Sealed canister for bearing steel carburized test specimens

Abstract

The utility model relates to sample storage device technical field especially based on bearing steel carburizing's sample sealed placing jar, including heat preservation jar body and heat preservation box, one side fixed communication of heat preservation jar body outer wall has heat preservation box, one side fixed communication of heat preservation box has heat preservation cylinder, the inboard mounting of heat preservation cylinder has high pressure nitrogen tank, and nitrogen tank connecting mechanism is installed between heat preservation jar body and high pressure nitrogen tank, nitrogen tank connecting mechanism includes connecting pipe, drying filter body and pressure reducing valve seat, one end of connecting pipe is fixedly connected with heat preservation jar body, and the other end of connecting pipe is fixedly communicated with high pressure nitrogen tank through pressure reducing valve seat, in the utility model, through setting horizontal ladder heating spare, nitrogen and heat conduction piece contact area are increased in up and down staggered, and heating efficiency is promoted, makes water bead slide, avoids the influence heating, effectively avoids low temperature nitrogen to cause tank wall dew water and makes sample rust, and the reliability of detection result is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of sample preservation devices, specifically a sealed sample placement container based on bearing steel carburization. Background Technology

[0002] In the field of bearing steel carburizing process research and performance testing, the stability of the sample storage environment directly determines the reliability of the test results. Among them, the core requirement of the sealed sample placement tank based on bearing steel carburizing is to maintain a high-purity inert atmosphere inside the tank to avoid the sample from contacting impurity gases or water vapor, which would lead to performance degradation. However, in practical applications, traditional sealed placement tanks have multiple technical defects that make it difficult to meet the requirements. Because traditional placement tanks rely solely on a single sealed structure to isolate the outside air, reactive gases such as oxygen and carbon dioxide are easily left inside the tank. These gases react chemically with alloying elements such as chromium and manganese on the sample surface to generate oxide inclusions, which will significantly change the key performance parameters of bearing steel, such as fatigue strength and hardness. This will cause subsequent test data to deviate from the true value and cannot provide an accurate basis for optimizing the carburizing process. To address the issue of atmosphere purity, existing technologies often employ a combination of high-pressure nitrogen tanks and pressure reducing valves. This involves injecting nitrogen into the tank to replace residual gases. However, in winter or in low-temperature workshops (temperature ≤10℃), the nitrogen temperature inside the high-pressure nitrogen tank can drop below 5℃. When low-temperature nitrogen enters the tank directly through the pressure reducing valve, it undergoes intense heat exchange with the tank wall, causing a sudden drop in tank wall temperature. At this point, moisture in the air easily condenses into water droplets on the tank wall. These droplets drip down the tank wall onto the sample surface, causing corrosion and damaging the original properties of the sample, thus affecting the accuracy of the test. Therefore, a sealed sample placement container based on bearing steel carburizing is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a sealed sample placement container based on bearing steel carburization, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A sealed sample placement container based on bearing steel carburization includes an insulated container body and an insulated box. One side of the outer wall of the insulated container body is fixedly connected to the insulated box, and one side of the insulated box body is fixedly connected to an insulated cylinder. A high-pressure nitrogen cylinder is installed inside the insulated cylinder. A nitrogen cylinder connection mechanism is installed between the insulated container body and the high-pressure nitrogen cylinder. The nitrogen cylinder connection mechanism includes a connecting pipe, a drying filter body, and a pressure reducing valve seat. One end of the connecting pipe is fixedly connected to the insulated container body, and the other end is fixedly connected to the high-pressure nitrogen cylinder via the pressure reducing valve seat. A drying filter body is fixedly installed on one side inside the connecting pipe, and two horizontal stepped heating elements are fixedly installed on the other side of the connecting pipe. The two horizontal stepped heating elements are staggered vertically. A collecting element is fixedly installed at one end inside the connecting pipe. Each horizontal stepped heating element includes an insulation plate. A heater is fixedly installed inside the insulation plate, and multiple linearly arranged contact elements are fixed above the insulation plate. An installation cavity and a receiving cavity are formed inside each contact element, and a heat-conducting element is embedded inside the installation cavity.

[0005] As a further optimization of this utility model, the horizontal stepped heating element includes an insulation board, which is parallel to the connecting pipe. A heater is fixed on the inner side of the insulation board, and multiple contact elements arranged linearly are fixed on the upper side of the insulation board. An installation cavity and a storage cavity are opened on the inner side of the contact elements, and a heat-conducting element is embedded on the inner side of the installation cavity.

[0006] As a further optimization of this utility model, the lower surface of the contact element is horizontal, the upper surface of the contact element is inclined, and the inclination angle of the upper surface of the contact element is 45°.

[0007] As a further optimization of this utility model, the mounting cavity is located in the middle of the inner side of the contact member, and the mounting cavity extends to the bottom of the contact member.

[0008] As a further optimization of this utility model, the following features are provided: the storage cavity is located on both sides of the mounting cavity, the inner side of the storage cavity has an arc-shaped structure, multiple storage cavities on the same side are located on the same horizontal line, and inclined grooves are provided on the top of both sides of the heat-conducting component; the lower end of the heat-conducting component is in contact with the heating end of the heater.

[0009] As a further optimization of this utility model, the collecting component includes a collecting box, with drain pipes fixedly connected to the bottom of both ends of the collecting box. The drain pipes extend to the outside of the insulated box. Connectors are fixedly connected to both sides of the upper part of the collecting box. One end of the connector is inclined, and the other end of the connector is fixedly connected to the inner side of the corresponding storage cavity.

[0010] As a further optimization of this utility model, a perforated placement plate is fixedly connected to the middle of the inner side of the heat-insulating tank, the axis of the perforated placement plate is on the same straight line as the axis of the heat-insulating tank, and a tank cover is threadedly connected to the top of the heat-insulating tank.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the horizontal stepped heating element, staggered vertically, increases the contact area between nitrogen and the heat-conducting element, improving heating efficiency. The inclined contact element guides the flow of nitrogen and causes water droplets to slide off, avoiding interference with heating. The arc-shaped collection cavity collects water droplets, while the inclined connecting element guides the water droplets into the collection box for discharge. The dryer filter body further removes water vapor impurities after the nitrogen has been initially dehydrated by heating, extending its lifespan. This effectively prevents condensation on the tank wall caused by low-temperature nitrogen, which could lead to sample corrosion and ensure the reliability of test results. Attached Figure Description

[0012] Figure 1 This is a partial cross-sectional structural diagram of the present invention. Figure 2 This is a cross-sectional structural diagram of the insulated box of this utility model; Figure 3 This is a cross-sectional structural diagram of the connecting pipe of this utility model; Figure 4 This is a schematic diagram showing the disassembled structure of the horizontal stepped heating element of this utility model; Figure 5 This is a schematic diagram of the structure of the collection component of this utility model; Figure 6 This is a schematic diagram of the overall structure of this utility model.

[0013] In the diagram: 1. Insulated container; 2. Insulated box; 3. Insulated cylinder; 30. High-pressure nitrogen cylinder; 5. Perforated placement plate; 6. Canister lid; 4. Nitrogen tank connection mechanism; 41. Connecting pipe; 42. Dryer filter body; 43. Pressure reducing valve seat; 44. Horizontal stepped heating element; 441. Insulation board; 442. Heater; 443. Contact element; 444. Mounting cavity; 445. Storage cavity; 446. Heat-conducting element; 447. Inclined groove; 45. Collection component; 451. Collection box; 452. Drain pipe; 453. Connector. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: The sample sealing container based on bearing steel carburization includes an insulated container body 1 and an insulated box 2. The insulated box 2 is fixedly connected to one side of the outer wall of the insulated container body 1, and an insulated cylinder 3 is fixedly connected to one side of the insulated box 2. A high-pressure nitrogen cylinder 30 is installed inside the insulated cylinder 3. A nitrogen cylinder connection mechanism 4 is installed between the insulated container body 1 and the high-pressure nitrogen cylinder 30. The nitrogen cylinder connection mechanism 4 includes a connecting pipe 41, a drying filter body 42, and a pressure reducing valve seat 43. One end of the connecting pipe 41 is fixedly connected to the insulated container body 1, and the other end of the connecting pipe 41 is fixedly connected to the high-pressure nitrogen cylinder 30 through the pressure reducing valve seat 43. The drying filter body 42 is fixedly installed on one side inside the connecting pipe 41, and two horizontal stepped heating elements 44 are fixedly fixed on the other side of the connecting pipe 41. The two horizontal stepped heating elements 44 are staggered vertically. A collecting element 45 is fixedly installed at one end inside the connecting pipe 41.

[0017] As a further implementation of this solution, the horizontal stepped heating element 44 includes an insulation plate 441, which is parallel to the connecting pipe 41. A heater 442 is fixed inside the insulation plate 441, and multiple linearly arranged contact elements 443 are fixed above the insulation plate 441. An installation cavity 444 and a storage cavity 445 are opened inside the contact elements 443. A heat-conducting element 446 is embedded inside the installation cavity 444. The lower surface of the contact element 443 is horizontal, and the upper surface of the contact element 443 is inclined. The inclination angle of the upper surface of the contact element 443 is 45°. To further explain, the horizontal lower surface of the contact element 443 enhances the bonding stability with the insulation plate 441, while the 45° inclined design of the upper surface guides the nitrogen gas to flow along the inclined surface, prolonging the contact time between the nitrogen gas and the contact element 443 and improving the heating efficiency. On the other hand, the inclined surface allows condensed water droplets to slide naturally into the receiving cavity 445 under the action of gravity, preventing water droplets from adhering to the surface of the contact element 443 and affecting the heating effect. As a further implementation of this solution, the mounting cavity 444 is located in the middle of the inner side of the contact member 443, and the mounting cavity 444 extends to the bottom of the contact member 443. The receiving cavity 445 is located on both sides of the mounting cavity 444, and the inner side of the receiving cavity 445 has an arc-shaped structure. Multiple receiving cavities 445 located on the same side are located on the same horizontal line. The top of both sides of the heat-conducting member 446 is provided with inclined grooves 447. The lower end of the heat-conducting member 446 is in contact with the heating end of the heater 442. To further explain, the collection cavities 445 are symmetrically distributed on both sides of the mounting cavity 444, and the arc-shaped structure is adapted to the flow of water droplets, which can efficiently collect water droplets sliding off the heat-conducting component 446. The horizontal distribution of the collection cavities 445 on the same side can ensure that the water droplets are evenly guided to the collecting component 45. The inclined groove 447 is in close contact with the heating end of the heater 442, which not only increases the thermal contact area between the heat-conducting component 446 and the heater 442 and improves the heat transfer efficiency, but also avoids the heater 442 from directly contacting the water vapor in the nitrogen, reducing the probability of the heater 442 failing due to water vapor corrosion and extending its service life. As a further implementation of this solution, the collection component 45 includes a collection box 451. Both ends of the collection box 451 are fixedly connected to the bottom of a drain pipe 452. The drain pipe 452 extends to the outside of the insulation box 2. Both sides of the upper part of the collection box 451 are fixedly connected to a connector 453. One end of the connector 453 is inclined, and the other end of the connector 453 is fixedly connected to the inside of the corresponding storage cavity 445. To further explain, the connector 453 is designed with one end tilted and the other end fixed to the storage cavity 445. The tilted structure of the connector 453 can guide the water droplets in the storage cavity 445 to flow quickly into the collection box 451 by gravity. As a further implementation of this scheme, a perforated placement plate 5 is fixedly connected to the middle of the inner side of the heat-insulating tank 1 to ensure that nitrogen gas diffuses evenly to the surrounding area of ​​the sample through the holes. The axis of the perforated placement plate 5 is on the same straight line as the axis of the heat-insulating tank 1. The top of the heat-insulating tank 1 is threadedly connected to a tank cover 6 to prevent the leakage of pure nitrogen gas inside the tank or the entry of outside air, while also making it convenient for staff to open the tank cover 6 to place or take out the sample.

[0018] Work process: Check the sealing performance and insulation layer integrity of the insulation tank 1, insulation box 2 and insulation cylinder 3 to ensure there is no damage or leakage. Unscrew the tank cover 6 and place the bearing steel carburized sample stably on the perforated placement plate 5 inside the insulation tank 1. The sample should be evenly distributed to ensure sufficient contact with nitrogen. Then tighten the tank cover 6 to achieve a seal. Confirm that the high-pressure nitrogen tank 30 is installed inside the insulation cylinder 3. Seal it with the connecting pipe 41 through the pressure reducing valve seat 43 to ensure no leakage in the nitrogen transmission path. In the nitrogen pretreatment stage, the valve of the high-pressure nitrogen tank 30 is opened. After the nitrogen is depressurized by the pressure reducing valve seat 43, it enters the connecting pipe 41. The pressure of the nitrogen after depressurization is stable, avoiding the impact of high pressure on subsequent components. The nitrogen first flows through two horizontally stepped heating elements 44 that are staggered vertically. After the heater 442 is started, the heat is transferred to the contact element 443 through the heat conduction element 446. Because the contact element 443 is linearly arranged and staggered vertically, it forms a tortuous flow channel, which greatly increases the contact area between the nitrogen and the heat conduction element 446. The nitrogen absorbs heat and rises in temperature, preventing low temperature from entering the insulation tank 1. At the same time, some water vapor in the nitrogen condenses when it encounters cold and flows into the receiving cavity 445 under the guidance of the inclined groove 447. Then it flows into the collection box 451 through the connecting element 453 and is finally discharged to the outside of the insulation box 2 through the drain pipe 452. The nitrogen that has been heated and initially dehydrated continues to flow through the dryer filter body 42 to remove the remaining water vapor and impurities. At this time, the dryer filter body 42 has a reduced load and extended service life because some water vapor has been removed in the early stage. The treated, dry, and clean nitrogen gas enters the insulated tank 1 through connecting pipe 41. It diffuses evenly through the pores of the perforated plate 5, gradually replacing the original oxygen, carbon dioxide, and other gases inside the tank. Nitrogen gas is continuously introduced for a period of time until a stable, pure nitrogen atmosphere is formed inside the tank. Then, the valve of the high-pressure nitrogen tank 30 is closed, completing the atmosphere replacement. The sample is stored in the inert atmosphere of the insulated tank 1. During this period, the insulation layer effectively maintains a stable temperature inside the tank, preventing interference from the external environment and ensuring that the sample's condition before performance testing remains unaffected. When removing the sample, slowly unscrew the can lid 6 to release the nitrogen gas inside the can, avoiding airflow impacting the sample. Regularly clean the liquid accumulated in the collection box 451, check the filtration effect of the dryer filter body 42, replace the filter element in time, and at the same time check the connection status of the heater 442 and the heat conduction component 446 to ensure that the heating function is normal.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealed container for placing samples based on bearing steel carburizing, comprising an insulated container body (1) and an insulated box (2), characterized in that: One side of the outer wall of the heat preservation tank (1) is fixedly connected to the heat preservation box (2), and one side of the heat preservation box (2) is fixedly connected to the heat preservation cylinder (3). A high-pressure nitrogen cylinder (30) is installed on the inner side of the heat preservation cylinder (3). A nitrogen cylinder connection mechanism (4) is installed between the heat preservation tank (1) and the high-pressure nitrogen cylinder (30). The nitrogen tank connection mechanism (4) includes a connecting pipe (41), a dryer filter body (42), and a pressure reducing valve seat (43). One end of the connecting pipe (41) is fixedly connected to the heat preservation tank (1), and the other end of the connecting pipe (41) is fixedly connected to the high-pressure nitrogen tank (30) through the pressure reducing valve seat (43). The dryer filter body (42) is fixedly installed on one side inside the connecting pipe (41), and two horizontal stepped heating elements (44) are fixed on the other side of the connecting pipe (41). The two horizontal stepped heating elements (44) are staggered vertically. A collecting element (45) is fixedly installed at one end inside the connecting pipe (41).

2. The sample sealing container based on bearing steel carburizing according to claim 1, characterized in that: The horizontal stepped heating element (44) includes an insulation plate (441), which is parallel to the connecting pipe (41). A heater (442) is fixed on the inner side of the insulation plate (441), and a plurality of linearly arranged contact elements (443) are fixed on the upper side of the insulation plate (441). An installation cavity (444) and a storage cavity (445) are opened on the inner side of the contact elements (443), and a heat-conducting element (446) is embedded in the inner side of the installation cavity (444).

3. The sample sealing container based on bearing steel carburizing according to claim 2, characterized in that: The lower surface of the contact (443) is horizontal, the upper surface of the contact (443) is inclined, and the inclination angle of the upper surface of the contact (443) is 45°.

4. The sample sealing container based on bearing steel carburizing according to claim 2, characterized in that: The mounting cavity (444) is located in the middle of the inner side of the contact (443) and extends to the bottom of the contact (443).

5. The sample sealing container based on bearing steel carburizing according to claim 2, characterized in that: The storage cavity (445) is located on both sides of the mounting cavity (444). The inner side of the storage cavity (445) is an arc-shaped structure. Multiple storage cavities (445) on the same side are located on the same horizontal line. The top of both sides of the heat-conducting component (446) is provided with inclined grooves (447). The lower end of the heat-conducting component (446) is in contact with the heating end of the heater (442).

6. The sample sealing container based on bearing steel carburizing according to claim 1, characterized in that: The collection component (45) includes a collection box (451), and the bottom of both ends of the collection box (451) are fixedly connected to a drain pipe (452). The drain pipe (452) extends to the outside of the insulated box (2). Connectors (453) are fixedly connected to both sides above the collection box (451). One end of the connector (453) is inclined, and the other end of the connector (453) is fixedly connected to the inside of the corresponding storage cavity (445).

7. The sample sealing container based on bearing steel carburizing according to claim 1, characterized in that: A perforated plate (5) is fixedly connected to the middle of the inner side of the heat-insulating tank (1). The axis of the perforated plate (5) is on the same straight line as the axis of the heat-insulating tank (1). A tank cover (6) is threadedly connected to the top of the heat-insulating tank (1).

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