Temperature measuring device

Abstract

The utility model relates to a temperature measuring device, which comprises a circuit control end and a measuring end, the circuit control end comprises a sealing box body and a control circuit arranged in the sealing box body, the measuring end comprises a temperature sensor and a temperature measuring probe, the temperature sensor is arranged on the control circuit and is connected with the temperature measuring probe through a line, the measuring end further comprises a fixing part, and the fixing part is arranged on the sealing box body. The fixing part comprises a neck bush, an outer clamping hoop and a heat preservation sealing interlayer; the neck bush and the outer hoop are both of an integrated structure, the neck bush is a cylindrical alloy plate, a containing groove I protruding outwards is formed in the outer wall of the cylindrical alloy plate and extends in the length direction of the outer wall of the cylindrical alloy plate, a protrusion corresponding to the containing groove I is arranged on the outer hoop, and the heat preservation sealing layer is tightly attached to the inner wall of the containing groove I in an arch shape. And the temperature measuring probe is clamped into the heat preservation sealing interlayer.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement. Background Technology

[0002] Remote temperature measuring instruments are currently a popular temperature measurement solution. The control circuit is installed in a sealed box, and a low-power, long-life battery is integrated into the circuit. The temperature sensor probe extends out of the sealed box and is fixed to the object being measured using insulating tape, most commonly a pipe. The control circuit is equipped with a wireless transmission module, which directly sends low-power data to a network server.

[0003] Temperature sensor probes come in two types: cylindrical probes and magnetic probes, with cylindrical probes being the most common. Existing temperature measuring instruments, to reduce power consumption, have short wiring between the probe and the control circuit. Even if the probe is wrapped tightly with layers of insulation tape around the pipe, over time, the pulling force of the wiring will cause the probe to break free of the tape. Furthermore, depending on the operating environment, the high temperature and humidity of the external air combined with the high temperature of the pipe itself will accelerate the aging and failure of the insulation tape. Therefore, a non-adhesive fixing solution for the probe is needed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, a temperature measuring device is provided. The provided technical solution includes a circuit control end and a measuring end. The circuit control end includes a sealed box and a control circuit installed inside the sealed box. The measuring end includes a temperature sensor and a temperature probe. The temperature sensor is set on the control circuit and is connected to the temperature probe through a line. The measuring end also includes a fixing part, which includes an inner liner, an outer clamp, and a thermal insulation and sealing layer.

[0005] Both the inner liner and the outer clamp are integral structures. The inner liner is a cylindrical alloy plate with an outwardly protruding receiving groove I on its outer wall. The receiving groove extends along the length of the outer wall of the cylinder. The outer clamp has a protrusion corresponding to the receiving groove I. The thermal insulation sealing layer is arched and tightly attached to the inner wall of the receiving groove I. The temperature probe is inserted into the thermal insulation sealing layer.

[0006] Based on the above technical solution, a rubber pad B is also fixed on the inner wall of the thermal insulation and sealing layer, and the temperature probe is inserted into the rubber pad B.

[0007] Based on the above technical solution, a two-piece inner sleeve and outer clamp are used to replace the one-piece structure. The fixing part also includes a strip-shaped spinal plate. A strip-shaped recess is opened on both sides of the spinal plate. An inner sleeve and an outer clamp are respectively installed in each strip-shaped recess. A limiting post is used to fix the spinal plate by passing through the inner sleeve and the outer clamp from above in a detachable manner.

[0008] The bottom of the spinal plate has a receiving groove II, and the heat-insulating and sealing partition is set in the receiving groove II.

[0009] Based on the above technical solution, an extension insulation pad and a rubber pad are fixed to the inner wall of the inner liner, and the rubber pad A is connected to the extension insulation pad.

[0010] Based on the above technical solution, the spinal plate is made of a high-temperature resistant soft material.

[0011] Based on the above technical solution, the high-temperature resistant flexible material is polytetrafluoroethylene.

[0012] Based on the above technical solution, the bottom of the spinal plate is an inwardly concave arc shape.

[0013] Beneficial effects: Based on the existing tube bundle scheme, an improvement is made to form a new fixing part. The fixing part is integrated with the temperature probe, which not only provides a stable fixing effect for the temperature probe, but also isolates it from the external temperature, making the temperature measurement more accurate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the usage state of some embodiments of this utility model.

[0015] Figure 2 This is a top view of the fixing part in some embodiments of the present invention.

[0016] Figure 3 For the present utility model Figure 2 A schematic diagram of the AA cross-section.

[0017] Figure 4 For the present utility model Figure 3 A magnified view of a portion of the image.

[0018] Figure 5 This is a side view schematic diagram of some embodiments of the present invention.

[0019] Figure 6 This is a schematic diagram showing the usage state of some other embodiments of this utility model.

[0020] Figure 7 This is a front cross-sectional view of some other embodiments of the present invention.

[0021] Figure 8 For the present utility model Figure 7 A magnified view of a portion of the image.

[0022] Figure 9 This is a side view schematic diagram of some other embodiments of the present invention.

[0023] Figure 10This is a three-dimensional schematic diagram showing the usage state of some embodiments of the thermal insulation and sealing layer of this utility model.

[0024] Figure 11 This is a three-dimensional schematic diagram showing the exploded state of some other embodiments of the thermal insulation layer of this utility model.

[0025] Figure 12 For the present utility model Figure 11 A three-dimensional diagram showing the combined states. Detailed Implementation

[0026] Example 1.

[0027] This embodiment provides a complete temperature measurement scheme, including a circuit control terminal 1 (including a control circuit and a sealed housing 3) and a measurement terminal 2 (including a temperature sensor, a temperature probe 4, and other structures). The specific circuit layout and wiring connections can be referred to existing technologies.

[0028] In this embodiment, the inner bushing 5 and outer clamp 6 of the fixing part are improved from the existing tube bundle clamp structure. The tube bundle clamp includes a soft alloy tube bundle bushing, a metal clamp, and a limiting lock head 22. The tube bundle bushing and the metal clamp are connected together by a limiting screw to prevent separation. The metal clamp is also provided with a groove for the limiting screw to slide inside, allowing the metal clamp and the tube bundle bushing to move relative to each other within a certain range. Figure 1 and Figure 2 As shown, when using this embodiment, first determine the temperature measurement area on the pipeline, then fix the sealing box 3 near the pipeline; insert the temperature probe 4 horizontally from the inner liner 5 or snap it upward from the bottom of the inner liner 5 into the insulation and sealing layer 10 of the receiving groove I; unfold the inner liner 5 and the outer clamp 6, put the inner liner 5 on the pipeline, and finally lock the lock head 22 of the outer clamp 6.

[0029] In this embodiment, a fixing part is used instead of thermal insulation tape, such as Figure 3 As shown, the inner bushing 5 and outer clamp 6 of the fixing part have been improved. In order to accommodate the temperature probe 4, a receiving groove I is provided at a suitable position in the inner bushing 5. The receiving groove I not only serves to accommodate the temperature probe 4, but also to restrict the position of the temperature probe 4. Correspondingly, a protrusion 9 is provided at the corresponding position in the outer clamp 6. When the outer clamp 6 tightens the inner bushing 5, the protrusion 9 is fitted onto the receiving groove I.

[0030] In this embodiment, there is no need to use insulating tape for fixation; simply setting an insulating and sealing layer 10 within the small receiving groove I is sufficient to isolate the temperature probe 4 from the temperature. The insulating and sealing layer 10 can be pre-set within the receiving groove I, such as... Figure 10As shown, the thermal insulation and sealing layer 10 is not simply an arched structure; its outward-facing opening only has a wiring connection hole 19. During installation, the wiring of the temperature probe 4 is first passed through the wiring connection hole 19, and then the temperature probe 4 is inserted into the thermal insulation and sealing layer 10. Finally, the wire is connected to the control circuit of the circuit control terminal 1 to complete the assembly. Alternatively, the wiring connection hole 19 can be enlarged into an arched interface 20. After the wire is inserted from below the arched interface 20, an I-shaped baffle 21 is then inserted into the arched interface 20. The baffle 21 can also have a groove that matches the arched interface 20. When the baffle 21 is embedded or inserted into the arched interface 20, the groove matches the arched interface 20, forming a wiring opening similar to the wiring connection hole 19.

[0031] In this embodiment, a rubber pad B11 can also be selected. The rubber pad B11 is fixed inside the thermal insulation and sealing layer 10 to better fix the temperature probe 4 and firmly clamp it inside.

[0032] In this embodiment, in order to better isolate the influence of external temperature on the temperature probe 4, an extended insulation pad 17 is added to the inner wall of the inner liner 5. The extended insulation pad 17 extends outward from both sides of the receiving groove I, reducing the problem of external air entering the receiving groove I due to the unevenness of the outer wall of the pipe, which would lead to a decrease in temperature measurement accuracy.

[0033] In this embodiment and any other embodiment, the inner wall of the inner liner 5 may also be equipped with a rubber pad A18, referring to the prior art, to increase friction and enhance the stability and fixing effect of the inner liner 5. The rubber pad A18 may exist independently or may exist simultaneously with the extended insulation pad 17 on the inner wall of the inner liner 5, with the two remaining seamlessly connected.

[0034] In this embodiment and any other embodiment, the thermal insulation and sealing layer 10 can be made of any feasible thermal insulation material, such as ceramic fiber, and the fixing described herein can be carried out in any feasible manner, such as adhesives or threaded connectors.

[0035] Example 2.

[0036] This embodiment is based on the first embodiment, but with improvements. For example... Figures 6 to 9As shown, a two-piece structure inner liner (modified) 13 and outer clamp (modified) 14 are used to replace the traditional one-piece structure inner liner (modified) 13 and outer clamp (modified) 14. In this embodiment, the inner liner (modified) 13 and outer clamp (modified) 14 are symmetrically arranged on the left and right sides with the spinal plate 12 as the axis, and a strip-shaped recess 15 is opened on the side wall of each side of the spinal plate 12. One end of the inner liner (modified) 13 and outer clamp (modified) 14 is inserted into the strip-shaped recess 15. A limiting post 16 is inserted from above the spinal plate 12, passes through the strip-shaped recess 15, and passes through the outer clamp (modified) 14 and inner liner (modified) 13 in sequence, fixing the outer clamp (modified) 14 and inner liner (modified) 13 in the strip-shaped recess 15 to prevent them from separating. The limiting post 16 and the spinal plate 12 should be connected in a detachable manner, such as by threaded connection. The outer clamp (modified) 14 and the inner bushing (modified) 13 can slide up and down within a certain range on the limiting post 16. The fit tolerance between the outer clamp (modified) 14, the inner bushing (modified) 13 and the limiting post 16 can be appropriately increased to give the outer clamp (modified) 14 and the inner bushing (modified) 13 a certain range of swing.

[0037] The advantage of this embodiment is that, without replacing the spinal plate 12, the appropriate length of the outer clamp (modified) 14 and inner liner (modified) 13 can be disassembled and replaced according to the size of the temperature measurement pipe. Furthermore, since the temperature probe 4 is located in the receiving groove II 8 at the bottom of the spinal plate 12, and the thermal insulation sealing layer 10 is also located within the receiving groove II 8, the bottom of the spinal plate 12 or the entire spinal plate 12 can be replaced with insulation material as needed. Therefore, it is not necessary to implement insulation measures on the entire inner liner (modified) 13; insulation measures are only required on the spinal plate 12. Based on this, the spinal plate 12 can be made of a soft, high-temperature resistant material, such as silicone, but polytetrafluoroethylene (PTFE) is more preferred.

[0038] Even if the spine plate 12 is made of a soft material, there may still be situations where the bottom cannot fit completely against the pipe. Therefore, the bottom shape of the spine plate 12 can be changed to an inwardly concave arc shape to achieve the effect of fitting the pipe wall as closely as possible.

[0039] It should be noted that in this embodiment, the inner liner (modified) 13 and the outer clamp (modified) 14 are changed to a two-piece structure, but the structure of the inner liner (modified) 13 and the outer clamp (modified) 14 is still the same as that of the inner liner 5 and the outer clamp 6. It can be regarded as cutting the inner liner 5 and the outer clamp 6 in the middle to become a two-piece structure.

Claims

1. A temperature measuring device, comprising a circuit control terminal and a measuring terminal, wherein the circuit control terminal includes a sealed housing and a control circuit installed within the sealed housing, and the measuring terminal includes a temperature sensor and a temperature probe, wherein the temperature sensor is disposed on the control circuit and is connected to the temperature probe via a wiring, characterized in that, The measuring end further comprises a fixing part, which comprises an inner sleeve, an outer clamp and a heat-insulating sealing layer; The inner sleeve and the outer clamp are of an integrated structure, wherein the inner sleeve is a cylindrical alloy plate, an accommodating groove I protruding outward is formed on the outer wall of the cylinder, the accommodating groove extends along the length direction of the outer wall of the cylinder, the outer clamp is provided with a protrusion corresponding to the accommodating groove I, the heat-insulating sealing layer is in an arc shape and tightly abuts against the inner wall of the accommodating groove I, and the temperature measuring probe is clamped into the heat-insulating sealing layer.

2. The temperature measuring device according to claim 1, wherein A rubber pad B is further fixed on the inner wall of the heat-insulating sealing layer, and the temperature measuring probe is clamped into the rubber pad B.

3. The temperature measuring device according to claim 1, wherein The integrated structure is replaced by two-piece inner sleeve and outer clamp, the fixing part further comprises a strip-shaped spine plate, a strip-shaped recess is formed on each side of the spine plate, one inner sleeve and one outer clamp are respectively arranged in each strip-shaped recess, and a limiting column is used to be fixed on the inner sleeve and the outer clamp from above the spine plate in a detachable manner; An accommodating groove II is formed on the bottom of the spine plate, and the heat-insulating sealing layer is arranged in the accommodating groove II.

4. The temperature measuring device of claim 1, wherein An extension heat-insulating pad is fixed on the inner wall of the inner sleeve.

5. The temperature measuring device according to claim 3 or 4, characterized in that A rubber pad A is further fixed on the inner wall of the inner sleeve, and the rubber pad A is connected with the extension heat-insulating pad.

6. The temperature measuring device of claim 3, wherein The spine plate is made of high-temperature-resistant soft material.

7. The temperature measuring device of claim 6, wherein The high-temperature-resistant soft material is polytetrafluoroethylene.

8. The temperature measuring device according to any one of claims 3, 6, 7, wherein The bottom of the spine plate is an arc-shaped inward recess.

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