阅读说明：本技术 一种阀芯、轴流式调节阀及轴流式调节阀系统 (Valve core, axial flow type regulating valve and axial flow type regulating valve system ) 是由 蔡婧 王波 王丽然 牟晓勇 王虎斌 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种阀芯、轴流式调节阀及轴流式调节阀系统。所公开的阀芯包括导向套、异形活塞杆、活塞和壳体；所述壳体沿所述轴向装配在所述导向套的腔体中,所述异形活塞杆沿所述轴向活动式装配在所述导向套的敞口端,且活塞杆活动式装配在所述壳体的开口中并延伸向壳体内的工作腔中,所述活塞将工作腔分割为两个腔体。所述轴流式调节阀包括阀体和上述阀体及阀笼。所述轴流式调节阀系统包括控制器和本发明的轴流式调节阀。本发明的集成化程度高,且方便维修。(The invention discloses a valve core, an axial flow type regulating valve and an axial flow type regulating valve system. The disclosed valve core comprises a guide sleeve, a special-shaped piston rod, a piston and a shell; the shell is axially assembled in the cavity of the guide sleeve, the special-shaped piston rod is axially movably assembled at the open end of the guide sleeve, the piston rod is movably assembled in the opening of the shell and extends into the working cavity in the shell, and the working cavity is divided into two cavities by the piston. The axial flow type regulating valve comprises a valve body, the valve body and a valve cage. The axial flow regulating valve system includes a controller and an axial flow regulating valve of the present invention. The invention has high integration degree and convenient maintenance.)

1. The valve core is characterized by comprising a guide sleeve, a special-shaped piston rod, a piston and a shell;

the guide sleeve comprises a guide sleeve wall and a cavity structure which is arranged in the guide sleeve wall along the axial direction and is provided with at least one opening at one end, at least one first flow channel is arranged in the guide sleeve wall, and the at least one first flow channel is provided with an external interface;

the special-shaped piston rod comprises a cavity structure with at least one open end and one closed end along the axial direction and a piston rod which is arranged in the cavity structure and extends towards the open end, and the outer diameter of the cavity structure is matched with the inner diameter of the cavity of the guide sleeve; the piston is arranged at the end of the extending end of the piston rod;

the shell comprises a side wall and a first working cavity which is arranged in the side wall along the axial direction and is provided with an opening at least one end, the outer diameter of the side wall is matched with the inner diameter of a cavity body of the special-shaped piston rod, the caliber of the opening is matched with the outer diameter of the piston rod, and the inner diameter of the first working cavity is matched with the outer diameter of the piston; at least two second flow passages are arranged in the side wall, and the at least two second flow passages are respectively communicated with the first working cavity;

the casing is followed the axial assembly is in the cavity of uide bushing, just two at least second runners with first runner communicates with each other, special-shaped piston rod is followed the movable assembly of axial is in the open end of uide bushing, and the movable assembly of piston rod is in the opening of casing and extend to in the working chamber in the casing, the piston is cut apart into two cavities with the working chamber, two at least second runners are located respectively with the communicating position in working chamber two cavities.

2. The valve cartridge according to claim 1, wherein at least two first oil passages are provided in the wall of the guide sleeve, and the at least two first oil passages are provided with external interfaces; the at least two second flow channels are communicated with the at least two first flow channels in a one-to-one correspondence mode.

3. The valve cartridge of claim 1, wherein a portion of the wall of the guide sleeve extends outwardly to form a projection, and the projection defines a first flow passage therein.

4. The valve cartridge according to claim 1, wherein the piston rod is provided with a mounting hole along the axial direction for mounting a displacement sensor.

5. The valve cartridge according to claim 1, wherein the guide sleeve comprises a guide sleeve wall and a cavity structure axially disposed in the guide sleeve wall and having an opening at one end and an opening at the other end, the opening being used for mounting the position sensor.

6. The valve cartridge of claim 1, further comprising a positioning magnetic ring mounted on the piston and a positioning sensor mounted in the piston rod.

7. The valve cartridge according to claim 1, wherein the other end of the working chamber of the housing in the axial direction is an open structure, and the open end is fixedly connected with the guide sleeve.

8. The valve cartridge of claim 1, wherein the open end of the guide sleeve is provided with a cage mounting structure.

9. An axial-flow type regulating valve comprises a valve body, wherein a medium channel is arranged in the valve body, and a medium inlet and a medium outlet are arranged at two ends of the medium channel; the valve core and the valve cage of claim 1 are installed in the medium channel, the outer diameter of the valve core guide sleeve and the outer diameter of the valve cage are both smaller than the outer diameter of the medium channel, the valve cage is installed at the medium outlet, the medium outlet is communicated with the medium channel through the valve cage, the open end of the valve core guide sleeve and the valve cage are assembled into a second working cavity, and the special-shaped piston rod is movably installed in the second working cavity.

10. The axial flow regulator valve of claim 9, wherein the controller mounting bore is sized to facilitate structural maintenance of the valve body interior and is located above the valve spool.

11. The axial flow regulator valve of claim 9, wherein a valve plug mounting seat is disposed in said media passage for mounting said valve plug, said valve plug mounting seat being adjacent said media inlet.

12. The axial flow regulator valve of claim 9, wherein said cage is mounted to said media outlet by a valve seat.

13. An axial flow regulating valve system comprising the axial flow regulating valve of any one of claims 9 to 12 and a controller, wherein the controller is a hydraulic controller or an electro-hydraulic controller, and the controller is provided with a flow passage inlet and outlet, and the flow passage inlet is communicated with the first flow passage through the controller mounting hole.

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a valve core, an axial flow type regulating valve and an axial flow type regulating valve system comprising a controller, which can be applied to all the fields relating to industrial process control, such as petrochemical industry, electric power, metallurgy, aerospace and the like.

Background

In industrial production fields, valves for realizing the functions of regulating, conducting and cutting off the flow of pipelines according to preset process requirements are widely applied. The valve control device is provided with several types of actuating mechanisms, such as manual, electric, pneumatic and electro-hydraulic actuating mechanisms, and the electro-hydraulic actuating mechanisms are widely applied due to the advantages of small volume, large thrust, long service life, good performance and the like, and gradually replace other types of actuating mechanisms in numerous fields.

The conventional valve is formed by connecting an electro-hydraulic actuator and a valve through a coupler, an actuating mechanism of the electro-hydraulic actuator drives a valve core of the valve to move, the traditional electro-hydraulic actuator mostly adopts a valve control type, the flow and the flow rate are controlled by a proportional valve, a complex pipeline and an external oil source are required to be connected externally, the structure is complex, the size is large, and the pollution of the oil source is easily caused.

For example, CN106641377 "intelligent electrohydraulic adjusting butterfly valve" describes an adjusting butterfly valve system composed of an electrohydraulic actuator and a butterfly valve; the invention patent CN106641378 "intelligent electrohydraulic control stop valve" describes a stop valve system composed of an electrohydraulic actuator and a stop valve; the invention patent CN106641313 "high-pressure resistant electro-hydraulic control ball valve" describes a ball valve system composed of an electro-hydraulic actuator and a ball valve. CN201621368593.8, "hydraulic integrated valve of intelligent electro-hydraulic actuator" describes a hydraulic integrated device of an electro-hydraulic actuator body, in which a hydraulic control valve and an oil port are integrated on the same valve block, and a valve block flow passage is used to replace a pipeline for connection.

CN211288943U "an integrated intelligent electricity liquid actuating mechanism" has explained a flexible hydro-cylinder that has electricity liquid actuating mechanism and has regarded as the integrated device of execution module direct drive valve plate, drives ejector pin, transfer line and valve plate motion through 2 flexible hydro-cylinders actions, plays the effect of regulation flow, needs two flexible hydro-cylinders to make the structure complicated, and the motion of flexible hydro-cylinder drives the valve plate motion through a plurality of part transmissions, and the valve plate adopts welded connection with the transfer line, and size precision and position precision are poor, can't realize the regulation of high accuracy.

In the prior art, the conventional valve is connected with the electro-hydraulic actuator through a coupling structure, and the actuating mechanism of the electro-hydraulic actuator drives the valve rod to do linear or reciprocating motion, so that the integration level is low.

Disclosure of Invention

In view of the shortcomings or drawbacks of the prior art, the present invention first provides a valve cartridge.

Therefore, the invention provides a valve core which comprises a guide sleeve, a special-shaped piston rod, a piston and a shell;

the guide sleeve comprises a guide sleeve wall and a cavity structure which is arranged in the guide sleeve wall along the axial direction and is provided with at least one opening at one end, at least one first flow channel is arranged in the guide sleeve wall, and the at least one first flow channel is provided with an external interface;

the special-shaped piston rod comprises a cavity structure with at least one open end and one closed end along the axial direction and a piston rod which is arranged in the cavity structure and extends towards the open end, and the outer diameter of the cavity structure is matched with the inner diameter of the cavity of the guide sleeve; the piston is arranged at the end of the extending end of the piston rod;

the shell comprises a side wall and a first working cavity which is arranged in the side wall along the axial direction and is provided with an opening at least one end, the outer diameter of the side wall is matched with the inner diameter of a cavity body of the special-shaped piston rod, the caliber of the opening is matched with the outer diameter of the piston rod, and the inner diameter of the first working cavity is matched with the outer diameter of the piston; at least two second flow passages are arranged in the side wall, and the at least two second flow passages are respectively communicated with the first working cavity;

the casing is followed the axial assembly is in the cavity of uide bushing, just two at least second runners with first runner communicates with each other, special-shaped piston rod is followed the movable assembly of axial is in the open end of uide bushing, and the movable assembly of piston rod is in the opening of casing and extend to in the working chamber in the casing, the piston is cut apart into two cavities with the working chamber, two at least second runners are located respectively with the communicating position in working chamber two cavities.

Optionally, at least two first oil passages are arranged in the wall of the guide sleeve, and the at least two first oil passages are provided with external interfaces; the at least two second flow channels are communicated with the at least two first flow channels in a one-to-one correspondence mode.

Optionally, a partial position of the wall of the guide sleeve extends outwards to form a protruding structure, and a first flow passage is arranged in the protruding structure.

Optionally, a mounting hole is formed in the piston rod along the axial direction, and is used for mounting the displacement sensor.

Optionally, the guide sleeve comprises a guide sleeve wall and a cavity structure which is axially arranged in the guide sleeve wall and provided with an opening at one end and an opening at the other end, and the opening is used for installing the positioning sensor.

The piston rod further comprises a positioning magnetic ring and a positioning sensor, wherein the positioning magnetic ring is arranged on the piston, and the positioning sensor is arranged in the piston rod.

Furthermore, the other end of the working cavity of the shell along the axial direction is of an open structure, and the open end is fixedly connected with the guide sleeve.

Further, the open end of the guide sleeve is provided with a valve cage mounting structure.

The invention further provides an axial flow regulating valve.

Therefore, the axial flow type regulating valve provided by the invention comprises a valve body, wherein a medium channel is arranged in the valve body, and a medium inlet and a medium outlet are arranged at two ends of the medium channel; the valve core and the valve cage of claim 1 are installed in the medium channel, the outer diameter of the valve core guide sleeve and the outer diameter of the valve cage are both smaller than the outer diameter of the medium channel, the valve cage is installed at the medium outlet, the medium outlet is communicated with the medium channel through the valve cage, the open end of the valve core guide sleeve and the valve cage are assembled into a second working cavity, and the special-shaped piston rod is movably installed in the second working cavity.

Furthermore, the aperture size of the controller mounting hole is convenient for maintaining the internal structure of the valve body, and the controller mounting hole is positioned above the valve core.

Further, a valve core mounting support is arranged in the medium channel and used for mounting the valve core, and the valve core mounting support is close to the medium inlet.

Further, the cage is mounted at the media outlet via a valve seat.

Still further, the present invention provides an axial flow regulating valve system.

Therefore, the axial flow type regulating valve system provided by the invention comprises the axial flow type regulating valve and a controller, wherein the controller is a hydraulic controller or an electro-hydraulic controller, the controller is provided with a flow channel inlet and outlet, and the flow channel inlet is communicated with the first flow channel through the controller mounting hole.

The invention has the beneficial effects that:

(1) the valve core of the invention can be driven by hydraulic pressure without mechanical transmission, thereby saving an actuating device of a controller and reducing the whole volume.

(2) The upper end cover of the axial flow type regulating valve body is designed to be used as an installation and maintenance window, so that a connecting pipeline does not need to be dismantled and a process field does not need to be damaged during fault maintenance, the maintainability of a product is improved, and the maintenance cost is reduced.

(3) The axial flow type regulating valve system adopts an integrated design, the actuator and the axial flow type regulating valve are integrally designed, an actuating mechanism and a coupling mechanism of a conventional electro-hydraulic actuator are omitted, an external pipeline and an oil tank are omitted, the product volume is reduced, the product structure is simplified, the product cost is reduced, the axial flow type regulating valve system is not limited by the position and the direction when a process pipeline is installed, and the axial flow type regulating valve system can be installed in any direction; the device is particularly suitable for places such as ships and warships with severely limited installation space and installation angle.

(4) Furthermore, the axial flow type regulating valve system adopts a pump control type closed hydraulic system, the direction and the speed of the movement of the valve are controlled through the steering direction and the rotating speed of the motor, and the motor only rotates in the movement process, so that the power consumption of the system is low; in addition, the traditional valve-controlled electro-hydraulic actuator needs an open oil tank with a large volume, and a pump-controlled oil way is a closed hydraulic system, so that the anti-pollution capacity of hydraulic oil is strong, and the maintenance-free operation can be realized for the whole life.

Drawings

FIG. 1 is a schematic view of the valve cartridge of the present invention; (a) the side view of the valve core is shown, and (B) and (c) are respectively the section view along the A-A, B-B direction in the figure (a);

FIG. 2 is a schematic view of the structure of the guide sleeve of the present invention; (a) the front view and the side view of the guide sleeve are shown, and (B) and (c) are respectively the A-A, B-B cross-sectional views of the side view;

FIG. 3 is a schematic structural view of the valve body of the present invention, wherein (a) is a front view of the valve body; (b) A-A section view of (a);

fig. 4 is a schematic structural view of an axial flow control valve and system of the present invention, wherein (a) is a front view of the axial flow control valve and system of the present invention, and (b) is a side view of the axial flow control valve and system of the present invention;

FIG. 5 is a media flow diagram within an axial flow regulator valve of the present invention;

the symbols in the figure have meanings:

1.1.1: oil filling valve, 1.1.2: level piston, 1.1.3: relief valve, 1.1.4: safety valve, 1.1.5: oil passage cover plate, 1.1.6: hydraulic control distributing valve, 1.1.7: oil pump, 1.1.8: valve body base, 1.1.9: coupling, 1.1.10: a motor;

1.2.1: upper end cap, 1.2.2: valve body, 1.2.3: valve seat, 1.2.4: valve core, 1.2.5: valve cage, 1.2.6: tightening screw, 1.2.7: an oil pipe;

1.2.4.1: special-shaped piston rod, 1.2.4.2: guide sleeve, 1.2.4.3: housing, 1.2.4.4: piston, 1.2.4.5: lock nut, 1.2.4.6: gasket, 1.2.4.7: displacement sensor, 1.2.4.8: positioning magnetic ring, 1.2.4.9: second flow channel, 1.2.4.10: second flow passage, 1.2.4.11: first flow passage, 1.2.4.12: first flow passage, 1.2.4.13: an opening;

1.2.2.1: media inlet, 1.2.2.2: medium outlet, 1.2.2.3 valve core mounting seat, 1.2.2.4: and a controller mounting hole.

Detailed Description

Unless otherwise defined, the terms herein are to be understood in accordance with the ordinary knowledge of one of ordinary skill in the art to which the invention pertains.

The directional or orientational terms "axial," "radial," "inner," "outer," and the like are used herein in accordance with the corresponding directions or orientations in the drawings.

The arrangement meaning of the invention includes opening, fixed installation, integral structure, movable installation and the like, the connection comprises fixed connection, movable connection, sealing connection and the like, and the arrangement meaning can be correspondingly understood according to the working relation between specific components and the integral function of the device.

The electro-hydraulic controller provided by the invention can realize piston motion control. Such as but not limited to the electric powered module disclosed in CN 201810587443.3.

The following detailed description of the present patent refers to the accompanying drawings and detailed description.

Example 1:

the valve core and related parts of the valve core of the embodiment are shown in figures 1 and 2, and the valve core is assembled by a shell 1.2.4.3, a special-shaped piston rod 1.2.4.1, a piston 1.2.4.4 and a guide sleeve 1.2.4.2;

as shown in fig. 2, the guide sleeve 1.2.4.2 is formed by a guide sleeve wall and a cavity or cylinder structure with an opening at one end thereof, and a first flow channel is formed in the guide sleeve wall, and a corresponding number of first flow channels can be formed according to the working requirement of the valve, and the starting position of the first flow channel is also selected according to the actual working requirement, and two first flow channels 1.2.4.11(1.2.4.12) extending along the axial direction and the radial direction of the guide sleeve are formed in the guide sleeve of the embodiment; the first flow channels are provided with external interfaces;

the overall appearance of the special-shaped piston rod 1.2.4.1 is like an E shape, namely the special-shaped piston rod comprises a cavity or cylinder body structure with one axial end open and a piston rod arranged in the cavity structure, the piston rod extends towards the open end along the axial direction, the cavity structure of the special-shaped piston rod and the piston rod are processed into a whole in the embodiment, wherein the outer diameter of the cavity structure of the special-shaped piston rod is matched with the inner diameter of the cavity structure of the guide sleeve, so that the assembling between the cavity structure of the special-shaped piston rod and the inner diameter of the cavity structure of;

the casing 1.2.4.3 is composed of a side wall and a working cavity arranged in the side wall along the axial direction, one end of the working cavity is open, the outer diameter of the side wall is matched with the inner diameter of the cavity of the special-shaped piston rod 1.2.4.1, the caliber of the opening is matched with the outer diameter of the piston rod, the inner diameter of the working cavity is matched with the outer diameter of the piston, at least two second flow passages are arranged in the side wall, particularly, the flow passages with proper quantity and proper positions can be selected according to the working requirement, and two second flow passages 1.2.4.9(1.2.4.10) with different lengths are arranged in the side wall of the casing along the axial direction and are respectively communicated with the working cavity in the casing;

the valve core is assembled by the following steps: the guide sleeve 1.2.4.2 is positioned at the outer side, the shell 1.2.4.3 is assembled in the cavity of the guide sleeve along the axial direction, the special-shaped piston rod 1.2.4.1 is assembled at the open end of the guide sleeve, and simultaneously the piston rod passes through the opening on the shell and extends into the working cavity, so that the piston at the end part of the piston rod divides the working cavity into two cavities, the parts of the two second flow passages 1.2.4.9(1.2.4.10) communicated with the working cavity in the shell are respectively positioned in the two cavities, and the two second flow passages are respectively communicated with the first flow passage 1.2.4.11 (1.2.4.12); according to the assembly mode, the dimensional size relation of each part can be generally understood as follows: the inner diameter of the cavity of the guide sleeve is approximately equal to or slightly larger than the outer diameter of the cavity of the special-shaped piston rod, the inner diameter of the cavity of the special-shaped piston rod is approximately equal to or slightly larger than the outer diameter of the side wall of the shell, the caliber of an opening at the end part of the shell is approximately equal to or slightly larger than the outer diameter of the piston rod, and the inner diameter of the working cavity of the shell is approximately equal to or slightly larger than.

In the practical scheme, the piston rod and the piston cannot be installed after being processed into a whole, and the piston rod can be installed in the shell and then connected with the piston. In a specific example, the piston 1.2.4.4 can be connected with the piston rod 1.2.4.1 by using a lock nut 1.2.4.5 and a gasket 1.2.4.6. To achieve this mounting, the other end of the housing 1.2.4.3 is open.

In some embodiments, to facilitate assembly and cooperation with other components, a portion of the wall of the guide sleeve may extend in a direction, such as a radial direction, to form a protruding structure in which the first flow passage is opened. Specifically, according to the starting position and the number of the first flow passages, a plurality of parts of the wall of the guide sleeve protrude outwards. In one embodiment, as shown in fig. 2, two local positions of the end of the guide sleeve wall in the same circumferential direction extend outward to form two independent protruding structures, wherein the two protruding structures are provided with first flow channels, and both the first flow channels are provided with external interfaces.

In some schemes, in order to realize automatic control, a positioning sensor 1.2.4.7 is installed in the valve core, specifically, an axial hole for installing the positioning sensor is opened in the piston rod of the above scheme, and a positioning magnetic ring 1.2.4.8 is installed on the piston. In a further scheme, the positioning sensor 1.2.4.7 extends out of the other end of the guide sleeve, and an opening 1.2.4.13 for installing the positioning sensor 1.2.4.7 is formed in the end portion of the corresponding guide sleeve, namely, the positioning sensor is installed through the opening.

Example 2:

referring to fig. 3 and 4, the axial flow type regulating valve of this embodiment includes a valve body 1.2.2, a medium passage is provided in the valve body, one end of the medium passage is a medium inlet 1.2.2.1, the other end is a medium outlet 1.2.2.2, and a controller mounting hole 1.2.2.4 communicated with the medium passage is further provided on the valve body 1.2.2;

the valve core 1.2.4 and the valve cage 1.2.5 in the above embodiment are axially (or in the medium flow direction) installed in the medium channel, and the outer diameter of the guide sleeve and the outer diameter of the valve cage are both smaller than the inner diameter of the medium channel, wherein the valve cage is installed at the medium outlet, so that the medium outlet is communicated with the medium channel through the valve cage, the other end of the valve cage is connected with the guide sleeve to form a working cavity, the special-shaped piston rod can axially reciprocate in the working cavity under the driving of the pressure difference of the working cavity at two sides of the piston in the housing, so that the valve cage is opened and closed, the opening and closing of the medium outlet are controlled, and the pressure difference change of the working cavity at two sides of the piston is derived from hydraulic oil. The motion information of the valve core is collected through the wireless positioning sensor and the positioning magnetic ring in the process.

In a further scheme, a support 1.2.2.3 for installing the valve core is arranged in the medium channel. In a specific scheme, as shown in fig. 3(b), the valve core mounting support is composed of three independent support rods and a valve core clamping seat at the central part. One end of the valve core is arranged on the valve core support 1.2.2.3 through a jacking screw 1.2.6.

In other schemes, a valve seat 1.2.3 is arranged at the medium outlet, one end of a valve cage 1.2.5 is connected with the valve seat 1.2.3, and the other end is connected with a valve core. A plurality of small holes/windows are uniformly distributed on the circumferential wall of the valve cage 1.2.5, and the end face of the valve cage is pressed and fixed through the valve seat 1.2.3. When the valve core reciprocates left and right, the relative flow area between the valve core and the valve cage 1.2.5 is changed, thereby achieving the purpose of adjusting the flow/pressure of the conveyed medium;

on the basis of the scheme, the opening direction of the controller mounting hole is perpendicular to the flow direction or the axial direction of the medium in the medium channel, the aperture of the controller mounting hole is large, the requirement of maintenance operation is met, further, the upper valve cover 1.2.1 can be mounted at the controller mounting hole, and the controller mounting hole can be specifically connected through bolts.

Example 3:

referring to fig. 4 and 5, the axial flow regulating valve system of this embodiment is composed of the above-described axial flow regulating valve 1.2 and the controller 1.1; and a hydraulic oil outlet on the controller is communicated with the first flow passage of the axial flow type regulating valve, so that hydraulic oil is provided for the two cavities in the valve core, and the valve is controlled to work.

The controller of the embodiment adopts an electric module disclosed in CN201810587443.3, and the electric module disclosed comprises a motor 1.1.10, an oil pump 1.1.7, a hydraulic control distributing valve 1.1.6, a liquid level indicator, an overflow valve 1.1.3, an oil filling valve 1.1.1 and a safety valve 1.1.4; wherein: the oil pump 1.1.7 and the hydraulic control distributing valve 1.1.6 are sequentially connected with an oil way cover plate, an oil way flange is connected to the valve body base body 1.1.8 through screws, a flow channel is arranged on the valve body base body 1.18, the motor 1.1.10 is installed on the valve body base body, and the motor is connected with the oil pump through a coupler 1.1.9; the liquid level indicator is fixed on the valve body base body 1.1.8 by a clamp spring; the liquid level indicator is arranged on a valve body of the electric module and is used for applying pressure to a low-pressure cavity of the electric module, so that the oil pump has certain pre-pump pressure and the cavitation phenomenon of the oil pump is prevented; the overflow valve 1.1.3, the filling valve 1.1.1 and the safety valve 1.1.4 are all inserted on the valve body base body.

The oil way flange of the electric module is fixedly connected with the mounting hole of the controller of the axial flow type regulating valve or is connected with the valve cover 1.2.1 by adopting a bolt; and a flow passage on the valve body base body 1.18 is communicated with a first flow passage of the axial flow type regulating valve to provide corresponding hydraulic oil for the valve core.

In practical use, the axial flow type regulating valve system is arranged at a required position of a process pipeline and is controlled by a remote or local control device according to requirements, and the valve body and the control device can be connected by a cable.

When the system works, the motor 1.1.10 drives the oil pump 1.1.7 to rotate, hydraulic oil is pressurized, the hydraulic control distributing valve 1.1.6 automatically distributes flow direction according to the pump steering, and the hydraulic oil is output through the valve body base body 1.1.8 flow channel; high-pressure oil output by the electric module flows into the upper valve cover through a flow passage in the oil way flange, the connection part of the oil port is sealed by an o-shaped ring, and the flow passage of the upper valve cover flows into the cavity of the valve core through the flow passage;

the valve core 1.2.4 is not only an adjusting mechanism of an axial flow type adjusting valve, but also an actuating mechanism of an electric module, along the motion direction of the piston, the guide sleeve 1.2.4.2 is butted with the valve cage 1.2.5 to form a working cavity, the shell 1.2.4.3 is fixed in the guide sleeve, the piston rod is movably sleeved in the shell in a sealing manner and is positioned in the working cavity, the free end of the piston rod is provided with the piston, and the piston divides the sealing cavity formed by the shell and the piston rod into two cavity types; the piston 1.2.4.4 divides the shell into two chambers which are respectively communicated with two oil ports of the electric module, high-pressure oil output by the electric module enters one chamber of the valve core along a flow passage and drives the piston rod to move in a volume mode, and the displacement of the piston rod determines the opening degree of the valve cage 1.2.5, namely the throughput of the valve cage, so that the opening degree adjusting function of the axial flow type adjusting valve is realized;

the displacement sensor is installed at the end part of the 1.2.4.2 guide sleeve by adopting threaded connection, the measuring rod extends into the cavity of the valve core, the magnetic ring is installed at the end part of the 1.2.4.1 piston rod, and when the piston displaces, the magnetic ring moves and the measuring rod relatively displaces so as to feed back displacement information;

when the displacement of the valve core reaches the signal displacement given by the control device, the motor stops rotating, the cavity of the valve core stops inputting high-pressure oil, and the valve core is locked at a corresponding position;

when the valve needs to adjust the opening degree, an analog quantity signal instruction is input to the control device in a remote or local mode, the position sensor feeds back the current valve opening degree, when the current valve opening degree has a deviation with the preset valve opening degree, the motor is started to rotate positively (or reversely) according to the deviation direction, high-pressure oil enters one of the chambers of the valve core to drive the valve core to move towards the preset valve position until the position sensor feeds back that the deviation of the current valve opening degree and the preset valve opening degree is within a set range, the motor stops rotating, and the valve is locked at the preset position;

in a further scheme, the hydraulic control distributing valve 1.1.6, the overflow valve 1.1.3, the oil filling valve 1.1.1 and the safety valve 1.1.4 are matched with the oil pump 1.1.7 to control the valve core to work, and the specific process is as follows:

two cavities divided by a piston in the valve core are respectively connected with an oil port of an oil pump through an overflow valve 1.1.3 and a hydraulic control distributing valve 1.1.6, one oil port is an oil inlet, namely a low-pressure end, and the other oil port is an oil outlet, namely a high-pressure end according to the steering direction of the oil pump, and the two cavities of the valve core enable the piston to move due to high-low pressure difference, so that the valve core is driven to move;

when the driving load is overlarge, the system pressure exceeds a safety value, the overflow valve 1.1.3 is automatically opened to release pressure, the hydraulic system is protected from safe operation, a medium enters an oil supply way (namely a low-pressure cavity in the valve body) through the load overflow valve, and when the pressure of a valve core cavity is smaller than the closing pressure of the load overflow valve, the overflow valve is closed;

when the oil pressure at the inlet of the oil pump is too high, the hydraulic oil pressure of a low-pressure cavity of an oil supply path of the electric module exceeds a set safe pressure value, the safety overflow valve automatically opens to release pressure, the hydraulic oil is discharged to the outside, the low-pressure cavity of the hydraulic system is protected to safely operate, and when the hydraulic oil pressure of the low-pressure cavity is smaller than the closing pressure of the safety valve 1.1.4, the safety valve 1.1.4 is closed;

the oil filling valve 1.1.1 is arranged on the valve body and has the function of supplementing hydraulic oil for the system when the hydraulic oil of the hydraulic oil supply path of the electric module is insufficient;

the hydraulic control distributing valve 1.1.6 is a core component of the electric module, and is used for adjusting the flow of a liquid medium according to the actual working conditions of a pump and a load, realizing the control of a hydraulic cylinder and controlling the functions of bidirectional load output and self-locking of any position.