Automatic GGH thermal element online flushing device

Abstract

The utility model relates to an automatic GGH (gas-gas heater) thermal element online flushing device, which belongs to the technical field of GGH thermal element cleaning, is arranged on one side of a GGH, and comprises a water storage tank, a high-pressure water pump, a track platform, a moving trolley, a driving mechanism and a nozzle mechanism, the track platform is fixedly arranged on one side of a rotor shell, and the moving trolley is arranged on the track platform. The moving trolley is connected with the driving mechanism, the water storage pond is connected with the high-pressure water pump through a first connecting pipe, the high-pressure water pump is connected with the nozzle mechanism through a second connecting pipe, the nozzle mechanism extends into a flue of the GGH, and the second connecting pipe is fixed to the moving trolley. The driving mechanism drives the moving trolley to move on the track platform to drive the nozzle mechanism on the second connecting pipe to move in the GGH flue to achieve all-directional flushing. The device is simple in structure and convenient to use, the GGH thermal element can be washed clean online, it is effectively guaranteed that when the GGH thermal element treats flue gas, the flue gas flow is not subjected to resistance, the frequency of an induced draft fan is not increased, and power consumption is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of flushing devices, specifically to a kind of automatic GGH hot element online flushing device, belong to GGH hot element cleaning technical field. BACKGROUND

[0002] GGH is to heat the clean flue gas after desulfurization by using original flue gas, so that the exhaust gas temperature reaches above dew point, reduces the corrosion to flue and chimney, improves the diffusion degree of pollutant;At the same time, reduce the flue gas temperature into absorption tower, reduce the process technology requirement of anticorrosion in tower.

[0003] Since GGH heat exchanger in processing flue gas, flue gas is treated by desulfurization bag filter after entering desulfurization GGH heat exchanger preheating and hot blast stove heating, mixed with ammonia gas into denitration catalyst reaction to remove NOX, after purification flue gas is recycled by heat exchanger absorption waste heat and discharged into chimney by induced draft fan, the heat exchange element of GGH heat exchanger is made of special waveform carbon steel plate, according to the shape and size of each small compartment in module compartment, various specifications of assembly are made.Each assembly is made of a positioning plate with vertical large corrugation and disturbance inclined wave, and another corrugated plate with the same inclined wave is alternately stacked and bundled.Cold section uses Corden steel element, also according to the shape of compartment, various specifications of assembly are made, and each assembly is made of a positioning plate with vertical large corrugation and another corrugated plate alternately stacked and bundled.If the lower edge of cold section heat storage element is corroded and impurities enter GGH heat exchange element, which leads to poor ventilation of heat exchange element, flue gas flow is resisted, induced draft fan frequency is increased, power consumption is increased or production is forced to stop, so the flushing of GGH heat exchange element is very important, the current flushing mode whether online manual flushing or offline chemical liquid soaking flushing all has the problems of expensive, large investment of human resources, high labor intensity, low work efficiency etc.

[0004] Patent CN213902074U describes an online automatic flushing device for solving the clogging of denitrification GGH heat exchangers. It involves installing a high-pressure water pump outside the GGH heat exchanger, connected to a main flushing water pipeline. This main pipeline connects to multiple flushing water branches, each with a duckbill-shaped flushing nozzle to thoroughly flush the GGH heat exchanger without requiring manual intervention. However, the flushing water branches are fixed, resulting in incomplete flushing and low automation. Patent CN208805098U describes a rotary type... The heat exchanger flushing device and rotary heat exchanger can be freely slidable and adjusted within the rotary heat exchanger flue via guide rails and flushing units, allowing for easy adjustment of the spray unit's position and achieving comprehensive flushing of the heat exchange elements within the rotary heat exchanger rotor. However, its structure is complex, bulky, and heavy, making installation and use inconvenient. The guide rails require upper and lower first and second guide parts, one for sliding connection with the lifting lug frame and the other for sliding connection with the connecting frame, to enable movement. Furthermore, the guide rails extend into the flue, making them susceptible to corrosion and damage.

[0005] Therefore, developing a device for online flushing of GGH thermal elements to overcome the above-mentioned defects has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an automated online flushing device for GGH heating elements. It has a simple structure, is easy to use, and can clean the GGH heating elements online. It can effectively ensure that the flue gas flow is not obstructed when the GGH heating elements process flue gas, and the frequency of the induced draft fan will not increase, thus effectively reducing power consumption.

[0007] To address the aforementioned technical problems, this utility model provides an automated online flushing device for the heating element of a gas turbine generator (GGH). The device is installed on one side of the GGH and includes a water storage tank, a high-pressure water pump, a track platform, a moving trolley, a drive mechanism, and a nozzle mechanism. A track platform is fixedly installed on one side of the rotor housing of the GGH. The track platform is horizontally arranged radially along the heating element of the GGH. A moving trolley is mounted on the track platform and connected to the drive mechanism. The water storage tank is connected to the inlet end of the high-pressure water pump via a first connecting pipe. The outlet end of the high-pressure water pump is connected to the nozzle mechanism via a second connecting pipe. The nozzle mechanism extends into the flue of the GGH. The second connecting pipe is fixed to the moving trolley. The drive mechanism drives the moving trolley to move on the track platform, causing the nozzle mechanism on the second connecting pipe to move within the GGH flue to achieve all-around flushing.

[0008] The further defined technical solution of this utility model is:

[0009] Furthermore, in the aforementioned automated GGH heat element online flushing device, the track platform includes a track platform base plate and a guard plate. The track platform base plate is recessed downward to form two parallel grooves as guide rails. A limiting block is provided in the groove at one end away from the rotor housing in the GGH. The two sides of the track platform base plate extend upward to form guard plates.

[0010] In terms of technical advantages, this utility model does not have a guide rail frame above the GGH, but instead has a guide rail platform on one side of the GGH rotor housing. The guide rail platform does not extend into the flue, which avoids damage to the guide rail platform and also simplifies the structure, requiring only one platform. The platform has a grooved guide rail to facilitate the movement of the trolley along the route and prevents the high-pressure steel pipe on the nozzle mechanism from hitting the GGH rotor housing and causing damage. In addition, the groove of the bottom plate of the guide rail plate has a limiting block to prevent the trolley from slipping off the guide rail platform and affecting the normal operation. The bottom plate of the guide rail platform has guard plates on both sides to further prevent the trolley from leaving the guide rail platform and ensure the normal and stable operation.

[0011] The track platform enables the nozzle mechanism to extend and retract. Guide rails, a moving trolley, and a drive mechanism are installed on the platform. An electric motor drives the moving trolley to extend and retract, move forward and backward. The trolley is connected to the back of the trolley by a flexible hose, which allows the trolley to move forward and backward without obstruction.

[0012] In the aforementioned automated online flushing device for GGH thermal elements, the nozzle mechanism is a stainless steel rotary nozzle.

[0013] In terms of technical benefits, this utility model uses a stainless steel rotary nozzle, which extends the service life. Moreover, the rotary nozzle can evenly and comprehensively rinse during the forward and backward movement of the trolley, increasing rinsing efficiency.

[0014] In the aforementioned automated online flushing device for GGH heating elements, two rows of stainless steel rotary nozzles are provided, with at least three stainless steel rotary nozzles in each row. The orifice diameter of the stainless steel rotary nozzles is 1.5 mm.

[0015] In terms of technical effect, this utility model adopts multiple rows of stainless steel rotary nozzles, which can effectively improve rinsing efficiency and save time.

[0016] In the aforementioned automated online flushing device for GGH heat elements, the drive mechanism includes a sensor, a motor, cables, and a control box. The mobile trolley is equipped with a motor, and sensors are located at the front and rear ends of the mobile trolley. The sensors are connected to the control box via cables, and the control box controls the motor to start rotating in both directions, thereby driving the mobile trolley forward and backward.

[0017] In terms of technical effects, this utility model adopts a drive mechanism and a through-hole control box, which effectively improves automation, reduces labor intensity, and saves costs.

[0018] In the aforementioned automated online flushing device for GGH heating elements, the first connecting pipe is a high-pressure steel pipe.

[0019] In terms of technical benefits, the water storage tank of this utility model is fixed between itself and the high-pressure water pump, and high-pressure steel pipes can be used. Moreover, high-pressure steel pipes have a longer service life, larger size, improve water supply efficiency, and allow for more thorough rinsing.

[0020] In the aforementioned automated GGH heat element online flushing device, the second connecting pipe includes a high-pressure steel pipe and a high-pressure hose. The two ends of the high-pressure hose are respectively provided with high-pressure steel pipes. One high-pressure steel pipe is connected to the outlet end of the high-pressure water pump, and the other high-pressure steel pipe is connected to the nozzle mechanism. The high-pressure steel pipe connected to the nozzle mechanism is fixedly connected to the moving trolley.

[0021] Technical advantages: The second connecting pipe of this utility model consists of a high-pressure steel pipe and a high-pressure hose. The high-pressure steel pipe is provided at the outlet end of the high-pressure water pump and on the nozzle mechanism, which facilitates fixed connection, has high strength, extends service life, facilitates the high-pressure water pump to pump water, and also facilitates the radial movement of the nozzle mechanism to achieve all-round flushing. The nozzle mechanism needs to move, and if it were all high-pressure steel pipes, it would not be conducive to completing the movement. The movement is completed through the transition of the hose.

[0022] In the aforementioned automated online flushing device for GGH thermal elements, the rotor housing of the GGH is provided with a through hole for the nozzle mechanism to extend into the GGH flue.

[0023] The beneficial effects of this utility model are:

[0024] In the prior art, the flushing device is set directly above the heating element. With this setting, the nozzle faces the direction of the flue gas, which easily leads to nozzle clogging and affects flushing. This invention enters through the rotor housing and uses a rotating nozzle, which effectively solves the clogging problem.

[0025] The flushing device of this utility model is designed to be compatible with the current operating conditions of the GGH heat exchanger. The online flushing device will not cause operational failures of the GGH heat exchanger. The online flushing of the GGH heat exchanger during shutdown maintenance eliminates the need for manual flushing every time the machine is shut down. The heat exchange elements can be flushed online during the operation of the GGH, and the heat exchange elements can be flushed evenly and smoothly multiple times.

[0026] This invention avoids damage by placing the track platform outside the GGH rotor housing, and uses a moving trolley to achieve radial movement of the nozzle mechanism for rinsing the hot elements, resulting in more thorough rinsing. It has a simple structure, a high degree of automation, and is easy to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the automated online flushing device for GGH heating elements of this utility model;

[0028] Figure 2 for Figure 1 Cross-sectional view of the central orbit platform;

[0029] In the diagram: 1-Water storage tank, 2-High-pressure water pump, 3-Rail platform, 31-Rail platform base plate, 32-Guard plate, 33-Groove, 4-Mobile trolley, 5-Nozzle mechanism, 6-Rotor housing, 7-GGH heating element, 8-High-pressure steel pipe, 9-High-pressure hose. Detailed Implementation Example 1

[0030] This embodiment provides an automated online flushing device for GGH heating elements, the structure of which is as follows: Figure 1 As shown, the structure, located on one side of the GGH, includes a water storage tank 1, a multi-stage high-pressure centrifugal pump, a track platform 3, a moving trolley 4, a drive mechanism, and a nozzle mechanism 5. The track platform 3 is fixedly mounted on one side of the rotor housing 6 of the GGH. The track platform 3 is horizontally arranged radially along the heating element 7 of the GGH. The moving trolley 4 is mounted on the track platform 3 and connected to the drive mechanism. The water storage tank 1 is connected to the inlet end of the multi-stage high-pressure centrifugal pump via a DN100 high-pressure steel pipe 8. The outlet end of the multi-stage high-pressure centrifugal pump is connected to a DN80 high-pressure steel pipe 8. The steel pipe 8 is connected to the DN80 high-pressure hose 9. The other end of the DN80 high-pressure hose 9 is connected to the nozzle mechanism through the DN80 high-pressure steel pipe 8. The high-pressure steel pipe 8 with the nozzle mechanism 5 is fixedly connected to the mobile trolley 4. The rotor housing 6 in the GGH is provided with a through hole for the nozzle mechanism 5 to extend into the GGH flue. The nozzle mechanism 5 extends into the GGH flue. The second connecting pipe is fixed on the mobile trolley 4. The drive mechanism drives the mobile trolley 4 to move on the track platform 3, which in turn drives the nozzle mechanism 5 on the second connecting pipe to move in the GGH flue to achieve all-round flushing.

[0031] The nozzle mechanism 5 is specifically a 50 kg stainless steel rotary nozzle. The stainless steel rotary nozzle is arranged in two rows, with three 50 kg stainless steel rotary nozzles in each row. The orifice diameter of the 50 kg stainless steel rotary nozzle is 1.5 mm.

[0032] See Figure 2 The track platform 3 includes a track platform base plate 31 and a guard plate 32. The track platform base plate 31 is recessed downward to form two parallel grooves 33 as guide rails. A limiting block is provided in the groove 33 at one end away from the rotor housing 6 in GGH. The two sides of the track platform base plate 31 extend upward to form guard plates 32.

[0033] The drive mechanism includes sensors, a motor, cables, and a control box. The mobile trolley 4 houses the motor, and sensors are located at its front and rear ends. These sensors are connected to the control box via cables. The control box controls the motor to rotate in both directions, thus propelling the mobile trolley 4 forward and backward. In a specific implementation of this utility model:

[0034] (1) Based on the current status of the GGH heat exchanger flue, make an opening at the top and insert the nozzle mechanism;

[0035] (2) Weld and install the track platform, and set up a moving trolley on the track platform;

[0036] (3) Install the nozzle mechanism, which is mounted on the mobile trolley via a high-pressure steel pipe;

[0037] (4) Install a multi-stage high-pressure centrifugal pump, weld a DN80 high-pressure steel pipe, install a DN high-pressure hose, and connect the water storage tank to the multi-stage high-pressure centrifugal pump and nozzle mechanism;

[0038] (5) Install sensors on the mobile trolley, lay cables, install one control box, and connect and debug the system for control.

[0039] Based on the operating conditions of the GGH heat exchanger, this utility model adds a flushing device to one side of the GGH heat exchanger. The on-site installed control box can automatically clean the GGH heat exchanger plates during quarterly shutdown maintenance, achieving the automatic flushing effect of the GGH heat exchanger. The flue gas flow is not obstructed, the induced draft fan frequency will not increase, reducing power consumption or the risk of forced production shutdown.

[0040] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. An automatic GGH heat element online flushing device arranged on one side of a GGH, characterized in that: The utility model relates to a kind of GGH all-directional washing device, including water storage pool (1), high-pressure water pump (2), track platform (3), mobile trolley (4), drive mechanism and nozzle mechanism (5), the track platform (3) is fixed with the one side of the rotor shell (6) of GGH, the track platform (3) is horizontally arranged along the radial direction of GGH thermal element (7), the mobile trolley (4) is equipped on the track platform (3), the mobile trolley (4) is connected with the drive mechanism, the water storage pool (1) is connected with the import end of the high-pressure water pump (2) by first connecting pipe, the outlet of the high-pressure water pump (2) is connected with the nozzle mechanism (5) by second connecting pipe, the nozzle mechanism (5) extends into the flue of GGH, the second connecting pipe is fixed on the mobile trolley (4), the drive mechanism drives mobile trolley (4) to move on the track platform (3) and drives the nozzle mechanism (5) on second connecting pipe to move in the flue of GGH, and realizes all-round washing.

2. The automated GGH heat element online flushing device according to claim 1, characterized in that: The track platform (3) includes track platform bottom plate (31) and guard plate (32), the track platform bottom plate (31) is formed with two parallel grooves (33) as guide rail by concave downward, the groove (33) is equipped with limit block in the end away from the rotor shell (6) in GGH, the both sides of the track platform bottom plate (31) are extended to form the guard plate (32) upward respectively.

3. The automated GGH heat element online flushing device according to claim 1, characterized in that: The nozzle mechanism (5) is stainless steel rotary nozzle.

4. The automated GGH heat element online flushing device according to claim 3, characterized in that: The stainless steel rotary nozzle is provided with 2 rows, and each row is provided with at least 3 stainless steel rotary nozzles, and the aperture of the stainless steel rotary nozzle is 1.5 mm.

5. The automated GGH heat element online flushing device according to claim 1, characterized in that: The drive mechanism includes inductor, motor, cable and control box, the mobile trolley (4) is equipped with motor, the front end and the rear end of the mobile trolley (4) are equipped with inductor respectively, the inductor is connected with the control box by cable, and the control box controls the motor to start positive and reverse rotation to drive the forward movement and backward movement of the mobile trolley (4) by inductor.

6. The automated GGH heat element online flushing device according to claim 1, characterized in that: The first connecting pipe is high-pressure steel pipe (8).

7. The automated GGH heat element online flushing device according to claim 1, characterized in that: The second connecting pipe includes high-pressure steel pipe (8) and high-pressure hose (9), the both ends of the high-pressure hose (9) are equipped with the high-pressure steel pipe (8) respectively, one high-pressure steel pipe (8) is connected with the outlet of the high-pressure water pump (2), the other high-pressure steel pipe (8) is connected with the nozzle mechanism (5), and the high-pressure steel pipe (8) connected with the nozzle mechanism (5) is fixedly connected with the mobile trolley (4).

8. The automated GGH heat element online flushing device according to claim 1, characterized in that: The rotor shell (6) of GGH is equipped with through hole for nozzle mechanism (5) to extend into the flue of GGH.

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