WO2022011712A1 - 一种长寿命的柱塞泵液力端 - Google Patents

一种长寿命的柱塞泵液力端 Download PDF

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Publication number
WO2022011712A1
WO2022011712A1 PCT/CN2020/102809 CN2020102809W WO2022011712A1 WO 2022011712 A1 WO2022011712 A1 WO 2022011712A1 CN 2020102809 W CN2020102809 W CN 2020102809W WO 2022011712 A1 WO2022011712 A1 WO 2022011712A1
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WIPO (PCT)
Prior art keywords
suction
packing
gland
plunger pump
discharge
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PCT/CN2020/102809
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English (en)
French (fr)
Inventor
李晓斌
姜琛
王继鑫
郭子蒙
李朋
李海龙
Original Assignee
烟台杰瑞石油装备技术有限公司
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Application filed by 烟台杰瑞石油装备技术有限公司 filed Critical 烟台杰瑞石油装备技术有限公司
Priority to PCT/CN2020/102809 priority Critical patent/WO2022011712A1/zh
Publication of WO2022011712A1 publication Critical patent/WO2022011712A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid

Definitions

  • the invention relates to the technical field of plunger pumps, in particular to a hydraulic end of a long-life plunger pump.
  • Hydraulic fracturing construction is a major boost to the stimulation of oil and gas fields.
  • the fracturing equipment that provides the main power is the core component, and the hydraulic end of the fracturing equipment is the key to the construction.
  • the fracturing fluid or sand-carrying fluid passes through The low-pressure port of the hydraulic end enters, and the medium in the cavity of the hydraulic end is pressurized during the reciprocating motion of the plunger, and enters the bottom of the well through the high-pressure pipeline.
  • the purpose of the present invention overcomes the deficiencies of the prior art, and provides a long-life plunger pump hydraulic end, which separates the valve box from the plunger through the packing assembly, and improves the service life of the valve box;
  • the end face of the suction gland is changed from the plane of the prior art to an arc surface, which improves the service life of the suction gland;
  • D-type seal and L-type seal are used to replace the O-type seal, which reduces the reversibility of the sealing ring and improves the sealing performance at the same time.
  • the end faces of the suction pressure cap and the discharge pressure cap are added with arc-shaped grooves from the complete plane of the prior art, so as to improve the service life of the suction pressure cap and the discharge pressure cap.
  • a long-life plunger pump hydraulic end the plunger pump hydraulic end includes a valve box, a plunger and a packing assembly, and the valve box acts as a liquid
  • the conveying container the plunger is connected to the valve box through the packing assembly
  • the packing assembly includes a packing assembly, a packing sleeve, a packing pressure cap, and a packing pressure cap, and the packing sleeve and
  • the valve box is sealed and connected, and the packing assembly for sealing is filled between the packing sleeve and the plunger.
  • the packing sleeve is used to fix the packing sleeve
  • the packing pressure cap is used to fix the packing assembly.
  • the hydraulic end of the plunger pump also includes a suction pressure cap, a discharge pressure cap, a suction gland, a discharge gland, a suction gland seal, a discharge gland seal, a valve assembly and a spring bracket, which are located in the valve box.
  • the liquid suction port and the liquid discharge port are respectively set to control the liquid suction and discharge valve assembly, the suction gland is sealed with the valve box suction port through the suction gland seal, the suction gland is used to fix the suction gland,
  • the discharge gland is connected with the valve assembly of the valve box liquid discharge port.
  • the discharge gland is sealed with the valve box liquid discharge port through the discharge gland seal.
  • the discharge gland is used to fix the discharge gland and is located at the valve box liquid suction port.
  • the valve assembly is connected with the suction gland through the spring bracket.
  • one of the end surfaces of the suction pressure cover is an arc surface, and a protruding block is extended on the arc surface, and the protruding block is used for the connection of the spring bracket.
  • the sealing of the suction gland adopts the combination of a D-shaped sealing ring and an L-shaped sealing ring.
  • the D-shaped sealing ring is embedded on the suction gland.
  • the L-shaped sealing ring is embedded on the suction gland.
  • a first right-angled end is provided on the suction pressure cover
  • a second right-angled end is provided on the valve box corresponding to the position of the first right-angled end
  • the first right-angled end is used in cooperation with the second right-angled end
  • the second right angle is used to limit the suction gland
  • an L-shaped sealing ring is filled between the first right angle end and the second right angle end.
  • one end of the L-shaped sealing ring is used for the vertical sealing between the first right-angle end and the second right-angle end, and the other end of the L-shaped sealing ring is used for the first right-angle end and the second right-angle end. Axial seal between.
  • annular groove is formed on the end surface of the suction pressure cap, and the groove is provided on one end close to the suction pressure cap.
  • annular groove is formed on the end surface of the discharge pressure cap, and the groove is provided on an end close to the discharge pressure cap.
  • the cross section of the annular groove is arc-shaped.
  • the discharge gland is sealed with a D-shaped sealing ring, and the discharge gland seal is embedded on the discharge gland.
  • the end of the plunger is an arc surface.
  • a D-shaped sealing ring and a sealing gasket are used for sealing between the packing sleeve and the valve box.
  • the packing sleeve has a "Z" type structure, and a sinking platform is provided on the valve box, the sinking platform is used to limit the packing sleeve, and a sealing gasket is filled between the sinking platform and the packing sleeve.
  • the present invention has the beneficial effects that: the valve box and the plunger are separated by the packing assembly, so as to improve the service life of the valve box;
  • the plane is changed to an arc surface to improve the service life of the suction gland;
  • the D-type seal and L-type seal are used to replace the O-type seal, which reduces the reversibility of the sealing ring, improves the sealing performance and prevents the sealing ring from creeping during the operation. Wear and tear and prolong service life.
  • the end faces of the suction pressure cap and the discharge pressure cap are added with arc-shaped grooves from the complete plane of the prior art, so as to improve the service life of the suction pressure cap and the discharge pressure cap.
  • FIG. 1 is an overall cross-sectional view of the hydraulic end of the plunger pump.
  • Figure 2 is a cross-sectional view of a discharge or suction pressure cap.
  • FIG 3 is a cross-sectional view of a suction gland.
  • Valve box 2. Discharge cap, 3. Discharge gland, 4. D-type sealing ring, 5. Vail spring, 6. Vail body, 7. Vail seat, 8. L-type sealing ring , 9. Suction gland, 10. Spring bracket, 11. Plunger, 12. Suction pressure cap, 13. Gasket, 14. Packing spacer, 15. Packing bag, 16. Packing sleeve, 17. Disc Root pressure ring, 18. Set screw, 19. Packing pressure cap, 20. Packing sleeve pressure cap, 21. The first right angle end, 22. The second right angle end, 23. The raised block, 24. The annular groove , 25. Shen Taiwan.
  • a hydraulic end of a long-life plunger pump includes a valve box 1, a plunger 11 and a packing assembly, and the valve box 1 is used for liquid delivery Container, the plunger 11 is connected to the valve box 1 through a packing assembly, and the packing assembly includes a packing assembly, a packing sleeve 16, a packing pressure cap 19, and a packing sleeve pressure cap 20.
  • the packing sleeve 16 is sealedly connected with the valve box 1 .
  • the packing sleeve 16 and the valve box 1 are sealed by the combination of the D-shaped sealing ring 4 and the sealing gasket 13 .
  • the packing sleeve 16 is sealed in two ways.
  • the first seal adopts D-type sealing ring 4.
  • the sealing groove is opened on the valve box 1 to prevent fracturing sand from entering between the packing sleeve 16 and the valve box 1. In the gap, it is convenient to replace the packing sleeve 16 later.
  • the second seal is a metal gasket 13, which is used to seal the high-pressure fluid in the valve box 1 to prevent leakage of the high-pressure fluid.
  • the packing sleeve 16 is of a "Z" type structure, and a sinking table 25 is provided on the valve box 1 .
  • the sealing gasket 13 can not only save the process of grooving the packing sleeve 16 and the valve box 1, but also facilitate the installation of the sealing gasket 13, and can also increase the sealing area for the packing sleeve 16 and the valve box 1. better seal.
  • a packing assembly for sealing is filled between the packing sleeve 16 and the plunger 11 , the packing sleeve pressing cap 20 is used to press and fix the packing sleeve 16 , and the packing pressing cap 19 uses the thread to press and fix the packing assembly.
  • the anti-loosening set screw 18 is installed on the packing sleeve pressing cap 20.
  • the packing assembly includes a packing spacer 14, a packing bag 15 and a packing pressure ring 17.
  • the packing spacer 14, the packing bag 15 and the packing pressure ring 17 are arranged on the packing sleeve 16 from the inside to the outside in order. set up.
  • the valve box 1 is separated from the plunger 11 by the packing sleeve 16 in the packing assembly.
  • the hydraulic end of the plunger pump also includes a suction cap 12, a discharge cap 2, a suction cap 9, a discharge cap 3, a suction cap 9 seal, a discharge cap 3 seal, a valve assembly and
  • the spring bracket 10 is provided with a valve assembly for controlling the liquid suction and discharge at the liquid suction port and the liquid discharge port of the valve box 1 respectively.
  • the suction gland 9 is sealed and connected to the liquid suction port of the valve box 1 through the suction gland 9.
  • the suction gland 12 is used to fix the suction gland 9, the discharge gland 3 is connected to the valve assembly of the liquid discharge port of the valve box 1, and the discharge gland 3 is sealed with the valve box 1 through the discharge gland 3.
  • the discharge pressure cap 2 is used to fix the discharge pressure cap 3
  • the valve assembly located at the suction port of the valve box 1 is connected to the suction pressure cover 9 through the spring bracket 10, and the spring bracket 10 is used to limit the valve assembly. , to prevent the vibration of the valve assembly in the valve box 1 under the impact of liquid pressure.
  • the spring support 10 is connected to the Vare spring 5 provided in the suction chamber).
  • the valve assembly includes a valve body 6, a valve seat 7, a valve spring 5, etc. One end of the valve body 6 is connected to the valve seat 7, and the other end of the valve body 6 is connected to the valve spring 5.
  • the suction cavity corresponds to the liquid suction port, which corresponds to the discharge cavity
  • the Vall spring 5 in the discharge cavity is connected with the discharge gland 3
  • the plunger 11 reciprocates in the packing cavity
  • the suction gland 9 cavity is provided with a suction gland 9 and a suction cap 12.
  • one of the end surfaces of the suction pressure cover 9 is an arc surface, and a protruding block 23 extends on the arc surface, and the protruding block 23 is used for the connection of the spring bracket 10 .
  • the sealing of the suction gland 9 adopts the combination of the D-shaped sealing ring 4 and the L-shaped sealing ring 8 .
  • the D-shaped sealing ring 4 is embedded on the suction pressure cover 9 .
  • the L-shaped sealing ring 8 is embedded on the suction pressure cover 9 . That is, a sealing groove is opened on the suction gland 9, and the D-shaped sealing ring 4 and the L-shaped sealing ring 8 are respectively filled in their respective sealing grooves.
  • the D-shaped sealing ring 4 can effectively avoid the O-shaped sealing ring in the prior art. It turns over in the sealing groove and wears out.
  • a first right-angled end 21 is formed on the suction pressure cover 9, and a second right-angled end 22 is formed on the valve box 1 corresponding to the position of the first right-angled end 21.
  • the first right-angled end 21 and the second right-angled end 22, the second right angle is used to limit the suction gland 9, and the L-shaped sealing ring 8 is filled between the first right angle end 21 and the second right angle end 22.
  • One end of the L-shaped sealing ring 8 is used for vertical sealing between the first right-angled end 21 and the second right-angled end 22
  • the other end of the L-shaped sealing ring 8 is used for the first right-angled end 21 and the second right-angled end 22 .
  • Axial sealing between right-angled ends 22 Through the cooperation of the first right angle end 21 and the second right angle end 22 and filling the L-shaped sealing ring 8 between the first right angle end 21 and the second right angle end 22, 100% of the tolerance can be filled and the suction gland can be realized 9. Better sealing with the valve box 1, to avoid the L-shaped sealing ring 8 creeping fast in the sealing groove and wearing the valve box 1.
  • An annular groove 24 is formed on the end surface of the suction pressure cap 12 , and the groove is provided on one end close to the suction pressure cap 9 .
  • An annular groove 24 is formed on the end surface of the discharge pressure cap 2 , and the groove is provided at one end of the discharge pressure cap 3 .
  • the cross section of the annular groove 24 is arc-shaped.
  • the arc-shaped concave contact can transmit the force on the suction pressure cap 12 and the discharge pressure cap 2 backwards, so that the threads on the suction pressure cap 12 and the discharge pressure cap 2 are evenly stressed, and the suction pressure cap 12 and the discharge pressure cap 2 are raised. Mission life.
  • the discharge gland 3 is sealed by a D-shaped sealing ring 4 , and the discharge gland 3 is sealed and embedded on the discharge gland 3 .
  • the end of the plunger 11 is an arc surface.
  • the plunger 11 moves toward the suction gland 9 at a high speed in the packing cavity, the fluid between the plunger 11 and the suction gland 9 will be compressed sharply, and the arc surface of the plunger 11 helps the fluid to disperse around in time.
  • the force on the suction pressure cap 9 and the suction pressure cap 12 can be reduced, and on the other hand, the cavitation hazard of the plunger 11 and the valve box 1 can be greatly reduced.

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Abstract

一种长寿命的柱塞泵液力端，其包括阀箱（1），柱塞（11）和盘根总成，阀箱（1）作为液体输送的容器，柱塞（11）通过盘根总成与阀箱（1）连接，盘根总成包括盘根组件，盘根套（16），盘根压帽（19），盘根套压帽（20），盘根套（16）与阀箱（1）密封连接，在盘根套（16）与柱塞（11）之间填充用于密封的盘根组件，盘根套压帽（20）用于固定盘根套（16），盘根压帽（19）用于固定盘根组件。通过分别对柱塞（11），吸入压盖（9），吸入压帽（12），排出压帽（2）的优化设计，提升了阀箱（1），吸入压盖（9），吸入压帽（12）和排出压帽（2）的使命寿命，从而提升柱塞泵液力端的使命寿命。

Description

一种长寿命的柱塞泵液力端 技术领域
本发明涉及柱塞泵技术领域，具体涉及一种长寿命的柱塞泵液力端。
背景技术
水力压裂施工是油气田实现增产的一大助力，作为提供主要动力的压裂设备是核心组成部分，而压裂设备中的液力端是影响施工的关键所在，压裂液或携砂液经液力端低压口进入，在柱塞的往复运动中将液力端腔体内的介质加压，通过高压管线进入井底。随着我国页岩气勘探开发力度不断加大，对压裂设备的要求不断提高，压裂施工过程中压力值不断增加，施工环境恶劣，施工时间加长，作业过程中，液力端阀箱应力集中、磨损严重，压帽、压盖受力大，密封件易损坏，凡尔座易冲蚀等问题均影响液力端使用寿命。目前，常规液力端的使用寿命短，泵配更换周期频繁，严重影响用户的作业进度，所以做一款能够长时间满足作业需求的液力端是非常有必要的。
发明内容
本发明的目的克服现有技术的不足，提供一种长寿命的柱塞泵液力端，通过盘根总成将阀箱与柱塞隔开，提高阀箱的使用寿命；通过将柱塞和吸入压盖的端面由现有技术的平面改为弧面，提升吸入压盖的使用寿命；采用D型密封和L型密封替换O型密封，降低密封圈的可翻转性，提高密封性的同时防止密封圈在作业过程中因蠕动而产生磨损，延长使用寿命。将吸入压帽，排出压帽的端面由现有技术的完全平面增设弧形凹槽，提高吸入压帽，排出压帽的使用寿命。
本发明的目的是通过以下技术措施达到的：一种长寿命的柱塞泵液力端，所述柱塞泵液力端包括阀箱，柱塞和盘根总成，所述阀箱作为液体输送的容器，所述柱塞通过盘根总成与阀箱连接，所述盘根总成包括盘根组件，盘根套，盘根压帽，盘根套压帽，所述盘根套与阀箱密封连接，在盘根套与柱塞之间填充用于密封的盘根组件，盘根套压帽用于固定盘根套，盘根压帽用于固定盘根组件。
进一步地，所述柱塞泵液力端还包括吸入压帽、排出压帽、吸入压盖、排出压盖、吸入压盖密封、排出压盖密封、凡尔总成和弹簧支架，在阀箱的吸液口和排液口分别设置用于控制液体吸入和排出的凡尔总成，吸入压盖通过吸入压盖密封与阀箱吸液口密封连接，吸入压帽用于固定吸入压盖，排出压盖与阀箱排液口的凡尔总成连接，排出压盖通过排出压盖密封与阀箱排液口密封连接，排出压帽用于固定排出压盖，设在阀箱吸液口的凡尔总成通过弹簧支架与吸入压盖连接。
进一步地，所述吸入压盖的其中一个端面为弧面，在所述弧面上延伸出一凸起块，所述凸起块用于弹簧支架的连接。
进一步地，所述吸入压盖密封采用D型密封圈和L型密封圈相结合的形式。
进一步地，所述D型密封圈镶嵌在吸入压盖上。
进一步地，所述L型密封圈镶嵌在吸入压盖上。
进一步地，在所述吸入压盖上开设有第一直角端，在第一直角端位置相对应的阀箱上开设有第二直角端，所述第一直角端与第二直角端配合使用，所述第二直角用于限位吸入压盖，在第一直角端与第二直角端之间填充L型密封圈。
进一步地，所述L型密封圈的一端用于第一直角端与第二直角端之间竖直 方向的密封，所述L型密封圈的另一端用于第一直角端与第二直角端之间轴向的密封。
进一步地，所述吸入压帽的端面上开设有环形凹槽，所述凹槽设在靠近吸入压盖的一端上。
进一步地，所述排出压帽的端面上开设有环形凹槽，所述凹槽设在靠近排出压盖的一端上。
进一步地，所述环形凹槽的横截面为弧形。
进一步地，所述排出压盖密封采用D型密封圈密封，所述排出压盖密封镶嵌在排出压盖上。
进一步地，所述柱塞的端部为弧面。
进一步地，所述盘根套与阀箱之间采用D型密封圈和密封垫相结合的方式密封。
进一步地，所述盘根套为“Z”型结构，在阀箱上开设有沉台，所述沉台用于限位盘根套，在沉台与盘根套之间填充密封垫。
与现有技术相比，本发明的有益效果是：通过盘根总成将阀箱与柱塞隔开，提高阀箱的使用寿命；通过将柱塞和吸入压盖的端面由现有技术的平面改为弧面，提升吸入压盖的使用寿命；采用D型密封和L型密封替换O型密封，降低密封圈的可翻转性，提高密封性的同时防止密封圈在作业过程中因蠕动而产生磨损，延长使用寿命。将吸入压帽，排出压帽的端面由现有技术的完全平面增设弧形凹槽，提高吸入压帽，排出压帽的使用寿命。
下面结合附图和具体实施方式对本发明作详细说明。
附图说明
图1是所述柱塞泵液力端的整体剖视图。
图2是排出压帽或吸入压帽的剖视图。
图3是吸入压盖的剖视图。
其中，1.阀箱，2.排出压帽，3.排出压盖，4.D型密封圈，5.凡尔弹簧，6.凡尔体，7.凡尔座，8.L型密封圈，9.吸入压盖，10.弹簧支架，11.柱塞，12.吸入压帽，13.密封垫，14.盘根隔环，15.盘根包，16.盘根套，17.盘根压环，18.紧定螺钉，19.盘根压帽，20.盘根套压帽，21.第一直角端，22.第二直角端，23.凸起块，24.环形凹槽，25.沉台。
具体实施方式
如图1至3所示，一种长寿命的柱塞泵液力端，所述柱塞泵液力端包括阀箱1，柱塞11和盘根总成，所述阀箱1作为液体输送的容器，所述柱塞11通过盘根总成与阀箱1连接，所述盘根总成包括盘根组件，盘根套16，盘根压帽19，盘根套压帽20，所述盘根套16与阀箱1密封连接，具体的，所述盘根套16与阀箱1之间采用D型密封圈4和密封垫13相结合的方式密封。盘根套16的密封采用两道密封的方式，第一道密封采用D型密封圈4，密封槽在阀箱1上开设，作用是防止压裂砂进入盘根套16与阀箱1之间的缝隙中，便于后期更换盘根套16。第二道密封为金属密封垫13密封，作用是对阀箱1内的高压流体产生密封，防止高压流体泄漏。所述盘根套16为“Z”型结构，在阀箱1上开设有沉台25，所述沉台25用于限位盘根套16，在沉台25与盘根套16之间填充密封垫13，既能省去在盘根套16和阀箱1上开槽的工序，又能方便密封垫13的安装，还能对盘根套16和阀箱1起到增大密封面积，更好的密封。
在盘根套16与柱塞11之间填充用于密封的盘根组件，盘根套压帽20用于 压紧固定盘根套16，盘根压帽19利用螺纹将盘根组件压紧固定在盘根套16中，同时盘根套压帽20上安装防松紧定螺钉18。盘根组件包括盘根隔环14、盘根包15和盘根压环17，所述盘根隔环14、盘根包15和盘根压环17在盘根套16上由内而外依次设置。通过盘根总成中的盘根套16将阀箱1与柱塞11隔开，柱塞11的往复运动中，盘根组件磨损的只有盘根套16，相对于现有技术避免了盘根组件对阀箱1重复不间断的磨损而导致密封失效，作业过程中，盘根组件磨损甚至刺漏都不会对阀箱1造成损坏，只需更换磨损的盘根套16，提高了阀箱1的使用寿命；将盘根组件和盘根套16的压紧固定分开来，分别通过盘根压帽19和盘根套压帽20去压紧固定，能更好的根据盘根组件和盘根套16不同的性能特性有针对性的压紧，即为柱塞11提供更好的密封性，减少密封维修的时间，提升所述柱塞泵液力端的正常工作寿命。
进一步地，所述柱塞泵液力端还包括吸入压帽12、排出压帽2、吸入压盖9、排出压盖3、吸入压盖9密封、排出压盖3密封、凡尔总成和弹簧支架10，在阀箱1的吸液口和排液口分别设置用于控制液体吸入和排出的凡尔总成，吸入压盖9通过吸入压盖9密封与阀箱1吸液口密封连接，吸入压帽12用于固定吸入压盖9，排出压盖3与阀箱1排液口的凡尔总成连接，排出压盖3通过排出压盖3密封与阀箱1排液口密封连接，排出压帽2用于固定排出压盖3，设在阀箱1吸液口的凡尔总成通过弹簧支架10与吸入压盖9连接，弹簧支架10用于对凡尔总成进行限位，防止液体压力冲击下，凡尔总成在阀箱1内的晃动。(具体的，弹簧支架10与设在吸入腔的凡尔弹簧5连接)。凡尔总成包括凡尔体6，凡尔座7，凡尔弹簧5等，凡尔体6的一端连接凡尔座7，凡尔体6的另一端连接凡尔弹簧5。在阀箱1内部的竖直方向设有吸入腔和排出腔两个开口，水平方向设 有盘根腔和吸入压盖9腔两个开口，与吸入腔对应的是吸液口，与排出腔对应的是排液口，在排出腔中的凡尔弹簧5与排出压盖3连接，柱塞11在盘根腔中往复运动，吸入压盖9腔中设吸入压盖9和吸入压帽12。
进一步地，所述吸入压盖9的其中一个端面为弧面，在所述弧面上延伸出一凸起块23，所述凸起块23用于弹簧支架10的连接。当柱塞11在盘根腔体内高速朝向吸入压盖9方向运动时，柱塞11与吸入压盖9之间的流体会急剧压缩，吸入压盖9的弧面有助于流体及时向四周分散，一方面能够减少吸入压盖9及吸入压帽12的受力，另一方面大幅降低吸入压盖9与阀箱1的气蚀危害。
进一步地，所述吸入压盖9密封采用D型密封圈4和L型密封圈8相结合的形式。
进一步地，所述D型密封圈4镶嵌在吸入压盖9上。所述L型密封圈8镶嵌在吸入压盖9上。即在吸入压盖9上开设密封凹槽，将D型密封圈4和L型密封圈8分别填充在各自的密封凹槽内，D型密封圈4可有效避免现有技术中O型密封圈在密封槽内翻转而磨损失效。
在所述吸入压盖9上开设有第一直角端21，在第一直角端21位置相对应的阀箱1上开设有第二直角端22，所述第一直角端21与第二直角端22配合使用，所述第二直角用于限位吸入压盖9，在第一直角端21与第二直角端22之间填充L型密封圈8。
所述L型密封圈8的一端用于第一直角端21与第二直角端22之间竖直方向的密封，所述L型密封圈8的另一端用于第一直角端21与第二直角端22之间轴向的密封。通过第一直角端21与第二直角端22的配合，以及在第一直角端21与第二直角端22之间填充L型密封圈8，可以达到100％容隙填满，实现 吸入压盖9与阀箱1更好的密封，避免L型密封圈8在密封槽内快速蠕动而磨损阀箱1。
所述吸入压帽12的端面上开设有环形凹槽24，所述凹槽设在靠近吸入压盖9的一端上。
所述排出压帽2的端面上开设有环形凹槽24，所述凹槽设在靠近排出压盖3的一端。
所述环形凹槽24的横截面为弧形。弧形凹陷接触能够让吸入压帽12和排出压帽2上的力向后传递，使吸入压帽12和排出压帽2上的螺纹受力均匀，提升吸入压帽12和排出压帽2的使命寿命。
所述排出压盖3密封采用D型密封圈4密封，所述排出压盖3密封镶嵌在排出压盖3上。
所述柱塞11的端部为弧面。当柱塞11在盘根腔体内高速朝向吸入压盖9方向运动时，柱塞11与吸入压盖9之间的流体会急剧压缩，柱塞11的弧面有助于流体及时向四周分散，一方面能够减少吸入压盖9及吸入压帽12的受力，另一方面大幅降低柱塞11与阀箱1的气蚀危害。
本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (15)

  1. 一种长寿命的柱塞泵液力端，所述柱塞泵液力端包括阀箱，柱塞和盘根总成，所述阀箱作为液体输送的容器，所述柱塞通过盘根总成与阀箱连接，其特征在于：所述盘根总成包括盘根组件，盘根套，盘根压帽，盘根套压帽，所述盘根套与阀箱密封连接，在盘根套与柱塞之间填充用于密封的盘根组件，盘根套压帽用于固定盘根套，盘根压帽用于固定盘根组件。
  2. 根据权利要求1所述的长寿命的柱塞泵液力端，其特征在于：所述柱塞泵液力端还包括吸入压帽、排出压帽、吸入压盖、排出压盖、吸入压盖密封、排出压盖密封、凡尔总成和弹簧支架，在阀箱的吸液口和排液口分别设置用于控制液体吸入和排出的凡尔总成，吸入压盖通过吸入压盖密封与阀箱吸液口密封连接，吸入压帽用于固定吸入压盖，排出压盖与阀箱排液口的凡尔总成连接，排出压盖通过排出压盖密封与阀箱排液口密封连接，排出压帽用于固定排出压盖，设在阀箱吸液口的凡尔总成通过弹簧支架与吸入压盖连接。
  3. 根据权利要求2所述的长寿命的柱塞泵液力端，其特征在于：所述吸入压盖的其中一个端面为弧面，在所述弧面上延伸出一凸起块，所述凸起块用于弹簧支架的连接。
  4. 根据权利要求2所述的长寿命的柱塞泵液力端，其特征在于：所述吸入压盖密封采用D型密封圈和L型密封圈相结合的形式。
  5. 根据权利要求4所述的长寿命的柱塞泵液力端，其特征在于：所述D型密封圈镶嵌在吸入压盖上。
  6. 根据权利要求4所述的长寿命的柱塞泵液力端，其特征在于：所述L型密封圈镶嵌在吸入压盖上。
  7. 根据权利要求6所述的长寿命的柱塞泵液力端，其特征在于：在所述吸入压盖上开设有第一直角端，在第一直角端位置相对应的阀箱上开设有第二直角端，所述第一直角端与第二直角端配合使用，所述第二直角用于限位吸入压盖，在第一直角端与第二直角端之间填充L型密封圈。
  8. 根据权利要求7所述的长寿命的柱塞泵液力端，其特征在于：所述L型密封圈的一端用于第一直角端与第二直角端之间竖直方向的密封，所述L型密封圈的另一端用于第一直角端与第二直角端之间轴向的密封。
  9. 根据权利要求2所述的长寿命的柱塞泵液力端，其特征在于：所述吸入压帽的端面上开设有环形凹槽，所述凹槽设在靠近吸入压盖的一端上。
  10. 根据权利要求2所述的长寿命的柱塞泵液力端，其特征在于：所述排出压帽的端面上开设有环形凹槽，所述凹槽设在靠近排出压盖的一端上。
  11. 根据权利要求10所述的长寿命的柱塞泵液力端，其特征在于：所述环形凹槽的横截面为弧形。
  12. 根据权利要求2所述的长寿命的柱塞泵液力端，其特征在于：所述排出压盖密封采用D型密封圈密封，所述排出压盖密封镶嵌在排出压盖上。
  13. 根据权利要求1所述的长寿命的柱塞泵液力端，其特征在于：所述柱塞的端部为弧面。
  14. 根据权利要求1所述的长寿命的柱塞泵液力端，其特征在于：所述盘根套与阀箱之间采用D型密封圈和密封垫相结合的方式密封。
  15. 根据权利要求14所述的长寿命的柱塞泵液力端，其特征在于：所述盘根套为“Z”型结构，在阀箱上开设有沉台，所述沉台用于限位盘根套，在沉台与盘根套之间填充密封垫。
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