Diaphragm pressure gauge transmission liquid vacuum filling equipment

Abstract

The utility model relates to a kind of conductive liquid filling equipment, specifically to a diaphragm pressure gauge conductive liquid vacuum filling equipment;Including vacuumizing pedestal, the vacuumizing pedestal is connected with first valve, second valve and third valve;The first valve, second valve and first vacuum pump communication, first oil tank is equipped between the second valve and the first vacuum pump;The third valve and second vacuum pump communication, second oil tank is equipped between the third valve and the second vacuum pump;Fourth valve is equipped between the first oil tank and the second oil tank;The diaphragm pressure gauge conductive liquid vacuum filling equipment using the scheme has the advantages of high pumping vacuum, high production efficiency and low production cost.

Description

Technical Field

[0001] This utility model relates to a conductive fluid filling device, specifically a vacuum filling device for conductive fluid in a diaphragm pressure gauge. Background Technology

[0002] Existing conductive fluid filling systems, such as Figure 1 As shown, place the diaphragm pressure gauge 8 into the vacuum oil tank 9, ensuring that the diaphragm pressure gauge 8 is completely immersed in the conductive fluid, and then cover it with a sealing cap. Next, turn on the vacuum pump 10 to begin the pumping operation. After the pumping of the diaphragm pressure gauge 8 is complete, remove the diaphragm pressure gauge and clean the conductive fluid adhering to its surface. Finally, install and debug it.

[0003] The existing pumping system has a low vacuum level; the lack of an oil recovery circuit results in some waste of the conductive fluid; and because the conductive fluid is oily, the diaphragm pressure gauge 8 requires additional cleaning fluid to remove the conductive oil after pumping, further increasing production costs. Furthermore, the subsequent calibration of the diaphragm pressure gauge is labor-intensive and inefficient. Utility Model Content

[0004] The present invention aims to provide a vacuum filling device for diaphragm pressure gauge conductive fluid with high vacuum degree, and has the advantages of high production efficiency and low production cost.

[0005] The vacuum filling device for the diaphragm pressure gauge in this solution includes a vacuum base connected in parallel with a first valve, a second valve, and a third valve. These three valves control the filling and recovery oil circuits. Specifically: Filling oil circuit: The first and second valves are connected to a first vacuum pump. A first oil tank is located between the second valve and the first vacuum pump. After the first vacuum pump is turned on, the first valve is opened to evacuate the diaphragm pressure gauge. After closing the first valve, the second valve fills the diaphragm pressure gauge with the conductive fluid from the first oil tank. Recovery oil circuit: The third valve is connected to a second vacuum pump. A second oil tank is located between the third valve and the second vacuum pump. After the filling of the diaphragm pressure gauge is complete and the second valve is closed, the diaphragm pressure gauge is removed, and the third valve is opened again to recover any excess conductive fluid into the second oil tank. A fourth valve is located between the first and second oil tanks.

[0006] The advantages of this invention are: 1) The diaphragm pressure gauge is evacuated through the first valve and then filled with conductive fluid through the second valve. Only the connection between the diaphragm pressure gauge and the vacuum base needs to be cleaned, without cleaning the entire exterior of the diaphragm pressure gauge, reducing oil waste and saving cleaning time and cleaning agent usage; 2) The fourth valve can transport the conductive fluid in the second oil tank to the first oil tank, and the recovery oil circuit allows the conductive fluid to be fully utilized, reducing production costs and environmental pressure; 3) The first and second vacuum pumps ensure that the entire equipment operating circuit operates in a vacuum environment; 4) Since the entire operating circuit (i.e., the oil pumping circuit and the oil recovery circuit) operates in a vacuum environment, the vacuum degree of the diaphragm pressure gauge can be greatly guaranteed, reducing the workload in the subsequent calibration of the diaphragm pressure gauge, thereby reducing production costs and improving production efficiency.

[0007] Furthermore, the second valve is connected to the conductive fluid in the first oil tank, and the conductive fluid in the first oil tank fills the diaphragm pressure gauge under the action of gravity.

[0008] Furthermore, both the third valve and the second vacuum pump are connected to the upper space of the conductive liquid in the second oil tank. This creates a negative pressure in the second oil tank, recovering excess conductive liquid from the vacuum base into the second oil tank.

[0009] Furthermore, the first vacuum pump is connected to the upper space of the conductive liquid in the first oil tank, ensuring that the conductive liquid in the second oil tank has space to enter the first oil tank. Simultaneously, because lower pressure results in lower gas solubility, dissolved air in the conductive liquid is released, further increasing the vacuum level. One end of the fourth valve is connected to the upper space of the conductive liquid in the first oil tank, and the other end is connected to the conductive liquid in the second oil tank. Only the conductive liquid in the second oil tank enters the first oil tank.

[0010] Furthermore, the first vacuum pump can evacuate the diaphragm pressure gauge to below 10 Pa.

[0011] Furthermore, the first, second, third, and fourth valves are all vacuum valves. This is to adapt to negative pressure environments, ensure sealing under low pressure, and thus ensure the vacuum level of the diaphragm pressure gauge.

[0012] Furthermore, the vacuum base is equipped with multiple connecting and fixing seats. Multiple diaphragm pressure gauges are also installed on it.

[0013] Furthermore, the vacuum base is connected to a vacuum tube, which has a three-pronged interface for connecting the first valve, the second valve, and the third valve. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an existing conductive fluid filling system;

[0015] Figure 2 This is a schematic diagram of the structure of the diaphragm pressure gauge vacuum filling device for transmitting fluid according to this utility model.

[0016] In the diagram, 1 is the vacuum base, 2 is the vacuum tube, 3-1 is the first valve, 3-2 is the second valve, 3-3 is the third valve, 3-4 is the fourth valve, 4-1 is the first oil tank, 4-2 is the second oil tank, 5-1 is the first vacuum pump, 5-2 is the second vacuum pump, 6 is the conduction fluid, 7 is the three-way interface, 8 is the diaphragm pressure gauge, 9 is the vacuum oil tank, and 10 is the vacuum pump. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] according to Figure 2 As shown, the vacuum filling device for the diaphragm pressure gauge conductive fluid includes a vacuum base 1 that can be connected to the diaphragm pressure gauge 8. The vacuum base 1 is connected to a vacuum tube, which has a three-way connector 7. A first valve 3-1, a second valve 3-2, and a third valve 3-3 are connected in parallel to the vacuum base 1 through this three-way connector 7. The vacuum base 1 also has multiple connecting and fixing seats 2 for connecting and fixing the diaphragm pressure gauge 8. The pumping and refilling oil circuits and the recovery oil circuit can be controlled through the first valve 3-1, the second valve 3-2, and the third valve 3-3.

[0019] The oil extraction circuit is as follows: First valve 3-1 and second valve 3-2 are connected to first vacuum pump 5-1, and a first oil tank 4-1 is located between second valve 3-2 and first vacuum pump 5-1; second valve 3-2 is connected to the conductive fluid 6 in first oil tank 4-1. Preferably, first vacuum pump 5-1 can evacuate diaphragm pressure gauge 8 to below 10 Pa. The oil recovery circuit is as follows: Third valve 3-3 is connected to second vacuum pump 5-2, and a second oil tank 4-2 is located between third valve 3-3 and second vacuum pump 5-2. Both third valve 3-3 and second vacuum pump 5-2 are connected to the upper space of conductive fluid 6 in second oil tank 4-2. A fourth valve 3-4 is located between first oil tank 4-1 and second oil tank 4-2. One end of fourth valve 3-4 is connected to the upper space of conductive fluid 6 in first oil tank 4-1, and the other end is connected to conductive fluid 6 in second oil tank 4-2.

[0020] As a further improvement to this embodiment, the first vacuum pump 5-1 is connected to the upper space of the conductive liquid 6 in the first oil tank 4-1. The first vacuum pump 5-1 causes the air dissolved in the conductive liquid 6 to be released, further improving the vacuum degree of the diaphragm pressure gauge 8. The first valve 3-1, the second valve 3-2, the third valve 3-3, and the fourth valve 3-4 are all vacuum valves to adapt to the negative pressure environment, ensure sealing under low pressure, and thus ensure the vacuum degree of the diaphragm pressure gauge 8.

[0021] Operating principle:

[0022] a) Close the first valve 3-1, the second valve 3-2, the third valve 3-3, and the fourth valve 3-4. Turn on the first vacuum pump 5-1 and the second vacuum pump 5-2;

[0023] b) Install the diaphragm pressure gauge 8 on the connecting mounting base 2. Open the first valve 3-1, and after the vacuum level drops below 10 Pa, close the first valve 3-1.

[0024] c) Open the second valve 3-2. Since the first oil tank 4-1 is filled with enough conductive fluid 6 and the diaphragm pressure gauge 8 is under negative pressure, the conductive fluid 6 will fill the diaphragm pressure gauge 8 under the action of gravity. Then close the second valve 3-2 and remove the diaphragm pressure gauge 8.

[0025] d) Open the third valve 3-3 to pump the excess transfer oil into the second oil tank 4-2, and then close the third valve 3-3 to complete one cycle.

[0026] e) Every so often, open the fourth valve 3-4 once to inject the conduction oil recovered from the second oil tank 4-2 into the first oil tank 4-1.

[0027] Compared to traditional conductive fluid filling systems, this invention reduces oil waste and saves cleaning time and cleaning agent usage. Since both the oil extraction and recovery circuits operate under vacuum, the vacuum level of the diaphragm gauge is greatly guaranteed, reducing workload during subsequent diaphragm gauge calibration, thereby lowering production costs and improving production efficiency. Simultaneously, the recovery circuit reduces production costs and is environmentally friendly.

[0028] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A vacuum filling device for the conductive fluid of a diaphragm pressure gauge, characterized in that: The device includes a vacuum base, which is connected in parallel with a first valve, a second valve, and a third valve; the first valve and the second valve are connected to a first vacuum pump, and a first oil tank is provided between the second valve and the first vacuum pump; the third valve is connected to a second vacuum pump, and a second oil tank is provided between the third valve and the second vacuum pump; a fourth valve is provided between the first oil tank and the second oil tank.

2. The vacuum filling device for the diaphragm pressure gauge conductive fluid according to claim 1, characterized in that: The second valve is connected to the conductive fluid in the first oil tank.

3. The vacuum filling device for the diaphragm pressure gauge conductive fluid according to claim 2, characterized in that: The third valve and the second vacuum pump are both connected to the upper space of the conductive liquid in the second oil tank.

4. The vacuum filling device for the diaphragm pressure gauge conductive fluid according to claim 3, characterized in that: The first vacuum pump is connected to the upper space of the conductive liquid in the first oil tank; one end of the fourth valve is connected to the upper space of the conductive liquid in the first oil tank, and the other end is connected to the conductive liquid in the second oil tank.

5. The vacuum filling device for the diaphragm pressure gauge conductive fluid according to claim 1, characterized in that: The first vacuum pump can evacuate the diaphragm pressure gauge to below 10 Pa.

6. The vacuum filling device for the conductive fluid of the diaphragm pressure gauge according to claim 1, characterized in that: The first valve, the second valve, the third valve, and the fourth valve are all vacuum valves.

7. The vacuum filling device for the diaphragm pressure gauge conductive fluid according to claim 1, characterized in that: The vacuum base is equipped with multiple connecting and fixing seats.

8. The vacuum filling device for the conductive fluid of the diaphragm pressure gauge according to claim 2, characterized in that: The vacuum base is connected to a vacuum tube, which has a three-pronged interface.

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