CN110068420B - Pre-tightening type self-sealing pressure gauge joint - Google Patents
Pre-tightening type self-sealing pressure gauge joint Download PDFInfo
- Publication number
- CN110068420B CN110068420B CN201910348021.5A CN201910348021A CN110068420B CN 110068420 B CN110068420 B CN 110068420B CN 201910348021 A CN201910348021 A CN 201910348021A CN 110068420 B CN110068420 B CN 110068420B
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- China
- Prior art keywords
- pressure gauge
- rubber sealing
- pipe
- sealing piece
- flange
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- 238000007789 sealing Methods 0.000 title claims abstract description 84
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 210000001503 joint Anatomy 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 241000283216 Phocidae Species 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 238000012795 verification Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pre-tightening self-sealing pressure gauge joint, which comprises a tubular body, a pre-tightening self-sealing mechanism and an adapter, wherein the tubular body adopts a stepped pipe body with a large upper part and a small lower part, the pipe body is respectively provided with a first pipe at the lower part and a second pipe at the upper part, the external threads of the first pipe are used for butting a butt joint opening on a pressure gauge calibration table, an air flow cavity is arranged in the first pipe and the second pipe, the air flow cavity is of a three-step structure with gradually increasing bottom to top, the upper end of the inside of the second pipe is radially provided with a flange, and the lower end surface of the flange is in a smooth arc shape; the pre-tightening self-sealing mechanism comprises a compression spring and a rubber sealing piece, wherein the rubber sealing piece is in a spherical round plate shape, the center of the rubber sealing piece is provided with a vent hole, and the edge of the upper end face of the rubber sealing piece is in fit and sealing connection with the lower end face of the flange; the adapter is cylindrical, the inner diameter hole of the adapter is in a secondary step shape which is reduced from top to bottom, the lower step is in threaded connection with the peripheral thread of the second bobbin, and the inner wall thread of the upper step is used for connecting with the pressure gauge interface.
Description
Technical Field
The invention relates to the technical field of monitoring of hydraulic connectors, in particular to a pre-tightening self-sealing pressure gauge joint.
Background
The pressure gauge has very wide application in various fields of production and life. According to the relevant national regulations, pressure gauges must be regularly checked in use to ensure their accuracy. In general, during verification, a standard pressure gauge and a pressure gauge to be verified are installed on a pressure gauge verification table (usually in threaded connection), then the pressure gauge is pressurized to a pressure value to be verified by using the verification table, and the standard pressure gauge and the pressure gauge to be detected are compared with each other, so that verification of the pressure gauge is completed. Because the pressure is always provided in the verification process, the tightness of the connection of the standard pressure gauge, the pressure gauge to be detected and the pressure verification table must be ensured to finish the verification of the pressure gauge.
At present, most pressure checking tables ensure the tightness of the connection with the pressure gauge by additionally installing a sealing gasket or a sealing ring, and the connection needs to be tightly screwed with force, even needs to be tightly screwed with force by using tools such as plates or pipe tongs, so that the tightness can be ensured, and great inconvenience is brought to users; the repeated forced tightening process is also very easy to damage the sealing gasket or the sealing ring, and the working efficiency of the existing equipment is affected.
Disclosure of Invention
The invention aims to provide a pre-tightening self-sealing pressure gauge joint which can easily screw a pressure gauge on a pressure gauge checking table, and is simple to operate, time-saving and labor-saving.
The invention adopts the technical scheme that:
the utility model provides a pretension formula self sealss manometer connects, includes tubular body, pretension formula self sealss mechanism and adapter, the tubular body adopt big-end-up's step form body, set up respectively to the first bobbin of lower part and the second bobbin of upper portion, be equipped with the screw thread on the periphery of first bobbin and second bobbin, the external screw thread of first bobbin is used for docking the interface on the manometer check table, be equipped with the air current chamber in first bobbin and the second bobbin, the air current chamber is the three echelonment structures that increase gradually from bottom to top, be located first step passageway in first bobbin center, be located second step passageway and third step passageway in the second bobbin; the upper end of the second bobbin is provided with a flange along the radial direction, and the lower end surface of the flange is in a smooth arc shape; the pre-tightening self-sealing mechanism comprises a compression spring and a rubber sealing piece, the compression spring is vertically arranged in the second step channel, the periphery of the compression spring is fixedly extruded with the inner wall of the second step channel, and the top end of the compression spring is abutted against the lower end face of the rubber sealing piece; the rubber sealing piece is in a spherical round plate shape, the center of the rubber sealing piece is provided with a vent hole, and the edge of the upper end face of the rubber sealing piece is in fit sealing connection with the lower end face of the flange; the adaptor is cylindrical, the inner diameter hole of the adaptor is in a secondary step shape which is reduced from top to bottom, threads are respectively arranged on the inner wall of each step, the lower step is in threaded connection with the peripheral threads of the second bobbin, and the threads on the inner wall of the upper step are used for connecting with the pressure gauge interface.
The lower part of the periphery of the second bobbin is provided with a plate clamping part.
The rubber sealing piece adopts fluorine-filled rubber sealing piece.
The centers of the first step channel, the second step channel, the third step channel, the vent hole and the inner diameter hole are on the same axis.
The periphery of the adapter is provided with anti-skid knurling.
The invention is mainly used for screwing the pressure gauge on the pressure gauge checking table, the adapter is used for screwing the pressure gauge, and the external thread of the first bobbin is used for butting the butting port on the pressure gauge checking table. The edge of the rubber sealing piece is in sealing fit with a flange arranged at the upper end of the second bobbin along the radial direction under the action of pressure, so that a pre-tightening state is formed. The device is provided with the flange along the radial direction at the upper end of the inside of the second bobbin, the lower end face of the flange is smooth arc-shaped, the radian of the smooth arc-shaped and the radian of the rubber sealing sheet are kept consistent, when the rubber sealing sheet is extruded by strong air flow, the sealing sheet can be applied and connected in a sealing way, on one hand, a good sealing effect is achieved, and on the other hand, the service life of the rubber sealing sheet is prolonged.
When the pressure gauge is in butt joint with the adapter, the lower end face of the pressure gauge is abutted against the upper end face of the rubber sealing sheet, when air flow enters the second step channel and the third step channel, the rubber sealing sheet is raised upwards by a small amplitude when being subjected to air flow pressure, and when being raised, the rubber sealing sheet and the flange form a pre-tightening state, and on one hand form sealing with the lower end face of the pressure gauge, and the air flow pressure is zero leaked into the pressure gauge to complete pressurization.
Similarly, when calibration or detection is finished, the pressure disappears, and the rubber sealing sheet is restored to the original position and is only supported by the compression spring, and the compression spring is used for positioning the rubber sealing sheet and guaranteeing the height position of the rubber sealing sheet.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is an enlarged view of the portion a in fig. 2 according to the present invention.
Detailed Description
As shown in fig. 1 and 2, the invention comprises a tubular body, a pre-tightening self-sealing mechanism and an adapter 11, wherein the tubular body adopts a stepped pipe body with a large upper part and a small lower part, a first pipe 1 at the lower part and a second pipe 2 at the upper part are respectively arranged, threads are arranged on the peripheries of the first pipe 1 and the second pipe 2, the external threads of the first pipe 1 are used for abutting against an abutting joint on a pressure gauge checking table, an air flow cavity is arranged in the first pipe 1 and the second pipe 2, the air flow cavity is in a three-step structure with gradually increased steps from bottom to top, a first step channel 3 is arranged in the center of the first pipe 1, and a second step channel 4 and a third step channel 5 are arranged in the second pipe 2; as shown in fig. 3, the second bobbin 2 has a flange 6 provided at an upper end thereof in a radial direction, and a lower end surface of the flange 6 has a smooth arc shape. The lower part of the periphery of the second bobbin 2 is provided with a board clamping part 7. The centers of the first step channel 3, the second step channel 4, the third step channel 5, the vent hole 10 and the inner diameter hole are on the same axis.
The pre-tightening self-sealing mechanism comprises a compression spring 8 and a rubber sealing piece 9, wherein the compression spring 8 is vertically arranged in the second step channel 4, the periphery of the compression spring 8 is fixedly extruded with the inner wall of the second step channel 4, and the top end of the compression spring 8 is abutted against the lower end face of the rubber sealing piece 9.
The rubber sealing piece 9 is in a spherical round piece shape, the center of the rubber sealing piece 9 is provided with a vent hole 10, and the rubber sealing piece 9 adopts fluorine-filled rubber sealing piece 9. The edge of the upper end face of the rubber sealing piece 9 is in fit and sealing connection with the lower end face of the flange 6.
The adapter 11 is in a cylinder shape, the inner diameter hole of the adapter 11 is in a secondary step shape which is reduced from top to bottom, threads are respectively arranged on the inner wall corresponding to each step, the lower step is in threaded connection with the peripheral threads of the second bobbin 2, and the threads on the inner wall of the upper step are used for connecting a pressure gauge interface. The periphery of the adapter 11 is provided with an anti-skid knurl 12.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The device is mainly used for screwing the pressure gauge on the pressure gauge checking table, the adapter 11 is used for screwing the pressure gauge, and the external thread of the first bobbin 1 is used for butt joint of a butt joint port on the pressure gauge checking table. First, the lower end of the pressure gauge is screwed with the internal thread of the upper end of the adaptor 11. Then the first bobbin 1 of the device is abutted against the abutting joint on the pressure gauge checking table. When pressure detection or calibration is carried out, pressure recharging is carried out, air flow enters the first step channel 3 through the butt joint opening on the pressure gauge calibration table, the diameter of the first step channel 3 is smaller, air flow pressure is conveniently kept, then the second step channel 4 and the third step channel 5 are filled rapidly, meanwhile, due to the blocking effect of the rubber sealing piece 9, the air flow presses the lower end face of the rubber sealing piece 9, the rubber sealing piece 9 is extruded upwards under the pressure effect, and the edge of the rubber sealing piece 9 is in sealing fit with the flange 6 arranged at the upper end of the second bobbin 2 in the radial direction, so that a pre-tightening state is formed. The rubber sealing piece 9 adopts the fluorine-filled rubber sealing piece 9, and the fluorine-filled rubber can resist oil and increase toughness; the rubber sealing piece 9 is in a spherical round plate shape, so that the pressure caused by strong air flow is reduced, and the round plate-shaped rubber sealing piece is in surface sealing, and compared with an annular sealing ring, the sealing effect is good, and the damage probability is low.
And this device is equipped with flange 6 along radial at the inside upper end of second bobbin 2, and the lower terminal surface of flange 6 is smooth arcuation, and smooth arcuation keeps unanimous with rubber seal piece 9 radian, when rubber seal piece 9 received the extrusion of strong air current, can seal to apply to be connected, plays good sealed effect on the one hand, on the other hand extension rubber seal piece 9's life. Because the conventional flange 6 is flat, when the rubber seal 9 is pressed against the flange 6, the rubber seal is easily pressed by the corner of the flange 6, and is easily cut, and even more easily broken.
The air flow then enters the inlet of the pressure gauge through a vent hole 10 provided in the centre of the rubber sealing plate 9. When the manometer is in butt joint with the adapter 11, the lower end face of the manometer is in contact with the upper end face of the rubber sealing piece 9, when air flow enters the second step channel 4 and the third step channel 5, the rubber sealing piece 9 is subjected to air flow pressure, small-amplitude protrusions are upwards formed, and meanwhile, a pre-tightening state is formed with the flange 6, sealing is formed with the lower end face of the manometer, and the air flow pressure is zero-leaked into the manometer, so that pressurization is completed.
Similarly, at the end of calibration or detection, the pressure disappears, the rubber sealing sheet 9 is restored to the original position and is only supported by the compression spring 8, and the compression spring 8 is used for positioning the rubber sealing sheet 9 and guaranteeing the height position of the rubber sealing sheet 9, so that the rubber sealing sheet 9 is quickly in sealing butt joint with the flange 6 and the lower end face of the pressure gauge under the pressure of the rapid strong air flow.
Optimally, the caliber of the device can be formulated according to the specification of the pressure gauge, so that the pressure gauge calibration without the specification is satisfied.
Preferably, the anti-skid knurls 12 are arranged on the whole periphery of the connector 11 of the device, so that an operator can screw the connector conveniently and quickly.
Preferably, the lower part of the periphery of the second bobbin 2 of the device is provided with a plate clamping part 7, so that an operator can conveniently use pliers to apply external force, and the installation is more firm. Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present invention.
Claims (3)
1. The utility model provides a pretension formula self sealss manometer connects which characterized in that: the self-sealing device comprises a tubular body, a pre-tightening self-sealing mechanism and an adapter, wherein the tubular body adopts a stepped pipe body with a large upper part and a small lower part, a first pipe tube and a second pipe tube with a large upper part are respectively arranged on the outer circumferences of the first pipe tube and the second pipe tube, the external threads of the first pipe tube are used for butt joint on a checking table of a pressure gauge, an airflow cavity is arranged in the first pipe tube and the second pipe tube, the airflow cavity is of a three-step structure with gradually increased from bottom to top, a first step channel is positioned in the center of the first pipe tube, and a second step channel and a third step channel are positioned in the second pipe tube; the upper end of the second bobbin is provided with a flange along the radial direction, and the lower end surface of the flange is in a smooth arc shape; the pre-tightening self-sealing mechanism comprises a compression spring and a rubber sealing piece, the compression spring is vertically arranged in the second step channel, the periphery of the compression spring is fixedly extruded with the inner wall of the second step channel, and the top end of the compression spring is abutted against the lower end face of the rubber sealing piece; the rubber sealing piece is in a spherical round plate shape, the center of the rubber sealing piece is provided with a vent hole, and the edge of the upper end face of the rubber sealing piece is in fit sealing connection with the lower end face of the flange; the adaptor is cylindrical, the inner diameter hole of the adaptor is in a secondary step shape which is reduced from top to bottom, threads are respectively arranged on the inner wall of each step, the lower step is in threaded connection with the peripheral threads of the second bobbin, and the threads on the inner wall of the upper step are used for connecting with the pressure gauge interface; the centers of the first step channel, the second step channel, the third step channel, the vent hole and the inner diameter hole are on the same axis; the periphery of the adapter is provided with anti-skid knurling.
2. The preloaded self-sealing pressure gauge joint of claim 1 wherein: the lower part of the periphery of the second bobbin is provided with a plate clamping part.
3. The preloaded self-sealing pressure gauge joint of claim 2 wherein: the rubber sealing piece adopts fluorine-filled rubber sealing piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910348021.5A CN110068420B (en) | 2019-04-28 | 2019-04-28 | Pre-tightening type self-sealing pressure gauge joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910348021.5A CN110068420B (en) | 2019-04-28 | 2019-04-28 | Pre-tightening type self-sealing pressure gauge joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110068420A CN110068420A (en) | 2019-07-30 |
| CN110068420B true CN110068420B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910348021.5A Active CN110068420B (en) | 2019-04-28 | 2019-04-28 | Pre-tightening type self-sealing pressure gauge joint |
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| Country | Link |
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| CN (1) | CN110068420B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113551953B (en) * | 2021-07-22 | 2023-06-09 | 延安大学 | A rapid detection device for natural gas sampling |
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|---|---|---|---|---|
| JPH0637740U (en) * | 1991-08-14 | 1994-05-20 | 大阪瓦斯株式会社 | Flange pipe joint pressure resistance tester |
| WO2006137424A1 (en) * | 2005-06-21 | 2006-12-28 | Koganei Corporation | Pressure status display device |
| WO2010041709A1 (en) * | 2008-10-09 | 2010-04-15 | 株式会社ダイゾー | Sealing structure for aerosol container, aerosol container, and aerosol container manufacturing method |
| CN203881486U (en) * | 2014-03-25 | 2014-10-15 | 孙建勇 | Self-sealing type pressure gage joint |
| CN104267154A (en) * | 2014-10-17 | 2015-01-07 | 河南省计量科学研究院 | Gas analyzer calibration device |
| CN204214589U (en) * | 2014-10-15 | 2015-03-18 | 林慧敏 | Pressure tapping |
| CN206554917U (en) * | 2017-02-13 | 2017-10-13 | 中国石油天然气股份有限公司 | Section sealing throttler |
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| CN207180938U (en) * | 2017-08-30 | 2018-04-03 | 兰州兰石检测技术有限公司 | A kind of pressure calibration external hanging type buffers self-cleaning device |
| CN208488207U (en) * | 2018-06-15 | 2019-02-12 | 山东中准检测技术有限公司 | A kind of pressure tapping for pressure gauge calibrating installation |
| CN209606015U (en) * | 2019-04-28 | 2019-11-08 | 河南省计量科学研究院 | A pre-tightened self-sealing pressure gauge joint |
-
2019
- 2019-04-28 CN CN201910348021.5A patent/CN110068420B/en active Active
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|---|---|---|---|---|
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| WO2006137424A1 (en) * | 2005-06-21 | 2006-12-28 | Koganei Corporation | Pressure status display device |
| WO2010041709A1 (en) * | 2008-10-09 | 2010-04-15 | 株式会社ダイゾー | Sealing structure for aerosol container, aerosol container, and aerosol container manufacturing method |
| CN203881486U (en) * | 2014-03-25 | 2014-10-15 | 孙建勇 | Self-sealing type pressure gage joint |
| CN204214589U (en) * | 2014-10-15 | 2015-03-18 | 林慧敏 | Pressure tapping |
| CN104267154A (en) * | 2014-10-17 | 2015-01-07 | 河南省计量科学研究院 | Gas analyzer calibration device |
| CN206554917U (en) * | 2017-02-13 | 2017-10-13 | 中国石油天然气股份有限公司 | Section sealing throttler |
| CN207005531U (en) * | 2017-06-27 | 2018-02-13 | 安徽江淮汽车集团股份有限公司 | Pressure test tap |
| CN207180938U (en) * | 2017-08-30 | 2018-04-03 | 兰州兰石检测技术有限公司 | A kind of pressure calibration external hanging type buffers self-cleaning device |
| CN208488207U (en) * | 2018-06-15 | 2019-02-12 | 山东中准检测技术有限公司 | A kind of pressure tapping for pressure gauge calibrating installation |
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| CN110068420A (en) | 2019-07-30 |
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