A safe and energy-saving heat exchanger for petroleum refining and chemical production

Abstract

This utility model relates to the field of heat exchanger technology and discloses a safe and energy-saving heat exchanger for petroleum refining and chemical production. It includes a shell, a heat carrier replenishment pipe on the front of the shell, a liquid inlet pipe on the side of the shell, and an internal heat exchange assembly inside the shell. The internal heat exchange assembly includes an anti-scaling component. The internal heat exchange assembly comprises an expansion tank, a circulation pipe, a circulation pump, hollow connectors, finned heat exchange tube bundles, an internal flow pipe, a lower connecting plate, a connecting strip, a rock wool insulation layer, a polyurethane foam insulation layer, and an inserted temperature sensor. This safe and energy-saving heat exchanger for petroleum refining and chemical production, by incorporating an internal heat exchange assembly with multiple sets of finned heat exchange tube bundles, utilizes a special finned tube design. The fins increase the heat exchange area and improve heat exchange efficiency. The device can also be equipped with a heat carrier circulation system to compensate for the volume expansion or contraction of the heat carrier due to temperature changes, ensuring stable system pressure.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a safe and energy-saving heat exchanger for petroleum refining and chemical production. Background Technology

[0002] As a crucial link in the energy industry chain, oil refining plays a fundamental supporting role in global economic development. It transforms crude oil into various products such as gasoline, diesel, kerosene, and lubricating oil through a series of complex processes, which are widely used in transportation, industrial production, and residential life. In the energy consumption structure of the entire oil refining enterprise, the energy consumed by the heat exchange process accounts for a considerable proportion, making heat exchangers an indispensable and important piece of equipment in oil refining production.

[0003] The prior art discloses a heat exchanger for petroleum refining production, with announcement number CN211823951U. This heat exchanger is equipped with a first temperature sensor, a first solenoid valve, a second temperature sensor, and a second solenoid valve. A heat medium exchanges heat with water entering the heat exchange chamber through an inlet pipe via an upper and lower pipe. During the heat exchange process, the first temperature sensor monitors the temperature of the heat medium outlet pipe, and the second temperature sensor monitors the temperature of the water outlet pipe. When the temperature of the water outlet pipe equals the temperature of the heat medium outlet pipe, the water in the heat exchange chamber has reached its maximum heat absorption limit. The second solenoid valve then opens to drain the water, allowing fresh water to re-enter for heat exchange. When the temperature of the heat medium outlet pipe meets the requirements for heat medium discharge, the first solenoid valve opens to discharge the heat medium. This device, utilizing the cooperation of the first and second temperature sensors, can maximize the heat absorption capacity of water, resulting in a high utilization rate.

[0004] The aforementioned safe and energy-saving heat exchanger for petroleum refining production exchanges heat with water entering the heat exchange chamber through the inlet pipe via the upstream and downstream pipes. During the heat exchange process, the first temperature sensor monitors the temperature of the heat medium outlet pipe. However, the heat exchanger does not have an internal heat carrier circulation system, which cannot compensate for the volume expansion or contraction of the heat carrier due to temperature changes, and cannot ensure stable system pressure. As a result, its performance during use is poor and needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide a safe and energy-saving heat exchanger for petroleum refining and chemical production, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a safe and energy-saving heat exchanger for petroleum refining and chemical production, including a shell, a heat carrier replenishment pipe provided on the front of the shell, a liquid inlet pipe provided on the side of the shell, an internal heat exchange assembly provided inside the shell, and an anti-scaling component provided inside the internal heat exchange assembly.

[0007] The internal heat exchange assembly includes an expansion tank, a circulation pipe, a circulation pump, a hollow connector, a heat exchange tube bundle with fins, an internal flow pipe, a lower connecting plate, a connecting strip, a rock wool insulation layer, a polyurethane foam insulation layer, and an inserted temperature sensor. The expansion tank is fixedly connected to the inner wall of the shell near the front, the circulation pump is fixedly connected to the back of the expansion tank, the hollow connector is fixedly connected to the back of the circulation pump, the internal flow pipe is fixedly connected to the side of the liquid inlet pipe, the heat exchange tube bundle with fins is fixedly connected to the surface of the internal flow pipe, and the circulation pipe is fixedly connected to the heat exchange tube bundle with fins. The surface of the finned tube is connected to the circulation pipe and the hollow connector. The lower connecting plate is fixedly connected to the bottom of the shell. A support ring plate is fixedly connected to the surface of the heat exchange tube bundle finned tube. The lower connecting plate is fixedly connected to the front of the support ring plate near the bottom. The connecting strip is fixedly connected to the front of the support ring plate. The connecting strip is fixedly connected to the top of the shell. The rock wool insulation layer is fixedly connected to the inner ring of the shell. The polyurethane foam insulation layer is fixedly connected to the inner ring of the rock wool insulation layer. The inserted temperature sensor is fixedly connected to the top of the shell.

[0008] Preferably, the anti-scaling component includes a spiral twisted belt, a placement seat, and an inner ring component. The inner ring component is fixedly connected to the inner ring of the inner flow pipe, the placement seat is fixedly connected to the inner ring of the inner ring component, and the spiral twisted belt is slidably connected to the inside of the placement seat.

[0009] Preferably, the interior of the placement seat has a groove, the thickness of which is adapted to the thickness of the spiral twisted belt.

[0010] Preferably, a thin liquid replenishment pipe is fixedly connected to the back of the heat carrier replenishment pipe and is connected to the front of the expansion tank. The thin liquid replenishment pipe is designed to replenish liquid and is compatible with the size of the internal expansion tank. The expansion tank is used to compensate for the volume expansion or contraction of the heat carrier due to temperature changes, ensuring stable system pressure.

[0011] Preferably, an inlet pipe is fixedly connected to the back of the circulating pump, and one end of the inlet pipe away from the back of the circulating pump is connected to the top of the hollow connector.

[0012] Preferably, the top of the housing has a through groove with a diameter equal to that of the temperature sensor. The bottom of the temperature sensor is connected to the top of the inner flow pipe. The temperature sensor monitors the temperature in real time to avoid temperature deviations affecting oil processing.

[0013] Preferably, the diameter and inner diameter of the internal flow pipe are equal to the diameter and inner diameter of the liquid inlet pipe.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0015] This safe and energy-saving heat exchanger for petroleum refining production is equipped with an internal heat exchange component. It has multiple sets of heat exchange tube bundles with fins inside. The tube bundles adopt a special fin design, which increases the heat exchange area and improves the heat exchange efficiency. The device can be equipped with a heat carrier circulation system, which can compensate for the volume expansion or contraction of the heat carrier due to temperature changes and ensure stable system pressure.

[0016] This safe and energy-saving heat exchanger for petroleum refining production is equipped with an anti-scaling component. The spiral twisted belt is inserted into the inside of the mounting base. When the petroleum refining medium flows through, the spiral twisted belt generates disturbance, preventing impurities in the medium from scaling on the tube wall. The spiral twisted belt can be removed and cleaned periodically to keep it clean. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the shell and internal heat exchange components of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 This is a three-dimensional structural diagram of the internal heat exchange component of this utility model;

[0022] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Shell; 2. Heat carrier replenishment pipe; 3. Liquid inlet pipe; 4. Internal heat exchange assembly; 401. Expansion tank; 402. Circulation pipe; 403. Circulation pump; 404. Hollow connector; 405. Heat exchange tube bundle finned tube; 406. Internal flow pipe; 407. Lower connecting plate; 408. Connecting strip; 409. Rock wool insulation layer; 410. Polyurethane foam insulation layer; 411. Inserted temperature sensor; 5. Anti-scaling assembly; 501. Spiral twisted belt; 502. Placement seat; 503. Inner ring component. Detailed Implementation

[0024] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-5 The present invention provides the following technical solution:

[0026] A safe and energy-saving heat exchanger for petroleum refining production includes a shell 1, a heat carrier replenishment pipe 2 on the front of the shell 1, a liquid inlet pipe 3 on the side of the shell 1, an internal heat exchange component 4 inside the shell 1, and an anti-scaling component 5 inside the internal heat exchange component 4.

[0027] The internal heat exchange assembly 4 includes an expansion tank 401, a circulation pipe 402, a circulation pump 403, a hollow connector 404, a heat exchange tube bundle with finned tubes 405, an internal flow pipe 406, a lower connecting plate 407, a connecting strip 408, a rock wool insulation layer 409, a polyurethane foam insulation layer 410, and an inserted temperature sensor 411. The expansion tank 401 is fixedly connected to the inner wall of the shell 1 near the front, the circulation pump 403 is fixedly connected to the back of the expansion tank 401, the hollow connector 404 is fixedly connected to the back of the circulation pump 403, and the internal flow pipe 406 is fixedly connected to the back of the shell 1. A heat exchange tube bundle finned tube 405 is fixedly connected to the side of the liquid inlet pipe 3 and to the surface of the inner flow pipe 406. A circulation pipe 402 is fixedly connected to the surface of the heat exchange tube bundle finned tube 405 and is connected to the hollow connector 404. A lower connecting piece 407 is fixedly connected to the bottom of the inner part of the shell 1. A support ring plate is fixedly connected to the surface of the heat exchange tube bundle finned tube 405. The lower connecting piece 407 is fixedly connected to the front of the support ring plate near the bottom. A connecting strip 408 is fixedly connected to the front of the support ring plate. A rock wool insulation layer 409 is fixedly connected to the inner top of the shell 1, and a polyurethane foam insulation layer 410 is fixedly connected to the inner ring of the rock wool insulation layer 409. A temperature sensor 411 is fixedly connected to the top of the shell 1. The diameter and inner diameter of the internal flow pipe 406 are equal to the diameter and inner diameter of the liquid inlet pipe 3. A thin liquid replenishment pipe is fixedly connected to the back of the heat carrier replenishment pipe 2. The thin liquid replenishment pipe is connected to the front of the expansion tank 401. The thin liquid replenishment pipe is designed to allow for liquid replenishment and is compatible with the size of the internal expansion tank 401. The expansion tank 401 is used to compensate for the volume expansion or contraction of the heat transfer fluid due to temperature changes, ensuring stable system pressure. The back of the circulation pump 403 is fixedly connected to the inlet pipe. The end of the inlet pipe away from the back of the circulation pump 403 is connected to the top of the hollow connector 404. The top of the housing 1 is provided with a through groove. The diameter of the through groove is equal to the diameter of the temperature sensor 411. The bottom of the temperature sensor 411 is connected to the top of the inner flow pipe 406. The temperature sensor 411 monitors the temperature in real time to avoid temperature deviation from affecting oil processing.

[0028] The anti-scaling component 5 includes a spiral twisted belt 501, a placement seat 502, and an inner ring 503. The inner ring 503 is fixedly connected to the inner ring of the inner flow pipe 406, and the placement seat 502 is fixedly connected to the inner ring of the inner ring 503. The spiral twisted belt 501 is slidably connected to the inside of the placement seat 502. A groove is provided inside the placement seat 502, and the thickness of the groove is adapted to the thickness of the spiral twisted belt 501.

[0029] In use, the oil to be processed is introduced into the inner wall of the shell 1 through the liquid inlet pipe 3, and then into the interior of the inner flow pipe 406. Heat exchange is then performed using the heat exchange components on the surface of the inner flow pipe 406. An internal heat carrier circulation system is installed, allowing the heat carrier to operate in an independent circulation loop. The heat conductor can be heat transfer oil. The heat carrier circulation system consists of a circulation pump 403, an expansion tank 401, and circulation pipes 402. The circulation pump 403 provides power for the flow of the heat carrier, and the expansion tank 401 compensates for the volume expansion or contraction of the heat carrier due to temperature changes, ensuring stable system pressure. In specific use, the speed of the circulation pump 403 is adjusted based on experience to change the flow rate of the heat carrier to achieve thermal balance and ensure that the oil refining medium reaches the required temperature. No temperature sensor feedback signal is required. Multiple sets of heat exchange tube bundles with finned tubes 405 are installed internally, and the tube bundles use special finned tubes. The design incorporates fins to increase the heat exchange area and improve heat exchange efficiency. An internal heat transfer fluid circulation system compensates for volume expansion or contraction caused by temperature changes, ensuring stable system pressure and good performance during operation. The inner ring features a rock wool insulation layer 409 and a polyurethane foam insulation layer 410 for heat preservation. These insulation materials effectively reduce heat loss and improve energy efficiency. Furthermore, an inserted temperature sensor 411 monitors the temperature in real time, preventing temperature deviations from affecting oil processing. The inner ring of the inner flow pipe 406 includes a spiral twisted belt 501, a placement seat 502, and an inner ring component 503. The spiral twisted belt 501 is inserted into the placement seat 502. When the oil refining medium flows through, the spiral twisted belt agitates, preventing impurities in the medium from scaling on the pipe wall. The spiral twisted belt 501 can be periodically removed for cleaning to maintain cleanliness.

Claims

1. A safe and energy-saving heat exchanger for petroleum refining and chemical production, comprising a shell (1), characterized in that: The front of the shell (1) is provided with a heat carrier replenishment pipe (2), the side of the shell (1) is provided with a liquid inlet pipe (3), the inside of the shell (1) is provided with an internal heat exchange assembly (4), and the inside of the internal heat exchange assembly (4) is provided with an anti-scaling assembly (5). The internal heat exchange assembly (4) includes an expansion tank (401), a circulation pipe (402), a circulation pump (403), a hollow connector (404), a heat exchange tube bundle finned tube (405), an internal flow pipe (406), a lower connecting plate (407), a connecting strip (408), a rock wool insulation layer (409), a polyurethane foam insulation layer (410), and an inserted temperature sensor (411). The expansion tank (401) is fixedly connected to the inner wall of the shell (1) near the front. The circulation pump (403) is fixedly connected to the back of the expansion tank (401). The hollow connector (404) is fixedly connected to the back of the circulation pump (403). The internal flow pipe (406) is fixedly connected to the side of the liquid inlet pipe (3). The heat exchange tube bundle finned tube (405) is fixedly connected to the surface of the internal flow pipe (406). The circulating pipe (402) is fixedly connected to the surface of the heat exchange tube bundle finned tube (405). The circulating pipe (402) is connected to the hollow connector (404). The lower connecting piece (407) is fixedly connected to the bottom of the inner part of the shell (1). The surface of the heat exchange tube bundle finned tube (405) is fixedly connected to the supporting ring plate. The lower connecting piece (407) is fixedly connected to the front of the supporting ring plate near the bottom. The connecting strip (408) is fixedly connected to the front of the supporting ring plate. The connecting strip (408) is fixedly connected to the top of the inner part of the shell (1). The rock wool insulation layer (409) is fixedly connected to the inner ring of the shell (1). The polyurethane foam insulation layer (410) is fixedly connected to the inner ring of the rock wool insulation layer (409). The inserted temperature sensor (411) is fixedly connected to the top of the shell (1).

2. The safe and energy-saving heat exchanger for petroleum refining production according to claim 1, characterized in that: The anti-scaling component (5) includes a spiral twisted belt (501), a placement seat (502), and an inner ring (503). The inner ring (503) is fixedly connected to the inner ring of the inner flow pipe (406), the placement seat (502) is fixedly connected to the inner ring of the inner ring (503), and the spiral twisted belt (501) is slidably connected to the inside of the placement seat (502).

3. The safe and energy-saving heat exchanger for petroleum refining production according to claim 2, characterized in that: The placement seat (502) has a groove inside, and the thickness of the groove is adapted to the thickness of the spiral twisted belt (501).

4. The safe and energy-saving heat exchanger for petroleum refining production according to claim 1, characterized in that: A thin liquid replenishment pipe is fixedly connected to the back of the heat carrier replenishment pipe (2), and the thin liquid replenishment pipe is connected to the front of the expansion tank (401).

5. The safe and energy-saving heat exchanger for petroleum refining production according to claim 1, characterized in that: The back of the circulating pump (403) is fixedly connected to an inlet pipe, and one end of the inlet pipe away from the back of the circulating pump (403) is connected to the top of the hollow connector (404).

6. A safe and energy-saving heat exchanger for petroleum refining and chemical production according to claim 1, characterized in that: The top of the housing (1) is provided with a through groove, the diameter of which is equal to the diameter of the temperature sensor (411) inserted into it. The bottom of the temperature sensor (411) inserted into it is connected to the top of the inner flow tube (406).

7. The safe and energy-saving heat exchanger for petroleum refining production according to claim 1, characterized in that: The diameter and inner diameter of the inflow pipe (406) are equal to the diameter and inner diameter of the liquid inflow pipe (3).

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