TWM615089U - Boiler damper controller and safety protection device - Google Patents

Abstract

A boiler damper controller and safety protection device, a boiler damper controller and safety protection device, comprising: a controller, a damper controller, a safety protection device and a human-machine interface, the controller provides instructions and actions, and The damper controller, the safety protection device, and the man-machine interface are electrically connected. The damper controller is located at the air duct of a boiler and includes a motor driving a control shaft, the control shaft driving a damper, and the damper Set in the air duct, the control shaft extends to the safety protection device, the safety protection device includes a substrate electrically connected to the motor and the controller, and an electronic signal detector and a signal conversion unit are provided on the substrate When the control shaft extends to the safety protection device, it is judged by the electronic signal detector. When the rotation angle of the control shaft changes, different signal detection judgments are achieved, which are transmitted to the controller and then to the man-machine interface. The human-machine interface provides users with operation and interpretation data.

Description

Boiler damper controller and safety protection device

This creation is about the design of a damper controller installed at the air inlet of the boiler to control the air intake flow of the damper.

For example, boilers are used in electric power, machinery, metallurgy, chemical, textile, paper, food and other industries. The boiler uses combustible fluid such as gas or oil into a boiler body and ignites and burns. When the combustible fluid burns, it must be matched with combustible fluid. The equal proportion of air enters the boiler body in order to achieve efficient combustion. At present, the way that the combustible fluid enters the boiler body and the air enters the boiler body are calculated in advance, and the size of the damper is controlled by automatic control. Switch flow.

When the ratio of air and combustible fluid entering the boiler body is incorrect, there will be a problem of poor combustion efficiency when there is more air than combustible fluid. In addition, when there is more combustible fluid than air, combustible fluid cannot be completely burned and will accumulate in the boiler. When the accumulation reaches a certain range, if the correction is not found in time, the boiler will eventually explode. Therefore, the damper controls how much air enters the boiler body is a very important structure. The currently known damper control devices are as follows:

One is the "multi-stage flow controller" filed on September 17, 2018, with Patent Publication No. M572478. This design uses a circuit board to be electrically connected to a drive motor, and the drive motor is combined with a drive rod. And can drive the drive rod, the drive rod is linked to a plurality of segment number control groups, each segment number control group is matched with a micro switch, each segment number control group is stacked, and each represents a different angle, when the When the drive motor rotates the drive rod to match the selected segment control group, use the selected segment control group to turn to a specific angle to touch the micro switch, and the drive motor stops operating; this design will be damaged due to the micro switch , Make the drive motor and the drive rod rotate higher than expected or not meet the expectation, causing the wrong mixing ratio of the air to the combustible fluid, or the controller controls the circuit board at the remote end to make the drive motor rotate, but the drive motor is actually not driven , The person controlling at the remote end can only know the angle of the rotation of the driving rod, but does not know whether the driving rod is rotated to the specified angle according to the rotation.

The other is the application on January 18, 2018, and the announcement on August 1, 2018. Patent No. I631300 of the "Shutter Drive". This design has a disclosure that can see that the drive rod rotates to a specified angle, but it must be Only at the boiler site can the judgment be made directly by vision. This system is directly equipped with an identification board on the damper driver. The identification board has an angle indicator sheet. A pointer can swing on the angle indicator sheet for identification by the field staff.

Although the "damper driver" of Patent Announcement No. I631300 has an air volume display for engineers to identify the actual air volume, this design is limited to on-site manual identification and cannot make the most immediate response, and the error rate and miss rate of manual identification High, the use still has its risk, and because it is limited to on-site manual identification, it consumes manpower and increases the safety of people on site.

It is known that most of the existing damper controllers do not have a safety mechanism to check the actual damper opening, and use it has its risks. There are also designs to check the actual damper opening, but it must be recognized by the human eye on the spot. This method of identification by the on-site staff, It is labor intensive, personnel is in a dangerous environment, and there is a high error rate and omission rate in the manual identification of the staff, and the staff cannot stare at the air door controller all the time.

The boiler damper controller and safety protection device of this creation includes: a controller, a damper controller, a safety protection device and a human-machine interface; the controller provides commands and actions, and is electrically connected to the damper controller, The safety protection device and the man-machine interface; the damper controller is located at the air duct of a boiler and includes: a motor, a deceleration mechanism, a control shaft and a damper. The motor drives the deceleration mechanism, and the deceleration mechanism drives Rotate the control shaft, the control shaft can drive the damper in linkage, and the damper is arranged in the air duct. When the control shaft drives the damper in conjunction, the passage space of the air duct can be controlled, and the control shaft extends to The safety protection device; the safety protection device includes a substrate, the substrate is electrically connected to the motor and the controller, the substrate is provided with an electronic signal detector and a signal conversion unit, the control shaft extends to the safety When the protection device is judged by the electronic signal detector, when the control shaft rotates to achieve different signal detection judgments, the electronic signal detector judges the data by the signal conversion unit to convert the angle data, and the rotation angle data The substrate is provided to the controller and then to the man-machine interface; the man-machine interface provides user operation and interpretation data.

This creative boiler damper controller and safety protection device, the actual rotation angle of the damper can be monitored remotely, and all signals are converted into data, which can achieve functions such as automatic warning and automatic shutdown in case of danger. The use is more user-friendly and more user-friendly. It is labor-saving, more reliable, and safer. It must be visually judged by on-site personnel, and it is less error-free and labor-saving. It is not restricted to be on-site and can be safely monitored at any location. It is more suitable for realizing unmanned chemical factories.

Please refer to the first, second, third, fourth, fifth and sixth pictures. The boiler of this creation includes: a boiler body 10, a fuel pipe 20, a wind pipe 30, A damper controller 40, a safety protection device 50, and a man-machine interface 60.

The boiler body 10 is matched with a controller 111, the controller 111 is arranged in a control box 11, the control box 11 is arranged beside the boiler body 10, the controller 111 provides instructions and actions, and is electrically connected to the damper control The controller 40, the safety protection device 50, and the man-machine interface 60; the controller 111 is a single crystal controller or a PLC controller (programmable logic controller, PLC for short).

One end of the fuel pipe 20 is connected to a source of gas (or other combustible fluid), and the other end is connected to the boiler body 10 to provide gas with the air pipe 30 to enter the boiler body 10.

One end of the air pipe 30 is connected to a blower 31, and the other end is connected to the boiler body 10, and the blower 31 provides an air source to cooperate with the fuel pipe 20 to enter the boiler body 10.

The damper controller 40 is arranged on the air duct 30 near the boiler body 10, and includes a motor 41, a deceleration mechanism 42, a control shaft 43, and a damper 44. The motor 41 drives the deceleration mechanism 42, and the deceleration The mechanism 42 drives the control shaft 43, the control shaft 43 can drive the damper 44 in linkage, the damper 44 is arranged in the air duct 30, when the control shaft 43 drives the damper 44 in conjunction, the air duct can be controlled For the size of the passage space of 30, the control shaft 43 extends to the safety protection device 50, and the control shaft 43 extends out as a non-circular column 431, as shown in the second and fifth figures.

The safety protection device 50 includes a substrate 51 which is electrically connected to the motor 41 and the controller 111. The substrate 51 is provided with an electronic signal detector 52 and a signal conversion unit 53, and the control shaft 43 When extended to the safety protection device 50, it is interpreted by the electronic signal detector 52. The electronic signal detector 52 is provided with a non-circular hole 521 for the non-circular cylinder 431 to penetrate. The electronic signal detector 52 It is a resistance signal detection method. When the control shaft 43 rotates, the non-circular cylinder 431 will rotate in the non-circular hole 521. The electronic signal detector 52 will generate different resistance values at different angles to achieve different According to the signal detection and judgment, the resistance value data corresponding to the rotation position is converted into angle data by the signal conversion unit 53, and the converted angle data is provided to the substrate 51 for transmission to the controller 111 and then to the man-machine interface 60, See the sixth picture.

The man-machine interface 60 provides operation and interpretation data, which can be a personal computer or smart phone, etc. The size (or angle, flow) of the damper 44 of the damper controller 40 can be operated through the controller 111, and it can also display The electronic signal detector 52 reads the angle of the control shaft 43 for the operator to interpret whether the operated data is the same as the actual data of the damper 44. The comparison result can be set to a warning device 61. When the damper 44 is actually When the data of is different from the operating data, the man-machine interface 60 can generate a sound or light warning through the warning device 61.

As shown in the seventh figure, the operation flow is:

A. Start, start the boiler.

B. Set the damper data. The man-machine interface 60 sets the damper data, which is the flow rate at which the damper opens the air duct 30.

C. The damper data is transmitted, and the setting data of the man-machine interface 60 is transmitted to the safety protection device 50 and the damper controller 40.

D. Rotate the damper, and use the damper controller 40 to rotate the actual angle of the damper 44.

E. Compare the damper data, and compare the damper data of step B with the actual angle of the damper 44 of step D to see if it matches or does not match.

F. Match, when the comparison damper data is consistent, go to step J.

G. Inconsistent. When the comparison damper data is inconsistent, go to step H.

H. A warning is issued, and the safety protection device 50 issues a warning through the man-machine interface 60.

I. Shutdown/inspection. When the man-machine interface 60 issues a warning, the maintenance personnel will perform an inspection or stop the boiler. If there is no problem, return to step A.

J. Finish, repeat step E.

With the above structure, when the fuel pipe 20 sends a set flow of gas into the boiler body 10, it is simultaneously transmitted to the controller 111, and the controller 111 is connected to the damper controller 40 through a pre-calculated ratio. The motor 41 activates the deceleration mechanism 42 to drive the control shaft 43 and the damper 44, the electronic signal detector 52 of the safety protection device 50 detects the control shaft 43 at the same time, and then sends a signal back to the controller 111 Then to the man-machine interface 60.

From the structure of the above specific embodiment, the following benefits can be obtained: the actual rotation angle of the damper 44 can be monitored remotely, and all signals are converted into data, which can achieve functions such as automatic warning and automatic shutdown in case of danger. It is more humane, more labor-saving, more reliable and safer, and knowledge must be visually judged by the on-site personnel, no mistakes, more labor-saving, and unrestricted need to be on-site, safe monitoring at any place, more suitable Realize an unmanned chemical factory.

10: Boiler body 11: Control box 111: Controller 20: Fuel pipe 30: duct 31: Blower 40: Throttle controller 41: Motor 42: Deceleration mechanism 43: control axis 431: non-circular cylinder 44: Throttle 50: Safety protection device 51: substrate 52: Electronic signal detector 521: non-circular hole 53: signal conversion unit 60: Human-Machine Interface A: start B: Set the damper data C: transfer damper data D: Rotate the damper E: Compare the throttle data F: match G: does not match H: Issue a warning I: shutdown/check J: Done

The first picture is the overall structure of the creation. The second picture is a three-dimensional combined picture created. The third picture is a partial cross-sectional view of the second picture, which is a completely closed flow. The fourth picture is a partial cross-sectional view of the second picture created, this is the fully open flow. The fifth picture is a schematic diagram of the creation of rotating the damper and interpreting the angle of the damper. The sixth figure is a schematic diagram of the connection relationship between the creative structures. The seventh figure is the flow chart of the creation operation.

30: duct

40: Throttle controller

41: Motor

42: Deceleration mechanism

43: control axis

431: non-circular cylinder

44: Throttle

50: Safety protection device

51: substrate

52: Electronic signal detector

521: non-circular hole

53: signal conversion unit

Claims (7)

A boiler damper controller and safety protection device, comprising: a controller, a damper controller, a safety protection device and a man-machine interface; the controller provides instructions and actions, and is electrically connected to the damper controller and the safety The protection device and the man-machine interface; the damper controller is located at the air duct of a boiler and includes: a motor, a control shaft and a damper, the motor drives the control shaft, and the control shaft can drive the damper in conjunction , The damper is arranged in the air duct, when the control shaft drives the damper in conjunction, the size of the passage space of the air duct can be controlled, and the control shaft extends to the safety protection device; the safety protection device includes a base plate, The substrate is electrically connected to the motor and the controller. The substrate is provided with an electronic signal detector and a signal conversion unit. When the control shaft extends to the safety protection device, it is read by the electronic signal detector. When the rotation angle of the control shaft changes, different signal detection and judgments are achieved. The electronic signal detector converts the angle data by the signal conversion unit. The rotation angle data is then provided to the substrate and transmitted to the controller and then to the person. Machine interface; this man-machine interface provides users with operation and interpretation data. For example, the boiler damper controller and safety protection device of claim 1, where the electronic signal detector should be a resistance signal detection method. For example, the boiler damper controller and safety protection device of claim 1, wherein the control shaft extends out as a non-circular cylinder, the electronic signal detector is provided with a non-circular hole for the non-circular cylinder to penetrate, the non-circular cylinder The circular cylinder rotates in the non-circular hole. For example, the boiler air door controller and safety protection device of claim 3, where the electronic signal detector should be a resistance signal detection method. For example, the boiler air door controller and safety protection device of claim 1, wherein the human-machine interface can be a personal computer or a smart phone. For example, the boiler damper controller and safety protection device of claim 5 further includes: a warning device. When the actual data of the damper is different from the operating data, the man-machine interface can generate sound or light warnings through the warning device. For example, the boiler damper controller and safety protection device of claim 1, wherein the damper controller further includes: a deceleration mechanism arranged between the motor and the control shaft, and the control shaft is driven by the motor.

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