Inflatable atmosphere furnace with window

Abstract

The utility model relates to the field of material testing, and discloses an inflatable atmosphere furnace with a window, which comprises a furnace body, an upper furnace cover is arranged at the top end of the furnace body, a corrugated pipe flange is detachably mounted at the top end of the upper furnace cover through an upper corrugated pipe flange screw, an upper corrugated pipe sealing ring is arranged between the corrugated pipe flange and the upper furnace cover, and a lower corrugated pipe sealing ring is arranged between the upper corrugated pipe flange and the lower furnace cover. And the top end of the corrugated pipe flange is fixedly connected with an upper corrugated pipe. According to the utility model, the gas charging system is matched with the vacuum quick-screwing hose joint, so that vacuumizing can be performed firstly, then inert gas is charged, the pressure is accurately controlled by utilizing the electric contact pressure gauge and the electromagnetic valve, the gas is uniformly distributed by matching with the vacuum flange pipe tee joint, a stable inert gas environment is created for a sample, and special test requirements are met; researchers can conveniently and directly observe the change condition of the sample in the furnace in the test process, the test dynamic state can be mastered in time, and convenience is provided for research and analysis.

Description

TECHNICAL FIELD

[0001] The utility model relates to material test field especially, it relates to a take a window inflatable atmospheric furnace. BACKGROUND

[0002] In many industry fields such as mechanical metallurgy and automobile manufacturing, the mechanical property of material under high temperature environment is often tested to evaluate the reliability and stability of material in practical application, and high temperature creep acceleration test is an important testing method, the test simulates the working state of material under constant temperature and load for a long time, accelerates the plastic deformation process, and obtains key performance data, which needs to use equipment that can provide specific environment, and atmospheric furnace plays a key role.

[0003] The traditional test high temperature atmospheric furnace can only meet the basic demand of heating sample, and cannot create inert gas environment for test, however, part of material will react with oxygen and other components in air under high temperature, which influences the accuracy and reliability of test result, so the inert gas environment is very important for the mechanical test of this kind of material, and a window inflatable atmospheric furnace is provided to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortage, the utility model provides a window inflatable atmospheric furnace, which aims at improving the problem that the traditional technology cannot create inert gas environment.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of with window inflatable atmospheric furnace, including furnace body, the top of the furnace body is provided with upper furnace cover, the top of the upper furnace cover is detachably installed with corrugated pipe flange by upper corrugated pipe flange screw, upper corrugated pipe sealing ring is arranged between the corrugated pipe flange and upper furnace cover, the top of the corrugated pipe flange is fixedly connected with upper corrugated pipe, the top of the upper corrugated pipe is detachably installed with upper connector by super nut, the inner wall of the furnace body is provided with heat insulation felt, the inner wall of the furnace body is provided with heat source, the outer wall of the furnace body is provided with observation mechanism, the bottom of the furnace body is provided with lower furnace cover, the bottom of the lower furnace cover is detachably installed with lower corrugated pipe sealing flange by lower corrugated pipe flange screw, lower corrugated pipe sealing ring is arranged between the lower corrugated pipe sealing flange and lower furnace cover, the lower corrugated pipe sealing flange is fixedly connected with positioning rod, the outer wall of the positioning rod is threadedly connected with positioning sleeve, the bottom of the lower corrugated pipe sealing flange is detachably installed with lower corrugated pipe, the bottom of the lower corrugated pipe is detachably installed with lower connector, the outer wall of the lower corrugated pipe is fixedly connected with connector, the inner wall of the lower connector is penetrated and is provided with extensometer corrugated pipe, the end of the connector is fixedly connected with vacuum flange pipe tee, the outer wall of the vacuum flange pipe tee is detachably installed with thermocouple connector and vacuum quick twist hose connector respectively by vacuum clamp with sealing element, the outer wall of the furnace body is provided with heating assembly;

[0006] The observation mechanism includes a window housing, which is fixedly connected to the outer wall of the furnace body, and the window housing is detachably installed with a window flange cover through an inner hexagonal flat screw, and the right end of the window flange cover is fixedly connected with a window glass, and a window sealing gasket is arranged between the window flange cover and the window glass.

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

[0008] The heating assembly includes an electrode cover, the inner wall of the electrode cover is respectively provided with an electrode and an electrode plate, the electrode cover is installed on the furnace body, the electrode is installed on the electrode plate, the electrode plate is made of insulating material, the insulating material includes aluminum oxide ceramic, and an external power source is connected to the electrode to heat the furnace body.

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

[0010] The positioning rod and the positioning sleeve are connected by threads, the positioning rod is installed on the lower corrugated pipe flange, the positioning sleeve can move on the positioning rod through threads, and can be moved to the upper flange of the lower corrugated pipe, and the extension stroke of the positioning lower corrugated pipe is guaranteed, so that the lower corrugated pipe does not overextend when installing the sample.

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

[0012] The end of the upper connector and the lower connector is provided with a mounting head.

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

[0014] The extensometer bellows penetrates a lower flange of the lower bellows and is connected with an external measurement sensor to lead out a deformation of an out-of-furnace measurement sample.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the inflation system cooperates with the vacuum quick twist hose joint, inert gas is filled after vacuumizing, the pressure is accurately controlled by using the electric contact pressure gauge and the electromagnetic valve, the gas is uniformly distributed by cooperating with the vacuum flange pipe tee, the stable inert gas environment is created for the sample, the special test demand is met, the window glass is arranged, the researchers can directly observe the sample change in the furnace during the test, the test dynamic is helped to grasp in time, and the research and analysis are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A sectional view schematic diagram of the inflation type atmospheric furnace with a window is provided for the utility model.

[0018] LEGEND:

[0019] 1. upper connector; 2. super nut; 3. upper bellows; 4. upper bellows flange screw; 5. bellows flange; 6. upper bellows sealing ring; 7. upper furnace cover; 8. heat insulation felt; 9. heat source; 10. window flange cover; 11. window glass; 12. window sealing gasket; 13. lower bellows sealing flange; 14. lower furnace cover; 15. lower bellows sealing ring; 16. lower bellows flange screw; 17. positioning rod; 18. positioning sleeve; 19. lower bellows; 20. lower connector; 21. vacuum quick twist hose joint; 22. extensometer bellows; 23. vacuum flange pipe tee; 24. thermocouple joint; 25. vacuum clamp sealing piece; 26. electrode cover; 27. electrode; 28. electrode plate. DETAILED DESCRIPTION

[0020] 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.

[0021] REFERENCE Figure 1The utility model provides an embodiment: a kind of atmospheric furnace with window, including furnace body, the top of furnace body is provided with upper furnace cover 7, the top of upper furnace cover 7 is detachably installed with corrugated pipe flange 5 by upper corrugated pipe flange screw 4, corrugated pipe flange 5 can guarantee the stable connection of upper corrugated pipe 3 and upper furnace cover 7, ensure that even if there is high temperature, high pressure and gas flow etc. Complex situation in the furnace during test, upper corrugated pipe 3 can be closely combined with upper furnace cover 7, and will not appear loose or fall off, guarantee the integrity of whole atmospheric furnace structure, corrugated pipe flange 5 and upper furnace cover 7 between are provided with upper corrugated pipe sealing ring 6, upper corrugated pipe sealing ring 6 can prevent internal gas from leaking outward, maintain stable gas pressure and gas composition in furnace, ensure that test is carried out in the set vacuum or inert gas environment, avoid the change of test environment due to gas leakage, influence the accuracy of test result, the top of corrugated pipe flange 5 is fixedly connected with upper corrugated pipe 3, during test, due to temperature change, pressure fluctuation etc. Factor, each component can produce certain thermal expansion and displacement, upper corrugated pipe 3 has certain flexibility, can buffer the stress brought by these changes, prevent component damage due to stress concentration, guarantee the stability and reliability of whole atmospheric furnace structure, the top of upper corrugated pipe 3 is detachably installed with upper connector 1 by super nut 2, if external equipment is connected with upper part of atmospheric furnace, external force or movement can be transmitted to the inside of atmospheric furnace by upper connector 1, the upper end of upper corrugated pipe 3 is sleeved with mounting head, can be connected with super nut and upper connector by mounting head, and there is sealing material between upper corrugated pipe 3 and mounting head, the inner wall of furnace body is provided with heat insulation felt 8, test needs stable high temperature environment, heat insulation felt 8 can reduce heat loss, maintain high temperature state in furnace, ensure that test is carried out under the set temperature condition, improve energy utilization efficiency, avoid temperature fluctuation to influence test result due to excessive heat loss, the inner wall of furnace body is provided with heating source 9, can make heating source 9 generate heat, so that furnace body reaches specific high temperature state inside, simulate high temperature environment in actual working condition, to meet the requirement of high temperature creep performance test to small sample.

[0022] The outer wall of the furnace body is provided with an observation mechanism, the bottom end of the furnace body is provided with a lower furnace cover 14, the bottom end of the lower furnace cover 14 is detachably installed with a lower corrugated pipe sealing flange 13 through a lower corrugated pipe flange screw 16, the lower corrugated pipe sealing flange 13 can effectively prevent medium leakage and ensure the sealing of the system, a lower corrugated pipe sealing ring 15 is arranged between the lower corrugated pipe sealing flange 13 and the lower furnace cover 14, the lower corrugated pipe sealing ring 15 prevents the furnace gas from escaping outward and maintains a specific gas pressure in the furnace, the lower corrugated pipe sealing flange 13 is fixedly connected with a positioning rod 17, the outer wall of the positioning rod 17 is threadedly connected with a positioning sleeve 18, the bottom end of the lower corrugated pipe sealing flange 13 is detachably installed with a lower corrugated pipe 19, the bottom end of the lower corrugated pipe 19 is detachably installed with a lower connector 20, a mounting head is sleeved in the lower end of the lower connector 20, the mounting head can be connected with the lower connector 20, and the threads of the upper connector 1 and the lower connector 20 can be arbitrarily changed in size, equipped with different environmental equipment interfaces, the outer wall of the lower corrugated pipe 19 is fixedly connected with a connector, the connector is connected on the lower corrugated pipe 19 by welding, the inner wall of the lower connector 20 penetrates and is provided with an extensometer corrugated pipe 22, the end of the connector is fixedly connected with a vacuum flange pipe tee 23, an external gas charging device is connected with the furnace body through a vacuum quick twist hose joint 21, the vacuum flange pipe tee 23 plays a distribution role in gas transmission, reasonably distributes the input gas to the channels where the related components are located, ensures that the gas in the system is evenly distributed, and provides a stable inert gas environment for the sample, the outer wall of the vacuum flange pipe tee 23 is detachably installed with a thermocouple connector 24 and a vacuum quick twist hose joint 21 through a vacuum clamp with a sealing element 25, the temperature in the furnace is monitored in real time through the thermocouple, and the temperature signal is transmitted to the related temperature control equipment, once the temperature deviates, the control system can timely adjust the power of the heat source 9, so as to accurately maintain the constant temperature in the furnace, the vacuum quick twist hose joint 21 is a key channel for realizing the vacuumization and inert gas charging of the atmospheric furnace, and the outer wall of the furnace body is provided with a heating assembly.

[0023] The observation mechanism comprises a window housing, the window housing is fixedly connected to the outer wall of the furnace body, the window housing is installed on the furnace body by welding, the window housing is detachably installed with a window flange cover 10 through an inner hexagonal flat screw, the right end of the window flange cover 10 is fixedly connected with a window glass 11, the processing condition of the internal material can be observed through the window glass 11, and a window sealing gasket 12 is arranged between the window flange cover 10 and the window glass 11, the gas in the furnace, such as inert gas required by the test, can be effectively prevented from leaking out of the window through the window sealing gasket 12.

[0024] Referring to Figure 1The heating assembly comprises an electrode cover 26, which mainly functions to protect the electrode 27 and the electrode plate 28, and the inner wall of the electrode cover 26 is provided with the electrode 27 and the electrode plate 28, respectively, the electrode plate 28 is made of insulating material, and the electrode 27 can be electrified by an external power supply to heat the furnace body, and the electrode cover 26 is installed on the furnace body.

[0025] With reference to Figure 1 The positioning rod 17 is threadedly connected with the positioning sleeve 18, the positioning rod 17 is installed on the lower flange of the lower corrugated pipe, the positioning sleeve 18 can be moved on the positioning rod 17 through the thread, and is moved to the upper flange of the lower corrugated pipe, and the extension stroke of the positioning lower corrugated pipe 19 is ensured, so that the lower corrugated pipe 19 does not excessively elongate when the sample is installed.

[0026] The end portions of the upper connecting head 1 and the lower connecting head 20 are provided with mounting heads, the extensometer corrugated pipe 22 penetrates the lower flange of the lower corrugated pipe 19, and is connected with an external measuring sensor to lead out the deformation of the sample outside the furnace.

[0027] Working principle: first, the vacuum quick twist hose joint 21 is connected with the external inflation system, the inflation system is started, the furnace body is vacuumized for 1-2 min, and the original air and other gases in the furnace are discharged as much as possible to create a good initial environment for subsequent inert gas inflation, the inflation system is controlled by a solenoid valve, and the electric contact pressure gauge monitors the pressure in the furnace in real time, when the pressure of the electric contact pressure gauge approaches 0MPa gauge pressure, the inflation system starts to inflate the inert gas into the furnace, with the inflation of the gas, the vacuum flange pipe tee joint 23 reasonably distributes the gas input from the vacuum quick twist hose joint 21 to the channels where the relevant components are located, ensures the uniform distribution of the gas in the furnace, and creates a stable inert gas environment for the sample, when the pressure of the electric contact pressure gauge is greater than 0.01Mpa (gauge pressure), the inflation system stops inflation, and the stable gas pressure in the furnace is maintained.

[0028] At this time, the external power supply is connected, the current passes through the electrode 27 and the electrode plate 28, the electrode 27 generates heat after being electrified, and then the inside of the furnace body reaches a specific high temperature state, in this process, the thermocouple joint 24 connects the thermocouple to monitor the temperature in the furnace in real time, and transmits the temperature signal to the related temperature control equipment, once the temperature deviates, the control system will timely adjust the power of the heat source 9 to accurately maintain the constant temperature in the furnace, meet the strict requirements of the high temperature creep acceleration test on temperature stability, the insulation felt 8 is wrapped on the inner wall of the furnace body, effectively reduces the heat loss, improves the energy utilization efficiency, further guarantees the stable temperature in the furnace, and the researcher can observe the change of the sample in the furnace through the window glass 11 during the test process.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An atmospheric air furnace with a viewing window comprising a furnace body, characterised in that: The top end of the furnace body is provided with an upper furnace cover (7), the top end of the upper furnace cover (7) is detachably installed with a corrugated pipe flange (5) through an upper corrugated pipe flange screw (4), an upper corrugated pipe sealing ring (6) is arranged between the corrugated pipe flange (5) and the upper furnace cover (7), the top end of the corrugated pipe flange (5) is fixedly connected with an upper corrugated pipe (3), the top end of the upper corrugated pipe (3) is detachably installed with an upper connector (1) through a super nut (2), the inner wall of the furnace body is provided with heat preservation felt (8), the inner wall of the furnace body is provided with a heat source (9), the outer wall of the furnace body is provided with an observation mechanism, the bottom end of the furnace body is provided with a lower furnace cover (14), the bottom end of the lower furnace cover (14) is detachably installed with a lower corrugated pipe sealing flange (13) through a lower corrugated pipe flange screw (16), a lower corrugated pipe sealing ring (15) is arranged between the lower corrugated pipe sealing flange (13) and the lower furnace cover (14), the lower corrugated pipe sealing flange (13) is fixedly connected with a positioning rod (17), the outer wall of the positioning rod (17) is threadedly connected with a positioning sleeve (18), the bottom end of the lower corrugated pipe sealing flange (13) is detachably installed with a lower corrugated pipe (19), the bottom end of the lower corrugated pipe (19) is detachably installed with a lower connector (20), the outer wall of the lower corrugated pipe (19) is fixedly connected with a connector, the inner wall of the lower connector (20) penetrates and is provided with an extensometer corrugated pipe (22), the end of the connector is fixedly connected with a vacuum flange pipe tee (23), the outer wall of the vacuum flange pipe tee (23) is detachably installed with a thermocouple connector (24) and a vacuum quick twist hose connector (21) through a vacuum clamp respectively and a sealing element (25), the outer wall of the furnace body is provided with a heating assembly; The observation mechanism comprises a window shell, the window shell is fixedly connected on the outer wall of the furnace body, the window shell is detachably installed with a window flange cover (10) through an internal hexagonal flat screw, the right end of the window flange cover (10) is fixedly connected with a window glass (11), a window sealing gasket (12) is arranged between the window flange cover (10) and the window glass (11).

2. An atmospheric air furnace with a viewing window as claimed in claim 1, characterized in that: The heating assembly comprises an electrode cover (26), the inner wall of the electrode cover (26) is respectively provided with an electrode (27) and an electrode plate (28), the electrode cover (26) is installed on the furnace body, the electrode (27) is installed on the electrode plate (28), the electrode plate (28) is made of insulating material, the insulating material comprises alumina ceramic, an external power supply is powered on the electrode (27) to realize furnace body heating.

3. An atmospheric air furnace with a viewing window as claimed in claim 1, characterized in that: The The positioning rod (17) and the positioning sleeve (18) are threadedly connected, the positioning rod (17) is installed on the lower corrugated pipe flange, the positioning sleeve (18) can move on the positioning rod (17) through the thread, and can be moved to the upper flange of the lower corrugated pipe, and the extension stroke of the positioning lower corrugated pipe (19) is guaranteed, so that the lower corrugated pipe (19) does not excessively elongate when the sample is installed.

4. An atmospheric air furnace with a viewing window as claimed in claim 1, characterized in that: The end of the upper connector (1) and the lower connector (20) is provided with a mounting head.

5. An atmospheric air furnace with a viewing window as claimed in claim 1, characterized in that: The extensometer bellows (22) penetrates through the lower flange of the lower bellows (19) and is connected with the external measuring sensor to lead out the deformation of the sample outside the furnace.

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