Pressure-stabilizing gas supply device for natural gas cutting

Abstract

The utility model discloses a pressure stabilizing gas supply device for natural gas cutting, which relates to the technical field of gas cutting equipment, and comprises a gas supply pipe, the left part of the gas supply pipe is fixedly connected with a flow meter, the right part of the gas supply pipe is fixedly connected with a pressure sensor, and the top of the gas supply pipe is provided with an overflow hole. The bottom of the air supply pipe is fixedly connected with a pressure stabilizing mechanism, the air supply pipe is fixedly connected with an adjusting mechanism through a bolt, and the top of the adjusting mechanism is slidably connected with a limiting mechanism. According to the pressure stabilizing gas supply device for natural gas cutting, by pressing the adjusting rod downwards, the adjusting rod drives the connecting block to move downwards synchronously and drives the second spring to move synchronously, the second spring drives the connecting base to move synchronously, the connecting base slides downwards on the inner wall of the shell, and therefore the distance between the pressure reducing diaphragm and the top space of the shell is reduced, and the pressure reducing effect is improved. The effect of changing the pressure reduction amount is achieved by changing the pressure reduction amount.

Description

Technical Field

[0001] The utility model relates to the technical field of gas cutting equipment, in particular to a pressure-stabilizing gas supply device for natural gas cutting. Background Art

[0002] Natural gas cutting refers to the process of using natural gas flame, oxygen-natural gas to preheat the metal to be cut to the ignition point where it can burn violently, and then releasing a high-pressure oxygen flow to further violently oxidize the metal and blow away the slag produced by the combustion to form an incision. The flame temperature of ordinary natural gas with oxygen combustion cannot reach the flame temperature of acetylene with oxygen combustion. Temperature-increasing and combustion-supporting additives must be added to achieve the cutting temperature required for natural gas cutting. When the cutter is working, a voltage stabilizer is required to ensure a stable supply of natural gas.

[0003] The existing technology has the following problems:

[0004] The natural gas supply pressure stabilizing device of the prior art cannot adjust the corresponding pressure value according to the pressure reduction demand and adjust different pressure reduction amounts, which reduces the practicality of the device. At the same time, it is difficult to replace the pressure reducing diaphragm of the device of the prior art, which reduces the practicality of the device. Utility Model Content

[0005] The utility model provides a pressure-stabilizing gas supply device for natural gas cutting to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A pressure-stabilizing gas supply device for natural gas cutting comprises a gas supply pipe, a flow meter is fixedly connected to the left portion of the gas supply pipe, a pressure sensor is fixedly connected to the right portion of the gas supply pipe, an overflow hole is opened at the top of the gas supply pipe, a pressure-stabilizing mechanism is fixedly connected to the bottom of the gas supply pipe, an adjusting mechanism is fixedly connected to the gas supply pipe by bolts, a limiting mechanism is slidably connected to the top of the adjusting mechanism, the pressure-stabilizing mechanism comprises a fixed frame and a valve seat, the top of the fixed frame is fixedly connected to the bottom of the gas supply pipe, the outer wall of the valve seat is fixedly connected to the middle portion of the gas supply pipe, the adjusting mechanism comprises a shell, the bottom of the shell is fixedly connected to the top of the gas supply pipe by bolts, and the limiting mechanism comprises an adjusting rod, the outer wall of the adjusting rod is slidably connected to the top of the shell.

[0008] Preferably: a spring 1 is fixedly connected to the bottom end of the inner cavity of the fixed frame, a sealing plate is fixedly connected to the top end of the spring 1, an outer wall of the sealing plate is slidably connected to the inner wall of the fixed frame, a valve core is fixedly connected to the top end of the sealing plate, an outer wall of the valve core is slidably connected to the inner wall of the air supply pipe, and the middle part of the valve core is located in the inner cavity of the valve seat.

[0009] Preferably: a pressure reducing diaphragm is overlapped at the bottom end of the shell, the bottom end of the pressure reducing diaphragm is overlapped with the top end of the air supply pipe, an air window is fixedly connected to the inner wall of the shell, a fixed block is fixedly connected to the top end of the shell, and the inner wall of the fixed block is slidably connected to the outer wall of the adjusting rod.

[0010] Preferably: the top of the shell is slidably connected with a connecting block, the bottom end of the connecting block is fixedly connected with spring 2, the bottom end of spring 2 is fixedly connected with a connecting seat, the outer wall of the connecting seat is slidably connected with the inner cavity of the shell, and the bottom end of the connecting seat overlaps with the top end of the pressure reducing diaphragm.

[0011] Preferably, the top of the outer wall of the connection block is fixedly connected to the limiting block in a circular array, the outer wall of the limiting block is slidably connected to the top of the shell, and the outer shape of the connection block is arc-shaped.

[0012] Preferably: the outer wall of the adjusting rod is provided with a scale, the bottom end of the adjusting rod is fixedly connected to the bottom end of the inner cavity of the connecting block, the inner wall of the adjusting rod is plugged with a limiting rod, the outer wall of the limiting rod is plugged with the inner wall of the fixed block, the right part of the limiting rod is fixedly connected with a spring three, and the left end of the spring three is fixedly connected to the outer wall of the fixed block.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] 1. The utility model provides a pressure-stabilizing gas supply device for natural gas cutting. By pressing the adjusting rod downward, the adjusting rod drives the connecting block to move downward synchronously, drives the second spring to move synchronously, and the second spring drives the connecting seat to move synchronously, so that the connecting seat slides downward on the inner wall of the shell, thereby reducing the distance between the pressure reducing diaphragm and the top space of the shell, thereby changing the pressure reducing amount, which has the effect of changing the pressure reducing amount.

[0015] 2. The utility model provides a pressure-stabilizing gas supply device for natural gas cutting. When the pressure-reducing diaphragm needs to be replaced, the pressure-reducing diaphragm can be replaced after the bolts threadedly connected to the outer shell, the pressure-reducing diaphragm and the gas supply pipe are unscrewed, thereby facilitating the replacement or maintenance of the pressure-reducing diaphragm and achieving the effect of facilitating the replacement of the pressure-reducing diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the main view of the utility model;

[0017] Figure 2 It is a schematic diagram of the cutaway structure of the main view of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the voltage stabilizing mechanism of the utility model;

[0019] Figure 4It is a structural schematic diagram of the adjustment mechanism of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the limiting mechanism of the utility model.

[0021] In the figure: 1. air supply pipe; 11. flow meter; 12. pressure sensor; 13. overflow hole; 2. pressure stabilizing mechanism; 21. fixing frame; 22. spring one; 23. sealing plate; 24. valve core; 25. valve seat; 3. adjusting mechanism; 31. housing; 32. pressure reducing diaphragm; 33. air vent; 34. connecting block; 35. limiting block; 36. spring two; 37. connecting seat; 38. fixing block; 4. limiting mechanism; 41. adjusting rod; 42. limiting rod; 43. spring three. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-Figure 5 As shown, a pressure-stabilizing gas supply device for natural gas cutting includes a gas supply pipe 1, a flow meter 11 is fixedly connected to the left portion of the gas supply pipe 1, a pressure sensor 12 is fixedly connected to the right portion of the gas supply pipe 1, an overflow hole 13 is opened at the top of the gas supply pipe 1, a pressure-stabilizing mechanism 2 is fixedly connected to the bottom of the gas supply pipe 1, an adjusting mechanism 3 is fixedly connected to the gas supply pipe 1 by bolts, a limiting mechanism 4 is slidably connected to the top of the adjusting mechanism 3, the pressure-stabilizing mechanism 2 includes a fixed frame 21 and a valve seat 25, the top of the fixed frame 21 is fixedly connected to the bottom of the gas supply pipe 1, the outer wall of the valve seat 25 is fixedly connected to the middle portion of the gas supply pipe 1, the adjusting mechanism 3 includes a shell 31, the bottom of the shell 31 is fixedly connected to the top of the gas supply pipe 1 by bolts, and the limiting mechanism 4 includes an adjusting rod 41, and the outer wall of the adjusting rod 41 is slidably connected to the top of the shell 31.

[0024] The pressure reduction amount can be adjusted by the cooperation between the regulating mechanism 3 and the limiting mechanism 4, and the pressure stabilizing mechanism 2 can ensure the stability of the pressure during the natural gas supply.

[0025] like Figure 2 , Figure 3 As shown, a spring 22 is fixedly connected to the bottom end of the inner cavity of the fixed frame 21, a sealing plate 23 is fixedly connected to the top end of the spring 22, an outer wall of the sealing plate 23 is slidably connected to the inner wall of the fixed frame 21, a valve core 24 is fixedly connected to the top end of the sealing plate 23, an outer wall of the valve core 24 is slidably connected to the inner wall of the air supply pipe 1, and the middle part of the valve core 24 is located in the inner cavity of the valve seat 25.

[0026] During the input process, the flow rate of natural gas is recorded by the flow meter 11. The natural gas flows to the right part of the gas supply pipe 1, causing the sealing plate 23 to slide downward on the inner wall of the fixed frame 21, causing the spring 1 22 to contract. At the same time, the overflow hole 13 is used to reduce the pressure, ensuring that the pressure at the output port meets the corresponding pressure range, effectively increasing the pressure stability of the natural gas supply. When the pressure of the natural gas flowing in the gas supply pipe 1 reaches the preset threshold, the pressure sensor 12 will display the pressure value at this time and control the output of the natural gas on the right part of the gas supply pipe 1. At this time, the natural gas in the gas supply pipe 1 enters the The pressure reducing diaphragm 32 is deformed in the cavity formed between the top of the gas supply pipe 1 and the pressure reducing diaphragm 32, and the pressure reducing diaphragm 32 drives the connecting seat 37 to move upward, causing the spring 2 36 to contract. When the natural gas enters the cavity between the gas supply pipe 1 and the pressure reducing diaphragm 32, the sealing plate 23 moves upward under the action of the elastic force of the spring 1 22. When the outer wall of the sealing plate 23 separates from the inner cavity of the fixed frame 21, the natural gas enters the inner cavity of the fixed frame 21, causing the outer wall of the sealing plate 23 to contact the bottom of the valve seat 25, thereby continuing to block the valve seat 25 and cutting off the ventilation of the liquefied natural gas.

[0027] like Figure 2 , Figure 4 As shown, a pressure reducing diaphragm 32 is overlapped at the bottom end of the outer shell 31, and the bottom end of the pressure reducing diaphragm 32 is overlapped with the top end of the air supply pipe 1. A ventilation window 33 is fixedly connected to the inner wall of the outer shell 31, and a fixing block 38 is fixedly connected to the top end of the outer shell 31. The inner wall of the fixing block 38 is slidably connected to the outer wall of the adjusting rod 41.

[0028] When the pressure reducing diaphragm 32 needs to be replaced, the pressure reducing diaphragm 32 can be replaced after the bolts threadedly connected to the outer shell 31, the pressure reducing diaphragm 32 and the air supply pipe 1 are unscrewed, thereby facilitating the replacement or maintenance of the pressure reducing diaphragm 32 and achieving the effect of facilitating the replacement of the pressure reducing diaphragm 32.

[0029] like Figure 2 , Figure 4 As shown, the top of the shell 31 is slidably connected with a connecting block 34, the bottom end of the connecting block 34 is fixedly connected with a spring 2 36, the bottom end of the spring 2 36 is fixedly connected with a connecting seat 37, the outer wall of the connecting seat 37 is slidably connected to the inner cavity of the shell 31, the bottom end of the connecting seat 37 overlaps with the top of the pressure reducing diaphragm 32, the top of the outer wall of the connecting block 34 is fixedly connected with a limiting block 35 in a circular array, the outer wall of the limiting block 35 is slidably connected to the top of the shell 31, and the outer shape of the connecting block 34 is arc-shaped.

[0030] When the connecting block 34 moves, it drives the limit block 35 to slide on the inner wall of the outer shell 31, and the limit block 35 limits the connecting block 34. At the same time, the connecting block 34 drives the spring 2 36 to move synchronously, and the spring 2 36 drives the connecting seat 37 to move synchronously, so that the connecting seat 37 slides downward on the inner wall of the outer shell 31, thereby reducing the distance between the pressure reducing diaphragm 32 and the top space of the outer shell 31, thereby changing the pressure reducing amount.

[0031] like Figure 2 , Figure 5 As shown, the outer wall of the adjusting rod 41 is provided with a scale, the bottom end of the adjusting rod 41 is fixedly connected to the bottom end of the inner cavity of the connecting block 34, the inner wall of the adjusting rod 41 is plugged with a limiting rod 42, the outer wall of the limiting rod 42 is plugged with the inner wall of the fixing block 38, the right part of the limiting rod 42 is fixedly connected with a spring three 43, and the left end of the spring three 43 is fixedly connected to the outer wall of the fixing block 38.

[0032] Pulling the limit rod 42 drives the spring three 43 to expand and contract, so that the outer wall of the limit rod 42 is no longer plugged into the inner wall of the adjusting rod 41. Then, the adjusting rod 41 can be pressed downward, so that the adjusting rod 41 drives the connecting block 34 to move downward synchronously. According to the scale on the outer wall of the adjusting rod 41, the depth of the descent of the adjusting rod 41 is observed. When the specified value is reached, the pressing of the adjusting rod 41 can be stopped. Then, under the action of the elastic force of the spring three 43, the outer wall of the limit rod 42 is plugged into the inner wall of the adjusting rod 41, thereby limiting the adjusting rod 41 and achieving a limiting effect.

[0033] The working principle of the utility model is as follows: when in use, according to the required decompression amount, the limit rod 42 is pulled to drive the spring three 43 to expand and contract, so that the outer wall of the limit rod 42 is no longer plugged into the inner wall of the adjusting rod 41, and then the adjusting rod 41 can be pressed downward, so that the adjusting rod 41 drives the connecting block 34 to move downward synchronously, and the connecting block 34 drives the limit block 35 to slide on the inner wall of the shell 31, and the limit block 35 limits the connecting block 34, and at the same time, the connecting block 34 drives the spring two 36 to move synchronously, and the spring two 36 drives the connecting seat 37 to move synchronously, so that the connecting seat 37 slides downward on the inner wall of the shell 31, thereby reducing the pressure relief diaphragm 32 and the shell 3 1, and observe the depth of the adjustment rod 41 descending according to the scale on the outer wall of the adjustment rod 41. When the specified value is reached, stop pressing the adjustment rod 41. Then, under the elastic force of the spring three 43, the outer wall of the limit rod 42 is plugged into the inner wall of the adjustment rod 41, thereby changing the decompression amount. Then, the natural gas is input from the left side of the gas supply pipe 1. During the input process, the flow rate of the natural gas is recorded by the flow meter 11. The natural gas flows to the right part of the gas supply pipe 1, causing the sealing plate 23 to slide downward on the inner wall of the fixed frame 21, causing the spring one 22 to contract, and at the same time, the overflow hole 13 is used to reduce the pressure. The pressure at the output port is ensured to meet the corresponding pressure range, which effectively increases the pressure stability of the natural gas supply. When the pressure of the natural gas flowing in the gas supply pipe 1 reaches the preset threshold, the pressure sensor 12 will display the pressure value at this time and control the output of the natural gas on the right side of the gas supply pipe 1. At this time, the natural gas in the gas supply pipe 1 enters the cavity formed between the top of the gas supply pipe 1 and the pressure reducing diaphragm 32 through the overflow hole 13, causing the pressure reducing diaphragm 32 to deform. The pressure reducing diaphragm 32 drives the connecting seat 37 to move upward, causing the spring 2 36 to contract. When the natural gas enters the cavity between the gas supply pipe 1 and the pressure reducing diaphragm 32, the elastic force of the spring 22 Under the action of, the sealing plate 23 moves upward, and when the outer wall of the sealing plate 23 is separated from the inner cavity of the fixed frame 21, the natural gas enters the inner cavity of the fixed frame 21, so that the outer wall of the sealing plate 23 contacts the bottom of the valve seat 25, thereby continuing to block the valve seat 25 and cutting off the ventilation of liquefied natural gas. Subsequently, when it is necessary to replace the pressure reducing diaphragm 32, the bolts threadedly connected to the outer shell 31, the pressure reducing diaphragm 32 and the gas supply pipe 1 are screwed out, and the pressure reducing diaphragm 32 can be replaced, thereby facilitating the replacement or maintenance of the pressure reducing diaphragm 32, and facilitating the replacement of the pressure reducing diaphragm 32, thereby greatly improving the user experience.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure-stabilizing gas supply device for natural gas cutting, comprising a gas supply pipe (1), characterized in that: The left part of the air supply pipe (1) is fixedly connected to a flow meter (11), the right part of the air supply pipe (1) is fixedly connected to a pressure sensor (12), the top of the air supply pipe (1) is provided with an overflow hole (13), the bottom of the air supply pipe (1) is fixedly connected to a pressure stabilizing mechanism (2), the air supply pipe (1) is fixedly connected to an adjusting mechanism (3) by bolts, the top of the adjusting mechanism (3) is slidably connected to a limiting mechanism (4), and the pressure stabilizing mechanism (2) comprises a fixed The fixing frame (21) and the valve seat (25) are fixedly connected to each other, the top of the fixing frame (21) is fixedly connected to the bottom of the air supply pipe (1), the outer wall of the valve seat (25) is fixedly connected to the middle of the air supply pipe (1), the adjusting mechanism (3) comprises an outer shell (31), the bottom of the outer shell (31) is fixedly connected to the top of the air supply pipe (1) by bolts, and the limiting mechanism (4) comprises an adjusting rod (41), the outer wall of the adjusting rod (41) is slidably connected to the top of the outer shell (31).

2. A pressure-stabilizing gas supply device for natural gas cutting according to claim 1, characterized in that: A spring 1 (22) is fixedly connected to the bottom end of the inner cavity of the fixed frame (21), a sealing plate (23) is fixedly connected to the top end of the spring 1 (22), an outer wall of the sealing plate (23) is slidably connected to the inner wall of the fixed frame (21), a valve core (24) is fixedly connected to the top end of the sealing plate (23), an outer wall of the valve core (24) is slidably connected to the inner wall of the air supply pipe (1), and the middle of the valve core (24) is located in the inner cavity of the valve seat (25).

3. A pressure-stabilizing gas supply device for natural gas cutting according to claim 1, characterized in that: The bottom end of the shell (31) is overlapped with a pressure reducing diaphragm (32), the bottom end of the pressure reducing diaphragm (32) is overlapped with the top end of the air supply pipe (1), the inner wall of the shell (31) is fixedly connected with a ventilation window (33), the top end of the shell (31) is fixedly connected with a fixing block (38), and the inner wall of the fixing block (38) is slidably connected with the outer wall of the adjusting rod (41).

4. A pressure-stabilizing gas supply device for natural gas cutting according to claim 1, characterized in that: The top of the shell (31) is slidably connected to a connecting block (34), the bottom end of the connecting block (34) is fixedly connected to a spring 2 (36), the bottom end of the spring 2 (36) is fixedly connected to a connecting seat (37), the outer wall of the connecting seat (37) is slidably connected to the inner cavity of the shell (31), and the bottom end of the connecting seat (37) overlaps the top end of the pressure reducing diaphragm (32).

5. A pressure-stabilizing gas supply device for natural gas cutting according to claim 4, characterized in that: The top of the outer wall of the connection block (34) is fixedly connected to the limiting block (35) in a circular array, the outer wall of the limiting block (35) is slidably connected to the top of the outer shell (31), and the outer shape of the connection block (34) is arc-shaped.

6. A pressure-stabilizing gas supply device for natural gas cutting according to claim 3, characterized in that: The outer wall of the adjusting rod (41) is provided with a scale, the bottom end of the adjusting rod (41) is fixedly connected to the bottom end of the inner cavity of the connecting block (34), the inner wall of the adjusting rod (41) is plugged with a limiting rod (42), the outer wall of the limiting rod (42) is plugged with the inner wall of the fixing block (38), the right part of the limiting rod (42) is fixedly connected with a spring three (43), and the left end of the spring three (43) is fixedly connected to the outer wall of the fixing block (38).

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