WO2016119553A1 - Vanne d'arrêt - Google Patents

Vanne d'arrêt Download PDF

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Publication number
WO2016119553A1
WO2016119553A1 PCT/CN2015/099340 CN2015099340W WO2016119553A1 WO 2016119553 A1 WO2016119553 A1 WO 2016119553A1 CN 2015099340 W CN2015099340 W CN 2015099340W WO 2016119553 A1 WO2016119553 A1 WO 2016119553A1
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WO
WIPO (PCT)
Prior art keywords
valve
filling
passage
charging
shut
Prior art date
Application number
PCT/CN2015/099340
Other languages
English (en)
Chinese (zh)
Inventor
俞城永
彭勇
金荣昌
俞鉴伟
Original Assignee
浙江三花股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江三花股份有限公司 filed Critical 浙江三花股份有限公司
Priority to KR1020177023599A priority Critical patent/KR20170110098A/ko
Publication of WO2016119553A1 publication Critical patent/WO2016119553A1/fr

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Classifications

    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • 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
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • 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
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • 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
    • F16K27/0209—Check valves or pivoted valves
    • 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 invention relates to the technical field of control components of a refrigeration system, and in particular to a shut-off valve for controlling the flow passage of a refrigerant.
  • the basic components of a refrigeration system are compressors, condensers, throttling devices, and evaporators, as well as other auxiliary components such as shut-off valves.
  • the shut-off valve is used as the connecting valve between the indoor unit and the outdoor unit of the refrigeration system.
  • the outdoor unit When the equipment is installed at the factory, the outdoor unit can be evacuated according to requirements, and the refrigerant is filled, and the refrigerant is stored by closing the shut-off valve; for example, repairing the air conditioner
  • the refrigeration system is also connected to the maintenance equipment through a shut-off valve, thereby completing the operation of evacuating and filling the refrigerant.
  • the current shut-off valve uses a common shut-off valve filling nozzle because of its connection interface and filling nozzle, because the valve core protrudes from the valve body, causing the valve body to forge a decrease in the product rate.
  • a shut-off valve structure used in the refrigeration system shown in Fig. 1 is disclosed in the document of Chinese Patent ZL201310129195.5. In this configuration, the filling nozzle is placed on the valve stem to solve the drawbacks of poor sealing performance existing in the prior art, and to reduce the material cost and provide the manufacturing yield.
  • this structure does not replace the "valve core” component with complicated structure, and the “valve core” has a complicated structure, and the sealing portion in the cold/hot environment is easily loosened, thereby affecting the sealing performance.
  • the valve core of the "valve core” is opened by mechanical means, and at the same time, the “valve core” is fixed by the filling method, and the opening amount of the valve opening is fixed after opening the valve port.
  • the charging curve is shown in Figure 2. It cannot be optimized according to the needs of the system. It is also necessary to use other auxiliary equipment to confirm whether the set value has been filled and to manually close the filling valve port. In particular, the above defects cannot be adapted to the control needs of various large-capacity commercial refrigeration equipment that have been continuously introduced in recent years.
  • the present invention provides a shutoff valve including: a valve body having a flow passage therein; a valve seat, the valve seat being disposed at a lower end portion of the valve body, and a valve disposed thereon a valve stem, the valve stem is disposed in the body and cooperates with the valve port to open or close the flow passage; includes a filling valve core, and the valve stem is further provided with a charging passage and Filling the valve port, the charging spool is disposed in the charging passage and elastically abuts the filling valve port from one side of the circulation passage, the charging spool passes the charging A change in fluid pressure differential between the passage and the flow passage cooperates with the fill valve port to open or close the fill passage.
  • an end of the charging spool facing the filling valve port has a center end surface and a guiding tapered surface extending along the center end surface.
  • the central end surface is specifically a circular plane, and the diameter (D1) of the circular plane is larger than 1/2 of the diameter (D2) of the filling valve port.
  • the central end surface of the filling valve core is specifically a circular arc surface concave toward the axial center.
  • valve stem has a stage in which a diameter becomes large toward an outer peripheral portion of one end of the circulation passage, and the charging spool is disposed in a charging passage opposite to the large stage.
  • valve seat and the valve body are in a separate structure.
  • the valve stem is loaded into the flow passage from a lower end portion of the valve body, and has a seal portion of the flow passage at a transition section of the large stage.
  • the filling spool is made of a non-metallic material.
  • a stopper is disposed at an end of the valve stem facing the circulation passage, and an abutment spring is disposed between the stopper and the charging spool.
  • the stop is in particular a retaining ring that is riveted to the valve stem (11).
  • a stepped hole or a tapered hole filled with a fluid is provided in the filling passage of the valve stem.
  • the shut-off valve provided by the invention opens or closes the filling passage through the fluid pressure difference between the filling passage and the circulation passage, and can set the opening value of the filling valve core without the need for personnel control, thereby reducing the occurrence of errors.
  • the filling process is more reliable, and in the charging phase, as the pressure difference is reduced, the opening of the valve port is reduced, the filling amount per unit time is also reduced, and the charging can be performed smoothly.
  • the present invention can obtain a filling process curve by adjusting the structure of the filling valve core and the valve stem, and can Optimized according to the needs of different refrigeration systems to meet the needs of refrigeration equipment of different specifications, different capacities and different use environments, the structure is simple, the cost is low, and the control is convenient.
  • Figure 1 is a cross-sectional view of a prior art shutoff valve
  • 2 is a graph of charging time per unit time of a prior art shut-off valve during charging
  • Figure 3 is a cross-sectional view showing a specific embodiment of a shutoff valve according to the present invention.
  • Figure 4 is an anatomical view of the valve stem of Figure 3 equipped with a filling spool;
  • Figure 5 is a cross-sectional view of the charging spool of Figure 3;
  • Figure 6a is a filling curve of the shut-off valve according to the present invention during charging
  • Figure 6b is a charging curve of the shut-off valve according to the present invention during the charging process
  • Figure 7 is a cross-sectional view of another embodiment of a filling spool
  • Figure 8 is a cross-sectional view of another embodiment of the valve stem of the present invention.
  • FIG. 3 is a cross-sectional view of a specific embodiment of a shutoff valve according to the present invention
  • FIG. 4 is an exploded view of the valve stem of FIG. 3 equipped with a filling valve core
  • FIG. 5 is a charging spool of FIG. .
  • the shut-off valve for the refrigeration system is generally disposed on the outdoor unit of the refrigeration system, including the valve body 1 formed by forging or casting, and the valve body 1 is a "three-way" structure that penetrates internally to form the flow passage 11 and has Three ports.
  • the lower end interface 12 of the valve body 1 is in communication with the outdoor unit piping, and the horizontal interface 14 is connected to the indoor unit of the refrigeration system through the connecting pipe.
  • the valve stem 3 has a columnar structure in the form of a through cavity inside, and a hexagonal or rectangular inner hole (not shown) may be provided at the upper end of the through cavity.
  • the valve stem 3 is screwed upward from the lower end port 12 of the valve body 1 into the interior of the valve body 1.
  • the outside of the valve seat 2 has a stepped surface 22 through which the valve seat 2 abuts against the valve body 1 for axial positioning and is fixed to the lower end portion of the valve body 1 by welding.
  • the upper end portion of the valve seat 2 forms a valve port 21.
  • the lower end portion 37 of the valve stem 3 has a tapered shape.
  • a hexagonal or rectangular tool can be inserted from the upper end interface 13 of the valve body 1 into the upper end of the valve stem 3 to drive the valve stem 3 to rotate, and move up and down by the threaded web to make the cone shape of the valve stem 3
  • the lower end portion 37 is in contact with or separated from the valve port 21 of the valve seat 2, thereby opening or closing the flow passage 11.
  • the through cavity in the valve stem 3 is specifically used as the charging passage 31, and a stepped hole is provided in the charging passage 31 as the filling valve port 32.
  • the charging passage 31 communicates with the flow passage 11 through the filling valve port 32.
  • the charging spool 4 is loaded into the charging passage 31 from one side of the circulation passage 11 (i.e., from the side opposite to the upper end port 13 of the valve body 1). As a retaining ring of the stopper 5, the crimping is fixed to the lower end portion 37 of the valve stem 3 facing the flow passage 11.
  • An abutment spring 6 is disposed between the charging spool 4 and the stopper 5 such that the charging spool 4 elastically abuts against the filling valve port 32.
  • the pressure parameters of the abutment spring 6 can be set according to system requirements.
  • the charging spool 4 When the normal state, the charging spool 4 abuts the filling valve port 32 to close the charging passage 31; when the upper end interface 13 of the valve body 1 of the shutoff valve is connected to the filling device, the charging spool 4 faces the filling valve
  • the end of the port 32 is subjected to a pressure F1 which is applied downward by the filling liquid in the filling device and tends to open the filling passage 31; at the same time, the filling valve core 4 is also subjected to the pressure F2 of the abutting spring and the inside of the flow passage 11 respectively.
  • the fluid pressures F3, F2 and F3 are opposite to the direction of F1.
  • the upper end portion of the charging spool 4 is provided as a central end surface 41 of the center portion, and a guiding tapered surface 42 extending toward the edge along the center end surface 41.
  • the center end surface 41 may be provided in a circular plane.
  • the circular plane receives the fluid pressure F1 in the filling device from the vertical direction, which can reduce the fluctuation caused by the instability of the external fluid pressure and reduce the control error.
  • the guiding cone surface 42 is subjected to a certain fluid pressure, so that the filling valve core 4 has a centripetal balance component, which makes the valve core opening process more stable.
  • Figure 7 is a cross-sectional view of another embodiment of a fill spool.
  • the central end surface 41' of the filling valve body 4' is specifically a concave arc surface, which can also achieve the effects of the foregoing scheme, and will not be described herein.
  • the valve stem 3 has a stage 33 having a larger diameter at one end toward the flow passage 11, and the filling spool is disposed in the opposite filling passage 31 of the large stage 33.
  • the transition portion in which the diameter of the large stage 33 becomes large is provided as a tapered step surface, and has a seal portion 34 on the tapered step surface.
  • the upper stop positioning and the circulation passage 11 realize a hard seal (which belongs to the second seal, and the seal ring 7 on the outer peripheral surface of the valve stem 3 performs the first soft seal), and the structure can effectively utilize the thickness of the valve stem material and is compact in design. To make the product miniaturized.
  • valve seat 2 and the valve body 1 may have a unitary structure.
  • a preferred design is that the valve seat 2 and the valve body 1 adopt a separate structure.
  • the valve stem 3 is first loaded into the flow passage 11 from the lower end portion of the valve body 1, and the valve seat 2 is welded to the lower end of the valve body 1.
  • a stepped hole 35 is provided as a fluid near the filling valve port 32. guide.
  • FIG. 8 A cross-sectional view of another embodiment of a valve stem is given in FIG. As shown in Figure 8. Different from the foregoing, in the present embodiment, in the filling passage 31 of the valve stem 11 near the filling valve port 32, a tapered hole 36 having a more effective flow guiding effect is provided, and the fluid pressure is more stable.
  • the opening/closing of the filling passage 31 is related to the relationship between F1, F2 and F3. In addition, it is related to the weight of the filling valve body 4 itself. Since the angle of the shut-off valve installation in the system equipment may be various, the influence factor of the weight of the filling valve core 4 is uncertain. In order to reduce the factors, the filling valve core is preferably made of a lighter material, such as a non-metallic engineering plastic material, to reduce the influence on the set parameters.
  • the technical idea of the present invention has been described above in connection with specific facts.
  • the invention is advantageous in that the standardized "valve core" is eliminated, depending on the different characteristics of the system and the working environment and mode of the equipment.
  • the pressure point for starting and closing the refrigerant charge is preset and the charging process is controlled. For example, the amount of charge per unit time, the filling time, etc., are especially suitable for the control needs of large-capacity commercial refrigeration equipment. The following can be further explained.
  • Fig. 6a and Fig. 6b are two charging curves of the shutoff valve given in the charging process of the present invention.
  • the different devices in which the shut-off valve according to the present invention is installed include the device 1, the device 2, and the device 3.
  • the parameters of the filling valve ports of the respective shut-off valves are the same, and the pressures of the refrigerant systems before filling each device are different.
  • the valve opening is different, but the curves are basically parallel.
  • the different devices in which the shut-off valve according to the present invention is installed include the device 1', the device 2' and the device 3'.
  • the parameters of the filling valve ports of the respective shut-off valves are different, and the pressures of the refrigerant systems before filling each device are different.
  • the valve plug is opened, the degree of opening of the valve port is different, but the curve change mode can be flexibly designed to complete the charging in substantially the same time.
  • the above parameters can be designed by changing the size of the filling valve port and the end face area of the valve plug.
  • the pressure of the spring is realized, and will not be described here.
  • shut-off valve assembly provided by the present invention has been described in detail above. This article applies specific The principles and embodiments of the present invention have been described by way of example, and the description of the above embodiments is merely for assisting in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

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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)
  • Multiple-Way Valves (AREA)

Abstract

Cette vanne d'arrêt comprend : un corps de vanne (1) pourvu à l'intérieur d'un canal d'écoulement (11) ; une base de vanne (2) disposée au niveau d'une extrémité inférieure du corps de vanne (1), et sur laquelle est agencé un orifice de vanne (21) ; et une tige de vanne (3) disposée dans le corps de vanne (1) et destinée à s'accoupler avec l'orifice de vanne (21) afin d'ouvrir ou fermer le canal d'écoulement (11) ; et elle comprend en outre un obus de remplissage de vanne (4). La tige de vanne (3) est en outre pourvue d'un canal de remplissage (31) et d'un orifice de remplissage de vanne (32) sur celui-ci. L'obus de remplissage (4) est agencé dans le canal de remplissage (31) et vient buter de manière élastique contre l'orifice de remplissage (32) à partir d'un côté du canal d'écoulement (11), et l'obus de remplissage (4) s'accouple avec l'orifice de remplissage (32) afin d'ouvrir ou fermer le canal de remplissage (31) au moyen d'un changement dans la différence de pression fluidique entre le canal de remplissage (31) et le canal d'écoulement (11). Cette vanne d'arrêt satisfait les exigences de différents systèmes de réfrigération, elle est de structure simple et de coût réduit, et facilite la commande de ces systèmes.
PCT/CN2015/099340 2015-01-30 2015-12-29 Vanne d'arrêt WO2016119553A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020177023599A KR20170110098A (ko) 2015-01-30 2015-12-29 차단 밸브

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510046783.1 2015-01-30
CN201510046783.1A CN105987206A (zh) 2015-01-30 2015-01-30 一种截止阀

Publications (1)

Publication Number Publication Date
WO2016119553A1 true WO2016119553A1 (fr) 2016-08-04

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PCT/CN2015/099340 WO2016119553A1 (fr) 2015-01-30 2015-12-29 Vanne d'arrêt

Country Status (3)

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KR (1) KR20170110098A (fr)
CN (1) CN105987206A (fr)
WO (1) WO2016119553A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109695721A (zh) * 2017-10-23 2019-04-30 浙江三花智能控制股份有限公司 节流截止阀及具有其的空调系统

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CN109505991B (zh) * 2019-01-11 2021-01-01 北京机械设备研究所 一种可主动控制的制冷剂通用充注阀转接头
CN110398096B (zh) * 2019-08-05 2020-12-22 南通市江海钢绳有限公司 一种空调冷媒充注机的可调节冲注头
CN111268630A (zh) * 2020-03-02 2020-06-12 中国重汽集团济南动力有限公司 一种重型汽车驾驶室举升系统油液加注装置及其工艺
CN216742867U (zh) * 2021-11-22 2022-06-14 浙江盾安人工环境股份有限公司 一种截止阀
CN218761436U (zh) * 2022-08-26 2023-03-28 浙江盾安禾田金属有限公司 一种可主动控制的充注阀

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US3948285A (en) * 1975-01-29 1976-04-06 Rain Bird Sprinkler Mfg. Corporation Pressure and flow regulation device
US5095939A (en) * 1991-06-13 1992-03-17 Allied-Signal Inc. Redundant pressurizing valve
CN201568591U (zh) * 2009-12-30 2010-09-01 固安沃克流体控制有限公司 一种双阀芯的复合截止阀
CN102537452A (zh) * 2011-12-27 2012-07-04 上海空间推进研究所 一种高压缓冲阀
CN103383016A (zh) * 2012-05-03 2013-11-06 李耀强 带母子阀的恒流器
DE102013210087A1 (de) * 2013-05-29 2014-12-04 Schaeffler Technologies Gmbh & Co. Kg Blechüberdruckventil für einen hydraulischen Spanner

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CN101504086B (zh) * 2009-02-27 2011-01-19 广东美芝制冷设备有限公司 限制性单向阀及其控制方法和应用
CN203641522U (zh) * 2014-01-10 2014-06-11 浙江万盾制冷配件有限公司 截止阀

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Publication number Priority date Publication date Assignee Title
US3948285A (en) * 1975-01-29 1976-04-06 Rain Bird Sprinkler Mfg. Corporation Pressure and flow regulation device
US5095939A (en) * 1991-06-13 1992-03-17 Allied-Signal Inc. Redundant pressurizing valve
CN201568591U (zh) * 2009-12-30 2010-09-01 固安沃克流体控制有限公司 一种双阀芯的复合截止阀
CN102537452A (zh) * 2011-12-27 2012-07-04 上海空间推进研究所 一种高压缓冲阀
CN103383016A (zh) * 2012-05-03 2013-11-06 李耀强 带母子阀的恒流器
DE102013210087A1 (de) * 2013-05-29 2014-12-04 Schaeffler Technologies Gmbh & Co. Kg Blechüberdruckventil für einen hydraulischen Spanner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109695721A (zh) * 2017-10-23 2019-04-30 浙江三花智能控制股份有限公司 节流截止阀及具有其的空调系统

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CN105987206A (zh) 2016-10-05
KR20170110098A (ko) 2017-10-10

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