Static evaporation rate testing device of low-temperature container

Abstract

The utility model discloses a static evaporation rate testing device of low temperature container, including device main part, portable box body and fixing mechanism, portable box body includes box body and cover body, box body and cover body are connected through hinge structure, device main part is provided in the box body, fixing mechanism includes support frame, fixing band and fixing claw, and the support frame is provided with the fixing band and fixing claw. The supporting frames are arranged on the two sides of the cover body, the cover body is symmetrically provided with fixing penetrating holes allowing the fixing belt to penetrate through, a T-shaped open groove is formed in the middle of the box body, a T-shaped clamping block matched with the T-shaped open groove is arranged on one side of the fixing claw, and the fixing belt and the fixing claw are both arranged to be of a detachable structure relative to the cover body. The fixing belt penetrates through the fixing through holes in the two sides, the low-temperature container can be bound to the fixing claws on the side faces of the cover body to be fixed, the fixing device is arranged and can be matched with the portable box body to stably fix the low-temperature container, toppling and shaking of the low-temperature container are avoided, the measuring accuracy is improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of static evaporation rate testing technology, and in particular to a static evaporation rate testing device for a low-temperature container. Background Technology

[0002] The static evaporation rate test for cryogenic containers is an experiment used to evaluate the evaporation rate of test media such as liquid nitrogen within a cryogenic container. Static evaporation rate testing is a crucial part of the inspection and testing of cryogenic containers, enabling the evaluation of their thermal insulation performance. Currently, there are two main methods for static evaporation rate testing: the gravimetric method and the steam flow method. The gravimetric method assesses the static evaporation rate by detecting the change in the mass of the cryogenic container over 48 hours. However, due to its relatively large measurement error, this method has been gradually replaced by the steam flow method. The steam flow method uses a gas flow meter to measure the flow rate of gas evaporating through the meter per unit time, and calculates the static evaporation rate from the measured gas flow rate. However, the steam flow method requires the container to be left to stand for at least 48 hours, maintaining a stable static state, before connecting it to the test pipeline and continuously monitoring the flow rate for 24 hours, resulting in a lengthy measurement period.

[0003] In traditional technologies, when testing small cryogenic containers, such as portable cryogenic liquid nitrogen tanks, the small size of the container and the long testing time mean that during flow monitoring via the test pipeline, instability in the container's placement or accidental contact with the pipeline or container can cause it to shake and tip over. This can lead to vibrations and oscillations of the test medium, affecting test accuracy, and may even cause the vacuum layer to rupture and explode. Chinese utility model patent CN219320151U discloses a multifunctional portable cryogenic liquid container static evaporation rate testing device, including a main body, gas test pipeline, processor component mounting box, display and interaction device, and lid. While compact and portable, it is susceptible to shaking and tipping when measuring small cryogenic containers due to connection to the pipeline or accidental contact, leading to reduced test accuracy and even safety hazards. Therefore, in the field of static evaporation rate testing technology, there is a need for a static evaporation rate testing device for cryogenic containers that can securely fix the container to improve measurement accuracy and avoid safety hazards. Utility Model Content

[0004] In view of the above-mentioned prior art, the present invention provides a static evaporation rate testing device for cryogenic containers. The main technical problem to be solved is how to securely fix the cryogenic container to improve measurement accuracy and avoid safety hazards.

[0005] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0006] A static evaporation rate testing device for a low-temperature container includes a main body, a portable case, and a fixing mechanism. The portable case includes a box and a lid, which are connected by a hinge structure. The main body is disposed inside the box. The fixing mechanism includes a support frame, a fixing strap, and a fixing claw. The support frame is disposed on both sides of the lid. The lid has symmetrical fixing holes for the fixing strap to pass through. A T-shaped slot is provided in the middle of the box. A T-shaped locking block that mates with the T-shaped slot is provided on one side of the fixing claw. Both the fixing strap and the fixing claw are designed to be detachable relative to the lid.

[0007] Preferably, the fixing strap is configured as a hook and loop fastener structure that can be glued and detached.

[0008] Preferably, the side of the fixing claw away from the T-shaped block is provided as an arc-shaped fixing strip made of rubber.

[0009] Preferably, the support frame includes a first support rod, a second support rod, and a third support rod. J-shaped tracks are provided on both sides of the cover. A connecting slider that mates with the J-shaped track is provided at the upper end of the first support rod. The first support rod is connected to the J-shaped track through the connecting slider. The first support rod is hinged to the second support rod. A through hole is provided on the side of the first support rod and the second support rod away from the first support rod and the second support rod, respectively. Connecting posts that mate with the through holes are provided on both sides of the third support rod. The third support rod is detachably connected to the first support rod and the second support rod through the connecting posts.

[0010] Preferably, both the first support rod and the second support rod are made of steel, the connecting column is made of magnet, and magnet blocks are provided on the inner sides of both ends of the cover.

[0011] Preferably, the inner side of the cover is provided with a plurality of buckles that cooperate with the fixing claw, the fixing strap and the third support rod.

[0012] Preferably, the hinge structure includes an upper hinge, a lower hinge, a connecting ring, and a limiting block. The upper hinge is fixedly connected to the cover, and the lower hinge is fixedly connected to the box body. The upper hinge and the lower hinge are hinged together. A first slot is provided in the middle of the upper hinge. The upper end of the connecting ring is rotatably connected to the upper hinge through the first slot. A second slot is provided in the middle of the lower hinge. The lower end of the connecting ring is slidably and rotatably connected to the lower hinge through the second slot. A limiting block is provided at the lower end of the second slot.

[0013] The beneficial effects of this utility model are as follows: by setting the box body and the cover body, the main body of the device can be conveniently carried and moved. At the same time, the fixing claw can be detachably connected to the cover body through the T-shaped card block and the T-shaped slot. The fixing strap passes through the fixing holes on both sides and can be used to fix the low temperature container to the fixing claw on the side of the cover body. The support frame can support the cover body and prevent the device from being shaken and tipped over by the low temperature container.

[0014] In summary, by incorporating the aforementioned fixing device, this device, in conjunction with the portable case, can securely fix the cryogenic container, preventing it from tipping over or shaking, thereby improving measurement accuracy and reducing safety hazards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the fixed mechanism of a low-temperature container static evaporation rate testing device in its stored state, as described in an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the fixed mechanism of a static evaporation rate testing device for a low-temperature container in the present application embodiment;

[0017] Figure 3 This is a schematic diagram of the support frame structure in an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the connection structure between the first support rod and the J-shaped track in the storage state of the support frame in this application embodiment;

[0019] Figure 5 This is a schematic diagram of the connection structure between the first support rod and the J-shaped track in the unfolded state of the support frame in this embodiment of the application;

[0020] Figure 6 This is a schematic diagram of the hinge structure in an embodiment of this application;

[0021] Figure 7 This is a cross-sectional view of the hinge structure in an embodiment of this application;

[0022] Explanation of icon numbers:

[0023] 1. Main body of the device; 2. Portable case; 3. Fixing mechanism;

[0024] 201. Box body; 202. Lid body; 203. Hinge structure; 204. Magnetic block; 205. Buckle;

[0025] 211. Top hinge; 212. Bottom hinge; 213. Connecting ring; 214. Limiting block; 215. First slot; 216. Second slot;

[0026] 301. Support frame; 302. Fixing strap; 303. Fixing claw; 304. Fixing perforation; 305. T-slot; 306. T-block; 307. Arc-shaped fixing strip;

[0027] 311. First support rod; 312. Second support rod; 313. Third support rod; 314. J-shaped track; 315. Connecting slider; 316. Through hole; 317. Connecting column. Detailed Implementation

[0028] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0029] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Example 1

[0031] See attached document Figure 1-5This application provides a static evaporation rate testing device for a low-temperature container, comprising a device body 1, a portable case 2, and a fixing mechanism 3. The portable case 2 includes a box body 201 and a cover 202, which are connected by a hinge structure 203. The device body 1 is disposed inside the box body 201. The fixing mechanism 3 includes a support frame 301, a fixing strap 302, and a fixing claw 303. The support frame 301 is disposed on both sides of the cover 202. The cover 202 is symmetrically provided with fixing holes 304 for the fixing strap 302 to pass through. A T-shaped slot 305 is provided in the middle of the box body. A T-shaped locking block 306 that cooperates with the T-shaped slot 305 is provided on one side of the fixing claw 303. Both the fixing strap 302 and the fixing claw 303 are configured to be detachable relative to the cover 202. This device, by incorporating the housing 201 and cover 202, allows for convenient carrying and movement of the main body 1. The fixing claw 303 can be detachably connected to the cover 202 via the T-shaped locking block 306 and the T-shaped slot 305. The fixing strap 302 passes through the fixing holes 304 on both sides, securing the cryogenic container to the fixing claw 303 on the side of the cover 202. The support frame 301 supports the cover 202, preventing the device from shaking or tipping over due to the cryogenic container. In summary, this device, by incorporating the fixing mechanism, can securely hold the cryogenic container in conjunction with the portable housing 2, preventing it from tipping or shaking, improving measurement accuracy, and reducing safety hazards.

[0032] Preferably, the fixing strap 302 is configured as a hook and loop fastener structure that can be glued and detached. One side of the fixing strap 302 is a hook and loop fastener side, and the other side is a loop fastener side. The hook and loop fastener structure allows the fixing strap 302 to be easily passed through the fixing hole 304 and installed on the side of the cover 202 to secure the cryogenic container, or to be removed from the side of the cover 202, making operation convenient.

[0033] Preferably, the side of the fixing claw 303 away from the T-shaped locking block 306 is provided as an arc-shaped fixing strip 307 made of rubber. The arc-shaped fixing strip 307 is made of rubber, so that cryogenic containers of different specifications can be deformed by squeezing the arc-shaped fixing strip 307 to fit the container surface, thereby strengthening the fixing effect and adapting to containers of different sizes.

[0034] Example 2

[0035] See attached document Figure 1-7The difference between this embodiment and Embodiment 1 is that the support frame 301 includes a first support rod 311, a second support rod 312, and a third support rod 313. J-shaped tracks 314 are provided on both sides of the cover 202. A connecting slider 315 that mates with the J-shaped track 314 is provided at the upper end of the first support rod 311. The first support rod 311 is connected to the J-shaped track 314 via the connecting slider 315. The first support rod 311 and the second support rod 312 are hinged. A through hole 316 is provided on the side of both the first support rod 311 and the second support rod 312 away from their respective sides. Connecting posts 17 that mate with the through holes 316 are provided on both sides of the third support rod 313. The third support rod 313 is detachably connected to the first support rod 311 and the second support rod 312 via the connecting posts 17. (See attached figure) Figure 5 The vertical distance from the top right side of the J-shaped track 314 to the bottom surface of the box 201 is equal to the length of the first support rod 311. After the connecting slider 315 at the upper end of the first support rod 311 moves along the J-shaped track 314 to the right vertex, the second support rod 312 is rotated, and the connecting posts 17 on both sides of the third support rod 313 are inserted into the through hole 316, so that the second support rod 312, the first support rod 311, the second support rod 312, and the third support rod 313 form a right-angled triangle structure. After testing, the connecting posts 17 on both sides of the third support rod 313 are pulled out of the through hole 316, the third support rod 313 is removed, the second support rod 312 is rotated to overlap with the first support rod 311, and the connecting slider 315 at the upper end of the first support rod 311 is pushed to the top left side of the J-shaped track 314. The first support rod 311, the second support rod 312 and the third support rod 313 work together to effectively support the cover 202, thereby fixing the cryogenic container fixed to the side of the cover 202.

[0036] Preferably, the first support rod 311 and the second support rod 312 are both made of steel, the connecting post 17 is made of magnet, and magnet blocks 204 are provided on the inner sides of both ends of the cover 202. The connecting post 17 makes it easier to connect and disassemble the third support rod 313 with the first support rod 311 and the second support rod 312. At the same time, the magnet blocks 204 can attract the folded first support rod 311 and the second support rod 312 to the side of the cover 202, making storage more convenient.

[0037] Preferably, the inner side of the cover 202 is provided with a plurality of buckles 205 that cooperate with the fixing claws 303, the fixing straps 302 and the third support rod 313. The buckles 205 make it convenient to store the fixing claws 303, the fixing straps 302 and the third support rod 313, making them easy to carry and use.

[0038] Preferably, the hinge structure 203 includes an upper hinge 211, a lower hinge 212, a connecting ring 213, and a limiting block 214. The upper hinge 211 is fixedly connected to the cover 202, and the lower hinge 212 is fixedly connected to the box body 201. The upper hinge 211 and the lower hinge 212 are hinged together. A first slot 215 is provided in the middle of the upper hinge 211. The upper end of the connecting ring 213 is rotatably connected to the upper hinge 211 through the first slot 215. A second slot 216 is provided in the middle of the lower hinge 212. The lower end of the connecting ring 213 is slidably and rotatably connected to the lower hinge 212 through the second slot 216. A limiting block 214 is provided at the lower end of the second slot 216. (See attached figure) Figure 6-7 When the cover 202 is opened 90 degrees relative to the box 201 and perpendicular to the ground, the lower end of the connecting ring 213 slides to the lower end of the limiting block 214. The limiting block 214 blocks the upward sliding of the connecting ring 213, making the cover 202 more stable and secure when opened relative to the box 201. When it is necessary to close the cover 202 relative to the box 201, refer to the attached diagram. Figure 7 By moving the connecting ring 213 to the left, the connecting ring 213 is separated from the limiting block 214, allowing the cover 202 to close normally. The hinge structure 203 makes the opening and closing of the cover 202 and the box 201 more stable and reliable.

[0039] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A static evaporation rate testing device for a low-temperature container, comprising a device body (1), a portable case (2), and a fixing mechanism (3), wherein the portable case (2) comprises a box body (201) and a lid (202), the box body (201) and the lid (202) being connected by a hinge structure (203), and the device body (1) being disposed inside the box body (201), characterized in that, The fixing mechanism (3) includes a support frame (301), a fixing strap (302), and a fixing claw (303). The support frame (301) is disposed on both sides of the cover (202). The cover (202) is symmetrically provided with fixing holes (304) for the fixing strap (302) to pass through. A T-shaped slot (305) is provided in the middle of the box. A T-shaped locking block (306) that cooperates with the T-shaped slot (305) is provided on one side of the fixing claw (303). Both the fixing strap (302) and the fixing claw (303) are configured to be detachable relative to the cover (202).

2. The static evaporation rate testing device for a low-temperature container according to claim 1, characterized in that, The fixing strap (302) is configured as a hook and loop fastener structure that can be glued and detached.

3. The static evaporation rate testing device for a low-temperature container according to claim 1, characterized in that, The side of the fixing claw (303) away from the T-shaped block (306) is provided as an arc-shaped fixing strip (307) made of rubber.

4. The static evaporation rate testing device for a low-temperature container according to claim 1, characterized in that, The support frame (301) includes a first support rod (311), a second support rod (312), and a third support rod (313). J-shaped tracks (314) are provided on both sides of the cover (202). A connecting slider (315) that mates with the J-shaped track (314) is provided at the upper end of the first support rod (311). The first support rod (311) is connected to the J-shaped track (314) via the connecting slider (315). The first support rod (311) and the second support rod (302) are connected... The rod (312) is hinged. The first support rod (311) and the second support rod (312) are provided with through holes (316) on the side away from the first support rod (311) and the second support rod (312). The third support rod (313) is provided with connecting posts (17) on both sides that cooperate with the through holes (316). The third support rod (313) is detachably connected to the first support rod (311) and the second support rod (312) through the connecting posts (17).

5. The static evaporation rate testing device for a low-temperature container according to claim 4, characterized in that, The first support rod (311) and the second support rod (312) are both made of steel, the connecting column (17) is made of magnet, and magnet blocks (204) are provided on the inner sides of both ends of the cover (202).

6. The static evaporation rate testing device for a low-temperature container according to claim 5, characterized in that, The inner side of the cover (202) is provided with several buckles (205) that cooperate with the fixing claw (303), the fixing strap (302) and the third support rod (313).

7. The static evaporation rate testing device for a low-temperature container according to claim 6, characterized in that, The hinge structure (203) includes an upper hinge (211), a lower hinge (212), a connecting ring (213), and a limiting block (214). The upper hinge (211) is fixedly connected to the cover (202), and the lower hinge (212) is fixedly connected to the box body (201). The upper hinge (211) and the lower hinge (212) are hinged together. A first slot (215) is provided in the middle of the upper hinge (211). The upper end of the connecting ring (213) is rotatably connected to the upper hinge (211) through the first slot (215). A second slot (216) is provided in the middle of the lower hinge (212). The lower end of the connecting ring (213) is slidably and rotatably connected to the lower hinge (212) through the second slot (216). A limiting block (214) is provided at the lower end of the second slot (216).

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