Automatic drainage device for detecting pressure of gas storage tank
By replacing the liquid level sensor with a buoyancy probe and buoyancy ring structure, floating liquid level detection of the gas storage tank is realized, which solves the problem of false alarms caused by impurity adhesion in traditional devices. Furthermore, the airtightness is improved through a combined installation structure, ensuring the stable operation of the gas storage tank.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI ANENG SAFETY TECH CONSULTING CO LTD
- Filing Date
- 2025-11-20
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional gas tank drainage devices detect changes in liquid level using level sensors. However, these sensors are prone to false alarms due to the adhesion of oil, rust, and particulate impurities, which can affect their performance and potentially corrode the sensors, reducing their accuracy and lifespan.
Employing a buoyancy probe and buoyancy ring structure, it uses buoyancy to detect water accumulation at the bottom of the gas storage tank. The buoyancy ring drives a telescopic rod to open a solenoid valve for drainage, replacing the liquid level sensor control. Combined with a modular installation structure, it improves airtightness and prevents leakage.
It improves the stability and airtightness of drainage operations, prevents gas leakage from the storage tank, and extends the service life of the equipment.
Smart Images
Figure CN224470086U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of drainage devices, specifically an automatic drainage device for detecting the pressure of a gas storage tank. Background Technology
[0002] The automatic drainage device for compressed air tanks is an automated equipment used in compressed air systems. Through a built-in controller and pressure sensor, it monitors the pressure inside the tank in real time and, according to preset time intervals, only opens the drain valve momentarily when the pressure is sufficient, automatically discharging the condensate accumulated at the bottom of the tank. This design effectively avoids wasting compressed air, ensures the safe operation of the tank, and extends the service life of downstream air-consuming equipment, achieving highly efficient and energy-saving fully automated drainage.
[0003] Patent document CN108953991A discloses a drainage device for an air tank in engineering machinery, relating to the field of engineering machinery. It includes an air tank with an electromagnetic water valve and a liquid level sensor at its bottom; the electromagnetic water valve, liquid level sensor, and manual switch are electrically connected to a controller containing a timing module; the controller is connected to an engine operation signal and an alarm indicator light; when the water level in the air tank reaches a predetermined position, the liquid level sensor outputs a signal to the controller, illuminating the alarm indicator light and outputting a control signal to the electromagnetic water valve to control its opening and closing; additionally, the controller uses the engine operation signal to start a cumulative working time calculation for the entire machine; when the working time reaches a set value, the alarm indicator light sounds.
[0004] The aforementioned gas tank drainage device has certain shortcomings in use. Traditional gas tank drainage devices mainly rely on level sensors to detect changes in the liquid level inside the tank and control solenoid valves to perform drainage operations. The water at the bottom of the gas tank usually contains oil, rust, and particulate impurities. These contaminants can easily adhere to the sensor's probe, leading to false alarms and affecting its performance. Secondly, the condensate may be corrosive, and long-term use can erode the sensor's sensitive elements, affecting its accuracy and lifespan. Utility Model Content
[0005] This invention provides an automatic drainage device for pressure detection in gas storage tanks. It solves the problem that existing gas storage tank drainage devices primarily rely on level sensors to detect changes in the internal liquid level and control a solenoid valve for drainage. However, the water at the bottom of the gas storage tank often contains oil, rust, and particulate impurities. These contaminants easily adhere to the sensor's probe, leading to false alarms and affecting its effectiveness.
[0006] An automatic drainage device for pressure detection of a gas storage tank includes a drainage connector and a docking seat. The drainage connector is fixedly installed on the inner side of the lower end of the docking seat. A solenoid valve is fixedly installed at one end of the drainage connector. A docking rod for use with the solenoid valve is fixedly installed at the middle position of the other end of the drainage connector. A telescopic rod is movably installed at the upper end of the docking rod. A limit switch for use with the telescopic rod is provided at one end of the solenoid valve. A buoyancy probe is fixedly installed on the outer surface of the upper end of the telescopic rod.
[0007] As a further technical solution of this utility model, a buoyancy ring is fixedly installed on the outer side surface of the buoyancy probe. The buoyancy ring has a hollow structure inside. The buoyancy ring can increase the buoyancy of the buoyancy probe. When there is water accumulation at the bottom of the gas storage tank, the buoyancy ring and the buoyancy probe drive the telescopic rod to move upward under the action of buoyancy, thereby causing the telescopic rod to move out of the limit switch, causing the limit switch to pop up, thereby opening the solenoid valve to perform drainage operation.
[0008] As a further technical solution of this utility model, the connecting rod and the drainage connector are fixed together by several sets of connecting frames, which are distributed in a ring at equal intervals. The connecting frames play a fixing role in the installation of the connecting rod.
[0009] As a further technical solution of this utility model, a drainage groove is provided between the drainage connector and the connecting frame. The drainage groove is connected to one end of the solenoid valve. When the solenoid valve is opened, the water at the bottom of the tank is discharged downward through the drainage groove by the solenoid valve.
[0010] As a further technical solution of this utility model, a knob is movably installed at the front end of the solenoid valve, and a liquid outlet is provided at the lower end of the solenoid valve. In the power failure state, the opening and closing of the solenoid valve can be manually controlled by rotating the knob.
[0011] As a further technical solution of this utility model, a docking seat is installed at the upper end of the drain connector. The drain connector and the docking seat are fixed together by a threaded structure. During installation, the docking seat is fixed at the drain port of the gas storage tank by a fixing flange, and then the threaded structure is used to complete the docking and fixing between the drain connector and the docking seat.
[0012] As a further technical solution of this utility model, the upper inner side of the drain connector is provided with an annular groove. The annular groove is an annular structure. By using the annular groove in conjunction with the docking ring, the airtightness between the docking seat and the drain connector can be improved, and the leakage of high-pressure gas in the gas storage tank can be avoided.
[0013] As a further technical solution of this utility model, a docking ring for use with an annular groove is fixedly installed on the inner side of the docking seat. The annular groove and the docking ring are docked with each other, and the docking ring is an annular structure.
[0014] As a further technical solution of this utility model, a fixing flange is fixedly installed on the outer surface of one end of the docking seat. The surface of the fixing flange has several sets of circular slots distributed in a ring. The fixing flange and bolts are used to complete the docking and fixing between the docking seat and the gas storage tank.
[0015] As a further technical solution of this utility model, the inner surface of the docking seat is provided with a threaded groove for use with the drainage connector, and the lower end of the telescopic rod is provided with a limiting ring. The setting of the limiting ring can prevent the telescopic rod and the docking rod from falling off. The diameter of the limiting ring is larger than the diameter of the telescopic rod, and the limiting ring is a ring-shaped structure.
[0016] The beneficial effects of this utility model are as follows: By using a buoyancy probe, this utility model enables the automatic drainage device for pressure detection of the gas storage tank to have a floating liquid level detection structure, replacing the traditional liquid level sensor to control the solenoid valve. This solves the problem of the influence of oil, rust, and particulate impurities on liquid level detection and improves the stability of its automatic drainage operation. During operation, the buoyancy ring increases the buoyancy of the buoyancy probe. When there is water at the bottom of the gas storage tank, the buoyancy ring and buoyancy probe move the telescopic rod upward under the action of buoyancy, causing the telescopic rod to move out of the limit switch, causing the limit switch to pop up, thereby opening the solenoid valve to perform drainage operation. When the water inside the gas storage tank is drained, the buoyancy ring and buoyancy probe lose buoyancy, thereby moving the telescopic rod downward, causing the lower end of the telescopic rod to contact the limit switch, triggering the limit switch, thereby closing the solenoid valve and preventing the gas inside the gas storage tank from leaking out.
[0017] By setting up a docking seat and docking ring, the automatic drainage device for pressure detection of the gas storage tank has a modular installation structure, allowing for installation at different sizes. It also optimizes the airtight structure to prevent leakage from the gas storage tank. By replacing the docking seat with one of the corresponding diameter, the docking seat and the gas storage tank are fixed together using a fixing flange and bolts. Then, a threaded structure is used to fix the drain connector to the docking seat, allowing the annular groove and docking ring to align. This improves the airtightness of the docking seat and drain connector during connection, preventing high-pressure gas leakage from the gas storage tank and completing the modular installation of the automatic drainage device. Attached Figure Description
[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is an overall structural diagram of the drainage connector in this utility model;
[0021] Figure 3 This is an overall structural diagram of the docking seat in this utility model.
[0022] In the diagram: 1. Drain connector; 2. Connecting seat; 3. Fixed flange; 4. Knob; 5. Solenoid valve; 6. Connecting rod; 7. Buoyancy probe; 8. Buoyancy ring; 9. Telescopic rod; 10. Connecting frame; 11. Annular groove; 12. Threaded groove; 13. Connecting ring; 14. Drainage channel. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] like Figures 1-3 As shown, an automatic drainage device for detecting the pressure of a gas storage tank includes a drainage connector 1 and a docking seat 2. The drainage connector 1 is fixedly installed on the lower inner side of the docking seat 2. A solenoid valve 5 is fixedly installed on one end of the drainage connector 1. A docking rod 6 for use with the solenoid valve 5 is fixedly installed at the middle position of the other end of the drainage connector 1. A telescopic rod 9 is movably installed on the upper end of the docking rod 6. A limit switch for use with the telescopic rod 9 is provided on one end of the solenoid valve 5. A buoyancy probe 7 is fixedly installed on the upper outer surface of the telescopic rod 9.
[0025] A buoyancy ring 8 is fixedly installed on the outer side of the buoyancy probe 7. The buoyancy ring 8 has a hollow structure inside. The buoyancy ring 8 can increase the buoyancy of the buoyancy probe 7. When there is water at the bottom of the gas tank, the buoyancy ring 8 and the buoyancy probe 7 drive the telescopic rod 9 to move upward under the action of buoyancy, so that the telescopic rod 9 moves out of the limit switch, causing the limit switch to pop up, thereby opening the solenoid valve 5 to perform drainage operation.
[0026] The connecting rod 6 and the drainage connector 1 are fixed together by several sets of connecting frames 10. The several sets of connecting frames 10 are distributed in a ring with equal spacing. The connecting frames 10 play a role in fixing the installation of the connecting rod 6.
[0027] A drainage groove 14 is provided between the drainage connector 1 and the connecting frame 10. The drainage groove 14 is connected to one end of the solenoid valve 5. When the solenoid valve 5 is opened, the water at the bottom of the tank is discharged downward through the drainage groove 14 and the solenoid valve 5.
[0028] A knob 4 is movably mounted on the front end of the solenoid valve 5, and an outlet is provided at the lower end of the solenoid valve 5. In the event of a power outage, the opening and closing of the solenoid valve 5 can be manually controlled by rotating the knob 4.
[0029] The upper end of the drain connector 1 is equipped with a docking seat 2. The drain connector 1 and the docking seat 2 are fixed together by a threaded structure. During installation, the docking seat 2 is fixed at the drain port of the gas storage tank by the fixing flange 3, and then the threaded structure is used to complete the docking and fixing between the drain connector 1 and the docking seat 2.
[0030] The upper inner side of the drain connector 1 is provided with an annular groove 11. The annular groove 11 is an annular structure. By using the annular groove 11 in conjunction with the docking ring 13, the airtightness between the docking seat 2 and the drain connector 1 can be improved, and the leakage of high-pressure gas in the gas storage tank can be avoided.
[0031] A docking ring 13 is fixedly installed on the inner side of the docking seat 2 to cooperate with the annular groove 11. The annular groove 11 and the docking ring 13 are connected to each other, and the docking ring 13 has an overall annular structure.
[0032] A fixing flange 3 is fixedly installed on the outer surface of one end of the docking seat 2. The surface of the fixing flange 3 has several sets of circular grooves distributed in a ring. The fixing flange 3 is used in conjunction with bolts to complete the docking and fixing between the docking seat 2 and the gas storage tank.
[0033] The inner surface of the docking seat 2 is provided with a threaded groove 12 for use with the drainage connector 1. The lower end of the telescopic rod 9 is provided with a limiting ring. The setting of the limiting ring can prevent the telescopic rod 9 and the docking rod 6 from falling off. The diameter of the limiting ring is larger than the diameter of the telescopic rod 9, and the limiting ring is a ring-shaped structure.
[0034] An automatic drainage device for pressure detection of a gas storage tank is disclosed. During operation, the buoyancy ring 8 increases the buoyancy of the buoyancy probe 7. When there is water accumulation at the bottom of the gas storage tank, the buoyancy ring 8 and the buoyancy probe 7 move the telescopic rod 9 upward under the action of buoyancy, thereby causing the telescopic rod 9 to move out of the limit switch, causing the limit switch to pop up, thereby opening the solenoid valve 5 to perform drainage operation. After the water inside the gas storage tank is drained, the buoyancy ring 8 and the buoyancy probe 7 lose buoyancy, thereby causing the telescopic rod 9 to move downward, so that the lower end of the telescopic rod 9 contacts the limit switch, triggering the limit switch, thereby closing the solenoid valve 5 and preventing the gas inside the gas storage tank from leaking out.
[0035] By setting the docking seat 2 and the docking retaining ring 13, the automatic drainage device for pressure detection of the gas storage tank has a modular installation structure, which can be used in different sized installation positions. At the same time, its airtight structure is optimized to avoid leakage of the gas storage tank. By replacing the docking seat 2 with the corresponding diameter, the docking seat 2 and the gas storage tank are fixed together by using the fixing flange 3 and bolts. Then, the drain connector 1 and the docking seat 2 are fixed together by using the threaded structure. This allows the annular retaining groove 11 and the docking retaining ring 13 to dock with each other, which can improve the airtightness when docking seat 2 and drain connector 1 are connected, avoid the leakage of high-pressure gas in the gas storage tank, and complete the modular installation of the automatic drainage device.
[0036] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.
Claims
1. An automatic drainage device for detecting pressure in a gas storage tank, characterized in that, The device includes a drain connector (1) and a docking seat (2). The drain connector (1) is fixedly installed on the inner side of the lower end of the docking seat (2). A solenoid valve (5) is fixedly installed on one end of the drain connector (1). A docking rod (6) for use with the solenoid valve (5) is fixedly installed at the middle position of the other end of the drain connector (1). A telescopic rod (9) is movably installed on the upper end of the docking rod (6). A limit switch for use with the telescopic rod (9) is provided on one end of the solenoid valve (5). A buoyancy probe (7) is fixedly installed on the outer surface of the upper end of the telescopic rod (9).
2. The automatic drainage device for detecting pressure in a gas storage tank according to claim 1, characterized in that, A buoyancy ring (8) is fixedly installed on the outer side surface of the buoyancy probe (7), and the interior of the buoyancy ring (8) is a hollow structure.
3. The automatic drainage device for detecting pressure in a gas storage tank according to claim 1, characterized in that, The connecting rod (6) and the drain connector (1) are fixed together by several sets of connecting frames (10), and the several sets of connecting frames (10) are distributed in a ring with equal spacing.
4. The automatic drainage device for detecting pressure in a gas storage tank according to claim 3, characterized in that, A drainage groove (14) is provided between the drainage connector (1) and the connecting frame (10), and the drainage groove (14) is connected to one end of the solenoid valve (5).
5. The automatic drainage device for detecting pressure in a gas storage tank according to claim 1, characterized in that, A knob (4) is movably mounted on the front end of the solenoid valve (5), and an outlet is provided at the lower end of the solenoid valve (5).
6. The automatic drainage device for detecting pressure in a gas storage tank according to claim 1, characterized in that, The upper end of the drain connector (1) is equipped with a docking seat (2), and the drain connector (1) and the docking seat (2) are fixed together by a threaded structure.
7. The automatic drainage device for detecting pressure in a gas storage tank according to claim 6, characterized in that, The upper inner side of the drain connector (1) is provided with an annular groove (11), and the annular groove (11) is an annular structure.
8. The automatic drainage device for detecting pressure in a gas storage tank according to claim 7, characterized in that, The inner side of the docking seat (2) is fixedly installed with a docking ring (13) that works with the annular groove (11), and the annular groove (11) and the docking ring (13) are connected to each other.
9. The automatic drainage device for detecting pressure in a gas storage tank according to claim 8, characterized in that, A fixing flange (3) is fixedly installed on the outer surface of one end of the docking seat (2), and the surface of the fixing flange (3) has several sets of circular slots distributed in a ring.
10. The automatic drainage device for detecting pressure in a gas storage tank according to claim 1, characterized in that, The inner surface of the docking seat (2) is provided with a threaded groove (12) for use with the drainage connector (1), and the lower end of the telescopic rod (9) is provided with a limiting ring.