Three-way valve actuator service life test system for data center CDU

Abstract

The utility model discloses a three-way valve actuator life test system used for a data center CDU, comprising a closed loop test pipeline, a PLC controller and a man-machine interaction unit, the closed loop test pipeline is provided with a circulating pump and a three-way valve, the output end of the circulating pump is communicated with the AB inlet end of the three-way valve, and the output end of the PLC controller is communicated with the AB inlet end of the three-way valve. The outlet end A and the outlet end B of the three-way valve are respectively converged through a first branch and a second branch and then are communicated with the input end of the circulating pump; a fourth pressure sensor is arranged at the outlet end A of the three-way valve, a fifth pressure sensor and a second flow sensor are sequentially arranged at the outlet end B of the three-way valve, and the PLC is connected with an actuator of the three-way valve and is configured to control the actuator to periodically select and switch the outlet end A and the outlet end B of the three-way valve. The action times of the actuator are recorded and output to the man-machine interaction unit; and the PLC completes corresponding sensing data acquisition and stops counting of action times of the actuator when the acquired data triggers a preset threshold value, so that the service life of the actuator is counted.

Description

Technical Field

[0001] This utility model belongs to the field of three-way valve actuator testing technology, and in particular relates to a three-way valve actuator life testing system for data center CDU. Background Technology

[0002] Existing data center CDUs utilize three-way valves extensively, and these valves undergo numerous flow path switching operations during operation. This frequent switching process often leads to worm wear issues in the three-way valve actuators. While data center CDUs require three-way valve actuators to control media flow, the wide variety of available actuators means that the initial factory testing conditions may not be suitable for the specific applications of data center CDUs. Furthermore, existing three-way valve actuators cannot predict their suitability for the specific operating conditions of data center CDUs.

[0003] Therefore, there is an urgent need for a system to selectively test the lifespan of three-way valve actuators in a batch of applications. Utility Model Content

[0004] The purpose of this invention is to overcome the problems of the prior art by disclosing a life test system for a three-way valve actuator used in a data center CDU. By conducting a life test on the number of times the three-way valve actuator runs, data is provided for the early selection process, and it can be verified more accurately whether the required number of runs is met.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A life testing system for a three-way valve actuator used in a data center CDU, the system comprising: a closed-loop test pipeline, a PLC controller, and a human-machine interface unit.

[0007] The closed-loop test pipeline is equipped with a circulation pump and a three-way valve. The output end of the circulation pump is connected to the AB inlet end of the three-way valve. The A outlet end and B outlet end of the three-way valve are connected to the input end of the circulation pump after the first branch and the second branch are merged respectively.

[0008] The three-way valve has a fourth pressure sensor at outlet A and a fifth pressure sensor and a second flow sensor at outlet B.

[0009] The PLC controller is connected to the actuator of the three-way valve and is configured to control the actuator to periodically switch between the A and B outlets of the three-way valve, and record the number of actuator actions and output it to the human-machine interface unit.

[0010] The PLC controller is also connected to the fourth pressure sensor, the fifth pressure sensor, and the second flow sensor to complete the acquisition of corresponding sensor data and stop the actuator's action count when the acquired data triggers a preset threshold.

[0011] According to a preferred embodiment, the closed-loop test pipeline is further provided with a first temperature sensor, which is located upstream of the circulating pump and is used to monitor the temperature of the medium in the closed-loop test pipeline.

[0012] According to a preferred embodiment, the closed-loop test pipeline is further provided with a cooling fan to cool the medium inside the closed-loop test pipeline.

[0013] According to a preferred embodiment, the first temperature sensor and the cooling fan are respectively connected to the PLC controller; and the cooling fan is configured to operate when the PLC controller detects that the temperature information collected by the first temperature sensor is greater than a preset value, and to stop operating when the temperature information collected by the first temperature sensor is lower than the preset value.

[0014] According to a preferred embodiment, the cooling fan is located downstream of the junction of the first branch and the second branch.

[0015] According to a preferred embodiment, the closed-loop test pipeline is further provided with a first flow sensor, and the first flow sensor is located downstream of the cooling fan and upstream of the circulating pump.

[0016] According to a preferred embodiment, the closed-loop test pipeline is externally connected to a medium input pipeline, the access node of which is located downstream of the cooling fan and upstream of the circulating pump, and the medium input pipeline is equipped with a liquid injection ball valve.

[0017] According to a preferred embodiment, the input end of the circulating pump is provided with a first pressure sensor, and the output end of the circulating pump is provided with a second pressure sensor.

[0018] According to a preferred embodiment, the AB inlet end of the three-way valve is further provided with a third pressure sensor.

[0019] The aforementioned main solution of this utility model and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted by this utility model and for which protection is sought. Those skilled in the art, after understanding the solution of this utility model, will realize, based on existing technology and common knowledge, that there are many combinations, all of which are technical solutions to be protected by this utility model; therefore, they are not exhaustively listed here.

[0020] The beneficial effects of this utility model are:

[0021] This system enables life testing of three-way valve actuators before their application in the field, ensuring that data center CDUs can stably control flow through the actuators. Furthermore, by selecting products that meet the operating conditions through testing, the system can reduce the significant losses caused by actuator failures. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the closed-loop test pipeline of the three-way valve actuator life test system of this utility model;

[0023] Figure 2 This is a schematic diagram of the test principle of the three-way valve actuator life test system of this utility model;

[0024] Among them, 1-injection ball valve, 2-circulation pump, 3-three-way valve, 4-cooling fan, 5-first flow sensor, 6-first temperature sensor, 7-first pressure sensor, 8-second pressure sensor, 9-third pressure sensor, 10-fourth pressure sensor, 11-fifth pressure sensor, 12-second flow sensor, 13-actuator. Detailed Implementation

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Furthermore, it should be noted that unless otherwise specified, the specific structures, connections, positions, power sources, etc. involved in this utility model are all things that a person skilled in the art can know without creative effort based on the prior art.

[0031] refer to Figure 1 As shown in the figure, a three-way valve actuator life testing system for a data center CDU is illustrated. The three-way valve actuator life testing system includes: a closed-loop test pipeline, a PLC controller, and a human-machine interface unit.

[0032] Preferably, the closed-loop test pipeline is equipped with a circulation pump 2 and a three-way valve 3. The output end of the circulation pump 2 is connected to the AB inlet end of the three-way valve 3. The A outlet end and B outlet end of the three-way valve 3 are connected to the input end of the circulation pump 2 after merging through the first branch and the second branch, respectively.

[0033] The A outlet of the three-way valve 3 is equipped with a fourth pressure sensor 10, and the B outlet of the three-way valve 3 is equipped with a fifth pressure sensor 11 and a second flow sensor 12 in sequence.

[0034] The PLC controller is connected to the actuator 13 of the three-way valve 3 and is configured to control the actuator 13 to periodically switch between the A outlet and B outlet of the three-way valve 3, and record the number of times the actuator 13 operates and output it to the human-machine interface unit.

[0035] The PLC controller is also connected to the fourth pressure sensor 10, the fifth pressure sensor 11, and the second flow sensor 12 to complete the acquisition of corresponding sensor data and stop counting the number of times the actuator 13 operates when the acquired data triggers a preset threshold, thereby realizing the statistics of the lifespan of the actuator 13.

[0036] Specifically, during the test, when actuator 13 is operating normally, the data collected by the fourth pressure sensor 10, the fifth pressure sensor 11, and the second flow sensor 12 are periodically changing quantities, the specific values ​​of which can be obtained from historical data. When the sensor data collected by the PLC controller deviates from the threshold range, the counting of the number of actions of actuator 13 can be stopped, thereby realizing the statistics of the lifespan of actuator 13.

[0037] Preferably, the closed-loop test pipeline is further provided with a first temperature sensor 6, which is located upstream of the circulating pump 2 and is used to monitor the temperature of the medium in the closed-loop test pipeline.

[0038] Preferably, the closed-loop test pipeline is further provided with a cooling fan 4 to cool the medium inside the closed-loop test pipeline.

[0039] Furthermore, the first temperature sensor 6 and the cooling fan 4 are respectively connected to the PLC controller; and the cooling fan 4 is configured to operate when the PLC controller detects that the temperature information collected by the first temperature sensor 6 is greater than a preset value, and to stop operating when the temperature information collected by the first temperature sensor 6 is lower than the preset value. This achieves closed-loop temperature control of the flowing medium in the test pipeline, ensuring the reliability of the test results of the actuator 13.

[0040] Preferably, the cooling fan 4 is located downstream of the junction of the first branch and the second branch.

[0041] Preferably, the closed-loop test pipeline is further provided with a first flow sensor 5, which is located downstream of the cooling fan 4 and upstream of the circulating pump 2, and is used to complete the flow monitoring on the main pipeline of the closed-loop test pipeline.

[0042] Preferably, the closed-loop test pipeline is provided with an external medium input pipeline. The connection node of the medium input pipeline is located downstream of the cooling fan 4 and upstream of the circulating pump 2. The medium input pipeline is provided with a liquid injection ball valve 1 to realize the liquid injection of the closed-loop test pipeline.

[0043] Preferably, the input end of the circulating pump 2 is equipped with a first pressure sensor 7, and the output end of the circulating pump 2 is equipped with a second pressure sensor 8, for monitoring the inlet and outlet pressures of the circulating pump 2. The AB inlet ends of the three-way valve 3 are also equipped with a third pressure sensor 9, for monitoring the inlet pressure of the three-way valve 3.

[0044] The testing method for this control system can be carried out using the following steps:

[0045] Step 1: Open the injection ball valve 1 to inject liquid into the closed-loop test pipeline until the water supply pressure of the closed-loop test pipeline and the total flow rate of the system reach the normal values.

[0046] Step 2: The PLC controller periodically outputs selection switch signals for the A and B outlet ends of the actuator 13 of the three-way valve 3.

[0047] Step 4: The three-way valve 3 starts running, and the current number of runs can be viewed through the human-machine interface unit.

[0048] Step 5: The PLC controller collects the sensor data from the fourth pressure sensor 10, the fifth pressure sensor 11, and the second flow sensor 12, and stops counting the number of times the actuator 13 operates when the collected data triggers a preset threshold, thereby realizing the lifespan statistics of the actuator 13.

[0049] If the three-way valve actuator exhibits abnormal pressure and flow before reaching the set number of operation cycles, the product is deemed unqualified, and testing is stopped.

[0050] The equipment and electronic components used in this utility model are all existing known equipment and electronic components. By scientifically and ingeniously combining the above-mentioned existing equipment and electronic components, the problem of selecting three-way valve actuators in the field of data center CDU is effectively solved, and the loss caused to data center CDU due to failure caused by the use of three-way valve actuators that do not meet the operating conditions is avoided.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A life testing system for a three-way valve actuator used in a data center CDU, characterized in that, The three-way valve actuator life testing system includes: a closed-loop test pipeline, a PLC controller, and a human-machine interface unit. The closed-loop test pipeline is equipped with a circulation pump (2) and a three-way valve (3). The output end of the circulation pump (2) is connected to the AB inlet end of the three-way valve (3). The A outlet end and B outlet end of the three-way valve (3) are connected to the input end of the circulation pump (2) after the first branch and the second branch are respectively connected. The A outlet of the three-way valve (3) is equipped with a fourth pressure sensor (10), and the B outlet of the three-way valve (3) is equipped with a fifth pressure sensor (11) and a second flow sensor (12) in sequence. The PLC controller is connected to the actuator (13) of the three-way valve (3) and is configured to control the actuator (13) to periodically select and switch between the A outlet and B outlet of the three-way valve (3), and record the number of actions of the actuator (13) and output it to the human-machine interaction unit. The PLC controller is also connected to the fourth pressure sensor (10), the fifth pressure sensor (11), and the second flow sensor (12) to complete the acquisition of corresponding sensor data and stop the counting of the number of actions of the actuator (13) when the acquired data triggers a preset threshold.

2. The three-way valve actuator life testing system as described in claim 1, characterized in that, The closed-loop test pipeline is also equipped with a first temperature sensor (6), which is located upstream of the circulating pump (2) and is used to monitor the temperature of the medium in the closed-loop test pipeline.

3. The three-way valve actuator life testing system as described in claim 2, characterized in that, The closed-loop test pipeline is also equipped with a cooling fan (4) to cool the medium inside the closed-loop test pipeline.

4. The three-way valve actuator life testing system as described in claim 3, characterized in that, The first temperature sensor (6) and the cooling fan (4) are respectively connected to the PLC controller; Furthermore, the cooling fan (4) is configured to operate when the PLC controller detects that the temperature information collected by the first temperature sensor (6) is greater than a preset value, and to stop operating when the temperature information collected by the first temperature sensor (6) is lower than a preset value.

5. The three-way valve actuator life testing system as described in claim 3, characterized in that, The cooling fan (4) is located downstream of the junction of the first branch and the second branch.

6. The three-way valve actuator life testing system as described in claim 5, characterized in that, The closed-loop test pipeline is also equipped with a first flow sensor (5), and the first flow sensor (5) is located downstream of the cooling fan (4) and upstream of the circulating pump (2).

7. The three-way valve actuator life testing system as described in claim 5, characterized in that, The closed-loop test pipeline is connected to a medium input pipeline. The connection node of the medium input pipeline is located downstream of the cooling fan (4) and upstream of the circulating pump (2). The medium input pipeline is equipped with a liquid injection ball valve (1).

8. The three-way valve actuator life testing system as described in claim 1, characterized in that, The input end of the circulating pump (2) is provided with a first pressure sensor (7), and the output end of the circulating pump (2) is provided with a second pressure sensor (8).

9. The three-way valve actuator life testing system as described in claim 1, characterized in that, The three-way valve (3) is also equipped with a third pressure sensor (9) at its AB inlet end.

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