TWI707226B - Leakage sensing device - Google Patents

Abstract

The disclosure relates to examination technology field and provides a tool-less tray that is detachably mounted on a casing inner wall. The tray has a plate body and a side wall; at least 3 shaped holes are disposed on the side wall; at least one screw pillar is fixed to the plate body and is configured to be firmly connected to a additional function board. The technical solution provided by the disclosure is tool-less, realizes fast installation and detachment of tray, realizes fast addition and removal of additional function board in limited space and is convenient to be used.

Description

Leakage sensing module

The present invention relates to the technical field of detection, in particular to a tool-free tray, a leakage sensing module and a tray installation method.

With the development of electronic technology in China, more and more electronic devices have been widely used. A large number of IT equipment will be concentrated in the main chassis of the data center. These data centers include various types of servers, storage, switches, and a large number of cabinets and other infrastructure. Every kind of IT equipment is composed of various hardware boards, and the mainframe is often densely packed with multiple boards.

In order to make full use of the three-dimensional space in the mainframe, some boards are fixed on the wall of the mainframe through trays, and then the boards are connected to the mainboard through cables. Generally speaking, the installation method of the pallet is screw fixing. That is, a first threaded hole is opened on the tray, a second threaded hole is opened at the corresponding position of the main chassis, and then a screw is used to pass through the first threaded hole and the second threaded hole in turn, and then the tray is fixed on the main with a screwdriver and other tools On the wall of the cabinet.

This assembly method has the following shortcomings:

(1) With the development of expansion modules (including the main chassis itself) towards miniaturization, the tray space for assembling expansion modules has shrunk sharply. Therefore, due to space constraints, when a screw fixing solution is used, installation and disassembly are very difficult. The smooth question.

(2) When installing or disassembling the pallet, it can only be realized with the help of tools. It is difficult to realize the requirement of quickly installing the network expansion module, which seriously affects the production efficiency of the production line.

(3) When using screws to install, the screws may be lost. Since the screws are made of metal materials, if they are left in the main chassis, safety hazards may be introduced.

Therefore, how to quickly and safely disassemble the tray to save time and manpower is a technical problem faced by those skilled in the art.

On the other hand, for electronic devices such as servers that work continuously for a long time, there is a heat dissipation problem. Currently, most cooling systems use air cooling technology. However, for products that consume a lot of heat and heat, air cooling technology is not suitable. At this time, the defects of air cooling, such as large cooling power consumption, high noise, and low equipment density, become significant. Therefore, our company adopts liquid cooling technology in some special models.

Since the coolant currently used has certain conductivity, once leakage occurs, it will cause great damage to the system. Therefore, leakage detection is an essential safeguard measure for liquid cooling systems.

For leakage detection, there are currently ready-made products on the market, but they are all aimed at daily life and industrial production. When used in our products, there are the following defects: 1) The installation location is not fixed. Since there are multiple detection points that need to be detected, and the detection devices can only be placed on one tray, the wiring will be messy; 2) The interface connection is inconvenient. Because they are mainly used in daily life and industrial production, the sensing line and the output signal interface are all screwed together, which is inconvenient to operate during installation; therefore, for the main chassis using liquid cooling technology, how to conveniently set up Liquid sensing modules have become another technical problem.

The above technical problems can be solved in one technical solution. First, design a tool-free tray that is easy to install, and then design a liquid leakage sensing printed board that is pre-fixed with plug-ins. By fixing the printed circuit board on the tray, the leakage sensing module can be conveniently arranged at a suitable position in the main chassis. The leakage sensing line can be fixed to the leakage sensing printed board through a plug-in program. If necessary, a plug-in program with a locking device can also be selected.

The object of the present invention is to provide a tool-free tray, which is detachably installed on the inner wall of a main cabinet and has a tray body and a side wall; the side wall is provided with at least 3 special-shaped holes; the tray body is fixed at least A threaded column is used for fixed connection with an additional function board.

In the tool-free tray as described above, the included angle between the tray body and the side wall is greater than 0° and less than or equal to 180°.

In the tool-free tray as described above, a handle is provided on the side of the tray body opposite to the side wall for assisting holding.

In the tool-free tray as described above, the special-shaped hole is in the shape of a four-pointed star, the center of which can allow the head of a push-button to pass through, and the width of the four pointed points is equivalent to the neck of the push-button.

In the tool-free tray as described above, the special-shaped hole is embossed, the lower half of which can allow the head of a push-pin to pass through, and the width of the upper half is equivalent to the neck of the push-pin.

In the tool-free tray as described above, an elastic piece is fixedly arranged on the side wall, and a bayonet is provided on the elastic piece for buckling with a buckling component to limit the tray so that it cannot slide left and right up and down .

In the tool-free tray as described above, the elastic sheet further includes a handle-shaped extension; when the tray is removed, the extension is pulled to separate the bayonet from the buckling part.

In the tool-free tray as described above, a plurality of I-shaped nails are riveted or welded on the inner wall of the main casing, and their positions correspond to the positions of the special-shaped holes.

In the tool-free tray as described above, the buckling part is a semicircular or truncated cone-shaped protrusion.

Another object of the present invention is to provide a leakage sensing module for monitoring the leakage of liquid cooling components, comprising the above-mentioned tray and a leakage sensing printed board; the leakage sensing printed board is fixed on The threaded post of the disc body is provided with a sensing interface for connecting the leakage sensing line.

In the above-mentioned leakage sensing module, the handles and the elastic pieces on the tray are both arranged on the inner side of the tray, and the leakage sensing printed board is arranged on the outer side of the tray.

In the above-mentioned leakage sensing module, the leakage sensing line is wound irregularly On the cold water pipe and the hot water pipe of the liquid cooling component, the joint of the leakage sensing line is inserted into the sensing interface.

In the above-mentioned leakage sensing module, the winding density of the leakage sensing line near the water inlet and outlet of the cold water pipe and the hot water pipe is greater than the winding density at the middle of the cold water pipe and the hot water pipe .

In the above-mentioned leakage sensing module, the leakage sensing printed board is also provided with a signal interface, and the signal interface provides information on whether the liquid-cooled component is leaking and where it is leaking.

The present invention also provides a method for installing a tray, including the following steps: S1, a plurality of I-shaped nails and a fastening component are fixedly installed inside the main casing; S2, the special-shaped hole is connected to the I-shaped nail Sleeve relatively, and then move downwards to engage the neck of the thumb tack with the special-shaped hole; S3. Push the tray toward the outer side of the main casing to make the The bayonet of the elastic sheet is locked tightly with the buckling part.

In the method for installing the tray as described above, when the tray is removed, the following steps are included: S5, pulling the elastic sheet toward the inner side of the main chassis; S6, pulling the handle on the tray at the same time Pull up the ridge extension.

Compared with the conventional technology, the tool-free tray provided by the technical solution of the present invention realizes tool-free suspension through the cooperation of special-shaped holes and I-shaped nails; and further fixes the tray through the fastening components so that it cannot be shaken at will (small movement ); This not only achieves quick installation, but also reduces the risk of screws and other objects falling into the main chassis. Compared with the conventional technology, maintenance personnel no longer need to operate each pin or screw in turn, which greatly saves time and manpower.

Further, a liquid leakage sensing printed board is installed on the tray to form a liquid leakage sensing module. Since the leakage detection module is not installed in all main cabinets by default, The tray can be easily installed in the required main casing, which improves the efficiency of disassembly and assembly of the leakage sensing module, effectively overcomes various shortcomings in the prior art, and has a high industrial value.

1: head

2: neck

3: base

4: Disk body

5: side wall

6: Special-shaped hole

7: Threaded column

8: handle

9: Center

10: Narrow part

11: Handle-like extension

12: bayonet

13: Fastening parts

14: Leakage sensing printed board

15: Sensor interface

16: signal interface

17: Tray

18: Leakage sensing line

Figure 1 is a schematic diagram of a leakage sensing plate in the present invention; Figure 2 is a schematic diagram of the arrangement of cold and hot water pipes and a leakage sensing line in the present invention; Figure 3 is an installation schematic diagram of an embodiment of the present invention; Figure 4 is a first embodiment of the present invention Schematic diagram of the installation effect of the embodiment; Figure 5 is a partial enlarged view of Figure 4; Figure 6 is a schematic diagram of the corresponding relationship between the shaped hole and the I-shaped nail in Figure 5; Figure 7 is a schematic diagram of the I-shaped nail in the present invention; Figure 8 is the present invention An example of a special-shaped hole in the invention; Fig. 9 is an example of another special-shaped hole in the present invention.

In order to make the objectives and features of the present invention more comprehensible, the specific embodiments of the present invention will be further described below with reference to the accompanying drawings. However, the present invention can be implemented in different forms and should not be limited to the described embodiments. Moreover, in the case of no conflict, the embodiments in this application and the features in the embodiments allow mutual combination or replacement. Combined with the following description, the advantages and features of the present invention will be clearer.

It should be noted that the drawings are in a very simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

It should also be stated that the purpose of numbering the steps in the present invention is to facilitate reference, not to limit the sequence. For individual steps that need to be emphasized in order, special instructions will be given in the text.

The Seaking mainframe is a standard server mainframe developed by our company, which can meet most customers' hardware configuration requirements for the 2U mainframe. The corresponding internal model of the mainframe The degree of organization is extremely high, and the replaceability is excellent. With the rapid development of cloud computing, heat dissipation has become a major bottleneck restricting the development of servers. Moreover, the current generations are also calling for equipment to be green and energy-saving, so liquid-cooled components and related leakage sensing modules are introduced into the Seaking main chassis. Considering that the Seaking main chassis is already a mold product and the hardware layout has been fixed, after research, it was decided to hang the leakage sensing module in the rear window of the main chassis to minimize the original layout in the main chassis. However, if the common screw fixing method is used, the main board maintenance will be affected. Because the above-mentioned leakage sensing module is suspended above the motherboard, if the motherboard needs to be maintained, it will inevitably take a lot of time to remove the leakage sensing module.

The purpose of the design of the present invention is to hope that the leakage sensing module can be installed simply and quickly. The main design idea of the present invention is to first design an easily disassembled tray 17 and fix the leakage sensing plate on the tray 17, thereby forming an easily disassembled leakage sensing module. The design idea is to standardize the main casing and tray 17, and use uniform aperture and pitch to make the I-shaped on the main casing. Nails and special-shaped holes on the tray 17, then when necessary, fix the corresponding functional printed circuit board on the tray 17 to form a functional module, which can be hung on the inner wall of the main chassis "at will" On it. Specifically, the positional correspondence between the irregular holes and the j-shaped nails can be referred to as shown by the dotted line in FIG. 6.

The present invention first describes one part in this scheme: the j-shaped nail. As shown in FIG. 6, the I-shaped nail is a relatively common mechanical part, which has a head 1, a neck 2 and a base 3. In practical applications, for the convenience of manufacturing, the head 1 and the base 3 are usually the same. In the present invention, the base 3 of the I-shaped nail is fixed on the inner wall of the main casing. The fixing method can be riveting or welding. If there is a suitable material, glue can also be used. When the tray 17 is installed, the special-shaped hole on the tray 17 is inserted into the head 1 and the head 1 passes through the special-shaped hole, so that the special-shaped hole is hung on the neck 2. Then gently push the tray 17 to make the narrower part of the special-shaped hole jam with the neck 2 so as to achieve a more stable suspension function module.

The present invention also provides a tool-free tray 17, which can be detached during use The detachable installation is on the inner wall of a main casing, which is convenient to increase or decrease the functional modules in the main casing. As shown in FIGS. 3 to 5, the tool-free tray 17 has a tray body 4 and a side wall 5. The side wall 5 is provided with a plurality of special-shaped holes. Considering that three points determine a plane, three special-shaped holes are provided in this embodiment for hanging. A plurality of threaded posts 7 provided with internal threads are fixed on the disc body 4 for connecting the functional printed boards required later. According to the size of the functional printed board, the number of threaded posts 7 can be 1, 2, or 3. Considering the area of the suspended pallet 17, the number of threaded posts 7 should not exceed 6.

Further, in the figure, the included angle between the disk body 4 and the side wall 5 is 90°, which is a common angle setting in mechanized production. However, in order to adapt to the limitation of various installation spaces in the main casing, the included angle between the plate body 4 and the side wall 5 can also be other angles, as long as it is greater than zero. , It is only necessary to be less than or equal to 180°.

Considering the convenience of disassembly, a handle 8 is also provided on the tray 4. The handle 8 and the side wall 5 are separately provided on both sides of the tray 4. Specifically, if the space is sufficient, the handle 8 can be in the same plane as the tray body 4, that is, a protrusion that is convenient for grasping extends from the tray body 4 as the handle 8. If the space on the outside of the tray 17 is insufficient, as shown in FIG. 5, a structure that is convenient for grasping can be extended upward from the edge of the tray body 4 as a handle.

Further, the irregular hole 6 may be four-pointed star-shaped or convex-shaped. Figure 8 shows a four-pointed star shaped hole. In the figure, the effective width at the center 9 is equivalent to the diameter of the aforementioned I-shaped nail head 1 for passage of I-shaped nails, and the width of the narrow portion 10 (that is, the tip) is the same as the diameter of the I-shaped nail neck 2 Equivalent, the tray 17 can be clamped and fixed. Figure 9 shows a convex shaped hole. In the figure, the effective width at the center 9 (that is, the lower half of the embossed character) is equivalent to the diameter of the aforementioned I-shaped nail head 1, allowing the I-shaped nail to pass through, and the narrow part 10 (that is, the upper half of the embossed character) The width is equivalent to the diameter of the neck 2 of the pin, and the tray 17 can be clamped and fixed.

Further, as shown in FIG. 6, an elastic piece is also fixedly arranged on the side wall 1, and a rectangular bayonet 12 is provided on the elastic piece for buckling with a buckling member 13 to define the tray 17, so that It cannot slide left and right up and down arbitrarily. The bayonet 12 and the snap-fit part 13 The position correspondence can be seen in the dotted line in the figure. Specifically, the fastening component 13 is arranged on the inner wall of the main casing, and is a semicircular protrusion or a truncated cone-shaped protrusion protruding from the inner wall of the main casing. In order to achieve a better fixing effect, the width of the bayonet 12 is equivalent to the maximum outer diameter of the buckle member 13, preferably the same or slightly smaller.

Further, the elastic sheet also includes a handle-shaped extension 11; when the tray 17 is removed, the handle-shaped extension 11 is pulled to separate the bayonet 12 from the buckling part 13.

As shown in FIG. 1 and FIG. 2, the liquid leakage sensing printed board 14 shown in FIG. 1 is fixed on the threaded post 7 on the tray 17 through screws to form a liquid leakage sensing module. The leakage sensing module is used to monitor the leakage of liquid cooling components. Specifically, the liquid leakage sensing printed board 14 is provided with two sets of sensing interfaces 15 for connecting the liquid leakage sensing wires 18. There are two leakage sensing lines 18. One is used to sense the leakage of the hot and cold water pipes in the main cabinet, and the other is used to sense the leakage of the hot and cold water pipes outside the main cabinet (that is, on the rack). The joints of the two leakage sensing lines are inserted into the two sets of sensing interfaces 15 respectively. At the same time, the leakage sensing printed board 14 is also provided with a signal interface 16, which is used to provide information on whether the liquid-cooled component is leaking and where it is leaking. The information is transmitted to the main chassis through the signal line. Motherboard.

Furthermore, in conjunction with FIGS. 3 and 5, when the handle 8 is in the style shown in the figure, the handle 8 and the elastic sheet are arranged on the inner side of the tray 17, and the liquid leakage sensing printed board 14 is arranged on the outer side of the tray 17.

As shown in Figure 2, the liquid leakage sensing line is randomly wound on the cold water pipe and hot water pipe of the liquid cooling component, and the winding density near the water inlet and outlet of the cold water pipe and hot water pipe It may be slightly larger, and the winding density may be slightly smaller at the relatively central position of the cold water pipe and the hot water pipe, and even the liquid leakage sensing line may not be provided in the middle part. Such a winding method increases the detection range of the detection module, effectively improves the sensitivity of leakage detection, and improves the leakage detection rate.

Adapted to the tray 17 described above, the present invention also provides specific installation and removal methods.

Specifically, the installation method includes the following steps: S1, a plurality of I-shaped nails and a fastening component are fixedly installed inside the main casing; S2, the special-shaped hole and the I-shaped nail are relatively nested, Then push down to make the neck of the thumb tack engage with the special-shaped hole; S3. Push the tray toward the outside of the main casing to make the snap on the side wall Clamp with the buckling part.

Correspondingly, the disassembling method includes the following steps: S5, pulling the elastic sheet toward the inner side of the main casing; S6, simultaneously pulling the handle-shaped extension on the tray body and pulling upward.

After step S6, the tray can be taken out.

In addition, when the main chassis is industrially produced, the I-shaped nails and the fastening parts can be pre-installed in a position with a relatively sufficient space according to the uniform aperture and hole distance, or directly connect the I-shaped nails and The buckling component is integrally fabricated on the main casing wall, and step S1 can be omitted.

Similarly, the tray 17 can be set with special-shaped holes according to the same standard. In the future large-scale industrial production, since the I-shaped nails and fastening components have been preset on the main chassis, it is necessary to add additional functional modules. More convenient.

The above-mentioned tool-free tray 17 machine leakage sensing module is easy to use, can improve space utilization, installation and disassembly can save more labor costs, and provide a good solution for increasing the flexibility of server function changes. The internal space of the server is getting denser.

Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

4: Disk body

5: side wall

6: Special-shaped hole

7: Threaded column

8: handle

11: Handle-like extension

Claims (8)

A leakage sensing module is used to monitor the leakage of a liquid-cooled component. The leakage sensing module includes a tool-free tray and a leakage sensing printed board. The tool-free tray is detachably mounted on An inner wall of a main casing, the tool-free tray has a tray body and a side wall; at least 3 special-shaped holes are provided on the side wall; at least one threaded post is fixed on the tray body for connecting with an additional The functional board is fixedly connected; the leakage sensing printed board is fixed on the at least one threaded post of the disc body through a screw, and is provided with a sensing interface for connecting a leakage sensing line. The liquid leakage sensing module according to claim 1, wherein a handle is provided on the side of the plate body opposite to the side wall for assisting holding. The leakage sensing module according to claim 1, wherein the special-shaped hole is in the shape of a four-pointed star, the center of which can be used for a head of a tack nail, and the width of the four tips of the A neck of a word nail is equivalent; or, the special-shaped hole is embossed, the lower half of which can pass the head of a word nail, and the width of the upper half is the same as that of the word nail. The neck is comparable. The leakage sensing module according to claim 1, wherein an elastic piece is fixedly arranged on the side wall, and a bayonet is provided on the elastic piece for buckling with a buckling component to define the tray, Make it impossible to slide left and right up and down. The leakage sensing module according to claim 4, wherein the elastic sheet further includes a handle-shaped extension, and the handle-shaped extension is used to separate the bayonet from the buckling part under external force , Thereby disassembling the tray. The leakage sensing module according to claim 5, wherein the fastening member is a semicircular or truncated cone-shaped protrusion. The leakage sensing module according to claim 1, wherein a handle and an elastic piece on the tray are both arranged inside the tray, and the leakage sensing printed board is arranged outside the tray. The leakage sensing module according to claim 1, wherein the leakage sensing line is randomly wound on a cold water pipe and a hot water pipe of the liquid cooling component, and a joint of the leakage sensing line is inserted The winding density of the sensing interface and the leakage sensing line at a water inlet and a water outlet close to the cold water pipe and the hot water pipe is greater than that at the middle of the cold water pipe and the hot water pipe Winding density.

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