Underwater multi-probe temperature transmitter and assembly

Abstract

The utility model discloses an underwater multi-probe type temperature transmitter and an underwater multi-probe type temperature transmitter assembly, and belongs to the technical field of sensors. Comprising a transmitter shell, N temperature probes, a processing unit in the transmitter shell and a connector on the transmitter shell, the temperature probes, the processing unit and the connector are electrically connected in sequence, and the temperature probes are vertically arranged; n protruding parts are arranged at the bottom of the transmitter shell, telescopic protrusions which elastically stretch upwards are arranged at the bottoms of the protruding parts, and the N temperature probes are arranged on the N telescopic protrusions respectively. According to the utility model, the sensor is fixed on a measured medium through the mounting plate, and the metal shell is not necessarily a plane, so that the telescopic probe can play a key role at the moment. The plurality of temperature measuring probes can automatically adjust the telescopic distance according to the difference of the flatness of the surface of the metal shell to be measured, so that the plurality of temperature measuring probes can be tightly contacted with the metal shell to be measured. The plurality of probes measure temperature signals and transmit the temperature signals to the processing unit.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, and specifically relates to an underwater multi-probe temperature transmitter and its components. Background Technology

[0002] With the latest developments in sensors, microelectronics, and computers, modern marine research and development have made significant progress. Underwater temperature transmitters are primarily used to measure the surface temperature of the metal hulls of surface equipment (such as ship hulls) or underwater equipment (such as submarines and drilling platforms). They measure whether the underwater metal temperature is affected by movement speed, ocean currents, and pressure, which has extremely important implications for both military and civilian applications.

[0003] Existing underwater temperature transmitters only have one temperature probe, which is in direct contact with the surface of the metal casing being measured. Due to the uneven temperature distribution on the surface of the metal casing, the temperature value measured by a single temperature probe is limited, only reflecting the temperature value at that probe's measuring point, and cannot accurately reflect the temperature value of a large area of ​​the metal casing surface.

[0004] Existing technologies also employ multi-probe solutions, as described in the following patents:

[0005] For example, patent application number CN202022875776.1 discloses a multi-probe segmented temperature transmitter, including a transmitter housing and a metal cover. The temperature transmitter body is fixedly installed inside the transmitter housing, and the housing is also provided with a cover. The transmitter housing is provided with a conductive head, and the conductor of the conductive head is electrically connected to the temperature transmitter body. The conductive head has an external thread on the outer wall surface away from the transmitter housing, and the inner wall surface of the port of the metal cover has an internal thread. The metal cover is threadedly connected to the conductive head. The metal cover is provided with a temperature probe mechanism through wires. The temperature probe mechanism is divided into several temperature probes, and the temperature probes are numbered 1, 2...N respectively.

[0006] For example, patent application number CN202122097279.8 discloses a multi-probe temperature sensor, including an assembly assembly and a temperature sensor body. The assembly assembly includes a distribution cylinder and an orifice plate. The orifice plate is installed on the inner circumference of the distribution cylinder. The orifice plate has multiple mounting holes that are uniformly and vertically opened through it. The temperature sensor body includes probes and a wire groove ring. The wire groove ring is horizontally fixed to the top of the outer circumference of the distribution cylinder. Multiple probes are provided. The multiple probes are uniformly and vertically fixed in the mounting holes of the orifice plate. The multiple probes are connected to the wire groove ring through a transmission line.

[0007] For example, patent application number CN202121886486.5 discloses a multi-head temperature sensor, including a protective shell, a processing unit disposed in the inner cavity of the protective shell, a plurality of probes electrically connected to the processing unit, a shielding chamber disposed on the outer periphery of the probes, a connecting bushing disposed at the connection between the shielding chamber and the protective shell, and a power supply wire electrically connected to the processing unit.

[0008] If multiple temperature probes are installed, since the surface of the metal housing is not entirely flat, there may be gaps between the probe and the metal housing when the temperature probe comes into contact with the metal surface, which may result in insufficient accuracy of the measured temperature value. Summary of the Invention

[0009] To address the aforementioned problems, this utility model provides an underwater multi-probe temperature transmitter and assembly, allowing the temperature probes to be retractable, thus ensuring that the temperature probes remain in close contact with the metal housing. This enables multiple probes to perform high-precision detection, achieving multi-point temperature measurement within a given area. The technical solution is as follows:

[0010] On one hand, this utility model embodiment provides an underwater multi-probe temperature transmitter, including a transmitter housing 1, N temperature probes 2, a processing unit 3 inside the transmitter housing 1, and a connector 4 on the transmitter housing 1. The temperature probes 2, the processing unit 3, and the connector 4 are electrically connected in sequence, and the temperature probes 2 are vertically arranged. The bottom of the transmitter housing 1 is provided with N protrusions 5, and the bottom of the protrusions 5 is provided with upward elastic telescopic protrusions 6. The N temperature probes 2 are respectively disposed on the N telescopic protrusions 6. The processing unit 3 is used to sample and process the N temperature probes 2 respectively and then output them outward.

[0011] In this embodiment of the invention, the transmitter housing 1 includes a circular cover 13, a mounting plate 11, and a sealing ring 12 between them. The circular cover 13 is vertically arranged with an open bottom and a raised edge 14 coaxially arranged on the outer side of its bottom. The mounting plate 11 covers the bottom of the circular cover 13, with its four corners located outside the circular cover 13 and each having an upper mounting hole 15. The four corners are rounded, and its center is located on the axis of the circular cover 13. The processing unit 3 is located at the bottom inside the circular cover 13. The connector 4 is located on the circumferential surface of the circular cover 13, perpendicular to one side of the mounting plate 11, and horizontally arranged. The protrusion 5 is located on the lower side of the mounting plate 11. The sealing ring 12 is located between the raised edge 14 and the mounting plate 11. Multiple fixing bolts 16 are provided between the raised edge 14 and the mounting plate 11 to fix the circular cover 13 and the mounting plate 11. The multiple fixing bolts 16 are evenly distributed around the circular cover 13 and are all vertically arranged.

[0012] In this embodiment of the present invention, the N protrusions 5 are evenly distributed around the axis of the circular cover 13, and are located within the projection area of ​​the circular cover 13. They are distributed in a circular or regular polygonal shape; N is an integer from 3 to 6.

[0013] Specifically, in this embodiment of the present invention, N is 3, the three protrusions 5 are distributed in an equilateral triangle, the distance between two adjacent protrusions 5 is 0-50mm, and the telescopic stroke of the telescopic protrusion 6 is 3-10mm.

[0014] In this embodiment of the invention, the protrusion 5 is a cylindrical structure, vertically arranged, with a circular cavity coaxially arranged inside, and a circular hole coaxially arranged at its bottom for the telescopic protrusion 6 to pass through downwards; the telescopic protrusion 6 is coaxially arranged with the protrusion 5, and is a two-tiered stepped frustum with a larger top and a smaller bottom, which can move up and down within the circular cavity; the temperature probe 2 is coaxially arranged on the telescopic protrusion 6, and is electrically connected to the processing unit 3 through a wire; the upper part of the telescopic protrusion 6 is in clearance fit with the circular cavity, and a spring 7 is provided between its top and the top of the protrusion 5, with its lower part passing through the circular hole and in clearance fit with the circular hole, and its stepped surface abutting against the bottom of the circular cavity; the spring 7 is coaxially arranged with the protrusion 5 and is located inside the circular cavity.

[0015] In this embodiment of the invention, the telescopic protrusion 6 has a stepped hole at its center, which is larger at the top and smaller at the bottom, and mates with the temperature probe 2. The stepped hole is coaxially arranged with the telescopic protrusion 6, and the upper part of its larger hole section is a threaded hole with a locking sleeve 8 on it. The temperature probe 2 is located in the lower part of the larger hole section and inside the smaller hole section of the stepped hole. The locking sleeve 8 is coaxially arranged with the threaded hole, and it has a ring structure. Its lower end rests against the top of the temperature probe 2, and its upper end protrudes upward from the telescopic protrusion 6. The lower end of the spring 7 is sleeved on the upper end of the locking sleeve 8.

[0016] Furthermore, in this embodiment of the present invention, the top of the protrusion 5 is coaxially provided with a connecting part, the outer diameter of the connecting part being smaller than the diameter of the protrusion 5; the mounting plate 11 is provided with a second circular hole for the connecting part to pass through and to cooperate with the connecting part; the connecting part is directly fixed to the mounting plate 11 or locked and fixed to the mounting plate 11 by a locking member, the connecting part passes through the second circular hole upwards, the top of the locking member is provided with a wire-passing hole for the wire to pass through and it is located on the upper side of the mounting plate 11, and the top of the spring 7 abuts against the top of the connecting part or the locking member.

[0017] Specifically, in this embodiment of the present invention, the circular cover 13 is a metal cover, the mounting plate 11 is a metal plate, the connector 4 is a waterproof connector, the protrusion 5, the telescopic protrusion 6 and the locking screw 8 are all plastic parts, and the temperature probe 2 is a PT100 thermal resistor.

[0018] Furthermore, in this embodiment of the present invention, a mounting bracket 17 is provided on the upper side of the mounting plate 11 and inside the dome 13; the upper side of the mounting bracket 17 is provided with a mounting groove, and the lower side is provided with a support protrusion; the processing unit 3 is provided in the mounting groove, and the bottom of the support protrusion is fixed on the mounting plate 11 and is provided to avoid the protrusion 5.

[0019] On the other hand, this utility model embodiment also provides an underwater multi-probe temperature transmitter assembly, including a mounting base 21, a buffer pad, and the aforementioned transmitter, wherein the mounting base 21, the buffer pad, and the transmitter are arranged sequentially from bottom to top; the mounting base 21 is a rectangular box structure that cooperates with the mounting plate 11, with an open bottom, a square hole 22 at the top, flanges 23 on the outer sides of the two opposite sides at the bottom, and a lower mounting hole 24 at the top corresponding to the upper mounting hole 15; the protrusion 5 is located inside the square hole 22, and the flanges 23 are arranged horizontally; the buffer pad is arranged around the square hole 22, is U-shaped, and is located between the top of the mounting base 21 and the mounting plate 11.

[0020] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This patent fixes the sensor to the medium being measured (usually a metal casing) using a mounting plate. Since the metal casing is not necessarily a flat surface, the telescopic probe plays a crucial role. Multiple temperature probes automatically adjust their telescopic distance according to the varying flatness of the metal casing surface, ensuring that all probes make close contact with the casing. The multiple probes measure the temperature signal (resistance value) and transmit it to the processing unit. The processing unit filters, amplifies, and transmits the signal to an external system via a signal cable. Furthermore, the telescopic structure of this patent is simple in design, facilitates temperature probe replacement, and is easy to install. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the underwater multi-probe temperature transmitter in an embodiment of this utility model;

[0022] Figure 2 This is a top view of an underwater multi-probe temperature transmitter.

[0023] Figure 3 This is a bottom view of an underwater multi-probe temperature transmitter.

[0024] Figure 4 yes Figure 1 A magnified view of a portion of the image;

[0025] Figure 5 This is a structural diagram of the mounting plate;

[0026] Figure 6 This is a structural diagram of the mounting base.

[0027] In the diagram: 1 Transmitter housing, 2 Temperature probe, 3 Processing unit, 4 Connector, 5 Protrusion, 6 Telescopic protrusion, 7 Spring, 8 Locking screw, 9 Nameplate;

[0028] 11 Mounting plate, 12 Sealing ring, 13 Round cover, 14 Raised edge, 15 Upper mounting hole, 16 Fixing bolt, 17 Mounting bracket;

[0029] 21 Mounting base, 22 Square hole, 23 Flanged edge, 24 Bottom mounting hole. Detailed Implementation

[0030] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] See Figure 1-5 Example 1 provides an underwater multi-probe temperature transmitter, including a transmitter housing 1, a processing unit 3, a connector 4, N temperature probes 2, N protrusions 5, and N telescopic protrusions 6. The temperature probes 2, processing unit 3, and connector 4 are electrically connected sequentially. The processing unit 3 is located inside the transmitter housing 1, and the connector 4 is located on the transmitter housing 1. The N protrusions 5 are all located at the bottom of the transmitter housing 1, and are evenly distributed around the axis of the circular cover 13 of the transmitter housing 1. They are located within the projection area of ​​the circular cover 13 and are arranged in a circular or regular polygonal pattern (other distribution methods, such as an array, can also be used). N is an integer from 3 to 6. The N temperature probes 2 are respectively located on the N telescopic protrusions 6, and are all vertically oriented. The N telescopic protrusions 6 are respectively located at the bottom of the N protrusions 5 and can elastically extend and retract upwards. During installation, the lower end of the temperature probe 2 rests against the metal housing to be measured. The processing unit 3 is used to sample and process (including amplification, filtering, etc.) the N temperature probes 2 respectively and then output them. It is a conventional structure, and detailed description is omitted in this embodiment.

[0033] Among them, see Figure 1-5The transmitter housing 1 in this embodiment includes a circular cover 13, a mounting plate 11, a sealing ring 12, and a mounting bracket 17. The circular cover 13 is vertically oriented, with a nameplate 9 on its top and an open bottom. A raised edge 14 (a circular ring, horizontally oriented) is coaxially positioned on the outer side of its bottom. The mounting plate 11 covers the bottom of the circular cover 13. It is a square plate (side length greater than the diameter of the circular cover 13), with its four corners located outside the circular cover 13 and each having an upper mounting hole 15 (four in total). The four corners are rounded, and its center is located on the axis of the circular cover 13. A connector 4 is located on the circumference of the circular cover 13, perpendicular to one side of the mounting plate 11, and is horizontally oriented. A protrusion 5 is located on the lower side of the mounting plate 11. The sealing ring 12 is located between the raised edge 14 and the mounting plate 11, and is a circular sealing ring. Multiple (3-8) fixing bolts 16 are provided between the protruding edge 14 and the mounting plate 11 to fix the circular cover 13 to the mounting plate 11. The multiple fixing bolts 16 are evenly distributed around the circular cover 13 and are all vertically arranged. The mounting bracket 17 is located on the upper side of the mounting plate 11, inside the circular cover 13, and below the connector 4. It has a mounting groove on its upper side and a support protrusion (specifically a dot-shaped protrusion or annular protrusion, etc.) on its lower side. The processing unit 3 is located in the mounting groove, and the bottom of the support protrusion is fixed to the mounting plate 11 and is arranged to avoid the protrusion 5.

[0034] Among them, see Figure 1-5 In this embodiment of the invention, the protrusion 5 is a cylindrical structure, vertically arranged, with a circular cavity coaxially arranged inside. A circular hole with a diameter of 15-35mm is coaxially arranged at its bottom for the telescopic protrusion 6 to pass through downwards. The telescopic protrusion 6 is coaxially arranged with the protrusion 5 and is a two-tiered stepped frustum, wider at the top and narrower at the bottom, allowing it to move up and down within the circular cavity. A stepped hole, wider at the top and narrower at the bottom, is located at the center of the protrusion and mates with the temperature probe 2. The upper part of the telescopic protrusion 6 is in clearance fit with the circular cavity, and a spring 7 is provided between its top and the top of the protrusion 5. The lower part of the spring 7 passes through the circular hole and is in clearance fit with it, with its stepped surface resting against the bottom of the circular cavity. The stepped hole is coaxially arranged with the telescopic protrusion 6, and the upper part of its larger section is a threaded hole with a locking screw 8. Temperature probe 2 is located in the lower part of the large hole section and inside the small hole section of the stepped hole. It is a two-tiered stepped frustum, larger at the top and smaller at the bottom, with a telescopic protrusion 6 protruding from its lower end. It is electrically connected to the processing unit 3 via a wire (passing upward through the circular cavity and mounting plate 11). Locking sleeve 8 is coaxially arranged with the threaded hole. It has an annular structure (the central hole allows the wire to pass through). Its lower end rests against the top of temperature probe 2, and its upper end protrudes upward with the telescopic protrusion 6. Spring 7 is coaxially arranged with the protrusion 5. It is located inside the circular cavity, and its lower end is fitted onto the upper end of locking sleeve 8.

[0035] Example 2

[0036] See Figure 1Example 2 provides an underwater multi-probe temperature transmitter, whose structure is basically the same as that of Example 1, except that the underwater multi-probe temperature transmitter in this example is located at the bottom of the hull. N is 3, and the three protrusions 5 are distributed in an equilateral triangle, with the distance between two adjacent protrusions 5 being 0-50mm. The telescopic protrusion 6 has a telescopic stroke of 3-10mm.

[0037] Example 3

[0038] See Figure 1 Example 3 provides an underwater multi-probe temperature transmitter, whose structure is basically the same as that of Example 1, except that the underwater multi-probe temperature transmitter in this example is located at the bottom of the hull. N is 3, and the three protrusions 5 are distributed in an equilateral triangle, with a distance of 26mm between two adjacent protrusions 5. The telescopic protrusion 6 has a telescopic stroke of 5mm. There are six fixing bolts 16. The connector 4 is located on the left side of the circular cover 13 and is arranged in the left-right direction. The mounting plate 11 and the nameplate 9 are both arranged in the front-back direction.

[0039] Example 4

[0040] Example 4 provides an underwater multi-probe temperature transmitter, whose structure is basically the same as that of Example 1, except that: in this example, the circular cover 13 is a metal cover (specifically, it can be aluminum alloy or stainless steel, etc.), the mounting plate 11 is a metal plate (specifically, it can be aluminum alloy or stainless steel, etc.), the connector 4 is a waterproof connector (a conventional structure), the protrusion 5, the telescopic protrusion 6 and the locking nut 8 are all plastic parts (specifically, they can be made of polytetrafluoroethylene), and the temperature probe 2 is a PT100 resistance temperature detector.

[0041] Example 5

[0042] Example 5 provides an underwater multi-probe temperature transmitter, whose structure is basically the same as that of Example 1, except that: in this example, the top of the protrusion 5 is coaxially provided with a connecting part (not shown in the figure). The outer diameter of the connecting part is smaller than the diameter of the protrusion 5. The mounting plate 11 is provided with a second circular hole for the connecting part to pass through and to mate with the connecting part (clear fit, tight fit, or threaded fit, etc.). The connecting part is directly fixed to the mounting plate 11 (e.g., by threaded connection, etc.) or locked to the mounting plate 11 by a locking member. The connecting part passes through the second circular hole upwards. The top of the locking member is provided with a wire-passing hole for the wire to pass through, which is located on the upper side of the mounting plate 11 and is connected to the upper end of the connecting part by threaded connection or snap-fit, etc. The top of the spring 7 abuts against the top of the connecting part or the locking member.

[0043] Example 6

[0044] Example 6 provides an underwater multi-probe temperature transmitter assembly, including a mounting base 21, a buffer pad, and the transmitters disclosed in Examples 1-5. The mounting base 21, buffer pad, and transmitter are arranged sequentially from bottom to top. The mounting base 21 is fixed to the inner wall of the medium to be detected (such as the inner wall of a ship's hull, the inner wall of underwater equipment, etc.). See also Figure 6 The mounting base 21 is a rectangular box structure that mates with the mounting plate 11 (its four sides are flush with the four sides of the mounting plate 11). It has an open bottom, a square hole 22 at the top, flanges 23 on the outer sides of its two opposite bottom edges, and a lower mounting hole 24 at the top corresponding to the upper mounting hole 15. A protrusion 5 is located within the square hole 22, and the flanges 23 are horizontally positioned with their bottom resting against the medium to be tested. A buffer pad, U-shaped, surrounds the square hole 22 and is located between the top of the mounting base 21 and the mounting plate 11. It has a hole at the lower mounting hole 24 through which mounting bolts pass. The mounting base 21 and the transmitter are fixed to the medium to be tested by mounting bolts passing through the upper mounting hole 15 and the lower mounting hole 24.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An underwater multi-probe temperature transmitter, comprising a transmitter housing (1), N temperature probes (2), a processing unit (3) within the transmitter housing (1), and a connector (4) on the transmitter housing (1), wherein the temperature probes (2), the processing unit (3), and the connector (4) are electrically connected in sequence, and the temperature probes (2) are vertically arranged; characterized in that, The bottom of the transmitter housing (1) is provided with N protrusions (5), and the bottom of the protrusions (5) is provided with an upward elastic telescopic protrusion (6). N temperature probes (2) are respectively provided on the N telescopic protrusions (6). The processing unit (3) is used to sample and process the N temperature probes (2) and output them outward.

2. The underwater multi-probe temperature transmitter of claim 1, wherein, The transmitter housing (1) includes a circular cover (13), a mounting plate (11), and a sealing ring (12) between them; the circular cover (13) is vertically arranged with an open bottom and a raised edge (14) coaxially provided on the outer side of its bottom; the mounting plate (11) covers the bottom of the circular cover (13), with its four corners located outside the circular cover (13) and each of them having an upper mounting hole (15), its four corners being rounded, and its center located on the axis of the circular cover (13); the processing unit (3) is located at the bottom inside the circular cover (13); The connector (4) is located on the circumferential surface of the round cover (13), perpendicular to one side of the mounting plate (11), and is horizontally arranged; the protrusion (5) is located on the lower side of the mounting plate (11), the sealing ring (12) is located between the protruding edge (14) and the mounting plate (11), and multiple fixing bolts (16) are provided between the protruding edge (14) and the mounting plate (11) to fix the round cover (13) and the mounting plate (11). The multiple fixing bolts (16) are evenly distributed around the round cover (13) and are all vertically arranged.

3. The underwater multi-probe temperature transmitter of claim 2, wherein, N protrusions (5) are evenly distributed around the axis of the dome (13), located within the projection area of ​​the dome (13), and are distributed in a circular or regular polygonal shape; N is an integer from 3 to 6.

4. The underwater multi-probe temperature transmitter of claim 3, wherein, N is 3, the three protrusions (5) are distributed in an equilateral triangle, and the distance between two adjacent protrusions (5) is 0-50mm; the telescopic stroke of the telescopic protrusion (6) is 3-10mm.

5. The underwater multi-probe temperature transmitter of claim 3, wherein, The protrusion (5) is a cylindrical structure, vertically arranged, with a circular cavity coaxially arranged inside, and a circular hole coaxially arranged at its bottom for the telescopic protrusion (6) to pass through downwards; the telescopic protrusion (6) is coaxially arranged with the protrusion (5), and is a two-stage stepped frustum with a larger top and a smaller bottom, which can move up and down in the circular cavity; the temperature probe (2) is coaxially arranged on the telescopic protrusion (6), and is electrically connected to the processing unit (3) through a wire; the upper part of the telescopic protrusion (6) is in clearance fit with the circular cavity, and a spring (7) is provided between its top and the top of the protrusion (5), and its lower part passes through the circular hole and is in clearance fit with the circular hole, and its stepped surface rests against the bottom of the circular cavity; the spring (7) is coaxially arranged with the protrusion (5) and is located inside the circular cavity.

6. The underwater multi-probe temperature transmitter of claim 5, wherein, The telescopic protrusion (6) has a stepped hole at its center that is larger at the top and smaller at the bottom and fits with the temperature probe (2); the stepped hole is coaxially arranged with the telescopic protrusion (6), and the upper part of its larger hole section is a threaded hole with a locking sleeve (8) on it; the temperature probe (2) is located in the lower part of the larger hole section and in the smaller hole section of the stepped hole; the locking sleeve (8) is coaxially arranged with the threaded hole, and it is a ring structure, with its lower end abutting against the top of the temperature probe (2) and its upper end protruding upward from the telescopic protrusion (6); the lower end of the spring (7) is sleeved on the upper end of the locking sleeve (8).

7. The underwater multi-probe temperature transmitter of claim 5, wherein, The top of the protrusion (5) is coaxially provided with a connecting part, the outer diameter of which is smaller than the diameter of the protrusion (5); the mounting plate (11) is provided with a second round hole for the connecting part to pass through and cooperate with the connecting part; the connecting part is directly fixed on the mounting plate (11) or locked on the mounting plate (11) by a locking member, the connecting part passes through the second round hole upward, the top of the locking member is provided with a wire hole for the wire to pass through and it is located on the upper side of the mounting plate (11), and the top of the spring (7) abuts against the top of the connecting part or the locking member.

8. The underwater multi-probe temperature transmitter of claim 6, wherein, The circular cover (13) is a metal cover, the mounting plate (11) is a metal plate, the connector (4) is a waterproof connector, the protrusion (5), the telescopic protrusion (6) and the locking screw (8) are all plastic parts, and the temperature probe (2) is a PT100 thermal resistor.

9. The underwater multi-probe temperature transmitter of claim 3, wherein, A mounting bracket (17) is provided on the upper side of the mounting plate (11) and inside the dome (13); the upper side of the mounting bracket (17) is provided with a mounting groove, and the lower side is provided with a support protrusion; the processing unit (3) is located in the mounting groove, and the bottom of the support protrusion is fixed on the mounting plate (11) and is set away from the protrusion (5).

10. An underwater multi-probe temperature transmitter assembly, characterized by, The device includes a mounting base (21), a buffer pad, and a transmitter as described in any one of claims 2-8, wherein the mounting base (21), the buffer pad, and the transmitter are arranged sequentially from bottom to top; the mounting base (21) is a rectangular box structure that mates with the mounting plate (11), with an open bottom, a square hole (22) at the top, flanges (23) on the outer sides of the two opposite sides at the bottom, and a lower mounting hole (24) at the top corresponding to the upper mounting hole (15); the protrusion (5) is located inside the square hole (22), and the flange (23) is horizontally arranged; the buffer pad is arranged around the square hole (22), is U-shaped, and is located between the top of the mounting base (21) and the mounting plate (11).

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