Device and method for detecting leakage of vacuumizing pipeline

Abstract

The invention relates to a device and a method for detecting leakage of a vacuumizing pipeline. The structure comprises an air pipeline main body, a vacuum pipeline main body, a communicating pipe and a first communicating valve, a vacuum pipeline body is arranged below the air pipeline body, the lower surface of the air pipeline body is communicated with a communicating pipe, the upper surface of the vacuum pipeline body is communicated with the bottom end of the communicating pipe, a first communicating valve is installed on the communicating pipe, and the top end of the communicating pipe is communicated with the lower surface of the air pipeline body by installing the communicating pipe and the first communicating valve. Then the bottom end of the communicating pipe is communicated with the upper surface of the vacuum pipeline body, the first communicating valve is opened, the positive pressure air in the air pipeline body enters the vacuum pipeline body through the communicating pipe, the positive pressure air escapes from the leakage point of the vacuum pipeline body, and leakage point detection is conducted on the vacuum pipeline body.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pipelines, and in particular to a device and method for detecting leakage of a vacuum pipeline. Background Art

[0002] In the vulcanizer workshop, vacuum pipes are installed to connect to the vulcanizers, and products are processed in a negative pressure environment. At the same time, the workshop is also equipped with positive pressure air pipes for cleaning the surface of the vulcanizers. However, when a leak occurs in the vacuum pipe, it becomes particularly difficult to find the leak point. This is because the vacuum pipe is connected to hundreds of vulcanizers, and the leak may occur at any location, so the investigation scope is large. Moreover, the pipeline layout is complex, and the leak point is not easy to be directly observed. Therefore, in such a large-scale and complex system, once the vacuum pipe leaks, accurately and efficiently locating the leak point becomes a major challenge.

[0003] In order to effectively detect the leakage points of vacuum pipes, an innovative method of connecting positive-pressure air pipes and vacuum pipes was adopted. During the specific operation, the positive-pressure air inside the positive-pressure air pipe is introduced into the vacuum pipe. Since the vacuum pipe is originally in a negative pressure state, an obvious pressure difference will be formed after the positive-pressure air enters. Under the action of this pressure difference, if there is a leakage point in the vacuum pipe, the positive-pressure air will quickly escape through the leakage point. This escape process will produce detectable abnormal phenomena, such as airflow sound, pressure fluctuations, etc. The inspectors can capture these abnormal signals through professional equipment to accurately locate the leakage point. This method cleverly utilizes the pressure difference between positive and negative pressure, making the originally imperceptible leakage points "visible and perceptible", which not only greatly improves the detection efficiency, but also reduces the difficulty and cost of manual investigation, and provides a strong guarantee for the maintenance and safe operation of the vacuum pipe.

[0004] Therefore, in order to solve the above problems, a new device and method for detecting leakage of vacuum pipelines are proposed. Summary of the Invention

[0005] In order to overcome the problems existing in the related art, the present invention provides a vacuum pipe leakage detection device and detection method, which can connect the positive pressure air pipe with the vacuum pipe. The positive pressure air will escape from the leakage point of the vacuum pipe, and the vacuum pipe can be detected for leakage.

[0006] To achieve the above objectives, the present invention provides, in a first aspect, a device for detecting leakage in a vacuum pipeline, comprising: An air duct body, a vacuum duct body, a connecting pipe, and a first connecting valve; A vacuum pipe body is provided below the air pipe body. The lower surface of the air pipe body is connected with a connecting pipe. The upper surface of the vacuum pipe body is connected with the bottom end of the connecting pipe. A first connecting valve is installed on the connecting pipe.

[0007] Furthermore, a cartridge-type electric heater connected to the connecting pipe is provided above the first connecting valve, and an infrared temperature detector is provided on one side of the vacuum pipe body.

[0008] Furthermore, second connecting valves are installed at equal intervals on the main body of the air pipe, and pressure regulating valves are installed at equal intervals on the main body of the vacuum pipe.

[0009] Furthermore, the infrared temperature detector is equipped with a rotating mechanism for switching angles, a lifting and rotating mechanism for lifting and rotating is installed at the bottom of the rotating mechanism, a first moving mechanism for longitudinal movement is installed at the bottom of the lifting and rotating mechanism, and a second moving mechanism for lateral movement is installed at the bottom of the first moving mechanism.

[0010] Furthermore, the rotating mechanism includes a rotating mounting seat, a rotating rod, a connecting piece, an L-shaped rack, a first electric push rod and a limit block; A rotating mounting seat is provided on one side of the infrared temperature detector, which is rotatably connected to a rotating rod on the rotating mounting seat, one end of the rotating rod is connected to the surface of one side of the rotating mounting seat, a connecting piece is installed on the infrared temperature detector, the connecting piece is bolted to the rotating rod, one end of the rotating rod is fixedly connected to a flat gear, an L-shaped rack is slidably installed on the rotating mounting seat, the L-shaped rack is meshed with the flat gear at one end of the rotating rod, a first electric push rod is fixedly installed on the rotating mounting seat, the moving end is fixedly connected to the bottom end of the L-shaped rack, a rectangular groove is symmetrically opened on the surface of one side of the rotating mounting seat, a limiting block is symmetrically fixedly connected to the L-shaped rack, and the limiting block is slidably connected to the rectangular groove on the surface of the rotating mounting seat.

[0011] Furthermore, the lifting and rotating mechanism includes a lifting mounting shell, a second electric push rod, a guide rod, a protective shell, a first motor, an annular groove and a balance rod; A lifting mounting shell is provided below the rotating mechanism, and a second electric push rod is installed inside the lifting mounting shell. The moving end of the second electric push rod is connected to the bottom end of the rotating mechanism. A guide rod is symmetrically slidably penetrated on the lifting mounting shell, and the top of the guide rod is connected to the rotating mechanism. A protective shell is provided below the lifting mounting shell, and a first motor with an output end fixedly connected to the lower surface of the lifting mounting shell is installed inside the protective shell. An annular groove is provided on the upper surface of the protective shell, and a balance bar is symmetrically fixedly connected to the lower surface of the lifting mounting shell, and the balance bar is slidably connected to the annular groove.

[0012] Further, the first moving mechanism includes a moving mounting housing, a first moving block, a first threaded rod and a second motor; A mobile mounting shell is provided below the lifting and rotating mechanism, and a first moving block is slidably installed inside the mobile mounting shell. The top of the first moving block is connected to the bottom end of the lifting and rotating mechanism, and a first threaded rod that is meshed with the first moving block is rotatably connected inside the mobile mounting shell. A second motor is installed on the mobile mounting shell, and the output shaft of the second motor is fixedly connected to one end of the first threaded rod.

[0013] Furthermore, the second moving mechanism includes a support base, a second moving block, a second threaded rod and a third motor; A support base is provided under the first moving mechanism, and a second moving block is slidably installed inside the support base. The top of the second moving block is connected to the bottom end of the first moving mechanism, and a second threaded rod that is rotatably connected to the second moving block is provided inside the support base. A third motor is installed on the support base, and the output shaft of the third motor is fixedly connected to one end of the second threaded rod.

[0014] Furthermore, the second moving mechanism further includes a guide groove and a guide block; The upper surface of the support seat is symmetrically provided with guide grooves, the interior of the guide grooves is slidably connected with guide blocks, and the top end of the guide blocks is connected to the bottom end of the first moving mechanism.

[0015] A vacuum pipeline leakage detection method comprising: A1: First, connect the top of the connecting pipe to the lower surface of the air duct body, and then connect the bottom of the connecting pipe to the upper surface of the vacuum duct body. The first connecting valve is opened, and the positive pressure air inside the air duct body enters the vacuum duct body through the connecting pipe. The positive pressure air will escape through the leak point of the vacuum duct body, and the vacuum duct body will be tested for leaks. A2: Positive-pressure air inside the air duct body enters the cartridge electric heater for heating. The heated air then passes through the connecting pipe and enters the vacuum duct body. The heated positive-pressure air is then discharged from the leak point in the vacuum duct body, heating the air around the leak point. An infrared temperature detector scans the surface of the vacuum duct body, detects areas with elevated air temperature, and accurately locates the leak point in the vacuum duct body. A3: When positive-pressure air is transported inside the air duct body, the second connecting valve can adjust the flow rate. After the heated positive-pressure air enters the vacuum duct body, the internal pressure of the vacuum duct body changes. The pressure regulating valve adjusts the pressure inside the vacuum duct body to ensure the internal pressure balance of the vacuum duct body. A4, the first electric push rod on the surface of the rotating mounting base is started, and the moving end of the first electric push rod is extended and retracted, driving the L-shaped rack to move up and down. The L-shaped rack contacts the flat gear at one end of the rotating rod, driving the rotating rod to rotate. The connecting piece rotates with the rotating rod, facilitating the adjustment of the detection angle of the infrared temperature detector. When the L-shaped rack moves up and down, the limit block slides along the rectangular inner wall on one side of the rotating mounting base to ensure the stable movement of the L-shaped rack; A5. The second electric push rod inside the lifting installation shell is activated. The moving end of the second electric push rod is extended and retracted, driving the rotating mechanism to move up and down, and then driving the infrared temperature detector to move up and down to adjust the height of the infrared temperature detector. When the rotating mechanism moves up and down, the guide rod slides along the surface of the lifting installation shell. The first motor inside the protective shell is activated. The output shaft of the first motor drives the lifting installation shell to rotate, facilitating the control of the rotation of the infrared temperature detector. When the lifting installation shell rotates, the balance bar slides inside the annular groove to ensure stable rotation of the lifting installation shell. A6, the second motor on the mobile mounting housing is started, and the output shaft of the second motor drives the first threaded rod to rotate inside the mobile mounting housing. The rotation direction of the second motor output shaft is adjusted to control the forward and backward movement of the first movable block, driving the rotation mechanism and the lifting and rotating mechanism to move forward and backward, thereby driving the infrared temperature detector to move forward and backward; A7, the third motor on the support base is started, and the output shaft of the third motor drives the second threaded rod to rotate inside the support base. The rotation direction of the output shaft of the third motor is adjusted to control the left and right movement of the second movable block, driving the first movable mechanism to move left and right, and then driving the infrared temperature detector to move left and right. When the first movable mechanism moves left and right, the guide block slides inside the guide groove to guide the first movable mechanism.

[0016] The technical solution provided by the present invention can have the following beneficial effects: In this example, by installing a connecting tube and a first connecting valve, the top end of the connecting tube is connected to the lower surface of the air duct body, and then the bottom end of the connecting tube is connected to the upper surface of the vacuum duct body. The first connecting valve is opened, and the positive pressure air inside the air duct body enters the vacuum duct body through the connecting tube. The positive pressure air will escape through the leakage point of the vacuum duct body, and the vacuum duct body will be detected for leakage.

[0017] In this example, by installing a cartridge electric heater and an infrared temperature detector, the positive-pressure air inside the air duct body enters the cartridge electric heater for heating. The heated air enters the vacuum duct body through the connecting pipe. The heated positive-pressure air is discharged from the leak point of the vacuum duct body, heating the air around the leak point. The infrared temperature detector scans the surface of the vacuum duct body, detects the area with increased air temperature, and accurately locates the leak point of the vacuum duct body.

[0018] In this example, by installing the second connecting valve and the pressure regulating valve, when positive-pressure air is transported inside the air duct body, the second connecting valve can adjust the flow rate. After the heated positive-pressure air enters the vacuum duct body, the pressure inside the vacuum duct body changes. The pressure regulating valve adjusts the pressure inside the vacuum duct body to ensure the pressure balance inside the vacuum duct body.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of one angle shown in an embodiment of the present invention; Figure 2 is a schematic diagram of the overall structure from another angle showing an embodiment of the present invention; Figure 3 1 is a schematic structural diagram of a cartridge electric heater according to an embodiment of the present invention; Figure 4 1 is a schematic diagram showing the position of an infrared temperature detector according to an embodiment of the present invention; Figure 5 1 is a schematic structural diagram of a rotating mechanism according to an embodiment of the present invention; Figure 6 1 is a schematic structural diagram of a lifting and rotating mechanism according to an embodiment of the present invention; Figure 7 is a schematic structural diagram of a first moving mechanism shown in an embodiment of the present invention; Figure 8 It is a schematic structural diagram of a second moving mechanism shown in an embodiment of the present invention.

[0022] The corresponding relationship between the illustration labels and component names in the figure is as follows: 1. Air duct body; 2. Vacuum duct body; 3. Connecting pipe; 4. First connecting valve; 5. Cartridge electric heater; 6. Infrared temperature detector; 7. Second connecting valve; 8. Pressure regulating valve; 9. Rotation mechanism; 91. Rotation mounting seat; 92. Rotation rod; 93. Connecting piece; 94. L-shaped rack; 95. First electric push rod; 96. Limit block; 10. Lifting and rotating mechanism; 101. Lifting mounting housing; 102. Second electric push rod; 103. Guide rod; 104. Protective housing; 105. First motor; 106. Annular groove; 107. Balance rod; 11. First moving mechanism; 111. Moving mounting housing; 112. First moving block; 113. First threaded rod; 114. Second motor; 12. Second moving mechanism; 121. Support seat; 122. Second moving block; 123. Second threaded rod; 124. Third motor; 125. Guide groove; 126. Guide block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary persons in this field without making creative work are within the scope of protection of the present invention. The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described here. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to be able to fully convey the scope of the present invention to those skilled in the art.

[0024] The terms used in this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The singular forms "a," "the," and "the" used in this invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0025] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0026] How to design a detection device that can accurately locate the leakage of vacuum pipelines is the primary technical problem that technicians need to solve.

[0027] To address the above problems, an embodiment of the present invention provides a device and method for detecting leakage in a vacuum pipe. The structure can connect a positive-pressure air pipe with a vacuum pipe. Positive-pressure air will escape from the leakage point of the vacuum pipe, and the vacuum pipe can be detected for leakage.

[0028] The technical solution of the embodiment of the present invention (Embodiment 1) is described in detail below with reference to the accompanying drawings.

[0029] Figure 1This is a schematic diagram of the overall structure of one angle shown in an embodiment of the present invention; Figure 2 is a schematic diagram of the overall structure from another angle showing an embodiment of the present invention; Figure 3 1 is a schematic structural diagram of a cartridge electric heater according to an embodiment of the present invention; Figure 4 1 is a schematic diagram of the position of an infrared temperature detector according to an embodiment of the present invention; Figure 5 1 is a schematic diagram of the structure of a rotating mechanism according to an embodiment of the present invention; Figure 6 1 is a schematic structural diagram of a lifting and rotating mechanism according to an embodiment of the present invention; Figure 7 is a schematic structural diagram of a first moving mechanism shown in an embodiment of the present invention; Figure 8 It is a schematic structural diagram of a second moving mechanism shown in an embodiment of the present invention.

[0030] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The vacuum pipeline leakage detection device specifically includes: Air duct body 1, vacuum duct body 2, connecting pipe 3 and first connecting valve 4; A vacuum duct body 2 is provided below the air duct body 1 . A connecting pipe 3 is connected to the lower surface of the air duct body 1 . The upper surface of the vacuum duct body 2 is connected to the bottom end of the connecting pipe 3 . A first connecting valve 4 is installed on the connecting pipe 3 .

[0031] Specifically, a cartridge electric heater 5 communicating with the communication pipe 3 is provided above the first communication valve 4 , and an infrared temperature detector 6 is provided on one side of the vacuum pipe body 2 .

[0032] Specifically, the second connecting valves 7 are equidistantly installed on the air pipe body 1 , and the pressure regulating valves 8 are equidistantly installed on the vacuum pipe body 2 .

[0033] Specifically, the infrared temperature detector 6 is equipped with a rotating mechanism 9 for switching angles, a lifting and rotating mechanism 10 for lifting and rotating is installed at the bottom of the rotating mechanism 9, a first moving mechanism 11 for longitudinal movement is installed at the bottom of the lifting and rotating mechanism 10, and a second moving mechanism 12 for lateral movement is installed at the bottom of the first moving mechanism 11.

[0034] Specifically, the rotating mechanism 9 includes a rotating mounting seat 91, a rotating rod 92, a connecting piece 93, an L-shaped rack 94, a first electric push rod 95 and a limit block 96; A rotating mounting seat 91 is provided on one side of the infrared temperature detector 6, and a rotating rod 92 is rotatably connected to the rotating mounting seat 91. One end of the rotating rod 92 is connected to the surface of one side of the rotating mounting seat 91. A connecting piece 93 is installed on the infrared temperature detector 6, and the connecting piece 93 is bolted to the rotating rod 92. One end of the rotating rod 92 is fixedly connected to a flat gear. An L-shaped rack 94 is slidably installed on the rotating mounting seat 91, and the L-shaped rack 94 is meshed with the flat gear at one end of the rotating rod 92. A first electric push rod 95 is fixedly installed on the rotating mounting seat 91, and a moving end is fixedly connected to the bottom end of the L-shaped rack 94. A rectangular groove is symmetrically provided on the surface of one side of the rotating mounting seat 91, and a limiting block 96 is symmetrically fixedly connected to the L-shaped rack 94. The limiting block 96 is slidably connected to the rectangular groove on the surface of the rotating mounting seat 91.

[0035] Specifically, the lifting and rotating mechanism 10 includes a lifting installation shell 101, a second electric push rod 102, a guide rod 103, a protective shell 104, a first motor 105, an annular groove 106 and a balance rod 107; The rotating mechanism 9 is provided with a lifting installation shell 101 below, a second electric push rod 102 is installed inside the lifting installation shell 101, the moving end of the second electric push rod 102 is connected to the bottom end of the rotating mechanism 9, a guide rod 103 is symmetrically slidably inserted on the lifting installation shell 101, the top of the guide rod 103 is connected to the rotating mechanism 9, a protective shell 104 is provided below the lifting installation shell 101, a first motor 105 whose output end is fixedly connected to the lower surface of the lifting installation shell 101 is installed inside the protective shell 104, an annular groove 106 is opened on the upper surface of the protective shell 104, a balance rod 107 is symmetrically fixedly connected to the lower surface of the lifting installation shell 101, and the balance rod 107 is slidably connected to the annular groove 106.

[0036] Specifically, the first moving mechanism 11 includes a moving mounting shell 111 , a first moving block 112 , a first threaded rod 113 , and a second motor 114 ; A movable mounting shell 111 is provided below the lifting and rotating mechanism 10, and a first movable block 112 is slidably installed inside the movable mounting shell 111. The top of the first movable block 112 is connected to the bottom end of the lifting and rotating mechanism 10, and a first threaded rod 113 that is rotatably connected to the inside of the movable mounting shell 111 and meshed with the first movable block 112 is provided. A second motor 114 is installed on the movable mounting shell 111, and the output shaft of the second motor 114 is fixedly connected to one end of the first threaded rod 113.

[0037] Specifically, the second moving mechanism 12 includes a support base 121, a second moving block 122, a second threaded rod 123 and a third motor 124; A support base 121 is provided under the first moving mechanism 11, and a second moving block 122 is slidably installed inside the support base 121. The top of the second moving block 122 is connected to the bottom end of the first moving mechanism 11, and a second threaded rod 123 that is rotatably connected to the support base 121 and meshed with the second moving block 122 is provided. A third motor 124 is installed on the support base 121, and the output shaft of the third motor 124 is fixedly connected to one end of the second threaded rod 123.

[0038] Specifically, the second moving mechanism 12 further includes a guide groove 125 and a guide block 126; The support base 121 is symmetrically provided with guide grooves 125 on its upper surface. A guide block 126 is slidably connected inside the guide groove 125 . The top end of the guide block 126 is connected to the bottom end of the first moving mechanism 11 .

[0039] A vacuum pipeline leakage detection method comprising: A1: First, connect the top of the connecting tube 3 to the lower surface of the air duct body 1, and then connect the bottom of the connecting tube 3 to the upper surface of the vacuum duct body 2. Open the first connecting valve 4, and the positive-pressure air inside the air duct body 1 will enter the vacuum duct body 2 through the connecting tube 3. The positive-pressure air will escape through the leak point of the vacuum duct body 2, and the vacuum duct body 2 will be tested for leaks. A2: The positive-pressure air inside the air duct body 1 enters the cartridge electric heater 5 and is heated. The heated air then passes through the connecting pipe 3 and enters the vacuum duct body 2. The heated positive-pressure air is then discharged from the leak point of the vacuum duct body 2, heating the air around the leak point. The infrared temperature detector 6 scans the surface of the vacuum duct body 2, detects areas with elevated air temperature, and accurately locates the leak point of the vacuum duct body 2. A3: When positive-pressure air is transported inside the air duct body 1, the second connecting valve 7 can adjust the flow rate. After the heated positive-pressure air enters the vacuum duct body 2, the internal pressure of the vacuum duct body 2 changes. The pressure regulating valve 8 adjusts the pressure inside the vacuum duct body 2 to ensure the internal pressure balance of the vacuum duct body 2. A4, the first electric push rod 95 on the surface of the rotating mounting seat 91 is started, and the moving end of the first electric push rod 95 is extended and retracted, driving the L-shaped rack 94 to move up and down. The L-shaped rack 94 contacts the flat gear at one end of the rotating rod 92, driving the rotating rod 92 to rotate. The connecting piece 93 rotates with the rotating rod 92, making it convenient to adjust the detection angle of the infrared temperature detector 6. When the L-shaped rack 94 moves up and down, the limit block 96 slides along the rectangular inner wall on one side of the rotating mounting seat 91 to ensure stable movement of the L-shaped rack 94; A5. The second electric push rod 102 inside the lifting mounting shell 101 is activated. The moving end of the second electric push rod 102 is extended and retracted, driving the rotating mechanism 9 to move up and down, and then driving the infrared temperature detector 6 to move up and down, adjusting the height of the infrared temperature detector 6. When the rotating mechanism 9 moves up and down, the guide rod 103 slides along the surface of the lifting mounting shell 101. The first motor 105 inside the protective shell 104 is activated. The output shaft of the first motor 105 drives the lifting mounting shell 101 to rotate, facilitating the control of the rotation of the infrared temperature detector 6. When the lifting mounting shell 101 rotates, the balance bar 107 slides inside the annular groove 106 to ensure stable rotation of the lifting mounting shell 101. A6: The second motor 114 on the movable mounting housing 111 is started. The output shaft of the second motor 114 drives the first threaded rod 113 to rotate inside the movable mounting housing 111. The rotation direction of the output shaft of the second motor 114 is adjusted to control the forward and backward movement of the first movable block 112, thereby driving the rotation mechanism 9 and the lifting and rotating mechanism 10 to move forward and backward, and further driving the infrared temperature detector 6 to move forward and backward. A7, the third motor 124 on the support base 121 is started, and the output shaft of the third motor 124 drives the second threaded rod 123 to rotate inside the support base 121. The rotation direction of the output shaft of the third motor 124 is adjusted to control the second movable block 122 to move left and right, driving the first movable mechanism 11 to move left and right, and then driving the infrared temperature detector 6 to move left and right. When the first movable mechanism 11 moves left and right, the guide block 126 slides inside the guide groove 125 to guide the first movable mechanism 11.

[0040] In this embodiment, how to detect the leakage of the vacuum pipe body 2, combined with Figure 1 and Figure 2 The specific implementation method is: first connect the top end of the connecting tube 3 with the lower surface of the air duct body 1, and then connect the bottom end of the connecting tube 3 with the upper surface of the vacuum duct body 2. The first connecting valve 4 is opened, and the positive pressure air inside the air duct body 1 enters the vacuum duct body 2 through the connecting tube 3. The positive pressure air will escape through the leakage point of the vacuum duct body 2, and the vacuum duct body 2 will be detected for leakage.

[0041] In this embodiment, how to accurately locate the leak point of the vacuum pipe body 2, combined with Figure 3 and Figure 4The specific implementation method is as follows: the positive-pressure air inside the air duct body 1 enters the inside of the cartridge electric heater 5 for heating, and the heated air enters the inside of the vacuum duct body 2 through the connecting tube 3. The heated positive-pressure air is discharged from the leakage point of the vacuum duct body 2, heating the air around the leakage point. The infrared temperature detector 6 scans the surface of the vacuum duct body 2, detects the area where the air temperature rises, and accurately locates the leakage point of the vacuum duct body 2. When the positive-pressure air is transported inside the air duct body 1, the second connecting valve 7 can adjust the flow rate. After the heated positive-pressure air enters the inside of the vacuum duct body 2, the internal pressure of the vacuum duct body 2 changes. The pressure regulating valve 8 adjusts the pressure inside the vacuum duct body 2 to ensure the internal pressure balance of the vacuum duct body 2.

[0042] In this embodiment, how the rotating mechanism 9 controls the infrared temperature detector 6 to adjust the detection angle is combined with Figure 5 The specific implementation method is as follows: the first electric push rod 95 on the surface of the rotating mounting seat 91 is started, and the moving end of the first electric push rod 95 is extended and retracted, driving the L-shaped rack 94 to move up and down. The L-shaped rack 94 contacts the flat gear at one end of the rotating rod 92, driving the rotating rod 92 to rotate, and the connecting piece 93 rotates with the rotating rod 92, which facilitates the adjustment of the detection angle of the infrared temperature detector 6. When the L-shaped rack 94 moves up and down, the limit block 96 slides along the rectangular inner wall on one side of the rotating mounting seat 91 to ensure that the L-shaped rack 94 moves stably.

[0043] In this embodiment, how does the lifting and rotating mechanism 10 control the lifting and rotation of the infrared temperature detector 6? Figure 6 The specific implementation is as follows: the second electric push rod 102 inside the lifting installation shell 101 is started, and the moving end of the second electric push rod 102 is extended and retracted, driving the rotating mechanism 9 to move up and down, and then driving the infrared temperature detector 6 to move up and down to adjust the height of the infrared temperature detector 6. When the rotating mechanism 9 moves up and down, the guide rod 103 slides along the surface of the lifting installation shell 101, and the first motor 105 inside the protective shell 104 is started. The output shaft of the first motor 105 drives the lifting installation shell 101 to rotate, which is convenient for controlling the rotation of the infrared temperature detector 6. When the lifting installation shell 101 rotates, the balance bar 107 slides inside the annular groove 106 to ensure stable rotation of the lifting installation shell 101.

[0044] In this embodiment, how the first moving mechanism 11 controls the infrared temperature detector 6 to move forward and backward is combined with Figure 7 The specific implementation is as follows: the second motor 114 on the mobile mounting shell 111 is started, and the output shaft of the second motor 114 drives the first threaded rod 113 to rotate inside the mobile mounting shell 111, and the rotation direction of the output shaft of the second motor 114 is adjusted to control the first moving block 112 to move forward and backward, driving the rotating mechanism 9 and the lifting and rotating mechanism 10 to move forward and backward, and then driving the infrared temperature detector 6 to move forward and backward.

[0045] In this embodiment, how the second moving mechanism 12 controls the infrared temperature detector 6 to move left and right is combined with Figure 8 The specific implementation is as follows: the third motor 124 on the support base 121 is started, and the output shaft of the third motor 124 drives the second threaded rod 123 to rotate inside the support base 121, and the rotation direction of the output shaft of the third motor 124 is adjusted to control the second moving block 122 to move left and right, driving the first moving mechanism 11 to move left and right, and then driving the infrared temperature detector 6 to move left and right. When the first moving mechanism 11 moves left and right, the guide block 126 slides inside the guide groove 125 to guide the first moving mechanism 11.

[0046] The scheme of the present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own focus. For parts not described in detail in a particular embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules mentioned in this description are not necessarily required for the present invention. In addition, it is understood that the steps in the method of the embodiment of the present invention can be adjusted in order, combined, or deleted according to actual needs, and the structures in the device of the embodiment of the present invention can be combined, divided, or deleted according to actual needs.

[0047] While various embodiments of the present invention have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A device for detecting leakage in a vacuum pipeline, characterized in that: include: An air duct body (1), a vacuum duct body (2), a connecting pipe (3), and a first connecting valve (4); A vacuum duct body (2) is provided below the air duct body (1); a connecting pipe (3) is connected to the lower surface of the air duct body (1); an upper surface of the vacuum duct body (2) is connected to the bottom end of the connecting pipe (3); and a first connecting valve (4) is installed on the connecting pipe (3).

2. The vacuum pipeline leakage detection device according to claim 1, characterized in that: A cartridge-type electric heater (5) in communication with the connecting pipe (3) is provided above the first connecting valve (4), and an infrared temperature detector (6) is provided on one side of the vacuum pipe body (2).

3. The vacuum pipeline leakage detection device according to claim 1, characterized in that: Second connecting valves (7) are installed at equal intervals on the air pipe body (1), and pressure regulating valves (8) are installed at equal intervals on the vacuum pipe body (2).

4. The device for detecting leakage of a vacuum pipeline according to claim 2, characterized in that: The infrared temperature detector (6) is provided with a rotating mechanism (9) for switching angles, a lifting and rotating mechanism (10) for lifting and rotating is provided at the bottom end of the rotating mechanism (9), a first moving mechanism (11) for longitudinal movement is provided at the bottom end of the lifting and rotating mechanism (10), and a second moving mechanism (12) for lateral movement is provided at the bottom end of the first moving mechanism (11).

5. The device for detecting leakage of a vacuum pipeline according to claim 4, characterized in that: The rotating mechanism (9) comprises a rotating mounting seat (91), a rotating rod (92), a connecting piece (93), an L-shaped rack (94), a first electric push rod (95) and a limit block (96); A rotating mounting seat (91) is provided on one side of the infrared temperature detector (6), and a rotating rod (92) is rotatably connected to the rotating mounting seat (91), and one end of the rotating rod (92) is connected to the surface of one side of the rotating mounting seat (91). A connecting piece (93) is installed on the infrared temperature detector (6), and the connecting piece (93) is bolted to the rotating rod (92). One end of the rotating rod (92) is fixedly connected to a flat gear. An L-shaped rack (94) is slidably installed on the rotating mounting seat (91), and the L-shaped rack (94) is meshed with the flat gear at one end of the rotating rod (92). A first electric push rod (95) is fixedly installed on the rotating mounting seat (91), and a moving end is fixedly connected to the bottom end of the L-shaped rack (94). A rectangular groove is symmetrically opened on the surface of one side of the rotating mounting seat (91), and a limiting block (96) is symmetrically fixedly connected to the L-shaped rack (94). The limiting block (96) is slidably connected to the rectangular groove on the surface of the rotating mounting seat (91).

6. The device for detecting leakage of a vacuum pipeline according to claim 4, characterized in that: The lifting and rotating mechanism (10) comprises a lifting installation shell (101), a second electric push rod (102), a guide rod (103), a protective shell (104), a first motor (105), an annular groove (106) and a balancing rod (107); A lifting mounting shell (101) is provided below the rotating mechanism (9), a second electric push rod (102) is installed inside the lifting mounting shell (101), a movable end of the second electric push rod (102) is connected to the bottom end of the rotating mechanism (9), a guide rod (103) is symmetrically slidably connected on the lifting mounting shell (101), the top end of the guide rod (103) is connected to the rotating mechanism (9), a protective shell (104) is provided below the lifting mounting shell (101), a first motor (105) whose output end is fixedly connected to the lower surface of the lifting mounting shell (101) is installed inside the protective shell (104), an annular groove (106) is provided on the upper surface of the protective shell (104), a balancing rod (107) is symmetrically fixedly connected to the lower surface of the lifting mounting shell (101), and the balancing rod (107) is slidably connected to the annular groove (106).

7. The device for detecting leakage of a vacuum pipeline according to claim 4, characterized in that: The first moving mechanism (11) comprises a moving mounting shell (111), a first moving block (112), a first threaded rod (113) and a second motor (114); A movable mounting shell (111) is provided below the lifting and rotating mechanism (10), a first movable block (112) is slidably mounted inside the movable mounting shell (111), a top end of the first movable block (112) is connected to a bottom end of the lifting and rotating mechanism (10), a first threaded rod (113) is rotatably connected inside the movable mounting shell (111) and meshed with the first movable block (112), a second motor (114) is mounted on the movable mounting shell (111), and an output shaft of the second motor (114) is fixedly connected to one end of the first threaded rod (113).

8. The vacuum pipeline leakage detection device according to claim 4, characterized in that: The second moving mechanism (12) comprises a support seat (121), a second moving block (122), a second threaded rod (123) and a third motor (124); A support base (121) is provided below the first moving mechanism (11), a second moving block (122) is slidably mounted inside the support base (121), a top end of the second moving block (122) is connected to a bottom end of the first moving mechanism (11), a second threaded rod (123) is rotatably connected inside the support base (121) and is meshed with the second moving block (122), a third motor (124) is mounted on the support base (121), and an output shaft of the third motor (124) is fixedly connected to one end of the second threaded rod (123).

9. The device for detecting leakage of a vacuum pipeline according to claim 8, characterized in that: The second moving mechanism (12) further includes a guide groove (125) and a guide block (126); The upper surface of the support seat (121) is symmetrically provided with guide grooves (125), the interior of the guide groove (125) is slidably connected with a guide block (126), and the top end of the guide block (126) is connected to the bottom end of the first moving mechanism (11).

10. A vacuum pipeline leakage detection method, applicable to the vacuum pipeline leakage detection device according to any one of claims 1 to 9, characterized in that: include: A1, first connect the top end of the connecting tube (3) with the lower surface of the air duct body (1), then connect the bottom end of the connecting tube (3) with the upper surface of the vacuum duct body (2), open the first connecting valve (4), and the positive pressure air inside the air duct body (1) enters the inside of the vacuum duct body (2) through the connecting tube (3). The positive pressure air will escape through the leak point of the vacuum duct body (2), and the vacuum duct body (2) will be tested for leaks; A2, the positive pressure air inside the air duct body (1) enters the interior of the cartridge electric heater (5) and is heated. The heated air enters the interior of the vacuum duct body (2) through the connecting pipe (3). The heated positive pressure air is discharged from the leak point of the vacuum duct body (2), heating the air around the leak point. The infrared temperature detector (6) scans the surface of the vacuum duct body (2), detects the area with increased air temperature, and accurately locates the leak point of the vacuum duct body (2); A3, when positive pressure air is transported inside the air duct body (1), the second connecting valve (7) can adjust the flow rate. After the heated positive pressure air enters the interior of the vacuum duct body (2), the pressure inside the vacuum duct body (2) changes. The pressure regulating valve (8) adjusts the pressure inside the vacuum duct body (2) to ensure that the pressure inside the vacuum duct body (2) is balanced. A4, the first electric push rod (95) on the surface of the rotating mounting seat (91) is started, the moving end of the first electric push rod (95) is extended and retracted, driving the L-shaped rack (94) to move up and down, the L-shaped rack (94) contacts the flat gear at one end of the rotating rod (92), driving the rotating rod (92) to rotate, and the connecting piece (93) rotates with the rotating rod (92), facilitating the adjustment of the detection angle of the infrared temperature detector (6), when the L-shaped rack (94) moves up and down, the limit block (96) slides along the rectangular inner wall of one side of the rotating mounting seat (91), ensuring that the L-shaped rack (94) moves stably; A5, the second electric push rod (102) inside the lifting installation shell (101) is started, the moving end of the second electric push rod (102) is extended and retracted, driving the rotating mechanism (9) to move up and down, thereby driving the infrared temperature detector (6) to move up and down, and adjusting the height of the infrared temperature detector (6). When the rotating mechanism (9) moves up and down, the guide rod (103) slides along the surface of the lifting installation shell (101), and the first motor (105) inside the protective shell (104) is started. The output shaft of the first motor (105) drives the lifting installation shell (101) to rotate, thereby conveniently controlling the rotation of the infrared temperature detector (6). When the lifting installation shell (101) rotates, the balance rod (107) slides inside the annular groove (106), ensuring that the lifting installation shell (101) rotates stably; A6, the second motor (114) on the movable mounting shell (111) is started, the output shaft of the second motor (114) drives the first threaded rod (113) to rotate inside the movable mounting shell (111), the rotation direction of the output shaft of the second motor (114) is adjusted, and the first movable block (112) is controlled to move forward and backward, thereby driving the rotating mechanism (9) and the lifting and rotating mechanism (10) to move forward and backward, and further driving the infrared temperature detector (6) to move forward and backward; A7, the third motor (124) on the support base (121) is started, and the output shaft of the third motor (124) drives the second threaded rod (123) to rotate inside the support base (121). The rotation direction of the output shaft of the third motor (124) is adjusted to control the second moving block (122) to move left and right, thereby driving the first moving mechanism (11) to move left and right, and further driving the infrared temperature detector (6) to move left and right. When the first moving mechanism (11) moves left and right, the guide block (126) slides inside the guide groove (125) to guide the first moving mechanism (11).

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