WO2020052050A1 - 一种高压隔膜压缩机及其缸盖及缸盖的加工方法 - Google Patents

一种高压隔膜压缩机及其缸盖及缸盖的加工方法 Download PDF

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Publication number
WO2020052050A1
WO2020052050A1 PCT/CN2018/115438 CN2018115438W WO2020052050A1 WO 2020052050 A1 WO2020052050 A1 WO 2020052050A1 CN 2018115438 W CN2018115438 W CN 2018115438W WO 2020052050 A1 WO2020052050 A1 WO 2020052050A1
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exhaust
cylinder head
hole
valve
cavity
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PCT/CN2018/115438
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English (en)
French (fr)
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彭学院
汪婷
陈嘉豪
贾晓晗
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西安交通大学
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Publication of WO2020052050A1 publication Critical patent/WO2020052050A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125Cylinder heads
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10Adaptations or arrangements of distribution members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/053Pumps having fluid drive
    • F04B45/0533Pumps having fluid drive the fluid being actuated directly by a piston

Definitions

  • the invention belongs to the field of diaphragm compressors, and in particular relates to a high-pressure diaphragm compressor and a method for processing its cylinder head and cylinder head.
  • Diaphragm compressor is a special positive displacement compressor.
  • the lubricant and compressed gas are completely separated by a set of diaphragms to ensure that the gas is not contaminated. It has two major characteristics: one is that it is well sealed and does not pollute the compressed medium; the other is that the compression ratio is large and it is easy to achieve high pressure. Based on these characteristics, diaphragm compressors are widely used in petrochemical, coal chemical, metallurgical, national defense, military, aerospace, new energy, nuclear power, gas filling, and experimental research departments of modern science and technology.
  • the deformation and stress of diaphragm compressor cylinder head and other components under high pressure and high temperature have an important impact on the reliability of the compressor.
  • the discharge temperature of the compressor can reach above 200 ° C, and the temperature distribution of the diaphragm compressor cylinder head, especially the part located at the central exhaust hole of the cylinder head, shows obvious non-uniformity.
  • the area at the center exhaust hole of the cylinder head and the cylinder head are designed as an integrated structure. At this time, under high exhaust temperature, the heat at the exhaust hole cannot be discharged in time, and the temperature is high.
  • the limitation of the air hole structure makes the deformation of the exhaust hole extremely restricted and cannot fully expand, resulting in large thermal stress on the inner surface of the small hole, which has a great impact on the strength of the diaphragm compressor. Therefore, how to provide a high-pressure diaphragm compressor cylinder head, reduce the stress at the exhaust hole of the diaphragm compressor cylinder head, and increase the strength of the diaphragm compressor cylinder head is the goal pursued by the designer.
  • the object of the present invention is to provide a high-pressure diaphragm compressor and a method for processing its cylinder head and cylinder head, which can solve the problem that the deformation at the exhaust hole of the diaphragm compressor is greatly restricted due to the excessive temperature, and the expansion cannot be sufficiently caused, thereby causing small The problem of excessive thermal stress on the inner surface of the hole.
  • the invention discloses a cylinder head of a high-pressure diaphragm compressor, which includes a cylinder head body, an arc-shaped groove is formed on an inner wall of the cylinder head body, and an intake valve hole, an exhaust valve hole, and an exhaust chamber are provided in the cylinder head body.
  • the exhaust chamber communicates with the exhaust valve hole; the centerline of the exhaust chamber, the centerline of the exhaust valve hole, and the centerline of the cylinder head body coincide, and the intake valve hole is arranged near the exhaust valve hole side;
  • An exhaust valve is installed below the exhaust valve hole, and an exhaust hole block is installed in the exhaust cavity.
  • a mounting step is provided in the exhaust chamber, and the plugging of the exhaust hole adopts a stepped shaft structure matching the mounting step.
  • an exhaust hole blocking gasket is provided at the mounting surface of the exhaust hole blocking and mounting step.
  • an exhaust connection cavity is also provided in the exhaust valve hole, and the exhaust connection cavity is installed above the exhaust valve and is used to compact the exhaust valve.
  • a pressure valve cover is provided at the top end of the exhaust connection cavity, the pressure valve cover and the exhaust connection cavity are fastened by a fastening stud, the pressure valve cover presses the exhaust valve through the exhaust connection cavity, and exhausts The valve blocks the exhaust hole and presses it against the bottom of the cylinder head body.
  • an exhaust valve gasket is provided on the mounting surface of the exhaust valve and the exhaust valve hole and on the contact surface of the exhaust valve and the exhaust connection cavity.
  • a corrugated spring is provided between the exhaust hole plug and the exhaust valve.
  • the outer diameter of the exhaust hole plug is smaller than the inner diameter of the exhaust cavity by 1 mm.
  • the invention also discloses a high-pressure diaphragm compressor, comprising a compression cylinder, the compression cylinder including a cylinder block, and the above-disclosed cylinder head and an oil distribution plate provided between the cylinder body and the cylinder head.
  • a diaphragm in the cavity.
  • the inner wall of the cylinder head and the diaphragm form an air cavity, and the diaphragm and the inner wall of the oil distribution plate form an oil cavity.
  • the invention also discloses a method for processing the cylinder head of the high-pressure diaphragm compressor, which includes the following steps:
  • the inner surface of the cylinder head body is processed with a film cavity profile, that is, an arc-shaped groove.
  • the present invention has the following beneficial technical effects:
  • the cylinder head of the high-pressure diaphragm compressor disclosed in the present invention digs out the exhaust hole area that was originally integrated with the cylinder head.
  • An independent exhaust hole block is installed in the hollowed out part, and a plurality of exhaust holes are provided on the exhaust hole block.
  • the outer diameter of the exhaust hole is smaller than the inner diameter of the exhaust cavity, which solves the problem that the deformation of the exhaust hole is greatly restricted due to the structural limitation under high temperature and high pressure conditions, which cannot fully expand, resulting in small holes.
  • the exhaust hole blockage is installed in the exhaust cavity through the installation step, so that the exhaust hole blockage can be caught at the installation step of the exhaust cavity, thereby ensuring that the exhaust hole blockage can be installed in the exhaust cavity.
  • a sealing pad is provided at the installation surface of the exhaust hole blockage and the installation step, and is sealed by the gasket, while preventing the exhaust hole blockage from directly contacting and wearing the installation step, and protecting the exhaust hole blockage.
  • an exhaust connection cavity is provided in the exhaust valve hole, and a pressure valve cover is provided at the top of the exhaust connection cavity.
  • the pressure valve cover is connected to the exhaust connection cavity through a fastening stud, and the pressure valve cover is connected to the exhaust connection cavity through the exhaust connection cavity.
  • the exhaust valve is pressed tightly, so that the exhaust valve is pressed to block the exhaust hole, and the tightness of the installation of the exhaust hole block can be achieved by adjusting the fastening stud.
  • a gasket is provided on the mounting surface of the exhaust valve and the exhaust valve hole and the contact surface of the exhaust valve and the exhaust connection chamber. In addition to the role of sealing and isolation, the exhaust valve and exhaust can be prevented The friction of the connection chamber is damaged.
  • a corrugated spring is installed between the exhaust hole blockage and the exhaust valve to ensure that the exhaust hole blockage gasket is pressed tightly and prevent loosening, and at the same time, the exhaust valve block gasket and the exhaust hole block gasket are not blocked. Interference due to the same direction.
  • the high-pressure diaphragm compressor disclosed by the present invention includes a cylinder head, a cylinder block, and an oil distribution plate provided between the cylinder head and the cylinder block. Machine's overall service life.
  • the exhaust hole In the method for processing the cylinder head of the high-pressure diaphragm compressor disclosed in the present invention, the exhaust hole must be blocked and installed on the cylinder head, and then the cavity surface of the diaphragm compressor must be processed together with the cylinder head to ensure the membrane cavity type. The integrity of the surface enables the diaphragm to fully fit the arc-shaped groove without being affected by the blockage of the exhaust hole during the working process.
  • FIG. 1 is a schematic structural diagram of a cylinder head of a diaphragm compressor according to the present invention
  • FIG. 2 is a schematic structural cross-sectional view of an exhaust hole blockage according to the present invention.
  • FIG. 3 is a partial schematic diagram of a cylinder valve exhaust valve and an exhaust chamber of the diaphragm compressor according to the present invention
  • 1 is the exhaust hole block
  • 2 is the ripple spring
  • 3 is the exhaust hole block gasket
  • 4 is the mounting step
  • 5 is the exhaust valve
  • 6 is the exhaust valve gasket
  • 7 is the exhaust connection cavity
  • 8 Is pressure valve cover
  • 9 is fastening stud
  • 10 is cylinder head body
  • 11 is arc groove
  • 12 is air cavity
  • 13 is exhaust cavity
  • 14 is exhaust valve hole
  • 15 is intake valve hole
  • 16 Is an exhaust hole
  • 01 is a cylinder head
  • 02 is an oil distribution plate
  • 03 is a cylinder block
  • 04 is an oil hole.
  • the high-pressure diaphragm compressor cylinder head 01 of the present invention includes a cylinder head body 10.
  • the cylinder head body 10 is provided with an intake valve hole 15, an exhaust valve hole 14, and an exhaust chamber 13.
  • the centerline of the exhaust chamber 13, the centerline of the exhaust valve hole 14, and the centerline of the cylinder head body 10 coincide.
  • the intake valve hole 15 is disposed near the exhaust valve hole 14 side, and the exhaust chamber 13 and the exhaust valve
  • the hole 14 is a communicating cavity.
  • the inner wall of the cylinder head body 10 is provided with an arc-shaped groove 11 for forming an air cavity 12 with the diaphragm.
  • the exhaust valve hole 14 is provided with an exhaust valve 5 and the exhaust cavity 13 is installed.
  • the exhaust hole 16 communicates the air cavity 12 with the exhaust valve 5.
  • the cylinder head of the high-pressure diaphragm compressor of the present invention is mainly a cavity body formed by exhausting an area where the exhaust hole was originally provided in the center of the cylinder head body 10 to form an exhaust cavity 13, and the hollowed out part is replaced by an independent exhaust hole 1 .
  • the outer diameter of the exhaust hole block 1 is smaller than the inner diameter of the exhaust cavity 13.
  • the diameter of the outer ring of the exhaust hole block 1 is smaller than the hole diameter of the corresponding area of the cylinder head body 10 by about 1 mm, so that At high temperatures, the exhaust hole blockage 1 and the corresponding structure of the cylinder head body 10 have sufficient space for thermal expansion, which greatly enhances the strength of the cylinder head of the high-pressure diaphragm compressor, has a simple structure, is easy to disassemble, and does not affect the normal operation of the diaphragm compressor. .
  • the exhaust chamber 13 is provided with a mounting step 4, and the exhaust hole plugging 1 adopts a stepped shaft structure matching the mounting step 4, so that the stepped surface of the exhaust hole plugging 1 can be stuck on the mounting step 4. It is ensured that the exhaust hole block 1 can be installed in the exhaust cavity 13.
  • the exhaust valve hole 14 is also provided with an exhaust connection cavity 7.
  • the exhaust connection cavity 7 is a sleeve structure, and it is easy for the gas discharged from the exhaust hole 16 opened on the exhaust hole block 1 to pass through. 7 is installed above the exhaust valve 5, the top of the exhaust connection chamber 7 is provided with a pressure valve cover 8, the pressure valve cover 8 presses the exhaust valve 5 through the exhaust connection chamber 7 under the action of the fastening stud 9 Tight, the exhaust hole block 1 is fastened to the bottom of the cylinder head body 10 under the action of the compressed exhaust valve 5.
  • the gap between the exhaust hole block 1 and the mounting step 4 is sealed by the exhaust hole block gasket 3, the mounting surface of the exhaust valve 5 and the exhaust valve hole 14, and the exhaust valve 5 and the exhaust connection chamber.
  • the contact surface of 7 is provided with an exhaust valve gasket 6.
  • a corrugated spring 2 is provided between the exhaust hole blockage 1 and the exhaust valve 5 to ensure that the exhaust hole blockage gasket 3 is tightly pressed to prevent loosening, and at the same time, the exhaust valve seal gasket 6 and the exhaust hole are not blocked and sealed.
  • the pads 3 interfere in the same direction.
  • the processing method of the diaphragm compressor cylinder head of the present invention is specifically:
  • the cylinder of the high-pressure diaphragm compressor includes a cylinder head 01 and a cylinder block 03.
  • An oil distribution plate 02 is provided between the cylinder head 01 and the cylinder body 03.
  • a number of oil holes 04 are provided on the oil distribution plate 02.
  • a diaphragm is arranged above the oil distribution plate 02.
  • An air cavity 12 is formed between the diaphragm and the inner wall of the cylinder head 01, and an oil cavity is formed between the diaphragm and the oil distribution plate 02.
  • the piston or plunger pushes the oil cylinder to input oil into the oil chamber, and drives the diaphragm to compress the gas in the air chamber 12, and the compressed high-pressure gas in the air chamber 12 is blocked through the exhaust hole 1 and enters the exhaust valve 5
  • the diaphragm compressor is discharged through the exhaust valve hole 14 again, so that the purpose of gas compression is achieved back and forth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

一种高压隔膜压缩机及其缸盖及缸盖的加工方法,包括缸盖本体(10),缸盖本体(10)上设有排气阀(5)、排气孔堵塞(1)和排气腔(13),将缸盖(01)中心开设排气孔的区域挖去作为排气腔(13),排气孔堵塞(1)独立安装在排气腔(13)中;排气孔堵塞(1)与排气阀(5)之间设有波纹弹簧(2);排气孔堵塞(1)须在缸盖(01)上安装好之后,与缸盖(01)一起进行隔膜压缩机膜腔型面的加工;排气孔堵塞(1)结构的外径小于排气腔(13)的内径。该结构解决了在高温高压情况下,排气孔由于结构的限制,使得排气孔处变形受到极大约束而不能够充分膨胀,导致小孔内表面热应力很大的问题,能够减小排气孔因高温产生的热应力,使得高压隔膜压缩机缸盖强度得到提升,不影响隔膜压缩机的正常运行。

Description

一种高压隔膜压缩机及其缸盖及缸盖的加工方法 技术领域
本发明属于隔膜压缩机领域,具体涉及一种高压隔膜压缩机及其缸盖及缸盖的加工方法。
背景技术
隔膜压缩机是一种特殊的容积式压缩机,通过一组膜片将润滑油和压缩气体完全分开,保证气体不被污染。它具有两大特点:一是密封好,不污染被压缩介质;二是压缩比大,易实现高压。基于这些特点,隔膜压缩机广泛用于石油化工、煤化工、冶金、国防军工、航空航天、新能源、核电、气体灌充以及现代科学技术的实验研究部门等。
隔膜压缩机缸盖等部件在高压、高温下的变形和应力,对压缩机的可靠性有着重要的影响。高压比、大功率下,压缩机排气温度能够达到200℃以上,且隔膜压缩机缸盖,特别是位于缸盖中心排气孔处的部分温度分布呈现出明显的不均匀性。
对于传统的隔膜压缩机,缸盖中心排气孔处的区域与缸盖设计为一体的结构,此时在高排气温度下,排气孔处热量不能及时导出,温度较高,同时由于排气孔结构的限制,使得排气孔处变形受到极大约束而不能够充分膨胀,导致小孔内表面热应力很大,这对隔膜压缩机的强度有着很大的影响。因此如何提供一种能改善高压隔膜压缩机缸盖,降低隔膜压缩机缸盖排气孔处的应力,提高隔膜压缩机缸头强度,是设计者追求的目标。
发明内容
本发明的目的在于提供一种高压隔膜压缩机及其缸盖及缸盖的加工方法,能够解决由于温度过高使得隔膜压缩机排气孔处变形受到极大约束而不能充 分膨胀,进而导致小孔内表面热应力过大的问题。
本发明是通过以下技术方案来实现:
本发明公开了一种高压隔膜压缩机缸盖,包括缸盖本体,缸盖本体的内壁上开设有弧形槽,缸盖本体内设有进气阀孔、排气阀孔及排气腔,排气腔与排气阀孔连通;排气腔的中心线、排气阀孔的中心线及缸盖本体的中心线三线重合,进气阀孔靠近排气阀孔一侧设置;
排气阀孔下方安装有排气阀,排气腔内安装有排气孔堵塞,排气孔堵塞内开有若干个排气孔;排气孔堵塞的外径小于排气腔的内径。
优选地,排气腔内设有安装台阶,排气孔堵塞采用与该安装台阶相匹配的阶梯轴结构。
优选地,排气孔堵塞与安装台阶的安装面处设有排气孔堵塞密封垫。
优选地,排气阀孔内还设有排气连接腔,排气连接腔安装在排气阀的上方,用于压紧排气阀。
进一步优选地,排气连接腔的顶端设有压阀盖,压阀盖与排气连接腔通过紧固螺柱紧固连接,压阀盖通过排气连接腔将排气阀压紧,排气阀将排气孔堵塞压紧于缸盖本体底部。
进一步优选地,排气阀与排气阀孔的安装面上及排气阀与排气连接腔的接触面上均设有排气阀密封垫。
优选地,排气孔堵塞与排气阀之间设有波纹弹簧。
优选地,排气孔堵塞的外径比排气腔的内径小1mm。
本发明还公开了一种高压隔膜压缩机,包括压缩气缸,压缩气缸包括缸体、和上述公开的缸盖和设置在缸体与缸盖之间的配油盘,在配油盘与缸盖之间的腔体内设有膜片,缸盖内壁与膜片形成气腔,膜片与配油盘内壁形成油腔;在配油盘上开有若干个油孔,油孔将缸体与油腔连通。
本发明还公开了加工上述高压隔膜压缩机缸盖的方法,包括以下步骤:
1)首先加工好缸盖本体和排气孔堵塞,在缸盖本体内加工好进气阀孔、排气阀孔和排气腔;
2)在排气腔内依次安装好排气孔堵塞和排气阀,将排气孔堵塞和排气阀安装固定好;
3)在缸盖本体的内壁上加工膜腔型面即弧形槽。
与现有技术相比,本发明具有以下有益的技术效果:
本发明公开的高压隔膜压缩机缸盖,将原本与缸盖一体的排气孔区域挖去,在挖空部分安装独立的排气孔堵塞,排气孔堵塞上开设有若干个排气孔,同时排气孔堵塞的外径小于排气腔的内径,解决了在高温高压情况下,排气孔由于结构的限制,使得排气孔处变形受到极大约束而不能够充分膨胀,导致小孔内表面热应力很大的问题,使得在高温下排气孔堵塞与缸盖相应结构都有充足的空间进行热膨胀,使得高压隔膜压缩机缸盖强度得到大大提升,结构简单,拆装方便,且不影响隔膜压缩机的正常运行。
进一步,排气孔堵塞通过安装台阶安装在排气腔中,使得排气孔堵塞能够卡在排气腔的安装台阶处,保证了排气孔堵塞能够安装在排气腔中。
进一步,在排气孔堵塞与安装台阶的安装面处设有密封垫,通过密封垫密封,同时防止排气孔堵塞直接与安装台阶接触磨损,起到保护排气孔堵塞的作用。
进一步,排气阀孔内设有排气连接腔,排气连接腔顶端设有压阀盖,压阀盖通过紧固螺柱连接在排气连接腔上,压阀盖通过排气连接腔将排气阀压紧,进而使得排气阀压紧排气孔堵塞,通过调整紧固螺柱就可以实现排气孔堵塞的安装松紧度。
进一步,在排气阀与排气阀孔的安装面上及排气阀与排气连接腔的接触面上均设有密封垫,除了密封隔离的作用以外,还可以防止排气阀和排气连接腔摩擦受损。
进一步,在排气孔堵塞和排气阀之间加设波纹弹簧,确保排气孔堵塞密封垫被压紧,并防止松动,同时也不会使排气阀密封垫与排气孔堵塞密封垫由于在同一方向而产生干涉。
本发明公开的高压隔膜压缩机,包括了缸盖、缸体和设置在缸盖与缸体之间的配油盘,缸盖采用上述的安装独立的排气孔堵塞的结构,延长了隔膜压缩机的整机使用寿命。
本发明公开的高压隔膜压缩机缸盖的加工方法,必须先将排气孔堵塞在缸盖上安装固定好,然后再与缸盖一起进行隔膜压缩机膜腔型面的加工,保证膜腔型面的完整性,使得膜片在工作过程中能够完全贴合弧形槽而不受到排气孔堵塞的影响。
附图说明
图1为本发明隔膜压缩机缸盖结构示意图;
图2为本发明排气孔堵塞剖面结构示意图;
图3为本发明隔膜压缩机缸盖排气阀和排气腔处的局部示意图;
其中,1为排气孔堵塞,2为波纹弹簧,3为排气孔堵塞密封垫,4为安装台阶,5为排气阀,6为排气阀密封垫,7为排气连接腔,8为压阀盖,9为紧固螺柱,10为缸盖本体,11为弧形槽,12为气腔,13为排气腔,14为排气阀孔,15为进气阀孔,16为排气孔,01为缸盖,02为配油盘,03为缸体,04为油孔。
具体实施方式
下面结合具体的实施例对本发明做进一步的详细说明,所述是对本发明的解释而不是限定。
如图1~图2所示,本发明的高压隔膜压缩机缸盖01,包括缸盖本体10,缸盖本体10内设有进气阀孔15、排气阀孔14及排气腔13,排气腔13的中心线、排气阀孔14的中心线及缸盖本体10的中心线三线重合,进气阀孔15靠 近排气阀孔14一侧设置,排气腔13与排气阀孔14为连通的孔腔,缸盖本体10的内壁上设有用于与膜片形成气腔12的弧形槽11;排气阀孔14内安装有排气阀5,排气腔13内安装有排气孔堵塞1,排气孔堵塞1内开有若干个排气孔16,排气孔16将气腔12与排气阀5连通。
本发明的高压隔膜压缩机缸盖,主要是将缸盖本体10中心原来开设排气孔的区域挖去形成排气腔13这样一个空腔体,挖空部分由独立的排气孔堵塞1代替。
排气孔堵塞1的外径小于排气腔13的内径,一般情况下,排气孔堵塞1的外圈直径要比缸盖本体10上被挖去的相应区域的孔径小约1mm,使得在高温下排气孔堵塞1与缸盖本体10相应结构都有充足的空间进行热膨胀,使得高压隔膜压缩机缸盖强度得到大大提升,结构简单,拆装方便,且不影响隔膜压缩机的正常运行。
如图3所示,排气腔13内设有安装台阶4,排气孔堵塞1采用与安装台阶4相匹配的阶梯轴结构,使得排气孔堵塞1的台阶面正好可以卡在安装台阶4处,保证排气孔堵塞1能够安装在排气腔13内。
排气阀孔14内还设有排气连接腔7,排气连接腔7为套筒结构,易于使得从排气孔堵塞1上开设的排气孔16中排出的气体通过,排气连接腔7安装在排气阀5的上方,排气连接腔7的顶端设有压阀盖8,压阀盖8在紧固螺柱9的作用下,通过排气连接腔7将排气阀5压紧,排气孔堵塞1则在被压紧的排气阀5作用下紧固于缸盖本体10底部。
更优地是,排气孔堵塞1与安装台阶4之间通过排气孔堵塞密封垫3密封,排气阀5与排气阀孔14的安装面上及排气阀5与排气连接腔7的接触面上均设有排气阀密封垫6。
排气孔堵塞1与排气阀5之间设有波纹弹簧2,确保排气孔堵塞密封垫3被压紧,防止松动,同时也不会使排气阀密封垫6与排气孔堵塞密封垫3由于 在同一方向而产生干涉。
本发明隔膜压缩机缸盖的加工方法,具体为:
1)首先加工好缸盖本体10和排气孔堵塞1,在缸盖本体10内加工好进气阀孔15、排气阀孔14和排气腔13;
2)在排气腔13内依次安装好排气孔堵塞1和排气阀5,将排气孔堵塞1和排气阀5安装固定好;
3)排气孔堵塞1必须在缸盖本体10上安装固定好之后,与缸盖本体10一起进行膜腔型面的加工,保证膜腔型面的完整性,使得膜片在工作过程中能够完全贴合弧形槽11而不受到排气孔堵塞1的影响。
如图1所示,高压隔膜压缩机的气缸包括缸盖01和缸体03,缸盖01和缸体03之间设有配油盘02,配油盘02上设有若干个油孔04,配油盘02上方设有膜片,膜片与缸盖01内壁之间形成气腔12,膜片与配油盘02之间形成油腔。当压缩机启动后,缸体03内油压向上驱动,穿过油孔04进入到油腔中,当油腔中的油逐渐减少时,待压缩气体进入到气腔12中,达到预设体积后,活塞或者柱塞推动油缸将油输入到油腔中,并带动膜片运动,压缩气腔12中的气体,气腔12内经过压缩的高压气体通过排气孔堵塞1进入排气阀5中,再由排气阀孔14排出隔膜压缩机,如此往复实现了气体压缩的目的。

Claims (10)

  1. 一种高压隔膜压缩机缸盖,其特征在于,包括缸盖本体(10),缸盖本体(10)的内壁上开设有弧形槽(11),缸盖本体(10)内设有进气阀孔(15)、排气阀孔(14)及排气腔(13),排气腔(13)与排气阀孔(14)连通;排气腔(13)的中心线、排气阀孔(14)的中心线及缸盖本体(10)的中心线三线重合,进气阀孔(15)靠近排气阀孔(14)一侧设置;
    排气阀孔(14)下方安装有排气阀(5),排气腔(13)内安装有排气孔堵塞(1),排气孔堵塞(1)内开有若干个排气孔(16);排气孔堵塞(1)的外径小于排气腔(13)的内径。
  2. 根据权利要求1所述的一种高压隔膜压缩机缸盖,其特征在于,排气腔(13)内设有安装台阶(4),排气孔堵塞(1)采用与该安装台阶(4)相匹配的阶梯轴结构。
  3. 根据权利要求2所述的一种高压隔膜压缩机缸盖,其特征在于,排气孔堵塞(1)与安装台阶(4)的安装面处设有排气孔堵塞密封垫(3)。
  4. 根据权利要求1所述的一种高压隔膜压缩机缸盖,其特征在于,排气阀孔(14)内还设有排气连接腔(7),排气连接腔(7)安装在排气阀(5)的上方,用于压紧排气阀(5)。
  5. 根据权利要求4所述的一种高压隔膜压缩机缸盖,其特征在于,排气连接腔(7)的顶端设有压阀盖(8),压阀盖(8)与排气连接腔(7)通过紧固螺柱紧固连接,压阀盖(8)通过排气连接腔(7)将排气阀(5)压紧,排气阀(5)将排气孔堵塞(1)压紧于缸盖本体(10)底部。
  6. 根据权利要求4所述的一种高压隔膜压缩机缸盖,其特征在于,排气阀(5)与排气阀孔(14)的安装面上及排气阀(5)与排气连接腔(7)的接触面上均设有排气阀密封垫(6)。
  7. 根据权利要求3或6所述的一种高压隔膜压缩机缸盖,其特征在于,排气孔堵塞(1)与排气阀(5)之间设有波纹弹簧(2)。
  8. 根据权利要求1所述的一种高压隔膜压缩机缸盖,其特征在于,排气孔堵塞(1)的外径比排气腔(13)的内径小1mm。
  9. 一种高压隔膜压缩机,其特征在于,包括压缩气缸,压缩气缸包括缸体(03)、权利要求1~8中任意一项所述的缸盖和设置在缸体(03)与缸盖之间的配油盘(02),在配油盘(02)与缸盖之间的腔体内设有膜片,缸盖内壁与膜片形成气腔,膜片与配油盘(02)内壁形成油腔;在配油盘(02)上开有若干个油孔(04),油孔(04)将缸体(03)与油腔连通。
  10. 加工权利要求1~8任一项所述高压隔膜压缩机缸盖的方法,其特征在于,包括以下步骤:
    1)首先加工好缸盖本体(10)和排气孔堵塞(1),在缸盖本体(10)内加工好进气阀孔(15)、排气阀孔(14)和排气腔(13);
    2)在排气腔(13)内依次安装好排气孔堵塞(1)和排气阀(5),将排气孔堵塞(1)和排气阀(5)安装固定好;
    3)在缸盖本体(10)的内壁上加工膜腔型面即弧形槽(11)。
PCT/CN2018/115438 2018-09-11 2018-11-14 一种高压隔膜压缩机及其缸盖及缸盖的加工方法 WO2020052050A1 (zh)

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