A device for detecting the airtightness of an energy storage chassis

Abstract

The present application relates to a device for detecting the air tightness of an energy storage chassis, which includes a detection component for placing and fixing a box body and a plurality of sealing mechanisms for pressing and sealing the hole structures of the box body. The sealing mechanism includes a sealing cylinder arranged on the detection component and a first sealing ring sleeved and fixed on the telescopic rod of the sealing cylinder. The telescopic rod of the sealing cylinder is provided with a plurality of pressing components. The pressing component includes a pressing rod and a pressing sealing ring with a diameter smaller than the aperture of the hole structure of the box body. The pressing rod has a stepped shaft structure, and the small end thereof is inserted and slidably connected to the telescopic rod of the sealing cylinder. The pressing sealing ring is sleeved on the small end of the pressing rod, and the pressing sealing ring is located between the large end of the pressing rod and the first sealing ring. The sealing cylinder is provided with a pressing control part for controlling the telescopic movement and locking of the pressing rod. The present application can complete the air tightness detection of the box body on the premise of reducing the deformation of the box body.

Description

Technical Field

[0001] The present application relates to the field of airtightness detection technology, and particularly to a device for detecting the airtightness of an energy storage chassis. Background Art

[0002] Airtightness detection is mainly used to detect the sealing performance of parts and is currently widely applied to various parts that require sealing, such as energy storage chassis. Currently, the main methods for airtightness detection are the pressure drop method and the soaking method. Since the soaking method requires observing whether water enters and soaking the parts in water, it is easy to cause damage to the parts and the efficiency is relatively low. Therefore, the pressure drop method is currently mostly used for airtightness detection in large quantities and full inspection on the production line.

[0003] Currently, the devices for airtightness detection mainly use a sealing rubber sleeve outside the telescopic rod of a cylinder, and then through the telescopic movement of the telescopic end of the cylinder, the sealing rubber sleeve is pressed against the hole structure of the part to seal the hole structure of the part; then, the sealing plate is pressed against the opening of the part to achieve the overall sealing of the part. Finally, air with a certain pressure is introduced into the part, and compared with the standard qualified parts, whether the pressure difference of the tested part is within the same specified range as that of the standard qualified part, or whether the pressure drop generated by the tested part is within the specified range, to detect whether the airtightness of the part meets the standard.

[0004] However, in actual applications, for the parts inside the energy storage chassis, since the energy storage chassis is made of thin plates and there are several hole structures on the box wall of the energy storage chassis for cables and the like to pass through, directly using the telescopic end of the cylinder to press against the edge of the hole structure to seal the hole structure easily causes the structure around the hole structure of the energy storage chassis to deform, and the energy storage chassis undergoes plastic deformation, which will lead to an increase in the unqualified rate of the parts. Summary of the Invention

[0005] In order to complete the airtightness detection on the premise of reducing the deformation of box-shaped parts, the present application provides a device for detecting the airtightness of an energy storage chassis.

[0006] The device for detecting the airtightness of an energy storage chassis provided by the present application adopts the following technical solutions:

[0007] A device for detecting the air tightness of an energy storage machine box, comprising a detection assembly for placing and fixing a box body and several sealing mechanisms for pressing and sealing the hole structures of the box body. The sealing mechanism includes a sealing cylinder arranged on the detection assembly and a first sealing ring sleeved and fixed on the telescopic rod of the sealing cylinder. The telescopic rod of the sealing cylinder is provided with several pressing components. The pressing component includes a pressing rod and a pressing sealing ring with a diameter smaller than the aperture of the hole structure of the box body. The pressing rod is in a stepped shaft structure, and the small end is inserted and slidably connected to the telescopic rod of the sealing cylinder. The pressing sealing ring is sleeved on the small end of the pressing rod, and the pressing sealing ring is located between the large end of the pressing rod and the first sealing ring. The sealing cylinder is provided with a pressing control part for controlling the telescopic movement and locking of the pressing rod.

[0008] By adopting the above technical solution, when performing air tightness detection, only need to fix the box body through the detection assembly, and after sealing, introduce gas and observe the pressure drop in the box body; when sealing the box body, only need to control the telescopic rod of the sealing cylinder to extend towards the hole structure or opening of the box body, and make the end of the telescopic rod of the sealing cylinder pass through the hole structure or opening of the box body. During this process, make the pressing sealing ring fit on the edge of the hole structure or opening of the box body, and then make the pressing rod slide towards the sealing cylinder through the pressing control part, so that under the extrusion of the telescopic rod of the sealing cylinder and the large end of the pressing rod, the pressing sealing ring expands circumferentially outwards, so that the pressing sealing ring can fit on the edge of the hole structure or opening of the box body. During this process, the pressing sealing ring and the first sealing ring move towards each other, so that the hole structure and the edge of the opening of the box body are clamped between the pressing sealing ring and the first sealing ring, so as to seal the hole structure and the opening of the box body without excessive pressing on the side wall of the box body, thereby reducing the pressure on the hole structure and the edge of the opening of the box body, and reducing the possibility of deformation of the box body.

[0009] Optionally, the detection assembly includes a detection base for placing the box body and several detection cylinders for pressing the box body onto the detection base. The detection cylinders are connected to the detection base. The telescopic end of the detection base or several detection cylinders is provided with a detection sealing plate for sealing the opening of the box body. The detection base or the pressing rod is provided with an air pipe for introducing gas into the box body.

[0010] By adopting the above technical solution, when fixing the box body, only need to make the box body be pressed against the box body at the telescopic end of the detection cylinder, press the box body onto the detection base, and when the box body is provided with an opening area equal to the side wall of the box body, just make the detection sealing plate fit on the edge of the opening of the box body; then after sealing the hole structure or other openings of the box body, introduce air through the air pipe to perform air tightness detection.

[0011] Optionally, a sealing tube is provided between the first sealing ring and the pressing sealing ring. Both ends of the sealing tube are fixedly connected to the first sealing ring and the pressing sealing ring respectively, and the sealing tube is sleeved outside the pressing rod.

[0012] By adopting the above technical solution, the sealing tube can connect the first sealing ring and the pressing sealing ring, and when the first sealing ring and the pressing sealing ring move towards each other, the sealing tube can expand outwards circumferentially to assist in plugging the hole structure or the edge of the opening of the box body.

[0013] Optionally, the pressing control member includes a control motor and a control worm gear. The control motor is fixedly connected to the telescopic rod of the sealing cylinder and the output end of the control motor is inserted into the telescopic rod of the sealing cylinder. The pressing rod coaxially penetrates and is threadedly connected to the control worm gear. The output end of the control motor is in the shape of a worm and penetrates into the telescopic rod of the sealing cylinder, and the output end of the control motor meshes with the control worm gear.

[0014] By adopting the above technical solution, when plugging the hole structure of the sealed box body, only need to drive the control worm gear to rotate through the control motor, so that the pressing rod axially slides and then locks in place, to achieve relatively stable sealing and reduce the possibility that the first sealing ring and the pressing sealing ring move away from each other during the airtightness detection process.

[0015] Optionally, the outer peripheral edge of the end of the telescopic rod of the sealing cylinder facing the pressing rod is chamfered.

[0016] By adopting the above technical solution, since the telescopic rod of the sealing cylinder will expand the pressing sealing ring when the pressing rod slides towards the sealing cylinder, during this process, the chamfered telescopic rod of the sealing cylinder can effectively reduce the possibility of damaging the pressing sealing ring during the process of expanding the pressing sealing ring.

[0017] Optionally, the pressing sealing ring is of a hollow structure, and the elastic modulus of the inner circle of the pressing sealing ring is greater than that of the outer circle.

[0018] By adopting the above technical solution, during the process of the telescopic rod of the sealing cylinder expanding the pressing sealing ring, the outer peripheral edge of the pressing sealing ring can expand outwards circumferentially in time to timely press against the inner wall of the hole structure or the opening of the box body, reducing the possibility that the pressing sealing ring cannot press against the hole structure and the edge of the opening of the box body.

[0019] Optionally, a plurality of pressing plates that are spliced into a circle are embedded in the pressing sealing ring. The pressing plates are arc-shaped and are arranged on the same central axis as the pressing sealing ring. The cross-section of the pressing plate is V-shaped and the opening of the V-shape faces the central axis of the pressing sealing ring. The inner peripheral edge of the pressing plate is located on the sliding path of the large end of the pressing rod.

[0020] By adopting the above technical solution, since the large end of the pressing rod can be inserted into the hole structure or opening of the box body, and the inner ring edge of the pressing plate is located on the sliding path of the large end of the pressing rod, in the process of the pressing rod sliding toward the sealing cylinder, the large end of the pressing rod can be pressed against the inner ring edge of the pressing plate, so that the outer ring edge of the pressing sealing ring is relatively tightly attached to the inner wall of the box body, so as to achieve a relatively tight seal and reduce the impact on the air tightness detection.

[0021] Optionally, a compression ring is provided on the side of the first sealing ring facing away from the compression sealing ring, and the compression ring is sheathed and fixedly connected to the telescopic rod of the sealing cylinder.

[0022] By adopting the above technical solution, the compression ring can limit the elastic deformation of the first sealing ring away from the outer wall of the box body, so as to optimize the sealing effect of the first sealing ring.

[0023] Optionally, the telescopic rod of the sealing cylinder includes a telescopic rod body and several adaptive shafts, one end of the adaptive shaft is inserted and slidably connected to the telescopic rod body, the small end of the pressing rod is inserted and slidably connected to the other end of the adaptive shaft, and the sliding directions of the telescopic rod body, the adaptive shaft and the pressing rod are the same, the first sealing ring is sleeved on the adaptive shaft, and the pressing control part is arranged on the adaptive shaft.

[0024] By adopting the above technical solution, when the telescopic rod body of the sealing cylinder extends toward the hole structure or opening of the box body, the adapting shaft will shrink toward the sealing cylinder, and in this process, the first sealing ring on the adapting shaft can fit the outer wall of the box body, and at the same time, when the pressing rod shrinks toward the sealing cylinder, the pressing sealing ring and the first sealing ring can move towards each other, so that the adapting shaft can slide relative to the telescopic rod body, so that the edge of the hole structure or opening of the box body is relatively tightly clamped between the pressing sealing ring and the first sealing ring, while further reducing the pressure on the outer wall of the box body, thereby achieving relatively sufficient sealing of the hole structure or opening of the box body without excessive pressure on the outer wall of the box body, thereby effectively reducing the possibility of deformation of the box body.

[0025] Optionally, the adaptable shaft is inserted into one end of the telescopic rod body and has a polygonal columnar structure, and the telescopic rod body is provided with a plurality of stepped holes corresponding to the adaptable shaft, and the stepped holes are arranged with small ends opening axially, and the inner walls of the small ends of the stepped holes are adapted to the outer walls of the adaptable shaft, and the adaptable shaft is inserted into the stepped hole and the end of the adaptable shaft located in the stepped hole is fixedly connected with a limiting block having a cross-section larger than that of the adaptable shaft.

[0026] By adopting the above technical solution, the circumferential rotation of the adaptable shaft relative to the telescopic rod body can be limited to optimize stability during use; at the same time, the possibility of the adaptable shaft sliding out of the telescopic rod body can be reduced by limiting the sliding of the block in the large end of the stepped hole.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] When performing airtightness detection, only need to fix the box body through the detection component, introduce gas after sealing, and observe the pressure drop inside the box body; when sealing the box body, only need the sealing cylinder to control the telescopic rod to extend towards the hole structure or opening of the box body, and make the end of the telescopic rod of the sealing cylinder pass through the hole structure or opening of the box body. During this process, the pressing sealing ring is attached to the edge of the hole structure or opening of the box body, and then the pressing control part is used to make the pressing rod slide towards the sealing cylinder, so that under the extrusion of the telescopic rod of the sealing cylinder and the large end of the pressing rod, the circumferential direction of the pressing sealing ring expands outwards, so that the pressing sealing ring can be attached to the edge of the hole structure or opening of the box body. During this process, the pressing sealing ring and the first sealing ring move towards each other, so that the hole structure and the edge of the opening of the box body are clamped between the pressing sealing ring and the first sealing ring. At the same time, the pressing plate can press the pressing sealing ring relatively tightly against the inner wall of the box body, so as to seal the hole structure and the opening of the box body without the need to overly press the side wall of the box body, thereby reducing the pressure on the hole structure and the edge of the opening of the box body, and reducing the possibility of deformation of the box body. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of an embodiment of the present application.

[0030] Figure 2 is a schematic structural diagram of the sealing mechanism, the adapting shaft and the pressing assembly of the embodiment of the present application.

[0031] Figure 3 is Figure 2 the cross-sectional structural diagram of the A-A line in

[0032] Figure 4 is Figure 3 the enlarged structural diagram of part B in

[0033] Figure 5 is Figure 2 the enlarged structural diagram of part C in

[0034] Description of reference numerals: 1. Detection assembly; 11. Detection base; 111. Detection box; 112. Detection bracket; 113. Detection plate; 12. Detection cylinder; 121. Pressing plate; 13. Detection sealing plate; 2. Sealing mechanism; 21. Sealing cylinder; 211. Main body of telescopic rod; 212. Step hole; 22. First sealing ring; 221. Pressing ring; 3. Adaptation shaft; 31. Limiting block; 4. Pressing assembly; 41. Pressing rod; 411. Sealing tube; 42. Pressing sealing ring; 421. Pressing plate; 43. Pressing control member; 431. Control motor; 432. Control worm gear; 44. Pressing member; 441. Pressing plate; 442. Pressing rod; 443. Pressing spring; 444. First control rod; 445. Second control rod; 446. Control spring; 5. Air pipe. Detailed implementation mode

[0035] The following is further described in detail with reference to the attached Figure 1-4 drawings of the present application.

[0036] An embodiment of the present application discloses a device for detecting the air tightness of an energy storage machine box. Referring to Figure 1 the drawings, the device for detecting the air tightness of an energy storage machine box includes a detection assembly 1 and a sealing mechanism 2 for pressing and sealing the hole structure of the box body. The detection assembly 1 is used to fix the box body and seal the opening of the box body. Among them, the hole structure of the box body is a connection structure with an area smaller than the side wall area of the box body; the opening is opened on the side wall of the box body, and the opening area is smaller than the side wall of the box body.

[0037] The detection assembly 1 includes a detection base 11 for placing the box body and a plurality of detection cylinders 12. The detection cylinders 12 are used to press the box body onto the detection base 11. The detection base 11 includes a detection box 111, a detection bracket 112 and a detection plate 113. The detection bracket 112 is fixedly connected to the top of the detection box 111. The detection cylinder 12 is fixedly connected to the detection bracket 112, and the telescopic end of the detection cylinder 12 is arranged downward. The detection plate 113 is slidably connected to the top of the detection box 111 through two linear slide rails, and the detection plate 113 is located below the telescopic end of the detection cylinder 12 to adjust the position of the detection plate 113. Among them, a detection sealing plate 13 is fixedly connected to one side plate surface of the detection plate 113 facing the sealing mechanism 2 or the telescopic end of the detection cylinder 12. In the embodiment of the present application, the detection sealing plate 13 is fixedly connected to the detection plate 113, and the detection plate 113 is an elastic plate, such as a rubber plate or a silica gel plate; a pressing plate 121 is fixedly connected to the telescopic end of the detection cylinder 12 to press the box body onto the detection plate 113, and a pressure sensor for detecting the air pressure inside the box body is fixedly connected to the detection plate 113.

[0038] Of course, in other embodiments, the detection component 1 can also adopt a base and a cylinder. The base is in an L-shaped plate structure, and the cylinder is fixedly connected to the top of the base, and the telescopic end of the cylinder is arranged downward. When in use, the opening edge of the box body can be pressed against the base through the cylinder.

[0039] Referring to Figure 1 and Figure 2 , the sealing mechanism 2 includes a sealing cylinder 21 and a first sealing ring 22. The telescopic rod of the sealing cylinder 21 includes a telescopic rod main body 211 and a plurality of adapting shafts 3. The adapting shafts 3 are arranged corresponding to the number of hole structures arranged side by side at the same position of the box body or corresponding to the side opening of the box body. In the embodiment of the present application, for the hole structure of the box body corresponding to the same sealing mechanism 2, the adapting shaft 3 is arranged in three; for the side opening structure of the box body corresponding to the sealing mechanism 2, the adapting shaft 3 is arranged in one. The telescopic rod main body 211 is the piston rod of the sealing cylinder 21, and one end of the telescopic rod main body 211 away from the shell of the sealing cylinder 21 is in a plate structure. Wherein, the sealing cylinder 21 is installed on the top of the detection box 111 through a support, the first sealing rings 22 are sleeved and fixedly connected to the adapting shafts 3 one by one, and a pressing ring 221 is fixedly connected to the adapting shaft 3. The pressing ring 221 is located on the side of the first sealing ring 22 facing the telescopic rod main body 211 for pressing the first sealing ring 22 against the hole structure or the opening edge of the box body.

[0040] Furthermore, an air pipe 5 for introducing gas into the box body is arranged on the detection plate 113. The air pipe 5 is used to connect to a gas source, such as an air pump, etc. In the embodiment of the present application, the air pipe 5 penetrates through the detection plate 113 and the detection sealing plate 13, and a sealing arrangement is made between the air pipe 5 and the detection plate 113 and the detection sealing plate 13.

[0041] The adapting shaft 3 is axially inserted and slidably connected to the plate-shaped part of the telescopic rod main body 211, and the three adapting shafts 3 connected to the same telescopic rod main body 211 are parallel to each other, and the adapting shaft 3 is parallel to the telescopic rod main body 211.

[0042] Referring to Figure 3 and Figure 4 , specifically, one or three stepped holes 212 are provided at one end of the telescopic rod main body 211 in a plate shape corresponding to the adapting shaft 3. The stepped holes 212 are arranged corresponding to the adapting shaft 3 one by one. One end of the adapting shaft 3 facing the corresponding stepped hole 212 is in a stepped shaft structure. The stepped hole 212 is arranged with the small end facing away from the cylinder opening of the sealing cylinder 21, and the inner wall of the small end opening of the stepped hole 212 is adapted to the outer wall of the adapting shaft 3. The adapting shaft 3 is inserted into the stepped hole 212, and a limiting block 31 is fixedly connected to the part of the adapting shaft 3 located in the large end of the stepped hole 212. The cross-sectional area of the limiting block 31 is larger than the cross-sectional area of the adapting shaft 3, so that when the adapting shaft 3 slides, the limiting block 31 can abut against the step surface of the stepped hole 212, thereby restricting the adapting shaft 3 from sliding out of the telescopic rod main body 211.

[0043] Reference Figure 3 and Figure 4 The end of the adaptable shaft 3 away from the connected telescopic rod body 211 is provided with a pressing assembly 4, which includes a pressing rod 41 and a pressing sealing ring 42. The pressing rod 41 is arranged one by one corresponding to the adaptable shaft 3. The pressing rod 41 is a stepped shaft structure, and the small end of the pressing rod 41 is coaxially penetrated and slidably connected to the adaptable shaft 3. The pressing rod 41 is parallel to the connected adaptable shaft 3, and the large end of the pressing rod 41 is used to fit the pressing sealing ring 42 to the inner wall of the hole structure or the edge of the opening of the box body, that is, the large end of the pressing rod 41 is adapted to the hole structure or the opening structure, and the large end of the pressing rod 41 is cylindrical or plate-shaped, and when the large end of the pressing rod 41 corresponds to the hole structure, the diameter of the large end of the pressing rod 41 is smaller than the diameter of the hole structure of the box body; when the pressing rod 41 corresponds to the opening of the box body, the area of ​​the large end of the pressing rod 41 corresponds to the box body opening and is smaller than the box body opening area, so that the pressing rod 41 and the adaptable shaft 3 can be penetrated in the hole structure or opening of the box body. The air pipe 5 may also be arranged on the pressing rod 41 . Of course, it is preferred that the air pipe 5 is arranged on the detection plate 113 .

[0044] The compression seal ring 42 is placed on the small end of the compression rod 41, and a sealing tube 411 is provided between the compression seal ring 42 and the first sealing ring 22 for connecting the two. The sealing tube 411 is an elastic tube, such as a rubber bellows or a silicone bellows. The sealing tube 411 is placed on the small end of the adapting shaft 3 and the compression rod 41, one end of the sealing tube 411 is fixedly connected to the inner ring edge of the first sealing ring 22, and the other end of the sealing tube 411 is fixedly connected to the inner ring edge of the compression seal ring 42. The adapting shaft 3 is provided with a compression control member 43 for controlling the sliding of the compression rod 41 and the sliding locking.

[0045] When in use, it is only necessary to mortgage the opening edge of the box body against the detection sealing plate 13, and then the sealing cylinder 21 controls the telescopic rod body 211 to extend, and allows the adapting shaft 3 and the pressing rod 41 to pass through the hole structure or the opening edge of the box body, and in this process, the pressing ring 221 will mortgage the first sealing ring 22 against the edge of the hole structure of the box body or the opening edge, and at the same time, the small end of the adapting shaft 3 will shrink to the telescopic rod body 211; then the pressing control part 43 will control the pressing rod 41 to slide toward the connected adapting shaft 3, and in this process, the sealing tube 411 will shrink, and the end of the adapting shaft 3 will open the pressing sealing ring 42, so that the outer ring edge of the pressing sealing ring 42 can be mortgaged to the edge of the hole structure of the box body or the opening edge.

[0046] At the same time, due to the relative movement of the pressing rod 41 and the adapting shaft 3, the adapting shaft 3 may slide relative to the telescopic rod body 211. At this time, the sliding of the adapting shaft 3 relative to the telescopic rod body 211 can enable the edge of the hole structure and the edge of the opening of the box to be clamped between different first sealing rings 22 and the pressing sealing ring 42, while reducing the external pressure on the edge of the hole structure and the opening of the box; finally, gas is introduced into the box through the air pipe 5 for pressure monitoring to obtain the pressure drop in the box during the detection process, thereby realizing the airtightness detection; it can also effectively reduce the possibility of bending of the hole structure or the edge of the opening of the box due to external pressure. And because the sealing tube 411 connects the compressed sealing ring 42 and the first sealing ring 22, the gap between the compressed sealing ring 42 and the first sealing ring 22 can be sealed; and the compressed sealing ring 42 can be mortgaged to the edge of the hole structure or the opening of the box body, so that the first sealing ring 22 can fit relatively tightly to the edge of the hole structure or the opening, so as to achieve the premise of reducing the deformation of the box body and relatively fully completing the sealing process of the box body.

[0047] Of course, in other embodiments, the sealing mechanism 2 may also use a hydraulic cylinder and a sealing ring with a hollow structure, and the outer edge of the sealing ring is concavely formed with a sealing ring groove for clamping the edge of the box hole structure or the opening edge. The pressing component 4 uses an air pump to inflate the sealing ring, so that the sealing ring expands and clamps the hole structure or the opening edge of the box in the sealing ring groove for sealing; further, limiting rings are respectively provided on both sides of the axial direction of the sealing ring to limit the axial expansion of the sealing ring, so that the sealing ring can relatively fully fit the edge of the box hole structure or the opening edge.

[0048] Reference Figure 4 and Figure 5 Since the adaptable shaft 3 will stretch the sealing tube 411 and the pressed sealing ring 42 during the sliding process, in order to reduce the possibility of damage to the sealing tube 411 and the pressed sealing ring 42 during the process of stretching the sealing tube 411 and the pressed sealing ring 42, the opening edge of the end of the adaptable shaft 3 away from the connected telescopic rod body 211 is chamfered, preferably rounded.

[0049] Furthermore, the pressed sealing ring 42 has a hollow structure, and the elastic modulus of the inner ring of the pressed sealing ring 42 is greater than the elastic modulus of the outer ring, so that when the large end of the pressed rod 41 squeezes the pressed sealing ring 42, the outer ring edge of the pressed sealing ring 42 can expand in time and be mortgaged to the edge of the hole structure or the opening edge of the box body, so as to reduce the possibility of the pressed sealing ring 42 being attached to the first sealing ring 22 when the pressed sealing ring 42 is not pressed against the edge of the hole structure or the opening edge of the box body.

[0050] At the same time, in order to further enable the compression seal ring 42 to be relatively stably mortgaged to the inner wall of the box hole structure or the opening edge, a plurality of compression plates 421 are embedded inside the compression seal ring 42. The compression plates 421 are arc-shaped plate-like structures, and the plurality of compression plates 421 are spliced ​​together to form a circle. The cross section of the compression plate 421 is V-shaped and the V-shaped opening is arranged toward the central axis of the adaption shaft 3. The compression plate 421 is located at the outer ring edge of the compression seal ring 42, and the inner ring edge of the compression plate 421 is always located on the sliding path of the large end of the compression rod 41.

[0051] When in use, the compression seal ring 42 will expand, during this process, it will drive multiple compression plates 421 to disperse from each other, and make the outer ring of the compression plate 421 able to be mortgaged to the edge of the box hole structure. In the case where the opening of the box is provided with a folded edge, due to the limitation of the folded edge, the compression seal ring 42 will expand outward at the position of the box opening where the folded edge is not provided, so that when the compression rod 41 slides toward the adaptation axis 3, the large end of the compression rod 41 can mortgage the compression plate 421 to the edge of the box hole structure or the edge of the opening, so as to further make the compression seal ring 42 relatively tightly fit the edge of the box hole structure or the edge of the opening, so as to reduce the impact on the box sealing.

[0052] Reference Figure 4 and Figure 5 The pressing control member 43 includes a control motor 431 and a control worm gear 432, and the control motor 431 is fixedly connected to the outer wall of the adapting shaft 3. The end of the adapting shaft 3 away from the connected telescopic rod body 211 is a hollow tubular structure, and the adapting shaft 3 is open away from the telescopic rod body 211. The control worm gear 432 is coaxially connected to the inside of the adapting shaft 3, and the small end of the pressing rod 41 is coaxially penetrated in the control worm gear 432, and the pressing rod 41 is threadedly connected to the control worm gear 432. The output end of the control motor 431 penetrates into the inside of the adapting shaft 3, and the part of the output end of the control motor 431 located in the adapting shaft 3 is a worm-shaped structure, and the part of the control motor 431 located in the adapting shaft 3 is meshed with the control worm gear 432. Among them, the control motor 431 and the adaptable shaft 3 are sealed, for example, a sealing gasket is arranged between the control motor 431 and the outer wall of the adaptable shaft 3, and the output end of the control motor 431 is passed through the sealing gasket; or the output shaft of the control motor 431 and the adaptable shaft 3 are sealed by a rotating sealing ring.

[0053] Furthermore, a sliding groove extending axially is formed at the small end of the pressing rod 41, and a sliding block clamped in the sliding groove is fixedly connected to the inner wall of the adapting shaft 3 to limit the axial rotation of the pressing rod 41 relative to the adapting shaft 3, so that when the control motor 431 rotates and drives the control worm gear 432 to rotate, the pressing rod 41 can slide axially, thereby achieving the effect of assisting in sealing the hole structure or opening of the box.

[0054] In addition, since the adaptation shaft 3 is provided with a pressing control member 43, in order to optimize the stability during use, the small end of the adaptation shaft 3 has a multi-prismatic structure, such as a hexagonal prismatic structure. The inner wall of the small end of the stepped hole 212 also has a multi-prismatic structure, and the inner wall of the small end of the stepped hole 212 is adapted to the outer wall of the small end of the adaptation shaft 3, thereby restricting the circumferential rotation of the adaptation shaft 3 relative to the telescopic rod main body 211.

[0055] Of course, in other embodiments, the pressing control member 43 can also be set as a hydraulic cylinder, a pneumatic cylinder or an electric push cylinder, and the output shaft of the pressing control member 43 coaxially penetrates through the adaptation shaft 3 and is fixedly connected to the pressing rod 41.

[0056] Refer to Figure 4 and Figure 5 , since there will be a gap between adjacent two pressing plates 421 when the multiple pressing plates 421 are spread out, a pressing member 44 is provided at the large end of the pressing rod 41 for pressing the part of the outer ring of the pressing seal ring 42 located in the gap between adjacent pressing plates 421.

[0057] There are multiple pressing members 44, and the multiple pressing members 44 are arranged around the large end of the pressing rod 41. The pressing member 44 includes a pressing plate 441 and a pressing rod 442. The pressing plate 441 has an arc-shaped plate structure and is arranged in a fitting manner on the outer wall of the large end of the pressing rod 41. The pressing plates 441 of the multiple pressing members 44 are arranged around the central axis of the pressing rod 41. Among them, the outer diameter of the outer edge of the multiple pressing plates 441 is smaller than the aperture of the box hole structure, or the contour projection of the multiple pressing plates 441 when not spread out is located inside the opening, and the pressing plate 441 is arranged corresponding to the gap between adjacent pressing plates 421.

[0058] Refer to Figure 4 and Figure 5 , the pressing rod 41 has a tubular structure, and one end of the pressing rod 442 is fixedly connected to the pressing plate 441. The other end of the pressing rod 442 penetrates through the large end of the pressing rod 41 and extends into the inside of the pressing rod 41. The pressing rod 442 is arranged at an angle with the central axis of the pressing rod 41. The end of the pressing rod 442 connected to the pressing plate 441 is L1, and the end of the pressing rod 442 facing the central axis of the pressing rod 41 is L2. L1 is located between L2 and the pressing seal ring 42, so that when the pressing rod 442 extends in the direction away from the central axis of the pressing rod 41, L1 can generate a displacement towards the pressing seal ring 42, so as to press the pressing seal ring 42 against the inner wall of the box body. A pressing spring 443 is sleeved outside the pressing rod 442 for pressing the pressing rod 442 to contract towards the central axis of the pressing rod 41. The pressing spring 443 is located inside the large end of the pressing rod 41, and both ends of the pressing spring 443 are fixedly connected to the pressing rod 442 and the pressing rod 41 respectively.

[0059] Refer to Figure 4 andFigure 5 The first control rod 444 and the second control rod 445 are coaxially penetrated by the pressing rod 41, and the first control rod 444 and the second control rod 445 are arranged coaxially, and the second control rod 445 is fixedly connected to the inner wall of the adapting shaft 3. The second control rod 445 is located on the sliding path of the first control rod 444, and the end of the first control rod 444 away from the second control rod 445 is in a stepped shaft structure, and the transition surface of the first control rod 444 is in an arc surface structure, and the end of the pressing rod 442 located in the pressing rod 41 is abutted against the outer wall of the first control rod 444, and the end of the pressing rod 442 located in the pressing rod 41 is located on the sliding path of the transition surface of the first control rod 444.

[0060] Furthermore, a control spring 446 is disposed on the outer sleeve of the first control rod 444 to control the first control rod 444 to slide toward the second control rod 445 , and two ends of the control spring 446 are respectively fixedly connected to the first control rod 444 and the inner wall of the pressing rod 41 .

[0061] When the pressing rod 41 slides toward the adaptation axis 3, the second control rod 445 will abut against the first control rod 444, causing the first control rod 444 to slide toward the outside of the pressing rod 41, and push the pressing rod 442 to slide toward the outside of the pressing rod 41 through the transition surface of the first control rod 444, and in this process, push the pressing plate 441 to slide in the direction away from the central axis of the pressing rod 41, so that the pressing plate 441 can be mortgaged to the position of the pressing sealing ring 42 located between two adjacent pressing plates 421, so as to further optimize the sealing effect of the hole structure and opening of the box body, and achieve the effect of sealing the hole structure and opening of the box body relatively fully and conveniently while reducing the deformation of the box body.

[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for detecting the airtightness of an energy storage cabinet, characterized in that, Including: A detection component (1) for placing a fixed box body and detecting pressure; A plurality of sealing mechanisms (2) for pressing and sealing the hole structure of the box body. The sealing mechanism (2) includes a sealing cylinder (21) arranged on the detection component (1) and a first sealing ring (22) sleeved and fixed on the telescopic rod of the sealing cylinder (21); A plurality of pressing components (4) are arranged on the telescopic rod of the sealing cylinder (21). The pressing component (4) includes a pressing rod (41) and a pressing sealing ring (42) with a diameter smaller than the aperture of the box body hole structure. The pressing rod (41) is in a stepped shaft structure, and the small end is inserted and slidably connected to the telescopic rod of the sealing cylinder (21). The pressing sealing ring (42) is sleeved on the small end of the pressing rod (41), and the pressing sealing ring (42) is located between the large end of the pressing rod (41) and the first sealing ring (22). The sealing cylinder (21) is provided with a pressing control member (43) for controlling the telescopic movement and locking of the pressing rod (41); The pressing control member (43) includes a control motor (431) and a control worm gear (432). The control motor (431) is fixedly connected to the telescopic rod of the sealing cylinder (21), and the output end of the control motor (431) is inserted into the telescopic rod of the sealing cylinder (21). The pressing rod (41) is coaxially inserted and threadedly connected to the control worm gear (432). The output end of the control motor (431) is in a worm structure and penetrates into the telescopic rod of the sealing cylinder (21), and the output end of the control motor (431) meshes with the control worm gear (432); A plurality of pressing plates (421) that are spliced with each other to form a circle are embedded inside the pressing sealing ring (42). The pressing plates (421) are arc-shaped and arranged on the same central axis as the pressing sealing ring (42). The cross-section of the pressing plate (421) is V-shaped, and the opening of the V-shaped is oriented towards the central axis of the pressing sealing ring (42). The inner edge of the inner circle of the pressing plate (421) is located on the sliding path of the large end of the pressing rod (41); A pressing member (44) for pressing the part of the outer circle of the pressing sealing ring (42) located in the gap between adjacent pressing plates (421) is arranged at the large end of the pressing rod (41). The pressing member (44) includes a pressing plate (441) and a pressing rod (442). The pressing plate (441) is in an arc-shaped plate structure and is arranged in a fitting manner on the outer wall of the large end of the pressing rod (41); the pressing plates (441) of a plurality of pressing members (44) are arranged around the central axis of the pressing rod (41); the pressing plate (441) can press against the part of the pressing sealing ring (42) located between two adjacent pressing plates (421).

2. The device for detecting the airtightness of an energy storage cabinet according to claim 1, characterized in that: The detection assembly (1) comprises a detection base (11) for placing a box body and a plurality of detection cylinders (12) for pressing the box body onto the detection base (11); the detection cylinders (12) are connected to the detection base (11); a detection sealing plate (13) is provided at the telescopic end of the detection base (11) or the plurality of detection cylinders (12); the detection sealing plate (13) is used to seal an opening of the box body; the detection base (11) or the pressing rod (41) is provided with a gas pipe (5) for introducing gas into the box body.

3. The device for detecting the airtightness of an energy storage cabinet according to claim 1, characterized in that: A sealing tube (411) is provided between the first sealing ring (22) and the pressing sealing ring (42), two ends of the sealing tube (411) are respectively fixedly connected to the first sealing ring (22) and the pressing sealing ring (42), and the sealing tube (411) is sheathed on the pressing rod (41).

4. The device for detecting the airtightness of an energy storage cabinet according to claim 1, characterized in that: The outer ring edge of the telescopic rod of the sealing cylinder (21) facing the end of the pressing rod (41) is chamfered.

5. The device for detecting the airtightness of an energy storage cabinet according to claim 1, characterized in that: The pressed sealing ring (42) has a hollow structure, and the elastic modulus of the inner ring of the pressed sealing ring (42) is greater than the elastic modulus of the outer ring.

6. The device for detecting the airtightness of an energy storage cabinet according to claim 1, characterized in that: A compression ring (221) is provided on the side of the first sealing ring (22) facing away from the compression sealing ring (42), and the compression ring (221) is sheathed and fixedly connected to the telescopic rod of the sealing cylinder (21).

7. The device for detecting the airtightness of an energy storage cabinet according to claim 1, characterized in that: The telescopic rod of the sealing cylinder (21) comprises a telescopic rod body (211) and a plurality of adaptable shafts (3), one end of the adaptable shaft (3) is inserted into and slidably connected to the telescopic rod body (211), the small end of the pressing rod (41) is inserted into and slidably connected to the other end of the adaptable shaft (3), and the sliding directions of the telescopic rod body (211), the adaptable shaft (3) and the pressing rod (41) are the same, the first sealing ring (22) is sleeved on the adaptable shaft (3), and the pressing control member (43) is arranged on the adaptable shaft (3).

8. The device for detecting the airtightness of an energy storage cabinet according to claim 7, characterized in that: The adaptable shaft (3) is inserted into one end of the telescopic rod body (211) and has a multi-prism-shaped structure. The telescopic rod body (211) is provided with a plurality of stepped holes (212) corresponding to the adaptable shaft (3). The stepped holes (212) are arranged with small ends opening along the axial direction. The inner walls of the small ends of the stepped holes (212) are adapted to the outer walls of the adaptable shaft (3). The adaptable shaft (3) is inserted into the stepped holes (212). The end of the adaptable shaft (3) located in the stepped holes (212) is fixedly connected to a limiting block (31) having a cross section larger than that of the adaptable shaft (3).

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