CN112113688A - Portable temperature controller unit calibration equipment - Google Patents
Portable temperature controller unit calibration equipment Download PDFInfo
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- CN112113688A CN112113688A CN202011130292.2A CN202011130292A CN112113688A CN 112113688 A CN112113688 A CN 112113688A CN 202011130292 A CN202011130292 A CN 202011130292A CN 112113688 A CN112113688 A CN 112113688A
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- controller
- temperature
- box body
- sensor
- temperature control
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- 238000012795 verification Methods 0.000 claims abstract description 25
- 239000000523 sample Substances 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 11
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002277 temperature effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/007—Testing
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a portable temperature controller unit checking device, comprising: the temperature control system is arranged in the box body and is connected with the temperature sensing probe; the sensor calibration system is arranged in the box body and is connected with the sensor to be tested; the controller checking system is arranged in the box body and is connected with the controller control panel; the display system is arranged outside the box body and is embedded with the box body; the temperature control system, the sensor verification system, the controller verification system and the display system are connected with the power supply module. The invention can realize double calibration of the temperature sensor and the controller, has the advantages of rapid temperature control, wide regulation range, capability of outputting various types of controller voltages, strong calibration universality, good constant temperature effect in the box, rapid positioning of fault equipment and convenience for equipment operation and maintenance.
Description
Technical Field
The invention relates to the technical field of transformer substation control cabinets, in particular to a portable temperature controller unit calibration device.
Background
The temperature controller unit mainly comprises a temperature sensor and a controller, and is usually installed in an equipment mechanism box, a control cubicle and a GIS equipment shell. The Xinjiang area is a typical temperate continental climate, the climate is dry, the temperature is between minus 30 ℃ and 45 ℃, and the day and night temperature changes greatly. When the temperature is low in winter, the temperature controller unit is usually matched with a heat tracing band to heat SF6 gas in GIS equipment, so that the arc extinguishing performance of the equipment is prevented from being reduced due to liquefaction of the SF6 gas. Snow melts in winter and spring season, and the water content increases in the air, and the easy moisture that produces of equipment mechanism case content, if not in time utilize temperature controller unit cooperation heating plate heating to drive damp, the terminal is damped in probably causing the cabinet to the condensation of vapor drips, causes the short circuit risk, causes equipment maloperation or refuses to move, influences equipment steady operation.
At present, the running condition of temperature controller equipment in many transformer substation control cabinets is only detected by operation and maintenance personnel during inspection, whether the heating plate is put into and loop connection condition can only be observed during inspection, reliability of temperature controller running condition and heating plate action accuracy can not be inspected, the temperature controller needs to be dismantled to be detected after the temperature controller is assembled, the temperature controller is detected in a laboratory, time consuming lag and poor effect.
Common calibration equipment on the market is the calibration of single temperature sensor, and is less to the calibration equipment of controller, and the function is comparatively single, and calibration equipment that both functions have concurrently is bulky, carries inconveniently.
Therefore, the calibration work of the temperature controller unit is very important for the stable operation of equipment in the transformer substation.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a portable temperature controller unit calibration device, which is additionally provided with the calibration of a controller on the basis of the calibration of the traditional temperature sensor, can rapidly position a fault point, reduce cost and improve efficiency, has small volume and convenient carrying, adopts forced air circulation and infrared heating in a constant temperature box, ensures no dead angle at constant temperature in the box, has high heating and cooling speed, can reach the set temperature in a short time and is convenient to calibrate.
The technical scheme of the invention is as follows:
a portable thermostat unit verification device comprising:
a box body;
the temperature control system is arranged in the box body and is connected with the temperature sensing probe;
the sensor calibration system is arranged in the box body and is connected with the sensor to be tested;
the controller checking system is arranged in the box body and is connected with the controller control panel;
the display system is arranged outside the box body and is embedded with the box body;
the temperature control system, the sensor verification system, the controller verification system and the display system are connected with the power supply module.
The technical scheme of the invention is that a power switch is arranged on the box body, the power switch is electrically connected with a power supply module, a cooling fan port and a hot air blower port are arranged at the rear side of the box body, and a handle is arranged at the upper side of the box body.
The technical scheme of the invention is that the box body is double-layer stainless steel, and the interior of the box body is filled with high-density polyurethane integral foaming material.
The invention has the further technical scheme that a double-layer high-tensile sealing strip is arranged between the box body and the front side box door.
As a further technical solution of the present invention, the temperature control system includes: the temperature control panel, the refrigeration compressor, the cooling fan, the air heater and the temperature sensing probe; the temperature sensing probe is arranged on the inner side of the box body, and the rear side of the box body is provided with a cooling fan and an air heater; the output end of the temperature sensing probe is connected with a temperature control panel, the output end of the temperature control panel is connected with an air heater and a refrigeration compressor, and the refrigeration compressor is connected with a cooling fan.
The sensor calibration system comprises a sensor connector and a temperature control panel, wherein the sensor connector is connected with a sensor to be detected, and the sensor connector is connected with the temperature control panel.
As a further technical scheme of the invention, a heat-preservation wire sheath is arranged between the sensor connector and the temperature control plate.
The controller inspection system comprises a controller connector arranged outside the box body and a controller control panel arranged inside the box body, wherein the controller connector is electrically connected with the controller to be inspected, and the controller connector is connected with the controller control panel.
As a further technical solution of the present invention, the display system includes a temperature display panel and a controller verification indication panel; the temperature display panel consists of a temperature adjusting knob, a set temperature display screen, an indoor actual temperature display screen, an indoor temperature display normal display and an indoor temperature display fault indicator lamp; the controller inspection indicating panel consists of a sensor temperature measuring display screen, an output voltage display screen, a mode selection knob, a sensor fault indicator, a controller fault indicator and a controller fault indicator.
The invention has the beneficial effects that:
1. the invention can realize double calibration of the temperature sensor and the controller, has the advantages of rapid temperature control, wide regulation range, capability of outputting various types of controller voltages, strong calibration universality, good constant temperature effect in the box, rapid positioning of fault equipment and convenience for equipment operation and maintenance.
2. The invention improves the temperature range of the constant temperature box body, widens the test temperature in the constant temperature box body to-30-45 ℃ by adopting a mode of the combined action of the air heater and the cooling compressor system, is consistent with the practical environment and has strong timeliness.
3. The invention improves the output voltage of the controller, records the model of the controller to be detected and the set value of the voltage of the controller by recording the curve relation of different sensor medium temperatures and output voltages in advance, and the device can automatically select the temperature-output voltage curve to realize the calibration of various temperature controllers, and has rich functions and strong universality.
4. The invention further improves the frame structure of the calibrator, the whole device consists of an inner layer and an outer layer of high-quality stainless steel, the cavity is filled with high-density polyurethane, a double-layer high-tensile sealing strip is adopted between the door and the box body, the airtightness in a test area is ensured, and the whole calibrator has small mass and good heat preservation performance.
Drawings
FIG. 1 is a schematic diagram of a portable thermostat unit calibration device according to the present invention;
FIG. 2 is a structural diagram of a portable thermostat unit checking device according to the present invention;
FIG. 3 is a rear view of a portable thermostat unit calibration apparatus according to the present invention;
FIG. 4 is a wiring diagram of a control loop of the portable thermostat unit calibration device according to the present invention;
FIG. 5 is a logic diagram of the temperature control in the thermostatic chamber according to the present invention;
fig. 6 is a diagram of a sensor verification wiring according to the present invention.
Shown in the figure:
10-a box body, 20-a temperature control system, 30-a sensor checking system, 40-a controller checking system and 50-a display system;
11-power switch, 12-handle;
21-temperature control panel, 22-refrigeration compressor, 23-cooling fan, 24-hot air blower, 25-temperature sensing probe;
31-sensor connector;
41-controller connector, 42-controller control panel;
51-temperature display panel, 52-controller verification indication panel.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
The invention can realize real-time checking of the operation state of the temperature controller unit, and has accurate checking and convenient carrying. The device is suitable for verifying various controllers of different types by programming the temperature-output voltage value curve relation of the temperature sensing elements of various controllers in advance. The device can be alone check-up to sensor and controller, and accurate positioning fault position makes things convenient for maintenance and change, cost reduction increase.
Referring to fig. 1 to 6, wherein fig. 1 is a structural diagram of a portable thermostat unit calibration device system according to the present invention; FIG. 2 is a structural diagram of a portable thermostat unit checking device according to the present invention; FIG. 3 is a rear view of a portable thermostat unit calibration apparatus according to the present invention; FIG. 4 is a wiring diagram of a control loop of the portable thermostat unit calibration device according to the present invention; fig. 5 is a logic diagram of the temperature control in the thermostatic chamber according to the present invention. FIG. 6 is a diagram of a sensor verification connection proposed by the present invention;
as shown in fig. 1, a portable thermostat unit verifying apparatus includes:
the housing 10 is provided with a plurality of openings,
the temperature control system 20 is arranged in the box body and is connected with the temperature probe to be measured;
the sensor calibration system 30 is arranged in the box body and is connected with the sensor to be tested;
the controller checking system 40 is arranged in the box body and is connected with the controller control panel;
the display system 50 is arranged outside the box body and is embedded with the box body;
the temperature control system 20, the sensor verification system 30, the controller verification system 40, and the display system 50 are connected to the power module 60.
In the embodiment of the invention, the temperature control system provides constant temperature for the interior of the box body, constant temperature control is carried out according to a set temperature value, the sensor verification system is used for verifying the temperature sensor to be measured, the controller verification system is used for verifying the controller to be measured, and the verification result is displayed through the display system.
Referring to fig. 2 and 3, a power switch 11 is arranged on the box body 10, the power switch 11 is electrically connected with a power supply module 60, a cooling fan port and a hot air blower port are arranged at the rear side of the box body 10, and a handle 12 is arranged at the upper side of the box body 10. The box body 10 is made of high-density polyurethane integrally foamed, stainless steel materials are adopted inside and outside the box body 10, a double-layer high-tensile sealing strip is arranged between the box body 10 and the front side box door to ensure the airtightness in a test area, and the device has the characteristics of light weight, good heat insulation performance and the like. The calibration of the temperature sensor and the temperature control board can be realized. The tank of the present invention may be a vertical tank with dimensions of 350mm 280mm 300 mm.
In the embodiment of the present invention, the temperature control system 20 includes: a temperature control plate 21, a refrigeration compressor 22, a cooling fan 23, a hot air blower 24 and a temperature sensing probe 25; the temperature sensing probe 25 is arranged at the inner side of the box body 10, and the cooling fan 23 and the air heater 24 are arranged at the rear side of the box body 10; the output end of the temperature sensing probe 25 is connected with the temperature control plate 21, the output end of the temperature control plate 21 is connected with the hot air blower 24 and the refrigeration compressor 22, and the refrigeration compressor 22 is connected with the cooling fan 23.
Referring to fig. 4, the portable thermostat unit calibration apparatus provided in the embodiment of the present invention includes a power supply circuit (i), a temperature probe circuit (ii), a refrigeration compressor control circuit (iii), a hot air blower control circuit (iv), and a sensor actual temperature circuit (v).
The box body is of a double-layer stainless steel structure, a high-density polyurethane foaming material is arranged in the box body to form a constant temperature box body, the temperature Ts is set through an adjusting knob, the temperature sensing probe measures the temperature Ta in the real-time box body, when the error delta between the temperature Ts and the temperature Ta is larger than or equal to +/-0.5 ℃, the compressor or the hot air blower is controlled to start according to a logic principle, and when the error delta between the temperature Ts and the temperature Ta is within a precision range (delta is less than +/-0.5 ℃), the compressor or the hot air blower stops and reciprocates in a circulating mode, so that real. The hot air blower forms hot air by adopting an infrared heating mode; the control logic diagram of the temperature control system is shown in fig. 6.
Referring to fig. 5, in the embodiment of the present invention, the sensor verification system 30 is composed of a sensor connector 31 and a temperature control board 21, the sensor connector 31 is connected to the sensor to be detected, and the sensor connector 31 is connected to the temperature control board 21. A heat-preservation wire sheath is arranged between the sensor connector 31 and the temperature control panel 21.
The sensor to be tested is placed in the constant temperature box, the wiring is connected to the connector of the sensor, different temperatures are set through the temperature control knob, and the difference between the temperature Ta in the box body and the measured temperature Tt of the sensor is compared, so that whether the sensor is qualified or not is accurately verified. If the display error of the two is within 0.5 ℃, the sensor is judged to be qualified, the qualified sensor indicator lamp is on, and if the display error of the two is greater than 0.5 ℃, the sensor is judged to be unqualified, and the fault sensor lamp is on.
In the embodiment of the present invention, the controller checking system 40 includes a controller connector 41 disposed outside the box 10 and a controller control board 42 disposed inside the box 10, the controller connector 41 is electrically connected to the controller to be checked, and the controller connector 41 is connected to the controller control board 42.
In the implementation process, curve relational expressions of different sensor medium temperatures and output voltages can be burnt in a controller control panel in advance, the controller control panel is connected with a controller connector arranged outside a box body, the model number and the set action value of the controller are input, the temperature in the box body is regulated in real time, a check meter outputs voltages Vo corresponding to different temperatures to the controller control panel, if the output voltage corresponding to the temperature reaches the set value of the controller control panel, the controller control panel acts to connect a controller normal indicator light of a controller panel, and if not, a controller fault indicator light is on.
In the embodiment of the present invention, the display system 50 includes a temperature display panel 51 and a controller verification indication panel 52; the temperature display panel 51 is composed of a temperature adjusting knob, a set temperature display screen, an indoor actual temperature display screen, an indoor temperature display normal and an indoor temperature display fault indicator light; the controller checking and indicating panel 52 is composed of a sensor temperature measuring display screen, an output voltage display screen, a mode selection knob, a sensor fault, a sensor normal, a controller normal, and a controller fault indicator light. The display system judges according to the set value and the measured value and gives an alarm instruction.
The invention adopts the serial bus RS485 to carry out data transmission, has high transmission rate and strong anti-interference performance, the temperature display range is-30-45 ℃, the panel of the controller outputs 1-5A/250 VAC, and the working temperature and the output voltage range of the controller are met.
The invention can realize double calibration of the temperature sensor and the controller, has the advantages of rapid temperature control, wide regulation range, capability of outputting various types of controller voltages, strong calibration universality, good constant temperature effect in the box, rapid positioning of fault equipment and convenience for equipment operation and maintenance.
The invention further improves the temperature range of the constant temperature box body, widens the test temperature in the constant temperature box body to-30-45 ℃ by adopting a mode of the combined action of the air heater and the cooling compressor system, is consistent with the practical environment and has strong timeliness.
The invention further improves the output voltage of the controller, records the model of the controller to be detected and the set value of the voltage of the controller by recording the curve relation of different sensor medium temperatures and output voltages in advance, and the device can automatically select the temperature-output voltage curve to realize the calibration of various temperature controllers, and has rich functions and strong universality.
The invention further improves the frame structure of the calibrator, the whole device consists of an inner layer and an outer layer of high-quality stainless steel, the cavity is filled with high-density polyurethane, a double-layer high-tensile sealing strip is adopted between the door and the box body, the airtightness in a test area is ensured, and the whole calibrator has small mass and good heat preservation performance.
The present invention has been described in detail, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (9)
1. A portable thermostat unit verification device, comprising:
a box body;
the temperature control system is arranged in the box body and is connected with the temperature sensing probe;
the sensor calibration system is arranged in the box body and is connected with the sensor to be tested;
the controller checking system is arranged in the box body and is connected with the controller control panel;
the display system is arranged outside the box body and is embedded with the box body;
the temperature control system, the sensor verification system, the controller verification system and the display system are connected with the power supply module.
2. The portable temperature controller unit calibration device of claim 1, wherein a power switch is arranged on the box body, the power switch is electrically connected with the power supply module, a cooling fan port and a hot air blower port are arranged on the rear side of the box body, and a handle is arranged on the upper side of the box body.
3. The portable temperature controller unit calibration device of claim 2, wherein the box body is made of double-layer stainless steel, and the inside of the box body is filled with high-density polyurethane integral foaming material.
4. The portable thermostat unit verifying unit of claim 2, wherein a double-layered high-tensile sealing strip is disposed between the case body and the front side case door.
5. The portable thermostat unit verification device of claim 1, wherein the temperature control system comprises: the temperature control panel, the refrigeration compressor, the cooling fan, the air heater and the temperature sensing probe; the temperature sensing probe is arranged on the inner side of the box body, and the rear side of the box body is provided with a cooling fan and an air heater; the output end of the temperature sensing probe is connected with a temperature control panel, the output end of the temperature control panel is connected with an air heater and a refrigeration compressor, and the refrigeration compressor is connected with a cooling fan.
6. The portable thermostat unit verification device of claim 1, wherein the sensor verification system is comprised of a sensor connector and a temperature control board, the sensor connector is connected to a sensor to be tested, and the sensor connector is connected to the temperature control board.
7. The portable thermostat unit verification device of claim 6, wherein a heat insulating grommet is provided between the sensor connector and the temperature control board.
8. The portable temperature controller unit calibration device of claim 1, wherein the controller checking system comprises a controller connector disposed outside the case and a controller control board disposed inside the case, the controller connector is electrically connected to the controller to be tested, and the controller connector is connected to the controller control board.
9. The portable thermostat unit verification device of claim 1, wherein the display system includes a temperature display panel and a controller verification indication panel; the temperature display panel consists of a temperature adjusting knob, a set temperature display screen, an indoor actual temperature display screen, an indoor temperature display normal display and an indoor temperature display fault indicator lamp; the controller inspection indicating panel consists of a sensor temperature measuring display screen, an output voltage display screen, a mode selection knob, a sensor fault indicator, a controller fault indicator and a controller fault indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011130292.2A CN112113688A (en) | 2020-10-21 | 2020-10-21 | Portable temperature controller unit calibration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011130292.2A CN112113688A (en) | 2020-10-21 | 2020-10-21 | Portable temperature controller unit calibration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112113688A true CN112113688A (en) | 2020-12-22 |
Family
ID=73794186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011130292.2A Pending CN112113688A (en) | 2020-10-21 | 2020-10-21 | Portable temperature controller unit calibration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112113688A (en) |
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2020
- 2020-10-21 CN CN202011130292.2A patent/CN112113688A/en active Pending
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