CN212391577U - Pressure device life detection device - Google Patents
Pressure device life detection device Download PDFInfo
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- CN212391577U CN212391577U CN202020591505.0U CN202020591505U CN212391577U CN 212391577 U CN212391577 U CN 212391577U CN 202020591505 U CN202020591505 U CN 202020591505U CN 212391577 U CN212391577 U CN 212391577U
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Abstract
The utility model relates to a pressure device life-span detection device relates to the air conditioner and detects technical field, and real time monitoring pressure switch's operational aspect is in order to improve detection efficiency and the reliability that detects. The utility model discloses a pressure device life-span detection device, including pressure source, circuit control unit and detecting element, through the control of detecting element to the piece that awaits measuring, can replace the manual work to carry out the operation that detects to pressure switch's life-span, consequently when applying different electric currents, pressure and break-make time to the piece that awaits measuring and carrying out long-term operation experiment, but the operational aspect of real time monitoring piece that awaits measuring, the precision that detects improves and the efficiency of examination all has showing improvement than manual operation to intensity of labour also has showing and reduces.
Description
Technical Field
The utility model relates to an air conditioner detects technical field, especially relates to a pressure device life-span detection device.
Background
Pressure devices, such as a pressure switch of an air conditioner, are used as parts for detecting the pressure of an air conditioner pipeline, have irreplaceable effects on the pressure detection of an air conditioner refrigerant, and once the pressure switch fails, errors are caused in the operation judgment of the air conditioner, so that the quality diagnosis and analysis after sale are influenced.
The main content of the long-term service life detection of the existing pressure switch is as follows: different load currents of 1A, 2A or 3A and the like, different pressures and different on-off time (for example, 1s on and 9s off) are applied to the pressure switch, and after 10 ten thousand times of repetition, whether the pressure switch has a fault or not is manually checked. Therefore, the service life test of the pressure switch at present mainly depends on manual operation, so that the operation condition of the pressure switch cannot be monitored in real time, and the problems of low detection precision, high labor intensity, low detection efficiency and the like exist, so that a pressure switch long-term service life detection device is urgently needed to replace manual detection so as to improve the detection efficiency and the detection reliability.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pressure device life-span detection device for real time monitoring pressure switch's operational aspect is in order to improve the reliability of detection efficiency and detection.
The utility model provides a pressure device life-span detection device, include:
the pressure source is connected with the piece to be detected and used for controlling the on-off of the piece to be detected;
the circuit control unit is electrically connected with the piece to be detected and used for adjusting input parameters applied to the piece to be detected; the circuit control unit is also electrically connected with the pressure source to control the start and stop of the pressure source; and
and the detection unit is respectively and electrically connected with the piece to be detected and the circuit control unit, and is used for respectively monitoring the running information of each piece to be detected in real time and feeding back the running information to the circuit control unit.
In one embodiment, the detection unit includes:
the pressure detection unit is used for detecting a first pressure sensor of the output pressure of the pressure source, and the first pressure sensor is connected with the circuit control unit; and
the circuit detection unit is used for detecting the circuit on-off of the piece to be detected and feeding back the circuit on-off of the piece to be detected to the circuit control unit;
the circuit detection unit comprises a first circuit on-off detection module integrated in the circuit control unit; or a second circuit on-off detection module which is independent of the circuit control unit and is electrically connected with the circuit control unit.
In one embodiment, the input parameter comprises a preset pressure;
an electromagnetic pressure regulating valve is connected between the to-be-detected element and the pressure source, and if the difference value between the pressure value output by the pressure source and the preset pressure, which is obtained by the first pressure sensor, is within a set range, the circuit control unit controls the electromagnetic pressure regulating valve to operate so as to regulate the pressure value output by the pressure source to the preset pressure.
In one embodiment, the detection unit further comprises a second pressure sensor for detecting the pressure of the piece to be detected, and the second pressure sensor is connected with the circuit control unit to feed back the pressure of the piece to be detected to the circuit control unit.
In one embodiment, the device further comprises a connecting unit, and the to-be-tested piece is connected with the circuit control unit through the connecting unit;
the connection unit includes:
the wire holder is electrically connected with the circuit control unit and is electrically connected with the piece to be tested through a power line so as to enable the piece to be tested to be conducted with the circuit control unit; and
and the connector is respectively connected with the piece to be detected and the pressure source.
In one embodiment, the input parameter further comprises a preset current;
the circuit control unit comprises a plurality of loads connected in series and/or in parallel, and different preset currents are applied to the piece to be tested by changing the connection mode among the plurality of loads.
In one embodiment, the input parameters further include preset detection times and preset on-off times thereof.
In one embodiment, the circuit control unit judges whether the piece to be detected operates normally according to the operation information of the piece to be detected fed back by the detection unit, and if not, the circuit control unit stops detection and gives an alarm
In one embodiment, the detection device further comprises a box body, and the connecting unit, the circuit control unit and the detection unit are all arranged in the box body;
the box body is also provided with an input unit and a display unit, and the input unit and the display unit are both electrically connected with the circuit control unit;
the input unit is used for transmitting the input parameters of the piece to be tested to the circuit control unit;
the display unit is used for displaying the running information of the piece to be detected, and the running information comprises the pressure of the piece to be detected, the current of the piece to be detected, the detection times of the piece to be detected, the action times of the piece to be detected and the non-connection abnormal difference value of the piece to be detected.
In one embodiment, a box door is arranged on the front side of the box body, a rear cover plate which can be opened or closed is arranged on the rear side of the box body, and a left side plate which can be opened or closed is arranged on the left side of the box body.
Compared with the prior art, the utility model has the advantages of:
(1) the detection unit can be used for monitoring the to-be-detected piece to replace manual operation for detecting the service life of the pressure switch, so that when different currents, pressures and on-off time are applied to the to-be-detected piece to perform long-term operation tests, the operation condition of the to-be-detected piece can be monitored in real time, the detection precision is improved, the detection efficiency is obviously improved compared with manual operation, and the labor intensity is obviously reduced.
(2) The detection means for the piece to be detected is enriched and perfected, the service life quality of the piece to be detected is evaluated through long-term operation, and the product quality can be improved.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a pressure device life detection apparatus viewed from the front side in an embodiment of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
fig. 3 is a schematic structural diagram of the pressure device life detection apparatus in the embodiment of the present invention, as viewed from the left side;
fig. 4 is a schematic structural view of the pressure device life detection apparatus viewed from the rear side in the embodiment of the present invention;
fig. 5 is a flowchart illustrating an interface operation of a display unit of the pressure device life detection apparatus according to an embodiment of the present invention;
fig. 6 is a flowchart of a method for detecting the lifetime of a pressure device according to an embodiment of the present invention.
Reference numerals:
1-a display unit; 2-stop indicator light; 3-running indicator light; 4-power indicator light; 5-an alarm lamp; 6-stop button; 7-run button; 8-power button; 9-emergency stop switch; 10-a box body; 11-a box door; 12-a connector; 13-a wire holder; 14-a piece to be tested; 15-power supply line; 16-left side panel; 17-a switching power supply; 18-a circuit control unit; 19-load; 20-an electromagnetic pressure regulating valve; 21-a rear cover plate; 22-a pressure source; 23-a first pressure sensor; 24-a second pressure sensor; 25-a linking unit; 26-voltage or current collection module.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-5, according to the first aspect of the present invention, the present invention provides a pressure device life detection device, especially an air conditioner pressure switch long-term life detection device. Particularly, the utility model discloses a pressure device life-span detection device, hereinafter simply referred to as device, it includes box 10, is provided with in the box 10 to be measured 14, circuit control unit 18, pressure source 22 and detecting element.
The device under test 14 may be a pressure device such as a pressure switch.
The pressure source 22 is connected to the to-be-detected element 14 and is configured to control on/off of the to-be-detected element 14, and the pressure source 22 may be a pressure pump or a booster pump, and controls on/off of air pressure of the to-be-detected element 14 by starting and stopping the pressure pump or the booster pump.
The circuit control unit 18 is electrically connected to the pressure source 22 and the device under test 14, respectively. The to-be-tested piece 14 is connected with the circuit control unit 18 through the connection unit 25, the circuit control unit 18 can adjust input parameters applied to the to-be-tested piece 14, and the circuit control unit 18 can also control the start and stop of the pressure source 22 so as to control the on and off of the to-be-tested piece 14. Meanwhile, the on-off signal of the piece to be measured 14 is fed back to the circuit control unit 18 to record the on-off times of the piece to be measured 14.
The detection unit is respectively connected with the piece to be detected 14 and the circuit control unit 18, and the detection unit respectively monitors the operation information of each piece to be detected 14 in real time and feeds the operation information back to the circuit control unit 18. The real-time monitoring of the detecting unit on the piece to be detected 14 can replace manual detection, and the detection efficiency and the detection reliability are improved. When different currents, pressures and on-off time are applied to the piece to be tested 14 for long-term operation test, the operation condition of the piece to be tested 14 can be monitored in real time, so that the quality of the piece to be tested 14 can be analyzed and corrected conveniently.
In addition, because the detecting unit monitors the operation of each piece to be tested 14, the real-time monitoring and the independent control of each piece to be tested 14 can be realized, the phenomenon that invalid personnel cannot find in time in the pressure switch test process can be prevented, and the situation that the test process is not controlled is avoided.
The present invention will be described in detail below by taking the device under test 14 as a pressure switch as an example.
The input parameters applied to the test piece 14 include a predetermined pressure applied to the test piece 14.
The detection unit can monitor the operation pressure and the circuit operation information of the piece to be detected 14 in real time, and particularly comprises a pressure detection unit and a circuit detection unit.
Wherein the pressure detection unit comprises a first pressure sensor 23 for detecting the output pressure of the pressure source 22 and a second pressure sensor 24 for detecting the pressure of the to-be-detected piece 14. Wherein the first pressure sensor 23 is connected to the circuit control unit 18, and the second pressure sensor 24 is connected to the circuit control unit 18 to feed back the pressure of the device under test 14 to the circuit control unit 18.
The first pressure sensor 23 detects the output pressure of the pressure source 22, thereby preventing the overload operation and performing high-pressure protection. The second pressure sensor 24 is a precision pressure sensor.
In order to meet the requirements of adjustable pressure and accurate control, the electromagnetic pressure regulating valve 20 is adopted to realize accurate regulation of the pressure. Specifically, the electromagnetic pressure regulating valve 20 is connected between the device under test 14 and the pressure source 22, and if the difference between the pressure value output by the pressure source 22 and the preset pressure obtained by the first pressure sensor 23 is within a set range, that is, the pressure value output by the pressure source 22 is close to the preset pressure, the circuit control unit controls the electromagnetic pressure regulating valve 20 to operate to regulate the pressure value output by the pressure source 22 to the preset pressure. If the difference between the pressure value output by the pressure source 22 and the preset pressure obtained by the first pressure sensor 23 is not within the set range, that is, the pressure value output by the pressure source 22 is far different from the preset pressure, the pressure source 22 continues to operate to meet the requirement of the preset pressure.
The circuit detection unit is used for detecting the circuit on-off of the piece to be detected 14 and feeding back the circuit on-off of the piece to be detected 14 to the circuit control unit 18.
Alternatively, the circuit detecting unit may be a first circuit on-off detecting module integrated in the circuit control unit 18; in other words, the circuit control unit 18 has self-test on-off capability.
Alternatively, the circuit detection unit may be a second circuit on-off detection module that is independent of the circuit control unit and electrically connected to the circuit control unit.
The first and second circuit on-off detection modules may be voltage or current acquisition modules 26 capable of detecting the on-off of the voltage or current of the dut 14. The voltage or current collecting module 26 is connected to the circuit control unit 18 to feed back a circuit on-off signal of the device under test 14 to the circuit control unit 18.
The input parameters applied to the device under test 14 include a preset current applied to the device under test 14, and the preset current may be different load currents such as 2A or 3A.
As shown in fig. 2, the connection unit 25 includes a wire holder 13 and a connection header 12.
The wire holder 13 is electrically connected to the circuit control unit, and the wire holder 13 is electrically connected to the device under test 14 through a power line 15, so that the device under test 14 is electrically connected to the circuit control unit. Specifically, one of the metal plug ends of the device under test 14 is connected to one end of the power line 15, and the other end of the power line 15 is connected to the wire holder 13, that is, the metal plug end of the pressure switch 14 is electrically connected to the wire holder 13 through the power line 15.
The connector 12 is connected to the device under test 14 and the pressure source 22, respectively. Specifically, the copper tube connecting end of the to-be-tested piece 14 is connected to the connector 12, and the other end of the connector 12 is connected to the air tube of the pressure source 22, so that the pressure source 22 introduces compressed air into the to-be-tested piece 14.
The circuit control unit 18 includes a plurality of loads 19 connected in series and/or in parallel, and applies different preset currents to the device under test 14 by changing the connection manner of the plurality of loads 19.
In some embodiments, the load 19 may be a metal resistor with different resistance values and good heat dissipation performance, and different preset currents may be switched by changing the serial and/or parallel connection manner and changing the conducting amount.
In addition, the input parameters applied to the piece to be detected 14 further include preset detection times and preset on-off times applied to the piece to be detected 14.
In some embodiments, the box 10 is further provided with an input unit and a display unit 1, and the input unit and the display unit 1 are both electrically connected with the circuit control unit 18. The input unit and the display unit 1 may be a touch display screen. Human-computer interaction communication is achieved through the touch display screen, so that input parameters such as current, test times, test pressure, on-off time and the like are transmitted to the circuit control unit 18 through the touch display screen to serve as input signals.
The input unit is used for transmitting input parameters of the piece to be tested 14 to the circuit control unit; in order to meet the requirement of monitoring the running condition of the piece to be detected 14 in real time, the display unit displays the running information of the piece to be detected 14 in real time. The operation information includes the pressure of the object 14, the current of the object 14, the number of times of detection of the object 14, the number of times of operation of the object 14, and the non-connection abnormality difference of the object 14. The non-connection abnormal difference of the to-be-measured object 14 indicates the number of times of the non-normal connection work of the to-be-measured object 14, and may be set according to a user requirement, for example, the non-connection time is 1 time, or 2 times, or 3 times.
The circuit control unit 18 judges whether the piece to be detected 14 operates normally according to the operation information of the piece to be detected 14 fed back by the detection unit, and if not, the detection is stopped and an alarm is given. For example, the judgment can be performed according to the circuit on-off operation information of the to-be-detected piece fed back by the circuit detection unit. Specifically, the circuit control unit 18 may determine whether the to-be-tested object 14 operates normally according to the non-connection abnormal difference of the to-be-tested object 14, and if the non-connection abnormal difference of the to-be-tested object 14 reaches the preset number of times, the apparatus alarms and stops.
The cabinet 10 is provided at a front side thereof with a door 11, and as shown in fig. 1, the link unit 25 is provided at the front side of the cabinet 10, so that the work to be performed on the object 14, such as replacement or maintenance, can be conveniently performed by opening the door 11.
The case 10 is provided at a rear side thereof with a rear cover 21 which can be opened or closed, the electromagnetic pressure regulating valve 20 and the second pressure sensor 24 are provided at a rear side of the case 10, and the electromagnetic pressure regulating valve 20 and the second pressure sensor 24 can be operated by opening the rear cover 21. In addition, a pressure source 22 is also provided on the rear side of the case 10.
The left side of the case 10 is provided with a left side plate 16 that can be opened or closed. The switching power supply 17, the circuit control unit 18, and the load 19 are disposed on the left side of the case 10. The switching power supply 17 supplies power to the control circuit of the apparatus. The circuit control unit 18 may be a PLC that controls the device and performs operations such as signal processing. The above components can be operated by opening the left side plate 16.
As shown in fig. 1, a row of indicator lamps including a stop indicator lamp 2, an operation indicator lamp 3, a power indicator lamp 4, and a warning lamp 5 are provided on a cabinet 10 below a display unit 1. Below the indicator lamp are arranged control buttons comprising a stop button 6, a run button 7, a power button 8 and an emergency stop switch 9.
As shown in fig. 6, according to the second aspect of the present invention, the present invention provides a method for detecting the lifetime of a pressure device by using the above-mentioned device for detecting the lifetime of a pressure device, comprising the following steps:
firstly, inputting input parameters such as preset detection times, preset current, preset pressure, preset on-off time, test group number (A, B, C, D groups) and the like into a touch display screen, starting an operation button 7 after the input parameters are finished, and starting an operation test of the device.
In a second step, the circuit control unit 18 is operated, and the circuit control unit 18 receives an instruction to touch the display screen, and operates the pressure source 22 to compress air.
In a third step, a pressure source 22 is placed in communication with the test object 14 to provide pressure to the test object 14.
Fourth, the device under test 14 is communicated with the circuit control unit 18 through the connection unit 25 to apply the input parameters to the device under test 14.
And fifthly, enabling the pressure detection unit in the detection units to detect the pressure value output by the pressure source 22 and feed back the pressure value to the circuit control unit 18.
The circuit control unit 18 determines whether the pressure value output by the pressure source 22 and the preset pressure are within a set range; if yes, operating the electromagnetic pressure regulating valve 20 between the pressure source 22 and the to-be-measured part 14 to regulate the pressure value output by the pressure source 22 to a preset pressure; if not, then the pressure source 22 continues to operate to meet the pressure requirements.
Sixthly, the circuit control unit 18 controls the required load 19 to be conducted to achieve the set current, so that the to-be-tested piece 14 can operate under pressure and in an electrified mode.
And seventhly, judging whether the unconnected abnormal difference value of the piece to be detected 14 reaches the set times, and if so, stopping detection. The device can alarm and shut down, and the alarm lamp 5 flickers to remind relevant personnel to process.
Eighthly, enabling the detection unit to detect the operation information of the piece to be detected 14; and feeds back the operation information to the circuit control unit 18 and displays the operation information on the display unit 1, thereby completing one pressure on-off detection.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. A pressure device life detection apparatus, comprising:
the pressure source is connected with the piece to be detected and used for controlling the on-off of the piece to be detected;
the circuit control unit is electrically connected with the piece to be detected and used for adjusting input parameters applied to the piece to be detected; the circuit control unit is also electrically connected with the pressure source to control the start and stop of the pressure source; and
and the detection unit is respectively and electrically connected with the piece to be detected and the circuit control unit, and is used for respectively monitoring the running information of each piece to be detected in real time and feeding back the running information to the circuit control unit.
2. The pressure device life detection apparatus according to claim 1, wherein the detection unit includes:
the pressure detection unit is used for detecting a first pressure sensor of the output pressure of the pressure source, and the first pressure sensor is connected with the circuit control unit; and
the circuit detection unit is used for detecting the circuit on-off of the piece to be detected and feeding back the circuit on-off of the piece to be detected to the circuit control unit;
the circuit detection unit comprises a first circuit on-off detection module integrated in the circuit control unit; or a second circuit on-off detection module which is independent of the circuit control unit and is electrically connected with the circuit control unit.
3. The pressure device life detection apparatus according to claim 2, wherein the input parameter includes a preset pressure;
an electromagnetic pressure regulating valve is connected between the to-be-detected element and the pressure source, and if the difference value between the pressure value output by the pressure source and the preset pressure, which is obtained by the first pressure sensor, is within a set range, the circuit control unit controls the electromagnetic pressure regulating valve to operate so as to regulate the pressure value output by the pressure source to the preset pressure.
4. The pressure device life detection apparatus according to claim 2 or 3, wherein the pressure detection unit further includes a second pressure sensor for detecting the pressure of the to-be-detected member, and the second pressure sensor is connected to the circuit control unit to feed back the pressure of the to-be-detected member to the circuit control unit.
5. The pressure device life detection apparatus according to any one of claims 1 to 3, further comprising a connection unit through which the member to be detected is connected to the circuit control unit;
the connection unit includes:
the wire holder is electrically connected with the circuit control unit and is electrically connected with the piece to be tested through a power line so as to enable the piece to be tested to be conducted with the circuit control unit; and
and the connector is respectively connected with the piece to be detected and the pressure source.
6. A pressure device lifetime detection apparatus according to any of claims 1-3, wherein said input parameters further comprise a preset current;
the circuit control unit comprises a plurality of loads connected in series and/or in parallel, and different preset currents are applied to the piece to be tested by changing the connection mode among the plurality of loads.
7. The pressure device life detection apparatus according to any one of claims 1 to 3, wherein the input parameters further include a preset number of detections and a preset number of on-off times thereof.
8. The pressure device life detection device according to any one of claims 1 to 3, wherein the circuit control unit judges whether the piece to be detected operates normally according to the operation information of the piece to be detected fed back by the detection unit, and if not, stops detection and gives an alarm.
9. The pressure device life detection apparatus according to claim 5, further comprising a case, wherein the connection unit, the circuit control unit, and the detection unit are all disposed in the case;
the box body is also provided with an input unit and a display unit, and the input unit and the display unit are both electrically connected with the circuit control unit;
the input unit is used for transmitting the input parameters of the piece to be tested to the circuit control unit;
the display unit is used for displaying the running information of the piece to be detected, and the running information comprises the pressure of the piece to be detected, the current of the piece to be detected, the detection times of the piece to be detected, the action times of the piece to be detected and the non-connection abnormal difference value of the piece to be detected.
10. The pressure device life detection apparatus according to claim 9, wherein a door is provided on a front side of the case, a rear cover plate that can be opened or closed is provided on a rear side of the case, and a left side plate that can be opened or closed is provided on a left side of the case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020591505.0U CN212391577U (en) | 2020-04-20 | 2020-04-20 | Pressure device life detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020591505.0U CN212391577U (en) | 2020-04-20 | 2020-04-20 | Pressure device life detection device |
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| Publication Number | Publication Date |
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| CN212391577U true CN212391577U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020591505.0U Active CN212391577U (en) | 2020-04-20 | 2020-04-20 | Pressure device life detection device |
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| CN (1) | CN212391577U (en) |
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2020
- 2020-04-20 CN CN202020591505.0U patent/CN212391577U/en active Active
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