CN108957156B - Powder static continuous monitor - Google Patents
Powder static continuous monitor Download PDFInfo
- Publication number
- CN108957156B CN108957156B CN201810478603.0A CN201810478603A CN108957156B CN 108957156 B CN108957156 B CN 108957156B CN 201810478603 A CN201810478603 A CN 201810478603A CN 108957156 B CN108957156 B CN 108957156B
- Authority
- CN
- China
- Prior art keywords
- cup
- sampling
- sampling cup
- outer cylinder
- insulating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a powder static continuous monitor, which consists of a connecting flange, an outer cylinder, an inner cup of a sampling cup, an insulating layer, an outer cup of the sampling cup, an explosion-proof small chamber, an electric leading-out structure of the inner cup and a supporting piece of the sampling cup; the connecting flanges are fixedly connected to two ends of the outer barrel; the outer cylinder is in a metal cylinder opening cylinder shape, and the side wall of the outer cylinder is provided with an outer cylinder electricity leading-out hole; the sampling cup inner cup, the insulating layer and the sampling cup outer cup form an inverted cone frustum-shaped sampling cup, the inverted cone frustum-shaped sampling cup is positioned inside the outer barrel and close to the edge of the pipeline, the insulating layer is positioned outside the sampling cup inner cup, and the sampling cup outer cup is positioned outside the insulating layer; the outer cup of the sampling cup is welded and fixed with the outer cylinder through a sampling cup supporting piece; an explosion-proof small chamber is arranged outside an outer cylinder of the monitor, an electrostatic detection plate is arranged inside the monitor and used for detecting charges, and a relay contact is arranged on the electrostatic detection plate; the inner cup of the sampling cup penetrates the insulating layer through the inner cup electric leading-out structure, passes through the outer cup of the sampling cup and the outer cylinder electric leading-out hole, and is connected with the electrostatic detection board inside the explosion-proof chamber.
Description
Technical Field
The invention relates to the technical field of pneumatic powder transmission, in particular to a powder static continuous monitor.
Background
In the production process of polyolefin powder materials represented by PE and PP, the pneumatic conveying link can enable polyolefin granules to have static electricity of 1-5 mu C/kg, meanwhile, the pneumatic conveying link of the granules contains polyolefin dust such as drawn wires and crushed granules with a certain content, meanwhile, the polyolefin can be accompanied by monomer combustible gas represented by ethylene and propylene to escape, the critical value of static discharge not generated in a storage bin is 0.1-0.2 mu C/kg, and the situation causes the high occurrence of dust explosion accidents of the polyolefin storage bin caused by the static discharge.
According to statistics of electrostatic dust explosion accidents of 13 sets of devices 70 of domestic 10 enterprises in pneumatic polyolefin material conveying bins, particle dust explosion is 62. Wherein the accident rate of the LDPE device is the highest, namely 44, accounting for 63 percent, and the accident rate of the PP device is 15 accounting for 21 percent.
The seventies of the 20 th century are the peak period of foreign petrochemical dust explosion accidents, and a series of industrial experiments and researches are promoted, and the conclusion is that 'the static electricity of plastic powder is an ignition source for solving most dust explosions' (Mr. Glor,1988) and the 'when a product is processed to generate high potential and is in an explosive atmosphere, the fatal combination maximizes the explosion probability'.
The static monitor that domestic current adopted is mostly for can empty constant volume formula sampling cylinder (CN1303428C, CN1548966A, CN2618171Y) principle, and the sampling cylinder is installed inside the static monitor casing, and the sampling cylinder can stretch into pneumatic transmission pipeline a bit, connects the flourishing material to carry out the electrostatic charge measurement, and after measuring, rotatory sampling cylinder again discharges the sample through the dodge gate at the bottom of the sampling cylinder. The rotation of the sampling cylinder is realized by the reciprocating motion of the cylinder connecting rod. The existing dumping type constant volume sampling cylinder principle static monitor works in an intermittent mode, a material is sampled by one cylinder, static charge measurement is carried out, and next sampling is prepared after the material is dumped. Because the time is needed for filling and emptying the materials, the time for reliably completing sampling once usually needs to exceed 1 min.
Simultaneously because the aggregate splashes in pipeline, the aggregate probably falls back into cylinder and sampling cylinder intermediate space, and after accumulating to a certain degree, the motion of sampling cylinder can be hindered, causes the material of sampling to empty completely, leads to the sampling failure. Maintenance personnel are required to manually disassemble the static monitor shell and manually clean the blocking materials.
Another form of electrostatic monitor employs a fixed faraday, such as CN203965528U, CN203479919U, with a movable bottom plate, where the faraday itself does not rotate and the rotating faraday bottom plate. But the rotation of the movable bottom plate is still dragged by using the air cylinder, and an air cylinder link still exists. The material splashing and accumulation can occur in the stroke area of the connecting rod of the air cylinder, so that the movement of the air cylinder is blocked and limited. The bottom plate is not opened/closed in place, and meanwhile, the service life of the air cylinder is shortened, so that the reliability of the whole material sampling is poor. Meanwhile, the Faraday cylinder main body is positioned in the expanded non-pipeline area, so that the material is fully filled, the material emptying time is prolonged, the sampling presents obvious discontinuity, and a long time interval exists between 2 times of sampling.
A more novel sampling structure is the one presented in CN107632212A, which uses an integral pipe section faraday cage design. And no rotating part and no cylinder are provided, so that the reliability is greatly improved. However, the powder quality is obtained by calculation and evaluation, and the actual real-time powder quality may have deviation, so that the final charge-to-mass ratio accuracy of the static monitor is reduced.
Disclosure of Invention
The invention aims to provide a detector which has high reliability and can continuously collect powder signals. In order to achieve the purpose, the invention adopts the technical scheme that: a powder static continuous monitor comprises a connecting flange, an outer cylinder, an inner cup of a sampling cup, an insulating layer, an outer cup of the sampling cup, an explosion-proof chamber, an electric leading-out structure of the inner cup and a supporting piece of the sampling cup.
The two connecting flanges are fixedly connected to two ends of the outer barrel; the outer cylinder is of a metal cylinder opening tubular structure, and an outer cylinder electricity leading-out hole is formed in the side wall of the outer cylinder; the sampling cup inner cup, the insulating layer and the sampling cup outer cup form an inverted cone frustum-shaped sampling cup, the inverted cone frustum-shaped sampling cup is positioned in the outer barrel and close to the edge of the pipeline, the insulating layer is positioned on the outer side of the sampling cup inner cup, and the sampling cup outer cup is positioned on the outer side of the insulating layer; the outer cup of the sampling cup is fixedly welded with the outer barrel through a sampling cup supporting piece; the sampling cup outer cup has various structural forms, and the sampling cup outer cup can be an inverted cone structure corresponding to the sampling cup inner cup and also can be a cylindrical surface structure with the same diameter as the inlet edge of the sampling cup inner cup.
The upper opening of the inner cup of the sampling cup is large, the lower opening is small, and the inner cup of the sampling cup is in a state of resisting and delaying leakage of the granular materials; the included angle between the wall of the inner cup of the inverted cone frustum-shaped sampling cup and a vertical line is small, so that the included angle between the wall of the inner cup of the sampling cup and a horizontal plane is far larger than the repose angle of granules (represented by PE and PP). The inner wall of the sampling cup is smooth, and the included angle between the inner cup wall of the sampling cup and the horizontal plane is far larger than the friction angle between granules (represented by PE and PP) and the inner wall of the sampling cup. The aggregate can not be permanently retained in the cup and can be completely leaked out in a first-in first-out sequence integral flow mode, the aggregate in the sampling cup can be completely leaked out along with the aggregate after pneumatic conveying of the aggregate is stopped, and the aggregate cannot be stored in the sampling cup. The outer diameter of the inlet of the inner cup of the sampling cup is smaller than 1/4 of the inner diameter of the outer cylinder, the center of the inner cup of the sampling cup deviates from the center of the outer cylinder of the electrostatic monitor, and one side edge of the sampling cup is closer to the inner wall of the outer cylinder, so that the sampling cup does not have obvious influence on the overall blanking. The distance is reserved between the edge of the inlet of the inner cup of the sampling cup and the inner wall of the outer cylinder, so that overflowing granules can fall from any direction. The diameter of the material leakage opening of the inner cup of the sampling cup is more than or equal to 10 times of the average material long axis particle size, so that the material is prevented from being clamped at the material leakage outlet of the sampling cup.
An explosion-proof small chamber is arranged outside an outer cylinder of the monitor, an electrostatic detection plate is arranged inside the explosion-proof small chamber and used for charge detection, and a relay contact is arranged on the electrostatic detection plate; the inner cup of the sampling cup penetrates the insulating layer and the outer cup of the sampling cup through the inner cup electric leading-out structure, and then is connected into the static detection board inside the explosion-proof chamber through the outer barrel electric leading-out hole. The inner cup of the sampling cup can be controllably grounded through a relay contact on the electrostatic detection board. The outer cup of the sampling cup is directly connected with the outer cylinder to be grounded through the sampling cup supporting piece. And the static detection plate transmits the real-time static charge detection value out in a 4-20 mA current mode. The electric lead-out wire of the inner cup of the sampling cup is hidden between the upper layer and the lower layer of the sampling cup supporting piece, so that the material is prevented from being washed away.
When the sampling cup works, the granular materials enter the inner cup of the sampling cup from the upper end, and because the area above the inner cup of the sampling cup is several times larger than the area of the lower leakage opening, the granular materials are prevented from leaking out slowly and are accumulated in the sampling cup, the inner cup of the sampling cup is quickly filled, and redundant granular materials can overflow from the edge of the upper end of the sampling cup. When the material leaks from the lower end of the sampling cup, the newly conveyed material is continuously supplemented above the sampling cup, so that the volume of the internal material in the sampling cup is kept basically constant in the pneumatic conveying process of the material, and the mass of the material in the sampling cup can be obtained because the bulk density of the granular material is known. Meanwhile, the charge quantity of the granular materials in the sampling cup can be measured due to the Faraday's principle, and the real-time continuous charge-to-mass ratio of the materials is obtained.
The advantages and the effective benefits of the invention are as follows:
(1) due to the adoption of a non-mechanical sampling principle, the whole charge monitoring unit has no mechanical rotating part and no cylinder, the cylinder is not required to pull the constant volume sampling cylinder to receive and pour materials, and the cylinder is not required to pull the constant volume sampling cylinder bottom plate. The charge monitoring is real-time detection, and reflects the condition of the static charge carried by the material in real time. The monitoring response speed is improved theoretically. Because of the absence of the cylinder and the mechanical sampling cylinder, the service life and reliability of the monitor are greatly improved.
(2) Due to the adoption of real-time charge monitoring and the matching of a control algorithm, the static elimination mode is a real-time tracking material charge change, the electricity elimination convergence speed is high, the residual charge value after electricity elimination is small, and the control is stable. The static monitor is matched with a charge eliminator to ensure that the static elimination system can eliminate the charge in real time, and the residual charge can be at an extremely low level, so that the system has high safety. The defects that a cylinder sampling mode is adopted in the past mechanical constant volume, the sampling period is long, the sampling is discontinuous, a data-free area is arranged in the middle of the sampling, the tracking performance of the charge change of the material is poor, the electricity is consumed according to an empirical value, the convergence is poor, the residual static charge is high and the like can be avoided.
(3) Meanwhile, the electrostatic device monitor can predict the mass of the material in the sampling cup, obtain more accurate charge-to-mass ratio of the material and have higher detection precision. Because the monitor is matched with the ion wind eliminator to adopt a feedback control algorithm, extremely low residual charge can be obtained, and the residual charge is smaller than the critical value of the static discharge which is not generated by the material, thereby realizing the intrinsic safety of the material pneumatic transmission static.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Reference numerals:
1: a connecting flange; 2: an outer cylinder; 3: sampling an inner cup of the cup; 4: an insulating layer;
5: sampling cup outer cup; 6: an explosion-proof cell; 7: an inner cup electrical lead-out structure;
8: an outer cylinder electrical outlet; 9: a sampling cup support;
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows:
as shown in figure 1, the powder static continuous monitor consists of a connecting flange 1, an outer cylinder 2, a sampling cup inner cup 3, an insulating layer 4, a sampling cup outer cup 5, an explosion-proof small chamber 6, an inner cup electric leading-out structure 7 and a sampling cup supporting piece 9.
The two connecting flanges 1 are fixedly connected to two ends of the outer barrel 2; the outer cylinder 2 is of a metal cylinder opening tubular structure, and an outer cylinder electricity leading-out hole 8 is formed in the side wall of the outer cylinder 2; the sampling cup inner cup 3, the insulating layer 4 and the sampling cup outer cup 5 form an inverted cone frustum-shaped sampling cup, the inverted cone frustum-shaped sampling cup is positioned inside the outer barrel 2 and close to the edge of the pipeline, the insulating layer 4 is positioned outside the sampling cup inner cup 3, and the sampling cup outer cup 5 is positioned outside the insulating layer 4; the sampling cup outer cup 5 has the same included angle with the horizontal plane as the inner cup 3, an equal-thickness insulating layer 4 is arranged between the sampling cup inner cup 3 and the sampling cup outer cup 5, the sampling cup outer cup 5 and the sampling cup inner cup 3 are of a complete set of cup structure, and the lower end of the sampling cup outer cup 5 and the lower end of the sampling cup inner cup 3 are convergent. The outer cup 5 of the sampling cup is fixedly welded with the outer barrel 2 through a sampling cup supporting piece 9.
The upper opening of the sampling cup inner cup 3 is large, the lower opening is small, and the sampling cup inner cup 3 is in a state of resisting and delaying leakage of the granular materials; the included angle between the wall of the inner cup 3 of the inverted cone frustum-shaped sampling cup and a vertical line is small, so that the included angle between the wall of the inner cup 3 of the sampling cup and a horizontal plane is far larger than the repose angle of granules (represented by PE and PP). The inner wall of the inner cup 3 of the sampling cup is smooth, and the included angle between the cup wall of the inner cup 3 of the sampling cup and the horizontal plane is far larger than the friction angle between granules (represented by PE and PP) and the inner wall of the sampling cup. The aggregate can not be permanently retained in the cup and can be completely leaked out in a first-in first-out sequence integral flow mode, the aggregate in the sampling cup can be completely leaked out along with the aggregate after pneumatic conveying of the aggregate is stopped, and the aggregate cannot be stored in the sampling cup. In this embodiment, 3 cup walls in the cup in the sampling cup and perpendicular line contained angles are less than 30 °, and 3 upper surface opening diameters more than or equal to 2 times of bottom surface bottom of cup internal diameters in the sampling cup, and 3 upper and lower area ratios more than or equal to 4 in the cup in the sampling cup, produce and leak the material and hinder slowly. In the embodiment, the outer diameter of the inlet of the inner cup 3 of the sampling cup is smaller than 1/4 of the inner diameter of the outer cylinder 2, the center of the inner cup 3 of the sampling cup deviates from the center of the outer cylinder 2 of the electrostatic monitor, and one side edge of the sampling cup is closer to the inner wall of the outer cylinder 2, so that the sampling cup does not have obvious influence on the overall blanking. The inlet edge of the inner cup 3 of the sampling cup is spaced from the inner wall of the outer cylinder 2, so that overflowing aggregates can fall from any direction. The diameter of a material leakage opening of the inner cup 3 of the sampling cup is more than or equal to 10 times of the average material long axis particle size, so that the material is prevented from being clamped at the material leakage outlet of the sampling cup.
An explosion-proof small chamber 6 is arranged outside the outer cylinder 2 of the monitor, an electrostatic detection plate is arranged inside the explosion-proof small chamber 6 and used for charge detection, and a relay contact is arranged on the electrostatic detection plate; the inner cup 3 of the sampling cup penetrates the insulating layer 4 and the outer cup 5 of the sampling cup through the inner cup electric leading-out structure 7, and then the electric connection is connected to the static detection board inside the explosion-proof chamber 6 through the outer barrel electric leading-out hole 8. The inner cup 3 of the sampling cup can be controllably grounded through a relay contact on the electrostatic detection plate. The sampling cup outer cup 5 is directly connected with the outer cylinder 2 to be grounded through a sampling cup supporting piece 9. And the static detection plate transmits the real-time static charge detection value out in a 4-20 mA current mode. The electric lead-out wire of the inner cup 3 of the sampling cup is hidden between the upper layer and the lower layer of the sampling cup supporting piece 9, so that the material is prevented from being washed away.
When the sampling cup provided by the invention works, the granular materials enter the sampling cup inner cup 3 from the upper end, and because the area above the sampling cup inner cup 3 is several times larger than the area of the lower leakage opening, the granular materials are prevented from leaking out slowly and are accumulated in the sampling cup, the sampling cup inner cup 3 is filled quickly, and redundant granular materials can overflow from the edge of the upper end of the sampling cup. When the material leaks from the lower end of the sampling cup, the newly conveyed material is continuously supplemented above the sampling cup, so that the volume of the material inside the sampling cup inner cup 3 is kept basically constant in the material pneumatic conveying process, and the mass of the material inside the sampling cup inner cup 3 can be obtained because the bulk density of the granular material is known. Meanwhile, the charge quantity of the granular materials in the sampling cup can be measured due to the Faraday's principle, and the real-time continuous charge-to-mass ratio of the materials is obtained.
Example two:
as shown in FIG. 2, the second embodiment is similar to the second embodiment, except that the sampling cup outer cup 5 has the same diameter as the inlet edge of the sampling cup inner cup 3, and the outer cup wall of the sampling cup outer cup 5 is a cylindrical surface with the same diameter.
Claims (5)
1. A powder static continuous monitor is characterized in that: the sampling cup consists of a connecting flange, an outer cylinder, an inner cup of the sampling cup, an insulating layer, an outer cup of the sampling cup, an explosion-proof small chamber, an electric leading-out structure of the inner cup and a supporting piece of the sampling cup;
the two connecting flanges are fixedly connected to two ends of the outer barrel; the outer cylinder is of a metal cylinder opening tubular structure, and the side wall of the outer cylinder is provided with an outer cylinder electricity leading-out hole; the sampling cup inner cup, the insulating layer and the sampling cup outer cup form an inverted cone frustum-shaped sampling cup, the inverted cone frustum-shaped sampling cup is positioned in the outer barrel and close to the edge of the pipeline, the insulating layer is positioned on the outer side of the sampling cup inner cup, and the sampling cup outer cup is positioned on the outer side of the insulating layer; the outer cup of the sampling cup is fixedly welded with the outer barrel through a sampling cup supporting piece;
an explosion-proof small chamber is arranged outside an outer cylinder of the monitor, an electrostatic detection plate is arranged inside the explosion-proof small chamber and used for charge detection, and a relay contact is arranged on the electrostatic detection plate; the inner cup of the sampling cup penetrates through the insulating layer through the inner cup electric leading-out structure, passes through the outer cup of the sampling cup and the outer cylinder electric leading-out hole, and is connected into the electrostatic detection board inside the explosion-proof small chamber;
the upper opening of the inner cup of the sampling cup is large, the lower opening is small, and the inner cup of the sampling cup is in a state of resisting and delaying leakage of the granular materials; the included angle between the cup wall of the inner cup of the sampling cup and the horizontal plane is larger than the repose angle of the granules; the inner wall of the inner cup of the sampling cup is smooth, and the included angle between the cup wall of the inner cup of the sampling cup and the horizontal plane is larger than the friction angle between the granules and the inner wall of the sampling cup; the aggregate can not be permanently retained in the cup and can be completely leaked out in a first-in first-out sequence integral flow mode, the aggregate in the sampling cup can be completely leaked out along with the aggregate after pneumatic conveying of the aggregate is stopped, and the aggregate cannot be stored in the sampling cup.
2. The powder static electricity continuous monitor of claim 1, characterized in that: 1/4 that the outer diameter of the inlet of the inner cup of the sampling cup is smaller than the inner diameter of the outer cylinder, the center of the inner cup of the sampling cup deviates from the center of the outer cylinder of the electrostatic monitor, and one side edge of the sampling cup is close to the inner wall of the outer cylinder; the edge of the inlet of the inner cup of the sampling cup is spaced from the inner wall of the outer cylinder; the diameter of the material leakage opening of the inner cup of the sampling cup is more than or equal to 10 times of the average material long axis particle diameter.
3. The powder static electricity continuous monitor according to claim 1 or 2, characterized in that: the inner cup of the sampling cup is controllably grounded through a relay contact on the electrostatic detection plate; the outer cup of the sampling cup is directly connected with the outer cylinder to be grounded through the sampling cup supporting piece.
4. The powder static electricity continuous monitor of claim 1, characterized in that: the static detection plate transmits the real-time static charge detection value out in a 4-20 mA current mode; the electric lead-out wire of the inner cup of the sampling cup is hidden between the upper layer and the lower layer of the sampling cup supporting piece.
5. The powder static electricity continuous monitor according to claim 1 or 2, characterized in that: the sampling cup outer cup has various structural forms, and the sampling cup outer cup is an inverted cone structure corresponding to the sampling cup inner cup or a cylindrical surface structure with the same diameter as the inlet edge of the sampling cup inner cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810478603.0A CN108957156B (en) | 2018-05-18 | 2018-05-18 | Powder static continuous monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810478603.0A CN108957156B (en) | 2018-05-18 | 2018-05-18 | Powder static continuous monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108957156A CN108957156A (en) | 2018-12-07 |
| CN108957156B true CN108957156B (en) | 2020-08-25 |
Family
ID=64499470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810478603.0A Active CN108957156B (en) | 2018-05-18 | 2018-05-18 | Powder static continuous monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108957156B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749781A (en) * | 2019-11-28 | 2020-02-04 | 北京普惠实华科技有限公司 | Powder static continuous monitor |
| CN111157808A (en) * | 2020-01-17 | 2020-05-15 | 北京普惠实华科技有限公司 | Powder static charge detection calibration nipple |
| CN111536766B (en) * | 2020-04-17 | 2021-07-16 | 中国兵器工业火炸药工程与安全技术研究院 | Automatic detection device for saturated electrostatic charge amount in hot air drying process of energetic material |
| CN111458575B (en) * | 2020-04-17 | 2022-05-27 | 中国兵器工业火炸药工程与安全技术研究院 | Automatic detection device for spiral conveying saturated electrostatic charge quantity of energetic material |
| CN113552425A (en) * | 2021-08-09 | 2021-10-26 | 北京普惠实华科技有限公司 | Powder static real-time supervision ware |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62294960A (en) * | 1986-06-16 | 1987-12-22 | Shiseido Co Ltd | Method and apparatus for measuring amount of static charge on hair |
| CN2618171Y (en) * | 2003-05-10 | 2004-05-26 | 江苏东强股份有限公司 | Electrostatic power monitor |
| CN1548966A (en) * | 2003-05-10 | 2004-11-24 | 江苏东强股份有限公司 | Powder electrostatic monitor |
| CN1769915A (en) * | 2005-10-13 | 2006-05-10 | 江苏东强股份有限公司 | Portable static charge collector |
| CN201408228Y (en) * | 2009-05-22 | 2010-02-17 | 东北大学 | Air pumping type testing device for electric charge of spatial dust |
| CN201607494U (en) * | 2010-02-11 | 2010-10-13 | 湖州师范学院 | Insulation liquid flowing charge alleviating and measuring device |
| CN102495300A (en) * | 2011-11-15 | 2012-06-13 | 西安交通大学 | Multifunctional high voltage electrode for measuring space charge |
| CN103344814A (en) * | 2013-07-17 | 2013-10-09 | 中国人民解放军军械工程学院 | Sensing device for measuring electrification voltage of high-temperature high-speed air flow |
| CN203479919U (en) * | 2013-08-12 | 2014-03-12 | 赵金福 | Static electricity monitor for polyolefin particles |
| CN103687264A (en) * | 2012-09-21 | 2014-03-26 | 株式会社Trinc | Static eliminator for parts feeder |
| CN203965528U (en) * | 2014-07-30 | 2014-11-26 | 大庆安惟特科技有限公司 | Polyolefin bunker electrostatic monitor |
| CN105676010A (en) * | 2016-01-07 | 2016-06-15 | 华南农业大学 | Device for measuring droplet charge-mass ratio of electrostatic spraying droplets |
| CN107632212A (en) * | 2015-12-25 | 2018-01-26 | 北京东方计量测试研究所 | A kind of powder electrostatic real-time monitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016109906A1 (en) * | 2015-01-09 | 2016-07-14 | 兰州大学 | Multifactor analyzer for electric charge quantity of separated particle |
-
2018
- 2018-05-18 CN CN201810478603.0A patent/CN108957156B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62294960A (en) * | 1986-06-16 | 1987-12-22 | Shiseido Co Ltd | Method and apparatus for measuring amount of static charge on hair |
| CN2618171Y (en) * | 2003-05-10 | 2004-05-26 | 江苏东强股份有限公司 | Electrostatic power monitor |
| CN1548966A (en) * | 2003-05-10 | 2004-11-24 | 江苏东强股份有限公司 | Powder electrostatic monitor |
| CN1769915A (en) * | 2005-10-13 | 2006-05-10 | 江苏东强股份有限公司 | Portable static charge collector |
| CN201408228Y (en) * | 2009-05-22 | 2010-02-17 | 东北大学 | Air pumping type testing device for electric charge of spatial dust |
| CN201607494U (en) * | 2010-02-11 | 2010-10-13 | 湖州师范学院 | Insulation liquid flowing charge alleviating and measuring device |
| CN102495300A (en) * | 2011-11-15 | 2012-06-13 | 西安交通大学 | Multifunctional high voltage electrode for measuring space charge |
| CN103687264A (en) * | 2012-09-21 | 2014-03-26 | 株式会社Trinc | Static eliminator for parts feeder |
| CN103344814A (en) * | 2013-07-17 | 2013-10-09 | 中国人民解放军军械工程学院 | Sensing device for measuring electrification voltage of high-temperature high-speed air flow |
| CN203479919U (en) * | 2013-08-12 | 2014-03-12 | 赵金福 | Static electricity monitor for polyolefin particles |
| CN203965528U (en) * | 2014-07-30 | 2014-11-26 | 大庆安惟特科技有限公司 | Polyolefin bunker electrostatic monitor |
| CN107632212A (en) * | 2015-12-25 | 2018-01-26 | 北京东方计量测试研究所 | A kind of powder electrostatic real-time monitor |
| CN105676010A (en) * | 2016-01-07 | 2016-06-15 | 华南农业大学 | Device for measuring droplet charge-mass ratio of electrostatic spraying droplets |
Non-Patent Citations (2)
| Title |
|---|
| 火炸药粉体静电带电监测方法对比实验研究;卫水爱 等;《含能材料》;20171231;第25卷(第6期);第515-519页 * |
| 粉体静电起电的试验研究;党君祥 等;《中国粉体技术》;20010630;第7卷(第3期);第11-13页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108957156A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108957156B (en) | Powder static continuous monitor | |
| CN203479919U (en) | Static electricity monitor for polyolefin particles | |
| CN101920144A (en) | Material-level detecting device of dust collector ash hopper | |
| CN117775738B (en) | Sealed weightless masterbatch feeder and control method for accurate feeding thereof | |
| JP2006337035A (en) | Powder weighing/supplying device | |
| CN212703422U (en) | Accumulated dust purging charge level indicator | |
| CN219971173U (en) | On-line monitoring alarm mechanism for blockage of feed inlet of bin pump | |
| CN201776037U (en) | Material level detector of dust hopper of deduster | |
| CN211236040U (en) | Powder static continuous monitor | |
| CN208775928U (en) | Pneumatic conveying dedusting balancing device | |
| CN108190522B (en) | Prevent superfine powder dynamic measurement feeding system of raise dust | |
| CN203855123U (en) | Feeding status detection device for feed barrel | |
| CN111157808A (en) | Powder static charge detection calibration nipple | |
| CN104692127A (en) | Dense-phase conveying control method and system | |
| CN210323208U (en) | Powder static monitor | |
| CN212150871U (en) | Pneumatic conveying equipment for flying ash of hazardous waste incineration system | |
| CN110568274B (en) | Pipeline powder static monitoring devices | |
| CN207015923U (en) | External Level measurement device and its mounting structure | |
| CN115303804A (en) | Intelligent bin pump with automatic ash discharging function | |
| CN201890629U (en) | Fluidization cone transfer pump with fluidizing device | |
| CN107380782B (en) | Ash bucket device capable of accurately judging and relieving accident ash deposition of dust remover | |
| CN110749781A (en) | Powder static continuous monitor | |
| CN110387263B (en) | Acetylene generator device and slag discharge control method | |
| CN207215402U (en) | Putty air leak test device for sealed feeder | |
| CN215923753U (en) | Automatic powder discharge valve and online monitoring and obstacle clearing control system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |