Container top welding seam leak detection device

Abstract

The utility model discloses a container top welding seam leak detection device, which comprises a foam water ejector, a vacuum pump and a vacuum box, the vacuum pump and the vacuum box are communicated with each other, and the vacuum box comprises a plurality of first cushion blocks and a plurality of second cushion blocks; the box body is provided with a vacuum cavity and an opening communicated with the vacuum cavity, the opening edge of the opening comprises a sealing edge, a first mounting edge and a second mounting edge, the first mounting edge and the second mounting edge are sequentially arranged in the extending direction of the longitudinal beam, the sealing edge is used for being attached to the top cover and the longitudinal beam, the first mounting edge is used for mounting any first cushion block, and the second mounting edge is used for mounting any second cushion block. The second mounting edge is used for mounting any second cushion block, and the sealing edge, the first cushion block and the second cushion block form a sealing opening surrounding a welding seam; the first cushion blocks and the second cushion blocks are provided with matching faces used for being attached to the transition faces of the longitudinal beams, the included angles between the matching faces of the first cushion blocks and the height direction are different, and the included angles between the matching faces of the second cushion blocks and the height direction are different.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of container weld seam leak detection, and particularly relates to a container roof weld seam leak detection device. BACKGROUND

[0002] Refrigerated containers can be used to transport various fresh-keeping foods. In order to ensure the heat insulation performance of the refrigerated container, the container body must have good sealing performance to avoid water leakage and other influences on food.

[0003] In the related art, the weld seam at the top of the container body is completed on a rain test platform. Specifically, the container body is placed on the rain test platform, and water is manually sprayed on the site using a water pipe. Whether water droplets exist in the container is observed to determine whether there is water leakage. However, there is no drainage pipeline in the site, and large-scale water spraying will cause site pollution. SUMMARY

[0004] To solve the technical problem that the current water spraying method pollutes the environment during weld seam leak detection, the application provides a container roof weld seam leak detection device.

[0005] The application provides a container roof weld seam leak detection device. The container includes a longitudinal beam and a top cover. The longitudinal beam has a top surface, a transition surface, and a side surface arranged in sequence. The top surface and the side surface are perpendicular to each other. The transition surface is inclined. The side of the top surface of the longitudinal beam away from the transition surface is welded to the top cover. The leak detection device includes a foam water sprayer, a vacuum pump, and a vacuum box connected in communication. The vacuum box includes:

[0006] A plurality of first pads and a plurality of second pads are provided.

[0007] The container body is provided with a vacuum cavity and an opening connected to the vacuum cavity. The opening includes a sealing edge, a first mounting edge, and a second mounting edge arranged in sequence along the extension direction of the longitudinal beam. The sealing edge is used to fit with the top cover and the longitudinal beam. The first mounting edge is used to mount any first pad. The second mounting edge is used to mount any second pad. The sealing edge, the first pad, and the second pad form a sealing opening around the weld seam.

[0008] The first pad and the second pad are each provided with a fitting surface for fitting with the transition surface of the longitudinal beam. The fitting surfaces of the plurality of first pads have different angles with the height direction. The fitting surfaces of the plurality of second pads have different angles with the height direction.

[0009] In some embodiments, the first pad and the second pad are rubber pads.

[0010] In some embodiments, the first pad and the second pad are both triangular prism-shaped pads, one side wall of the triangular prism-shaped pad constituting the fitting surface.

[0011] In some embodiments, the triangular prism-shaped pad is a right triangular prism-shaped pad.

[0012] In some embodiments, the sealing rim comprises a first rim and a second rim, the first rim, the first mounting rim, the second rim, the second mounting rim being sequentially arranged and connected at the ends to enclose the opening.

[0013] In some embodiments, the first rim comprises a first straight rim section and two top rim sections, one end of the two top rim sections being connected to two ends of the first straight rim section respectively, and the other end being connected to the first mounting rim and the second mounting rim respectively.

[0014] The first straight rim section and the top rim section are perpendicular to each other.

[0015] The second rim comprises a second straight rim section and two side rim sections, one end of the two side rim sections being connected to two ends of the second straight rim section respectively, and the other end being connected to the first mounting rim and the second mounting rim respectively.

[0016] The second straight rim section and the side rim section are perpendicular to each other, the top rim section and the side rim section are perpendicular, and the first straight rim section and the second straight rim section are parallel.

[0017] In some embodiments, the box comprises a body and an elastic ring, the body being provided with a vacuum cavity and a mounting port communicating with the vacuum cavity, and the elastic ring being connected to the mounting port, a ring hole of the elastic ring constituting the opening.

[0018] In some embodiments, the width of the elastic ring is equal to the width of the first pad and the second pad.

[0019] In some embodiments, the box is provided with a visible part, or the box is a transparent box.

[0020] In some embodiments, the box is provided with an operation handle.

[0021] The leak detection device provided by the embodiments of the present application comprises a foam water sprayer and a vacuum pump and a vacuum box in communication. The foam water sprayer can spray foam water into the container, and if there is a leak in the weld, bubbles will appear at the leak position in the vacuum box under the action of the vacuum pump, so that the position of the leak can be determined. The vacuum pump is in communication with the vacuum box, so that the vacuum pump can vacuum the closed space enclosed by the vacuum box and the container, and if there is a leak in the weld, bubbles will form under the action of the vacuum.

[0022] Because only need to spray foam water in the container to test whether the weld has a hole, compared with water test, the amount of foam water is very small, and will not cause site waterlogging, and the environmental pollution is small.

[0023] Because the first pad and the second pad are provided with the matching surface for matching the transition surface of the longitudinal beam, the matching surface of the plurality of first pads has different angles with the height direction, and the matching surface of the plurality of second pads has different angles with the height direction, when the weld needs to be leak tested, the pad with the highest matching degree can be selected according to the inclination angle of the longitudinal beam transition surface of the container to be tested, so that the sealing performance of the closed space is better, and the detection effect is better. The design of the pad makes the leak detection device suitable for containers with different transition surface inclination angles, has high universality, and only increases the number of pads, has few parts, and is low in cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A partial structure schematic diagram of a container is shown.

[0025] Figure 2 A structure schematic diagram of the container of Figure 1 and a vacuum box is shown.

[0026] Figure 3 A partial enlarged view of Figure 2 is shown.

[0027] Figure 4 A front view of a vacuum box is shown.

[0028] Figure 5 A structure schematic diagram of the vacuum box of Figure 4 after removing the first pad and the second pad is shown.

[0029] Figure 6 A top view of the vacuum box of Figure 4 is shown.

[0030] Figure 7 A side view of the vacuum box of Figure 4 is shown.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 200-vacuum box, 210a-first pad, 210b-second pad, 211-matching surface, 220-box body, 221-body, 222-elastic ring, 223-opening, 2231-first installation edge, 2232-second installation edge, 2234-straight edge section, 2235-top edge section, 2236-second edge; 300-container, 310-top cover, 320-longitudinal beam, 321-top surface, 322-transition surface, 323-side surface, 330-side plate, 301-weld. DETAILED DESCRIPTION

[0033] In order for those skilled in the art to which the present application pertains to more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0034] The present application provides a container roof weld leak detection device, only need to spray some foam water, will not cause water accumulation in the site, less pollution to the environment.

[0035] Please refer to Figure 1 , the container 300 includes a roof 310, a side plate 330, and a longitudinal beam 320, the side plate 330 is provided with two, the two side plates 330 are arranged along the width direction of the container 300, the longitudinal beam 320 is also provided with two, and is arranged one by one with the side plate 330, the side plate 330 is welded and connected with the roof 310 through the corresponding longitudinal beam 320, and the weld 301 between the roof 310 and the longitudinal beam 320 is the weld which needs to be detected whether there is a leak hole.

[0036] The outer side of the longitudinal beam 320 has a top surface 321, a transition surface 322 and a side surface 323 arranged in sequence, the top surface 321 and the side surface 323 are perpendicular to each other and flush with the roof 310, the weld 301 which needs to be detected whether there is a leak hole is the position where the top surface 321 is attached to the roof 310, the transition surface 322 is located between the top surface 321 and the side surface 323, the transition surface 322 is arranged obliquely, and the side surface 323 is flush with the side plate 330.

[0037] For the longitudinal beam 320 of the container 300, the inclination angle of the transition surface 322 may be different for different types of containers 300 or different sizes of containers 300.

[0038] Please refer to Figure 2 and Figure 3 The leak detection device provided in the embodiments of the present application includes a foam water sprayer (not shown in the figure) and a vacuum pump (not shown in the figure) and a vacuum box 200 connected therewith.

[0039] The foam water sprayer can spray foam water into the container 300, if the weld 301 has a leak hole, under the action of the vacuum pump, bubbles will appear in the leak hole position in the vacuum box 200, so that the position of the leak hole can be determined. The foam water sprayer can be realized by the structure of a water tank plus a nozzle, the foam water sprayer is prior art, which can be selected according to actual needs, and will not be described in detail in the present application.

[0040] The vacuum pump is in communication with the vacuum box 200, so that the vacuum pump can vacuum the closed space formed by the vacuum box 200 and the container 300. If the weld 301 has a leak, the bubble water will form bubbles under the action of vacuum.

[0041] The vacuum box 200 includes a first pad 210a, a second pad 210b, and a box body 220. The first pad 210a and the second pad 210b are provided in plurality. The box body 220 is provided with a vacuum cavity and an opening 223 in communication with the vacuum cavity. The opening 223 has a sealing edge, a first mounting edge 2231, and a second mounting edge 2232 arranged in sequence along the extension direction of the longitudinal beam 320. The sealing edge is used to fit with the top cover 310 and the longitudinal beam 320. The first mounting edge 2231 is used to mount any first pad 210a. The second mounting edge 2232 is used to mount any second pad 210b. The sealing edge, the first pad 210a, and the second pad 210b form a sealing port around the weld 301. Therefore, the outside of the vacuum box 200 and the container 300 forms a closed space.

[0042] Among them, please refer to Figure 7 The first pad 210a and the second pad 210b are provided with a matching surface 211 used to fit with the transition surface 322 of the longitudinal beam 320. The matching surface 211 of the plurality of first pads 210a has different angles with the height direction. The matching surface 211 of the plurality of second pads 210b has different angles with the height direction. When the weld 301 needs to be leak detected, the pad with the highest fitting degree can be selected according to the inclination angle of the transition surface 322 of the longitudinal beam 320 of the container 300 to be detected, so that the sealing performance of the closed space is better and the detection effect is better. The design of the pad makes the leak detection device of the present application applicable to containers 300 with different inclination angles of the transition surface 322, has high universality, and only increases the number of pads, has few parts, and is low in cost.

[0043] In some embodiments, the first pad 210a and the second pad 210b are rubber pads, so that the rubber pads are in a compressed state through extrusion, improving the sealing effect. In other embodiments, the first pad 210a and the second pad 210b can also be selected from silica gel pads, or a metal block coated with a silica gel sleeve on the outside can also ensure the sealing effect.

[0044] In some embodiments, please refer to Figure 3, the first pad 210a is a triangular prism pad, and the second pad 210b is also a triangular prism pad, and one side wall of the triangular prism pad constitutes the matching surface 211. The triangular prism pad has simple structure and low manufacturing cost, and has low requirements for the first mounting edge 2231 and the second mounting edge 2232 of the box body 220. In other embodiments, the first pad 210a and the second pad 210b can also be provided as semi-cylindrical pads, and the quadrilateral surface of the semi-cylindrical pad constitutes the matching surface 211, and the sealing of the box body 220 and the outer side of the container 300 can also be achieved.

[0045] In some embodiments, the triangular prism pad is a right-angle triangular prism pad, so that the first mounting edge 2231 and the second mounting edge 2232 each include two right-angle edges connected to each other, and the two right-angle edges are respectively attached to two mutually perpendicular side surfaces 323 of the corresponding right-angle triangular prism pad. The relative positions between the triangular prism pad and the box body 220 are more stable, and mutual sliding is less likely to occur, thereby further improving the sealing effect. In other embodiments, the triangular prism pad can also be an acute-angle triangular prism pad, which is not limited in the present application.

[0046] In some embodiments, please refer to Figure 4 , Figure 5 and Figure 6 , the sealing edge includes the first edge and the second edge 2236, the first edge, the first mounting edge 2231, the second edge 2236, and the second mounting edge 2232 are sequentially arranged and connected end to end, and enclose the opening 223.

[0047] In some embodiments, please refer to Figure 6 and Figure 7 , the first edge includes a straight edge section 2234 and two top edge sections 2235, one end of the two top edge sections 2235 is respectively connected to both ends of the straight edge section 2234, and the other end is respectively connected to the first mounting edge 2231 and the second mounting edge 2232. The straight edge section 2234 is attached to the top cover 310, and the top edge section 2235 is attached to the top cover 310 and the top surface 321 of the longitudinal beam 320, so as to enclose the weld 301 into the sealed space. The straight edge section 2234 and the top edge section 2235 are perpendicular to each other, which facilitates the machining of the box body 220. In other embodiments, the included angle between the straight edge section 2234 and the top edge section 2235 can also be obtuse or acute, and the weld 301 can still be enclosed into the sealed space. In yet other embodiments, the first edge can also be curved, which is not limited in the present application.

[0048] In some embodiments, please refer to Figure 5The second edge 2236 can be a straight edge, the second edge 2236 is perpendicular to the side edge section, and the straight edge section 2234 is parallel to the second edge 2236. The second edge 2236 can extend along the axial direction of the longitudinal beam 320 and be attached to the side surface 323 of the longitudinal beam 320. The mating surface 211 of the first pad 210a is arranged at an angle with respect to the side edge section and the second edge 2236, and the mating surface 211 of the second pad 210b is arranged at an angle with respect to the side edge section and the second edge 2236, so as to be attached to the top surface 321, the transition surface 322, and the side surface 323 of the longitudinal beam 320.

[0049] The first edge, the mating surface 211 of the first pad 210a, the second edge 2236, and the mating surface 211 of the second pad 210b are attached to the outer corner surface of the container 300, forming a sealed space.

[0050] In some embodiments, referring to Figure 4 The box body 220 includes a body 221 and an elastic ring 222. The body 221 is provided with a vacuum cavity and a mounting port communicating with the vacuum cavity. The elastic ring 222, which can be a rubber ring, is connected to the mounting port, and the ring hole of the elastic ring 222 constitutes an opening 223. The elastic ring 222 can improve the sealing performance of the vacuum box 200 and the outer side of the container 300. In actual operation, the vacuum box 200 can be manually squeezed to make the vacuum box 200 close to the container 300, so that the elastic ring 222 is compressed and deformed to seal. The elastic ring 222 and the body 221 can be connected by means of gluing, or the body 221 is provided with an annular groove, and the elastic ring 222 is provided with a ring protrusion arranged in the annular groove, so as to realize the connection between the elastic ring 222 and the body 221.

[0051] In some embodiments, the width of the elastic ring 222 is equal to the width of the first pad 210a and the second pad 210b. Here, the width direction can be understood as the width direction of the opening 223. The width of the elastic ring 222 is equal to the width of the first pad 210a and the second pad 210b, the squeezing surface of the elastic ring 222 is large, and the cost is not high. In other embodiments, the width of the elastic ring 222 can be greater than the width of the first pad 210a and the second pad 210b, or the width of the elastic ring 222 can be less than the width of the first pad 210a and the second pad 210b, and the sealing between the vacuum box 200 and the container 300 can still be realized.

[0052] In some embodiments, the box 220 is provided with a visual part, such as an observation window arranged on the box 220 as the visual part, to observe whether bubbles appear in the box 220 through the visual part, so as to determine whether the weld 301 has a hole. In other embodiments, the box 220 is a transparent box 220, for example, a box 220 made of transparent glass, to observe whether bubbles appear through the transparent box 220, so as to determine whether the weld 301 has a hole.

[0053] In some embodiments, the box 220 is provided with an operation handle, which facilitates the operator to press the vacuum box 200 towards the container 300, and also facilitates the operator to take the vacuum box 200, and the operation is more convenient. In some embodiments, the box 220 is provided with a pressure relief valve to balance the air pressure between the vacuum cavity and the outside after the test is completed. The box 220 can also be provided with a pressure gauge for detecting the gas pressure of the vacuum cavity, to monitor the pressure in the vacuum cavity during the leak detection process, to determine whether the designed pressure value is reached.

[0054] When the leak detection device provided in the present application is used, appropriate first and second pads 210a and 210b are selected according to the inclination angle of the transition surface 322 of the longitudinal beam 320, and are adhered to the first and second mounting edges 2231 and 2232. Then, the soapy water is sprayed into the container 300 at the position corresponding to the weld through the foam water sprayer, and then the operator presses the operation handle manually, so that the vacuum box 200 is pressed at the weld position, and the first and second pads 210a and 210b are respectively attached to the transition surface 322 of the longitudinal beam 320. After sealing and pressing tightly, the vacuum pump is started, and whether bubbles appear in the vacuum cavity is observed. If bubbles appear in the vacuum box 200, it indicates that there is a hole at the bubble position. If there are no bubbles, it indicates that the weld has no hole and the sealing is good. After the test is completed, the pressure relief valve is opened, the air pressure inside and outside is balanced, and the vacuum box 200 is transferred to the next target test position.

[0055] The leak detection device provided in the present application only needs to spray foam water into the container 300 to test whether the weld has a hole, compared with the water spraying test, the amount of foam water is very small, and it will not cause water accumulation on the site, and the environmental pollution is small.

[0056] Since the first pad 210a and the second pad 210b are both provided with the matching surface 211 for abutting with the transition surface 322 of the longitudinal beam 320, the matching surfaces 211 of the plurality of first pads 210a have different angles with the height direction, the matching surfaces 211 of the plurality of second pads 210b have different angles with the height direction, when the weld joint needs to be detected, the pad with the highest abutting degree can be selected according to the inclination angle of the transition surface 322 of the longitudinal beam 320 of the container 300 to be detected, so that the sealing performance of the closed space is better, and the detection effect is better. The design of the pad makes the leak detection device suitable for containers 300 with different inclination angles of the transition surface 322, has high universality, and only the number of pads is increased, the number of parts is small, and the cost is low.

[0057] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature, which can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0058] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0059] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In addition, the descriptions in the present application such as "first", "second", etc. are only for the purpose of description and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0061] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the claims and their equivalents.

Claims

1. A container roof weld inspection apparatus for a container comprising a longitudinal beam having a top surface, a transition surface and a side surface arranged in that order, the top surface and the side surface being perpendicular to each other, the transition surface being arranged obliquely, the top surface of the longitudinal beam on a side away from the transition surface being welded to a roof, characterized in that, The leak detection device comprises a foam water sprayer, a vacuum pump and a vacuum box connected in communication, wherein the vacuum box comprises: a plurality of first pads and a plurality of second pads; a box body provided with a vacuum cavity and an opening in communication with the vacuum cavity, wherein the opening is provided with a sealing edge, a first mounting edge and a second mounting edge arranged in sequence along the extending direction of the longitudinal beam, the sealing edge is used to fit with the top cover and the longitudinal beam, the first mounting edge is used to mount any first pad, and the second mounting edge is used to mount any second pad, and the sealing edge, the first pad and the second pad form a sealing opening around the weld; wherein the first pad and the second pad are each provided with a fitting surface used to fit with the transition surface of the longitudinal beam, the fitting surfaces of the plurality of first pads have different angles with the height direction, and the fitting surfaces of the plurality of second pads have different angles with the height direction.

2. A container roof weld inspection apparatus according to claim 1, characterised in that, The first pad and the second pad are rubber pads.

3. A container roof weld inspection apparatus according to claim 2, characterised in that, The first pad and the second pad are triangular prism pads, and one side wall of the triangular prism pad constitutes the fitting surface.

4. A container roof weld inspection apparatus according to claim 3, characterised in that, The triangular prism pad is a right triangular prism pad.

5. A container roof weld inspection apparatus according to any one of claims 1-4, characterized in that, The sealing edge comprises a first edge and a second edge, the first edge, the first mounting edge, the second edge and the second mounting edge are arranged in sequence and connected in a loop to enclose the opening.

6. A container roof weld inspection apparatus according to claim 5, characterised in that, The first edge comprises a straight edge section and two top edge sections, one end of each of the two top edge sections is connected to the two ends of the straight edge section, and the other end of each of the two top edge sections is connected to the first mounting edge and the second mounting edge, respectively. The straight edge section and the top edge section are perpendicular to each other, and the straight edge section is parallel to the second edge.

7. A container roof weld inspection apparatus according to any one of claims 1-4, characterized in that, The box body comprises a main body and an elastic ring, the main body is provided with a vacuum cavity and a mounting opening in communication with the vacuum cavity, the elastic ring is connected to the mounting opening, and the ring hole of the elastic ring constitutes the opening.

8. A container roof weld inspection apparatus according to claim 7, characterised in that, The width of the elastic ring is equal to the width of the first pad and the second pad.

9. The container roof weld leak detection apparatus of any one of claims 1-4, wherein, The box body is provided with a visible part, or the box body is a transparent box body.

10. The container roof weld inspection apparatus of any one of claims 1-4, wherein, The box body is provided with an operation handle.

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