Pipe connecting device for refrigerant R290 circulation

Abstract

The utility model provides a pipe connecting device for refrigerant R290 circulation, belongs to the technical field of refrigerating systems, and aims to solve the problem that refrigerant leakage of an existing pipe connecting device for refrigerant R290 circulation cannot be conveniently and timely detected. Comprising a multi-way connector body. The lower connecting disc is fixedly connected to the upper part of the multi-way joint main body; the upper connecting disc is arranged at the upper part of the lower connecting disc; the connecting pipeline is fixedly connected to the upper part of the upper connecting disc; the multiple sets of connecting bolts are arranged, and the multiple sets of connecting bolts are connected to the interiors of the lower connecting disc and the upper connecting disc through threads; the sealing assembly is arranged in the lower connecting disc; and the warning assembly is arranged in the upper connecting disc. The utility model has the advantages of sealing enhancement, air leakage warning, convenience in use and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to refrigeration system technical field, more specifically, it is particularly related to the pipe connecting device for refrigerant R290 circulation. BACKGROUND

[0002] Refrigerant R290 (propane) as an environmental protection type refrigerant, because its good refrigeration performance and environmental protection performance is widely used in air conditioning, refrigerator, refrigerator car and other refrigeration system. In the refrigeration system, to ensure that the refrigerant R290 can flow smoothly in the circulating pipeline, the pipe fittings need to be effectively connected together, so a kind of pipe connecting device for refrigerant R290 circulation is needed. The existing pipe connecting device for refrigerant R290 circulation is mainly composed of pipe, joint, connecting piece and the like, the pipe is connected together through joint and connecting piece to form a circulating pipeline.

[0003] The utility model discloses a four -way reversing valve pipe, four -way reversing valve and refrigerant circulating system, and one end of its pipe body (3) is the interface for connecting four -way reversing valve main valve, and the other end is the flared end (4) for connecting system pipeline, the pipe body (3) is stainless steel pipe body, and copper bushing is arranged on the inner wall of the flared end (4), the inner end of the copper bushing (5) is equipped with inner flanging (6), and the outer end of the copper bushing (5) is equipped with outer flanging (7). The material of the pipe is replaced by stainless steel instead of traditional red copper, and the structure of the welding position is improved, so that it can be welded and connected with system pipe fittings by brazing process, so that the product cost is effectively reduced under the premise of not changing the welding process, not increasing the welding difficulty and ensuring the welding quality. (5);The copper bushing (5) and the flared end (4) are welded and connected.

[0004] Based on the above, the existing pipe connecting device for refrigerant R290 circulation, after long time use of its joint and pipe, is prone to aging and refrigerant leakage, the refrigerant is mostly circulated by compressor, the power of a compressor is small, the internal pressure of pipeline during circulation is small, refrigerant R290 leakage is not easy to detect, refrigerant R290 is a flammable product, refrigerant leakage will lead to refrigeration efficiency decline and safety hazard, and affect the overall performance of the system. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a pipe connecting device for refrigerant R290 circulation, to solve the problem that the pipe connecting device for refrigerant R290 circulation is prone to aging and refrigerant leakage after long time use of its joint and pipe, the refrigerant is mostly circulated by compressor, the power of a compressor is small, the internal pressure of pipeline during circulation is small, refrigerant R290 leakage is not easy to detect, refrigerant R290 is a flammable product, refrigerant leakage will lead to refrigeration efficiency decline and safety hazard, and affect the overall performance of the system.

[0006] The utility model discloses a connecting pipe device for refrigerant R290 circulation purposes and functions, and the following specific technical means are achieved:

[0007] Connecting pipe device for refrigerant R290 circulation, including multichannel joint main part;

[0008] Lower connecting disc, lower connecting disc fixedly connected on multichannel joint main part upper portion;

[0009] Upper connecting disc, upper connecting disc sets up on lower connecting disc upper portion;

[0010] Connecting pipeline, connecting pipeline fixedly connected on upper connecting disc upper portion;

[0011] Connecting bolt, connecting bolt is provided with multiple groups, and multiple connecting bolts are connected in lower connecting disc and upper connecting disc inside through thread;

[0012] Sealing assembly, sealing assembly sets up in lower connecting disc inside;

[0013] Warning assembly, warning assembly sets up in upper connecting disc inside.

[0014] Further, the sealing assembly includes:

[0015] Conical clamping table, conical clamping table fixedly installed in lower connecting disc inside;

[0016] Conical interface, conical interface fixedly installed in upper connecting disc inside.

[0017] Further, the sealing assembly further includes:

[0018] First sealing ring, first sealing ring fixedly installed in lower connecting disc and upper connecting disc intermediate position;

[0019] Second sealing ring, second sealing ring is provided with multiple groups, and multiple second sealing rings are clamped on the outside of conical clamping table.

[0020] Further, the warning assembly includes:

[0021] Arc shallow groove, arc shallow groove is set up in lower connecting disc and upper connecting disc inside;

[0022] Inflating port, inflating port fixedly installed in lower connecting disc bottom.

[0023] Further, the warning assembly further includes:

[0024] Detection cylinder, detection cylinder fixedly installed on upper connecting disc upper portion;

[0025] Through groove, through groove is set up in upper connecting disc inside.

[0026] Further, the warning assembly further comprises:

[0027] The elastic diaphragm is fixedly connected at the bottom of the detection cylinder;

[0028] The electronic bidirectional trigger switch is fixedly installed in the detection cylinder and is fixedly connected to the upper side of the elastic diaphragm.

[0029] The warning mechanism is threadedly connected to the top of the detection cylinder and is connected to the electronic bidirectional trigger switch through a line and forms a switch circuit.

[0030] Compared with the prior art, the utility model has the advantages that:

[0031] Firstly, the utility model has a sealing assembly, after the multi-way connector main body and the connecting pipeline connector pipe, the tapered surface of the tapered clamping table and the tapered interface forms a connecting port, the tapered connecting port has the advantages of good sealing performance, high connection strength, strong impact resistance and the like, a plurality of second sealing rings further strengthen the sealing effect of the tapered connecting port, the sealing performance of the lower connecting disc and the upper connecting disc of the first sealing ring, the multi-layer sealing effect of the second sealing ring and the first sealing ring, reduces the risk of leakage, and greatly improves the sealing performance of the device.

[0032] Secondly, the utility model has a warning assembly, after the multi-way connector main body and the connecting pipeline connector pipe, two groups of arc-shaped shallow grooves combine to form a cavity, the elastic diaphragm is used for monitoring the air pressure inside the cavity, whether the air pressure inside the cavity decreases or increases, the elastic diaphragm is driven to contract, the elastic diaphragm pulls or presses the electronic bidirectional trigger switch, the warning mechanism issues a warning, and timely maintenance is prompted in case of leakage, and the inert gas is used to replace the air inside the cavity, so that the warning mechanism is prevented from being misreported due to the thermal expansion and cold contraction of the air affecting the air pressure inside the cavity.

[0033] The utility model has the advantages of reinforced sealing, gas leakage warning, convenient use and the like, the tapered connecting port, the second sealing ring and the first sealing ring greatly improve the sealing performance of the device, and the elastic diaphragm reacts to the change of the air pressure inside the cavity, so that timely warning is given after the connector pipe position leaks, timely maintenance is reminded, safety and normal work are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the main structure schematic view of the utility model.

[0035] Figure 2 It is the lower connecting disc structure schematic view of the utility model.

[0036] Figure 3It is the upper connecting disc structure schematic view of the utility model.

[0037] Figure 4 It is the detection cylinder structure schematic view of the utility model.

[0038] Figure 5 It is the electronic bidirectional trigger switch structure schematic view of the utility model.

[0039] In the drawing, the correspondence between the component name and the drawing number is as follows:

[0040] 1, multi-way connector main body;2, connecting pipeline;3, lower connecting disc;301, inflation port;302, arc shallow groove;303, first sealing ring;304, tapered clamping table;305, second sealing ring;4, upper connecting disc;401, tapered interface;402, through groove;5, connecting bolt;6, detection cylinder;601, elastic diaphragm;602, electronic bidirectional trigger switch;603, warning mechanism. Specific implementation

[0041] The implementation of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0042] Example one:

[0043] As shown in the accompanying Figure 1 to the accompanying Figure 5 As shown:

[0044] The utility model provides a pipe connecting device for refrigerant R290 circulation, including multi-way connector main body 1;

[0045] Lower connecting disc 3, lower connecting disc 3 is fixedly connected on the upper portion of multi-way connector main body 1;

[0046] Upper connecting disc 4, upper connecting disc 4 is arranged on the upper portion of lower connecting disc 3;

[0047] Connecting pipeline 2, connecting pipeline 2 is fixedly connected on the upper portion of upper connecting disc 4;

[0048] Connecting bolt 5, connecting bolt 5 is provided with multiple groups, and multiple groups of connecting bolt 5 are connected in the interior of lower connecting disc 3 and upper connecting disc 4 through threads;

[0049] Sealing assembly, sealing assembly is arranged in the interior of lower connecting disc 3.

[0050] Among them, the sealing assembly includes:

[0051] Tapered clamping table 304, tapered clamping table 304 is fixedly installed in the interior of lower connecting disc 3;

[0052] The conical interface 401 is fixedly installed inside the upper connecting disc 4, and has the advantages of good sealing performance, high connection strength, strong impact resistance and the like when the conical clamping table 304 is clamped into the inside of the conical interface 401 and the conical surfaces of the conical clamping table 304 and the conical interface 401 are in contact when the lower connecting disc 3 and the upper connecting disc 4 are butted and fixed by the connecting bolt 5.

[0053] The sealing assembly further comprises:

[0054] The first sealing ring 303 is fixedly installed at the intermediate position of the lower connecting disc 3 and the upper connecting disc 4.

[0055] The second sealing ring 305 is provided in multiple groups, and the multiple groups of second sealing rings 305 are clamped outside the conical clamping table 304, and have the effect of strengthening the sealing capability of the conical clamping table 304 and the conical interface 401 after being connected, and the first sealing ring 303 strengthens the sealing performance of the lower connecting disc 3 and the upper connecting disc 4.

[0056] The specific use mode and effect of the embodiment are as follows:

[0057] The conical clamping table 304 is clamped into the inside of the conical interface 401, and the conical surfaces of the conical clamping table 304 and the conical interface 401 are in contact when the lower connecting disc 3 and the upper connecting disc 4 are butted and fixed by the connecting bolt 5, and have the advantages of good sealing performance, high connection strength, strong impact resistance and the like.

[0058] The multiple groups of second sealing rings 305 strengthen the sealing capability of the conical clamping table 304 and the conical interface 401 after being connected, and the first sealing ring 303 strengthens the sealing performance of the lower connecting disc 3 and the upper connecting disc 4.

[0059] Embodiment two:

[0060] On the basis of embodiment one, as shown in Figures 1 to 5 The warning assembly further comprises:

[0061] The warning assembly is arranged inside the upper connecting disc 4.

[0062] The warning assembly comprises:

[0063] The arc-shaped shallow groove 302 is arranged inside the lower connecting disc 3 and the upper connecting disc 4.

[0064] Inflating port 301, inflating port 301 is fixedly installed at the bottom of lower connecting disc 3; the role is that after the relative installation of lower connecting disc 3 and upper connecting disc 4, two groups of arc-shaped shallow grooves 302 are combined into a cavity structure, and the cavity formed by the combination of the two groups of arc-shaped shallow grooves 302 is filled with inert gas through inflating port 301, so as to reduce the influence of temperature on the gas in the cavity, and inflating port 301 is plugged after the filling of inert gas.

[0065] The warning assembly further comprises:

[0066] Detection cylinder 6, detection cylinder 6 is fixedly installed on the upper part of upper connecting disc 4;

[0067] Through groove 402, through groove 402 is opened in the inside of upper connecting disc 4; the role is that through groove 402 communicates the cavity formed by the combination of the two groups of arc-shaped shallow grooves 302 with detection cylinder 6.

[0068] The warning assembly further comprises:

[0069] Elastic membrane flap 601, elastic membrane flap 601 is fixedly connected at the bottom of detection cylinder 6;

[0070] Electronic bidirectional trigger switch 602, electronic bidirectional trigger switch 602 is fixedly installed in the inside of detection cylinder 6, and electronic bidirectional trigger switch 602 is fixedly connected to the upper side of elastic membrane flap 601;

[0071] Warning mechanism 603, warning mechanism 603 is screwedly connected to the top of detection cylinder 6, and warning mechanism 603 is connected with electronic bidirectional trigger switch 602 through a circuit and forms a switch circuit; the role is that warning mechanism 603 is composed of a buzzer, a power supply and the like. Electronic bidirectional trigger switch 602 utilizes electronic elements and circuits to realize the function of bidirectional triggering, so that no matter whether electronic bidirectional trigger switch 602 is pressed or pulled, the corresponding circuit can be triggered to act.

[0072] The specific use mode and role of the embodiment are as follows:

[0073] After the relative installation of lower connecting disc 3 and upper connecting disc 4, two groups of arc-shaped shallow grooves 302 are combined into a cavity structure, and the cavity formed by the combination of the two groups of arc-shaped shallow grooves 302 is filled with inert gas through inflating port 301, so as to avoid the influence of temperature on the gas in the cavity, produce the effect of thermal expansion and cold contraction to make the gas pressure in the cavity unstable, and inflating port 301 is plugged after the filling of inert gas.

[0074] When the interface structure formed by the taper surface of the taper clamp 304 and the taper interface 401 is damaged and leaks, the refrigerant first penetrates into the cavity when the internal pressure of the connecting pipeline 2 is large, so that the internal pressure of the cavity increases, and the inert gas in the cavity is extracted into the connecting pipeline 2 through the leakage position when the internal pressure of the connecting pipeline 2 is small, so that the internal pressure of the cavity decreases. Whether the internal pressure of the cavity decreases or increases, the elastic diaphragm 601 will be driven to contract, and the elastic diaphragm 601 will pull or press the electronic bidirectional trigger switch 602, so that the electronic bidirectional trigger switch 602 is triggered, the switch circuit is connected, and the warning mechanism 603 sends a warning to prompt timely repair and maintenance.

[0075] In this document, the following points need to be noted:

[0076] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0077] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0078] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A connection device for a refrigerant R290 cycle, characterized by: The connecting device for the refrigerant R290 cycle comprises a multi-way joint body (1), a lower connecting disc (3) fixedly connected to the upper portion of the multi-way joint body (1), an upper connecting disc (4) arranged on the upper portion of the lower connecting disc (3), a connecting pipeline (2) fixedly connected to the upper portion of the upper connecting disc (4), a plurality of connecting bolts (5) arranged in groups and threadedly connected to the inside of the lower connecting disc (3) and the upper connecting disc (4), a sealing assembly arranged in the inside of the lower connecting disc (3), and a warning assembly arranged in the inside of the upper connecting disc (4).

2. The connection device for the refrigerant R290 cycle according to claim 1, wherein: The sealing assembly comprises a tapered clamping shaft (304) fixedly installed in the inside of the lower connecting disc (3) and a tapered interface (401) fixedly installed in the inside of the upper connecting disc (4).

3. The connection device for the refrigerant R290 cycle according to claim 2, wherein: The sealing assembly further comprises a first sealing ring (303) fixedly installed at the intermediate position of the lower connecting disc (3) and the upper connecting disc (4) and a plurality of second sealing rings (305) arranged in groups and clamped to the outside of the tapered clamping shaft (304).

4. The connection device for the refrigerant R290 cycle according to claim 1, wherein: The warning assembly comprises an arc-shaped shallow groove (302) and an inflation port (301), wherein the arc-shaped shallow groove (302) is formed in the inside of the lower connecting disc (3) and the upper connecting disc (4), and the inflation port (301) is fixedly installed at the bottom of the lower connecting disc (3).

5. The connection device for the refrigerant R290 cycle according to claim 4, wherein: The warning assembly further comprises a detection cylinder (6) fixedly installed at the upper portion of the upper connecting disc (4) and a through groove (402) formed in the inside of the upper connecting disc (4).

6. The connection device for the refrigerant R290 cycle according to claim 4, wherein: The warning assembly further comprises an elastic membrane flap (601), an electronic bidirectional trigger switch (602) and a warning mechanism (603), wherein the elastic membrane flap (601) is fixedly connected to the bottom of the detection cylinder (6), the electronic bidirectional trigger switch (602) is fixedly installed in the inside of the detection cylinder (6) and fixedly connected to the upper side of the elastic membrane flap (601), and the warning mechanism (603) is threadedly connected to the top of the detection cylinder (6) and connected to the electronic bidirectional trigger switch (602) through a circuit to form a switch circuit.

Images