Underwater temperature and pressure sensor

Abstract

The utility model discloses an underwater temperature and pressure sensor, which belongs to the technical field of underwater detection, and comprises a shell, an electronic bin is arranged in the shell, a circuit transmission component is wired in the electronic bin, a mounting hole is arranged at the first direction end of the shell, a probe component is inserted into the mounting hole, the mounting hole is communicated with the electronic bin, and the electronic bin is communicated with the probe component. After the probe assembly is inserted into the mounting hole, the probe assembly is in sealed connection with the mounting hole, the probe assembly is in communication connection with the fly wire assembly, a fly wire is fixedly connected to the second direction end of the shell, a communicating hole is formed in the second direction end of the shell and communicates with the electronic bin, and the circuit transmission assembly is in communication connection with the fly wire through the communicating hole. According to the utility model, the packaging and sealing technology of the all-welded integrated probe is adopted, and the sensitivity of the temperature and pressure sensor is effectively improved by symmetrically arranging at least two sets of redundant pressure detection probes and temperature detection probes under the condition that the size of the probe assembly is as small as possible and enabling the probes to be in close contact with a measured medium.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underwater detection technical field especially relates to an underwater temperature and pressure sensor. BACKGROUND

[0002] Temperature and pressure are basic data needed to be acquired in marine petroleum engineering. In order to acquire relevant data synchronously, temperature sensor and pressure sensor are usually arranged simultaneously at one underwater measuring position to measure on engineering. However, due to the sensor working in underwater high pressure and high salt seawater environment, the existing temperature and pressure measuring device has the following defects:

[0003] I. The prior art only sets one set of temperature and pressure detection probe, once the temperature detection probe or the pressure detection probe is damaged and fails, normal measurement work cannot be carried out, which seriously affects production.

[0004] II. The shell of the existing measuring device may fail under high pressure, causing the measured medium to flow into the measuring device, causing circuit component short circuit or medium leakage and environmental pollution.

[0005] Therefore, it is urgent to design an underwater temperature and pressure sensor to solve the above problems. INVENTION CONTENTS

[0006] The utility model discloses a kind of underwater temperature and pressure sensors, with the advantages of multiple sealing barriers and redundant detection probe, solve the problems mentioned in background art.

[0007] To achieve the above object, the specific technical scheme of a kind of underwater temperature and pressure sensor of the utility model is as follows:

[0008] An underwater temperature and pressure sensor, comprising a shell, an electronic compartment is formed in the shell, the electronic compartment is wired for circuit transmission components, a mounting hole is formed in the first direction end of the shell, a probe assembly is inserted into the mounting hole, the mounting hole is communicated with the electronic compartment, after the probe assembly is inserted into the mounting hole, the probe assembly is connected with the flying wire assembly, the second direction end of the shell is fixedly connected with flying wire, the second direction end of the shell is provided with a communication hole, the communication hole is communicated with the electronic compartment, and the circuit transmission component is connected with the flying wire through the communication hole.

[0009] Further, after the probe assembly is inserted into the mounting hole, the probe assembly is sealingly fixed with the mounting hole, and a first sealing ring is arranged at the connection between the probe assembly and the mounting hole.

[0010] Further, the probe assembly comprises a base, two pressure detection probes and two temperature detection probes are arranged in the base, the two pressure detection probes and the two temperature detection probes are symmetrically arranged, and the two pressure detection probes and the two temperature detection probes are connected with the circuit transmission component.

[0011] Further, the probe assembly comprises a connecting pipe, the base is sealingly fixed with the connecting pipe, a wiring hole is formed in the connecting pipe, the wiring hole is communicated with the electronic bin after the probe assembly is inserted into the mounting hole, a first electric connector is inserted into the wiring hole, a first direction end of the first electric connector is electrically connected with the pressure detection probe and the temperature detection probe through a lead wire, and a second direction end of the first electric connector is electrically connected with the circuit transmission assembly through a lead wire.

[0012] Further, a second sealing ring is arranged at the connection between the first electric connector and the wiring hole after the first electric connector is inserted into the wiring hole.

[0013] Further, a first limiting piece is arranged in the wiring hole, a thread is formed on a second direction end of the wiring hole, the wiring hole is screwed with a limiting sleeve through the thread, the first direction end of the first electric connector is abutted against the first limiting piece after the first electric connector is inserted into the wiring hole, and then the limiting sleeve is screwed into the wiring hole until the limiting sleeve is abutted against the second direction end of the first electric connector.

[0014] Further, a pressure detection hole is formed in the base, the pressure detection hole is communicated with the wiring hole, the pressure detection probe is arranged in the pressure detection hole, a sensing end of the pressure detection probe faces outward of the pressure detection hole, and an output end of the pressure detection probe faces into the wiring hole.

[0015] Further, a heat insulation sleeve is arranged in the electronic bin, the heat insulation sleeve is flush with the inner wall of the electronic bin, and the circuit transmission assembly is arranged in the heat insulation sleeve.

[0016] Further, a second electric connector is fixedly connected in the communication hole, a first direction end of the second electric connector is electrically connected with the circuit transmission assembly, a second direction end of the second electric connector is electrically connected with the flying wire, a third sealing ring is arranged at the connection between the second electric connector and the communication hole, a second limiting piece is arranged at an end of the communication hole away from the circuit transmission assembly, and the second limiting piece is abutted against the second electric connector.

[0017] Further, the circuit transmission assembly comprises a support, two PCB boards are arranged on the support, two limiting rings are formed at the two ends of the support, the two limiting rings are respectively abutted against the two end faces of the electronic bin, the limiting ring at the first direction end is arranged in the heat insulation sleeve, and a fourth sealing ring is arranged between the limiting ring at the first direction end and the side wall of the electronic bin, and the limiting ring at the second direction end is in interference fit with the second electric connector.

[0018] The utility model has the following advantages:

[0019] (1), adopt the packaging and sealing technology of all welding type integrated probe, in the smallest probe assembly size, through the symmetrical arrangement of at least two sets of redundant pressure detection probe and temperature detection probe, and make it closely contact with the measured medium, effectively improve the sensitivity of temperature and pressure sensor, save the installation space of sensor, expand the use range.

[0020] (2), adopt sealed welding, sealing ring and high-voltage electric joint forms multiple sealing barrier, reduce the risk of medium leakage, significantly improve the reliability of temperature and pressure sensor. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 For the structure of the temperature and pressure sensor of the utility model Figure One ;

[0022] Figure 2 For the structure of the temperature and pressure sensor of the utility model Figure Two ;

[0023] Figure 3 For the structure of the temperature and pressure sensor of the utility model Figure One ;

[0024] Figure 4 For the structure of the temperature and pressure sensor of the utility model Figure 3 Enlarged structural diagram of C place in the utility model;

[0025] Figure 5 For the structure of the temperature and pressure sensor of the utility model Figure Three ;

[0026] Figure 6 For the structure of the temperature and pressure sensor of the utility model Figure Two ;

[0027] Figure 7 For the structure of the temperature and pressure sensor of the utility model Figure Four ;

[0028] Marked in the figure: 1, shell;11, electronic warehouse;12, flange;13, warehouse body;14, heat insulation sleeve;15, second electric joint;16, third sealing ring;17, second limiting piece;2, probe assembly;21, wiring hole;22, first electric joint;23, second sealing ring;24, base;25, connecting pipe;26, pressure detection probe;27, temperature detection probe;28, first limiting piece;29, limiting sleeve;210, pressure detection hole;211, first sealing ring;3, circuit transmission assembly;31, support;32, PCB board;33, limiting ring;4, flying wire. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] The person skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means to be within the scope of the utility model and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0031] The technical scheme of the utility model will be described below with reference to the accompanying drawings Figure 1 to the accompanying drawings Figure 7 The utility model discloses an underwater temperature and pressure sensor.

[0032] At present, the prior art only sets up a group of temperature and pressure detection probes, once the temperature detection probe or the pressure detection probe is damaged and fails, normal measurement work can not be carried out, which seriously affects production, and the shell of the existing measuring device can be sealed and failed under high pressure, causing the measured medium to flow into the inside of the measuring device, causing circuit component short circuit or medium leakage and environmental pollution.

[0033] Therefore, the underwater temperature and pressure sensor comprises a shell 1, an electronic bin 11 is formed in the shell 1, the electronic bin 11 is used for circuit transmission assembly 3 wiring, a mounting hole is formed in the first direction end A of the shell 1, the mounting hole is inserted with a probe assembly 2, the mounting hole is communicated with the electronic bin 11, after the probe assembly 2 is inserted with the mounting hole, the probe assembly 2 is sealingly connected with the mounting hole, the probe assembly 2 is communicatedly connected with the flying wire 4 assembly, the second direction end B of the shell 1 is fixedly connected with the flying wire 4, the second direction end B of the shell 1 is formed with a communication hole, the communication hole is communicated with the electronic bin 11, and the circuit transmission assembly 3 is communicatedly connected with the flying wire 4 through the communication hole.

[0034] Specifically, after the probe assembly 2 is inserted with the mounting hole, the probe assembly 2 is sealingly fixed with the mounting hole, a first sealing ring 211 is arranged at the connecting position of the probe assembly 2 and the mounting hole, a first sealing barrier is formed by sealingly welding and fixing between the probe assembly 2 and the shell 1, and a second sealing barrier is formed by the first sealing ring 211 arranged between the probe assembly 2 and the shell 1, so that the measured medium needs to break through the above multiple sealing barriers to flow to the electronic bin 11, the risk of medium leakage is reduced, and the reliability of the temperature and pressure sensor is significantly improved.

[0035] Further, the probe assembly 2 comprises a base 24, two pressure detection probes 26 and two temperature detection probes 27 are arranged in the base 24, the two pressure detection probes 26 and the two temperature detection probes 27 are symmetrically arranged, and the two pressure detection probes 26 and the two temperature detection probes 27 are in communication connection with the circuit transmission assembly 3.

[0036] Preferably, the two pressure detection probes 26 and the two temperature detection probes 27 are symmetrically arranged, and in the smallest possible size of the probe assembly 2, the reliability of the temperature and pressure sensor is greatly improved by symmetrically arranging two sets of redundant pressure detection probes 26 and temperature detection probes 27, and in other embodiments of the utility model, the two sets of pressure detection probes 26 and temperature detection probes 27 can also be asymmetrically arranged.

[0037] Further, the probe assembly 2 comprises a connecting pipe 25, the base 24 is sealingly fixed with the connecting pipe 25, a wiring hole 21 is formed in the connecting pipe 25, the wiring hole 21 is in communication with the electronic bin 11 after the probe assembly 2 is inserted into the mounting hole, a first electrical connector 22 is inserted into the wiring hole 21, a first direction end A of the first electrical connector 22 is electrically connected with the pressure detection probe 26 and the temperature detection probe 27 through a lead wire, and a second direction end B of the first electrical connector 22 is electrically connected with the circuit transmission assembly 3 through a lead wire.

[0038] Preferably, in order to facilitate welding, the connecting pipe 25 is formed with a stepped surface, the stepped surface is flush with the first direction end A of the shell 1 after the connecting pipe 25 is inserted into the mounting hole, and in other embodiments of the utility model, the stepped surface can also be cancelled and directly welded.

[0039] After the first electrical connector 22 is inserted into the wiring hole 21, a second sealing ring 23 is arranged at the connection between the first electrical connector 22 and the wiring hole 21, and a third sealing barrier is formed by arranging the second sealing ring 23 in addition to the sealing welding between the first sealing ring 211, the probe assembly 2 and the shell 1, so that the measured medium needs to break through the above-mentioned multiple sealing barriers to flow to the electronic bin 11, thereby reducing the risk of medium leakage and significantly improving the reliability of the temperature and pressure sensor.

[0040] Further, the wiring hole 21 is provided with a first limiting piece 28, a threaded hole is formed in the second direction end B of the wiring hole 21, and the wiring hole 21 is screwed with a limiting sleeve 29 through the thread, after the first electrical connector 22 is inserted into the wiring hole 21, the first direction end A of the first electrical connector 22 abuts against the first limiting piece 28, then the limiting sleeve 29 is screwed into the wiring hole 21 until the limiting sleeve 29 abuts against the second direction end B of the first electrical connector 22, so as to detachably fix the first electrical connector 22, thereby facilitating maintenance in the later period.

[0041] Preferably, the first limiting part 28 is a limiting ring 33, and in other embodiments of the utility model, it can also be a limiting step, a limiting block, a limiting strip, a limiting protrusion, etc.

[0042] Further, the base 24 is provided with a pressure detection hole 210, the pressure detection hole 210 is communicated with the wiring hole 21, the pressure detection probe 26 is arranged in the pressure detection hole 210, the sensing end of the pressure detection probe 26 faces outward of the pressure detection hole 210, the output end of the pressure detection probe 26 faces inward of the wiring hole 21, through the arrangement of the pressure detection hole 210, the pressure detection probe 26 is in close contact with the measured medium, the sensitivity of the temperature and pressure sensor is effectively improved, the installation space of the sensor is saved, and the use range is expanded.

[0043] And for the temperature detection probe 27, the base 24 can be made of a heat-conducting material, and the temperature can also be measured in the same way as the detection hole.

[0044] The shell 1 comprises a main flange 12 and a warehouse body 13 coaxially arranged, one end of the main flange 12 is fixedly connected with the probe assembly 2, the other end of the main flange 12 away from the probe assembly 2 is sealingly welded and fixed with the warehouse body 13, the inside of the warehouse body 13 forms the electronic warehouse 11, the circuit transmission assembly 3 is arranged in the electronic warehouse 11, and the other end of the warehouse body 13 away from the main flange 12 is sealingly connected with the flying wire 4. The shell 1 is formed by connecting the main flange 12 and the warehouse body 13, so that the structure of the shell 1 is more reasonable and convenient for processing.

[0045] The electronic warehouse 11 is provided with a heat insulation sleeve 14, the heat insulation sleeve 14 is flush with the inner wall of the electronic warehouse 11, and the circuit transmission assembly 3 is arranged in the heat insulation sleeve 14. Specifically, the heat insulation sleeve 14 is arranged at the connecting position of the main flange 12 and the warehouse body 13, and through the arrangement of the heat insulation sleeve 14, the influence of high temperature on the normal work of the circuit transmission assembly 3 during welding is avoided.

[0046] Further, the communication hole is fixedly connected with a second electric connector 15, a first direction end A of the second electric connector 15 is electrically connected with the circuit transmission assembly 3, a second direction end B of the second electric connector 15 is electrically connected with the flying wire 4, a third sealing ring 16 is arranged at the connecting position of the second electric connector 15 and the communication hole, and a second limiting part 17 is arranged at the end of the communication hole away from the circuit transmission assembly 3, and the second limiting part 17 abuts against the second electric connector 15.

[0047] Preferably, the second limiting part 17 is a limiting ring 33, and in other embodiments of the utility model, it can also be a limiting step, a limiting block, a limiting strip, a limiting protrusion, etc., and the structure of the second limiting ring 33 and the first limiting ring 33 can be the same or different.

[0048] Further, the circuit transmission assembly 3 comprises a bracket 31, two PCB boards 32 are installed on the bracket 31, two limiting rings 33 are formed at two ends of the bracket 31, the limiting rings 33 at the two ends are respectively abutted with two end faces of the electronic bin 11, the limiting ring 33 at the first direction end A is arranged in the heat insulation sleeve 14, and the fourth sealing ring is arranged between the limiting ring 33 at the first direction end A and the side wall of the electronic bin 11, and the inner wall of the limiting ring 33 at the second direction end B is in interference fit with the second electric connector 15.

[0049] Based on the circuit transmission assembly 3, the lead wires of the pressure detection probe 26 and the temperature detection probe 27 are connected with the input end of the first electric connector 22, the output end of the first electric connector 22 is connected with the two PCB boards 32 through lead wires, the output ends of the two PCB boards 32 are connected with the input end of the second electric connector 15 through lead wires, and the output end of the second electric connector 15 is connected with the flying wire 4 through lead wires, so that the flying wire 4 is connected with the offshore oil platform, and the detection and transmission of the underwater temperature and pressure data are realized.

[0050] The third sealing ring 16 and the fourth sealing ring are arranged, so that two sealing barriers are formed between the shell 1 and the flying wire 4, and the measured medium needs to break through the two sealing barriers to enter the electronic bin 11.

[0051] Meanwhile, since the two ends of the electronic bin 11 are formed with at least two sealing barriers, even if the measured medium breaks through the sealing barriers between the probe assembly 2 and the shell 1 or between the shell 1 and the electric connector to enter the electronic bin 11, the sealing barrier formed by the electric connector and the sealing ring on the other side can also limit the high-pressure medium in the electronic bin, and the medium cannot leak out to pollute the environment.

[0052] In the example, the flying wire 4 adopts a plate type wet plug connector, and the outgoing angle of the flying wire 4 is 90°, of course, in other optional embodiments, the outgoing angle of the flying wire 4 can also be 45°, 60° or 180°, and the flying wire 4 can be customized according to requirements.

[0053] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, all the embodiments are not enumerated. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An underwater temperature and pressure sensor, characterized by, The shell is provided with an electronic compartment for circuit transmission component wiring, a mounting hole is formed in the first direction end of the shell, a probe assembly is inserted into the mounting hole, the probe assembly is in sealing connection with the mounting hole after being inserted into the mounting hole, the probe assembly is in communication connection with the flying wire assembly, the second direction end of the shell is fixedly connected with a flying wire, a communication hole is formed in the second direction end of the shell, the communication hole is in communication connection with the electronic compartment, and the circuit transmission component is in communication connection with the flying wire through the communication hole.

2. The underwater temperature and pressure sensor of claim 1, wherein, The probe assembly is in sealing connection with the mounting hole after being inserted into the mounting hole.

3. The underwater temperature and pressure sensor of claim 1, wherein, The probe assembly comprises a base, two pressure detection probes and two temperature detection probes are arranged in the base, the two pressure detection probes and the two temperature detection probes are symmetrically arranged, and the two pressure detection probes and the two temperature detection probes are in communication connection with the circuit transmission component.

4. The underwater temperature and pressure sensor of claim 3, wherein, The probe assembly comprises a connecting pipe, the base is sealingly fixed with the connecting pipe, a wiring hole is formed in the connecting pipe, the wiring hole is in communication connection with the electronic compartment after the probe assembly is inserted into the mounting hole, a first electric connector is inserted into the wiring hole, a first direction end of the first electric connector is electrically connected with the pressure detection probe and the temperature detection probe through a lead wire, and a second direction end of the first electric connector is electrically connected with the circuit transmission component through a lead wire.

5. The underwater temperature and pressure sensor of claim 4, wherein, A second sealing ring is arranged at the connection between the first electric connector and the wiring hole after the first electric connector is inserted into the wiring hole.

6. The underwater temperature and pressure sensor of claim 5, wherein, A first limiting piece is arranged in the wiring hole, a thread is formed in the second direction end of the wiring hole, the wiring hole is screw-connected with a limiting sleeve through the thread, the first direction end of the first electric connector is abutted against the first limiting piece after the first electric connector is inserted into the wiring hole, and then the limiting sleeve is screw-connected into the wiring hole until the limiting sleeve is abutted against the second direction end of the first electric connector.

7. The underwater temperature and pressure sensor of claim 1, wherein, A pressure detection hole is formed in the base, the pressure detection hole is in communication connection with the wiring hole, the pressure detection probe is arranged in the pressure detection hole, a sensing end of the pressure detection probe faces outward of the pressure detection hole, and an output end of the pressure detection probe faces inward of the wiring hole.

8. The underwater temperature and pressure sensor of claim 1, wherein, A heat insulation sleeve is arranged in the electronic compartment, the heat insulation sleeve is flush with the inner wall of the electronic compartment, and the circuit transmission component is arranged in the heat insulation sleeve.

9. The underwater temperature and pressure sensor of claim 1, wherein, A second electric connector is fixedly connected in the communication hole, a first direction end of the second electric connector is electrically connected with the circuit transmission component, a second direction end of the second electric connector is electrically connected with the flying wire, a third sealing ring is arranged at the connection between the second electric connector and the communication hole, a second limiting piece is arranged at the end of the communication hole away from the circuit transmission component, and the second limiting piece is abutted against the second electric connector.

10. The underwater temperature-pressure sensor according to claim 8 or 9, characterized in that The circuit transmission component comprises a support, two PCB boards are arranged on the support, two limiting rings are formed at the two ends of the support, the two limiting rings are respectively abutted against the two end faces of the electronic compartment, a fourth sealing ring is arranged between the limiting ring at the first direction end and the side wall of the electronic compartment, and the inner wall of the limiting ring at the second direction end is in interference fit with the second electric connector.

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