Pipe assembly, central air conditioning system and method for detecting water flow direction in pipe body

Abstract

The application relates to a pipe assembly, a central air conditioning system and a method for detecting the water flow direction in a pipe body. The pipe assembly comprises a pipe body and a detection device. The pipe body is internally provided with a pipe cavity. The detection device comprises a support arranged in the pipe cavity, a conductive connecting sheet rotatably connected to the support, a first conductive member and a second conductive member, the first conductive member and the second conductive member being located on the two sides of the support along a first direction, the first direction being parallel to the axis of the water pipe, a first detection circuit and a second detection circuit, the first conductive member and the conductive connecting sheet being arranged in the first detection circuit, and the second conductive member and the conductive connecting sheet being arranged in the second detection circuit. The conductive connecting sheet is configured to be capable of being in contact with the first conductive member or the second conductive member under the action of water flow. When the conductive connecting sheet is in contact with the first conductive member, the first detection circuit is conducted through the conductive connecting sheet. When the conductive connecting sheet is in contact with the second conductive member, the second detection circuit is conducted through the conductive connecting sheet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of central air conditioning, in particular to a pipe assembly, a central air conditioning system and a method for detecting water flow direction in a pipe body. BACKGROUND

[0002] A plurality of water pipes are arranged in a chilled water central air conditioning system of a large data center. In different working conditions, the flow direction of water in the same water pipe is different. In order to improve the operation safety and efficiency of the air conditioner, the maintenance personnel sometimes need to know the water flow direction in some important water pipes in real time. However, since the water pipe usually adopts a fully sealed and opaque structure, it is difficult for the outside to observe the water flow direction in the water pipe. When an emergency situation occurs, the air conditioner emergency deployment may fail due to the inability to accurately determine the direction of the water flow.

[0003] Although some means can be used to detect the water flow direction in the water pipe in the prior art, such as ultrasonic detection means, the detection cost is high and it is difficult to promote because the detection means often rely on relatively expensive detection equipment. SUMMARY

[0004] Therefore, the pipe assembly, the central air conditioning system and the method for detecting the water flow direction in the pipe body are provided, which can detect the water flow direction in the water pipe and reduce the detection cost.

[0005] An embodiment of the first aspect of the present application provides a pipe assembly, which comprises a pipe body and a detection device. The pipe body is internally provided with a pipe cavity. The detection device comprises a support arranged in the pipe cavity, a conductive connecting piece rotatably connected to the support, a first conductive piece and a second conductive piece arranged in the pipe cavity, the first conductive piece and the second conductive piece being located on two sides of the support along a first direction, the first direction being parallel to the axis of the pipe body, a first detection circuit and a second detection circuit, the first conductive piece and the conductive connecting piece being arranged in the first detection circuit, and the second conductive piece and the conductive connecting piece being arranged in the second detection circuit. The conductive connecting piece is configured to be in contact with the first conductive piece or the second conductive piece under the action of water flow. When the conductive connecting piece is in contact with the first conductive piece, the first detection circuit is conducted through the conductive connecting piece. When the conductive connecting piece is in contact with the second conductive piece, the second detection circuit is conducted through the conductive connecting piece.

[0006] The pipe assembly in the embodiments of the present application is provided with a support, a first conductive piece and a second conductive piece in the lumen of the pipe body, wherein the first conductive piece and the second conductive piece are located on two sides of the support along a first direction, and the support is rotatably connected with a conductive connecting piece. When water flows through the pipe body, the conductive connecting piece will rotate under the driving of the water flow, and the rotating direction of the conductive connecting piece depends on the direction of the water flow. Specifically, when the direction of the water flow is consistent with the direction from the second conductive piece to the first conductive piece, the conductive connecting piece will rotate to the direction of the first conductive piece, so that the conductive connecting piece contacts the first conductive piece, at this time, the first detection circuit will be conducted through the conductive connecting piece. When the direction of the water flow is consistent with the direction from the first conductive piece to the second conductive piece, the conductive connecting piece will rotate to the direction of the second conductive piece, so that the conductive connecting piece contacts the second conductive piece, at this time, the second detection circuit will be conducted through the conductive connecting piece. Therefore, by comparing the current size in the first detection circuit and the second detection circuit, it can be determined which detection circuit is conducted through the conductive connecting piece at the current time, and then the direction of the water flow in the pipe body can be judged. In addition, the pipe assembly in the present application has a simple detection device structure, and compared with the special detection equipment in the related art, it has a lower cost, so the popularization difficulty is smaller.

[0007] In some embodiments, the conductive connecting piece is provided with a resistance element, when the conductive connecting piece contacts the first conductive piece, the current in the first detection circuit is equal to a preset current, and when the conductive connecting piece contacts the second conductive piece, the current in the second detection circuit is equal to the preset current.

[0008] In some embodiments, the first conductive piece and the second conductive piece are both fixed on the inner wall of the pipe body; the first conductive piece and the second conductive piece both extend along the radial direction of the pipe body; the support is a columnar structure fixed on the inner wall of the pipe body, and the support extends along the radial direction of the pipe body; and / or, the conductive connecting piece is sleeved on the columnar structure, and the conductive connecting piece can rotate around the columnar structure.

[0009] In some embodiments, the length of the first conductive piece and the length of the second conductive piece are both greater than the length of the support.

[0010] In some embodiments, the material of the first conductive piece and the second conductive piece is metal; and / or, the material of the support is metal.

[0011] In some embodiments, the conductive connecting piece is provided with a first metal needle and a second metal needle, the first metal needle and the second metal needle are arranged on different sides of the conductive connecting piece, the conductive connecting piece is configured to be capable of contacting the first conductive piece through the first metal needle, and the conductive connecting piece is further configured to be capable of contacting the second conductive piece through the second metal needle; the first conductive piece is provided with a first groove for cooperating with the first metal needle; and the second conductive piece is provided with a second groove for cooperating with the second metal needle.

[0012] In some embodiments, the number of the first metal needles is multiple, the first conductive piece is provided with a first contact plane for contacting the multiple first metal needles, and the first contact plane is provided with multiple first grooves; and the number of the second metal needles is multiple, the second conductive piece is provided with a second contact plane for contacting the multiple second metal needles, and the second contact plane is provided with multiple second grooves.

[0013] In some embodiments, the length of the first metal needle increases from the end close to the support to the end away from the support; and the length of the second metal needle increases from the end close to the support to the end away from the support.

[0014] In some embodiments, the conductive connecting piece is further provided with a first brush and a second brush; the first brush covers the first metal needle, and the second brush covers the second metal needle.

[0015] In some embodiments, the first brush includes multiple first bristles, the length of the first bristle increases from the end close to the support to the end away from the support; and the second brush includes multiple second bristles, the length of the second bristle increases from the end close to the support to the end away from the support.

[0016] In some embodiments, the tube assembly further includes a detection interface, the detection interface is provided with a first detection point and a second detection point, the first detection point is arranged in the first detection circuit, and the second detection point is arranged in the second detection circuit.

[0017] In some embodiments, the first detection circuit is further provided with a first indicator, and the second detection circuit is further provided with a second indicator.

[0018] In some embodiments, the surface of the first conductive piece and the second conductive piece is provided with a corrosion-resistant conductive layer.

[0019] The embodiment of the second aspect of the application provides a central air conditioning system, which comprises the pipe assembly in any of the above embodiments.

[0020] The embodiment of the third aspect of the application provides a method for detecting the direction of water flow in a pipe body, which comprises the following steps:

[0021] A support, a first conductive member and a second conductive member are arranged on the inner wall of the pipe body, the support is rotatably connected with a conductive connecting piece, the first conductive member and the second conductive member are located on the two sides of the support along a first direction, and the first direction is parallel to the axis of the pipe body;

[0022] The first conductive member and the conductive connecting piece are connected to a first detection circuit, and the second conductive member and the conductive connecting piece are connected to a second detection circuit;

[0023] In the case that water flows through the pipe body, the flowing direction of the water flow is determined according to the current size in the first detection circuit and the second detection circuit. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a front view of the pipe assembly of an embodiment of the application;

[0025] Figure 2 It is a top view of the pipe assembly of an embodiment of the application (omitting the valve);

[0026] Figure 3 It is a front view of the pipe assembly of an embodiment of the application in another state;

[0027] Figure 4 It is a top view of the pipe assembly of an embodiment of the application in another state (omitting the valve);

[0028] Figure 5 It is a structural schematic view of the conductive connecting piece of another embodiment of the application;

[0029] Figure 6 It is a schematic view of the pipe assembly of another embodiment of the application;

[0030] Figure 7 It is a flowchart of the method for detecting the direction of water flow in the pipe body of an embodiment of the application.

[0031] REFERENCE NUMERALS:

[0032] 10, pipe assembly;

[0033] 100, pipe body; 101, pipe cavity;

[0034] 210, support; 220, conductive connecting piece; 221, first metal needle; 222, second metal needle; 223, first brush; 224, second brush;

[0035] 230, first conductive member; 231, first contact plane; 240, second conductive member; 241, second contact plane; 250, first detection circuit; 260, second detection circuit;

[0036] 300, detection interface. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details, and the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0039] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0040] In the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connection", "fixed", and like terms should be construed broadly and, for example, can be a fixed connection, or a detachable connection, or integral; can be a mechanical connection, or an electrical connection; can be a direct connection, or an indirect connection via an intermediate medium; can be a communication inside two elements, or an interaction relationship between two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0043] A plurality of water pipes are provided in the chilled water central air conditioning system of a large data center. Under different working conditions, the flow direction of water flow in the same water pipe is different. In order to improve the safety and efficiency of air conditioning operation, maintenance personnel sometimes need to know the water flow direction in some important water pipes in real time, but due to the fact that the water pipe usually adopts a fully sealed and opaque structure, it is difficult for the outside to observe the water flow direction in the water pipe. When an emergency situation occurs, it is likely that the air conditioning emergency deployment will fail due to the inability to accurately determine the direction of the water flow.

[0044] Although there are some means in the prior art to detect the water flow direction in the water pipe, such as ultrasonic detection means, but often rely on relatively expensive detection equipment, the detection cost is high, and it is difficult to promote.

[0045] Based on the above problems, the first aspect of the embodiments of the present application proposes a pipe assembly, which can detect the water flow direction in the pipe body and reduce the detection cost.

[0046] AsFigure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in FIGS. 1-4, the pipe assembly 10 in the embodiments of the present application includes a pipe body 100 and a detection device. The pipe body 100 is internally provided with a pipe cavity 101. The detection device includes a support 210, a conductive connecting piece 220, a first conductive piece 230, a second conductive piece 240, a first detection circuit 250, and a second detection circuit 260. The support 210 is arranged in the pipe cavity 101. The conductive connecting piece 220 is rotatably connected to the support 210. The first conductive piece 230 and the second conductive piece 240 are both arranged in the pipe cavity 101. The first conductive piece 230 and the second conductive piece 240 are located on two sides of the support 210 along a first direction. The first direction is parallel to the axis of the pipe body 100. The first conductive piece 230 and the conductive connecting piece 220 are arranged in the first detection circuit 250. The second conductive piece 240 and the conductive connecting piece 220 are arranged in the second detection circuit 260. The conductive connecting piece 220 is configured to be capable of being in contact with the first conductive piece 230 or the second conductive piece 240 under the action of water flow. When the conductive connecting piece 220 is in contact with the first conductive piece 230, the first detection circuit 250 is turned on through the conductive connecting piece 220. When the conductive connecting piece 220 is in contact with the second conductive piece 240, the second detection circuit 260 is turned on through the conductive connecting piece 220.

[0047] It should be noted that the pipe body 100 can be a water pipe or a main pipe body in a water pipe connector. The water pipe connector is a connecting structure connected between two adjacent water pipes, for connecting the adjacent water pipes to communicate with each other. When the pipe body 100 is a main pipe body in a water pipe connector, the existing equipment can be conveniently modified, and only the water pipe connector needs to be replaced.

[0048] The pipe assembly 10 in the embodiments of the present application is provided with a support 210, a first conductive member 230 and a second conductive member 240 in the pipe cavity 101 of the pipe body 100, wherein the first conductive member 230 and the second conductive member 240 are located on two sides of the support 210 in the first direction, and the support 210 is rotatably connected with a conductive connecting piece 220. When water flows through the pipe body 100, the conductive connecting piece 220 will rotate under the driving of the water flow, and the rotating direction of the conductive connecting piece 220 depends on the direction of the water flow. Specifically, when the direction of the water flow is consistent with the direction indicated by the second conductive member 240 to the first conductive member 230, the conductive connecting piece 220 will rotate to the direction of the first conductive member 230, so that the conductive connecting piece 220 is in contact with the first conductive member 230, at this time, the first detection circuit 250 will be conducted through the conductive connecting piece 220. When the direction of the water flow is consistent with the direction indicated by the first conductive member 230 to the second conductive member 240, the conductive connecting piece 220 will rotate to the direction of the second conductive member 240, so that the conductive connecting piece 220 is in contact with the second conductive member 240, at this time, the second detection circuit 260 will be conducted through the conductive connecting piece 220. Therefore, by comparing the current size in the first detection circuit 250 and the second detection circuit 260, it can be determined which detection circuit is conducted through the conductive connecting piece 220 at the current time, and then the direction of the water flow in the pipe body 100 can be determined. In addition, the pipe assembly 10 in the present application has a simple detection device structure, and compared with the special detection equipment in the related art, it has a lower cost, and therefore, it has a smaller popularization difficulty.

[0049] It can be understood that when impurities exist in the water, the water may also have conductivity to make the first detection circuit 250 and the second detection circuit 260 conductive. However, the detection circuit is only conducted through the conductivity of the water, and the current size in the detection circuit in the two cases is significantly different, so by measuring the current in the first detection circuit 250 and the second detection circuit 260, it can be determined which detection circuit is conducted through the conductive connecting piece 220 at the current time.

[0050] In some embodiments, the conductive connecting piece 220 is provided with a resistance element (not shown in the figure), when the conductive connecting piece 220 is in contact with the first conductive member 230, the current in the first detection circuit 250 is equal to a preset current, when the conductive connecting piece 220 is in contact with the second conductive member 240, the current in the second detection circuit 260 is equal to the preset current.

[0051] The electrically conductive connecting piece 220 is provided with a resistance element, which can limit the current, so that when the detection circuit is turned on through the electrically conductive connecting piece 220, the current in the detection circuit will not be too large, thereby facilitating the protection of the detection circuit. In addition, in the case of setting the resistance element, the current in the detection circuit that is turned on through the electrically conductive connecting piece 220 is equal to the preset current, and this can be more easily determined by taking the preset circuit as a reference.

[0052] In some embodiments, the first electrically conductive part 230 and the second electrically conductive part 240 are both fixed on the inner wall of the pipe body 100, and the first electrically conductive part 230 and the second electrically conductive part 240 both extend in the radial direction of the pipe body 100. The support 210 is a columnar structure fixed on the inner wall of the pipe body 100, and the support 210 extends in the radial direction of the pipe body 100. And / or, the electrically conductive connecting piece 220 is sleeved on the columnar structure, and the electrically conductive connecting piece 220 can rotate around the columnar structure.

[0053] In this embodiment, the first electrically conductive part 230, the second electrically conductive part 240 and the support 210 all extend in the radial direction of the pipe body 100, so as to facilitate the electrically conductive connecting piece 220 to be away from the pipe wall of the pipe body 100, so as to facilitate the electrically conductive connecting piece 220 to have sufficient rotating space, thereby avoiding the electrically conductive connecting piece 220 from interfering with the pipe wall when rotating.

[0054] Further, the length of the first electrically conductive part 230 and the length of the second electrically conductive part 240 are both greater than the length of the support 210. In this way, it can be ensured that the position of the electrically conductive connecting piece 220 is within the length range of the first electrically conductive part 230 and the second electrically conductive part 240, thereby ensuring that the electrically conductive connecting piece 220 can be in contact with the first electrically conductive part 230 or the second electrically conductive part 240 after rotating.

[0055] In some embodiments, the material of the first electrically conductive part 230 and the second electrically conductive part 240 is metal, and / or the material of the support 210 is metal.

[0056] The material of the first electrically conductive part 230 and the second electrically conductive part 240 is metal, so that the first electrically conductive part 230 and the second electrically conductive part 240 have good electrical conductivity.

[0057] In addition, it can be understood that the first detection circuit 250 and the second detection circuit 260 are both provided with wires, the wires in the first detection circuit 250 are used to connect the first conductive part 230, the conductive connecting piece 220 and the power supply, and the wires in the second detection circuit 260 are used to connect the second conductive part 240, the conductive connecting piece 220 and the power supply. In the case that the material of the support 210 is metal, the support 210 also has conductivity, so that the wires are connected to the support 210 to realize the electrical connection with the conductive connecting piece 220. Since the conductive connecting piece 220 is a movable structure and the support 210 is a fixed structure, connecting the wires to the support 210 is more conducive to improving the working stability.

[0058] In some embodiments, as shown in Figure 5 、 Figure 6 The conductive connecting piece 220 is provided with a first metal needle 221 and a second metal needle 222, the first metal needle 221 and the second metal needle 222 are arranged on different sides of the conductive connecting piece 220, the conductive connecting piece 220 is configured to be capable of contacting the first conductive part 230 through the first metal needle 221, and the conductive connecting piece 220 is also configured to be capable of contacting the second conductive part 240 through the second metal needle 222. The first conductive part 230 is provided with a first groove for cooperating with the first metal needle 221. The second conductive part 240 is provided with a second groove for cooperating with the second metal needle 222.

[0059] The first metal needle 221 is arranged on the conductive connecting piece 220, and the first groove is arranged on the first conductive part 230. When the conductive connecting piece 220 rotates in the direction of the first conductive part 230 under the action of the water flow, the first metal needle 221 on the conductive connecting piece 220 will form a clamping state with the first groove on the first conductive part 230. In this way, it is beneficial to keep the conductive connecting piece 220 and the first conductive part 230 in contact, thereby prolonging the conduction time of the first detection circuit 250 and avoiding frequent disconnection.

[0060] The second metal needle 222 is arranged on the conductive connecting piece 220, and the second groove is arranged on the second conductive part 240. When the conductive connecting piece 220 rotates in the direction of the second conductive part 240 under the action of the water flow, the second metal needle 222 on the conductive connecting piece 220 will form a clamping state with the second groove on the second conductive part 240. In this way, it is beneficial to keep the conductive connecting piece 220 and the second conductive part 240 in contact, thereby prolonging the conduction time of the second detection circuit 260 and avoiding frequent disconnection.

[0061] It can be understood that the first metal needle 221 and the first groove are arranged to enhance the contact effect between the conductive connecting piece 220 and the first conductive piece 230, so that they cannot be easily separated. But under the impact of the reverse water flow, the conductive connecting piece 220 and the first conductive piece 230 can still be separated.

[0062] Similarly, the second metal needle 222 and the second groove are arranged to enhance the contact effect between the conductive connecting piece 220 and the second conductive piece 240, so that they cannot be easily separated. But under the impact of the reverse water flow, the conductive connecting piece 220 and the second conductive piece 240 can still be separated.

[0063] Further, the number of the first metal needle 221 is multiple, and the first conductive piece 230 is provided with a first contact plane 231 for contacting the multiple first metal needles 221, and the first contact plane 231 is provided with multiple first grooves (not shown in the figure). The number of the second metal needle 222 is multiple, and the second conductive piece 240 is provided with a second contact plane 241 for contacting the multiple second metal needles 222, and the second contact plane 241 is provided with multiple second grooves (not shown in the figure).

[0064] The number of the first metal needle 221 is multiple, and the first contact plane 231 of the first conductive piece 230 is provided with multiple first grooves, so as to further improve the contact effect between the conductive connecting piece 220 and the first conductive piece 230, so that they cannot be easily separated.

[0065] The number of the second metal needle 222 is multiple, and the second contact plane 241 of the second conductive piece 240 is provided with multiple second grooves, so as to further improve the contact effect between the conductive connecting piece 220 and the second conductive piece 240, so that they cannot be easily separated.

[0066] Further, from the end close to the support 210 to the end away from the support 210, the length of the first metal needle 221 increases. From the end close to the support 210 to the end away from the support 210, the length of the second metal needle 222 increases. In this way, the first metal needle 221 at different positions can be in contact with the first contact plane 231 on the first conductive piece 230 at the same time, and the second metal needle 222 at different positions can be in contact with the second contact plane 241 on the second conductive piece 240 at the same time.

[0067] Furthermore, the conductive connecting piece 220 is also provided with a first brush 223 and a second brush 224. The first brush 223 covers the first metal needle 221, and the second brush 224 covers the second metal needle 222. This arrangement allows the first brush 223 to scrape away scale buildup on the first conductive element 230 caused by prolonged immersion in water before the first metal needle 221 contacts the first conductive element 230. Similarly, the second brush 224 can scrape away scale buildup on the second conductive element 240 caused by prolonged immersion in water before the second metal needle 222 contacts the second conductive element 240.

[0068] Specifically, the first brush 223 includes multiple first bristles, with the length of the first bristles increasing from the end near the support member 210 to the end away from the support member 210. The second brush 224 includes multiple second bristles, with the length of the second bristles increasing from the end near the support member 210 to the end away from the support member 210. This arrangement ensures that the first bristles at different positions can contact the first contact surface 231 to effectively perform a scraping effect, and that the second bristles at different positions can contact the second contact surface 241 to effectively perform a scraping effect.

[0069] In some embodiments, such as Figures 1 to 4 As shown, the tube assembly 10 also includes a detection interface 300, which has a first detection point (not shown) and a second detection point (not shown). The first detection point is located in the first detection circuit 250, and the second detection point is located in the second detection circuit 260. The current in the first detection circuit 250 can be detected through the first detection point, and the current in the second detection circuit 260 can be detected through the second detection point. It is understood that maintenance personnel can use testing tools such as ammeters during testing.

[0070] Alternatively, the second detection point can be connected to the control circuit board, and then the control circuit board can be connected to the monitoring equipment of the central air conditioning system. In this way, maintenance personnel can obtain the current values ​​in the first detection circuit 250 and the second detection circuit 260 through the display interface of the detection equipment, or directly read the water flow direction information in the display interface.

[0071] In some embodiments, the water pipe assembly 10 further comprises a first indicator light (not shown in the figures) arranged in the first detection circuit 250 and a second indicator light (not shown in the figures) arranged in the second detection circuit 260. In this way, even if the first detection circuit 250 or the second detection circuit 260 is turned on due to the conductivity of water, the first detection circuit 250 and the second detection circuit 260 will not be short-circuited, and therefore, the arrangement of the first indicator light and the second indicator light can protect the first detection circuit 250 and the second detection circuit 260. In some embodiments, the surfaces of the first conductive member 230 and the second conductive member 240 are provided with a corrosion-resistant conductive layer. Since the first conductive member 230 and the second conductive member 240 are immersed in water for a long time, the corrosion-resistant conductive layer arranged on the surfaces of the first conductive member 230 and the second conductive member 240 can avoid corrosion caused by long-term immersion. Specifically, the corrosion-resistant conductive layer can be a coating layer formed by corrosion-resistant conductive paint, or a metal plating layer with good corrosion resistance, such as a ductile iron layer, a copper plating layer, etc.

[0072] Embodiments of the second aspect of the present application propose a central air conditioning system, which comprises the pipe assembly 10 in any of the above embodiments.

[0073] The central air conditioning system in the embodiments of the present application is provided with the support member 210, the first conductive member 230 and the second conductive member 240 in the pipe body 100 of the pipe assembly 10 therein, wherein the first conductive member 230 and the second conductive member 240 are located on the two sides of the support member 210 along the first direction, and the conductive connecting piece 220 is rotatably connected to the support member 210. When water flows through the pipe body 100, the conductive connecting piece 220 will rotate under the driving of the water flow, and the rotation direction of the conductive connecting piece 220 depends on the direction of the water flow. Specifically, when the direction of the water flow is consistent with the direction pointed by the second conductive member 240 to the first conductive member 230, the conductive connecting piece 220 will rotate to the direction of the first conductive member 230, so that the conductive connecting piece 220 contacts the first conductive member 230, at this time, the first detection circuit 250 will be turned on and the current in the first detection circuit 250 is equal to the preset current. When the direction of the water flow is consistent with the direction pointed by the first conductive member 230 to the second conductive member 240, the conductive connecting piece 220 will rotate to the direction of the second conductive member 240, so that the conductive connecting piece 220 contacts the second conductive member 240, at this time, the second detection circuit 260 will be turned on and the current in the second detection circuit 260 is equal to the preset current. Therefore, the direction of the water flow in the pipe body 100 at the current time can be determined by the current size in the first detection circuit 250 and the second detection circuit 260. In addition, the detection device adopted by the pipe assembly 10 in the present application has a simple structure, and compared with the special detection equipment in the related art, has a lower cost, and therefore, has a smaller popularization difficulty.

[0074] The embodiment of the third aspect of the present application provides a method for detecting the direction of water flow in a pipe body, as shown in the figure, the method comprises the following steps: Figure 7

[0075] Step S101: a support 210, a first conductive piece 230 and a second conductive piece 240 are arranged on the inner wall of the pipe body 100, the support 210 is rotatably connected with a conductive connecting piece 220, the first conductive piece 230 and the second conductive piece 240 are located on the two sides of the support 210 along a first direction, and the first direction is parallel to the axis of the pipe body 100;

[0076] Step S102: the first conductive piece 230 and the conductive connecting piece 220 are connected to a first detection circuit 250, and the second conductive piece 240 and the conductive connecting piece 220 are connected to a second detection circuit 260;

[0077] Step S103: in the case that water flows through the pipe body 100, the flowing direction of the water flow is determined according to the current size in the first detection circuit 250 and the second detection circuit 260.

[0078] The method for detecting the direction of water flow in the pipe body in the embodiment of the present application involves a relatively simple structure, does not need to use a relatively expensive special detection device, is easy to implement and has low cost, and has small popularization difficulty.

[0079] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that the combinations are within the scope of the present application.

[0080] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as the limitation on the patent application scope. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.​

Claims

1. A pipe assembly, characterized in that, It includes a tube body and a detection device, wherein the tube body has an internal cavity, and the detection device includes: A support member is disposed within the cavity; A conductive connecting piece is rotatably connected to the support member; A first conductive element and a second conductive element are disposed in the cavity. The first conductive element and the second conductive element are located on both sides of the support member along a first direction, which is parallel to the axis of the tube body. A first detection circuit and a second detection circuit, wherein the first conductive element and the conductive connecting piece are disposed in the first detection circuit, and the second conductive element and the conductive connecting piece are disposed in the second detection circuit; The conductive connecting piece is configured to contact a first conductive element or a second conductive element under the action of water flow. When the conductive connecting piece contacts the first conductive element, the first detection circuit is turned on through the conductive connecting piece. When the conductive connecting piece contacts the second conductive element, the second detection circuit is turned on through the conductive connecting piece. The conductive connecting piece is provided with a first metal needle and a second metal needle, the first metal needle and the second metal needle are provided on different sides of the conductive connecting piece, the conductive connecting piece is configured to be able to contact the first conductive element through the first metal needle, and the conductive connecting piece is also configured to be able to contact the second conductive element through the second metal needle; The first conductive element is provided with a first groove for engaging with the first metal needle. The second conductive element is provided with a second groove for engaging with the second metal needle.

2. The pipe assembly according to claim 1, characterized in that, The conductive connecting piece is provided with a resistive element. When the conductive connecting piece is in contact with the first conductive element, the current in the first detection circuit is equal to a preset current. When the conductive connecting piece is in contact with the second conductive element, the current in the second detection circuit is equal to a preset current.

3. The pipe assembly according to claim 1, characterized in that, Both the first conductive element and the second conductive element are fixed on the inner wall of the tube body; Both the first conductive element and the second conductive element extend radially along the tube body; The support member is a columnar structure fixed to the inner wall of the tube body, and the support member extends radially along the tube body; And / or, the conductive connecting piece is sleeved on the columnar structure, and the conductive connecting piece is rotatable around the columnar structure.

4. The pipe assembly according to claim 3, characterized in that, The lengths of both the first conductive element and the second conductive element are greater than the length of the support element.

5. The pipe assembly according to claim 1, characterized in that, The first conductive element and the second conductive element are made of metal; And / or, the support member is made of metal.

6. The pipe assembly according to claim 1, characterized in that, The number of the first metal needles is multiple, and the first conductive element is provided with a first contact plane for contacting the multiple first metal needles. The first contact plane is provided with multiple first grooves. The number of the second metal needles is multiple, and the second conductive element is provided with a second contact plane for contacting the multiple second metal needles, and the second contact plane is provided with multiple second grooves.

7. The pipe assembly according to claim 6, characterized in that, The length of the first metal needle increases from the end closest to the support member to the end furthest from the support member; the length of the second metal needle increases from the end closest to the support member to the end furthest from the support member.

8. The pipe assembly according to claim 6, characterized in that, The conductive connecting piece is also provided with a first brush and a second brush. The first brush covers the first metal needle, and the second brush covers the second metal needle.

9. The pipe assembly according to claim 8, characterized in that, The first brush includes multiple first bristles, with the length of the first bristles increasing from one end near the support to the other end away from the support. The second brush includes multiple second bristles, with the length of the second bristles increasing from one end near the support to the other end away from the support.

10. The pipe assembly according to claim 1, characterized in that, It also includes a detection interface, which has a first detection point and a second detection point. The first detection point is located in the first detection circuit, and the second detection point is located in the second detection circuit. It also includes a first indicator light located in the first detection circuit and a second indicator light located in the second detection circuit.

11. The pipe assembly according to claim 1, characterized in that, The surfaces of the first conductive element and the second conductive element are provided with an anti-corrosion conductive layer.

12. A central air conditioning system, characterized in that, Includes the tube assembly as described in any one of claims 1 to 11.

13. A method for detecting the direction of water flow within a pipe, characterized in that, Using the pipe assembly as described in any one of claims 1 to 11, the method for detecting the water flow direction within the pipe body includes: A support, a first conductive element, and a second conductive element are provided on the inner wall of the tube. The support is rotatably connected to a conductive connecting piece. The first conductive element and the second conductive element are located on both sides of the support along a first direction, which is parallel to the axis of the tube. The first conductive element and the conductive connecting piece are connected to the first detection circuit, and the second conductive element and the conductive connecting piece are connected to the second detection circuit; When water flows through the pipe, the direction of water flow is determined based on the magnitude of the current in the first detection circuit and the second detection circuit.

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