CN211504439U - Temperature monitoring and early warning system applied to surface of dehydrogenation reactor - Google Patents
Temperature monitoring and early warning system applied to surface of dehydrogenation reactor Download PDFInfo
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- CN211504439U CN211504439U CN202020566625.5U CN202020566625U CN211504439U CN 211504439 U CN211504439 U CN 211504439U CN 202020566625 U CN202020566625 U CN 202020566625U CN 211504439 U CN211504439 U CN 211504439U
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- dehydrogenation reactor
- early warning
- warning system
- temperature monitoring
- thermocouples
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Abstract
The utility model provides a be applied to temperature monitoring early warning system on dehydrogenation reactor surface, gather the subsystem: the system is used for carrying out data communication between the surface thermocouple and the central control equipment; at least one surface thermocouple: laying on the outer surface of the dehydrogenation reactor; the output ends of all the surface thermocouples are electrically connected with the acquisition subsystem; a central control device; the central control equipment is provided with a communication module, the communication module is used for receiving data, monitoring and providing alarm, and the central control equipment is electrically connected with the acquisition subsystem. The system realizes the monitoring of the temperature of the surface of the dehydrogenation reactor.
Description
Technical Field
The utility model relates to an electronic circuit technical field, concretely relates to be applied to the temperature monitoring early warning system on dehydrogenation reactor surface.
Background
The existing temperature monitoring system for the dehydrogenation reactor mainly adopts a point-type temperature measurement method, namely, the temperature monitoring is realized by measuring the internal temperature of the dehydrogenation reactor in a point-type manner. However, in the use process of the dehydrogenation reactor, if the surface of the dehydrogenation reactor is overheated, the surface of the dehydrogenation reactor is bulged, and the leakage or omission of substances inside the dehydrogenation reactor and even explosion can be caused. However, the temperature monitoring system in the prior art cannot realize the function of monitoring the temperature of the surface of the dehydrogenation reactor.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims at providing a be applied to the temperature monitoring early warning system on dehydrogenation reactor surface realizes monitoring the temperature on dehydrogenation reactor surface.
A temperature monitoring and early warning system applied to the surface of a dehydrogenation reactor comprises:
an acquisition subsystem: the system is used for carrying out data communication between the surface thermocouple and the central control equipment;
at least one surface thermocouple: laying on the outer surface of the dehydrogenation reactor; the output ends of all the surface thermocouples are electrically connected with the acquisition subsystem;
a central control device; the central control equipment is provided with a communication module and is electrically connected with the acquisition subsystem.
Preferably, the acquisition subsystem comprises a remote I/O module or a temperature transmitter.
Preferably, the acquisition subsystem further comprises a data conversion module, and the data conversion module is used for converting the signal output by the surface thermocouple into a signal identified by the central control device.
Preferably, the data conversion module and the central control equipment are communicated in an RS485 mode or a 4-20 mA mode.
Preferably, the dehydrogenation reactor comprises a body and a connecting pipe part arranged on the body; the surface thermocouples are wound equidistantly on the outer surface of the adapter part of the dehydrogenation reactor.
Preferably, the interval between adjacent surface thermocouples on the connecting pipe part of the dehydrogenation reactor ranges from 150mm to 500 mm.
Preferably, the body comprises a cylinder, a left end face and a right end face; the surface thermocouples are distributed on the outer surface of the upper half part of the cylinder in the body at equal intervals.
Preferably, the interval between adjacent surface thermocouples on the cylinder is in the range of 150 mm-1500 mm.
Preferably, the surface thermocouples are equally distributed along the circumferential direction of the upper half portions of the left and right end faces in the body.
The utility model provides a be applied to temperature monitoring early warning system on dehydrogenation reactor surface is through laying the surface thermocouple on the dehydrogenation reactor surface to the realization carries out the function monitored to the temperature on dehydrogenation reactor surface.
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 embodiments or the technical solutions in the prior art will be briefly described below. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a block diagram of a temperature monitoring and early warning system according to an embodiment.
FIG. 2 is a schematic diagram of the structure of a dehydrogenation reactor provided by an embodiment.
FIG. 3 is a block diagram of a temperature monitoring and early warning system of an acquisition subsystem including a remote I/O module applied to a piping section of a dehydrogenation reactor.
FIG. 4 is a plan view of surface thermocouples laid on the piping portion of the dehydrogenation reactor, wherein (a), (B), (C), (d), (E) and (F) in FIG. 4 are respectively plan views of surface thermocouples at a joint C, a joint A, a joint B, a joint F, a joint E and a joint H.
Fig. 5 is a block diagram of a temperature monitoring and early warning system of an acquisition subsystem comprising a remote I/O module, which is applied to the body of a dehydrogenation reactor.
Fig. 6 is a plan view of surface thermocouples laid on the body of the dehydrogenation reactor, wherein (a), (b) and (c) in fig. 6 are respectively plan views of surface thermocouples on the cylinder body, the left end face and the right end face of the body of the dehydrogenation reactor.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Example (b):
a temperature monitoring and early warning system applied to the surface of a dehydrogenation reactor, see fig. 1, comprising:
an acquisition subsystem: the system is used for carrying out data communication between the surface thermocouple and the central control equipment;
in particular, the acquisition subsystem may be implemented using a remote I/O module or a temperature transmitter. This embodiment enumerates a hardware structure of an acquisition subsystem implemented by a remote I/O module: the acquisition subsystem comprises a motherboard, and a power module, a gateway module and an I/O module which are plugged on the motherboard; wherein the gateway module is electrically connected with the I/O module; the power supply module is used for supplying power to the temperature monitoring and early warning system;
the motherboard is used for distributing power, transmitting data, and connecting external devices. The power supply module provides sufficient power supply for normal work of the temperature monitoring and early warning system. The redundant configuration of the power supply module ensures the reliability of power supply of the whole temperature monitoring and early warning system. The gateway module controls communication between the I/O module and external devices. The redundancy configuration of the gateway module ensures the reliability of data communication of the whole temperature monitoring and early warning system.
Preferably, the acquisition subsystem further comprises a data conversion module, and the data conversion module is used for converting the signal output by the surface thermocouple into a signal identified by the central control device. And the data conversion module and the central control equipment are communicated in an RS485 mode or a 4-20 mA mode.
Specifically, the acquisition subsystem comprises at least one section coupler and at least one data conversion module; aiming at the acquisition subsystem adopting the remote I/O module, the communication end of the remote I/O module is sequentially connected with a section of coupler and a data conversion module in series. The section coupler and the conversion card are communicated by adopting a PROFIBUS-DP protocol. The section coupler is used for isolating the acquisition subsystem from the central control equipment. All modules in the acquisition subsystem support online plugging.
At least one surface thermocouple: laying on the outer surface of the dehydrogenation reactor; the output ends of all the surface thermocouples are electrically connected with the acquisition subsystem;
specifically, in this embodiment, the mounting structure of the surface thermocouple is not limited, and as long as the mounting structure is configured such that the surface thermocouple is as close as possible to the outer surface of the dehydrogenation reactor, the surface thermocouple may be laid on the outer surface of the dehydrogenation reactor by using a platen in the publication No. CN207459595U, for example, so as to ensure that the temperature of the outer surface of the dehydrogenation reactor can be accurately measured.
The surface thermocouple may be a linear thermocouple and may be made of an NTC material. The system achieves the effect of monitoring the temperature of the outer surface of the dehydrogenation reactor by arranging the linear thermocouple on the outer surface of the dehydrogenation reactor. The NTC material has the characteristics of high thermal sensitivity, large resistance change rate and the like, ensures that the NTC material still has the optimal insulation resistance and resistance change rate under different working temperature sections, and is particularly suitable for temperature detection of connection pipe parts with different temperatures of a dehydrogenation reactor. Therefore, under the condition that the dehydrogenation reactor normally operates and the surface temperature is high, local abnormal high-temperature small hot spots can still be effectively detected, namely the capacity of searching heat in heat is realized. The surface thermocouple may employ an HSD-T-CTTC hot spot detector. The signal output by the surface thermocouple output end is a direct-current millivolt signal corresponding to the highest temperature of the cable.
A central control device; the central control equipment is provided with a communication module and is electrically connected with the acquisition subsystem. The communication module is used for alarming when the temperature of the surface of the dehydrogenation reactor is overhigh.
The system realizes the function of monitoring the surface temperature of the dehydrogenation reactor by paving the surface thermocouple on the surface of the dehydrogenation reactor.
Referring to fig. 2, the dehydrogenation reactor comprises a body and a nozzle part arranged on the body; the dehydrogenation reactor in FIG. 2 is a 7.9m reactor. The piping section of the dehydrogenation reactor in figure 2 comprises piping a, piping B, piping C, piping E, piping F, and piping H. Connecting pipe C is used as 11, connecting pipe A is used as 12, connecting pipe B is used as 13, connecting pipe F is used as 14, connecting pipe E is used as 15, and connecting pipe H is used as 16. The dehydrogenation reactor body comprises a cylinder body 21, a left end surface 23 and a right end surface 22.
The surface thermocouples are wound equidistantly on the outer surface of the adapter part of the dehydrogenation reactor. The interval range of the thermocouples on the adjacent surfaces of the connecting pipe part of the dehydrogenation reactor is 150-500 mm.
Referring to fig. 3, the connection pipe portion of each dehydrogenation reactor can be divided into 16 temperature zones, i.e. 16 surface thermocouples are arranged. For an acquisition subsystem employing a remote I/O module design, 16 surface thermocouples were connected to the 16 inputs of the I/O module. Each I/O module may reserve 2 lanes of communication ports.
Referring to fig. 4, the distance between the adjacent surface thermocouples in the connection pipe a, the connection pipe B, and the connection pipe C was 300 mm. In the connecting pipe E, the connecting pipe F and the connecting pipe H, the distance range of the adjacent surface thermocouples is 500 mm. The system can set the spacing between adjacent surface thermocouples according to the temperature requirements of the outer surface of each nozzle portion. If the pipe connection part requires more temperature points to be detected, the distance between the adjacent surface thermocouples can be set smaller. Otherwise, it is set larger.
The surface thermocouples are distributed on the outer surface of the upper half part of the cylinder in the body at equal intervals. The interval range of the thermocouples on the adjacent surfaces of the cylinder body of the dehydrogenation reactor is 150-1500 mm. The surface thermocouples are distributed at equal intervals along the circumferential direction of the upper half parts of the left end surface and the right end surface in the body.
Referring to fig. 5, the body of each dehydrogenation reactor can be divided into 12 temperature zones, i.e. 12 surface thermocouples are arranged. For an acquisition subsystem designed with a remote I/O module, 12 surface thermocouples were connected to the 12 inputs of the I/O module. Each I/O module may reserve 2 lanes of communication ports. In FIG. 6, the body of the dehydrogenation reactor is cylindrical as a whole, and the end surface of the body of the dehydrogenation reactor is only provided with surface thermocouples on the upper half part.
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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (9)
1. The utility model provides a be applied to temperature monitoring early warning system on dehydrogenation reactor surface which characterized in that includes:
an acquisition subsystem: the system is used for carrying out data communication between the surface thermocouple and the central control equipment;
at least one surface thermocouple: laying on the outer surface of the dehydrogenation reactor; the output ends of all the surface thermocouples are electrically connected with the acquisition subsystem;
a central control device; the central control equipment is provided with a communication module and is electrically connected with the acquisition subsystem.
2. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to claim 1,
the acquisition subsystem comprises a remote I/O module or a temperature transmitter.
3. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to claim 1,
the acquisition subsystem further comprises a data conversion module, and the data conversion module is used for converting the signals output by the surface thermocouples into signals identified by the central control equipment.
4. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to claim 3,
and the data conversion module and the central control equipment are communicated in an RS485 mode or a 4-20 mA mode.
5. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to any one of claims 1 to 4, characterized in that,
the dehydrogenation reactor comprises a body and a connecting pipe part arranged on the body; the surface thermocouples are wound equidistantly on the outer surface of the adapter part of the dehydrogenation reactor.
6. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to claim 5,
the interval range of the thermocouples on the adjacent surfaces of the connecting pipe part of the dehydrogenation reactor is 150-500 mm.
7. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to claim 5,
the body comprises a cylinder body, a left end surface and a right end surface; the surface thermocouples are distributed on the outer surface of the upper half part of the cylinder in the body at equal intervals.
8. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to claim 7,
the interval range of the thermocouples on the adjacent surfaces of the cylinder body of the dehydrogenation reactor is 150-1500 mm.
9. The temperature monitoring and early warning system applied to the surface of the dehydrogenation reactor according to claim 7,
the surface thermocouples are distributed at equal intervals along the circumferential direction of the upper half parts of the left end surface and the right end surface in the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566625.5U CN211504439U (en) | 2020-04-16 | 2020-04-16 | Temperature monitoring and early warning system applied to surface of dehydrogenation reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566625.5U CN211504439U (en) | 2020-04-16 | 2020-04-16 | Temperature monitoring and early warning system applied to surface of dehydrogenation reactor |
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| CN211504439U true CN211504439U (en) | 2020-09-15 |
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| CN202020566625.5U Active CN211504439U (en) | 2020-04-16 | 2020-04-16 | Temperature monitoring and early warning system applied to surface of dehydrogenation reactor |
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