CN107289322B - Dimethyl ether storage and filling system for town gas - Google Patents

Dimethyl ether storage and filling system for town gas Download PDF

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Publication number
CN107289322B
CN107289322B CN201710708766.9A CN201710708766A CN107289322B CN 107289322 B CN107289322 B CN 107289322B CN 201710708766 A CN201710708766 A CN 201710708766A CN 107289322 B CN107289322 B CN 107289322B
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Prior art keywords
pipe
valve
storage tank
branch
filling
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CN107289322A (en
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卢洪军
何远
朱玓
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Sichuan Dongchen Gas Co Ltd
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Sichuan Dongchen Gas Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • 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
    • F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/037—Handling leaked fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion

Abstract

The invention discloses a dimethyl ether storage and filling system for town gas, and relates to the dimethyl ether storage and filling technology. According to the invention, through the matching arrangement of the high-pressure pump, the main sewage discharge pipe, the compressor and the like and the corresponding operation, after water is injected into the first storage tank or the second storage tank, the leakage of the root part stop valve I, the root part ball valve I or the root part stop valve II and the root part ball valve II is also water, so that the tank-reversing function can be realized, the time is strived for emergency treatment, and the explosive gas can be prevented from being formed in the first storage tank or the second storage tank. Simultaneously, the odorous liquid agent that the odorizing device produced is dripped into the liquid phase through the odorizing pipe and is advanced the pipe to odorize for liquid dimethyl ether, make it smelly, easily perceive when the dimethyl ether leaks. In addition, a manual reflux valve on the pressure relief pipe can be opened, and the liquid dimethyl ether in the filling pipe can flow into the reflux pipe through the pressure relief pipe, so that the pressure of the filling pipe can be reduced through the multi-pipeline reflux and decompression design, and the manual reflux valve can also prevent accidents caused by damage of the automatic safety valve.

Description

Dimethyl ether storage and filling system for town gas
Technical Field
The invention relates to the technical field of dimethyl ether storage and filling, in particular to the field of a dimethyl ether storage and filling system for town gas.
Background
At present, liquefied petroleum gas is most widely supplied to cities and towns in China, the liquefied petroleum gas is convenient to liquefy and store, the facilities are simple, the liquefied petroleum gas can be supplied in bottles and pipelines, and the liquefied petroleum gas is popular in various regions, so that the liquefied petroleum gas has wide markets in many middle and small towns and even rural areas. However, as the international price of crude oil increases, the price of liquefied petroleum gas also increases. Many village and town users cannot bear the economic burden, and are abandoned and abandoned in succession, and the forest area is reduced and the ecological balance is not facilitated by burning firewood. Therefore, the development of new gas sources for town gas is urgent.
The dimethyl ether for town gas is dimethyl ether (DME) which is supplied as gas in towns and used, and the gas quality of which conforms to the regulation of the existing national standard GB 25035 of dimethyl ether for town gas.
The dimethyl ether for town gas is a colorless, nontoxic, carcinogenic and small-corrosiveness product, has good combustion performance, high thermal efficiency, NO residue and NO black smoke in the combustion process, has low discharge of CO and NO, can be mixed with liquefied petroleum gas, coal gas or natural gas for combustion and can improve the heat, and can be directly used as a fuel for replacing liquefied gas when the content of the dimethyl ether is more than or equal to 95 percent. Therefore, it would be a desirable clean fuel to replace liquefied gas. Dimethyl ether can replace coal gas and liquefied petroleum gas for civil fuel. The vapor pressure of dimethyl ether at normal temperature is 0.5MPa, the saturated vapor pressure of dimethyl ether is lower than that of liquefied gas at the same temperature, the dimethyl ether is safer to store and transport than liquefied petroleum gas, if the dimethyl ether is used as fuel alone, the pressure grade of the dimethyl ether meets the requirements of the liquefied gas, the dimethyl ether can be collectively canned by using the existing liquefied gas tanks, and the stove can also be used with a liquefied gas stove. Dimethyl ether can be mixed into city gas or natural gas in a certain proportion for peak regulation, and can improve the quality of the gas and the heat value. At the same temperature, the saturated vapor pressure of the dimethyl ether is lower than that of the liquefied petroleum gas, so that the dimethyl ether is safer to store and transport than the liquefied petroleum gas; the explosion lower limit of the dimethyl ether in the air is twice higher than that of the liquefied petroleum gas, so that the dimethyl ether is safer than the liquefied petroleum gas in the using process; although the dimethyl ether has a lower heat value than liquefied gas, the dimethyl ether contains oxygen and requires far less air than the liquefied gas in the combustion process, so that the heat value of the dimethyl ether premixed gas and the theoretical combustion temperature are both higher than those of the liquefied petroleum gas.
In summary, both from the viewpoint of guaranteed supply and price containment of liquefied petroleum gas or natural gas and from the viewpoint of environmental protection, a new source of town gas is required for replenishment or regulation. The dimethyl ether for town gas has good performance, good quality and low cost, and can be used for supplementing the town gas.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
the dimethyl ether for town gas produced by the prior art is tasteless, and when leakage occurs, the dimethyl ether is not easy to be noticed, so that accidents are easily caused no matter the dimethyl ether is produced or used as the town gas;
the liquid dimethyl ether is stored in the dimethyl ether storage tank, the top space in the dimethyl ether storage tank is gaseous dimethyl ether, when a liquid phase valve at the bottom of the dimethyl ether storage tank is damaged to cause leakage of the liquid dimethyl ether, the liquid dimethyl ether in the dimethyl ether storage tank can be rapidly gasified, the volume can be expanded by 250-fold and 300-fold to form explosive gas, and at the moment, the dimethyl ether storage tank is dangerous, and the gas in the dimethyl ether storage tank which is leaked cannot be transferred in the prior art;
and (III) the filling device in the prior art has no perfect multi-pipeline backflow design, so that the excessive pressure of the filling pipe is easily caused, and the filling work is influenced.
Disclosure of Invention
The invention aims to solve the problems and provides a dimethyl ether storage and filling system for town gas.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dimethyl ether storage and filling system for town gas comprises a first storage tank, a second storage tank, a residual liquid tank, a gas phase pipe, a main liquid phase outlet pipe, a main liquid phase inlet pipe, a branch liquid phase outlet pipe I, a branch gas phase pipe I, a branch liquid phase outlet pipe II, a branch gas phase pipe II, a high-pressure pipe, a high-pressure pump, an emergency water injection valve, a main sewage discharge pipe, a branch sewage discharge pipe I, a branch sewage discharge pipe II, a water seal well, an odorizing device, an odorizing pipe, a filling device, a compression pipe, a branch compression pipe I and a branch compression pipe II, wherein the main liquid phase inlet pipe, the main liquid phase outlet pipe, the gas phase pipe and the compression pipe are respectively connected with the first storage tank; the second storage tank is connected and communicated with a branch liquid phase inlet pipe, a branch liquid phase outlet pipe I, a branch gas phase pipe I and a branch compression pipe I, the branch liquid phase inlet pipe is connected with the main liquid phase inlet pipe, the branch liquid phase outlet pipe I is connected with the main liquid phase outlet pipe, the branch gas phase pipe I is connected with the gas phase pipe, and the branch compression pipe I is connected with the compression pipe; the residual liquid tank is communicated with a branch liquid phase outlet pipe II, a branch gas phase pipe II and a branch compression pipe II, the branch liquid phase outlet pipe II is communicated with the branch liquid phase outlet pipe, the branch gas phase pipe II is communicated with the branch gas phase pipe, and the branch compression pipe II is communicated with the branch compression pipe;
one end of the main sewage discharge pipe is connected with the second storage tank, and the other end of the main sewage discharge pipe is placed into the water seal well; one end of the first branch sewage discharge pipe is connected with the first storage tank, and the other end of the first branch sewage discharge pipe is connected with the main sewage discharge pipe; one end of the secondary branch sewage discharge pipe is connected with the residual liquid tank, and the other end of the secondary branch sewage discharge pipe is connected with the main sewage discharge pipe; one end of the high-pressure pipe is connected with the middle part of the main sewage discharge pipe, the other end of the high-pressure pipe is connected with the fire-fighting water pipe, the high-pressure pump is arranged on the high-pressure pipe, and the emergency water injection valve is arranged on the high-pressure pipe between the high-pressure pump and the main sewage discharge pipe;
one end of the odorizing pipe is connected with the middle part of the liquid phase inlet pipe, and the other end of the odorizing pipe is connected with the odorizing device; the filling device comprises a filling pipe, a return pipe and a pressure relief pipe, wherein the right end of the filling pipe is connected with the lower part of the main liquid outlet pipe; one end of the return pipe is connected with the left end of the filling pipe, and the other end of the return pipe is connected with the lower part of the main liquid phase inlet pipe; one end of the pressure relief pipe is connected with the middle part of the filling pipe, and the other end of the pressure relief pipe is connected with the middle part of the return pipe.
Further, the dimethyl ether storage and filling system for town gas further comprises a first root stop valve, a first root ball valve, a first root check valve, a first emergency cut-off valve, a first tank car loading and unloading port ball valve and a first tank car loading and unloading port stop valve, wherein the first root stop valve and the first root ball valve are respectively arranged at the intersection of the main liquid inlet pipe, the main liquid outlet pipe, the gas phase pipe and the compression pipe and the first storage tank, and the first root stop valve is positioned below the first root ball valve; the upper part of the main liquid inlet pipe is also provided with a first root check valve, the upper part of the main liquid outlet pipe is also provided with a first emergency cut-off valve, and the first root check valve and the first emergency cut-off valve are positioned below the first root cut-off valve; the lower ends of the main liquid phase inlet pipe, the main liquid phase outlet pipe and the gas phase pipe are respectively provided with a tank car loading and unloading port ball valve and a tank car loading and unloading port stop valve, and the tank car loading and unloading port ball valve is positioned above the tank car loading and unloading port stop valve.
Further, the dimethyl ether storage and filling system for town gas further comprises a root stop valve II, a root ball valve II, a root check valve II and an emergency stop valve II, wherein the root stop valve II and the root ball valve II are respectively arranged at the intersection joints of the branch liquid phase inlet pipe, the branch liquid phase outlet pipe I, the branch gas phase pipe I and the branch compression pipe I and the second storage tank, and the root stop valve II is positioned below the root ball valve II; the upper portion that the branch liquid phase advances the pipe still is provided with one root check valve two, the upper portion that the branch liquid phase goes out the pipe one still is provided with one emergency cut-off valve two, and root check valve two, emergency cut-off valve two are located the below of root stop valve two.
Further, the dimethyl ether storage and filling system for town gas further comprises a root stop valve III, a root ball valve III, a residual liquid pipe, a residual liquid pumping connecting pipe, a compressor, a pressurizing pipe and a compressor control valve, wherein one end of the residual liquid pipe is connected with a residual liquid tank, and the other end of the residual liquid pipe is connected with the residual liquid pumping connecting pipe; a root stop valve III and a root ball valve III are respectively arranged at the intersection joints of the branch liquid phase outlet pipe II, the branch gas phase pipe II, the branch compression pipe II and the residual liquid pipe and the residual liquid tank, and the root stop valve III is positioned below the root ball valve III; one end of the pressurizing pipe is connected with the residue pumping connecting pipe, the other end of the pressurizing pipe is connected with the lower part of the gas phase pipe, and a compressor control valve is further arranged on the pressurizing pipe; the residual liquid pipe also comprises a residual liquid pouring valve, the pressurizing pipe also comprises a pressurizing valve, the residual liquid pouring valve is arranged at the joint of the residual liquid pipe and the residual liquid pumping connecting pipe, and the pressurizing valve is arranged at the joint of the pressurizing pipe and the residual liquid pumping connecting pipe; one end of the compression pipe is connected with the first storage tank, and the other end of the compression pipe is connected with the compressor; the compressor also comprises a pressurization connecting pipe, a compressor stop valve and a compressor ball valve, wherein one end of the pressurization connecting pipe is connected with the compressor, and the other end of the pressurization connecting pipe is connected with the middle part of the pressurization pipe; the middle part of the pressurization connecting pipe is provided with a compressor stop valve, and a compressor ball valve is arranged at the joint of the compression pipe and the compressor.
Further, the dimethyl ether storage and filling system for town gas also comprises a blow-down valve, wherein two blow-down valves are arranged at the joint of the main blow-down pipe and the second storage tank, and a blow-down valve is arranged on the main blow-down pipe above the water seal well; two drain valves are also arranged at the joint of the first branch drain pipe and the first storage tank; and two drain valves are also arranged at the joint of the second branch drain pipe and the residual liquid tank.
Further, add smelly pipe including adding smelly manometer, check valve, it adds smelly manometer to be provided with on the smelly pipe, still be provided with the check valve on adding smelly manometer and the liquid phase advances the smelly pipe between the pipe.
The filling device further comprises a filter, a hydrocarbon pump, an electronic filling scale, an automatic safety valve, a manual backflow valve and an electronic scale ball valve, wherein the filter, the hydrocarbon pump, a filling pressure gauge and the electronic filling scale are sequentially arranged on the filling pipe from right to left; an automatic safety valve is arranged at the joint of the return pipe and the filling pipe; the middle part of the pressure relief pipe is provided with a manual reflux valve; fill on the dress pipe and connect and have a plurality of electronics to fill dress balance, and the electronics fills and is filled the dress balance and fill and be provided with the electronic scale ball valve between the dress pipe.
Furthermore, the filling device also comprises a filling pressure gauge, a hydrocarbon pump outlet ball valve and a hydrocarbon pump inlet ball valve, wherein the filling pressure gauge is positioned between the hydrocarbon pump and the electronic filling scale, and a hydrocarbon pump outlet ball valve is also arranged on a filling pipe between the filling pressure gauge and the hydrocarbon pump; and a filling pipe between the filter and the main liquid phase outlet pipe is also provided with a hydrocarbon pump inlet ball valve.
Further, the odorizing device comprises an odorizing pump, a control box, an odorizing valve and an odorizing agent storage tank, wherein the control box is connected with the odorizing pump; the odorizing pump is connected with an odorizing pipe, and an odorizing valve is arranged at the joint of the odorizing pipe and the odorizing pump; the odorizing agent storage tank comprises a liquid level meter, an odorizing agent inlet and a storage tank bottom valve, wherein the liquid level meter is installed on the odorizing agent storage tank, and the odorizing agent inlet is vertically arranged at the upper end of the odorizing agent storage tank; the lower end of the odorizing agent storage tank is provided with a storage tank bottom valve.
The odorizing device further comprises an odorizing agent return pipe, an odorizing agent inlet pipe and an overhauling ball valve, wherein the odorizing agent return pipe is connected to the upper end of the odorizing pump, the odorizing agent inlet pipe is connected to the lower end of the odorizing pump, a backflow valve is arranged in the middle of the odorizing agent return pipe, and the overhauling ball valve is arranged in the middle of the odorizing agent inlet pipe; the odorizing pump is connected with a storage tank bottom valve of the odorizing agent storage tank through an odorizing agent inlet pipe, one end of the odorizing agent return pipe is connected with the odorizing agent storage tank, and the other end of the odorizing agent return pipe is connected with the odorizing pipe.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the invention, through arranging the first branch gas phase pipe, the second branch gas phase pipe, the high-pressure pump, the emergency water injection valve, the main sewage discharge pipe, the first branch sewage discharge pipe, the compressor, the compression pipe, the first branch compression pipe and the second branch compression pipe, and carrying out corresponding operation, after water is injected into the first storage tank or the second storage tank, the leakage of the first root stop valve, the first root ball valve or the second root stop valve and the second root ball valve is also water, so that the leakage points can be treated by an organizer, the tank reversing function can be realized, the time is strived for emergency treatment, the explosive gas is prevented from being formed in the first storage tank or the second storage tank, the danger is avoided, the loss of dimethyl ether is reduced, and the economic loss is prevented from being further expanded.
The odorous liquid agent produced by the odorizing device is dripped into the liquid phase inlet pipe through the odorizing pipe, so that the liquid dimethyl ether is odorized, the dimethyl ether is easy to detect when the dimethyl ether leaks, and the odorous liquid agent is safer to produce and use as town gas.
And thirdly, when the pressure displayed by the filling pressure gauge is overlarge, the manual reflux valve on the pressure relief pipe can be opened, and the liquid dimethyl ether in the filling pipe can flow into the reflux pipe through the pressure relief pipe, so that the pressure of the filling pipe can be reduced by the multi-pipeline reflux and decompression design, the smooth filling work is ensured, and meanwhile, the manual reflux valve can be designed to prevent accidents caused by the damage of the automatic safety valve.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
(the same parts are labeled consistently in the following figures)
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view showing the structure of the odorizing device of the present invention.
Fig. 3 is a schematic view of the construction of the filling device according to the invention.
In the figure, 1 is a first storage tank, 2 is a second storage tank, 3 is a residual liquid tank, 4 is a gas phase pipe, 5 is a main liquid phase outlet pipe, 6 is a main liquid phase inlet pipe, 7 is a root stop valve I, 7-1 is a root ball valve I, 8 is a root check valve I, 8-1 is an emergency stop valve I, 8-2 is a root check valve II, 8-3 is an emergency stop valve II, 9 is a root stop valve II, 9-1 is a root ball valve II, 9-2 is a root stop valve III, 9-3 is a root ball valve III, 10 is a branch liquid phase inlet pipe, 11 is a branch liquid phase outlet pipe I, 11-1 is a branch liquid phase outlet pipe II, 12 is a branch gas phase pipe I, 12-1 is a branch gas phase pipe II, 13 is a high pressure pipe, 14 is a high pressure pump, 15 is an emergency water injection valve, 16 is a main sewage discharge pipe, 17 is a branch sewage discharge pipe I, 17-1 is a branch sewage discharge pipe, 18. a blow-down valve, 19, a water seal well, 20, a fire water pipe, 21, a residual liquid pipe, 22, a residual pumping connecting pipe, 22-1, a residual pouring valve, 22-2, a pressure valve, 23, a pressure pipe, 24, a compressor control valve, 25, a compression pipe, 25-1, a first compression pipe, 25-2, a second compression pipe, 26, a compressor, 27, a pressure connecting pipe, 28, a compressor stop valve, 28-1, a compressor ball valve, 29, an odorizing device, 29-1, an odorizing agent storage tank, 29-11, a liquid level meter, 29-12, an odorizing agent inlet, 29-13, a storage tank bottom valve, 29-2, an odorizing pump, 29-3, a control box, 29-4, an odorizing valve, 29-5, an odorizing agent return pipe, 29-6, an odorizing agent inlet pipe, 29-7, a return valve, 29-8, an overhauling ball valve, 30. the device comprises an odorizing pipe, 31, an odorizing pressure gauge, 32, a check valve, 33, a filling device, 33-1, a filling pipe, 33-2, a filter, 33-3, a hydrocarbon pump, 33-4, an electronic filling scale, 33-5, an electronic scale ball valve, 33-6, a hydrocarbon pump outlet ball valve, 33-7, an automatic safety valve, 33-8, a filling pressure gauge, 33-9, a return pipe, 33-10, a pressure relief pipe, 33-11, a hydrocarbon pump inlet ball valve, 33-12, a manual return valve, 34, a tank truck loading and unloading port ball valve, 35, a tank truck loading and unloading port stop valve and 36, a dimethyl ether gas cylinder.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
As shown in fig. 1-3, a dimethyl ether storage and filling system for town gas comprises a first storage tank, a second storage tank, a residual liquid tank, a gas phase pipe, a main liquid phase outlet pipe, a main liquid phase inlet pipe, a branch liquid phase outlet pipe I, a branch gas phase pipe I, a branch liquid phase outlet pipe II, a branch gas phase pipe II, a high pressure pipe, a high pressure pump, an emergency water injection valve, a main blowdown pipe, a branch blowdown pipe I, a branch blowdown pipe II, a water seal well, an odorizing device, an odorizing pipe, a filling device, a compression pipe, a branch compression pipe I and a branch compression pipe II, wherein the main liquid phase inlet pipe, the main liquid phase outlet pipe, the gas phase pipe and the compression pipe are respectively connected with the first storage tank; the second storage tank is connected and communicated with a branch liquid phase inlet pipe, a branch liquid phase outlet pipe I, a branch gas phase pipe I and a branch compression pipe I, the branch liquid phase inlet pipe is connected with the main liquid phase inlet pipe, the branch liquid phase outlet pipe I is connected with the main liquid phase outlet pipe, the branch gas phase pipe I is connected with the gas phase pipe, and the branch compression pipe I is connected with the compression pipe; the residual liquid tank is connected and communicated with a branch liquid phase outlet pipe II, a branch gas phase pipe II and a branch compression pipe II, the branch liquid phase outlet pipe II is communicated with the branch liquid phase outlet pipe, the branch gas phase pipe II is communicated with the branch gas phase pipe, and the branch compression pipe II is communicated with the branch compression pipe.
One end of the main sewage discharge pipe is connected with the second storage tank, and the other end of the main sewage discharge pipe is placed into the water seal well; one end of the first branch sewage discharge pipe is connected with the first storage tank, and the other end of the first branch sewage discharge pipe is connected with the main sewage discharge pipe; one end of the secondary branch sewage discharge pipe is connected with the residual liquid tank, and the other end of the secondary branch sewage discharge pipe is connected with the main sewage discharge pipe; the one end of high-pressure pipe and the middle part of main blowdown pipe are connected, the other end and the fire-fighting water pipe of high-pressure pipe are connected, the high-pressure pump sets up on the high-pressure pipe, emergent water injection valve sets up on the high-pressure pipe between high-pressure pump and the main blowdown pipe.
One end of the odorizing pipe is connected with the middle part of the liquid phase inlet pipe, and the other end of the odorizing pipe is connected with the odorizing device; the filling device comprises a filling pipe, a return pipe and a pressure relief pipe, wherein the right end of the filling pipe is connected with the lower part of the main liquid outlet pipe; one end of the return pipe is connected with the left end of the filling pipe, and the other end of the return pipe is connected with the lower part of the main liquid phase inlet pipe; one end of the pressure relief pipe is connected with the middle part of the filling pipe, and the other end of the pressure relief pipe is connected with the middle part of the return pipe.
In each embodiment, preferably, the dimethyl ether storage and filling system for town gas further comprises a first root stop valve, a first root ball valve, a first root check valve, a first emergency cut-off valve, a first tank car loading and unloading port ball valve and a first tank car loading and unloading port stop valve, wherein the first root stop valve and the first root ball valve are respectively arranged at the intersection of the main liquid inlet pipe, the main liquid outlet pipe, the gas phase pipe and the compression pipe and the first storage tank, and the first root stop valve is positioned below the first root ball valve; the upper part of the main liquid inlet pipe is also provided with a first root check valve, the upper part of the main liquid outlet pipe is also provided with a first emergency cut-off valve, and the first root check valve and the first emergency cut-off valve are positioned below the first root cut-off valve; the lower ends of the main liquid phase inlet pipe, the main liquid phase outlet pipe and the gas phase pipe are respectively provided with a tank car loading and unloading port ball valve and a tank car loading and unloading port stop valve, and the tank car loading and unloading port ball valve is positioned above the tank car loading and unloading port stop valve.
In each embodiment, preferably, the dimethyl ether storage and filling system for town gas further comprises a root stop valve II, a root ball valve II, a root check valve II and an emergency cut-off valve II, wherein the root stop valve II and the root ball valve II are respectively arranged at the intersection joints of the branch liquid phase inlet pipe, the branch liquid phase outlet pipe I, the branch gas phase pipe I and the branch compression pipe I and the second storage tank, and the root stop valve II is positioned below the root ball valve II; the upper portion that the branch liquid phase advances the pipe still is provided with one root check valve two, the upper portion that the branch liquid phase goes out the pipe one still is provided with one emergency cut-off valve two, and root check valve two, emergency cut-off valve two are located the below of root stop valve two.
In each embodiment, preferably, the dimethyl ether storage and filling system for town gas further comprises a root stop valve III, a root ball valve III, a residual liquid pipe, a residual liquid pumping connecting pipe, a compressor, a pressurizing pipe and a compressor control valve, wherein one end of the residual liquid pipe is connected with the residual liquid tank, and the other end of the residual liquid pipe is connected with the residual liquid pumping connecting pipe; a root stop valve III and a root ball valve III are respectively arranged at the intersection joints of the branch liquid phase outlet pipe II, the branch gas phase pipe II, the branch compression pipe II and the residual liquid pipe and the residual liquid tank, and the root stop valve III is positioned below the root ball valve III; one end of the pressurizing pipe is connected with the residue pumping connecting pipe, the other end of the pressurizing pipe is connected with the lower part of the gas phase pipe, and a compressor control valve is further arranged on the pressurizing pipe; the residual liquid pipe also comprises a residual liquid pouring valve, the pressurizing pipe also comprises a pressurizing valve, the residual liquid pouring valve is arranged at the joint of the residual liquid pipe and the residual liquid pumping connecting pipe, and the pressurizing valve is arranged at the joint of the pressurizing pipe and the residual liquid pumping connecting pipe; one end of the compression pipe is connected with the first storage tank, and the other end of the compression pipe is connected with the compressor; the compressor also comprises a pressurization connecting pipe, a compressor stop valve and a compressor ball valve, wherein one end of the pressurization connecting pipe is connected with the compressor, and the other end of the pressurization connecting pipe is connected with the middle part of the pressurization pipe; the middle part of the pressurization connecting pipe is provided with a compressor stop valve, and a compressor ball valve is arranged at the joint of the compression pipe and the compressor.
In each embodiment, preferably, the dimethyl ether storage and filling system for town gas further comprises a blow-down valve, wherein two blow-down valves are arranged at the joint of the main blow-down pipe and the second storage tank, and one blow-down valve is arranged on the main blow-down pipe above the water seal well; two drain valves are also arranged at the joint of the first branch drain pipe and the first storage tank; and two drain valves are also arranged at the joint of the second branch drain pipe and the residual liquid tank.
In each embodiment, preferably, the odorizing pipe comprises an odorizing pressure gauge and a check valve, the odorizing pressure gauge is arranged on the odorizing pipe, and the check valve is further arranged on the odorizing pipe between the odorizing pressure gauge and the liquid phase inlet pipe.
In each embodiment, preferably, the filling device further comprises a filter, a hydrocarbon pump, an electronic filling scale, an automatic safety valve, a manual return valve and an electronic scale ball valve, and the filling pipe is provided with the filter, the hydrocarbon pump, a filling pressure gauge and the electronic filling scale from right to left in sequence; an automatic safety valve is arranged at the joint of the return pipe and the filling pipe; the middle part of the pressure relief pipe is provided with a manual reflux valve; fill on the dress pipe and connect and have a plurality of electronics to fill dress balance, and the electronics fills and is filled the dress balance and fill and be provided with the electronic scale ball valve between the dress pipe.
In each embodiment, preferably, the filling device further comprises a filling pressure gauge, a hydrocarbon pump outlet ball valve and a hydrocarbon pump inlet ball valve, the filling pressure gauge is located between the hydrocarbon pump and the electronic filling scale, and a hydrocarbon pump outlet ball valve is further arranged on a filling pipe between the filling pressure gauge and the hydrocarbon pump; and a filling pipe between the filter and the main liquid phase outlet pipe is also provided with a hydrocarbon pump inlet ball valve.
In each embodiment, preferably, the odorizing device comprises an odorizing pump, a control box, an odorizing valve and an odorizing agent storage tank, wherein the control box is connected with the odorizing pump; the odorizing pump is connected with an odorizing pipe, and an odorizing valve is arranged at the joint of the odorizing pipe and the odorizing pump; the odorizing agent storage tank comprises a liquid level meter, an odorizing agent inlet and a storage tank bottom valve, wherein the liquid level meter is installed on the odorizing agent storage tank, and the odorizing agent inlet is vertically arranged at the upper end of the odorizing agent storage tank; the lower end of the odorizing agent storage tank is provided with a storage tank bottom valve.
In each embodiment, preferably, the odorizing device further comprises an odorizing agent return pipe, an odorizing agent inlet pipe and a maintenance ball valve, the odorizing agent return pipe is connected to the upper end of the odorizing pump, the odorizing agent inlet pipe is connected to the lower end of the odorizing pump, a backflow valve is arranged in the middle of the odorizing agent return pipe, and the maintenance ball valve is arranged in the middle of the odorizing agent inlet pipe; the odorizing pump is connected with a storage tank bottom valve of the odorizing agent storage tank through an odorizing agent inlet pipe, one end of the odorizing agent return pipe is connected with the odorizing agent storage tank, and the other end of the odorizing agent return pipe is connected with the odorizing pipe.
In the practical application of the present invention, specifically, in the practical application of the present invention, when a leakage failure occurs in the first root stop valve and the first root ball valve on the main liquid inlet pipe and the main liquid outlet pipe which are communicated with the first storage tank, the second root stop valve and the second root ball valve of the first branch compression pipe are opened, and the third root stop valve and the third root ball valve of the compressor control valve, the compressor stop valve, the compressor ball valve, the compressor and the second branch gas phase pipe are opened accordingly, so that the air pressure in the second storage tank is pumped to the residual liquid tank through the compressor sequentially via the first branch compression pipe, the pressurization connecting pipe, the pressurization pipe, the gas phase pipe, the first branch gas phase pipe and the second branch gas phase pipe. Simultaneously, the high-pressure pump is immediately started, the emergency water injection valve and the blow-off valve on the first branch blow-off pipe are opened, the pressurized water flows into the first storage tank through the high-pressure pipe, the main blow-off pipe and the first branch blow-off pipe, the first storage tank stores liquid dimethyl ether, the weight of the liquid dimethyl ether is lighter than that of the water, the first root stop valve and the first root ball valve on the main liquid phase inlet pipe and the main liquid phase outlet pipe leak water filled into the first storage tank, emergency repair can be carried out, if the water cannot be treated at any time, the water can be always filled into the first storage tank, at the moment, the high-pressure water is continuously filled into the first storage tank, the liquid level of the first storage tank needs to be closely concerned, when the liquid level is close to the height of the gas phase pipe and the compression pipe in the storage tank, the compressor control valve and the compressor ball valve are immediately closed, then the first root stop valve and the first root ball valve of, the first storage tank and the second storage tank are communicated through the compression pipe and the branch compression pipe, the pressure of the first storage tank is higher than that of the second storage tank, and the liquid and gas level of dimethyl ether is higher than that of the gas phase pipe and the compression pipe, so that the dimethyl ether in the first storage tank can be poured into the second storage tank through the compression pipe and the branch compression pipe. Certainly, the first root stop valve and the first root ball valve of the gas phase pipe, the second root stop valve and the second root ball valve of the first branch gas phase pipe can be opened, the first storage tank and the second storage tank are communicated through the gas phase pipe and the first branch gas phase pipe, and the dimethyl ether in the first storage tank is further and quickly poured into the second storage tank through the gas phase pipe and the first branch gas phase pipe. After water is injected into the first storage tank, the first root stop valve and the first root ball valve leak water, so that the leakage points can be treated by the organization personnel, the tank switching function can be realized, the time is struggled for emergency treatment, the explosive gas is prevented from being formed in the first storage tank, the danger is avoided, the loss of dimethyl ether is reduced, and the economic loss is prevented from being further expanded.
Similarly, in the practical application of the present invention, specifically, when the leakage failure occurs in the root stop valve two and the root ball valve two on the branch liquid inlet pipe and the branch liquid outlet pipe one communicated with the second storage tank, the root stop valve one and the root ball valve one of the compression pipe are opened, and the compressor control valve, the compressor stop valve, the compressor ball valve, the compressor and the root stop valve three and the root ball valve three of the branch gas phase pipe two are opened accordingly, so that the air pressure in the first storage tank is pumped to the residual liquid tank through the compression pipe, the pressurization connecting pipe, the pressurization pipe, the gas phase pipe, the branch gas phase pipe one and the branch gas phase pipe two in sequence by the compressor. Simultaneously, the high-pressure pump is immediately started, the emergency water injection valve and the two blow-off valves on the main blow-off pipe are opened, the pressurized water is filled into the second storage tank through the high-pressure pipe and the main blow-off pipe, because the liquid dimethyl ether is stored in the second storage tank, and the weight of the liquid dimethyl ether is lighter than that of the water, the water filled into the second storage tank is also leaked by the root stop valve II and the root ball valve II on the branch liquid inlet pipe and the branch liquid outlet pipe I, emergency repair can be carried out, if the treatment cannot be carried out for a moment, the water can be filled into the second storage tank all the time, the liquid level of the second storage tank needs to be closely concerned because the high-pressure water is continuously filled into the second storage tank, when the liquid level is close to the height of the gas phase pipe I and the branch liquid pipe I in the storage tank, the compressor control valve and the compressor ball valve are immediately closed, and then the root stop valve II and the root ball valve II, the first storage tank and the second storage tank are communicated through the first compression pipe and the compression pipe, the pressure of the second storage tank is higher than that of the first storage tank, and the liquid-gas level of dimethyl ether is higher than that of the first compression pipe and that of the first compression pipe, so that the dimethyl ether in the second storage tank can be poured into the first storage tank through the first compression pipe and the first compression pipe. Certainly, the root stop valve II and the root ball valve II of the first gas phase pipe can be also used for opening the root stop valve I and the root ball valve I of the first gas phase pipe, communicating the second storage tank and the first storage tank through the first gas phase pipe and the gas phase pipe, and further quickly pouring the dimethyl ether in the second storage tank into the first storage tank through the first gas phase pipe and the gas phase pipe. After water is injected into the second storage tank, the second root stop valve and the second root ball valve leak water, so that the leakage points can be treated by the organization personnel, the tank switching function can be realized, the time is struggled for emergency treatment, explosive gas is prevented from being formed in the second storage tank, danger is avoided, the loss of dimethyl ether is reduced, and the economic loss is prevented from being further expanded.
In the practical application of the invention, specifically, after the tank car arrives at a station, the main liquid phase inlet pipe and the gas phase pipe are communicated with the tank car, the first root stop valve, the first root ball valve, the first root check valve, the ball valve of the loading and unloading port of the tank car and the loading and unloading port of the tank car of the main liquid phase inlet pipe are opened, the first root stop valve, the first root ball valve, the ball valve of the loading and unloading port of the tank car and the loading and unloading port of the tank car of the gas phase pipe are opened, the first root stop valve and the first root ball valve of the compression pipe are opened, simultaneously, a compressor control valve, a compressor stop valve, a compressor ball valve and a compressor are opened, the pressure of the first storage tank is pumped into the tank wagon through the compressor, when the pressure of the tank car is higher than that of the first storage tank, the liquid dimethyl ether is unloaded into the first storage tank through the main liquid phase inlet pipe to realize unloading, and the root stop valve II and the root ball valve II of the branch liquid phase inlet pipe are opened to fill the liquid dimethyl ether into the second storage tank. The odorizing device is opened while unloading, the dosage is adjusted according to the standard of 25mg/m3, and the odorizing liquid agent generated by the odorizing device is dripped into the liquid phase inlet pipe through the odorizing pipe, so that the liquid dimethyl ether is odorized and smells. The arrangement of the odorizing pressure gauge can observe odorizing and pressure in the first storage tank in real time, and then adjustment is carried out according to requirements and actual conditions; the check valve can prevent the dimethyl ether from flowing backwards, and is favorable for the stability of the odorizing work.
In the practical application of the invention, specifically, the first root stop valve and the first root ball valve of the main liquid phase outlet pipe are opened, and the odorized liquid dimethyl ether in the first storage tank or the second storage tank flows into the filling pipe of the filling device through the main liquid phase outlet pipe, then flows into the electronic filling scale through the filter, the hydrocarbon pump and the filling pressure gauge in sequence, the dimethyl ether can be filled into the dimethyl ether gas cylinder by opening the ball valve of the electronic scale, the automatic safety valve is opened, and the liquid dimethyl ether in the filling pipe can flow back to the liquid phase inlet pipe and then flows into the first storage tank or the second storage tank through the return pipe. When the pressure displayed by the filling pressure gauge is too large, the manual reflux valve on the pressure relief pipe can be opened, and the liquid dimethyl ether in the filling pipe can flow into the reflux pipe through the pressure relief pipe, so that the pressure of the filling pipe can be reduced by adopting a multi-pipe flow and pressure reduction design, and the smooth filling work is ensured. Wherein, the compressor stop valve set up can prevent the dimethyl ether problem of flowing backward's production, does benefit to the stability of filling work. Meanwhile, the manual reflux valve is designed to prevent accidents caused by damage of the automatic safety valve.
In the practical application of the invention, specifically, when the dimethyl ether gas cylinder with residual liquid needs to be subjected to residue pumping, the dimethyl ether gas cylinder is only required to be communicated with the residue pumping connecting pipe, then the root stop valve III and the root ball valve III of the branch compression pipe II are opened, the compressor stop valve, the compressor ball valve and the pressurizing valve are opened at the same time, the compressor is started to pressurize the dimethyl ether gas cylinder, when the pressure of the dimethyl ether gas cylinder is higher than that of the residue tank, the compressor and the pressurizing valve are closed at the moment, the root stop valve III and the root ball valve III of the residue pipe are opened, then the residue pouring valve is opened after the dimethyl ether gas cylinder is poured, the residue pouring valve can be closed after the gas flow sound is heard, the residual liquid of the dimethyl ether gas cylinder is pressed into the residue tank due to the pressure difference factor, and the residue pumping work.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims (4)

1. A dimethyl ether storage and filling system for town gas comprises a first storage tank, a second storage tank, a residual liquid tank, a gas phase pipe, a main liquid phase outlet pipe, a main liquid phase inlet pipe, a branch liquid phase outlet pipe I, a branch gas phase pipe I, a branch liquid phase outlet pipe II, a branch gas phase pipe II, a high-pressure pipe, a high-pressure pump, an emergency water injection valve, a main sewage discharge pipe, a branch sewage discharge pipe I, a branch sewage discharge pipe II, a water seal well, an odorizing device, an odorizing pipe, a filling device, a compression pipe, a branch compression pipe I, a branch compression pipe II, a root check valve I, an emergency stop valve I, a root check valve II, an emergency stop valve II, a root stop valve III, a ball valve root III, a residual liquid pipe, a residual pumping connecting pipe, a compressor, a pressurization pipe and a compressor control valve, and is characterized in that one end of the main sewage discharge pipe is connected with the second storage tank, and the other; one end of the first branch sewage discharge pipe is connected with the first storage tank, and the other end of the first branch sewage discharge pipe is connected with the main sewage discharge pipe; one end of the secondary branch sewage discharge pipe is connected with the residual liquid tank, and the other end of the secondary branch sewage discharge pipe is connected with the main sewage discharge pipe; one end of the high-pressure pipe is connected with the middle part of the main sewage discharge pipe, the other end of the high-pressure pipe is connected with the fire-fighting water pipe, the high-pressure pump is arranged on the high-pressure pipe, and the emergency water injection valve is arranged on the high-pressure pipe between the high-pressure pump and the main sewage discharge pipe;
the filling device comprises a filling pipe, a return pipe, a pressure relief pipe and a manual return valve, wherein one end of the pressure relief pipe is connected and communicated with the middle part of the filling pipe, and the other end of the pressure relief pipe is connected and communicated with the middle part of the return pipe; the middle part of the pressure relief pipe is provided with a manual reflux valve;
when the leakage faults occur on the root stop valve I and the root ball valve I on the main liquid phase inlet pipe and the main liquid phase outlet pipe which are communicated with the first storage tank, the root stop valve II and the root ball valve II of the first branch compression pipe are opened, and the compressor control valve, the compressor stop valve, the compressor ball valve, the compressor and the root stop valve III and the root ball valve III of the second branch gas phase pipe are opened in sequence, so that the air pressure in the second storage tank is pumped to the residual liquid tank through the compressor sequentially through the first branch compression pipe, the pressurization connecting pipe, the pressurization pipe, the gas phase pipe, the first branch gas phase pipe and the second branch gas phase pipe; simultaneously, the high-pressure pump is immediately started, the emergency water injection valve and the blow-off valve on the branch blow-off pipe I are opened, the pressurized water is filled into the first storage tank through the high-pressure pipe, the main blow-off pipe and the branch blow-off pipe I, and when the liquid level is close to the heights of the gas phase pipe and the compression pipe in the storage tank, the compressor control valve and the compressor ball valve are immediately closed; then opening a root stop valve I and a root ball valve I of the compression pipe, and communicating the first storage tank and the second storage tank through the compression pipe and a branch compression pipe I, wherein the dimethyl ether in the first storage tank can be poured into the second storage tank through the compression pipe and the branch compression pipe I after the pressure of the first storage tank is higher than that of the second storage tank and the liquid-gas level of the dimethyl ether is higher than that of the gas-phase pipe and the compression pipe;
when the leakage faults of a root stop valve II and a root ball valve II on a branch liquid phase inlet pipe and a branch liquid phase outlet pipe I which are communicated with the second storage tank occur, the root stop valve I and the root ball valve I of the compression pipe are opened, and a compressor control valve, a compressor stop valve, a compressor ball valve, a compressor, a root stop valve III and a root ball valve III of the branch gas phase pipe II are opened in sequence, so that the air pressure in the first storage tank is pumped to a residual liquid tank through the compression pipe, a pressurization connecting pipe, a pressurization pipe, a gas phase pipe, a branch gas phase pipe I and a branch gas phase pipe II in sequence by the compressor; simultaneously, the high-pressure pump is immediately started, the emergency water injection valve and two blowdown valves on the main blowdown pipe are opened, the pressurized water is filled into a second storage tank through the high-pressure pipe and the main blowdown pipe, and when the liquid level approaches the height of a first branch gas phase pipe and a first branch compression pipe in the storage tank, the compressor, a compressor control valve and a compressor ball valve are immediately closed; then the root stop valve II and the root ball valve II of the first compression pipe are opened, the first storage tank and the second storage tank can be communicated through the first compression pipe and the compression pipe, the pressure of the second storage tank is higher than that of the first storage tank, and after the liquid-gas level of dimethyl ether is higher than that of the first compression pipe and that of the first compression pipe, the dimethyl ether in the second storage tank can be poured into the first storage tank through the first compression pipe and the compression pipe.
2. The dimethyl ether storage and filling system for town gas according to claim 1, further comprising a blowdown valve, wherein two blowdown valves are arranged at the joint of the main blowdown pipe and the second storage tank, and one blowdown valve is arranged on the main blowdown pipe above the water-sealed well; two drain valves are also arranged at the joint of the first branch drain pipe and the first storage tank; and two drain valves are also arranged at the joint of the second branch drain pipe and the residual liquid tank.
3. The dimethyl ether storage and filling system for town gas as recited in claim 1, wherein the filling device further comprises a filter, a hydrocarbon pump, an electronic filling scale, an automatic safety valve, an electronic scale ball valve, the filling pipe is provided with the filter, the hydrocarbon pump, a filling pressure gauge and the electronic filling scale from right to left; an automatic safety valve is arranged at the joint of the return pipe and the filling pipe; a plurality of electronic filling scales are communicated with the filling pipe in a connecting way, and an electronic scale ball valve is arranged between each electronic filling scale and the filling pipe; the filling device also comprises a filling pressure gauge, a hydrocarbon pump outlet ball valve and a hydrocarbon pump inlet ball valve, wherein the filling pressure gauge is positioned between the hydrocarbon pump and the electronic filling scale, and a hydrocarbon pump outlet ball valve is also arranged on a filling pipe between the filling pressure gauge and the hydrocarbon pump; and a filling pipe between the filter and the main liquid phase outlet pipe is also provided with a hydrocarbon pump inlet ball valve.
4. The dimethyl ether storage and filling system for town gas according to claim 1, wherein the odorizing device further comprises an odorizing agent return pipe, an odorizing agent inlet pipe and a maintenance ball valve, wherein a return valve is arranged in the middle of the odorizing agent return pipe, and the maintenance ball valve is arranged in the middle of the odorizing agent inlet pipe.
CN201710708766.9A 2017-08-17 2017-08-17 Dimethyl ether storage and filling system for town gas Active CN107289322B (en)

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CN107606482B (en) * 2017-11-07 2023-06-20 荆门宏图特种飞行器制造有限公司 Liquefied petroleum gas ship unloading device and ship unloading pry thereof
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Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1027394C (en) * 1990-12-21 1995-01-11 苏香瑞 Storaging and filling system of liquefied petroleum gas
CN2680960Y (en) * 2004-03-14 2005-02-23 陈关键 Leakage preventing pipe network structure for liquefied petroleum gas tank
CN101649958B (en) * 2009-09-07 2012-12-12 贵州天福化工有限责任公司 Air supply method for pipe network of dimethyl ether bottle group station
CN201636530U (en) * 2009-12-14 2010-11-17 沈阳贝尔燃气有限公司 Automatic fuel gas odorizing device
CN101761772B (en) * 2010-01-08 2011-04-13 广西柳州海湾恒日化工气体有限公司 Compressed liquefied gas charging system
CN202012745U (en) * 2010-06-29 2011-10-19 孔庆华 Air-pressure type gas odorization machine
CN202791340U (en) * 2012-05-22 2013-03-13 鹤壁宝发能源科技股份有限公司 Civil dimethyl ether fuel gas special pipeline concentrating gas supply station
CN202733450U (en) * 2012-09-06 2013-02-13 沈阳光正工业有限公司 Output detection compensation system of odorizing device
CN103591462A (en) * 2013-11-15 2014-02-19 乐山倍创机械制造有限公司 Fuel gas odorization device
CN105333309A (en) * 2014-08-16 2016-02-17 西安格瑞德化工新材料有限公司 Urban gas supply device
CN104964165A (en) * 2015-07-30 2015-10-07 北京市煤气热力工程设计院有限公司 Small odorizing device applied to skid-mounted LNG gasification device and method
CN205678425U (en) * 2016-05-31 2016-11-09 上海汇菲化工有限公司 A kind of natural gas adds smelly equipment automatically
CN106090603B (en) * 2016-07-28 2019-11-05 北京京诚泽宇能源环保工程技术有限公司 LPG residual liquid recovery system and method
CN206018260U (en) * 2016-08-29 2017-03-15 贵州望江气体有限公司 A kind of charging device of gases at high pressure

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