A novel exchanger leak detection device

Abstract

The utility model discloses a novel exchanger leak detection device relates to exchanger detection technical field, including box body and exchanger body, and exchanger body places inside the box body, and the upper end of exchanger body is installed three -way joint, and the lower end of exchanger body is installed taper joint, and the inside installation of box body has control box and the inflation subassembly, and the inflation subassembly is used to the inflation to exchanger body, and the remaining two ends of three -way joint are connected with pressure gauge and flowmeter respectively, and the gas pipeline is installed between inflation subassembly and flowmeter. Through servo closed loop control system, permanent -magnetic piston rod and magnetic field cooperate, thereby generating the effect of up and down movement, through this mode, the exchanger body is ventilated, and finally reaches the required pressure value.

Description

Technical Field

[0001] This utility model relates to the field of switch detection technology, and in particular to a novel switch leakage detection device. Background Technology

[0002] A heat and moisture exchanger is a device used in ventilator therapy. Its main function is to recover the moisture and heat exhaled by the patient within the ventilator tubing and then re-expose it to the patient, thereby reducing the loss of moisture and heat during respiration. The principle of a heat and moisture exchanger is to regulate air temperature and humidity by utilizing the heat absorption and release properties of gases. When a person breathes, they inhale fresh air, heating and humidifying it, and then exhale, expelling heat and water vapor. A heat and moisture exchanger can capture the exhaled heat and water vapor and transfer it to the inhaled fresh air, preheating and humidifying it. This way, the body does not feel cold and dry when inhaling fresh air, achieving a comfortable breathing state.

[0003] Existing exchanger leak detection devices use air pumps to deliver gas when testing some common parameters. This is limited by the accuracy of the air pump, leading to inaccurate results. Furthermore, it is difficult to accurately measure detailed parameters such as the micro-flow characteristics and flow output changes inside the exchanger. This results in the final test results being either unqualified or qualified due to equipment problems. Utility Model Content

[0004] The purpose of this application is to provide a novel exchanger leakage detection device, which uses a servo closed-loop control system to coordinate a permanent magnet piston rod with a magnetic field, thereby producing an up-and-down movement effect. In this way, air is introduced into the exchanger body to ultimately achieve the required pressure value.

[0005] To achieve the above objectives, this application provides the following technical solution: a novel exchanger leakage detection device, comprising a housing and an exchanger body, wherein the exchanger body is placed inside the housing, and a T-joint is installed at the upper end of the exchanger body, and a tapered joint is installed at the lower end of the exchanger body. A control box and an air-inflating assembly are installed inside the housing, the air-inflating assembly being used to inflate the exchanger body, and a pressure gauge and a flow meter are respectively connected to the other two ends of the T-joint, and a gas pipeline is installed between the air-inflating assembly and the flow meter.

[0006] Furthermore, the air-inflating assembly includes a housing, an electromagnetic coil is embedded inside the housing, the air outlet at the bottom of the housing is connected to a gas pipeline, a permanent magnet piston rod is slidably inserted into the top of the housing, a piston is fixed at the bottom end of the permanent magnet piston rod, and the piston slides in cooperation with the inner wall of the housing.

[0007] Furthermore, a second ventilation hole is provided on the top of the outer casing.

[0008] Furthermore, the piston has two first ventilation holes, and one-way valves are installed on both the gas pipeline and the first ventilation holes.

[0009] Furthermore, a support frame is fixed to the outside of the outer shell, and the support frame is fixedly installed inside the box.

[0010] Furthermore, the open side of the enclosure is hinged with a switch door, and a display control panel is installed on the switch door. The display control panel is electrically connected to the control box.

[0011] In summary, the technical effects and advantages of this utility model are as follows: 1. In this utility model, the permanent magnet piston rod and the magnetic field are coordinated by a servo closed-loop control system to produce an up-and-down movement effect. In this way, air is introduced into the heat exchanger body to finally achieve the required pressure value.

[0012] 2. In this utility model, the volume of the ejected gas is determined by the result obtained by the servo, and the flow rate is calculated by the internal counter of the control box. The average is taken by comparing the flow rate with that of the flow meter, so that the result is more accurate. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a novel switch leakage detection device according to an embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of the novel switch leakage detection device in the embodiments of this application; Figure 3 This is a schematic diagram of the overall structure of the air-inflating component in the embodiments of this application; Figure 4 This is a partial structural schematic diagram of the air-inflating component in an embodiment of this application.

[0015] In the diagram: 1. Housing; 2. Exchanger body; 3. Control box; 4. T-connector; 5. Pressure gauge; 6. Flow meter; 7. Gas pipeline; 8. Outer shell; 9. Electromagnetic coil; 10. Permanent magnet piston rod; 11. Piston; 12. First ventilation port; 13. Second ventilation port; 14. Support frame; 15. Opening and closing door; 16. Display and control panel. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example: Reference Figure 1-4 The novel heat exchanger leakage detection device shown includes a housing 1 and a heat exchanger body 2. The heat exchanger body 2 is placed inside the housing 1, and a three-way connector 4 is installed at the upper end of the heat exchanger body 2. A tapered connector is installed at the lower end of the heat exchanger body 2 for sealing the lower end of the heat exchanger body 2. A control box 3 and an air pumping assembly are installed inside the housing 1. The control box 3 is controlled by a PLC as the main controller. The air pumping assembly is used to pump air into the heat exchanger body 2. The other two ends of the three-way connector 4 are respectively connected to a pressure gauge 5 and a flow meter 6. A gas pipeline 7 is installed between the air pumping assembly and the flow meter 6. A switch door 15 is hinged to the open side of the housing 1. A display control panel 16 is installed on the switch door 15. The display control panel 16 is electrically connected to the control box 3, and the device can be better controlled with the help of the display control panel 16.

[0018] The air-inflating assembly includes a housing 8, with an electromagnetic coil 9 embedded inside. The air outlet at the bottom of the housing 8 is connected to the gas pipeline 7. A permanent magnet piston rod 10 is slidably inserted into the top of the housing 8, and a piston 11 is fixed at the bottom end of the permanent magnet piston rod 10. The piston 11 slides against the inner wall of the housing 8. Two first ventilation holes 12 are reserved on the piston 11. One-way valves are installed on both the gas pipeline 7 and the first ventilation holes 12, so that the gas pipeline 7 can only send air from the housing 8 to the flow meter 6 and cannot flow backward. The first ventilation holes 12 can only vent air downward to the piston 11. A second ventilation hole 13 is opened at the top of the housing 8 to ensure the internal and external pressure balance of the air pressure above the piston 11 inside the housing 8. A support frame 14 is fixed to the outside of the housing 8 and is fixedly installed inside the housing 1.

[0019] Working principle of this utility model: First, open the switch door 15, then connect the switch body 2 to the... Figure 2 At the indicated location, the air pumping component is operated via the display control panel 16 for the experiment. Since the permanent magnet piston rod 10 is a permanent magnet push rod, and the housing 8 contains an electromagnetic coil 9, the piston moves up and down by controlling the magnetic field generated by the internal current, thereby pumping air. During pumping, the internal pressure is controlled to reach 7 kPa ± 0.35 kPa. Based on the feedback from the pressure gauge 5, the amount of air pumped by the permanent magnet piston rod 10 is controlled. The flow rate recorded by the flow meter 6 is the required gas flow rate. The volume of gas pumped is determined by the result obtained by the servo. Combined with the internal counter of the control box 3, the flow rate is calculated. By comparing the flow rate with that of the flow meter 6 and taking the average, the result is more accurate.

[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel exchanger leakage detection device, comprising a housing (1) and an exchanger body (2), characterized in that: The exchanger body (2) is placed inside the housing (1), and a three-way connector (4) is installed at the upper end of the exchanger body (2). A tapered connector is installed at the lower end of the exchanger body (2). A control box (3) and an air pumping assembly are installed inside the housing (1). The air pumping assembly is used to pump air into the exchanger body (2). The other two ends of the three-way connector (4) are respectively connected to a pressure gauge (5) and a flow meter (6). A gas pipeline (7) is installed between the air pumping assembly and the flow meter (6).

2. The novel exchanger leakage detection device according to claim 1, characterized in that: The air pump assembly includes a housing (8), an electromagnetic coil (9) is embedded inside the housing (8), the air outlet at the bottom of the housing (8) is connected to the gas pipeline (7), a permanent magnet piston rod (10) is slidably inserted into the top of the housing (8), a piston (11) is fixed at the bottom end of the permanent magnet piston rod (10), and the piston (11) slides in cooperation with the inner wall of the housing (8).

3. The novel exchanger leakage detection device according to claim 2, characterized in that: The top of the outer casing (8) is provided with a second ventilation hole (13).

4. The novel exchanger leakage detection device according to claim 2, characterized in that: The piston (11) has two first ventilation holes (12) reserved on it, and one-way valves are installed on the gas pipeline (7) and the first ventilation holes (12).

5. A novel exchanger leakage detection device according to claim 2, characterized in that: A support frame (14) is fixed to the outside of the outer shell (8), and the support frame (14) is fixedly installed inside the box (1).

6. The novel exchanger leakage detection device according to claim 1, characterized in that: The box (1) has a hinged door (15) on its open side, and a display control screen (16) is installed on the door (15). The display control screen (16) is electrically connected to the control box (3).

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