CN115468111A - 一种新型lng/l-cng加气站柱塞泵撬 - Google Patents
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- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
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- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
本发明提供一种新型LNG/L‑CNG加气站柱塞泵撬,包括:缓冲罐和柱塞泵;所述缓冲罐前侧的上部通过柱塞泵泵头回气管与所述柱塞泵连接;两个所述柱塞泵泵头回气管在与所述缓冲罐连接处的变径处,设置连通管,所述连通管将两个所述柱塞泵泵头回气管连接,所述连通管中间位置设置连通回气管;所述缓冲罐上端的放散管通过两个分支管汇成总管连接至加气站储罐放散管上。本发明改善了气液两相流中气相流动的通畅、快捷;同时进一步地将缓冲罐上原本单独的放散管,集结在一起连接至加气站储罐的放散管上,使得加气站在运营过程中,系统内部的气体压力、连通等方面更加一体化,彻底解决了空载的技术难题。
Description
技术领域
本发明涉及液化气储运设备技术领域,尤其涉及一种LNG/L-CNG加气站柱塞泵撬。
背景技术
图1是当前现有技术中的柱塞泵撬。柱塞泵又称为高压往复泵、往复泵,其在L-CNG加气站中的工艺流程是将LNG通过高压泵加压,将压力升至CNG所需要的压力,然后高压的LNG送至高压汽化器气化,这样便可产生高压的气态天然气,和使用天然气压缩机所得到的压力一样,但使用LNG高压泵,设备的造价、使用的费用和能耗都大大低于天然气压缩机。在国外,许多站都设有高压泵和潜液泵,这样在同一个加气站中,即可以加注使用LNG作为燃料的汽车,也可以加注使用CNG为燃料的汽车。
在LNG加气站中,虽然LNG储罐和运输设备都采用低温绝热结构,但存运设备与外界环境仍不可避免地存在热量交换,加上LNG具有低温性、易蒸发气等特点,在储存运输设备中难免会产生蒸发气体。此外在加气站的运行工艺流程中,特别是LNG卸车和加气过程,系统结构也跟环境存在接触,这会使的整体系统中的多个设备产生BOG,目前现有技术中单独处理,既不环保也不安全。同时,在LNG的加气过程中,会存在气液两相流通过柱塞泵,从而造成输送流量不稳定,空载现象严重。
发明内容
本发明的目的在于针对上述存在的问题,提供一种使用安全、实现进液/回气一体化,解决空载问题和集中放散的新型LNG/L-CNG加气站柱塞泵撬。
一种新型LNG/L-CNG加气站柱塞泵撬,包括:缓冲罐1和柱塞泵2;所述缓冲罐1通过下方设置的出液管4与所述柱塞泵2连接;进液管3和缓冲罐回气管5分别在所述缓冲罐1的中部、上部将两个所述缓冲罐1连接;所述缓冲罐1前侧的上部通过柱塞泵泵头回气管3与所述柱塞泵2连接;其特征在于:两个所述柱塞泵泵头回气管3在与所述缓冲罐1连接处的变径处,设置连通管7,所述连通管7将两个所述柱塞泵泵头回气管3连接,所述连通管7中间位置设置连通回气管8;所述缓冲罐1上端的放散管通过两个分支管汇成总管连接至加气站储罐放散管上。
进一步地,所述连通管7上以所述连通回气管8为中心左右对称设置截止阀9。
进一步地,所述连通管7与所述柱塞泵泵头回气管3焊接连接。
进一步地,所述连通管7和所述连通回气管8为Φ45不锈钢裸管。
进一步地,所述截止阀9为DN25长轴截止阀。
进一步地,所述缓冲罐1上端的放散管的两个分支管为Φ20不锈钢裸管。
有益效果:
本发明解决了现有技术中柱塞泵撬在运营过程中的空载问题,通过创造性地在柱塞泵泵头回气管上设置连通管,并将其连接至储罐的回气管上,改善了气液两相流中气相流动的通畅、快捷;同时进一步地将缓冲罐上原本单独的放散管,集结在一起连接至加气站储罐的放散管上,使得加气站在运营过程中,系统内部的气体压力、连通等方面更加一体化,彻底解决了空载的技术难题。
附图说明
图1为现有技术中的柱塞泵撬;
图2为现有技术中的柱塞泵撬的示意图(前视图);
图3为本发明针对现有技术中的柱塞泵撬的优化改造示意图(前视图);
图4为本发明针对现有技术中的柱塞泵撬的优化改造示意图(侧视图)。
具体实施方式
为更加清楚理解本发明的目的、技术方案和技术效果,下面对本发明做进一步说明。以图1中缓冲罐1和柱塞泵2的位置所示,缓冲罐1在图1的右侧,柱塞泵2在图1的左侧,但本领域技术人员可以确定,本发明中涉及到的“左”、“右”、“前”、“后”、“下”等位置标示,并不会将本发明的保护范围仅仅限定在以下实施例当中,也不会导致本领域技术人员在技术理解层面的边界不清。
如图1-2所示,一种LNG/L-CNG加气站柱塞泵撬,包括:缓冲罐1和柱塞泵2;所述缓冲罐1通过下方设置的出液管4与所述柱塞泵2连接;进液管3和缓冲罐回气管5分别在所述缓冲罐1的中部、上部将两个所述缓冲罐1连接;所述缓冲罐1前侧(面向所述柱塞泵2的一侧)的上部通过柱塞泵泵头回气管3与所述柱塞泵2连接。
本发明在现有技术的一种LNG/L-CNG加气站柱塞泵撬的基础上进行优化改造,获得一种新型LNG/L-CNG加气站柱塞泵撬,如图3-4所示,两个所述柱塞泵泵头回气管3在与所述缓冲罐1连接处的变径处,设置连通管7,所述连通管7将两个所述柱塞泵泵头回气管3连接,所述连通管7中间位置设置连通回气管8,所述连通回气管8与所述回气管6均指向所述缓冲罐1的后侧(背离所述柱塞泵2的一侧);所述连通管7上以所述连通回气管8为中心左右对称设置截止阀9;所述缓冲罐1上端的放散管(未图示)通过两个分支管汇成总管连接至加气站储罐放散管上。
优选的,所述连通管7与所述柱塞泵泵头回气管3焊接连接,所述连通管7和所述连通回气管8为Φ45不锈钢裸管,所述截止阀9为DN25长轴截止阀。
优选的,所述缓冲罐1上端的放散管的两个分支管为Φ20不锈钢裸管。
上述实施例仅针对本发明可行实施方式的具体说明,并非用以限定本发明的专利保护范围,只要涉及到了本发明的核心发明构思和实现发明构思的技术手段其中之一都属于本专利保护的对象。
Claims (6)
1.一种新型LNG/L-CNG加气站柱塞泵撬,包括:缓冲罐和柱塞泵;所述缓冲罐通过下方设置的出液管与所述柱塞泵连接;进液管和缓冲罐回气管分别在所述缓冲罐的中部、上部将两个所述缓冲罐连接;所述缓冲罐前侧的上部通过柱塞泵泵头回气管与所述柱塞泵连接;其特征在于:两个所述柱塞泵泵头回气管在与所述缓冲罐连接处的变径处,设置连通管,所述连通管将两个所述柱塞泵泵头回气管连接,所述连通管中间位置设置连通回气管;所述缓冲罐上端的放散管通过两个分支管汇成总管连接至加气站储罐放散管上。
2.如权利要求1所述的一种新型LNG/L-CNG加气站柱塞泵撬,其特征在于:所述连通管上以所述连通回气管为中心左右对称设置截止阀。
3.如权利要求1所述的一种新型LNG/L-CNG加气站柱塞泵撬,其特征在于:所述连通管与所述柱塞泵泵头回气管焊接连接。
4.如权利要求1所述的一种新型LNG/L-CNG加气站柱塞泵撬,其特征在于:所述连通管和所述连通回气管为Φ45不锈钢裸管。
5.如权利要求1所述的一种新型LNG/L-CNG加气站柱塞泵撬,其特征在于:所述截止阀为DN25长轴截止阀。
6.如权利要求1所述的一种新型LNG/L-CNG加气站柱塞泵撬,其特征在于:所述缓冲罐上端的放散管的两个分支管为Φ20不锈钢裸管。
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