CN114504744A - Hydraulic pressure accumulator and constant pressure difference controller - Google Patents

Hydraulic pressure accumulator and constant pressure difference controller Download PDF

Info

Publication number
CN114504744A
CN114504744A CN202210149259.7A CN202210149259A CN114504744A CN 114504744 A CN114504744 A CN 114504744A CN 202210149259 A CN202210149259 A CN 202210149259A CN 114504744 A CN114504744 A CN 114504744A
Authority
CN
China
Prior art keywords
pressure
hydraulic
gas
liquid level
relief valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210149259.7A
Other languages
Chinese (zh)
Inventor
罗钢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202210149259.7A priority Critical patent/CN114504744A/en
Publication of CN114504744A publication Critical patent/CN114504744A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Pulmonology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Emergency Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

The invention relates to a hydraulic pressure accumulator and a constant pressure difference controller, wherein the hydraulic pressure accumulator comprises a U-shaped shell and hydraulic oil, two ends of the U-shaped shell are respectively a high-pressure end and a low-pressure end, and because the air pressure of the high-pressure end is greater than that of the low-pressure end, the liquid level of the high-pressure end is low and that of the low-pressure end is high in a balanced state. When the gas-liquid contact surface of the high-pressure end is larger, the hydraulic oil required by the low-pressure end higher than the high-pressure end is more. The pressure difference at two ends of the hydraulic pressure accumulator is kept unchanged by utilizing the action force generated by increasing the contact area to balance the gravity of the hydraulic oil at the liquid level difference part, and the hydraulic pressure accumulator is used as a core component to manufacture a constant pressure difference controller, and the pressure is controlled to be stable through hydraulic pressure.

Description

Hydraulic pressure accumulator and constant pressure difference controller
Technical Field
The invention relates to a hydraulic pressure storage device and a constant differential pressure controller, and belongs to the technical field of hydraulic control of air pressure.
Background
In industrial production or common life, the ambient pressure often cannot meet the production and life conditions or environments of people. For example, in a plateau area, the oxygen fraction in air is similar to that of a plain, but the air pressure is much lower than that of a plain. Affecting people's life in plateau, travel, sports, and even producing altitude reaction. The prior art is the inhalation of oxygen or the breathing of pressurized gases. The former has higher consumption of oxygen production process, while the latter has lower energy consumption, but the air pressure in the breathing mask is reduced in the inspiration process, so that the expired air can not be generated after inspiration, and the actual use process is inconvenient. How to realize that the air pressure in the breathing mask is unchanged after inspiration, the prior art has high realization cost or harsh preparation conditions, so the common scheme still adopts an oxygen cylinder for breathing.
Disclosure of Invention
The invention aims to realize the relative constancy of air pressure and solve the problems of constant pressurization and air storage in plateau area breathing air supply or daily industrial application.
In order to achieve the technical purpose, the invention provides a hydraulic pressure accumulator which comprises a U-shaped shell and hydraulic oil, wherein two ends of the U-shaped shell are respectively a high-pressure end and a low-pressure end, the air pressure of the high-pressure section is greater than that of the low-pressure end, the cross-sectional area of the high-pressure end is increased along with the reduction of the liquid level in a balance section under the condition that the U-shaped shell is loaded with the hydraulic oil with a set volume, the volume of the hydraulic oil with a newly increased hydraulic part at the low-pressure end is adjusted through the structure of the U-shaped shell, and the air pressure difference acting force of the liquid level at the high-pressure end is always equal to the acting force of the hydraulic oil with a part higher than that at the low-pressure end. The specific working principle is that when the air pressure at the left end and the air pressure at the right end of the U-shaped shell are the same, the liquid level is horizontal; when the air pressure at one end is higher than that at the other end, the liquid level at the high-pressure end is lowered, the liquid level at the low-pressure end is raised, and when the force is balanced, the liquid level keeps a new balanced state. The constant pressure difference principle adopted by the hydraulic pressure accumulator is that when the air pressure in the high-pressure end is higher than the low-pressure end and reaches a set air pressure difference, the liquid level enters the balance section, and when the air above the high-pressure end continues to increase and the original balance state is broken, the liquid level decreases and the gas space is increased. If the gas space is increased by the pure liquid level reduction, the hydraulic oil at the low-pressure end higher than the liquid level at the high-pressure end is more than the hydraulic oil at the original equilibrium state, so the cross-sectional area of the gas-liquid boundary at the high-pressure end is increased while the liquid level is reduced, the hydraulic oil newly added at the low-pressure end comprises an absolutely newly added part and a relatively newly added part, and the absolutely newly added part is hydraulic oil at the liquid level increasing part at the low-pressure end and is equal to hydraulic oil at the liquid level reducing part at the high-pressure end; compared with the original hydraulic oil at the low-pressure end of the newly added hydraulic oil system, the original hydraulic oil at the low-pressure end is correspondingly higher after the liquid level of the high-pressure end is reduced, and the volume of the hydraulic oil at the part is lower than the balance liquid level of the original high-pressure end. The volume of the hydraulic oil of the cross section of the newly added hydraulic part at the low-pressure end is adjusted through the U-shaped shell structure, namely the hydraulic oil of the newly added part is determined through the shell structure design. The air pressure difference is set to be a constant value, and the newly added volume is balanced corresponding to the newly added hydraulic oil along with the newly added cross section of the high-pressure end. The balance section of the high-pressure end, namely the liquid level, keeps the air pressure difference constant in the range of the section. The cross section above the balance section is not smaller than the cross section of the top of the balance section, the volume of the balance section at the high-pressure end is the maximum volume capable of storing the gas with the constant pressure difference, and the balance section can be used as an adjusting storage of the gas with the constant pressure difference when a hydraulic pressure storage device is used alone. The hydraulic oil includes water.
As an improvement of the hydraulic pressure accumulator, a shell of the high-pressure end balancing section adopts a breathing paper wall membrane which is permeable to gas and impermeable to liquid, when the liquid level fluctuates up and down in the balancing section, the permeable area of the gas is reduced and increased along with the up and down of the liquid level, so that the input gas in the balancing section is equal to the output gas, and when the input gas reduces the rise of the liquid level, part of the breathing paper wall membrane is separated, and the output of the gas is reduced; when the input gas increases the liquid level and falls, partial breathing paper wall membrane is released, and the gas output is increased. The balance sections can all adopt breathing paper wall membranes or are only provided with the breathing paper wall membranes in a vertical strip shape. The breathing paper wall membrane and the hydraulic oil are selected in consideration of the fact that the breathing paper wall membrane and the hydraulic oil cannot have adhesion. The breathing paper has the function of releasing redundant gas while playing a constant pressure difference, and the low-pressure end branch which has the same function as the breathing paper is also used for releasing redundant gas. The high-pressure end balancing section is provided with a plurality of low-pressure end branches, the air pressure value of the ports of the low-pressure end branches is the same as the air pressure of the ports of the low-pressure end branches, when the high-pressure end gas increases the liquid level and descends, the liquid level of the low-pressure end branches is equal to the liquid level of the low-pressure end branches, when the liquid level of the high-pressure end branches is lower than the junction of the low-pressure end branches and the high-pressure end branches, the low-pressure end branches cannot support the air pressure difference, hydraulic oil in the low-pressure end branches can flow into the high-pressure end branches and increase the liquid level, and the gas in the high-pressure end branches can overflow from the low-pressure end branches, so that the effects of releasing gas and stabilizing the air pressure are achieved. When the gas in the high-pressure end is reduced and the hydraulic oil liquid level in the high-pressure end covers the bottom of the low-pressure end branch, the height of the hydraulic oil in the low-pressure end branch is the same as the liquid level of the low-pressure end again. The balance principle is that when the liquid level crosses the junction downwards, the hydraulic oil in the branch of the low-pressure end is separated from the hydraulic oil in the high-pressure end, which is equal to the reduction of the hydraulic oil in the low-pressure end, the liquid level of the high-pressure end continuously drops, but the liquid level of the high-pressure end is increased and balanced again along with the re-inflow of the hydraulic oil under the action of gravity.
The invention provides a constant pressure difference controller by utilizing a hydraulic pressure accumulator, which comprises the hydraulic pressure accumulator, a compression air pump, a connector and a pressure relief valve, or comprises the pressure accumulator containing a breathing paper wall membrane liquid, the compression air pump and the connector. The connecting body is respectively provided with an air inlet, an air outlet and a working opening, and the air inlet is connected with a compressed air pump air pipe. When the constant pressure difference controller comprises a pressure release valve, the air outlet is connected with the pressure release valve, and the pressure release valve is connected with the high-pressure end of the hydraulic pressure accumulator; the constant pressure difference controller comprises a pressure accumulator containing the respiratory paper wallpaper film or an air outlet which is directly connected with the high pressure end of the pressure accumulator when the low pressure end is branched.
As an improvement of a pressure release valve in the constant pressure difference controller, a hollow piston is arranged in the pressure release valve, a pressure release groove is arranged on the side wall of the pressure release valve, the pressure release groove is located within the movable range of the hollow piston, and when the liquid level of hydraulic oil is located in a balance section, the pressure release groove is opened along with the descending of the hollow piston and gradually increased. The air between the hollow piston and the liquid level can be pumped and adjusted by a needle cylinder through hydraulic oil by utilizing a soft leather hose. When the air pressure at the other end of the hollow piston is greater than or equal to the set air pressure, the hollow piston begins to descend; when the initial air pressure of the air between the hollow piston and the liquid level is smaller than the set air pressure, the pressure relief groove still keeps a closed state along with the descending of the hollow piston in the descending process of the hollow piston, and after the air is compressed to the set air pressure difference, the pressure relief groove begins to be opened along with the descending of the hollow piston and the pressure relief outlet gradually becomes larger along with the continuous descending of the hollow piston. The ports of the pressure relief valves positioned at the upper end and the side end of the hollow piston are connected with an air outlet pipe, the air outlet is communicated with a pressure relief groove through a hollow structure in the middle of the hollow piston, the port at the lower end of the pressure relief valve is connected with a high-pressure end air pipe of the hydraulic pressure accumulator, although the pressure relief groove is communicated with the upper port of the pressure relief valve through the side end port, the upper port and the lower port of the pressure relief valve are the same, and the pressure relief groove is always isolated from the hollow piston.
The pressure release valve used as the constant pressure difference controller is further improved, a pressure release groove and a gas film are arranged on the inner side wall of the pressure release valve, an upper port of the pressure release valve is connected with a gas outlet gas pipe, the gas film seals a lower port of the pressure release valve, the gas film opening is communicated with a lower port of the pressure release valve, when the gas pressure of the upper port of the pressure release valve is smaller than a set gas pressure, the gas film is sealed to cover the pressure release opening of the pressure release groove in an expansion state, and the pressure release groove is gradually opened along with disappearance of the gas pressure difference between the upper end and the lower end of the pressure release valve and continuous increase of the gas at the upper end.
The air film used as the constant pressure difference controller is further improved, and is thicker and firmer at the sealing position of the pressure relief groove, so that the air film is kept soft and cannot protrude out of the pressure relief groove. The upper end section of the air film is preferably smaller than the lower end section, and the air film can be made of rubber if the air film is in a trapezoidal or conical structure.
As a further improvement of the hydraulic pressure accumulator or the constant differential pressure controller, a plurality of hydraulic pressure accumulators which are not provided with breathing paper wall membranes or low-pressure end branches can be connected in series, namely, only the first hydraulic pressure accumulator can be provided with the breathing paper wall membranes or the low-pressure end branches, and the subsequent hydraulic pressure accumulators which are connected in series can not be provided with the breathing paper wall membranes absolutely and can not be provided with the low-pressure end branches relatively. The hydraulic pressure accumulators connected in series subsequently are provided with branches at the low-pressure ends, and the liquid level of the high-pressure ends connected in series subsequently cannot be lower than the junction port of any branch at the low-pressure end when in use. When in series connection, the gas at the series connection part is pumped to ensure that all the hydraulic pressure accumulators in series connection can be simultaneously positioned at the balance section, thereby realizing the pressure difference balance in a grading way. If the equilibrium air pressure is 6N/cm higher than the ambient air pressure2) The air pressure difference set by a single hydraulic pressure accumulator is 3N/cm2Two identical hydraulic accumulators are connected in series, and the first high-pressure end is higher than the environment by 6N/cm2When in use, gas between the two series-connected hydraulic pressure accumulators is extracted or conveyed to enable the two series-connected hydraulic pressure accumulators to be positioned in the balance section, then the high-pressure end or the low-pressure end is covered, and the gas between the two series-connected hydraulic pressure accumulators is extracted or conveyed to enable the liquid level states of the two hydraulic pressure accumulators to be the same so as to achieve the maximum overlapping of the balance sections of the two hydraulic pressure accumulators; can also be at a pressure 3N/cm higher than the ambient pressure2The two hydraulic pressure accumulators are directly connected in series.
As another improvement of the constant pressure difference controller, the steady state power of the compression air pump is set to be that the liquid level of the hydraulic oil is positioned in the middle of the balance section, the power of the compression air pump increases compression along with the steady-state rise of the liquid level, and the power of the compression air pump decreases along with the steady-state fall of the liquid level. When the liquid level rises, the gas at the working port escapes, and the power of the compression gas pump is properly increased to offset the gas escape loss; on the contrary, when the liquid level rises, the gas input in the working port is indicated, and the power of the compression gas pump is properly reduced to counteract the overflow of the gas input. Specifically, the power increase and decrease control of the compression air pump can be realized by using the technical principle of the sliding rheostat in the prior art and other modes. If resistors are arranged on two sides of the liquid level, the liquid level is covered with electrolyte. When the working port has the use requirements of inputting and outputting gas, the gas transmission rate required by the input gas needs to be met when the power is increased along with the rise of the liquid level, the gas transmission and gas exchange rates required by the output gas need to be met when the power is reduced along with the fall of the liquid level, and the fluctuation is kept in the balance section, namely the requirements of inputting, outputting gas and exchanging gas are met.
As another improvement of the constant pressure difference controller, a working port on the connecting body is of a hollow nose plug structure, and the nose plug structure is preferably made of a silica gel material. The connecting body adopting the hollow nose plug structure can be directly worn by a user, and the structure of the hollow nose plug is kept to be closely attached to the inner wall of the nostril of the user.
Drawings
Fig. 1 is a schematic structural view of a hydraulic accumulator according to the present invention.
Fig. 2 is a schematic diagram of the constant differential pressure controller according to the present invention.
Fig. 3 is a schematic diagram of a structure in which two hydraulic accumulators of the present invention are connected in series.
Fig. 4 is a schematic structural diagram of the pressure relief valve including the gas film according to the present invention.
Fig. 5 is a schematic structural diagram of the constant differential pressure controller without the relief valve according to the present invention.
Fig. 6 is a schematic diagram of a constant differential pressure controller including a low-voltage side branch according to the present invention.
Detailed Description
An embodiment of the hydraulic accumulator according to the present invention will be described in detail with reference to fig. 1.
As shown in fig. 1, the hydraulic accumulator includes a U-shaped housing 1 and hydraulic oil 2. The high-pressure end 3 of the U-shaped shell 1 is set to have the air pressure of 10N/cm2The sectional area of the balance section of the high-pressure end 3 is 0.1cm from top to bottom2-0.3cm2The low pressure end 4 is the ambient pressure which is 7N/cm2The average cross-sectional area and the liquid surface cross-sectional area are both 10cm2The hydraulic oil 2 has a density of 0.9 grams per cubic centimeter (g/cm)3) The acceleration of gravity g is taken to be 0.01 per gram (N/g). The liquid level falls and enters the section of the balance section with the sectional area of 0.1cm2At high pressureThe liquid level at the end 3 is 10/3cm lower than the liquid level at the low-pressure end 4.
I.e. (10N/cm)2-7N/cm2)×0.1cm2＝0.9g/cm3×0.01N/g×10/3cm×10cm2。
The high-pressure end 3 continues to reduce the liquid level height and simultaneously increases the sectional area of the balance section of the high-pressure end 3 so as to keep the air pressure of the high-pressure end 3 and the low-pressure end 4 always at 10N/cm2And 7N/cm2Balance of (1). The liquid level of the high-pressure end 3 is reduced by 2000/609cm, and the cross section is increased to 0.2cm2，0.1cm2To 0.2cm2Has an average cross section of 0.15cm2(ii) a The liquid level at the low-pressure end 4 rises 30/609cm, and the average cross section area is 10cm2. The liquid level at the high-pressure end 3 is lower than the liquid level at the low-pressure end 4 by 20/3 cm.
I.e. (10N/cm)2-7N/cm2)×0.2cm2＝0.9g/cm3×0.01N/g×20/3cm×10cm2。
The transfer volume of the hydraulic oil is 2000/609cm multiplied by 0.15cm2＝30/609cm×10cm2
The liquid level of the high-pressure end 3 is continuously reduced by 400/123cm, and the cross section is increased to 0.3cm2，0.2cm2To 0.3cm2Has an average cross section of 0.25cm2(ii) a The liquid level at the low-pressure end 4 rises 10/123cm2Average cross-sectional area of 10cm2. The liquid level at the high pressure end 3 is lower than the liquid level at the low pressure end 4 by 30/3 cm.
I.e. (10N/cm)2-7N/cm2)×0.3cm2＝0.9g/cm3×0.01N/g×30/3cm×10cm2。
The transfer volume of the hydraulic oil is 400/123cm multiplied by 0.25cm2＝10/123cm2×10cm2
An embodiment of the constant differential pressure controller according to the present invention will be described in detail with reference to fig. 2.
As shown in fig. 2, the constant pressure difference controller includes a hydraulic pressure accumulator, a compression air pump 5, a connecting body 6, and a pressure relief valve 10. The hydraulic pressure accumulator comprises a U-shaped shell 1 and hydraulic oil 2, wherein the left side of the U-shaped shell 1 is a high-pressure end 3, and the right side of the U-shaped shell 1 is a low-pressure end 4, and the specific structure is the same as that of the embodiment shown in fig. 1. The connecting body 6 comprises an inlet and an outlet 7, an air outlet 8 and a working port 9, wherein the working port 9 adopts a pair of nosesThe plug has an outer shape structure and is made of soft silica gel. The pressure release valve 10 is provided with three connecting ports and a pressure release groove 12, a hollow piston 11 is arranged in the pressure release valve, the hollow piston 11 is made of light plastics, and the upper end and the lower end of the pressure release valve are piston bodies and the middle part of the pressure release valve is hollow. The air pressure at the upper end of the hollow piston 11 is 10N/cm less than that at the lower end2When the piston is used, the pressure relief groove 12 is blocked and closed by a piston body at the lower end of the hollow piston 11; when the air pressure at the upper end of the hollow piston 11 is greater than or equal to the air pressure at the lower end, the hollow piston 11 moves downwards to open the pressure relief groove 12, and after the air pressures at the upper end and the lower end of the hollow piston 11 are balanced, the hollow piston 11 stops moving. The pressure relief valve 10 may be horizontally disposed and may be filled with a lubricating fluid to reduce friction during piston movement.
An embodiment of the series connection of the hydraulic accumulators according to the present invention will be described in detail with reference to fig. 3.
As shown in fig. 3, the hydraulic accumulator comprises two hydraulic accumulators, and the low-pressure end 4 of the former hydraulic accumulator is connected with the high-pressure end 3 of the latter hydraulic accumulator through an air pipe. When the ambient air pressure is 7N/cm2A single hydraulic pressure accumulator balances 3N/cm2As shown in FIG. 3, the two hydraulic accumulators are both located at the top of the balance end, and the pressure at the high pressure end of the previous hydraulic accumulator is 13N/cm2The gas pressure between the two hydraulic pressure accumulators is 10N/cm2The air pressure of the low-pressure end of the latter hydraulic pressure accumulator is 7N/cm2。
An embodiment of the pressure relief valve including a gas film according to the present invention will be described in detail with reference to fig. 4.
As shown in fig. 4, the pressure relief valve 10 and the air film 13 are included, openings are arranged at the upper end and the lower end of the pressure relief valve 10, the upper end is used for connecting the air outlet 8, the lower end is used for connecting the high-pressure end 3, and the pressure relief groove 12 is arranged on the side edge of the middle part. The gas film 13 has a trapezoidal structure, the bottom of the gas film 13 is fixedly connected with the inner bottom of the pressure release valve 10, and when the gas pressure at the upper end of the gas film 13 is greater than or equal to the set gas pressure, the upper part of the gas film 13 is gradually pressed down along with the increase of the upper gas, so that the pressure release groove 12 is gradually opened. The air film 13 is made of rubber and is thicker at the pressure relief groove 12, so that the air film 13 is kept soft and cannot protrude out of the pressure relief groove 12.
An embodiment of the constant pressure difference controller without the pressure release valve according to the present invention will be described in detail with reference to fig. 5.
As shown in fig. 5, the constant differential pressure controller includes a hydraulic pressure accumulator including a breathing paper wall membrane, a compression air pump 5, and a connector 6. An air outlet 8 of the connecting body 6 is connected with the high-pressure end 3 of the hydraulic pressure accumulator, and an air inlet 7 is connected with an air pipe of the compression air pump 5. The balance section of the high-pressure end 3 is provided with a vertical breathing paper wall membrane, and the hydraulic oil 2 is difficult to attach to the breathing paper wall membrane. The side wall is provided with a resistor strip for adjusting the compression air pump 5, and the hydraulic oil 2 is internally mixed with electrolyte with a conductive function. The effective resistance strip passing into the circuit decreases and increases along with the fluctuation of the liquid level.
An embodiment of the constant voltage difference controller having a low voltage side branch according to the present invention will be described in detail with reference to fig. 6.
As shown in fig. 6, the constant pressure difference controller includes a hydraulic accumulator including a low pressure end branch 4-1, a compression air pump 5, and a connecting body 6. An air outlet 8 of the connecting body 6 is connected with the high-pressure end 3 of the hydraulic pressure accumulator, and an air inlet 7 is connected with an air pipe of the compression air pump 5. The balance section of the high-pressure end 3 is provided with a low-pressure end branch 4-1, and the pressure difference of the two ends is still kept constant at each height in the balance section.
The above is merely an example of the application of the present invention, and the scope of the present invention is not limited in any way. The technical scheme formed by equivalent transformation or equivalent replacement, such as the serial connection of the hydraulic accumulator and the cylinder type air storage bag with the similar function of the hydraulic accumulator, the replacement of hydraulic control into electric transmission control or light spring control, and the like, falls into the protection scope of the invention.

Claims (9)

1. The utility model provides a hydraulic pressure ware that stores up, includes U type casing (1), hydraulic oil (2), U type casing (1) both ends are high pressure end (3), low pressure end (4) respectively, high pressure end (3) atmospheric pressure is greater than low pressure end (4) atmospheric pressure, hydraulic oil includes water, its characterized in that: under U type casing (1) load the hydraulic oil (2) of setting for the volume, high-pressure end (3) increase the cross-sectional area along with the liquid level descends in balanced section, through U type casing (1) structural adjustment low pressure end (4) newly-increased hydraulic pressure part hydraulic oil (2) volume, realize that the atmospheric pressure difference effort of high-pressure end (3) liquid level equals all the time low-pressure end (4) exceeds partial hydraulic oil (2) effort, the volume of high-pressure end (3) balanced section can store the constant pressure difference gas volume for the biggest.
2. The hydraulic accumulator of claim 1, wherein: the U-shaped shell (1) balance section shell adopts a breathing paper wall membrane which is permeable to gas and impermeable to hydraulic oil (2), or the U-shaped shell high-pressure end (3) balance section is provided with a low-pressure end branch (4-1).
3. The utility model provides a constant differential pressure controller, includes compression air pump (5), connector (6), be equipped with air inlet (7), gas outlet (8), working hole (9) on connector (6), air inlet (7) are connected its characterized in that with compression air pump (5) trachea: the hydraulic pressure accumulator of claim 1, a pressure relief valve (10) connected to the gas outlet (8), and the high-pressure end (3) of the hydraulic pressure accumulator is connected to the pressure relief valve (10), or the high-pressure end (3) of the hydraulic pressure accumulator of claim 2 is connected to the gas outlet (8).
4. The constant differential pressure controller according to claim 3, wherein: be equipped with cavity piston (11), lateral wall in relief valve (10) and be equipped with pressure release groove (12), pressure release groove (12) are located cavity piston (11) home range, and when hydraulic oil (2) liquid level was located balanced section, increase and decrease and cavity piston (11) remove along with gas outlet (8) input gas, in order to control and adjust the opening of pressure release groove (12), pressure release valve (10) port that is located cavity piston (11) upper end and side all is connected with gas outlet (8) trachea, and gas outlet (8) communicate with each other with pressure release groove (12) through cavity piston (11) middle part hollow structure, pressure release valve (10) lower extreme port and hydraulic pressure store up the high-pressure end (3) trachea of depressor and be connected, there is cavity piston (11) wall all the time between pressure release groove (12) and pressure release valve (10) upper and lower port.
5. The constant differential pressure controller according to claim 3, wherein: the utility model discloses a relief valve, including relief valve (10), relief valve (10) inside wall, gas film (13), port and gas outlet (8) trachea are connected on relief valve (10), and gas film (13) seal relief valve (10) lower extreme opening and gas film (13) opening and relief valve (10) lower port communicate with each other, when relief valve (10) upper port atmospheric pressure was less than and sets for atmospheric pressure, gas film (13) inflation state was sealed down and is covered relief valve (12) pressure release mouth, and along with the disappearance of relief valve (10) upper and lower both ends atmospheric pressure difference and upper end gas continuously increases, relief valve (12) are opened gradually.
6. The constant differential pressure controller of claim 5, wherein: the gas film (13) is thick at the sealing position of the pressure relief groove (12), and the section of the upper end of the gas film (13) is preferably smaller than that of the lower end of the gas film.
7. The hydraulic accumulator of claim 1 or the constant differential pressure controller of claim 3, wherein: the hydraulic accumulator of claim 1, wherein a plurality of hydraulic accumulators are connected in series, and when connected in series, each hydraulic accumulator connected in series can be simultaneously in a balanced section by pumping gas at the position of the series, thereby achieving a pressure difference balance in a stepwise manner.
8. The constant differential pressure controller according to claim 3, wherein: the steady state power of the compression air pump (5) is set to be that the liquid level of the hydraulic oil (2) is positioned in the middle of the balance section, and the power of the compression air pump (5) is increased along with the rise of the liquid level compared with the steady state and is reduced along with the fall of the liquid level compared with the steady state.
9. The constant differential pressure controller according to claim 3, wherein: the working port (9) is of a hollow nose plug structure, and the nose plug structure is preferably made of a silica gel material.
CN202210149259.7A 2022-02-15 2022-02-15 Hydraulic pressure accumulator and constant pressure difference controller Withdrawn CN114504744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210149259.7A CN114504744A (en) 2022-02-15 2022-02-15 Hydraulic pressure accumulator and constant pressure difference controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210149259.7A CN114504744A (en) 2022-02-15 2022-02-15 Hydraulic pressure accumulator and constant pressure difference controller

Publications (1)

Publication Number Publication Date
CN114504744A true CN114504744A (en) 2022-05-17

Family

ID=81552587

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210149259.7A Withdrawn CN114504744A (en) 2022-02-15 2022-02-15 Hydraulic pressure accumulator and constant pressure difference controller

Country Status (1)

Country Link
CN (1) CN114504744A (en)

Similar Documents

Publication Publication Date Title
CN111271591A (en) Gas storage device
CN208595423U (en) A kind of pressure stabilizing air charging system
CN205388172U (en) One -way relief valve and contain battery of this relief valve
CN114504744A (en) Hydraulic pressure accumulator and constant pressure difference controller
CN111271592A (en) Gas storage device
CN203088339U (en) Pad body device with inner and outer double air bags capable of retracting and releasing air circularly
CN209075788U (en) A kind of modified form high flow capacity storage oxygen mask
CN207221644U (en) Portable film oxygen enriching apparatus of oxygen supply
CN114306967A (en) Plateau auxiliary breathing device
CN209572718U (en) Automatic flower-watering device
CN208348604U (en) A kind of self-operated type high pressure hydraulic actuator pressure regulator
CN207987875U (en) A kind of mechanical pneumatic peltate gate stable level device
CN210461829U (en) Pressure stabilizing director for gas pressure regulator
CN211113899U (en) Air pressure tank capable of adjusting pre-charging pressure
CN110559514B (en) Self-adjusting constant-speed reinfusion device and adjusting method for peripheral stem cells and marrow blood
CN203784393U (en) Pilot-operated type automatic fluid infusion breather valve
CN1746545A (en) Superpressure pneumatic pressure-release valve with adjusting gas source switch
CN2614959Y (en) Adjustable pressure tyre inflating connector
CN211501782U (en) Miniature constant pressure reducing device
CN216822505U (en) Internal pressure adjusting structure of multi-air-chamber inflatable product
CN114191677A (en) Man-machine interaction breathing oxygen generation all-in-one machine
CN201162245Y (en) Stabilizing compensation water supply facility with self-supercharging water supply
CN2523403Y (en) Automatic micro-resistant oxygen supplying/exhausting device for high pressure cabin
CN205659234U (en) But oxygen of automatic regulating valve door pillow
CN218064400U (en) Gas storage tank and oxygen supply equipment

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20220517