TWI642606B - Oil tank floating roof sealing device - Google Patents

Abstract

An oil tank floating roof sealing device for arranging an outer diameter of a floating body portion as a sealing member between the floating body portion and an oil groove inner diameter wall surface, the sealing device is provided with a radial direction around a fixing frame a cross-shaped inner layer plate having a closed shape and forming a circular shape around the fixing frame; at least one inner spring piece is disposed on the inner diameter wall surface of the inner layer plate to apply a force to the outer diameter direction of the inner layer plate; An outer layer is disposed on an outer side of the laminate and a circular shape is formed around the inner layer, and an inner side of the outer layer is partially separated from an outer side of the inner layer to form a space, and an outer side of the outer layer is further Further bonding a layer of fibrous material to make it more wear resistant and avoiding sparking due to friction; and providing at least one outer spring in the space between the outer layer and the inner layer to apply a force to the outer diameter of the outer layer Therefore, the sealing device and the inner wall surface of the oil groove are more wear-resistant, the sealing effect is better, and the service life is longer.

Description

Oil tank floating roof sealing device

The present invention relates to an oil tank floating roof sealing device, in particular to a sealing structure applied between the outer diameter of the floating body portion and the inner wall of the oil groove in the oil groove.

The oil tank structure of the conventional oil storage, in addition to the hollow tank for oil storage, additionally needs to provide a floating roof device in the oil tank, by which the floating roof device floats over the liquid surface of the oil tank for oil storage, so as to The rise or fall of the height of the oil reservoir rises or falls, thereby sealing the top surface of the oil tank to reduce oil and gas emissions.

The applicant of the Republic of China patent No. M418899 "oil tank floating roof device" is provided with a floating body inside the oil tank, and the outer diameter of the floating body portion is provided with a sealing structure, which is used as the floating body portion and the inner diameter of the oil tank. Sealing elements between the walls to avoid oil and gas leakage. The floating body portion includes a plurality of connecting rods and a plurality of floating body units, and the floating body units are respectively fixed to the plurality of connecting rods to form a floating body portion in the longitudinal direction and the lateral direction. In other words, the floating body portion in combination with the sealing structure constitutes a piston that fits the inner diameter of the oil groove.

The purpose and function of the M418899 patent is to form a low-cost, simple assembly and a mutual assembly between the floating body units by interlocking the connecting grooves of the connecting rods, the reinforcing plates and the locking elements around the floating body unit. The upper and lower ends of the joint are stable and can prevent deformation damage caused by rising or falling buoyancy of the oil level. However, its sealing structure, durability and safety still have the need to further improve performance.

For example, the conventional oil tank floating roof device shown in the first and second figures includes a plurality of floating body units A1 and a plurality of connecting rods B1, and the longitudinal and lateral sides of each floating body unit A1 are connected by the connecting rods B1. Locking to form a floating body A. The outer diameter of the floating portion A is coupled to a sealing device C. The sealing device 3 includes a long supporting leg C1 and a foaming body C3. The long supporting leg C1 defines at least one recessed groove. The side of the floating body unit is embedded on one side; the side of the foam C3 is in close contact with the wall surface of the oil groove B, and the other side is between the top surface of the long support leg C1, and then a bolt is screwed to fix the side of the long support leg C1. In the foam C3, the foam C3 abuts against the wall surface of the oil tank B to prevent oil and gas from leaking out.

However, since the conventional oil groove sealing device uses the foam C3 as the main sealing member in contact with the inner wall surface of the oil groove B, the foam C3 and the oil groove B may be worn for a certain period of time due to wear. Leaking oil and gas, so that regular maintenance and maintenance must be carried out, not only is it time consuming and labor cost, but also the staff often work in oil tanks with toxic gases to increase the probability of accidents. In addition, when the metal scraper and the inner wall surface of the oil groove are relatively slid, the fireworks are easily generated, and there is also a high risk.

The main purpose of this creation is to provide an oil tank floating roof sealing device with higher structural strength, more wear resistance and longer service life.

The oil tank floating roof sealing device of the present invention is used for setting an outer diameter of a floating body portion as a sealing member between the floating body portion and an inner wall surface of an oil groove, and the sealing device is disposed on a periphery of a fixed frame a radial cross-section is a closed ring-shaped inner layer plate and forms a circle around the fixing frame; at least one inner spring piece is disposed on the inner diameter wall surface of the inner layer plate to apply a force to the outer diameter direction of the inner layer plate Forming an outer layer of carbon fiber on the outer side of the inner layer and forming a circle around the inner layer, and partially separating the inner side of the outer layer from the outer side of the inner layer to form a Space, the outer side of the outer panel is further combined with a layer of fibrous material to make it more wear resistant and avoid sparking due to friction; and at least the space between the outer panel and the inner panel is at least An outer reed is configured to apply a force to the outer diameter of the outer layer, thereby making the sealing device and the inner wall surface of the oil groove more wear-resistant, the sealing effect is better, and the service life is longer.

Based on this, the oil tank floating roof device provided by the present invention comprises: a fixing frame; an inner layer plate, the radial section is curved into a closed ring shape, and is fixedly disposed on the fixing frame to surround the fixing The frame is formed into a circular shape; at least one inner spring piece is fixed to the inner diameter of the inner shape of the inner layer plate to apply a force to the inner diameter plate to the outer diameter direction; and an outer layer plate is disposed outside the inner layer plate The side surface is formed to form a circle around the inner layer plate, and the inner side surface of the outer layer plate is partially separated from the outer side surface of the inner layer plate to form a space, and the outer side surface of the outer layer plate is further combined with a layer of fiber material; And at least one outer spring piece disposed in the space between the outer layer plate and the inner layer plate to apply a force to the outer diameter plate to the outer diameter direction.

Preferably, the present invention forms the radial cross-sectional shape of the inner spring piece into a spiral shape.

Preferably, the present invention forms the space by extending the outer panel from its free end to the opposite end without contacting a length of the inner panel.

In the present invention, the outer leaf piece is formed into a U shape, and one end of the outer leaf piece is fixed to the fixing frame, and the other end is opposed to the inner side surface of the outer layer board.

The inner reeds of the present invention may be plural, and are radially arranged centering on the center of the inner layer.

In this creation, the outer reeds may be plural, and are radially arranged around the center of the inner layer.

The fibrous material to which the present invention is bonded to the outer side of the outer panel may be a carbon fiber material, a glass material or any suitable fibrous material.

1‧‧‧Floating Department

10‧‧‧ floating body unit

2‧‧‧ oil tank

20‧‧‧ Connecting rod

21‧‧‧ Engagement slot

3‧‧‧ Sealing device

31‧‧‧ Fixing frame

32‧‧‧ fixed seat

33‧‧‧Roller

34‧‧‧ Inner board

35‧‧‧ inner reed

36‧‧‧ outer board

361‧‧‧Metal sheet

362‧‧‧Fiber material

37‧‧‧Outer reed

A‧‧‧ floating body

A1‧‧‧ floating body unit

B‧‧‧ oil tank

B1‧‧‧ connecting rod

C‧‧‧Sealing device

C1‧‧‧Long support feet

C3‧‧‧Foam

The first figure shows a schematic view of a conventional oil tank floating roof with a sealing device; the second figure is a partial enlarged view of a portion II of the first figure; the third figure shows the oil tank floating roof structure with the sealing device of the present invention. 4 is a partially enlarged plan view of a portion IV of the third drawing; a fifth partial view showing a partial perspective view of the structure of the sealing device of the present invention; and a partially enlarged cross-sectional view of a portion VI of the fourth drawing of the fourth drawing. .

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present invention after reading this specification.

As shown in the third figure, the oil tank floating roof sealing device of the present invention is a sealing structure for the floating body portion 1 in the oil groove and the inner wall surface of the oil groove 2. The floating body portion 1 includes a plurality of floating body units 10 and a plurality of connecting rods 20. The longitudinal and lateral sides of each floating body unit 10 are connected and locked by the connecting rods 20 to form a floating body portion 1 and float. The outer diameter of the body 1 is locked to a sealing device 3. In other words, the floating body portion 1 is similar to the piston installed inside the oil groove 2, and by providing the sealing device 3 at the outer diameter of the piston, the oil can be prevented from rising from the inner wall surface of the piston and the oil groove by the piston rising or falling in the oil groove 2. The gap between the leaks.

The present invention combines the floating body unit 10 and the connecting rod 20 in such a manner that the longitudinal or lateral sides of the floating body unit 10 are embedded in the engaging groove 21 of the connecting rod 20, and then respectively locked by at least one self-tapping screw, so that each The floating body units 10 can be connected longitudinally or laterally.

Referring to the fourth and fifth figures, the preferred embodiment of the sealing device 3 provided in the floating body portion 1 comprises: a fixing frame 31, preferably having a suitable thickness. The steel plate is bent and formed, and a fixing seat 32 is coupled to the side of the fixing frame 31; the fixing frame 31 is formed into a circular shape corresponding to the inner diameter of the oil groove 2; the fixing base 32 and the fixing frame 31 are used together for fixing and floating. The outer diameter of the body 1.

Furthermore, the floating body portion 1 of the present invention further includes an inner layer plate 34 which is formed by bending a steel plate having an appropriate thickness into a circular shape corresponding to the inner diameter of the oil groove 2, and making the diameter thereof The cross-section is bent into a closed ring shape, preferably a water drop shape as shown in the fourth figure; the bent inner layer plate 34 is fixedly disposed on the fixing frame 31 to form a circular shape around the fixing frame 31.

The floating body portion 1 of the present invention further includes a plurality of inner spring pieces 35 which are fixed to the inner diameter of the ring shape of the inner layer plate 34 to apply a force to the inner layer plate 34 in the outer diameter direction. In the preferred embodiment of the present invention, the inner spring piece 35 is formed in a spiral shape in a radial cross-sectional shape, and is radially arranged around the center of the inner layer plate 34, and is then guided by the roller 33. The inner reed 35 stabilizes its position. Further, the center of the spiral of the inner reed 35 can be threaded to strengthen the overall structural strength; the natural elastic force of the spiral shape acts on the inner side of the inner panel 34. The inner layer plate 34 has a force that expands in the outer diameter direction. In the embodiment of the present creation, the inner panel 34 may be a metal plate.

The floating body portion 1 of the present invention further includes an outer layer plate 36 including a metal plate 361 of a suitable thickness and a fiber material 362 (shown in the sixth figure) bonded to the outer side surface of the metal plate 361, the fiber material 361 may be carbon fiber, glass fiber or any suitable fiber material; the outer layer 36 is formed into a suitable arc shape and partially fixed to the outer side of the inner layer plate 34 while forming a circle around the inner layer plate 34; The partial fixing of the outer layer plate 36 and the inner layer plate 34 means that one end of the outer layer plate 36 is fixed to the inner layer plate 34 such that the inner side surface of the outer layer plate 36 and the outer side surface of the inner layer plate 34 are partially separated to form. A space. More specifically, the outer panel 36 is formed by extending a length from its free end to the opposite end without contacting the inner panel 34. Further, a plurality of outer spring pieces 37 are provided in the space between the outer layer plate 36 and the inner layer plate 34, and the outer spring piece 37 may have a U shape, and one end of the outer spring piece 37 is fixed to the fixing frame 31 to be the inner layer. The center of the plate 34 is radially arranged at the center, and the opposite end of the outer leaf piece 37 is in contact with the inner side surface of the outer layer plate 36. Therefore, the outer layer plate 36 can be further urged in the outer diameter direction by the outer spring piece 37. .

With the oil tank floating roof sealing device of the present invention, when the sealing device 3 is installed in the oil groove 2 together with the floating body portion 1, the fiber material 362 on the outer side of the outer layer plate 36 and the inner wall surface of the oil groove 2 are Contacting, and acting on the inner layer 34 by the elastic force of the inner spring piece 35, And by the elastic force of the outer spring piece 37 acting on the outer layer plate 36, the outer layer plate 36 and the inner wall surface of the oil groove 2 are maintained to have better sealing property to avoid oil and gas leakage; further, since the outer side plate 36 is bonded to the outer side The fiber material 361 is therefore more capable of improving the wear resistance, and avoids the problem that the conventional components of the same type need to be manually put into the oil tank for repair and replacement because of the easy wear and tear; and because the fiber material 362 and the inner wall surface of the oil groove 2 slide relative to each other. It does not generate sparks, so it can ensure the safety of the oil tank operation.

The above is only a preferred embodiment for explaining the present invention, and is not intended to impose any form of restriction on the present creation, so that any modifications or changes to the creation made in the same creative spirit are made. , should still be included in the scope of protection of this creative intent.

Claims (9)

An oil tank floating roof sealing device is provided for arranging an outer diameter of a floating body portion as a sealing member between the floating body portion and an oil groove inner diameter wall surface, the sealing device comprising: a fixing frame; an inner layer a plate whose radial cross section is bent into a closed ring shape and fixedly disposed on the fixing frame to form a circular shape around the fixing frame; at least one inner reed piece fixed to the ring shape of the inner layer plate An inner diameter for applying a force to the outer diameter direction of the inner layer; an outer layer disposed on the outer side of the inner layer to form a circle around the inner layer, and the inner side of the outer layer and the inner layer Forming a space between the outer sides of the laminate, the outer side of the outer panel is bonded with a thickness of fibrous material; and at least one outer spring is disposed between the outer panel and the inner panel And applying a force to the outer layer in the outer diameter direction. The oil tank floating roof sealing device according to claim 1, wherein the inner reed has a radial cross-sectional shape of a spiral shape. The oil sump floating roof sealing device of claim 2, wherein the outer layer plate forms the space from a free end thereof to the opposite end and does not extend in contact with the inner layer plate. The oil tank floating roof sealing device according to claim 3, wherein the outer spring piece has a U shape, one end of the outer spring piece is fixed to the fixing frame, and the opposite end end is in contact with the inner side surface of the outer layer plate. . The oil tank floating roof sealing device according to claim 4, wherein the inner spring piece is plural, and is radially arranged around a center of the inner layer plate. The oil tank floating roof sealing device according to claim 5, wherein the outer spring piece is plural, and is radially arranged around a center of the inner layer plate. The oil tank floating roof sealing device of claim 6, wherein the outer layer plate comprises a metal plate, and the fiber material is bonded to an outer side surface of the metal plate. The oil tank floating roof sealing device according to claim 7, wherein the fiber material is a carbon fiber material. The oil tank floating roof sealing device according to claim 7, wherein the fiber material is a glass fiber material.