Low temperature nitrogen header

Abstract

The utility model provides a low temperature nitrogen gas collecting pipe, including a plurality of shunt and collecting pipe, a plurality of shunt and collecting pipe top are linked, a plurality of shunt outside is square tube, and the inside flow channel section is circular, be equipped with the heat preservation mechanism in the connecting place of shunt and collecting pipe, the heat preservation mechanism includes cover, middle ring and bottom ring. The utility model discloses a kind of low temperature nitrogen gas collecting pipe, the utility model discloses a kind of low temperature nitrogen gas collecting pipe, cover, middle ring and bottom ring are set in the connecting place of shunt and collecting pipe, and cover, middle ring and bottom ring three combinations are carried out to the complete cladding of the connecting place of shunt and collecting pipe, make this position and outside completely isolated, played good heat preservation effect, reduced the loss and change of the temperature of fluid flowing therein, and further play the effect of green environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of manifold technology, specifically a low-temperature nitrogen manifold. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, and are widely used.

[0003] Our company uses nitrogen gas at a low temperature of around -100 degrees Celsius as a refrigerant, which enters the heat exchange mechanism through a manifold. Existing manifolds often only focus on collecting and resisting the impact of collecting, and their heat preservation capacity is insufficient, especially at the connection between the manifold and the branch pipe, where the area is larger and heat is more easily lost. Nitrogen gas as a refrigerant has a much smaller impact on the manifold than liquid as a refrigerant, so existing manifolds are not suitable.

[0004] This case arose in order to resolve the aforementioned issues. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a low-temperature nitrogen manifold to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a low-temperature nitrogen gas manifold, comprising a plurality of branch pipes and a manifold, wherein the plurality of branch pipes are connected to the top of the manifold, the plurality of branch pipes are square tubes on the outside and circular cross-section of the internal flow channel, and a heat preservation mechanism is provided at the connection between the branch pipes and the manifold, wherein the heat preservation mechanism comprises a cover, a middle ring and a bottom ring.

[0009] Preferably, the bottom surface of the cover has the same number of slots as the number of diverter pipes, the cover is fitted onto the top of the collector pipe, and the diverter pipe is slidably connected to the slots.

[0010] Preferably, the bottom ring is located at the lower end of the outer side of the cover, the inner side of the bottom ring is provided with heat-insulating sponge, the heat-insulating sponge abuts against the lower side of the diverter tube, the inner side of the bottom ring contacts the outer side of the cover, and the upper end face of the bottom ring contacts the lower side of the diverter tube.

[0011] Preferably, the middle ring is sleeved on the outside of the cover, the middle ring is set on the upper end of the bottom ring, and the lower end face of the middle ring has a number of notches the same as the number of diversion pipes. When the middle ring is sleeved on the outside of the cover, the notches are engaged with the diversion pipes.

[0012] Preferably, the cover, middle ring, and bottom ring are all made of thermal insulation material.

[0013] (III) Beneficial Effects

[0014] After adopting the above technical solution, this utility model has the following advantages compared with the prior art: The low temperature nitrogen manifold of this utility model is provided with a cover, a middle ring and a bottom ring at the connection between the manifold and the distribution pipe. The combination of the cover, the middle ring and the bottom ring completely covers the connection between the manifold and the distribution pipe, so that the position is completely isolated from the outside world, which plays a good role in heat preservation, reduces the temperature loss and change of the fluid flowing in it, and thus plays a green and environmentally friendly role. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram showing the disassembly of the cap and the middle ring;

[0017] Figure 3 This is a diagram illustrating the complete split.

[0018] In the diagram: 1. Diverter pipe, 2. Collector pipe, 3. Cover, 31. Groove, 4. Middle ring, 41. Notch, 5. Bottom ring, 51. Insulation sponge. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] This utility model embodiment provides a low-temperature nitrogen manifold, such as Figure 1-3 As shown, it includes several branch pipes 1 and several collector pipes 2. The branch pipes 1 are connected to the top of the collector pipes 2. The outer surface of the branch pipes 1 is square, and the inner flow channel cross-section is circular. Compared with the circular outer pipe, the square outer pipe can fit more closely with the external insulation mechanism, thereby achieving a better insulation effect. An insulation mechanism is provided at the connection between the branch pipes 1 and the collector pipes 2. The insulation mechanism includes a cover 3, a middle ring 4, and a bottom ring 5. It should be noted that the cover 3, the middle ring 4, and the bottom ring 5 are all made of insulation material.

[0021] Reference Appendix Figure 1-3The bottom surface of the cover 3 has the same number of slots 31 as the diverter pipe 1. The cover 3 is fitted onto the top of the collector pipe 2. The diverter pipe 1 is slidably connected to the slots 31. The upper side and left and right sides of the diverter pipe 1 are in contact with the cover 3. The cover 3 completes the covering of the upper side and left and right sides of the diverter pipe 1.

[0022] Reference Appendix Figure 1-3 The bottom ring 5 is located at the lower end of the outer side of the cover 3. The inner side of the bottom ring 5 is provided with heat-insulating sponge 51, which abuts against the lower side of the diversion pipe 1. The inner side of the bottom ring 5 contacts the outer side of the cover 3, and the upper end of the bottom ring 5 contacts the lower side of the diversion pipe 1. The bottom ring 5 completes the covering of the lower side of the diversion pipe 1.

[0023] Reference Appendix Figure 1-3 The middle ring 4 is fitted onto the outside of the cover 3 and is located on the upper end of the bottom ring 5. The lower end face of the middle ring 4 has several notches 41, the same number as those of the diversion pipe 1. When the middle ring 4 is fitted onto the outside of the cover 3, the notches 41 engage with the diversion pipe 1. The middle ring 4 further provides insulation coverage to a slightly farther area of ​​the diversion pipe 1, further improving the insulation effect.

[0024] This utility model discloses a low-temperature nitrogen manifold, which is provided with a cover, a middle ring and a bottom ring at the connection between the manifold and the distribution pipe. The combination of the cover, the middle ring and the bottom ring completely covers the connection between the manifold and the distribution pipe, completely isolating this position from the outside world, which plays a good role in heat preservation, reduces the temperature loss and change of the fluid flowing in it, and thus plays a green and environmentally friendly role.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cryogenic nitrogen manifold, comprising a plurality of branch pipes (1) and a manifold (2), characterized in that: The plurality of diversion pipes (1) are connected to the top of the collection pipe (2). The plurality of diversion pipes (1) are square tubes on the outside and circular cross-section of the internal flow channel. A heat preservation mechanism is provided at the connection between the diversion pipe (1) and the collection pipe (2). The heat preservation mechanism includes a cover (3), a middle ring (4) and a bottom ring (5).

2. The cryogenic nitrogen manifold according to claim 1, characterized in that: The bottom surface of the cover (3) has the same number of slots (31) as the diversion pipe (1). The cover (3) is fitted onto the top of the collection pipe (2). The diversion pipe (1) is slidably connected to the slots (31).

3. A cryogenic nitrogen manifold according to claim 2, characterized in that: The bottom ring (5) is located at the lower end of the outer side of the cover (3). The inner side of the bottom ring (5) is provided with heat-insulating sponge (51). The heat-insulating sponge (51) abuts against the lower side of the diversion pipe (1). The inner side of the bottom ring (5) contacts the outer side of the cover (3). The upper end face of the bottom ring (5) contacts the lower side of the diversion pipe (1).

4. A cryogenic nitrogen manifold according to claim 3, characterized in that: The middle ring (4) is fitted on the outside of the cover (3). The middle ring (4) is set on the upper end of the bottom ring (5). The lower end face of the middle ring (4) has several notches (41) of the same number as the diversion pipe (1). When the middle ring (4) is fitted on the outside of the cover (3), the notches (41) are engaged with the diversion pipe (1).

5. A cryogenic nitrogen manifold according to claim 1, characterized in that: The cover (3), middle ring (4) and bottom ring (5) are all made of thermal insulation material.

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