CN220568407U - A pressure reducing valve test bench - Google Patents

Abstract

The utility model relates to the technical field of valve detection, and discloses a pressure reducing valve test table which comprises a frame, wherein a workbench and a pressure detection box are arranged on the frame, a first positioning clamp assembly and a second positioning clamp assembly are fixedly arranged on the workbench, the first positioning clamp assembly comprises a clamp seat, one end of the clamp seat is provided with a placing block, the other end of the clamp seat is horizontally connected with a plugging cylinder through a cylinder fixing plate, the output end of the plugging cylinder is connected with a plug, an air inlet hole and a connecting hole are formed in the plug, the second positioning clamp assembly comprises a fixing seat, a connecting tube head, a switch seat and an air outlet hole connected with an air outlet pipe, a high-pressure gauge, an electronic digital display pressure gauge and a flowmeter are arranged on the pressure detection box, the high-pressure gauge is connected with an air inlet pipe, the electronic digital display pressure gauge and the flowmeter are connected with the air outlet pipe, air is output from the connecting air pipe on a pressure reducing valve body, and the air pressure detection box can judge the air tightness and the air pressure stability condition of the pressure reducing valve through detecting the output pressure.

Description

A pressure reducing valve test bench

Technical field

The utility model relates to the technical field of valve detection, and in particular to a pressure reducing valve test bench.

Background technique

The pressure reducing valve reduces the inlet pressure to a certain required outlet pressure when the inlet pressure is constantly changing, and relies on the energy of the medium itself to keep the outlet pressure and temperature within a certain range; from the perspective of fluid mechanics , the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction; in the actual production process, Due to defects such as trachoma in the valve body caused by the casting mold, the pressure reducing valve may suffer from air leakage, pressure imbalance, etc. during subsequent production and assembly. It is very easy to cause accidents when used directly on equipment, so it is necessary to The air tightness and stability performance of the valve are tested.

At present, gas pressure reducing valves are generally installed on gas main pipelines to reduce and stabilize gas pressure. They are indispensable equipment on on-site pipelines using gas equipment. The gas pressure reducing valves include a pressure reducing valve body and a The connecting air pipe on the pressure reducing valve body, therefore, researchers in the field provide a pressure reducing valve test bench.

Utility model content

The technical problem to be solved by the utility model is to overcome the shortcomings of the existing technology and provide a pressure reducing valve test bench for the sealing performance of the gas pipe connected to the gas pressure reducing valve body.

The technical solution of the present invention is: a pressure reducing valve test bench, which includes a frame. A workbench and a pressure detection box are provided on the frame. A first positioning fixture assembly and a third positioning fixture assembly are fixedly provided on the workbench. Two positioning clamp assemblies. The first positioning clamp assembly includes a clamp base. One end of the clamp base is provided with a placement block, and the other end is horizontally connected to a blocking cylinder through a cylinder fixing plate. The output end of the blocking cylinder is connected to a blocking block. The plug is provided with an air inlet hole and a connecting hole connected to the air inlet pipe. The second positioning fixture assembly includes a fixed base, a connecting pipe head provided on the fixed base, a switch base and an air outlet pipe. The connected air outlet, the pressure detection box is provided with a high pressure meter, an electronic digital display meter and a flow meter, the high pressure meter is connected to the air inlet pipe, the electronic digital display meter and the flow meter are connected to the outlet Tracheal connection.

It can be seen from the above solution that the placing block is used to place the pressure reducing valve, the plug is used to block the air inlet end of the pressure reducing valve driven by the blocking cylinder, and the air inlet hole is used to The high-pressure gas is introduced through the air inlet pipe, the connecting hole is used to communicate with the air inlet end of the pressure reducing valve, and the first positioning clamp assembly is used to block the air inlet of the pressure reducing valve and then introduce the high-pressure gas, so The connecting pipe seat is used to connect the connecting air pipe on the pressure reducing valve, the high pressure gauge is connected to the air inlet pipe, and controls and displays the high pressure gas pressure injected into the air inlet pipe. The flow meter is used to measure the flow rate of the connecting air pipe. The third The two positioning clamp assemblies are used to block the air outlet of the pressure reducing valve. The air inlet pipe can inject gas into the air inlet of the pressure reducing valve. After the gas is decompressed by the pressure reducing valve, it flows from the air outlet of the pressure reducing valve through the connecting air pipe. Output, the gas pressure detection box can determine the air tightness and air pressure stability of the pressure reducing valve by detecting the pressure of the air outlet pipe, with a high degree of automation and high detection efficiency.

The plug is arranged in a cylindrical shape, the air inlet hole is arranged on the outer circumferential surface of the plug, the connecting hole is arranged on the end surface of the plug, and the air inlet hole is connected with the connecting hole . It can be seen that the connecting hole is used for connecting the air inlet pipe port of the pressure reducing valve after the plugging cylinder drives the plug to extend.

The pressure detection box is provided with a first solenoid valve and a second solenoid valve. The pressure detection box is provided with a first pressure regulating knob connected to the first solenoid valve and a pressure regulating knob connected to the second solenoid valve. The second pressure regulating knob is provided with an air source at the bottom of the frame, and the air source is connected to the first solenoid valve and the second solenoid valve respectively through an air inlet pipe. It can be seen that the first pressure adjusting knob is connected to the first solenoid valve for adjusting high pressure, and the second pressure adjusting knob is connected to the second solenoid valve for adjusting low pressure.

The placement block is provided with a placement groove. It can be seen that the pressure reducing valve is fixedly placed through the placement groove.

The switch seat includes a short connecting pipe and a switch wrench arranged on the short connecting pipe. Fastening nuts are provided at both ends of the short connecting pipe. The short connecting pipe is connected to the air outlet and the connecting pipe head respectively. Communicated, the short communicating tube is connected to the flow meter through a flow tube. It can be seen that the switch wrench is used to control the opening and closing of the connecting short pipe.

The pressure detection box is also equipped with a U-shaped pressure gauge. It can be seen that the U-shaped pressure gauge facilitates calibration of the electronic digital display and avoids errors in the results.

The workbench is provided with a plurality of installation through holes for inserting the air inlet pipe and the air outlet pipe. It can be seen that the air inlet pipe and the air outlet pipe are connected to the first solenoid valve and the second solenoid valve through installation through holes.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is a schematic structural diagram of the first positioning clamp assembly;

Figure 3 is a schematic structural diagram of the second positioning clamp assembly;

Figure 4 is a cross-sectional view of the second positioning clamp assembly;

Figure 5 is a schematic diagram of the connection of the present utility model.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in Figures 1 to 5, the utility model is a pressure reducing valve test bench, which includes a frame 1. The frame 1 is provided with a workbench 2 and a pressure detection box 3. The workbench 2 is fixed on A first positioning clamp assembly 4 and a second positioning clamp assembly 5 are provided. The first positioning clamp assembly 4 includes a clamp base 41. One end of the clamp base 41 is provided with a placement block 42. The placement block 42 is provided with a placement block 42. The other end of the groove 421 is horizontally connected to a blocking cylinder 44 through the cylinder fixing plate 43. The output end of the blocking cylinder 44 is connected to a plug 45. The plug 45 is driven by the blocking cylinder 44 toward the desired position. The placing block 42 realizes the feeding movement. The plug 45 is provided with an air inlet hole 46 and a connecting hole 47 connected to the air inlet pipe. The second positioning clamp assembly 5 includes a fixed seat 51, 51 on the connecting pipe head 52, the switch seat 53 and the air outlet hole 54 connected to the air outlet pipe. The pressure detection box 3 is provided with a high pressure gauge 6, an electronic digital display meter 7 and a flow meter 8. The pressure detection box 3 A U-shaped pressure gauge 9 is also provided on the workbench 2. The high-pressure gauge 6 is connected to the air inlet pipe. The electronic digital display meter 7 and the flow meter 8 are connected to the air outlet pipe. The workbench 2 is provided with a A plurality of installation through holes 21 for inserting the air inlet pipe and the air outlet pipe.

In this embodiment, the reference number of the pressure reducing valve body is 100, and the reference number of the connecting air pipe is 200.

The plug 45 is arranged in a cylindrical shape, the air inlet hole 46 is provided on the outer circumferential surface of the plug 45 , the connecting hole 47 is provided on the end surface of the plug 45 , the air inlet hole 46 Communicated with the connecting hole 47 .

The pressure detection box 3 is provided with a first solenoid valve and a second solenoid valve. The pressure detection box 3 is provided with a first pressure regulating knob 31 connected to the first solenoid valve and a first pressure regulating knob 31 connected to the second solenoid valve. The second pressure regulating knob 32 connected to the valve is provided with an air source at the bottom of the frame 1, and the air source is connected to the first solenoid valve and the second solenoid valve respectively through the air inlet pipe.

The switch seat 53 includes a short connecting tube 531 and a switch wrench 532 provided on the short connecting tube 531. Fastening nuts 533 are provided at both ends of the short connecting tube 531. The short connecting tube 531 is connected to the short connecting tube 531 respectively. The air outlet hole 54 is connected to the connecting pipe head 52, and the short connecting pipe 531 is connected to the flow meter 8 through a flow pipe. In this embodiment, the short connecting tube 531 and the fixing base 51 are detachably connected.

The working process of the utility model is as follows: place the pressure reducing valve body 100 on the placement block 42 through the placement groove 421, and the plug 45 is driven by the plugging cylinder 44 to realize the feeding movement toward the placement block 42. The connecting hole 47 on the head 45 is connected to the air inlet of the pressure reducing valve body 100, the connecting air pipe 200 is connected to the connecting pipe head 52, the air inlet hole 46 on the plug 45 is connected to the air inlet pipe, and the air outlet hole 54 on the fixed seat 51 Connect the air outlet pipe and introduce high-pressure gas. The high-pressure meter 6 displays the pressure of the incoming high-pressure gas. The electronic digital display meter 7 displays the pressure value at the outlet end of the connected air pipe 200. The pressure value on the pressure reducing valve body 200 connected to the air pipe 200 is judged by the displayed pressure value. Air tightness and air pressure stability, the utility model has a high degree of automation and high detection efficiency.

Finally, it should be emphasized that the above description is not intended to limit the present utility model. For those skilled in the art, the present utility model may have various changes and modifications. All changes within the spirit and principles of the present utility model shall be made. Any modifications, equivalent substitutions, improvements, etc. shall be included in the protection scope of the present utility model.

Claims (7)

1. A relief valve testboard which characterized in that: including frame (1), be provided with workstation (2) and pressure detection case (3) on frame (1), fixed first positioning jig subassembly (4) and second positioning jig subassembly (5) of being provided with on workstation (2), first positioning jig subassembly (4) are including anchor clamps seat (41), anchor clamps seat (41) one end is provided with places piece (42), and the other end is connected with stifled tight cylinder (44) through cylinder fixed plate (43) level, the output of stifled tight cylinder (44) is connected with end cap (45), be provided with inlet port (46) and connecting hole (47) with air inlet connection on end cap (45), second positioning jig subassembly (5) are including fixing base (51), set up connecting pipe head (52) on fixing base (51), switch seat (53) and air outlet hole (54) be connected with the outlet duct, be provided with high-pressure gauge (6), electronic digital display table (7) and flowmeter (8) on pressure detection case (3), high-pressure gauge (6) with electronic display table (7) and flowmeter (8) are connected with the outlet duct.

2. The pressure relief valve test stand of claim 1, wherein: the plug (45) is in a cylindrical shape, the air inlet hole (46) is formed in the outer circumferential surface of the plug (45), the connecting hole (47) is formed in the end face of the plug (45), and the air inlet hole (46) is communicated with the connecting hole (47).

3. The pressure relief valve test stand of claim 1, wherein: the pressure detection box (3) is internally provided with a first electromagnetic valve (31) and a second electromagnetic valve (32), the bottom of the frame (1) is provided with an air source, and the air source is respectively connected with the first electromagnetic valve (31) and the second electromagnetic valve (32) through an air inlet pipe.

4. The pressure relief valve test stand of claim 1, wherein: the placement block (42) is provided with a placement groove (421).

5. The pressure relief valve test stand of claim 1, wherein: the switch seat (53) comprises a communication short pipe (531) and a switch wrench (532) arranged on the communication short pipe (531), fastening nuts (533) are arranged at two ends of the communication short pipe (531), the communication short pipe (531) is respectively communicated with the air outlet hole (54) and the connecting pipe head (52), and the communication short pipe (531) is connected with the flowmeter (8) through a flow pipeline.

6. The pressure relief valve test stand of claim 1, wherein: the pressure detection box (3) is also provided with a U-shaped pressure gauge (9).

7. The pressure relief valve test stand of claim 1, wherein: the workbench (2) is provided with a plurality of mounting through holes (21) for inserting the air inlet pipe and the air outlet pipe.