Device for online closed dredging of blocked nozzle

Abstract

The utility model relates to the field of chemical engineering devices, in particular to a device for online sealing and dredging a blocked nozzle. The problems that a nozzle in an existing oil refining and chemical engineering device is prone to being blocked, dredging success rate is low, equipment is prone to being damaged in the dredging process, and danger coefficient is high are mainly solved. The device comprises a butt flange (12) and a dredging rod (5), and is characterized in that one side of the butt flange (12) is connected with a pressurizing cavity (7) through a positioning sleeve (11), the side wall of the pressurizing cavity (7) is connected with a pressurizing pipeline (9), the end of the pressurizing cavity (7) is connected with a sealing gland (6), and the sealing gland (6) is connected with the dredging rod (5). One end of the dredging rod (5) sequentially penetrates through the sealing gland (6), the pressurizing cavity (7), the positioning sleeve (11) and the butt flange (12) and then extends into the nozzle, and the other end of the dredging rod (5) is connected with the handle (1). The device for online closed dredging of the blocked nozzle is convenient and safe to operate, the nozzle dredging success rate is high, the dredging process is sealed, and leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to an online sealed and unblocked nozzle device. Background Art

[0002] Various nozzles in oil refining and chemical plants are often clogged due to coking or the entry of debris. The current methods for unblocking nozzles are usually: using a sledgehammer to vibrate the outside of the nozzle, adjusting the flow and pressure of the medium entering the nozzle, connecting a 3.5MPa medium-pressure steam line to the nozzle inlet, and taking the risk of using a brazing tool to unblock and then quickly close the valve. The success rate of these methods is not high, and the expected effect cannot be achieved. If the unblocking is not thorough, it will cause secondary blockage, which is time-consuming and labor-intensive, with high labor costs, high risk factors, and may damage the equipment or pipeline itself. It may also cause the medium to leak out and cause burns to personnel or spontaneous combustion of oil products. Summary of the invention

[0003] In order to overcome the shortcomings of nozzles in existing oil refining and chemical equipment that are easily clogged and have a low success rate in unclogging, equipment is easily damaged during the unclogging process, and the risk factor is high, the utility model provides an online closed device for unclogging clogged nozzles. The online closed device for unclogging clogged nozzles is easy and safe to operate, has a high success rate in unclogging nozzles, and the unclogging process is sealed to avoid leakage.

[0004] The technical solution of the utility model is: an online closed device for unclogging blocked nozzles, comprising a docking flange and an unclogging rod, one side of the docking flange is connected to a pressurized cavity through a positioning sleeve, a pressurized pipeline is connected to the side wall of the pressurized cavity, and a sealing gland is connected to the end of the pressurized cavity. One end of the unclogging rod passes through the sealing gland, the pressurized cavity, the positioning sleeve and the docking flange in sequence and then extends into the interior of the nozzle, and the other end is connected to a handle.

[0005] Furthermore, a sealing packing is provided in the cavity formed between the pressurized cavity, the sealing gland and the outer surface of the dredging rod.

[0006] Furthermore, a sliding rod is connected between the dredging rod and the handle, and the outside of the sliding rod is slidably connected to a sliding hammer.

[0007] Furthermore, a stopper is provided at one end of the slide rod connected to the dredging rod, and the slide hammer is located between the stopper and the handle.

[0008] Furthermore, the pressurized pipeline is provided with a valve and a pressure gauge.

[0009] Furthermore, the outer surface of the dredging rod is provided with threads, and is connected to the sealing cover through threads.

[0010] Furthermore, the first single rod end of the dredging rod located at one end of the docking flange is a pointed end.

[0011] Furthermore, the dredging rod includes a plurality of single rods, and two adjacent single rods are threadedly connected.

[0012] The utility model has the following beneficial effects: due to the adoption of the above scheme, the docking flange is connected to the valve at the root of the nozzle, thereby fixing the device as a whole, and the nozzle can be unblocked by rotating the unblocking rod, which saves manpower and operation time in actual operation, and saves the material cost required for wiring. By using steam backblowing, it is possible to judge whether the nozzle is unblocked by observing the pressure gauge, and the backblowing steam protection will not cause secondary blockage of the nozzle and the root valve, with a high success rate and strong reliability, and can meet the requirements for unblocking blocked nozzles. The pressurized cavity and the unblocking rod are sealed by packing, so as to achieve the purpose of sealing and unblocking the nozzle. The fully closed operation will not leak the medium, will not cause pollution, and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure, 1-handle, 2-slide rod, 3-slide hammer, 4-stopper, 5-dredging rod, 6-sealing gland, 7-pressurization chamber, 8-pressure gauge, 9-pressurization pipeline, 10-valve, 11-positioning sleeve, 12-joint flange, 13-sealing packing. DETAILED DESCRIPTION

[0015] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by "up", "down", "left", "right", "inside", "outside", "top" and "bottom" are all based on the directions or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0017] Depend on Figure 1As shown, a device for online sealed unclogging of a blocked nozzle comprises a docking flange 12 and an unclogging rod 5. One side of the docking flange 12 is connected to the valve at the root of the nozzle, and the other end is connected to a positioning sleeve 11. The interior of the positioning sleeve 11 contacts the unclogging rod 5, thereby positioning the unclogging rod 5 in the radial direction, so that the unclogging rod 5 and the docking flange 12 remain concentric. The positioning sleeve 11 is connected to a pressurized cavity 7, the interior of the pressurized cavity 7 is hollow, and the other end of the pressurized cavity 7 is connected to a sealing gland 6. One end of the unclogging rod 5 passes through the sealing gland 6, the pressurized cavity 7, the positioning sleeve 11 and the docking flange 12 in sequence and then extends into the interior of the nozzle. In order to ensure the sealing between the pressurized chamber 7 and the dredging rod 5, a groove is provided inside the pressurized chamber 7 at one end close to the sealing gland 6. After the sealing gland 6 is connected to the pressurized chamber 7, the sealing gland 6, the pressurized chamber 7 and the dredging rod 5 jointly form a sealed chamber. A sealing packing 13 is provided in the sealed chamber. After the sealing gland 6 is connected to the pressurized chamber 7, the sealing packing 13 can be compressed so that the dredging rod 5 can still remain sealed when it moves left and right.

[0018] The pressurized cavity 7 is connected to the side wall of the pressurized cavity 7 with a pressurized pipeline 9, which is provided with a valve 10 and a pressure gauge 8. The pressurized cavity 7 can be back-blown with steam through the pressurized pipeline 9 to maintain the pressure in the pressurized cavity 7. During the dredging process, the change in the pressure value can be used to determine whether the dredging is completed, and the back-blowing steam protection will not cause secondary blockage of the nozzle; at the same time, the pressurized cavity 7 and the back-blowing steam can ensure full-process closed dredging to avoid leakage. In actual use, the pressurized cavity 7, the positioning sleeve 11 and the docking flange 12 are connected as a whole, and the dredging rod 5 can be removed.

[0019] The dredging rod 5 is provided with an external thread on the outside, and is connected to the sealing gland 6 through the external thread, so that the dredging rod can be moved forward when it is rotated. The dredging rod 5 can be composed of a plurality of single rods, and two adjacent single rods are threadedly connected, and the end of the first single rod of the dredging rod 5 located at one end of the docking flange 12 is a tip, and the tip can play the role of a drill bit, and drills with the rotation of the dredging rod to ensure that the dredging rod can enter the nozzle at the front end of the nozzle. The outer end of the dredging rod 5 is connected to the handle 1, and a slide bar 2 is connected between the dredging rod 5 and the handle 1, and a slide hammer 3 is slidably connected to the outside of the slide bar 2. A stopper 4 is provided at one end of the slide bar 2 connected to the dredging rod 5, and the slide hammer 3 is located between the stopper 4 and the handle 1, and can slide forward and backward along the slide bar 2. The slide hammer 3 is quickly slid forward and hits the stopper 4, so that a forward force can be applied to the dredging rod 5, which helps to dredge the nozzle.

[0020] During work, if you encounter a clogged nozzle, first close the nozzle root valve, close the medium valve, remove the part of the pipe section behind the nozzle root valve, insert the end of the dredging rod 5 with the drill bit into the pressurized cavity 7, add packing 6-7 into the groove, fasten the sealing cover 6 to the pressurized cavity 7, and rotate the dredging rod 5 so that its front end enters the positioning sleeve 11. In subsequent operations, be careful not to pull the end of the dredging rod 5 out of the positioning sleeve 11. Connect the butt flange 12 to the nozzle root valve, install a gasket at the connection and tighten it with bolts, and connect the pressurized pipeline 9 to the back-blowing steam valve; open the valve 10, observe the pressure of the pressure gauge 8 and the airtightness of this tooling, open the nozzle root valve after no leakage, turn the handle 1 clockwise, or hit the slide hammer 3 to make the dredging rod 5 move forward, after the first section of the dredging rod enters most of the pressurized cavity 7, connect the second section of the dredging rod, according to the length of the dredging rod and the length of the nozzle, until the front end of the dredging rod enters the frontmost nozzle of the nozzle, observe the changes in the back-blowing steam pressure gauge, if the pressure drops, it is determined that the nozzle has been dredged. Turn the handle 1 counterclockwise to make the dredging rod 5 retreat, when it retreats to the root valve plate, close the nozzle root valve, and complete the nozzle dredging. Remove the tooling, restore the pipe section, and resume normal work.

[0021] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An online closed device for unclogging a blocked nozzle, comprising a docking flange (12) and an unclogging rod (5), characterized in that: One side of the docking flange (12) is connected to the pressurized chamber (7) via a positioning sleeve (11), the side wall of the pressurized chamber (7) is connected to a pressurized pipeline (9), the end of the pressurized chamber (7) is connected to a sealing gland (6), one end of the dredging rod (5) passes through the sealing gland (6), the pressurized chamber (7), the positioning sleeve (11) and the docking flange (12) in sequence and then extends into the interior of the nozzle, and the other end is connected to a handle (1).

2. The device for online sealed unclogging of a blocked nozzle according to claim 1, characterized in that: A sealing packing (13) is provided in the cavity formed between the pressurized cavity (7), the sealing gland (6) and the outer surface of the dredging rod (5).

3. The device for online sealed unclogging of nozzles according to claim 2, characterized in that: A sliding rod (2) is connected between the dredging rod (5) and the handle (1), and the sliding rod (2) is externally slidably connected to a sliding hammer (3).

4. The device for online sealed unclogging of a blocked nozzle according to claim 3, characterized in that: A stopper (4) is provided at one end of the slide rod (2) connected to the dredging rod (5), and the slide hammer (3) is located between the stopper (4) and the handle (1).

5. The device for online sealed unclogging of a blocked nozzle according to claim 4, characterized in that: The pressurized pipeline (9) is provided with a valve (10) and a pressure gauge (8).

6. The device for online sealed unclogging of a blocked nozzle according to claim 1, characterized in that: The outer surface of the dredging rod (5) is provided with threads, and is connected to the sealing gland (6) via the threads.

7. The device for online sealed unclogging of a blocked nozzle according to claim 6, characterized in that: The first single rod end of the dredging rod (5) located at one end of the docking flange (12) is a tip.

8. The device for online sealed unclogging of a blocked nozzle according to claim 7, characterized in that: The dredging rod (5) comprises a plurality of single rods, and two adjacent single rods are threadedly connected.

Images