Water entry detection device

Abstract

The utility model discloses a water entry detection device which comprises an insulating shell and two metal probes arranged in the insulating shell, the metal probes are connected with a water entry detection circuit, the number of the metal probes is two, the distance between the two probes is larger than 18 mm, an arc-shaped groove is formed in the position, close to the water entry end of the metal probes, of the insulating shell, and the metal probes are located in the arc-shaped groove. According to the device, through the design of the arc-shaped groove at the end part of the insulating shell, water in the arc-shaped groove flows out along the arc-shaped groove under the guiding action of the arc-shaped groove when the underwater navigation body leaves water, so that the two metal probes are exposed in the air and are in a disconnected state, the fact that the water entry detection device can be accurately disconnected after leaving water is ensured, and the reliability of water entry detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water entry detection, in particular to a water entry detection device. Background Art

[0002] When the vehicle is launched or dropped, it is necessary to detect whether the vehicle has successfully entered the water. When the vehicle enters the water, the positive and negative copper columns of the water entry detection device are short-circuited by contact with seawater, thereby triggering the water entry detection circuit and realizing the soft start of the vehicle.

[0003] like Figure 1 As shown in the figure, the water ingress detection device currently used is designed to improve reliability by having four copper pillars with a relatively close distance, two of which are connected to the positive electrode of the water ingress detection circuit, and the other two are connected to the negative electrode of the water ingress detection circuit, with a flat end surface. This means that after the navigation body leaves the water, due to the close distance between the four copper pillars, the water tension may cause some water to continue to adhere between the copper pillars, and the water ingress detection circuit will be triggered by mistake, which may cause the navigation body to be destroyed in severe cases. In addition, long-term water adhesion makes the copper pillars susceptible to corrosion.

[0004] Based on this, a water entry detection device is needed that can be accurately disconnected after leaving the water. Utility Model Content

[0005] In view of the above problems, the utility model provides a water entry detection device with a simple structure and reliable design, which can effectively solve the problem of false triggering caused by water tension while ensuring the water entry detection function of the navigation body.

[0006] Specifically, the utility model provides a water ingress detection device, including an insulating shell and a metal probe arranged in the insulating shell, the metal probe is connected to the water ingress detection circuit, two metal probes are provided, and the distance between the two metal probes is greater than 18 mm, the insulating shell is provided with an arc groove near the water entry end of the metal probe, and the metal probe is located in the arc groove.

[0007] Furthermore, at least one sealing groove is provided on the connecting section between the metal probe and the insulating shell, and a sealing ring is provided in the sealing groove.

[0008] Furthermore, an insulating cover is provided at one end of the insulating shell away from the water-entering end of the metal probe.

[0009] Furthermore, the metal probe passes through the insulating shell and then extends into the insulating cover, and one end extending into the insulating cover is provided with a thread, and the nut fixes the metal probe in the insulating shell through the thread.

[0010] Furthermore, a mounting groove is provided on the connecting section between the metal probe and the insulating shell, and the mounting groove is located at one end close to the nut, and a mounting retaining ring is provided in the mounting groove.

[0011] Furthermore, the metal probe is made of gold-plated copper material, and the insulating shell is made of polyimide.

[0012] Compared with the prior art, the working principle and beneficial effects of the utility model are as follows:

[0013] (1) The water entry detection device provided by the utility model is designed with an arc groove at the end of the insulating shell, so that when the underwater vehicle leaves the water, the water in the arc groove is guided by the arc groove and flows out along the arc groove, so that the two metal probes are exposed to the air and are in a disconnected state, thereby ensuring that the water entry detection device can be accurately disconnected after leaving the water, thereby improving the reliability of water entry detection.

[0014] (2) The arc groove design can protect the metal probe to a certain extent, and at the same time reduce the adhesion and corrosion of seawater to the metal probe after leaving the water, thereby increasing the service life of the water ingress detection device.

[0015] (3) The rear end insulation cover can effectively prevent other cables from being connected to the metal probe, causing an accidental short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an existing water intrusion detection device;

[0017] Figure 2 is a schematic structural diagram of the water intrusion detection device in Example 1;

[0018] Figure 3 is a cross-sectional view of the water intrusion detection device in Example 1;

[0019] Figure 4 Schematic diagram of the internal structure of the water intrusion detection device in Example 1.

[0020] Reference numerals:

[0021] 1-insulating shell; 2-arc groove; 3-metal probe; 31-sealing groove; 32-installing groove; 33-nut; 34-spring washer; 35-flat washer; 4-insulating cover. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 2As shown, this embodiment provides a water entry detection device, including an insulating shell 1, a metal probe 3 and an insulating cover 4. The front end of the insulating shell 1 is an arc groove 2, and the insulating cover 4 is fixed to the rear end of the insulating shell 1. The metal probe 3 is provided with two, which penetrate the insulating shell 1, one end is located in the arc groove 2, and the other end is located in the insulating cover 4. The end located in the insulating cover 4 is connected to the underwater vehicle water entry detection circuit, and the distance between the two probes is greater than 18mm. When the vehicle enters the water, the two metal probes 3 are short-circuited by seawater to trigger the water entry detection circuit. When the underwater vehicle leaves the water, the water in the arc groove 2 is guided by the arc groove 2 and flows out along the arc groove 2, avoiding the water tension from causing the water to adhere to the front end surface of the insulating shell 1 and between the metal probes 3 to cause an erroneous short circuit, effectively solving the problem of false triggering caused by the water tension, thereby improving the reliability of water entry detection. At the same time, after the vehicle enters the water, the arc groove 2 can protect the metal probe 3 to a certain extent, avoiding the underwater object directly colliding with the metal probe 3 and causing damage to the metal probe 3.

[0025] The metal probe 3 is made of gold-plated copper material with low resistance, ensuring reliable short circuit and resistance to seawater corrosion; the insulating shell 1 and the insulating cover 4 are made of polyimide, ensuring insulation and structural strength.

[0026] A sealing groove 31 and a mounting groove 32 are provided on the connection section between the metal probe 3 and the insulating shell 1, and a sealing ring is installed in the sealing groove 31 for sealing. The rear end of the metal probe 3 (the end located in the insulating cover 4) is provided with a thread, and the nut 33 fixes the metal probe 3 in the insulating shell 1 through the thread. A spring washer 34 and a flat washer 35 are provided between the nut 33 and the rear end surface of the insulating shell 1, wherein the main function of the spring washer 34 is to prevent loosening, and the elastic force generated by compression and the edge of its notch are stuck to the connection surface to prevent the nut 33 from loosening. In addition, it can also give the nut 33 an elastic force to increase the friction between the nut 33 and the thread of the metal probe 3, so that the nut 33 is not easy to fall off. The main function of the flat washer 35 is to increase the contact area, provide a more evenly distributed pressure to protect the integrity of the connection surface and prevent the surface of the insulating shell 1 from being damaged by pressure. The mounting groove 32 is located at one end of the metal probe 3 close to the nut 33, and a mounting retaining ring is installed therein to prevent the nut 33 from being over-tightened and damaging the insulating shell 1.

[0027] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A water ingress detection device, comprising an insulating shell (1) and a metal probe (3) arranged in the insulating shell (1), wherein the metal probe (3) is connected to a water ingress detection circuit, characterized in that: Two metal probes (3) are provided, and the distance between the two metal probes (3) is greater than 18 mm. The insulating shell (1) is provided with an arc-shaped groove (2) near the water-entering end of the metal probe (3), and the metal probe (3) is located in the arc-shaped groove (2).

2. The water intrusion detection device according to claim 1, characterized in that: At least one sealing groove (31) is provided on the connection section between the metal probe (3) and the insulating shell (1), and a sealing ring is provided in the sealing groove (31).

3. The water intrusion detection device according to claim 1, characterized in that: An insulating cover (4) is provided at one end of the insulating shell (1) away from the water-entering end of the metal probe (3).

4. The water intrusion detection device according to claim 3, characterized in that: The metal probe (3) passes through the insulating shell (1) and then extends into the insulating cover (4), and one end extending into the insulating cover (4) is provided with a thread, and the nut (33) fixes the metal probe (3) in the insulating shell (1) via the thread.

5. The water intrusion detection device according to claim 4, characterized in that: A mounting groove (32) is provided on the connection section between the metal probe (3) and the insulating shell (1), and the mounting groove (32) is located at one end close to the nut (33), and a mounting retaining ring is provided in the mounting groove (32).

6. The water intrusion detection device according to claim 1, characterized in that: The metal probe (3) is made of gold-plated copper material, and the insulating shell (1) is made of polyimide.

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