High-protection-grade temperature measuring device for offshore outboard use

Abstract

The invention belongs to the technical field of marine temperature measuring devices, and particularly relates to a high-protection-grade temperature measuring device for offshore outboard use, which comprises a protection box with an aviation plug connector, a base is fixedly arranged at the bottom of the protection box, and a temperature measuring module is arranged in the protection box; the temperature measuring module comprises a temperature transmitter which is fixedly arranged at the top end of a support in a bolted mode, and the support is fixedly arranged at the bottom of the protection box; a temperature sensor capable of elastically shrinking and sliding is coaxially and vertically arranged in the support, the temperature sensor comprises a heat conduction nickel block fixedly arranged at the bottom end, and a temperature measurement resistor is integrally arranged in the heat conduction nickel block; the temperature sensor penetrates through the protection box and enables the heat conduction nickel block to abut against the cabin wall. The base is fixedly arranged on a cabin wall; the temperature measuring resistor is electrically connected with the temperature transmitter through a wire, and the temperature transmitter is electrically connected with the aviation plug. A temperature measurement resistor in the temperature sensor is protected through the heat conduction nickel block; meanwhile, under the action of the support, the base and the protection box, the whole device can adapt to the marine high-humidity and high-salt-fog environment, and the temperature measurement reliability is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of marine temperature measuring devices, and in particular relates to a temperature measuring device with a high protection level for use outside a marine cabin. Background Art

[0002] Temperature measurement devices are widely used in aviation, aerospace, ship systems, automobiles, home appliances, communications, biomedicine and other fields. Commonly used are platinum resistance, thermocouple, mercury, infrared temperature measurement and other forms. The existing high-protection-level temperature measurement devices used outside the marine cabin use platinum resistance temperature measurement, but platinum resistance is used in high humidity and high salt fog environment at sea. Long-term use will cause temperature drift and low reliability. Therefore, considering the special use environment, a new temperature measurement device needs to be redesigned to support the long-term and high-reliability temperature measurement needs at sea. Summary of the invention

[0003] The present invention provides a high-protection-level temperature measuring device for use outside a marine cabin, comprising a protection box with an aviation plug connector, a base fixedly arranged at the bottom of the protection box, and a temperature measuring module arranged in the protection box; the temperature measuring module comprises a temperature transmitter bolted and fixedly arranged at the top end of a bracket, and the bracket is fixedly arranged at the bottom of the protection box; a temperature sensor capable of elastic contraction and sliding is coaxially and vertically arranged in the bracket, and the temperature sensor comprises a heat-conductive nickel block fixedly arranged at the bottom end, and a temperature measuring resistor is integrally arranged in the heat-conductive nickel block; the temperature sensor passes through the protection box and makes the heat-conductive nickel block abut against the cabin wall; the base is fixedly arranged on the cabin wall; the temperature measuring resistor is electrically connected to the temperature transmitter through wiring, and the temperature transmitter is electrically connected to the aviation plug connector.

[0004] Furthermore, the temperature sensor also includes a cylindrical hollow spring seat; an annular limiting boss is provided on the top of the spring seat; the limiting boss slides coaxially in the bracket; a compression spring is coaxially embedded in the top of the spring seat, and a mounting seat for pressing the thermal conductive nickel block is plastic-mounted at the bottom; one end of the compression spring abuts against the temperature sensor; and the limiting boss is located between the protective box and the temperature transmitter.

[0005] Furthermore, there are several temperature measurement modules.

[0006] Furthermore, the protection box comprises a casing with an open top, and an upper cover is sealed and bolted at the top of the casing; the bracket is fixed to the bottom of the casing by a cross screw.

[0007] Furthermore, a sleeve matching the position of the temperature sensor is integrally connected to the bottom of the housing; the spring seat coaxially seals and slides through the sleeve.

[0008] Furthermore, a shielding insulation pad is provided between the casing and the base and they are fastened together by a bolt assembly.

[0009] Furthermore, the bolt assembly includes a spacer embedded in the casing, the shielding insulation pad and the base, and a hexagon socket screw is inserted into the spacer; a first elastic washer and two first flat washers are arranged in sequence from top to bottom between the head of the hexagon socket screw and the casing; a tightening nut is provided on the top of the hexagon socket screw, and a second flat washer and a second elastic washer are arranged in sequence from top to bottom between the tightening nut and the base.

[0010] Furthermore, a first O-ring is provided between the upper cover and the housing, and the first O-ring is embedded in the upper cover.

[0011] Furthermore, a second O-ring is provided between the spring seat and the sleeve, and the second O-ring is coaxially embedded in the spring seat.

[0012] Furthermore, the thermally conductive nickel block is a columnar shell with one end open; the open end of the thermally conductive nickel block is provided with an annular edge for pressing the mounting seat; and potting glue is filled between the inside of the thermally conductive nickel block and the bottom end of the spring seat.

[0013] The beneficial effects brought by the present invention are as follows:

[0014] By attaching the thermal conductive nickel block to the bulkhead, the temperature measuring resistor in the temperature sensor can be protected and its service life can be extended. The temperature sensor and the temperature transmitter are top mounted, which makes the wiring of the temperature sensor and the temperature transmitter natural and the structure more compact. At the same time, with the support, base and protective box, the whole can adapt to the high humidity and high salt fog environment at sea. The temperature sensor will not produce temperature drift in long-term use, which improves the reliability of temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a temperature measuring device with a high protection level for use outside a marine vessel according to an embodiment of the present invention is shown.

[0016] Figure 2 express Figure 1 Schematic diagram of the structure of the temperature sensor.

[0017] Figure 3 express Figure 1 Schematic diagram of the partial connection between the middle casing and the base.

[0018] Figure 4 express Figure 1 main view.

[0019] In the figure, 1. upper cover; 2. first O-ring; 3. temperature transmitter; 4. housing; 5. bracket; 6. compression spring; 7. shielding insulation pad; 8. second O-ring; 9. base; 10. temperature sensor; 11. cross screw; 12. aviation plug connector; 13. spacer; 14. hexagon socket screw; 15. first flat washer; 16. tightening nut; 101. spring seat; 102. wiring; 103. mounting seat; 104. potting glue; 105. thermal conductive nickel block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example

[0022] like Figures 1 to 4 As shown, the present invention provides a high-protection-level temperature measuring device for use outside a marine cabin, comprising a protection box with an aviation plug connector 12, a base 9 fixedly disposed at the bottom of the protection box, and a temperature measuring module disposed in the protection box; the temperature measuring module comprises a temperature transmitter 3 bolted and fixedly disposed at the top of a bracket 5, and the bracket 5 is fixedly disposed at the bottom of the protection box; a temperature sensor 10 capable of elastic contraction and sliding is coaxially and vertically disposed in the bracket 5, the temperature sensor 10 comprises a thermally conductive nickel block 105 fixedly disposed at the bottom, and a temperature measuring resistor is integrally disposed in the thermally conductive nickel block 105; the temperature sensor 10 passes through the protection box and makes the thermally conductive nickel block 105 abut against the cabin wall; the base 9 is fixedly disposed on the cabin wall; the temperature measuring resistor is electrically connected to the temperature transmitter 3 through the wiring 102, and the temperature transmitter 3 is electrically connected to the aviation plug connector 12.

[0023] The material of the protection box is preferably 5A06 aluminum alloy, and the material of the base 9 is preferably 45 steel. The protection box can carry and protect the temperature measurement module, and the base 9 is welded on the bulkhead.

[0024] By using high-purity nickel for the heat-conducting nickel block 105 and attaching the temperature sensor 10 to the bulkhead, the temperature sensor 10 can be protected and its service life can be extended. The temperature sensor 10 and the temperature transmitter 3 are top-mounted, so that the connection between the temperature sensor 10 and the temperature transmitter 3 is natural and the structure is more compact. At the same time, the whole can adapt to the high humidity and high salt fog environment at sea, and the temperature sensor 10 will not produce temperature drift in long-term use, thereby improving the reliability of temperature measurement.

[0025] As an embodiment of the present invention, the temperature sensor 10 also includes a cylindrical hollow spring seat 101; a ring-shaped limiting boss is provided on the top of the spring seat 101; the limiting boss slides coaxially in the bracket 5; a compression spring 6 is coaxially embedded in the top of the spring seat 101, and a mounting seat 103 for pressing a thermal conductive nickel block 105 is plastic-mounted at the bottom; one end of the compression spring 6 abuts against the temperature sensor 10; the limiting boss is located between the protective box and the temperature transmitter 3.

[0026] Specifically, the above-mentioned thermally conductive nickel block 105 is a cylindrical shell with an open end; the open end of the thermally conductive nickel block 105 is provided with an annular edge for pressing the mounting seat 103; the inside of the thermally conductive nickel block 105 and the bottom end of the spring seat 101 are filled with potting glue 104, that is, the spring seat 101 and the thermally conductive nickel block 105 are bonded with thermal conductive silicone grease, and then filled with polyurethane potting glue HL120, which will not be described in detail.

[0027] Here, the contact surface between the temperature sensor 10 and the bulkhead is provided with compressive stress by the compression spring 6. If the surface of the bulkhead is undulating or has different roughness, the compressive stress can be changed by configuring springs with different spring ratios.

[0028] The number of the above-mentioned temperature measurement modules can be several, preferably three.

[0029] The bracket 5 is preferably made of nylon material. Due to the wear resistance and low thermal conductivity of nylon material, it can protect the temperature sensor 10 itself, reduce the heat conduction effect of the side of the temperature sensor 10, and isolate the contact with different metal materials.

[0030] As an embodiment of the present invention, the protection box includes a housing 4 with an open top, the top of which is sealed and bolted with an upper cover 1; a bracket 5 is fixed to the bottom of the housing 4 by a cross screw 11. The protection box enhances both the sealing effect and the effect of blocking electromagnetic waves.

[0031] Here, a first O-ring 2 is provided between the upper cover 1 and the housing 4, and the first O-ring 2 is embedded in the upper cover 1 to play a waterproof and dustproof role. The structural design prevents or reduces the electrochemical corrosion of different metal materials in a salt fog environment. The temperature measurement module can stably measure the temperature of the warehouse wall in a high humidity and high salt fog environment for a long time. The distance between the top of the upper cover 1 and the bottom of the base 9 is H, and H is preferably 89mm.

[0032] The bottom of the housing 4 here can also be integrally connected with a sleeve that matches the position of the temperature sensor 10; the spring seat 101 coaxially seals and slides through the sleeve, that is, a second O-ring 8 is provided between the spring seat 101 and the sleeve, and the second O-ring 8 is coaxially embedded in the spring seat 101. The radial freedom of the spring seat 101 is limited by the sleeve, which can adapt to the environment of mechanical impact. The material of the first O-ring 2 and the second O-ring 8 is preferably nitrile rubber. The base 9 is pre-opened with a through hole to avoid interference with the sleeve, and the details are not repeated.

[0033] In addition, a shielding insulation pad 7 may be provided between the housing 4 and the base 9 and fastened together by a bolt assembly. The shielding insulation pad 7 is preferably made of silicone.

[0034] The bolt assembly here includes a spacer 13 embedded in the casing 4, the shielding insulation pad 7 and the base 9, and a hexagon socket screw 14 is inserted into the spacer 13; a first elastic washer and two first flat washers 15 are arranged in sequence from top to bottom between the head of the hexagon socket screw 14 and the casing 4; a tightening nut 16 is provided on the top of the hexagon socket screw 14, and a second flat washer and a second elastic washer are arranged in sequence from top to bottom between the tightening nut 16 and the base 9.

[0035] When the hull wall is made of titanium alloy material, in order to avoid electrochemical corrosion, the material of the above-mentioned bolt assembly is preferably titanium alloy TC4, and the protective box and the warehouse wall are isolated by a shielding insulation pad 7.

[0036] The manufacturing process of the temperature sensor in the present invention is as follows:

[0037] After cleaning the thermal conductive nickel block 105 with alcohol, arrange them neatly and place them in a blast drying oven for drying at 50℃ for 30 minutes. Apply thermal conductive silicone evenly to the bottom of the temperature sensor 10 and stick it flatly to the bottom of the thermal conductive nickel block 105 without poor contact. Curing at room temperature for 1 hour without moving the thermal conductive nickel block 105. Fix the temperature measuring resistor with HL-1206 potting glue and cure at room temperature for 24 hours. Weld the spring seat 101, thermal conductive nickel block 105 and temperature measuring resistor together with the mounting seat 103 nylon, and use a multimeter to detect the continuity of the wiring 102. Arrange the wiring 102 of the inner hole of the spring seat 101, fill the inner hole of the spring seat 101 with HL-1206 potting glue to seal, and keep the curing time until completion. This ensures the reliability of the temperature sensor 10 in measuring the temperature of the cabin wall.

[0038] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A high protection level temperature measuring device for use outside a marine cabin, characterized in that: The invention comprises a protection box with an aviation plug connector (12), a base (9) is fixedly arranged at the bottom of the protection box, and a temperature measuring module is arranged in the protection box; the temperature measuring module comprises a temperature transmitter (3) bolted and fixedly arranged at the top of a bracket (5), and the bracket (5) is fixedly arranged at the bottom of the protection box; a temperature sensor (10) that can elastically shrink and slide is coaxially and vertically arranged in the bracket (5), and the temperature sensor (10) comprises a heat-conducting nickel block (105) fixedly arranged at the bottom, and a temperature measuring resistor is integrally arranged in the heat-conducting nickel block (105); the temperature sensor (10) passes through the protection box and makes the heat-conducting nickel block (105) abut against the bulkhead; the base (9) is fixedly arranged on the bulkhead; the temperature measuring resistor is electrically connected to the temperature transmitter (3) through a wiring (102), and the temperature transmitter (3) is electrically connected to the aviation plug connector (12).

2. The high protection level temperature measuring device for use outside a marine vessel according to claim 1 is characterized in that: The temperature sensor (10) further comprises a columnar hollow spring seat (101); a ring-shaped limiting boss is arranged on the top of the spring seat (101); the limiting boss slides coaxially in the bracket (5); a compression spring (6) is coaxially embedded in the top of the spring seat (101), and a mounting seat (103) for pressing the heat-conducting nickel block (105) is plastic-mounted on the bottom; one end of the compression spring (6) is in contact with the temperature sensor (10); and the limiting boss is located between the protection box and the temperature transmitter (3).

3. The high protection level temperature measuring device for use outside a marine vessel according to claim 2 is characterized in that: The number of the temperature measurement modules is several.

4. The high protection level temperature measuring device for use outside a marine vessel according to claim 3 is characterized in that: The protective box comprises a casing (4) with an opening at the top, and a top cover (1) is sealed and bolted at the top of the casing (4); the bracket (5) is fixed to the bottom of the casing (4) by a cross screw (11).

5. The high protection level temperature measuring device for use outside a marine vessel according to claim 4 is characterized in that: The bottom of the housing (4) is integrally connected to a sleeve that matches the position of the temperature sensor (10); the spring seat (101) coaxially seals and slides through the sleeve.

6. The high protection level temperature measuring device for use outside a marine vessel according to claim 5 is characterized in that: A shielding insulation pad (7) is provided between the casing (4) and the base (9), and the casing (4) and the base (9) are fastened together by a bolt assembly.

7. The high protection level temperature measuring device for use outside a marine vessel according to claim 6 is characterized in that: The bolt assembly comprises a spacer (13) embedded in the housing (4), the shielding insulation pad (7) and the base (9), wherein a hexagon socket screw (14) is inserted into the spacer (13); a first elastic washer and two first flat washers (15) are arranged in sequence from top to bottom between the head of the hexagon socket screw (14) and the housing (4); a tightening nut (16) is arranged at the top of the hexagon socket screw (14), and a second flat washer and a second elastic washer are arranged in sequence from top to bottom between the tightening nut (16) and the base (9).

8. The high protection level temperature measuring device for use outside a marine vessel according to claim 6 is characterized in that: A first O-type sealing ring (2) is provided between the upper cover (1) and the housing (4), and the first O-type sealing ring (2) is embedded in the upper cover (1).

9. The high protection level temperature measuring device for use outside a marine vessel according to claim 6 is characterized in that: A second O-type sealing ring (8) is provided between the spring seat (101) and the sleeve, and the second O-type sealing ring (8) is coaxially embedded in the spring seat (101).

10. The high protection level temperature measuring device for use outside a marine vessel according to claim 2, characterized in that: The thermally conductive nickel block (105) is a columnar shell with an open end; the open end of the thermally conductive nickel block (105) is provided with an annular edge for pressing the mounting seat (103); and a potting glue (104) is filled between the inside of the thermally conductive nickel block (105) and the bottom end of the spring seat (101).

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