CN114738568B - Safety valve and pipeline connecting device - Google Patents
Safety valve and pipeline connecting device Download PDFInfo
- Publication number
- CN114738568B CN114738568B CN202210303161.2A CN202210303161A CN114738568B CN 114738568 B CN114738568 B CN 114738568B CN 202210303161 A CN202210303161 A CN 202210303161A CN 114738568 B CN114738568 B CN 114738568B
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- flange
- threaded rod
- fixing nut
- connection
- connecting flange
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L17/00—Joints with packing adapted to sealing by fluid pressure
- F16L17/06—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges
- F16L17/067—Plastics sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
- F16B39/101—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a plate, spring, wire or ring holding two or more nuts or bolt heads which are mainly in the same plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Valve Housings (AREA)
Abstract
The invention belongs to the technical field of connection of pipelines and valves, and particularly relates to a safety valve and pipeline connection device which comprises a safety valve body and a steam pipeline, wherein a steam inlet is formed in the safety valve body, a first connecting flange is arranged on the steam inlet, a discharge port is formed in the steam pipeline, a second connecting flange matched with the first connecting flange is arranged on the discharge port, and a first mounting hole and a second mounting hole are correspondingly formed in the first connecting flange and the second connecting flange. According to the invention, the multipoint reinforcing connection is carried out on the basic flange connection structure, so that the connection strength between the safety valve and the pipeline is improved to a greater extent, the nut is not easy to loosen, the structure stability is good, the connection is reliable, the middle part of the sealing element is compressed by utilizing the high pressure in the pipeline, the upper part and the lower part of the sealing element are promoted to expand, the upper part and the lower part of the sealing element are further combined with the corresponding connecting flange more tightly, and the sealing effect is better.
Description
Technical Field
The invention relates to the technical field of connection of pipelines and valves, in particular to a safety valve and pipeline connection device.
Background
The safety valve is a special valve which is in a normally closed state under the action of external force and prevents the medium pressure in the pipeline or the equipment from exceeding a specified value by discharging the medium to the outside of the system when the medium pressure in the equipment or the pipeline rises to exceed the specified value. The safety valve belongs to automatic valves, and is mainly used for boilers, pressure vessels and pipelines, and the control pressure does not exceed a specified value, so that the safety valve plays an important role in protecting personal safety and equipment operation.
The existing safety valve and the steam pipeline are generally connected by adopting a flange connection mode, and the two butt flanges are generally locked through bolts and nuts, so that the installation requirement of the safety valve can be met to a certain extent, but the strength of the connection structure of the fixing mode is lower, the bolts and the nuts can bear pressure surge in the process of overhigh pressure or pressure fluctuation in the steam pipeline, the nuts are easy to fall off in the long-time use process, the connection end is leaked, the tightness of the existing safety valve connection structure is poor, and the possibility of pipeline leakage is increased.
Therefore, we propose a safety valve and pipeline connecting device to solve the above problems.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a connecting device for a safety valve and a pipeline, which solves the problems that the strength of the connecting structure of the existing safety valve and a steam pipeline is low, the pressure of a bolt and a nut is suddenly increased in the process of overhigh pressure or pressure fluctuation in the steam pipeline, the nut is easy to fall off in the long-time use process, the connecting end is leaked, the sealing performance of the connecting structure of the existing safety valve is poor, and the possibility of pipeline leakage is increased.
(II) technical scheme
The invention adopts the following technical scheme for realizing the purposes:
the utility model provides a relief valve and pipeline connecting device, includes relief valve body and steam pipe, be provided with the steam inlet on the relief valve body, be provided with first flange on the steam inlet, be equipped with the discharge port on the steam pipe, be provided with on the discharge port with first flange assorted second flange, correspond on first flange and the second flange and be equipped with first mounting hole and second mounting hole, carry out locking fixedly through the locking connecting piece with first mounting hole and second mounting hole looks adaptation between first flange and the second flange, connect sealedly through gasket seal structure between first flange and the second flange.
Further, the locking connecting piece includes upper junction plate, first connection threaded rod, second connection threaded rod, lower connecting plate, first fixation nut, second fixation nut, third fixation nut and fourth fixation nut, the one end of first connection threaded rod and second connection threaded rod respectively with upper junction plate bottom fixed connection, and the second connection threaded rod sets up in the peripheral position of first connection threaded rod, first connection threaded rod and first mounting hole and second mounting hole phase-match, first fixation nut and second fixation nut and first connection threaded rod screw-thread fit, first connection threaded rod is locked first flange and second flange through first fixation nut after running through first mounting hole and second mounting hole in proper order, the lower connection plate passes through the bottom of second fixation nut lock in first fixation nut, third fixation nut and fourth fixation nut correspond from top to bottom and be fixed in on the second connection threaded rod with second connection threaded rod screw-thread fit with lower connection plate.
Further, the upper connecting plate and the lower connecting plate are arranged in parallel, and the upper connecting plate and the lower connecting plate are formed by splicing two semicircular structures.
Further, the first connecting threaded rod and the second connecting threaded rod are arranged in parallel, and the second connecting threaded rod is in a non-contact state with the first connecting flange and the second connecting flange.
Further, the anti-loosening connecting piece further comprises nut gaskets, and the first fixing nut, the second fixing nut, the third fixing nut and the fourth fixing nut are respectively provided with one nut gasket on the contact end surfaces.
Further, the gasket sealing structure comprises a flange gasket and a sealing piece, wherein the sealing piece is sleeved on the inner ring of the flange gasket, and the sealing piece is embedded on the inner walls of the first connecting flange and the second connecting flange.
Further, the sealing member includes connecting portion, upper embedded portion and lower embedded portion, upper embedded portion, connecting portion and lower embedded portion top-down body coupling, be equipped with the draw-in groove with flange gasket looks adaptation on the outer wall of connecting portion, the inside of connecting portion is equipped with main air cavity, the inside of upper embedded portion and lower embedded portion all is equipped with the sub-air cavity that communicates with main air cavity through gas passage, main air cavity and sub-air cavity are inside to all to be filled with inert gas.
Further, the sealing element is made of polytetrafluoroethylene.
(III) beneficial effects
Compared with the prior art, the invention provides a safety valve and pipeline connecting device, which has the following beneficial effects:
1. according to the invention, through the matching arrangement among the safety valve body, the steam pipeline, the first connecting flange, the second connecting flange and the anti-loosening connecting piece, the multipoint reinforcing connection is carried out on the basic flange connecting structure, so that the connection strength between the safety valve and the pipeline is improved to a greater extent, the loosening of nuts is not easy to cause, the structural stability is good, and the connection is reliable.
2. According to the invention, the gasket sealing structure is arranged between the first connecting flange and the second connecting flange, the middle part of the sealing element is compressed by utilizing high pressure in the pipeline, so that the upper part and the lower part of the sealing element are expanded, the upper part and the lower part of the sealing element are combined with the corresponding connecting flange more tightly, and the sealing effect is better.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the anti-loosening connecting piece according to the present invention;
FIG. 3 is a schematic view of a gasket seal structure according to the present invention;
fig. 4 is a schematic view of a part of the structure of the seal member of the present invention.
In the figure: 1. a safety valve body; 2. a steam pipe; 3. a first connection flange; 4. a second connection flange; 5. a first mounting hole; 6. a second mounting hole; 7. an anti-loosening connecting piece; 701. an upper connecting plate; 702. a first connecting threaded rod; 703. a second connecting threaded rod; 704. a lower connecting plate; 705. a first fixing nut; 706. a second fixing nut; 707. a third fixing nut; 708. a fourth fixing nut; 709. a nut washer; 8. a gasket sealing structure; 801. a flange gasket; 802. a seal; 8021. a connection part; 8022. an upper embedding part; 8023. a lower embedded part; 8024. a clamping groove; 8025. a main air cavity; 8026. a gas channel; 8027. a sub-air chamber.
Detailed Description
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.
Examples
As shown in fig. 1-4, the safety valve and pipeline connecting device provided by one embodiment of the invention comprises a safety valve body 1 and a steam pipeline 2, wherein a steam inlet is arranged on the safety valve body 1, a first connecting flange 3 is arranged on the steam inlet, a discharge port is arranged on the steam pipeline 2, a second connecting flange 4 matched with the first connecting flange 3 is arranged on the discharge port, a first mounting hole 5 and a second mounting hole 6 are correspondingly arranged on the first connecting flange 3 and the second connecting flange 4, the first connecting flange 3 and the second connecting flange 4 are fixed in a locking manner through a locking connecting piece 7 matched with the first mounting hole 5 and the second mounting hole 6, the first connecting flange 3 and the second connecting flange 4 are fixed through a locking connecting piece 7 with special design, an excellent locking effect is achieved, the sealing performance of the first connecting flange 3 and the second connecting flange 4 through a gasket sealing structure 8 is guaranteed, and the sealing performance of the connecting ends of the first connecting flange 3 and the second connecting flange 4 can be guaranteed, and the pipeline can be prevented from being leaked when the pressure exceeds a specified value or even the pressure exceeds a specified value.
In the above embodiment, the present invention is exemplified by using the safety valve body 1 for the steam pipe, but the safety valve and pipe connection device is not limited to the boiler pipe, and can be used for any valve and pipe connection.
As shown in fig. 1 and 2, in some embodiments, the locking connection 7 includes an upper connection plate 701, a first connection threaded rod 702, a second connection threaded rod 703, a lower connection plate 704, a first fixing nut 705, a second fixing nut 706, a third fixing nut 707, and a fourth fixing nut 708, where one ends of the first connection threaded rod 702 and the second connection threaded rod 703 are fixedly connected to the bottom of the upper connection plate 701, respectively, and the connection manner may be welding or other fixed connection manners; the second connecting threaded rod 703 is disposed at the peripheral position of the first connecting threaded rod 702, the first connecting threaded rod 702 is matched with the first mounting hole 5 and the second mounting hole 6, the first fixing nut 705 and the second fixing nut 706 are in threaded fit with the first connecting threaded rod 702, the first connecting threaded rod 702 sequentially penetrates through the first mounting hole 5 and the second mounting hole 6 and then locks the first connecting flange 3 and the second connecting flange 4 through the first fixing nut 705, the lower connecting plate 704 is locked at the bottom of the first fixing nut 705 through the second fixing nut 706, the third fixing nut 707 and the fourth fixing nut 708 vertically correspond to each other and are in threaded fit with the second connecting threaded rod 703 to fix the lower connecting plate 704 on the second connecting threaded rod 703; the locking of the first connection flange 3 and the second connection flange 4 by the first fixing nut 705 is a flange fixing mode commonly adopted in the prior art, but in the long-term use process of the connection structure, under the factors of rising pressure in a pipeline, frequent fluctuation of pressure in the pipeline and the like, the first fixing nut 705 is easy to loosen, so that bolts fall off to influence the safety of a pipeline system, therefore, in the embodiment, the traditional connection structure is optimized, when the connection structure is specifically applied, the first connection threaded rod 702 is correspondingly inserted into the first mounting hole 5 and the second mounting hole 6 on the first connection flange 3 and the second connection flange 4, the upper connection plate 701 is covered and pressed on the first connection flange 3, the first connection flange 3 and the second connection flange 4 are connected and fixed by the first fixing nut 705, and on the basis, the third fixing nut 707 is adjusted in advance, the lower connecting plate 704 is pressed at the bottom of the first fixing nut 705, the lower connecting plate 704 is fixed on the first connecting threaded rod 702 through the second fixing nut 706, at this time, the outer end of the lower connecting plate 704 is in a penetrating relation with the second connecting threaded rod 703, the third fixing nut 707 is screwed, the third fixing nut 707 is lowered to the same height as the first fixing nut 705, namely, the bottom end contact surface of the third fixing nut 707 is contacted with the top surface of the lower connecting plate 704, finally, the fourth fixing nut 708 is screwed in from the bottom end of the second connecting threaded rod 703, the outer end of the lower connecting plate 704 is fixed by matching with the third fixing nut 707, so that the lower connecting plate 704 is kept in a horizontal state, the pressing state of the lower connecting plate 704 can be kept all the time to the first fixing nut 705 under the action of the second fixing nut 706, the third fixing nut 707 and the fourth fixing nut 708, and the lower connecting plate 704 cannot fall off in advance, therefore, the connection strength of the first connection flange 3 and the second connection flange 4 is remarkably improved, the stability of the whole connection structure is better, and because the first connection threaded rod 702, the second connection threaded rod 703 and the upper connection plate 701 are in a fixed connection relationship, when the first connection flange 3 and the second connection flange 4 are fixed, the first connection threaded rod 702 can be inserted into the corresponding first mounting hole 5 and second mounting hole 6 at one time, so that the purpose of improving the mounting efficiency of the safety valve is achieved.
As shown in fig. 1 and 2, in some embodiments, to ensure the reliability of the connection end, the upper connection plate 701 and the lower connection plate 704 need to be parallel up and down, and then the lower connection plate 704 can be smoothly sleeved on a connection threaded rod 702 and a second connection threaded rod 703; for convenient installation, the upper connecting plate 701 and the lower connecting plate 704 are all arranged to be spliced to form a structure by two semicircular structures, the two semicircular structures can be fixed through bolts, and the butt joint state can be kept only.
As shown in fig. 1 and 2, in some embodiments, the first connection threaded rod 702 is disposed parallel to the second connection threaded rod 703, and the second connection threaded rod 703 is in a non-contact state with the first connection flange 3 and the second connection flange 4; the first connecting threaded rod 702 is mainly matched with the first fixing nut 705 to fix the first connecting flange 3 and the second connecting flange 4, the second connecting threaded rod 703 is mainly used for pressing the first fixing nut 705, and meanwhile, the first connecting flange 3 and the second connecting flange 4 are reinforced to be connected and fixed, and the outer end of the lower connecting plate 704 is fixed under the condition that the first connecting flange 3 and the second connecting flange 4 are not required to be contacted.
As shown in fig. 1 and 2, in some embodiments, the locking connection 7 further includes a nut washer 709, where one nut washer 709 is disposed on each of the contact end surfaces of the first fixing nut 705, the second fixing nut 706, the third fixing nut 707, and the fourth fixing nut 708; by assigning one nut spacer 709 to each fixation nut, the fixation nut contact area can be increased, and the stress can be more uniform.
As shown in fig. 3, in some embodiments, the gasket sealing structure 8 includes a flange gasket 801 and a sealing member 802, the sealing member 802 is sleeved on an inner ring of the flange gasket 801, and the sealing member 802 is embedded on inner walls of the first connection flange 3 and the second connection flange 4; the flange gasket 801 can function as a flange seal, and the sealing member 802 is provided in the inner ring of the flange gasket 801, so that the sealing property of the flange connection is further improved by the sealing member 802.
As shown in fig. 4, in some embodiments, the sealing member 802 includes a connection portion 8021, an upper embedded portion 8022 and a lower embedded portion 8023, the upper embedded portion 8022, the connection portion 8021 and the lower embedded portion 8023 are integrally connected from top to bottom, a clamping groove 8024 adapted to the flange gasket 801 is arranged on the outer wall of the connection portion 8021, a main air cavity 8025 is arranged in the connection portion 8021, sub air cavities 8027 communicated with the main air cavity 8025 through air channels 8026 are arranged in the upper embedded portion 8022 and the lower embedded portion 8023, and inert gas is filled in the main air cavity 8025 and the sub air cavity 8027; the sealing element 802 is composed of the connecting part 8021, the upper embedded part 8022 and the lower embedded part 8023, the sealing element 802 is connected to the inner ring surface of the flange gasket 801 in a clamping sleeve mode, assembly is more convenient, the upper embedded part 8022 and the lower embedded part 8023 are respectively embedded into the first connecting flange 3 and the second connecting flange 4, the contact area of the sealing element 802 and the connecting flange is integrally increased, the sealing element 802 and the connecting flange are tightly combined, the main air cavity 8025 is arranged at the connecting part 8021, the sub air cavity 8027 communicated with the main air cavity 8025 is arranged inside the upper embedded part 8022 and the lower embedded part 8023, when the pressure in the steam pipeline 2 is too high, the main air cavity 8025 is compressed, gas in the main air cavity 8025 enters the sub air cavity 8027 through the gas channel 8026, and the upper embedded part 8022 and the lower embedded part 8023 can generate certain expansion deformation, so that the sealing element is tightly combined with the first connecting flange 3 and the second connecting flange 4.
In some embodiments, seal 802 is made of polytetrafluoroethylene; the seal 802, which is made of polytetrafluoroethylene, has excellent high and low temperature resistance, corrosion resistance and weather resistance, and has a low surface tension so that the seal 802 does not adhere to any substance.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides a relief valve and pipeline connecting device, includes relief valve body (1) and steam conduit (2), its characterized in that: the safety valve comprises a safety valve body (1), and is characterized in that a steam inlet is formed in the safety valve body (1), a first connecting flange (3) is arranged on the steam inlet, a discharge port is formed in the steam pipeline (2), a second connecting flange (4) matched with the first connecting flange (3) is arranged on the discharge port, a first mounting hole (5) and a second mounting hole (6) are correspondingly formed in the first connecting flange (3) and the second connecting flange (4), locking and fixing are carried out between the first connecting flange (3) and the second connecting flange (4) through locking connectors (7) matched with the first mounting hole (5) and the second mounting hole (6), and the first connecting flange (3) and the second connecting flange (4) are connected and sealed through a gasket sealing structure (8);
the anti-loosening connecting piece (7) comprises an upper connecting plate (701), a first connecting threaded rod (702), a second connecting threaded rod (703), a lower connecting plate (704), a first fixing nut (705), a second fixing nut (706), a third fixing nut (707) and a fourth fixing nut (708), one ends of the first connecting threaded rod (702) and the second connecting threaded rod (703) are fixedly connected with the bottom of the upper connecting plate (701) respectively, the second connecting threaded rod (703) is arranged at the peripheral position of the first connecting threaded rod (702), the first connecting threaded rod (702) is matched with a first mounting hole (5) and a second mounting hole (6), the first fixing nut (705) and the second fixing nut (706) are in threaded fit with the first connecting threaded rod (702), the first connecting threaded rod (702) sequentially penetrates through the first mounting hole (5) and the second mounting hole (6) and then is fixedly connected with the second connecting flange (4) through the first fixing nut (705), the lower connecting plate (704) is fixedly connected with the first connecting flange (705) through the first fixing nut (705), the third fixing nut (707) and the fourth fixing nut (708) correspond to each other up and down and are in threaded fit with the second connecting threaded rod (703) to fix the lower connecting plate (704) on the second connecting threaded rod (703);
the upper connecting plate (701) and the lower connecting plate (704) are arranged in parallel, and the upper connecting plate (701) and the lower connecting plate (704) are formed by splicing two semicircular structures;
the first connecting threaded rod (702) and the second connecting threaded rod (703) are arranged in parallel, and the second connecting threaded rod (703) is in a non-contact state with the first connecting flange (3) and the second connecting flange (4);
the anti-loosening connecting piece (7) further comprises a nut gasket (709), wherein the contact end surfaces of the first fixing nut (705), the second fixing nut (706), the third fixing nut (707) and the fourth fixing nut (708) are respectively provided with the nut gasket (709);
the gasket sealing structure (8) comprises a flange gasket (801) and a sealing piece (802), wherein the sealing piece (802) is sleeved on the inner ring of the flange gasket (801), and the sealing piece (802) is embedded on the inner walls of the first connecting flange (3) and the second connecting flange (4);
sealing member (802) are including connecting portion (8021), upper embedded portion (8022) and lower embedded portion (8023), upper embedded portion (8022), connecting portion (8021) and lower embedded portion (8023) top-down an organic whole connect, be equipped with draw-in groove (8024) with flange gasket (801) looks adaptation on the outer wall of connecting portion (8021), the inside of connecting portion (8021) is equipped with main air cavity (8025), the inside of upper embedded portion (8022) and lower embedded portion (8023) all is equipped with sub-air cavity (8027) that communicate with main air cavity (8025) through gas passage (8026), the inside inert gas that all is filled of main air cavity (8025) and sub-air cavity (8027).
2. A safety valve and conduit connection according to claim 1, wherein: the seal (802) is made of polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210303161.2A CN114738568B (en) | 2022-03-24 | 2022-03-24 | Safety valve and pipeline connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210303161.2A CN114738568B (en) | 2022-03-24 | 2022-03-24 | Safety valve and pipeline connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114738568A CN114738568A (en) | 2022-07-12 |
| CN114738568B true CN114738568B (en) | 2023-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210303161.2A Active CN114738568B (en) | 2022-03-24 | 2022-03-24 | Safety valve and pipeline connecting device |
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| Country | Link |
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| CN (1) | CN114738568B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4155571A (en) * | 1975-06-10 | 1979-05-22 | United Aircraft Products, Inc. | Sealing member and retainer assembly for sealing non-grooved joints |
| DE102015216035A1 (en) * | 2015-08-21 | 2017-02-23 | Technische Universität München | Electrically insulating flange connection and flange connection insulating ring |
| CN105418987B (en) * | 2015-10-30 | 2017-12-26 | 宁波凌珂新材料科技有限公司 | Material-receiving device for oxidizable powder |
| CN210290744U (en) * | 2019-08-07 | 2020-04-10 | 深圳市广裕丰橡胶制品有限公司 | Waterproof silica gel pad for household electrical appliances |
| CN211693529U (en) * | 2019-12-16 | 2020-10-16 | 河北莫申科技有限公司 | Nuclear industry high-risk door intelligent monitoring guarantee inflatable seal ring equipment |
| CN211951447U (en) * | 2020-03-02 | 2020-11-17 | 浙江华星阀业有限公司 | Dual self sealss electric stop valve |
| CN212745232U (en) * | 2020-06-23 | 2021-03-19 | 大连埃斯流体技术有限公司 | Corrugated pipe regulating valve |
| CN213064991U (en) * | 2020-09-09 | 2021-04-27 | 温州市海龙管件有限公司 | Flange for pipeline |
| CN215568691U (en) * | 2021-03-10 | 2022-01-18 | 苏州市诚键法兰制造有限公司 | Low temperature resistant stainless steel flange easy to assemble |
| CN215217697U (en) * | 2021-07-23 | 2021-12-17 | 江苏爱尔数字科技有限公司 | Anti-impact sealed camera shooting water meter |
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- 2022-03-24 CN CN202210303161.2A patent/CN114738568B/en active Active
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| CN114738568A (en) | 2022-07-12 |
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