CN220134687U - Flow regulating valve and control system - Google Patents

Abstract

The utility model relates to the technical field of power generation auxiliary equipment of a thermal power plant, in particular to a flow regulating valve and a control system, wherein the flow regulating valve comprises a flow control assembly, a flow control part and a pressure stabilizing part, the valve body is matched with the flow control part and is matched with the pressure stabilizing part, the valve body comprises a valve shell, a pressure regulating head, a connecting disc, a supporting table and a motor, the pressure regulating head is in threaded fit with the valve shell, the connecting disc is arranged on the side surface of the valve shell, the supporting table is arranged on the upper side surface of the valve shell, and the motor is arranged on the upper side surface of the supporting table; the pressure relief assembly comprises a connecting shell and a pressure relief piece, wherein the connecting shell is matched with the pressure relief piece, and the connecting shell is connected with the lower side of the valve body; when fluid flows through the valve body, the flow of the fluid is controlled, so that the fluid supplied to the turbine is stable and continuous, sudden pressure is released through the pressure release assembly, the pipeline explosion is prevented, the manual operation is not needed by the control system, and the scalding danger is prevented by manual adjustment.

Description

Flow regulating valve and control system

Technical Field

The utility model relates to the technical field of power generation auxiliary equipment of a thermal power plant, in particular to a flow regulating valve and a control system.

Background

The supercritical unit is high-efficiency power generation equipment and is an important breakthrough of the current coal-electricity technology. The traditional coal-fired power generation equipment takes a water boiler as a core, a supercritical unit drives a turbine by taking supercritical fluid as a working medium, high-efficiency power generation is realized by adopting technologies such as a headspace boiler and the like, the critical point in the supercritical fluid is the transition point of water from liquid state to gas state at a specific temperature and pressure, the supercritical fluid is in a state exceeding the transition point, the working condition of the supercritical fluid has the characteristics of high temperature and high pressure, a steam pipeline bears the important task of conveying the supercritical fluid from the boiler to the turbine, and the steam pipeline of the traditional supercritical unit has the following problems:

1. when supercritical fluid in the steam pipeline is supplied to the turbine, a steady flow is required, and sudden pressure increases in the pipeline, which may occur, require that excess steam be released into a safe area.

2. The supercritical fluid operates under high temperature and high pressure conditions, and manual adjustment is easy to cause scalding risks, and a remote automatic control system is needed.

Disclosure of Invention

Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The present utility model has been made in view of the above-mentioned prior art problems.

The utility model aims to provide a flow regulating valve, which aims to solve the problems that when supercritical fluid in a steam pipeline is supplied to a turbine, the flow is required to be stabilized, the pressure of the pipeline, which possibly generates sudden increase, is required to release excessive steam to a safety area.

In order to solve the technical problems, the utility model provides the following technical scheme: the flow control assembly comprises a valve body, a flow control part and a pressure stabilizing part, wherein the valve body is matched with the flow control part and is matched with the pressure stabilizing part, the valve body comprises a valve shell, a pressure regulating head, a connecting disc, a supporting table and a motor, the pressure regulating head is in threaded fit with the valve shell, the connecting disc is arranged on the side surface of the valve shell, the supporting table is arranged on the upper side surface of the valve shell, and the motor is arranged on the upper side surface of the supporting table; the pressure relief assembly comprises a connecting shell and a pressure relief piece, wherein the connecting shell is matched with the pressure relief piece, and the connecting shell is connected with the lower side of the valve body.

As a preferred embodiment of the flow rate regulating valve of the present utility model, wherein: the supporting table comprises a voltage stabilizing bin, and the voltage stabilizing bin is arranged on the side face of the supporting table.

As a preferred embodiment of the flow rate regulating valve of the present utility model, wherein: the valve casing includes air inlet cavity, air outlet cavity, accuse flow cavity, regulation and control screw thread and lets out the mouth that explodes, the air inlet cavity set up in the side of valve casing, the air outlet cavity set up in another side of valve casing, accuse flow cavity and regulation and control screw thread set up in the upside of valve casing, let out the mouth that explodes set up in the downside of valve casing.

As a preferred embodiment of the flow rate regulating valve of the present utility model, wherein: the pressure regulating head comprises a rotating head, a rotating thread, a matching column and a regulating and controlling disc, wherein the rotating thread is arranged on the inner side surface of the rotating head, the rotating head is arranged on the side surface of the matching column, and the regulating and controlling disc is arranged on the other side surface of the matching column.

As a preferred embodiment of the flow rate regulating valve of the present utility model, wherein: the flow control piece comprises a flow limiting head, a sealing column and a first spring, wherein the sealing column is arranged on the upper end face of the flow limiting head, and the first spring is arranged on the upper side face of the sealing column; the sealing column comprises a sealing wall, and the sealing wall is arranged on the upper side face of the sealing column.

As a preferred embodiment of the flow rate regulating valve of the present utility model, wherein: the voltage stabilizing piece comprises a driving rod, a second spring and a voltage stabilizing rod, wherein the driving rod is arranged at one end of the second spring, and the voltage stabilizing rod is arranged at the other end of the second spring; the driving rod comprises a threaded column and a pushing disc, and the pushing disc is arranged on the lower side face of the threaded column; the connection shell comprises a connection column, an exhaust disc and an exhaust cavity, wherein the connection column is arranged on the upper side face of the connection shell, the exhaust disc is arranged on the lower side face of the connection shell, and one end of the connection shell is provided with the exhaust cavity in a penetrating mode.

As a preferred embodiment of the flow rate regulating valve of the present utility model, wherein: the exhaust cavity comprises a matching port, a spring cavity and an air outlet, wherein the matching port is arranged on the upper end face of the spring cavity, and the air outlet is arranged on the lower end face of the spring cavity.

As a preferred embodiment of the flow rate regulating valve of the present utility model, wherein: the pressure relief piece comprises a matching ball, a third spring, a pressure relief column and a matching disc, wherein the third spring and the pressure relief column are arranged on the lower end face of the matching ball, and the matching disc is arranged on the lower end face of the pressure relief column.

The flow regulating valve has the beneficial effects that: through setting up accuse flow spare and steady casting die, when supercritical fluid flows through the valve body, the flow of control fluid reaches the stable continuation of fluid that supplies the turbine to release out sudden pressure through the pressure release subassembly, prevent that the pipeline explosion from taking place the safety problem.

Another object of the present utility model is to provide a control system, which aims to solve the problem that the supercritical fluid operates under high temperature and high pressure conditions, and the manual adjustment is easy to cause scalding risk, and a remote automatic control system is required.

In order to solve the technical problems, the utility model also provides the following technical scheme: a control system comprising a control assembly; and the control assembly comprises a controller, a pressure sensor and a motor driver, wherein the controller is arranged on the side surface of the supporting table, the pressure sensor is arranged on the side surface of the valve casing, the motor driver is arranged on the side surface of the motor, and the pressure sensor and the motor driver are connected with the controller.

The control system of the utility model has the beneficial effects that: through pressure sensor response pressure, through controller control motor driver, with the pressure in the balanced flow control valve of motor driver control, need not manual operation, prevent that manual regulation from taking place safety problems such as scald.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic view of a flow control valve and control system of the present utility model integrally connected to a pipeline.

FIG. 2 is a schematic diagram of the overall structure of a flow control valve and control system according to the present utility model.

FIG. 3 is a schematic cross-sectional view of FIG. 2 of a flow control valve and control system according to the present utility model.

FIG. 4 is a schematic diagram of a flow control member and a pressure stabilizing member in a flow control valve and a control system according to the present utility model.

Fig. 5 is a schematic cross-sectional view of a valve housing in a flow control valve and control system according to the present utility model.

FIG. 6 is a schematic cross-sectional view of a connecting housing of a flow control valve and control system according to the present utility model.

In the figure: a flow control assembly 100; a valve body 101; a valve housing 101a; an air intake chamber 101a-1; an air outlet chamber 101a-2; a flow control chamber 101a-3; regulatory threads 101a-4; explosion venting port 101a-5; a regulating head 101b; a spin head 101b-1; rotating the thread 101b-2; mating post 101b-3; a regulation plate 101b-4; a land 101c; a support table 101d; a surge tank 101d-1; a motor 101e; a flow control member 102; a flow restrictor 102a; a seal post 102b; sealing wall 102b-1; a first spring 102c; a voltage stabilizer 103; a driving lever 103a; threaded post 103a-1; pushing the disc 103a-2; a second spring 103b; a voltage stabilizing lever 103c; a pressure relief assembly 200; a connection case 201; a connection column 201a; a vent disc 201b; an exhaust chamber 201c; a fitting port 201c-1; spring cavity 201c-2; an air outlet 201c-3; a pressure relief piece 202; a fitting ball 202a, a third spring 202b; a pressure relief column 202c; a mating tray 202d; a control assembly 300; a controller 301; a pressure sensor 302; a motor driver 303.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Embodiment 1, refer to fig. 1-5, provide a flow control valve according to a first embodiment of the present utility model, which includes a flow control assembly 100 including a valve body 101, a flow control member 102 and a pressure stabilizing member 103, where the valve body 101 is matched with the flow control member 102, the valve body 101 is matched with the pressure stabilizing member 103, the valve body 101 includes a valve housing 101a, a pressure adjusting head 101b, a connecting disc 101c, a supporting table 101d and a motor 101e, the pressure adjusting head 101b is in threaded engagement with the valve housing 101a, the connecting disc 101c is disposed on a side surface of the valve housing 101a, the supporting table 101d is disposed on an upper side surface of the valve housing 101a, and the motor 101e is disposed on an upper side surface of the supporting table 101d; the valve body 101 is a metal high temperature and high pressure resistant shell, the flow control member 102 is used for controlling the flow and pressure of the supercritical fluid during circulation, the pressure stabilizing member 103 is used for stabilizing the pressure of the supercritical fluid during circulation, the valve housing 101a is a metal pouring integrated structure, the pressure regulating head 101b is used for regulating the preset pressure of the flow control member 102, the connecting disc 101c is used for connecting the valve body 101 to a steam pipeline so as to facilitate the flow regulating valve to regulate the supercritical fluid supplied to a turbine, and the supporting table 101d is used for supporting and installing the motor 101e and other components.

The supporting table 101d comprises a voltage stabilizing bin 101d-1, and the voltage stabilizing bin 101d-1 is arranged on the side surface of the supporting table 101d; the pressure stabilizing bin 101d-1 is a barrel with a round hole penetrating through, and is used for being matched with the pressure stabilizing piece 103, and the pressure stabilizing piece 103 can slide in the pressure stabilizing bin 101d-1 to adjust the flow control piece 102.

The valve casing 101a comprises an air inlet cavity 101a-1, an air outlet cavity 101a-2, a flow control cavity 101a-3, a regulating screw thread 101a-4 and an explosion venting port 101a-5, wherein the air inlet cavity 101a-1 is arranged on the side surface of the valve casing 101a, the air outlet cavity 101a-2 is arranged on the other side surface of the valve casing 101a, the flow control cavity 101a-3 and the regulating screw thread 101a-4 are arranged on the upper side surface of the valve casing 101a, and the explosion venting port 101a-5 is arranged on the lower side surface of the valve casing 101a; the air inlet cavity 101a-1 is used for receiving supercritical fluid in a pipeline on a connecting steam pipeline, the air outlet cavity 101a-2 is used for supplying fluid with stable pressure to a turbine, the flow control cavity 101a-3 is used for installing a flow control member 102 to control the pressure and flow rate of the fluid, the control threads 101a-4 are used for being matched with the pressure regulating head 101b, the preset pressure of the flow control member 102 is regulated when the pressure regulating head 101b and the control threads 101a-4 are matched for rotation, and the explosion venting port 101a-5 is used for releasing surplus steam to a safe area when sudden pressure increase is required.

The regulating head 101b comprises a rotating head 101b-1, a rotating thread 101b-2, a matching column 101b-3 and a regulating disc 101b-4, wherein the rotating thread 101b-2 is arranged on the inner side surface of the rotating head 101b-1, the rotating head 101b-1 is arranged on the side surface of the matching column 101b-3, and the regulating disc 101b-4 is arranged on the other side surface of the matching column 101b-3; the rotary head 101b-1 is used for rotating the pressure of the preset flow control member 102, the rotary screw thread 101b-2 is used for matching with the adjusting screw thread 101a-4 to adjust the position of the adjusting head 101b, the matching column 101b-3 is used for matching with the valve casing 101a and also used for the pressure stabilizing member 103 to pass through, and the adjusting disc 101b-4 is used for pressing the flow control member 102 to adjust the preset pressure.

The flow control member 102 comprises a flow limiting head 102a, a sealing column 102b and a first spring 102c, wherein the sealing column 102b is arranged on the upper end surface of the flow limiting head 102a, and the first spring 102c is arranged on the upper side surface of the sealing column 102b; the sealing post 102b includes a sealing wall 102b-1, the sealing wall 102b-1 being disposed on an upper side of the sealing post 102b; the flow-limiting head 102a is used for being matched with a trapezoid groove at the lower end of the flow-controlling cavity 101a-3 to control the circulation pressure of fluid, the sealing column 102b is matched with a cylindrical section at the upper end of the flow-controlling cavity 101a-3 to ensure the tightness of the valve body 101, and the first spring 102c is used for providing the elastic force of the precompression of the flow-controlling piece 102.

The voltage stabilizing device 103 comprises a driving rod 103a, a second spring 103b and a voltage stabilizing rod 103c, wherein the driving rod 103a is arranged at one end of the second spring 103b, and the voltage stabilizing rod 103c is arranged at the other end of the second spring 103b; the driving rod 103a comprises a threaded column 103a-1 and a pushing disc 103a-2, and the pushing disc 103a-2 is arranged on the lower side surface of the threaded column 103a-1; the driving rod 103a is used for driving the pressure stabilizing piece 103 to stabilize the pressure of the flow control piece 102, the second spring 103b is used for providing elastic force for balancing the pressure of the flow control piece 102 to stabilize the fluid flow, and the pressure stabilizing rod 103c is used for stabilizing the fluid flow when pressing the flow control piece 102.

When the pressure regulating head 101b is adjusted to a preset position, the initial elasticity of the first spring 102c is preset, the connection disc 101c is used for connecting the flow control assembly 100 into a steam pipeline, supercritical fluid enters the valve casing 101a from the air inlet cavity 101a-1, high-pressure fluid lifts the flow control member 102 from the flow control cavity 101a-3, the flow limiting head 102a is lifted, the pressure stabilizing rod 103c is lifted, the first spring 102c and the second spring 103b are compressed, fluid is supplied to a turbine through the steam pipeline connected with the air outlet cavity 101a-2 through the flow control cavity 101a-3, the driving rod 103a is controlled to move upwards by the motor 101e when the pressure of the fluid is reduced, the pressure of the second spring 103b is reduced, the lifting distance of the flow limiting head 102a is increased, the flow rate is increased, when the pressure of the fluid is lifted, the flow rate of the fluid is lifted, the motor 101e controls the driving rod 103a to move downwards, the pressure of the second spring 103b is increased, the flow limiting head 102a is lifted, the flow rate of the fluid is reduced, and the flow rate of the fluid is stably reduced.

Embodiment 2, referring to fig. 3 and 6, which is a second embodiment of the present utility model, unlike the previous embodiment, the pressure relief assembly 200 further includes a connection housing 201 and a pressure relief piece 202, the connection housing 201 is engaged with the pressure relief piece 202, and the connection housing 201 is connected to the lower side of the valve body 101; the connection shell 201 and the valve body 101 are matched through the explosion venting port 101a-5 and then welded and fixed, the tightness and the high-temperature high-pressure resistance strength of the valve body 101 are ensured during welding, and the pressure relief piece 202 releases excessive steam to a safety area when sudden pressure increase occurs in a pipeline.

The connection shell 201 comprises a connection column 201a, an exhaust disc 201b and an exhaust cavity 201c, wherein the connection column 201a is arranged on the upper side surface of the connection shell 201, the exhaust disc 201b is arranged on the lower side surface of the connection shell 201, and one end of the connection shell 201 is provided with the exhaust cavity 201c in a penetrating manner; the connecting column 201a is used for being matched with the explosion venting port 101a-5 to facilitate the welding of the connecting shell 201 and the valve body 101, the exhaust disc 201b is used for being connected with an exhaust pipeline to release excessive steam to a safety area, and the exhaust cavity 201c is a cavity of the pressure relief assembly 200 for exhausting.

The exhaust cavity 201c comprises a matching port 201c-1, a spring cavity 201c-2 and an air outlet 201c-3, wherein the matching port 201c-1 is arranged on the upper end surface of the spring cavity 201c-2, and the air outlet 201c-3 is arranged on the lower end surface of the spring cavity 201c-2; the pressure relief assembly 200 is closed against venting when the mating port 201c-1 and pressure relief member 202 are mated, and the pressure relief assembly 200 is opened to begin pressure relief when the pressure relief member 202 is pushed up, the air outlet 201c-3 is the fluid outlet, and the spring chamber 201c-2 is the fluid passage and is used to mount the pressure relief member 202.

The pressure release member 202 includes a fitting ball 202a, a third spring 202b, a pressure release column 202c, and a fitting disk 202d, the third spring 202b and the pressure release column 202c are disposed on a lower end surface of the fitting ball 202a, and the fitting disk 202d is disposed on a lower end surface of the pressure release column 202c; the fit ball 202a is used for being matched with the fit port 201c-1, the pressure relief port is closed during the matching, the pressure relief port is opened during the separation, the third spring 202b jacks up the fit ball to be matched with the fit port 201c-1, the pressure relief column 202c is used for connecting the fit ball 202a and the fit disc 202d, after the fit ball 202a is opened to a certain position, the air outlet 201c-3 is opened again, and the pressure relief assembly 200 is guaranteed to release burst high-temperature gas with excessive pressure and cannot leak pressure.

When the supercritical fluid in the steam pipeline is supplied to the turbine, sudden pressure of the pipeline is suddenly increased, the high-pressure fluid pushes the matching ball 202a away from the third spring 202b in the air inlet cavity 101a-1, the fluid enters the air outlet cavity 201c, when the quantity of the fluid suddenly increased is not large, the fluid enters the air outlet cavity 201c and slowly flows back to the air inlet cavity 101a-1 and is supplied to the turbine by the steam pipeline connected with the air outlet cavity 101a-2, when the quantity of the fluid suddenly increased in the air outlet cavity 201c is large, the matching disc 202d is pushed away from the air outlet 201c-3 after the matching ball 202a is pushed away, and excessive high-pressure fluid is discharged to a safety area from the air outlet pipeline connected with the air outlet disc 201b, so that the sudden pressure is released, and the pipeline explosion is prevented from generating safety problems.

Embodiment 3, referring to fig. 1 and 2, further provides a control system according to a third embodiment of the present utility model, which includes a control unit 300 including a controller 301, a pressure sensor 302 and a motor driver 303, wherein the controller 301 is disposed on a side of a support table, the pressure sensor 302 is disposed on a side of a valve housing 101a, the motor driver 303 is disposed on a side of a motor 101e, and the pressure sensor 302 and the motor driver 303 are connected to the controller 301; the controller 301 is a PLC controller (S7-1200) that receives the pressure signal of the pressure sensor 302, sends a control signal to control the motor driver 303, the pressure sensor 302 is a siemens P300 (with high precision and reliability, suitable for various high voltage and temperature conditions), the motor driver 303 is a siemens G120 that senses the pressure of the first spring 103b when pushed open, and receives the control signal of the controller 300 to control the motor 101e to operate.

When in use, when supercritical fluid enters the valve casing 101a from the air inlet cavity 101a-1, high-pressure fluid jacks up the flow control member 102 from the flow control cavity 101a-3, the flow limiting head 102a is jacked up, the pressure stabilizing rod 103c is jacked up, the first spring 102c and the second spring 103b are compressed, the pressure sensor 302 behind the first spring 102c senses pressure and sends a pressure signal to the controller 301, the fluid is supplied to the turbine through the flow control cavity 101a-3 by a steam pipeline connected with the air outlet cavity 101a-2 to generate electricity, when the pressure value of the pressure signal is lower than a preset value, the controller 301 controls the motor driver 303 to work, the motor 101e is controlled to move the driving rod 103a upwards to reduce the pressure born by the second spring 103b, the distance that the pressure increase flow-limiting head 102a that the first spring 102c receives is jacked up increases the fluid circulation opening, the flow increases, in the pressure value of pressure signal is higher than the default, the controller 301 controls motor driver 303 work, control motor 101e moves down actuating lever 103a, increase the pressure that the second spring 103b receives, the distance that the pressure decrease flow-limiting head 102a that the first spring 102c receives is jacked up decreases the fluid circulation opening, the fluid flow reduces, so make the fluid flow who supplies the turbine stable, so can remote control flow control valve, do not need manual operation, prevent safety problems such as scald emergence manual regulation.

It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (9)

1. A flow regulating valve, characterized in that: comprising the steps of (a) a step of,

the flow control assembly (100) comprises a valve body (101), a flow control part (102) and a pressure stabilizing part (103), wherein the valve body (101) is matched with the flow control part (102), the valve body (101) is matched with the pressure stabilizing part (103), the valve body (101) comprises a valve shell (101 a), a pressure regulating head (101 b), a connecting disc (101 c), a supporting table (101 d) and a motor (101 e), the pressure regulating head (101 b) is in threaded fit with the valve shell (101 a), the connecting disc (101 c) is arranged on the side face of the valve shell (101 a), the supporting table (101 d) is arranged on the upper side face of the valve shell (101 a), and the motor (101 e) is arranged on the upper side face of the supporting table (101 d);

the pressure release assembly (200) comprises a connecting shell (201) and a pressure release piece (202), wherein the connecting shell (201) is matched with the pressure release piece (202), and the connecting shell (201) is connected with the lower side of the valve body (101).

2. The flow regulating valve as defined in claim 1, wherein: the supporting table (101 d) comprises a voltage stabilizing bin (101 d-1), and the voltage stabilizing bin (101 d-1) is arranged on the side face of the supporting table (101 d).

3. The flow regulating valve according to claim 2, wherein: the valve casing (101 a) comprises an air inlet cavity (101 a-1), an air outlet cavity (101 a-2), a flow control cavity (101 a-3), a regulating screw thread (101 a-4) and an explosion venting port (101 a-5), wherein the air inlet cavity (101 a-1) is arranged on the side face of the valve casing (101 a), the air outlet cavity (101 a-2) is arranged on the other side face of the valve casing (101 a), the flow control cavity (101 a-3) and the regulating screw thread (101 a-4) are arranged on the upper side face of the valve casing (101 a), and the explosion venting port (101 a-5) is arranged on the lower side face of the valve casing (101 a).

4. A flow regulating valve according to claim 2 or 3, wherein: the pressure regulating head (101 b) comprises a rotating head (101 b-1), rotating threads (101 b-2), a matching column (101 b-3) and a regulating and controlling disc (101 b-4), wherein the rotating threads (101 b-2) are arranged on the inner side surface of the rotating head (101 b-1), the rotating head (101 b-1) is arranged on the side surface of the matching column (101 b-3), and the regulating and controlling disc (101 b-4) is arranged on the other side surface of the matching column (101 b-3).

5. The flow regulating valve as defined in claim 4, wherein: the flow control piece (102) comprises a flow limiting head (102 a), a sealing column (102 b) and a first spring (102 c), wherein the sealing column (102 b) is arranged on the upper end face of the flow limiting head (102 a), and the first spring (102 c) is arranged on the upper side face of the sealing column (102 b);

the sealing column (102 b) comprises a sealing wall (102 b-1), and the sealing wall (102 b-1) is arranged on the upper side surface of the sealing column (102 b).

6. The flow regulating valve as defined in claim 5, wherein: the voltage stabilizing piece (103) comprises a driving rod (103 a), a second spring (103 b) and a voltage stabilizing rod (103 c), wherein the driving rod (103 a) is arranged at one end of the second spring (103 b), and the voltage stabilizing rod (103 c) is arranged at the other end of the second spring (103 b);

the driving rod (103 a) comprises a threaded column (103 a-1) and a pushing disc (103 a-2), and the pushing disc (103 a-2) is arranged on the lower side surface of the threaded column (103 a-1);

the connecting shell (201) comprises a connecting column (201 a), an exhaust disc (201 b) and an exhaust cavity (201 c), wherein the connecting column (201 a) is arranged on the upper side face of the connecting shell (201), the exhaust disc (201 b) is arranged on the lower side face of the connecting shell (201), and one end of the connecting shell (201) is provided with the exhaust cavity (201 c) in a penetrating mode.

7. The flow regulating valve as defined in claim 6, wherein: the exhaust cavity (201 c) comprises a matching port (201 c-1), a spring cavity (201 c-2) and an air outlet (201 c-3), wherein the matching port (201 c-1) is arranged on the upper end face of the spring cavity (201 c-2), and the air outlet (201 c-3) is arranged on the lower end face of the spring cavity (201 c-2).

8. The flow regulating valve as defined in claim 7, wherein: the pressure relief piece (202) comprises a matching ball (202 a), a third spring (202 b), a pressure relief column (202 c) and a matching disc (202 d), wherein the third spring (202 b) and the pressure relief column (202 c) are arranged on the lower end face of the matching ball (202 a), and the matching disc (202 d) is arranged on the lower end face of the pressure relief column (202 c).

9. A control system, characterized by: comprising a flow regulating valve according to any one of claims 1 to 8; the method comprises the steps of,

the control assembly (300) comprises a controller (301), a pressure sensor (302) and a motor driver (303), wherein the controller (301) is arranged on the side surface of the supporting table, the pressure sensor (302) is arranged on the side surface of the valve casing (101 a), the motor driver (303) is arranged on the side surface of the motor (101 e), and the pressure sensor (302) and the motor driver (303) are connected with the controller (301).