CN202493848U - Valve body joint and pipe joint sealing structure of electronic control valve built in gas meter - Google Patents
Valve body joint and pipe joint sealing structure of electronic control valve built in gas meter Download PDFInfo
- Publication number
- CN202493848U CN202493848U CN2012200660135U CN201220066013U CN202493848U CN 202493848 U CN202493848 U CN 202493848U CN 2012200660135 U CN2012200660135 U CN 2012200660135U CN 201220066013 U CN201220066013 U CN 201220066013U CN 202493848 U CN202493848 U CN 202493848U
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- pipe joint
- valve body
- joint
- seal ring
- sealing
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Abstract
The utility model belongs to the technical field of pipeline valves related to gas metering, and discloses a valve body joint and pipe joint sealing structure of an electronic control valve built in a gas meter. The pipe joint connecting segment of the valve body joint is inserted from one end of the pipe joint, a seal ring is arranged between the outer wall of the pipe joint connecting segment and the inner wall of the pipe joint, and a an annular sealing boss formed by expansion and used for pushing the seal ring to enter the pipe joint along with the pipe joint connecting segment of the valve body joint during assembly is arranged on the outer wall of the pipe joint connecting segment of the valve body joint. The valve body joint and pipe joint sealing structure is characterized in that the outer diameter of the seal ring is smaller than the inner diameter of the pipe joint, the annular boss used for pushing the seal ring to expand so as to compact the inner wall of the pipe joint during the fixation of the pipe joint is arranged between the outer wall of the pipe joint connecting segment of the valve body joint and the inner wall of the pipe joint, and meanwhile, the seal ring is pushed toward the annular sealing component compacted by the annular boss for sealing the valve body joint. The scheme effectively solves the problems of poor sealing or sealing failure further caused by seal ring deformation and damages due to extrusion.
Description
Technical field
The utility model belongs to the pipeline valve technical field relevant with gas metering, relates to the built-in electric-controlled type valve of gas meter, specifically the valve body joint of gas meter built-in electric control valve and the sealing configuration between pipe joint.
Background technique
Gas meter is used by a large amount of for city dweller institute widespread usage because of pipe natural gas, and it is set at the gas pipeline branches end, the corresponding user of unit of each piece gas meter.Early stage gas meter only has the function of metering gas, and the development technological along with motor control reaches the application in valve field, and the gas meter of new generation that early stage gas meter is built-in with electric-controlled type automatic valve (electrically-controlled valve) gradually replaces.A new generation's gas meter can also be through the break-make of electrically-controlled valve control gas pipeline except that having metering gas use amount function.
Said gas meter generally comprises housing, combustible gas metering arrangement, built-in electric control valve; Said built-in electric control valve generally comprises motor, train of reduction gears, valve body, valve rod and spool; Said spool is arranged in the said valve body; Said valve body has two gas ports, and one of them is used for being connected with pipe joint through the valve body joint, and said pipe joint and gas meter housing are fixed; Its inwall is provided with the fixing annular boss of using that extends to form to inner radial; One section of being connected with pipe joint of said valve body joint inserts from pipe joint one end, and the pipe joint linkage section inwall of said valve body joint is provided with internal thread, and an outer peripheral surface is provided with externally threaded fastening piece and inserts and be connected through screw-thread fit with the valve body joint from the pipe joint the other end.It is fixing with annular boss and then realize being connected of valve body joint and pipe joint that said fastening piece afterbody extends out that boss compresses pipe joint.Establish seal ring between the pipe joint linkage section outer wall of said valve body joint and the pipe joint inwall, said valve body joint outer wall respective tube tip side location be provided with extend out formation be used to assemble the time push seal ring and get into the inner annular boss of pipe joint with the pipe joint linkage section of said valve body joint.
Be the pipe joint linkage section outer wall of realizing said valve body joint and the sealing between the pipe joint inwall, said internal diameter of the seal ring should be equal to or slightly less than the pipe joint linkage section outer diameter of said valve body joint, and external diameter then should be slightly larger than the pipe joint inner diameter.But because the precision problem of processing technology, always there is certain error in actual sizes such as seal ring external diameter, pipe joint inner diameter with respect to design size.Less than normal when the seal ring external diameter, and the pipe joint inner diameter is when bigger than normal, and seal ring will not have seal action, examine to filter this, during design seal ring size, have to strengthen its outside dimension.Consequently, generally speaking, the seal ring size is all bigger than normal with respect to internal diameter of pipe joint; Cause in the assembly process, need firmly crush seal circle, brought inconvenience to assembling on the one hand; Excessive compression causes the seal ring distortion easily or damages on the other hand, leads poor sealing or inefficacy.
Summary of the invention
To the problems referred to above that exist in the existing technology, the utility model improves the valve body joint of gas meter built-in electric control valve and the sealing configuration of pipe joint, promptly is convenient to install to reach, again the reliable sealing technique effect.
For realizing above-mentioned purpose; The technological scheme that the utility model adopted is: a kind of valve body joint and pipe joint sealing structure of gas meter built-in electric control valve; Said gas meter generally comprises housing, combustible gas metering arrangement, built-in electric control valve; Said built-in electric control valve comprises valve body and is arranged on the spool in the valve body; Said valve body has two gas ports that supply combustion gas to get into or flow out, and one of them is connected with pipe joint through a valve body joint, and said pipe joint and gas meter housing are fixed; Its inwall is provided with the fixing annular boss of using that extends to form to inner radial; Be used for being connected with pipe joint on the said valve body joint one section inserts from pipe joint one end, and the pipe joint linkage section inwall of said valve body joint is provided with internal thread, and an outer peripheral surface is provided with externally threaded fastening piece and inserts and be connected through screw-thread fit with the valve body joint from the pipe joint the other end.Establish seal ring between the pipe joint linkage section outer wall of said valve body joint and the pipe joint inwall, the pipe joint linkage section outer wall of said valve body joint be provided with extend out formation be used to assemble the time push seal ring and get into the inner sealing of pipe joint with the pipe joint linkage section of said valve body joint and use annular boss.It is characterized in that; Said seal ring external diameter is less than internal diameter of pipe joint; Be provided with one between the pipe joint linkage section outer wall of said valve body joint and the pipe joint inwall and promote down the said seal ring of expansion at pipe joint fixing with annular boss and support and make it compress the pipe joint inwall, promote seal ring simultaneously and use ring-shaped member with the sealing that annular boss compresses to the sealing of valve body joint.
The utility model such scheme; Through selecting the seal ring of external diameter for use, compress by an accessory and fixing expansion of pipe joint, and then the formation of said valve body joint and pipe joint joint is sealed with annular boss realization seal ring less than internal diameter of pipe joint; On the one hand; Because the sealing configuration of the utility model is when assembling, sealing does not touch the fixing with before the annular boss of pipe joint with ring-shaped member, and seal ring and pipe joint do not come in contact; The pipe joint of can packing into very easily; The inconvenience that need firmly push when therefore having solved the seal ring assembling has effectively been avoided because of excessive extruding causes the seal ring distortion, damages, and then has been caused the problem of poor sealing or inefficacy.Adopt the mode of expansion seal ring to seal on the other hand; Bigger variable leeway is arranged; Quality of fit to each parts is less demanding, and each component processing error fills that perhaps scope is big, has effectively solved the low state of the art problem that assembling impacts to part of machining accuracy.The design freedom is high.
In the utility model technique scheme; Said sealing should be to be as the criterion between the pipe joint linkage section outer wall that can be assemblied in the valve body joint and the pipe joint inwall with the to the greatest extent cun design of ring-shaped member; For avoiding this parts damages seal ring, should smoothly be advisable in itself and the contacted surface of seal ring.Though these parts directly apply the pressure of the sealing of sensing valve body joint with annular boss to seal ring, can make seal ring become flat, external diameter is realized and the sealing of pipe joint inwall thereby increase.But when the elastic properties of materials of seal ring is not suitable for taking place than large deformation, this direct extruding type scheme effect will receive very big influence.
For this reason, as a kind of improvement, when having designed a kind of and seal ring and compress, the present invention can use the ring-shaped member structure to the sealing that seal ring produces a kind of expansionary force.Specifically: said sealing has and can produce radial dilatation component and the face with tapering of pushing component of the sealing of pointing to the valve body joint with annular boss to seal ring simultaneously when the crush seal circle with ring-shaped member and the contacted end of said seal ring.
Reach above-mentioned effect, cun parameter to the greatest extent of said face with tapering should satisfy some corresponding condition, and for example: said face with tapering is interior circle radius less than seal ring center line radius, the exradius ring surface greater than seal ring inner ring radius.
Another kind as the utility model improves, and the present invention has also designed a kind of assembly structure that drops and lose with ring-shaped member that can effectively prevent to seal, and tool is stopped as follows:
Said sealing is provided with the convex snap ring with the ring-shaped member inwall near an end of said seal ring; The pipe joint linkage section outer wall of said valve body joint is provided with the evagination snap ring that cooperates with said convex snap ring near the end; Said evagination snap ring, outer circumferential face are interior circle radius less than convex snap ring least radius, the exradius ring surface greater than convex snap ring least radius.
Above-mentioned assembly structure can be when guaranteeing that sealing is assembled on the valve body joint with ring-shaped member with comparalive ease, prevents that effectively sealing from losing with ring-shaped member slippage from the valve body joint.
Description of drawings
Fig. 1 is the external structure schematic representation of common gas meter built-in electric control valve.
Fig. 2 is the internal structure schematic representation of common gas meter built-in electric control valve.
Fig. 3 is gas meter built-in electric control valve body and valve body joint, the triangular linkage structure schematic representation of pipe joint.
Fig. 4 is the utility model gas meter built-in electric control valve body joint and pipe joint sealing structure decomposing schematic representation.
Fig. 5 is the utility model gas meter built-in electric control valve body joint and pipe joint sealing structure generalized section.
Fig. 6 is a circle a part-structure enlarged diagram shown in Figure 5.
Embodiment
Be example with the built-in electric-controlled ball valve of gas meter below, specify the concrete implementation of the technological scheme of the utility model in conjunction with accompanying drawing.
With reference to Fig. 1,2,3, common electric-controlled ball valve mainly comprises motor 6, train of reduction gears 5, valve body 4, valve rod 8 and spool 9 five macrostructures composition, and wherein said motor 6 is separately positioned in electric case 2 and the gear-box 1 with train of reduction gears 5.Said motor 6 is connected with control circuit through lead 3, and is controlled its commentaries on classics, stopped and sense of rotation by control circuit.The speed end gear of said train of reduction gears 5 is installed on the motor output shaft, and the low speed end tooth wheel of said train of reduction gears 5 is assemblied on the valve rod 8.The torque of said motor 6 is passed to valve rod 8 with slow-speed of revolution form after increasing the arm of force step by step through train of reduction gears, drives spool 9 by valve rod 8 and rotates the open and close valve.Said valve body 4 has two gas ports, is respectively applied for air inlet and gives vent to anger, and wherein suction port 11 is provided with seal washer 12 through a valve body joint 10 1 ends that are threaded between said valve body 4 and the valve body joint 10.Said valve body joint 10 the other ends need stretch into pipe joint when assembling part 13 is used for connecting tube joint 14, can be described as pipe joint linkage section 13.The pipe joint linkage section 13 of said valve body joint inserts in it from pipe joint 14 1 ends; The pipe joint linkage section inwall of said valve body joint is provided with internal thread 15; One outer peripheral surface is provided with the tubular fastening piece 17 of outside thread 16 from pipe joint the other end insertion tube joint inside, and said tubular fastening piece and valve body joint are connected through screw thread 15,16.
With reference to Fig. 4,5; The pipe joint of said valve body joint connects holds 13 suits, one seal ring 18; This pipe joint connecting end outer wall is provided with sealing with annular boss 20 in the back, position (insertion tube joint direction is preceding) of suit seal ring 18; Suit one sealing in the front, position of suit seal ring 18 (insertion tube joint direction is preceding) is with ring-shaped member 19, and said sealing uses ring-shaped member 19 ear end faces 22 to be the inclined-plane.
With reference to Fig. 6; Said sealing is provided with convex snap ring 23 with ring-shaped member 19 inwalls near an end of said seal ring; The pipe joint linkage section outer wall of said valve body joint is provided with the evagination snap ring 24 that cooperates with said convex snap ring near the end, and the outer circumferential face 25 of said evagination snap ring 24 is interior circle radius less than convex snap ring least radius, the exradius ring surface greater than convex snap ring least radius.
What should be noted that is, the embodiment that more than gives an example only is a kind of concrete manifestation form of the utility model, and the related technology contents of the utility model never only limits to this.Under the guidance of the utility model technological scheme, any specific embodiment of other that can make all should be within the utility model protection domain.
Claims (4)
1. the valve body joint and the pipe joint sealing structure of a gas meter built-in electric control valve; Said gas meter comprises housing, combustible gas metering arrangement, built-in electric control valve; Said built-in electric control valve comprises valve body and is arranged on the spool in the valve body; Said valve body has two gas ports that supply combustion gas to get into or flow out, and one of them is connected with pipe joint through a valve body joint, and said pipe joint and gas meter housing are fixed; Its inwall is provided with the fixing annular boss of using that extends to form to inner radial; An end that is used for being connected with pipe joint on the said valve body joint inserts from pipe joint one end, and the pipe joint linkage section inwall of said valve body joint is provided with internal thread, and an outer peripheral surface is provided with externally threaded fastening piece and is connected through screw-thread fit from the insertion of the pipe joint the other end and with the valve body joint; Establish seal ring between the pipe joint linkage section outer wall of said valve body joint and the pipe joint inwall, the pipe joint linkage section outer wall of said valve body joint be provided with extend out formation be used to assemble the time push seal ring and get into the inner sealing of pipe joint with the pipe joint linkage section of said valve body joint and use annular boss; It is characterized in that; Said seal ring external diameter is less than internal diameter of pipe joint; Be provided with one between the pipe joint linkage section outer wall of said valve body joint and the pipe joint inwall and promote to expand said seal ring down at pipe joint fixing with annular boss and make it compress the pipe joint inwall, promote seal ring simultaneously and use ring-shaped member with the sealing that annular boss compresses to the sealing of valve body joint.
2. the valve body joint and the pipe joint sealing structure of gas meter built-in electric control valve according to claim 1; It is characterized in that said sealing has and can produce radial dilatation component and the face with tapering of pushing component of the sealing of pointing to the valve body joint with annular boss to seal ring simultaneously when the crush seal circle with ring-shaped member and the contacted end of said seal ring.
3. the valve body joint and the pipe joint sealing structure of gas meter built-in electric control valve according to claim 2 is characterized in that, said face with tapering is interior circle radius less than seal ring center line radius, the exradius ring surface greater than seal ring inner ring radius.
4. according to the valve body joint and the pipe joint sealing structure of each described gas meter built-in electric control valve of claim 1-3; It is characterized in that; Said sealing is provided with the convex snap ring with the ring-shaped member inwall near an end of said seal ring; The pipe joint linkage section outer wall of said valve body joint is provided with the evagination snap ring that cooperates with said convex snap ring near the end, and the outer circumferential face of said evagination snap ring is interior circle radius less than convex snap ring least radius, the exradius ring surface greater than convex snap ring least radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200660135U CN202493848U (en) | 2012-02-27 | 2012-02-27 | Valve body joint and pipe joint sealing structure of electronic control valve built in gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200660135U CN202493848U (en) | 2012-02-27 | 2012-02-27 | Valve body joint and pipe joint sealing structure of electronic control valve built in gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493848U true CN202493848U (en) | 2012-10-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200660135U Expired - Lifetime CN202493848U (en) | 2012-02-27 | 2012-02-27 | Valve body joint and pipe joint sealing structure of electronic control valve built in gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493848U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345021A (en) * | 2015-07-23 | 2017-01-25 | 北京谊安医疗系统股份有限公司 | Connecting piece for flow sensor of breathing machine |
| CN108916507A (en) * | 2018-09-18 | 2018-11-30 | 德清恒升管件有限公司 | A kind of assembling pipe joint easily engaged |
| CN108916502A (en) * | 2018-09-13 | 2018-11-30 | 德清恒升管件有限公司 | A kind of adjustable conduit coupling |
| CN108953794A (en) * | 2018-09-18 | 2018-12-07 | 德清恒升管件有限公司 | A kind of easy-to-dismount conduit coupling |
| CN109027467A (en) * | 2018-09-13 | 2018-12-18 | 德清恒升管件有限公司 | A kind of conduit coupling that sealing device is stable |
| CN110715094A (en) * | 2019-11-12 | 2020-01-21 | 慈溪市凯迪电子有限公司 | Connecting structure of valve body and gear box of gas meter ball valve |
-
2012
- 2012-02-27 CN CN2012200660135U patent/CN202493848U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345021A (en) * | 2015-07-23 | 2017-01-25 | 北京谊安医疗系统股份有限公司 | Connecting piece for flow sensor of breathing machine |
| CN106345021B (en) * | 2015-07-23 | 2019-04-16 | 北京谊安医疗系统股份有限公司 | A kind of connector of the flow sensor for ventilator |
| CN108916502A (en) * | 2018-09-13 | 2018-11-30 | 德清恒升管件有限公司 | A kind of adjustable conduit coupling |
| CN109027467A (en) * | 2018-09-13 | 2018-12-18 | 德清恒升管件有限公司 | A kind of conduit coupling that sealing device is stable |
| CN108916507A (en) * | 2018-09-18 | 2018-11-30 | 德清恒升管件有限公司 | A kind of assembling pipe joint easily engaged |
| CN108953794A (en) * | 2018-09-18 | 2018-12-07 | 德清恒升管件有限公司 | A kind of easy-to-dismount conduit coupling |
| CN110715094A (en) * | 2019-11-12 | 2020-01-21 | 慈溪市凯迪电子有限公司 | Connecting structure of valve body and gear box of gas meter ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |