WO2012009858A1 - 能改善进气状态的天然气压缩机 - Google Patents
能改善进气状态的天然气压缩机 Download PDFInfo
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- WO2012009858A1 WO2012009858A1 PCT/CN2010/075412 CN2010075412W WO2012009858A1 WO 2012009858 A1 WO2012009858 A1 WO 2012009858A1 CN 2010075412 W CN2010075412 W CN 2010075412W WO 2012009858 A1 WO2012009858 A1 WO 2012009858A1
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- heat exchange
- natural gas
- gas compressor
- gas
- heat
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Classifications
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- 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
- F04B39/00—Component 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
- F04B39/06—Cooling; Heating; Prevention of freezing
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- 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
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
Definitions
- BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of compressors, and more particularly to a natural gas compressor in which an intake state is improved.
- Natural gas compressors are generally multi-stage, multi-column structures, with two columns of three stages and two columns of four stages being the most common, and often combining high pressure and low pressure stages in a column to form a stepped type.
- Fig. 1 is a schematic view showing the structure of a conventional two-stage four-stage natural gas compressor. As shown in Fig. 1, two links 26 are juxtaposed on the crankshaft 24, and the respective links 26 are connected to the piston members 28, 29 via a cross connector 27.
- the crankshaft 24 is coupled to the power source 21 via a flywheel 23 and a coupling 22.
- the two sides of the piston member 28 form a first-stage gas rainbow 11 and a fourth-stage gas rainbow 14
- two sides of the piston member 29 form a second gas red 12 and a third gas red 13
- the first gas red and the fourth gas A balance chamber 16 is formed between the red
- a balance chamber 15 is formed between the secondary cylinder 12 and the tertiary cylinder 13.
- the differential natural gas compressor needs to balance the piston force, and the balance of the piston force is achieved by the balance tube.
- the balance pipe leads the gas between the two pistons in one column (ie, the gas in the balance chambers 15, 16) to the primary suction port or the secondary suction port to balance the piston force, thus reducing the compressor Comprehensive piston force.
- the introduction of the balance pipe causes the intake of the compressor to decrease and the intake state to deteriorate, which needs to be solved.
- An object of the present invention is to provide a natural gas compressor for improving the intake state of natural gas, which solves the problems of high intake and exhaust temperatures of the conventional compressor due to high gas temperature of the balance pipe, and reduction of the suction amount of the compressor.
- the present invention provides a natural gas compressor comprising a heat dissipating device disposed between a balance chamber and a predetermined suction port, the heat dissipating device having a flow conduit connecting the balance chamber and the predetermined suction port.
- the heat dissipating device is a heat dissipating balance pipe, which comprises a pipe body forming a through-flow pipe, a groove formed on the inner wall of the pipe body to increase the heat transfer effect of the gas, and heat dissipating fins formed on the outer wall of the pipe body.
- the groove is a spiral groove.
- the heat dissipating device includes: a heat exchange box having a cooling medium; and a heat exchange tube forming a through-flow duct located in the heat exchange box.
- the heat exchange box has a plurality of parallel-arranged cooling medium guiding partitions, and the cooling medium partitions form an S-shaped cooling medium circulation passage in the heat exchange box.
- the outlet of the cooling medium on the heat exchange box is adjacent to a side of the heat exchange tube that is close to the balance chamber, and the inlet of the cooling medium on the heat exchange box is near a side of the heat exchange tube that is close to the predetermined intake port.
- the heat exchange tube is an S-shaped tube.
- the heat dissipating device is an air cooler, and a heat exchange tube is added to the air cooler, and a throughflow duct is formed in the heat exchange tube.
- the invention reduces the temperature of the gas entering the intake port of the natural gas compressor through the heat dissipating device communicating with the balance cavity, and on the other hand, suppresses the problem that the intake port is reduced due to the thermal expansion of the gas, and on the other hand, solves the problem.
- the conventional compressor has a problem that the suction and exhaust temperatures are high due to the high temperature of the balance tube gas.
- FIG. 1 is a schematic structural view of a conventional natural gas compressor
- FIG. 2 is a schematic structural view showing a heat dissipating device connected to a balance chamber of a natural gas compressor according to a first embodiment of the present invention
- a schematic structural view of a heat sink connected to a balance chamber of a natural gas compressor according to a second embodiment of the present invention is shown.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
- FIG. 2 is a view showing the configuration of a heat dissipating device connected to a balance chamber of a natural gas compressor according to a first embodiment of the present invention.
- one side of the piston member 28 of the natural gas compressor forms a first gas red 11 and the other side forms a fourth-level gas red 14, and a balance chamber 16 is formed between the first gas red 11 and the fourth gas red 14.
- the balance chamber 16 is connected to the heat sink 30, and the heat sink is configured as a heat balance tube 30.
- the heat balance tube 30 includes a tube body 31 forming a through-flow duct, a heat sink 31a disposed on the outer wall of the tube, and a cavity disposed inside the tube body. Spiral groove 31b.
- the intake port 30a of the pipe body 31 is connected to the balance chamber 16, and the air outlet port 30b of the pipe body 31 is connected to the predetermined intake port 10a of the natural gas compressor.
- the design of the spiral groove 31b in the tube causes turbulence in the gas inside the tube.
- the combination of the fins 31a and the spiral groove 31b increases the heat transfer coefficient inside and outside the tube, increases the heat exchange area, accelerates the heat dissipation of the gas in the balance tube, and lowers the gas temperature in the tube. It has been tested that when the ambient temperature is 38 °C and the intake air temperature is 35 °C, the temperature of the heat balance tube to the air inlet is 5 °C lower than that of the ordinary balance tube.
- FIG. 3 is a view showing the configuration of a heat sink of a balance chamber of a natural gas compressor according to a second embodiment of the present invention.
- the heat dissipating device includes a heat exchange box 32 having a cooling medium guiding partition 33 and a heat exchange tube 31 located in the heat exchange box, wherein the inlet port of the heat exchange tube 31 is connected to the balance chamber, and the heat exchange The outlet port of the tube is connected to a predetermined inlet of the natural gas compressor to form a throughflow conduit.
- a plurality of cooling medium guiding partitions 33 are arranged side by side in a heat exchange tank to form an S-shaped cooling medium circulation passage, the inlet 32a of the cooling medium is close to the port 30b of the heat exchange tube, and the outlet 32b of the cooling medium is close to the heat exchange. Port 30a of the tube.
- the cooling medium and the gas in the heat exchange tube form a reverse heat exchange, and the temperature of the gas outlet port 30b of the heat exchange tube 31 can be lowered to substantially the same temperature as the cooling medium.
- the cooling medium in the heat exchange tank may be water, oil, or other cooling medium.
- the third embodiment uses the air cooler carried by the natural gas compressor itself to dissipate heat from the gas extracted from the balance chamber.
- the air cooler is used to cool the high-temperature gas generated during the compression process, that is, the gas discharged from the upper-stage cylinder is cooled and supplied to the next-stage gas rainbow, and the gas discharged from the final final-stage cylinder is performed. Cool down to prevent dangerous accidents such as explosions.
- the inlet port of the heat exchange tube is connected with the balance chamber, and the outlet port of the heat exchange tube is connected to a predetermined inlet port of the natural gas compressor to form a throughflow conduit.
- the predetermined intake port may be a primary air intake, or a secondary air intake, or an intake of other cylinders.
- heat sinks can be devised in accordance with the teachings of the present invention. Furthermore, when the gas flow area of the heat exchange tube or the heat pipe in the heat sink is increased, it helps to reduce the temperature rise of the gas inside the tube. Due to the friction and pressure ratio generated by the reciprocating motion of the airflow, the temperature of the gas in the existing balance chamber and the balance pipe is increased. When the intake port is introduced, the exhaust gas temperature is high, and the high intake air temperature directly leads to the intake of the natural gas compressor. It is seen that it is very beneficial to reduce the intake air temperature.
- the invention reduces the temperature of the gas entering the intake port of the natural gas compressor through the heat dissipating device communicating with the balance cavity, and on the other hand, suppresses the problem that the intake port is reduced due to the thermal expansion of the gas, and on the other hand, solves the problem.
- the conventional compressor has a problem that the intake air temperature is high due to the high temperature of the balance pipe gas.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
能改善进气状态的天然气压缩机
技术领域 本发明涉及压缩机领域， 尤其涉及一种进气状态得以改善的天然气压缩 机。 背景技术 天然气压缩机一般为多级多列结构， 而两列三级和两列四级最为常见， 并且往往将高压级和低压级组合在一列而形成级差式。 图 1 示出了现有的级差式两列四级天然气压缩机的结构示意图。 如图 1 所示， 曲轴 24上并列设有两个连杆 26 , 各连杆 26通过十字连接器 27与活 塞件 28、 29相连。 曲轴 24通过飞轮 23和联轴器 22连接至动力源 21。 其中， 活塞件 28的两侧形成一级气虹 11和四级气虹 14 , 活塞件 29的 两侧形成二级气紅 12和三级气紅 13 , 其中， 一级气紅和四级气紅之间形成 平衡腔 16 , 二级气缸 12和三级气缸 13之间形成平衡腔 15。 级差式天然气压缩机需平衡活塞力， 活塞力的平衡是通过平衡管来实现 的。 平衡管将一列中两活塞之间的气体 （即平衡腔 15、 16 中的气体） 引至 一级吸气口或二级吸气口等， 对活塞力进行平衡， 如此， 降低了压缩机的综 合活塞力。 然而， 平衡管的引入导致压缩机吸气量减少、 进气状态恶化， 这一点亟 待解决。 发明内容 本发明目的在于提供一种改善天然气进气状态的天然气压缩机， 以解决 传统压缩机因平衡管气体温度高导致吸、 排气温度偏高， 降低压缩机的吸气 量等问题。 为此， 本发明提供了一种天然气压缩机， 包括在其平衡腔和预定吸气口 之间设置的散热装置，该散热装置具有连通平衡腔和预定吸气口的通流管道。
进一步地， 上述散热装置为散热平衡管， 其包括形成通流管道的管体和 在管体内壁上形成的增加气体传热效果的槽和在管体外壁上形成的散热翅 片。 更进一步地， 上述槽为螺旋槽。 进一步地， 上述散热装置包括： 具有冷却介质的换热箱和位于换热箱中 的形成通流管道的换热管。 进一步地， 上述换热箱内具有多个并列交错排列的冷却介质导向隔板， 这些冷却介质隔板在所述换热箱内形成 S形冷却介质流通通道。 进一步地， 上述换热箱上的冷却介质的出口靠近换热管的接近平衡腔的 一侧，上述换热箱上的冷却介质的进口靠近换热管的接近预定进气口的一侧。 进一步地， 上述换热管为 S形管。 进一步地， 上述散热装置为风冷器， 该风冷器中增设一换热管， 该换热 管中形成通流管道。 本发明通过与平衡腔连通的散热装置， 降低了进入天然气压缩机吸气口 的气体的温度， 一方面抑制了吸气口因气体受热膨胀造成的吸气量减少的问 题， 另一方面解决了传统压缩机因平衡管气体温度高导致吸、 排气温度偏高 的问题。 除了上面所描述的目的、 特征、 和优点之外， 本发明具有的其它目的、 特征、 和优点， 将结合附图作进一步详细的说明。 附图说明 构成本说明书的一部分、 用于进一步理解本发明的附图示出了本发明的 优选实施例， 并与说明书一起用来说明本发明的原理。 图中： 图 1示出了现有的天然气压缩机的结构示意图； 图 2示出了根据本发明第一实施例的与天然气压缩机的平衡腔相连的散 热装置的结构示意图； 以及 图 3示出了根据本发明第二实施例的与天然气压缩机的平衡腔相连的散 热装置的结构示意图。
具体实施方式 以下结合附图对本发明的实施例进行详细说明， 但是本发明可以由权利 要求限定和覆盖的多种不同方式实施。 第一实施例 图 2示出了根据本发明第一实施例的与天然气压缩机的平衡腔相连的散 热装置的结构示意图。 如图 2所示， 天然气压缩机的活塞件 28 的一侧形成 一级气紅 11 , 另一侧形成四级气紅 14 ,一级气紅 11和四级气紅 14之间形成 平衡腔 16。 平衡腔 16与散热装置 30连接， 该散热装置构造成散热平衡管 30, 该散热平衡管 30包括形成通流管道的管体 31、 在管体外壁设置的散热 片 31a和在管体内腔设置的螺旋槽 31b。 管体 31的进气端口 30a与平衡腔 16连接， 管体 31的出气端口 30b与 天然气压缩机的预定吸气口 10a连接。 管内螺旋槽 31b的设计可使管内气体产生紊流。散热片 31a和螺旋槽 31b 的结合增大了管内和管外的换热系数， 加大了换热面积， 使平衡管内气体温 度散热加快， 降低了管内的气体温度。 经试验， 在环境温度为 38 °C , 进气温 度为 35 °C时， 散热平衡管引至进气口的温度比普通平衡管低 5 °C。 可以理解， 螺旋槽 31b也可以由其它形式的槽例如若千直槽来代替， 以 增加管内的换热系数。 第二实施例 图 3示出了根据本发明第二实施例的天然气压缩机的平衡腔的散热装置 的结构示意图。 如图 3所示， 散热装置包括具有冷却介质导向隔板 33 的换 热箱 32和位于换热箱中的换热管 31 , 其中， 换热管 31的进气端口连接至平 衡腔，换热管的出气端口连接至天然气压缩机的预定进气口，构成通流管道。 优选地， 多个冷却介质导向隔板 33 在换热箱中并列交错排列， 形成 S 形冷却介质流通通道， 其冷却介质的进口 32a靠近换热管的端口 30b , 冷却 介质的出口 32b靠近换热管的端口 30a。 如此， 冷却介质和换热管内的气体形成逆向换热， 换热管 31 的出气口 30b的温度可以降低至与冷却介质基本相同的温度。
换热箱中的冷却介质可以是水， 也可以是油， 或者其他的冷却介质。 第三实施例 利用天然气压缩机本身携带的风冷器对平衡腔引出的气体进行散热。 风冷器是用于将压缩过程中所产生的高温气体进行冷却， 即将上一级气 缸内排出的气体经过冷却后提供给下一级气虹， 并且将最后最终一级汽缸内 排出的气体进行冷却， 防止爆炸等危险事故的发生。 通过在风冷器内增设换热管， 使换热管的进气端口与平衡腔连接， 换热 管的出气端口连接至与天然气压缩机的预定进气口， 构成通流管道。 该预定 进气口可能是一级气虹的进气口， 也可能是二级气虹的进气口， 或者其他级 气缸的进气口。 可以理解， 根据本发明的技术教导， 还可以设计出其他类型或结构的散 热装置。 更进一步地， 当增加散热装置内的换热管或散热管的气体流通面积 时， 有助于降低管内气体温度升高幅度。 由于气流往复运动会产生摩擦及压力比， 导致现有平衡腔、 平衡管内气 体温度升高， 引入吸气口后， 导致排气温度偏高， 进气温度偏高则直接导致 天然气压缩机吸气量减小， 由此可见， 降低进气温度是非常有益的。 本发明通过与平衡腔连通的散热装置， 降低了进入天然气压缩机吸气口 的气体的温度， 一方面抑制了吸气口因气体受热膨胀造成的吸气量减少的问 题， 另一方面解决了传统压缩机因平衡管气体温度高导致吸气、 排气温度偏 高的问题。 以上仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域 的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和原则 之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围 之内。
Claims
1. 一种天然气压缩机， 其特征在于， 包括在其平衡腔和预定吸气口之间设 置的散热装置， 所述散热装置具有连通所述平衡腔和预定吸气口的通流 管道。
2. 根据权利要求 1所述的天然气压缩机， 其特征在于， 所述散热装置为散 热平衡管， 其包括形成通流管道的管体、 在所述管体内壁上形成的增加 气体传热效果的槽和在所述管体外壁上形成的散热翅片。
3. 根据权利要求 2所述的天然气压缩机， 其特征在于， 所述槽为螺旋槽。
4. 居权利要求 1所述的天然气压缩机， 其特征在于， 所述散热装置包括 具有冷却介质的换热箱和位于所述换热箱中形成所述通流管道的换热 管。
5. 居权利要求 4所述的天然气压缩机， 其特征在于， 所述换热箱内具有 多个并列交错排列的冷却介质导向隔板， 所述多个冷却介质导向隔板在 所述换热箱内形成 S形冷却介质流通通道。
6. 根据权利要求 5所述的天然气压缩机， 其特征在于， 所述换热箱上的冷 却介质的出口靠近所述换热管的接近所述平衡腔的一侧， 所述换热箱上 的冷却介质的进口靠近所述换热管的接近所述预定进气口的一侧。
7. 根据权利要求 4所述的天然气压缩机， 其特征在于， 所述换热管为 S形 管。
8. 根据权利要求 1所述的天然气压缩机， 其特征在于， 所述散热装置为风 冷器， 所述风冷器中增设有一换热管， 所述换热管中形成所述通流管道。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010093518A1 (en) | 2009-02-12 | 2010-08-19 | The Gillette Company | Lithium cell with iron disulfide cathode |
| WO2010111103A1 (en) | 2009-03-27 | 2010-09-30 | The Gillette Company | Lithium cell with improved iron disulfide cathode |
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| US4705460A (en) * | 1985-02-26 | 1987-11-10 | Anton Braun | Bounce chambers for multi-cylinder linear engine compressors |
| CN2202804Y (zh) * | 1994-01-26 | 1995-07-05 | 陈永江 | 一种氮氢气压缩机 |
| WO2002040867A1 (de) * | 2000-11-18 | 2002-05-23 | Continental Ag | Ein- oder mehrstufiger kolbenverdichter und verfahren zur kühlung eines elektrischen motors für einen ein- oder mehrstufigen kolbenverdichter |
| CN201059251Y (zh) * | 2007-05-14 | 2008-05-14 | 陈永江 | 一种高压氮氢气压缩机 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010093518A1 (en) | 2009-02-12 | 2010-08-19 | The Gillette Company | Lithium cell with iron disulfide cathode |
| WO2010111103A1 (en) | 2009-03-27 | 2010-09-30 | The Gillette Company | Lithium cell with improved iron disulfide cathode |
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