Efficient petroleum product condensation point tester

Abstract

The utility model relates to the technical field of condensation point testers, in particular to an efficient petroleum product condensation point tester which comprises a case, a flow guide cover A, a flow guide cover B, a temperature measuring assembly, a piston and a lifting driving assembly, and a measuring pipe is arranged in the case. The flow guide cover A is arranged outside the measuring pipe in a sleeving mode, a channel A for refrigerant media to circulate is arranged between the inner wall of an inner cavity of the flow guide cover A and the measuring pipe, and the channel A is communicated with the refrigerating assembly in a circulating mode. The flow guide cover B is arranged outside the measuring pipe in a sleeving mode and located below the flow guide cover A. A channel B for constant-temperature water to flow is arranged between the inner wall of an inner cavity of the flow guide cover B and the measuring pipe, and the channel B is communicated with the constant-temperature control assembly in a circulating mode. The two temperature measuring assemblies are connected with the measuring pipe. The piston is located in the measuring pipe. The lifting driving assembly drives the piston to slide in the measuring pipe, so that the to-be-measured raw materials in the measuring pipe are transferred between the refrigeration station and the water bath station. The water bath and refrigeration functions are integrated, the station switching is convenient, and the condensation point measuring efficiency of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of condensation point testers, in particular to a high-efficiency condensation point tester for petroleum products. Background Art

[0002] The freezing point of a liquid refers to the temperature at which the liquid begins to turn into a solid under certain conditions. A freezing point tester is an instrument used to measure the freezing point of a liquid. By controlling the temperature and monitoring the state changes of the sample, the freezing point of the liquid can be accurately determined. Before petroleum products are put on the market, their freezing points need to be accurately measured using a freezing point tester. During the measurement, the temperature needs to be tested step by step to determine the freezing point temperature.

[0003] The technical solution disclosed in the Chinese patent with authorization announcement number CN211061449U can quickly cool petroleum products and improve experimental efficiency by setting up an annular water pipe and an oil collecting pipe. The oil collecting pipe is located in the middle position of the annular water pipe, so that the internal oil is cooled evenly. The oil inlet solenoid valve and the oil discharge solenoid valve are set to perform static cooling detection on the oil entering the oil collecting pipe; the one-way valve is set to ensure that the gas generated by the air pump enters the interior of the oil inlet pipe through the air pipe, which can protect the air pump and the pressure solenoid valve from oil pollution.

[0004] However, the device still has some shortcomings: the freezing point tester has a single function, and the staff needs to repeatedly take out samples and place the samples in a constant temperature water bath and then adjust the temperature for testing again, which is time-consuming and laborious. Utility Model Content

[0005] The utility model aims to provide a high-efficiency oil product condensation point tester in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is a high-efficiency petroleum product freezing point tester, comprising a chassis, a test tube is arranged in the chassis, a feed hopper for adding the raw material to be tested into the test tube is arranged on the chassis, and a display screen and a control component are arranged on the chassis.

[0007] The flow guide cover A is sleeved on the outside of the measuring tube, and a channel A for the circulation of a cooling medium is arranged between the inner wall of the inner cavity of the flow guide cover A and the measuring tube, and the channel A is circulated and connected to the refrigeration component.

[0008] The flow guide cover B is sleeved on the outside of the measuring tube and is located below the flow guide cover A. A channel B for constant temperature water circulation is set between the inner wall of the inner cavity of the flow guide cover B and the measuring tube. The channel B is circulated and connected to the constant temperature control component.

[0009] Temperature measuring components, two sets of temperature measuring components are connected to the measuring tube, and the two sets of temperature measuring components are respectively located on the inner sides of the guide cover A and the guide cover B.

[0010] The piston is located in the measuring tube and is slidably connected to the inner wall thereof.

[0011] And a lifting drive component, which drives the piston to slide in the measuring tube to transfer the raw material to be tested in the measuring tube from the refrigeration station of the guide cover A to the water bath station of the guide cover B, or from the water bath station of the guide cover B to the refrigeration station of the guide cover A.

[0012] Preferably, a hopper cover is provided on the feed hopper, and a pressure equalizing valve connecting the outside with the inside of the measuring tube is provided on the hopper cover.

[0013] Preferably, spiral plates are provided on the inner walls of the flow guide cover A and the flow guide cover B, so that the media in the channel A and the channel B circulate along the spiral direction of the spiral plates.

[0014] Preferably, the refrigeration assembly includes a refrigeration box, a circulation pump A and a refrigerator, the refrigeration box stores a refrigerant, the output end of the refrigeration box is connected to the input end of the channel A, the input end of the refrigeration box is connected to the output end of the circulation pump A, the input end of the circulation pump A is connected to the output end of the channel A, and the cold end of the refrigerator is located in the refrigeration box and below the refrigerant liquid level.

[0015] Preferably, an air inlet and an exhaust hole are provided on the chassis, and a radiator is provided in the exhaust hole so that air circulation is driven by the radiator to dissipate heat from the hot end of the refrigerator.

[0016] Preferably, the constant temperature control component includes a constant temperature water tank, a circulating pump B and a heating component, the output end of the constant temperature water tank is connected to the input end of the channel B, the input end of the constant temperature water tank is connected to the output end of the circulating pump B, the input end of the circulating pump B is connected to the output end of the channel B, and the heating component is located in the constant temperature water tank and below the water surface.

[0017] Preferably, an electromagnetic valve with an internal on / off switch of the controller is provided on the measuring tube to prevent the flow guide cover A and the flow guide cover B from communicating with each other, and a discharge port connected to the flow guide cover A is provided on the measuring tube, a discharge pipe is provided outside the discharge port, the discharge port is located between the electromagnetic valve and the flow guide cover B, the discharge pipe is connected to a material receiving box, and the material receiving box is slidably connected to the chassis.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] By arranging the guide cover A and the guide cover B, the guide cover A is connected to the refrigeration box and the circulation pump A to perform circulation refrigeration on the refrigeration station inside the guide cover, and the guide cover is connected to the constant temperature water tank and the circulation pump B to perform circulation heating on the water bath station inside the guide cover; by arranging a piston in the measuring tube, the position of the piston is controlled by the hydraulic cylinder, so that the sample to be tested can be transferred between the refrigeration station and the heating station, without the need for manual repeated taking, placing and water bath heating, thus saving time and labor, and the utility model adds a discharge pipe, which can automatically discharge the petroleum products after the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 The figure is a schematic diagram of the internal structure of the chassis;

[0022] Figure 3 Schematic diagram of the connection structure of various components on the measuring tube.

[0023] Figure numerals: 1. Chassis; 101. Air inlet; 102. Exhaust hole; 2. Measuring tube; 3. Feed hopper; 4. Hopper cover; 5. Air deflector A; 6. Air deflector B; 7. Spiral plate; 8. Temperature sensor; 9. Refrigeration box; 10. Circulation pump A; 11. Constant temperature water tank; 12. Circulation pump B; 13. Solenoid valve; 14. Discharge pipe; 15. Piston; 16. Hydraulic cylinder; 17. Receiving box; 18. Radiator; 19. Display screen; 20. Control component. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] like Figure 1-Figure 3As shown, the utility model proposes a high-efficiency petroleum product freezing point tester, including a chassis 1, a flow guide cover A5, a flow guide cover B6, a temperature measuring component, a piston 15 and a lifting drive component. A measuring tube 2 is arranged in the chassis 1, and a feed hopper 3 for adding the raw material to be measured into the measuring tube 2 is arranged on the chassis 1, and a display screen 19 and a control component 20 are arranged on the chassis 1. A hopper cover 4 is arranged on the feed hopper 3, and a pressure equalizing valve connecting the outside with the inside of the measuring tube 2 is arranged on the hopper cover 4. The flow guide cover A5 is sleeved on the outside of the measuring tube 2, and a channel A for the circulation of a cooling medium is arranged between the inner wall of the inner cavity of the flow guide cover A5 and the measuring tube 2, and the channel A is circulated and connected to the refrigeration component. The refrigeration assembly includes a refrigeration box 9, a circulation pump A10 and a refrigerator. A refrigerant is stored in the refrigeration box 9. The refrigerant includes but is not limited to anhydrous ethanol. The output end of the refrigeration box 9 is connected to the input end of the channel A. The input end of the refrigeration box 9 is connected to the output end of the circulation pump A10. The input end of the circulation pump A10 is connected to the output end of the channel A. The refrigerator includes but is not limited to a semiconductor refrigerator. The cold end of the semiconductor refrigerator is located in the refrigeration box 9 and below the liquid level of the refrigerant. The hot end of the semiconductor refrigerator is connected to the heat sink fins. An air inlet 101 and an exhaust hole 102 are arranged on the chassis 1. A radiator 18 is arranged in the exhaust hole 102 to drive air circulation through the radiator 18 to dissipate heat to the heat sink fins. The air guide cover B6 is sleeved on the outside of the measuring tube 2 and is located below the air guide cover A5. A channel B for constant temperature water circulation is arranged between the inner wall of the inner cavity of the air guide cover B6 and the measuring tube 2. The channel B is circulated and connected to the constant temperature control assembly. An air inlet 101 and an exhaust hole 102 are provided on the chassis 1, and a radiator 18 is provided in the exhaust hole 102 to drive air circulation through the radiator 18 to dissipate heat from the hot end of the refrigerator. Spiral plates 7 are provided on the inner walls of the air guide hood A5 and the air guide hood B6 to allow the media in channels A and B to circulate along the screwing direction of the spiral plate 7. The temperature measuring component includes two groups of temperature sensors 8, and the temperature sensors 8 are connected to the control component 20, and the control component 20 is electrically connected to the display screen 19. The two groups of temperature sensors 8 are connected to the measuring tube 2, and the two groups of temperature sensors 8 are respectively located on the inner sides of the air guide hood A5 and the air guide hood B6. The piston 15 is located in the measuring tube 2 and is slidably connected to its inner wall. The lifting drive assembly includes but is not limited to a hydraulic cylinder 16, which drives the piston 15 to slide in the measuring tube 2 to transfer the raw material to be tested in the measuring tube 2 from the refrigeration station of the flow guide cover A5 to the water bath station of the flow guide cover B6, or from the water bath station of the flow guide cover B6 to the refrigeration station of the flow guide cover A5.

[0026] In the present embodiment, during the actual operation, the approximate freezing point temperature of the petroleum product is first inferred according to its characteristics, and then the medium temperature in the refrigeration box 9 is set, and the set temperature is 8-10°C lower than the inferred freezing point temperature. At the same time, the temperature of the water in the constant temperature water tank 11 is set, and the water temperature setting range is 30-35°C. Then, the petroleum product to be tested is sampled and added into the measuring tube 2 along the feed hopper 3. At this time, the sample is kept on the refrigeration station inside the guide cover A5 under the limitation of the piston 15, and the circulation pump A10 is started. The circulation pump A10 drives the refrigerant medium in the guide cover A5 and the refrigeration box 9 to circulate, so as to cool down the sample in the measuring tube 2. The sample temperature is monitored in real time by the temperature sensor on the station. When When the monitored temperature reaches the set value, keep circulating refrigeration for 1 minute, then open the bucket cover 4, and gently stir the sample with a stirring rod. If there is obvious resistance when the sample is stirred, it indicates that the sample has condensed. At this time, adjust the set temperature of the refrigeration box 9 to increase it by 4°C. At the same time, the hydraulic cylinder 16 pulls down the piston 15 to allow the sample to enter the water bath station. The circulating pump B12 drives the warm water in the guide cover B6 and the constant temperature water tank 11 to circulate to raise the temperature of the sample to 30-35°C. Then the sample rises to the refrigeration station again, and the above operation is repeated until the freezing point temperature data of the petroleum product is obtained. The device does not need to repeatedly take and place the sample and transfer it between the water bath and the refrigeration station. The operation is simple and convenient, saving time and effort.

[0027] Embodiment 2

[0028] like Figure 2 and Figure 3 As shown, the utility model proposes a high-efficiency petroleum product freezing point tester. Compared with the first embodiment, a solenoid valve 13 with an internal on / off controller is provided on the measuring tube 2 to prevent the flow guide cover A5 and the flow guide cover B6 from communicating with each other, and a discharge port connected thereto is provided on the measuring tube 2, a discharge pipe 14 is provided outside the discharge port, the discharge pipe is connected to the solenoid valve B, the discharge port is located between the solenoid valve 13 and the flow guide cover B6, the discharge pipe 14 is connected to a receiving box 17, and the receiving box 17 is slidably connected to the chassis 1.

[0029] In this embodiment, when the low-temperature petroleum product descends to the water bath station inside the guide cover B6, the solenoid valve 13 is closed, which can prevent the low temperature in the guide cover A5 from being conducted into the station inside the guide cover B6, thereby improving the efficiency of the water bath heating of the petroleum product. After the petroleum product has been subjected to multiple temperature tests to obtain the product solidification point, the petroleum product is lowered to the water bath station through the piston 15 and then the solenoid valve 13 is closed, the solenoid valve B is opened, and the hydraulic cylinder 16 pushes up the piston 15, so that the petroleum product enters the receiving box 17 from the discharge pipe 14. When cleaning the measuring tube, water can be added and drained multiple times for flushing.

[0030] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An efficient petroleum product pour point tester, characterized in that: include A chassis (1), a measuring tube (2) is arranged in the chassis (1), a feeding hopper (3) is arranged on the chassis (1) for adding the raw material to be measured into the measuring tube (2), and a display screen (19) and a control component (20) are arranged on the chassis (1); A flow guide cover A (5), the flow guide cover A (5) is sleeved on the outside of the measuring tube (2), and a channel A for the circulation of a cooling medium is provided between the inner wall of the inner cavity of the flow guide cover A (5) and the measuring tube (2), and the channel A is circulated and connected to the refrigeration component; A flow guide cover B (6), which is sleeved on the outside of the measuring tube (2) and located below the flow guide cover A (5), and a channel B for constant temperature water circulation is provided between the inner wall of the inner cavity of the flow guide cover B (6) and the measuring tube (2), and the channel B is circulated and connected to the constant temperature control component; Temperature measuring components, the two sets of temperature measuring components are connected to the measuring tube (2), and the two sets of temperature measuring components are respectively located on the inner side of the flow guide cover A (5) and the flow guide cover B (6); A piston (15), the piston (15) is located in the measuring tube (2) and is slidably connected to the inner wall thereof; And a lifting drive assembly, the lifting drive assembly drives the piston (15) to slide in the measuring tube (2) to transfer the raw material to be measured in the measuring tube (2) from the refrigeration station of the flow guide cover A (5) to the water bath station of the flow guide cover B (6), or from the water bath station of the flow guide cover B (6) to the refrigeration station of the flow guide cover A (5).

2. The high-efficiency petroleum product pour point tester according to claim 1, characterized in that: A hopper cover (4) is arranged on the feed hopper (3), and a pressure equalizing valve for connecting the outside with the inside of the measuring tube (2) is arranged on the hopper cover (4).

3. The high-efficiency petroleum product pour point tester according to claim 1, characterized in that: The inner walls of the flow guide cover A (5) and the flow guide cover B (6) are both provided with spiral plates (7) so that the media in the channel A and the channel B circulate along the spiral direction of the spiral plates (7).

4. The high-efficiency petroleum product pour point tester according to claim 1, characterized in that: The refrigeration assembly comprises a refrigeration box (9), a circulation pump A (10) and a refrigerator. A refrigerant is stored in the refrigeration box (9). The output end of the refrigeration box (9) is connected to the input end of the channel A. The input end of the refrigeration box (9) is connected to the output end of the circulation pump A (10). The input end of the circulation pump A (10) is connected to the output end of the channel A. The cold end of the refrigerator is located in the refrigeration box (9) and below the liquid level of the refrigerant.

5. A high-efficiency petroleum product pour point tester according to claim 4, characterized in that: An air inlet (101) and an air outlet (102) are arranged on the chassis (1), and a radiator (18) is arranged in the air outlet (102) so that air circulation is driven by the radiator (18) to dissipate heat from the hot end of the refrigerator.

6. The high-efficiency petroleum product pour point tester according to claim 1, characterized in that: The constant temperature control component comprises a constant temperature water tank (11), a circulation pump B (12) and a heating component, wherein the output end of the constant temperature water tank (11) is connected to the input end of the channel B, the input end of the constant temperature water tank (11) is connected to the output end of the circulation pump B (12), the input end of the circulation pump B (12) is connected to the output end of the channel B, and the heating component is located in the constant temperature water tank (11) and below the water surface.

7. The high-efficiency petroleum product pour point tester according to claim 1, characterized in that: The measuring tube (2) is provided with an electromagnetic valve (13) which is turned on and off inside the controller to prevent the flow guide cover A (5) and the flow guide cover B (6) from communicating with each other, and the measuring tube (2) is provided with a discharge port which is connected thereto, and a discharge pipe (14) is provided outside the discharge port, and the discharge port is located between the electromagnetic valve (13) and the flow guide cover B (6), and the discharge pipe (14) is connected to a material receiving box (17), and the material receiving box (17) is slidably connected to the chassis (1).

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