Acetone replenishing device for acetylene filling

Abstract

The utility model belongs to the technical field of dissolved acetylene gas cylinder filling, and particularly relates to an acetone refilling device for acetylene filling, which comprises a nitrogen cylinder, an acetone refilling tank and a weighing weighbridge, the nitrogen cylinder is communicated with the acetone refilling tank through a pressure supply pipeline, the acetone refilling tank is communicated with the acetylene gas cylinder, a pressure sensor and a nitrogen booster pump are sequentially mounted on the pressure supply pipeline, and the weighing weighbridge is communicated with the acetylene gas cylinder. A first electromagnetic valve and a second electromagnetic valve are installed on the pressure supply pipeline, the pressure sensor is in communication connection with a controller, and the nitrogen booster pump, the first electromagnetic valve and the second electromagnetic valve are all controlled by the controller. Through the arrangement of the first electromagnetic valve, the second electromagnetic valve, the pressure sensor and the nitrogen booster pump, when the pressure sensor detects that the pressure of the nitrogen cylinder is lower than a set value, the controller controls the two electromagnetic valves to be opened and closed, and the pressure supply source of the pressure supply pipeline is converted into the nitrogen booster pump from the nitrogen cylinder; and the problems of non-uniform acetone replenishing and even replenishing failure caused by too low pressure during acetone replenishing are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of dissolved acetylene cylinder filling, in particular to an acetone replenishing device for acetylene filling. Background Art

[0002] The storage of acetylene gas is different from that of other gases. Acetylene is dissolved in acetone and stored in acetylene cylinders with calcium silicate fillers inside. Therefore, it is also called dissolved acetylene. During the repeated use of acetylene cylinders, as acetylene gas is released, the consumption of acetone is inevitable. In order to ensure the safety of acetylene cylinders, before filling acetylene, the amount of acetylene loss is determined by weighing and testing to calculate the amount of acetone that needs to be added to the acetylene cylinder. Then, acetone is added to the acetylene cylinder according to the amount of acetone added to ensure that the amount of acetone inside the acetylene cylinder meets the standard requirements. When acetone is added to an acetylene cylinder, nitrogen pressurization is often used to add acetone to the acetylene cylinder. For example, Chinese utility model patent CN208074567U discloses an acetone adding device for an acetylene cylinder. The device uses the pressure of a nitrogen cylinder to transport acetone to the acetylene cylinder, and uses a weighing sensor, a solenoid valve, and a controller to achieve precise control of the amount of acetone added. However, in actual use, the following problems still exist: the pressure provided by the nitrogen cylinder will gradually decrease as the device is used. If the pressure is too low, uneven acetone addition or even failure of addition will occur, which will affect the final result of acetone addition. Therefore, it is necessary to design an acetone adding device for acetylene filling that can be pressurized when the pressure of nitrogen pressurization is too low. Utility Model Content

[0003] In view of the above technical problems, the utility model provides an acetone replenishing device for acetylene filling which can increase the pressure when the nitrogen pressure is too low, and has solved the problem of uneven acetone replenishment or replenishment failure caused by too low pressure.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: an acetone replenishing device for acetylene filling, comprising a nitrogen cylinder, an acetone replenishing tank, and a weighing scale, wherein the nitrogen cylinder is connected to the acetone replenishing tank through a pressure supply pipeline, the input end of the acetone replenishing tank is connected to an acetone storage tank, and the output end is connected to an acetylene cylinder, the acetylene cylinder is placed on the weighing scale, a pressure sensor and a nitrogen booster pump are sequentially installed on the pressure supply pipeline, a first solenoid valve is installed on the pressure supply pipeline between the pressure sensor and the acetone replenishing tank, a second solenoid valve is installed on the pressure supply pipeline between the pressure sensor and the nitrogen booster pump, the pressure sensor is communicatively connected to a controller, and the nitrogen booster pump, the first solenoid valve, and the second solenoid valve are all controlled by the controller.

[0005] Furthermore, a warning flash light is fixedly connected to one side of the controller, and the warning flash light is controlled by the controller.

[0006] Furthermore, a gas cylinder fixing frame is fixedly connected to the weighing floor scale, and the acetylene gas cylinder is placed in the gas cylinder fixing frame.

[0007] Compared with the prior art, the utility model has the following advantages:

[0008] 1. The utility model is provided with a first solenoid valve, a second solenoid valve, a pressure sensor, and a nitrogen booster pump. When the pressure sensor detects that the pressure of the nitrogen cylinder is lower than a set value, the controller controls the opening and closing of the two solenoid valves, and changes the pressure source of the pressure supply pipeline from the nitrogen cylinder to the nitrogen booster pump, thereby preventing the problem of uneven acetone replenishment or even replenishment failure caused by too low pressure during acetone replenishment, and avoiding adverse effects on the final result of acetone replenishment.

[0009] 2. The utility model provides an alarm flash light controlled by a controller. When the pressure of the nitrogen cylinder is low, the flash light reminds the operator to replace the nitrogen cylinder in time to prevent adverse effects on subsequent acetone replenishment work. By providing a cylinder fixing bracket, the safety problem caused by the tipping of the acetylene cylinder can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] In the figure: 1. nitrogen cylinder, 2. acetone replenishing tank, 3. weighing scale, 4. acetylene cylinder, 5. pressure sensor, 6. pressure supply pipeline, 7. nitrogen booster pump, 8. controller, 9. warning flash light, 10. first solenoid valve, 11. second solenoid valve, 12. cylinder fixing bracket. DETAILED DESCRIPTION

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] like Figure 1The acetone replenishing device for acetylene filling shown in the figure comprises a nitrogen cylinder 1, an acetone replenishing tank 2, and a weighing scale 3. The nitrogen cylinder 1 is connected to the acetone replenishing tank 2 through a pressure supply pipeline 6. The input end of the acetone replenishing tank 2 is connected to an acetone storage tank through a liquid pump. A liquid level gauge is arranged on the acetone replenishing tank 2, and the liquid level of the acetone in the acetone replenishing tank 2 can be observed in real time. The output end of the acetone replenishing tank 2 is connected to the replenishing interface of the acetone cylinder 4 through a delivery pipe. The delivery pipe extends into the interior of the acetone replenishing tank 2. The liquid inlet of the delivery pipe is located below the liquid level in the acetone replenishing tank 2. The acetylene cylinder 4 is placed It is placed on a weighing scale 3, and a pressure sensor 5 and a nitrogen booster pump 7 are installed on the pressure supply pipeline 6 in sequence. A first solenoid valve 10 is installed on the pressure supply pipeline 6 between the pressure sensor 5 and the acetone replenishing tank 2, and a second solenoid valve 11 is installed on the pressure supply pipeline 6 between the pressure sensor 5 and the nitrogen booster pump 7. The input end of the nitrogen booster pump 7 is connected to the pressure supply pipeline 6 at the front end of the first solenoid valve 10 through a pipeline. The pressure sensor 5 is communicatively connected to a controller 8, and the nitrogen booster pump 7, the first solenoid valve 10, and the second solenoid valve 11 are all controlled by the controller 8.

[0014] In order to remind the operator to replace the new nitrogen cylinder 1 in time, an alarm flash light 9 is fixedly connected to one side of the controller 8. The alarm flash light 9 is controlled by the controller 8. When the controller 8 receives a low pressure signal transmitted by the pressure sensor 5, the alarm flash light 9 starts flashing.

[0015] In order to prevent the acetylene gas cylinder 4 on the weighing floor scale 3 from tipping over and causing a safety accident, a gas cylinder fixing frame 12 is fixedly connected to the weighing floor scale 3 , and the acetylene gas cylinder 4 is placed in the gas cylinder fixing frame 12 .

[0016] The specific working process of the utility model is as follows:

[0017] Start the liquid pump to pump the acetone in the acetone storage tank into the acetone replenishing tank 2. When the set liquid level is reached, close the valves on the liquid pump and the liquid inlet, place the acetylene gas cylinder 4 with the calculated acetone replenishing amount into the gas cylinder fixing frame 12 for fixing, and connect the output end pipeline interface of the acetone replenishing tank 2 to the replenishing interface of the acetylene gas cylinder 4. Set the acetone replenishing amount as the end value in the weighing scale 3, slowly open the valve of the nitrogen gas cylinder 1, and use the pressure provided by the nitrogen gas cylinder 1 to continuously transport acetone to the acetylene gas cylinder 4. When the end value set by the weighing scale 3 is reached, When the pressure reaches the set value, close the valve, disconnect the joint after releasing the pressure, and replace the next acetylene cylinder 4 to be replenished with acetone; during the operation, the pressure sensor 5 monitors the pressure in the pressure supply pipeline 6 in real time, and transmits the result signal to the controller 8. When the pressure is lower than the value set by the controller 8, the controller 8 controls the second solenoid valve 11 to open, the nitrogen booster pump 7 to start, and the first solenoid valve 10 to close, and the supply pressure is changed to the nitrogen booster pump 7 supply pressure. At the same time, the controller 8 controls the alarm flash light 9 to flash, reminding the operator to replace the new nitrogen cylinder 1 in time.

Claims

1. An acetone replenishing device for acetylene filling, comprising a nitrogen cylinder (1), an acetone replenishing tank (2), and a weighing scale (3), wherein the nitrogen cylinder (1) is connected to the acetone replenishing tank (2) through a pressure supply pipeline (6), the input end of the acetone replenishing tank (2) is connected to an acetone storage tank, and the output end is connected to an acetylene cylinder (4), and the acetylene cylinder (4) is placed on the weighing scale (3), characterized in that: A pressure sensor (5) and a nitrogen booster pump (7) are sequentially installed on the pressure supply pipeline (6); a first solenoid valve (10) is installed on the pressure supply pipeline (6) between the pressure sensor (5) and the acetone replenishing tank (2); a second solenoid valve (11) is installed on the pressure supply pipeline (6) between the pressure sensor (5) and the nitrogen booster pump (7); the pressure sensor (5) is communicatively connected to a controller (8); and the nitrogen booster pump (7), the first solenoid valve (10) and the second solenoid valve (11) are all controlled by the controller (8).

2. The acetone replenishing device for acetylene filling according to claim 1, characterized in that: A warning flash light (9) is fixedly connected to one side of the controller (8), and the warning flash light (9) is controlled by the controller (8).

3. The acetone replenishing device for acetylene filling according to claim 1, characterized in that: A gas cylinder fixing frame (12) is fixedly connected to the weighing floor scale (3), and the acetylene gas cylinder (4) is placed in the gas cylinder fixing frame (12).

Images