Detection device for pipeline electric fusion welding

Abstract

The utility model relates to a pipeline electro-fusion welding detection device which comprises an electro-fusion pipe fitting arranged outside the opposite ends of two pipelines in a sleeved mode, observation windows are formed in the outer circle faces of the two opposite ends of the electro-fusion pipe fitting, and observation pieces are connected in the observation windows in a sliding mode. Driving pieces are arranged at the two opposite ends of the electric melting pipe fitting, each driving piece comprises a first metal piece and a second metal piece which are different in thermal expansion coefficient, the opposite faces of the two first metal pieces and the two second metal pieces are attached, and transmission pieces are arranged between the driving pieces and the observation pieces; the transmission part is connected with the observation part and is attached to the side, away from the second metal sheet, of the first metal sheet. Heat generated by welding of the electric melting pipe fitting is matched with the first metal sheet and the second metal sheet to promote the observation piece to slide in the observation window so as to represent the welding temperature state, so that a worker can visually observe the welding temperature state, welding and detection synchronism is achieved, and temperature detection during welding can be completed without extra energy.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding detection technical field, concretely relates to the detection device of pipeline electric fusion welding. BACKGROUND

[0002] Electric fusion pipe fitting welding technology makes pipe fitting and pipeline melt and combine through electric heating wire heating, so as to reach the effect of welding, and its welding quality is directly influenced by temperature field distribution.

[0003] Compared with hot melt butt joint and other modes, the electric fusion pipe fitting is sleeved on the outer end of two pipeline weldings, can block the influence of external dust and other factors on welding effect, but due to the blocking of the electric fusion pipe fitting, the welding effect of the two pipelines is inconvenient for the staff to detect, and is often detected in the subsequent test link, which has hysteresis. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing the detection device of pipeline electric fusion welding to solve the problem that the welding effect of the two pipelines is inconvenient for the staff to detect when using the electric fusion pipe fitting mode, and is often detected in the subsequent test link, which has hysteresis.

[0005] The utility model realizes the following technical scheme:

[0006] A detection device of pipeline electric fusion welding, including the electric fusion pipe fitting that is sleeved to the opposite end of two pipelines, the outer circular surface of the opposite ends of the electric fusion pipe fitting is equipped with observation window, the observation window is slidably connected with observation piece;

[0007] The opposite ends of the electric fusion pipe fitting are provided with driving piece, the driving piece includes the first metal sheet and the second metal sheet that the thermal expansion coefficient is different, the opposite side of two first metal sheets and second metal sheets is pasted, the transmission part is arranged between the driving piece and observation piece, and the transmission part is connected with the observation piece and is pasted with the side of the first metal sheet away from the second metal sheet.

[0008] Further limit, the observation piece includes at least two color different board bodies, a plurality of board bodies are connected, and the observation window is located above the sliding track of a plurality of board bodies.

[0009] Further limit, the transmission part includes sliding slot, sliding block and push plate, the sliding slot is arranged in the electric fusion pipe fitting, and is communicated with the observation window, the sliding slot extends along the distribution direction of a plurality of board bodies, the sliding block is slidably connected with the sliding slot, the push plate is connected with the sliding block, and the push plate is connected with the sliding block.

[0010] Further limited, the both sides of the heat conduction sheet and the electric melting pipe are provided with high temperature resistant ceramic insulation layer.

[0011] Further limited, the transmission member further comprises a limiting slot which is opened in the electric melting pipe and located at the opposite sides of the sliding slot, the limiting slot is consistent with the extending direction of the sliding slot, a limiting block is slidably connected in the limiting slot, and the limiting block is connected with the sliding block.

[0012] Further limited, the observation window, the observation member, the driving member and the transmission member are distributed with multiple along the circumferential direction of the electric melting pipe.

[0013] Further limited, the inner circular surface of the electric melting pipe is provided with the heat conduction sheet which is connected with the first metal sheet and the second metal sheet.

[0014] Further limited, the observation member comprises a sliding rod, the sliding rod is slidably connected with the observation window, the sliding rod can slide in the direction of approaching or moving away from the axis of the electric melting pipe, and one end of the sliding rod which is towards the axis of the electric melting pipe is located at one side of the transmission member.

[0015] Further limited, the side of the sliding rod which is close to the transmission member is provided with an inclined surface, the inclined surface extends in the direction of moving away from the transmission member and towards the axis of the electric melting pipe.

[0016] Further limited, a elastic connecting piece is arranged between the one end of the sliding rod which is towards the axis of the electric melting pipe and the electric melting pipe, and the both ends of the elastic connecting piece are respectively connected with the electric melting pipe and the one end of the sliding rod which is towards the axis of the electric melting pipe.

[0017] The beneficial effects of the utility model lie in:

[0018] The heat generated by the electric melting pipe welding cooperates with the first metal sheet and the second metal sheet to make the observation member slide in the observation window to show the temperature state of the welding, so that the staff can intuitively observe, thereby realizing the synchronization of welding and detection, and the temperature detection during welding can be completed without additional energy.

[0019] Other advantages, objects and features of the utility model will be set forth in the subsequent description, and to some extent, it will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be realized and obtained by the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 It is the internal structure schematic diagram of the electric melting pipe of the utility model;

[0022] Figure 3 It is the structural schematic view of the mounting plate body of the utility model;

[0023] Figure 4 It is the structural schematic view of the mounting slide rod of the utility model.

[0024] In the drawing:

[0025] 1, electrically fused pipe fitting; 101, observation window; 2, observation piece; 201, plate body; 3, first metal sheet; 301, second metal sheet; 4, slide groove; 401, sliding block; 402, push plate; 403, limiting groove; 5, heat-conducting sheet; 6, slide rod; 601, inclined surface; 7, elastic connecting piece. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0028] It should be noted that: similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the above description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "one side", "the other side" and the like is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In addition, the term "same" and the like do not mean that the components must be absolutely the same, but there can be slight differences. The term "vertical" only means that the positional relationship between the components is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0031] Please refer to Figures 1-4 The utility model provides a technical scheme: pipeline electric fusion welding detection device, including the electric fusion pipe fitting 1 of two pipeline opposite one end outside, the outer circle surface of electric fusion pipe fitting 1 opposite both ends are all set up observation window 101, observation piece 2 is slidably connected in observation window 101,

[0032] The electric fusion pipe fitting 1 opposite both ends are all provided with driving piece, the driving piece includes the first metal sheet 3 and second metal sheet 301 of different thermal expansion coefficients, two first metal sheet 3 and second metal sheet 301 opposite one side adhere, transmission part is arranged between the driving piece and observation piece 2, and the transmission part is connected with observation piece 2 and adheres to the side of first metal sheet 3 away from second metal sheet 301.

[0033] In the scheme, the thermal expansion coefficient of the first metal sheet 3 is less than the thermal expansion coefficient of the second metal sheet 301, and specifically, the first metal sheet 3 and the second metal sheet 301 can be combined as titanium alloy / nickel-chromium alloy or invar alloy / yellow copper to match the heat generated by the electric fusion pipe fitting 1 to be sufficient for the welding of the two pipes.

[0034] Specifically, during the welding of the two pipes by the electric fusion pipe fitting 1, when the heat reaches a certain degree, the first metal sheet 3 and the second metal sheet 301 are affected by the generated heat, causing the first metal sheet 3 and the second metal sheet 301 to bend due to the difference in thermal expansion coefficient. When the two bend, they will bend towards the direction of the first metal sheet 3, thereby pushing the transmission part on the side of the first metal sheet 3. Since the transmission part is connected with the observation piece 2, the observation piece 2 is pushed to slide in the observation window 101 along with the transmission part, so that the worker can directly see.

[0035] Conversely, when the welding of the electric fusion pipe fitting 1 is completed, the observation piece 2 does not displace, indicating that the welding temperature is low and the welding effect of the electric fusion pipe fitting 1 and the two pipes is poor.

[0036] That is, the heat generated by the electric fusion pipe fitting 1 welding cooperates with the first metal sheet 3 and the second metal sheet 301 to cause the observation piece 2 to slide in the observation window 101, indicating the temperature state of the welding, so that the worker can directly observe, thereby realizing the synchronization of welding and detection, and completing the temperature detection during welding without additional energy.

[0037] In the embodiment, the observation piece 2 comprises at least two plate bodies 201 of different colors, the plate bodies 201 are connected, and the observation window 101 is located above the sliding track of the plate bodies 201.

[0038] In the scheme, the plate bodies 201 of different colors are combined to correspond to different temperature conditions during welding, the number of colors can be selected according to actual conditions, and in the embodiment of the application, the plate bodies 201 are of two colors of red and green, and the green plate body 201 is located in the observation window 101 in a natural state.

[0039] In specific use, when the green plate body 201 is located in the observation window 101, it indicates that the welding temperature is low; when the red plate body 201 slides into the observation window 101, it indicates that the welding temperature is high.

[0040] That is, the operator can directly observe the color change through the observation window 101 to realize intuitive judgment of the welding state.

[0041] In the embodiment, the transmission member comprises a sliding groove 4, a sliding block 401 and a pushing plate 402, the sliding groove 4 is opened in the electric melting pipe 1 and communicates with the observation window 101, the sliding groove 4 extends along the distribution direction of the plate bodies 201, the sliding block 401 is in sliding cooperation with the sliding groove 4, the pushing plate 402 is connected with the sliding block 401, and the pushing plate 402 is away from the first metal sheet 3 on the side away from the second metal sheet 301.

[0042] In the scheme, the sliding groove 4 and the sliding block 401 form a guide structure along the circumferential direction of the electric melting pipe 1 to ensure the stability of the pushing plate 402 when it is pushed by the first metal sheet 3 and the second metal sheet 301, and the sliding groove 4 communicates with the observation window 101 to make the movement track of the observation piece 2 accurately correspond to the display area.

[0043] In the embodiment, the transmission member further comprises a limiting groove 403 opened in the electric melting pipe 1 and located on the opposite sides of the sliding groove 4, the limiting groove 403 is consistent with the extension direction of the sliding groove 4, a limiting block is slidably connected in the limiting groove 403, and the limiting block is connected with the sliding block 401.

[0044] In the scheme, the limiting groove 403 and the limiting block form a limiting structure for the sliding of the sliding block 401, and also form a supporting structure for the sliding support, so that the sliding block 401 can be stably positioned in the sliding groove 4 for sliding, and the sliding path of the sliding block 401 is constrained to prevent the sliding block 401 from tilting or being stuck due to uneven force during transmission, and further strengthen the transmission stability.

[0045] In the embodiment, the observation window 101, the observation piece 2, the driving member and the transmission member are distributed in plurality along the circumferential direction of the electric melting pipe 1.

[0046] In the scheme, the observation windows 101, the observation member 2, the driving member and the transmission member are distributed along the circumferential direction of the electrically fused pipe member 1, forming multiple detection points of the welding temperature at different circumferential positions of the electrically fused pipe member 1, improving the comprehensiveness of the welding quality detection.

[0047] In the embodiment, the inner circumferential surface of the electrically fused pipe member 1 is provided with the heat-conducting sheet 5 connected with the first metal sheet 3 and the second metal sheet 301.

[0048] In the scheme, the heat-conducting sheet 5 is arranged on the inner wall of the electrically fused pipe member 1, so that it can directly contact the pipeline to be welded, thereby quickly conducting the heat of the welding area to the first metal sheet 3 and the second metal sheet 301, improving the detection accuracy.

[0049] In the embodiment, high-temperature-resistant ceramic heat insulation layers are arranged between the two sides of the heat-conducting sheet 5 and the electrically fused pipe member 1.

[0050] In the embodiment, the observation member 2 includes a sliding rod 6, the sliding rod 6 is in sliding connection with the observation window 101, the sliding rod 6 can slide in the direction close to or away from the axis of the electrically fused pipe member 1, and one end of the sliding rod 6 towards the axis of the electrically fused pipe member 1 is located on one side of the transmission member.

[0051] In the scheme, by the cooperation of the push plate 402 and the first metal sheet 3 and the second metal sheet 301, the sliding block 401 is prompted to slide in the direction of the sliding rod 6, and after the sliding block 401 slides to a specific area, the sliding rod 6 is lifted up, prompting one end of the sliding rod 6 away from the axis of the electrically fused pipe member 1 to be located outside the observation window 101, so that the staff can see.

[0052] In the embodiment, an inclined surface 601 is arranged on the side of the sliding rod 6 close to the transmission member, and the inclined surface 601 extends in the direction away from the transmission member and towards the axis of the electrically fused pipe member 1.

[0053] In the scheme, when the sliding block 401 slides in the direction of the sliding rod 6, it will contact the inclined surface 601 on the sliding rod 6, and as the sliding block 401 continues to slide, the sliding rod 6 is lifted up under the action of the inclined surface 601.

[0054] In the embodiment, an elastic connecting piece 7 is arranged between one end of the sliding rod 6 towards the axis of the electrically fused pipe member 1 and the electrically fused pipe member 1, and the two ends of the elastic connecting piece 7 are respectively connected with the electrically fused pipe member 1 and one end of the sliding rod 6 towards the axis of the electrically fused pipe member 1.

[0055] In a natural state, the sliding rod 6 is always located in the observation window 101 and does not protrude under the limitation of the elastic connecting piece 7.

[0056] In the embodiment, when the slider 401 is displaced to contact the inclined surface 601 on the slide rod 6, the slide rod 6 is lifted by the slider 401 against the elastic force of the elastic connecting piece 7 as the slider 401 continues to move.

[0057] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A testing device for electrofusion welding of pipelines, comprising an electrofusion fitting (1) sleeved on the outer side of opposite ends of two pipelines, characterized in that: The electrofusion fitting (1) has observation windows (101) on the outer circular surfaces at both ends, and observation pieces (2) are slidably connected in the observation windows (101); The electrofusion fitting (1) is provided with driving components at both ends. The driving components include a first metal sheet (3) and a second metal sheet (301) with different coefficients of thermal expansion. The two first metal sheets (3) and the second metal sheet (301) are attached to each other on opposite sides. A transmission component is provided between the driving component and the observation component (2). The transmission component is connected to the observation component (2) and is attached to the side of the first metal sheet (3) away from the second metal sheet (301).

2. The detection device for pipeline electrofusion welding according to claim 1, characterized in that: The observation element (2) includes at least two plates (201) of different colors, and multiple plates (201) are connected together. The observation window (101) is located above the sliding trajectory of the multiple plates (201).

3. The detection device for pipeline electrofusion welding according to claim 1, characterized in that: The transmission component includes a slide groove (4), a slider (401), and a push plate (402). The slide groove (4) is opened inside the electrofusion fitting (1) and communicates with the observation window (101). The slide groove (4) extends along the distribution direction of the plurality of plates (201). The slider (401) slides in conjunction with the slide groove (4). The push plate (402) is connected to the slider (401). The first metal plate (3) of the push plate (402) is on the side away from the second metal plate (301).

4. The detection device for pipeline electrofusion welding according to claim 3, characterized in that: The transmission component also includes a limiting groove (403) located on opposite sides of the slide groove (4) inside the electrofusion fitting (1). The limiting groove (403) extends in the same direction as the slide groove (4). A limiting block is slidably connected inside the limiting groove (403). The limiting block is connected to the slider (401).

5. The detection device for pipeline electrofusion welding according to any one of claims 1-4, characterized in that: The observation window (101), observation element (2), driving element and transmission element are all distributed in multiple ways along the circumferential direction of the electrofusion tube (1).

6. The detection device for pipeline electrofusion welding according to claim 5, characterized in that: The inner circular surface of the electrofusion fitting (1) is provided with a heat-conducting plate (5) that is connected to the first metal plate (3) and the second metal plate (301).

7. The detection device for pipeline electrofusion welding according to claim 6, characterized in that: High-temperature resistant ceramic insulation layers are provided on both sides of the heat-conducting sheet (5) and between the electrofusion tube (1).

8. The detection device for pipeline electrofusion welding according to claim 1, characterized in that: The observation element (2) includes a slide rod (6), which is slidably connected to the observation window (101). The slide rod (6) can slide in a direction close to or away from the axis of the electrofusion tube (1). The end of the slide rod (6) facing the axis of the electrofusion tube (1) is located on one side of the transmission element.

9. The detection device for pipeline electrofusion welding according to claim 8, characterized in that: The slide bar (6) has an inclined surface (601) on the side near the transmission member, and the inclined surface (601) extends toward the axis of the electrofusion tube (1) in a direction away from the transmission member.

10. The detection device for pipeline electrofusion welding according to claim 8, characterized in that: An elastic connector (7) is provided between the end of the slide rod (6) facing the axis of the electrofusion fitting (1) and the electrofusion fitting (1). The two ends of the elastic connector (7) are respectively connected to the electrofusion fitting (1) and the end of the slide rod (6) facing the axis of the electrofusion fitting (1).

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