Flowmeter fixing seat convenient to install

Abstract

The utility model belongs to the technical field of flowmeter installation, and particularly relates to a flowmeter fixing seat convenient to install, which comprises a fixing seat and a connecting pipe fixedly communicated with one side of a gas filling machine, the top of the connecting pipe is provided with an installation port, the top of the fixing seat is provided with a through hole, and the connecting seat is slidably sleeved in the through hole. The flowmeter body is fixedly sleeved with the connecting base, and sealing and fixing mechanisms are arranged among the mounting opening, the fixing base, the connecting base and the through hole. The sealing device is reasonable in structural design, through the sealing and fixing mechanism, the fixing base can be fixed in the installation opening, meanwhile, the connecting base can be fixed in the through hole, meanwhile, the expanded inner sealing air bag and the expanded outer sealing air bag can be tightly attached to the outer side of the connecting base and the inner side of the installation opening respectively, and therefore the sealing effect can be achieved; the gas leakage is prevented from influencing the precision of gas flow measurement, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of flowmeter installation, in particular to a flowmeter fixing seat with convenient installation. Background Art

[0002] A gas dispenser refers to a gas filling device that provides fuel to natural gas vehicles (NGVs) and large CNG sub-station vehicles in the form of compressed natural gas (CNG). The gas in the natural gas pipeline generally undergoes pre-treatment purification first to remove sulfur and moisture in the gas, and then the compressor unit compresses the pressure from 0.1 - 1.0 Mpa to 25 Mpa, and finally fills the vehicle with gas through the dispenser. A flowmeter needs to be installed on the pipeline of the gas dispenser for measuring the gas flow.

[0003] However, when installing the flowmeter in the related art, a fixing seat is generally required, but the installation between the fixing seat and the pipeline is rather troublesome and inconvenient. At the same time, the sealing performance of the connection between the fixing seat and the pipeline, as well as the connection between the flowmeter and the fixing seat, cannot be guaranteed, and air leakage is likely to occur, affecting the measurement accuracy of the flowmeter. Therefore, we propose a flowmeter fixing seat with convenient installation to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages and propose a flowmeter fixing seat with convenient installation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A flowmeter fixing seat with convenient installation includes a fixing seat and a connecting pipe fixedly connected to one side of the gas dispenser. An installation opening is provided at the top of the connecting pipe, a through hole is provided at the top of the fixing seat, a connecting seat is slidably sleeved in the through hole, and a flowmeter body is fixedly sleeved in the connecting seat. A sealing and fixing mechanism is arranged between the installation opening, the fixing seat, the connecting seat and the through hole, and the sealing and fixing mechanism includes a sealing and fixing component and an inflation component.

[0007] Preferably, the sealing and fixing component includes an outer sealing airbag fixedly sleeved on the outer side of the fixing seat and an inner sealing airbag fixedly connected in the through hole. An annular air cavity is provided in the fixing seat, and a plurality of air filling pipes are fixedly communicated with the bottom inner wall of the annular air cavity. The bottom ends of the plurality of air filling pipes are respectively communicated with the corresponding outer sealing airbag and inner sealing airbag.

[0008] Preferably, an exhaust pipe is fixedly communicated with the top inner wall of the annular air cavity, and a control valve is arranged on the exhaust pipe.

[0009] Preferably, the outer sealing airbag is slidably connected in the mounting opening, and the connecting seat is slidably sleeved in the inner sealing airbag.

[0010] Preferably, the inflation assembly includes a cylinder fixedly connected to the top of the fixed seat. There is a supply pipe fixedly communicating between the bottom of the cylinder and the annular air chamber. One side bottom of the cylinder is fixedly communicated with an intake pipe. A sliding disk is slidably sleeved in the cylinder. A rubber sleeve is fixedly sleeved on the outer side of the sliding disk. The rubber sleeve is slidably and sealingly sleeved in the cylinder. A piston rod and a return spring are fixedly connected to the top of the sliding disk. The top end of the return spring is fixedly connected to the inner wall of the top of the cylinder.

[0011] Preferably, a connecting rod is rotatably connected to the front side of the piston rod. A handle is rotatably connected to the rear side of the connecting rod. A support plate is fixedly connected to the top of the cylinder. The handle is rotatably connected to the front side of the support plate.

[0012] Preferably, a check valve one is arranged in the intake pipe, and a check valve two is arranged in the supply pipe.

[0013] Preferably, four screws one are threadedly connected to the top of the fixed seat. The fixed seat is fixedly connected to the top of the connecting pipe through the four screws one. Two screws two are threadedly connected to the top of the connecting seat. The connecting seat is fixedly connected to the top of the fixed seat through the two screws two.

[0014] In the present utility model, for the flowmeter fixing seat with convenient installation, the fixed seat is sleeved in the mounting opening, and the connecting seat is sleeved in the through hole. Continuously press down the handle. The handle drives the connecting rod and the piston rod to move upward. The piston rod drives the sliding disk and the rubber sleeve to move upward and compress the return spring. Under the diversion of the check valve one and the check valve two, the outside air is drawn into the cylinder. Release the handle. Under the elastic force of the return spring, the sliding disk and the rubber sleeve move downward to press the air in the cylinder into the supply pipe, the annular air chamber and multiple inflation pipes, and finally enter the inner sealing airbag and the outer sealing airbag to inflate them and make them expand. By continuously pressing down the handle, the inner sealing airbag and the outer sealing airbag can be inflated to a full state. Then, under the action of the expanded inner sealing airbag and outer sealing airbag, not only can the fixed seat be fixed in the mounting opening, but also the connecting seat can be fixed in the through hole. At the same time, the expanded inner sealing airbag and outer sealing airbag can respectively closely fit on the outer side of the connecting seat and the inner side of the mounting opening, so as to achieve a sealing effect.

[0015] In the present utility model, for the flowmeter fixing seat with convenient installation, the fixing seat is fixed again by a pair of screws, and the connecting seat is fixed again by a second screw, greatly improving the stability of the installation of the fixing seat, the connecting seat and the flowmeter body. When disassembly and maintenance are required, loosen the first screw and the second screw, and at the same time open the exhaust pipe through the control valve, and the air in the inner sealing airbag and the outer sealing airbag can be discharged through the charging pipe, the annular air chamber and the exhaust pipe, so that it retracts and does not fix the fixing seat and the connecting seat. At this time, the fixing seat, the connecting seat and the flowmeter body can be disassembled for maintenance work;

[0016] The structure design of the present utility model is reasonable. Through the sealing and fixing mechanism, not only can the fixing seat be fixed in the installation port, but also the connecting seat can be fixed in the through hole. At the same time, the expanded inner sealing airbag and outer sealing airbag can be tightly attached to the outside of the connecting seat and the inside of the installation port respectively, so as to achieve a sealing effect and avoid gas leakage from affecting the accuracy of air flow measurement, with high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a flowmeter fixing seat with convenient installation proposed by the present utility model;

[0018] Figure 2 is a partial cross-sectional view of a flowmeter fixing seat with convenient installation proposed by the present utility model;

[0019] Figure 3 is Figure 1 a schematic structural diagram of part A in;

[0020] Figure 4 is Figure 1 a schematic structural diagram of part B in;

[0021] Figure 5 is Figure 2 a schematic structural diagram of part C in;

[0022] Figure 6 is Figure 2 a schematic structural diagram of part D in.

[0023] In the figure: 1, gas dispenser; 2, connecting pipe; 3, fixing seat; 4, connecting seat; 5, flowmeter body; 6, air cylinder; 7, first screw; 8, piston rod; 9, connecting rod; 10, support plate; 11, handle; 12, return spring; 13, exhaust pipe; 14, control valve; 15, second screw; 16, installation port; 17, through hole; 18, inner sealing airbag; 19, outer sealing airbag; 20, charging pipe; 21, annular air chamber; 22, rubber sleeve; 23, sliding disc; 24, intake pipe; 25, supply pipe; 26, check valve II; 27, check valve I. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Referring to Figures 1-6 , a flowmeter fixing seat with convenient installation, including a fixing seat 3 and a connecting pipe 2 fixedly connected to one side of a gas dispenser 1. An installation opening 16 is formed at the top of the connecting pipe 2, and a through hole 17 is formed at the top of the fixing seat 3. A connecting seat 4 is slidably sleeved in the through hole 17. A flowmeter body 5 is fixedly sleeved in the connecting seat 4. A sealing and fixing mechanism is arranged between the installation opening 16, the fixing seat 3, the connecting seat 4 and the through hole 17. The sealing and fixing mechanism includes a sealing and fixing component and an inflation component.

[0026] As a further improvement of the present invention, the sealing and fixing component includes an outer sealing airbag 19 fixedly sleeved outside the fixing seat 3 and an inner sealing airbag 18 fixedly connected in the through hole 17. An annular air chamber 21 is formed in the fixing seat 3. A plurality of air supply pipes 20 are fixedly connected to the bottom inner wall of the annular air chamber 21. The bottom ends of the plurality of air supply pipes 20 are respectively communicated with the corresponding outer sealing airbag 19 and inner sealing airbag 18. The outer sealing airbag 19 is slidably connected in the installation opening 16, and the connecting seat 4 is slidably sleeved in the inner sealing airbag 18.

[0027] As a further improvement of the present invention, an exhaust pipe 13 is fixedly connected to the top inner wall of the annular air chamber 21, and a control valve 14 is arranged on the exhaust pipe 13, which is beneficial for exhausting air and making the inner sealing airbag 18 and the outer sealing airbag 19 retract.

[0028] As a further improvement of the present invention, the inflation component includes an air cylinder 6 fixedly connected to the top of the fixing seat 3. A supply pipe 25 is fixedly connected between the bottom of the air cylinder 6 and the annular air chamber 21. An air inlet pipe 24 is fixedly connected to the bottom of one side of the air cylinder 6. A sliding disk 23 is slidably sleeved in the air cylinder 6. A rubber sleeve 22 is fixedly sleeved outside the sliding disk 23. The rubber sleeve 22 is slidably and sealingly sleeved in the air cylinder 6. A piston rod 8 and a return spring 12 are fixedly connected to the top of the sliding disk 23. The top end of the return spring 12 is fixedly connected to the top inner wall of the air cylinder 6. A connecting rod 9 is rotatably connected to the front side of the piston rod 8. A handle 11 is rotatably connected to the rear side of the connecting rod 9. A support plate 10 is fixedly connected to the top of the air cylinder 6. The handle 11 is rotatably connected to the front side of the support plate 10.

[0029] Adopt the above solution: Put the fixed seat 3 into the installation port 16, and put the connecting seat 4 into the through hole 17. Continuously press down the handle 11, which drives the connecting rod 9 and the piston rod 8 to move upward. The piston rod 8 drives the sliding disc 23 and the rubber sleeve 22 to move upward and compress the return spring 12, so that the outside air is drawn into the air cylinder 6. Release the handle 11, and under the elastic force of the return spring 12, the sliding disc 23 and the rubber sleeve 22 move downward, and the air in the air cylinder 6 can be pressed into the air supply pipe 25, the annular air cavity 21 and multiple inflation pipes 20, and finally enter the inner sealing airbag 18 and the outer sealing airbag 19 to inflate them and make them expand. By continuously pressing down the handle 11, the inner sealing airbag 18 and the outer sealing airbag 19 can be inflated to a full state. Then, under the action of the inflated inner sealing airbag 18 and outer sealing airbag 19, not only can the fixed seat 3 be fixed in the installation port 16, but also the connecting seat 4 can be fixed in the through hole 17. At the same time, the inflated inner sealing airbag 18 and outer sealing airbag 19 can be closely attached to the outside of the connecting seat 4 and the inside of the installation port 16 respectively, so as to achieve a sealing effect.

[0030] As a further improvement of the present utility model, a check valve one 27 is arranged in the air inlet pipe 24, and a check valve two 26 is arranged in the air supply pipe 25, which can guide the flow of gas, so that the outside gas can only enter the air cylinder 6 from the air inlet pipe 24, and the air in the air cylinder 6 can only be discharged from the air supply pipe 25.

[0031] As a further improvement of the present utility model, four screws one 7 are threadedly connected to the top of the fixed seat 3, and the fixed seat 3 is fixedly connected to the top of the connecting pipe 2 through the four screws one 7. Two screws two 15 are threadedly connected to the top of the connecting seat 4, and the connecting seat 4 is fixedly connected to the top of the fixed seat 3 through the two screws two 15.

[0032] Adopt the above solution: Fix the fixed seat 3 again through the screw one 7, and fix the connecting seat 4 again through the screw two 15, which greatly improves the stability of the installation of the fixed seat 3, the connecting seat 4 and the flowmeter body 5.

[0033] In the present utility model, during installation, the fixing base 3 is sleeved in the installation port 16, and the outer sealing airbag 19 is abutted against the installation port 16. At the same time, the connecting base 4 is sleeved in the through hole 17 and abutted against the inner sealing airbag 18. Then, the handle 11 is continuously pressed down. The handle 11 drives the connecting rod 9 and the piston rod 8 to move upward. The piston rod 8 drives the sliding disk 23 and the rubber sleeve 22 to move upward and compress the return spring 12. Under the diversion of the check valve I 27 and the check valve II 26, the outside air is drawn into the air cylinder 6. When the handle 11 is released, at this time, under the elastic force of the return spring 12, the sliding disk 23 and the rubber sleeve 22 move downward, and the air in the air cylinder 6 can be pressed into the air supply pipe 25, the annular air cavity 21 and the plurality of air filling pipes 20, and finally enter the inner sealing airbag 18 and the outer sealing airbag 19 to inflate them, making them expand. By continuously pressing down the handle 11, the inner sealing airbag 18 and the outer sealing airbag 19 can be filled to a full state. Furthermore, under the action of the expanded inner sealing airbag 18 and outer sealing airbag 19, not only can the fixing base 3 be fixed in the installation port 16, but also the connecting base 4 can be fixed in the through hole 17. At the same time, the expanded inner sealing airbag 18 and outer sealing airbag 19 can be respectively closely attached to the outside of the connecting base 4 and the inside of the installation port 16, thereby achieving a sealing effect and preventing gas from leaking from the connection between the installation port 16 and the fixing base 3 and the connection between the connecting base 4 and the through hole 17, which may affect the measurement accuracy of the air flow.

[0034] The fixing base 3 is fixed again by the screw I 7, and the connecting base 4 is fixed again by the screw II 15, greatly improving the stability of the installation of the fixing base 3, the connecting base 4 and the flowmeter body 5. When disassembly and maintenance are required, when the screw I 7 and the screw II 15 are loosened, and at the same time the exhaust pipe 13 is opened through the control valve 14, the air in the inner sealing airbag 18 and the outer sealing airbag 19 can be discharged through the air filling pipe 20, the annular air cavity 21 and the exhaust pipe 13, so that they shrink and do not fix the fixing base 3 and the connecting base 4. At this time, the fixing base 3, the connecting base 4 and the flowmeter body 5 can be disassembled for maintenance work.

Claims

1. A flowmeter fixing seat with convenient installation, characterized in that, It includes a fixed seat (3) and a connecting pipe (2) fixedly connected to one side of the gas dispenser (1). An installation opening (16) is provided at the top of the connecting pipe (2), and a through hole (17) is provided at the top of the fixed seat (3). A connecting seat (4) is slidably sleeved in the through hole (17), and the flowmeter body (5) is fixedly sleeved in the connecting seat (4). A sealing and fixing mechanism is provided between the installation opening (16), the fixed seat (3), the connecting seat (4) and the through hole (17). The sealing and fixing mechanism includes a sealing and fixing component and an inflation component. The sealing and fixing component includes an outer sealing airbag (19) fixedly sleeved on the outside of the fixed seat (3) and an inner sealing airbag (18) fixedly connected in the through hole (17). An annular air cavity (21) is provided in the fixed seat (3), and a plurality of air filling pipes (20) are fixedly connected to the bottom inner wall of the annular air cavity (21). The bottom ends of the plurality of air filling pipes (20) are respectively communicated with the corresponding outer sealing airbag (19) and inner sealing airbag (18).

2. The flowmeter fixing seat with convenient installation according to claim 1, characterized in that An exhaust pipe (13) is fixedly connected to the top inner wall of the annular air cavity (21), and a control valve (14) is provided on the exhaust pipe (13).

3. The flowmeter fixing seat with convenient installation according to claim 1, characterized in that, The outer sealing airbag (19) is slidably connected in the installation opening (16), and the connecting seat (4) is slidably sleeved in the inner sealing airbag (18).

4. The installation-convenient flowmeter fixing seat according to claim 1, characterized in that, The inflation component includes an air cylinder (6) fixedly connected to the top of the fixed seat (3). A supply pipe (25) is fixedly connected between the bottom of the air cylinder (6) and the annular air cavity (21). An intake pipe (24) is fixedly connected to the bottom of one side of the air cylinder (6). A sliding disk (23) is slidably sleeved in the air cylinder (6). A rubber sleeve (22) is fixedly sleeved on the outside of the sliding disk (23). The rubber sleeve (22) is slidably sealed and sleeved in the air cylinder (6). A piston rod (8) and a return spring (12) are fixedly connected to the top of the sliding disk (23). The top end of the return spring (12) is fixedly connected to the top inner wall of the air cylinder (6).

5. The installation-convenient flowmeter fixing seat according to claim 4, characterized in that, A connecting rod (9) is rotatably connected to the front side of the piston rod (8), a handle (11) is rotatably connected to the rear side of the connecting rod (9), a support plate (10) is fixedly connected to the top of the air cylinder (6), and the handle (11) is rotatably connected to the front side of the support plate (10).

6. The flowmeter fixing seat with convenient installation according to claim 4, characterized in that, A one-way valve one (27) is provided in the intake pipe (24), and a one-way valve two (26) is provided in the supply pipe (25).

7. The fixing seat for a flowmeter with convenient installation according to claim 1, characterized in that, Four screws one (7) are threadedly connected to the top of the fixed seat (3). The fixed seat (3) is fixedly connected to the top of the connecting pipe (2) through the four screws one (7). Two screws two (15) are threadedly connected to the top of the connecting seat (4). The connecting seat (4) is fixedly connected to the top of the fixed seat (3) through the two screws two (15).

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