Valve linkage control device, water replenishing device, water collecting tank and cooling tower

Abstract

The utility model discloses a valve linkage control device, a water replenishing device, a water collecting tank and a cooling tower. The valve linkage control device comprises a liquid level sensor, a controller, a first water replenishing valve and a second water replenishing valve. Wherein the liquid level sensor is arranged in the water collecting tank and used for collecting liquid level data of the water collecting tank and transmitting the liquid level data of the water collecting tank to the controller. And the controller is used for controlling the on-off of the first water replenishing valve and / or the on-off of the second water replenishing valve according to the liquid level data of the water collecting tank. The first water supplementing valve is arranged on the first water supplementing pipeline, the two ends of the first water supplementing pipeline communicate with the water collecting pool and the water source correspondingly, and the first water supplementing pipeline is used for opening and conducting the first water supplementing pipeline under the control of the controller so that water of the water source can be guided into the water collecting pool through the first water supplementing pipeline. Or is used for closing and disconnecting the first water replenishing pipeline under the control of the controller so as to prevent water from flowing to the water collecting tank from the water source through the first water replenishing pipeline. The second water supplementing valve is arranged on a second water supplementing pipeline, the two ends of the second water supplementing pipeline communicate with the water collecting pool and the water source correspondingly, and the second water supplementing pipeline is used for being opened and communicated under the control of the controller so that water of the water source can be guided into the water collecting pool through the second water supplementing pipeline. Or under the control of the controller, the second water supplementing pipeline is closed and cut off, so that water is prevented from flowing to the water collecting tank from the water source through the second water supplementing pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve linkage control device, a water replenishing device, a water collecting pool and a cooling tower. BACKGROUND

[0002] In a data center, most of the refrigeration systems of the machine room adopt centralized water systems, and even the new technology liquid cooling system also involves a cooling water system. As a water system, it cannot do without the scene of water replenishment, and the most critical water storage device for water replenishment is the underground water pool, water storage tank, etc. In order to ensure the normal use of the water storage device, a corresponding liquid level control valve must be configured. Such as mechanical float ball valve, electric valve, etc.

[0003] Mechanical valves use mechanical methods to control the liquid level height, and electric valves control the liquid level height through electronic liquid level meters, which are independent of each other. But with the current application, the disadvantages of mechanical valves and electric valves have also been exposed, and many float ball valve damage events have occurred, and the main reason is that the float ball valve body falls off. And the electric valve controlled by the electronic liquid level meter also has the disadvantages of electronic liquid level meter failure, electric signal loss and unable to control the switch. These problems may cause the water system to fail to operate normally. INVENTION CONTENTS

[0004] The technical problem to be solved by the utility model is to solve the above-mentioned problems in the prior art, that is, the disadvantages of mechanical valves and electric valves in the prior art cause the water system to fail to operate normally.

[0005] In a first aspect, the utility model provides a valve linkage control device, which comprises a liquid level sensor, a controller, a first water replenishing valve and a second water replenishing valve. The liquid level sensor is arranged in the water collecting pool and is used to collect the liquid level data of the water collecting pool and transmit the liquid level data of the water collecting pool to the controller. The controller is used to control the on-off of the first water replenishing valve and / or the on-off of the second water replenishing valve according to the liquid level data of the water collecting pool. The first water replenishing valve is arranged on the first water replenishing pipeline, and the two ends of the first water replenishing pipeline are respectively connected with the water collecting pool and the water source in communication, which is used to open and conduct the first water replenishing pipeline under the control of the controller, so as to guide the water from the water source to the water collecting pool through the first water replenishing pipeline, or to close and shut off the first water replenishing pipeline under the control of the controller, so as to prevent the water from flowing from the water source to the water collecting pool through the first water replenishing pipeline. The second water replenishing valve is arranged on the second water replenishing pipeline, and the two ends of the second water replenishing pipeline are respectively connected with the water collecting pool and the water source in communication, which is used to open and conduct the second water replenishing pipeline under the control of the controller, so as to guide the water from the water source to the water collecting pool through the second water replenishing pipeline, or to close and shut off the second water replenishing pipeline under the control of the controller, so as to prevent the water from flowing from the water source to the water collecting pool through the second water replenishing pipeline.

[0006] Optionally, the first water supplement valve and the second water supplement valve are different types.

[0007] Optionally, the first water supplement valve comprises a float ball valve. The float ball valve is arranged at an end of the first water supplement pipeline in communication with the water collecting pool, and is configured to open and turn on the first water supplement pipeline when the liquid level data of the water collecting pool reaches the first liquid level data, and to close and turn off the first water supplement pipeline when the liquid level data of the water collecting pool reaches the second liquid level data. The second liquid level data is greater than the first liquid level data.

[0008] Optionally, the second water supplement valve comprises an electric valve. The electric valve is electrically connected to the controller. The electric valve is configured to open and turn on the second water supplement pipeline under the control of the controller, and to close and turn off the second water supplement pipeline under the control of the controller. The controller is configured to open the electric valve to turn on the second water supplement pipeline when the liquid level data of the water collecting pool reaches the third liquid level data, and to close the electric valve to turn off the second water supplement pipeline when the liquid level data of the water collecting pool reaches the fourth liquid level data. The third liquid level data is less than the first liquid level data, and the fourth liquid level data is higher than the second liquid level data.

[0009] Optionally, the valve linkage control device further comprises a motor electrically connected to the controller and configured to be started or stopped under the control of the controller. An output end of the motor is further connected to the float ball of the float ball valve, and is configured to rotate in a first direction under the control of the controller to drive the float ball of the float ball valve to move upward when the motor is started, and to rotate in a second direction under the control of the controller to drive the float ball of the float ball valve to move downward, the first direction being opposite to the second direction. The controller is configured to control the motor to start when the liquid level data of the water collecting pool reaches the fifth liquid level data, to drive the float ball of the float ball valve to move downward until the float ball valve turns on the first water supplement pipeline, and then to control the motor to stop. The controller is also configured to control the motor to start when the liquid level data of the water collecting pool reaches the sixth liquid level data, to drive the float ball of the float ball valve to move upward until the float ball valve closes and turns off the first water supplement pipeline, and then to control the motor to stop. The fifth liquid level data is less than the third liquid level data, and the sixth liquid level data is greater than the fourth liquid level data.

[0010] Optionally, the valve linkage control device further comprises a screw rod. Two ends of the screw rod are respectively connected to the output end of the motor and the float ball of the float ball valve, and are configured to drive the float ball of the float ball valve to move upward or downward under the drive of the motor.

[0011] Optionally, the valve linkage control device further comprises an electric reversing valve, a first end of the electric reversing valve being connected to the water source through a pipeline, a second end of the electric reversing valve being connected to the first water supplement pipeline, and a third end of the electric reversing valve being connected to the second water supplement pipeline.

[0012] Optionally, the valve linkage control device further comprises a first manual valve arranged on the first water supplement pipeline.

[0013] In a second aspect, the utility model provides a water supplement device comprising the valve linkage control device.

[0014] In a third aspect, the utility model provides a water collecting pool comprising the water supplement device.

[0015] In a fourth aspect, the utility model provides a cooling tower, the bottom of the cooling tower being provided with the water collecting pool.

[0016] The valve linkage control device, the water supplement device, the water collecting pool and the cooling tower provided by the embodiments of the utility model have the beneficial effects that the valve linkage control device provided by the embodiments of the utility model can judge the state of the water collecting pool through the liquid level sensor, and realizes reliable remote monitoring means. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic diagram of a valve linkage control device provided by an embodiment of the utility model;

[0018] Figure 2 Fig. 2 is a structural schematic diagram of another valve linkage control device provided by an embodiment of the utility model;

[0019] Figure 3 Fig. 3 is a structural schematic diagram of still another valve linkage control device provided by an embodiment of the utility model;

[0020] Figure 4 Fig. 4 is a structural schematic diagram of yet another valve linkage control device provided by an embodiment of the utility model;

[0021] Figure 5 Fig. 5 is a control flowchart of the valve linkage control device provided by an embodiment of the utility model;

[0022] Figure 6 Fig. 6 is a control flowchart of another valve linkage control device provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below in combination with the drawings and examples.

[0024] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by various orientation terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] The embodiment of the utility model provides a valve linkage control device, as Figure 1 Indicated, the valve linkage control device includes liquid level sensor 1, controller 2, first water replenishing valve F1 and second water replenishing valve F2. Wherein, liquid level sensor 1 is arranged in catch basin 3, is used to gather the liquid level data of catch basin 3, and transmits the liquid level data of catch basin 3 to controller 2. Controller 2 is used to control the on-off of first water replenishing valve F1 and / or the on-off of second water replenishing valve F2 according to the liquid level data of catch basin 3. First water replenishing valve F1 is arranged on first water replenishing pipeline, and the two ends of first water replenishing pipeline are connected with catch basin 3 and water source 4 respectively, is used to open and conduct under the control of controller 2 first water replenishing pipeline, to guide the water of water source 4 to catch basin 3 via first water replenishing pipeline, or is used to close and shut off under the control of controller 2 first water replenishing pipeline, to prevent water from water source 4 via first water replenishing pipeline to catch basin 3. Second water replenishing valve F2 is arranged on second water replenishing pipeline, and the two ends of second water replenishing pipeline are connected with catch basin 3 and water source 4 respectively, is used to open and conduct under the control of controller 2 second water replenishing pipeline, to guide the water of water source 4 to catch basin 3 via second water replenishing pipeline, or is used to close and shut off under the control of controller 2 second water replenishing pipeline, to prevent water from water source 4 via second water replenishing pipeline to catch basin 3.

[0026] It can be understood that, as Figure 1 Indicated, first water replenishing pipeline refers to the pipeline of water source 4 to first water replenishing port 31, and second water replenishing pipeline refers to the pipeline of water source 4 to second water replenishing port 32.

[0027] Exemplarily, controller 2 can be PLC controller. Controller 2 can realize the control of the on-off of first water replenishing pipeline by controlling the on-off of first water replenishing valve F1, and also can realize the control of the on-off of second water replenishing pipeline by controlling the on-off of second water replenishing valve F2, so that first water replenishing pipeline and second water replenishing pipeline are redundant to each other.

[0028] In some embodiments, the first water replenishing valve and the second water replenishing valve are different in kind.

[0029] For example, the first water supply valve is a mechanical valve, and the second water supply valve is an electric valve. In this way, the same failure can be effectively avoided from occurring in a single type of valve.

[0030] In some embodiments, such as Figure 1 As shown, the first water supply valve F1 includes a float valve. The float valve is located at the end of the first water supply pipeline connected to the water collection tank 3. It is used to open the first water supply pipeline when the water level in the water collection tank 3 reaches a first water level, and to close and shut off the first water supply pipeline when the water level in the water collection tank reaches a second water level. The second water level is greater than the first water level.

[0031] Understandably, the float valve in this embodiment refers to a mechanical float valve, which is a valve composed of components such as a crank arm and a float. It can be used to automatically control the liquid level in a water tower or pool. The float valve is small in size, easy to install, highly sensitive to activation, has low head loss, and no water hammer phenomenon, which can greatly improve the utilization rate of the water tower or pool. When the float valve is working normally, the controller 2 may not control the float valve to avoid damaging it.

[0032] Understandably, if the float valve can open and close normally, and the liquid level in the collection tank 3 is at the first liquid level, it means the conditions for opening the float valve have been met. Water can then be added to the collection tank 3 by opening the float valve. If the liquid level in the collection tank 3 is at the second liquid level, it means the liquid level in the collection tank 3 has reached the height required to close the float valve, and water addition can be stopped. This invention does not limit the specific values ​​of the first and second liquid level data; operators can set the specific values ​​of the first and second liquid level data according to the actual scenario. For example, the specific values ​​of the first and second liquid level data can be set according to the position of the float valve.

[0033] Understandably, using a float valve does not consume additional electrical energy, so as long as the float valve can work properly, it is preferable to use the first water supply line to replenish water to the water collection tank 3 in order to save energy.

[0034] In some embodiments, such as Figure 1 As shown, the second water supply valve F2 includes an electric valve. The electric valve is electrically connected to the controller. It is used to open and connect the second water supply line under the control of the controller, and to close and shut off the second water supply line under the control of the controller 2. The controller is used to open the electric valve to connect the second water supply line when the liquid level data of the water collection tank 3 reaches a third liquid level data, and to close the electric valve when the liquid level data of the water collection tank 3 reaches a fourth liquid level data. The third liquid level data is lower than the first liquid level data, and the fourth liquid level data is higher than the second liquid level data.

[0035] It can be understood that if the float ball valve works normally, the liquid level data of the water collecting pool 3 will not decrease from the first liquid level data to the third liquid level data, and when the data received by the controller 2 from the liquid level sensor 1 reaches the third liquid level data, it indicates that the float ball valve does not work normally, and the first water supplement pipeline cannot be turned on to supplement water for the water collecting pool 3. Therefore, when the liquid level data of the water collecting pool 3 reaches the third liquid level data, the float ball valve cannot be normally opened. If the float ball valve works normally, the liquid level data of the water collecting pool 3 will not increase from the second liquid level data to the fourth liquid level data, and when the data received by the controller 2 from the liquid level sensor 1 reaches the fourth liquid level data, it indicates that the float ball valve does not work normally, and the first water supplement pipeline cannot be closed and shut off, that is, the water supplement cannot be stopped. Therefore, when the liquid level data of the water collecting pool 3 reaches the fourth liquid level data, the float ball valve cannot be normally closed. The specific values of the third liquid level data and the fourth liquid level data are not limited in the utility model, and the specific values of the third liquid level data and the fourth liquid level data can be set according to the actual scene by the staff.

[0036] It can be understood that in the case that the float ball valve is in a damaged state, the first water supplement pipeline is not available, and the second water supplement pipeline as a redundancy of the first water supplement pipeline can be selected to supplement water for the water collecting pool 3. When the liquid level data of the water collecting pool 3 reaches the third liquid level data, the controller 2 can control the electric valve to be opened, so that the second water supplement pipeline is turned on. When the liquid level in the water collecting pool 3 reaches the second liquid level data, the controller 2 can control the electric valve to be closed, so that the second water supplement pipeline is shut off, and the water supplement is completed.

[0037] In some embodiments, as shown in Figure 2 The valve linkage control device further comprises a motor 5 electrically connected with the controller 2 and used for starting or stopping under the control of the controller 2. The output end of the motor 5 is further connected with the float ball of the float ball valve, and is used for rotating in a first direction under the control of the controller 2 to drive the float ball valve to move upward in the case of starting of the motor 5, and rotating in a second direction under the control of the controller 2 to drive the float ball valve to move downward, the first direction being opposite to the second direction. The controller 2 is used for controlling the motor 5 to start in the case that the liquid level data of the water collecting pool 3 reaches a fifth liquid level data, so that the motor 5 drives the float ball of the float ball valve to move downward, and the motor 5 is stopped after the float ball valve turns on the first water supplement pipeline. The controller 2 is used for controlling the motor 5 to start in the case that the liquid level data of the water collecting pool 3 reaches a sixth liquid level data, so that the motor 5 drives the float ball of the float ball valve to move upward, and the motor 5 is stopped after the float ball valve closes and shuts off the first water supplement pipeline. The fifth liquid level data is less than the third liquid level data, and the sixth liquid level data is greater than the fourth liquid level data.

[0038] It can be understood that, in the case that the liquid level data of the water collecting pool 3 reaches the first liquid level data, if the float ball valve can work normally, the water of the water collecting pool 3 will increase, not decrease, if the float ball valve has been damaged and the electric valve is opened in time, and if the electric valve can work normally, the water of the water collecting pool 3 will also continue to increase, and the liquid level data of the water collecting pool 3 will not be as low as the fifth liquid level data. Therefore, in the case that the liquid level data of the water collecting pool 3 reaches the fifth liquid level data, it is indicated that the float ball valve and the electric valve cannot normally open. In the case that the liquid level data of the water collecting pool 3 reaches the second liquid level data, if the float ball valve can work normally, the liquid level data of the water collecting pool 3 will not continue to increase, if the float ball valve has been damaged and the electric valve is opened in time, and if the electric valve can work normally, the water of the water collecting pool 3 will also not continue to increase to the sixth liquid level data. Therefore, in the case that the liquid level data of the water collecting pool 3 reaches the fifth liquid level data, it is indicated that the float ball valve and the electric valve cannot normally close. The specific values of the fifth liquid level data and the sixth liquid level data are not limited in the utility model, and the specific values of the fifth liquid level data and the sixth liquid level data can be set according to actual scenes by the staff.

[0039] It can be understood that, in the case that the float ball valve and the electric valve cannot work normally, if the electric valve and the float ball valve are not repaired in time, the electric valve and the float ball valve cannot be normally used, and the first water supplement pipeline and the second water supplement pipeline cannot be turned on. However, the motor can drive the float ball of the float ball valve to move up and down, so that, under the driving of external force, the opening and closing of the float ball valve can be realized even if the float ball valve has failed, and the turning on and turning off of the first water supplement pipeline can also be realized.

[0040] It can be understood that, by controlling the action of the mechanical float ball valve through the motor 5, the failure of the float ball valve can be effectively avoided.

[0041] In some embodiments, the valve linkage control device further comprises a lead screw (not shown in the figure). The two ends of the lead screw are respectively connected with the output end of the motor 5 and the float ball of the float ball valve, and are used to drive the float ball of the float ball valve to move upward or downward under the driving of the motor 5.

[0042] Exemplarily, the lead screw can convert the rotary motion of the motor 5 into the linear reciprocating motion of the lead screw.

[0043] In some embodiments, as shown in Figure 3 the valve linkage control device further comprises an electrically controlled reversing valve 6. The first end of the electrically controlled reversing valve 6 is connected with the water source 4 through a pipeline, the second end of the electrically controlled reversing valve 6 is connected with the first water supplement pipeline, and the third end of the electrically controlled reversing valve 6 is connected with the second water supplement pipeline. The electrically controlled reversing valve 6 is electrically connected with the controller 2, and is used to turn on the first end and the second end of the electrically controlled reversing valve 6 under the control of the controller 2, or is used to turn on the first end and the third end of the electrically controlled reversing valve 6 under the control of the controller 2.

[0044] It can be understood that the controller 2 can turn on the first end of the electrically operated reversing valve 6 and the second end of the electrically operated reversing valve 6 to enable the water in the water source 4 to enter the first water supplement pipeline in the case of needing to supplement the water tank 3 with the first water supplement pipeline. The controller 2 can also turn on the first end of the electrically operated reversing valve 6 and the third end of the electrically operated reversing valve 6 to enable the water in the water source 4 to enter the second water supplement pipeline in the case of needing to supplement the water tank 3 with the second water supplement pipeline.

[0045] Exemplarily, the case of needing to supplement the water tank 3 with the first water supplement pipeline includes the case of needing to use the float ball valve, and the case of needing to supplement the water tank 3 with the first water supplement pipeline includes the case of needing to use the electrically operated valve. For a specific case, reference can be made to the related description in the above embodiment, which will not be described here again.

[0046] It can be understood that the working principle of the valve linkage control device in the embodiment of the utility model is as shown in Figure 5 and Figure 6 . As shown in Figure 5 , when the liquid level data of the water tank 3 reaches the first liquid level data, if the float ball valve can be normally opened, the float ball valve is opened and the water supplement is started. When the liquid level data of the water tank 3 reaches the third liquid level data due to the failure of the float ball valve to be opened, the first end and the third end of the electrically operated reversing valve 6 are controlled to be turned on and the electrically operated valve is opened. If the electrically operated valve can be normally opened, the water supplement is started. When the liquid level data of the water tank 3 reaches the fifth liquid level data due to the failure of the electrically operated valve to be normally opened, the first end and the second end of the electrically operated reversing valve 6 are controlled to be turned on by the controller 2, and the float ball of the float ball valve is enabled by the motor 5. The float ball valve is opened by external force, and the water supplement is started through the first water supplement pipeline. As shown in Figure 6 , after the water supplement is started, when the water level of the water tank 3 reaches the second liquid level data, if the float ball valve can be normally closed, the float ball valve is closed and the water supplement is stopped. When the float ball valve fails to be closed, the first water supplement pipeline will always supplement the water tank 3 until the liquid level of the water tank 3 reaches the fourth liquid level data. At this time, the first end and the third end of the electrically operated reversing valve 6 are controlled to be turned on and the electrically operated valve is closed. If the electrically operated valve can be normally closed, the water supplement can be stopped. When the liquid level data of the water tank 3 reaches the sixth liquid level data due to the failure of the electrically operated valve to be normally closed, the first end and the second end of the electrically operated reversing valve 6 are controlled to be turned on by the controller 2, and the float ball of the float ball valve is enabled by the motor 5. The float ball valve is closed by external force, and the water supplement is stopped.

[0047] In some embodiments, as shown in Figure 4 , the valve linkage control device further comprises a first manually operated valve 7, and the first manually operated valve 7 is arranged on the first water supplement pipeline.

[0048] It can be understood that the first manual valve 7 is used for manually controlling the opening and closing of the first water supplement pipeline. For example, in the case of motor damage or sudden power failure causing the motor to be unable to operate, the first water supplement pipeline can be closed through the first manual valve 7 to avoid the situation that the float ball valve is always opened and water is always supplemented to the water collecting pool due to the motor pressing the float ball down.

[0049] Compared with the system of the single valve, the valve linkage control device provided by the embodiment of the utility model increases the linkage mode between the mechanical valve (the float ball valve) and the electric valve, can effectively avoid the single point failure, and can ensure the normal use of the system regardless of the problem of any link. When water needs to be supplemented or stopped, the action is sequentially determined according to the sequence of the float ball valve, the electric valve and the motor control. Even in the case of float ball valve and electric valve failure, normal water supplement work can still be ensured. In the case of single point failure of any one of the first water supplement pipeline and the second water supplement pipeline, the device can conduct one of the water supplement pipelines, reduces the situation that the water system is unavailable due to single point failure, can effectively avoid some specific two-point failure, and effectively improves the stability and reliability of the system.

[0050] The valve linkage control device provided by the embodiment of the utility model will be exemplarily described below with a specific example.

[0051] In the example, the valve linkage control device is as shown in Figure 3 The valve linkage control device includes an electric reversing valve, an electric valve, a controller, a motor and a float ball valve.

[0052] The electric reversing valve changes the water flow transmission direction as needed, changes the valve core position through the motor driving, and then controls the flow direction of the fluid. When the float ball valve needs to be actuated, the water flow direction is adjusted to the water supplement port 31. When the electric valve needs to be actuated, the water flow is adjusted to the water supplement port 32.

[0053] The electric valve opens and closes according to the control signal. The valve is opened during water supplement, and the valve is closed during stopping of water supplement.

[0054] The controller can control the motor movement according to the electronic liquid level meter sensor parameters. Multiple liquid level control parameters can be set and customized in the water supplement system.

[0055] The motor determines whether to enable the float ball and drive the float ball to move up and down according to the output signal of the controller. When the float ball is enabled, the float ball valve cannot be controlled by the mechanical action and needs to be controlled by the motor. There are two movement directions. The float ball moves downward to open the system for water supplement, and the float ball moves upward to stop the system for water supplement.

[0056] The ball float valve can control the opening and closing of the water replenishing port 1. When the ball float moves downward, the water replenishing starts, and when the ball float moves upward, the water replenishing stops. When not controlled by the motor, the water level can be controlled by the mechanical action of the ball float, and the ball float is connected with the motor. The motor uses a telescopic metal tube to drive the ball float valve to move up and down. When the motor is enabled, the metal tube can drive the ball float valve to move up and down. When the motor is not enabled, only the ball float itself moves up and down under the water buoyancy.

[0057] The valve linkage control device in the example can effectively avoid single-point failure of the device, because Figure 5 and Figure 6 When the water level data of the water collecting pool 3 reaches the first water level data, if the ball float valve can be normally opened, the ball float valve is opened and the water replenishing starts. When the ball float valve fails to be opened and the water level data of the water collecting pool 3 reaches the third water level data, the first end and the third end of the electric change-over valve 6 are controlled to be conducted, and the electric valve is opened. If the electric valve can be normally opened, the water replenishing starts. When the electric valve also fails to be normally opened and the water level data of the water collecting pool 3 reaches the fifth water level data, the first end and the second end of the electric change-over valve 6 are controlled to be conducted by the controller 2, and the motor 5 is enabled to the ball float of the ball float valve, so that the ball float valve is opened by external force. At this time, the water replenishing can be performed through the first water replenishing pipeline. Figure 6 When the water level of the water collecting pool 3 reaches the second water level data after the water replenishing starts, if the ball float valve can be normally closed, the ball float valve is closed and the water replenishing stops. When the ball float valve fails to be closed, the first water replenishing pipeline replenishes water to the water collecting pool 3 until the water level of the water collecting pool 3 reaches the fourth water level data. At this time, the first end and the third end of the electric change-over valve 6 are controlled to be conducted, and the electric valve is closed. If the electric valve can be normally closed, the water replenishing stops. When the electric valve also fails to be normally closed and the water level data of the water collecting pool 3 reaches the sixth water level data, the first end and the second end of the electric change-over valve 6 are controlled to be conducted by the controller 2, and the motor 5 is enabled to the ball float of the ball float valve, so that the ball float valve is closed by external force, and the water replenishing stops.

[0058] In the valve linkage control device in the example, if the ball float valve is normal, the water level height feedback is normal, the liquid level sensor does not alarm, and the motor is in a non-enabled state, and only the mechanical action of the ball float valve itself or the action of the electric valve is relied on. If the liquid level sensor feedback alarms (the water level data of the water collecting pool reaches the fifth water level data or the sixth water level data), it is judged whether the ball float is pulled up or pressed down, so as to control the water level in the water collecting pool. This linkage can effectively avoid single-point failure. After the linkage of the ball float valve and the electric valve, the water level control can be realized by the control method, and the situation that the system cannot be used due to single-point failure can be reduced.

[0059] The embodiment of the utility model provides a water replenishing device, which comprises a valve linkage control device provided by some embodiments of the utility model.

[0060] The detailed scheme and beneficial effects of the water replenishing device provided by the embodiments of the present application can refer to the detailed scheme and beneficial effects of the valve linkage control device provided by the embodiments of the present application, which will not be repeated here.

[0061] The embodiments of the present application provide a water collecting pool, which comprises the water replenishing device provided by some embodiments of the present application.

[0062] The detailed scheme and beneficial effects of the water collecting pool provided by the embodiments of the present application can refer to the detailed scheme and beneficial effects of the valve linkage control device provided by the embodiments of the present application, which will not be repeated here.

[0063] The embodiments of the present application provide a cooling tower, and the bottom of the cooling tower is provided with the water collecting pool provided by some embodiments of the present application.

[0064] The detailed scheme and beneficial effects of the cooling tower provided by the embodiments of the present application can refer to the detailed scheme and beneficial effects of the valve linkage control device provided by the embodiments of the present application, which will not be repeated here.

[0065] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the present application, and the present application is not limited to this. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also regarded as the protection scope of the present application.

Claims

1. A valve linkage control device, characterized by, The application relates to a water supply system, comprising: a liquid level sensor arranged in a water collecting pool and configured to collect liquid level data of the water collecting pool and transmit the liquid level data of the water collecting pool to a controller; the controller configured to control opening and closing of a first water supply valve and / or opening and closing of a second water supply valve according to the liquid level data of the water collecting pool; the first water supply valve arranged on a first water supply pipeline, two ends of the first water supply pipeline being connected to the water collecting pool and a water source respectively, and the first water supply valve being configured to open and conduct the first water supply pipeline under the control of the controller to guide water from the water source to the water collecting pool through the first water supply pipeline, or being configured to close and shut off the first water supply pipeline under the control of the controller to prevent water from flowing from the water source to the water collecting pool through the first water supply pipeline; and the second water supply valve arranged on a second water supply pipeline, two ends of the second water supply pipeline being connected to the water collecting pool and the water source respectively, and the second water supply valve being configured to open and conduct the second water supply pipeline under the control of the controller to guide water from the water source to the water collecting pool through the second water supply pipeline, or being configured to close and shut off the second water supply pipeline under the control of the controller to prevent water from flowing from the water source to the water collecting pool through the second water supply pipeline.

2. The valve linkage control device of claim 1, wherein The first water supply valve and the second water supply valve are different in type.

3. The valve linkage control device of claim 1, wherein The first water supply valve comprises a float ball valve arranged at an end of the first water supply pipeline connected to the water collecting pool, and the float ball valve is configured to open and conduct the first water supply pipeline when the liquid level data of the water collecting pool reaches first liquid level data, and close and shut off the first water supply pipeline when the liquid level data of the water collecting pool reaches second liquid level data, the second liquid level data being greater than the first liquid level data.

4. The valve linkage control device of claim 3, wherein The second water supply valve comprises an electric valve, the electric valve being electrically connected to the controller, and the controller is configured to open the electric valve to conduct the second water supply pipeline when the liquid level data of the water collecting pool reaches third liquid level data, and close the electric valve to shut off the second water supply pipeline when the liquid level data of the water collecting pool reaches fourth liquid level data, the third liquid level data being less than the first liquid level data, and the fourth liquid level data being higher than the second liquid level data.

5. The valve linkage control device of claim 4, wherein The motor is electrically connected with the controller and is used to start or stop under the control of the controller; an output end of the motor is connected with the float ball of the float ball valve and is used to rotate in a first direction to drive the float ball of the float ball valve to move upward and rotate in a second direction to drive the float ball of the float ball valve to move downward under the control of the controller in the case that the motor is started, the first direction being opposite to the second direction; the controller is used to control the motor to start in the case that the liquid level data of the water collecting pool reaches fifth liquid level data, drive the float ball of the float ball valve to move downward until the motor is controlled to stop after the float ball valve turns on the first water supplement pipeline, and control the motor to start in the case that the liquid level data of the water collecting pool reaches sixth liquid level data, drive the float ball of the float ball valve to move upward until the motor is controlled to stop after the float ball valve is closed and the first water supplement pipeline is turned off; the fifth liquid level data is less than the third liquid level data; and the sixth liquid level data is greater than the fourth liquid level data.

6. The valve linkage control device of claim 5, wherein The screw rod is connected with the output end of the motor and the float ball of the float ball valve at two ends respectively and is used to drive the float ball of the float ball valve to move upward or downward under the drive of the motor.

7. The valve linkage control device of claim 1, wherein The electrically-driven reversing valve is electrically connected with the controller and is used to turn on the first end and the second end of the electrically-driven reversing valve or turn on the first end and the third end of the electrically-driven reversing valve under the control of the controller.

8. The valve linkage control device of claim 1, wherein The first water supplement pipeline further comprises: A first manual valve is arranged on the first water supplement pipeline.

9. A water replenishment device, characterized by, The valve linkage control device comprises any one of claims 1 to 8.

10. A sump, characterized by The water collecting pool comprises the water supplement device of claim 9.

11. A cooling tower characterized by, The bottom of the cooling tower is provided with the water collecting pool of claim 10. The bottom of the cooling tower is provided with the water collecting pool of claim 10.

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