Under-pressure dredging device for easily-blocked pressure tap of chemical equipment

Abstract

The utility model relates to the technical field of chemical equipment, in particular to an under-pressure dredging device for an easily-blocked pressure tap of chemical equipment, which comprises a butt joint pipe, a stainless steel hydraulic oil cylinder and a piston rod. One end of the piston rod is provided with front and rear arc-shaped steel pads and a universal ball bolt, one side of the universal ball bolt is provided with a steel wire cleaning head and a cleaning head mounting bottom plate, and the other end of the piston rod is provided with a piston pressing and fixing nut and a piston body. The device has the beneficial effects that the device does not need to stop running in the production process, can clean and dredge the process measurement pressure tapping interface of the device under pressure, is used for regularly cleaning and dredging the pressure tapping interface in an on-line manner under pressure, and well solves the problem that the pressure tapping interface is easy to generate dirt and blockage in the running process of various devices. The problems that a measuring instrument is large in error and even cannot effectively measure process parameters due to smudginess, blockage and the like of the pressure tapping interface are solved, operation of the whole production device is guaranteed, and safety accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a pressure-clearing device for a pressure-taking port that is easily blocked in chemical equipment. Background Art

[0002] At present, in the fields of coal chemical black water, gray water flow measurement, slurry measurement and other chemical plant process measurement, due to the high content of black water, gray water or slurry and solid particles, the process materials of many chemical plants have the characteristics of viscosity and easy crystallization. The pressure ports and short pressure pipes of conventional measuring devices are prone to deposition and blockage. As the service cycle increases, the pressure ports and measuring tubes are prone to accumulation of dirt and scaling, resulting in blockage, which seriously affects the measurement accuracy of process parameters such as pressure, flow, and pressure difference, and even makes them impossible to measure.

[0003] In the prior art, in the process measurement system of the pressurized gasification device, since the black water and gray water in the process contain a large amount of coal powder and ash particles, it is very easy to cause the pressure tapping port of the measuring device to become dirty and blocked, causing large errors in the measuring instrument or even the inability to effectively measure the process parameters, seriously affecting the stable operation of the entire production device and even leading to the occurrence of serious safety accidents. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure-clearing device for easily blocked pressure tappings of chemical equipment, so as to solve the problem proposed in the above-mentioned background technology that in the process measurement system of a pressurized gasification device, since black water and gray water contain a large amount of coal powder and ash particles in the process, it is very easy to cause the pressure tapping of the measuring device to become dirty and blocked, causing large errors in the measuring instrument or even making it impossible to effectively measure the process parameters, seriously affecting the stable operation of the entire production device and even leading to the occurrence of serious safety accidents.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a pressure-clearing device for easily blocked pressure-taking ports of chemical equipment, the pressure-clearing device for easily blocked pressure-taking ports of chemical equipment comprising:

[0006] A butt-joint pipe, both ends of which are provided with connecting flanges and sealing gaskets, the butt-joint pipe is connected with a connecting pipe port, and a medium sealing stuffing box is provided inside the butt-joint pipe;

[0007] A stainless steel hydraulic cylinder is connected to the butt pipe, the stainless steel hydraulic cylinder is connected to a hydraulic oil interface 1 and a hydraulic oil interface 2, and one end of the stainless steel hydraulic cylinder is fixedly connected to a flange;

[0008] The piston rod is located inside the stainless steel hydraulic cylinder. One end of the piston rod is provided with front and rear arc steel pads, a universal ball head bolt and a ball head bolt threaded pressure cap. One side of the universal ball head bolt is provided with a wire cleaning head and a cleaning head mounting base plate. The other end of the piston rod is provided with a piston clamping fixing nut and a piston body. The outer wall of the piston body is provided with several polyurethane hydraulic oil sealing rings.

[0009] Preferably, the flange is connected with fixing bolts, the flange and the connecting flange on one end of the butt pipe are sealed and fixedly connected by fixing bolts and sealing gaskets, and the outer wall of the butt pipe is fixedly connected to the connecting pipe opening.

[0010] Preferably, the medium sealing stuffing box includes metal reinforced flexible graphite filler, a bone polyurethane hydraulic oil sealing ring and a filler threaded sleeve, the bone polyurethane hydraulic oil sealing ring is fixedly connected to the inner wall of one end of the butt pipe, and the metal reinforced flexible graphite filler and the filler threaded sleeve are sleeved on the outer wall of one end of the piston rod.

[0011] Preferably, the outer wall of one end of the stainless steel hydraulic cylinder close to the flange is fixedly connected to hydraulic oil interface 1, the side wall of one end of the stainless steel hydraulic cylinder away from the flange is fixedly connected to hydraulic oil interface 2, and high-sensitivity Hall magnetic sensing switches are fixedly connected at both ends of the outer walls opposite to the hydraulic oil interface 1.

[0012] Preferably, the piston rod is located at one end of the stainless steel hydraulic cylinder and is fixedly connected to the piston body on the outer wall, and one end of the piston rod passes through the piston body and is threadedly connected to the piston clamping and fixing nut.

[0013] Preferably, a plurality of the polyurethane hydraulic oil sealing rings are fixedly connected to the outer wall of the piston body, and a strong magnetic piston position signaling ring is provided on the piston body between two adjacent polyurethane hydraulic oil sealing rings.

[0014] Preferably, the interior of one end of the piston rod away from the piston body is connected to the front and rear arc steel pads, the front and rear arc steel pads are movably connected to the universal ball head bolt, the universal ball head bolt is threadedly connected to the ball head bolt threaded nut, and the ball head bolt threaded nut is connected to one end of the piston rod.

[0015] Preferably, one end of the universal ball head bolt away from the front and rear arc-shaped steel pads is threadedly fixedly connected to the cleaning head mounting base plate, and the side wall of the other end of the cleaning head mounting base plate is fixedly connected to the wire cleaning head.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] A new type of device can be used to clean and unclog the process measurement pressure-taking interfaces of the aforementioned equipment under pressure during the operation of the production unit without stopping the equipment. It is used for regular online cleaning and unclogging of pressure taking interfaces that are prone to dirt and blockage. It effectively solves the problem of large errors in measuring instruments or even inability to effectively measure process parameters caused by dirt and blockage in the pressure taking interfaces during the operation of the aforementioned types of equipment, thereby ensuring the safe and stable operation of the entire production unit and providing a strong guarantee for further reducing the occurrence of production safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall half-section structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement at the center A;

[0021] Figure 4 For this utility model Figure 2 A schematic diagram of the structure enlarged at B in the middle;

[0022] Figure 5 This is a schematic diagram of the system principle of the utility model.

[0023] In the figure: 1. Connecting flange; 2. Sealing gasket; 3. Connecting pipe mouth; 4. Fixing bolt; 5. Hydraulic oil interface 1; 6. Stainless steel hydraulic cylinder; 7. Hydraulic oil interface 2; 8. High-sensitivity Hall magnetic sensitive switch; 9. Flange; 10. Butt pipe; 11. Metal-reinforced flexible graphite filler; 12. Bone polyurethane hydraulic oil sealing ring; 13. Piston rod; 14. Steel wire cleaning head; 15. Cleaning head mounting base; 16. Filling threaded sleeve; 17. Front and rear arc steel pads; 18. Universal ball head bolt; 19. Ball head bolt threaded cap; 20. Polyurethane hydraulic oil sealing ring; 21. Piston clamping fixing nut; 22. Piston body; 23. Strong magnetic piston position signal ring. DETAILED DESCRIPTION

[0024] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0028] Embodiment 1:

[0029] See also Figures 1 to 4 The utility model provides a technical solution: a pressure-clearing device for easily blocked pressure-taking ports of chemical equipment, the pressure-clearing device for easily blocked pressure-taking ports of chemical equipment comprising:

[0030] A butt-joined pipe 10, both ends of which are provided with connecting flanges 1 and sealing gaskets 2, the butt-joined pipe 10 is connected with a connecting pipe port 3, and a medium sealing stuffing box is provided inside the butt-joined pipe 10; a flange 9 is connected with fixing bolts 4, the flange 9 and the connecting flange 1 at one end of the butt-joined pipe 10 are sealed and fixedly connected through fixing bolts 4 and sealing gaskets 2, and the outer wall of the butt-joined pipe 10 is fixedly connected with the connecting pipe port 3; the medium sealing stuffing box comprises a metal-reinforced flexible graphite packing 11, a bone polyurethane hydraulic oil sealing ring 12 and a packing threaded pressing sleeve 16, the bone polyurethane hydraulic oil sealing ring 12 is fixedly connected with the inner side wall of one end of the butt-joined pipe 10, and the metal-reinforced flexible graphite packing 11 and the packing threaded pressing sleeve 16 are sleeved on the outer wall of one end of the piston rod 13;

[0031] The flange 1 and the sealing gasket 2 can be connected to the flange of the full-bore ball valve of the equipment to ensure the sealing effect. In addition, an independent stuffing box is used, and the flexible graphite stuffing reinforced by inconel600 metal wire is adopted to ensure that there will be no leakage of process medium during online pressure operation; and the connecting pipe mouth 3 is located behind the wire cleaning head 14, and the flushing liquid can be flushed at the same time as the cleaning according to the needs of the site to ensure the best cleaning and dredging effect. It has a safe pressure relief function, which is used to release the residual pressure of the medium after the dredging is completed.

[0032] Embodiment 2:

[0033] See also Figure 1 to Figure 2 On the basis of the first embodiment, it also includes a stainless steel hydraulic cylinder 6, which is connected to the butt pipe 10, the stainless steel hydraulic cylinder 6 is connected to a hydraulic oil interface 1 5 and a hydraulic oil interface 2 7, and one end of the stainless steel hydraulic cylinder 6 is fixedly connected to a flange 9; the outer wall of the stainless steel hydraulic cylinder 6 at one end close to the flange 9 is fixedly connected to the hydraulic oil interface 1 5, the side wall of the stainless steel hydraulic cylinder 6 at one end away from the flange 9 is fixedly connected to the hydraulic oil interface 2 7, and the two ends of the outer wall of the stainless steel hydraulic cylinder 6 opposite to the hydraulic oil interface 1 5 are fixedly connected to a high-sensitivity Hall magnetic sensitive switch 8;

[0034] The hydraulic oil interface 1 5 and the hydraulic oil interface 2 7 are connected to the hydraulic electromagnetic reversing valve through a steel wire reinforced rubber high-pressure hose, and hydraulic pressure (or compressed air) is used as the power source for push-pull operation mode; and a continuously adjustable pressure hydraulic source is designed, which can be adjusted in real time according to the on-site working conditions, so as to ensure the best cleaning effect under the premise of safety.

[0035] Embodiment three:

[0036] See also Figures 1 to 4On the basis of the first embodiment, it also includes a piston rod 13, which is located inside the stainless steel hydraulic cylinder 6, one end of the piston rod 13 is provided with a front and rear arc steel pad 17, a universal ball head bolt 18 and a ball head bolt threaded pressure cap 19, one side of the universal ball head bolt 18 is provided with a wire cleaning head 14 and a cleaning head mounting base plate 15, the other end of the piston rod 13 is provided with a piston clamping fixing nut 21 and a piston body 22, and the outer wall of the piston body 22 is provided with a plurality of polyurethane hydraulic oil sealing rings 20; the outer wall of one end of the piston rod 13 located at the stainless steel hydraulic cylinder 6 is fixedly connected with the piston body 22, and one end of the piston rod 13 that passes through the piston body 22 is threadedly connected with the piston clamping fixing nut 21; a plurality of polyurethane liquid The oil pressure sealing rings 20 are all fixedly connected to the outer wall of the piston body 22, and the piston body 22 is provided with a strong magnetic piston position signaling ring 23 between two adjacent polyurethane hydraulic oil sealing rings 20; the inner part of the end of the piston rod 13 away from the piston body 22 is connected to the front and rear arc steel pads 17, the front and rear arc steel pads 17 are movably connected to the universal ball head bolt 18, the universal ball head bolt 18 is threadedly connected to the ball head bolt threaded pressure cap 19, and the ball head bolt threaded pressure cap 19 is connected to one end of the piston rod 13; the end of the universal ball head bolt 18 away from the front and rear arc steel pads 17 is threadedly fixedly connected to the cleaning head mounting base plate 15, and the side wall of the other end of the cleaning head mounting base plate 15 is fixedly connected to the wire cleaning head 14;

[0037] A movable wire cleaning head 14 is designed inside the butt joint pipe 10 to avoid damage to the pressure port and the inner wall of the pressure short pipe during operation, thereby ensuring the safety of the equipment; and a piston stroke position detection is designed to freely determine the cleaning stroke according to the length of the equipment pressure pipe to avoid the cleaning device entering the interior of the equipment and damaging the internal components of the equipment; in addition, the piston is tightened to fix the nut 21 to form a stroke safety anti-slip structure to ensure that the piston rod 13 will not accidentally fall out under the action of the medium pressure, affecting the safety of the operation.

[0038] Embodiment 4:

[0039] See also Figure 5 , based on the first embodiment, it also includes a system of a pressure-unblocking device for a pressure-taking port of a chemical equipment that is prone to blockage, characterized in that it includes a main controller, a power module, a stroke detection module, a pulse signal transmission module and a mode selection module; the main controller is electrically connected to the power module, and the main controller is signal-connected to the stroke detection module, the pulse signal transmission module and the mode selection module;

[0040] First, close the pressure-taking ball valve, and then remove the measuring instrument from the outlet flange of the pressure-taking ball valve (to ensure safety, this step also requires confirmation that the pressure-taking valve has no leakage before proceeding to the next step), reliably connect and fix the connecting flange 1 of the cleaning and unblocking device to the outlet flange of the pressure-taking ball valve, close the pressure relief valve and the flushing valve on the flushing / pressure relief interface, and connect the flushing hose; then open the flushing valve, start the portable hydraulic source, adjust the hydraulic parameters, and perform the cleaning and unblocking operation; after the operation is completed, operate to confirm that the piston has returned to its position, close the equipment pressure-taking ball valve, close the hydraulic source, close the flushing valve, and open the residual pressure relief valve; confirm that the residual pressure relief is complete, remove the flushing hose and hydraulic hose, remove the cleaning and unblocking device, and restore the installation of the detection instrument to complete the entire operation.

[0041] In actual use, the hydraulic oil interface 1 5 and the hydraulic oil interface 2 7 are connected to the hydraulic electromagnetic reversing valve through a steel wire reinforced rubber high-pressure hose, and hydraulic pressure (or compressed air) is used as the power source for push-pull operation mode; and a continuously adjustable pressure hydraulic source is designed, which can be adjusted in real time according to the on-site working conditions to ensure the best cleaning effect under the premise of safety; in addition, the portable hydraulic source designed by the device adopts an electronically controlled proportional pressure regulating hydraulic valve, which is a continuously adjustable pressure hydraulic source, and a control signal processing circuit with adjustable pulse frequency, pulse amplitude and pulse duty cycle is designed to generate pulsating oil pressure; throttle valves are respectively provided in the inlet and outlet oil circuits of the stainless steel hydraulic cylinder 6 for manually adjusting the piston movement speed to ensure smooth and safe operation, and the portable hydraulic source has two working modes of fixed pressure and pulsating pressure. The pulsating pressure mode can achieve a vibration cleaning effect under some special working conditions; a movable steel wire cleaning head 14 is designed inside the butt pipe 10 , avoid damaging the pressure port and the inner wall of the pressure short pipe during operation, and ensure the safety of the equipment; and design a piston stroke position detection, which can freely determine the cleaning and dredging stroke according to the length of the equipment pressure pipe, and avoid the cleaning device entering the equipment and damaging the internal components of the equipment; in addition, the piston is tightened to fix the nut 21 through the stroke safety anti-detachment structure to ensure that the piston rod 13 will not accidentally fall out under the action of the medium pressure and affect the operation safety; and through the connecting flange 1 and the sealing gasket 2, it can be fixedly connected to the flange of the equipment pressure full-bore ball valve, and the sealing effect is guaranteed. In addition, an independent stuffing box is used, and flexible graphite packing reinforced with inconel600 metal wire is adopted to ensure that no process medium leakage occurs during online pressure operation; and the connecting pipe port 3 is located behind the steel wire cleaning head 14, and flushing with flushing liquid can be carried out while cleaning according to the needs of the site to ensure the best cleaning and dredging effect. It has a safe pressure relief function, which is used to release the residual pressure of the medium after the dredging is completed.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-clearing device for easily blocked pressure ports of chemical equipment, characterized in that: The pressure-clearing device for the easily blocked pressure tapping port of the chemical equipment comprises: A butt-jointed pipe (10), both ends of which are provided with connecting flanges (1) and sealing gaskets (2), the butt-jointed pipe (10) is connected with a connecting pipe opening (3), and a medium sealing stuffing box is provided inside the butt-jointed pipe (10); A stainless steel hydraulic cylinder (6) is connected to the butt pipe (10), the stainless steel hydraulic cylinder (6) is connected to a hydraulic oil interface 1 (5) and a hydraulic oil interface 2 (7), and one end of the stainless steel hydraulic cylinder (6) is fixedly connected to a flange (9); A piston rod (13) is located inside a stainless steel hydraulic cylinder (6). One end of the piston rod (13) is provided with front and rear arc-shaped steel pads (17), a universal ball head bolt (18) and a ball head bolt threaded pressure cap (19). One side of the universal ball head bolt (18) is provided with a wire cleaning head (14) and a cleaning head mounting base plate (15). The other end of the piston rod (13) is provided with a piston clamping fixing nut (21) and a piston body (22). The outer wall of the piston body (22) is provided with a plurality of polyurethane hydraulic oil sealing rings (20).

2. A device for clearing blocked pressure ports of chemical equipment under pressure according to claim 1, characterized in that: The flange (9) is connected with a fixing bolt (4); the flange (9) and a connecting flange (1) at one end of the butt pipe (10) are sealed and fixedly connected via the fixing bolt (4) and a sealing gasket (2); and the outer wall of the butt pipe (10) is fixedly connected to the connecting pipe opening (3).

3. The device for clearing the easily blocked pressure tapping port of chemical equipment according to claim 1 is characterized by: The medium sealing stuffing box comprises a metal-reinforced flexible graphite stuffing (11), a bone polyurethane hydraulic oil sealing ring (12) and a stuffing threaded pressing sleeve (16); the bone polyurethane hydraulic oil sealing ring (12) is fixedly connected to the inner side wall of one end of the butt tube (10); the metal-reinforced flexible graphite stuffing (11) and the stuffing threaded pressing sleeve (16) are sleeved on the outer wall of one end of the piston rod (13).

4. A device for clearing blocked pressure ports of chemical equipment under pressure according to claim 1, characterized in that: The outer wall of one end of the stainless steel hydraulic oil cylinder (6) close to the flange (9) is fixedly connected to the hydraulic oil interface 1 (5), and the side wall of one end of the stainless steel hydraulic oil cylinder (6) away from the flange (9) is fixedly connected to the hydraulic oil interface 2 (7). High-sensitivity Hall magnetic sensing switches (8) are fixedly connected at both ends of the outer wall of the stainless steel hydraulic oil cylinder (6) opposite to the hydraulic oil interface 1 (5).

5. The device for clearing blocked pressure ports of chemical equipment under pressure according to claim 1 is characterized by: The piston rod (13) is located at one end of the outer wall of the stainless steel hydraulic cylinder (6) and is fixedly connected to the piston body (22); one end of the piston rod (13) passes through the piston body (22) and is threadedly connected to the piston clamping and fixing nut (21).

6. The device for clearing blocked pressure ports of chemical equipment under pressure according to claim 1, characterized in that: A plurality of polyurethane hydraulic oil sealing rings (20) are fixedly connected to the outer wall of the piston body (22), and a strong magnetic piston position signaling ring (23) is provided between two adjacent polyurethane hydraulic oil sealing rings (20) on the piston body (22).

7. The device for clearing blocked pressure ports of chemical equipment under pressure according to claim 1, characterized in that: The interior of one end of the piston rod (13) away from the piston body (22) is connected to the front and rear arc-shaped steel pads (17), and the front and rear arc-shaped steel pads (17) are movably connected to the universal ball stud (18), and the universal ball stud (18) is threadedly connected to the ball stud threaded nut (19), and the ball stud threaded nut (19) is connected to one end of the piston rod (13).

8. The device for clearing blocked pressure ports of chemical equipment under pressure according to claim 1, characterized in that: One end of the universal ball stud (18) away from the front and rear arc-shaped steel pads (17) is threadedly fixedly connected to the cleaning head mounting base plate (15), and the other end side wall of the cleaning head mounting base plate (15) is fixedly connected to the wire cleaning head (14).

Images