Multifunctional testing equipment for bottled liquefied petroleum gas pressure regulating valve

Abstract

The utility model relates to the technical field of valve body testing equipment, aims to solve the problem that in the prior art, multiple purposes and full testing of one machine cannot be met, and provides multifunctional testing equipment for a bottled liquefied petroleum gas pressure regulating valve, which comprises a gas inlet header pipe and a gas outlet pipe, the gas inlet header pipe is provided with a high-pressure gas inlet pipe, a low-pressure gas inlet pipe and a mass flowmeter gas inlet pipe; a clamp is connected between the air inlet header pipe and the air outlet pipe; one end of the high-pressure air inlet pipe and one end of the low-pressure air inlet pipe are connected in parallel and detachably connected to the clamp, and the high-pressure air inlet pipe and the low-pressure air inlet pipe are independently connected with the mass flow meter air inlet pipe in series. Pipelines of the high-pressure air inlet pipe, the low-pressure air inlet pipe and the mass flow meter air inlet pipe are respectively provided with a plurality of valve bodies for opening and closing, and openings of the high-pressure air inlet pipe, the low-pressure air inlet pipe and the mass flow meter air inlet pipe are respectively provided with a high-pressure air inlet, a low-pressure air inlet and a mass flow meter air inlet. The beneficial effects of the utility model are that the device is simple in structure, and can be used for multiple purposes and can be used for full testing.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body testing equipment, in particular to a multifunctional testing device for a bottled liquefied petroleum gas pressure regulating valve. Background Art

[0002] At present, the functional test of the pressure regulating valve has many test items according to the national standard, and the current testing equipment is temporarily unable to meet the requirements of one machine for multiple uses and one machine for full testing, that is, one device cannot perform multiple tests on the pressure regulating valve through gases with different pressures. Utility Model Content

[0003] The utility model aims to provide a multifunctional testing device for a bottled liquefied petroleum gas pressure regulating valve, so as to solve the problem in the prior art that one machine cannot be used for multiple purposes and can perform all tests.

[0004] The embodiment of the present utility model is achieved as follows:

[0005] The embodiment of the utility model provides a multifunctional testing device for a bottled liquefied petroleum gas pressure regulating valve, which comprises an air inlet manifold and an air outlet pipe;

[0006] The intake manifold comprises a high-pressure intake pipe, a low-pressure intake pipe and a mass flow meter intake pipe;

[0007] A clamp is provided between one end of the intake manifold close to the outlet pipe and one end of the outlet pipe close to the intake manifold, and both ends of the clamp are detachably connected to the intake manifold and the outlet pipe respectively;

[0008] One end of the high-pressure intake pipe and one end of the low-pressure intake pipe are connected in parallel to each other and are detachably connected to the clamp, and the high-pressure intake pipe and the low-pressure intake pipe are respectively connected in series with the mass flow meter intake pipe;

[0009] The high-pressure air inlet pipe, the low-pressure air inlet pipe and the mass flowmeter air inlet pipe are each provided with a number of valve bodies for switching, and the openings of the high-pressure air inlet pipe, the low-pressure air inlet pipe and the mass flowmeter air inlet are respectively provided with a high-pressure air inlet, a low-pressure air inlet and a mass flowmeter air inlet.

[0010] When in use, the first test path is that high-pressure gas enters the above-mentioned high-pressure inlet pipe in the above-mentioned intake manifold from the above-mentioned high-pressure inlet port, and the above-mentioned high-pressure inlet pipe introduces the high-pressure gas into the pressure-regulating valve on the above-mentioned fixture, and the high-pressure gas is discharged from the above-mentioned outlet pipe after passing through the pressure-regulating valve, and the corresponding valve bodies on the above-mentioned high-pressure inlet pipe and the above-mentioned outlet pipe are opened, and the corresponding valve bodies on the above-mentioned low-pressure inlet pipe and the above-mentioned mass flowmeter inlet pipe are closed; the second test path is that low-pressure gas enters the above-mentioned low-pressure inlet pipe in the above-mentioned intake manifold from the above-mentioned low-pressure inlet port, and the above-mentioned low-pressure inlet pipe introduces the low-pressure gas into the pressure-regulating valve on the above-mentioned fixture, and the low-pressure gas is discharged from the above-mentioned outlet pipe after passing through the pressure-regulating valve, and the above-mentioned low-pressure inlet pipe and the above-mentioned outlet pipe are closed. The corresponding valve body on the air pipe is opened, and the corresponding valve bodies on the high-pressure air inlet pipe and the mass flowmeter air inlet pipe are closed; in the third test path, the mass flowmeter air intake enters the mass flowmeter air intake pipe from the mass flowmeter air inlet port, and the mass flowmeter air intake pipe introduces the mass flowmeter air intake into the high-pressure air inlet pipe or the low-pressure air inlet pipe, and the mass flowmeter air intake is introduced into the pressure regulating valve on the fixture through the high-pressure air inlet pipe or the low-pressure air inlet pipe, and the mass flowmeter air intake is discharged from the outlet pipe after passing through the pressure regulating valve, the mass flowmeter air intake and the corresponding valve bodies on the outlet pipe are opened, and the corresponding valve bodies on the high-pressure air inlet pipe or the low-pressure air inlet pipe are closed or opened.

[0011] The multifunctional testing equipment for a bottled liquefied petroleum gas pressure regulating valve disclosed in this embodiment is provided with the above-mentioned high-pressure air inlet pipe, the above-mentioned low-pressure air inlet pipe and the above-mentioned mass flowmeter air inlet pipe, so that the pressure regulating valve on the above-mentioned fixture has three gas testing paths, which can simultaneously meet the use of high-pressure and low-pressure air pressure environments, thereby making the multifunctional testing equipment for a bottled liquefied petroleum gas pressure regulating valve have a simple structure and can meet the beneficial effects of multiple uses and full testing of one machine.

[0012] Optionally: the high-pressure intake pipe has a first switch valve and a second switch valve, and one end of the mass flow meter intake pipe close to the high-pressure intake pipe is fixedly connected to the high-pressure intake pipe between the first switch valve and the second switch valve.

[0013] In this arrangement, the first switch valve can control the high-pressure gas entering the high-pressure air inlet, and the second switch valve can control the high-pressure gas entering the high-pressure air inlet and the gas entering the high-pressure air inlet pipe through the mass flow meter inlet pipe, which is convenient for testing the pressure regulating valve through high-pressure gas.

[0014] Optionally: the low-pressure intake pipe has a third switch valve and a fourth switch valve, and one end of the mass flow meter intake pipe close to the low-pressure intake pipe is fixedly connected to the low-pressure intake pipe between the third switch valve and the fourth switch valve.

[0015] In this arrangement, the third switch valve can control the low-pressure gas entering the low-pressure air inlet, and the fourth switch valve can control the low-pressure gas entering the low-pressure air inlet and the gas entering the low-pressure air inlet pipe from the mass flow meter inlet pipe, which is convenient for testing the pressure regulating valve through low-pressure gas.

[0016] Optionally, the mass flow meter air inlet pipe comprises a main pipe, a first auxiliary pipe, and a second auxiliary pipe, wherein the first auxiliary pipe and the second auxiliary pipe are connected to each other, and an end of the main pipe away from the air inlet of the mass flow meter is fixedly connected to the connection between the first auxiliary pipe and the second auxiliary pipe;

[0017] The first auxiliary pipe is fixedly connected to the high-pressure intake pipe, and the second auxiliary pipe is fixedly connected to the low-pressure intake pipe.

[0018] With such an arrangement, the arrangement of the above-mentioned main pipe, the above-mentioned first auxiliary pipe and the above-mentioned second auxiliary pipe is conducive to the diversion of the above-mentioned mass flowmeter inlet pipe, so that the gas in the above-mentioned mass flowmeter inlet pipe can enter the above-mentioned outlet pipe through the above-mentioned high-pressure inlet pipe, and can also enter the above-mentioned outlet pipe through the above-mentioned low-pressure inlet pipe, making the gas flow path more flexible and changeable.

[0019] Optionally, a fifth switch valve is provided on the pipe of the main pipe close to the air inlet of the mass flow meter.

[0020] With such arrangement, the fifth switch valve can open and close the air inlet pipe of the mass flow meter, thereby controlling the gas entering the air inlet of the mass flow meter.

[0021] Optionally, a first needle valve and a second needle valve are sequentially connected in series on the pipe of the main pipe.

[0022] With such arrangement, the first needle valve and the second needle valve have good sealing performance and long service life, and are suitable for controlling the gas in the main pipe.

[0023] Optionally, a sixth switch valve and a seventh switch valve are respectively provided on the first auxiliary pipe and the second auxiliary pipe.

[0024] In this arrangement, the sixth switch valve and the seventh switch valve can respectively control the gas entering the high-pressure intake pipe and the low-pressure intake pipe from the mass flow meter intake pipe, making it convenient to switch the sixth switch valve and the seventh switch valve according to the test conditions to achieve corresponding tests.

[0025] Optionally: a first pressure gauge and a second pressure gauge are fixedly connected in radial direction to the pipe where the above-mentioned intake manifold is connected to the above-mentioned clamp, the above-mentioned first pressure gauge is connected to an eighth switch valve, and the above-mentioned eighth switch valve is close to the pipe between the above-mentioned intake manifold and the above-mentioned clamp.

[0026] With such an arrangement, the second barometer can continuously monitor the air pressure value of the intake manifold, and the first barometer can be used as a backup gauge due to the eighth switch valve. By switching the eighth switch valve, the air pressure value of the first barometer can be read, and then it can be determined whether the air pressure value read by the second barometer is accurate, thereby effectively avoiding the deviation of the air pressure value caused by damage to the second barometer due to long-term operation, thereby avoiding affecting various test results of the pressure regulating valve.

[0027] Optionally, the fixture is provided with a U-shaped frame, a plurality of guide rods are fixedly connected between the two wings of the U-shaped frame, a slider is sleeved on the plurality of guide rods, a fixture flange interface is provided on one side of the U-shaped frame, the fixture flange interface has a first connecting pipe, an end of the first connecting pipe away from the slider has a first flange, and an end of the first connecting pipe away from the first flange passes through one side of the U-shaped frame and is close to the slider;

[0028] A fixture quick-change interface is provided on the other side of the U-shaped frame. The fixture quick-change interface has a second connecting pipe. The end of the second connecting pipe away from the slider has a second flange. The end of the second connecting pipe away from the second flange passes through the other side of the U-shaped frame and the slider in sequence. The second connecting pipe is fixedly connected to the slider.

[0029] The other side of the U-shaped frame is also provided with a driving shaft for extending and retracting the sliding block.

[0030] In this way, by placing the pressure-regulating valve to be tested between the first connecting pipe and the second connecting pipe, rotating the drive shaft so that the slider is connected to the pressure-regulating valve with the second connecting pipe, and the first connecting pipe is connected to the pressure-regulating valve, at this time, it is only necessary to fix the first flange plate to the air intake manifold and the second flange plate to the air outlet pipe so that the pressure-regulating valve can be tested respectively by high-pressure gas or low-pressure gas or mass flow meter intake.

[0031] Optionally, a third air pressure gauge is fixedly connected to the second connecting pipe in the radial direction.

[0032] With such arrangement, the third pressure gauge can effectively detect the pressure value in the outlet pipe after the gas passes through the pressure regulating valve to be detected, which is convenient for the staff to record.

[0033] Optionally, a ninth switch valve and a tenth switch valve are sequentially connected in series on the above-mentioned air outlet pipe.

[0034] With such an arrangement, the ninth on-off valve and the tenth on-off valve can control the on-off of the air outlet pipe, which is beneficial for replacing or connecting the fixture, thereby facilitating testing of various types of pressure regulating valves and improving the detection range of the equipment.

[0035] In summary of the above description, the multifunctional testing equipment for bottled liquefied petroleum gas pressure regulating valve disclosed by the utility model has a simple structure and can achieve the beneficial effects of one machine for multiple uses and one machine for all tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a three-dimensional perspective view of a multifunctional testing device for a bottled liquefied petroleum gas pressure regulating valve in an embodiment of the present utility model;

[0038] Figure 2 For the embodiment of the utility model Figure 1 A in the middle is an enlarged schematic diagram;

[0039] Figure 3 For the embodiment of the utility model Figure 1 The enlarged schematic diagram of point B in the middle;

[0040] Figure 4 It is a structural schematic diagram of the clamp in the embodiment of the present utility model.

[0041] Icons: 1-intake manifold, 2-outlet pipe, 3-high-pressure inlet pipe, 4-low-pressure inlet pipe, 5-mass flowmeter inlet pipe, 6-clamp, 7-valve body, 8-high-pressure inlet port, 9-low-pressure inlet port, 10-mass flowmeter inlet port, 11-first switch valve, 12-second switch valve, 13-third switch valve, 14-fourth switch valve, 15-main pipe, 16-first auxiliary pipe, 17-second auxiliary pipe, 18-fifth switch valve, 19-first needle valve, 20- Second needle valve, 21-sixth switch valve, 22-seventh switch valve, 23-first pressure gauge, 24-second pressure gauge, 25-eighth switch valve, 26-U-shaped frame, 27-guide rod, 28-slider, 29-clamp flange interface, 30-first connecting pipe, 31-first flange, 32-clamp quick change interface, 33-second connecting pipe, 34-second flange, 35-drive shaft, 36-third pressure gauge, 37-ninth switch valve, 38-tenth switch valve. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0044] Example

[0045] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , this embodiment provides a multifunctional testing device for a bottled liquefied petroleum gas pressure regulating valve, comprising an air inlet manifold 1 and an air outlet pipe 2;

[0046] The intake manifold 1 has a high-pressure intake pipe 3, a low-pressure intake pipe 4 and a mass flow meter intake pipe 5;

[0047] A clamp 6 is provided between one end of the intake manifold 1 close to the outlet pipe 2 and one end of the outlet pipe 2 close to the intake manifold 1. Both ends of the clamp 6 are detachably connected to the intake manifold 1 and the outlet pipe 2 respectively.

[0048] One end of the high-pressure air intake pipe 3 and one end of the low-pressure air intake pipe 4 are connected in parallel to each other and are detachably connected to the clamp 6. The high-pressure air intake pipe 3 and the low-pressure air intake pipe 4 are respectively connected in series with the mass flow meter air intake pipe 5;

[0049] Several valve bodies 7 for switching are provided on the pipes of the high-pressure air inlet pipe 3, the low-pressure air inlet pipe 4 and the mass flowmeter air inlet pipe 5. A high-pressure air inlet 8, a low-pressure air inlet 9 and a mass flowmeter air inlet 10 are respectively provided at the openings of the high-pressure air inlet pipe 3, the low-pressure air inlet pipe 4 and the mass flowmeter air inlet pipe 5.

[0050] When in use, the first test path is that high-pressure gas enters the high-pressure intake pipe 3 in the intake manifold 1 from the high-pressure air inlet port 8, and the high-pressure intake pipe 3 introduces the high-pressure gas into the pressure-regulating valve on the fixture 6. The high-pressure gas passes through the pressure-regulating valve and is discharged from the outlet pipe 2. The corresponding valve bodies 7 on the high-pressure intake pipe 3 and the outlet pipe 2 are opened, and the corresponding valve bodies 7 on the low-pressure intake pipe 4 and the mass flowmeter inlet pipe 5 are closed; the second test path is that low-pressure gas enters the low-pressure intake pipe 4 in the intake manifold 1 from the low-pressure air inlet port 9, and the low-pressure intake pipe 4 introduces the low-pressure gas into the pressure-regulating valve on the fixture 6. The low-pressure gas passes through the pressure-regulating valve and is discharged from the outlet pipe 2. The corresponding valve body 7 on the tube 2 is opened, and the corresponding valve bodies 7 on the high-pressure air inlet pipe 3 and the mass flowmeter air inlet pipe 5 are closed; in the third test path, the mass flowmeter air intake enters the mass flowmeter air intake pipe 5 from the mass flowmeter air inlet port 10, and the mass flowmeter air intake pipe 5 introduces the mass flowmeter air intake into the high-pressure air inlet pipe 3 or the low-pressure air inlet pipe 4. The mass flowmeter air intake is then introduced into the pressure regulating valve on the fixture 6 through the high-pressure air inlet pipe 3 or the low-pressure air inlet pipe 4. The mass flowmeter air intake is discharged from the air outlet pipe 2 after passing through the pressure regulating valve. The corresponding valve bodies 7 on the mass flowmeter air intake and air outlet pipe 2 are opened, and the corresponding valve bodies 7 on the high-pressure air inlet pipe 3 or the low-pressure air inlet pipe 4 are closed or opened.

[0051] The multifunctional testing equipment for a bottled liquefied petroleum gas pressure regulating valve disclosed in this embodiment is provided with a high-pressure air inlet pipe 3, a low-pressure air inlet pipe 4 and a mass flowmeter air inlet pipe 5, so that the pressure regulating valve on the fixture 6 has three gas testing paths, which can simultaneously meet the use of high-pressure and low-pressure air pressure environments, thereby making the multifunctional testing equipment for a bottled liquefied petroleum gas pressure regulating valve have a simple structure and can meet the beneficial effects of multiple uses and full testing of one machine.

[0052] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The high-pressure intake pipe 3 has a first switch valve 11 and a second switch valve 12. One end of the mass flowmeter intake pipe 5 close to the high-pressure intake pipe 3 is fixedly connected to the high-pressure intake pipe 3 between the first switch valve 11 and the second switch valve 12. The first switch valve 11 can control the high-pressure gas entering the high-pressure inlet port 8, and the second switch valve 12 can control the high-pressure gas entering the high-pressure inlet port 8 and the gas entering the high-pressure intake pipe 3 from the mass flowmeter intake pipe 5, which is convenient for testing the pressure regulating valve through high-pressure gas.

[0053] The low-pressure air intake pipe 4 has a third switch valve 13 and a fourth switch valve 14. The end of the mass flowmeter air intake pipe 5 close to the low-pressure air intake pipe 4 is fixedly connected to the low-pressure air intake pipe 4 between the third switch valve 13 and the fourth switch valve 14. The third switch valve 13 can control the low-pressure gas entering the low-pressure air inlet 9. The fourth switch valve 14 can control the low-pressure gas entering the low-pressure air inlet 9 and the gas entering the low-pressure air inlet 4 from the mass flowmeter air intake pipe 5, which is convenient for testing the pressure regulating valve through low-pressure gas.

[0054] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The mass flowmeter air inlet pipe 5 has a main pipe 15, a first sub-pipe 16 and a second sub-pipe 17. The first sub-pipe 16 and the second sub-pipe 17 are connected to each other. The end of the main pipe 15 away from the mass flowmeter air inlet port 10 is fixedly connected to the connection between the first sub-pipe 16 and the second sub-pipe 17; the first sub-pipe 16 is fixedly connected to the high-pressure air inlet pipe 3, and the second sub-pipe 17 is fixedly connected to the low-pressure air inlet pipe 4. The arrangement of the main pipe 15, the first sub-pipe 16 and the second sub-pipe 17 is conducive to the diversion of the mass flowmeter air inlet pipe 5, so that the gas in the mass flowmeter air inlet pipe 5 can enter the air outlet pipe 2 through the high-pressure air inlet pipe 3, and can also enter the air outlet pipe 2 through the low-pressure air inlet pipe 4, making the gas flow path more flexible and changeable.

[0055] A fifth switch valve 18 is provided on the main pipe 15 near the mass flow meter air inlet 10 . The fifth switch valve 18 can open and close the mass flow meter air inlet pipe 5 , thereby controlling the gas entering the mass flow meter air inlet 10 .

[0056] A first needle valve 19 and a second needle valve 20 are sequentially connected in series on the pipeline of the main pipe 15 . The first needle valve 19 and the second needle valve 20 have good sealing performance and long service life, and are suitable for controlling the gas in the main pipe 15 .

[0057] A sixth switch valve 21 and a seventh switch valve 22 are respectively provided on the first auxiliary pipe 16 and the second auxiliary pipe 17. The sixth switch valve 21 and the seventh switch valve 22 can respectively control the gas entering the high-pressure intake pipe 3 and the low-pressure intake pipe 4 from the mass flow meter intake pipe 5, so as to facilitate switching the sixth switch valve 21 and the seventh switch valve 22 according to the test conditions to realize the corresponding test.

[0058] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4A first pressure gauge 23 and a second pressure gauge 24 are fixedly connected to the radial direction of the pipe where the intake manifold 1 is connected to the fixture 6. The first pressure gauge 23 is connected to an eighth switch valve 25. The eighth switch valve 25 is close to the pipe between the intake manifold 1 and the fixture 6. The second pressure gauge 24 can continuously monitor the air pressure value of the intake manifold 1. Since the first pressure gauge 23 is provided with the eighth switch valve 25, it can be used as a backup gauge. By switching the eighth switch valve 25, the air pressure value of the first pressure gauge 23 can be read, and then it can be determined whether the air pressure value read by the second pressure gauge 24 is accurate, which effectively avoids the deviation of the air pressure value caused by damage to the second pressure gauge 24 due to long-term operation, thereby avoiding affecting various test results of the pressure regulating valve.

[0059] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The fixture 6 is provided with a U-shaped frame 26, and a plurality of guide rods 27 are fixedly connected between the two wings of the U-shaped frame 26. A slider 28 is sleeved on the plurality of guide rods 27. A flange interface of the fixture 6 is provided on one side of the U-shaped frame 26. The flange interface of the fixture 6 has a first connecting pipe 30. The end of the first connecting pipe 30 away from the slider 28 has a first flange 31. The end of the first connecting pipe 30 away from the first flange 31 passes through one side of the U-shaped frame 26 and is close to the slider 28.

[0060] The other side of the U-shaped frame 26 is provided with a quick-change interface of the clamp 6, and the quick-change interface of the clamp 6 has a second connecting pipe 33, and the end of the second connecting pipe 33 away from the slider 28 has a second flange 34, and the end of the second connecting pipe 33 away from the second flange 34 passes through the other side of the U-shaped frame 26 and the slider 28 in sequence, and the second connecting pipe 33 is fixedly connected to the slider 28; the other side of the U-shaped frame 26 is also provided with a drive shaft 35 for retracting the slider 28. By placing the pressure regulating valve to be tested between the first connecting pipe 30 and the second connecting pipe 33, rotating the drive shaft 35, so that the slider 28 is connected to the pressure regulating valve with the second connecting pipe 33, and the first connecting pipe 30 is connected to the pressure regulating valve. At this time, it is only necessary to fix the first flange 31 to the intake manifold 1 and the second flange 34 to the outlet pipe 2 so that the pressure regulating valve can be tested respectively by high-pressure gas or low-pressure gas or mass flow meter intake.

[0061] A third pressure gauge 36 is fixedly connected to the radial direction of the second connecting pipe 33. The third pressure gauge 36 can effectively detect the pressure value in the outlet pipe 2 after the gas passes through the pressure regulating valve to be detected, which is convenient for the staff to record.

[0062] The ninth switch valve 37 and the tenth switch valve 38 are connected in series on the air outlet pipe 2. The ninth switch valve 37 and the tenth switch valve 38 can control the switch of the air outlet pipe 2, which is conducive to replacing or connecting the clamp 6, and then facilitates the testing of various types of pressure regulating valves, thereby improving the detection range of the equipment.

[0063] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In this embodiment, the high and low pressure air intake design is mainly used to combine the two air pressure test environments; the mass flow meter air intake is also an independent test item to test the air tightness of the pressure regulating valve. The advantage is that the functions are combined and one machine can be used for multiple purposes.

[0064] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The specific method of using the multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve in this embodiment is as follows:

[0065] During the high-pressure gas supply test, high-pressure gas enters the high-pressure intake pipe 3 in the intake manifold 1 from the high-pressure intake port 8. The high-pressure intake pipe 3 then directs the high-pressure gas to the pressure-regulating valve on the fixture 6. After passing through the pressure-regulating valve, the high-pressure gas is discharged from the outlet pipe 2. The first on-off valve 11, the second on-off valve 12, the ninth on-off valve 37, and the tenth on-off valve 38 are open, and the fourth on-off valve 14, the sixth on-off valve 21, and the eighth on-off valve 25 are closed.

[0066] During the low-pressure air supply test, low-pressure gas enters the low-pressure air inlet pipe 4 in the air intake manifold 1 from the low-pressure air inlet port 9. The low-pressure air inlet pipe 4 then directs the low-pressure gas to the pressure-regulating valve on the fixture 6. After passing through the pressure-regulating valve, the low-pressure gas is discharged from the air outlet pipe 2. The third on-off valve 13, the fourth on-off valve 14, the ninth on-off valve 37, and the tenth on-off valve 38 are open, and the second on-off valve 12, the seventh on-off valve 22, and the eighth on-off valve 25 are closed.

[0067] Mass flow meter air intake test, first path: The mass flow meter air enters the mass flow meter air intake pipe 5 from the mass flow meter air intake port 10. The mass flow meter air intake pipe 5 then guides the mass flow meter air intake into the high-pressure air intake pipe 3. The mass flow meter air intake is then guided through the high-pressure air intake pipe 3 into the pressure regulating valve on the fixture 6. After passing through the pressure regulating valve, the mass flow meter air intake is discharged from the air outlet pipe 2. The second on-off valve 12, the fifth on-off valve 18, the first needle valve 19, the second needle valve 20, the sixth on-off valve 21, the ninth on-off valve 37, and the tenth on-off valve 38 are open, and the first on-off valve 11, the fourth on-off valve 14, the seventh on-off valve 22, and the eighth on-off valve 25 are closed.

[0068] The second path: the mass flow meter intake air enters the mass flow meter intake pipe 5 from the mass flow meter intake port 10, the mass flow meter intake pipe 5 then introduces the mass flow meter intake air into the low-pressure intake pipe 4, the mass flow meter intake air is then introduced into the pressure regulating valve on the fixture 6 through the low-pressure intake pipe 4, and the mass flow meter intake air is discharged from the outlet pipe 2 after passing through the pressure regulating valve. The fourth switch valve 14, the fifth switch valve 18, the first needle valve 19, the second needle valve 20, the seventh switch valve 22, the ninth switch valve 37 and the tenth switch valve 38 are opened, and the second switch valve 12, the third switch valve 13, the sixth switch valve 21 and the eighth switch valve 25 are closed.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multifunctional testing device for bottled liquefied petroleum gas pressure regulating valves, characterized by: It includes an air intake manifold (1) and an air outlet pipe (2); The intake manifold (1) comprises a high-pressure intake pipe (3), a low-pressure intake pipe (4) and a mass flow meter intake pipe (5); A clamp (6) is provided between one end of the intake manifold (1) close to the outlet pipe (2) and one end of the outlet pipe (2) close to the intake manifold (1), and both ends of the clamp (6) are detachably connected to the intake manifold (1) and the outlet pipe (2), respectively; One end of the high-pressure air intake pipe (3) and one end of the low-pressure air intake pipe (4) are connected in parallel to each other and are detachably connected to the clamp (6), and the high-pressure air intake pipe (3) and the low-pressure air intake pipe (4) are respectively connected in series with the mass flow meter air intake pipe (5); The high-pressure air inlet pipe (3), the low-pressure air inlet pipe (4) and the mass flow meter air inlet pipe (5) are all provided with a plurality of valve bodies (7) for switching, and the openings of the high-pressure air inlet pipe (3), the low-pressure air inlet pipe (4) and the mass flow meter air inlet pipe (5) are respectively provided with a high-pressure air inlet (8), a low-pressure air inlet (9) and a mass flow meter air inlet (10).

2. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 1, characterized in that: The high-pressure intake pipe (3) has a first switch valve (11) and a second switch valve (12), and one end of the mass flow meter intake pipe (5) close to the high-pressure intake pipe (3) is fixedly connected to the high-pressure intake pipe (3) between the first switch valve (11) and the second switch valve (12).

3. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 1, characterized in that: The low-pressure air intake pipe (4) has a third switch valve (13) and a fourth switch valve (14), and one end of the mass flow meter air intake pipe (5) close to the low-pressure air intake pipe (4) is fixedly connected to the low-pressure air intake pipe (4) between the third switch valve (13) and the fourth switch valve (14).

4. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 1, characterized in that: The mass flow meter air inlet pipe (5) comprises a main pipe (15), a first auxiliary pipe (16) and a second auxiliary pipe (17), wherein the first auxiliary pipe (16) and the second auxiliary pipe (17) are in communication with each other, and an end of the main pipe (15) away from the mass flow meter air inlet (10) is fixedly connected to the connection between the first auxiliary pipe (16) and the second auxiliary pipe (17); The first auxiliary pipe (16) is fixedly connected to the high-pressure air intake pipe (3), and the second auxiliary pipe (17) is fixedly connected to the low-pressure air intake pipe (4).

5. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 4, characterized in that: A fifth switch valve (18) is provided on the pipeline of the main pipe (15) close to the air inlet (10) of the mass flow meter.

6. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 4, characterized in that: A first needle valve (19) and a second needle valve (20) are sequentially connected in series on the pipeline of the main pipe (15).

7. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 4, characterized in that: The first auxiliary pipe (16) and the second auxiliary pipe (17) are respectively provided with a sixth switch valve (21) and a seventh switch valve (22).

8. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 1, characterized in that: A first pressure gauge (23) and a second pressure gauge (24) are fixedly connected in the radial direction of the pipeline at the connection between the intake manifold (1) and the clamp (6); the first pressure gauge (23) is connected to an eighth switch valve (25); and the eighth switch valve (25) is close to the pipeline between the intake manifold (1) and the clamp (6).

9. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 1, characterized in that: The clamp (6) is provided with a U-shaped frame (26), a plurality of guide rods (27) are fixedly connected between two wings of the U-shaped frame (26), a plurality of guide rods (27) are sleeved with sliders (28), a clamp (6) flange interface is provided on one side of the U-shaped frame (26), the clamp (6) flange interface has a first connecting pipe (30), an end of the first connecting pipe (30) away from the slider (28) has a first flange (31), and an end of the first connecting pipe (30) away from the first flange (31) passes through one side of the U-shaped frame (26) and is close to the slider (28); The other side of the U-shaped frame (26) is provided with a fixture (6) quick-change interface, and the fixture (6) quick-change interface has a second connecting pipe (33), and the end of the second connecting pipe (33) away from the slider (28) has a second flange (34), and the end of the second connecting pipe (33) away from the second flange (34) sequentially passes through the other side of the U-shaped frame (26) and the slider (28), and the second connecting pipe (33) is fixedly connected to the slider (28); The other side of the U-shaped frame (26) is also provided with a driving shaft (35) for telescoping the slider (28).

10. The multifunctional testing device for bottled liquefied petroleum gas pressure regulating valve according to claim 1, characterized in that: The air outlet pipe (2) is sequentially connected in series with a ninth on-off valve (37) and a tenth on-off valve (38).

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