阅读说明：本技术 一种金刚石复合片热稳定性检测系统及其检测方法 (Diamond compact thermal stability detection system and detection method thereof ) 是由 许国峰 何文嵩 林树忠 陈卫民 崔行宇 李长海 于 2020-12-16 设计创作，主要内容包括：本发明公开了一种金刚石复合片热稳定性检测系统及其检测方法,检测系统包括数据处理系统、温度控制与数据采集系统和温度发生器与测量机构,数据处理系统通过数据连接线通信连接温度控制与数据采集系统,温度控制与数据采集系统通过电线连接温度发生器与测量机构；内密封管外部设置有外密封管,外密封管外部设置有加热炉,外密封管后侧上部设置有进气口,内密封管中部设置有中心杆,中心杆后侧设置有金刚石复合片放置区,中心杆上方设置有测温线。该金刚石复合片热稳定性检测系统,操作方便高效,为金刚石复合片及其他工件的热稳定性能检测提供一种简单、直接、高效的检测手段；降低检测成本,经济性好,适用于企业对金刚石复合片产品的常规检测。(The invention discloses a detection system and a detection method for the thermal stability of a diamond compact, wherein the detection system comprises a data processing system, a temperature control and data acquisition system, a temperature generator and a measurement mechanism, the data processing system is in communication connection with the temperature control and data acquisition system through a data connecting line, and the temperature control and data acquisition system is connected with the temperature generator and the measurement mechanism through electric wires; the outer sealing pipe is arranged outside the inner sealing pipe, the heating furnace is arranged outside the outer sealing pipe, the air inlet is formed in the upper portion of the rear side of the outer sealing pipe, the middle of the inner sealing pipe is provided with a central rod, the rear side of the central rod is provided with a diamond compact placing area, and a temperature measuring line is arranged above the central rod. The system for detecting the thermal stability of the diamond compact is convenient and efficient to operate, and provides a simple, direct and efficient detection means for detecting the thermal stability of the diamond compact and other workpieces; the detection cost is reduced, the economical efficiency is good, and the method is suitable for conventional detection of diamond compact products by enterprises.)

1. The utility model provides a diamond compact piece thermal stability detecting system, includes data processing system (1), temperature control and data acquisition system (2) and temperature generator and measuring mechanism (3), its characterized in that: the data processing system (1) is in communication connection with the temperature control and data acquisition system (2) through a 485 data connecting line, and the temperature control and data acquisition system (2) is connected with the temperature generator and the measuring mechanism (3) through wires;

the temperature generator and measuring mechanism (3) comprises an outer sealing pipe (3-1), an inner sealing pipe (3-2), a heating furnace (3-3), a diamond compact placing area (3-4), a central rod (3-5), a temperature measuring line (3-6), a displacement sensor (3-7), an air outlet (3-8) and an air inlet (3-9), wherein the outer sealing pipe (3-1) is arranged outside the inner sealing pipe (3-2), the heating furnace (3-3) is arranged outside the outer sealing pipe (3-1), a sealing ring is arranged between the outer sealing pipe (3-1) and the inner sealing pipe (3-2), the air inlet (3-9) is arranged at the upper part of the rear side of the outer sealing pipe (3-1), the central rod (3-5) is arranged in the middle of the inner sealing pipe (3-2), and a diamond compact placing area (3-4) is arranged on the rear side of the central rod (3-5), a temperature measuring line (3-6) is arranged above the central rod (3-5), a displacement sensor (3-7) is arranged at the front end of the central rod (3-5), and an air outlet (3-8) is arranged on the upper part of the front side of the inner sealing pipe (3-2).

2. The system of claim 1, wherein the diamond compact thermal stability detection system comprises: the outer sealing pipe (3-1) and the inner sealing pipe (3-2) form a composite sheet inert temperature rising area.

3. The system of claim 1, wherein the diamond compact thermal stability detection system comprises: the outer sealing pipe (3-1) and the inner sealing pipe (3-2) are made of quartz glass which can resist the temperature of more than 1200 ℃.

4. The system of claim 1, wherein the diamond compact thermal stability detection system comprises: the temperature control and data acquisition system (2) has the temperature acquisition precision of 0.1-1 ℃ and the displacement acquisition precision of 0.001-0.005 mm.

5. A detection method based on the diamond compact thermal stability detection system of claim 1, characterized in that: the method comprises the following steps:

the method comprises the following steps: when the device works, inert gas is introduced into the inert heating area of the composite sheet, and the central rod (3-5) is tightly close to the diamond composite sheet in the diamond composite sheet placing area (3-4) under the protection of the inert gas;

step two: along with the rise of the temperature of the heating furnace (3-3), the detected diamond compact expands gradually, displacement sensors (3-7) arranged at the inner sealing tube (3-2) and the central rod (3-5) are used for measuring relative displacement data, the expansion amount of the diamond compact is reflected to the displacement data acquisition in the temperature control and data acquisition system (2) through the displacement sensors (3-7), and meanwhile, the temperature control and data acquisition system (2) acquires temperature data through a temperature measuring line (3-6);

step three: the temperature data and the displacement data collected by the temperature control and data collection system (2) are communicated and uploaded to the data processing system (1) through a 485 data connecting line;

step four: the data processing system (1) automatically completes the processing of the data to form a temperature-displacement curve.

Technical Field

The invention relates to the technical field of material thermal stability performance detection equipment, in particular to a system and a method for detecting the thermal stability of a diamond compact.

Background

The diamond compact is mainly used for oil drilling, the performance of an oil drill bit is determined by the performance of the diamond compact to a great extent, the diamond compact is formed by compounding a diamond polycrystalline layer and hard alloy, the difference of the thermal expansion coefficients of the two materials is great, heating in the drilling process is inevitable, the environmental temperature is high during drilling, the local heating amount of a difficult-to-drill stratum is greatly increased, the compact is enabled to be at a high temperature, after the temperature of the compact is increased, great stress can be generated at the joint interface of the two materials, the performance of the compact can be greatly reduced, and the heat stability is achieved. Therefore, the detection of the thermal stability index of the diamond compact is very important.

At present, the thermal stability performance of the diamond compact is detected by adopting a thermal grinding detection and a thermal weight difference thermal analyzer. The hot grinding detection has the defects that the detection conditions cannot be kept consistent and dust pollution is easily caused; the thermal gravity difference thermal analyzer can analyze the change process of the diamond compact, is more suitable for experimental research, but has complex equipment operation and low efficiency, and is not suitable for conventional detection of diamond compact products by enterprises.

Disclosure of Invention

The invention aims to provide a thermal stability detection system and a detection method of a diamond compact, which aim to solve the problems that the detection conditions cannot be kept consistent and dust pollution is easily caused when hot grinding detection is carried out in the background technology; the thermal gravity difference thermal analyzer has the advantages of complex operation and low efficiency, and is not suitable for the conventional detection of diamond compact products by enterprises.

In order to achieve the purpose, the invention provides the following technical scheme: a thermal stability detection system for a diamond compact comprises a data processing system, a temperature control and data acquisition system, a temperature generator and a measuring mechanism, wherein the data processing system is in communication connection with the temperature control and data acquisition system through a 485 data connecting line, and the temperature control and data acquisition system is connected with the temperature generator and the measuring mechanism through electric wires;

the temperature generator and the measuring mechanism comprise an outer sealing pipe, an inner sealing pipe, a heating furnace, a diamond composite sheet placing area, a central rod, a temperature measuring line, a displacement sensor, a gas outlet and a gas inlet, wherein the outer sealing pipe is arranged outside the inner sealing pipe, the heating furnace is arranged outside the outer sealing pipe, a sealing ring is arranged between the outer sealing pipe and the inner sealing pipe, the gas inlet is arranged on the upper portion of the rear side of the outer sealing pipe, the middle portion of the inner sealing pipe is provided with the central rod, the diamond composite sheet placing area is arranged on the rear side of the central rod, the temperature measuring line is arranged above the central rod, the displacement sensor is arranged at the front end of the central rod.

Preferably, the outer sealing pipe and the inner sealing pipe form a composite sheet inert heating area.

Preferably, the outer sealing pipe and the inner sealing pipe are both made of quartz glass which can resist the temperature of more than 1200 ℃.

Preferably, the temperature control and data acquisition system has the temperature acquisition precision of 0.1-1 ℃ and the displacement acquisition precision of 0.001-0.005 mm.

Preferably, the detection method of the diamond compact thermal stability detection system is characterized in that: the method comprises the following steps:

the method comprises the following steps: when the device works, inert gas is introduced into the inert heating area of the composite sheet, and the central rod is abutted against the diamond composite sheet in the diamond composite sheet placing area under the protection of the inert gas;

step two: along with the rise of the temperature of the heating furnace, the detected diamond compact expands gradually, displacement sensors arranged at the inner sealed tube and the central rod are used for measuring relative displacement data, the expansion amount of the diamond compact is reflected to the displacement data acquisition in the temperature control and data acquisition system through the displacement sensors, and meanwhile, the temperature control and data acquisition system acquires temperature data through temperature measurement lines;

step three: the temperature data and the displacement data collected by the temperature control and data collection system are communicated and uploaded to the data processing system through a 485 data connecting line;

step four: the data processing system automatically completes the processing of the data to form a temperature-displacement curve.

Compared with the prior art, the invention has the beneficial effects that: the system for detecting the thermal stability of the diamond compact is convenient and efficient to operate, and provides a simple, direct and efficient detection means for detecting the thermal stability of the diamond compact and other workpieces; meanwhile, the detection cost is reduced, the economy is good, and the method is suitable for conventional detection of diamond compact products by enterprises.

Drawings

FIG. 1 is a schematic diagram of a detection system according to the present invention;

FIG. 2 is a schematic view of a temperature generator and a measuring mechanism according to the present invention;

FIG. 3 is a temperature-displacement graph of an embodiment of the present invention.

In the figure: the device comprises a data processing system 1, a temperature control and data acquisition system 2, a temperature generator and measurement mechanism 3, an outer sealing pipe 3-1, an inner sealing pipe 3-2, a heating furnace 3-3, a diamond compact placing area 3-4, a center rod 3-5, a temperature measuring line 3-6, a displacement sensor 3-7, an air outlet 3-8 and an air inlet 3-9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a diamond compact piece thermal stability detecting system, including data processing system 1, temperature control and data acquisition system 2 and temperature generator and measuring mechanism 3, data processing system 1 passes through the data output in 485 data connection line communication connection temperature control and the data acquisition system 2, temperature control and data acquisition system 2 pass through electric wire connection temperature generator and measuring mechanism 3, the temperature acquisition precision of temperature control and data acquisition system 2 is 0.1-1 ℃, the acquisition precision of displacement is 0.001-0.005 mm.

The temperature generator and measuring mechanism 3 comprises an outer sealing pipe 3-1, an inner sealing pipe 3-2, a heating furnace 3-3, a diamond compact placing area 3-4, a central rod 3-5, a temperature measuring line 3-6, a displacement sensor 3-7, a gas outlet 3-8 and a gas inlet 3-9, the outer sealing pipe 3-1 is arranged outside the inner sealing pipe 3-2, the heating furnace 3-3 is arranged outside the outer sealing pipe 3-1, a sealing ring is arranged between the outer sealing pipe 3-1 and the inner sealing pipe 3-2, the gas inlet 3-9 is arranged on the upper portion of the rear side of the outer sealing pipe 3-1, the central rod 3-5 is arranged in the middle of the inner sealing pipe 3-2, and the diamond compact placing area 3-4 is arranged on the rear side of the central rod 3-, a temperature measuring line 3-6 is arranged above the central rod 3-5, a displacement sensor 3-7 is arranged at the front end of the central rod 3-5, an air outlet 3-8 is arranged at the upper part of the front side of the inner sealing tube 3-2, the outer sealing tube 3-1 and the inner sealing tube 3-2 form a composite sheet inert heating area, and the outer sealing tube 3-1 and the inner sealing tube 3-2 are both made of quartz glass which can resist the temperature of more than 1200 ℃.

A detection method of a diamond compact thermal stability detection system comprises the following steps: the method comprises the following steps: the method comprises the following steps: when the device works, inert gas is introduced into the inert heating area of the composite sheet, and under the protection of the inert gas, the central rod 3-5 is tightly close to the diamond composite sheet in the diamond composite sheet placing area 3-4;

step two: along with the rise of the temperature of the heating furnace 3-3, the detected diamond compact expands gradually, the displacement sensors 3-7 arranged at the inner sealed tube 3-2 and the central rod 3-5 are used for measuring relative displacement data, the expansion amount of the diamond compact is reflected to the displacement data acquisition in the temperature control and data acquisition system 2 through the displacement sensors 3-7, and meanwhile, the temperature control and data acquisition system 2 acquires temperature data through the temperature measurement lines 3-6;

step three: the temperature data and the displacement data acquired by the temperature control and data acquisition system 2 are communicated and uploaded to the data processing system 1 through a 485 data connecting line;

step four: the data processing system 1 automatically completes the processing of the data to form a temperature-displacement curve.

Example (b): detecting 1 diamond compact of 1613 type:

the method comprises the following steps: when the device works, inert gas is introduced into an inert heating area of the composite sheet, and under the protection of the inert gas, the central rod 3-5 is close to the 1613 type diamond composite sheet;

step two: along with the rise of the temperature of the heating furnace 3-3, the detected 1613-type diamond compact expands gradually, the displacement sensors 3-7 arranged at the inner sealed tube 3-2 and the central rod 3-5 are used for measuring relative displacement data, the expansion amount of the compact 3-4 is reflected to the displacement data acquisition in the temperature control and data acquisition system 2 through the displacement sensors 3-7, and meanwhile, the temperature control and data acquisition system 2 acquires temperature data through the temperature measuring lines 3-6;

step three: the temperature data and the displacement data acquired by the temperature control and data acquisition system 2 are communicated and uploaded to the data processing system 1 through a 485 data connecting line;

step four: the data processing system 1 automatically completes the processing of the data to form a temperature-displacement curve, as shown in fig. 3;

step five: the critical point of the thermal stability temperature of the tested 1613 type diamond compact was found to be 883 ℃.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.