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CN209656030U - Concrete heat strain detection testing device in a kind of high temperature of fire - Google Patents

Concrete heat strain detection testing device in a kind of high temperature of fire Download PDF

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CN209656030U
CN209656030U CN201920727085.1U CN201920727085U CN209656030U CN 209656030 U CN209656030 U CN 209656030U CN 201920727085 U CN201920727085 U CN 201920727085U CN 209656030 U CN209656030 U CN 209656030U
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deformation
test
fire
high temperature
thermal strain
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高丹盈
李大伟
汤寄予
孔宜鸣
房栋
杨林
朱海堂
汤俊霞
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Zhengzhou University
Henan University of Science and Technology
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Henan University of Science and Technology
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Abstract

本实用新型涉及土木工程材料试验测试技术领域,具体涉及一种火灾高温中混凝土热应变测试装置,包括形变测试框架;火灾模拟单元,其设置在形变测试框架的内部,用于模拟火灾高温,所述火灾模拟单元的内部放置有试件;热应变测试单元,分为用于限制试件运动的定位部和用于测试试件热变形值的测量部,所述定位部和测量部相对固定在所述形变测试框架框体上,所述试件的左右端部分别与所述定位部和测量部相接触;以及控制单元,用于接收所述热应变测试单元传递的热变形信号和火灾模拟单元传递的温度信号,并实现对火灾模拟单元的控制。本实用新型可准确地测试火灾高温中混凝土热应变,且设计合理、结构简单、环保高效。

The utility model relates to the technical field of civil engineering material testing and testing, in particular to a thermal strain testing device for concrete in high-temperature fires, including a deformation testing frame; a fire simulation unit, which is arranged inside the deformation testing frame, for simulating high-temperature fires. A test piece is placed inside the fire simulation unit; the thermal strain test unit is divided into a positioning part for restricting the movement of the test piece and a measuring part for testing the thermal deformation value of the test piece, and the positioning part and the measuring part are relatively fixed on On the frame body of the deformation test frame, the left and right ends of the test piece are respectively in contact with the positioning part and the measuring part; and a control unit is used to receive the thermal deformation signal transmitted by the thermal strain test unit and the fire simulation The temperature signal transmitted by the unit and realizes the control of the fire simulation unit. The utility model can accurately test the thermal strain of concrete in the high temperature of fire, and has reasonable design, simple structure, environmental protection and high efficiency.

Description

一种火灾高温中混凝土热应变测试装置A device for testing thermal strain of concrete in high temperature fire

技术领域technical field

本实用新型涉及土木工程材料试验测试技术领域,具体涉及一种火灾高温中混凝土热应变测试装置。The utility model relates to the technical field of civil engineering material testing and testing, in particular to a thermal strain testing device for concrete in fire and high temperature.

背景技术Background technique

随着我国城镇化进程的加速,城市土地资源日益紧缺,城市建筑日趋向高空发展。高强混凝土及其结构技术的进步也使高层建筑数量急剧增多、高度逐年攀升,高层建筑火灾事故也越来越多。而高层建筑火灾一直是世界性难题,一旦发生很难实施有效救援。火灾高温中高强混凝土易于爆裂并可能带来结构的失稳垮塌,由此带来巨大财产损失和严重人员伤亡。一般认为,热应变是造成高强混凝土高温爆裂的原因之一。混凝土属于非均质材料,各组分特别是骨料和水泥浆体之间热力学不匹配,即使无外界约束,当周围温度不断升高时,骨料和水泥浆体之间因热变形的不协调会导致胀裂(包括径向、环向开裂和骨料内部开裂)甚至爆裂的发生。因此,研究混凝土火灾高温中的热应变发展规律对于混凝土结构的抗火设计和火灾防控具有重要意义。但目前尚缺乏可测试火灾高温中混凝土热应变大小的试验装置和方法。With the acceleration of my country's urbanization process, urban land resources are increasingly scarce, and urban buildings are increasingly developing at high altitudes. The advancement of high-strength concrete and its structural technology has also led to a sharp increase in the number of high-rise buildings, and their heights have increased year by year, and there have been more and more fire accidents in high-rise buildings. And high-rise building fire has always been a worldwide problem, and it is difficult to implement effective rescue once it occurs. High-strength concrete is prone to bursting in high-temperature fires and may cause structural instability and collapse, resulting in huge property losses and serious casualties. It is generally believed that thermal strain is one of the causes of high-temperature bursting of high-strength concrete. Concrete is a heterogeneous material. There is a thermal mismatch between the components, especially the aggregate and the cement paste. Coordination can lead to bursting (including radial, circumferential cracking and internal cracking of aggregates) or even bursting. Therefore, it is of great significance to study the development law of thermal strain in high temperature concrete fire for the fire resistance design and fire prevention and control of concrete structures. However, there is still a lack of experimental devices and methods that can test the thermal strain of concrete in high-temperature fires.

发明内容Contents of the invention

为了克服上述现有技术中的不足,本实用新型提供一种火灾高温中混凝土热应变测试装置,可准确地测试火灾高温中混凝土热应变,且设计合理、结构简单、环保高效。In order to overcome the deficiencies in the prior art above, the utility model provides a concrete thermal strain test device in high temperature fire, which can accurately test the thermal strain of concrete in high temperature fire, and has reasonable design, simple structure, environmental protection and high efficiency.

为了实现上述目的,本实用新型采用以下的技术方案:In order to achieve the above object, the utility model adopts the following technical solutions:

本实用新型提供的一种火灾高温中混凝土热应变测试装置,包括:The utility model provides a concrete thermal strain test device in high temperature fire, which includes:

形变测试框架;Deformation test frame;

火灾模拟单元,其设置在形变测试框架的内部,用于模拟火灾高温,所述火灾模拟单元的内部放置有试件;A fire simulation unit, which is arranged inside the deformation test frame, is used to simulate the high temperature of a fire, and a test piece is placed inside the fire simulation unit;

热应变测试单元,分为用于限制试件运动的定位部和用于测试试件热变形值的测量部,所述定位部和测量部相对固定在所述形变测试框架框体上,所述试件的左右端部分别与所述定位部和测量部相接触;以及The thermal strain test unit is divided into a positioning part for restricting the movement of the test piece and a measuring part for testing the thermal deformation value of the test piece, the positioning part and the measuring part are relatively fixed on the deformation test frame body, the The left and right ends of the test piece are respectively in contact with the positioning part and the measuring part; and

控制单元,用于接收所述热应变测试单元传递的热变形信号和火灾模拟单元传递的温度信号,并实现对火灾模拟单元的控制。The control unit is used to receive the thermal deformation signal transmitted by the thermal strain testing unit and the temperature signal transmitted by the fire simulation unit, and realize the control of the fire simulation unit.

进一步地,所述火灾模拟单元包括:Further, the fire simulation unit includes:

高温炉;High temperature furnace;

防爆网,其安装在所述高温炉炉体内壁的内侧;explosion-proof net, which is installed on the inside of the inner wall of the high-temperature furnace;

至少一支第一温度传感器,布置在所述高温炉炉体的侧壁,其测量端伸入高温炉的炉膛中;以及炉门。At least one first temperature sensor is arranged on the side wall of the high-temperature furnace body, and its measuring end extends into the hearth of the high-temperature furnace; and a furnace door.

进一步地,所述防爆网由耐火钢板经预留均匀分布的导热孔制成。Further, the explosion-proof net is made of refractory steel plate with reserved and evenly distributed heat conduction holes.

进一步地,所述热应变测试单元的定位部包括压头箍板和压头;Further, the positioning part of the thermal strain test unit includes an indenter hoop and an indenter;

压头箍板,其左端部固定在所述形变测试框架的左肢框上,右端部嵌箍压头;Indenter hoop plate, its left end is fixed on the left limb frame of the deformation test frame, and the right end is embedded with an indenter;

压头,通过高温炉左侧壁预留的洞口伸入炉膛中,所述压头的右端部与试件的左端部接触;The indenter extends into the furnace through the hole reserved on the left side wall of the high-temperature furnace, and the right end of the indenter is in contact with the left end of the test piece;

所述热应变测试单元的测量部包括形变传递杆、变形传感器测试杆和变形传感器主体;The measuring part of the thermal strain testing unit includes a deformation transmission rod, a deformation sensor test rod and a deformation sensor main body;

形变传递杆,其左端部与试件的右端部接触,所述形变传递杆的左半部通过高温炉右侧壁预留的洞口伸入炉膛中,右半部伸入导向筒中空的导向孔中,所述导向筒通过导向筒支撑固定于形变测试框架上;The deformation transmission rod, the left end of which is in contact with the right end of the test piece, the left half of the deformation transmission rod extends into the furnace through the hole reserved on the right side wall of the high temperature furnace, and the right half extends into the hollow guide hole of the guide cylinder Among them, the guide cylinder is supported and fixed on the deformation test frame by the guide cylinder;

变形传感器测试杆,其测试端与所述形变传递杆的右端部接触,所述变形传感器测试杆在变形传感器主体中做相对滑动;Deformation sensor test rod, its test end is in contact with the right end of the deformation transmission rod, and the deformation sensor test rod is relatively slid in the deformation sensor main body;

变形传感器主体,其穿过形变测试框架的右肢框上设置的套箍中,并通过紧固螺钉固定。The main body of the deformation sensor passes through the hoop provided on the right limb frame of the deformation test frame, and is fixed by fastening screws.

进一步地,所述形变传递杆伸出导向筒的右端部设置有限位挡板。Further, the right end of the deformation transmission rod protruding from the guide cylinder is provided with a limit baffle.

进一步地,所述形变传递杆与试件接触的左端部为半球形,与试件形成点接触,右端部与变形传感器测试杆接触的面为平面;所述变形传感器测试杆与形变传递杆右端部接触的测试端也为半球形。Further, the left end of the deformation transmission rod in contact with the test piece is hemispherical, forming a point contact with the test piece, and the surface of the right end in contact with the deformation sensor test rod is a plane; the deformation sensor test rod and the right end of the deformation transmission rod The test end of the external contact is also hemispherical.

进一步地,所述变形传感器测试杆和变形传感器主体构成变形传感器,用于测试试件高温膨胀产生的变形值。Further, the deformation sensor test rod and the deformation sensor main body constitute a deformation sensor, which is used to test the deformation value caused by the high temperature expansion of the test piece.

进一步地,所述压头、试件、形变传递杆和变形传感器的轴向中心处于同一直线上。Further, the axial centers of the indenter, the test piece, the deformation transmission rod and the deformation sensor are on the same straight line.

进一步地,该测试装置还包括降温单元,所述降温单元包括:Further, the test device also includes a cooling unit, and the cooling unit includes:

内循环管,分布于所述形变测试框架、压头箍板和导向筒支撑中;The internal circulation pipe is distributed in the deformation test frame, the pressure head hoop plate and the guide cylinder support;

冷水机,通过出水管和回水管与内循环管连接。The chiller is connected to the internal circulation pipe through the outlet pipe and the return pipe.

进一步地,所述控制单元包括控制器和与控制器连接的计算机;所述控制器还与第一温度传感器、变形传感器、冷水机和高温炉连接。Further, the control unit includes a controller and a computer connected to the controller; the controller is also connected to the first temperature sensor, deformation sensor, chiller and high temperature furnace.

与现有技术相比,本实用新型具有以下优点:Compared with the prior art, the utility model has the following advantages:

1、本实用新型的形变传递杆与试件接触的左端部为半球形,与试件形成点接触,变形传感器测试杆与形变传递杆接触的测试端也为半球形,与形变传递杆形成点接触,形变传递杆和变形传感器测试杆端部球头的设置和导向筒的设置,可以降低热变形测试值的误差,提高测试结果准确性。1. The left end of the deformation transmission rod of the utility model in contact with the test piece is hemispherical, forming a point contact with the test piece, and the test end of the deformation sensor test rod in contact with the deformation transmission rod is also hemispherical, forming a point contact with the deformation transmission rod. The setting of the ball head at the end of the contact and deformation transmission rod and the deformation sensor test rod and the setting of the guide cylinder can reduce the error of the thermal deformation test value and improve the accuracy of the test result.

2、防爆网的设置避免了混凝土试件高温爆裂时碎块对高温炉内壁带来的冲击破坏,提高了高温炉的使用寿命。2. The setting of the explosion-proof net avoids the impact damage caused by the fragments on the inner wall of the high-temperature furnace when the concrete specimen bursts at high temperature, and improves the service life of the high-temperature furnace.

3、降温单元可降低温度对热应变测试单元的影响,提高测试精度和试验效率。3. The cooling unit can reduce the influence of temperature on the thermal strain test unit, and improve the test accuracy and test efficiency.

4、本实用新型的火灾高温中混凝土热应变测试装置,设计合理、结构简单、环保高效,即可测试升温条件下混凝土试件的热应变和爆裂应变值,也可测试恒温条件下的蠕变变形值,适用范围广。4. The thermal strain test device for concrete in fire and high temperature of the present utility model has reasonable design, simple structure, environmental protection and high efficiency. It can test the thermal strain and burst strain value of the concrete specimen under the condition of elevated temperature, and can also test the creep under the condition of constant temperature. Deformation value, wide application range.

附图说明Description of drawings

为了更清楚地说明本实用新型实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,对于本领域普通技术人员而言,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Other drawings can also be obtained based on these drawings.

图1是本实用新型实施例一的火灾高温中混凝土热应变测试装置的俯视结构示意图;Fig. 1 is a top view structural schematic diagram of a concrete thermal strain test device in a high temperature fire according to Embodiment 1 of the present utility model;

图2是本实用新型实施例二的火灾高温中混凝土热应变测试装置的俯视结构示意图。Fig. 2 is a top view structural schematic diagram of the concrete thermal strain test device in high temperature fire according to the second embodiment of the utility model.

图中序号所代表的含义为:1.形变测试框架,2.内循环管,3.压头箍板,4.压头,5.高温炉,6.防爆网,7.第一温度传感器,8.试件,9.炉膛,10.形变传递杆,11.导向筒支撑,12.导向筒,13.变形传感器测试杆,14.紧固螺钉,15.套箍,16.变形传感器主体,17.流体泵,18.电磁阀,19.流量计,20.出水管,21.炉门,22.冷水机,23.回水管,24.第二温度传感器,25.控制器,26.计算机,27.限位挡板。The meanings represented by the serial numbers in the figure are: 1. Deformation test frame, 2. Internal circulation pipe, 3. Indenter hoop, 4. Indenter, 5. High temperature furnace, 6. Explosion-proof net, 7. First temperature sensor, 8. Test piece, 9. Furnace, 10. Deformation transmission rod, 11. Guide cylinder support, 12. Guide cylinder, 13. Deformation sensor test rod, 14. Fastening screw, 15. Ferrule, 16. Deformation sensor main body, 17. Fluid pump, 18. Solenoid valve, 19. Flow meter, 20. Outlet pipe, 21. Furnace door, 22. Chiller, 23. Return pipe, 24. Second temperature sensor, 25. Controller, 26. Computer , 27. Limit baffle.

具体实施方式Detailed ways

为了使本技术领域的人员更好地理解本实用新型中的技术方案,下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本实用新型一部分实施例,而不是全部的实施例。In order to enable those skilled in the art to better understand the technical solution in the utility model, the technical solution in the utility model embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the utility model embodiment. Obviously, The described embodiments are only some of the embodiments of the present utility model, but not all of them.

实施例一Embodiment one

如图1所示,本实施例的一种火灾高温中混凝土热应变测试装置,包括:As shown in Figure 1, a kind of concrete thermal strain test device in the fire high temperature of the present embodiment comprises:

形变测试框架1,用于支撑其他单元;Deformation test frame 1, used to support other units;

火灾模拟单元,用于模拟火灾高温,其设置在形变测试框架1的内部,火灾模拟单元的内部放置有试件8;The fire simulation unit is used to simulate the high temperature of fire, which is arranged inside the deformation test frame 1, and the test piece 8 is placed inside the fire simulation unit;

热应变测试单元,该单元分为两部分,分别是用于限制试件8运动的定位部和用于测试试件8热变形值的测量部,所述定位部固定在形变测试框架1的左肢框上,所述测量部固定在形变测试框架1的右肢框上,所述试件8的左端部与定位部接触,右端部与测量部接触;Thermal strain testing unit, the unit is divided into two parts, namely the positioning part for restricting the movement of the test piece 8 and the measuring part for testing the thermal deformation value of the test piece 8, the positioning part is fixed on the left side of the deformation test frame 1 On the limb frame, the measuring part is fixed on the right limb frame of the deformation test frame 1, the left end of the test piece 8 is in contact with the positioning part, and the right end is in contact with the measuring part;

降温单元,用于降低温度对热应变测试单元的影响,提高测试精度;以及The cooling unit is used to reduce the influence of temperature on the thermal strain test unit and improve the test accuracy; and

控制单元,用于接收所述热应变测试单元传递的热变形信号、火灾模拟单元传递的温度信号和降温单元传递的温度、流量信号,并实现对火灾模拟单元和降温单元的控制。The control unit is used to receive the thermal deformation signal transmitted by the thermal strain testing unit, the temperature signal transmitted by the fire simulation unit, and the temperature and flow signal transmitted by the cooling unit, and realize the control of the fire simulation unit and the cooling unit.

作为优选地,火灾模拟单元包括高温炉5、防爆网6、至少一支第一温度传感器7和炉门21;所述高温炉5包括耐火材料制成的内壁、内壁中设置的加热管、隔热材料中壁、保温材料填充层和钢制外壁等。防爆网6安装在高温炉5炉体内壁的内侧,由耐火钢板经预留均匀分布的导热孔制成,用以防止混凝土试件8高温爆裂时碎块对高温炉5内壁带来的冲击破坏。第一温度传感器7为热电偶,布置在高温炉5炉体的侧壁,其测量端伸入高温炉5的炉膛9中,以测量炉膛9的温度。炉门21与形变测试框架1不在同一水平高度布置,以便炉门21顺利开合,炉门21的大小应以适于放置试件8为宜。Preferably, the fire simulation unit includes a high-temperature furnace 5, an explosion-proof net 6, at least one first temperature sensor 7 and a furnace door 21; the high-temperature furnace 5 includes an inner wall made of a refractory material, a heating pipe arranged in the inner wall, a Thermal material middle wall, insulation material filling layer and steel outer wall, etc. The explosion-proof net 6 is installed on the inner side of the inner wall of the high-temperature furnace 5, and is made of refractory steel plates with uniformly distributed heat conduction holes, so as to prevent the impact damage caused by the fragments on the inner wall of the high-temperature furnace 5 when the concrete specimen 8 bursts at high temperature . The first temperature sensor 7 is a thermocouple arranged on the side wall of the furnace body of the high temperature furnace 5 , and its measuring end extends into the furnace chamber 9 of the high temperature furnace 5 to measure the temperature of the furnace chamber 9 . The furnace door 21 and the deformation test frame 1 are not arranged at the same level, so that the furnace door 21 can be opened and closed smoothly, and the size of the furnace door 21 should be suitable for placing the test piece 8.

作为优选地,热应变测试单元的定位部包括压头箍板3和压头4,测量部包括形变传递杆10、变形传感器测试杆13和变形传感器主体16。压头箍板3的左端部固定在形变测试框架1的左肢框上,右端部嵌箍压头4,压头4通过高温炉5左侧壁预留的洞口伸入炉膛9中,压头4的右端部与试件8的左端部接触,试件8的右端部与形变传递杆10的左端部接触,形变传递杆10的左半部通过高温炉5右侧壁预留的洞口伸入炉膛9中,形变传递杆10的右半部伸入导向筒12中空的导向孔中,导向筒12通过导向筒支撑11固定于形变测试框架1上。形变传递杆10的右端部与变形传感器测试杆13的测试端接触,变形传感器测试杆13的左半部可在导向筒12的导向孔中滑动,变形传感器测试杆13的右半部可在变形传感器主体16中做相对滑动,变形传感器主体16穿过形变测试框架1的右肢框上设置的套箍15中,并通过紧固螺钉14固定。Preferably, the positioning part of the thermal strain test unit includes an indenter hoop 3 and an indenter 4 , and the measuring part includes a deformation transmission rod 10 , a deformation sensor test rod 13 and a deformation sensor main body 16 . The left end of the indenter hoop plate 3 is fixed on the left limb frame of the deformation test frame 1, and the right end is embedded with an indenter 4. The indenter 4 extends into the furnace 9 through the hole reserved on the left side wall of the high-temperature furnace 5, and the indenter The right end of 4 is in contact with the left end of the test piece 8, the right end of the test piece 8 is in contact with the left end of the deformation transmission rod 10, and the left half of the deformation transmission rod 10 extends through the hole reserved on the right side wall of the high temperature furnace 5. In the furnace 9 , the right half of the deformation transmission rod 10 extends into the hollow guide hole of the guide cylinder 12 , and the guide cylinder 12 is fixed on the deformation test frame 1 through the guide cylinder support 11 . The right end of deformation transmission rod 10 is in contact with the test end of deformation sensor test rod 13, and the left half of deformation sensor test rod 13 can slide in the guide hole of guide cylinder 12, and the right half of deformation sensor test rod 13 can be deformed. The sensor main body 16 slides relative to each other, and the deformation sensor main body 16 passes through the hoop 15 provided on the right limb frame of the deformation test frame 1, and is fixed by the fastening screw 14.

导向筒12的导向孔内部光滑,对形变传递杆10和变形传感器测试杆13具有支撑作用,但是不会阻碍形变传递杆10和变形传感器测试杆13的自由滑动。The inside of the guide hole of the guide cylinder 12 is smooth, which supports the deformation transmission rod 10 and the deformation sensor test rod 13, but does not hinder the free sliding of the deformation transmission rod 10 and the deformation sensor test rod 13.

形变传递杆10与试件8接触的左端部为半球形,与试件8形成点接触,右端部与变形传感器测试杆13接触的面为平面;变形传感器测试杆13与形变传递杆10右端部接触的测试端也为半球形。形变传递杆10和变形传感器测试杆13端部球头的设置和导向筒12的设置,可以降低热变形测试值的误差。The left end of the deformation transmission rod 10 in contact with the test piece 8 is hemispherical, forming a point contact with the test piece 8, and the surface where the right end contacts the deformation sensor test rod 13 is a plane; the deformation sensor test rod 13 and the right end of the deformation transmission rod 10 The test end of the contact is also hemispherical. The setting of the ball head at the end of the deformation transmission rod 10 and the deformation sensor test rod 13 and the setting of the guide cylinder 12 can reduce the error of the thermal deformation test value.

压头箍板3的材质为耐火钢,压头4的材质为碳化硅,形变传递杆10的材质为耐火陶瓷。The material of the pressure head hoop plate 3 is refractory steel, the material of the pressure head 4 is silicon carbide, and the material of the deformation transmission rod 10 is refractory ceramics.

变形传感器测试杆13和变形传感器主体16构成变形传感器,用于测试试件8高温膨胀产生的变形值。在本实施例中变形传感器可采用位移计。The deformation sensor test rod 13 and the deformation sensor main body 16 constitute a deformation sensor for testing the deformation value of the test piece 8 caused by high temperature expansion. In this embodiment, the deformation sensor can be a displacement meter.

压头4、试件8、形变传递杆10和变形传感器的轴向中心处于同一直线上,进一步降低热变形测试值的误差。The axial centers of the indenter 4, the test piece 8, the deformation transmission rod 10 and the deformation sensor are on the same straight line, further reducing the error of the thermal deformation test value.

作为优选地,降温单元包括分布于所述形变测试框架1、压头箍板3和导向筒支撑11中的内循环管2,与内循环管2连接的出水管20和回水管23,以及与出水管20和回水管23连接的冷水机22,冷水机22包括流体泵17、电磁阀18、流量计19和第二温度传感器24,通过流体泵17、压缩机及温控仪表等实现对循环水的温度控制。As preferably, the cooling unit includes the internal circulation pipe 2 distributed in the deformation test frame 1, the pressure head hoop plate 3 and the guide cylinder support 11, the outlet pipe 20 and the return pipe 23 connected with the internal circulation pipe 2, and the The chiller 22 connected by the water outlet pipe 20 and the return pipe 23, the chiller 22 includes a fluid pump 17, a solenoid valve 18, a flow meter 19 and a second temperature sensor 24, and the circulation is realized through the fluid pump 17, a compressor and a temperature control instrument, etc. Water temperature control.

作为优选地,控制单元包括控制器25和与控制器25连接的计算机26,高温炉5和冷水机22通过电缆与控制器25连接,第一温度传感器7、变形传感器主体16和冷水机22通过数据线与控制器25连接。第一温度传感器7将高温炉5内温度信号传递给控制器25,变形传感器测试杆13和变形传感器主体16组成的变形传感器将试件8产生的热变形信号传递给控制器25,冷水机22将管道内循环水的温度、流量等信号传递给控制器25,控制器25对数据信号进行转换后传递给计算机26,计算机26通过软件进行数据的实时显示、保存和后期处理分析等。As preferably, the control unit includes a controller 25 and a computer 26 connected to the controller 25, the high-temperature furnace 5 and the chiller 22 are connected to the controller 25 through cables, and the first temperature sensor 7, the deformation sensor body 16 and the chiller 22 pass through The data line is connected with the controller 25 . The first temperature sensor 7 transmits the temperature signal in the high-temperature furnace 5 to the controller 25, and the deformation sensor composed of the deformation sensor test rod 13 and the deformation sensor main body 16 transmits the thermal deformation signal generated by the test piece 8 to the controller 25, and the chiller 22 The temperature, flow and other signals of the circulating water in the pipeline are transmitted to the controller 25. The controller 25 converts the data signal and transmits it to the computer 26. The computer 26 performs real-time display, storage and post-processing analysis of the data through software.

本实施例的火灾高温中混凝土热应变测试装置的使用方法如下:The method of using the concrete thermal strain test device in the fire high temperature of the present embodiment is as follows:

步骤S101,打开炉门21,安放试件8,使试件8的轴心与压头4的轴心对应。Step S101 , open the furnace door 21 and place the test piece 8 so that the axis of the test piece 8 corresponds to the axis of the indenter 4 .

步骤S102,安装形变传递杆10于导向筒12中,变形传感器主体16于套箍15中,压紧变形传感器测试杆13,带动形变传递杆10的左端球头接触试件8的右端部。Step S102, install the deformation transmission rod 10 in the guide cylinder 12, the deformation sensor body 16 in the ferrule 15, press the deformation sensor test rod 13, and drive the left end ball of the deformation transmission rod 10 to contact the right end of the test piece 8.

步骤S103,打开计算机26以及控制单元,通过计算机26控制软件显示的变形值确保变形测试组件间接触良好,旋紧紧固螺钉14,将变形传感器主体16固定在套箍15内。Step S103, turn on the computer 26 and the control unit, use the deformation value displayed by the computer 26 control software to ensure good contact between the deformation test components, tighten the fastening screw 14, and fix the deformation sensor body 16 in the ferrule 15.

步骤S104,关闭炉门21,由计算机26的控制软件按设定的程序控制试验进程,当爆裂发生时停止试验,保存数据,关闭计算机26、冷水机22等。Step S104, close the furnace door 21, control the test process by the control software of the computer 26 according to the set program, stop the test when a burst occurs, save the data, and close the computer 26, chiller 22, etc.

步骤S105,待高温炉5自然冷却后取出试件8。Step S105, taking out the test piece 8 after the high temperature furnace 5 cools down naturally.

实施例二Embodiment two

如图2所示,本实施例与实施例一的区别在于,形变传递杆10伸出导向筒12的右端部设置有限位挡板27,限位挡板27可以避免形变传递杆10因伸入炉膛9内过多后不便取出,甚至易于被试件8撞断,且限位挡板27增大了与变形传感器测试杆13的测试端的接触面积,因此,在满足变形测试需求的条件下更易于定位操作。其他具体实施方式与实施一相同,此处不再重复赘述。As shown in Figure 2, the difference between this embodiment and Embodiment 1 is that the right end of the deformation transmission rod 10 protruding from the guide cylinder 12 is provided with a limit baffle 27, and the limit baffle 27 can prevent the deformation transmission rod 10 from being stretched into Too much in the furnace 9 is inconvenient to take out, and it is even easy to be broken by the test piece 8, and the limit baffle 27 increases the contact area with the test end of the deformation sensor test rod 13. Easy to locate and operate. Other specific implementation manners are the same as Embodiment 1, and will not be repeated here.

上述仅为本实用新型示意性的具体实施方式,并非用以限定本实用新型的范围,任何本领域的技术人员在不脱离本实用新型构思和原理的前提下,可对上述实施例进行多种变化、修改、替换和变型。比如实施例一中由变形传感器测试杆13和变形传感器主体16组成的位移计式变形传感器可由引伸计代替;此外,改变装置的尺寸或布置方式,如将该装置逆时针转动90度进行测试将获得更理想的效果等均可构成本实用新型的一个具体实施例,在此不一一详述。The above are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any person skilled in the art can make various modifications to the above-mentioned embodiments without departing from the concept and principle of the present utility model. Changes, Modifications, Substitutions and Variations. Such as the displacement gauge type deformation sensor that is made up of deformation sensor test rod 13 and deformation sensor main body 16 in embodiment one can be replaced by extensometer; In addition, change the size or layout of device, as this device rotates 90 degrees counterclockwise to test will Obtaining more ideal effects and the like can constitute a specific embodiment of the present utility model, which will not be described in detail here.

Claims (10)

1.一种火灾高温中混凝土热应变测试装置,其特征在于,包括:1. A concrete thermal strain test device in fire high temperature, characterized in that it comprises: 形变测试框架;Deformation test frame; 火灾模拟单元,其设置在形变测试框架的内部,用于模拟火灾高温,所述火灾模拟单元的内部放置有试件;A fire simulation unit, which is arranged inside the deformation test frame, is used to simulate the high temperature of a fire, and a test piece is placed inside the fire simulation unit; 热应变测试单元,分为用于限制试件运动的定位部和用于测试试件热变形值的测量部,所述定位部和测量部相对固定在所述形变测试框架框体上,所述试件的左右端部分别与所述定位部和测量部相接触;以及The thermal strain test unit is divided into a positioning part for restricting the movement of the test piece and a measuring part for testing the thermal deformation value of the test piece, the positioning part and the measuring part are relatively fixed on the deformation test frame body, the The left and right ends of the test piece are respectively in contact with the positioning part and the measuring part; and 控制单元,用于接收所述热应变测试单元传递的热变形信号和火灾模拟单元传递的温度信号,并实现对火灾模拟单元的控制。The control unit is used to receive the thermal deformation signal transmitted by the thermal strain testing unit and the temperature signal transmitted by the fire simulation unit, and realize the control of the fire simulation unit. 2.根据权利要求1所述的火灾高温中混凝土热应变测试装置,其特征在于,所述火灾模拟单元包括:2. The concrete thermal strain test device in fire high temperature according to claim 1, characterized in that, the fire simulation unit comprises: 高温炉;High temperature furnace; 防爆网,其安装在所述高温炉炉体内壁的内侧;explosion-proof net, which is installed on the inside of the inner wall of the high-temperature furnace; 至少一支第一温度传感器,布置在所述高温炉炉体的侧壁,其测量端伸入高温炉的炉膛中;以及炉门。At least one first temperature sensor is arranged on the side wall of the high-temperature furnace body, and its measuring end extends into the hearth of the high-temperature furnace; and a furnace door. 3.根据权利要求2所述的火灾高温中混凝土热应变测试装置,其特征在于,所述防爆网由耐火钢板经预留均匀分布的导热孔制成。3. The thermal strain test device for concrete under fire and high temperature according to claim 2, characterized in that the explosion-proof net is made of refractory steel plate with reserved evenly distributed heat conduction holes. 4.根据权利要求2所述的火灾高温中混凝土热应变测试装置,其特征在于,所述热应变测试单元的定位部包括压头箍板和压头;4. The concrete thermal strain testing device in fire high temperature according to claim 2, characterized in that, the positioning part of the thermal strain testing unit comprises an indenter hoop plate and an indenter; 压头箍板,其左端部固定在所述形变测试框架的左肢框上,右端部嵌箍压头;Indenter hoop plate, its left end is fixed on the left limb frame of the deformation test frame, and the right end is embedded with an indenter; 压头,通过高温炉左侧壁预留的洞口伸入炉膛中,所述压头的右端部与试件的左端部接触;The indenter extends into the furnace through the hole reserved on the left side wall of the high-temperature furnace, and the right end of the indenter is in contact with the left end of the test piece; 所述热应变测试单元的测量部包括形变传递杆、变形传感器测试杆和变形传感器主体;The measuring part of the thermal strain testing unit includes a deformation transmission rod, a deformation sensor test rod and a deformation sensor main body; 形变传递杆,其左端部与试件的右端部接触,所述形变传递杆的左半部通过高温炉右侧壁预留的洞口伸入炉膛中,右半部伸入导向筒中空的导向孔中,所述导向筒通过导向筒支撑固定于形变测试框架上;The deformation transmission rod, the left end of which is in contact with the right end of the test piece, the left half of the deformation transmission rod extends into the furnace through the hole reserved on the right side wall of the high temperature furnace, and the right half extends into the hollow guide hole of the guide cylinder Among them, the guide cylinder is supported and fixed on the deformation test frame by the guide cylinder; 变形传感器测试杆,其测试端与所述形变传递杆的右端部接触,所述变形传感器测试杆在变形传感器主体中做相对滑动;Deformation sensor test rod, its test end is in contact with the right end of the deformation transmission rod, and the deformation sensor test rod is relatively slid in the deformation sensor main body; 变形传感器主体,其穿过形变测试框架的右肢框上设置的套箍中,并通过紧固螺钉固定。The main body of the deformation sensor passes through the hoop provided on the right limb frame of the deformation test frame, and is fixed by fastening screws. 5.根据权利要求4所述的火灾高温中混凝土热应变测试装置,其特征在于,所述形变传递杆伸出导向筒的右端部设置有限位挡板。5 . The thermal strain test device for concrete under fire and high temperature according to claim 4 , wherein a limiting baffle is provided at the right end of the deformation transmission rod protruding from the guide cylinder. 5 . 6.根据权利要求4所述的火灾高温中混凝土热应变测试装置,其特征在于,所述形变传递杆与试件接触的左端部为半球形,与试件形成点接触,右端部与变形传感器测试杆接触的面为平面;所述变形传感器测试杆与形变传递杆右端部接触的测试端也为半球形。6. The thermal strain test device for concrete in fire and high temperature according to claim 4, characterized in that, the left end of the deformation transmission rod in contact with the test piece is hemispherical, forms a point contact with the test piece, and the right end is in contact with the deformation sensor The contact surface of the test rod is plane; the test end of the deformation sensor test rod in contact with the right end of the deformation transmission rod is also hemispherical. 7.根据权利要求4所述的火灾高温中混凝土热应变测试装置,其特征在于,所述变形传感器测试杆和变形传感器主体构成变形传感器,用于测试试件高温膨胀产生的变形值。7. The thermal strain test device for concrete under fire and high temperature according to claim 4, wherein the deformation sensor test rod and the deformation sensor main body constitute a deformation sensor for testing the deformation value caused by the high temperature expansion of the specimen. 8.根据权利要求7所述的火灾高温中混凝土热应变测试装置,其特征在于,所述压头、试件、形变传递杆和变形传感器的轴向中心处于同一直线上。8 . The device for testing thermal strain of concrete under fire and high temperature according to claim 7 , wherein the axial centers of the indenter, the test piece, the deformation transmission rod and the deformation sensor are on the same straight line. 9.根据权利要求7所述的火灾高温中混凝土热应变测试装置,其特征在于,该测试装置还包括降温单元,所述降温单元包括:9. The concrete thermal strain test device in fire high temperature according to claim 7, characterized in that, the test device also comprises a cooling unit, and the cooling unit comprises: 内循环管,分布于所述形变测试框架、压头箍板和导向筒支撑中;The internal circulation pipe is distributed in the deformation test frame, the pressure head hoop plate and the guide cylinder support; 冷水机,通过出水管和回水管与内循环管连接。The chiller is connected to the internal circulation pipe through the outlet pipe and the return pipe. 10.根据权利要求9所述的火灾高温中混凝土热应变测试装置,其特征在于,所述控制单元包括控制器和与控制器连接的计算机;所述控制器还与第一温度传感器、变形传感器、冷水机和高温炉连接。10. the concrete thermal strain test device in the high temperature of fire according to claim 9, is characterized in that, described control unit comprises controller and the computer that is connected with controller; Described controller is also connected with first temperature sensor, deformation sensor , chiller and high temperature furnace connection.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110068510A (en) * 2019-05-21 2019-07-30 郑州大学 Concrete heat stress test device in a kind of high temperature of fire
CN110068301A (en) * 2019-05-21 2019-07-30 郑州大学 Concrete heat strain detection testing device in a kind of high temperature of fire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110068510A (en) * 2019-05-21 2019-07-30 郑州大学 Concrete heat stress test device in a kind of high temperature of fire
CN110068301A (en) * 2019-05-21 2019-07-30 郑州大学 Concrete heat strain detection testing device in a kind of high temperature of fire
CN110068301B (en) * 2019-05-21 2024-06-18 郑州大学 Concrete thermal strain testing arrangement in conflagration high temperature
CN110068510B (en) * 2019-05-21 2024-07-26 郑州大学 A device for testing thermal stress of concrete in high temperature fire

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