Isolation temperature sensor and temperature measuring device

Abstract

The utility model discloses an isolation temperature sensor and a temperature measuring device. The isolation temperature sensor comprises a temperature sensor, a heat conduction lining and an isolation sleeve. A temperature probe of the temperature sensor is sleeved with a heat conduction lining; the heat conduction lining is sleeved with an isolation sleeve, the isolation sleeve is connected to the temperature sensor, and the isolation sleeve is used for isolating to-be-measured liquid in the measured pipeline from the temperature probe when the temperature probe is inserted into the measured pipeline. According to the embodiment of the utility model, the heat conduction bushing is sleeved on the temperature probe, and then the temperature sensor is connected on the isolation sleeve, so that the heat conduction bushing not only uniformly conducts heat so that the temperature measurement of the temperature probe is more accurate, but also prevents the temperature probe from rubbing the outer wall to generate scratches when the temperature probe is directly screwed into the isolation sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, concretely relates to isolation temperature sensor and temperature measuring device. BACKGROUND

[0002] Temperature sensor is the important element of industrial field detection material temperature. The temperature sensor is directly inserted into liquid pipeline to measure the temperature of liquid, when the sensor is replaced, the liquid in the pipeline is discharged to replace the sensor, in order to solve this problem, the isolation sleeve is installed on the pipeline, and the temperature sensor is inserted into the isolation sleeve to indirectly measure the temperature of liquid.

[0003] When the above mode is adopted, because the inner surface of the isolation sleeve is rough and the roundness is not high, the temperature probe of the temperature sensor is generally cylindrical stainless steel thin-wall structure to ensure corrosion resistance and protection. Similarly, the isolation sleeve is also cylindrical stainless steel thin-wall structure. However, because the thermal conductivity of stainless steel material is much lower than that of pure copper material and the hardness is greater than that of pure copper, scratches are easily generated on the outer surface of the probe during the installation of the sensor. At the same time, under the condition that the coaxiality is not high during the installation of the probe and the isolation sleeve, the probe is deformed and damaged. It also causes the probe to not contact the inner surface of the isolation sleeve tightly after the installation is completed, which affects the heat conduction and further affects the sensitivity of the temperature sensor.

[0004] It can be seen that, due to the reasons of structural size precision, manufacturing process and material physical properties, the contact area between the temperature sensor and the isolation sleeve is small, the liquid temperature in the pipeline cannot be quickly conducted to the probe of the temperature sensor, which causes the delay of temperature measurement or the reduction of stability. INVENTION CONTENTS

[0005] The utility model provides isolation temperature sensor and temperature measuring device, aims at solving the temperature sensor in prior art in inserting liquid pipeline to measure, needs installing isolation sleeve on the pipeline after inserting the temperature sensor into the isolation sleeve to indirectly measure the temperature of liquid, because the structural size precision, manufacturing process and material physical properties cause the contact area between the temperature sensor and the isolation sleeve to be small, the liquid temperature in the pipeline cannot be quickly conducted to the probe of the temperature sensor, which causes the delay of temperature measurement or the reduction of stability.

[0006] In the first aspect, the utility model provides an isolation temperature sensor, which comprises a temperature sensor, a heat-conducting sleeve and an isolation sleeve; the temperature probe of the temperature sensor is sleeved with the heat-conducting sleeve; the heat-conducting sleeve is sleeved with the isolation sleeve, and the isolation sleeve is connected to the temperature sensor, and the isolation sleeve is used to isolate the liquid to be measured in the measured pipeline from the temperature probe when the temperature probe is inserted into the measured pipeline.

[0007] Further, an inner threaded connection structure is arranged on the inner wall of the isolation sleeve near the temperature sensor, the temperature sensor comprises a sensor body, the sensor body is sleeved on one end of the temperature probe, a threaded interface is arranged on the outer wall of the sensor body near one end of the temperature probe, and the isolation sleeve is screwed to the threaded interface through the inner threaded connection structure.

[0008] Further, a plurality of flat wave structures are arranged on the temperature probe from top to bottom near the threaded interface.

[0009] Further, an open slot is arranged on the outer wall of the heat-conducting sleeve along the length direction.

[0010] Further, the heat-conducting sleeve comprises a sleeve cylindrical structure and a heat-conducting sleeve structure, and the heat-conducting sleeve structure is located at the bottom end of the sleeve cylindrical structure and is integrally formed with the sleeve cylindrical structure.

[0011] Further, the open slot comprises a first open slot part and a second open slot part which are integrally formed, the first open slot part is arranged along the length direction of the sleeve cylindrical structure, and the second open slot part is arranged along the outer wall of the heat-conducting sleeve structure.

[0012] Further, the length of the first open slot part is equal to the length of the sleeve cylindrical structure.

[0013] Further, an outer threaded structure is arranged on the outer wall of the isolation sleeve near the sensor body and is used for screwing to the measured pipeline.

[0014] Further, the inner diameter of the isolation sleeve is greater than the maximum outer diameter of the heat-conducting sleeve, and the inner diameter of the heat-conducting sleeve is greater than the maximum outer diameter of the temperature probe.

[0015] In the second aspect, the utility model also provides a temperature measuring device, including the isolation temperature sensor of first aspect.

[0016] Compared with the prior art, the utility model provides an isolation temperature sensor and a temperature measuring device, which comprise a temperature sensor, a heat-conducting sleeve and an isolation sleeve; the heat-conducting sleeve is sleeved on the temperature probe of the temperature sensor; the heat-conducting sleeve is sleeved with the isolation sleeve, and the isolation sleeve is connected to the temperature sensor, and the isolation sleeve is used to isolate the liquid to be measured in the measured pipeline from the temperature probe when the temperature probe is inserted into the measured pipeline. In the embodiment of the utility model, the heat-conducting sleeve is sleeved on the temperature probe, and then the temperature sensor is connected to the isolation sleeve, the heat-conducting sleeve not only uniformly conducts heat to make the temperature probe more accurate, but also prevents scratches caused by friction of the outer wall when the temperature probe is directly screwed into the isolation sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 The structural diagram of the isolation temperature sensor provided by the present application is shown in the figure.

[0019] Figure 2 The explosion structural diagram of the isolation temperature sensor provided by the present application is shown in the figure.

[0020] Figure 3 The explosion structural diagram of the isolation temperature sensor provided by the present application is shown in the figure.

[0021] Figure 4 The assembly structural diagram of the isolation temperature sensor provided by the present application is shown in the figure.

[0022] Figure 5 The structural diagram of the A part in the figure is shown in the figure. Figure 4

[0023] The structural diagram of the B part in the figure is shown in the figure. Figure 6 Figure 4 The structural diagram of the B part in the figure is shown in the figure.

[0024] Figure 7 The structural diagram of the B part in the figure is shown in the figure. Figure 6

[0025] The structural diagram of the B part in the figure is shown in the figure. Figure 8 Explanation of the reference signs:

[0026] 10, temperature sensor; 11, temperature probe; 111, flat wave structure; 12, sensor body; 13, threaded interface; 20, heat conduction sleeve; 201, sleeve cylindrical structure; 202, heat conduction sleeve structure; 21, open slot; 211, first open slot part; 212, second open slot part; 30, isolation sleeve; 31, external thread structure; 40, measured pipeline.

[0027] DETAILED DESCRIPTION

[0028] ​​With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The terms of direction mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only the directions of the attached drawings. Therefore, the terms of direction are used to illustrate and understand the present application, but not to limit the present application. In addition, in the drawings, the structures similar or identical are indicated by the same reference numerals.

[0030] It should be understood that the terms "include" and "contain" as used in the present specification and the appended claims indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or sets thereof.

[0031] It should also be understood that the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms, unless the context clearly indicates otherwise.

[0032] It should be further understood that the term "and / or" as used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0033] Please also refer to Figure 1 and Figure 2 , wherein Figure 1 is a structural schematic diagram of an isolated temperature sensor provided by the present application, Figure 2 is an exploded structural schematic diagram of an isolated temperature sensor provided by the present application. As Figure 1 and Figure 2As shown, the isolation temperature sensor provided by the embodiment of the utility model includes temperature sensor 10, heat conduction bushing 20 and isolation sleeve 30, the temperature probe 11 of temperature sensor 10 is sleeved with heat conduction bushing 20, heat conduction bushing 20 is sleeved with isolation sleeve 30, and isolation sleeve 30 is connected to temperature sensor 10, and isolation sleeve 30 is used to isolate the liquid to be measured in the measured pipeline 40 from temperature probe 11 when temperature probe 11 is inserted into measured pipeline 40.

[0034] In the embodiment, also simultaneously refer to Figure 3 And Figure 4 If the measured pipeline 40 is a water pipe, for example, a sensor connecting port is arranged on the water pipe, such as a connecting port with internal threads, and the isolation sleeve 30 is connected (such as screwed) to the sensor connecting port on the water pipe when the isolation temperature sensor is inserted into the measured pipeline. Since the heat conduction bushing 20 is located in the inner cavity of the isolation sleeve 30, and the temperature probe 11 of the temperature sensor 10 is located in the inner cavity of the heat conduction bushing 20, when the isolation temperature sensor measures the temperature of the liquid to be measured (such as liquid water) in the water pipe, the liquid to be measured passes through the pipe wall of the isolation sleeve 30, the heat conduction bushing 20, the temperature probe of the temperature sensor 10 in sequence to reach the temperature sensing element inside the temperature sensor 10 to indirectly measure the temperature. If the heat conduction bushing 20 is implemented by using copper, and the pipe wall of the temperature probe on the isolation sleeve 30 and the temperature sensor 10 is made of stainless steel, since the copper material used by the heat conduction bushing 20 has excellent thermal conductivity, it can quickly improve the temperature measurement sensitivity of the temperature sensor 10. Moreover, after the temperature probe 11 is sleeved with the heat conduction bushing 20 and then integrally screwed into the inner cavity of the isolation sleeve 30, the temperature probe 11 will not scratch the inner wall of the isolation sleeve 30 due to friction.

[0035] In an embodiment, as shown in Figures 1-3 The inner wall of one end of the isolation sleeve 30 close to the temperature sensor 10 is provided with an internal thread connection structure (not shown), the temperature sensor 10 includes a sensor body 12, the sensor body 12 is sleeved with one end of the temperature probe 11, the outer wall of the sensor body 12 close to one end of the temperature probe 11 is provided with a threaded interface 13, and the isolation sleeve 30 is screwed to the threaded interface through the internal thread connection structure (not shown).

[0036] In the embodiment, the threaded interface 13 is arranged on the outer wall of the sensor body 12 near one end of the temperature probe 11, so that the temperature sensor 10 can be screwed on the isolation sleeve 30. Moreover, when the temperature sensor 10 is divided into two parts, i.e., the sensor body 12 and the temperature probe 11, and the sensor body 12 is sleeved on one end of the temperature probe 11, such as the top end of the temperature probe 11. If the temperature sensing element is arranged in the sensor body 12, the top end of the temperature probe 11 is connected with the temperature sensing element. The temperature sensor with the above structure not only can be conveniently connected and fixed on other structures, but also can effectively protect the temperature sensing element inside.

[0037] In an embodiment, as shown in Figures 1-3 , the temperature probe 11 is sequentially provided with a plurality of flat wave structures 111 from top to bottom near one end of the threaded interface 13.

[0038] In the embodiment, four flat wave structures 111 are sequentially arranged from top to bottom near one end of the threaded interface 13 on the temperature probe 11 in the specific implementation, and the four flat wave structures 111 are formed by using a wave machine. When the plurality of flat wave structures 111 are arranged on the temperature probe 11, the tangential torsion resistance of the temperature probe 11 is ensured, and the flexibility and axial elasticity of the temperature probe 11 are enhanced. Even if the size matching problem of the material processing of the heat conduction sleeve 20 occurs (i.e., the temperature probe 11 and the heat conduction sleeve 20 have low coaxiality and low concentricity), the above matching error can be smoothed through the flexibility and axial elasticity of the temperature probe 11, so that the heat conduction sleeve 20 can be quickly sleeved on the temperature probe 11, and the temperature probe 11 and the heat conduction sleeve 20 can be closely fitted to enhance heat conduction while preventing the temperature probe 11 from being damaged by axial over-stress deformation.

[0039] In an embodiment, as shown in Figure 2 and Figure 3 , the outer wall of the heat conduction sleeve 20 is provided with an open slot 21 along the length direction.

[0040] In the embodiment, if the open slot 21 is not arranged on the outer wall of the heat conduction sleeve 20, the air in the inner cavity of the heat conduction sleeve 20 will be gradually compressed to form high pressure, and the compressed air cannot be discharged in time, which not only damages the temperature probe 11, but also affects the heat conduction effect of the heat conduction sleeve 20. When the open slot 21 is arranged on the outer wall of the heat conduction sleeve 20 along the length direction, during the sleeving process of the heat conduction sleeve 20 on the temperature probe 11 (the volume change process of the cavity corresponding to the end of the temperature probe 11 during the installation process can be referred to Figure 7 , and the state that the temperature probe 11 is completely installed into the heat conduction sleeve 20 can be referred to Figure 4 and Figure 6), the compressed air in the heat-conducting sleeve 20 can be discharged from the open slot 21, which not only effectively balances the internal cavity air pressure of the heat-conducting sleeve 20 during the sleeving of the temperature probe 11, but also ensures the uniform heat-conducting effect of the heat-conducting sleeve 20.

[0041] In an embodiment, as shown in Figure 1 、 Figure 2 and Figure 8 , the heat-conducting sleeve 20 comprises a sleeve cylindrical structure 201 and a heat-conducting sleeve structure 202, and the heat-conducting sleeve structure 202 is located at the bottom end of the sleeve cylindrical structure 201 and is integrally formed with the sleeve cylindrical structure 201.

[0042] In the embodiment, the heat-conducting sleeve 20 can be implemented by integrally forming the sleeve cylindrical structure 201 and the heat-conducting sleeve structure 202 (similar to a hemispherical structure) during implementation. When the heat-conducting sleeve 20 is inserted into the inner cavity of the isolation sleeve 30, the heat-conducting sleeve structure 202 enters the inner cavity of the isolation sleeve 30 first. The relatively smooth and hemispherical heat-conducting sleeve structure 202 makes the insertion process less frictional and more convenient for inserting the heat-conducting sleeve 20 into the inner cavity of the isolation sleeve 30.

[0043] In an embodiment, as shown in Figure 1 、 Figure 2 and Figure 8 , the open slot 21 comprises a first open slot portion 211 and a second open slot portion 212, and the first open slot portion 211 is arranged along the length direction of the sleeve cylindrical structure 201, and the second open slot portion 212 is arranged along the outer wall of the heat-conducting sleeve structure 202.

[0044] In the embodiment, the open slot 21 is specifically arranged to comprise the first open slot portion 211 and the second open slot portion 212, so that during the installation of the heat-conducting sleeve 20 on the temperature probe 11, the air in the inner cavity of the heat-conducting sleeve 20 is always discharged through the first open slot portion 211 or the second open slot portion 212 and cannot form compressed air, effectively balancing the internal cavity air pressure of the heat-conducting sleeve 20 during the sleeving of the temperature probe 11.

[0045] In an embodiment, as shown in Figure 1 、 Figure 2 and Figure 8 , the length of the first open slot portion 211 is equal to the length of the sleeve cylindrical structure 201, and the length of the second open slot portion 212 is greater than 0.

[0046] In the embodiment, in order to realize the heat conduction sleeve 20 has better exhaust effect, the length of the first open slot part 211 can be equal to the length of the sleeve cylindrical structure 201, and the longitudinal axis of the first open slot part 211 is parallel to the longitudinal axis of the sleeve cylindrical structure 201. Moreover, only need to ensure that the heat conduction sleeve structure 202 is located on the upper end with the open structure for exhaust, that is, when the length of the second open slot part 212 is greater than 0, the above-mentioned exhaust effect can be realized.

[0047] In an embodiment, as shown in Figure 2 and Figure 3 The isolation sleeve 30 is provided with an external thread structure 31 on the outer wall of one end close to the sensor body 12 and is screwed to the measured pipeline 40.

[0048] In the embodiment, when the isolation sleeve 30 is sleeved on the temperature sensor 10, it is screwed to the threaded interface 13 through the internal thread connection structure. Then, if the temperature sensor 10 needs to be replaced, it can be directly rotated and unscrewed from the isolation sleeve 30, without stopping the running state of the equipment to which the measured pipeline 40 belongs, and without draining the liquid in the pipeline of the measured pipeline 40. When the isolation temperature sensor is needed to measure the temperature of the liquid to be measured in the measured pipeline, the isolation sleeve 30 can be inserted into the measured pipeline and screwed to the measured pipeline 40 through the external thread structure 31.

[0049] In an embodiment, as shown in Figure 1 and Figure 2 The inner diameter of the isolation sleeve 30 is greater than the maximum outer diameter of the heat conduction sleeve 20, and the inner diameter of the heat conduction sleeve 20 is greater than the maximum outer diameter of the temperature probe 11.

[0050] In the embodiment, when the conditions that the inner diameter of the isolation sleeve 30 is greater than the maximum outer diameter of the heat conduction sleeve 20, and the inner diameter of the heat conduction sleeve 20 is greater than the maximum outer diameter of the temperature probe 11 are met, not only the assembly of the three is facilitated, but also scratches caused by large friction between them during the assembly process can be effectively avoided. For example, when a plurality of flat wave structures 111 are sequentially arranged on the temperature probe 11 from top to bottom at one end close to the threaded interface 13, because the outer diameter of the flat wave structure 111 is greater than the outer diameter of other parts of the temperature probe 11, the inner diameter of the heat conduction sleeve 20 needs to be greater than the plurality of flat wave structures 111 at this time.

[0051] It can be seen that the isolation temperature sensor in the embodiment of the utility model realizes the heat conduction sleeve is sleeved on the temperature probe, and then the temperature sensor is connected to the isolation sleeve. The heat conduction sleeve not only uniformly conducts heat to make the temperature probe measure temperature more accurately, but also prevents scratches caused by friction of the outer wall when the temperature probe is directly screwed into the isolation sleeve.

[0052] The utility model further provides a temperature measuring device, including the isolated temperature sensor of preceding embodiment.

[0053] In the embodiment, the temperature measuring device in the utility model embodiment comprises an isolated temperature sensor, and can further comprise a processor and a communication module, etc., can send the temperature parameter measured by the isolated temperature sensor to a cloud server by the communication module (such as 5G communication module, NB-IoT communication module, etc.) after the temperature parameter is handled by the processor to obtain a processing result. Wherein, the isolated temperature sensor can refer to the above embodiment, and since the temperature measuring device comprises the technical scheme of all embodiments of the isolated temperature sensor, therefore, the temperature measuring device has all the beneficial effects brought by the technical scheme of the above embodiment, which will not be described in detail here.

[0054] The utility model provides an isolated temperature sensor and temperature measuring device, including temperature sensor, heat conducting bush and isolation sleeve, temperature sensor one end's temperature probe is connected with heat conducting bush, heat conducting bush is connected with isolation sleeve, and isolation sleeve is connected on temperature sensor, and isolation sleeve is used for isolating the liquid to be measured in measured pipeline and temperature probe when temperature probe is inserted in measured pipeline. The embodiment of the utility model discloses that heat conducting bush is connected with temperature probe, and then temperature sensor is connected with isolation sleeve, heat conducting bush not only evenly conducts heat and makes temperature probe more accurate, but also prevents temperature probe from scratching the outer wall when rotating into isolation sleeve.

[0055] The above is only the specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements in the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of claims.

Claims

1. An isolated temperature sensor, characterized by, The temperature sensor, the heat-conducting bushing and the isolation sleeve are connected in sequence, the temperature probe of the temperature sensor is sleeved with the heat-conducting bushing, the heat-conducting bushing is sleeved with the isolation sleeve, and the isolation sleeve is connected to the temperature sensor, and the isolation sleeve is used for isolating the liquid to be measured in the pipeline from the temperature probe when the temperature probe is inserted into the pipeline.

2. The isolated temperature sensor of claim 1, wherein, An inner thread connection structure is arranged on the inner wall of one end of the isolation sleeve close to the temperature sensor, the temperature sensor comprises a sensor body, the sensor body is sleeved with one end of the temperature probe, a threaded interface is arranged on the outer wall of the sensor body close to one end of the temperature probe, and the isolation sleeve is screwed to the threaded interface through the inner thread connection structure.

3. The isolated temperature sensor of claim 2, wherein, A plurality of flat wave structures are arranged on the temperature probe in sequence from top to bottom at one end close to the threaded interface.

4. The isolated temperature sensor of claim 1, wherein, An open slot is arranged on the outer wall of the heat-conducting bushing along the length direction.

5. The isolated temperature sensor of claim 4, wherein, The heat-conducting bushing comprises a bushing cylindrical structure and a heat-conducting sleeve structure, the heat-conducting sleeve structure is located at the bottom end of the bushing cylindrical structure and is integrally formed with the bushing cylindrical structure.

6. The isolated temperature sensor of claim 5, wherein, The open slot comprises an integrally formed first open slot part and a second open slot part, the first open slot part is arranged along the length direction of the bushing cylindrical structure, and the second open slot part is arranged along the outer wall of the heat-conducting sleeve structure.

7. The isolated temperature sensor of claim 6, wherein, The length of the first open slot part is equal to the length of the bushing cylindrical structure.

8. The isolated temperature sensor of claim 2, wherein, An outer thread structure is arranged on the outer wall of one end of the isolation sleeve close to the sensor body and is used for screwing to the pipeline.

9. The isolated temperature sensor of claim 1, wherein, The inner diameter of the isolation sleeve is greater than the maximum outer diameter of the heat-conducting bushing, and the inner diameter of the heat-conducting bushing is greater than the maximum outer diameter of the temperature probe.

10. A temperature measuring device, characterized by The isolation temperature sensor comprises the isolation temperature sensor according to any one of claims 1-9. The temperature sensor, the heat-conducting bushing and the isolation sleeve are connected in sequence, the temperature probe of the temperature sensor is sleeved with the heat-conducting bushing, the heat-conducting bushing is sleeved with the isolation sleeve, and the isolation sleeve is connected to the temperature sensor, and the isolation sleeve is used for isolating the liquid to be measured in the pipeline from the temperature probe when the temperature probe is inserted into the pipeline.

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