WO2020034596A1 - 一种减压系统的热力平衡系统 - Google Patents

一种减压系统的热力平衡系统 Download PDF

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WO2020034596A1
WO2020034596A1 PCT/CN2019/073312 CN2019073312W WO2020034596A1 WO 2020034596 A1 WO2020034596 A1 WO 2020034596A1 CN 2019073312 W CN2019073312 W CN 2019073312W WO 2020034596 A1 WO2020034596 A1 WO 2020034596A1
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thermal balance
main process
module
medium
unit
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PCT/CN2019/073312
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English (en)
French (fr)
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王建强
杜大喜
郑晓东
孙志强
韩旭
高阳
李姜楠
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北京航天动力研究所
北京航天石化技术装备工程有限公司
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Publication of WO2020034596A1 publication Critical patent/WO2020034596A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F17D1/06—Pipe-line systems for gases or vapours for steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations

Definitions

  • the invention belongs to the technical field of coal chemical and petrochemical equipment, and particularly relates to a thermal balance system of a pressure reducing system.
  • the feed is a mixture of heavy oil (coal tar, atmospheric residue, vacuum residue, catalytic slurry, fuel oil, etc.) and additives, or heavy oil Mixtures with pulverized coal (oil-coal slurry).
  • the high-to-low thermal pressure reducing valve group is under high temperature, high pressure differential, and high solid content conditions. It is extremely vulnerable to erosion and damage. There are different degrees of damage. For wear problems, switching overhaul is required for a few hours and a few months at the most, which is difficult to operate, high overhaul costs, large safety risks, and difficult to run smoothly.
  • the industry proposes a multi-way main process pipeline combination scheme with a decompression function, thereby extending the overall service life of the decompression system.
  • the decompression system is used under the severe working conditions of high temperature of 300 ⁇ 600 °C and pressure of 10 ⁇ 30MPa.
  • an additional protection system needs to be added.
  • the pressure balance between the pipelines needs to be controlled so as to avoid the acceleration loss of key equipment.
  • warm-up and hot standby are needed to avoid direct damage to the pipeline or equipment caused by high-temperature media.
  • the purpose of the present invention is to provide a thermal balance system of a pressure reduction system to ensure the normal operation of the pressure reduction system.
  • the pressure reduction system includes a main process module.
  • the main process module includes multiple main process pipelines.
  • the main process pipeline is provided with a pressure reducing valve group, and the thermodynamic balance is provided.
  • the system contains thermal balance module 1 and thermal balance module 2:
  • the thermal balance module 1 is configured to perform at least one of the following actions: inject a thermal balance medium into a pipeline in the main process pipeline, and recover the thermal balance medium from the main process pipeline to the thermal balance module 1 Perform processing, and directly discharge the thermal equilibrium medium from the main process pipeline;
  • the thermal balance module 2 is configured to perform at least one of the following actions: inject a thermal balance medium into a valve in the main process pipeline, and recover the thermal balance medium from the main process pipeline to the thermal balance module 1 for processing.
  • the thermal equilibrium medium is directly discharged from the main process pipeline.
  • the thermal balance module 1 and the thermal balance module 2 respectively include a storage unit, a switching unit, a heating unit, a cooling unit, and a conveying unit
  • the storage unit is configured to store the thermal balance to be output or recovered.
  • the heating unit is used to heat the thermal balance medium
  • the cooling unit is used to cool the thermal balance medium
  • the work unit is used to improve the thermal balance flowing out of the storage unit
  • the pressure of the medium is conveyed downstream
  • the switching unit is configured to deliver the thermally balanced medium conveyed by the conveying unit to the heating unit and / or the cooling unit to output the heated and / or cooled medium.
  • the functional unit forms in the thermal balance module 1 and the thermal balance module 2 are one of the following two types:
  • the common function unit and each function unit are independent of each other.
  • the switching unit includes a parallel cooling pipeline and a heating pipeline, the cooling unit is disposed on the cooling pipeline, the heating unit is disposed on the heating pipeline, and the switching One end of the unit is connected to the conveying unit, and the other end is an outlet of the thermal balance medium.
  • the switching unit includes a parallel cooling pipeline and a direct output pipeline, the cooling unit is disposed on the cooling pipeline, the heating unit is disposed in the storage unit, and the One end of the switching unit is connected to the conveying unit, and the other end is an outlet of the heat balance medium.
  • the thermal balance module 1 includes a plurality of pipe systems N.
  • a first end of the plurality of pipe systems N is connected to the thermal balance medium outlet, and a second end of the plurality of pipe systems N is respectively connected to the multi-channel mains.
  • the pipelines on the process pipeline are one-to-one corresponding and connected, and a pressure gauge is provided near the connection point of the pipeline system N and the corresponding pipeline.
  • the thermal balance module 2 includes a plurality of piping systems L, a first end of the plurality of piping systems L is connected to the thermal balance medium outlet, and a second end is respectively connected to the multi-channel main
  • the valves on the process lines are one-to-one and connected.
  • thermal balance medium is at least one of oil, steam, inert gas, or water.
  • oil with a constant temperature or a continuously changing temperature is provided as a thermal balance medium to the main process module;
  • one of the following three types of thermal equilibrium medium is provided to the main process module: constant temperature or one of two states where the temperature continuously changes, constant oil Temperature steam or constant temperature inert gas;
  • a constant temperature inert gas is provided as a thermal balance medium to the main process module, and a set time is maintained in the main process module to cooperate with The pressure gauge is tested.
  • the thermal balance system of the present invention is suitable for a decompression system under high temperature and high pressure conditions, which can guarantee various functions of the decompression system and prolong the overall service life of the decompression system.
  • the thermal balance system of the present invention has good integration, high degree of automation, good safety, and strong maintainability.
  • FIG. 1 is a schematic diagram of an embodiment of a decompression system
  • FIG. 2 is a schematic diagram of a functional module of a decompression system
  • FIG. 3 is a schematic diagram (part of a temperature control device) of a thermal balance system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram (part of a temperature control device) of another thermal balance system according to an embodiment of the present invention.
  • thermal balance module 1 thermal balance module 1
  • B thermal balance module 2
  • C valves of the main process pipeline
  • D pipelines of the main process pipeline
  • E intelligent control system
  • 1 main process line entrance
  • 2 1.
  • Thermal balance system 9 Mechanical control system 31. Connected pipeline I; 32. Connected pipeline II; 33. Connected pipeline III; 34. Connected pipeline IV; 35. Connected pipeline V; 36. Connected pipeline VI; 81.
  • a thermal balance system of a pressure reducing system is used in high-temperature and high-pressure working conditions, and includes a main process module, a mechanical control system, a thermal balance system, and an intelligent control system. ;
  • the process medium enters the main process module.
  • the mechanical control system outputs torque, and the valves of the main process module perform action switching and opening degree adjustment, so as to reduce the pressure of the process medium and then flow out from the pressure reduction system;
  • the main process module of the pressure reducing system adopts two to seven main process pipelines including a pressure reducing valve group, and each main process pipeline is completely the same, including a pressure reducing regulating valve as the core, front and rear shut-off valves or switching valves as auxiliary Pressure reducing valve group, each valve in the pressure reducing valve group includes an automatic valve, and also includes a manual valve as required;
  • the main process module of the pressure reducing system shown in FIG. 1 uses two main process pipelines including a pressure reducing valve group, and the two paths are completely the same, which can realize one channel operation, one channel standby, or two channels running simultaneously.
  • the main process pipeline includes a connection pipeline I (31), an upstream first shut-off valve (2), a connection pipeline II (32), an upstream second shut-off valve (3), and a connection pipeline III in this order. (33), pressure reducing valve (4), connecting pipeline IV (34), downstream second shut-off valve (5), connecting pipeline V (35), downstream first shut-off valve (6), connecting pipeline VI (36 ).
  • the mechanical control system (9) is respectively connected with the first upstream shut-off valve (2), the second upstream shut-off valve (3), the pressure reducing valve (4), and the second downstream shut-off valve of this channel. (5) and the first downstream shut-off valve (6) are connected.
  • the mechanical control system (9) provides the torque required for various automatic valve actions, and acts according to the instructions of the intelligent control system to control the opening or closing of each valve.
  • the thermal balance system provides different temperatures, pressures, and types of media to the main process pipeline of the decompression system according to the instructions of the intelligent control system to achieve the functions of temperature control, pressure control, cleaning, and seal detection in the decompression system;
  • the thermal balance system includes a thermal balance module 1 and a thermal balance module 2;
  • the thermal balance module 1 is used to perform at least one of the following actions: inject a thermal balance medium into a pipeline in the main process module, recover the thermal balance medium from the main process module to the thermal balance module 1 for processing, and directly discharge heat from the main process module Balanced medium
  • the thermal balance module 2 is used to perform at least one of the following actions: inject a thermal balance medium into a valve in the main process module, recover the thermal balance medium from the main process module to the thermal balance module 1 for processing, and discharge heat directly from the main process module Balanced medium
  • the thermal balance module 1 and the thermal balance module 2 each include at least one functional unit among a storage unit, a switching unit, a heating unit, a cooling unit, and a conveying unit;
  • the functional units in the thermal balance module 1 and the thermal balance module 2 are in one of the following two forms:
  • the common function units are independent of each other;
  • the storage unit is a storage tank
  • the switching unit is a pipeline including multiple valves
  • the heating unit is one of an electric heater and a heat exchanger that heats liquids; when the heating unit is a heat exchanger, it is one of an air heat exchanger, a steam heat exchanger, and a circulating water heat exchanger;
  • the cooling unit is a heat exchanger for liquid cooling; the heat exchanger as the cooling unit is one of an air cooler and a circulating water cooler;
  • the conveying unit is a pump set and front and rear connecting pipelines
  • the pipe system N1, pipe system N2, pipe system N3, and pipe system N4 of the thermal balance module 1 respectively inject or recover the thermal balance medium into the pipelines of each main process pipeline of the main process module;
  • connection point I81 a connection point II82, a connection point III83, and a connection point IV84 respectively with the main process pipeline in the main process module;
  • connection point I81, connection point II82, connection point III83, and connection point IV84 are connected to the thermal balance medium inlet or outlet of the thermal balance module 1;
  • Pressure gauges are respectively arranged near the connection point I81, connection point II82, connection point III83, and connection point IV84;
  • Pipeline L1, pipeline L2, pipeline L3, pipeline L4, and pipeline L5 of the thermal balance module 2 respectively inject a thermal balance medium into each main process line valve of the main process module;
  • the thermal balance medium is one of oil, steam, nitrogen and water;
  • the thermal balance system provides oil with constant temperature and continuous temperature change as the thermal balance medium to the main process module; then Perform one of the following actions: hold the set time in the main process module, recover to the thermal balance module 1 for processing, and directly discharge from the main process pipeline in the main process module;
  • the thermal balance system provides one of the following three thermal balance media to the main process module: constant temperature, one of two states of continuous temperature change; oil with constant temperature; Nitrogen at a constant temperature; then perform one of the following actions: maintain the set time in the main process module, recover to the thermal balance module 1 for processing, and discharge directly from the main process pipeline in the main process module;
  • the thermal balance system When the main process module performs a seal test, the thermal balance system provides nitrogen at a constant temperature as a thermal balance medium to the main process module according to the requirements of the intelligent control system, and maintains the set time in the main process module for detection with a pressure gauge.
  • the leak detection of the main process pipeline can be performed first to determine the leakage status and faults of the valves on all main process pipelines. degree.
  • This solution can use either a low-pressure thermal balance system or a high-pressure thermal balance system, which has more options and flexibility from the perspective of the solution. If a low-pressure thermal balance system is used, the cost will be greatly reduced.
  • any two access points can be the entrances and exits to each other, that is, they can flow from upstream to downstream, or they can flow from downstream to upstream, reducing the dead angle of flow.
  • the thermal balancing module 1 and the thermal balancing module 2 share all other functional units except the connection pipe system.
  • the storage unit is a storage tank 12 and the switching unit includes The minimum return valve 14, valve I15, valve II17, valve III19, valve IV20, and valve V21 and other valves, the heating unit is the heater 18, the cooling unit is the cooler 16, and the delivery unit is the pump group 13;
  • connection point I, connection point II, connection point III or connection point IV is connected to the thermal balance medium inlet 11 or the thermal balance medium outlet 22 in the thermal balance system;
  • the medium enters the storage tank 12 from the thermal equilibrium medium inlet 11 and the medium output from the storage tank 12 is pumped to the minimum return valve 14 through the pump unit 13 to increase the pressure, and then transported or returned downstream according to the required flow of the main process module Into storage tank 12;
  • the medium in the storage tank 12 When the temperature of the medium in the storage tank 12 is too low, the medium is transported downstream, passes through the valve II17 and the heater 18 to a certain temperature, flows through the valve III19 and the valve V21, and finally supplies the main process through the thermally balanced medium outlet 22 Module
  • the medium in the storage tank 12 When the temperature of the medium in the storage tank 12 is too high, the medium is transported downstream, passes through the valve I15, and is cooled to a certain temperature by the cooler 16, and then flows through the valve IV20 and valve V21, and finally is supplied to the main process module through the thermally balanced medium outlet 22. ;
  • the function unit realizes corresponding functions under the instruction of the intelligent control system.
  • the thermal balance medium flows in the main process pipeline of the decompression system, and realizes temperature control such as heating, holding, and cooling of the main process module of the decompression system.

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Abstract

一种减压系统的热力平衡系统，属于煤化工与石油化工设备技术领域。该热力平衡系统包含热力平衡模块1和热力平衡模块2：热力平衡模块1可以用于向主工艺管线中的管道注入热力平衡介质；热力平衡模块2可以用于向主工艺管线中的阀门注入热力平衡介质。该热力平衡系统适用于高温高压工况下的减压系统，可保障减压系统的各种功能，延长减压系统整体使用寿命。

Description

一种减压系统的热力平衡系统
本申请要求于2018年08月16日提交中国专利局的申请号为201810934675.1、发明名称为“一种减压系统的热力平衡系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明属于煤化工与石油化工设备技术领域，具体涉及一种减压系统的热力平衡系统。
背景技术
对于目前在建或已经运行的非固定床加氢装置，由于其进料为重油(煤焦油、常压渣油、减压渣油、催化油浆、燃料油等)与添加剂的混合物，或重油与煤粉的混合物(油煤浆)，其热高分至热低分的减压阀组为高温、高压差、高含固的工况，极易遭受冲刷磨蚀而损坏，均存在不同程度的磨损问题，最短几个小时最长几个月就需要进行切换检修，操作难度大，检修成本高、安全隐患大、以及平稳运行难。
因此，业内提出具备减压功能的多路主工艺管线组合方案，从而延长减压系统的整体使用寿命。减压系统用于300～600℃高温及10～30MPa压力的恶劣工况下，为了保证减压系统多路管线间的安全可靠及平稳运行，需要增加额外的保障系统。比如，在管线切换时，需要控制各段管线间的压力平衡，从而避免关键设备的加速损耗。在管线投用前需要进行升温热备，避免高温介质直接进入管线引起管道或设备损坏；在投用后，为了便于快速检修，又需要进行合理速率的降温，以节省检修时间；同时还要进行快速彻底的清洁，避免管线结焦、堵塞，影响下次使用。
因此，亟需设计一套合理的热力平衡系统来保证减压系统的正常运行。
发明内容
本发明的目的在于提供一种减压系统的热力平衡系统，以保证减压系统的正常运行。
本发明的技术方案如下：
一种减压系统的热力平衡系统，所述的减压系统包括主工艺模块，所述主工艺模块包括多路主工艺管线，所述主工艺管线上设有减压阀组，所述热力平衡系统包含热力平衡模块1和热力平衡模块2：
所述热力平衡模块1用于执行如下动作中的至少一种：向所述主工艺管线中的管道注入热力平衡介质、从所述主工艺管线回收所述热力平衡介质至所述热力平衡模块1进行处理、直接从所述主工艺管线排出所述热力平衡介质；
所述热力平衡模块2用于执行如下动作中的至少一种：向所述主工艺管线中的阀门注入热力平衡介质、从所述主工艺管线回收热力平衡介质至所述热力平衡模块1进行处理、直接从所述主工艺管线排出热力平衡介质。
在一可选实施例中，所述热力平衡模块1和热力平衡模块2分别包括存储单元、切换单元、加热单元、冷却单元和输送单元，所述存储单元用于存储待输出或回收的热力平衡介质，所述加热单元用于给所述热力平衡介质加热，所述冷却单元用于对所述热力平衡介质进行冷却，工作时，所述输送单元用于提高从所述存储单元流出的热力平衡介质的压力并输送至下游，所述切换单元用于将所述输送单元输送的热力平衡介质输送给所述加热单元和/或冷却单元以将所述热力平衡介质加热和/或冷却后输出。
在一可选实施例中，所述热力平衡模块1和热力平衡模块2中的功能单元形式为以下两种之一：
共用部分功能单元、各自的功能单元相互独立。
在一可选实施例中，所述切换单元包含并联的冷却管路和加热管路，所述冷却单元设置在所述冷却管路上，所述加热单元设置在所述加热管路上，所述切换单元一端与所述输送单元连接，另一端为热力平衡介质出口。
在一可选实施例中，所述切换单元包含并联的冷却管路和直接输出管路，所述冷却单元设置在所述冷却管路上，所述加热单元设置在所述存储单元内，所述切换单元一端与所述输送单元连接，另一端为热平衡介质出口。
在一可选实施例中，所述热力平衡模块1包括多条管系N，所述多条管系N第一端与所述热力平衡介质出口连接，第二端分别与所述多路主工艺管线上的管道一一对应且连接，所述管系N与对应的管道的连接点附近设有压力表。
在一可选实施例中，所述热力平衡模块2包括多条管系L，所述多条管系L第一端与所述热力平衡介质出口连接，第二端分别与所述多路主工艺管线上的阀门一一对应且连接。
在一可选实施例中，根据系统需求选择不同温度、压力和种类的热力平衡介质，所述热力平衡介质为油品、蒸汽、惰性气体或水中的至少一种。
在一可选实施例中，当所述主工艺模块进行温度控制、压力控制中的一种控制时，提供恒定温度或温度连续变化的油品作为热力平衡介质至所述主工艺模块；
然后执行如下动作之一：在所述主工艺模块中保持设定时间、回收至所述热力平衡模块1进行处理或直接从所述主工艺模块中的主工艺管线排出。
在一可选实施例中，当所述主工艺模块进行清洁时，提供下述三种热力平衡介质之一至所述主工艺模块：恒定温度或温度连续变化两种状态之一的油品，恒定温度的蒸汽或恒定温度的惰性气体；
然后执行如下动作之一：在所述主工艺模块中保持设定时间、回收至所述热力平衡模块1进行处理、直接从所述主工艺模块中的主工艺管线排出。
在一可选实施例中，当所述主工艺模块进行密封检测时，提供恒定温度的惰性气体作为热力平衡介质至所述主工艺模块，并在所述主工艺模块中保持设定时间，配合压力表进行检测。
本发明的显著效果在于：
(1)本发明热力平衡系统适用于高温高压工况下的减压系统，可保障减压系统的各种功能，延长减压系统整体使用寿命。
(2)本发明热力平衡系统集成性好、自动化程度高、安全性好、可维护性强。
(3)本发明热力平衡系统公用工程需求可就地取材，最大程度降低一次设备投入成本和二次能源消耗成本，经济适用性强。
附图说明
图1为一种减压系统的实施例示意图；
图2为一种减压系统的功能模块示意图；
图3为本发明实施例提供的热力平衡系统局部(温度控制设备)示意图；
图4为本发明实施例提供的另一热力平衡系统的局部(温度控制设备)示意图。
图中：A、热力平衡模块1；B、热力平衡模块2；C、主工艺管线的各阀门；D、主工艺管线的各管道；E、智能控制系统；1、；主工艺线入口；2、上游第一道切断阀；3、上游第二道切断阀；4、减压调节阀；5、下游第二道切断阀；6、下游第一道切断阀；7、主工艺线出口；8、热力平衡系统；9、机械控制系 统；31、连接管道I；32、连接管道II；33、连接管道III；34、连接管道IV；35、连接管道V；36、连接管道VI；81、连接点I；82、连接点II；83、连接点III；84、连接点IV、11、热力平衡介质入口；12、储罐；13、输送泵组；14、最小回流阀；15、阀门I；16、冷却器；17、阀门II；18、加热器；19、阀门III；20、阀门IV；21、阀门V；22、热力平衡介质出口；23、热力平衡介质入口；24、储罐；25、加热器；26、输送泵组；27、最小回流阀；28、阀门I、29、冷却器；30、阀门II。
具体实施方式
下面结合附图及具体实施例对本发明作进一步详细说明。
如图1和图2所示，本发明一种减压系统的热力平衡系统，所述的减压系统用于高温高压工况，包括主工艺模块、机械控制系统、热力平衡系统及智能控制系统；
工艺介质进入主工艺模块，在智能控制系统的指令下，机械控制系统输出力矩，主工艺模块的各阀门进行动作开关及开度调节，从而实现工艺介质的减压，之后从减压系统流出；
所述的减压系统主工艺模块采用两路至七路包含减压阀组的主工艺管线，每一路主工艺管线完全相同，包含以减压调节阀为核心、前后切断阀或切换阀为辅助的减压阀组，减压阀组中的各阀门包括自动阀门，根据需要还包括手动阀门；
如图1所示的减压系统主工艺模块，采用包含减压阀组的两路主工艺管线，两路完全相同，可实现一路运行、一路备用，或两路同时运行。
以一路为例，所述的主工艺管线依次包含连接管道I(31)、上游第一道切断阀(2)、连接管道II(32)、上游第二道切断阀(3)、连接管道III(33)、减 压阀(4)、连接管道IV(34)、下游第二道切断阀(5)、连接管道V(35)、下游第一道切断阀(6)、连接管道VI(36)。
以另一路为例，机械控制系统(9)分别与该路的上游第一道切断阀(2)、上游第二道切断阀(3)、减压阀(4)、下游第二道切断阀(5)以及下游第一道切断阀(6)相连接。机械控制系统(9)提供了各种自动阀门动作所需力矩，并根据智能控制系统指令进行动作，从而控制各阀门开关或开度调节。
热力平衡系统根据智能控制系统的指令，向减压系统主工艺管线提供不同温度、压力、种类的介质，实现减压系统内部的温度控制、压力控制、清洁、密封检测等功能；
所述的热力平衡系统包含热力平衡模块1和热力平衡模块2；
热力平衡模块1用于执行如下动作中的至少一种：向主工艺模块中的管道注入热力平衡介质、从主工艺模块回收热力平衡介质至热力平衡模块1进行处理、直接从主工艺模块排出热力平衡介质；
热力平衡模块2用于执行如下动作中的至少一种：向主工艺模块中的阀门注入热力平衡介质、从主工艺模块回收热力平衡介质至热力平衡模块1进行处理、直接从主工艺模块排出热力平衡介质；
热力平衡模块1和热力平衡模块2分别包括储存单元、切换单元、加热单元、冷却单元、输送单元中的至少一种功能单元；
包括储存单元、切换单元、加热单元、冷却单元、输送单元中的至少一种功能单元；
热力平衡模块1和热力平衡模块2中的功能单元形式为以下两种之一：
共用部分功能单元、各自的功能单元相互独立；
热力平衡模块1和热力平衡模块2中，所述的储存单元为储罐；
所述的切换单元为包含多个阀门的管线；
所述的加热单元为对液体加热的电加热器、换热器中的一种；加热单元为换热器时为空气换热器、蒸汽换热器、循环水换热器中的一种；
所述的冷却单元为对液体冷却的换热器；作为冷却单元的换热器为空气冷却器、循环水冷却器中的一种；
所述的输送单元为泵组及前后连接管线；
热力平衡模块1的管系N1、管系N2、管系N3、管系N4分别向主工艺模块的每一路主工艺管线的管道注入或回收热力平衡介质；
热力平衡模块1的管系N1、管系N2、管系N3、管系N4分别与主工艺模块中的主工艺管线形成连接点I81、连接点II82、连接点III83、连接点IV84；
所述的连接点I81、连接点II82、连接点III83、连接点IV84与热力平衡模块1的热力平衡介质入口或者出口相连；
在所述的连接点I81、连接点II82、连接点III83、连接点IV84附近分别设置压力表；
热力平衡模块2的管系L1、管系L2、管系L3、管系L4、管系L5分别向主工艺模块的每一路主工艺管线阀门注入热力平衡介质；
根据系统需求选择不同温度、压力和种类的热力平衡介质；热力平衡介质为油品、蒸汽、氮气、水中的一种；
当主工艺模块进行温度控制、压力控制中的一种控制时，热力平衡系统根据智能控制系统要求，提供恒定温度、温度连续变化两种状态之一的油品作为热力平衡介质至主工艺模块；然后执行如下动作之一：在主工艺模块中保持设定时间、回收至热力平衡模块1进行处理、直接从主工艺模块中的主工艺管线排出；
当主工艺模块进行清洁时，热力平衡系统根据智能控制系统要求，提供下述三种热力平衡介质之一至主工艺模块：恒定温度、温度连续变化两种状态之一的油品；恒定温度的蒸汽；恒定温度的氮气；然后执行如下动作之一：在主工艺模块中保持设定时间、回收至热力平衡模块1进行处理、直接从主工艺模块中的主工艺管线排出；
当主工艺模块进行密封检测时，热力平衡系统根据智能控制系统要求，提供恒定温度的氮气作为热力平衡介质至主工艺模块，并在主工艺模块中保持设定时间，配合压力表进行检测。
1)通过采用四个可选的接入点(如图81、82、83、84)并配合压力表，先进行主工艺管线的泄漏检测，可以判断所有主工艺管线上阀门的泄漏状态和故障程度。
2)本方案既可以采用低压热力平衡系统，也可以采用高压热力平衡系统，从方案来说具备更多的可选性和灵活性。如果采用低压热力平衡系统，造价会大幅降低。
3)任意两个接入点之间理论上都可以互为出入口，即可以从上游往下游流动，也可以从下游往上游流动，减少了流动死角。
在一具体实施例中，所述热力平衡模块1和热力平衡模块2中共用除连接管系外的其他全部功能单元，如图3所示，所述的储存单元为储罐12、切换单元包括最小回流阀14、阀门I15、阀门II17、阀门III19、阀门IV20和阀门V21等阀门，加热单元为加热器18，冷却单元为冷却器16、输送单元为泵组13；
所述的连接点I、连接点II、连接点III或连接点IV与热力平衡系统中的热力平衡介质入口11或者热力平衡介质出口22相连；
所述的介质从热力平衡介质入口11进入储罐12，从储罐12中输出的介质 经过泵组13提高压力输送至最小回流阀14处，进而根据主工艺模块需求流量大小往下游输送或回到储罐12中；
当储罐12中的介质温度过低时，介质输送至下游，依次通过阀门II17、经加热器18加热至一定温度后，流经阀门III19和阀门V21，最终通过热力平衡介质出口22供给主工艺模块；
当储罐12中介质温度过高时，介质输送至下游，依次通过阀门I15、经冷却器16冷却至一定温度后，流经阀门IV20和阀门V21，最终通过热力平衡介质出口22供给主工艺模块；
所述的功能单元在智能控制系统的指令下，实现相应功能。所述的热力平衡介质在减压系统的主工艺管线中流动，实现对减压系统主工艺模块进行升温、保温、降温等温度控制。
以上所述，仅为本发明一个具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。
本发明未详细说明部分属于本领域技术人员公知常识。

Claims (11)

  1. 一种减压系统的热力平衡系统，所述的减压系统包括主工艺模块，所述主工艺模块包括多路主工艺管线，所述主工艺管线上设有减压阀组，其特征在于，所述热力平衡系统包含热力平衡模块1和热力平衡模块2：
    所述热力平衡模块1用于执行如下动作中的至少一种：向所述主工艺管线中的管道注入热力平衡介质、从所述主工艺管线回收所述热力平衡介质至所述热力平衡模块1进行处理、直接从所述主工艺管线排出所述热力平衡介质；
    所述热力平衡模块2用于执行如下动作中的至少一种：向所述主工艺管线中的阀门注入热力平衡介质、从所述主工艺管线回收热力平衡介质至所述热力平衡模块1进行处理、直接从所述主工艺管线排出热力平衡介质。
  2. 如权利要求1所述的一种减压系统的热力平衡系统，其特征在于，所述热力平衡模块1和热力平衡模块2分别包括存储单元、切换单元、加热单元、冷却单元和输送单元，所述存储单元用于存储待输出或回收的热力平衡介质，所述加热单元用于给所述热力平衡介质加热，所述冷却单元用于对所述热力平衡介质进行冷却，工作时，所述输送单元用于提高从所述存储单元流出的热力平衡介质的压力并输送至下游，所述切换单元用于将所述输送单元输送的热力平衡介质输送给所述加热单元和/或冷却单元以将所述热力平衡介质加热和/或冷却后输出。
  3. 如权利要求2所述的一种减压系统的热力平衡系统，其特征在于，所述热力平衡模块1和热力平衡模块2中的功能单元形式为以下两种之一：
    共用部分功能单元、各自的功能单元相互独立。
  4. 如权利要求2所述的一种减压系统的热力平衡系统，其特征在于，所述切换单元包含并联的冷却管路和加热管路，所述冷却单元设置在所述冷却管路上，所述加热单元设置在所述加热管路上，所述切换单元一端与所述输送单元 连接，另一端为热力平衡介质出口。
  5. 如权利要求2所述的一种减压系统的热力平衡系统，其特征在于，所述切换单元包含并联的冷却管路和直接输出管路，所述冷却单元设置在所述冷却管路上，所述加热单元设置在所述存储单元内，所述切换单元一端与所述输送单元连接，另一端为热平衡介质出口。
  6. 如权利要求4或5所述的一种减压系统的热力平衡系统，其特征在于：
    所述热力平衡模块1包括多条管系N，所述多条管系N第一端与所述热力平衡介质出口连接，第二端分别与所述多路主工艺管线上的管道一一对应且连接，所述管系N与对应的管道的连接点附近设有压力表。
  7. 如权利要求4或5所述的一种减压系统的热力平衡系统，其特征在于：所述热力平衡模块2包括多条管系L，所述多条管系L第一端与所述热力平衡介质出口连接，第二端分别与所述多路主工艺管线上的阀门一一对应且连接。
  8. 如权利要求1～5所述的一种减压系统的热力平衡系统，其特征在于：根据系统需求选择不同温度、压力和种类的热力平衡介质，所述热力平衡介质为油品、蒸汽、惰性气体或水中的至少一种。
  9. 如权利要求1～5所述的一种减压系统的热力平衡系统，其特征在于：当所述主工艺模块进行温度控制、压力控制中的一种控制时，提供恒定温度或温度连续变化的油品作为热力平衡介质至所述主工艺模块；
    然后执行如下动作之一：在所述主工艺模块中保持设定时间、回收至所述热力平衡模块1进行处理或直接从所述主工艺模块中的主工艺管线排出。
  10. 如权利要求1～5所述的一种减压系统的热力平衡系统，其特征在于：当所述主工艺模块进行清洁时，提供下述三种热力平衡介质之一至所述主工艺模块：恒定温度或温度连续变化两种状态之一的油品，恒定温度的蒸汽或恒定温 度的惰性气体；
    然后执行如下动作之一：在所述主工艺模块中保持设定时间、回收至所述热力平衡模块1进行处理、直接从所述主工艺模块中的主工艺管线排出。
  11. 如权利要求1～5所述的一种减压系统的热力平衡系统，其特征在于：当所述主工艺模块进行密封检测时，提供恒定温度的惰性气体作为热力平衡介质至所述主工艺模块，并在所述主工艺模块中保持设定时间，配合压力表进行检测。
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