A de-nitrating metering module unblocking device

Abstract

The utility model relates to denitration equipment maintenance technical field discloses a kind of denitration metering module dredging device, including cabinet, air inlet pipe, reaction cylinder, flow guide pipe and outflow pipe;Its core is, reaction cylinder is provided with dredging subassembly, dredging subassembly includes detachable seal in the top end of reaction cylinder's cylinder cover, along axial sliding and being arranged in the cylinder cover dredging drive rod, and the dredging plug of being fixed in the lower end of dredging drive rod, the outer periphery of dredging plug and the inner wall of reaction cylinder sliding fit.The device is also provided with pressure gauge for monitoring the pressure inside reaction cylinder and flowmeter for monitoring outlet flow rate.The utility model is combined by mechanical reciprocating dredging and high-pressure liquid flushing, and the process is monitored in real time, solves the problem that only relying on liquid flushing in prior art is difficult to remove stubborn crystallization, dredging is not thorough and process is uncontrollable, has the beneficial effect of high dredging efficiency, good cleanliness, operation safety controllable.

Description

Technical Field

[0001] This utility model relates to the field of denitrification equipment maintenance technology, and in particular to a denitrification metering module unblocking device. Background Technology

[0002] In flue gas denitrification treatment in thermal power generation, industrial boilers, and other fields, selective catalytic reduction (SCR) technology is the mainstream process. This technology typically requires the precise injection of urea product gas or ammonia gas as a reducing agent into the flue gas, and the denitrification metering module is the key equipment responsible for the precise control and delivery of the reducing agent. However, during long-term operation, due to temperature changes, improper adjustment, or impurity accumulation, substances such as urea product gas are prone to crystallization and solidification inside the pipelines, valves, or nozzles of the metering module, forming hard blockages.

[0003] To ensure the normal operation of the denitrification system, it is necessary to regularly unclog and maintain the metering modules. Currently, the common method of unclogging is to use external high-pressure water or chemical cleaning fluid to circulate and flush the pipeline. This method is effective for loose deposits. However, when the inner wall of the pipeline is covered with firmly attached, hard crystals, the kinetic energy of the liquid alone is often insufficient to effectively break them up and remove them. The liquid flow forms "channels" along the gaps in the blockage, and most of the energy is consumed without being applied to the blockage itself. This results in long unclogging times, poor results, and even failure to completely remove the blockage, leading to recurring problems. Therefore, this invention proposes a denitrification metering module unclogging device to address the shortcomings of existing technologies. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a denitrification metering module unblocking device, which aims to improve the problem that some existing denitrification metering module unblocking devices have a single unblocking method, relying solely on liquid flushing to remove stubborn crystals, resulting in incomplete unblocking and low efficiency.

[0005] This utility model provides a denitrification metering module unblocking device, including: a cabinet, an air inlet mechanism, an unblocking component, a guide pipe, and an outlet pipe.

[0006] The unblocking assembly is located inside the cabinet. The reaction cylinder of the unblocking assembly is connected to the end of the air inlet pipe of the air inlet mechanism, the bottom of the reaction cylinder is connected to the beginning of the guide pipe, and the guide pipe is connected to the outlet pipe, together forming a liquid passage. The unblocking assembly also includes a cylinder cover that is detachably and sealingly connected to the top of the reaction cylinder, an unblocking drive rod that slides axially through and is sealed to the cylinder cover, and an unblocking plug that is fixedly connected to the lower end of the unblocking drive rod. The outer periphery of the unblocking plug forms a sliding fit with the inner wall of the reaction cylinder.

[0007] Preferably, the cabinet body is rotatably connected to a cabinet door for opening and closing the internal space of the cabinet body.

[0008] Preferably, the air intake mechanism further includes an air intake valve connected in series on the air intake pipe.

[0009] Preferably, the unblocking component further includes a diversion pipe disposed between the air inlet pipe and the cylinder cover, and an unblocking valve is connected in series on the diversion pipe.

[0010] Preferably, the cylinder cover is connected to a pressure gauge for monitoring the internal pressure of the reaction cylinder.

[0011] Preferably, a flow meter for monitoring the liquid outflow velocity is connected in series on the outflow pipe.

[0012] Preferably, a connecting valve and a control valve are connected in series along the flow direction on the outlet pipe.

[0013] Preferably, the device further includes a docking mechanism fixedly connected to the end of the outlet pipe. The docking mechanism includes an extension pipe, and fixing buckles a and b are respectively provided on both sides of the outer peripheral wall of the extension pipe.

[0014] Preferably, the docking mechanism further includes a limiting component, which includes a limiting sleeve fixed to the outside of the extension tube and a movable rod that is rotatably and slidably inserted inside the limiting sleeve.

[0015] Preferably, the limiting assembly further includes a limiting block fixed to the side wall of the limiting sleeve, a fixing block slidably connected to the moving rod, and a support spring sleeved on the moving rod, wherein the two ends of the support spring elastically abut against the inner end walls of the fixing block and the limiting sleeve, respectively.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting up a reaction cylinder with a built-in reciprocating unblocking drive rod and unblocking plug, realizes the coordinated operation of mechanical physical unblocking and high-pressure liquid flushing. It solves the problem that the existing technology relies solely on liquid flushing, which has poor cleaning effect on stubborn crystals or deposits and incomplete unblocking. It achieves the technical effect of efficiently breaking and peeling off blockages, greatly improving unblocking efficiency and cleanliness.

[0018] 2. This utility model, through the systematic design of connecting a pressure gauge to the cylinder cover, a flow meter in series on the outlet pipe, and cooperating with an air inlet valve, a dredging valve, and a control valve, solves the problem that existing technologies cannot monitor the internal status in real time during the dredging process, resulting in blind operation, low efficiency, and safety hazards. It achieves the technical effect of digitizing and visualizing the dredging process, making the operation more precise and controllable, and significantly improving the safety and success rate of the operation.

[0019] 3. This utility model integrates all functional components into a single cabinet and designs a docking mechanism that includes an extension tube, a fixing buckle, and a precision limiting component. This solves the problems of existing dredging operations requiring the carrying of scattered tools, cumbersome on-site assembly and connection, and poor connection reliability and sealing. It achieves the technical effect of strong overall device integrity, convenient mobility, and the ability to quickly, accurately, and firmly dock with the module to be dredged, thereby improving the convenience and professionalism of on-site operations. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a denitrification metering module unblocking device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the reaction cylinder of a denitrification metering module unblocking device proposed in this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the flow meter structure of a denitrification metering module unblocking device proposed in this utility model.

[0024] Legend:

[0025] 1. Cabinet body; 2. Cabinet door; 3. Air intake mechanism; 31. Air intake pipe; 32. Air intake valve; 33. Unblocking assembly; 331. Diverter pipe; 332. Unblocking valve; 333. Cylinder cover; 334. Reaction cylinder; 335. Unblocking drive rod; 336. Unblocking plug; 337. Pressure gauge; 34. Guide pipe; 35. Outlet pipe; 36. Connecting valve; 37. Control valve; 38. Flow meter; 4. Docking mechanism; 41. Extension pipe; 42. Fixing buckle a; 43. Fixing buckle b; 44. Limiting assembly; 441. Limiting block; 442. Limiting sleeve; 443. Moving rod; 444. Fixing block; 45. Support spring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Reference Figures 1 to 4This utility model provides a denitrification metering module unblocking device, which aims to solve the technical problems of existing unblocking devices having a single structure, being unable to perform fluid flushing and mechanical unblocking at the same time, and lacking process monitoring, resulting in uncontrollable unblocking effect.

[0029] like Figure 1 and Figure 2 As shown, the device includes a cabinet 1, and an air intake mechanism 3, a dredging component 33, a guide pipe 34, and an outlet pipe 35 disposed inside the cabinet 1. The cabinet 1 serves as the installation platform for the entire device and accommodates the various functional components. The air intake mechanism 3, the dredging component 33, the guide pipe 34, and the outlet pipe 35 together form a circulation path for dredging liquid. Specifically, the air intake pipe 31 of the air intake mechanism 3 passes through the cabinet 1. The end of the air intake pipe 31 is connected to the reaction cylinder 334 of the dredging component 33. The bottom of the reaction cylinder 334 is connected to the beginning of the guide pipe 34. The end of the guide pipe 34 is connected to the outlet pipe 35. The outlet pipe 35 passes through the cabinet 1, thereby forming a complete liquid flow path.

[0030] The core unblocking component 33 is located inside the cabinet 1. The unblocking component 33 specifically includes a reaction cylinder 334 as the main body; a cylinder cover 333, which is detachably and sealingly connected to the top of the reaction cylinder 334; an unblocking drive rod 335, which slides axially through and is sealed to the cylinder cover 333, with the lower end of the unblocking drive rod 335 extending into the internal space of the reaction cylinder 334; and an unblocking plug 336, which is fixedly connected to the lower end of the unblocking drive rod 335 located inside the reaction cylinder 334. The outer periphery of the unblocking plug 336 forms a sliding fit with the inner wall of the reaction cylinder 334. By driving the unblocking drive rod 335 to move up and down reciprocally from the outside, the unblocking plug 336 can be directly driven to physically break up and push the blockages in the pipeline and cylinder wall inside the reaction cylinder 334.

[0031] Reference Figure 1 , Figure 2 and Figure 4 To facilitate the operation and maintenance of the components inside the cabinet 1, a cabinet door 2 is rotatably connected to the cabinet 1. The cabinet door 2 is used to open and close the internal space of the cabinet 1. In the liquid flow path, in order to achieve the regulation of flow rate and pressure, the air intake mechanism 3 also includes an air intake valve 32 connected in series on the air intake pipe 31, which is used to control the total inflow of the unblocking liquid. The unblocking component 33 also includes a diversion pipe 331 set between the air intake pipe 31 and the cylinder cover 333. An unblocking valve 332 is connected in series on the diversion pipe 331, which is used to regulate the flow rate of the liquid entering the reaction cylinder 334. At the outlet end of the device, a connecting valve 36 and a control valve 37 are connected in series along its flow direction on the outlet pipe 35. The two work together to regulate the discharge state of the unblocked liquid.

[0032] A pressure gauge 337 is connected to the cylinder cover 333. The pressure gauge 337 is used to monitor the real-time changes in the internal pressure of the reaction cylinder 334. A flow meter 38 is connected in series on the outlet pipe 35. The flow meter 38 is used to monitor the liquid outflow rate. Based on the feedback from the pressure gauge 337 and the flow meter 38, the operator adjusts the opening of the air inlet valve 32, the unblocking valve 332, and the control valve 37.

[0033] Reference Figure 1 and Figure 3 The device also includes a docking mechanism 4, which is fixedly connected to the end of the outlet pipe 35. The docking mechanism 4 includes a hollow extension pipe 41, and the outer peripheral walls of the extension pipe 41 are respectively provided with a fixing buckle a42 and a fixing buckle b43 for locking connection.

[0034] Please refer to Figure 3 The limiting component 44 specifically includes a limiting sleeve 442 fixed to the outside of the extension tube 41, and a movable rod 443 rotatably and slidably inserted inside the limiting sleeve 442. In order to precisely control the movement of the movable rod 443, a limiting block 441 is also fixed on the side wall of the limiting sleeve 442. The limiting block 441 is used to limit the axial and circumferential movement range of the movable rod 443. The limiting component 44 also includes a fixing block 444 slidably connected to the movable rod 443, and a support spring 45 sleeved on the movable rod 443. The two ends of the support spring 45 elastically abut against the inner end walls of the fixing block 444 and the limiting sleeve 442, respectively.

[0035] The implementation principle of this application embodiment is as follows: Before the dredging operation, the device is first connected to the pipeline of the external module to be dredged through the docking mechanism 4. During operation, the moving rod 443 rotates and slides in the limiting sleeve 442. Under the restriction of the limiting block 441, the fixed block 444 moves and compresses or releases the support spring 45. Finally, the fixing buckles a42 and b43 on both sides of the extension tube 41 are used to achieve a firm and sealed docking.

[0036] After connection, open cabinet door 2 and open air intake valve 32 of air intake mechanism 3. The unblocking liquid flows through air intake pipe 31, through diversion pipe 331 and unblocking valve 332, and enters the reaction cylinder 334 of unblocking component 33. At this time, the operator drives unblocking drive rod 335, so that the fixedly connected unblocking plug 336 performs up and down physical unblocking movement in reaction cylinder 334. At the same time, according to the internal pressure displayed by pressure gauge 337 and the outlet flow displayed by flow meter 38, the unblocking valve 332, connecting valve 36 and control valve 37 are adjusted. The fluid flushing and mechanical movement work together to act on the blockage. The treated liquid is discharged from the device through guide pipe 34 and outlet pipe 35. Through this unblocking method that combines fluid and mechanical processes with real-time monitoring and feedback, the problems of incomplete unblocking and low efficiency of existing technologies are solved.

Claims

1. A de-nitrating metering module purging device, comprising: Cabinet (1); An air intake mechanism (3) is provided, which includes an air intake pipe (31) passing through the cabinet (1), a drainage component (33), a guide pipe (34), and an outlet pipe (35). The outlet pipe (35) passes through the cabinet (1) and is connected to the end of the guide pipe (34). The unblocking component (33) is characterized in that it is disposed inside the cabinet (1), the unblocking component (33) includes a reaction cylinder (334) connected to the end of the air inlet pipe (31), the beginning of the guide pipe (34) is connected to the bottom of the reaction cylinder (334), the unblocking component (33) further includes: a cylinder cover (333) detachably and sealed to the top of the reaction cylinder (334), an unblocking drive rod (335) which slides axially through and is sealed to the cylinder cover (333), the lower end of the unblocking drive rod (335) extends into the interior of the reaction cylinder (334), and an unblocking plug (336) fixedly connected to the lower end of the unblocking drive rod (335), the outer periphery of the unblocking plug (336) forming a sliding fit with the inner wall of the reaction cylinder (334).

2. A pitot module unblocker according to claim 1, wherein, The cabinet (1) is rotatably connected to a cabinet door (2) for opening and closing the interior space of the cabinet (1).

3. A pitot module unblocker according to claim 1, wherein, The air intake mechanism (3) also includes an air intake valve (32) connected in series on the air intake pipe (31).

4. The device according to claim 1, wherein The unblocking assembly (33) also includes a diversion pipe (331) disposed between the air inlet pipe (31) and the cylinder cover (333), and an unblocking valve (332) is connected in series on the diversion pipe (331).

5. The device of claim 1, wherein, The cap (333) is connected to a pressure gauge (337) for monitoring the internal pressure of the reaction vessel (334).

6. A pitot module unblocker according to claim 1, wherein, A flow meter (38) for monitoring the outflow velocity of liquid is connected in series on the outflow pipe (35).

7. A pitot module unblocker according to claim 1, wherein, The outlet pipe (35) is also connected in series with a connecting valve (36) and a control valve (37) along its flow direction.

8. The device of claim 1, wherein, The device also includes a docking mechanism (4), which is fixedly connected to the end of the outlet pipe (35). The docking mechanism (4) includes an extension pipe (41), and fixing buckles a (42) and b (43) are respectively provided on both sides of the outer peripheral wall of the extension pipe (41).

9. A pitot module unblocker according to claim 8, wherein, The docking mechanism (4) further includes a limiting component (44), which includes a limiting sleeve (442) fixed to the outside of the extension tube (41) and a movable rod (443) rotatably and slidably inserted inside the limiting sleeve (442).

10. A pitot module unblocker according to claim 9, wherein, The limiting assembly (44) further includes: a limiting block (441) fixed to the side wall of the limiting sleeve (442) for limiting the axial and circumferential movement range of the moving rod (443); a fixing block (444) slidably connected to the moving rod (443); and a support spring (45) sleeved on the moving rod (443), wherein the two ends of the support spring (45) elastically abut against the inner end walls of the fixing block (444) and the limiting sleeve (442), respectively.

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