Ignition starting device for w-flame boiler

Abstract

The present application relates to a boiler and boiler energy saving technical field, concretely is a kind of W flame boiler ignition starting device, the W flame boiler ignition starting device of the present application includes furnace shell, burner, coal mill, fan component and heating component, the furnace shell has accommodating cavity, the burner is connected with the furnace shell, and the output end of the burner is communicated with the accommodating cavity, the heating component includes first tube, second tube and igniter, the first tube has flow-through passage, the second tube outlet is arranged in flow-through passage, the fan component output end is communicated with the import of the first tube, the outlet of the first tube is connected with the burner to pass into primary air to the accommodating cavity, the igniter is arranged in first tube, and the igniter is arranged between the outlet of the first tube and the outlet of the second tube.The W flame boiler ignition starting device of the present application can improve the heating efficiency of primary air, improve the stability of boiler operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of boiler and boiler energy-saving technology, in particular to a W flame boiler ignition starting device. BACKGROUND

[0002] A W flame boiler ignition starting device ignites a large oil gun first before the early stage of boiler starting, preheats the combustion area in the furnace to the temperature required for the ignition of coal powder, then puts in coal powder combustion, the boiler is heated and pressurized until the boiler reaches a certain load, the boiler combustion is stable, the large oil gun is removed, the primary air is passed into the coal mill, and then the coal powder from the coal mill is passed into the burner to ignite. However, the primary air needs to reach a preset temperature. In the related technology, the waste heat of the waste heat boiler is used to heat the primary air, but the heating efficiency is low and the heating time is long. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the embodiments of the present application propose a W flame boiler ignition starting device, which can improve the heating efficiency of the primary air and improve the stability of the boiler operation.

[0004] The W flame boiler ignition starting device of the embodiments of the present application comprises a furnace shell and a burner, the furnace shell has a containing cavity, the burner is connected with the furnace shell, and the output end of the burner is in communication with the containing cavity; a coal mill, a fan component and a heating component, the heating component comprises a first pipe, a second pipe and an igniter, the first pipe has a flow passage, the outlet of the second pipe is arranged in the flow passage, the output end of the fan component is in communication with the inlet of the first pipe, the outlet of the first pipe is connected with the burner to pass the primary air into the containing cavity, the igniter is arranged in the first pipe, and the igniter is arranged between the outlet of the first pipe and the outlet of the second pipe.

[0005] The W flame boiler ignition starting device proposed by the embodiments of the present application can improve the heating efficiency of the primary air and improve the stability of the boiler operation.

[0006] In some embodiments, the W flame boiler ignition starting device further comprises an oil storage tank, an oxygen storage tank and a third pipe, the second pipe comprises a first section, a second section and a third section which are connected in sequence and have a radial size decreasing in sequence, the inlet of the first section is in communication with the outlet of the oil storage tank,

[0007] the outlet of the first section is in communication with the inlet of the second section, the outlet of the second section is in communication with the inlet of the third section, the inlet of the third pipe is in communication with the oxygen storage tank, and the outlet of the third pipe is in communication with the second section.

[0008] In some embodiments, the W flame boiler ignition starting device further comprises a first flow valve and a second flow valve, one end of the first flow valve is connected with the oil storage tank, and the other end of the first flow valve is in communication with the outlet of the first section.

[0009] In some embodiments, the W flame boiler ignition starting device further comprises an oxygen generator, one end of the oxygen generator is connected with the oxygen storage tank, and the other end of the oxygen generator is in communication with the inlet of the third pipe.

[0010] In some embodiments, the W flame boiler ignition starting device, the burner comprises a fourth pipe, a fifth pipe, a sixth pipe and a flow guide cover, the inlet of the fourth pipe is in communication with the outlet of the coal mill, the inlet of the fourth pipe is provided with a flow guide cover, the outlet of the fourth pipe is in communication with the inlet of the fifth pipe, the outlet of the fourth pipe is in communication with the outlet of the fifth pipe, and the fourth pipe and the fifth pipe are coaxially arranged, and the inlet of the sixth pipe is in communication with the oil storage tank.

[0011] In some embodiments, the burner further comprises a flow guide vane, the flow guide vane is arranged in the fourth pipe, and the flow guide vane is located between the outlet of the fourth pipe and the flow guide cover.

[0012] In some embodiments, the number of the sixth pipes is multiple, and the multiple sixth pipes are arranged at intervals in the circumferential direction of the fourth pipe.

[0013] In some embodiments, the W flame boiler ignition starting device further comprises a seventh pipe, the sixth pipe comprises a pipe body and a separation component, the separation component is arranged in the pipe body, and the seventh pipe is arranged between the separation component and the outlet of the pipe body.

[0014] In some embodiments, the burner further comprises an oil gun, one end of the oil gun is in communication with the oil storage tank, and the other end of the oil gun is adapted to extend into the seventh pipe.

[0015] In some embodiments, the W flame boiler ignition starting device further comprises a first temperature monitoring component, and the first temperature monitoring component is arranged at the outlet of the heating component. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of a W flame boiler ignition starting device according to an embodiment of the present application.

[0017] Figure 2 is a schematic view of a burner according to an embodiment of the present application.

[0018] Figure 3 is a schematic view of a fifth pipe according to an embodiment of the present application.

[0019] Figure 4 is a schematic view of a heating component of an embodiment of the present application.

[0020] Reference signs:

[0021] furnace shell 1, coal mill 2, fan component 3,

[0022] heating component 4, first pipe 41, second pipe 42, first section 421, second section 422, third section 423, igniter 43,

[0023] burner 5, fourth pipe 51, fifth pipe 52, sixth pipe 53, flow guide cover 54, flow guide blade 55, seventh pipe 56,

[0024] first temperature monitoring component 6, second temperature monitoring component 7, first flow valve 8, second flow valve 9, oil storage tank 10, oxygen storage tank 20, third pipe 30, oxygen generator 40. DETAILED DESCRIPTION

[0025] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0026] A W flame boiler ignition starting device of an embodiment of the present application includes a furnace shell 1, a burner 5, a coal mill 2, a fan component 3, and a heating component 4, the furnace shell 1 has a containing cavity, the burner 5 is connected with the furnace shell 1, and an output end of the burner 5 is communicated with the containing cavity, the heating component 4 includes a first pipe 41, a second pipe, and an igniter 43, the first pipe 41 has a flow passage, an outlet of the second pipe is arranged in the flow passage, an output end of the fan component 3 is communicated with an inlet of the first pipe 41, an outlet of the first pipe 41 is connected with the coal mill 2 to introduce primary air into the containing cavity, the igniter 43 is arranged in the first pipe 41, and the igniter 43 is arranged between the outlet of the first pipe 41 and the outlet of the second pipe.

[0027] Specifically, as Figures 1 to 4The inlet of the heating component 4 is connected with the outlet of the fan component 3, the heating component 4 is suitable for heating the air input by the fan component 3, that is, the primary air is heated by the heating component 4, and the outlet of the heating component 4 is connected with one end of the coal mill 2, the outlet of the coal mill 2 is communicated with the burner 5, the primary air is mixed with the pulverized coal in the coal mill 2, and the burner 5 is suitable for igniting the pulverized coal. The first pipe 41 is a hollow pipe, the inlet of the first pipe 41 is communicated with the outlet of the fan component 3, the outlet of the first pipe 41 is communicated with the inlet of the coal mill 2, the radial dimension of the second pipe is smaller than that of the first pipe 41, and the outlet of the second pipe is arranged in the first pipe 41, the inlet of the second pipe extends out of the first pipe 41, and the inlet of the second pipe is suitable for being communicated with fuel oil. The fuel oil is suitable for being combusted between the outlet of the second pipe and the flow channel of the first pipe 41 to heat the primary air. The first pipe 41 is provided with an igniter 43, and the igniter 43 is suitable for igniting the oil liquid between the outlet of the first pipe 41 and the outlet of the second pipe to heat the primary air.

[0028] The W-flame boiler ignition starting device provided by the embodiment of the present application is provided with the heating component 4, the heating component 4 is suitable for heating the primary air, and the pulverized coal in the coal mill 2 is heated and dried, so that the starting efficiency of the boiler is improved.

[0029] In some embodiments, the W-flame boiler ignition starting device further comprises an oil storage tank 10, an oxygen storage tank 20 and a third pipe 30, the second pipe comprises a first section 421, a second section 422 and a third section 423 which are sequentially connected and have sequentially decreasing radial dimensions, the inlet of the first section 421 is communicated with the outlet of the oil storage tank 10, the outlet of the first section 421 is communicated with the inlet of the second section 422, the outlet of the second section 422 is communicated with the inlet of the third section 423, the inlet of the third pipe 30 is communicated with the oxygen storage tank 20, and the outlet of the third pipe 30 is communicated with the second section 422.

[0030] Specifically, as Figures 1 to 4As shown, the outlet of the oil tank 10 is communicated with the inlet of the first section 421, the outlet of the first section 421 is communicated with the inlet of the second section 422, the outlet of the second section 422 is communicated with the inlet of the third section 423, the inlet of the third tube 30 is communicated with the outlet of the oxygen tank 20, one end of the third tube 30 extends into the first tube 41 and the second section 422 in sequence, i.e. the outlet of the third tube 30 is located in the second section 422, the oil and oxygen are mixed in the second tube, the third section 423 is provided with an igniter 43, the igniter 43 is adapted to ignite the mixture of oil and oxygen in the third section 423, thereby heating the primary air, further, the W-flame boiler ignition starting device further comprises a pump, one end of the pump is connected with the oil tank 10, the other end of the pump is communicated with the second section 422 to pump oil into the second section 422, the radial dimensions of the first section 421, the second section 422 and the third section 423 gradually decrease, thereby causing a vacuum area at the communication between the first section 421 and the second section 422 due to the rapid ejection of oil, the oxygen in the third tube 30 is sucked into the vacuum area under the action of pressure and mixed with the oil, thereby improving the mixing effect of oil and oxygen and the combustion effect of oil in the third section 423.

[0031] Further, the W-flame boiler ignition starting device further comprises a first flow valve 8 and a second flow valve 9, one end of the first flow valve 8 is connected with the oil tank 10, the other end of the first flow valve 8 is communicated with the outlet of the first section 421. The first flow valve 8 is adapted to adjust the flow of oil, for example, when it is needed to increase the output power of the heating component 4 in the third section 423, the flow of oil can be increased by using the first flow adjusting valve to increase the output power of the heating component 4, the second flow adjusting valve is adapted to increase the flow of oxygen, when it is found that the combustion in the second section 422 and the third section 423 of the heating component 4 is insufficient, the flow of oxygen is increased to increase the output power of the heating component 4.

[0032] Further, the W-flame boiler ignition starting device further comprises an oxygen generator 40, one end of the oxygen generator 40 is connected with the oxygen tank 20, the other end of the oxygen generator 40 is communicated with the inlet of the third tube 30. The oxygen generator 40 is adapted to increase the content of oxygen in the gas output by the oxygen tank 20, thereby avoiding the decrease of the output power of the heating component 4 due to the low content of oxygen and improving the stability and safety of the W-flame boiler ignition starting device.

[0033] In some embodiments, the burner 5 comprises a fourth tube 51, a fifth tube 52, a sixth tube 53 and a flow guide cover 54, the inlet of the fourth tube 51 is communicated with the outlet of the coal mill 2, the inlet of the fourth tube 51 is provided with the flow guide cover 54, the outlet of the fourth tube 51 is communicated with the inlet of the fifth tube 52, the outlet of the fourth tube 51 is communicated with the outlet of the fifth tube 52, and the fourth tube 51 and the fifth tube 52 are coaxially arranged, the inlet of the sixth tube 53 is communicated with the oil tank 10.

[0034] Specifically, as shown in Figures 1 to 4 The fourth pipe 51 is provided with a flow guide cover 54, and the cross section of the flow guide cover 54 is inverted V-shaped. When the mixed flow of the primary air and the pulverized coal enters the fourth pipe 51, a circumferential thick pulverized coal flow with a middle thin part is formed. The fifth pipe 52 is coaxially arranged with the fourth pipe 51, that is, the concentration of the pulverized coal in the fifth pipe 52 is less than that in the sixth pipe 53, so as to separate the pulverized coal in concentration. The sixth pipe 53 is provided with an ignition device. The ignition device in the sixth pipe 53 ignites the pulverized coal. The outlet of the sixth pipe 53 and the outlet of the fifth pipe 52 extend into the furnace shell 1. When the pulverized coal or the flue gas burned in the sixth pipe 53 enters the furnace shell 1, the pulverized coal output by the fifth pipe 52 is ignited, so as to reduce the ignition difficulty of the boiler and improve the stability and safety of the W-flame boiler ignition starting device.

[0035] In some embodiments, the burner 5 further comprises a flow guide vane 55 arranged in the fourth pipe 51, and the flow guide vane 55 is located between the outlet of the fourth pipe 51 and the flow guide cover 54.

[0036] Specifically, as shown in Figures 1 to 4 After the primary air and pulverized coal flow passes through the flow guide cover 54, it continues to flow downward through the flow guide vane 55. The first thin-phase pulverized coal flow in the middle part rotates after flowing through the flow guide vane 55. Under the action of centrifugal force, the pulverized coal particles move to the outside of the pipeline, further strengthening the concentration separation effect, forming a circumferential thick and middle thin pulverized coal flow distribution state, that is, further separating the pulverized coal in concentration, facilitating the staged combustion of the pulverized coal, improving the combustion effect of the pulverized coal, and further improving the ignition efficiency of the boiler.

[0037] In some embodiments, the number of the sixth pipes 53 is multiple, and the multiple sixth pipes 53 are arranged at intervals in the circumferential direction of the fourth pipe 51.

[0038] Specifically, as shown in Figures 1 to 4 The multiple sixth pipes 53 are arranged at intervals in the circumferential direction of the fourth pipe 51, and the extension direction of the sixth pipe 53 and the extension direction of the fourth pipe 51 are provided with a preset included angle. Under the action of centrifugal force, the thick-phase pulverized coal in the pulverized coal flow enters the sixth pipe 53. By arranging multiple sixth pipes 53, the ignition efficiency of the burner 5 can be improved, and the stability and safety of the boiler can be improved.

[0039] In some embodiments, the W-flame boiler ignition starting device further comprises a seventh pipe 56. The sixth pipe 53 comprises a pipe body and a separation component arranged in the pipe body. The seventh pipe 56 is arranged between the separation component and the outlet of the pipe body.

[0040] Specifically, as shown in Figures 1 to 4As shown, the sixth pipe 53 is a hollow pipe, the seventh pipe 56 is connected with the sixth pipe 53, and a flow space is arranged between the pipe body and the seventh pipe 56, the seventh pipe 56 is a hollow pipe, the separation component separates the concentrated phase of the coal powder in the sixth pipe 53 into a middle concentrated phase and a peripheral thin phase, the middle concentrated phase of the coal powder enters the seventh pipe 56, and the peripheral thin phase of the coal powder enters the flow space, and then the ignition device in the seventh pipe 56 ignites the middle concentrated phase of the coal powder, the combustion of the middle concentrated phase of the coal powder ignites the peripheral thin phase of the coal powder, and then the combustion of the coal powder in the sixth pipe 53 is completed, and the combustion efficiency of the boiler is improved.

[0041] Further, the outlet of the oxygen storage tank extends through the sixth pipe 53 and into the seventh pipe 56, and then the combustion of the coal powder in the seventh pipe 56 is improved, the outlet of the oxygen storage tank also extends into the sixth pipe 53, and the oxygen is sprayed at the outlet of the seventh pipe 56, and then the combustion of the coal powder in the flow space and at the outlet of the seventh pipe 56 is improved, the flue gas or the combusted coal powder at the outlet of the sixth pipe 53 ignites the coal powder at the outlet of the fifth pipe 52, and then the staged combustion of the coal powder is realized, and the ignition efficiency of the boiler is improved.

[0042] Further, the burner 5 further comprises an oil gun, one end of the oil gun is communicated with the oil storage tank 10, and the other end of the oil gun is adapted to extend into the seventh pipe 56. The inlet of the oil gun is communicated with the oil storage tank 10, the other end of the oil gun extends into the seventh pipe 56, the oil liquid sprayed from the outlet of the oil gun is mixed with the oxygen sprayed from the outlet of the oxygen storage tank in the seventh pipe 56, and the end of the oil gun extending into the seventh pipe 56 further has an ignition device, so as to ignite the oil liquid in the seventh pipe 56, and then the coal powder is ignited, and the combustion effect of the W flame boiler ignition starting device is improved.

[0043] Further, the W flame boiler ignition starting device further comprises a first temperature monitoring component 6 arranged at the outlet of the heating component 4. The first temperature monitoring component 6 is adapted to monitor whether the temperature of the primary air after being heated by the heating component 4 reaches a preset temperature, and the W flame boiler ignition starting device further comprises a second temperature monitoring component 7 arranged at the outlet of the furnace shell 1, so as to monitor whether the furnace shell 1 and the containing cavity reach a preset temperature, and then the stability and safety of the boiler are improved.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] Furthermore, the terms "first", "second", or the like are used merely to describe corresponding features, and do not imply or connote relative importance or a quantity of the specified features. Thus, a feature defined with "first" or "second" can include at least one of the feature. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless explicitly specified and limited otherwise.

[0046] In the present application, unless explicitly specified and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless explicitly defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the present application, unless explicitly specified and limited otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples, without contradiction.

[0049] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A W-flame boiler ignition and start-up device, characterized in that, include: A furnace shell and a burner, wherein the furnace shell has a receiving cavity, the burner is connected to the furnace shell, and the output end of the burner is in communication with the receiving cavity; A coal mill, a blower assembly, and a heating assembly, wherein the heating assembly includes a first pipe, a second pipe, and an igniter; the first pipe has a flow channel; the outlet of the second pipe is arranged within the flow channel; the output end of the blower assembly is connected to the inlet of the first pipe; the outlet of the first pipe is connected to the burner to introduce primary air into the receiving cavity; and the igniter is arranged inside the first pipe and between the outlet of the first pipe and the outlet of the second pipe. It also includes an oil storage tank, an oxygen storage tank, and a third pipe. The second pipe comprises a first section, a second section, and a third section connected in sequence with their radial dimensions decreasing sequentially. The inlet of the first section is connected to the outlet of the oil storage tank. The outlet of the first section is connected to the inlet of the second section, the outlet of the second section is connected to the inlet of the third section, the inlet of the third pipe is connected to the oxygen storage tank, and the outlet of the third pipe is connected to the second section.

2. The W-flame boiler ignition and start-up device according to claim 1, characterized in that, It also includes a first flow valve and a second flow valve. One end of the first flow valve is connected to the oil storage tank, and the other end of the first flow valve is connected to the first section inlet.

3. The W-flame boiler ignition and start-up device according to claim 2, characterized in that, It also includes an oxygen generator, one end of which is connected to the oxygen storage tank, and the other end of which is connected to the third pipe inlet.

4. The W-flame boiler ignition and start-up device according to claim 1, characterized in that, The burner includes a fourth tube, a fifth tube, a sixth tube, and a flow guide cover. The inlet of the fourth tube is connected to the outlet of the coal mill. The inlet of the fourth tube is provided with a flow guide cover. The outlet of the fourth tube is connected to the inlet of the fifth tube. The outlet of the fourth tube is connected to the inlet of the sixth tube. The fourth tube and the fifth tube are arranged coaxially. The inlet of the sixth tube is connected to the oil storage tank.

5. The W-flame boiler ignition and start-up device according to claim 4, characterized in that, The burner also includes guide vanes arranged inside the fourth tube, and the guide vanes are located between the outlet of the fourth tube and the guide cover.

6. The W-flame boiler ignition and start-up device according to claim 4, characterized in that, There are multiple sixth tubes, which are arranged at intervals around the fourth tube.

7. The W-flame boiler ignition and start-up device according to claim 5, characterized in that, It also includes a seventh tube, wherein the sixth tube includes a tube body and a separation component, the separation component is arranged inside the tube body, and the seventh tube is arranged between the separation component and the outlet of the tube body.

8. The W-flame boiler ignition and start-up device according to claim 5, characterized in that, The burner also includes an oil gun, one end of which is connected to the oil storage tank, and the other end of which is adapted to extend into the seventh pipe.

9. The W-flame boiler ignition and start-up device according to claim 1, characterized in that, It also includes a first temperature monitoring component, which is located at the outlet of the heating component.

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