Leakage-proof system for stop valve of air conditioner
The integrated sealing plate and protrusion design solves the leakage and safety risks of large gate valves, realizing a low-cost and safe gate valve leak-proof system.
Patent Information
- Application Number
- CN202520503462.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Large gate valves have a problem with minute one-way leakage. Existing plugs are difficult to manufacture, costly, and pose safety risks.
The plug design adopts an integrated molding of the sealing plate, connecting part and protrusion. The sealing plate is connected to the gate valve. The diameter of the protrusion is less than 16 mm. It is processed by stamping process. The end of the protrusion does not need to be welded. It is designed to have weak pressure resistance so that it will burst automatically to avoid leakage and safety accidents.
Simplify processing, reduce costs, avoid leakage and safety accidents, and ensure the safety of the gate valve.
Smart Images
Figure CN223690659U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of stop valve plug, especially to an air conditioner stop valve leakproof system. BACKGROUND
[0002] With the more and more wide use of central air conditioner multi-splitter, in order to improve the performance-price ratio of air conditioner and reduce the floor area, the capacity of outdoor unit of multi-splitter is getting larger and larger, and the maximum cooling capacity of single machine has reached 140 kW, which leads to the use of larger high-low pressure stop valve. Due to the structure limitation of stop valve, the larger the valve body is, the larger and heavier the valve core is, which makes it difficult to ensure the coaxiality of valve core and stop valve body. In addition, the locking torque of stop valve cannot be too large, otherwise the valve core hexagonal hole will slip when the valve core is opened, and the valve core is difficult to open. The above two factors inevitably lead to small leakage of large stop valve, and the leakage direction is one-way, which can only leak from the system to the outside.
[0003] At present, the way to solve the leakage problem is to weld a plug on the connecting pipe of the stop valve, as shown in Figure 4 The plug is welded by a first connecting pipe 41 and a second connecting pipe 42, the diameter of the second connecting pipe 42 is smaller, and the operator needs to clamp the second connecting pipe 42 first when installing the machine, and then connect the indoor unit pipeline. The diameter of the first connecting pipe 41 is much larger than that of the second connecting pipe 42, and the tail end of the first connecting pipe 41 is stepped and shrunk, so the processing difficulty is large and needs to go through multiple stages of shrinkage; the end of the second connecting pipe 42 needs to be spin-welded and then welded.
[0004] Due to the requirement of manual welding on the distance between the two welding openings, if the distance is too small, the two welding openings will affect each other, so the plug is relatively long, the material is more, the processing amount is large, and the cost is high. The end sealing welding of the second connecting pipe 42 requires high welding level, and if the operation is not proper during welding, it is easy to leak after installation. In winter, during the performance detection process of the outdoor unit, the stop valve will leak liquid refrigerant into the plug, and if the outdoor unit is transported to the warehouse or container, due to the increase of environmental temperature, the liquid refrigerant in the plug will change into gas, which will cause the pressure between the stop valve and the plug to be too high, which may cause the stop valve body to burst, or safety accidents may occur when clamping the second connecting pipe 42 during installation of the machine, and the safety risk is high. INVENTION CONTENTS
[0005] In view of the problems of large amount of plug material, large processing difficulty and high safety risk in the prior art, the utility model provides an air conditioner stop valve leakproof system.
[0006] The utility model provides the following technical scheme: an air conditioner stop valve leak protection system, including stop valve, stop valve one end is provided with refrigerant pipeline, and the other end is provided with the plug, the plug includes the closing plate, the closing plate is provided with the connecting portion who is connected with the stop valve to the stop valve side, the closing plate is provided with the convex portion away from the stop valve side, be provided with the cavity in the convex portion, the closing plate is provided with the opening with the cavity intercommunication, the closing plate, connecting portion, convex portion integrated, and the wall thickness of convex portion is less than the closing plate.
[0007] Preferably, a connecting pipe is further arranged between the connecting portion and the stop valve.
[0008] Preferably, the diameter of the convex portion is less than or equal to 16 mm.
[0009] The utility model has the advantages that: the plug is integrally formed, compared with the prior art, simple processing, small overall size, low cost, and the convex portion does not need manual welding at the end, and there is no risk of leakage; the pressure-bearing capacity of the convex portion is weakened, and the convex portion automatically bursts when the pressure is too large, which can protect the stop valve from damage and avoid safety accidents of operating personnel during installation of equipment. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a schematic view of the first embodiment of the stop valve leak protection system.
[0011] Figure 2 It is a sectional view of one embodiment of the plug.
[0012] Figure 3 It is a schematic view of the second embodiment of the stop valve leak protection system.
[0013] Figure 4 It is a schematic view of the plug in the prior art.
[0014] Reference signs: 10-stop valve, 20-plug, 21-closing plate, 22-connecting portion, 23-convex portion, 24-cavity, 30-connecting pipe, 41-first connecting pipe, 42-second connecting pipe. DETAILED DESCRIPTION
[0015] The embodiments of the utility model will be described in more detail below in combination with the drawings and reference signs, so that those skilled in the art can implement after reading the specification. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model. EMBODIMENT
[0016] The utility model provides Figures 1-2The air conditioner stop valve leak-proof system shown in the figure comprises a stop valve 10, one end of which is provided with a refrigerant pipeline, and the other end is provided with a plug 20.
[0017] In the embodiment, the plug 20 comprises a sealing plate 21, which is provided with a connecting part 22 connected with the stop valve 10 on the side of the stop valve 10, and the connecting part 22 is threadedly connected or welded with the stop valve 10. The sealing plate 21 is provided with a protruding part 23 on the side away from the stop valve 10, the protruding part 23 is provided with a cavity 24, and the sealing plate 21 is provided with an opening communicating with the cavity 24. The diameter of the protruding part 23 is less than or equal to 16 mm, which is convenient for the operator to clamp off.
[0018] The sealing plate 21, the connecting part 22 and the protruding part 23 are integrally formed by stamping process, which is simple in processing and low in cost. The end of the protruding part 23 does not need to be welded manually, and there is no risk of leakage. In addition, it is not necessary to consider the welding requirements as in the prior art. The overall size is small, the amount is saved, and the cost is low.
[0019] Further, the stamping parameters can be adjusted to make the wall thickness of the protruding part 23 smaller than that of the sealing plate 21, weaken the pressure bearing capacity of the protruding part 23, and the designed value of the pressure bearing capacity is smaller than that of the stop valve. When the pressure in the plug is too large, the protruding part 23 will automatically burst, which can not only protect the stop valve from being damaged, but also avoid safety accidents of the operator during installation of the equipment. Embodiment
[0020] The utility model provides a kind of air conditioner stop valve leak-proof system as Figure 3 The air conditioner stop valve leak-proof system shown in the figure comprises a stop valve 10, one end of which is provided with a refrigerant pipeline, and the other end is provided with a plug 20.
[0021] The utility model is not limited to the material of the plug, and preferably at least one of red copper, brass, stainless steel or carbon steel can be used.
[0022] The above is one or more embodiments of the utility model, which is described in more detail and in more detail, but it cannot be understood as limiting the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. An air conditioner stop valve leak prevention system comprising a stop valve provided with a refrigerant pipe at one end and a plug at the other end, characterized in that, The plug comprises a sealing plate, a connecting part connected with the stop valve is arranged on one side of the sealing plate, a protruding part is arranged on the other side of the sealing plate, a cavity is arranged in the protruding part, an opening communicating with the cavity is arranged on the sealing plate, the sealing plate, the connecting part and the protruding part are integrally formed, and the wall thickness of the protruding part is smaller than that of the sealing plate.
2. The air conditioner stop valve leak prevention system of claim 1, wherein, A connecting pipe is further arranged between the connecting part and the stop valve.
3. The air conditioner stop valve leak prevention system of claim 1, wherein, The diameter of the protruding part is less than or equal to 16 mm.