Pressure valve calibrator reducing device

Abstract

The utility model discloses a pressure valve calibrator reducing device, which comprises an upper connecting assembly, a lower connecting assembly and a pressure valve body, the upper connecting assembly comprises an upper fixing head, the top end of the upper fixing head is fixedly connected with a connecting head, the bottom end of the upper fixing head is provided with a threaded connecting port, the lower connecting assembly comprises a lower fixing head, and the connecting head is fixedly connected with the threaded connecting port. The top end of the lower fixing head is fixedly connected with a first threaded head, the first threaded head is in threaded connection with the threaded connector, the bottom end of the lower fixing head is fixedly connected with a second threaded head, the second threaded head is in threaded connection with the pressure valve body, and a first sealing ring is clamped in the threaded connector. According to the pressure valve calibrator, the first fastening nut and the second fastening nut are unscrewed, and then the pressure valve body and the upper fixing head are detached from the second thread head and the first thread head, so that the lower connecting assembly matched with the caliber of the pressure valve body can be replaced, and the diameter change of the pressure valve calibrator is realized.

Description

Technical Field

[0001] This utility model relates to the field of pressure valve calibrator connection technology, and in particular to a pressure valve calibrator diameter changing device. Background Technology

[0002] A pressure valve calibrator is a specialized device used to test the performance of pressure valves. Also known as a pressure calibration bench, it is mainly used to verify key parameters of pressure valves such as opening pressure, closing pressure, and sealing performance. Its core function is to evaluate the operating accuracy and reliability of the valve under test by simulating pressure changes under real working conditions.

[0003] Currently, in the use of existing pressure valve calibrators, the pipe joints between the pressure valve and the calibrator are connected by connectors. However, due to the inconsistent diameters of the connection points for different types of pressure valves, and the inconvenience of replacing the connectors connected to the calibrator, the calibrator's versatility for calibrating different types of pressure valves is reduced. Therefore, in order to advance industry technology, better realize the connection function between the pressure valve and the calibrator, and improve the core technology competitiveness, this application proposes a new implementation scheme that differs from the existing pressure valve and calibrator connection structure. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing pressure valve calibrators have reduced universality for calibrating different types of pressure valves because the diameters of the connection points are inconsistent and the connectors are difficult to replace. Therefore, this invention proposes a pressure valve calibrator diameter-changing device.

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

[0006] A pressure valve calibrator reducing device includes an upper connecting assembly, a lower connecting assembly, and a pressure valve body. The upper connecting assembly includes an upper fixing head, a connecting head fixedly connected to the top of the upper fixing head, and a threaded connection port provided at the bottom of the upper fixing head. The lower connecting assembly includes a lower fixing head, a first threaded head fixedly connected to the top of the lower fixing head, the first threaded head being threadedly connected to the threaded connection port, and a second threaded head fixedly connected to the bottom of the lower fixing head, the second threaded head being threadedly connected to the pressure valve body.

[0007] Furthermore, a first sealing ring is engaged inside the threaded connection port, and one end of the first threaded head contacts the first sealing ring.

[0008] Furthermore, a second sealing ring is fixedly connected to the bottom end of the second threaded head, and the second sealing ring is in contact with the pressure valve body.

[0009] Furthermore, the outer wall of the first threaded head is threaded with a first fastening nut, which contacts one end of the upper fixed head.

[0010] Furthermore, the outer wall of the second threaded head is threaded with a second fastening nut, which contacts the pressure valve body.

[0011] Furthermore, a connecting tube head is snapped into the top of the connector.

[0012] Furthermore, the top end of the connecting pipe head is threadedly connected to the valid tester connecting pipe.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. By loosening the first and second fastening nuts, the pressure valve body and the upper fixing head are removed from the second and first threaded heads to replace the lower connecting assembly that matches the diameter of the pressure valve body, thereby realizing the change of diameter of the pressure valve calibrator.

[0015] 2. Tighten the first and second fastening nuts to secure the pressure valve body and the upper fixing head, thereby strengthening the connection between the lower connecting assembly and the upper connecting assembly and the pressure valve body.

[0016] 3. The first and second sealing rings can seal the upper connecting component, the lower connecting component, and the pressure valve body, thereby improving the airtightness of the pressure valve calibrator. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a pressure valve calibrator diameter changing device proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of the upper connecting component of the pressure valve calibrator variable diameter device proposed in this utility model.

[0019] Figure 3 This is a cross-sectional view of the lower connecting component of the pressure valve calibrator variable diameter device proposed in this utility model.

[0020] Figure 4 This is a cross-sectional front view of the variable diameter device for a pressure valve calibrator proposed in this utility model.

[0021] Figure 5 This is a cross-sectional structural diagram of the pressure valve calibrator variable diameter device connected to the pressure valve and calibrator according to the present invention.

[0022] Figure 6 This is a cross-sectional structural diagram showing the connection state of the connecting component of the pressure valve calibrator variable diameter device with the pressure valve and calibrator under other diameters proposed in this utility model.

[0023] In the diagram: 1. Upper connecting assembly; 101. Upper fixing head; 102. Connecting head; 103. Threaded connection port; 2. Lower connecting assembly; 201. Lower fixing head; 202. First threaded head; 203. Second threaded head; 3. First sealing ring; 4. Second sealing ring; 5. First fastening nut; 6. Second fastening nut; 7. Pressure valve body; 8. Verifier connecting pipe; 9. Connecting pipe head. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1-6 A pressure valve calibrator reducing device includes an upper connecting assembly 1, a lower connecting assembly 2, and a pressure valve body 7. The upper connecting assembly 1 includes an upper fixing head 101, with a connector 102 integrally formed at the top end of the upper fixing head 101 and a threaded connection port 103 at the bottom end of the upper fixing head 101. The lower connecting assembly 2 includes a lower fixing head 201, with a first threaded head 202 integrally formed at the top end of the lower fixing head 201, which is threadedly connected to the threaded connection port 103. A second threaded head 203 is integrally formed at the bottom end of the lower fixing head 201, which is threadedly connected to the pressure valve body 7. By loosening the first fastening nut 5 and the second fastening nut 6, the pressure valve body 7 and the upper fixing head 101 can be removed from the second threaded head 203 and the first threaded head 202 to replace the lower connecting assembly 2, which is compatible with the diameter of the pressure valve body 7.

[0026] A first sealing ring 3 is engaged inside the threaded connection port 103, and one end of the first threaded head 202 contacts the first sealing ring 3, thereby sealing the first threaded head 202 with the upper fixed head 101.

[0027] A second sealing ring 4 is bonded to the bottom end of the second threaded head 203. The second sealing ring 4 contacts the pressure valve body 7, and the second sealing ring 4 is used to seal the pressure valve body 7 and the second threaded head 203.

[0028] The outer wall of the first threaded head 202 is threaded with a first fastening nut 5. The first fastening nut 5 contacts one end of the upper fixed head 101. Tightening the first fastening nut 5 fastens the upper fixed head 101.

[0029] The outer wall of the second threaded head 203 is threaded with a second fastening nut 6. The second fastening nut 6 contacts the pressure valve body 7. Tightening the second fastening nut 6 presses against the pressure valve body 7, thereby fastening the pressure valve body 7.

[0030] The top of connector 102 is snapped with a connecting tube head 9, and the top of connecting tube head 9 is threadedly connected to the valid tester connecting tube 8.

[0031] The working principle of this embodiment is as follows: When in use, the pressure valve body 7 is threaded to one end of the second threaded head 203, and the second sealing ring 4 is used to seal the pressure valve body 7 and the second threaded head 203. Then, the second fastening nut 6 is tightened against the pressure valve body 7 to fasten the pressure valve body 7. Then, the calibrator connecting pipe 8 is connected to the pressure valve calibrator to perform pressure valve testing.

[0032] When different models of pressure valve bodies 7 need to be tested, loosen the first fastening nut 5 and the second fastening nut 6, then remove the pressure valve body 7 and the upper fixing head 101 from the second threaded head 203 and the first threaded head 202. Then, replace the lower connecting component 2 with the one that matches the diameter of the pressure valve body 7. Next, tighten the lower connecting component 2 between the pressure valve body 7 and the upper fixing head 101, and then tighten the first fastening nut 5 and the second fastening nut 6 to secure the pressure valve body 7 and the upper fixing head 101, thereby completing the replacement of the lower connecting component 2.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure valve calibrator reducing device, comprising an upper connecting assembly (1), a lower connecting assembly (2), and a pressure valve body (7), characterized in that, The upper connecting assembly (1) includes an upper fixing head (101), a connector (102) is fixedly connected to the top of the upper fixing head (101), and a threaded connection port (103) is provided at the bottom of the upper fixing head (101). The lower connecting assembly (2) includes a lower fixing head (201), a first threaded head (202) is fixedly connected to the top of the lower fixing head (201), the first threaded head (202) is threadedly connected to the threaded connection port (103), and a second threaded head (203) is fixedly connected to the bottom of the lower fixing head (201), the second threaded head (203) is threadedly connected to the pressure valve body (7).

2. A pressure valve calibrator reducer device according to claim 1, wherein, The threaded connection (103) is fitted with a first sealing ring (3), and one end of the first threaded head (202) is in contact with the first sealing ring (3).

3. A pressure valve calibrator reducer device according to claim 1, wherein, The bottom end of the second threaded head (203) is fixedly connected to a second sealing ring (4), which is in contact with the pressure valve body (7).

4. A pressure valve calibrator reducer device according to claim 1, wherein, The outer wall of the first threaded head (202) is threaded with a first fastening nut (5), which is in contact with one end of the upper fixing head (101).

5. A pressure valve calibrator reducer device according to claim 1, wherein, The outer wall of the second threaded head (203) is threaded with a second fastening nut (6), which is in contact with the pressure valve body (7).

6. A pressure valve calibrator reducer device according to claim 1, wherein, The connector (102) is fitted with a connector tube head (9) at its top end.

7. A pressure valve prover reducer assembly as defined in Claim 6 wherein, The top end of the connecting pipe head (9) is threadedly connected to the valid tester connecting pipe (8).

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