Novel natural gas heating nozzle

Abstract

A novel natural gas heating nozzle belongs to the technical field of welding processing. The air inlet device comprises a hole nozzle (1), a first-stage outer sleeve (2), a plug (3), a spray pipe (4), a throttle pipe (5), a bottom sleeve (6) and an air inlet plate (7), the air inlet plate (7) is welded with the bottom sleeve (6), the spray pipe (4) and the plug (3), the first-stage outer sleeve (2) is welded with the hole nozzle (2) and the throttle pipe (5), and the first-stage outer sleeve (2) is in threaded connection with the bottom sleeve (6) after welding is completed. The relative position of the throttling holes between the throttling pipe (5) and the spraying pipe (4) can be adjusted by adjusting the threads, so that the gas output and the gas output speed of the natural gas are controlled, and the effect of controlling flames is achieved. By means of the mechanisms, the length and strength of flames can be adjusted so as to meet the heating requirements of various workpieces.

Description

Technical Field

[0001] The utility model relates to a novel natural gas heating nozzle and belongs to the technical field of welding processing. Background Art

[0002] Some parts require preheating and post-heating during welding. Using natural gas flame heating is a relatively simple method, and in most cases the cost of natural gas heating is lower than that of resistance furnace heating.

[0003] The flame cannot be adjusted using the original nozzle and can only be adjusted by controlling the switch opening. The adjustment process is difficult to control and the flame adjustment effect is poor.

[0004] Therefore, it is urgent to propose a new type of nozzle to solve the above technical problems. Utility Model Content

[0005] The purpose of developing the utility model is to simply complete the adjustment operation of the natural gas heating flame. The adjustment at the flame mouth is more intuitive and convenient, and the adjustment is more precise.

[0006] The technical solution of this utility model:

[0007] A new type of natural gas heating nozzle includes an orifice, a first-stage jacket, a plug, a nozzle, a throttle tube, a bottom sleeve and an air intake plate. The bottom of the nozzle is connected to the natural gas pipe after being welded to the corresponding components. The first-stage jacket is threadedly connected to the bottom sleeve after being welded to the corresponding components. After completion, a complete nozzle is formed and can be put into use.

[0008] Preferably, the orifice is conical, and the inner hole is larger than the nozzle diameter, so as to facilitate the gathering of natural gas.

[0009] Preferably, the throttling tube and the nozzle are both processed with throttling holes, and the flow area is adjusted by adjusting the relative position of the throttling tube and the nozzle to achieve the purpose of controlling the flow rate and pressure, and the adjustable range is 0-100%.

[0010] Preferably, the thread position and the throttle hole position are far away from the nozzle position and are no longer within the flame heating range, thereby avoiding jamming caused by heating and facilitating adjustment by movement.

[0011] Preferably: the tail end of the nozzle is an air intake plate, the upper end is processed with an air intake port to facilitate the entry of air from the rear, the tail end of the throttle tube is also processed with an air intake port, and the air intake port at the tail end of the throttle tube is smaller, which can ensure that air can enter while preventing the backflow of natural gas.

[0012] The utility model has the following beneficial effects:

[0013] The utility model discloses a novel natural gas heating nozzle which can realize flame adjustment at the nozzle end and can perform secondary adjustment when the natural gas tail valve maintains different openings. The use process is more convenient and the adjustment range is larger. The flame form can be controlled while controlling the natural gas pressure, which is convenient for heating parts under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a gas flow diagram when a new type of natural gas heating nozzle of the utility model is used;

[0015] Figure 2 This is a diagram of the air inlet at the throttle tube and the first-stage jacket;

[0016] Figure 3 This is a diagram of the bottom sleeve and the air intake of the air intake plate;

[0017] In the figure, 1-mouth, 2-first-stage jacket, 3-plug, 4-nozzle, 5-throttle tube, 6-bottom sleeve, 7-air inlet plate, 8-natural gas inlet, 9-air inlet, 10-flame outlet, 11-throttle hole, 12-thread, 13-air inlet, 14-air inlet. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below by specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection, including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but is not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can always be found in the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: choose welding connection for fixed connection and hinge connection for detachable connection.

[0020] Specific implementation method 1: Combination Figure 1The present embodiment is described. A novel natural gas heating nozzle of the present embodiment comprises a nozzle 1, a first-level sleeve 2, a plug 3, a nozzle 4, a throttle tube 5, a bottom sleeve 6 and an air inlet plate 7. The outer circle of the first-level sleeve 2 is threaded, the throttle tube 5 is provided with 15 throttle holes and 6 air inlet holes, and the throttle tube 5, the nozzle 1 and the first-level sleeve 2 are welded together; the nozzle 4 is welded to the plug 3, 15 throttle holes are provided on the nozzle 4, and the size is consistent with that on the throttle tube 5, 6 air inlet holes are provided on the air inlet plate 7, and the air inlet plate 7 is welded to the bottom sleeve 6 and the nozzle 4; the first-level sleeve 2 and the bottom sleeve 6 are connected by threads.

[0021] Working principle of this implementation:

[0022] The nozzle 4 is connected to the natural gas inlet pipe. After opening the natural gas valve, the natural gas Figure 1 The gas enters the nozzle 4 at position 8 in the middle sequence, rotates the first-stage jacket 2 to drive the throttle tube 5 to rotate, opens the throttle hole 11, and fills the first-stage jacket 2 with natural gas; ignites a flame outside the orifice 1, and the natural gas is ejected along the direction of the orifice 1 to form a flame. Figure 1 Position 10 in the middle sequence; air enters from the air inlet hole at the bottom of the throttle tube 5 of the 7th stage of the air inlet plate, the position is as follows Figure 1 As shown in the sequence number 9; by rotating the first-stage jacket 2 to drive the throttle tube 5, the opening of the throttle tube 5 and the throttle hole on the nozzle 4 is adjusted to adjust the natural gas flow rate, thereby completing the adjustment of the flame size.

[0023] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities based on the mathematical knowledge of arrangement and combination. Therefore, the present invention will no longer describe the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present invention.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of natural gas heating nozzle, characterized by: The invention comprises a nozzle (1), a first-stage outer sleeve (2), a plug (3), a nozzle (4), a throttle tube (5), a bottom sleeve (6) and an air inlet plate (7); the first-stage outer sleeve (2) is threaded on its outer circumference; the nozzle (1), the throttle tube (5) and the first-stage outer sleeve (2) are welded together; the nozzle (4) is welded to the plug (3); the air inlet plate (7) is welded to the bottom sleeve (6) and the nozzle (4); the first-stage outer sleeve (2) and the bottom sleeve (6) are connected by threads.

2. A new type of natural gas heating nozzle according to claim 1, characterized in that: The orifice (1) is a conical structure, and the size of the inner orifice is larger than the diameter of the nozzle (4).

3. A new type of natural gas heating nozzle according to claim 1, characterized in that: The size of the air inlet hole at the tail end of the throttle tube (5) is smaller than the size of the air inlet hole in the air inlet plate (7).

4. A new type of natural gas heating nozzle according to claim 1, characterized in that: The primary outer sleeve (2) and the bottom sleeve (6) are connected by threads.

5. The novel natural gas heating nozzle according to claim 1 is characterized in that: The primary outer sleeve (2) and the bottom sleeve (6) can move relative to each other within a certain range, thereby controlling the opening of the throttle hole.

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