A secure traffic detection apparatus

Abstract

This application relates to the technical field of gas meter flow detection equipment, and particularly to a safe flow detection device, including an instrument base, a main gas supply pipe, and a gas meter to be tested. The main gas supply pipe supplies gas to multiple detection devices and is sealed to the gas meter's inlet. The instrument base includes a test base box and a back plate. The back plate is vertically mounted on the upper surface of the test base box and is fixedly connected to it. A flow control component is installed on the test base box. This invention, through the cooperation of a fixed base, an adjustable bracket, and a quick-connect electric cylinder, enables rapid positioning of the second connector, facilitating efficient gas meter replacement by operators, reducing replacement time, and thus improving overall detection efficiency. The pressure regulating valve in the main gas supply pipe can regulate the gas pressure, and the float flowmeter and control valve in the flow control component can precisely control the gas flow rate.

Description

Technical Field

[0001] This application relates to the technical field of gas meter flow detection equipment, and in particular to a safe flow detection device. Background Technology

[0002] Before leaving the factory, the gas meters produced need to be tested to ensure that they are usable and functioning correctly. Gas from the main compressed air pipe passes through a primary pressure regulating valve and then to the gas meter for measurement.

[0003] During the replacement of gas meters, the lack of effective positioning and quick connection devices means that workers often have to spend a lot of time finding suitable connection points and manually adjusting the alignment of the connectors with the gas meter's outlet. This process is cumbersome and inefficient. This not only increases the time cost of replacing gas meters but also affects the overall inspection progress, making it difficult to improve inspection efficiency.

[0004] Traditional gas meter detection devices lack flexible limiting and fixing structures for gas meters of different sizes. When placing the gas meter, adjustments cannot be made according to its actual size, leading to instability and potential shaking or displacement during testing, further affecting the accuracy and reliability of the detection. Furthermore, connecting and disconnecting the gas pipe from the gas meter is complex, requiring multiple tools, increasing the workload for operators and reducing ease of use. Summary of the Invention

[0005] To address the problems of cumbersome operation and poor flexibility in existing gas meter testing, this application provides a safe flow detection device.

[0006] The safe flow detection device provided in this application adopts the following technical solution: A safe flow detection device includes an instrument base, a main gas supply pipe, and a gas meter to be tested. The main gas supply pipe supplies gas to multiple detection devices and is sealed to the gas meter's inlet. The instrument base includes a test base box and a back plate. The back plate is vertically mounted on the upper surface of the test base box and is fixedly connected to the test base box. A flow control component is mounted on the test base box. The lower end of the flow control component is rotatably connected to the test base box, and a positioning frame is fixedly mounted on the head of the flow control component. The positioning frame is fixedly connected to the back plate by bolts. A gas pipe assembly is connected to the flow control component. One end of the gas pipe assembly is sealed to the flow control component, and the other end of the gas pipe assembly is sealed to the gas meter's outlet.

[0007] By adopting the above technical solution, compressed air in the testing laboratory is supplied to multiple testing devices via a main gas supply pipe, ensuring high efficiency and continuity of testing. The combined design of the instrument base's experimental base and backplate provides a stable mounting foundation for the flow control component and gas tubing assembly. The flow control component is rotatably connected to the experimental base and fixed to the backplate via a positioning bracket, allowing it to be easily flipped to a vertical position when needed, or placed horizontally when not in use, to adapt to different requirements. The gas tubing assembly connects the flow control component to the gas meter's outlet, enabling gas flow and flow detection.

[0008] Optionally, the experimental seat box includes a horizontal seat plate, a vertical plate, and a positioning box for placing a gas meter. The vertical plate is vertically fixed to one side of the horizontal seat plate, and the positioning box is fixedly installed on the other side of the horizontal seat plate.

[0009] By adopting the above technical solution, in the specific structural design of the experimental seat box, the horizontal seat plate provides stable support, the vertical plate plays the role of supporting and strengthening the structure, and the positioning box is used to place the gas meter to be tested, so that the gas meter can maintain a stable position during the testing process, which improves the accuracy of the test, and at the same time facilitates the quick positioning of the gas meter, thereby effectively improving the testing efficiency.

[0010] Optionally, a limit baffle is installed in the positioning box, and an adjusting screw for driving the limit baffle to move laterally is also installed on the side of the positioning box. The adjusting screw is threadedly connected to the positioning box, and one end of the adjusting screw is rotatably connected to the limit baffle. A guide frame is also fixedly installed on the front end face of the limit baffle.

[0011] By adopting the above technical solution, the limiting baffle and adjusting screw installed in the positioning box can drive the limiting baffle to move laterally by rotating the adjusting screw, thereby limiting and fixing gas meters of different sizes. The guide frame facilitates the insertion and removal of gas meters, improving operational convenience.

[0012] Optionally, the backrest includes a back plate, a top plate, and an air tube box. The back plate is vertically fixed to the rear side of the upper surface of the horizontal seat plate, the top plate is fixedly installed at the head of the back plate, and the air tube box is fixedly installed at the front end of the back plate.

[0013] By adopting the above technical solution, the design of the back plate, top plate and air tube box of the back seat plate provides support for the entire back seat plate, the top plate can be used to install some auxiliary equipment or play a protective role, and the air tube box is used to store air tube components, making the layout of the device more neat and avoiding the mess and tangling of air tubes.

[0014] Optionally, the gas supply main pipe includes a main pipe section, branch pipe sections, and a pressure regulating valve. The branch pipe sections are evenly installed on the main pipe section. One end of each branch pipe section is sealed to the main pipe section, and the other end of each branch pipe section is sealed to the gas inlet of the gas meter. The pressure regulating valve is installed on the branch pipe section.

[0015] By adopting the above technical solution, the gas supply main pipe is set up with a main pipe section, branch pipe sections and pressure regulating valves. The main pipe section is responsible for transporting gas, the branch pipe sections distribute the gas to the gas meters of each detection device, and the pressure regulating valves can adjust the gas pressure entering the gas meters, ensuring the stability of gas pressure during the detection process and improving the accuracy of the detection results.

[0016] Optionally, the flow control assembly includes a tilting plate and a float flow meter. The tilting plate is mounted on a horizontal base plate, and one end of the tilting plate is rotatably connected to the horizontal base plate. The float flow meter is fixedly mounted on the upper surface of the tilting plate, and a control valve is also mounted on the float flow meter.

[0017] By adopting the above technical solution, the combination of the tilting plate and the float flow meter in the flow control component allows the tilting plate to rotate, facilitating the adjustment of the position and angle of the float flow meter. The float flow meter can display the gas flow rate in real time, and the control valve can precisely control the gas flow rate to meet the flow requirements under different detection conditions.

[0018] Optionally, the positioning frame includes a base, a long support rod, and a fixing frame for fixing the head of the float flowmeter. The back plate has positioning holes for fixing the base. There are two sets of long support rods, with one end of the long support rod fixed to the front end of the base and the fixing frame fixedly installed at the other end of the long support rod.

[0019] By adopting the above technical solution, the structure of the positioning frame, the long support rod, and the fixing frame is such that the frame is fixed to the back plate through positioning holes, the long support rod connects the frame to the fixing frame, and the fixing frame is used to fix the head of the float flowmeter, which ensures the stability of the float flowmeter and avoids shaking during the test, thus affecting the test results.

[0020] Optionally, the gas tubing assembly includes an auxiliary hose, a first connector, a second connector, and a connecting cap. The first connector and the second connector are respectively sealed at both ends of the auxiliary hose. The first connector is sealed to the inlet of the float flowmeter, and the second connector is threaded to the gas meter. The connecting cap is sleeved on the second connector, and a quick-release wrench is slidably installed at the front end of the connecting cap.

[0021] By adopting the above technical solution, the auxiliary hose, first connector, second connector, and connecting cap of the gas tubing assembly are designed so that the auxiliary hose has a certain degree of flexibility, facilitating connection and position adjustment. The first and second connectors are respectively sealed to the float flow meter and the gas meter, ensuring gas tightness. The connecting cap and quick-release wrench facilitate the connection and disassembly of the gas tubing assembly to the gas meter, improving operational efficiency.

[0022] Optionally, it also includes a fixed base, the front end of which is equipped with an adjustable bracket that can slide laterally, the front end of which is equipped with a movable tube frame for adjusting the position of the second connector, one end of which is slidably mounted on the adjustable bracket, and a quick-connect electric cylinder for driving the movable tube frame to rise and fall is also fixedly mounted on the adjustable bracket, and one end of which is fixedly connected to the second connector.

[0023] By adopting the above technical solution, the combination of a fixed base, an adjustable bracket, and a movable pipe rack allows the adjustable bracket to slide laterally on the fixed base, and the movable pipe rack to slide on the adjustable bracket and be raised and lowered via a quick-connect electric cylinder. Through the cooperation of these components, the second connector can be easily and quickly positioned and accurately pressed onto the gas meter. The operator only needs to rotate the connecting cap to lock the connection, greatly improving the speed of gas meter replacement and thus increasing testing efficiency. Furthermore, it can meet the connection requirements of different gas meters.

[0024] Optionally, the adjustable bracket includes a movable shell, an extension rod, and a longitudinal seat for sliding installation of the movable tube frame. The tail of the movable shell is slidably installed on the fixed seat, and the movable shell is provided with a first locking bolt that locks with the fixed seat. The extension rod is slidably installed on the head of the movable shell, and the movable shell is provided with a second locking bolt that locks with the extension rod. The longitudinal seat is vertically fixed to the outer end of the extension rod.

[0025] By adopting the above technical solution, the adjustable support's movable housing, extension rod, and longitudinal seat structure allows the movable housing to slide on the fixed seat and be locked by the first locking bolt. The extension rod can slide inside the movable housing and be locked by the second locking bolt. The longitudinal seat provides a base for the sliding and installation of the movable tube rack. This design enables the adjustable support to be flexibly adjusted according to different testing requirements, further improving the applicability and ease of operation of the device.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The invention, through the cooperation of a fixed base, an adjustable bracket, and a quick-connect electric cylinder, enables rapid positioning of the second connector, facilitating efficient replacement of gas meters by workers and reducing replacement time, thereby improving overall testing efficiency. The pressure regulating valve in the main gas supply pipe can regulate the gas pressure, and the float flowmeter and control valve in the flow control assembly can precisely control the gas flow, ensuring the stability of gas pressure and flow during testing and improving the accuracy of test results. The limit baffle and adjusting screw in the positioning box can limit and fix gas meters of different sizes, and the connecting cap and quick-release wrench of the gas pipe assembly facilitate the connection and disassembly of the gas pipe and gas meter. The overall structural design of the device allows operators to operate more easily, reducing labor intensity. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a perspective view of the device of the present invention without a main gas supply pipe; Figure 3 yes Figure 2 A front view of the device shown; Figure 4 yes Figure 3 The diagram shows the structure of the device when the flow control component is placed horizontally. Figure 5 This is a perspective view of the instrument stand in an embodiment of the present invention; Figure 6 This is a perspective view of the control flow component and the positioning frame cooperating in an embodiment of the present invention; Figure 7 yes Figure 6 Side view of the device shown; Figure 8 This is a perspective view of the tracheal assembly, fixed base, adjustable bracket, and movable tube frame in an embodiment of the present invention. Figure 9 This is a perspective view of the tracheal assembly in an embodiment of the present invention; Figure 10 yes Figure 9 A front view of the device shown; Figure 11 This is a perspective view of the fixed base, adjustable bracket, and movable tube frame in an embodiment of the present invention. Figure 12 yes Figure 11 Side view of the device shown.

[0028] In the diagram: 1. Instrument base; 10. Gas meter; 11. Experimental seat box; 111. Horizontal seat plate; 112. Vertical plate; 113. Positioning box; 12. Back seat plate; 121. Back plate; 122. Top plate; 123. Gas pipe box; 13. Limiting baffle; 131. Guide frame; 14. Adjusting screw; 2. Gas supply main pipe; 21. Main pipe section; 22. Branch pipe section; 23. Pressure regulating valve; 3. Flow control assembly; 31. Flip plate; 32. Float flow meter 321. Control valve; 4. Positioning frame; 41. Frame base; 42. Long frame rod; 43. Fixing frame; 5. Air pipe assembly; 51. Auxiliary hose; 52. First connector; 53. Second connector; 54. Connecting cap; 541. Quick wrench lever; 6. Fixing seat; 7. Adjustable bracket; 71. Moving shell; 711. First locking bolt; 72. Extension rod; 721. Second locking bolt; 73. Longitudinal seat; 8. Movable tube rack; 81. Quick-connect electric cylinder. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] This application discloses a safe flow detection device. (Refer to...) Figure 1 , Figure 2 and Figure 3 A safe flow detection device includes an instrument base 1, a main gas supply pipe 2, and a gas meter 10 to be tested. The main gas supply pipe 2 supplies gas to multiple detection devices and is sealed to the air inlet of the gas meter 10. The instrument base 1 includes a test base box 11 and a back plate 12. The back plate 12 is vertically mounted on the upper surface of the test base box 11 and is fixedly connected to the test base box 11. A flow control component 3 is installed on the test base box 11. The lower end of the flow control component 3 is rotatably connected to the test base box 11, and a positioning frame 4 is fixedly installed at the head of the flow control component 3. The positioning frame 4 is fixedly connected to the back plate 12 by bolts. An air pipe assembly 5 is connected to the flow control component 3. One end of the air pipe assembly 5 is sealed to the flow control component 3, and the other end is sealed to the air outlet of the gas meter 10 to be tested. Compressed air in the testing laboratory is supplied to multiple detection devices through the main gas supply pipe 2, ensuring the efficiency and continuity of the testing. The combined design of the experimental base box 11 and backrest plate 12 of the instrument base 1 provides a stable mounting foundation for the flow control component 3 and the gas tubing component 5. The flow control component 3 is rotatably connected to the experimental base box 11 and fixed to the backrest plate 12 by the positioning bracket 4, allowing it to be flipped to a vertical position when needed or placed horizontally when not in use to adapt to different needs. The gas tubing component 5 connects the flow control component 3 to the gas outlet of the gas meter 10, realizing gas flow and flow detection.

[0031] Reference Figure 3 , Figure 4 and Figure 5 The experimental test chamber 11 includes a horizontal seat plate 111, a vertical plate 112, and a positioning box 113 for placing the gas meter 10. The vertical plate 112 is vertically fixed to one side of the horizontal seat plate 111, and the positioning box 113 is fixedly installed on the other side of the horizontal seat plate 111. In the specific structural design of the experimental test chamber 11, the horizontal seat plate 111 provides stable support, the vertical plate 112 serves to support and strengthen the structure, and the positioning box 113 is used to place the gas meter 10 to be tested, ensuring that the gas meter 10 maintains a stable position during the testing process, improving the accuracy of the test, and facilitating quick positioning of the gas meter 10, thereby effectively improving the testing efficiency. A limiting baffle 13 is installed in the positioning box 113, and an adjusting screw 14 for driving the limiting baffle 13 to move laterally is also installed on the side of the positioning box 113. The adjusting screw 14 is threadedly connected to the positioning box 113, and one end of the adjusting screw 14 is rotatably connected to the limiting baffle 13. A guide frame 131 is also fixedly installed on the front end face of the limiting baffle 13. The limiting baffle 13 and adjusting screw 14 installed in the positioning box 113 can drive the limiting baffle 13 to move laterally by rotating the adjusting screw 14, thereby limiting and fixing gas meters 10 of different sizes. The guide frame 131 facilitates the insertion and removal of the gas meter 10, improving the convenience of operation. The backrest plate 12 includes a back plate 121, a top plate 122, and an air tube box 123. The back plate 121 is vertically fixed to the rear side of the upper surface of the horizontal seat plate 111. The top plate 122 is fixedly installed at the head of the back plate 121, and the air tube box 123 is fixedly installed at the front end of the back plate 121. The back plate 121 provides support for the entire backrest plate 12. The top plate 122 can be used to install auxiliary equipment or provide protection. The air tube box 123 is used to store the air tube assembly 5, making the layout of the device neater and avoiding the mess and tangling of the air tubes.

[0032] Reference Figure 1 The gas supply main pipe 2 includes a main pipe section 21, branch pipe sections 22, and a pressure regulating valve 23. Branch pipe sections 22 are evenly installed on the main pipe section 21. One end of each branch pipe section 22 is sealed to the main pipe section 21, and the other end is sealed to the gas inlet of the gas meter 10. The pressure regulating valve 23 is installed on the branch pipe section 22. The main pipe section 21, branch pipe sections 22, and pressure regulating valve 23 of the gas supply main pipe 2 are configured such that the main pipe section 21 is responsible for supplying gas, the branch pipe sections 22 distribute the gas to the gas meters 10 of each detection device, and the pressure regulating valve 23 can adjust the gas pressure entering the gas meter 10, ensuring the stability of the gas pressure during the detection process and improving the accuracy of the detection results.

[0033] Reference Figure 6 and Figure 7The flow control assembly 3 includes a tilting plate 31 and a float flow meter 32. The tilting plate 31 is mounted on a horizontal base plate 111, and one end of the tilting plate 31 is rotatably connected to the horizontal base plate 111. The float flow meter 32 is fixedly mounted on the upper surface of the tilting plate 31, and a control valve 321 is also installed on the float flow meter 32. The combination of the tilting plate 31 and the float flow meter 32 in the flow control assembly 3 allows the tilting plate 31 to rotate, facilitating the adjustment of the position and angle of the float flow meter 32. The float flow meter 32 can display the gas flow rate in real time, and the control valve 321 can precisely control the gas flow rate to meet the flow requirements under different detection conditions. The positioning frame 4 includes a base 41, a long support rod 42, and a fixing frame 43 for fixing the head of the float flowmeter 32. The back plate 121 has positioning holes for fixing the base 41. Two sets of long support rods 42 are provided, with one end of each rod fixed to the front end of the base 41, and the fixing frame 43 fixedly installed at the other end of the long support rod 42. The structure of the base 41, long support rod 42, and fixing frame 43 of the positioning frame 4 is such that the base 41 is fixed to the back plate 121 through the positioning holes, the long support rod 42 connects the base 41 to the fixing frame 43, and the fixing frame 43 is used to fix the head of the float flowmeter 32, ensuring the stability of the float flowmeter 32 and preventing shaking during testing, which would affect the test results.

[0034] Reference Figure 9 and Figure 10 The gas hose assembly 5 includes an auxiliary hose 51, a first connector 52, a second connector 53, and a connecting cap 54. The first connector 52 and the second connector 53 are respectively sealed at both ends of the auxiliary hose 51. The first connector 52 is sealed to the inlet of the float flowmeter 32, and the second connector 53 is threadedly sealed to the gas meter 10. The connecting cap 54 is fitted onto the second connector 53, and a quick-release wrench 541 is slidably mounted on the front end of the connecting cap 54. The design of the auxiliary hose 51, first connector 52, second connector 53, and connecting cap 54 in the gas hose assembly 5 provides the auxiliary hose 51 with a certain degree of flexibility, facilitating connection and position adjustment. The first connector 52 and the second connector 53 are sealed to the float flowmeter 32 and the gas meter 10 respectively, ensuring gas tightness. The connecting cap 54 and the quick-release wrench 541 facilitate the connection and disassembly of the gas hose assembly 5 and the gas meter 10, improving operational efficiency.

[0035] Reference Figure 8 , Figure 11 and Figure 12The system also includes a fixed base 6, with a laterally sliding adjustable bracket 7 mounted on its front end. A movable tube frame 8 for adjusting the position of the second connector 53 is mounted on the front end of the adjustable bracket 7. One end of the movable tube frame 8 is slidably mounted on the adjustable bracket 7, and a quick-connect electric cylinder 81 for driving the movable tube frame 8 to rise and fall is fixedly mounted on the adjustable bracket 7. One end of the movable tube frame 8 is fixedly connected to the second connector 53. The combination of the fixed base 6, the adjustable bracket 7, and the movable tube frame 8 allows the adjustable bracket 7 to slide laterally on the fixed base 6, and the movable tube frame 8 to slide on the adjustable bracket 7 and rise and fall via the quick-connect electric cylinder 81. Through the cooperation of these components, the second connector 53 can be easily and quickly positioned and accurately pressed onto the gas meter 10. The operator only needs to rotate the connecting cap 54 to complete the connection locking, greatly improving the speed of replacing the gas meter 10, thereby increasing detection efficiency and meeting the connection requirements of different gas meters 10.

[0036] Reference Figure 11 and Figure 12 The adjustable bracket 7 includes a movable housing 71, an extension rod 72, and a longitudinal seat 73 for sliding installation of the movable tube rack 8. The tail of the movable housing 71 is slidably mounted on the fixed seat 6, and a first locking bolt 711 is provided on the movable housing 71 to lock with the fixed seat 6. The extension rod 72 is slidably mounted on the head of the movable housing 71, and a second locking bolt 721 is provided on the movable housing 71 to lock with the extension rod 72. The longitudinal seat 73 is vertically fixed to the outer end of the extension rod 72. The structure of the movable housing 71, extension rod 72, and longitudinal seat 73 of the adjustable bracket 7 allows the movable housing 71 to slide on the fixed seat 6 and be locked by the first locking bolt 711. The extension rod 72 can slide inside the movable housing 71 and be locked by the second locking bolt 721. The longitudinal seat 73 provides a base for sliding and installing the movable tube rack 8. This design allows the adjustable bracket 7 to be flexibly adjusted according to different testing requirements, further improving the applicability and ease of operation of the device.

[0037] like Figure 1 As shown, to ensure effective positioning and quick connection between the branch pipe section 22 and the gas inlet of the gas meter 10, a set of fixed base 6, adjustable bracket 7, and movable pipe support 8 can be installed on the gas inlet of the gas meter 10. Through the combination of the fixed base 6, adjustable bracket 7, and movable pipe support 8, the adjustable bracket 7 can slide laterally on the fixed base 6, and the movable pipe support 8 can slide on the adjustable bracket 7 and be raised and lowered via the quick-connect electric cylinder 81. Furthermore, a mating joint that seals with the branch pipe section 22 is provided on the new movable pipe support 8 to ensure a stable gas supply to the gas meter 10.

[0038] The implementation principle of the safe flow detection device in this application embodiment is as follows: The placement width in the positioning box 113 is adjusted according to the size of the gas meter 10 to be tested. The limiting baffle 13 is moved laterally by rotating the adjusting screw 14, ensuring stable positioning and placement of the gas meter 10, facilitating rapid replacement of gas meters 10 in the same batch. The position of the adjustable bracket 7 is adjusted by sliding the movable housing 71 and the extension rod 72, and locking them using the first locking bolt 711 and the second locking bolt 721, so that the second connector 53 on the movable pipe rack 8 is approximately aligned with the gas outlet of the gas meter 10. The quick-connect electric cylinder 81 is activated, driving the movable pipe rack 8 to descend, pressing the second connector 53 onto the gas outlet of the gas meter 10. The operator rotates the connecting cap 54, and uses the quick-release wrench 541 to thread-seal the second connector 53 to the gas meter 10.

[0039] Connect the branch pipe 22 of the main gas supply pipe 2 to the gas inlet of the gas meter 10 in a sealed manner. Open the pressure regulating valve 23 to adjust the gas pressure entering the gas meter 10. Open the control valve 321 on the float flowmeter 32 to allow gas to enter the gas meter 10 through the main gas supply pipe 2, and then enter the float flowmeter 32 through the gas pipe assembly 5. Observe the flow data displayed by the float flowmeter 32 to perform flow detection of the gas meter 10.

[0040] After the test is completed, rotate the connecting cap 54 in the opposite direction to loosen the connection between the second connector 53 and the gas meter 10. Start the quick-connect electric cylinder 81 to drive the movable pipe rack 8 to rise and remove the gas meter 10 from the positioning box 113. Replace the next gas meter to be tested and repeat the above test steps.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safety flow detection device, comprising an instrument seat (1), a gas supply main (2) for supplying gas to a plurality of detection devices, and a gas meter (10) to be detected, the gas supply main (2) being in sealed connection with a gas inlet of the gas meter (10), characterized in that: The instrument base (1) includes an experimental base box (11) and a back seat plate (12). The back seat plate (12) is vertically installed on the upper surface of the experimental base box (11) and is fixedly connected to the experimental base box (11). A flow control component (3) is installed on the experimental base box (11). The lower end of the flow control component (3) is rotatably connected to the experimental base box (11). A positioning frame (4) is fixedly installed on the head of the flow control component (3). The positioning frame (4) is fixedly connected to the back seat plate (12) by bolts. A gas pipe component (5) is connected to the flow control component (3). One end of the gas pipe component (5) is sealed to the flow control component (3), and the other end of the gas pipe component (5) is sealed to the gas outlet of the gas meter (10) to be tested. ​ 2. The safe flow detection device according to claim 1, characterized in that: The experimental seat box (11) includes a horizontal seat plate (111), a vertical plate (112), and a positioning box (113) for placing a gas meter (10). The vertical plate (112) is vertically fixed on one side of the horizontal seat plate (111), and the positioning box (113) is fixedly installed on the other side of the horizontal seat plate (111).

3. The safe flow detection device according to claim 2, characterized in that: The positioning box (113) is equipped with a limit baffle (13), and an adjusting screw (14) for driving the limit baffle (13) to move laterally is also installed on the side of the positioning box (113). The adjusting screw (14) is threadedly connected to the positioning box (113), and one end of the adjusting screw (14) is rotatably connected to the limit baffle (13). A guide frame (131) is also fixedly installed on the front end face of the limit baffle (13).

4. The safe flow detection device according to claim 3, characterized in that: The backrest plate (12) includes a back plate (121), a top plate (122), and an air tube box (123). The back plate (121) is vertically fixed to the rear side of the upper end face of the horizontal seat plate (111). The top plate (122) is fixedly installed on the head of the back plate (121), and the air tube box (123) is fixedly installed on the front end face of the back plate (121).

5. A safe flow detection device according to claim 4, characterized in that: The main gas supply pipe (2) includes a main pipe section (21), branch pipe sections (22) and a pressure regulating valve (23). The branch pipe sections (22) are evenly installed on the main pipe section (21). One end of the branch pipe section (22) is sealed to the main pipe section (21), and the other end of the branch pipe section (22) is sealed to the gas inlet of the gas meter (10). The pressure regulating valve (23) is installed on the branch pipe section (22).

6. A safe flow detection device according to claim 5, characterized in that: The flow control assembly (3) includes a tilting plate (31) and a float flow meter (32). The tilting plate (31) is mounted on a horizontal seat plate (111), and one end of the tilting plate (31) is rotatably connected to the horizontal seat plate (111). The float flow meter (32) is fixedly mounted on the upper surface of the tilting plate (31), and a control valve (321) is also mounted on the float flow meter (32).

7. A safe flow detection device according to claim 6, characterized in that: The positioning frame (4) includes a frame base (41), a long frame rod (42), and a fixing frame (43) for fixing the head of the float flowmeter (32). The back plate (121) has a positioning hole for fixing the frame base (41). There are two sets of long frame rods (42), and one end of the long frame rod (42) is fixed to the front end face of the frame base (41). The fixing frame (43) is fixedly installed at the other end of the long frame rod (42).

8. A safe flow detection device according to claim 7, characterized in that: The gas tube assembly (5) includes an auxiliary hose (51), a first connector (52), a second connector (53), and a connecting cap (54). The first connector (52) and the second connector (53) are respectively sealed at both ends of the auxiliary hose (51). The first connector (52) is sealed to the inlet of the float flowmeter (32), and the second connector (53) is threaded to the gas meter (10). The connecting cap (54) is sleeved on the second connector (53), and a quick wrench lever (541) is slidably installed at the front end of the connecting cap (54).

9. A safe flow detection device according to claim 8, characterized in that: It also includes a fixed base (6), the front end of which is equipped with an adjustable bracket (7) that can slide laterally, the front end of which is equipped with a movable tube frame (8) for adjusting the position of the second connector (53), one end of which is slidably mounted on the adjustable bracket (7), and a quick-connect electric cylinder (81) for driving the movable tube frame (8) to rise and fall is also fixedly mounted on the adjustable bracket (7), and one end of which is fixedly connected to the second connector (53).

10. A safe flow detection device according to claim 9, characterized in that: The adjustable bracket (7) includes a movable shell (71), an extension rod (72), and a longitudinal seat (73) for sliding installation of the movable tube frame (8). The tail of the movable shell (71) is slidably installed on the fixed seat (6), and the movable shell (71) is provided with a first locking bolt (711) that locks with the fixed seat (6). The extension rod (72) is slidably installed on the head of the movable shell (71), and the movable shell (71) is provided with a second locking bolt (721) that locks with the extension rod (72). The longitudinal seat (73) is vertically fixed to the outer end of the extension rod (72).

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