Connecting pipe sealing measurement equipment for pressure-bearing special equipment and use method

Abstract

The invention discloses connecting pipe sealing measurement equipment for pressure-bearing special equipment and a use method, and relates to the technical field of pressure-bearing special equipment detection. An outer sealing air bag is installed on the inner wall of an annular supporting cover, an expansion sealing assembly is used for being tightly attached to the inner wall of a pressure-bearing connecting pipe to form a sealing testing cavity, an air leakage monitoring assembly is arranged on one side of one annular supporting cover, and the sealing testing cavity is communicated with the air leakage monitoring assembly through a monitoring air pipe. Leakage point monitoring air bags in one-to-one correspondence with the leakage point monitoring assemblies are mounted on the outer surface of the rubber monitoring belt on the inner side of the monitoring ring cover. When the leakage point monitoring air bag gradually expands, the leakage point monitoring air bag pushes the arc-shaped stress plate to gradually approach to the inner wall of the monitoring ring cover after being in contact with the arc-shaped stress plate, and when the control system receives a pressure signal from a second pressure sensor, it is indicated that an air leakage point exists in a welding seam at the position where the leakage point monitoring air bag is located; therefore, accurate detection of the welding seam of the pressure-bearing connecting pipe can be realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of pressure-bearing special equipment detection, and in particular relates to a pipe sealing measuring device for pressure-bearing special equipment and a use method thereof. Background Art

[0002] During the production process of pressure-bearing special equipment (such as boilers, pressure vessels, and pressure pipes), relevant components need to be subjected to water pressure tests. Since the large welds of pressure-bearing special equipment require strict requirements and are carefully inspected, problems rarely occur with the large welds of pressure-bearing special equipment. However, the butt welds of small-diameter pipes such as sampling pipes and discharge pipes are prone to air leakage during the actual production process. Before the water pressure test of the entire equipment, a local tightness test is performed on the small-diameter pipes. After the local tightness is verified to be qualified, the water pressure test of the entire equipment is performed, which can avoid a large amount of material and labor waste.

[0003] In the prior art, most pipe weld sealing measurement devices, when in use, seal both sides of the pipe weld to keep the weld in a closed space, and then determine whether the pipe weld has a leakage quality problem by supplying air into the closed space. This detection method can only detect whether the pipe weld is leaking, and it cannot accurately detect the specific leakage point of the pipe weld. It often requires adding a secondary detection process, which reduces the detection efficiency of the pipe weld to a certain extent. Summary of the Invention

[0004] The purpose of the present invention is to provide a pipe sealing measurement device and a method of use for pressure-bearing special equipment. Through the specific structural design of the sealing control mechanism, the outer cover mechanism, the leakage point monitoring mechanism and the monitoring power mechanism, the problem that the existing pipe welding seam sealing measurement equipment can only detect whether the pipe welding seam is leaking, and it cannot accurately detect the specific leakage point of the pipe welding seam is solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a pipe sealing measuring device for pressure-bearing special equipment, including a sealing control mechanism, the sealing control mechanism includes two symmetrically arranged annular support covers, an outer sealing airbag is installed on the inner wall of the annular support cover, an expansion sealing component coaxial with the inner side of the annular support cover is provided, the expansion sealing component is used to form a sealing test cavity tightly against the inner wall of the pressure-bearing pipe, one side of the annular support cover is provided with a leakage monitoring component; an outer cover mechanism, the outer cover mechanism is sleeved and installed on the outside of the two annular support covers, the leakage monitoring component includes an elastically resettable air pressure trigger part, the sealing test cavity and the leakage The air monitoring components are connected through a monitoring air pipe; a leakage monitoring mechanism, which is rotatably mounted on the outer cover mechanism, and the leakage monitoring mechanism includes a monitoring ring cover, and two leakage monitoring components are symmetrically mounted on the side surfaces of the monitoring ring cover, and the leakage monitoring component includes an elastically resettable extrusion trigger, and a rubber monitoring belt is provided on the inner side of the monitoring ring cover, and the pressure-bearing pipe is passed through the inner side of the rubber monitoring belt; a monitoring power mechanism, which is sleeved on the outside of the leakage monitoring mechanism and the two are connected by fasteners, and the synchronous rotation of the leakage monitoring mechanism is achieved by the rotation of the monitoring power mechanism, and the outer surface of the rubber monitoring belt is mounted with leakage monitoring airbags corresponding to the leakage monitoring components.

[0006] In this embodiment of the present invention, the measurement and sealing control mechanism also includes a measurement and sealing control frame, two supporting frames are symmetrically installed on the top of the measurement and sealing control frame, the annular support cover is fixedly connected to the corresponding supporting frames, two arc-shaped supporting seats are symmetrically installed on the top of the measurement and sealing control frame, the arc-shaped supporting seats are used to support the pressure-bearing pipe, the supporting frame is arranged between the two arc-shaped supporting seats, and a monitoring power shaft is rotatably arranged between the supporting frames, the monitoring power shaft is connected to the output end of the monitoring power motor on one of the supporting frames, and a power gear is fixedly installed on the peripheral side of the monitoring power shaft.

[0007] In this embodiment of the present invention, the air leakage monitoring assembly also includes a hollow monitoring tube fixedly connected to the corresponding supporting frame, the air pressure triggering part is slidably arranged inside the hollow monitoring tube, and a first elastic member connected to the air pressure triggering part is arranged inside the hollow monitoring tube, and a first pressure sensor is installed on the inner wall of the hollow monitoring tube away from the first elastic member; the leakage point monitoring assembly also includes a radial mounting frame fixedly arranged on the outer wall of the monitoring ring cover, a second pressure sensor is installed on the inner wall of the radial mounting frame, and a second elastic member located on the inner side of the radial mounting frame is fixed on the outer wall of the monitoring ring cover, and the extrusion triggering member includes a radial moving rod that is sealed and slidably matched with the monitoring ring cover, an arc-shaped force-bearing plate fixed to the radial moving rod is provided on the inner side of the monitoring ring cover, and a pressure triggering plate fixed to the radial moving rod is provided on the inner side of the radial mounting frame.

[0008] In this embodiment of the present invention, the expansion sealing assembly includes a hollow sealing portion, an annular mounting cavity is opened on the peripheral side of the hollow sealing portion, an inner sealing airbag is fixedly installed inside the annular mounting cavity, the annular mounting cavity is connected to the inner cavity of the hollow sealing portion through a number of air supply holes, a first air supply pipe connected to the outer sealing airbag is installed on the peripheral side of the annular support cover, a second air supply pipe connected to its inner cavity is installed on one side of the hollow sealing portion, a third air supply pipe connected to the sealing test cavity is provided on one side of the second air supply pipe, the hollow sealing portion is installed on the corresponding third air supply pipe, and solenoid valves are installed on both the second air supply pipe and the third air supply pipe.

[0009] In this embodiment of the present invention, an air supply device is installed on the measurement and sealing control frame, and both air outlet ends of the air supply device are connected to the first air guide pipe, the second air guide pipe is sealed and slidingly fitted inside the first air guide pipe, and a hollow air guide part is provided on the top of the second air guide pipe. The second air supply pipe and the third air supply pipe are both connected to the corresponding hollow air guide parts, and a limiting guide rod is connected to the vertical support plate fixed at the bottom of the hollow air guide part, and a limiting guide tube that slides with the limiting guide rod is fixed on the measurement and sealing control frame.

[0010] In this embodiment of the present invention, the outer cover mechanism includes two symmetrically arranged outer cover bodies, which are mounted on the outside of the corresponding annular support cover. A monitoring air pipe is connected to the top of one of the outer cover bodies, and one end of the monitoring air pipe extends to the inside of the hollow monitoring cylinder. An annular closed cavity coaxial with the outer cover body is opened on one side, and annular closed plates are fixed on opposite sides of the monitoring ring cover, and the annular closed plates are rotatably fitted inside the corresponding annular closed cavity.

[0011] In this embodiment of the present invention, a first mounting cover is fixedly provided on the top of the monitoring ring cover, and a second mounting cover is fixedly provided on the bottom of the monitoring ring cover. The first mounting cover and the second mounting cover are both connected to the inner cavity of the monitoring ring cover through a first arc-shaped opening. A first movable plate is slidingly provided inside the first mounting cover, and a second movable plate is slidingly provided inside the second mounting cover. A third elastic member connected to the second movable plate is installed at the bottom of the second mounting cover; a tensioning roller is installed at the bottom of the first movable plate, and the second movable plate is connected to the rubber monitoring belt through a linkage. The rubber monitoring belt is sleeved on the tensioning roller, and the inner wall of the rubber monitoring belt is provided with a second arc-shaped opening connected to the corresponding leakage point monitoring airbag.

[0012] In this embodiment of the present invention, the monitoring power mechanism includes a first fixed seat and a second fixed seat arranged opposite to each other, the first fixed seat is sleeved on the outside of the first mounting cover and is connected by fasteners, the second fixed seat is sleeved on the outside of the second mounting cover and is connected by fasteners, an outer gear ring seat is installed between the first fixed seat and the second fixed seat by fasteners, the outer gear ring seat is meshed with the power gear, and a tensioning cylinder connected to the first movable plate is installed on the top of the first fixed seat.

[0013] The present invention has the following beneficial effects: 1. When the control system of the present invention does not receive the pressure signal from the first pressure sensor, it indicates that there is no leakage defect in the pressure-bearing pipe welding seam. When the leakage monitoring airbag gradually expands, the gradually enlarged leakage monitoring airbag contacts the arc-shaped force-bearing plate and pushes the arc-shaped force-bearing plate gradually close to the inner wall of the monitoring ring cover, and gradually approaches the pressure trigger plate of the second pressure sensor to stretch the second elastic part. When the control system receives the pressure signal from the second pressure sensor, it indicates that there is a leakage point in the welding seam where the leakage monitoring airbag at this position is located, thereby achieving accurate detection of the pressure-bearing pipe welding seam.

[0014] 2. The present invention controls the monitoring power mechanism and the leakage monitoring mechanism to rotate a certain angle, and again controls the rubber monitoring belt to be tightly attached to the side of the pressure-bearing pipe weld, and sends a certain amount of air into the sealing test chamber through the third air supply pipe. If the control system does not receive the pressure signal of the second pressure sensor at the corresponding positions of the two second arc-shaped openings, it means that there is no leakage defect in the parts of the pressure-bearing pipe weld corresponding to the two second arc-shaped openings. If the control system only receives the pressure signal of the second pressure sensor at the corresponding position of one of the second arc-shaped openings, it means that there is a leakage defect in the pressure-bearing pipe weld at that position. At this time, the leakage point mark is made on the pressure-bearing pipe (the leakage point mark corresponds to the leakage part on the pressure-bearing pipe weld), so that a comprehensive and accurate airtightness detection of the pressure-bearing pipe weld can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 This is a working status diagram of the pipe sealing measuring device used for pressure-bearing special equipment in the present invention.

[0017] Figure 2 This is a structural schematic diagram of the pipe sealing measuring device used for pressure-bearing special equipment in the present invention.

[0018] Figure 3 It is a structural schematic diagram of the measuring and sealing control mechanism in the present invention.

[0019] Figure 4 for Figure 3 top view of the structure.

[0020] Figure 5 for Figure 2 Schematic diagram of part of the structure.

[0021] Figure 6 This is a partial structural diagram of the measurement and sealing control mechanism in the present invention.

[0022] Figure 7 for Figure 6 Structural cross-sectional view.

[0023] Figure 8 for Figure 7 side view of the structure.

[0024] Figure 9 for Figure 8 A magnified view of the local structure at point A.

[0025] Figure 10 It is a structural schematic diagram of the outer cover mechanism in the present invention.

[0026] Figure 11 It is a structural diagram of the leakage point monitoring mechanism in the present invention.

[0027] Figure 12 for Figure 11 The structural front view.

[0028] Figure 13 It is a structural diagram of the monitoring power mechanism in the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 1-testing and sealing control mechanism, 101-annular support cover, 102-external sealing airbag, 103-air pressure triggering part, 104-testing and sealing control frame, 105-carrying frame, 106-arc-shaped bearing seat, 107-monitoring power shaft, 108-monitoring power motor, 109-power gear, 110-hollow monitoring cylinder, 111-first elastic member, 112-hollow sealing part, 113-annular mounting cavity, 114-inner sealing airbag, 115-air delivery hole, 116-first air supply pipe, 117-second air supply pipe, 118-third air supply pipe, 119-solenoid valve, 120-air supply equipment, 121-first air guide pipe, 122-second air guide pipe, 123-hollow air guide part, 124-vertical support plate, 125-limiting guide rod, 126-limiting conduit, 2-outer cover mechanism, 201-outer cover, 202-monitoring air pipe, 203-annular closed cavity, 3-leakage monitoring mechanism, 301-monitoring ring cover, 302-rubber monitoring belt, 303-leakage monitoring airbag, 304-radial mounting frame, 305-second elastic member, 306-radial moving rod, 307-arc-shaped force plate, 308-pressure trigger plate, 309-annular closed plate, 310-first mounting cover, 311-second mounting cover, 312-first arc-shaped opening, 313-first moving plate, 314-second moving plate, 315-third elastic member, 316-tensioning roller, 317-linkage, 318-second arc-shaped opening, 4-monitoring power mechanism, 401-first fixed seat, 402-second fixed seat, 403-external gear ring seat, 404-tensioning cylinder, 5-pressure-bearing pipe. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] For specific embodiment 1, please refer to Figure 1-13The present invention is a pipe sealing measuring device for pressure-bearing special equipment, comprising a sealing control mechanism 1, an outer cover mechanism 2, a leakage monitoring mechanism 3 and a monitoring power mechanism 4; the sealing control mechanism 1 comprises two symmetrically arranged annular support covers 101, an outer sealing airbag 102 is installed on the inner wall of the annular support cover 101, an expansion sealing component coaxial with the annular support cover 101 is provided on the inner side of the annular support cover 101, the expansion sealing component is used to form a sealing test cavity tightly against the inner wall of the pressure-bearing pipe 5, and a leakage monitoring component is provided on one side of one annular support cover 101; the outer cover mechanism 2 is sleeved and installed on the outside of the two annular support covers 101, and the leakage monitoring component includes an elastically resettable air pressure trigger part 103, and the sealing test cavity and the leakage The air monitoring components are connected through the monitoring air pipe 202; the leakage monitoring mechanism 3 is rotatably installed on the outer cover mechanism 2, the leakage monitoring mechanism 3 includes a monitoring ring cover 301, and two leakage monitoring components are symmetrically installed on the side surface of the monitoring ring cover 301. The leakage monitoring component includes an elastically resettable extrusion trigger component, and a rubber monitoring belt 302 is provided on the inner side of the monitoring ring cover 301, and the pressure-bearing pipe 5 is passed through the inner side of the rubber monitoring belt 302; the monitoring power mechanism 4 is sleeved on the outside of the leakage monitoring mechanism 3 and the two are connected by fasteners. The synchronous rotation of the leakage monitoring mechanism 3 is achieved by the rotation of the monitoring power mechanism 4, and the outer surface of the rubber monitoring belt 302 is installed with a leakage monitoring airbag 303 corresponding to the leakage monitoring component.

[0033] In this embodiment of the invention, Figure 3 and Figure 4 As shown, the sealing control mechanism 1 also includes a sealing control frame 104, two supporting frames 105 are symmetrically installed on the top of the sealing control frame 104, the annular support cover 101 is fixedly connected to the corresponding supporting frames 105, and two arc-shaped supporting seats 106 are symmetrically installed on the top of the sealing control frame 104 (the arc-shaped supporting seats 106 are detachably installed on the sealing control frame 104, and the specific diameter of the pressure-bearing pipe 5 can be replaced), the arc-shaped supporting seats 106 are used to support the pressure-bearing pipe 5, the supporting frames 105 are arranged between the two arc-shaped supporting seats 106, and a monitoring power shaft 107 is rotatably arranged between the supporting frames 105, the monitoring power shaft 107 is connected to the output end of the monitoring power motor 108 on one of the supporting frames 105, and a power gear 109 is fixedly installed on the side surface of the monitoring power shaft 107. The rotation of the entire monitoring power mechanism 4 and the leakage point monitoring mechanism 3 is controlled by the monitoring power motor 108 and the power gear 109.

[0034] Furthermore, the air leakage monitoring assembly also includes a hollow monitoring tube 110 fixedly connected to the corresponding supporting frame 105, and the air pressure triggering part 103 is slidably arranged inside the hollow monitoring tube 110. A first elastic member 111 connected to the air pressure triggering part 103 is arranged inside the hollow monitoring tube 110, and a first pressure sensor is installed on the inner wall of the hollow monitoring tube 110 away from the first elastic member 111. When the air pressure in the inner cavity of the hollow monitoring tube 110 increases, the air pressure triggering part 103 moves and stretches the first elastic member 111. When the control system receives a pressure signal from the first pressure sensor, the air pressure triggering part 103 presses against the first pressure sensor, indicating that there is an air leakage defect in the welding seam of the pressure-bearing pipe 5 at this time. When the control system does not receive a pressure signal from the first pressure sensor, it indicates that there is no air leakage defect in the welding seam of the pressure-bearing pipe 5 at this time, thereby realizing the airtightness detection of the welding seam of the pressure-bearing pipe 5.

[0035] In this embodiment of the invention, Figure 11 and Figure 12 As shown, the leakage monitoring assembly also includes a radial mounting bracket 304 fixedly arranged on the outer wall of the monitoring ring cover 301, a second pressure sensor is installed on the inner wall of the radial mounting bracket 304, a second elastic member 305 located on the inner side of the radial mounting bracket 304 is fixed on the outer wall of the monitoring ring cover 301, and the extrusion trigger member includes a radial moving rod 306 that is tightly slidably matched with the monitoring ring cover 301, an arc-shaped force-bearing plate 307 fixed to the radial moving rod 306 is provided on the inner side of the monitoring ring cover 301 (the arc-shaped force-bearing plate 307 is coaxial with the monitoring ring cover 301), and a pressure trigger plate 308 fixed to the radial moving rod 306 is provided on the inner side of the radial mounting bracket 304. When the leakage monitoring airbag 303 gradually develops When it expands, the gradually enlarged leakage monitoring airbag 303 contacts the arc-shaped force-bearing plate 307 and pushes the arc-shaped force-bearing plate 307 gradually close to the inner wall of the monitoring ring cover 301, and gradually approaches the pressure trigger plate 308 of the second pressure sensor to stretch the second elastic member 305. When the control system receives the pressure signal from the second pressure sensor, it indicates that there is a leak in the weld seam where the leakage monitoring airbag 303 is located. In this way, accurate detection of the weld seam of the pressure-bearing pipe 5 can be achieved. Of course, when the control system does not receive the pressure signal from the first pressure sensor, it indicates that there is no leakage defect in the weld seam of the pressure-bearing pipe 5, and there is no need to detect it through the leakage monitoring component.

[0036] In this embodiment of the invention, Figure 7 、 Figure 8 and Figure 9As shown, the expansion sealing assembly includes a hollow sealing portion 112, an annular mounting cavity 113 is provided on the side surface of the hollow sealing portion 112, an inner sealing airbag 114 is fixedly installed inside the annular mounting cavity 113, the annular mounting cavity 113 and the inner cavity of the hollow sealing portion 112 are connected through a plurality of air delivery holes 115, and a first air supply pipe 116 connected to the outer sealing airbag 102 is installed on the side surface of the annular support cover 101, and air is transported to the inside of each outer sealing airbag 102 through the first air supply pipe 116 to expand it, and the expanded outer sealing airbag 102 is tightly attached to the outer wall of the pressure-bearing pipe 5, and the welding seam of the pressure-bearing pipe 5 is between the two expanded outer sealing airbags 102, and the expanded inner sealing airbag 114 is tightly attached to the inner wall of the pressure-bearing pipe 5, and the sealing test cavity is between the two expanded inner sealing airbags 114, and a second air supply pipe 116 connected to its inner cavity is installed on one side of the hollow sealing portion 112. 17. A third air supply pipe 118 connected to the sealing test cavity is provided on one side of the second air supply pipe 117. The hollow sealing part 112 is installed on the corresponding third air supply pipe 118. Solenoid valves 119 are installed on both the second air supply pipe 117 and the third air supply pipe 118. When the solenoid valve 119 on the second air supply pipe 117 is opened, air can be transported into the inner cavity of each hollow sealing part 112 through the second air supply pipe 117. The air in the inner cavity of the hollow sealing part 112 enters the annular mounting cavity 113 along each air delivery hole 115, thereby causing the inner sealing airbag 114 to gradually expand. When the inner sealing airbag 114 is tightly attached to the inner wall of the pressure-bearing pipe 5, the solenoid valve 119 on the second air supply pipe 117 is controlled to be closed. When the solenoid valve 119 on the third air supply pipe 118 is opened, air can be transported into the sealing test cavity through the third air supply pipe 118 to start air tightness testing.

[0037] Specific embodiment 2, based on specific embodiment 1, as Figure 3As shown, an air supply device 120 is installed on the measuring and sealing control frame 104, and both air outlet ends of the air supply device 120 are connected to a first air guide pipe 121 (it should be noted that an air diversion pipe is provided between each first air supply pipe 116 and the corresponding first air guide pipe 121, and an electromagnetic valve 119 is installed on the air diversion pipe. The air diversion pipe and the electromagnetic valve 119 thereon are not shown in the figure). The first air guide pipe 121 is sealed and slidably matched with a second air guide pipe 122. The top of the second air guide pipe 122 is connected to a hollow air guide portion 123. The second air supply pipe 117 and the third air supply pipe 118 are both connected to the corresponding hollow guide pipes. The air portion 123 is connected, and a limiting guide rod 125 is connected to a vertical support plate 124 fixed at the bottom of the hollow air guide portion 123. A limiting guide tube 126 that slides with the limiting guide rod 125 is fixed on the measurement and sealing control frame 104. Through the sliding guiding action of the limiting guide rod 125 and the limiting guide tube 126, as well as the sliding guiding action of the first air guide tube 121 and the second air guide tube 122, the limiting guidance of the hollow air guide portion 123 during horizontal movement is realized, so that the hollow air guide portion 123, the second air supply tube 117, the third air supply tube 118 and the hollow sealing portion 112 will not deflect during the synchronous horizontal movement.

[0038] In this embodiment of the invention, Figure 10 and Figure 11 As shown, the outer cover mechanism 2 includes two symmetrically arranged outer covers 201, and the outer covers 201 are sleeved and installed on the outside of the corresponding annular support cover 101 (the outer cover 201 is detachably installed on the outside of the annular support cover 101, for example, the outer cover 201 and the carrier 105 can be connected together by fasteners), and a monitoring air pipe 202 is connected to the top of one of the outer covers 201, and one end of the monitoring air pipe 202 extends to the inside of the hollow monitoring cylinder 110, so that the air in the sealed test chamber can be passed through the monitoring tube 110. The trachea 202 enters the hollow monitoring tube 110, and an annular sealed cavity 203 coaxial with the outer cover 201 is opened on one side. Annular sealed plates 309 are fixed on opposite sides of the monitoring ring cover 301, and the annular sealed plates 309 are rotatably fitted inside the corresponding annular sealed cavity 203. In this way, the monitoring ring cover 301 and the annular support covers 101 on both sides thereof can form an outer sleeve, the sealed test cavity is arranged inside the outer sleeve, and the outer sealing airbag 102 is also arranged inside the outer sleeve and located on both sides of the sealed test cavity.

[0039] In this embodiment of the invention, Figure 11 and Figure 12As shown, a first mounting cover 310 is fixedly provided on the top of the monitoring ring cover 301, and a second mounting cover 311 is fixedly provided on the bottom of the monitoring ring cover 301. The first mounting cover 310 and the second mounting cover 311 are both connected to the inner cavity of the monitoring ring cover 301 through a first arc-shaped opening 312. A first movable plate 313 is slidingly provided inside the first mounting cover 310, and a second movable plate 314 is slidingly provided inside the second mounting cover 311. A third elastic member 315 connected to the second movable plate 314 is installed at the bottom of the second mounting cover 311.

[0040] A tensioning roller 316 is installed at the bottom of the first movable plate 313, and the second movable plate 314 is connected to the rubber monitoring belt 302 through a linkage 317. When the tensioning roller 316 is driven by the first movable plate 313 to move away from the axial direction of the monitoring ring cover 301, the rubber monitoring belt 302 is pulled tightly against the outer wall of the pressure-bearing pipe 5 under the action of the tensioning roller 316. The deformation of the rubber monitoring belt 302 tightly against the pressure-bearing pipe 5 can increase the tightness of the contact surface between the rubber monitoring belt 302 and the pressure-bearing pipe 5. In this process, the linkage 317 that moves synchronously with the rubber monitoring belt 302 The second movable plate 314 is driven to move toward the axial direction of the monitoring ring cover 301 and stretch the third elastic member 315. The rubber monitoring belt 302 is sleeved on the tensioning roller 316. The inner wall of the rubber monitoring belt 302 is provided with a second arc-shaped opening 318 which is connected to the corresponding leakage point monitoring airbag 303. Through this structural design, when a leak occurs at the position of the pressure-bearing pipe 5 corresponding to the second arc-shaped opening 318, the leakage point monitoring airbag 303 at this position can be inflated (in this process, part of the rubber monitoring belt 302 is tightly attached to the outer wall of the pressure-bearing pipe 5. At this time, the state of the rubber monitoring belt 302 is as shown in FIG. Figure 12 shown).

[0041] In this embodiment of the invention, Figure 5 and Figure 13As shown, the monitoring power mechanism 4 includes a first fixed seat 401 and a second fixed seat 402 arranged opposite to each other. The first fixed seat 401 is sleeved on the outside of the first mounting cover 310 and is connected by fasteners. The second fixed seat 402 is sleeved on the outside of the second mounting cover 311 and is connected by fasteners. An outer gear ring seat 403 is installed between the first fixed seat 401 and the second fixed seat 402 through fasteners. The outer gear ring seat 403 is meshed with the power gear 109. A tensioning cylinder 404 connected to the first movable plate 313 is installed on the top of the first fixed seat 401. The movement of the first movable plate 313 inside the first mounting cover 310 is controlled by the tensioning cylinder 404. When the power gear 109 drives the outer gear ring seat 403 to rotate, the entire monitoring power mechanism 4 can be driven to rotate synchronously. In this embodiment, the rotation angle of the monitoring power mechanism 4 each time is the coverage angle of the leakage point monitoring airbag 303 on the outer wall of the pressure-bearing pipe 5 (that is, the angle when the leakage point monitoring airbag 303 is close to the outer wall of the pressure-bearing pipe 5).

[0042] After removing the corresponding structures of the hollow air guide part 123, the second air supply pipe 117, the third air supply pipe 118, the hollow sealing part 112 and the limiting guide rod 125 on one side of the measuring and sealing control mechanism 1 (which can be defined as a movable component), the pressure-bearing pipe 5 formed by welding the two pipes is placed inside the two arc-shaped bearing seats 106, and the pressure-bearing pipe 5 is supported by the arc-shaped bearing seats 106 on both sides. Then the removed movable component is reinstalled on the measuring and sealing control mechanism 1. At this time, the two hollow sealing parts 112 are both located on the inner side of the pressure-bearing pipe 5, and the welding seam is between the two hollow sealing parts 112. The two outer sealing air bags 102 are both located on the outside of the pressure-bearing pipe 5, and the welding seam is also between the two outer sealing air bags 102. Then open the solenoid valve 119 on the air diversion pipe, and transport air to the outside through the air supply equipment 120, the air diversion pipe and the first air supply pipe 116. The sealing airbag 102 is inflated so that the outer sealing airbags 102 on both sides of the welding seam are inflated and tightly attached to the outer wall of the pressure-bearing pipe 5. Then, the solenoid valve 119 on the air diversion pipe is controlled to be closed and the solenoid valve 119 on the second air supply pipe 117 is opened. The air is transported to the inner cavity of the hollow sealing part 112 through the air supply equipment 120, the first air guide pipe 121, the second air guide pipe 122, the hollow air guide part 123 and the second air supply pipe 117. The air in the inner cavity of the hollow sealing part 112 enters the annular mounting cavity 113 along each air delivery hole 115, thereby gradually inflating the inner sealing airbag 114, so that the inner sealing airbag 114 is inflated and tightly attached to the inner wall of the pressure-bearing pipe 5. Then, the solenoid valve 119 on the second air supply pipe 117 is controlled to be closed. In this way, a sealed test cavity is formed inside the pressure-bearing pipe 5 and the air tightness test of the pressure-bearing pipe 5 can be started.

[0043] Then, the solenoid valves 119 on each third air supply pipe 118 are controlled to open, and a certain amount of air is delivered to the sealed test chamber through the air supply equipment 120, the first air guide pipe 121, the second air guide pipe 122, the hollow air guide part 123 and the third air supply pipe 118. If the control system receives a pressure signal from the first pressure sensor, the solenoid valve 119 on the third air supply pipe 118 is controlled to close, indicating that there is an air leakage defect in the weld seam of the pressure-bearing pipe 5 at this time. If the control system does not receive a pressure value from the first pressure sensor, it indicates that there is no air leakage defect in the weld seam of the pressure-bearing pipe 5.

[0044] When the control system receives the pressure signal from the first pressure sensor, it indicates that there is a leakage defect in the welding seam of the pressure-bearing pipe 5. The control system controls to start the tensioning cylinder 404 and drives the first movable plate 313 to move through the tensioning cylinder 404. The first movable plate 313 drives the tensioning roller 316 to move in the direction away from the axis of the monitoring ring cover 301. Under the action of the tensioning roller 316, the rubber monitoring belt 302 is pulled tightly against the outer wall of the pressure-bearing pipe 5. The deformation of the rubber monitoring belt 302 tightly against the pressure-bearing pipe 5 can increase the rubber pressure. The tightness of the contact surface between the rubber monitoring belt 302 and the pressure-bearing pipe 5. During this process, the linkage part 317 that moves synchronously with the rubber monitoring belt 302 drives the second movable plate 314 to move toward the axial direction of the monitoring ring cover 301 and stretches the third elastic part 315. When the first movable plate 313 is driven to the set position by the tensioning cylinder 404, the rubber monitoring belt 302 is tightly attached to the side of the welding seam of the pressure-bearing pipe 5, and the first arc-shaped opening 312 at the position of each leakage point monitoring airbag 303 is aligned with a certain part of the welding seam of the pressure-bearing pipe 5.

[0045] In the initial state, the first mounting cover 310 is arranged upward, and the rubber monitoring belt 302 is separated from the pressure-bearing pipe 5. When the rubber monitoring belt 302 is controlled to be tightly attached to the side of the weld seam of the pressure-bearing pipe 5, a certain amount of air is again supplied to the sealing test chamber through the third air supply pipe 118. If the control system does not receive the pressure signal of the second pressure sensor at the corresponding positions of the two second arc-shaped openings 318, it means that there is no air leakage defect in the parts of the weld seam of the pressure-bearing pipe 5 corresponding to the two second arc-shaped openings 318. If the control system only receives the pressure signal of the second pressure sensor at the corresponding position of one of the second arc-shaped openings 318, it means that there is an air leakage defect in the weld seam of the pressure-bearing pipe 5 at that position. At this time, a leakage point mark can be made on the pressure-bearing pipe 5 (the leakage point mark corresponds to the leakage part on the weld seam of the pressure-bearing pipe 5).

[0046] Subsequently, the first movable plate 313 is driven by the tensioning cylinder 404 to move in the opposite direction and reset, so that the rubber monitoring belt 302 is separated from the pressure-bearing pipe 5 again. When the monitoring power mechanism 4 and the leakage monitoring mechanism 3 are controlled to rotate a certain angle by the monitoring power motor 108 and the power gear 109, the first movable plate 313 is driven by the tensioning cylinder 404 to move to the set position again so that the rubber monitoring belt 302 is tightly attached to the side of the welding seam of the pressure-bearing pipe 5. A certain amount of air is again introduced into the sealing test chamber through the third air supply pipe 118. If the control system does not receive the pressure signal of the second pressure sensor at the corresponding position of the two second arc-shaped openings 318, it means that the welding seam of the pressure-bearing pipe 5 corresponds to the two second arc-shaped openings 3 18 does not have leakage defects. If the control system only receives the pressure signal of the second pressure sensor at the position corresponding to one of the second arc-shaped openings 318, it means that there is a leakage defect in the welding seam of the pressure-bearing pipe 5 at that position. At this time, the leakage point mark is made on the pressure-bearing pipe 5 again (the leakage point mark corresponds to the leakage position on the welding seam of the pressure-bearing pipe 5). In this way, a comprehensive and accurate air tightness test of the welding seam of the pressure-bearing pipe 5 can be achieved according to the same control method as above. After completing the air tightness test of the welding seam of the pressure-bearing pipe 5, the monitoring power mechanism 4 and the leakage point monitoring mechanism 3 are controlled to return to the initial state. The pressure-bearing pipe 5 after the test is removed and a new pressure-bearing pipe 5 is placed to perform the air tightness test again.

[0047] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pipe sealing measuring device for pressure-bearing special equipment, characterized in that: include: A sealing control mechanism (1), the sealing control mechanism (1) comprising two symmetrically arranged annular support covers (101), an outer sealing airbag (102) being mounted on the inner wall of the annular support cover (101), an expansion sealing assembly coaxial with the inner side of the annular support cover (101), the expansion sealing assembly being used to cling to the inner wall of the pressure-bearing pipe (5) to form a sealing test cavity, and a gas leakage monitoring assembly being disposed on one side of one of the annular support covers (101); An outer cover mechanism (2), the outer cover mechanism (2) being sleeved and mounted on the outside of two annular support covers (101); the air leakage monitoring component comprising an elastically resettable air pressure triggering portion (103); and the sealed test cavity and the air leakage monitoring component being communicated with via a monitoring air pipe (202); A leakage monitoring mechanism (3) is rotatably mounted on the outer cover mechanism (2), the leakage monitoring mechanism (3) comprises a monitoring ring cover (301), two leakage monitoring components are symmetrically mounted on the circumferential side of the monitoring ring cover (301), the leakage monitoring components comprise elastically resettable extrusion triggering members, a rubber monitoring belt (302) is provided on the inner side of the monitoring ring cover (301), and the pressure-bearing pipe (5) is passed through the inner side of the rubber monitoring belt (302); A monitoring power mechanism (4) is sleeved on the outside of the leakage monitoring mechanism (3) and the two are connected by fasteners. The synchronous rotation of the leakage monitoring mechanism (3) is achieved by the rotation of the monitoring power mechanism (4). The outer surface of the rubber monitoring belt (302) is equipped with leakage monitoring airbags (303) corresponding to the leakage monitoring components.

2. The pipe sealing measuring device for pressure-bearing special equipment according to claim 1 is characterized in that: The measuring and sealing control mechanism (1) further comprises a measuring and sealing control frame (104), two bearing frames (105) are symmetrically mounted on the top of the measuring and sealing control frame (104), the annular support cover (101) is fixedly connected to the corresponding bearing frames (105), two arc-shaped bearing seats (106) are symmetrically mounted on the top of the measuring and sealing control frame (104), the arc-shaped bearing seats (106) are used to support the pressure-bearing pipe (5), the bearing frame (105) is arranged between the two arc-shaped bearing seats (106), a monitoring power shaft (107) is rotatably mounted between the bearing frames (105), the monitoring power shaft (107) is connected to the output end of a monitoring power motor (108) on one of the bearing frames (105), and a power gear (109) is fixedly mounted on the circumferential side of the monitoring power shaft (107).

3. The pipe sealing measuring device for pressure-bearing special equipment according to claim 2, characterized in that: The air leakage monitoring assembly further comprises a hollow monitoring cylinder (110) fixedly connected to the corresponding carrier (105); the air pressure triggering portion (103) is slidably arranged inside the hollow monitoring cylinder (110); a first elastic member (111) connected to the air pressure triggering portion (103) is arranged inside the hollow monitoring cylinder (110); and a first pressure sensor is installed on the inner wall of the hollow monitoring cylinder (110) away from the first elastic member (111); The leakage point monitoring assembly further comprises a radial mounting frame (304) fixedly arranged on the outer wall of the monitoring ring cover (301), a second pressure sensor is mounted on the inner wall of the radial mounting frame (304), a second elastic member (305) located on the inner side of the radial mounting frame (304) is fixed on the outer wall of the monitoring ring cover (301), the extrusion triggering member comprises a radial moving rod (306) in airtight sliding engagement with the monitoring ring cover (301), an arc-shaped force-bearing plate (307) fixed to the radial moving rod (306) is provided on the inner side of the monitoring ring cover (301), and a pressure triggering plate (308) fixed to the radial moving rod (306) is provided on the inner side of the radial mounting frame (304).

4. The pipe sealing measuring device for pressure-bearing special equipment according to claim 3 is characterized in that: The expansion sealing assembly includes a hollow sealing portion (112), a circular mounting cavity (113) is provided on the peripheral side of the hollow sealing portion (112), an inner sealing airbag (114) is fixedly installed inside the circular mounting cavity (113), the circular mounting cavity (113) and the inner cavity of the hollow sealing portion (112) are connected through a plurality of air delivery holes (115), a first air supply pipe (116) connected to the outer sealing airbag (102) is installed on the peripheral side of the annular support cover (101), a second air supply pipe (117) connected to the inner cavity of the hollow sealing portion (112) is installed on one side, a third air supply pipe (118) connected to the sealing test cavity is provided on one side of the second air supply pipe (117), and the hollow sealing portion (112) is installed on the corresponding third air supply pipe (118), and both the second air supply pipe (117) and the third air supply pipe (118) are installed with electromagnetic valves (119).

5. The pipe sealing measuring device for pressure-bearing special equipment according to claim 4, characterized in that: An air supply device (120) is installed on the measuring and sealing control frame (104). Both air outlet ends of the air supply device (120) are connected to a first air guide pipe (121). A second air guide pipe (122) is slidably fitted inside the first air guide pipe (121). A hollow air guide portion (123) is provided at the top of the second air guide pipe (122). The second air supply pipe (117) and the third air supply pipe (118) are both connected to the corresponding hollow air guide portion (123). A limiting guide rod (125) is connected to a vertical support plate (124) fixed at the bottom of the hollow air guide portion (123). A limiting guide pipe (126) slidably fitted with the limiting guide rod (125) is fixed to the measuring and sealing control frame (104).

6. The pipe sealing measuring device for pressure-bearing special equipment according to claim 5, characterized in that: The outer cover mechanism (2) comprises two symmetrically arranged outer cover bodies (201), the outer cover bodies (201) being sleeved and mounted on the outside of the corresponding annular support cover (101), a monitoring air pipe (202) being connected to the top of one of the outer cover bodies (201), one end of the monitoring air pipe (202) extending into the interior of the hollow monitoring cylinder (110), an annular sealed cavity (203) coaxial with the outer cover body (201) being provided on one side, annular sealed plates (309) being fixed on opposite sides of the monitoring ring cover (301), the annular sealed plates (309) being rotatably fitted into the interior of the corresponding annular sealed cavity (203).

7. The pipe sealing measuring device for pressure-bearing special equipment according to claim 6, characterized in that: A first mounting cover (310) is fixedly provided on the top of the monitoring ring cover (301), and a second mounting cover (311) is fixedly provided on the bottom of the monitoring ring cover (301); the first mounting cover (310) and the second mounting cover (311) are both communicated with the inner cavity of the monitoring ring cover (301) through a first arc-shaped opening (312); a first movable plate (313) is slidably provided inside the first mounting cover (310), and a second movable plate (314) is slidably provided inside the second mounting cover (311); a third elastic member (315) connected to the second movable plate (314) is installed on the bottom of the second mounting cover (311); A tensioning roller (316) is installed at the bottom of the first movable plate (313), and the second movable plate (314) is connected to the rubber monitoring belt (302) via a linkage (317). The rubber monitoring belt (302) is sleeved on the tensioning roller (316), and the inner wall of the rubber monitoring belt (302) is provided with a second arc-shaped opening (318) that is connected to the corresponding leakage point monitoring airbag (303).

8. The pipe sealing measuring device for pressure-bearing special equipment according to claim 7, characterized in that: The monitoring power mechanism (4) comprises a first fixed seat (401) and a second fixed seat (402) arranged opposite to each other, wherein the first fixed seat (401) is sleeved on the outside of the first mounting cover (310) and connected via fasteners, and the second fixed seat (402) is sleeved on the outside of the second mounting cover (311) and connected via fasteners, an outer gear ring seat (403) is installed between the first fixed seat (401) and the second fixed seat (402) via fasteners, and the outer gear ring seat (403) is meshed with the power gear (109), and a tensioning cylinder (404) connected to the first movable plate (313) is installed on the top of the first fixed seat (401).

9. The method for using the pipe sealing measuring device for pressure-bearing special equipment according to claim 8, characterized in that: The steps include: S01, by inflating the outer sealing airbag (102) and the inner sealing airbag (114), so that the outer sealing airbag (102) is closely attached to the outer wall of the pressure-bearing pipe (5), and the inner sealing airbag (114) is closely attached to the inner wall of the pressure-bearing pipe (5), a certain amount of air is delivered to the sealed test cavity between the two inner sealing airbags (114), if the control system receives a pressure signal from the first pressure sensor, it indicates that the weld seam of the pressure-bearing pipe (5) has an air leakage defect at this time, and if the control system does not receive a pressure value from the first pressure sensor, it indicates that the weld seam of the pressure-bearing pipe (5) does not have an air leakage defect; S02. When the control system receives a pressure signal from the first pressure sensor, it indicates that there is a gas leakage defect in the weld seam of the pressure-bearing pipe (5). Subsequently, the rubber monitoring belt (302) is controlled to be closely attached to the side of the weld seam of the pressure-bearing pipe (5), and the first arc-shaped opening (312) at the position of each leakage point monitoring airbag (303) is aligned with a certain part of the weld seam of the pressure-bearing pipe (5); S03. A certain amount of air is introduced into the sealing test chamber through the third air supply pipe (118). If the control system does not receive the pressure signal of the second pressure sensor at the positions corresponding to the two second arc-shaped openings (318), it indicates that there is no air leakage defect in the weld seam of the pressure-bearing pipe (5) corresponding to the two second arc-shaped openings (318). If the control system only receives the pressure signal of the second pressure sensor at the position corresponding to one of the second arc-shaped openings (318), it indicates that there is an air leakage defect in the weld seam of the pressure-bearing pipe (5) at that position. In this case, a mark of the air leakage point is made on the pressure-bearing pipe (5); S04, controlling the monitoring power mechanism (4) and the leakage monitoring mechanism (3) to rotate at a certain angle by means of the monitoring power motor (108) and the power gear (109), and again controlling the rubber monitoring belt (302) to be in close contact with the side of the weld seam of the pressure-bearing pipe (5), so that the first arc-shaped opening (312) at the position of each leakage monitoring airbag (303) is aligned with other parts of the weld seam of the pressure-bearing pipe (5); S05. A certain amount of air is again introduced into the sealing test chamber through the third air supply pipe (118). If the control system does not receive the pressure signal of the second pressure sensor at the positions corresponding to the two second arc-shaped openings (318), it indicates that there is no air leakage defect in the weld seam of the pressure-bearing pipe (5) corresponding to the two second arc-shaped openings (318). If the control system only receives the pressure signal of the second pressure sensor at the position corresponding to one of the second arc-shaped openings (318), it indicates that there is an air leakage defect in the weld seam of the pressure-bearing pipe (5) at that position. In this case, the air leakage point is marked again on the pressure-bearing pipe (5); S06. Circulate steps S04 to S05 to complete a comprehensive and accurate airtightness test of the weld seam of the pressure-bearing pipe (5).

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