CN-122016454-A - Novel gas protection structure of small punch testing machine

CN122016454ACN 122016454 ACN122016454 ACN 122016454ACN-122016454-A

Abstract

The invention provides a novel gas protection structure of a small punch testing machine, which relates to the technical field of small punch testing and comprises an installation heat preservation unit, a sealing shielding unit, a gas conveying unit and a conveying detection unit; the sealing shielding unit is arranged at the top of the heat preservation unit; the invention discloses a circular quartz tube automatic sealing device, which comprises a mounting heat-preserving unit, a gas conveying unit, a conveying detection unit, a sealing shielding cover and a gas protection structure, wherein the four groups of gas conveying units are arranged in total and are mounted on the mounting heat-preserving unit, the conveying detection unit is mounted on the mounting heat-preserving unit and the gas conveying unit and is used for conveying inert gas, and the conveying detection unit is also used for detecting whether the four groups of gas conveying units are reset or not.

Inventors

ZHENG XIANGFENG
ZHANG SHUO
ZHANG YUETAO
ZHANG YANSEN
Meng Weiran
WU LINLIN
LI XIONGWEI
DONG YUEHONG
WANG LIANG

Assignees

国家能源集团科学技术研究院有限公司
国能锅炉压力容器检验有限公司
国家能源投资集团有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. The novel gas protection structure of the small punch testing machine comprises an installation heat preservation unit (100), a sealing shielding unit (200), a gas conveying unit (300) and a conveying detection unit (400), and is characterized in that the sealing shielding unit (200) is installed at the top of the installation heat preservation unit (100), the sealing shielding unit (200) is used for automatically sealing the top of the installation heat preservation unit (100) when a test is not conducted, four groups of the gas conveying units (300) are arranged on the installation heat preservation unit (100), the gas conveying unit (300) is used for guiding inert gas to be contacted with a sample to be tested, the conveying detection unit (400) is installed on the installation heat preservation unit (100) and the gas conveying unit (300), the conveying detection unit (400) is used for conveying inert gas, and the conveying detection unit (400) is also used for detecting whether the four groups of the gas conveying units (300) are reset or not.
2. The novel gas protection structure of the small punch testing machine is characterized in that the installation heat preservation unit (100) comprises a testing machine connecting seat (101) and a round quartz tube (102), two circles of installation holes are formed in the testing machine connecting seat (101), the lower circle of installation holes are used for connecting the testing machine connecting seat (101) with a testing machine, the upper circle of installation holes are used for installing a testing clamp, and the round quartz tube (102) is fixedly installed on the testing machine connecting seat (101).
3. The novel gas protection structure of the small punch testing machine is characterized in that the installation heat preservation unit (100) further comprises positioning magnets a (103) and a round heat preservation cover (104), four positioning magnets a (103) are arranged in total, the four positioning magnets a (103) are fixedly installed on the inner wall of the round quartz tube (102), and the round heat preservation cover (104) is fixedly installed on the outer wall of the round quartz tube (102).
4. The novel gas protection structure of the small punch testing machine is characterized in that the sealing shielding unit (200) comprises a circular mounting block (201), a circular positioning ring (202) and a sealing shielding cover (203), the circular mounting block (201) is fixedly mounted on the top of a circular heat preservation cover (104), the circular positioning ring (202) is fixedly mounted on the top of the circular mounting block (201), the sealing shielding cover (203) is rotatably mounted outside the circular mounting block (201), and the sealing shielding cover (203) is located between the circular heat preservation cover (104) and the circular positioning ring (202).
5. The novel gas protection structure of the small punch testing machine, which is disclosed by claim 4, is characterized in that the sealing shielding unit (200) further comprises supporting balls (204) and positioning supports (205), wherein the supporting balls (204) are provided with four in total, the four supporting balls (204) are rotatably arranged on the sealing shielding cover (203), and the positioning supports (205) are fixedly arranged on the top of the circular heat preservation cover (104).
6. The novel gas protection structure of the small punch testing machine, which is disclosed in claim 5, is characterized in that the sealing shielding unit (200) further comprises a circular reset ring (206) and a spiral spring a (207), wherein the circular reset ring (206) is fixedly arranged on the positioning support (205), the circular reset ring (206) is further in sliding connection with the sealing shielding cover (203), the number of the spiral springs a (207) is two, the two spiral springs a (207) are sleeved outside the circular reset ring (206), and the two spiral springs a (207) are located between the sealing shielding cover (203) and the positioning support (205).
7. The novel gas protection structure of the small punch testing machine, which is described in claim 3, is characterized in that the gas conveying unit (300) comprises an L-shaped conveying pipe a (301), a movable telescopic pipe (302) and a circular limiting frame a (303), the L-shaped conveying pipe a (301) is fixedly arranged on a connecting seat (101) of the testing machine, the movable telescopic pipe (302) is slidably arranged on the L-shaped conveying pipe a (301), a circle of circular conveying holes a (3021) are formed in the movable telescopic pipe (302), the circle of circular conveying holes a (3021) are formed in the L-shaped conveying pipe a (301), and the circular limiting frame a (303) is fixedly arranged outside the movable telescopic pipe (302).
8. The novel gas protection structure of the small punch testing machine, which is characterized in that the gas conveying unit (300) further comprises a circular limiting frame b (304), a spiral spring b (305) and a positioning magnet b (306), wherein the circular limiting frame b (304) is fixedly arranged outside the movable telescopic pipe (302), the spiral spring b (305) is sleeved outside the movable telescopic pipe (302), the spiral spring b (305) is located between the L-shaped conveying pipe a (301) and the circular limiting frame a (303), the positioning magnet b (306) is fixedly arranged outside the movable telescopic pipe (302), and the positioning magnet b (306) and the positioning magnet a (103) are concentrically arranged.
9. The novel gas protection structure of the small punch testing machine, which is disclosed by claim 8, is characterized in that the conveying detection unit (400) comprises a semicircular conveying cover (401), a pressure sensor (402) and an L-shaped conveying pipe b (403), wherein the semicircular conveying cover (401) is fixedly arranged outside a testing machine connecting seat (101), a gas cylinder connector (4011) is arranged on the semicircular conveying cover (401), the bottom end of the L-shaped conveying pipe a (301) is communicated with the semicircular conveying cover (401), the pressure sensor (402) is fixedly arranged on the semicircular conveying cover (401), the L-shaped conveying pipe b (403) is fixedly arranged on the testing machine connecting seat (101), and the bottom end of the L-shaped conveying pipe b (403) is communicated with the semicircular conveying cover (401).
10. The novel gas protection structure of the small punch testing machine of claim 9, wherein the conveying detection unit (400) further comprises a movable control plate (404) and a special-shaped connecting frame (405), the movable control plate (404) is slidably mounted on the L-shaped conveying pipe b (403), a circular conveying hole b (4041) is formed in the movable control plate (404), the top end of the special-shaped connecting frame (405) is fixedly connected with the circular limiting frame b (304), and the bottom end of the special-shaped connecting frame (405) is fixedly connected with the movable control plate (404).

Description

Novel gas protection structure of small punch testing machine Technical Field The invention belongs to the technical field of small punch tests, and particularly relates to a novel gas protection structure of a small punch test machine. Background The small punch test is used as a core miniature test technology for evaluating mechanical properties of materials, has irreplaceable functions in rare material detection, component local property evaluation, material research under special environments such as high temperature, corrosion and the like, and has the advantages that test data deviation is caused because a sample is easy to oxidize and corrode when being contacted with air in the test process, so that protective gas is required to be introduced to isolate air, and the stability of the test environment is ensured. The existing gas protection structure also has the following problems that 1, an automatic sealing structure is lacking, dust is easy to enter the gas protection structure when a test is not performed, 2, inert gas cannot be guided, a sample in a test die cannot be in quick contact with the inert gas, the test efficiency is affected, and 3, when a pipeline for conveying the inert gas is not accurately reset after the test die is replaced, workers cannot be timely prompted. Disclosure of Invention The embodiment of the disclosure relates to a novel gas protection structure of a small punch testing machine, which comprises a mounting heat preservation unit, a sealing shielding unit, a gas conveying unit and a conveying detection unit, wherein when an output shaft on the testing machine is separated from two corresponding supporting balls, the sealing shielding cover can automatically reset under the action of two spiral springs a, so that the automatic sealing of a round quartz tube is realized, the movable telescopic tubes are arranged to guide inert gas in the L-shaped conveying tube a so that the inert gas can be directly contacted with a sample, when the inert gas in a semicircular conveying cover cannot be discharged, a pressure sensor can detect pressure information and transmit the pressure information to an external control module and a prompting module, so that prompt personnel can be prompted to timely reset the four movable telescopic tubes, and the problems that dust easily enters the gas protection structure when the test is not performed, the sample in the test die cannot be quickly contacted with the inert gas, and the staff cannot be timely prompted when a pipeline for conveying the inert gas is not accurately reset are solved. The invention provides a novel gas protection structure of a small punch testing machine, which comprises an installation heat preservation unit, a sealing shielding unit, a gas conveying unit and a conveying detection unit, wherein the sealing shielding unit is arranged at the top of the installation heat preservation unit and is used for automatically sealing the top of the installation heat preservation unit when a test is not performed, four groups of gas conveying units are arranged on the installation heat preservation unit, the gas conveying unit is used for guiding inert gas to be contacted with a sample to be tested, the conveying detection unit is arranged on the installation heat preservation unit and the gas conveying unit and is used for conveying the inert gas, and the conveying detection unit is also used for detecting whether the four groups of gas conveying units are reset or not. In at least some embodiments, the installation heat preservation unit comprises a testing machine connecting seat and a round quartz tube, wherein two circles of installation holes are formed in the testing machine connecting seat, one circle of installation holes below the testing machine connecting seat are used for connecting the testing machine connecting seat with a testing machine, one circle of installation holes above the testing machine connecting seat are used for installing a testing clamp, and the round quartz tube is fixedly installed on the testing machine connecting seat. In at least some embodiments, the installation heat preservation unit further comprises positioning magnets a and a round heat preservation cover, wherein the four positioning magnets a are arranged in total and fixedly installed on the inner wall of the round quartz tube, and the round heat preservation cover is fixedly installed on the outer wall of the round quartz tube. In at least some embodiments, the sealing shielding unit comprises a circular mounting block, a circular positioning ring and a sealing shielding cover, wherein the circular mounting block is fixedly arranged at the top of the circular heat insulation cover, the circular positioning ring is fixedly arranged at the top end of the circular mounting block, the sealing shielding cover is rotatably arranged outside the circular mounting block, and the sealing shielding cover is positioned between the circular heat