CN205155392U - Hydraulic pressure pipe connection structure suitable for under high temperature high pressure condition - Google Patents
Hydraulic pressure pipe connection structure suitable for under high temperature high pressure condition Download PDFInfo
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- CN205155392U CN205155392U CN201521006295.XU CN201521006295U CN205155392U CN 205155392 U CN205155392 U CN 205155392U CN 201521006295 U CN201521006295 U CN 201521006295U CN 205155392 U CN205155392 U CN 205155392U
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- China
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- oil pipe
- hydraulic oil
- hydraulic pressure
- sealing area
- cutting ferrule
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Abstract
The utility model discloses a hydraulic pressure pipe connection structure suitable for under high temperature high pressure condition, including connecting body, hydraulic pressure oil pipe and nut, connect the body cover and establish on hydraulic pressure oil pipe, conical surface interface in the link that connects body and hydraulic pressure oil pipe is equipped with, it is just right at the nut the one end of joint body is opened has movable groove, and the cutting ferrule is installed and is laminated with hydraulic pressure oil pipe external circumferential wall at activity inslot and its inner wall, and the cutting ferrule comprises buffering portion and sealing, and the sealing extends in the conical surface interface along the axis direction of cutting ferrule inwards, and first sealed face and second seal up annular space between face and the hydraulic pressure oil pipe. First sealed face is closely laminated with hydraulic pressure oil pipe external circumferential wall, keeps the annular space between the sealed face of second and the hydraulic pressure oil pipe external circumferential wall, and the inner wall and the hydraulic pressure oil pipe external circumferential wall of sealing body closely laminate, and the lateral wall of buffering portion with and the outer wall on arc expansion part do not closely laminate with the lateral wall in activity groove, guarantee the gas tightness of cutting ferrule subassembly under the high -pressure condition of high temperature.
Description
Technical field
The utility model relates to a kind of hydraulic tube, specifically refers to a kind of hydraulic tube linkage structure be applicable under high-temperature and high-pressure conditions.
Background technique
Traditional hydraulic pipe joint sleeve structurally only has one to seal cutting edge, belong to metal contact seal, its function is when oil pipe and pipe joint assembly connection, tightening nuts, by the extruding of the hydraulic fitting body taper hole conical surface, make the cutting edge of hydraulic pipe joint sleeve cut oil pipe top layer and reach metal contact seal, if tightening nuts overexertion, hydraulic pipe joint sleeve cutting edge excessive incision damage oil pipe will be caused, cause hydraulic pipe joint sleeve to be broken; And the working pressure that traditional hydraulic pipe joint sleeve can bear is no more than 40Mpa, after exceeding, just hydraulic pipe joint sleeve break accident may be there is.
Traditional hydraulic pipe joint sleeve impact force and ocsillator strenght higher time and temperatures as high more than 100 DEG C and vibration frequency at more than 40Hz, pressure in more than 60Mpa and acidity, mine working environment, very easily be out of shape, ftracture and leak, working life is short, can not reach the job requirement that high-end hydraulic fitting pressure uses more than 100 DEG C and in the harsh and unforgiving environments of vibration frequency at more than 40Hz in more than 60Mpa, acidity, mine, temperature.
Model utility content
The purpose of this utility model is to provide a kind of hydraulic tube linkage structure be applicable under high-temperature and high-pressure conditions, improves and is fastened in sealing under high temperature, condition of high voltage or reliability, break, leak under avoiding being fastened in heavy duty and rugged environment.
The purpose of this utility model is achieved through the following technical solutions:
A kind of hydraulic tube linkage structure be applicable under high-temperature and high-pressure conditions, comprise joint body, hydraulic oil pipe and the nut with hydraulic oil pipe screw-thread fit, joint body is set on hydraulic oil pipe, inner conical surface interface is provided with at the connecting end of described joint body and hydraulic oil pipe, just loose slot is had to one end of described joint body at nut, cutting ferrule is arranged in loose slot and its inwall and hydraulic oil pipe outer circle wall are fitted, described cutting ferrule is made up of buffer part and sealed department, described buffer part is eyelet, the outer circle wall of buffer part is provided with radially outwardly and cross section is the enlarged portion of arc, the arc top of enlarged portion contacts with loose slot upper wall, described sealed department is connected with buffer part sidewall and axial direction along cutting ferrule extends in inner conical surface interface, extending end outer wall and the inner conical surface interface inwall of described sealed department adapt, the extending end inwall of sealed department is provided with primary sealing area and secondary sealing area, the inwall of sealed department body and hydraulic oil pipe are fitted, primary sealing area and annular space between secondary sealing area and hydraulic oil pipe, and the longitudinal cross-section of primary sealing area is horizontal plane, the longitudinal cross-section of secondary sealing area is the curved surface along cutting ferrule radially outward depression, it is circular isolation channel that described sealed department and the buffer part inwall that is attached thereto offer multiple cross section, and the diameter of multiple described isolation channel increases progressively along on the direction of joint body level sensing nut.
During utility model works, regulating nut makes it to move along the axial direction of hydraulic oil pipe towards the direction near joint body, when the sidewall contact of the sidewall of loose slot and buffer part, nut moves on the outer circle wall that directly can drive and be fastened in hydraulic oil pipe and moves, now the extending end of sealed department starts to enter into inner conical surface interface, and keep the outer wall of extending end to match with inner conical surface interface inwall, due to primary sealing area and annular space between secondary sealing area and hydraulic oil pipe outer circle wall, and secondary sealing area is the curved surface along cutting ferrule radially outward depression, the active force that this curved surface himself is subject to after extruding can to intramedullary expansion, the simultaneously extending end of the sealed department deformation that can be moved in moving process, the outer circle wall of primary sealing area and hydraulic oil pipe is fitted completely, and then realize holding hydraulic oil pipe tightly, when the extending end of sealed department moves to its limit position, the mated condition of cutting ferrule and hydraulic oil pipe is, primary sealing area and hydraulic oil pipe outer circle wall fit tightly, annular space is kept between secondary sealing area and hydraulic oil pipe outer circle wall, inwall and the hydraulic oil pipe outer circle wall of sealed department body fit tightly, and the arc enlarged portion on the sidewall of buffer part and its outer wall fits tightly with the sidewall of loose slot respectively, namely cutting ferrule is achieved, sealing completely between joint body and nut three, ensure the tightness of joint ferrule assemblies under high-temperature and high-pressure conditions, break under avoiding being fastened in heavy duty and rugged environment, leak.Wherein, buffer part is eyelet, make can produce a certain amount of deformation when the extruding being subject to nut, the enlarged portion of its arc is extruded into and contacts with loose slot upper wall simultaneously, the lower end of buffer part then contacts with hydraulic oil pipe, not only can increase the cushioning effect to sealed department impact when nut moves, avoid the extension part of sealed department excessively to move impaired, the seal between cutting ferrule, joint body and nut three can also be improved further.
And, it is circular isolation channel that sealed department and the buffer part inwall that is attached thereto offer multiple cross section, after nut extruding cutting ferrule, sealed department and buffer part are all by extruding force to a certain extent, the air in isolation channel is made to be discharged a part, compared with ambient pressure, air pressure in isolation channel is relatively low, namely isolation channel is made to form negative pressure to the outer wall of hydraulic oil pipe, namely isolation channel can produce certain suction-operated to hydraulic oil pipe, and then strengthens cutting ferrule and hold dynamics tightly to hydraulic oil pipe; Simultaneously when primary sealing area occurs Local Damaged and reduces the tightness between hydraulic oil pipe outer circle wall, the isolation channel of multiple increasing diameter can intercept step by step to the fluid occurring to leak, isolation channel particularly on buffer part inwall, the deformation quantity that buffer part produces when being subject to the extruding of loose slot two sidewalls is maximum, the hold dynamics of the isolation channel at this place to the outer circle wall of hydraulic oil pipe is made to reach best, namely realize multi-stage sealed, under avoiding high-temperature and high-pressure conditions there is oil leakage phenomenon in hydraulic oil pipe.
Also comprise seal ring, described seal ring is arranged in the annular space of secondary sealing area and hydraulic oil pipe.When the extending end of sealed department is stressed, the working stress that secondary sealing area is subject to is to intramedullary expansion, and then realize primary sealing area and holding tightly between sealed department body bottom surface and hydraulic oil pipe, simultaneously in the annular space of secondary sealing area and hydraulic oil pipe, seal ring is installed, utilize the elastic strain ability of seal ring secondary sealing area can be prevented there is excessive compressional deformation, to ensure the working stability of joint ferrule assemblies.
The tapering of described inner conical surface interface is 0.1 ~ 0.2.As preferably, the tapering of inner conical surface interface is set to 0.1 ~ 0.2, ensure that the extending end of sealed department enters into inner conical surface interface within a short period of time, ensure to have enough surface of contact to realize the maximum sealing effect in the first sealing stage between primary sealing area and hydraulic oil pipe outer circle wall simultaneously.
The utility model compared with prior art, has following advantage and beneficial effect:
1, buffer part of the present utility model is eyelet, make can produce a certain amount of deformation when the extruding being subject to nut, the enlarged portion of its arc is extruded into and contacts with loose slot upper wall simultaneously, the lower end of buffer part then contacts with hydraulic oil pipe, not only can increase when nut moves the cushioning effect that sealed department impacts, avoid the extension part of sealed department excessively to move impaired, the seal between cutting ferrule, joint body and nut three can also be improved further;
2, the utility model is when the extending end of sealed department is stressed, the working stress that secondary sealing area is subject to is to intramedullary expansion, and then realize primary sealing area and holding tightly between sealed department body bottom surface and hydraulic oil pipe, simultaneously in the annular space of secondary sealing area and hydraulic oil pipe, seal ring is installed, utilize the elastic strain ability of seal ring secondary sealing area can be prevented there is excessive compressional deformation, to ensure the working stability of joint ferrule assemblies;
3, the tapering of inner conical surface interface is set to 0.1 ~ 0.2 by the utility model, ensure that the extending end of sealed department enters into inner conical surface interface within a short period of time, ensure to have enough surface of contact to realize the maximum sealing effect in the first sealing stage between primary sealing area and hydraulic oil pipe outer circle wall simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms a application's part, does not form the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is structural representation of the present utility model;
Mark and corresponding component title in accompanying drawing:
1-joint body, 2-hydraulic oil pipe, 3-inner conical surface interface, 4-sealed department, 5-seal ring, 6-buffer part, 7-nut, 8-primary sealing area, 9-secondary sealing area, 10-loose slot, 11-isolation channel.
Embodiment
Clearly understand for making the purpose of this utility model, technological scheme and advantage, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.
Embodiment 1
As shown in Figure 1, the present embodiment comprises joint body 1, hydraulic oil pipe 2 and the nut 7 with hydraulic oil pipe 2 screw-thread fit, joint body 1 is set on hydraulic oil pipe 2, inner conical surface interface 3 is provided with the connecting end of hydraulic oil pipe 2 at described joint body 1, just loose slot 10 is had to one end of described joint body 1 at nut 7, cutting ferrule is arranged in loose slot 10 and its inwall and hydraulic oil pipe 2 outer circle wall are fitted, described cutting ferrule is made up of buffer part 6 and sealed department 4, described buffer part 6 is eyelet, the outer circle wall of buffer part 6 is provided with radially outwardly and cross section is the enlarged portion of arc, the arc top of enlarged portion contacts with loose slot 10 upper wall, described sealed department 4 is connected with buffer part 6 sidewall and extends in inner conical surface interface 3 along the axial direction of cutting ferrule, extending end outer wall and inner conical surface interface 3 inwall of described sealed department 4 adapt, the extending end inwall of sealed department 4 is provided with primary sealing area 8 and secondary sealing area 9, inwall and the hydraulic oil pipe 2 of sealed department 4 body are fitted, primary sealing area 8 and annular space between secondary sealing area 9 and hydraulic oil pipe 2, and the longitudinal cross-section of primary sealing area 8 is horizontal plane, the longitudinal cross-section of secondary sealing area 9 is the curved surface along cutting ferrule radially outward depression, it is circular isolation channel 11 that described sealed department 4 and buffer part 6 inwall that is attached thereto offer multiple cross section, and the diameter of multiple described isolation channel 11 increases progressively along on the direction of joint body 1 level sensing nut 7.
During work, regulating nut makes it to move along the axial direction of hydraulic oil pipe 2 towards the direction near joint body 1, when the sidewall contact of the sidewall of loose slot 10 and buffer part 6, nut 7 moves on the outer circle wall that directly can drive and be fastened in hydraulic oil pipe 2 and moves, now the extending end of sealed department 4 starts to enter into inner conical surface interface 3, and keep the outer wall of extending end to match with inner conical surface interface 3 inwall, due to primary sealing area 8 and annular space between secondary sealing area 9 and hydraulic oil pipe 2 outer circle wall, and secondary sealing area 9 is the curved surface along cutting ferrule radially outward depression, the active force that this curved surface himself is subject to after extruding can to intramedullary expansion, the simultaneously extending end of sealed department 4 deformation that can be moved in moving process, primary sealing area 8 is fitted completely with the outer circle wall of hydraulic oil pipe 2, and then realize holding hydraulic oil pipe 2 tightly, when the extending end of sealed department 4 moves to its limit position, the mated condition of cutting ferrule and hydraulic oil pipe 2 is, primary sealing area 8 and hydraulic oil pipe 2 outer circle wall fit tightly, annular space is kept between secondary sealing area 9 and hydraulic oil pipe 2 outer circle wall, inwall and hydraulic oil pipe 2 outer circle wall of sealed department 4 body fit tightly, and the arc enlarged portion on the sidewall of buffer part 6 and its outer wall fits tightly with the sidewall of loose slot 10 respectively, namely cutting ferrule is achieved, sealing completely between joint body 1 and nut 7 three, ensure the tightness of joint ferrule assemblies under high-temperature and high-pressure conditions, break under avoiding being fastened in heavy duty and rugged environment, leak.Wherein, buffer part 6 is eyelet, make can produce a certain amount of deformation when the extruding being subject to nut, the enlarged portion of its arc is extruded into and contacts with loose slot 10 upper wall simultaneously, the lower end of buffer part 6 then contacts with hydraulic oil pipe 2, not only can increase the cushioning effect to sealed department 4 impact when nut moves, avoid the extension part of sealed department 4 excessively to move impaired, the seal between cutting ferrule, joint body 1 and nut 7 three can also be improved further.
And, it is circular isolation channel 11 that sealed department 4 and buffer part 6 inwall that is attached thereto offer multiple cross section, after nut 7 extrudes cutting ferrule, sealed department 4 and buffer part 6 are all by extruding force to a certain extent, the air in isolation channel 11 is made to be discharged a part, compared with ambient pressure, air pressure in isolation channel 11 is relatively low, namely the outer wall of isolation channel 11 pairs of hydraulic oil pipes 2 is made to form negative pressure, namely isolation channel 11 can produce certain suction-operated to hydraulic oil pipe 2, and then strengthen cutting ferrule and hold dynamics tightly to hydraulic oil pipe 2; Simultaneously when primary sealing area 8 occurs Local Damaged and reduces the tightness between hydraulic oil pipe 2 outer circle wall, the isolation channel 11 of multiple increasing diameter can intercept step by step to the fluid occurring to leak, isolation channel 11 particularly on buffer part 6 inwall, the deformation quantity that buffer part 6 produces when being subject to the extruding of loose slot 10 two sidewalls is maximum, the dynamics of holding tightly of the outer circle wall of isolation channel 11 pairs of hydraulic oil pipes 2 at this place is made to reach best, namely realize multi-stage sealed, under avoiding high-temperature and high-pressure conditions there is oil leakage phenomenon in hydraulic oil pipe 2.
When the extending end of sealed department 4 is stressed, the working stress that secondary sealing area 9 is subject to is to intramedullary expansion, and then realize primary sealing area 8 and holding tightly between sealed department 4 body bottom surface and hydraulic oil pipe 2, in secondary sealing area 9 with the annular space of hydraulic oil pipe 2, seal ring 5 is installed simultaneously, utilize the elastic strain ability of seal ring 5 secondary sealing area 9 can be prevented there is excessive compressional deformation, to ensure the working stability of joint ferrule assemblies.
As preferably, the tapering of inner conical surface interface 3 is set to 0.1 ~ 0.2, ensure that the extending end of sealed department 4 enters into inner conical surface interface 3 within a short period of time, ensure to have enough surface of contact to realize the maximum sealing effect in the first sealing stage between primary sealing area 8 and hydraulic oil pipe 2 outer circle wall simultaneously.
Above-described embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; be understood that; the foregoing is only embodiment of the present utility model; and be not used in restriction protection domain of the present utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. one kind is applicable to the hydraulic tube linkage structure under high-temperature and high-pressure conditions, comprise joint body (1), hydraulic oil pipe (2) and the nut (7) with hydraulic oil pipe (2) screw-thread fit, joint body (1) is set on hydraulic oil pipe (2), it is characterized in that: be provided with inner conical surface interface (3) at described joint body (1) and the connecting end of hydraulic oil pipe (2), just loose slot (10) is had to one end of described joint body (1) at nut (7), cutting ferrule is arranged in loose slot (10) and its inwall and hydraulic oil pipe outer circle wall are fitted, described cutting ferrule is made up of buffer part (6) and sealed department (4), described buffer part (6) is eyelet, the outer circle wall of buffer part (6) is provided with radially outwardly and cross section is the enlarged portion of arc, the arc top of enlarged portion contacts with loose slot (10) upper wall, described sealed department (4) be connected with buffer part (6) sidewall and along the axial direction of cutting ferrule towards inner conical surface interface (3) in extend, extending end outer wall and inner conical surface interface (3) inwall of described sealed department (4) adapt, the extending end inwall of sealed department (4) is provided with primary sealing area (8) and secondary sealing area (9), inwall and the hydraulic oil pipe (2) of sealed department (4) body are fitted, primary sealing area (8) and annular space between secondary sealing area (9) and hydraulic oil pipe (2), and the longitudinal cross-section of primary sealing area (8) is horizontal plane, the longitudinal cross-section of secondary sealing area (9) is the curved surface along cutting ferrule radially outward depression, it is circular isolation channel (11) that described sealed department (4) and buffer part (6) inwall that is attached thereto offer multiple cross section, and the diameter of multiple described isolation channel (11) increases progressively along on the direction of joint body (1) level sensing nut (7).
2. a kind of hydraulic tube linkage structure be applicable under high-temperature and high-pressure conditions according to claim 1, is characterized in that: also comprise seal ring (5), and described seal ring (5) is arranged on secondary sealing area (9) with in the annular space of hydraulic oil pipe (2).
3. a kind of hydraulic tube linkage structure be applicable under high-temperature and high-pressure conditions according to claim 1, is characterized in that: the tapering of described inner conical surface interface (3) is 0.1 ~ 0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521006295.XU CN205155392U (en) | 2015-12-08 | 2015-12-08 | Hydraulic pressure pipe connection structure suitable for under high temperature high pressure condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521006295.XU CN205155392U (en) | 2015-12-08 | 2015-12-08 | Hydraulic pressure pipe connection structure suitable for under high temperature high pressure condition |
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| Publication Number | Publication Date |
|---|---|
| CN205155392U true CN205155392U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521006295.XU Expired - Fee Related CN205155392U (en) | 2015-12-08 | 2015-12-08 | Hydraulic pressure pipe connection structure suitable for under high temperature high pressure condition |
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| Country | Link |
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| CN (1) | CN205155392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351645A (en) * | 2015-12-08 | 2016-02-24 | 四川海搏液压机械有限公司 | Leakage-proof hydraulic pipe ferrule |
-
2015
- 2015-12-08 CN CN201521006295.XU patent/CN205155392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351645A (en) * | 2015-12-08 | 2016-02-24 | 四川海搏液压机械有限公司 | Leakage-proof hydraulic pipe ferrule |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20171208 |