Dual tube guard thermocouple

Abstract

The utility model belongs to thermocouple probe protection technical field, and disclose a kind of double-tube protection type thermocouple, including thermocouple terminal box, the bottom end of thermocouple terminal box is fixedly arranged with temperature measuring probe, the outside of temperature measuring probe is fixedly arranged with protection component;Protection component includes the fixed block of fixedly arranged in the bottom end of thermocouple terminal box, the inside rotation of fixed block is provided with protective housing, the both sides of the outer surface of protective housing are fixedly arranged with side plate, the inside of side plate is attached and is provided with bottom clamping block, and bottom clamping block is attached in the outer surface of temperature measuring probe, the outer surface of side plate is attached and is provided with first baffle, and the half-closed protective structure is formed in the outside of temperature measuring probe, cooperate first baffle structure design, can be more rigorous protection to temperature measuring probe, in the process of transportation, even if the situation of external force collision or drop, directly protect temperature measuring probe, to avoid temperature measuring probe bending, internal element damage, normal use temperature measuring probe.

Description

Technical Field

[0001] This utility model belongs to the field of thermocouple probe protection technology, specifically a dual-tube protected thermocouple. Background Technology

[0002] Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They consist of two different conductors and can directly measure temperature. They convert the temperature signal into a thermoelectric potential signal, which is then converted into the temperature of the measured medium by an electrical instrument. The thermocouple head has a wiring structure, and the temperature probe is relatively long, making it prone to bending due to improper use.

[0003] In a double-tube protected thermocouple with application number CN201920196944.9, "the device is based on the existing thermocouple structure and is equipped with a protective tube and a drive assembly. The protective tube is sleeved on the outside of the sheath to protect the sheath and prevent the sheath from being deformed by external forces. In addition, the bottom of the protective tube is provided with multiple inclined elastic baffles. The elastic baffles are used to protect the measuring end of the thermocouple sheath, and the elastic baffles are spaced apart from each other so that the measurement accuracy of the thermocouple will not be affected when measuring the temperature of the fluid."

[0004] During the use of thermocouples, since the slender temperature probe structure is the main temperature sensing component, unexpected situations during the transportation of thermocouples, such as collisions or drops, can cause the probe of the temperature sensing component to bend, and the internal circuitry to be damaged by compression, thus causing the temperature probe to fail to measure temperature normally.

[0005] Therefore, a dual-tube protected thermocouple is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides a dual-tube protected thermocouple, which has the advantage of providing external protection for the thermocouple temperature probe.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a double-tube protected thermocouple, including a thermocouple junction box, a temperature probe is fixedly installed at the bottom of the thermocouple junction box, and a protection component is fixedly installed on the outside of the temperature probe;

[0008] The protection component includes a fixing block fixedly installed at the bottom of the thermocouple junction box. A protective shell is rotatably installed inside the fixing block. Side plates are fixedly installed on both sides of the outer surface of the protective shell. A bottom locking block is fitted inside the side plate and is fitted to the outer surface of the temperature probe. A first protective plate is fitted to the outer surface of the side plate and is fixedly installed with the thermocouple junction box.

[0009] Preferably, an L-shaped positioning plate is fixedly provided on the outer surface of the fixing block, and a through hole is provided at the center of the L-shaped positioning plate.

[0010] Preferably, a limiting block is fixedly provided above the outer surface of the protective shell, and a pin passes through the interior of the limiting block.

[0011] Preferably, the side plate has a vertical groove on its surface, and a slider is slidably disposed inside the vertical groove of the side plate, and the slider is fixedly disposed with the bottom locking block.

[0012] Preferably, a second protective plate is rotatably provided at the bottom end of the first protective plate, and the second protective plate is attached to one side of the side plate.

[0013] Preferably, a buckle is fixedly provided on the lower outer surface of the second guard plate, and a positioning paddle is fixedly provided on the outer surface of the bottom block.

[0014] Preferably, a magnetic suction plate is fixedly provided at the middle position of the outer surface of the second protective plate, and the first protective plate is made of iron plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model, through the setting of protective components, forms a semi-enclosed protective structure on the outside of the temperature probe. Combined with the design of the first protective plate structure, it can provide more rigorous protection for the temperature probe. During transportation, even if there is an external impact or drop, the temperature probe is directly protected to avoid bending of the temperature probe and damage to the internal components, so that the temperature probe can be used normally.

[0017] 2. With the second protective plate structure, after the protective components are opened, the second protective plate can be magnetically attached to the outer surface of the first protective plate to open the protective plate structure, thus avoiding the protective structure from obstructing the use of the temperature probe and making the operation more flexible and convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the open structure of the protective component of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the protective shell of this utility model;

[0021] Figure 4 This utility model Figure 1 A schematic diagram of the structure at point A;

[0022] Figure 5This is a schematic diagram of the installation structure of the bottom locking block of this utility model.

[0023] In the diagram: 1. Thermocouple junction box; 2. Temperature probe;

[0024] 3. Protective components; 31. Protective housing; 32. Side panel; 33. Fixing block; 34. L-shaped positioning plate; 35. Limiting block; 36. Pin; 37. Bottom locking block; 38. Slider; 39. Positioning paddle; 310. Buckle;

[0025] 4. First protective plate; 5. Second protective plate; 6. Magnetic suction plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 5 As shown, this utility model provides a double-tube protected thermocouple, including a thermocouple junction box 1, a temperature probe 2 is fixedly installed at the bottom of the thermocouple junction box 1, the temperature probes 2 are fixed together by a flange, and a protection component 3 is fixedly installed on the outside of the temperature probes 2.

[0028] The protective component 3 includes a fixing block 33 fixedly installed at the bottom of the thermocouple junction box 1. The fixing block 33 is attached to the outside of the temperature probe 2. A protective shell 31 is rotatably installed inside the fixing block 33 via a rotating shaft. Side plates 32 are fixedly installed on both sides of the outer surface of the protective shell 31, forming a three-sided protective structure to protect the temperature probe 2. A bottom locking block 37 is attached to the inside of the side plate 32. The bottom locking block 37 has a locking groove on the side near the temperature probe 2 to facilitate locking onto the outer surface of the temperature probe 2 for positioning. The bottom locking block 37 is attached to the outer surface of the temperature probe 2. A first protective plate 4 is attached to the outer surface of the side plate 32. The first protective plate 4 is fixed to one side of the temperature probe 2. After the side plate 32 is rotated to the outside of the temperature probe 2, a closed structure is formed to reduce the exposure of the temperature probe 2. The first protective plate 4 is fixedly installed with the thermocouple junction box 1 to increase the protective effect.

[0029] Specifically, an L-shaped positioning plate 34 is fixedly installed on the outer surface of the fixing block 33. A through hole is opened at the center of the L-shaped positioning plate 34. After the protective shell 31 is rotated to a parallel position, the L-shaped positioning plate 34 at the through hole position is inserted between the protective shell 31 and the limiting block 35. A limiting block 35 is fixedly installed above the outer surface of the protective shell 31. A pin 36 passes through the inside of the limiting block 35. The pin 36 is slidably connected to the limiting block 35. The pin 36 is slidably inserted into the through hole of the L-shaped positioning plate 34 to position the protective shell 31. A rubber gasket is provided on the outer surface of the end of the pin 36.

[0030] Furthermore, a vertical groove is provided on the surface of the side plate 32, and a slider 38 is slidably disposed inside the vertical groove of the side plate 32. The slider 38 is fixedly disposed with the bottom locking block 37. The bottom locking block 37 can be controlled to move within the protective area formed by the protective shell 31 and the side plate 32 by sliding the slider 38 inside the vertical groove of the side plate 32.

[0031] Furthermore, a second protective plate 5 is rotatably mounted on the bottom end of the first protective plate 4 via a pivot. The second protective plate 5 is attached to one side of the side plate 32. A buckle 310 is fixedly mounted on the lower outer surface of the second protective plate 5. A limiting groove is formed inside the buckle 310. A positioning paddle 39 is fixedly mounted on the outer surface of the bottom block 37. The positioning paddle 39 is made of elastic steel sheet, and the end of the positioning paddle 39 is hook-shaped. A magnetic suction plate 6 is fixedly mounted in the middle of the outer surface of the second protective plate 5. The first protective plate 4 is made of iron plate. After the second protective plate 5 is rotated to open, it is attracted to the surface of the first protective plate 4 by the magnetic suction plate 6 for positioning.

[0032] The thermocouple junction box 1 and the temperature probe 2 are existing technologies and will not be described in detail here. In addition, this utility model also includes a power supply, a controller and a switch, etc., which are not the main technical points of this patent and will not be described in detail here.

[0033] Working principle and effects;

[0034] When carrying the thermocouple junction box 1, the operator rotates the protective housing 31 of the protection assembly 3 closer to the temperature probe 2. The side plates 32 on both sides of the protective housing 31 can rotate and press against the surface of the first protective plate 4. The second protective plate 5, which serves as the second protective structure, is pulled open from the surface of the first protective plate 4. After the magnetic plate 6 separates, the second protective plate 5 can be rotated and attached to the surface of the side plate 32, forming a relatively tight protective structure to protect the temperature probe 2. The bottom latch 37 inside the side plate 32 is then pushed, and the bottom latch 37... The outer slider 38 moves upward inside the vertical groove of the side plate 32, moving the bottom locking block 37 into the outside of the temperature probe 2. The positioning tab 39 on the outside of the bottom locking block 37 is inserted into the limiting groove of the buckle 310 of the second protective plate 5. The positioning tab 39 deforms and enters the buckle 310 to position the bottom locking block 37 that has been raised to the outside of the temperature probe 2, thus completing the fully enclosed protection. During transportation, if there is a collision or drop, the external protective component 3 will reduce the damage and prevent the temperature probe 2 from being damaged and unusable.

[0035] When a thermocouple is needed, push the positioning paddle 39 out of the buckle 310, slide down the bottom block 37, rotate the protective shell 31 inside the fixing block 33, control the limiting block 35 on the outer surface of the protective shell 31 to rotate to the outside of the L-shaped positioning plate 34, push the pin 36 to insert the pin 36 into the inside of the L-shaped positioning plate 34, and complete the positioning of the protective shell 31. After keeping the protective shell 31 in the open state, rotate the second protective plate 5 to magnetically attach it to the outer surface of the first protective plate 4 to avoid affecting the normal use of the temperature probe 2.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double tube protection type thermocouple, comprising a thermocouple junction box (1), a temperature measuring probe (2) is fixedly arranged at the bottom end of the thermocouple junction box (1), characterized in that: A protective component (3) is fixedly installed on the outside of the temperature probe (2); The protection component (3) includes a fixing block (33) fixedly installed at the bottom of the thermocouple junction box (1). A protective shell (31) is rotatably installed inside the fixing block (33). Side plates (32) are fixedly installed on both sides of the outer surface of the protective shell (31). A bottom locking block (37) is fitted inside the side plate (32) and is fitted to the outer surface of the temperature probe (2). A first protective plate (4) is fitted to the outer surface of the side plate (32) and is fixedly installed with the thermocouple junction box (1).

2. A twin tube sheathed thermocouple as claimed in claim 1, wherein: An L-shaped positioning plate (34) is fixedly provided on the outer surface of the fixing block (33), and a through hole is provided at the center of the L-shaped positioning plate (34).

3. A twin tube sheathed thermocouple as claimed in claim 1, wherein: A limiting block (35) is fixedly provided above the outer surface of the protective shell (31), and a pin (36) passes through the inside of the limiting block (35).

4. A twin tube sheathed thermocouple as claimed in claim 1, wherein: The side plate (32) has a vertical groove on its surface. A slider (38) is slidably disposed inside the vertical groove of the side plate (32), and the slider (38) is fixedly disposed with the bottom locking block (37).

5. A twin tube sheathed thermocouple as claimed in claim 1, wherein: A second guard plate (5) is rotatably provided at the bottom end of the first guard plate (4), and the second guard plate (5) is attached to one side of the side plate (32).

6. A twin tube sheathed thermocouple as claimed in claim 5, wherein: A buckle (310) is fixedly provided on the lower outer surface of the second guard plate (5), and a positioning paddle (39) is fixedly provided on the outer surface of the bottom block (37).

7. A dual-tube protected thermocouple according to claim 5, characterized in that: A magnetic suction plate (6) is fixedly installed at the middle position of the outer surface of the second guard plate (5), and the first guard plate (4) is made of iron plate.

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