Visual channel heat exchange device for heat energy recovery of oil field oil production plant

Abstract

The utility model discloses a visible channel heat exchange device for heat energy recovery of an oil field oil production plant, which comprises a box body, the box body comprises a plurality of groups of heat exchange plate pairs positioned in the box body, the plurality of groups of heat exchange plate pairs are arranged at equal intervals to form a visible in-line channel, and the plurality of groups of heat exchange plate pairs are integrated into a heat exchange plate bundle; the clamping plates are positioned on two sides of the heat exchange plate bundle; the material inlet is formed in one side of the box body; the material outlet is formed in the other side of the box body; the water inlet and the water outlet are formed in the top of the box body; the door covers are positioned on two sides of the box body and are movably connected with the box body; the support is positioned at the bottom of the box body. According to the heat exchange device, flow combination can be customized according to user requirements, and material accumulation, attachment and blockage are avoided; the overhaul end cover is easy to open and close and convenient to clean and overhaul; the maintenance efficiency and economical efficiency of the heat exchanger are improved, the service life of the heat exchange device can be greatly prolonged, and the device has extremely high applicability to severe environments and complex working conditions of oil fields.

Description

Technical Field

[0001] This utility model relates to a fishing rod, and more particularly to a heat exchange device for visible channel heat recovery in an oilfield production plant, belonging to the field of heat exchange. Background Technology

[0002] After desalination and sedimentation treatment, the mixed liquid of produced oil from geothermal water production stations collects heat through heat exchange. The heat-exchanged source water then enters a heat pump unit, and the produced high-temperature water is supplied to external heat-using units. In oilfield waste heat recovery, the quality of geothermal produced water is complex, with high mineralization, high salt content, strong corrosiveness, and numerous impurities, making it highly susceptible to clogging of process equipment, especially heat exchange equipment, directly affecting the efficiency of waste heat recovery. Under the same operating conditions, traditional heat exchange equipment is prone to clogging and leakage, resulting in cumbersome and costly maintenance.

[0003] Therefore, it is necessary to develop a new type of visible channel heat exchanger for heat recovery in oilfield production plants to solve the above-mentioned technical problems. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this utility model provides a visible channel heat exchange device for heat recovery in oilfield production plants. This heat exchange device allows for customized process combinations based on user needs, preventing material accumulation and blockage. The inspection end cover is easy to open and close, facilitating cleaning and maintenance. It improves the efficiency and economy of heat exchanger maintenance, significantly extending the service life of the device, and is highly adaptable to harsh oilfield environments and complex operating conditions.

[0005] To solve the above technical problems, the technical solution adopted by this utility model is: a visible channel heat exchange device for heat recovery in an oilfield production plant, the heat exchange device comprising: a housing, the housing comprising:

[0006] Several sets of heat exchange plate pairs are located inside the box. Multiple sets of heat exchange plate pairs are arranged at equal intervals to form visible straight channels. Multiple sets of heat exchange plate pairs are assembled into heat exchange plate bundles.

[0007] Clamping plates located on both sides of the heat exchanger plate bundle;

[0008] The material inlet is located on one side of the container, and the material outlet is located on the other side of the container;

[0009] The water inlet and water outlet are located at the top of the tank.

[0010] Doors located on both sides of the cabinet and movable in contact with the cabinet;

[0011] Support located at the bottom of the enclosure.

[0012] Preferably, the heat exchange plate pair is formed by multi-point resistance welding of two plates, and the two sets of heat exchange plate pairs are welded to form a visible straight channel.

[0013] Preferably, a front header and a rear header are welded to the front and rear ends of the housing, respectively, and the front header and the rear header are located on the front and rear sides of the heat exchange plate bundle, respectively.

[0014] Preferably, a front cover and a rear cover are installed on the front and rear headers respectively. One end of the front cover and the rear cover are movably connected to the header via a hinge, and the other end is detachably connected to the header via flange bolts.

[0015] Preferably, the material inlet is located at the lower part of the front header, and the material outlet is located at the upper part of the front header.

[0016] Preferably, an upper header is provided on the top side of the container near the front header, and a lower header is provided on the bottom side near the rear header. Both the upper and lower headers are semi-circular and welded to the container body.

[0017] Preferably, the top of the upper header has a water inlet and a water outlet arranged side by side, and the water inlet and water outlet are respectively connected to a visible straight channel.

[0018] Preferably, push-pull handles are provided on both the front and rear door covers.

[0019] Preferably, the heat exchange plate bundle is clamped by clamping plates on both sides by screws and nuts, and the support is fastened to the clamping plates by bolts.

[0020] Preferably, flow distribution partitions are vertically installed in the front header (11) and the rear header (12).

[0021] This invention proposes a visible channel heat exchanger for heat recovery in oilfield production plants, comprising multiple visible linear channels. Each channel's outlet to inlet is directly visible, and the flow path within each channel is unobstructed. The regular rectangular cross-section enhances the stability of material turbulence. This heat exchanger can be customized with process combinations to meet user needs, preventing material accumulation and blockage. The maintenance end caps are easy to open and close, facilitating cleaning and maintenance. It improves the efficiency and economy of heat exchanger maintenance and significantly extends the service life of the device, making it highly suitable for harsh oilfield environments and complex operating conditions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 for Figure 1 The left view.

[0024] Figure 3 for Figure 2 A sectional view.

[0025] Figure 4 This is a schematic diagram of the process combination.

[0026] Figure 5 This is a flowchart illustrating the process of this utility model.

[0027] In the diagram: 1. Material inlet; 2. Material outlet; 3. Water inlet; 4. Water outlet; 5. Visible straight channel; 6. Support; 7. Clamping plate; 8. Heat exchange plate pair; 10. Box body; 11. Front header; 12. Rear header; 13. Upper header; 14. Lower header; 15. Front door cover; 16. Rear door cover. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Example

[0030] like Figure 1-3 The illustrated heat exchange device for visible heat recovery in an oilfield production plant includes: a housing 10, which comprises:

[0031] Several sets of heat exchange plate pairs 8 are located inside the box. Multiple sets of heat exchange plate pairs 8 are arranged at equal intervals to form a visible straight channel 5. Multiple sets of heat exchange plate pairs 8 are assembled into a heat exchange plate bundle.

[0032] Multiple plates are arranged with equal sides and equal spacing, and then welded together by surfaces, points and lines to form a DC structure; the plates are welded together to form a heat exchange plate bundle, and the clamping plate and the support are bolted together to support the heat exchange plate bundle. The heat exchange plate bundle, clamping plate and support are interconnected and fastened into a whole.

[0033] Multiple visible straight channels are formed inside the box. Each channel's outlet to inlet is directly visible. There are no obstructions in the flow section of each channel. The regular rectangular cross-section can improve the stability of the material's turbulent flow.

[0034] Clamping plates 7 are located on both sides of the heat exchange plate bundle; the heat exchange plate bundle is clamped by the clamping plates on both sides through screws and nuts, and the support 6 is fastened to the clamping plates 7 by bolts.

[0035] The heat exchange plates are integrally hydraulically formed. Two plates are combined into a pair by multi-point resistance welding. The two pairs of plates are aligned and welded to form a visible straight channel. Multiple pairs of plates are assembled into a heat exchange plate bundle. The two ends of the heat exchange plate bundle are butt-welded to one side of the header shell, and the other side of the header is welded with a door cover flange (bolted to the door cover). The heat exchange plate bundle is clamped and fastened by two thick clamping plates through double-headed screws.

[0036] The number of processes (the number of times the fluid travels back and forth between the two ends of the plate bundle) can be adjusted arbitrarily according to the actual working conditions. By increasing or decreasing the number of process plates, it can be single-process, double-process, four-process, or multi-process, etc. The process combination can be customized according to user needs to achieve customized process settings.

[0037] like Figure 4As shown, taking a 12-channel system as an example: the number of channels per channel can be changed by adjusting the position of the "process allocation partition"; 2x6: materials are allocated to 2 processes within the chassis, with 6 channels per process; 6x2: materials are allocated to 6 processes within the chassis, with 2 channels per process; 3x4: materials are allocated to 3 processes within the chassis, with 4 channels per process; 4x3: materials are allocated to 4 processes within the chassis, with 3 channels per process; 12x1: materials are allocated to 12 processes within the chassis, with 1 channel per process; 1x12: materials are allocated to 1 process within the chassis, with 12 channels per process (no partition). And so on, enabling custom process settings.

[0038] Material inlet 1 is located on one side of the container, and material outlet 2 is located on the other side of the container; material inlet 1 is located at the lower part of the front header 11, and material outlet 2 is located at the upper part of the front header 11.

[0039] Water inlet 3 and water outlet 4 are located at the top of the housing; water inlet 3 and water outlet 4 are arranged side by side on the top of the upper header 13, and water inlet 3 and water outlet 4 are respectively connected to the visible straight channel. The heat exchange plate bundle is welded to the header and the process distribution unit; the heat exchange plate bundle is welded to the front header and the rear header respectively, and process distribution partitions (i.e. process distribution baffles) are welded inside the front header and the rear header respectively; custom process settings are realized through the process distribution partitions, and the heat exchange plate bundle is welded to the upper header and the lower header respectively.

[0040] Support 6 is located at the bottom of the housing. The support serves to provide structural support.

[0041] The heat exchange plate pair 8 is made of two plates by multi-point resistance welding, and the two sets of heat exchange plate pairs 8 are welded to form a visible straight channel 5.

[0042] The heat exchange unit, which is also the core component of this heat exchange device, uses corrugated plates with a honeycomb shape. The transition between the crests and troughs of the honeycomb is designed as a smooth and gentle curved surface, ensuring that the medium flows smoothly over the surface of the plate and does not easily accumulate material. The plate is formed using an automated forming production line.

[0043] The front and rear ends of the housing 10 are welded together with a front header 11 and a rear header 12, respectively. The front header 11 and the rear header 12 are located on the front and rear sides of the heat exchange plate bundle, respectively. Flow distribution baffles are vertically installed inside the front header 11 and the rear header 12.

[0044] Door covers are located on both sides of the container and are movably connected to the container; front door cover 15 and rear door cover 16 are respectively installed on the front header 11 and the rear header 12. One end of the front door cover 15 and the rear door cover 16 are movably connected to the header via a hinge, and the other end is detachably connected to the header via flange bolts. Both the front door cover 15 and the rear door cover 16 are equipped with push-pull handles.

[0045] One end of the door cover is fitted with a bearing hinge, and the other end is equipped with a push-pull handle. The door cover can be opened and closed freely without hoisting by removing the evenly distributed bolts around the door cover using an electric wrench. The door cover is connected to the header flange by bolts, and the sealing surface between the two is clamped with a fixed rubber gasket for sealing (flat sealing).

[0046] The top of the container 10 is provided with an upper header 13 on the side near the front header, and the bottom is provided with a lower header 14 on the side near the rear header. Both the upper header 13 and the lower header 14 are semi-circular and welded to the container body.

[0047] like Figure 5 As shown, the working process of this utility model is as follows: the material flows from one side of the front header into the visible straight channel through the flow distribution and flows out from the other side of the front header; the water flows from one side of the upper header into the narrow channel and flows out from the other side of the upper header; the material and water flow horizontally in opposite directions in their respective channels in the heat exchange plate bundle to achieve heat exchange.

[0048] Complex fluids enter the visible inline channel from one end of the front header, are divided into several flows by baffles, and the number of visible channels in each flow is adjusted according to flow rate changes to optimize the combination and maximize heat exchange efficiency and equipment performance. The fluid then flows out from the other end of the front header. If the pressure difference between the inlet and outlet of the fluid in the front header exceeds the design parameters during operation, cleaning of the channels is required. The covers of both the front and rear headers are opened to directly visualize the heat exchange surface within the wide flow channel (visible inline channel). Any accumulation or adhesion in the lower part of the flow channel or on the surface of the heat exchange plates is immediately apparent. Because the channels are directly visible, foreign matter and dirt can be quickly cleaned out using a high-pressure water gun or mechanical methods. The opening process is simple. After opening the covers, the flow can be optimized and adjusted according to the situation of blockage, extending the maintenance cycle, reducing the number of maintenance operations, and lowering maintenance costs.

[0049] The wide-side heat exchange channel of this heat exchange device features a visible, straight-through, unobstructed design, reducing pressure loss and improving the flow capacity of complex media under special operating conditions within the heat exchange channel. The straight-through channel design facilitates maintenance and cleaning; by opening the front and rear maintenance doors, the working surface of the heat exchange unit is within the visible range. The matrix-style symmetrical, honeycomb-shaped heat exchange surface increases fluid heat transfer efficiency and reduces the probability of high-solids-content media stagnation and accumulation.

[0050] The width of the flow channel can be set according to the actual water quality of the local area. The inlet and outlet of the flow channel are directly visible, which greatly improves the fluid flow capacity, prevents accumulation and blockage, and makes maintenance very convenient, reducing the maintenance costs of enterprises and saving energy and increasing efficiency.

[0051] The purpose of this invention is to provide a visible channel heat exchange device for heat recovery in oilfield production plants, solving problems such as easy clogging, leakage, and difficult maintenance. While ensuring the continuous and stable operation of the waste heat utilization system in oilfield production plants, it extends the regular maintenance cycle, improves heat exchange efficiency, reduces maintenance costs, and enhances the adaptability and service life of the device in complex environments. Improving the maintenance efficiency and economy of the heat exchanger also significantly extends the service life of the heat exchange device, making it highly applicable to harsh environments and complex operating conditions in oilfields. This invention solves problems such as easy clogging and difficult maintenance, extending the regular maintenance cycle, improving heat exchange efficiency, and reducing maintenance costs while ensuring the continuous and stable operation of the waste heat utilization system.

[0052] Specifically, the produced water from the oilfield's joint station, after being modified and treated, has a temperature of about 42°C. After heat exchange in the produced water heat exchanger, the produced water is cooled to about 39°C. The heat-exchanged source water then enters the heat pump unit to produce hot water at a temperature of over 75°C for external heating.

[0053] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A visual access heat exchange device for oilfield production plant heat recovery, characterized in that: The heat exchange device comprises a box body (10) comprising: a plurality of groups of heat exchange plate pairs (8) in the box body, the groups of heat exchange plate pairs (8) being arranged at equal intervals to form a visible straight-through channel (5), and the groups of heat exchange plate pairs (8) being combined into a heat exchange plate bundle; clamping plates (7) on both sides of the heat exchange plate bundle; a material inlet (1) on one side of the box body and a material outlet (2) on the other side of the box body; a water inlet (3) and a water outlet (4) on the top of the box body; door covers on both sides of the box body and movably connected to the box body; a support (6) on the bottom of the box body.

2. The visual access heat recovery heat exchanger for oilfield production facilities of claim 1, wherein: The heat exchange plate pairs (8) are formed by resistance welding of two plate pieces, and two groups of the heat exchange plate pairs (8) are welded to form the visible straight-through channel (5).

3. The visual access heat recovery heat exchanger for oilfield production facilities of claim 1, wherein: The front end and the rear end of the box body (10) are respectively welded and connected with a front header (11) and a rear header (12), and the front header (11) and the rear header (12) are respectively located on the front side and the rear side of the heat exchange plate bundle.

4. The visual access heat recovery heat exchanger for oilfield production facilities of claim 3, wherein: The front header (11) and the rear header (12) are respectively provided with a front door cover (15) and a rear door cover (16), one end of each of the front door cover (15) and the rear door cover (16) is movably connected to the header through a hinge, and the other end of each of the front door cover (15) and the rear door cover (16) is detachably connected to the header through a flange bolt.

5. The visual access heat recovery heat exchanger for oilfield production facilities of claim 1, wherein: The material inlet (1) is located at the lower part of the front header (11), and the material outlet (2) is located at the upper part of the front header (11).

6. The visual access heat recovery heat exchanger for oilfield production facilities of claim 1, wherein: An upper header (13) is arranged on the side of the top of the box body close to the front header, and a lower header (14) is arranged on the side of the bottom of the box body close to the rear header, and the upper header (13) and the lower header (14) are both semicircular and welded to the box body.

7. The visual access heat recovery heat exchanger for oilfield production facilities of claim 6, wherein: The top of the upper header (13) is provided with the water inlet (3) and the water outlet (4) arranged side by side, and the water inlet (3) and the water outlet (4) are respectively connected to the visible straight-through channel.

8. The visual access heat recovery heat exchanger for oilfield production facilities of claim 4, wherein: The front door cover (15) and the rear door cover (16) are both provided with a push-pull handle.

9. The visual access heat recovery heat exchanger for oilfield production facilities of claim 1, wherein: The heat exchange plate bundle is clamped by the clamping plates (7) on both sides through a screw rod and a nut, and the support (6) is tightly connected to the clamping plates (7) through a bolt.

10. The visual access heat recovery heat exchanger for oilfield production facilities of claim 3, wherein: Flow distribution partition plates are vertically arranged in the front header (11) and the rear header (12).

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