Pipeline leakproofness detection device for constructional engineering construction detection

Abstract

The invention relates to the field of pipeline detection, in particular to a pipeline leakproofness detection device for constructional engineering construction detection, which comprises a base, a detection cylinder is mounted above the base, a first plugging piece is movably connected in the detection cylinder, and the first plugging piece seals the end part of a to-be-detected pipeline and clamps and fixes the pipeline. The pipeline is driven to move; a first plugging piece is installed at one end of the pipeline, a second plugging piece is installed at the other end of the pipeline, an air hole is formed in the second plugging piece, and air is injected into the pipeline after the two ends of the pipeline are plugged through the first plugging piece and the second plugging piece; the transmission assembly comprises a horizontally-arranged transmission rod, the transmission rod is driven by a motor, a second gear is arranged on the transmission rod in a sliding mode, through the structure of the detection marking assembly, when the pipeline passes through the lower portion of the detection marking assembly, the position of the leakproofness defect on the surface of the pipeline is detected and marked, and therefore follow-up repair of the pipeline is facilitated; and the whole pipeline is prevented from being discarded to cause waste.

Description

Technical Field

[0001] The present invention relates to the field of pipeline detection, in particular to a pipeline tightness detection device for construction engineering construction detection. Background Art

[0002] PVC pipe refers to rigid polyvinyl chloride pipe. It is made by hot-pressing polyvinyl chloride resin with stabilizers and lubricants. It is the earliest plastic pipe material developed and applied. PVC pipes are divided into soft PVC pipes and rigid PVC pipes, and are often used in ventilation ducts in construction.

[0003] In the prior art, before a pipe is used as a ventilation duct, it is necessary to perform a tightness test. The tightness of the pipe is tested by sealing the pipe, injecting gas into the pipe, and monitoring the pressure in the pipe.

[0004] However, this detection method can only detect the overall tightness of the pipeline, and cannot find the specific location of the pipeline's tightness defects. In special construction operations, longer PVC pipes are often used. If the entire pipe is scrapped, it will cause great waste. Summary of the Invention

[0005] The purpose of the present invention is to provide a pipeline tightness detection device for construction engineering inspection to solve the problems raised by the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A pipeline tightness detection device for construction engineering construction detection, comprising: A base, with a detection cylinder installed above the base, and a first blocking member movably connected to the detection cylinder, the first blocking member seals the end of the pipeline to be tested and clamps and fixes the pipeline, driving the pipeline to move; The first blocking member drives the pipeline to rotate and move in the detection cylinder, and seals one end of the pipeline.

[0007] A second blocking member is installed at the other end of the pipeline. The second blocking member is provided with an air hole. After the first blocking member and the second blocking member block both ends of the pipeline, air is injected into the pipeline. The second sealing member seals the other side of the pipeline to form a closed space inside the pipeline, and then injects gas into the pipeline to prevent the gas inside the pipeline from escaping automatically.

[0008] A transmission assembly, the transmission assembly comprising a horizontally arranged transmission rod, the transmission rod being driven by a motor, a second gear being slidably arranged on the transmission rod, the second gear being engaged in a tooth groove on the first blocking member, and the second gear being meshed with a tooth block on the tooth groove for transmission; The transmission assembly drives the first blocking member to rotate, and under the action of the external thread and the thread groove, the first blocking member moves horizontally during the rotation process.

[0009] A detection mark assembly, the detection mark assembly comprising a first detection column abutting against the outer wall of the pipeline, wherein a second detection column for detecting gas leaks in the pipeline is disposed within the first detection column; The first detection column detects defects in the outer wall of the pipeline, and the second detection column detects defects in the air tightness of the pipeline.

[0010] A dye tank is provided in the detection mark component. After the second detection column detects the pipeline leakage point, the air pressure pushes the second detection column to move upward, so that the dye tank is connected with the inside of the first detection column, thereby marking the dye at the pipeline leakage point.

[0011] The dye tank cooperates with the structure of the second detection column to apply the dye to the air tightness defects of the pipeline.

[0012] Furthermore, the lower part of the detection cylinder is fixedly mounted on the base via a bracket, a connecting ring is fixedly connected to the inner wall of one end of the detection cylinder, a guide assembly is provided inside the connecting ring, a plurality of ball heads are installed on the outer wall of the guide assembly, a rotating groove is provided on the inner wall of the connecting ring, the ball head is inserted into the rotating groove, and the guide assembly is rotatably connected to the detection cylinder via the ball head.

[0013] The ball head reduces the rotation resistance of the guide assembly and enables the guide assembly to be rotatably installed in the detection cylinder.

[0014] Furthermore, the guide assembly includes a plurality of guide wheels arranged therein, the guide wheels are evenly distributed in the guide assembly, the guide wheels are rotatably installed in the movable frame, the outer side of the movable frame is fixedly connected to a first sliding column, and the inner wall of the guide assembly is fixedly connected to a plurality of first fixed columns, the first sliding column is slidably arranged in the first fixed column, a first spring is arranged in the first fixed column, and the two ends of the first spring are respectively fixedly connected to the first fixed column and the first sliding column.

[0015] The guide wheel cooperates with the elastic force of the first spring, so that it can fit the outer wall of various types of pipes, and position the part inside the pipe displacement guide assembly to the center of the detection cylinder, making it convenient to connect the pipe to the first sealing part, and support its non-connected end during the pipeline inspection process to avoid the pipe tilting and inability to effectively perform inspection.

[0016] Furthermore, the transmission rod is arranged in the bracket, and the part of the transmission rod located below the guide assembly is installed with a first gear. A gear ring is also fixed on the guide assembly, and the gear ring is arranged above the first gear. The gear ring is engaged with the first gear for transmission. A plurality of splines are provided on the outer surface of the transmission rod, and a spline groove is provided on the inner wall of the second gear. The second gear rotates coaxially with the transmission rod through the splines.

[0017] The first gear is driven to rotate by the spline, and the first gear is enabled to slide horizontally on the transmission rod. The first gear is engaged with the gear ring for transmission, so that when the first sealing member drives the pipeline to rotate, the guide assembly rotates synchronously with it, thereby avoiding the friction between the guide wheel and the pipeline from hindering the rotation of the pipeline and causing the pipeline to twist and deform.

[0018] Furthermore, an external thread is provided on the outer wall of the first blocking member, and a thread groove is provided on the inner wall of the detection cylinder, the external thread is threadedly connected to the thread groove, the first blocking member and the second blocking member are symmetrically distributed, and the first blocking member and the second blocking member are both provided with clamping rings for clamping the two ends of the pipeline, and sealing plates for sealing the openings on both sides of the pipeline, the first blocking member actively moves in the detection cylinder, and the second blocking member is only fixedly mounted on the pipeline.

[0019] The first sealing member and the second sealing member both seal both ends of the pipeline and are fixed on the pipeline. The first sealing member moves spirally in the detection tube and drives the pipeline to move spirally so as to detect the pipeline.

[0020] Furthermore, the first sealing member and the second sealing member are slidingly connected on the opposite sides thereof with symmetrically distributed clamping rings, the cross section of the clamping ring is set to a trapezoidal structure, an anti-slip pad is provided on the inner wall of the clamping ring, the outer side of the clamping ring is fixedly connected to a second sliding column, the second sliding column is provided in the second fixed column, the second fixed column is fixedly installed on the inner walls of the first sealing member and the second sealing member, and a second spring is also provided between the second fixed column and the second sliding column.

[0021] The inclined plate structure of the clamp ring facilitates the direct insertion of the pipe into the clamp ring, thereby improving the efficiency of fixing the pipe. Furthermore, the elastic force of the second spring enables the clamp ring to connect the first blocking member, the second blocking member and the pipe into a whole.

[0022] Furthermore, the blocking plate is arranged on the outside of the clamp ring, and the blocking plate is fixedly connected to the inner walls of the first blocking piece and the second blocking piece respectively. A plurality of blocking blocks are fixedly connected to the blocking plate, and a sealing gasket is provided on the side wall of each blocking block. The radius of the blocking block corresponds to the inner diameter of the pipe of different models, and the blocking blocks are distributed in a frustum on the blocking plate; The two sides of the pipeline are sealed by the structure of the sealing block and the sealing gasket, and multiple sealing blocks of different specifications enable the sealing plate to seal pipelines of different diameters.

[0023] There is only one air hole in the middle of the sealing plate in the second sealing member. The air hole on the sealing plate is used to inject gas into the inside of the pipeline through an external air pump to increase the gas pressure inside the pipeline, and the air hole can be closed.

[0024] Injecting gas into the confined space inside the pipeline increases the air pressure inside the pipeline. When there is an airtightness defect in the pipeline, the reaction will be more obvious.

[0025] Furthermore, the detection mark assembly is installed at the top of the detection cylinder, and a lifting plate is vertically slidably connected to the bottom of the detection mark assembly. A third spring is provided on both sides of the top of the lifting plate, and the two ends of the third spring are respectively fixedly connected to the lifting plate and the inner wall of the detection mark assembly. The first detection column is fixedly connected to the bottom of the lifting plate, and the interior of the first detection column is set as a cavity structure, and the cavity passes through the top of the first detection column and the middle of the lifting plate.

[0026] Furthermore, a notch is provided below the cavity of the first detection column, the second detection column slides vertically in the notch and the cavity, a sealing rubber ring is provided on the lower side wall of the second detection column, and the second detection column is sealed with the notch through the sealing rubber ring; Furthermore, a fixing ring is fixedly connected to the upper side wall of the second detection column, and a support ring is fixedly connected to the inner wall of the cavity of the first detection column. The support ring abuts against the bottom of the fixing ring, so that the lowest point of the sliding lower end of the second detection column is higher than the lowest point of the first detection column.

[0027] The first detection column detects defects on the outer surface of the pipeline, and the second detection column detects defects in the air tightness of the pipeline.

[0028] Furthermore, a feed port is provided above the dye tank, a material guide tube is slidably connected in the dye tank, the bottom of the material guide tube is fixed to the lifting plate, a sealing ring is fixedly connected to the bottom inner wall of the material guide tube, a discharge pipe is vertically slidably connected in the sealing ring, a sealing rubber ring is provided on the inner wall of the sealing ring, the discharge pipe is sealingly and slidably connected to the sealing ring, a plurality of through holes are provided on the side wall of the discharge pipe, a back plate is fixedly connected above the discharge pipe, the back plate abuts against the sealing ring, the upper end of the second detection column is fixedly connected to an insertion rod, the insertion rod passes through the discharge pipe and abuts against the bottom of the back plate.

[0029] The dye in the dye tank is used to mark the air tightness defects of the pipeline detected by the second detection column, so as to facilitate the subsequent repair of the pipeline; The material guide tube rises and falls along with the lifting plate, so as to prevent the distance between the bottom of the material guide tube and the insertion rod from changing in the initial state.

[0030] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses the structure of the detection marking component to detect the location of the airtightness defect on the surface of the pipeline when the pipeline passes under it, and marks the location to facilitate subsequent repair of the pipeline, avoiding the waste of the entire pipeline; 2. The first detection column structure, under the elastic force of the third spring, clings to the outer wall of the pipeline, enabling it to detect defects on the outer surface of the pipeline. Furthermore, the second detection column structure sliding inside the first detection column allows the second detection column to slide upward when the pipeline leaks, leaving a gap between the notch of the first detection column and the second detection column. This allows the dye in the cavity of the first detection column to flow downward, marking the location of the pipeline's airtightness defects for subsequent pipeline repair. 3. The two ends of the pipeline are sealed through the structure of the first sealing part and the second sealing part, and the two are stably fixed at both ends of the pipeline. After gas is injected into the pipeline, the internal air pressure of the pipeline is greater than the external standard air pressure. When a sealing defect occurs in the pipeline, the internal air pressure will be discharged outward along the defect. The outward air pressure at the defect can push the second detection column upward and cannot push up the first detection column, thereby avoiding the synchronous movement of the first and second detection columns, resulting in the inability to effectively detect pipeline sealing defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the guide assembly of the present invention; Figure 4 For the present invention Figure 3A in the middle is an enlarged structural diagram; Figure 5 It is a schematic diagram of the cross-sectional structure of the detection tube of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7 Schematic diagram of the cross-sectional structure of the first blocking member of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the middle; Figure 9 Schematic diagram of the cross-sectional structure of the detection mark assembly of the present invention; Figure 10 For the present invention Figure 9 The enlarged structural diagram at D in the middle; Figure 11 For the present invention Figure 10 Enlarged structural diagram at E in the middle.

[0032] In the figure: 1. Base; 2. Detection tube; 21. Bracket; 22. Threaded groove; 23. Connecting ring; 3. Guide assembly; 31. Ball head; 32. Guide wheel; 33. Movable frame; 34. First fixed column; 35. First sliding column; 36. First spring; 37. Gear ring; 4. First blocking member; 41. Second blocking member; 42. Clamping ring; 43. Anti-slip pad; 44. Second fixed column; 45. Second sliding column; 46. Second spring; 47. Blocking plate; 48. Blocking Block; 49, sealing gasket; 410, tooth groove; 411, external thread; 5, transmission assembly; 51, transmission rod; 52, spline; 53, first gear; 54, second gear; 6, detection mark assembly; 61, dye tank; 62, lifting plate; 63, third spring; 64, first detection column; 65, second detection column; 66, insertion rod; 67, fixing ring; 68, support ring; 69, guide tube; 610, sealing ring; 611, back plate; 612, discharge pipe. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0034] See also Figures 1 to 11 The present invention provides a technical solution: a pipeline tightness detection device for construction engineering construction inspection, comprising a base 1, a detection cylinder 2 is installed above the base 1, and a first blocking member 4 is movably connected to the detection cylinder 2. The first blocking member 4 seals the end of the pipeline to be tested and clamps the pipeline to be fixed, driving the pipeline to move; The first blocking member 4 drives the pipeline to rotate and move in the detection cylinder 2 and seals one end of the pipeline.

[0035] A second blocking member 41 is installed at the other end of the pipe. The second blocking member 41 is provided with air holes. After the first blocking member 4 and the second blocking member 41 block both ends of the pipe, air is injected into the pipe. The second blocking member 41 seals the other side of the pipeline to form a closed space inside the pipeline, and then injects gas into the pipeline to prevent the gas inside the pipeline from escaping automatically.

[0036] The transmission assembly 5 includes a horizontally arranged transmission rod 51, which is driven by a motor. A second gear 54 is slidably provided on the transmission rod 51. The second gear 54 is engaged in a tooth groove 410 on the first blocking member 4. The second gear 54 meshes with the tooth block on the tooth groove 410 for transmission. The transmission assembly 5 drives the first blocking member 4 to rotate, and under the action of the external thread 411 and the thread groove 22, the first blocking member 4 moves horizontally during the rotation process.

[0037] A detection mark assembly 6, comprising a first detection column 64 abutting against the outer wall of the pipeline, wherein a second detection column 65 for detecting a gas leak point in the pipeline is disposed within the first detection column 64; The first detection column 64 detects defects in the outer wall of the pipeline, and the second detection column 65 detects defects in the air tightness of the pipeline.

[0038] A dye tank 61 is provided in the detection mark component 6. After the second detection column 65 detects the pipeline leakage point, the air pressure pushes the second detection column 65 to move upward, so that the dye tank 61 is connected with the inside of the first detection column 64, thereby marking the dye at the pipeline leakage point.

[0039] The dye tank 61 cooperates with the structure of the second detection column 65 to apply the dye to the airtightness defects of the pipeline.

[0040] The lower part of the detection cylinder 2 is fixedly mounted on the base 1 via a bracket 21. A connecting ring 23 is fixedly connected to the inner wall of one end of the detection cylinder 2. A guide assembly 3 is provided inside the connecting ring 23. A plurality of ball heads 31 are installed on the outer wall of the guide assembly 3. A rotating groove is provided on the inner wall of the connecting ring 23. The ball heads 31 are inserted into the rotating groove. The guide assembly 3 is rotatably connected to the detection cylinder 2 via the ball heads 31.

[0041] The ball head 31 reduces the rotational resistance of the guide assembly 3 and enables the guide assembly 3 to be rotatably installed in the detection cylinder 2 .

[0042] The guide assembly 3 includes a plurality of guide wheels 32 arranged therein, and the guide wheels 32 are evenly distributed in the guide assembly 3. The guide wheels 32 are rotatably mounted in a movable frame 33. A first sliding column 35 is fixedly connected to the outer side of the movable frame 33. A plurality of first fixed columns 34 are fixedly connected to the inner wall of the guide assembly 3. The first sliding column 35 is slidably arranged in the first fixed column 34. A first spring 36 is arranged in the first fixed column 34. The two ends of the first spring 36 are respectively fixedly connected to the first fixed column 34 and the first sliding column 35.

[0043] The guide wheel 32 cooperates with the elastic force of the first spring 36 to fit the outer wall of various types of pipes, and positions the part inside the pipe displacement guide assembly 3 to the center of the detection cylinder 2, making it convenient to connect the pipe to the first sealing member 4, and to support the non-connected end of the pipe during the pipeline detection process, so as to avoid the pipe tilting and inability to effectively perform the detection.

[0044] The transmission rod 51 is arranged in the bracket 21. The part of the transmission rod 51 located below the guide assembly 3 is installed with a first gear 53. A gear ring 37 is also fixed on the guide assembly 3. The gear ring 37 is arranged above the first gear 53. The gear ring 37 is engaged with the first gear 53 for transmission. A plurality of splines 52 are provided on the outer surface of the transmission rod 51, and a spline groove is provided on the inner wall of the second gear 54. The second gear 54 rotates coaxially with the transmission rod 51 through the spline 52.

[0045] The first gear 53 is driven to rotate by the spline 52, and the first gear 53 is enabled to slide horizontally on the transmission rod 51. The first gear 53 is engaged with the gear ring 37 for transmission, so that when the first sealing member 4 drives the pipeline to rotate, the guide assembly 3 rotates synchronously with it, thereby preventing the friction between the guide wheel 32 and the pipeline from hindering the rotation of the pipeline and causing the pipeline to twist and deform.

[0046] An external thread 411 is provided on the outer wall of the first blocking member 4, and a thread groove 22 is provided on the inner wall of the detection tube 2. The external thread 411 is threadedly connected to the thread groove 22. The first blocking member 4 and the second blocking member 41 are symmetrically distributed. The first blocking member 4 and the second blocking member 41 are both provided with a clamping ring 42 for clamping the two ends of the pipeline, and a sealing plate 47 for sealing the openings on both sides of the pipeline. The first blocking member 4 actively moves in the detection tube 2, and the second blocking member 41 is only fixedly installed on the pipeline.

[0047] The first blocking member 4 and the second blocking member 41 both seal both ends of the pipeline and are fixed on the pipeline. The first blocking member 4 moves spirally in the detection tube 2 and drives the pipeline to move spirally so as to detect the pipeline.

[0048] The first sealing member 4 and the second sealing member 41 are slidably connected to each other on one side with the symmetrically distributed clamping ring 42. The cross section of the clamping ring 42 is set to a trapezoidal structure. The inner wall of the clamping ring 42 is provided with an anti-slip pad 43. The outer side of the clamping ring 42 is fixedly connected to a second sliding column 45. The second sliding column 45 is set in a second fixed column 44. The second fixed column 44 is fixedly installed on the inner walls of the first sealing member 4 and the second sealing member 41. A second spring 46 is also provided between the second fixed column 44 and the second sliding column 45.

[0049] The inclined plate structure of the clamp ring 42 facilitates the direct insertion of the pipe into the clamp ring 42, thereby improving the efficiency of fixing the pipe. Furthermore, the elastic force of the second spring 46 enables the clamp ring 42 to connect the first blocking member 4, the second blocking member 41 and the pipe into a whole.

[0050] The blocking plate 47 is arranged on the outside of the clamp ring 42. The blocking plate 47 is fixedly connected to the inner walls of the first blocking member 4 and the second blocking member 41 respectively. A plurality of blocking blocks 48 are fixedly connected to the blocking plate 47. A sealing gasket 49 is provided on the side wall of each blocking block 48. The radius of the blocking block 48 corresponds to the inner diameter of different types of pipes. The blocking blocks 48 are distributed in a frustum on the blocking plate 47. The two sides of the pipeline are blocked by the structure of the blocking block 48 and the sealing gasket 49, and the blocking blocks 48 of different specifications are arranged so that the blocking plate 47 can block pipelines of different diameters.

[0051] There is only one air hole in the middle of the sealing plate 47 in the second sealing member 41. The air hole on the sealing plate 47 is used to inject gas into the pipeline through an external air pump to increase the gas pressure inside the pipeline, and the air hole can be closed.

[0052] Injecting gas into the confined space inside the pipeline increases the air pressure inside the pipeline. When there is an airtightness defect in the pipeline, the reaction will be more obvious.

[0053] The detection mark assembly 6 is installed at the top inside the detection cylinder 2, and a lifting plate 62 is vertically slidably connected to the bottom of the detection mark assembly 6. Third springs 63 are provided on both sides above the lifting plate 62. The two ends of the third spring 63 are respectively fixedly connected to the lifting plate 62 and the inner wall of the detection mark assembly 6. The first detection column 64 is fixedly connected to the bottom of the lifting plate 62. The interior of the first detection column 64 is set as a cavity structure, and the cavity passes through the top of the first detection column 64 and the middle of the lifting plate 62.

[0054] A notch is provided below the cavity of the first detection column 64, and the second detection column 65 slides vertically in the notch and the cavity. A sealing rubber ring is provided on the lower side wall of the second detection column 65, and the second detection column 65 is sealed with the notch through the sealing rubber ring; A fixing ring 67 is fixedly connected to the upper side wall of the second detection column 65, and a support ring 68 is fixedly connected to the inner wall of the cavity of the first detection column 64. The support ring 68 abuts against the bottom of the fixing ring 67, so that the lowest point of the sliding lower end of the second detection column 65 is higher than the lowest point of the first detection column 64.

[0055] The first detection column 64 detects defects on the outer surface of the pipeline, and the second detection column 65 detects defects in the airtightness of the pipeline.

[0056] A feed port is provided above the dye tank 61, and a guide tube 69 is slidably connected inside the dye tank 61. The bottom of the guide tube 69 is fixed to the lifting plate 62, and a sealing ring 610 is fixedly connected to the bottom inner wall of the guide tube 69. A discharge tube 612 is vertically slidably connected inside the sealing ring 610. A sealing rubber ring is provided on the inner wall of the sealing ring 610. The discharge tube 612 is sealingly and slidably connected to the sealing ring 610. A number of through holes are provided on the side wall of the discharge tube 612. A support plate 611 is fixedly connected above the discharge tube 612, and the support plate 611 abuts against the sealing ring 610. The upper end of the second detection column 65 is fixedly connected to an insertion rod 66, and the insertion rod 66 passes through the discharge tube 612 and abuts against the bottom of the abutment plate 611.

[0057] The dye in the dye tank 61 is used to mark the pipeline air tightness defects detected by the second detection column 65 so as to facilitate the subsequent repair of the pipeline; The material guide tube 69 rises and falls along with the rise and fall of the lifting plate 62 , so as to prevent the distance between the bottom of the material guide tube 69 and the insertion rod 66 from changing in the initial state.

[0058] The specific plan is: The motor controls the transmission rod 51 to rotate in the opposite direction, so that the spline 52 of the transmission rod 51 drives the first gear 53 to rotate in the opposite direction. Since the first gear 53 is meshed with the tooth groove 410 for transmission, the rotation of the first gear 53 drives the first blocking member 4 to rotate in the opposite direction. Under the threaded connection between the external thread 411 and the thread groove 22, the first blocking member 4 moves in the direction of the guide assembly 3 until it moves to the farthest distance in this direction. Moreover, since the first gear 53 is stuck in the tooth groove 410, the horizontal movement of the first blocking member 4 drives the first gear 53 to move along the transmission rod 51 along with the first blocking member 4, ensuring that the rotation of the transmission rod 51 can control the first blocking member 4 to move to the maximum distance on the side where the pipe is inserted. Insert the pipe into the detection cylinder 2 along the middle of the guide assembly 3, and insert the pipe into the inner side of the guide wheel 32. Under the elastic force of the first spring 36, the guide wheels 32 are pressed against the outer wall of the pipe, so that the pipe is kept centered during the insertion of the pipe into the detection cylinder 2, so that the pipe can be directly inserted into the clamping ring 42 of the first blocking member 4. At the same time, when the pipe is long and the clamping ring 42 of the first blocking member 4 drives the pipe to move, the end of the pipe where the second blocking member 41 is installed is prevented from sagging due to its own weight, thereby preventing the detection mark assembly 6 from effectively detecting the entering pipe. During the process of inserting the pipe end into the first blocking member 4, the pipe can be manually selected to keep rotating while entering the detection cylinder 2, that is, the detection mark assembly 6 can detect the end of the pipe; When the pipe is inserted into the clamp ring 42, the end of the pipe first contacts the bevel of the clamp ring 42. As the pipe continues to move, the bevel pushes the clamp ring 42 to both sides, so that the pipe enters the clamp ring 42 and the end of the pipe is pressed against the blocking plate 47. Depending on the type of pipe, different blocking blocks 48 will be inserted, so that the blocking blocks 48 can seal and fix the two ends of the pipe through the structure of the sealing gasket 49. A second sealing member 41 is installed at the other end of the pipe. At this time, both ends of the pipe are sealed, that is, the pipe is a closed space. Air is injected into the closed space of the pipe through the air holes of the sealing plate 47 on the second sealing member 41, and then the air holes are locked, so that the air pressure in the pipe is greater than the external standard air pressure. If there is a sealing defect on the pipe surface, the internal air pressure will be discharged outward from the defect, forming an outward airflow. During the process of pipeline selection and movement, the elastic force of the third spring 63 causes the first detection post 64 to be in close contact with the outer wall of the pipeline. If the pipeline is dented or bulged, the first detection post 64 will be displaced. The location of the pipeline surface defect can be recorded by an additional sensor. Moreover, since the bottom height of the second detection post 65 is higher than the lowest point height of the first detection post 64, changes in the pipeline surface will not cause the second detection post 65 to be activated. When a leak occurs in the pipeline, the first detection post 64 is in close contact with the outer wall of the pipeline and is subject to the elastic force of the third spring 63, so that the airflow cannot push the first detection post 64 to move. However, it can push the second detection post 65 to move upward. That is, the second detection post 65 slides upward inside the first detection post 64, so that the sealing rubber ring of the second detection post 65 is removed from the connection between it and the notch. At this time, the dye can adhere to the location of the pipeline airtightness defect through the notch to mark it. As the second detection column 65 slides upward, the insertion rod 66 is inserted into the middle of the discharge pipe 612, and the support plate 611 is pushed upward, so that the through hole of the discharge pipe 612 moves to above the sealing ring 610, that is, the dye in the guide tube 69 can pass through the discharge pipe 612 into the cavity in the middle of the first detection column 64 for storage, and the dye in the cavity that marks the pipeline surface is consistent with the amount of dye entering the cavity, so that the detection marking component 6 can detect and mark airtight defects on the pipeline surface for a long time.

[0059] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipeline tightness detection device for construction engineering, characterized in that: include: A base (1), a detection cylinder (2) is installed above the base (1), a first blocking member (4) is movably connected inside the detection cylinder (2), and the first blocking member (4) seals the end of the pipeline to be tested and clamps and fixes the pipeline, driving the pipeline to move; A second blocking member (41) is installed at the other end of the pipeline. An air hole is provided on the second blocking member (41). After the first blocking member (4) and the second blocking member (41) block both ends of the pipeline, air is injected into the pipeline. A transmission assembly (5), the transmission assembly (5) comprising a horizontally arranged transmission rod (51), the transmission rod (51) being driven by a motor, a second gear (54) being slidably arranged on the transmission rod (51), the second gear (54) being engaged in a tooth groove (410) on the first blocking member (4), and the second gear (54) being meshed with a tooth block on the tooth groove (410) for transmission; A detection mark assembly (6), the detection mark assembly (6) comprising a first detection column (64) abutting against the outer wall of the pipeline, a second detection column (65) for detecting a gas leak point in the pipeline being arranged in the first detection column (64); A dye tank (61) is provided in the detection mark assembly (6). After the second detection column (65) detects a leak in the pipeline, air pressure pushes the second detection column (65) upward, causing the dye tank (61) to communicate with the interior of the first detection column (64), thereby marking the location of the leak in the pipeline with the dye.

2. The pipeline tightness detection device for construction engineering according to claim 1 is characterized in that: The lower part of the detection cylinder (2) is fixedly mounted on the base (1) via a bracket (21); a connecting ring (23) is fixedly connected to the inner wall of one end of the detection cylinder (2); a guide assembly (3) is provided in the connecting ring (23); a plurality of ball heads (31) are installed on the outer wall of the guide assembly (3); a rotating groove is provided on the inner wall of the connecting ring (23); the ball heads (31) are engaged in the rotating groove, and the guide assembly (3) is rotatably connected to the detection cylinder (2) via the ball heads (31).

3. The pipeline tightness detection device for construction engineering according to claim 2 is characterized in that: The guide assembly (3) includes a plurality of guide wheels (32) arranged therein, the guide wheels (32) being evenly distributed within the guide assembly (3), the guide wheels (32) being rotatably mounted within a movable frame (33), a first sliding column (35) being fixedly connected to the outer side of the movable frame (33), a plurality of first fixed columns (34) being fixedly connected to the inner wall of the guide assembly (3), the first sliding column (35) being slidably arranged within the first fixed column (34), a first spring (36) being arranged within the first fixed column (34), and two ends of the first spring (36) being fixedly connected to the first fixed column (34) and the first sliding column (35), respectively.

4. The pipeline tightness detection device for construction engineering according to claim 3 is characterized in that: The transmission rod (51) is arranged in the bracket (21), and a first gear (53) is installed on the portion of the transmission rod (51) located below the guide assembly (3). A gear ring (37) is also fixed on the guide assembly (3), and the gear ring (37) is arranged above the first gear (53). The gear ring (37) and the first gear (53) are meshed and transmitted. A plurality of splines (52) are provided on the outer surface of the transmission rod (51), and a spline groove is provided on the inner wall of the second gear (54). The second gear (54) rotates coaxially with the transmission rod (51) through the splines (52).

5. The pipeline tightness detection device for construction engineering according to claim 1 is characterized in that: An external thread (411) is provided on the outer wall of the first blocking member (4), and a thread groove (22) is provided on the inner wall of the detection tube (2). The external thread (411) is threadedly connected to the thread groove (22). The first blocking member (4) and the second blocking member (41) are symmetrically distributed. Both the first blocking member (4) and the second blocking member (41) are provided with clamping rings (42) for clamping both ends of the pipeline, and sealing plates (47) for sealing the openings on both sides of the pipeline. The first blocking member (4) actively moves in the detection tube (2), and the second blocking member (41) is only fixedly mounted on the pipeline.

6. The pipeline tightness detection device for construction engineering according to claim 5, characterized in that: The first blocking member (4) and the second blocking member (41) are slidably connected to the symmetrically distributed clamping ring (42) on the side facing each other. The cross section of the clamping ring (42) is set to a trapezoidal structure. An anti-slip pad (43) is set on the inner wall of the clamping ring (42). The outer side of the clamping ring (42) is fixedly connected to a second sliding column (45). The second sliding column (45) is set in the second fixed column (44). The second fixed column (44) is fixedly installed on the inner wall of the first blocking member (4) and the second blocking member (41). A second spring (46) is also set between the second fixed column (44) and the second sliding column (45).

7. The pipeline tightness detection device for construction engineering according to claim 6, characterized in that: The blocking plate (47) is arranged on the outside of the clamp ring (42), and the blocking plate (47) is fixedly connected to the inner walls of the first blocking member (4) and the second blocking member (41), respectively. A plurality of blocking blocks (48) are fixedly connected to the blocking plate (47), and a sealing gasket (49) is provided on the side wall of each blocking block (48). The radius of the blocking block (48) corresponds to the inner diameter of different types of pipes, and the blocking blocks (48) are distributed in a frustum on the blocking plate (47); An air hole is provided in the middle of the sealing plate (47) in the second sealing member (41), and only the air hole on the sealing plate (47) is used to inject gas into the interior of the pipeline through an external air pump to increase the gas pressure inside the pipeline, and the air hole can be closed.

8. The pipeline tightness detection device for construction engineering according to claim 1 is characterized in that: The detection mark assembly (6) is installed in the upper part of the detection cylinder (2), and a lifting plate (62) is vertically slidably connected to the lower part of the detection mark assembly (6). A third spring (63) is provided on both sides above the lifting plate (62), and the two ends of the third spring (63) are fixedly connected to the lifting plate (62) and the inner wall of the detection mark assembly (6), respectively. The lower part of the lifting plate (62) is fixedly connected to the first detection column (64), and the interior of the first detection column (64) is set as a cavity structure, and the cavity passes through the upper part of the first detection column (64) and the middle part of the lifting plate (62).

9. The pipeline tightness detection device for construction engineering according to claim 8, characterized in that: A notch is provided below the cavity of the first detection column (64), and the second detection column (65) slides vertically in the notch and the cavity. A sealing rubber ring is provided on the lower side wall of the second detection column (65), and the second detection column (65) is sealed and connected to the notch via the sealing rubber ring. A fixing ring (67) is fixedly connected to the upper side wall of the second detection column (65), and a support ring (68) is fixedly connected to the inner wall of the cavity of the first detection column (64). The support ring (68) abuts against the bottom of the fixing ring (67), so that the lowest point of the sliding lower end of the second detection column (65) is higher than the lowest point of the first detection column (64).

10. The pipeline tightness detection device for construction engineering according to claim 9, characterized in that: A feed port is provided above the dye tank (61), a guide tube (69) is slidably connected to the inside of the dye tank (61), the bottom of the guide tube (69) is fixed to the lifting plate (62), a sealing ring (610) is fixedly connected to the inner wall of the bottom of the guide tube (69), a discharge tube (612) is vertically slidably connected to the inside of the sealing ring (610), a sealing rubber ring is provided on the inner wall of the sealing ring (610), and the discharge tube (612) is fixedly connected to the bottom of the guide tube (69). 2) It is sealingly and slidingly connected to the sealing ring (610), a plurality of through holes are provided on the side wall of the discharge pipe (612), a butt plate (611) is fixedly connected to the top of the discharge pipe (612), and the butt plate (611) abuts against the sealing ring (610), and an insert rod (66) is fixedly connected to the upper end of the second detection column (65), and the insert rod (66) passes through the discharge pipe (612) and abuts against the bottom of the butt plate (611).

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