Overpressure protector of leakage-free gas drainer
By introducing an elbow-type inner cylinder, a sealing valve plate and a limiting baffle assembly into the gas drainer, the problems of leakage and poor water injection under high pressure in the gas drainer are solved, and a safe and stable drainage process is achieved.
Patent Information
- Application Number
- CN202422686163.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Traditional gas drainers are easily punctured under high pressure, causing gas leakage. When they need to be filled with water after installation, the protector valve plate may close prematurely, preventing normal water filling.
An overpressure protector for a leak-free gas drainer is designed. It includes an elbow-type inner cylinder, a sealing valve plate assembly, a limiting baffle assembly, and a guide plate. By controlling the flow of water and gas, it prevents the valve plate from closing prematurely and blocks the drain outlet under high pressure to prevent gas leakage.
It effectively prevents the gas drainer from leaking under high pressure, ensures the normal water seal filling process, avoids damage and gas leakage caused by premature closure of the valve plate, and provides additional safety protection.
Smart Images
Figure CN223345181U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gas drainer equipment, in particular to an overpressure protector for a leak-free gas drainer. Background Art
[0002] During gas transportation through pipelines, as the temperature gradually drops, some saturated gas condenses into water and settles at the bottom of the pipeline. The function of a gas drainer is to remove condensed water, accumulated water, and dirt through the drainer to ensure the normal transportation of the gas medium.
[0003] Traditional gas drainers are generally water-sealed gas drainers, which completely rely on the water seal height to seal the gas pressure. However, when the production conditions cause the gas pressure to rise a lot instantly, the gas drainer is easily punctured, causing a large amount of gas to leak out and cause serious accidents.
[0004] To address these issues, a drain overpressure protection or gas leakage prevention device has been developed. It consists of a drain body, a water inlet pipe, a leak prevention device, and an overflow pipe. The drain works by allowing condensed water in the gas pipeline to flow through the water inlet pipe, the leak prevention device, and the overflow pipe. The water seals in the high- and low-pressure chambers trap the gas within the drain, thus draining water without releasing any gas. However, due to the large pressure fluctuations in the gas pipeline network, once the water seal pressure is exceeded, gas overpressure can occur.
[0005] In addition, after the gas drainer is installed, it needs to be filled with water to form a water seal. When filling water, the water flow rate is too high, which will cause the protector valve plate to close prematurely, making the drainer unable to fill with water normally. The water seal pressure cannot meet the rated pressure, and the drainer cannot drain normally, which will cause the gas to penetrate the drainer and damage the product. Utility Model Content
[0006] The purpose of the utility model is to provide an overpressure protector for a leak-free gas drainer with a simple structure and stable performance. At the same time, it can also solve the problem in the prior art that the gas drainer needs to be filled with water after installation, which causes the protector valve plate to close prematurely and the drainer cannot be filled with water normally.
[0007] The technical solution adopted by the utility model to solve its technical problems is: an overpressure protector for a leak-free gas drainer, comprising an overpressure protector body, a water inlet pipe A, an anti-leakage device and an overflow pipe arranged on the outside of the gas drainer, a water inlet opening being provided in the middle of the right side of the overpressure protector body, and an overflow opening being provided in the upper left side of the overpressure protector body, characterized in that: the anti-leakage device is provided in the overpressure protector body, comprising an elbow-type inner cylinder, a sealing valve plate assembly, a limiting baffle assembly and a guide plate, the elbow-type inner cylinder is composed of a transverse main pipe with an inclined opening at one end and a straight opening at the other end, a lower branch pipe, a right baffle, a left inclined baffle and a lower bottom plate to form a special-shaped elbow-type inner cylinder, the lower branch pipe is docked with an opening slightly to the left of the center below the transverse main pipe, so that a large right shoulder and a small left shoulder structure are formed on the lower part of the transverse main pipe, and the right baffle is located at The straight opening side of the horizontal main pipe is used to block the straight opening on the right side. The left inclined baffle is located on the inclined opening side of the horizontal main pipe and is used to block the inclined opening on the left side. The lower bottom plate is located at the lower part of the lower branch pipe and is used to block the lower branch pipe. A water inlet is provided on the right baffle, and a leakage prevention device drain pipe is provided on the lower bottom plate. One end of the water inlet pipe is connected to the water outlet of the drainer, and the other end passes through the water inlet of the overpressure protector body and the water inlet on the right baffle and is inserted into the special-shaped elbow type inner cylinder. Drain port A, drain port B and overpressure protector drain pipe are provided at the bottom of the overpressure protector body. The leakage prevention device drain pipe passes through the drain port B at the bottom of the overpressure protector body and extends out of the overpressure protector body to discharge the sludge at the bottom of the leakage prevention device; a drain port is provided on the left inclined baffle, and the drain port is arranged higher than the water outlet position of the water inlet pipe;
[0008] The sealing valve plate assembly A is arranged on the inner side of the drain outlet of the elbow-type inner cylinder, and includes a hinge support A, a valve stem A and a valve plate A. One end of the valve stem A is hinged to the hinge support A provided in the left inclined baffle, and the other end is fixedly connected to the valve plate A, so that the valve plate A is movably and sealedly connected to the drain outlet of the elbow-type inner cylinder;
[0009] The water inlet pipe A is composed of a straight pipe section and a curved pipe section. The outlet channel of the curved pipe section is a water outlet channel that gradually decreases from large to small. A gas exhaust port is opened on the upper edge of the water outlet of the curved pipe section. A shaft seat is provided at the upper end of the water outlet of the water inlet pipe A.
[0010] The limiting baffle assembly includes a water retaining groove, a baffle, a limiting counterweight rod and a rotating shaft. The limiting counterweight rod is a right-angled trapezoidal limiting counterweight rod, and the baffle is a vertical plate arranged at the end of the water retaining groove. The trapezoidal bottom edge of the right-angled trapezoidal limiting counterweight rod is fitted and fixedly connected with the vertical edge of the baffle, and the length of the baffle is longer than the length of the trapezoidal bottom edge of the right-angled trapezoidal limiting counterweight rod. Axis holes are opened on both sides of the water retaining groove, and the rotating shaft is fixedly connected to the shaft seat through the axle holes, and the end of the right-angled trapezoidal limiting counterweight rod is overlapped on the small protrusion on the left side of the horizontal main pipe. The water retaining groove is placed on the inner side of the water inlet, and limiting nuts are also provided on the rotating shafts on both sides of the water retaining groove; a guide plate is inclined at the elbow in the water inlet pipe.
[0011] Preferably, an outer valve plate assembly is further provided at the lower part of the overflow port in the overpressure protector body, and the outer valve plate assembly includes a water baffle, a hinge support B, a valve stem B and a counterweight valve plate B. A water inlet pipe B is provided on the water baffle, and the hinge support B is fixedly installed on the upper part of the water baffle. One end of the valve stem B is hinged on the hinge support B, and the other end is fixedly connected to the valve plate B, so that the valve plate B and the water inlet pipe B are movably and sealedly connected. A limit baffle B is also provided on the inner wall of the overpressure protector body, and the limit baffle B is located at the upper part of the outer valve plate assembly.
[0012] Preferably, a concave water collecting plate is provided on the small protrusion on the left side of the horizontal main pipe, and a limit pin is provided on the left inclined baffle, and the limit pin is located below the water outlet, which is used to limit the upward range of the right-angled trapezoidal limit counterweight rod.
[0013] Preferably, the inclination of the guide plate is 135°-140°
[0014] Preferably, the diameter of the transverse main pipe is φ159, and the diameter of the lower branch pipe is φ133.
[0015] The advantages of the utility model are:
[0016] Since the utility model provides a limiting baffle assembly and a guide plate on the elbow-type cylinder, under normal water flow, the limiting baffle assembly is under the action of the limiting counterweight rod, the normal water volume is very small, the water level rises slowly, and it overflows automatically when it is full. At this time, the limiting baffle assembly does not move; when the water flow is large, under the action of the guide plate, the water flow hits the water retaining groove from top to bottom, and the water retaining groove begins to sink under the action of the large water volume. The limiting counterweight rod moves up to block the valve plate, ensuring that the valve plate is in an open state, so that the overpressure protector can drain water normally, and will not cause the problem of the protector valve plate closing prematurely.
[0017] When the gas pressure is over-pressured, the gas has a light specific gravity. When the gas breaks through the water seal of the drainer, the gas rushes into the overpressure protector, which is usually attached to the upper wall of the water inlet pipe. Under the action of the guide plate and the elbow, the gas is discharged from the gas exhaust port and contacts the valve plate. The gas pushes the sealing valve plate from the bottom to the top to seal the drain port, preventing gas leakage and avoiding major accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural diagram of the present utility model.
[0019] Figure 2 The intention is to enlarge the structure of the leak prevention device.
[0020] Figure 3 It is a structural diagram of the water inlet pipe A.
[0021] Figure 4 It is a side structural diagram of the limiting baffle assembly.
[0022] Figure 5 Schematic diagram of the limiting baffle assembly with shaft.
[0023] Figure 6 It is a structural diagram of a concave water collecting plate.
[0024] Figure 7 This is a structural diagram of another embodiment of the present invention. DETAILED DESCRIPTION
[0025] The following is a schematic structural diagram of the present invention in conjunction with the accompanying drawings.
[0026] like Figures 1-6As shown, the utility model is an overpressure protector for a leak-free gas drainer, comprising an overpressure protector body 1, a water inlet pipe A2, a leak prevention device and an overflow pipe 7 arranged outside the gas drainer. A water inlet 11 is provided in the middle of the right side of the overpressure protector body 1, and an overflow port 12 is provided in the upper left side of the overpressure protector body 1. The utility model is characterized in that the leak prevention device is provided in the overpressure protector body 1, and comprises an elbow-type inner cylinder, a sealing valve plate assembly 4, a limiting baffle assembly 5 and a guide plate 6. The elbow-type inner tube is composed of a transverse main tube 31 with an inclined opening at one end and a vertical opening at the other end, a lower branch tube 32, a right baffle 33, a left inclined baffle 34 and a lower bottom plate 35 to form a special-shaped elbow-type inner tube. The diameter of the transverse main tube 31 is φ159, and the diameter of the lower branch tube 32 is φ133; the lower branch tube 32 is connected to the opening on the left side of the center below the transverse main tube 31, so that the lower part of the transverse main tube forms a large right shoulder 312 and a small left shoulder 311 structure. The right baffle 3 3 is located on the vertical opening side of the horizontal main pipe 31, used to block the vertical opening on the right side. The left inclined baffle 34 is set on the inclined opening side of the horizontal main pipe 31, used to block the inclined opening on the left side. The lower bottom plate 35 is located at the lower part of the lower branch pipe 32, used to block the lower branch pipe 32. A water inlet 331 is opened on the right baffle 33, and a leakage prevention device drain pipe 36 is provided on the lower bottom plate 35. One end of the water inlet pipe 2 is connected to the water outlet of the drain, and the other end passes through the overpressure protector body to enter The water inlet 11 and the water inlet 331 on the right baffle are inserted into the special-shaped elbow-type inner cylinder. A sewage outlet A13, a sewage outlet B14, and an overpressure protector sewage pipe 15 are opened at the bottom of the overpressure protector body 1. The leakage prevention device sewage pipe 36 passes through the sewage outlet B14 at the bottom of the overpressure protector body and extends outside the overpressure protector body 1 to discharge the sludge at the bottom of the leakage prevention device. A drainage outlet 341 is opened on the left inclined baffle, and the drainage outlet 341 is arranged at a higher position than the water outlet of the water inlet pipe 2.
[0027] The sealing valve plate assembly A4 is disposed inside the drain outlet 341 of the elbow-type inner cylinder and includes a hinge support A41, a valve stem A42, and a valve plate A43. One end of the valve stem A42 is hinged to the hinge support A41 disposed in the left inclined baffle, and the other end is fixedly connected to the valve plate A43, so that the valve plate A43 is movably and sealedly connected to the drain outlet 341 of the elbow-type inner cylinder.
[0028] like Figure 3 As shown, the water inlet pipe 2 is composed of a straight pipe section 21 and a curved pipe section 22. The outlet channel of the curved pipe section 22 is a water outlet channel that gradually narrows from large to small. A gas exhaust port 23 is opened on the upper edge of the water outlet of the curved pipe section 22. A shaft seat is provided at the upper end of the water outlet of the water inlet pipe, which is not shown in the figure.
[0029] The limiting baffle assembly 5 includes a water retaining groove 51, a baffle 52, a limiting counterweight rod 53 and a rotating shaft 54. The limiting counterweight rod 53 is a right-angled trapezoidal limiting counterweight rod, and the baffle 52 is a vertical plate arranged at the end of the water retaining groove 51. The trapezoidal bottom edge of the right-angled trapezoidal limiting counterweight rod 53 is fixedly connected to the vertical edge of the baffle 52, and the length of the baffle 52 is longer than the length of the trapezoidal bottom edge of the right-angled trapezoidal limiting counterweight rod 53. Axis holes are provided on both sides of the water retaining groove 51, and the rotating shaft 54 is fixedly connected to the shaft seat through the axle holes, and the end of the right-angled trapezoidal limiting counterweight rod 53 is overlapped on the small protrusion 311 on the left side of the transverse main pipe. The water retaining groove 51 is placed on the inner side of the water inlet, and limiting nuts 55 are also provided on the rotating shafts on both sides of the water retaining groove 51; a guide plate 6 is inclined at the elbow in the water inlet pipe 2.
[0030] like Figure 7 As shown, as an embodiment, the utility model is further provided with an outer valve plate assembly at the lower part of the overflow port in the overpressure protector body 1, and the outer valve plate assembly includes a water baffle 81, a hinge support B82, a valve stem B84 and a counterweight valve plate B85, and a water inlet pipe B83 is provided on the water baffle 81, and the hinge support 82 is fixedly installed on the upper part of the water baffle 81, and one end of the valve stem B84 is hinged on the hinge support B82, and the other end is fixedly connected to the valve plate B85, so that the valve plate B85 is movably and sealedly connected to the water inlet pipe B83, and a limit baffle B86 is further provided on the inner wall of the overpressure protector body 1, and the limit baffle B86 is located at the upper part of the outer valve plate assembly, and the weight of the counterweight valve plate B84 on the upper part of the outer valve plate assembly is to ensure that the drainer can drain water under normal circumstances.
[0031] This structure is designed to prevent the water seal drain from leaking or evaporating, rendering it ineffective. Simultaneously, when the gas line pressure fluctuates and fluctuates to a very low level, sealing valve plate assembly A4 becomes ineffective. The outer valve plate assembly effectively seals the gas, providing secondary protection. Normally, the outer valve plate is closed, isolating it from the atmosphere and creating a buildup of pressure. If gas pressure rises, sealing valve plate assembly A4 activates prematurely, sealing the gas and preventing leakage.
[0032] The utility model further provides a concave water collecting plate 313 on the left side small protrusion 311 of the horizontal main pipe 31, and a limit pin 342 is provided on the left side inclined baffle 34, and the limit pin 342 is located below the water outlet, which is used to limit the upward range of the right-angled trapezoidal limit counterweight rod 53.
[0033] The inclination of the guide plate 6 described in the present invention is 135°-140°. This enables the water entering the water inlet pipe 2 to flow out of the water outlet along the top of the upper guide plate, thereby playing the role of slow flow.
[0034] After the overpressure protector of the utility model is installed in place, water is injected into the overpressure protector. When the water flow is large, the water retaining groove begins to sink under the action of the large amount of water, driving the limit counterweight rod to move up to block the valve plate, ensuring that the valve plate is in an open state, so that the overpressure protector can be injected with water normally, and the problem of premature closure of the protector valve plate will not be caused, thus ensuring the overall water seal height. Figure 1 shown.
[0035] When gas pressure exceeds the limit, its specific gravity is low. When the gas penetrates the drainer's water seal, it rushes into the overpressure protector, typically adhering to the upper wall of the water inlet pipe. Driven by the guide plate and elbow, the gas is discharged from the gas exhaust port and contacts the valve plate. The gas pushes the sealing valve plate from the bottom to the top, sealing the drain port and preventing gas leakage, thus avoiding major accidents. When the gas network pressure returns to normal, the gas drainer's sealed pressure relief valve plate resets.
[0036] On the basis of the above solution, the utility model provides a drain valve at the drain 313 of the anti-leakage device, which can timely remove the sludge in the anti-leakage device.
[0037] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.
Claims
1. An overpressure protector for a leak-free gas drainer, comprising an overpressure protector body disposed outside the gas drainer, a water inlet pipe, a leak prevention device, and an overflow pipe, a water inlet opening in the middle of the right side of the overpressure protector body, and an overflow opening in the upper left side of the overpressure protector body, characterized in that: The anti-leakage device is arranged in the overpressure protector body, including an elbow-type inner cylinder, a sealing valve plate assembly, a limiting baffle assembly and a guide plate. The elbow-type inner cylinder is composed of a transverse main pipe with an inclined opening at one end and a vertical opening at the other end, a lower branch pipe, a right baffle, a left inclined baffle and a lower bottom plate to form a special-shaped elbow-type inner cylinder. The lower branch pipe is docked with the opening on the left side of the center below the transverse main pipe, so that a large right shoulder and a small left shoulder structure are formed at the lower part of the transverse main pipe. The right baffle is located on the straight opening side of the transverse main pipe for blocking the vertical opening on the right side. The left inclined baffle is located on the inclined opening side of the transverse main pipe for blocking the inclined opening on the left side. The lower bottom plate is located at the lower part of the lower branch pipe for blocking the lower branch pipe. A water inlet is provided, and a leakage prevention device drain pipe is provided on the lower bottom plate. One end of the water inlet pipe is connected to the water outlet of the drainer, and the other end passes through the water inlet of the overpressure protector body and the water inlet on the right baffle and is inserted into the special-shaped elbow-type inner cylinder. Drain port A, drain port B and an overpressure protector drain pipe are provided at the bottom of the overpressure protector body. The leakage prevention device drain pipe passes through drain port B at the bottom of the overpressure protector body and extends out of the overpressure protector body to discharge the sludge at the bottom of the leakage prevention device; a drain port is provided on the left inclined baffle, and the drain port is arranged higher than the water outlet position of the water inlet pipe; The sealing valve plate assembly is arranged on the inner side of the drain outlet of the elbow-type inner cylinder, and includes a hinge support, a valve stem and a valve plate. One end of the valve stem is hinged to the hinge support provided in the left inclined baffle, and the other end is fixedly connected to the valve plate, so that the valve plate is movably and sealedly connected to the drain outlet of the elbow-type inner cylinder; The water inlet pipe is composed of a straight pipe section and a curved pipe section. The outlet channel of the curved pipe section is a water outlet channel that gradually decreases from large to small. A gas exhaust port is opened on the upper edge of the water outlet of the curved pipe section, and a shaft seat is provided at the upper end of the water outlet of the water inlet pipe. The limiting baffle assembly includes a water retaining groove, a baffle, a limiting counterweight rod and a rotating shaft. The limiting counterweight rod is a right-angled trapezoidal limiting counterweight rod, and the baffle is a vertical plate arranged at the end of the water retaining groove. The trapezoidal bottom edge of the right-angled trapezoidal limiting counterweight rod is fitted and fixedly connected with the vertical edge of the baffle, and the length of the baffle is longer than the length of the trapezoidal bottom edge of the right-angled trapezoidal limiting counterweight rod. Axis holes are opened on both sides of the water retaining groove, and the rotating shaft is fixedly connected to the shaft seat through the axle holes, and the end of the right-angled trapezoidal limiting counterweight rod is overlapped on the small protrusion on the left side of the horizontal main pipe. The water retaining groove is placed on the inner side of the water inlet, and limiting nuts are also provided on the rotating shafts on both sides of the water retaining groove; a guide plate is inclined at the elbow in the water inlet pipe.
2. The overpressure protector of the leak-free gas drainer according to claim 1, characterized in that: An outer valve plate assembly is also provided at the lower part of the overflow port in the overpressure protector body. The outer valve plate assembly includes a water baffle, a hinge support B, a valve stem B and a counterweight valve plate B. A water inlet pipe B is provided on the water baffle. The hinge support B is fixedly installed on the upper part of the water baffle. One end of the valve stem B is hinged on the hinge support B, and the other end is fixedly connected to the valve plate B, so that the valve plate B and the water inlet pipe B are movably and sealedly connected. A limit baffle B is also provided on the inner wall of the overpressure protector body, and the limit baffle B is located at the upper part of the outer valve plate assembly.
3. The overpressure protector for a leak-free gas drainer according to claim 1 or 2, characterized in that: The water inlet pipe is composed of a straight pipe section and a curved pipe section. The outlet channel of the curved pipe section is a water outlet channel that gradually shrinks from large to small. A gas exhaust port is opened on the upper edge of the water outlet of the curved pipe section.
4. The overpressure protector of the leak-free gas drainer according to claim 1 or 2, characterized in that: A concave water collecting plate is provided on the small protruding shoulder on the left side of the horizontal main pipe, and a limit pin is provided on the left inclined baffle, and the limit pin is located below the water outlet to limit the upward range of the right-angled trapezoidal limit counterweight rod.
5. The overpressure protector of the non-leakage gas drainer according to claim 1 or 2, characterized in that: The inclination of the guide plate is 135°-140°.
6. The overpressure protector of the leak-free gas drainer according to claim 1 or 2, characterized in that: The diameter of the transverse main pipe is φ159, and the diameter of the lower branch pipe is φ133.