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CN-119803811-B - Natural gas pipeline tightness safety detection device

CN119803811BCN 119803811 BCN119803811 BCN 119803811BCN-119803811-B

Abstract

The invention relates to a safety detection device for tightness of a natural gas pipeline, which comprises a detector, a sealing belt, a pressing block and a stretching assembly, wherein the sealing belt is used for wrapping the pipeline, the belt surfaces at the two ends of the sealing belt are mutually abutted, the pressing block is communicated with a pressing hole, an air groove is formed in the middle end belt surface of the sealing belt, the two ends of the sealing belt simultaneously penetrate through the pressing hole, the stretching assembly is simultaneously and detachably connected with the two ends of the sealing belt, the pressing block and the stretching assembly are simultaneously connected with a force application assembly, the force application assembly is used for driving the pressing block and the stretching assembly to be mutually far away, and the detector is arranged on the sealing belt and is communicated with the air groove. The invention can solve the technical problem that the existing detection device can not detect the connection tightness of pipelines with different pipe diameters.

Inventors

  • YANG KANGLI
  • ZHANG XIAWEI
  • SONG LIQIANG

Assignees

  • 四川宇泰安全科技有限责任公司

Dates

Publication Date
20260508
Application Date
20250103

Claims (6)

  1. 1. The natural gas pipeline tightness safety detection device comprises a detector (2), and is characterized by further comprising a sealing belt (3), a pressing block (4) and a stretching assembly (5), wherein the sealing belt (3) is used for wrapping a pipeline (1), the belt surfaces at the two ends of the sealing belt are mutually abutted, the pressing block (4) is communicated with a pressing hole (411), the belt surface at the middle end of the sealing belt (3) is provided with an air groove (31), the two ends of the sealing belt simultaneously penetrate through the pressing hole (411), the stretching assembly (5) is simultaneously and detachably connected with the two ends of the sealing belt (3), the pressing block (4) and the stretching assembly (5) are simultaneously connected with a force application assembly (6), the force application assembly (6) is used for driving the pressing block (4) and the stretching assembly (5) to be mutually far away, the detector (2) is arranged on the sealing belt (3) and is communicated with the air groove (31), the pressing block (41) comprises a pressing plate (41) and two elastic sealing blocks (42) with two ends which are respectively and detachably connected with the two ends of the pressing plate (41), the elastic sealing blocks (42) are simultaneously and respectively and tightly sealed by the two sealing blocks (42) at the two ends of the pressing plate (41), the pressure hole (411) is formed in the pressure plate (41) in a penetrating mode, the thickness of the two ends of the sealing belt (3) is gradually increased from the end portion to the middle portion, the width of the sealing belt (3) is equal to the opening length of the pressure hole (411), the sum of the thicknesses of the two ends of the sealing belt (3) is not smaller than the opening width of the pressure hole (411), the stretching assembly (5) comprises a pulling plate (51) and at least one clamping plate (52) fixedly connected to the pulling plate (51), the pulling plate (51) is connected to the force application assembly (6), the clamping plate (52) is clamped and detachably connected to the two ends of the sealing belt (3) at the same time, the stretching assembly (5) further comprises at least one connecting piece (53), the connecting piece (53) is equal to the number of the clamping plates (52) and is detachably connected, the connecting piece (53) adopts bolts, the two ends of the sealing belt (3) are formed in a penetrating mode, through holes for the connecting piece (53) to penetrate through, a clamping groove (32) is formed in the sealing belt (3), the clamping groove (32) is formed in one end of the sealing belt (3), the clamping groove (32) and the clamping groove (32) is formed in the same side of the clamping groove (32), the clamping groove (32) is formed at the side of the sealing belt (32), the other end of the sealing belt (3) is provided with a clamping block (34) which is matched with and connected with the clamping groove (32) in a sliding way, the clamping groove (32) can be a stepped groove or a dovetail groove, and the slot (33) is a U-shaped groove.
  2. 2. The natural gas pipeline tightness safety detection device according to claim 1, wherein the lower sides of the two elastic sealing blocks (42) are respectively provided with a lower cambered surface (421) for abutting against the pipeline (1), the two sides in the horizontal direction are respectively provided with a side cambered surface (422), and the two side cambered surfaces (422) are respectively abutted against the belt surfaces at the two ends of the sealing belt (3).
  3. 3. The safety detection device for tightness of natural gas pipelines according to claim 1, wherein two mounting holes (412) are formed in the lower opening of the pressing hole (411), the pressing block (4) further comprises two rollers (43), the two rollers (43) are respectively connected to the two mounting holes (412) in a rotating mode, and rolling surfaces of the two rollers are respectively abutted to a belt surface of the sealing belt (3).
  4. 4. The natural gas pipeline tightness safety detection device according to claim 1, wherein the force application assembly (6) comprises at least two linear driving members (61) uniformly distributed on the pressing block (4), the expansion and contraction directions of the linear driving members (61) are the opening directions of the pressing holes (411), and the linear driving members (61) are simultaneously connected with the pressing block (4) and the stretching assembly (5).
  5. 5. The natural gas pipeline tightness safety detection device according to claim 4, wherein each linear driving piece (61) comprises a loop bar (611) and two screws (612), one ends of the two screws (612) are respectively connected with two ends of the loop bar (611) in a threaded mode, and the other ends of the two screws are respectively and fixedly connected with the pressing block (4) and the stretching assembly (5), and the rotation directions of the two screws (612) are opposite.
  6. 6. The safety inspection device for tightness of natural gas pipeline according to claim 5, wherein each of the loop bars (611) is formed with external teeth, and wherein the force application assembly (6) further comprises a toothed ring (62) rotatably connected to the press block (4) and/or the stretching assembly (5), and wherein the toothed ring (62) is simultaneously engaged with each of the loop bars (611).

Description

Natural gas pipeline tightness safety detection device Technical Field The invention relates to the technical field of tightness detection, in particular to a safety detection device for tightness of a natural gas pipeline. Background Natural gas is inflammable and explosive gas, and if the sealing performance of a pipeline is poor, leakage occurs, so that energy waste can be caused, and serious safety accidents such as fire and explosion can be caused. Thus, performing a leak test is a necessary measure to ensure safe delivery of natural gas. The chinese patent with the bulletin number CN205879461U discloses a sealed natural gas pipeline interface tightness detection device, including last body and articulated in the lower body of last body one end, it is equipped with the lug to go up body one side bottom, lower body one side top articulates there is the hasp, it all is equipped with the sealing strip in laminating department with lower body to go up the body, it all is equipped with the sealing ring to go up body inner wall both ends, it all is equipped with the lower sealing ring to go up body inner wall both ends down, it is equipped with the natural gas detector to go up the body top, the natural gas detector bottom is equipped with the detection head that runs through in last body pipe wall. Above-mentioned scheme is realized for the sealed space of pipeline linkage segment department through last body, lower body, last sealing ring, lower sealing ring and sealing strip, but this kind of mode must guarantee the uniformity of the internal diameter that upper and lower sealing ring formed and the body external diameter that awaits measuring, otherwise can't satisfy sealed effect, is difficult to use in the detection operation under the different circumstances of pipe diameter. Disclosure of Invention Accordingly, the invention aims to provide a safety detection device for the tightness of a natural gas pipeline, which aims to solve the technical problem that the existing detection device can not detect the tightness of the pipeline connection with different pipe diameters. The invention is realized by the following technical scheme: The utility model provides a natural gas pipeline leakproofness safety inspection device, includes the detector, still includes sealing strip, briquetting and tensile subassembly, the sealing strip is used for cladding pipeline, and its both ends area face butt each other, the briquetting link up and has seted up the pressure hole, the air tank has been seted up to the well end area face of sealing strip, and both ends pass simultaneously the pressure hole, tensile subassembly simultaneously can dismantle connect in the both ends of sealing strip, the briquetting with tensile subassembly is connected with the application of force subassembly simultaneously, the application of force subassembly is used for the drive the briquetting with tensile subassembly is kept away from each other, the detector is installed in the sealing strip, and communicates the air tank. Further, the briquetting includes clamp plate and two one ends respectively can dismantle connect in the elastic sealing piece at clamp plate both ends, two elastic sealing piece all fill simultaneously in contained angle a department that sealing band both ends formed, and all be used for simultaneously the butt in the pipeline, press the hole link up set up in the clamp plate. Further, the lower side of the elastic sealing block is provided with a lower cambered surface for abutting against the pipeline, the two sides of the elastic sealing block in the horizontal direction are provided with side cambered surfaces, and the two side cambered surfaces are respectively abutted against the belt surfaces at the two ends of the sealing belt. Furthermore, the lower opening of the pressing hole is provided with two mounting holes, the pressing block further comprises two rolling shafts, the two rolling shafts are respectively connected with the two mounting holes in a rotating mode, and rolling surfaces of the two rolling shafts are respectively abutted to the belt surface of the sealing belt. Further, the stretching assembly comprises a pulling plate and at least one clamping plate fixedly connected with the pulling plate, the pulling plate is connected with the force application assembly, and the clamping plate is simultaneously clamped and detachably connected with two ends of the sealing band. Further, the stretching assembly further comprises at least one connecting piece, the connecting pieces are equal to the clamping plates in number and are detachably connected one by one, and through holes for the connecting pieces to pass through are formed in the two ends of the sealing belt. Further, the force application assembly comprises at least two linear driving pieces uniformly distributed on the pressing block, the expansion and contraction directions of the linear driving pieces are the opening directions of the pres