Low-temperature economizer leakage overhauling device

Abstract

The utility model relates to the technical field of heat exchanger maintenance, in particular to a low-temperature economizer leakage overhauling device which comprises an installation head, a plurality of fastening plates are arranged on one side of the installation head, the side, provided with the fastening plates, of the installation head abuts against a port of a heat exchange tube, and extrusion knobs are arranged on the outer surfaces of the fastening plates in a sleeved mode. And a plurality of fan-shaped baffles are evenly arranged in the side, away from the fastening plate, of the mounting head, water permeable holes are formed among the multiple fan-shaped baffles, a plurality of blocking plates are mounted at the circle centers of the multiple fan-shaped baffles through rotating shafts, and the blocking plates can block the water permeable holes. The multiple fastening plates can be pressed at the same time by extruding the rotary knobs, so that the multiple fastening plates abut against the heat exchange pipe, the surfaces, abutting against the heat exchange pipe, of the fastening plates are provided with anti-skid lines, and therefore the situation that when the mounting head is closed, the device is burst out of a port of the heat exchange pipe by water pressure in the heat exchange pipe can be avoided, and the stability of the device is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger maintenance technical field, concretely is a low temperature coal economizer leakage overhauling device. BACKGROUND

[0002] Low temperature coal economizer is an important equipment for recovering boiler tail flue gas waste heat, and the boiler thermal efficiency is improved by reducing the exhaust gas temperature. However, in the actual operation process, the heat exchange tube of low temperature coal economizer is easy to leak due to the influence of factors such as long-term flue gas scouring, corrosion and thermal stress. Heat exchange tube leakage not only leads to heat loss, but also causes system operation efficiency to decline, equipment corrosion to intensify and safety hazards and other problems.

[0003] The existing part of the plugging device is only suitable for specific working conditions, such as no water flow or low pressure environment, which cannot meet the needs of plugging under the running state of low temperature coal economizer, and some plugging devices have complex structure and need professional operation, and the plugging process takes a long time. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem that the prior art lacks, provides a low temperature coal economizer leakage overhauling device, can press multiple fastening plates simultaneously through extrusion knob, makes multiple fastening plates and heat exchange tube abut, and the surface of fastening plate and heat exchange tube abut has anti-skid line, so that the water pressure in the heat exchange tube can be prevented from bursting out from the port of the heat exchange tube when the mounting head is closed, the influence of the pressure of the liquid on the cooperation of the extrusion knob and the fastening plate can be avoided through the water permeable hole, and the water permeable hole can be effectively plugged by the plugging plate.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A low temperature coal economizer leakage overhauling device, including the mounting head, the side of mounting head has multiple fastening plates, the side of mounting head with fastening plate has heat exchange tube port abut, multiple fastening plate's outer surface is equipped with extrusion knob, the inside of the side of mounting head away from fastening plate is evenly provided with multiple sector baffles, multiple sector baffles between have water permeable hole, the center of multiple sector baffles is installed with multiple plugging plates through pivot, the plugging plate can plug the water permeable hole.

[0007] Preferably, the outer surface of the plurality of fastening plates has external threads, and the inner surface of the extrusion knob has internal threads adapted to the external threads.

[0008] Preferably, the thickness of the fastening plate gradually increases from one end close to the mounting head to the other end, and the side of the fastening plate close to the heat exchange tube has anti-skid lines.

[0009] Preferably, the size of the blocking plate is larger than the size of the water permeable hole, the rotating shaft is arranged through the baffle, and the end, away from the blocking plate, of the rotating shaft is provided with a mounting hole, and the mounting hole is provided with a handle.

[0010] Preferably, the surface of the blocking plate and the surface of the baffle are both provided with a sealing layer, and the blocking plate abuts against the baffle.

[0011] Preferably, the end, close to the heat exchange pipe, of the mounting head is provided with an O-shaped sealing ring.

[0012] Preferably, the outer surface of the extrusion knob and the mounting head is provided with a prismatic structure, and the extrusion knob and the mounting head are both made of metal.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The utility model discloses a simple structure, a plurality of fastening plates of the device are sleeved at the port of the heat exchange pipe, then the mounting head is pushed, the side, provided with the fastening plate, of the mounting head abuts against the port of the heat exchange pipe, then the extrusion knob is screwed, the inner surface of the extrusion knob is provided with an internal thread, and the outer surface of the fastening plate is provided with an external thread matched with the internal thread, so that the extrusion knob can move along the fastening plate to the end, away from the mounting head, of the fastening plate, the thickness of the fastening plate gradually increases from the end, close to the mounting head, to the other end, so that the extrusion knob can press the plurality of fastening plates at the same time, the plurality of fastening plates abut against the heat exchange pipe, and the surface, abutting against the heat exchange pipe, of the fastening plate is provided with an anti-skid pattern, so that the water pressure in the heat exchange pipe can not burst the device from the port of the heat exchange pipe when the mounting head is closed, and the stability of the device is ensured.

[0015] 2. The water permeable hole can avoid the influence of the pressure of the liquid on the cooperation between the extrusion knob and the fastening plate, and the side, provided with the fastening plate, of the mounting head can abut against the heat exchange pipe, when the device is stably installed at the port of the heat exchange pipe, in order to avoid the continuous leakage of the liquid in the heat exchange pipe and affect the continuous use or maintenance of the coal economizer, the blocking plate is rotated out from the back of the baffle by the rotating shaft, so that the blocking plate can effectively block the water permeable hole, the whole operation process is simple and convenient, and the blocking efficiency of the leaking heat exchange pipe can be effectively ensured.

[0016] 3. The extrusion knob and the mounting head made of metal can ensure the strength of the device, and the prismatic structure on the outer surface of the extrusion knob and the mounting head can facilitate an operator to use a wrench to install the device, increase the torque during installation, the outer surface of the prismatic structure can be clamped by the wrench, so that the stability of the installation of the device is realized, and the operator can effectively install the device even if the operator's hands are wet. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a whole structure schematic view of the utility model.

[0018] Fig. 2 It is a sectional view of the utility model.

[0019] In the figure: 1, heat exchange pipe; 2, mounting head; 3, fastening plate; 4, extrusion knob; 5, baffle; 6, plugging plate; 7, rotating shaft; 8, mounting hole; 9, handle; 10, O-shaped sealing ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Embodiment one

[0022] A low-temperature economizer leakage overhauling device, structure as Figs. 1-2 shown, including mounting head 2, the side of mounting head 2 has multiple fastening plates 3, the side with fastening plate 3 of mounting head 2 is abutted with the port of heat exchange pipe 1, multiple fastening plates 3 are provided with extrusion knob 4 on the outer surface, the inside of the side of mounting head 2 away from fastening plate 3 is evenly provided with multiple sector baffles 5, multiple sector baffles 5 have water-permeable holes between them, multiple sector baffles 5 are provided with multiple plugging plates 6 at the center of circle through rotating shaft 7, and the plugging plate 6 can block the water-permeable hole. The outer surface of multiple fastening plates 3 has external threads, and the inner surface of extrusion knob 4 has internal threads matched with the external threads. The thickness of fastening plate 3 gradually increases from one end close to mounting head 2 to the other end, and the side of fastening plate 3 close to heat exchange pipe 1 has anti-slip lines.

[0023] When there is still liquid in the heat exchange pipe 1 flowing outwards, the plurality of fastening plates 3 of the device are sleeved on the port of the heat exchange pipe 1, and then the mounting head 2 is pushed, so that one side of the mounting head 2 with the fastening plates 3 abuts against the port of the heat exchange pipe 1, and then the extrusion knob 4 is screwed, so that the extrusion knob 4 moves along the fastening plates 3 away from the one end of the mounting head 2, and the thickness of the fastening plates 3 gradually increases from the one end close to the mounting head 2 to the other end, so that the extrusion knob 4 can simultaneously press the plurality of fastening plates 3 to abut against the heat exchange pipe 1, and the surface of the fastening plates 3 abutting against the heat exchange pipe 1 has anti-skid lines, so that the water pressure in the heat exchange pipe 1 cannot burst the device out of the port of the heat exchange pipe 1 when the mounting head 2 is closed, and the stability of the device is ensured.

[0024] Since there may still be liquid in the heat exchange pipe 1 when the device is installed, the water leakage pressure cannot affect the cooperation between the extrusion knob 4 and the fastening plates 3, so that one side of the mounting head 2 with the fastening plates 3 can abut against the heat exchange pipe 1, and when the device is stably installed on the port of the heat exchange pipe 1, in order to avoid the liquid in the heat exchange pipe 1 from continuing to leak and affecting the continued use or maintenance of the economizer, the blocking plate 6 is rotated out of the back of the baffle 5 by the rotating shaft 7, so that the blocking plate 6 can effectively block the water leakage hole. The whole operation process is simple and convenient, and the blocking efficiency of the leaking heat exchange pipe 1 can be effectively ensured.

[0025] The size of the blocking plate 6 is greater than that of the water leakage hole, the rotating shaft 7 penetrates through the baffle 5, one end of the rotating shaft 7 away from the blocking plate 6 is provided with a mounting hole 8, and the mounting hole 8 is provided with a handle 9.

[0026] Since the rotating shaft 7 penetrates through the baffle 5, and the end of the rotating shaft 7 is provided with the mounting hole 8, the handle 9 can be inserted into the mounting hole 8, the rotating shaft 7 is rotated by the handle 9, so that one end of the rotating shaft 7 with the blocking plate 6 can drive the blocking plate 6 to effectively block the water leakage hole. Since the size of the blocking plate 6 is greater than that of the water leakage hole, the liquid in the heat exchange pipe 1 cannot seep out of the gap between the blocking plate 6 and the baffle 5, and the sealing layer on the surface of the blocking plate 6 and the baffle 5 can further improve the sealing performance of the device, prevent the device from leaking when blocking the heat exchange pipe 1, and ensure the practicability of the device.

[0027] The mounting head 2 is provided with an O-shaped sealing ring 10 near one end of the heat exchange pipe 1. In order to avoid the liquid in the heat exchange pipe 1 from leaking from the abutting place between the end of the heat exchange pipe 1 and the mounting head 2, the O-shaped sealing ring 10 can effectively play a sealing effect, and the sealing performance of the device during plugging is improved.

[0028] Embodiment two

[0029] On the basis of the embodiment one, the extrusion knob 4 and the outer surface of the mounting head 2 have a prismatic structure, and the extrusion knob 4 and the mounting head 2 are both metal materials.

[0030] The extrusion knob 4 and the mounting head 2 made of metal materials can not only ensure the strength of the device, but also can facilitate the operator to use a wrench to install the device, increase the torque during installation, and the prismatic structure of the outer surface can facilitate the wrench to be clamped, so that the stability of the installation of the device is realized, and the operator's hands are prevented from being wet, so that the device cannot be effectively installed.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or additions or substitutions within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A device for leak repair of a cryogenic economizer, comprising a mounting head (2), characterized in that, One side of the mounting head (2) is provided with a plurality of fastening plates (3), the side of the mounting head (2) provided with the fastening plates (3) abuts against the port of the heat exchange pipe (1), the outer surface of the plurality of fastening plates (3) is sleeved with an extrusion knob (4), the side of the mounting head (2) away from the fastening plates (3) is uniformly provided with a plurality of fan-shaped baffles (5), the plurality of fan-shaped baffles (5) are provided with water permeable holes, the plurality of fan-shaped baffles (5) are provided with a plurality of blocking plates (6) at the center through a rotating shaft (7), and the blocking plates (6) can block the water permeable holes.

2. The low-temperature economizer leakage repair device according to claim 1, characterized in that, The outer surface of the plurality of fastening plates (3) is provided with external threads, and the inner surface of the extrusion knob (4) is provided with internal threads matched with the external threads.

3. The low-temperature economizer leakage repair device of claim 1, wherein, The thickness of the fastening plates (3) gradually increases from one end close to the mounting head (2) to the other end, and the side of the fastening plates (3) close to the heat exchange pipe (1) is provided with anti-skid lines.

4. The low-temperature economizer leakage repair device of claim 1, wherein, The size of the blocking plates (6) is greater than that of the water permeable holes, the rotating shaft (7) penetrates through the baffle (5), one end of the rotating shaft (7) away from the blocking plate (6) is provided with a mounting hole (8), and the mounting hole (8) is provided with a handle (9).

5. The low-temperature economizer leakage repair device of claim 4, wherein, The surfaces of the blocking plates (6) and the baffle (5) are provided with sealing layers, and the blocking plates (6) abut against the baffle (5).

6. The low-temperature economizer leakage repair device of claim 1, wherein, One end of the mounting head (2) close to the heat exchange pipe (1) is provided with an O-shaped sealing ring (10).

7. The low-temperature economizer leakage repair device of claim 1, wherein, The outer surfaces of the extrusion knob (4) and the mounting head (2) are provided with prismatic structures, and the extrusion knob (4) and the mounting head (2) are both made of metal.

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