Heating furnace regulating valve positioner

Abstract

The utility model relates to the technical field of regulating valve positioners, and provides a heating furnace regulating valve positioner, which comprises a regulating valve body on which a valve rotating shaft is mounted, and further comprises a gear transmission module which is connected with the valve rotating shaft and is used for driving the regulation of the valve rotating shaft; the air cylinder driving module is connected with the valve rotating shaft and used for driving adjustment of the valve rotating shaft; the photoelectric encoder is connected with the valve rotating shaft and is used for detecting the working state of the valve rotating shaft; and the motor is installed on the adjusting valve body, and an output shaft of the motor is connected with the gear transmission module. The motor and air cylinder dual-drive module is connected with the valve rotating shaft, when the motor breaks down and cannot drive the valve rotating shaft to rotate, the photoelectric encoder can rapidly transmit a motor fault signal to the controller, the controller immediately controls the air cylinder drive module to work, and it is ensured that a valve adjusting system can still operate normally; similarly, when the air cylinder breaks down, the controller controls the motor to adjust.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of governing valve positioner, specifically relates to a heating furnace governing valve positioner. BACKGROUND

[0002] In industrial production, the accurate control of heating furnace governing valve is crucial for the stability and safety of production process. Traditional heating furnace governing valve positioner often has the following problems:

[0003] Single control mode: Most of them only rely on a single driving mode to adjust the valve shaft, such as using only motor drive or pneumatic cylinder drive. When the driving mode fails, the entire valve adjustment system will not work normally, resulting in production interruption, affecting production efficiency and product quality, increasing maintenance cost and downtime.

[0004] Lack of real-time monitoring and feedback: It is difficult to monitor the working state of the valve shaft in real time and accurately, and it is difficult to find abnormal conditions in the valve adjustment process in time, such as motor or pneumatic cylinder failure, valve shaft jamming and other problems, so that effective measures can be taken at the first time of failure, which may cause production accidents or unnecessary losses.

[0005] In order to solve at least part of the above problems, a heating furnace governing valve positioner is proposed. CONTENT OF THE UTILITY MODEL

[0006] The utility model proposes a kind of heating furnace governing valve positioner, motor and pneumatic cylinder double drive module are connected valve shaft, when motor fails and cannot drive valve shaft rotation, photoelectric encoder can rapidly transmit motor fault signal to controller, controller immediately controls pneumatic cylinder drive module to work, ensure that valve adjustment system can still operate normally;Similarly, when pneumatic cylinder fails, controller controls motor adjustment.

[0007] The technical scheme of the utility model is as follows: a kind of heating furnace governing valve positioner, including regulating valve body, valve shaft is installed on it, further comprising:

[0008] Gear transmission module is connected to the valve shaft, used to drive the adjustment of the valve shaft;

[0009] Pneumatic cylinder drive module is connected to the valve shaft, used to drive the adjustment of the valve shaft;

[0010] Photoelectric encoder is connected to the valve shaft, used to detect the working state of the valve shaft;

[0011] Motor is installed on the regulating valve body, the output shaft of the motor is connected to the gear transmission module, used to drive the gear transmission module to work;

[0012] A controller electrically connected with the motor and the cylinder of the cylinder driving module, used for controlling the operation of the motor and the cylinder, and the controller and the photoelectric encoder are in data transmission.

[0013] Preferably, the gear driving module comprises a large gear and a small gear, the central shaft of the large gear is fixedly connected with the output end of the shaft coupling of the motor, the large gear meshes with the small gear, and the center of the small gear is fixedly connected with the upper end of the valve shaft.

[0014] Preferably, the cylinder driving module comprises a connecting ring, a connecting rod and a cylinder, the cylinder is rotatably arranged on the regulating valve body, the telescopic rod of the cylinder is fixedly provided with the connecting ring at the end, one end of the connecting rod is rotatably connected with the connecting ring, and the other end of the connecting rod is fixedly connected with the valve shaft.

[0015] Preferably, the photoelectric encoder comprises a code disc and a photoelectric detector, the photoelectric detector is fixedly arranged on the regulating valve body, and the code disc is fixedly arranged on the lower part of the valve shaft.

[0016] Preferably, the code disc and the photoelectric detector are correspondingly arranged.

[0017] Preferably, the regulating valve body is provided with regulating valve mounting discs at two ends respectively.

[0018] The working principle and beneficial effects of the utility model are as follows:

[0019] I. The motor and the cylinder double driving module are connected with the valve shaft, when the motor fails to drive the valve shaft to rotate, the photoelectric encoder can rapidly transmit the motor fault signal to the controller, the controller controls the cylinder driving module to work immediately, so that the valve regulating system can still operate normally; similarly, when the cylinder fails, the controller controls the motor to adjust, so that the reliability and stability of the system are greatly improved, and the production interruption caused by the failure of the driving part is reduced.

[0020] II. The photoelectric encoder is used for monitoring the rotation of the valve shaft in real time, once the motor or the cylinder fails, not only can the standby driving mode be rapidly switched to, but also an alarm signal can be sent to the terminal (computer or mobile phone), so that the operating personnel can know the running state and fault information of the valve in time, and the maintenance personnel can be arranged to overhaul in time.

[0021] III. The regulating valve mounting discs arranged at two ends of the regulating valve body facilitate the installation and dismounting of the regulating valve body. DRAWINGS

[0022] The utility model will be explained in further detail in combination with the drawings and specific embodiments.

[0023] Figure 1 The whole three-dimensional structure of the utility model Figure One

[0024] Figure 2 The whole three-dimensional structure of the utility model Figure Two ;

[0025] In the figure: 1, gear transmission module;101, large gear;102, pinion;2, photoelectric encoder;201, code disc;202, photoelectric detector;4, regulating valve body;401, regulating valve mounting disc;5, cylinder driving module;501, connecting ring;502, connecting rod;503, cylinder;6, valve shaft;7, motor. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0027] Please refer to Figure 1 - Figure 2 The utility model provides a kind of heating furnace regulating valve positioner, including regulating valve body 4, valve shaft 6 is installed on it, further include:

[0028] Gear transmission module 1 is connected with the valve shaft 6, for driving the adjustment of the valve shaft 6;

[0029] Cylinder driving module 5 is connected with the valve shaft 6, for driving the adjustment of the valve shaft 6;

[0030] Photoelectric encoder 2 is connected with the valve shaft 6, for detecting the working state of the valve shaft 6;

[0031] Motor 7 is installed on the regulating valve body 4, and the output shaft of the motor 7 is connected with the gear transmission module 1, for driving the gear transmission module 1 to work;

[0032] Controller is electrically connected with the cylinder 503 of motor 7 and cylinder driving module 5, for controlling the working of motor 7 and cylinder 503, and the controller and photoelectric encoder 2 carry out data transmission.

[0033] The controller is connected with terminal (computer or mobile phone).

[0034] ​The working principle of the technical scheme provided by the embodiment is as follows: in use, the controller can control the operation of the motor 7 and the air cylinder 503; when the valve shaft 6 is driven to rotate by the motor 7 to realize the opening and closing adjustment of the valve, the controller controls the air supply of one of the air pipes of the air cylinder 503, and at this time, the telescopic rod of the air cylinder 503 can move in the cylinder body; when the motor 7 is driven, the gear transmission module 1 can be driven to work, thereby driving the valve shaft 6 to adjust; when the valve shaft 6 is driven to work by the air cylinder driving module 5, the controller controls the pneumatic actuator of the air cylinder 503 to work, thereby driving the valve shaft 6 to rotate, and the control of the valve shaft 6 is realized.

[0035] The photoelectric encoder 2 can monitor the rotation of the valve shaft 6 in real time; when the motor 7 fails to drive the valve shaft 6 to rotate, the photoelectric encoder 2 transmits a motor 7 failure signal to the controller, the controller controls the air cylinder driving module 5 to work and sends an alarm signal to the terminal (computer or mobile phone); when the air cylinder 503 fails to drive the valve shaft 6 to rotate, the photoelectric encoder 2 transmits an air cylinder 503 failure signal to the controller, the controller controls the motor 7 to adjust and sends an alarm signal to the terminal (computer or mobile phone).

[0036] In some embodiments, the gear transmission module 1 comprises a large gear 101 and a small gear 102; the central shaft of the large gear 101 is fixedly connected to the output end of the shaft coupling of the motor 7; the large gear 101 engages the small gear 102; and the center of the small gear 102 is fixedly connected to the upper end of the valve shaft 6.

[0037] Specifically, the motor 7 drives the large gear 101 to rotate, the large gear 101 drives the small gear 102 to rotate, and the small gear 102 drives the valve shaft 6 to rotate; when the motor 7 drives the valve shaft 6 to work, the telescopic rod of the air cylinder 503 can move in the cylinder body due to the controller controlling the air supply of one of the air pipes of the air cylinder 503, so as not to hinder the movement of the valve shaft 6.

[0038] In some embodiments, the air cylinder driving module 5 comprises a connecting ring 501, a connecting rod 502 and an air cylinder 503; the air cylinder 503 is rotatably arranged on the regulating valve body 4; the telescopic rod end of the air cylinder 503 is fixedly provided with the connecting ring 501; one end of the connecting ring 501 is rotatably connected to one end of the connecting rod 502; and the other end of the connecting rod 502 is fixedly connected to the valve shaft 6.

[0039] Specifically, the telescopic rod of the air cylinder 503 can drive the connecting ring 501 to move, the connecting ring 501 drives the connecting rod 502 to move, and the connecting rod 502 drives the valve shaft 6 to rotate; since the valve shaft 6 is connected to the motor 7 through the shaft coupling, when the valve shaft 6 is driven to rotate by the air cylinder 503, the motor 7 does not hinder the rotation of the valve shaft 6.

[0040] The photoelectric encoder 2 comprises a code disc 201 and a photoelectric detector 202 fixed on the regulating valve body 4, and the code disc 201 is fixed on the lower part of the valve shaft 6.

[0041] Specifically, the photoelectric encoder 2 mainly comprises a light source, the code disc 201 and the photoelectric detector 202. The code disc 201 is installed on the shaft, and the code disc 201 has light-transmitting and non-light-transmitting areas. When the valve shaft 6 rotates, the photoelectric detector 202 receives different light signal combinations, which are converted into digital pulse signals by a conversion circuit and transmitted to the controller.

[0042] The code disc 201 and the photoelectric detector 202 are correspondingly arranged.

[0043] The regulating valve body 4 is provided with regulating valve mounting discs 401 at both ends thereof. The regulating valve body 4 is installed.

[0044] The working principle of the utility model is as follows:

[0045] During normal operation of the heating furnace, the operator can select the motor 7 driving or the air cylinder 503 driving mode to adjust the valve shaft 6 according to the actual working condition and process requirement of the heating furnace through the control interface on the terminal (computer or mobile phone), so as to realize the opening and closing control of the valve and adjust the temperature, pressure, flow and other parameters in the heating furnace. The photoelectric encoder 2 monitors the rotating state of the valve shaft 6 in real time and transmits data to the controller. The controller judges whether the valve shaft 6 works normally according to the signal fed back by the photoelectric encoder 2. If the motor 7 or the air cylinder 503 fails, the photoelectric encoder 2 immediately sends a fault signal to the controller. The controller rapidly switches to the standby driving mode and simultaneously sends an alarm signal to the terminal (computer or mobile phone) to inform the operator to handle the fault in time.

[0046] The above is only a preferred embodiment of the utility model, and does not limit the utility model. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heating furnace regulating valve positioner comprising a regulating valve body (4) on which a valve shaft (6) is mounted, characterized in that, Also include: Gear module (1) connected to the valve shaft (6), for driving the valve shaft (6) adjustment; Cylinder drive module (5) connected to the valve shaft (6), for driving the valve shaft (6) adjustment; Photoelectric encoder (2) connected to the valve shaft (6), for detecting the working state of the valve shaft (6); Motor (7) is installed on the regulating valve body (4), the output shaft of the motor (7) is connected with the gear module (1), for driving the gear module (1) work; Controller, electrically connected with the motor (7) and cylinder drive module (5) cylinder (503), for controlling the motor (7) and cylinder (503) work, the controller and the photoelectric encoder (2) data transmission.

2. A furnace control valve positioner according to claim 1 wherein, The gear module (1) includes a large gear (101) and a pinion (102), the center axis of the large gear (101) is fixedly connected with the output end of the coupling of the motor (7), the large gear (101) engages the pinion (102), the center of the pinion (102) is fixedly connected with the upper end of the valve shaft (6).

3. A furnace control valve positioner according to claim 1 wherein, The cylinder drive module (5) includes a connecting ring (501), a connecting rod (502) and a cylinder (503), the cylinder (503) is rotatably arranged on the regulating valve body (4), the telescopic rod end of the cylinder (503) is fixedly provided with the connecting ring (501), the connecting ring (501) is rotatably connected with one end of the connecting rod (502), the other end of the connecting rod (502) is fixedly connected with the valve shaft (6).

4. A furnace control valve positioner according to claim 1 wherein, The photoelectric encoder (2) includes a code disc (201) and a photoelectric detector (202), the photoelectric detector (202) is fixed on the regulating valve body (4), the code disc (201) is fixed on the lower part of the valve shaft (6).

5. A furnace control valve positioner according to claim 4 wherein, The code disc (201) and the photoelectric detector (202) are correspondingly arranged.

6. A furnace control valve positioner according to claim 1 wherein, Both ends of the regulating valve body (4) are respectively provided with regulating valve mounting disc (401).

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