CN218645560U - Plasma burner with adjustable combustion distance - Google Patents
Plasma burner with adjustable combustion distance Download PDFInfo
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- CN218645560U CN218645560U CN202220833353.XU CN202220833353U CN218645560U CN 218645560 U CN218645560 U CN 218645560U CN 202220833353 U CN202220833353 U CN 202220833353U CN 218645560 U CN218645560 U CN 218645560U
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Abstract
A plasma burner with adjustable burning distance comprises a burner outer cylinder, a burner inner cylinder, a plasma generator, a protective sleeve, a fixed pipe and a distance adjusting mechanism; the fixed pipe is arranged on the outer burner cylinder and penetrates through the cylinder wall of the outer burner cylinder; the protective sleeve and the fixed tube are coaxially arranged and penetrate through the fixed tube to enter the combustor; the front end of the plasma generator is embedded into the combustor through the protective sleeve, the end part of the front end of the plasma generator is flush with the end part of the protective sleeve, and the distance adjusting mechanism is used for adjusting the combustion distance of the plasma combustor. The utility model provides a plasma burner is equipped with apart from adjustment mechanism, can adjust the combustion distance of during operation according to the actual conditions of going into the stove coal quality to guarantee plasma burner's normal operating.
Description
Technical Field
The utility model relates to a combustor technical field, concretely relates to plasma burner with adjustable combustion distance.
Background
The ignition and stable combustion of the traditional large-scale power station pulverized coal boiler need to consume fuel oil, according to statistics, the pulverized coal boiler with 300MW capacity is started in a cold state with about 100t of oil, an oil gun is required to be started for stable combustion in low load, and the oil gun is required to be started for combustion supporting in furnace shutdown. Therefore, the fuel oil consumption of the boiler of the thermal power station is huge each year in the aspects of starting ignition, stopping combustion supporting and low-load stable combustion. With the increasingly tense global energy situation, energy strategies for energy conservation and emission reduction are actively implemented in all countries in the world; the improvement of 'energy conservation and emission reduction' aiming at the thermal power generation industry is urgent. According to the actual situation of the traditional thermal power station, the plasma ignition technology of replacing oil with coal is adopted to replace the fuel oil or gas ignition technology, and the plasma ignition technology is popularized vigorously, and according to statistics, the plasma ignition technology is applied to thousands of power boilers at present, and approximately 900 million tons of oil are saved annually.
In the design process of the plasma burner, a key parameter, namely the burning distance of the plasma burner (the burning distance of pulverized coal in the plasma burner, namely the distance from the tail end of a part of the plasma generator, which is arranged in the plasma burner, to the nozzle of the plasma burner) is generally determined according to the coal quality of the coal to be fired (namely the coal quality entering the power boiler) of a specific implementation project. After the design is finished, the plasma burner is produced and assembled in parts, and finally, the plasma burner is installed on a power boiler of an implementation project. Once an existing plasma burner is designed, manufactured and installed, the burning distance of the existing plasma burner is fixed, but in practical application, the coal quality of a power boiler entering the boiler often deviates from the original designed coal quality: when the dry ash-free base volatile component (Vdaf) of the coal entering the furnace is obviously increased, under the working condition that the combustion distance of the plasma combustor is fixed and not adjustable, the combustion intensity of the pulverized coal in the plasma combustor is greatly improved, so that the phenomena of overtemperature and burning loss of a combustion chamber in the plasma combustor are caused; on the contrary, when the dry ash-free base volatile matter (Vdaf) of the coal quality entering the boiler is obviously reduced, the combustion intensity of the pulverized coal in the plasma burner is greatly reduced, so that the intensity of the pulverized coal flame at the nozzle of the plasma burner is reduced, and the ignition effect of the power boiler is influenced.
Therefore, the device capable of adjusting the combustion distance of the plasma burner is developed, the plasma burner can be effectively helped to adapt to the fluctuation of the coal quality of the power boiler, the working condition adaptability of the plasma ignition technology is improved, and the device has important significance for the energy-saving and environment-friendly industry of China.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the technical problem and providing a plasma burner with adjustable burning distance can adjust burning distance according to the actual conditions of going into the stove coal quality to guarantee plasma burner's working effect.
The utility model adopts the technical proposal that: a plasma burner with adjustable burning distance comprises a burner outer cylinder, a burner inner cylinder, a plasma generator, a protective sleeve, a fixed pipe and a distance adjusting mechanism; the fixed pipe is arranged on the outer burner cylinder and penetrates through the cylinder wall of the outer burner cylinder; the protective sleeve and the fixed tube are coaxially arranged and penetrate through the fixed tube to enter the combustor; the front end of the plasma generator is embedded into the combustor through the protective sleeve, the end part of the front end of the plasma generator is flush with the end part of the protective sleeve, and the distance adjusting mechanism is used for adjusting the combustion distance of the plasma combustor.
Further, apart from adjustment mechanism including straight bobbin and flange, flange sets up the both ends at straight bobbin, and two flanges are used for being connected with protective sleeve and fixed pipe respectively.
Furthermore, the inner diameter of the straight bobbin in the distance adjusting mechanism is the same as that of the fixed bobbin, so that the straight bobbin is conveniently connected with the fixed bobbin.
Further, the length of the straight bobbin in the distance adjusting mechanism can be preset according to actual conditions.
Further, the distance adjusting mechanism is made of stainless steel materials.
Further, a plurality of distance adjusting mechanisms are provided; preferably, the length of the straight bobbin in each distance adjustment mechanism is different, so as to realize multipoint adjustment of the combustion distance adjustment.
Further, a supporting plate is arranged on the outer cylinder of the burner and used for bearing the rear end of the plasma generator, preferably, a roller is arranged at the bottom of the rear end of the plasma generator, and the plasma generator can slide on the supporting plate through the roller.
Further, the plasma generator extends into the protective sleeve and is sealed by a flexible sealing ring arranged between the plasma generator and the protective sleeve.
Further, the distance adjusting mechanism can be integrally formed; the left part and the right part are spliced to form the distance adjusting mechanism, the shapes of the left part and the right part are the same as those of two parts which are cut in half along the axial direction on the basis of the integrally formed distance adjusting mechanism, and the left part and the right part are hinged with each other, so that the distance adjusting mechanism is more convenient to replace or disassemble.
The utility model has the advantages that: the utility model provides a plasma burner is equipped with apart from adjustment mechanism, can adjust the combustion distance of during operation according to the actual conditions of going into the stove coal quality to guarantee plasma burner's normal operating.
Drawings
Fig. 1 is a schematic view of the embodiment 1 of the present invention when no distance adjustment mechanism is installed;
fig. 2 is a schematic view of embodiment 1 of the present invention with a distance adjustment mechanism installed;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
fig. 4 is a schematic view of a distance adjustment mechanism in embodiment 1 of the present invention;
in the figure: 1-combustor outer cylinder, 2-combustor inner cylinder, 3-plasma generator, 4-protective sleeve, 5-fixed tube, 6-distance adjusting mechanism, 61-straight tube, 62-connecting flange, 7-supporting plate and 8-sealing ring.
Detailed Description
To further explain the technical means adopted by the present invention to achieve the object, the following detailed description is given of the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Example 1
As shown in fig. 1 to 4, the present embodiment is a plasma burner with adjustable combustion distance, comprising a burner outer cylinder 1, a burner inner cylinder 2, a plasma generator 3, a protective sleeve 4, a fixed tube 5 and a distance adjusting mechanism 6; the fixed pipe 5 is arranged on the outer burner cylinder 1 and penetrates through the cylinder wall of the outer burner cylinder 1; the protective sleeve 4 and the fixed tube 5 are coaxially arranged, and penetrate through the fixed tube 5 to enter the combustor, and the end part of the protective sleeve 4 extends into the combustor inner barrel 2; the front end of the plasma generator 3 is embedded inside the burner through the protective sleeve 4, and the end of the front end of the plasma generator 3 is flush with the end of the protective sleeve 4. The plasma generator 3 is sealed by a flexible sealing ring 8 arranged between the protective sleeve 4 and the plasma generator when extending into the protective sleeve.
In this embodiment, the distance adjusting mechanism 6 includes a straight bobbin 61 and a connecting flange 62, and the distance adjusting mechanism 6 is integrally formed by a stainless steel material, the connecting flanges 62 are disposed at two ends of the straight bobbin 61, and the two connecting flanges 62 are respectively used for being connected with the protective sleeve 4 and the flange on the fixed pipe 5 in a matching manner. The inner diameter of the straight bobbin 61 in the distance adjusting mechanism 6 is the same as that of the fixed tube 5, thus facilitating the connection with the fixed tube 5. The length of the straight bobbin 61 in the distance adjusting mechanism 6 may be set in advance according to actual conditions.
Further, a supporting plate 7 is arranged on the burner outer cylinder 1, the supporting plate 7 is used for bearing the rear end of the plasma generator 3, a roller is arranged at the bottom of the rear end of the plasma generator 3, and the plasma generator 3 can slide on the supporting plate 7 through the roller.
In some embodiments, the distance adjusting mechanism 6 may be plural; the length of the straight tube 61 in each distance adjusting mechanism 6 is different, so that multi-point adjustment of the combustion distance adjustment is realized; in some embodiments, the distance adjustment mechanism 6 may be formed by splicing left and right members in a shape of two halves cut along the axial direction thereof on the basis of the distance adjustment mechanism 6 integrally formed, and the left and right members are hinged to each other, so that it is more convenient to replace or remove the distance adjustment mechanism 6 without completely withdrawing the plasma generator 3 from the burner.
The working process of the embodiment: when the dry ash-free base volatile matter index of the coal quality entering the furnace is obviously reduced and the plasma ignition effect is poor, a distance adjusting mechanism 6 with the length of d (shown in figure 2) is arranged on the plasma burner, the combustion distance of the plasma burner is increased from L1 to d and then changed into L2, and therefore the plasma ignition effect is enhanced; on the contrary, when the indication of dry ash-free volatile matter of the coal entering the furnace is obviously increased, the plasma ignition effect is too strong and the inside of the burner is easily over-temperature and burning loss is caused, the burning distance adjusting mechanism 6 of the plasma burner is removed, and the burning distance of the plasma burner can be recovered from L2 to L1 (as shown in figure 1), so that the normal operation of the plasma burner is ensured.
The technical solution of the present invention is not limited to the embodiments of the present invention disclosed, and any person skilled in the art can make some changes or modifications to the equivalent embodiments with equivalent changes when using the technical solution disclosed above without departing from the technical solution of the present invention, and any simple modification, equivalent changes and modifications made to the above embodiments by the technical solution of the present invention still belong to the technical solution of the present invention.
Claims (9)
1. A plasma burner with adjustable burning distance comprises a burner outer cylinder, a burner inner cylinder, a plasma generator, a protective sleeve and a fixed pipe; the fixed pipe is arranged on the outer burner cylinder and penetrates through the cylinder wall of the outer burner cylinder; the protective sleeve and the fixed tube are coaxially arranged and penetrate through the fixed tube to enter the combustor; plasma generator's front end passes through the inside of protective sleeve embedding combustor, and the tip parallel and level of the tip of plasma generator front end and protective sleeve, its characterized in that: the plasma burner is characterized by further comprising a distance adjusting mechanism, wherein the distance adjusting mechanism is used for adjusting the combustion distance of the plasma burner.
2. A combustion distance adjustable plasma burner as claimed in claim 1, wherein: the distance adjusting mechanism comprises a straight bobbin and connecting flanges, the connecting flanges are arranged at two ends of the straight bobbin, and the two connecting flanges are respectively used for being connected with the protective sleeve and the fixed pipe.
3. A combustion distance adjustable plasma burner as claimed in claim 2, wherein: the inner diameter of the straight bobbin in the distance adjusting mechanism is the same as that of the fixed bobbin.
4. A combustion distance adjustable plasma burner as claimed in claim 2, wherein: the distance adjusting mechanism is made of stainless steel.
5. A combustion distance adjustable plasma burner as claimed in claim 2, wherein: the distance adjusting mechanism is provided in plurality.
6. A combustion distance adjustable plasma burner as claimed in claim 5, wherein: the length of the straight bobbin in each distance adjusting mechanism is different.
7. A combustion distance adjustable plasma burner as claimed in claim 1, wherein: the outer cylinder of the burner is provided with a supporting plate, and the supporting plate is used for bearing the rear end of the plasma generator.
8. A combustion distance adjustable plasma burner as claimed in claim 7, wherein: the rear end of the plasma generator is provided with a roller, and the roller slides on the supporting plate.
9. A combustion distance adjustable plasma burner as claimed in claim 1, wherein: the plasma generator extends into the protective sleeve and is sealed by a flexible sealing ring arranged between the protective sleeve and the flexible sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220833353.XU CN218645560U (en) | 2022-04-12 | 2022-04-12 | Plasma burner with adjustable combustion distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220833353.XU CN218645560U (en) | 2022-04-12 | 2022-04-12 | Plasma burner with adjustable combustion distance |
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| Publication Number | Publication Date |
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| CN218645560U true CN218645560U (en) | 2023-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220833353.XU Active CN218645560U (en) | 2022-04-12 | 2022-04-12 | Plasma burner with adjustable combustion distance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116293786A (en) * | 2023-04-17 | 2023-06-23 | 鑫泓淼机械科技(山东)有限公司 | Contact type efficient electric energy converter |
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2022
- 2022-04-12 CN CN202220833353.XU patent/CN218645560U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116293786A (en) * | 2023-04-17 | 2023-06-23 | 鑫泓淼机械科技(山东)有限公司 | Contact type efficient electric energy converter |
| CN116293786B (en) * | 2023-04-17 | 2024-03-08 | 鑫泓淼机械科技(山东)有限公司 | Contact type efficient electric energy converter |
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