CN212455828U - High-strength adapter for refrigeration equipment - Google Patents

Abstract

The utility model provides a high strength crossover sub for refrigeration plant, for hollow tubular structure, including a body coupling's interior end and external end, be provided with the internal thread on the inner wall of interior end, be provided with the external screw thread on the external end outer wall, the concatenation department of interior end and external end sets up the annular groove. The utility model discloses an aspect improves the joint strength between valve joint and the pipeline joint, improves crossover sub's life-span, and on the other hand guarantees the compactness and the leakproofness of connecting, avoids the refrigerant to leak outward.

Description

High-strength adapter for refrigeration equipment

Technical Field

The utility model relates to a refrigeration plant technical field especially relates to a high strength crossover sub for refrigeration plant.

Background

The refrigerating equipment is mainly used for refrigerating food, various goods and indoor air conditioning in summer. The system mainly comprises a compressor, an expansion valve, an evaporator, a condenser, accessories and pipelines. In the process of laying and installing the refrigeration equipment, all parts are mainly connected through different pipelines, so that the flowing of a refrigerant is ensured. And the connection between pipeline and the valve joint needs to guarantee the leakproofness, otherwise leads to the refrigerant excessive easily, causes the waste of refrigerant. In the prior art, because the inner diameters of the joints of the valves and the pipeline joints are different, the sealing connection cannot be directly realized. At present, the connection between the valve connector and the pipeline is generally carried out by the conversion connector of the refrigeration equipment. However, the conventional adapter has a short service life, is usually formed by directly processing a thin steel pipe, has a thin pipe wall, leads to shallow threads at the joint, is very easy to cause a phenomenon of loosening of sliding wires, and is easy to deform or even break due to the thin pipe wall, so that the sealing property of the connection between the valve joint and the pipeline of each device is damaged, and the refrigerant is leaked. Therefore, a high-strength adapter is needed, on the one hand, the connection strength between the valve joint and the pipeline joint is improved, the service life of the adapter is prolonged, on the other hand, the tightness and the sealing performance of connection are guaranteed, and the refrigerant is prevented from leaking outwards.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides a high strength crossover sub for refrigeration plant.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-strength adapter for refrigeration equipment is of a hollow tubular structure and comprises an inner connecting end and an outer connecting end which are integrally connected, wherein inner threads are arranged on the inner wall of the inner connecting end, outer threads are arranged on the outer wall of the outer connecting end, and an annular groove is formed in the splicing position of the inner connecting end and the outer connecting end.

Preferably, the wall thickness of the inner terminal is greater than twice the depth of the internal thread.

Preferably, the wall thickness of the box end is greater than twice the depth of the external thread.

Preferably, the wall thickness of the inner terminal is greater than the wall thickness of the outer terminal.

Preferably, the internal thread comprises first and second opposed ends, the first end having an internal diameter greater than the internal diameter of the second end.

Preferably, the external thread comprises third and fourth opposing ends, the third end having an outer diameter greater than the outer diameter of the fourth end.

Preferably, the annular groove is adjacent to the external thread, the depth of the annular groove being greater than the depth of the external thread.

Preferably, the depth of the side wall of the annular groove connected with the inner joint end is greater than that of the side wall of the annular groove connected with the outer joint end.

Preferably, a first plane and a second plane which are parallel to each other are arranged on the outer side of the outer connecting end, and the distance between the first plane and the second plane is smaller than the outer diameter of the inner connecting end.

Preferably, the adapter is integrally formed by machining solid round steel.

Compared with the prior art, the beneficial effects of the utility model are that: the adapter joint prolongs a valve joint of the equipment and converts the valve joint into a joint matched with the size of the pipeline interface through the matching of the internal thread and the external thread at two ends, so that the valve joints with different calibers are tightly connected with the pipeline interface, and the adaptability is improved; the pipe wall thickness of the adapter is thick, the adapter is not easy to deform, the threads are deep and not easy to slip, the connection tightness is improved, the strength of the adapter is improved, the adapter is enabled to be resistant to bending and breaking, the service life of the adapter is prolonged, and the equipment maintenance cost is reduced; in addition, the design of the annular groove can lead a sealing ring (the thickness of the sealing ring is larger than the depth of the annular groove) to be sleeved in the annular groove after the external thread of the adapter and the interface to be connected are screwed to the end of the external thread, thus ensuring the sealing property between the external connection end and the interface with connection and preventing the leakage of the refrigerant; the external screw thread is by the outer end grow gradually of external end, and the internal thread reduces gradually by the outer end of inscription end, so can guarantee that crossover sub and treat that the interface connects soon along with the screw thread and connect more deeply tighter, guarantee that the screw thread connects closely soon, prevents to loosen.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a high-strength adapter for a refrigeration device of the present invention.

Fig. 2 is a top view of the high-strength adapter for a refrigeration device of the present invention.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Please refer to fig. 1 and fig. 2 in combination, in which fig. 1 is a schematic diagram of an overall structure of a high-strength adapter for a refrigeration device according to the present invention, and fig. 2 is a top view of the high-strength adapter for a refrigeration device according to the present invention.

As shown in fig. 1, a high-strength adapter for a refrigeration device according to an embodiment of the present invention is a hollow tubular structure, and ensures that both ends are connected to a valve joint and a pipeline joint and then are still connected when in use, so that a refrigerant can pass through smoothly, and the fluidity of the refrigerant is ensured; the connecting structure comprises an inner connecting end 1 and an outer connecting end 2 which are integrally connected, wherein an inner thread 3 is arranged on the inner wall of the inner connecting end 1, an outer thread 4 is arranged on the outer wall of the outer connecting end 2, and an annular groove 5 is arranged at the splicing part of the inner connecting end 1 and the outer connecting end 2.

When refrigeration plant assembled joint, can connect directly to connect together with the pipeline with the valve joint soon, and when pipeline connects and the valve joint size mismatch, then can't accomplish the lug connection, need connect with the help of the crossover sub promptly this moment, convert great joint with less joint conversion, the valve joint is screwed joint usually, consequently is to connect the great valve joint with less valve promptly to adapt to great pipeline joint size. The utility model discloses an adapter, the spiral shell footpath of internal thread 3 is less than the spiral shell footpath of external screw thread 4, is to convert less external joint into great external joint promptly to connect great external joint promptly external end 2 soon with treating the attach fitting. Meanwhile, the annular groove 5 is designed to be sleeved with a thicker sealing ring, and is filled between the end part of the joint to be connected and the inner connecting end 1 when the outer connecting end 2 is connected with the joint to be connected, so that the connection tightness between the outer connecting end 2 and the joint to be connected is ensured, and the refrigerant leakage caused by the untight connection between the external thread 4 and the internal thread of the joint to be connected is prevented.

Preferably, the wall thickness of the inner terminal 1 is greater than twice the depth of the internal thread 3. Further, the wall thickness of the circumscribing end 2 is greater than twice the depth of the external thread 4. The arrangement ensures that the conversion joint has thicker wall thickness, thereby ensuring that the thickness of the wire tube is large, preventing the conversion joint from deforming because the external joint extrudes the external connection end 2 from outside to inside or preventing the tube wall from being fractured because the external joint extrudes the internal connection end 1 from inside to outside, ensuring the structural strength of the conversion joint and prolonging the service life of the conversion joint.

Preferably, the wall thickness of the inner connecting end 1 is greater than that of the outer connecting end 2, so that after the outer connecting end 2 is connected with the outer connector, the wall thickness of the outer connector cannot excessively protrude out of the outer side of the adapter, the appearance is attractive, the outer connecting end 2 can be prevented from excessively and rotatably connecting into the outer connector due to the fact that the internal thread 3 of the outer connector is long, and the limiting effect is achieved.

Preferably, the internal thread 3 comprises opposite first and second ends 31, 32, the first end 31 having an internal diameter greater than the internal diameter of the second end 32. In an embodiment, the inner diameter of the internal thread 3 gradually decreases from the first end 31 to the second end 32, so that the screwing of the internal connection end 1 and the joint to be connected is ensured to be tighter and tighter from outside to inside, the situation that the joint cannot be screwed due to production errors can be overcome, the connection tightness of the internal connection end 1 is ensured, the joint to be connected can be prevented from being excessively screwed into the internal connection end 1, and the fastening and limiting effects are achieved.

Preferably, the external thread 4 comprises a third end 41 and a fourth end 42 opposite to each other, the third end 41 having an outer diameter greater than the outer diameter of the fourth end 42. In an embodiment, the outer diameter of the external thread 4 gradually increases from the fourth end 42 to the third end 41, so that the external connection end 2 is screwed more tightly from outside to inside when being screwed with the joint to be connected, the situation that the joint cannot be screwed due to production errors can be overcome, the connection tightness of the internal connection end 1 is ensured, the joint to be connected can be prevented from being screwed into the external connection end 2 excessively, and the fastening and limiting effects are achieved.

Preferably, the annular groove 5 is adjacent to the external thread 4, the depth of the annular groove 5 is greater than that of the external thread 4, so that the bottom edge of the external thread 4 can be blocked when the sealing ring is sleeved in the annular groove 5, the sealing ring can be prevented from slipping from the annular groove 5, when the outer connecting end 2 is screwed with the joint to be connected, the sealing ring is extruded and filled on one side surface of the inner connecting end 1 connected with the annular groove 5 and the end part of the joint to be connected, a sealing effect is achieved, and refrigerant leakage caused by untight screwing is avoided.

Preferably, the depth of the side wall of the annular groove 5 connected with the inner connection end 1 is greater than the depth of the side wall of the annular groove 5 connected with the outer connection end 2, so as to abut against a sealing ring sleeved in the annular groove 5, ensure that the sealing ring can be filled between the outer connection end 2 and a joint to be connected after the outer connection end is connected and screwed, and the side wall of the annular groove 5 connected with the inner connection end 1 is used for limiting and blocking extrusion.

As shown in fig. 1 and 2, preferably, the outer side of the external connection end 2 is provided with a first plane 11 and a second plane 12 which are parallel to each other, and the distance between the first plane 11 and the second plane 12 is smaller than the outer diameter of the internal connection end 1. The first plane 11 and the second plane 12 are arranged to provide a clamping plane for the adjustable wrench when the inner connection end 1 is screwed with the joint to be connected, so that the inner connection end 1 can be screwed with the joint to be connected better.

Preferably, the adapter is integrally formed by machining solid round steel and is preferably formed by machining high-strength Q235B carbon steel, so that the structural strength of the whole adapter is improved, the possibility of deformation, bending and fracture is reduced, and the service life of the adapter is prolonged.

From the above, the high-strength adapter for the refrigeration equipment of the utility model prolongs the valve joint of the equipment and converts the valve joint into the joint matched with the pipeline interface in size through the matching of the internal thread and the external thread at the two ends, thereby realizing the tight connection between the valve joints with different calibers and the pipeline interface and improving the adaptability; the pipe wall thickness of the adapter is thick, the adapter is not easy to deform, the threads are deep and not easy to slip, the connection tightness is improved, the strength of the adapter is improved, the adapter is enabled to be resistant to bending and breaking, the service life of the adapter is prolonged, and the equipment maintenance cost is reduced; in addition, the design of the annular groove can lead a sealing ring (the thickness of the sealing ring is larger than the depth of the annular groove) to be sleeved in the annular groove after the external thread of the adapter and the interface to be connected are screwed to the end of the external thread, thus ensuring the sealing property between the external connection end and the interface with connection and preventing the leakage of the refrigerant; the external screw thread is by the outer end grow gradually of external end, and the internal thread reduces gradually by the outer end of inscription end, so can guarantee that crossover sub and treat that the interface connects soon along with the screw thread and connect more deeply tighter, guarantee that the screw thread connects closely soon, prevents to loosen.

The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.

Claims (10)

1. The utility model provides a high strength crossover sub for refrigeration plant, is hollow tubular structure which characterized in that: the connecting structure comprises an inner connecting end and an outer connecting end which are integrally connected, wherein an internal thread is arranged on the inner wall of the inner connecting end, an external thread is arranged on the outer wall of the outer connecting end, and an annular groove is arranged at the splicing part of the inner connecting end and the outer connecting end.

2. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the wall thickness of the inner end is greater than twice the depth of the internal thread.

3. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the wall thickness of the box end is greater than twice the depth of the external thread.

4. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the wall thickness of the inner connecting end is larger than that of the outer connecting end.

5. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the internal thread includes opposing first and second ends, the first end having an inner diameter greater than an inner diameter of the second end.

6. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the external thread comprises a third end and a fourth end which are opposite, and the outer diameter of the third end is larger than that of the fourth end.

7. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the annular groove is adjacent to the external thread, and the depth of the annular groove is larger than that of the external thread.

8. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the depth of the side wall of the annular groove connected with the inner joint end is larger than that of the side wall of the annular groove connected with the outer joint end.

9. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the outer side of the external connection end is provided with a first plane and a second plane which are parallel to each other, and the distance between the first plane and the second plane is smaller than the outer diameter of the internal connection end.

10. The high strength crossover joint for refrigeration equipment of claim 1, wherein: the crossover sub is solid round steel integrated into one piece machine-shaping.

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