A multi-station pressure gauge testing device

Abstract

The utility model discloses a kind of multi-station pressure gauge detection devices, belong to pressure gauge detection technical field, the device includes detection pipe, detection pipe two ends are respectively equipped with first plug and second plug, first plug is equipped with air inlet pipe, second plug is equipped with air outlet pipe, air outlet pipe is provided with pressure relief valve;First baffle and second baffle are installed in detection pipe, first baffle and second baffle divide detection pipe into first pressure chamber, second pressure chamber and third pressure chamber, first installation pipe and second installation pipe for connecting pressure gauge are communicated on three pressure chambers, pressure regulating valve is provided on first baffle and second baffle, the internal pressure of first pressure chamber is greater than second pressure chamber, the internal pressure of second pressure chamber is greater than third pressure chamber;The device can detect multiple pressure gauges of different range, different interface specifications together at a time, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauge testing technology, specifically a multi-station pressure gauge testing device. Background Technology

[0002] In industrial production, scientific research, and metrology, pressure gauges are crucial instruments for measuring and indicating pressure. Their accuracy and reliability directly affect production safety, product quality, and the accuracy of experimental results. Therefore, regular testing and calibration of pressure gauges are essential to ensure their proper functioning.

[0003] Traditional pressure gauge testing methods typically involve testing each gauge individually. This means manually connecting the gauge to a pressure source, applying a standard pressure, reading and recording the gauge's value, and then comparing it to the standard value to determine if it passes. This method is not only inefficient, consuming significant manpower and time, but also cumbersome and prone to human error for batch testing.

[0004] With the increasing automation of industry and the expansion of production scale, the demand for pressure gauges is also growing, and the requirements for testing efficiency and accuracy are becoming increasingly stringent. Therefore, how to simultaneously test multiple pressure gauges, improve testing efficiency, and reduce human error has become a pressing issue in the field of pressure gauge testing.

[0005] Furthermore, pressure gauges used in different applications often have different measuring ranges and interface specifications, which poses certain challenges to the testing work. Designing a multi-station pressure gauge testing device that can adapt to the testing needs of pressure gauges with different measuring ranges and interface specifications would greatly improve the flexibility and applicability of the testing work. Utility Model Content

[0006] The purpose of this invention is to provide a multi-station pressure gauge testing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-position pressure gauge detection device, comprising a detection tube, with a first plug and a second plug respectively installed at both ends of the detection tube, an air inlet pipe installed on the first plug, an air outlet pipe installed on the second plug, and a pressure relief valve provided on the air outlet pipe;

[0008] The detection tube is equipped with a first partition and a second partition, which divide the detection tube into a first pressure chamber, a second pressure chamber, and a third pressure chamber. Each of the three pressure chambers is connected to a first installation pipe and a second installation pipe for connecting a pressure gauge. Both the first partition and the second partition are equipped with pressure regulating valves. The pressure inside the first pressure chamber is greater than that inside the second pressure chamber, and the pressure inside the second pressure chamber is greater than that inside the third pressure chamber.

[0009] Preferably, the first mounting tube is provided with internal threads, and the second mounting tube is provided with external threads.

[0010] Preferably, both the first mounting tube and the second mounting tube are provided with an inner conical surface and a bracket is fixedly connected thereto. A slide rod is slidably connected to the bracket, and a cone block is fixedly connected to the top of the slide rod. The outer conical surface of the cone block is in contact with the inner conical surface. A spring is sleeved on the slide rod, and the two ends of the spring abut against the cone block and the bracket, respectively.

[0011] Preferably, the cone block inside the first mounting tube has a protrusion at its end, and an extension rod is fixedly connected to the cone block inside the second mounting tube. A crossbar is fixedly connected to the top of the extension rod, and a slot that mates with the crossbar is provided at the threaded end of the second mounting tube. The crossbar can move synchronously with the extension rod and slide vertically in the slot.

[0012] Preferably, a first pipe and a second pipe are installed on both the first partition and the second partition. The ends of the first pipe and the second pipe are connected to a control pipe. A switching column is slidably connected inside the control pipe. The pressure regulating valve is provided on both the first pipe and the second pipe. When the switching column slides to block the first pipe, high-pressure air is discharged to the external space through the second pipe and the control pipe. When the switching column slides to block the second pipe, high-pressure air is discharged to the next pressure chamber through the first pipe and the control pipe.

[0013] Preferably, a threaded cylinder is fixedly connected to the outer wall of the detection tube, a screw is threadedly connected to the inner thread of the threaded cylinder, one end of the screw is fixedly connected to the switching column, and the other end is fixedly connected to a handle.

[0014] Preferably, it also includes a workbench, the lower surface of which is provided with legs, and the upper surface of which is fixedly connected to the detection tube by a fixing frame.

[0015] This utility model provides a multi-station pressure gauge testing device, which has the following beneficial effects:

[0016] This invention allows for the installation of pressure gauges using either a suitable first or second mounting tube, based on the gauge's interface. This ensures the pressure gauge is connected to the pressure chamber within the detection tube, with the pressure decreasing from the first to the third pressure chamber. The appropriate pressure chamber is selected based on the gauge's range. External high-pressure air enters the first pressure chamber through the inlet pipe on the first plug, and finally exits through the outlet pipe on the second plug. A pressure relief valve on the outlet pipe maintains the pressure in the third pressure chamber. This device enables the simultaneous testing of multiple pressure gauges with different ranges and interface specifications, improving testing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the external structure of the detection tube of this utility model;

[0019] Figure 3 This is a cross-sectional view of the detection tube of this utility model;

[0020] Figure 4 This is a schematic diagram of the control pipe structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the first mounting tube of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the second mounting tube of this utility model.

[0023] In the diagram: 100, workbench; 110, support leg; 120, fixed frame; 200, detection tube; 201, first pressure chamber; 202, second pressure chamber; 203, third pressure chamber; 210, first plug; 211, air inlet pipe; 220, second plug; 221, air outlet pipe; 222, pressure relief valve; 230, first partition; 240, second partition; 300, control pipe; 310, first pipe; 311, pressure regulating valve; 320, second pipe; 330, switching column; 340, screw; 350, threaded cylinder; 360, handle; 400, first mounting tube; 410, inner conical surface; 420, conical block; 430, bracket; 440, slide rod; 450, spring; 500, second mounting tube; 510, extension rod; 520, crossbar. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Reference Figures 1-6A multi-position pressure gauge testing device includes a testing tube 200, with a first plug 210 and a second plug 220 installed at both ends of the testing tube 200. An air inlet pipe 211 is installed on the first plug 210, and an air outlet pipe 221 is installed on the second plug 220. A pressure relief valve 222 is provided on the air outlet pipe 221. A first partition 230 and a second partition 240 are installed inside the testing tube 200, dividing the testing tube 200 into a first pressure chamber 201, a second pressure chamber 202, and a third pressure chamber 203. A first mounting pipe 400 and a second mounting pipe 500 for connecting pressure gauges are connected to each of the three pressure chambers. A pressure regulating valve 311 is provided on both the first partition 230 and the second partition 240. The internal pressure of the first pressure chamber 201 is greater than that of the second pressure chamber 202, and the internal pressure of the second pressure chamber 202 is greater than that of the third pressure chamber 203.

[0026] According to the interface of the pressure gauge, select the appropriate first mounting pipe 400 or second mounting pipe 500 for installation, so that the pressure gauge is connected to the pressure chamber in the detection pipe 200. The pressure decreases from the first pressure chamber 201 to the third pressure chamber 203. According to the range of the pressure gauge to be measured, select the appropriate pressure chamber to connect the pressure gauge. External high-pressure air enters the first pressure chamber 201 through the air inlet pipe 211 on the first plug 210. Finally, the high-pressure air is discharged through the air outlet pipe 221 on the second plug 220. The pressure relief valve 222 set on the air outlet pipe 221 maintains the air pressure in the third pressure chamber 203. With this device, multiple pressure gauges with different ranges and different interface specifications can be tested at the same time, improving the testing efficiency.

[0027] The first mounting tube 400 is provided with internal threads, and the second mounting tube 500 is provided with external threads.

[0028] The first mounting tube 400 and the second mounting tube 500 are used to install pressure gauges with external thread interfaces and internal thread interfaces, respectively. In actual use, the diameters of the first mounting tube 400 and the second mounting tube 500 can be customized according to requirements to adapt to the connection of pressure gauges of various diameters.

[0029] Both the first mounting tube 400 and the second mounting tube 500 are provided with an inner conical surface 410 and a bracket 430 is fixedly connected thereto. A slide rod 440 is slidably connected to the bracket 430. A cone block 420 is fixedly connected to the top of the slide rod 440. The outer conical surface of the cone block 420 fits against the inner conical surface 410. A spring 450 is sleeved on the slide rod 440. The two ends of the spring 450 abut against the cone block 420 and the bracket 430, respectively.

[0030] If no pressure gauge is installed on the corresponding first mounting pipe 400 or second mounting pipe 500, the cone block 420 will not be pushed, and the corresponding mounting pipe will be in a closed state, which will not cause pressure leakage. Thus, measurement can be carried out even when the pressure gauge is not fully loaded.

[0031] The cone 420 inside the first mounting tube 400 has a protrusion at its end. An extension rod 510 is fixedly connected to the cone 420 inside the second mounting tube 500. A crossbar 520 is fixedly connected to the top of the extension rod 510. A slot is provided at the threaded end of the second mounting tube 500 to cooperate with the crossbar 520. The crossbar 520 can move synchronously with the extension rod 510 and slide vertically in the slot.

[0032] An externally threaded pressure gauge is connected to the first mounting tube 400, and its port applies pressure to the protrusion on the corresponding cone 420, causing the cone 420 to move downward away from the corresponding inner cone surface 410. Thus, the first mounting tube 400 is connected to the detection tube 200. An internally threaded pressure gauge is connected to the second mounting tube 500. After tightening, the top of the internally threaded tube at the pressure gauge can press the crossbar 520, causing the crossbar 520 to slide into the slot, thereby pushing the corresponding cone 420 away from the inner cone surface 410. At this time, the second mounting tube 500 is connected to the detection tube 200.

[0033] First pipe 310 and second pipe 320 are installed on both the first partition 230 and the second partition 240. The ends of the first pipe 310 and the second pipe 320 are connected to a control pipe 300. A switching column 330 is slidably connected inside the control pipe 300. Pressure regulating valves 311 are provided on both the first pipe 310 and the second pipe 320. When the switching column 330 slides to block the first pipe 310, high-pressure air is discharged to the external space through the second pipe 320 and the control pipe 300. When the switching column 330 slides to block the second pipe 320, high-pressure air is discharged to the next pressure chamber through the first pipe 310 and the control pipe 300.

[0034] One end of the control pipe 300 is connected to the inside of the detection pipe 200 and the other end is connected to the external space. If it is not necessary to detect the low-range pressure gauge, for example, if the third pressure chamber 203 is not required to work, then the switching column 330 in the control pipe 300 at the control second partition 240 moves to the first pipe 310, blocking the connection between the first pipe 310 and the control pipe 300. At this time, the gas discharged from the first pressure chamber enters the control pipe 300 through the second pipe 320 and is discharged to the external space through the control pipe 300, so as not to increase the internal pressure of the third pressure chamber 203.

[0035] If the third pressure chamber 203 needs to work, the control switching column 330 slides towards the second pipe 320, blocking the connection between the second pipe 320 and the control pipe 300. As a result, the gas in the first pressure chamber is discharged into the third pressure chamber 203 through the first pipe 310 and the control pipe 300, and the third pressure chamber 203 is in operation.

[0036] A threaded cylinder 350 is fixedly connected to the outer wall of the detection tube 200. A screw 340 is connected to the internal thread of the threaded cylinder 350. One end of the screw 340 is fixedly connected to the switching column 330, and the other end is fixedly connected to the handle 360.

[0037] The screw 340 is rotated by the handle 360 ​​to drive the switching column 330 to slide, thereby controlling the connection between the first pipe 310 and the second pipe 320 and the control pipe 300. Protrusions can be set at both ends of the control pipe 300 to limit the sliding stroke of the switching column 330, and the first pipe 310 and the second pipe 320 can be blocked when the switching column 330 reaches the two ends of its stroke.

[0038] It also includes a workbench 100, the lower surface of which is provided with support legs 110, and the upper surface is fixedly connected to the detection tube 200 through a fixing bracket 120.

[0039] The workbench 100 provides overall support for the device.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-station pressure gauge testing device, characterized in that: The device includes a detection tube (200), with a first plug (210) and a second plug (220) installed at both ends of the detection tube (200). An air inlet pipe (211) is installed on the first plug (210), and an air outlet pipe (221) is installed on the second plug (220). A pressure relief valve (222) is provided on the air outlet pipe (221). The detection tube (200) is equipped with a first partition (230) and a second partition (240). The first partition (230) and the second partition (240) divide the detection tube (200) into a first pressure chamber (201), a second pressure chamber (202) and a third pressure chamber (203). Each of the three pressure chambers is connected to a first mounting tube (400) and a second mounting tube (500) for connecting a pressure gauge. Both the first partition (230) and the second partition (240) are equipped with pressure regulating valves (311). The pressure inside the first pressure chamber (201) is greater than that inside the second pressure chamber (202), and the pressure inside the second pressure chamber (202) is greater than that inside the third pressure chamber (203).

2. The multi-station pressure gauge detection device according to claim 1, characterized in that: The first mounting tube (400) is provided with internal threads, and the second mounting tube (500) is provided with external threads.

3. The multi-station pressure gauge detection device according to claim 2, characterized in that: Both the first mounting tube (400) and the second mounting tube (500) are provided with an inner conical surface (410) and a bracket (430) is fixedly connected thereto. A slide rod (440) is slidably connected to the bracket (430). A cone block (420) is fixedly connected to the top of the slide rod (440). The outer conical surface of the cone block (420) is in contact with the inner conical surface (410). A spring (450) is sleeved on the slide rod (440). The two ends of the spring (450) abut against the cone block (420) and the bracket (430) respectively.

4. The multi-station pressure gauge detection device according to claim 3, characterized in that: The first mounting tube (400) has a protrusion at the end of the cone (420), and the second mounting tube (500) has an extension rod (510) fixedly connected to the cone (420). The top of the extension rod (510) is fixedly connected to a crossbar (520). The threaded end of the second mounting tube (500) has a slot that mates with the crossbar (520). The crossbar (520) can move synchronously with the extension rod (510) and slide vertically in the slot.

5. The multi-station pressure gauge detection device according to claim 1, characterized in that: A first pipe (310) and a second pipe (320) are installed on the first partition (230) and the second partition (240). The ends of the first pipe (310) and the second pipe (320) are connected to a control pipe (300). A switching column (330) is slidably connected inside the control pipe (300). The first pipe (310) and the second pipe (320) are both equipped with the pressure regulating valve (311). When the switching column (330) slides to block the first pipe (310), high-pressure air is discharged to the external space through the second pipe (320) and the control pipe (300). When the switching column (330) slides to block the second pipe (320), high-pressure air is discharged to the next pressure chamber through the first pipe (310) and the control pipe (300).

6. The multi-station pressure gauge testing device according to claim 5, characterized in that: A threaded cylinder (350) is fixedly connected to the outer wall of the detection tube (200). A screw (340) is threadedly connected to the inner thread of the threaded cylinder (350). One end of the screw (340) is fixedly connected to the switching column (330), and the other end is fixedly connected to a handle (360).

7. The multi-station pressure gauge detection device according to claim 1, characterized in that: It also includes a workbench (100), the lower surface of which is provided with legs (110), and the upper surface is fixedly connected to the detection tube (200) through a fixing frame (120).

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