CN216278511U - Liquid suction device - Google Patents
Liquid suction device Download PDFInfo
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- CN216278511U CN216278511U CN202120533056.9U CN202120533056U CN216278511U CN 216278511 U CN216278511 U CN 216278511U CN 202120533056 U CN202120533056 U CN 202120533056U CN 216278511 U CN216278511 U CN 216278511U
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Abstract
The disclosed embodiments provide a liquid suction device. The liquid suction device includes: a centrifugal pump; the electric valve is arranged on an outlet pipeline of the centrifugal pump and used for controlling the opening and closing of an outlet of the centrifugal pump and outputting a first state signal representing the opening state of the electric valve and a second state signal representing the closing state of the electric valve; the control panel is used for inputting a device starting signal and a device closing signal by a user; and the control system is respectively electrically connected with the centrifugal pump, the electric valve and the control panel and is used for controlling the centrifugal pump to be started when the device starting signal is received and the second state signal is received, and controlling the electric valve to be started after the centrifugal pump is started for a set time.
Description
Technical Field
The disclosure relates to the technical field of water supply and drainage, in particular to a liquid suction device.
Background
When the centrifugal pump is started, if the centrifugal pump is started in a state that the outlet valve is opened, the centrifugal pump cannot be started or even is damaged, and therefore a pump holding process needs to be carried out, namely, the centrifugal pump is started when the outlet valve is closed, and the outlet valve is opened after the centrifugal pump is started.
In the related art, outlet valves of centrifugal pumps are manual valves, and when the centrifugal pumps need to be opened, workers are required to adjust the manual valves to be closed firstly, and then the centrifugal pumps are opened; after the centrifugal pump is opened, the manual valve is adjusted to be in an opening state by a worker. In the process, the condition that the centrifugal pump is damaged due to misoperation of workers easily occurs, and the operation is complicated.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure aims to provide a liquid pumping device to reduce the damage of a centrifugal pump caused by misoperation of workers. The specific technical scheme is as follows:
according to an aspect of an embodiment of the present disclosure, there is provided a liquid suction device including:
a centrifugal pump;
the electric valve is arranged on an outlet pipeline of the centrifugal pump and used for controlling the opening and closing of an outlet of the centrifugal pump and outputting a first state signal representing the opening state of the electric valve and a second state signal representing the closing state of the electric valve;
the control panel is used for inputting a device starting signal and a device closing signal by a user;
and the control system is respectively electrically connected with the centrifugal pump, the electric valve and the control panel and is used for controlling the centrifugal pump to be opened when the device starting signal is received and the second state signal is received, and controlling the electric valve to be opened after the centrifugal pump is opened for a set time.
In some embodiments, the control system is further configured to control the centrifugal pump and the electric valve to close upon receipt of the device closing signal.
In some embodiments, the centrifugal pump is capable of feeding back a current signal to the control system in an on state, wherein the current signal carries a current value representing a working current of the centrifugal pump;
the control system, after the centrifugal pump is opened for a set period of time, controls the electric valve to open, and includes:
and after the control system receives the current signal and the current value is greater than the current threshold value and lasts for a set time, controlling the electric valve to be opened.
In some embodiments, the electrically operated valve comprises an electrically operated valve body and an actuator for sending the first or second status signal to the control system.
In some embodiments, the centrifugal pump is further configured to send a third status signal to the control system indicative of an on state of the centrifugal pump, or a fourth status signal indicative of an off state of the centrifugal pump;
the centrifugal pump comprises a centrifugal pump body, and a current sensor and an operation signal detector which are fixed on the centrifugal pump body, wherein the current sensor is used for detecting the current signal of the centrifugal pump body and sending the current signal to the control system; the operation signal detector is used for detecting the third state signal or the fourth state signal and sending the third state signal or the fourth state signal to the control system.
In some embodiments, the liquid-pumping device of embodiments of the present disclosure further comprises a manual valve located in the inlet line of the centrifugal pump.
In some embodiments, the liquid pumping device is used for pumping out liquid in a storage device, and the liquid pumping device further comprises a liquid level sensor arranged in the storage device, the liquid level sensor is used for detecting the liquid level height of the liquid and sending a liquid level height signal to a control system;
and the control system is used for controlling the centrifugal pump to be closed when the third state signal and the liquid level height signal are received and the liquid level height is lower than a height threshold value.
In some embodiments, the control panel is provided with an operation button, the operation button is used for a user to input the device start signal and the device stop signal, and the control system is further used for locking the operation button when the fourth state signal and the liquid level height signal are received and the liquid level height is lower than a height threshold value.
In some embodiments, a check valve is also connected between the centrifugal pump and the electric valve.
The embodiment of the disclosure has the following beneficial effects:
according to the liquid suction device provided by the embodiment of the disclosure, the electric valve for controlling the opening and closing of the outlet of the centrifugal pump is arranged on the outlet pipeline of the centrifugal pump, the control system controls the centrifugal pump to be opened when receiving the device starting signal and receiving the second state signal for representing the closing state of the electric valve, and controls the electric valve to be opened after the centrifugal pump is opened for a set time, so that the process of 'holding the pump back' in the opening process of the centrifugal pump is completed. Therefore, in the embodiment of the disclosure, the control system and the electric valve act together to complete the 'pump holding-down' process of the centrifugal pump in the opening process, so that the damage of the centrifugal pump caused by misoperation of workers can be reduced, and the centrifugal pump is better protected.
Of course, not all advantages described above need to be achieved at the same time to practice any one product or method of the present disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a liquid suction apparatus according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments derived from the present application by a person of ordinary skill in the art based on the embodiments in the present disclosure are within the scope of protection of the present disclosure.
In order to reduce the situation that the centrifugal pump 1 is damaged due to misoperation of workers, and therefore the centrifugal pump 1 is better protected, the embodiment of the disclosure provides a liquid suction device.
As shown in fig. 1, an embodiment of the present disclosure provides a liquid suction device, including:
a centrifugal pump 1.
The electric valve 2 is arranged on an outlet pipeline 12 of the centrifugal pump 1 and used for controlling the opening and closing of an outlet 11 of the centrifugal pump 1 and outputting a first state signal representing the opening state of the electric valve 2 or a second state signal representing the closing state of the electric valve 2.
And the control panel 3 is used for inputting a device starting signal and a device closing signal by a user.
And the control system 4 is electrically connected with the centrifugal pump 1, the electric valve 2 and the control panel 3 respectively and is used for controlling the centrifugal pump 1 to be opened when receiving the device starting signal and receiving the second state signal and controlling the electric valve 2 to be opened after the centrifugal pump 1 is opened for a set time.
In the disclosed embodiment, the centrifugal pump 1 may be connected to a storage facility 5 for storing liquid, naturally occurring sea, river, or lake through a pipe, and may be capable of pumping liquid to a set location.
When the electric valve 2 is powered on, the first state signal or the second state signal can be output to the control system 4 in real time, and the control system 4 can receive the first state signal or the second state signal. The first state signal may carry first information representing the opening state of the electric valve 2, the second state signal may carry second information representing the closing state of the electric valve 2, and the first information and the second information may be represented by 0 or 1, for example, the first information is 1, and the second information is 0; alternatively, the first information is 0 and the second information is 1.
The specific structural forms of the control system 4 and the electric valve 2 and the connection form between the pipeline and the electric valve 2 are not limited in the embodiments of the present disclosure. For example, the control system 4 may include a PLC (Programmable logic controller), a control circuit board, or a control cabinet. The Control System may be a Distributed Control System (DCS). When the diameter of the pipeline on the pipeline is less than or equal to 50mm, the electric valve 2 adopts a stop valve; when the diameter of the pipeline is larger than 50mm, the electric valve 2 adopts a gate valve or a butterfly valve. When the liquid pressure in the pipeline is higher, the pipeline and the electric valve 2 are connected in a welding mode; when the liquid pressure in the pipeline is lower, the pipeline is connected with the electric valve 2 through a flange.
When the liquid pumping device needs to be started, a worker can input a device starting signal on the control panel 3, and the control system 4 indicates that the electric valve 2 is in a closed state at the moment when receiving the device starting signal and receiving the second state signal, can control the centrifugal pump 1 to be started, specifically can send a first starting signal to the centrifugal pump 1, and starts the centrifugal pump 1 after receiving the first starting signal. In addition, when the control system 4 does not receive the second status signal, it indicates that the electric valve 2 is in the closed state, and the control system 4 does not control the centrifugal pump 1 to be opened.
After the centrifugal pump 1 is started for a set period of time, it indicates that the centrifugal pump 1 is started and enters a normal operation state, and in the normal operation state, as long as the electric valve 2 is started, the centrifugal pump 1 can continue to maintain the normal operation state and suck liquid. Thus, the control system 4 may control the electric valve 2 to open after the centrifugal pump 1 is opened for a set period of time, so that liquid pumped by the centrifugal pump 1 and flowing to its outlet 11 can flow through the electric valve 2 to a set position. While the control system 4 is not able to control the electric valve 2 to close when the centrifugal pump 1 is in normal operation, which would otherwise result in damage to the centrifugal pump 1.
According to the liquid suction device provided by the embodiment of the disclosure, the electric valve 2 for controlling the opening and closing of the outlet 11 of the centrifugal pump 1 is arranged on the outlet pipeline 12 of the centrifugal pump 1, the control system 4 controls the centrifugal pump 1 to be opened when receiving a device starting signal and receiving a second state signal for representing the closing state of the electric valve 2, and controls the electric valve 2 to be opened after the centrifugal pump 1 is opened for a set time, so that the process of 'holding the pump back' in the opening process of the centrifugal pump 1 is completed. Therefore, in the embodiment of the present disclosure, the control system 4 and the electric valve 2 act together to complete the "pump holding-out" process of the centrifugal pump 1 in the opening process, so that the damage of the centrifugal pump 1 due to the misoperation of the worker can be reduced, and the centrifugal pump 1 can be better protected.
In addition, in the whole process of starting the centrifugal pump 1, only a worker needs to input a device starting signal, and the 'pump holding-out' process of the centrifugal pump 1 in the starting process can be completed, so that the operation process of the liquid suction device disclosed by the embodiment of the disclosure is simpler, and the labor intensity of the worker can be reduced. But also to reduce the starting time of the centrifugal pump 1 and to improve the degree of automation.
In some embodiments of the present disclosure, the control system 4 is further configured to control the centrifugal pump 1 and the electric valve 2 to close upon receiving a device closing signal. When the liquid pumping device of the embodiment of the present disclosure finishes pumping the liquid, a worker may input a device closing signal on the control panel 3, the control system 4 can receive the device closing signal, and then the control system 4 may control the centrifugal pump 1 and the electric valve 2 to close. In this way, it is not necessary for a worker to manually close the centrifugal pump 1 and the electric valve 2, and therefore the degree of automation of the liquid suction device of the embodiment of the present disclosure can be further improved.
It should be noted that, in the process of controlling the centrifugal pump 1 and the electric valve 2 to close, the control system 4 may control the centrifugal pump 1 and the electric valve 2 to close simultaneously. Or, the centrifugal pump 1 may be controlled to be closed first, and the electric valve 2 may be controlled to be closed after the centrifugal pump 1 is closed, so that the situation that the centrifugal pump 1 is damaged because the centrifugal pump 1 continues to operate without being closed after the electric valve 2 is closed can be reduced.
In some embodiments of the present disclosure, the centrifugal pump 1 is capable of feeding back a current signal to the control system 4 in the on state, the current signal carrying a current value indicative of the operating current of the centrifugal pump 1.
The control system 4, after the centrifugal pump 1 is opened for a set period of time, controls the electric valve 2 to open, and comprises:
and after the control system 4 receives the current signal and the current value is greater than the current threshold value and lasts for a set time length, the electric valve 2 is controlled to be opened.
The current value carried in the current signal can represent the working current of the centrifugal pump 1, and when the current value is greater than the current threshold value and is continuously set for a long time, it indicates that the centrifugal pump 1 is in an open state and enters a normal operation state, therefore, after the control system 4 receives the current signal, and after the current value in the current signal is determined to be greater than the current threshold value and is continuously set for a long time, the electric valve 2 is controlled to be opened, the liquid pumped by the centrifugal pump 1 can flow to a set position through the electric valve 2, and continuous pumping of the liquid is realized. In this way, it is possible to reduce the possibility that the centrifugal pump 1 cannot be started after the electric valve 2 is opened when the current value of the centrifugal pump 1 is equal to or less than the current threshold value.
In the disclosed embodiment, the instantaneous current value at start-up of the centrifugal pump 1 is large, 5-6 times the rated current, and then the current value will drop. When the current value is greater than 20% of the rated current, the centrifugal pump 1 may possibly enter a normal operation state, and therefore, the current threshold value may be set to 20% of the rated current, that is, 0.2 times the rated current. The set time period may be set empirically, and may be 5 seconds, for example.
In some embodiments of the present disclosure, the electric valve 2 includes an electric valve body and an actuator (not shown in fig. 1), and the actuator is used for sending the first status signal or the second status signal to the control system 4, and the actuator refers to a mechanical component which uses electric energy as a main energy source and is used for driving the electric valve body to start and stop. The actuator can detect whether the electric valve body is in an open state or a closed state, and send a first state signal representing the open state or a second state signal representing the closed state to the control system 4. This motorised valve 2 structure is comparatively simple, and then makes the structure of the liquid suction device of this disclosed embodiment comparatively simple.
In addition, when the control system 4 controls the opening of the electric valve 2, a first opening signal can be sent to the electric valve 2, and the actuator can receive the first opening signal and control the opening of the electric valve body; when the control system 4 controls the electric valve 2 to close, a first stop signal can be sent to the electric valve 2, and the actuator can receive the first stop signal and control the electric valve body to close.
In some embodiments of the present disclosure, the centrifugal pump 1 is further configured to send a third status signal indicative of an on state of the centrifugal pump 1 or a fourth status signal indicative of an off state of the centrifugal pump 1 to the control system 4.
The centrifugal pump 1 comprises a centrifugal pump body, and a current sensor and an operation signal detector which are fixed on the centrifugal pump body, wherein the current sensor is used for detecting a current signal of the centrifugal pump body and sending the current signal to the control system 4; the operation signal detector is configured to detect a third status signal or a fourth status signal and send the third status signal or the fourth status signal to the control system 4. The third state signal may carry third information representing the opening state of the centrifugal pump 1, the fourth state signal may carry fourth information representing the closing state of the centrifugal pump 1, and the third information and the fourth information may be represented by 0 or 1, for example, the third information is 1, and the fourth information is 0; or the third information is 0 and the fourth information is 1.
Because current sensor has advantages such as the commonality is higher, simple structure and easy purchase, consequently, aforementioned structure can make the structure of the liquid suction device of this disclosed embodiment comparatively simple.
In addition, in the process of detecting the current signal of the centrifugal pump body, besides the current sensor, other instruments having the function of detecting the current signal, such as an ammeter, may be used.
As shown in fig. 1, in some embodiments of the present disclosure, the liquid pumping arrangement further comprises a manual valve 6 located in the inlet line 13 of the centrifugal pump 1. When the liquid suction device of the embodiment of the present disclosure is required to suck liquid, a worker may open the manual valve 6 first, and then input a device start signal on the control panel 3, and the control system 4 controls the centrifugal pump 1 to be started when receiving the device start signal and receiving the second status signal. When the manual valve 6 is in the closed state, the suction process of the liquid cannot be performed even if the centrifugal pump 1 is opened. Therefore, this structure can reduce the situation that the centrifugal pump 1 performs the suction processing on the liquid without the need of sucking the liquid due to the misoperation of the worker.
As shown in fig. 1, in some embodiments of the present disclosure, the liquid pumping device is used for pumping out the liquid in the storage device 5, and the liquid pumping device further includes a liquid level sensor 7 disposed in the storage device 5, wherein the liquid level sensor 7 is used for detecting the liquid level height of the liquid and sending a liquid level height signal to the control system 4.
And the control system 4 is used for controlling the centrifugal pump 1 to be closed when the third state signal and the liquid level height signal are received and the liquid level height is lower than the height threshold value.
The storage device 5 may be a well or a tank or the like having a device for storing liquid. The liquid level height signal sent by the liquid level sensor 7 in the storage device 5 to the control system 4 carries liquid level height information representing the liquid level height in the storage device 5. When the control system 4 receives the third status signal and the liquid level height signal, and the liquid level height is lower than the height threshold, it indicates that the liquid level in the storage device 5 is low at this time, and the centrifugal pump 1 is still in the open state, i.e. the centrifugal pump 1 continues to pump liquid, and therefore, the centrifugal pump 1 can be controlled to be closed. In this way, it is possible to prevent the centrifugal pump 1 from being damaged by continuing idling after the centrifugal pump 1 has pumped the liquid in the storage facility 5.
As shown in fig. 1, in some embodiments of the present disclosure, the control panel 3 is provided with an operation button 31, the operation button 31 is used for a user to input a device start signal and a device stop signal, and the control system 4 is further used for locking the operation button 31 when the fourth status signal and the liquid level height signal are received and the liquid level height is lower than the height threshold. After the control system 4 receives the fourth state signal and the liquid level height signal, because the fourth state signal represents the off state of the centrifugal pump 1, and the liquid level height being lower than the height threshold value indicates that the liquid level in the storage device 5 is low at this time and is not suitable for pumping the liquid in the storage device 5, the operator cannot operate the operation button 31 after locking the operation button 31, that is, cannot input the device opening signal through the operation button 31. Thus, after the operator inputs the device start signal through the operation button 31, the centrifugal pump 1 can be prevented from continuously idling after the centrifugal pump 1 finishes pumping the liquid in the storage device 5, and the centrifugal pump 1 can be prevented from being damaged.
As shown in fig. 1, in some embodiments of the present disclosure, a check valve 8 is further connected between the centrifugal pump 1 and the electric valve 2, and the check valve 8 can prevent the liquid between the check valve 8 and the electric valve 2 from flowing to between the check valve 8 and the centrifugal pump 1 through the check valve 8, that is, the check valve 8 can prevent the liquid from flowing backwards.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure are included in the scope of protection of the present disclosure.
Claims (5)
1. A liquid pumping apparatus, comprising:
a centrifugal pump;
the electric valve is arranged on an outlet pipeline of the centrifugal pump and used for controlling the opening and closing of an outlet of the centrifugal pump and outputting a first state signal representing the opening state of the electric valve and a second state signal representing the closing state of the electric valve;
the control panel is used for inputting a device starting signal and a device closing signal by a user;
and the control system is respectively electrically connected with the centrifugal pump, the electric valve and the control panel and is used for controlling the centrifugal pump to be opened when the device starting signal is received and the second state signal is received, and controlling the electric valve to be opened after the centrifugal pump is opened for a set time.
2. The fluid pumping apparatus of claim 1, wherein the control system is further configured to control the centrifugal pump and the electrically operated valve to close upon receipt of the apparatus close signal.
3. The fluid aspiration device of claim 1, wherein the electrically operated valve comprises an electrically operated valve body and an actuator for sending the first status signal or the second status signal to the control system.
4. A fluid-pumping device according to claim 1, further comprising a manual valve located in the inlet line of the centrifugal pump.
5. Liquid pumping apparatus according to any of claims 1 to 4, characterized in that a check valve is further connected between the centrifugal pump and the electric valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120533056.9U CN216278511U (en) | 2021-03-15 | 2021-03-15 | Liquid suction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120533056.9U CN216278511U (en) | 2021-03-15 | 2021-03-15 | Liquid suction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216278511U true CN216278511U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120533056.9U Active CN216278511U (en) | 2021-03-15 | 2021-03-15 | Liquid suction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216278511U (en) |
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2021
- 2021-03-15 CN CN202120533056.9U patent/CN216278511U/en active Active
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