Thermocouple verification furnace and thermocouple verification equipment

Abstract

The utility model discloses a thermocouple verification furnace and thermocouple verification equipment, the thermocouple verification furnace is applied to a thermocouple, the thermocouple verification furnace comprises a host, the host is provided with a temperature control end and a verification end which are arranged oppositely, and the host is provided with a verification hole for connecting the temperature control end and the verification end; the temperature control end supporting assembly is detachably connected to the temperature control end and used for fixing the temperature equalizing block, the verification end supporting assembly comprises a second supporting frame and a fixing lantern ring connected to the second supporting frame, the second supporting frame is connected to the verification end in a sliding mode, and the fixing lantern ring is arranged on the outer side of the high-temperature cotton in a sleeving mode and can be partially inserted into the verification hole. According to the thermocouple verification device, the fixed lantern ring is arranged, so that the situation of heat loss in the verification hole can be avoided to the maximum extent, the actual temperature and the theoretical temperature are matched to the maximum extent in the verification process, and then the verification precision of the thermocouple is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a thermocouple calibration furnace and thermocouple calibration equipment. Background Art

[0002] Thermocouple calibration furnace is a testing device used to calibrate thermocouples. In the related technology, after installing the temperature equalizing block, the thermocouple to be tested needs to be bundled with the quartz tube, and after wrapping the outside with high-temperature cotton, it is placed in the detection hole of the calibration end. In actual testing, due to the different habits and methods of wrapping high-temperature cotton by different operators, the high-temperature cotton may be too loose after being placed in the detection hole, that is, there is a certain gap between the high-temperature cotton and the side wall of the detection hole, which leads to heat leakage, resulting in a deviation between the actual temperature in the detection hole and the theoretical temperature, thereby affecting the calibration accuracy. Utility Model Content

[0003] The main purpose of the utility model is to provide a thermocouple calibration furnace, which is intended to facilitate operators to fix high-temperature cotton and improve the calibration accuracy of thermocouples.

[0004] To achieve the above purpose, the thermocouple calibration furnace proposed in the utility model is applied to a thermocouple, wherein the thermocouple is fixedly connected to a quartz tube, and both ends are aligned, and the middle of the thermocouple and the quartz tube is sleeved with high-temperature cotton, and the thermocouple calibration furnace comprises:

[0005] A host having a temperature control end and a verification end arranged opposite to each other, wherein the host is provided with a verification hole connecting the temperature control end and the verification end;

[0006] A temperature control end support assembly, detachably connected to the temperature control end, the temperature control end support assembly is used to fix the temperature equalizing block; and

[0007] The testing end support assembly includes a second support frame and a fixed collar connected to the second support frame, the second support frame is slidably connected to the testing end, the fixed collar is sleeved on the outside of the high temperature cotton and can be partially inserted into the testing hole.

[0008] In an optional embodiment, the fixing ring includes a connected main body and a sealing flange arranged on the outer periphery of the main body, the main body is partially inserted into the inspection hole, and the sealing flange is attached to the outer side of the host.

[0009] In an optional embodiment, the fixing ring also includes a limit block connected to the main body, the limit block is arranged opposite to the sealing flange, the limit block is provided with avoidance holes running through the opposite sides thereof, the high temperature cotton can abut against the limit block, and the thermocouple and part of the quartz tube extend out from the avoidance holes.

[0010] In an optional embodiment, the body includes a first ring body and a second ring body connected to the second support frame, the first ring body and the second ring body are arranged opposite to each other, and the sealing flange is partially located on the first ring body and partially located on the second ring body;

[0011] The first ring body and the second ring body are enclosed to form a limiting groove, and the high temperature cotton is accommodated in the limiting groove.

[0012] In an optional embodiment, one end of the first ring body and the second ring body are respectively rotatably connected to the second support frame, and the other end is detachably connected to each other.

[0013] In an optional embodiment, the first ring body is provided with a buckle, and the second ring body is provided with a buckle hole. The first ring body can rotate relative to the second ring body, and the buckle can be buckled in the buckle hole.

[0014] In an optional embodiment, the buckle includes an elastic connecting plate and a buckling protrusion connected to each other, the elastic connecting plate is connected to the first ring body, and the buckling protrusion is hemispherical and can be elastically buckled in the buckle hole.

[0015] In an optional embodiment, the temperature control end support assembly includes a first support frame and a support ring, the first support frame is slidably connected to the temperature control end, the support ring is connected to the first support frame, and the temperature equalizing block can be inserted into the support ring.

[0016] The utility model also provides a thermocouple calibration device, comprising the thermocouple calibration furnace as described above.

[0017] In an optional embodiment, the thermocouple calibration furnace and a temperature controller are included, and the thermocouple calibration furnace is electrically connected to the temperature controller.

[0018] The technical solution of the utility model is applied to thermocouples. In specific tests, the thermocouple is fixedly connected to the quartz tube, and the two ends are aligned. The middle parts of the thermocouple and the quartz tube are sleeved with high-temperature cotton. The thermocouple calibration furnace includes a main machine, which has a temperature control end and a calibration end that are relatively arranged. The main machine is provided with a calibration hole connecting the temperature control end and the calibration end; the temperature control end support component is detachably connected to the temperature control end, the temperature control end support component is used to fix the temperature equalizing block, the calibration end support component includes a second support frame and a fixed collar connected to the second support frame, the second support frame is slidably connected to the calibration end, the fixed collar is sleeved on the outside of the high-temperature cotton, and can be partially inserted into the calibration hole.

[0019] In actual applications, after the temperature equalizing block is installed and the main unit is connected to the temperature controller, the thermocouple is aligned with the two ends of the quartz tube and fixedly connected. After the middle part is covered with high-temperature cotton, a fixed ring is covered on the outside of the high-temperature cotton, and part of the fixed ring is covered on the calibration hole. Since the cooperation between the two is relatively fixed, the gap between the high-temperature cotton and the side wall of the calibration hole can be avoided to a large extent. It is not only convenient for the operator to fix the high-temperature cotton and insert it into the calibration hole, but also because the gap between the two is small and fixed, it can also avoid the loss of heat in the calibration hole. During the calibration process, the actual temperature and the theoretical temperature are matched to the greatest extent, thereby improving the calibration accuracy of the thermocouple. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of a thermocouple calibration furnace of the utility model;

[0022] Figure 2 for Figure 1 The structural exploded view of the thermocouple calibration furnace shown;

[0023] Figure 3 for Figure 1 The schematic diagram of the structure of the thermocouple calibration furnace in another state is shown, in which the second ring body rotates relative to the first ring body and opens the limiting groove.

[0024] Description of Figure Numbers:

[0025]

[0026]

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] Reference Figures 1 to 3 The utility model provides a thermocouple calibration furnace 1.

[0032] To achieve the above purpose, the thermocouple calibration furnace 1 proposed by the utility model is applied to a thermocouple 2, wherein the thermocouple 2 is fixedly connected to a quartz tube 3, and both ends are aligned, and a high-temperature cotton 4 is sleeved in the middle of the thermocouple 2 and the quartz tube 3. The thermocouple calibration furnace 1 comprises:

[0033] The host 10 includes a housing, a control circuit board and a calibration element arranged therein. The two ends of the host 10 are respectively a temperature control end 11 and a calibration end 12. The host 10 is also provided with a calibration hole 10a connecting the temperature control end 11 and the calibration end 12. The temperature control end 11 is used to place a temperature equalizing block and a positioning ring, and the calibration end 12 is used to place a thermocouple 2, a quartz tube 3 and a high-temperature cotton 4. The lower part of the housing is provided with a first sliding connection hole and a second sliding connection hole. The first sliding connection hole is located on one side of the temperature control end 11, and the second sliding connection hole is located on one side of the calibration end 12.

[0034] The temperature control end support assembly 20 includes a first support frame 21 and a support ring 22 made of metal material. The first support frame 21 is in an "L" shape, and its lower end portion is inserted into the first sliding connection hole. Under the action of external force, the first support frame 21 can move toward or away from one side of the main unit 10, and the temperature equalizing block is connected to the support ring 22 through a positioning ring.

[0035] The test end support assembly includes a second support frame 31 and a fixing ring 32 connected to the second support frame 31.

[0036] The second support frame 31 is slidably connected to the testing end 12 , and the fixing ring 32 is sleeved on the outside of the high temperature cotton 4 and can be partially inserted into the testing hole 10 a .

[0037] In actual applications, after the temperature equalizing block (not shown) is installed and the main unit 10 is connected to the temperature controller, the thermocouple 2 and the quartz tube 3 are aligned and fixedly connected at both ends. After the high-temperature cotton 4 is sleeved in the middle, a fixing ring 32 is sleeved on the outside of the high-temperature cotton 4, and part of the fixing ring 32 is sleeved on the calibration hole 10a. Since the cooperation between the two is relatively fixed, the gap between the high-temperature cotton 4 and the side wall of the calibration hole 10a can be avoided to a large extent. It is not only convenient for the operator to fix and insert the high-temperature cotton 4 into the calibration hole 10a, but also because the gap between the two is small and fixed, it can also avoid the heat loss in the calibration hole 10a, so that during the calibration process, the actual temperature and the theoretical temperature are matched to the greatest extent, thereby improving the calibration accuracy of the thermocouple 2.

[0038] In one embodiment of the utility model, the fixed ring 32 includes a connected main body (not shown) and a sealing flange 322 arranged on the outer periphery of the main body. The sealing flange 322 and the main body are integrally formed and located in the middle of the main body. When the main body is partially inserted into the calibration hole 10a, the sealing flange 322 fits against the outside of the host 10 to seal the gap between the main body and the calibration hole 10a, thereby achieving better sealing performance and higher calibration accuracy.

[0039] Furthermore, the fixing collar 32 also includes an integrally formed body and a stopper 323, the stopper 323 being arranged opposite to the sealing flange 322, and the stopper 323 being provided with avoidance holes 323a penetrating opposite sides thereof, the avoidance holes 323a being provided for the thermocouple 2 and the quartz tube 3 to partially extend, and the high temperature cotton 4 being able to abut against the stopper 323. In the present application, by providing the stopper 323, it is possible to avoid the situation where the body is subjected to the stress of the side wall of the hole after being inserted into the calibration hole 10a, and the high temperature cotton 4 is disengaged from the other end of the fixing collar 32, so that the use performance of the thermocouple calibration furnace 1 is more stable.

[0040] Please refer to the Figure 2 and Figure 3 In order to facilitate the installation of the fixing ring 32 on the outside of the high-temperature cotton 4, in one embodiment of the present application, the main body includes a first ring body 3211 and a second ring body 3212 connected to the second support frame 31, the first ring body 3211 and the second ring body 3212 are arranged opposite to each other, the sealing flange 322 and the limit block 323 are partially located on the first ring body 3211, and partially located on the second ring body 3212, the first ring body 3211 and the second ring body 3212 are surrounded to form a limit groove 321a, and the high-temperature cotton 4 is accommodated in the limit groove 321a.

[0041] Specifically, one end of the first ring body 3211 and the second ring body 3212 are respectively rotatably connected to the second support frame 31 through a rotating shaft, and the other end is detachably connected to each other, wherein the first ring body 3211 is provided with a buckle 3213, and the second ring body 3212 is provided with a buckle hole 3212a, and under the action of an external force, the first ring body 3211 can rotate relative to the second ring body 3212. In practical applications, after the high-temperature cotton 4 is sleeved on the outside of the thermocouple 2 and the quartz tube 3, the first ring body 3211 and the second ring body 3212 rotate in a direction away from each other to open the limiting groove 321a, and then the high-temperature cotton 4 is placed in the limiting groove 321a, and the first ring body 3211 and the second ring body 3212 rotate toward each other, and the buckle 3213 is buckled in the buckle hole 3212a to close the limiting groove 321a. The present application greatly facilitates the operator to place the high-temperature cotton 4 in the limiting groove 321a by providing a rotating first ring body 3211 and a second ring body 3212.

[0042] Furthermore, the buckle 3213 includes an elastic connecting plate 3214 and a snap-fitting protrusion 3215 connected to each other. The elastic connecting plate 3214, the snap-fitting protrusion 3215 and the first ring body 3211 are integrally formed, and the snap-fitting protrusion 3215 is hemispherical. In the present application, by providing an elastic connecting plate 3214 and a hemispherical snap-fitting protrusion 3215, it is convenient for users to open or close the limit groove 321a.

[0043] The utility model also proposes a thermocouple calibration device (not shown), which includes a temperature controller (not shown) and a thermocouple calibration furnace 1. The specific structure of the thermocouple calibration device refers to the above embodiment. Since the thermocouple calibration device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the host 10 of the thermocouple calibration furnace 1 is provided with a connecting plug, and the temperature controller is electrically connected to the host 10 through a terminal connecting line, and the temperature controller is used to accurately control the temperature of the host 10.

[0044] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A thermocouple calibration furnace, applied to a thermocouple, wherein the thermocouple is fixedly connected to a quartz tube, and both ends are aligned, and the middle of the thermocouple and the quartz tube is sheathed with high-temperature cotton, characterized in that: The thermocouple calibration furnace comprises: A host having a temperature control end and a verification end arranged opposite to each other, wherein the host is provided with a verification hole connecting the temperature control end and the verification end; A temperature control end support assembly, detachably connected to the temperature control end, the temperature control end support assembly is used to fix the temperature equalizing block; and The testing end support assembly includes a second support frame and a fixed collar connected to the second support frame, the second support frame is slidably connected to the testing end, the fixed collar is sleeved on the outside of the high temperature cotton and can be partially inserted into the testing hole.

2. The thermocouple calibration furnace according to claim 1, characterized in that: The fixing collar comprises a connected main body and a sealing flange arranged on the outer periphery of the main body, the main body is partially inserted into the inspection hole, and the sealing flange is attached to the outer side of the host.

3. The thermocouple calibration furnace according to claim 2, characterized in that: The fixing ring also includes a limit block connected to the main body, the limit block is arranged opposite to the sealing flange, the limit block is provided with avoidance holes running through the opposite sides thereof, the high temperature cotton can abut against the limit block, and the thermocouple and part of the quartz tube extend out from the avoidance holes.

4. The thermocouple calibration furnace according to claim 2, characterized in that: The body comprises a first ring body and a second ring body connected to the second support frame, the first ring body and the second ring body are arranged opposite to each other, and the sealing flange is partially located on the first ring body and partially located on the second ring body; The first ring body and the second ring body are enclosed to form a limiting groove, and the high temperature cotton is accommodated in the limiting groove.

5. The thermocouple calibration furnace according to claim 4, characterized in that: One end of the first ring body and the second ring body are respectively rotatably connected to the second support frame, and the other end is detachably connected to each other.

6. The thermocouple calibration furnace according to claim 5, characterized in that: The first ring body is provided with a buckle, and the second ring body is provided with a buckle hole. The first ring body can rotate relative to the second ring body, and the buckle can be buckled in the buckle hole.

7. The thermocouple calibration furnace according to claim 6, characterized in that: The buckle comprises an elastic connecting plate and a buckling protrusion connected to each other. The elastic connecting plate is connected to the first ring body. The buckling protrusion is hemispherical and can be elastically buckled in the buckle hole.

8. The thermocouple calibration furnace according to any one of claims 1 to 6, characterized in that: The temperature control end support assembly includes a first support frame and a support ring. The first support frame is slidably connected to the temperature control end, the support ring is connected to the first support frame, and the temperature equalizing block can be inserted into the support ring.

9. A thermocouple calibration device, characterized in that: The invention comprises a thermocouple calibration furnace as claimed in any one of claims 1 to 8.

10. The thermocouple calibration device according to claim 9, characterized in that: It comprises the thermocouple calibration furnace and a temperature controller, and the thermocouple calibration furnace is electrically connected to the temperature controller.

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