阅读说明：本技术 一种气瓶的水压称重及烘干方法 (Hydraulic weighing and drying method for gas cylinder ) 是由 王利民 陈彦飞 石远发 王艳辉 于 2021-07-30 设计创作，主要内容包括：本发明揭示了一种气瓶的水压称重及烘干方法,包括伴随称重的水压测试及完成水压测试后的倒水烘干两部分主要工序。其中在试验机的水压翻转架上安装涡轮升降机,并将压力传感器模块固定装接于涡轮升降机的顶部内侧,由此利用涡轮升降机对气瓶的高度升降控制,在单次吊装上料的情况下实现水压测试及其前后的两次称重,并且改善排水烘干的通气切换控制和流向,以达到较快速度完成内腔完全干燥、出料。本发明方法的应用,通过设备改造在现有水压测试如常进行的前提下实现了吊装上料后的两次自动化称重读取,与此同时对于水压测试后的气瓶改善烘干工艺,缩短烘干时间50%以上,以更低的生产成本和安全风险获得更优的产品烘干质量和内观品质。(The invention discloses a water pressure weighing and drying method for a gas cylinder, which comprises two main processes of water pressure testing accompanied with weighing and water pouring and drying after the water pressure testing is finished. The turbine lifter is installed on a water pressure overturning frame of the testing machine, and the pressure sensor module is fixedly installed on the inner side of the top of the turbine lifter, so that the turbine lifter is used for controlling the height of the gas cylinder, a water pressure test and two times of weighing before and after the water pressure test are realized under the condition of single hoisting and loading, and the ventilation switching control and the flow direction of drainage drying are improved, so that the inner cavity can be completely dried and discharged at a higher speed. The method provided by the invention is applied, the automatic weighing reading of twice after the material is hoisted and loaded is realized on the premise that the existing water pressure test is carried out as usual through equipment transformation, meanwhile, the drying process of the gas cylinder after the water pressure test is improved, the drying time is shortened by over 50%, and the better product drying quality and the better product interior quality are obtained with lower production cost and lower safety risk.)

1. A hydraulic weighing and drying method for a gas cylinder is realized based on a hydraulic external test inspection machine, a water pouring and drying frame and a transplanting machine, and is characterized in that: installing a turbine lifter on a hydraulic overturning frame of the testing machine, and fixedly attaching a pressure sensor module to the inner side of the top of the turbine lifter, wherein the method comprises the following steps:

the turbine elevator is lifted to an upper limit position along with the water pressure test of weighing, and the gas cylinder to be subjected to the water pressure test is transferred to the top of the turbine elevator for positioning through a transplanter, so that the loading of the gas cylinder and the weighing of an empty gas cylinder are completed; sinking materials to a water pressure turnover frame through a turbine elevator, fixing a gas cylinder, turning over the water cylinder, executing a water pressure test, resetting and leveling the water pressure turnover frame after the water pressure test is finished, shifting the gas cylinder full of water to the top of the turbine elevator for positioning, driving the turbine elevator to rise to an upper limit again, and finishing the weighing of the full gas cylinder;

and accomplish the pouring water after the water pressure test and dry, shift the gas cylinder of full water to the pouring water stoving frame through the transplanter, demolish the front end plug of gas cylinder front end and change the back end plug that inserts the steam pipe to the gas cylinder rear end, drive the pouring water stoving frame upset to be close perpendicular to make the gas cylinder front end down, pour moisture, the compressed air who sends into 0.7MPa through the steam pipe earlier switches the solenoid valve and erodees gas cylinder inner wall moisture to the gas cylinder in, then switch the solenoid valve and send into steam to filling in to the gas cylinder through the steam pipe, the front end emits steam, wait the gas cylinder heat up to with steam isothermal switch-over solenoid valve once more let in compressed air, get rid of steam and the residual water smoke of gas cylinder inner chamber, rely on the body self-heating of gas cylinder to dry completely, shift the ejection of compact through the gas cylinder that the transplanter will accomplish the stoving.

2. The hydraulic weighing and drying method for the gas cylinder according to claim 1, characterized in that: during empty bottle weighing, the upper limit corresponds to the height of the bottom edge of the gas bottle which is higher than the platform of the water pressure roll-over stand by more than 150 mm.

3. The hydraulic weighing and drying method for the gas cylinder according to claim 1, characterized in that: the turbine lifter comprises a lifting driving part, a lifting rod, a flange plate, a lower transition plate, a top transition plate and a positioning block, wherein the lifting driving part is arranged in a water pressure roll-over stand in a sealing mode and is controlled to drive the lifting rod to move, the flange plate is sleeved and assembled at the top of the lifting rod, the lower transition plate is fixedly connected to the surface of the flange plate, the pressure sensor module is embedded and positioned between the two transition plates, the positioning block is arranged along the radial distribution of the gas cylinder in pairs, and the central shaft of the gas cylinder is aligned to the lifting rod.

4. The hydraulic weighing and drying method for the gas cylinder according to claim 1, characterized in that: more than two turbine lifters are axially distributed along the gas cylinder, each turbine lifter is controlled to lift synchronously at the same height, and the pressure sensor module is only arranged inside the top side of one turbine lifter.

5. The hydraulic weighing and drying method for the gas cylinder according to claim 1, characterized in that: the pressure sensor module is externally connected with a display screen through signals and digitally presents result numerical values of empty bottle weighing and full bottle weighing.

6. The hydraulic weighing and drying method for the gas cylinder according to claim 1, characterized in that: the turbine elevator is at least selected from SWL20T-1A-244-II-500-F, and the rated parameter of an inner motor of the turbine elevator is 3KW1440 r/m.

Technical Field

The invention relates to an industrial gas cylinder post-processing device, in particular to an improved method for carrying out centralized water pressure test, weighing and drying treatment on a steel gas cylinder with high weight and a long cylinder body.

Background

With the improvement of the requirement of people on environmental protection, the emerging energy sources of natural gas and hydrogen are further developed and utilized. In order to more conveniently utilize the emerging energy sources, industrial gas cylinders special for storing special gases are developed, and industrial high-pressure gas cylinders matched with the industrial high-pressure gas cylinders are produced. The industrial high-pressure gas cylinder is used as a special high-pressure container, not only needs a special production process and customized equipment for production, but also needs a technical scheme for detecting whether the gas cylinders reach the standard in a matching way, and a water pressure external pressure testing machine and a water pressure test back gas cylinder inner wall rapid drying device become matched key equipment.

However, the existing water pressure external measurement pressure testing machine does not have a weighing function, a gas cylinder product needs to be weighed and transferred for two times independently after being manufactured, the gross weight of the gas cylinder product is larger than 5 tons, the feeding and discharging efficiency of manpower and a transplanter is difficult to improve, and higher safety risk exists.

Meanwhile, after the hydraulic pressure test is completed, the water in the gas cylinder needs to be completely poured and the inner surface of the gas cylinder needs to be completely dried. The conventional drying apparatus shown in fig. 1: the gas cylinder is through pouring water and drying the frame upset and be close the vertical state and empty the water of the inside water pressure test of gas cylinder from the front end bottleneck, and in letting in the gas cylinder with steam from the front end bottleneck again, need can provide the steam of the stable and capacity of pressure and just can dry the gas cylinder. Because the front end bottleneck must advance steam and pour water again, makes it unable sealed, when the inside steam pressure of gas cylinder risees, a large amount of steam of front end bottleneck can leak, and the inside steam of gas cylinder hardly rises to the gas cylinder rear end, generally causes to pass through the steam input gas cylinder internal surface of two hours more and still not have the result of drying completely. And because the drying time is too long, the inner surface of the gas cylinder is easy to generate rust, thereby causing the hidden troubles of unqualified inner appearance and uneven strength distribution of the gas cylinder.

Disclosure of Invention

The invention aims to provide a water pressure weighing and drying method for a gas cylinder, which solves the problem that large-sized high-pressure gas cylinders are intensively subjected to water pressure testing, weighing and drying treatment.

The technical scheme for realizing the aim is that the hydraulic weighing and drying method for the gas cylinder is realized based on a hydraulic external test inspection machine, a water pouring and drying frame and a transplanting machine, and is characterized in that: installing a turbine lifter on a hydraulic overturning frame of the testing machine, and fixedly attaching a pressure sensor module to the inner side of the top of the turbine lifter, wherein the method comprises the following steps:

the turbine elevator is lifted to an upper limit position along with the water pressure test of weighing, and the gas cylinder to be subjected to the water pressure test is transferred to the top of the turbine elevator for positioning through a transplanter, so that the loading of the gas cylinder and the weighing of an empty gas cylinder are completed; sinking materials to a water pressure turnover frame through a turbine elevator, fixing a gas cylinder, turning over the water cylinder, executing a water pressure test, resetting and leveling the water pressure turnover frame after the water pressure test is finished, shifting the gas cylinder full of water to the top of the turbine elevator for positioning, driving the turbine elevator to rise to an upper limit again, and finishing the weighing of the full gas cylinder;

and accomplish the pouring water after the water pressure test and dry, shift the gas cylinder of full water to the pouring water stoving frame through the transplanter, demolish the front end plug of gas cylinder front end and change the back end plug that inserts the steam pipe to the gas cylinder rear end, drive the pouring water stoving frame upset to be close perpendicular to make the gas cylinder front end down, pour moisture, the compressed air who sends into 0.7MPa through the steam pipe earlier switches the solenoid valve and erodees gas cylinder inner wall moisture to the gas cylinder in, then switch the solenoid valve and send into steam to filling in to the gas cylinder through the steam pipe, the front end emits steam, wait the gas cylinder heat up to with steam isothermal switch-over solenoid valve once more let in compressed air, get rid of steam and the residual water smoke of gas cylinder inner chamber, rely on the body self-heating of gas cylinder to dry completely, shift the ejection of compact through the gas cylinder that the transplanter will accomplish the stoving.

According to the water pressure weighing and drying method of the gas cylinder, further, in the weighing of the empty gas cylinder, the upper limit corresponds to the position, at which the bottom edge of the gas cylinder is higher than a platform of the water pressure overturning frame by more than 150 mm.

The hydraulic weighing and drying method of the gas cylinder further comprises the step that the turbine lifter comprises a lifting driving part, a lifting rod, a flange plate, a lower transition plate, a top transition plate and a positioning block, wherein the lifting driving part is hermetically arranged in the hydraulic overturning frame and is controlled to drive the lifting rod to move, the flange plate is sleeved and assembled at the top of the lifting rod, the lower transition plate is fixedly connected to the surface of the flange plate, the pressure sensor modules are embedded and positioned between the two transition plates, and the positioning blocks are distributed in pairs along the radial direction of the gas cylinder so that the central shaft of the gas cylinder is aligned with the lifting rod.

According to the hydraulic weighing and drying method for the gas cylinder, more than two turbine lifters are axially distributed along the gas cylinder, the turbine lifters are controlled to lift synchronously at equal height, and the pressure sensor module is only arranged inside the top side of one of the turbine lifters.

According to the water pressure weighing and drying method of the gas cylinder, further, the signal of the pressure sensor module is externally connected with a display screen, and the result numerical values of weighing empty gas cylinders and weighing full gas cylinders are displayed in a digitalized mode.

The hydraulic weighing and drying scheme of the invention has the substantial characteristics and the progressiveness that: according to the scheme, the automatic weighing reading of twice after the material is hoisted and loaded is realized on the premise that the existing water pressure test is carried out as usual through equipment transformation, meanwhile, the drying process is improved for the gas cylinder after the water pressure test, the drying time is shortened by more than 50%, and the better product drying quality and the better product interior quality are obtained with lower production cost and safety risk.

Drawings

Fig. 1 is a schematic diagram of the process state of pouring water and drying after a traditional gas cylinder is subjected to a water pressure test.

FIG. 2 is a schematic view of the loading structure of the gas cylinder and the hydraulic pressure testing device in the method of the present invention.

Fig. 3 is an enlarged schematic view of another view angle of fig. 2.

FIG. 4 is a schematic view of the process state of water pouring and drying after the water pressure test of the gas cylinder in the method.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings for the purpose of understanding and controlling the technical solutions of the present invention, so as to define the protection scope of the present invention more clearly.

Aiming at the defects of single function and unsatisfactory drying effect after detection in the aspect of water pressure detection of a large-sized steel high-pressure gas cylinder in the prior art, the designer creatively provides a water pressure weighing and drying method of the gas cylinder, and provides a more perfect technical solution for large-scale production and quality detection of industrial high-pressure gas cylinders.

Starting from the prior art, after the high-pressure gas cylinder is produced and manufactured, two parts of main equipment, namely a water pressure external test inspection machine and a water pouring drying frame, are required to be used for assisting other fixed tools or external appliances to realize the required preset function. In view of the foregoing disadvantages of the prior art apparatus and process, the method provides an optimized improvement in both apparatus and process aspects, as summarized below.

As shown in fig. 1 and 2, the modification of the device by the method of the invention is mainly directed to a hydraulic external test testing machine, and particularly, the device is provided with a hydraulic overturning frame 7 on which a gas supply bottle is fixedly arranged and controlled to overturn. Instead, the turbine lifter (not fully exposed) is mounted on the hydraulic roll-over stand, and the pressure sensor module 5 is fixedly attached to the inside of the top of the turbine lifter. By utilizing the pressure sensor module, the gravity borne by the gas cylinder can be converted into weight, and a signal is output so that the weight can be presented in a numerical mode. And the weighing process and the water pressure test are independently carried out along with the lifting action of the turbine lifter without interference, but the frequent lifting and transplanting of the gas cylinder under the two procedures can be reduced.

As can be seen from the detailed optimization of the hydraulic pressure testing device shown in the figure, the turbine lifter comprises a lifting driving part, a lifting rod 2, a flange 3, a lower transition plate 4a, a top transition plate 4b and a positioning block 6, wherein the lifting driving part is hermetically arranged in the hydraulic pressure roll-over stand and is controlled to drive the lifting rod 2 to move, and the part frequently needs to jump up and down on the liquid level of the hydraulic pressure test, so that necessary waterproof sealing treatment needs to be performed on an electric core part to ensure the mobility of the lifting rod. And the flange plate 3 and the lower transition plate 4a are sequentially sleeved, assembled and fixedly installed from the top of the lifting rod 2. The pressure sensor module 5 is embedded and positioned between the lower transition plate 4a and the top transition plate 4b, and meanwhile, the positioning blocks 6 are wedge-shaped guide block bodies and are distributed in pairs along the radial direction of the gas cylinder 1, so that the central shaft of the gas cylinder 1 is aligned with the lifting rod. Here, the pressure sensor module 5 is located on the axial path of the lifter, while the positioning of the cylinder by the positioning block 6 described above is intended to avoid weighing misalignments due to cylinder offset. And the pressure sensor module is externally connected with a display screen through signals and digitally presents result numerical values of empty bottle weighing and full bottle weighing.

And the figure shows that more than two turbine lifters are distributed along the axial direction of the gas cylinder 1, each turbine lifter is controlled to synchronously lift at the same height in the actual operation control, the pressure sensor module is only arranged in the top side of one turbine lifter, and the weighing result of the gas cylinder is obtained through the stress analysis of the physical principle.

From the product selection of the newly added functional accessories of the equipment transformation, the turbine elevator is preferably a finished machine tool which is developed by Hangzhou Huachen transmission equipment and has the model of SWL20T-1A-244-II-500-F, and the rated parameter of the motor is 3KW1440 r/m. And the weighing module is a Changzhou Ruite T08 pressure sensor module.

From the concrete operation realization of the process method, the process method mainly comprises a water pressure test accompanied with weighing and a water pouring and drying part after the water pressure test is finished. The process of each part is detailed as follows: firstly, weighing operation of empty bottle state and full bottle state is conducted alternately in the process of conventional water pressure test.

Firstly, the turbine elevator provided with the pressure sensor module is lifted to the upper limit position, namely the bottom edge of the corresponding gas cylinder is 150mm higher than the platform of the water pressure roll-over stand (which can be higher according to the length of the lifting rod).

And secondly, grabbing the gas cylinder to be tested by the hydraulic pressure by using a transplanter and placing the gas cylinder into a positioning block at the top of the turbine lifter, and automatically finishing feeding and empty cylinder weighing at one time, so that frequent lifting of workers can be reduced.

And thirdly, depositing materials to a water pressure overturning frame through a turbine lifter, fixing a gas cylinder, overturning the materials into water and performing a water pressure test, wherein the part is conventional operation, so detailed details are omitted.

And fourthly, resetting and leveling the water pressure roll-over stand after completing the water pressure test, shifting the full-water gas cylinder to the top of the turbine lift for positioning after dismantling the fixed tooling of the gas cylinder, driving the water pressure roll-over stand to descend and the turbine lift to ascend to the upper limit again, completing the full-water weighing of the gas cylinder, similarly avoiding manual multiple lifting for secondary weighing, and finally grabbing the gas cylinder by the transplanter and transferring the gas cylinder to a water pouring and drying stand.

And then the pouring and drying after the water pressure test is finished is technically improved to meet the technological requirements, and the specific operation process is as follows:

first, the gas cylinder full of water is transferred to the water pouring drying rack 8 through the transplanter, and the gas cylinder front end 11 abuts against and is positioned on the baffle 81. The front end plug of the front end 11 of the gas cylinder is detached, the rear end plug of the steam pipe 9 is connected to the rear end 12 of the gas cylinder in a replacement mode, and the water pouring drying rack 8 is driven to be turned to be approximately vertical (more than 70 degrees) so that the front end of the gas cylinder 1 faces downwards and water is poured.

And secondly, firstly switching the electromagnetic valve, and sending 0.7MPa of compressed air into the gas cylinder through the steam pipe 9 to flush the water on the inner wall of the gas cylinder. The main function is to accelerate the outflow speed of water in the gas cylinder and reduce water drops adhered to the inner wall of the gas cylinder.

And thirdly, switching the electromagnetic valve to send high-temperature steam Q into the gas cylinder through the steam pipe 9 until the steam Q is full and the front end emits the steam. Because the steam is mainly ascending air flow, when the steam in the air bottle reaches higher concentration and pressure, the steam can overflow from the front end 11 of the air bottle.

And fourthly, when the gas cylinder is heated to be isothermal with steam (or the outer wall of the gas cylinder is hot), the solenoid valve is switched again to introduce compressed air, the steam and residual water mist in the inner cavity of the gas cylinder are quickly removed, the gas cylinder body of the gas cylinder is dried by self-heating completely, heat loss is reduced, the phenomenon that the inner wall of the gas cylinder adsorbs steam again can be reduced, and rust is prevented from being generated.

And fifthly, drying the gas cylinder within 40 minutes to obtain a finished product state of the gas cylinder with technological requirements. And then driving the water pouring drying rack to be turned flat, removing the rear end plug with the steam pipe after the gas cylinder exits from the baffle positioned at the front end, and transferring and discharging the dried gas cylinder through a transplanter.

In summary, the water pressure weighing and drying scheme of the present invention has substantial characteristics and progressiveness compared with the traditional process, as can be seen from the detailed description of the illustrated embodiments: the transformation upgrading of this scheme has solved and has reached the gas cylinder body latter half section more than 3 meters and can not fast drying and rusty problem, has realized through equipment transformation under the prerequisite of current water pressure test as usual that twice automation after the hoist and mount material loading is weighed and is read, and meanwhile to the gas cylinder improvement drying process after the water pressure test, shorten more than 50% drying time to lower manufacturing cost and safe risk obtain more excellent product oven-dry mass and interior appearance quality.

In addition to the above embodiments, the present invention can also have other embodiments, and is not limited to the existing dimensions, the shapes and the applications of the products, and is widely applicable to various products requiring ultrasonic flaw detection and hardness detection, so that the technical solutions formed by adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.