阅读说明：本技术 一种泵组切换控制箱 (Pump package switching control box ) 是由 范琛琛 杨欣 季睿 何志明 沈梦梦 于 2021-10-18 设计创作，主要内容包括：本发明公开了一种泵组切换控制箱包括直流输入端；交流输入端；第一接触器,与直流输入端连接并与第一动力泵串联后与交流输入端连接；第二接触器,与第一接触器并联后与直流输入端连接并与第二动力泵串联后与交流输入端连接；第一继电器,与直流输入端连接,第一继电器的第一触点与第一接触器的主触点连接,第一继电器的第二触点与第二接触器的主触点连接；CAN通讯模块,与交流输入端电性连接,CAN通讯模块的信号输入端与上位机通讯连接,CAN通讯模块的信号输出端分别与第一接触器和第二接触器通讯连接；转换继电器,转换继电器的第一触点连接于第一继电器和直流输入端之间。本发明提供的泵组切换控制箱提高海上作业的效率和安全性。(The invention discloses a pump set switching control box, which comprises a direct current input end; an alternating current input end; the first contactor is connected with the direct current input end, connected with the first power pump in series and then connected with the alternating current input end; the second contactor is connected with the direct current input end after being connected with the first contactor in parallel, is connected with the second power pump in series and is connected with the alternating current input end; the first relay is connected with the direct current input end, a first contact of the first relay is connected with a main contact of the first contactor, and a second contact of the first relay is connected with a main contact of the second contactor; the CAN communication module is electrically connected with the alternating current input end, the signal input end of the CAN communication module is in communication connection with the upper computer, and the signal output end of the CAN communication module is in communication connection with the first contactor and the second contactor respectively; and the first contact of the switching relay is connected between the first relay and the direct current input end. The pump set switching control box provided by the invention improves the efficiency and safety of offshore operation.)

1. The utility model provides a pump package switching control box which characterized in that, with first power pump and second power pump electric connection, is connected with the host computer communication, includes:

the device comprises a direct current input end, an alternating current input end, a first contactor, a second contactor, a conversion relay, a first relay and a CAN communication module;

the second contactor and the first contactor are connected in parallel, the second contactor and the first contactor are connected to two ends of the direct current input end, the first contactor and the first power pump are connected in series and then connected to two ends of the alternating current input end, and the second contactor and the second power pump are connected in series and then connected to the alternating current input end;

the switching relay and the first relay are sequentially connected between the direct current input end and the first contactor as well as between the direct current input end and the second contactor, and two ends of the alternating current input end are connected with the CAN communication module;

a first contact of the conversion relay is connected between the first relay and the direct current input end and is used for switching the conduction state of the first relay and the CAN communication module;

a first contact of the first relay is connected with a main contact of the first contactor, and a second contact of the first relay is connected with a main contact of the second contactor;

the signal input end of the CAN communication module is in communication connection with the upper computer, and the signal output end of the CAN communication module is in communication connection with the first contactor and the second contactor respectively.

2. A pump package switching control box according to claim 1, characterized in that:

when the first relay is in a first state, a first contact of the first relay is closed and connected with the first contactor, the first contactor is communicated with the direct current input end and adsorbs the contact of the first contactor to be closed, and the first power pump is connected with the alternating current input end through the first contactor with the closed contact;

the first relay is in a second state, a second contact of the first relay is closed and is connected with the second contactor, the second contactor is communicated with the direct current input end and adsorbs the contact of the second contactor is closed, and the second power pump is connected with the alternating current input end through the second contactor with the contact closed.

3. A pump package switching control box according to claim 1, characterized in that:

the first relay is electrically connected with a liquid level sensing device arranged on the first power pump;

when the liquid level sensing device detects that the liquid level of the first power pump is higher than or equal to a preset liquid level, a first contact of the first relay is closed and connected with the first contactor;

when the liquid level sensing device detects that the liquid level of the first power pump is lower than a preset liquid level, a second contact of the first relay is closed and connected with the second contactor.

4. A pump group switching control box according to claim 1, characterized by further comprising:

the first aviation plug assembly is connected with the alternating current input end and used for accessing alternating current;

the second aerial plug assembly is connected with the first power pump and used for outputting alternating current to the first power pump;

the third aerial plug assembly is connected with the second power pump and used for outputting alternating current to the second power pump;

the fourth aviation plug assembly is connected with the upper computer and used for outputting a feedback signal;

and the fifth aerial plug assembly is connected between the CAN communication module and the first contactor and between the second contactor.

5. A pump package switching control box according to claim 4, characterized by further comprising:

the first button switch and the second button switch are connected between the direct current input end and the first relay, and the first button switch, the second button switch and the conversion relay are connected in parallel and are respectively used for controlling the conduction states of the first relay and the CAN communication module;

the first button switch and the second button switch are connected with the fourth aerial plug assembly.

6. A pump package switching control box according to claim 4, characterized by further comprising:

overload and over-temperature relays;

the overheating relay is connected with the overload relay in series and is sequentially connected between the direct current input end and the first relay;

the second contact of the overload relay is connected with the second contact of the overheat relay in parallel and then connected with the buzzer in series at the direct current input end;

and after the third contact of the overload relay is connected with the third contact of the overheat relay in parallel, the third contact of the overload relay is connected with the fourth aviation plug assembly.

7. A pump group switching control box according to claim 6, characterized by further comprising:

the pulse relay is connected in series with the overload relay and is connected between the direct current input end and the overload relay;

the temperature relay is connected in series with the overheating relay and is connected between the direct current input end and the overheating relay;

the first indicator light is connected in parallel with the overload relay and is connected between the direct current input end and the first relay;

and the second indicator light is connected between the direct current input end and the first relay in parallel with the overheating relay.

8. Pump package switching control box according to claim 4, characterized in that:

the second contact of the switching relay is connected between the third indicator light and the direct current input end;

a third contact of the switching relay is connected between a fourth indicator light and the direct current input end;

and a fourth contact of the conversion relay is connected with the fourth aviation plug assembly.

9. A pump package switching control box according to claim 4, characterized by further comprising:

a second relay, a first contact of the second relay being connected between the direct current input terminal and the first contactor;

and the second contact and the third contact of the second relay are respectively connected with the fourth aviation plug component.

10. A pump group switching control box according to claim 1, characterized by further comprising:

the fifth indicator light is connected between the direct current input end and the first relay and used for indicating the power supply condition of a power supply;

the sixth indicator light is connected in parallel with the first contactor, is connected between the first contact of the first relay and the direct current input end, and is used for indicating the communication condition of the first contactor;

and the seventh indicator light is connected in series with the second contactor, is connected between the second contact of the first relay and the direct current input end, and is used for indicating the communication condition of the second contactor.

Technical Field

The invention relates to the technical field of water pump control, in particular to a pump set switching control circuit and a control box.

Background

When an offshore operation project is performed, if offshore operation or dangerous sea surface operation is required and the weather condition is severe, an unmanned ship is required to move to go out of the sea on the premise of ensuring the safety of personnel.

However, due to the limitation of the control system of the unmanned ship, only one power pump is often controlled on the ship for the ship to carry out offshore operation, the pump set cannot be flexibly selected to cope with complex situations like manual operation when the ship goes out of the sea, the ship cannot switch the pump set according to different situations when an emergency situation occurs or the pump set needs to be switched, and the efficiency and the safety are reduced during engineering operation.

Therefore, a pump set switching control circuit is needed at present, which can automatically switch the working states of pump sets under different conditions, realize mutual cooperation among pump sets with different functions, and improve the efficiency and safety of offshore operation.

Disclosure of Invention

In order to solve the technical problems that a pump group cannot be flexibly selected to deal with complex situations in the traditional method, and when an emergency situation occurs or the pump group needs to be switched, a ship cannot switch the pump group according to different situations, and the efficiency and the safety are reduced during engineering operation, the invention provides a pump group switching control circuit and a control box, and the specific technical scheme is as follows:

the invention provides a pump set switching control box which is electrically connected with a first power pump and a second power pump and is in communication connection with an upper computer.

The first contactor is connected with the direct current input end, connected with the first power pump in series and then connected with the alternating current input end;

the second contactor is connected with the direct current input end after being connected with the first contactor in parallel, and is connected with the alternating current input end after being connected with the second power pump in series;

a first relay is connected with the direct current input end, a first contact of the first relay is connected with a main contact of the first contactor, and a second contact of the first relay is connected with a main contact of the second contactor;

the CAN communication module is electrically connected with the alternating current input end, the signal input end of the CAN communication module is in communication connection with the upper computer, and the signal output end of the CAN communication module is in communication connection with the first contactor and the second contactor respectively;

switching relay the first contact of the switching relay is connected between the first relay and the dc input.

The pump set switching control box provided by the invention selects two control modes between CAN communication control and local control through the switching relay, attracts a contact of a first contactor or a second contactor through transmitting a communication signal in a CAN communication control mode, attracts the contact of the first contactor or the second contactor through transmitting an electric signal in a local control mode, and communicates an alternating current power supply and a first power pump or a second power pump through the attracted contact of the first contactor or the second contactor, so that two working states of remote communication control and local control of the pump set are automatically switched according to different conditions, mutual cooperation between the first power pump and the second power pump is realized, and the efficiency and safety of offshore operation are improved.

Further, the invention also provides a pump set switching control box:

when the first relay is in a first state, a first contact of the first relay is closed and connected with the first contactor, the first contactor is communicated with the direct current input end and adsorbs the contact of the first contactor to be closed, and the first power pump is connected with the alternating current input end through the first contactor with the closed contact;

the first relay is in the second state, the second contact of the first relay is closed and connected with the second contactor, the second contactor is communicated with the direct current input end and adsorbs the contact of the second contactor is closed, and the second power pump is connected with the alternating current input end through the second contactor with the contact is closed.

The pump set switching control box provided by the invention has two working states in a local control mode, and the contactors connected into the circuit are different due to different closed first relay contacts in each state. According to the invention, the mutual cooperation between the first power pump and the second power pump is realized through the difference of the closing states of the relay contacts, and the efficiency of offshore operation is improved.

Further, the invention also provides a pump set switching control box:

the first relay is electrically connected with a liquid level sensing device arranged on the first power pump;

when the liquid level sensing device detects that the liquid level of the first power pump is higher than or equal to a preset liquid level, a first contact of the first relay is closed and connected with the first contactor;

when the liquid level sensing device detects that the liquid level of the first power pump is lower than a preset liquid level, a second contact of the first relay is closed and connected with the second contactor.

The pump set switching control box provided by the invention is connected with a liquid level sensing device arranged on a first power pump, and under a local control mode, a contact closed by a first relay is switched according to the liquid level in the first power pump, so that the switching of the working state between the first power pump and a second power pump is controlled according to the liquid level in the first power pump under the local control mode.

Further, the present invention also provides a pump set switching control box, further comprising:

the first aviation plug assembly is connected with the alternating current input end and used for accessing alternating current;

the second aerial plug assembly is connected with the first power pump and used for outputting alternating current to the first power pump;

the third aerial plug assembly is connected with the second power pump and used for outputting alternating current to the second power pump;

the fourth aviation plug assembly is connected with the upper computer and used for outputting a feedback signal;

and the fifth aerial plug assembly is connected between the CAN communication module and the first contactor and between the second contactor.

The pump set switching control box provided by the invention is provided with a plurality of aerial plug assemblies for controlling the box to access and output electric signals and communication signals, and the aerial plug assemblies transmit signals to realize the switching of two control modes of CAN communication control and local control and the switching of the working states of the first power pump and the second power pump, so that the safety of offshore operation is improved.

Further, the present invention also provides a pump set switching control box, further comprising:

the first button switch is connected between the direct current input end and the first relay and is connected with the conversion relay in parallel;

the second button switch is connected between the direct current input end and the first relay and is connected with the conversion relay in parallel;

the first button switch and the second button switch are connected with the fourth aerial plug assembly.

The pump set switching control box provided by the invention respectively controls the opening and closing of the CAN communication control mode and the local control mode through the two button switches, the two switches independently control and increase the safety of circuit control, and the opening and closing states of the CAN communication control mode and the local control mode are fed back to the upper computer through the fourth aviation plug component, so that the opening and closing states of the CAN communication control mode and the local control mode are visually displayed, and the safety of offshore operation is improved.

Further, the present invention also provides a pump set switching control box, further comprising:

the overload relay is connected between the direct current input end and the first relay;

the overheating relay is connected in series with the overload relay and is connected between the direct current input end and the first relay;

the second contact of the overload relay is connected with the second contact of the overheat relay in parallel and then connected with the buzzer in series at the direct current input end;

and after the third contact of the overload relay is connected with the third contact of the overheat relay in parallel, the third contact of the overload relay is connected with the fourth aviation plug assembly.

The pump set switching control box provided by the invention reflects the overload condition and the overheat condition of the circuit through the overload relay and the overheat relay, gives an alarm when the circuit is overloaded and overheated through the buzzer for comprehensive alarm, and feeds back the working conditions of the overload relay and the overheat relay to the upper computer through the fourth aviation plug component in real time, so that the safety of offshore operation is improved.

Further, the present invention also provides a pump set switching control box, further comprising:

the pulse relay is connected in series with the overload relay and is connected between the direct current input end and the overload relay;

the temperature relay is connected in series with the overheating relay and is connected between the direct current input end and the overheating relay;

the first indicator light is connected in parallel with the overload relay and is connected between the direct current input end and the first relay;

and the second indicator light is connected between the direct current input end and the first relay in parallel with the overheating relay.

The pump set switching control box provided by the invention controls the switching of the overload relay and the overheating relay through the pulse relay and the temperature relay respectively, and the indicating lamps are arranged on the circuits of the pulse relay and the temperature relay respectively, so that the fault reason can be accurately identified according to the conditions of the indicating lamps, and the maintenance efficiency when the fault problem occurs in the offshore operation process is improved.

Further, the invention also provides a pump set switching control box:

the second contact of the switching relay is connected between the third indicator light and the direct current input end;

a third contact of the switching relay is connected between a fourth indicator light and the direct current input end;

and a fourth contact of the conversion relay is connected with the fourth aviation plug assembly.

The pump set switching control box provided by the invention is respectively connected with the indicating lamps in the circuits of the second contact and the third contact of the switching relay, the working mode of the control box can be visually embodied through the working condition of the indicating lamps, and the working mode of the control box is fed back to the upper computer through the fourth aviation plug component.

Further, the present invention also provides a pump set switching control box, further comprising:

a second relay, a first contact of the second relay being connected between the direct current input terminal and the first contactor;

the second contact of the second relay is connected with the fourth aviation plug assembly;

and a third contact of the second relay is connected with the fourth aviation plug assembly.

According to the pump set switching control box provided by the invention, the second relay is connected between the first contactor and the direct current input end to control the working state of the first power pump, and the working state of the first power pump is fed back to the upper computer through the fourth aviation plug component.

Further, the present invention also provides a pump set switching control box, further comprising:

the fifth indicator light is connected between the direct current input end and the first relay;

a sixth indicator light connected in parallel with the first contactor and connected between the first contact of the first relay and the direct current input end;

and the seventh indicator light is connected in series with the second contactor and is connected between the second contact of the first relay and the direct current input end.

The pump unit switching control box provided by the invention represents the power supply condition in the pump unit switching control box through the working state of the fifth indicator light, represents the connection condition of the first contactor through the working state of the sixth indicator light, and represents the connection condition of the second contactor through the working state of the seventh indicator light.

The invention provides a pump set switching control circuit and a control box, which at least comprise the following technical effects:

(1) the remote communication control and the local control of the pump set can be automatically switched according to different conditions, the mutual cooperation between the first power pump and the second power pump can be realized, and the efficiency and the safety of offshore operation can be improved;

(2) through the difference of the closing states of the relay contacts, the mutual cooperation between the first power pump and the second power pump is realized, and the efficiency of offshore operation is improved;

(3) the liquid level sensing device is connected with the liquid level sensing device arranged on the first power pump, and the closed contact of the first relay is switched according to the liquid level in the first power pump in a local control mode, so that the switching of the working state between the first power pump and the second power pump is controlled according to the liquid level in the first power pump in the local control mode;

(4) a plurality of aerial plug assemblies are provided for controlling the access and output of an electric signal and a communication signal of the box, the switching of two control modes of CAN communication control and local control is realized by transmitting the signal through the aerial plug assemblies, and the switching of the working states of the first power pump and the second power pump is realized, so that the safety of offshore operation is improved;

(5) the overload condition and the overheat condition of the circuit are reflected through the overload relay and the overheat relay, the buzzer which gives an alarm when the circuit is overloaded and overheated is used for giving an alarm, the working conditions of the overload relay and the overheat relay are fed back to the upper computer through the fourth aviation plug component in real time, and the safety of offshore operation is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a direct current circuit structure diagram of a pump set switching control box according to the present invention;

fig. 2 is a structure diagram of an ac circuit of a pump set switching control box according to the present invention.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known components, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, devices, states, and/or components, but do not preclude the presence or addition of one or more other features, integers, devices, states, components, and/or groups thereof.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically depicted, or only one of them is labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Example 1

In an embodiment of the present invention, as shown in fig. 1 and 2, the present invention provides a pump set switching control box, which is electrically connected to a first power pump M1 and a second power pump M2, and is in communication connection with an upper computer, and includes a dc input terminal, an ac input terminal, a first contactor 1KM, a second contactor 2KM, a first relay 5KA, a CAN communication module, and a transfer relay 2 KA.

The first contactor 1KM is connected with the dc input end, and is connected with the ac input end after being connected with the first power pump M1 in series.

Specifically, when the main contact of the first contactor 1KM in the direct current circuit is controlled by an electric signal or a communication signal to be pulled in and conducted, the first power pump M1, the first contactor 1KM and the alternating current input end in the alternating current circuit form a closed loop to be conducted, and the first power pump M1 operates under the action of alternating current.

The second contactor 2KM is connected with the first contactor 1KM in parallel and then connected with the direct current input end, and is connected with the second power pump M2 in series and then connected with the alternating current input end.

Specifically, when the main contact of the second contactor 2KM in the direct current circuit is controlled by an electric signal or a communication signal to be pulled in and conducted, the second power pump M2, the second contactor 2KM and the alternating current input end in the alternating current circuit form a closed loop to be conducted, and the second power pump M2 operates under the action of alternating current.

The first relay 5KA is connected with the direct current input end, a first contact of the first relay 5KA is connected with a main contact of the first contactor 1KM, and a second contact of the first relay 5KA is connected with a main contact of the second contactor 2 KM.

Specifically, the first relay 5KA is controlled by an electric signal in the direct current loop, when a first contact of the first relay 5KA is closed, the main contact of the first contactor 1KM is attracted and conducted, and when a second contact of the first relay 5KA is closed, the main contact of the second contactor 2KM is attracted and conducted.

CAN communication module and alternating current input end electric connection, CAN communication module's signal input end and host computer communication connection, CAN communication module's signal output part respectively with first contactor 1KM and second contactor 2KM communication connection.

Specifically, the CAN communication module sends a control signal to the first contactor 1KM and the second contactor 2KM according to a communication signal of the upper computer, and controls the main contact of the first contactor 1KM or the second contactor 2KM to be attracted and conducted.

The first contact of the transfer relay 2KA is connected between the first relay 5KA and the dc input terminal.

Specifically, when the first contact of the transfer relay 2KA is closed, the first relay 5KA is communicated with the direct-current input end, the CAN communication module is disconnected with the alternating-current input end, when the first contact of the transfer relay 2KA is disconnected, the first relay 5KA is disconnected with the direct-current input end, and the CAN communication module is communicated with the alternating-current input end.

The pump unit switching control box provided by this embodiment selects two control modes between the CAN communication control and the local control through the switching relay, attracts a contact of the first contactor or the second contactor through transmission of a communication signal in the CAN communication control mode, attracts a contact of the first contactor or the second contactor through transmission of an electric signal in the local control mode, and communicates an alternating current power supply and the first power pump M1 or the second power pump M2 through the attracted contact of the first contactor or the second contactor, so that two working states of remote communication control and local control of the pump unit CAN be automatically switched according to different conditions, mutual cooperation between the first power pump M1 and the second power pump M2 CAN be realized, and the efficiency and safety of offshore operation CAN be improved.

Example 2

Based on embodiment 1, as shown in fig. 1, the present invention provides a pump set switching control box:

the first relay 5KA is electrically connected with a liquid level sensing device arranged on the first power pump M1.

Illustratively, the fluid level sensing device includes a float disposed on the fluid level of the first power pump M1, a first contact pad and a second contact pad disposed within the first power pump M1.

Under pump package switching control case is in local control mode, when liquid level induction system detected that the liquid level of first power pump M1 is higher than or equal to predetermineeing the liquid level, the floater touches first contact piece, make first relay 5 KA's first contact closed and be connected with first contactor 1KM, first relay 5KA is in first state, first contactor 1KM and direct current input end intercommunication, it is closed to adsorb first contactor 1KM contact, first power pump M1 is connected with alternating current input end through the closed first contactor 1KM of contact.

When liquid level induction system detected that first power pump M1's liquid level is less than preset liquid level, the second contact of first relay 5KA is closed and is connected with second contactor 2KM, and first relay 5KA is in the second state, and second contactor 2KM and direct current input end intercommunication adsorb second contactor 2KM contact closure, and second power pump M2 is connected with alternating current input end through the closed second contactor 2KM of contact.

The pump group switching control box further includes a first push button switch 1SB and a second push button switch 2 SB.

Wherein the first push-button switch 1SB is connected between the direct current input terminal and the first relay 5KA, and is connected in parallel with the changeover relay 2 KA.

The second push switch 2SB is connected between the dc input terminal and the first relay 5KA, and is connected in parallel to the changeover relay 2 KA.

The pump package switching control case that this embodiment provided is connected with the liquid level induction system who sets up in first power pump, under local control mode, switch over the closed contact of first relay according to liquid level in the first power pump, realize under the local control mode, operating condition's switching between first power pump and the second power pump according to liquid level control in the first power pump, because closed first relay contact is different under every state, the contactor of even income circuit is also different, under first state, first contactor even gets into the circuit and makes first power pump and exchange the end and be connected, under the second state, second contactor even gets into the circuit and makes second power pump and exchange the end and be connected. According to the invention, the mutual cooperation between the first power pump and the second power pump is realized through the difference of the closing states of the relay contacts, so that the efficiency of offshore operation is improved; and the two button switches are used for respectively controlling the opening and closing of the CAN communication control mode and the local control mode, the two switches are independently controlled to increase the safety of circuit control, the opening and closing states of the CAN communication control mode and the local control mode are fed back to the upper computer through the fourth aviation plug assembly, the opening and closing states of the CAN communication control mode and the local control mode are visually displayed, and the safety of offshore operation is improved.

Example 3

Based on embodiment 1, as shown in fig. 1 and fig. 2, the pump set switching control box provided by the invention further includes an overload relay 3KA, an overheating relay 4KA, a pulse relay AX1, a temperature relay K1, a second relay 1KA, an input breaker 1QF, a phase-loss detector K2, a first indicator lamp 4HL, a second indicator lamp 5HL, a third indicator lamp 3HL, a fourth indicator lamp 7HL, a fifth indicator lamp 1HL, a sixth indicator lamp 2HL, a seventh indicator lamp 8HL, an eighth indicator lamp 6HL, a buzzer BZ, a first air-inserted component, a second air-inserted component, a third air-inserted component, a fourth air-inserted component and a fifth air-inserted component.

Wherein the overload relay 3KA is connected between the direct current input terminal and the first relay 5 KA.

The overheating relay 4KA and the overload relay 3KA are connected in series and connected between the direct current input end and the first relay 5 KA.

Specifically, the pulse relay AX1 is connected in series with the overload relay 3KA between the dc input terminal and the overload relay 3 KA. The first indicator lamp 4HL is connected with the overload relay 3KA in parallel and is connected between the direct current input end and the first relay 5 KA. The pulse relay AX1 controls the on/off of the overload relay 3KA after detecting an overload condition in the circuit. And when the circuit is overloaded, the circuit between the first indicator lamp 4HL and the direct current input end is conducted, so that the first indicator lamp 4HL emits light.

And after the second contact of the overload relay 3KA and the second contact of the overheating relay 4KA are connected in parallel, the second contact and the buzzer BZ are connected in series to the direct-current input end.

Specifically, temperature relay K1 is connected in series with overheat relay 4KA between direct current input and overheat relay 4KA, and second indicator lamp 5HL is connected in parallel with overheat relay 4KA between direct current input and first relay 5 KA. The temperature relay K1 controls the on/off of the overheating relay 4KA when detecting an overheating condition in the circuit. And when the circuit is overheated, the circuit between the second indicator lamp 5HL and the direct current input end is conducted, so that the second indicator lamp 5HL emits light.

The second contact of the transfer relay 2KA is connected between the third indicator lamp 3HL and the dc input terminal.

The third contact of the transfer relay 2KA is connected between the fourth indicator light 7HL and the dc input terminal.

Specifically, the third indicator light 3HL is an indicator light in a local control state, and the fourth indicator light 7HL is an indicator light in a CAN remote control state.

The first contact of the second relay 1KA is connected between the dc input terminal and the first contactor 1 KM.

Specifically, the second relay 1KA is an intermediate relay, and is configured to output a state feedback signal of the first feedback device 1KM and the first power pump M1 in a circuit.

The fifth indicator light 1HL is connected between the direct current input terminal and the first relay 5 KA.

The sixth indicator light 2HL is connected in parallel with the first contactor 1KM and is connected between the first contact of the first relay 5KA and the dc input terminal.

The seventh indicator light 8HL is connected in series with the second contactor 2KM, and is connected between the second contact of the first relay 5KA and the dc input terminal.

Specifically, the working state of the fifth indicator light 1HL represents the power supply condition in the pump set switching control box, the working state of the sixth indicator light 2HL represents the connection condition of the first contactor 1KM, and the working state of the seventh indicator light 8HL represents the connection condition of the second contactor 2 KM.

Optionally, the eighth indicator light 6HL is connected in series with the open-phase detector K2 and then connected to both ends of the ac input terminal.

Optionally, an input breaker 1QF is connected between the ac input terminal and the first contactor 1KM and between the ac input terminal and the second contactor 2 KM.

The first aviation plug assembly is connected with the alternating current input end and used for accessing alternating current.

Specifically, the pump unit switching control box accesses 380V alternating current from an alternating current supply end through the first aerial plug assembly.

The second aviation plug assembly is connected with the first power pump M1 and used for outputting alternating current to the first power pump M1.

Specifically, the pump unit switching control box sends 380V alternating current to the first power pump M1 through the second aviation plug assembly.

The third aviation plug assembly is connected with the second power pump M2 and used for outputting alternating current to the second power pump M2.

Specifically, the pump unit switching control box sends 380V alternating current to the second power pump M2 through the third aviation plug assembly.

The fourth navigation plug assembly is connected with the upper computer and used for outputting feedback signals.

Specifically, first button switch 1SB and second button switch 2SB all insert the subassembly with the fourth and are connected, insert the subassembly through the fourth and insert the corresponding state feedback signal of host computer input when first button switch 1SB and second button switch 2SB are closed and the disconnection.

And after the third contact of the overload relay 3KA and the third contact of the overheating relay 4KA are connected in parallel, the third contact is connected with the fourth aerial plug component, and the closing state of the overload relay 3KA and the closing state of the overheating relay 4KA are input to the upper computer through the fourth aerial plug component.

And a fourth contact of the conversion relay 2KA is connected with the fourth aviation plug assembly, and a feedback signal for switching the local state and the CAN remote control state is input to the upper computer through the fourth aviation plug assembly.

And a second contact of the second relay 1KA is connected with the fourth aerial plug component, and a third contact of the second relay 1KA is connected with the fourth aerial plug component. And a state feedback signal of the first feedback device 1KM and the first power pump M1 is input into the upper computer through the fourth navigation plug assembly.

And the fifth aerial plug assembly is connected between the CAN communication module and the first contactor 1KM and the second contactor 2 KM.

The pump set switching control box provided by the embodiment provides a plurality of aerial plug assemblies for controlling the box to access and output electric signals and communication signals, the aerial plug assemblies transmit signals to realize the switching of two control modes of CAN communication control and local control, the working states of a first power pump and a second power pump are switched, the CAN communication control and the local control mode are respectively controlled to be switched on and off through two button switches, the two switches are independently controlled to increase the safety of circuit control, the switching states of the CAN communication control and the local control mode are fed back to an upper computer through a fourth aerial plug assembly, the switching states of the CAN communication control and the local control mode are visually displayed, the overload condition and the overheating condition of a circuit are reacted through an overload relay and an overheating relay, an alarm is given when the circuit is overloaded and overheated through a buzzer for comprehensively alarming, and the working conditions of the overload relay and the overheating relay are fed back to the upper computer in real time through the fourth aerial plug assembly to improve the offshore working conditions The safety of the industry. Simultaneously, the opening and closing of the overload relay and the overheating relay are controlled through the pulse relay and the temperature relay, and the indicating lamps are respectively arranged on the circuits of the pulse relay and the temperature relay, so that the fault reason can be accurately identified according to the conditions of the indicating lamps, and the maintenance efficiency when the fault problem occurs in the marine operation process is improved.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in detail in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various example control methods described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed pump set switching control box may be implemented in other manners. For example, the above-described pump group switching control box embodiment is merely illustrative, for example, the modules or components are divided into only one logical function, and other division manners may be realized in practice, for example, a plurality of components or modules may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the communication links shown or discussed may be through interfaces, devices or units, or integrated circuits, and may be electrical, mechanical or other forms.

In addition, functional components in the embodiments of the present application may be integrated into one processing component, or each component may exist alone physically, or two or more components may be integrated into one component. The integrated components may be implemented in hardware or in electrical functional elements.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.