WO2024088067A1 - 针阀连接结构 - Google Patents
针阀连接结构 Download PDFInfo
- Publication number
- WO2024088067A1 WO2024088067A1 PCT/CN2023/124127 CN2023124127W WO2024088067A1 WO 2024088067 A1 WO2024088067 A1 WO 2024088067A1 CN 2023124127 W CN2023124127 W CN 2023124127W WO 2024088067 A1 WO2024088067 A1 WO 2024088067A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connecting sleeve
- needle valve
- connection structure
- plane
- sleeve
- Prior art date
Links
- 238000003466 welding Methods 0.000 claims abstract description 39
- 230000004323 axial length Effects 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 5
- 239000010951 brass Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
Definitions
- the present application relates to the field of valve technology, and in particular to a needle valve connection structure.
- Needle valves are often used in pipeline systems to open or cut off pipeline channels. Needle valves include a valve seat and a valve tube built into the valve seat. When the valve needle is used in a pipeline system, the needle valve is often welded to the connecting pipe in the pipeline system through the valve tube. However, since the valve tube is long and has a relatively small diameter, the hardness of the valve tube may be reduced after welding, resulting in a low connection strength between the needle valve and the connecting pipe.
- a needle valve connection structure is provided.
- the present application provides a needle valve connection structure, comprising a needle valve, a connecting sleeve and a connecting pipe, wherein the connecting pipe is provided with a flanging hole, and the connecting sleeve is fixed to the connecting pipe by welding between the hole wall of the flanging hole and the connecting sleeve; an end of the connecting sleeve away from the flanging hole is welded and fixed to the needle valve.
- the axial length of the connecting sleeve is less than 25 mm.
- the needle valve is a brass needle valve
- the connecting sleeve is a copper sleeve
- the connecting pipe is a stainless steel pipe
- the axial length of the connecting sleeve is less than 10 mm.
- the needle valve has a valve seat, and along the axial direction of the connecting sleeve, part of the valve seat is located in the connecting sleeve, and the part of the valve seat located in the connecting sleeve forms a tube portion, and the tube portion is welded and fixed to the connecting sleeve.
- a plane is defined, the plane is perpendicular to the axis of the connecting pipe, and along the axial direction of the connecting pipe, the projection of the tube portion on the plane overlaps with the projection of the hole wall of the flanging hole on the plane.
- the end surface of the tube portion is arranged flush with the lower end surface of the connecting sleeve.
- a plane is defined, the plane is perpendicular to the axis of the connecting pipe, and the connecting pipe is In the axial direction of the through pipe, a preset gap is formed between the projection of the edge of the pipe opening of the pipe portion on the plane and the projection of the edge of the orifice of the flanging hole on the plane, and the distance of the preset gap is less than or equal to 3 mm.
- the valve seat has a step surface, the step surface is located above the tube portion, and the step surface can abut against the connecting sleeve to limit the valve seat to the connecting sleeve along the axial direction.
- a first welding portion is formed between the connecting sleeve and the valve seat, and an axial length of the first welding portion is greater than 4 mm.
- a second welding portion is formed between the connecting sleeve and the hole wall of the flanging hole, and an axial length of the second welding portion is greater than 2 mm.
- the melting point of the solder at the first soldering location is lower than the melting point of the solder at the second soldering location.
- FIG. 1 is a schematic diagram of a needle valve connection structure provided in the present application.
- FIG. 2 is a schematic diagram of another embodiment of the needle valve connection structure provided in the present application.
- first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
- a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium.
- a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
- a first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
- the present application provides a needle valve connection structure 100, including a needle valve 10, a connection sleeve 20 and a connecting pipe 30.
- the connecting pipe 30 is provided with a flange hole 31.
- the connecting sleeve 20 is fixed to the connecting pipe 30 by welding the hole wall 311 of the flange hole 31 and the connection sleeve 20.
- the end of the connection sleeve 20 away from the flange hole 31 is welded and fixed to the needle valve 10.
- the axial length of the connection sleeve 20 is less than 25 mm. In this way, the axial length of the connection sleeve 20 is shorter, the breaking torque becomes larger, and the connection strength between the needle valve 10 and the connecting pipe 30 can be improved.
- the needle valve 10 is set as a brass needle valve
- the connecting sleeve 20 is set as a copper sleeve
- the connecting pipe 30 is set as a stainless steel pipe. Since the melting point of brass is less than 900°C, and the welding temperature of a general stainless steel pipe is above 1000°C, the connecting sleeve 20 is set as a copper sleeve with a higher melting point, which can reduce the material cost of the pipeline system while meeting the welding temperature of the connecting pipe 30, so that the brass needle valve is welded to the stainless steel pipe through the copper sleeve.
- the needle valve 10 can be set as other materials such as copper or copper alloy
- the connecting sleeve 20 can be set as other materials such as stainless steel that can simultaneously weld the needle valve 10 and the connecting pipe 30, and the connecting pipe 30 can be set as other materials such as copper, etc., according to actual conditions.
- the axial length of the connecting sleeve 20 is less than 10 mm.
- the connecting sleeve 20 is roughly cylindrical, so that the connecting sleeve 20 overlaps the needle valve 10 and the connecting pipe 30 after installation. In this way, the distance between the needle valve 10 and the connecting pipe 30 is closer, the breaking torque of the connecting sleeve 20 is higher, it is easier to meet the strength requirements during use, and it is not easy to break, that is, the connection stability between the needle valve 10 and the connecting pipe 30 is better.
- the axial length of the connecting sleeve 20 can be 7 mm, 8mm, 9mm, etc.
- the connecting sleeve 20 can also be configured as a rectangular tube or other shapes that can be connected to the needle valve 10 and the connecting pipe 30 according to specific circumstances.
- the needle valve 10 has a valve seat 11. Along the axial direction of the connecting sleeve 20, part of the valve seat 11 is located inside the connecting sleeve 20, and the part of the valve seat 11 located inside the connecting sleeve 20 forms a tube portion 111, which is welded and fixed to the connecting sleeve 20.
- the connecting sleeve 20 is sleeved on the outer wall of the tube portion 111, so that the connecting sleeve 20 can be set with a larger diameter than the inner wall connected to the tube portion 111, thereby increasing the breaking torque of the connecting sleeve 20, making it less likely to break and having better anti-vibration performance.
- a step surface 12 is provided on the valve seat 11, and the step surface 12 is located above the pipe portion 111.
- the inner wall of the connecting sleeve 20 and the outer wall of the tube portion 111 of the valve seat 11 are in contact with each other, and a first welding portion 21 is formed at the contact point.
- the first welding portion 21 is roughly cylindrical.
- the axial length of the first welding portion 21 can be 5 mm, 6 mm, 7 mm, etc.
- the other end of the connecting sleeve 20 overlaps with the flanged hole 31 opened on the wall of the connecting pipe 30.
- the flanged hole 31 is roughly cylindrical, so that the flanged hole 31 can be installed in conjunction with the cylindrical structure of the connecting sleeve 20.
- the outer wall of the connecting sleeve 20 and the inner wall of the flanged hole 31 are partially in contact with each other to form a second welding portion 22.
- the second welding portion 22 is cylindrical, and the axial length is greater than 2mm. Specifically, the axial length of the second welding portion 22 can be 3mm, 4mm, 5mm, etc.
- the melting point of the solder at the first welding part 21 is lower than the melting point of the solder at the second welding part 22, so that the first welding part 21 and the second welding part 22 are adapted to different welding methods.
- Furnace brazing is performed at the second welding part 22 to weld the inner wall of the flange hole 31 and the outer wall of the connecting sleeve 20, and then flame welding is performed at the first welding part 21 to weld the outer wall of the pipe part 111 and the inner wall of the connecting sleeve 20, so as to achieve fixed overlap of the connecting sleeve 20 between the needle valve 10 and the connecting pipe 30.
- a plane 101 is defined.
- the plane 101 is perpendicular to the axis 102 of the connecting pipe 30.
- the projection of the tube wall of the tube portion 111 on the valve seat 11 on the plane 101 overlaps with the projection of the hole wall 311 of the flange hole 31 on the plane 101. That is, along the axial direction of the connecting sleeve 20, the edge of the tube opening of the tube portion 111 is lower than the edge of the hole opening of the flange hole 31, so that the tube wall of the tube portion 111 and the hole wall 311 of the flange hole 31 partially overlap on both sides of the connecting sleeve 20.
- the overall wall thickness of the overlapping part is increased, which can increase the breaking torque, thereby
- the overall connection strength of the connecting sleeve 20 is improved, making it difficult for the needle valve 10 to be twisted off.
- the projection of the tube wall of the tube portion 111 and the projection of the hole wall 311 may also be arranged to be non-overlapping.
- a plane 101 is defined, and the plane 101 is perpendicular to the axis 102 of the connecting tube 30.
- a preset gap 103 is formed between the projection of the edge of the tube mouth of the tube portion 111 on the plane 101 and the projection of the edge of the hole mouth of the flange hole 31 on the plane 101.
- the distance of the preset gap 103 is less than or equal to 3 mm.
- the edge of the tube mouth of the tube portion 111 is not higher than the edge of the hole mouth of the flange hole 31 by 3 mm, so as to avoid the connecting sleeve 20 from breaking due to insufficient strength.
- the distance value of the preset gap 103 can be 1 mm, 2 mm, 3 mm, etc.
- the end face of the connecting sleeve 20 away from the needle valve 10 is the lower end face 23, and along the axial direction of the connecting sleeve 20, the bottom end face 1111 (i.e., the free end face) of the tube portion 111 is flush with the lower end face of the connecting sleeve 20.
- the flush setting makes the overlap depth between the connecting sleeve 20 and the needle valve 10 deeper, thereby improving the connection stability between the needle valve 10 and the connecting sleeve 20.
- the needle valve connection structure 100 for which protection is sought in the present application improves the connection structure of the valve pipe commonly used in the traditional piping system, and a connecting sleeve 20 is arranged to overlap between the needle valve 10 and the connecting pipe 30.
- the connecting sleeve 20 has a shorter axial length and a larger diameter, thereby improving the connection strength between the needle valve 10 and the connecting pipe 30.
- the breaking torque of the connecting sleeve 20 is higher, and the needle valve 10 is not easy to twist off. Even when the compressor is working, the connecting sleeve 20 is not easy to break and is more resistant to vibration.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Lift Valve (AREA)
Abstract
一种针阀连接结构（100），包括针阀（10）、连接套（20）及连通管（30），连通管（30）上开设有翻边孔（31），通过翻边孔（31）的孔壁（311）与连接套（20）之间的焊接，以将连接套（20）固定至连通管（30）上；连接套（20）上远离翻边孔（31）的一端与针阀（10）焊接固定；其中，连接套（20）的轴向长度小于25mm。这种针阀结构通过设置连接套搭接在针阀和连通管之间，连接套的轴向长度更短，直径更大，提高了针阀和连通管之间的连接强度，连接套的破坏力矩更高，针阀不易拧断，即使在压缩机工作的状态下，连接套也不容易断裂，更耐振动。
Description
相关申请
本申请要求2022年10月26日申请的，申请号为202222837892.3，名称为“针阀连接结构”的中国专利申请的优先权，在此将其全文引入作为参考。
本申请涉及阀技术领域，特别是涉及一种针阀连接结构。
针阀常用于管路系统中，起到开启或切断管路通道的作用。针阀包括阀座和内置于阀座的阀管，在阀针应用于管路系统时，针阀常通过阀管与管路系统中的连通管焊接连接，但由于阀管长度较长，直径相对较小，因此在焊接后可能会导致阀管的硬度降低，从而使针阀与连通管之间的连接强度不高。
发明内容
根据本申请的各种实施例，提供一种针阀连接结构。
本申请提供一种针阀连接结构，包括针阀、连接套及连通管，所述连通管上开设有翻边孔，通过所述翻边孔的孔壁与所述连接套之间的焊接，以将所述连接套固定至所述连通管上；所述连接套上远离所述翻边孔的一端与所述针阀焊接固定。
其中，所述连接套的轴向长度小于25mm。
在其中一个实施例中，所述针阀为黄铜针阀，所述连接套为紫铜套，所述连通管为不锈钢管，所述连接套的轴向长度小于10mm。
在其中一个实施例中，所述针阀具有阀座，沿所述连接套的轴向，所述阀座的部分位于所述连接套内，所述阀座位于所述连接套内的部分形成管部，所述管部与所述连接套焊接固定。
在其中一个实施例中，定义一平面，所述平面与所述连通管的轴线垂直，沿着所述连通管的轴向方向，所述管部在所述平面上的投影与所述翻边孔的孔壁在所述平面上的投影重叠设置。
在其中一个实施例中，沿所述连接套的轴向方向，所述管部的端面与所述连接套的下端面齐平设置。
在其中一个实施例中，定义一平面，所述平面与所述连通管的轴线垂直，沿着所述连
通管的轴向方向，所述管部的管口边沿在所述平面上的投影与所述翻边孔的孔口边沿在所述平面上的投影之间形成有预设间隙，所述预设间隙的距离小于等于3mm。
在其中一个实施例中，所述阀座具有台阶面，所述台阶面位于所述管部的上方，所述台阶面能够抵碰于所述连接套，以将所述阀座沿轴向限位至所述连接套。
在其中一个实施例中，所述连接套与所述阀座之间形成第一焊接部位，所述第一焊接部位的轴向长度大于4mm。
在其中一个实施例中，所述连接套与所述翻边孔的孔壁之间形成第二焊接部位，所述第二焊接部位的轴向长度大于2mm。
在其中一个实施例中，所述第一焊接部位处焊料的熔点低于所述第二焊接部位处焊料的熔点。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅是本申请的一些实施例，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请提供的针阀连接结构的示意图。
图2为本申请提供的针阀连接结构的另一实施例的示意图。
附图标记：100、针阀连接结构；10、针阀；11、阀座；111、管部；1111、端面；12、台阶面；20、连接套；21、第一焊接部位；22、第二焊接部位；23、下端面；30、连通管；31、翻边孔；311、孔壁；101、平面；102、轴线；103、预设间隙。
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
需要说明的是，当组件被称为“固定于”或“设置于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直
接连接到另一个组件或者可能同时存在居中组件。本申请的说明书所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”、“下”可以是第一特征直接和第二特征接触，或第一特征和第二特征间接地通过中间媒介接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅表示第一特征水平高度小于第二特征。
除非另有定义，本申请的说明书所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。本申请的说明书所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1，本申请提供一种针阀连接结构100，包括针阀10、连接套20及连通管30，连通管30开设有翻边孔31，通过翻边孔31的孔壁311与连接套20之间的焊接，以将连接套20固定至连通管30；连接套20远离翻边孔31的一端与针阀10焊接固定；其中，连接套20的轴向长度小于25mm。如此设置，使得连接套20的轴向长度较短，破坏力矩变大，进而能够提高针阀10与连通管30之间的连接强度。
在一实施例中，针阀10设置为黄铜针阀，连接套20设置为紫铜套，连通管30设置为不锈钢管。由于黄铜的熔点＜900℃，而一般的不锈钢管焊接温度在1000℃以上，因此连接套20设置为熔点较高的紫铜套，能够在降低管路系统的材料成本的同时满足连通管30的焊接温度，使黄铜针阀通过紫铜套与不锈钢管焊接。当然，在其他实施例中，针阀10可设置为紫铜或铜合金等其他材质，连接套20可设置为不锈钢等其他可同时焊接针阀10和连通管30的材质，连通管30可设置为紫铜等其他材质，根据实际情况选择。
在一实施例中，连接套20的轴向长度小于10mm。连接套20大致呈圆筒状，使得安装后的连接套20搭接针阀10和连通管30。如此，使得针阀10与连通管30之间的距离更近，连接套20的破环力矩更高，更容易满足使用时的强度要求，不易断裂，也即使得针阀10和连通管30之间的连接稳定性更好。具体地，连接套20的轴向长度取值可以为7mm、
8mm、9mm等。当然，连接套20也可以根据具体情况设置为矩形筒状等其他能够与针阀10和连通管30连接的形状。
如图1所示，针阀10具有阀座11，沿连接套20的轴向，阀座11的部分位于连接套20内，且阀座11位于连接套20内的部分形成管部111，管部111与连接套20焊接固定。也就是说，将连接套20套设在管部111的外壁，使得连接套20相较于内接在管部111的内壁而言能设置更大的直径，进而使得连接套20的破坏力矩提高，不易折断，抗振动性能更好。
阀座11上设有台阶面12，台阶面12位于管部111的上方，阀座11与连接套20装配时，使得连接套20能够抵碰于台阶面12，以将阀座11沿连接套20的轴向方向限位，便于阀座11和连接套20之间的装配和焊接。
连接套20的内壁与阀座11的管部111外壁相互贴靠，贴靠处形成第一焊接部位21，第一焊接部位21大致呈圆柱面状。通过设置第一焊接部位21的轴向长度大于4mm，保证了足够的焊接深度，使连接套20和管部111之间稳定连接，从而使得针阀10和连接套20之间的焊接强度满足使用要求。具体地，第一焊接部位21的轴向长度可以是5mm、6mm、7mm等。
连接套20的另一端与连通管30管壁上开设的翻边孔31搭接，翻边孔31大致呈圆筒状，使得翻边孔31能够配合连接套20的圆筒状结构进行安装。连接套20的外壁与翻边孔31的孔内壁之间部分相互贴靠，形成第二焊接部位22。第二焊接部位22呈圆柱面状，轴向长度大于2mm。具体地，第二焊接部位22的轴向长度的取值可以是3mm、4mm、5mm等。通过设置连接套20和翻边孔31之间的第二焊接部位22轴向长度满足设定值，使得连接套20和连通管30之间的焊接强度满足使用要求。
进一步地，第一焊接部位21处焊料的熔点低于第二焊接部位22处焊料的熔点，使得第一焊接部位21和第二焊接部位22适应不同的焊接方式。在第二焊接部位22实施炉中钎焊，将翻边孔31的孔内壁和连接套20的外壁焊接固定，然后在第一焊接部位21实施火焰焊接，将管部111的外壁和连接套20的内壁焊接固定，以此实现连接套20在针阀10和连通管30之间的固定搭接。
请参见图1，在一实施例中，定义一平面101，该平面101与连通管30的轴线102垂直，沿着连通管30的轴向方向，阀座11上的管部111的管壁在该平面101上的投影与翻边孔31的孔壁311在该平面101上的投影重叠设置。也就是说，沿着连接套20的轴向方向，管部111的管口边沿低于翻边孔31的孔口边沿，使得管部111的管壁和翻边孔31的孔壁311在连接套20的两侧部分重叠。重叠部分的整体壁厚增大，能够提高破坏力矩，从
而令连接套20的总体连接强度提高，使针阀10不易被拧断。
请参见图2，当然，作为其他实施例，管部111管壁的投影与孔壁311的投影还可以不重叠设置，如在一实施例中，定义一平面101，该平面101与连通管30的轴线102垂直，沿着连通管30的轴向方向，管部111的管口边沿在该平面101上的投影与翻边孔31的孔口边沿在该平面101上的投影之间形成有预设间隙103，预设间隙103的距离小于等于3mm。也就是说，沿着连接套20的轴向方向，管部111的管口边沿不高于翻边孔31的孔口边沿3mm，避免连接套20因强度不足而断裂。具体地，预设间隙103的距离数值可取1mm、2mm、3mm等。
定义沿连接套20的轴向，连接套20远离针阀10的端面为下端面23，沿着连接套20的轴向方向，管部111的底部端面1111(即自由端面)与连接套20的下端面齐平，齐平设置使得连接套20与针阀10之间的搭接深度更深，提高针阀10和连接套20之间的连接稳定性。
综上，本申请请求保护的针阀连接结构100，改进了传统的管路系统中常用的阀管的连接结构，设置连接套20搭接在针阀10和连通管30之间，连接套20的轴向长度更短，直径更大，提高了针阀10和连通管30之间的连接强度，连接套20的破坏力矩更高，针阀10不易拧断，即使在压缩机工作的状态下，连接套20也不容易断裂，更耐振动。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请的专利保护范围应以所附权利要求为准。
Claims (10)
- 一种针阀连接结构，其特征在于，包括针阀、连接套及连通管，所述连通管上开设有翻边孔，通过所述翻边孔的孔壁与所述连接套之间的焊接，以将所述连接套固定至所述连通管上；所述连接套上远离所述翻边孔的一端与所述针阀焊接固定；其中，所述连接套的轴向长度小于25mm。
- 根据权利要求1所述的针阀连接结构，其中，所述针阀为黄铜针阀，所述连接套为紫铜套，所述连通管为不锈钢管，所述连接套的轴向长度小于10mm。
- 根据权利要求1或2所述的针阀连接结构，其中，所述针阀具有阀座，沿所述连接套的轴向，所述阀座的部分位于所述连接套内，所述阀座位于所述连接套内的部分形成管部，所述管部与所述连接套焊接固定。
- 根据权利要求3所述的针阀连接结构，其中，定义一平面，所述平面与所述连通管的轴线垂直，沿着所述连通管的轴向方向，所述管部在所述平面上的投影与所述翻边孔的孔壁在所述平面上的投影重叠设置。
- 根据权利要求4所述的针阀连接结构，其中，沿所述连接套的轴向方向，所述管部的端面与所述连接套的下端面齐平设置。
- 根据权利要求3所述的针阀连接结构，其中，定义一平面，所述平面与所述连通管的轴线垂直，沿着所述连通管的轴向方向，所述管部的管口边沿在所述平面上的投影与所述翻边孔的孔口边沿在所述平面上的投影之间形成有预设间隙，所述预设间隙的距离小于等于3mm。
- 根据权利要求3所述的针阀连接结构，其中，所述阀座具有台阶面，所述台阶面位于所述管部的上方，所述台阶面能够抵碰于所述连接套，以将所述阀座沿轴向限位至所述连接套。
- 根据权利要求3所述的针阀连接结构，其中，所述连接套与所述阀座之间形成第一焊接部位，所述第一焊接部位的轴向长度大于4mm。
- 根据权利要求8所述的针阀连接结构，其中，所述连接套与所述翻边孔的孔壁之间形成第二焊接部位，所述第二焊接部位的轴向长度大于2mm。
- 根据权利要求9所述的针阀连接结构，其中，所述第一焊接部位处焊料的熔点低于所述第二焊接部位处焊料的熔点。
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| CN201803538U (zh) * | 2010-09-15 | 2011-04-20 | 天津华信机械有限公司 | 一种空调器管组件中的针阀连接结构 |
| CN103174860A (zh) * | 2011-12-22 | 2013-06-26 | 浙江三花股份有限公司 | 一种接管与阀座的固定结构 |
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| CN217058040U (zh) * | 2022-02-16 | 2022-07-26 | 广东美的暖通设备有限公司 | 管路装置及具有其的制冷系统 |
| CN219139966U (zh) * | 2022-10-26 | 2023-06-06 | 浙江盾安禾田金属有限公司 | 针阀连接结构 |
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| KR20020023207A (ko) * | 2001-12-31 | 2002-03-28 | 곽영대 | 분기밸브 |
| CN201803538U (zh) * | 2010-09-15 | 2011-04-20 | 天津华信机械有限公司 | 一种空调器管组件中的针阀连接结构 |
| CN103174860A (zh) * | 2011-12-22 | 2013-06-26 | 浙江三花股份有限公司 | 一种接管与阀座的固定结构 |
| CN216158525U (zh) * | 2021-09-22 | 2022-04-01 | 浙江盾安人工环境股份有限公司 | 连接管组件及具有其的控制阀组件 |
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| CN219139966U (zh) * | 2022-10-26 | 2023-06-06 | 浙江盾安禾田金属有限公司 | 针阀连接结构 |
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