CN210037405U - Anti-oxidation device of high temperature unipolar resistance to compression experiment rock specimen - Google Patents

Abstract

The utility model discloses a high temperature uniaxial compression test rock sample oxidation prevention device, which comprises a hollow sleeve, a bottom pressure bearing seat, a clamp, two throat hoops, an upper pressure head and a rock sample. The bottom layer of the bottom pressure-bearing seat is a round table, and a boss with a shallow groove is integrally arranged in the middle of the upper surface of the round table. One end is sleeved on the outer edge of the boss and fits tightly. The fixture includes an upper fixture and a lower fixture. The top of the lower fixture is a convex arc. The other end of the rock sample is sleeved inside and closely fits with the inner edge. The other end of the hollow sleeve is sleeved on the outer edge of the lower fixture and held. Tight fit. The lower end of the upper clamp is in a concave arc shape, and the concave arc shape of the upper clamp matches the convex arc shape of the lower clamp. Throat clamps are used to fasten the upper and lower parts of the hollow sleeve. The device has a simple structure, is easy to operate, and can effectively prevent high temperature oxidation of rock samples.

Description

A high temperature uniaxial compression test rock sample oxidation prevention device

technical field

The utility model relates to the technical field of rock mechanics experiments, in particular to a high temperature uniaxial compression test rock sample oxidation prevention device

Background technique

The impact of high temperature on geotechnical media has always been a frontier topic that scholars are keen on, such as deep buried geotechnical engineering, deep buried treatment of nuclear waste and so on. In order to further study the mechanical properties of rock, it is usually necessary to study the effect of temperature on the mechanical properties of rock through a large number of experiments, and analyze its mechanical properties under different temperature gradients. However, the protection and analysis of the influence of the elements contained in the rock sample on its properties caused by the oxidation of the rock sample during the heating and heat preservation process are hardly considered in the relevant experiments at home and abroad to study the effect of temperature on the mechanical properties of the rock. The rock is affected by its composition, The influence of factors such as water content and pore structure will cause rocks to exhibit different mechanical properties. In order to better simulate the high-temperature anaerobic environment, control irrelevant variables in the experimental process, and ensure the objectivity of the test results, it has become an urgent problem to be solved. At present, there is no anti-oxidation experimental device for high-temperature rock mechanics experiments, especially uniaxial compression experiments. .

Utility model content

The purpose of the utility model is to provide a high temperature uniaxial compression test rock sample anti-oxidation device, which can effectively prevent the oxidation of rock samples in a high temperature environment, has a simple structure and is easy to operate.

In order to achieve the above purpose, the high temperature uniaxial compression test rock sample oxidation prevention device of the present invention includes a hollow sleeve, a bottom pressure bearing seat, a clamp, two throat hoops, an upper pressure head and a rock sample; the rock sample is a cylinder. The bottom layer of the bottom pressure-bearing seat is a circular platform, a boss containing a shallow groove is integrally arranged in the middle of the upper surface of the circular platform, and one end of the rock sample is sleeved in the shallow groove and is connected with the inner edge of the boss. Closely fit, one end of the hollow sleeve is sleeved on the outer edge of the boss and tightly fitted; the clamp includes an upper clamp and a lower clamp, the lower clamp is hollow inside, the top is a convex arc, the rock The other end of the sample is sleeved inside and closely fits with the inner edge, and the other end of the hollow sleeve is sleeved on the outer edge of the lower clamp and keeps close fit; the upper clamp is a cylinder, and the lower end is a concave Arc shape, the inner concave arc shape of the upper clamp fits with the convex arc shape of the lower clamp; the throat hoop is used to fasten the upper and lower parts of the hollow sleeve; the upper pressure head is placed on the Above the upper fixture, it is used to apply pressure to the rock sample.

The beneficial effects of the utility model are as follows: the lower end of the rock sample is tightly sleeved with the bottom pressure-bearing seat, the upper end is tightly sleeved with the fixture, a hollow sleeve is sleeved outside, and the upper and lower parts of the hollow sleeve are sturdy with throat hoop; it can be effectively fixed and locate the rock sample, and isolate the air; the fixture is set into two parts and uses a circular arc surface to effectively ensure that the force applied to the rock sample is a uniformly distributed vertical force; the material of the hollow sleeve is red copper, because the texture of red copper is soft, especially It is softer at high temperature, which can reduce the force originally applied to the rock sample and eliminate the factors that affect the experiment.

Description of drawings

Fig. 1 is the structural representation of the present utility model;,

Fig. 2 is the structure exploded view of the present utility model;

In the figure, 1-hollow sleeve, 2-bottom bearing seat, 3-fixture, 31-upper fixture, 32-lower fixture, 4-throat hoop, 5-upper indenter, 6-rock sample.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1-2, a high temperature uniaxial compression test rock sample oxidation prevention device, including a hollow sleeve 1, a bottom pressure bearing seat 2, a clamp 3, two throat hoop 4 and an upper pressure head 5 and a rock sample 6. The rock sample 6 is a cylinder; the bottom layer of the bottom pressure-bearing seat 2 is a circular platform, and a boss containing a shallow groove is integrally arranged in the middle of the upper surface of the circular platform. The inner edge of the boss is closely attached, and one end of the hollow sleeve 1 is sleeved on the outer edge of the boss and closely attached; the fixture 3 includes an upper fixture 31 and a lower fixture 32, and the lower fixture 32 is provided with a shallow groove inside, and the top is convex Out of an arc shape, the other end of the rock sample 6 is sleeved in the shallow groove, and closely fits with the inner edge of the lower fixture 32, and the other end of the hollow sleeve 1 is sleeved on the outer edge of the lower fixture 32 and keeps close fit; The upper clamp 31 is a cylinder, the lower end is a concave arc, and the concave arc of the upper clamp 31 fits with the convex arc of the lower clamp; the throat hoop 4 is used to fasten the upper and lower parts of the hollow sleeve 1; The upper indenter is placed above the upper fixture for applying pressure to the rock sample 6 .

The material of the bottom pressure-bearing seat, the clamp 3 and the upper pressure head 5 is cast steel, the throat hoop 4 is the prior art, the material is stainless steel, and the material of the hollow sleeve 1 is metal, preferably red copper, because the red copper texture is relatively soft, especially The performance is more soft at high temperature, which can reduce the force originally applied to the rock sample and eliminate the factors affecting the experiment; the thickness of red copper is less than 0.5 mm.

The device is installed inside the press, and there is a heating source inside the press.

The working principle of the device is as follows: place the bottom pressure-bearing seat 2 horizontally, set the bottom end of the rock sample 6 in the shallow groove of the boss, and then set the hollow sleeve 1 on the outer edge of the boss; The top of the sample 6 is sleeved into the shallow groove of the lower clamp 32, and the outer edge of the lower clamp 32 is fitted with the hollow sleeve 1; The convex arc of the clamp 32 fits. Set the two throat hoop 4 on the upper and lower parts of the hollow sleeve 1 respectively, and then tighten and fix.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited thereto. make various changes.

Claims (2)

1. The utility model provides a high temperature unipolar resistance to compression experiment rock specimen anti oxidation device which characterized in that: comprises a hollow sleeve (1), a bottom pressure bearing seat (2), a clamp (3), two hose clamps (4), an upper pressure head (5) and a rock sample (6); the rock sample (6) is a cylinder; the bottom layer of the bottom bearing seat (2) is a circular truncated cone, a boss with a shallow groove is integrally arranged in the middle of the upper surface of the circular truncated cone, one end of the rock sample (6) is sleeved in the shallow groove and tightly attached to the inner edge of the boss, and one end of the hollow sleeve (1) is sleeved on the outer edge of the boss and tightly attached to the outer edge of the boss; the clamp (3) comprises an upper clamp (31) and a lower clamp (32), a shallow groove is formed in the lower clamp (32), the top of the lower clamp is in a convex arc shape, the other end of the rock sample (6) is sleeved in the shallow groove and tightly attached to the inner edge of the lower clamp (32), and the other end of the hollow sleeve (1) is sleeved on the outer edge of the lower clamp (32) and keeps tightly attached to the outer edge of the lower clamp; the upper clamp (31) is a cylinder, the lower end of the upper clamp is in an inwards concave arc shape, and the inwards concave arc shape of the upper clamp (31) is matched with the convex arc shape of the lower clamp; the throat hoop (4) is used for fastening the upper part and the lower part of the hollow sleeve (1); the upper pressure head (5) is placed above the upper clamp (31) and is used for applying pressure on the rock sample (6).

2. The anti-oxidation device for the high-temperature uniaxial compression test rock sample according to claim 1, which is characterized in that: the hollow sleeve (1) is made of red copper.

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