Low-temperature box sealing device

Abstract

The utility model discloses a low-temperature box sealing device which comprises an edge wrapping strip fixedly wrapping the side wall of a containing groove formed in the top face of a low-temperature box. The two insertion strips are symmetrically arranged on the inner walls of the two sides of the edge covering strip; the sliding insertion plate assembly is in sliding insertion connection with the insertion strip, the end, inserted into the containing groove, of the sliding insertion plate assembly is in a concave semicircle shape, and the semicircle and the edge covering strip at the sealed end of the containing groove are spliced into a whole circle; the sealing lantern ring assembly is composed of a first lantern ring assembly and a second lantern ring assembly which are in a semi-arc shape and spliced in an inserted mode. According to the utility model, by arranging the structure that the sliding insertion plate assembly is inserted into the insertion strip, the accommodating groove is preliminarily blocked, and the circular hole is formed in the sealed end of the accommodating groove for the clamp connecting rod to penetrate through; the sealing lantern ring assembly composed of the first lantern ring assembly and the second lantern ring assembly is arranged and sequentially inserted into the annular gaps between the clamp connecting rod and the sliding insertion plate assembly and between the clamp connecting rod and the edge covering strip, and therefore the phenomenon that a refrigerating medium in a low-temperature box overflows when an experiment is conducted is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to low temperature experiment equipment technical field, concretely relates to a low temperature box sealing device. BACKGROUND

[0002] Composite materials are widely used in the fields of aerospace, automobile industry and marine engineering, and the research on the mechanical properties of composite materials under extreme low temperature environment is particularly important. In order to simulate the actual working condition, the low temperature mechanical property test of composite materials is usually carried out in a low temperature box to ensure that the stress performance of the test piece under low temperature condition is close to the real environment.

[0003] In actual test, the volume of the tensile test bench is large, and it cannot be completely placed in a small low temperature box, so a containing groove is generally formed in the top and bottom of the door frame of the low temperature box, and the tensile test bench or the low temperature box is translated, so that the tensile part structure (upper and lower clamps, clamp connecting rods, etc.) of the tensile test bench enters the low temperature box, and the clamp connecting rod is clamped into the containing groove. When the low temperature box is applied to the tensile test under this condition, in order to prevent the refrigerant such as liquid nitrogen in the low temperature box from escaping outward from the containing groove, a special device is needed to seal the containing groove to ensure the sealing of the whole low temperature box.

[0004] Therefore, the low temperature box sealing device is provided to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to solve the above problems, provide a kind of low temperature box sealing device, containing groove in the top and bottom of low temperature box door frame can be sealed, and it is convenient to disassemble and assemble.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A kind of low temperature box sealing device, comprising: edge strip, fixedly covered on the side wall of containing groove formed in the top surface and bottom surface of low temperature box;Two insert strips, symmetrically arranged on the inner wall of the two sides of the edge strip;Sliding insert plate assembly, slidingly inserted with the insert strip, and the end inserted into the containing groove is concave semicircle, the semicircle and the edge strip of the sealing end of the containing groove are spliced into a whole circle, so that clamp connecting rod is provided;Sealing sleeve ring assembly, which is composed of two first sleeve ring assemblies and second sleeve ring assemblies, is formed by splicing the two semicircle arcs, and is used for sleeving on the outer wall of the clamp connecting rod to block the annular gap between the clamp connecting rod, the edge strip and the sliding insert plate assembly.

[0008] Further, the sliding plug-in plate assembly comprises a blocking plate, a plug-in plate fixedly arranged at the bottom of the blocking plate, plug-in grooves arranged at both sides of the plug-in plate and used for plug-in cooperation with the plug-in strips, a circular arc groove arranged at one end of the blocking plate and the plug-in plate inserted into the accommodating groove, and a fixing block fixedly arranged at the other end of the blocking plate.

[0009] Further, the top and bottom of the cryogenic box door frame are provided with mounting grooves in communication with the accommodating groove and used for clamping the fixing block, the groove bottom of the mounting groove is provided with a plurality of threaded holes, and the fixing block is detachably arranged in the mounting groove through screwing cooperation with the threaded holes.

[0010] Further, the top of the blocking plate is provided with a buckling groove.

[0011] Further, the first loop assembly comprises a half-arc plate, a limiting half-loop plate fixedly arranged at the top of the half-arc plate, dovetail type plug-in blocks fixedly arranged at both ends of the half-arc plate, and sealing rubber strips fixedly arranged on the inner wall and the outer wall of the half-arc plate, the half-arc plate of the second loop assembly is provided with plug-in grooves at both ends and used for plug-in cooperation with the plug-in blocks, and the rest of the second loop assembly is the same as the first loop assembly.

[0012] Further, the top surface of the first loop assembly and the second loop assembly is fixedly provided with a pull handle.

[0013] The beneficial effects of the utility model lie in:

[0014] The utility model discloses a sliding plug-in plate assembly and the structure of plug-in strip, and the accommodating groove is preliminarily blocked and convenient to dismount, and the circular hole is formed at the accommodating groove sealing end after installation, so that the clamp connecting rod can be arranged, the sealing loop assembly is formed by the first loop assembly and the second loop assembly, and the clamp connecting rod is inserted into the annular gap between the sliding plug-in plate assembly and the edge strip, the further blocking and sealing of the accommodating groove are realized, and the overflow of the refrigerating medium in the cryogenic box during the experiment is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification provide further understanding of the utility model, and the schematic embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0016] Figure 1 It is the use position schematic view of an embodiment of the utility model;

[0017] Figure 2 It is the use position schematic view of an embodiment of the utility model; Figure 1 It is the structure schematic view of A of the utility model;

[0018] Figure 3 The main body structure split schematic view of one embodiment of the utility model;

[0019] Figure 4 The sliding plugboard assembly structure schematic view of one embodiment of the utility model;

[0020] Figure 5 The sealing sleeve ring assembly structure schematic view of one embodiment of the utility model;

[0021] Figure 6 The sealing sleeve ring assembly structure schematic view of one embodiment of the utility model;

[0022] Figure 7 The sealing sleeve ring assembly cooperation schematic view of one embodiment of the utility model.

[0023] In the drawing: 1, the edge covering strip; 2, the low temperature box; 3, the accommodating groove; 4, the plug strip; 5, the sliding plugboard assembly; 51, the blocking plate; 52, the plug-in plate; 53, the insertion slot; 54, the circular arc groove; 55, the fixed block; 6, the clamp connecting rod; 7, the sealing sleeve ring assembly; 71, the first sleeve ring assembly; 711, the half arc plate; 712, the limiting half ring plate; 713, the plug block; 714, the sealing rubber strip; 72, the second sleeve ring assembly; 721, the plug-in slot; 8, the installation groove; 9, the screw hole; 10, the buckle groove; 11, the pull handle. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The embodiments in the application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] As Figures 1-7 shown, the utility model provides a kind of low temperature box sealing device, comprising:

[0026] Edge covering strip 1 is fixedly covered on the side wall of accommodating groove 3 opened in the top surface and bottom surface of low temperature box 2;Two plug strips 4 are symmetrically arranged on the inner wall of edge covering strip 1 on both sides;Sliding plugboard assembly 5 is slidably plugged with plug strip 4, and the end inserted into accommodating groove 3 is concave semicircle, and the semicircle is combined with the edge covering strip 1 of the sealing end of accommodating groove 3 as a whole circle, to be provided with clamp connecting rod 6;Sealing sleeve ring assembly 7 is formed by first sleeve ring assembly 71 and second sleeve ring assembly 72, which are semicircular arc and are combined by inserting each other, for sleeving on the outer wall of clamp connecting rod 6, to block the annular gap between clamp connecting rod 6 and edge covering strip 1 and sliding plugboard assembly 5.

[0027] In use, the sliding plug plate assembly 5 is pulled out of the insertion strip 4 to expose the accommodation groove 3 and the edge strip 1, then the tensile test bench or the low-temperature box 2 is translated to make the upper and lower clamps of the tensile test bench and the clamp connecting rod 6 enter the inner cavity of the low-temperature box 2, and the clamp connecting rod 6 is clamped into the accommodation groove 3, and then the sliding plug plate assembly 5 is re-inserted with the insertion strip 4. At this time, since a ring-shaped gap is formed between the sliding plug plate assembly 5 and the clamp connecting rod 6 and the edge strip 1, the first grommet assembly 71 and the second grommet assembly 72 are sequentially inserted into the ring-shaped gap and are inserted with each other, the inner wall of the sealing grommet assembly 7 formed by the two is abutted with the clamp connecting rod 6, and the outer wall is abutted with the sliding plug plate assembly 5 and the edge strip 1, so that the ring-shaped gap is blocked and sealed, and the overflow of the refrigerant in the low-temperature box 2 during the experiment is avoided.

[0028] In an embodiment, the sliding plug plate assembly 5 includes a blocking plate 51, an insertion plate 52 fixedly arranged at the bottom of the blocking plate 51, insertion grooves 53 arranged at both sides of the insertion plate 52 and used for insertion with the insertion strip 4, a circular arc groove 54 arranged at one end of the blocking plate 51 and the insertion plate 52 inserted into the accommodation groove 3, and a fixing block 55 fixedly arranged at the other end of the blocking plate 51.

[0029] In this way, the operator can easily push and pull the blocking plate 51 and the insertion plate 52 by holding the fixing block 55, so that the insertion grooves 53 on the insertion plate 52 are inserted with or separated from the insertion strip 4, the installation and removal of the sliding plug plate assembly 5 on the insertion strip 4 are realized, and the circular arc groove 54 can be combined with the edge strip 1 at the sealing end of the accommodation groove 3 to form a whole circle, thereby facilitating the subsequent installation of the sealing grommet assembly 7.

[0030] In an embodiment, the top and bottom of the door frame of the low-temperature box 2 are provided with installation grooves 8 in communication with the accommodation groove 3, which are used for clamping the fixing block 55. The groove bottom of the installation groove 8 is provided with a plurality of threaded holes 9, and the fixing block 55 is detachably arranged in the installation groove 8 by screwing cooperation of the fixing block 55 and the threaded holes 9.

[0031] In this way, the clamping of the fixing block 55 into the installation groove 8 can make the front surface of the fixing block 55 flush with the end surface of the door frame of the low-temperature box 2, so as to ensure the normal opening and closing and good sealing of the door of the low-temperature box 2. When the low-temperature box 2 is in use, the fixing block 55 is fixed in the installation groove 8 by screwing cooperation with the threaded holes 9, so as to prevent the sliding plug plate assembly 5 from sliding or even separating from the insertion strip 4, thereby affecting the sealing performance of the low-temperature box 2.

[0032] In an embodiment, the top of the blocking plate 51 is provided with a buckle groove 10.

[0033] In this way, when the sliding plug plate assembly 5 is removed, the operator can insert the fingers into the buckle groove 10 to obtain a good force point, and then pull the blocking plate 51 outward to drive the sliding plug plate assembly 5 to slide away from the insertion strip 4.

[0034] In an embodiment, the first grommet assembly 71 comprises a half-arc plate 711, a limiting half-ring plate 712 fixedly arranged on the top of the half-arc plate 711, dovetail type plug blocks 713 fixedly arranged at both ends of the half-arc plate 711, and sealing rubber strips 714 fixedly arranged on the inner wall and the outer wall of the half-arc plate 711, and the half-arc plate 711 of the second grommet assembly 72 is provided with plug slots 721 matched with the plug blocks 713 at both ends, and the rest of the second grommet assembly 72 is the same as the first grommet assembly 71.

[0035] In use, first, the half-arc plate 711 on the first grommet assembly 71 is inserted into the annular gap around the clamp link 6, then the second grommet assembly 72 is also clamped into the annular gap until the limiting half-ring plate 712 abuts against the top surface of the binding strip 1, and the plug blocks 713 and the plug slots 721 are inserted into each other, so that the two grommet assemblies are connected to form a whole, at this time, the sealing rubber strips 714 on the inner wall of the two grommet assemblies abut against the clamp link 6, and the sealing rubber strips 714 on the outer wall abut against the sliding plug assembly 5 and the binding strip 1, so as to achieve the plugging and sealing of the annular gap, and avoid the overflow of the refrigerant in the low-temperature box 2 during the experiment.

[0036] In an embodiment, the top surface of the first grommet assembly 71 and the second grommet assembly 72 is fixedly provided with a pull handle 11.

[0037] In this way, when the sealing grommet assembly 7 is disassembled, the first grommet assembly 71 and the second grommet assembly 72 can be pulled up through the pull handle 11, and then pulled out of the annular gap, which is convenient for disassembly.

[0038] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0039] It should be noted that if the present application involves directional indications (such as up, down, left, right, front, back, etc.) in the embodiments, the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0040] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, "a plurality of" means two or more. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist, also not within the protection scope required by the present application.

Claims

1. A cryogenic case seal, comprising: The utility model relates to a low temperature box door frame sealing structure, including: The edge band (1) is fixedly covered on the side wall of the accommodating groove (3) of the top surface and bottom surface of the low temperature box (2); Two insertion strips (4) are symmetrically arranged on the inner wall of the edge band (1) on both sides; The sliding insertion plate assembly (5) is slidably inserted with the insertion strip (4) and is inserted into one end of the accommodating groove (3) and is recessed in a semicircle, and the semicircle is combined with the edge band (1) of the sealing end of the accommodating groove (3) to form a whole circle to pass through the connecting rod (6) of the clamp; The sealing sleeve ring assembly (7) is composed of a first sleeve ring assembly (71) and a second sleeve ring assembly (72) which are semicircular and are combined with each other, and is used for sleeving on the outer wall of the connecting rod (6) of the clamp to block the annular gap between the connecting rod (6) of the clamp, the edge band (1) and the sliding insertion plate assembly (5).

2. A cryogenic tank seal as defined in claim 1, wherein, The sliding insertion plate assembly (5) includes a blocking plate (51), an insertion plate (52) fixedly arranged at the bottom of the blocking plate (51), an insertion groove (53) arranged on both sides of the insertion plate (52) and used for insertion cooperation with the insertion strip (4), an arc groove (54) arranged at one end of the blocking plate (51) and the insertion plate (52) inserted into the accommodating groove (3), and a fixed block (55) fixedly arranged at the other end of the blocking plate (51).

3. A cryogenic tank seal as defined in claim 2, wherein, The mounting groove (8) is arranged in communication with the accommodating groove (3) at the top and bottom of the door frame of the low temperature box (2) and is used for clamping the fixed block (55), and a plurality of threaded holes (9) are arranged in the groove bottom of the mounting groove (8), the fixed block (55) is detachably arranged in the mounting groove (8) through screwing cooperation with the threaded holes (9).

4. A cryogenic tank seal as defined in claim 3, wherein, A buckle groove (10) is arranged at the top of the blocking plate (51).

5. A cryogenic tank seal as defined in claim 4 wherein, The first sleeve ring assembly (71) includes a semicircular plate (711), a limiting semicircular plate (712) fixedly arranged at the top of the semicircular plate (711), a dovetail type insertion block (713) fixedly arranged at both ends of the semicircular plate (711) and a sealing rubber strip (714) fixedly arranged on the inner wall and the outer wall of the semicircular plate (711), the semicircular plate (711) at both ends of the second sleeve ring assembly (72) is provided with an insertion groove (721) matched with the insertion block (713), and the remaining structure of the second sleeve ring assembly (72) is the same as that of the first sleeve ring assembly (71).

6. A cryogenic tank seal as defined in claim 5 wherein, A pull handle (11) is fixedly arranged at the top of the first sleeve ring assembly (71) and the second sleeve ring assembly (72).

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