CN112649078B - Clamping structure and hanging sealing structure for gas meter detection device - Google Patents
Clamping structure and hanging sealing structure for gas meter detection device Download PDFInfo
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- CN112649078B CN112649078B CN202011636625.9A CN202011636625A CN112649078B CN 112649078 B CN112649078 B CN 112649078B CN 202011636625 A CN202011636625 A CN 202011636625A CN 112649078 B CN112649078 B CN 112649078B
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- 238000007789 sealing Methods 0.000 title claims abstract description 56
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 239000000725 suspension Substances 0.000 claims description 7
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 6
- 210000001503 joint Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
- F16L3/11—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing and hanging from a pendant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a clamping structure and a hanging sealing structure for a gas meter detection device, which relate to the technical field of instrument testing equipment and comprise a positioning bracket and a clamping assembly, wherein the clamping assembly is positioned above the positioning bracket, and the positioning bracket is provided with a guide hole; the clamping assembly comprises two openable threaded brackets, a threaded clamp capable of horizontally rotating around the center of the guide hole is arranged on the clamping surface of each threaded bracket, the threaded clamp is arc-shaped, and an inner thread is arranged on the inner ring surface of each threaded clamp. The invention ensures that the high-reliability detection is realized in an automatic detection environment.
Description
Technical Field
The invention relates to the technical field of instrument testing equipment, in particular to a clamping structure hanging sealing structure for a gas meter detection device.
Background
The batch detection of the metering and sealing performance of the prior gas meter is completed by supplying air with constant flow and constant pressure on a special detection table, which requires that the detection table is provided with a sealing and clamping mechanism of a gas meter inlet and outlet interface.
In order to solve the problems of unreliable tightness detection, inconvenient installation and the like of the sealing clamping mechanism, the prior art provides a clamping sealing assembly and a hanging type clamping sealing mechanism of a gas meter detection table, and the patent number is as follows: the ZL201721652933.4 creates better gas meter examined effect in the prior art, but under the automatic detection environment, the risk of high reliability cannot be achieved due to the complex structure.
Disclosure of Invention
The invention aims to provide a clamping structure and a hanging sealing structure for a gas meter detection device, which ensure that high-reliability detection is realized in an automatic detection environment.
In order to achieve the aim of the invention, the technical scheme adopted is as follows:
the clamping structure for the gas meter detection device comprises a positioning bracket and a clamping assembly, wherein the clamping assembly is positioned above the positioning bracket, and the positioning bracket is provided with a guide hole; the clamping assembly comprises two openable threaded brackets, a threaded clamp capable of horizontally rotating around the center of the guide hole is arranged on the clamping surface of each threaded bracket, the threaded clamp is arc-shaped, and an inner thread is arranged on the inner ring surface of each threaded clamp.
Further, the clamping surface of the thread bracket is provided with a thread clamping seat, the thread clamp is clamped between the thread clamping seat and the positioning bracket, and the thread clamp can not move back and forth and left and right.
Further, the lower surface of the thread clamping seat is provided with an arc boss, the circle center of the arc boss and the circle center of the guide hole are on the same straight line, and the thread clamp is also provided with an arc groove in sliding fit with the arc boss.
Further, both ends of the two thread clamps are provided with inward inclined inner conical surfaces.
Further, the thread clamp is made of brass.
Further, the clamping assembly further comprises a clamping jaw cylinder, and the two threaded brackets are respectively arranged on the two clamping jaws of the clamping jaw cylinder.
Further, the guide hole is a tapered hole.
A suspension seal arrangement for a gas meter sensing device comprising two clamping assemblies as claimed in any one of the preceding claims.
Further, the device also comprises two positioning pipes capable of moving up and down, the central axes of the positioning pipes and the center of the guide hole are on the same straight line, and the lower end surfaces of the two positioning pipes are sealing surfaces.
Furthermore, a sealing gasket is embedded on the lower end face of the positioning pipe.
Furthermore, the sealing gasket is in a step sleeve shape, and the inner wall of the positioning tube is provided with a step surface matched with the sealing gasket.
Furthermore, the two positioning pipes are provided with air nozzles.
Further, the adjustable positioning device also comprises a telescopic element, wherein the output end of the telescopic element is fixedly provided with an adjustable positioning plate, and two positioning pipes are both arranged on the adjustable positioning plate.
Further, a fixing plate is further arranged on the top of the telescopic element.
Further, the telescopic element is a cylinder.
The invention has the advantages that,
according to the gas meter, the thread clamps are arranged to horizontally rotate around the center of the positioning support, and the threads are formed on the inner annular surfaces of the thread clamps, so that when the gas meter gas inlet pipe or the gas outlet pipe is clamped by the two thread clamps, the inner threads on the thread clamps can be tightly matched with the outer threads on the gas meter gas inlet pipe or the gas outlet pipe, the phenomenon of tooth jump is avoided, the outer threads on the gas meter gas inlet pipe or the gas outlet pipe are not damaged, the clamping of the gas meter gas inlet pipe or the gas outlet pipe is more stable and reliable, and the reliability of the gas meter in the detection process is higher.
According to the invention, the guide hole on the positioning bracket is arranged into the conical hole, so that the guide hole can guide the gas inlet pipe or the gas outlet pipe of the gas meter when the gas inlet pipe or the gas outlet pipe of the gas meter is required to be clamped, the gas inlet pipe or the gas outlet pipe of the gas meter can accurately enter between the two threaded clamps, and the clamping of the gas inlet pipe or the gas outlet pipe of the gas meter is more accurate and reliable.
According to the invention, the two ends of the screw thread clamp are provided with the inward inclined inner conical surfaces, so that when the external threads on the gas inlet pipe or the gas outlet pipe of the gas meter deviate from the center of the screw thread clamp, the inner conical surfaces can guide the external threads on the gas inlet pipe or the gas outlet pipe of the gas meter to the center of the screw thread clamp, and the screw thread clamp is matched with the external threads on the gas inlet pipe or the gas outlet pipe of the gas meter.
According to the invention, the sealing gasket is in a step sleeve shape, and the step surface matched with the sealing gasket is arranged in the positioning pipe, so that the sealing gasket is clamped at the lower end of the positioning pipe, the sealing gasket is prevented from falling off, and the sealing reliability is ensured.
Drawings
FIG. 1 is a cross-sectional view of a suspension seal structure according to the present invention
FIG. 2 is an enlarged view of a portion of the clamping structure of FIG. 1;
FIG. 3 is a block diagram of the thread clamp of FIG. 2;
FIG. 4 is a schematic view of a hanging seal gas meter with the hanging seal structure provided by the invention.
The reference numerals and corresponding part names in the drawings:
1. the gas meter comprises a telescopic element, 2, an adjustable positioning plate, 3, a clamping jaw cylinder, 4, a threaded support, 5, a positioning tube, 6, a sealing gasket, 7, a step surface, 8, a first sealing surface, 9, a threaded clamping seat, 10, an arc boss, 11, a threaded clamp, 12, a positioning plane, 13, a positioning support, 14, a guide hole, 15, a conical surface, 16, an arc groove, 17, a fixing plate, 18, a second sealing surface, 19 and a gas meter.
Detailed Description
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
Example 1
As shown in fig. 2, the clamping structure for the gas meter detection device provided by the invention comprises a positioning bracket 13 and a clamping component, wherein the clamping component is positioned above the positioning bracket 13, the positioning bracket 13 is provided with a guide hole 14, the center of the guide hole 14 and the clamping center of the clamping component are on the same straight line, namely, the gas meter 19 gas inlet pipe or gas outlet pipe clamped by the clamping component and the central axis of the guide hole 14 are on the same straight line, so that the gas meter 19 gas inlet pipe or gas outlet pipe can enter the center of the clamping component through the guide of the guide hole 14 before being clamped by the clamping component, and the clamping component can accurately clamp the gas meter 19 gas inlet pipe or gas outlet pipe.
The clamping assembly comprises two openable threaded brackets 4, the two threaded brackets 4 are oppositely arranged, the two threaded brackets 4 are opened and closed through the relative action of the two threaded brackets 4, and specifically, the relative action of the two threaded brackets 4 can be horizontal relative movement or open and close at a certain angle; the clamping surface of the thread bracket 4 is also provided with a thread clamp 11, the thread clamp 11 is arc-shaped, the thread clamp 11 can horizontally rotate, and the rotation center of the thread clamp 11 is the circle center of the guide hole 14; the internal ring surface of the thread clamp 11 is also provided with an internal thread which is matched with an external thread on the outer wall of the air inlet pipe or the air outlet pipe of the gas meter 19, so that when the two thread clamps 11 clamp the clamped piece, the internal thread on the thread clamp 11 is meshed with the external thread on the air inlet pipe or the air outlet pipe of the gas meter 19.
Through the horizontal rotation of screw thread checkpost 11, make screw thread checkpost 11 when pressing from both sides tight gas table 19 intake pipe or outlet duct, accessible rotatory screw thread checkpost 11 makes the position of internal thread obtain adjusting, make screw thread checkpost 11 when pressing from both sides tight gas table 19 intake pipe or outlet duct, the external screw thread on internal thread and the gas table 19 intake pipe or the outlet duct can be better interlock, effectively prevent to receive the damage to the external screw thread on gas table 19 intake pipe or the outlet duct, not only guaranteed that the centre gripping of gas table 19 intake pipe or outlet duct is more firm, and make the connection of being held the piece in follow-up test or use more firm, reliable.
When the gas meter 19 needs to be hung and clamped, the gas inlet pipe or the gas outlet pipe of the gas meter 19 passes through the guide hole 14 on the positioning support 13, then the two threaded supports 4 are gradually closed, the two threaded clamps 11 are gradually closed, when the two threaded clamps 11 gradually clamp the gas inlet pipe or the gas outlet pipe of the gas meter 19, the two threaded clamps 11 can be rotated to a certain angle, so that internal threads on the two threaded clamps 11 are meshed with external threads on the gas inlet pipe or the gas outlet pipe of the gas meter 19, and finally the two threaded supports 4 drive the two threaded clamps 11 to be completely clamped, so that the gas inlet pipe or the gas outlet pipe of the gas meter 19 is clamped and fixed, and at the moment, the gas inlet pipe or the gas outlet pipe of the gas meter 19 can be further blocked.
Example 2
As shown in fig. 2 and 3, the following optimization is performed on the clamping structure for the gas meter 19 detection device in embodiment 1 according to embodiment 2:
preferably, the clamping surface of the screw thread bracket 4 is fixedly provided with a screw thread clamping seat 9 in a threaded or welded mode, the upper surface of the positioning bracket 13 is a positioning plane 12, a certain gap is formed between the lower surface of the screw thread clamping seat 9 and the positioning plane 12, the width of the gap is matched with the thickness of the screw thread clamp 11, and the screw thread clamp 11 is clamped between the screw thread clamping seat 9 and the positioning plane 12, so that the screw thread clamp 11 can not move up and down; meanwhile, the screw thread clamp 11 can not move left and right before being arranged between the screw thread clamping seat 9 and the positioning support 13, so that the screw thread clamp 11 can only rotate around the center of the guide hole 14 between the screw thread clamping seat 9 and the positioning plane 12, the screw thread clamp is more stable to install, the screw thread clamp 11 is more stable to rotate, the gas inlet pipe or the gas outlet pipe of the gas meter 19 is more convenient to adjust the screw thread clamp 11 in the clamping process, and unnecessary displacement of the screw thread clamp 11 is avoided.
Preferably, the lower surface of the thread clamping seat 9 is provided with an arc boss 10, the section of the arc boss 10 can be rectangular, triangular, trapezoid and other shapes, the arc boss 10 and the thread clamping seat 9 or the positioning bracket 13 are of an integrated structure, the circle center of the arc boss 10 and the circle center of the guide hole 14 are on the same straight line, the thread clamp 11 is also provided with an arc groove 16 which is in sliding fit with the arc boss 10, the arc groove 16 is positioned on the upper surface of the thread clamp 11, when the thread clamp 11 needs to rotate, the thread clamp 11 can only rotate around the circle center of the guide hole 14 through the guidance of the circular boss, the rotation of the thread clamp 11 is more accurate, the thread clamp 11 is effectively prevented from falling off, and the installation of the thread clamp 11 is simpler and more stable. According to the change of the structure, the arc boss 10 can also be directly arranged on the inner wall of the thread bracket 4, and the arc groove 16 is formed on the outer ring surface of the thread clamp 11; or the arc boss 10 is arranged on the thread clamp 11, and the arc groove 16 is arranged on the thread clamp seat 9.
Preferably, the two ends of the thread clips 11 are provided with inward inclined inner conical surfaces 15, so that after the two thread clips 11 are clasped, two opposite V-shaped grooves are formed in a circle formed by the inner rings of the two thread clips 11, the inner conical surfaces 15 at the two ends of the thread clips 11 can guide the gas inlet pipe or the gas outlet pipe of the gas meter 19 in the clamping process of the gas inlet pipe or the gas outlet pipe of the gas meter 19, when the external threads on the gas inlet pipe or the gas outlet pipe of the gas meter 19 deviate from the center of the thread clips 11, the inner conical surfaces 15 can guide the external threads on the gas inlet pipe or the gas outlet pipe of the gas meter 19 to the center of the thread clips 11, and the external threads on the thread clips 11 and the gas inlet pipe or the gas outlet pipe of the gas meter 19 are guaranteed to be matched.
Preferably, the screw thread clamp 11 is made of brass material, so that the screw thread clamp 11 has good plasticity, not only can prevent the screw thread clamp 11 from damaging external threads on an air inlet pipe or an air outlet pipe of the gas meter 19, but also can ensure that the inner surface of the screw thread clamp 11 is still intact after more than 2 ten thousands of continuous clamping/loosening tests, has no deformation cracking phenomenon,
preferably, the clamping assembly further comprises a clamping jaw air cylinder 3, the two threaded brackets 4 are respectively arranged on the two clamping jaws of the clamping jaw air cylinder 3, and the two threaded brackets 4 are driven to relatively move by the driving of the clamping jaw air cylinder 3, so that the driving of the threaded brackets 4 is more convenient; meanwhile, the clamping jaw cylinder 3 in the embodiment can also be replaced by two independent cylinders or hydraulic cylinders or other linear driving elements such as an electronic telescopic rod.
Preferably, the guide hole 14 is a tapered hole, that is, the diameter of one side of the guide hole 14 near the threaded clip 11 is smaller than the diameter of the guide hole 14 near the lower end face of the positioning bracket 13, so that when the gas meter 19 gas inlet pipe or gas outlet pipe passes through the guide hole 14, the central axis of the gas meter 19 gas inlet pipe or gas outlet pipe can be gradually aligned with the clamping center of the threaded clip 11 through the guide of the guide hole 14, the positioning of the gas meter 19 gas inlet pipe or gas outlet pipe is more reliable, and the position of the gas meter 19 gas inlet pipe or gas outlet pipe after clamping is more accurate.
For a better understanding of the inventive concept, the working principle of the above-described preferred modes will now be described again after combining them:
when the gas meter 19 needs to be hung and clamped, the gas inlet pipe or the gas outlet pipe of the gas meter 19 passes through the guide hole 14 on the positioning support 13, then the clamping jaw cylinder 3 drives the two threaded supports 4 to be gradually close, so that the threaded clamping seat 9 and the threaded clamp 11 on the threaded supports 4 move synchronously, the two threaded clamps 11 are gradually clamped, when the two threaded clamps 11 gradually clamp the gas inlet pipe or the gas outlet pipe of the gas meter 19, the two threaded clamps 11 can be rotated, when the threaded clamps 11 rotate, the threaded clamps 11 always rotate around the circle center of the guide hole 14 through the cooperation of the circular arc boss 10 and the circular arc groove 16, so that the two threaded clamps 11 rotate at a certain angle on the periphery of the gas inlet pipe or the gas outlet pipe of the gas meter 19, and therefore, internal threads on the two threaded clamps 11 are all meshed with external threads on the gas inlet pipe or the gas outlet pipe of the gas meter 19, when the clamping jaw cylinder 3 is completely clamped, the two threaded clamps 11 are jointly clamped on the gas inlet pipe or the gas outlet pipe of the gas meter 19, so that the gas inlet pipe or the gas outlet pipe of the gas meter 19 is clamped and fixed, and the gas meter 19 can be further blocked.
In this embodiment, since the opening of the thread clamp 11 is smaller in the opening process, when the thread clamp seat 9 drives the thread clamp 11 to move, the thread clamp 11 cannot be completely dislocated with the positioning bracket 13, so that when two thread clamps 11 are opened, the thread clamp 11 cannot fall off from the thread clamp seat 9; if the opening of the two screw thread clips 11 is larger in the opening process, and the screw thread clips 11 are completely misplaced with the positioning bracket 13 after the two screw thread clips 11 are completely opened, in order to avoid the screw thread clips 11 from falling off from the screw thread clip seat 9, at this time, the section of the arc boss 10 can be set to be an inverted T shape or an isosceles trapezoid.
The clamping structures in embodiment 1 and embodiment 2 of this embodiment can be used not only for clamping the air inlet pipe or the air outlet pipe of the gas meter 19, but also for clamping the air inlet pipe or the air outlet pipe with external threads on the outer wall of other equipment.
Example 3
As shown in fig. 1, 2, 3 and 4, embodiment 3 proposes a hanging seal structure for a gas meter 19 detecting device on the basis of embodiment 1 or embodiment 2, where the hanging seal structure includes two clamping structures as described in embodiment 1 or embodiment 2, so that when the gas meter 19 needs to be tested for tightness and the like, the two clamping structures respectively clamp and fix the gas inlet pipe and the gas outlet pipe of the gas meter 19, thereby realizing hanging and fixing of the gas meter 19.
When the gas meter 19 needs to be tested, after the gas inlet pipe and the gas outlet pipe of the gas meter 19 are clamped and fixed through the two clamping structures, the gas meter 19 is hung and fixed, at the moment, the gas inlet pipe and the gas outlet pipe of the gas meter 19 are plugged, then the gas meter 19 is inflated through the gas inlet pipe or the gas outlet pipe, the pressure is maintained after the gas is inflated, and the air pressure change inside the gas meter 19 is monitored, so that the tightness inside the gas meter 19 is obtained.
Preferably, the hanging sealing structure further comprises two positioning pipes 5 capable of moving up and down, the inside of each positioning pipe 5 is of a hollow structure, the upper ends of the positioning pipes 5 are in a sealing shape, the lower ends of the positioning pipes 5 are in an open shape, the central axes of the positioning pipes 5 and the centers of the guide holes 14 are in the same straight line, and the positioning pipes 5 are in butt joint with the air inlet pipe or the air outlet pipe of the gas meter 19 through the up-down movement of the positioning pipes 5, so that the blocking of the air inlet pipe or the air outlet pipe of the gas meter 19 is realized. The lower end face of the positioning tube 5 is a sealing face, so that when the positioning tube 5 moves downwards to be in butt joint with the gas inlet tube or the gas outlet tube of the gas meter 19, the lower end face of the positioning tube 5 is in sealing fit with the upper end face of the gas inlet tube or the gas outlet tube of the gas meter 19, and the plugging effect of the gas inlet tube or the gas outlet tube of the gas meter 19 is better.
Preferably, the sealing gasket 6 is embedded in the lower end surface of the positioning tube 5, the lower surface of the sealing gasket 6 is a first sealing surface 8, and the first sealing surface 8 is higher than the lower end surface of the positioning tube 5, so that when the positioning tube 5 is in butt joint with the air inlet pipe or the air outlet pipe of the gas meter 19, the lower end surface of the sealing gasket 6 is tightly pressed on the second sealing surface 18 in butt joint with the air inlet pipe or the air outlet pipe of the gas meter 19, and the sealing performance of the positioning tube 5 after the butt joint with the air inlet pipe or the air outlet pipe of the gas meter 19 is better.
Preferably, the sealing gasket 6 is in a step sleeve shape, the diameter of the upper end of the sealing gasket 6 is larger than that of the lower end of the sealing gasket 6, the inner wall of the positioning tube 5 is provided with a step surface 7 matched with the sealing gasket 6, and after the sealing gasket 6 is installed, the sealing gasket 6 cannot fall off from the positioning tube 5 through the matching of the step on the outer wall of the sealing gasket 6 and the step surface 7 on the inner wall of the positioning tube 5, so that the installation of the sealing gasket 6 is more stable.
Preferably, the two positioning pipes 5 are provided with air nozzles, the air nozzles are communicated with the inside of the positioning pipes 5, and the positioning pipes 5 can be inflated through the air nozzles, so that the inside of the gas meter 19 is filled with compressed air, and the tightness of the gas meter 19 is measured by measuring the pressure change inside the gas meter 19 under the pressure maintaining state of the gas meter 19.
Preferably, the suspension sealing structure further comprises a telescopic element 1, and when the suspension sealing structure is installed, the telescopic element 1 is fixed on the frame; the output end of the telescopic element 1 is fixedly provided with an adjustable positioning plate 2, and two positioning pipes 5 are arranged on the lower surface of the adjustable positioning plate 2; meanwhile, in the actual installation process of the hanging sealing structure, the positioning support 13 and the clamping jaw air cylinder 3 are fixed on the equipment rack through screws, and in order to facilitate the installation of the positioning support 13, the positioning support 13 can be L-shaped, the vertical part of the positioning support 13 is fixed on the equipment rack, the horizontal part of the positioning support 13 can be circular, and the horizontal part of the positioning support 13 is located below the spiral clamp.
Preferably, the top of the telescopic element 1 is also provided with a fixing plate 17, the fixing plate 17 and the top of the telescopic element 1 are fixed by screws, and the fixing plate 17 can be directly fixed on the frame or the frame by screws when the hanging sealing structure is installed, so that the hanging sealing structure is more convenient to install.
Preferably, the telescopic element 1 is an air cylinder, and the telescopic element 1 may also be a hydraulic cylinder, an electronic telescopic rod, or other linear driving elements.
When the gas meter 19 needs to be hung and clamped, the gas inlet pipe or the gas outlet pipe of the gas meter 19 passes through the guide hole 14 on the positioning support 13, then the clamping jaw cylinder 3 drives the two threaded supports 4 to be gradually close, so that the threaded clamping seat 9 and the threaded clamp 11 on the threaded supports 4 move synchronously, the two threaded clamps 11 are gradually clamped, when the two threaded clamps 11 gradually clamp the gas inlet pipe or the gas outlet pipe of the gas meter 19, the two threaded clamps 11 can be rotated, when the threaded clamps 11 rotate, the threaded clamps 11 always rotate around the circle center of the guide hole 14 through the cooperation of the circular arc boss 10 and the circular arc groove 16, so that the two threaded clamps 11 rotate at a certain angle on the periphery of the gas inlet pipe or the gas outlet pipe of the gas meter 19, and therefore, internal threads on the two threaded clamps 11 are all meshed with external threads on the gas inlet pipe or the gas outlet pipe of the gas meter 19, and when the clamping jaw cylinder 3 is completely clamped, the two threaded clamps 11 are jointly clamped on the gas inlet pipe or the gas outlet pipe of the gas meter 19, so that the gas inlet pipe or the gas meter 19 is clamped and fixed.
Then, the telescopic element 1 pushes the adjustable positioning plate 2 to move downwards, so that the two positioning pipes 5 move downwards synchronously, the two positioning pipes 5 are respectively butted on the air inlet pipe and the air outlet pipe of the gas meter 19, and the first sealing surface 8 of the positioning pipe 5 is in sealing butt joint with the second sealing surface 18 on the air inlet pipe and the air outlet pipe of the gas meter 19, so that the air inlet pipe and the air outlet pipe of the gas meter 19 are blocked.
The gas valve is used for inflating the positioning tube 5 to keep certain air pressure in the gas meter 19, and the air tightness of the gas meter 19 is measured by detecting the air pressure change in the gas meter 19.
After the gas meter 19 finishes detection, the telescopic element 1 contracts to drive the adjustable positioning plate 2 and the positioning pipes 5 to move upwards to reset, so that the two positioning pipes 5 are far away from the gas meter 19 gas inlet pipe and the gas outlet pipe, the gas meter 19 is decompressed, finally, the clamping jaw cylinder 3 acts, the two clamping jaws of the clamping jaw cylinder 3 respectively drive the two threaded brackets 4 to move, the two threaded brackets 4 are opened, thereby driving the two threaded clamping seats 9 and the threaded clamps 11 to open, the two threaded clamps 11 lose the holding of the gas meter 19 gas inlet pipe or the gas outlet pipe, and the gas meter 19 is moved downwards to enable the gas inlet pipe and the gas outlet pipe of the gas meter 19 to be taken out from the guide holes 14 on the two positioning brackets 13 respectively.
In the embodiment, the clamping jaw air cylinder 3 and the telescopic element 1 in the embodiment 2 and the embodiment 3 can directly control the reversing of the air path and the pressure regulation in the gas meter 19 through the PLC control system, namely, an electromagnetic pressure regulating valve and a reversing valve are arranged on the air path of the clamping jaw air cylinder 3 and the telescopic element 1, and the pressure regulating valve and the reversing valve are in circuit connection with the PLC control system; meanwhile, in order to facilitate the change of the air pressure in the gas meter 19, a pressure sensor can be arranged in the two positioning pipes 5, so that the gas meter 19 can monitor the change of the pressure in the gas meter 19 through the pressure sensor in a pressure-keeping state, and the pressure sensor can be directly connected with a PLC control system circuit.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. The hanging sealing structure for the gas meter detection device is characterized by comprising a positioning bracket (13) and a clamping assembly, wherein the clamping assembly is positioned above the positioning bracket (13), and a guide hole (14) is formed in the positioning bracket (13); the clamping assembly comprises two openable threaded brackets (4), a threaded clamp (11) capable of horizontally rotating around the center of the guide hole (14) is arranged on the clamping surface of each threaded bracket (4), each threaded clamp (11) is arc-shaped, and an inner thread capable of being meshed with the gas meter air inlet pipe or the gas meter air outlet pipe is arranged on the inner annular surface of each threaded clamp (11); the clamping surface of the threaded bracket (4) is provided with a threaded clamping seat (9), a threaded clamp (11) is clamped between the threaded clamping seat (9) and a positioning bracket (13), and the threaded clamp (11) can not move forwards, backwards, leftwards and rightwards; the lower surface of the thread clamping seat (9) is provided with an arc boss (10), the circle center of the arc boss (10) and the circle center of the guide hole (14) are on the same straight line, and the thread clamp (11) is also provided with an arc groove (16) which is in sliding fit with the arc boss (10).
2. The hanging seal structure for gas meter detecting device according to claim 1, wherein both ends of the two screw thread clips (11) are provided with inward inclined inner conical surfaces (15).
3. Suspension seal structure for gas meter detection device according to claim 1, characterized in that the screw clip (11) is made of brass material.
4. The hanging seal structure for gas meter detecting device according to claim 1, wherein the clamping assembly further comprises a jaw cylinder (3), and two screw brackets (4) are respectively mounted on two jaws of the jaw cylinder (3).
5. The hanging seal structure for gas meter detecting device according to claim 1, wherein the guide hole (14) is a tapered hole.
6. The hanging seal structure for gas meter detecting apparatus according to any one of claims 1 to 5, wherein the number of the clamping members is two.
7. The hanging seal structure for gas meter detecting device according to claim 6, further comprising two positioning pipes (5) movable up and down, wherein the center axis of the positioning pipe (5) is on the same straight line with the center of the guide hole (14), and the lower end faces of the two positioning pipes (5) are both sealing faces.
8. The hanging sealing structure for the gas meter detecting device according to claim 7, wherein the sealing gasket (6) is embedded in the lower end face of the positioning tube (5).
9. The hanging seal structure for a gas meter detecting device according to claim 8, wherein the sealing gasket (6) is of a step sleeve shape, and the inner wall of the positioning tube (5) is provided with a step surface (7) matched with the sealing gasket (6).
10. The hanging seal structure for gas meter detecting device according to claim 7, wherein the two positioning pipes (5) are provided with air nozzles.
11. The hanging seal structure for a gas meter detecting device according to claim 7, further comprising a telescopic element (1), wherein an adjustable positioning plate (2) is fixedly arranged at the output end of the telescopic element (1), and two positioning pipes (5) are both arranged on the adjustable positioning plate (2).
12. Suspension sealing structure for a gas meter detection device according to claim 11, characterized in that the top of the telescopic element (1) is also fitted with a fixing plate (17).
13. Suspension seal structure for a gas meter detection device according to claim 11, characterized in that the telescopic element (1) is a cylinder.
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| CN202011636625.9A CN112649078B (en) | 2020-12-31 | 2020-12-31 | Clamping structure and hanging sealing structure for gas meter detection device |
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| CN202011636625.9A CN112649078B (en) | 2020-12-31 | 2020-12-31 | Clamping structure and hanging sealing structure for gas meter detection device |
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| CN112649078A CN112649078A (en) | 2021-04-13 |
| CN112649078B true CN112649078B (en) | 2024-03-15 |
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