Welding device and welding method for water conservancy construction pipeline

Abstract

The invention relates to the technical field of pipeline welding, in particular to a welding device and method for water conservancy construction pipelines, and the welding method comprises the steps that all parameters in the process of welding two pipelines are obtained; according to all parameters in the process of welding the two pipelines, the tightness degree state and the welding seam height state at each moment in the process of welding the two pipelines are obtained; according to the welding seam height state and the tightness degree state at each moment in the process of welding the two pipelines, the welding adjustment weight at each moment in the process of welding the two pipelines is obtained, and the welding power and the welding speed at each moment in the process of welding the two pipelines are adjusted; and then the heat input quantity at each moment in the process of welding the two pipelines is adjusted. According to the method, all parameters in the process of welding the two pipelines are detected, the welding power and the welding speed in the process of welding the two pipelines are adjusted, the heat input amount during pipeline welding is optimized, and therefore the welding quality of the water conservancy construction pipelines is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, and in particular to a welding device and a welding method for water conservancy construction pipelines. Background Art

[0002] When welding pipes in traditional water conservancy construction methods, the welding power and speed are constant. However, in the actual welding process, the two pipe openings need to be spliced ​​and then welded using a welding gun. At this time, due to the local thickness difference and concave-convex shape of the edges of the two welded pipes, some positions of the two pipes cannot be tightly fitted when spliced. Then, the fixed welding heat input may not be able to accurately weld the wider splicing gap, thereby reducing the welding quality. Summary of the invention

[0003] The invention provides a welding device and a welding method for a water conservancy construction pipeline, so as to solve the existing problem that the welding quality of the pipeline welded by the traditional welding method for the water conservancy construction pipeline is poor.

[0004] The welding device and welding method for water conservancy construction pipelines of the present invention adopt the following technical solutions: An embodiment of the present invention provides a welding method for a water conservancy construction pipeline, the method comprising the following steps: Obtain the pipe gap between pipes, pipe thickness, welding position height, and the highest and lowest heights in the pipe during welding of two pipes; According to the pipe gap and pipe thickness between the pipes at each moment in the welding process of the two pipes, the tightness at each moment in the welding process of the two pipes is obtained; the time sequence change of the tightness during the welding process of the two pipes is monitored to obtain the tightness state at each moment in the welding process of the two pipes; According to the welding position height at each moment in the process of welding the two pipes, combined with the highest height and the lowest height in the pipe, the weld height state at each moment in the process of welding the two pipes is obtained; according to the weld height state and the tightness state at each moment in the process of welding the two pipes, the welding adjustment weight at each moment in the process of welding the two pipes is obtained; according to the welding adjustment weight at each moment in the process of welding the two pipes, the welding power adjustment weight and the welding speed adjustment weight are obtained; According to the welding power adjustment weight and the welding speed adjustment weight, the adjusted heat input at each moment in the welding process of the two pipes is obtained.

[0005] Preferably, the specific method of obtaining the pipe gap and pipe thickness between the pipes during welding of the two pipes includes: Integrate a laser measurement sensor and an ultrasonic detector near the welding gun; preset a sampling time interval During the welding of two pipes, the laser measuring sensor is The pipe gap between the two pipes is sampled once every second, and the pipe thickness of the two pipes is sampled at the same sampling time interval using an ultrasonic detector.

[0006] Preferably, the strictness at each moment in the welding process of the two pipelines is obtained according to the pipeline gap and pipeline thickness between the pipelines at each moment in the welding process of the two pipelines, and the specific calculation formula included is: In the formula, Indicates the first The rigor of each moment; Indicates the first The thickness of the first pipe at the moment; Indicates the first The thickness of the second pipe at the moment; Indicates the first The pipe gap between the two pipes at a certain moment; Represents the absolute value function.

[0007] Preferably, the method of monitoring the time-series change of the tightness during the welding of the two pipes and obtaining the tightness state at each moment during the welding of the two pipes includes the following specific methods: For welding two pipes moment; the first moment in the process of welding two pipes All the moments before the moment are recorded as the first moment in the process of welding two pipes. The historical moment of the moment; according to the first The rigor of the moment is the same as the The rigor of the historical moment at each moment in the process of welding two pipes The level of strictness at a given moment.

[0008] Preferably, the first The strictness status at a certain moment includes the specific calculation formula: In the formula, Indicates the first The state of strictness at a given moment; Indicates the first The rigor of each moment; Indicates the first The rigor of each moment; Indicates the first The number of historical moments.

[0009] Preferably, the height of the weld at each moment in the process of welding the two pipes is obtained according to the height of the welding position at each moment in the process of welding the two pipes, combined with the highest height and the lowest height in the pipes, and the specific calculation formula included is: In the formula, Indicates the first The weld height status at a certain moment; Indicates the first The height of the position at a moment; Indicates the highest height of the first pipe during welding of two pipes; Indicates the lowest height of the first pipe during welding of two pipes; Indicates the highest height of the second pipe during welding of two pipes; Indicates the lowest height of the second pipe during welding of two pipes.

[0010] Preferably, the specific method of obtaining the welding adjustment weight at each moment in the process of welding the two pipes according to the weld height state and the tightness state at each moment in the process of welding the two pipes includes: For welding two pipes moment; the first moment in the process of welding two pipes The tightness of the state at the moment is the same as the tightness of the state at the moment of welding the two pipes. The product of the weld height state at each moment is mapped to the range of [-1, 1], and the mapping result is used as the first The welding adjustment weight at that moment.

[0011] Preferably, the welding power adjustment weight and the welding speed adjustment weight are obtained according to the welding adjustment weight at each moment in the welding process of the two pipes, and the specific calculation formula included is: In the formula, Indicates the first The welding power adjustment weight at each moment; Indicates the first Welding adjustment weight at each moment; Indicates the first The welding speed adjustment weight at each moment.

[0012] Preferably, the method of obtaining the adjusted heat input at each moment in the process of welding the two pipes according to the adjusted welding power and welding speed at each moment in the process of welding the two pipes comprises the following specific methods: Get the first The welding power and welding speed at each moment are calculated according to the welding process of the two pipes. The welding power adjustment weight at the moment is related to the welding process of the two pipes. The welding speed adjustment weight at each moment is used to adjust the welding speed of the two pipes. The specific calculation formula for the heat input at each moment is: In the formula, Indicates the first The heat input after adjustment at each moment; Indicates the first Welding power at each moment; Indicates the first Welding speed at each moment; Indicates the first The welding power adjustment weight at each moment; Indicates the first The welding speed adjustment weight at each moment; Indicates the electrical efficiency of welding equipment.

[0013] The present invention also proposes a welding device for water conservancy construction pipelines, including a welding device body for water conservancy construction pipelines, a welding data acquisition module, a pipeline splicing module, a weld positioning module and a welding adjustment module: The welding data acquisition module is used to obtain the pipe gap between pipes, pipe thickness, welding position height, and the highest and lowest heights in the pipes during the welding of two pipes; The pipeline splicing module is used to obtain the tightness at each moment in the welding process of the two pipelines according to the pipeline gap and pipeline thickness between the pipelines at each moment in the welding process of the two pipelines; monitor the time sequence change of the tightness during the welding process of the two pipelines, and obtain the tightness state at each moment in the welding process of the two pipelines; The weld positioning module is used to obtain the weld height state at each moment in the process of welding the two pipes according to the welding position height at each moment in the process of welding the two pipes, combined with the highest height and the lowest height in the pipes; obtain the welding adjustment weight at each moment in the process of welding the two pipes according to the weld height state and the tightness state at each moment in the process of welding the two pipes; obtain the welding power adjustment weight and the welding speed adjustment weight according to the welding adjustment weight at each moment in the process of welding the two pipes; The welding adjustment module is used to obtain the adjusted heat input at each moment in the process of welding two pipes according to the welding power adjustment weight and the welding speed adjustment weight.

[0014] The technical solution of the present invention has the beneficial effects of: obtaining various parameters in the process of welding two pipes; obtaining the tightness state and weld height state at each moment in the process of welding the two pipes according to the various parameters in the process of welding the two pipes; when the tightness state changes less in the process of welding the two pipes, it means that the splicing between the welded pipes is less tight at this time, and it is necessary to increase the welding power and reduce the welding speed; when the weld height state is lower, it means that the weld position is more likely to accumulate dissolved oxygen and various chemical substances to corrode the place during subsequent use, and it is necessary to increase the welding power and reduce the welding speed to make the place more corrosion-resistant; the welding adjustment weight at each moment in the process of welding the two pipes can be further obtained according to the weld height state and the tightness state at each moment in the process of welding the two pipes, so as to adjust the welding power and welding speed at each moment in the process of welding the two pipes, and then adjust the heat input at each moment in the process of welding the two pipes, and finally improve the quality of pipe welding in water conservancy construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A flow chart of the steps of a welding method for water conservancy construction pipelines of the present invention; Figure 2 This is a flow chart of adjusting welding power and welding speed in this embodiment. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of a welding device and welding method for water conservancy construction pipelines proposed by the present invention, its specific implementation, structure, features and effects, in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0018] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0019] The specific scheme of a welding device and a welding method for water conservancy construction pipelines provided by the present invention is described in detail below with reference to the accompanying drawings.

[0020] See also Figure 1 , which shows a flow chart of a welding method for a water conservancy construction pipeline provided by an embodiment of the present invention, the method comprising the following steps: Step S001: Obtain the pipe gap between pipes, pipe thickness, welding position height, and the highest height and lowest height in the pipe during the welding process of two pipes.

[0021] It should be noted that this embodiment, as a welding method for water conservancy construction pipelines, detects various parameters in the process of welding two pipelines and adjusts the welding power and welding speed in the process of welding the two pipelines, so as to improve the welding quality of water conservancy construction pipelines. Therefore, it is necessary to first obtain various parameters in the process of welding two pipelines.

[0022] Specifically, a laser measurement sensor and an ultrasonic detector are integrated near the welding gun; a sampling time interval is preset , The specific value of can be set according to the actual situation. This embodiment does not make a hard requirement. In the welding process of two pipes, the laser measuring sensor is used to measure the The pipe gap between the two pipes is collected every second, and the pipe thickness of the two pipes is collected at the same sampling time interval by an ultrasonic detector; at the same time, the highest and lowest heights of the two pipes and the height of the welding position are obtained.

[0023] Step S002: According to the pipe gap and pipe thickness between the pipes at each moment in the welding process of the two pipes, the tightness at each moment in the welding process of the two pipes is obtained; the time sequence change of the tightness during the welding process of the two pipes is monitored to obtain the tightness state at each moment in the welding process of the two pipes.

[0024] It should be noted that in the process of welding pipes, the pipes must first be spliced. In the process of splicing pipes, the larger the pipe gap between the pipes, the more metal is needed to fill the pipe gap, that is, the greater the heat input required. At the same time, if the thickness difference between the two pipes is greater when welding the pipes, the two pipes are more likely to have loose splicing problems during the splicing process. In order to improve the quality of pipe welding in water conservancy construction, it is first necessary to evaluate the tightness of the pipes when welding the pipes based on the pipe gap between the pipes and the thickness difference between the pipes, and further use the change in the tightness of the pipes as the basis for adjusting the welding power and welding speed.

[0025] Preferably, in a specific embodiment of the present invention, during welding two pipes, moment; according to The thickness of the two pipes at each moment is The gap between the two pipes at the moment, and the first The specific calculation formula for the rigor of a moment is: In the formula, Indicates the first The rigor of each moment; Indicates the first The thickness of the first pipe at the moment; Indicates the first The thickness of the second pipe at the moment; Indicates the first The pipe gap between the two pipes at a certain moment; Represents the absolute value function.

[0026] It should be noted that It indicates the thickness difference between the two pipes during welding. The greater the thickness difference, the more likely it is that the two pipes will not be tightly spliced ​​during splicing. It indicates the gap between two pipes during welding. The larger the gap, the looser the pipe joint. and The smaller the value, the tighter the pipe splicing.

[0027] It needs to be further explained that the process of welding two pipes is a long dynamic process. As the welding progresses, the pipes should be spliced ​​more tightly. If the tightness of the pipe decreases as the welding progresses, it means that the welding power of the welding pipe is small and the welding speed is fast, which makes the heat input of the welding too small, resulting in a decrease in the quality of the welding. At this time, the welding power should be increased and the welding speed should be reduced to improve the welding quality. Therefore, in order to improve the welding quality of the pipe, it is necessary to adjust the welding power and welding speed when welding the pipe in combination with the changes in the tightness at each moment in the process of welding the two pipes. To this end, it is necessary to obtain the tightness status at each moment in the process of welding the two pipes.

[0028] Preferably, in a specific embodiment of the present invention, during welding two pipes, moment; the first moment in the process of welding two pipes All the moments before the moment are recorded as the first moment in the process of welding two pipes. The historical moment of the moment; according to the first The rigor of the moment is the same as the The rigor of the historical moment at each moment in the process of welding two pipes The specific calculation formula for the strictness state at a moment is: In the formula, Indicates the first The state of strictness at a given moment; Indicates the first The rigor of each moment; Indicates the first The rigor of each moment; Indicates the first The number of historical moments.

[0029] It needs to be further explained that It indicates the first The overall tightness of the two pipelines at the historical moment of the welding process is compared. The change in the overall tightness of the two pipes at a certain moment and the moment before it. When the tightness decreases, it means that the welding power is low and the welding speed is fast, which provides a theoretical basis for the subsequent adjustment of the welding power and welding speed.

[0030] At this point, the tightness status at each moment in the process of welding the two pipes is obtained.

[0031] Step S003: According to the welding position height at each moment in the process of welding the two pipes, combined with the highest height and the lowest height in the pipe, the weld height state at each moment in the process of welding the two pipes is obtained; according to the weld height state and the tightness state at each moment in the process of welding the two pipes, the welding adjustment weight at each moment in the process of welding the two pipes is obtained; according to the welding adjustment weight at each moment in the process of welding the two pipes, the welding power adjustment weight and the welding speed adjustment weight are obtained.

[0032] It should be noted that the water discharged from the water conservancy pipeline always contains a large amount of dissolved oxygen and various chemicals, which usually gather at relatively low positions in the pipeline under the influence of gravity. Since dissolved oxygen and various chemicals will corrode the inner wall of the pipeline, especially the welds between pipelines, when welding pipelines, for the low positions in the pipeline, the welding power and welding speed should be adjusted according to their height parameters. To this end, it is first necessary to obtain the weld height status at each moment in the process of welding the two pipelines.

[0033] Preferably, in a specific embodiment of the present invention, during welding two pipes, moment; obtain the highest and lowest heights of the two welded pipes, and combine the highest and lowest heights of the two pipes in the welding process. The height of the welding position at the moment, and obtain the height of the welding position during the welding of two pipes. The specific calculation formula for the weld height state at a certain moment is: In the formula, Indicates the first The weld height status at a certain moment; Indicates the first The height of the position at a moment; Indicates the highest height of the first pipe during welding of two pipes; Indicates the lowest height of the first pipe during welding of two pipes; Indicates the highest height of the second pipe during welding of two pipes; Indicates the lowest height of the second pipe during welding of two pipes.

[0034] It should be noted that and Respectively represent the first The relative height of the weld at the first moment in the first pipe and the relative height of the weld at the second pipe. When the relative height is smaller, the more dissolved oxygen and various chemicals are likely to accumulate at this position, and the more serious the corrosion at this position may be in subsequent use. Therefore, when welding, The corresponding position at each moment is that the welding power should be increased and the welding speed should be slowed down to improve the welding quality. Further combined with the strictness state at each moment in the process of welding the two pipes, the welding adjustment weight at each moment in the process of welding the two pipes is obtained.

[0035] Preferably, in a specific embodiment of the present invention, during welding two pipes, moment; the first moment in the process of welding two pipes The tightness of the state at the moment is the same as the tightness of the state at the moment of welding the two pipes. The product of the weld height state at each moment is mapped to the range of [-1, 1], and the mapping result is used as the first The welding adjustment weight at each moment; the specific calculation formula is: In the formula, Indicates the first Welding adjustment weight at each moment; Indicates the first The state of strictness at a given moment; Indicates the first The weld height status at a certain moment; Inverse Square Root Unit function, in this embodiment, is used to convert the welding process of two pipes at all times The values ​​are mapped to the range [-1, 1].

[0036] It should be further explained that the smaller the degree of rigor, the lower the welding power and the faster the welding speed. At this time, the welding power should be increased and the welding speed should be reduced. If the weld height is low, it means that the weld at this position is easily affected by corrosion. The welding power should be increased and the welding speed should be reduced. Therefore, The smaller the value is, the more the welding power should be increased and the welding speed should be reduced when adjusting the welding power and welding speed in the subsequent process, so as to obtain the welding power adjustment weight and the welding speed adjustment weight.

[0037] Specifically, for the first moment; according to the first moment in the process of welding two pipes The welding adjustment weight at the moment is obtained during the welding of two pipes. The specific calculation formula for the welding power adjustment weight and welding speed adjustment weight at each moment is: In the formula, Indicates the first The welding power adjustment weight at each moment; Indicates the first Welding adjustment weight at each moment; Indicates the first The welding speed adjustment weight at each moment.

[0038] It should be noted that when The smaller the value, the more likely it is that the welding process of the two pipes The lower the welding position at the moment, and At this moment, the tightness of the splicing between the two pipes decreases. At this time, the welding speed should be reduced and the welding power should be increased; otherwise, the welding speed should be increased and the welding power should be reduced to improve the welding quality.

[0039] At this point, the welding power adjustment weight and the welding speed adjustment weight are obtained.

[0040] Step S004: According to the welding power adjustment weight and the welding speed adjustment weight, the adjusted heat input at each moment in the welding process of the two pipes is obtained.

[0041] It should be noted that, by obtaining the welding power adjustment weight and the welding speed adjustment weight in step S003, the input amount during welding can be obtained by adjusting the welding power and the welding speed during welding.

[0042] Specifically, for the first moment; obtain the moment in the process of welding two pipes The welding power and welding speed at each moment are calculated according to the welding process of the two pipes. The welding power adjustment weight at the moment is related to the welding process of the two pipes. The welding speed adjustment weight at each moment is used to adjust the welding speed of the two pipes. The specific calculation formula for the heat input at each moment is: In the formula, Indicates the first The heat input after adjustment at each moment; Indicates the first Welding power at each moment; Indicates the first Welding speed at each moment; Indicates the first The welding power adjustment weight at each moment; Indicates the first The welding speed adjustment weight at each moment; The power efficiency of the welding equipment can be obtained by the output power and input power of the welding equipment. The specific acquisition method is a well-known prior art, so it will not be described in detail in this embodiment. Let's take this as an example.

[0043] In this embodiment, the welding power and welding speed are adjusted as follows Figure 2 As shown, Figure 2 This is a flow chart of adjusting welding power and welding speed in this embodiment.

[0044] It should be noted that the heat input during welding can directly affect the quality and performance of welding. By adjusting the various parameters in the process of welding the two pipes, the welding power and welding speed in the process of welding the two pipes can provide more heat input when welding the pipes, thereby achieving the purpose of improving the quality of welding of water conservancy construction pipes.

[0045] It should be further explained that this embodiment provides the best welding speed and welding power for welding pipes according to the tightness between the two pipes and the relative position of the welding in the pipes during the welding process, thereby improving the welding quality of the pipes.

[0046] The present invention also proposes a welding device for water conservancy construction pipelines, including a welding device body for water conservancy construction pipelines, a welding data acquisition module, a pipeline splicing module, a weld positioning module and a welding adjustment module; The welding data acquisition module is used to obtain the pipe gap between pipes, pipe thickness, welding position height, and the highest and lowest heights in the pipes during the welding of two pipes; The pipeline splicing module is used to obtain the tightness at each moment in the welding process of the two pipelines according to the pipeline gap and pipeline thickness between the pipelines at each moment in the welding process of the two pipelines; monitor the time sequence change of the tightness during the welding process of the two pipelines, and obtain the tightness state at each moment in the welding process of the two pipelines; The weld positioning module is used to obtain the weld height state at each moment in the process of welding the two pipes according to the welding position height at each moment in the process of welding the two pipes, combined with the highest height and the lowest height in the pipes; obtain the welding adjustment weight at each moment in the process of welding the two pipes according to the weld height state and the tightness state at each moment in the process of welding the two pipes; obtain the welding power adjustment weight and the welding speed adjustment weight according to the welding adjustment weight at each moment in the process of welding the two pipes; The welding adjustment module is used to obtain the adjusted heat input at each moment in the process of welding two pipes according to the welding power adjustment weight and the welding speed adjustment weight.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding method for water conservancy construction pipelines, characterized in that: The method comprises the following steps: Obtain the pipe gap between pipes, pipe thickness, welding position height, and the highest and lowest heights in the pipe during welding of two pipes; According to the pipe gap and pipe thickness between the pipes at each moment in the welding process of the two pipes, the tightness at each moment in the welding process of the two pipes is obtained; the time sequence change of the tightness during the welding process of the two pipes is monitored to obtain the tightness state at each moment in the welding process of the two pipes; According to the welding position height at each moment in the process of welding the two pipes, combined with the highest height and the lowest height in the pipe, the weld height state at each moment in the process of welding the two pipes is obtained; according to the weld height state and the tightness state at each moment in the process of welding the two pipes, the welding adjustment weight at each moment in the process of welding the two pipes is obtained; according to the welding adjustment weight at each moment in the process of welding the two pipes, the welding power adjustment weight and the welding speed adjustment weight are obtained; According to the welding power adjustment weight and the welding speed adjustment weight, the adjusted heat input at each moment in the welding process of the two pipes is obtained.

2. A welding method for water conservancy construction pipeline according to claim 1, characterized in that: The specific method of obtaining the pipe gap and pipe thickness between the pipes during welding of the two pipes includes: Integrate a laser measurement sensor and an ultrasonic detector near the welding gun; preset a sampling time interval During the welding of two pipes, the laser measuring sensor is The pipe gap between the two pipes is sampled once every second, and the pipe thickness of the two pipes is sampled at the same sampling time interval using an ultrasonic detector.

3. A welding method for water conservancy construction pipeline according to claim 1, characterized in that: The specific calculation formula for obtaining the tightness at each moment in the welding process of the two pipelines according to the pipeline gap and pipeline thickness between the pipelines at each moment in the welding process of the two pipelines is as follows: In the formula, Indicates the first The rigor of each moment; Indicates the first The thickness of the first pipe at the moment; Indicates the first The thickness of the second pipe at the moment; Indicates the first The pipe gap between the two pipes at a certain moment; Represents the absolute value function.

4. A welding method for water conservancy construction pipeline according to claim 1, characterized in that: The method of monitoring the time sequence change of the tightness during the welding of the two pipes and obtaining the tightness state at each moment during the welding of the two pipes includes: For welding two pipes moment; the first moment in the process of welding two pipes All the moments before the moment are recorded as the first moment in the process of welding two pipes. The historical moment of the moment; according to the first The rigor of the moment is the same as the The rigor of the historical moment at each moment in the process of welding two pipes The level of strictness at a given moment.

5. A welding method for water conservancy construction pipeline according to claim 4, characterized in that: The process of obtaining the welding of two pipes The strictness status at a certain moment includes the specific calculation formula: In the formula, Indicates the first The state of strictness at a given moment; Indicates the first The rigor of each moment; Indicates the first The rigor of each moment; Indicates the first The number of historical moments.

6. A welding method for water conservancy construction pipeline according to claim 1, characterized in that: According to the welding position height at each moment in the welding process of the two pipes, combined with the highest height and the lowest height in the pipe, the weld height state at each moment in the welding process of the two pipes is obtained, and the specific calculation formula included is: In the formula, Indicates the first The weld height status at a certain moment; Indicates the first The height of the position at a moment; Indicates the highest height of the first pipe during welding of two pipes; Indicates the lowest height of the first pipe during welding of two pipes; Indicates the highest height of the second pipe during welding of two pipes; Indicates the lowest height of the second pipe during welding of two pipes.

7. A welding method for water conservancy construction pipeline according to claim 1, characterized in that: The specific method of obtaining the welding adjustment weight at each moment in the process of welding the two pipes according to the weld height state and the tightness state at each moment in the process of welding the two pipes includes: For welding two pipes moment; the first moment in the process of welding two pipes The tightness of the state at the moment is the same as the tightness of the state at the moment of welding the two pipes. The product of the weld height state at each moment is mapped to the range of [-1, 1], and the mapping result is used as the first The welding adjustment weight at that moment.

8. A welding method for water conservancy construction pipeline according to claim 1, characterized in that: The specific calculation formula for obtaining the welding power adjustment weight and the welding speed adjustment weight according to the welding adjustment weight at each moment in the welding process of the two pipes is as follows: In the formula, Indicates the first The welding power adjustment weight at each moment; Indicates the first Welding adjustment weight at each moment; Indicates the first The welding speed adjustment weight at each moment.

9. A welding method for water conservancy construction pipeline according to claim 1, characterized in that: The method of obtaining the adjusted heat input at each moment in the process of welding the two pipes according to the adjusted welding power and welding speed at each moment in the process of welding the two pipes includes the following specific methods: Get the first The welding power and welding speed at each moment are calculated according to the welding process of the two pipes. The welding power adjustment weight at the moment is related to the welding process of the two pipes. The welding speed adjustment weight at each moment is used to adjust the welding speed of the two pipes. The specific calculation formula for the heat input at each moment is: In the formula, Indicates the first The heat input after adjustment at each moment; Indicates the first Welding power at each moment; Indicates the first Welding speed at each moment; Indicates the first The welding power adjustment weight at each moment; Indicates the first The welding speed adjustment weight at each moment; Indicates the electrical efficiency of welding equipment.

10. A welding device for water conservancy construction pipelines, comprising a welding device body for water conservancy construction pipelines, characterized in that: It also includes welding data acquisition module, pipeline splicing module, weld positioning module and welding adjustment module: The welding data acquisition module is used to obtain the pipe gap between pipes, pipe thickness, welding position height, and the highest and lowest heights in the pipes during the welding of two pipes; The pipeline splicing module is used to obtain the tightness at each moment in the welding process of the two pipelines according to the pipeline gap and pipeline thickness between the pipelines at each moment in the welding process of the two pipelines; monitor the time sequence change of the tightness during the welding process of the two pipelines, and obtain the tightness state at each moment in the welding process of the two pipelines; The weld positioning module is used to obtain the weld height state at each moment in the process of welding the two pipes according to the welding position height at each moment in the process of welding the two pipes, combined with the highest height and the lowest height in the pipes; obtain the welding adjustment weight at each moment in the process of welding the two pipes according to the weld height state and the tightness state at each moment in the process of welding the two pipes; obtain the welding power adjustment weight and the welding speed adjustment weight according to the welding adjustment weight at each moment in the process of welding the two pipes; The welding adjustment module is used to obtain the adjusted heat input at each moment in the process of welding two pipes according to the welding power adjustment weight and the welding speed adjustment weight.

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