High-pressure-resistant explosion-proof perfluoroether rubber pipe

Abstract

The utility model relates to the technical field of perfluoroether rubber pipes, and discloses a high-pressure-resistant explosion-proof perfluoroether rubber pipe which comprises a pipe sleeve section, a corrugated pipe section and a conveying pipe section, the pipe sleeve section, the corrugated pipe section and the conveying pipe section are all made of perfluoroether rubber materials, and the pipe sleeve section, the corrugated pipe section and the conveying pipe section are sequentially connected. The pipe sleeve section is used for being connected with an external connector, and the corrugated pipe section is tightly attached to the pipe sleeve section. The perfluoroether rubber pipe is divided into the pipe sleeve section, the corrugated pipe section and the conveying pipe section which are sequentially connected, when the pipe sleeve section is subjected to large pressure, the pressure is dispersed through self-adaptive stretching of the elastic force of the corrugated pipe section, the corrugated pipe section absorbs pressure fluctuation, stress concentration of a pipe body is reduced, falling is avoided, meanwhile, the pressure is released, and the service life of the pipe body is prolonged. Pipeline burst is avoided, and the high-pressure-resistant and anti-explosion effects of the perfluoroether rubber pipe are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to perfluoroether rubber pipe technical field, specifically is a kind of high-pressure explosion-proof perfluoroether rubber pipe. BACKGROUND

[0002] Perfluoroether rubber pipe (FFKM) is a kind of high-performance sealing material, mainly by perfluoro (methyl vinyl) ether, tetrafluoroethylene and perfluoroolefin ether terpolymer composition. This material has excellent chemical corrosion resistance, high temperature resistance and high pressure resistance, and is widely used in high-pressure liquid transmission system.

[0003] The connection of the existing perfluoroether rubber pipe and connector is influenced by pressure fluctuation and stress concentration, and the connection can generate large pressure, and the connection is easy to loosen or the pipe pressure is too large to cause pipe explosion. In addition, when the pressure in the pipe changes, the rubber pipe itself is also easy to stretch or deform excessively, thereby affecting its service life and safety, and therefore a high-pressure explosion-proof perfluoroether rubber pipe is proposed. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a high-pressure explosion-proof perfluoroether rubber pipe to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high-pressure explosion-proof perfluoroether rubber pipe, comprising a sleeve section, a corrugated pipe section and a conveying pipe section, the sleeve section, the corrugated pipe section and the conveying pipe section are all made of perfluoroether rubber material, the sleeve section, the corrugated pipe section and the conveying pipe section are connected in sequence, the sleeve section is used for connecting with external connector, the length of the sleeve section is not more than 5cm, and the corrugated pipe section is closely attached to the sleeve section.

[0006] Preferably, the inner wall of the sleeve section is fixedly connected with an inner sleeve, the inner sleeve has a T-shaped structure in cross section, the inner sleeve is inserted into the inner wall of the external connector, and one end of the inner sleeve extends to the outside of the sleeve section.

[0007] Preferably, a plurality of deformation grooves are formed in the outer wall of the inner sleeve, and a first rounded surface and a second rounded surface are respectively formed in the end portion outer wall of the inner sleeve and the end portion inner wall of the sleeve section.

[0008] Preferably, one end of the shielding pipe is fixedly connected with the conveying pipe section, and the shielding pipe shields the inner wall of the corrugated pipe section.

[0009] Preferably, in the non-extended state of the corrugated pipe section, one end of the shielding pipe extends into the sleeve section and abuts against one end of the inner sleeve.

[0010] Preferably, the inner wall of the shielding tube is smaller in diameter at one end than at the other end, and the minimum inner diameter of the shielding tube is equal to the inner diameter of the inner sleeve.

[0011] Preferably, the outer wall of the shielding tube at one end in the tube sleeve section is provided with a clearance slot, the inner wall of the tube sleeve section near one end of the corrugated tube section is fixedly connected with a stop ring, the stop ring is located in the clearance slot, and a spring abutting against the stop ring and the shielding tube is sleeved in the clearance slot.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses a perfluoroether rubber pipe, which comprises a tube sleeve section, a corrugated tube section and a conveying tube section connected in sequence.

[0014] Other features and advantages of the present utility model will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present utility model. The objects and other advantages of the present utility model can be realized and achieved by means of the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is Figure 2 It is the partial close -up view of A in the middle;

[0017] Figure 3 It is the cross section structure schematic diagram of conveying tube section and inner sleeve of the utility model;

[0018] Figure 4 It is the cross section structure schematic diagram of shielding tube, conveying tube section and inner sleeve of the utility model.

[0019] In the drawing: 1, tube sleeve section;2, corrugated tube section;3, conveying tube section;4, inner sleeve;5, first fillet;6, second fillet;7, deformation groove;8, shielding tube;9, clearance slot;10, stop ring;11, spring. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0021] Please refer to Figures 1-4 The utility model discloses a kind of high-pressure-resistant explosion-proof perfluoroether rubber pipes, including pipe sleeve section 1, bellow section 2 and conveying pipe section 3, pipe sleeve section 1, bellow section 2 and conveying pipe section 3 are all prepared from perfluoroether rubber material, pipe sleeve section 1, bellow section 2 and conveying pipe section 3 are sequentially connected, pipe sleeve section 1 is used to connect with external connection head, pipe sleeve section 1 is sleeved in the outer wall of external connection head, the length of pipe sleeve section 1 is not more than 5cm, bellow section 2 is tightly attached to pipe sleeve section 1, and then when pipe sleeve section 1 is connected with external connection head and used, if pipe sleeve section 1 is subjected to greater pressure, pressure is dispersed by the elastic force of bellow section 2 self-adapting expansion and contraction, bellow section 2 absorbs pressure fluctuation, reduces pipe stress concentration, and then avoids falling off, simultaneously, pressure is released, avoids pipeline burst, improves the high-pressure resistance and explosion-proof effect of perfluoroether rubber pipe.

[0022] The inner wall of pipe sleeve section 1 is fixedly connected with inner sleeve 4, the section of inner sleeve 4 is T-shaped structure, inner sleeve 4 is inserted in the inner wall of external connection head, inner sleeve 4 is located in the direction of liquid flow, and the liquid applies thrust to inner sleeve 4 in the process, and then further avoids the phenomenon that pipe sleeve section 1 is separated from external connection head due to excessive pressure, and further improves the stability and pressure resistance effect of use.

[0023] The outer wall of inner sleeve 4 is provided with a plurality of deformation grooves 7, and the end portion outer wall of inner sleeve 4 and the end portion inner wall of pipe sleeve section 1 are respectively provided with first fillet 5 and second fillet 6, when inner sleeve 4 is inserted into the inner wall of external connection head, first fillet 5 can guide inner sleeve 4 to be extruded into external connection head, and deformation groove 7 allows inner sleeve 4 to deform, which facilitates deformation and extrusion into external connection head, and the second fillet 6 of the end portion of pipe sleeve section 1 also has a guiding property, which facilitates the sleeve on the outer wall of external connection head.

[0024] One end of conveying pipe section 3 is fixedly connected with shielding pipe 8, shielding pipe 8 shields the inner wall of bellow section 2, and then when the pressure in the pipeline is not large, the liquid enters shielding pipe 8 from conveying pipe section 3, and then directly enters pipe sleeve section 1, without impacting bellow section 2 to cause its deformation or elongation, to ensure that bellow section 2 can deform and release pressure when releasing pressure.

[0025] In the state that the corrugated pipe section 2 does not extend, one end of the shielding pipe 8 extends into the pipe sleeve section 1 and abuts against one end of the inner sleeve pipe 4, further facilitating the liquid transported in the shielding pipe 8 to directly enter the pipe sleeve section 1, reducing the liquid backflow and increasing the pressure in the pipeline.

[0026] The inner wall of the shielding pipe 8 has one end with a smaller diameter than the other end, and the minimum inner diameter of the shielding pipe 8 is equal to the inner diameter of the inner sleeve pipe 4, which facilitates the shielding pipe 8 to directly guide the liquid into the inner sleeve pipe 4 for liquid transportation, reduces the phenomenon of liquid backflow increasing the internal pressure of the pipeline, and further improves the practicality.

[0027] The outer wall of one end of the shielding pipe 8 located in the pipe sleeve section 1 is provided with a clearance slot 9, the inner wall of one end of the pipe sleeve section 1 close to the corrugated pipe section 2 is fixedly connected with a stop ring 10, the stop ring 10 is located in the clearance slot 9, and the clearance slot 9 is sleeved with a spring 11 abutting against the stop ring 10 and the shielding pipe 8, the spring 11 exerts a pushing force on the shielding pipe 8 in the direction of the inner sleeve pipe 4 by the blocking of the stop ring 10, the pipeline is stretched due to the pressure, the spring 11 can offset a certain degree of stretching force, thereby reducing the phenomenon that the corrugated pipe section 2 is excessively stretched and deformed and damaged, and improving the practicality.

Claims

1. A high pressure resistant explosion-proof perfluoroether rubber tube, characterized by, The utility model provides a pipeline, including pipe sleeve section (1), corrugated pipe section (2) and conveying pipe section (3), pipe sleeve section (1), corrugated pipe section (2) and conveying pipe section (3) are connected in proper order, pipe sleeve section (1) is used for connecting with the outer connecting head, the length of pipe sleeve section (1) is no more than 5cm, the corrugated pipe section (2) is close in pipe sleeve section (1).

2. The high pressure resistant explosion-proof perfluoro-ether rubber tube according to claim 1, characterized in that, The inner wall of pipe sleeve section (1) is fixedly connected with inner sleeve pipe (4), the section of inner sleeve pipe (4) is T-shaped structure, inner sleeve pipe (4) is inserted in the inner wall of outer connecting head, one end of inner sleeve pipe (4) extends to the outside of pipe sleeve section (1).

3. The high pressure resistant explosion-proof perfluoroether rubber tube according to claim 2, characterized in that, The outer wall of inner sleeve pipe (4) is provided with a plurality of deformation grooves (7), and the end portion outer wall of inner sleeve pipe (4) and the end portion inner wall of pipe sleeve section (1) are respectively provided with first rounded face (5) and second rounded face (6).

4. The high pressure resistant explosion-proof perfluoroether rubber tube according to claim 2, characterized by, One end of conveying pipe section (3) is fixedly connected with shielding pipe (8), and the inner wall of corrugated pipe section (2) is shielded by shielding pipe (8).

5. The high pressure resistant explosion-proof perfluoroether rubber tube according to claim 4, characterized in that, In the non-extension state of corrugated pipe section (2), one end of shielding pipe (8) extends into pipe sleeve section (1) and abuts against one end of inner sleeve pipe (4).

6. The high pressure resistant explosion-proof perfluoroether rubber tube according to claim 5, characterized by The inner wall of shielding pipe (8) has one end diameter smaller than the other end diameter, and the minimum inner diameter of shielding pipe (8) is equal to the inner diameter of inner sleeve pipe (4).

7. The high pressure resistant explosion-proof perfluoroether rubber tube according to claim 5, characterized by The outer wall of one end of shielding pipe (8) in pipe sleeve section (1) is provided with a clearance groove (9), the inner wall of one end of pipe sleeve section (1) close to corrugated pipe section (2) is fixedly connected with a stop ring (10), the stop ring (10) is located in the clearance groove (9), and the clearance groove (9) is sleeved with a spring (11) abutting against the stop ring (10) and shielding pipe (8).

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