CN215831165U

CN215831165U - Electric actuator based on accurate control technology

Info

Publication number: CN215831165U
Application number: CN202120759584.6U
Authority: CN
Inventors: 马玉波
Original assignee: Zhongke Kerun Tianjin Technology Co ltd
Current assignee: Zhongke Kerun Tianjin Technology Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2022-02-15
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses an electric actuator based on an accurate control technology, which comprises an electric actuator body and a valve body, wherein the valve body is arranged below the electric actuator body, two ends of the valve body are communicated with pipelines, a PID (proportion integration differentiation) regulator is arranged on the upper surface wall of the electric actuator body, a display panel is arranged on the front surface wall of the electric actuator body, a flow regulator is arranged below the display panel, and a connecting support is arranged between the electric actuator body and the valve body; the electric actuator based on the precise control technology is provided with the PID regulator, the flow regulator and the volume flow meter, and can realize the precision of the introduction of the fluid medium by providing a fluid flow signal and further controlling the opening of the butterfly valve, so that the controllability is higher; through setting up electric heating pipe, temperature sensor and temperature controller, can avoid letting the drive mechanism of its electric actuator body take place the moment of torsion overload problem because of water solidifies, practicality, security are higher.

Description

Electric actuator based on accurate control technology

Technical Field

The utility model relates to the technical field of electric actuators, in particular to an electric actuator based on an accurate control technology.

Background

The electric actuator is a control system for controlling the opening or closing of the valve, the electric actuator has a wide application range, can control various valves to be used, when the valve is closed, fluid in the valve and a pipeline does not flow, the electric actuator is a field instrument for controlling the flow of a medium by driving the valve by a motor, and compared with a pneumatic actuator, the electric actuator has the advantages of convenience in energy supply, simple structure, high precision and capability of frequently acting, so that the electric actuator is widely applied to industries such as electric power, chemical metallurgy and the like. The electric actuator consists of two parts, namely a motor part which is mainly a direct current or alternating current motor, and most of the motor part is an asynchronous motor; and the power circuit is used for driving the motor. The key of the electric actuator lies in the control technology of the motor. Foreign rates first apply the frequency conversion technology to electric actuators.

The prior art has the following defects or problems:

1. when an electric actuator in the prior art controls the opening of a valve, the accuracy of the electric actuator for controlling the opening of the valve is not enough because the instantaneous flow and the accumulated flow of a circulating medium in a pipeline can not be controlled;

2. in addition, when the existing starting actuator is in a closed state of a control valve, due to the influence of low environmental temperature, fluid inside a pipeline can be frozen, and then the frozen fluid can cause overload influence on the control use of the pneumatic actuator, so that the safety performance is not enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric actuator based on an accurate control technology aiming at the defects of the prior art, and solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: electric actuator based on accurate control technique, including electric actuator body and valve body, the below of electric actuator body is provided with the valve body, the both ends intercommunication of valve body has the pipeline, the last wall of electric actuator body is provided with the PID regulator, the preceding table wall of electric actuator body is provided with display panel, display panel's below is provided with flow regulator, install linking bridge between electric actuator body and the valve body, the inboard lower extreme transmission that is close to the electric actuator body of linking bridge is connected with the valve rod, and the valve rod seal extends to the valve body in, the bottom fixedly connected with butterfly valve of valve rod, left be provided with volumetric flowmeter on the pipeline, volumetric flowmeter's fixedly connected with ring flange.

As a preferable technical scheme of the utility model, an electric heating pipe is arranged in the pipeline, and a sealing fixed seat is embedded in the outer surface wall of the electric heating pipe close to the pipeline.

As a preferable technical scheme of the utility model, the outer surface wall of the pipeline is provided with a temperature sensor, and the bottom end of the valve body is provided with a temperature controller.

As a preferred technical scheme of the present invention, the number of the electric heating pipes is several, the electric heating pipes are symmetrically distributed on the inner side of the pipeline, the number of the electric heating pipes is several, and the electric heating pipes are symmetrically distributed on the inner side of the pipeline.

As a preferred technical scheme of the utility model, the temperature sensor is electrically connected with the temperature controller, and the temperature controller is electrically connected with the flange plate through a lead.

As a preferable technical scheme of the utility model, the capacity flowmeter is connected with the pipeline through a flange plate and a bolt.

As a preferable technical scheme of the utility model, the capacity flowmeter is in electric signal connection with a flow regulator, the flow regulator is electrically connected with a PID regulator, and the PID regulator is electrically connected with the electric actuator body.

As a preferable technical solution of the present invention, the electric actuator body is detachably connected to the valve body through a connecting bracket.

Compared with the prior art, the utility model provides the electric actuator based on the accurate control technology, which has the following beneficial effects:

1. according to the electric actuator based on the precise control technology, the PID regulator, the flow regulator and the volume flow meter are arranged, instantaneous flow and accumulated flow of fluid in a pipeline are monitored in real time through the volume flow meter, flow signals are sent into the flow regulator through the volume flow meter, the PID regulator receives and processes the flow signals and provides regulating signals, the electric actuator body can be controlled to transmit power to the butterfly valve, opening degree regulation is carried out in a valve body of the butterfly valve, the purpose of regulation is achieved, the precision of introducing fluid media can be achieved by controlling the opening degree of the butterfly valve, and controllability is higher;

2. this electric actuator based on accurate control technique, through setting up electric heating pipe, temperature sensor and temperature controller, when the valve body is under the closed condition by electric actuator body control, the fluid temperature of being blocked in the pipeline through temperature sensor real-time supervision, when treating the temperature and being less than the water solidification point, can control electric heating pipe electric heating by the temperature controller and heat up, let the rivers fluid that stop in its valve body heat up, thereby can avoid letting the drive mechanism of its electric actuator body take place the moment of torsion overload problem because of water solidification, in addition can be in real time according to the temperature signal that transmits in the temperature sensor to its electric heating pipe carry out the controllable heating through the temperature controller, one can prevent that electric heating pipe overheat and cause its damage, its two consumption of the heating energy can be controlled, the practicality is higher.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the internal structure of the valve body according to the present invention;

FIG. 3 is an enlarged view of portion A of the present invention;

fig. 4 is a schematic structural diagram of the control principle of the present invention.

In the figure: 1. an electric actuator body; 2. a valve body; 3. a pipeline; 4. a PID regulator; 5. a display panel; 6. a flow regulator; 7. connecting a bracket; 8. a valve stem; 9. a butterfly valve; 10. a volumetric flow meter; 11. a flange plate; 12. an electric heating tube; 13. sealing the fixed seat; 14. a temperature sensor; 15. and (7) a temperature controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: electric actuator based on accurate control technique, including electric actuator body 1 and valve body 2, the below of electric actuator body 1 is provided with valve body 2, the both ends intercommunication of valve body 2 has pipeline 3, electric actuator body 1's last wall is provided with PID regulator 4, electric actuator body 1's preceding table wall is provided with display panel 5, display panel 5's below is provided with flow control appearance 6, install linking bridge 7 between electric actuator body 1 and the valve body 2, the inboard lower extreme transmission that is close to electric actuator body 1 of linking bridge 7 is connected with valve rod 8, and valve rod 8 seals and extends to in the valve body 2, valve rod 8's bottom fixedly connected with butterfly valve 9, be provided with volumetric flowmeter 10 on the left pipeline 3, volumetric flowmeter 10's fixedly connected with ring flange 11.

In this embodiment, an electric heating tube 12 is disposed inside the pipe 3, and a sealing fixing seat 13 is embedded in the outer wall of the electric heating tube 12 close to the pipe 3. The sealed fixed seat 13 can provide the heating treatment for the water fluid in the pipeline 3 by the electric heating pipe 12 under the condition of ensuring the stability of the sealing of the joint of the electric heating pipe 12. The outer surface wall of the pipeline 3 is provided with a temperature sensor 14, and the bottom end of the valve body 2 is provided with a temperature controller 15; the quantity of electric heating pipe 12 is a plurality of, and electric heating pipe 12 symmetric distribution is in the inboard of pipeline 3, and temperature sensor 14 and temperature controller 15 electric connection, temperature controller 15 pass through the wire and are connected with ring flange 11 electricity. The temperature sensor 14 monitors the temperature of the fluid blocked in the pipeline 3 in real time, and the temperature controller 15 can be used for receiving the transmission signal of the temperature sensor 14 and realizing controllable heating treatment on the electric heating pipe 12. The volumetric flowmeter 10 is bolted to the pipe 3 by a flange 11. The flange 11 can be used to assemble the mounting location of the volumetric flow meter 10. The volume flowmeter 10 is electrically connected with the flow regulator 6, the flow regulator 6 is electrically connected with the PID regulator 4, and the PID regulator 4 is electrically connected with the electric actuator body 1. The instantaneous flow and the accumulated flow of the fluid in the pipeline 3 are monitored in real time through the volume flow meter 10, and the volume flow meter 10 sends a flow signal to the flow regulator 6, so that the PID regulator 4 receives, processes and provides a regulating signal, and the electric actuator body 1 can be controlled to transmit power to the butterfly valve 9 and regulate the opening degree of the valve body 2, so that the purpose of regulation is achieved. The electric actuator body 1 is detachably connected with the valve body 2 through the connecting bracket 7. The connecting bracket 7 can be used for assembling the connecting position of the electric actuator body 1 and the valve body 2.

The working principle and the using process of the utility model are as follows: firstly, the instantaneous flow and the accumulated flow of the fluid in the pipeline 3 are monitored in real time through a volume flow meter 10, and a flow signal is sent to a flow regulator 6 through the volume flow meter 10, so that the PID regulator 4 receives and processes the flow signal and provides a regulating signal, the electric actuator body 1 can be controlled to transmit power to a butterfly valve 9, the opening of the valve body 2 is regulated, the regulation purpose is achieved, the precision of introducing the fluid medium can be realized by controlling the opening of the butterfly valve 9, and the controllability is higher; when the valve body 2 is controlled to be in a closed state by the electric actuator body 1, the temperature of the fluid blocked in the pipeline 3 is monitored in real time through the temperature sensor 14, when the temperature is lower than the freezing point of water, the temperature controller 15 can control the electric heating pipe 12 to be electrically heated and heated, and the water fluid blocked in the valve body 2 is heated, so that the problem that the transmission mechanism of the electric actuator body 1 is subjected to torque overload due to water solidification can be avoided, in addition, the electric heating pipe 12 can be controllably heated according to the temperature signal transmitted in the temperature sensor 14 through the temperature controller 15, the electric heating pipe 12 can be prevented from being excessively heated to be damaged, the consumption of two heating energy sources is controlled, and the practicability is high.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Electric actuator based on accurate control technique, its characterized in that: the electric actuator comprises an electric actuator body (1) and a valve body (2), wherein the valve body (2) is arranged below the electric actuator body (1), pipelines (3) are communicated with two ends of the valve body (2), a PID (proportion integration differentiation) regulator (4) is arranged on the upper surface wall of the electric actuator body (1), a display panel (5) is arranged on the front surface wall of the electric actuator body (1), a flow regulator (6) is arranged below the display panel (5), a connecting bracket (7) is arranged between the electric actuator body (1) and the valve body (2), a valve rod (8) is connected to the inner side of the connecting bracket (7) in a transmission manner close to the lower end of the electric actuator body (1), the valve rod (8) extends into the valve body (2) in a sealing manner, a butterfly valve (9) is fixedly connected to the bottom end of the valve rod (8), and a capacity flow meter (10) is arranged on the left pipeline (3), and the volume flowmeter (10) is fixedly connected with a flange plate (11).

2. The electric actuator based on the precise control technology according to claim 1, characterized in that: an electric heating pipe (12) is arranged inside the pipeline (3), and a sealing fixed seat (13) is embedded in the outer wall, close to the pipeline (3), of the electric heating pipe (12).

3. The electric actuator based on the precise control technology according to claim 1, characterized in that: the outer wall of the pipeline (3) is provided with a temperature sensor (14), and the bottom end of the valve body (2) is provided with a temperature controller (15).

4. The electric actuator based on the precise control technology according to claim 2, characterized in that: the number of the electric heating pipes (12) is a plurality of, the electric heating pipes (12) are symmetrically distributed on the inner side of the pipeline (3), the number of the electric heating pipes (12) is a plurality of, and the electric heating pipes (12) are symmetrically distributed on the inner side of the pipeline (3).

5. The electric actuator based on the precise control technology according to claim 3, characterized in that: the temperature sensor (14) is electrically connected with the temperature controller (15), and the temperature controller (15) is electrically connected with the flange plate (11) through a lead.

6. The electric actuator based on the precise control technology according to claim 1, characterized in that: and the volume flowmeter (10) is connected with the pipeline (3) through a flange plate (11) by bolts.

7. The electric actuator based on the precise control technology according to claim 1, characterized in that: the volume flowmeter (10) is in electric signal connection with a flow regulator (6), the flow regulator (6) is electrically connected with the PID regulator (4), and the PID regulator (4) is electrically connected with the electric actuator body (1).

8. The electric actuator based on the precise control technology according to claim 1, characterized in that: the electric actuator body (1) is detachably connected with the valve body (2) through a connecting support (7).