变温环境下SF6混合气体0.6 MPa压力特征曲线研究

doi:10.11985/2020.03.020

摘要/Abstract

摘要：

为了解在变温环境下,SF₆混合气体在压强为0.6 MPa的压力特征曲线,设计试验并测定了SF₆/N₂、SF₆/CF₄两种混合气体在SF₆不同体积分数下的压力特征曲线。设置实验室的温度变化范围为-30~40℃,准备检测器具及设备,分别配置SF₆体积占比为28%、30%、32%的两种混合气体,推导混合气体的状态方程。在试验中测出实际的温度和压力值,代入状态方程得到理论计算值,计算出相对误差,验证状态方程的适用性,绘制出变温环境下SF₆混合气体在0.6 MPa环境下压力特征曲线。经试验发现,在该曲线中压力与试验温度呈一定的线性关系,为SF₆混合气体制备以及相关的研发提供了理论依据。

关键词: SF₆混合气体, 变温环境, 压力特征曲线, 状态方程, 压力值

Abstract:

In order to understand the pressure characteristic curve of SF₆ mixed gas at pressure of 0.6 MPa under the condition of variable temperature, the pressure characteristic curves of SF₆/N₂ and SF₆/CF₄ are designed and measured. The temperature range of the laboratory is set to -30-40℃, and the testing instruments and equipment are prepared. The two mixed gases with SF₆ volume fraction of 28%, 30% and 32% are configured respectively, and the equation of state of the mixed gas is deduced. The actual temperature and pressure values are measured in the experiment, and the theoretical values are substituted into the equation of state to obtain the relative error. The applicability of the equation of state is verified, and the pressure characteristic curve of SF₆ mixed gas in the environment of 0.6 MPa is drawn. It is found that the pressure in this curve has a certain linear relationship with the experimental temperature, which provides a theoretical basis for the preparation of SF₆ mixture system and related research and development.

Key words: SF₆ mixed gas, variable temperature environment, pressure characteristic curve, equation of state, pressure value

中图分类号:

TE341

陆旭锋,陈雅蓝. 变温环境下SF₆混合气体0.6 MPa压力特征曲线研究[J]. 电气工程学报, 2020, 15(3): 150-154.

LU Xufeng,CHEN Yalan. Study on 0.6 MPa Pressure Characteristic Curve of SF₆ Mixed Gas in Variable Temperature Environment[J]. Journal of Electrical Engineering, 2020, 15(3): 150-154.

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参考文献 15

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设定温度/℃	实测温度/℃	实测压力值/MPa
20	19.84	0.599 9
-30	-29.64	0.501 2
-20	-19.35	0.531 6
-10	-9.05	0.543 1
0	-0.86	0.564 1
10	9.36	0.580 2
30	29.36	0.619 6
40	39.65	0.642 1

设定温度/℃	实测温度/℃	实测压力值/MPa
20	19.91	0.599 7
-30	-29.95	0.486 1
-20	-19.55	0.512 4
-10	-9.18	0.529 4
0	-0.12	0.560 9
10	9.86	0.593 6
30	29.64	0.614 5
40	39.78	0.643 3

设定温度/℃	实测温度/℃	实测压力值/MPa
20	19.78	0.599 8
-30	-29.84	0.499 5
-20	-19.64	0.524 4
-10	-9.67	0.538 9
0	-0.15	0.568 7
10	9.61	0.593 7
30	29.57	0.615 8
40	39.45	0.632 2

设定温度/℃	实测温度/℃	实测压力值/MPa
20	19.69	0.599 6
-30	-29.89	0.510 3
-20	-19.76	0.532 6
-10	-9.04	0.545 9
0	-0.93	0.564 2
10	9.63	0.579 5
30	29.58	0.620 6
40	39.66	0.641 3

设定温度/℃	实测温度/℃	实测压力值/MPa
20	19.76	0.599 7
-30	-29.46	0.493 6
-20	-19.59	0.520 8
-10	-9.26	0.536 8
0	-0.46	0.560 9
10	9.93	0.586 9
30	29.26	0.618 9
40	39.41	0.640 3

变温环境下SF₆混合气体0.6 MPa压力特征曲线研究

Study on 0.6 MPa Pressure Characteristic Curve of SF₆ Mixed Gas in Variable Temperature Environment

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参考文献 15

相关文章 5

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设定温度/℃	实测温度/℃	实测压力值/MPa
20	19.85	0.599 8
-30	-29.56	0.496 9
-20	-19.39	0.528 4
-10	-9.78	0.540 6
0	-0.59	0.566 9
10	9.63	0.590 1
30	29.45	0.619 7
40	39.92	0.639 7

数据情况	温度/℃	实测压力/MPa	压力理论计算值/MPa	相对误差(%)
初始状态	20.00	0.600 0		—
SF₆体积分数(28%)	-29.64	0.501 2	0.502 3	0.22
	-19.35	0.531 6	0.530 7	-0.17
	-9.05	0.543 1	0.544 9	0.33
	-0.86	0.564 1	0.561 1	-0.53
	9.36	0.580 2	0.583 6	0.59
	29.36	0.619 6	0.620 9	0.21
	39.65	0.642 1	0.643 9	0.28
SF₆体积分数(30%)	19.44	0.599 7	0.596 2	-0.58
	-29.95	0.486 1	0.483 9	-0.45
	-19.55	0.512 4	0.514 3	0.37
	-9.18	0.529 4	0.531 4	0.38
	-0.12	0.560 9	0.562 2	0.23
	9.86	0.593 6	0.590 0	-0.61
	29.64	0.614 5	0.616 8	0.37
	39.78	0.643 3	0.645 9	0.40
SF₆体积分数(32%)	-29.84	0.499 5	0.502 3	0.56
	-19.64	0.524 4	0.526 8	0.46
	-9.67	0.538 9	0.536 1	-0.52
	-0.15	0.568 7	0.564 7	-0.70
	9.61	0.593 7	0.596 7	0.51
	29.57	0.615 8	0.618 0	0.36
	39.45	0.632 2	0.634 9	0.43

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