Debugging and plugging mechanism for low-temperature joint

Abstract

The debugging and plugging mechanism comprises a low-temperature equipment connector, a plugging part is arranged at an end opening of the low-temperature equipment connector, a bolt is fixed to the lower end of the plugging part, a round bar is arranged below the plugging part, an inner threaded hole is formed in the upper portion of the round bar in a machined mode, and a threaded hole is formed in the lower portion of the round bar. Compared with the prior art, the low-temperature equipment connector has the advantages that cold energy of low-temperature equipment can be prevented from leaking out of the plugging position of the connector to cause endless loss of the cold energy, and the low-temperature connector and the plugging position of the low-temperature equipment can be prevented from being dewed and frosted.

Description

Technical Field

[0001] The utility model relates to the technical field of low-temperature equipment plugging, in particular to a debugging and plugging mechanism for a low-temperature joint. Background Art

[0002] In ultra-low temperature equipment and projects, cryogenic joints are commonly used to transmit cryogenic liquefied gases, such as liquid helium, liquid nitrogen and liquid hydrogen. They can seal and reduce the loss of cold energy in joints and transmission pipelines. This seal can normally only be used for transportation or pressure testing of cryogenic equipment pipelines to seal the cryogenic joints to maintain a slight positive pressure or test pressure in the equipment. Many cryogenic equipment require equipment debugging before the cryogenic pipeline is connected to the male head, and the cryogenic joint also needs to be sealed. With existing seals, the cold energy of the cryogenic equipment will leak out from the seal of the joint, causing an unnecessary loss of cold energy, and condensation and frost will form on the cryogenic joint and its seal. When the condensation and frost melt, a large amount of water will drip into the cryogenic equipment and the room. Utility Model Content

[0003] The purpose of the utility model is to provide a debugging and plugging mechanism for a low-temperature joint, which can solve at least one of the above technical problems. The technical solution of the utility model is as follows:

[0004] A debugging and sealing mechanism for a cryogenic joint comprises: a cryogenic equipment joint, a sealing portion is provided at the port of the cryogenic equipment joint, a bolt is fixed at the lower end of the sealing portion, a round rod is provided below the sealing portion, an internal threaded hole is formed above the round rod, the bolt and the internal threaded hole are threadedly matched, and a sealing connection portion is provided at the port of the cryogenic equipment joint.

[0005] Furthermore, the plugging portion comprises a plugging head arranged at the joint port of the cryogenic equipment, a plurality of slots are arranged at intervals on the plugging head, and a sealing sleeve is provided with a sealing O-ring on each of the slots.

[0006] Furthermore, the sealing connection portion includes a card slot arranged at the interface end of the low-temperature equipment joint, a female head component is installed at the interface end of the low-temperature equipment joint through the card slot, a locking nut is wrapped above the sealing head, and the locking nut is threadedly arranged above the female head component.

[0007] Preferably, a boss is provided above the plugging head.

[0008] Preferably, a stepped through groove is provided above the locking nut.

[0009] Preferably, the round rod is made of G10 steel.

[0010] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0011] The utility model provides a debugging and plugging mechanism for a low-temperature joint, wherein a user engages a plugging portion with an internal threaded hole on a round rod through a bolt thread, so that the plugging portion and the round rod are installed and matched with each other. During debugging, the user seals and inserts the plugging portion and the round rod into a low-temperature device joint. At this time, the user completely seals the low-temperature device joint and the plugging portion with each other through a sealing connection portion. Compared with the prior art, this can prevent the cold energy of the low-temperature device from leaking from the joint sealing portion, causing an unnecessary loss of cold energy, and prevent the low-temperature joint and its sealing portion from condensing dew and frost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a plan view of the utility model.

[0013] Figure 2 For this utility model Figure 1 An enlarged schematic diagram of A-1.

[0014] Explanation of the reference numerals: 1. Cryogenic equipment connector; 3. Sealing part; 4. Bolt; 5. Round rod; 6. Internal threaded hole; 7. Sealing connection part; 31. Sealing head; 32. Slot; 33. Sealing O-ring; 71. Slot; 72. Female head assembly; 73. Locking nut; 311. Boss; 731. Step groove. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0016] like Figures 1 to 2 A debugging and sealing mechanism for a cryogenic joint is shown, characterized in that it includes: a cryogenic equipment joint 1, a sealing portion 3 is provided at the port of the cryogenic equipment joint 1, a bolt 4 is fixed at the lower end of the sealing portion 3, a round rod 5 is provided below the sealing portion 3, the round rod 5 is made of G10 steel material, an internal threaded hole 6 is formed above the round rod 5, the bolt 4 and the internal threaded hole 6 are threadedly matched, and a sealing connection portion 7 is provided at the port of the cryogenic equipment joint 1.

[0017] The above structure is a debugging and sealing mechanism for a low-temperature joint. The user screws the sealing part 3 into the internal threaded hole 6 on the round rod 5 through the bolt 4, so that the sealing part 3 and the round rod 5 are installed and matched with each other. During debugging, the user seals and inserts the sealing part 3 and the round rod 5 into the low-temperature equipment joint 1. The user completely seals the low-temperature equipment joint 1 and the sealing part 3 with each other through the sealing connection part 7. Compared with the prior art, it can prevent the cold energy of the low-temperature equipment from leaking from the sealing part of the joint, causing unnecessary loss of cold energy, and prevent the low-temperature joint and its sealing part from condensing dew and frost.

[0018] like Figure 2As shown, in some embodiments of the utility model, the sealing portion 3 includes a sealing head 31 arranged at the port of the cryogenic equipment connector 1, a boss 311 is provided above the sealing head 31, a plurality of slots 32 are provided at intervals on the sealing head 31, and a sealing O-ring 33 is provided on each of the slots 32. The user processes the round rod 5 into the required length, and after the round rod 5 and the sealing head 31 are installed and connected to each other, the round rod 5 is inserted into the cryogenic equipment connector 1. The material of the round rod 5 is G10 steel material. The thermal insulation performance of G10 steel material is better than that of common steel, and after the round rod 5 is inserted into the cryogenic equipment connector 1, the gap between them is small, so that the amount of cold conducted from the cryogenic equipment connector 1 is very small. When the round rod 5 is inserted, the sealing head 31 is sealed in the sealing connection portion 7 through the sealing O-ring 33 provided on the sealing sleeve on the slot 32.

[0019] like Figure 2 As shown, in some embodiments of the utility model, the sealing connection part 7 includes a card slot 71 arranged at the interface end of the low-temperature equipment connector 1, and a female head component 72 is sleeved and installed at the interface end of the low-temperature equipment connector 1 through the card slot 71, and a locking nut 73 is wrapped above the plugging head 31, and a step groove 731 is penetrated above the locking nut 73, and the locking nut 73 is threadedly arranged above the female head component 72. During installation, the user covers the plugging head 31 on the plugging head 31, and the plugging head 31 resists the boss 311 provided above the plugging head 31 at the step of the step groove 731, so that when the plugging head 31 is threadedly twisted on the female head component 72, the sealing O-ring 33 on the slot 32 is sealed in the female head component 72 until the locking nut 73 is completely locked on the female head component 72.

[0020] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A debugging and plugging mechanism for a low-temperature joint, characterized in that: include: A cryogenic equipment connector (1) is provided with a plugging portion (3) at the port of the cryogenic equipment connector (1), a bolt (4) is fixed at the lower end of the plugging portion (3), a round rod (5) is provided below the plugging portion (3), an internal threaded hole (6) is formed above the round rod (5), the bolt (4) and the internal threaded hole (6) are threadedly matched, and a sealing connection portion (7) is provided at the port of the cryogenic equipment connector (1).

2. A debugging and plugging mechanism for a low-temperature joint according to claim 1, characterized in that The plugging portion (3) comprises a plugging head (31) arranged at the port of the low-temperature equipment joint (1), a plurality of slots (32) are arranged at intervals on the plugging head (31), and a sealing sleeve is provided with a sealing O-ring (33) on each of the slots (32).

3. A debugging and plugging mechanism for a low-temperature joint according to claim 2, characterized in that The sealing connection portion (7) comprises a slot (71) arranged at the interface end of the cryogenic equipment connector (1); a female head component (72) is sleeved and installed at the interface end of the cryogenic equipment connector (1) through the slot (71); a locking nut (73) is wrapped above the plugging head (31); and the locking nut (73) is threadedly arranged above the female head component (72).

4. A debugging and plugging mechanism for a low-temperature joint according to claim 3, characterized in that A boss (311) is provided above the plugging head (31).

5. A debugging and plugging mechanism for a low-temperature joint according to claim 4, characterized in that A stepped through groove (731) is provided above the locking nut (73).

6. The debugging and plugging mechanism for low-temperature joints according to claim 1, characterized in that The round rod (5) is made of G10 steel.

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