Incandescent light assembly and burner

Abstract

The utility model provides an incandescent light assembly and a burner. The incandescent light assembly comprises an incandescent light burner arranged at the tail end of the incandescent light assembly and comprising a mixing cavity and a flame stabilizing cover, the mixing cavity comprises at least a first section, a second section and a third section, the inner diameter of the second section is gradually changed and is smaller than the inner diameter of the first section and the inner diameter of the third section, and the flame stabilizing cover is arranged at the tail end of the incandescent light assembly. The first section, the second section and the third section are arranged from upstream to downstream so as to form a Venturi tube structure; the fuel gas supply system is used for supplying fuel gas to the second section of the mixing cavity; the air supply system supplies air to the first section of the mixing cavity and is mixed with the fuel gas from the fuel gas supply system in the mixing cavity to form mixed gas. The incandescent light assembly and the burner have the advantages of being simple in structure, easy to implement, convenient to use and the like.

Description

Technical Field

[0001] The present application relates to the field of chemical equipment. More specifically, the present application relates to a pilot light assembly that is designed to improve combustion efficiency and eliminate the possibility of flashback. The present application also relates to a burner that includes the pilot light assembly. Background Art

[0002] The pilot lamp is a constantly burning component in a burner, which can be used, for example, to ignite other working fluids or stabilize the combustion of the burner. Traditionally, the pilot lamp can use natural gas as fuel gas or fuel gas. With the increasing environmental protection requirements, more and more burners are beginning to use refinery fuel gas (RFG) and hydrogen as fuel gas for the pilot lamp to reduce carbon emissions. The content of gases such as hydrogen and methane in the fuel gas may be different for different operating conditions and different users. When the hydrogen content is too high (for example, the volume fraction of hydrogen is greater than 70%), the pilot lamp may be prone to backfire or flashback due to the faster mobility and faster combustion rate of hydrogen. When the heavy component content is high (for example, propane conditions), the pilot lamp may be prone to unexpected extinction. Therefore, there is a continuous demand in the art for pilot lamp designs with better gas adaptability. Utility Model Content

[0003] One object of the present application is to provide a pilot light assembly that can provide improved gas mixing capability and combustion reliability. Another object of the present application is to provide a burner that includes the pilot light assembly.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A long-lasting lamp assembly, comprising:

[0006] a pilot burner disposed at the distal end of the pilot assembly and comprising a mixing chamber and a flame stabilizing hood, wherein the mixing chamber comprises at least a first section, a second section, and a third section, the inner diameter of the second section being configured to change gradually and being smaller than the inner diameters of the first section and the third section, the first section, the second section, and the third section being arranged from upstream to downstream to form a venturi tube structure;

[0007] a gas supply system that supplies gas to the second section of the mixing chamber;

[0008] The air supply system supplies air to the first section of the mixing chamber, and mixes air with the gas from the gas supply system in the mixing chamber to form a mixed gas.

[0009] In the above pilot lamp assembly, optionally, the flame stabilizing hood is located downstream of the mixing chamber, and the downstream end of the mixing chamber is provided with one or more through holes so as to supply the mixed gas to the flame stabilizing hood.

[0010] In the above-mentioned pilot lamp assembly, optionally, the flame stabilizing cover includes:

[0011] at least one opening located at a downstream end of the flame-holding hood;

[0012] a plurality of flame stabilization holes, the flame stabilization holes being arranged on the side of the flame stabilization cover; and

[0013] A plurality of muffler holes are arranged on a side of the flame stabilization cover, are spaced apart from the flame stabilization holes, and are located downstream of the flame stabilization holes.

[0014] In the above-mentioned pilot lamp assembly, optionally, a plurality of flame stabilizing holes are further arranged downstream of the muffler hole;

[0015] Among them, the size of the flame stabilizing hole is larger than the size of the muffler hole.

[0016] In the above-mentioned ever-burning lamp assembly, optionally, the through hole, opening, flame-stabilizing hole and / or silencer hole has one of the following shapes: a circle, a part of a circle, an ellipse, a part of an ellipse, a triangle, a rectangle, a trapezoid, a prism, a regular pentagon, a regular hexagon or a combination thereof.

[0017] In the above-mentioned pilot light assembly, optionally, the gas supply system includes:

[0018] a gas gun including a gas nozzle at a downstream end, the gas nozzle being positioned proximate to the second section of the mixing chamber;

[0019] a gas gun base that is attached at the upstream end of the gas gun and includes internal threads; and

[0020] The air door regulating baffle is sleeved on the outer periphery of the gas gun base and comprises an external thread.

[0021] In the above-mentioned pilot light assembly, optionally, the air supply system includes:

[0022] A pilot lamp stand, the downstream end of which is attached to the mixing chamber of the pilot lamp burner and is constructed as a through-tubular structure, wherein a center positioning ring is arranged at the downstream of the pilot lamp stand;

[0023] a damper assembly coupled to the upstream end of the pilot light stand and comprising a damper stop, wherein the damper stop comprises an internal thread;

[0024] The gas gun extends through the damper assembly and the permanent lamp pole, the downstream end of the gas gun passes through the central positioning ring and is fixed in place, and the damper adjustment baffle and the damper limit part are adjustably connected together by threads.

[0025] In the above-mentioned eternal lamp assembly, optionally, the side of the damper assembly includes a plurality of air flow limiting holes, which are arranged in a plurality of rows and have one of the following shapes: a circle, a portion of a circle, an ellipse, a portion of an ellipse, a triangle, a rectangle, a trapezoid, a prism, a regular pentagon, a regular hexagon or a combination thereof.

[0026] In the above-mentioned ever-burning lamp assembly, optionally, it further includes:

[0027] A plurality of mounting plates, the mounting plates being sleeved on the exterior of the damper assembly and / or the pilot light pole;

[0028] an ignition electrode attached to one or more of the mounting plates and having its distal end positioned proximate an outer periphery of the flame stabilization hood; and an ionization flame detector attached to one or more of the mounting plates and having its distal end positioned proximate a downstream end of the flame stabilization hood;

[0029] Therein, one or more insulating ceramics are attached to the mounting plate, and the ignition electrode and / or the ion flame detector extend through the insulating ceramics.

[0030] A burner comprising:

[0031] refractory bricks, which surround the cavity located inside;

[0032] The pilot lamp assembly described above, wherein the pilot lamp assembly extends through the refractory bricks and the pilot lamp burner is positioned in the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will appreciate that these drawings are drawn only for the purpose of illustrating the preferred embodiments and, therefore, should not be construed as limiting the scope of the present application. Furthermore, unless otherwise noted, the drawings are intended only to conceptually represent the composition or configuration of the depicted objects and may contain exaggerated illustrations. The drawings are not necessarily drawn to scale.

[0034] Figure 1 This is a front view of an embodiment of the ever-burning lamp assembly of the present application.

[0035] Figure 2 yes Figure 1 A front view of the ever-burning lamp stand of the illustrated embodiment.

[0036] Figure 3 yes Figure 2 Top view of the illustrated embodiment.

[0037] Figure 4 yes Figure 1 Cross-sectional view of the pilot burner of the illustrated embodiment.

[0038] Figure 5 yes Figure 4 A cross-sectional view indicated by arrow A1-A1 in FIG.

[0039] Figure 6 is a cross-sectional view of another embodiment of a pilot lamp burner.

[0040] Figure 7 yes Figure 1 Cross-sectional view of the gas assembly of the illustrated embodiment.

[0041] Figure 8 yes Figure 1 A front view of the damper assembly of the illustrated embodiment. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present application.

[0043] First, it should be noted that directional terms such as top, bottom, upward, and downward, as used herein, are defined relative to the directions in the respective figures. These directions are relative and will vary depending on the position and state of the device. Therefore, these and other directional terms should not be construed as limiting.

[0044] In addition, it should be pointed out that for any single technical feature described or implied in the embodiments of this document or any single technical feature shown or implied in the accompanying drawings, these technical features (or their equivalents) can be further combined to obtain other embodiments not directly mentioned in this document.

[0045] It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

[0046] The pilot lamp assembly 10 of the present application may include a pilot lamp burner 200, a gas supply system, and an air supply system. The pilot lamp burner 200 may be located at the end of the pilot lamp assembly 10 and includes a mixing chamber 210 and a flame stabilization hood 220. The mixing chamber 210 includes a venturi structure. The gas supply system may supply gas to the mixing chamber 210. The air supply system may supply air to the mixing chamber 220. In the mixing chamber 210, the air and gas mix at the venturi structure to form a mixed gas.

[0047] Figure 1 The front view of an embodiment of the pilot lamp assembly 10 of the present application is shown. The pilot lamp assembly 10 may include: a pilot lamp stand 100, a pilot lamp burner 200, a gas assembly 300, a damper assembly 400, a gas inlet 500, an ignition electrode 600 and an ion flame detector 700. The pilot lamp assembly 10 may be generally tubular and extend in the axial direction AA. Figure 1 As shown, the working fluid including gas and air can generally move from bottom to top, and therefore, the bottom can be referred to as the upstream of the working fluid, and the top can be referred to as the downstream of the working fluid. In one embodiment, the gas inlet 500, the gas assembly 300, the damper assembly 400, the pilot lamp stand 100, and the pilot lamp burner 200 are arranged sequentially from upstream to downstream, and the ignition electrode 600 and the ion flame detector 700 can be arranged on both sides.

[0048] like Figure 2 and Figure 3 As shown, the pilot light pole 100 can be a generally tubular structure, for example, a through-tube structure. The downstream end of the pilot light pole 100 can be attached to the pilot light burner 200, and the upstream end can be attached to the damper assembly 400. A center positioning ring 110 can be arranged at the downstream of the pilot light pole 100. The center positioning ring 110 can be positioned at the center of the circular cross-section of the pilot light pole 100 and can be supported by a plurality of extensions 120. The extensions 120 can be evenly arranged at the periphery of the center positioning ring 110 and connected between the outer wall of the center positioning ring 110 and the inner wall of the pilot light pole 100. In one embodiment, the center positioning ring 110 can be sleeved on the outside of the gas gun 310 of the gas assembly 300, so that the gas nozzle 311 of the gas assembly 300 is fixed in place.

[0049] Figures 4 to 6 The pilot burner 200 of the present application is shown in various aspects. The pilot burner 200 can be disposed downstream of the pilot assembly 10 and attached to the end of the pilot pole 100. In one embodiment, the pilot burner 200 can include a mixing chamber 210 and a flame stabilization shield 220.

[0050] The mixing chamber 210 may include at least a first section 211, a second section 212, and a third section 213. As shown, the inner diameter of the second section 212 may be configured to gradually change and may be smaller than the inner diameters of the first section 211 and the third section 213. For example, the second section 212 may include a radially inwardly protruding shape to form a relatively slender waist. The first section 211, the second section 212, and the third section 213 may be arranged from upstream to downstream to form a Venturi tube structure. The upstream end of the mixing chamber 210 may be connected to the pilot light pole 100. For example, the inner surface of the first section 211 may include internal threads for threaded connection to the pilot light pole 100. The gas nozzle 311 of the gas gun 310 of the gas assembly 300 may be positioned proximate to the second section 212.

[0051] The downstream end of the mixing chamber 210 may include one or more through holes 214, and the through holes 214 may be connected to the space inside the flame stabilizing cover 220. In the illustrated embodiment, the downstream end of the mixing chamber 210 may include a Figure 5 A through hole 214 is shown at the center of the cross section, and a series of through holes 214 are arranged around the central through hole 214. Figure 4 As shown, the through hole 214 surrounding the center can be a through hole opened on the inclined wall.

[0052] The flame stabilization cover 220 may be sleeved onto the outside of the mixing chamber 210 and may extend downstream of the mixing chamber 210, such that at least a portion of the flame stabilization cover 220 is located downstream of the mixing chamber 210. The flame stabilization cover may include: a plurality of flame stabilization holes 221, a plurality of silencer holes 222, and at least one opening 223. The opening 223 may be located at the downstream end of the flame stabilization cover 220 and provide the primary combustion flame. The flame stabilization holes 221 and the silencer holes 222 may be arranged on the side of the flame stabilization cover 220.

[0053] Figure 4 and Figure 6 Two arrangements of the flame stabilizing holes 221 and the muffler holes 222 are shown. Figure 4 In the embodiment shown, a row of flame stabilizing holes 221 and a row of muffler holes 222 are arranged from upstream to downstream. Figure 6 In the embodiment shown, a row of flame stabilization holes 221, a row of silencer holes 222, and another row of flame stabilization holes 221 are arranged from upstream to downstream. The silencer holes and the flame stabilization holes can be spaced apart or staggered in the axial direction AA. In one embodiment, the size of the flame stabilization holes 221 can be larger than the size of the silencer holes 222. Figure 5 As shown, six flame stabilization holes 221 may be evenly arranged around the periphery of the flame stabilization cover 220 .

[0054] The various through holes, openings, flame stabilization holes and / or muffler holes described above may have one of the following shapes: circle, part of a circle, ellipse, part of an ellipse, triangle, rectangle, trapezoid, prism, regular pentagon, regular hexagon or a combination thereof.

[0055] Figure 7 The gas assembly 300 of the present application is shown. The gas assembly 300 is a major component of the gas supply system. The gas assembly 300 may include: a gas gun 310, a gas gun base 320, and a damper adjustment baffle. The gas gun 310 may be an elongated tubular structure and include a gas nozzle 311 located at the downstream end. The gas gun base 320 may be attached to the upstream end of the gas gun 310 and include internal threads for connection to the gas inlet 500. The damper adjustment baffle 330 may be sleeved on the outer periphery of the gas gun base 320 and include external threads for connection to the damper stop 420. The gas assembly 300 may extend through the damper assembly 400 and the pilot light pole 100, and the gas gun 310 may be sleeved in the center locating ring 110.

[0056] Figure 8 The damper assembly 400 of the present application is shown. The damper assembly 400 is a component of the air supply system, and the air supply system may also include the space inside the eternal light pole 100 in addition to the gas gun 310. The damper assembly 400 can be connected to the upstream end of the eternal light pole 100 and includes a body 410 and a damper stop 420. The downstream end of the body 410 has an external thread for connection to the upstream end of the eternal light pole 100. The damper stop 420 may include an internal thread for connection to the damper adjustment baffle 330, and the damper adjustment baffle 330 and the damper stop 420 are adjustable through the threaded connection to change the ability to deliver air. The side of the body 410 of the damper assembly 400 includes a plurality of air flow restriction holes 411. The air flow restriction holes 411 may be arranged in multiple rows and have one of the following shapes: circle, a portion of a circle, ellipse, a portion of an ellipse, triangle, rectangle, trapezoid, prism, regular pentagon, regular hexagon, or a combination thereof.

[0057] The mounting plate 430 can be sleeved on the body 410. In one embodiment, multiple mounting plates 430 can be sleeved on the body 410 of the damper assembly 400 and / or the exterior of the pilot light pole 100. One or more insulating ceramics can be attached to the mounting plate 430 to facilitate mounting the ignition electrode 600 and / or the ion flame detector 700. Figure 1As shown, the distal end of the ignition electrode 600 is positioned near the periphery of the flame stabilization shield 220, for example, near one of the flame stabilization holes 221. The distal end of the ionization flame detector 700 may be positioned near the downstream end of the flame stabilization shield 220, for example, near the opening 223. The ignition electrode 600 provides the function of igniting the flame, and the ionization flame detector 700 may continuously monitor the flame.

[0058] During use, air is provided by an air supply system. Air can enter from the damper assembly 400, pass through the pilot light pole 100, and reach the first section 211 of the mixing chamber 210. Gas is provided by a gas supply system. Gas can be connected from the gas inlet 500, pass through the gas gun base 320, the gas gun 310, and the gas nozzle 311, and reach the second section 212 of the mixing chamber 210. In the second section 212, the air and gas are mixed in the venturi structure and continue to travel to the third section 213 to form a mixed gas. The mixed gas enters the flame stabilizing hood 220 through the through hole 214 and is ignited by the ignition electrode 600 near the flame stabilizing hole 221. The light components or light components in the mixed gas tend to burn first, such as in the upstream portion. The heavy components or heavy components in the mixed gas tend to burn later, such as in the downstream portion. The flame stabilizing holes 221 and the opening 223 of the flame stabilizing cover 220 of the present application provide a stable combustion mechanism, and the muffler holes 222 can effectively eliminate the noise generated by combustion.

[0059] The fuel gas of the present application can be a variety of components, including, for example, refinery gas and hydrogen, and the refinery gas and hydrogen can have different volume ratios or different molar ratios. Because the gases are mixed in the mixing chamber 210 near the combustion location, the pilot light assembly 10 of the present application can effectively reduce flashback caused by hydrogen combustion and effectively reduce the occurrence of combustion extinction.

[0060] The present application also relates to a burner. The burner may include refractory bricks and the pilot lamp assembly 10 described above. The refractory bricks may enclose a cavity within. The pilot lamp assembly 10 may extend through the refractory bricks, and a pilot lamp burner 200 may be positioned within the cavity. Gas and air may be supplied to the pilot lamp assembly 10 and combusted at the pilot lamp burner 200 to produce a flame.

[0061] The eternal lamp assembly and burner of the present application have the advantages of being simple, reliable, easy to implement, and convenient to use, and can adapt to fuel gases with different ratios of hydrogen and methane, thereby improving the safety and reliability of combustion.

[0062] This specification discloses the present application with reference to the accompanying drawings and also enables those skilled in the art to practice the present application, including making and using any device or system, selecting suitable materials, and using any combined methods. The scope of the present application is defined by the claimed technical solution and includes other examples that occur to those skilled in the art. As long as such other examples include structural elements that are not different from the literal language of the claimed technical solution, or such other examples include equivalent structural elements that are not substantially different from the literal language of the claimed technical solution, such other examples should be deemed to be within the scope of protection determined by the claimed technical solution.

Claims

1. A long-lasting lamp assembly, characterized in that: include: a pilot lamp burner disposed at the distal end of the pilot lamp assembly and comprising a mixing chamber and a flame stabilizing hood, wherein the mixing chamber comprises at least a first section, a second section, and a third section, the inner diameter of the second section being configured to change gradually and being smaller than the inner diameters of the first section and the third section, the first section, the second section, and the third section being arranged from upstream to downstream to form a Venturi tube structure; a gas supply system for supplying gas to the second section of the mixing chamber; An air supply system supplies air to the first section of the mixing chamber, and mixes air with the gas from the gas supply system in the mixing chamber to form a mixed gas.

2. The ever-burning lamp assembly according to claim 1, characterized in that: The flame-stabilizing hood is located downstream of the mixing chamber, and one or more through holes are provided at the downstream end of the mixing chamber so as to supply the mixed gas to the flame-stabilizing hood.

3. The ever-burning lamp assembly according to claim 2, characterized in that: The flame stabilizing hood comprises: at least one opening located at a downstream end of the flame-holding hood; a plurality of flame stabilization holes, the flame stabilization holes being arranged on a side surface of the flame stabilization cover; and A plurality of muffler holes are arranged on a side surface of the flame stabilization cover, are spaced apart from the flame stabilization holes, and are located downstream of the flame stabilization holes.

4. The ever-burning lamp assembly according to claim 3, characterized in that: A plurality of flame stabilizing holes are further arranged downstream of the muffler hole; Wherein, the size of the flame stabilizing hole is larger than the size of the muffler hole.

5. The ever-burning lamp assembly according to claim 3, characterized in that: The through hole, the opening, the flame stabilizing hole and / or the muffler hole have one of the following shapes: a circle, a part of a circle, an ellipse, a part of an ellipse, a triangle, a rectangle, a trapezoid, a prism, a regular pentagon, a regular hexagon or a combination thereof.

6. The ever-burning lamp assembly according to claim 1, characterized in that: The gas supply system comprises: a gas gun including a gas nozzle at a downstream end, the gas nozzle being positioned proximate the second section of the mixing chamber; a gas gun base attached at the upstream end of the gas gun and including internal threads; and The air door regulating baffle is sleeved on the outer periphery of the gas gun base and comprises an external thread.

7. The ever-burning lamp assembly according to claim 6, characterized in that: The air supply system comprises: a pilot lamp stand, the downstream end of which is attached to the mixing chamber of the pilot lamp burner and is constructed as a through-tubular structure, wherein a center positioning ring is arranged at the downstream of the pilot lamp stand; a damper assembly coupled to the upstream end of the steady light pole and comprising a damper stop, wherein the damper stop comprises an internal thread; Wherein, the gas gun extends through the damper assembly and the permanent lamp pole, the downstream end of the gas gun passes through the central positioning ring and is fixed in place, and the damper adjustment baffle and the damper limit part are adjustably connected together by threads.

8. The ever-burning lamp assembly according to claim 7, characterized in that: The side surface of the damper assembly includes a plurality of air flow restriction holes, which are arranged in a plurality of rows and have one of the following shapes: a circle, a portion of a circle, an ellipse, a portion of an ellipse, a triangle, a rectangle, a trapezoid, a prism, a regular pentagon, a regular hexagon, or a combination thereof.

9. The self-lighting lamp assembly according to claim 7, characterized in that: Also includes: A plurality of mounting plates, wherein the mounting plates are sleeved on the outside of the damper assembly and / or the permanent lamp pole; an ignition electrode attached to one or more of the mounting plates and having a distal end positioned proximate to an outer periphery of the flame-holding hood; as well as an ion flame detector attached to one or more of the mounting plates and having a distal end positioned proximate a downstream end of the flame-holding hood; Wherein, one or more insulating ceramics are attached to the mounting plate, and the ignition electrode and / or the ion flame detector extend through the insulating ceramics.

10. A burner, characterized in that: include: refractory bricks, which surround the cavity located inside; The ever-burning lamp assembly according to any one of claims 1 to 9, wherein: The pilot lamp assembly extends through the refractory bricks, and the pilot lamp burner is positioned in the cavity.

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