CN114738568A - Safety valve and pipeline connecting device - Google Patents
Safety valve and pipeline connecting device Download PDFInfo
- Publication number
- CN114738568A CN114738568A CN202210303161.2A CN202210303161A CN114738568A CN 114738568 A CN114738568 A CN 114738568A CN 202210303161 A CN202210303161 A CN 202210303161A CN 114738568 A CN114738568 A CN 114738568A
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- Prior art keywords
- flange
- fixing nut
- threaded rod
- safety valve
- connecting flange
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 40
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 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 4
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007787 solid Substances 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
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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
- 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
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- 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 pipeline and valve connection, and particularly relates to a safety valve and pipeline connecting 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 multi-point reinforced connection is carried out on the basic flange connection structure, the connection strength between the safety valve and the pipeline is improved to a greater extent, the nut is not easy to loosen, the structural 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 combination between the upper part and the lower part of the sealing element and the corresponding connection flange is tighter, 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 connecting device of a safety valve and a pipeline.
Background
The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety and equipment operation.
The flange connection mode is generally adopted between current relief valve and the steam conduit, generally lock solid with two flange joints through bolt and nut, though can satisfy relief valve installation demand to a certain extent, this fixed mode connection structure intensity is lower, at the too high or in-process that produces the pressure oscillation of steam conduit internal pressure, can make bolt and nut bear the sudden increase of pressure, easily make the nut drop in long-time use, cause the link to leak, and current relief valve connection structure's leakproofness is relatively poor, the possibility of pipeline leakage has been increased.
We have therefore proposed a safety valve and pipe connection to solve the above problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a connecting device of a safety valve and a pipeline, which solves the problems that the strength of the connecting structure of the conventional safety valve and a steam pipeline is low, the pressure borne by a bolt and a nut is suddenly increased in the process of overhigh pressure in the steam pipeline or pressure fluctuation, the nut is easy to fall off in the long-time use process, the connecting end is easy to leak, the sealing performance of the connecting structure of the conventional safety valve is poor, and the possibility of pipeline leakage is increased.
(II) technical scheme
The invention specifically adopts the following technical scheme for realizing the purpose:
the safety valve and pipeline connecting device 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, a first mounting hole and a second mounting hole are correspondingly formed in the first connecting flange and the second connecting flange, the first connecting flange and the second connecting flange are fixed in a locking mode through a locking connecting piece matched with the first mounting hole and the second mounting hole, and the first connecting flange and the second connecting flange are connected and sealed through a gasket sealing structure.
Further, the anti-loose connecting piece comprises an upper connecting plate, a first connecting threaded rod, a second connecting threaded rod, a lower connecting plate, a first fixing nut, a second fixing nut, a third fixing nut and a fourth fixing nut, wherein one end of the first connecting threaded rod and one end of the second connecting threaded rod are fixedly connected with the bottom of the upper connecting plate respectively, the second connecting threaded rod is arranged at the peripheral position of the first connecting threaded rod, the first connecting threaded rod is matched with the first mounting hole and the second mounting hole, the first fixing nut and the second fixing nut are in threaded fit with the first connecting threaded rod, the first connecting threaded rod penetrates through the first mounting hole and the second mounting hole in sequence and then locks the first connecting flange and the second connecting flange through the first fixing nut, the lower connecting plate is locked at the bottom of the first fixing nut through the second fixing nut, the third fixing nut and the fourth fixing nut correspond to each other up and down and are in threaded fit with the second connecting threaded rod The lower connecting plate is fixed on the second connecting threaded rod.
Furthermore, 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 ring structures.
Further, first connecting threaded rod and second connecting threaded rod parallel arrangement, and second connecting threaded rod and first flange and second flange are contactless state.
Furthermore, the anti-loose connecting piece also comprises a nut gasket, and the contact end surfaces of the first fixing nut, the second fixing nut, the third fixing nut and the fourth fixing nut are respectively provided with a nut gasket.
Further, the gasket sealing structure comprises a flange gasket and a sealing element, the sealing element is sleeved on an inner ring of the flange gasket, and the sealing element is embedded on the inner walls of the first connecting flange and the second connecting flange.
Furthermore, the sealing element comprises a connecting part, an upper embedding part and a lower embedding part, the upper embedding part, the connecting part and the lower embedding part are integrally connected from top to bottom, a clamping groove matched with the flange gasket is formed in the outer wall of the connecting part, a main air cavity is arranged inside the connecting part, sub air cavities communicated with the main air cavity through air channels are arranged inside the upper embedding part and the lower embedding part, and inert gases are filled inside the main air cavity and the sub air cavities.
Further, the sealing element is made of polytetrafluoroethylene.
(III) advantageous effects
Compared with the prior art, the invention provides a connecting device of a safety valve and a pipeline, which has the following beneficial effects:
1. according to the invention, through the matching arrangement of the safety valve body, the steam pipeline, the first connecting flange, the second connecting flange and the anti-loosening connecting piece, multipoint reinforced connection is carried out on the basic flange connecting structure, so that the connecting strength between the safety valve and the pipeline is improved to a greater extent, the nut is not easy to loosen, 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, and 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 flanges more tightly, and the sealing effect is better.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic structural view of the anti-loosening connector of the present invention;
FIG. 3 is a schematic structural view of a gasket seal structure according to the present invention;
fig. 4 is a partial structural view of the sealing member of the present invention.
In the figure: 1. a safety valve body; 2. a steam line; 3. a first connecting flange; 4. a second connecting flange; 5. a first mounting hole; 6. a second mounting hole; 7. a locking connector; 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 member; 8021. a connecting portion; 8022. an upper embedding part; 8023. a lower embedding part; 8024. a card slot; 8025. a main air cavity; 8026. a gas channel; 8027. and a sub air cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1-4, a safety valve and pipe connection device according to an embodiment of the present invention includes a safety valve body 1 and a steam pipe 2, the safety valve body 1 is provided with a steam inlet, the steam inlet is provided with a first connecting flange 3, the steam pipe 2 is provided with a discharge outlet, the discharge outlet is provided with a second connecting flange 4 matching with the first connecting flange 3, the first connecting flange 3 and the second connecting flange 4 are correspondingly provided with a first mounting hole 5 and a second mounting hole 6, the first connecting flange 3 and the second connecting flange 4 are fixed in an anti-loosening manner by an anti-loosening connecting piece 7 matching 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 by a specially designed anti-loosening connecting piece 7, which has an excellent anti-loosening effect, the first connecting flange 3 and the second connecting flange 4 are connected and sealed by a gasket sealing structure 8, through the design of gasket seal structure 8, can guarantee the leakproofness of first flange 3 and 4 link of second flange, avoid leading to the link to produce the clearance when the pressure is too high in the pipeline even surpasss regulation value or pressure fluctuation, cause the pipeline to leak.
In the above embodiments, it should be noted that the safety valve body 1 is used for a steam pipeline as an example in the present invention, but the safety valve and pipeline connecting device is not limited to be used for a boiler pipeline, and can be used for any valve and pipeline connection.
As shown in fig. 1 and 2, in some embodiments, the anti-loose connector 7 includes 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, where one end of each of the first connecting threaded rod 702 and the second connecting threaded rod 703 is fixedly connected to the bottom of the upper connecting plate 701, and the connection may be welding or other fixed connection; 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 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 penetrates through the first mounting hole 5 and the second mounting hole 6 in sequence 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, and 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; the first fixing nut 705 is used for locking the first connecting flange 3 and the second connecting flange 4, which is a flange fixing method commonly used in the prior art, but in the long-term use process of the connecting structure, due to the factors of pressure rise in the pipeline, frequent fluctuation of pressure in the pipeline, and the like, the first fixing nut 705 is easy to loosen, bolts fall off, and safety of a pipeline system is affected, so that the traditional connecting structure is optimized in the embodiment, when the connecting structure is specifically applied, the first connecting threaded rod 702 is correspondingly inserted into the first mounting hole 5 and the second mounting hole 6 on the first connecting flange 3 and the second connecting flange 4, the upper connecting plate 701 covers and presses the first connecting flange 3, the first connecting flange 3 and the second connecting flange 4 are connected and fixed through the first fixing nut 705, on the basis, the third fixing nut 707 is adjusted upwards in advance, and 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 inserted into 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 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 in position by matching with the third fixing nut 707, the lower connecting plate 704 is kept in a horizontal state, under the action of the second fixing nut 706, the third fixing nut 707 and the fourth fixing nut 708, the lower connecting plate 704 can always keep the first fixing nut 705 in a compressed state without pre-falling, and therefore, the connecting strength of the first connecting flange 3 and the second connecting flange 4 is remarkably improved, overall connection structural stability is better, and because be the fixed connection relation between first connecting threaded rod 702 and second connecting threaded rod 703 and the upper junction plate 701, consequently when fixed first connecting flange 3 and second connecting flange 4, can once only insert first connecting threaded rod 702 in corresponding first mounting hole 5 and second mounting hole 6, reach the purpose that improves relief valve installation effectiveness.
As shown in fig. 1 and 2, in some embodiments, in order to ensure the reliability of the connection end, the upper connection plate 701 and the lower connection plate 704 are 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 easy to assemble, all set up upper junction plate 701 and lower connecting plate 704 to constitute the structure by two semicircle ring structural concatenations, accessible bolt is fixed between two semicircle ring structures, also can only keep the butt joint state, and this kind of structure is convenient fixes connecting threaded rod on upper junction plate 701 in advance, has the convenience of equipment.
As shown in fig. 1 and 2, in some embodiments, the first connecting threaded rod 702 is disposed in parallel with the second connecting threaded rod 703, 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 first connecting threaded rod 702 is mainly arranged to be matched with the first fixing nut 705 to play a role in fixing the first connecting flange 3 and the second connecting flange 4, the second connecting threaded rod 703 is mainly used for compressing the first fixing nut 705, and meanwhile, the first connecting flange 3 and the second connecting flange 4 can be strengthened to be connected and fixed, and the outer end of the lower connecting plate 704 is fixed without the condition that the first connecting flange 3 and the second connecting flange 4 are in contact.
As shown in fig. 1 and 2, in some embodiments, the anti-loose connection 7 further includes a nut washer 709, and 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 distributing one nut washer 709 to each fixation nut, the contact area of the fixation nut can be increased, and the stress is 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 disposed on an inner ring of the flange gasket 801, and the sealing member 802 is embedded on inner walls of the first connecting flange 3 and the second connecting flange 4; the flange gasket 801 is provided to function as a flange seal, and the sealing material 802 is provided around the flange gasket 801 to further improve the sealing performance of the flange connection by the sealing material 802.
As shown in fig. 4, in some embodiments, the sealing element 802 includes a connecting portion 8021, an upper embedded portion 8022 and a lower embedded portion 8023, the upper embedded portion 8022, the connecting 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 disposed on an outer wall of the connecting portion 8021, a main air cavity 8025 is disposed inside the connecting portion 8021, sub air cavities 8027 communicated with the main air cavity 8025 through air channels 8026 are disposed inside the upper embedded portion 8022 and the lower embedded portion 8023, and inert gases are filled in the main air cavity 8025 and the sub air cavities 8027; the connecting portion 8021, the upper embedding portion 8022 and the lower embedding portion 8023 form a sealing element 802, the sealing element 802 is connected to the inner annular surface of the flange gasket 801 in a clamping sleeve mode, assembly is facilitated, the upper embedding portion 8022 and the lower embedding portion 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 enabled to be tightly combined, the main air cavity 8025 is arranged on the connecting portion 8021, the sub air cavity 8027 communicated with the main air cavity 8025 is arranged inside the upper embedding portion 8022 and the lower embedding portion 8023, when the pressure in the steam pipeline 2 is too high, the main air cavity 8025 is compressed, air in the main air cavity 8025 enters the sub air cavity 8027 through the air passages 8026, the upper embedding portion 8022 and the lower embedding portion 8023 can generate certain expansion deformation, and the sealing element is enabled to be tightly combined with the first connecting flange 3 and the second connecting flange 4.
In some embodiments, the seal 802 is made of polytetrafluoroethylene; the sealing element 802 made of polytetrafluoroethylene has excellent high temperature, low temperature, corrosion and weather resistance, and low surface tension, so that the sealing element 802 does not adhere to any substance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
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 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), the first connecting flange (3) and the second connecting flange (4) are fixed in a locking mode through a locking connecting piece (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).
2. A safety valve and pipe connection as claimed in claim 1, wherein: 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), and the first connecting threaded rod (702) penetrates through the first mounting hole (5) and the second mounting hole (6) in sequence and then connects a first connecting flange (3) through the first fixing nut (705) The lower connecting plate is locked with a second connecting flange (4), the lower connecting plate (704) is locked and fixed at the bottom of a first fixing nut (705) through a second fixing nut (706), and a third fixing nut (707) and a fourth fixing nut (708) correspond to each other up and down and are in threaded fit with a second connecting threaded rod (703) to fix the lower connecting plate (704) on the second connecting threaded rod (703).
3. A safety valve and pipe connection as claimed in claim 2, wherein: 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 rings.
4. A safety valve and pipe connection as claimed in claim 2, wherein: 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).
5. A safety valve and pipe connection as claimed in claim 2, wherein: the anti-loosening connecting piece (7) further comprises a nut gasket (709), and the contact end faces 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 one nut gasket (709).
6. A safety valve and pipe connection as claimed in claim 1, wherein: the gasket sealing structure (8) comprises a flange gasket (801) and a sealing element (802), the sealing element (802) is sleeved on an inner ring of the flange gasket (801), and the sealing element (802) is embedded on inner walls of the first connecting flange (3) and the second connecting flange (4).
7. A safety valve and pipe connection as claimed in claim 6, wherein: the sealing element (802) comprises a connecting part (8021), an upper embedding part (8022) and a lower embedding part (8023), the upper embedding part (8022), the connecting part (8021) and the lower embedding part (8023) are integrally connected from top to bottom, a clamping groove (8024) matched with a flange gasket (801) is formed in the outer wall of the connecting part (8021), a main air cavity (8025) is arranged in the connecting part (8021), sub air cavities (8027) communicated with the main air cavity (8025) through air channels (8026) are arranged in the upper embedding part (8022) and the lower embedding part (8023), and inert gas is filled in the main air cavity (8025) and the sub air cavities (8027).
8. A safety valve and pipe connection as claimed in claim 1, wherein: the sealing element (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 true CN114738568A (en) | 2022-07-12 |
| CN114738568B CN114738568B (en) | 2023-06-20 |
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| 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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| CN (1) | CN114738568B (en) |
Citations (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 |
| CN105418987A (en) * | 2015-10-30 | 2016-03-23 | 宁波凌珂新材料科技有限公司 | Material receiving apparatus for easily oxidized powder |
| WO2017032573A1 (en) * | 2015-08-21 | 2017-03-02 | Technische Universität München | Electrically insulating flanged joint and flanged joint insulating ring |
| 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 |
| 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 |
| 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 |
-
2022
- 2022-03-24 CN CN202210303161.2A patent/CN114738568B/en active Active
Patent Citations (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 |
| WO2017032573A1 (en) * | 2015-08-21 | 2017-03-02 | Technische Universität München | Electrically insulating flanged joint and flanged joint insulating ring |
| CN105418987A (en) * | 2015-10-30 | 2016-03-23 | 宁波凌珂新材料科技有限公司 | Material receiving apparatus for easily oxidized 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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