Anti-backflow self-sealing condenser outlet pipe assembly

Abstract

The utility model discloses a kind of backflow prevention self-sealing condenser liquid outlet pipe assemblies, it is related to condenser technical field, including connecting pipe, the inside of connecting pipe is connected with sheet quick response valve and ball type reinforced seal valve, the end of connecting pipe is inserted with connector, the outer surface of connector is fixedly connected with middle baffle ring, the utility model is set by sheet quick response valve and ball type reinforced seal valve, be connected in the inside of connecting pipe, sheet quick response valve response time≤0.05 second, 6 times compared with traditional single-stage valve, small backflow can be quickly blocked, make low flow condition backflow leakage volume reduce more than 90%, ball type reinforced seal valve hard seal structure sealing specific pressure improves 30%, high pressure backflow leakage rate is controlled within 1×10 ‑6 ML / s, meet the zero leakage demand of high-precision condition, in this way, low flow low pressure condition and high pressure shutdown condition can be backflow prevention, completely block leakage risk.

Description

Technical Field

[0001] This utility model relates to the field of condenser technology, and in particular to a backflow-proof self-sealing condenser outlet pipe assembly. Background Technology

[0002] A condenser is a component of a refrigeration system, a type of heat exchanger that converts gas or vapor into liquid, rapidly transferring heat from the tubes to the surrounding air. The condenser's operation is exothermic, hence its relatively high temperature.

[0003] In the existing technology, a one-way valve is installed on the liquid outlet pipe of the condenser to prevent backflow. However, this method cannot meet the full operating conditions of the condenser, which includes "low flow steady-state operation - high pressure shutdown - load fluctuation". This directly causes backflow leakage and cascading problems, resulting in poor performance and easy damage to the sealing components. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the existing technology of installing a one-way valve on the condenser outlet pipe to prevent backflow cannot meet the full operating conditions of the condenser, such as "low flow steady-state operation - high pressure shutdown - load fluctuation", which directly causes backflow leakage and chain problems, resulting in poor performance and easy damage to the sealing components. Therefore, this invention proposes a backflow-proof self-sealing condenser outlet pipe assembly.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a backflow-proof self-sealing condenser outlet pipe assembly, including a connecting pipe, a thin-plate fast-response valve and a ball-type reinforced sealing valve connected in series inside the connecting pipe, a connector inserted into the end of the connecting pipe, a middle retaining ring fixedly connected to the outer surface of the connector, and a semi-clamping ring provided on the outer surface of the connecting pipe and outside the connector. Two semi-clamping rings are provided at the end of the connecting pipe, and bolts are installed between the ears of the two semi-clamping rings. One end of each bolt is threaded with a wing nut. The valve disc of the thin-plate fast-response valve is made of 0.8-1.2mm thick 316L stainless steel sheet with rounded edges and a center... A φ5mm stainless steel guide rod is welded, which cooperates with the guide sleeve on the pipe body to prevent valve disc displacement. The valve core of the ball-type reinforced sealing valve is made of a φ10-20mm solid 316L stainless steel ball. Arc-shaped guide frames are set on both sides of the ball to restrict the ball to move only along the axial direction and avoid jamming. Through the setting of the thin-plate fast response valve and the ball-type reinforced sealing valve, the two-stage valve adopts the cooperative logic of "low pressure first open then close, high pressure last open first close" to adapt to the full operating conditions of the condenser "load fluctuation - steady state operation - shutdown". The backflow control coverage reaches 100%, which completely solves the pain points of "low pressure leakage and high pressure failure" of traditional single-stage valves and avoids the problem of reduced heat exchange efficiency and internal cavitation corrosion caused by backflow medium.

[0006] Preferably, a rubber extrusion sheet is bonded and fixed inside the semi-clamping ring.

[0007] Preferably, a sealing protrusion is fixedly connected to the outer surface of the connector.

[0008] Preferably, a cleaning guide groove is provided on the outer surface of the connector and at one end near the connecting pipe.

[0009] Preferably, both ears of the half-ring are provided with through holes, and one ear of the half-ring, located at the edge of the through hole, is provided with a hexagonal recessed groove.

[0010] Preferably, the connecting pipe is provided with a rubber ring inside, and the inner ring surface of the rubber ring is provided with a deformation groove.

[0011] Preferably, a connecting hose is fixedly connected between the outer edges of the rubber rings.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by setting a thin-plate fast-response valve and a ball-type reinforced sealing valve in series inside the connecting pipe, the response time of the thin-plate fast-response valve is ≤0.05 seconds, which is 6 times faster than that of the traditional single-stage valve. It can quickly block minor backflow, reducing backflow leakage under low flow conditions by more than 90%. The ball-type reinforced sealing valve's hard seal structure increases the sealing specific pressure by 30%, and controls the high-pressure backflow leakage rate to 1×10⁻⁶.-6 Within mL / s, it meets the zero-leakage requirement for high-precision operating conditions. In this way, backflow can be prevented in low-flow and low-pressure operating conditions as well as high-pressure shutdown operating conditions, completely blocking the risk of leakage.

[0013] 2. In this utility model, by combining the connector and the half-clamp ring, the connector can be selected according to the different sizes of the condenser outlet to be fitted with the appropriate diameter for installation and use. It can also be adapted to most condenser installations. By setting the sealing convex ring, the connection strength and sealing performance with the connecting pipe can be increased. By setting the half-clamp ring and the bolt, it is easy to assemble different models of connectors. By setting the cleaning guide groove, it is easy to guide the end of the connecting pipe for easy assembly. By setting the rubber extrusion plate, it is used to protect the connecting pipe and prevent the half-clamp ring from squeezing and damaging the connecting pipe. By setting the rubber ring (7), when the refrigerant stops flowing, the refrigerant can be segmented by the rubber ring, which can restrict the refrigerant flow and prevent backflow. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a backflow-preventing self-sealing condenser outlet pipe assembly is provided for this utility model. Figure 2 An exploded view of the connection structure between the connecting pipe and the connector in the anti-backflow self-sealing condenser outlet pipe assembly is provided in this utility model. Figure 3 This invention presents a three-dimensional structural diagram of the rubber ring in the liquid outlet pipe assembly of an anti-backflow self-sealing condenser.

[0015] Legend: 1. Connecting pipe; 2. Thin-plate quick-response valve; 3. Ball-type reinforced sealing valve; 4. Connector; 5. Middle retaining ring; 6. Semi-clamping ring; 7. Rubber ring; 8. Rubber extrusion sheet; 9. Bolt; 10. Wing nut; 11. Sealing convex ring; 12. Cleaning guide groove; 13. Hexagonal embedded groove; 14. Through hole; 15. Connecting hose; 16. Deformation groove. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 - Figure 3 As shown, this utility model provides a backflow-proof self-sealing condenser outlet pipe assembly, including a connecting pipe 1. A thin-plate fast-response valve 2 and a ball-type reinforced sealing valve 3 are connected in series inside the connecting pipe 1. A connector 4 is inserted into the end of the connecting pipe 1. A middle retaining ring 5 is fixedly connected to the outer surface of the connector 4. A semi-clamping ring 6 is provided on the outer surface of the connecting pipe 1, located outside the connector 4. Two semi-clamping rings 6 are provided at the end of the connecting pipe 1. Bolts 9 are installed between the ears of the two semi-clamping rings 6. A wing nut 10 is threaded to one end of each bolt 9. The valve disc of the thin-plate fast-response valve 2 is made of 0.8-1.2mm thick 316L stainless steel sheet with rounded edges and a φ5mm stainless steel guide welded to the center. The guide rod and guide sleeve on the tube body cooperate to prevent valve disc displacement. The valve core of the ball-type reinforced sealing valve 3 is made of φ10-20mm solid 316L stainless steel ball. Arc-shaped guide frames (0.5mm gap) are set on both sides of the ball to restrict the ball to move only along the axial direction and avoid jamming. Through the setting of the thin-plate fast response valve 2 and the ball-type reinforced sealing valve 3, the collaborative logic of "low pressure first open and then close, high pressure last open and first close" is adopted. It is suitable for the condenser's full operating conditions of "load fluctuation - steady state operation - shutdown". The backflow control coverage reaches 100%, which completely solves the pain points of "low pressure leakage and high pressure failure" of traditional single-stage valves and avoids the condenser heat exchange efficiency reduction (actual efficiency improvement of 15%-20%) and internal cavitation corrosion problems caused by backflow medium.

[0019] The specific settings and functions of this embodiment are described in detail below. By connecting the thin-plate fast-response valve 2 and the ball-type reinforced sealing valve 3 in series inside the connecting pipe 1, the response time of the thin-plate fast-response valve 2 is ≤0.05 seconds, which is 6 times faster than that of a traditional single-stage valve (response delay ≥0.3 seconds). This allows for rapid blocking of minute backflow, reducing backflow leakage under low-flow conditions by more than 90%. The ball-type reinforced sealing valve 3, with its hard-seal structure, increases the sealing specific pressure by 30%, controlling the high-pressure backflow leakage rate to 1×10⁻⁶. -6 Within mL / s, it meets the zero-leakage requirement for high-precision operating conditions. In this way, backflow can be prevented in low-flow and low-pressure operating conditions as well as high-pressure shutdown operating conditions, completely blocking the risk of leakage.

[0020] Example 2: Figure 1 - Figure 3As shown, a rubber extrusion sheet 8 is bonded and fixed inside the semi-clamping ring 6, a sealing protrusion ring 11 is fixedly connected to the outer surface of the connector 4, a cleaning guide groove 12 is provided on the outer surface of the connector 4 near the end of the connecting tube 1, through holes 14 are provided on both ears of the semi-clamping ring 6, a hexagonal inset groove 13 is provided on one ear of the semi-clamping ring 6 at the edge of the through hole 14, a rubber ring 7 is provided inside the connecting tube 1, a deformation groove 16 is provided on the inner ring surface of the rubber ring 7, and a connecting hose 15 is fixedly connected between the outer edges of the rubber ring 7.

[0021] The overall effect of this embodiment is that, through the combination of connector 4 and semi-clamping ring 6, connector 4 with a diameter suitable for different condenser outlet sizes can be selected for assembly, facilitating installation and use. It is also compatible with most condenser installations. The sealing convex ring 11 increases the connection strength and sealing performance with the connecting pipe 1. The semi-clamping ring 6 and bolt 9 facilitate assembly between different models of connector 4. The cleaning guide groove 12 facilitates guiding the end of the connecting pipe 1 for easy assembly. The rubber extrusion plate 8 protects the connecting pipe 1, preventing the semi-clamping ring 6 from crushing it. The rubber ring 7 can segment the refrigerant when it stops flowing, restricting its flow and preventing backflow.

[0022] The usage and working principle of this device are as follows: During assembly, insert the rubber ring 7 into the connecting pipe 1, then insert the connector 4 into the end of the connecting pipe 1. Connect the thin-plate quick-response valve 2 and the ball-type reinforced sealing valve 3 to the connecting pipe 1. According to the diameter of the condenser connection port, rotate the connector 4 to install it. Place the half-clamping ring 6 in the overlapping area between the connecting pipe 1 and the connector 4. Insert the bolt 9 into the through hole 14 and make the end of the bolt 9 engage with the hexagonal recess 13. Then use the wing nut 10 to connect with the bolt 9. This completes the installation between the connector 4 and the connecting pipe 1.

[0023] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A backflow-proof self-sealing condenser outlet pipe assembly, comprising a connecting pipe (1), characterized in that: The connecting pipe (1) is connected in series with a thin-film fast-response valve (2) and a ball-type reinforced sealing valve (3). A connector (4) is inserted into the end of the connecting pipe (1). A middle retaining ring (5) is fixedly connected to the outer surface of the connector (4). A half retaining ring (6) is provided on the outer surface of the connecting pipe (1) and outside the connector (4). There are two half retaining rings (6) at the end of the connecting pipe (1). A bolt (9) is installed between the ears of the two half retaining rings (6). A wing nut (10) is threaded to one end of the bolt (9).

2. The anti-backflow self-sealing condenser outlet pipe assembly according to claim 1, characterized in that: The rubber extrusion sheet (8) is bonded and fixed inside the semi-clamping ring (6).

3. The anti-backflow self-sealing condenser outlet pipe assembly according to claim 1, characterized in that: A sealing ring (11) is fixedly connected to the outer surface of the connector (4).

4. The anti-backflow self-sealing condenser outlet pipe assembly according to claim 1, characterized in that: A cleaning guide groove (12) is provided on the outer surface of the connector (4) and at one end near the connecting pipe (1).

5. The backflow prevention self-sealing condenser outlet pipe assembly according to claim 1, characterized in that: Both ears of the half-ring (6) are provided with through holes (14), and one ear of the half-ring (6) and located at the edge of the through hole (14) is provided with a hexagonal inset groove (13).

6. The anti-backflow self-sealing condenser outlet pipe assembly according to claim 1, characterized in that: The connecting pipe (1) is provided with a rubber ring (7) inside, and the inner ring surface of the rubber ring (7) is provided with a deformation groove (16).

7. The backflow prevention self-sealing condenser outlet pipe assembly according to claim 6, characterized in that: A connecting hose (15) is fixedly connected between the outer edges of the rubber ring (7).

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