阅读说明：本技术 一种燃烧式光纤预制棒拉伸设备及其控制方法 (Combustion type optical fiber preform stretching equipment and control method thereof ) 是由 叶子文 程康 喻煌 郭君 于 2019-10-24 设计创作，主要内容包括：本发明公开了一种燃烧式光纤预制棒拉伸设备及其控制方法,属于光纤预制棒生产设备技术领域。包括塔架主体,塔架主体包括：塔架、上夹盘装置、下夹盘装置及环形喷灯,环形喷灯通过喷灯升降装置安装在塔架正面的一对竖直导轨的中间部位,环形喷灯的旁侧设有点火器；点火柜,点火柜内设有与环形喷灯连接的氢气供气管道和氧气供气管道,氢气供气管道上设有氢气流量计和氢气阀门组件,氧气供气管道上设有氧气流量计和氧气阀门组件；控制柜,控制柜内设有PLC控制器和控制面板,控制面板与PLC控制器通信连接。本发明的设备自动化程度高、稳定性好,适用于规模化生产,且市面PLC控制器存量较多,购买比较方便,利于后期设备维护、产品的升级。(The invention discloses combustion type optical fiber perform stretching equipment and a control method thereof, and belongs to the technical field of optical fiber perform production equipment. Comprises a tower main body, the tower main body comprises: the annular blowtorch is arranged at the middle part of a pair of vertical guide rails on the front surface of the tower through a blowtorch lifting device, and an igniter is arranged beside the annular blowtorch; the ignition cabinet is internally provided with a hydrogen gas supply pipeline and an oxygen gas supply pipeline which are connected with the annular blowtorch, the hydrogen gas supply pipeline is provided with a hydrogen flow meter and a hydrogen valve assembly, and the oxygen gas supply pipeline is provided with an oxygen flow meter and an oxygen valve assembly; the control cabinet is internally provided with a PLC controller and a control panel, and the control panel is in communication connection with the PLC controller. The equipment provided by the invention has the advantages of high automation degree, good stability and suitability for large-scale production, and the PLC controllers in the market have more stock and are convenient to purchase, so that the later-stage equipment maintenance and product upgrading are facilitated.)

1. A combustion type optical fiber preform drawing apparatus, comprising:

a tower body, the tower body comprising: the device comprises a tower frame (4), an upper chuck device (15), a lower chuck device (25) and an annular blast burner (21), wherein the upper chuck device (15) is installed at the upper ends of a pair of vertical guide rails on the front surface of the tower frame (4) through an upper chuck lifting device, the lower chuck device (25) is installed at the lower ends of the pair of vertical guide rails on the front surface of the tower frame (4) through a lower chuck carrying platform, the upper chuck lifting device is used for controlling the stretching movement of an optical fiber preform rod (17), the annular blast burner (21) is installed at the middle part of the pair of vertical guide rails on the front surface of the tower frame (4) through a blast burner lifting device, an igniter (20) is arranged beside the annular blast burner (21), and the igniter (20) is used;

the ignition cabinet, be equipped with hydrogen gas supply line (8) and oxygen gas supply line (9) of being connected with annular blowtorch (21) in the ignition cabinet, be equipped with hydrogen flowmeter and hydrogen valve subassembly on hydrogen gas supply line (8), be equipped with oxygen flowmeter and oxygen valve subassembly on oxygen gas supply line (9).

2. A combustion type optical fiber preform drawing apparatus as claimed in claim 1, wherein:

the annular blast burner (21) is of a circular ring structure, the outer wall of the annular blast burner (21) is provided with a hydrogen gas inlet (211) and an oxygen gas inlet (212), the inner wall of the annular blast burner (21) is provided with a plurality of flame holes (214), the flame holes (214) are annularly and uniformly distributed along the inner wall of the annular blast burner (21), a closed gas mixing chamber (215) is arranged between the outer wall and the inner wall of the annular blast burner (21), the gas mixing chamber (215) is respectively communicated with the hydrogen gas inlet (211), the oxygen gas inlet (212) and the flame holes (214), the hydrogen gas supply pipeline (8) is communicated with the hydrogen gas inlet (211), and the oxygen gas supply pipeline (9) is communicated with the oxygen gas inlet (212);

be equipped with hydrogen spark arrester (22) between hydrogen air inlet (211) and hydrogen gas supply pipeline (8) of annular blowtorch (21), be equipped with oxygen spark arrester (23) between oxygen air inlet (212) and the oxygen gas supply pipeline (9) of annular blowtorch (21).

3. A combustion type optical fiber preform drawing apparatus as claimed in claim 2, wherein:

still be equipped with technology cooling water system in the ignition cabinet, be equipped with filter and hand valve on technology cooling water system's cooling water pipeline (10), the outer wall of annular blowtorch (21) still is equipped with water inlet (213) and delivery port, is equipped with liquid cooling cavity (216) between the outer wall of annular blowtorch (21) and the inner wall, water inlet (213) and delivery port and liquid cooling cavity (216) intercommunication, water inlet (213) and technology cooling water system's cooling water pipeline (10) intercommunication, delivery port and technology cooling water system's inlet channel intercommunication.

4. A combustion type optical fiber preform drawing apparatus as claimed in claim 1, wherein:

still include the switch board, be equipped with PLC controller and control panel in the switch board, control panel and PLC controller communication connection, the output of PLC controller is connected with last (holding) chuck elevating gear, blowtorch elevating gear, some firearm (22), hydrogen flowmeter, oxygen flowmeter, hydrogen valve member and oxygen valve subassembly respectively, PLC controller control go up (holding) chuck elevating gear and blowtorch elevating gear elevating movement, PLC controller control annular blowtorch (21) are lighted in some firearm (22), the flow of PLC controller control hydrogen flowmeter and oxygen flowmeter, the aperture of PLC controller control hydrogen valve member and oxygen valve member.

5. A combustion type optical fiber preform drawing apparatus as claimed in claim 1, wherein:

the upper chuck plate lifting device comprises an upper chuck plate carrying platform, a first motor (2) and a first lead screw, the upper chuck plate device (15) is installed at the bottom of the upper chuck plate carrying platform, the upper chuck plate carrying platform is in sliding connection with a guide rail, the first motor (2) is installed on the tower (4), the first lead screw is rotatably connected to the tower (4) and parallel to the guide rail, first synchronizing wheels are arranged on the first lead screw and the first motor (2), the first lead screw and the synchronizing wheels of the first motor (2) are in transmission connection through a first synchronizing belt, a first lead screw nut connected with the upper chuck plate carrying platform is arranged on the first lead screw, the first motor (2) drives the upper chuck plate carrying platform to move up and down through forward and reverse rotation, a limiting rod (12) is arranged at the top of the upper chuck plate carrying platform, an upper limiting switch (14) is arranged at the top of the tower (4), the bottom of the upper chuck carrying platform is provided with a blowtorch limit switch (13), and the top of the lower chuck carrying platform is provided with a lower limit switch (26).

6. A combustion type optical fiber preform drawing apparatus as claimed in claim 1, wherein:

be equipped with third motor (6) and integral key shaft on pylon (4), third motor (6) are installed on pylon (4), and the integral key shaft rotates to be connected on pylon (4), and the integral key shaft passes through the gear to be connected with last (holding) chuck device (15) and lower (holding) chuck device (25) meshing respectively, and the rotor output shaft and the integral key shaft fixed connection of third motor (6), third motor (6) are through integral key shaft drive (holding) chuck device (15) and lower (holding) chuck device (25) synchronous revolution, the top of pylon (4) is equipped with exhaust hood (1).

7. A combustion type optical fiber preform drawing apparatus as claimed in claim 1, wherein:

the blowtorch lifting device comprises a blowtorch carrier, a second motor (7) and a second screw rod, the annular blowtorch (21) is arranged on the blowtorch carrier, the blowtorch carrier is connected with the guide rail in a sliding way, the second motor (7) is arranged on the tower (4), the second lead screw is rotationally connected on the tower (4), and the second screw rod is parallel to the guide rail, the second screw rod and the second motor are both provided with a second synchronous wheel, the second screw rod is connected with a synchronous wheel of a second motor through a second synchronous belt in a transmission way, a second screw rod nut connected with the blowtorch carrier is arranged on the second screw rod, the second motor drives the blowtorch carrying platform to move up and down through forward and reverse rotation, a clutch (3) is arranged at the end part of the second lead screw, the clutch (3) is fixedly connected with the tower (4), and the clutch (3) is used for controlling the second lead screw and preventing the second lead screw from rotating.

8. A combustion type optical fiber preform drawing apparatus as claimed in claim 7, wherein:

the torch carrying table is provided with a rod diameter measuring instrument (18) and a flame sensor (19), the rod diameter measuring instrument (18) is used for measuring the diameter of an optical fiber preform (17) arranged between the upper chuck device (15) and the lower chuck device (25) in real time, and the flame sensor (19) is used for detecting the combustion state of the annular torch (21).

9. A combustion type optical fiber preform drawing apparatus as claimed in claim 7, wherein:

the blowtorch carrying platform is characterized in that a blowtorch limiting rod (24) is arranged on the blowtorch carrying platform, the blowtorch limiting rod (24) is used for controlling the lifting range of the annular blowtorch (21), a blowtorch air draft cover (16) is arranged above the blowtorch carrying platform, the blowtorch air draft cover (16) and the blowtorch carrying platform are arranged at intervals, the blowtorch air draft cover (16) moves along with the blowtorch carrying platform, a balancing weight (5) is arranged on the blowtorch carrying platform, and the balancing weight (5) pulls the blowtorch carrying platform to move up and down through a pulling rope and a fixed pulley (11).

10. A method of controlling a combustion type optical fiber preform drawing apparatus according to any one of claims 1 to 9, comprising the steps of:

after the equipment is powered on, the control cabinet carries out self-checking on the running state of the equipment, when various states of the equipment are safe, the control panel enters an administrator login interface, and if the equipment is in an abnormal state, the control panel stops starting and is in a repair reporting mode;

after the control panel logs in the system with the identity of an administrator, starting a control function of a manual operation box, enabling an optical fiber perform rod (17) to be stretched to pass through an annular blast burner (21), fixing the optical fiber perform rod (17) by adopting an upper chuck device (15) and a lower chuck device (25), closing the control function of the manual operation box, starting a third motor (6) to drive the upper chuck device (15) and the lower chuck device (25) to synchronously rotate, and waiting for ignition;

when the optical fiber perform (17) is confirmed to be installed abnormally, ignition operation is carried out through a control panel, after a hydrogen control button is clicked, a hydrogen valve component is opened, a hydrogen flow meter is automatically set to be 20L/min, an igniter (20) extends out and ignites an annular blowtorch (21), when a flame sensor (19) detects that the annular blowtorch (21) is ignited, an oxygen control button of the control panel is activated, after the oxygen control button is clicked, an oxygen valve component is opened, the oxygen flow meter is automatically set to be 10L/min, and oxygen enters the annular blowtorch to be mixed with the hydrogen for combustion;

the PLC controls the upper chuck lifting device and the blast burner lifting device to move up and down on the tower (4) according to a set program to stretch and heat the optical fiber perform (17) until the product is finished.

Technical Field

The invention relates to the technical field of optical fiber perform production equipment, in particular to combustion type optical fiber perform stretching equipment and a control method thereof.

Background

Currently, along with the development of 5G communication technology, the optical fiber manufacturing technology is also continuously improved to meet the increasing demand of transmission capacity, and compared with some classical transmission modes such as wireless transmission communication and electric transmission communication, the optical transmission communication has good advantages in large capacity, high speed and long-distance communication transmission, and has a very wide application prospect. Therefore, in the optical fiber preform processing or treatment link, higher requirements are put forward on the equipment performance and the processing precision.

The induction type stretching equipment adopts a high-frequency induction furnace as a heating component, has large volume and complex structure, is difficult to observe the change of rod diameter when stretching the optical fiber preform rod, and is difficult to perform manual intervention when encountering abnormal conditions. When the furnace body breaks down and is stopped for maintenance, a large number of parts need to be dismantled, which is time-consuming and labor-consuming.

An industrial personal computer is used as stretching equipment of the controller, an industrial board card is mainly used for collecting data and controlling external hardware, the development technology difficulty is high, and the interface is monotonous and not visual; when equipment fails, maintenance and inspection are inconvenient. After the board card is replaced, the board card can be normally used only by installing and configuring a drive, and is very tedious.

Disclosure of Invention

The invention aims to overcome the defects of large volume and complex structure of a high-frequency induction furnace of an induction type stretching device in the background technology, and provides a combustion type optical fiber preform stretching device and a control method thereof.

The invention provides a combustion type optical fiber preform stretching device, which comprises:

a tower body, the tower body comprising: the device comprises a tower frame, an upper chuck plate device, a lower chuck plate device and an annular blast burner, wherein the upper chuck plate device is arranged at the upper ends of a pair of vertical guide rails on the front surface of the tower frame through an upper chuck plate lifting device;

the ignition cabinet, be equipped with the hydrogen gas supply line and the oxygen gas supply line of being connected with annular blowtorch in the ignition cabinet, be equipped with hydrogen flowmeter and hydrogen valve subassembly on the hydrogen gas supply line, be equipped with oxygen flowmeter and oxygen valve subassembly on the oxygen gas supply line.

The preferred scheme is as follows: the annular blowtorch is of an annular structure, a hydrogen gas inlet and an oxygen gas inlet are formed in the outer wall of the annular blowtorch, a plurality of flame holes are formed in the inner wall of the annular blowtorch and are annularly and uniformly distributed along the inner wall of the annular blowtorch, a closed gas mixing cavity is arranged between the outer wall and the inner wall of the annular blowtorch and is respectively communicated with the hydrogen gas inlet, the oxygen gas inlet and the flame holes, a hydrogen gas supply pipeline is communicated with the hydrogen gas inlet, and an oxygen gas supply pipeline is communicated with the oxygen gas inlet;

a hydrogen flame arrester is arranged between a hydrogen inlet of the annular blast lamp and a hydrogen gas supply pipeline, and an oxygen flame arrester is arranged between an oxygen inlet of the annular blast lamp and the oxygen gas supply pipeline.

The preferred scheme is as follows: still be equipped with technology cooling water system in the ignition cabinet, be equipped with filter and hand valve on technology cooling water system's the cooling water piping, the outer wall of annular blowtorch still is equipped with water inlet and delivery port, is equipped with liquid cooling cavity between the outer wall of annular blowtorch and the inner wall, water inlet and delivery port and liquid cooling cavity intercommunication, the water inlet communicates with technology cooling water system's cooling water piping, the delivery port communicates with technology cooling water system's inlet channel.

The preferred scheme is as follows: still include the switch board, be equipped with PLC controller and control panel in the switch board, control panel and PLC controller communication connection, the output of PLC controller is connected with last (holding) chuck elevating gear, blowtorch elevating gear, some firearm, hydrogen flowmeter, oxygen flowmeter, hydrogen valve member and oxygen valve subassembly respectively, PLC controller control goes up (holding) chuck elevating gear and blowtorch elevating gear elevating movement, PLC controller control the annular blowtorch is lighted to some firearm, PLC controller control hydrogen flowmeter and oxygen flowmeter's flow, PLC controller control hydrogen valve member and oxygen valve member's aperture.

The preferred scheme is as follows: the upper chuck plate lifting device comprises an upper chuck plate carrying platform, a first motor and a first lead screw, the upper chuck plate device is arranged at the bottom of the upper chuck plate carrying platform, the upper chuck plate carrying platform is connected with the guide rail in a sliding manner, the first motor is arranged on the tower frame, the first lead screw is rotationally connected to the tower frame, the first lead screw is parallel to the guide rail, the first lead screw and the first motor are both provided with a first synchronous wheel, the first screw rod is in transmission connection with a synchronizing wheel of a first motor through a first synchronous belt, a first screw rod nut connected with the upper chuck plate carrying platform is arranged on the first screw rod, the first motor drives the upper clamping plate carrying platform to move up and down through forward and reverse rotation, a limiting rod is arranged at the top of the upper clamping plate carrying platform, the top of the tower is provided with an upper limit switch, the bottom of the upper chuck carrying platform is provided with a blowtorch limit switch, and the top of the lower chuck carrying platform is provided with a lower limit switch.

The preferred scheme is as follows: the tower is provided with a third motor and a spline shaft, the third motor is installed on the tower, the spline shaft is rotatably connected onto the tower and is respectively meshed with the upper chuck plate device and the lower chuck plate device through gears, a rotor output shaft of the third motor is fixedly connected with the spline shaft, the third motor drives the upper chuck plate device and the lower chuck plate device to synchronously rotate through the spline shaft, and the top of the tower is provided with an exhaust hood.

The preferred scheme is as follows: the blowtorch lifting device comprises a blowtorch carrying platform, a second motor and a second lead screw, the annular blowtorch is arranged on the blowtorch carrying platform, the blowtorch carrying platform is in sliding connection with the guide rail, the second motor is arranged on the tower, the second lead screw is rotatably connected to the tower and parallel to the guide rail, second synchronizing wheels are arranged on the second lead screw and the second motor, the synchronizing wheels of the second lead screw and the second motor are in transmission connection through a second synchronizing belt, a second lead screw nut connected with the blowtorch carrying platform is arranged on the second lead screw, the second motor drives the blowtorch carrying platform to move up and down through forward and reverse rotation, a clutch is arranged at the end of the second lead screw, the clutch is fixedly connected with the tower, and the clutch is used for controlling the second lead screw and preventing the second lead screw from rotating.

The preferred scheme is as follows: the torch carrying platform is provided with a rod diameter measuring instrument and a flame sensor, the rod diameter measuring instrument is used for measuring the diameter of an optical fiber preform arranged between the upper chuck device and the lower chuck device in real time, and the flame sensor is used for detecting the combustion state of the annular torch.

The preferred scheme is as follows: the blowtorch limiting rod is arranged on the blowtorch carrying platform and used for controlling the lifting range of the annular blowtorch, a blowtorch air hood is arranged above the blowtorch carrying platform and arranged at an interval with the blowtorch carrying platform, the blowtorch air hood moves up and down along with the blowtorch carrying platform, a balancing weight is arranged on the blowtorch carrying platform, and the balancing weight pulls the blowtorch carrying platform to move up and down through a pulling rope and a fixed pulley.

The invention also provides a control method of the combustion type optical fiber preform stretching equipment, which comprises the following steps:

after the equipment is powered on, the control cabinet carries out self-checking on the running state of the equipment, when various states of the equipment are safe, the control panel enters an administrator login interface, and if the equipment is in an abnormal state, the control panel stops starting and is in a repair reporting mode;

after the control panel logs in the system by using the identity of an administrator, starting a control function of a manual operation box, enabling an optical fiber preform rod to be stretched to pass through an annular blast burner, fixing the optical fiber preform rod by adopting an upper chuck device and a lower chuck device, closing the control function of the manual operation box, starting a third motor to drive the upper chuck device and the lower chuck device to synchronously rotate, and waiting for ignition;

when the optical fiber perform is confirmed to be installed abnormally, ignition operation is carried out through a control panel, after a hydrogen control button is clicked, a hydrogen valve assembly is opened, a hydrogen flow meter is automatically set to be 20L/min, an igniter extends out and ignites an annular blowtorch, when a flame sensor detects that the annular blowtorch is ignited, an oxygen control button of the control panel is activated, after the oxygen control button is clicked, an oxygen valve assembly is opened, the oxygen flow meter is automatically set to be 10L/min, and oxygen enters the annular blowtorch to be mixed with hydrogen for combustion;

and the PLC controls the upper chuck lifting device and the blast burner lifting device to move up and down on the tower frame according to a set program so as to stretch and heat the optical fiber preform rod until the product is finished.

On the basis of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the combustion type optical fiber preform stretching equipment and the control method thereof, 1, the combustion type optical fiber preform stretching equipment adopts the PLC which is widely applied at present as the main controller, the equipment is high in automation degree and good in stability, is suitable for large-scale production, has more PLC controllers on the market, is convenient to purchase, and is beneficial to later-stage equipment maintenance and product upgrading. 2. This burning formula optical fiber perform tensile equipment adopts control panel to control this burning formula optical fiber perform tensile equipment automated production, has realized the integrated control of optical fiber perform processing or processing, makes operator's operating time reduce 1/3, the effectual operating efficiency who improves operating personnel. 3. This tensile equipment of burning formula optical fiber perform has adopted annular blowtorch as optical fiber perform's heating device, and this annular blowtorch adopts hydrogen burning, the combustion-supporting optical fiber perform that heats of oxygen, and this annular blowtorch has small, non-maintaining, low in manufacturing cost, long service life's advantage.

Drawings

FIG. 1 is a schematic structural view of a tower body of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a ring torch according to an embodiment of the present invention;

fig. 3 is a structural sectional view of an annular torch according to an embodiment of the present invention;

fig. 4 is a flow chart of a method of an embodiment of the present invention.

Reference numerals: 1-an exhaust hood, 2-a first motor, 3-a clutch, 4-a tower, 5-a counterweight, 6-a third motor, 7-a second motor, 8-a hydrogen gas supply pipeline, 9-an oxygen gas supply pipeline, 10-a cooling water pipeline, 11-a fixed pulley, 12-a limiting rod, 13-a torch limiting switch, 14-an upper limiting switch, 15-an upper chuck device, 16-a torch exhaust hood, 17-an optical fiber preform, 18-a rod diameter measuring instrument, 19-a flame sensor, 20-an igniter, 21-a ring torch, 22-a hydrogen flame arrester, 23-an oxygen flame arrester, 24-a torch limiting rod, 25-a lower chuck device, 26-a lower limiting switch, 211-a hydrogen gas inlet, 212-an oxygen gas inlet, 213-water inlet, 214-flame hole, 215-gas mixing chamber, 216-liquid cooling chamber.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.