CN210005936U - instrument heat preservation cabinet temperature control system based on DCS control system - Google Patents
instrument heat preservation cabinet temperature control system based on DCS control system Download PDFInfo
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- CN210005936U CN210005936U CN201921240104.4U CN201921240104U CN210005936U CN 210005936 U CN210005936 U CN 210005936U CN 201921240104 U CN201921240104 U CN 201921240104U CN 210005936 U CN210005936 U CN 210005936U
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- 238000004321 preservation Methods 0.000 title claims abstract description 37
- 238000009413 insulation Methods 0.000 claims description 25
- 238000012544 monitoring process Methods 0.000 abstract description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model discloses a instrument heat preservation cabinet temperature control system based on DCS control system, including DCS rack, binding post and accuse temperature subunit, accuse temperature subunit includes temperature sensor, temperature controller and the electric tracing area of installing in instrument heat preservation cabinet, temperature sensor and temperature controller all are connected to the input in the DCS rack through binding post, and electric tracing area connects temperature controller the utility model discloses a temperature of each instrument pipe in each instrument heat preservation cabinet of scene that DCS control system gathered in real time, humidity in the cabinet, open signal, each temperature controller state etc. data and real-time recording realize the state display, function such as curve display, transfinite warning and historical record, have improved the operation safety monitoring level of instrument heat preservation cabinet and each instrument of scene, the temperature in the automatic adjustment instrument heat preservation cabinet that can be timely, effectively avoid the trip accident.
Description
Technical Field
The utility model belongs to the technical field of power plant's instrument heat preservation cabinet temperature control, especially, relate to instrument heat preservation cabinet temperature control system based on DCS control system.
Background
The pressure transmitter, differential pressure transmitter, pressure switch that the room was arranged among the thermal power plant, differential pressure switch will arrange in instrument heat preservation cabinet, and when autumn and winter weather was cold, the instrument tube to each instrument will carry out the electric tracing. The existing technology is that each instrument tube in the heat preservation cabinet is provided with a temperature sensor, a temperature controller is arranged in the cabinet and is provided with a heat tracing cable, the heat tracing cable is laid on the instrument tube of each instrument, when the temperature of the instrument tube reaches the lower limit of the set value of the temperature controller, the electric heat tracing is started, when the temperature reaches the upper limit of the set value of the temperature controller, the electric heat tracing is disconnected, and the circulation is repeated, so that the temperature of the instrument tube is ensured to be within the set range. The defect of the prior art is that when the temperature controller fails, an instrument tube arranged in the cabinet easily loses heat tracing or the heat tracing is excessive to cause the medium in an instrument pressure taking tube to be frozen or vaporized, and at the moment, if an on-duty control worker cannot find and handle the temperature control device in time, a measuring point display fault is easily caused, so that a major auxiliary machine or main machine trip accident is caused.
Disclosure of Invention
An object of the utility model is to provide instrument heat preservation cabinet temperature control system based on DCS control system to solve the problem among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
instrument heat preservation cabinet temperature control systems based on DCS control system, including DCS cabinet, wiring terminal and temperature control subunit;
the temperature control subunit comprises an th temperature sensor, a temperature controller and an electric tracing band which are arranged in the instrument heat-preservation cabinet;
the th temperature sensor and the temperature controller are connected to the input end in the DCS cabinet through the th wiring terminal, and the electric tracing band is connected with the temperature controller.
, the alarm system comprises a local cabinet with an alarm digital display meter and a second temperature sensor connected to the local cabinet with the alarm digital display meter through a second connecting terminal.
, further include the DCS display device, the DCS display device is connected to the output of DCS rack, and the DCS display device can show the instrument heat preservation cabinet state.
, it also comprises a humidity sensor, which is connected to both the connection terminal and the second connection terminal.
And , determining the number of the temperature control subunits according to the instrument tubes in the instrument heat preservation cabinet.
, it also includes a switch detector connected to the terminal, and a switch detector for detecting whether the meter holding cabinet is closed.
And , the DCS cabinet can be connected with the temperature control subunits in the instrument heat preservation cabinets through a wiring terminal.
, fixing the temperature sensor on an instrument tube in the instrument heat preservation cabinet, connecting the temperature sensor wire of the temperature sensor with the DCS cabinet through a connecting terminal, and installing the instrument tube on the local instrument through a joint.
, the th temperature sensor is selected from a three-wire PT100 platinum thermistor, a two-wire PT100 platinum thermistor or a temperature sensor.
, the off sensor is a travel switch or a proximity switch.
The utility model has the advantages as follows:
1. the utility model discloses a DCS control system real-time collection's temperature of each instrument pipe in the on-the-spot each instrument heat preservation cabinet, data such as humidity in the cabinet, opening signal, each temperature controller state and real-time recording realize functions such as state display, curve display, transfinite warning and historical record, improved the operation safety monitoring level of instrument heat preservation cabinet and on-the-spot each instrument;
2. the utility model discloses the temperature in the instrument heat preservation cabinet can be timely automatically adjusted to instrument heat preservation cabinet temperature control system based on DCS control system, effectively avoids the tripping operation accident;
3. the utility model discloses a set up alarm system in the instrument heat preservation cabinet, when the temperature in the instrument heat preservation cabinet is less than or is higher than the setting value, can in time send alarm information and inform the treatment personnel.
Drawings
The accompanying drawings, which form a part of the specification , are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention properly, in which:
FIG. 1 is a schematic view of the structure of the temperature control system of the instrument thermal insulation cabinet based on the DCS control system;
FIG. 2 is a schematic view of the installation of temperature measuring points of the temperature control system of the instrument thermal insulation cabinet based on the DCS control system;
FIG. 3 is a schematic view of the connection between the temperature control system of the instrument thermal insulation cabinet based on the DCS control system and a plurality of thermal insulation cabinets;
101DCS display device, 102 local cabinet with alarm digital display meter, 103DCS cabinet, 104 th connecting terminal, 105, second connecting terminal, 106 th temperature sensor, 107 temperature controller, 108 electric tracing band, 115 off detector, 116 second temperature sensor, 117 humidity sensor, 201 ground meter, 202 connector, 203 th temperature sensor wiring, 204 strapping tape, 206 instrument tube, 301DCS control system, 302 th thermal insulation cabinet, 303 second thermal insulation cabinet, 304 third thermal insulation cabinet and 305 fourth thermal insulation cabinet.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary and is intended to provide a detailed description of the invention in steps, unless otherwise indicated, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the arts to which this invention belongs.
As shown in fig. 1, instrument thermal insulation cabinet temperature Control systems based on a DCS Control System (Distributed Control System) include a DCS cabinet 103, a connection terminal 104 and a temperature Control subunit;
the temperature control subunit comprises an th temperature sensor 106, a temperature controller 107 and an electric tracing band 108 which are arranged in the instrument heat-preservation cabinet;
the th temperature sensor 106 and the temperature controller 107 are both connected to an input in the DCS cabinet 103 through the th connection terminal 104, and the electric trace band 108 is connected to the temperature controller 107.
, the alarm system comprises a local cabinet digital alarm indicator 102 and a second temperature sensor 116 connected to the local cabinet digital alarm indicator 102 through a second connection terminal 105.
, the intelligent control system further comprises a DCS display device 101, the output end of the DCS cabinet 103 is connected with the DCS display device 101, and the DCS display device 101 can display the state of the instrument heat preservation cabinet.
, a humidity sensor 117 is further included, and the humidity sensor 117 is connected to both the connection terminal 104 and the second connection terminal 105.
And , determining the number of the temperature control subunits according to the instrument tubes in the instrument heat preservation cabinet.
, it further includes a switch detector 115 connected to the terminal 104, and a switch detector 115 for detecting whether the meter cabinet is closed.
, the DCS cabinet 103 can be connected to the temperature control subunits in the plurality of instrument thermal cabinets through the connection terminal 104.
, the th temperature sensor 106 is fixed on the instrument tube 206 in the instrument thermal container, the th temperature sensor wire 203 of the th temperature sensor 106 is connected with the DCS cabinet 103 through the th wire connecting terminal 104, and the instrument tube 206 is installed on the local instrument 201 through the connector 202.
, the th temperature sensor 106 is a three-wire PT100 PT thermistor, a two-wire PT100 PT thermistor, or a temperature transmitter.
, the off sensor 115 is a travel switch or a proximity switch.
The instrument heat preservation cabinet temperature control system based on the DCS control system comprises a DCS display device 101, a local cabinet with an alarm digital display meter 102, a DCS cabinet 103, an wiring terminal 104, a second wiring terminal 105, a temperature sensor 106, a temperature controller 107, an electric tracing band 108, a switch detector 115, a second temperature sensor 116 and a humidity sensor 117.
The specific implementation mode is that all components are installed in a field instrument heat preservation cabinet, a second temperature sensor 116 and a humidity sensor 117 are connected to a local cabinet alarm digital display meter 102 through a second connecting terminal 105, when the temperature and the humidity are detected to exceed the limit, the cabinet alarm digital display meter 105 gives out an audible and visual alarm to prompt inspection personnel, a th temperature sensor 106 and a switch th detector 115 are installed in the field instrument heat preservation cabinet, the humidity sensor 117 is connected to an input end in the DCS cabinet 103 through a connecting terminal 104, detected data are displayed on a DCS display device 101 after data processing of the DCS controller, the DCS system realizes the functions of displaying the states of real-time humidity, various temperatures, a temperature controller and a switch detector, exceeding the limit alarm, historical data recording, historical data query, curve display and the like, an electric tracing band 108 is connected with the temperature controller 107, when the temperature of a th temperature sensor 106 is detected to be lower than the operating temperature set by the DCS system, the temperature controller 107 sends an instruction to control the temperature controller 107 to supply power to the electric tracing band 108 to heat automatically, and when the temperature reaches the limit, and the temperature controller 107 stops the automatic remote heat circulation control.
The DCS display device displays contents including but not limited to humidity of every thermal insulation cabinets, or more of each temperature, 0 states and or more of each heating state, when a certain instrument thermal insulation cabinet is opened on site, a cabinet detector sends a signal, a corresponding thermal insulation cabinet opening is displayed on the DCS, when the instrument thermal insulation cabinet is closed, the signal of the cabinet detector disappears, and a corresponding thermal insulation cabinet closing is displayed on the DCS, when a certain circuit of electric tracing band of a certain thermal insulation cabinet starts to heat, the heating state of the corresponding temperature controller of the corresponding thermal insulation cabinet is displayed on the DCS as heating, when the heating of the temperature controller stops, the corresponding heating state of the corresponding thermal insulation cabinet is displayed on the DCS as stopping, and the real-time recording of the operation states of the cabinet and the electric tracing of each instrument thermal insulation cabinet is realized.
As shown in FIG. 2, the temperature station is comprised of an on-site meter 201, a connector 202, th temperature sensor wiring 203, strapping tape 204, th temperature sensor 106, and a meter tube 206.
In the specific embodiment, an instrument tube 206 is mounted on a local instrument 201 through a connector 202, an th temperature sensor 106 is tightly attached to the instrument tube 206 through a strapping tape 204, and a th temperature sensor wire 203 is connected to a th wire connecting terminal 104 corresponding to the DCS cabinet 103 of fig. 1 through a connecting wire.
As shown in fig. 3, the DCS control system 301 may be a single monitoring screen or may be generated after being added to a certain project screen, and the th thermal insulation cabinet 302, the second thermal insulation cabinet 303, the third thermal insulation cabinet 304, the fourth thermal insulation cabinet 305 and the DCS control system 301 communicate with each other and are controlled by instructions of the DCS control system 301, and the same instrument thermal insulation cabinets may be added on site according to actual situations.
According to the embodiment of the present invention, the th temperature sensor 106 of the cabinet is a three-wire PT100 platinum thermistor or a two-wire PT100 platinum thermistor or a temperature transmitter.
According to the embodiment of the present invention, the electric temperature controller 107 is a relay contact switch or other means to control the on/off of the electric tracing power.
According to an embodiment of the present invention, the off sensor 115 may be a travel switch or a proximity switch.
According to the embodiment of the present invention, each th temperature sensor 106 is bundled with the corresponding instrument tube 206 and used with the corresponding temperature controller 107.
According to the utility model discloses an embodiment, every instrument heat preservation cabinet can install sets temperature sensor 106 and temperature controller 107 according to on-the-spot actual need, also can install several sets of temperature sensor 106 and temperature controller 107.
The embodiment of the utility model provides an instrument heat preservation cabinet temperature control system based on DCS system can replace current instrument heat preservation cabinet, implements effectual supervision and control to the companion's of on-the-spot instrument heat preservation cabinet heat state, and the instrument heat preservation cabinet is on the spot just takes warning digital display table 102 can in time show temperature and humidity in the cabinet, also can in time send the audible-visual annunciation suggestion when the data is more limited. The intelligent level of instrument heat tracing control is greatly improved, and the safe and stable operation capability of a generator set system is also improved.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (10)
1, instrument heat preservation cabinet temperature control system based on DCS control system, characterized by comprising a DCS cabinet, a wiring terminal and a temperature control subunit;
the temperature control subunit comprises an th temperature sensor, a temperature controller and an electric tracing band which are arranged in the instrument heat-preservation cabinet;
the th temperature sensor and the temperature controller are connected to the input end in the DCS cabinet through the th wiring terminal, and the electric tracing band is connected with the temperature controller.
2. The DCS control system based instrument thermal cabinet temperature control system of claim 1, further comprising an alarm system, the alarm system comprising: the local cabinet is provided with an alarm digital display meter and is connected to a second temperature sensor on the local cabinet through a second connecting terminal.
3. The DCS control system based instrument thermal insulation cabinet temperature control system of claim 1, further comprising a DCS display device, wherein the output end of the DCS cabinet is connected with the DCS display device, and the DCS display device can display the status of the instrument thermal insulation cabinet.
4. The DCS control system based instrument thermal cabinet temperature control system of claim 1, further comprising a humidity sensor, wherein the humidity sensor is connected with the connection terminal and the second connection terminal simultaneously.
5. The DCS control system based instrument thermal cabinet temperature control system of claim 1, wherein the number of the temperature control subunits is plural, and the number of the temperature control subunits is determined according to instrument tubes in the instrument thermal cabinet.
6. The DCS control system based instrument thermal cabinet temperature control system of claim 1, further comprising a switch detector connected to the terminal, wherein the switch detector is used for detecting whether the instrument thermal cabinet is closed.
7. The DCS control system based instrument thermal cabinet temperature control system of claim 1, wherein the DCS cabinet can be connected with the temperature control subunits in the plurality of instrument thermal cabinets through an connection terminal.
8. The DCS-control-system-based instrument cluster incubator temperature control system of claim 1, wherein the th temperature sensor is fixed to an instrument tube inside the instrument cluster incubator, the th temperature sensor th temperature sensor wire is connected to the DCS cabinet through the th wire connection terminal, and the instrument tube is mounted to a local instrument through a connector.
9. The DCS control system based instrument thermal cabinet temperature control system of claim 1, wherein the th temperature sensor is selected from three-wire PT100 Pt thermistor, two-wire PT100 Pt thermistor or temperature transmitter.
10. The DCS control system based instrument thermal cabinet temperature control system of claim 6, wherein the off detector is a travel switch or a proximity switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921240104.4U CN210005936U (en) | 2019-08-01 | 2019-08-01 | instrument heat preservation cabinet temperature control system based on DCS control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921240104.4U CN210005936U (en) | 2019-08-01 | 2019-08-01 | instrument heat preservation cabinet temperature control system based on DCS control system |
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| Publication Number | Publication Date |
|---|---|
| CN210005936U true CN210005936U (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921240104.4U Expired - Fee Related CN210005936U (en) | 2019-08-01 | 2019-08-01 | instrument heat preservation cabinet temperature control system based on DCS control system |
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| CN (1) | CN210005936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118012161A (en) * | 2024-01-03 | 2024-05-10 | 湖北能源集团鄂州发电有限公司 | An industrial cabinet type heat tracing control system |
-
2019
- 2019-08-01 CN CN201921240104.4U patent/CN210005936U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118012161A (en) * | 2024-01-03 | 2024-05-10 | 湖北能源集团鄂州发电有限公司 | An industrial cabinet type heat tracing control system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200131 Termination date: 20200801 |