CN117605858A

CN117605858A - Back pressure regulating valve, regulating system and regulating method

Info

Publication number: CN117605858A
Application number: CN202311655441.0A
Authority: CN
Inventors: 白国军; 方文超; 金江善; 徐建新; 禹林业; 刘少辉
Original assignee: 711th Research Institute of CSIC
Current assignee: 711th Research Institute of CSIC
Priority date: 2023-12-04
Filing date: 2023-12-04
Publication date: 2024-02-27

Abstract

The invention provides a back pressure regulating valve, a regulating system and a regulating method. The back pressure regulating valve comprises a valve body, a valve body and a valve body, wherein the valve body comprises an inlet, an outlet and a plurality of middle holes communicated with the inlet and the outlet; the adjusting assemblies are arranged in a plurality of middle holes of the valve body independently, and each adjusting assembly corresponds to each middle hole; wherein each adjusting assembly comprises an electromagnetic actuator, a valve core, a valve sleeve and a spring member; one end of the valve core is connected with the executing part of the electromagnetic actuator, the other end of the valve core is connected with the spring member, the valve sleeve is sleeved on the periphery of the valve core, a flow chamber is defined between the valve core and the valve sleeve, one side of the flow chamber is communicated with the inlet, and the other side of the flow chamber is openably communicated with the outlet.

Description

Back pressure regulating valve, regulating system and regulating method

Technical Field

The invention relates to a back pressure regulating valve, a regulating system and a regulating method.

Background

The back pressure regulating valve is mainly used for controlling the flow of various fluids such as air, water, steam and oil, is used for controlling the unstable state in a pipeline in front of the valve or constant volume pressure equipment, and is used for regulating the pressure of the unstable state in the constant volume pressure equipment, the demand of the back pressure regulating valve which is refined automatically is increased sharply along with the continuous increase of the demand of the current automatic equipment, the back pressure regulating valve is used for frequently regulating the pressure in front of the valve in the fluid control process, so that the stability of the back pressure in front of the valve is kept, and the performance and the reliability of the back pressure regulating valve are vital to the fluid control process.

In the prior art, the back pressure regulating valve adopts a motor to drive a speed reducer to control the rotation angle of a butterfly valve or a valve to regulate the pressure in front of the valve, and some back pressure regulating valves control the flow area by manually controlling the compression amount of a spring diaphragm in a valve rod to realize the regulation of fixed back pressure. The butterfly valve type back pressure regulating valve has the defects that the butterfly valve type back pressure regulating valve is large in size, complex in structure, slow in response in regulation, incapable of guaranteeing tightness under the condition of facing high back pressure, capable of guaranteeing fine self-adaptive high-precision regulation under the working conditions of small flow and large flow, free of a standby back pressure valve in a limited installation and use space, and capable of being replaced by only maintaining or replacing a new valve under the condition of faults.

Disclosure of Invention

The invention aims to provide a back pressure regulating valve.

It is a further object of the present invention to provide a backpressure regulating system.

It is another object of the present invention to provide a back pressure adjustment method.

A backpressure regulating valve according to an aspect of the present application, comprising a valve body including an inlet, an outlet, and a plurality of mesopores communicating with the inlet and the outlet; the adjusting assemblies are arranged in a plurality of middle holes of the valve body independently, and each adjusting assembly corresponds to each middle hole; wherein each adjusting assembly comprises an electromagnetic actuator, a valve core, a valve sleeve and a spring member; one end of the valve core is connected with the executing part of the electromagnetic actuator, the other end of the valve core is connected with the spring member, the valve sleeve is sleeved on the periphery of the valve core, a flow chamber is defined between the valve core and the valve sleeve, one side of the flow chamber is communicated with the inlet, and the other side of the flow chamber is openably communicated with the outlet.

In one or more embodiments of the back pressure regulator valve, the valve core has a tapered sidewall that forms the flow chamber with the valve housing, and a bottom of the valve core and the valve housing are relatively movable to provide a passage for fluid from the flow chamber to the outlet.

In one or more embodiments of the back pressure regulating valve, a mounting chamber is provided inside the valve spool, the mounting chamber accommodates the spring member, one end of the spring member is connected to the mounting chamber, and the other end is connected to the outlet.

In one or more embodiments of the back pressure regulating valve, when the back pressure regulating valve is opened, the electromagnetic actuator drives the valve core through an actuating part, overcomes the elastic force of the spring member, so that the bottom of the valve core and the valve sleeve relatively move to have a gap, the flow chamber is communicated with the outlet through the gap, and a flow path of fluid passing through the back pressure regulating valve is configured to: from the inlet, then flows to the flow chamber, then flows to the outlet.

In one or more embodiments of the back pressure regulating valve, a sidewall of the valve housing is provided with a through hole that communicates the inlet with the flow chamber.

In one or more embodiments of the backpressure regulating valve, a sealing ring seal is provided between the valve sleeve and the valve spool.

In one or more embodiments of the backpressure regulating valve, a sealing ring seal is arranged between the valve sleeve and the electromagnetic actuator, and a sealing ring seal is arranged between the valve sleeve and the middle hole.

A backpressure-regulating system according to the second aspect of the present application, comprising: the backpressure-regulating valve of the first aspect, and a controller comprising: a memory for storing instructions executable by the processor; a processor for executing the instructions to implement the steps of: and opening part or all of the regulating components to carry out back pressure regulation according to the regulated flow.

According to a back pressure regulating method of a third aspect of the present application, the back pressure regulating valve according to the first aspect is used, and according to the regulated flow, part or all of the regulating components are opened to perform back pressure regulation.

In one or more embodiments of the back pressure regulating method, the valve core of the back pressure regulating valve has a tapered sidewall that forms the flow chamber with the valve housing, the bottom of the valve core and the valve housing being relatively movable to provide a passage for fluid from the flow chamber to the outlet; and adjusting the included angle between the conical side wall and the valve sleeve to correspond to different fluid flow adjustment requirements.

The advantages of using the backpressure-regulating valve, regulating system, and regulating method described above include, but are not limited to, one or a combination of the following:

1. the regulating components of each group in the back pressure regulating valve, namely the electromagnetic actuator, the valve core, the valve sleeve, the spring and the like are mutually independent and redundant, the displacement of the actuating part of the electromagnetic actuator and the pressure at the inlet form a closed-loop control system, the pressure in front of the valve can be accurately regulated to fluctuate in a smaller range, the system has a simple and compact structure, is easy to install, and can be connected with a plurality of groups of actuators in parallel according to requirements;

2. the backpressure regulating valve directly pushes the valve core to move downwards through the electromagnetic actuator so as to realize the purpose of regulating the gas flow area, the lower part Cheng Zhuixing of the valve core forms an included angle alpha with the valve sleeve, the included angles alpha are respectively designed according to the gas flow, so that the backpressure regulating valve is suitable for different fluid medium flow requirements, and meanwhile, the design of the included angles alpha can realize the fine continuous regulation of the fluid flow;

3. the valve core structure of the back pressure regulating valve is a balanced structure, a sealing ring is arranged between the valve core and the valve sleeve, and the tightness of the back pressure regulating valve is further improved under the action of the pretightening force of an internal spring, so that the good sealing for high-pressure flowing media is realized.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the accompanying drawings and embodiments in which like reference numerals refer to like features throughout, it being noted that these drawings are given by way of example only, which are not drawn to scale and should not be construed to limit the true scope of the invention, wherein:

fig. 1 is a schematic structural diagram of a back pressure regulating valve according to an embodiment.

Fig. 2 is a schematic structural view of an adjusting assembly of a back pressure adjusting valve according to an embodiment.

Detailed Description

Reference will now be made in detail to the various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with the exemplary embodiments, it will be appreciated that the present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

In the following description, references to orientations or positional relationships of "inner", "outer", "upper", "lower", "top", "bottom", or other orientation terminology are based on the orientation or positional relationships shown in the drawings, and are merely for convenience in describing the invention and to simplify the description, rather than to indicate or imply that the device or component referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Meanwhile, the present application uses specific words to describe embodiments of the present application. As "some embodiments" means a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application. Thus, it should be emphasized and should be appreciated that two or more references to "some embodiments" in this specification at different positions are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of some embodiments of the present application may be combined as suitable.

The inventor finds that the butterfly valve type back pressure regulating valve in the prior art has the defects that the volume is large, the structure is complex, the response is slow in regulation, the tightness of the butterfly valve type back pressure regulating valve cannot be ensured under the condition of facing high back pressure, the fine self-adaptive high-precision regulation under the working conditions of small flow and large flow cannot be ensured, meanwhile, a spare back pressure valve is not arranged in a limited installation and use space, and the butterfly valve type back pressure regulating valve can only be maintained or replaced by a new valve under the condition of fault.

Based on the above considerations, the inventors have made intensive studies to design a back pressure regulating valve, a regulating system, and a regulating method to overcome one or more of the above-mentioned technical problems.

Although the backpressure regulating valve, the regulating system and the regulating method disclosed in the embodiments of the present application may be applicable to marine engines, but not limited to this, and may be applicable to other applications, such as heavy vehicles and railway trains, as long as the backpressure regulating valve is adopted to overcome the above-mentioned problems of the prior art.

Referring to fig. 1 and 2, the back pressure regulating valve includes a valve body 1 and a plurality of regulating members. It will be appreciated that the number of the plurality of adjustment assemblies is not limited to the three shown in the figures, but may be different numbers.

As shown in fig. 2, the valve body 1 includes an inlet a, an outlet B, and a plurality of intermediate holes 11 communicating the inlet a, the outlet B. For example, as shown in fig. 2, the fluid inlet a communicates at a position vertically intermediate the central hole 11, and a small flow hole is provided below the central hole, and communicates with the fluid outlet B.

A plurality of adjusting components are independently disposed in a plurality of middle holes 11 of the valve body 1, each adjusting component corresponds to each middle hole 11, and one adjusting component corresponds to one middle hole 11 in fig. 2 for illustration.

As shown in fig. 2, each adjustment assembly includes an electromagnetic actuator 2, a valve spool 7, a valve sleeve 6, and a spring member 9. One end of the valve element 7 is connected to an actuator portion of the electromagnetic actuator 2, which in the embodiment is exemplified by the electromagnetic actuator jack 4, but is not limited thereto. The other end of the valve core 7 is connected with a spring member 9, the valve sleeve 6 is sleeved on the periphery of the valve core 7, a flow chamber 12 is defined between the valve core 7 and the valve sleeve 6, one side of the flow chamber 12 is communicated with the inlet A, and the other side of the flow chamber is openably communicated with the outlet B. The specific structure of the electromagnetic actuator 2 can be a high-precision proportional electromagnetic actuator, and is provided with a driving line and an actuator position signal sensor line, as shown in fig. 1, the electromagnetic actuator 2 comprises 3 or more electromagnetic actuators 2 which are connected side by side, the electromagnetic actuators 2 are respectively fixedly arranged above the middle hole 11 of the valve body 1 by bolts 3, the electromagnetic actuators 2 are vertically downwards and extend out of the ejector rod 4, and the up-and-down movement of the ejector rod 4 is precisely controlled by an external driving controller. The valve sleeve 5 can be arranged in a middle hole 11 above the valve body 1, the valve sleeve 6 can be in a hollow column shape, four through holes 13 are uniformly distributed along the axis at the lower middle part of the valve sleeve 6, the four through holes and the valve body fluid inlet A are opposite to form a communication mode, namely, the side wall of the valve sleeve 6 is provided with the through holes 13, and the through holes 13 can be communicated with the inlet A and the flow chamber 12. The upper part of the valve sleeve 6 is contacted with the electromagnetic actuator 2, the O-shaped sealing ring 5 is clamped in the middle, and sealing rings are respectively distributed at the upper and lower parts of the valve sleeve 6 contacted with the valve body 1 to seal gas or liquid.

The valve core 7 and the valve sleeve 6 form a matched matching piece, the upper end of the valve core 7 is contacted with the ejector rod 4 of the electromagnetic actuator 2 and can move up and down under the pushing of the ejector rod 4, and the upper part of the valve core 7 is provided with uniformly distributed flow small holes which are communicated with the inner cavity of the electromagnetic actuator 2 above, so that the up and down pressure is balanced.

With continued reference to fig. 2, the valve cartridge 7 has a tapered sidewall 14, the tapered sidewall 14 and the valve housing 6 forming a flow chamber 12 with the bottom of the cartridge and the valve housing being relatively movable to provide a passage for fluid from the flow chamber 12 to the outlet B. Specifically, the lower portion Cheng Zhuixing of the valve core 7 forms an included angle α with the valve sleeve 6, and the size of the included angle α is designed according to the flow rate requirement of the fluid.

The lower part of the valve core 7 can be provided with a sealing gasket 8, the lower part of the sealing gasket 8 is fixed on the step surface below the valve core 7, the upper part of the sealing gasket 8 is clung to the valve sleeve to seal the high-pressure fluid above, the bottom of the valve core 7 is provided with an inner hole installation positioning gasket 10, a spring piece 9 is placed below the positioning gasket, the spring piece 9 is placed in the hole at the bottom of the valve core 7, the spring piece 9 is in a compression state, the lower end surface of the spring piece 9 is in contact with the valve body 1 of the positioning gasket, and the spring is always in a compression state in the moving process of the valve core 1. I.e. the valve core 7 is internally provided with a mounting chamber 15, the mounting chamber 15 accommodates a spring member 9, one end of the spring member 9 is connected to the mounting chamber 15 (the connecting and positioning gasket 10 is shown in the figure), and the other end is connected to the middle hole 11 of the valve body.

The back pressure regulating valve opening working process may be that, when the back pressure regulating valve is opened, the electromagnetic actuator 2 drives the valve core 7 through the actuating part, overcomes the elastic force of the spring member 9, so that a gap exists between the bottom of the valve core 7 and the valve sleeve 6, and the flow chamber 12 communicates with the outlet B through the gap, and the flow path of the fluid passing through the back pressure regulating valve is configured as follows: enters from inlet a and then flows to flow chamber 12 and then flows to outlet B for output. Specifically, after the inlet A and the outlet B of the exhaust back pressure valve are respectively connected with a pipeline, a driving line and a position feedback line of the electromagnetic actuator 2 are connected to an upper controller, the whole pipeline of the inlet A is filled with high-pressure fluid medium at the inlet A and the front end of the electromagnetic actuator, after the upper controller receives a valve front pressure signal, the electromagnetic actuator 2 starts to drive, control and regulate the electromagnetic actuator 2, the electromagnetic actuator 2 rapidly drives the extension length of the ejector rod 4, the ejector rod 4 pushes the valve core 7 to move downwards against the acting force of the spring 9, after the valve core 7 moves downwards, the sealing gasket 8 moves downwards, an annular gap is formed between the conical side wall 14 below the valve core 7 and the edge of the valve sleeve, fluid medium flows through the annular gap, finally flows through a flow hole below the valve body and is converged to the outlet B to be discharged, and therefore, the continuous regulation of the valve front back pressure of the valve A and the front end is finished, and the pressure of the valve inlet A and the front end is always stable within a small range under a set pressure value. When the flow of the fluid medium is smaller, the back pressure fine adjustment can be realized only by independently adjusting part (1 or a plurality of) electromagnetic actuators 2, and when the adjustment under the condition of large flow is needed, the fine adjustment of the back pressure can be realized by independently combining all the electromagnetic actuators, and the back pressure adjusting valve has the advantages of simple structure principle, quick response, wide flow adjusting range and good sealing performance.

It can be appreciated that the present application also provides a back pressure adjusting method, which uses the back pressure adjusting valve described in the above embodiment to open some or all of the adjusting assemblies of the plurality of adjusting assemblies to perform back pressure adjustment according to the adjusted flow.

In the design stage, according to the structure of the valve core 7 of the back pressure regulating valve with the conical side wall 14, the included angle between the conical side wall 14 and the valve sleeve 6 can be adjusted to correspond to different fluid flow regulating requirements.

With continued reference to fig. 1 and 2, the present application also provides a back pressure regulating system employing a back pressure regulating valve as described in the above embodiments, and a controller 100, the controller 100 comprising: a memory 101 for storing instructions executable by the processor; a processor 102 for executing the instructions to implement the steps of: and opening part or all of the regulating components to carry out back pressure regulation according to the regulated flow.

It should be noted that the above-described memory 101 and processor 102 are not limited to a specific memory or processor. In some cases, both the memory 101 and the processor 102 may have a distributed architecture, for example, may include a memory and a processor respectively located at an engine end and a background cloud end, where the engine end and the background cloud end together implement the redundant continuous adjustment of the backpressure described above. Furthermore, in the embodiment adopting the distributed structure, each step may adjust a specific execution terminal according to the actual situation, and the specific scheme of implementing each step at a specific terminal should not limit the protection scope of the present invention.

In summary, the benefits of the backpressure-regulating valves, regulation systems, and regulation methods described above include, but are not limited to, one or a combination of the following:

While the invention has been described in terms of preferred embodiments, it is not intended to be limiting, but rather to the invention, and that variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention fall within the protection scope defined by the claims of the present invention.

Claims

1. A back pressure regulating valve, comprising:

the valve body comprises an inlet, an outlet and a plurality of middle holes communicated with the inlet and the outlet;

the adjusting assemblies are arranged in a plurality of middle holes of the valve body independently, and each adjusting assembly corresponds to each middle hole;

wherein each adjusting assembly comprises an electromagnetic actuator, a valve core, a valve sleeve and a spring member; one end of the valve core is connected with the executing part of the electromagnetic actuator, the other end of the valve core is connected with the spring member, the valve sleeve is sleeved on the periphery of the valve core, a flow chamber is defined between the valve core and the valve sleeve, one side of the flow chamber is communicated with the inlet, and the other side of the flow chamber is openably communicated with the outlet.

2. The back pressure regulator valve of claim 1, wherein the valve spool has a tapered sidewall that forms the flow chamber with the valve sleeve, the bottom of the valve spool and the valve sleeve being relatively movable to provide a passage for fluid from the flow chamber to the outlet.

3. The back pressure regulating valve according to claim 2, wherein a mounting chamber is provided inside the valve spool, the mounting chamber accommodating the spring member, one end of the spring member being connected to the mounting chamber, the other end being connected to a middle hole of the valve body.

4. The back pressure regulating valve according to claim 2, wherein when the back pressure regulating valve is opened, the electromagnetic actuator drives the valve spool by the actuator against the elastic force of the spring member such that a gap exists in which the bottom of the valve spool and the valve sleeve move relatively such that the flow chamber communicates with the outlet, and a flow path of fluid through the back pressure regulating valve is configured to: from the inlet, then flows to the flow chamber, then flows to the outlet.

5. The backpressure-regulating valve of claim 2, wherein a sidewall of said valve housing is provided with a through-hole, said through-hole communicating said inlet with said flow chamber.

6. The back pressure regulator valve of claim 2, wherein a sealing ring is disposed between the valve sleeve and the valve spool.

7. The backpressure-regulating valve of claim 1, wherein a sealing ring seal is provided between said valve housing and said electromagnetic actuator; the upper part of the valve core is provided with uniformly distributed flow small holes which are communicated with the inner cavity of the upper electromagnetic actuator; and a sealing ring is arranged between the valve sleeve and the middle hole for sealing.

8. A back pressure regulating method, characterized in that the back pressure regulating valve according to claims 1-7 is adopted, and part or all of the regulating components are started to carry out back pressure regulation according to the flow rate required to be regulated.

9. The back pressure regulating method of claim 8, wherein the valve spool of the back pressure regulating valve has a tapered sidewall that forms the flow chamber with the valve sleeve, the bottom of the valve spool and the valve sleeve being relatively movable to provide a passage for fluid from the flow chamber to the outlet; and adjusting the included angle between the conical side wall and the valve sleeve to correspond to different fluid flow adjustment requirements.

10. A back pressure regulating system employing the back pressure regulating valve of claims 1-7, and a controller comprising:

a memory for storing instructions executable by the processor;

a processor for executing the instructions to implement the steps of:

and opening part or all of the regulating components to carry out back pressure regulation according to the regulated flow.