Fixing device for inspection hole cover plate of heat exchanger

Abstract

The utility model provides a heat exchanger inspection hole cover plate fixing device, a cover plate is covered on an inspection hole on the top of a heat exchanger, the cover plate fixing device is arranged on the top of the heat exchanger, the cover plate fixing device comprises two supporting seats, a fixing shaft and two eccentric wheels, and the two supporting seats are respectively fixed on the left side and the right side of the top of the heat exchanger. Supporting holes are formed in the two supporting seats respectively, the left end and the right end of the fixing shaft penetrate out of the supporting holes of the two supporting seats respectively, locking installation of the fixing shaft and the supporting seats is achieved through a locking structure, the two eccentric wheels are fixedly arranged on the fixing shaft in a sleeving mode respectively and correspond to the cover plate in position, and each eccentric wheel and the fixing shaft are eccentrically arranged. And the cover plate is pressed on the top surface of the heat exchanger through the two eccentric wheels. Compared with the prior art, the utility model has the advantage that the cover plate is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to a heat exchanger, in particular to a device for fixing a cover plate of an inspection hole of a heat exchanger. Background Art

[0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid, also known as heat exchanger. Heat exchanger is a general equipment in chemical, petroleum, power, food and many other industrial sectors, and plays an important role in production. In chemical production, heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler, etc., and is more widely used. Under normal circumstances, there are inspection holes on the upper end of the heat exchanger to check the internal structure of the heat exchanger and for maintenance. For the convenience of maintenance, most inspection hole covers are screwed on the main body of the heat exchanger. During maintenance and inspection, the screws on them need to be removed one by one. After the maintenance and inspection is completed, the bolts need to be tightened one by one, which is very inconvenient and time-consuming. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provides a heat exchanger inspection hole cover plate fixing device to achieve convenient disassembly and assembly of the cover plate.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A heat exchanger inspection hole cover plate fixing device, the inspection hole on the top of the heat exchanger is covered with a cover plate, and the top of the heat exchanger is provided with a cover plate fixing device, the cover plate fixing device includes two support seats, a fixed shaft, and two eccentric wheels, the two support seats are respectively fixed on the left and right sides of the top of the heat exchanger, and the two support seats are respectively provided with support holes, the left and right ends of the fixed shaft respectively pass outward from the support holes of the two support seats and the locking installation of the fixed shaft and the support seats is realized through a locking structure, the two eccentric wheels are respectively fixedly sleeved on the fixed shaft and correspond to the position of the cover plate, each eccentric wheel is eccentrically arranged between the fixed shaft, and the cover plate is pressed against the top surface of the heat exchanger through the two eccentric wheels.

[0006] As a preferred solution for the above-mentioned cover plate fixing device, the locking structure includes two locking nuts, and external thread sections are respectively provided at the left and right ends of the fixed shaft. The external thread sections at the left and right ends of the fixed shaft respectively pass outward from the support holes of the two support seats and the locking installation of the fixed shaft and the support seat is achieved by tightening the locking nuts.

[0007] As a preferred solution of the above-mentioned cover plate fixing device, threaded holes are respectively opened at the left and right ends of the fixing shaft, and the two external thread sections are respectively threadedly connected to the threaded holes at the left and right ends of the fixing shaft.

[0008] As a preferred solution of the above-mentioned cover plate fixing device, a handle is provided on the middle section of the fixing shaft.

[0009] As a preferred solution of the above-mentioned cover plate fixing device, the eccentric wheel is fixedly mounted to the fixed shaft by a lateral set screw.

[0010] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0011] The utility model provides a heat exchanger inspection hole cover plate fixing device, which includes a fixed shaft with an eccentric wheel. Both ends of the fixed shaft are rotatably supported on two support seats on the top of the heat exchanger and can be locked by a locking structure. In the locked state, the two eccentric wheels are used to press and install the cover plate; in the unlocked state, the fixed shaft is rotated by a certain angle to allow the eccentric wheel to detach from the cover plate, and the cover plate can be removed at this time, making the disassembly and installation operations of the cover plate very convenient and quick, saving time and effort, and providing convenience for maintenance and inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the installation structure of the utility model.

[0013] Figure 2 It is an exploded view of the main view of the utility model.

[0014] In the figure, 1 is a heat exchanger; 2 is a cover plate; 3 is a support seat; 4 is a fixed shaft; 5 is an eccentric wheel; 6 is a lateral set screw; 7 is a handle; 8 is a locking nut; and 9 is an external threaded section. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on 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.

[0016] Please refer to Figure 1 to Figure 2The present embodiment discloses a heat exchanger inspection hole cover plate fixing device, wherein the inspection hole on the top of the heat exchanger 1 is covered with a cover plate 2, and the top of the heat exchanger 1 is provided with a cover plate fixing device, which includes two support seats 3, a fixed shaft 4, and two eccentric wheels 5. The two support seats 3 are respectively fixed on the left and right sides of the top of the heat exchanger 1, and the two support seats 3 are respectively provided with support holes. The left and right ends of the fixed shaft 4 respectively pass outward from the support holes of the two support seats 3 and realize the locking installation of the fixed shaft 4 and the support seat 3 through the locking structure. The two eccentric wheels 5 are respectively fixedly sleeved on the fixed shaft 4 and correspond to the position of the cover plate 2. The eccentric wheels 5 are fixedly installed with the fixed shaft 4 through the lateral set screws 6. Each eccentric wheel 5 is eccentrically arranged with the fixed shaft 4, and the cover plate 2 is pressed against the top surface of the heat exchanger 1 through the two eccentric wheels 5. A handle 7 is provided on the middle section of the fixed shaft 4, so that the operator can hold the handle 7 to rotate the fixed shaft 4. Among them, the part of the outer circumferential surface of the eccentric wheel 5 that is farther from the center axis is the distal part, and the part that is closer to the center axis is the proximal part. When the distal part of the outer circumferential surface of the eccentric wheel 5 faces the cover plate 2, the cover plate 2 is pressed by the eccentric wheel 5; when the distal part of the outer circumferential surface of the eccentric wheel 5 is away from the cover plate 2 and the proximal part faces the cover plate 2, the eccentric wheel 5 is separated from the cover plate 2 and the cover plate 2 is loosened.

[0017] The locking structure includes two locking nuts 8, and the left and right ends of the fixed shaft 4 are respectively provided with external thread sections 9, and the external thread sections 9 at the left and right ends of the fixed shaft 4 are respectively passed outward from the support holes of the two support seats 3 and are respectively tightened by tightening the locking nuts 8 to achieve the locking installation of the fixed shaft 4 and the support seat 3. Among them, the left and right ends of the fixed shaft 4 are respectively provided with threaded holes, and the two sections of external thread sections 9 are respectively threadedly connected with the threaded holes at the left and right ends of the fixed shaft 4. This split structural setting facilitates the installation of the fixed shaft 4 and the two support seats 3.

[0018] When the heat exchanger 1 works normally, the external threaded sections 9 at both ends of the fixed shaft 4 are tightened by tightening the locking nuts 8 to achieve the locking of the fixed shaft 4 and the two support seats 3. At this time, when the distal portions of the outer circumferential surfaces of the two eccentric wheels 5 on the fixed shaft 4 are in contact with the surface of the cover plate 2, the cover plate 2 is pressed by the eccentric wheels 5 to achieve the pressing installation of the cover plate 2 and the heat exchanger 1.

[0019] When the heat exchanger 1 needs to be inspected and repaired, first loosen the two locking nuts 8 so that the external thread sections 9 at both ends of the fixed shaft 4 can rotate in the support holes of the two support seats 3 respectively, then hold the handle 7 to drive the fixed shaft 4 to rotate a certain angle so that the distal part of the eccentric wheel 5 on the fixed shaft 4 leaves the cover plate 2. At this time, the cover plate 2 can be easily removed to expose the inspection hole, and the heat exchanger 1 can be inspected and repaired through the inspection hole. After the inspection is completed, install the cover plate 2, then hold the handle 7 to rotate the fixed shaft 4 in the opposite direction, re-press the distal part of the eccentric wheel 5 on the cover plate 2, and then tighten the two locking nuts 8. The entire disassembly and assembly process is convenient and quick.

[0020] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchanger inspection hole cover plate fixing device, the inspection hole on the top of the heat exchanger is covered with a cover plate, and the top of the heat exchanger is provided with a cover plate fixing device, characterized in that: The cover plate fixing device includes two support seats, a fixed shaft, and two eccentric wheels. The two support seats are respectively fixed on the left and right sides of the top of the heat exchanger. Support holes are respectively opened on the two support seats. The left and right ends of the fixed shaft respectively pass out from the support holes of the two support seats and realize the locking installation of the fixed shaft and the support seats through a locking structure. The two eccentric wheels are respectively fixedly mounted on the fixed shaft and correspond to the position of the cover plate. Each eccentric wheel is eccentrically arranged between the fixed shaft, and the cover plate is pressed against the top surface of the heat exchanger through the two eccentric wheels.

2. A heat exchanger inspection hole cover plate fixing device according to claim 1, characterized in that: The locking structure includes two locking nuts, and the left and right ends of the fixed shaft are respectively provided with external thread sections. The external thread sections at the left and right ends of the fixed shaft respectively extend outward from the support holes of the two support seats and the locking installation of the fixed shaft and the support seat is achieved by tightening the locking nuts.

3. A heat exchanger inspection hole cover plate fixing device as claimed in claim 2, characterized in that: The left and right ends of the fixed shaft are respectively provided with threaded holes, and the two external threaded sections are respectively threadedly connected with the threaded holes at the left and right ends of the fixed shaft.

4. A heat exchanger inspection hole cover plate fixing device according to claim 1, characterized in that: A handle is provided on the middle section of the fixed shaft.

5. A heat exchanger inspection hole cover plate fixing device according to claim 1, characterized in that: The eccentric wheel is fixedly mounted on the fixed shaft by means of lateral set screws.

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