阅读说明：本技术 主动流体静电消除系统 (Active fluid static elimination system ) 是由 陈炳旭 鲁建国 张绍赐 于 2020-06-24 设计创作，主要内容包括：一种主动流体静电消除系统,安装于流体输送管路,其包含有电磁阀、静电测量装置、流体去静电装置以及控制器。电磁阀连接于流体输送管路的接口,静电测量装置则用来测量流体输送管路中流体的静电值。流体去静电装置连接于电磁阀,而控制器连接于静电测量装置以及电磁阀,当控制器判断静电测量装置所测量的流体的静电值大于预定值时,开启电磁阀,以使流体通过流体去静电装置,以消除流体的静电荷。(An active fluid static elimination system is arranged on a fluid conveying pipeline and comprises an electromagnetic valve, a static measurement device, a fluid static elimination device and a controller. The electromagnetic valve is connected with the interface of the fluid conveying pipeline, and the static electricity measuring device is used for measuring the static electricity value of the fluid in the fluid conveying pipeline. When the controller judges that the static value of the fluid measured by the static measuring device is greater than a preset value, the electromagnetic valve is opened so that the fluid passes through the fluid static removing device to eliminate the static charge of the fluid.)

1. An active fluid static elimination system, installed at the interface of a fluid conveying pipeline, comprising:

the electromagnetic valve is connected to the interface of the fluid conveying pipeline;

the static measuring device is used for measuring the static value of the fluid in the fluid conveying pipeline;

the fluid static electricity removing device is connected with the electromagnetic valve; and

and the controller is connected with the static electricity measuring device and the electromagnetic valve, and when the controller judges that the static electricity value of the fluid measured by the static electricity measuring device is greater than a preset value, the electromagnetic valve is opened so that the fluid passes through the fluid static electricity removing device to eliminate the static electricity of the fluid.

2. The active fluid static elimination system of claim 1, wherein the static measurement device further comprises a static sensor fixed to the fluid transportation pipeline for measuring the static value of the fluid in the fluid transportation pipeline.

3. The active fluid static elimination system of claim 2, wherein the solenoid valve is a first solenoid valve, and further comprising a deionized water solenoid valve between the first solenoid valve and the interface, the deionized water solenoid valve being electrically connected to the controller.

4. The active fluid static elimination system of claim 3, wherein the controller opens the DI water solenoid to flush the first solenoid and the fluid static elimination device with DI water.

5. The active fluid static elimination system of claim 1 further comprising a pressurization pump installed in the fluid delivery line to provide a pressure required for delivering the fluid.

6. The active fluid static elimination system of claim 1, wherein the fluid static elimination apparatus comprises:

the valve body is connected with the electromagnetic valve;

the one-way check valve is arranged in the valve body;

the discharge groove is arranged in the valve body, is connected with the one-way check valve and comprises a side wall; and

and a static electricity discharger mounted on the side wall of the discharge groove to discharge the static charge in the fluid and discharge the fluid out of the valve body by using the discharge groove.

7. The active fluid static elimination system of claim 6, wherein the one-way check valve comprises a piston and a spring, the piston is a perfluoroalkoxyalkane polymer piston, and the valve body is a PFA valve body.

8. The active fluid static elimination system of claim 7, wherein the spring is a PFA spring, or the spring is a metal spring with a PFA coating.

9. The active fluid static elimination system of claim 8, wherein the static electricity extractor comprises a static electricity extraction needle connected to a ground terminal.

10. The active fluid static elimination system of claim 9, wherein the static electricity conducting needle comprises an inert metal static electricity conducting needle.

Technical Field

The invention relates to a fluid static elimination system. And more particularly to an active fluid static elimination system.

Background

Static electricity is a natural phenomenon in nature, and when an object charged with static electricity contacts an object having a potential difference with the object, charge transfer occurs, so that a spark discharge phenomenon occurs.

Static electricity may be generated when two different substances rub against each other, contact with each other, and are separated from each other, and serious people may ignite surrounding flammable environments to cause fire or explosion accidents. The problems of static electricity and the resulting hazards are therefore of increasing concern. In the industries of chemistry, petroleum, coating, plastic, printing, electronics and the like, the potential electrostatic hazard problem is easy to cause accidents, thereby causing casualties and property loss.

Static electricity may be generated in an industrial process by various operations such as tearing, peeling, stretching, impacting materials, pulverizing, sieving, rolling, stirring, transporting, spraying, filtering materials, and various operations such as flowing, splashing, spraying of gas and liquid, and if static electricity is accumulated to a dangerous level, electrostatic discharge may occur. The electrostatic discharge spark has Ignition Energy, so that when the spark Energy generated by the electrostatic discharge is larger than the Minimum Ignition Energy (MIE) required by an explosive mixture, the spark Energy can be an Ignition source causing fire or explosion.

According to the statistics of the research report database of the labor safety and health research institute, the fire hazard or explosion hazard occurring in the petrochemical industry is the highest, and the manufacturing industries such as the chemical material industry and the chemical products are the next, the main reason is that the petrochemical industry and the chemical industry are mostly flammable liquid, gas and other substances, and therefore, in the electrostatic hazard accident industry, the proportion of the three types is higher.

A first observation example: at about 13 pm on 29 th of 10/2007, a fire and a series of explosions occurred at a chemical storage and transportation site in iowa, usa, and the production area was undergoing an Ethyl acetate (Ethyl acetate) injection into a 300-gallon barrel tank, and an operator delivered the solvent to the top closed end of the barrel using an elastomer hose, heard the sound of the explosion soon, delayed burning of a large fire to a warehouse, and ignited the other flammable and combustible liquids stored, causing 1 employee minor injury and 1 firefighter burn.

Case two: about 14 pm 11/2008, a company producing waterproof coating in peach county, taiwan has a fire explosion accident, when the accident occurs, a solvent-based coating production process is performed in a factory, organic solvent Toluene (Toluene) and paint solvent mixed coating raw materials are mixed and stirred, when a Toluene tank at the bottom is pressurized by air and conveyed to a feeding port above a stirring tank body, the fire explosion accident occurs suddenly, and 1 of two field operators cannot be killed due to serious injury, and the other 1 of the two field operators are seriously burnt.

According to the cases at home and abroad, if the problem of static electricity cannot be overcome during liquid conveying, serious consequences can be caused. Therefore, how to safely and reliably convey liquids such as chemical solvents and the like can effectively reduce the occurrence of accidental disasters and contribute to improving the safety of the whole production.

Disclosure of Invention

This summary is provided to provide a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and is intended to neither identify key/critical elements of the embodiments nor delineate the scope of the embodiments.

It is an object of the present invention to provide an active fluid static elimination system that can effectively reduce static in chemical lines.

To achieve the above objects, one aspect of the present invention relates to an active fluid static elimination system installed at an interface of a fluid delivery pipeline. The active fluid static elimination system comprises an electromagnetic valve, a static measurement device, a fluid static elimination device and a controller. The electromagnetic valve is connected with the interface of the fluid conveying pipeline, and the static electricity measuring device is used for measuring the static electricity value of the fluid in the fluid conveying pipeline. When the controller judges that the static value of the fluid measured by the static measuring device is greater than a preset value, the electromagnetic valve is opened so that the fluid passes through the fluid static removing device to eliminate the static charge of the fluid.

In some embodiments, the electrostatic measurement apparatus further includes an electrostatic sensor fixed to the fluid conveying pipeline for measuring an electrostatic value of the fluid in the fluid conveying pipeline.

In some embodiments, the solenoid valve is a first solenoid valve, and a deionized water solenoid valve may be further included between the first solenoid valve and the interface, and the deionized water solenoid valve is also electrically connected to the controller.

In some embodiments, the controller may open the DI water solenoid to flush the first solenoid and the fluid destaticizing device with DI water.

In some embodiments, the active fluid static elimination system further comprises a pressure pump installed in the fluid conveying pipeline to provide the pressure required for conveying the fluid.

In some embodiments, the fluid static electricity removing device comprises a valve body, a one-way check valve, a discharge groove and a static electricity guider. The one-way check valve is arranged in the valve body, the discharge groove is also arranged in the valve body, the discharge groove is connected with the one-way check valve, and the discharge groove comprises a side wall. The static electricity discharger is mounted on the side wall of the discharge groove to discharge the static electricity in the fluid and discharge the fluid out of the valve body by using the discharge groove.

In some embodiments, the one-way check valve comprises a piston and a spring, the piston is a perfluoroalkoxy alkane Polymer (PFA) piston, and the valve body is a PFA valve body.

In some embodiments, the spring is a PFA spring, or the spring is a metal spring and has a PFA coating.

In some embodiments, the static electricity extractor comprises a static electricity leading-out pin connected to the grounding terminal.

In some embodiments, the static electricity lead-out pin comprises an inert metal static electricity lead-out pin.

Therefore, the active fluid static elimination system can be arranged in the fluid conveying pipeline according to requirements, and the electromagnetic valve is opened or closed according to the static value of the fluid measured by the static measurement device, so that the static charge accumulated in the conveying pipeline is discharged out of the pipeline. In addition, the piston, the spring and the valve body which are made of PFA materials are used for reducing metal pollution of fluid, part of the fluid which is contacted with the metal static electricity guider can be directly discharged through the discharge port, the electromagnetic valve and the fluid static electricity removing device can be cleaned by deionized water, the pollution of process fluid is effectively avoided, the production quality of a production line is improved, the safety of fluid transmission can be improved, and the safety and the process yield of production processes are greatly improved.

Drawings

The foregoing and other objects, features, advantages and embodiments of the disclosure will be more readily understood from the following description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view illustrating a fluid static electricity removing apparatus installed in a fluid conveying pipeline according to an embodiment of the invention.

FIG. 2 is a schematic illustration of static charge build-up in a pipeline during simulated fluid transfer.

FIG. 3 is a schematic diagram of the discharge of static electricity through the fluid static discharge device and the discharge of a portion of fluid during simulated fluid delivery.

Fig. 4 is a schematic diagram illustrating an active fluid static elimination method according to an embodiment of the invention.

Fig. 5 is a schematic diagram of an active fluid static elimination system according to an embodiment of the invention.

Fig. 6 is a schematic diagram of an active fluid static elimination system according to another embodiment of the invention.

[ description of main element symbols ]

100 fluid static electricity removing device 180 static electricity extractor

190, ground 200, fluid delivery line

220 fluid 230 interface

500 active fluid static elimination system 510 solenoid valve

530 static electricity measuring device 532 static electricity inductor

540 controller

Detailed Description

The following detailed description of the embodiments with reference to the drawings is provided for the purpose of limiting the scope of the present disclosure, and the description of the structural operations is not intended to limit the order of execution, any structures resulting from the rearrangement of elements to produce an apparatus with equal efficacy, which is within the scope of the present disclosure. In addition, the drawings are for illustrative purposes only and are not drawn to scale. For ease of understanding, the same or similar elements will be described with the same reference numerals in the following description.

Further, the terms (terms) used throughout the specification and claims have the ordinary meaning as commonly understood in the art, in the disclosure herein and in the claims, unless otherwise indicated. Certain terms used to describe the present disclosure will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present disclosure.

In the description and claims, unless the context requires otherwise, the word "a" or "an" may mean "one or more". The numbers used in the steps are only used for indicating the steps for convenience of description, and are not used for limiting the sequence and the implementation manner.

Furthermore, the terms "comprising," "including," "having," "containing," and the like, as used herein, are intended to be open-ended terms that mean including, but not limited to.

Referring to fig. 1 to 6, fig. 1 is a schematic view illustrating a fluid static electricity removing device installed in a fluid conveying pipe, fig. 2 is a schematic view illustrating static electricity accumulation in the pipe, and fig. 3 is a schematic view illustrating static electricity discharge through the fluid static electricity removing device and partial fluid discharge. FIG. 4 is a schematic diagram of an active fluid static elimination method. FIG. 5 is a schematic diagram of an active fluid static elimination system. FIG. 6 is a schematic diagram of another active fluid static elimination system.

Referring first to fig. 4 and 5, as shown in fig. 5, an active fluid static elimination system 500 is installed in the fluid conveying pipeline 200, the active fluid static elimination system 500 includes a solenoid valve 510, a static electricity measuring device 530, a fluid static elimination device 100, and a controller 540. The fluid delivery circuit 200 is used to deliver a fluid 220, and the fluid delivery circuit 200 has a port 230. The solenoid valve 510 is connected to the port 230 of the fluid delivery circuit 200, and the static measurement device 530 measures the static value of the fluid 220 in the fluid delivery circuit 200. In some embodiments, the static measurement device 530 may detect a static value between 0.2KV and 20 KV. And the fluid static elimination apparatus 100 is connected to the solenoid valve 510.

In addition, the controller 540 is connected to the static electricity measuring device 530 and the solenoid valve 510, and when the controller 540 determines that the static electricity value of the fluid 220 measured by the static electricity measuring device 530 is greater than the predetermined value, the controller 540 opens the solenoid valve 510 to allow the fluid 220 to pass through the fluid static electricity removing device 100 to remove the static electricity of the fluid 220. In some embodiments, the static electricity value greater than the predetermined value may be greater than 2KV, for example, the controller 540 may open the solenoid valve 510 when the static electricity value is greater than 1 KV.

In some embodiments, the fluid is a chemical liquid, an organic solvent, or a Slurry with solid particles (Slurry), etc. commonly used in plants.

In some embodiments, the static measurement device 530 comprises a static sensor 532 that can be fixed on the fluid transportation pipeline 200 to measure the static value of the fluid 220 in the fluid transportation pipeline 200.

Referring also to FIG. 4, the active fluid static elimination method 400 is illustrated using the active fluid static elimination system 500. First, the active fluid static elimination method 400 includes step 410, measuring the static value in the fluid conveying pipeline 200 by the static measurement device 530, and step 420, determining whether the measured static value is greater than a predetermined value, for example, greater than 1KV or 2KV, by the controller 540. In step 430, when the controller 540 determines that the measured static value is greater than the predetermined value, the controller 540 opens the first solenoid valve 510 to discharge the fluid 220 from the fluid static electricity removing device 100 to remove the static electricity. Next, in step 440, the static measurement device 530 is continuously utilized to measure the static value of the fluid 220 in the fluid delivery line 200. In step 450, the controller 540 determines whether the measured static electricity value is less than a predetermined value. Then, in step 460, when the controller 540 determines that the measured electrostatic value of the fluid 220 is smaller than the predetermined value, the controller 540 closes the first solenoid valve 510 to continue to provide the fluid required by the process.

Step 455 is described in conjunction with the active fluid static elimination system 600 of fig. 6. Referring to fig. 6, the active fluid static elimination system 600 is installed in the fluid conveying pipeline 650, and at least one set of active fluid static elimination system 600 may be installed in the fluid conveying pipeline 650 according to the requirement, but the invention is not limited thereto, and more than two sets of active fluid static elimination systems 600 may also be installed according to the requirement.

As shown, the fluid delivery pipe 650 is provided with a first end-of-use pipe 610 and a second end-of-use pipe 640, and is configured with two sets of active fluid static elimination systems 600 to eliminate static charges of the fluid 670 in the fluid delivery pipe 650.

Each active fluid static elimination system 600 includes a solenoid valve 620, a solenoid valve 630, a static measurement device 530, a fluid static elimination device 100, and a controller 540. The fluid delivery line 650 is used to deliver the fluid 670 to the in-process equipment via the first end-of-use line 610 and the second end-of-use line 640. The solenoid valve 630 is connected to the interface of the fluid delivery line 650, and the static electricity measuring device 530 measures the static electricity value of the fluid 670 in the fluid delivery line 650. In some embodiments, the static measurement device 530 may detect a static value between 0.2KV and 20 KV. The fluid static discharge apparatus 100 is connected to the solenoid valve 620, and the solenoid valve 620 is disposed between the solenoid valve 630 and the fluid static discharge apparatus 100.

In addition, the controller 540 is connected to the static electricity measuring device 530 and the solenoid valve 620, and when the controller 540 determines that the static electricity value of the fluid 670 measured by the static electricity measuring device 530 is greater than the predetermined value, the controller 540 opens the solenoid valve 620 to allow the fluid 670 to pass through the fluid static electricity removing device 100 to remove the static electricity of the fluid 670. In some embodiments, the static electricity value greater than the predetermined value may be greater than 2KV, for example, the controller 540 may open the solenoid valve 620 when the static electricity value is greater than 1 KV.

In some embodiments, the electrostatic measurement device 530 comprises an electrostatic sensor 532 that can be fixed on the fluid transport pipeline 650 to measure the electrostatic value of the fluid 670 in the fluid transport pipeline 650.

In some implementations, the solenoid valve 620 is a first solenoid valve and the solenoid valve 630 is a second solenoid valve, such as a deionized water solenoid valve, preferably a multi-channel valve, such as a three-way valve. The solenoid valves 620 and 630 are electrically connected to the controller 540.

Referring to step 455 of fig. 4, the controller 540 controls the second solenoid valve 630 to close the fluid valve flowing to the fluid destaticizing device 100 and opens the Deionized water valve of the second solenoid valve 630 to flush the first solenoid valve 620 and the fluid destaticizing device 100 with Deionized water (DIW), and then after a certain period of time, the controller 540 closes the Deionized water valve of the second solenoid valve 630.

Therefore, by controlling the second solenoid valve 630, the first solenoid valve 620 and the fluid static electricity removing device 100 can be effectively cleaned by deionized water, so as to improve the cleanliness of the pipeline and avoid contamination of subsequent process fluids.

In some embodiments, the first solenoid valve 620 and the second solenoid valve 630 may be opened simultaneously to allow the fluid 670 to flow into the fluid static discharge apparatus 100, or may be opened independently to allow the fluid 670 to flow into the fluid static discharge apparatus 100, without departing from the spirit and scope of the present invention.

In some embodiments, the active fluid static elimination system 600 further comprises a pressure pump 660 installed in the fluid delivery pipe 650 to provide the pressure required for delivering the fluid 670.

Referring to fig. 1 to 3, the fluid static electricity removing apparatus 100 includes a check valve 130, a discharge groove 160 and a static electricity discharger 180.

The check valve 130 is installed in the valve body 110, the discharge groove 160 is disposed in the valve body 110, and the discharge groove 160 is connected to a downstream of the check valve 130. The static charge extractor 180 is mounted to the sidewall 162 of the drain tank 160 to extract the static charge 240 from the fluid 220 and to discharge the drain fluid 250 out of the valve body 110 using the drain tank 160. Since the fluid 250 is in contact with the metal, the fluid contacting the metal pin of the electrostatic extractor 180 is discharged to the electrostatic discharge apparatus 100 to avoid contamination of the subsequent process.

In some embodiments, the valve body 110 includes a joint portion 120 for connecting the port 230 of the delivery pipe 210 of the fluid delivery pipe 200, but the invention is not limited thereto, and the joint portion 120 can also be connected to any other component of the fluid delivery pipe 200, such as a solenoid valve or a bypass pipe, for conducting static electricity discharge and fluid discharge, without departing from the spirit and scope of the invention.

In addition, the valve body 110 further includes a discharge port 170 connected to the discharge groove 160 to discharge the fluid 220 out of the valve body 110. Generally, the drain 170 is used to connect to an external drain pipe 300 to deliver the drain fluid 250 to a fluid recovery tank or the like.

In some embodiments, the static electricity extractor 180 comprises a static electricity extraction pin electrically connected to the ground 190 to guide the static electricity from the fluid 220 to the ground 190 to neutralize the static electricity and prevent the static electricity from accumulating in the transportation pipe 210.

In some embodiments, delivery tube 210 is a fluid delivery tube made from perfluoroalkoxy alkane Polymers (PFA).

In some embodiments, the check valve 130 includes a piston 140 and a spring 150, and when the pressure of the fluid is greater than a predetermined value, for example, greater than 10Kpa, the piston 140 compresses the spring 150 to make the fluid flow to the discharge groove 160 and contact the static electricity guider 180 disposed perpendicular to the sidewall 162 of the discharge groove 160 to guide the static electricity to the ground 190.

In addition, since the static electricity extractor 180 is vertically disposed on the sidewall 162 of the discharge groove 160 in a needle shape, the static electricity extractor 180 is vertical to the flowing direction of the discharged fluid 250, thereby further preventing the fluid from splashing, preventing the fluid contacting the metal static electricity extractor 180 from flowing back into the delivery pipe 210, and contributing to improving the quality and stability of the subsequent manufacturing process.

In some embodiments, the static electricity discharge needle comprises an inert metal static electricity discharge needle made of inert metal (Noble metal) to utilize the strong oxidation and corrosion resistance of the inert metal, which may be made of ruthenium, rhodium, palladium, silver, osmium, iridium, platinum and/or gold.

In some embodiments, the piston 140 is a perfluoroalkoxyalkane Polymer (PFA) piston, and the valve body 110 is also a PFA valve body.

In some embodiments, the spring 150 may be a PFA spring, or a metal spring with a PFA coating to provide suitable spring force.

In summary, the active fluid static elimination system can be disposed in the fluid conveying pipeline according to the requirement, and open or close the electromagnetic valve according to the fluid static value measured by the static measurement device, so as to discharge the static charge accumulated in the conveying pipeline. In addition, the piston, the spring and the valve body which are made of PFA materials are used for reducing metal pollution of fluid, part of the fluid which is contacted with the metal static electricity guider can be directly discharged through the discharge port, the electromagnetic valve and the fluid static electricity removing device can be cleaned by deionized water, the pollution of process fluid is effectively avoided, the production quality of a production line is improved, the safety of fluid transmission can be improved, and the safety and the process yield of production processes are greatly improved.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.