CN106350121B - vibrating ash removal system - Google Patents
vibrating ash removal system Download PDFInfo
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- CN106350121B CN106350121B CN201610908851.5A CN201610908851A CN106350121B CN 106350121 B CN106350121 B CN 106350121B CN 201610908851 A CN201610908851 A CN 201610908851A CN 106350121 B CN106350121 B CN 106350121B
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- cylinder
- laser ranging
- rod
- ranging element
- laser
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
- C10J3/76—Water jackets; Steam boiler-jackets
Abstract
The invention discloses a rapping dust-removing system, at least comprising: the device comprises a striking rod, a cylinder and a cylinder monitoring mechanism; the striking rod is used for removing ash by vibration; the power output end of the telescopic rod of the air cylinder faces to the power input end of the impact rod; the cylinder monitoring mechanism monitors the telescopic amount of the telescopic rod of the cylinder. The telescopic rod of the air cylinder is monitored by the air cylinder monitoring mechanism, so that whether the air cylinder breaks down or not is judged, the condition that the wall surface of the gasification furnace cannot be knocked by a mechanical vibrator due to the failure of the air cylinder is avoided, and the ash removal effect is ensured.
Description
Technical Field
The invention relates to the technical field of ash removal systems, in particular to a vibration ash removal system.
Background
At present, because China has a resource distribution structure of 'more coal and oil are deficient', coal is taken as the main primary energy at present. However, due to the restriction of the conversion technology and the process means, the coal utilization process of most coal chemical industry and coal power enterprises has the problems of low utilization rate, high pollution and the like. Based on these problems, in the late 90 s of the last century, the nation began to adopt clean coal technology and to implement engineering application and popularization, and the coal gasification technology was one of the important contents of clean coal technology. In the coal gasification process, ash is easily accumulated on heat transfer surfaces such as a quenching pipe and a gas return chamber of the gasification furnace, a cylindrical membrane wall of a synthesis gas cooler, an evaporator section and the like, so that the heat transfer efficiency is greatly reduced, and the outlet temperature of the gasification furnace is greatly increased. According to the safety requirement of the whole gasification furnace system, when the temperature of the gasification furnace outlet is higher than 35 ℃, the whole system can be automatically stopped and stopped. Therefore, the problem of ash deposition on the heat transfer surface in the coal gasification process becomes a difficult problem which must be solved in order to influence the coal gasification technical system equipment.
at present, a plurality of mechanical rappers are arranged at different parts of a water-cooled wall of a gasification furnace, and the mechanical rappers are driven by a cylinder to realize automatic rapping dust removal. However, the automatic rapping dust removal system does not relate to the monitoring of whether the cylinder fails, and the automatic rapping dust removal system in batch production may cause the situation that the mechanical rapper cannot knock the wall surface of the gasification furnace due to the failure of the cylinder under the actual working condition, thereby affecting the dust removal effect.
Disclosure of Invention
The invention provides a vibration ash removal system, which solves the technical problem that whether an air cylinder fails or not in the prior art and achieves the technical effect of improving the ash removal effect.
The invention provides a rapping dust-removing system, at least comprising: the device comprises a striking rod, a cylinder and a cylinder monitoring mechanism; the striking rod is used for removing ash by vibration; the power output end of the telescopic rod of the air cylinder faces to the power input end of the impact rod; the cylinder monitoring mechanism monitors the telescopic amount of the telescopic rod of the cylinder.
Further, the cylinder monitoring mechanism includes at least: a ranging component and a processor; the distance measuring component monitors the telescopic amount of the telescopic rod of the air cylinder, and the signal output end of the distance measuring component is in communication connection with the signal input end of the processor.
Further, the distance measuring means comprises at least: the laser ranging device comprises a first light reflecting element, a second light reflecting element, a first laser ranging element and a second laser ranging element; the first laser ranging element and the second laser ranging element are arranged on the cylinder wall of the cylinder; the first light reflecting element is arranged at the contraction end of the expansion rod of the air cylinder; the second light reflecting element is arranged at the extending end of the telescopic rod of the air cylinder; the laser output end of the first laser ranging element faces the first light reflecting element; the laser output end of the second laser ranging element faces the second reflecting element; and the signal output ends of the first laser ranging element and the second laser ranging element are in communication connection with the signal input end of the processor.
Further, the laser output ends of the first laser ranging element and the second laser ranging element are opposite to each other.
Further, the output beams of the first laser ranging element and the second laser ranging element are on the same straight line.
Further, the processor includes at least:
A signal receiving module, configured to receive distance data output by the first laser ranging element and/or the second laser ranging element;
the comparison module is used for comparing the distance data output by the first laser ranging element and/or the second laser ranging element with a preset value;
And the data output module is used for outputting the comparison result.
Further, the data output module at least comprises:
The first data output unit is used for outputting a result that the cylinder has no fault if the difference value between the distance data and the preset value is within a preset range;
and the second data output unit is used for outputting the result that the air cylinder has a fault if the difference value between the distance data and the preset value is out of a preset range.
further, the method at least comprises the following steps: a guide cylinder; the striking rod is arranged in the guide cylinder; a sealing ring is arranged between the impact rod and the guide cylinder; an air inlet is formed in the guide cylinder; the air inlet is located between the first side of the seal ring and the power input end of the striker rod.
Further, the method at least comprises the following steps: a guide ring is arranged in the guide cylinder; the guide ring is sleeved on the impact rod.
Further, the method at least comprises the following steps: a load cell for monitoring air pressure at the second side of the seal ring and the air inlet.
one or more technical schemes provided by the invention at least have the following technical effects or advantages:
The telescopic rod of the cylinder is monitored through the cylinder monitoring mechanism, so that whether the cylinder breaks down or not is judged, the condition that the mechanical vibrator cannot knock the wall surface of the gasification furnace due to the failure of the cylinder is avoided, and the ash removal effect is ensured.
Drawings
Fig. 1 is a schematic view of the construction of a rapping ash removal system provided by an embodiment of the present invention;
FIG. 2 is a schematic structural view of a distance measuring part in the rapping dust-removing system provided by the embodiment of the invention;
Wherein, 1-impact rod, 2-cylinder, 3-guide cylinder, 4-seal ring, 5-air inlet, 6-guide ring, 7-piston rod, 8-spring, 9-piston, 10-piston ring, 11-Y-type seal ring, 12-filter, 13-first reflecting element, 14-second reflecting element, 15-first laser ranging element, 16-second laser ranging element, and 17-oblong hole.
Detailed Description
The embodiment of the invention provides a vibration ash removal system, solves the technical problem that whether an air cylinder fails or not in the prior art, and achieves the technical effect of improving the ash removal effect.
In order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea:
the telescopic rod of the cylinder is monitored through the cylinder monitoring mechanism, so that whether the cylinder breaks down or not is judged, the condition that the mechanical vibrator cannot knock the wall surface of the gasification furnace due to the failure of the cylinder is avoided, and the ash removal effect is ensured.
For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
referring to fig. 1, a rapping ash removal system provided by an embodiment of the present invention at least comprises: the device comprises a striking rod 1, a cylinder 2 and a cylinder monitoring mechanism; the impact rod 1 is used for removing ash by vibration; the power output end of the telescopic rod of the cylinder 2 faces the power input end of the impact rod 1; the cylinder monitoring mechanism monitors the telescopic amount of the telescopic rod of the cylinder 2.
The structure of the cylinder monitoring mechanism is explained, and the cylinder monitoring mechanism at least includes: a ranging component and a processor; the range unit monitors the flexible volume of the telescopic link of the cylinder 2, and the signal output end of the range unit is in communication connection with the signal input end of the processor.
In this embodiment, the distance measuring means includes at least: a first reflector element 13, a second reflector element 14, a first laser ranging element 15 and a second laser ranging element 16; the first laser ranging element 15 and the second laser ranging element 16 are arranged on the cylinder wall of the cylinder 2; the first reflecting element 13 is arranged at the contraction end of the telescopic rod of the cylinder 2; the second reflecting element 14 is arranged at the extended end of the telescopic rod of the cylinder 2; the laser output end of the first laser ranging element 15 faces the first reflecting element 13; the laser output end of the second laser ranging element 16 faces the second reflective element 14; the signal output ends of the first laser ranging element 15 and the second laser ranging element 16 are in communication connection with the signal input end of the processor.
In this embodiment, the reflective element is a reflector. The laser ranging element is a laser range finder. The laser output ends of the first laser ranging element 15 and the second laser ranging element 16 are opposite to each other.
further, the output beams of the first laser ranging element 15 and the second laser ranging element 16 are on the same straight line.
referring to fig. 2, an embodiment of the present invention provides a specific structure of a distance measuring component, which specifically includes:
The connecting cylinder wall of the cylinder 2 and the piston rod 7 is provided with a long elliptical hole 17. The first light reflecting member 13 and the second light reflecting member 14 are respectively provided at both ends of the oblong hole 17. When the laser ranging device is installed, the centers of the first reflecting element 13 and the second reflecting element 14 are ensured to be on the same horizontal straight line with the optical heads of the first laser ranging element 15 and the second laser ranging element 16 respectively, and the optical head axes of the first laser ranging element 15 and the second laser ranging element 16 are perpendicular to the light reflecting surfaces of the first reflecting element 13 and the second reflecting element 14 respectively.
The total length of the travel region of the telescopic rod of the cylinder 2 is set to L (fixed value), and the distance between the first laser ranging element 15 and the second laser ranging element 16 is set to M (fixed value). The distance from the first laser ranging element 15 to the first light reflecting element 13 is D1, the distance from the second laser ranging element 16 to the second light reflecting element 14 is D0, and then M is L-D0-D1.
When the telescopic rod of the cylinder 2 is at the initial position (i.e. the first laser ranging element 15 is located at the first reflective element 13), then under normal conditions, D1 is 0, and D0 is L-M.
At this time, the first laser ranging element 15 and the second laser ranging element 16 respectively send the respectively monitored D1 and D0 to the processor, and the processor judges the received D0 and D1;
If D1 ≠ 0 and D0 ≠ L-M, it is determined that there is a failure in the cylinder 2, an alarm is output to prompt an operator to check the cylinder device.
When the telescopic rod of the cylinder 2 extends to the maximum stroke (i.e. the second laser ranging element 16 is located at the second reflecting element 14), in a normal case, D0 is 0, and D1 is L-M.
At this time, the first laser ranging element 15 and the second laser ranging element 16 respectively send the respectively monitored D1 and D0 to the processor, and the processor judges the received D0 and D1;
If D0 ≠ 0 and D1 ≠ L-M, it is determined that there is a failure in the cylinder 2, an alarm is output to prompt an operator to check the cylinder device.
it should be noted here that the length of the oblong hole 17 is greater than L (i.e. the normal stroke of the telescopic rod of the cylinder 2), so as to facilitate the installation and maintenance of the reflector and the laser distance meter.
Here, it should be noted that the output mode of the laser ranging device is a pulse signal. The safety level of the laser is I level, and the hair beam or the reflected light beam of the laser cannot cause damage to human bodies.
the adjusting method of the laser ranging element comprises the following steps:
Firstly, during measurement, the laser distance measuring element is adjusted to the highest output level to eliminate stray light with non-measurement wavelength
The influence of (c).
Measurement of maximum allowable irradiation amount of eye and skin by laser ranging element, joint of measuring instrument
is placed in the beam, subject to the strongest radiation level in the beam cross-section.
Measuring the maximum circle area diameter of the maximum allowable radiation amount as the limit aperture.
Due to the requirement of an operating environment, the laser ranging element is explosion-proof.
The structure of a processor is explained, the processor comprises at least:
a signal receiving module for receiving the distance data output by the first laser ranging element 15 and/or the second laser ranging element 16;
the comparison module is used for comparing the distance data output by the first laser ranging element 15 and/or the second laser ranging element 16 with a preset value;
And the data output module is used for outputting the comparison result.
in this embodiment, the data output module at least includes:
The first data output unit is used for outputting a result that the cylinder has no fault if the difference value between the distance data and the preset value is within a preset range;
and the second data output unit is used for outputting the result that the air cylinder has a fault if the difference value between the distance data and the preset value is out of the preset range.
The structure of the embodiment of the present invention is explained, and the structure further includes at least: a guide cylinder 3; the impact rod 1 is arranged in the guide cylinder 3; a sealing ring 4 is arranged between the impact rod 1 and the guide cylinder 3; an air inlet 5 is arranged on the guide cylinder 3; an air inlet 5 is located between the first side of the o-ring 4 and the power input end of the striker rod 1.
further explaining the structure of the embodiment of the present invention, the structure further includes at least: a guide ring 6 is arranged in the guide cylinder 3; the guide ring 6 is sleeved on the impact rod 1.
Further explaining the structure of the embodiment of the present invention, the structure further includes at least: load cells for monitoring the air pressure at the second side of the sealing ring 4 and the air inlet 5.
In this embodiment, the signal output terminal of the load cell is communicatively connected to the signal input terminal of the processor.
further, the embodiment of the present invention further includes at least: a bidirectional inner sealing structure; the two-way inner seal structure at least comprises: a spring 8, a piston 9, a piston ring 10 and a Y-shaped sealing ring 11; the spring 8 is installed at the bottom of the guide cylinder 3, and by virtue of the compressibility of the spring 8, the spring 8 is allowed to have a certain compression range when the guide cylinder 3 is installed, so that the installation is very convenient and is much simpler and easier than fixed installation. The piston 9 is mounted in the guide cylinder 3. Under the working state, the inner surface of the piston 9 is tightly pressed with the first end of the piston rod 7 under the action of the pretightening force of the spring 8, so that the inner sealing effect of the position is achieved; piston rings 10 are fitted over the piston 9. A Y-ring 11 is also fitted over the piston 9. In this case, a load cell is disposed at a position a in the guide cylinder 3 for monitoring a pressure value at a position of a gap between the guide cylinder 3 and the piston 9 on the side of the striking rod 1; another load cell is arranged at position B within the gas inlet 5 for monitoring the pressure value of the nitrogen gas passing from the gas inlet 5.
In the present embodiment, the number of piston rings 10 is 4. The Y-ring 11 comprises at least two Y-rings with their lips facing in opposite directions. After the gas in the gasification furnace is sealed by adopting nitrogen with certain pressure (the pressure of the nitrogen is 0.5-0.6MPa higher than that of the gas in the gasification furnace), the self-sealing function of the Y-shaped sealing ring 11 can effectively prevent the inner leakage of the nitrogen.
The structure of the embodiment of the invention is further explained:
The telescopic rod of the cylinder 2 is in transmission connection with the piston rod 7, and the piston rod 7 is in transmission connection with the impact rod 1. A filter 12 is mounted at the power output end of the striker rod 1. Dust gas in the gasification equipment in a working state enters gaps between the piston rod 7 and the piston 9 and between the piston 9 and the guide cylinder 3 in the guide cylinder 3 after dust is filtered by the filter 12, so that the pressure of the contact position of the impact rod 1 and the piston rod 7 is ensured to be the same as the pressure in the gasification equipment, and the phenomenon of locking caused by huge pressure difference of the impact rod 1 or the piston rod 7 is effectively prevented.
the working principle of the embodiment of the invention is as follows:
When the control air source receives the air pulse signal of 0.8s, the air cylinder 2 completes one rapping stroke and automatically recovers to a preparation state to wait for the arrival of the next air pulse. Specifically, the kinetic energy emitted by the cylinder 2 impacts the piston rod 7 through the telescopic rod of the cylinder 2, the piston rod 7 transmits the kinetic energy to the impact rod 1, and the impact rod 1 impacts the heat exchange wall of the gasification furnace, so that the wall surface vibrates and sound wave oscillation is generated in the furnace. The dust removal is realized under the coupling action of wall vibration, sound wave oscillation and the two, so that the dual dust removal effect of the wall vibration and the sound wave vibration is achieved. It should be noted that when the pressure value measured by the load cell at the position a is greater than the pressure value measured by the load cell at the position B, indicating that gas leakage occurs, an alarm is issued, and the nitrogen amount introduced into the gas inlet 5 needs to be increased synchronously to perform pressure compensation.
[ technical effects ] of
1. monitoring the telescopic amount of the telescopic rod of the cylinder 2 through the cylinder monitoring mechanism, judging whether the cylinder 2 breaks down, further avoiding the occurrence of the condition that the mechanical vibrator can not knock the wall surface of the gasification furnace due to the failure of the cylinder 2, and ensuring the ash removal effect.
2. The air pressure at the second side of the sealing ring 4 and the air inlet 5 is monitored through the load cell, so that whether air leakage occurs or not can be judged, and then corresponding measures can be carried out to ensure the sealing effect.
3. By using the piston ring 10, on the one hand, the heat of the piston 9 can be conducted to the guide cylinder 3, thereby enhancing the heat dissipation, i.e. cooling, and protecting the piston 9. On the other hand, the piston 9 is prevented from being in direct contact with the inner wall of the guide cylinder 3, smooth movement of the piston 9 is guaranteed, and frictional resistance is reduced, so that frictional damage is reduced, and energy transfer efficiency is increased. In addition, the piston ring 10 also provides support and positioning for the piston 9, while also providing a seal between the piston 9 and the guide cylinder 3.
4. according to the embodiment of the invention, the guide ring 6 is used, so that the piston rod 7 is positioned, a sealing structure is formed between the piston rod 7 and the guide cylinder 3, and gas leakage is further prevented.
5. The compressed spring 8 keeps the wall surface of the gasification furnace, the impact rod 1 and the piston rod 7 in close contact, so that the energy transfer efficiency is enhanced. In addition, the spring 8 also greatly reduces the impact force generated by the periodic reciprocating motion of the piston rod 7, thereby prolonging the service life of the embodiment of the invention.
the embodiment of the invention has high automation degree, can automatically monitor whether the cylinder has a fault, does not need manual monitoring, and reduces the labor intensity. In addition, the embodiment of the invention has a multiple sealing structure, and gas leakage is effectively prevented.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
while preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
it will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A rapping ash removal system, characterized in that it comprises at least: the device comprises a striking rod, a cylinder and a cylinder monitoring mechanism; the striking rod is used for removing ash by vibration; the power output end of the telescopic rod of the air cylinder faces to the power input end of the impact rod; the cylinder monitoring mechanism monitors the telescopic amount of the telescopic rod of the cylinder, and the telescopic amount of the telescopic rod of the cylinder is monitored through the cylinder monitoring mechanism, so that whether the cylinder breaks down or not is judged; the cylinder monitoring mechanism includes at least: a ranging component and a processor; the distance measuring component monitors the telescopic amount of the telescopic rod of the air cylinder, and a signal output end of the distance measuring component is in communication connection with a signal input end of the processor; the distance measuring means at least comprises: the laser ranging device comprises a first light reflecting element, a second light reflecting element, a first laser ranging element and a second laser ranging element; the first laser ranging element and the second laser ranging element are arranged on the cylinder wall of the cylinder; the first light reflecting element is arranged at the contraction end of the expansion rod of the air cylinder; the second light reflecting element is arranged at the extending end of the telescopic rod of the air cylinder; the laser output end of the first laser ranging element faces the first light reflecting element; the laser output end of the second laser ranging element faces the second reflecting element; the signal output ends of the first laser ranging element and the second laser ranging element are in communication connection with the signal input end of the processor;
A long elliptical hole is formed in the wall of the connecting cylinder of the cylinder and the piston rod; the first light reflecting element and the second light reflecting element are respectively arranged at two ends of the oblong hole; the total length of the operation area of the telescopic rod of the air cylinder is set to be L, and the distance between the first laser ranging element and the second laser ranging element is set to be M; the distance from the first laser ranging element to the first light reflecting element is D1, the distance from the second laser ranging element to the second light reflecting element is D0, and then M is L-D0-D1;
when the telescopic rod of the cylinder is at the initial position, D1 is 0, and D0 is L-M;
the first laser ranging element and the second laser ranging element respectively send the respectively monitored D1 and D0 to the processor, and the processor judges the received D0 and D1;
If D1 is not equal to 0 and D0 is not equal to L-M, outputting an alarm;
When the telescopic rod of the cylinder extends to the maximum process, D0 is 0, and D1 is L-M;
The first laser ranging element and the second laser ranging element respectively send the respectively monitored D1 and D0 to the processor, and the processor judges the received D0 and D1;
And if D0 is not equal to 0 and D1 is not equal to L-M, outputting an alarm.
2. The system of claim 1, wherein the laser outputs of the first laser ranging element and the second laser ranging element are opposite to each other.
3. The system of claim 1, wherein the output beams of the first laser ranging element and the second laser ranging element are collinear.
4. The system of claim 1, wherein the processor comprises at least:
a signal receiving module, configured to receive distance data output by the first laser ranging element and/or the second laser ranging element;
the comparison module is used for comparing the distance data output by the first laser ranging element and/or the second laser ranging element with a preset value;
and the data output module is used for outputting the comparison result.
5. the system of claim 4, wherein the data output module comprises at least:
The first data output unit is used for outputting a result that the cylinder has no fault if the difference value between the distance data and the preset value is within a preset range;
And the second data output unit is used for outputting the result that the air cylinder has a fault if the difference value between the distance data and the preset value is out of a preset range.
6. the system according to any one of claims 1-5, further comprising at least: a guide cylinder; the striking rod is arranged in the guide cylinder; a sealing ring is arranged between the impact rod and the guide cylinder; an air inlet is formed in the guide cylinder; the air inlet is located between the first side of the seal ring and the power input end of the striker rod.
7. The system of claim 6, further comprising at least: a guide ring is arranged in the guide cylinder; the guide ring is sleeved on the impact rod.
8. The system of claim 6, further comprising at least: a load cell for monitoring air pressure at the second side of the seal ring and the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908851.5A CN106350121B (en) | 2016-10-18 | 2016-10-18 | vibrating ash removal system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908851.5A CN106350121B (en) | 2016-10-18 | 2016-10-18 | vibrating ash removal system |
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| CN106350121A CN106350121A (en) | 2017-01-25 |
| CN106350121B true CN106350121B (en) | 2019-12-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8100045B2 (en) * | 2008-10-21 | 2012-01-24 | Clark Equipment Company | Hydraulic cylinder rod position sensor |
| CN101502828B (en) * | 2009-02-26 | 2011-03-23 | 武汉工程大学 | Sealing system of mechanical rapping apparatus |
| CN102011765A (en) * | 2010-12-24 | 2011-04-13 | 厦门大学 | Hydraulic cylinder with laser-measured piston rod stroke |
| CN204164087U (en) * | 2014-10-17 | 2015-02-18 | 武汉工程职业技术学院 | A kind of oil hydraulic cylinder attachable type monitoring diagnosis device |
| CN205064737U (en) * | 2015-10-19 | 2016-03-02 | 江苏正太数控机床有限公司 | Fix a position lead screw fast |
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