Radiant tube heater
By designing burners, purge pipes and gas monitoring devices in the radiation tube heater, the problem of gas residues prone to explosions is solved, and safe gas removal and resource conservation are achieved.
Patent Information
- Application Number
- CN202421775670.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The remaining gas in the gas radiation tube can easily cause explosions and endanger the safety of equipment and personnel.
A radiation tube heater is designed, including a burner, a purge pipe and a gas monitoring device. By conveying purge gas into the burner, the residual gas is removed and the gas concentration is detected through the gas monitoring device to ensure safety.
It effectively avoids explosion accidents caused by gas residues, ensures the safety of equipment and personnel, and at the same time, the purge process is optimized through the gas monitoring device, saving gas use.
Smart Images
Figure CN222881170U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of industrial heating, in particular to a radiation tube heater. Background Art
[0002] The working principle of the gas radiant tube is to generate heat by burning gas and transfer the heat to the heated object by radiation. However, in some cases, due to improper mixing ratio of gas and air, burner design problems or improper operation, the gas may not be burned completely, resulting in gas residue. And because the space inside the radiant tube is relatively closed, the residual gas is easy to accumulate in the pipeline. Once it encounters open flames or high temperatures, it is easy to cause an explosion accident, thereby endangering the safety of personnel and equipment. Utility Model Content
[0003] The utility model aims to provide a radiant tube heater to solve the problem that the gas remaining in the radiant tube is prone to cause explosion accidents.
[0004] The utility model is realized through the following technical solutions.
[0005] A radiant tube heater comprises a radiant tube and a burner fixedly arranged in the radiant tube, wherein a smoke exhaust outlet is formed on the radiant tube, a gas pipeline is connected to the burner, and a nozzle connected to the radiant tube is formed on the burner, a purge port is formed on the burner, and a purge pipeline connected to the purge port is connected to the burner for conveying purge gas into the burner so as to blow out the gas remaining in the radiant tube and the burner from the smoke exhaust outlet.
[0006] As a further improvement of the utility model, a combustion-supporting gas pipeline for conveying combustion-supporting gas into the burner is connected to the burner, and the combustion-supporting gas pipeline is connected to the purge pipeline.
[0007] As a further improvement of the utility model, the purge pipeline is connected to a first flow controller for controlling the flow rate of the purge gas.
[0008] As a further improvement of the utility model, a second flow controller for controlling the flow of the combustion-supporting gas is provided on the combustion-supporting gas pipeline, and the purge pipeline is connected to a side of the second flow controller away from the burner.
[0009] As a further improvement of the present invention, the combustion-supporting gas is set to be air or oxygen.
[0010] As a further improvement of the utility model, the purge port is arranged on the top of the burner.
[0011] As a further improvement of the utility model, the radiation tube is connected to a smoke exhaust pipe connected to the smoke exhaust outlet, and a gas monitoring device is provided on the smoke exhaust pipe.
[0012] As a further improvement of the utility model, the gas monitoring device includes a collection box and a gas detector and an alarm arranged in the collection box, and the gas detector is connected to the alarm.
[0013] As a further improvement of the utility model, a fan is connected to the smoke exhaust duct.
[0014] Beneficial effects of the utility model:
[0015] 1. The utility model provides a radiant tube heater, in which a purge pipe is arranged on the top of the burner, and the purge pipe is used to transport purge gas into the burner so as to discharge the gas remaining in the burner and the radiant tube from the smoke exhaust outlet, so as to avoid explosion of the gas remaining in the radiant tube and the burner when the burner is ignited, thereby ensuring the safety of equipment and personnel.
[0016] 2. In the present invention, a gas monitoring device is provided on the smoke exhaust pipe to detect the concentration of the gas in the gas discharged from the smoke exhaust outlet. The operator can judge the purge progress according to the detected gas solubility, thereby avoiding the waste of purge gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The following is a detailed description of the preferred implementation examples of the present invention through the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:
[0018] Figure 1 It is a structural schematic diagram of a radiant tube heater in the utility model;
[0019] In the figure:
[0020] 1. Radiant tube; 11. Smoke exhaust outlet; 12. Smoke exhaust pipe; 2. Burner; 21. Nozzle; 22. Purge port; 3. Gas pipeline; 4. Purge pipeline; 41. First flow controller; 5. Combustion-supporting gas pipeline; 51. Second flow controller; 6. Gas monitoring device; 61. Collecting box; 62. Gas detector; 63. Alarm; 7. Fan. DETAILED DESCRIPTION
[0021] The utility model is further described in detail below based on the accompanying drawings and implementation cases.
[0022] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.
[0023] This embodiment provides a radiant tube heater 1, referring to Figure 1 , including a radiation tube 1 and a burner 2. The radiation tube 1 in this embodiment is a semi-enclosed radiation tube 1 with an opening at one end. The burner 2 is fixedly installed at the top opening of the radiation tube 1 through a flange. A smoke exhaust outlet 11 is formed on the radiation tube 1. A gas pipeline 3 and a combustion-supporting gas pipeline 5 communicating with the inside of the burner 2 are provided on the burner 2. The gas pipeline 3 is used to transport the gas for combustion into the burner 2. The combustion-supporting gas pipeline 5 is used to transport the combustion-supporting gas into the burner 2. A nozzle 21 communicating with the radiation tube 1 is formed on the burner 2. A purge port 22 is provided on the top of the burner 2. The purge port 22 is connected to a purge pipe 4 arranged on the burner 2. The purge pipe 4 transports purge gas into the burner 2 through the purge port 22. The purge gas is input into the radiation tube 1 through the nozzle 21, and the gas remaining in the radiation tube 1 and the burner 2 is blown out from the smoke exhaust outlet 11, so as to avoid explosion of the gas remaining in the radiation tube 1 and the burner 2 when the burner 2 is ignited, thereby ensuring the safety of equipment and personnel.
[0024] In this embodiment, one end of the purge pipe 4 is connected to the purge port 22, and the other end is connected to the combustion-supporting gas pipe 5. In this connection structure, the purge pipe 4 is connected to the combustion-supporting gas pipe 5, and the combustion-supporting gas is used as the purge gas. After the purge gas discharges the gas remaining in the burner 2 and the radiation tube 1, the purge gas remains in the burner 2 and the radiation tube 1. Using the combustion-supporting gas as the purge gas allows the purge gas to participate in the combustion, and the purge gas can be fully utilized.
[0025] In this embodiment, a first flow controller 41 is provided on the purge pipe 4, and the first flow controller 41 is used to control the flow of the purge gas flowing through the purge pipe 4, so as to avoid unnecessary waste and loss caused by inappropriate purge gas flow. At the same time, a second flow controller 51 for controlling the flow of the combustion-supporting gas is provided on the combustion-supporting gas pipe 5, and the purge pipe 4 is connected to the side of the second flow controller 51 away from the burner 2, so as to ensure that the second flow controller 51 can accurately adjust the flow of the combustion-supporting gas input into the burner 2.
[0026] Preferably, the combustion-supporting gas used is air or oxygen.
[0027] In this embodiment, in order to allow the remaining fuel gas in the burner 2 and the radiation tube 1 to flow out through the smoke exhaust outlet 11, a fan 7 is provided outside the radiation tube 1. The fan 7 is connected to the smoke exhaust outlet 11 through a smoke exhaust pipe 12. When the fan 7 is working, it can guide the gas in the radiation tube 1 and the burner 2 to flow out through the smoke exhaust outlet 11, thereby improving the purging efficiency.
[0028] Furthermore, a gas monitoring device 6 is provided on the smoke exhaust pipe 12. The gas monitoring device 6 can detect the concentration of the gas in the gas exhausted from the smoke exhaust outlet 11, and can issue an alarm when the gas concentration exceeds the standard, that is, the operator can judge the purge process by the gas concentration detected by the gas monitoring device 6, which helps to save the use of the purge gas. It should be noted that the residual gas in the radiation tube 1 may also be caused by the leakage of the gas pipeline 3. When the gas pipeline 3 leaks, part of the gas may flow out of the smoke exhaust outlet 11. However, due to the existence of the gas monitoring device 6, once the concentration of the leaked gas exceeds the safety threshold, an alarm will be issued immediately, which helps to detect abnormal conditions in time and prevent gas leakage and explosion accidents.
[0029] Specifically, the gas monitoring device 6 includes a sealed collecting box 61 and a gas detector 62 and an alarm 63 fixedly arranged in the collecting box 61. The collecting box 61 is connected to the smoke exhaust pipe 12 and collects the gas exhausted from the smoke exhaust outlet 11. The gas detector 62 and the alarm 63 are electrically connected. The gas detector 62 can detect the concentration of gas in the gas input into the collecting box 61. When the gas concentration exceeds the standard, the alarm 63 can sound an alarm to alert the operator.
[0030] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.
Claims
1. A radiant tube heater, comprising a radiant tube (1) and a burner (2) fixedly arranged in the radiant tube (1), wherein the radiant tube (1) is formed with a smoke exhaust outlet (11), the burner (2) is connected to a gas pipeline (3), and the burner (2) is formed with a nozzle (21) communicating with the radiant tube (1), characterized in that: The burner (2) is provided with a purge port (22), and the burner (2) is connected to a purge pipe (4) communicating with the purge port (22) for conveying purge gas into the burner (2) so as to blow out the remaining fuel gas in the radiant tube (1) and the burner (2) from the smoke exhaust outlet (11).
2. A radiant tube heater according to claim 1, characterized in that: The burner (2) is connected to a combustion-supporting gas pipeline (5) for conveying combustion-supporting gas into the burner (2), and the combustion-supporting gas pipeline (5) is connected to the purge pipeline (4).
3. A radiant tube heater according to claim 2, characterized in that: The purge pipeline (4) is connected to a first flow controller (41) for controlling the flow rate of the purge gas.
4. A radiant tube heater according to claim 2, characterized in that: The combustion-supporting gas pipeline (5) is provided with a second flow controller (51) for controlling the flow rate of the combustion-supporting gas, and the purge pipeline (4) is connected to a side of the second flow controller (51) away from the burner (2).
5. The radiant tube heater according to claim 2, characterized in that: The combustion-supporting gas is set to air or oxygen.
6. The radiant tube heater according to claim 1, characterized in that: The purge port (22) is arranged at the top of the burner (2).
7. The radiant tube heater according to claim 1, characterized in that: The radiation tube (1) is connected to a smoke exhaust pipe (12) which is in communication with the smoke exhaust outlet (11), and a gas monitoring device (6) is provided on the smoke exhaust pipe (12).
8. A radiant tube heater according to claim 7, characterized in that: The gas monitoring device (6) comprises a collection box (61), a gas detector (62) and an alarm (63) arranged in the collection box (61), and the gas detector (62) is connected to the alarm (63).
9. The radiant tube heater according to claim 7, characterized in that: The smoke exhaust pipe (12) is connected to a fan (7).