Air inlet unit and air inlet system for quartz tube expansion

Abstract

The utility model discloses a gas inlet unit and a gas inlet system for quartz tube expansion, and the gas inlet unit comprises a combustion-supporting gas pipeline, a fuel gas pipeline, a converging pipeline, a tube expansion ignition device and an electronic flowmeter. And the combustion-supporting gas pipeline is configured for introducing combustion-supporting gas. The fuel gas pipeline is configured to allow fuel gas to be introduced. Combustion-supporting gas discharged from the combustion-supporting gas pipeline and fuel gas discharged from the fuel gas pipeline can be converged in the converging pipeline to form mixed gas of the combustion-supporting gas and the fuel gas. The tube expanding ignition device is configured to receive and ignite the mixed gas to heat the quartz tube. The combustion-supporting gas pipeline and the fuel gas pipeline are each provided with an electronic flowmeter, and the gas inlet unit is configured to control the valve opening degree of the corresponding electronic flowmeter according to the flow preset value of each electronic flowmeter. The air inlet unit disclosed by the utility model solves the problems that manual air adjustment is not accurate and the time consumed in the adjustment process is long.

Description

Technical Field

[0001] The utility model relates to an air intake system, in particular to an air intake unit and an air intake system for quartz tube expansion. Background Art

[0002] In the existing air intake system for quartz expansion tube, the fuel gas inlet and the combustion-supporting gas inlet of the expansion tube ignition device are respectively provided with a fuel gas valve and a combustion-supporting gas valve, and the outlets of the fuel gas valve and the combustion-supporting gas valve are respectively provided with rotor flowmeters, which are responsible for measuring the flow of combustion gas such as hydrogen and the flow of combustion-supporting gas such as oxygen. The fuel gas valve and the combustion-supporting gas valve are responsible for controlling the flow of fuel gas and combustion-supporting gas flowing into the expansion tube ignition device.

[0003] When the air intake system is working, for different pipes, the operator needs to manually adjust the fuel gas valve and the combustion-supporting gas valve to obtain the flow that matches the corresponding pipe. This manual adjustment method has the disadvantages of inaccurate gas flow adjustment and a long adjustment process. In addition, every time the fuel gas valve and the combustion-supporting gas valve are opened, the rotor in the corresponding rotor flowmeter hits the anti-collision block due to the overflow, causing the anti-collision block to break microscopically and contaminate the fuel and combustion-supporting gas.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0005] Purpose of the utility model: The technical problem to be solved by the first aspect of the utility model is to provide an air intake unit for quartz tube expansion in response to the shortcomings of the prior art, which solves the problem of inaccurate manual air adjustment and time-consuming adjustment process in the prior art.

[0006] In order to solve the above technical problems, the first aspect of the utility model discloses an air intake unit for quartz tube expansion, which includes a combustion-supporting gas pipeline, a fuel gas pipeline, a converging pipeline, a tube expansion ignition device and an electronic flow meter. The combustion-supporting gas pipeline is configured to supply combustion-supporting gas. The fuel gas pipeline is configured to supply fuel gas. The combustion-supporting gas discharged from the combustion-supporting gas pipeline and the fuel gas discharged from the fuel gas pipeline can be merged in the converging pipeline to form a mixed gas of combustion-supporting gas and fuel gas. The tube expansion ignition device is configured to receive and ignite the mixed gas to heat the quartz tube. The combustion-supporting gas pipeline and the fuel gas pipeline are respectively provided with electronic flow meters, and the air intake unit is configured to control the valve opening of the corresponding electronic flow meter according to the preset flow value of each electronic flow meter.

[0007] Specifically, the combustion-supporting gas is oxygen and the fuel gas is hydrogen.

[0008] Specifically, the tube expansion ignition device is an ignition lamp holder.

[0009] The second aspect of the utility model further discloses an air intake system for quartz tube expansion, the air intake system comprises a combustion-supporting gas supply pipeline, a fuel gas supply pipeline and the above-mentioned air intake unit for quartz tube expansion. The air intake units are provided in plurality. The air intake end of the combustion-supporting gas pipeline of each air intake unit is connected in parallel to the combustion-supporting gas supply pipeline. The air intake end of the fuel gas pipeline of each air intake unit is connected in parallel to the fuel gas supply pipeline.

[0010] Specifically, two expansion tube ignition devices are respectively provided in each of the air intake units, and the air intake ends of the two expansion tube ignition devices are connected in parallel to the air outlet end of the converging pipeline of the air intake unit.

[0011] Specifically, the two tube expansion ignition devices of the same air intake unit are symmetrically arranged on both sides of the quartz tube. The tube expansion ignition devices in all air intake units are commonly arranged around the outer periphery of the quartz tube and spaced apart from the quartz tube.

[0012] Specifically, the air intake system includes a controller, which is configured to control the valve opening of the corresponding electronic flow meter according to the preset flow value of each electronic flow meter.

[0013] Specifically, the air intake system includes a human-computer interaction input and display device, which is electrically connected to the controller and is configured to set the preset flow value of each electronic flow meter and transmit the corresponding preset flow value to the controller, as well as to provide real-time feedback on the fluid flow detection results of each electronic flow meter.

[0014] Specifically, the controller is a PLC controller. The human-machine interaction input and display device is electrically connected to the PLC controller via a Modbus communication cable. The PLC controller is serially connected to each electronic flow meter via a Modbus communication cable.

[0015] Specifically, the human-machine interaction input and display device is a display device equipped with a human-machine interaction interface.

[0016] Beneficial effects:

[0017] 1. The air intake unit disclosed in the utility model controls the valve opening of the corresponding electronic flow meter according to the preset flow value of each electronic flow meter, and flexibly sets the flow online. Compared with the manual adjustment method, the gas flow is adjusted more accurately. At the same time, the utility model adopts an electronic flow meter instead of a rotor flow meter, avoiding overshoot and jump of the rotor flow meter, and improving the stability of the expansion tube ignition device.

[0018] 2. The air intake system disclosed in the utility model can set the preset flow value of each electronic flow meter through the human-computer interaction input and display device and transmit the corresponding preset flow value to the controller, and provide real-time feedback on the fluid flow detection results of each electronic flow meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, and the above and / or other advantages of the present invention will become more clear.

[0020] Figure 1 This embodiment discloses a structural schematic diagram of an air intake system for quartz tube expansion.

[0021] Description of the accompanying drawings:

[0022] 1. Combustion gas pipeline; 2. Fuel gas pipeline; 3. Junction pipeline; 4. Pipe expansion ignition device; 5. Quartz tube; 6. Electronic flow meter; 7. Combustion gas supply pipeline; 8. Fuel gas supply pipeline; 9. Controller; 10. Human-computer interaction input and display device. DETAILED DESCRIPTION

[0023] Example 1

[0024] This embodiment discloses an air intake unit for quartz tube expansion, see Figure 1 The air intake unit includes a combustion-supporting gas pipeline 1, a fuel gas pipeline 2, a converging pipeline 3, a tube expansion ignition device 4 and an electronic flow meter 6. The combustion-supporting gas pipeline 1 is configured to supply combustion-supporting gas. The fuel gas pipeline 2 is configured to supply fuel gas. The combustion-supporting gas discharged from the combustion-supporting gas pipeline 1 and the fuel gas discharged from the fuel gas pipeline 2 can be merged in the converging pipeline 3 to form a mixed gas of the combustion-supporting gas and the fuel gas. The tube expansion ignition device 4 is configured to receive and ignite the mixed gas to heat the quartz tube 5. The combustion-supporting gas pipeline 1 and the fuel gas pipeline 2 are respectively provided with electronic flow meters 6, and the air intake unit is configured to control the valve opening of the electronic flow meter 6 according to the preset flow value of each electronic flow meter 6.

[0025] Compared with the manual valve adjustment method in the traditional air intake system, the air intake unit controls the valve opening of the electronic flow meter 6 according to the preset flow value of each electronic flow meter 6, which can keep the valve opening stable, avoid overshoot and jump, and thus avoid contaminating the fuel and combustion-supporting gas.

[0026] Specifically, the combustion-supporting gas is oxygen and the fuel gas is hydrogen.

[0027] Specifically, the expanded tube ignition device 4 is an ignition lamp holder.

[0028] This embodiment also discloses an air intake system for quartz tube expansion, see Figure 1The air intake system includes a combustion-supporting gas supply pipeline 7, a fuel gas supply pipeline 8, and the above-mentioned intake unit for quartz tube expansion. Four intake units are provided. The intake end of the combustion-supporting gas pipeline 1 of each intake unit is connected in parallel to the combustion-supporting gas supply pipeline 7. The intake end of the fuel gas pipeline 2 of each intake unit is connected in parallel to the fuel gas supply pipeline 8.

[0029] It should be understood that the number of air intake units in this embodiment is not limited to four, but can be set to more or less.

[0030] In a specific embodiment, see Figure 1 The tube expansion ignition devices 4 in the four air intake units simultaneously ignite and heat the quartz tube 5 to expand the tube.

[0031] Specifically, see Figure 1 Each air intake unit is provided with two expansion tube ignition devices 4, and the air intake ends of the two expansion tube ignition devices 4 are connected in parallel to the air outlet end of the converging pipeline 3 of the air intake unit.

[0032] Specifically, see Figure 1 The two expansion tube ignition devices 4 of the same air intake unit are symmetrically arranged on both sides of the quartz tube 5. Figure 1 The expansion tube ignition devices 4 in all the air intake units are arranged around the outer periphery of the quartz tube 5 and are spaced apart from the quartz tube 5 .

[0033] Specifically, see Figure 1 The air intake system includes a controller 9, which is configured to control the valve opening of the corresponding electronic flow meter 6 according to the preset flow value of each electronic flow meter 6.

[0034] Specifically, see Figure 1 The air intake system includes a human-machine interactive input and display device 10, which is electrically connected to the controller 9 and is configured to be able to set the flow preset value of each electronic flow meter 6 and transmit the corresponding flow preset value to the controller 9, as well as to provide real-time feedback on the fluid flow detection results of each electronic flow meter 6.

[0035] Specifically, the controller 9 is a PLC controller. The human-machine interaction input and display device 10 is electrically connected to the PLC controller via a Modbus communication cable. The PLC controller is serially connected to each electronic flow meter 6 via a Modbus communication cable.

[0036] Specifically, the human-machine interaction input and display device 10 is a display device equipped with a human-machine interaction interface.

[0037] In the present application, the electronic flow meter 6 has the functions of both a flow meter and a regulating valve, and commercially available products can be selected. Specifically, the electronic flow meter 6 arranged on the combustion-supporting gas pipeline 1 selects an electronic flow meter of model F-206AI-AGD-00-V, and the electronic flow meter 6 arranged on the fuel gas pipeline 2 selects an electronic flow meter of model D-6381-AAD-00-VSD-DA-000 / F-003AI.

[0038] Example 2

[0039] Different from the human-computer interaction input and display device 10 in Embodiment 1, the human-computer interaction input and display device in this embodiment includes a human-computer interaction input unit and a display unit, wherein the human-computer interaction input unit is a keyboard and the display unit is a display.

[0040] In this embodiment, the preset flow value of each electronic flow meter 6 is input through the keyboard, and the fluid flow detection result of each electronic flow meter 6 is fed back through the display.

[0041] The utility model provides an idea and method for an air intake unit and an air intake system for quartz tube expansion. There are many methods and ways to implement the technical solution. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications should also be regarded as the protection scope of the utility model. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An air intake unit for quartz tube expansion, characterized in that: include: The auxiliary gas pipeline (1) is configured to supply auxiliary gas; A fuel gas pipeline (2) is configured to allow fuel gas to flow in; A merging pipeline (3), wherein the oxidizing gas discharged from the oxidizing gas pipeline (1) and the fuel gas discharged from the fuel gas pipeline (2) merge into the merging pipeline (3) to form a mixed gas of the oxidizing gas and the fuel gas; a tube expansion ignition device (4), configured to receive and ignite the mixed gas to heat the quartz tube (5); And electronic flow meters (6) are respectively arranged on the combustion-supporting gas pipeline (1) and the fuel gas pipeline (2), and the air intake unit is configured to control the valve opening of the corresponding electronic flow meter (6) according to the preset flow value of each electronic flow meter (6).

2. The air intake unit for quartz tube expansion according to claim 1, characterized in that: The combustion-supporting gas is oxygen; the fuel gas is hydrogen.

3. The air intake unit for quartz tube expansion according to claim 2, characterized in that: The expanded tube ignition device (4) is an ignition lamp holder.

4. An air intake system for quartz tube expansion, characterized in that: It comprises a combustion-supporting gas supply pipeline (7), a fuel gas supply pipeline (8) and an air intake unit for quartz tube expansion according to any one of claims 1 to 3; the air intake units are provided in plurality; the air intake end of the combustion-supporting gas pipeline (1) of each air intake unit is connected in parallel to the combustion-supporting gas supply pipeline (7); the air intake end of the fuel gas pipeline (2) of each air intake unit is connected in parallel to the fuel gas supply pipeline (8).

5. The air intake system for quartz tube expansion according to claim 4, characterized in that: Two expansion tube ignition devices (4) are respectively provided in each of the air intake units, and the air intake ends of the two expansion tube ignition devices (4) are connected in parallel to the air outlet end of the converging pipeline (3) of the air intake unit.

6. The air intake system for quartz tube expansion according to claim 5, characterized in that: The two tube expansion ignition devices (4) of the same air intake unit are symmetrically arranged on both sides of the quartz tube (5).

7. The air intake system for quartz tube expansion according to claim 6, characterized in that: It comprises a controller (9), wherein the controller (9) is configured to control the valve opening of the corresponding electronic flow meter (6) according to the preset flow value of each electronic flow meter (6).

8. The air intake system for quartz tube expansion according to claim 7, characterized in that: The invention comprises a human-machine interactive input and display device (10), wherein the human-machine interactive input and display device (10) is electrically connected to the controller (9) and is configured to be able to set a preset flow value of each electronic flow meter (6) and transmit the corresponding preset flow value to the controller (9), as well as to provide real-time feedback on the fluid flow detection results of each electronic flow meter (6).

9. The air intake system for quartz tube expansion according to claim 8, characterized in that: The controller (9) is a PLC controller; the human-machine interaction input and display device (10) is electrically connected to the PLC controller via a Modbus communication cable; and the PLC controller is serially connected to each electronic flow meter (6) via a Modbus communication cable.

10. The air intake system for quartz tube expansion according to claim 9, characterized in that: The human-machine interactive input and display device (10) is a display device equipped with a human-machine interactive interface.

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