High-sealing platinum resistor temperature sensor

Abstract

The utility model belongs to the technical field of platinum resistor temperature sensors, and particularly relates to a high-sealing platinum resistor temperature sensor, which comprises a rotating shell, and the rotating shell is movably connected with the upper side of a sealing protection assembly through an annular groove formed in the rotating shell. According to the utility model, the hand-held protective shell and the threaded sealing cover are matched with each other, so that the sensor assembly can be protected, and the situation that the sensor assembly is damaged due to collision and friction in the storage or use process, so that the accuracy of a subsequent detection result is influenced is effectively avoided; through mutual cooperation of a rotating shell, a fixing plate, a gear ring and a gear, two threaded rods can be driven to rotate, a mounting plate can be driven to move in the up-down direction through rotation of the two threaded rods under the action of an arranged limiting rod, and then a metal protection pipe can be driven to move in the up-down direction.

Description

Technical Field

[0001] The utility model belongs to the technical field of platinum resistance temperature sensors, and in particular relates to a high-sealing platinum resistance temperature sensor. Background Art

[0002] A temperature sensor is a device that can convert temperature into an output signal. It can generally be divided into two categories: thermal resistors and thermocouples. Platinum resistance temperature sensor is a commonly used temperature sensor. The currently used platinum resistance temperature sensor has a sealing structure composed of a thermally conductive insulating resin and a high-temperature resistant resin glue sealing layer to ensure that the platinum resistance temperature sensor has good sealing performance.

[0003] Problems with existing technologies:

[0004] Most existing high-sealing platinum resistance temperature sensors lack protective measures for the metal protective tube on the sensor, which causes the metal protective tube to be damaged due to collision and friction during storage or use, thereby affecting the accuracy of subsequent platinum resistance sensor line detection results. Utility Model Content

[0005] The purpose of the utility model is to provide a high-sealing platinum resistance temperature sensor, which can solve the problem that most existing high-sealing platinum resistance temperature sensors lack protection measures for the metal protective tube on the sensor, which leads to the metal protective tube being damaged due to collision and friction during storage or use, thereby affecting the accuracy of subsequent platinum resistance sensor line detection results.

[0006] The technical solutions adopted by this utility model are as follows:

[0007] A high-sealing platinum resistance temperature sensor includes a rotating housing, which is movably connected to the upper side of a sealing protection component through an annular groove opened therein, the upper end of the sealing protection component is meshed with a gear ring for transmission, a sensor component is arranged inside the sealing protection component, the upper side of the sensor component is fixedly connected to the upper end of the sealing protection component, the upper end of the sensor component passes through a sleeve and is arranged on the outside of the rotating housing, and the lower end of the sealing protection component is threadedly connected to a threaded sealing cover.

[0008] The sleeve is fixedly connected to a rotating shell with a circular hole opened inside the upper end. Friction stripes are provided on the outer sides of the rotating shell and the threaded sealing cover. Fixed plates are fixedly connected to the left and right ends of the gear ring. The two fixed plates are fixedly connected to the inner side wall of the rotating shell.

[0009] The sealing protection assembly includes a handheld protective shell, an anti-slip cover is provided on the outside of the handheld protective shell, and the handheld protective shell is threadedly connected to a threaded sealing cover with a threaded structure provided inside through a threaded groove provided on the outside of the lower end of the handheld protective shell.

[0010] A circular plate is fixedly connected to the upper end of the handheld protective shell, and the circular plate is movably connected to a rotating shell with an annular groove formed therein. The circular plate is fixedly connected to the upper side of the sensor assembly via a circular through hole formed therein.

[0011] The left and right sides of the circular plate are both fixedly connected with sealing tubes, the two sealing tubes are movably connected to the upper sides of the two threaded rods respectively, and the upper ends of the two threaded rods are both fixedly connected with gears.

[0012] The two gears are meshed with the ring gear for transmission, and the two threaded rods are threadedly connected to a mounting plate with two threaded holes inside. The lower end of the mounting plate is fixedly connected to the sensor assembly, and the mounting plate is movably connected to the two limiting rods through two limiting holes opened inside it.

[0013] The lower ends of the two limiting rods are fixedly connected to the annular plate, and the annular plate is fixedly connected to the lower side of the handheld protective shell. The annular plate is movably connected to the lower ends of the two threaded rods through two connecting holes opened inside the annular plate.

[0014] The sensor assembly includes a metal protective tube, the upper end of the metal protective tube is fixedly connected to the lower end of the mounting plate, a platinum resistance sensing wire is arranged inside the metal protective tube, and sealing resin 1 is filled between the platinum resistance sensing wire and the inside of the metal protective tube.

[0015] The metal protective tube is fixedly connected to the lower side of the data transmission line group through a circular hole opened inside its upper end. The lower end of the data transmission line group passes through the sealing resin and is fixedly connected to the platinum resistance sensing line. The upper end of the data transmission line group passes through the mounting plate and the sleeve in sequence and is arranged on the outside of the rotating shell.

[0016] A connecting tube is sleeved on the upper side of the data transmission line group. Sealing resin 2 is filled between the inside of the connecting tube and the data transmission line group. The connecting tube is fixedly connected to a circular plate with a circular through hole opened inside.

[0017] The technical effects achieved by this utility model are:

[0018] The utility model can protect the sensor assembly through the mutual cooperation between the handheld protective shell and the threaded sealing cover, thereby effectively preventing the sensor assembly from being damaged due to collision and friction during storage or use, thereby affecting the accuracy of subsequent detection results. The mutual cooperation between the rotating shell, the fixed plate, the gear ring and the gear can drive the two threaded rods to rotate. The rotation of the two threaded rods can drive the mounting plate to move in the up and down directions under the action of the set limiting rod, and then drive the metal protective tube to move in the up and down directions, so that the device can conveniently push the metal protective tube out from the inside of the handheld protective shell for operation when performing detection operations, and accordingly, it can be conveniently stored in the inside of the handheld protective shell after the detection is completed. The mutual cooperation between the provided sealing resin 1, the sealing resin 2 and the metal protective tube can ensure the high sealing performance of the platinum resistance sensor line during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main cross-sectional three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional three-dimensional structure of the sealing protection component in the present invention;

[0022] Figure 4 This is a schematic diagram of the main cross-sectional three-dimensional structure of the sensor component in the present invention;

[0023] Figure 5 It is a schematic diagram of the main cross-sectional three-dimensional structure of the rotating shell in the present utility model.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Threaded sealing cover; 2. Sealing protection assembly; 21. Annular plate; 22. Handheld protective shell; 23. Threaded rod; 24. Limiting rod; 25. Anti-slip sleeve; 26. Mounting plate; 27. Gear; 28. Circular plate; 29. ​​Sealing tube; 3. Sensor assembly; 31. Metal protective tube; 32. Platinum resistance sensor wire; 33. Sealing resin 1; 34. Data transmission line group; 35. Connecting tube; 36. Sealing resin 2; 4. Rotating shell; 5. Fixed plate; 6. Sleeve; 7. Annular groove; 8. Gear ring. DETAILED DESCRIPTION

[0026] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0027] like Figure 1-5 As shown, a high-sealing platinum resistance temperature sensor includes a rotating shell 4, which is movably connected to the upper side of the sealing protection component 2 through an annular groove 7 opened inside the rotating shell 4, and the upper end of the sealing protection component 2 is engaged with the gear ring 8 for transmission. A sensor component 3 is arranged inside the sealing protection component 2, and the upper side of the sensor component 3 is fixedly connected to the upper end of the sealing protection component 2. The upper end of the sensor component 3 passes through the sleeve 6 and is arranged on the outside of the rotating shell 4, and the lower end of the sealing protection component 2 is threadedly connected to the threaded sealing cover 1. The mutual cooperation between the provided sealing protection component 2 and the threaded sealing cover 1 can protect the sensor component 3, thereby effectively preventing the sensor component 3 from being damaged due to collision and friction during storage or use, thereby affecting the accuracy of subsequent detection results.

[0028] Furthermore, the sleeve 6 is fixedly connected to the rotating shell 4 with a circular hole formed inside the upper end, and the left and right ends of the ring gear 8 are fixedly connected to the fixed plates 5, and the two fixed plates 5 are fixedly connected to the inner side walls of the rotating shell 4. The rotating shell 4 is rotated and can drive the ring gear 8 to rotate under the action of the fixed plates 5. The rotation of the ring gear 8 can drive the sensor assembly 3 to be moved out from the interior of the sealing protection assembly 2 under the action of the sealing protection assembly 2. At this time, the operator can perform detection operations by holding the sealing protection assembly 2.

[0029] Furthermore, the sealing protection component 2 includes a handheld protective shell 22, and an anti-slip sleeve 25 is provided on the outside of the handheld protective shell 22. The handheld protective shell 22 is threadedly connected to the threaded sealing cover 1 with a threaded structure inside through a threaded groove on the outside of its lower end. The upper end of the handheld protective shell 22 is fixedly connected to a circular plate 28, and the circular plate 28 is movably connected to the rotating shell 4 with an annular groove 7 inside. The circular plate 28 is fixedly connected to the upper side of the sensor component 3 through a circular through hole opened inside it. The left and right sides of the circular plate 28 are fixedly connected with sealing tubes 29. The two sealing tubes 29 are respectively movably connected to the upper sides of the two threaded rods 23. The upper ends of the two threaded rods 23 are fixedly connected with gears 27. The two gears 27 are engaged with the ring gear 8 for transmission. The two threaded rods 23 are threadedly connected to the mounting plate 26 with two threaded holes inside. The lower end of the mounting plate 26 is connected to the sensor assembly 3 is fixedly connected, the mounting plate 26 is movably connected to the two limiting rods 24 through the two limiting holes provided therein, the lower ends of the two limiting rods 24 are fixedly connected to the annular plate 21, the annular plate 21 is fixedly connected to the lower side of the inner portion of the handheld protective shell 22, and the annular plate 21 is movably connected to the lower ends of the two threaded rods 23 through the two connecting holes provided therein. The rotation of the gear ring 8 can drive the two threaded rods 23 to rotate, and then the mounting plate 26 can be driven downward by the action of the two limiting rods 24, thereby achieving the effect of driving the sensor assembly 3 to be removed from the inside of the handheld protective shell 22 through the annular plate 21. The mutual cooperation between the provided handheld protective shell 22 and the threaded sealing cover 1 can protect the sensor assembly 3 and prevent it from being damaged due to collision and friction during storage or use, thereby affecting the accuracy of subsequent detection results.

[0030] The sensor assembly 3 includes a metal protective tube 31, the upper end of which is fixedly connected to the lower end of the mounting plate 26. A platinum resistance sensing wire 32 is provided inside the metal protective tube 31. A sealing resin 33 is filled between the platinum resistance sensing wire 32 and the interior of the metal protective tube 31. The metal protective tube 31 is fixedly connected to the lower side of the data transmission line group 34 through a circular hole opened inside the upper end thereof. The lower end of the data transmission line group 34 passes through the sealing resin 33 and is fixedly connected to the platinum resistance sensing wire 32. The upper end of the data transmission line group 34 passes through the mounting plate 26 and the sleeve 6 in sequence. It is arranged on the outside of the rotating shell 4, and a connecting tube 35 is sleeved on the upper side of the data transmission line group 34. The inside of the connecting tube 35 and the space between the data transmission line group 34 are filled with sealing resin 2 36. The connecting tube 35 is fixedly connected to the circular plate 28 with a circular through hole opened therein. The mutual cooperation between the provided sealing resin 1 33 and the sealing resin 2 36 can ensure the high sealing performance of the sensor assembly 3 during use, and with the cooperation of the metal protective tube 31, it can effectively prevent the platinum resistance sensor line 32 from being corroded and aged by liquid during the detection operation.

[0031] The working principle of this utility model is:

[0032] When using the device for inspection operations, the threaded sealing cover 1 is removed from the handheld protective shell 22 by rotating it, and then the rotating shell 4 is used to drive the ring gear 8 to rotate with the cooperation of the set fixing plate 5. The rotation of the ring gear 8 can drive the two threaded rods 23 to rotate under the action of the set two gears 27. The rotation of the two threaded rods 23 can drive the mounting plate 26 to move downward with the cooperation of the set limiting rod 24, and then drive the metal protective tube 31 to pass through the annular plate 21 and move out of the inside of the handheld protective shell 22. After the metal protective tube 31 moves a certain distance out of the inside of the handheld protective shell 22, the rotation of the set rotating shell 4 is stopped, and then the operator can perform the inspection operation by holding the handheld protective shell 22.

[0033] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A highly sealed platinum resistance temperature sensor, comprising a rotating housing (4), characterized in that: The rotating housing (4) is movably connected to the upper side of the sealing protection component (2) through an annular groove (7) provided therein, the upper end of the sealing protection component (2) is meshed with the gear ring (8) for transmission, a sensor component (3) is provided inside the sealing protection component (2), the upper side of the sensor component (3) is fixedly connected to the upper end of the sealing protection component (2), the upper end of the sensor component (3) passes through the sleeve (6) and is provided on the outer side of the rotating housing (4), and the lower end of the sealing protection component (2) is threadedly connected to a threaded sealing cover (1).

2. The high-sealing platinum resistance temperature sensor according to claim 1, characterized in that: The sleeve (6) is fixedly connected to a rotating housing (4) having a circular hole formed in the interior of the upper end. The left and right ends of the gear ring (8) are fixedly connected to fixed plates (5). The two fixed plates (5) are fixedly connected to the inner side wall of the rotating housing (4).

3. The high-sealing platinum resistance temperature sensor according to claim 1, characterized in that: The sealing protection assembly (2) comprises a handheld protective shell (22), an anti-slip sleeve (25) is provided on the outside of the handheld protective shell (22), and the handheld protective shell (22) is threadedly connected to a threaded sealing cover (1) having a threaded structure provided therein via a threaded groove provided on the outside of the lower end of the handheld protective shell (22).

4. The high-sealing platinum resistance temperature sensor according to claim 3, characterized in that: A circular plate (28) is fixedly connected to the upper end of the handheld protective shell (22), and the circular plate (28) is movably connected to a rotating shell (4) having an annular groove (7) formed therein. The circular plate (28) is fixedly connected to the upper side of the sensor assembly (3) via a circular through hole formed therein.

5. The high-sealing platinum resistance temperature sensor according to claim 4, characterized in that: The left and right sides of the circular plate (28) are fixedly connected to sealing tubes (29), and the two sealing tubes (29) are movably connected to the upper sides of the two threaded rods (23), and the upper ends of the two threaded rods (23) are fixedly connected to gears (27).

6. The high-sealing platinum resistance temperature sensor according to claim 5, characterized in that: The two gears (27) are meshed with the gear ring (8) for transmission, and the two threaded rods (23) are threadedly connected to a mounting plate (26) having two threaded holes therein. The lower end of the mounting plate (26) is fixedly connected to the sensor assembly (3), and the mounting plate (26) is movably connected to the two limiting rods (24) through two limiting holes therein.

7. The high-sealing platinum resistance temperature sensor according to claim 6, characterized in that: The lower ends of the two limiting rods (24) are fixedly connected to the annular plate (21), the annular plate (21) is fixedly connected to the lower side of the handheld protective shell (22), and the annular plate (21) is movably connected to the lower ends of the two threaded rods (23) through two connecting holes opened therein.

8. The high-sealing platinum resistance temperature sensor according to claim 6, characterized in that: The sensor assembly (3) includes a metal protective tube (31), the upper end of the metal protective tube (31) is fixedly connected to the lower end of the mounting plate (26), a platinum resistance sensing wire (32) is provided inside the metal protective tube (31), and a sealing resin (33) is filled between the platinum resistance sensing wire (32) and the inside of the metal protective tube (31).

9. The high-sealing platinum resistance temperature sensor according to claim 8, characterized in that: The metal protective tube (31) is fixedly connected to the lower side of the data transmission line group (34) through a circular hole opened inside the upper end thereof. The lower end of the data transmission line group (34) passes through the sealing resin (33) and is fixedly connected to the platinum resistance sensing line (32). The upper end of the data transmission line group (34) passes through the mounting plate (26) and the sleeve (6) in sequence and is arranged on the outer side of the rotating housing (4).

10. The high-sealing platinum resistance temperature sensor according to claim 9, characterized in that: A connecting tube (35) is sleeved on the upper side of the data transmission line group (34), and a sealing resin 2 (36) is filled between the inside of the connecting tube (35) and the data transmission line group (34). The connecting tube (35) is fixedly connected to a circular plate (28) having a circular through hole therein.

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