阅读说明：本技术 一种用于燃烧法燃气热值测量装置的自动弹出装置 (Automatic popping device for combustion method gas heat value measuring device ) 是由 孙伟 王玉刚 于 2021-08-03 设计创作，主要内容包括：本发明涉及高准确度燃烧法燃气热值测量技术领域,涉及一种用于燃烧法燃气热值测量装置的自动弹出装置；本发明可实现配气系统自动化,减少手动插拔储气小球以及人员进入恒温室的次数,提高燃气热值测量的不确定度,减小误差；本弹出装置由单片机控制可以控制推杆推出的力度选择合适的力度避免不合的力度导致器材变形从而影响精度,此外推杆推出的数量也可以根据不同的受力点选择合适的伸出数量,也可以根据对象调整推杆推出的长度。(The invention relates to the technical field of high-accuracy combustion method fuel gas heat value measurement, in particular to an automatic popping device for a combustion method fuel gas heat value measuring device; the invention can realize the automation of the gas distribution system, reduce the times of manually plugging and unplugging the gas storage small ball and entering the thermostatic chamber by personnel, improve the uncertainty of the gas heat value measurement and reduce the error; the pop-up device can control the pushing force of the push rod to select the proper force under the control of the single chip microcomputer, so that the accuracy is prevented from being influenced by the deformation of the equipment caused by the improper force, the pushing quantity of the push rod can also be selected according to different stress points, and the pushing length of the push rod can also be adjusted according to an object.)

1. An automatic gas storage container ejection device for a combustion method gas calorific value measuring device comprises a device body (3), and is characterized in that the ejection device body (3) is arranged on a gas supply pipeline, and the gas supply pipeline is sequentially provided with a straight joint (2), an ejection device body (3), a pressure sensor (4), a mass flow controller (5) and a stop valve (6); the ejection device body (3) comprises a current detector (301), a push rod controller (303) and a push rod integral framework (304), and a gas supply pipeline penetrates through and clamps the ejection device body (3); the current detector (301) is fixed at one end of the push rod controller (303) through a flat gasket (302), the other end of the push rod controller (303) is fixed on the push rod integral frame (304), and an ejection piece is arranged in the integral frame (304); the automatic control device is used for receiving signals of the pressure sensor (4), realizing automatic ejection of the ejection piece and acting on the straight joint (2), and ejecting the gas storage small ball (1) from the gas pipeline.

2. The automatic ejection device for the combustion method gas calorific value measurement device according to claim 1, wherein the through joint (2) is used for connecting the gas storage small ball (1).

3. The automatic ejection device for the combustion method gas calorific value measuring device according to claim 1, wherein a mounting hole for a gas supply pipeline to pass through is formed in the centers of the current detector (301), the push rod controller (303) and the housing (3014).

4. The automatic ejection device for the combustion method gas heat value measuring device according to claim 1, wherein the ejection piece (3011), the coil (3013), the housing (3014), the spring (3016), the armature (3017) and the bearing ring (3018); a bearing ring (3018) is arranged in the shell (3014); the armature (3017) penetrates through the bearing ring (3018), one end, far away from the through joint (2), of the armature is connected with the inner wall of the shell (3014) through a spring (3016), and one end, facing the through joint (2), of the armature is connected with a push rod (3011); the shell (3014) is provided with a through hole for the push rod (3011) to extend out conveniently; a coil (3013) is arranged in the shell (3014).

5. The automatic ejection device for the combustion method gas calorific value measurement device according to claim 4, wherein a magnetism isolating ring (3012) is further arranged in the housing (3014).

6. The automatic ejection device for the combustion method gas calorific value measurement device according to claim 5, wherein a signal connector (3015) is arranged at one end of the housing (3014) far away from the through joint (2) and is used for being connected with the push rod controller (303).

7. The automatic ejection device for the combustion method gas calorific value measurement device according to claim 6, wherein the ejection member is provided in a plurality of numbers along a circumferential direction of the housing (3014).

8. The automatic ejection device for the combustion method gas calorific value measuring device according to claim 4, wherein the automatic control device comprises a programmable current source, a single chip microcomputer and an upper computer, an ejection piece, a push rod controller (303), a current detector (301), a programmable current source, a single chip microcomputer and a pressure sensor (4) which are electrically connected; the upper computer is connected with the single chip microcomputer and used for setting air pressure values, push rod (3011) values, current input settings and air pressure real-time monitoring instruments.

9. The automatic pop-up device for the combustion method gas heat value measuring device according to claim 8, wherein the pressure sensor (4) senses the gas pressure of the gas storage small ball (1), when a set pressure value is reached, a signal is output to the singlechip programmable current source, the programmable current source generates current, the current detector (301) judges the magnitude of the current and transmits the current to the push rod controller device; the signal of the push rod controller (303) is input into the ejecting piece through the signal connector (3015), so that the coil (3013) generates magnetic attraction to the armature (3017) after being electrified and overcomes the pulling force of the spring (3016), the push rod (3011) fixed on the armature (3017) moves along with the magnetic attraction to generate thrust and acts on the straight-through street (2), and the gas storage small ball (1) is automatically separated from the straight-through joint (2); when the coil (3013) is powered off, the suction force disappears, and the push rod (3011) is retracted by the spring (3016).

Technical Field

The invention relates to the technical field of high-accuracy combustion method gas heat value measurement, in particular to an automatic popping device for a combustion method gas heat value measuring device.

Background

The non-continuous working constant pressure combustion heat value measuring technology obtains the heat value of the fuel gas through measuring the fuel gas consumption and the temperature rise of a heat absorbing medium, and the method can be used for measuring the heat value of the fuel gas to obtain high accuracy because the quality and the temperature can reach high precision. This method of measuring the calorific value of a fuel gas was first proposed by Rossini. The Rosssini type gas heat value measuring system comprises a gas heat value measuring main body container, a temperature control system, a gas quality measuring and distributing system, a smoke component detecting system and a control system.

The principle of measuring the calorific value of the fuel gas is as follows: the fuel gas with certain mass is sent into the combustion chamber to be slowly combusted at constant pressure, all released heat is absorbed by pure water in the container, the total heating value can be obtained by measuring the temperature rise of the heat absorbing medium, and the heat value of the fuel gas is calculated by the following formula:

ceq is the equivalent specific heat capacity of the heat-absorbing medium in the container and a combustion chamber, a stirrer and the like;

Δ T-temperature rise of the heat-absorbing medium;

mgas-gas quality;

k-consider heat correction due to system heat dissipation, etc.

Regarding the gas mass weighing, the gas mass required for experimental measurement is relatively small (about 1g), and the pellets used for storing the gas have the weight of 80g, the outer diameter of 80mm, the thickness of 0.3mm and the pressure bearing capacity of more than 15 bar. The gas quality that this experiment needs to measure is less and the required precision is high, directly weighs and can produce great error, consequently needs to weigh through the comparison method. The mass balance is used for respectively measuring the mass of the small gas storage balls and the mass balance before the combustion measurement process is started, and the mass balance is used for respectively measuring the mass of the small gas storage balls and the mass balance again after the combustion process is finished, so that the accuracy of the measurement result is ensured. However, the small gas storage balls are directly and manually inserted and pulled out from the gas distribution pipeline, and because the device is carried out in a constant-temperature and constant-humidity environment, the repeated entering of the device into an experimental environment can bring large errors to the experiment, and the manual insertion and pulling for mass weighing can also generate large errors. So that the final calculation of the heat value of the fuel gas brings large errors.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic ejecting device in a gas heat value measuring device, which can automatically eject a gas storage container from an inflation pipeline after the gas heat value measuring device finishes working.

In order to solve the technical problems, the invention provides the following technical scheme:

a device for automatically popping a gas storage container from an inflation pipeline after a gas calorific value measuring device finishes working comprises a popping device body, wherein the popping device body is arranged on a gas supply pipeline, and the gas supply pipeline is sequentially provided with a straight joint, a popping device body, a pressure sensor, a mass flow controller and a stop valve;

the popping device body comprises a current detector, a push rod controller and a push rod integral frame, a gas supply pipeline penetrates through and clamps the popping device body, the current detector is fixed at one end of the push rod controller through a flat gasket, and the other end of the push rod controller is fixed on the push rod integral frame; the push rod controller is internally provided with an ejection piece;

the automatic control device is used for receiving signals of the pressure sensor, realizing automatic ejection of the ejection piece and acting on the straight joint, and pushing the gas storage small ball out of the gas supply pipeline.

Preferably, the through connector is used for connecting the gas storage small ball.

Preferably, the current detector, the push rod controller and the center of the shell are provided with mounting holes for the gas supply pipeline to pass through.

Preferably, the ejection member includes a push rod, a coil, a housing, a spring, an armature, and a bearing ring.

A bearing ring is arranged in the shell; the armature iron penetrates through the bearing ring, one end far away from the through joint is connected with the inner wall of the shell through a spring, and one end facing the through joint is connected with a push rod; the shell is provided with a through hole which is convenient for the push rod to extend out; a coil is arranged in the shell.

Preferably, the shell is also internally provided with a magnetism isolating ring.

Preferably, one end of the shell far away from the through joint is provided with a signal connector for connecting with the push rod controller.

Preferably, the ejection member is provided in a plurality along the circumferential direction of the housing.

Preferably, the automatic control device comprises a programmable current source, a single chip microcomputer, an upper computer, a current detector, a programmable current source, a single chip microcomputer and a pressure sensor which are electrically connected; the upper computer is connected with the single chip microcomputer and is used for setting air pressure values, push rod values, current input settings and an air pressure real-time detection instrument.

Preferably, the pressure sensor senses the air pressure of the small air storage balls, when the set pressure value is reached, signals are output to the single chip microcomputer to control the programmable current source, the programmable current source generates current, the current detector judges the magnitude of the current, and the current is transmitted to the push rod control device; the signal of the push rod controller is input into the ejection piece through the signal connector, so that the coil is electrified to generate magnetic attraction to the armature and overcome the tension of the spring, the push rod fixed on the armature moves along with the coil to generate thrust, and the thrust acts on the straight joint to automatically separate the gas storage small ball from the straight joint; and when the coil is powered off, the suction force disappears, and the push rod is retracted by the spring.

Drawings

FIG. 1 is a gas supply pipeline of a combustion method gas calorific value measuring device;

FIG. 2 is a pop-up arrangement on the gas supply duct;

FIG. 3 is an internal structural view of the eject member;

FIG. 4 is a flow chart of the invention

In the drawings, the components represented by the respective reference numerals are listed below: 1-gas storage small balls, 2-straight-through joints, 3-ejection device bodies, 4-pressure sensors, 5-mass flow controllers and 6-stop valves; 301-current detector, 302-flat gasket, 303-push rod controller, 304-push rod integral frame; 3011-push rod, 3012-magnetism isolating ring, 3013-coil, 3014-shell, 3015-signal connector, 3016-spring, 3017-armature, 3018-bearing ring

Detailed Description

The technical solution of the present invention is described in detail below by means of the accompanying drawings and examples.

Referring to the attached figure 1, the popping device body 3 is arranged on a gas supply pipeline, and a straight-through joint 2, the popping device body 3, a pressure sensor 4, a mass flow controller 5 and a stop valve 6 are arranged on the gas supply pipeline at one time;

referring to fig. 2, the pop-up device body 3 includes a current detector 301, a push rod controller 303 and a push rod integral frame 304, and a gas supply pipe passes through and blocks the pop-up device body 3; the current detector 301 is fixed at one end of the push rod controller 303 through a flat gasket 302, and the other end of the push rod controller 303 is fixed on the push rod integral frame 304; the push rod integral frame 304 is internally provided with an ejection piece; wherein, the current detector 301, the push rod controller 303 and the shell 3014 center are equipped with the mounting hole that is used for the gas air feed pipe to pass, are convenient for realize the installation joint.

Referring to fig. 3, the ejection member includes a push rod 3011, a coil 3013, a housing 3014, a spring 3016, an armature 3017, and a bearing ring 3018; a bearing ring 3018 is fixed in the shell 3014; the armature 3017 penetrates through the bearing ring 3018, one end far away from the through joint 2 is connected with the inner wall of the shell 3014 through a spring 3016, and one end facing the through joint 2 is connected with a push rod 3011; the shell 3014 is provided with a through hole for pushing out the push rod 3011 conveniently; a coil 3013 is housed in housing 3014. The end of the housing 3014 remote from the feed-through 2 is provided with a signal connector 3015 for connection to the push-rod controller 303.

The gas storage device also comprises an automatic control device which is used for realizing the automatic ejection of the ejection piece and acting on the straight-through connector 2 by the signal of the pressure sensor 4 so as to push the gas storage small ball 1 out of the gas supply pipeline.

Specifically, the automatic control device comprises a programmable current source, a single chip microcomputer, an upper computer, an ejection piece, a push rod controller 303, a current detector 301, the programmable current source, the single chip microcomputer and a pressure sensor 4 which are electrically connected; wherein, the host computer is connected with the singlechip and is used for setting the air pressure value, the push rod 3011 value, the current input and the real-time air pressure monitoring instrument.

As shown in the attached figure 1, the through connector 2 is used for connecting the small gas storage ball 1, and when the small gas storage ball is used, the small gas storage ball 1 is connected with the through connector 2, so that the small gas storage ball is inserted into a gas supply pipeline. The fixed pressure value is set through the upper computer, when the pressure sensor 4 (PAA-3X pressure transmitter of KELLER company can be selected, the measurement range is 0-10bar)4 detects the set pressure value reached after the combustion of the gas is finished, a signal is transmitted to the single chip microcomputer (stm 32 can be selected), the single chip microcomputer transmits a signal to the programmable current source and transmits current to the current detector 301, the current is transmitted to the push rod controller 303 (the push rod controller 303 is used for receiving the value set in advance by the upper computer and controlling the push rod 3011 to push out when the current is transmitted), and the gas storage small ball 1 is pushed out from the gas supply pipeline according to the value set in advance.

The ejection device is provided with a plurality of ejection pieces (the ejection pieces can be arranged along the circumferential direction of the shell), wherein the push rod 3011 is electrified by the coil 3013 to generate suction force to extend out, so that the electromagnetic suction force can be controlled by controlling the current, and the extension length and the extension force of the push rod 3011 can be controlled. And the pipeline has a pressure value after the gas storage small ball 1 is popped out, and when the pressure value is sensed, the coil 3013 is powered off, and the push rod 3011 is retracted.

Specifically, the current detector 301 determines the current level and transmits the current level to the push rod controller 303 (the push rod controller 303 is controlled by the upper computer, and several push rods 3011 can be set to be pushed out), and the force for pushing out the push rods is controlled by the current level.

Referring to fig. 3, which is a structural diagram of an ejection member, a signal of the push rod controller 303 is input to the ejection member by the signal connector 3015, the coil 3013 generates magnetism after being powered on and attracts the armature 3017, and overcomes the pulling force of the spring 3016, so that the push rod 3011 fixed on the armature 3017 moves along with the coil to generate thrust, and the thrust acts on the through joint 2 to separate the gas storage small ball 1 from the through joint 2; when the coil 3013 is powered off, the suction force disappears, and the push rod 3011 is retracted by the spring 3016.

In addition, a magnetism isolating ring 3012 is further installed in the casing 3014, and the magnetism isolating ring 3012 can effectively suppress high-frequency noise generated by electrifying the coil 3013.