Precise flow control structure of pressure regulating throttling hydraulic valve forging

Abstract

This utility model discloses a precise flow control structure for a pressure-regulating throttling hydraulic valve forging. It relates to the field of hydraulic throttling valve flow control technology and aims to solve the problems of insufficient precision and inconvenience in existing hydraulic throttling valve flow control structures. Key technical features include a throttling valve body with a pressure sensor at each end. A sliding rheostat is mounted on the side surface of the valve body, with one end of the sliding rheostat's movable shaft connected to one end of the valve core. Two support frames are externally fitted and fixed to the valve body, and a detection box is mounted on each support frame. A microprocessor is installed inside the detection box, and two AD conversion modules are fixedly mounted on the bottom surface of the detection box. This achieves a flexible and convenient precise flow adjustment operation with strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic shut-off valve flow control technology, and in particular to a flow precision control structure for a pressure regulating shut-off hydraulic valve forging. Background Technology

[0002] Hydraulic throttling valves, as core control components in hydraulic systems, are primarily used to control the flow direction, flow rate, and pressure of hydraulic oil. Based on fluid mechanics principles, they achieve the cutting off, conduction, and throttling regulation of hydraulic oil through the precise fit between the valve core and valve seat.

[0003] The existing hydraulic shut-off valve flow control structure is not precise enough in controlling the flow rate, and the ease of adjustment needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a flow control structure for a pressure-regulating throttling hydraulic valve forging that enables flexible and convenient precise flow regulation, and is highly practical.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A flow precision control structure for a pressure-regulating throttling hydraulic valve forging includes a throttling valve body. A pressure sensor is installed at each end of the throttling valve body. A sliding rheostat is installed on the side surface of the throttling valve body. One end of the movable shaft of the sliding rheostat is connected to one end of the valve core of the throttling valve. Two support frames are externally sleeved and fixed to the throttling valve body. A detection box is installed on the support frame. A microprocessor is installed inside the detection box.

[0007] By adopting the above technical solution, effective differential pressure detection can be performed, and the flow rate can be calculated according to the flow rate formula, which facilitates precise control.

[0008] Furthermore, two AD conversion modules are fixedly installed on the bottom surface inside the detection box. The pressure sensor is electrically connected to the AD conversion module, and the AD conversion module is electrically connected to the microprocessor.

[0009] By adopting the above technical solution, the signal detected by the pressure sensor can be converted into data.

[0010] Furthermore, a cover is fastened to the opening of the detection box, and a mounting groove is provided on the outer surface of the cover. A digital display is fixedly installed inside the mounting groove, and the digital display is electrically connected to the microprocessor.

[0011] By adopting the above technical solution, traffic data can be displayed on a digital display, making it easier for staff to obtain results intuitively.

[0012] Furthermore, a current detection module is fixedly installed on the internal end face of the detection box. The current detection module is connected in series with the sliding rheostat and electrically connected to the microprocessor.

[0013] By adopting the above technical solution, the current detected by the current detection module can be read by the microprocessor, and the position of the valve core can be obtained, thereby obtaining the flow orifice diameter of the valve core.

[0014] Furthermore, a power supply module is fixedly installed on the internal end face of the detection box.

[0015] By adopting the above technical solution, power can be supplied for flow calculation.

[0016] Furthermore, a pipe seat is respectively fitted onto both ends of the throttling valve body, and an installation hole is provided on the side surface of the pipe seat, and the pressure sensor is installed in the installation hole.

[0017] By adopting the above technical solution, pressure sensors can be installed conveniently.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] This invention allows for the installation of pipe seats at both ends of a flow-stopping valve body, followed by the assembly of the valve body components in a designated pipeline. Two pressure sensors detect the hydraulic oil pressure at both ends of the flow-stopping valve, transmitting the pressure data to a microprocessor. The sliding rheostat can then be rotated. Since the rheostat's movable shaft is fixedly connected to one end of the valve core, and the valve core's orifice diameter is known, the flow orifice diameter varies at different angles. The valve core's rotation is synchronized with the moving end of the rheostat, and their positions correspond. Therefore, the valve core's position can be determined by the rheostat's resistance value, directly yielding the valve core's flow orifice diameter. This provides the pressure difference and orifice diameter data for the flow calculation formula. Since the remaining data are known and constant, the flow rate data can be obtained according to the flow calculation formula and displayed on a digital display. This method allows for intuitive and accurate flow rate measurement when rotating the rheostat and one end of the valve core, making adjustment flexible and convenient. Attached Figure Description

[0020] Figure 1 This is a first-view perspective view of the three-dimensional structure of this utility model;

[0021] Figure 2 This is a second perspective view of the three-dimensional structure of this utility model.

[0022] In the diagram: 1. Throttling valve body; 2. Pipe seat; 3. Pressure sensor; 4. Support frame; 5. Detection box; 6. AD conversion module; 7. Power supply module; 8. Microprocessor; 9. Current detection module; 10. Box cover; 11. Digital display; 12. Sliding rheostat. Detailed Implementation

[0023] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1 , Figure 2 The flow precision control structure of the pressure regulating type throttling hydraulic valve forging includes a throttling valve body 1. A pressure sensor 3 (GPD10) is installed at each end of the throttling valve body 1. A sliding rheostat 12 is mounted on the side surface of the throttling valve body 1. One end of the movable shaft of the sliding rheostat 12 is connected to one end of the valve core of the throttling valve. Two support frames 4 are fixedly fitted to the outside of the throttling valve body 1. A detection box 5 is mounted on the support frame 4. A microprocessor 8 is installed inside the detection box 5. A cover 10 is fastened to the opening of the detection box 5. A mounting groove is provided on the outer surface of the cover 10, and a digital display 11 is fixedly mounted inside the mounting groove. The digital display 11 is electrically connected to the microprocessor 8. Two AD conversion modules 6 are fixedly mounted on the bottom surface inside the detection box 5. The pressure sensor 3 is electrically connected to the AD conversion module 6, and the AD conversion module 6 is electrically connected to the microprocessor 8. A current detection module 9 is fixedly installed on the internal end face of the detection box 5. The current detection module 9 is connected in series with the sliding rheostat 12 and electrically connected to the microprocessor 8. Two pressure sensors 3 can be used to detect the hydraulic oil pressure at both ends of the shut-off valve, and then the oil pressure data is transmitted to the microprocessor 8. Then, the sliding rheostat 12 can be turned. Since the movable shaft of the sliding rheostat 12 is fixedly connected to one end of the valve core, and the orifice diameter of the valve core is known, the flow orifice diameter of the valve core is different at different angles. The rotation of the valve core is synchronous with the rotation of the movable end of the sliding rheostat 12, and their positions correspond. Therefore, the position of the valve core can be determined by the resistance value of the sliding rheostat 12, and the flow orifice diameter of the valve core can be directly obtained. At this time, the pressure difference and orifice diameter data in the flow calculation formula are obtained. Since the other data are known and constant, the flow calculation formula can be used to calculate the flow rate.

[0025]

[0026] Where Qv: volumetric flow rate (m³) 3 / s).

[0027] C: Flow coefficient.

[0028] ε: Expansibility coefficient (applicable to gases, ε = 1 for liquids).

[0029] d: Orifice diameter (m).

[0030] ΔP: Pressure difference (Pa).

[0031] ρ1: Upstream density of fluid (kg / m³) 3 ).

[0032] The flow rate data is obtained and displayed on the digital display 11. This allows for a direct and accurate flow rate reading when the sliding rheostat 12 and one end of the valve core are turned, making the adjustment operation flexible and convenient.

[0033] Reference Figure 1 , Figure 2 A power supply module 7 is fixedly installed on the internal end face of the detection box 5, which can provide power for the entire flow detection and display operation.

[0034] Reference Figure 1 , Figure 2 A pipe seat 2 is sleeved on both ends of the shut-off valve body 1. The side surface of the pipe seat 2 is provided with a mounting hole, and the pressure sensor 3 is installed in the mounting hole. The pipe seat 2 can be used to facilitate the installation and removal of the pressure sensor 3.

[0035] Working principle: In use, the pipe seat 2 is installed at both ends of the shut-off valve body 1, and then the assembled valve body is installed in the designated pipeline. Next, two pressure sensors 3 detect the hydraulic oil pressure at both ends of the shut-off valve. After conversion by the AD conversion module 6, the oil pressure data is transmitted to the microprocessor 8. Then, the sliding rheostat 12 can be rotated. Since the movable shaft of the sliding rheostat 12 is fixedly connected to one end of the valve core, and the orifice diameter of the valve core is known, the flow orifice diameter of the valve core is different at different angles. The rotation of the valve core is synchronous with the rotation of the movable end of the sliding rheostat 12, and their positions correspond. Therefore, the flow can be controlled by rotating the sliding rheostat 12. The position of the valve core is determined by the resistance value of the sliding rheostat 12. The change in the resistance value of the sliding rheostat 12 can effectively adjust the value of the current detection module 9. The microprocessor 8 can effectively read the value of the current detection module 9 and calculate the orifice size based on the read value, thereby directly obtaining the flow orifice size of the valve core. At this time, the pressure difference and orifice size data in the flow calculation formula are obtained. Since the other data are known to be constant, the flow data can be obtained according to the flow calculation formula and displayed on the digital display 11. This allows for intuitive and accurate flow value acquisition when the sliding rheostat 12 and one end of the valve core are turned, making the adjustment operation flexible and convenient.

[0036] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A flow precision control structure for a pressure-regulating throttling hydraulic valve forging, comprising a throttling valve body (1), characterized in that: A pressure sensor (3) is provided at each end of the throttling valve body (1). A sliding rheostat (12) is installed on the side surface of the throttling valve body (1). One end of the movable shaft of the sliding rheostat (12) is connected to one end of the valve core of the throttling valve. Two support frames (4) are fixedly sleeved on the outside of the throttling valve body (1). A detection box (5) is installed on the support frame (4). A microprocessor (8) is installed inside the detection box (5).

2. The flow precision control structure of the pressure-regulated on-off hydraulic valve forging according to claim 1, characterized in that: Two AD conversion modules (6) are fixedly installed on the bottom surface inside the detection box (5). The pressure sensor (3) is electrically connected to the AD conversion module (6), and the AD conversion module (6) is electrically connected to the microprocessor (8).

3. The flow precision control structure of the pressure-regulated on-off hydraulic valve forging according to claim 1, characterized in that: The opening of the detection box (5) is covered with a cover (10). The outer surface of the cover (10) is provided with a mounting groove, and a digital display (11) is fixedly installed inside the mounting groove. The digital display (11) is electrically connected to the microprocessor (8).

4. The flow precision control structure of the pressure-regulating throttling hydraulic valve forging according to claim 1, characterized in that: A current detection module (9) is fixedly installed on the inner end face of the detection box (5). The current detection module (9) is connected in series with the sliding rheostat (12) and electrically connected with the microprocessor (8).

5. The flow precision control structure of the pressure-regulated on-off hydraulic valve forging according to claim 1, characterized in that: A power supply module (7) is fixedly installed on the internal end face of the detection box (5).

6. The flow precision control structure of the pressure-regulated on-off hydraulic valve forging according to claim 1, characterized in that: A pipe seat (2) is sleeved on both ends of the shut-off valve body (1). The side surface of the pipe seat (2) is provided with an installation hole, and the pressure sensor (3) is installed in the installation hole.

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