Linear differential transformer for detecting opening degree of valve

Abstract

The utility model discloses a linear differential transformer for detecting the opening degree of a valve, and relates to the field of automobile valve detection. Comprising a valve installation tool, a valve, an iron core, a coil framework, a signal converter and a display instrument. One end of the valve body is connected into the valve installation tool, the other end of the valve body is connected with the iron core, the iron core is located in the valve installation tool, the other end of the iron core is connected with the coil framework, the end, connected with the iron core, of the coil framework is connected with the outer face of the valve installation tool at the same time, and the valve installation tool is located in the valve installation tool. One end of the signal converter is connected with the display instrument, and the other end of the signal converter is connected with the other end, connected with the iron core, of the coil framework; the valve opening degree change can be quickly reflected, the measuring range is wide, the precision is high, the installation is convenient, the durability is realized, and the long-term continuous use can be realized in the detection process.

Description

Technical Field

[0001] This invention relates to the field of automotive valve testing, and more specifically to a linear differential transformer for detecting valve opening. Background Technology

[0002] Currently, oil filter modules on the market are becoming increasingly complex and highly integrated. They not only perform oil filtration but also integrate fluid management functions, incorporating numerous valves such as safety valves, thermostats, service valves, and pressure relief valves. Because these valves are integrated within the module and cannot be directly measured, assessing and measuring their opening degree and actual operating status under different engine conditions has become a challenging problem.

[0003] Therefore, it is necessary to provide a linear differential transformer for detecting valve opening to solve the above problems. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a linear differential transformer for detecting valve opening, comprising: a valve mounting fixture, a valve, an iron core, a coil frame, a signal converter, and a display instrument; one end of the valve body is connected to the valve mounting fixture, and the other end is connected to the iron core, with the iron core located within the valve mounting fixture; the other end of the iron core is connected to the coil frame; one end of the coil frame connected to the iron core is simultaneously connected to the outer surface of the valve mounting fixture; one end of the signal converter is connected to the display instrument, and the other end is connected to the other end of the coil frame connected to the iron core.

[0005] Furthermore, preferably, the valve mounting fixture includes:

[0006] The oil inlet is located on the outer end face of the valve mounting fixture;

[0007] The oil outlet is positioned parallel to the oil inlet;

[0008] A valve body mounting hole is provided on the valve mounting fixture, located on the vertical end face of the end face where the oil inlet and the oil outlet are located, and connected to the oil inlet and the oil outlet.

[0009] Furthermore, preferably, the coil frame includes:

[0010] The initial winding coil is disposed inside the coil frame and connected to the signal converter;

[0011] The secondary winding coil is symmetrically arranged inside the coil frame with the initial winding coil and is connected to the signal converter.

[0012] Furthermore, as a preferred embodiment, the valve is fastened to the iron core by a threaded structure, and a spring in its natural state is installed on the outside of the iron core. The iron core and the spring are placed together into the valve body mounting hole.

[0013] Furthermore, as a preferred embodiment, the coil frame is connected to the valve mounting fixture and the spring is compressed via a threaded structure, and the iron core is installed inside the coil frame.

[0014] Compared with the prior art, the present invention provides a linear differential transformer for detecting valve opening degree, which has the following beneficial effects:

[0015] In this embodiment of the invention, by setting the valve mounting fixture, the oil entering through the oil inlet can push the iron core to move laterally, and the lateral displacement of the iron core in the coil frame achieves the effect of cutting magnetic field lines, thereby generating a voltage that directly reflects the opening degree of the valve. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a linear differential transformer for detecting valve opening.

[0017] Figure 2 A schematic diagram of a valve mounting fixture for a linear differential transformer used to detect valve opening.

[0018] Figure 3 A schematic diagram of the coil frame of a linear differential transformer for detecting valve opening.

[0019] In the diagram: 1. Valve installation fixture; 11. Oil inlet; 12. Oil outlet; 13. Valve body mounting hole; 2. Valve; 3. Iron core; 4. Coil frame; 41. Initial winding coil; 42. Secondary winding coil; 5. Signal converter; 6. Display instrument. Detailed Implementation

[0020] Please see Figures 1-3 In this embodiment of the invention, a linear differential transformer for detecting valve opening includes:

[0021] The system comprises a valve mounting fixture 1, a valve 2, an iron core 3, a coil frame 4, a signal converter 5, and a display instrument 6. One end of the valve body 2 is connected to the valve mounting fixture 1, and the other end is connected to the iron core 3, with the iron core 3 located within the valve mounting fixture 1. The other end of the iron core 3 is connected to the coil frame 4, and the end of the coil frame 4 connected to the iron core 3 is simultaneously connected to the outer surface of the valve mounting fixture 1. One end of the signal converter 5 is connected to the display instrument 6, and the other end is connected to the coil frame 4 at the other end connected to the iron core 3.

[0022] In this embodiment, as Figure 2 The valve installation fixture 1 includes:

[0023] Oil inlet 11 is located on the outer end face of the valve mounting fixture 1;

[0024] The oil outlet 12 is arranged parallel to the oil inlet 11;

[0025] The valve body mounting hole 13 is provided on the valve mounting fixture 1, located on the vertical end face of the end face where the oil inlet 11 and the oil outlet 12 are located, and is connected to the oil inlet 11 and the oil outlet 12.

[0026] In this embodiment, as Figure 3 The coil frame 4 includes:

[0027] The initial winding coil 41 is disposed inside the coil frame 4 and connected to the signal converter 5;

[0028] The secondary winding coil 42 is symmetrically arranged inside the coil frame 4 with the initial winding coil 41 and is connected to the signal converter 5.

[0029] It should be noted that the valve 2 is fastened to the iron core 3 by a threaded structure, and a spring in its natural state is installed on the outside of the iron core 3. The iron core 3 and the spring are placed together in the valve body mounting hole 13.

[0030] It should be noted that the coil frame 4 is connected to the valve mounting fixture 1 via a threaded structure and compresses the spring, and the iron core 3 is installed inside the coil frame 4.

[0031] In a preferred embodiment, when the valve 2 is closed, the iron core 3 and the spring remain in their natural state while mounted in the valve mounting fixture 1. Oil is filled into the oil inlet 11, but it does not flow into the valve body mounting hole 13. When the valve 2 opens to a certain extent, the oil flows from the oil inlet 11 into the valve body mounting hole 13. Because the coil frame 4 is fixedly connected to the valve mounting fixture 1, and the valve 2 is connected to the iron core 3, the speed at which the oil flows into the valve body mounting hole 13 is positively correlated with the opening degree of the valve 2. The oil flows into the valve body mounting hole 13. The iron core 3 is driven to move linearly. The speed and distance of the movement are positively correlated with the rate of change and the size of the valve 2 opening. The other end of the iron core 3 is located inside the coil frame 4. Since the initial winding coil 41 generates a magnetic field in the coil frame 4, the displacement direction of the iron core 3 and the direction of the magnetic field inside the coil frame 4 form a cutting magnetic field line, generating electromagnetic induction. Therefore, an induced current is generated in the secondary winding coil 42, which in turn forms a voltage difference. The signal converter 5 converts the relevant voltage signal and displays the reading on the display instrument 6, reflecting the opening of the valve 2.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A linear variable differential transformer for detecting valve opening, characterized by: The utility model relates to a valve installation tool (1), a valve (2), a core (3), a coil framework (4), a signal converter (5), a display instrument (6), one end of the valve (2) is connected in the valve installation tool (1), the other end is connected the core (3), and the core (3) is in the valve installation tool (1), the other end of the core (3) is connected with the coil framework (4), one end of the coil framework (4) is connected with the external surface of the valve installation tool (1) simultaneously with the core (3), one end of the signal converter (5) is connected the display instrument (6), and the other end is connected with the coil framework (4) the other end of the core (3) is connected. The valve installation tool (1) comprises:

2. A linear variable differential transformer for detecting valve opening degree according to claim 1, characterized in that: An oil inlet (11) is arranged on one external surface of the valve installation tool (1); An oil outlet (12) is arranged parallel to the oil inlet (11); A valve body mounting hole (13) is arranged on the valve installation tool (1) and located on the vertical surface of the end surface where the oil inlet (11) and the oil outlet (12) are located, and is connected with the oil inlet (11) and the oil outlet (12). The coil framework (4) comprises:

3. A linear variable differential transformer for detecting valve opening degree according to claim 1, characterized in that: An initial winding coil (41) is arranged inside the coil framework (4) and is connected with the signal converter (5); A secondary winding coil (42) is symmetrically arranged inside the coil framework (4) with the initial winding coil (41) and is connected with the signal converter (5). The valve (2) is fastened with the core (3) through a threaded structure, and the core (3) is externally provided with a spring in a natural state, and the core (3) is placed into the valve body mounting hole (13) together with the spring.

4. A linear variable differential transformer for detecting valve opening degree according to claim 2, characterized in that: The coil framework (4) is connected with the valve installation tool (1) through a threaded structure and compresses the spring, and the core (3) is mounted into the coil framework (4).

5. A linear variable differential transformer for detecting valve opening according to claim 4, characterized in that: ​

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