Automatic heating temperature control device for large tube plate
By using automatic heating and temperature control devices during the welding of large pipe sheets, the flame size is adjusted in real time using infrared temperature measurement sensors and heating mechanisms, the problems of temperature gradient and monitoring hysteresis are solved, and the welding quality and accuracy are improved.
Patent Information
- Application Number
- CN202323535236.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2033-12-25
AI Technical Summary
During the welding process of large pipe sheets, the temperature gradient in the central area and edge area is relatively large, and the temperature is difficult to monitor in real time during welding, resulting in poor welding quality and operating deviation.
An automatic heating temperature control device is designed, including gas pipelines, infrared temperature measurement sensors and heating mechanisms. The infrared temperature measurement sensor is used to monitor the temperature of the pipe board in real time and adjust the flame size to ensure temperature uniformity and accuracy.
It effectively reduces the temperature gradient, reduces the temperature inhomogeneity and operational hysteresis during welding, improves welding quality and reduces human operation errors.
Smart Images
Figure CN222256537U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tube plate welding, in particular to an automatic heating and temperature control device for a large tube plate. Background Art
[0002] During the welding process of large tube sheets, flame heating treatment is required throughout the process to ensure that the temperature of the tube sheets remains within a certain range, so that the welding quality is effectively guaranteed and the continuity of the welding operation is ensured.
[0003] The existing large tube sheet heating process has the following disadvantages: 1. Under the same heating conditions during welding, there is a large temperature gradient between the central area and the edge area of the tube sheet, which is not conducive to ensuring the welding quality; 2. Under the same heating conditions during welding, due to factors such as changes in ambient temperature, changes in welding heat input, and other operations in the manufacturing process, the temperature of the tube sheet welding area exceeds the required range, sometimes exceeding the upper limit of the required temperature, and sometimes falling below the lower limit of the required temperature; 3. During welding, it is often delayed to find that the temperature exceeds the required range, so that when it is found that the temperature does not meet the requirements, a lot of welding work has been done, which is not conducive to the control of welding quality. Utility Model Content
[0004] The main purpose of the utility model is to provide a large-scale tube sheet automatic heating temperature control device, which can effectively solve the problems in the background technology.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A large tube sheet automatic heating and temperature control device is arranged below the tube sheet and is used for heating during the welding process of the large tube sheet. The device comprises a gas pipeline, a manual gas valve is installed at one end of the gas pipeline, a main pipeline is installed at the other end of the manual gas valve, three branch pipelines are connected to the circumferential surface of the main pipeline, a control mechanism is installed at the other end of the branch pipeline, a heating mechanism is arranged at the other end of the control mechanism, and three infrared temperature sensors are also included. The three infrared temperature sensors are respectively located on one side of the three heating mechanisms, and the three infrared temperature sensors are respectively electrically connected to the three control mechanisms; the heating mechanism is used to spray flames, the infrared temperature sensor is used to measure the temperature of the flame-heated area in the tube sheet, and the control mechanism is used to adjust the size of the flame sprayed by the heating mechanism according to the temperature measured by the infrared temperature sensor.
[0007] Preferably, the heating mechanism includes a vertical tube arranged perpendicular to the axial direction of the tube sheet, a transverse tube is installed at one end of the vertical tube, the transverse tube is arranged parallel to the axial direction of the tube sheet, a plurality of flame nozzles are installed on the circumferential surface of the transverse tube, and an igniter matching the flame nozzle is installed on the circumferential surface of the transverse tube.
[0008] Preferably, the control mechanism includes a valve body, the inner cavity of the valve body is rotatably connected to a valve ball, the circumferential surface of the valve ball is provided with a through hole, the outer surface of the valve body is mounted with a motor, and the output end of the motor is fixedly connected to the axis of the valve ball.
[0009] Preferably, one end of the valve body is fixedly connected to the branch pipe, and the other end of the valve body is fixedly connected to the vertical pipe.
[0010] Preferably, the flame nozzle is located below the tube sheet.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] 1. By setting up three heating mechanisms to heat and control the temperature of three areas of the tube sheet respectively, the temperature gradient between the central area and the edge of the tube sheet can be reduced, making the temperature control more accurate and improving the quality of welding;
[0013] 2. The heating temperature of the tube sheet is monitored by setting an infrared temperature sensor, and the heating mechanism is linked to achieve real-time adjustment of the heating temperature, which reduces the hysteresis and effectively reduces the probability of uneven heating of the tube sheet;
[0014] 3. Automatic heating and temperature control of the tube sheet is realized, which reduces the work content of production personnel and avoids operational deviations caused by human factors. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the entire temperature control device proposed in this embodiment;
[0016] Figure 2 Schematic diagram of the structure of the heating mechanism in this embodiment;
[0017] Figure 3 Schematic diagram of the structure of the control mechanism in this embodiment;
[0018] Figure 4 Schematic diagram of the connection structure of the main pipeline and the branch pipeline in this embodiment;
[0019] Figure 5 Schematic diagram of the structure of the entire temperature control device proposed in this embodiment.
[0020] In the figure: 1. gas pipeline; 2. manual gas valve; 3. main pipeline; 4. branch pipeline; 5. control mechanism; 6. heating mechanism; 7. infrared temperature sensor; 8. tube plate; 51. valve body; 52. valve ball; 53. through hole; 54. motor; 61. vertical pipe; 62. horizontal pipe; 63. flame nozzle; 64. igniter. DETAILED DESCRIPTION
[0021] 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.
[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] like Figure 1-Figure 5 As shown, a large tube sheet automatic heating temperature control device is arranged below the tube sheet 8 and is used for heating during the welding process of the large tube sheet, comprising a gas pipeline 1, a manual gas valve 2 is installed at one end of the gas pipeline 1, a main pipeline 3 is installed at the other end of the manual gas valve 2, three branch pipelines 4 are connected to the circumferential surface of the main pipeline 3, a control mechanism 5 is installed at the other end of the branch pipeline 4, a heating mechanism 6 is arranged at the other end of the control mechanism 5, and also comprises three infrared temperature sensors 7, the three infrared temperature sensors 7 are respectively located on one side of the three heating mechanisms 6, and the three infrared temperature sensors 7 are respectively electrically connected to the three control mechanisms 5,
[0025] Among them, the heating mechanism 6 is used to spray flames, the infrared temperature sensor 7 is used to measure the temperature of the flame-heated area in the tube plate 8, and the control mechanism 5 is used to adjust the size of the flame sprayed by the heating mechanism 6 according to the temperature measured by the infrared temperature sensor 7.
[0026] When in use, the gas enters the main pipeline 3 through the gas pipeline 1, and the ventilation and sealing of the gas in the main pipeline 3 are controlled by the manual gas valve 2. Then, at the positions below the tube sheet 8 that need to be heated, heating mechanisms 6 are placed on both sides and in the center respectively. Outside a certain range away from the flame, an infrared temperature sensor 7 is respectively placed at the corresponding three heating mechanisms 6. The temperature on the tube sheet 8 is measured by the infrared temperature sensor 7, and the signal is transmitted to the control mechanism 5. The control mechanism 5 controls the gas flow on the pipeline through the signal input by the infrared temperature sensor 7, and then controls the flame size, so that the temperature of the tube sheet 8 is always maintained within the required range.
[0027] It should be noted that the linkage setting between the infrared temperature measuring sensor 7 and the control mechanism 5 in the present invention adopts the currently known technology. Since it is not the focus of the technical solution required to be protected by this application, it will not be described in detail.
[0028] Specifically, the heating mechanism 6 includes a vertical tube 61 arranged perpendicularly to the axial direction of the tube sheet 8, a transverse tube 62 is installed at one end of the vertical tube 61, the transverse tube 62 is arranged parallel to the axial direction of the tube sheet 8, a plurality of flame nozzles 63 are installed on the circumferential surface of the transverse tube 62, and an igniter 64 matching the flame nozzle 63 is installed on the circumferential surface of the transverse tube 62. The fuel gas enters the transverse tube 62 through the vertical tube 61, and then enters the flame nozzle 63, the fuel gas is atomized by the flame nozzle 63, and a conical oil mist layer is formed, which is ignited by the igniter 64 to form a flame.
[0029] Specifically, the control mechanism 5 includes a valve body 51, the inner cavity of the valve body 51 is rotatably connected to a valve ball 52, the circumferential surface of the valve ball 52 is provided with a through hole 53, and the outer surface of the valve body 51 is mounted with a motor 54, the output end of the motor 54 is fixedly connected to the axis of the valve ball 52. The valve ball 52 is driven to rotate by the output end of the motor 54, and the rotating valve ball 52 changes the position of the through hole 53, and the amount of gas passing through is adjusted by the size of the area of the overlap between the through hole 53 and the inlet and outlet of the valve body 51.
[0030] Specifically, one end of the valve body 51 is fixedly connected to the branch pipe 4 , and the other end of the valve body 51 is fixedly connected to the vertical pipe 61 .
[0031] Specifically, the flame nozzle 63 is located below the tube sheet 8 .
[0032] 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 large tube sheet automatic heating and temperature control device, arranged below the tube sheet (8), used for heating during the welding process of the large tube sheet, characterized in that: The invention comprises a gas pipeline (1), wherein a manual gas valve (2) is installed at one end of the gas pipeline (1), a main pipeline (3) is installed at the other end of the manual gas valve (2), three branch pipelines (4) are arranged in communication with the circumferential surface of the main pipeline (3), a control mechanism (5) is installed at the other end of the branch pipeline (4), a heating mechanism (6) is arranged at the other end of the control mechanism (5), and three infrared temperature sensors (7) are also included, wherein the three infrared temperature sensors (7) are respectively located on one side of the three heating mechanisms (6), and the three infrared temperature sensors (7) are respectively electrically connected to the three control mechanisms (5); the heating mechanism (6) is used to spray flames, the infrared temperature sensors (7) are used to measure the temperature of the flame-heated area in the tube sheet (8), and the control mechanism (5) is used to adjust the size of the flame sprayed by the heating mechanism (6) according to the temperature measured by the infrared temperature sensors (7).
2. A large tube sheet automatic heating and temperature control device according to claim 1, characterized in that: The heating mechanism (6) comprises a vertical tube (61) arranged perpendicularly to the axial direction of the tube sheet (8); a transverse tube (62) is installed at one end of the vertical tube (61); the transverse tube (62) is arranged parallel to the axial direction of the tube sheet (8); a plurality of flame nozzles (63) are installed on the circumferential surface of the transverse tube (62); and an igniter (64) matching the flame nozzle (63) is installed on the circumferential surface of the transverse tube (62).
3. A large tube sheet automatic heating and temperature control device according to claim 2, characterized in that: The control mechanism (5) comprises a valve body (51), the inner cavity of the valve body (51) is rotatably connected to a valve ball (52), the circumferential surface of the valve ball (52) is provided with a through hole (53), the outer surface of the valve body (51) is mounted with a motor (54), and the output end of the motor (54) is fixedly connected to the axis of the valve ball (52).
4. A large tube sheet automatic heating and temperature control device according to claim 3, characterized in that: One end of the valve body (51) is fixedly connected to the branch pipe (4), and the other end of the valve body (51) is fixedly connected to the vertical pipe (61).
5. The large tube sheet automatic heating and temperature control device according to claim 2 is characterized in that: The flame nozzle (63) is located below the tube sheet (8).