CN113833985A - Explosion-proof assembly for pressure container - Google Patents
Explosion-proof assembly for pressure container Download PDFInfo
- Publication number
- CN113833985A CN113833985A CN202111077869.2A CN202111077869A CN113833985A CN 113833985 A CN113833985 A CN 113833985A CN 202111077869 A CN202111077869 A CN 202111077869A CN 113833985 A CN113833985 A CN 113833985A
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- China
- Prior art keywords
- pressure
- explosion
- pressure relief
- relief pipe
- tank
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- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
- F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
Abstract
The invention relates to the technical field of container explosion prevention, and discloses an explosion-proof assembly for a pressure container, which comprises a pressure tank and a pressure relief pipe, wherein the pressure relief pipe is fixedly installed at the top of the pressure tank, a pressure resisting plate is movably sleeved at the bottom of an inner cavity of the pressure relief pipe, a first side pressure box is fixedly installed on the right side of the pressure relief pipe, and a second side pressure box is fixedly installed on the left side of the pressure relief pipe. Through the setting to the clamp plate, make the pressure to pressure tank inside block, and along with the inside continuation growth that wants of pressure tank under, slowly rise, and reach certain pressure after, make and support the clamp plate slope, open the passageway of disappointing, make jar interior medium pressure and rupture disk contact, avoided the rupture disk to contact with the medium for a long time when jar internal pressure is in the safety threshold, effectively prevent that the rupture disk from taking place the creep under long-time pressure effect, and, reduce the long-time contact of jar interior medium, effectively prevent the corruption of jar interior medium, the extension live time.
Description
Technical Field
The invention relates to the technical field of container explosion prevention, in particular to an explosion-proof assembly for a pressure container.
Background
The explosion-proof membrane is a metal membrane which is arranged on the upper part of a pressure container to prevent the container from exploding, is a safety device, also called an explosion-proof sheet or a rupture sheet, when the pressure in the container exceeds a certain limit, the membrane is firstly broken, thereby reducing the pressure in the container and avoiding explosion, and when the explosion-proof membrane is arranged on the pressure container, the explosion-proof membrane has some defects in the using process, as follows:
firstly, when the container is filled with explosive media, when the explosion-proof membrane is adopted for explosion protection, the media in the container directly contact with the explosion-proof membrane, but creep easily occurs under the condition of long-time high pressure due to the limitation of materials of the explosion-proof membrane, furthermore, fatigue is easily caused under the action of pressure change in the tank, premature damage is further caused, the pressure of the media in the tank is released and unbalanced, when the explosion-proof membrane is subjected to fatigue deformation, the deformation of the explosion-proof membrane cannot be observed in time due to the fact that the media in the tank continuously support the explosion-proof membrane, and the explosion-proof membrane cannot be replaced.
Disclosure of Invention
The invention provides an explosion-proof assembly for a pressure container, which has the advantages of high pressure-bearing capacity and good explosion-proof effect and solves the problems in the prior art.
The invention provides the following technical scheme: an explosion-proof component for a pressure container comprises a pressure tank and a pressure relief pipe, wherein the pressure relief pipe is fixedly installed at the top of the pressure tank, the bottom of the inner cavity of the pressure relief pipe is movably sleeved with a pressure-resisting plate, the right side of the pressure relief pipe is fixedly provided with a side pressure box I, a lateral pressure box II is fixedly arranged on the left side of the pressure relief pipe, a first abutting rod is movably sleeved in the lateral pressure box I, the bottom end of the first pressure-resisting rod is movably connected with the right side of the upper surface of the pressure-resisting plate through a shaft, the inside of the second side pressure box is movably sleeved with a second pressure-resisting rod, a bent buckle is fixedly arranged on the left side of the upper surface of the pressing plate, the bottom end of the pressing rod II is movably sleeved with the bent buckle, the top of the pressure relief pipe is movably clamped with a clamping body, the inner part of the clamping body is fixedly clamped with an explosion-proof membrane, and the bottom horizontal height of the side pressure box II is larger than that of the side pressure box I.
Preferably, the explosion-proof membrane is in an inverted T shape, and the side edges of the explosion-proof membrane are fixedly clamped by the clamping bodies respectively.
Preferably, the bottom surface fixed mounting of clamping body has the toughened glass cover, the bottom surface middle part fixedly connected with of rupture membrane hangs the membrane, the bottom fixed mounting who hangs the membrane has the weight lever, the both ends and the toughened glass cover activity joint of weight lever.
Preferably, the upper surface of the pressing plate is symmetrically and fixedly provided with fixing blocks, the fixing blocks are fixedly connected with elastic ropes, one ends of the elastic ropes are fixedly connected with steel balls, and the steel balls are movably connected with the fixing blocks.
Preferably, the magnet is fixedly installed inside the bent buckle, and the second abutting rod and the first abutting rod are made of steel.
The invention has the following beneficial effects:
1. the pressure inside the pressure tank is blocked by the pressure-resisting plate, slowly rises along with the continuous increase of the inside of the pressure tank, and after the pressure reaches a certain pressure, the pressure-resisting plate is inclined, the air leakage channel is opened, the pressure of the medium in the tank is contacted with the rupture membrane, the rupture membrane is prevented from being contacted with the medium for a long time when the pressure in the tank is within a safety threshold value, the rupture membrane is effectively prevented from creeping under the action of the long-time pressure, the long-time contact of the medium in the tank is reduced, the corrosion of the medium in the tank is effectively prevented, the service life is prolonged, meanwhile, the pressure inside the pressure tank is sharply increased in a short time through the arrangement of the steel balls, the pressure-resisting plate is pushed to rise, when the pressure-resisting plate impacts the side pressure tank, the steel balls quickly rise under the action of inertia to crush the rupture membrane, the pressure in the tank is directly released, and the blocking of the rupture membrane is reduced, the speed of pressure release is accelerated, the pressure tank is prevented from exploding, and the safety of the pressure tank is improved.
2. The setting of the T-shaped explosion-proof membrane enables the explosion-proof membrane to be under the action of pressure below the bottom surface, the structure at the middle part is clamped by the clamping body to form support, the upward bulging amplitude of the middle part of the explosion-proof membrane is reduced, the structural strength of the explosion-proof membrane is increased, larger pressure can be borne by the explosion-proof membrane, the application range of the explosion-proof membrane in a high-pressure tank is enlarged, meanwhile, the middle part of the bottom surface of the explosion-proof membrane is pulled through the arrangement of the toughened glass cover and the counterweight rod to resist the action of pressure in the tank, the creep of the explosion-proof membrane is further reduced, and under the pulling of the gravity of the counterweight rod, when the pressure in the pressure tank is blocked by the pressure resisting plate, the explosion-proof membrane can be pulled downwards, and then the height of the counterweight rod can be observed through the toughened glass cover, and then the deformation quantity of the explosion-proof membrane can be obtained, so that when the explosion-proof membrane reaches the deformation limit, the explosion-proof membrane is replaced in time, and the working effectiveness of the explosion-proof membrane is guaranteed.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is a schematic side view of the rupture disk and the holder of the present invention;
FIG. 3 is a schematic top view of a pressure relief tube and a pressure plate according to the present invention;
FIG. 4 is an enlarged view of the point A in FIG. 1.
In the figure: 1. a pressure tank; 2. a pressure relief pipe; 3. pressing the plate; 4. a first side pressing box; 5. a second side pressing box; 6. a first abutting rod; 7. a second abutting rod; 8. a clamping body; 9. an explosion-proof membrane; 10. a toughened glass cover; 11. a hanging membrane; 12. a weight lever; 13. bending and buckling; 14. a fixed block; 15. an elastic cord; 16. and (5) steel balls.
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.
Referring to fig. 1-3, an explosion-proof assembly for a pressure vessel comprises a pressure tank 1 and a pressure relief pipe 2, wherein the pressure relief pipe 2 is fixedly installed at the top of the pressure tank 1, a pressure-resisting plate 3 is movably sleeved at the bottom of an inner cavity of the pressure relief pipe 2, a first side pressure box 4 is fixedly installed at the right side of the pressure-relieving pipe 2, a second side pressure box 5 is fixedly installed at the left side of the pressure relief pipe 2, a first pressure-resisting rod 6 is movably sleeved inside the first side pressure box 4, the bottom end of the first pressure-resisting rod 6 is movably connected with the right side of the upper surface of the pressure-resisting plate 3 through a shaft, a second pressure-resisting rod 7 is movably sleeved inside the second side pressure box 5, a buckle 13 is fixedly installed at the left side of the upper surface of the pressure-resisting plate 3, the bottom end of the second pressure-resisting rod 7 is movably sleeved with the buckle 13, a clamping body 8 is movably clamped at the top of the pressure relief pipe 2, an explosion-proof membrane 9 is fixedly clamped inside the clamping body 8, the bottom end level of the second side pressure box 5 is higher than the bottom level of the first side pressure box 4, when the pressure in the pressure tank 1 is continuously increased, the pressure tank is firstly contacted with the pressing plate 3, the pressing plate 3 is pressed upwards, the pressing plate 3 is continuously pressed, the right part of the pressing plate 3 is pressed on the first side pressure box 4, but the left part of the pressing plate 3 is arbitrarily raised, the pressing plate 3 is further inclined, the inclined left part of the pressing plate 3 is still raised under the action of continuously increased pressure, the left part of the pressing plate starts to descend under the action of gas pressure and gravity in the first side pressure box 4, the left part of the pressing plate 3 is separated from the inner wall of the pressure relief pipe 2, the air release channel is opened, the pressure of the medium in the tank is contacted with the explosion-proof membrane 9, the explosion-proof membrane 9 is prevented from being contacted with the medium for a long time when the pressure in the tank is within a safety threshold value, the explosion-proof membrane 9 is effectively prevented from creeping under the action of long-time pressure, and the long-time contact of the medium in the tank is reduced, the corrosion of the medium in the tank is effectively prevented, and the service life is prolonged; the rupture membrane 9 is shaped like a T, when the rupture membrane 9 is under the action of pressure below the bottom surface, the structure in the middle of the rupture membrane 9 is clamped by the clamping body 8 to form support, the upward bulging amplitude of the middle of the rupture membrane 9 is reduced, the structural strength of the rupture membrane 9 is increased, so that the rupture membrane 9 can bear larger pressure, the use range of the rupture membrane 9 in a high-pressure tank is enlarged, the toughened glass cover 10 is fixedly arranged on the bottom surface of the clamping body 8, the suspension membrane 11 is fixedly connected to the middle of the bottom surface of the rupture membrane 9, the counterweight rod 12 is fixedly arranged at the bottom end of the suspension membrane 11, two ends of the counterweight rod 12 are movably clamped with the toughened glass cover 10, when the middle of the bottom surface of the rupture membrane 9 is pulled to resist the action of pressure in the tank, the creep of the rupture membrane 9 is further reduced, and when the gravity of the counterweight rod 12 pulls, when the pressure in the pressure tank 1 is blocked by the pressure resisting plate 3, the explosion-proof membrane 9 can be pulled downwards, so that the position of the weight rod 12 can be observed through the toughened glass cover 10, and the deformation quantity of the explosion-proof membrane 9 can be obtained, so that when the explosion-proof membrane 9 reaches the deformation limit, the explosion-proof membrane 9 can be replaced in time, and the working effectiveness of the explosion-proof membrane 9 is ensured;
referring to fig. 4, the upper surface of the pressing plate 3 is symmetrically and fixedly provided with fixed blocks 14, the inside of each fixed block 14 is fixedly connected with an elastic rope 15, one end of each elastic rope 15 is fixedly connected with a steel ball 16, each steel ball 16 is movably connected with the corresponding fixed block 14, when the pressure inside the pressure tank 1 is rapidly increased in a short time, the pressing plate 3 is pushed to ascend, so that when the pressing plate 3 impacts the first side pressure tank 4, the steel balls 16 continue to ascend under the action of inertia, and further impact the anti-explosion membrane 9, so that the pressure inside the pressure tank is directly released, the blocking of the anti-explosion membrane 9 is reduced, the pressure releasing speed is increased, the pressure tank 1 is prevented from being exploded, and the safety of the pressure tank 1 is improved; the magnet is fixedly installed inside the bent buckle 13, and the abutting rod II 7 and the abutting rod I6 are made of steel, so that the abutting rod I6 and the abutting rod II 7 can be movably connected and can be connected in a certain mode, when the pressure inside the pressure tank 1 does not exceed the abutting limit of the abutting plate 3, the pressure can be well connected, and the abutting rod II 7 can abut against the abutting plate 3.
The working principle is that after a certain amount of gas charging gas is charged into the side pressure box I4 and the side pressure box II 5 (the internal pressure of the side pressure box I4 and the side pressure box II 5 is far less than the internal pressure of the pressure tank 1), when the internal pressure of the pressure tank 1 is continuously increased, the gas charging gas is firstly contacted with the pressing plate 3, the pressing plate 3 is pressed upwards, the pressing plate 3 is continuously pressed, at the moment, the pressing rod I6 and the pressing rod II 7 respectively compress the gas in the side pressure box I4 and the side pressure box II 5, when the pressing plate 3 is lifted for a certain distance, the right part of the pressing plate 3 is pressed onto the side pressure box I4, but the left part of the pressing plate 3 is freely lifted, so that the pressing plate 3 is inclined, the inclined pressing plate 3 still lifts under the action of the continuously increased pressure, and the left part starts to descend under the action of the gas pressure and the gravity in the side pressure box I4, increasing the inclination force of the pressing plate 3, further separating the left part of the pressing plate 3 from the inner wall of the pressure relief pipe 2, opening a gas release channel, enabling the pressure of a medium in the tank to be in contact with the explosion-proof membrane 9, and meanwhile, if the pressure in the pressure tank 1 is sharply increased in a short time, pushing the pressing plate 3 to rise, enabling the pressing plate 3 to continuously rise under the action of inertia when the pressing plate 3 impacts the lateral pressure box 4, further impacting the explosion-proof membrane 9, enabling the pressure in the tank to be directly released, and reducing the pressure in the pressure tank 1;
when the pressure of the interior of the pressure tank 1 passes through the pressing plate 3 and reaches the bottom of the rupture membrane 9, the pressing of the rupture membrane 9 is pressed, but the middle upper part of the rupture membrane 9 is supported by the structure of the rupture membrane, the middle part serves as a boundary, two bulges are formed upwards, and after the pressure in the tank is reduced, the pressing plate 3 can press the pressure tank 1, at the moment, the weight rod 12 pulls the rupture membrane 9 downwards through the suspension membrane 11, the position of the weight rod 12 is observed through the toughened glass cover 10, the deformation of the rupture membrane 9 is judged, whether the rupture membrane needs to be replaced is observed, and if the rupture membrane needs to be replaced, the clamping body 8 is pulled out of the pressure tank 1, and the rupture membrane is replaced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An explosion-proof assembly for a pressure vessel, comprising a pressure tank (1) and a pressure relief pipe (2), characterized in that: the pressure tank is characterized in that a pressure relief pipe (2) is fixedly mounted at the top of the pressure tank (1), a pressure relief plate (3) is movably sleeved at the bottom of an inner cavity of the pressure relief pipe (2), a first side pressure box (4) is fixedly mounted at the right side of the pressure relief pipe (2), a second side pressure box (5) is fixedly mounted at the left side of the pressure relief pipe (2), a first pressure relief rod (6) is movably sleeved at the inner part of the first side pressure box (4), a first pressure relief rod (6) is movably connected with the right side of the upper surface of the pressure relief pipe (3) through a shaft, a second pressure relief rod (7) is movably sleeved at the inner part of the second side pressure box (5), a bent buckle (13) is fixedly mounted at the left side of the upper surface of the pressure relief pipe (3), the bottom end of the second pressure relief rod (7) is movably sleeved with the bent buckle (13), a clamping body (8) is movably clamped at the top of the pressure relief pipe (2), and an explosion-proof membrane (9) is fixedly clamped at the inner part of the clamping body (8), the bottom horizontal height of the second side pressing box (5) is greater than that of the first side pressing box (4).
2. An explosion-proof assembly for a pressure vessel as set forth in claim 1, wherein: the explosion-proof film (9) is in an inverted T shape, and the side edges of the explosion-proof film are respectively fixedly clamped by the clamping bodies (8).
3. An explosion-proof assembly for a pressure vessel as set forth in claim 1, wherein: the bottom surface fixed mounting of centre gripping body (8) has toughened glass cover (10), the bottom surface middle part fixedly connected with of rupture membrane (9) hangs membrane (11), the bottom fixed mounting who hangs membrane (11) has counterweight rod (12), the both ends and the toughened glass cover (10) activity joint of counterweight rod (12).
4. An explosion-proof assembly for a pressure vessel as set forth in claim 1, wherein: the upper surface of the pressing plate (3) is symmetrically and fixedly provided with fixing blocks (14), the inner parts of the fixing blocks (14) are fixedly connected with elastic ropes (15), one ends of the elastic ropes (15) are fixedly connected with steel balls (16), and the steel balls (16) are movably connected with the fixing blocks (14).
5. An explosion-proof assembly for a pressure vessel as set forth in claim 1, wherein: the magnet is fixedly installed inside the bent buckle (13), and the pressing rod II (7) and the pressing rod I (6) are made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111077869.2A CN113833985B (en) | 2021-09-15 | 2021-09-15 | Explosion-proof assembly for pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111077869.2A CN113833985B (en) | 2021-09-15 | 2021-09-15 | Explosion-proof assembly for pressure container |
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| Publication Number | Publication Date |
|---|---|
| CN113833985A true CN113833985A (en) | 2021-12-24 |
| CN113833985B CN113833985B (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111077869.2A Active CN113833985B (en) | 2021-09-15 | 2021-09-15 | Explosion-proof assembly for pressure container |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073402A (en) * | 1976-07-21 | 1978-02-14 | Black, Sivalls & Bryson, Inc. | Preassembled pressure relief apparatus |
| US4777974A (en) * | 1986-04-08 | 1988-10-18 | Fike Corporation | Staged pressure relief assembly |
| CN1472462A (en) * | 2002-07-05 | 2004-02-04 | ��������ķ������ | Prevention of accumulatnig materials unwanted |
| CN2676009Y (en) * | 2003-12-12 | 2005-02-02 | 张鹏程 | Multipurpose explosion-proof type gas charging bottle |
| KR20100081794A (en) * | 2009-01-07 | 2010-07-15 | 에프디씨 주식회사 | Rupture disc assembly |
| KR101248442B1 (en) * | 2012-04-18 | 2013-04-02 | 에프디씨 주식회사 | Rupture disc assembly and method for manufacturing a control disc of the rupture disc assembly |
| CN203223604U (en) * | 2013-03-12 | 2013-10-02 | 上海华理安全装备有限公司 | Serial connection and combination device between anti-backpressure creep-resistant rupture disc and fusible plug |
| CN204300442U (en) * | 2014-11-05 | 2015-04-29 | 北京航天动力研究所 | A kind of pressure lever type safe pressure relief device |
| CN205211824U (en) * | 2015-12-21 | 2016-05-04 | 广东九九华立新材料股份有限公司 | Battery blast resistant construction |
| CN206786087U (en) * | 2017-06-05 | 2017-12-22 | 安徽理工大学 | A kind of blasting piece device |
| CN209540135U (en) * | 2018-12-14 | 2019-10-25 | 上海华理安全装备有限公司 | A kind of pressure lever type blasting piece device |
| CN211624866U (en) * | 2019-12-25 | 2020-10-02 | 江苏永春环境工程有限公司 | Two-stage pressure relief type explosion-proof device |
| CN212480262U (en) * | 2020-08-05 | 2021-02-05 | 上海嘉芃机电设备有限公司 | Blasting needle type dust removal type pressure relief device |
-
2021
- 2021-09-15 CN CN202111077869.2A patent/CN113833985B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073402A (en) * | 1976-07-21 | 1978-02-14 | Black, Sivalls & Bryson, Inc. | Preassembled pressure relief apparatus |
| US4777974A (en) * | 1986-04-08 | 1988-10-18 | Fike Corporation | Staged pressure relief assembly |
| CN1472462A (en) * | 2002-07-05 | 2004-02-04 | ��������ķ������ | Prevention of accumulatnig materials unwanted |
| CN2676009Y (en) * | 2003-12-12 | 2005-02-02 | 张鹏程 | Multipurpose explosion-proof type gas charging bottle |
| KR20100081794A (en) * | 2009-01-07 | 2010-07-15 | 에프디씨 주식회사 | Rupture disc assembly |
| KR101248442B1 (en) * | 2012-04-18 | 2013-04-02 | 에프디씨 주식회사 | Rupture disc assembly and method for manufacturing a control disc of the rupture disc assembly |
| CN203223604U (en) * | 2013-03-12 | 2013-10-02 | 上海华理安全装备有限公司 | Serial connection and combination device between anti-backpressure creep-resistant rupture disc and fusible plug |
| CN204300442U (en) * | 2014-11-05 | 2015-04-29 | 北京航天动力研究所 | A kind of pressure lever type safe pressure relief device |
| CN205211824U (en) * | 2015-12-21 | 2016-05-04 | 广东九九华立新材料股份有限公司 | Battery blast resistant construction |
| CN206786087U (en) * | 2017-06-05 | 2017-12-22 | 安徽理工大学 | A kind of blasting piece device |
| CN209540135U (en) * | 2018-12-14 | 2019-10-25 | 上海华理安全装备有限公司 | A kind of pressure lever type blasting piece device |
| CN211624866U (en) * | 2019-12-25 | 2020-10-02 | 江苏永春环境工程有限公司 | Two-stage pressure relief type explosion-proof device |
| CN212480262U (en) * | 2020-08-05 | 2021-02-05 | 上海嘉芃机电设备有限公司 | Blasting needle type dust removal type pressure relief device |
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| CN113833985B (en) | 2022-12-27 |
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Effective date of registration: 20221207 Address after: 444100 west section of Jinping Avenue, baling office, Dangyang city, Yichang City, Hubei Province Applicant after: HUBEI HONGYI ELECTRONIC SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 466000 Qing Ji Xiang Shi Liu Liang Xing Zheng Cun Du Fu Cun, Taikang County, Zhoukou City, Henan Province Applicant before: Du Hongtao |
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Address after: 444100 west section of Jinping Avenue, baling office, Dangyang city, Yichang City, Hubei Province Patentee after: Hubei Hongyi Intelligent Equipment Co.,Ltd. Address before: 444100 west section of Jinping Avenue, baling office, Dangyang city, Yichang City, Hubei Province Patentee before: HUBEI HONGYI ELECTRONIC SCIENCE & TECHNOLOGY Co.,Ltd. |