Displacement telescopic temperature measuring device for vacuum furnace

Abstract

The utility model provides a displaceable telescopic temperature measuring device for a vacuum furnace, and belongs to the technical field of vacuum thermotechnical temperature measurement. The problem that a temperature measuring device in an existing vacuum furnace is damaged when the temperature in the furnace is high due to the fact that the temperature measuring device cannot stretch out and draw back is solved. Comprising a supporting frame fixed to the outer wall of a furnace body of the vacuum furnace, a sliding assembly is fixed to the supporting frame and connected with one end of a temperature measuring assembly through a connecting plate, the temperature measuring assembly is in sealed connection with the furnace body through a dynamic sealing structure, and the temperature measuring end of the temperature measuring assembly extends into the vacuum furnace; the device can be used for withdrawing the thermal resistor or the thermocouple backwards out of the high-temperature area of the furnace pipe in the technical process of vacuum thermal equipment, so that the thermal resistor or the thermocouple is protected from being damaged due to high temperature. And meanwhile, the temperature of different positions in the vacuum furnace can be measured by using a thermal resistor or a thermocouple.

Description

TECHNICAL FIELD

[0001] The utility model provides a kind of telescopic temperature measuring device of displacement for vacuum furnace belongs to vacuum thermal work temperature measuring technical field. BACKGROUND

[0002] Vacuum thermal equipment is a kind of equipment for processing materials in vacuum and high temperature environment. During operation, accurate measurement and control of the temperature in the furnace is crucial to its process, so it is necessary to use various temperature measuring devices reasonably. Common temperature measuring devices include thermistors, thermocouples and infrared thermometers, etc. Among them, due to the influence of temperature sensing elements and protective tube materials, the maximum temperature measuring value of thermistors is usually 600°C, the maximum temperature measuring value of thermocouples is usually 2000°C, and the maximum temperature measuring value of non-contact temperature measuring infrared thermometer can reach 3000°C. When the temperature in the furnace is in the low temperature section, thermistors or thermocouples are used for temperature measurement; when the temperature in the furnace is in the high temperature section, infrared thermometer is used for temperature measurement. When the temperature in the furnace rises from the low temperature section to the high temperature section, in order to protect the thermistor or thermocouple from damage caused by high temperature, the thermistor or thermocouple needs to be withdrawn from the high temperature zone of the furnace tube during the process, without damaging the current vacuum condition in the furnace, so a telescopic temperature measuring device of displacement for vacuum furnace needs to be designed. In addition, this temperature measuring device can also be used to measure the temperature at different positions in the vacuum furnace using thermistors or thermocouples. SUMMARY

[0003] The utility model discloses in order to solve the problem that the temperature measuring device in existing vacuum furnace cannot be telescopic and causes the temperature measuring device to be damaged when the temperature in the furnace is high, proposes a telescopic temperature measuring device of displacement for vacuum furnace, to measure the temperature at different positions in the vacuum furnace using thermistors or thermocouples while ensuring the vacuum degree in the furnace, and the thermistor or thermocouple can be withdrawn from the high temperature zone of the furnace tube during the process.

[0004] The utility model discloses the technical scheme as follows: a telescopic temperature measuring device of displacement for vacuum furnace, including the support frame of fixed in the furnace body outer wall of vacuum furnace, support frame is fixed with sliding component, sliding component is connected with the one end of temperature measuring component through connecting plate, temperature measuring component is connected with the furnace body through dynamic sealing structure, and the temperature measuring end of temperature measuring component is inserted into vacuum furnace.

[0005] Further, the dynamic sealing structure includes a dynamic sealing flange seat, a dynamic sealing compression mother, a sealing ring, a sealing compression sleeve and a sealing flat gasket. The dynamic sealing flange seat is connected with the furnace body through bolts, and the dynamic sealing flange seat and the furnace body are sealed by the sealing ring. The sealing ring, the sealing compression sleeve and the sealing flat gasket are sequentially arranged from inside to outside between the dynamic sealing compression mother and the temperature measuring component.

[0006] Further, the temperature measuring assembly is sleeved with a thermocouple sleeve, and the temperature measuring assembly on both sides of the thermocouple sleeve is respectively sleeved with a thermocouple gasket, and the two thermocouple gaskets are fastened through nuts, and the connecting plate is arranged between the two thermocouple gaskets.

[0007] Further, a U-shaped opening for automatic movement of the temperature measuring assembly is arranged at the connecting position of the connecting plate and the temperature measuring assembly.

[0008] Further, the sliding assembly and the supporting frame are connected through bolts, and the two screw holes connected with the sliding assembly of the supporting frame are circular arc notches.

[0009] Further, the temperature measuring assembly adopts a thermal resistance or a thermocouple.

[0010] Further, the sliding assembly adopts a pneumatic cylinder or a sliding table module.

[0011] The utility model has the beneficial effects that relative to the prior art:

[0012] 1. The thermal resistance or the thermocouple is ensured to realize telescopic displacement under the condition of maintaining the vacuum state in the furnace through dynamic sealing design;

[0013] 2. The connecting position of the thermal resistance or the thermocouple and the pneumatic cylinder or the sliding table module can be freely slid, and the displacement direction of the pneumatic cylinder or the sliding table module can be debugged to be consistent with the axis direction of the thermal resistance or the thermocouple, so that the bending or damage of the thermal resistance or the thermocouple during telescopic displacement is avoided;

[0014] 3. The thermal resistance or the thermocouple can be withdrawn from the high-temperature area of the furnace tube in the process of the vacuum thermal equipment, so that the thermal resistance or the thermocouple is protected from damage caused by high temperature. The temperature measuring device can also be used to measure the temperature at different positions in the vacuum furnace using the thermal resistance or the thermocouple;

[0015] 4. The utility model has simple and reliable structure and is convenient to use. DRAWINGS

[0016] The utility model will be further described below in combination with the drawings:

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the sectional view of the dynamic sealing structure in the utility model;

[0019] Figure 3 It is the local view of the connecting position of the temperature measuring assembly and the connecting plate;

[0020] Figure 4 It is the local view of the connecting position of the temperature measuring assembly and the connecting plate;

[0021] In the figure: 1 is the dynamic sealing flange seat, 2 is the dynamic sealing pressure nut, 3 is the temperature measuring component, 4 is the connecting plate, 5 is the sliding component, 6 is the support frame, 7 is the furnace body, 8 is the sealing ring, 9 is the sealing pressure sleeve, 10 is the sealing flat gasket, 11 is the nut, 12 is the thermocouple gasket, and 13 is the thermocouple sleeve. Detailed Implementation

[0022] like Figures 1 to 4 As shown, this utility model provides a repositionable telescopic temperature measuring device for a vacuum furnace, including a support frame 6 fixed on the outer wall of the furnace body 7. In this specific embodiment, the support frame 6 is connected to the furnace body 7 by bolts; a sliding component 5 is connected to the support frame 6 by bolts, and the sliding component 5 is connected to the temperature measuring component 3 through a connecting plate 4. The temperature measuring component 3 is connected to the furnace body 7 through a dynamic sealing structure, and one end of the temperature measuring component 3 is located inside the furnace body 7.

[0023] like Figure 2 As shown, the dynamic sealing structure includes a dynamic sealing flange seat 1, a dynamic sealing nut 2, a sealing ring 8, a sealing sleeve 9, and a sealing gasket 10. The dynamic sealing flange seat 1 is connected to the furnace body 7 by bolts, and the two are sealed by a vacuum sealing ring 8. The dynamic sealing structure allows the temperature measuring component 3 to rotate or move while maintaining a vacuum inside the furnace.

[0024] like Figure 3 As shown, the connecting plate 4 is an L-shaped plate with a U-shaped opening in the middle of its vertical section. The horizontal plate of the connecting plate 4 is connected to the sliding assembly 5 by bolts. A thermocouple sleeve 13 is fitted onto the temperature measuring assembly 3, and thermocouple gaskets 12 are fitted onto the temperature measuring assembly 3 on both sides of the thermocouple sleeve 13. The outer sides of the two thermocouple gaskets 12 are locked with nuts 11. The vertical plate of the connecting plate 4 is positioned between the two thermocouple gaskets 12, and the thermocouple gaskets 12 are located on both sides of the U-shaped opening. Because a large U-shaped opening is provided at the connection between the connecting plate 4 and the temperature measuring assembly 3, the temperature measuring assembly 3 can move freely relative to the connecting plate 4, thereby preventing the sliding assembly 5 from bending or damaging the temperature measuring assembly 3 when it moves along a straight line.

[0025] like Figure 4 As shown, the sliding component 5 and the support frame 6 are connected by bolts. The two screw holes connecting the support frame 6 and the sliding component 5 are arc-shaped slots. The arc-shaped slots allow the sliding component 5 to move at a certain angle relative to the support frame 6, which makes it easy to adjust the displacement direction of the sliding component 5 to be consistent with the axial direction of the temperature measuring component 3, thereby avoiding bending or damage to the temperature measuring component 3 during telescopic displacement.

[0026] In this embodiment, the temperature measuring component 3 can be a resistance temperature detector (RTD) or a thermocouple, and the sliding component 5 can be a cylinder or a slide module.

[0027] The working principle of this utility model is as follows:

[0028] By screwing the dynamic sealing compression sleeve 2 to drive the sealing compression sleeve 9 and the sealing flat gasket 10 to compress the sealing ring 8, the sealing ring 8 and the temperature measuring assembly 3 form effective sealing, so that the temperature measuring assembly 3 can rotate or move without damaging the vacuum degree in the furnace; the connection between the temperature measuring assembly 3 and the sliding assembly 5 can be freely slid, and the displacement direction of the sliding assembly 5 can be adjusted to be consistent with the axial direction of the temperature measuring assembly 3, so that the bending or damage of the thermistor or thermocouple during the telescopic displacement is avoided.

[0029] The utility model discloses simple and reliable structure, convenient to use can be used to in the process of vacuum thermal equipment and withdraw the thermistor or thermocouple to the back furnace tube high temperature area, protect the thermistor or thermocouple and do not cause damage because of high temperature. Meanwhile can also be used to realize the use thermistor or thermocouple measures the temperature of different positions in vacuum furnace.

[0030] The utility model discloses simple and reliable structure, convenient to use can be used to in the process of vacuum thermal equipment and withdraw the thermistor or thermocouple to the back furnace tube high temperature area, protect the thermistor or thermocouple and do not cause damage because of high temperature. Meanwhile can also be used to realize the use thermistor or thermocouple measures the temperature of different positions in vacuum furnace.

[0031] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A retractable temperature measuring device for a vacuum furnace, characterized in that: Includes a support frame (6) fixed to the outer wall of the furnace body (7) of the vacuum furnace, a sliding component (5) fixed on the support frame (6), the sliding component (5) is connected to one end of the temperature measuring component (3) through the connecting plate (4), the temperature measuring component (3) is sealed to the furnace body (7) through a dynamic sealing structure, and the temperature measuring end of the temperature measuring component (3) is extended into the vacuum furnace.

2. The retractable temperature measuring device for a vacuum furnace according to claim 1, characterized in that: The dynamic sealing structure includes a dynamic sealing flange seat (1), a dynamic sealing nut (2), a sealing ring (8), a sealing sleeve (9), and a sealing gasket (10). The dynamic sealing flange seat (1) is connected to the furnace body (7) by bolts. The dynamic sealing flange seat (1) and the furnace body (7) are sealed by the sealing ring (8). The dynamic sealing nut (2) and the temperature measuring component (3) are provided with a sealing ring (8), a sealing sleeve (9), and a sealing gasket (10) from the inside to the outside.

3. The retractable temperature measuring device for a vacuum furnace according to claim 1, characterized in that: The temperature measuring component (3) is fitted with a thermocouple sleeve (13), and thermocouple gaskets (12) are fitted on the temperature measuring components (3) on both sides of the thermocouple sleeve (13). The two thermocouple gaskets (12) are fastened by nuts (11), and the connecting plate (4) is placed between the two thermocouple gaskets (12).

4. The retractable temperature measuring device for a vacuum furnace according to claim 3, characterized in that: The connection between the connecting plate (4) and the temperature measuring component (3) is provided with a U-shaped opening to facilitate the automatic movement of the temperature measuring component (3).

5. The retractable temperature measuring device for a vacuum furnace according to claim 1, characterized in that: The sliding assembly (5) and the support frame (6) are connected by bolts. The two screw holes connecting the support frame (6) and the sliding assembly (5) are arc-shaped slots.

6. A retractable temperature measuring device for a vacuum furnace according to any one of claims 1-5, characterized in that: The temperature measuring component (3) uses a resistance temperature detector (RTD) or a thermocouple.

7. A repositionable telescopic temperature measuring device for a vacuum furnace according to any one of claims 1-5, characterized in that: The sliding assembly (5) uses a cylinder or a slide module.

Images