CN201837478U - Explosion proof type multi-point temperature measurement system - Google Patents
Explosion proof type multi-point temperature measurement system Download PDFInfo
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- CN201837478U CN201837478U CN2010205764517U CN201020576451U CN201837478U CN 201837478 U CN201837478 U CN 201837478U CN 2010205764517 U CN2010205764517 U CN 2010205764517U CN 201020576451 U CN201020576451 U CN 201020576451U CN 201837478 U CN201837478 U CN 201837478U
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Abstract
The utility model discloses an explosion proof type multi-point temperature measurement system, which comprises a temperature inductor, a transmitter and a control system. The temperature measurement system is characterized in that the temperature inductor is provided with N thermocouples of different lengths, wherein the thermocouples are used for measuring the temperature of N different points; the transmitter is provided with P analog input interfaces and a digital output interface; the analog input interfaces are electrically connected with one thermocouple of the temperature inductor; and the digital output interface is also connected with a signal terminal and a signal adaptor. The temperature measurement system has the obvious effects that one temperature inductor can measure a plurality of temperature points of different depths at one time; one transmitter can process the data of a plurality of temperature detecting points at one time; the transmitter has the analog-to-digital conversion function; a plurality of data signal lines of the transmitter are merged to a bus, and the data signals are uploaded into the signal adaptor by the RS 485 communication protocol and then are accessed into the control system by the signal adaptor; the temperature measurement system adopts the tree distribution and has simple structure and strong practicability; the operation and maintenance are convenient; and the cost is also lower.
Description
Technical field
The utility model relates to the temperature Detection Techniques, specifically, is a kind of explosion-proof type multi-point temperature measurement system that utilizes armouring multiple spot thermopair, multichannel temperature transmitter and explosion-proof tank to constitute.
Background technology
The systematic comparison complexity that thermopair commonly used of industry at present and transmitter are formed; generally by the corresponding transmitter of a thermopair; on-the-spot formation element is varied; many transmitters all need to add protective disc and guard box is protected; occupation space and position are all big, need a large amount of cables and compensating wire.A lot of independent boiler synthetic tower devices need link to each other with control system, and because cause many difficulties apart from factors such as too far away or field condition do not allow.
The shortcoming of prior art is: measuring synthetic tower; retort; during temperature in the media such as desulfurization link and pipeline; adopt traditional temperature to become the thermocouple signal that module can only receive a point; but in actual conditions; need measure different depth simultaneously; the temperature of diverse location is also carried out PLC (Programmable logic Controller; programmable logic controller (PLC)) or DCS(Distributed Control System; dcs) control; if adopt traditional hot galvanic couple and traditional transmitter; then need many thermopairs and many transmitters could realize above function; thereby need a large amount of stube cable and compensating wire; and each transmitter adds a guard box; increased installation cost; simultaneously, traditional transmitter also needs and the analog-digital commutator logotype, uses very inconvenient.
Summary of the invention
At the deficiencies in the prior art, the purpose of this utility model provides a kind of explosion-proof type multi-point temperature measurement system, during temperature in measuring media such as synthetic tower, retort and pipeline, a temperature inductor can be measured the different depth temperature simultaneously, a transmitter can be handled the data of a plurality of temperature sensing points, and system architecture is simple, and is practical, user-friendly and safeguard that system cost is also cheaper.
To achieve these goals, the utility model provides a kind of explosion-proof type multi-point temperature measurement system, comprise temperature inductor, transmitter and control system, its key is: described temperature inductor is provided with the thermopair that N root length differs, be used to test the temperature of N diverse location point, described transmitter is provided with P analog input interface, a digital output interface, a thermopair in described analog input interface and the described temperature inductor electrically connects, the simulation galvanic couple signal that described transmitter is received P analog input interface is converted into digital signal and exports from digital output interface with the RS485 form, the output terminal of described transmitter also is connected with signal terminal, described signal terminal is uploaded to signal adapter with the signal of Q transmitter input by synthetic one road signal of RS485 bus protocol, described signal adapter uploads to the signal of RS485 bus protocol in the described control system by the RS232 protocol conversion and with data converted, described N, P, Q is the integer more than or equal to 1, and P is more than or equal to N, described N, the value of P and Q is determined according to concrete application scenario.
Be provided with the thermopair that N root length differs in each temperature inductor, can measure the temperature spot of same position different depth simultaneously, be provided with P analog input interface in the transmitter, can handle the simulation galvanic couple signal that P thermopair uploaded simultaneously, usually in the application scenario, P is made as the multiple of N, make that a transmitter and a plurality of temperature inductor are supporting, if the location point of measuring is too much, the output signal interface of a plurality of transmitters can be connected on the same signal terminal, the transmitter just simulation galvanic couple signal that received of P analog input interface is converted into digital signal and exports from digital output interface with the RS485 form, signal terminal then is uploaded to signal adapter with the signal of Q transmitter input by synthetic one road signal of RS485 bus protocol, finally upload in the control system according to the RS232 agreement by signal adapter, whole process has realized the digital signal transmission, reduced the decay of signal in transmittance process, control system is determined the address of each analog channel in each transmitter to read the data of each each address of module and obtain on-the-spot True Data in real time by software by addressing of address.
Application for various dangerous situations; described temperature inductor is an explosion-proof type armouring multiple spot thermopair; comprise anti-explosion terminal box, protection metal pipe and armoured thermocouple; offer two electric interfaces on the sidewall of described anti-explosion terminal box; the upper end of described protection metal pipe is stretched in the anti-explosion terminal box and with described anti-explosion terminal box and is fixed together; in protection metal pipe, be equipped with the armoured thermocouple that N root length differs, N=1-4 wherein, generalized case is made as 4.Correspondingly, transmitter adopts the multichannel temperature transmitter, is provided with P analog input interface, and wherein P=8 that is to say, a transmitter can be corresponding to two temperature inductors.
The epimere of described protection metal pipe also is set with reinforcing mechanisms; this reinforcing mechanisms is made of reinforcement pipe and ring flange; the upper end of its MR medium reinforcing pipe and the welding of the outer wall of described anti-explosion terminal box are fixing; the lower end of reinforcement pipe and ring flange welding are fixing; the junction of reinforcement pipe lower end and protection metal pipe also is provided with silently; this silently is sleeved between reinforcement pipe and the ring flange, the reinforcement pipe and silently between welding fixing, silently fixing with the outer wall welding of protection metal pipe.
Described transmitter, signal terminal and signal adapter all are built in the explosion-proof tank, and the main intermittently flame proof principle of utilizing adopts the explosion-proof tank with sufficient intensity, can play a protective role in various hazardous areas, and explosive-proof grade can reach EXd II CT6.
Usually in Industry Control, control system adopts PLC control system or DCS control system.
Remarkable result of the present utility model is: a temperature inductor can be measured the temperature spot of a plurality of different depths simultaneously, a transmitter can be handled the data of a plurality of temperature sensing points, and the transmitter that adopts carries analog-digital conversion function, the data signal line of a plurality of transmitters converges into bus and uploads in the signal adapter with RS485 communication protocol, upload to control system by signal adapter at last, adopt tree-like distribution, system architecture is simple, practical, with respect to traditional thermopair and transmitter, user's operation and maintenance is convenient, and the quantity of required explosion-proof tank is less relatively, and system cost is also cheaper.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model;
Fig. 2 is the signal pin distribution plan of transmitter 2 among Fig. 1;
Fig. 3 is the structural representation of temperature inductor 1 among Fig. 1.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model and principle of work thereof are described in detail.
As shown in Figure 1, the utility model proposes a kind of explosion-proof type multi-point temperature measurement system, comprise temperature inductor 1, transmitter 2 and control system 3, described temperature inductor 1 is an explosion-proof type armouring multiple spot thermopair, its inside is provided with the thermopair that 4 length differ, can measure the temperature spot of 4 different depths simultaneously, transmitter 2 is the multichannel temperature transmitter, be provided with 8 analog input interfaces, can import 8 scene temperature points simultaneously, each transmitter 2 can connect two temperature inductors 1 like this, a plurality of transmitters 2 synthesize through signal terminal 4 with the digital signal of RS485 agreement output and upload in the signal adapter 5 with the RS485 bus, the quantity of transmitter 2 is 3 among the figure, signal adapter 5 is used to realize the conversion of RS485 and RS232 communication protocol, and the field data of obtaining the most at last uploads in the control system 3, according to different commercial Application places, control system 3 can adopt the PLC control system, also can adopt the DCS control system.
As shown in Figure 2,8 analog input interfaces of transmitter 2 be respectively V1 ±-V8 ±, RXD among the figure, TXD is the digital signal output interface, 24V+ and 0V are the transmitter power interface, control system can provide the direct supply of 24V to signal adapter 5, by signal adapter 5 is transmitter 2 and the power supply of other field apparatuss, transmitter 2 is handled the simulation galvanic couple signal that 8 road signal input ports are uploaded according to addressing mode, accuracy of measurement is ± 0.2 ℃, scan period was less than 1.5 seconds, the signal that 8 tunnel analog channels receive is finished analog to digital conversion in transmitter 2, from RXD, export by TXD digital signal output interface according to RS485 communication protocol for digital signal after the conversion.The process of data upload adopts digital data transmission, has reduced the decay of signal in transport process.
As shown in Figure 3; measure the temperature spot of a plurality of different depths simultaneously in order to realize temperature inductor 1; described temperature inductor 1 is an explosion-proof type armouring multiple spot thermopair; comprise anti-explosion terminal box 11; protection metal pipe 13 and armoured thermocouple 14; offer two electric interfaces 111 on the sidewall of described anti-explosion terminal box 11; the upper end of described protection metal pipe 13 is stretched in the anti-explosion terminal box 11 and with described anti-explosion terminal box 11 and is fixed together; in protection metal pipe 13, be equipped with the armoured thermocouple 14 that 4 length differ; can measure 1-4 temperature spot; Fig. 3 only sees 3 for partly cuing open figure.
The epimere of described protection metal pipe 13 also is set with reinforcing mechanisms 12; this reinforcing mechanisms 12 is made of reinforcement pipe 121 and ring flange 122; the outer wall welding of the upper end of its MR medium reinforcing pipe 121 and described anti-explosion terminal box 11 is fixing; the lower end of reinforcement pipe 121 and ring flange 122 welding are fixing; the junction of reinforcement pipe 121 lower ends and protection metal pipe 13 also is provided with silently 123; this silently 123 is sleeved between reinforcement pipe 121 and the ring flange 122; reinforcement pipe 121 and silently between 123 welding fixing, silently 123 is fixing with the outer wall welding of protection metal pipe 13.
In order to adapt to hazardous area with damp, described transmitter 2, signal terminal 4 and signal adapter 5 all are built in the explosion-proof tank, explosion-proof tank is provided with a plurality of electric interfaces, be used for interspersed signal connecting line and power lead, various on-site electrical equipments are installed in the explosion-proof tank, make the explosive-proof grade of total system can reach EXd II CT6, can be widely used in the temperature survey of media such as synthetic tower, retort and desulfurization environment, strengthen the security feature of system.
Principle of work of the present utility model is:
Utilize explosion-proof type armouring multiple spot thermopair as temperature inductor 1, the thermopair that has 4 length to differ in temperature inductor, can measure 4 temperature spots simultaneously, transmitter 2 adopts the hyperchannel transmitter, a transmitter can be handled the simulation galvanic couple signal that 8 temperature sensing points are uploaded simultaneously, the simulation galvanic couple signal that transmitter 2 will receive is converted into digital signal and exports from digital output interface with the RS485 form, signal terminal 4 then is uploaded to signal adapter 5 with the signal of a plurality of transmitter 2 inputs by synthetic one road signal of RS485 bus protocol, finally upload in the control system 3 according to the RS232 agreement by signal adapter 5, whole process has realized the digital signal transmission, reduced the decay of signal in transmittance process, control system is determined the address of each analog channel in each transmitter to read the data of each each address of module and obtain on-the-spot True Data in real time by software by addressing of address.
Claims (6)
1. explosion-proof type multi-point temperature measurement system, comprise temperature inductor (1), transmitter (2) and control system (3), it is characterized in that: described temperature inductor (1) is provided with the thermopair that N root length differs, be used to test the temperature of N diverse location point, described transmitter (2) is provided with P analog input interface, a digital output interface, a thermopair in described analog input interface and the described temperature inductor (1) electrically connects, the simulation galvanic couple signal that described transmitter (2) is received P analog input interface is converted into digital signal and exports from digital output interface with the RS485 form, the output terminal of described transmitter (2) also is connected with signal terminal (4), described signal terminal (4) is uploaded to signal adapter (5) with the signal of Q transmitter (2) input by synthetic one road signal of RS485 bus protocol, described signal adapter (5) uploads to the signal of RS485 bus protocol in the described control system (3) by the RS232 protocol conversion and with data converted, described N, P, Q is the integer more than or equal to 1, and P is more than or equal to N.
2. explosion-proof type multi-point temperature measurement according to claim 1 system; it is characterized in that: described temperature inductor (1) is an explosion-proof type armouring multiple spot thermopair; comprise anti-explosion terminal box (11); protection metal pipe (13) and armoured thermocouple (14); offer two electric interfaces (111) on the sidewall of described anti-explosion terminal box (11); the upper end of described protection metal pipe (13) is stretched in the anti-explosion terminal box (11) and with described anti-explosion terminal box (11) and is fixed together; in protection metal pipe (13), be equipped with the armoured thermocouple (14) that N root length differs, wherein N=1-4.
3. explosion-proof type multi-point temperature measurement according to claim 2 system; it is characterized in that: the epimere of described protection metal pipe (13) also is set with reinforcing mechanisms (12); this reinforcing mechanisms (12) is made of reinforcement pipe (121) and ring flange (122); the outer wall welding of the upper end of its MR medium reinforcing pipe (121) and described anti-explosion terminal box (11) is fixing; the lower end of reinforcement pipe (121) and ring flange (122) welding are fixing; the junction of reinforcement pipe (121) lower end and protection metal pipe (13) also is provided with silently (123); this silently (123) be sleeved between reinforcement pipe (121) and the ring flange (122); reinforcement pipe (121) and silently between (123) welding fixing, silently (123) are fixing with the outer wall welding of protection metal pipe (13).
4. explosion-proof type multi-point temperature measurement according to claim 1 system, it is characterized in that: described transmitter (2) is the multichannel temperature transmitter, is provided with P analog input interface, wherein P=8.
5. explosion-proof type multi-point temperature measurement according to claim 1 system, it is characterized in that: described transmitter (2), signal terminal (4) and signal adapter (5) all are built in the explosion-proof tank.
6. explosion-proof type multi-point temperature measurement according to claim 1 system, it is characterized in that: described control system (3) is PLC control system or DCS control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205764517U CN201837478U (en) | 2010-10-26 | 2010-10-26 | Explosion proof type multi-point temperature measurement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205764517U CN201837478U (en) | 2010-10-26 | 2010-10-26 | Explosion proof type multi-point temperature measurement system |
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| CN201837478U true CN201837478U (en) | 2011-05-18 |
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| CN2010205764517U Expired - Lifetime CN201837478U (en) | 2010-10-26 | 2010-10-26 | Explosion proof type multi-point temperature measurement system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033278A (en) * | 2012-12-26 | 2013-04-10 | 重庆川仪自动化股份有限公司 | Integrative temperature transmitter |
| CN104359580A (en) * | 2014-12-09 | 2015-02-18 | 南京化工职业技术学院 | Thermal resistance temperature itinerant detector |
| CN105241566A (en) * | 2015-11-13 | 2016-01-13 | 哈尔滨东安发动机（集团）有限公司 | High-speed temperature measurement device |
| CN107192468A (en) * | 2017-06-12 | 2017-09-22 | 中国航发哈尔滨东安发动机有限公司 | A kind of high acquisition rate temp measuring system of multichannel |
| CN109974880A (en) * | 2019-04-11 | 2019-07-05 | 重庆川仪控制系统有限公司 | A kind of multichannel thermocouple acquisition module |
| CN110057461A (en) * | 2019-04-08 | 2019-07-26 | 上海工程技术大学 | A kind of electric thermo-couple temperature collection system |
-
2010
- 2010-10-26 CN CN2010205764517U patent/CN201837478U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033278A (en) * | 2012-12-26 | 2013-04-10 | 重庆川仪自动化股份有限公司 | Integrative temperature transmitter |
| CN103033278B (en) * | 2012-12-26 | 2015-07-29 | 重庆川仪自动化股份有限公司 | Integrative temperature transmitter |
| CN104359580A (en) * | 2014-12-09 | 2015-02-18 | 南京化工职业技术学院 | Thermal resistance temperature itinerant detector |
| CN105241566A (en) * | 2015-11-13 | 2016-01-13 | 哈尔滨东安发动机（集团）有限公司 | High-speed temperature measurement device |
| CN107192468A (en) * | 2017-06-12 | 2017-09-22 | 中国航发哈尔滨东安发动机有限公司 | A kind of high acquisition rate temp measuring system of multichannel |
| CN110057461A (en) * | 2019-04-08 | 2019-07-26 | 上海工程技术大学 | A kind of electric thermo-couple temperature collection system |
| CN109974880A (en) * | 2019-04-11 | 2019-07-05 | 重庆川仪控制系统有限公司 | A kind of multichannel thermocouple acquisition module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20110518 |