CN2572183Y - Insertion type gas joint pipe - Google Patents

Insertion type gas joint pipe Download PDF

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Publication number
CN2572183Y
CN2572183Y CN 02260079 CN02260079U CN2572183Y CN 2572183 Y CN2572183 Y CN 2572183Y CN 02260079 CN02260079 CN 02260079 CN 02260079 U CN02260079 U CN 02260079U CN 2572183 Y CN2572183 Y CN 2572183Y
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CN
China
Prior art keywords
joints
sealing ring
head
conical surface
type gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 02260079
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Chinese (zh)
Inventor
郑三会
Original Assignee
郑三会
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 郑三会 filed Critical 郑三会
Priority to CN 02260079 priority Critical patent/CN2572183Y/en
Application granted granted Critical
Publication of CN2572183Y publication Critical patent/CN2572183Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an insertion type gas connection pipe, which comprises a stainless steel corrugated flexible pipe. Both ends of the stainless steel corrugated flexible pipe are welded with joints. The head parts of the joints are curved with external screw threads, and the joints are connected with a connection screw nut to form an inner cavity by screw threads. A sealing ring is arranged in the inner cavity. The circular holes of the head ends of the joints form a bell mouth shape, which causes one end of a sealing ring to be correspondingly in conical surface match with the joints. The axial length of the sealing ring is added, the sealing surface of the connection surface on gas nozzle is enlarged, the stress condition of the sealing ring is improved, the sealing performance is improved, and the service life of the sealing ring is correspondingly extended. Under the condition of higher gas pressure of the pipeline, the utility model keeps safe work, and enlarges the applicable range. The utility model not only can be used for the connection of the pipeline of the gas stove with same gas source, but also can be used for other places for conveying gases and liquids.

Description

A kind of plug-in type gas connection pipe
Technical field
The utility model relates to a kind of accessory of gas range, especially a kind of plug-in type gas connection pipe.
Background technique
People are when using the installation gas range, all need air hose is connected with source of the gas with kitchen range, air hose commonly used at present: a kind of is rubber pipe, when installing and using, pipe two is inserted in respectively on the valve of kitchen range with heating pipe joint, and it is it is fastening with Drop-proof with iron wire or clip, this connection exists many defectives: install and transposing inconvenience, under bending, block gas circuit easily, the rubber pipe corrosion-resistant, easily aging, working life is short, easily gas leak phenomenon takes place, and is dangerous in the use.Another kind is in recent years by the stainless steel ripple hose connector that extensively adopts gradually, be welded with two inserting type pipe joints at two of pipe, China's utility model patent number: ZL972252762 disclosed " plug-in type helical fissure metal hose connector " is this product just, as shown in Figure 1, when installing and using, kitchen range are inserted in the connecting head 2 by coupling nut 3 holes of inserting type pipe joint respectively with the valve 5 of heating pipe joint, tighten coupling nut 3, valve 5 will be close to fixing down and sealing at the radial deformation of seal ring 4.Use this connecting tube, have characteristics such as easy for installation, corrosion-resistant, long service life, overcome the drawback that rubber pipe connects.But, supply in the market with this connecting tube of above patent disclosure, have the following disadvantages on the structural design of its inserting type pipe joint: the cross section of the seal ring 4 in the joint is approximate rectangular shape, lean on coupling nut 3 bottom surfaces with connecting head 2 end face crush seal circles 4 both side surface in the work, making it produce radial deformation seals, though the endoporus of seal ring 4 has certain taper, under the pressurized of bi-side, can produce certain axial deformation, increase sealing effect, but this effect seldom, in this state, as making it that reliable seal action is played on valve 5 surfaces, must make coupling nut 3 tighten to quite tight degree, make seal ring 4 bi-side be subjected to big extruding force and produce big radial deformation, just can play effective seal action, and in this case, can make seal ring 4 pressurizeds excessively produce tired deformation, cause elastic reaction to weaken, service time, length will cause sealing variation to valve 5 surfaces slightly, and the generation gas leak phenomenon, as all the more so under the higher situation of supply air line air pressure.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency that exists at above-mentioned prior art, and a kind of improved good seal performance, long service life are provided, can realize the safe and reliable a kind of plug-in type gas connection pipe that is connected of gas range and source of the gas supply pipeline.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: the plug-in type gas connection pipe, comprise a stainless steel ripple flexible pipe, its two ends are welded with head and are carved with externally threaded connecting head, and be threaded with a coupling nut, form an inner chamber, be provided with a seal ring in the inner chamber, the mouth of described connecting head head end circular hole is horn-like, seal ring is the conical surface by an end with connecting head head end horn mouth mutually, its conical surface of fastening back is installed is complementary with the bell-mouthed conical surface of connecting head head end.
Compared with prior art, advantage of the present utility model is: the mouth of the connecting head head end circular hole of connecting tube is designed to horn-like port, seal ring one end corresponds to cone match with it, has increased the axial length of seal ring, strengthens with the sealing surface that is connected the valve surface when it is used; Two are tightening under the coupling nut effect when being to use, seal ring one end moment shape face portion is subjected to axial pressure and produces radial deformation, the other end conical surface part is out of shape with radially pressure effect being subjected to simultaneously axially, the two plays the fit sealing effect to connecting the extruding of valve surface jointly, thereby make sealability better, make this gas connection pipe under the higher situation of pipeline air pressure, keep safe and reliable work, enlarged applicable scope simultaneously.
Description of drawings
Fig. 1 is existing plug-in type gas connection pipe structural representation (broken section).
Fig. 2 is the utility model embodiment's a structural representation (broken section).
Fig. 3 is part (connection end) enlarged view of Fig. 2.
Fig. 4 is the structural representation (analysing and observe) of seal ring 4 in the utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
With reference to Fig. 2~shown in Figure 4, the plug-in type gas connection pipe comprises stainless steel ripple flexible pipe 1, its two ends are welded with head and are carved with externally threaded connecting head 2, connecting head 2 is threaded with coupling nut 3, forms an inner chamber, is provided with the seal ring 4 that the rubber of a usefulness good corrosion resistance is made in the inner chamber.It is hexagon that described connecting head 2 afterbodys have one section 22 profile, and the mouth 21 of connecting head 2 head end circular holes is horn-like, and its conical surface angle of bevel can be selected in 10 °~35 ° scopes, and present embodiment is 20 °.Seal ring 4 is the conical surface by an end 41 with connecting head 2 head end horn mouths 21 mutually, and its angle of bevel can be selected in 8 °~20 ° scopes, and present embodiment is 12 °.The conical surface of installing and using fastening back seal ring 4 one ends 41 is complementary with the conical surface of connecting head 2 head end horn mouths 21.
When installing and using, shown in Fig. 2,3, valve 5 with gas range, heating pipe joint directly is inserted in the connecting head 2 for 3 mouthfuls by coupling nut respectively, tightens coupling nut 3, and valve 5 will be squeezed to produce radially and be close to fixing and sealing down with axial deformation at seal ring 4.
Application of the present utility model is not limited to the safe and reliable connection of gas range with the source of the gas pipeline, also can be used for the occasion that other carries gas, liquid.

Claims (4)

1. plug-in type gas connection pipe, comprise a stainless steel ripple flexible pipe (1), its two ends are welded with head and are carved with externally threaded connecting head (2), and be threaded with a coupling nut (3), form an inner chamber, be provided with a seal ring (4) in the inner chamber, it is characterized in that: the mouth (21) of described connecting head (2) head end circular hole is horn-like, the same connecting head of seal ring (4) (2) head end horn mouth (21) is the conical surface by an end (41) mutually, and the conical surface that the fastening back same connecting head of its conical surface (2) head end horn mouth (21) is installed is complementary.
2. a kind of plug-in type gas connection pipe according to claim 1 is characterized in that: the conical surface angle of bevel of the horn mouth (21) of described connecting head (2) head end can be selected in 10 °~35 ° scopes.
3. a kind of plug-in type gas connection pipe according to claim 1 is characterized in that: the conical surface angle of bevel of described seal ring (4) one ends (41) can be selected in 8 °~20 ° scopes.
4. a kind of plug-in type gas connection pipe according to claim 1 is characterized in that: it is hexagon that described connecting head (2) afterbody has one section (22) profile.
CN 02260079 2002-09-18 2002-09-18 Insertion type gas joint pipe Expired - Fee Related CN2572183Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02260079 CN2572183Y (en) 2002-09-18 2002-09-18 Insertion type gas joint pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02260079 CN2572183Y (en) 2002-09-18 2002-09-18 Insertion type gas joint pipe

Publications (1)

Publication Number Publication Date
CN2572183Y true CN2572183Y (en) 2003-09-10

Family

ID=33727221

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02260079 Expired - Fee Related CN2572183Y (en) 2002-09-18 2002-09-18 Insertion type gas joint pipe

Country Status (1)

Country Link
CN (1) CN2572183Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102788211A (en) * 2012-08-07 2012-11-21 谢家明 Connecting device used for connecting gas stove with stove front valve
CN103104769A (en) * 2013-02-06 2013-05-15 姜堰市华劲管件厂 Stainless steel anti-explosion flexible pipe free of welding
CN103807468A (en) * 2014-02-27 2014-05-21 丹阳市飞轮气体阀门有限公司 Low-temperature safety valve air seal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102788211A (en) * 2012-08-07 2012-11-21 谢家明 Connecting device used for connecting gas stove with stove front valve
CN102788211B (en) * 2012-08-07 2015-09-23 深圳市民乐管业有限公司 For connecting the connection set of valve before gas cooker and stove
CN103104769A (en) * 2013-02-06 2013-05-15 姜堰市华劲管件厂 Stainless steel anti-explosion flexible pipe free of welding
CN103104769B (en) * 2013-02-06 2015-08-19 姜堰市华劲管件厂 Exempt from the explosion-proof flexible tube of soldering stainless steel
CN103807468A (en) * 2014-02-27 2014-05-21 丹阳市飞轮气体阀门有限公司 Low-temperature safety valve air seal

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee