阅读说明：本技术 一种特种箱体用防火耐高温密封结构 (Fireproof high-temperature-resistant sealing structure for special box body ) 是由 李忠盛 吴护林 黄安畏 孙彩云 吴永鹏 吴道勋 舒露 蒋龙 周富 于 2019-11-22 设计创作，主要内容包括：本发明公开了一种特种箱体用防火耐高温密封结构,它是由车厢边框(1)、车厢尾柱(2)、车厢尾门(3)、第一道密封结构(4)、第二道密封结构(5)、第三道密封结构(6)、隔热保温材料(7)组成；其中,所述第一道密封结构(4)、第二道密封结构(5)、第三道密封结构(3)的组合结构呈阶梯状。该结构在高温环境下,有效避免出现气体通路、整体密封效果好,能有效隔绝高温气流直接灌入车厢内部、导致车厢内部温度升高；同时,该结构也能避免火焰烧毁密封胶条后,密封效果降低、防火隔热效果降低的情况出现。(The invention discloses a fireproof high-temperature-resistant sealing structure for a special box body, which consists of a box frame (1), a box tail column (2), a box tail door (3), a first sealing structure (4), a second sealing structure (5), a third sealing structure (6) and a heat-insulating material (7); the combined structure of the first sealing structure (4), the second sealing structure (5) and the third sealing structure (3) is in a step shape. The structure effectively avoids gas passages in a high-temperature environment, has good integral sealing effect, and can effectively isolate high-temperature airflow from being directly filled into the carriage to cause the temperature in the carriage to rise; meanwhile, the structure can also avoid the situation that the sealing effect is reduced and the fireproof and heat-insulating effect is reduced after the sealing rubber strips are burnt by flame.)

1. The utility model provides a fire prevention high temperature resistant seal structure for special box which characterized in that: the novel car tail gate is composed of a car frame (1), a car tail column (2), a car tail gate (3), a first sealing structure (4), a second sealing structure (5), a third sealing structure (6) and a heat insulation material (7); the combined structure of the first sealing structure (4), the second sealing structure (5) and the third sealing structure (3) is in a step shape, and the first sealing structure (4) is close to the carriage tail door (3) and the third sealing structure (6) is close to the carriage tail column (2); the first sealing structure (4) is a plane sealing structure and adopts a fireproof expansion rubber strip, the second sealing structure (5) is a three-surface sealing structure (51), the three-surface sealing structure (51) is a structure that the middle of the sealing rubber strip close to one side of the carriage tail column is a convex plane, and the two sides of the sealing rubber strip are inclined planes, the third sealing structure (6) is a point contact type sealing structure (61), the point contact type structure (61) is a plurality of small bosses (611) which are unevenly distributed on the surface of the sealing rubber strip close to one side of the carriage tail column (2), and the second sealing structure (5) and the third sealing structure (6) both adopt high-temperature resistant rubber strips; the heat insulation material is filled between the sealing rubber strip close to the carriage tail door (3) and the carriage tail door (3) through the second sealing structure (5) and the third sealing structure (6), the heat insulation material (7) is filled between the sealing rubber strip close to the carriage tail column (2) and the carriage frame (1) through the second sealing structure (5) and the third sealing structure (6), and the heat insulation material (7) is filled in the carriage tail column (2).

2. The fire-proof and high-temperature-resistant sealing structure for the special box body according to claim 1, characterized in that: the fireproof expansion rubber strip is made of rubber, and the main filler is any one of asbestos and graphite.

3. The fire-proof and high-temperature-resistant sealing structure for the special box body according to claim 2, characterized in that: the high-temperature-resistant rubber strip is made of any one of silicon rubber or fluorosilicone rubber.

4. A fire-proof and high-temperature resistant sealing structure for a special box body according to claim 3, characterized in that: the heat insulation material (7) adopts any one of aerogel felt, silicate and glass fiber.

5. The fire-proof and high-temperature-resistant sealing structure for the special box body according to claim 4, characterized in that: the angle between the convex plane of the three-surface sealing structure (51) and the inclined plane is 15-20 degrees.

Technical Field

The invention relates to the field of thermal protection, in particular to a fireproof high-temperature-resistant sealing structure for a special box body.

Background

Under the extreme working conditions, for example, when flame combustion exists outside the vehicle or the shelter, and when external flame exists outside the door or the window of the vehicle or the shelter, the high polymer materials such as the sealant strip of the door or the window are extremely easy to burn, so that gas passages are generated, heat is quickly transferred to the inner space of the vehicle or the shelter through the passages, the temperature of the inner space is quickly increased, the normal operation of internal electronic components, equipment and the like is influenced, and even the equipment is fatally damaged.

Disclosure of Invention

The invention aims to provide a fireproof high-temperature-resistant sealing structure for a special box body, which has good integral sealing effect and few gas passages in a high-temperature environment, and can effectively isolate high-temperature gas flow from being directly injected into a carriage to cause the temperature in the carriage to rise; meanwhile, the structure can also avoid the situation that the sealing effect is reduced and the fireproof and heat-insulating effect is reduced after the sealing rubber strips are burnt by flame.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a fire prevention high temperature resistant seal structure for special box which characterized in that: the novel wagon box is composed of a wagon frame, a wagon tail column, a wagon tail door, a first sealing structure, a second sealing structure, a third sealing structure and a heat insulation material; the combined structure of the first sealing structure, the second sealing structure and the third sealing structure is in a step shape, and the first sealing structure is close to the carriage tail door and the third sealing structure is close to the carriage tail column; the first sealing structure is a plane sealing structure and adopts a fireproof expansion rubber strip, the second sealing structure is a three-surface sealing structure, the three-surface sealing structure is a structure that the middle of the sealing rubber strip close to one side of the carriage tail column is a convex plane and the two sides of the sealing rubber strip are inclined planes, the third sealing structure is a point contact type sealing structure, the point contact type sealing structure is a structure that a plurality of small bosses are unevenly distributed on the surface of the sealing rubber strip close to one side of the carriage tail column, and the second sealing structure and the third sealing structure both adopt high-temperature resistant rubber strips; the heat insulation material is filled between the sealing rubber strips of the second sealing structure and the third sealing structure, which are close to the carriage tail door, and the carriage tail door, the heat insulation material is filled between the sealing rubber strips of the second sealing structure and the third sealing structure, which are close to the carriage tail column, and the carriage frame, and the heat insulation material is filled in the carriage tail column.

The structure prevents direct convection of air and direct heat exchange between external hot air and internal air through the combination of three seals and the design of a step shape, thereby realizing thermal isolation and ensuring the sealing property inside a carriage; first joint strip is because of outside flame firing or high temperature rapid expansion, fills because of the heat leads to the space that probably appears between the adhesive tape, simultaneously through the trilateral structure of second joint strip and the point contact formula structure cooperation of third joint strip, effective separation gas flow, avoid forming gas exchange's route, prevent that hot-air from getting into inside the carriage.

By filling the heat insulation material, heat among the carriage frame, the carriage tail column and the carriage tail door is prevented from being rapidly transmitted to the sealing rubber strips of the second sealing structure and the third sealing structure, so that the temperature of the sealing rubber strips is increased, and the sealing effect of the second sealing structure and the third sealing structure is prevented from being influenced by the melting of the rubber strips and the like; the design of the heat insulation material ensures the overall sealing effect of the carriage and prevents external high-temperature airflow from being poured into the square cabin.

Furthermore, the fireproof expansion rubber strip is made of rubber, and the main filler is any one of asbestos and graphite.

Further, the high-temperature resistant rubber strip is made of any one of silicon rubber or fluorosilicone rubber.

Further, the heat insulation material adopts any one of aerogel felt, silicate and glass fiber.

Furthermore, in order to prevent direct convection of gas and ensure the sealing performance of the second sealing structure, the angle between the convex plane of the three-surface sealing structure and the inclined plane is 15-20 degrees.

Furthermore, in order to prevent direct convection of gas and ensure the sealing performance of the third sealing structure, the protruding height of the small boss is 0.5 mm-1 mm

The invention has the following technical effects:

according to the invention, through the first sealing structure, under the conditions of flame ignition and high temperature, the generated gap is quickly sealed and filled, and meanwhile, the second sealing structure and the third sealing structure are matched, so that the overall sealing is realized, the gas passage and the cold and hot air exchange loop are prevented, and the external hot air is effectively isolated from entering the interior of the carriage; through the filling of thermal-insulated insulation material, avoid the second seal structure and the third seal structure adhesive tape receive the outside heat influence the condition that expend with heat and contract with cold appears, avoid the second seal structure and the third seal structure the space formation gas circuit that appears to avoid the decline of whole leakproofness. The structure of the invention can also avoid the situations that the sealing effect is reduced and the fireproof and heat-insulating effect is reduced after the sealing rubber strip is burnt by flame.

Drawings

Fig. 1 is a schematic structural diagram of a fireproof high-temperature-resistant sealing structure in an embodiment of the invention.

Fig. 2 is a partially enlarged schematic view of a second seal structure in the embodiment of the present invention.

Fig. 3 is a partially enlarged schematic view of a third seal structure in the embodiment of the present invention.

FIG. 4 is a diagram illustrating the effect of the sealing structure after the expansion of the rubber strip of the door after the fire-proof experiment according to the embodiment of the invention.

Wherein, 1, a carriage frame; 2. a carriage tail pillar; 3. a compartment tail door; 4. a first sealing structure; 5. a second sealing structure; 51. a three-side sealing structure; 6. a third sealing structure; 61. a point contact type sealing structure; 611. a small boss; 7. a thermal insulation material; 10. an interior trim panel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention.