CN213956912U - Comprehensive protection system for automatic liquid level measuring device of asphalt reaction kettle - Google Patents
Comprehensive protection system for automatic liquid level measuring device of asphalt reaction kettle Download PDFInfo
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- CN213956912U CN213956912U CN202022649366.5U CN202022649366U CN213956912U CN 213956912 U CN213956912 U CN 213956912U CN 202022649366 U CN202022649366 U CN 202022649366U CN 213956912 U CN213956912 U CN 213956912U
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Abstract
The utility model provides a comprehensive protection system for automatic liquid level measurement device of pitch reation kettle, including heat conduction oil pipe line and medium temperature steam pipeline, two sets of pipelines are right from this jacket gate valve among the liquid level measurement device and double-layered shell type sampling pipe carry out the companion heat. The system also comprises a jacket sampling pipe temperature instrument, a medium-temperature steam pipeline temperature instrument and a heat conducting oil pipeline temperature instrument; a jacket sampling pipe temperature instrument is arranged on the jacket sampling pipe, a medium-temperature steam pipeline temperature instrument is arranged on a medium-temperature steam pipeline, and a heat-conducting oil pipeline temperature instrument is arranged on a heat-conducting oil pipeline; also comprises automatic control valves respectively arranged on the heat-conducting oil pipeline and the medium-temperature steam pipeline. Selecting a heat source nearby according to the type of a medium heat source of the asphalt process to carry out heat tracing control on a jacketed gate valve and a jacketed sampling pipe in a sampling system; two heat sources are provided, automatic switching can be realized according to the conditions of the heat sources, and continuous, stable and accurate measurement of the liquid level of the remote transmission flange liquid level transmitter can be ensured.
Description
Technical Field
The utility model relates to a tar processing technology and high temperature pitch chemical production technology technical field, in particular to a comprehensive protection system for automatic liquid level measurement device of pitch reation kettle.
Background
The medium temperature asphalt with the softening point of 75-90 ℃ is sent to an asphalt reaction kettle to be further heated, the medium temperature asphalt is further subjected to thermal polymerization and thermal condensation reaction to form aromatic hydrocarbon compounds with higher molecules, a part of substances with low boiling point is evaporated out, the softening point of the asphalt is improved, and the high temperature asphalt is obtained. The temperature in the asphalt reaction kettle is kept between 350 ℃ and 390 ℃, and can reach more than 400 ℃ under extreme conditions. The liquid level parameter of the asphalt reaction kettle is an important process parameter, and in order to ensure the reaction time of asphalt and the amount of added reaction gas, prevent the semi-coke generation caused by overhigh temperature due to low liquid level of the asphalt reaction kettle and prevent the charging of the asphalt reaction kettle from exceeding the upper limit, the accurate liquid level of the reaction kettle must be accurately known. The traditional liquid level measurement adopts a ray method, the measurement precision is high, but the investment cost is high, professional personnel are required for maintenance, ray radiation can cause personal physical injury and cause safety accidents, so that few users are willing to use the mode for measuring the liquid level at present. In addition, a common method for measuring the liquid level is to use a remote flange liquid level transmitter to measure the liquid level. The medium temperature of the asphalt reaction kettle is up to more than 350 ℃, the temperature resistance of high-temperature silicone oil adopted by the remote-transmission flange liquid level transmitter can also reach 310 ℃ at most, a radiator is required to be adopted for a measurement sampling pipe to ensure that the temperature is reduced to below 310 ℃, meanwhile, the temperature is required to be controlled to be more than 210 ℃ to ensure the fluidity of the asphalt medium due to the fact that the softening point of high-temperature asphalt is more than 150 ℃, and therefore the temperature of an asphalt sampling system is strictly controlled to be between 210 ℃ and 310 ℃, and continuous, stable and accurate measurement of the liquid level of the remote-transmission flange liquid level transmitter can be ensured.
Chinese patent publication No. CN 109945951 discloses a system for measuring asphalt liquid level in a reaction kettle and a method for using the same, which have the following technical defects:
1) only one heat source is provided, and when the heat source fails, the heating of the liquid level detection device cannot be guaranteed;
2) the temperature of a pipeline at the front end of the liquid level meter is only detected, the temperature of a heat source is not monitored, and the pipeline cannot be switched when the temperature of the heat source does not meet the heat tracing requirement;
3) the valve at the front end of the liquid level transmitter is not subjected to heat tracing;
the technical defects lead to the fact that the continuous, stable and accurate measurement of the liquid level of the remote transmission flange liquid level transmitter cannot be guaranteed.
Disclosure of Invention
In order to solve the technical problem provided by the background technology, the utility model provides a comprehensive protection system for an automatic liquid level measuring device of an asphalt reaction kettle, which selects a heat source to carry out heat tracing control on a jacketed gate valve and a jacketed sampling pipe in a sampling system according to the type of a medium heat source of an asphalt process; the heat source is selected from heat conduction oil and superheated steam, two heat sources can be provided, automatic switching can be realized according to the heat source condition, and continuous, stable and accurate measurement of the liquid level of the remote transmission flange liquid level transmitter can be ensured.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a comprehensive protection system for automatic liquid level measurement device of pitch reation kettle, liquid level measurement device include jacketed sampling pipe and set up the liquid level changer on jacketed sampling pipe, liquid level changer's front end still is provided with jacketed gate valve.
The comprehensive protection system comprises a heat-conducting oil pipeline and a medium-temperature steam pipeline, and therefore the two pipelines carry out heat tracing on a jacket gate valve and a jacket type sampling pipe in the liquid level measuring device.
The comprehensive protection system also comprises a jacket sampling pipe temperature instrument TRSA01, a medium-temperature steam pipeline temperature instrument TRSA02 and a heat-conducting oil pipeline temperature instrument TRSA 03; a jacket sampling pipe temperature instrument TRSA01 is arranged on the jacket sampling pipe, a medium-temperature steam pipeline temperature instrument TRSA02 is arranged on a medium-temperature steam pipeline, and a heat-conducting oil pipeline temperature instrument TRSA03 is arranged on a heat-conducting oil pipeline; also comprises automatic control valves respectively arranged on the heat-conducting oil pipeline and the medium-temperature steam pipeline.
The temperature instrument and the automatic control valve are both connected to the DCS control system and are controlled by the DCS control system; switching a heat tracing heat source or giving an alarm by a DCS control system according to the temperature conditions of a medium-temperature steam pipeline temperature instrument TRSA02 and a heat conducting oil pipeline temperature instrument TRSA 03; automatic control valves on the heat transfer oil line and the medium temperature steam line are opened or closed according to the temperature condition of the sampling pipe temperature instrument TRSA 01.
Further, the automatic control valves arranged on the heat-conducting oil pipeline comprise a jacket gate valve heat-conducting oil inlet automatic control valve XZV01, a jacket sampling pipe heat-conducting oil inlet automatic control valve XZV03, a jacket gate valve heat-conducting oil outlet automatic control valve XZV05 and a jacket sampling pipe heat-conducting oil outlet automatic control valve XZV 07.
Further, the automatic control valves arranged on the medium-temperature steam pipeline comprise a jacket gate valve medium-temperature steam inlet automatic control valve XZV02, a jacket sampling pipe medium-temperature steam inlet automatic control valve XZV04, a jacket gate valve medium-temperature steam outlet automatic control valve XZV06 and a jacket sampling pipe medium-temperature steam outlet automatic control valve XZV 08.
Furthermore, a jacket gate valve heat conduction oil inlet manual control valve HV01 and a jacket sampling pipe heat conduction oil inlet manual control valve HV03 are further arranged on the heat conduction oil pipeline and used for manually adjusting the inlet flow and the outlet flow of the heat conduction oil pipeline.
Furthermore, a jacket gate valve medium-temperature steam inlet manual control valve HV02 and a jacket sampling pipe medium-temperature steam inlet manual control valve HV04 are arranged on the medium-temperature steam pipeline and used for manually adjusting the inlet and outlet flow of the medium-temperature steam pipeline.
Furthermore, the integrated protection system also comprises a radiator arranged between the jacketed gate valve and the liquid level transmitter.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model selects the heat source to carry out heat tracing control on the jacketed gate valve and the jacketed sampling pipe in the sampling system according to the type of the medium heat source in the asphalt process; the heat source is selected from heat conduction oil and superheated steam, two heat sources can be provided, automatic switching can be realized according to the heat source condition, and continuous, stable and accurate measurement of the liquid level of the remote transmission flange liquid level transmitter can be ensured.
Drawings
Fig. 1 is the utility model discloses a comprehensive protection system structure sketch map for automatic liquid level measurement device of pitch reation kettle.
In the figure: 1-jacketed gate valve 2-radiator 3-jacket sampling pipe 4-remote-transmission flange liquid level transmitter 5-emptying valve 6-jacket gate valve heat-conducting oil inlet automatic control valve XZV 017-jacket gate valve intermediate-temperature steam inlet automatic control valve XZV 028-jacket sampling pipe heat-conducting oil inlet automatic control valve XZV 039-jacket sampling pipe intermediate-temperature steam inlet automatic control valve XZV 0410-jacket gate valve heat-conducting oil outlet automatic control valve XZV 0511-jacket gate valve intermediate-temperature steam outlet automatic control valve XZV 0612-jacket sampling pipe heat-conducting oil outlet automatic control valve XZV 0713-jacket sampling pipe intermediate-temperature steam outlet automatic control valve XZV 0814-jacket gate valve heat-conducting oil inlet manual control valve 0115-jacket gate valve intermediate-temperature steam inlet manual control valve 0210216-jacket sampling pipe heat-conducting oil inlet manual control valve HV 0317-jacket sampling pipe intermediate-temperature steam inlet manual control valve 0418-jacket sampling pipe temperature Instrument TRSA 0119, medium temperature steam pipeline temperature instrument TRSA 0220, heat conducting oil pipeline temperature instrument TRSA 0321, medium temperature steam air supply pipeline 22, heat conducting oil supply pipeline 23, condensed water drain pipeline 24, heat conducting oil return pipeline 25 and capillary.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in figure 1, a comprehensive protection system for an automatic liquid level measuring device of an asphalt reaction kettle, wherein the liquid level measuring device comprises a jacketed sampling pipe 3 and a remote-transmission flange liquid level transmitter 4 arranged on the jacketed sampling pipe 3, and the front end of the liquid level transmitter 4 is also provided with a jacketed gate valve 1.
The comprehensive protection system comprises a heat conducting oil pipeline 22 and a medium temperature steam pipeline 21, wherein the two pipelines carry out heat tracing on a jacket gate valve 1 and a jacket type sampling pipe 3 in the liquid level measuring device, the comprehensive protection system also comprises a radiator 2 arranged between the jacket type gate valve 1 and the liquid level transmitter 4, and the radiator 2 is used for radiating to reduce the temperature of a high temperature asphalt medium.
The comprehensive protection system also comprises a jacket sampling pipe temperature instrument TRSA0118, a medium-temperature steam pipeline temperature instrument TRSA0219 and a heat-conducting oil pipeline temperature instrument TRSA 0320; a jacket sampling pipe temperature instrument TRSA0118 is arranged on the jacket sampling pipe 3, a medium-temperature steam pipeline temperature instrument TRSA0219 is arranged on a medium-temperature steam pipeline 21, and a heat-conducting oil pipeline temperature instrument TRSA0320 is arranged on a heat-conducting oil pipeline 22; and further includes automatic control valves provided on the heat transfer oil line 22 and the medium temperature steam line 21, respectively. The temperature instrument and the automatic control valve are both connected to the DCS control system and are controlled by the DCS control system; switching a heat tracing source or giving an alarm by a DCS control system according to the temperature conditions of a medium-temperature steam pipeline temperature instrument TRSA0219 and a heat conducting oil pipeline temperature instrument TRSA 0320; automatic control valves on the hot oil line 22 and the medium temperature steam line 21 are opened or closed according to the temperature condition of the sample tube temperature meter TRSA 0118.
The automatic control valves arranged on the heat conducting oil pipeline 22 comprise a jacket gate valve heat conducting oil inlet automatic control valve XZV016, a jacket sampling pipe heat conducting oil inlet automatic control valve XZV038, a jacket gate valve heat conducting oil outlet automatic control valve XZV0510 and a jacket sampling pipe heat conducting oil outlet automatic control valve XZV 0712. The heat conducting oil pipeline 22 is also provided with a jacket gate valve heat conducting oil inlet manual control valve HV0114 and a jacket sampling pipe heat conducting oil inlet manual control valve HV0316 for manually adjusting the inlet and outlet flow of the heat conducting oil pipeline 22.
The automatic control valves arranged on the medium-temperature steam pipeline 21 comprise a jacket gate valve medium-temperature steam inlet automatic control valve XZV027, a jacket sampling pipe medium-temperature steam inlet automatic control valve XZV049, a jacket gate valve medium-temperature steam outlet automatic control valve XZV0611 and a jacket sampling pipe medium-temperature steam outlet automatic control valve XZV 0813. The medium temperature steam pipeline 21 is also provided with a jacket gate valve medium temperature steam inlet manual control valve HV0215 and a jacket sampling pipe medium temperature steam inlet manual control valve HV0417 which are used for manually adjusting the inlet and outlet flow of the medium temperature steam pipeline 21.
1. The temperature control process of the jacket sampling pipe is as follows: when the TRSA0118 temperature is low (for example less than 100 ℃), the heat tracing source of the jacket gate valve 1 is firstly opened to control the valve and the corresponding heat tracing return valve. If the TRSA0118 temperature is still low, the heat tracing source control valve and the corresponding heat tracing return valve of the jacket sampling pipe 3 are further opened. When the TRSA0118 temperature is high (for example, more than 280 ℃), the heat tracing source of the jacket sampling pipe 3 is firstly closed to control the valve and the corresponding heat tracing return valve. If the TRSA0118 temperature is still high, the tracing heat source supply control valve and corresponding tracing return valve further closing the jacketed gate valve 1. When the TRSA0118 is too high (for example, more than 310 ℃), all the heat tracing control valves XZV 01-XZV 08 need to be closed in time, a DCS system alarm is given, and the gate valves are closed through manual processing.
2. Temperature monitoring and switching of heat tracing heat sources: and judging whether the heat tracing source pipeline meets the basic conditions of the heat tracing source used as the liquid level measurement system, if the TRSA0219 or the TRSA0320 is too low and does not meet the basic conditions, indicating that the heat tracing source of the comprehensive protection system is not enough to provide heat for the sampling system, giving an alarm to the DCS, and closing the gate valve 1 by manual treatment. When a combined heat supply mode is adopted and when a heat tracing heat source needs to be switched, whether the heat tracing heat source pipeline meets the basic condition of heat tracing switching or not needs to be judged, namely the temperature of TRSA0219 or TRSA0320 meets the heat tracing temperature requirement, and the heat tracing heat source can be switched through automatic control valves on the pipelines. If the condition that the heat tracing heat source of the comprehensive protection system is not enough to provide heat for the liquid level measurement sampling system is not met, giving an alarm to the DCS system, and closing the gate valve 1 through manual processing.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation processes are given, but the protection scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (6)
1. A comprehensive protection system for an automatic liquid level measuring device of an asphalt reaction kettle is disclosed, wherein the liquid level measuring device comprises a jacketed sampling pipe and a liquid level transmitter arranged on the jacketed sampling pipe, and the front end of the liquid level transmitter is also provided with a jacketed gate valve;
the comprehensive protection system is characterized by comprising a heat-conducting oil pipeline and a medium-temperature steam pipeline, wherein the two pipelines carry out heat tracing on a jacket gate valve and a jacket sampling pipe in the liquid level measuring device;
the comprehensive protection system also comprises a jacket sampling pipe temperature instrument TRSA01, a medium-temperature steam pipeline temperature instrument TRSA02 and a heat-conducting oil pipeline temperature instrument TRSA 03; a jacket sampling pipe temperature instrument TRSA01 is arranged on the jacket sampling pipe, a medium-temperature steam pipeline temperature instrument TRSA02 is arranged on a medium-temperature steam pipeline, and a heat-conducting oil pipeline temperature instrument TRSA03 is arranged on a heat-conducting oil pipeline; the automatic control valves are respectively arranged on the heat-conducting oil pipeline and the medium-temperature steam pipeline;
the temperature instrument and the automatic control valve are both connected to the DCS control system and are controlled by the DCS control system; switching a heat tracing heat source or giving an alarm by a DCS control system according to the temperature conditions of a medium-temperature steam pipeline temperature instrument TRSA02 and a heat conducting oil pipeline temperature instrument TRSA 03; automatic control valves on the heat transfer oil line and the medium temperature steam line are opened or closed according to the temperature condition of the sampling pipe temperature instrument TRSA 01.
2. The comprehensive protection system for the automatic liquid level measuring device of the asphalt reaction kettle according to claim 1, wherein the automatic control valve arranged on the heat conducting oil pipeline comprises a jacket gate valve heat conducting oil inlet automatic control valve XZV01, a jacket sampling pipe heat conducting oil inlet automatic control valve XZV03, a jacket gate valve heat conducting oil outlet automatic control valve XZV05 and a jacket sampling pipe heat conducting oil outlet automatic control valve XZV 07.
3. The comprehensive protection system for the automatic liquid level measuring device of the asphalt reaction kettle according to claim 1, wherein the automatic control valves arranged on the medium temperature steam pipeline comprise a jacket gate valve medium temperature steam inlet automatic control valve XZV02, a jacket sampling pipe medium temperature steam inlet automatic control valve XZV04, a jacket gate valve medium temperature steam outlet automatic control valve XZV06 and a jacket sampling pipe medium temperature steam outlet automatic control valve XZV 08.
4. The comprehensive protection system for the automatic liquid level measuring device of the asphalt reaction kettle according to claim 1, wherein a jacket gate valve heat-conducting oil inlet manual control valve HV01 and a jacket sampling pipe heat-conducting oil inlet manual control valve HV03 are further arranged on the heat-conducting oil pipeline for manually adjusting the inlet and outlet flow of the heat-conducting oil pipeline.
5. The comprehensive protection system for the automatic liquid level measuring device of the asphalt reaction kettle according to claim 1, characterized in that a jacket gate valve medium temperature steam inlet manual control valve HV02 and a jacket sampling pipe medium temperature steam inlet manual control valve HV04 are further arranged on the medium temperature steam pipeline for manually adjusting the inlet and outlet flow of the medium temperature steam pipeline.
6. The integrated protection system for an automatic liquid level measuring device of an asphalt reaction kettle according to claim 1, further comprising a heat sink disposed between the jacketed gate valve and the liquid level transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022649366.5U CN213956912U (en) | 2020-11-16 | 2020-11-16 | Comprehensive protection system for automatic liquid level measuring device of asphalt reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022649366.5U CN213956912U (en) | 2020-11-16 | 2020-11-16 | Comprehensive protection system for automatic liquid level measuring device of asphalt reaction kettle |
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| Publication Number | Publication Date |
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| CN213956912U true CN213956912U (en) | 2021-08-13 |
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| CN202022649366.5U Active CN213956912U (en) | 2020-11-16 | 2020-11-16 | Comprehensive protection system for automatic liquid level measuring device of asphalt reaction kettle |
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| CN (1) | CN213956912U (en) |
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