Liquid leakage detection device, water-cooling radiator and computer

Abstract

The utility model discloses a liquid leakage detection device, a water cooling radiator and a computer, the liquid leakage detection device comprises a pressure cylinder, a movable member and a detection member, the pressure cylinder is provided with a cavity and a pipe interface communicated with the cavity; the movable part is installed in the cavity, the cavity is divided into a hydraulic cavity and a negative pressure cavity by the detection part, and the hydraulic cavity is communicated with the pipe connector; the detection piece is installed on the cavity wall of the negative pressure cavity. By means of the scheme, comprehensive detection can be achieved, and the liquid leakage detection device can be repeatedly used. In addition, the liquid leakage detection device is high in detection sensitivity, due to the fact that negative pressure exists in the water-cooling circulation pipeline, no liquid leakage occurs at a tiny leakage opening, and due to the fact that negative pressure exists in the water-cooling circulation pipeline, acting force on the pipeline is small when cooling liquid is heated or frozen and expands, and therefore the risk of liquid leakage can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid leakage detection, in particular to a liquid leakage detection device, a water-cooled radiator and a computer. Background Art

[0002] At present, some computers on the market adopt water-cooled radiator models. Among them, some water-cooled radiators are provided with some sealing structures at the pipe interfaces to prevent water leakage, and are also provided with a liquid leakage detection device. A paint that changes color when encountering water is provided at the easily leaked parts. When liquid leaks at these parts, a liquid of a certain color can be seen flowing out, and users can judge whether there is liquid leakage based on this.

[0003] However, the limitations of this solution are relatively large, and it is necessary to set paints at each easily leaked part; moreover, for the situation where leaks occur in other parts, the above solution fails, and users will suffer huge losses due to the failure to detect the liquid leakage problem in time. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a liquid leakage detection device, a water-cooled radiator and a computer, aiming to improve the detection comprehensiveness of the liquid leakage detection device.

[0005] To achieve the above purpose, the utility model proposes a liquid leakage detection device applied to a water-cooled radiator of a computer, including:

[0006] A pressure cylinder, the pressure cylinder is provided with a cavity and a pipe interface communicated with the cavity;

[0007] A movable part, installed in the cavity, the detection part divides the cavity into a hydraulic cavity and a negative pressure cavity, and the hydraulic cavity is communicated with the pipe interface;

[0008] A detection part, the detection part is installed in the negative pressure cavity to detect the air pressure or the change of the negative pressure cavity space in the negative pressure cavity.

[0009] In some embodiments of the utility model, the movable part is a first piston, and the first piston is slidably installed in the cavity.

[0010] In some embodiments of the utility model, the pressure cylinder includes a cylinder body and a cylinder head structure, the cavity is formed in the cylinder body, one end of the cavity far away from the pipe interface is open, the cylinder head structure is detachably installed at the opening, the detection part is installed on the inner side of the cylinder head structure, and the negative pressure cavity is formed between the movable part and the cylinder head structure.

[0011] In some embodiments of the utility model, the cylinder head structure includes a fixing part and a second piston, the second piston is connected to the fixing part, the fixing part is fixed at the opening, and the detection part is installed on the inner side of the second piston.

[0012] In some embodiments of the present utility model, the fixing member includes a cover plate and a latch rod. The cover plate is connected to one end of the second piston, and the latch rod is detachably connected to a surface of the cover plate facing away from the second piston (122). Both ends of the latch rod abut against and are limited by the opening edge of the cylinder block.

[0013] In some embodiments of the present utility model, two limiting notches are provided on the end face of the cylinder block at the opening, and both ends of the latch rod are respectively assembled in the limiting notches.

[0014] In some embodiments of the present utility model, a connecting column protrudes from one surface of the cover plate, and an assembly hole penetrates through the periphery of the connecting column in the radial direction. The latch rod passes through the assembly hole.

[0015] In some embodiments of the present utility model, a plurality of first through holes are provided in the cover plate, and a plurality of first threaded holes are correspondingly provided on the second piston. A screw member passes through one of the first through holes and is connected to one of the assembly holes.

[0016] In some embodiments of the present utility model, the liquid leakage detection device further includes a three-way pipe, and one pipe orifice of the three-way pipe is connected to the pipe interface.

[0017] In some embodiments of the present utility model, the three-way pipe includes a communicating pipe portion and a detection pipe portion. One end of the detection pipe portion is connected to the peripheral wall of the communicating pipe portion, and the inner diameter of the detection pipe portion near one end of the communicating pipe portion is smaller than the inner diameter of the communicating pipe portion.

[0018] The present utility model further provides a water-cooled radiator, including the above-mentioned liquid leakage detection device, and the liquid leakage detection device includes:

[0019] A pressure cylinder provided with a cavity and a pipe interface communicating with the cavity;

[0020] A movable member installed in the cavity. The detection member divides the cavity into a hydraulic cavity and a negative pressure cavity, and the hydraulic cavity communicates with the pipe interface;

[0021] A detection member installed in the negative pressure cavity to detect the air pressure or the change in the space of the negative pressure cavity.

[0022] The present utility model further provides a computer, including the above-mentioned water-cooled radiator.

[0023] In the technical solution of the present utility model, the pipe interface of the liquid leakage detection device is connected to the water cooling circulation pipeline, so that the water cooling liquid can enter the hydraulic cavity. When there is no liquid leakage, the pressure in the hydraulic cavity is balanced with the air pressure in the negative pressure cavity, and the moving part does not move or deform. The volume of the negative pressure cavity remains unchanged, and the air pressure detected by the detection part remains unchanged. When there is a liquid leakage, gas enters the hydraulic cavity, and the pressure is close to the atmospheric pressure. The moving part moves or deforms under the action of the pressure difference, causing the volume of the negative pressure cavity to shrink, and the air pressure detected by the detection part increases. The detection part can be connected to a computer control system to send the detection signal to the control system. After receiving the detection signal, the control system can prompt the user of the liquid leakage problem through devices such as a display or a speaker.

[0024] Through the above solution, no matter which part of the water cooling circulation pipeline has a liquid leakage problem, the liquid leakage detection device can detect it and give a timely feedback to achieve comprehensive detection. Moreover, after the liquid leakage problem of the water cooling circulation pipeline is solved, the moving part is reset, and the pressure in the negative pressure cavity returns to the initial state, so that the liquid leakage detection device can be reused. In addition, the liquid leakage detection device has high detection sensitivity. Even if the leakage opening in the water circulation pipeline is very small, it will cause the pressure inside and outside the water circulation pipeline to tend to the atmospheric pressure. The pressure in the hydraulic cavity is higher than that in the negative pressure cavity in a short time, which will cause the moving part to deform or move, resulting in the shrinkage of the volume of the negative pressure cavity and the increase of the air pressure detected by the detection part. Since the inside of the water cooling circulation pipeline is in a negative pressure state, there will be no liquid leakage at the small leakage opening. It is also because the inside of the water cooling circulation pipeline is in a negative pressure state that when the coolant expands due to heating or freezing, the force on the pipeline is small, thus effectively reducing the risk of liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 It is a schematic structural diagram of an embodiment of the liquid leakage detection device provided by the present utility model;

[0027] Figure 2 It is a cross-sectional view of an embodiment of the liquid leakage detection device provided by the present utility model;

[0028] Figure 3 It is an exploded view of an embodiment of the liquid leakage detection device provided by the present utility model;

[0029] Figure 4 It is an exploded view of another embodiment of the liquid leakage detection device provided by the present utility model;

[0030] Figure 5 Cross-sectional view of another embodiment of the liquid leakage detection device provided by the present utility model;

[0031] Figure 6 Cross-sectional view of still another embodiment of the liquid leakage detection device provided by the present utility model;

[0032] Figure 7 Exploded view of a part of the structure of still another embodiment of the liquid leakage detection device provided by the present utility model;

[0033] Figure 8 Exploded view of a part of the structure of still another embodiment of the liquid leakage detection device provided by the present utility model from another perspective.

[0034] Explanation of the reference numerals in the drawings:

[0035] 100, liquid leakage detection device; 10, pressure cylinder; 101, cavity; 1011, hydraulic cavity; 1012, negative pressure cavity; 102, pipe interface; 11, cylinder body; 111, opening; 112, limit notch; 12, cylinder head structure; 121, fixing member; 1211, cover plate; 1212, latch rod; 1213, connecting column; 1214, assembly hole; 1216, first through hole; 122, second piston; 1221, first threaded hole; 13, cover body; 14, mounting seat; 141, sealing structure; 142, positioning notch; 143, positioning rib; 144, second through hole; 145, connecting ring; 16, pressing ring; 161, positioning protrusion; 162, stepped surface; 163, second threaded hole; 20, movable member; 21, first piston; 22, negative pressure bladder; 221, flange; 30, detecting member; 40, tee pipe; 41, communicating pipe portion; 42, detecting pipe portion.

[0036] The realization, functional features and advantages of the object of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] The present utility model provides a liquid leakage detection device 100 for detecting whether there is liquid leakage in the CPU water cooling system of a computer. The liquid leakage detection device 100 includes a pressure cylinder 10, a movable member 20, and a detection member 30. Among them, the pressure cylinder 10 is provided with a cavity 101 and a pipe interface 102 communicating with the cavity 101; the movable member 20 is installed in the cavity 101, and the detection member divides the cavity 101 into a hydraulic cavity 1011 and a negative pressure cavity 1012, and the hydraulic cavity 1011 communicates with the pipe interface 102; the detection member 30 is installed in the negative pressure cavity 1012 to detect the air pressure in the negative pressure cavity 1012.

[0041] The placement position of the liquid leakage detection device 100 only needs to ensure that the device can be connected to the water circuit in the water cooling system and achieve sealing. It can be placed above the water block in the water cooling system, arranged between the water pipes in the system, or in the water cooling radiator in the system. The placement position of the liquid leakage detection device 100 is set according to specific circumstances and is not limited herein.

[0042] In the technical solution of the present utility model, the pipe interface 102 of the liquid leakage detection device 100 is connected to the water cooling circulation pipeline, so that the water cooling liquid can enter the hydraulic cavity 1011. When there is no liquid leakage, the pressure in the hydraulic cavity 1011 is balanced with the air pressure in the negative pressure cavity 1012, and the movable part 20 does not move or deform. The space size of the negative pressure cavity 1012 remains unchanged, and the air pressure detected by the detection part 30 remains unchanged. When there is a liquid leakage, gas is mixed into the hydraulic cavity 1011, and the pressure is close to the atmospheric pressure. The movable part 20 moves or deforms under the action of the pressure difference, so that the space of the negative pressure cavity 1012 shrinks, and the air pressure detected by the detection part 30 increases. The detection part 30 can be connected to a computer control system to send the detection signal to the control system. After receiving the detection signal, the control system can prompt the user of the liquid leakage problem through devices such as a display or a speaker.

[0043] Through the above solution, no matter which part of the water cooling circulation pipeline has a liquid leakage problem, the liquid leakage detection device 100 can detect it and give a timely feedback to achieve comprehensive detection. Moreover, after the liquid leakage problem of the water cooling circulation pipeline is solved, the movable part 20 is reset, and the pressure in the negative pressure cavity 1012 returns to the initial state, so that the liquid leakage detection device 100 can be reused. In addition, the liquid leakage detection device 100 has high detection sensitivity. Even if the leakage port in the water circulation pipeline is very small, it will cause the pressure inside and outside the water circulation pipeline to tend to the atmospheric pressure. The pressure in the hydraulic cavity 1011 is higher than that in the negative pressure cavity 1012 in a short time, which will cause the movable part 20 to deform or move, so that the space of the negative pressure cavity 1012 shrinks, and the air pressure detected by the detection part 30 increases. And because the water cooling circulation pipeline is in a negative pressure state, there will be no liquid leakage at the tiny leakage port. It is also because the water cooling circulation pipeline is in a negative pressure state that when the coolant is heated or freezes and expands, the force on the pipeline is small, thus effectively reducing the risk of liquid leakage.

[0044] The above pressure cylinder 10 is made of a rigid material and is not easily deformed under pressure. Generally, it is made of a metal material. Of course, it can also be made of materials such as plastic and ceramic.

[0045] The types of the above-mentioned detection component 30 are diverse. For example, the detection component is a pressure sensor. Specifically, the detection component 30 is a capacitive detection component 30: the pressure is measured by detecting the capacitance change caused by the diaphragm between the capacitor plates being pressed and bent. Another example is that the detection component 30 is an inductive detection component 30. When pressed, the diaphragm connected to the magnetic core in the sensor generates a small deflection, causing the magnetic core to move linearly, thereby changing the induced current and converting it into an electrical signal. Still another example is that the detection component 30 is a piezoelectric detection component 30: when an external pressure acts on quartz or ceramic materials, these materials generate variable charges proportional to the amount of compression. The detection component 30 can also be a Hall component, including a Hall element and a magnetic element. The magnetic element is installed on the movable member 20, and the Hall element is installed on the wall of the negative pressure chamber 1012. When the movable member 20 moves, it will drive the magnetic element, and the Hall element generates a Hall voltage. According to the change of the Hall voltage, the moving distance of the movable member 20 and the change range of the space of the negative pressure chamber 1012 can be judged. The detection component 30 can also be a ranging sensor, specifically, it can be an ultrasonic ranging sensor or an optoelectronic sensor. Taking the optoelectronic sensor as an example, the transmitting end of the optoelectronic sensor emits an optical signal to the movable member 20. After the optical signal is reflected by the surface of the movable member 20, it is received by the receiving end. By calculating the time difference between transmission and reception, the distance between the movable member 20 and the sensor can be judged, so as to judge whether the movable member 20 moves and whether the space of the negative pressure chamber 1012 changes. There are many specific implementation manners of the detection component 30, which will not be listed one by one here.

[0046] There are various specific ways for the detection component 30 to be electrically connected to the external circuit. For example, the cylinder block 11 is provided with an electrical connection terminal on the wall of the negative pressure chamber 1012, and the electrical connection terminal extends outside the cylinder block 11, and the detection component 30 is connected to the electrical connection terminal. Another example is that the cylinder block 11 is provided with an installation hole on the wall of the negative pressure chamber 1012, and the detection component 30 is hermetically installed in the installation hole, with part located in the negative pressure chamber 1012 and part exposed outside the cylinder block 11. Still another example is that the cylinder block 11 has a plastic cylinder head, and the cylinder head is fixedly connected by melting the pins of the detection component 30, and the pins of the detection component 30 extend outside the cylinder head. There are many specific implementation manners of the detection component 30, which will not be listed one by one here.

[0047] The above-mentioned movable member 20 can change the size of the space of the negative pressure chamber 1012 by moving relative to the pressure cylinder 10 or deforming itself. In some embodiments of the present invention, the movable member 20 is a first piston 21, and the first piston 21 is slidably installed in the cavity 101. Thus, when a pressure difference is generated between the hydraulic chamber 1011 and the negative pressure chamber 1012, the first piston 21 moves, causing the space of the negative pressure chamber 1012 to increase or decrease.

[0048] Furthermore, in some embodiments of the present utility model, the pressure cylinder 10 includes a cylinder block 11 and a cylinder head structure 12. The cavity 101 is formed within the cylinder block 11. One end of the cavity 101 away from the pipe interface 102 is provided with an opening 111, and the cylinder head structure 12 is detachably installed at the opening 111. In this way, the first piston 21 can be installed into the cavity 101 through the opening 111 of the cylinder block 11.

[0049] The pipe interface 102 can be provided on the cylinder block 11 or on the cylinder head. Considering that the detection member 30 and the pipe interface 102 need to be relatively arranged on both sides of the first piston 21, and it is less convenient to install the detection member 30 on the bottom wall of the cylinder block 11. Therefore, in some embodiments of the present utility model, the detection member 30 is installed on the inner side of the cylinder head structure 12, and the negative pressure cavity 1012 is formed between the movable member 20 and the cylinder head structure 12. In this way, the detection member 30 can be directly installed on the inner side of the cylinder head structure 12, which is more convenient.

[0050] In some embodiments of the present utility model, an air extraction port is provided on the cavity wall of the negative pressure cavity 1012 of the cylinder head structure 12. By connecting the air extraction port to a vacuum generator, the air in the negative pressure cavity 1012 is extracted to form a negative pressure.

[0051] There are also various specific implementation manners of the above cylinder head structure 12. In some other embodiments of the present utility model, the cylinder head structure 12 includes a fixing member 121 and a second piston 122. The second piston 122 is connected to the fixing member 121, and the fixing member 121 is fixed at the opening 111. The detection member 30 is installed on the inner side of the second piston 122. In this way, during installation, the first piston 21 and the second piston 122 can be pushed into the cavity 101 together, and then the pipe interface 102 is docked with the water circulation pipeline, so that the coolant enters the hydraulic cavity 1011. The hydraulic cavity 1011 and the entire water circulation pipeline are in a sealed state. Then, the second piston 122 is pulled out. At this time, since the volume change of the liquid is relatively small compared to the volume of the gas, the first piston 21 will only move slightly in the direction close to the second piston 122 due to the pressure difference on both sides during this process. The distance between the first piston 21 and the second piston 122 increases. Finally, the negative pressures are formed in both the hydraulic cavity 1011 and the negative pressure cavity 1012 on both sides of the first piston 21, and the pressures of the two tend to be balanced. Finally, the second piston 122 is fixed at the opening 111 of the cylinder block 11 through the fixing member 121.

[0052] The structure of the above-mentioned fixing member 121 is diverse. The fixing member 121 can be a pin shaft, a screw rod, etc. In some embodiments of the present utility model, the fixing member 121 includes a cover plate 1211 and a latch rod 1212. The cover plate 1211 is connected to one end of the second piston 122. The latch rod 1212 is detachably connected to a surface of the cover plate 1211 facing away from the second piston 122. Both ends of the latch rod 1212 abut against and are limited at the opening edge of the cylinder block 11. With such a setting, the latch rod 1212 can limit the cover plate 1211 and the second piston 122 fixed to the cover plate 1211 at the opening 111. Due to the internal and external pressure difference of the second piston 122, the cover plate 1211 receives the pulling force of the second piston 122. The latch rod 1212 is supported at the opening 111 of the cylinder block 11. Under the action of friction, the latch rod 1212 is not easy to move. When disassembling and assembling, after directly removing the latch rod 1212, the second piston 122 retracts into the cylinder block 11 under the action of atmospheric pressure, and the pressures on both sides of the first piston 21 tend to the atmospheric pressure, which is convenient for disassembling the device. In addition, the cover plate 1211 can further increase the protection performance.

[0053] Further, in some embodiments of the present utility model, two limiting notches 112 are provided on the end face of the cylinder block 11 at the opening 111, and both ends of the latch rod 1212 are respectively assembled in the limiting notches 112. In this way, the latch rod 1212 is further limited, and the stability is higher.

[0054] The detachable connection manner between the latch rod 1212 and the cover plate 1211 is diverse. In some embodiments of the present utility model, the cover plate 1211 fixes the latch rod 1212 through a rod clamp. Through holes are respectively provided at both ends of the rod clamp, and a screw rod passes through the through holes and is connected to the cover plate 1211, thereby fixing the latch rod 1212 to the cover plate 1211.

[0055] In some other embodiments of the present utility model, a connecting column 1213 protrudes from one surface of the cover plate 1211, and an assembly hole 1214 penetrates radially along the circumference of the connecting column 1213, and the latch rod 1212 is inserted into the assembly hole 1214. With such a setting, the disassembly and installation of the latch rod 1212 are relatively convenient, and it can be directly inserted and pulled out.

[0056] There are also various connection manners between the cover plate 1211 and the second piston 122, which can be welding, clamping, etc. In some embodiments of the present utility model, a plurality of first through holes 1216 are provided around the connecting column 1213 of the cover plate 1211, and a plurality of first threaded holes 1221 are correspondingly provided on the second piston 122. A screwing member passes through one of the first through holes 1216 and is connected to one of the assembly holes 1214. With such a setting, the connection between the two has good stability, and when there is an airtightness problem with the second piston 122, or when there is a structural damage between the two, they can be replaced, and the replacement and repair costs are low.

[0057] In some embodiments of the present utility model, the movable member 20 is an elastic membrane, the edge of the elastic membrane is connected to the wall of the cavity, and when there is a pressure difference between the hydraulic cavity and the negative pressure cavity on both sides of the elastic membrane, the elastic membrane deforms, and the space of the negative pressure cavity changes.

[0058] In some other embodiments of the present utility model, the movable member 20 is a negative pressure bladder 22, the negative pressure cavity 1012 is formed inside the negative pressure bladder 22, and the hydraulic cavity 1011 is formed outside the negative pressure bladder 22. In this way, when there is a leak, the negative pressure bladder 22 deforms under the action of the pressure difference, and the space of the negative pressure cavity 1012 inside the negative pressure bladder 22 shrinks, so as to balance the internal and external pressure differences. The material of the negative pressure bladder 22 is generally a flexible material such as rubber or silica gel, which is easy to deform.

[0059] There are various installation methods for the negative pressure bladder 22. In some embodiments of the present utility model, the negative pressure bladder 22 is fixedly adhered to the inner wall of the cylinder block 11 by a sealant.

[0060] In some other embodiments of the present utility model, the pressure cylinder 10 includes a cylinder block 11 and a cylinder head structure 12. The cavity 101 is formed inside the cylinder block 11. An opening 111 is provided at one end of the cavity 101 away from the pipe interface 102. The cylinder head structure 12 is installed at the opening 111. The detection member 30 is installed inside the cylinder head structure 12. The negative pressure bladder 22 covers the detection member 30 and is hermetically connected to the cylinder head structure 12. In this way, during assembly, the negative pressure bladder 22 can be first installed on the cylinder head and then installed on the cylinder block 11 together with the cylinder head, which is more convenient.

[0061] Further, in some embodiments of the present utility model, a flange 221 is provided on the outer peripheral edge of the negative pressure bladder 22 close to the cylinder head structure 12. The cylinder head structure 12 includes a cover body 13, a mounting seat 14, and a pressure ring 16. The mounting seat 14 is installed inside the cover body 13, the pressure ring 16 is installed on the mounting seat 14, and the flange 221 is clamped between the pressure ring 16 and the mounting seat 14. With such a setting, the flange 221 is clamped by the pressure ring 16 and the mounting seat 14, and the stability and sealing performance are good, which can prevent the coolant from seeping into the negative pressure cavity 1012 and affecting the negative pressure sensor.

[0062] The pressing ring 16 is generally fixed to the mounting base 14 by a screw connection. Specifically, in some embodiments of the present invention, the mounting base 14 is provided with a second through hole 144, and the pressing ring 16 is provided with a second threaded hole 163. The screw connection passes through the second through hole 144 and is connected to the second threaded hole 163. A connecting ring 145 protrudes from the surface of the mounting base 14 facing the cover body 13. A sealing structure 141 is provided inside the connecting ring 145 and is hermetically connected to the cover body 13. The connection stability is good. In addition, by connecting the cover plate 1211 through the connecting ring 145, a certain interval is formed between the bottom surface of the mounting base 14 and the cover plate 1211, which can accommodate the head of the screw connection, and the structural arrangement is relatively reasonable. The sealing structure 141 can be a sealant or a sealing gasket, and no specific limitation is made here.

[0063] In order to further improve the stability and sealing performance, in some embodiments of the present invention, a stepped surface 162 is provided on the surface of the pressing ring 16 facing the flange 221, and the stepped surface 162 cooperates with the flange 221. The stability and sealing performance are higher, and it can also avoid the misalignment of the negative pressure bladder 22 during installation.

[0064] Furthermore, in some embodiments of the present invention, a positioning rib 143 is provided on the top surface of the mounting base 14, and the flange 221 is pressed against the positioning rib 143. This can improve the sealing performance between the contact surface of the flange 221 and the mounting base 14.

[0065] In some embodiments of the present invention, a positioning protrusion 161 is provided on the outer peripheral edge of the surface of the pressing ring 16 facing the mounting base 14, and a positioning notch 142 is provided on the outer peripheral edge of the mounting base 14. The positioning protrusion 161 cooperates with the positioning notch 142. With such a setting, it is further convenient to position during assembly and improves the assembly efficiency.

[0066] In some embodiments of the present invention, the liquid leakage detection device 100 further includes a three-way pipe 40, and one pipe orifice of the three-way pipe 40 is connected to the pipe interface 102. In this way, when assembling, the joints of the water circulation pipeline can be respectively connected to the other two pipe orifices of the three-way pipe 40, and the liquid leakage detection device 100 can be applicable to pipelines without a pipe orifice for docking with the pipe interface 102, and the adaptability is better.

[0067] Furthermore, in some embodiments of the present invention, the three-way pipe 40 includes a communicating pipe portion 41 and a detection pipe portion 42. One end of the detection pipe portion 42 is connected to the peripheral wall of the communicating pipe portion 41, and the inner diameter of the detection pipe portion 42 near one end of the communicating pipe portion 41 is smaller than the inner diameter of the communicating pipe portion 41. This can avoid the generation of turbulence when the water circulation passes through the intersection of the three-way valve, and prevent the device from vibrating and generating noise.

[0068] The present utility model further provides a water-cooled radiator, which includes the liquid leakage detection device 100 described above. For the specific structure of the liquid leakage detection device 100, reference may be made to the above embodiments. Since this water-cooled radiator adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0069] The present utility model further provides a computer, which includes the above water-cooled radiator. Similarly, since this computer adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0070] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A liquid leakage detection device, applied to a water-cooled radiator of a computer, characterized in that: The liquid leakage detection device comprises: A pressure cylinder, wherein the pressure cylinder is provided with a cavity and a pipe interface connected to the cavity; a movable part installed in the cavity, the movable part dividing the cavity into a hydraulic cavity and a negative pressure cavity, the hydraulic cavity being in communication with the pipe interface; and A detection component is installed in the negative pressure chamber to detect the air pressure of the negative pressure chamber or the change of the negative pressure chamber space.

2. The liquid leakage detection device according to claim 1, characterized in that: The movable part is a first piston, and the first piston is slidably installed in the cavity.

3. The liquid leakage detection device according to claim 2, characterized in that: The pressure cylinder includes a cylinder body and a cylinder cover structure, the cavity is formed in the cylinder body, the cavity is arranged at an opening at one end away from the pipe interface, the cylinder cover structure is detachably installed on the opening, the detection component is installed on the inner side of the cylinder cover structure, and the negative pressure chamber is formed between the movable part and the cylinder cover structure.

4. The liquid leakage detection device according to claim 3, characterized in that: The cylinder cover structure includes a fixing member and a second piston, the second piston is connected to the fixing member, the fixing member is fixed at the opening, and the detection member is installed on the inner side of the second piston.

5. The liquid leakage detection device according to claim 4, characterized in that: The fixing member includes a cover plate and a latch rod, wherein the cover plate is connected to one end of the second piston, and the latch rod is detachably connected to a surface of the cover plate away from the second piston, and both ends of the latch rod are located at the opening edge of the cylinder body.

6. The liquid leakage detection device according to claim 5, characterized in that: The cylinder body is provided with two limiting notches on the end surface of the opening, and the two ends of the latch rod are respectively assembled in the limiting notches.

7. The liquid leakage detection device according to claim 6, characterized in that: A connecting column is protrudingly provided on one side of the cover plate, and an assembly hole is radially penetrated through the peripheral side of the connecting column, and the latch rod is inserted into the assembly hole.

8. The liquid leakage detection device according to claim 7, characterized in that: The cover plate is provided with a plurality of first through holes, the second piston is correspondingly provided with a plurality of first threaded holes, and a threaded member passes through one of the first through holes and is connected to one of the assembly holes.

9. The liquid leakage detection device according to any one of claims 1 to 8, characterized in that: The liquid leakage detection device also includes a three-way pipe, and one pipe opening of the three-way pipe is connected to the pipe interface.

10. The liquid leakage detection device according to claim 9, characterized in that: The three-way pipe includes a connecting pipe part and a detection pipe part. One end of the detection pipe part is connected to the peripheral wall of the connecting pipe part. The inner diameter of the detection pipe part close to one end of the connecting pipe part is smaller than the inner diameter of the connecting pipe part.

11. A water-cooled radiator, characterized in that: The invention comprises a liquid leakage detection device as claimed in any one of claims 1 to 10.

12. A computer, characterized in that: Comprising the water-cooled radiator as claimed in claim 11.

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