CN220367540U - Pressure control type vacuum unit control cabinet - Google Patents

Abstract

The utility model discloses a pressure control type vacuum unit control cabinet, which comprises a cabinet body, wherein the cabinet body comprises a display controller, a prompting button area and a circuit arrangement area, and the circuit arrangement area comprises a terminal, a control module and a prompting signal module; the terminal comprises a first wiring terminal connected with a power supply, a second wiring terminal connected with a motor, a third wiring terminal connected with a site pressure transmitter, wherein the site pressure transmitter is connected with a display controller, displays pressure measurement values in real time, regulates and controls upper limit pressure values, and a fourth wiring terminal connected with a communication module remotely transmits the measurement values to a control end; the control module is also connected with the vacuum pump to control the start and stop and automatic rotation of the vacuum pump; the prompt signal module is also connected with the vacuum pump, and prompts overtime and faults of the vacuum pump; the pressure control type vacuum unit control cabinet provided by the utility model adopts the communication module to remotely transmit the measured value, and simultaneously adopts the display controller to display and set the pressure value in real time.

Description

Pressure control type vacuum unit control cabinet

Technical Field

The utility model relates to the field of electrical engineering and automation, in particular to a pressure control type vacuum unit control cabinet capable of displaying measured values and remotely transmitting communication in real time.

Background

The currently adopted pressure control type vacuum water diversion assembly, such AS a YS-AS/YS-AK/YS-AW type vacuum water diversion unit, adopts a pressure switch AS a constant value type pressure original, presets a pressure value before delivery, cannot adjust a pressure design value according to actual working conditions after the assembly arrives at the site, cannot display the pressure value in real time, and causes the difficulty in finding errors or mistakes of a set value; meanwhile, the existing pressure control type control cabinet cannot meet the functions of real-time pressure display, remote transmission, on-site networking and the like.

Therefore, how to make the control cabinet of the pressure control type vacuum unit adjust the pressure design value, display the measured value in real time and remotely transmit the measured value in communication becomes a problem to be solved in the art.

Disclosure of Invention

Based on the defects in the prior art, the utility model aims to provide a pressure control type vacuum unit control cabinet which can be controlled manually and automatically, set pressure design values, display the pressure values in real time and communicate remote physical measurement values.

In order to achieve the purpose, the pressure control type vacuum unit control cabinet provided by the utility model comprises a cabinet body, wherein the cabinet body comprises a display controller, a prompt button area and a circuit arrangement area, and the circuit arrangement area comprises a terminal, a control module and a prompt signal module;

the terminal comprises

A first connection terminal connected to a power source,

a second connecting terminal connected with the motor,

a third wiring terminal connected with a pressure transmitter, wherein the pressure transmitter is connected with a display controller, displays pressure measurement values in real time, regulates and controls upper limit pressure values,

the fourth wiring terminal is connected with the communication module and used for remotely transmitting the measured value to the control end; the control module is also connected with the control module, and the control module comprises starting and stopping of the vacuum pump, automatic rotation delay of the vacuum pump, upper limit pressure value setting, overtime pump adding time setting and overtime alarm time setting;

the fourth wiring terminal is also connected with the prompt signal module, the prompt signal module comprises a manual or automatic position signal, a vacuumizing completion signal, a vacuumizing overtime alarm, a vacuum pump starting signal and a vacuum pump fault signal.

Further, the display control instrument is arranged at the outer side of the cabinet body, is connected with the pressure transmitter, can regulate and control the upper limit pressure value, sets overtime pump adding time and alarm time, displays the pressure value in real time, and is also connected with the communication module to transmit the measured pressure value to the control end.

Further, the communication module is an RS485 communication interface or an RS232 communication interface.

Further, the pressure transmitter is arranged on the working condition site, measures the site pressure value and feeds back to the display controller.

Further, the motor includes a first vacuum pump motor and a second vacuum pump motor.

Further, the control end is a central centralized control system and/or a mobile end.

The pressure control type vacuum unit control cabinet provided by the utility model adopts an RS485 communication interface or an RS232 communication interface to remotely transmit measured values; meanwhile, a display controller is adopted to display and set the pressure value in real time.

Drawings

The utility model is further described below with reference to the drawings and the detailed description.

FIGS. 1a-1b are schematic diagrams of the wiring of the present utility model;

FIG. 2 is a circuit diagram of a power motor of the present utility model;

FIGS. 3a-3b are circuit diagrams of a control module according to the present utility model;

FIG. 4 is a schematic diagram of a signal module according to the present utility model;

FIG. 5a is a circuit layout of the present utility model;

FIG. 5b is a schematic diagram of a prompt button and display controller arrangement of the present utility model;

fig. 5c shows the corresponding contents of the prompt button area in fig. 5 b.

Reference numerals:

1. a first connection terminal; 11. a power supply connection; 12. a first circuit breaker; 13. a first contactor; 14. a first thermal relay; 15. a second circuit breaker; 16. a second contactor; 17. a second thermal relay; 18. a fourth circuit breaker; 19. a fifth circuit breaker; 20. a third circuit breaker;

2. a second connection terminal; 21. a first vacuum pump motor; 22. a second vacuum pump motor;

3. a third connection terminal; 31. a pressure transmitter; 32. a display controller;

4. a fourth connection terminal; 41. a communication module;

42. a first vacuum pump control module; 421. a first push button switch; 422. a second switch button; 423. a first running indicator light; 424. a first energized delay coil; 425. a first stop indicator light; 426. a first fault indicator; 4261 fault indicating coils; 4262 a fail-over normally open point; 427. a first automatic rotation delay circuit; 428.5KA normally closed point;

43. a second vacuum pump control module; 431. a third push button switch; 432. a fourth switch button; 433. a second running indicator light; 434. a second automatic rotation delay circuit; 435. a second energized delay coil; 436. a second stop indicator light; 437. a second fault indicator light;

44. a change-over switch; 45. setting an upper limit pressure;

451. a third current relay;

46. a vacuumizing completion signal; 461. the signal lamp is completed after vacuumizing; 462. a vacuum current relay;

47. setting overtime pump time; 471. a second energized delay coil;

48. setting timeout time; 481. a third electric delay coil;

49. a timeout alarm signal; 491. closing the normally open contact by first time delay; 4911. an alarm signal coil; 4912. a normally open point of an alarm signal; 492. overtime alarm signal lamp; 50. the input is alternated;

501. closing the normally open contact by second delay; 502. time-delay open normally closed contact

6. A wiring arrangement region 6;61 a first line region; 62. a second line region; 63. a third line region;

7. a prompt button area; 81. a first vacuum pump operating signal; 82. a first vacuum pump failure signal; 83. a second vacuum pump operating signal; 84. a second vacuum pump failure signal; 85. a vacuumizing completion prompt signal; 86. vacuumizing overtime alarm prompting signals; 87. automatically switching signals; 88. and a communication module interface.

Detailed Description

The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.

The pressure control type vacuum unit control cabinet provided by the utility model adopts the communication module to remotely transmit the measured value, and simultaneously adopts the display controller to display and set the pressure value in real time.

Referring to fig. 1a and 1b, a schematic wiring diagram of a control cabinet of a pressure control type vacuum unit provided by the utility model is shown.

The pressure control type vacuum unit control cabinet in the example comprises 4 groups of wiring terminals. The first wiring terminal 1 is connected with the power supply connecting wire 11, the second wiring terminal 2 is connected with the first vacuum pump motor 21 and the second vacuum pump motor 22, the third wiring terminal 3 is connected with the site pressure transmitter 31, and the fourth wiring terminal 4 is connected with the communication module 41, the control module and the prompt signal module.

Referring to fig. 2, the first connection terminal 1 is connected to a power connection line 11, a power indicator 111 is provided on the power connection line 11, and when the power is turned on, the power indicator 111 lights to prompt the power on, so as to supply power to the first vacuum pump motor 21 and the second vacuum pump motor 22.

The first connection terminal 1 is connected with a first circuit breaker 12, the first circuit breaker 12 is connected with a first contactor 13, and then is connected with a first thermal relay 14 for overload protection, and the first thermal relay 14 is connected with the second connection terminal 2 so as to be connected with a first vacuum pump motor 21.

The first connecting terminal 1 is simultaneously connected with a second circuit breaker 15, the second circuit breaker 15 is connected with a second contactor 16, and then is connected with a second thermal relay 17 for overload protection, and the second thermal relay 17 is connected with the second connecting terminal 2 so as to be connected with a second vacuum pump motor 22.

When the power is turned on, the power indicator 111 is turned on to supply power to the first vacuum pump motor 21 and the second vacuum pump motor 22.

Referring to fig. 3a-3b, control module circuit diagrams of the pressure control type vacuum unit control cabinet of the present example are shown.

One end of the first circuit breaker 12 is connected to the first vacuum pump control module 42 through the fourth circuit breaker 18. The first vacuum pump control module 42 includes a first push button switch 421 and a second push button switch 422, which control the start and stop of the first vacuum pump and the automatic rotation delay.

A first operation indicator lamp 423 is provided on the start and stop circuit of the first vacuum pump. When the first button switch 421 and the second button switch 423 are in an on state, the start and stop circuits of the first vacuum pump are connected, the first vacuum pump starts to operate, and the first operation indicator lamp 423 is turned on.

The first vacuum pump control module 42 further includes a first automatic rotation delay circuit 427, a normally closed contact and a normally open contact are provided on the first automatic rotation delay circuit 427, a first energizing delay coil 424 is further provided, and the duration of the automatic rotation is set by setting a design value of the first energizing delay coil 424.

The first vacuum pump control module 42 also includes a first stop indicator light 425 and a first fault indicator light 426. When the first push button switch 421 and the second push button switch 422 are in the off state, the first stop indicator light 425 is turned on.

One end of the second circuit breaker 15 is connected to the second vacuum pump control module 43 through the fifth circuit breaker 19. The second vacuum pump control module 43 includes a third push button switch 431 and a fourth push button switch 432, which control the start and stop of the second vacuum pump and the automatic rotation delay.

A second running indicator 433 is provided on the start and stop circuit of the second vacuum pump. When the third button switch 431 and the fourth button 432 switch are in the on state, the start and stop circuit of the second vacuum pump is communicated, the second vacuum pump starts to operate, and the second operation indicator 433 is turned on.

The second vacuum pump control module 43 further includes a second automatic rotation delay circuit 434, and the second automatic rotation delay circuit 434 is provided with a normally closed contact and a normally open contact, and is further provided with a first power-off delay coil 435, and the duration of the automatic rotation is set by setting a design value of the first power-off delay coil 435.

The second vacuum pump control module 43 also includes a second stop indicator light 436 and a second fault indicator light 437. When the third button switch 431 and the fourth button switch 432 are in the off state, the second stop indicator light 436 is turned on.

The control module also includes a change-over switch 44, the change-over switch 44 being switchable between a manual position and an automatic position to control the first vacuum pump and the second vacuum pump to be started or stopped.

The change-over switch 44 is turned to the manual position, and the first vacuum pump or the second vacuum pump can be independently controlled to be started or stopped by the first button switch 421 and the second button switch 422 or the third button switch 431 and the fourth button switch 432 on the panel.

In the automatic position state, if the first vacuum pump fails, the fault indication coil 4261 is turned on to send out a first vacuum pump fault alarm signal, and the first fault indication lamp 426 is turned on; meanwhile, a normally open point 4262 corresponding to the fault switching in the control loop of the second vacuum pump is closed, the operation of the second vacuum pump is automatically switched, and the automatic switching function of fault inspection is realized.

Referring to fig. 3b, the first connection terminal 1 further includes a third circuit breaker 20, and the third circuit breaker 20 is connected to the third connection terminal 3 to be connected to a pressure transmitter 31 provided at the site. One end of the display controller 32 is connected with the site pressure transmitter 31, and can display the pressure value in real time, and the other end is connected with the communication module 41. In this example, the communication module 41 is an RS485 communication interface, and may also adopt an RS232 communication interface to communicate the pressure value displayed in real time to the control end.

The display controller 32 is also connected to a prompt module that includes an upper pressure setting 45, a vacuuming completion signal 46, a timeout-plus-pump time setting 47, a timeout alarm time setting 48, a timeout alarm signal 49 and a rotation input 50. The upper pressure limit can be adjusted by the display controller 32 to set the timeout plus pump time and alarm time.

The upper limit pressure setting 45 is connected to the third current relay 451, and the upper limit pressure value can be set by the display controller 32 connected to the third current relay 451.

The pressure value set by the display controller 32 is not limited, and can be set according to practical situations, for example, in the example, the vacuum pressure is required to be kept at (-20 Kpa to-60 Kpa) on site, the alarm value is set at-20 Kpa by the display controller 32, the return difference value is set at 40Kpa, the vacuum pump is started at-20 Kpa, the pump is stopped at-60 Kpa, the pump is started again when the pressure is reduced to-20 Kpa, and the pressure is always kept in a required range.

The circuit of the vacuumizing completion signal 46 is provided with a vacuumizing completion signal lamp 461, the vacuumizing completion signal lamp 461 is connected with a vacuumizing current relay 462, after the vacuum pressure reaches a set value, the vacuumizing current relay 462 reaches a set current, the circuit of the vacuumizing completion signal 46 is communicated, and the vacuumizing completion signal lamp 461 is turned on to prompt completion of vacuumizing.

A first power-on delay coil 471 is arranged on the overtime pump time setting 47 circuit; a second power-on delay coil 481 is arranged on the overtime alarm time setting 48 circuit; the timeout alarm signal 49 is provided with a current relay connected with a second delay closed normally open contact 491 and a timeout alarm signal lamp 492.

If the pump up time exceeds the set pump up time, the timeout alarm signal 49 is in circuit communication and the timeout alarm signal 492 is on, prompting the pump up time to timeout.

When the change-over switch 44 is switched to the automatic position, the system automatically starts the vacuum unit to vacuumize according to the set value of the display controller 32, automatically stops the equipment after the suction pressure reaches the set return value, and simultaneously feeds back a vacuumizing completion signal, and the vacuumizing completion signal lamp is turned on to enable the system to enter a vacuum maintaining state.

In the vacuum maintaining stage, if the vacuum pressure falls to the set value, the pressure transmitter 31 converts the measured pressure value into an electric signal, and transmits the electric signal to the display controller 32 to control the vacuum pump to be automatically started again, and the vacuum pressure is always maintained within the set range through the circulation.

A first power-on delay coil 471 is arranged on the overtime pump time setting 47 circuit; if the set pressure value is not reached within the set vacuumizing time, the normally open contacts of the first power-on delay coil 471 in the first vacuum pump control circuit 42 and the second vacuum pump control circuit 43 are closed, and the second vacuum pump is automatically increased to simultaneously operate for vacuumizing, so that the overtime pumping function is realized.

In the state that the two pumps are simultaneously operated, the second power-on delay coil 481 starts timing, if the two pumps are simultaneously operated and reach the overtime alarm set time, the second delay closed normally open contact 491 is closed, the alarm coil 4911 is connected, the alarm signal normally open point 4912 is closed to send out an overtime alarm signal, and the overtime alarm function is realized.

The circuit of the rotation input 50 is provided with a second delay closed normally-open contact 501 and a delay open normally-closed contact 502, after the circuit of the rotation input 50 is communicated, the first vacuum pump and the second vacuum pump are alternately input, the delay open normally-closed contact 502 is opened in a delay mode, the second delay closed normally-open contact 501 is closed in a delay mode, after a set delay time is reached, the circuit of the rotation input 50 is opened, and the rotation input of the first vacuum pump and the second vacuum stop pump is realized.

When the automatic position operates for the first time, the 5KA normally closed point 428 is connected, the first vacuum pump operates, at the moment, the first energizing delay coil 424 is energized, and the instantaneous contact is closed to maintain the continuous operation of the first vacuum pump; meanwhile, the 5KA coil is electrified and self-locked after being closed by the 1KF time-delay normally open contact, the normally closed contact is opened, and the normally open contact is closed; after the 5KA normally open point is closed, the second vacuum pump enters a standby running state; when the starting pressure is reached again, the second vacuum pump operates; at this time, the second energizing delay coil 435 is energized, and the snap contact is closed to maintain continuous operation of the second vacuum pump; meanwhile, the 5KA coil is powered off after being disconnected by a 2KF time-delay normally-closed contact, the normally-closed contact is switched on, and the normally-open contact is switched off; after the 5KA normally closed point is connected, the first vacuum pump enters a standby running state. And the automatic start function is realized by circulating in this way.

Referring to fig. 4, a prompt signal module of the control cabinet of the pressure control type vacuum unit in this example is shown.

The reminder signal modules include, but are not limited to, a first vacuum pump run signal 81, a first vacuum pump fault signal 82, a second vacuum pump run signal 83, a second vacuum pump fault signal 84, a vacuum complete reminder signal 46, a vacuum timeout alarm reminder signal 49, an automatic position switch signal 87, and a communication module interface 88.

The prompt signal modules are in one-to-one correspondence with the control modules, for example, the evacuation completion prompt signal 87 corresponds to the evacuation completion 46 in the control module; after the evacuation is completed, the evacuation completion prompt signal 87 is converted into a evacuation completion prompt signal through the communication module and is remotely transmitted to the control end.

Referring to fig. 5a and 5b, there is shown a layout of the control cabinet of the pressure control type vacuum unit of the present example.

A line arrangement area 6 is provided inside the cabinet, corresponding arrangement lines, for example, a first circuit breaker 12 is arranged to the first line area 61 and a second circuit breaker 13 is arranged to the second line area 62, and correspondingly, the first circuit breaker 12 is connected to the first contactor 14 arranged to the third line area 63.

The outside of the cabinet body is provided with a prompt button area 7, corresponding to the internal circuit connection prompt lamps and button switches, and fig. 5c illustrates the corresponding contents of each prompt lamp and button switch, namely a vacuumizing overtime prompt lamp, a first vacuum pump fault prompt lamp, a second vacuum pump fault prompt lamp, a vacuumizing completion prompt lamp, a power signal prompt lamp, a second vacuum pump stop button switch, a second vacuum pump start button switch, a first vacuum pump stop button switch, a first vacuum pump start button switch and a manual-stop-automatic selection switch.

The cabinet body outside also comprises a display controller 32 which is arranged outside the cabinet body and is used for displaying the pressure value in real time and regulating and controlling the upper limit pressure value, the pumping time and other parameters.

The electrical components are all connected with an external main controller and 220V mains supply, the main controller can be conventional known equipment for controlling a computer and the like, detailed description of known functions and known components is omitted in the specific embodiment of the disclosure, and the adopted operation means are consistent with the parameters of the instruments on the market in order to ensure the compatibility of the equipment.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The pressure control type vacuum unit control cabinet comprises a cabinet body and is characterized in that the cabinet body comprises a display control instrument (32), a prompt button area (7) and a circuit arrangement area (6), wherein the circuit arrangement area (6) comprises terminals, a control module and a prompt signal module;

the terminal comprises

A first connecting terminal (1) connected with a power supply,

a second connecting terminal (2) connected with the motor,

a third wiring terminal (3) connected with a pressure transmitter (31), wherein the pressure transmitter (31) is connected with a display controller (32) for displaying pressure measurement values in real time and regulating and controlling upper limit pressure values,

a fourth wiring terminal (4) connected with the communication module (41) for remotely transmitting the measured value to the control end; the control module is also connected with the control module, and the control module comprises starting and stopping of the vacuum pump, automatic rotation delay of the vacuum pump, upper limit pressure value setting, overtime pump adding time setting and overtime alarm time setting;

the fourth wiring terminal (4) is also connected with the prompt signal module, and the prompt signal module comprises a manual or automatic position signal, a vacuumizing completion signal, a vacuumizing overtime alarm, a vacuum pump starting signal and a vacuum pump fault signal.

2. The pressure control type vacuum unit control cabinet according to claim 1, wherein the display control instrument (32) is arranged on the outer side of the cabinet body, is connected with the pressure transmitter (31), can regulate and control an upper limit pressure value, sets overtime pump adding time and alarm time, displays the pressure value in real time, and is also connected with the communication module (41) to transmit the measured pressure value to a control end.

3. Pressure control type vacuum unit control cabinet according to claim 1 or 2, characterized in that the communication module (41) is an RS485 communication interface or an RS232 communication interface.

4. Pressure control type vacuum unit control cabinet according to claim 1 or 2, characterized in that the pressure transmitter (31) is arranged on the working condition site, measures the site pressure value and feeds back to the display controller (32).

5. Pressure controlled vacuum unit control cabinet according to claim 1, characterized in that the motor comprises a first vacuum pump motor (21) and a second vacuum pump motor (22).

6. The pressure control type vacuum unit control cabinet according to claim 1, wherein the control end is a central centralized control system and/or a mobile end.