Efficient pressure stabilizing equipment for bulk gas station pipeline

By designing an automated lifting sleeve and solenoid valve system, the problems of manual depressurization and gas leakage in large-scale gas station pipelines have been solved, realizing automated gas management and safe and stable operation of equipment.

CN223882176UActive Publication Date: 2026-02-06HONGXIN YONGZHEN ENGINEERING TECHNOLOGY (SHANGHAI) CO LTD
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Patent Information

Application Number
CN202520749738.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-21
Publication Date
2026-02-06
Estimated Expiration
2035-04-21

AI Technical Summary

Technical Problem

In existing technologies, large gas station pipelines require manual depressurization, and rupture discs need to be reinstalled after use, and internal gas is prone to leakage, which is not conducive to maintaining the operating environment.

Method used

A high-efficiency pressure stabilizing device was designed, comprising a lifting sleeve, a fixed sleeve, a solenoid valve, a pressure sensor, and an electric push rod. It prevents gas leakage through an automatic pressure relief and pressurization mechanism, and achieves positioning and sealing of the gas station storage tank through an L-shaped bracket and a pneumatic telescopic rod.

Benefits of technology

It achieves automated gas depressurization and pressurization, preventing gas leakage and improving the safety and ease of maintenance of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of gas station pipeline maintenance, and provides efficient pressure stabilizing equipment for a bulk gas station pipeline, which comprises a gas station storage tank, a rotary positioning mechanism is arranged at the bottom of the gas station storage tank, and a gas outlet pipe is fixedly connected to the top of the gas station storage tank. An electromagnetic valve is fixedly connected to the upper portion of the interior of the air outlet pipe, a fixing sleeve is fixedly connected to the outer portion of the air outlet pipe, a jacking sleeve is connected to the upper portion of the interior of the fixing sleeve in an inserted mode, and a pressure sensor between the lifting sleeve and the jacking sleeve detects the air leakage condition of the interior of the fixing sleeve and the jacking sleeve. And when the pressure is reduced in the using process, the telescopic electric push rod lifting sleeve is started to press the jacking sleeve downwards, then the interior of the gas station storage tank can be pressurized through the fixed sleeve and the electromagnetic valve, and leakage of the gas is avoided.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas station pipeline maintenance, and specifically relates to a high -efficient pressure -stabilizing equipment for bulk gas station pipeline. BACKGROUND

[0002] Bulk gas station pipeline refers to the system for centralized supply of bulk gas, mainly including gas source part, conveying pipeline part and terminal configuration equipment part. Bulk gas usually includes nitrogen, oxygen, hydrogen, argon, helium and the like, and these gases are used in large quantities in industrial production, such as electronic manufacturing, food packaging, medical first aid and the like.

[0003] Through the search, the existing patent (CN213982987U) discloses a double safety vent valve group, which comprises: a vent main pipeline, a manual vent branch pipeline and an automatic vent branch pipeline. The gas inlet of the vent main pipeline is installed above the storage tank, and the gas outlets of the vent main pipeline are connected with the manual vent branch pipeline and the automatic vent branch pipeline respectively. First rupture disc, first vent valve, second rupture disc and second vent valve are installed on the automatic vent branch pipeline. Further, a safety stop valve and a pipeline safety valve are installed on the manual vent branch pipeline, and a bypass is arranged on the manual vent branch pipeline, and a manual vent valve is installed on the bypass. Further, the gas inlet of the three-way valve is installed at the gas outlet of the automatic vent branch pipeline, and the first automatic vent branch pipeline and the second automatic vent branch pipeline are installed at the gas outlet of the three-way valve. Further, the first rupture disc and the first vent valve are sequentially installed on the first automatic vent branch pipeline. Further, the second rupture disc and the second vent valve are sequentially installed on the second automatic vent branch pipeline. In an embodiment, when the pressure in the storage tank exceeds the set value, the controller can automatically control the first vent valve to open, and the storage tank is depressurized to avoid excessive pressure in the storage tank. When the pressure returns to the set value after venting, the controller automatically closes the first vent valve, and the first vent valve and the second vent valve can be used alternately. When the first vent valve and the second vent valve fail to open, the manual vent valve can be manually opened by the operator to depressurize the storage tank, thereby ensuring the safe operation of the gas station.

[0004] However, in the above scheme, manual depressurization is still required, the rupture disc needs to be reinstalled after being used for blasting, and the internal gas is prone to leakage, which is not conducive to the maintenance of the use environment.

[0005] Therefore, the utility model provides a high -efficient pressure -stabilizing equipment for bulk gas station pipeline. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of mass gas station pipeline high-efficiency pressure stabilizing equipment, solve the problem that it still needs to be manually relieved in relevant technology, rupture disc needs to be reinstalled after blasting, and its internal gas is easy to leak outward, not conducive to maintenance use environment.

[0007] The utility model discloses a kind of mass gas station pipeline high-efficiency pressure stabilizing equipment, including gas station storage tank: the bottom of the gas station storage tank is provided with rotating positioning mechanism, the top of the gas station storage tank is fixedly connected with outlet pipe, the top of the inside of the outlet pipe is fixedly connected with electromagnetic valve, the outside of the outlet pipe is fixedly connected with fixed sleeve, the top of the inside of the fixed sleeve is insertedly connected with jacking sleeve, sliding limit mechanism is arranged between the jacking sleeve and fixed sleeve, the top of the jacking sleeve is fixedly connected with pressure sensor and connecting block one, the top of the connecting block one is fixedly connected with lifting sleeve, the lifting sleeve is sleeved on the outside of fixed sleeve, the lower side of the fixed sleeve is fixedly connected with fixed ring two, the inside of the lifting sleeve is fixedly connected with electric push rod, the output end of the electric push rod is fixedly connected with fixed ring two, the both sides of the outlet pipe are provided with pipeline output mechanism, the jacking sleeve and fixed sleeve set can automatically start electromagnetic valve to the inside of fixed sleeve when the internal gas pressure of gas station storage tank is too large, when the density of the gas that leaks is greater, the jacking sleeve inside fixed sleeve can be adapted to jacking sleeve, so as to push jacking sleeve upward, the condition of gas leakage in the inside of fixed sleeve and jacking sleeve is detected by pressure sensor between lifting sleeve and jacking sleeve, avoid gas leakage, when pressure decreases in use, start to contract electric push rod, and lifting sleeve presses down jacking sleeve, so as to increase the pressure in the inside of gas station storage tank by fixed sleeve and electromagnetic valve, avoid gas leakage.

[0008] Preferably, the rotating positioning mechanism includes connecting positioning cylinder, L-shaped clamping frame, fixed cylinder, screw, pneumatic telescopic rod, ball hinge and non-slip mat, both sides of the gas station storage tank are fixedly connected with connecting positioning cylinder, the inside of the connecting positioning cylinder is insertedly connected with connecting block two, the outside of both sides connecting block two is fixedly connected with L-shaped clamping frame, the top of both ends of the L-shaped clamping frame is fixedly connected with connecting block two on both sides of the gas station storage tank respectively, the gas station storage tank can be limited to rotate inside the U-shaped angle of L-shaped clamping frame by the setting L-shaped clamping frame, so that the gas station storage tank can be adjusted to use position after being fixed to L-shaped clamping frame.

[0009] Preferably, the bottom of the L-shaped card holder is fixedly connected with a fixing cylinder, screws are arranged between the two sides of the L-shaped card holder and the fixing cylinder, the L-shaped card holder is fixedly connected with the fixing cylinder through the screws, a pneumatic telescopic rod is arranged between the bottom of the gas station storage tank and the L-shaped card holder, ball hinges are arranged at the two ends of the pneumatic telescopic rod, the two ends of the pneumatic telescopic rod are rotationally connected with the gas station storage tank and the L-shaped card holder through the ball hinges, and antiskid pads are fixedly connected to the four corners of the bottom of the fixing cylinder.

[0010] Preferably, the sliding limiting mechanism comprises a fixed ring one, a sealing ring and a sealing groove, the outer ring of the fixed ring one is fixedly connected to the bottom of the jacking sleeve, the outer ring of the fixed ring one is fixedly connected with the sealing ring, the inner opening of the fixed sleeve is provided with the sealing groove, and the fixed ring one and the sealing ring are limited to slide up and down in the sealing groove.

[0011] Preferably, the electromagnetic valve is in communication with the interiors of the fixed sleeve and the jacking sleeve, and the pressure sensor is located between the lifting sleeve and the jacking sleeve.

[0012] Preferably, the pipeline output mechanism comprises an output pipeline, an output valve, an output port and a check valve, the output pipeline is fixed to the two sides of the air outlet pipe and in communication with the interior of the air outlet pipe, the interior of the other end of the output pipeline is fixedly connected with the output valve, the top of the output valve is fixedly connected with the output port, and the other end of the output port is fixedly connected with the check valve.

[0013] Preferably, the output pipeline and the electromagnetic valve are fixed with the air outlet pipe, the two side output pipelines are away from the electromagnetic valve, and the two side output pipelines are symmetrically arranged on the two sides of the air outlet pipe.

[0014] Preferably, the pipeline output mechanism is provided with two, and the two pipeline output mechanisms are respectively arranged on the two sides of the air outlet pipe.

[0015] The utility model discloses the beneficial effect is:

[0016] 1、 the utility model discloses a jacking sleeve and fixed sleeve can be set up when the inside gas pressure of gas station storage tank is too big, automatically start electromagnetic valve to the inside pressure relief of fixed sleeve, when the gas density of discharge is big, can adapt to the jacking sleeve inside fixed sleeve of jacking, thereby push the jacking sleeve to the top with the pressure sensor between the lifting sleeve and jacking sleeve, the condition of the inside leakage of fixed sleeve and jacking sleeve is detected, avoids the leakage of gas, when the pressure reduces in the use, start to contract electric push rod lifting sleeve and press down jacking sleeve, can be by fixed sleeve and electromagnetic valve to the inside pressure increase of gas station storage tank, avoids the outflow of gas;

[0017] 2、 the utility model discloses a L-shaped card frame can be set up and can be rotated in the U-shaped clamping angle inside L-shaped card frame of gas station storage tank, realize after fixing L-shaped card frame can make gas station storage tank adjust the use position, through the screw fixing use of L-shaped card frame and fixed cylinder, start again pneumatic telescopic rod can push gas station storage tank from the bottom to the corresponding angle and then position, the sealing ring can be set up and can seal the inside of sealing groove, thereby when pressure relief and lifting, can jacking in the sealed state of jacking sleeve, the output valve can be set up and can open and close the output of output port, the check valve can be set up and can avoid external pressure backflow. ACCURACY

[0018] The utility model makes further detailed explanation in combination with the attached drawing and specific embodiment.

[0019] Figure 1 It is the overhead structure schematic diagram of the utility model;

[0020] Figure 2 It is the overhead structure schematic diagram of the utility model;

[0021] Figure 3 It is the inside structure schematic diagram of the utility model;

[0022] Figure 4 It is the utility model Figure 1 The enlarged structure schematic diagram of A place in the utility model;

[0023] Figure 5 It is the utility model Figure 3 The enlarged structure schematic diagram of B place in the utility model.

[0024] As shown in the figure: 1, gas station storage tank; 2, gas outlet pipe; 3, fixed sleeve; 4, jacking sleeve; 5, fixed ring one; 6, sealing ring; 7, sealing groove; 8, pressure sensor; 9, connecting block one; 10, lifting sleeve; 11, electric push rod; 12, fixed ring two; 13, electromagnetic valve; 14, output pipeline; 15, output valve; 16, output port; 17, check valve; 18, connecting positioning cylinder; 19, L-shaped card frame; 20, fixed cylinder; 21, screw; 22, pneumatic telescopic rod; 23, ball hinge; 24, non-slip pad; 25, connecting block two. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0026] Embodiment 1

[0027] The preferred embodiment of the high-efficiency pressure stabilizing device for bulk gas station pipeline provided by the present application is as shown in the figure: Figures 1 to 5 As shown in the figure: a high-efficiency pressure stabilizing device for bulk gas station pipeline, comprising a gas station storage tank 1: a rotating positioning mechanism is arranged at the bottom of the gas station storage tank 1, a gas outlet pipe 2 is fixedly connected to the top of the gas station storage tank 1, an electromagnetic valve 13 is fixedly connected to the upper part inside the gas outlet pipe 2, a fixed sleeve 3 is fixedly connected to the outside of the gas outlet pipe 2, a jacking sleeve 4 is insertedly connected to the upper part inside the fixed sleeve 3, a sliding limiting mechanism is arranged between the jacking sleeve 4 and the fixed sleeve 3, a pressure sensor 8 and a connecting block one 9 are fixedly connected to the top of the jacking sleeve 4, a lifting sleeve 10 is fixedly connected to the top of the connecting block one 9, the lifting sleeve 10 is sleeved on the outside of the fixed sleeve 3, a fixed ring two 12 is fixedly connected to the lower part of the outside of the fixed sleeve 3, an electric push rod 11 is fixedly connected to the inside of the lifting sleeve 10, the output end of the electric push rod 11 is fixedly connected with the fixed ring two 12, and a pipeline output mechanism is arranged on both sides of the gas outlet pipe 2.

[0028] It should be noted that the existing gas station pipeline still has certain deficiencies, which still needs to be manually relieved, the bursting disc needs to be reinstalled after being used for blasting, and the internal gas is easy to leak outward, which is not conducive to the maintenance of the use environment.

[0029] In the embodiment, when the internal pressure of the gas station storage tank 1 is too large, the electromagnetic valve 13 is automatically started to release pressure to the inside of the fixed sleeve 3, when the released gas density is large, the lifting sleeve 4 in the fixed sleeve 3 can be adapted, so as to push the lifting sleeve 4 upward, the pressure sensor 8 between the lifting sleeve 10 and the lifting sleeve 4 detects the leakage condition of the inside of the fixed sleeve 3 and the lifting sleeve 4, avoids gas leakage, when the pressure decreases in the use process, the retracting electric push rod 11 is started to press the lifting sleeve 4, the fixed sleeve 3 and the electromagnetic valve 13 can be pressurized to the inside of the gas station storage tank 1, and the gas leakage is avoided.

[0030] In the further preferred embodiment of the utility model, the rotating positioning mechanism comprises a connecting positioning cylinder 18, an L-shaped clamping frame 19, a fixing cylinder 20, a screw 21, a pneumatic telescopic rod 22, a ball hinge 23 and an anti-skid pad 24, the connecting positioning cylinder 18 is fixedly connected to the both sides of the gas station storage tank 1, a connecting block two 25 is insertedly connected in the connecting positioning cylinder 18, the L-shaped clamping frame 19 is fixedly connected to the outside of the both sides of the connecting block two 25, and the top of the L-shaped clamping frame 19 is fixedly connected to the connecting block two 25 on the both sides of the gas station storage tank 1.

[0031] In the embodiment, the L-shaped clamping frame 19 can limit the gas station storage tank 1 to rotate in the U-shaped clamping angle of the L-shaped clamping frame 19, so that the gas station storage tank 1 can be adjusted in use position after the L-shaped clamping frame 19 is fixed.

[0032] In the further preferred embodiment of the utility model, the bottom of the L-shaped clamping frame 19 is fixedly connected with the fixing cylinder 20, the screw 21 is arranged between the both sides of the L-shaped clamping frame 19 and the fixing cylinder 20, the L-shaped clamping frame 19 is fixedly connected with the fixing cylinder 20 through the screw 21, the pneumatic telescopic rod 22 is arranged between the bottom of the L-shaped clamping frame 19 and the fixing cylinder 20, the ball hinge 23 is arranged at the both ends of the pneumatic telescopic rod 22, the both ends of the pneumatic telescopic rod 22 are rotatably connected with the gas station storage tank 1 and the L-shaped clamping frame 19 through the ball hinge 23, and the anti-skid pad 24 is fixedly connected to the four corners of the bottom of the fixing cylinder 20.

[0033] In the embodiment, the L-shaped clamping frame 19 and the fixing cylinder 20 are fixedly used through the screw 21, and then the pneumatic telescopic rod 22 is started to position the gas station storage tank 1 after being pushed to a corresponding angle from the bottom.

[0034] The further preferable embodiment of the utility model further relates to a sliding limiting mechanism, the sliding limiting mechanism comprises a fixed ring one 5, a sealing ring 6 and a sealing groove 7, the outer ring of the bottom of the jacking sleeve pipe 4 is fixedly connected with the fixed ring one 5, the outer ring of the fixed ring one 5 is fixedly connected with the sealing ring 6, the inner mouth of the fixed sleeve pipe 3 is provided with the sealing groove 7, the fixed ring one 5 and the sealing ring 6 are limited to the inside lifting sliding of the sealing groove 7, and the connecting block one 9 is fixed to the central position of the top of the jacking sleeve pipe 4.

[0035] In the embodiment, the sealing ring 6 can seal the inside of the sealing groove 7, so that the jacking sleeve pipe 4 can be jacked in a sealed state during pressure relief lifting.

[0036] Embodiment 2

[0037] On the basis of embodiment 1, the preferable embodiment of the utility model provides a kind of bulk gas station pipeline high-efficiency pressure stabilizing equipment as shown in Figures 1 to 5 As shown in the figure: solenoid valve 13 is communicated with the inside of fixed sleeve pipe 3 and jacking sleeve pipe 4, and pressure sensor 8 is located between lifting sleeve 10 and jacking sleeve pipe 4.

[0038] The further preferable embodiment of the utility model further relates to a pipeline output mechanism, the pipeline output mechanism comprises output pipeline 14, output valve 15, output port 16 and check valve 17, output pipeline 14 is fixed to the both sides of outlet pipe 2 and is communicated with the inside of outlet pipe 2, the inside of the other end of output pipeline 14 is fixedly connected with output valve 15, the top of output valve 15 is fixedly connected with output port 16, and the other end of output port 16 is fixedly connected with check valve 17.

[0039] In the embodiment, the output valve 15 can be opened and closed to the output of the output port 16, and the check valve 17 can avoid external air pressure backflow.

[0040] The further preferable embodiment of the utility model further relates to a pipeline output mechanism, the pipeline output mechanism comprises output pipeline 14, output valve 15, output port 16 and check valve 17, output pipeline 14 is fixed to the both sides of outlet pipe 2 and is communicated with the inside of outlet pipe 2, the inside of the other end of output pipeline 14 is fixedly connected with output valve 15, the top of output valve 15 is fixedly connected with output port 16, and the other end of output port 16 is fixedly connected with check valve 17.

[0041] The further preferable embodiment of the utility model further relates to a pipeline output mechanism, the pipeline output mechanism comprises output pipeline 14, output valve 15, output port 16 and check valve 17, output pipeline 14 is fixed to the both sides of outlet pipe 2 and is communicated with the inside of outlet pipe 2, the inside of the other end of output pipeline 14 is fixedly connected with output valve 15, the top of output valve 15 is fixedly connected with output port 16, and the other end of output port 16 is fixedly connected with check valve 17.

[0042] The utility model discloses a gas station storage tank position adjusting device, which comprises a fixed sleeve 3, a gas station storage tank 1, a lifting sleeve 10, a pressure sensor 8, a telescopic sleeve 4, a telescopic electric push rod 11, a solenoid valve 13 and a L-shaped card frame 19.

[0043] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-efficiency pressure stabilizing device for a pipeline of a bulk gas station, characterized by, The utility model provides a gas station storage tank (1) is provided with rotating positioning mechanism at bottom, and the top of gas station storage tank (1) is fixedly connected with gas outlet pipe (2), the upper portion of inside of gas outlet pipe (2) is fixedly connected with electromagnetic valve (13), and the outside of gas outlet pipe (2) is fixedly connected with fixed sleeve (3), and the upper portion of inside of fixed sleeve (3) is insertedly connected with jacking sleeve (4), and the sliding limiting mechanism is arranged between jacking sleeve (4) and fixed sleeve (3), and the top of jacking sleeve (4) is fixedly connected with pressure sensor (8) and connecting block one (9), and the top of connecting block one (9) is fixedly connected with lifting sleeve (10), and lifting sleeve (10) is sleeved on the outside of fixed sleeve (3), and the lower portion of the outside of fixed sleeve (3) is fixedly connected with fixed ring two (12), and the inside of lifting sleeve (10) is fixedly connected with electric push rod (11), and the output end of electric push rod (11) is fixedly connected with fixed ring two (12), and the both sides of gas outlet pipe (2) are provided with pipeline output mechanism.

2. The high-efficiency pressure stabilizing device for pipelines of bulk gas stations according to claim 1, characterized in that, The rotating positioning mechanism includes connecting positioning cylinder (18), L-shaped clamping frame (19), fixed cylinder (20), screw (21), pneumatic telescopic rod (22), ball hinge (23) and anti-skid pad (24), both sides of the gas station storage tank (1) are fixedly connected with the connecting positioning cylinder (18), the inside of the connecting positioning cylinder (18) is insertedly connected with the connecting block two (25), the outside of both sides connecting block two (25) is fixedly connected with the L-shaped clamping frame (19), and both ends of the top of the L-shaped clamping frame (19) are fixedly connected with the connecting block two (25) of both sides of the gas station storage tank (1).

3. A high-efficiency pressure stabilizing device for pipelines of bulk gas stations according to claim 2, characterized in that, The bottom of the L-shaped clamping frame (19) is fixedly connected with the fixed cylinder (20), the both sides of the L-shaped clamping frame (19) and the fixed cylinder (20) are provided with the screw (21), the L-shaped clamping frame (19) and the fixed cylinder (20) are fixedly connected through the screw (21), the bottom of the gas station storage tank (1) and the L-shaped clamping frame (19) are provided with the pneumatic telescopic rod (22), both ends of the pneumatic telescopic rod (22) are provided with the ball hinge (23), and both ends of the pneumatic telescopic rod (22) are rotatably connected with the gas station storage tank (1) and the L-shaped clamping frame (19) through the ball hinge (23), and the four corners of the bottom of the fixed cylinder (20) are fixedly connected with the anti-skid pad (24).

4. The high-efficiency pressure stabilizing device for pipelines of bulk gas stations according to claim 1, characterized in that, The sliding limiting mechanism includes fixed ring one (5), sealing ring (6) and sealing groove (7), the outer ring of the bottom of the jacking sleeve (4) is fixedly connected with the fixed ring one (5), the outer ring of the fixed ring one (5) is fixedly connected with the sealing ring (6), and the inner opening of the fixed sleeve (3) is provided with the sealing groove (7), the fixed ring one (5) and the sealing ring (6) are limited to the inside lifting and sliding of the sealing groove (7), and the connecting block one (9) is fixed at the central position of the top of the jacking sleeve (4).

5. A high-efficiency pressure stabilizing device for pipelines of bulk gas stations according to claim 4, characterized in that, The electromagnetic valve (13) is in communication with the interiors of the fixed sleeve (3) and the jacking sleeve (4), and the pressure sensor (8) is located between the lifting sleeve (10) and the jacking sleeve (4).

6. A high-efficiency pressure stabilizing device for pipelines of bulk gas stations according to claim 1, characterized in that, The pipeline output mechanism comprises an output pipeline (14), an output valve (15), an output port (16) and a check valve (17), the output pipeline (14) is fixed on both sides of the air outlet pipe (2) and in communication with the interior of the air outlet pipe (2), the interior of the other end of the output pipeline (14) is fixedly connected with the output valve (15), the top of the output valve (15) is fixedly connected with the output port (16), and the other end of the output port (16) is fixedly connected with the check valve (17).

7. A high-efficiency pressure stabilizing device for a pipeline of a bulk gas station according to claim 6, characterized in that, The output pipeline (14) and the electromagnetic valve (13) are both fixed with the air outlet pipe (2), and the output pipelines (14) on both sides are away from the electromagnetic valve (13), and the output pipelines (14) on both sides are symmetrically arranged on both sides of the air outlet pipe (2).

8. A high-efficiency pressure stabilizing device for a pipeline of a bulk gas station according to claim 7, characterized in that, The pipeline output mechanism is provided with two, and the two pipeline output mechanisms are respectively distributed on both sides of the air outlet pipe (2), and the pipeline output mechanism is located below and away from the electromagnetic valve (13).

Citation Information

Patent Citations

  • Double-safety emptying valve group

    CN213982987U