CN112178441A - Hydraulic gas buffer device and gas chamber with same - Google Patents
Hydraulic gas buffer device and gas chamber with same Download PDFInfo
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- CN112178441A CN112178441A CN202011194340.4A CN202011194340A CN112178441A CN 112178441 A CN112178441 A CN 112178441A CN 202011194340 A CN202011194340 A CN 202011194340A CN 112178441 A CN112178441 A CN 112178441A
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- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000003139 buffering effect Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17B—GAS-HOLDERS OF VARIABLE CAPACITY
- F17B1/00—Gas-holders of variable capacity
- F17B1/24—Gas-holders of variable capacity of dry type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17B—GAS-HOLDERS OF VARIABLE CAPACITY
- F17B1/00—Gas-holders of variable capacity
- F17B1/02—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17B—GAS-HOLDERS OF VARIABLE CAPACITY
- F17B1/00—Gas-holders of variable capacity
- F17B1/02—Details
- F17B1/14—Safety devices, e.g. prevention of excess pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention relates to a hydraulic gas buffering device and a gas chamber with the same, and belongs to the field of gas chambers. The hydraulic mechanism in the hydraulic gas buffer device mainly comprises a hydraulic cylinder and a piston column, wherein the piston end of the piston column extends into the hydraulic cylinder, the cylinder jacking end of the piston column is positioned outside the hydraulic cylinder, and a cavity formed by the piston end of the piston column and the hydraulic cylinder is filled with hydraulic liquid; the pneumatic mechanism mainly comprises a cylinder barrel and a cylinder piston, wherein the cylinder piston is arranged in the cylinder barrel and correspondingly divides the cylinder barrel into a hydraulic cavity and a pneumatic cavity, hydraulic liquid is filled in the hydraulic cavity, compressed gas is filled in the pneumatic cavity, and the hydraulic cavity of the cylinder barrel is communicated with the inner cavity of the hydraulic barrel through a communicating pipe. The hydraulic gas buffering device is arranged at the bottom of the gas chamber, so that the problem of impact on the bottom when a piston of the gas chamber falls to the bottom is solved, the piston is protected, and meanwhile, the effective stroke of the piston in operation is increased.
Description
Technical Field
The invention belongs to the field of gas cabinets, and particularly relates to a hydraulic gas buffering device and a gas cabinet with the same.
Background
The rubber membrane sealed gas chamber has the following characteristics: firstly, the piston runs fast, usually 5m/min, even more than 6m/min, so that the piston can adapt to the occasions with large throughput, which is difficult to achieve by a thin oil sealed gas tank. Secondly, it relies on the rubber membrane sealed, need not liquid, does not need water even more, is real dry-type gas holder, is particularly useful for the northern area. Thirdly, the dust content of the gas tank is not as strict as that of a thin oil tank. Fourthly, the gas tank bears higher working conditions than a thin oil tank; under the same condition, the gas holder can save a part of energy, and is beneficial to environmental protection and energy conservation.
The gas chamber piston is the heart of the gas chamber, in order to avoid collision between the piston and the bottom plate, the situation after the traditional rubber membrane gas chamber piston falls is shown in figure 1, and the traditional gas chamber piston falls adopts a mode of stopping gas outlet in advance, reducing speed and slowly falling to the ground. In detail, when the gas holder piston descends to about 10% of the full stroke, the gas inlet and outlet valve is closed, and the gas holder piston is stopped at about 10% of the full stroke position. When air inlet is needed, the inlet and outlet valves are opened. If the piston needs to land, the descending speed of the piston is strictly controlled, so that the piston of the gas holder slowly descends to the bottom plate. When the piston falls to the bottom, the piston plate of the traditional gas chamber falls to the upper side of the arch plate.
In addition, the piston plate of some traditional rubber membrane sealed gas chambers has no framework and is a flexible plate, and the running speed of the piston of the gas chamber is very fast and can exceed 5m/min, and under the fast running speed, if no corresponding protection measures are provided, the piston plate is possibly damaged when the piston falls to the ground. The piston arch of the traditional one-section gas holder is not a soft leather arch, but the piston slowly descends according to the requirement of the two-section gas holder, and the purpose is to prevent the piston of the gas holder from rapidly falling to the bottom.
The volume is particularly controlled in order to protect the gas holder. At present, the measure is irretrievable for blast furnace gas chambers and coke oven gas chambers, the gas chambers are sealed according to the normal capacity of thin oil from the chamber volume, at least 15% of strokes of the gas chambers can not be used/dare to use for ensuring the safety of the rubber mold gas chambers, and the rubber film gas chambers have very small height and diameter due to the structure, the piston stroke is originally not high, 15% of strokes can not be used, and the great waste can be caused. Adding a safety volume on this basis, 25% of the travel is unusable, all the while.
The "minimum reserve should not be less than 20%" specified in the industry code means "the space reserved when preparing for a long-term shutdown after the piston bottom fall". The 20% space is mainly used for preventing weather change, the volume is reduced after the temperature of gas in the gas chamber is reduced, and the piston is reduced to form negative pressure at the lower part of the piston. However, when the piston is in normal operation, the piston is expected to operate in the whole stroke range, and the gas tank has larger adjusting capacity. Only when the piston needs to be overhauled by falling to the bottom, the space with 20 percent of residue is reserved; the "20% of the remaining space" is not gas. If the cabinet is completely stopped, the '20% of residual space' is not needed any more, and the lower part of the piston is opened to be communicated with the atmosphere.
At present, no matter which gas chamber is used, a piston bottom-falling buffer device is not considered at the lower part of a piston or a piston bottom-falling bracket of the gas chamber, and if the piston directly falls at a normal running speed, the piston can completely damage the piston of the gas chamber due to the impact with the bottom.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a hydraulic gas buffer device and a gas chamber with the same, in which a piston of the gas chamber can directly fall to a top end surface of a lower piston-falling bracket through the buffer device, so as to not only protect the safety of the piston during a working stroke, but also increase the usable stroke of the piston of the gas chamber.
In order to achieve the purpose, the invention provides the following technical scheme:
a hydraulic gas buffer device comprises a gas pressure mechanism, a hydraulic mechanism and a communicating pipe; the hydraulic mechanism mainly comprises a hydraulic cylinder and a piston column, wherein the piston end of the piston column extends into the hydraulic cylinder, the cylinder jacking end of the piston column is positioned outside the hydraulic cylinder, and a cavity formed by the piston end of the piston column and the hydraulic cylinder is filled with hydraulic liquid; the pneumatic mechanism mainly comprises a cylinder barrel and a cylinder piston, wherein the cylinder piston is arranged in the cylinder barrel and correspondingly divides the cylinder barrel into a hydraulic cavity and a pneumatic cavity, hydraulic liquid is filled in the hydraulic cavity, compressed gas is filled in the pneumatic cavity, and the hydraulic cavity of the cylinder barrel is communicated with the inner cavity of the hydraulic barrel through a communicating pipe.
Furthermore, a valve is arranged at the joint of the communicating pipe and the hydraulic cavity of the cylinder barrel, and a valve is also arranged at the joint of the communicating pipe and the inner cavity of the hydraulic barrel.
Furthermore, a liquid discharge valve is arranged on a hydraulic cavity of the cylinder barrel, and a liquid discharge valve is also arranged on an inner cavity of the hydraulic barrel.
Further, an air cylinder sealing plate is arranged at the end of the air pressure cavity of the air cylinder barrel, and an air release valve is arranged on the air cylinder sealing plate.
A gas holder comprises the hydraulic gas buffer device, wherein a hydraulic mechanism is arranged in a gas holder barrel, the end surface of the top pressing end of a piston column barrel of the hydraulic mechanism corresponds to the bottom surface of a fixed configuration of a piston, and a pneumatic mechanism is arranged outside the gas holder barrel through a communicating pipe penetrating through the gas holder barrel; the initial state of the hydraulic gas buffer device is as follows: the hydraulic fluid in the hydraulic mechanism and the hydraulic fluid in the pneumatic mechanism are in a balanced state, and the gas pressure in the gas pressure cavity in the pneumatic mechanism is equal to the gas pressure below the piston of the gas holder.
Furthermore, the hydraulic gas buffer device is provided with a plurality of groups which are uniformly arranged around the circumference of the cylinder body of the gas chamber.
Further, the top end face of the cylinder top end of the piston column of the hydraulic mechanism is higher than the top end face of the piston bottom support in an initial state, and after the piston column of the hydraulic mechanism is pressed down by the gas chamber piston, the top end face of the cylinder top end of the piston column is not higher than the top end face of the piston bottom support.
The invention has the beneficial effects that:
(1) the hydraulic gas buffer device solves the problem of impact on the bottom when the piston of the gas chamber falls to the bottom, so that a 10-15% safety stroke is not required to be reserved when the piston descends. In the process of the piston falling to the bottom, due to the protection of the hydraulic gas buffer device, the impact of the piston on the bottom of the gas chamber is avoided, the piston is protected, the operation adaptability of the piston and the service life of the gas chamber are improved, meanwhile, the effective stroke of the piston in operation is increased, and the service capacity of the gas chamber is enlarged.
(2) The hydraulic gas buffer device and the piston bottom-falling bracket of the gas chamber are interdependent, and when the impulse is reduced, the piston bottom-falling bracket bears the static load of the gas chamber piston immediately, so that the functions are organically combined on the basis of function separation.
(3) In the hydraulic gas buffering device, the communicating pipe penetrates through the inside and the outside of the gas chamber cylinder body, and the gas pressure mechanism arranged outside the gas chamber cylinder body can be flexibly arranged. The whole device is simple in composition and low in cost.
(4) The scheme is not only suitable for the coal gas cabinet sealed by the rubber membrane, but also can be used for other sealing forms of coal gas cabinets. The gas chamber sealed by the rubber film comprises a one-section type gas chamber sealed by the rubber film and a two-section type gas chamber sealed by the rubber film.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a conventional rubber membrane sealed gas chamber;
FIG. 2 is a schematic view of a rubber diaphragm sealed gas chamber with a hydraulic gas cushion device (piston not in a bottom-falling state);
FIG. 3 is an enlarged view of section I of FIG. 2;
FIG. 4 is a schematic view of a plurality of groups of hydraulic gas cushioning devices arranged circumferentially around a cabinet body;
FIG. 5 is a schematic view of a rubber diaphragm sealed gas chamber with a hydraulic gas cushion (piston down state);
fig. 6 is an enlarged view of section ii of fig. 5.
Reference numerals:
the device comprises a pneumatic mechanism 1, a hydraulic mechanism 2, a communicating pipe 3, a valve 4a, a valve 4b, a liquid discharge valve 5a, a liquid discharge valve 5b, a cylinder sealing plate 6, an emptying valve 7, a gas tank cylinder 8, a piston fixing arrangement 9, a gas tank piston 10, a piston bottom-falling support 11 and a gas tank inlet and outlet pipe 12;
in the hydraulic mechanism: a hydraulic cylinder 201, a piston column 202 and an inner cavity A;
in the pneumatic mechanism: the device comprises a cylinder barrel 101, a cylinder piston 102, a hydraulic cavity B and a pneumatic cavity C;
gas pressure P1 below the gas holder piston, gas pressure P2 in the gas pressure chamber.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 2 to 6, the hydraulic gas buffering device (see fig. 3 and 6 for details) includes a pneumatic mechanism 1, a hydraulic mechanism 2, and a communicating pipe 3; the hydraulic mechanism 2 mainly comprises a hydraulic cylinder 201 and a piston column 202, wherein the piston end of the piston column 202 extends into the hydraulic cylinder 201, the cylinder jacking end of the piston column 202 is positioned outside the hydraulic cylinder 201, and a cavity A formed by the piston end of the piston column 202 and the hydraulic cylinder is filled with hydraulic liquid; the air pressure mechanism 1 mainly comprises a cylinder barrel 101 and a cylinder piston 102, wherein the cylinder piston 102 is arranged in the cylinder barrel 101 and correspondingly divides the cylinder barrel 101 into a hydraulic cavity B and an air pressure cavity C, hydraulic liquid is filled in the hydraulic cavity B, compressed gas is filled in the air pressure cavity C, and the hydraulic cavity B of the cylinder barrel 101 is communicated with an inner cavity A of the hydraulic barrel 201 through a communicating pipe 3.
Specifically, a valve 4B is arranged at the joint of the communicating pipe 3 and the hydraulic chamber B of the cylinder barrel 101, and a valve 4a is arranged at the joint of the communicating pipe 3 and the inner chamber a of the hydraulic barrel 201. A liquid discharge valve 5B is arranged on the hydraulic cavity B of the cylinder barrel 101, and a liquid discharge valve 5a is arranged on the inner cavity A of the hydraulic barrel 201. The end C of the air pressure cavity of the cylinder barrel 101 is provided with a cylinder sealing plate 6, and the cylinder sealing plate 6 is provided with an air release valve 7.
A gas holder with a hydraulic gas buffer device, as shown in fig. 2, 4 and 5. The gas tank is additionally provided with the hydraulic gas buffer device on the basis of the conventional gas tank. The conventional gas chamber can be a gas chamber sealed by a rubber film, and can also be a gas chamber in other sealing forms, so that the structure of the gas chamber is the prior art, and the description is omitted here. The hydraulic gas buffer device is arranged on the conventional gas chamber in the following specific form: the hydraulic mechanism 2 is arranged in the cylinder body 8 of the gas holder, the end surface of the cylinder top pressure end of the piston column 202 of the hydraulic mechanism 2 corresponds to the bottom surface of the piston fixing arrangement 9, and the pneumatic mechanism 1 is arranged outside the cylinder body 8 of the gas holder through a communicating pipe 3 penetrating through the cylinder body 8 of the gas holder. The initial state of the hydraulic gas buffer device should satisfy: the hydraulic fluid in the hydraulic mechanism 2 and the hydraulic fluid in the pneumatic mechanism 1 are in a balanced state, that is, the piston ends of the cylinder piston 102 in the pneumatic mechanism 1 and the piston column 202 in the hydraulic mechanism 2 are balanced; the gas pressure P2 in the gas pressure cavity of the gas pressure mechanism 1 is equal to the gas pressure P1 below the gas holder piston 10.
Preferably, the hydraulic gas buffer devices are provided with a plurality of groups (not less than 4 groups), and the groups of hydraulic gas buffer devices are uniformly arranged around the circumference of the gas holder barrel, as shown in fig. 4.
When the gas tank is arranged, the cylinder top pressure end face of the piston column 202 of the hydraulic mechanism 2 is higher than the top end face of the piston bottom falling bracket 11 of the gas tank in an initial state, and after the piston column 202 of the hydraulic mechanism 2 is pressed down by the piston of the gas tank, the cylinder top pressure end face of the piston column 202 is not higher than the top end face of the piston bottom falling bracket 11. When the gas chamber piston 10 moves downwards, most of impulse force is eliminated/subtracted by means of the hydraulic gas buffering device, after the impulse force is subtracted, the gas chamber piston 10 can fall on the piston bottom falling support 11, at the moment, the emptying valve 7 is opened to release pressure, and safety can be guaranteed doubly.
When the gas holder piston does not fall on/off the piston bottom bracket 11, as shown in fig. 2 to 4, the liquid in the inner chamber a and the liquid in the hydraulic chamber B of the hydraulic gas buffer device at the bottom of the gas holder are in a balanced state, i.e. the piston columns 202 and the cylinder piston 102 at the two sides are balanced. The gas pressure P1 below the gas chamber piston is equal to the gas pressure P2 in the gas pressure chamber.
In the process that the piston falls to the piston bottom falling bracket 11, as shown in fig. 2, 3, 5 and 6, the gas holder piston 10 first falls to an initial position H1 of the piston column 202 (at this time, the height of the air pressure chamber C isolated by the cylinder piston 102 in the cylinder barrel 101 is H1), and then continues to run downwards, in the process, the gas holder piston 10 drives and pushes the piston column 202 in the hydraulic mechanism 2, and then pushes the hydraulic fluid in the inner chamber a to be transferred to the hydraulic chamber B of the cylinder barrel 101 through the communication pipe 3, the hydraulic fluid in the hydraulic chamber B pushes the cylinder piston 102, the cylinder piston 102 compresses the gas in the air pressure chamber C, and rises through the gas pressure p2 in the compressed air pressure chamber, and when the gas pressure p2 in the air pressure chamber reaches the equilibrium piston pressure again (at this time, the height of the air pressure chamber C is from H1 to H2), the cylinder piston 102 no longer runs. By calculation, the size of p2 in the pneumatic chamber C can be calculated, and the calibers of the two side cylinders (i.e., the hydraulic cylinder 201 and the cylinder 101) are different.
In the scheme, the hydraulic gas buffer device and the piston bottom-falling support 11 of the gas chamber are interdependent, the hydraulic gas buffer device is mainly used for relieving the impulse when the piston of the gas chamber descends, after the impulse is reduced, the piston bottom-falling support 11 immediately bears the static load of the piston 10 of the gas chamber, and the organic combination of functions is realized on the basis of function separation.
Preferably, the drain valve 5a, the drain valve 5b and the emptying valve 7 can be matched with and controlled by the valve of the gas tank inlet pipe 12 and the valve of the gas tank outlet pipe 12, so that the effect is better.
It should be noted that: the communicating pipe runs through the inside and the outside of the gas chamber cylinder 8, and the air pressure mechanism 1 arranged outside the gas chamber cylinder can be flexibly arranged. The device can be used for the gas cabinet sealed by the rubber film and can also be used for other sealing forms of gas cabinets. The gas chamber sealed by the rubber film comprises a one-section type gas chamber sealed by the rubber film and a two-section type gas chamber sealed by the rubber film. The hydraulic liquid is preferably antifreeze liquid, the compressed gas can be air, and the whole device has simple composition and low cost.
Taking a 13.5-million cubic meter gas holder as an example, the gas holder has a diameter of 61.8 meters, a piston stroke of 45.010 meters, and a rubber membrane length of half of the piston stroke, i.e., 22.505 meters. If 20% of the space is not allowed, i.e. 9.002 m of stroke is not available, only 75% of the space is available and the piston available stroke is only 33.7575 m. Under the large environment where energy conservation is needed everywhere today, the 25% capacity can be excavated as much as possible, and the effect is very considerable.
When the piston of the gas holder descends, the descending power is the gas pressure difference below the piston. When the engineering design is carried out, the pressure difference of the pressure fluctuation is 0.15kPa to 0.5kPa, and the downward gravity difference of the piston is 45 tons to 150 tons according to the engineering example with the diameter of 61.8 m. The speed of the downward movement of the gas chamber piston does not exceed 6m/min at most, and the impulse of the piston to the bottom is the impulse generated from the speed of 6m/min to 0m/min, and the impulse is related to the time and the distance required for the 6m/min to be reduced to 0 m/min.
A buffering bottom falling device is not designed for the piston to descend to the bottom below the piston of the existing gas chamber. Because no buffering bottom falling device is arranged, only the gas inlet and outlet are controlled during operation in order to protect the gas chamber piston, and when the piston falls to a distance of 10% of the bottom falling, the outlet valve is closed, so that the piston does not fall any more, which is the reason that 10% of the effective downward stroke of the gas chamber is wasted. The scheme solves the problem of impact on the bottom when the piston of the gas chamber falls to the bottom, so that 10-15% of safety stroke is not required to be reserved when the piston descends. In the process of the piston falling to the bottom, due to the protection of the hydraulic gas buffer device, the impact of the piston on the bottom of the gas chamber is avoided, the piston is protected, and meanwhile, the effective stroke of the piston in operation is increased.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a hydraulic gas buffer which characterized in that: comprises a pneumatic mechanism, a hydraulic mechanism and a communicating pipe;
the hydraulic mechanism mainly comprises a hydraulic cylinder and a piston column, wherein the piston end of the piston column extends into the hydraulic cylinder, the cylinder jacking end of the piston column is positioned outside the hydraulic cylinder, and a cavity formed by the piston end of the piston column and the hydraulic cylinder is filled with hydraulic liquid;
the pneumatic mechanism mainly comprises a cylinder barrel and a cylinder piston, wherein the cylinder piston is arranged in the cylinder barrel and correspondingly divides the cylinder barrel into a hydraulic cavity and a pneumatic cavity, hydraulic liquid is filled in the hydraulic cavity, compressed gas is filled in the pneumatic cavity, and the hydraulic cavity of the cylinder barrel is communicated with the inner cavity of the hydraulic barrel through a communicating pipe.
2. The hydraulic gas cushion device according to claim 1, wherein: the joint of the communicating pipe and the hydraulic cavity of the cylinder barrel is provided with a valve, and the joint of the communicating pipe and the inner cavity of the hydraulic barrel is also provided with a valve.
3. The hydraulic gas cushion device according to claim 1, wherein: the hydraulic cavity of the cylinder barrel is provided with a liquid discharge valve, and the inner cavity of the hydraulic barrel is also provided with a liquid discharge valve.
4. The hydraulic gas cushion device according to claim 1, wherein: the end of the air pressure cavity of the cylinder barrel is provided with a cylinder sealing plate, and the cylinder sealing plate is provided with an emptying valve.
5. A gas holder, characterized in that: the hydraulic gas buffering device comprises the hydraulic gas buffering device as claimed in any one of claims 1 to 4, wherein the hydraulic mechanism is arranged in a cylinder of the gas holder, the end surface of a top pressing end of a piston column cylinder of the hydraulic mechanism corresponds to the bottom surface of a fixed arrangement of a piston, and the pneumatic mechanism is arranged outside the cylinder of the gas holder through a communicating pipe penetrating through the cylinder of the gas holder;
the initial state of the hydraulic gas buffer device is as follows: the hydraulic fluid in the hydraulic mechanism and the hydraulic fluid in the pneumatic mechanism are in a balanced state, and the gas pressure in the gas pressure cavity in the pneumatic mechanism is equal to the gas pressure below the piston of the gas holder.
6. The gas holder of claim 5, wherein: the hydraulic gas buffer devices are provided with a plurality of groups and are uniformly arranged around the circumference of the cylinder body of the gas chamber.
7. The gas holder of claim 5, wherein: the end surface of the cylinder top pressure end of the piston column of the hydraulic mechanism is higher than the top end surface of the piston bottom falling support in an initial state, and after the piston column of the hydraulic mechanism is pressed down by the piston of the gas holder, the end surface of the cylinder top pressure end of the piston column is not higher than the top end surface of the piston bottom falling support.
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| CN202011194340.4A CN112178441A (en) | 2020-10-30 | 2020-10-30 | Hydraulic gas buffer device and gas chamber with same |
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| CN202011194340.4A CN112178441A (en) | 2020-10-30 | 2020-10-30 | Hydraulic gas buffer device and gas chamber with same |
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| JP2016148376A (en) * | 2015-02-12 | 2016-08-18 | 株式会社Ihi | Gas holder |
| JP2017067275A (en) * | 2015-10-02 | 2017-04-06 | 新日鐵住金株式会社 | Gas holder, piston support structure and earthquake proof bracket |
| FR3059067A1 (en) * | 2016-11-21 | 2018-05-25 | Peugeot Citroen Automobiles Sa | SUSPENSION DEVICE WITH VARIABLE STIFFNESS |
| CN108224065A (en) * | 2018-01-23 | 2018-06-29 | 中冶赛迪工程技术股份有限公司 | A kind of rubber film sealing gas chamber with jet air-cushion buffer unit |
| CN208881519U (en) * | 2018-10-12 | 2019-05-21 | 烟台坤正密封制品有限公司 | A kind of military trailer HY. S system |
| CN213629872U (en) * | 2020-10-30 | 2021-07-06 | 中冶赛迪技术研究中心有限公司 | Hydraulic gas buffer device and gas chamber with same |
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