Heat pipe seal head

Abstract

The utility model relates to a heat pipe seal head, which comprises a base and an exhaust pipe, a central through hole is arranged at the central position of the base, the exhaust pipe is inserted into the central through hole and sequentially sleeved with a plurality of middle sleeves and a protective cover, and a flattened seal head is arranged on the upper portion of the protective cover. According to the utility model, the exhaust pipe is protected in a closed environment by installing the plurality of middle sleeves and the protective cover, so that the exhaust pipe can be protected from being influenced by the external environment during the operation of the heat pipe, and the exhaust pipe is prevented from being corroded or collided and damaged. Meanwhile, sealing rings are installed on the base and each middle-section sleeve, after installation is completed, the sealing rings and the exhaust pipe can form double sealing, the situation that the vacuum degree of the heat pipe is reduced due to leakage in the operation process is further prevented, and the service life of the heat pipe is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pipe heat exchanger technical field, concretely is a kind of heat pipe end socket. BACKGROUND

[0002] Heat pipe is widely used in industry, electronics and other fields as a good heat exchange element. After long time use, with the generation of non-condensable gas in the pipe, non-condensable gas gathers in the upper part of the heat pipe, forming a "gas column", the "gas column" part has extremely low heat transfer coefficient, basically does not participate in the heat transfer process of heat pipe, causing the heat transfer area of the upper part of the heat pipe to decrease, and the heat transfer effect becomes poor. And with the increase of heat pipe running time, the amount of non-condensable gas in the pipe gradually increases, and the length of the "gas column" also increases, causing the heat transfer effect of the heat pipe to become worse and worse. Therefore, it is necessary to take certain measures to remove the non-condensable gas in the heat pipe to ensure the heat transfer effect of the heat pipe and prolong the service life of the heat pipe.

[0003] Patent CN102980428A, the invention relates to a heat pipe integrated preparation method and device, in the process of spinning sealing to the unsealed end of heat pipe, first vacuumizing, then filling working medium under the condition of negative pressure in the heat pipe, and then continuing to spin sealing until the end of the heat pipe is completely sealed. The invention method and device can realize heat pipe liquid filling, vacuumizing and sealing integration, can further improve heat pipe preparation efficiency and reduce production cost. But the heat pipe produced by the invention is difficult to vacuumize repeatedly, and the heat pipe end is not protected, so the heat pipe is easy to be damaged after long time running. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a heat pipe end socket, which solves the problem of sealing during multiple vacuumizing of the heat pipe and reduces the risk of leakage at the heat pipe end socket.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a heat pipe end socket, comprising a base and an air extraction pipe, a center through hole is formed in the center position of the base, the air extraction pipe is an elongated hollow metal pipe, which is inserted and installed at the center through hole, the part of the air extraction pipe exposed from the base is successively sleeved with a plurality of middle segment sleeves and a protective cover, the upper part of the protective cover is a pinched end socket, and a sealing ring is arranged at the connection between the base and the middle segment sleeve, the connection between adjacent two middle segment sleeves and the connection between the middle segment sleeve and the protective cover.

[0006] Further, the base is a boss structure, and a base fixing thread is arranged at the upper part of the base.

[0007] Further, the middle section sleeve base material is a round pipe, the upper part is provided with a sleeve outer thread, the lower part is provided with a sleeve inner thread, and a circular ring fixing piece is installed on the top, the inner hole diameter of the circular ring fixing piece is same with the outer diameter of the air suction pipe, and a plurality of the middle section sleeves are stacked on the base.

[0008] Further, the sealing ring is arranged on the bottom surface of the boss step of the base and the bottom of the sleeve outer thread of each middle section sleeve.

[0009] Further, the base material of the protective cover is a round pipe with the same specification as the middle section sleeve, and the lower part is provided with a protective cover inner thread.

[0010] Compared with the prior art, the heat pipe head has the following beneficial effects:

[0011] 1. The air suction pipe is protected in a closed environment by installing a plurality of middle section sleeves and a protective cover, so that the air suction pipe is not affected by the external environment during the operation of the heat pipe, and corrosion or bump damage of the air suction pipe is avoided. Meanwhile, a sealing ring is installed on the base and each middle section sleeve, and after installation, double sealing with the air suction pipe is formed, so that the vacuum degree of the heat pipe is further prevented from being reduced due to leakage during operation, and the service life of the heat pipe is improved.

[0012] 2. The circular ring fixing piece arranged on the middle section sleeve can assist in positioning the air suction pipe and ensure the perpendicularity of the installation of the air suction pipe. During the vacuumizing process of the heat pipe and the cutting process of the air suction pipe, the circular ring fixing piece of the middle section sleeve can fix the air suction pipe, so that the airtight weld between the air suction pipe and the base is prevented from being damaged due to vibration generated during the vacuumizing or cutting process, and the sealing property of the heat pipe is ensured.

[0013] 3. The middle section sleeve and the protective cover of the utility model are made of round pipes with the same specification, only the upper part has different processing technology, so that the manufacturing process of the heat pipe head is reduced, the complexity of the manufacturing process is reduced, and the production efficiency of the heat pipe head is improved. Meanwhile, the part of the air suction pipe that is pinched and welded can be cut off and re-vacuumized, so that multiple vacuumizing of the heat pipe is realized, and the service life of the heat pipe is prolonged. Different lengths and diameters of air suction pipes can be configured according to the number and rate of vacuumizing of the heat pipe, and different numbers of middle section sleeves are matched; different specifications of circular ring fixing pieces can be matched according to different diameters of the air suction pipe. Through the modular design, the production and manufacturing of heat pipes with different requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a state schematic view of opening the protective cover;

[0016] Figure 3 The whole split schematic view of the present application;

[0017] Figure 4 The base schematic view of the present application;

[0018] Figure 5 The middle section sleeve schematic view of the present application;

[0019] Figure 6 The protective cover schematic view of the present application.

[0020] In the figure: 1-base, 2-exhaust pipe, 3-middle section sleeve, 4-protective cover, 5-sealing ring, 11-base fixed thread, 12-center through hole, 31-sleeve outer thread, 32-sleeve inner thread, 33-circular ring fixed sheet, 41-protective cover inner thread, 42-clamping and flattening head. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0022] Please refer to Figures 1-6 In the present embodiment: a heat pipe head, comprising a base 1, an exhaust pipe 2, several middle section sleeves 3, a protective cover 4 and several sealing rings 5, as shown in Figure 4 The base 1 is a boss structure, and the upper part is provided with an outer thread, i.e. a base fixed thread 11, and a center through hole 12 is opened at the center position, as shown in Figure 2 The exhaust pipe 2 is an elongated hollow metal pipe, which is inserted and installed at the center through hole 12 and is gas-tightly welded with the base 1. After the exhaust pipe 2 is inserted, the part of the base 1 exposed is sequentially sleeved with several middle section sleeves 3 and a protective cover 4.

[0023] The structure of the middle section sleeve 3 is as shown in Figure 5As shown, its base material is a round tube with threads on both the top and bottom. The upper thread is the external thread 31 of the sleeve, and the lower thread is the internal thread 32 of the sleeve. A circular fixing plate 33 is installed on the top of the middle section sleeve 3. The inner diameter of the circular fixing plate 33 is the same as the outer diameter of the suction pipe 2. The suction pipe 2 passes through each circular fixing plate 33. Several middle section sleeves 3 are stacked and fitted on the base 1. The internal thread 32 of the bottom middle section sleeve 3 is threaded to the base fixing thread 11 of the base 1. Then, the external thread 31 of the bottom middle section sleeve 3 is threaded to the internal thread 32 of the upper middle section sleeve 3. The top middle section sleeve 3 is then connected to the protective cover 4. After several middle section sleeves 3 are connected, the circular fixing plates 33 are placed on the bottom ring of the inner boss of the previous middle section sleeve 3 or the protective cover 4, forming an internal limit for the suction pipe 2.

[0024] Protective shield 4 structure as follows Figure 6 As shown, its base material is a round tube of the same specification as that used in the middle section sleeve 3. It has a protective cover with an internal thread 41 at the bottom and a flattened end cap 42 at the top, which is made by flattening the round tube and welding the top center seam. A sealing ring 5 is provided on the bottom surface of the boss step of the base 1 and at the bottom of the external thread 31 of each middle section sleeve 3. The sealing ring 5 is installed as follows... Figures 2-4 As shown. When the heat pipe end cap is installed, the sealing ring 5 is flattened to ensure that all connections are sealed, and finally a seal is formed between the protective cover 4 and the exhaust pipe 2.

[0025] The structure after heat pipe end cap installation is as follows Figure 1 As shown, firstly, the sealing ring 5 is installed on the base 1 and each intermediate sleeve 3. The intermediate sleeve 3 is installed on the base 1 through the base fixing thread 11 and the sleeve internal thread 32. Multiple intermediate sleeves 3 can be installed on the intermediate sleeve 3 through the sleeve external thread 31 and the sleeve internal thread 32. After the air extraction pipe 2 passes through several intermediate sleeves 3 through the ring fixing piece 33, it is finally inserted into the central through hole 12 of the base 1. The air extraction pipe 2 and the lower part of the central through hole 12 are airtightly welded. The uppermost intermediate sleeve 3 is connected to the protective cover 4.

[0026] The working process of this utility model is as follows: After the heat pipe end cap is installed, when vacuuming is to be performed, first remove the protective cover 4 to expose a section of the suction pipe 2. After filling with working fluid, connect the suction pipe 2 to the vacuum machine for vacuuming. After the vacuum level reaches the required level, flatten the end of the suction pipe 2 and weld it to form a seal. Then reinstall the protective cover 4. The heat pipe production is completed.

[0027] After the heat pipe is operated for a period of time, the non-condensable gas in the pipe of the heat pipe is continuously increased, at this time, the heat pipe needs to be re-evacuated. When re-evacuating, the protective cover 4 is first removed, the cut-off tool is used to cut off the part of the evacuation pipe 2 which is clamped and welded, then the uppermost middle sleeve 3 is removed, the evacuation pipe 2 is connected to the vacuum machine for evacuation, after the vacuum degree reaches the requirement, the end of the evacuation pipe 2 is clamped and welded to form a seal, and the protective cover 4 is reinstalled. The heat pipe re-evacuation is completed.

[0028] The length of the evacuation pipe is determined according to the number of times of re-evacuation of the heat pipe, at the same time, the number of the matched middle sleeves is determined according to the length of the evacuation pipe. The diameter of the evacuation pipe is determined according to the evacuation rate requirement of the heat pipe, and according to different evacuation pipe diameters, the middle sleeves can be matched with different specifications of the annular fixing pieces.

[0029] The above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat pipe closure head characterized by: The base is provided with a central through hole in the center position, and the suction pipe is an elongated hollow metal pipe inserted into the central through hole.

2. A head for a heat pipe according to claim 1, characterised in that: The base is provided with a central through hole in the center position, and the suction pipe is an elongated hollow metal pipe inserted into the central through hole.

3. A head for a heat pipe according to claim 2, wherein: The base is provided with a central through hole in the center position, and the suction pipe is an elongated hollow metal pipe inserted into the central through hole.

4. A head for a heat pipe according to claim 3, wherein: The base is provided with a central through hole in the center position, and the suction pipe is an elongated hollow metal pipe inserted into the central through hole.

5. A head for a heat pipe according to claim 3, wherein: The base is provided with a central through hole in the center position, and the suction pipe is an elongated hollow metal pipe inserted into the central through hole.

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