Self-absorption combustion-supporting eternal flame nozzle

Abstract

The utility model relates to a self-absorption combustion-supporting long open fire nozzle, which belongs to the field of combustors and comprises a main gas pipe and a connecting nozzle, the connecting nozzle is connected with one end of the main gas pipe, an inner spray pipe is arranged in the main gas pipe, one end of the inner spray pipe is positioned in the main gas pipe, the other end of the inner spray pipe is positioned in the connecting nozzle, and a combustion-supporting hole is formed in the connecting nozzle. Fuel gas in the main gas pipe flows into the connecting spray head through the inner spray pipe, the Venturi effect is generated, the flow speed of the fuel gas is increased, external air can be sucked into the connecting spray head through the combustion-supporting holes, the combustion efficiency is high, the semi-premixed combustion effect is achieved, and the ignition efficiency of the long open fire spray head is improved.

Description

Technical Field

[0001] The present application relates to the field of burners, and in particular to a self-priming, combustion-supporting, long-open-flame nozzle. Background Art

[0002] The stable combustion of gas fuel is particularly critical to the safety of burner design. It plays a certain role in affecting the combustion quality, combustion efficiency and emission level of flue gas and low-valent oxides of nitrogen in the combustion system, and is a key factor in ensuring the safety of heating in the furnace. Pilot flame combustion is one of the important technical means in the design safety of burners. However, the ignition frequency of ordinary pilot flame nozzles is slow, it is not easy to ignite, and the flame is unstable or easy to extinguish after ignition. Utility Model Content

[0003] In order to improve the above problems, the present application provides a self-priming and combustion-supporting long-open flame nozzle.

[0004] The self-priming combustion-supporting long-open flame nozzle provided in this application adopts the following technical solution:

[0005] A self-priming combustion-supporting long-open flame nozzle comprises a main air pipe and a connecting nozzle, wherein the connecting nozzle is connected to one end of the main air pipe, an inner nozzle is arranged in the main air pipe, one end of the inner nozzle is located in the main air pipe, and the other end is located in the connecting nozzle, and a combustion-supporting hole is opened on the connecting nozzle.

[0006] By adopting the above technical solution, the gas in the main gas pipe flows through the inner nozzle to the connecting nozzle, producing a Venturi effect, accelerating the gas flow rate, and sucking the outside air into the connecting nozzle through the combustion-supporting holes. The combustion efficiency is high, and there is a semi-premixed combustion effect, which improves the ignition efficiency of the long-fire nozzle and reduces the possibility of flame instability or flameout after ignition.

[0007] Preferably, the inner nozzle includes a first section and a second section, the first section and the second section are fixedly connected, the first section is located in the main air pipe, the outer wall of the first section is connected to the inner wall of the main air pipe, the second section is located in the connecting nozzle, and an auxiliary gap is formed between the second section and the inner wall of the connecting nozzle.

[0008] By adopting the above technical solution, when the inner nozzle needs to be installed, the first section is moved to connect the first section and the inner wall of the main air pipe, thereby realizing the installation of the inner nozzle; the auxiliary gap can provide space for external air to enter the connecting nozzle.

[0009] Preferably, a support frame is sleeved on the main gas pipe, an ignition electrode is arranged on the support frame, a first limiting hole and a second limiting hole are opened on the support frame, the first limiting hole is for the ignition electrode to pass through, and the second limiting hole is for the main gas pipe to pass through.

[0010] By adopting the above technical scheme, the installation of the main gas pipe and the burner is facilitated by the setting of the support frame; the connection of the nozzle to generate flame is facilitated by the setting of the ignition electrode; the first limiting hole can limit the ignition electrode, and the second limiting hole can limit the main gas pipe, which facilitates the installation of the ignition electrode and the main gas pipe.

[0011] Preferably, the support frame is provided with a first bolt hole and a second bolt hole, both of which are for bolts to be screwed in, the first bolt hole is connected to the first limiting hole, and the second bolt hole is connected to the second limiting hole.

[0012] By adopting the above technical solution, the operator can screw the bolt into the first bolt hole and rotate it until it abuts against the ignition electrode, so that the ignition electrode is located and fixed in the first limiting hole, thereby realizing the installation of the ignition electrode; the operator can screw the bolt into the second bolt hole and rotate it until it abuts against the main air pipe, so that the main air pipe is located and fixed in the first limiting hole, thereby realizing the installation of the main air pipe.

[0013] Preferably, the first subsection and the main air pipe are detachably connected.

[0014] By adopting the above technical solution, the operator can install the first section into the main air pipe to realize the installation of the inner nozzle, and can also disassemble the first section and the main air pipe to facilitate the replacement of the inner nozzle.

[0015] Preferably, a positioning ring block is fixedly connected inside the main air pipe, a positioning block is fixedly connected to the positioning ring block, and a positioning groove is provided on the first subsection for the positioning block to be embedded in the positioning groove.

[0016] By adopting the above technical solution, when the first branch needs to be installed, the operator can move the first branch into the main air pipe and move it until it abuts against the positioning ring block. At this time, the positioning block is embedded in the positioning groove, and the positioning ring block can limit the movement of the first branch. The positioning block can further limit the first branch, which is convenient for the fixed installation of the first branch and the main air pipe.

[0017] Preferably, a fixing ring block is provided on the first sub-portion, the fixing ring block is threadedly connected to the inner wall of the main air pipe, and the fixing ring block abuts against the first sub-portion.

[0018] By adopting the above technical solution, after the first division and the positioning ring block are abutted, the operator can screw in the fixing ring block, and the fixing ring block can be rotated until it abuts against the first division. The fixing ring block can fix the first division again, so that the first division is located and fixed in the main air pipe, thereby realizing the installation of the first division and the main air pipe.

[0019] Preferably, a guide sleeve is provided on the second section, the inner wall of the guide sleeve is threadedly connected to the outer wall of the second section, and the outer diameter of the guide sleeve is gradually reduced along its axial direction toward the end connected to the nozzle.

[0020] By adopting the above technical solution, the operator can rotate the guide sleeve to the second section. When the outside air enters the connecting nozzle, the guide sleeve can guide the air, thereby improving the ignition efficiency of the long-fire nozzle.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. Through the arrangement of the main gas pipe, connecting nozzle, inner nozzle and combustion-supporting hole, the gas in the main gas pipe flows into the connecting nozzle through the inner nozzle, producing a Venturi effect, accelerating the gas flow rate, and sucking the outside air into the connecting nozzle through the combustion-supporting hole, with high combustion efficiency and semi-premixed combustion effect, thus improving the ignition efficiency of the pilot flame nozzle and reducing the possibility of flame instability or flameout after ignition;

[0023] 2. Through the setting of the support frame, the ignition electrode, the first limiting hole and the second limiting hole, the support frame facilitates the installation of the main gas pipe and the burner; through the setting of the ignition electrode, it is convenient to connect the nozzle to generate flame; the first limiting hole can limit the ignition electrode, and the second limiting hole can limit the main gas pipe, which is convenient for the installation of the ignition electrode and the main gas pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the self-priming and combustion-supporting long-open flame nozzle in Example 1 of the present application.

[0025] Figure 2 It is a schematic diagram of the explosion structure used to reflect the main air pipe, connecting nozzle and inner nozzle in Example 1 of the present application.

[0026] Figure 3 It is a schematic diagram of the internal structure of the self-priming and combustion-supporting long-open flame nozzle in Example 1 of the present application.

[0027] Figure 4 It is a schematic diagram of the internal structure of the self-priming and combustion-supporting long-open flame nozzle in Example 2 of the present application.

[0028] Explanation of the reference numerals: 1. main gas pipe; 11. positioning ring block; 111. positioning block; 12. fixing ring block; 2. connecting nozzle; 21. combustion-supporting hole; 22. auxiliary gap; 3. inner nozzle; 31. first subdivision; 311. positioning groove; 32. second subdivision; 321. guide sleeve; 4. support frame; 41. first limiting hole; 42. second limiting hole; 43. first bolt hole; 44. second bolt hole; 5. ignition electrode. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] Embodiment 1:

[0031] The present application embodiment discloses a self-priming combustion-supporting long-open flame nozzle, such as Figure 1 As shown, it includes a main gas pipe 1 and a connecting nozzle 2, and the connecting nozzle 2 is installed on one end of the main gas pipe 1. The main gas pipe 1 is sleeved on a support frame 4, and an ignition electrode 5 is provided on the support frame 4. A first limiting hole 41 and a second limiting hole 42 are opened on the support frame 4. The first limiting hole 41 is for the ignition electrode 5 to pass through, and the first limiting hole 41 can limit the ignition electrode 5; the second limiting hole 42 is for the main gas pipe 1 to pass through, and the second limiting hole 42 can limit the main gas pipe 1.

[0032] like Figure 1 As shown, the support frame 4 is provided with a first bolt hole 43 and a second bolt hole 44, both of which are for bolts to be screwed in, the first bolt hole 43 is connected to the first limiting hole 41, and the second bolt hole 44 is connected to the second limiting hole 42. After the ignition electrode 5 is embedded in the first limiting hole 41, the operator can screw the bolt into the first bolt hole 43 and screw it until it abuts against the ignition electrode 5, so that the ignition electrode 5 is located in the first limiting hole 41 and fixed, thereby realizing the installation of the ignition electrode 5 and the support frame 4. After the main gas pipe 1 is embedded in the second limiting hole 42, the operator can screw the bolt into the second bolt hole 44 and screw it until it abuts against the main gas pipe 1, so that the main gas pipe 1 is located in the second limiting hole 42 and fixed, thereby realizing the installation of the main gas pipe 1 and the support frame 4, which is convenient for the main gas pipe 1 and the ignition electrode 5 to be installed in the burner.

[0033] like Figure 2 and 3 As shown, the main air pipe 1 is provided with an inner nozzle 3, and the inner nozzle 3 includes a first sub-section 31 and a second sub-section 32, which are integrally formed, and the first sub-section 31 is located in the main air pipe 1, and the outer wall of the first sub-section 31 is fixedly connected to the inner wall of the main air pipe 1; the second sub-section 32 is located in the connecting nozzle 2, and an auxiliary gap 22 is formed between the second sub-section 32 and the inner wall of the connecting nozzle 2. When the inner nozzle 3 needs to be installed, the first sub-section 31 is moved to move the first sub-section 31 into the main air pipe 1, and the first sub-section 31 is fixedly connected to the inner wall of the main air pipe 1, so as to realize the installation of the inner nozzle 3. When the gas in the main gas pipe 1 flows into the connecting nozzle 2 through the inner nozzle 3, the flow velocity of the gas is accelerated when passing through the inner nozzle 3, producing a Venturi effect, and the outside air can be sucked into the connecting nozzle 2 through the combustion-supporting hole 21, thereby improving the combustion efficiency, having a semi-premixed combustion effect, improving the ignition efficiency of the long-fire nozzle, and reducing the possibility of flame instability or flameout after ignition.

[0034] The implementation principle of a self-priming combustion-supporting long-open flame nozzle in the embodiment of the present application is:

[0035] The operator moves the ignition electrode 5 to the first limiting hole 41, and fixes the ignition electrode 5 in the first limiting hole 41 by bolts, moves the main gas pipe 1 to the second limiting hole 42, and fixes the main gas pipe 1 in the second limiting hole 42 by bolts, thereby installing the ignition electrode 5 and the main gas pipe 1. The operator moves the first subsection 31 to move the first subsection 31 into the main gas pipe 1, and fixes the first subsection 31 and the main gas pipe 1 to install the inner nozzle 3. When the gas in the main gas pipe 1 flows into the connecting nozzle 2 through the inner nozzle 3, the flow rate of the gas is accelerated when passing through the inner nozzle 3, and the outside air can be sucked into the connecting nozzle 2 through the combustion-supporting hole 21, thereby improving the ignition efficiency of the long-fire nozzle.

[0036] Embodiment 2:

[0037] like Figure 4 As shown, the difference between the embodiment of the present application and the first embodiment is that the first subdivision 31 and the main air pipe 1 in the embodiment of the present application are detachably connected. A positioning ring block 11 is fixedly connected inside the main air pipe 1, and a positioning block 111 is fixedly connected to the positioning ring block 11, and the positioning block 111 is arranged in a ring shape. The first subdivision 31 is provided with a positioning groove 311, and the positioning groove 311 is for the positioning block 111 to be embedded. When the inner nozzle 3 needs to be installed in the main air pipe 1, the operator moves the first subdivision 31 so that the first subdivision 31 moves to abut against the positioning ring block 11, and the positioning block 111 is embedded in the positioning groove 311. The positioning ring block 11 can axially limit the first subdivision 31, and the positioning block 111 can further limit the first subdivision 31, and improve the sealing degree between the first subdivision 31 and the main air pipe 1, which is convenient for the fixed installation of the first subdivision 31 and the main air pipe 1.

[0038] like Figure 4 As shown, a fixing ring block 12 is provided on the first sub-section 31, and the cross section of the fixing ring block 12 is triangular. The outer wall of the fixing ring block 12 is threadedly connected to the inner wall of the main air pipe 1. A groove for the operator to apply force is provided on the fixing ring block 12, so that the operator can rotate the fixing ring block 12, and the fixing ring block 12 can be rotated to abut against the first sub-section 31 and fit with the first sub-section 31. When the first sub-section 31 moves to abut against the positioning ring block 11, the operator can apply force to the groove wall of the groove through the groove on the fixing ring block 12 to rotate the fixing ring block 12 until the fixing ring block 12 rotates to abut against the first sub-section 31. The fixing ring block 12 can apply force to the first sub-section 31, so that the first sub-section 31 is located and fixed in the main air pipe 1, thereby realizing the fixed installation of the inner nozzle 3.

[0039] like Figure 4As shown, a guide sleeve 321 is sleeved on the second sub-section 32, and the inner wall of the guide sleeve 321 is threadedly connected to the outer wall of the second sub-section 32, and the outer diameter of the guide sleeve 321 is gradually reduced along its own axial direction toward the end of the connecting nozzle 2. The operator can rotate the guide sleeve 321 onto the second sub-section 32, and when the outside air is sucked into the connecting nozzle 2 through the combustion-supporting hole 21, the guide sleeve can guide the air to facilitate the air to flow into the connecting nozzle 2, thereby improving the ignition efficiency of the long-fire nozzle and reducing the possibility of unstable flame or flameout after ignition.

[0040] The implementation principle of a self-priming combustion-supporting long-open flame nozzle in the embodiment of the present application is:

[0041] The operator moves the first section 31 into the main air pipe 1 and moves it until it contacts the positioning ring block 11, then screws in the fixing ring block 12, rotates the fixing ring block 12 until it contacts the first section 31, and fixes the first section 31 in the main air pipe 1, thereby installing the inner nozzle 3. The operator rotates the guide sleeve 321 onto the second section 32, and the guide sleeve can guide the air to facilitate the air to flow into the connecting nozzle 2.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A self-priming combustion-supporting long-open flame nozzle, characterized in that: The invention comprises a main gas pipe (1) and a connecting nozzle (2), wherein the connecting nozzle (2) is connected to one end of the main gas pipe (1), an inner nozzle (3) is arranged in the main gas pipe (1), one end of the inner nozzle (3) is located in the main gas pipe (1), and the other end is located in the connecting nozzle (2), and a combustion-supporting hole (21) is provided on the connecting nozzle (2).

2. A self-priming combustion-supporting pilot flame nozzle according to claim 1, characterized in that: The inner nozzle (3) comprises a first section (31) and a second section (32), wherein the first section (31) and the second section (32) are fixedly connected, the first section (31) is located in the main air pipe (1), the outer wall of the first section (31) is connected to the inner wall of the main air pipe (1), the second section (32) is located in the connecting nozzle (2), and an auxiliary gap (22) is formed between the second section (32) and the inner wall of the connecting nozzle (2).

3. A self-priming combustion-supporting pilot flame nozzle according to claim 1, characterized in that: A support frame (4) is sleeved on the main gas pipe (1), an ignition electrode (5) is arranged on the support frame (4), a first limiting hole (41) and a second limiting hole (42) are opened on the support frame (4), the first limiting hole (41) is for the ignition electrode (5) to pass through, and the second limiting hole (42) is for the main gas pipe (1) to pass through.

4. A self-priming combustion-supporting pilot flame nozzle according to claim 3, characterized in that: The support frame (4) is provided with a first bolt hole (43) and a second bolt hole (44), both of which are for bolts to be screwed into, the first bolt hole (43) is connected to the first limiting hole (41), and the second bolt hole (44) is connected to the second limiting hole (42).

5. A self-priming combustion-supporting pilot flame nozzle according to claim 2, characterized in that: The first subsection (31) and the main air pipe (1) are detachably connected.

6. A self-priming combustion-supporting pilot flame nozzle according to claim 5, characterized in that: A positioning ring block (11) is fixedly connected inside the main air pipe (1), a positioning block (111) is fixedly connected to the positioning ring block (11), and a positioning groove (311) is provided on the first sub-portion (31), wherein the positioning block (111) is embedded.

7. A self-priming combustion-supporting pilot flame nozzle according to claim 6, characterized in that: The first sub-portion (31) is provided with a fixing ring block (12), the fixing ring block (12) and the inner wall of the main air pipe (1) are threadedly connected, and the fixing ring block (12) abuts against the first sub-portion (31).

8. A self-priming combustion-supporting pilot flame nozzle according to claim 2, characterized in that: The second section (32) is provided with a guide sleeve (321), the inner wall of the guide sleeve (321) is threadedly connected to the outer wall of the second section (32), and the outer diameter of the guide sleeve (321) is gradually reduced along its own axial direction toward the end connected to the nozzle (2).

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