CN113171567B - Flexible valve executor fire prevention cover - Google Patents
Flexible valve executor fire prevention cover Download PDFInfo
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- CN113171567B CN113171567B CN202110524981.XA CN202110524981A CN113171567B CN 113171567 B CN113171567 B CN 113171567B CN 202110524981 A CN202110524981 A CN 202110524981A CN 113171567 B CN113171567 B CN 113171567B
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- tightening
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- seat
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/24—Operating or controlling mechanisms
- A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
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- Business, Economics & Management (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a flexible valve actuator fireproof cover. The flexible valve actuator fireproof cover comprises one or more fireproof surfaces which are spliced to cover the outer surface of the actuator, and one or more groups of tightening devices are arranged at the head-tail joint of one fireproof surface or at the spliced joints of a plurality of fireproof surfaces at an angle vertical to the joints; the tightening device comprises a tightening belt, a tightening seat and a tightening expansion bag, wherein the tightening belt is fixed on the two sides of the joint respectively by the tightening seat, the tightening belt is an elongated flexible fireproof cloth belt with a hollow inner part, one end of the tightening belt is fixed on the fireproof surface outer wall, the other end of the tightening belt extends to the other side of the joint and penetrates through the tightening seat, and the tightening belt is arranged at the tail end far away from the fixed point and inside between the tightening seats. The fire-proof cover of the flexible valve actuator provided by the invention solves the technical problem of insufficient sealing property of the fire-proof cover in the prior art.
Description
Technical Field
The invention relates to the field of fireproof covers, in particular to a fireproof cover of a flexible valve actuator.
Background
At present, along with increasing importance of the national security control on the storage of chemical devices and dangerous chemicals, the application of setting a fireproof cover for a valve actuating mechanism in related industries such as petrochemical projects is increased gradually. The essence of the fire protection cover is that the temperature rise of an execution mechanism in the fire protection cover is controlled during fire, and the requirement of the fire protection cover in the current standard is that the temperature rise of the execution mechanism is not more than 30-40 ℃ in 30 minutes in 1093 ℃ liquid hydrocarbon fire. Because the fire-proof cover is a product assembled on the site of the device, and the heat dissipation of the actuating mechanism is required to be ensured in normal operation, a large number of seams and gaps are inevitably formed. Therefore, the fireproof cover is designed to ensure the fireproof and heat insulation performance of the fireproof cover, and how to quickly block the joints and gaps in case of fire. The current conventional scheme is to arrange springs at two sides of the gap and a sealing sheet which expands when heated in the gap. When a fire disaster happens, the temperature rises, the sealing sheet expands and is tensioned in a matched manner with the spring, and the gap is closed. However, the spring has a problem of reduced yield strength at a continuously high temperature, and the spring has a risk of failure after a period of time in the case of a fire, so that the sealing performance of the fireproof cover is reduced.
Disclosure of Invention
In order to solve the technical problem of insufficient sealing performance of the fireproof cover in the prior art, the invention provides the fireproof cover of the flexible valve actuator, which solves the problem.
The utility model provides a flexible valve executor fire prevention cover, includes that one or more amalgamation cover the fire plane of executor surface, its characterized in that: one or more groups of tightening devices are arranged at the head-tail joint of one fireproof surface or the splicing joints of a plurality of fireproof surfaces at an angle vertical to the joint; the tightening device comprises a tightening belt, a tightening seat and a tightening expansion bag, wherein the tightening belt is fixed on the two sides of the joint respectively by the tightening seat, the tightening belt is an elongated flexible fireproof cloth belt with a hollow inner part, one end of the tightening belt is fixed on the fireproof surface outer wall, the other end of the tightening belt extends to the other side of the joint and penetrates through the tightening seat, and the tightening belt is arranged at the tail end far away from the fixed point and inside between the tightening seats.
In a preferred embodiment of the fire-proof cover for a flexible valve actuator provided by the present invention, the tightening seat includes a tightening mounting member and a tightening limiting member, the tightening mounting member is fixed to the fire-proof surface, the tightening limiting member is disposed on a side of the tightening limiting member away from the fire-proof surface, and a channel is provided for the extension strip, the tightening strip, and the tightening expansion bag to pass through.
In a preferred embodiment of the fire-proof cover of the flexible valve actuator provided by the invention, the tightening device further includes a quick release joint, and the tightening belt is fixed on the outer wall of the fire-proof surface through the quick release joint. The quick-release joint is of a hinge type structure, two pages of the quick-release joint are fixedly connected with the outer wall of the fireproof surface and the tightening belt respectively, and a main shaft connecting the two pages of the quick-release joint is detachably connected.
In a preferred embodiment of the fire-proof cover for the flexible valve actuator provided by the invention, the fire-proof cover for the flexible valve actuator further comprises a pre-tightening device; the pre-tightening device comprises an extension belt, a pre-tightening seat and a pre-tightening expansion bag, wherein the extension belt is a long-strip-shaped flexible fireproof cloth belt and is arranged at the tail end of the tightening belt far away from a fixed point, the pre-tightening seat is fixed on the outer wall of the fireproof surface of the tightening seat on the same side, the extension belt penetrates through the pre-tightening seat, and the pre-tightening expansion bag is arranged on the inner wall of a position, through which the extension belt penetrates, of the pre-tightening seat.
In a preferred embodiment of the fire-proof cover for the flexible valve actuator provided by the invention, the pre-tightening seat comprises a pre-tightening mounting piece and a pre-tightening limiting piece, the pre-tightening mounting piece is fixed on the fire-proof surface, the pre-tightening limiting piece is arranged on one side of the pre-tightening mounting piece, which is far away from the fire-proof surface, and is provided with a channel for the extension belt to pass through, and the inner wall of the channel is provided with the pre-tightening expansion bag.
In a preferred embodiment of the fire-proof cover for a flexible valve actuator provided by the present invention, the fire-proof cover for a flexible valve actuator further comprises a sealing plate; the sealing plate is a strip-shaped structure arranged in the joint and is divided into two parts by an angle parallel to the joint: one part is inserted into the joint, the inside of the joint is hollow and is provided with a plurality of through holes communicated with the inside and the outside, one or more sealed expansion bags are arranged inside the joint, and the other part is exposed outside the joint and is provided with one or more through holes for the extension belt, the tightening belt and the tightening expansion bags to pass through.
In a preferred embodiment of the fire-proof cover for the flexible valve actuator provided by the invention, one end of the tightening belt is fixed on the outer wall of the fire-proof surface, and the other end of the tightening belt extends to the other side of the seam and sequentially passes through the sealing plate and the tightening seat.
Compared with the prior art, the flexible valve actuator fireproof cover provided by the invention has the advantages that the tightening belt is pressed and tightened through the pre-tightening expansion bag and the tightening expansion bag, the sealing of the seam of the fireproof surface is realized, and the flexible valve actuator fireproof cover is more stable in use and better in sealing effect compared with a traditional mode of arranging a tension spring. The sealing plate in the flexible valve actuator fireproof cover provided by the invention is supported by the tightening belt, so that the whole process can be prevented from displacement, and the flexible valve actuator fireproof cover has the advantages of stable use and good sealing effect compared with the traditional fixing mode of gluing.
In addition, the flexible valve actuator fireproof cover provided by the invention is connected with the tightening belt in a quick-release mode, and can be quickly disconnected after a fire disaster happens to realize disassembly without cutting the tightening belt. The disassembly and the new assembly of the fireproof cover can be rapidly carried out.
Drawings
FIG. 1 is a schematic structural diagram of a fire-proof cover of a flexible valve actuator in embodiment 1;
FIG. 2 is a schematic view of the tightening device and pretensioning device of FIG. 1;
FIG. 3 is a schematic view of the structure of the sealing plate 4 of FIG. 1;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is a schematic structural view of a fire-proof cover of a flexible valve actuator in embodiment 2;
FIG. 6 is a schematic view of the tightening mechanism and pretensioning device of FIG. 5.
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.
Example 1:
referring to fig. 1 and fig. 2, there are respectively schematic structural diagrams of a fire-proof cover 1 of a flexible valve actuator, and a set of tightening devices 2 and pre-tightening devices 3 therein according to the present invention.
The flexible valve actuator fireproof cover 1 comprises two fireproof surfaces 11 which are spliced to cover the outer surface of the actuator, four groups of tightening devices 2, four groups of pre-tightening devices 3 and a sealing plate 4. In the embodiment and the drawings, only four sets of the tightening device 2, four sets of the pre-tightening device 3 and one sealing plate 4 are shown, but in actual use, the number of the tightening devices can be increased or decreased according to the circumstances.
The tightening device 2 comprises a tightening belt 21, a tightening seat 22 and a tightening expansion bag 23. The tightening belt 21 is a strip-shaped flexible fireproof cloth belt which is sewn by high-silica fireproof cloth and is hollow inside, and is arranged at an angle which is perpendicular to the seam of the fireproof surface 11. One end of the fixing is fixed on the outer wall of one side of the seam of the fireproof surface 11, and the other end extends to the other side of the seam. The other side of the seam of the fireproof surface 11 is provided with the tightening seat 22.
The tightening socket 22 includes a tightening mounting member 221 and a tightening stop 222. The tightening mounting member 221 is a rectangular steel plate, the length direction of which is perpendicular to the length direction of the tightening belt 21, and both ends of which are riveted to the outer wall of the fireproof surface 11. The tightening limiting member 222 is a square ring structure made of steel, and is welded to a surface of the tightening mounting member 221 away from the fire-proof surface 11 at an angle that the ring surface is perpendicular to the tightening mounting member, so as to form an inverted "T" shaped structure.
The tightening expansion bag 23 is made of expanded graphite and is adhered to one end of the tightening belt 21 away from the fixing point of the tightening belt by a flame-retardant adhesive.
The space inside the tightening stop 222 is to ensure that the tightening strap 21 and the tightening expansion package 23 inside the tightening strap can pass through the space.
The pre-tightening device 3 comprises an extension belt 31, a pre-tightening seat 32 and a pre-tightening expansion bag 33. The extension band 31 may be configured in accordance with the tightening band 21 to be equal to extending the length of the tightening band 21; alternatively, a single layer high silica fire-resistant cloth without an internal hollow may be attached to the end of the tightening strap 21 remote from its point of attachment.
The pre-tightening socket 32 is similar in construction to the tightening socket 22, differing only in its wider width. The pre-tensioned inflatable bag 33 is also similar in construction to the tensioned inflatable bag 23, except that it is shorter in length. The pre-tightening expansion bag 33 is bonded to the inner wall of the channel of the pre-tightening seat 32 through a flame-retardant adhesive.
Referring to fig. 3 and fig. 4, a schematic structural diagram and a cross-sectional view of the sealing plate 4 in the fire-proof cover 1 of the flexible valve actuator are respectively provided.
The sealing plate 4 is formed by folding a steel plate in half and is divided into two parts at an angle parallel to the length direction: wherein the lower half part is bent to keep a certain gap, a cavity is formed, and a sealed expansion bag 41 is filled in the cavity; the upper half parts are jointed. The sealed expansion bag 41 is also made of expanded graphite in a rectangular shape, and fills the cavity of the lower half part.
In addition, the lower half part is provided with a plurality of through holes communicated with the inside and the outside of the cavity of the lower half part, so that the sealing expansion bag 41 can overflow when being expanded by heat. A few larger holes may also be provided. In the upper half four through holes are punched, of the same size as the channels of the tightening socket 22.
The initial expansion temperature of the pre-tightening expansion packet 33 is sequentially greater than the initial expansion temperature of the tightening expansion packet 22 and greater than the initial expansion temperature of the sealing expansion packet 41.
In specific implementation, the sealing plate 4 is inserted into the seam of the fireproof surface 11, wherein the lower half part is submerged between the seams and the upper half part is exposed outside the seams.
And then the tightening belt 21 and the extension belt 31 are integrally and sequentially passed through the through hole of the upper half part of the sealing plate 4, the channel of the tightening seat 22 and the channel of the pre-tightening seat 32. The tightening expansion packet 23 should be located just between the pre-tightening seat 32 and the tightening seat 22.
In the case of a fire, the outside temperature rapidly rises. The pre-tightening expansion bag 33 is caused to expand by heat, so as to seal the inner space of the pre-tightening seat 32 and tightly press the extension belt 31. On the one hand, the tightening strap 21 is held loose and on the other hand, the tightening expansion packet 23 is held expanding only in the direction of the data tightening socket 22.
Continued temperature rise causes the tightening expansion packet 23 to expand, thereby creating an effect of pushing the tightening socket 22 at a right-to-left angle, which pushes the seam of the fire face 11 tightly sealed.
Further temperature rise causes the expansion of the sealing expansion bag 41 to further fill the seam of the fire-protecting surface 11 and to react with the tightening expansion bag 23, which cooperate to achieve a sufficient seal.
Example 2:
fig. 5 and fig. 6 are schematic structural views of the fire-proof cover 1 of the flexible valve actuator, and a set of tightening devices 2 and pre-tightening devices 3 therein, respectively.
The difference from example 1 is that: the tightening device 2 further comprises a quick release coupling 24.
One end of the tightening belt 21, which is far away from the tightening expansion packet 23, is fixed on the outer wall of the fireproof surface 11 through the quick release joint 24. The structure of the quick-release joint 24 is similar to that of a hinge, two pages of the quick-release joint are respectively riveted with the tightening belt 21 and the fireproof surface 11, a central shaft for connecting the two pages is a smooth-wall round rod, the quick-release joint can be smoothly inserted into and pulled out from the space between the two pages, and a handle is further arranged at one end of the quick-release joint, so that the inserting and pulling actions are further simplified.
After a fire disaster occurs, the expansion bags are expanded and locked to cause difficulty in disassembling the fireproof cover, the quick disconnection of the tightening belt 21 can be realized by drawing out the middle shaft of the quick-disassembly joint 24, the quick disassembly of the fireproof cover is realized, and the new fireproof cover is convenient to replace.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The utility model provides a flexible valve executor fire prevention cover, includes that one or more amalgamation cover executor surface's fire prevention face, its characterized in that: one or more groups of tightening devices are arranged at the head-tail joint of one fireproof surface or the splicing joints of a plurality of fireproof surfaces at an angle vertical to the joint; the tightening device comprises a tightening belt, a tightening seat and a tightening expansion bag, the tightening belt and the tightening seat are respectively fixed on the outer walls of the fireproof surfaces at two sides of a seam, the tightening belt is a strip-shaped flexible fireproof cloth belt which is hollow inside, one end of the tightening belt is fixed on the outer wall of the fireproof surface, the other end of the tightening belt extends to the other side of the seam and penetrates through the tightening seat, and the tightening expansion bag is arranged inside the tightening belt between the tail end far away from the fixed point and the tightening seat;
the flexible valve actuator fireproof cover also comprises a pre-tightening device; the pre-tightening device comprises an extension belt, a pre-tightening seat and a pre-tightening expansion bag, wherein the extension belt is a long strip-shaped flexible fireproof cloth belt and is arranged at the tail end of the tightening belt, which is far away from a fixed point;
the flexible valve actuator fireproof cover also comprises a sealing plate; the sealing plate is a long strip structure arranged in the joint and is divided into two parts by an angle parallel to the joint: one part is inserted into the joint, the inside of the joint is hollow and is provided with a plurality of through holes for communicating the inside and the outside, one or more sealed expansion bags are arranged inside the joint, the other part is exposed outside the joint and is provided with one or more through holes for the extension belt, the tightening belt and the tightening expansion bags to pass through;
when a fire disaster happens, the external temperature is rapidly increased, the pre-tightening expansion bag is led to be heated and expanded in a leading mode, the internal space of the pre-tightening seat is sealed and tightly propped against the extension belt, on one hand, the tightening belt is kept not to be loosened, and on the other hand, the tightening expansion bag is kept to expand only towards the direction of the tightening seat;
the temperature is further increased to cause the tightening expansion bag to expand, so that the effect of pushing the tightening seat from right to left is achieved, and the joint of the fireproof surface is locked and sealed by the pushing force;
and when the temperature is further increased, the sealing expansion bag expands to further fill the seam of the fireproof surface and form reaction force with the tightening expansion bag, and the sealing expansion bag and the tightening expansion bag are matched and locked to realize sufficient sealing.
2. The flexible valve actuator fire shield of claim 1, wherein: the tightening seat comprises a tightening mounting part and a tightening limiting part, the tightening mounting part is fixed on the fireproof surface, the tightening limiting part is arranged on one side of the tightening mounting part, which is far away from the fireproof surface, and a channel for the extension belt, the tightening belt and the tightening expansion bag to pass through is arranged.
3. The flexible valve actuator fire shield of claim 1, wherein: the tightening device further comprises a quick-release joint, and the tightening belt is fixed on the outer wall of the fireproof surface through the quick-release joint.
4. The flexible valve actuator fire shield of claim 3, wherein: the quick-release joint is of a hinge type structure, two pages of the quick-release joint are fixedly connected with the outer wall of the fireproof surface and the tightening belt respectively, and a main shaft connecting the two pages of the quick-release joint is detachably connected.
5. The flexible valve actuator fire shield of claim 1, wherein: the pre-tightening seat comprises a pre-tightening mounting piece and a pre-tightening limiting piece, the pre-tightening mounting piece is fixed on the fireproof surface, the pre-tightening limiting piece is arranged on one side, away from the fireproof surface, of the pre-tightening limiting piece, a channel for the extension belt to penetrate through is arranged, and the inner wall of the channel is provided with the pre-tightening expansion bag.
6. The flexible valve actuator fire shield of claim 1, wherein: one end of the tightening belt is fixed on the outer wall of the fireproof surface, and the other end of the tightening belt extends to the other side of the seam and sequentially penetrates through the sealing plate and the tightening seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110524981.XA CN113171567B (en) | 2021-05-14 | 2021-05-14 | Flexible valve executor fire prevention cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110524981.XA CN113171567B (en) | 2021-05-14 | 2021-05-14 | Flexible valve executor fire prevention cover |
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| CN113171567A CN113171567A (en) | 2021-07-27 |
| CN113171567B true CN113171567B (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110524981.XA Active CN113171567B (en) | 2021-05-14 | 2021-05-14 | Flexible valve executor fire prevention cover |
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| CN207941111U (en) * | 2018-01-18 | 2018-10-09 | 温州安工机械科技有限公司 | A kind of portable flexible flameproof enclosure |
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| EP3674511A1 (en) * | 2018-12-31 | 2020-07-01 | Conegliano Group S.r.l. | Fire protection closure system of the fire curtain type equipped with a mantle with insulating chamber |
| CN211126926U (en) * | 2019-12-23 | 2020-07-28 | 江苏华泽机电设备有限公司 | Cable bridge easy to disassemble |
| CN111824384A (en) * | 2020-06-15 | 2020-10-27 | 中国科学院空天信息创新研究院 | High-altitude balloon restraint device |
| CN212810413U (en) * | 2020-09-09 | 2021-03-26 | 一汽-大众汽车有限公司 | Electric automobile battery package protection upper cover |
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2021
- 2021-05-14 CN CN202110524981.XA patent/CN113171567B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206287596U (en) * | 2016-10-25 | 2017-06-30 | 中国石油化工股份有限公司 | Anti- burning composite intermediate layer |
| CN107355581A (en) * | 2016-10-31 | 2017-11-17 | 中国石油化工股份有限公司 | Rigid fireproof box |
| CN106730192A (en) * | 2016-11-23 | 2017-05-31 | 中国人民解放军第三军医大学第三附属医院 | Noninvasive ventilator lower jaw fixing device |
| CN207941111U (en) * | 2018-01-18 | 2018-10-09 | 温州安工机械科技有限公司 | A kind of portable flexible flameproof enclosure |
| EP3674511A1 (en) * | 2018-12-31 | 2020-07-01 | Conegliano Group S.r.l. | Fire protection closure system of the fire curtain type equipped with a mantle with insulating chamber |
| CN111214781A (en) * | 2019-11-27 | 2020-06-02 | 浙江东榜科技有限公司 | Panel sealing structure applied to fireproof cover |
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| CN212810413U (en) * | 2020-09-09 | 2021-03-26 | 一汽-大众汽车有限公司 | Electric automobile battery package protection upper cover |
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| CN113171567A (en) | 2021-07-27 |
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