Thermocouple verification furnace

Abstract

The utility model discloses a thermocouple verification furnace. The thermocouple verification furnace comprises a verification furnace body and a thermocouple fixer, the thermocouple fixer is detachably arranged on the verification furnace body, and the thermocouple fixer is used for fixing a thermocouple to be tested and a standard thermocouple; the thermocouple fixer comprises a sleeve and a positioning thermal insulation sleeve. The number of the sleeves is two, and the two sleeves are rotationally connected. The positioning thermal insulation sleeve is arranged on the inner wall of the sleeve, and the positioning thermal insulation sleeve positions and fixes the thermocouple to be tested and the standard thermocouple through folding extrusion. According to the utility model, through the opening and closing of the sleeve, the thermocouple to be detected and the standard thermocouple can be quickly mounted and dismounted, and meanwhile, the positioning thermal insulation sleeve is coated outside the thermocouple to be detected and the standard thermocouple, so that the heat loss of the heating cavity of the verification furnace body can be effectively reduced, and the accuracy of the verification result of the thermocouple is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of thermocouple calibrating furnace, in particular to a kind of thermocouple calibrating furnace. BACKGROUND

[0002] Thermocouple calibrating furnace is a kind of instrument and equipment for calibrating and calibrating thermocouple. Thermocouple is a kind of sensor for measuring temperature, which is composed of a loop formed by welding two different metal wires. By using thermoelectric effect, temperature change can be converted into voltage change, so as to realize the measurement of temperature. Thermocouple calibrating furnace can provide standard temperature environment for thermocouple to calibrate and calibrate accurately. The calibrating furnace is usually composed of a controlled heating element and a precise temperature control system.

[0003] In the process of thermocouple calibration, the measured thermocouple and the standard thermocouple are inserted into the heating cavity of the calibrating furnace body, and the measured thermocouple and the standard thermocouple cannot be well positioned and fixed, and the heat of the heating cavity of the calibrating furnace body is lost, resulting in certain deviation of the result of thermocouple calibration, and certain defects exist. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of thermocouple calibrating furnace to improve the accuracy of thermocouple calibrating furnace calibration result.

[0005] To solve the above technical problems, the utility model provides a kind of thermocouple calibrating furnace, including calibrating furnace body and thermocouple fixer;

[0006] The thermocouple fixer is detachably arranged on the calibrating furnace body, and the thermocouple fixer is used to fix the measured thermocouple and the standard thermocouple;

[0007] The thermocouple fixer includes sleeve and positioning heat preservation sleeve;Two sleeves are arranged, and two sleeves are rotatably connected;

[0008] The positioning heat preservation sleeve is arranged on the inner wall of the sleeve, and the positioning heat preservation sleeve is positioned and fixed to the measured thermocouple and the standard thermocouple by folding and extruding.

[0009] Further, the sleeve includes arc sleeve and positioning cover;

[0010] Two arc sleeves are formed into cylindrical shape after rotating and folding, and match with the heating cavity of the calibrating furnace body;

[0011] The positioning cover is installed on the end of the arc sleeve respectively, and the positioning hole for positioning the measured thermocouple and the standard thermocouple is arranged on the positioning cover.

[0012] Further, the positioning cover is detachably arranged at the end of the arc-shaped sleeve.

[0013] Further, the arc-shaped sleeve is provided with a mounting hole on the side wall of the end thereof, and the positioning cover is inserted into the mounting hole through a mounting column.

[0014] Further, the outer edge of the end of the arc-shaped sleeve away from the positioning cover is provided with a chamfer structure.

[0015] Further, the arc-shaped sleeve is provided with a positioning sleeve on the outer side wall of the end thereof close to the positioning cover, and the positioning sleeve is attached to the outer side wall of the heating cavity of the calibrating furnace body when the arc-shaped sleeve is inserted into the heating cavity of the calibrating furnace body.

[0016] Further, the positioning sleeve is provided with a magnetic adsorption ring on the side thereof close to the calibrating furnace body, and the magnetic adsorption ring is magnetically adsorbed and connected to the outer side wall of the calibrating furnace body.

[0017] Further, the magnetic adsorption ring is inlaid and mounted on the positioning sleeve.

[0018] Compared with the prior art, the calibrating furnace for thermocouple has at least the following beneficial effects:

[0019] The opening and closing of the sleeve can realize the quick mounting and dismounting of the to-be-tested thermocouple and the standard thermocouple, and the positioning heat preservation sleeve is wrapped outside the to-be-tested thermocouple and the standard thermocouple, so that the heat loss of the heating cavity of the calibrating furnace body is effectively reduced, and the accuracy of the thermocouple calibration result is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a whole structure schematic view of the calibrating furnace for thermocouple.

[0021] Fig. 2 It is a sleeve structure schematic view of the calibrating furnace for thermocouple.

[0022] Fig. 3 It is a positioning cover mounting structure schematic view of the calibrating furnace for thermocouple. DETAILED DESCRIPTION

[0023] The calibrating furnace for thermocouple will be described in more detail below with reference to the schematic view, in which the preferred embodiments of the calibrating furnace for thermocouple are shown, and it should be understood that the calibrating furnace for thermocouple described herein can be modified by those skilled in the art, and the advantageous effects of the calibrating furnace for thermocouple can still be achieved. Therefore, the following description should be understood as extensive knowledge for those skilled in the art, and not as a limitation on the calibrating furnace for thermocouple.

[0024] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0025] like Figs. 1 to 3 As shown, an embodiment of the present invention provides a thermocouple calibration furnace, which includes a calibration furnace body 1 and a thermocouple holder.

[0026] Specifically, the thermocouple holder is detachably mounted on the calibration furnace body 1 , and is used to fix the thermocouple to be tested and the standard thermocouple.

[0027] The thermocouple holder includes a sleeve 2 and a positioning heat-insulating sleeve 3 ; two sleeves 2 are provided, and the two sleeves 2 are rotatably connected to each other.

[0028] The positioning and heat-insulating sleeve 3 is arranged on the inner wall of the sleeve, and the positioning and heat-insulating sleeve 3 positions and fixes the thermocouple to be measured and the standard thermocouple by closing and squeezing.

[0029] In this embodiment, the thermocouple to be tested and the standard thermocouple are placed on the positioning insulation sleeve 3 in one of the sleeves 2, and then the other sleeve 2 is closed. At this time, the thermocouple to be tested and the standard thermocouple are clamped by the two positioning insulation sleeves 3, completing the positioning and fixation of the thermocouple to be tested and the standard thermocouple. Finally, the closed sleeve 2 is inserted into the heating chamber of the calibration furnace for calibration. Since the positioning insulation sleeve is covered on the outside of the thermocouple to be tested and the standard thermocouple, it can effectively reduce the heat loss in the heating chamber of the calibration furnace body 1, ensuring the accuracy of the calibration results of the thermocouple calibration furnace.

[0030] Furthermore, the sleeve 2 includes an arc-shaped sleeve 4 and a positioning cover 5;

[0031] Specifically, the two arc-shaped sleeves 4 are rotated and closed to form a cylindrical shape, and match the heating cavity of the calibration furnace body 1.

[0032] The positioning cover 5 is mounted on the end of the arc-shaped sleeve 4 . The positioning cover 5 is provided with positioning holes 6 for positioning the thermocouple to be measured and the standard thermocouple.

[0033] In this embodiment, the positioning cover 5 is detachably arranged at the end of the arc sleeve 4 , a mounting hole 7 is provided on the side wall of the end of the arc sleeve 4 , and the positioning cover 5 is inserted into the mounting hole 7 through a mounting column 8 .

[0034] Because the sizes of the outer diameters of thermocouples are different, in order to calibrate the thermocouples of different sizes, the positioning cover 5 is detachably arranged on the arc-shaped sleeve 4, different positioning covers 5 can be selected according to the sizes of the thermocouples and are arranged on the arc-shaped sleeve 4, and the application range is wider.

[0035] The inner diameter of the positioning hole 6 matches the outer diameter of the thermocouple, when the two sleeves 2 are folded, the two positioning holes 6 are spliced to form a circular hole, the outer side wall of the thermocouple can be rigidly positioned, and the thermocouple can be flexibly positioned by cooperating with the positioning heat preservation sleeve 3, so that the thermocouple can be well positioned, the thermocouple is prevented from shaking during calibration, and the accuracy of the calibration result of the thermocouple is ensured.

[0036] In order to facilitate the sleeve 2 to be inserted into the heating cavity of the calibration furnace body 1, the outer edge of the arc-shaped sleeve 4 away from the positioning cover 5 is provided with a chamfer structure.

[0037] Further, the arc-shaped sleeve 4 is provided with a positioning sleeve 9 on the outer side wall of the end close to the positioning cover 5, and when the arc-shaped sleeve 4 is inserted into the heating cavity of the calibration furnace body 1, the positioning sleeve 9 is attached to the outer side wall of the heating cavity of the calibration furnace body 1.

[0038] In the embodiment, the positioning sleeve 9 is provided with a magnetic adsorption ring 10 close to the side of the calibration furnace body 1, the magnetic adsorption ring 10 is magnetically adsorbed and connected to the outer side wall of the calibration furnace body 1, and the magnetic adsorption ring 10 is inlaid and arranged on the positioning sleeve 9.

[0039] When the sleeve 2, the measured thermocouple and the standard thermocouple are completely inserted into the heating cavity of the calibration furnace body 1, the magnetic adsorption between the magnetic adsorption ring 10 and the outer side wall of the calibration furnace body 1 can effectively ensure the stability of the thermocouple fixer, the measured thermocouple and the standard thermocouple, and ensure the smooth progress of the thermocouple calibration work.

[0040] Compared with the prior art, the utility model has at least the following beneficial effects:

[0041] The utility model discloses through the opening and closing of sleeve, can realize the quick installation and dismounting of measured thermocouple and standard thermocouple, and positioning heat preservation sleeve is covered in the outside of measured thermocouple and standard thermocouple simultaneously, can effectively reduce the heat loss of the heating cavity of calibration furnace body, guaranteeed the accuracy of thermocouple calibration result.

[0042] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the claims of the utility model and its equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. A thermocouple calibrating furnace characterized by comprising: The utility model provides a calibrating furnace body and thermocouple fixer; The thermocouple fixer is detachably arranged on the calibrating furnace body, and is used for fixing the thermocouple to be measured and the standard thermocouple; The thermocouple fixer comprises sleeves and positioning heat preservation sleeves; the sleeves are provided with two, and the two sleeves are rotationally connected; The positioning heat preservation sleeves are arranged on the inner wall of the sleeve, and the positioning heat preservation sleeves are positioned and fixed to the thermocouple to be measured and the standard thermocouple through closing and extruding.

2. The thermocouple testing furnace of claim 1, wherein The sleeve comprises arc sleeves and positioning covers; The two arc sleeves are formed into a cylindrical shape after rotating and closing, and are matched with the heating cavity of the calibrating furnace body; The positioning cover is installed at the end of the arc sleeve, and the positioning cover is provided with positioning holes for positioning the thermocouple to be measured and the standard thermocouple.

3. The thermocouple testing furnace of claim 2, wherein The positioning cover is detachably arranged at the end of the arc sleeve.

4. The thermocouple certifying furnace of claim 3 wherein, Mounting holes are arranged on the side wall of the end of the arc sleeve, and the positioning cover is inserted into the mounting holes through mounting columns.

5. The thermocouple certifying furnace of claim 2 wherein, The outer edge of the end of the arc sleeve away from the positioning cover has a chamfer structure.

6. The thermocouple testing furnace of claim 2 wherein, A positioning sleeve is arranged on the outer side wall of the end of the arc sleeve close to the positioning cover, and the positioning sleeve is attached to the outer side wall of the heating cavity of the calibrating furnace body when the arc sleeve is inserted into the heating cavity of the calibrating furnace body.

7. The thermocouple testing furnace of claim 6 wherein, An adsorbing magnetic ring is arranged on the side of the positioning sleeve close to the calibrating furnace body, and the adsorbing magnetic ring is magnetically adsorbed and connected to the outer side wall of the calibrating furnace body.

8. The thermocouple testing furnace of claim 7, wherein, The adsorbing magnetic ring is inlaid and installed on the positioning sleeve.

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