CN210370420U - Door frame sealing structure of high-low temperature damp-heat test box - Google Patents
Door frame sealing structure of high-low temperature damp-heat test box Download PDFInfo
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- CN210370420U CN210370420U CN201920979629.3U CN201920979629U CN210370420U CN 210370420 U CN210370420 U CN 210370420U CN 201920979629 U CN201920979629 U CN 201920979629U CN 210370420 U CN210370420 U CN 210370420U
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Abstract
The utility model discloses a door frame seal structure of high low temperature damp and hot test box, the connection space department of the box and the door body set up a plurality of sealing strips, and the second lateral wall, kink and the sealing of sealing strip enclose the cavity seal chamber of synthetic cross-section for having the convex polygon more than the four sides. The utility model discloses setting up multichannel sealing strip in the inside connection space department of being close to the proof box, the sealing strip has the sealed chamber of convex polygon cross-section, and the air volume in sealed chamber is bigger, and thermal-insulated effect is better. When the door body is closed, the bending part is bent and deformed towards the width direction of the connecting gap, the air volume in the sealing cavity can be kept not to be reduced, and the heat insulation effect of the sealing strip is guaranteed to the maximum extent, so that the door body has a better heat insulation effect, excessive sealing parts and heat insulation plates are not needed, and materials can be saved. When the cross section of the hollow sealing cavity of the sealing strip is in a quadrilateral shape, the heat insulation effect is good, and materials are saved most.
Description
Technical Field
The utility model belongs to the technical field of the environmental test equipment technique and specifically relates to a door frame seal structure of high low temperature damp and hot test case.
Background
The high-low temperature damp-heat test box is also named as an environment testing machine, is used for reliability tests of industrial products in high-temperature, low-temperature and different humidity environments, and is used for testing various performance indexes of parts and materials of related products such as electronic engineering, automobile motorcycles, aerospace, ship weapons, universities and colleges, scientific research units and the like in the high-temperature, low-temperature and different humidity environments. The temperature range of the high-low temperature damp-heat test box is-70-180 ℃, so that the temperature resistance range of a door body of the test box is required to be-70-180 ℃.
Chinese patent cn201720686877.x discloses a cryrogenic proof box door frame seal structure, seal structure (3) are including graphite tetrafluoro seal packing (3a), from limit for temperature heating zone (3b) and silica gel seal packing (3c), the inboard correspondence of box (1) and door body (2) joint space department is equipped with graphite tetrafluoro seal packing (3a), when the door body (2) is closed, graphite tetrafluoro seal packing (3a) of installing in box (1) and the graphite tetrafluoro seal packing (3a) of installing in the door body (2) contact extrusion each other are in the same place, silica gel seal packing (3c) are installed on the door body (2) and are located the outside in joint space. Because the section shape of the hollow sealing cavity of the silica gel sealing packing (3c) is approximately triangular, the air volume of the sealing cavity is smaller. When the packing is extruded, the sealing surface of the silica gel sealing packing (3c) is bent towards the direction of the sealing cavity under the action of external force, so that the air volume in the sealing cavity is reduced, and the heat insulation effect is reduced. In order to solve the problem that the heat insulation effect is not ideal, heat insulation plates are further arranged on the door body and the box body for heat insulation. Because the relative elasticity of material and the gas tightness of graphite tetrafluoro seal packing (3a) are relatively poor, need two graphite tetrafluoro seal packing (3a) to realize sealed through the extrusion of mutual contact, for guaranteeing sealed effect, require the sealed face of these two seal packing to laminate completely, this installation accuracy requirement to the door body (2) and box (1) is higher. The junction of box (1) and the door body (2) is the echelonment, and the connection face of first plane and second plane is approximate vertical plane, and the sealed length between sealed packing of graphite tetrafluoro (3a) and the sealed packing of silica gel (3c) is the longest like this, and thermal-insulated effect is good, but the processing degree of difficulty of the box and the door body of approximate vertical plane is big, consumes the material many.
SUMMERY OF THE UTILITY MODEL
The applicant provides a door frame seal structure of high low temperature damp heat test box, and installation accuracy requires lowly, the leakproofness is good, improve the thermal-insulated effect of sealing strip, save material to shortcomings such as the door frame seal structure of above-mentioned current high low temperature damp heat test box in the sealing strip heat-proof effect general, the installation accuracy requires highly, the door frame processing degree of difficulty is big.
The utility model discloses the technical scheme who adopts as follows:
the utility model provides a door frame seal structure of high low temperature damp and hot test box, the connecting gap department of box and the door body set up a plurality of sealing strips, and the second lateral wall, kink and the sealing of sealing strip enclose into the hollow seal chamber of cross-section for having the convex polygon more than the four sides.
As a further improvement of the above technical solution:
the cross section of the hollow sealed cavity is quadrilateral.
The sealing part is arc-shaped.
The first side wall and the second side wall of the sealing strip form a hook shape, so that the sealing strip is fixed on the door body or the box body.
The connecting gap between the box body and the door body is in a step shape and sequentially comprises a first platform, a connecting inclined plane and a second platform from outside to inside, the two sealing strips are respectively arranged on the first platform and the second platform, and the inclination angle α of the connecting inclined plane is 40-50 degrees.
The first side wall of the first sealing strip is arranged on a door body outer frame close to the outside of the test box, and the first side wall of the second sealing strip is arranged on a box body inner frame close to the inside of the test box.
The door body inner frame of the door body, the first side wall of the sealing strip and the door body outer frame are fixed through fasteners.
The door body is enclosed by the door body outer frame and the door body inner frame, the door body outer frame or the door body inner frame which is close to the outer portion of the test box and is arranged at the connecting gap is sunken towards the inner portion of the door body to form a first mounting groove, and the first side wall of the first sealing strip is arranged in the first mounting groove.
The box is enclosed to close by box frame and box inside casing and forms, and the box inside casing or the box frame that are close to the test box inside in connection space department are sunken to the box inside and are formed the second mounting groove, and the first lateral wall of second sealing strip is installed in the second mounting groove.
The edge of the sealing portion remote from the second side wall has a projecting sealing lip.
The utility model has the advantages as follows:
the utility model discloses setting up multichannel sealing strip in the inside connection space department of being close to the proof box, the sealing strip has the sealed chamber of convex polygon cross-section, and the air volume in sealed chamber is bigger, and thermal-insulated effect is better. When the door body is closed, the bending part is bent and deformed towards the width direction of the connecting gap, the air volume in the sealing cavity can be kept not to be reduced, and the heat insulation effect of the sealing strip is guaranteed to the maximum extent, so that the door body has a better heat insulation effect, excessive sealing parts and heat insulation plates are not needed, and materials can be saved. When the cross section of the hollow sealing cavity of the sealing strip is in a quadrilateral shape, the heat insulation effect is good, and materials are saved most.
The utility model discloses be equipped with between the first platform of joint space department and second platform and connect the inclined plane. When the connecting inclined plane of 40-50 degrees is used, the heat insulation effect of the sealing strip is good, so that the temperature of the outer frame of the door body and the outer frame of the box body can not exceed 40 ℃ when the internal temperature of the test box reaches 180 ℃, and therefore, the connecting inclined plane structure is adopted, the materials of the box body and the door body are saved, and the processing difficulty of the ladder shape is reduced.
The utility model discloses a through rivet fixation between sealing strip, door body frame and the door body inside casing, the seam crossing of door body frame and inside casing can not the fracture deformation when guaranteeing expend with heat and contract with cold, avoids the silica gel sealing strip to deviate from.
Drawings
Fig. 1 is a sectional view of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Fig. 3 is an enlarged view of the first sealing strip of the present invention installed on the door body.
Fig. 4 is an enlarged view at B in fig. 2.
In the figure: 1. a box body; 2. a box body outer frame; 3. an inner frame of the box body; 4. a door body; 5. a door body outer frame; 6. a door body inner frame; 7. a stainless steel backing plate; 8. reinforcing ribs; 9. a heat tracing band; 10. a heat insulation plate; 11. a first seal strip; 12. a first side wall; 13. a second side wall; 14. a bending section; 15. a sealing part; 16. a sealing lip; 17. a hollow sealed cavity; 18. a second seal strip; 19. riveting; 20. a heat-insulating layer; 21. a hinge; 22. a first platform; 23. a connecting inclined plane; 24. a second platform.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the door 4 of the present invention is hinged to one side of the case 1 by a hinge 21. A first sealing strip 11 and a second sealing strip 18 are arranged at a connecting gap between the box body 1 and the door body 4, as shown in FIG. 2, the first sealing strip 11 is positioned on the door body 4 close to the outside of the test box, and the second sealing strip 18 is positioned on the box body 1 close to the inside of the test box. As shown in fig. 3, the first side wall 12 and the second side wall 13 of the first sealing strip 11 are formed into a hook shape, as shown in fig. 4, the first side wall 12 and the second side wall 13 of the second sealing strip 18 are formed into a smaller hook shape, the second side wall 13, the bent portion 14 and the sealing portion 15 enclose a hollow sealing cavity 17, and the cross-sectional shape of the hollow sealing cavity 17 is a convex polygon with more than four sides, in this embodiment, a quadrangle; sealing portion 15 is the arc, and sealing portion 15 keeps away from the edge of second lateral wall 13 and has convex seal lip 16, and seal lip 16 has increased the area of contact of sealing strip with door body 4 and box 1, improves sealed effect.
As shown in fig. 2 and 3, the door body 4 is formed by enclosing a door body outer frame 5 and a door body inner frame 6, a stainless steel backing plate 7 is fixedly welded on the door body inner frame 6 at a connecting gap position close to the outer part of the test box, the door body outer frame 5 and an internal reinforcing rib 8 thereof are sunken towards the inside of the door body 4 to form a first mounting groove, a first side wall 12 of a first sealing strip 11 and a heat tracing band 9 close to the first side wall 12 are mounted in the first mounting groove, the first side wall 12 isolates the door body inner frame 6 from the door body outer frame 5, and the heat tracing band 9 is opened at a test temperature of below 5 ℃ and is used for heating the sealing strip, so that the sealing strip can keep good elasticity and sealing performance at a lower test. As shown in fig. 3, the door inner frame 6, the stainless steel backing plate 7, the first side wall 12 and the door outer frame 5 are riveted together by rivets 19. When the door 4 is closed, the sealing portion 15 of the first weather strip 11 is pressed against the box body 1, the bent portion 14 is bent and deformed, and the sealing lip 16 is abutted against the box body 1. As shown in FIG. 2, the box body 1 is formed by enclosing a box body outer frame 2 and a box body inner frame 3, the box body inner frame 3 close to the inside of the test box at the connecting gap is sunken towards the inside of the box body 1 to form a second mounting groove, a first side wall 12 of a second sealing strip 18 is fixedly bonded with a side wall of the second mounting groove, and a heat insulation plate 10 and a heat tracing band 9 are arranged in the second mounting groove. When the door body 4 is closed, the sealing portion 15 of the second weather strip 18 is pressed against the door body 4, the bent portion 14 is bent and deformed, and the sealing lip 16 is abutted against the door body 4.
The connecting gap between the box body 1 and the door body 4 is in a step shape and sequentially comprises a first platform 22, a connecting inclined surface 23 and a second platform 24 from outside to inside, a first sealing strip 11 is arranged on the first platform 22, a second sealing strip 18 is arranged on the second platform 24, the inclined angle α of the connecting inclined surface 23 is 40-50 degrees, in the embodiment, the angle is 45 degrees, heat preservation layers 20 are respectively arranged in the box body 1 and the door body 4, the heat preservation layers 20 are made of glass wool or polyurethane, the temperature transmission between the inside and the outside of the test box is isolated, the temperature transmission is used for keeping the inside of the test box, and the sealing strips are made of silicon rubber.
The utility model discloses set up second sealing strip 18 as first layer seal structure in the joint space department of being close to test box inside, set up first sealing strip 11 as second layer seal structure in the joint space department of being close to test box outside, first sealing strip 11 and second sealing strip 18 have tetragonal seal chamber, and the air volume is bigger, and easily buckles and warp, because the coefficient of heat conductivity of air is less than silicon rubber, the air volume in the seal chamber is bigger, its thermal-insulated effect is better; when the door body 4 is closed, the bending part 14 bends and deforms towards the width direction of the connecting gap, so that the air volume in the sealing cavity can be kept from being reduced, and the heat insulation effect of the sealing strip is ensured to the maximum extent, therefore, the door body has better heat insulation effect, excessive sealing parts and heat insulation plates are not needed, and materials can be saved; the connecting inclined plane 23 is arranged between the first platform 22 and the second platform 24 at the connecting gap, when the connecting inclined plane 23 is used for 40-50 degrees, the temperature of the door body outer frame 5 and the temperature of the box body outer frame 2 can not exceed 40 ℃ due to the good heat insulation effect of the sealing strip when the internal temperature of the test box reaches 180 ℃, so that the connecting inclined plane 23 structure is adopted, the materials of the box body 1 and the door body 4 are saved, and the processing difficulty of the step shape is reduced.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention. For example, more than two sealing strips are arranged at the connecting gap, so that the purpose of good heat insulation effect of the invention can be achieved.
Claims (10)
1. The utility model provides a door frame seal structure of high low temperature damp and hot test box which characterized in that: a plurality of sealing strips are arranged at a connecting gap between the box body (1) and the door body (4), and a hollow sealing cavity (17) with a convex polygon with more than four sides on the cross section is enclosed by a second side wall (13), a bending part (14) and a sealing part (15) of each sealing strip.
2. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 1, characterized in that: the cross section of the hollow sealed cavity (17) is quadrilateral.
3. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 1, characterized in that: the sealing part (15) is arc-shaped.
4. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 1, characterized in that: the first side wall (12) and the second side wall (13) of the sealing strip are formed into a hook shape, so that the sealing strip is fixed on the door body (4) or the box body (1).
5. The door frame sealing structure of the high-low temperature damp-heat test box according to claim 1, characterized in that a connecting gap between the box body (1) and the door body (4) is stepped, and comprises a first platform (22), a connecting inclined plane (23) and a second platform (24) from outside to inside in sequence, the two sealing strips are respectively arranged on the first platform (22) and the second platform (24), and the inclination angle α of the connecting inclined plane (23) is 40-50 degrees.
6. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 1, characterized in that: the two sealing strips are arranged, the first side wall (12) of the first sealing strip (11) is arranged on an outer frame of the door body (4) close to the outside of the test box, and the first side wall (12) of the second sealing strip (18) is arranged on an inner frame (3) of the box body close to the inside of the test box.
7. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 6, characterized in that: the door body inner frame (6) of the door body (4), the first side wall (12) of the sealing strip and the door body outer frame (5) are fixed by fasteners.
8. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 6, characterized in that: the door body (4) is formed by enclosing a door body outer frame (5) and a door body inner frame (6), the door body outer frame (5) or the door body inner frame (6) which is close to the outer part of the test box at the connecting gap is sunken towards the inside of the door body (4) to form a first mounting groove, and a first side wall (12) of a first sealing strip (11) is arranged in the first mounting groove.
9. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 6, characterized in that: the box body (1) is formed by enclosing the box body outer frame (2) and the box body inner frame (3), the box body inner frame (3) or the box body outer frame (2) close to the inside of the test box at the connecting gap position is sunken towards the inside of the box body (1) to form a second mounting groove, and the first side wall (12) of the second sealing strip (18) is installed in the second mounting groove.
10. The door frame sealing structure of the high-low temperature damp-heat test chamber according to claim 1, characterized in that: the edge of the sealing portion (15) remote from the second side wall (13) has a projecting sealing lip (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979629.3U CN210370420U (en) | 2019-06-27 | 2019-06-27 | Door frame sealing structure of high-low temperature damp-heat test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920979629.3U CN210370420U (en) | 2019-06-27 | 2019-06-27 | Door frame sealing structure of high-low temperature damp-heat test box |
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| Publication Number | Publication Date |
|---|---|
| CN210370420U true CN210370420U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920979629.3U Active CN210370420U (en) | 2019-06-27 | 2019-06-27 | Door frame sealing structure of high-low temperature damp-heat test box |
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| CN (1) | CN210370420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736694A (en) * | 2021-01-18 | 2021-04-30 | 宁波共盛电气科技有限公司 | High-low voltage switch cabinet convenient to install |
| CN114776199A (en) * | 2022-05-05 | 2022-07-22 | 无锡帕捷科技有限公司 | High and low temperature resistant sealing strip and test box |
-
2019
- 2019-06-27 CN CN201920979629.3U patent/CN210370420U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736694A (en) * | 2021-01-18 | 2021-04-30 | 宁波共盛电气科技有限公司 | High-low voltage switch cabinet convenient to install |
| CN112736694B (en) * | 2021-01-18 | 2024-04-23 | 宁波共盛电气科技有限公司 | High-low voltage switch cabinet convenient to install |
| CN114776199A (en) * | 2022-05-05 | 2022-07-22 | 无锡帕捷科技有限公司 | High and low temperature resistant sealing strip and test box |
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