of the described control valve, as shown in FIG. 2, FIG. 4, FIG. 6 and FIG. 8, FIG. 10, FIG. 12, FIG. 14, FIG. 16, FIG. 18, FIG. 20, FIG. 22, FIG. 24, FIG. 26, FIG. 28, FIG. 30 and FIG. 32 - any increase in the pressure difference between the inlet 1 and outlet 2 nozzles of the housing 1 causes self-reinforcement of the sealing action of the sealing lip 16 of the annular collar 15 according to this invention. After the piston 11 contacts the sealing lip 16 of the annular collar 15 (the piston 11 closes the gap 14), a pressure differential occurs in the separated channels of the high 4 and low 5 pressure of the working medium. The pressure force of the working medium F acting on the end face of the wedge 20 of the annular liner 17 from the inlet 2 side of the pipe through the through channels 23 in the separator 9 moves the wedge 20 inside the annular groove 24 of the cuff 15 toward the sleeve 7 and its end face (see Fig. 6, Fig. 10, Fig. 14, Fig. 16, Fig. 18, Fig. 20, Fig. 22, Fig. 24 and Fig. 26) or the inner surface of the wedge 20 (see Fig. 2, Fig. 4, Fig. 12, Fig. 28, Fig. 30 and Fig. 32) acts on the outer surface (inner surface of the annular groove 24) of the sealing lip 16 with a force F ₁ , and thus increases the pressure the pressure of the sealing lip 16 to the piston 11, thereby improving the quality of the seal. Moreover, the combined action of the elastic deformation forces of the sealing lip 16 and the pressure forces of the working medium reliably provide a seal in class IV for control valves and in class A for shut-off valves according to GOST R 54808-2011 "Pipe fittings. Shutter tightness standards. "

The diameter and number of through channels 23 in the separator 9 is selected as minimal as possible. throttling of the working medium through small-diameter channels provides a delay in the occurrence of the force F1 when closing the inventive control valve, which, in turn, reduces the force in the actuator 19.

The piston 11, the piston rod 37 and the spindle 18 in any working position are in a state of balance of forces. Regardless of the operating pressure, the described control valve can be turned on and off without restriction. The speed of the switching process is limited by the inertia of the mass of the piston 11, rod 37 and spindle 18.

The claimed invention has advantages compared with the known designs of control valves, in particular, allows:

- minimize leakage of the working environment at high and low working pressures and / or temperatures due to the use of:

1) the elastic properties of the material of the cuff 15 with small pressure drops between the channels of high 4 and low 5 pressure of the working medium;

2) the sealing effect of the pressure of the working medium acting at large pressure drops (for example, the pressure difference in the channels of high 4 and low 5 pressure of the working medium in the axial-type control valves can reach 24 MPa, and there is a tendency to increase it);

- to increase the reliability and resource of the valve by eliminating the likelihood of damage to the sealing sleeve 15 (in particular, the sealing lip 16) during the opening movement of the piston 11 due to the return movement of the wedge 20 of the insert 17 to its original position inside the conical groove 24 of the sleeve 15;

- reduce the overall dimensions of the valve and increase its switching speed due to throttling of the working medium through the through channels 23 (the effect of pressing the sealing lip 16 against the piston 11 occurs with a time delay), which reduces the forces in the actuator 19.

Claims (44)

1. An axial-type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, respectively, with channels of high 4 and low 5 pressure of the working medium, in which an axial sleeve 7 is installed in axial bores coaxial with the longitudinal axis 6 of housing 1 recess 8, rigidly connected to the separator 9 with an annular recess 10, inside of which the piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance "A" between the piston 11 on the one hand and the separator 9 with through holes 12 and the sleeve 7 on the other from torons, moreover, the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slit 14, in which an annular cuff 15 is placed with a sealing lip 16 from the side of its inner surface and protruding from the slit 14 into the radial clearance "A" and the annular insert 17 in addition, the piston 11 is connected by a rod 18 to the actuator 19, characterized in that the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed toward the sleeve 7, and installed in the annular recess 10 of the separator 9 s cylindrical outer and inner surfaces of its end part 21 with cylindrical outer and inner surfaces, and in the end wall 22 of the recess 10 of the separator 9 is made at least one through channel 23 connecting the annular cavity 13 through the through hole 12 with the channel 4 of the high pressure medium, this in the cuff 15 from the side of the separator 9 is made of an annular groove 24 with a tapered inner surface 25, inside which a wedge 20 is installed with an end gap "B" between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance B "between the bottom of the annular groove 24 and the end face of the wedge 20 made with a conical inner surface 26 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, as well as the possibility of radial movement of the sealing lip 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the wedge 20 and / or the conical inner surface 26 of the wedge 20 with a conical the inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular collar 15 and the sealing lip 16 are made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20. 2. The control valve according to p. 1, characterized in that the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition: d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgα, where d ^min _Kan - the minimum diameter of the inner conical surface 25 of the annular groove 24, m; Δ is the depth of the annular groove 24 along the inner conical surface 25, m; α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg. 3. The control valve according to claim 1, characterized in that the annular groove 24 in the cuff 15 is made with a cylindrical outer surface 31, and the wedge 20 of the annular liner 17 is made with a cylindrical outer surface 32 and its diameter d _cl equal to the diameter d _{can of the} cylindrical outer the surface 31 of the annular groove 24. 4. The control valve according to claim 1, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9, equal to the angle the inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 5. The control valve according to claim 1, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9 is less than the angle of inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 6. The control valve according to claim 1, characterized in that the depth of the annular groove 24 from the side of the inner surface 25 is made greater than the width of the slit 14 for the sealing lip 16, and the end clearance "B" is made smaller than the axial clearance "B". 7. The control valve according to claim 1, characterized in that a recess 35 is made in the end part 13 of the annular liner 17 toward the wedge 20, and antifriction materials are used as the structural materials of the annular liner 17 with the wedge 20 and the annular cuff 15 with the sealing lip 16. . 8. An axial-type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, respectively, with channels of high 4 and low 5 pressure of the working medium, in which an axial sleeve 7 is installed in axial bores coaxial with the longitudinal axis 6 of housing 1 recess 8, rigidly connected to the separator 9 with an annular recess 10, inside of which the piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance "A" between the piston 11 on the one hand and the separator 9 with through holes 12 and the sleeve 7 on the other from torons, moreover, the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slit 14, in which an annular cuff 15 is placed with a sealing lip 16 from the side of its inner surface and protruding from the slit 14 into the radial clearance "A" and the annular insert 17 in addition, the piston 11 is connected by a rod 18 to the actuator 19, characterized in that the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed toward the sleeve 7, and installed in the annular recess 10 of the separator 9 s cylindrical outer and inner surfaces of its end part 21 with cylindrical outer and inner surfaces, and in the end wall 22 of the recess 10 of the separator 9 is made at least one through channel 23 connecting the annular cavity 13 through the through hole 12 with the channel 4 of the high pressure medium, this in the cuff 15 from the side of the separator 9 is made of an annular groove 24 with a tapered inner surface 25, inside which a wedge 20 is installed with an end gap "B" between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance B "between the bottom of the annular groove 24 and the end face of the wedge 20 made with a cylindrical inner surface 28 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, as well as the possibility of radial movement of the sealing lip 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the cylindrical wedge 20 with a tapered inner surface 25 count of the groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular collar 15 and the sealing lip 16 are made of a material whose elasticity is selected above the material of the annular insert 17 and wedge 20. 9. The control valve according to claim 8, characterized in that the diameter d ^torr _{CL of the} inner perimeter 27 of the end face of the wedge 20 is selected from the condition: d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgβ, where d ^min _Kan - the minimum diameter of the inner conical surface 25 of the annular groove 24, m; Δ is the depth of the annular groove 24 along the inner conical surface 25, m; β is the angle of inclination of the inner conical surface 25 of the annular groove 24 to the inner surface of the separator 9, deg. 10. The control valve according to claim 8, characterized in that the annular groove 24 in the cuff 15 is made with a cylindrical outer surface 31, and the wedge 20 of the annular liner 17 is made with a cylindrical outer surface 32 and its diameter d _cl equal to the diameter d _{can of the} cylindrical outer the surface 31 of the annular groove 24. 11. The control valve according to claim 8, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9, equal to the angle the inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 12. The control valve according to claim 8, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9 is less than the angle of inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 13. The control valve according to claim 8, characterized in that the depth of the annular groove 24 from the side of the inner surface 25 is made greater than the width of the slit 14 for the sealing lip 16, and the end clearance "B" is made smaller than the axial clearance "B". 14. The control valve according to claim 8, characterized in that a recess 35 is made in the end portion 13 of the annular liner 17 toward the wedge 20, and antifriction materials are used as the structural materials of the annular liner 17 with the wedge 20 and the annular cuff 15 with the sealing lip 16. . 15. An axial-type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, accordingly, with channels of high 4 and low 5 pressure of the working medium, in which an axial sleeve 7 is installed in axial bores coaxial with the longitudinal axis 6 of housing 1 recess 8, rigidly connected to the separator 9 with an annular recess 10, inside of which the piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance "A" between the piston 11 on the one hand and the separator 9 with through holes 12 and the sleeve 7 on the othertorons, moreover, the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slit 14, in which an annular cuff 15 is placed with a sealing lip 16 from the side of its inner surface and protruding from the slit 14 into the radial clearance "A" and the annular insert 17 in addition, the piston 11 is connected by a rod 18 to the actuator 19, characterized in that the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed toward the sleeve 7, and installed in the annular recess 10 of the separator 9 s cylindrical outer and inner surfaces of its end part 21 with cylindrical outer and inner surfaces, and in the end wall 22 of the recess 10 of the separator 9 is made at least one through channel 23 connecting the annular cavity 13 through the through hole 12 with the channel 4 of the high pressure medium, this in the cuff 15 from the side of the separator 9 is made of an annular groove 24 with a tapered inner surface 25, inside which a wedge 20 is installed with an end gap "B" between the cuff 15 and the end part 21 of the annular liner 17 and the axial clearance "B" between the bottom of the annular groove 24 and the end face of the wedge 20, made in the form of a truncated annular cone with a base radius R of the conical inner surface greater than the radius r of the end of the conical inner surface 29 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, as well as with the possibility of radial movement of the sealing lip 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 s by a contact along the inner perimeter 27 of the end face of the wedge 20 with the conical inner surface 25 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular cuff 15 and the sealing lip 16 is made of a material whose elasticity is selected above the material of the annular liner 17 and the wedge 20. 16. The control valve according to p. 15, characterized in that the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition: d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgβ, where d ^min _Kan - the minimum diameter of the inner conical surface 25 of the annular groove 24, m; Δ is the depth of the annular groove 24 along the inner conical surface 25, m; β is the angle of inclination of the inner conical surface 25 of the annular groove 24 to the inner surface of the separator 9, deg. 17. The control valve according to claim. 15, characterized in that the annular groove 24 in the cuff 15 is formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32 and its diameter d _cl equal to the diameter d of the cylindrical outer _kan the surface 31 of the annular groove 24. 18. The control valve according to p. 15, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9, equal to the angle the inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 19. The control valve according to p. 15, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9 is less than the angle of inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 20. The control valve according to p. 15, characterized in that the depth of the annular groove 24 from the side of the inner surface 25 is made greater than the width of the slit 14 for the sealing lip 16, and the end clearance "B" is made smaller than the axial clearance "B". 21. The control valve according to claim 15, characterized in that a recess 35 is made in the end portion 13 of the annular liner 17 toward the wedge 20, and antifriction materials are used as the structural materials of the annular liner 17 with the wedge 20 and the annular cuff 15 with the sealing lip 16. . 22. An axial-type control valve, comprising a housing 1 with inlet 2 and outlet 3 nozzles and, respectively, with channels of high 4 and low 5 pressure of the working medium, in which an axial sleeve 7 is installed in axial bores coaxial with the longitudinal axis 6 of housing 1 recess 8, rigidly connected to the separator 9 with an annular recess 10, inside of which the piston 11 is coaxially placed with the possibility of movement along the longitudinal axis 6 with a radial clearance "A" between the piston 11 on the one hand and the separator 9 with through holes 12 and the sleeve 7 on the othertorons, moreover, the annular recess 8 of the sleeve 7 and the recess 10 of the separator 9 form a cavity 13 with a slit 14, in which an annular cuff 15 is placed with a sealing lip 16 from the side of its inner surface and protruding from the slit 14 into the radial clearance "A" and the annular insert 17 in addition, the piston 11 is connected by a rod 18 to the actuator 19, characterized in that the cuff 15 is installed in the annular recess 8 of the sleeve 7, and the annular liner 17 is provided with a wedge 20 directed toward the sleeve 7, and installed in the annular recess 10 of the separator 9 s cylindrical outer and inner surfaces of its end part 21 with cylindrical outer and inner surfaces, and in the end wall 22 of the recess 10 of the separator 9 is made at least one through channel 23 connecting the annular cavity 13 through the through hole 12 with the channel 4 of the high pressure medium, this in the cuff 15 from the side of the separator 9 is made of an annular groove 24 with a cylindrical inner surface 30, inside which a wedge 20 is installed with an end gap "B" between the cuff 15 and the end part 21 of the annular liner 17 and the axial gap rum "B" between the bottom of the annular groove 24 and the end face of the wedge 20 made with a conical inner surface 26 and the contact of at least the cylindrical outer and / or inner surfaces of the end part 21 of the annular liner 17 and the recess 10 of the separator 9 of the cavity 13, respectively, and also with the possibility of radial movement of the sealing lip 16 inside the slit 14 due to the longitudinal movement of the wedge 20 along the annular groove 24 with contact along the inner perimeter 27 of the end face of the wedge 20 and the conical inner surface 26 of the wedge 20 with a cylindrical the inner surface 30 of the annular groove 24, in addition, the size of the protruding part of the sealing lip 16 from the gap 14 into the radial clearance "A" is made no more than the value of the radial clearance "A", and the annular collar 15 and the sealing lip 16 are made of a material whose elasticity selected above the material of the annular liner 17 and the wedge 20. 23. The control valve according to p. 22, characterized in that the diameter d ^torr _CL inner perimeter 27 of the end face of the wedge 20 is selected from the condition: d ^min _kan ≤d ^torus _kl ≤d ^min _kan + Δ⋅tgα, where d ^min _Kan - the minimum diameter of the inner cylindrical surface 30 of the annular groove 24, m; Δ is the depth of the annular groove 24 along the inner cylindrical surface 30, m; α is the angle of inclination of the conical inner surface 26 of the annular wedge 20 to the inner surface of the separator 9, deg. 24. The control valve according to claim. 22, characterized in that the annular groove 24 in the cuff 15 is formed with a cylindrical outer surface 31 and the wedge 20 of the annular insert 17 is formed with a cylindrical outer surface 32 and its diameter d _cl equal to the diameter d of the cylindrical outer _kan the surface 31 of the annular groove 24. 25. The control valve according to p. 22, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9, equal to the angle the inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 26. The control valve according to p. 22, characterized in that the annular groove 24 in the cuff 15 is made with a conical outer surface 33, and the wedge 20 of the annular liner 17 is made with a conical outer surface 34 and the angle of inclination ϕ to the inner surface of the separator 9 is less than the angle of inclination γ of the conical outer surface 33 of the annular groove 24 to the surface of the separator 9. 27. The control valve according to p. 22, characterized in that the depth of the annular groove 24 from the side of the inner surface 25 is made greater than the width of the slit 14 for the sealing lip 16, and the end clearance "B" is made smaller than the axial clearance "B". 28. The control valve according to claim 22, characterized in that a recess 35 is made in the end portion 13 of the annular liner 17 toward the wedge 20, and antifriction materials are used as the structural materials of the annular liner 17 with the wedge 20 and the annular cuff 15 with the sealing lip 16. .

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