Graphite stress release structure

Abstract

The graphite stress release structure is installed on a graphite heat exchanger, the graphite heat exchanger comprises a heat exchanger body, an inlet pipe extends outwards from the heat exchanger body, and the graphite stress release structure comprises a cover plate circumferentially installed at an outer port of the inlet pipe. A shell plate is circumferentially installed at the connecting end of the inlet pipe and the heat exchanger body, a connecting plate is circumferentially enclosed between the cover plate and the shell plate, a cooling space is formed in the shell plate, and cooling liquid is poured into the cooling space, so that the temperature of materials can be effectively reduced, and the service life of the materials is prolonged. Meanwhile, the heat transfer area is increased, and the heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, and in particular to a graphite stress release structure. Background Art

[0002] The common way to cool the head is to weld a cooling water pipe on the cylinder under the cover plate, so that the cooling water can soak the graphite head, which can also reduce the temperature of the graphite head and the material. The disadvantage of this method is that it can achieve some cooling effect but it is not very obvious. Changing the graphite material cannot fundamentally solve the problem. Summary of the invention

[0003] The object of the present invention is to provide a graphite stress release structure, which can effectively reduce the material temperature, release the stress and increase the heat transfer area to improve the heat exchange efficiency of the heat exchanger.

[0004] A graphite stress release structure provided in the present invention is installed on a graphite heat exchanger, wherein the graphite heat exchanger comprises a heat exchanger body, an inlet pipe is extended outward from the heat exchanger body, the graphite stress release structure comprises a cover plate circumferentially installed on the outer port of the inlet pipe, a shell plate is circumferentially installed at the connecting end of the inlet pipe and the heat exchanger body, a connecting plate is circumferentially enclosed between the cover plate and the shell plate, a cooling space is provided inside the shell plate, and a coolant is poured into the cooling space.

[0005] Furthermore, the shell plate is provided with a plurality of injection holes, and the injection holes have injection channels extending toward the cover plate, and outer ends of the injection channels are exposed outside the cover plate.

[0006] The formation of thermal stress is due to the different cooling speeds of various parts of the head, resulting in inconsistent contraction of various parts of the head in the same period. Without changing the original equipment structure, some injection holes are drilled on the graphite head to allow the coolant to be closer to the heat source, minimize the temperature difference of various parts of the head, and make the cooling and thermal stress removal effects more obvious. According to the heat transfer formula, the smaller the equivalent wall thickness, the better the heat exchange effect.

[0007] Furthermore, a perfusion cavity is installed on the cover plate, the perfusion cavity is communicated with the liquid injection channel, and a liquid inlet is provided on the perfusion cavity.

[0008] Furthermore, the liquid inlet is connected to a liquid inlet pipeline.

[0009] Furthermore, a liquid outlet is provided at the outer end of the shell plate, and a door that can be opened or closed is installed at the liquid outlet.

[0010] Furthermore, a vent is provided on the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a graphite stress release structure according to an embodiment of the present invention; Figure 2 This is a top view of the structure of the shell plate described in an embodiment of the present invention.

[0012] In the figure, 1-heat exchanger body; 2-inlet pipe; 3-cover plate; 4-shell plate; 5-connecting plate; 6-liquid injection hole; 7-liquid injection channel; 8-injection cavity. DETAILED DESCRIPTION

[0013] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0014] Combination Figure 1 and Figure 2 , shows a graphite stress release structure of the present invention, which is installed on a graphite heat exchanger. The graphite heat exchanger includes a heat exchanger body 1, and an inlet pipe 2 extends outward from the heat exchanger body 1. The graphite stress release structure includes a cover plate 3 circumferentially installed on the outer port of the inlet pipe 2, and a shell plate 4 is circumferentially installed at the connecting end of the inlet pipe 2 and the heat exchanger body 1. A connecting plate 5 is circumferentially enclosed between the cover plate 3 and the shell plate 4. A cooling space is provided inside the shell plate 4, and a coolant is poured into the cooling space.

[0015] In actual use, high-temperature gas enters from the inlet pipe and is cooled by the coolant in the cooling space.

[0016] The shell plate 4 is provided with a plurality of injection holes 6 , and the injection holes 6 are provided with injection channels 7 extending toward the cover plate 3 , and the outer ends of the injection channels 7 are exposed to the outside of the cover plate 3 .

[0017] A perfusion cavity 8 is installed on the cover plate 3 , the perfusion cavity 8 is communicated with the liquid injection channel 7 , and a liquid inlet is arranged on the perfusion cavity 8 .

[0018] The liquid inlet is connected with a liquid inlet pipeline.

[0019] The formation of thermal stress is due to the different cooling speeds of various parts of the head, resulting in inconsistent contraction of various parts of the head in the same period. Without changing the original equipment structure, some injection holes 6 are drilled on the graphite head to allow the coolant to be closer to the heat source, minimize the temperature difference of various parts of the head, and reduce the cooling and thermal stress removal effects. According to the heat transfer formula, the smaller the equivalent wall thickness, the better the heat exchange effect.

[0020] The heat transfer formula is as follows:

[0021] The outer end of the shell plate 4 is provided with a liquid outlet, and a door which can be opened or closed is installed at the liquid outlet.

[0022] The connecting plate 5 is provided with a vent.

[0023] The vent is used to discharge a portion of the non-condensable gas. Of course, the vent is also provided with a door that can be opened or closed.

[0024] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A graphite stress release structure, installed on a graphite heat exchanger, wherein the graphite heat exchanger comprises a heat exchanger body, characterized in that: An inlet pipe extends outward from the heat exchanger body, and the graphite stress release structure includes a cover plate circumferentially installed on the outer port of the inlet pipe. A shell plate is circumferentially installed at the connecting end of the inlet pipe and the heat exchanger body. A connecting plate is circumferentially enclosed between the cover plate and the shell plate. A cooling space is provided inside the shell plate, and a coolant is poured into the cooling space.

2. The graphite stress release structure according to claim 1, characterized in that: The shell plate is provided with a plurality of injection holes, and the injection holes have injection channels extending toward the cover plate, and the outer ends of the injection channels are exposed outside the cover plate.

3. The graphite stress release structure according to claim 2, characterized in that: A perfusion cavity is installed on the cover plate, the perfusion cavity is communicated with the liquid injection channel, and a liquid inlet is arranged on the perfusion cavity.

4. The graphite stress release structure according to claim 3, characterized in that: The liquid inlet is connected with a liquid inlet pipeline.

5. The graphite stress release structure according to claim 1, characterized in that: The outer end of the shell plate is provided with a liquid outlet, and a door which can be opened or closed is installed at the liquid outlet.

6. The graphite stress release structure according to claim 1, characterized in that: The connecting plate is provided with a vent.

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