CN111678169A - Ignition device for improving service cycle of oil-fired boiler - Google Patents
Ignition device for improving service cycle of oil-fired boiler Download PDFInfo
- Publication number
- CN111678169A CN111678169A CN202010686887.XA CN202010686887A CN111678169A CN 111678169 A CN111678169 A CN 111678169A CN 202010686887 A CN202010686887 A CN 202010686887A CN 111678169 A CN111678169 A CN 111678169A
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- Prior art keywords
- ignition device
- oil
- boiler
- electrode
- junction box
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- 230000000712 assembly Effects 0.000 claims description 15
- 238000000429 assembly Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 12
- 239000000295 fuel oil Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q3/00—Igniters using electrically-produced sparks
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to an ignition device for improving the service cycle of an oil-fired boiler, which relates to an ignition device, aims to meet the use requirement, is convenient for maintaining an igniter of the boiler and solves the problem of short service cycle of the oil-fired boiler. The present invention has long service life of igniter, and thus, the service life of boiler is prolonged, the cost is lowered, and the economic benefit is increased.
Description
Technical Field
The invention relates to an ignition device, in particular to an ignition device for improving the service cycle of an oil-fired boiler, and belongs to the technical field of boiler ignition.
Background
Because of the low cost of heavy oil, oil boilers generally use heavy oil as fuel. The fuel oil is ignited by the igniter and used for boiler operation. The igniter generally adopts a fixed igniter, and an ignition electrode assembly and a high-pressure junction box are fixedly arranged on a boiler burner and used for starting and igniting the boiler under normal conditions. The ignition electrode assembly is fixed on an air door baffle of the air distributor of the boiler burner, and the high-pressure junction box is fixedly arranged on a boiler front shell of the air distributor of the boiler burner. Because the mounting position of the ignition electrode assembly faces the boiler furnace and is influenced by high temperature, the ignition electrode assembly is a vulnerable part and needs to be replaced periodically. Maintenance and replacement of the ignition electrode assembly require maintenance personnel to enter the air interlayer for disassembly and replacement, and the maintenance workload is large and the maintenance difficulty is high. Sometimes, after the boiler is stopped in operation, the temperature in the air interlayer is very high, and personnel cannot enter the boiler for a short time, so that the restarting operation of the boiler and the service cycle of the boiler are influenced. In addition, the fixed igniter is affected by the following conditions in the actual use process, so that the boiler cannot be ignited by the fixed igniter, and the service cycle of the boiler is affected. Firstly, the ignition electrode assembly is influenced by the combustion and atomization conditions of boiler fuel oil and the time of an ignition operation process, fuel oil is often sprayed on ignition electrode magnetic blocks in practical use, and coking is generated under the influence of high temperature of a hearth, so that insulation between ignition electrodes and between electrode pairs is reduced, and the igniter fails. Secondly, when the boiler is ready to start ignition, the steam pipeline for fuel oil atomization is not thoroughly drained, condensed water in the pipeline can be sprayed onto the magnetic blocks of the ignition electrode assembly, and insulation between the ignition electrodes and between the electrodes and the ground is reduced, so that the igniter fails.
In order to meet the use requirement, facilitate the maintenance of the boiler igniter and improve the service cycle of the boiler igniter, the boiler igniter is specially designed to be improved, and the ignition device for improving the service cycle of the oil-fired boiler is provided.
Disclosure of Invention
The invention provides an ignition device for improving the service cycle of an oil-fired boiler in order to meet the use requirement, facilitate the maintenance of an igniter of the boiler and solve the problem of short service cycle of the oil-fired boiler.
The technical scheme adopted by the invention for solving the problems is as follows:
the high-voltage power supply comprises two electrode assemblies, a high-voltage junction box, two telescopic assemblies, two middle contacts and two rear contacts, wherein the two electrode assemblies are inserted into the high-voltage junction box in parallel side by side, the two telescopic assemblies, the two middle contacts and the two rear contacts are sequentially installed in the high-voltage junction box from left to right, the right end of each electrode assembly is connected with the middle contact through one telescopic assembly, and the middle contact is connected with the rear contacts.
Further, each telescopic assembly comprises a spring connecting piece, a spring and a connecting sleeve piece, wherein one end of the spring is connected with one corresponding electrode assembly through the spring connecting piece; the other end of the spring is connected with one corresponding middle contact through the connecting sleeve.
Further, each electrode assembly includes an electrode and an insulating ceramic sheath that is sleeved over the electrode with a firing end of the electrode extending beyond an end of the insulating ceramic sheath.
Further, the ignition device for improving the service cycle of the oil-fired boiler further comprises a fixed pressing plate, and the fixed pressing plate is sleeved in the middle of the two insulating ceramic sheaths.
Further, the ignition device for improving the service cycle of the oil-fired boiler further comprises an external sheath, and the external surface of the high-pressure junction box is provided with the external sheath.
Further, the outer sheath is an outer sheath of a stainless steel housing.
Further, two first through holes for accommodating the electrode assembly and two second through holes for accommodating the spring assembly are respectively formed in the high-voltage junction box, and the first through holes and the second through holes are communicated.
Further, the high-voltage junction box is made of polytetrafluoroethylene.
The invention has the beneficial effects that:
1. when the ignition device is used for ignition, the electrode assembly is driven by the telescopic assembly, so that the electrode assembly has a telescopic function along with the opening and closing of the air door of the combustor, when the air door is opened, the electrode reaches a specified position along with the air door, and when the air door is closed, the ignition electrode returns to the specified position along with the air door, so that the ignition device is convenient for ignition of a boiler, and the electrode is prevented from being damaged due to high temperature;
2. the invention has simple structure and convenient maintenance, the igniter maintenance can be carried out only outside the furnace front, and is not influenced by the factor of air interlayer temperature, thereby greatly reducing the maintenance workload and shortening the maintenance time;
3. the invention improves the service cycle of the igniter, thereby improving the service cycle of the boiler, reducing the cost and improving the economic benefit.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
1. The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the ignition device for improving the service life of the oil-fired boiler in the embodiment includes two electrode assemblies 1, a high-voltage junction box 4, two telescopic assemblies, two middle contacts 8 and two rear contacts 9, the two electrode assemblies 1 are parallelly inserted into the high-voltage junction box 4 side by side, the two telescopic assemblies, the two middle contacts 8 and the two rear contacts 9 are sequentially installed in the high-voltage junction box 4 from left to right, the right end of each electrode assembly 1 is connected with the middle contact 8 through one telescopic assembly, and the middle contact 8 is connected with the rear contact 9.
The high-voltage junction box 4 and the electrode assembly 1 are fixedly connected into an integral structure, when ignition is needed, the air door baffle of the combustor is opened, the ignition electrode reaches a specified position along with the air door through the telescopic assembly, the high-voltage switch is started, and the ignition electrode ignites. After ignition, the high-voltage switch is closed, the damper of the air door of the burner is closed, and the ignition electrode retracts to a specified position along with the air door.
The second embodiment is as follows: describing the present embodiment with reference to fig. 1, each of the telescopic assemblies of the present embodiment includes a spring connector 5, a spring 6 and a connection kit 7, wherein one end of the spring 6 is connected to a corresponding one of the electrode assemblies 1 through the spring connector 5; the other end of the spring 6 is connected to a corresponding one of the intermediate contacts 8 by means of a connection sleeve 7.
So set up, can make the electrode along with combustor air door switch removes to possess flexible function through this flexible subassembly, conveniently ignite.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: referring to fig. 1, the present embodiment will be described, wherein each electrode assembly 1 of the present embodiment comprises an electrode 1-1 and an insulating ceramic sheath 1-2, the insulating ceramic sheath 1-2 is sleeved on the electrode 1-1, and the firing end of the electrode 1-1 extends out of the end of the insulating ceramic sheath 1-2.
According to the arrangement, each electrode is additionally provided with the insulating ceramic sheath 1-2 respectively for enhancing insulation and oxidation resistance.
Other components are connected in the same manner as in the second embodiment.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1, and the ignition device for improving the service life of the oil-fired boiler further comprises a fixed pressure plate 2, wherein the fixed pressure plate 2 is sleeved on the middle parts of the two insulating ceramic sheaths 1-2.
The pressing plate 2 is composed of an upper stainless steel pressing plate and a lower stainless steel pressing plate, the upper pressing plate and the lower pressing plate are arranged oppositely, and the pressing plate is used for fixing insulating ceramic sheaths outside the two electrode assemblies, plays a limiting role and is also used for being connected with a buckle on the air door baffle of the combustor.
Other components and connection relationships are the same as those in the first, second or third embodiment.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1, and the ignition device for improving the service cycle of the oil-fired boiler according to the present embodiment further includes an outer sheath 3, and the outer surface of the high-pressure junction box 4 is provided with the outer sheath 3.
Other components and connections are the same as those of the first, second, third or fourth embodiments.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1, and the outer sheath 3 according to the present embodiment is an outer sheath of a stainless steel case.
Other components and connection relationships are the same as those in the first, second, third, fourth or fifth embodiment.
The seventh embodiment: referring to fig. 1, the high-voltage terminal box 4 of the present embodiment is provided with two first through holes for accommodating the electrode assembly 1 and two second through holes for accommodating the spring assembly, respectively, and the first through holes and the second through holes are communicated with each other.
The high-voltage terminal box 4 is fixed in the outer sheath 3, the first through hole is used for penetrating into the electrode assembly, the second through hole is used for penetrating into the telescopic assembly, and the high-voltage terminal box 4 plays a role in insulating and guiding the spring and the electrode assembly.
Other components and connection relationships are the same as those in the first, second, third, fourth, fifth or sixth embodiment.
The specific implementation mode is eight: the present embodiment will be described with reference to fig. 1, and the high-voltage terminal box 4 of the present embodiment is a polytetrafluoroethylene high-voltage terminal box 4.
Other components and connection relations are the same as those of the first, second, third, fourth, fifth, sixth or seventh embodiment.
The working principle is as follows:
the ignition device is fixedly arranged on the outer side plate in front of the air distributor, so that the disassembly and the assembly on the outer side in front of the furnace are realized, when ignition is needed, the air door baffle of the combustor is opened, the ignition electrode reaches a designated position along with the air door through the matching of the telescopic assembly and the electrode, the high-voltage switch is started, and the ignition electrode ignites;
after ignition, the high-voltage switch is closed, the air door baffle of the combustor is closed, the spring is reset, and the ignition electrode returns to a specified position along with the air door;
when maintenance is needed, the igniter can be directly taken down from the front outer side plate of the air distributor for maintenance.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An ignition device for improving the service cycle of an oil-fired boiler, characterized in that: the ignition device for improving the service cycle of the oil-fired boiler comprises two electrode assemblies (1), a high-pressure junction box (4), two telescopic assemblies, two middle contacts (8) and two rear contacts (9), wherein the two electrode assemblies (1) are parallelly inserted into the high-pressure junction box (4) side by side, the two telescopic assemblies, the two middle contacts (8) and the two rear contacts (9) are sequentially installed in the high-pressure junction box (4) from left to right, the right end of each electrode assembly (1) is connected with the middle contacts (8) through one telescopic assembly, and the middle contacts (8) are connected with the rear contacts (9).
2. An ignition device for increasing a life cycle of an oil boiler as claimed in claim 1, wherein: each telescopic assembly comprises a spring connecting piece (5), a spring (6) and a connecting sleeve piece (7), and one end of each spring (6) is connected with one corresponding electrode assembly (1) through the spring connecting piece (5); the other end of the spring (6) is connected with a corresponding middle contact (8) through a connecting sleeve (7).
3. An ignition device for increasing a life cycle of an oil boiler as claimed in claim 1, wherein: each electrode assembly (1) comprises an electrode (1-1) and an insulating ceramic sheath (1-2), the insulating ceramic sheath (1-2) is sleeved on the electrode (1-1), and the ignition end of the electrode (1-1) extends out of the end part of the insulating ceramic sheath (1-2).
4. An ignition device for increasing a life cycle of an oil boiler as claimed in claim 1, wherein: the ignition device for improving the service cycle of the oil-fired boiler further comprises a fixed pressing plate (2), and the fixed pressing plate (2) is sleeved in the middle of the two insulating ceramic sheaths (1-2).
5. An ignition device for increasing a life cycle of an oil boiler as claimed in claim 1, wherein: the ignition device for improving the service cycle of the oil-fired boiler further comprises an outer sheath (3), and the outer surface of the high-pressure junction box (4) is provided with the outer sheath (3).
6. An ignition device for increasing a life cycle of an oil boiler as claimed in claim 5, wherein: the outer sheath (3) is an outer sheath of a stainless steel shell.
7. An ignition device for increasing a life cycle of an oil boiler as claimed in claim 1, wherein: the high-voltage junction box (4) is internally provided with two first through holes for accommodating the electrode assembly (1) and two second through holes for accommodating the spring assembly, and the first through holes are communicated with the second through holes.
8. An ignition device for increasing a life cycle of an oil boiler as claimed in claim 1, wherein: the high-voltage junction box (4) is made of polytetrafluoroethylene materials and is a high-voltage junction box (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010686887.XA CN111678169A (en) | 2020-07-16 | 2020-07-16 | Ignition device for improving service cycle of oil-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010686887.XA CN111678169A (en) | 2020-07-16 | 2020-07-16 | Ignition device for improving service cycle of oil-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111678169A true CN111678169A (en) | 2020-09-18 |
Family
ID=72457706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010686887.XA Pending CN111678169A (en) | 2020-07-16 | 2020-07-16 | Ignition device for improving service cycle of oil-fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111678169A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2516948A1 (en) * | 1975-04-17 | 1976-10-28 | Josef W Kappenstein | Piezoelectric electric spark generator for pocket lighter - has telescopic housing pushed together for actuating spring loaded impact pin |
| CN2068195U (en) * | 1990-04-17 | 1990-12-26 | 王利民 | Lighting gun for detonate |
| CN2177899Y (en) * | 1993-11-17 | 1994-09-21 | 昆明市静烈公司 | Firing device for diesel range |
| ATE234510T1 (en) * | 1995-12-04 | 2003-03-15 | Laforest Bic Sa | PIEZOELECTRIC MECHANISM FOR GAS LIGHTERS WITH A TELESCOPIC BODY CLOSED ON THE OUTSIDE |
| CN2667340Y (en) * | 2003-09-10 | 2004-12-29 | 王振兵 | Telescopic igniting gun |
| CN202350092U (en) * | 2011-10-28 | 2012-07-25 | 上海神明控制工程有限公司 | Anti-explosion burning torch suitable for gas-fired boiler |
| CN111322635A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Low-oxygen combustion cracking furnace and control method thereof |
| CN212537913U (en) * | 2020-07-16 | 2021-02-12 | 中国船舶重工集团公司第七0三研究所 | Ignition device for improving service cycle of oil-fired boiler |
-
2020
- 2020-07-16 CN CN202010686887.XA patent/CN111678169A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2516948A1 (en) * | 1975-04-17 | 1976-10-28 | Josef W Kappenstein | Piezoelectric electric spark generator for pocket lighter - has telescopic housing pushed together for actuating spring loaded impact pin |
| CN2068195U (en) * | 1990-04-17 | 1990-12-26 | 王利民 | Lighting gun for detonate |
| CN2177899Y (en) * | 1993-11-17 | 1994-09-21 | 昆明市静烈公司 | Firing device for diesel range |
| ATE234510T1 (en) * | 1995-12-04 | 2003-03-15 | Laforest Bic Sa | PIEZOELECTRIC MECHANISM FOR GAS LIGHTERS WITH A TELESCOPIC BODY CLOSED ON THE OUTSIDE |
| CN2667340Y (en) * | 2003-09-10 | 2004-12-29 | 王振兵 | Telescopic igniting gun |
| CN202350092U (en) * | 2011-10-28 | 2012-07-25 | 上海神明控制工程有限公司 | Anti-explosion burning torch suitable for gas-fired boiler |
| CN111322635A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Low-oxygen combustion cracking furnace and control method thereof |
| CN212537913U (en) * | 2020-07-16 | 2021-02-12 | 中国船舶重工集团公司第七0三研究所 | Ignition device for improving service cycle of oil-fired boiler |
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