CN202348354U - Intelligent thermal expansion monitoring instrument - Google Patents
Intelligent thermal expansion monitoring instrument Download PDFInfo
- Publication number
- CN202348354U CN202348354U CN2011204072284U CN201120407228U CN202348354U CN 202348354 U CN202348354 U CN 202348354U CN 2011204072284 U CN2011204072284 U CN 2011204072284U CN 201120407228 U CN201120407228 U CN 201120407228U CN 202348354 U CN202348354 U CN 202348354U
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- signal
- unit
- thermal expansion
- intelligent thermal
- processing unit
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Abstract
The utility model discloses an intelligent thermal expansion monitoring instrument, which comprises a signal detecting unit connected with a signal processing unit, a signal displaying unit, an output unit and an alarm unit. The intelligent thermal expansion monitoring instrument adopts the structure, adopts a linear differential transformer of the reliable signal detecting unit and fully utilizes the strong operation and processing capability of a single chip microcomputer of the signal processing unit to improve the thermal expansion monitoring and protecting performance of a steam turbine.
Description
Technical field
The utility model belongs to the technology of instrument and meter field, relates to a kind of monitor, particularly relates to a kind of steam turbine intelligence thermal expansion monitor.
Background technique
Steam turbine is when starting and shut down; Perhaps when the variation of a certain particular procedure; The housing of most of machine all exists the process of thermal expansion, if the non-homogeneous expansion of casing both sides is even, casing is become tiltedly or perk; Such distortion can make the huge stress of generation between casing and the basis, and that brings thus misaligns phenomenon and can cause serious consequence; So need monitor and protect to the thermal expansion of machine case; Yet existing monitoring instrument can not well play monitoring and protective action to steam turbine.
The model utility content
The purpose of the utility model is to overcome the defective that exists in the existing technology, and a kind of thermal expansion monitoring and good intelligent thermal expansion monitor of protective value to steam turbine is provided.
For achieving the above object, the technological scheme of the utility model provides a kind of intelligent thermal expansion monitor, comprising:
Detecting signal unit comprises near the sensor that is arranged on the tested swelling part, is used to gather the expansion signal, and is corresponding electrical signal with the expansion signal conversion, then said electrical signal is sent to signal processing unit;
Signal processing unit; Comprise the rectification circuit, filter amplification circuit and the single-chip microcomputer that are connected in turn on the circuit board; Be used to receive the electrical signal that detecting signal unit sends; And said electrical signal handled, through output port processing result is sent to signal display unit, output unit and/or alarm unit then;
Signal display unit comprises display device, is used to show detected expansion signal;
Output unit converts the electrical signal of receiving signal processing unit into current signal output through optoelectronic isolator, digital to analog converter and converter successively;
Alarm unit comprises warning indicator and relay, expands to reach the swell value of reporting to the police and being provided with, and the electrical signal of signal processing unit is sent to the warning indicator and the relay of alarm unit simultaneously through optoelectronic isolator.
Steadily export for the signal that guarantees alarm unit, also comprise the delayer that is arranged between signal processing unit and the alarm unit; Said delayer is adjustable delayer.
For the ease of measuring a plurality of swelling parts in a plurality of expansion gears or the same device, optimized technical scheme is, described sensor has one at least, also can be a plurality of of the same type or sensors of various types, and preferred sensor is a linear variable differential transformer (LVDT).
In order to practice thrift cost, further optimized technical scheme is, said display device is the nixie tube display device, is used to show the swell value after the said processing.
In order to guarantee the normal operation of the utility model, further optimized technical scheme is, said monitor also comprises power module, is used to each unit power supply.
Be destroyed for fear of interference or monitor; Further optimized technical scheme is; Also comprise housing; Said signal processing unit, output unit, alarm unit and signal display unit are located in the housing, on said housing, are provided with the interface, the interface that is provided with output unit that connect detecting signal unit, are provided with the window of display device and button is set.
The advantage and the beneficial effect of the utility model are: because the utility model adopts intergrated circuit, steam turbine is had better monitoring and protective value; Owing to be provided with delayer, can guarantee that the signal of alarm unit is steadily exported; Owing to also comprise housing; Said signal processing unit, output unit, alarm unit and signal display unit are located in the housing; On said housing, be provided with the interface, the interface that is provided with output unit that connect detecting signal unit, be provided with the window of display device and button is set, can avoid interference with monitor and be destroyed.
Description of drawings
Fig. 1 is the schematic block circuit diagram of the utility model;
Fig. 2 is the structure rating schematic representation of the utility model;
Fig. 3 is the shell mechanism schematic representation of the utility model.
Wherein, 1, display device; 2, button is set; 3, warning indicator; 4, circuit board; 5, power module; 6, relay; 7, single-chip microcomputer.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
Embodiment 1
Shown in Fig. 1 to 3, the technological scheme of the utility model provides a kind of intelligent thermal expansion monitor, comprising:
Detecting signal unit comprises near the sensor that is arranged on the tested swelling part, is used to gather the expansion signal, and is corresponding electrical signal with the expansion signal conversion, then said electrical signal is sent to signal processing unit;
Signal processing unit; Comprise the rectification circuit, filter amplification circuit and the single-chip microcomputer 7 that are connected in turn on the circuit board 4; Be used to receive the electrical signal that detecting signal unit sends; And said electrical signal handled, through output port processing result is sent to signal display unit, output unit and/or alarm unit then;
Signal display unit comprises display device 1, is used to show detected expansion signal;
Output unit converts the electrical signal of receiving signal processing unit into current signal output through optoelectronic isolator, digital to analog converter and converter successively;
Alarm unit comprises warning indicator 3 and relay 6, expands to reach the swell value of reporting to the police and being provided with, and the electrical signal of signal processing unit is sent to the warning indicator 3 and relay 6 of alarm unit simultaneously through optoelectronic isolator.
On embodiment 1 basis, steadily export for the signal that guarantees alarm unit, also be included between signal processing unit and the alarm unit and be provided with delayer.
On embodiment 2 basis, said delayer is adjustable delayer.
Embodiment 4
On embodiment 1 basis, for the ease of measuring a plurality of swelling parts in a plurality of expansion gears or the same device, optimized technical scheme is that described sensor has one at least, also can be a plurality of of the same type or sensors of various types.
On embodiment 4 basis, preferred sensor is a linear variable differential transformer (LVDT).
On embodiment 1 basis, in order to practice thrift cost, further optimized technical scheme is, said display device 1 is the nixie tube display device, is used to show the swell value after the said processing.
On embodiment 1 basis, in order to guarantee the normal operation of the utility model, further optimized technical scheme is, said monitor also comprises power module 5, is used to each unit power supply.
Embodiment 8
On embodiment 1 basis; Be destroyed for fear of interference or monitor; Further optimized technical scheme is; Also comprise housing, said signal processing unit, output unit, alarm unit and signal display unit are located in the housing, on said housing, are provided with the interface, the interface that is provided with output unit that connect detecting signal unit, are provided with the window of display device 1 and button 2 is set.
When notable change has taken place the position swell value, need adopt remedial measures, machine can continue operation; Should be provided with one-level and report to the police this moment, when the position swell value continues to increase, continues operation like machine and possibly cause damage; The shutdown that should take urgent measure, should be provided with secondary and report to the police this moment.The warning swell value can be set arbitrarily in measuring range.When the expansion parameter surpassed alarm setting value, the tutorial light of device should send alarm signal, and relay 6 begins action simultaneously.The utility model also is provided with button and nixie tube shows, makes things convenient for the user to carry out the parameter setting.In addition, also have the output of 4-20mA analog amount.This device also is designed with the power on time-delay and the time-delay etc. of reporting to the police.Intelligent thermal expansion monitoring and protecting device in this instance is installed simple, and the display precision error is: ± 1%, and alarm range is: the 0-100% full scale.
Be illustrated in figure 1 as the schematic block circuit diagram of the intelligent thermal expansion monitoring and protecting device in the utility model instance.Adopt the 220V ac power supply, signals collecting is accomplished by " LVDT linear variable differential transformer (LVDT) ", through filtering, offers single-chip microcomputer 7 after detection and the processing and amplifying, accomplishes the function that shows and report to the police by single-chip microcomputer 7 again.Also have outputs such as 4-20mA in addition.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (8)
1. an intelligent thermal expansion monitor is characterized in that, comprising:
Detecting signal unit comprises near the sensor that is arranged on the tested swelling part, is used to gather the expansion signal, and is corresponding electrical signal with the expansion signal conversion, then said electrical signal is sent to signal processing unit;
Signal processing unit; Comprise the rectification circuit, filter amplification circuit and the single-chip microcomputer that are connected in turn on the circuit board; Be used to receive the electrical signal that detecting signal unit sends; And said electrical signal handled, through output port processing result is sent to signal display unit, output unit and/or alarm unit then;
Signal display unit comprises display device, is used to show detected expansion signal;
Output unit converts the electrical signal of receiving signal processing unit into current signal output through optoelectronic isolator, digital to analog converter and converter successively;
Alarm unit comprises warning indicator and relay, expands to reach the swell value of reporting to the police and being provided with, and the electrical signal of signal processing unit is sent to the warning indicator and the relay of alarm unit simultaneously through optoelectronic isolator.
2. intelligent thermal expansion monitor as claimed in claim 1 is characterized in that: also comprise being located between signal processing unit and the alarm unit being provided with delayer.
3. intelligent thermal expansion monitor as claimed in claim 2 is characterized in that: said delayer is adjustable delayer.
4. intelligent thermal expansion monitor as claimed in claim 3 is characterized in that: described sensor has one at least.
5. intelligent thermal expansion monitor as claimed in claim 4 is characterized in that: said sensor is a linear variable differential transformer (LVDT).
6. intelligent thermal expansion monitor as claimed in claim 5 is characterized in that: said display device is the nixie tube display device.
7. intelligent thermal expansion monitor as claimed in claim 6 is characterized in that: also comprise power module.
8. like each described intelligent thermal expansion monitor of claim 1 to 7; It is characterized in that: also comprise housing; Said signal processing unit, output unit, alarm unit and signal display unit are located in the housing, on said housing, are provided with the interface, the interface that is provided with output unit that connect detecting signal unit, are provided with the window of display device and button is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204072284U CN202348354U (en) | 2011-10-21 | 2011-10-21 | Intelligent thermal expansion monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204072284U CN202348354U (en) | 2011-10-21 | 2011-10-21 | Intelligent thermal expansion monitoring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348354U true CN202348354U (en) | 2012-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204072284U Expired - Fee Related CN202348354U (en) | 2011-10-21 | 2011-10-21 | Intelligent thermal expansion monitoring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348354U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797065A (en) * | 2017-10-19 | 2018-03-13 | 佘德勇 | Frequency conversion fan low speed operation troubles detects warning circuit |
-
2011
- 2011-10-21 CN CN2011204072284U patent/CN202348354U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797065A (en) * | 2017-10-19 | 2018-03-13 | 佘德勇 | Frequency conversion fan low speed operation troubles detects warning circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20121021 |