Metal pressure vessel with thermal insulation

Abstract

The utility model relates to petroleum chemical equipment technical field discloses a metal pressure vessel with heat -insulating structure, including metal jar, the metal jar outside cladding has the jacket, and the interlayer is formed between the jacket and metal jar, and the left support is installed to metal jar left side, and the right support is installed to metal jar right side, and the negative pressure subassembly is installed to right support top, and the internal assembly of metal jar has the stirring frame, is provided with stirring subassembly in stirring frame top, and the discharge component is provided with to metal jar bottom end. The utility model discloses through being provided with negative pressure subassembly, interlayer, jacket, lining, vacuum pump is used for the air in interlayer to draw out, to make interlayer be in negative pressure state, can realize negative pressure state in the interlayer formed between metal jar and jacket, to reduce the heat convection and heat conduction of heat through air medium, reduce heat loss, improve thermal efficiency and temperature control stability, satisfy the strict requirement of energy keeping and reaction isothermal in petroleum chemical raw material preparation.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical equipment technology, specifically to a metal pressure vessel with a heat insulation structure. Background Technology

[0002] In the process of processing crude oil and natural gas, various high-temperature and high-pressure equipment is often required, such as reaction vessels, storage tanks, and heat exchangers. These devices are usually made of metal materials and are used for chemical reactions or intermediate product processing, such as alkylation, hydrogenation, cracking, and synthesis. The internal reaction temperature of the equipment usually needs to be maintained to ensure that the raw materials can react fully or maintain a stable physical state.

[0003] To reduce energy loss, maintain internal temperature, and improve heating efficiency, these metal pressure vessels typically have an external jacket for introducing heat sources such as steam or heat transfer oil. Some also have added insulation layers or are covered with insulating materials. However, the space between the jacket and the metal vessel is usually an air layer or filled with ordinary insulation cotton, resulting in significant heat conduction and convection. This leads to rapid heat loss from the vessel, increased energy consumption, instability of reaction temperature, and even safety hazards. Therefore, there is an urgent need for a metal pressure vessel with an insulated structure to address these technical shortcomings. Utility Model Content

[0004] The purpose of this utility model is to provide a metal pressure vessel with a heat insulation structure to solve the problems mentioned in the background art, which are that the space between the jacket and the metal tank is mostly an air layer or filled with ordinary heat insulation cotton, resulting in rapid heat loss from the tank body, which can easily lead to increased energy consumption, affect the stability of the reaction temperature, and even bring safety hazards.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal pressure vessel with a heat insulation structure, comprising a metal tank, the metal tank being covered by a jacket, forming a sandwich between the jacket and the metal tank, a left support being installed on the left side of the metal tank, a right support being installed on the right side of the metal tank, a negative pressure component being installed above the right support, a stirring rack being assembled inside the metal tank, a stirring component being provided on the top of the stirring rack, and a discharge component being provided at the bottom of the metal tank.

[0006] As a further technical solution of this utility model, the negative pressure component includes a vacuum pump, which is fixed to the top of the right support. An air hole is opened in the upper right corner of the inner wall of the interlayer. An air extraction pipe is connected between the air hole and the vacuum pump. An electromagnetic valve is installed at the air extraction pipe. Three sets of stepped thermometers are installed on the right side of the interlayer. The stepped thermometers are distributed vertically at equal intervals in the upper, middle and lower layers of the interlayer.

[0007] As a further technical solution of this utility model, the upper part of the outer wall of the metal can is covered with a liner plate, the liner plate is made of microporous aluminum reflective film material, and its edge is attached to the horizontal plane where the jacket is located.

[0008] As a further technical solution of this utility model, the stirring assembly includes a geared motor, which is fixed to the top of the left bracket. The output shaft of the geared motor is fixedly connected downward to the outer magnetic rotor. An inner magnetic rotor is installed at the bottom of the outer magnetic rotor. The bottom of the inner magnetic rotor is fixedly connected to the stirring frame. An isolation sleeve is installed between the outer magnetic rotor and the inner magnetic rotor. A connecting flange is installed on the outside of the isolation sleeve. The isolation sleeve is fixed to the middle of the top of the metal tank through the connecting flange.

[0009] As a further technical solution of this utility model, the discharge assembly includes a discharge port, which is located in the middle of the bottom of the metal tank. A bearing seat is fixedly installed inside the discharge port. The bearing seat is rotatably connected to the stirring frame. A flow valve is fixedly connected to the bottom of the discharge port. A connector is fixedly connected to the bottom of the flow valve. A chute is fixedly connected to the bottom of the connector.

[0010] As a further technical solution of this utility model, a feed pipe is connected to the upper left of the metal tank, two sets of symmetrical feed ports are opened at the front end of the inner wall of the metal tank, and a controller is installed on the left side of the outer wall of the left support.

[0011] Compared with the prior art, the beneficial effects of this utility model are: by setting a negative pressure component, a jacket, a sleeve, and a liner, a negative pressure state can be achieved in the jacket formed between the metal tank and the sleeve, thereby reducing heat convection and heat conduction through the air medium, reducing heat loss, improving thermal efficiency and temperature control stability, and meeting the strict requirements for energy retention and reaction uniformity in the preparation of petrochemical raw materials.

[0012] By incorporating a permanent magnet drive stirring assembly, no through-shaft mechanical connection is required, thus avoiding wear and leakage problems of high-temperature seals. This structure is particularly suitable for reaction processes involving flammable, toxic, and volatile materials, ensuring thorough stirring, low energy consumption, and safe and reliable operation.

[0013] With the addition of a discharge component, a stable and controllable discharge and diversion process can be achieved, facilitating the discharge and collection of materials. This not only prevents leakage and blockage during discharge but also allows for easy switching between collection containers for different materials. It is suitable for continuous discharge and fine separation of products after petrochemical reactions. Attached Figure Description

[0014] Figure 1 This is a frontal cross-sectional view of the present invention.

[0015] Figure 2 This is a front view structural diagram of the stirring assembly of this utility model;

[0016] Figure 3 This is a front view cross-sectional structural diagram of the negative pressure component of this utility model;

[0017] Figure 4 This is a top view of the discharge port structure of this utility model.

[0018] In the diagram: 1. Left support; 2. Controller; 3. Stirring rack; 4. Feed inlet; 5. Liner; 6. Feed pipe; 7. Permanent magnet drive stirring assembly; 8. Negative pressure assembly; 9. Jacket; 10. Jacket sleeve; 11. Metal tank; 12. Right support; 13. Discharge assembly; 701. Connecting flange; 702. Gear speed change motor; 703. Outer magnetic rotor; 704. Isolation sleeve; 705. Inner magnetic rotor; 801. Vacuum pump; 802. Evacuation pipe; 803. Air vent; 804. Solenoid valve; 805. Step thermometer; 1301. Bearing seat; 1302. Flow valve; 1303. Connector; 1304. Chute; 1305. Discharge port. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 An embodiment of this utility model is provided: a metal pressure vessel with a heat insulation structure, including a metal tank 11, a jacket 10 covering the outside of the metal tank 11, forming a sandwich 9 between the jacket 10 and the metal tank 11, a left support 1 installed on the left side of the metal tank 11, a right support 12 installed on the right side of the metal tank 11, a negative pressure component 8 installed above the right support 12, a stirring rack 3 assembled inside the metal tank 11, a stirring component 7 provided on the top of the stirring rack 3, a discharge component 13 provided at the bottom of the metal tank 11, the negative pressure component 8 including a vacuum pump 801, the vacuum pump 801 fixed to the top of the right support 12, an air hole 803 opened in the upper right corner of the inner wall of the sandwich 9, and an air extraction pipe 802 connected between the air hole 803 and the vacuum pump 801;

[0021] Specifically, such as Figure 1 and Figure 3As shown, the metal can 11 is covered by a jacket 10, and a closed interlayer 9 is formed between the jacket 10 and the metal can 11. An air hole 803 is provided at the upper right corner of the interlayer 9. The air hole 803 is used to communicate with the air extraction pipe 802. The other end of the air extraction pipe 802 is connected to the vacuum pump 801 inside the negative pressure assembly 8. The vacuum pump 801 is fixedly installed at the top of the right bracket 12 and is used to extract the air in the interlayer 9, so that the interlayer 9 is in a negative pressure state.

[0022] The upper part of the outer wall of the metal can 11 is covered with a liner 5. The liner 5 is made of microporous aluminum reflective film material, and its edge is attached to the horizontal plane where the jacket 10 is located.

[0023] Furthermore, a liner 5 is attached to the upper part of the outer wall of the metal can 11. The liner 5 is made of microporous aluminum reflective film material and is attached to the horizontal position of the jacket 10 to reflect heat radiation, further reducing heat loss inside the jacket 9 and thus improving the overall heat insulation efficiency.

[0024] Three sets of stepped thermometers 805 are installed on the right side of the interlayer 9. The stepped thermometers 805 are vertically and equally spaced in the upper, middle and lower layers of the interlayer 9. A solenoid valve 804 is installed at the air extraction pipe 802.

[0025] Furthermore, during the vacuuming process, three sets of stepped thermometers 805 are vertically installed at equal intervals on the right side inside the interlayer 9. The stepped thermometers 805 are used to record the temperature changes of the interlayer 9 in the upper, middle and lower layers, which is convenient for judging the thermal insulation status inside the interlayer 9. A solenoid valve 804 is installed in the middle section of the vacuum pipe 802 to control the opening or closing of the negative pressure.

[0026] The stirring assembly 7 includes a geared motor 702, which is fixed to the top of the left bracket 1. The output shaft of the geared motor 702 is fixedly connected to the outer magnetic rotor 703 downwards. An inner magnetic rotor 705 is installed at the bottom of the outer magnetic rotor 703. The bottom of the inner magnetic rotor 705 is fixedly connected to the stirring frame 3. An isolation sleeve 704 is installed between the outer magnetic rotor 703 and the inner magnetic rotor 705. A connecting flange 701 is installed on the outside of the isolation sleeve 704. The isolation sleeve 704 is fixed to the middle of the top of the metal tank 11 through the connecting flange 701.

[0027] Specifically, such as Figure 1 and Figure 2As shown, the stirring assembly 7 is used to drive the stirring rack 3 to rotate inside the metal tank 11. The stirring assembly 7 includes a geared motor 702, which is fixedly installed on the top of the left bracket 1. The output shaft of the geared motor 702 is fixedly connected to an outer magnetic rotor 703. The outer magnetic rotor 703 is installed outside the metal tank 11 and fits against the outer side of the isolation sleeve 704 welded and fixed at the middle position of the top of the tank. The isolation sleeve 704 is made of hollow non-magnetic metal material, which serves to isolate the space inside and outside the tank. An inner magnetic rotor 705 is set inside the isolation sleeve 704. The inner magnetic rotor 705 is fixedly connected to the upper end of the stirring rack 3. When the geared motor 702 drives the outer magnetic rotor 703 to rotate, the magnetic field passes through the isolation sleeve 704 and drives the inner magnetic rotor 705 to rotate synchronously, thereby driving the stirring rack 3 to achieve internal stirring. Since the entire stirring drive process does not need to penetrate the metal tank 11 body, the wear and leakage problems of dynamic seals are avoided. In a high-temperature sealing environment, the structure is stable and reliable, and it is suitable for stirring reactions of hazardous media such as hydrocarbons and high flash point solvents.

[0028] The discharge assembly 13 includes a discharge port 1305, which is located at the middle of the bottom of the metal tank 11. A bearing seat 1301 is fixedly installed inside the discharge port 1305. The bearing seat 1301 is rotatably connected to the stirring frame 3. A flow valve 1302 is fixedly connected to the bottom of the discharge port 1305.

[0029] Specifically, such as Figure 1 and Figure 4 As shown, a set of discharge ports 1305 are provided at the middle of the bottom of the metal tank 11 for discharging materials. A set of bearing seats 1301 are fixedly installed inside the discharge port 1305. The bearing seats 1301 are rotatably connected to the bottom of the stirring frame 3, which plays the role of stabilizing the stirring shaft and supporting the structure. A set of flow valves 1302 are fixedly connected to the bottom of the discharge port 1305. The flow valves 1302 are used to adjust the discharge speed and discharge flow rate to ensure that the materials can be discharged stably.

[0030] A connector 1303 is fixedly connected to the bottom of the flow valve 1302, and a chute 1304 is fixedly connected to the bottom of the connector 1303. A feed pipe 6 is connected to the upper left of the metal tank 11. Two sets of symmetrical feed ports 4 are opened at the front end of the inner wall of the metal tank 11. A controller 2 is installed on the left side of the outer wall of the left support 1.

[0031] Furthermore, the bottom of the discharge port 1305 is connected to the chute 1304 via the connector 1303. The chute 1304 is used to guide the discharged material to the receiving container below to prevent dripping and splashing, ensuring a clean and stable discharge process. The discharge direction and speed can be flexibly controlled according to actual needs, making it suitable for material transfer and processing during the reaction process.

[0032] Working Principle: This device is suitable for the mixing and heat treatment of raw materials such as catalytic cracking, alkylation, and hydrogenation modification. Before use, the raw materials are introduced from the upper left of the metal tank 11 through the feed pipe 6, and flow into the reaction chamber through two sets of feed inlets symmetrically arranged at the front end of the inner wall of the tank. The controller 2 is installed on the left side of the outer wall of the left support 1 to control the start-up sequence and stirring speed of the system. After the start-up, the stirring assembly 7 drives the stirring rack 3 to mix the materials. In the stirring assembly 7, the gear speed change motor 702 is fixed to the top of the left support 1, and its output shaft is driven by the external magnetic rotor 703. The inner magnetic rotor 705 inside the sleeve 704 rotates synchronously, thereby driving the stirring frame 3 to achieve efficient stirring inside the vessel. This magnetic coupling structure eliminates the need for any mechanical shaft penetrating the metal tank 11 body, avoiding leakage problems under high temperature and pressure in traditional sealing structures. It is suitable for stirring reactions of hazardous media such as hydrocarbons and high flash point solvents. During the reaction, to prevent excessive heat loss, the metal tank 11 is covered with a jacket 10, forming a closed interlayer 9 between the jacket 10 and the metal tank 11. To improve heat insulation performance, the device forms a simple vacuum layer by setting a negative pressure component 8. The negative pressure component 8 encloses... The system includes a vacuum pump 801, which is connected to an air vent 803 at the upper right corner of the interlayer 9 via an air extraction pipe 802 and is controlled to open / close by a solenoid valve 804. Before operation, the vacuum pump 801 extracts air from the interlayer 9 to create a slight negative pressure, thereby suppressing heat convection and heat conduction in the interlayer 9. Three sets of stepped thermometers 805 are vertically and equally spaced inside the interlayer 9 to detect the temperature gradient changes of the upper, middle, and lower layers, respectively, to determine whether the thermal insulation state is stable. A ring of microporous aluminum reflective film liner 5 is also attached to the upper part of the outer wall of the metal can 11 to reflect infrared radiation. Thermal radiation further enhances the heat retention capacity of the tank. After the reaction is completed, the material is discharged through the discharge assembly 13. The bottom of the metal tank 11 has a discharge port 1305 in the middle. The bearing seat 1301 inside is rotatably connected to the lower end of the stirring frame 3 to provide support. A flow valve 1302 is installed at the bottom of the discharge port 1305 to adjust the discharge speed and flow rate. The connector 1303 and the chute 1304 are connected in sequence below it. The material is introduced into the receiving container through the chute 1304. The whole process is stable and smooth, and it is not easy to block or splash. The whole system has a compact structure and reliable sealing.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A metal pressure vessel with a heat-insulating structure, comprising a metal tank (11), characterized in that: The metal tank (11) is covered by a jacket (10), and a sandwich layer (9) is formed between the jacket (10) and the metal tank (11). A left bracket (1) is installed on the left side of the metal tank (11), and a right bracket (12) is installed on the right side of the metal tank (11). A negative pressure component (8) is installed above the right bracket (12). A stirring rack (3) is installed inside the metal tank (11), and a stirring component (7) is provided on the top of the stirring rack (3). A discharge component (13) is provided at the bottom of the metal tank (11).

2. A metal pressure vessel with a heat insulation structure according to claim 1, characterized in that: The negative pressure component (8) includes a vacuum pump (801), which is fixed to the top of the right bracket (12). An air hole (803) is opened in the upper right corner of the inner wall of the interlayer (9). An air extraction pipe (802) is connected between the air hole (803) and the vacuum pump (801). A solenoid valve (804) is installed at the air extraction pipe (802). Three sets of stepped thermometers (805) are installed on the right side of the interlayer (9). The stepped thermometers (805) are distributed vertically at equal intervals in the upper, middle and lower layers of the interlayer (9).

3. A metal pressure vessel with a heat insulation structure according to claim 1, characterized in that: The upper part of the outer wall of the metal can (11) is covered with a liner (5), which is made of microporous aluminum reflective film material and its edge is attached to the horizontal plane of the jacket (10).

4. A metal pressure vessel with a heat insulation structure according to claim 1, characterized in that: The stirring assembly (7) includes a geared motor (702), which is fixed to the top of the left bracket (1). The output shaft of the geared motor (702) is fixedly connected downward to the outer magnetic rotor (703). An inner magnetic rotor (705) is installed at the bottom of the outer magnetic rotor (703). The bottom of the inner magnetic rotor (705) is fixedly connected to the stirring frame (3). An isolation sleeve (704) is installed between the outer magnetic rotor (703) and the inner magnetic rotor (705). A connecting flange (701) is installed on the outside of the isolation sleeve (704). The isolation sleeve (704) is fixed to the middle of the top of the metal tank (11) through the connecting flange (701).

5. A metal pressure vessel with a heat insulation structure according to claim 1, characterized in that: The discharge assembly (13) includes a discharge port (1305), which is located at the middle of the bottom of the metal tank (11). A bearing seat (1301) is fixedly installed inside the discharge port (1305). The bearing seat (1301) is rotatably connected to the stirring frame (3). A flow valve (1302) is fixedly connected to the bottom of the discharge port (1305). A connector (1303) is fixedly connected to the bottom of the flow valve (1302). A chute (1304) is fixedly connected to the bottom of the connector (1303).

6. A metal pressure vessel with a heat insulation structure according to claim 1, characterized in that: The metal can (11) is connected to the upper left of the feed pipe (6), and two sets of symmetrical feed ports (4) are opened at the front end of the inner wall of the metal can (11). A controller (2) is installed on the left side of the outer wall of the left support (1).

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