High-temperature atmosphere furnace suitable for internal inflation sample

Abstract

The utility model relates to the field of high-temperature atmosphere furnaces, and discloses a high-temperature atmosphere furnace suitable for an internal inflation sample, which comprises a furnace shell, an electrode assembly is arranged on the inner wall of an upper end seat of an electrode cover, and an electrode connecting plate is detachably mounted on the inner side of the upper end seat of the electrode cover through an electrode connecting plate screw. The outer side of the furnace shell is detachably provided with a quartz glass tube seat through a quartz support nut, the surface of the quartz glass tube seat is provided with a through hole, the inner wall of the through hole of the quartz glass tube seat is in contact with a quartz support, and the inner wall of the quartz support is detachably provided with a quartz glass tube through a quartz glass tube nut. According to the utility model, due to the ingenious design of the quartz glass tube and related components, air flow enters the quartz glass tube from the air film hole and is uniformly discharged according to a specified path, so that the influence of air flow scattering disturbance on radiation heating is effectively eliminated, the uniform heating of a sample is ensured, and the accuracy of an experiment is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high temperature atmosphere furnace field especially suitable for internal inflation sample's high temperature atmosphere furnace. BACKGROUND

[0002] High temperature atmosphere furnace is a kind of material performance test experimental equipment, and it is used to measure the creep performance and endurance strength performance of metal, non-metal and alloy materials in high temperature environment.

[0003] High temperature atmosphere furnace provides key experimental conditions for researching the performance of materials in high temperature environment and simulating actual working conditions, and it can accurately control temperature and simulate specific high temperature atmosphere environment, which is crucial for the research and product development in many fields such as material science, aerospace and energy.

[0004] However, the above-mentioned device has some shortcomings: in the high temperature performance test of materials, especially for some special samples, such as samples with complex internal structure or requiring specific inner wall environment, internal inflation is required during high temperature test, and traditional high temperature furnace cannot meet this demand, or when realizing the internal inflation function, it cannot guarantee the stability and uniformity of high temperature environment, resulting in inaccurate test results and affecting the evaluation of material performance, therefore, a high temperature atmosphere furnace suitable for internal inflation sample is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a high temperature atmosphere furnace suitable for internal inflation sample, which aims to improve the problem that the traditional high temperature furnace in the prior art cannot meet this demand or cannot guarantee the stability and uniformity of high temperature environment when realizing the internal inflation function, resulting in inaccurate test results and affecting the evaluation of material performance.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high temperature atmosphere furnace suitable for internal inflation sample, including furnace shell, the outer side wall of the furnace shell is fixedly connected with screw b, the surface of screw b is detachably installed with thermocouple guide column through thermocouple guide column fixed nut, the rear end of the furnace shell is detachably installed with electrode cover upper end seat through electrode cover screw, the inner wall of the electrode cover upper end seat is provided with electrode assembly, the inner side of the electrode cover upper end seat is detachably installed with electrode connecting plate through electrode connecting plate screw, the outer side of the furnace shell is detachably installed with quartz glass tube seat through quartz support nut, the surface of the quartz glass tube seat is provided with through hole, the inner wall of the quartz glass tube seat through hole is in contact with quartz support, the quartz support is fixedly connected to the outer side wall of the furnace shell, and the inner wall of the quartz support is detachably installed with quartz glass tube through quartz glass tube nut.

[0007] As a further description of the above technical solutions:

[0008] The inner side wall of the furnace shell is provided with a semi-exposed embedded electric heating wire assembly.

[0009] As a further description of the above technical solutions:

[0010] The surface of the furnace shell is detachably installed with a handle arm through screws a, and the bottom end of the outer wall of the handle arm is fixedly connected with a furnace handle.

[0011] As a further description of the above technical solutions:

[0012] The electrode assembly is fixedly connected to the inner side wall of the electrode connecting plate.

[0013] As a further description of the above technical solutions:

[0014] The quartz glass tube penetrates and contacts the inner side wall of the furnace shell.

[0015] As a further description of the above technical solutions:

[0016] The top end of the outer wall of the furnace shell is detachably installed with an upper furnace cover, and the bottom end of the outer wall of the furnace shell is detachably installed with a lower furnace cover.

[0017] As a further description of the above technical solutions:

[0018] The bottom end of the outer wall of the lower furnace cover is fixedly connected with a furnace plug pressing plate.

[0019] As a further description of the above technical solutions:

[0020] The surface of the furnace shell is detachably installed with a tension handle through tension handle screws.

[0021] The utility model has the following beneficial effects:

[0022] 1、In the utility model, the ingenious design of the quartz glass tube and the related components makes the airflow enter the quartz glass tube from the air film hole and uniformly discharge according to the specified path, effectively eliminates the influence of airflow scattering disturbance on radiant heating, ensures uniform heating of the sample, and further improves the accuracy of the experiment.

[0023] 2、In the utility model, the temperature control system is composed of three groups of I-level S-type thermocouples, temperature control instruments and feedback circuits, combined with the semi-exposed embedded electric heating wire assembly and the independent power controller of each heating element, can accurately adjust the temperature in the furnace, make it stably keep in the range of ±1℃ of the set value, provide a very stable high-temperature environment for the experiment, greatly improve the reliability and repeatability of the experimental results. DRAWINGS

[0024] Fig. 1 A whole plane structure schematic diagram of a high-temperature atmosphere furnace suitable for internal inflation sample is provided for the utility model.

[0025] Fig. 2 A whole sectional structure schematic diagram of a high-temperature atmosphere furnace suitable for internal inflation sample is provided for the utility model.

[0026] Fig. 3 A variable lever assembly plane structure schematic diagram of a high-temperature atmosphere furnace suitable for internal inflation sample is provided for the utility model.

[0027] Legend:

[0028] 1, upper furnace cover; 2, furnace shell; 3, handle arm; 4, screw a; 5, screw b; 6, furnace handle; 7, tension handle; 8, tension handle screw; 9, lower furnace cover; 10, furnace plug pressing plate; 11, nut; 12, electrode cover screw; 13, electrode cover upper end seat; 14, electrode assembly; 15, electrode connecting plate; 16, electrode connecting plate screw; 17, thermocouple guide column; 18, thermocouple guide column fixing nut; 19, quartz glass tube seat; 20, quartz glass tube; 21, quartz support; 22, quartz glass tube nut; 23, quartz support nut; 24, half-exposed embedded electric heating wire assembly. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Reference Figs. 1-3The utility model provides an embodiment: a kind of high-temperature atmospheric furnace suitable for internal inflation sample, including furnace shell 2, furnace shell 2 adopts double-layer high-temperature stainless steel shell, middle fills ceramic fiber heat insulating material, to reduce heat loss, the top end of furnace shell 2 outer wall can be detachably installed with upper furnace cover 1, the bottom end of furnace shell 2 outer wall can be detachably installed with lower furnace cover 9, the bottom end of lower furnace cover 9 outer wall is fixedly connected with furnace plug pressing plate 10, furnace plug pressing plate 10 adopts special rubber material of high temperature resistance, wear resistance and excellent sealing performance, tightly adhere to furnace bottom, effectively enhance the bottom tightness, prevent high-temperature heat from bottom mass loss, avoid because of uneven heat influence experimental result;While blocking foreign matter such as dust, impurity etc. in furnace body interior, ensure that experimental environment is pure, guarantee the accuracy and reliability of experimental data, the surface of furnace shell 2 is detachably installed with handle arm 3 by screw a4, the bottom end of handle arm 3 outer wall is fixedly connected with furnace handle 6, furnace shell 2 is provided with the outside lateral wall of furnace shell 2 fixedly connected with screw b5.

[0031] Referring to Fig. 2 The surface of screw b5 is detachably installed with thermocouple guide column 17 by thermocouple guide column fixed nut 18, thermocouple guide column 17 is made of high-temperature resistant, high-strength ceramic material, hollow structure in the inside, and have high-precision guide groove, its function is to provide accurate guide and positioning for thermocouple, ensure that thermocouple can accurately extend into critical temperature measuring area in furnace, real-time measurement of temperature in furnace, provide accurate temperature data for temperature control system, while installing and maintaining thermocouple, thermocouple guide column 17 can play the role of protecting thermocouple wire, avoid its damage by external force in installation process, detachable installation mode, also facilitate replacement or repair in time when thermocouple guide column 17 appears damage, aging, ensure the normal operation of temperature measurement system, the rear end of furnace shell 2 is provided with nut 11, the rear end of furnace shell 2 is detachably installed with electrode cover upper end seat 13 by electrode cover screw 12, electrode cover upper end seat 13 is made of high-temperature resistant engineering plastic with good insulation performance, design with accurate installation clamping groove and positioning hole in the inside, provide safe and reliable installation and protection space for electrode assembly 14, the inner wall of electrode cover upper end seat 13 is provided with electrode assembly 14, electrode assembly 14 is fixedly connected to the inner side wall of electrode connecting plate 15, the inner side of electrode cover upper end seat 13 is detachably installed with electrode connecting plate 15 by electrode connecting plate screw 16.

[0032] Referring to Fig. 3, the outer side of the furnace shell 2 is detachably installed with a quartz glass tube seat 19 through a quartz support nut 23, the surface of the quartz glass tube seat 19 is provided with a through hole, the inner wall of the through hole of the quartz glass tube seat 19 is in contact with a quartz support 21, the quartz support 21 is provided with a thread, is inserted into the hole of the quartz glass tube seat 19, is locked by a round nut, and is fixedly connected to the outer side wall of the furnace shell 2, the inner wall of the quartz support 21 is detachably installed with a quartz glass tube 20 through a quartz glass tube nut 22, the quartz glass tube 20 penetrates and contacts the inner side wall of the furnace shell 2, wherein one end of the quartz glass tube 20 is shaped with a sample and closely contacts the sample; the other end extends out of the furnace wall and is not sealed, a special sample placing chamber is arranged on the inner wall of the furnace cavity, and a quartz glass tube 20 mounting hole position is reserved in front of and behind the chamber for mounting the related components of the quartz glass tube 20, during the test, the airflow enters the quartz glass tube 20 from the air film hole, and is uniformly discharged according to the specified path, thereby eliminating the influence of airflow scattering disturbance on radiant heating.

[0033] Referring to Figs. 1-3 , the inner side wall of the furnace shell 2 is provided with a semi-exposed embedded electric heating wire assembly 24, the heating wire assembly adopts an iron-chromium-aluminum electric heating furnace wire, each group of heating elements is provided with an independent power controller, the surface of the furnace shell 2 is detachably installed with a tension handle 7 through a tension handle screw 8, and the furnace body is also provided with a temperature control system, the temperature control system is composed of three groups of I-level S-type thermocouples, a temperature control instrument and a feedback circuit, can monitor temperature changes in real time, and can control the power of each heating element through feedback temperature adjustment, so that the temperature in the furnace cavity is maintained within the range of ±1℃ of the set value.

[0034] Working principle: a special sample placing chamber is arranged on the inner wall of the furnace cavity of the furnace shell 2, a quartz glass tube 20 mounting hole position is reserved in front of and behind the chamber, the outer side of the furnace shell 2 is detachably installed with a quartz glass tube seat 19 through a quartz support nut 23, the quartz support 21 is provided with a thread, is inserted into the hole of the quartz glass tube seat 19, is locked by a round nut, and is fixed to the outer side wall of the furnace shell 2, the inner wall of the quartz support 21 is detachably installed with a quartz glass tube 20 through a quartz glass tube nut 22, the quartz glass tube 20 penetrates the inner side wall of the furnace shell 2, one end of the quartz glass tube 20 is shaped with a sample and closely contacts the sample, and the other end extends out of the furnace wall and is not sealed, during the test, the airflow enters the quartz glass tube 20 from the air film hole, is uniformly discharged according to the specified path, and the influence of airflow scattering disturbance on radiant heating is eliminated, thereby providing stable experimental conditions for internal gassing samples.

[0035] The heat couple guide column 17 is made of high temperature resistant and high strength ceramic material, is hollow inside and has high precision guide grooves, provides accurate guide and positioning for the heat couple, ensures that the heat couple can accurately extend into the key temperature measuring area in the furnace to measure the temperature in the furnace in real time, can protect the heat couple wire from damage by external force when the heat couple is installed and maintained, and the detachable design facilitates timely replacement or maintenance, ensures normal operation of the temperature measuring system, at the same time, the temperature control system of the high temperature atmosphere furnace is composed of three groups of I grade S type heat couples, temperature control instruments and feedback circuits, the heat couples monitor the temperature change in the furnace in real time, the temperature control instruments receive the temperature data transmitted by the heat couples, and the feedback circuits adjust and control the power of each heating element according to the temperature data, the semi-exposed embedded electric heating wire assembly 24 adopts iron-chromium-aluminum electric heating furnace wire, each group of heating elements is provided with an independent power controller, and through the adjustment of the temperature control system, the temperature in the furnace cavity can be kept within the range of ±1℃ of the set value, thereby providing a stable high temperature environment for the experiment.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A high temperature atmospheric furnace suitable for use with an internally gassed sample comprising a furnace shell (2) characterised in that: The outer side wall of the furnace shell (2) is fixedly connected with a screw b (5), the surface of the screw b (5) is detachably installed with a thermocouple guide column (17) through a thermocouple guide column fixed nut (18), the rear end of the furnace shell (2) is provided with a nut (11), the rear end of the furnace shell (2) is detachably installed with an electrode cover upper end seat (13) through an electrode cover screw (12), the inner wall of the electrode cover upper end seat (13) is provided with an electrode assembly (14), the inner side of the electrode cover upper end seat (13) is detachably installed with an electrode connecting plate (15) through an electrode connecting plate screw (16), the outer side of the furnace shell (2) is detachably installed with a quartz glass tube seat (19) through a quartz support nut (23), the surface of the quartz glass tube seat (19) is provided with a through hole, the inner wall of the through hole of the quartz glass tube seat (19) is in contact with a quartz support (21), the quartz support (21) is fixedly connected to the outer side wall of the furnace shell (2), and the inner wall of the quartz support (21) is detachably installed with a quartz glass tube (20) through a quartz glass tube nut (22).

2. A high temperature atmospheric furnace suitable for use with an internally gasified sample according to claim 1, wherein: The inner side wall of the furnace shell (2) is provided with a semi-exposed pre-embedded electric heating wire assembly (24).

3. A high temperature atmospheric furnace suitable for use with an internally gasified sample according to claim 1, wherein: The surface of the furnace shell (2) is detachably installed with a handle arm (3) through a screw a (4), and the bottom end of the outer wall of the handle arm (3) is fixedly connected with a furnace handle (6).

4. A high temperature atmospheric furnace suitable for use with an internally gasified sample according to claim 1, wherein: The electrode assembly (14) is fixedly connected to the inner side wall of the electrode connecting plate (15).

5. A high temperature atmospheric furnace suitable for use with an internally gasified sample according to claim 1, wherein: The quartz glass tube (20) penetrates and contacts the inner side wall of the furnace shell (2).

6. A high temperature atmospheric furnace suitable for use with an internally gassed sample according to claim 1, wherein: The top end of the outer wall of the furnace shell (2) is detachably installed with an upper furnace cover (1), and the bottom end of the outer wall of the furnace shell (2) is detachably installed with a lower furnace cover (9).

7. A high temperature atmospheric furnace suitable for use with an internally gasified sample according to claim 6, wherein: The bottom end of the outer wall of the lower furnace cover (9) is fixedly connected with a furnace plug pressing plate (10).

8. A high temperature atmospheric furnace suitable for use with an internally gassed sample according to claim 1, wherein: The surface of the furnace shell (2) is detachably installed with a tension handle (7) through a tension handle screw (8).

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