A pump group start-stop device and a control method for the pump group start-stop device

Abstract

The present invention provides a pump group start-stop device and a control method for the pump group start-stop device. The pump group start-stop device is used to start and stop the pump group. The pump group start-stop device includes: an adapter component, which is electrically connected to the pump group; a starter, which is electrically connected to the adapter component, and the starter controls the start and stop of the pump group through the adapter component; a frequency conversion control cabinet, which is electrically connected to the adapter component, and the frequency conversion control cabinet controls the start and stop of the pump group through the adapter component; a mode switcher, which is electrically connected to the adapter component and is used to control the adapter component to switch modes, wherein when the adapter component is switched to a first mode, the starter can control the start and stop of the pump group through the adapter component, and when the adapter component is switched to a second mode, the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component. The pump group start-stop device proposed by the present invention realizes that the pump group can be controlled not only at a long distance, but also at a short distance in an explosion-proof area.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic control, and in particular relates to a pump group start-stop device and a control method for the pump group start-stop device. Background Art

[0002] Technical issues to be solved: In related technologies, in different working conditions, the user's standing position is different, and the control and operation position of the pump group is also different. In emergency start-stop or test conditions, personnel are required to operate the device nearby in the explosion-proof area to control the start and stop of the pump group so as to keep an eye on the operation of the pump group. When frequency conversion is used to adjust the speed of the pump group or remote monitoring is performed, personnel are required to control the pump group and monitor the operating conditions of the pump group through a remote device in a safe area. Therefore, it is necessary to further optimize the pump group control method based on different use conditions of the pump group in the explosion-proof area, based on improving the safety and practicality of the use of the pump group in the explosion-proof area. Summary of the invention

[0003] An embodiment of the present invention provides a pump group start and stop device, which is used to control the start and stop of the pump group, and the pump group start and stop device includes: an adapter component, which is electrically connected to the pump group; a starter, which is electrically connected to the adapter component, and the starter controls the start and stop of the pump group through the adapter component; a frequency conversion control cabinet, which is electrically connected to the adapter component, and the frequency conversion control cabinet controls the start and stop of the pump group through the adapter component; a mode switcher, which is electrically connected to the adapter component and is used to control the adapter component to switch the mode, wherein when the adapter component is switched to the first mode, the starter can control the start and stop of the pump group through the adapter component, and when the adapter component is switched to the second mode, the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component.

[0004] The beneficial effects brought by the present invention are as follows:

[0005] It can be seen from the above scheme that an embodiment of the present invention provides a pump group start-stop device for controlling the start-stop of the pump group, and the pump group start-stop device includes an adapter component, a starter, a frequency conversion control cabinet and a mode switch, wherein the adapter component is electrically connected to the pump group, and the adapter component can transmit electric energy to the pump group to make the pump group work. The starter is electrically connected to the adapter component, and the starter can transmit electric energy to the pump group through the adapter component to control the start-stop of the pump group. The frequency conversion control cabinet is electrically connected to the adapter component, and the frequency conversion control cabinet can also transmit electric energy to the pump group through the adapter component to control the start-stop of the pump group.

[0006] Specifically, due to the difference in their properties, the starter is also installed in the explosion-proof area where the pump group is set, that is, it is set in an area close to the pump group to achieve close control of the start and stop of the pump group. The frequency conversion control cabinet is set in the centralized control area, that is, it is set in an area far away from the pump group to achieve long-distance control of the start and stop of the pump group.

[0007] The mode switcher is electrically connected to the adapter assembly, and is used to control the adapter assembly to switch modes. When the adapter assembly is switched to the first mode, the starter can control the start and stop of the pump group through the adapter assembly, thereby achieving close control of the start and stop of the pump group. The operator can operate the starter in the pump group start and stop device nearby in the explosion-proof area to control the start and stop of the pump group, so as to keep an eye on the operation of the pump group at all times.

[0008] When the adapter component is switched to the second mode, the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component. The operator can remotely monitor the operating status of the pump group in real time by operating the frequency conversion control cabinet in the pump group start and stop device, and control the pump group, which is highly safe and more comprehensive.

[0009] In summary, the pump group start and stop device proposed in the present invention switches the mode of the adapter component through a mode switch, and then can control the start and stop of the pump group through the starter and the frequency conversion control cabinet respectively, thereby realizing both remote control of the pump group and close control of the pump group in an explosion-proof area. Faced with different operating conditions, the pump group start and stop device in the present invention can realize reliable and comprehensive start and stop control of the pump group, thereby improving the safety and stability of the operation.

[0010] In the above technical solution, optionally, the adapter component includes: a power supply; a first switch, including a first interface and a second interface, the first interface is connected to the power supply, and the second interface can be connected to the first interface; a second switch, including a third interface and a fourth interface, the third interface is connected to the second interface, and the fourth interface can be connected to the third interface; a third switch, including a fifth interface and a sixth interface, the fifth interface is connected to the second interface, and the sixth interface can be connected to the fifth interface; a first relay, respectively connected to the fourth interface, the starter and the frequency converter control cabinet; a second relay, respectively connected to the sixth interface, the starter and the frequency converter control cabinet.

[0011] In some technical schemes, optionally, when the adapter assembly operates in the first mode, the first interface is connected to the second interface, the fourth interface is connected to the third interface, and the fifth interface is disconnected from the sixth interface; the first relay sends a random contact closure signal to the starter so that the starter can control the start and stop of the pump group.

[0012] In some technical solutions, optionally, when the switching assembly operates in the first mode, the first relay sends a passive contact disconnection signal to the frequency conversion control cabinet to shut down the frequency conversion control cabinet.

[0013] In some technical schemes, optionally, the starter includes: a first body, connected to the adapter assembly; a control circuit, arranged on the first body, the control circuit including a first non-contact and a second non-contact; a first control board, connected to the adapter assembly and the control circuit, for receiving a non-contact closing signal, and controlling the closure of the first non-contact and the second non-contact according to the non-contact closing signal, so that the control circuit is turned on and the first body works to control the start and stop of the pump group.

[0014] In some technical solutions, optionally, when the adapter assembly operates in the second mode, the first interface is connected to the second interface, the fourth interface is disconnected from the third interface, and the fifth interface is connected to the sixth interface; the second relay sends a random contact closure signal to the frequency conversion control cabinet so that the frequency conversion control cabinet can control the start and stop of the pump group, and the second relay sends a random contact disconnection signal to the starter to shut down the starter.

[0015] In some technical schemes, optionally, the frequency conversion control cabinet includes: a second body, connected to the adapter assembly; an aviation plug, connected to the adapter assembly, for collecting the random contact closing signal and the random contact disconnecting signal; a second control board, arranged on the second body, the second control board can control the operation of the second body according to the random contact closing signal to control the start and stop of the pump group, and control the second body to close according to the random contact disconnecting signal.

[0016] According to the second aspect of the present invention, the present invention also proposes a control method for a pump group start and stop device, which is used to control the pump group start and stop device as in any of the above-mentioned technical solutions, and the control method includes: receiving a start mode instruction; according to the start mode instruction, switching the mode of the adapter component so that the starter or the frequency conversion control cabinet can start and stop the pump group through the adapter component.

[0017] The control method of the pump group start-stop device proposed in the second aspect of the present invention is used to control the pump group start-stop device in any of the above-mentioned technical solutions, and therefore has all the beneficial effects of the pump group start-stop device in any of the above-mentioned technical solutions.

[0018] The control method of the pump group start and stop device first receives the start mode instruction, and then switches the mode of the adapter component according to the start mode instruction, so that the starter can control the start and stop of the pump group through the adapter component, or the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component, so as to realize the start and stop of the pump group respectively controlled by the starter and the frequency conversion control cabinet, so that the pump group can be controlled remotely and at close range in the explosion-proof area, facing different operating conditions, and improving the safety and stability of the operation.

[0019] In some technical schemes, optionally, the start mode instruction includes a remote start instruction and a short-range start instruction. According to the start mode instruction, the mode of the adapter component is switched so that the starter or the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component, specifically including: based on the start mode instruction being a short-range start instruction, controlling the adapter component to switch to a first mode, and the starter controls the start and stop of the pump group through the adapter component; based on the start mode instruction being a remote start instruction, controlling the adapter component to switch to a second mode, and the frequency conversion control cabinet controls the start and stop of the pump group through the adapter component.

[0020] In some technical schemes, optionally, controlling the adapter component to switch to the first mode includes: controlling the first interface and the second interface of the first switch of the adapter component to be connected, the fourth interface and the third interface of the second switch of the adapter component to be connected, the fifth interface and the sixth interface of the third switch of the adapter component to be disconnected, and the first relay of the adapter component to send a non-contact closure signal to the starter; controlling the adapter component to switch to the second mode includes: controlling the first interface and the second interface of the first switch of the adapter component to be connected, the fourth interface and the third interface of the second switch of the adapter component to be disconnected, the fifth interface and the sixth interface of the third switch of the adapter component to be connected, and the second relay of the adapter component to send a non-contact closure signal to the frequency conversion control cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic block diagram showing the structure of a pump group start-stop device according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram showing the structure of a starter in a pump group start-stop device according to an embodiment of the present invention;

[0023] Figure 3 One of the structural schematic diagrams showing a frequency conversion control cabinet in a pump group start-stop device according to an embodiment of the present invention;

[0024] Figure 4 A second structural schematic diagram showing a frequency conversion control cabinet in a pump group start-stop device according to an embodiment of the present invention;

[0025] Figure 5 A third structural schematic diagram showing a frequency conversion control cabinet in a pump group start-stop device according to an embodiment of the present invention;

[0026] Figure 6 A working principle diagram of a pump group start-stop device according to an embodiment of the present invention;

[0027] Figure 7 A schematic flow chart showing a method for controlling a pump group start-stop device according to an embodiment of the present invention.

[0028] in, Figures 1 to 6In the figure, the corresponding relationship between the reference numerals and the component names is as follows:

[0029] 100 pump group start and stop device, 102 adapter assembly, 104 power supply, 106 first switch, 108 first interface, 110 second interface, 112 second switch, 114 third interface, 118 fourth interface, 120 third switch, 122 fifth interface, 124 sixth interface, 126 first relay, 128 second relay, 130 starter, 132 first body, 134 control circuit, 136 first non-radial contact, 138 second non-radial contact, 140 frequency conversion control cabinet, 142 second body, 144 aviation plug, 146 second control board, 200 pump group. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Refer to the following Figures 1 to 7 The pump group start-stop device 100 and the control method of the pump group start-stop device in some embodiments of the present invention are described.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the present invention, a pump group start-stop device 100 is proposed, and the pump group start-stop device 100 is used to start and stop the pump group 200. The pump group start-stop device 100 includes: an adapter component 102, which is electrically connected to the pump group 200; a starter 130, which is electrically connected to the adapter component 102, and the starter 130 starts and stops the pump group 200 through the adapter component 102; a frequency conversion control cabinet 140, which is electrically connected to the adapter component 102, and the frequency conversion control cabinet 1 40 controls the start and stop of the pump group 200 through the adapter component 102; a mode switcher is electrically connected to the adapter component 102, and is used to control the mode switching of the adapter component 102, wherein when the adapter component 102 is switched to the first mode, the starter 130 can control the start and stop of the pump group 200 through the adapter component 102, and when the adapter component 102 is switched to the second mode, the frequency conversion control cabinet 140 can control the start and stop of the pump group 200 through the adapter component 102.

[0033] In this embodiment, the present invention proposes a pump group start-stop device 100, which is used to start and stop the pump group 200, and the pump group start-stop device 100 includes an adapter component 102, a starter 130, a frequency conversion control cabinet 140 and a mode switch, wherein the adapter component 102 is electrically connected to the pump group 200, and the adapter component 102 can transmit electric energy to the pump group 200 to make the pump group 200 work. The starter 130 is electrically connected to the adapter component 102, and the starter 130 can transmit electric energy to the pump group 200 through the adapter component 102 to control the start and stop of the pump group 200. The frequency conversion control cabinet 140 is electrically connected to the adapter component 102, and the frequency conversion control cabinet 140 can also transmit electric energy to the pump group 200 through the adapter component 102 to control the start and stop of the pump group 200.

[0034] Specifically, due to the difference in their own properties, the starter 130 and the frequency conversion control cabinet 140 are installed together with the pump group 200 in the explosion-proof area where the pump group 200 is set, that is, in an area close to the pump group 200, so that the start and stop of the pump group 200 can be controlled at a close distance through the starter 130. The frequency conversion control cabinet 140 is set in the centralized control area, that is, in an area far away from the pump group 200, to achieve remote control of the start and stop of the pump group 200.

[0035] The mode switcher is electrically connected to the adapter component 102, and is used to control the mode switching of the adapter component 102. When the adapter component 102 is switched to the first mode, the starter 130 can control the start and stop of the pump group 200 through the adapter component 102, thereby realizing close control of the start and stop of the pump group 200. The operator can operate the starter 130 in the pump group start and stop device 100 in the explosion-proof area to control the start and stop of the pump group 200, so as to keep an eye on the operation of the pump group 200 at all times.

[0036] When the adapter component 102 is switched to the second mode, the frequency conversion control cabinet 140 can control the start and stop of the pump group 200 through the adapter component 102. The operator can remotely monitor the operating status of the pump group 200 in real time by operating the frequency conversion control cabinet 140 in the pump group start and stop device 100 in the centralized control area, and control the pump group 200, which is highly safe and more comprehensive.

[0037] In summary, the pump group start and stop device 100 proposed in the present invention switches the mode of the adapter component 102 through the mode switch, and then can control the start and stop of the pump group 200 respectively through the starter 130 and the frequency conversion control cabinet 140, thereby realizing that the pump group 200 can be controlled remotely and at close range in the explosion-proof area. In the face of different operating conditions, the pump group start and stop device 100 in the present invention can realize reliable and comprehensive start and stop control of the pump group 200, thereby improving the safety and stability of the operation.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, the adapter component 102 includes: a power supply 104; a first switch 106, including a first interface 108 and a second interface 110, the first interface 108 is connected to the power supply 104, and the second interface 110 can be connected to the first interface 108; a second switch 112, including a third interface 114 and a fourth interface 118, the third interface 114 is connected to the second interface 110, and the fourth interface 118 can be connected to the third interface 114; a third switch 120, including a fifth interface 122 and a sixth interface 124, the fifth interface 122 is connected to the second interface 110, and the sixth interface 124 can be connected to the fifth interface 122; a first relay 126, respectively connected to the fourth interface 118, the starter 130 and the frequency converter control cabinet 140; a second relay 128, respectively connected to the sixth interface 124, the starter 130 and the frequency converter control cabinet.

[0039] In this embodiment, the adapter component 102 includes a power source 104 , a first switch 106 , a second switch 112 , a third switch 120 , a first relay 126 , and a second relay 128 .

[0040] The power source 104 provides the power required for the operation of the entire adapter assembly 102. Specifically, on one hand, the power source 104 of the adapter assembly 102 can be a battery. On the other hand, the power source 104 can also be a connector, and the adapter assembly 102 can be plugged into an external power supply component through the connector to obtain power for operation.

[0041] The first switch 106 includes a first interface 108 and a second interface 110, wherein the first interface 108 is connected to the power supply 104, and the power supply 104 can transmit electric energy to the first switch 106 through the first interface 108, and the second interface 110 of the first switch 106 can be connected to the first interface 108 to control the transmission process of electric energy.

[0042] Specifically, the mode switch is connected to the first switch 106 , and the mode switch can control the on / off of the second interface 110 and the first interface 108 of the first switch 106 .

[0043] The second switch 112 includes a third interface 114 and a fourth interface 118, the third interface 114 is connected to the second interface 110, and the fourth interface 118 can be communicated with the third interface 114. The third switch 120 includes a fifth interface 122 and a sixth interface 124, the fifth interface 122 is connected to the second interface 110, and the sixth interface 124 can be communicated with the fifth interface 122. The first relay 126 is respectively connected to the fourth interface 118, the starter 130 and the frequency conversion control cabinet 140; the second relay 128 is respectively connected to the sixth interface 124, the starter 130 and the frequency conversion control cabinet.

[0044] The first switch 106 is the overall start switch of the adapter assembly 102, which is used to control whether the adapter assembly 102 is powered on. The second switch 112 and the third switch 120 are used to control the on and off of the power supply 104 and the first relay 126 and the second relay 128, thereby realizing the control of the starter 130 and the frequency conversion control cabinet 140.

[0045] Specifically, the mode switch is connected to the second switch 112 to control the connection between the fourth interface 118 and the third interface 114 of the second switch 112. The mode switch is connected to the third switch 120 to control the connection between the sixth interface 124 and the fifth interface 122 of the third switch 120.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, when the adapter component 102 operates in the first mode, the first interface 108 is connected to the second interface 110, the fourth interface 118 is connected to the third interface 114, and the fifth interface 122 is disconnected from the sixth interface 124; the first relay 126 sends a random contact closure signal to the starter 130, so that the starter 130 can control the start and stop of the pump group 200.

[0047] In this embodiment, the specific situation in which the first adapter component 102 operates in the first mode is limited, wherein, when the adapter component 102 operates in the first mode, the first interface 108 is connected to the second interface 110, the fourth interface 118 is connected to the third interface 114, the fifth interface 122 is disconnected from the sixth interface 124, and then the first relay 126 forms a connecting loop with the power supply 104, and the first relay 126 sends a non-radial contact closure signal to the starter 130, so that the starter 130 can control the start and stop of the pump group 200.

[0048] The present invention realizes that the pump group start and stop device 100 can control the opening of the starter 130 through the specific setting of the adapter component 102 to operate in the first mode, so that the operator can control the start and stop of the pump group 200 through the starter 130, and control the pump group 200 at a position close to the pump group 200, thereby improving the timeliness of the operation.

[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, when the adapter assembly 102 operates in the first mode, the first relay 126 sends a non-radial contact disconnection signal to the variable frequency control cabinet 140 to shut down the variable frequency control cabinet 140 .

[0050] In this embodiment, when the adapter component 102 operates in the first operating mode, the adapter component 102 can control the frequency conversion control cabinet 140 in addition to the starter 130. The first relay 126 sends a random contact closure signal to the frequency conversion control cabinet 140 to close the frequency conversion control cabinet 140, so that the start and stop of the pump group 200 can be controlled by the starter 130 while the frequency conversion control cabinet 140 is in a locked state and cannot control the start and stop of the pump group 200.

[0051] During the operation of the adapter component 102 in the first mode, in addition to being able to send a random contact closing signal to the starter 130, the present invention also provides for sending a random contact disconnecting signal to the frequency conversion control cabinet 140, thereby forming a control interlock between the starter 130 and the frequency conversion control cabinet 140. When the starter 130 is working, the frequency conversion control cabinet 140 cannot control the start and stop of the pump group 200, thereby improving the safety of operation.

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments of the invention, optionally, the starter 130 includes: a first body 132, connected to the adapter assembly 102; a control circuit 134, arranged on the first body 132, the control circuit 134 includes a first non-contact 136 and a second non-contact 138; a first control board, connected to the adapter assembly 102 and the control circuit 134, for receiving a non-contact closing signal, and controlling the first non-contact 136 and the second non-contact 138 to close according to the non-contact closing signal, so that the control circuit 134 is turned on, and the first body 132 works to control the start and stop of the pump group 200.

[0053] In this embodiment, the present invention provides a specific structure of the starter 130, wherein the starter 130 includes a first body 132, a control circuit 134 and a first control board. The first body 132 is connected to the adapter assembly 102, and the first body 132 can transmit electrical energy to the adapter assembly 102 to enable the pump group 200 to work.

[0054] The control circuit 134 is arranged on the first body 132, and the control circuit 134 includes a first edgeless contact 136 and a second edgeless contact 138. When the first edgeless contact 136 and the second edgeless contact 138 are disconnected, the control circuit 134 is in an open circuit state, and when the first edgeless contact 136 and the second edgeless contact 138 are closed, the control circuit 134 is in a loop connected state.

[0055] The first control board is connected to the above-mentioned adapter component 102 and the control circuit 134. The first control board is used to receive the random contact closing signal, and control the first random contact 136 and the second random contact 138 to close according to the random contact closing signal, so that the control circuit 134 is turned on and the first body 132 works to control the start and stop of the pump group 200.

[0056] By setting the starter 130, the starter 130 can smoothly control the start and stop of the pump group 200 after the adapter component 102 sends a closing signal, and control the pump group 200 at a position close to the pump group 200, thereby improving the timeliness of the operation.

[0057] Specifically, the first control panel is also used to receive a non-contact disconnection signal, and control the disconnection between the first non-contact 136 and the second non-contact 138 according to the non-contact disconnection signal, so as to short-circuit the control circuit 134 and prohibit the first body 132 from working, thereby realizing the interlocking between the starter 130 and the frequency conversion control cabinet 140, and improving the safety of the operator when operating the start and stop of the pump group 200.

[0058] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, when the adapter component 102 operates in the second mode, the first interface 108 is connected to the second interface 110, the fourth interface 118 is disconnected from the third interface 114, and the fifth interface 122 is connected to the sixth interface 124; the second relay 128 sends a non-contact closing signal to the frequency conversion control cabinet 140 so that the frequency conversion control cabinet 140 can control the start and stop of the pump group 200, and the second relay 128 sends a non-contact opening signal to the starter 130 so that the starter 130 is turned off.

[0059] In this embodiment, for the case where the adapter component 102 operates in the second mode, the present invention is specifically configured such that when the adapter component 102 operates in the second mode, the first interface 108 of the first switch 106 is connected to the second interface 110, the fourth interface 118 of the second switch 112 is disconnected from the third interface 114, and the fifth interface 122 of the third switch 120 is connected to the sixth interface 124, thereby forming a loop in which the power supply 104 is connected to the second relay 128.

[0060] The second relay 128 sends a non-radial contact closure signal to the frequency conversion control cabinet 140, so that the frequency conversion control cabinet 140 can control the start and stop of the pump group 200. The present invention sets the specific process of the adapter component 102 running in the second mode, thereby realizing that the pump group start and stop device 100 can control the opening of the frequency conversion control cabinet 140, so that the operator can control the start and stop of the pump group 200 through the frequency conversion control cabinet 140, and control the pump group 200 at a location far away from the pump group 200, such as the centralized control area, to improve the safety of operation.

[0061] In addition, when the adapter assembly 102 operates in the second mode, the second relay 128 sends a non-contact disconnection signal to the starter 130 to shut down the starter 130. In the process of the adapter assembly 102 operating in the second mode, in addition to sending a non-contact closing signal to the frequency conversion control cabinet 140, the present invention also sends a non-contact disconnection signal to the starter 130, thereby forming a control interlock between the frequency conversion control cabinet 140 and the frequency conversion control cabinet 140. When the frequency conversion control cabinet 140 is working, the starter 130 cannot control the start and stop of the pump group 200, thereby improving the safety of operation.

[0062] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, the frequency conversion control cabinet 140 includes: a second body 142, connected to the adapter assembly 102; an aviation plug 144, connected to the adapter assembly 102, for collecting the non-contact closing signal and the non-contact disconnecting signal; a second control board 146, arranged on the second body 142, electrically connected to the aviation plug 144, the second control board 146 can control the operation of the second body 142 according to the non-contact closing signal to control the start and stop of the pump group 200, and control the second body 142 to close according to the non-contact disconnecting signal.

[0063] In this embodiment, with respect to the structure of the frequency conversion control cabinet 140, the present invention is specifically configured such that the frequency conversion control cabinet 140 includes a second body 142, an air plug 144, and a second control panel 146. The second body 142 is connected to the adapter assembly 102. The second body 142 can transmit electrical energy to the adapter assembly 102 to enable the pump group 200 to work.

[0064] The aviation plug 144 is connected to the adapter assembly 102 and is used to collect the random contact closing signal and the random contact opening signal.

[0065] The second control board 146 is disposed on the second body 142 and is electrically connected to the aviation plug 144. The second control board 146 can control the operation of the second body 142 according to the random contact closing signal to control the start and stop of the pump group 200, and control the closing of the second body 142 according to the random contact opening signal.

[0066] By setting the frequency conversion control cabinet 140, the frequency conversion control cabinet 140 can smoothly control the start and stop of the pump group 200 after the adapter component 102 sends the non-contact closing signal, and control the pump group 200 at a position far away from the pump group 200, thereby improving the timeliness of the operation. In addition, the frequency conversion control cabinet 140 can control the second body 142 to close according to the non-contact disconnection signal, so that the second body 142 is prohibited from working, thereby realizing the interlocking of the operation between the starter 130 of the frequency conversion control cabinet 140, and improving the safety of the operator when operating the start and stop of the pump group 200.

[0067] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in some embodiments, optionally, the first switch 106 includes a first contact and a second contact, the second switch 112 includes a third contact and a fourth contact, the third switch 120 includes a fifth contact and a sixth contact, the first relay 126 includes a first relay connector and a first transmission member, and the second relay 128 includes a second relay connector and a second transmission member.

[0068] Specifically, the starter 130 includes a magnetic starter.

[0069] During the operation of the pump group start-stop device 100, the magnetic starter and the frequency conversion control cabinet 140 are first powered on so that the magnetic starter and the frequency conversion control cabinet 140 can operate normally. When the local control mode is selected, the mode switch controls the adapter component 102 to switch to the first mode. The first switch 106 is turned on, the first contact and the second contact of the first switch 106 are closed, the first interface 108 and the second interface 110 of the first switch 106 are connected, and the second switch 112 and the third switch 120 are controlled. At this time, the third contact and the fourth contact of the second switch 112 are closed, so the third interface 114 and the fourth interface 118 are connected, and the fifth contact and the sixth contact of the third switch 120 are disconnected, so the fifth interface 122 and the sixth interface 124 are disconnected. Because the auxiliary contact of the first relay connector is normally closed, the first transmission member is energized, and the magnetic starter of the first transmission member outputs a non-contact closing signal, and outputs a non-contact disconnecting signal to the frequency conversion control cabinet 140 as a start-stop permission signal.

[0070] The first passive contact 136 and the second passive contact 138 of the magnetic starter are closed, and the control circuit 134 is turned on, so that the pump group 200 can be started and stopped by the first control board. The frequency conversion control cabinet 140 receives the passive contact disconnection signal, which is collected to the second control board 146 through the aviation plug 144, and the frequency conversion control cabinet 140 cannot operate the pump group 200.

[0071] When the remote control mode is selected, the mode switch controls the adapter component 102 to switch to the second mode. The first switch 106 is turned on, the first contact of the first switch 106 is closed, the first interface 108 and the second interface 110 of the first switch 106 are connected, and the second switch 112 and the third switch 120 are controlled. At this time, the third contact and the fourth contact of the second switch 112 are disconnected, so the third interface 114 and the fourth interface 118 are disconnected, and the fifth contact and the sixth contact of the third switch 120 are closed, so the fifth interface 122 and the sixth interface 124 are closed. Because the auxiliary contact of the second relay connector is normally closed, the second transmission member is energized, and the magnetic starter of the second transmission member outputs a non-contact disconnection signal, and outputs a non-contact closure signal to the frequency conversion control cabinet 140 as a start-stop permission signal.

[0072] The first passive contact 136 and the second passive contact 138 of the magnetic starter are disconnected, and the control circuit 134 is disconnected, so that the pump group 200 cannot be started and stopped by the first control board. The frequency conversion control cabinet 140 receives the passive contact closure signal, which is collected to the second control board 146 through the aviation plug 144, and the frequency conversion control cabinet 140 can operate the pump group 200 to start and stop.

[0073] Specifically, Figure 2As shown, the working principle of the magnetic starter is: turn on the circuit breaker ZQ to power on the equipment, the power indicator DD lights up, and operate the combination switch SA to select local control or remote control. Under normal working conditions, in the local control mode, press the motor start button QA, the main contact of the AC contactor KM closes, the motor of the pump group 200 is powered on, and the running indicator YD2 lights up. Press the stop button TA, the main contact of the AC contactor KM disconnects, the motor of the pump group 200 stops running, and the running indicator YD2 goes out; in the remote control mode, when the remote pump group start button is pressed, the main contact of the AC contactor KM closes, the motor of the pump group 200 is powered on, and when the remote pump group start button pops up, the main contact of the AC contactor KM disconnects, and the motor of the pump group 200 stops running. When the pump group 200 is overloaded, the contact of the thermal relay FH disconnects, the motor power supply is disconnected, and the overload indicator YD1 lights up. When the pump group 200 is missing a phase or loses pressure, the contact of the phase sequence protector F10 disconnects, and the motor power supply is disconnected.

[0074] Specifically, Figure 2 Among them, L1, L2 and L3 are the three-phase power supply contacts of the main circuit breaker. L21, L22 and L23 are the three contacts of the main circuit of the AC contactor KM. L11, L12 and L13 represent the lines. U represents the first phase of the three-phase power supply, V represents the second phase of the three-phase power supply, and W represents the third phase of the three-phase power supply.

[0075] Specifically, Figure 3 , Figure 4 and Figure 5 As shown, the frequency conversion control cabinet 140 is connected to the permission signal interface of the external control device. The frequency conversion control cabinet 140 can drive 3 pump groups, and the driving modes are divided into normal and emergency. The two permission signals can be closed at the same time. If the permission signal of the pump group 200 is closed, the corresponding pump group 200 can be controlled to start at a variable frequency. If the emergency permission signal of the pump group 200 is closed, the corresponding pump group 200 can be controlled to start at an industrial frequency.

[0076] Specifically, Figure 3 The CT-02.17-CT02.28, XIN2-1-XIN2-12, QZ24V and other labels indicate the internal wiring labels of the frequency conversion control cabinet 140. Figure 4 The labels XIN2-1 to XIN2-12 in the figure represent the internal wiring labels of the frequency conversion control cabinet 140.

[0077] Figure 4 Contacts 7, 8, 9, 10, 11 and 12 are connected Figure 3 The 3-way pump group allows normal signals. Figure 5 E55, E57 and E59 are connected Figure 3 The 3-way pump group allows emergency signaling.

[0078] In one embodiment of the present invention, Figure 7As shown, a control method for a pump group start-stop device is also proposed, which is used to control the pump group start-stop device in any of the above embodiments. The control method includes:

[0079] S602: receiving a startup mode instruction;

[0080] S604: According to the start mode instruction, the mode of the conversion component is switched so that the starter or the frequency conversion control cabinet can start and stop the pump group through the adapter component.

[0081] In this embodiment, the control method of the pump group start-stop device proposed in the present invention is used to control the pump group start-stop device in any of the above embodiments, and therefore has all the beneficial effects of the pump group start-stop device in any of the above embodiments.

[0082] The control method of the pump group start and stop device first receives the start mode instruction, and then switches the mode of the adapter component according to the start mode instruction, so that the starter can control the start and stop of the pump group through the adapter component, or the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component, so as to realize the start and stop of the pump group respectively controlled by the starter and the frequency conversion control cabinet, so that the pump group can be controlled remotely and at close range in the explosion-proof area, facing different operating conditions, and improving the safety and stability of the operation.

[0083] In some embodiments, optionally, the start mode instruction includes a remote start instruction and a short-range start instruction. According to the start mode instruction, the mode of the adapter component is switched so that the starter or the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component, specifically including: based on the start mode instruction being a short-range start instruction, controlling the adapter component to switch to a first mode, and the starter controls the start and stop of the pump group through the adapter component; based on the start mode instruction being a remote start instruction, controlling the adapter component to switch to a second mode, and the frequency conversion control cabinet controls the start and stop of the pump group through the adapter component.

[0084] In this embodiment, the start mode instruction specifically includes a remote start instruction and a short-range start instruction, wherein the remote start instruction refers to an instruction for the operator to operate the start and stop of the pump group through the frequency conversion control cabinet in the centralized control area, and the short-range start instruction refers to an instruction for the operator to operate the start and stop of the pump group through the starter in the explosion-proof area.

[0085] According to the start mode instruction, the mode of the adapter component is switched so that the starter or the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component, specifically including: based on the start mode instruction being a short-range start instruction, the adapter component is controlled to switch to the first mode, and the starter controls the start and stop of the pump group through the adapter component.

[0086] The present invention is based on the operator's need to start the pump group from a short distance, thereby switching the adapter component to the first mode, so that the starter can control the start and stop of the pump group through the adapter component, so that the operator can control the start and stop of the pump group at low cost and relatively easily.

[0087] In addition, according to the start mode instruction, the mode of the adapter component is switched so that the starter or the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component. Specifically, it also includes: based on the start mode instruction being a remote start instruction, the adapter component is controlled to switch to the second mode, so that the frequency conversion control cabinet controls the start and stop of the pump group through the adapter component.

[0088] The present invention is based on the need for an operator to remotely start the pump group, thereby switching the adapter component to the second mode, so that the frequency conversion control cabinet can control the start and stop of the pump group through the adapter component, which is safer.

[0089] In some embodiments, optionally, controlling the adapter component to switch to the first mode includes: controlling the first interface and the second interface of the first switch of the adapter component to be connected, the fourth interface and the third interface of the second switch of the adapter component to be connected, the fifth interface and the sixth interface of the third switch of the adapter component to be disconnected, and the first relay of the adapter component to send a random contact closure signal to the starter.

[0090] In this embodiment, when the adapter assembly operates in the first mode, the first interface is connected to the second interface, the fourth interface is connected to the third interface, and the fifth interface is disconnected from the sixth interface, so that the first relay forms a connecting loop with the power supply, and the first relay sends a random contact closure signal to the starter, so that the starter can control the start and stop of the pump group.

[0091] The present invention realizes that the pump group start and stop device can control the start of the starter through the specific setting of the adapter component to operate in the first mode, so that the operator can control the start and stop of the pump group through the starter, control the pump group at a position close to the pump group, and improve the timeliness of the operation.

[0092] Specifically, controlling the switching component to operate in the first mode also includes: the first relay sends a random contact disconnection signal to the frequency conversion control cabinet to close the frequency conversion control cabinet.

[0093] In some embodiments, optionally, controlling the adapter component to switch to the second mode includes: controlling the first interface and the second interface of the first switch of the adapter component to be connected, the fourth interface and the third interface of the second switch of the adapter component to be disconnected, the fifth interface and the sixth interface of the third switch of the adapter component to be connected, and the second relay of the adapter component to send a non-radial contact closure signal to the frequency conversion control cabinet.

[0094] In this embodiment, the control adapter component is switched to the second mode. The present invention is specifically configured so that the first interface and the second interface of the first switch are connected, the fourth interface of the second switch is disconnected from the third interface, and the fifth interface of the third switch is connected to the sixth interface, forming a loop in which the power supply is connected to the second relay.

[0095] The second relay sends a random contact closure signal to the frequency conversion control cabinet so that the frequency conversion control cabinet can control the start and stop of the pump group. The present invention sets the specific process of the adapter component running in the second mode, thereby realizing that the pump group start and stop device can control the opening of the frequency conversion control cabinet, so that the operator can control the start and stop of the pump group through the frequency conversion control cabinet, and control the pump group at a location far away from the pump group, such as the centralized control area, to improve the safety of operation.

[0096] In addition, controlling the switching component to operate in the second mode further includes: controlling the second relay to send a passive contact disconnection signal to the starter to shut down the starter.

[0097] During the operation of the adapter assembly in the second mode, in addition to being able to send a random contact closing signal to the frequency conversion control cabinet, the present invention also provides for sending a random contact disconnecting signal to the starter, thereby forming a control interlock between the frequency conversion control cabinets. When the frequency conversion control cabinet is working, the starter cannot control the start and stop of the pump group, thereby improving the safety of operation.

[0098] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pump group start-stop device (100), characterized in that: Used to start and stop a pump group (200), the pump group start and stop device (100) comprises: A switching assembly (102) electrically connected to the pump assembly (200); A starter (130) is electrically connected to the adapter component (102), and the starter (130) controls the start and stop of the pump group (200) through the adapter component (102); A frequency conversion control cabinet (140) is electrically connected to the adapter component (102), and the frequency conversion control cabinet (140) controls the start and stop of the pump group (200) through the adapter component (102); A mode switcher is electrically connected to the adapter component (102) and is used to control the adapter component (102) to switch modes, wherein when the adapter component (102) is switched to a first mode, the starter (130) can control the start and stop of the pump group (200) through the adapter component (102), and when the adapter component (102) is switched to a second mode, the frequency conversion control cabinet (140) can control the start and stop of the pump group (200) through the adapter component (102).

2. The pump group start-stop device (100) according to claim 1, characterized in that: The adapter component (102) comprises: Power supply (104); A first switch (106), comprising a first interface (108) and a second interface (110), wherein the first interface (108) is connected to the power source (104), and the second interface (110) can be connected to the first interface (108); A second switch (112), comprising a third interface (114) and a fourth interface (118), wherein the third interface (114) is connected to the second interface (110), and the fourth interface (118) can communicate with the third interface (114); a third switch (120), comprising a fifth interface (122) and a sixth interface (124), wherein the fifth interface (122) is connected to the second interface (110), and the sixth interface (124) can communicate with the fifth interface (122); A first relay (126) is connected to the fourth interface (118), the starter (130) and the frequency conversion control cabinet (140) respectively; The second relay (128) is respectively connected to the sixth interface (124), the starter (130) and the frequency conversion control cabinet (140).

3. The pump group start-stop device (100) according to claim 2, characterized in that: When the adapter component (102) operates in the first mode, the first interface (108) is connected to the second interface (110), the fourth interface (118) is connected to the third interface (114), and the fifth interface (122) is disconnected from the sixth interface (124); The first relay (126) sends a random contact closing signal to the starter (130), so that the starter (130) can control the start and stop of the pump group (200).

4. The pump group start-stop device (100) according to claim 3, characterized in that: When the switching component (102) operates in the first mode, the first relay (126) sends a non-contact disconnection signal to the frequency conversion control cabinet (140) to shut down the frequency conversion control cabinet (140).

5. The pump group start-stop device (100) according to claim 3, characterized in that: The initiator (130) comprises: A first body (132) connected to the adapter assembly (102); A control circuit (134) is arranged on the first body (132), and the control circuit (134) includes a first edgeless contact (136) and a second edgeless contact (138); A first control board is connected to the adapter assembly (102) and the control circuit (134), and is used to receive the non-contact closing signal, and control the first non-contact (136) and the second non-contact (138) to close according to the non-contact closing signal, so that the control circuit (134) is turned on, and the first body (132) works to control the start and stop of the pump group (200).

6. The pump group start-stop device (100) according to claim 2, characterized in that: When the adapter component (102) operates in the second mode, the first interface (108) is connected to the second interface (110), the fourth interface (118) is disconnected from the third interface (114), and the fifth interface (122) is connected to the sixth interface (124); The second relay (128) sends a non-contact closing signal to the frequency conversion control cabinet (140) so that the frequency conversion control cabinet (140) can control the start and stop of the pump group (200), and the second relay (128) sends a non-contact opening signal to the starter (130) so that the starter (130) is turned off.

7. The pump group start-stop device (100) according to claim 6, characterized in that: The frequency conversion control cabinet (140) comprises: A second body (142) connected to the adapter assembly (102); An aerial plug (144) connected to the adapter component (102) and used for collecting the random contact closing signal and the random contact opening signal; The second control board (146) is arranged on the second body (142). The second control board (146) can control the operation of the second body (142) according to the random contact closing signal to control the start and stop of the pump group (200), and control the closing of the second body (142) according to the random contact opening signal.

8. A control method for a pump group start-stop device, characterized in that: Used to control the pump group start-stop device according to any one of claims 1 to 7, the control method comprises: Receive a startup mode command; According to the start-up mode instruction, the mode of the adapter component is switched so that the starter or the frequency conversion control cabinet can start and stop the pump group through the adapter component.

9. The control method of the pump group start-stop device according to claim 8, characterized in that: The start mode instruction includes a remote start instruction and a short-range start instruction. According to the start mode instruction, the mode of the adapter component is switched so that the starter or the frequency conversion control cabinet can start and stop the pump group through the adapter component, specifically including: Based on the start mode instruction being a short-range start instruction, the adapter component is controlled to switch to the first mode, and the starter controls the start and stop of the pump group through the adapter component; Based on the fact that the start mode instruction is a remote start instruction, the adapter component is controlled to switch to the second mode, so that the frequency conversion control cabinet controls the start and stop of the pump group through the adapter component.

10. The control method of the pump group start-stop device according to claim 9, characterized in that: The controlling the switching component to switch to the first mode includes: Control the first interface and the second interface of the first switch of the adapter component to be connected, the fourth interface and the third interface of the second switch of the adapter component to be connected, the fifth interface and the sixth interface of the third switch of the adapter component to be disconnected, and the first relay of the adapter component to send a random contact closure signal to the starter; The controlling the switching component to switch to the second mode includes: The first interface and the second interface of the first switch of the adapter component are connected, the fourth interface and the third interface of the second switch of the adapter component are disconnected, the fifth interface and the sixth interface of the third switch of the adapter component are connected, and the second relay of the adapter component sends a random contact closure signal to the frequency conversion control cabinet.

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