CN112228606A - Micro-pressure slotted rupture disk - Google Patents
Micro-pressure slotted rupture disk Download PDFInfo
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- CN112228606A CN112228606A CN202011192229.1A CN202011192229A CN112228606A CN 112228606 A CN112228606 A CN 112228606A CN 202011192229 A CN202011192229 A CN 202011192229A CN 112228606 A CN112228606 A CN 112228606A
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- pressure relief
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a micro-pressure slotted rupture disk, which comprises a lower reinforcing ring, a lower rupture disk assembly, a lower protective film, a sealing film, an upper protective film, an upper rupture disk assembly and an upper reinforcing ring which are sequentially overlapped from bottom to top; the lower rupture membrane assembly comprises a membrane I and a membrane II, the membrane II comprises a first round hole positioned in the center, a plurality of groups of second pressure relief seams which are outwards emitted are uniformly arranged on the membrane II around the first round hole, and the tail ends of the second pressure relief seams are provided with stop holes; the diaphragm I is a pressure sensitive element with a disc-shaped structure and is coaxially and fixedly arranged on an upper panel of the diaphragm II, first pressure relief seams which are corresponding to the second pressure relief seams and close to the circle center are uniformly arranged on the diaphragm I, and a blast hole is formed in one end, close to the circle center, of each first pressure relief seam; the upper blasting assembly and the lower blasting assembly are consistent in structure. According to the invention, the blasting pressure of the rupture disk is accurately controlled through the arrangement, the rigidity is good, the reliability is high, and the requirements of forward blasting, reverse blasting and the like can be realized.
Description
Technical Field
The invention belongs to the technical field of safe overpressure relief, and particularly relates to a micro-pressure slotted rupture disk.
Background
In recent years, with the stricter requirements on safety supervision, the number of rupture discs arranged in the micro-pressure occasions of the pressure vessels is increasing. The prior blasting piece produced in China can only select a common slotted type blasting piece for medium-large caliber, liquid medium and low-pressure occasions, adopts a through seam, and is shown in the attached figure 2 of the specification, or adopts a two-section seam structure blasting piece, such as Chinese patent publication No. CN 206072456U.
In the two prior arts, in the case of micropressure with caliber not less than DN300 and blasting pressure less than 0.005MPa, because of the limitation of material strength, the selected blasting film has the defects of thin thickness, small distance between blasting holes, high manufacturing difficulty, difficulty in controlling the blasting pressure value, easy damage to the diaphragm during assembly and disassembly and potential safety hazard to production and human body.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the micro-pressure slotted rupture disk, and the requirements of accurate control of the rupture disk on the burst pressure, good rigidity, high reliability, forward and reverse blasting and the like can be met by arranging the overlapping structure of the lower reinforcing ring, the lower blasting membrane component, the lower protective film, the sealing film, the upper protective film, the upper blasting membrane component and the upper reinforcing ring.
The specific implementation content of the invention is as follows:
the invention provides a micro-pressure slotted rupture disk, which comprises a lower reinforcing ring, a lower rupture disk assembly, a lower protective film, a sealing film, an upper protective film, an upper rupture disk assembly and an upper reinforcing ring which are sequentially overlapped from bottom to top;
the lower rupture disk assembly comprises a diaphragm I and a diaphragm II, the diaphragm II is of a circular ring sheet structure and comprises a first circular hole positioned in the center, a plurality of groups of second pressure relief seams which are outwards emitted are uniformly arranged on the diaphragm II around the first circular hole, and the tail ends of the second pressure relief seams are provided with stop holes;
the diaphragm I is a pressure sensitive element with a disc-shaped structure and is coaxially and fixedly arranged on an upper panel of the diaphragm II, and the diameter D3 of the diaphragm I is larger than the diameter D4 of the first round hole and smaller than the diameter D5 of a circle formed by a stop hole on the diaphragm II; first pressure relief seams which are corresponding to the second pressure relief seams and are close to the circle center are uniformly arranged on the diaphragm I, and a blasting hole is formed in one end, close to the circle center, of each first pressure relief seam;
the upper blasting assembly and the lower blasting assembly are consistent in structure.
In order to better realize the invention, further, the lower protective film is of a disk-shaped structure and comprises a third pressure relief seam and a plurality of groups of fourth pressure relief seams; the third pressure relief seam is a non-closed circle with the diameter of D8, and the fourth pressure relief seam is uniformly arranged around the third pressure relief seam in an outward divergence manner;
the diameter D8 of the third pressure relief seam is larger than the diameter D3 of the membrane I;
the diameter of a circle formed by the outer end point of the fourth pressure relief slit is D9, and the diameter D9 is smaller than the diameter D5;
the diameter D4 is more than or equal to D3-20, D5/2 is more than D3 is more than D5/4;
the lower protective film and the upper protective film are consistent in structure.
In order to better realize the invention, further, the thickness of the diaphragm I is S1, the thickness of the diaphragm II is S2, and 2S1 is less than or equal to S2.
In order to better implement the present invention, further, the number of the fourth pressure relief slits corresponds to the number of the second pressure relief slits, and the slits of the fourth pressure relief slits and the second pressure relief slits do not coincide.
In order to better implement the invention, an included angle between every two fourth pressure relief slits is a, and two ends of the circular shape of the third pressure relief slit which is not closed are respectively connected with two adjacent fourth pressure relief slit ends.
In order to better implement the invention, further, the diaphragm I and the diaphragm II are connected by spot welding or bonding;
when the connection is spot welding, corresponding welding spots are respectively arranged on the diaphragm I and the diaphragm II; the number of the welding points is N1; the diameter of a welding point on the diaphragm I is D6, the diameter of a welding point on the diaphragm II is D7, and the diameter D6= (D3+ D4)/2; d7= 1.5 to phi 2 mm; the number of the welding spots N1 is more than or equal to pi X D6/Y; y is a certain fixed value within 4-8 mm, and a specific value is selected according to actual requirements.
In order to better realize the invention, the number of the first pressure relief seams is N3, the angle a is less than or equal to 360/N3 mm, the diameter D8 is more than or equal to D3+ X mm, the diameter D9 is less than or equal to D5-X mm, X is a certain fixed value within the range of 10-20 mm, and a specific value is selected according to actual requirements.
In order to better implement the invention, further, the lower reinforcing ring and the upper reinforcing ring are respectively provided with an inner opening I and an inner opening II which are arranged in the center; the diameter of the inner opening I is D1, the diameter of the inner opening II is D2, the diameter D1= D2= D5+ Z, and Z is a certain determined value with a value range of 3-5 mm, and the specific selection is determined according to actual requirements.
In order to better implement the invention, further, the upper surface of the lower reinforcement ring and the lower surface of the upper reinforcement ring are respectively provided with a sealing surface I and a sealing surface II.
In order to better implement the invention, further, the lower reinforcing ring and the upper reinforcing ring are made of tetrafluoro material; the lower protective film, the upper protective film and the sealing film are made of polytetrafluoroethylene or fluorinated ethylene propylene.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the blasting pressure is accurately controlled. Because the thickness of the diaphragm for controlling the blasting pressure is thinner than that of the diaphragm used by a common type blasting sheet, the distance between the blasting holes is larger than that of the common type blasting sheet, the pressure dispersed on a unit area is smaller, and the pressure control is more accurate;
(2) good rigidity and high reliability. The thickness of the diaphragm I is at least 1 time thicker than that of the diaphragm II for controlling the blasting pressure, so that the overall rigidity of the blasting sheet is better than that of a common blasting sheet, the diaphragm is not easy to damage when being assembled and disassembled, and the product failure is avoided;
(3) can realize forward and reverse blasting. Because the upper and lower rupture disk assemblies have the same structure, the forward and reverse rupture pressure values are consistent.
Drawings
FIG. 1 is a front cross-sectional view of a rupture disk of the present invention;
FIG. 2 is a schematic view of a prior art rupture disk;
FIG. 3 is a top view of a lower rupture disk assembly;
FIG. 4 is a schematic view of a diaphragm I;
FIG. 5 is a schematic structural view of a diaphragm II;
fig. 6 is a schematic structural view of the lower protective film 3.
Wherein: 1. the lower reinforcing ring, 2, the lower blasting membrane assembly, 3, the lower protective membrane, 4-sealing membrane, 5, the upper protective membrane, 6, the upper blasting membrane assembly, 7, the upper reinforcing ring, 8, welding points, 11, sealing surfaces I, 12, inner openings I, 21, membranes I, 211, blasting holes, 212 first pressure relief seams, 22, membranes II, 221, second pressure relief seams, 222, stop holes, 223, first round holes, 71, sealing surfaces II, 72, inner openings II, 31, third pressure relief seams, 32 and fourth pressure relief seams.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and therefore should not be considered as a limitation to the scope of protection. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
the embodiment provides a micro-pressure slotted rupture disk, as shown in fig. 1, fig. 3, fig. 4, fig. 5 and fig. 6, comprising a lower reinforcing ring 1, a lower rupture disk assembly 2, a lower protective film 3, a sealing film 4, an upper protective film 5, an upper rupture disk assembly 6 and an upper reinforcing ring 7 which are sequentially overlapped from bottom to top;
the lower rupture disk assembly 2 comprises a disk I21 and a disk II 22, the disk II 22 is of a circular sheet structure and comprises a first circular hole 223 positioned in the center, a plurality of groups of second pressure relief seams 221 which are outwards emitted are uniformly arranged on the disk II 22 around the first circular hole 223, and the tail ends of the second pressure relief seams 221 are provided with stop holes 222;
the diaphragm I21 is a pressure sensitive element with a disc-shaped structure and is coaxially and fixedly mounted on the upper panel of the diaphragm II 22, and the diameter D3 of the diaphragm I21 is larger than the diameter D4 of the first round hole 223 and smaller than the diameter D5 of a circle formed by the stop hole 222 on the diaphragm II 22; first pressure relief slits 212 which are close to the center of a circle and correspond to the second pressure relief slits 221 are uniformly arranged on the diaphragm I21, and blasting holes 211 are formed in one ends, close to the center of the circle, of the first pressure relief slits 212;
the upper blasting component 6 and the lower blasting component 2 have the same structure.
The sealing surface I11 and the sealing surface II71 have good smoothness and parallelism, and play roles in strengthening rigidity and ensuring good sealing effect when the rupture disk is connected with a clamp or a flange.
The lower reinforcement ring 1 has an inner opening I12, the upper reinforcement ring 7 has an inner opening II 72, the inner opening I12 has an aperture D1, the inner opening II 72 has an aperture D2, the outer diameter of the diaphragm I21 is D3, the thickness is S1, the inner diameter of the diaphragm II 22 is D4, the outer diameter of the cut-off hole is D5, the thickness is S2, D1, D2, D3, D4, D5, S1, and S2 satisfy the following relationships: d1= D2= D5+ (3-5), D5/2> D3> D5/4, D4 is not less than D3-20, and S2 is not less than 2S 1.
The center diameter of the welding point 8 of the diaphragm I21 and the diaphragm II 22 is D6, the diameter of the welding point is D7, the number of the welding points is N1, D6, D7 and N1, and the following relations are satisfied: d6= (D3+ D4)/2, D7= 1.5 to phi 2, and N1 is not less than pi + D6/4 to 8.
The central part of the lower protective film 3 is provided with a third pressure relief slit 31, and the waist part of the lower protective film 3 is provided with six fourth pressure relief slits 32 with the same number as the second pressure relief slits 221 of the membrane II 22. The diameter of the third pressure relief slit 31 of the lower protective film 3 is D8, the included angle of the fourth pressure relief slit 32 is a, the diameter of the end stop is D9, the number of the pressure relief slits is N2, a, D8, D9 and N2, and the following relations are satisfied: a is not less than 360/N3, D8 is not less than D3+ 10-20, D9 is not less than D5-10-20, N2= N3, and N3 is the number of the second relief seams 212. The fourth pressure relief slit 32 is offset from the second pressure relief slit 221. Because two of the fourth pressure relief slits 34 are disposed at two ends of the third pressure relief slit 31, and six fourth pressure relief slits 32 are uniformly distributed on the third pressure relief slit 31, when the circle formed by the third pressure relief slit 31 is large enough, such as a 300 ° arc formed, it can be satisfied that the six fourth pressure relief slits 32 are uniformly distributed in a range of 360 °, and when the arc formed by the third pressure relief slit 31 is smaller than 300 °, the six fourth pressure relief slits 32 are uniformly distributed on the third pressure relief slit 31, and the angle a formed by the fourth pressure relief slits 32 between each two is smaller than 60 °.
The upper protective film 5 has the same structure as the lower protective film 3. The lower protective film 3 and the upper protective film 5 are not sealed and do not bear pressure, and the sealing film is prevented from being damaged by cutting edge burrs, welding burrs and the like at the cracking position of the rupture disk assembly.
Preferably, the lower reinforcing ring 1 and the upper reinforcing ring 7 are made of tetrafluoro material; the lower protective film 3, the upper protective film 5 and the sealing film 4 are made of polytetrafluoroethylene or fluorinated ethylene propylene.
The working principle is as follows: taking the system pressure entering from the direction of the lower reinforcement ring 1 as an example: in normal operation, the sealing film 4 of the rupture disk plays a sealing role. When the device is overpressurized, the diaphragm I21 and the diaphragm II 22 of the upper rupture disk assembly 6 deform with the increase of pressure until the material stretching limit is reached, and the sealing membrane 4 simultaneously deforms in a stretching manner until the rupture occurs. When the equipment is subjected to overpressure explosion, the sealing film 4 explodes, the inner hole I of the lower reinforcing ring 1, the explosion hole 211 of the diaphragm I21 of the lower explosion diaphragm assembly 2, the explosion hole 211 of the diaphragm I21 of the lower protective film 3, the upper protective film 5 and the upper explosion diaphragm assembly 6 and the inner hole II of the upper reinforcing ring 7 form a through overflow channel, pressure is released, and the equipment and personal safety are protected.
Example 2:
in this embodiment, on the basis of embodiment 1 above, in order to better implement the present invention, further, the lower rupture disk assembly 2 is provided with six first pressure relief slits 212 and six second pressure relief slits 221, the diameter D1= 305mm of the inner opening I11 of the lower reinforcement ring 1, the diameter D2= 305mm of the inner opening II71 of the upper reinforcement ring 7, the outer diameter of the diaphragm I11 is D3= 120 mm, the thickness is S1=0.05 mm, the inner diameter of the diaphragm II 22 is D4= 100 mm, the outer diameter of the stop hole is D5= 300mm, the thickness is S2=0.1 mm, the center diameter of the weld is D6= 110mm, the diameter of the weld is D7= 1.5 °, N1=60, the diameter D31 of the third pressure relief slit is D8= 140 mm, the center diameter of the weld is D6= 110mm, the diameter of the fourth pressure relief slit is D7= 290 mm, the fourth pressure relief slit 3630 a is provided with a fourth pressure relief slit 3630 ° and the fourth pressure relief slit 3630 = 30.
Other parts of this embodiment are the same as those of embodiment 1, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The micro-pressure slotted rupture disk is characterized by comprising a lower reinforcing ring (1), a lower rupture membrane assembly (2), a lower protective membrane (3), a sealing membrane (4), an upper protective membrane (5), an upper rupture membrane assembly (6) and an upper reinforcing ring (7) which are sequentially overlapped from bottom to top;
the lower blasting membrane assembly (2) comprises a membrane I (21) and a membrane II (22), the membrane II (22) is of a circular ring sheet-shaped structure and comprises a first round hole (223) located in the center, a plurality of groups of second pressure relief seams (221) which are outwards emitted are uniformly arranged on the membrane II (22) around the first round hole (223), and the tail ends of the second pressure relief seams (221) are provided with stop holes (222);
the diaphragm I (21) is a pressure sensitive element with a disc-shaped structure and is coaxially and fixedly mounted on an upper panel of the diaphragm II (22), and the diameter D3 of the diaphragm I (21) is larger than the diameter D4 of the first round hole (223) and smaller than the diameter D5 of a circle formed by a stop hole (222) on the diaphragm II (22); first pressure relief seams (212) which are corresponding to the second pressure relief seams (221) and close to the circle center are uniformly arranged on the diaphragm I (21), and blasting holes (211) are formed in one ends, close to the circle center, of the first pressure relief seams (212);
the upper blasting assembly (6) and the lower blasting assembly (2) are consistent in structure.
2. A rupture disc of the micro-pressure slitting type according to claim 1, wherein the lower protective film (3) is of a disc-like structure including a third pressure relief slit (31) and a plurality of sets of fourth pressure relief slits (32); the third pressure relief seam (31) is in a non-closed circular shape with the diameter D8, and the fourth pressure relief seam (32) is uniformly arranged around the third pressure relief seam (31) in a manner of diverging outwards;
the diameter D8 of the third pressure relief seam (31) is larger than the diameter D3 of the membrane I (21);
the diameter of a circle formed by the outer end point of the fourth pressure relief slit (32) is D9, and the diameter D9 is smaller than the diameter D5;
the diameter D4 is more than or equal to D3-20, D5/2 is more than D3 is more than D5/4;
the lower protective film (3) and the upper protective film (5) are consistent in structure.
3. The rupture disc of the micro-pressure slitting type as set forth in claim 2, wherein the thickness of the diaphragm I (21) is S1, the thickness of the diaphragm II (22) is S2, and 2S1 ≦ S2.
4. A rupture disc of the micro-pressure slotted type according to claim 2, wherein the number of the fourth pressure relief slots (32) corresponds to the number of the second pressure relief slots (221) and the slots thereof do not coincide.
5. A rupture disc of the micro-pressure slotting type as claimed in claim 3, wherein the included angle between every two fourth pressure relief slits (32) is an angle a, and the two ends of the unclosed circular third pressure relief slit (31) are respectively connected with the ends of two adjacent fourth pressure relief slits (32).
6. A rupture disc of the micro-pressure slotted type according to claim 2, wherein the diaphragm I (21) and the diaphragm II (22) are connected by spot welding or bonding;
when the connection is spot welding, corresponding welding spots (8) are respectively arranged on the diaphragm I (21) and the diaphragm II (22); the number of the welding points (8) is N1; the diameter of a welding point (8) on the diaphragm I (21) is D6, the diameter of a welding point (8) on the diaphragm II (22) is D7, and the diameter D6= (D3+ D4)/2; d7= 1.5 to phi 2 mm; the number of the welding spots N1 is more than or equal to pi X D6/Y; wherein Y is a certain fixed value within 4-8 mm, and a specific value is selected according to actual requirements.
7. The rupture disc of the micro-pressure slotting type as set forth in claim 5, wherein the number of the first pressure-relief slots (212) is N3, the angle a is less than or equal to 360/N3 mm, the diameter D8 is more than or equal to D3+ X mm, the diameter D9 is less than or equal to D5-X mm, wherein X is a fixed value within the range of 10-20 mm, and the specific value is selected according to actual requirements.
8. A rupture disc of the micro-pressure slotted type according to claim 1, wherein the lower reinforcement ring (1) and the upper reinforcement ring (7) have centrally disposed inner openings I (12) and II (72), respectively; the diameter of the inner port I (12) is D1, the diameter of the inner port II (72) is D2, the diameter D1= D2= D5+ Z, wherein Z is a certain determined value with a value range of 3-5 mm, and the specific selection is determined according to actual requirements.
9. A rupture disc of the micro-pressure slotted type according to claim 2, wherein the upper surface of the lower reinforcement ring (1) and the lower surface of the upper reinforcement ring (7) are provided with a sealing surface I (11) and a sealing surface II (71), respectively.
10. A rupture disc of the micro-pressure slotted type according to claim 1, wherein the lower reinforcement ring (1) and the upper reinforcement ring (7) are made of tetrafluoro material; the lower protective film (3), the upper protective film (5) and the sealing film (4) are made of polytetrafluoroethylene or fluorinated ethylene propylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011192229.1A CN112228606A (en) | 2020-10-30 | 2020-10-30 | Micro-pressure slotted rupture disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011192229.1A CN112228606A (en) | 2020-10-30 | 2020-10-30 | Micro-pressure slotted rupture disk |
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| Publication Number | Publication Date |
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| CN112228606A true CN112228606A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011192229.1A Pending CN112228606A (en) | 2020-10-30 | 2020-10-30 | Micro-pressure slotted rupture disk |
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| CN (1) | CN112228606A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066608A (en) * | 2022-03-09 | 2023-05-05 | 江苏拓米洛高端装备股份有限公司 | Pressure balance structure and environment test box |
-
2020
- 2020-10-30 CN CN202011192229.1A patent/CN112228606A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066608A (en) * | 2022-03-09 | 2023-05-05 | 江苏拓米洛高端装备股份有限公司 | Pressure balance structure and environment test box |
| CN116066608B (en) * | 2022-03-09 | 2023-11-24 | 江苏拓米洛高端装备股份有限公司 | Pressure balance structure and environment test box |
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