WO2023109504A1 - 截止阀及其制冷系统 - Google Patents

截止阀及其制冷系统 Download PDF

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Publication number
WO2023109504A1
WO2023109504A1 PCT/CN2022/135061 CN2022135061W WO2023109504A1 WO 2023109504 A1 WO2023109504 A1 WO 2023109504A1 CN 2022135061 W CN2022135061 W CN 2022135061W WO 2023109504 A1 WO2023109504 A1 WO 2023109504A1
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WO
WIPO (PCT)
Prior art keywords
valve
sealing member
groove
connecting portion
valve port
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Application number
PCT/CN2022/135061
Other languages
English (en)
French (fr)
Inventor
楼峰
冯光华
周峰
寿杰
Original Assignee
浙江盾安人工环境股份有限公司
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Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to EP22906254.2A priority Critical patent/EP4450855A1/en
Priority to KR1020247020855A priority patent/KR20240110851A/ko
Publication of WO2023109504A1 publication Critical patent/WO2023109504A1/zh

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • 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
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves

Definitions

  • the application relates to the technical field of refrigeration, in particular to a shut-off valve and a refrigeration system thereof.
  • the stop valve In the refrigeration system, the stop valve is used to cut off and throttle the medium in the pipeline where it is located.
  • the opening and closing part of the stop valve is the valve core, which is mainly used to cut off the medium in the low temperature environment.
  • the valve core and the valve seat are often squeezed to achieve a first-line hard seal.
  • first-line hard seal it is necessary to use soft materials to prepare the valve core and valve seat, otherwise the problem of poor sealing and leakage will easily occur, so the application of the existing globe valve is limited.
  • a globe valve comprising: a hollow valve body, a valve seat is arranged in the valve body, and a valve port is opened on the valve seat; a valve core, at least a part of the valve core is arranged inside the valve body, and It can move along the axial direction of the valve body to block or unblock the valve port; the valve core includes a connecting part and a guiding part connected to each other, and the guiding part is arranged near the connecting part One end of the valve port can extend into the valve port, and one end of the connecting part close to the guide part is provided with a third seal, the third seal can abut against the valve seat, the The guide is at least partially pressed against the third seal.
  • the guide portion limits the third sealing member in the connection portion, avoiding the problem that the third sealing member is easy to fall off.
  • the area where the guide portion is pressed on the third sealing member accounts for 15%-50% of the area of the side of the third sealing member facing the valve port.
  • Such setting can ensure the position-limiting effect of the guide part on the third seal and prevent the third seal from falling off; and while saving the material of the guide part, enough space is reserved for the third seal so that it can abut against the valve seat. catch.
  • the area where the guide portion is pressed on the third sealing member accounts for 30%-40% of the area of the side of the third sealing member facing the valve port.
  • the guiding part and the connecting part are integrally provided.
  • the guide part can be assembled after the third seal is installed, so that it can be pressed on the third seal; and the separate arrangement can cut the connecting part and the guide part separately, reduce the amount of cutting, and improve the processing efficiency .
  • the connecting portion is provided with a second groove on the side facing the guiding portion
  • the guiding portion includes a first section and a boss
  • the first section is arranged on the side facing the boss.
  • One end of the connection part is embedded in the second groove and connected to the inner wall of the second groove, and the boss is connected to the side of the first section away from the connection part, and can into the valve port.
  • the guide part is provided with a second groove on one side facing the connecting part, and one end of the connecting part is embedded in the second groove and is connected to the inner wall of the second groove. connect.
  • a second groove is provided on a side of the connecting portion facing the guiding portion, and the guiding portion is bolted or screwed to an inner wall of the second groove.
  • a second groove is formed on a side of the guide portion facing the connecting portion, and the connecting portion is bolted or screwed to an inner wall of the second groove.
  • the bolt connection or screw connection can ensure the connection strength between the guide part and the second groove, and can be disassembled, so as to facilitate the disassembly and installation of the third sealing member.
  • the guide portion protrudes into the valve port to a depth of at least 1 mm.
  • Such arrangement ensures the matching strength and sealing performance between the guide part and the valve port, and prevents the valve core from being loosely sealed to the valve port due to too shallow insertion.
  • the inner diameter of the valve port is set corresponding to the outer diameter of the guide part, and the outer wall of the guide part is in contact with the inner wall of the valve port.
  • the guide part can guide the valve core to be inserted into the valve port to avoid bias; the guide part abuts against the inner wall of the valve port to enhance the sealing performance.
  • the material of the third sealing member is copper or plastic.
  • the copper and plastic can have a certain flexibility while ensuring the strength, thereby enhancing the sealing performance.
  • the present application also provides a refrigeration system, including the above-mentioned shut-off valve.
  • Fig. 1 is a cross-sectional view of an embodiment of the shut-off valve provided by the present application.
  • Fig. 2 is a cross-sectional view of an embodiment of the shut-off valve provided by the present application.
  • Fig. 3 is a front view of a valve core of an embodiment of the shut-off valve provided by the present application.
  • Fig. 4 is a cross-sectional view of a valve core of an embodiment of the shut-off valve provided by the present application.
  • Fig. 5 is a perspective view of the shut-off valve provided by the present application.
  • Fig. 6 is a front view of the shut-off valve provided by the present application.
  • Fig. 7 is a top view of the shut-off valve provided by the present application.
  • Fig. 8 is a cut-off left view provided by the present application.
  • a component when referred to as being “mounted on” another component, it can be directly on the other component or intervening components can also be present.
  • a component When a component is said to be “set on” another component, it may be set directly on the other component or there may be an intervening component at the same time.
  • a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may be an intervening component at the same time.
  • this shut-off valve 100 is installed in the refrigeration system, and is used to realize the connection and cut-off of pipelines.
  • the globe valve 100 includes a valve body 10 and a valve core 20 , and the valve body 10 is connected to the valve core 20 .
  • the interior of the valve body 10 is hollow for accommodating components such as the valve core 20 ; at least a part of the valve core 20 is disposed inside the valve body 10 and can move axially along the valve body 10 .
  • the valve body 10 is also provided with a first opening 11 and a second opening 12 .
  • the first opening 11 and the second opening 12 are opened on the lower side and the right side of the valve body 10 .
  • the side of the first opening 11 away from the valve body 10 is connected with a first communication pipe 13, and the first opening 11 communicates with the outside world through the first communication pipe 13; the side of the second opening 12 away from the valve body 10 is connected with a second communication pipe 14 , the second opening 12 communicates with the outside through the second communication pipe 14 .
  • the first communication pipe 13 and the second communication pipe 14 serve as the inlet or outlet of the medium respectively.
  • the medium enters the shut-off valve 100 from the first communication pipe 13 and enters the interior of the valve body 10 through the first opening 11. If the shut-off valve 100 is in an open state, the medium passes through the second opening 12 , flow out of the shut-off valve 100 through the second communication pipe 14; vice versa, the medium can also enter the valve body 10 from the second communication pipe 14 through the second opening 12, and then flow out of the shut-off valve through the first opening 11 and the first communication pipe 13 100.
  • the positions of the first opening 11 and the second opening 12 are not limited to being opened on the lower side and the right side of the valve body 10 in this embodiment.
  • the first opening 11 and the second opening 12 can also be arranged on the left and right sides, the upper and lower sides, etc. of the valve body 10, as long as the axial movement of the valve core 20 can realize the gap between the two valve ports. can be connected or truncated.
  • the valve body 10 also includes a main body 16, an end cover 15 and a valve seat 17.
  • the main body 16 is located on the side of the valve body 10 away from the first opening 11, opposite to the first opening 11, and The first opening 11 is coaxial.
  • the main body 16 is used to limit the spool 20, so that the spool 20 can move axially along the main body 16, so as to realize the transition between the open state and the closed state of the cut-off valve 100 .
  • the end cover 15 is located at the top of the main body 16, and cooperates with the valve core 20 to seal the valve body 10, so as to prevent foreign dust and powder and other impurities from entering the valve body 10, affecting the sealing performance of the shut-off valve 100 switch valve and entering the valve body 10.
  • the valve seat 17 is disposed in the main body 16 and is used to abut and fit with the valve core 20 to realize communication or isolation inside the valve body 10 .
  • the valve seat 17 is disposed at the first opening 11 , and in other embodiments, the valve seat 17 may also be disposed between the first opening 11 and the second opening 12 .
  • the end cap 15 can also be disposed inside the main body 16, that is, the outer peripheral side of the end cap 15 abuts against the inner peripheral side of the main body 16, and the inner peripheral side of the end cap 15 abuts against the outer peripheral side of the valve core 20 , set in this way, the cooperation between the end cover 15 and the valve core 20 can also play the role of sealing the valve body 10 .
  • the position of the end cap 15 is not limited to the solution described in this embodiment, as long as the above functions can be realized.
  • valve port 171 is opened on the valve seat 17, and the valve port 171 communicates with the first opening 11 to jointly form a channel for the medium to flow in or out.
  • the valve seat 17 is provided separately from the valve body 10 to reduce the difficulty of processing.
  • the valve seat 17 can also be directly formed by the valve body 10 .
  • the valve core 20 includes an operating part 21 , a connecting part 22 and a guiding part 23 .
  • One end of the operation part 21 is connected with a connection part 22, and the other end protrudes from the end cover 15; the connection part 22 is located between the operation part 21 and the guide part 23, and connects the operation part 21 and the guide part 23; the guide part 23 and the connection part 22 are far away from the operation
  • One end of the connecting part 21 is connected and moves axially with the operating part 21 and the connecting part 22 .
  • the connection part 22 and the guide part 23 are provided separately and processed separately, so as to reduce the processing time and cutting amount, and reduce the cost.
  • the operating part 21 protrudes from the upper surface of the end cover 15, which is easy to process and disassemble.
  • the operation part 21 is set as a hollow structure with an open upper end, and a plurality of planes are evenly distributed on the inner surface of the operation part 21 at intervals, so as to be suitable for tools such as hexagon wrench.
  • the planes of the inner surface of the operating portion 21 may also be set to be uniformly distributed without intervals, so as to be suitable for wrenches with irregular shapes.
  • the connecting part 22 is located between the operating part 21 and the guiding part 23 , is driven by the operating part 21 , and rotates synchronously with the operating part 21 .
  • the outer peripheral side of the operating part 21 has a first threaded segment 211 , and the inner surface of the valve body 10 is provided with a second threaded segment 151 matched with the first threaded segment 211 .
  • the operating part 21 is operated and rotated by an external machine or tool, thereby driving the first threaded segment 211 to rotate in the circumferential direction, and the first threaded segment 211 cooperates with the second threaded segment 151 to make the operating part 21 carry out axial lifting movement , the operating part 21 drives the connecting part 22 connected thereto, and the connecting part 22 drives the guiding part 23 connected thereto, finally realizing the axial movement of the spool 20 .
  • the second threaded segment 151 can also be provided on the inner surface of the end cap 15, and the second threaded segment 151 on the inner peripheral side of the end cap 15 cooperates with the first threaded segment 211 on the outer peripheral side of the operating part 21 to make the connecting part 22 axial movement.
  • the connecting portion 22 is connected to one end of the operating portion 21 facing the valve port 171 , and the outer wall of the connecting portion 22 abuts against the inner wall of the main body 16 so that the valve core 20 can move axially along the inner wall of the main body 16 .
  • the diameter of the connection part 22 is larger than the diameter of the operation part 21, so that a step is formed between the connection part 22 and the operation part 21, and a first seal 25 is provided on the step, and the first seal 25 can abut against the end cap 15 close to the One side of the connecting portion 22.
  • One end of the connecting portion 22 close to the operating portion 21 is also provided with a second sealing member 26 , the second sealing member 26 surrounds the outer peripheral side of the connecting portion 22 in the circumferential direction, and the outer peripheral side of the second sealing member 26 abuts against the main body 16 in the circumferential direction.
  • the inner wall is used to seal the valve body 10 so that the medium will not leak during the communication process between the first opening 11 and the second opening 12 .
  • the second sealing member 26 can also be replaced by a sealing gasket and other components that can also play a sealing role.
  • a first groove 221 and a second groove 222 are formed at an end of the connecting portion 22 close to the valve port 171 .
  • the second groove 222 is located at the end of the connecting portion 22 close to the valve port 171 for connecting the guide portion 23; the first groove 221 is located on the end face of the second groove 222 facing the notch of the valve port 171, surrounding the first groove
  • the groove 221 is used for inserting the third sealing member 233 .
  • the second groove 222 is a cylindrical groove, and the second groove 222 is coaxial with the connecting part 22 and the guiding part 23 .
  • the second groove 222 can also be set in other shapes, such as a cube shape, as long as it can be mated with the guide part 23 .
  • the first groove 221 is an annular groove disposed around the second groove 222 .
  • the shape and depth of the first groove 221 should be adjusted according to the shape and size of the third sealing member 233, that is, it is necessary to ensure that after the third sealing member 233 is embedded in the first groove 221, when the shut-off valve 100 is closed, the third sealing The piece 233 can abut against the valve seat 17 and can seal the valve port 171 .
  • the guide part 23 is located at the end of the connecting part 22 close to the first opening 11 , and is used for guiding the valve core 20 to be inserted into the valve port 171 to realize the sealing fit between the valve core 20 and the valve port 171 .
  • the guide part 23 includes a first section 231 and a boss 232 .
  • the first section 231 is located on the side of the guide part 23 close to the connecting part 22, and is used for fixedly connecting the guide part 23 and the connecting part 22.
  • the boss 232 is located on a side of the guide portion 23 facing the valve port 171 , and is used for guiding the valve core 20 to be inserted into the valve port 171 .
  • the first section 231 and the boss 232 are set separately, so that the guide part 23 can be assembled after the installation of the third sealing member 233 is completed, so that it can be pressed on the On the third sealing member 233; and the separate arrangement can cut the connection part 22 and the guide part 23 separately, reduce the amount of cutting, and improve the processing efficiency.
  • the first section 231 and the boss 232 are integrated, so as to increase the structural stability of the valve core 20 .
  • first section 231 is inserted into the second groove 222 and connected with the inner wall of the second groove 222 by bolts or threads.
  • the connection method between the first section 231 and the second groove 222 is not limited to the connection method described in this embodiment, as long as the fixed connection between the guide part 23 and the connection part 22 can be realized.
  • a second groove 222 may also be provided on the guide part 23, and one end of the connecting part 22 is inserted into the second groove 222 and connected to the inner wall of the second groove 222.
  • This implementation The connection method of the example is the same as the connection method described above, and will not be repeated here.
  • the boss 232 is pressed on the third sealing member 233, so that after the third sealing member 233 is embedded in the first groove 221, in addition to being limited by the circumferential direction of the first groove 221, its side facing the valve port 171 also It will be limited by the abutment of the boss 232 , that is, the four directions of the third seal 233 are effectively limited, and it is not easy to fall off from the first groove 221 , so as to realize the hard seal of the valve core 20 .
  • the area where the boss 232 is pressed on the third sealing member 233 accounts for 15%-50% of the area of the side of the third sealing member 233 facing the valve port 171, which can not only strengthen the pressing strength, but also can The third sealing member 233 is made to abut against the valve seat 17 .
  • the area where the boss 232 presses on the third sealing member 233 accounts for 30%-40% of the area of the surface of the third sealing member 233 facing the valve port 171 .
  • the outer diameter of the boss 232 is set corresponding to the inner diameter of the valve port 171.
  • the boss 232 can extend into the valve port 171, thereby guiding the axial movement of the valve core 20. , and the boss 232 is limited by the valve port 171 in the circumferential direction, which increases the stability of the closed state of the shut-off valve 100 .
  • the side wall of the boss 232 and the bottom wall of the boss 232 facing the valve port 171 are connected by rounded corners. Such setting can avoid stress concentration and increase strength.
  • the guide effect of the rounded structure is better when inside.
  • the outer peripheral side of the boss 232 abuts against the inner wall of the valve port 171 in the circumferential direction, so as to enhance the limiting effect on the boss 232 .
  • the depth of the protrusion 232 inserted into the valve port 171 is at least 1mm, such as 2mm, 3mm, 4mm and so on. Such setting makes the insertion depth of the guide part 23 into the valve port 171 within an appropriate range, and the performance of cutting off the medium will not be insufficient due to the shallow insertion depth.
  • An annular projection 111 corresponding to the third seal 233 is provided on the end surface of the valve seat 17 facing the valve core 20.
  • the third seal 233 will cooperate with the above-mentioned annular projection 111 to seal the valve. Mouth 171.
  • the shape of the annular protrusion 111 facing the third sealing member 233 is a smooth arc, so as to avoid damage to the third sealing member 233 and ensure the contact between the annular protrusion 111 and the third sealing member 233 sealing performance.
  • the shape of the side of the annular protrusion 111 facing the third sealing member 233 can also be set as a rectangle, a triangle, etc., which can also ensure the sealing performance.
  • the third sealing member 233 is made of red copper to ensure the sealing performance between the third sealing member 233 and the valve port 171.
  • the third sealing member 233 can also be made of hard plastic and other materials that can also ensure the sealing performance.
  • the stop valve 100 further includes a valve assembly 30 connected to the main body 16 .
  • the air valve assembly 30 is arranged opposite to the second opening 12, and serves as an air charging inlet or an air discharge outlet, and is used for supplementing or releasing medium to the entire refrigeration system.
  • the axis of the valve assembly 30 can also be arranged perpendicular to the axis of the second opening 12 , and the valve assembly 30 can also be arranged at other positions of the main body 16 .
  • the valve assembly 30 includes a connecting body 33 connected to the main body 16 , and the connecting body 33 serves as a channel for the medium to enter the valve body 10 .
  • the valve assembly 30 also includes a valve core 35 , a casing 31 and a fourth seal 32 .
  • the valve core 35 is arranged in the connecting body 33, which can make the inside of the main body 16 communicate with or isolate the inside of the connecting body 33.
  • the casing 31 is sleeved on the outer peripheral side of the connecting body 33 to protect the valve core 35 and prevent external impurities from entering ;
  • the fourth seal 32 is located between the casing 31 and the connecting body 33 , and cooperates with the casing 31 to seal the connecting body 33 .
  • one end of the valve core 35 is provided with an elastic member 34, and when the valve core 35 is not subjected to external pressure, it will remain closed. At this time, the connecting body 33 remains sealed to isolate the inside of the valve body 10 from the outside world.
  • the valve core 35 squeezes the elastic member 34 and moves towards the direction close to the main body 16, thereby releasing the blockage, so that the inside of the main body 16 communicates with the inside of the connecting body 33, so that the medium can pass into the valve. body 10 or flow out of the valve body 10.
  • the elastic member 34 is used for the reset of the valve core 35 .
  • the present application also provides a refrigeration system, including the shut-off valve 100 mentioned above.
  • the shut-off valve 100 is installed in the medium passage of the refrigeration system to control the cut-off and circulation of the passage, and to supplement the medium to the refrigeration system.
  • Fig. 1 and Fig. 5-Fig. 8 in the working process of the shut-off valve 100 of this embodiment, when the shut-off valve 100 needs to close the valve, twist the operating part 21 on the top of the shut-off valve 100, the operating part 21 and the connecting part 22 rotate synchronously, through the cooperation of the first threaded section 211 and the second threaded section 151, the connecting part 22 drives the valve core 20 to move axially relative to the end cover 15, so that the guide part 23 at the bottom end of the valve core 20 is inserted into the valve port 171 , the third sealing member 233 abuts against the valve seat 17 to seal the first communication pipe 13 , so as to realize the blocking between the first communication pipe 13 and the second communication pipe 14 .
  • the guide part 23 on the valve core 20 of the present application is pressed against the third sealing member 233 , which realizes the hard sealing of the valve core 20 and prevents the third sealing member 233 from falling off.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

一种截止阀，包括：中空的阀体（10），阀体（10）内设有阀座（17），阀座（17）上开设有阀口（171）；阀芯（20），阀芯（20）的至少一部分设置在阀体（10）内部，并能够沿着阀体（10）的轴向移动，以将封堵阀口（171）或解除封堵；阀芯（20）包括相互连接的连接部（22）和引导部（23），引导部（23）设于连接部（22）靠近阀口（171）的一端并能够伸入阀口（171）内，连接部（22）靠近引导部（23）的一端设有第三密封件（233），第三密封件（233）能够抵接于阀座（17），引导部（23）至少部分压持在第三密封件（233）上。这种截止阀通过引导部直接压持在第三密封件上，实现阀芯硬质密封，避免出现第三密封件容易脱落的问题。

Description

截止阀及其制冷系统
相关申请
本申请要求2021年12月18日申请的，申请号为202123218681.3，发明名称为“截止阀及其制冷系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及制冷技术领域，特别是涉及截止阀及其制冷系统。
背景技术
在制冷系统中，截止阀用于对其所在的管路中的介质起切断和节流的重要作用，截止阀的启闭件是阀芯，其主要应用于低温环境下对介质的截断。
现有的截止阀中，阀芯与阀座往往通过相互挤压实现一线硬密封。为了实现上述一线硬密封，需要采用软质材料制备阀芯和阀座，否则容易出现密封不佳泄漏问题，因而现有截止阀的应用受限。
发明内容
本申请提供一种截止阀，技术方案如下。
一种截止阀，包括：中空的阀体，所述阀体内设有阀座，所述阀座上开设有阀口；阀芯，所述阀芯的至少一部分设置在所述阀体内部，并能够沿着所述阀体的轴向移动，以将封堵所述阀口或解除封堵；所述阀芯包括相互连接的连接部和引导部，所述引导部设于所述连接部靠近所述阀口的一端并能够伸入所述阀口内，所述连接部靠近所述引导部的一端设有第三密封件，所 述第三密封件能够抵接于所述阀座，所述引导部至少部分压持在所述第三密封件上。
如此设置，引导部将第三密封件限位在连接部内，避免了第三密封件容易脱落的问题出现。
在其中一个实施方式中，所述引导部压持在所述第三密封件上的面积占所述第三密封件朝向所述阀口的侧面的面积的15％-50％。
如此设置，能够保证引导部对第三密封件的限位作用，防止第三密封件脱落；并且在节省引导部材料的同时，给第三密封件预留足够空间，使其能与阀座抵接。
在其中一个实施方式中，所述引导部压持在所述第三密封件上的面积占所述第三密封件朝向所述阀口的侧面的面积的30％-40％。
在其中一个实施方式中，所述引导部和所述连接部分体设置。
如此设置，可以在第三密封件安装完成后再装配引导部，使其压持在第三密封件上；并且分体设置可以将连接部和引导部分别切削加工，减少切削量，提高加工效率。
在其中一个实施方式中，所述连接部朝向所述引导部的一侧设有第二凹槽，所述引导部包括第一段和凸台，所述第一段设于所述凸台朝向所述连接部的一端，并且嵌入所述第二凹槽内，与所述第二凹槽的内壁连接，所述凸台与所述第一段远离所述连接部的一侧连接，并能够伸入所述阀口内。
在其中一个实施方式中，所述引导部朝向所述连接部的一侧设有第二凹槽，所述连接部的一端嵌入所述第二凹槽内并与所述第二凹槽的内壁连接。
在其中一个实施方式中，所述连接部朝向所述引导部的一侧设有第二凹槽，所述引导部与所述第二凹槽的内壁插销连接或螺纹连接。
在其中一个实施方式中，所述引导部朝向所述连接部的一侧开设有第二凹槽，所述连接部与所述第二凹槽的内壁插销连接或螺纹连接。
如此设置，插销链接或螺纹连接可以保证引导部与第二凹槽的连接强度，并且可以拆卸，从而方便第三密封件的拆卸与安装。
在其中一个实施方式中，在所述第三密封件抵接于所述阀座朝向所述连接部的端面时，所述引导部伸入所述阀口的深度至少为1mm。
如此设置，保证了引导部与阀口的配合强度以及密封性能，不会由于插入过浅而造成阀芯对于阀口的封堵不严。
在其中一个实施方式中，所述阀口的内径与所述引导部的外径对应设置，并且所述引导部的外侧壁与所述阀口的内壁抵接。
如此设置，引导部可以引导阀芯插入阀口，避免偏置；引导部与阀口内壁抵接可以增强密封性。
在其中一个实施方式中，所述第三密封件的材质设置为紫铜或塑料。
如此设置，紫铜和塑料可以在保证强度的同时具备一定柔软性，从而增强密封性能。
本申请还提供一种制冷系统，包括上述的截止阀。
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。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式 中的任何一者的范围的限制。
图1为本申请提供的截止阀的一个实施例的剖视图。
图2为本申请提供的截止阀的一个实施例的剖视图。
图3为本申请提供的截止阀的一个实施例的阀芯的主视图。
图4为本申请提供的截止阀的一个实施例的阀芯的剖视图。
图5为本申请提供的截止阀立体图。
图6为本申请提供的截止阀主视图。
图7为本申请提供的截止阀俯视图。
图8为本申请提供的截止左视图。
图中各符号表示含义如下：
100、截止阀；10、阀体；11、第一开口；111、环形凸起；12、第二开口；13、第一连通管；14、第二连通管；15、端盖；151、第二螺纹段；16、主体；17、阀座；171、阀口；20、阀芯；21、操作部；211、第一螺纹段；22、连接部；221、第一凹槽；222、第二凹槽；23、引导部；231、第一段；232、凸台；233、第三密封件；25、第一密封件；26、第二密封件；30、气门组件；31、罩壳；32、第四密封件；33、连接体；34、弹性件；35、气门芯。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为“装设于”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“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本申请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。本申请中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例的目的，不是旨在于限制本申请。本申请所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
请参见图1-图2，此种截止阀100安装于制冷系统中，用于实现管道的连通和截断。
截止阀100包括阀体10和阀芯20，阀体10与阀芯20连接。阀体10的内部中空，用于容纳阀芯20等部件；阀芯20的至少一部分设于阀体10内部，并能够沿着阀体10轴向移动。
阀体10上还设置有第一开口11和第二开口12。在本实施例中，当截止阀100如说明书附图中，竖直安装时(当涉及到上、下、左和右等方位词，均默认截止阀100为竖直安装的状态，下文不再赘述)，第一开口11和第二开口12开设于阀体10的下侧和右侧。第一开口11远离阀体10的一侧连接有第一连通管13，第一开口11通过第一连通管13与外界连通；第二开口12远离阀体10的一侧连接有第二连通管14，第二开口12通过第二连通管14与外界连通。第一连通管13和第二连通管14分别作为介质的进口或出口。当第一连通管13作为介质的进口时，介质从第一连通管13进入截止阀100，通过第一开口11进入阀体10内部，若截止阀100呈开启状态，则介质通过第 二开口12，经由第二连通管14流出截止阀100；反之亦然，介质也可以从第二连通管14经由第二开口12进入阀体10，再通过第一开口11和第一连通管13流出截止阀100。
可选地，第一开口11和第二开口12的位置不限于本实施例中的开设于阀体10的下侧和右侧。在其它实施例中，第一开口11和第二开口12也可以设置在阀体10的左右两侧、上下两侧等，只要可以通过阀芯20的轴向运动可以实现两个阀口之间的连通或截断即可。
阀体10还包括主体16、端盖15和阀座17，在本申请的一个实施例中，主体16位于阀体10远离第一开口11的一侧，与第一开口11相对设置，并且与第一开口11同轴。主体16用于限位阀芯20，使阀芯20沿着主体16作轴向运动，以此实现截止阀100打开状态和关闭状态之间的转变。端盖15位于主体16的最顶端，与阀芯20配合密封住阀体10，以此防止外界灰尘和粉末等杂质进入阀体10内部，影响截止阀100开关阀的密封性和进入阀体10的介质的纯度，以及防止影响截止阀100其他相关功能的实现。阀座17设于主体16内，用于与阀芯20抵接配合，以实现阀体10内部的连通或隔断。在本实施例中，阀座17设于第一开口11处，在其他实施例中，阀座17还可设于第一开口11和第二开口12之间。
可选地，端盖15也可以设置于主体16的内部，即，端盖15的外周侧抵接于主体16的内周侧，端盖15的内周侧与阀芯20的外周侧抵接，如此设置，端盖15与阀芯20配合也同样可以起到密封住阀体10的作用。端盖15的位置不限于本实施例中所述的方案，只需能够实现上述功能即可。
阀座17上开设有阀口171，阀口171与第一开口11连通，共同形成介质流入或者流出的通道。在一些实施例中，在本实施例中，阀座17与阀体10 分体设置，以降低加工的难度。可选地，在其他实施例中，阀座17也可以由阀体10直接形成。
请参见图3-图4，阀芯20包括操作部21、连接部22和引导部23。操作部21一端连接有连接部22，另一端伸出端盖15；连接部22位于操作部21和引导部23之间，连接操作部21和引导部23；引导部23与连接部22远离操作部21的一端连接，随操作部21和连接部22作轴向运动。连接部22和引导部23分体设置，分别加工，以减少加工时间和切削量，降低成本。
操作部21伸出端盖15的上端面，易于加工和拆卸。操作部21设置为上端开口的空心结构，多个平面间隔均匀分布在操作部21的内表面，以此可以适应内六角扳手等工具。在其他实施方式中，操作部21内表面的平面也可以设置为不间隔均匀分布，以适用于不规则形状的扳手。
连接部22位于操作部21和引导部23之间，由操作部21带动，与操作部21同步转动。操作部21的外周侧具有第一螺纹段211，阀体10的内表面设置有与第一螺纹段211相配合的第二螺纹段151。在工作过程中，操作部21由外部机器或工具操作转动，从而带动第一螺纹段211周向转动，第一螺纹段211与第二螺纹段151配合，使操作部21进行轴向的升降运动，操作部21带动与其连接的连接部22，连接部22再带动与其连接的引导部23，最终实现阀芯20的轴向运动。
在一些实施例中，第二螺纹段151还可以设置在端盖15的内表面，端盖15内周侧的第二螺纹段151与操作部21外周侧的第一螺纹段211配合使连接部22轴向运动。
连接部22连接于操作部21朝向阀口171的一端，连接部22的外侧壁抵接于主体16的内壁，使阀芯20可以沿主体16内壁轴向运动。连接部22的 直径大于操作部21的直径，使得连接部22与操作部21之间形成台阶，台阶上设有第一密封件25，第一密封件25能够抵接于端盖15靠近所述连接部22的一侧。当阀芯20朝端盖15方向运动到极限位置，即上述第一密封件25抵接住端盖15，第一密封件25能够起到缓冲作用，并且增强两者间的密封性。
连接部22靠近操作部21的一端还设有第二密封件26，第二密封件26周向环绕于连接部22的外周侧，第二密封件26的外周侧周向抵接于主体16的内壁，以此密封阀体10，使介质在第一开口11和第二开口12的流通过程中不会泄漏。在其他实施例中，第二密封件26还可替换为密封垫等同样可以起到密封作用的部件。
连接部22靠近阀口171的一端设有第一凹槽221和第二凹槽222。第二凹槽222位于连接部22靠近阀口171的一端，用于连接引导部23；第一凹槽221位于第二凹槽222朝向阀口171的槽口所在的端面上，环绕第一凹槽221，供第三密封件233嵌入。
在一些实施例中，第二凹槽222呈圆柱形凹槽，第二凹槽222与连接部22和引导部23同轴。可选地，在其他实施方式中，第二凹槽222还可以设置成其他形状，如立方体形状，只需要能够与引导部23配合连接即可。
在一些实施例中，第一凹槽221为圆环状凹槽，环绕于第二凹槽222设置。第一凹槽221的形状和深度应根据第三密封件233的形状和尺寸调整，即，需要保证第三密封件233嵌入第一凹槽221后，在截止阀100关闭状态下，第三密封件233能够抵接于阀座17并能够密封阀口171。
引导部23位于所述连接部22靠近第一开口11的端部，用于引导阀芯20插入阀口171内，以实现阀芯20和阀口171的密封配合。
引导部23包括第一段231和凸台232。第一段231位于引导部23靠近连 接部22的一侧，用于将引导部23与连接部22固定连接。凸台232位于引导部23朝向阀口171的一侧，用于引导阀芯20插入阀口171。
请参见图1，在本申请的一个实施例中，第一段231和凸台232分体设置，如此设置，可以在第三密封件233安装完成后再装配引导部23，使其压持在第三密封件233上；并且分体设置可以将连接部22和引导部23分别切削加工，减少切削量，提高加工效率。
请参见图2，在一个实施例中，第一段231和凸台232一体设置，从而增加了阀芯20结构的稳固性。
具体地，第一段231嵌入第二凹槽222内部，与第二凹槽222的内壁插销连接或者螺纹连接。第一段231与第二凹槽222的连接方式不限于本实施例所述的连接方式，只需能够实现引导部23与连接部22的固定连接即可。
可选地，在其他实施例中，引导部23上还可开设有第二凹槽222，连接部22的一端插入第二凹槽222内并与第二凹槽222的内壁连接，此种实施例的连接方式与上述连接方式相同，在此不做赘述。
凸台232压持在第三密封件233上，使得第三密封件233嵌入第一凹槽221后，除了受到第一凹槽221的周向限位外，其朝向阀口171的一侧还会被凸台232抵接限位，即，第三密封件233的四个方向均被有效限位，不易从第一凹槽221中脱落，以此实现阀芯20的硬质密封。
具体地，凸台232压持在所述第三密封件233上的面积占第三密封件233朝向阀口171的侧面的面积的15％-50％，既能够加强压持的强度，又能够使得第三密封件233与阀座17抵接。
在一些实施例中，凸台232压持在所述第三密封件233上的面积占所述第三密封件233朝向阀口171的一侧的表面的面积的30％-40％。
具体地，凸台232的外径与阀口171的内径对应设置，当截止阀100处于关闭状态，凸台232能够伸入阀口171，从而对阀芯20的轴向运动起到导向的作用，并且凸台232被阀口171周向限位，增加了截止阀100闭阀状态的稳定性。
进一步地，凸台232的侧壁与所述凸台232朝向所述阀口171的底壁之间通过圆角连接，如此设置，可以避免应力集中，增加强度，当引导部23插入阀口171内时，圆角结构的引导效果更好。
在一些实施例中，凸台232设置为伸入阀口171后，凸台232的外周侧周向抵接于阀口171的内壁，从而加强对凸台232的限位作用。
在一些实施例中，当第三密封件233抵接于阀口171朝向连接部22的端面时，凸台232插入阀口171的深度至少为1mm，例如2mm、3mm、4mm等。如此设置，使得引导部23插入阀口171的深度处于合适区间，不会因为插入深度过浅而造成隔断介质的性能不足。
在阀座17朝向所述阀芯20的端面设有与第三密封件233对应的环形凸起111，当截止阀100关阀时，第三密封件233会与上述环形凸起111配合密封阀口171。
在一些实施例中，环形凸起111朝向第三密封件233一侧的形状为光滑圆弧，以此避免损坏第三密封件233，并且保证了环形凸起111和第三密封件233之间的密封性能。
可选地，在其他实施方式中，环形凸起111朝向第三密封件233的一侧的形状还可以设置为矩形、三角形等同样可以保证密封性能的形状。
当截止阀100关阀，阀芯20朝阀口171移动，最终第三密封件233抵接于环形凸起111，用于隔绝第一开口11及第一连通管13与阀体10内部。在 一些实施例中，第三密封件233采用紫铜材质，以保证第三密封件233与阀口171之间的密封性能。在其他实施方案中，第三密封件233也可以采用硬塑料等同样可保证密封性能的材质制作。
此外，截止阀100还包括气门组件30，气门组件30连接于主体16。在本实施例中，气门组件30与第二开口12相对设置，作为充气入口或放气出口，用于给整个制冷系统补充介质或释放介质。在其他实施例中，气门组件30的轴线还可与第二开口12的轴线垂直设置，气门组件30还可设于主体16的其他位置。
气门组件30包括连接体33，连接体33连接于主体16，连接体33作为介质通入阀体10的通道。
气门组件30还包括气门芯35、罩壳31和第四密封件32。气门芯35设于连接体33内，能够使得主体16的内部与连接体33的内部连通或隔断，罩壳31套设在连接体33的外周侧，用于保护气门芯35，防止外界杂质进入；第四密封件32位于罩壳31和连接体33之间，与罩壳31配合密封住连接体33。
具体地，气门芯35的一端设有弹性件34，当气门芯35未受到外界压力时，会保持关闭状态，此时，连接体33保持密封，阻隔阀体10内部与外界。当气门芯35受到压力时，气门芯35挤压弹性件34，并朝向靠近主体16的方向运动，从而解除封堵，使得主体16内部与连接体33的内部连通，从而使介质可以通入阀体10内部或流出阀体10内部。弹性件34用于气门芯35的复位。
本申请还提供一种制冷系统，包括上述的截止阀100，截止阀100安装于制冷系统的介质通路中，以控制通路的截断和流通，并且用于向制冷系统补 充介质。
请参加图1及图5-图8，在本实施例的截止阀100的工作过程中，当截止阀100需要关阀时，拧动截止阀100顶部的操作部21，操作部21与连接部22同步旋转，通过第一螺纹段211和第二螺纹段151的配合，使连接部22带动阀芯20相对端盖15作轴向运动，从而使阀芯20底端的引导部23插入阀口171，第三密封件233与阀座17抵接，密封住第一连通管13，以此实现第一连通管13和第二连通管14之间的截断。
相较于相关技术，本申请的阀芯20上的引导部23压持在第三密封件233上，实现了阀芯20的硬质密封，避免了第三密封件233脱落。
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实用新型专利范围的限制。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，本申请专利的保护范围应以所附权利要求为准。

Claims (12)

  1. 一种截止阀，其特征在于，包括：
    中空的阀体，所述阀体内设有阀座，所述阀座上开设有阀口；
    阀芯，所述阀芯的至少一部分设置在所述阀体内部，并能够沿着所述阀体的轴向移动，以封堵或打开所述阀口；
    所述阀芯包括相互连接的连接部和引导部，所述引导部设于所述连接部靠近所述阀口的一端并能够伸入所述阀口内，所述连接部靠近所述引导部的一端设有第三密封件，所述第三密封件能够抵接于所述阀座，所述引导部至少部分压持在所述第三密封件上。
  2. 根据权利要求1所述的截止阀，其中，所述引导部压持在所述第三密封件上的面积占所述第三密封件朝向所述阀口的侧面的面积的15％-50％。
  3. 根据权利要求2所述的截止阀，其中，所述引导部压持在所述第三密封件上的面积占所述第三密封件朝向所述阀口的侧面的面积的30％-40％。
  4. 根据权利要求1所述的截止阀，其中，所述引导部和所述连接部分体设置。
  5. 根据权利要求4所述的截止阀，其中，所述连接部朝向所述引导部的一侧设有第二凹槽，所述引导部包括第一段和凸台，所述第一段设于所述凸台朝向所述连接部的一端，并且嵌入所述第二凹槽内，与所述第二凹槽的内壁连接，所述凸台与所述第一段远离所述连接部的一侧连接，并能够伸入所述阀口内。
  6. 根据权利要求4所述的截止阀，其中，所述引导部朝向所述连接部的一侧设有第二凹槽，所述连接部的一端嵌入所述第二凹槽内并与所述第二凹槽的内壁连接。
  7. 根据权利要求5所述的截止阀，其中，所述连接部朝向所述引导部的一侧设有第二凹槽，所述引导部与所述第二凹槽的内壁插销连接或螺纹连接。
  8. 根据权利要求6所述的截止阀，其中，所述引导部朝向所述连接部的一侧开设有第二凹槽，所述连接部与所述第二凹槽的内壁插销连接或螺纹连接。
  9. 根据权利要求1所述的截止阀，其中，在所述第三密封件抵接于所述阀座朝向所述连接部的端面时，所述引导部伸入所述阀口的深度至少为1mm。
  10. 根据权利要求1所述的截止阀，其中，所述阀口的内径与所述引导部的外径对应设置，并且所述引导部的外侧壁与所述阀口的内壁抵接。
  11. 根据权利要求1所述的截止阀，其中，所述第三密封件的材质设置为紫铜或塑料。
  12. 根据权利要求1所述的截止阀，其中，所述连接部朝向所述引导部的一侧设有第一凹槽，所述第三密封件设置在所述第一凹槽内。
PCT/CN2022/135061 2021-12-18 2022-11-29 截止阀及其制冷系统 WO2023109504A1 (zh)

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CN216742876U (zh) * 2021-12-18 2022-06-14 浙江盾安人工环境股份有限公司 截止阀及其制冷系统
WO2024001898A1 (zh) * 2022-06-30 2024-01-04 浙江盾安人工环境股份有限公司 截止阀

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US3331583A (en) * 1966-06-23 1967-07-18 Elizabeth N Willis Balanced shut-off valve
US20060005890A1 (en) * 2004-07-09 2006-01-12 Danfoss A/S Flow control valve for refrigeration system
CN104791502A (zh) * 2014-01-20 2015-07-22 浙江三花股份有限公司 一种电动阀
CN106195352A (zh) * 2015-05-28 2016-12-07 纳博特斯克有限公司 阀装置
CN106439072A (zh) * 2015-08-11 2017-02-22 浙江三花制冷集团有限公司 一种电子膨胀阀
CN216742876U (zh) * 2021-12-18 2022-06-14 浙江盾安人工环境股份有限公司 截止阀及其制冷系统

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Publication number Priority date Publication date Assignee Title
US3331583A (en) * 1966-06-23 1967-07-18 Elizabeth N Willis Balanced shut-off valve
US20060005890A1 (en) * 2004-07-09 2006-01-12 Danfoss A/S Flow control valve for refrigeration system
CN104791502A (zh) * 2014-01-20 2015-07-22 浙江三花股份有限公司 一种电动阀
CN106195352A (zh) * 2015-05-28 2016-12-07 纳博特斯克有限公司 阀装置
CN106439072A (zh) * 2015-08-11 2017-02-22 浙江三花制冷集团有限公司 一种电子膨胀阀
CN216742876U (zh) * 2021-12-18 2022-06-14 浙江盾安人工环境股份有限公司 截止阀及其制冷系统

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