A quick dredging device for a coal gas drainer

Abstract

The utility model discloses a kind of coal gas drainer quick dredging device, belong to coal gas drainage equipment technical field.It includes two gate valves, monitoring mechanism and dredging mechanism, two The gate valve is communicated with downcomer, the gate valve outlet in lower portion is communicated with the connecting inclined pipe that is communicated with coal gas drainer import, the gate valve import in upper portion is communicated with coal gas pipeline export, The monitoring mechanism includes pressure gauge and third dredging ball valve, The pressure gauge and The third dredging ball valve are all arranged on connecting inclined pipe, The dredging mechanism includes first dredging ball valve, second dredging ball valve and connecting pipe, The first dredging ball valve and The second dredging ball valve are all arranged on The connecting inclined pipe;The utility model is applicable to coal gas drainer dredging, can achieve the purpose that directly online quick dredging coal gas drainer without affecting coal gas pipeline operation, make single coal gas pipe network maintenance time length reduce, guarantee the continuous installation operation of coal gas pipe network.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas drainage equipment, and in particular relates to a quick-drainage device for gas drainage. Background Technology

[0002] During the gas generation process, a large amount of moisture, dust and other impurities are carried. It is necessary to remove the moisture, dust and impurities in the gas pipeline through a gas drainer to ensure the safe and stable operation of the gas pipeline network and gas equipment facilities. However, with the long-term operation of the gas drainer, blockage occurs from time to time, causing the drainer to malfunction.

[0003] Previously, gas pipeline drainers could not be cleaned and repaired online while carrying gas. They could only be disassembled and repaired by outsourcing during monthly routine maintenance. This resulted in severe water accumulation in the gas pipeline during daily operation, and the blockage inside the downcomer was increasing, affecting the gas quality during operation and posing significant safety hazards to the gas pipeline. In order to solve the problem of blockage in gas drainers, avoid economic losses and equipment damage caused by production stoppages for maintenance, and ensure the speed and safety of daily maintenance, a rapid unblocking device for gas drainers is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing a quick-drainage device for gas drainers.

[0005] To achieve the above objectives, the utility model adopts the following technical solution: a rapid unblocking device for gas drainers, used for unblocking gas drainers connected to gas pipelines, comprising: Two gate valves are connected by a downcomer pipe. The outlet of the lower gate valve is connected to a connecting bend pipe that is connected to the inlet of the gas drainer. The inlet of the upper gate valve is connected to the outlet of the gas pipeline. The monitoring mechanism includes a pressure gauge and a third unblocking ball valve, both of which are mounted on the connecting bend. A dredging mechanism, comprising a first dredging ball valve, a second dredging ball valve, and a connecting pipe, wherein both the first dredging ball valve and the second dredging ball valve are mounted on the connecting bend. Both the first and second unblocking ball valves are used to connect the connecting pipe and introduce nitrogen gas to unblock the connecting bend.

[0006] By adopting the above technical solution, a pressure gauge is used to determine the blockage situation, and the blockage situation of the connecting bend outlet is confirmed by the third unblocking ball valve. When the connecting bend is blocked, the gas drain connected to it will also be blocked. At this time, nitrogen is introduced through the first unblocking ball valve for purging and cleaning, and nitrogen is introduced to clean the silt and impurities attached to the pipe.

[0007] As a further technical solution, the outer peripheral wall of the connecting bend is connected to three bypass pipes, and the connecting bend is respectively connected to the first unblocking ball valve, the second unblocking ball valve and the third unblocking ball valve through the three bypass pipes.

[0008] By adopting the above technical solution, the first and second unblocking ball valves are connected to the connecting bend via a bypass pipe, thereby achieving segmented unblocking of the connecting bend.

[0009] As a further technical solution, the first unblocking ball valve port is located directly below the gate valve outlet, the second unblocking ball valve port is located directly above the connecting bend outlet, and the third unblocking ball valve is located above the connecting bend outlet and below the second unblocking ball valve.

[0010] By adopting the above technical solution, during the process of unblocking the connecting bend through the first and second unblocking ball valves, the upper gate valve is closed, the first unblocking ball valve is directly opposite the lower gate valve, and nitrogen gas is introduced through the connecting pipe to purge and clean. Then, the lower gate valve is temporarily closed, and a steel bar is inserted through the second unblocking ball valve and enters the gas drain inlet through the connecting bend for loosening and cleaning. Nitrogen gas is then introduced through the connecting pipe to purge and clean, achieving segmented cleaning, improving efficiency, and ensuring the continuous and safe operation of the gas pipeline.

[0011] As a further technical solution, both the first and second unblocking ball valves have threaded plugs installed at the ports away from the bypass pipe.

[0012] By adopting the above technical solution and setting the plug, the ports of the first and second unblocking ball valves are protected when they are not in use, preventing external dust and moisture from entering and causing corrosion, which would affect their use.

[0013] As a further technical solution, the outer peripheral wall of the connecting pipe outlet is provided with threads that are compatible with the first and second unblocking ball valve ports.

[0014] By adopting the above technical solution, the outlet of the connecting pipe is threadedly connected to the ports of the first unblocking ball valve, the second unblocking ball valve and the third unblocking ball valve, so as to realize quick disassembly and quick assembly of the connecting pipe to the first unblocking ball valve and the second unblocking ball valve.

[0015] As a further technical solution, the pressure gauge interface is connected to a metal hose, the inlet of the metal hose is connected to a three-way plug valve with one port connected to the connecting bend, and the pressure gauge is located between the first unblocking ball valve and the second unblocking ball valve.

[0016] By adopting the above technical solution, the connection between the pressure gauge and the connecting bend can be disconnected by operating the three-way plug valve, which facilitates quick replacement and maintenance of the pressure gauge. In addition, the metal hose can absorb the vibration transmitted to the connecting bend during the operation of the gas pipeline and gas drainer, avoiding direct transmission to the pressure gauge and preventing frequent swings or damage to the instrument pointer.

[0017] As a further technical solution, the first unblocking ball valve connecting to the bypass pipe is located at the left corner of the connecting bend, and the third unblocking ball valve connecting to the bypass pipe is located at the right corner of the connecting bend.

[0018] By adopting the above technical solution, it is found that impurities are prone to accumulate at the corners of the connecting pipe. By installing a first unblocking ball valve and a third unblocking ball valve at the two corners, the accumulated impurities can be easily broken up, unblocked and discharged quickly, thus avoiding damage at the corners of the connecting pipe.

[0019] As a further technical solution, the connecting pipe can be either a plastic flexible tube or a stainless steel corrugated pipe.

[0020] By adopting the above technical solution, the material of the connecting pipe can be selected according to the actual use, ensuring the safety of nitrogen use.

[0021] Compared with the prior art, the beneficial effects of this utility model are: 1. This gas drainer rapid unblocking device adopts a segmented unblocking structure of the unblocking mechanism. Nitrogen gas is introduced through the connecting pipe for rapid cleaning, so that the entire device can directly and quickly unblock the gas drainer online without affecting the operation of the gas pipeline. This reduces the maintenance time of a single gas pipeline network and ensures the continuous installation and operation of the gas pipeline network. 2. This gas drainer's rapid unblocking device uses a first unblocking ball valve to purge with nitrogen through a connecting pipe. Then, it uses a second unblocking ball valve to unblock with steel bars and water to clean, or it uses a connecting pipe to dredge with nitrogen. This avoids the use of chemical cleaning agents, reduces hazardous waste generation, and is environmentally friendly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] In the diagram: 1. Gate valve; 2. Downcomer; 3. Connecting bend; 4. Gas pipeline; 5. First unblocking ball valve; 6. Second unblocking ball valve; 7. Third unblocking ball valve; 8. Bypass pipe; 9. Three-way plug valve; 10. Pressure gauge; 11. Connecting pipe. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] When gas is generated, it carries impurities such as moisture and dust, which need to be drained by a drainer to ensure the safe operation of the pipeline network and equipment. However, the drainer is prone to blockage after long-term operation. It was originally impossible to unclog it online while it was running with gas, and it could only be disassembled and repaired by outsourcing on a monthly basis. This resulted in water accumulation and increased impurities in the pipeline network, which affected the quality of gas and posed a great safety hazard. In order to solve the blockage, avoid production stoppage losses, and ensure quick and safe maintenance, a gas drainer quick unblocking device is proposed.

[0027] like Figure 1 As shown, the specific solution of the embodiment is as follows: A gas drainer quick unblocking device is used to unblock a gas drainer connected to a gas pipeline 4. It includes two gate valves 1, a monitoring mechanism and an unblocking mechanism. A downcomer 2 is connected between the two gate valves 1. The outlet of the lower gate valve 1 is connected to a connecting bend 3 connected to the inlet of the gas drainer. The inlet of the upper gate valve 1 is connected to the outlet of the gas pipeline 4. The monitoring mechanism includes a pressure gauge 10 and a third unblocking ball valve 7. Both the pressure gauge 10 and the third unblocking ball valve 7 are installed on the connecting bend 3. The unblocking mechanism includes a first unblocking ball valve 5, a second unblocking ball valve 6 and a connecting pipe 11. Both the first unblocking ball valve 5 and the second unblocking ball valve 6 are installed on the connecting bend 3. Both the first unblocking ball valve 5 and the second unblocking ball valve 6 are used to introduce nitrogen gas into the connecting pipe 11 to unblock the connecting bend 3.

[0028] Specifically, after pressure gauge 10 determines the blockage, the third unblocking ball valve 7 confirms the blockage at the outlet of connecting bend 3. After blockage, the first unblocking ball valve 5 and the second unblocking ball valve 6 are used to connect the connecting bend 3 via bypass pipe 8. This allows nitrogen to be introduced into the connecting bend 3 in sections via connecting pipe 11 for cleaning, enabling the entire device to directly and quickly unblock the gas drainer online without affecting the operation of the gas pipeline 4. This reduces the maintenance time of a single gas pipeline network and ensures the continuous installation and operation of the gas pipeline network.

[0029] The third unblocking ball valve 7 is used for daily spot inspections to check whether there is any blockage at the outlet of the connecting bend 3, which is beneficial for the daily maintenance of the connecting gas pipeline 4.

[0030] It should be noted that nitrogen gas is introduced through connecting pipe 11 using a high-speed nitrogen jet of 120m / s, which, together with the insertion of steel bars for unblocking, forms a pneumatic-mechanical synergy, making the overall unblocking efficiency of the device better.

[0031] In addition, two gate valves 1 are provided. When the upper gate valve 1 needs maintenance or replacement, the lower gate valve 1 can cut off and isolate the gas to prevent impurities from leaking directly. The lower gate valve 1 can also serve as a redundancy function. Since coal gas is somewhat dangerous, if the upper gate valve 1 cannot be completely sealed and closed, the lower gate valve 1 can still cut off the gas, ensuring the safety of the dredging operation.

[0032] In this embodiment, the outer peripheral wall of the connecting bend 3 is connected to three bypass pipes 8. The connecting bend 3 is connected to a first unblocking ball valve 5, a second unblocking ball valve 6, and a third unblocking ball valve 7 through the three bypass pipes 8 respectively. The port of the first unblocking ball valve 5 is located directly below the outlet of the lower gate valve 1. The port of the second unblocking ball valve 6 is located directly above the outlet of the connecting bend 3. The third unblocking ball valve 7 is located above the outlet of the connecting bend 3 and below the second unblocking ball valve 6. The ports of the first unblocking ball valve 5 and the second unblocking ball valve 6 that are away from the bypass pipes 8 are both equipped with plugs with threaded seals. The first unblocking ball valve 5 is connected to the bypass pipe 8 at the left corner of the connecting bend 3, and the third unblocking ball valve 9 is connected to the bypass pipe 8 at the right corner of the connecting bend 3.

[0033] Specifically, when the outlet of connecting bend 3 is blocked, close the upper gate valve 1, remove the plug, quickly install the first unblocking ball valve 5 with the connecting pipe 11, and purge with nitrogen. At the same time, observe the status of the gas drain and adjust the nitrogen pressure as needed to ensure the purging effect. After purging, close the first unblocking ball valve 5 and the lower gate valve 1, remove the plug of the second unblocking ball valve 6, open it, insert a steel bar to unclog and pump water, remove the connecting pipe 11 on the first unblocking ball valve 5, install it on the port of the second unblocking ball valve 6, open the second unblocking ball valve 6, and purge with nitrogen to continue purging and cleaning, thereby unblocking the gas drain. The pneumatic-mechanical collaboration achieves segmented and rapid unblocking, avoiding the use of chemical cleaning agents and reducing the generation of hazardous waste.

[0034] The plug is designed to protect the ports of the first unblocking ball valve 5 and the second unblocking ball valve 6, preventing dust and moisture from entering and causing corrosion.

[0035] In addition, impurities are prone to accumulate at the bends and corners of the connecting pipes. By installing a first unblocking ball valve and a third unblocking ball valve at the two corners, the accumulated impurities can be easily broken up and unblocked, thus avoiding damage at the bends and corners of the connecting pipes.

[0036] In this embodiment, the outer peripheral wall of the outlet of the connecting pipe 11 is provided with threads that are compatible with the port of the first unblocking ball valve 5 and the port of the second unblocking ball valve 6. The connecting pipe can be either a plastic hose or a stainless steel corrugated pipe.

[0037] It should be noted that the connecting pipe 11 has an outlet thread, which enables quick installation and disassembly of the connecting pipe 11 with the first unblocking ball valve 5 and the second unblocking ball valve 6. Thus, when the entire device needs to be cleaned, nitrogen can be quickly introduced through the connecting pipe 11 into the first unblocking ball valve 5, the second unblocking ball valve 6, or the third unblocking ball valve 7 for cleaning.

[0038] Among them, the first unblocking ball valve 5, the second unblocking ball valve 6, and the third unblocking ball valve 7 are all either DN50 ball valves or DN80 ball valves, which can be selected according to the actual use; the connecting pipe can be made of materials according to the actual use to ensure the safety of nitrogen use.

[0039] In this embodiment, the pressure gauge 10 interface is connected to a metal hose, and the inlet of the metal hose is connected to a three-way plug valve 9 with one port connected to the connecting bend 3. The pressure gauge 10 is located between the first unblocking ball valve 5 and the second unblocking ball valve 6.

[0040] Specifically, when pressure gauge 10 needs maintenance, the connection between pressure gauge 10 and connecting bend 3 can be disconnected by operating the three-way plug valve 9, which facilitates quick replacement and maintenance of pressure gauge 10.

[0041] In addition, the installation of the metal hose can absorb the vibration transmitted to the connecting bend 3 during the operation of the gas pipeline 4 and the gas drainer, and avoid direct transmission to the pressure gauge 10, thus preventing the instrument pointer from swinging frequently or being damaged.

[0042] The working principle of the above embodiments is as follows: After pressure gauge 10 determines the blockage, the third unblocking ball valve 7 confirms the blockage at the outlet of connecting bend 3. Once the outlet of connecting bend 3 is blocked, the upper gate valve 1 is closed, the plug is removed, the first unblocking ball valve 5 is quickly installed with the connecting pipe 11, and nitrogen is introduced for purging. At the same time, the status of the gas drainer is observed, and the nitrogen pressure is adjusted as needed to ensure the purging effect. After purging, the first unblocking ball valve 5 is closed, the plug of the second unblocking ball valve 6 is removed, and the valve is opened. A steel bar is inserted for unblocking and water is pumped in. The connecting pipe 11 on the first unblocking ball valve 5 is removed and installed on the port of the second unblocking ball valve 6. The second unblocking ball valve 6 is opened, and nitrogen is introduced to continue purging and clearing, thereby unblocking the gas drainer. Pneumatic-mechanical coordination achieves segmented and rapid unblocking, avoiding the use of chemical cleaning agents and reducing the generation of hazardous waste.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-drainage device for gas drainers, used for draining gas drainers connected to gas pipelines, characterized in that, include: Two gate valves are connected by a downcomer pipe. The outlet of the lower gate valve is connected to a connecting bend pipe that is connected to the inlet of the gas drainer. The inlet of the upper gate valve is connected to the outlet of the gas pipeline. The monitoring mechanism includes a pressure gauge and a third unblocking ball valve, both of which are mounted on the connecting bend. The unblocking mechanism includes a first unblocking ball valve, a second unblocking ball valve, and a connecting pipe. The first unblocking ball valve, the second unblocking ball valve, and the third unblocking ball valve are all installed on the connecting bend. Both the first and second unblocking ball valves are used to connect the connecting pipe and introduce nitrogen gas to unblock the connecting bend.

2. The gas drain quick unblocking device according to claim 1, characterized in that: The outer peripheral wall of the connecting bend is connected to three bypass pipes, and the connecting bend is respectively connected to the first unblocking ball valve, the second unblocking ball valve and the third unblocking ball valve through the three bypass pipes.

3. The gas drain quick unblocking device according to claim 1, characterized in that: The first unblocking ball valve port is located directly below the gate valve outlet, the second unblocking ball valve port is located directly above the connecting bend outlet, and the third unblocking ball valve is located above the connecting bend outlet and below the second unblocking ball valve.

4. The gas drain quick unblocking device according to claim 1, characterized in that: Both the first and second unblocking ball valves have threaded plugs installed at the ports furthest from the bypass pipe.

5. A rapid unblocking device for a gas drain according to claim 1, characterized in that: The outer peripheral wall of the connecting pipe outlet is provided with threads that are compatible with the first and second unblocking ball valve ports.

6. A quick-drainage device for a gas drain according to claim 1, characterized in that: The pressure gauge interface is connected to a metal hose, and the inlet of the metal hose is connected to a three-way plug valve with one port connected to the connecting bend. The pressure gauge is located between the first unblocking ball valve and the second unblocking ball valve.

7. A rapid unblocking device for a gas drain according to claim 1, characterized in that: The first unblocking ball valve connecting to the bypass pipe is located at the left corner of the connecting bend, and the third unblocking ball valve connecting to the bypass pipe is located at the right corner of the connecting bend.

8. A quick-drainage device for a gas drain according to claim 1, characterized in that: The connecting pipe can be either a plastic flexible tube or a stainless steel corrugated pipe.

Images