CN110185796A - The shell and method with low creep system of high external pressure or high internal pressure can be resisted - Google Patents

The shell and method with low creep system of high external pressure or high internal pressure can be resisted Download PDF

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Publication number
CN110185796A
CN110185796A CN201910442653.8A CN201910442653A CN110185796A CN 110185796 A CN110185796 A CN 110185796A CN 201910442653 A CN201910442653 A CN 201910442653A CN 110185796 A CN110185796 A CN 110185796A
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China
Prior art keywords
pressure
shell
piston
buffer
main casing
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CN201910442653.8A
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Chinese (zh)
Inventor
邢天宜
邢宇
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Tianjin Long Rui Datong Fluid Control System Co Ltd
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Tianjin Long Rui Datong Fluid Control System Co Ltd
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Application filed by Tianjin Long Rui Datong Fluid Control System Co Ltd filed Critical Tianjin Long Rui Datong Fluid Control System Co Ltd
Priority to CN201910442653.8A priority Critical patent/CN110185796A/en
Publication of CN110185796A publication Critical patent/CN110185796A/en
Priority to PCT/CN2020/089368 priority patent/WO2020238589A1/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J12/00—Pressure vessels in general
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/30—Sealing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/42—Multiple pistons

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

A kind of shell and method with low creep system that can resist high external pressure or high internal pressure, it is disposed with from main casing to low-pressure side and decomposes shell~M decomposition shell with main casing body concentric first, main casing and the first decomposition shell~M are decomposed in shell and are respectively formed a buffer cavity between every two adjacent decomposition shells, the first buffer cavity~M buffer cavity is sequentially formed with from high side to low side, first buffer cavity~M buffer cavity respectively passes through a pressure maintaining pipeline connection position can make main casing that the first buffer cavity~intracorporal liquid of M buffer chamber be discharged when pressure is big outside main casing, the first buffer cavity~M buffer chamber intracorporal liquid pressure buffer device is supplemented in pressure hour.The practical separate loading born of each layered shell of the present invention is exactly the 1/M of full payload, it is ensured that the low creep system for resisting high external pressure or high internal pressure shell material is run with security and stability.

Description

The shell and method with low creep system of high external pressure or high internal pressure can be resisted
Technical field
The present invention relates to a kind of High Pressure Shells.It is low compacted that having for high external pressure or high internal pressure can be resisted more particularly to one kind The shell and method of change system.
Background technique
Either in life still in the industry, no matter all there is useful shell and load high pressure carrier or low pressure carrier It is high pressure carrier or low pressure carrier, all shell may be made to subject great pressure.As depicted in figs. 1 and 2, C is high-voltage end, D It is low-pressure end, 1 is shell.No matter high-voltage end is located at the inside of shell 1 or external, when the pressure difference at C-terminal and the end D is sufficiently large When, only shell 1 bears entire pressure difference, and no matter how outstanding material has oneself yield limit, the creep of shell 1 Amount is improved with stepping up for pressure difference, once pressure difference will occur moment close to shell 1 described in its yield limit Drastic deformation and fail.This failure often results in destructive disaster in production activity.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of as the variation of pressure difference has adjust automatically shell institute The shell and method with low creep system that can resist high external pressure or high internal pressure of the pressure of receiving.
The technical scheme adopted by the invention is that: one kind can resist high external pressure or high internal pressure with low creep system Shell includes to be disposed with from the main casing to low-pressure side concentric with the main casing positioned on high-tension side main casing First decompose shell~M and decompose shell, the main casing and first decompose shell~M and decompose in shell per adjacent two It is respectively formed a buffer cavity between a decomposition shell, i.e., is sequentially formed with the first buffer cavity from high side to low side ~the M buffer cavity, the first buffer cavity~M buffer cavity respectively pass through a pressure maintaining pipeline connection position in institute Stating can make main casing that the first buffer cavity~intracorporal liquid of M buffer chamber be discharged when pressure is big outside main casing Body supplements the first buffer cavity~M buffer chamber intracorporal liquid pressure buffer device in pressure hour.
The pressure buffer device includes: pressure buffer main body, in the pressure buffer main body from the bottom to top successively Be formed with the first buffer cavity~M buffer cavity pass through respectively pressure maintaining pipeline it is corresponding be connected it is first living Chamber~M plunger shaft is filled in, respectively corresponds and is arranged in the first piston chamber~M plunger shaft and can be in high pressure source First piston~M piston and the one end for acting on first piston chamber~M plunger shaft axial movement where lower edge are corresponding It is connected to the first piston~M piston being located in the first piston chamber~M plunger shaft, the other end is located at the pressure and delays Rush First piston bar~M piston rod in the high pressure source on the outside of main body.
The first piston~M piston at the first piston chamber~M plunger shaft with the pressure buffer The first sealing ring is respectively arranged between main body.
The second sealing is respectively arranged between the First piston bar~M piston rod and the pressure buffer main body Circle.
The pressure buffer main body is cylindrical body or rectangular configuration, between the first piston chamber~M plunger shaft, institute It states between first piston~M piston and is arranged side by side between the First piston bar~M piston rod.
When the first decomposition shell~M, which decomposes shell, is located at the inside of the main casing, the main casing Outside is high pressure source, and the inside that the M decomposes shell is low pressure source, the high pressure source on the outside of the pressure buffer main body It is exactly the high pressure source on the outside of the main casing, the First piston bar~M piston rod is far from first piston~M piston That one end is located at the outside of pressure buffer main body；
When the first decomposition shell~M, which decomposes shell, is located at the outside of the main casing, the main casing Inside is high pressure source, and the outside that the M decomposes shell is low pressure source, and it is living that the pressure buffer main body is located at described first Stopper rod~M piston rod side is formed with the high-pressure chamber of built-in high pressure source, and the First piston bar~M piston rod is remote It is located in the high-pressure chamber from that one end of first piston~M piston, the high-pressure chamber passes through high-voltage power supply connecting line It is connected to the inside of the main casing.
The buffer chamber intracorporal pressure remote from the main casing is less than in first buffer cavity~M buffer cavity The opposite buffer chamber intracorporal pressure close from the main casing, thus in the First piston bar~M piston rod, with pressure The diameter of the small corresponding piston rod of buffer cavity of power is greater than piston rod corresponding with the buffer cavity that pressure is big Diameter.
Pressure difference in the first buffer cavity~M buffer cavity between each adjacent two buffer cavity are as follows: PIt is adjacent=PIt is high÷ M,
Wherein, M=PIt is high÷10×k；PIt is adjacentIt is the pressure difference and the first decomposition shell between two neighboring buffer cavity ~the M decomposes the actual pressure load that shell is born；PIt is highBe the pressure unit from maximum pressure source be Mpa；M is to decompose The quantity of shell；10 be constant, unit Mpa；K is safety factor, and value range: 0.5 < k < 1 most preferably takes k=0.7；Point The quantity M of solution shell takes the positive integer greater than calculated value；
Then have: M >=PIt is high/ m,
Wherein, m is the limiting pressure Mpa. that each decomposition shell should be born；
According to the quantity M for decomposing shell, the pressure that each buffer cavity should be set is obtained:
Pxi=PIt is adjacent× i=(PIt is high÷M)×i
Wherein: PIt is adjacent=PIt is high÷M；I is any one buffer cavity or any one decomposes the serial number of shell；PxiFor serial number For the pressure that buffer cavity of i should be set, unit Mpa；
By PIt is high×SIt is small=Pxi×SGreatlyObtain SIt is small=(Pxi×SGreatly)/PIt is high
Wherein, SIt is smallIt is the base area of that piston rod of serial number i；SGreatlyIt is the bottom surface face of that piston of serial number i Product.
The pressure buffer main body is cylindrical body or [shape structure is string between the first piston chamber~M plunger shaft Shape setting, the First piston bar~M piston rod correspond in that one end far from first piston~M piston, the latter plug Bar is located in previous piston.
When the first decomposition shell~M, which decomposes shell, is located at the inside of the main casing, the main casing Outside is high pressure source, and the inside that the M decomposes shell is low pressure source, the high pressure source on the outside of the pressure buffer main body It is exactly the high pressure source on the outside of the main casing, the M piston rod is located at pressure buffer main body far from that one end of M piston Outside；
When the first decomposition shell~M, which decomposes shell, is located at the outside of the main casing, the main casing Inside is high pressure source, and the outside that the M decomposes shell is low pressure source, and it is living that the pressure buffer main body is located at the M Stopper rod is formed with the high-pressure chamber of built-in high pressure source far from that one end of M piston, and the M piston rod is far from M piston That one end be located in the high-pressure chamber, the high-pressure chamber is connected to the interior of the main casing by high-voltage power supply connecting line Side.
The first piston~relationship between M piston and corresponding First piston bar~M piston rod is as follows:
S1=S2(M-1)/M
In formula, S1For rod areas, S2For piston area, M is piston rod number and piston rod number.
A kind of method with low creep system that can resist high external pressure or high internal pressure is to decompose shell using first simultaneously Body~M decomposes shell and decomposes the method that the gross pressure born replaces single housing to bear gross pressure.
The shell and method with low creep system that can resist high external pressure or high internal pressure of the invention has following special Point:
1, with the variation of total pressure difference, pressure difference can be prorated in each buffering sap cavity, so that each The pressure for buffering sap cavity also and then changes, and goes to balance the extraneous gross pressure from pressure source.The sum of the pressure of all buffering sap cavities Equal to total pressure difference, from high-voltage end to the pressure decline of low-pressure end adjacent buffer sap cavity two-by-two, the rule that they are arranged is equal difference Series.
2, each buffering sap cavity passes through the piston with big small end and is connected with maximum pressure source, the big end of piston It is buffering in sap cavity, for small end in maximum pressure source, the big end and small end of piston are respectively provided with " O " shape sealing ring, and each A piston can carry out both forward and reverse directions axial displacement along its axis.It is all small end bottom for the same piston big end base area The integral multiple of face area；Different pistons, big end base area and the ratio of small end base area are had nothing in common with each other, and ratio is closer 1 piston should be arranged in closer to maximum pressure source one end, that is, high-voltage end.
3, no matter how high total pressure is or how low, each layer decompose pressure that shell is born always can be proportionally This full payload is shared, therefore, the practical separate loading born of each layered shell is exactly the 1/M of full payload, it is ensured that resist high The low creep system of external pressure or high internal pressure shell material is run with security and stability.
Detailed description of the invention
Fig. 1 is the schematic diagram of housing structure of the resistance to outer high pressure of the prior art；
Fig. 2 is the schematic diagram of housing structure of the resistance to interior high pressure of the prior art；
Fig. 3 is the knot of the first example of the shell with low creep system that the present invention can resist high external pressure or high internal pressure Composition；
Fig. 4 is the knot that can resist the second example of the shell of the shell with low creep system of high external pressure or high internal pressure Composition；
Fig. 5 is the knot of the third example for the shell with low creep system that the present invention can resist high external pressure or high internal pressure Composition；
Fig. 6 is the knot of the 4th example of the shell with low creep system that the present invention can resist high external pressure or high internal pressure Composition.
In figure
1: main casing 2: pressure maintaining pipeline
3: 4: the first sealing ring of pressure buffer main body
5: the second sealing rings 6: high-pressure chamber
7: high-voltage power supply connecting line C: high pressure source
D: low pressure source
11,12,13 ... .1M-1,1M: first, which decomposes shell~M, decomposes shell
21,22,23 ... .2M-1,2M: the first buffer cavity~M buffer cavity
31,32,33 ... .3M-1,3M: first piston~M piston
41,42,43 ... .4M-1,4M: first piston chamber~M plunger shaft
51,52,53 ... .5M-1,5M: First piston bar~M piston rod
Specific embodiment
There is low creep to what one kind of the invention can resist high external pressure or high internal pressure below with reference to embodiment and attached drawing The shell of system is described in detail.
As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, it is of the invention can resist high external pressure or high internal pressure there is low creep system Shell, include to be disposed with and the main casing 1 positioned on high-tension side main casing 1 from the main casing 1 to low-pressure side Concentric first decompose shell~M decompose shell 11,12,13 ... .1M-1,1M, the main casing 1 and first decompose shell ~the M decompose shell 11,12,13 ... in .1M-1,1M per two adjacent decomposition shells between be respectively formed a buffering sap cavity Body, i.e., from high side to low side be sequentially formed with the first buffer cavity~M buffer cavity 21,22,23 ... .2M- 1,2M, the first buffer cavity~M buffer cavity 21,22,23 ... .2M-1,2M respectively pass through a pressure maintaining pipeline 2 Connection, which is located at outside the main casing 1, can make main casing 1 that the first buffer cavity~M buffer be discharged when pressure is big Cavity 21,22,23 ... the liquid in .2M-1,2M supplements the first buffer cavity~M buffer cavity in pressure hour 21,22,23 ... the pressure buffer device of the liquid in .2M-1,2M.
The pressure buffer device includes: pressure buffer main body 3, in the pressure buffer main body 3 from the bottom to top according to It is secondary be formed with the first buffer cavity~M buffer cavity 21,22,23 ... .2M-1,2M pass through pressure maintaining respectively First piston chamber~M plunger shaft that pipeline 2 is corresponding to be connected 41,42,43 ... .4M-1,4M are respectively corresponded and are arranged described First piston chamber~M plunger shaft 41,42,43 ... and can be under the action of high pressure source along the of place in .4M-1,4M One plunger shaft~M plunger shaft 41,42,43 ... the first piston of the axial movement of .4M-1,4M~M piston 31,32, 33 ... .3M-1,3M and one end be correspondingly connected be located at the first piston chamber~M plunger shaft 41,42,43, ... first piston~M piston 31 in .4M-1,4M, 32,33 ... .3M-1,3M, the other end are located at the pressure buffer master First piston bar~M piston rod 51 in the high pressure source in the outside of body 3,52,53 ... .5M-1,5M.
The first piston~M piston 31,32,33 ... .3M-1,3M are in the first piston chamber~M piston Chamber 41,42,43 ... the first sealing ring 4 is respectively arranged at .4M-1,4M between the pressure buffer main body 3.Described First piston bar~M piston rod 51,52,53 ... be respectively arranged between .5M-1,5M and the pressure buffer main body 3 Second sealing ring 5.
As shown in Figure 3, Figure 4, the pressure buffer main body 3 is cylindrical or rectangular configuration, the first piston chamber~ M plunger shaft 41,42,43 ... between .4M-1,4M, the first piston~M piston 31,32,33 ... .3M-1,3M Between and the First piston bar~M piston rod 51,52,53 ... be arranged side by side between .5M-1,5M.
As shown in figure 3, when described first decompose shell~M decompose shell 11,12,13 ... .1M-1,1M are located at institute When stating the inside of main casing 1, the outside of the main casing 1 is high pressure source C, and the inside that the M decomposes shell 1M is low pressure Power source D, the high pressure source in 3 outside of the pressure buffer main body are exactly the high pressure source C in 1 outside of main casing, and described first Piston rod~M piston rod 51,52,53 ... .5M-1,5M far from first piston~M piston 31,32,33 ... .3M-1, That one end of 3M is located at the outside of pressure buffer main body 3.
As shown in figure 4, when described first decompose shell~M decompose shell 11,12,13 ... .1M-1,1M are located at institute When stating the outside of main casing 1, the inside of the main casing 1 is high pressure source C, and the outside that the M decomposes shell 1M is low pressure Power source D, the pressure buffer main body 3 be located at the First piston bar~M piston rod 51,52,53 ... the one of .5M-1,5M Side is formed with the high-pressure chamber 6 of built-in high pressure source, the First piston bar~M piston rod 51,52,53 ... .5M-1, 5M far from first piston~M piston 31,32,33 ... that one end of .3M-1,3M are located in the high-pressure chamber 6, the height Pressure cavity 6 is connected to the inside of the main casing 1 by high-voltage power supply connecting line 7.
Fig. 3, the first buffer cavity~M buffer cavity shown in Fig. 4 21,22,23 ... from institute in .2M-1,2M It states the remote intracorporal pressure of buffer chamber of main casing 1 and is less than the opposite buffer chamber intracorporal pressure close from the main casing 1, from And the First piston bar~M piston rod 51,52,53 ... it is opposite with the buffer cavity that pressure is small in .5M-1,5M The diameter for the piston rod answered is less than the diameter of piston rod corresponding with the buffer cavity that pressure is big.
Fig. 3 of the present invention, one kind shown in Fig. 4 can resist the shell with low creep system of high external pressure or high internal pressure, The first buffer cavity~M buffer cavity 21,22,23 ... in .2M-1,2M each adjacent two buffer cavity it Between pressure difference are as follows: PIt is adjacent=PIt is high÷ M, and in order to guarantee the service life of decomposition shell, it not allow every decomposition shell actually all to carry Limiting pressure, so should consider necessary safety factor when design.
Wherein, M=PIt is high÷10×k；PIt is adjacentIt is the pressure difference and the first decomposition shell between two neighboring buffer cavity ~the M decompose shell 11,12,13 ... the actual pressure load that .1M-1,1M are born；PIt is highIt is the pressure from maximum pressure source Unit of force is Mpa；M is the quantity for decomposing shell；10 be constant, unit Mpa；K is safety factor, value range: 0.5 < k < 1, most preferably takes k=0.7；The quantity M for decomposing shell takes the positive integer greater than calculated value.Such as: calculated value either 2.1 or Person is 2.9 to take 3.
Then have: M >=PIt is high/ m,
Wherein, m is the limiting pressure Mpa. that each decomposition shell should be born.
Can be calculated by M >=P/m install the quantity M for decomposing shell, so as to reserve necessary peace Fill space.
According to the quantity M for decomposing shell, the pressure that each buffer cavity should be set is obtained:
Pxi=PIt is adjacent× i=(PIt is high÷M)×i
Wherein: PIt is adjacent=PIt is high÷M；I is any one buffer cavity or any one decomposes the serial number of shell；PxiFor serial number For the pressure that buffer cavity of i should be set, unit Mpa；
By PIt is high×SIt is small=Pxi×SGreatlyObtain SIt is small=(Pxi×SGreatly)/PIt is high
Wherein, SIt is smallIt is the base area of that piston rod of serial number i；SGreatlyIt is the bottom surface face of that piston of serial number i Product.
The pressure of buffer cavity is set still according to the method for the present invention, so that it may pressure difference reduced step by step, from And just can be reduced every grade and decompose the pressure load that shell is born, it can effectively extend the service life for decomposing shell.
It is to pass through reduction with regard to able person it can be seen that increasing the series (quantity for increasing cushion chamber and piston) for decomposing shell The load that shell is actually born is decomposed effectively to extend the low creep system for entirely resisting high external pressure or high internal pressure shell material Service life.
As shown in Figure 5, Figure 6, one kind of the invention can resist the shell with low creep system of high external pressure or high internal pressure Body, the pressure buffer main body 3 be cylinder or [shape structure, the first piston chamber~M plunger shaft 41,42,43, ... be string shape setting between .4M-1,4M, the First piston bar~M piston rod 51,52,53 ... .5M-1,5M are corresponding Far from first piston~M piston 31,32,33 ... in that one end of .3M-1,3M, the latter stopper rod 51,52,53, ... .5M-1,5M be located at previous piston 31,32,33 ... in .3M-1,3M.
As shown in figure 5, when described first decompose shell~M decompose shell 11,12,13 ... .1M-1,1M are located at institute When stating the inside of main casing 1, the outside of the main casing 1 is high pressure source C, and the inside that the M decomposes shell 1M is low pressure Power source D, the high pressure source in 3 outside of pressure buffer main body are exactly the high pressure source C, the M in 1 outside of main casing living Stopper rod 5M is located at the outside of pressure buffer main body 3 far from that one end of M piston 3M；
As shown in fig. 6, when described first decompose shell~M decompose shell 11,12,13 ... .1M-1,1M are located at institute When stating the outside of main casing 1, the inside of the main casing 1 is high pressure source C, and the outside that the M decomposes shell 1M is low pressure Power source D, the pressure buffer main body 3 are located at the M piston rod 5M and are formed with built-in high pressure far from that one end of M piston 3M The high-pressure chamber 6 in power source, the M piston rod 5M is located in the high-pressure chamber 6 far from that one end of M piston 3M, described High-pressure chamber 6 is connected to the inside of the main casing 1 by high-voltage power supply connecting line 7.
Fig. 3 of the present invention, one kind shown in Fig. 4 can resist the shell with low creep system of high external pressure or high internal pressure, The effect that the practical load born of the main casing 1 is come extends the creep system for entirely resisting high external pressure or high internal pressure shell material Service life.
Fig. 3 of the present invention, one kind shown in Fig. 4 can resist the shell with low creep system of high external pressure or high internal pressure In, the first piston~M piston (31,32,33 ... .3M-1,3M) with corresponding First piston bar~M piston rod (51,52,53 ... .5M-1,5M) between relationship it is as follows:
S1=S2(M-1)/M
In formula, S1For rod areas, S2For piston area, M is piston rod number and piston rod number.
In short, no matter always one kind of the invention can resist the shell with low creep system of high external pressure or high internal pressure, Pressure PIt is highHave much, is only subjected only to gross pressure P for each decomposition shellIt is high1/M.To have the low creep of shell Property.
The method with low creep system that can resist high external pressure or high internal pressure of the invention is to use first point simultaneously Solve shell~M decompose shell 11,12,13 ... .1M-1,1M decompose the gross pressure born and single housing are replaced to bear gross pressure Method.

Claims (12)

  1. It include positioned on high-tension side main casing 1. one kind can resist the shell with low creep system of high external pressure or high internal pressure Body (1), which is characterized in that be disposed with first point concentric with the main casing (1) from the main casing (1) to low-pressure side Solve shell~M decompose shell (11,12,13 ... .1M-1,1M), the main casing (1) and first is decomposed shell~M and is divided Solution shell (11,12,13 ... .1M-1,1M) in per a buffer cavity is respectively formed between two adjacent decomposition shells, i.e., From high side to low side be sequentially formed with the first buffer cavity~M buffer cavity (21,22,23 ... .2M-1, 2M), the first buffer cavity~M buffer cavity (21,22,23 ... .2M-1,2M) respectively pass through a pressure maintaining pipeline (2) connection can make main casing (1) that the first buffer cavity~the be discharged when pressure is big positioned at the main casing (1) outside M buffer cavity (21,22,23 ... .2M-1,2M) in liquid, it is slow in pressure hour supplement the first buffer cavity~M Fliud flushing cavity (21,22,23 ... .2M-1,2M) in liquid pressure buffer device.
  2. 2. the shell with low creep system according to claim 1 that high external pressure or high internal pressure can be resisted, feature Be, the pressure buffer device includes: pressure buffer main body (3), in the pressure buffer main body (3) from the bottom to top according to It is secondary be formed with the first buffer cavity~M buffer cavity (21,22,23 ... .2M-1,2M) pass through guarantor respectively First piston chamber~M plunger shaft that pressure pipe road (2) is corresponding to be connected (41,42,43 ... .4M-1,4M), respectively correspond setting The first piston chamber~M plunger shaft (41,42,43 ... .4M-1,4M) in and can under the action of high pressure source edge Place first piston chamber~M plunger shaft (41,42,43 ... .4M-1,4M) axial movement first piston~M it is living Plug (31,32,33 ... .3M-1,3M) and one end be correspondingly connected be located at the first piston chamber~M plunger shaft (41, 42,43 ... .4M-1,4M) in first piston~M piston (31,32,33 ... .3M-1,3M), the other end be located at it is described In high pressure source on the outside of pressure buffer main body (3) First piston bar~M piston rod (51,52,53 ... .5M-1,5M).
  3. 3. the shell with low creep system according to claim 2 that high external pressure or high internal pressure can be resisted, feature Be, the first piston~M piston (31,32,33 ... .3M-1,3M) in the first piston chamber~M plunger shaft (41,42,43 ... .4M-1,4M) at be respectively arranged with the first sealing ring (4) between the pressure buffer main body (3).
  4. 4. the shell with low creep system according to claim 2 that high external pressure or high internal pressure can be resisted, feature Be, the First piston bar~M piston rod (51,52,53 ... .5M-1,5M) with the pressure buffer main body (3) Between be respectively arranged with the second sealing ring (5).
  5. 5. the shell with low creep system according to claim 2 that high external pressure or high internal pressure can be resisted, feature Be, the pressure buffer main body (3) is cylindrical body or rectangular configuration, the first piston chamber~M plunger shaft (41,42, 43 ... .4M-1,4M) between, the first piston~M piston (31,32,33 ... .3M-1,3M) between and described One piston rod~M piston rod (51,52,53 ... .5M-1,5M) between be arranged side by side.
  6. 6. the shell with low creep system according to claim 5 that high external pressure or high internal pressure can be resisted, feature Be, when described first decompose shell~M decompose shell (11,12,13 ... .1M-1,1M) be located at the main casing (1) Inside when, the outside of the main casing (1) is high pressure source (C), and the inside that the M decomposes shell (1M) is low pressure source (D), the high pressure source on the outside of the pressure buffer main body (3) is exactly the high pressure source (C) on the outside of the main casing (1), described First piston bar~M piston rod (51,52,53 ... .5M-1,5M) far from first piston~M piston (31,32, 33 ... .3M-1,3M) that one end be located at the outside of pressure buffer main body (3)；
    When described first decompose shell~M decompose shell (11,12,13 ... .1M-1,1M) be located at the main casing (1) Outside when, the inside of the main casing (1) is high pressure source (C), and the outside that the M decomposes shell (1M) is low pressure source (D), the pressure buffer main body (3) be located at the First piston bar~M piston rod (51,52,53 ... .5M-1,5M) Side is formed with the high-pressure chamber (6) of built-in high pressure source, the First piston bar~M piston rod (51,52,53, ... .5M-1,5M) far from first piston~M piston (31,32,33 ... .3M-1,3M) that one end be located at the high pressure chest In body (6), the high-pressure chamber (6) is connected to the inside of the main casing (1) by high-voltage power supply connecting line (7).
  7. 7. the shell with low creep system according to claim 5 that high external pressure or high internal pressure can be resisted, feature Be, the first buffer cavity~M buffer cavity (21,22,23 ... .2M-1,2M) in it is remote from the main casing (1) The intracorporal pressure of buffer chamber is less than the opposite buffer chamber intracorporal pressure close from the main casing (1), thus described the One piston rod~M piston rod (51,52,53 ... .5M-1,5M) in, piston corresponding with the buffer cavity that pressure is small The diameter of bar is greater than the diameter of piston rod corresponding with the buffer cavity that pressure is big.
  8. 8. the shell with low creep system according to claim 5 that high external pressure or high internal pressure can be resisted, feature Be, the first buffer cavity~M buffer cavity (21,22,23 ... .2M-1,2M) in each adjacent two buffering Pressure difference between sap cavity body are as follows: PIt is adjacent=PIt is high÷ M,
    Wherein, M=PIt is high÷10×k；PIt is adjacentIt is the pressure difference between two neighboring buffer cavity and the first decomposition shell~the M decompose shell (11,12,13 ... .1M-1,1M) the actual pressure load born；PIt is highIt is the pressure from maximum pressure source Unit is Mpa；M is the quantity for decomposing shell；10 be constant, unit Mpa；K is safety factor, value range: 0.5 < k < 1, most preferably take k=0.7；The quantity M for decomposing shell takes the positive integer greater than calculated value；
    Then have: M >=PIt is high/ m,
    Wherein, m is the limiting pressure Mpa. that each decomposition shell should be born；
    According to the quantity M for decomposing shell, the pressure that each buffer cavity should be set is obtained:
    Pxi=PIt is adjacent× i=(PIt is high÷M)×i
    Wherein: PIt is adjacent=PIt is high÷M；I is any one buffer cavity or any one decomposes the serial number of shell；PxiFor serial number i The pressure that should set of that buffer cavity, unit Mpa；
    By PIt is high×SIt is small=Pxi×SGreatlyObtain SIt is small=(Pxi×SGreatly)/PIt is high
    Wherein, SIt is smallIt is the base area of that piston rod of serial number i；SGreatlyIt is the base area of that piston of serial number i.
  9. 9. the shell with low creep system according to claim 2 that high external pressure or high internal pressure can be resisted, feature Be, the pressure buffer main body (3) be cylindrical body or [shape structure, the first piston chamber~M plunger shaft (41,42, 43 ... .4M-1,4M) between for string shape setting, the First piston bar~M piston rod (51,52,53 ... .5M-1,5M) It is corresponding far from first piston~M piston (31,32,33 ... .3M-1,3M) that one end in, the latter stopper rod (51,52, 53 ... .5M-1,5M) be located at previous piston (31,32,33 ... .3M-1) in.
  10. 10. the shell with low creep system according to claim 9 that high external pressure or high internal pressure can be resisted, feature Be, when described first decompose shell~M decompose shell (11,12,13 ... .1M-1,1M) be located at the main casing (1) Inside when, the outside of the main casing (1) is high pressure source (C), and the inside that the M decomposes shell (1M) is low pressure source (D), the high pressure source on the outside of the pressure buffer main body (3) is exactly the high pressure source (C) on the outside of the main casing (1), described M piston rod (5M) is located at the outside of pressure buffer main body (3) far from that one end of M piston (3M)；
    When described first decompose shell~M decompose shell (11,12,13 ... .1M-1,1M) be located at the main casing (1) Outside when, the inside of the main casing (1) is high pressure source (C), and the outside that the M decomposes shell (1M) is low pressure source (D), that one end that the pressure buffer main body (3) is located at the M piston rod (5M) separate M piston (3M) is formed with built-in The high-pressure chamber (6) of high pressure source, the M piston rod (5M) are located at the high pressure chest far from that one end of M piston (3M) In body (6), the high-pressure chamber (6) is connected to the inside of the main casing (1) by high-voltage power supply connecting line (7).
  11. 11. the shell with low creep system according to claim 9 that high external pressure or high internal pressure can be resisted, feature Be, the first piston~M piston (31,32,33 ... .3M-1,3M) with corresponding First piston bar~M piston rod (51,52,53 ... .5M-1,5M) between relationship it is as follows:
    S1=S2(M-1)/M
    In formula, S1For rod areas, S2For piston area, M is piston rod number and piston rod number.
  12. 12. the method with low creep system that one kind can resist high external pressure or high internal pressure, which is characterized in that be to use simultaneously First decomposition shell~M decompose shell (11,12,13 ... .1M-1,1M) decompose the gross pressure born and held instead of single housing By the method for gross pressure.
CN201910442653.8A 2019-05-25 2019-05-25 The shell and method with low creep system of high external pressure or high internal pressure can be resisted Pending CN110185796A (en)

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PCT/CN2020/089368 WO2020238589A1 (en) 2019-05-25 2020-05-09 Housing capable of resisting high external pressure or high internal pressure and having low creep system, and method

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CN104265907A (en) * 2014-10-15 2015-01-07 邢宇 Convection cooling of double mechanical sealing medium side friction pair
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