阅读说明：本技术 一种粉体静电实时监测器 (Powder static real-time supervision ware ) 是由 彭辉 周建军 李海龙 龚华 陈丹 冯耀川 马永欣 于 2021-08-09 设计创作，主要内容包括：本发明属于静电消除技术领域,且公开了一种粉体静电实时监测器,包括监测器内筒,所述监测器内筒从内到外依次固定安装有绝缘内衬、外筒,所述监测器内筒与外筒夹层区域的上、下端均设置有两个橡胶密封圈,位于两个所述橡胶密封圈的中部设置有固定安装在监测器内筒外围的四氟环卡。本发明通过在监测器内筒、绝缘内衬与外筒组合区域设置有四条橡胶密封圈与两个四氟环卡配合工作,可以有效的防止气体外泄,粉料也不会进入到内筒、内衬和外筒之间,保证了设备的安全、可靠性,整个检测盒及其内部结构能够连续性的实时完成对粉体静电电荷的监测；突面法兰的设计,防止漏气,特别为粉料输送设计,支持粒料输送。(The invention belongs to the technical field of static elimination, and discloses a powder static real-time monitor which comprises a monitor inner barrel, wherein an insulating lining and an outer barrel are fixedly arranged on the monitor inner barrel from inside to outside in sequence, two rubber sealing rings are arranged at the upper end and the lower end of an interlayer region of the monitor inner barrel and the outer barrel, and a tetrafluoro ring clamp fixedly arranged on the periphery of the monitor inner barrel is arranged in the middle of the two rubber sealing rings. According to the invention, four rubber sealing rings are arranged in the combined area of the inner cylinder, the insulating lining and the outer cylinder of the monitor to be matched with the two PTFE ring clamps, so that gas can be effectively prevented from leaking, powder can not enter the space among the inner cylinder, the lining and the outer cylinder, the safety and the reliability of equipment are ensured, and the whole detection box and the internal structure thereof can continuously monitor the electrostatic charges of the powder in real time; the design of the convex flange prevents air leakage, and is particularly designed for powder conveying and supports granule conveying.)

1. The utility model provides a powder static real-time supervision ware, includes monitor inner tube (1), its characterized in that: the monitoring device is characterized in that an insulating lining (2) and an outer barrel (3) are sequentially and fixedly mounted on the inner barrel (1) of the monitoring device from inside to outside, two rubber sealing rings (5) are arranged at the upper end and the lower end of the interlayer region of the inner barrel (1) of the monitoring device, two rubber sealing rings (5) are arranged at the middle parts of the two rubber sealing rings (4) and fixedly mounted on the periphery of the inner barrel (1) of the monitoring device, flanges (6) are fixedly mounted at the top and the bottom of the inner barrel (1) of the monitoring device, pressing covers (13) are fixedly mounted on the steps of the inner rings of the flanges (6), an inner barrel binding post (8) is welded on the inner barrel (1) of the monitoring device, an inner barrel signal wire (9) is led out from the left side of the inner barrel binding post (8) of the monitoring device and connected with an electrostatic detection board (10), the electrostatic detection board (10) is fixedly mounted in a detection box (7), and the detection box (7) is welded on the left side of the outer barrel (3), the bottom of the detection box (7) is provided with a cable wiring port (11), and two grounding lugs (12) are welded on the opposite side of the cable wiring port.

2. The powder static electricity real-time monitor of claim 1, characterized in that: the interlayer space formed by the inner barrel (1) and the outer barrel (3) of the monitor is an upper annular cavity and a lower annular cavity respectively, and the structure of the tetrafluoro ring clamp (4) and the structure of the rubber seal ring (5) are arranged in the annular cavity area.

Technical Field

The invention belongs to the technical field of static elimination, and particularly relates to a powder static real-time monitor.

Background

In the production process of polyolefin powder materials represented by PE and PP, the pneumatic conveying link can enable the polyolefin powder to have 1-5 mu C/kg static electricity, the powder is completely combustible dust in conveying, the granule pneumatic conveying link also contains a certain content of polyolefin dust, meanwhile, the polyolefin can be accompanied with the escape of monomer combustible gas represented by ethylene and propylene, the critical value of no electrostatic discharge of a bin is 0.1-0.2 mu C/kg, the electrostatic discharge causes the high occurrence of dust explosion accidents of the polyolefin bin, according to the statistics of the electrostatic dust explosion accidents of the pneumatic conveying bin of polyolefin materials from 13 devices 70 of 10 enterprises in China, the granule dust explosion is 62, wherein the highest accident proportion of an LDPE device is 44, the proportion accounts for 63%, the PP device 15 accounts for 21%, and the seventies of 20 th century is the peak period of the overseas petrochemical industry dust explosion accidents, thus, a series of industrial experiments and studies were conducted, and the conclusion was that "the static electricity of the plastic powder itself is the ignition source of most dust explosions" and that "when a product generates a high potential while being in an explosive atmosphere, this lethal combination maximizes the explosion probability".

The real-time powder static monitor adopts Faraday cylinder static detection principle, adopts real-time charge monitoring, and can make static elimination mode track material charge change in real time by means of matching control algorithm, and its static elimination convergence speed is quick, and its residual charge value after power consumption is small, and its control is stable.

Because the flange of current static monitor is the plane flange, and has the gap between gland and inner tube, the inside lining, consequently only be applicable to the aggregate monitoring, if the transported substance is the powder and conveying gas is nitrogen gas, the structure before will have the defect, will have gas leakage, dust leakage risk, influences the powder and carries, and the nitrogen gas of leaking still can harm personal safety.

Disclosure of Invention

The invention aims to solve the problems and provides a powder static real-time monitor which has a powder and particle monitoring effect.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a powder static real-time supervision ware, includes the monitor inner tube, the monitor inner tube is from inside to outside in proper order fixed mounting have insulating inside lining, urceolus, the monitor inner tube all is provided with two rubber seal with the regional upper and lower extreme of urceolus intermediate layer, is located two rubber seal's middle part is provided with fixed mounting at monitor inner tube outlying tetrafluoro ring card, the equal fixed mounting in monitor inner tube top and bottom has the flange, two fixed mounting has the gland on the step of flange inner ring, weld the inner tube terminal on the monitor inner tube, an inner tube signal line is drawn forth in the left side of inner tube terminal and is connected with the static, static detection board fixed mounting is in detecting the box, detects box welding in the urceolus left side, the bottom of detecting the box has been seted up cable junction mouth and two ground connection auricles of its offside welding.

As a preferred technical scheme of the invention, interlayer spaces formed by the inner cylinder and the outer cylinder of the monitor are an upper annular cavity and a lower annular cavity respectively, the PTFE ring clamp and the rubber sealing ring are arranged in the annular cavity area, gas can be effectively prevented from leaking by the PTFE ring clamp and the rubber sealing ring, powder cannot enter among the inner cylinder, the lining and the outer cylinder, and the safety and the reliability of equipment are ensured.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, four rubber sealing rings are arranged in the combined area of the inner cylinder, the insulating lining and the outer cylinder of the monitor to be matched with the two PTFE ring clamps, so that gas can be effectively prevented from leaking, powder can not enter the space among the inner cylinder, the lining and the outer cylinder, the safety and the reliability of equipment are ensured, and the whole detection box and the internal structure thereof can continuously monitor the electrostatic charges of the powder in real time; the design of the convex flange prevents air leakage, and is particularly designed for powder conveying and supports granule conveying.

Drawings

FIG. 1 is a schematic cross-sectional view of the entire structure of the present invention;

FIG. 2 is a schematic view of the overall appearance of the structure of the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 1.

The numbers in the figures illustrate the following:

1. an inner barrel of the monitor; 2. an insulating liner; 3. an outer cylinder; 4. tetrafluoro ring cards;

5. a rubber seal ring; 6. a flange; 7. a detection cartridge; 8. an inner cylinder wiring terminal;

9. an inner cylinder signal line; 10. an electrostatic detection plate; 11. a cable connection port; 12. a grounding lug;

13. and (7) pressing the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the invention provides a powder static real-time monitor, which comprises a monitor inner cylinder 1, wherein an insulating liner 2 and an outer cylinder 3 are fixedly arranged on the monitor inner cylinder 1 from inside to outside in sequence, an interlayer region between the monitor inner cylinder 1 and the outer cylinder 3 is arranged on the monitor inner cylinder 1, the lower extreme all is provided with two rubber seal 5, the middle part that is located two rubber seal 5 is provided with fixed mounting at monitor inner tube 1 outlying tetrafluoro ring card 4, 1 top of monitor inner tube and the equal fixed mounting in bottom have flange 6, fixed mounting has gland 13 on the step of two flange 6 inner rings, weld inner tube terminal 8 on the monitor inner tube 1, an inner tube signal line 9 is drawn forth in inner tube terminal 8's left side and is connected with electrostatic detection board 10, electrostatic detection board 10 fixed mounting is in detecting box 7, detect 7 welding in 3 left sides of urceolus, detect the bottom of box 7 and seted up cable connection mouth 11 and two ground connection auricles 12 of its offside welding.

Wherein, the intermediate layer space that monitor inner tube 1 and urceolus 3 formed is two upper and lower toroidal cavity respectively, and tetrafluoro ring card 4 and 5 structures of rubber seal then set up in the toroidal cavity region, utilize tetrafluoro ring card 4 and rubber seal 5 can effectually prevent gas leakage, and the powder can not enter into between monitor inner tube 1, insulating inside lining 2 and the urceolus 3 yet, can not influence the normal transport of material, has guaranteed safety, the reliability of equipment.

The working principle and the using process of the invention are as follows:

the monitor adopts a Faraday cylinder static detection principle, adopts real-time charge monitoring, and can ensure that a static elimination system can eliminate electricity in real time by matching with a charge eliminator, so that residual charge is at an extremely low level, and the system has high safety;

this monitor adopts the design of protruding face flange 6, has increased tetrafluoro ring card 4, four rubber seal 5 of upper and lower symmetry simultaneously, and tetrafluoro ring card 4 is used for connecting fixed monitor inner tube 1 and gland 13, and four rubber seal 5 then are used for doing sealedly, prevent firstly that the powder from getting into the pipe gap, secondly prevent to carry gaseous leakage. The gland 13 is designed by changing the original polytetrafluoroethylene material into stainless steel, the polytetrafluoroethylene ring clamp 4 is made of polytetrafluoroethylene non-conductive material, and the design meets the requirement of GB12158-2006 standard;

the monitor structure has better sealing performance than the prior monitor structure, and can monitor powder in real time and granular materials in real time.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.