CN111366214A - Device for measuring liquid level of catalyst suspension aqueous solution - Google Patents
Device for measuring liquid level of catalyst suspension aqueous solution Download PDFInfo
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- CN111366214A CN111366214A CN202010331225.0A CN202010331225A CN111366214A CN 111366214 A CN111366214 A CN 111366214A CN 202010331225 A CN202010331225 A CN 202010331225A CN 111366214 A CN111366214 A CN 111366214A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02709—Throttle passages in the form of perforated plates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/12—Cleaning arrangements; Filters
- G01F15/125—Filters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a device for measuring the liquid level of catalyst suspension aqueous solution, which comprises a pressure guiding module, a pressure guiding module and a measuring module, wherein the pressure guiding module is used for guiding the liquid level of the catalyst suspension aqueous solution; the pressure leading module comprises a back flushing water source, a rotor flow meter, a positive pressure leading pipeline and a negative pressure leading pipeline; the pressure guide module consists of a positive pressure guide pipe, a negative pressure guide pipe, a positive exhaust pipe, a negative exhaust pipe, a positive exhaust valve and a negative exhaust valve; the measuring module comprises a differential pressure transmitter and a microprocessor; firstly, the magnetic filter is arranged in the reverse-blowing water purifier, so that iron-containing impurities in the reverse-blowing water can be adsorbed, the impurities can be prevented from being adsorbed by a rotor of the rotameter, and the normal operation of the rotameter is ensured; secondly, the exhaust pipeline is arranged, so that the positive pressure guide pipe and the negative pressure guide pipe can be filled with back flushing water when liquid level measurement is carried out, and the accuracy of a liquid level measurement result is ensured; furthermore, the invention is also provided with a heat tracing module, and the back flushing water is ensured not to be incapable of being used due to freezing through the heating function of the heat tracing pipeline.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to a device for measuring the liquid level of a catalyst suspension aqueous solution.
Background
When measuring the liquid level (reserve) of the powdery metal catalyst suspension in the container, a stirring device is arranged in the container to avoid the precipitation and adhesion of the metal powder due to the existence of the metal powder; the pressure leading point and the pressure leading pipeline are generally DN15 pipes, suspension liquid enters the pipeline and is easy to block, the operation of a D-LIC-144 control loop and the execution of DCS D-SQ-TM144 sequential control are influenced, and therefore a water back flushing type measuring system is introduced.
Because of the incompressibility of liquid, the back-flushing type measuring system is superior to a back-flushing method in the aspects of accuracy and stability of measurement, and has stronger selection advantages in design, economy, safety and environmental protection compared with other types of instruments.
The traditional back-flushing type measuring system mainly comprises a water-flushing unit and a differential pressure measuring unit; the metal catalyst suspension aqueous solution containing solid powder has the property of common fluid, and can be converted into differential pressure measurement by utilizing the static pressure principle; specifically, the back flushing water is introduced into the measuring pipeline and back flushed into the container through the positive and negative pressure guide pipes and the pressure guide ports, the pressure of the liquid in the container formed at the positive and negative pressure guide ports is introduced into the positive and negative pressure sides of the pressure transmitter by the back flushing water in the pressure guide pipes, the back flushing water gravity from the positive and negative pressure guide ports to the height difference of the pressure transmitter is removed, and the pressure difference detected by the pressure difference transmitter is the differential pressure generated by the liquid level at the positive and negative pressure guide ports, so that the liquid level is converted into differential pressure measurement.
However, the above-mentioned back-flushing type measuring system still has certain disadvantages:
firstly, the water blowing medium has high iron and impurity content, which causes the rotor of the rotameter for measuring the back blowing water quantity to adsorb impurities, further causes the rotameter to be in failure, and the back blowing water quantity cannot be measured;
secondly, when the back flushing water flows through the measuring pipeline under the action of power, pressure fluctuation is easy to occur, so that the liquid level measuring result is inaccurate;
secondly, due to the properties of the liquid, bubbles are inevitably formed in the positive pressure guide pipe and the negative pressure guide pipe, so that the differential pressure measured by the differential pressure transmitter is inaccurate, and the liquid level measurement is inaccurate;
furthermore, in winter with cold north, the back flushing water can not be used due to freezing, which directly results in that the traditional back flushing water type measuring system can not be used.
Disclosure of Invention
The invention aims to provide a device for measuring the liquid level of a catalyst suspension aqueous solution, which is used for eliminating the defects of the traditional back-flushing type measuring system in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for measuring the liquid level of catalyst suspension aqueous solution comprises a pressure guiding module, a pressure guiding module and a measuring module;
the pressure leading module comprises a back flushing water source, a rotor flow meter, a positive pressure leading pipeline and a negative pressure leading pipeline; the back-flushing water source is used for supplying back-flushing water to the positive pressure-leading pipeline and the negative pressure-leading pipeline, and the rotor flowmeter is used for measuring the back-flushing water quantity introduced into the positive pressure-leading pipeline and the negative pressure-leading pipeline; the input end of the rotor flowmeter is connected with the output end of a back flushing water source; the positive pressure leading pipeline and the negative pressure leading pipeline are respectively connected with a positive pressure leading port and a negative pressure leading port of the catalyst suspension aqueous solution container in a sealing way, and the connecting parts of the positive pressure leading pipeline and the negative pressure leading pipeline with the positive pressure leading port and the negative pressure leading port of the catalyst suspension aqueous solution container are respectively provided with a stop valve;
the pressure guide module consists of a positive pressure guide pipe, a negative pressure guide pipe, a positive exhaust pipe, a negative exhaust pipe, a positive exhaust valve and a negative exhaust valve; the positive pressure guiding pipeline and the negative pressure guiding pipeline are respectively provided with a pressure guiding three-way joint for guiding out the pressure guiding pipeline, and particularly are respectively connected with the positive pressure guiding pipe and the negative pressure guiding pipe; the positive pressure pipe and the negative pressure pipe are respectively provided with an exhaust tee joint for leading out an exhaust pipeline, and are specifically used for being respectively connected with a positive exhaust pipe and a negative exhaust pipe, the positive exhaust pipe and the negative exhaust pipe are respectively provided with an exhaust valve, and further, the tail ends of the positive exhaust pipe and the negative exhaust pipe are respectively provided with a stop valve and a plug;
the measuring module comprises a differential pressure transmitter and a microprocessor, and the tail ends of the positive pressure guide pipe and the negative pressure guide pipe are respectively communicated with the positive pressure side and the negative pressure side of the differential pressure transmitter in a sealing way; the pressure difference transmitter is used for acquiring liquid level pressure difference signals of the positive pressure guide pipe and the negative pressure guide pipe and sending the liquid level pressure difference signals to the microprocessor; and the microprocessor is used for converting the differential pressure signal into a liquid level signal of the catalyst suspension aqueous solution container according to the received differential pressure signal.
The heat tracing module is also included; the heat tracing module consists of a heat tracing source, a heat tracing pipeline, a heat insulation box and a drain valve; the heat tracing source is used for providing low-pressure steam for a heat tracing loop formed by the heat tracing pipeline and the heat insulation box; the heat tracing pipeline is adjacently and parallelly arranged with the positive pressure guide pipe, the negative pressure guide pipe, the positive exhaust pipe and the negative exhaust pipe, and the heat tracing pipe is used for heating the positive pressure guide pipe, the negative pressure guide pipe, the positive exhaust pipe and the negative exhaust pipe; the heat tracing source is arranged at the starting end of the heat tracing pipeline, and the drain valve is arranged at the tail end of the heat tracing pipeline.
The front ends of the positive pressure-leading pipeline and the negative pressure-leading pipeline are provided with magnetic filters.
And the front ends of the positive pressure-leading pipeline and the negative pressure-leading pipeline are provided with a flow-limiting orifice plate.
Needle valves are arranged at the front ends of the positive pressure-leading pipeline and the negative pressure-leading pipeline.
The heat tracing pipeline is arranged adjacent to the positive pressure guide pipe, the negative pressure guide pipe, the positive exhaust pipe and the negative exhaust pipe in parallel in the following mode: the positive pressure guide pipe and the negative pressure guide pipe are adjacently arranged in parallel, the exhaust tee joints on the positive pressure guide pipe and the negative pressure guide pipe are arranged at corresponding positions, and the positive exhaust pipe and the negative exhaust pipe are adjacently arranged in parallel; the heat tracing pipeline is arranged between the positive pressure guide pipe and the negative pressure guide pipe through a pipeline connecting piece and is parallel to the positive pressure guide pipe and the negative pressure guide pipe, and the heat tracing pipeline is arranged between the positive exhaust pipe and the negative exhaust pipe through a pipeline connecting piece and is parallel to the positive exhaust pipe and the negative exhaust pipe.
The differential pressure transmitter is arranged in the heat preservation box body.
The center distance between the positive pressure guiding port and the negative pressure guiding port is 810 mm.
The invention has the beneficial effects that:
firstly, the magnetic filters are arranged at the front ends of the positive pressure pipeline and the negative pressure pipeline, and can adsorb iron-containing impurities in the back flushing water, so that the rotors of the rotameters are prevented from adsorbing the impurities, and the normal operation of the rotameters is ensured;
secondly, the front ends of the positive pressure guide pipeline and the negative pressure guide pipeline are also provided with the flow limiting pore plates, so that the back flushing water can be further stabilized in pressure and flow, the pressure fluctuation of the back flushing water in the pipelines is prevented, and the accuracy of liquid level measurement results is ensured;
secondly, the guide pressure module is provided with the exhaust pipeline, so that the positive guide pressure pipe and the negative guide pressure pipe can be filled with back flushing water during liquid level measurement, and the accuracy of a liquid level measurement result is further ensured;
furthermore, the invention is also provided with a heat tracing module, and the back flushing water is ensured not to be incapable of being used due to freezing through the heating function of the heat tracing pipeline.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the heat tracing module of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
The invention relates to a device for measuring the liquid level of a catalyst suspension aqueous solution, which comprises a pressure guiding module, a pressure guiding module and a measuring module; the pressure guide module is used for introducing back flushing water into the catalyst suspension aqueous solution container 1; the pressure guide module is used for feeding back the back flushing water pressure difference fed back by the catalyst suspension water solution container 1; the measuring module is used for measuring the liquid level of the catalyst suspended aqueous solution in the catalyst suspended aqueous solution container 1 according to the back flushing water pressure difference;
as shown in fig. 1, specifically:
the pressure guiding module comprises a back flushing water source 4, a rotor flowmeter 5, a positive pressure guiding pipeline 11 and a negative pressure guiding pipeline 12; the back flushing water source 4 is used for supplying back flushing water to the positive pressure leading pipeline 11 and the negative pressure leading pipeline 12, and the rotor flowmeter 5 is used for measuring the back flushing water quantity introduced into the positive pressure leading pipeline 11 and the negative pressure leading pipeline 12; the input end of the rotor flowmeter 5 is connected with the output end of the back flushing water source 4; the positive pressure leading pipeline 11 and the negative pressure leading pipeline 12 are respectively connected with a positive pressure leading port and a negative pressure leading port of the catalyst suspension aqueous solution container 1 in a sealing manner, and stop valves are arranged at the joints of the positive pressure leading pipeline 11 and the negative pressure leading pipeline 12 and the positive pressure leading port and the negative pressure leading port of the catalyst suspension aqueous solution container 1; further, in order to maintain the stability of the pressure of the back flushing water in the positive pressure guiding pipeline 11 and the negative pressure guiding pipeline 12, the arrangement of the positive pressure guiding pipeline 11 and the negative pressure guiding pipeline 12 should follow the horizontal, flat and vertical arrangement principle; in order to ensure the pressure balance in the positive pressure leading pipeline 11 and the negative pressure leading pipeline 12, the positive pressure leading pipeline 11 and the negative pressure leading pipeline 12 are preferably arranged adjacently, in equal height and in parallel; it should be noted that: when the rotor flowmeter 5 is installed, the verticality of the rotor flowmeter 5 is better than 2 degrees, so that the excessive friction between a rotor of the rotor flowmeter 5 and a pipeline caused by poor verticality is avoided; when the rotameter 5 is installed, the front and rear straight pipe sections need to meet the requirement of being more than or equal to 5D, so that the normal operation of the rotameter 5 is prevented from being influenced by pulsating flow;
the pressure guide module consists of a positive pressure guide pipe 21, a negative pressure guide pipe 22, a positive exhaust pipe 31, a negative exhaust pipe 32, a positive exhaust valve and a negative exhaust valve; the positive pressure guiding pipeline 11 and the negative pressure guiding pipeline 12 are both provided with pressure guiding three-way joints 2 for leading out the pressure guiding pipelines, and specifically for respectively connecting the positive pressure guiding pipe 21 and the negative pressure guiding pipe 22; the positive pressure pipe 21 and the negative pressure pipe 22 are both provided with an exhaust three-way joint 3 for leading out an exhaust pipeline, and further, the tail ends of the positive exhaust pipe 31 and the negative exhaust pipe 32 are both provided with a stop valve and a plug; specifically, the exhaust pipe is used for being connected with a positive exhaust pipe 31 and a negative exhaust pipe 32 respectively, and exhaust valves are arranged on the positive exhaust pipe 31 and the negative exhaust pipe 32; because, during the measurement, the back flushing water must fill the positive pressure guiding pipe 21 and the negative pressure guiding pipe 22, but if the back flushing water pressure difference fed back by the catalyst suspension water solution container 1 is insufficient, or bubbles are generated in the positive air exhaust pipe 31 and the negative air exhaust pipe 32 due to the liquid property of the back flushing water, the back flushing water in the positive air exhaust pipe 31 and the negative air exhaust pipe 32 cannot fill; at this time, the stop valves at the positive pressure-leading port and the negative pressure-leading port of the catalyst suspension aqueous solution container 1 can be closed, the stop valves and the exhaust valves at the tail ends of the positive exhaust pipe 31 and the negative exhaust pipe 32 are opened, and the flow of the back flushing water is adjusted to enable the back flushing water to flow out of the exhaust valves, so that the back flushing water is ensured to be filled in the positive pressure guide pipe 21 and the negative pressure guide pipe 22; further, in order to maintain the stability of the pressure of the back flushing water in the positive pressure guide pipe 21 and the negative pressure guide pipe 22, the arrangement of the positive pressure guide pipe 21 and the negative pressure guide pipe 22 follows the horizontal, flat and vertical arrangement principle; in order to balance the pressures in the positive pressure guiding pipe 21 and the negative pressure guiding pipe 22, the positive pressure guiding pipe 21 and the negative pressure guiding pipe 22 are preferably arranged adjacently, at the same height, and in parallel; the center distance between the positive pressure guiding port and the negative pressure guiding port and the center distance between the negative pressure guiding port and the positive pressure guiding port are preferably 810 millimeters;
the measuring module comprises a differential pressure transmitter 8 and a microprocessor, and the tail ends of the positive pressure guide pipe 21 and the negative pressure guide pipe 22 are respectively communicated with the positive pressure side and the negative pressure side of the differential pressure transmitter 8 in a sealing way; the differential pressure transmitter 8 is used for acquiring liquid level differential pressure signals of the positive pressure guide pipe 21 and the negative pressure guide pipe and sending the liquid level differential pressure signals to the microprocessor; the microprocessor is used for converting the differential pressure signal into a liquid level signal of the catalyst suspension aqueous solution container 1 according to the received differential pressure signal; further, the microprocessor can adopt a PLC (programmable logic controller) or a singlechip with a display module so as to facilitate the operator to visually observe the liquid level of the catalyst suspension aqueous solution in the catalyst suspension aqueous solution container 1.
Preferably, the device for measuring the liquid level of the catalyst suspension aqueous solution further comprises a heat tracing module; as shown in fig. 2, the dotted line in fig. 2 is a heat tracing module; the heat tracing module consists of a heat tracing source 9, a heat tracing pipeline 10, a heat insulation box 13 and a drain valve 14; the heat tracing source 9 is arranged at the starting end of the heat tracing pipeline and is used for providing low-pressure steam for a heat tracing loop formed by the heat tracing pipeline 10 and the heat preservation box 13; the drain valve 14 is arranged at the tail end of the heat-tracing pipeline 10 and is used for draining condensed water generated in the heat-tracing pipeline 10; a copper pipe is wound in the heat insulation box 13, and when low-pressure steam passes through the copper pipe, the normal temperature in the heat insulation box can be ensured, and the water in a measuring chamber of the differential pressure transmitter 8 is prevented from freezing; the heat tracing pipeline 10 is adjacently and parallelly arranged with the positive pressure guide pipe 21, the negative pressure guide pipe 22, the positive exhaust pipe 31 and the negative exhaust pipe 32, and the heat tracing pipeline is used for heating the positive pressure guide pipe 21, the negative pressure guide pipe 22, the positive exhaust pipe 31 and the negative exhaust pipe 32; further, the heat tracing pipeline 10 is arranged adjacent to and in parallel with the positive pressure guiding pipe 21, the negative pressure guiding pipe 22, the positive exhaust pipe 31 and the negative exhaust pipe 32 in the following manner: the positive pressure guide pipe 21 and the negative pressure guide pipe 22 are arranged adjacently and parallelly, the exhaust three-way joint 3 on the positive pressure guide pipe 21 and the negative pressure guide pipe 22 is arranged at the corresponding position, and the positive exhaust pipe 31 and the negative exhaust pipe 32 are arranged adjacently and parallelly; the heat tracing pipeline 10 is arranged between the positive pressure guide pipe 21 and the negative pressure guide pipe 22 through a pipeline connecting piece and is parallel to the positive pressure guide pipe 21 and the negative pressure guide pipe 22, and the heat tracing pipeline 10 is also arranged between the positive exhaust pipe 31 and the negative exhaust pipe 32 through a pipeline connecting piece and is parallel to the positive exhaust pipe 31 and the negative exhaust pipe 32; specifically, the heat tracing source 9 is arranged at a high point, the heat tracing pipeline 10 is led out downwards and arranged between the positive exhaust pipe 31 and the negative exhaust pipe 32, the heat tracing pipeline 10 is provided with a heat tracing three-way joint, the heat tracing pipeline 10 is divided into two branches, one branch passes through a copper pipe in the heat insulation box 13, the other branch is arranged between the positive pressure guide pipe 21 and the negative pressure guide pipe 22, then the two branch heat tracing pipelines 10 are converged, and the tail end of the two branch heat tracing pipelines is provided with a drain valve 14; in order to further ensure the heat preservation capability of the heat tracing module, the heat tracing pipeline 10 can be wrapped with the adjacent positive pressure guide pipe 21, the adjacent negative pressure guide pipe 22, the adjacent positive exhaust pipe 31 and the adjacent negative exhaust pipe 32 through heat preservation materials; the heat-insulating material can be selected from asbestos ropes, glass fiber cloth and the like.
Preferably, the front ends of the positive pressure lead pipe 11 and the negative pressure lead pipe 12 are both provided with a magnetic filter 7; because the back-blowing water (water-blowing medium) contains high iron and impurities, the rotor of the rotameter 5 for measuring the back-blowing water quantity adsorbs the impurities, so that the rotameter 5 fails and the back-blowing water quantity cannot be measured; and magnetic filter 7 can be good the iron content impurity of absorption blowback aquatic, prevents that rotameter 5 from breaking down.
Preferably, the front ends of the positive pressure pipeline 11 and the negative pressure pipeline 12 are both provided with a flow limiting orifice plate 6, so that the back flushing water in the positive pressure pipeline 11 and the negative pressure pipeline 12 is further subjected to pressure stabilization and flow stabilization, and the accuracy of the measurement result is ensured.
Preferably, needle valves are arranged at the front ends of the positive pressure lead pipe 11 and the negative pressure lead pipe 12, so that the back flushing water amount can be accurately adjusted.
Preferably, differential pressure transmitter 8 set up in heat-preserving box 13 box to guarantee that differential pressure transmitter 8 can normal use under the low temperature condition.
The device for measuring the liquid level of the catalyst suspension aqueous solution has the beneficial effects that:
firstly, the magnetic filter 7 is arranged at the front ends of the positive pressure lead line 11 and the negative pressure lead line 12, and can adsorb iron-containing impurities in the back flushing water, so that the rotor of the rotameter 5 is prevented from adsorbing the impurities, and the normal operation of the rotameter 5 is ensured;
secondly, the front ends of the positive pressure leading pipeline 11 and the negative pressure leading pipeline 12 are also provided with the flow limiting pore plates 6, so that the back flushing water can be further stabilized and stabilized, the pressure fluctuation of the back flushing water in the pipelines is prevented, and the accuracy of a liquid level measurement result is ensured;
secondly, the guide pressure module is provided with an exhaust pipeline, so that the positive guide pressure pipe 21 and the negative guide pressure pipe 22 can be filled with back flushing water during liquid level measurement, and the accuracy of a liquid level measurement result is further ensured;
furthermore, the invention is also provided with a heat tracing module, and the back flushing water can be ensured not to be incapable of being used due to freezing through the heating function of the heat tracing pipeline 10.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a device that is used for catalyst suspension aqueous solution level measurement which characterized in that: the device comprises a pressure guiding module, a pressure guiding module and a measuring module;
the pressure leading module comprises a back flushing water source, a rotor flow meter, a positive pressure leading pipeline and a negative pressure leading pipeline; the back-flushing water source is used for supplying back-flushing water to the positive pressure-leading pipeline and the negative pressure-leading pipeline, and the rotor flowmeter is used for measuring the back-flushing water quantity introduced into the positive pressure-leading pipeline and the negative pressure-leading pipeline; the input end of the rotor flowmeter is connected with the output end of a back flushing water source; the positive pressure leading pipeline and the negative pressure leading pipeline are respectively connected with a positive pressure leading port and a negative pressure leading port of the catalyst suspension aqueous solution container in a sealing way, and the connecting parts of the positive pressure leading pipeline and the negative pressure leading pipeline with the positive pressure leading port and the negative pressure leading port of the catalyst suspension aqueous solution container are respectively provided with a stop valve;
the pressure guide module consists of a positive pressure guide pipe, a negative pressure guide pipe, a positive exhaust pipe, a negative exhaust pipe, a positive exhaust valve and a negative exhaust valve; the positive pressure guiding pipeline and the negative pressure guiding pipeline are respectively provided with a pressure guiding three-way joint for guiding out the pressure guiding pipeline, and particularly are respectively connected with the positive pressure guiding pipe and the negative pressure guiding pipe; the positive pressure pipe and the negative pressure pipe are respectively provided with an exhaust tee joint for leading out an exhaust pipeline, and are specifically used for being respectively connected with a positive exhaust pipe and a negative exhaust pipe, the positive exhaust pipe and the negative exhaust pipe are respectively provided with an exhaust valve, and further, the tail ends of the positive exhaust pipe and the negative exhaust pipe are respectively provided with a stop valve and a plug;
the measuring module comprises a differential pressure transmitter and a microprocessor, and the tail ends of the positive pressure guide pipe and the negative pressure guide pipe are respectively communicated with the positive pressure side and the negative pressure side of the differential pressure transmitter in a sealing way; the pressure difference transmitter is used for acquiring liquid level pressure difference signals of the positive pressure guide pipe and the negative pressure guide pipe and sending the liquid level pressure difference signals to the microprocessor; and the microprocessor is used for converting the differential pressure signal into a liquid level signal of the catalyst suspension aqueous solution container according to the received differential pressure signal.
2. The device for measuring the liquid level of the catalyst suspension aqueous solution according to claim 1, wherein: the heat tracing module is also included; the heat tracing module consists of a heat tracing source, a heat tracing pipeline, a heat insulation box and a drain valve; the heat tracing source is used for providing low-pressure steam for a heat tracing loop formed by the heat tracing pipeline and the heat insulation box; the heat tracing pipeline is adjacently and parallelly arranged with the positive pressure guide pipe, the negative pressure guide pipe, the positive exhaust pipe and the negative exhaust pipe, and the heat tracing pipe is used for heating the positive pressure guide pipe, the negative pressure guide pipe, the positive exhaust pipe and the negative exhaust pipe; the heat tracing source is arranged at the starting end of the heat tracing pipeline, and the drain valve is arranged at the tail end of the heat tracing pipeline.
3. The device for measuring the liquid level of the catalyst suspension aqueous solution according to claim 1, wherein: the front ends of the positive pressure-leading pipeline and the negative pressure-leading pipeline are provided with magnetic filters.
4. The apparatus of claim 3, wherein: and the front ends of the positive pressure-leading pipeline and the negative pressure-leading pipeline are provided with a flow-limiting orifice plate.
5. The device for measuring the liquid level of the catalyst suspension aqueous solution as claimed in claim 4, wherein: needle valves are arranged at the front ends of the positive pressure-leading pipeline and the negative pressure-leading pipeline.
6. The device for measuring the liquid level of the catalyst suspension aqueous solution as claimed in claim 2, wherein: the heat tracing pipeline is arranged adjacent to the positive pressure guide pipe, the negative pressure guide pipe, the positive exhaust pipe and the negative exhaust pipe in parallel in the following mode: the positive pressure guide pipe and the negative pressure guide pipe are adjacently arranged in parallel, the exhaust tee joints on the positive pressure guide pipe and the negative pressure guide pipe are arranged at corresponding positions, and the positive exhaust pipe and the negative exhaust pipe are adjacently arranged in parallel; the heat tracing pipeline is arranged between the positive pressure guide pipe and the negative pressure guide pipe through a pipeline connecting piece and is parallel to the positive pressure guide pipe and the negative pressure guide pipe, and the heat tracing pipeline is arranged between the positive exhaust pipe and the negative exhaust pipe through a pipeline connecting piece and is parallel to the positive exhaust pipe and the negative exhaust pipe.
7. The device for measuring the liquid level of the catalyst suspension aqueous solution as claimed in claim 2, wherein: the differential pressure transmitter is arranged in the heat preservation box body.
8. The device for measuring the liquid level of the catalyst suspension aqueous solution according to claim 1, wherein: the center distance between the positive pressure guiding port and the negative pressure guiding port is 810 mm.
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| CN201199168Y (en) * | 2008-04-30 | 2009-02-25 | 山东金诚重油化工有限公司 | Block-resistant structure for liquid level meter on decompression tower bottom |
| CN201561721U (en) * | 2009-11-26 | 2010-08-25 | 中交第一航务工程勘察设计院有限公司 | Magnetic suspension type water-level layering and settling dual-purpose meter |
| CN202648754U (en) * | 2012-06-25 | 2013-01-02 | 中国十七冶集团有限公司 | High-viscosity medium liquid level measuring device |
| JP2014041023A (en) * | 2012-08-21 | 2014-03-06 | Hitachi Ltd | Reactor water-level meter |
| CN203148508U (en) * | 2013-03-12 | 2013-08-21 | 华油天然气广安有限公司 | Pressure-leading device of transmitter for measuring liquid level in LNG production equipment |
| CN103913210A (en) * | 2014-04-24 | 2014-07-09 | 上海隧道工程股份有限公司 | Automatic measuring device of concrete casting rise height |
| CN105446252A (en) * | 2014-09-26 | 2016-03-30 | 上海孚凌自动化控制***有限公司 | Liquid level measurement device and gas intrusive liquid level measurement system thereof |
| CN208567986U (en) * | 2018-08-03 | 2019-03-01 | 上海科洋科技股份有限公司 | A kind of flowmeter |
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