A sealed connection device for underwater pressure measurement

Abstract

The invention discloses a sealing connection device for underwater pressure measurement, comprising a tension bolt, a front connector, a sealing cabin, a pressure transmitter, a rear connector, and a locking connector. The tension bolt is connected to the tension rope through a tension rope threading hole, and a toothed groove is processed on the side of the front connector to play a role of sealing and fixing when connected with a PU tube. The interior of the sealing cabin is processed into a transparent cavity, and the cavity wall is processed with a local sealing cabin internal thread for use with the rear connector. A through rear connector pressure-taking hole is processed on the rear connector, and the through hole is connected to the internal cavity of the rear connector. Through the rear connector pressure-taking hole, the pressure transmitter can take pressure in the water and measure the pressure in the water. The other end face of the locking connector is processed with a limit card groove higher than the internal cavity, which is used in conjunction with the limit boss of the rear connector to prevent the sealing cabin from being forced to fall off the front connector. The side of the pressure transmitter has an external thread of the pressure transmitter, which can be tightened with the internal thread of the rear connector on the inner wall of the rear connector cavity, so that the pressure-taking point at the tip of the pressure transmitter is placed in the pressure-taking hole of the rear connector. When the device is immersed in water, the water pressure increases with the increase of water depth, and the pressure signal generated by the pressure transmitter is exported to the supporting monitoring and recording equipment through the wire. This sealed connection device for underwater pressure measurement solves the problem of pressure measurement of linear arrays immersed in water at different depths.

Description

Technical Field

[0001] The invention relates to a sealing connection device for underwater pressure measurement, which is mainly used in the field of linear array underwater measurement. Background Art

[0002] Linear arrays are important products for underwater acoustic detection and are core equipment for many underwater scientific research experiments. They are widely used in the fields of ocean exploration, marine military, marine protection, shore-based protection, etc. With the development of marine science and technology, they are also increasingly used in the field of deep-sea exploration. Underwater pressure is an important parameter for linear array underwater acoustic detection. Therefore, the method and equipment for taking the pressure of the linear array in water are very important. The sealed connection device for underwater pressure measurement disclosed in the present invention solves the problem of measuring the pressure of the linear array at different depths when immersed in water. Summary of the invention

[0003] Aiming at the problem of measuring pressure at different depths when a linear array is immersed in water, the present invention provides a sealing connection device for underwater pressure measurement.

[0004] Technical solution: A sealing connection device for underwater pressure measurement includes a tension bolt, a front connector, a sealing cabin, a pressure transmitter, a rear connector, and a locking connector.

[0005] The tension bolt is connected to the tension rope through the tension rope threading hole, and the other end of the tension bolt is connected to the front end connector through a thread.

[0006] A toothed groove is machined on the side of the front connector, which plays a role in sealing and fixing when connected to the PU tube; an internal cavity is opened in the middle of the end face, and the cavity wall is machined with internal threads, which are connected with the tensioning bolts; in order to prevent the threaded connection from rotating against each other, a top screw hole is opened on the side and fixed with a top screw; an external thread is machined on the other side of the front connector at the same time, which is assembled with the sealing cabin; a cavity is machined on the other end face to store the pressure transmitter; a fixing groove is also opened on the end face to cooperate with the fixing boss of the sealing cabin to prevent the sealing cabin from rotating.

[0007] An oil filling hole is processed above the boss of the front-end connector, and an oil filling channel connected to the oil filling hole is processed inside the front-end connector. Silicone oil is injected through the oil filling hole, and then injected into the PU tube of the linear array through the oil filling channel to form a pressure-resistant entity inside the array. After the oil filling is completed, an oil plugging wire is screwed into the oil filling hole for sealing; a wire outlet hole is also processed inside the front-end connector to lead out the wires of the pressure transmitter.

[0008] Two sealing ring grooves are processed on the side of the sealed cabin for placing the sealing ring; a fixed boss is also processed on the side to cooperate with the fixed groove processed on the front-end connector to prevent relative rotation between the front-end connector and the sealed cabin after connection; the interior of the sealed cabin is processed into a transparent cavity, and a partial internal thread is processed on the cavity wall for use with the rear-end connector.

[0009] The side of the rear-end connector is processed with an external thread, which is connected to the internal thread of the internal cavity of the sealed cabin to form an integral component; a counterweight mounting hole is opened on the rear-end connector for mounting the counterweight.

[0010] A cavity for placing the pressure transmitter is opened in the middle of the end face of the rear-end connector, and the inner wall of the cavity is processed with an internal thread for cooperating with the external thread of the pressure transmitter. The pressure transmitter is fixed in the internal cavity of the rear-end connector through a threaded connection; a through rear-end connector pressure-taking hole is processed on the rear-end connector, and the through-hole is connected to the internal cavity of the rear-end connector. Through the rear-end connector pressure-taking hole, the pressure transmitter can take pressure in water and measure the pressure in water.

[0011] The interior of the locking connector is processed into a transparent cavity, and the front part of the cavity is processed with an internal thread for matching and connecting with the rear external thread of the front connector, so as to connect the front connector and the locking connector; the other end face of the locking connector is processed with a limit slot higher than the internal cavity, which is used in conjunction with the limit boss of the rear end connector to prevent the sealed cabin from falling off the front end connector under force.

[0012] The locking connector has three evenly spaced top screw holes on the two sides near the end faces, which are used in conjunction with the top screws to prevent the locking connector from loosening. The pressure transmitter has external threads on the side, which can be tightened with the internal threads on the inner wall of the rear connector cavity, so that the pressure point in the pressure tapping hole of the pressure transmitter is placed in the pressure tapping hole of the rear connector. When the device is immersed in water, the water pressure increases with the increase in depth, and the different pressures are converted into corresponding electrical signals through the pressure transmitter, and the electrical signals are exported to the matching monitoring and recording equipment through wires.

[0013] Beneficial effects: The underwater pressure is an important parameter of the linear array hydroacoustic detection, so the method and equipment for measuring the pressure of the linear array in the water are very important. The sealing connection device for underwater pressure measurement disclosed by the present invention solves the problem of measuring the pressure of the linear array at different depths when immersed in water. This sealing connection device for underwater pressure measurement plays an important role in the wide application of the linear array in the fields of ocean detection, marine military, marine protection, shore-based protection, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Overall schematic diagram of the sealed connection device for underwater pressure measurement

[0015] Figure 2Explosion diagram of a sealed connection device for underwater pressure measurement

[0016] Figure 3 Tightening bolt diagram

[0017] Figure 4 Tension bolt cross section

[0018] Figure 5 Front-end connector diagram

[0019] Figure 6 Front connector cross section

[0020] Figure 7 Sealed cabin diagram

[0021] Figure 8 Sealed cabin section

[0022] Fig. 9 Pressure transmitter schematic diagram

[0023] Fig.10 Pressure transmitter cross section

[0024] Fig.11 Back-end connector diagram

[0025] Fig.12 Rear connector cross section

[0026] Fig.13 Locking connector diagram

[0027] Fig.14 Locking Connector Sectional View

[0028] In the figure, there are tensioning bolt 1, tension rope threading hole 11, front end connector 2, wire appearance hole 21, front end connector top screw hole 22, front end connector internal thread 23, oil filling channel 24, toothed groove 25, oil filling hole 26, fixing groove 27, front end connector external thread 28, oil blocking wire 201, top screw 202, sealing cabin 3, fixing boss 31, sealing ring groove 32, sealing cabin internal thread 33, sealing ring 301, pressure transmitter 4, wire 41, pressure transmitter external thread 42, pressure transmitter pressure taking hole 43, rear end connector 5, rear end connector internal thread 51, rear end connector external thread 52, rear end connector top screw hole 53, limiting boss 54, rear end connector pressure taking hole 55, counterweight mounting hole 56, locking connector 6, locking connector internal thread 61, locking connector top screw hole 62, limiting slot 63. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The present invention discloses a sealing connection device for underwater pressure measurement, comprising a tension bolt 1, a front connector 2, a sealing cabin 3, a pressure transmitter 4, a rear connector 5, and a locking connector 6. The tension bolt 1 is connected to the tension rope through the tension rope threading hole 11, and the side of the front connector 2 is processed with a toothed groove 25, which plays a role of sealing and fixing when connected with the PU tube. The interior of the sealing cabin 3 is processed into a transparent cavity, and the cavity wall is processed with a local sealing cabin internal thread 33 for use with the rear connector 5. A through rear connector pressure taking hole 55 is processed on the rear connector 5, and this through hole is connected to the internal cavity of the rear connector 5. Through this rear connector pressure taking hole 55, the pressure transmitter 4 can take pressure in the water and measure the pressure in the water. The other end face of the locking connector 5 is processed with a limit card groove 63 higher than the internal cavity, which is used in conjunction with the limit boss 54 of the rear connector 5 to prevent the sealing cabin 3 from being forced to fall off the front connector 2. The side of the pressure transmitter 4 has an external thread 42 of the pressure transmitter, which can be tightened with the internal thread 51 of the rear connector on the inner wall of the cavity of the rear connector 5, so that the pressure point at the tip of the pressure transmitter 4 is placed in the pressure hole 55 of the rear connector. When the device is immersed in water, the water pressure increases with the increase of water depth, and the pressure signal generated by the pressure transmitter 4 is exported to the matching monitoring and recording equipment through the wire 41.

[0031] The specific embodiments are as follows:

[0032] Design and processing of tension bolt 1

[0033] The total length of the tension bolt 1 is 70 mm, the diameter There are two processing The threading holes and their centers are 13mm and 24mm away from the end faces respectively. The tail of the bolt is processed with M14x1.5mm external thread, and the thread length is 39mm.

[0034] Design and processing of front connector 2

[0035] The total length of the front connector 2 is 91.3 mm and the diameter is A 45mm deep cavity is machined in the middle of the front end face, and the cavity is expanded with an M14 front end connector internal thread 23; the diameter is machined on the lower side of the front end face The wire outlet hole 21 has a hole depth of 65 mm; the upper side of the front end surface is processed with an oil injection channel 24, and the diameter of the oil injection channel 24 is The hole depth is 65mm; there is a hole on the front connector 2. The oil injection hole 26 is 5 mm deep and is connected to the oil injection channel 24 .

[0036] A continuous toothed groove 25 is machined on the side circumference, with a total length of 41.6 mm and a starting point 6.5 mm from the front end face; two corresponding M3 front end connector top screw holes 22 are machined on both sides of the front end face; a diameter of The cavity is 20 mm deep and has an M44x1.5 mm front connector external thread 28 processed on the outside.

[0037] Design and processing of sealed cabin 3

[0038] The diameter of the sealed cabin 3 is The total length is 67mm, and the front end of the sealed cabin 3 is machined with a diameter A cavity with a depth of 27mm; a cavity with a depth of 40mm is processed at the rear end, and expanded with M38x1.5mm internal threads, and the depth of the internal threads is also 40mm; two sealing ring grooves 32 with a width of 3.4mm and a depth of 2.04mm are processed 4mm away from the front end face of the sealing cabin 3, and the interval between the two sealing ring grooves 32 is 4mm; two independent fixing bosses 31 are processed at the upper and lower parts, and the two fixing bosses 31 are 2mm long, 2mm wide, 2mm high, and 17mm away from the front end face.

[0039] Design and processing of rear connector 5

[0040] Rear connector 5 processing diameter The total length is 67mm, the front end face is processed with a cavity and expanded with a 22mm deep M12 rear end connector internal thread 51; 10mm from the front end face, a 5mm wide The limiting boss 54 is machined 22mm from the front end surface. The pressure-taking hole 55 of the rear connector is connected to the internal thread 51 of the rear connector of M12 with a depth of 22m; a 30mm thick and 15mm stretching plane is machined downward on both sides based on the rear end surface, and a The counterweight mounting hole 56 has a center distance of 14 mm from the rear end face.

[0041] Design and processing of locking connector 6

[0042] Locking connector 6 diameter The total length is 77mm, the front end is processed with a cavity and expanded to a depth of 30mm, and the internal thread of the M45x1.5 locking connector is 61;

[0043] The back end is processed with diameter The cavity is 42 mm long, the rear limit slot 63 is 5 mm thick, and has an inner diameter of 3 M3 locking connector top screws 62 are evenly distributed on both sides 2.5mm away from the front and rear end surfaces.

[0044] Overall installation

[0045] 1. Connect the external thread 42 of the pressure transmitter and the internal thread 51 of the rear connector and tighten them.

[0046] 2. After the internal thread 33 of the sealing cabin is connected and tightened with the external thread 52 of the rear-end connector, 3M vulcanized rubber is injected through the front end cavity of the sealing cabin 3. After the vulcanized rubber solidifies, the sealing cabin 3, the pressure transmitter 4 and the rear-end connector 5 are vulcanized into a whole device.

[0047] 3. Install the two sealing rings 301 into the sealing ring grooves 32 of the sealing cabin 3, pass the wires 41 of the pressure transmitter 4 through the wire outlet holes 21 of the front connector 2, insert the end face of the sealing cabin 3 with the sealing ring 301 into the rear end cavity of the front connector 2, and align the fixing grooves 27 of the front connector 2 with the fixing bosses 31 of the sealing cabin 3 and insert them firmly.

[0048] 4. Pass the locking connector 6 through the rear-end connector 5 and the sealed cabin 3 from the opening, and the limiting groove 63 of the locking connector 6 contacts the limiting boss 54 of the rear-end connector 5 for limiting; tighten the locking connector internal thread 61 and the front-end connector external thread 28; screw the six top screws 202 into the locking connector top screw holes 62, and lock the locking connector 6 with the front-end connector 2 and the rear-end connector 5 respectively to prevent the devices from relative displacement and rotation.

[0049] 5. Connect the rear end external thread of the tension bolt 1 with the internal thread 23 of the front end connector, screw the two top screws 202 into the top screw holes 22 of the front end connector to lock them, so as to prevent the device from relative displacement and rotation.

Claims

1. A sealing connection device for underwater pressure measurement, characterized in that The sealing connection device for underwater pressure measurement includes a tension bolt, a front connector, a sealing cabin, a pressure transmitter, a rear connector, and a locking connector; The tension bolt is connected to the tension rope through the tension rope threading hole, and the other end is connected to the front connector through a thread. The side of the front connector is processed with a toothed groove, which plays a role of sealing and fixing when connected with the PU tube; an internal cavity is opened in the middle of the end face, and the cavity wall is processed with an internal thread, which is connected with the tension bolt; in order to prevent the threaded connection from rotating with each other, a top screw hole is opened on the side, and it is fixed with a top screw; an external thread is processed on the other side of the front connector at the same time, and it is assembled with the sealing cabin; a cavity is processed on the other end face to store the pressure transmitter; the end face is also opened with a fixing groove, which cooperates with the fixing boss of the sealing cabin to prevent the sealing cabin from rotating; An oil filling hole is processed above the boss of the front-end connector, and an oil filling channel is processed inside the front-end connector and connected to the oil filling hole. Silicone oil is injected through the oil filling hole, and the silicone oil is injected into the PU tube of the linear array through the oil filling channel, so that a pressure-resistant entity is formed inside the array body. After the oil filling is completed, the oil plugging wire is screwed into the oil filling hole for sealing; a wire outlet hole is also processed inside the front-end connector to lead out the wire of the pressure transmitter; The side of the sealed cabin is processed with two sealing ring grooves for placing the sealing ring; the side is also processed with a fixing boss for cooperating with the fixing groove processed on the front connector to prevent the front connector and the sealed cabin from relative rotation after being connected; The interior of the sealed cabin is processed into a transparent cavity, and the cavity wall is processed into a partial internal thread for use with the rear-end connector; The side of the rear-end connector is processed with an external thread, which is connected to the internal thread of the cavity inside the sealed cabin to form an integral component; the rear-end connector is provided with a counterweight mounting hole for mounting the counterweight; A cavity for placing the pressure transmitter is opened in the middle of the end face of the rear-end connector, and the inner wall of the cavity is processed with an internal thread for cooperating with the external thread of the pressure transmitter. The pressure transmitter is fixed in the internal cavity of the rear-end connector through a threaded connection; a through connector pressure-taking hole is processed on the rear-end connector, and the through hole is connected to the internal cavity of the rear-end connector. Through the connector pressure-taking hole, the pressure transmitter can take pressure in water and measure the pressure in water.

2. A sealing connection device for underwater pressure measurement according to claim 1, characterized in that The interior of the locking connector is processed into a transparent cavity, and the front part of the cavity is processed with an internal thread for matching and connecting with the rear external thread of the front-end connector, so as to connect the front-end connector and the locking connector; the other end face of the locking connector is processed with a limiting groove higher than the internal cavity, which is used in conjunction with the limiting boss of the rear-end connector to prevent the sealed cabin from falling off the front-end connector under force.

3. A sealing connection device for underwater pressure measurement according to claim 2, characterized in that The locking connector is provided with three evenly distributed top screw holes on two side circumferences close to the end faces, which are used in conjunction with the top screws to prevent the locking connector from loosening.

4. A sealing connection device for underwater pressure measurement according to claim 1, characterized in that The pressure transmitter has an external thread on the side, which can be tightened with the internal thread on the inner wall of the rear-end connector cavity, so that the pressure point in the pressure taking hole of the pressure transmitter is placed in the pressure taking hole of the connector; when the device is immersed in water, the water pressure increases with the increase of water depth, and the pressure signal generated by the pressure transmitter is exported to the matching monitoring and recording equipment through a wire.

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