Airtightness detection device based on runner box body

Abstract

The utility model discloses an airtight detection device based on a flow channel box body, which belongs to the technical field of airtight detection of special box bodies, and is characterized in that a fluid channel is arranged on the flow channel box body, and flow channel openings are formed on two sides of the flow channel box body; airtight fixing assemblies are arranged on the two flow channel openings; the airtight fixing assembly is externally connected with an airtight spiral tool, and the airtight fixing assembly and the flow channel box body are fixed in a sealed mode and complete airtight detection on the circulation channel. The air tightness detection device based on the flow channel box body can effectively solve the problems that the air tightness detection of the flow channel box body in the prior art can not be directly carried out on the flow channel box body due to the fact that the flow channel box body needs to be fixedly connected with an external air tightness detection pipe through processing an internal threaded hole on the flow channel box body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to special box body airtightness detection technical field, specifically relates to a kind of airtightness detection device based on flow channel box body. BACKGROUND

[0002] With the rapid development of electronic industry, microelectromechanical system, microfabrication technology, large-scale integrated circuit and high-power electronic device will become a major trend in future development. Electric appliance power consumption is getting bigger and bigger, electronic device packaging integration and module assembly density are getting higher and higher, and the heat transfer load and strength of its heat exchange system are increasing day by day and the heat dissipation area is very small, which causes the heat to rise rapidly, and the corresponding chip temperature rises, the heat of heating components is taken away by the flow of internal low-temperature liquid, to ensure that electrical components are in normal working temperature range, if the heat cannot be dissipated in time, it will directly affect the use of components, and long-term use will greatly shorten the service life. Flow channel box body is one of such parts. The detection of whether it leaks or bulges and cracks under certain airtightness is an important detection step and index requirement of flow channel box body.

[0003] Flow channel box body detection airtightness belongs to the category of fluid mechanics in engineering mechanics. Fluid is a kind of matter that can flow, and it is a kind of matter that can continuously deform under any small shear force. Since the flow channel box body is pressurized, the object of study conforms to fluid statics, mainly in the force on the surface of the fluid volume, which is generated by the contact with other objects, any surface force can be decomposed into: the normal force perpendicular to the surface of the fluid and the tangential force tangent to the surface of the fluid. The surface force acting on the unit area of the fluid is called stress, and the fluid pressure is the normal surface stress. The static pressure of the fluid is the fluid pressure when the fluid is at rest or relatively static. The fluid static pressure has two important characteristics: one, the direction of the fluid static pressure is always perpendicular to the action surface and points to the action surface, that is, along the inner normal direction of the action surface; two, the fluid static pressure at any point in the static fluid is equal in all directions. According to the above two characteristics of fluid, the purpose of detecting flow channel box body is to ensure that there is no leakage, no plastic deformation or cracking and bulging after a certain pressure is pressed and pressure is maintained for a period of time under stable working conditions. The airtightness detection of the flow channel box body of the prior art needs to be fixedly connected with the external airtightness detection pipe through the internal threaded hole on the flow channel box body to ensure the safety and stability of the detection process, and the flow channel box body cannot be directly detected for airtightness. UTILITY MODEL CONTENTS

[0004] The utility model discloses a purpose is to the above -mentioned deficiency provides a kind of based on flow channel box's air tightness detection device, to solve the air tightness detection of flow channel box of prior art needs through the inner thread hole on flow channel box and external air tightness detection pipe fixed connection, cannot directly carry out air tightness detection to flow channel box etc.

[0005] A kind of based on flow channel box's air tightness detection device, the fluid passage is equipped on the flow channel box, and it is formed with flow channel mouth on the two sides of flow channel box;Two the flow channel mouth are equipped with air tightness fixed component;Air tightness spiral tool is connected to the air tightness fixed component, and air tightness detection is completed to flow channel by air tightness fixed component and flow channel box sealing fixed.

[0006] Further, the air tightness fixed component includes fixed workpiece;The fixed workpiece is C-shaped, for clamping in the two sides of flow channel box;The upper end of the fixed workpiece is equipped with through-hole;The fixed workpiece is clamped on flow channel box, and its through-hole is communicated with flow channel mouth.

[0007] Further, the air tightness fixed component further includes sealing workpiece;The sealing workpiece includes tool connecting pipe, connecting disc and flow channel connecting pipe in sequence from top to bottom;The tool connecting pipe, connecting disc and flow channel connecting pipe are integrally connected, and the middle part is equipped with the gas passage that penetrates.

[0008] Further, the lower end of the flow channel connecting pipe is equipped with several layers of sealing ring;The flow channel connecting pipe passes through the through-hole in the upper end of fixed workpiece, and is sealingly connected with flow channel mouth by sealing ring.

[0009] Further, the connecting disc is uniformly equipped with several screw holes;The periphery of the through-hole in the upper end of the fixed workpiece is equipped with corresponding screw thread blind hole;The connecting disc and fixed workpiece can be fixedly connected by screw, and play the role of stabilizing sealing workpiece.

[0010] Further, the outer part of the tool connecting pipe is equipped with external thread;Air tightness spiral tool is fixedly connected with tool connecting pipe.

[0011] Further, the lower end of the flow channel connecting pipe is equipped with r slot, to facilitate flow channel connecting pipe to enter flow channel mouth.

[0012] Further, the sealing ring is provided with two layers, and is arranged at the lower end of the flow channel connecting pipe.

[0013] Further, the outer thread of the tool connecting pipe is also equipped with sealing device, for strengthening the sealing property between air tightness spiral tool.

[0014] Further, the airtight spiral tool injects gas from the flow channel mouth to the fluid channel through the gas passage in the middle of the tool connecting pipe, the connecting disc and the flow channel connecting pipe, and completes the airtightness detection of the fluid channel.

[0015] The utility model discloses beneficial effect is:

[0016] The utility model discloses fixed workpiece with C type flow channel box body and sealing workpiece, complete the airtightness detection of the fluid channel in flow channel box body through the airtight spiral tool of external connection, do not need to process internal thread hole on flow channel box body, can directly complete the airtightness detection of flow channel box body, save time, the lower end of flow channel connecting pipe is provided with two layers of sealing ring, which further ensures the sealing property between the sealing workpiece and the flow channel mouth, and ensures the accuracy of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic diagram of the utility model;

[0018] Fig. 2 It is the fixed workpiece schematic diagram of the utility model;

[0019] Fig. 3 It is the upper structure schematic diagram of the sealing workpiece of the utility model;

[0020] Fig. 4 It is the lower structure schematic diagram of the sealing workpiece of the utility model;

[0021] In the drawings: 1, flow channel box body;2, fluid channel;3, fixed workpiece;4, through -hole;5, tool connecting pipe;6, connecting disc;7, flow channel connecting pipe;8, sealing ring;9, threaded hole;10, threaded blind hole;11, external thread. DETAILED DESCRIPTION

[0022] The utility model will be further detailed below in combination with the drawings and specific embodiment. To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The components of the utility model embodiment described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of the protection of the utility model.

[0023] It should be noted that similar reference numerals and letters refer to like items in the accompanying drawings, and thus, once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings. In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, and are merely for the convenience of describing the present application and simplifying the description, and thus, cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", and the like are merely used for differentiation in description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be absolutely horizontal, but can be slightly inclined. In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be connected inside two elements. 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.

[0024] Embodiment one:

[0025] See the attached Figs. 1-4 A gas tightness detection device based on the flow channel box body 1, without machining the internal threaded hole 9 on the flow channel box body 1, the fixing and gas tightness detection can be completed. Specifically, the flow channel box body 1 is provided with a fluid passage 2, and the fluid passage 2 circulates cooling liquid to cool the components in the box body. The fluid passage 2 is formed with two flow channel openings on the upper end of the flow channel box body 1 on both sides. The gas tightness detection device includes two gas tightness fixing assemblies, which are detachably and sealingly connected to the two flow channel openings. The gas tightness fixing assembly is connected with a gas tightness screw tool, and the gas tightness screw tool is used to deliver gas pressure into the fluid passage 2 for gas tightness detection.

[0026] The preferred airtight fixing assembly includes a fixing workpiece 3, which is in the shape of C as a whole and can be clamped on one side of the flow channel box body 1. The machining precision of the fixing workpiece 3 can ensure clamping and fixing with one side of the flow channel box body 1. The fixing workpieces 3 clamped on the two sides of the flow channel box body 1 are oppositely arranged. A through hole 4 is arranged at the upper end of the fixing workpiece 3. After being clamped on the flow channel box body 1, the through hole 4 is communicated with the flow channel port, and a gas pipeline channel for airtight detection is reserved. The fixing workpiece 3 can ensure the stability and safety of detection during airtight detection, prevent shaking during detection due to detection air pressure or other external factors, and affect the detection result.

[0027] The airtight fixing assembly further includes a sealing workpiece, which is used for serving as a gas channel for airtight detection and simultaneously serving as a sealing function. Specifically, the sealing workpiece includes, in sequence from top to bottom, a tool connecting pipe 5, a connecting disc 6 and a flow channel connecting pipe 7 which are integrally connected. The tool connecting pipe 5 is used for connecting with an airtight screw tool. The connecting disc 6 is used for fixedly connecting with the fixing workpiece 3. The flow channel connecting pipe 7 is used for sealingly connecting with the flow channel port. The centers of the tool connecting pipe 5, the connecting disc 6 and the flow channel connecting pipe 7 are all throughly arranged, which are used for the flow of gas.

[0028] The outer part of the tool connecting pipe 5 is provided with an external thread 11 structure. The airtight screw tool of the prior art can be fixedly connected with the external thread 11 structure of the tool connecting pipe 5 through thread cooperation. A sealing device such as a sealing ring 8 structure can be arranged at the external thread 11 to strengthen the sealing between the airtight screw tool. A plurality of threaded through holes 4 are uniformly arranged around the through hole 4 at the middle part of the connecting disc 6. A corresponding number of threaded blind holes 10 are uniformly arranged around the through hole 4 at the upper end of the fixing workpiece 3. The connecting disc 6 is aligned above the fixing workpiece 3 and fixedly connected through a screw. The flow channel connecting pipe 7 penetrates through the through hole 4 of the fixing workpiece 3 and is inserted into the flow channel port. Two layers of sealing rings 8 are arranged at intervals on the flow channel connecting pipe 7. The diameter of the flow channel connecting pipe 7 is equivalent to that of the flow channel port. Through the arrangement of the two layers of sealing rings 8, the stable connection between the flow channel connecting pipe 7 and the flow channel port can be ensured, and the sealing property is also ensured. An r groove is arranged at the lower end of the flow channel connecting pipe 7. The arrangement of the r groove can ensure the sealing property of the flow channel connecting pipe 7 after being connected with the flow channel port, and can simplify the installation process.

[0029] The specific operation steps are as follows: the liquid cooling module flow channel box body 1 is formed by welding the liquid cooling flow channel base plate and the liquid cooling cover plate, the surface of the numerical control machining center is checked and confirmed to be clean, without burrs and without excess, the workpiece 3 is clamped on the flow channel opening of the flow channel box body 1 by a C-shaped fixing tool, the sealing workpiece is slowly rotated into the flow channel opening in a rotating manner, the connecting disc 6 is fixed with the fixing tool 3 by a screw, and the static mode before the air tightness detection is realized. The air tightness screw tool is connected to the tool connecting pipe 5, the air tightness detection test is carried out according to the technical requirements (pressure test: no leakage, no plastic deformation or cracking and bulging after a certain pressure is applied and pressure is maintained for a period of time are qualified), when the test pressure is the specified pressure, if any of the following conditions occurs in the tested part assembly, it is determined that the air tightness detection of the part assembly is unqualified.

[0030] a) continuous bubble emergence.

[0031] b) new bubbles are still generated after pressure is maintained for a period of time.

[0032] c) bubbles still appear after bubbles at fixed positions are wiped off.

[0033] d) pressure fluctuation exceeds the range specified in the design or process document after pressure is maintained and then ends.

[0034] e) other conditions specified in the process document.

[0035] On the contrary, if the above conditions do not occur, it is determined that the sealing performance is good.

[0036] The above only describes preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A flow cell based leak detection apparatus, characterized by: The fluid passage box body (1) is provided with a fluid passage (2), which forms a flow passage on both sides of the fluid passage box body (1); the two flow passages are each provided with an airtight fixing assembly; the airtight fixing assembly is circumscribed by an airtight spiral tool, which is sealed and fixed with the fluid passage box body (1) and completes airtight detection of the fluid passage.

2. The flow channel box based air tightness detection device according to claim 1, wherein: The airtight fixing assembly comprises a fixing workpiece (3); the fixing workpiece (3) is C-shaped and is used for clamping on both sides of the fluid passage box body (1); the upper end of the fixing workpiece (3) is provided with a through hole (4); the fixing workpiece (3) is clamped on the fluid passage box body (1), and the through hole (4) is communicated with the flow passage.

3. The flow channel box based air tightness detection device of claim 2, wherein: The airtight fixing assembly further comprises a sealing workpiece; the sealing workpiece comprises, from top to bottom, a tool connecting pipe (5), a connecting disc (6) and a flow passage connecting pipe (7); the tool connecting pipe (5), the connecting disc (6) and the flow passage connecting pipe (7) are integrally connected and are provided with a gas passage penetrating through the middle part.

4. The flow channel box based air tightness detection device of claim 3, wherein: The lower end of the flow passage connecting pipe (7) is provided with a plurality of layers of sealing rings (8); the flow passage connecting pipe (7) penetrates through the through hole (4) at the upper end of the fixing workpiece (3) and is sealingly connected with the flow passage through the sealing rings (8).

5. The flow channel box based air tightness detection device of claim 4, wherein: The connecting disc (6) is uniformly provided with a plurality of threaded holes (9); the through hole (4) at the upper end of the fixing workpiece (3) is provided with corresponding threaded blind holes (10) around the through hole (4); the connecting disc (6) and the fixing workpiece (3) can be fixedly connected through screws, thereby stabilizing the sealing workpiece.

6. The flow channel box based air tightness detection device of claim 5, wherein: The outer part of the tool connecting pipe (5) is provided with an external thread (11); the airtight spiral tool is fixedly connected with the tool connecting pipe (5).

7. The flow channel box based air tightness detection device of claim 6, wherein: The lower end of the flow passage connecting pipe (7) is provided with an r groove, which facilitates the flow passage connecting pipe (7) to enter the flow passage.

8. The flow channel box based air tightness detection device of claim 7, wherein: The sealing rings (8) are provided in two layers and are arranged at intervals at the lower end of the flow passage connecting pipe (7).

9. The flow channel box based air tightness detection device of claim 8, wherein: The external thread (11) of the tool connecting pipe (5) is also provided with a sealing device, which is used for enhancing the airtightness between the airtight spiral tool and the tool connecting pipe (5).

10. The flow channel box based air tightness detection device of claim 9, wherein: The airtight spiral tool injects gas from the flow passage into the fluid passage (2) through the gas passage penetrating through the middle part of the tool connecting pipe (5), the connecting disc (6) and the flow passage connecting pipe (7), thereby completing airtightness detection of the fluid passage (2).

Images