CN110608975A - A gas content testing device and its testing method and application - Google Patents
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Abstract
本发明公开了一种气体含量测试装置及其测试方法和应用。本发明的一种气体含量测试装置，包括单作用气缸、压力传感器和驱动装置；单作用气缸的压力室设有与其内部相通的进气口和出气口，且进气口和出气口均设有打开或关闭其的阀门，进气口通过进气管与气源相连通，压力传感器设置在压力室内用于检测其内部压力，驱动装置与单作用气缸的活塞杆传动连接，以驱动活塞杆沿单作用气缸的缸筒运动。本发明的测试装置不需要水等其他液体介质参与，通过电机控制气缸活塞杆的运动能够实时保证进气端和出气端的压力平衡，测试结果简单明了。本发明的测试方法直接可靠，可行性高，计量精度高，稳定性好，测试成本低廉。
The invention discloses a gas content testing device, a testing method and an application thereof. A gas content testing device of the present invention comprises a single-acting cylinder, a pressure sensor and a driving device; the pressure chamber of the single-acting cylinder is provided with an air inlet and an air outlet communicating with the inside thereof, and both the air inlet and the air outlet are provided with Open or close its valve, the air inlet is connected to the air source through the air inlet pipe, the pressure sensor is set in the pressure chamber to detect its internal pressure, and the driving device is connected with the piston rod of the single-acting cylinder to drive the piston rod along the single-acting cylinder. The cylinder barrel of the acting cylinder moves. The test device of the present invention does not require the participation of other liquid media such as water, and the movement of the piston rod of the cylinder is controlled by the motor to ensure real-time pressure balance between the air inlet end and the air outlet end, and the test results are simple and clear. The test method of the invention is direct and reliable, has high feasibility, high measurement accuracy, good stability and low test cost.
Description
技术领域technical field
本发明涉及气体测试技术领域，尤其涉及一种气体含量测试装置及其测试方法和应用。The invention relates to the technical field of gas testing, in particular to a gas content testing device, a testing method and an application thereof.
背景技术Background technique
目前，很多气体的体积测量多采用容积法原理中的排水法、pVT法原理中的一种或几种结合的方式进行有效的量值传递。但是对于某些极易溶于水的气体，或者是测试环境比较艰难的条件下，却很难实现准确的检测待侧气体的气量。At present, the volume measurement of many gases adopts one or a combination of the drainage method in the principle of volumetric method and the principle of pVT method for effective value transmission. However, for some gases that are very soluble in water, or the test environment is relatively difficult, it is difficult to accurately detect the gas volume of the side gas.
发明内容Contents of the invention
本发明的目的在于，针对现有技术的上述不足，提出一种气体含量测试装置及其测试方法和应用。The object of the present invention is to propose a gas content testing device and its testing method and application in view of the above-mentioned deficiencies of the prior art.
本发明的一种气体含量测试装置，包括单作用气缸、压力传感器和驱动装置；所述单作用气缸的压力室设有与其内部相通的进气口和出气口，且所述进气口和出气口均设有打开或关闭其的阀门，所述进气口通过进气管与气源相连通，所述压力传感器设置在所述压力室内用于检测其内部压力，所述驱动装置与所述单作用气缸的活塞杆传动连接，以驱动所述活塞杆沿所述单作用气缸的缸筒运动。A gas content testing device of the present invention comprises a single-acting cylinder, a pressure sensor and a driving device; the pressure chamber of the single-acting cylinder is provided with an air inlet and an air outlet communicating with the inside thereof, and the air inlet and the outlet are The air ports are all equipped with valves to open or close them, the air inlet is connected with the air source through the air intake pipe, the pressure sensor is set in the pressure chamber to detect its internal pressure, the driving device is connected with the single The piston rod of the acting cylinder is connected in transmission to drive the piston rod to move along the cylinder barrel of the single-acting cylinder.
优选的，所述驱动装置包括滚动丝杠和电机，所述活塞杆的一端与所述滚珠丝杠的螺母座连接固定，所述电机与所述丝杆传动连接，驱动所述丝杆转动，带动所述活塞杆沿所述单作用气缸的缸筒运动。Preferably, the driving device includes a rolling screw and a motor, one end of the piston rod is connected and fixed to the nut seat of the ball screw, and the motor is connected to the screw to drive the screw to rotate, Drive the piston rod to move along the cylinder barrel of the single-acting cylinder.
优选的，所述阀门均为电磁阀。Preferably, the valves are all electromagnetic valves.
优选的，所述进气口和出气口为一个出口，所述阀门为二位三通阀，所述二位三通阀的一个通口与所述压力室内部连通，一个通口为进气口，且与气源连通，剩下一个通口为出气口，且与外部相通。Preferably, the air inlet and the air outlet are an outlet, the valve is a two-position three-way valve, one port of the two-position three-way valve communicates with the inside of the pressure chamber, and one port is the air intake port. One port is connected with the air source, and the remaining one is the air outlet, which is connected with the outside.
优选的，所述二位三通阀为电磁阀。Preferably, the two-position three-way valve is a solenoid valve.
优选的，还包括控制器，所述控制器分别与所述压力传感器、所述阀门和电机电连接。Preferably, a controller is further included, and the controller is electrically connected to the pressure sensor, the valve and the motor respectively.
一种页岩解吸气含量测试装置，包括解吸气分离装置和上述的气体含量测试装置，所述解吸气分离装置的解吸气出口通过软管与所述进气口连通。A shale desorption gas content testing device, comprising a desorption gas separation device and the above-mentioned gas content testing device, the desorption gas outlet of the desorption gas separation device communicates with the air inlet through a hose.
一种气体含量测试方法，使用上述的气体含量测试装置，具体步骤如下：A gas content testing method, using the above-mentioned gas content testing device, the specific steps are as follows:
S1：所述缸筒的横截面面积已知为S，记录所述活塞杆初始位置L1，所述压力传感器检测压力室内初始压力P1；S1: The cross-sectional area of the cylinder is known as S, the initial position L 1 of the piston rod is recorded, and the pressure sensor detects the initial pressure P 1 in the pressure chamber;
S2：打开所述进气口，气源向所述压力室充气一段时间T，关闭所述进气口，然后所述驱动装置带动所述活塞杆向远离缸筒底部的方向运动，至所述压力传感器检测压力室内压力P2＝P1，记录此时所述活塞杆位置L2，然后打开所述出气口将气体放出，且所述驱动装置带动所述活塞杆恢复原位，并关闭出气口，则T时间内气源的进气量V＝S×(L2-L1)；S2: Open the air inlet, the air source inflates the pressure chamber for a period of time T, close the air inlet, and then the driving device drives the piston rod to move away from the bottom of the cylinder to the The pressure sensor detects the pressure P 2 =P 1 in the pressure chamber, records the position L 2 of the piston rod at this time, then opens the gas outlet to release the gas, and the driving device drives the piston rod back to its original position, and closes the outlet. air port, then the air intake volume of the air source within T time period V=S×(L 2 -L 1 );
S3：再次打开所述进气口，重复步骤S2，即可测得所有未知气体的气量。S3: Open the air inlet again and repeat step S2 to measure the volume of all unknown gases.
本发明的一种气体含量测试装置不需要水等其他液体介质参与，通过电机控制气缸活塞杆的运动能够实时保证进气端和出气端的压力平衡，测试结果简单明了。本发明的测试方法直接可靠，可行性高，计量精度高，稳定性好，测试成本低廉。The gas content testing device of the present invention does not require the participation of other liquid media such as water, and the movement of the piston rod of the cylinder is controlled by the motor to ensure the pressure balance between the inlet and outlet ends in real time, and the test results are simple and clear. The test method of the invention is direct and reliable, has high feasibility, high measurement accuracy, good stability and low test cost.
附图说明Description of drawings
图1为本发明的一种气体含量测试装置的结构示意图；Fig. 1 is the structural representation of a kind of gas content testing device of the present invention;
图2为本发明的一种页岩解吸气含量测试装置。Fig. 2 is a test device for shale desorption gas content of the present invention.
1-单作用气缸；11-压力室；12-进气口；13-出气口；14-进气管；15-活塞杆；16-缸筒；2-压力传感器；3-驱动装置；31-电机；32-滚珠丝杠；321-螺母座；322-丝杆；4-阀门；5-控制器；6-解吸气分离装置。1-single-acting cylinder; 11-pressure chamber; 12-air inlet; 13-air outlet; 14-intake pipe; 15-piston rod; 16-cylinder barrel; 2-pressure sensor; 3-driving device; 31-motor ; 32-ball screw; 321-nut seat; 322-screw; 4-valve; 5-controller; 6-desorption gas separation device.
具体实施方式Detailed ways
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
如图1所示，本发明的一种气体含量测试装置，包括单作用气缸1、压力传感器2和驱动装置3；单作用气缸1的压力室11设有与其内部相通的进气口12和出气口13，且进气口12和出气口13均设有打开或关闭其的阀门4，进气口12通过进气管14与气源相连通，压力传感器2设置在压力室11内用于检测其内部压力，驱动装置3与单作用气缸1的活塞杆15传动连接，以驱动活塞杆15沿单作用气缸1的缸筒16运动。As shown in Figure 1, a kind of gas content testing device of the present invention comprises single-acting cylinder 1, pressure sensor 2 and driving device 3; Air port 13, and air inlet 12 and air outlet 13 are all provided with the valve 4 that opens or closes it, and air inlet 12 is connected with air source through air inlet pipe 14, and pressure sensor 2 is arranged in pressure chamber 11 and is used for detecting its Internal pressure, the driving device 3 is in transmission connection with the piston rod 15 of the single-acting cylinder 1 to drive the piston rod 15 to move along the cylinder barrel 16 of the single-acting cylinder 1 .
本发明的一种气体含量测试装置不需要水等其他液体介质参与，通过电机31控制气缸活塞杆15的运动能够实时保证进气端和出气端的压力平衡，测试结果简单明了。A gas content testing device of the present invention does not require the participation of other liquid media such as water, and the movement of the cylinder piston rod 15 is controlled by the motor 31 to ensure real-time pressure balance between the inlet and outlet ends, and the test results are simple and clear.
驱动装置3的结构有多种，在这里不做限定，在本实施例中，驱动装置3可以包括滚珠丝杠32和电机31，活塞杆15的一端与滚珠丝杠32的螺母座321连接固定，电机31与滚珠丝杠32的丝杆322传动连接，驱动丝杆322转动，带动活塞杆15沿单作用气缸1的缸筒16运动。There are various structures of the driving device 3, which are not limited here. In this embodiment, the driving device 3 may include a ball screw 32 and a motor 31, and one end of the piston rod 15 is connected and fixed to the nut seat 321 of the ball screw 32. , the motor 31 is in transmission connection with the screw 322 of the ball screw 32, drives the screw 322 to rotate, and drives the piston rod 15 to move along the cylinder barrel 16 of the single-acting cylinder 1.
在一种可实施的方式中，进气口12和出气口13可以为两个口子，进气口12和出气口13上的阀门4可以均为电磁阀。In an implementable manner, the air inlet 12 and the air outlet 13 may be two openings, and the valves 4 on the air inlet 12 and the air outlet 13 may be electromagnetic valves.
在另一种可实施的方式中，进气口12和出气口13可以为一个出口，阀门4为二位三通阀，二位三通阀的一个通口与压力室11内部连通，一个通口为进气口12，且与气源连通，剩下一个通口为出气口13，且与外部相通。二位三通阀可以为电磁阀。In another practicable manner, the air inlet 12 and the air outlet 13 can be an outlet, the valve 4 is a two-position three-way valve, one port of the two-position three-way valve communicates with the inside of the pressure chamber 11, and one port of the two-position three-way valve The mouth is the air inlet 12, and communicates with the air source, and the remaining one port is the air outlet 13, and communicates with the outside. The two-position three-way valve can be a solenoid valve.
还可以包括控制器5，控制器5分别与压力传感器2、阀门4和电机31电连接。在又控制器5时，测量气体的具体过程为：A controller 5 may also be included, and the controller 5 is electrically connected to the pressure sensor 2, the valve 4 and the motor 31 respectively. When controller 5 is used again, the specific process of measuring gas is:
S1：缸筒16的横截面面积已知为S，记录活塞杆15初始位置L1，压力传感器2检测压力室11内初始压力P1；S1: The cross-sectional area of the cylinder 16 is known as S, the initial position L 1 of the piston rod 15 is recorded, and the pressure sensor 2 detects the initial pressure P 1 in the pressure chamber 11;
S2：控制器5控制二位三通阀中为进气口12的一个通口打开，气源向压力室11充气一段时间T，控制器5控制二位三通阀中为进气口12的一个通口关闭，然后控制驱动装置3带动活塞杆15向远离缸筒16底部的方向运动，至压力压力传感器2检测压力室11内压力P2＝P1，记录此时活塞杆15位置L2，控制器5控制二位三通阀中为出气口13一个通口打开的将气体放出，且驱动装置3带动活塞杆15恢复原位，并关闭出气口13，则T时间内气源的进气量V＝S×(L2-L1)；S2: The controller 5 controls the opening of one port of the two-position three-way valve which is the air inlet 12, and the air source inflates the pressure chamber 11 for a period of time T, and the controller 5 controls the one of the two-position three-way valve which is the air inlet 12 One port is closed, and then the driving device 3 is controlled to drive the piston rod 15 to move away from the bottom of the cylinder 16 until the pressure sensor 2 detects the pressure P 2 =P 1 in the pressure chamber 11, and records the position L 2 of the piston rod 15 at this time , the controller 5 controls the one port of the two-position three-way valve to open the gas outlet 13 to release the gas, and the driving device 3 drives the piston rod 15 to return to the original position, and closes the gas outlet 13, then the gas source enters within T time Gas volume V=S×(L 2 -L 1 );
S3：控制器5再次控制二位三通阀中为进气口12的一个通口打开，重复步骤S2，即可测得所有未知气体的气量。S3: The controller 5 again controls the opening of one port of the two-position three-way valve, which is the air inlet 12, and repeats step S2 to measure the volume of all unknown gases.
页岩气由解吸气、残余气、损失气三个部分组成，其中解吸气量是利用解吸气含量测试装置，通过现场岩心样品进行解吸试验直接获得，因此，要有效地评价某地区的页岩储量，准确测试页岩含气量，必须提供一种能够准确测试页岩解吸气的方法和装置设备。Shale gas consists of three parts: desorbed gas, residual gas and lost gas. The amount of desorbed gas is directly obtained through the desorption test of on-site core samples using the desorbed gas content testing device. Therefore, it is necessary to effectively evaluate the shale gas in a certain area. To accurately test the gas content of shale, it is necessary to provide a method and device that can accurately test the desorbed gas of shale.
如图2所示，一种页岩解吸气含量测试装置，可以包括解吸气分离装置6和上述的气体含量测试装置，解吸气分离装置6的解吸气出口通过软管与进气口12连通。在这里解吸气分离装置6的解吸气为气体含量测试装置的气源。As shown in Figure 2, a kind of shale desorption gas content test device can comprise desorption gas separation device 6 and the above-mentioned gas content test device, the desorption gas outlet of desorption gas separation device 6 is connected with the intake air through a hose Port 12 is connected. Here, the desorbed gas from the desorbed gas separation device 6 is the gas source of the gas content testing device.
一种气体含量测试方法，使用上述的气体含量测试装置，具体步骤如下：A gas content testing method, using the above-mentioned gas content testing device, the specific steps are as follows:
S1：缸筒16的横截面面积已知为S，记录活塞杆15初始位置L1，压力传感器2检测压力室11内初始压力P1；S1: The cross-sectional area of the cylinder 16 is known as S, the initial position L 1 of the piston rod 15 is recorded, and the pressure sensor 2 detects the initial pressure P 1 in the pressure chamber 11;
S2：打开进气口12，气源向压力室11充气一段时间T，关闭进气口12，然后驱动装置3带动活塞杆15向远离缸筒16底部的方向运动，至压力压力传感器2检测压力室11内压力P2＝P1，记录此时活塞杆15位置L2，然后打开出气口13将气体放出，且驱动装置3带动活塞杆15恢复原位，并关闭出气口13，则T时间内气源的进气量V＝S×(L2-L1)；S2: Open the air inlet 12, the air source inflates the pressure chamber 11 for a period of time T, close the air inlet 12, and then the driving device 3 drives the piston rod 15 to move away from the bottom of the cylinder 16 until the pressure sensor 2 detects the pressure The pressure in the chamber 11 is P 2 =P 1 , record the position L 2 of the piston rod 15 at this time, then open the gas outlet 13 to release the gas, and the driving device 3 drives the piston rod 15 to return to the original position, and close the gas outlet 13, then T time Intake volume of internal air source V=S×(L 2 -L 1 );
S3：再次打开进气口12，重复步骤S2，即可测得所有未知气体的气量。S3: Open the air inlet 12 again, repeat step S2, and the volume of all unknown gases can be measured.
以上未涉及之处，适用于现有技术。What is not involved above is applicable to the prior art.
虽然已经通过示例对本发明的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本发明的范围，本发明所属技术领域的技术人员可以对所描述的具体实施例来做出各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的方向或者超越所附权利要求书所定义的范围。本领域的技术人员应该理解，凡是依据本发明的技术实质对以上实施方式所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围。Although some specific embodiments of the present invention have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, rather than for limiting the scope of the present invention. Various modifications or additions or similar substitutions can be made to the described specific embodiments without departing from the direction of the present invention or exceeding the scope defined by the appended claims. Those skilled in the art should understand that any modifications, equivalent replacements, improvements, etc. made to the above implementations based on the technical essence of the present invention shall be included in the protection scope of the present invention.
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