CN212132518U

CN212132518U - Ignition device of boiler and boiler

Info

Publication number: CN212132518U
Application number: CN202020317505.1U
Authority: CN
Inventors: 徐荣田; 苗俊明; 陈亮; 张战强; 张海龙; 张国兴
Original assignee: Shenhua Guoneng Ningxia Yuanyang Lake Power Generation Co ltd; Shenhua Guoneng Group Corp Ltd
Current assignee: Shenhua Guoneng Ningxia Yuanyang Lake Power Generation Co ltd; Shenhua Guoneng Group Corp Ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-12-11
Anticipated expiration: 2030-03-13

Abstract

The invention discloses an ignition device of a boiler and the boiler, wherein the ignition device comprises an ignition gun, a sleeve, a wear sensing device, an alarm device and a power supply device; the sleeve comprises a sleeve main body and an anti-abrasion sleeve, the sleeve main body is sleeved outside the ignition gun, the anti-abrasion sleeve ring is arranged on the sleeve main body, the abrasion sensing device is arranged between the sleeve main body and the anti-abrasion sleeve, the abrasion sensing device is electrically connected with the alarm device, and the abrasion sensing device and the alarm device are respectively electrically connected with the power supply device; under the condition that the wear-resistant sleeve is worn, the wear sensing device generates a wear sensing signal, and the alarm device detects the wear sensing signal and sends out an alarm signal. The scheme can solve the problem that the safety of the boiler is low due to the fact that the sleeve is not easy to find after being abraded, and accordingly the ignition gun is damaged.

Description

Ignition device of boiler and boiler

Technical Field

The invention relates to the technical field of boiler manufacturing, in particular to an ignition device of a boiler and the boiler.

Background

The boiler includes an ignition device for igniting a combustion object such as pulverized coal, thereby enabling the combustion object to be stably burned.

In the related art, the ignition device comprises an ignition gun and a sleeve, wherein the sleeve is sleeved outside the ignition gun and can prevent combustion objects such as pulverized coal and the like from wearing the ignition gun, so that the purpose of protecting the ignition gun is achieved.

However, after the sleeve is washed by the combustion products such as pulverized coal for a long time, the sleeve is easily worn through. Because ignition installs inside the boiler, when the sleeve pipe by the wearing-out, operating personnel is difficult to observe, consequently be difficult to discover behind the sleeve pipe wearing and tearing to make burning things such as buggy can continue wearing and tearing the burning torch, thereby cause the burning torch to damage easily, and then make the security of boiler lower.

Disclosure of Invention

The invention discloses an ignition device of a boiler and the boiler, which aim to solve the problem that the safety of the boiler is low because an ignition gun is damaged because a sleeve is not easy to find after being worn.

In order to solve the problems, the invention adopts the following technical scheme:

an ignition device of a boiler comprises an ignition gun, a sleeve, a wear sensing device, an alarm device and a power supply device;

the sleeve comprises a sleeve main body and an anti-abrasion sleeve, the sleeve main body is sleeved outside the ignition gun, the anti-abrasion sleeve ring is arranged on the sleeve main body, the abrasion sensing device is arranged between the sleeve main body and the anti-abrasion sleeve, the abrasion sensing device is electrically connected with the alarm device, and the abrasion sensing device and the alarm device are respectively electrically connected with the power supply device;

under the condition that the wear-resistant sleeve is worn, the wear sensing device generates a wear sensing signal, and the alarm device detects the wear sensing signal and sends out an alarm signal.

A boiler comprises the ignition device.

The technical scheme adopted by the invention can achieve the following beneficial effects:

in the ignition device of the boiler, when the abrasion-proof sleeve is worn, particles of a combustion object directly contact with the abrasion sensing device, the abrasion sensing device generates an abrasion sensing signal, the alarm device sends out an alarm signal after detecting the abrasion sensing signal, and an operator can be timely reminded of maintenance after the sleeve is abraded, so that the ignition gun is not easy to abrade, and the safety of the boiler is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an ignition device disclosed in an embodiment of the invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a wear sensing device of an ignition device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a fixing member in the ignition device according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of an alarm device and a power supply device in the ignition device disclosed by the embodiment of the invention.

Description of reference numerals:

100-casing, 110-casing main body, 120-anti-wear sleeve, 121-first anti-wear sleeve, 122-second anti-wear sleeve,

200-abrasion sensing device, 210-installation pipeline, 220-lead, 230-fixing piece, 231-threading hole,

300-an alarm device,

400-a power supply device,

500-attachment flange.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, an embodiment of the present invention discloses an ignition device for a boiler, which may specifically include an ignition gun, a sleeve 100, a wear sensing device 200, an alarm device 300, and a power supply device 400.

The ignition device is arranged on a shell of the boiler, and the ignition gun is a main body component of the ignition device and is used for igniting comburent in a hearth of the boiler. The ignition gun may be a plasma ignition gun, a micro-oil ignition gun, or other types of ignition guns, which is not limited herein.

The sleeve 100 includes a sleeve main body 110 and an anti-wear sleeve 120, the sleeve main body 110 is sleeved outside the ignition gun, and the anti-wear sleeve 120 is annularly disposed on the sleeve main body 110. The sleeve 100 can prevent the burning objects such as pulverized coal from wearing the ignition gun, thereby achieving the purpose of protecting the ignition gun. Optionally, the casing main body 110 may be made of a steel pipe, and the wear-resistant sleeve 120 may be made of a ceramic material or the like. One end of the casing main body 110 is provided with a coupling flange 500, and the coupling flange 500 is used to be coupled with a casing of a boiler.

The wear sensing device 200 is disposed between the casing main body 110 and the wear-resistant sleeve 120, the wear sensing device 200 is connected to and electrically connected to the alarm device 300, the wear sensing device 200 and the alarm device 300 are respectively electrically connected to the power supply device 400, and the power supply device 400 provides power to the wear sensing device 200 and the alarm device 300. In case that the wear-resistant cover 120 is worn, the wear sensing device 200 generates a wear sensing signal, and the alarm device 300 detects the wear sensing signal and sends an alarm signal.

For example, the wear sensing device 200 can detect the concentration of the combustion particles entering the space between the casing body 110 and the wear sleeve 120, so that when the concentration reaches a preset value, it can determine that the wear sleeve is worn through, and then generate a wear sensing signal. Of course, the wear sensing device 200 can also detect the brightness between the casing main body 110 and the wear-resistant sleeve 120, so that the wear-resistant sleeve 120 can be transparent after being worn, and when the brightness value reaches a preset value, it can be determined that the wear-resistant sleeve 120 is worn, and thus a wear sensing signal is generated.

Optionally, the alarm device 300 and the power supply device 400 may be disposed outside the casing of the boiler, and the alarm device 300 may be an audible alarm or a light alarm, or of course, other alarm devices may also be used, which is not limited herein. The power supply device 400 can be a direct current power supply with the rated voltage of 24V, and the power supply device 400 is electrically connected with the alarm device 300 and the abrasion sensing device 200 in a normally-closed state, so that the ignition device can be monitored in real time.

In the embodiment disclosed by the invention, after the anti-abrasion sleeve 120 is worn, particles of a combustion object directly contact with the abrasion sensing device 200, at the moment, the abrasion sensing device 200 generates an abrasion sensing signal, and the alarm device 300 sends out an alarm signal after detecting the abrasion sensing signal. In addition, the sleeve main body 110 can be detachably connected with the anti-wear sleeve 120, the wear sensing device 200 is detachably matched with the sleeve main body 110, and the wear sensing device 200 is arranged between the sleeve main body 110 and the anti-wear sleeve 120, so that the sleeve main body 110 is not easily worn, and only the anti-wear sleeve 120 is replaced when the sleeve 100 is replaced, so that the sleeve main body 110 can be repeatedly used.

Alternatively, the wear sensing apparatus 200 may be coupled to the casing body 110 and may also be coupled to the wear sleeve 120.

In the above embodiment, because the concentration of the combustion particles in the environment where the sleeve 100 is located is relatively high, the combustion particles easily enter the space between the sleeve main body 110 and the wear-resistant sleeve 120, and when the wear-resistant sleeve 120 is not worn, the concentration of the combustion particles reaches the preset value, so as to cause the alarm device 300 to give a false alarm. When the wear sensing device 200 passes through the space between the casing main body 110 and the wear sleeve 120, since the light in the boiler casing is dark, the wear sensing device 200 may not detect the brightness change when the wear sleeve 120 is worn, resulting in low reliability of the wear sensing device 200.

To this end, in another embodiment, the wear sensing device 200 may include a wire 220, the wire 220 may be disposed around the casing body 110, and the wire 220 forms a conductive loop with the alarm device 300. When the wear-resistant sleeve 120 is worn, particles of the combustion object directly contact the conducting wire 220, so that the conducting wire 220 is broken, the breaking signal is a wear sensing signal, and the alarm device 300 sends out an alarm signal after detecting the breaking signal of the conducting wire 220. In this embodiment, the wear-resistant sleeve 120 is worn through first on the premise that the conducting wire 220 is worn off, so that the accuracy of the wear-sensitive device 200 can be improved, and the reliability of the wear-sensitive device 200 can be improved.

In the above embodiment, the particles of the combustion products move from bottom to top, and thus the lower portion of the casing 100 is worn more severely, and in an alternative embodiment, the casing 100 may have a first region, which may be a wear-prone region, which may be a lower region of the casing 100, and the wear-sensing device 200 may be located in the first region. At this time, the wear sensing device 200 monitors the easily worn area, so that the alarm accuracy is improved, and meanwhile, the ignition device is simpler and more compact in structure, and the manufacturing cost of the ignition device is reduced.

The easily worn region may be divided according to human experience, or the easily worn region of the sleeve 100 may be obtained according to a wear experiment.

In another embodiment, the sleeve 100 may further have a second region, the second region being a region other than the first region, the second region having a smaller amount of wear than the first region. The wear sleeve 120 may include a first wear sleeve 121 and a second wear sleeve 122, the first wear sleeve 121 may be located in a first region, the second wear sleeve 122 may be located in a second region, and the thickness of the first wear sleeve 121 may be greater than that of the second wear sleeve 122. This increases the thickness of the wear-resistant sleeve 120 in the wear-prone region, thereby improving the wear resistance of the wear-prone region and further prolonging the service life of the sleeve 100. Because the wear loss of the second region is small, the thickness of the second wear-resistant sleeve 122 can be a conventional thickness, and the second wear-resistant sleeve 122 is not easy to wear through, so that the second wear-resistant sleeve 122 with the conventional thickness can meet the use requirement. The thickness of the first wear-resistant sleeve 121 can be obtained by human experience, or can be obtained by performing a plurality of wear tests.

In the above embodiment, the conducting wire 220 is directly wound on the sleeve main body 110, when the particles of the combustion objects impact the wear-resistant sleeve 120, the wear-resistant sleeve 120 and the conducting wire 220 are easily caused to wear, and at this time, under the condition that the wear-resistant sleeve 120 is not worn, the conducting wire 220 may be broken, so that the alarm device 300 generates a false alarm, and further, the reliability of the ignition device is low.

To this end, in an alternative embodiment, the wear sensing device 200 may include a mounting pipe 210 and a conducting wire 220, the mounting pipe 210 is distributed along the circumference of the casing main body 110, the conducting wire 220 penetrates the mounting pipe 210, the conducting wire 220 is arranged along the extending direction of the mounting pipe 210, and the conducting wire 220 forms a conducting loop with the alarm device 300. At this time, the lead 220 is located inside the mounting pipe 2210, so that the lead 220 is not easily worn away from the wear-resistant sleeve 120, and the lead 220 is not easily broken without wearing through the wear-resistant sleeve 120, thereby improving the reliability of the ignition device.

Optionally, the installation pipeline 210 may be made of a stainless steel thin tube with an outer diameter of 8 mm, the lead 220 may be made of a mica high-temperature wire with a square of 2.5, and the mica high-temperature wire has a good high-temperature resistance, so that the lead 220 is effectively prevented from aging. Of course, the mounting tube 210 and the wire 220 may be made of other materials, which is not limited herein.

In another alternative embodiment, the installation pipeline 210 may be a bar-shaped structure extending in the same direction as the axial direction of the casing 100, and the wires 220 extend through the installation pipeline 210 along the extension direction of the bar-shaped structure. In this embodiment, since the extending direction of the installation pipe 210 is the same as the axial direction of the casing 100, the longitudinal direction of the installation pipe 210 is the same as the longitudinal direction of the casing 100, and this structure enables the installation pipe 210 to cover a wide range and enables the structure formed by the installation pipe 210 and the casing 100 to have a small outer shape.

In the above embodiment, when the conducting wire 220 is broken, the operator needs to replace the casing 100 and the wear sensing device 200, so in order to improve the maintainability of the ignition device, in an alternative embodiment, a mounting gap is provided between the casing main body 110 and the wear sleeve 120, and the mounting pipe 210 is detachably inserted into the mounting gap. At this moment, the operator can draw out the worn installation pipeline 210 from the installation gap and then insert a new installation pipeline into the installation gap, so that the wear sensing device 200 is simple and convenient to operate, and the maintainability of the ignition device is improved.

To increase the sensitivity of the wear-sensing device 200, in another embodiment, the mounting tubing 210 and the lead 220 can both be wear-prone pieces. The wearing part can be made of wearing materials, such as aluminum with lower hardness. At this time, after the wear-resistant sleeve 120 is worn, the particles of the combustion products can wear the installation pipeline 210 or wear off the lead 220 in a short time, so that the sensitivity of the wear sensing device 200 is high, the worn area of the wear-resistant sleeve 120 is prevented from further expanding, and the maintenance difficulty of an operator is reduced.

In an alternative embodiment, the wear-sensing device 200 may further include a fixing member 230, the fixing member 230 may be an arc-shaped structural member, the fixing member 230 is disposed along a circumferential direction of the casing main body 110, the fixing member 230 is provided with a threading hole 231, the lead 220 passes through the threading hole 231, and the installation pipeline 210 is connected to the casing main body 110 through the fixing member 230. In this aspect, the fixing member 230 is disposed along the circumferential direction of the sleeve main body 110, so that the fixing member 230 abuts on the sleeve main body 110, and thus the installation space occupied by the fixing member 230 is small, thereby making the ignition device more compact. Meanwhile, the fixing member 230 may also be used to seal the opening between the installation casing main body 110 and the wear-resistant sleeve 120, so as to better prevent particles of combustion products from entering the gap between the casing main body 110 and the wear-resistant sleeve 120.

Optionally, a cable waterproof locking joint is arranged in the threading hole 231, so that particles of the comburent are prevented from entering the installation pipeline 210 through the threading hole 231, and the sealing performance of the abrasion sensing device 200 is further improved. The cable waterproof locking joint may be an M12 x 1.5mm waterproof locking joint.

In the above embodiment, the alarm device 300 may be a light alarm or an audible alarm, but when only one of the alarm modes is adopted, when the audible alarm or the light alarm fails, the alarm may be difficult to be realized, and thus the reliability of the ignition device is low. In order to further improve the reliability of the ignition device, in an optional embodiment, the alarm device 300 may include a light alarm and a sound alarm, at this time, the light alarm and the sound alarm are connected in parallel, the light alarm and the sound alarm are both electrically connected to the wear sensing device 200, and both the light alarm and the sound alarm can receive the wear sensing signal, so that the sound alarm and the light alarm can be simultaneously sent out, which not only can improve the alarm effect, but also can make one of the light alarm and the sound alarm break down, and the other can also send out the alarm signal, thereby improving the reliability of the ignition device. Optionally, the light alarm may be a warning light or the like, and the sound alarm may be an alarm bell, a buzzer alarm or the like.

Based on the ignition device of any one of the above embodiments of the invention, the embodiment of the invention also discloses a boiler, and the boiler disclosed by the embodiment of the invention is provided with the ignition device of any one of the above embodiments.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An ignition device of a boiler is characterized by comprising an ignition gun, a sleeve (100), a wear sensing device (200), an alarm device (300) and a power supply device (400);

the sleeve (100) comprises a sleeve main body (110) and an anti-abrasion sleeve (120), the sleeve main body (110) is sleeved outside the ignition gun, the anti-abrasion sleeve (120) is annularly arranged on the sleeve main body (110), the abrasion sensing device (200) is arranged between the sleeve main body (110) and the anti-abrasion sleeve (120), the abrasion sensing device (200) is electrically connected with the alarm device (300), and the abrasion sensing device (200) and the alarm device (300) are respectively electrically connected with the power supply device (400);

when the wear-resistant sleeve (120) is worn, the wear sensing device (200) generates a wear sensing signal, and the alarm device (300) detects the wear sensing signal and sends out an alarm signal.

2. An ignition device according to claim 1, characterized in that the sleeve (100) has a first region, the wear sensing means (200) being located in the first region.

3. The ignition device of claim 2, wherein the sleeve (100) has a second region, the wear sleeve (120) comprising a first wear sleeve (121) and a second wear sleeve (122), the first wear sleeve (121) being located in the first region and the second wear sleeve (122) being located in the second region, the first wear sleeve (121) having a thickness greater than a thickness of the second wear sleeve (122).

4. The ignition device according to claim 1, characterized in that the wear sensing device (200) comprises mounting conduits (210) and wires (220), the mounting conduits (210) being distributed along the circumference of the bushing body (110), the wires (220) extending through the mounting conduits (210) and forming a conductive loop with the alarm device (300).

5. The ignition device according to claim 4, wherein the mounting pipe (210) is a bar-shaped structure extending in the same direction as the axis of the sleeve (100), and the lead wire (220) penetrates the mounting pipe (210) in the direction in which the bar-shaped structure extends.

6. The ignition device according to claim 5, further comprising a fixing member (230), wherein the fixing member (230) is an arc-shaped structural member, the fixing member (230) is disposed along a circumferential direction of the casing main body (110), the fixing member (230) is provided with a threading hole (231), the lead (220) passes through the threading hole (231), and the installation pipeline (210) is connected with the casing main body (110) through the fixing member (230).

7. The ignition device according to claim 4, characterized in that a mounting gap is provided between the sleeve body (110) and the wear sleeve (120), and the mounting pipe (210) is detachably plugged into the mounting gap.

8. The ignition device according to claim 1, characterized in that said alarm means (300) comprise a light alarm and an audible alarm, both of which are electrically connected to said wear sensing means (200).

9. A boiler, characterized by comprising an ignition device according to any one of claims 1 to 8.