CN110986088B

CN110986088B - Automatic ignition system and method for synthesis furnace

Info

Publication number: CN110986088B
Application number: CN201911343393.5A
Authority: CN
Inventors: 鞠毅; 于文杰
Original assignee: Jiangsu Yimai Technology Co ltd
Current assignee: Jiangsu Yimai Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2021-05-11
Anticipated expiration: 2039-12-24
Also published as: CN110986088A

Abstract

The invention discloses an automatic ignition system and a method for a synthetic furnace, the system comprises the synthetic furnace, an ignition device and at least one flame monitoring device, the ignition device comprises an ignition control box, a gas control cabinet, an ignition gun, a first cable, a hydrogen conveying pipe and an air conveying pipe, the flame monitoring device comprises an electric control box, a flame detector and a second cable, the wall of the synthetic furnace is provided with an ignition device fixing frame and a flame monitoring device fixing frame, the ignition gun and the flame detector are respectively fixed on the ignition device fixing frame and the flame monitoring device fixing frame, the method comprises the steps of installing the ignition gun, the ignition control box and the gas control cabinet, connecting the gas control cabinet and the ignition gun, the ignition gun and the ignition control box, installing and connecting the electric control box and the flame detector, connecting air, connecting hydrogen, electrifying and igniting, monitoring temperature and flame, the ignition control system has the advantages of simplicity, few faults, high ignition success rate, automatic control and the like, is safe and reliable, and has the service life of more than 15 years.

Description

Automatic ignition system and method for synthesis furnace

Technical Field

The invention belongs to the field of ignition equipment of synthesis furnaces, and particularly relates to an automatic ignition system and method of a synthesis furnace.

Background

The hydrogen is required to be ignited firstly and then to react with chlorine when synthesizing the hydrogen chloride, because the hydrogen is required to be ignited firstly in the synthesizing furnace, the working condition is complex, the manual operation is inconvenient, the ignition success rate is low, and simultaneously, the potential safety hazard is great, an automatic ignition gun is also adopted for ignition at present, for example, a patent with the patent number of 201410516503.4, an automatic ignition system of the hydrogen chloride synthesizing furnace and a control method thereof are disclosed, the automatic ignition system comprises an ignition gun and a flame monitor which are arranged at the side edge of a furnace mouth of the hydrogen chloride synthesizing furnace, and a chlorine gas inlet pipeline, a hydrogen gas inlet pipeline and a nitrogen pipeline which are connected in series at the bottom of the furnace mouth of the hydrogen chloride synthesizing furnace, the structure ensures that the nitrogen is required to be used for blowing before starting the ignition gun to fire, and the nitrogen is required to be blown for a plurality of times to avoid the corrosion of electrodes and the like, thus, the purity, the operation process is more complex, air is introduced when the ignition gun is started, the whole furnace body is filled with air, hydrogen is introduced for ignition, flame detection is repeatedly carried out, a temperature monitoring method is adopted for flame detection, whether ignition is successful or not can not be visually displayed, the possibility of leakage of dangerous gas is high, and certain potential safety hazards are generated.

Disclosure of Invention

In order to solve the problems, the invention aims to provide an automatic ignition system and method of a synthesis furnace, which are simple and fast to install and operate, safe to use and high in purity of synthesized products.

In order to achieve the purpose, the technical scheme of the invention is as follows:

an automatic ignition system of a synthesis furnace comprises the synthesis furnace, an ignition device and at least one flame monitoring device, wherein the ignition device comprises an ignition control box, a gas control cabinet, an ignition gun, a hydrogen conveying pipe and an air conveying pipe, and a first cable is connected between the ignition control box and the ignition gun;

the ignition control box comprises an ignition control box body, a wiring seat arranged at the lower part in the ignition control box body, a high-pressure ignition bag positioned on one side of the wiring seat and fixed on the ignition control box body, a temperature transmitter arranged above the wiring seat and fixed on the ignition control box body, and a two-position three-way electromagnetic valve and a normally closed electromagnetic valve which are arranged on two sides above the temperature transmitter and fixed on the ignition control box body, wherein the lower end of the wiring seat is connected with an external high-voltage power supply, the upper end of the wiring seat is respectively connected with the high-pressure ignition bag, the temperature transmitter, the two-position three-way electromagnetic valve and the normally closed electromagnetic valve through leads, and the two-position three-way electromagnetic valve and the normally closed electromagnetic valve are connected;

the gas control cabinet is positioned outside the ignition control box, the gas control cabinet and the ignition control box are relatively fixed, the gas control cabinet is provided with a panel, the panel is in an inverted L shape, a hydrogen conveying system and an air conveying system are arranged in the gas control cabinet, the hydrogen conveying system comprises a hydrogen input interface and a hydrogen output interface which are arranged on one side of the upside of the inverted L-shaped panel, a hydrogen ball valve, a hydrogen pressure reducing valve, a hydrogen one-way valve, a hydrogen flame arrester, a hydrogen flowmeter, a pneumatic valve and a pneumatic valve control gas pipe which are sequentially fixed on one side of the inverted L-shaped panel facing the inside of the gas control cabinet, and the pneumatic valve control gas pipe is connected with the pneumatic valve and the outlet of the two-position three-way solenoid valve, and hydrogen pipelines are sequentially connected among the hydrogen input interface, the hydrogen ball valve, the hydrogen pressure reducing valve, the outlet of the pneumatic valve is connected with the hydrogen output interface, the hydrogen pressure reducing valve is provided with a hydrogen pressure gauge, the air conveying system comprises an air input interface and an air output interface which are arranged on the other side of the upper edge of the inverted L-shaped panel, and an air ball valve, an air pressure reducing valve, an air one-way valve and an air flow meter which are sequentially fixed on the other side of one side of the inverted L-shaped panel facing the inside of the gas control cabinet, air pipelines are respectively connected between the air input interface and the air ball valve and between the air reducing valve and the air one-way valve and between the air flow meter and the air output interface in sequence, an air pressure gauge is arranged on the air pressure reducing valve, an outlet of the air pressure reducing valve is connected with an inlet of the three-way joint through an air pipeline, inlets of the two-position three-way electromagnetic valve and the normally closed electromagnetic valve are respectively connected with two outlets of the three-way joint, and an outlet of the normally closed electromagnetic valve is connected with an inlet of the air one-way valve through an air pipeline; the flame monitoring device comprises an electric cabinet and a flame detector, a second cable is connected between the electric cabinet and the flame detector, an ignition device fixing frame and a flame monitoring device fixing frame are fixedly arranged on the wall of the synthetic furnace, the ignition gun and the flame detector are respectively and fixedly arranged on the ignition device fixing frame and the flame monitoring device fixing frame in a sealing manner, and the front ends of the ignition gun and the flame detector respectively extend into the synthetic furnace;

the ignition gun comprises a gun head fixing seat, the gun head fixing seat is fixed on an ignition device fixing frame in a sealing manner, the gun head fixing seat is provided with a hydrogen channel and an air channel, a hydrogen channel inlet and an air channel inlet are arranged on the outer side surface, close to the front end, of the gun head fixing seat, the hydrogen channel inlet is connected with a hydrogen output interface through a hydrogen conveying pipe, the air channel inlet is connected with the air output interface through an air conveying pipe, a hydrogen channel outlet and an air channel outlet are arranged on the front end surface of the gun head fixing seat, the hydrogen channel outlet is communicated with an ignition hydrogen pipe along the outlet direction, the front end of the ignition hydrogen pipe extends into a synthesis furnace, two electrode through holes and a temperature probe through hole are arranged in the gun head fixing seat along the length direction, the two electrode through holes are positioned below the hydrogen channel, and the, the rear end of the gun head fixing seat is provided with two cable binding posts and a temperature probe binding post, two electrode through holes are respectively inserted with an electrode protection tube, one end of each electrode protection tube is inserted in the front end of the electrode through hole, the other end of each electrode protection tube extends out of the front end face of the gun head fixing seat and extends into the synthetic furnace, an electrode is inserted in each electrode protection tube, one end of each electrode is connected with one cable binding post, the other end of each electrode extends out of the other end port of the electrode protection tube and extends into the synthetic furnace, the end of the other end of each electrode in the synthetic furnace is sleeved with a graphite head, the electrode protection tube, the electrode and the electrode through hole are sealed and relatively fixed, the temperature probe is sealed and fixed in the temperature probe through hole, one end of the temperature probe is connected, the temperature probe and the electrode are located at the same level of the end of one end in the synthesis furnace and slightly exceed the front end port of the ignition hydrogen tube in the synthesis furnace, the temperature probe wiring terminal is connected with the temperature transmitter through a lead, and the cable wiring terminal is connected with the high-voltage ignition package through a first cable.

Furthermore, the gun head fixing seat is integrally formed by polytetrafluoroethylene materials and is of a stepped cylindrical structure, the front end of the gun head fixing seat is a large cylinder with a cylindrical boss and a smaller diameter, the large cylinder is smaller in length and larger in diameter, the rear end of the gun head fixing seat is a small cylinder with a longer length and a smaller diameter, the gun head fixing seat is fixedly and hermetically kept with an ignition device fixing frame at the junction of the large cylinder and the small cylinder, a hydrogen channel inlet and an air channel inlet are arranged on the outer side surface of the small cylinder close to the large cylinder, a hydrogen channel outlet and an air channel outlet are arranged on the front end surface of the cylindrical boss, the parts of the hydrogen channel and the air channel along the length direction of the gun head fixing seat are parallel to the axial central line of the gun head fixing seat, the hydrogen channel outlet is communicated with an ignition hydrogen pipe along the outlet, a circular groove is arranged in the tail end of a small cylinder at the rear end of the gun head fixing seat, two cable binding posts are arranged at the bottom of the circular groove, a baffle plate is arranged in the circular groove, a temperature probe binding post is arranged on the baffle plate, two electrode through holes and a temperature probe through hole which are parallel to the axial center line are arranged in the gun head fixing seat along the length direction, the two electrode through holes are positioned at the same horizontal position in the gun head fixing seat, an electrode protection pipe is respectively inserted in the two electrode through holes, one end of each electrode protection pipe is inserted in the front end of the electrode through hole positioned in the cylindrical boss, the other end of each electrode protection pipe extends out of the front end face of the cylindrical boss of the gun head fixing seat and extends into the synthetic furnace, an electrode is inserted in each electrode protection pipe, one end of each electrode is connected to one cable binding post, the other, a retainer ring is fixed at the joint of each electrode and one end of an electrode protection tube positioned in the electrode through hole, the electrode protection tube and the electrode are fixed and sealed at the retainer ring, the electrode between the retainer ring and the bottom of the circular groove and the electrode through hole are fixed and sealed, the temperature probe is sealed and fixed in the temperature probe through hole, one end of the temperature probe penetrates out of the bottom of the circular groove and extends out of the retainer plate to be connected with a temperature probe connecting terminal, the other end of the temperature probe extends out of the front end face of the cylindrical boss of the gun head fixing seat and extends into the synthetic furnace, a first cable inlet is arranged on the side wall of the circular groove, a first connector clamp is arranged at the first cable inlet, a first explosion-proof clamp connector is inserted into the first connector, one end of the first cable penetrates through the first explosion-proof connector to be connected with a cable binding post, and the other end of, still be equipped with first explosion-proof pipe between high pressure ignition package and the explosion-proof joint, first cable is worn to locate in the first explosion-proof pipe, circular recess notch is through screw thread fixedly connected with rifle head fixing base stifle.

Further, the ignition hydrogen pipe is a ceramic ignition hydrogen pipe, the electrode protection pipe is a ceramic electrode protection pipe, the electrode is made of tantalum rods, and the two electrode protection pipes and the ignition hydrogen pipe are fixed through fixing clamps.

Further, the flame detector comprises a detection fixing seat, at least one quartz tube and a sensor matched with the quartz tube in number, the detection fixing seat is of a step-shaped cylindrical structure and is integrally formed by polytetrafluoroethylene materials, the front end of the detection fixing seat is a large cylinder with smaller length and larger diameter, the rear end of the detection fixing seat is a small cylinder with longer length and smaller diameter, quartz tube through holes matched with the quartz tube in number are formed in the detection fixing seat along the length direction, each quartz tube through hole is parallel to the axial central line of the detection fixing seat, a sensor placing groove is formed in the tail end of the small cylinder of the detection fixing seat, a second cable inlet is formed in the side wall of the sensor placing groove, a second explosion-proof joint is arranged at the second cable inlet, a detection seat cover is fixedly connected to the notch of the sensor placing groove through threads, and the sensor is arranged in the sensor, the detection fixing seat is fixed on the flame monitoring device fixing frame in a sealing mode, the large cylinder at the front end of the detection fixing seat is arranged in the flame monitoring device fixing frame, the small cylinder at the rear end of the detection fixing seat is arranged outside the flame monitoring device fixing frame, each quartz tube penetrates through each quartz tube through hole in a sealing mode, one end of each quartz tube extends into the synthetic furnace, the other end of each quartz tube is fixedly connected to each sensor, the height of one end, extending into the synthetic furnace, of each quartz tube in the synthetic furnace is the same as or slightly higher than the height of one end, extending into the synthetic furnace, of each temperature probe in the synthetic furnace, and the included angle between the axial central line of each quartz tube and the axial central line of each temperature probe is more.

Further, the electric cabinet comprises an electric cabinet box body, an electric cabinet box cover and current amplifiers matched with the number of the sensors, each current amplifier is fixedly arranged in the electric cabinet box body, second cables matched with the number of the sensors are connected between the electric cabinet and the flame detector, one end of each second cable is connected to each sensor through a second explosion-proof connector, the other end of each second cable is connected to each current amplifier, a second explosion-proof pipe is arranged between each second explosion-proof connector and the electric cabinet, and the second cables penetrate through the second explosion-proof pipes.

Still further, the flame monitoring device is arranged on the wall of the synthesis furnace opposite to the ignition device.

The invention also provides an automatic ignition method of the automatic ignition system of the synthesis furnace, which comprises the following steps:

(1) fixing a gun head fixing seat assembled with an ignition hydrogen tube, an electrode protection tube, an electrode, a graphite head and a temperature probe on a synthetic furnace ignition device fixing frame, enabling the temperature probe to be positioned at the top, enabling the ignition hydrogen tube, the electrode protection tube, the electrode, the graphite head and the temperature probe to extend into the synthetic furnace, and enabling the joint of the ignition device fixing frame and the gun head fixing seat to be kept sealed and fixed;

(2) fixedly installing a fire control box and a gas control cabinet;

(3) connecting a hydrogen conveying system and an air conveying system of a gas control cabinet by a hydrogen pipeline and an air pipeline respectively, connecting a pneumatic valve with an outlet of a two-position three-way electromagnetic valve by a pneumatic valve control air pipe, connecting an outlet of an air pressure reducing valve with an inlet of a three-way joint and an inlet of an air one-way valve with an outlet of a normally closed electromagnetic valve by air pipelines respectively, connecting a wiring seat with a high-pressure ignition bag, a temperature transmitter, the two-position three-way electromagnetic valve and the normally closed electromagnetic valve by leads, connecting a hydrogen output interface with an inlet of a hydrogen channel by the hydrogen conveying pipe, connecting an air output interface with an inlet of the air channel by the air conveying pipe, connecting a cable terminal of an ignition gun with a first cable of the high-pressure ignition bag, connecting a temperature probe terminal with the temperature transmitter by the;

(4) fixedly installing an electric cabinet;

(5) installing a flame detector on a flame monitoring device fixing frame, enabling a quartz tube to extend into a synthetic furnace, enabling the end of the quartz tube in the synthetic furnace to be at the same horizontal position or slightly higher than the end of a temperature probe, enabling the included angle between the axial central line of the quartz tube and the axial central line of the temperature probe to be larger than 90 degrees, keeping the fixing and sealing at the joint of a detection fixing seat and the flame monitoring device fixing frame, and enabling the distance between an electric cabinet and the flame detector to be not more than 10 meters;

(6) connecting a sensor of the flame detector with a current amplifier in the electric cabinet by using a second cable;

(7) before ignition, whether the power grounding is good or not is checked, the power voltage is 220V/50HZ, a wire holder in an ignition control box is externally connected with a power supply, and a current amplifier of an electric cabinet is externally connected with the power supply;

(8) respectively connecting the two-position three-way electromagnetic valve and the normally closed electromagnetic valve into DC24V from a wire holder;

(9) the air is connected, the gas control cabinet is connected with compressed air through an air input interface, the normally closed electromagnetic valve is opened after being electrified, the compressed air flows through an air ball valve, an air pressure reducing valve, the normally closed electromagnetic valve, an air one-way valve, an air flow meter and an air output interface, the air flow meter is adjusted after the air pressure of the air pressure reducing valve is reduced, the pressure of the air pressure reducing valve is adjusted to 0.5MPa, the air flow meter is adjusted to 10L/min, then the compressed air is connected into an ignition gun through an air channel inlet of the ignition gun through the air output interface by an air conveying pipe with 10mmPFA, and enters a fixing frame of the ignition device;

(10) and after air is introduced for 60 seconds, hydrogen is introduced, specifically: one part of compressed air enters a two-position three-way electromagnetic valve through a three-way joint and then enters a pneumatic valve, the pneumatic valve is opened under the action of the compressed air at the moment, hydrogen is introduced into a gas control cabinet through a hydrogen input interface, the hydrogen sequentially flows through a hydrogen ball valve, a hydrogen pressure reducing valve, a hydrogen one-way valve, a hydrogen flame arrester, a hydrogen flowmeter, a pneumatic valve and a hydrogen output interface, the hydrogen flowmeter is adjusted after the hydrogen pressure is reduced through the hydrogen pressure reducing valve, the pressure of the hydrogen pressure reducing valve is adjusted to 0.2MPa, the hydrogen flowmeter is adjusted to 5L/min, then the hydrogen is introduced into an ignition gun through a hydrogen channel inlet of the ignition gun by a hydrogen conveying pipe with 6mm PFA through a hydrogen output interface, and then the hydrogen is sent into;

(11) when hydrogen is introduced, a high-voltage ignition package in the ignition control box is connected to AC220V, and the ignition is realized by electrifying;

(12) the temperature probe transmits a temperature signal to the temperature transmitter through a wire to monitor the ignition condition in real time, the flame detector works to monitor the flame in the synthetic furnace, when the successful ignition in the synthetic furnace is monitored, the ignition is stopped, the hydrogen conveying system and the air conveying system are closed, the flame monitoring device continues to work, and the flame in the synthetic furnace is continuously monitored.

Compared with the prior art, the invention has the following beneficial effects:

(1) the hydrogen conveying system and the air conveying system of the gas control cabinet of the ignition device are controlled by a two-position three-way electromagnetic valve and a normally closed electromagnetic valve respectively, the hydrogen conveying system and the air conveying system are provided with a one-way valve, a pressure reducing valve and a flowmeter, the gas flow and the volume can be accurately controlled, the ignition device adopts an AC 220V-to-2X 7kV high-pressure ignition bag, and the ignition device has the advantages of simplicity, compactness, few faults, large spark amount, high ignition speed, high efficiency and the like, the safety and the reliability of the system are improved, and the service life can reach more than 15 years.

(2) The ceramic electrode protection tube, the ceramic ignition hydrogen tube and the quartz tube have good corrosion resistance and temperature resistance, safety is improved, service life is prolonged, and meanwhile, compared with a quartz rod, the quartz tube has better non-attenuation and corrosion resistance to ultraviolet light, and can monitor ignition conditions more accurately.

(3) The ignition device electrode adopts the tantalum rod, has high hydrochloric acid corrosion resistance and good conductivity, improves the service life and ignition safety and reliability, and the ignition gun adopts the baffle to isolate the electrode from the circuit of the temperature probe, ensures the safety, and the electrode end is sleeved with the graphite head, can reduce the loss of the tantalum rod, improves the service life of the tantalum rod, reduces the cost, and also has better ignition effect.

(4) The gun head fixing seat and the detection fixing seat are integrally formed by polytetrafluoroethylene materials, so that the gun head fixing seat and the detection fixing seat have good corrosion resistance, pollution resistance, coking resistance and acid mist resistance to hydrochloric acid and the like, the use safety and the service life are ensured, meanwhile, the gun head fixing seat and the detection fixing seat are not easy to deform, the sealing performance is good, the system safety is further ensured, and the gun head fixing seat and the detection fixing seat are suitable for various harsh environments.

(5) The system is provided with an independent flame monitoring device for directly monitoring ultraviolet rays of flame in the synthesis furnace, the ignition device is also provided with a temperature probe, the temperature probe is monitored by adopting a PT1000 platinum thermal resistor and a 0-400-degree temperature transmitter, a temperature change result is output by a 4-20mA analog signal, the system has the characteristics of high precision, high sensitivity and the like, the ignition condition in the synthesis furnace is monitored by two ways, the safety and the reliability of the system in the working process are ensured, and the system is more beneficial to automatic control.

(6) The outlet of the air channel is arranged on the front end face of the gun head fixing seat, air only exists around the ignition device fixing frame and the electrode, the synthetic furnace is in a fully-closed state in the ignition process, and the phenomenon that chlorine and hydrogen chloride are easily leaked because the furnace door of the synthetic furnace is opened and the synthetic furnace is filled with air when the synthetic furnace is ignited by a traditional method is avoided.

(7) Through setting up independent ignition and flame monitoring devices, temperature detection combines together with the ultraviolet ray monitoring of flame, once ignite, the success rate can reach 100%, it needs to detect repeatedly many times to have avoided traditional ignition equipment, the process is complicated, there is the shortcoming of potential safety hazard, the tantalum rod electrode, ceramic ignition hydrogen pipe, the electrode protection tube, the quartz capsule, PT1000 platinum resistance, polytetrafluoroethylene material rifle head fixing base, the use of detection fixing base, need not sweep nitrogen gas to the synthetic stove repeatedly, not only reduced the process, the cost is reduced, nitrogen gas is more avoided remaining and to the influence of synthetic hydrogen chloride purity, still can set up a plurality of flame monitoring devices according to the circumstances simultaneously, when a breaks down, other can also normally work, the reliability of system has been guaranteed.

(8) The ignition device and the flame monitoring device of the system can also be directly installed on a user site, are directly connected with the DCS control system and are directly controlled by the DCS control system, so that the full automation of the production process of chemical products is realized, and the safety problem in the operation process of chemical equipment such as a synthesis furnace and the like is thoroughly solved.

(9) The flame monitoring device can also be provided with two or more quartz tubes in the same probe fixing seat according to the condition, each quartz tube is provided with an independent sensor and a current amplifier, so that a plurality of flame monitoring devices are not required to be installed, the space is saved, meanwhile, when one group of the flame monitoring devices does not work, other flame monitoring devices can be normally monitored, and the safety and the reliability are ensured.

Drawings

FIG. 1 is a schematic structural diagram of an auto-ignition system of a synthesis furnace according to the present invention;

FIG. 2 is an exploded view of the ignition control box, gas control cabinet of FIG. 1;

FIG. 3 is an exploded view of the firearm of FIG. 1;

FIG. 4 is a left side view of the gun head mounting of FIG. 3;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 8 is a schematic structural view of the electrode of FIG. 3;

FIG. 9 is an exploded view of the flame detector and the electric cabinet of FIG. 1;

FIG. 10 is a cross-sectional view of the probe fixture of FIG. 9;

fig. 11 is a sectional view of the probe holder in which two quartz tubes are installed when the flame monitor apparatus employs two quartz tubes.

In fig. 1 to 11, an ignition device 1, an ignition control box 11, an ignition control box body 111, a wire holder 112, a high-pressure ignition pack 113, a temperature transmitter 114, a two-position three-way solenoid valve 115, a normally closed solenoid valve 116, a three-way joint 117, a first cable 12, a first explosion-proof tube 121, a gas control cabinet 13, a hydrogen gas delivery system 131, a hydrogen gas input interface 1311, a hydrogen gas pipe 1312, a hydrogen gas flow meter 13121, a hydrogen gas ball valve 13122, a hydrogen gas pressure gauge 13123, a hydrogen pressure reducing valve 13124, a hydrogen check valve 13125, a hydrogen gas flame arrestor 13126, a pneumatic valve 13127, a hydrogen gas output interface 1313, a pneumatic valve control air pipe 1314, an air delivery system 132, an air input interface 1321, an air pipe 1322, an air ball valve 13221, an air pressure gauge 13222, an air pressure reducing valve 13223, an air check valve 13224, an air flow meter 13225, an air output interface 132, an ignition gun 16, a gun head fixing seat 161, a hydrogen channel 1611, a hydrogen channel inlet 16111, a hydrogen channel outlet 16112, an ignition hydrogen pipe 16113, an air channel 1612, an air channel inlet 16121, an air channel outlet 16122, an electrode through hole 1613, a temperature probe through hole 1614, a first cable wire inlet 1615, a first connector clamp 16151, a first explosion-proof connector 16152, a cable terminal 1616, a baffle 1617, a temperature probe terminal 16171, a circular groove 1618, a quick-screwing connector 1619, an electrode protection pipe 162, an electrode 1621, a baffle 16211, a graphite head 163, a temperature probe 164, a gun head fixing seat cover 165, a fixing clamp 166, a synthesis furnace 2, an ignition device fixing seat 21, a flame monitoring device fixing seat 22, a flame monitoring device 3, a flame detector 31, a detection fixing seat 311, a quartz pipe through hole 1, a sensor placing groove 3112, a second cable wire inlet 3113, a quartz pipe 312, a detection seat cover 313, the sensor 314, the second explosion-proof joint 315, the second cable 32, the second explosion-proof pipe 321, the electric cabinet 33, the electric cabinet body 331, the current amplifier 332 and the electric cabinet cover 333.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solutions of the present invention easier to understand and understand.

In the present embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In addition, in the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a pin fixing manner, or a pin shaft connection manner, which is commonly used in the prior art, and therefore, the detailed description thereof is omitted in this embodiment.

An automatic ignition system of a synthesis furnace is shown in figure 1 and comprises a synthesis furnace 2, an ignition device 1 and at least one flame monitoring device 3.

As shown in the figures 1-10, the wall of the synthesis furnace 2 is fixedly provided with an ignition device fixing frame 21 and at least one flame monitoring device fixing frame 22, and the number of the flame monitoring device fixing frames 22 is the same as that of the flame monitoring devices 3.

The ignition device 1 comprises an ignition control box 11, a first cable 12, a gas control cabinet 13, a hydrogen conveying pipe 14, an air conveying pipe 15 and an ignition gun 16, wherein the ignition control box 11 comprises an ignition control box body 111, the ignition control box body 111 is fixed on the ground and the wall and keeps a fixed state, a space for laying the first cable 12 is reserved at the bottom of the ignition control box body 111, a wire holder 112 is arranged at the inner lower part of the ignition control box body 111, the wire holder 112 is fixed on the ignition control box body 111 through screws, a high-pressure ignition pack 113 is arranged at one side of the wire holder 112, the high-pressure ignition pack 113 is fixed on the ignition control box body 111 through screws, the high-pressure ignition pack 113 is changed into a 2X7kV high-pressure ignition pack by adopting AC220V, a temperature transmitter 114 is arranged above the wire holder 112, the temperature transmitter 114 monitors the temperature range of 0-400 degrees, and the temperature transmitter 114 is fixed on the ignition control, a two-position three-way electromagnetic valve 115 is arranged on one side above the temperature transmitter 114, a normally closed electromagnetic valve 116 is arranged on the other side above the temperature transmitter 114, the two-position three-way electromagnetic valve 115 and the normally closed electromagnetic valve 116 are fixed on the ignition control box body 111 through screws, the lower end of the wire holder 112 is provided with an AC220V input end, the input end is connected with an external high-voltage power supply, the upper end of the wire holder 112 is provided with an output end, the output end is respectively connected with the high-voltage ignition package 113, the temperature transmitter 114, the two-position three-way electromagnetic valve 115 and the normally closed electromagnetic valve 116 through wires, the two-position three-way electromagnetic valve 115 and the normally closed electromagnetic valve 116 are connected through a three-.

The gas control cabinet 13 is positioned outside the ignition control box 11, the positions of the gas control cabinet 13 and the ignition control box 11 are relatively fixed, and the gas control cabinet 13 is fixed above the ignition control box 11, the gas control cabinet 13 is provided with a panel 133, the panel 133 is of an inverted L-shaped structure, a hydrogen conveying system 131 and an air conveying system 132 are arranged in the gas control cabinet 13, the hydrogen conveying system 131 and the air conveying system 132 are arranged on two sides of one surface of the inverted L-shaped panel 133 facing the inside of the gas control cabinet 13, the hydrogen conveying system 131 comprises a hydrogen input interface 1311 and a hydrogen output interface 1313 which are arranged on one side of the upper edge of the inverted L-shaped panel 133, and a hydrogen ball valve 13122, a hydrogen pressure reducing valve 13124, a hydrogen one-way valve 13125, a hydrogen flame arrester 13126, a hydrogen gas ball valve 13122, a hydrogen pressure reducing valve 13124, a hydrogen gas check valve 13125, A hydrogen gas pipeline 1312 is sequentially connected between the hydrogen gas flow meter 13121, the pneumatic valve 13127 and the pneumatic valve control air pipe 1314 connecting the pneumatic valve 13127 and the outlet of the two-position three-way solenoid valve 115, the outlet of the pneumatic valve 13127 is connected with the hydrogen gas output interface 1313, a hydrogen gas pressure gauge 13123 is installed on the hydrogen gas pressure reducing valve 13124, the air delivery system 132 comprises an air input interface 1321 and an air output interface 1323 which are installed on the other side of the upper edge of the inverted L-shaped panel 133, an air ball valve 13221, an air pressure reducing valve 13223, an air one-way valve 13224 and an air flow meter 13225 which are fixed on the other side of one side of the side edge of the inverted L-shaped panel 133 facing the inside of the gas control cabinet 13, an air pipeline 1322 is sequentially connected between the air input interface 1321 and the air ball valve 13221 and the air pressure reducing valve 13223, an air pipeline 1322 is also sequentially connected between the air check valve 13224, the air flow meter 13225 and the air output interface 1323, the air pressure reducing valve 13223 is not directly connected with the air check valve 13224, an air pressure gauge 13222 is installed on the air pressure reducing valve 13223, the outlet of the air pressure reducing valve 13223 is connected with the inlet of the three-way joint 117 through the air pipeline 1322, the inlet of the normally closed electromagnetic valve 116 is connected with the other outlet of the three-way joint 117, the outlet of the normally closed electromagnetic valve 116 is connected with the inlet of the air check valve 13224 through the air pipeline 1322, namely, the ignition control box 11 and the gas control cabinet 13 are connected with the air pipeline 1322 through the.

The ignition gun 16 is positioned outside the ignition control box 11 and the gas control cabinet 13, the ignition gun 16 comprises a gun head fixing seat 161, the gun head fixing seat 161 is fixed on an ignition device fixing frame 21, the joint of the gun head fixing seat 161 and the ignition device fixing frame 21 keeps sealing, the gun head fixing seat 161 is provided with a hydrogen channel 1611 and an air channel 1612, the hydrogen channel 1611 is provided with a hydrogen channel inlet 16111 and a hydrogen channel outlet 16112, the air channel 1612 is provided with an air channel inlet 16121 and an air channel outlet 16122, the hydrogen channel inlet 16111 and the air channel inlet 16121 are arranged on the outer side surface of the gun head fixing seat 161 close to the front end, the hydrogen channel inlet 16111 is connected with a hydrogen output interface 1313 through a hydrogen conveying pipe 14, the air channel inlet 16121 is connected with an air output interface 1323 through an air conveying pipe 15, the gas control cabinet 13 is connected with the air conveying, a hydrogen channel outlet 16112 and an air channel outlet 16122 are arranged on the front end face of the gun head fixing seat 161, the hydrogen channel outlet 16112 is communicated with the ignition hydrogen tube 16113 along the outlet direction, the front end of the ignition hydrogen tube 16113 extends into the synthesis furnace 2, two electrode through holes 1613 and a temperature probe through hole 1614 are arranged in the gun head fixing seat 161 along the length direction, the two electrode through holes 1613 are arranged below the hydrogen channel 1611, the temperature probe through hole 1614 is arranged above the hydrogen channel 1611, two cable terminals 1616 and a temperature probe terminal 16171 are arranged at the rear end of the gun head fixing seat 161, an electrode protection tube 162 is respectively inserted into the two electrode through holes 1613, one end of each electrode protection tube 162 is inserted into the front end of each electrode through hole 1613, the other end of each electrode protection tube 162 extends out of the front end face of the gun head fixing seat 161 and extends into the synthesis furnace 2, an electrode 1621 is inserted into each electrode protection tube 162, one end of, the other end of the electrode protection tube 162 extends out of the other end port of the electrode protection tube 162 and extends into the synthesis furnace 2, one end of each electrode 1621 positioned in the synthesis furnace 2 is sleeved with a graphite head 163, the electrode 1621, the electrode protection tube 162 and the electrode through hole 1613 are respectively kept sealed and relatively fixed, in order to meet the ignition requirement, the distance between the two electrodes 1621 is not more than 50 mm and the two graphite heads cannot be in direct contact, the distance between the ignition hydrogen tube 16113 and the surface where the axial center lines of the two electrodes 1621 are positioned is not more than 50 mm, the temperature probe 164 is sealed and fixed in the temperature probe through hole 1614, one end of the temperature probe 164 is connected with the temperature probe wiring terminal 16171, the other end of the temperature probe 164 extends out of the front end face of the gun head fixing seat 161 and extends into the synthesis furnace 2, the distance between the temperature probe 164 and the hydrogen ignition tube 16113 is not more than 60 mm, the end of one end of the temperature probe 164 positioned in the synthesis furnace, the ends of the temperature probe 164 and the electrode 1621 at one end in the synthesis furnace 2 slightly exceed the front end port of the ignition hydrogen tube 16113 in the synthesis furnace 2, and the length of the excess is 15 mm-40 mm, so as to meet the requirement of accurate detection of the temperature probe 164 on the temperature, the temperature probe terminal 16171 is connected with the temperature transmitter 114 through a conducting wire, and the two cable terminals 1616 are connected with the high-voltage ignition package 113 through the first cable 12.

In order to obtain good corrosion resistance, pollution resistance, coking resistance, acid mist resistance, convenient operation and improved safety, the gun head fixing seat 161 is integrally formed by polytetrafluoroethylene materials and has a step-shaped cylindrical structure, the front end of the gun head fixing seat 161 is a large cylinder with a cylindrical boss and a small cylinder with a smaller length and a larger diameter, the rear end of the gun head fixing seat 161 is a small cylinder with a longer length and a smaller diameter, the gun head fixing seat 161 is fixedly and hermetically kept with the ignition device fixing frame 21 at the junction of the large cylinder and the small cylinder, namely, the large cylinder at the front end of the gun head fixing seat 161 is arranged in the ignition device fixing frame 21, the small cylinder at the rear end of the gun head fixing seat 161 is arranged outside the ignition device fixing frame 21, one end face of the large cylinder connected with the small cylinder of the gun head fixing seat 16 is attached to the ignition device fixing frame 21, and the joint of the small cylinder at the rear end of the gun, the hydrogen channel inlet 16111 and the air channel inlet 16121 are arranged on the outer side face of a small cylinder close to a large cylinder, in order to improve convenience and safety, the hydrogen channel inlet 16111 and the air channel inlet 16121 are respectively provided with a quick-screwing joint 1619, the hydrogen conveying pipe 14 and the air conveying pipe 15 are respectively and quickly connected to the hydrogen channel inlet 16111 and the air channel inlet 16121 through the quick-screwing joints 1619, the hydrogen channel outlet 16112 and the air channel outlet 16122 are arranged on the front end face of a cylindrical boss, in order to achieve better effect, the parts of the hydrogen channel 1611 and the air channel 1612 on the side faces of the gun head fixing base 161 are radially arranged along the cross section of the gun head fixing base 161, the parts of the hydrogen channel 1611 and the air channel 1612 along the length direction of the gun head fixing base 161 are parallel to the axial central line of the gun head fixing base 161, and the hydrogen channel outlet 16112 is communicated with an ignition hydrogen, in order to improve corrosion resistance and temperature resistance, a ceramic tube is adopted as the ignition hydrogen tube 16113, the front end of the ignition hydrogen tube 16113 extends into the synthetic furnace, a circular groove 1618 is arranged inside the rear end of the gun head fixing seat 161, two cable terminals 1616 are arranged at the bottom of the circular groove 1618, a baffle 1617 is arranged in the circular groove 1618, the baffle 1617 is fixed at the bottom of the circular groove 1618, the baffle 1617 adopts a structure with a notch, the two cable terminals 1616 are positioned at the notch of the baffle 1617, a temperature probe connecting terminal 16171 is arranged on the baffle 1617, two electrode through holes 1613 and a temperature probe through hole 1614 which are parallel to the axial central line are arranged in the gun head fixing seat 161 along the length direction, the two electrode through holes 1613 are positioned at the same horizontal position in the gun head fixing seat 161, the two electrode through holes 1613 are positioned in the same semicircle of the cross-section circle of the gun head fixing seat 161 and have the same distance with, in order to improve the corrosion resistance and the temperature resistance, the electrode protection tubes 162 are ceramic tubes, one end of each electrode protection tube 162 is inserted into the front end of each electrode through hole 1613 positioned in the cylindrical boss, the other end of each electrode protection tube 162 extends out of the front end face of the cylindrical boss of the gun head fixing seat 161 and extends into the synthesis furnace 2, an electrode 1621 is inserted in each electrode protection tube 162, an ignition hydrogen tube 16113 is positioned right above the middle position of the two electrodes 1621, in order to improve the hydrochloric acid corrosion resistance and the conductivity, the two electrodes 1621 are tantalum rods, in order to make the system more stable and reliable in the installation and use process, the two electrode protection tubes 162 and the ignition hydrogen tube 16113 are fixed through a fixing clamp 166, one end of each electrode 1621 is connected to a cable terminal 1616 of a circular groove 1618, the other end of each electrode protection tube 162 extends out of the other end port of the electrode protection, a baffle 16211 (shown in fig. 8) is fixed on each electrode 1621 at the joint with one end of the electrode protection tube 162 in each electrode through hole 1613, the electrode 1621 is prevented from moving in the electrode protection tube 162 and the electrode through hole 1613, a corrosion-resistant insulating tape is stuffed in a gap at the joint between the end of the electrode protection tube 162 at the front end of the electrode through hole 1613 and the electrode 1621, the corrosion-resistant insulating tape is wound on the electrode from the baffle 16211 to the bottom of the circular groove 1618, so that the electrode protection tube 162, the electrode 1621 and the electrode through hole 1613 are fixed and sealed at the baffle 16211, the electrode 1621 and the electrode through hole 1613 between the baffle 16211 and the bottom of the circular groove 1618 are fixed and sealed, the temperature probe 164 is sealed and fixed in the temperature probe through hole 1614, the temperature probe 164 adopts PT1000 platinum thermistor, one end of the temperature probe 164 is connected with a temperature terminal probe 16171 on the baffle 1617, the other end of the temperature probe extends out of the front end face of the gun head, the side wall of the circular groove 1618 is provided with a first cable inlet 1615, the first cable inlet 1615 is provided with a first connector clamp 16151, a first explosion-proof connector 16152 is inserted into the first connector clamp 16151, one end of a first cable 12 passes through the first explosion-proof connector 16152 and is connected with a cable binding post 1616, the other end of the first cable is connected with a high-pressure ignition pack 113, a first explosion-proof tube 121 is further arranged between the high-pressure ignition pack 113 and the first explosion-proof connector 16152, the first cable 12 passes through the first explosion-proof tube 121, a notch of the circular groove 1618 is fixedly connected with a gun head fixing seat cover 165 through threads, the side wall of the circular groove 1618 can also be provided with a lead inlet, and the temperature probe connecting terminal 16171 can be connected with the temperature transmitter 114 through a lead passing through.

The flame monitoring device 3 comprises an electric cabinet 33, a flame detector 31 and a second cable 32, wherein the flame detector 31 comprises a detection fixing seat 311, at least one quartz tube 312 and sensors 314 matched with the number of the quartz tubes, in order to improve the corrosion resistance, high temperature resistance, pollution resistance, installation and use convenience of the flame detector, the detection fixing seat 311 is integrally formed by polytetrafluoroethylene materials, the detection fixing seat 311 is arranged to be a step-shaped cylindrical structure, the front end of the detection fixing seat 311 is arranged to be a large cylinder with small length and large diameter, the rear end of the detection fixing seat is arranged to be a small cylinder with long length and small diameter, the detection fixing seat 311 is provided with quartz tube through holes 3111 (shown in figure 10) matched with the number of the quartz tubes along the length direction, in order to facilitate installation and use, each quartz tube through hole 3111 is parallel to the axial central line of the detection fixing seat 311, the tail ends of, a second cable inlet 3113 is arranged on the side wall of the sensor placement groove 3112, a second explosion-proof joint 315 is arranged at the second cable inlet 3113, a detection seat cover 313 is fixedly connected to the notch of the sensor placement groove 3112 through threads, each sensor 314 is arranged in the sensor placement groove 3112, the detection fixing seat 311 is hermetically fixed on the flame monitoring device fixing frame 22, a large cylinder at the front end of the detection fixing seat 311 is arranged in the flame monitoring device fixing frame 22, one end face of the large cylinder connected with a small cylinder is attached to the flame monitoring device fixing frame 22, a small cylinder at the rear end of the detection fixing seat 311 can be pressed and connected through a flange, the small cylinder is arranged outside the flame monitoring device fixing frame 22, the joint of the small cylinder at the rear end of the detection fixing seat 311 and the flame monitoring device fixing frame 22 is kept fixed and sealed, each quartz tube 312 is fixed and hermetically arranged in each quartz tube through hole 3111, one end of each, the other end is fixedly connected with each sensor 314, and the height of the end of each quartz tube 312 extending into the synthesis furnace 2 is the same as that of the end of the temperature probe 164 extending into the synthesis furnace or is slightly higher than that of the end of the temperature probe 164 extending into the synthesis furnace.

The electric cabinet 33 includes electric cabinet box 331, electric cabinet box lid 333 and with sensor 314 quantity assorted current amplifier 332, every current amplifier 332 is fixed to be set up in electric cabinet box 331, be connected with between electric cabinet 33 and the flame detector 31 with sensor 314 quantity assorted second cable 32, every second cable 32 one end is connected on every sensor 314 through the explosion-proof joint 315 of second, the other end is connected on every current amplifier 332, for improving system's electrical property, be provided with second explosion-proof pipe 321 between explosion-proof joint 315 of second and the electric cabinet 33, every second cable 32 is worn to locate in the explosion-proof pipe 321 of second.

As a better implementation mode, the flame monitoring device 3 includes an electric cabinet 33, a flame detector 31, two second cables 32, the flame detector 31 includes a detection fixing seat 311, two quartz tubes 312 and two sensors 314, the detection fixing seat 311 is provided with two quartz tube through holes 3111 parallel to the axial center line of the detection fixing seat 311 along the length direction, and more preferably, the two quartz tube through holes 3111 are located at the same horizontal position in the detection fixing seat 311 and are symmetrical with respect to the axial center line of the detection fixing seat 311, the two sensors 314 are both disposed in the sensor placement groove 3112, each quartz tube 312 is fixed and hermetically disposed in each quartz tube through hole 3111 (as shown in fig. 11), one end of each quartz tube 312 extends into the synthesis furnace 2, the other end is fixedly connected to each sensor 314, the height of the end of the two quartz tubes 312 extending into the synthesis furnace 2 is the same as the height of the end of the temperature probe 164 extending into the synthesis furnace or is slightly higher than the height of the temperature probe 164 extending A tip inside the furnace.

Two current amplifiers 332 are arranged in the electric cabinet 33, the two current amplifiers 332 are fixedly arranged in the electric cabinet body 331, one end of each second cable 32 is connected to each sensor 314 through a second explosion-proof connector 315, and the other end of each second cable is connected to each current amplifier 332.

To achieve the desired monitoring effect, the axial centerline of each quartz tube 312 is at an angle of more than 90 degrees to the axial centerline of the temperature probe 164.

Meanwhile, when the number of the flame monitoring devices 3 is one, the flame monitoring devices are arranged on the wall of the synthesis furnace 2 opposite to the ignition device 1, when a plurality of flame monitoring devices 3 are arranged, one flame monitoring device is arranged on the wall of the synthesis furnace 2 opposite to the ignition device 1, and the synthesis furnace 2 is in a relatively closed state except that the wall is provided with an ignition device fixing frame 21 and a flame monitoring device fixing frame 22, the ignition device 1 and the flame monitoring device 3 are respectively arranged, and necessary gas such as chlorine and other inlets are arranged.

Correspondingly, the embodiment of the invention also provides an automatic ignition method of the synthesis furnace, which comprises the following steps:

(1) fixing a gun head fixing seat 161 provided with an ignition hydrogen pipe 16113, an electrode protection pipe 162, an electrode 1621, a graphite head 163 and a temperature probe 164 on a synthesis furnace ignition device fixing frame 21, enabling the temperature probe 164 to be positioned at the uppermost part, enabling the ignition hydrogen pipe 16113, the electrode protection pipe 162, the electrode 1621, the graphite head 163 and the temperature probe 164 to extend into the synthesis furnace 2, and enabling the joint of the ignition device fixing frame 21 and the gun head fixing seat 161 to be kept fixed and sealed;

(2) installing and fixing a fire control box 11 and a gas control cabinet 13;

(3) the hydrogen gas delivery system 131 and the air delivery system 132 are respectively connected by a hydrogen gas pipeline 1312 and an air pipeline 1322, the pneumatic valve 13127 is connected with the outlet of the two-position three-way solenoid valve 115 by the pneumatic valve control air pipe 1314, the outlet of the air pressure reducing valve 13223 is connected with the inlet of the three-way joint 117 and the inlet of the air one-way valve 13224 is connected with the outlet of the normally closed solenoid valve 116 by the air pipeline 1322, the wire holder 112 is connected with the high-pressure ignition package 113 and the temperature transmitter 114, the two-position three-way electromagnetic valve 115 and the normally closed electromagnetic valve 116 are connected by leads, the hydrogen output interface 1313 is connected with the hydrogen channel inlet 16111 by a hydrogen conveying pipe 14, the air output interface 1323 is connected with the air channel inlet 16121 by an air conveying pipe 15, the cable terminal 1616 is connected with the high-pressure ignition package 113 by a first cable 12, the temperature probe terminal 16171 is connected with the temperature transmitter 114 by a lead, and the gun head fixing seat cover 165 is covered;

(4) installing and fixing an electric cabinet 33;

(5) the flame detector 31 is arranged on the flame monitoring device fixing frame 22, the quartz tube 312 extends into the synthesis furnace 2, the end of the quartz tube 312 in the synthesis furnace 2 and the end of the temperature probe 164 are at the same horizontal position or slightly higher, the included angle between the axial center line of the quartz tube 312 and the axial center line of the temperature probe 164 is more than 90 degrees, the joint of the detection fixing seat 311 and the flame monitoring device fixing frame 22 is kept fixed and sealed, and the distance between the electric cabinet 33 and the flame detector 31 is not more than 10 meters;

(6) connecting the sensor 314 with the current amplifier 332 with the second cable 32;

(7) before ignition, whether the power grounding is good or not is checked, the power voltage is 220V/50HZ, the wire holder 112 is externally connected with a power supply, and the current amplifier 332 is externally connected with the power supply;

(8) connecting a two-position three-way solenoid valve 115 and a normally closed solenoid valve 116 to DC24V from a wire holder 112 respectively;

(9) the air is input, the gas control cabinet 13 is connected with compressed air through an air input interface 1321, the normally closed electromagnetic valve 116 is opened after being electrified, the compressed air flows through an air ball valve 13221, an air reducing valve 13223, the normally closed electromagnetic valve 116, an air one-way valve 13224, an air flow meter 13225 and an air output interface 1323, the air flow meter 13225 is adjusted after the air pressure is reduced through the air reducing valve 13223, the pressure of the air reducing valve 13223 is adjusted to 0.5MPa, the air flow meter 13225 is adjusted to 10L/min, then the compressed air is connected into the ignition gun 16 through an air channel inlet 16121 and an air output interface 1323 through an air conveying pipe 15 with 10mmPFA, and enters the ignition device fixing frame 21;

(10) and after air is introduced for 60 seconds, hydrogen is introduced, specifically: one part of compressed air enters a two-position three-way electromagnetic valve 115 through a three-way joint 117 and then enters a pneumatic valve 13127, at this time, the pneumatic valve 13127 is opened under the action of the compressed air, the gas control cabinet 13 is connected with hydrogen through a hydrogen input interface 1311, the hydrogen sequentially flows through a hydrogen ball valve 13122, a hydrogen pressure reducing valve 13124, a hydrogen one-way valve 13125, a hydrogen flame arrester 13126, a hydrogen flowmeter 13121, the pneumatic valve 13127 and a hydrogen output interface 1313, the hydrogen flowmeter 13121 is adjusted to 0.2MPa after the hydrogen pressure is reduced by the hydrogen pressure reducing valve 13124, the pressure of the hydrogen pressure reducing valve 13124 is adjusted to 5L/min, then hydrogen is connected into an ignition gun 16 through a hydrogen channel inlet 16111 of the ignition gun 16 by the hydrogen output interface 1313 through a hydrogen channel inlet 16111 of the ignition gun 16, and then is sent into a synthesis furnace 2 through the ignition hydrogen pipe 16113;

(11) when hydrogen is introduced, the high-pressure ignition bag 113 is connected to AC220V, and the high-pressure ignition bag is electrified to ignite;

(12) the temperature probe 164 transmits the temperature signal to the temperature transmitter 114 through a wire, so as to monitor the ignition condition in time, and simultaneously, the power supply of the electric cabinet 33 is connected, so that the flame detector 31 works, and the flame in the synthesis furnace 2 is monitored.

When the successful ignition is detected, the ignition is stopped, the hydrogen gas delivery system 131 and the air delivery system 132 are closed, the flame monitoring device 3 continues to work, and the flame in the synthesis furnace 2 continues to be monitored.

The wire holder 112 in the ignition control box 11 and the current amplifier 332 in the electric control box 33 can also be connected with a DCS control system, the DCS system inputs control signals to the high-pressure ignition package 113, the two-position three-way electromagnetic valve 115 and the normally closed electromagnetic valve 116 of the ignition control box 11, receives signals output by the temperature transmitter 114, and the DCS system receives signals output by the current amplifier 332, so that the automatic control and monitoring of the ignition process by the DCS system are formed.

Also, during use, it should be noted that the ends of the first and second cables 12, 32 are twisted; the wire type is solid or twisted.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, such as the composition and the type of the components of the hydrogen gas delivery system and the air delivery system, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of the present invention.

Claims

1. The utility model provides a synthetic furnace automatic ignition system, includes synthetic furnace and ignition and at least one flame monitoring device, ignition includes ignition control box, gas control cabinet, burning torch, hydrogen conveyer pipe and air delivery pipe, be connected with first cable between ignition control box and the burning torch, ignition control box includes ignition control box, installs the connection terminal of lower part in ignition control box, is located connection terminal one side, and is fixed in the high pressure ignition package on the ignition control box, sets up the temperature transmitter above the connection terminal, and be fixed in the temperature transmitter on the ignition control box, and set up two-position three way solenoid valve and normally closed solenoid valve on the temperature transmitter top both sides, and be fixed in the ignition control box, the connection terminal lower extreme is connected with outside high voltage power supply, connection terminal upper end and high pressure ignition package, The temperature transmitter, the two-position three-way electromagnetic valve and the normally closed electromagnetic valve are respectively connected through leads, the two-position three-way electromagnetic valve and the normally closed electromagnetic valve are connected through a three-way joint, the gas control cabinet is positioned outside the ignition control box, the positions of the gas control cabinet and the ignition control box are relatively fixed, the gas control cabinet is provided with a panel, the panel is in an inverted L shape, a hydrogen conveying system and an air conveying system are arranged in the gas control cabinet, the hydrogen conveying system comprises a hydrogen input interface and a hydrogen output interface which are arranged on one side of the upper edge of the inverted L-shaped panel, a hydrogen ball valve, a hydrogen pressure reducing valve, a hydrogen one-way valve, a hydrogen flame arrester, a hydrogen flow meter, a pneumatic valve and a pneumatic valve control air pipe which is sequentially fixed on one side of one surface of the side of the inverted L-shaped panel, a hydrogen pipeline is sequentially connected among the hydrogen input interface, the hydrogen ball valve, the hydrogen pressure reducing valve, the hydrogen one-way valve, the hydrogen flame arrester, the hydrogen flowmeter and the pneumatic valve, the outlet of the pneumatic valve is connected with the hydrogen output interface, a hydrogen pressure gauge is installed on the hydrogen pressure reducing valve, the air conveying system comprises an air input interface and an air output interface which are installed at the other side of the upper edge of the inverted L-shaped panel, and an air ball valve, an air pressure reducing valve, an air one-way valve and an air flowmeter which are sequentially fixed at the other side of one side of the inverted L-shaped panel facing the inside of the gas control cabinet, air pipelines are respectively and sequentially connected among the air input interface, the air ball valve, the air pressure reducing valve, the air one-way valve, the air flowmeter and the air output interface, an air pressure gauge is installed on the air, the flame monitoring device comprises an electric cabinet and a flame detector, wherein a second cable is connected between the electric cabinet and the flame detector, and the flame monitoring device is characterized in that: the synthetic furnace wall is fixedly provided with an ignition device fixing frame and a flame monitoring device fixing frame, the ignition gun and the flame detector are respectively and fixedly arranged on the ignition device fixing frame and the flame monitoring device fixing frame in a sealing way, and the front ends of the ignition gun and the flame detector respectively extend into the synthetic furnace;

2. The auto-ignition system of a synthesis furnace according to claim 1, wherein: the gun head fixing seat is integrally formed by polytetrafluoroethylene materials and is of a stepped cylindrical structure, the front end of the gun head fixing seat is a large cylinder with a cylindrical boss and a smaller diameter, the large cylinder is smaller in length and larger in diameter, the rear end of the gun head fixing seat is a small cylinder with longer length and smaller diameter, the gun head fixing seat is fixedly and hermetically kept with an ignition device fixing frame at the junction of the large cylinder and the small cylinder, a hydrogen channel inlet and an air channel inlet are arranged on the outer side surface of the small cylinder close to the large cylinder, a hydrogen channel outlet and an air channel outlet are arranged on the front end surface of the cylindrical boss, the parts of the hydrogen channel and the air channel along the length direction of the gun head fixing seat are parallel to the axial central line of the gun head fixing seat, the hydrogen channel outlet is communicated with an ignition hydrogen pipe along the outlet direction, the ignition hydrogen pipe is parallel to the axial central line of the, the bottom of the circular groove is provided with two cable binding posts, a baffle plate is arranged in the circular groove, the baffle plate is provided with a temperature probe connecting terminal, two electrode through holes and a temperature probe through hole which are parallel to an axial central line are arranged in the gun head fixing seat along the length direction, the two electrode through holes are positioned at the same horizontal position in the gun head fixing seat, an electrode protection tube is respectively inserted in the two electrode through holes, one end of each electrode protection tube is inserted in the front end of the electrode through hole positioned in the cylindrical boss, the other end of each electrode protection tube extends out of the front end face of the cylindrical boss of the gun head fixing seat and extends into the synthetic furnace, an electrode is inserted in each electrode protection tube, one end of each electrode is connected to one cable binding post, the other end of each electrode extends out of the electrode protection tube and extends into the synthetic furnace, a graphite head is sleeved at the end, and a baffle ring, the electrode protection tube and the electrode are fixed and sealed at the retainer ring, the electrode between the retainer ring and the bottom of the circular groove and the electrode through hole are fixed and sealed, the temperature probe is sealed and fixed in the temperature probe through hole, one end of the temperature probe penetrates through the bottom of the circular groove and extends out of the retainer plate to be connected with a temperature probe connecting terminal, the other end of the temperature probe extends out of the front end face of the cylindrical boss of the gun head fixing seat and extends into the synthetic furnace, the side wall of the circular groove is provided with a first cable inlet, the first cable inlet is provided with a first connector clamp, a first explosion-proof connector is inserted into the first connector clamp, one end of the first cable penetrates through the first explosion-proof connector to be connected with a cable terminal, the other end of the first cable is connected with the high-pressure ignition bag, a first explosion-proof tube is further arranged between the high-pressure ignition bag and the explosion-proof connector, and, the circular groove notch is fixedly connected with a gun head fixing seat blank cap through threads.

3. A synthesis furnace auto-ignition system according to claim 1 or 2, characterized in that: the ignition hydrogen pipe is a ceramic ignition hydrogen pipe, the electrode protection pipe is a ceramic electrode protection pipe, the electrode is made of a tantalum rod, and the two electrode protection pipes and the ignition hydrogen pipe are fixed through fixing cards.

4. The auto-ignition system of a synthesis furnace according to claim 2, wherein: the flame detector comprises a detection fixing seat, at least one quartz tube and a sensor matched with the quartz tube in quantity, the detection fixing seat is of a step-shaped cylindrical structure and is integrally formed by polytetrafluoroethylene materials, the front end of the detection fixing seat is a large cylinder with smaller length and larger diameter, the rear end of the detection fixing seat is a small cylinder with longer length and smaller diameter, quartz tube through holes matched with the quartz tube in quantity are formed in the detection fixing seat along the length direction, each quartz tube through hole is parallel to the axial central line of the detection fixing seat, a sensor placing groove is formed in the tail end of the small cylinder of the detection fixing seat, a second cable inlet is formed in the side wall of the sensor placing groove, a second explosion-proof joint is arranged at the second cable inlet, a detection seat cover is fixedly connected to the notch of the sensor placing groove through threads, and the sensor is arranged in, the detection fixing seat is fixed on the flame monitoring device fixing frame in a sealing mode, the large cylinder at the front end of the detection fixing seat is arranged in the flame monitoring device fixing frame, the small cylinder at the rear end of the detection fixing seat is arranged outside the flame monitoring device fixing frame, each quartz tube penetrates through each quartz tube through hole in a sealing mode, one end of each quartz tube extends into the synthetic furnace, the other end of each quartz tube is fixedly connected to each sensor, the height of one end, extending into the synthetic furnace, of each quartz tube in the synthetic furnace is the same as or slightly higher than the height of one end, extending into the synthetic furnace, of each temperature probe in the synthetic furnace, and the included angle between the axial central line of each quartz tube and the axial central line of each temperature probe is more.

5. The auto-ignition system of a synthesis furnace according to claim 4, wherein: the electric cabinet comprises an electric cabinet box body, an electric cabinet box cover and current amplifiers matched with the number of the sensors, each current amplifier is fixedly arranged in the electric cabinet box body, second cables matched with the number of the sensors are connected between the electric cabinet and the flame detector, one end of each second cable is connected to each sensor through a second explosion-proof joint, the other end of each second cable is connected to each current amplifier, a second explosion-proof pipe is arranged between each second explosion-proof joint and the electric cabinet, and the second cables penetrate through the second explosion-proof pipes.

6. The auto-ignition system of a synthesis furnace according to claim 1, wherein: the flame monitoring device is arranged on the wall of the synthesis furnace opposite to the ignition device.

7. The auto-ignition method of a synthesis furnace auto-ignition system according to claim 5, wherein: the method specifically comprises the following steps:

(2) fixedly installing a fire control box and a gas control cabinet;

(4) fixedly installing an electric cabinet;