A plate heat exchanger assembly for a heating container

Abstract

The utility model provides a kind of plate heat exchanger assembly for heating container, it is related to the field of heating container.It includes base frame, base frame is located below the plate heat exchanger body, and plate heat exchanger body is supported and fixed, base frame bottom is provided with elastic support mechanism, elastic support mechanism is used to connect base frame and container bottom plate, one adjustable pipe connecting seat is connected with the primary side interface and the secondary side interface of plate heat exchanger body respectively, elastic support mechanism is provided with at least 3, and elastic support mechanism includes rubber shock pad, adjustable pipe connecting seat includes steering ball head, and is connected with the primary side interface or secondary side interface by steering ball head.The utility model integrates base frame, buffer, fixed and pipeline stress decoupling are integrated, improve the existing plate heat exchanger for heating container in transport and hoisting due to vibration impact and lead to equipment and connecting pipeline damage problem.

Description

Technical Field

[0001] This utility model relates to the field of heating container technology, and in particular to a plate heat exchanger assembly for heating containers. Background Technology

[0002] Plate heat exchangers have become one of the core components of heating systems due to their high heat exchange efficiency and compact structure. In recent years, with the rise of modular and mobile heating concepts, "heating containers," which integrate a complete set of heating equipment into a standard shipping container, have emerged. With their rapid deployment and flexible transportation, they have shown significant advantages in emergency heating, temporary building heating, and other fields.

[0003] However, this innovative application scenario poses a serious challenge to traditional equipment. When plate heat exchangers designed for fixed stations are directly applied to mobile containers, their inherent technical limitations become glaringly apparent.

[0004] First, there is the serious challenge of adapting to dynamic mechanical environments. Heating containers are subjected to continuous vibration and impact during road transport and relocation. Traditional rigid installation methods cannot effectively attenuate these dynamic loads, causing vibration energy to be directly transferred to the heat exchanger body and connected piping. This can easily lead to loosening of plate assembly clamping bolts, gasket failure and leakage, and even fatigue cracks at pipe welds or joints, creating potential safety hazards.

[0005] Secondly, there are installation and stress challenges arising from the extremely compact space inside the container. To ensure structural strength, the internal space of the container is extremely limited, the piping layout is fixed, and there is a lack of sufficient flexibility for compensation. This means that installation errors in the piping system and thermal expansion stress caused by temperature changes during operation cannot be absorbed by the bending deformation of the pipes themselves, as is the case in a spacious terminal building. These uncompensated additional stresses will eventually act on the interfaces of the heat exchanger body, which, over the long term, not only affects the reliability of the seals but also damages the structural lifespan of the equipment.

[0006] Finally, there is the issue of accessibility and convenience for maintenance operations. The confined space inside the container makes maintenance work exceptionally difficult. When it is necessary to replace gaskets or clean plates periodically, technicians often cannot use conventional tools to operate efficiently, and often have to disassemble and remove the entire heat exchanger. This process is cumbersome and time-consuming, greatly reducing the maintainability of the equipment, which contradicts the original intention of modular equipment to pursue efficient operation and maintenance.

[0007] Therefore, traditional plate heat exchangers in the existing technology cannot meet the stringent mobile and modular application requirements of heating containers in terms of structural fixing methods, pipeline stress relief, and ease of maintenance. Utility Model Content

[0008] The purpose of this utility model is to provide a plate heat exchanger assembly for heating containers. Through an integrated base frame, buffering, fixing and pipeline stress decoupling are integrated into one, thereby improving the problem of equipment and connecting pipeline damage caused by vibration and impact during transportation and hoisting of existing plate heat exchangers for heating containers.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A plate heat exchanger assembly for a heating container includes a base frame located below the plate heat exchanger body, which supports and secures the plate heat exchanger body. An elastic support mechanism is provided at the bottom of the base frame to connect the base frame to the container floor. An adjustable pipe connector is connected to both the primary and secondary interfaces of the plate heat exchanger body. The elastic support mechanism includes at least three components, each comprising a rubber shock-absorbing pad used to buffer the vibration and impact experienced by the plate heat exchanger body. The adjustable pipe connection seat includes a steering ball joint and is connected to the primary or secondary side interface via the steering ball joint. The adjustable pipe connection seat is used to compensate for pipe installation errors and absorb thermal stress.

[0010] The base frame of this invention is flexibly connected to the container floor via an elastic support mechanism at its bottom, effectively buffering multidimensional vibrations and impacts from the container floor. Adjustable pipe connection seats are connected to the primary and secondary interfaces of the plate heat exchanger body. These connection seats have internal steering ball joints that can deflect at multiple angles within the spherical cavity of the mounting base to compensate for pipe alignment errors. This invention integrates the base frame, elastic support mechanism, and adjustable pipe connection seats into a comprehensive solution specifically designed for addressing vibration, impact, and pipe stress issues in heating containers. It achieves unified equipment vibration reduction, pipe stress compensation, and rapid integration and installation, improving the reliability and safety of the plate heat exchanger during mobile transportation.

[0011] Furthermore, the elastic support mechanism also includes an upper connecting plate and a lower connecting plate. The upper connecting plate is used to connect the bottom of the base frame to the rubber shock-absorbing pad, and the lower connecting plate is used to connect the rubber shock-absorbing pad to the container floor. The lower connecting plate has an elongated hole for bolting the container floor.

[0012] This invention utilizes upper and lower connecting plates combined with a lower connecting plate featuring elongated holes to form a standardized shock-absorbing module with adjustable height and position. This ensures both the cushioning effect of the flexible connection and compensates for potential unevenness in the container floor, simplifying on-site installation and leveling processes.

[0013] Furthermore, the top of the base frame is provided with an arc-shaped bracket that matches the plate heat exchanger body, and the arc-shaped bracket is fixedly connected to the top of the base frame.

[0014] This utility model uses an arc-shaped bracket that matches the contour of the heat exchanger body as the main support structure, providing stable and reliable bottom support, dispersing the clamping force, avoiding local stress concentration at the bottom of the equipment, and enhancing overall stability.

[0015] Furthermore, the base frame is also provided with a clamping band, which includes a metal band with both ends being free ends. Each of the two free ends is provided with a connecting block. Fixed seats are symmetrically arranged on both sides of the base frame. Both the connecting blocks and the fixed seats are provided with through holes. The two connecting blocks are connected to the fixed seats through a screw assembly.

[0016] This invention abandons the traditional single-point fixing approach and adopts a hoop structure with both ends being free and symmetrically connected on both sides by a screw assembly, forming a closed-loop constraint with balanced force, large and uniform fastening force, and excellent vibration and impact resistance, thus solving the technical problem of easy loosening of single-point fixing.

[0017] Furthermore, the screw assembly includes a threaded rod passing through the connecting block and the fixed seat, with locking nuts at both ends of the threaded rod, and the two locking nuts are respectively located on the outside of the connecting block and the fixed seat.

[0018] The connection is achieved through a connecting block and locking nuts on both sides. The fixing transforms the tension of the band into a surface load on the pin shaft, resulting in high strength; the locking nuts on both sides form a double-nut structure to prevent loosening, further ensuring the reliability of the connection under vibration.

[0019] Furthermore, the adjustable pipe connector includes a mounting base, a steering ball joint, and a locking device, wherein the mounting base is connected to the primary side interface or the secondary side interface via a connecting flange.

[0020] This invention provides an independent and complete functional unit for compensating for pipeline errors and absorbing stress, and realizes a flexible connection between the pipeline and the heat exchanger interface.

[0021] Furthermore, the mounting base has a spherical cavity inside, the steering ball head is nested in the spherical cavity of the mounting base, a sealing ring is provided between the steering ball head and the spherical surface of the mounting base, and an external thread is provided at the outlet of the steering ball head for connecting to an external pipe.

[0022] This invention features a spherical cavity within the mounting base to accommodate the steering ball head, and a sealing ring is clearly defined. This achieves adjustable connection direction while ensuring reliable sealing at the moving joint through the sealing ring, thus solving the problem of balancing flexibility and sealing performance.

[0023] Furthermore, the locking device includes a locking member and a tapered pressure ring, the tapered pressure ring being sleeved outside the steering ball joint and located between the locking member and the steering ball joint, the locking member being used to define the position of the tapered pressure ring.

[0024] Furthermore, the inner hole of the locking member has an inner conical surface at its front end, the conical pressure ring has a C-shaped cross-section, the outer side of the conical pressure ring has a conical surface that matches the inner conical surface of the locking member, and the inner side of the conical pressure ring has a spherical surface that matches the spherical surface of the steering ball head.

[0025] This utility model uses a combination of a locking component and a conical pressure ring as a locking mechanism, forming a structure in which the inner conical surface of the locking component matches the outer conical surface and the inner spherical surface of the conical pressure ring. By utilizing the conical surface fit, the axial tightening force of the locking component is efficiently converted into a huge radial clamping force, thereby achieving uniform clamping of the ball head, with a large locking force and no damage to the ball head.

[0026] Furthermore, the mounting base is provided with external threads, and the locking member is provided with internal threads, and the locking member mates with the external threads of the mounting base.

[0027] The mounting base features an external thread that directly engages with the locking element, resulting in a compact structure and a direct and efficient force transmission path. Tightening or loosening can be achieved simply by rotating an external nut, making adjustment convenient and quick.

[0028] Compared with the prior art, the beneficial effects of the present invention are: 1. This utility model achieves a flexible connection between the equipment and the container floor through an elastic support mechanism at the bottom of the base frame, effectively isolating and buffering multidimensional vibrations and impacts during transportation. The three major functional modules—shock absorption, fixing, and pipe connection—are all integrated into a rigid base frame, resulting in a compact structure and enabling modular installation that is ready to use immediately. The standardized clamp and pipe connection seat design greatly facilitates rapid loading, unloading, maintenance, and replacement operations within the confined space of the container. Combined with the adjustable pressure clamps that tighten symmetrically on both sides of the top, a balanced closed-loop constraint is formed, providing vibration-resistant fastening force far exceeding that of traditional single-point fixing, ensuring the safety and stability of the equipment during movement and operation.

[0029] 2. The adjustable pipe connector of this utility model has an internal steering ball head that can deflect at multiple angles, effectively compensating for pipe installation alignment errors. The unique conical locking device can limit and dissipate the thermal and vibration stresses of the pipe within the connector, preventing them from being transmitted to the vulnerable heat exchanger interface. This fundamentally avoids the risk of interface leakage and damage, significantly improving the sealing reliability and service life of the system. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the adjustable pipe connector of this utility model; Figure 3 This is a top view of the conical pressure ring of this utility model; Reference numerals: 1-Metal strip, 2-Base frame, 3-Elastic support mechanism, 31-Upper connecting plate, 32-Rubber shock-absorbing pad, 33-Lower connecting plate, 331-Oblong hole, 4-Connecting block, 5-Primary side interface, 6-Secondary side interface, 7-Arc bracket, 8-Adjustable pipe connection seat, 81-Mounting seat, 82-Swivel ball head, 83-Locking device, 831-Locking element, 832-Conical pressure ring, 9-Pressure band, 10-Fixing seat, 11-Screw assembly, 111-Threaded rod, 112-Locking nut, 12-Connecting flange, 13-Sealing ring. Detailed Implementation

[0031] Example 1: As Figure 1-2 As shown, a plate heat exchanger assembly for a heating container includes a base frame 2 located below the plate heat exchanger body, supporting and fixing the plate heat exchanger body. An elastic support mechanism 3 is provided at the bottom of the base frame 2, connecting the base frame 2 to the container floor. An adjustable pipe connection seat 8 is connected to both the primary side interface 5 and the secondary side interface 6 of the plate heat exchanger body. The elastic support mechanism 3 is provided in at least three parts. The elastic support mechanism 3 includes a rubber shock-absorbing pad 32, which is used to buffer the vibration and impact on the plate heat exchanger body. The adjustable pipe connection seat 8 includes a steering ball head 82, which is connected to the primary side interface 5 or the secondary side interface 6. The adjustable pipe connection seat 8 is used to compensate for pipe installation errors and absorb thermal stress.

[0032] The plate heat exchanger body is supported and fixed above the base frame 2. The bottom of the base frame 2 is connected to the container floor via at least three elastic support mechanisms 3. The core of each elastic support mechanism 3 is a rubber shock-absorbing pad 32, used to provide flexible support and buffer vibration and impact. The primary side interface 5 and secondary side interface 6 of the plate heat exchanger body are each connected to an adjustable pipe connection seat 8. The core of this connection seat is a steering ball joint 82, which enables pipe connection, compensates for installation errors, and absorbs thermal stress. The primary side interface 5 of the plate heat exchanger body is used to connect to the heat source, and the secondary side interface 6 is used to connect to the user's pipeline.

[0033] In principle, multiple sets of elastic support mechanisms 3 can be set up to ensure that the base frame 2 can be stably supported and kept in balance. A minimum of 3 sets can be set up, but 4, 5, 6, etc. can also be set up, and they must be set up symmetrically.

[0034] When in use, when the container experiences vibrations and impacts during transportation, this energy is first transferred to the rubber damping pad 32. The rubber material has high damping characteristics and undergoes elastic deformation, converting the intense kinetic energy into heat energy and dissipating it.

[0035] During installation, loosening the locking device 83 allows the steering ball head 82 to freely deflect and rotate within a certain angle, easily aligning with external pipes that may have installation errors, achieving a stress-free initial connection. During system operation, the push and pull stresses generated by the thermal expansion and contraction of the pipes will push the locked ball head to produce a slight elastic yield, which will be absorbed and will not become a rigid force acting on the heat exchanger interface.

[0036] This invention achieves a unified solution for equipment vibration reduction, pipeline stress compensation, and rapid integrated installation, thereby improving the reliability and safety of the plate heat exchanger 1 under mobile transportation conditions.

[0037] Example 2: Based on Example 1, such as Figure 1 As shown, the elastic support mechanism 3 also includes an upper connecting plate 31 and a lower connecting plate 33. The upper connecting plate 31 is used to connect the bottom of the base frame 2 to the rubber shock-absorbing pad 32, and the lower connecting plate 33 is used to connect the rubber shock-absorbing pad 32 to the container floor. The lower connecting plate 33 has an elongated hole 331 for bolting the container floor.

[0038] During use, vibrations and impacts from the container floor are transmitted sequentially through the lower connecting plate 33, the rubber damping pad 32, and the upper connecting plate 31 before finally reaching the base frame 2. In this process, the rubber damping pad 32, as the core buffer element, can effectively absorb and dissipate energy, greatly reducing the dynamic load transmitted to the upper equipment.

[0039] The design of the elongated hole 331 on the lower connecting plate 33 allows the fixing bolts to move laterally within the range of the elongated hole. This provides valuable positional fine-tuning capability for the entire elastic support mechanism 3, compensating for prefabrication errors in the bolt hole positions on the container floor or installation tolerances in the base frame 2, ensuring the feasibility and convenience of installation.

[0040] Example 3: Based on Example 1, such as Figure 1 As shown, the top of the base frame 2 is provided with an arc-shaped bracket 7 that matches the plate heat exchanger body, and the arc-shaped bracket 7 is fixedly connected to the top of the base frame 2.

[0041] The top of the arc-shaped bracket 7 is rigidly connected to the base frame 2 by welding or bolts, forming a stable overall support structure. The plate heat exchanger body is directly placed and supported on the arc-shaped bracket 7. The curved surface design of the arc-shaped bracket 7 ensures that it fits closely and tightly with the cylindrical or elliptical curved surface of the heat exchanger shell, smoothly transferring the weight of the heat exchanger to the base frame 2 through the large-area arc-shaped contact surface, preventing the equipment from shaking.

[0042] Example 4: Based on Example 1, such as Figure 1 As shown, the base frame 2 is also provided with a clamping band 9, which includes a metal band 1. Both ends of the metal band 1 are free ends, and each of the two free ends is provided with a connecting block 4. Fixed seats 10 are symmetrically arranged on both sides of the base frame 2. Both the connecting block 4 and the fixed seat 10 are provided with through holes. The two connecting blocks 4 are connected to the fixed seat 10 through a screw assembly 11.

[0043] The screw assembly 11 includes a threaded rod 111 that passes through the connecting block 4 and the fixing seat 10. Locking nuts 112 are provided at both ends of the threaded rod 111, and the two locking nuts 112 are respectively provided on the outside of the connecting block 4 and the fixing seat 10.

[0044] A connecting block 4 is fixed to each of the two ends (free ends) of the metal strip 1. The connecting block 4 has a through hole machined into it. Fixing seats 10 are symmetrically arranged on both sides of the base frame 2. The fixing seats 10 also have through holes machined into them. A threaded rod 111 passes sequentially through the through holes in the connecting blocks 4 and the fixing seats 10. A locking nut 112 is screwed into each of the threaded rods 111 located on both sides of the connecting blocks 4 and the fixing seats 10.

[0045] In use, the plate heat exchanger is placed on the arc-shaped bracket 7 of the base frame 2, and then the metal strip 1 of the clamping band 9 is wrapped around the heat exchanger body. The threaded rod 111 is passed through the fixing seats 10 and connecting blocks 4 on both sides, and the nuts are initially screwed on to maintain the general shape of the structure. When the locking nuts 112 on the outside of the connecting blocks 4 on both sides are tightened simultaneously using a tool (such as a wrench), the nuts will squeeze the connecting blocks 4 inward. Since the fixing seats 10 are rigidly fixed to the base frame 2, they provide a reaction force. This squeezing force is transmitted through the connecting blocks 4 and converted into a tension force on the entire metal strip 1, causing the circumference of the metal strip 1 to begin to decrease. After the metal strip 1 is tightened, it evenly and powerfully hugs the inner plate heat exchanger shell, pressing it firmly onto the arc-shaped bracket 7 at the bottom, forming a stable bottom support and top pressure fixing pattern. The threaded pair can convert a small rotational torque into a huge axial tension, which in turn is converted into a strong circumferential clamping force of the metal strip 1. The symmetrical tightening on both sides ensures balanced force distribution and avoids equipment tilting caused by unilateral force. The nut is located on the outside of the connecting block 4. The tendency to loosen during vibration will make the nut and connecting block 4 press more tightly, which has good anti-loosening properties.

[0046] Example 5: Based on Example 1, such as Figure 1-3 As shown, the adjustable pipe connector 8 includes a mounting base 81, a steering ball joint 82, and a locking device 83. The mounting base 81 is connected to the primary side interface 5 or the secondary side interface 6 via a connecting flange 12. The mounting base 81 has a spherical cavity inside, and the steering ball joint 82 is nested within the spherical cavity of the mounting base 81. A sealing ring is provided between the steering ball joint 82 and the spherical surface of the mounting base 81. The outlet of the steering ball joint 82 is provided with an external thread for connecting to an external pipe.

[0047] The locking device 83 includes a locking member 831 and a conical pressure ring 832. The conical pressure ring 832 is sleeved on the outside of the steering ball joint 82 and is located between the locking member 831 and the steering ball joint 82. The locking member 831 is used to define the position of the conical pressure ring 832. The front end of the inner hole of the locking member 831 is provided with an inner conical surface. The cross-section of the conical pressure ring 832 is C-shaped. The outer side of the conical pressure ring 832 is provided with a conical surface that matches the inner conical surface of the locking member 831. The inner side of the conical pressure ring 832 is provided with a spherical surface that matches the spherical surface of the steering ball joint 82.

[0048] The mounting base 81 is provided with external threads, and the inner ring surface of the locking member 831 is provided with internal threads. The locking member 831 is threadedly engaged with the mounting base 81. The rear end of the inner hole of the locking member 831 is provided with internal threads. A stop structure is provided at the front end of the locking member 831 to restrict the tapered pressure ring 832 between the inner side of the locking member 831 and the steering ball head 82 after the threaded engagement is tightened.

[0049] Mounting base 81 serves as the basic component, achieving a rigid fixed connection with the primary or secondary interface 6 of the plate heat exchanger body via its end connecting flange 12. The steering ball joint 82, as the core moving component, has its spherical portion nested within the spherical cavity of the mounting base 81, forming a spherical kinematic pair. A sealing ring is provided between these spherical surfaces to achieve static sealing at the moving joint. The outlet end of the steering ball joint 82 is machined with external threads for connecting external pipes. The locking device 83, as the control mechanism, is fitted around the steering ball joint 82. The tapered pressure ring 832 is directly fitted onto the spherical neck of the steering ball joint 82 and is located between the locking nut 112 and the spherical surface of the steering ball joint 82. The locking element 831 achieves threaded engagement with the external threads machined on the outside of the mounting base 81 via its internal threads. The inner conical surface at the front end of the inner hole of the locking member 831 is adapted to the outer conical surface of the conical pressure ring 832; at the same time, the spherical surface on the inner side of the conical pressure ring 832 is adapted to the spherical surface of the steering ball head 82, thereby forming a complete force transmission chain.

[0050] The steering ball head 82 has a hollow structure inside, and the end of the ball head near the mounting base 81 is an open end, which allows the interior of the steering ball head 82 to communicate with the cavity of the mounting base 81, so as to realize the flow of medium (water).

[0051] In use, when the pipe angle needs to be adjusted, loosen the locking element 831. The locking element 831 retracts, releasing the axial pressure on the conical pressure ring 832. At this time, the steering ball head 82 is in a "floating" state within the spherical crown cavity of the mounting base 81, allowing for a deflection of ±15°. This function is specifically designed to compensate for alignment errors during pipe installation, achieving a stress-free initial connection. After pipe alignment is complete, tighten the locking element 831. The locking element 831 advances along the external thread of the mounting base 81, and its inner conical surface strongly axially compresses the outer conical surface of the conical pressure ring 832. Because the conical pressure ring 832 has a C-shaped opening structure, it is forced to undergo radial elastic contraction deformation under this axial compression. This deformation causes its inner spherical surface to uniformly and forcefully grip the steering ball head 82 from all sides, ultimately locking it completely. During this process, the sealing ring between the steering ball head 82 and the mounting base 81 is also further compressed, ensuring an absolute seal at the moving joint. This condition effectively resists pipe vibration and absorbs thermal stress.

Claims

1. A plate heat exchanger assembly for a heating container, characterized in that, The system includes a base frame (2), which is located below the plate heat exchanger body and supports and fixes the plate heat exchanger body. An elastic support mechanism (3) is provided at the bottom of the base frame (2), which is used to connect the base frame (2) and the container floor. An adjustable pipe connection seat (8) is connected to the primary side interface (5) and secondary side interface (6) of the plate heat exchanger body. Among them, at least three elastic support mechanisms (3) are provided. Each elastic support mechanism (3) includes a rubber shock-absorbing pad (32), which is used to buffer the vibration and impact on the plate heat exchanger body. The adjustable pipe connection seat (8) includes a steering ball head (82) and is connected to the primary side interface (5) or the secondary side interface (6) through the steering ball head (82) to compensate for pipe installation errors and absorb thermal stress.

2. The plate heat exchanger assembly for heating containers according to claim 1, characterized in that, The elastic support mechanism (3) further includes an upper connecting plate (31) and a lower connecting plate (33). The upper connecting plate (31) is used to connect the bottom of the base frame (2) to the rubber shock-absorbing pad (32). The lower connecting plate (33) is used to connect the rubber shock-absorbing pad (32) to the container floor. The lower connecting plate (33) has an elongated hole (331) for bolting the container floor.

3. The plate heat exchanger assembly for heating containers according to claim 1, characterized in that, The base frame (2) is provided with an arc-shaped bracket (7) that matches the plate heat exchanger body on the top, and the arc-shaped bracket (7) is fixedly connected to the top of the base frame (2).

4. The plate heat exchanger assembly for a heating container according to claim 1, characterized in that, The base frame (2) is also provided with a clamping band (9), which includes a metal band (1). Both ends of the metal band (1) are free ends, and each of the two free ends is provided with a connecting block (4). Fixed seats (10) are symmetrically arranged on both sides of the base frame (2). Both the connecting block (4) and the fixed seat (10) are provided with through holes. The two connecting blocks (4) are connected to the fixed seat (10) through a screw assembly (11).

5. The plate heat exchanger assembly for a heating container according to claim 4, characterized in that, The screw assembly (11) includes a threaded rod (111) passing through the connecting block (4) and the fixed seat (10), and locking nuts (112) are provided at both ends of the threaded rod (111), with the two locking nuts (112) respectively located on the outside of the connecting block (4) and the fixed seat (10).

6. The plate heat exchanger assembly for a heating container according to claim 1, characterized in that, The adjustable pipe connector (8) includes a mounting base (81), a steering ball head (82), and a locking device (83). The mounting base (81) is connected to the primary side interface (5) or the secondary side interface (6) via a connecting flange (12).

7. The plate heat exchanger assembly for a heating container according to claim 6, characterized in that, The mounting base (81) has a spherical cavity inside, and the steering ball head (82) is nested in the spherical cavity of the mounting base (81). A sealing ring is provided between the steering ball head (82) and the spherical surface of the mounting base (81). The outlet of the steering ball head (82) is provided with an external thread for connecting to an external pipe.

8. The plate heat exchanger assembly for a heating container according to claim 7, characterized in that, The locking device (83) includes a locking member (831) and a conical pressure ring (832). The conical pressure ring (832) is sleeved on the outside of the steering ball joint (82) and is located between the locking member (831) and the steering ball joint (82). The locking member (831) is used to limit the position of the conical pressure ring (832).

9. The plate heat exchanger assembly for a heating container according to claim 8, characterized in that, The locking member (831) has an inner conical surface at the front end of its inner hole. The conical pressure ring (832) has a C-shaped cross-section. The outer side of the conical pressure ring (832) has a conical surface that matches the inner conical surface of the locking member (831). The inner side of the conical pressure ring (832) has a spherical surface that matches the spherical surface of the steering ball head (82).

10. The plate heat exchanger assembly for a heating container according to claim 8, characterized in that, The mounting base (81) is provided with an external thread, and the locking member (831) is provided with an internal thread. The locking member (831) is engaged with the external thread of the mounting base (81).

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