A pulse-proof interface for brazed plate heat exchanger

Abstract

The present invention discloses an anti-pulse interface for a brazed plate heat exchanger, and relates to the technical field of heat exchangers. The present invention includes a buffer tank, an inlet pipe, and an outlet pipe. Both ends of the buffer tank are provided with a head. The inlet pipe and the outlet pipe are respectively fixed on the heads at both ends of the buffer tank and are connected to the heads. The inlet pipe and the outlet pipe are symmetrical about the center of the buffer tank, and the inner wall point of the inlet pipe away from the axis of the buffer tank is flush with the inner wall of the buffer tank. The present invention ensures that the inner wall point of the inlet pipe close to the axis of the buffer tank is aligned with or lower than the inner wall point of the outlet pipe close to the axis of the buffer tank by designing an interface with a buffering function, so that a buffer zone is formed in the lower part of the buffer tank. The impact force of the fluid flowing into the inlet pipe will impact the head part at the bottom of the outlet pipe, weakening the impact force. At the same time, the occurrence of pulse conditions can be prevented during the continuous liquid supply process, avoiding the impact of frequent fluctuations in liquid pressure on the life, sealing and stability of the heat exchanger.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchangers, and in particular relates to an anti-pulse interface for a brazed plate heat exchanger. Background Art

[0002] In the brazed plate heat exchanger industry, there are often some harsh working conditions, such as frequent start-stop conditions. The pressure at the moment of startup will produce a pulse with large pressure fluctuations, forming a water hammer effect, which will seriously reduce the service life, sealing and stability of the heat exchanger.

[0003] Currently, there is no good solution to effectively solve the water hammer effect caused by frequent starts and stops. Even if grid-type baffles are installed to weaken the impact of the fluid, the amount of fluid supplied remains unchanged and the formation of pulses cannot be prevented.

[0004] Therefore, designing an interface that can prevent pulses is a problem that needs to be solved by workers in this field. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-pulsation interface for a brazed plate heat exchanger. By designing an interface with a buffering function, it is ensured that the inner wall point of the inlet pipe close to the axis of the buffer tank is aligned with or lower than the inner wall point of the outlet pipe close to the axis of the buffer tank, so that a buffer zone is formed in the lower part of the buffer tank. The impact force of the fluid flowing into the inlet pipe will impact the head part at the bottom of the outlet pipe, weakening the impact force. At the same time, the occurrence of pulses can be prevented during the continuous liquid supply process, avoiding the impact of frequent fluctuations in liquid pressure on the life, sealing and stability of the heat exchanger.

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is an anti-pulse interface for a brazed plate heat exchanger, comprising a buffer tank, an inlet pipe and an outlet pipe;

[0008] Both ends of the buffer tank are provided with heads;

[0009] The inlet pipe and the outlet pipe are respectively fixed to the heads at both ends of the buffer tank and are connected to the heads. The inlet pipe and the outlet pipe are symmetrical about the center of the buffer tank.

[0010] The inner wall point of the inlet pipe away from the axis of the buffer tank is flush with the inner wall of the buffer tank;

[0011] The inner wall point of the outlet pipe away from the axis of the buffer tank is flush with the inner wall of the buffer tank;

[0012] The inner wall point of the inlet pipe close to the axis of the buffer tank is flush with or spaced apart from the inner wall point of the outlet pipe close to the axis of the buffer tank.

[0013] Furthermore, the head is a hemispherical head, and the head is fixed to the end face of the buffer tank by welding.

[0014] Furthermore, the inner and outer diameters of the inlet pipe are consistent with the inner and outer diameters of the outlet pipe, and the wall thickness of the inlet pipe is consistent with the wall thickness of the outlet pipe.

[0015] Furthermore, the buffer tank is a cylindrical tank body, and the wall thickness of the buffer tank and the wall thickness of the head are consistent with the wall thickness of the inlet pipe.

[0016] Furthermore, the buffer tank is composed of two half tank bodies, each half tank body is a cylindrical tank body, and the two half tank bodies are concentrically fixed by welding.

[0017] Furthermore, the buffer tank is located outside the end plate of the heat exchanger, and the outlet pipe is fixed concentrically with the medium interface of the heat exchanger.

[0018] Furthermore, the inner diameter of the outlet pipe is consistent with the inner diameter of the medium interface of the heat exchanger, and the outlet pipe is fixed to the medium interface by welding or flange.

[0019] Furthermore, the plane formed by the axis lines of the inlet pipe and the outlet pipe is parallel to the side of the heat exchanger, and the inlet pipe is located below the outlet pipe.

[0020] The present invention has the following beneficial effects:

[0021] The present invention designs an interface with a buffering function to ensure that the inner wall point of the inlet pipe close to the axis of the buffer tank is aligned with or lower than the inner wall point of the outlet pipe close to the axis of the buffer tank, so that a buffer zone is formed in the lower part of the buffer tank. The impact force of the fluid flowing into the inlet pipe will impact the head part at the bottom of the outlet pipe, weakening the impact force. At the same time, during the continuous liquid supply process, the occurrence of pulse conditions can be prevented, the water hammer effect can be avoided, and the impact of frequent fluctuations in liquid pressure on the life, sealing and stability of the heat exchanger can be avoided. The structure is simple and easy to install, and the production cost and maintenance cost are low.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic structural diagram of an anti-pulse interface for a brazed plate heat exchanger according to the present invention;

[0025] Figure 2 It is a cross-sectional view of the structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the present invention after installation;

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1-buffer tank, 2-inlet pipe, 3-outlet pipe, 4-head, 101-half tank body. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] See also Figure 1-3 As shown, the present invention is an anti-pulse interface for a brazed plate heat exchanger, comprising a buffer tank 1, an inlet pipe 2 and an outlet pipe 3;

[0031] Both ends of the buffer tank 1 are provided with a head 4;

[0032] The inlet pipe 2 and the outlet pipe 3 are respectively fixed on the heads 4 at both ends of the buffer tank 1 and are connected to the heads 4. The inlet pipe 2 and the outlet pipe 3 are symmetrical about the center of the buffer tank 1;

[0033] The inner wall point of the inlet pipe 2 away from the axis of the buffer tank 1 is flush with the inner wall of the buffer tank 1;

[0034] The inner wall point of the outlet pipe 3 away from the axis of the buffer tank 1 is flush with the inner wall of the buffer tank 1;

[0035] The inner wall point of the inlet pipe 2 close to the axis of the buffer tank 1 is flush with or spaced apart from the inner wall point of the outlet pipe 3 close to the axis of the buffer tank 1 .

[0036] Among them Figure 1-3 As shown, the head 4 is a hemispherical head, and the head 4 is fixed to the end surface of the buffer tank 1 by welding.

[0037] Among them Figure 1-3 As shown, the inner and outer diameters of the inlet pipe 2 are consistent with those of the outlet pipe 3, the wall thickness of the inlet pipe 2 is consistent with that of the outlet pipe 3, and the specifications and materials are consistent, which is conducive to cutting.

[0038] Among them Figure 1-3As shown, the buffer tank 1 is a cylindrical tank body, and the wall thickness of the buffer tank 1 and the wall thickness of the head 4 are consistent with the wall thickness of the inlet pipe 2. The consistent wall thickness makes the outer wall points of the inlet pipe 2 and the outlet pipe 3 flush with the outer wall points of the buffer tank 1, which is beneficial to the design and operation of the tooling and is conducive to welding connection.

[0039] Among them Figure 1-3 As shown, the buffer tank 1 is composed of two half tank bodies 101, which are cylindrical tank bodies. The two half tank bodies 101 are concentrically fixed by welding. By dividing the buffer tank 1 into two, it is convenient to position and fix the head 4, and it is convenient to position, fix and grind and clean (finish) the inlet pipe 2 and the outlet pipe 3 with the head 4.

[0040] The buffer tank 1 is located outside the end plate of the heat exchanger, and the outlet pipe 3 is fixed concentrically with the medium interface of the heat exchanger.

[0041] The inner diameter of the outlet pipe 3 is consistent with the inner diameter of the medium interface of the heat exchanger. The outlet pipe 3 is fixed to the medium interface by welding or flange. If a flange / clamp connection is adopted, a seal is provided at the connection point to play a sealing role.

[0042] Among them Figure 3 As shown, the plane formed by the axis lines of the inlet pipe 2 and the outlet pipe 3 is parallel to the side of the heat exchanger, and the inlet pipe 2 is located below the outlet pipe 3. At this time, ensure that the inner wall point of the inlet pipe 2 close to the axis of the buffer tank 1 is aligned with or lower than the inner wall point of the outlet pipe 3 close to the axis of the buffer tank 1, so that a buffer zone is formed in the lower part of the buffer tank 1. The impact force of the fluid flowing into the inlet pipe 2 will impact the head 4 at the bottom of the outlet pipe 3, reducing the impact force. At the same time, during the continuous liquid supply process, the fluid in the upper part of the buffer tank 1 naturally flows into the outlet pipe 3 and flows out.

[0043] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-pulse interface for a brazed plate heat exchanger, characterized by: It comprises a buffer tank (1), an inlet pipe (2) and an outlet pipe (3); Both ends of the buffer tank (1) are provided with sealing heads (4); The inlet pipe (2) and the outlet pipe (3) are respectively fixed to the end caps (4) at both ends of the buffer tank (1) and are in communication with the end caps (4). The inlet pipe (2) and the outlet pipe (3) are symmetrical about the center of the buffer tank (1). The inner wall point of the inlet pipe (2) away from the axis of the buffer tank (1) is flush with the inner wall of the buffer tank (1); The inner wall point of the outlet pipe (3) away from the axis of the buffer tank (1) is flush with the inner wall of the buffer tank (1); The inner wall point of the inlet pipe (2) close to the axis of the buffer tank (1) is flush with or spaced apart from the inner wall point of the outlet pipe (3) close to the axis of the buffer tank (1).

2. The pulse-proof interface for a brazed plate heat exchanger according to claim 1, characterized in that: The sealing head (4) is a hemispherical sealing head, and the sealing head (4) is fixed to the end face of the buffer tank (1) by welding.

3. The pulse-proof interface for a brazed plate heat exchanger according to claim 1, characterized in that: The inner and outer diameters of the inlet pipe (2) are consistent with those of the outlet pipe (3), and the wall thickness of the inlet pipe (2) is consistent with that of the outlet pipe (3).

4. The pulse-proof interface for a brazed plate heat exchanger according to claim 3, characterized in that: The buffer tank (1) is a cylindrical tank body, and the wall thickness of the buffer tank (1) and the wall thickness of the head (4) are consistent with the wall thickness of the inlet pipe (2).

5. The pulse-proof interface for a brazed plate heat exchanger according to claim 4, characterized in that: The buffer tank (1) is composed of two half tank bodies (101), each of which is a cylindrical tank body. The two half tank bodies (101) are concentrically fixed by welding.

6. The pulse-proof interface for a brazed plate heat exchanger according to claim 1, characterized in that: The buffer tank (1) is located outside the end plate of the heat exchanger, and the outlet pipe (3) is fixed concentrically with the medium interface of the heat exchanger.

7. The pulse-proof interface for a brazed plate heat exchanger according to claim 6, characterized in that: The inner diameter of the outlet pipe (3) is consistent with the inner diameter of the medium interface of the heat exchanger, and the outlet pipe (3) is fixed to the medium interface by welding or flange.

8. The pulse-proof interface for a brazed plate heat exchanger according to claim 6, characterized in that: The plane formed by the axis lines of the inlet pipe (2) and the outlet pipe (3) is parallel to the side of the heat exchanger, and the inlet pipe (2) is located below the outlet pipe (3).

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