A pressure reducing valve characteristic testing device

Abstract

The utility model provides a kind of pressure reducing valve characteristic testing device, including base and the horizontal moving mechanism being arranged inside it, water inlet mechanism, drainage mechanism and centering mechanism. Through the movement adjustment of upper adjusting frame or lower adjusting frame, it is convenient to drive fixed pipe, elongated rod synchronous movement by upper adjusting frame, lower adjusting frame, and it is convenient to align fixed pipe and elongated rod with the flange hole of both ends of pressure reducing valve body by the lifting adjustment of adjusting plate and other centering mechanism to elongated rod pull and install in the flange hole of both ends of pressure reducing valve body, it is convenient to butt joint and the inlet and outlet of pressure reducing valve body by centering, by horizontal moving mechanism drive lifting mechanism, adjusting plate and water inlet pipe, drain pipe and butt joint movement, it is convenient to use butt joint and the inlet and outlet of both ends of different specifications pressure reducing valve body to butt joint, it is convenient to carry out characteristic test to different specifications pressure reducing valve body, the practicality of the testing device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure reducing valve characteristic testing technology, specifically a pressure reducing valve characteristic testing device. Background Technology

[0002] A fire-fighting pressure reducing valve is a type of valve used in fire protection systems. Its main function is to reduce the pressure in the pipeline network to the required range, ensuring the normal operation of fire-fighting equipment. After the fire-fighting pressure reducing valve is manufactured, it needs to undergo characteristic testing.

[0003] Chinese utility model patent CN219870279U discloses a pressure-reducing valve pressure-reducing characteristic testing device, including an air reservoir. One end of the air reservoir has a pressurization port, and the other end has a safety valve. The air reservoir has at least one first connecting pipe, and the end of the first connecting pipe not connected to the air reservoir is connected to the valve under test. The device tests the pressure-reducing characteristics of the valve under test by installing it on the first and second connecting pipes and then pressurizing it through the pressurization port. However, the first and second connecting pipes can only be fixedly connected to the two ends of one type of valve under test. Therefore, this device can only test the characteristics of pressure-reducing valves of the same model and cannot test other models, which reduces the practicality of this testing device.

[0004] Therefore, this utility model provides a pressure reducing valve characteristic testing device. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a pressure reducing valve characteristic testing device to solve the problems mentioned in the background. This invention uses a horizontal movement mechanism to drive the lifting mechanism, adjusting plate, inlet pipe, outlet pipe, and abutment to move. Through the adjustment of the centering mechanism such as the fixed pipe and extension rod, the abutment can be easily aligned with the inlet and outlet of the pressure reducing valve body. This facilitates the use of the abutment to abut with the two ends of the pressure reducing valve body of different specifications, making it convenient to conduct characteristic tests on pressure reducing valve bodies of different specifications, thus improving the practicality of the testing device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure reducing valve characteristic testing device, comprising a base and an internally arranged transverse movement mechanism, a water inlet mechanism, a water outlet mechanism, and a centering mechanism. The water inlet mechanism includes a water inlet pipe and an abutment connector, the abutment connector being fixedly connected to one side of the top end of the water inlet pipe. The centering mechanism includes an adjusting plate, an upper adjusting frame, a lower adjusting frame, a fixed tube, and an extension rod. The upper and lower adjusting frames are movably mounted on the top and bottom ends of the adjusting plate via a transmission mechanism. The abutment connector is fixedly mounted inside the adjusting plate between the upper and lower adjusting frames. The fixed tube is fixedly mounted on one side of one end of the upper and lower adjusting frames, respectively. The extension rod is slidably mounted inside the fixed tube. The transverse movement mechanism includes a transverse movement frame and a transverse hydraulic rod. The adjusting plate is movably mounted on the top of the outer end of the transverse movement frame via a lifting mechanism. A rubber layer is fixedly provided on the outer wall of the abutment connector.

[0007] Furthermore, the transverse frame is L-shaped, and the transverse frame is symmetrically and slidably installed inside both ends of the base. The transverse hydraulic rod is fixedly installed on the top and bottom of the inner side of the base, and the output rod of the transverse hydraulic rod is fixedly connected to the inner ends of the transverse frame on both sides respectively.

[0008] Furthermore, the lifting mechanism includes a lifting hydraulic rod and a guide plate. The lifting hydraulic rod is vertically fixed inside the outer end of the two transverse frames. The adjusting plate is fixedly installed at the top of the output rod of the lifting hydraulic rod. The guide plate is fixedly installed on one side of the bottom end of the adjusting plate. The guide plate is slidably installed inside the guide groove opened at the outer end of the transverse frame.

[0009] Furthermore, a water pressure gauge is fixedly installed on one side of the water inlet pipe, a water flow meter is fixedly installed at the top of the water inlet pipe, a connector is fixedly installed at the bottom of the water inlet pipe, and the water inlet pipe is located on the outside of a side adjustment plate.

[0010] Furthermore, a drainage pressure gauge is fixedly installed on one side of the drainage pipe, a drainage flow meter is fixedly installed at the top of the drainage pipe, a connector is fixedly installed at the bottom of the drainage pipe, and the drainage pipe is located on the outside of the adjustment plate on the other side.

[0011] Furthermore, both the upper and lower adjustment frames are U-shaped, and the transmission mechanism includes gears and racks, with the racks symmetrically fixedly installed on the side walls at both ends of the upper and lower adjustment frames.

[0012] Furthermore, the gears are symmetrically mounted inside both ends of the adjusting plate via a rotating shaft. The gears mesh with the racks at both ends of the upper and lower adjusting frames. The fixing tubes and extension rods are symmetrically arranged at the top and bottom of the abutment.

[0013] Furthermore, a positioning block is fixedly installed on the top of the base, a pad is snapped onto the top of the positioning block, a pressure reducing valve body is placed on the top of the pad, and one end of the extension rod is inserted into the flange holes at both ends of the pressure reducing valve body.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a pressure reducing valve characteristic testing device. By adjusting the movement of the upper or lower adjusting frame, the upper and lower adjusting frames are mutually driven by a transmission mechanism. This facilitates the synchronous movement of the fixed pipe and extension rod driven by the upper and lower adjusting frames. Furthermore, the centering mechanism, such as the adjusting plate, is raised and lowered by the lifting mechanism. This allows the fixed pipe and extension rod to be aligned with the flange holes at both ends of the pressure reducing valve body. The extension rod is pulled and installed in the flange holes at both ends of the pressure reducing valve body, facilitating the alignment of the abutment with the inlet and outlet of the pressure reducing valve body. The lateral movement mechanism drives the lifting mechanism, adjusting plate, inlet pipe, drain pipe, and abutment to move, facilitating the use of the abutment to abut with the inlet and outlet of pressure reducing valve bodies of different specifications. This allows for the characteristic testing of pressure reducing valve bodies of different specifications, thus improving the practicality of the testing device. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a pressure reducing valve characteristic testing device according to the present invention;

[0016] Figure 2 This is a front cross-sectional view of a pressure reducing valve characteristic testing device according to the present invention;

[0017] Figure 3 This is a structural diagram of the base of a pressure reducing valve characteristic testing device according to the present invention;

[0018] Figure 4 This is a structural diagram of the transverse movement mechanism of a pressure reducing valve characteristic testing device according to this utility model;

[0019] Figure 5 This is a structural diagram of the pad block of a pressure reducing valve characteristic testing device according to the present invention;

[0020] Figure 6 This is a structural diagram of the water inlet mechanism of a pressure reducing valve characteristic testing device according to this utility model;

[0021] Figure 7 This is a structural diagram of the centering mechanism of a pressure reducing valve characteristic testing device according to this utility model;

[0022] Figure 8 This is a right-side cross-sectional view of the centering mechanism of a pressure reducing valve characteristic testing device according to this utility model;

[0023] In the diagram: 1. Base; 2. Horizontal movement frame; 3. Adjusting plate; 4. Inlet pipe; 5. Inlet pressure gauge; 6. Inlet flow meter; 7. Abutment joint; 8. Centering mechanism; 9. Positioning block; 10. Drain pipe; 11. Drain pressure gauge; 12. Drain flow meter; 13. Guide plate; 14. Lifting hydraulic rod; 15. Pressure reducing valve body; 16. Pad; 17. Horizontal movement hydraulic rod; 18. Guide groove; 19. Upper adjusting frame; 20. Lower adjusting frame; 21. Fixed pipe; 22. Extension rod; 23. Transmission mechanism. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Please see Figures 1 to 8 This utility model provides a technical solution: a pressure reducing valve characteristic testing device, including a base 1 and a transverse movement mechanism, a water inlet mechanism, a water outlet mechanism, and a centering mechanism 8 disposed therein. The water inlet mechanism includes a water inlet pipe 4 and a connecting joint 7, the connecting joint 7 being fixedly connected to one side of the top end of the water inlet pipe 4. The centering mechanism 8 includes an adjusting plate 3, an upper adjusting frame 19, a lower adjusting frame 20, a fixed pipe 21, and an extension rod 22. The upper adjusting frame 19 and the lower adjusting frame 20 are movably installed at the top and bottom ends of the adjusting plate 3 via a transmission mechanism 23. The connecting joint 7 is fixedly installed inside the adjusting plate 3 between the upper adjusting frame 19 and the lower adjusting frame 20. The fixed pipe 21 is fixedly installed on one side of one end of the upper adjusting frame 19 and the lower adjusting frame 20, respectively. The extension rod 22 is slidably installed on the fixed pipe 21. Inside, the transverse movement mechanism includes a transverse movement frame 2 and a transverse movement hydraulic rod 17. The adjusting plate 3 is movably mounted on the top of the outer end of the transverse movement frame 2 via a lifting mechanism. A rubber layer is fixedly provided on the outer wall of the abutment 7. By adjusting the lifting of the adjusting plate 3 through the lifting mechanism, the centering mechanism 8 can be moved. Furthermore, the movement of the upper adjusting frame 19 and the lower adjusting frame 20 can move the fixed tube 21 and the extension rod 22, aligning the extension rod 22 and the fixed tube 21 with the flange holes at both ends of the pressure reducing valve body 15. This facilitates aligning the abutment 7 with the inlet and outlet of the pressure reducing valve body 15 at both ends. The abutment 7 can be used to abut with pressure reducing valve bodies 15 of different specifications, making it convenient to use the device to perform characteristic tests on pressure reducing valve bodies 15 of different specifications, thereby improving the practicality of the device.

[0026] In this embodiment, the transverse frame 2 is L-shaped and is symmetrically and slidably mounted inside both ends of the base 1. The transverse hydraulic rod 17 is fixedly mounted on the top and bottom of the inner side of the base 1. The output rod of the transverse hydraulic rod 17 is fixedly connected to the inner ends of the transverse frames 2 on both sides. The lifting mechanism includes a lifting hydraulic rod 14 and a guide plate 13. The lifting hydraulic rod 14 is vertically fixedly mounted inside the outer ends of the transverse frames 2 on both sides. The adjusting plate 3 is fixedly mounted on the top of the output rod of the lifting hydraulic rod 14. The guide plate 13 is fixedly mounted on one side of the bottom end of the adjusting plate 3. The guide groove 18, which is slidably installed inside the outer end of the transverse frame 2, allows for the lifting and lowering adjustment of the centering mechanism 8, such as the adjusting plate 3, via the lifting hydraulic rod 14. This facilitates the alignment of the abutment 7 with the inlet and outlet ends of the pressure reducing valve body 15. The transverse frame 2 is moved by the transverse hydraulic rod 17, and the transverse frame 2 moves the abutment 7 and the centering mechanism 8 via the lifting mechanism. This facilitates the abutment 7 to be engaged or disengaged from the pressure reducing valve body 15, which is convenient for subsequent characteristic testing of the pressure reducing valve body 15. The guide plate 13 and the guide groove 18 guide and limit the adjusting plate 3, thereby improving the stability of the adjusting plate 3.

[0027] In this embodiment, an inlet pressure gauge 5 is fixedly installed on one side of the inlet pipe 4, an inlet flow meter 6 is fixedly installed at the top of the inlet pipe 4, and a connector is fixedly installed at the bottom of the inlet pipe 4. The inlet pipe 4 is located on the outside of one side adjustment plate 3. A drain pressure gauge 11 is fixedly installed on one side of the drain pipe 10, a drain flow meter 12 is fixedly installed at the top of the drain pipe 10, and a connector is fixedly installed at the bottom of the drain pipe 10. The drain pipe 10 is located on the outside of the other side adjustment plate 3. Through the cooperation of the inlet pressure gauge 5, the inlet flow meter 6, the drain pressure gauge 11, and the drain flow meter 12, it is convenient to detect the pressure and flow of water at both ends of the pressure reducing valve body 15, and convenient to calculate the characteristics of the pressure reducing valve body 15.

[0028] In this embodiment, both the upper adjusting frame 19 and the lower adjusting frame 20 are U-shaped. The transmission mechanism 23 includes gears and racks. The racks are symmetrically fixedly installed on the side walls at both ends of the upper adjusting frame 19 and the lower adjusting frame 20. The gears are symmetrically rotatable inside the adjusting plate 3 at both ends via a rotating shaft. The gears mesh with the racks at both ends of the upper adjusting frame 19 and the lower adjusting frame 20. The fixing tube 21 and the extension rod 22 are symmetrically arranged at the top and bottom of the abutment joint 7. A positioning device is fixedly installed on the top of the base 1. Block 9, the top of the positioning block 9 is snapped with a pad 16, the top of the pad 16 is placed on the pressure reducing valve body 15, one end of the extension rod 22 is inserted into the flange holes at both ends of the pressure reducing valve body 15, through the cooperation of the gear and rack transmission mechanism 23, the upper adjustment frame 19 and the lower adjustment frame 20 are easily adjusted synchronously, and the fixed tube 21 and the extension rod 22 are easily moved synchronously, so as to easily align the fixed tube 21 and the extension rod 22 with the pressure reducing valve body 15, and to easily align the abutment 7 with the inlet and outlet of the pressure reducing valve body 15.

[0029] When using this pressure reducing valve characteristic testing device, the pad 16 is installed on top of the base 1 through the insertion of the positioning block 9, and the pressure reducing valve body 15 to be tested is placed on top of the pad 16. The inlet and outlet ends of the pressure reducing valve body 15 are adjusted to be horizontal. The upper adjusting frame 19 on both sides of the adjusting plate 3 is pulled. The upper adjusting frame 19 slides inside the adjusting plate 3 and drives the lower adjusting frame 20 to move downward synchronously through the meshing of gears and racks. The upper adjusting frame 19 and the lower adjusting frame 20 simultaneously drive the top and bottom fixing tubes 21 and extension rods 22 to move. The fixing tubes 21 and extension rods 22 are moved to positions corresponding to the top and bottom flange holes of the flanges at both ends of the pressure reducing valve body 15. The top extension rod 22 is then pulled. One end of the extension rod 22 is inserted into the corresponding flange hole. The lifting hydraulic rod 14 and the lateral hydraulic rod 17 are fixedly connected to the hydraulic equipment through pipelines and can be controlled. According to the height of the inlet and outlet at both ends of the pressure reducing valve body 15, the lifting hydraulic rod 14 is controlled to start and drive the adjusting plate 3 to move up and down. During the movement of the adjusting plate 3, since the top extension rod 22 is installed inside the flange hole, the extension rod 22 can limit the fixed pipe 21 and the upper adjusting frame 19. The lifting and lowering of the adjusting plate 3 can push and pull the upper adjusting frame 19. The upper adjusting frame 19 drives the lower adjusting frame 20, the bottom fixed pipe 21, and the bottom extension rod 22 to move through the meshing of the rack and pinion, and pulls the extension rod 22 and the pressure reducing valve body 15. The bottom flange holes of the valve body 15 are aligned, causing the adjusting plate 3 to move the abutment 7 to align with the inlet and outlet ends of the pressure reducing valve body 15. The horizontal moving hydraulic rod 17 moves the horizontal moving frame 2, which, through a lifting mechanism, moves the adjusting plate 3 and the abutment 7 closer to the pressure reducing valve body 15. The abutment 7 is inserted into the inlet and outlet ends of the pressure reducing valve body 15 and seals them. The bottom ends of the inlet pipe 4 and the drain pipe 10 are fixedly connected to the water pump and the water storage tank respectively via connectors and pipes. The water pump draws water from the water storage tank and sends it into the inlet pipe 4. The inlet pressure gauge 5 and the inlet flow meter 6 are used to detect the flow rate and pressure of the water in the inlet pipe 4. Water enters the drain pipe 10 after being depressurized by the pressure reducing valve body 15. Internally, a drain pressure gauge 11 and a drain flow meter 12 are used to detect the pressure and flow rate inside the drain pipe 10, facilitating characteristic testing of the pressure reducing valve body 15. The device also facilitates the use of the abutment connector 7 to connect with the inlet and outlet ends of different specifications of the pressure reducing valve body 15, thus improving the practicality of the testing device. The inlet pressure gauge 5 and drain pressure gauge 11 are both GJM-100 models, and the inlet flow meter 6 and drain flow meter 12 are both 7ME5034-0AA11-1AA0 models. The horizontal hydraulic rod 17, the lifting hydraulic rod 14, the hydraulic equipment, and the pressure reducing valve body 15 are all existing known devices, and are not described in detail in this application.

[0030] 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 pressure reducing valve characteristic testing device, comprising a base (1) and a transverse movement mechanism, a water inlet mechanism, a water outlet mechanism, and a centering mechanism (8) disposed therein, characterized in that, The water inlet mechanism includes an inlet pipe (4) and an abutment (7). The abutment (7) is fixedly connected to one side of the top end of the inlet pipe (4). The centering mechanism (8) includes an adjusting plate (3), an upper adjusting frame (19), a lower adjusting frame (20), a fixed pipe (21), and an extension rod (22). The upper adjusting frame (19) and the lower adjusting frame (20) are movably installed at the top and bottom ends of the adjusting plate (3) through a transmission mechanism (23). The abutment (7) is fixedly installed on the adjusting plate (3). The internal structure corresponds to the upper adjustment frame (19) and the lower adjustment frame (20). The fixed tube (21) is fixedly installed on one side of one end of the upper adjustment frame (19) and the lower adjustment frame (20). The extension rod (22) is slidably installed inside the fixed tube (21). The transverse movement mechanism includes a transverse frame (2) and a transverse hydraulic rod (17). The adjustment plate (3) is movably installed on the top of the outer end of the transverse frame (2) through a lifting mechanism. A rubber layer is fixedly provided on the outer wall of the abutment (7).

2. The pressure reducing valve characteristic testing device according to claim 1, characterized in that: The transverse frame (2) is L-shaped. The transverse frame (2) is symmetrically and slidably installed inside both ends of the base (1). The transverse hydraulic rod (17) is fixedly installed on the top and bottom of the inner side of the base (1). The output rod of the transverse hydraulic rod (17) is fixedly connected to the inner ends of the transverse frame (2) on both sides respectively.

3. The pressure reducing valve characteristic testing device according to claim 2, characterized in that: The lifting mechanism includes a lifting hydraulic rod (14) and a guide plate (13). The lifting hydraulic rod (14) is vertically fixed inside the outer end of the two transverse frames (2). The adjusting plate (3) is fixedly installed at the top of the output rod of the lifting hydraulic rod (14). The guide plate (13) is fixedly installed on one side of the bottom end of the adjusting plate (3). The guide plate (13) is slidably installed inside the guide groove (18) opened at the outer end of the transverse frame (2).

4. The pressure reducing valve characteristic testing device according to claim 1, characterized in that: A water pressure gauge (5) is fixedly installed on one side of the water inlet pipe (4), a water flow meter (6) is fixedly installed at the top of the water inlet pipe (4), a connector is fixedly installed at the bottom of the water inlet pipe (4), the water inlet pipe (4) is located on the outside of one side adjustment plate (3), and a drain pipe (10) is located on the outside of the other side adjustment plate (3).

5. The pressure reducing valve characteristic testing device according to claim 4, characterized in that: A drainage pressure gauge (11) is fixedly installed on one side of the drainage pipe (10), a drainage flow meter (12) is fixedly installed at the top of the drainage pipe (10), and a connector is fixedly installed at the bottom of the drainage pipe (10).

6. The pressure reducing valve characteristic testing device according to claim 1, characterized in that: The upper adjustment frame (19) and the lower adjustment frame (20) are both U-shaped. The transmission mechanism (23) includes gears and racks. The racks are symmetrically fixed on the side walls at both ends of the upper adjustment frame (19) and the lower adjustment frame (20).

7. The pressure reducing valve characteristic testing device according to claim 6, characterized in that: The gears are symmetrically mounted inside both ends of the adjusting plate (3) via a rotating shaft. The gears mesh with the racks set at both ends of the upper adjusting frame (19) and the lower adjusting frame (20). The fixed tube (21) and the extension rod (22) are symmetrically set at the top and bottom of the abutment joint (7).

8. The pressure reducing valve characteristic testing device according to claim 7, characterized in that: A positioning block (9) is fixedly installed on the top of the base (1), and a pad (16) is snapped onto the top of the positioning block (9). A pressure reducing valve body (15) is placed on the top of the pad (16), and one end of the extension rod (22) is inserted into the flange holes at both ends of the pressure reducing valve body (15).

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