A full-condition burner

Abstract

This invention discloses a full-condition burner, comprising: a combustion chamber, the tail end of which is connected to a first compressed air pipeline and a natural gas pipeline, the first compressed air pipeline being equipped with a first compressed air flow valve, and the natural gas pipeline being equipped with a natural gas flow valve; an electric heating chamber, the tail end of which is connected to a second compressed air pipeline, the second compressed air pipeline being equipped with a second compressed air flow valve, and the head end of the electric heating chamber being connected to a heat outlet branch pipe, which is connected to the heat outlet pipeline; the burner includes a combustion chamber and an electric heating chamber, the combustion chamber enabling test conditions ranging from medium to high temperatures to high temperatures, and the electric heating chamber enabling test conditions ranging from low temperatures to medium temperatures to medium temperatures; the test pressure is controlled by the compressed air flow valve; thus, this burner can cover all operating conditions, including low temperature and low pressure, medium temperature and medium pressure, and high temperature and high pressure, and has good application prospects and a wide range of applications.

Description

Technical Field

[0001] This invention relates to the field of automotive exhaust testing equipment technology, and more specifically to a full-condition burner. Background Technology

[0002] Currently, in automotive exhaust testing, thermal shock testing, temperature distribution testing, and urea durability testing often use engine benches or burners as heat source equipment. However, due to the high cost and long preparation time of engine benches, burners are usually used as the heat source equipment.

[0003] Combustion burners using natural gas as fuel can generally operate under conditions such as low temperature and low pressure, medium temperature and medium pressure, or high temperature and high pressure. However, no single burner can cover all operating conditions in terms of temperature and pressure, which is why different burners are required for various automotive exhaust tests.

[0004] In addition, some special operating conditions are difficult to achieve with burners, such as low temperature and high pressure conditions. These conditions require the combustion chamber to be started first to reach a preset temperature, and then pressurized by compressed air. However, the flame in the combustion chamber is very small under low temperature conditions, and the high pressure air can easily blow out the flame, so these conditions are difficult to achieve.

[0005] Therefore, how to provide a heat source device for automotive exhaust testing that can meet the needs of various working conditions is a problem that urgently needs to be solved by those in the field. Summary of the Invention

[0006] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art.

[0007] Therefore, one object of the present invention is to provide a burner for all operating conditions, comprising:

[0008] The combustion chamber has a first compressed air pipeline and a natural gas pipeline connected to its tail end. The first compressed air pipeline is equipped with a first compressed air flow valve, and the natural gas pipeline is equipped with a natural gas flow valve. The heat outlet pipeline at the head end of the combustion chamber is connected to the workpiece to be tested.

[0009] An electric heating chamber is provided with an electric heating element. The tail end of the electric heating chamber is connected to a second compressed air pipe, and a second compressed air flow valve is provided on the second compressed air pipe. The head end of the electric heating chamber is connected to a heat outlet branch pipe, and the heat outlet branch pipe is connected to the heat outlet pipe.

[0010] The beneficial effects of this invention are:

[0011] The burner is equipped with a combustion chamber and an electric heating chamber. The combustion chamber can achieve test conditions in the medium-high temperature range and high temperature range, while the electric heating can achieve test conditions in the low temperature, medium temperature, and medium-low temperature range. The test pressure is controlled by a compressed air flow valve. This allows the burner to cover all working conditions such as low temperature and low pressure, medium temperature and medium pressure, and high temperature and high pressure, which has good application prospects and a wide range of applications.

[0012] In particular, the burner in this invention can also achieve some special operating conditions, such as low temperature and high pressure; under such conditions, the temperature is provided by an electric heating chamber, and the pressure is controlled by the second compressed air flow valve at the tail end of the electric heating chamber.

[0013] Among the aforementioned beneficial effects, the low temperature range is: room temperature - 260 degrees Celsius; the medium temperature range is: 260-650 degrees Celsius; the high temperature range is: 650-1150 degrees Celsius; the low pressure range is: 0-15 kPa; the medium pressure range is: 16 kPa-70 kPa; and the high pressure range is: 70 kPa-200 kPa.

[0014] Furthermore, it also includes:

[0015] A lifting platform, wherein the combustion chamber and the electric heating chamber are disposed on the lifting platform;

[0016] The first lead screw, which is vertically positioned below the lifting platform, is...

[0017] The upper end of the lead screw is fixedly connected to the lifting platform;

[0018] The second lead screw is horizontally positioned, with one end connected to the lower end of the first lead screw and the other end connected to the servo motor.

[0019] The beneficial effects of adopting the above technical solution are:

[0020] Automotive exhaust pipes can be horizontal or vertical, and their different orientations will result in different distances between the product inlet (i.e., the connection between the test piece and the heat outlet pipe) and the ground. In order to meet the testing requirements of various models of products, the combustion chamber and the electric heating chamber are set on a lifting platform that can move up and down to improve its adaptability.

[0021] Furthermore, there are two first lead screws, which are respectively located near the two ends of the lifting platform.

[0022] The first lead screw is actually the direct power source for pushing the lifting platform up and down. To avoid instability in the lifting platform's movement, one lead screw is installed at each end of the lifting platform.

[0023] Furthermore, it also includes: a base frame, a lead screw seat provided at the lower end of the first lead screw, the first lead screw and the second lead screw extending into the lead screw seat and being connected in transmission; the lead screw seat and the servo motor are mounted on the base frame; rollers are mounted on the lower surface of the base frame; and a housing is mounted on the base frame, with the lifting platform, combustion chamber and electric heating chamber located inside the housing.

[0024] The beneficial effects of adopting the above technical solution are:

[0025] The entire testing equipment is housed in a base frame and outer casing, which protects the equipment and allows it to be easily moved using unique casters.

[0026] Furthermore, it also includes: an optical axis, which is vertically arranged, with its lower end fixedly connected to the base frame and its upper end passing through the lifting platform, and the lifting platform being able to slide up and down along the optical axis.

[0027] The optical axis is used to position the lifting platform, preventing it from shifting during lifting and lowering, and further improving the stability of the lifting platform.

[0028] Furthermore, it also includes a controller, a temperature measurement module, a pressure measurement module, an ignition module, a temperature sensor, and a pressure sensor. The controller, temperature measurement module, and pressure measurement module are disposed on the housing, the ignition module is disposed in the combustion chamber, and the temperature sensor and pressure sensor are disposed at the pipe opening of the heat outlet pipe. The first compressed air flow valve, the second compressed air flow valve, the natural gas flow valve, the ignition module, the electric heating element, the temperature sensor, and the pressure sensor are all electrically connected to the controller.

[0029] It also includes a display screen, which is disposed on the housing and electrically connected to the controller.

[0030] The beneficial effects of adopting the above technical solution are:

[0031] The controller can control the start, stop, and switch between the combustion chamber and the electric heating chamber. The sensors can also detect the temperature and pressure test conditions in real time. In addition, the detected data can be displayed on the screen so that the test personnel can understand the test conditions in a timely manner. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the external structure of this embodiment;

[0034] Figure 2 This is a schematic diagram of the internal structure of this embodiment;

[0035] Figure 3 This is a front view of this embodiment;

[0036] Figure 4 This is a schematic diagram of the combustion chamber and electric heating chamber in this embodiment;

[0037] Figure 5 This is a schematic diagram of the lifting platform in this embodiment;

[0038] Figure 6 This is a schematic diagram showing the positional relationship between the first lead screw, the second lead screw, and the lead screw seat in this embodiment.

[0039] Among them, 1-combustion chamber, 101-heat outlet pipe, 2-electric heating chamber, 201-heat outlet branch pipe, 3-natural gas pipeline, 4-first compressed air flow valve, 5-lifting platform, 6-first lead screw, 7-second lead screw, 8-servo motor, 9-base frame, 10-outer shell, 11-roller, 12-optical shaft, 13-lead screw seat, 14-second compressed air flow valve. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] This invention discloses a full-condition burner, characterized in that it comprises:

[0046] Combustion chamber 1, the tail end of combustion chamber 1 is connected to a first compressed air pipeline and a natural gas pipeline 3, a first compressed air flow valve 4 is installed on the first compressed air pipeline, and a natural gas flow valve is installed on the natural gas pipeline 3; the heat outlet pipeline 101 at the head end of combustion chamber 1 is connected to the workpiece to be tested.

[0047] The electric heating chamber 2 contains an electric heating element. The tail end of the electric heating chamber 2 is connected to a second compressed air pipe. A second compressed air flow valve 14 is installed on the second compressed air pipe. The head end of the electric heating chamber 2 is connected to a heat outlet branch pipe 201, which is connected to the heat outlet pipe 101.

[0048] In this embodiment, the system also includes a lifting platform 5, on which the combustion chamber 1 and the electric heating chamber 2 are disposed; a first lead screw 6, which is vertically disposed below the lifting platform 5, with its upper end fixedly connected to the lifting platform 5; and a second lead screw 7, which is horizontally disposed, with one end of its drive connection to the lower end of the first lead screw 6 and the other end of its drive connection to the servo motor 8.

[0049] In this embodiment, it further includes: a base frame 9, a lead screw seat 13 is provided at the lower end of the first lead screw 6, the first lead screw 6 and the second lead screw 7 extend into the lead screw seat 13 and are connected in a transmission manner; the lead screw seat 13 and the servo motor 8 are disposed on the base frame 9; a roller 11 is disposed on the lower surface of the base frame 9; and a housing 10 is disposed on the base frame 9, and the lifting platform 5, the combustion chamber 1 and the electric heating chamber 2 are located inside the housing 10.

[0050] In this embodiment, it also includes: an optical axis 12, which is vertically arranged, with its lower end fixedly connected to the base frame 9 and its upper end passing through the lifting platform 5, and the lifting platform 5 being able to slide up and down along the optical axis 12.

[0051] In this embodiment, the system also includes a controller, a temperature measurement module, a pressure measurement module, an ignition module, a temperature sensor, and a pressure sensor. The controller, temperature measurement module, and pressure measurement module are mounted on the housing 10. The ignition module is located inside the combustion chamber 1. The temperature sensor and pressure sensor are located at the outlet of the heat outlet pipe 101. The first compressed air flow valve 4, the second compressed air flow valve 14, the natural gas flow valve, the ignition module, the electric heating element, the temperature sensor, and the pressure sensor are all electrically connected to the controller.

[0052] The beneficial effects of this invention are:

[0053] The burner is equipped with a combustion chamber and an electric heating chamber. The combustion chamber can achieve test conditions in the medium-high temperature range and high temperature range, while the electric heating can achieve test conditions in the low temperature, medium temperature, and medium-low temperature range. The test pressure is controlled by a compressed air flow valve. This allows the burner to cover all working conditions such as low temperature and low pressure, medium temperature and medium pressure, and high temperature and high pressure, which has good application prospects and a wide range of applications.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A burner suitable for all operating conditions, characterized in that, include: The combustion chamber has a first compressed air pipeline and a natural gas pipeline connected to its tail end. The first compressed air pipeline is equipped with a first compressed air flow valve, and the natural gas pipeline is equipped with a natural gas flow valve. The heat outlet pipeline at the head end of the combustion chamber is connected to the workpiece to be tested. An electric heating chamber is provided with an electric heating element. The tail end of the electric heating chamber is connected to a second compressed air pipe, and a second compressed air flow valve is provided on the second compressed air pipe. The head end of the electric heating chamber is connected to a heat outlet branch pipe, and the heat outlet branch pipe is connected to the heat outlet pipe.

2. The all-condition burner according to claim 1, characterized in that, Also includes: A lifting platform, wherein the combustion chamber and the electric heating chamber are disposed on the lifting platform; The first lead screw, which is vertically positioned below the lifting platform, is... The upper end of the lead screw is fixedly connected to the lifting platform; The second lead screw is horizontally positioned, with one end connected to the lower end of the first lead screw and the other end connected to the servo motor.

3. A full-condition burner according to claim 2, characterized in that, There are two lead screws, which are respectively located near the two ends of the lifting platform.

4. A full-condition burner according to claim 2, characterized in that, Also includes: The base frame has a lead screw seat at the lower end of the first lead screw, and the first lead screw and the... The second lead screw extends into the lead screw holder and is connected for transmission; the lead screw holder and the servo motor are mounted on the base frame; Rollers are disposed on the lower surface of the base frame; The housing is mounted on the base frame, and the lifting platform, combustion chamber, and electric heating chamber are located inside the housing.

5. A full-condition burner according to claim 4, characterized in that, Also includes: The optical axis is vertically arranged, with its lower end fixedly connected to the base frame and its upper end passing through the lifting platform. The lifting platform can slide up and down along the optical axis.

6. A full-condition burner according to claim 4, characterized in that, It also includes a controller, a temperature measurement module, a pressure measurement module, an ignition module, a temperature sensor, and a pressure sensor. The controller, temperature measurement module, and pressure measurement module are disposed on the housing. The ignition module is disposed in the combustion chamber. The temperature sensor and pressure sensor are disposed at the pipe opening of the heat outlet pipe. The first compressed air flow valve, the second compressed air flow valve, the natural gas flow valve, the ignition module, the electric heating element, the temperature sensor, and the pressure sensor are all electrically connected to the controller.

7. A full-condition burner according to claim 6, characterized in that, It also includes a display screen, which is disposed on the housing and electrically connected to the controller.

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