Natural gas and air mixing device

Abstract

The utility model discloses a natural gas and air mixing device which comprises a first gas mixing cavity, a second gas mixing cavity connected with the first gas mixing cavity through a gas mixing pipeline and a controller, an air inlet pipe and a natural gas inlet pipe are oppositely arranged on the two sides of the first gas mixing cavity, two gas mixing plates are arranged in the first gas mixing cavity, and an air cylinder penetrates through the first gas mixing cavity and is connected with the gas mixing plates; a mixed gas outlet pipe is arranged at the top end of the second gas mixing cavity, a gas guide plate is hermetically mounted in the second gas mixing cavity, the gas guide plate is used for forming a spiral gas mixing channel with the second gas mixing cavity, an inlet of the spiral gas mixing channel is communicated with the gas inlet, an outlet is communicated with the mixed gas outlet pipe, and a gas mixing fan is arranged in the center of the second gas mixing cavity. Natural gas and air are effectively mixed based on the two gas mixing cavities, the mixing proportion of the mixed gas is flexibly controlled through the controller, the requirements of users are met, harmful substances discharged by gas equipment in the combustion process are reduced, the energy-saving and environment-friendly effects are achieved, and the device is simple in structure, good in mixing effect and good in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas engineering, in particular to a natural gas-air mixing device. Background Art

[0002] Natural gas is widely used as an industrial fuel. Natural gas needs to be mixed with air before combustion. Due to the different densities of natural gas and compressed air, compressed air and natural gas cannot be effectively mixed in a smooth gas pipeline and cannot achieve the ideal combustion effect. A moderation device is needed to effectively mix the two.

[0003] However, the existing gas mixing device cannot accurately control the ratio to stably and evenly mix the gas and air, resulting in deterioration of the gas quality. When burning in different environments, the corresponding proportion of gas cannot be delivered, resulting in the gas not being able to exert its due energy efficiency. Natural gas has low combustion efficiency and incomplete combustion during combustion, which also causes energy waste. Utility Model Content

[0004] In view of the above problems existing in the prior art, the utility model provides a natural gas-air mixing device, which effectively mixes air and natural gas through two mixing chambers to improve the combustion efficiency of natural gas.

[0005] To achieve the above purpose, the utility model adopts the following technical solution: a natural gas air mixing device, comprising:

[0006] A first gas mixing chamber, the first gas mixing chamber is provided with an air intake pipe, a natural gas intake pipe, a first cylinder, and a second cylinder, and a mixing plate is also provided in the first gas mixing chamber, the air intake pipe and the natural gas intake pipe are relatively arranged on both sides of the first gas mixing chamber, and there are two mixing plates, the output end of the first cylinder and the output end of the second cylinder extend into the first gas mixing chamber, and the two mixing plates are respectively installed at the output end of the first cylinder and the output end of the second cylinder, and an air outlet is provided at the bottom of the first gas mixing chamber;

[0007] A second air mixing chamber, wherein an air guide plate is provided on the second air mixing chamber, an air inlet is provided at a side end of the second air mixing chamber, a mixed air outlet pipe is provided at the top end, an outer wall of the air guide plate and an inner wall of the second air mixing chamber form a spiral air mixing passage, an inlet of the spiral air mixing passage is connected with the air inlet, and an outlet of the spiral air mixing passage is connected with the mixed air outlet pipe; a motor is also provided on the second air mixing chamber, a mixed air fan is installed at an output end of the motor, and the mixed air fan is located at the center of the mixed air outlet pipe;

[0008] A gas mixing pipe, used to connect the gas outlet and the gas inlet;

[0009] The controller is used to connect and control the gas flow regulating valve, the first cylinder, the second cylinder, the motor and the gas flow regulating valve. The gas flow regulating valve is correspondingly installed on the air intake pipe, the natural gas intake pipe and the mixed gas outlet pipe.

[0010] Furthermore, the output end of the motor is connected to a rotating shaft, the air mixing fan is mounted on the rotating shaft, and the height of the rotating shaft is smaller than the height of the second air mixing chamber.

[0011] Furthermore, a sliding groove which is slidably matched with the mixing plate is formed on the side wall of the first mixing chamber.

[0012] Furthermore, a plurality of air holes are formed on the mixing plate, and the air holes are evenly arranged on the mixing plate.

[0013] Furthermore, the intake ratio of natural gas to air in the air intake pipe and the natural gas intake pipe is 1:9.52.

[0014] Beneficial effects of the utility model:

[0015] The present application provides a natural gas-air mixing device, which effectively mixes natural gas and air based on two mixing chambers, improves combustion efficiency, reduces energy waste, and flexibly controls the mixing ratio of the mixed gas by controlling the valve through a controller to adjust the air intake volume to meet user needs. The device can reduce harmful substances emitted by gas equipment during the combustion process, thereby achieving energy-saving and environmental protection effects. The device has a simple structure, good mixing effect, and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the second gas mixing chamber of the utility model;

[0018] In the figure, 1 is the first air mixing chamber, 2 is the air regulating valve, 3 is the air intake pipe, 4 is the natural gas intake pipe, 5 is the natural gas regulating valve, 61 is the first cylinder, 62 is the second cylinder, 7 is the air mixing plate, 8 is the air mixing pipeline, 9 is the second air mixing chamber, 10 is the air guide plate, 11 is the motor, 12 is the rotating shaft, 13 is the air mixing fan, 14 is the air outlet regulating valve, and 15 is the mixed gas outlet pipe. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0020] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] like Figure 1 The natural gas-air mixing device shown comprises: a first gas mixing chamber 1 , a second gas mixing chamber 9 , and a controller. A gas mixing pipe 8 is connected between the first gas mixing chamber 1 and the second gas mixing chamber 9 .

[0024] The first gas mixing chamber 1 is provided with an air intake pipe 3, a natural gas intake pipe 4, a first cylinder 61, and a second cylinder 62, and a gas mixing plate 7 is provided in the first gas mixing chamber 1. The air intake pipe 3 and the natural gas intake pipe 4 are arranged on both sides of the first gas mixing chamber 1, and an air regulating valve 2 is installed on the air intake pipe 3, and a natural gas regulating valve 5 is installed on the natural gas intake pipe 4. Both the air regulating valve 2 and the natural gas regulating valve 5 are gas flow regulating valves, and the ratio of the air input to the natural gas input in the device is adjusted by adjusting the opening of the flow regulating valve.

[0025] There are two mixing plates 7, and the upper and lower side walls of the first mixing chamber 1 are provided with sliding grooves for slidingly cooperating with the mixing plates 7; at the same time, the first cylinder 61 and the second cylinder 62 are also relatively arranged on both sides of the first mixing chamber 1, and one mixing plate 7 is connected to the first cylinder 61 arranged on the left, and the other mixing plate 7 is connected to the second cylinder 62 arranged on the right. Specifically, the output end of the first cylinder 61 and the output end of the second cylinder 62 penetrate the first mixing chamber 1 and are connected to the mixing plates 7, and the mixing plates 7 are pushed to move in the first mixing chamber 1 by the first cylinder 61 and the second cylinder 62. The mixing plates 7 are evenly provided with air holes for gas to pass through, and the gas in the first mixing chamber 1 is stirred by the mixing plates 7 during the movement of the mixing plates 7, so as to further promote gas mixing and prevent gas stratification.

[0026] An air outlet is provided at the bottom of the first mixing chamber 1, and an air inlet is provided on the left side of the second mixing chamber 9. The air outlet on the first mixing chamber 1 is connected to the input end of the mixing pipe 8, and the air inlet of the second mixing chamber 9 is connected to the output end of the mixing pipe 8.

[0027] like Figure 2 The second gas mixing chamber 9 is shown to be provided with a mixed gas outlet pipe 15, which is provided at the top of the second gas mixing chamber 9 for outputting the mixed gas, and the mixed gas outlet pipe 15 is installed with a gas outlet regulating valve 14 for controlling the output gas flow rate.

[0028] The second gas mixing chamber 9 is also sealed with an air guide plate 10, which is a spiral plate tightly connected to the upper wall and the lower wall of the second gas mixing chamber 9, and a spiral gas mixing passage is formed between the outer wall of the air guide plate 10 and the inner wall of the second gas mixing chamber 9. The inlet of the spiral gas mixing passage is connected to the air inlet of the second gas mixing chamber 9, and the outlet of the spiral gas mixing passage is connected to the mixed gas outlet pipe 15. After the mixed gas is input from the air inlet of the second gas mixing chamber 9, it is continuously mixed in the spiral gas mixing passage, and finally output to the mixed gas outlet pipe 15, and then output from the mixed gas outlet pipe 15.

[0029] In order to further enhance the mixing effect, a motor 11 is provided on the second mixing chamber 9, and a rotating shaft 12 is installed at the output end of the motor 11. The rotating shaft 12 extends to the center of the second mixing chamber 9, and the height of the rotating shaft 12 is less than the height of the second mixing chamber 9. A mixing fan 13 is provided at the extending end of the rotating shaft 12. The mixing fan 13 is rotated based on the motor 11 to enhance the gas mixing effect. The mixed gas outlet pipe 15 is arranged directly above the mixing fan 13.

[0030] The device is also provided with a controller, which is used to connect the air regulating valve 2, the natural gas regulating valve 5, the cylinder, the motor 11 and the air outlet regulating valve 14. The controller controls the opening of the air regulating valve 2 and the natural gas regulating valve 5 to adjust the intake flow of natural gas and air, accurately controls the proportion of stable and uniform mixing of gas and air, and delivers corresponding proportions of gas for combustion in different environments; controls the cylinder to adjust the movement speed of the mixing plate 7, controls the motor 11 to adjust the rotation frequency of the mixing fan 13, and controls the opening of the air outlet regulating valve 14 to adjust the flow of the output mixed gas.

[0031] In one embodiment, the controller adjusts the opening of the air regulating valve 2 and the natural gas regulating valve 5 so that the intake ratio of natural gas to air is 1:9.52. The main component of natural gas is methane. When natural gas burns, one methane molecule burns with two oxygen molecules to obtain one carbon dioxide molecule and two water molecules. A unit volume of methane requires twice the volume of oxygen to be fully burned. The content of oxygen in the air is 21%, so a unit volume of methane requires 9.52 times the air to be fully burned.

[0032] Finally, it should be noted that, in this article, relationships such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms include, include or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0034] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A natural gas-air mixing device, characterized in that: include: A first gas mixing chamber, the first gas mixing chamber is provided with an air intake pipe, a natural gas intake pipe, a first cylinder, and a second cylinder, and a mixing plate is also provided in the first gas mixing chamber, the air intake pipe and the natural gas intake pipe are relatively arranged on both sides of the first gas mixing chamber, and there are two mixing plates, the output end of the first cylinder and the output end of the second cylinder extend into the first gas mixing chamber, and the two mixing plates are respectively installed at the output end of the first cylinder and the output end of the second cylinder, and an air outlet is provided at the bottom of the first gas mixing chamber; A second air mixing chamber, wherein an air guide plate is provided on the second air mixing chamber, an air inlet is provided at a side end of the second air mixing chamber, a mixed air outlet pipe is provided at the top end, an outer wall of the air guide plate and an inner wall of the second air mixing chamber form a spiral air mixing passage, an inlet of the spiral air mixing passage is connected with the air inlet, and an outlet of the spiral air mixing passage is connected with the mixed air outlet pipe; a motor is also provided on the second air mixing chamber, a mixed air fan is installed at an output end of the motor, and the mixed air fan is located at the center of the mixed air outlet pipe; A gas mixing pipe, used to connect the gas outlet and the gas inlet; A controller is used to connect and control the gas flow regulating valve, the first cylinder, the second cylinder, and the motor. The gas flow regulating valve is correspondingly installed on the air intake pipe, the natural gas intake pipe, and the mixed gas outlet pipe.

2. The natural gas-air mixing device according to claim 1, characterized in that: The output end of the motor is connected to a rotating shaft, the air mixing fan is mounted on the rotating shaft, and the height of the rotating shaft is smaller than the height of the second air mixing chamber.

3. The natural gas-air mixing device according to claim 1, characterized in that: The side wall of the first gas mixing chamber is provided with a sliding groove which is slidably matched with the gas mixing plate.

4. The natural gas-air mixing device according to claim 1, characterized in that: The gas mixing plate is provided with a plurality of air holes, and the air holes are evenly arranged on the gas mixing plate.

5. The natural gas-air mixing device according to claim 1, characterized in that: The intake ratio of natural gas to air in the air intake pipe and the natural gas intake pipe is 1:9.52.

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