High-precision temperature sensor
By designing a removable sensing housing and a sliding cylinder structure with length adjustment, the problem of high-precision temperature sensor probes is solved, and the detection accuracy and adaptation range are improved, and the temperature sensing flexibility is achieved. and accuracy.
Patent Information
- Application Number
- CN202421195753.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-28
AI Technical Summary
During use of high-precision temperature sensors, the sensor probe is easily corroded or contaminated, and its length is fixed, which cannot meet the needs of different measurement lengths, affecting the detection accuracy and adaptation range.
A temperature sensor including a sensor head, a sensor housing, a sliding cylinder and a hollow rod is designed to remove and replace the sensing housing through a threaded sleeve and a sealing ring, and adjust the sliding cylinder and a hollow rod through a spring and a limiting rod. length to improve sensor flexibility and accuracy.
The sensor replacement and length adjustment are realized, the detection accuracy and adaptation range are improved, the sensor probe corrosion and dirt influence is avoided, and the flexibility and accuracy of temperature sensing are enhanced.
Smart Images
Figure CN222298980U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of temperature sensors, in particular to a high-precision temperature sensor. Background Art
[0002] High-precision temperature sensors are sensors that convert temperature into electrical quantity by utilizing the law that various physical properties of materials change with temperature. These physical properties that show regular changes mainly include body. Temperature sensors are the core part of temperature measuring instruments. There are many varieties. They can be divided into two categories according to the measurement method: contact and non-contact. They can be divided into two categories: thermal resistors and thermocouples according to the characteristics of sensor materials and electronic components.
[0003] During the use of high-precision temperature sensors, contact temperature sensors are generally used to measure the temperature of the fluid, but the sensor probe will often be in direct contact with the measured fluid, and the outer wall of the sensor probe is easily corroded, or the outer wall of the sensor probe is stained with dirt, which affects the detection accuracy of the temperature sensor. In addition, the length of high-precision temperature sensors is fixed and can only be extended to a fixed length for measurement, resulting in a low measurement adaptation length range. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a high-precision temperature sensor, which solves the problems that the sensor probe is often in direct contact with the measured fluid, the outer wall of the sensor probe is easily corroded, or the outer wall of the sensor probe is stained with dirt, thereby affecting the detection accuracy of the temperature sensor; and the length of the high-precision temperature sensor is fixed and can only be extended to a fixed length for measurement.
[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-precision temperature sensor, including a temperature sensor body, the temperature sensor body including a sensor head and a sensor housing, one side of the outer surface of the sensor head is fixedly connected to a threaded sleeve, one side of the inner surface of the sensor housing is provided with a threaded groove matched with the threaded sleeve, the inner surface of the sensor housing and one side located on the threaded groove is fixedly connected to a first sealing ring, and the outer surface of the sensor head and one side located on the threaded sleeve is fixedly connected to a second sealing ring matched with the first sealing ring.
[0006] Preferably, a sensing circuit is provided on one side of the sensing head, and a sliding cylinder is fixedly connected to one side of the sensing head and located outside the sensing circuit.
[0007] Preferably, a hollow rod is slidably connected inside the sliding cylinder, and a limiting rod is slidably connected to the top of the outer surface of the sliding cylinder through an opening.
[0008] Preferably, one end of the limiting rod is fixedly connected to a circular plate, and a spring is fixedly connected to the outer surface of the limiting rod and located between the sliding cylinder and the circular plate.
[0009] Preferably, a plurality of limiting holes matching the limiting rods are provided on the top of the outer surface of the hollow rod.
[0010] Preferably, a heat-conducting tube matching the sensor head is fixedly mounted on the inner surface of the sensor housing.
[0011] Beneficial Effects
[0012] The utility model provides a high-precision temperature sensor. Compared with the existing technology, it has the following
[0013] Beneficial effects:
[0014] (1) The utility model rotates the sensor housing so that the thread groove on the sensor housing rotates out from the surface of the threaded sleeve, so that the sensor housing is removed from the surface of the sensor head, thereby conveniently replacing the sensor housing. The sensor housing is rotated and sleeved on the threaded sleeve so that the first sealing ring and the second sealing ring are squeezed and fitted to seal. The heat is conducted to the sensor head through the heat conduction tube, so that the temperature can be conveniently sensed, thereby improving the detection accuracy of the temperature sensor.
[0015] (2) The utility model pulls the circular plate upward so that the circular plate pulls the limit rod upward to disengage from the limit hole, and then pulls the hollow rod out of the sliding tube. Through the action of the spring, the limit rod is inserted into other limit holes to limit the hollow rod, thereby conveniently adjusting the length of the sliding tube and the hollow rod, and conveniently adjusting the length of the temperature sensor body, thereby increasing the detection length range of the temperature sensor body. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the external structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the internal structure of the sensor head, sensor housing, sliding cylinder and hollow rod of the utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the sensing circuit, sensing head, threaded sleeve and second sealing ring of the utility model;
[0019] Figure 4 For this utility model Figure 2 A partial enlarged view of the middle A;
[0020] Figure 5 It is a structural schematic diagram of the hollow rod and the limiting hole of the utility model;
[0021] Figure 6 The figure is a schematic diagram of the internal structure of the sensor housing, the threaded groove, the first sealing ring and the heat-conducting tube of the utility model.
[0022] In the figure: 1. temperature sensor body; 2. sensing circuit; 3. sliding cylinder; 4. hollow rod; 5. limiting rod; 6. circular plate; 7. spring; 8. limiting hole; 11. sensing head; 12. sensing housing; 13. threaded sleeve; 14. threaded groove; 15. first sealing ring; 16. second sealing ring; 17. heat-conducting cylinder. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0024] See also Figure 1-6 The utility model provides a technical solution: a high-precision temperature sensor, including a temperature sensor body 1, the temperature sensor body 1 includes a sensor head 11 and a sensor housing 12, a threaded sleeve 13 is fixedly connected to one side of the outer surface of the sensor head 11, a threaded groove 14 matched with the threaded sleeve 13 is opened on one side of the inner surface of the sensor housing 12, a first sealing ring 15 is fixedly connected to the inner surface of the sensor housing 12 and located on one side of the threaded groove 14, a second sealing ring 16 matched with the first sealing ring 15 is fixedly connected to the outer surface of the sensor head 11 and located on one side of the threaded sleeve 13, and a heat-conducting tube 17 matched with the sensor head 11 is fixedly installed on the inner surface of the sensor housing 12. As a detailed description, the heat-conducting tube 17 is made of copper and can completely transfer external heat to the sensor head 11.
[0025] It should be noted that the first sealing ring 15 and the second sealing ring 16 are both made of rubber, and the opposite sides of the first sealing ring 15 and the second sealing ring 16 are both inclined surfaces, so that the first sealing ring 15 and the second sealing ring 16 are squeezed and sealed.
[0026] Furthermore, in order to facilitate the adjustment of the use length of the temperature sensor body 1, a sensing circuit 2 is provided on one side of the sensing head 11, a sliding cylinder 3 is fixedly connected to one side of the sensing head 11 and located outside the sensing circuit 2, a hollow rod 4 is slidably connected to the inside of the sliding cylinder 3, a limiting rod 5 is slidably connected to the top of the outer surface of the sliding cylinder 3 through an opening, a circular plate 6 is fixedly connected to one end of the limiting rod 5, a spring 7 is fixedly connected to the outer surface of the limiting rod 5 and located between the sliding cylinder 3 and the circular plate 6, and a plurality of limiting holes 8 matching the limiting rod 5 are opened on the top of the outer surface of the hollow rod 4.
[0027] When in use, the circular plate 6 is pulled upward to drive the limiting rod 5 to move upward, and the limiting rod 5 will be separated from the sliding cylinder 3 and the limiting hole 8, and then the hollow rod 4 is pulled to the right to extend the hollow rod 4 from the sliding cylinder 3, and then the limiting rod 5 is inserted into the limiting hole 8 on the left by the action of the spring 7, so that the limiting rod 5 limits the sliding cylinder 3 and the hollow rod 4, so that the length of the sliding cylinder 3 and the hollow rod 4 increases;
[0028] When the sensing housing 12 needs to be replaced, the sensing housing 12 is rotated so that the sensing housing 12 is rotated out from the surface of the threaded sleeve 13, so that the sensing housing 12 is disassembled for replacement, and then the new sensing housing 12 is put on the sensing head 11, and the sensing housing 12 is rotated on the threaded sleeve 13, so that the first sealing ring 15 and the second sealing ring 16 are tightly attached, and temperature sensing is performed through the temperature sensor body 1, so that the temperature of the surface of the sensing housing 12 is transmitted to the sensing head 11 through the heat conductive tube 17.
Claims
1. A high-precision temperature sensor, comprising a temperature sensor body (1), characterized in that: The temperature sensor body (1) comprises a sensing head (11) and a sensing housing (12); a threaded sleeve (13) is fixedly connected to one side of the outer surface of the sensing head (11); a threaded groove (14) matching the threaded sleeve (13) is provided on one side of the inner surface of the sensing housing (12); a first sealing ring (15) is fixedly connected to the inner surface of the sensing housing (12) and located on one side of the threaded groove (14); and a second sealing ring (16) matching the first sealing ring (15) is fixedly connected to the outer surface of the sensing head (11) and located on one side of the threaded sleeve (13).
2. A high-precision temperature sensor according to claim 1, characterized in that: A sensing circuit (2) is provided on one side of the sensing head (11), and a sliding cylinder (3) is fixedly connected to one side of the sensing head (11) and located outside the sensing circuit (2).
3. A high-precision temperature sensor according to claim 2, characterized in that: The interior of the sliding cylinder (3) is slidably connected to a hollow rod (4), and the top of the outer surface of the sliding cylinder (3) is slidably connected to a limiting rod (5) via an opening.
4. A high-precision temperature sensor according to claim 3, characterized in that: One end of the limiting rod (5) is fixedly connected to a circular plate (6), and a spring (7) is fixedly connected to the outer surface of the limiting rod (5) and located between the sliding cylinder (3) and the circular plate (6).
5. A high-precision temperature sensor according to claim 3, characterized in that: A plurality of limiting holes (8) matching the limiting rods (5) are provided on the top of the outer surface of the hollow rod (4).
6. A high-precision temperature sensor according to claim 3, characterized in that: A heat-conducting tube (17) adapted to the sensor head (11) is fixedly mounted on the inner surface of the sensor housing (12).