Heat exchange device for oil gas recovery

Abstract

The utility model discloses a heat exchange device for oil gas recovery, which relates to the technical field of oil gas recovery and comprises a sheet bar, and a sealing washer is arranged on the edge of the side surface of the sheet bar. A plurality of sealing strips are arranged on the side surfaces of the plate sheets; the length of the sealing strips is smaller than the inner side width of the sealing washers; one end of each sealing strip is connected with the inner side of one side edge of the sealing gasket, the adjacent sealing strips are connected to the two opposite side edges of the sealing gasket respectively, and fluid channels which are folded back and forth are formed in the side faces of the plate sheets; the sealing strips are arranged on the inner sides of the sealing washers on the side faces of the plate pieces, the sealing strips can play a supporting role between the middle portions of the plate pieces and enable the side faces of the plate pieces to form fluid channels which are folded back and forth, flowing dead zones are remarkably reduced, fluid makes full contact with all the positions of the plate pieces, and the heat exchange efficiency of the plate type heat exchange device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil gas recovery technical field, especially in oil gas recovery heat exchange device for. BACKGROUND

[0002] Oil gas recovery is an energy-saving and environment-friendly technology, which recovers oil gas discharged in the production, transportation, loading and unloading process of oil products by using oil gas recovery technology, prevents air pollution caused by oil gas volatilization, eliminates safety hazards, replaces the heat in oil gas, improves the utilization rate of energy, reduces economic losses, and thus obtains considerable benefit returns.

[0003] The heat exchange device is the core component of oil gas recovery. For example, the utility model patent oil gas recovery system with precooling (CN206184021U) uses multiple plate heat exchangers to realize heat exchange of high-temperature petroleum gas. The plate heat exchanger is mainly composed of a series of metal sheets. Fluid flows in the narrow flow channel surrounded by the sealing gasket between the sheets, and heat is transferred through the sheets.

[0004] For example, the invention patent plate heat exchanger and plate heat exchanger support (CN109405603A) flow between the corner holes at both ends of the heat exchange plate. The fluid is prone to form a straight current and cannot fully cover the plate for sufficient heat exchange. In the prior art, a convex rib and a groove are arranged on the side surface of the plate to inhibit the straight current, improve the fluid coverage, and reduce the fluid dead zone. For example, the utility model patent plate heat exchanger (CN219956226U). However, the main flow direction of the fluid on the side surface of the plate is still the direction of the connecting line of the fluid holes at both ends. The main flow has a large flow rate, and the flow rate in other areas is small, so the fluid cannot fully cover and contact the plate in all places, which limits the improvement of the plate heat exchange efficiency. UTILITY MODEL CONTENTS

[0005] The utility model discloses a heat exchange device for oil gas recovery.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A heat exchange device for oil gas recovery, comprising a plate, a sealing gasket is arranged on the side surface edge of the plate; a plurality of sealing strips are arranged on the side surface of the plate, the length of the sealing strip is less than the inside width of the sealing gasket, one end of the sealing strip is connected to the inside of one side of the sealing gasket, and the adjacent sealing strips are connected to the opposite two side edges of the sealing gasket, and the side surface of the plate forms a reciprocating backfolding fluid channel.

[0008] Further, a plurality of herringbone convex ribs are uniformly arranged on the side surface of the plate corresponding to the fluid channel.

[0009] Further, four fluid holes are arranged on the plate, and the fluid holes are located inside the sealing gasket, and the sealing gasket surrounds two fluid holes.

[0010] Further, the plate is arranged between the fixed clamping plate and the movable clamping plate.

[0011] Further, the fixed clamping plate and the movable clamping plate clamp the plate through the bolts.

[0012] Further, the plate is arranged between the fixed clamping plate and the movable clamping plate.

[0013] Further, the fixed clamping plate is provided with a fluid port.

[0014] Compared with the prior art, the plate heat exchange device has the following beneficial effects:

[0015] The sealing strip is arranged on the inner side of the sealing gasket on the side of the plate, and the sealing strip not only plays a supporting role between the middle part of the plate, but also forms a reciprocating folding fluid channel on the side of the plate, thereby significantly reducing the flow dead zone, enabling the fluid to fully contact each part of the plate, and being beneficial to improving the heat exchange efficiency of the plate heat exchange device.

[0016] The plate is provided with a convex rib on the side in the fluid channel, the convex rib can change the flow direction of part of the fluid, enable the fluid to fully contact each part of the plate, and increase the heat exchange area of the plate, thereby being beneficial to further improving the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a plate structure schematic view of the utility model.

[0018] Figure 2 It is a three-dimensional structure schematic view of the utility model.

[0019] Figure 3 It is an explosion schematic view of part of the plate of the utility model.

[0020] Figure 4 It is a top view schematic view of the utility model.

[0021] Figure 5 It is a side view schematic view of the utility model.

[0022] In the drawing: 1, plate; 2, fluid hole; 3, sealing gasket; 4, sealing strip; 5, convex rib; 6, fixed clamping plate; 7, movable clamping plate; 8, bolt; 9, fluid port; 10, rear support plate; 11, limiting column; 12, notch. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model clearer and more comprehensible, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described examples are only a part of the examples of the utility model, but not all the examples. The components of the utility model embodiments described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] In the description of the utility model, unless explicitly defined and limited, the terms "mounting", "connection" and "connection" that may appear should be understood broadly, for example, it can be fixedly connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In the description of the utility model, it should be noted that, unless explicitly defined and limited, the term "provided with" that may appear should be understood broadly, for example, the object of "provided with" can be part of the body, or it can be arranged separately from the body and connected to the body, and the connection can be detachable or non-detachable. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] The utility model will be further described in detail below in combination with examples.

[0027] The specific embodiments of the heat exchange device for oil gas recovery provided by the utility model are as follows:

[0028] Please refer to Figures 1-5 , the heat exchange device for oil gas recovery comprises a fixed clamping plate 6, a movable clamping plate 7, a rear support plate 10 and a plurality of plate pieces 1, the fixed clamping plate 6 is connected with a limiting column 11 vertically between the upper end and the lower end of the rear support plate 10, the movable clamping plate 7 is located between the fixed clamping plate 6 and the rear support plate 10 and can move between the fixed clamping plate 6 and the rear support plate 10.

[0029] The plurality of plate pieces 1 are placed vertically and overlapped and located between the fixed clamping plate 6 and the movable clamping plate 7; the fixed clamping plate 6 and the movable clamping plate 7 are tensioned and clamped to the plate pieces 1 through the bolts 8; specifically, the edges of the fixed clamping plate 6 and the movable clamping plate 7 are provided with a plurality of corresponding grooves, the bolts 8 pass through the grooves, and the outer sides of the bolts 8 are connected with nuts through threads, and the nuts are tightened to make the movable clamping plate 7 close to the fixed clamping plate 6, so as to clamp the plate pieces 1.

[0030] The upper and lower edges of the plate 1 are both provided with notches 12 corresponding to the limiting columns 11. The plate 1 slides along the limiting columns 11 through the notches 12, and the limiting columns 11 limit the plate 1 to ensure that the positions of each plate 1 correspond to each other.

[0031] Sealing gaskets 3 are installed on the side edges of the plates 1. When the fixed clamping plates 6 and the movable clamping plates 7 clamp the plates 1, gaps are formed between the plates 1. High-temperature oil and gas and cold fluid can pass through the gaps on both sides of the plates 1, respectively, to achieve heat exchange through the plates 1. The gaps on both sides of the plates 1 are connected to the oil and gas hot flow channel and the cold flow channel, respectively.

[0032] Each of the four corners of plate 1 is provided with a fluid hole 2, for a total of four fluid holes 2. All four fluid holes 2 are located inside a sealing gasket 3, which surrounds two of the fluid holes 2. The sealing gasket 3 on the other side of plate 1 surrounds the other two fluid holes 2. The sealing gaskets 3 on opposite sides of adjacent plates 1 correspond to each other, connecting both sides of plate 1 to the oil and gas hot flow channel and cold flow channel, respectively.

[0033] The fluid holes 2 on each plate 1 correspond to each other; the fixed clamping plate 6 is provided with four fluid ports 9 for fluid passage; these four fluid ports 9 correspond to the fluid holes 2 on each plate 1. The fluid ports 9 are tubular and extend through the fixed clamping plate 6. The outer ends of the fluid ports 9 are provided with flanges for convenient connection to the external cold flow inlet and outlet pipes, and the oil and gas hot flow inlet and hot flow outlet pipes, respectively.

[0034] It should be noted that the plate 1 closest to the fixed plate 6 has a sealing gasket 3 on the side of the plate 1 facing the fixed plate 6, surrounding four fluid holes 2, preventing fluid from entering between the plate 1 and the fixed plate 6. The plate 1 closest to the movable plate 7 has no fluid holes 2, preventing fluid from entering between the plate 1 and the movable plate 7.

[0035] Several horizontal sealing strips 4 are provided on the side of the plate 1. In this embodiment, the height of the sealing strips 4 protruding from the side of the plate 1 is the same as that of the sealing gasket 3, and the sealing strips 4 are integrally connected to the sealing gasket 3. The length of the sealing strips 4 is less than the horizontal width of the inner side of the sealing gasket 3; one end of the sealing strips 4 is connected to the inner side of one side of the sealing gasket 3, and adjacent sealing strips 4 are respectively connected to the two opposite sides of the sealing gasket 3. These two sides are the two vertical sides of the sealing gasket 3 in this embodiment. In this way, there is a gap between the end of the sealing strip 4 away from the connection with the sealing gasket 3 and the other side of the sealing gasket 3. The sealing gasket 3 and the sealing strips 4 form a reciprocating fluid channel on the side of the plate 1.

[0036] Since the sheet 1 is a thin metal sheet, it can be bent in the natural state; when the fixed clamping plate 6 and the movable clamping plate 7 clamp the sheet 1, the edges of the sheet 1 are pressed against each other, but the middle part of the sheet 1 is not supported, and the pressure difference between the cold flow and the hot flow will cause the middle part of the sheet 1 to deform, the deformation acts on the edges to pull, which will affect the sealing effect of the sealing gasket 3 at the edges of the sheet 1. The presence of the sealing strip 4 forms mutual support and mutual force between the compressed middle part of the sheet 1, realizes the support and compression of the middle part of the sheet 1, and further reduces the deformation.

[0037] The sealing gasket 3 and the sealing strip 4 form a reciprocating folded fluid channel on the side of the sheet 1, and the width of the channel should not be greater than twice the diameter of the fluid hole 2 and not less than the diameter of the fluid hole 2. The reciprocating folded fluid channel allows fluid to flow from all parts of the side of the sheet 1, greatly reducing the flow dead zone compared to the whole piece fluid area in the prior art, allowing the cold flow and the hot flow to fully exchange heat on both sides of the sheet 1, and significantly improving the heat exchange efficiency.

[0038] In the embodiment, the side of the sheet 1 corresponding to the fluid channel is uniformly provided with a plurality of herringbone-shaped ribs 5, and the height of the ribs 5 protruding from the side of the sheet 1 is not greater than one fifth of the protruding height of the sealing gasket 3; in the process of fluid passing through the fluid channel, part of the fluid attached to the side of the sheet 1 changes direction under the influence of the herringbone-shaped ribs 5, which can further reduce the flow dead zone, make the fluid contact with all parts of the sheet 1, and in addition, the ribs 5 increase the heat exchange area of the sheet 1, which is beneficial to the improvement of the heat exchange efficiency.

[0039] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions described in the foregoing embodiments without creative labor, or make equivalent substitutions for some technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A heat exchange device for oil and gas recovery, comprising a plate (1), the plate (1) being provided with a sealing gasket (3) at the side edge; characterized in that: The plate (1) is provided with a plurality of sealing strips (4) on the side surface, the length of the sealing strip (4) is less than the inner width of the sealing gasket (3), one end of the sealing strip (4) is connected to the inner side of one side of the sealing gasket (3), and the adjacent sealing strips (4) are connected to the opposite two sides of the sealing gasket (3) respectively, and the side surface of the plate (1) forms a reciprocating backfolding fluid channel.

2. The heat exchange device for oil and gas recovery of claim 1, wherein: The plate (1) is uniformly provided with a plurality of herringbone-shaped ribs (5) on the side surface corresponding to the fluid channel.

3. The heat exchange device for oil and gas recovery of claim 1, wherein: The plate (1) is provided with four fluid holes (2), the fluid holes (2) are located on the inner side of the sealing gasket (3), and the sealing gasket (3) surrounds two of the fluid holes (2).

4. The heat exchange device for oil and gas recovery of claim 1, wherein: Further comprising a fixed clamping plate (6) and a movable clamping plate (7), the plate (1) is provided with a plurality of plates and is located between the fixed clamping plate (6) and the movable clamping plate (7).

5. The heat exchange device for oil and gas recovery of claim 4, wherein: The fixed clamping plate (6) and the movable clamping plate (7) are pulled and clamped to the plate (1) by the bolts (8).

6. The heat exchange device for oil and gas recovery of claim 4, wherein: Further comprising a rear support plate (10), the movable clamping plate (7) is located between the fixed clamping plate (6) and the rear support plate (10); a limiting column (11) is connected perpendicularly between the fixed clamping plate (6) and the rear support plate (10), and the edge of the plate (1) is provided with a notch (12) corresponding to the limiting column (11).

7. The heat exchange device for oil and gas recovery of claim 4, wherein: The fixed clamping plate (6) is provided with a fluid port (9).

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