CN211236040U - Powder static continuous monitor - Google Patents
Powder static continuous monitor Download PDFInfo
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- CN211236040U CN211236040U CN201922089187.8U CN201922089187U CN211236040U CN 211236040 U CN211236040 U CN 211236040U CN 201922089187 U CN201922089187 U CN 201922089187U CN 211236040 U CN211236040 U CN 211236040U
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Abstract
The utility model provides a powder static continuous monitor, which comprises a monitor outer cylinder, a sampling cup inner cup, a sampling cup outer cup, an insulating layer, an explosion-proof small chamber, an inner cup electric leading-out piece, a sampling cup supporting piece, a nozzle, a double-clamping sleeve joint, a back blowing air pipe, an explosion-proof Glan head, a static detection plate and a gas control assembly; the gas control assembly comprises an electromagnetic valve, a gas tank and a filtering pressure reducing valve; the filter pressure reducing valve, the gas tank, the electromagnetic valve and the blowback air pipe are connected in sequence; the sampling cup inner cup, the sampling cup outer cup and the insulating layer form a hollow conical sampling cylinder and are fixed inside the monitor outer cylinder through a sampling cup supporting piece; the explosion-proof chamber is fixed outside the outer barrel of the monitor; the inner cup of the sampling cup penetrates an electric connecting wire through the insulating layer and the outer cup of the sampling cup through the inner cup electric leading-out part, and then the electric connecting wire passes through the outer cylinder electric leading-out hole and is connected to the static detection plate for charge detection; and a cable below the static detection plate is connected with the static elimination system through the explosion-proof gland head.
Description
Technical Field
The utility model discloses a belong to petrochemical technical field for the powder pneumatic conveying in-process material that continuous monitoring used the aggregate to represent carries the electric charge volume, specific powder static continuous monitor for pipe-line transportation that says so.
Background
In the production process of polyolefin powder materials, the medium of the materials in the pneumatic conveying link often carries a large amount of static electricity due to friction, stripping, collision and other reasons, so that the explosion of a polyolefin storage bin is easily induced. In 139 electrostatic accidents disclosed in 1985 and 2004 of China, about 70 polyolefin bins exploded. Therefore, it is very important to monitor the electrostatic change of the powder in time and accurately.
The petrochemical industry product contains powder material (such as polyolefin), and the powder material is in a fast flowing state in the pneumatic conveying process, and collides and rubs with the pipeline and the wall of the container to bring a certain amount of static electricity to the powder material, and the charged material is sometimes adsorbed on the pipe wall or is extruded and bonded into blocks to directly influence the product quality, and along with the accumulation of the static electricity carried by the material, the explosion and combustion of the powder in the storage bin are very easily induced. Therefore, it is very important to monitor the electrostatic change condition of the powder in real time. At present, the static monitor who currently adopts is mostly can empty constant volume sampling cylinder principle. (Jiangsutong patent No. CN03113454.8) the sampling cylinder is installed inside the static monitor shell, the sampling cylinder can be inserted into a pneumatic transmission pipeline to measure the static charge, the sampling cylinder is rotated after the measurement, and the sampling sample is discharged through a movable door at the bottom of the sampling cylinder. The rotation of sampling cylinder is through cylinder connecting rod reciprocating motion, and current formula of empting constant volume sampling cylinder principle electrostatic monitoring ware is intermittent type formula work, and a material has sampled a section of thick bamboo, carries out the electrostatic charge and measures, and the back of empting is again prepared to carry out sampling next time. Because the time is needed for filling and emptying, the time for sampling once is about 1 min. Because the material splashes in pipeline, the aggregate probably falls back to in the middle of cylinder and the sampling cylinder, and after accumulating to a certain degree, the motion of sampling cylinder can be hindered, and the material of sampling can not empty completely, leads to the sampling failure. Maintenance personnel are required to manually clean the blockage.
Another form of static monitor employs a vertical faraday cup. (such as Daqing's unique patent number: CN201420422138.6) adopts a movable bottom plate mode, the Faraday cylinder does not rotate, and the rotating Faraday cylinder is a bottom plate of the Faraday cylinder. But the rotation of the movable bottom plate and the propulsion of the Faraday cylinder are still dragged by using the cylinder, and a cylinder link still exists. For discontinuous sampling, long time intervals exist in the middle of sampling points, and continuous control algorithms such as PID (proportion integration differentiation) cannot be used for adjusting and eliminating electricity. Meanwhile, the bottom plate of the sampling cup and the Faraday cylinder are driven by the air cylinder, the service life of the whole equipment is relatively short, and the reliability of the whole material sampling is poor.
The novel sampling structure is as the same as that of the Beijing Pu Huiwanhua application No. CN201810478603.0, the monitor is a continuous electrostatic detector, the Faraday cylinder electrostatic detection principle is adopted, the slow sampling method is applied to sampling, and the whole monitor has no rotating part and no air cylinder. According to the Faraday cylinder principle, the inverted cone round platform sampling cup is positioned inside the outer cylinder of the electrostatic monitor, the opening on the upper surface of the inner cup of the inverted cone round platform sampling cup is large, and the opening on the lower surface of the inner cup is small. When carrying the material, the material produces static with pipeline, sampling cup inner wall friction, collision, therefore the material can adsorb in the feed bin inner wall, or receives extrusion and humidity reason to produce the material piece, and the material can block in sampling cup hourglass material exit, needs the maintenance personal to unpack apart the monitor casing, and manual clearance card material.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high reliability, can effectively solve the powder static continuous monitoring device of the interior card material of sampling cup.
In order to achieve the above object, the present invention provides a powder static electricity continuous monitor.
A powder static continuous monitor is composed of a monitor outer cylinder, a sampling cup inner cup, a sampling cup outer cup, an insulating layer, an explosion-proof small chamber, an inner cup electric leading-out piece, a sampling cup supporting piece, a nozzle, a double-clamping sleeve joint, a back blowing air pipe, an explosion-proof Glan head, a static detection plate and a gas control assembly.
The gas control assembly comprises an electromagnetic valve, a gas tank and a filtering pressure reducing valve; the filtering pressure reducing valve, the gas tank, the electromagnetic valve and the blowback air pipe are connected in sequence.
The sampling cup inner cup, the sampling cup outer cup and the insulating layer form a hollow conical sampling cylinder and are fixed inside the monitor outer cylinder through a sampling cup supporting piece; the explosion-proof chamber is fixed outside the outer barrel of the monitor; the inner cup of the sampling cup penetrates an electric connecting wire through the insulating layer and the outer cup of the sampling cup through the inner cup electric leading-out part, and then is connected to the static detection plate through the outer cylinder electric leading-out hole for charge detection; a cable below the static detection plate is connected with a static elimination system through an explosion-proof gland head; the inner cup electric leading-out piece is arranged in the middle of the sampling cup supporting piece, so that the material can be prevented from being washed away.
One end of the back blowing pipe reversely blows air into the sampling cup at the position close to the bottom of the inverted cone round table sampling cup through the double-clamping sleeve joint and the explosion-proof small chamber, and the nozzle is inclined upwards; the back blowing pipe entering the inner cup of the sampling cup is hidden in the sampling cup supporting piece, so that the damage caused by the erosion of materials can be avoided; the other end of the back blowing pipe is connected with an electromagnetic valve in the gas control assembly; a filtering pressure reducing valve in the gas control assembly regulates the pressure of outlet gas so that the back flushing gas entering the gas tank is in a specified range; the gas tank is used for storing gas with a certain volume to ensure the back blowing gas quantity; the gas control component can obtain the gas with the gas quantity and pressure required by the controlled back flushing requirement.
Before and after the material is carried and when the system judges that the card material needs to be cleared away, the electromagnetic valve can be controlled to blow gas to the sampling cup so as to solve the problem of the card material in the sampling cup.
The utility model discloses increased the blowback design on the basis of application number 201810478603.0 patent, the reliability is high, and is longe-lived, can effectively solve the card material phenomenon among the powder electrostatic detection process.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numerals
1: a monitor outer cylinder; 2: sampling an inner cup of the cup; 3: an insulating layer;
4: sampling cup outer cup; 5: an explosion-proof cell; 6: an inner cup electrical outlet;
7: an outer cylinder electrical outlet; 8: a sampling cup support; 9: a nozzle;
10: a double-card sleeve joint; 11: a blowback air pipe; 12: an explosion-proof glan head;
13: an electrostatic detection plate; 14: an electromagnetic valve; 15: a gas tank;
16: a filtering pressure reducing valve; 17: a gas control assembly.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the powder static continuous monitor consists of a monitor outer cylinder 1, a sampling cup inner cup 2, a sampling cup outer cup 4, an insulating layer 3, an explosion-proof small chamber 5, an inner cup electric leading-out piece 6, a sampling cup supporting piece 8, a nozzle 9, a double-clamping sleeve joint 10, a back blowing air pipe 11, an explosion-proof detecting plate glan head 12, a static detecting plate 13 and a gas control assembly 17. The gas control assembly 17 comprises a solenoid valve 14, a gas tank 15 and a filtering pressure reducing valve 16.
As shown in FIG. 1, the filtering and pressure reducing valve 16, the air tank 15, the electromagnetic valve 14 and the blowback pipe 11 are connected in sequence.
As shown in fig. 1, the sampling cup inner cup 2, the sampling cup outer cup 4 and the insulating layer 3 form a hollow conical sampling cylinder and are fixed inside the monitor outer cylinder 1 through a sampling cup support member 8; the explosion-proof chamber 5 is fixed outside the monitor outer cylinder 1; the inner cup 2 of the sampling cup leads an electric connecting wire to pass through the insulating layer 3 and the outer cup 4 of the sampling cup through the inner cup electric leading-out piece 6 and then to pass through the outer cylinder electric leading-out hole 7 to be connected to the static detecting plate 13 for charge detection; a cable below the static detection plate 13 is connected with a PLC or DCS static elimination system through an anti-explosion gland head 12; the inner cup electric leading-out part 6 is arranged in the middle of the sampling cup supporting part 8, so that the material can be prevented from being washed away.
As shown in fig. 1, one end of the blowback pipe 11 blows compressed air or nitrogen back into the sampling cup through the explosion-proof small chamber 5 near the bottom of the inverted cone-shaped sampling cup through the double-clamping sleeve joint 10, and the nozzle 9 inclines upwards; the back blowing pipe 11 entering the inner cup 2 of the sampling cup is hidden in the sampling cup supporting piece 8, so that the damage caused by the erosion of materials can be avoided; the other end of the back blowing pipe 11 is connected with an electromagnetic valve 14 in the gas control assembly 17; a filtering pressure reducing valve 16 in the gas control assembly 17 regulates the pressure of outlet gas, so that the back flushing gas entering the gas tank 15 is in a specified range; the gas tank 15 is used for storing gas with a certain volume and keeping the back blowing air volume; the gas control assembly 17 obtains the compressed gas with the gas quantity and pressure required by the controlled back flushing requirement.
Before and after the material is conveyed and when the system judges that the material blockage needs to be removed, the electromagnetic valve 14 can be controlled to blow compressed air or nitrogen into the cup 2 in the sampling cup so as to solve the problem of material blockage in the sampling cup.
Claims (5)
1. A powder static continuous monitor is characterized in that: the device comprises a monitor outer cylinder, a sampling cup inner cup, a sampling cup outer cup, an insulating layer, an explosion-proof small chamber, an inner cup electric leading-out part, a sampling cup supporting part, a nozzle, a double-clamping sleeve joint, a back blowing pipe, an explosion-proof Glan head, an electrostatic detection plate and a gas control assembly; the gas control assembly comprises an electromagnetic valve, a gas tank and a filtering pressure reducing valve; the filter pressure reducing valve, the gas tank, the electromagnetic valve and the blowback air pipe are connected in sequence; the sampling cup inner cup, the sampling cup outer cup and the insulating layer form a hollow conical sampling cylinder and are fixed inside the monitor outer cylinder through a sampling cup supporting piece; the explosion-proof chamber is fixed outside the outer barrel of the monitor; the inner cup of the sampling cup penetrates an electric connecting wire through the insulating layer and the outer cup of the sampling cup through the inner cup electric leading-out part, and then the electric connecting wire passes through the outer cylinder electric leading-out hole and is connected to the static detection plate for charge detection; and a cable below the static detection plate is connected with the static elimination system through the explosion-proof gland head.
2. The powder static electricity continuous monitor of claim 1, characterized in that: one end of the back blowing pipe is reversely blown into the sampling cup through the anti-explosion small chamber at the position close to the bottom of the inverted cone round platform sampling cup through the double-clamping sleeve joint, and the nozzle is inclined upwards.
3. The powder static electricity continuous monitor of claim 1, characterized in that: the back-blowing pipe is hidden inside the sampling cup supporting piece, and damage caused by material washing is avoided.
4. The powder static electricity continuous monitor of claim 1, characterized in that: and a filtering pressure reducing valve in the gas control assembly regulates the pressure of the gas at the outlet, so that the back flushing gas entering the gas tank is in a specified range.
5. The powder static electricity continuous monitor of claim 1, characterized in that: the gas tank is used for storing gas with a certain volume, and the back blowing gas quantity is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922089187.8U CN211236040U (en) | 2019-11-28 | 2019-11-28 | Powder static continuous monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922089187.8U CN211236040U (en) | 2019-11-28 | 2019-11-28 | Powder static continuous monitor |
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| Publication Number | Publication Date |
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| CN211236040U true CN211236040U (en) | 2020-08-11 |
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| CN201922089187.8U Active CN211236040U (en) | 2019-11-28 | 2019-11-28 | Powder static continuous monitor |
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Cited By (1)
| 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 |
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2019
- 2019-11-28 CN CN201922089187.8U patent/CN211236040U/en active Active
Cited By (1)
| 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 |
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