A through-hull structure for a wading test chamber

Abstract

The present invention belongs to the technical field of the structural design of water-related experimental equipment, and particularly relates to a cabin-piercing structure of a water-related experimental cabin. It includes an L-shaped outlet pipe arranged on the outer wall of the outer shell, a cabin-piercing assembly arranged on the inner shell, and a data cable; the cabin-piercing assembly includes: an external thread connecting cylinder, an internal thread locking sleeve, a sealing rubber plug, and a rubber protection piece; the cabin-piercing structure of the water-related experimental cabin of the present application can ensure the stable fixed connection and effective sealing of the cabin-piercing structure. Among them, the double-end cabin-piercing structure of the water-related experimental cabin is applicable to various types of water-related experimental cabins, especially for the installation and connection of the cabin-piercing structure and sensors in the area below the water line of the experimental cabin. This cabin-piercing structure is convenient to install and use, and the overall structure is simple. By using two cabin-piercing assemblies to cooperate with the support connection assembly, it can be used to support and connect multiple sensors or monitoring devices. At the same time, the self-recovery ability of the spring is utilized to maintain the relative stability of the original detection position, and the data error caused by the change of the sensor position during the transmission of the shock wave is suppressed.

Description

Technical Field

[0001] The present invention belongs to the technical field of the structural design of water-related experimental equipment, and particularly relates to a cabin-piercing structure of a water-related experimental cabin. Background Art

[0002] The water-related double-hull experimental cabin is an experimental equipment used to study the vibration and the transmission path and characteristics of vibration waves caused by various equipment in a medium. During use, the test medium is injected into the interior of the experimental cabin, and a series of tests and measurements are realized by generating vibration waves through an internal excitation device. During this process, a series of sensors and collection devices need to be arranged at multiple positions inside and outside the experimental cabin to collect experimental data, and each sensor and data collection device is connected to an external data processing device through a cabin-piercing structure to collect and process data. Due to the vibration of the excitation system and the transmission of vibration waves, strong oscillations and impacts will be generated inside the experimental cabin, which easily causes medium leakage in the cabin-piercing structure, enabling the media inside and outside the inner and outer shells to flow into each other. At the same time, the existence of a large number of cabin-piercing structures makes it easy to become a vibration transmission path mechanism between the inner and outer shells, increasing the difficulty of vibration control between the inner and outer shells and reducing the accuracy of the experiment. Summary of the Invention

[0003] The purpose of the present invention is to provide a cabin-piercing structure of a water-related experimental cabin that has good water sealing performance during the experiment, and at the same time can be used to isolate vibrations inside and outside the shell and reduce the influence on the vibration transmission characteristics of the shell itself.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions.

[0005] A cabin-piercing structure of a water-related experimental cabin includes an L-shaped lead-out pipe 10 arranged on the outer wall of an outer shell 9a, a cabin-piercing assembly 3 arranged on an inner shell 9b, and a data cable 4;

[0006] An outlet hole 1a is provided on the outer shell 9a, and the outlet hole 1a is below the water line of the outer shell; a wire-passing hole 2a is provided on the inner shell 9b and is opposite to the outlet hole 1a, and the wire-passing hole 2a is below the water line of the inner shell;

[0007] The horizontal part of the L-shaped lead-out pipe 10 is inserted into the outlet hole 1a and is connected to the hole wall in a water-tight manner. The vertical arm part of the L-shaped lead-out pipe 10 extends vertically upward, and the height of the top of the vertical arm of the L-shaped lead-out pipe 10 from the ground is not lower than the height of the water line of the outer shell from the ground;

[0008] The cabin-piercing assembly 3 includes: an externally threaded connecting cylinder 30, an internally threaded locking sleeve 31, a sealing rubber plug 32, and a rubber protection part 33;

[0009] The external thread connecting cylinder 30 includes a sleeve portion inserted into the wire passing hole 2a and an external thread connecting portion located on the inner and outer sides of the inner shell 9b; a wire passing channel 1a is dug out in the center of the sleeve portion, and an installation groove 30b communicating with the wire passing channel 1a is provided on the external thread connecting portion; two sealing rubber plugs 32 are respectively inserted into the installation grooves 30b on both sides of the external thread connecting cylinder 30 and are connected in a water-tight manner. On the outer wall of the sealing rubber plug 32 located outside the installation groove 30b, there are successively provided an annular pressure-bearing portion 32a, a snap ring groove 32b, and an annular anti-disengagement groove 32c;

[0010] The internal thread of the internal thread locking sleeve 31 matches the external thread on the external thread connecting portion. One end of the internal thread locking sleeve 31 is provided with an annular extrusion portion 31a; two internal thread locking sleeves 31 are respectively sleeved on the external thread connecting portion, and the annular extrusion portion 31a abuts against the annular pressure-bearing portion 32a to further press the sealing rubber plug 32;

[0011] The data cable 4 enters and passes through the outer shell 9a from the L-shaped lead-out pipe 10, then passes through the sealing rubber plug 32 and enters the inner shell 9b through the external thread connecting cylinder 30, and finally passes out of the other sealing rubber plug 32 and enters the inside of the inner shell 9b;

[0012] The rubber protection member 33 is formed by molding using a mold after the above-mentioned structure is assembled. The rubber protection member 33 includes a water-sealing portion 33a covering the exposed part of the sealing rubber plug 32 and an extension section 33b wrapping the end of the data cable 4 close to the rubber protection member 33.

[0013] For a further improvement or preferred implementation of the above-mentioned water-crossing test chamber penetration structure, a part of the inner structure of the water-sealing portion 33a extends into the annular anti-disengagement groove 32c to form an annular anti-disengagement structure.

[0014] For a further improvement or preferred implementation of the above-mentioned water-crossing test chamber penetration structure, a high-frequency buffer structure is provided in the wire passing channel 1a; the high-frequency buffer structure is composed of a plurality of metal isolation sheets 5a distributed along the axis direction of the sleeve portion, hollow glass microspheres arranged between the metal isolation sheets 5a, and viscoelastic resin filled between the metal isolation sheets 5a and the hollow glass microspheres.

[0015] For a further improvement or preferred implementation of the above-mentioned water-crossing test chamber penetration structure, thread connection holes are uniformly provided on the outer side of the end of the wire passing hole 2a facing the outer shell 9a, and the external thread connecting cylinder 30 is provided with a flange connecting portion 30e at the corresponding end; the flange connecting portion 30e is connected to the thread connection holes through a bolt group.

[0016] For a further improvement or preferred implementation of the above-mentioned water-crossing test chamber penetration structure, a water-sealing groove is provided on the rated end surface of the side of the flange connecting portion 30e facing the inner shell 9b, and a rubber ring is provided in the water-sealing groove.

[0017] For a further improvement or preferred implementation of the above-mentioned through-hull structure of the water-related test chamber, the water seal connection at least includes a sealing rubber ring provided on the corresponding contact surface.

[0018] The present application also provides a double-ended through-hull structure for a water-related test chamber, which is installed on the shell walls 9 at both ends of the water-related test chamber, and is characterized in that it includes two through-hull components 3 and a support connection component 2 for connecting the through-hull components 3;

[0019] The support connection component 2 includes a telescopic sleeve 20, a spring 21, and a connecting piece 22;

[0020] The telescopic sleeve 20 is composed of a coaxial socket sleeve 201 and a telescopic rod 202. The socket sleeve 201 and the telescopic rod 202 are respectively connected to the rubber protection parts 33 on the two through-hull components and are horizontally arranged; the spring 21 is sleeved outside the telescopic sleeve 20, and both ends of the spring 21 are respectively connected to the rubber protection parts 33 on the two through-hull components;

[0021] The connecting piece 22 is provided with a spring connection hole and a C-shaped clamping hole, and a plurality of connecting pieces 22 are uniformly sleeved on the spring 21 through the spring connection holes.

[0022] For a further improvement or preferred implementation of the above-mentioned double-ended through-hull structure of the water-related test chamber, a docking hole 11a for connecting with the telescopic sleeve 20 is provided at the free end of the rubber protection part 33.

[0023] For a further improvement or preferred implementation of the above-mentioned double-ended through-hull structure of the water-related test chamber, the wire passing channel 1a extends downward from the free end of the rubber protection part 33 to form a wiring hole 1b.

[0024] The beneficial effects are as follows:

[0025] The through-hull structure of the water-related test chamber of the present application is used for the through-hull connection of sensors or data lines of various water-related test equipment below the water level line, which can ensure the stable and fixed connection and effective sealing of the through-hull structure. With the improvement scheme, it can effectively reduce the risk of leakage or loosening of the through-hull structure during vibration and shock tests. Among them, the double-ended through-hull structure of the water-related test chamber is applicable to various types of water-related test chambers, especially for the installation and connection of through-hull structures and sensors in the area below the water line of the test chamber. This through-hull structure is convenient to install and use, and the overall structure is simple. The two through-hull components are used in cooperation with the support connection component to support and connect multiple sensors or monitoring devices. At the same time, the self-recovery ability of the spring is used to maintain the relative stability of the original detection position, and suppress the data error caused by the change of the sensor position during the transmission of shock waves. Description of the Drawings

[0026] Figure 1 It is the front view of the through-hull structure of the water-related test chamber;

[0027] Figure 2 It is a side sectional view of the through-hull structure of the wading test chamber;

[0028] Figure 3 It is a top sectional view of the through-hull structure of the wading test chamber.

[0029] Figure 4 It is the front view (partial section) of the double-ended through-hull structure of the wading test chamber;

[0030] Figure 5 It is the front perspective sectional view of the other end of the double-ended through-hull structure of the wading test chamber;

[0031] Figure 6 It is Figure 5 The enlarged schematic diagram of area C in Specific implementation manners

[0032] The following elaborates on the present invention in detail in conjunction with specific embodiments.

[0033] The through-hull structure of the wading test chamber of the present application is mainly installed in a double-hull test chamber and is used as a watertight through-hull structure for various sensors and data transmission lines, replacing the existing tubular or rubber-ring through-hull structures, to improve the water sealing performance in a vibration medium or a high-pressure medium, and at the same time improve the impact resistance of the data line or the detection line, preventing phenomena such as end bending.

[0034] As Figure 1 shown, the main structure of the through-hull structure of the wading test chamber includes an L-shaped lead-out pipe 10 provided on the outer wall of the outer shell 9a, a through-hull assembly 3 provided on the inner shell 9b, and a data cable 4;

[0035] Among them, the L-shaped lead-out cylinder 10 is used to bundle the external data transmission cable structure of through-hull parts such as sensors, so as to facilitate connection and fixation, reduce the number of holes dug in the outer shell 9a. The L-shaped lead-out cylinder has a simple structure and can avoid the outflow of the experimental medium inside the outer shell 9a. It can be directly welded and made with existing elbow products. The L-shaped lead-out cylinder can also serve as the outer shell medium injection structure to achieve multiple functions with one object. The through-hull assembly is used for the connection and fixation of data cables or pipelines of various common experimental equipment or components.

[0036] To facilitate the installation of the L-shaped lead-out pipe 10, a lead-out hole 1a is provided on the outer shell 9a. The lead-out hole 1a is located below the wading line of the outer shell to ensure that the through-hull structure body is inside the medium, avoid the body passing through the medium-air interface, and ensure the relative stability of the external environment of the through-hull structure; a wire-passing hole 2a is provided on the inner shell 9b opposite to the lead-out hole 1a. The wire-passing hole 2a is located below the wading line of the inner shell so that the data cable 4 can directly enter the medium layer after passing through, avoiding passing through the medium interface.

[0037] To prevent the leakage of the medium inside the outer shell 9a, the horizontal part of the L-shaped lead-out pipe 10 is inserted into the lead-out hole 1a and is connected to the hole wall in a water-tight manner. In actual implementation, it is generally fixedly connected by welding or other means, which reduces the difficulty of the water-tight work while ensuring the connection strength.

[0038] The vertical arm part of the L-shaped lead-out pipe 10 extends vertically upward, and the height of the top of the vertical arm of the L-shaped lead-out pipe 10 from the ground is not lower than the height of the water-wading line of the outer shell from the ground to avoid the leakage of the medium;

[0039] Such as Figure 2 、 Figure 3 As shown, the through-hull assembly 3 includes: an external-thread connecting cylinder 30, an internal-thread locking sleeve 31, a sealing rubber plug 32, and a rubber protective part 33;

[0040] The external-thread connecting cylinder 30 includes a sleeve part inserted into the wire-passing hole 2a and an external-thread connecting part located on the inner and outer sides of the inner shell 9b; a wire-passing channel 1a is dug out in the center of the sleeve part, and an installation groove 30b communicating with the wire-passing channel 1a is provided on the external-thread connecting part; two sealing rubber plugs 32 are respectively inserted into the installation grooves 30b on both sides of the external-thread connecting cylinder 30 and are connected in a water-tight manner. An annular pressure-bearing part 32a, a snap ring groove 32b, and an annular anti-disengagement groove 32c are sequentially arranged on the outer wall of the sealing rubber plug 32 located outside the installation groove 30b;

[0041] Among them, the external-thread connecting cylinder 30 is a basic connection and fixation structure, which is directly inserted into the installation hole 9a dug on the shell wall 9 at both ends of the water-wading test chamber; the external-thread connecting cylinder 30 is connected to the hole wall of the installation hole 9a in a water-tight manner. In actual implementation, according to the different characteristics of the material and thickness of the test chamber shell wall, the structural cooperation and water-tight structure between the external-thread connecting cylinder 30 and the installation hole 9a can adopt common connection structures such as threaded fit connection, interference fit connection, and glue-sealed installation according to needs.

[0042] The internal thread of the internal-thread locking sleeve 31 matches the external thread on the external-thread connecting part, and an annular extrusion part 31a is provided at one end of the internal-thread locking sleeve 31; two internal-thread locking sleeves 31 are respectively sleeved on the external-thread connecting part, and the annular extrusion part 31a abuts against the annular pressure-bearing part 32a to press the sealing rubber plug 32 tightly;

[0043] The data cable 4 enters from the L-shaped lead-out pipe 10 and passes through the outer shell 9a, then passes through the sealing rubber plug 32 and enters the inner shell 9b through the external-thread connecting cylinder 30, and finally passes out from the sealing rubber plug 32 on the other side and enters the inside of the inner shell 9b;

[0044] The rubber protective part 33 is formed by using a mold after the above-mentioned structure is assembled. The rubber protective part 33 includes a water-tight part 33a covering the exposed part of the sealing rubber plug 32 and an extension section 33b wrapping the end of the data cable 4 close to the rubber protective part 33;

[0045] In the foregoing structure, the externally threaded connecting cylinder 30 serves as a through-hull support structure, forming the main passage for the data cable to enter and exit the inner shell 9b. The sealant plug is used to block the openings at both ends of the externally threaded connecting cylinder, and the internally threaded locking sleeve presses the sealant plug. At the same time, it cooperates with the sealant plug to position the data cable, and the rubber protection part is used to form a good water-tight closed layer and protect the leading end of the data cable.

[0046] In order to improve the connection strength of the rubber protection part and at the same time improve the end water-sealing effect, in this embodiment, a part of the structure inside the water-sealing part 33a extends into the annular anti-disengagement groove 32c to form an annular anti-disengagement structure. Through the flow characteristics during rubber molding, a tight connection can be formed between the rubber protection part and the sealant plug, and after cooling, the rubber shrinks and tightens to achieve an effective sealed connection. Utilizing the elasticity of the extended rubber part, it constitutes a buffer protection for the end of the data cable, avoiding problems such as deformation at the connection between the data cable and the through-hull structure caused by medium impact, and improving the structural strength.

[0047] Particularly, considering that during the actual test process, the media inside and outside the inner and outer shells will vibrate at high frequency under the drive of the vibration excitation device. Since the through-hull structure body is located at the weak part of the shell hole and extends into the inside and outside of the shell, the vibration caused by the media will cause the vibration of the through-hull structure itself and the internal structure and lead to the direct transmission of the vibration by the through-hull structure, causing the vibration of the media on both sides of the inner shell 9b to interact, affecting the effectiveness of the actual machine test results. In this embodiment, a high-frequency buffer structure is provided in the wire passing channel 1a; the high-frequency buffer structure is composed of a plurality of metal isolation sheets 5a distributed along the axis direction of the sleeve part, hollow glass microspheres arranged between the metal isolation sheets 5a, and viscoelastic resin filled between the metal isolation sheets 5a and the hollow glass microspheres. The combined structure of the polymer viscoelastic resin and the hollow glass microspheres can convert the vibration wave energy into heat energy of the material and dissipate it after interacting with the vibration wave, thereby reducing the transmission of the vibration wave. The metal isolation sheets form a cross-section with multiple changes in density and modulus inside the through-hull structure channel, increasing the difficulty of vibration wave transmission and reducing the penetration rate of the vibration wave.

[0048] During the actual use process, the externally threaded connecting cylinder 30 can be installed by means of fixed or movable connections such as hinging. For the convenience of installation and maintenance and at the same time to enhance the connection strength, the following solution is adopted in this embodiment: Threaded connection holes are uniformly arranged on the outer side of the wire passing hole 2a towards one end of the outer shell 9a, and the externally threaded connecting cylinder 30 is provided with a flange connection part 30e at the corresponding end; the flange connection part 30e is connected to the threaded connection holes through a bolt group.

[0049] Wherein, a water sealing groove is provided on the rated end surface of the flange connection part 30e facing the inner shell 9b, and a rubber ring is arranged in the water sealing groove. The non-compressible rubber ring is used to fill the gap space through extrusion deformation after assembly, further realizing water sealing.

[0050] The double-end through-hull structure of the wading test cabin of the present invention is installed on the shell walls 9 at both ends of the wading test cabin, generally below the wading line of the test cabin, to ensure that the through-hull structure, namely data cables, etc., directly enters the water and will not pass through the medium interface to cause problems such as vibration waves. The main components include two through-hull components 3 and a support connection component 2 for connecting the through-hull components 3; wherein the through-hull component 3 is used for support and fixation, forming a stable connection structure on the shell wall 9 of the test cabin, and at the same time ensuring the water sealing performance of the cabin structure. The support connection component 2 is used to form a support structure for the installation of sensors in the test cabin, so as to facilitate maintaining the relative position relationship of each sensor and simplifying the work content of using the equipment test cabin and arranging the sensors.

[0051] The support connection component 2 includes a telescopic sleeve 20, a spring 21, and a connecting piece 22;

[0052] The telescopic sleeve 20 is composed of a coaxial socket sleeve 201 and a telescopic rod 202. The socket sleeve 201 and the telescopic rod 202 are respectively connected to the rubber protection parts 33 on the two through-hull components and are horizontally arranged; the spring 21 is sleeved outside the telescopic sleeve 20, and both ends of the spring 21 are respectively connected to the rubber protection parts 33 on the two through-hull components; for the convenience of connection and assembly, a docking hole 11a for connecting with the telescopic sleeve 20 is provided at the free end of the rubber protection part 33.

[0053] The connecting piece 22 is provided with a spring connection hole and a C-shaped clamping hole 22b. A plurality of connecting pieces 22 are evenly sleeved on the spring 21 through the spring connection holes to prevent it from detaching. During use, its position can be conveniently adjusted by rotation. The C-shaped clamping hole 22b can conveniently clamp various sensors or data cables. When the sensors or data cables move under the impact of shock waves, the elastic force of the spring can make it quickly return to its position, ensuring the relative stability of its horizontal position, enabling it to have self-adaptive shock resistance, without the need to additionally set up a support adjustment structure and being able to avoid strong impact damage to the sensors or equipment. Based on the foregoing structure, for the convenience of collecting and concentrating the sensor data cables, the wire passing channel 1a extends downward from the free end of the rubber protection part 33 to form a wiring hole 1b.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A double - shell through - cabin structure for a wading experiment chamber, characterized in that, it includes an L - shaped outlet pipe (10) arranged on the outer wall of the outer shell (9a), a through - cabin assembly (3) arranged on the inner shell (9b), and a data cable (4); An outlet hole (1a) is provided on the outer shell (9a), and the outlet hole (1a) is below the wading line of the outer shell; a wire - passing hole (2a) is provided on the inner shell (9b) opposite to the outlet hole (1a), and the wire - passing hole (2a) is below the wading line of the inner shell; The horizontal part of the L - shaped outlet pipe (10) is inserted into the outlet hole (1a) and is connected to the hole wall in a water - tight manner. The vertical arm part of the L - shaped outlet pipe (10) extends vertically upward, and the height of the top of the vertical arm of the L - shaped outlet pipe (10) from the ground is not lower than the height of the wading line of the outer shell from the ground; The through - cabin assembly (3) includes: an externally - threaded connecting cylinder (30), an internally - threaded locking sleeve (31), a sealing rubber plug (32), and a rubber protection part (33); The externally - threaded connecting cylinder (30) includes a sleeve part inserted into the wire - passing hole (2a) and externally - threaded connecting parts on the inner and outer sides of the inner shell (9b); a wire - passing channel (1a) is dug out in the center of the sleeve part, and an installation groove (30b) communicating with the wire - passing channel (1a) is provided on the externally - threaded connecting part; two sealing rubber plugs (32) are respectively inserted into the installation grooves (30b) on both sides of the externally - threaded connecting cylinder (30) and are connected in a water - tight manner. On the outer wall of the sealing rubber plug (32) located outside the installation groove (30b), a ring - shaped pressure - bearing part (32a), a snap - ring groove (32b), and a ring - shaped anti - detachment groove (32c) are sequentially arranged; The internal thread of the internally - threaded locking sleeve (31) matches the external thread on the externally - threaded connecting part. One end of the internally - threaded locking sleeve (31) is provided with a ring - shaped extrusion part (31a); two internally - threaded locking sleeves (31) are respectively sleeved on the externally - threaded connecting part, and the ring - shaped extrusion part (31a) abuts against the ring - shaped pressure - bearing part (32a) to press the sealing rubber plug (32) tightly; The data cable (4) enters through the L - shaped outlet pipe (10) and passes through the outer shell (9a), then passes through the sealing rubber plug (32) and enters the inner shell (9b) through the externally - threaded connecting cylinder (30), and finally passes out of the inner shell (9b) through the sealing rubber plug (32) on the other side and enters the interior of the inner shell (9b); The rubber protection part (33) is formed by molding with a mold after the above - mentioned structure is assembled. The rubber protection part (33) includes a water - tight part (33a) covering the exposed part of the sealing rubber plug (32) and an extension section (33b) wrapping the end of the data cable (4) close to the rubber protection part (33).

2. The double - shell through - cabin structure for a wading experiment chamber according to claim 1, characterized in that, The inner - side part of the water - tight part (33a) extends into the ring - shaped anti - detachment groove (32c) to form a ring - shaped anti - detachment structure.

3. The double - shell through - cabin structure for a wading experiment chamber according to claim 1, characterized in that, A high-frequency buffer structure is provided inside the wire passing channel (1a); the high-frequency buffer structure is composed of a plurality of metal isolation sheets (5a) distributed along the axis direction of the sleeve part, hollow glass microspheres arranged between the metal isolation sheets (5a), and viscoelastic resin filled between the metal isolation sheets (5a) and the hollow glass microspheres).

4. The double-shell wire-passing structure of the wading test chamber according to claim 1, characterized in that, Threaded connection holes are evenly arranged on the outer side of the end of the wire passing hole (2a) facing the outer shell (9a), and a flange connection part (30e) is arranged at the corresponding end of the external threaded connection cylinder (30); the flange connection part (30e) is connected to the threaded connection hole through a bolt group.

5. The double-shell wire-passing structure of the wading test chamber according to claim 4, characterized in that, A water seal groove is arranged on the rated end surface on the side of the flange connection part (30e) facing the inner shell (9b), and a rubber ring is arranged in the water seal groove.

6. The double-shell wire-passing structure of the wading test chamber according to claim 1, characterized in that, The water seal connection at least includes a seal rubber ring arranged on the corresponding contact surface.

7. The double-shell wire-passing structure of the wading test chamber according to claim 1, characterized in that, It includes two wire-passing components (3) and a support connection component (2) for connecting the wire-passing components (3); The support connection component (2) includes a telescopic sleeve (20), a spring (21), and a connecting piece (22); The telescopic sleeve (20) is composed of a coaxially sleeved sleeve (201) and a telescopic rod (202). The sleeve (201) and the telescopic rod (202) are respectively connected to the rubber protection parts (33) on two wire-passing components and are horizontally arranged; the spring (21) is sleeved outside the telescopic sleeve (20), and both ends of the spring (21) are respectively connected to the rubber protection parts (33) on two wire-passing components; Spring connection holes and C-shaped clamping holes are arranged on the connecting piece (22), and a plurality of connecting pieces (22) are evenly sleeved on the spring (21) through the spring connection holes.

8. The double-shell wire-passing structure of the wading test chamber according to claim 7, characterized in that, A docking hole (11a) for connecting with the telescopic sleeve (20) is arranged at the free end of the rubber protection part (33).

9. The double-shell wire-passing structure of the wading test chamber according to claim 1, characterized in that, The wire passing channel (1a) extends downward from the free end of the rubber protection part (33) to form a wiring hole (1b).

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