Novel round block graphite heat exchange core body

Abstract

The utility model relates to a novel round block graphite heat exchange core body which comprises a buffer assembly and a plurality of graphite blocks, medium flow channels and cooling flow channels which are orthogonal are arranged in the graphite blocks, the medium flow channels and the cooling flow channels are not communicated with each other, the buffer assembly is installed on the end face of the graphite block on the upper layer, and the buffer assembly comprises an installation ring, a fixing base and a spring. The lower end of the mounting ring is movably clamped to the end face of the graphite block on the upper layer, the upper end of the mounting ring is parallel to the end face of the graphite block, the fixing bases are evenly installed at the upper end of the mounting ring at intervals, the fixing bases are sleeved with the springs in a one-to-one correspondence mode, and the upper sealing rubber ring and the lower sealing rubber ring are installed on the two sides of the upper end of the mounting ring respectively. And the lower sealing rubber ring is sleeved outside the spring and is propped against the end surface of the graphite block on the upper layer. The spring is matched with the upper sealing rubber ring and the lower sealing rubber ring, thermal expansion deformation of the graphite block is absorbed, and the graphite block is prevented from being excessively large in expansion coefficient, making hard contact with a sealing body and being squeezed and broken in the heat exchange process.

Description

TECHNICAL FIELD

[0001] The utility model relates to graphite heat exchanger technical field, especially a kind of novel round block graphite heat exchange core body. BACKGROUND

[0002] Graphite heat exchanger is the heat exchanger made of graphite for heat transfer assembly, the graphite for manufacturing heat exchanger should have impermeability, commonly used impregnation type impermeable graphite and profile impermeable graphite, graphite heat exchanger has good corrosion resistance, mainly used for the heat exchange of corrosive medium such as hydrochloric acid, sulfuric acid, acetic acid and phosphoric acid, and heat transfer surface is not easy to scale, and heat transfer performance is good, but graphite is easy to brittle crack, and low in bending and tensile strength, so it can only be used for low pressure. However, graphite heat exchange core body is mostly composed of several graphite blocks, graphite block will inevitably expand during heat exchange, the current upper and lower graphite blocks and the seal head of shell are directly sealed by rubber ring and then hard contact, without reserving expansion space for thermal expansion of graphite block, leading to cracking and damage of graphite block after long use, and high maintenance cost, so it needs to be improved. SUMMARY

[0003] Therefore, it is necessary to provide a novel round block graphite heat exchange core body aiming at the above problems.

[0004] A novel round block graphite heat exchange core body, comprising a buffer assembly and a plurality of graphite blocks, the graphite blocks are provided with orthogonal medium flow channels and cooling flow channels, the medium flow channels and the cooling flow channels are not communicated with each other, the plurality of graphite blocks are stacked, the medium flow channels provided in the adjacent graphite blocks along the axial direction are communicated with each other, the buffer assembly is installed on the end face of the upper graphite block, the buffer assembly comprises a mounting ring, a fixed seat, a spring, an upper sealing rubber ring and a lower sealing rubber ring, the cross section of the mounting ring is L-shaped, the lower end of the mounting ring is movably clamped on the end face of the upper graphite block, the upper end of the mounting ring is parallel to the end face of the graphite block, a plurality of fixed seats are uniformly and spacedly installed on the upper end of the mounting ring, the spring is correspondingly sleeved on the fixed seat, the upper sealing rubber ring and the lower sealing rubber ring are respectively installed on the two sides of the upper end of the mounting ring and are sleeved outside the spring, and the lower sealing rubber ring abuts against the end face of the upper graphite block.

[0005] Preferably, the upper sealing rubber ring and the lower sealing rubber ring are in the form of capsules.

[0006] Preferably, a sealing ring is arranged between the two adjacent graphite blocks.

[0007] Preferably, the port of the medium flow channel is in the form of a horn.

[0008] Preferably, the graphite block is subjected to impregnation treatment.

[0009] The utility model discloses the beneficial effect lies in: utilize spring cooperation upper sealing rubber ring and lower sealing rubber ring, absorb the thermal expansion deformation of graphite block, avoid the expansion coefficient of graphite block in the heat exchange process, and the hard contact of sealing body is extruded and broken, effectively improve the service life of graphite block, reduce maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a new type round block graphite heat exchange core body three -dimensional schematic diagram for one embodiment;

[0011] Figure 2 It is a new type round block graphite heat exchange core body plan view schematic diagram;

[0012] Figure 3 It is Figure 2 A-A direction section view schematic diagram. DETAILED DESCRIPTION

[0013] In order to make the above purpose, features and advantages of the utility model more apparent, easy to understand, below, combining the specific implementation of the utility model with the drawings makes detailed description.In the following description, a lot of specific details are set forth in order to fully understand the utility model.But the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, therefore the utility model is not limited by the following disclosed specific embodiments.

[0014] It should be noted that when an element is referred to as being "fixed to" or "set to" another element, it can be directly on another element or there can be a middle element.When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element.The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs.Any terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0016] As Figures 1 to 3As shown, a new round block graphite heat exchange core body, including buffer assembly 1 and a plurality of graphite blocks 2, the graphite block 2 is provided with orthogonal medium flow channel 21 and cooling flow channel 22, the medium flow channel 21 and cooling flow channel 22 are not communicated with each other, a plurality of graphite blocks 2 are stacked, the medium flow channel 21 provided in the graphite block 2 along the axial direction is communicated with each other, the buffer assembly 1 is installed on the end face of the upper graphite block 2, the buffer assembly 1 includes mounting ring 11, fixed seat 12, spring 13, upper sealing rubber ring 14 and lower sealing rubber ring 15, the cross section of the mounting ring 11 is L-shaped, the lower end of the mounting ring 11 is movably clamped on the end face of the upper graphite block 2, the upper end of the mounting ring 11 is parallel to the end face of the graphite block 2, a plurality of fixed seats 12 are uniformly spaced on the upper end of the mounting ring 11, the spring 13 is correspondingly sleeved on the fixed seat 12, the upper sealing rubber ring 14 and the lower sealing rubber ring 15 are respectively installed on both sides of the upper end of the mounting ring 11 and are sleeved outside the spring 13, the lower sealing rubber ring 15 abuts against the end face of the upper graphite block 2. Specifically, in the embodiment, the buffer assembly 1 is installed on the uppermost graphite block 2, used for abutting against the upper sealing body of the shell (not shown in the figure), interference fit, sealing, preventing medium leakage. The lowermost graphite block 2 and the lower sealing body of the shell can be directly interference fitted by the rubber ring, without the need to set the buffer assembly 1, avoiding that the spring 13 in the buffer assembly 1 is pressed flat due to the weight of the plurality of graphite blocks 2, and the elastic potential energy cannot be recovered. In order to avoid that the graphite block 2 is in thermal expansion after heat exchange, and hard contact with the sealing body of the shell, causing the upper graphite block to crack, we integrate a buffer assembly 1 on the upper end of the upper graphite block 2, including mounting ring 11, fixed seat 12, spring 13, upper sealing rubber ring 14 and lower sealing rubber ring 15, the mounting ring 11 is a metal piece, L-shaped, movably inserted into the ring groove of the upper graphite block 2, so that the mounting ring 11 can be displaced up and down, a plurality of fixed seats 12 are integrated on the upper end of the mounting ring 11, the fixed seat 12 is vertically installed, used for sleeving the spring 13, absorbing the thermal expansion deformation of the graphite block 2 by the spring 13 cooperating with the upper sealing rubber ring 14 and the lower sealing rubber ring 15, and tightly pressing the upper sealing rubber ring 14 and the lower sealing rubber ring 15 on the end face of the upper sealing head and the graphite block 2, preventing the medium from leaking out, at the same time, using the elastic potential energy and fatigue resistance characteristics of the spring 13 itself to adapt to the frequent thermal expansion of the graphite block 2, thereby avoiding that the graphite block 2 has too large expansion coefficient in the heat exchange process, hard contact with the sealing body, extrusion and breakage, effectively improving the service life of the graphite block 2 and reducing the maintenance cost.

[0017] As Figure 3 shown, the upper sealing rubber ring 14 and the lower sealing rubber ring 15 are in the form of a capsule, which is convenient for covering the spring 13, has good recovery characteristics, is not easy to fatigue and damage, and avoids the leakage of the medium.

[0018] Specifically, a sealing ring is arranged between two adjacent graphite blocks 2, and the medium flow channel 21 of the two adjacent graphite blocks 2 is sealed by the sealing ring to prevent the medium from penetrating out from between the two graphite blocks 2.

[0019] As shown in Figure 3 The port of the medium flow channel 21 is trumpet-shaped, so that the medium flows between the two graphite blocks 2, and the medium flows through the port of the medium flow channel 21, because the flow rate is suddenly changed, which can generate turbulence at the trumpet-shaped port, and reduce the flow rate of the medium.

[0020] Specifically, the graphite block 2 is subjected to impregnation treatment, which is used for filling the micropores of the graphite block 2 itself, reducing the proportion of pores, improving the structural strength of the graphite block 2, and enhancing the corrosion resistance of the graphite block 2 itself.

[0021] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A novel circular graphite heat exchange core, characterized in that: The device includes a buffer assembly and several graphite blocks. Each graphite block contains orthogonal media channels and cooling channels that are not interconnected. The graphite blocks are stacked, and the axial media channels within adjacent blocks are interconnected. The buffer assembly is mounted on the end face of the upper graphite block. The buffer assembly includes a mounting ring, a fixing seat, a spring, an upper sealing ring, and a lower sealing ring. The mounting ring has an L-shaped cross-section, and its lower end is movably engaged with the end face of the upper graphite block. The upper end of the mounting ring is parallel to the end face of the graphite block. Several fixing seats are evenly spaced on the upper end of the mounting ring. Springs are correspondingly fitted onto the fixing seats. The upper and lower sealing rings are respectively mounted on both sides of the upper end of the mounting ring and fitted over the springs. The lower sealing ring abuts against the end face of the upper graphite block.

2. The novel circular graphite heat exchange core as described in claim 1, characterized in that: The upper and lower sealing rings are bladder-shaped.

3. The novel circular graphite heat exchange core as described in claim 1, characterized in that: A sealing ring is provided between two adjacent graphite blocks.

4. The novel circular graphite heat exchange core as described in claim 1, characterized in that: The port of the medium flow channel is funnel-shaped.

5. The novel circular graphite heat exchange core as described in claim 1, characterized in that: The graphite block is impregnated.

Images