Gas storage and transmission device

Abstract

The utility model discloses a gas storage and transmission device which comprises a molecular sieve oxygen generator, the gas outlet end of the molecular sieve oxygen generator is sequentially connected with a first gas transmission pipeline and a gas storage tank A, the gas outlet end of the gas storage tank A is provided with a second gas transmission pipeline and a third gas transmission pipeline, and the gas outlet ends of the second gas transmission pipeline and the third gas transmission pipeline are connected with a gas storage tank B; a bypass valve is arranged on the second gas conveying pipeline, an oxygen supercharger is arranged on the third gas conveying pipeline, a fourth gas conveying pipeline is arranged at the gas outlet end of the gas storage tank B, and a pressure regulating valve is arranged on the fourth gas conveying pipeline. When the gas consumption is in a low peak period, the molecular sieve oxygen generator continuously generates oxygen, the oxygen supercharger is started, and surplus oxygen is pumped into the gas storage tank to be stored for standby application; and when the gas consumption is in a peak period, the molecular sieve oxygen generator and the stored high-pressure standby oxygen supply simultaneously, so that the stable operation of the oxygen generation system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas transportation, in particular to a gas storage and transmission device. Background Art

[0002] In the industrial and medical fields, PSA or VPSA molecular sieve oxygen production systems are widely used. Their main function is to stably generate oxygen that meets specific standards. However, the amount of gas produced by these systems is limited. When the actual gas consumption exceeds the designed capacity, it will significantly affect the quality of the produced gas. Specifically, when the gas consumption exceeds the system's tolerance, the concentration of the produced gas will decrease, and key gas parameters such as dew point will also shift. These changes are very unfavorable for applications in industrial production and medical fields that require strict oxygen quality. To solve this problem, the system automatically switches to a backup gas source. However, a backup gas source is not an ideal solution. Usually, the cost of a backup gas source is much higher than the cost of operating a molecular sieve oxygen production system on a daily basis. This not only increases the burden on the company, but also seriously affects the company's economic benefits if it relies on a backup gas source for a long time.

[0003] In addition, when the gas consumption of the existing molecular sieve oxygen production system reaches its peak, the oxygen production system often needs to run at a high load for a long time. This means that the system needs to consume more electricity and be used during peak hours when the electricity bill is higher, which further increases the operating cost of the system. When the oxygen production system faces normal or low gas consumption, the situation is not ideal. Due to insufficient gas consumption, the system may start and stop frequently. This frequent start and stop not only wastes a lot of energy, but also causes additional wear on the mechanical parts and electronic components of the system, shortening the service life of the system. At the same time, frequent start and stop also means that the system needs more frequent maintenance and upkeep, which undoubtedly increases the maintenance cost of the enterprise.

[0004] In addition, some pipeline valves, control components and gas transmission monitoring units in the existing molecular sieve oxygen production system require power support. Once a power outage occurs, the gas supply status of the system will be unknown, which may cause the gas volume control to fail, thereby increasing the risk of gas supply interruption.

[0005] In summary, whether the gas consumption exceeds the system capacity or the system is frequently started and stopped between high and low gas consumption, it brings a series of challenges to the oxygen production system in the industrial and medical fields. In addition, the existing molecular sieve oxygen production system needs to improve its adaptability to power fluctuations while ensuring stable and reliable gas supply. Therefore, the existing molecular sieve oxygen production system urgently needs further optimization and improvement. Utility Model Content

[0006] The utility model aims to provide a gas storage and transmission device which can ensure stable gas supply without a backup gas source, and can still control the gas supply valve and realize visual monitoring of the gas supply situation when the power is off.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following scheme: a gas storage and transmission device, including a molecular sieve oxygen generator, a first gas transmission pipeline is provided at the gas outlet end of the molecular sieve oxygen generator, the gas outlet end of the first gas transmission pipeline is connected to a gas storage tank A, a second gas transmission pipeline is provided at the gas outlet end of the gas storage tank A, the gas outlet end of the second gas transmission pipeline is connected to a gas storage tank B, a bypass valve is provided on the second gas transmission pipeline, a third gas transmission pipeline is also provided between the gas storage tank A and the gas storage tank B, an oxygen booster is provided on the third gas transmission pipeline, a fourth gas transmission pipeline is provided at the gas outlet end of the gas storage tank B, and a pressure regulating valve is provided on the fourth gas transmission pipeline.

[0008] As a preferred solution of the utility model, a first ball valve is provided on the third gas transmission pipeline between the oxygen booster and the gas storage tank A.

[0009] As a preferred solution of the present invention, a second ball valve is provided on the third gas transmission pipeline between the oxygen booster and the gas storage tank B.

[0010] As a preferred solution of the utility model, a third ball valve is provided on the fourth gas transmission pipeline between the gas storage tank B and the pressure regulating valve.

[0011] As a further solution of the utility model, the pressure regulating valve includes a valve body, a hollow valve cavity is provided in the valve body, an air inlet is provided at one end of the valve cavity and can penetrate the valve body and further be connected to the air outlet end of the fourth air supply pipeline, the diameter of the air inlet is smaller than the diameter of the valve cavity and is coaxial with the valve cavity, an air outlet connected to the valve cavity is provided on the top of the valve body, a valve core is provided in the valve cavity, the outer wall of the valve core is in contact with the inner wall of the valve cavity and can move back and forth in the valve cavity, a valve head is provided at the front end of the valve core, and the diameter is smaller than the diameter of the valve core. The diameter of the valve head is larger than the diameter of the air inlet passage and is coaxial with the air inlet passage. The valve head and the valve core are provided with air-permeable cavities that can communicate with each other. The valve head is provided with at least one air hole that can connect the valve cavity with the air-permeable cavity. The valve core is provided with at least one air outlet hole that can communicate with the air outlet passage. A spring is pressed against the tail end of the valve core in the valve cavity. An adjusting part is provided on the valve body. The adjusting part can change the compression stroke of the spring and thereby adjust the air pressure that pushes the valve core to move backward.

[0012] As a further solution of the utility model, the adjusting part includes an adjusting through hole that passes through the rear end of the valve body and is connected to the valve cavity. An adjusting rod is movably inserted into the adjusting through hole. The adjusting rod is threadedly connected to the adjusting through hole. One end of the adjusting rod extends into the valve cavity and a push plate is provided at the end to abut against the rear end of the spring. The other end of the adjusting rod extends out of the through hole and an adjusting wheel is provided at the end.

[0013] As a further solution of the utility model, an indicating through hole is passed through the center of the adjusting rod, a connecting rod is connected to the tail of the valve core, the tail end of the connecting rod passes through the indicating through hole, and a pointer is provided at the end extending out of the indicating through hole, and a ruler is provided on the valve body and extends backward parallel to the connecting rod, and the ruler is provided with a marking area for cooperating with the pointer to indicate the position distance of the valve core.

[0014] As a preferred solution of the utility model, a sensor is installed on the ruler, and a sensing point cooperating with the sensor is provided on the pointer.

[0015] As a preferred embodiment of the utility model, a silent tube extending backward is provided on the inner wall of the air permeable cavity near one end of the valve head, the tail end of the silent tube is open and connected to the air permeable cavity, and air permeable grooves are sequentially penetrated along the circumferential outer wall of the silent tube.

[0016] As a preferred embodiment of the utility model, an annular cavity which can communicate with the valve cavity is arranged around the circumference of the valve cavity, the air outlet is connected with the annular cavity, and the air outlet holes are arranged on the outer wall of the valve core at corresponding positions of the annular cavity at intervals.

[0017] In summary, the utility model has the following beneficial effects compared with the prior art: the utility model can achieve the following adjustments and optimizations by adding a gas storage and gas delivery device to the gas delivery end of the existing molecular sieve oxygen production system, and the device includes an oxygen booster, a high-pressure gas storage tank, and related pipeline valves and other control components:

[0018] 1. Gas consumption regulation: When the gas consumption of the oxygen production system is low or the electricity consumption is off-peak, the oxygen booster can pressurize the excess oxygen and store it in a high-pressure gas storage tank, thereby saving resources.

[0019] 2. Stable gas supply: During the peak period of gas consumption, the oxygen production system and the backup oxygen in the high-pressure gas storage tank supply gas at the same time to ensure the stable operation of the oxygen production system. This adjustment avoids the oxygen production system being in the peak period of electricity consumption for a long time when the gas consumption is large, reducing the operating cost.

[0020] 3. Improved energy efficiency: Traditionally, when the oxygen production system is in normal or low gas consumption, the system will start and stop frequently, resulting in energy waste and affecting the life of the oxygen production system. The introduction of gas storage and transmission devices can avoid this phenomenon and improve energy efficiency.

[0021] 4. Visual control of oxygen parameters: A pressure regulating valve for manually adjusting the gas volume has been added to solve the problem of controlling the gas supply valve during power outages, and can achieve visual monitoring of the gas supply situation, making the gas supply more controllable.

[0022] In summary, through the adjustment and optimization of the above-mentioned scheme, the utility model can achieve stable operation of the oxygen production system under different gas consumption, improve energy utilization efficiency, and ensure that oxygen parameters meet the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 This is one of the three-dimensional structural views of the pressure regulating valve in the utility model, and an enlarged view of a local area in the figure.

[0025] Figure 3 This is the second three-dimensional structural view of the pressure regulating valve in the utility model.

[0026] Figure 4 This is one of the cross-sectional views of the pressure regulating valve in the utility model.

[0027] Figure 5 This is the second cross-sectional view of the pressure regulating valve in the utility model.

[0028] Figure 6 for Figure 4 A magnified view of point A and a schematic diagram of the gas flow path.

[0029] Figure 7 for Figure 5 Magnified view at B.

[0030] Explanation of the reference numerals: 1. molecular sieve oxygen generator; 2. gas tank A; 3. gas tank B; 4. oxygen booster; 5. pressure regulating valve; 6. spring; 7. regulating part; 8. pointer; 9. ruler; 11. first gas pipeline; 20. third gas pipeline; 21. second gas pipeline; 22. first ball valve; 23. second ball valve; 24. bypass valve; 31. fourth gas pipeline; 32. third ball valve; 51. valve body; 52. valve cavity; 53. air inlet; 54. air outlet; 55. valve core; 56. valve head; 57. air permeable cavity; 58. air outlet; 59. silent pipe; 71. regulating through hole; 72. regulating rod; 73. push plate; 74. regulating wheel; 75. indicating through hole; 81. sensing point; 90. ruler seat; 91. marking area; 92. Sensor; 93. Locking knob; 541. Annular cavity; 551. Connecting rod; 561. Sealing ring; 571. Air vent; 591. Air groove; 721. Adjustment scale; 911. Scale area; 912. Danger warning area. DETAILED DESCRIPTION

[0031] The following specific implementation contents provide a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0032] In addition, spatially related words may be used, such as "below", "lower side", "from the inside out", "above", "upper side" and similar words. These relative words are for the convenience of describing the relationship between one element or feature and another element or feature in the drawings. These spatially related words include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotated 90 degrees or other orientations, and the spatially related adjectives used therein may also be interpreted in the same way. Therefore, it cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods: Figures 1 to 7The gas storage and transmission device shown in the figure includes a molecular sieve oxygen generator 1, a first gas transmission pipeline 11 is provided at the gas outlet end of the molecular sieve oxygen generator 1, the gas outlet end of the first gas transmission pipeline 11 is connected to a gas storage tank A2, a second gas transmission pipeline 21 is provided at the gas outlet end of the gas storage tank A2, the gas outlet end of the second gas transmission pipeline 21 is connected to a gas storage tank B3, a bypass valve 24 is provided on the second gas transmission pipeline 21, a third gas transmission pipeline 20 is further provided between the gas storage tanks A2 and B3, and an oxygen supply valve 24 is provided on the third gas transmission pipeline 20. An oxygen booster 4 is provided with a first ball valve 22 on the third gas pipeline 20 between the oxygen booster 4 and the gas tank A2, a second ball valve 23 is provided on the third gas pipeline 20 between the oxygen booster 4 and the gas tank B3, a fourth gas pipeline 31 is provided at the gas outlet end of the gas tank B3, a pressure regulating valve 5 is provided on the fourth gas pipeline 31, and a third ball valve 32 is provided on the fourth gas pipeline 31 between the gas tank B3 and the pressure regulating valve 5.

[0034] Under normal circumstances, the oxygen produced by the molecular sieve oxygen generator 1 will first enter the gas storage tank A2. When the gas consumption is at a low peak, the molecular sieve oxygen generator 1 will continue to produce oxygen, and the oxygen booster 4 will be turned on to draw the surplus oxygen into the gas storage tank B3 for storage and standby. When the gas consumption is at a peak, the molecular sieve oxygen generator 1 and the stored high-pressure standby oxygen will supply oxygen at the same time to ensure the smooth operation of the oxygen production system and that the physical and chemical indicators of the supplied oxygen meet the use requirements.

[0035] Among them, Figures 2 to 7As shown, the pressure regulating valve 5 includes a valve body 51, a hollow valve cavity 52 is provided in the valve body 51, an air inlet 53 is provided at one end of the valve cavity 52, which penetrates the valve body 51 and is connected to the outlet end of the fourth gas transmission pipeline 31, the diameter of the air inlet 53 is smaller than the diameter of the valve cavity 52, and the air inlet 53 is coaxial with the valve cavity 52, an air outlet 54 connected to the valve cavity 52 is provided on the top of the valve body 51, and a valve core 55 whose outer wall is in contact with the inner wall of the valve cavity 52 and can move back and forth in the valve cavity 52 is provided in the valve cavity 52, and the front end of the valve core 55 is provided The valve head 56 has a diameter smaller than that of the valve core 55, and the diameter of the valve head 56 is larger than that of the air inlet 53 and is coaxial with the air inlet 53. A ventilated cavity 57 that can communicate with each other is provided in the valve head 56 and the valve core 55. At least one vent hole 571 that can communicate the valve cavity 52 with the ventilated cavity 56 is provided on the valve head 56. At least one outlet hole 58 that can communicate with the outlet 54 is provided on the valve core 55. A spring 6 is pressed against the tail end of the valve core 55 in the valve cavity 52. ​​In order to reduce the noise of the air flow through the ventilated cavity 57, a mute pipe 59 extending backward is provided on the inner wall of the ventilated cavity 57 located near one end of the valve head 56. The tail end of the mute pipe 59 is open and communicates with the ventilated cavity 57. Ventilated grooves 591 are sequentially spaced and penetrated along the circumferential outer wall of the mute pipe 59. When the airflow in the air storage tank B3 enters the air inlet 53 through the fourth air delivery pipeline 31, due to the pressure, the valve head 56 will be pushed, so that the valve head 56 and the valve core 55 will move backward synchronously. At this time, the airflow will enter the air permeable cavity 57 from the gap between the valve head 56 and the valve cavity 52 through the air vent 571. A part of the airflow entering the air permeable cavity 57 will flow backward from the space between the silent tube 59 and the inner wall of the air permeable cavity 57, and the other part will enter the silent tube 59 from the air permeable groove 591 on the circumferential outer wall of the silent tube 59, and flow backward along the silent tube 59 to the tail end of the air permeable cavity 57. When the airflow converges at the tail end of the air permeable cavity 57, it will flow out from the air outlet 58 at the position of the valve core 55. During this flow process, the airflow enters a large space from a small space, and then converges after being divided, which can effectively reduce the noise of the airflow. In order to further reduce the noise generated again after the flow passes through the air outlet 58, an annular cavity 541 that can communicate with the valve cavity 52 is arranged around the circumference of the valve cavity 52, and the air outlet 54 is connected to the annular cavity 541. The air outlets 58 are arranged on the outer wall of the circumference of the valve core 55 at the corresponding positions of the annular cavity 541. When the airflow flows out of the air outlet 58 and enters the larger annular cavity 541, the possibility of noise caused by pressure will be further reduced. Finally, the airflow in the annular cavity 541 enters the air outlet 54 and is transported to the gas terminal.

[0036] In addition, in order to better and more accurately control the oxygen flow to the gas-using terminal, an adjusting portion 7 is provided on the valve body 51, and the adjusting portion 7 can change the compression stroke of the spring 6 and thereby adjust the air pressure that pushes the valve core 55 to move backward. Specifically, the regulating portion 7 includes an regulating through hole 71 that passes through the rear end of the valve body 51 and is connected to the valve cavity 52. ​​An regulating rod 72 is movably inserted into the regulating through hole 71. The regulating rod 72 is threadedly connected to the regulating through hole 71. One end of the regulating rod 72 extends into the valve cavity 52, and a push plate 73 is provided at the end thereof to abut against the rear end of the spring 6. The push plate 73 compresses the telescopic stroke of the spring 6, so as to change the pressure required for the rearward movement of the valve head 56 and the valve core 55. Since the end face of the valve head 56 is attached to the end of the valve cavity 52 facing the air inlet 53 in the initial state, that is, the end face of the valve head 56 blocks the opening of the air inlet 53 connecting the valve cavity 52 in the absence of air pressure. When air pressure is generated in the air inlet 53, the valve head 56 will be pushed, thereby opening the opening of the air inlet 53 connecting the valve cavity 52. ​​The size of the air pressure is related to the opening of the air inlet 53 connecting the valve cavity by the valve head 56. The sizes of the openings 52 are related. Therefore, the farther the valve head 56 is from the opening position of the air inlet 53 connecting to the valve chamber 52, the greater the amount of air entering the valve chamber 52 from the air inlet 53. This means that the shorter the compression stroke of the spring, the greater the air pressure required to push open the valve head 56. The operator can easily control the airflow rate by adjusting the position of the push plate 73. Specifically, the other end of the adjusting rod 72 extends out of the through hole 71 and is provided with an adjusting wheel 74 at the end. In this embodiment, the end of the adjusting rod 72 extending out of the through hole 71 has an adjusting scale 721 on its circumferential outer wall, which allows the operator to more clearly understand the parameters to be adjusted. The adjusting rod 72 is rotated synchronously by rotating the adjusting wheel 74. Since the adjusting rod 72 is threadedly connected to the adjusting through hole 71, it moves back and forth relative to the adjusting through hole 71 when rotating, thereby changing the position of the push plate 73 in the valve chamber 52 to compress the spring 6. Figure 4 , Figure 5 as well as Figure 7 It can be clearly seen that in this embodiment, the push plate 73 and the adjustment rod 72 are rotatably connected together, which is more conducive to the displacement of the push plate 73. Figures 4 to 7 It can be seen that a sealing ring 561 is provided at the opening of the valve cavity 52 where the air inlet duct 53 connects the valve cavity 52. ​​The outer wall diameter of the sealing ring 561 is equal to or greater than the inner wall diameter of the valve cavity 52, while the diameter of the central through hole of the sealing ring 561 is smaller than the diameter of the air inlet duct 53. This ensures that when the valve head 56 closes the opening where the air inlet duct 53 connects the valve cavity 52, air leakage can be effectively reduced.

[0037] Also, see Figures 2 to 5As shown in the figure, in order to enable the operator to understand the real-time status of the gas supply valve when the power is off or the gas transmission device is not equipped with electronic monitoring, thereby realizing the visualization of the gas supply situation, an indicating through hole 75 is penetrated in the center of the adjusting rod 72, and a connecting rod 551 is connected to the tail of the valve core 55. The tail end of the connecting rod 551 passes through the indicating through hole 75, and a pointer 8 is provided at the end extending out of the indicating through hole 75. A scale 9 is provided on the valve body 51, which is parallel to the connecting rod 551 and extends backward. The scale 9 is provided with a marking area 91 for cooperating with the pointer 8 to indicate the position distance of the valve core 55 (that is, the distance of the valve head 56 from the opening position of the valve cavity 52 connected to the air inlet duct 53). When the airflow pushes the valve head 56 to open the opening of the air inlet 53 connecting to the valve cavity 52, the connecting rod 551 connected to the tail of the valve core 55 will be displaced synchronously. At the same time, the pointer 8 will indicate the size of the opening of the air inlet 53 connecting to the valve cavity 52 opened by the valve head 56 along with the movement of the connecting rod 551 and the marking area 91 on the scale 9. In this embodiment, the marking area 91 of the scale 9 is divided into a parallel scale area 911 and a danger warning area 912. When the pointer 8 moves in the scale area 911, it represents the distance of the displacement of the valve head 56, which can also let the operator understand the current gas volume passing through and whether there is air flow passing through. When the pointer 8 completely points to the leftmost end of the scale area 911, it means that the air pressure in the fourth gas transmission pipeline 31 is very low, which is not enough to push the valve head 56 to open the opening of the air inlet 53 connecting to the valve cavity 52, which means that there is no oxygen flow to the gas-using terminal, or the compression force of the adjusted spring 6 is too large, and the air pressure value does not reach the set pressure value. When the pointer 8 moves in the danger warning area 912, it means that the air pressure is too high, and the operator needs to deal with it further. In order to allow the operator to receive the signal of excessive air pressure in time without having to keep an eye on the state of the pointer 8, a sensor 92 is installed on the scale 9, and a sensing point 81 that matches the sensor 92 is provided on the pointer 8. As can be seen from the figure, in this embodiment, the scale 9 is movably installed on the valve body 51, and a scale seat 90 is provided on the valve body 51. The scale seat 90 has slots running through it from front to back. The scale 9 is movably inserted into the slot of the scale seat 90. A locking knob 93 is threadedly connected to the top of the scale seat 90. The bottom end of the locking knob 93 extends into the slot of the scale seat 90 and then abuts against the top edge of the scale 9 to lock the scale 9. When the air pressure is too high, the pointer 8 will move to the danger warning area 912. At this time, the sensing point 81 will touch the sensor 92. The sensor 92 will turn on the preset warning light (not shown in the figure) through the signal. Both the sensor 92 and the warning light can be powered by a battery without being affected by system power outages.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas storage and transmission device, comprising a molecular sieve oxygen generator (1), wherein a first gas transmission pipeline (11) is provided at the gas outlet end of the molecular sieve oxygen generator (1), and the gas outlet end of the first gas transmission pipeline (11) is connected to a gas storage tank A (2), characterized in that: A second gas pipeline (21) is provided at the gas outlet end of the gas storage tank A (2), the gas outlet end of the second gas pipeline (21) is connected to the gas storage tank B (3), a bypass valve (24) is provided on the second gas pipeline (21), a third gas pipeline (20) is provided between the gas storage tank A (2) and the gas storage tank B (3), an oxygen booster (4) is provided on the third gas pipeline (20), a fourth gas pipeline (31) is provided at the gas outlet end of the gas storage tank B (3), and a pressure regulating valve (5) is provided on the fourth gas pipeline (31).

2. A gas storage and transmission device according to claim 1, characterized in that: A first ball valve (22) is provided on the third gas transmission pipeline (20) between the oxygen booster (4) and the gas storage tank A (2).

3. A gas storage and transmission device according to claim 2, characterized in that: A second ball valve (23) is provided on the third gas transmission pipeline (20) between the oxygen booster (4) and the gas storage tank B (3).

4. A gas storage and transmission device according to claim 3, characterized in that: A third ball valve (32) is provided on the fourth gas transmission pipeline (31) between the gas storage tank B (3) and the pressure regulating valve (5).

5. A gas storage and transmission device according to any one of claims 1 to 4, characterized in that: The pressure regulating valve (5) comprises a valve body (51), wherein a hollow valve cavity (52) is provided in the valve body (51), an air inlet (53) is provided at one end of the valve cavity (52) and can penetrate the valve body (51) and further be connected to the air outlet end of the fourth air transmission pipeline (31), the diameter of the air inlet (53) is smaller than the diameter of the valve cavity (52) and is coaxial with the valve cavity (52), an air outlet (54) is provided at the top of the valve body (51) and is connected to the valve cavity (52), a valve core (55) is provided in the valve cavity (52) and the outer wall of the valve core (52) is in contact with the inner wall of the valve cavity (52) and can move back and forth in the valve cavity (52), a valve head (56) is provided at the front end of the valve core (55) and the diameter of the valve head (56) is smaller than the diameter of the valve core (55), and the valve head (56) ) has a diameter greater than that of the air inlet passage (53) and is coaxial with the air inlet passage (53); a ventilated cavity (57) that can communicate with each other is provided in the valve head (56) and the valve core (55); at least one vent hole (571) that can communicate the valve cavity (52) with the ventilated cavity (57) is provided on the valve head (56); at least one outlet hole (58) that can communicate with the air outlet passage (54) is provided on the valve core (55); a spring (6) is pressed against the rear end of the valve core (55) in the valve cavity (52); and an adjusting portion (7) is provided on the valve body (51); the adjusting portion (7) can change the compression stroke of the spring (6) and thereby adjust the air pressure that pushes the valve core (55) to move backward.

6. A gas storage and transmission device according to claim 5, characterized in that: The adjusting portion (7) includes an adjusting through hole (71) that passes through the rear end of the valve body (51) and is connected to the valve cavity (52). An adjusting rod (72) is movably inserted into the adjusting through hole (71). The adjusting rod (72) is threadedly connected to the adjusting through hole (71). One end of the adjusting rod (72) extends into the valve cavity (52) and a push plate (73) is provided at the end thereof to abut against the rear end of the spring (6). The other end of the adjusting rod (72) extends out of the through hole (71) and an adjusting wheel (74) is provided at the end thereof.

7. A gas storage and transmission device according to claim 6, characterized in that: An indicating through hole (75) is passed through the center of the adjusting rod (72); a connecting rod (551) is connected to the tail of the valve core (55); the tail end of the connecting rod (551) passes through the indicating through hole (75), and a pointer (8) is provided at the end extending out of the indicating through hole (75); a scale (9) is provided on the valve body (51) and extends backward in parallel with the connecting rod (551); and a marking area (91) is provided on the scale (9) for cooperating with the pointer (8) to indicate the position distance of the valve core (55).

8. A gas storage and transmission device according to claim 7, characterized in that: A sensor (92) is installed on the scale (9), and a sensing point (81) matching with the sensor (92) is provided on the pointer (8).

9. A gas storage and transmission device according to claim 5, characterized in that: A silent tube (59) extending backward is provided on the inner wall of the air-permeable cavity (57) located near one end of the valve head (56); the tail end of the silent tube (59) is open and communicates with the air-permeable cavity (57); and air-permeable grooves (591) are sequentially spaced along the circumferential outer wall of the silent tube (59).

10. A gas storage and transmission device according to claim 5, characterized in that: An annular cavity (541) that is communicable with the valve cavity (52) is provided around the circumference of the valve cavity (52); the air outlet (54) is communicated with the annular cavity (541); and the air outlet holes (58) are sequentially arranged at intervals on the outer wall of the valve core (55) at positions corresponding to the annular cavity (541).

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