CN101294655A

CN101294655A - Low-pressure storing high-pressure transferring low-temperature storage tank

Info

Publication number: CN101294655A
Application number: CNA2007100980014A
Authority: CN
Inventors: 周立军
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-24
Filing date: 2007-04-24
Publication date: 2008-10-29

Abstract

A low-pressure store and high-pressure supply cryogenic tank relates to a cryogenic liquid store and transport device and aims to solve the problems of the prior cryogenic tank that the pressure is higher, the inner bag wall is thicker. The invention includes a cryogenic tank and an inner bag, two pressurizing vessels are arranged below the cryogenic tank, two holes at the bottom of the inner bag are respectively connected with two king valves on the top parts of the pressurizing vessels; an inlet valve body, an inlet one-way valve, an inlet valve and a pressure relief pipe are also provided, the pressure relief pipe is connected with a pore spray thrower; an upper floater, a lower floater, an inlet valve and an outlet valve are arranged in the pressurizing vessel and form a floater subassembly; the outlet valve body is connected with an outlet adjusting valve via a pipeline; a valve is arranged in an outlet distribution valve; the outlet distribution valve body is connected with a pressurizing control valve via a pipeline; the pressurizing control valve is connected with the top part of the pressurizing vessel via a supercharger; and a pressurizing vessel casing is arranged out of the pressurizing vessel. The low-pressure store and high-pressure supply cryogenic tank has the advantages of low-pressure store and high-pressure application, thereby satisfying the different requirements of external supply air pressure under the condition of the invariable thickness of the inner bag wall of the cryogenic tank.

Description

Low-pressure storing high-pressure transferring low-temperature storage tank

[technical field]

The present invention relates to a kind of cryogenic liquide storage and transportation equipment

[background technique]

The design of current cryogenic tank adopts storage capacity+working pressure to decide the way of storage tank inner bag wall thickness with production, and regularly the high more inner bag wall thickness of (diameter is certain) working pressure is thick more when volume one, and corresponding inner bag weight promptly increases; Because inner bag adopts austenitic stainless steel material to manufacture, material price is very high, and inner bag is the prime cost of cryogenic tank, and therefore along with the raising of working pressure, the manufacture cost of cryogenic tank promptly sharp rises, and has increased client's equipment investment cost.

[summary of the invention]

The purpose of this invention is to provide a kind of low-pressure storing high-pressure transferring low-temperature storage tank, it adopts the storage capacity of cryogenic liquide to separate with working pressure, realize low pressure storage, high pressure uses, and can satisfy the different demand of external supply gas pressure under the constant situation of storage tank inner bag wall thickness.

Above-mentioned purpose is achieved in that it comprises cryogenic tank, the cryogenic tank inner bag is arranged in the cryogenic tank, two booster jars that structure is identical are housed below cryogenic tank, the bottom of cryogenic tank inner bag has two holes to be had pipeline to pass cryogenic tank respectively to link to each other with the booster jar main valve at two booster jar tops, realize the liquid supercharging by booster jar, external air feed: the booster jar main valve links to each other with the inlet valve body, in the inlet valve body inlet one-way valve is housed, inlet valve is arranged below the inlet one-way valve, between inlet one-way valve and the inlet valve relief tube is arranged, the relief tube on every booster jar top all passes through another booster jar inwall and spirals to rise and link to each other with the pore drencher that is contained in cryogenic tank inner bag bottom, have in the booster jar by last float, following float and inlet valve, the float assembly parts that outlet valve is formed, link to each other with inlet valve above the last float, link to each other with outlet valve below the following float, there is the float connecting rod to be connected between last float and the following float, outlet valve can slide up and down in the outlet valve body of pressure release pot bottom, the outlet valve body links to each other with booster jar outlet regulating valve by pipeline, the pipeline that connects two outlet regulating valves is provided with the outlet distributing valve, in the outlet distributing valve valve piece that can horizontally slip is housed, the valve piece is when the right side, left side booster jar outlet regulating valve is communicated with storage tank outlet regulating valve, the valve piece is when the left side, and right side booster jar outlet regulating valve is communicated with storage tank outlet regulating valve; Booster jar outlet valve body links to each other with the boost pressure regulation valve by pipeline, and the boost pressure regulation valve links to each other with the booster jar top through pressurized machine, establishes the booster jar shell in the booster jar outside.

Above-described various valve can partly or entirely adopt solenoid valve.

[description of drawings]

Accompanying drawing is a structural representation of the present invention.

[embodiment]

With reference to accompanying drawing, it comprises cryogenic tank 21, cryogenic tank inner bag 20 is arranged in the cryogenic tank, two booster jars 7 that structure is identical are housed below cryogenic tank, the bottom of cryogenic tank inner bag has two holes to be had pipeline to pass cryogenic tank respectively to link to each other with the booster jar main valve 1 at two booster jar tops, realize the liquid supercharging by booster jar, externally air feed; The booster jar main valve links to each other with inlet valve body 2, in the inlet valve body inlet one-way valve 3 is housed, inlet valve 5 is arranged below the inlet one-way valve, relief tube 4 is arranged between inlet one-way valve and the inlet valve, the relief tube on every booster jar top all passes through another booster jar inwall and spirals to rise and link to each other with the pore drencher 19 that is contained in cryogenic tank inner bag bottom, have in the booster jar by last float 6, following float 10 and inlet valve 5, the float assembly parts that outlet valve 11 is formed, link to each other with inlet valve above the last float, link to each other with outlet valve 11 below the following float, there is float connecting rod 9 to be connected between last float and the following float, outlet valve can slide up and down in the outlet valve body 12 of pressure release pot bottom, the outlet valve body links to each other with booster jar outlet regulating valve 15 by pipeline, the pipeline that connects two outlet regulating valves is provided with outlet distributing valve 18, in the outlet distributing valve valve piece 17 that can horizontally slip is housed, the valve piece is when the right side, left side booster jar outlet regulating valve 15 is communicated with storage tank outlet regulating valve 16, the valve piece is when the left side, and right side booster jar outlet regulating valve is communicated with storage tank outlet regulating valve 16; Booster jar outlet valve body 12 links to each other with boost pressure regulation valve 14 by pipeline, and the boost pressure regulation valve links to each other with the booster jar top through pressurized machine 13, establishes booster jar shell 8 in the booster jar outside.

Above-described various valve, can partly or entirely adopt solenoid valve, as booster jar main valve 1, inlet valve body 2, one-way valve 3, inlet valve 5, outlet valve 11, outlet valve body 12, boost pressure regulation valve 14, booster jar outlet regulating valve 15, storage tank outlet regulating valve 16, valve piece 17, outlet distributing valve 18.Working principle:

1.. after booster jar main valve 1 was opened, liquid was heavy in the inner bag 20, and gas is light in the booster jar 7, and liquid is dirty naturally, flowed in the booster jar, and gas is discharged in the inner bag 20 in the booster jar, and liquid has the trend that is full of gradually, was in the topping up state this moment.

2.. along with liquid levels increases,

float

6,10 is risen by floating function gradually in the booster jar in the booster jar, and float has the trend that rises to peak gradually.When buoyancy reaches maximum value, float rises to peak, and buoyancy is greater than the sum total of the pressure of liquid in float gross weight and the inner bag, and booster jar inlet valve 5 cuts out at this moment, outlet valve 11 is opened, and booster jar enters pressurized state by the effect of pressurized machine 13 and boost pressure regulation valve 14.

3.. when the booster jar internal pressure increased to the pressure of outlet regulating valve 15 settings, the supercharging pot liquid began to discharge, and enters the discharge opeing state.

4.. when the booster jar internal pressure increases to setting pressure, will upward pressure to inlet valve 5 generations, when liquid levels descends, when float buoyancy reduces, upwarding pressure can keep float not to be subjected to the influence of float gross weight and fall, and promptly keeps the booster jar inlet valve to close, and outlet valve is opened.

5.. when buoyancy is reduced to minimum value, the float gross weight will be above upwarding pressure, and float will drop to minimum point, at this moment, outlet valve cuts out, inlet valve is opened, owing to drain the effect of gas pressure, inlet one-way valve 3 is closed, the gas of draining will be discharged from relief tube 4, through decompression, cooling, process pore drencher 19 most of gases liquefy again and get back in the inner bag, and booster jar is in the pressure release state.

6.. when pressure releasing arrived minimum value, inlet one-way valve 3 was opened, and liquid flows into booster jar, and gas is discharged in the storage tank, and booster jar enters the topping up state again.

7.. after 1. booster jar enters the discharge opeing state, open 2. booster jar main valve 1 repeat above-mentioned 1., 2., 5., 6. step, 2. booster jar is in standby condition.

8.. 1. booster jar is in the state of discharge opeing, 1. outlet distributing valve 18 will be in the state of opening, 2. closing, after 1. booster jar has been arranged liquid, 2. the outlet pressure of booster jar will be greater than the 1. outlet pressure of booster jar, export distributing valve 18 this moment and be in 1. pass, 2. the state of opening: the outlet distributing valve can adjust 1. booster jar and 2. booster jar replace discharge opeing, make the storage tank drain uninterrupted continuously.

Several stressing conditions:

1, F last heavy ↓+F is heavy down ↓＞F presses ↑ (discharge opeing finishes, and following float buoyancy disappears)

2, F come-up ↑+F floats downward ↑＞F last heavy ↓+F is heavy down ↓ (topping up finishes, and float rises to peak, and the booster jar inlet valve cuts out, the outlet valve unlatching)

3, F last heavy ↓＜F presses ↑ (in the discharge opeing process, last float exposes liquid level, and following float continues to be immersed in the liquid)

4, F last heavy ↓+F is heavy down ↓＞F floats downward ↑ (topping up, float immerses liquid, goes up float and do not immerse liquid down)

By adjusting the latus rectum of booster jar inlet valve, outlet valve, the caliber of relief tube, pressure inlet is waited for the time of the time sum total of topping up, supercharging, pressure release less than discharge opeing, to guarantee that two booster jars are alternately continuously uninterruptedly to exterior liquid.

Advantage is to adopt the storage capacity of cryogenic liquid to separate with working pressure, utilizes the cold of cryogenic liquid Can be in system of the present utility model Automatic-boosting (without cryogenic pump and any external energy), produce The gases at high pressure externally way of output are realized low pressure storage, and the purpose that high pressure uses is at the storage tank wall of inner container In the thick constant situation, satisfy the different demand of external supply gas pressure, reduced greatly big volume, The cost of high pressure cryogenic tank is for the client saves equipment funds.

Claims

1, low-pressure storing high-pressure transferring low-temperature storage tank, comprise cryogenic tank (21), cryogenic tank inner bag (20) is arranged in the cryogenic tank, it is characterized in that below cryogenic tank, being equipped with two booster jars (7) that structure is identical, the bottom of cryogenic tank inner bag has two holes to be had pipeline to pass cryogenic tank respectively to link to each other with the booster jar main valve (1) at two booster jar tops, the booster jar main valve links to each other with inlet valve body (2), in the inlet valve body inlet one-way valve (3) is housed, inlet valve (5) is arranged below the inlet one-way valve, relief tube (4) is arranged between inlet one-way valve and the inlet valve, the relief tube on every booster jar top all passes through another booster jar inwall and spirals to rise and link to each other with the pore drencher (19) that is contained in cryogenic tank inner bag bottom, have in the booster jar by last float (6), following float (10) and inlet valve (5), the float assembly parts that outlet valve (11) is formed, link to each other with inlet valve above the last float, link to each other with outlet valve (11) below the following float, there is float connecting rod (9) to be connected between last float and the following float, outlet valve can slide up and down in the outlet valve body (12) of pressure release pot bottom, the outlet valve body links to each other with booster jar outlet regulating valve (15) by pipeline, the pipeline that connects two outlet regulating valves is provided with outlet distributing valve (18), in the outlet distributing valve valve piece (17) that can horizontally slip is housed, the valve piece is when the right side, left side booster jar outlet regulating valve (15) is communicated with storage tank outlet regulating valve (16), the valve piece is when the left side, and right side booster jar outlet regulating valve is communicated with storage tank outlet regulating valve (16); Booster jar outlet valve body (12) links to each other with boost pressure regulation valve (14) by pipeline, and the boost pressure regulation valve links to each other with the booster jar top through pressurized machine (13), establishes booster jar shell (8) in the booster jar outside.

2, low-pressure storing high-pressure transferring low-temperature storage tank is characterized in that above-described various valve, can partly or entirely adopt solenoid valve.