Combustible refrigerant detection system testing device

Abstract

The utility model discloses a combustible refrigerant detection system testing device which comprises a testing box body, an explosion-proof box body is arranged in the testing box body, a testing cavity used for containing a tested sample is arranged in the explosion-proof box body, the explosion-proof box body is connected with a testing liquid mixing pressure tank assembly, and combustible refrigerant testing liquid is introduced into the explosion-proof box body; the top of the testing cavity is connected with an air outlet pipe leading out of the testing box body, the side portion of the testing cavity is connected with an air inlet pipe, one side of the testing cavity is provided with an explosion venting opening, and an explosion-proof valve installed on the outer side of the explosion venting opening is arranged outside the explosion-proof box body. The utility model discloses a combustible refrigerant detection system testing device with an explosion-proof function.

Description

Technical Field

[0001] The utility model relates to the technical field of installation equipment, in particular to a testing device for a flammable refrigerant detection system. Background Art

[0002] Refrigerants are everywhere in modern life, from household refrigerators, household air conditioners, household cars, etc. to industrial cold storage and medical drug refrigeration. Most types of refrigerants are flammable and toxic; these refrigerants that improve our quality of life are potentially dangerous; for this reason, many refrigerant detection systems have emerged, which can detect refrigerant leaks and alarm people before causing safety problems. The reliability of the refrigerant (coolant) detection system is related to the safety of production and life, so it is necessary to do a lot of tests on the refrigerant sensor to verify safety and reliability. The flammable refrigerant (coolant) detection system provides a safe and reliable test environment for test researchers to analyze the performance of refrigerant sensors.

[0003] Therefore, it is urgent to develop a flammable refrigerant detection system test device with explosion-proof function. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art and provides a flammable refrigerant detection system testing device with an explosion-proof function.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a test device for a flammable refrigerant detection system, comprising a test box body, an explosion-proof box body is arranged in the test box body, a test cavity for accommodating a sample to be tested is arranged in the explosion-proof box body, the explosion-proof box body is connected to a test liquid mixing pressure tank assembly and introduces a flammable refrigerant test liquid; the top of the test cavity is connected to an air outlet pipe leading out of the test box body, the side of the test cavity is connected to an air inlet pipe, one side of the test cavity is provided with an explosion vent, and an explosion-proof valve installed on the outside of the explosion vent is arranged outside the explosion-proof box body.

[0006] In a preferred embodiment of the utility model, the explosion-proof valve includes a mounting seat installed in the test box body, and the mounting seat is driven to be provided with a docking seat that can be telescopically displaced relative to the explosion-relief port of the test chamber, and the docking seat is provided with an explosion-relief hole that is docked with the explosion-relief port; the explosion-relief hole is connected to the through hole of the mounting seat through a bellows and is led out of the test box body through an explosion-relief pipeline;

[0007] A blocking explosion-relief plate capable of elastically pressing the explosion-relief opening is arranged in the explosion-relief hole, and a flow discharge gap is reserved between the outer periphery of the blocking explosion-relief plate and the inner wall of the explosion-relief hole.

[0008] In a preferred embodiment of the utility model, a circle of mounting convex rings is provided on the hole wall of the explosion-relief hole, and a plurality of guide rods are movably penetrated on the mounting convex ring, one end of the guide rods is connected to the blocking explosion-relief plate, and the other end of the guide rods is movably penetrated through the through-holes of the mounting convex ring and is locked by the large end limit, and an elastic part is elastically abutted between the mounting convex ring and the blocking explosion-relief plate; and a leakage gap is reserved between the blocking explosion-relief plate and the inner wall of the explosion-relief hole and the mounting convex ring.

[0009] In a preferred solution of the utility model, an air inlet pipe for introducing clean air flow is connected to the bottom of the test chamber.

[0010] In a preferred embodiment of the utility model, the test liquid mixing pressure tank assembly includes a mixing pressure tank arranged on a mounting frame, wherein the mixing pressure tank contains flammable refrigerant test liquid, and the mixing pressure tank is connected to the test cavity through a test liquid pipeline.

[0011] In a preferred solution of the utility model, the air outlet pipe, the air inlet pipe, the air intake pipe and the test liquid pipeline are respectively provided with on-off valves for on-off.

[0012] In a preferred solution of the utility model, a push-up mechanism is arranged on the mounting seat, and a push rod of the push-up mechanism is drivingly connected to the docking seat.

[0013] The utility model solves the defects existing in the background technology:

[0014] The utility model discloses a flammable refrigerant detection system test device with explosion-proof function; an explosion-proof box body for testing is built into a test box body, and an explosion-proof valve is provided between the explosion-proof box body and the test box body, thereby realizing explosion-proof protection for the explosion-proof box body.

[0015] The explosion-proof valve is provided with a docking seat which is driven and installed on the mounting seat, so as to facilitate docking and disengagement with the explosion-relief port on the explosion-proof box.

[0016] The explosion-proof valve has a built-in sealing and explosion-proof plate in the explosion-proof hole of its docking seat, which can elastically resist and seal the explosion-proof hole. Through the elastic prefabrication of the elastic part itself, it is convenient to achieve explosion-proof protection for the test chamber when the set internal pressure is exceeded. In addition, the outgoing gas is led out through the pipeline to improve the detection cleanliness of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model;

[0019] Figure 2It is a schematic diagram of the structure in which the explosion-proof box body is installed in the storage cavity in the preferred embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of an explosion-proof valve in a preferred embodiment of the utility model;

[0021] In the figure, 1-test box body, 11-storage cavity, 12-top cover, 13-air outlet, 14-air inlet, 15-door panel; 2-explosion-proof box body, 21-test cavity; 22-air outlet pipe, 23-air inlet pipe, 24-explosion vent; 25-air inlet pipe, 3-explosion-proof valve, 30-mounting seat, 31-pushing mechanism, 32-blocking explosion venting plate, 33-elastic member, 34-guide rod, 35-docking seat; 36-explosion venting hole, 37-mounting convex ring, 38-bellows, 4-tested sample, 5-test liquid mixing pressure tank assembly, 51-mixing pressure tank, 52-mounting frame, 53-test liquid pipeline, 6-on-off valve DETAILED DESCRIPTION

[0022] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] like Figure 1-Figure 2 As shown, a flammable refrigerant detection system test device includes a test box body 1, the test box body 1 includes a bottom plate, and a surrounding plate arranged on the bottom plate, and a top cover 12 is arranged on the surrounding plate. The bottom plate, the surrounding plate and the top cover 12 are combined to form a storage chamber 11, and an air outlet 13 is arranged on the top cover 12, and an air inlet 14 is arranged on the surrounding plate. A door panel 15 that can be relatively opened and closed is arranged on the surrounding plate, and the arrangement of the door panel 15 facilitates the realization of the pick-up and placement operation and the disassembly and maintenance. An explosion-proof box body 2 is arranged in the test box body 1, and a test chamber 21 for accommodating a sample 4 to be tested is arranged in the explosion-proof box body 2. The explosion-proof box body 2 is connected to a test liquid mixing pressure tank assembly 5 and introduces a flammable refrigerant test liquid. The test liquid mixing pressure tank assembly 5 includes a mixing pressure tank 51 arranged on a mounting frame 52, and a flammable refrigerant test liquid is arranged in the mixing pressure tank 51, and the mixing pressure tank 51 is connected to the test chamber 21 through a test liquid pipeline 53. The top of the test chamber 21 is connected with an air outlet pipe 22, which is led out through the air outlet 13 of the test box body 1. The side of the test chamber 21 is connected with an air inlet pipe 23, which is introduced through the air inlet 14 of the test box body 1. The bottom of the test chamber 21 is connected with an air inlet pipe 25 for introducing clean airflow. An explosion vent 24 is provided on one side of the test chamber 21, and an explosion-proof valve 3 installed on the outside of the explosion vent 24 is provided outside the explosion-proof box body 2. Among them, the mixing pressure tank 51 directly adopts the mixing pressure tank in the prior art. The flammable refrigerant test liquid used in this embodiment is a flammable refrigerant and lubricating grease.

[0024] Specifically, Figure 1-Figure 3 As shown, the explosion-proof valve 3 includes a mounting seat 30 installed in the test box body 1, and the mounting seat 30 is driven to be provided with a docking seat 35 that can telescopically move relative to the explosion venting port 24 of the test chamber 21. A push mechanism 31 is provided on the mounting seat 30, and a push rod of the push mechanism 31 is drivingly connected to the docking seat 35. The docking seat 35 is provided with an explosion venting hole 36 that docks with the explosion venting port 24; the explosion venting hole 36 is connected to the through hole of the mounting seat 30 through a bellows 38 and is led out of the test box body 1 through the explosion venting pipeline.

[0025] Further, such as Figure 3 As shown, a plugging explosion-relief plate 32 capable of elastically pressing against the explosion-relief port 24 is provided in the explosion-relief hole 36; and a leakage gap is reserved between the outer periphery of the plugging explosion-relief plate 32 and the inner wall of the explosion-relief hole 36. Furthermore, a circle of mounting convex rings 37 are provided on the hole wall of the explosion-relief hole 36, and a plurality of guide rods 34 are movably penetrated on the mounting convex rings 37, one end of the guide rods 34 is connected to the plugging explosion-relief plate 32, and the other end of the guide rods 34 is movably penetrated through the through holes of the mounting convex rings 37 and locked by the large end limit, and an elastic member 33 elastically resting between the mounting convex rings 37 and the plugging explosion-relief plate 32 is provided on the outer sleeve of the guide rods 34; and a leakage gap is reserved between the plugging explosion-relief plate 32 and the inner wall of the explosion-relief hole 36 and the mounting convex rings 37.

[0026] Specifically, Figure 1-Figure 2 As shown, the air outlet 13, the air inlet 14, the air outlet pipe 22, the air inlet pipe 23, the air inlet pipe 25, and the test liquid pipeline 53 are respectively provided with an on-off valve 6 for on-off. In this embodiment, the on-off valve 6 adopts a product in the prior art, and the model selection of the on-off valve 6 is not listed one by one here.

[0027] Working principle:

[0028] like Figure 1-Figure 3As shown, a test device for a flammable refrigerant detection system with explosion-proof function is provided; by installing an explosion-proof box body for testing in the test box body, and by providing an explosion-proof valve between the explosion-proof box body and the test box body, explosion-proof protection of the explosion-proof box body is achieved. The explosion-proof valve is provided with a docking seat driven and installed on the mounting seat, so as to facilitate docking and detachment with the explosion-proof vent on the explosion-proof box. The explosion-proof valve has a built-in plugging and venting plate that can elastically abut against and plug the explosion-proof vent in the explosion-proof hole of its docking seat. Through the elastic prefabrication of the elastic part itself, it is convenient to achieve explosion-proof protection of the test chamber when the set internal pressure is exceeded. In addition, the gas rushing out is led out through the pipeline to improve the detection cleanliness of the equipment. At the same time, the air inlet pipe provided at the bottom is convenient for injecting the required refrigerant gas so as to obtain the required gas concentration; the experimental gas inlet is filled with fluororubber material, and there is a sealing bolt on the outside; after the gas is injected, the sealing bolt is tightened to ensure the sealing, and no air will flow into the airtight test box body through the pinhole gap.

[0029] Based on the ideal embodiment of the utility model, through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the invention. The technical scope of the invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A flammable refrigerant detection system test device, comprising a test box body (1), wherein an explosion-proof box body (2) is arranged inside the test box body (1), wherein a test cavity (21) for receiving a test sample (4) is arranged inside the explosion-proof box body (2), wherein the explosion-proof box body (2) is connected to a test liquid mixing pressure tank assembly (5) and a flammable refrigerant test liquid is introduced therein; characterized in that: The top of the test chamber (21) is connected to an air outlet pipe (22) leading out of the test box body (1), the side of the test chamber (21) is connected to an air inlet pipe (23), one side of the test chamber (21) is provided with an explosion vent (24), and the explosion-proof box body (2) is provided with an explosion-proof valve (3) installed outside the explosion vent (24).

2. A flammable refrigerant detection system test device according to claim 1, characterized in that: The explosion-proof valve (3) comprises a mounting seat (30) mounted in the test box body (1), and a docking seat (35) is driven to be arranged on the mounting seat (30) and capable of telescopic displacement relative to the explosion relief opening (24) of the test chamber (21), and an explosion relief hole (36) is arranged on the docking seat (35) and is docked with the explosion relief opening (24); the explosion relief hole (36) is connected to the through hole of the mounting seat (30) through a bellows (38) and is led out of the test box body (1) through an explosion relief pipeline; A blocking explosion relief plate (32) capable of elastically pressing against the explosion relief opening (24) is arranged in the explosion relief hole (36), and a flow discharge gap is reserved between the outer periphery of the blocking explosion relief plate (32) and the inner wall of the explosion relief hole (36).

3. A flammable refrigerant detection system test device according to claim 2, characterized in that: A circle of mounting convex rings (37) are arranged on the hole wall of the explosion relief hole (36), and a plurality of guide rods (34) are movably penetrated on the mounting convex ring (37), one end of the guide rod (34) is connected to the blocking explosion relief plate (32), and the other end of the guide rod (34) is movably penetrated through the through hole of the mounting convex ring (37) and is locked by the large end limit, and an elastic member (33) is elastically abutted between the mounting convex ring (37) and the blocking explosion relief plate (32) on the outer sleeve of the guide rod (34); and a flow discharge gap is reserved between the blocking explosion relief plate (32) and the inner wall of the explosion relief hole (36) and the mounting convex ring (37).

4. A flammable refrigerant detection system test device according to claim 3, characterized in that: The bottom of the test chamber (21) is connected to an air inlet pipe (25) for introducing a clean air flow.

5. A flammable refrigerant detection system test device according to claim 4, characterized in that: The test liquid mixing pressure tank assembly (5) comprises a mixing pressure tank (51) arranged on a mounting frame (52), wherein a flammable refrigerant test liquid is arranged in the mixing pressure tank (51), and the mixing pressure tank (51) is connected to the test chamber (21) via a test liquid pipeline (53).

6. A flammable refrigerant detection system test device according to claim 5, characterized in that: The air outlet pipe (22), the air inlet pipe (23), the air intake pipe (25), and the test liquid pipeline (53) are respectively provided with on-off valves (6) for opening and closing.

7. A flammable refrigerant detection system test device according to claim 3, characterized in that: The mounting seat (30) is provided with a pushing mechanism (31), and a push rod of the pushing mechanism (31) is drivingly connected to the docking seat (35).

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