Turbocharging controller off-line detection circuit and device

Abstract

The utility model discloses an off-line detection circuit and device for a turbocharging controller, the turbocharging controller comprises a plurality of electromagnetic valves, and the off-line detection circuit comprises an air compressor for providing an air source for the electromagnetic valves; the pressure acquisition unit is used for acquiring intake and exhaust pressure of the electromagnetic valve; the current acquisition unit is used for acquiring the working current of the electromagnetic valve; and the upper computer is used for controlling the opening and closing of each electromagnetic valve through the electromagnetic valve control unit and displaying the intake and exhaust pressure and the working current. According to the utility model, the off-line detection of the turbocharging controller is realized, the availability of the turbocharging controller and spare parts which are maintained and completed before being installed on the site can be ensured, and a positive role is played in improving the safety and stability of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power equipment, in particular to an off-line detection circuit and device for a turbocharger controller. Background Art

[0002] In a nuclear power plant, there have been many incidents where the turbocharger controller failure resulted in insufficient diesel engine load capacity, affecting the diesel engine availability.

[0003] The turbocharger controller (hereinafter referred to as the controller) in the MTU emergency diesel engine vortex is composed of 5 5-position 2-way solenoid valves. The speed governor identifies the speed of the turbocharger to drive the opening and closing of the corresponding solenoid valve, thereby directly controlling the load capacity of the emergency diesel engine. Since the air source and power supply signals of the controller require a dedicated interface, and there is a lack of visual and quantifiable detection means, during the overhaul and maintenance, due to the lack of means to verify the controller offline, only simple manual and power supply action verification can be performed online. However, there are many disadvantages in online verification. First, the time window is critical. If the inspection finds that the equipment is abnormal, the replacement process takes a long time, which has a great impact on the overhaul period. Second, after the turbocharger controller is installed online, it is limited by the influence of the on-site environment. It can only roughly verify whether the controller can operate normally and whether there is obvious leakage. The method is simple and the accuracy is poor, which may cover up some more hidden abnormalities, such as the performance of the controller is reduced, the action time is slowed down, and the solenoid valve is stuck, etc., which leaves a great hidden danger to the safe and stable operation of daily equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an off-line detection circuit and device for a turbocharger controller.

[0005] The technical solution adopted by the utility model to solve the technical problem is: constructing an offline detection circuit of a turbocharger controller, the turbocharger controller includes a plurality of solenoid valves, including:

[0006] An air compressor, mechanically connected to the air inlet end of each of the solenoid valves, for providing an air source for the solenoid valves;

[0007] A pressure collection unit, mechanically connected to the air inlet and exhaust ends of each of the solenoid valves, for collecting the air inlet and exhaust pressures of the solenoid valves;

[0008] A current collection unit, electrically connected to the power supply end of each solenoid valve, for collecting the working current of the solenoid valve;

[0009] a solenoid valve control unit, electrically connected to each of the solenoid valves; and

[0010] The host computer is electrically connected to the pressure acquisition unit, the current acquisition unit and the solenoid valve control unit, and is used to control the opening and closing of each solenoid valve through the solenoid valve control unit, and to display the intake and exhaust pressure and the working current.

[0011] Preferably, the turbocharger controller offline detection circuit further includes an analog quantity acquisition unit for converting the intake and exhaust pressure and the operating current; the host computer is electrically connected to the pressure acquisition unit and the current acquisition unit via the analog quantity acquisition unit.

[0012] Preferably, the pressure acquisition unit comprises a plurality of pressure transmitters; each of the pressure transmitters is mechanically connected one-to-one with the air inlet and the air outlet of each of the solenoid valves.

[0013] Preferably, the current collection unit comprises:

[0014] A plurality of current isolation modules are electrically connected one-to-one between the power supply end of each solenoid valve and the analog quantity acquisition unit, and are used to collect the working current, and after signal isolation and conversion processing of the working current, send it to the analog quantity acquisition unit.

[0015] The utility model also constructs a turbocharger controller offline detection device, the turbocharger controller includes multiple solenoid valves, the device includes the turbocharger controller offline detection circuit described above, and a box for accommodating the pressure acquisition unit, the analog quantity acquisition unit and the solenoid valve control unit.

[0016] Preferably, the turbocharger controller offline detection device further comprises:

[0017] The power supply unit is arranged in the box, and is electrically connected to the pressure acquisition unit, the analog quantity acquisition unit, the solenoid valve control unit and each solenoid valve, and is used to output a DC voltage for powering the pressure acquisition unit, the current acquisition unit, the solenoid valve control unit and each solenoid valve.

[0018] Preferably, the power supply unit comprises:

[0019] A control switch for electrically connecting an input power source;

[0020] at least one switching power supply module, configured to convert input power into the DC voltage; and

[0021] An overcurrent protection unit is electrically connected to the control switch and each of the switch power modules, and is used to disconnect the input power and each of the switch power modules when the input power is overcurrent.

[0022] Preferably, a heat dissipation component is provided on the inner wall of the box body, and each of the switching power supply modules comprises a metal shell, and the metal shell is mounted on the heat dissipation component.

[0023] Preferably, the turbocharger controller offline detection device further comprises:

[0024] A partition component is arranged in the box body to define a signal line wiring space and a power line wiring space distributed vertically inside the box body.

[0025] Preferably, the turbocharger controller offline detection device further comprises:

[0026] The automatic retractable hose reel is arranged in the power line wiring space, is electrically connected to the control switch, and is used to connect to the input power supply.

[0027] The utility model has the following beneficial effects: an offline detection circuit of a turbocharger controller in an embodiment is provided; first, a host computer controls the opening and closing of the offline solenoid valve through a solenoid valve control unit, and then an air source is provided to the solenoid valve through an air compressor, and then a pressure acquisition unit is used to acquire the intake and exhaust pressures of the solenoid valve and a current acquisition unit is used to acquire the working current of the solenoid valve, and finally the host computer displays the acquired intake and exhaust pressures and working current, so that the staff can analyze whether the performance of the tested solenoid valve meets the requirements, thereby realizing offline detection of the turbocharger controller, having the advantages of accurate detection and high detection efficiency, ensuring the availability of the repaired turbocharger controller and spare parts before being installed on site, and playing a positive role in improving the safety and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0029] Figure 1 It is a circuit principle block diagram of a turbocharger controller offline detection circuit in some embodiments of the utility model;

[0030] Figure 2 is a circuit schematic diagram of a pressure acquisition unit in some embodiments of the utility model;

[0031] Figure 3 is a circuit schematic diagram of a current acquisition unit in some embodiments of the utility model;

[0032] Figure 4 is a circuit schematic diagram of a power supply unit in some embodiments of the utility model;

[0033] Figure 5 It is a schematic diagram of the structure inside the box in some embodiments of the utility model;

[0034] Figure 6It is a schematic diagram of the structure of the heat dissipation component and the partition component 10 in some embodiments of the present invention. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0036] In the following description, it is necessary to understand that the directions or positional relationships indicated by “front”, “back”, “up”, “down”, “left”, “right”, “longitudinal”, “horizontal”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “head”, and “tail”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific direction. They are only for the convenience of describing the technical solution, and do not indicate that the device or element referred to must have a specific direction. Therefore, they should not be understood as a limitation on the present utility model.

[0037] Figure 1 1 is a circuit principle block diagram of an offline detection circuit of a turbocharger controller in some embodiments of the present invention. The detection circuit can verify the controller's operating performance and air tightness offline. In addition, the turbocharger controller includes a plurality of solenoid valves 100. Figure 1 As shown, the detection circuit includes an air compressor 1, a pressure acquisition unit 2, a current acquisition unit 3, a solenoid valve control unit 5 and a host computer 6.

[0038] The air compressor 1 is mechanically connected to the air inlet end of each solenoid valve 100 , and the air compressor 1 is used to provide an air source for the solenoid valve 100 for detection.

[0039] The pressure collection unit 2 is mechanically connected to the air inlet and the air outlet of each solenoid valve 100, and is used to collect the air inlet and air outlet pressures of the solenoid valve 100. Specifically, the air inlet and air outlet pressures include the air inlet pressure and the air outlet pressure of the solenoid valve 100. It is easy to understand that for the same solenoid valve 100, the air tightness performance of the solenoid valve 100 can be evaluated based on the pressure difference between the air inlet pressure and the air outlet pressure.

[0040] The current collection unit 3 is electrically connected to the power supply end of each solenoid valve 100 , and the current collection unit 3 is used to collect the working current of the solenoid valve 100 .

[0041] The solenoid valve control unit 5 is electrically connected to each solenoid valve 100. Specifically, the solenoid valve control unit 5 can control the corresponding solenoid valve 100 to open or close according to the control instruction from the host computer 6.

[0042] The host computer 6 is electrically connected to the pressure acquisition unit 2, the current acquisition unit 3 and the solenoid valve control unit 5. The host computer 6 is used to control the opening and closing of each solenoid valve 100 through the solenoid valve control unit 5, and to display the intake and exhaust pressure and the working current. Specifically, the host computer 6 can also output relevant control instructions to the solenoid valve control unit 5 through the existing algorithm, and then independently control each solenoid valve 100 to open and close in sequence through the solenoid valve control unit 5, so as to detect the action performance and air tightness of the solenoid valve 100 one by one, which can not only realize the automatic detection function, but also improve the detection efficiency and save labor costs.

[0043] In this embodiment, the staff can obtain the intake and exhaust pressure and working current of each solenoid valve 100 through the display of the host computer 6, so as to accurately know the relevant parameters of the solenoid valve under test, so as to analyze whether the performance of the solenoid valve meets the requirements. It not only realizes the offline detection of the turbocharger controller, but also has the advantages of accurate detection and high detection efficiency, which can ensure the availability of the repaired turbocharger controller and spare parts before they are installed on site, and plays a positive role in improving the safety and stability of the equipment.

[0044] In some embodiments, Figure 1 As shown, the line detection circuit also includes an analog quantity acquisition unit 4 for converting the intake and exhaust pressure and the working current. The host computer 6 is electrically connected to the pressure acquisition unit 2 and the current acquisition unit 3 via the analog quantity acquisition unit 4. Specifically, in this embodiment, the intake and exhaust pressure and the working current are analog signals. The analog quantity acquisition unit 4 first converts the intake and exhaust pressure and the working current into digital signals, and then sends the digital signals to the host computer 6 through a serial port, USB or other forms of communication interface, so that the host computer 6 can collect analog signals even without an ADC port.

[0045] In some embodiments, Figure 2 As shown, the pressure acquisition unit 2 includes a plurality of pressure transmitters 21. Each pressure transmitter 21 is mechanically connected to the air inlet and exhaust ends of each solenoid valve 100 one by one, so as to collect the air pressure information of the air inlet and exhaust ends of each solenoid valve 100. Specifically, the number of pressure transmitters 21 can be configured to be twice the number of solenoid valves 100 in the controller, so that all the solenoid valves in the controller can be automatically detected at one time. Optionally, the number of pressure transmitters 21 is 10. Alternatively, the pressure acquisition unit 2 can also be a pressure detection circuit composed of pressure sensors.

[0046] In some embodiments, Figure 3As shown, the current acquisition unit 3 includes a plurality of current isolation modules 31. Each current isolation module 31 is electrically connected one-to-one between the power supply end of each solenoid valve 100 and the analog quantity acquisition unit 4, and each current isolation module 31 is used to collect the working current of the solenoid valve 100 connected thereto, and after signal isolation and conversion processing of the working current, send it to the analog quantity acquisition unit 4. Specifically, the detection circuit of each current isolation module 31 is connected in series one-to-one on the line between the power supply end and the power supply of each solenoid valve 100, and the detection current output end of the current isolation module 31 is electrically connected to the analog quantity acquisition unit 4 to transmit the working current signal thereto. Optionally, the current isolation module 31 is a current isolation module with a model of CZDL-IDC-10T. In addition, the number of current isolation modules 31 can be 5.

[0047] As an option, the current isolation module 31 may also be a current detection circuit composed of a plurality of current transformers or ammeters.

[0048] In some embodiments, Figure 2 and Figure 3 As shown, the analog quantity acquisition unit 4 includes a first analog quantity acquisition card 4a and a first analog quantity acquisition card 4b. The first analog quantity acquisition card 4a and the second analog quantity acquisition card 4b include 8 acquisition channels respectively. Among them, 3 acquisition channels in the first analog quantity acquisition card 4a and 7 acquisition channels in the second analog quantity acquisition card 4b are electrically connected to each pressure transmitter 21 one-to-one, respectively, and the remaining 5 acquisition channels of the first analog quantity acquisition card 4a are electrically connected to each current isolation module 31 one-to-one, respectively, and the remaining acquisition channels of the second analog quantity acquisition card 4b can serve as spare acquisition channels. Optionally, the first analog quantity acquisition card 4a and the second analog quantity acquisition card 4b are analog quantity acquisition cards with a model of USB-5817-AE.

[0049] In some embodiments, Figure 3As shown, the solenoid valve control unit 5 includes a first relay C01, a second relay C02, a third relay C03, a fourth relay C04, a fifth relay C05 and a relay output acquisition card (not shown). The relay output acquisition card is electrically connected to the host computer to receive the solenoid valve control instruction. The relay output acquisition card is electrically connected to the excitation coils of the first relay C01, the second relay C02, the third relay C03, the fourth relay C04 and the fifth relay C05 respectively. The normally open circuits of the first relay C01, the second relay C02, the third relay C03, the fourth relay C04 and the fifth relay C05 are respectively connected in series one by one on the circuit in which each current isolation module 31 is electrically connected to the power supply end of the solenoid valve 100. It is easy to understand that the relay output acquisition card can output the relevant excitation coil drive signal to the first relay C01, the second relay C02, the third relay C03, the fourth relay C04 and the fifth relay C05 according to the solenoid valve control instruction, so as to control the turning off or closing of the corresponding relay, and then control the opening and closing of the corresponding solenoid valve. Optionally, the relay output acquisition card is a relay output acquisition card with a model number of USB-5860-AE.

[0050] like Figure 5 and Figure 6 As shown, the utility model also provides a turbocharger controller offline detection device. The detection device includes the turbocharger controller offline detection circuit provided by the utility model embodiment, and a box 8 for accommodating a pressure acquisition unit 2, an analog quantity acquisition unit 4 and a solenoid valve control unit 5.

[0051] In some embodiments, Figures 2 to 5 As shown, the detection device also includes a power supply unit 9. The power supply unit 9 is disposed in the box 8 and is electrically connected to the pressure acquisition unit 2, the analog quantity acquisition unit 4, the solenoid valve control unit 5 and each solenoid valve 100. The power supply unit 9 is used to output a DC voltage for power supply to the pressure acquisition unit 2, the current acquisition unit 3, the analog quantity acquisition unit 4, the solenoid valve control unit 5 and each solenoid valve 100.

[0052] In some embodiments, Figure 4 As shown, the power supply unit 9 includes a control switch 91 , an overcurrent protection unit 93 and at least one switch power supply module 92 .

[0053] The control switch 91 is used to electrically connect the input power supply to control the on and off of the input power supply. In addition, the input voltage can be 220V AC mains. Optionally, the control switch 91 is a circuit breaker, a contactor or a boat switch.

[0054] Each switch power supply module 92 is used to convert the input power into a DC voltage, thereby supplying power to the pressure acquisition unit 2 , the current acquisition unit 3 , the analog quantity acquisition unit 4 , the solenoid valve control unit 5 and each solenoid valve 100 .

[0055] In order to improve the detection accuracy and avoid the interference caused by the operation of a certain unit affecting the operation of other units through the power supply, in some embodiments, such as Figures 2 to 4 As shown, there are three switch power modules 92, one of which is used to supply power to each solenoid valve 100 and the solenoid valve control unit 5 (not shown), another switch power module 92 is used to supply power to the pressure acquisition unit 2 (not shown) and the current acquisition unit 3, and the remaining one is used to supply power to the analog acquisition unit 4. Optionally, the switch power module 92 is a Phoenix fourth-generation high-performance QUINT power supply, which has the advantages of wide-range voltage input, SFB (selective fuse) technology, built-in gas discharge tube, 20ms mains fault buffer time and strong anti-interference, etc., which can ensure high system availability and shock resistance.

[0056] The overcurrent protection unit 93 is electrically connected to the control switch 91 and each switch power module 92. The overcurrent protection unit 93 is used to disconnect the input power and each switch power module 92 when the input power is overcurrent. Specifically, the overcurrent protection unit 93 includes two fuses, which are respectively connected in series to the neutral line and the live line led out of the control switch 91. When the neutral line or the live line is overcurrent due to equipment failure, the fuse will melt, disconnecting the input power, thereby avoiding the aggravation of the fault accident.

[0057] In some embodiments, Figure 6 As shown, a heat dissipation component 81 is provided on the inner wall of the box body 8, and each switching power module 92 includes a metal shell, and various electronic components constituting the switching power module 92 are accommodated in the metal shell. The metal shell is mounted on the heat dissipation component 81. Specifically, the heat dissipation component 81 is arranged at the bottom of the inner wall, and the bottom of the metal shell is mounted on the heat dissipation component 81, which can increase the heat dissipation area of ​​the switching power module 92 to ensure the stability of the operation of the switching power module 92. At the same time, no device is installed on the top of the metal shell, so that uncontrollable temperature effects will not occur due to the upward volatilization of heat, which can avoid the heat generated by the switching power module 92 from affecting the operation of other devices. Optionally, the heat dissipation component 81 is a metal plate, and the metal plate is preferably made of a metal material with good thermal conductivity.

[0058] In some embodiments, Figure 6As shown, the detection device also includes a partition component 10. The partition component 10 is arranged in the box body 8 to define the signal line wiring space and the power line wiring space distributed in the upper and lower parts of the box body 8. Specifically, the power line wiring space is located at the lower part of the partition component 10, and is used to arrange the input and output power lines of the switching power module 92, specifically including the input power line, and the DC voltage output line of the switching power module 92 electrically connected to the pressure acquisition unit 2, the current acquisition unit 3, the analog quantity acquisition unit 4, the solenoid valve control unit 5 and each solenoid valve 100. The signal line wiring space is located at the upper part of the partition component 10, and is used to arrange the signal lines between the pressure acquisition unit 2, the current acquisition unit 3, the analog quantity acquisition unit 4, the solenoid valve control unit 5 and each solenoid valve 100, as shown Figure 6 As shown, the interface of each unit is set on the operating table 40 on the partition component 10. When testing, the staff only needs to connect the host computer 6 and the electromagnetic valve under test through the relevant interface on the partition component 10 because the power line has been connected in advance. It is easy to understand that the power line and the signal line are separated by different physical spaces, which can not only avoid the coupling of power supply noise to the signal, but also prevent the staff from short circuiting caused by improper operation when connecting the electromagnetic valve under test and the host computer. Optionally, the partition component 10 is a flat plate made of insulating material.

[0059] In some embodiments, Figure 1 As shown, the detection device also includes an automatic retractable hose reel 20. The automatic retractable hose reel 20 is arranged in the power line wiring space, and the automatic retractable hose reel 20 is electrically connected to the control switch 91. The automatic retractable hose reel 20 is used to connect the input power supply so that the cable used to connect the input power supply can be automatically retracted.

[0060] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. A turbocharger controller offline detection circuit, the turbocharger controller comprising a plurality of solenoid valves (100), characterized in that: include: An air compressor (1) mechanically connected to the air inlet end of each of the solenoid valves (100) and used to provide an air source for the solenoid valves (100); A pressure collection unit (2) is mechanically connected to the air inlet and air outlet ends of each of the solenoid valves (100) and is used to collect the air inlet and air outlet pressures of the solenoid valves (100); A current collection unit (3), electrically connected to a power supply end of each of the solenoid valves (100), and used for collecting a working current of the solenoid valve (100); A solenoid valve control unit (5) electrically connected to each of the solenoid valves (100); and The host computer (6) is electrically connected to the pressure acquisition unit (2), the current acquisition unit (3) and the solenoid valve control unit (5), and is used to control the opening and closing of each solenoid valve (100) through the solenoid valve control unit (5), and to display the intake and exhaust pressures and the working current.

2. The turbocharger controller offline detection circuit according to claim 1, characterized in that: It also includes an analog quantity acquisition unit (4) for converting the intake and exhaust pressure and the operating current; the host computer (6) is electrically connected to the pressure acquisition unit (2) and the current acquisition unit (3) via the analog quantity acquisition unit (4).

3. The turbocharger controller offline detection circuit according to claim 2, characterized in that: The pressure collection unit (2) comprises a plurality of pressure transmitters (21); each of the pressure transmitters (21) is mechanically connected one-to-one to the air inlet and the air outlet of each of the solenoid valves (100).

4. The turbocharger controller offline detection circuit according to claim 3, characterized in that: The current collection unit (3) comprises: A plurality of current isolation modules (31) are electrically connected one-to-one between the power supply end of each solenoid valve (100) and the analog quantity acquisition unit (4), and are used to collect the working current, perform signal isolation and conversion processing on the working current, and then send it to the analog quantity acquisition unit (4).

5. An off-line detection device for a turbocharger controller, the turbocharger controller comprising a plurality of solenoid valves (100), characterized in that: It comprises the turbocharger controller offline detection circuit as claimed in any one of claims 1 to 4, and a box (8) for accommodating the pressure acquisition unit (2), the analog quantity acquisition unit (4) and the solenoid valve control unit (5).

6. The turbocharger controller offline detection device according to claim 5, characterized in that: Also includes: A power supply unit (9) is arranged in the box (8), and is electrically connected to the pressure acquisition unit (2), the analog quantity acquisition unit (4), the solenoid valve control unit (5), and each of the solenoid valves (100), and is used to output a DC voltage for power supply to the pressure acquisition unit (2), the current acquisition unit (3), the solenoid valve control unit (5), and each of the solenoid valves (100).

7. The turbocharger controller offline detection device according to claim 6, characterized in that: The power supply unit (9) comprises: A control switch (91) for electrically connecting to an input power source; at least one switching power supply module (92) for converting input power into the DC voltage; and An overcurrent protection unit (93) is electrically connected to the control switch (91) and each of the switch power modules (92), and is used to disconnect the connection between the input power and each of the switch power modules (92) when the input power is overcurrent.

8. The turbocharger controller offline detection device according to claim 7, characterized in that: A heat dissipation component (81) is provided on the inner wall of the box body (8), and each of the switch power modules (92) comprises a metal shell, which is mounted on the heat dissipation component (81).

9. The turbocharger controller offline detection device according to claim 7, characterized in that: Also includes: A partition component (10) is arranged in the box body (8) to define a signal line wiring space and a power line wiring space distributed vertically inside the box body (8).

10. The turbocharger controller offline detection device according to claim 9, characterized in that: Also includes: The automatic retractable hose reel (20) is arranged in the power line wiring space and is electrically connected to the control switch (91) for connecting to an input power source.

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