Calibration device based on petroleum moisture content tester

Abstract

The utility model relates to a calibration device based on a petroleum moisture content tester, which belongs to the technical field of petroleum detection equipment and comprises a flash tank, the flash tank comprises a shell, a buoy is slidably connected in the shell, a guide rod is fixedly connected to the upper end of the buoy and penetrates through the upper end of the shell, and an exhaust component is communicated with the side wall of the shell. A liquid outlet is formed in the lower end of the flash tank, the inner side wall of the shell is fixedly connected with a double-layer O-shaped sealing ring, and the floating barrel is in contact with the double-layer O-shaped sealing ring; the exhaust assembly comprises an exhaust funnel communicated with the flash tank, a floating block is slidably connected to the interior of the exhaust funnel, the upper side wall and the lower side wall of the floating block are fixedly connected with limiting circular plates, and a plurality of water conveying holes are formed in the limiting circular plates. The phenomena of missing detection, reading recording errors and the like are fundamentally eradicated, original data can be traced and checked, and the accuracy of quantity value traceability of the online water content meter is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil detection equipment, in particular to a calibration device based on an oil water content tester. Background Technique

[0002] The water content of oil refers to the ratio of the volume of associated water in oil to the volume of the oil-water mixture, which is one of the important parameters of oil and is an index that is highly concerned in the processes of oil extraction, dehydration, storage, transportation, sales, and refining;

[0003] During the production process, it will affect the decision-making of process control, resulting in inaccurate process control. With the intelligent development of domestic oil fields, the types of oil water content testers (referred to as water content meters) are increasing day by day, and their importance is becoming increasingly prominent. Customers' demand for instruments in the full range increases, and it is urgent to develop an intelligent verification / calibration device for full-range oil water content testers. The verification / calibration device for oil water content testers is a device for verifying on-line water content meters. The existing device requires manual liquid preparation, liquid injection, and exhaust before verifying the water content meter, and operations such as zero calibration and full-scale calibration are completed. After verifying one verification point, it is necessary to drain the liquid and perform operations such as liquid preparation, liquid injection, and exhaust again. The verification process is time-consuming and laborious, with low efficiency, and the measurement range is only (0-3)% volume water content. Content of the Utility Model

[0004] The purpose of the utility model is to provide a calibration device based on an oil water content tester to solve the problems of small measurement range, low degree of automation in the verification process, and manual recording of detection data in the oil water content tester verification device proposed in the above background technique.

[0005] The technical solution of the utility model is as follows:

[0006] It includes an expansion vessel, which includes a housing. Inside the housing, a floating cylinder is slidably connected. The upper end of the floating cylinder is fixedly connected with a guide rod, and the guide rod penetrates through the upper end of the housing. An exhaust assembly is communicated with the side wall of the housing. A liquid outlet is drilled at the lower end of the expansion vessel. A double-layer O-ring is fixedly connected to the inner side wall of the housing, and the floating cylinder is in contact with the double-layer O-ring;

[0007] The exhaust assembly includes an exhaust cylinder communicated with the expansion vessel. Inside the exhaust cylinder, a floating block is slidably connected. Limiting circular plates are fixedly connected to both the upper and lower side walls of the floating block. A plurality of water delivery holes are drilled in the limiting circular plates. The upper end of the floating block is fixedly connected with a top rod, and the upper end of the top rod is fixedly connected with a sealing ring. The upper end of the exhaust cylinder is fixedly connected with a valve cylinder, and the sealing ring is slidably connected inside the valve cylinder. Air holes are drilled in the side wall of the valve cylinder. The lower end of the exhaust cylinder is fixedly connected with a drainage assembly;

[0008] A double-layer O-ring seal is connected to a circulation pipe, and the end of the circulation pipe is connected to the side wall of the outer shell. An oil circuit interface is connected to the circulation pipe.

[0009] Further, the drainage component includes a drainage cylinder connected to the lower end of the exhaust cylinder. A spring plate is fixedly connected inside the drainage cylinder, and a fixed ring plate is fixedly connected inside the drainage cylinder. A sealing piece is arranged below the fixed ring plate. A tension spring is fixedly connected between the spring plate and the sealing piece. A support short rod is fixedly connected to the inner wall of the lower side of the exhaust cylinder.

[0010] Further, a circulation pump and a flow meter for detecting the flow rate are installed on the circulation pipe.

[0011] Further, a stirring blade assembly for stirring the test medium is installed inside the circulation pipe.

[0012] Further, a temperature sensor for detecting the temperature of the test medium is inserted into the circulation pipe, and a temperature control sleeve for heat preservation of the test medium is sleeved on the side wall of the circulation pipe.

[0013] Further, two on-line densitometers are installed on the circulation pipe.

[0014] Further, a pressure transmitter for detecting the pressure is fixedly connected to the circulation pipe.

[0015] The present utility model provides a calibration device based on an oil water content tester through improvement. Compared with the prior art, it has the following improvements and advantages:

[0016] Firstly: In the present utility model, the purpose of automatic expansion and contraction can be achieved through the pressure of the test medium transmitted into the circulation pipe.

[0017] Secondly: In the present utility model, the measurement range can be expanded to 0 to 100% volume water content. During the verification / calibration process, only the calibration points and calibration processes of the water content meter need to be set, and the intelligent control system will transmit the instructions to the measurement execution system. The measurement execution system will automatically complete the calibration of the water content meter according to the instructions and realize the dynamic automatic storage of data, so as to realize intelligent calibration, which can bring significant calibration effectiveness for the verification / calibration of on-line oil water content testers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further explains the present utility model in conjunction with the drawings and embodiments:

[0019] Figure 1 is a schematic structural view of the expander of the present utility model;

[0020] Figure 2 is a schematic structural view inside the expander of the present utility model;

[0021] Figure 3It is a schematic structural diagram of the exhaust component of the present utility model;

[0022] Figure 4 is Figure 3 an enlarged view of part A in

[0023] Figure 5 It is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 6 It is a system diagram of the present utility model;

[0025] Figure 7 is Figure 6 an enlarged view of part B in

[0026] Description of reference numerals:

[0027] 1. Expander; 101. Outer shell; 102. Float; 103. Guide rod; 104. Exhaust component; 1041. Exhaust pipe; 1042. Float block; 1043. Limiting circular plate; 1044. Water delivery hole; 1045. Thumb rod; 1046. Sealing ring; 1047. Valve barrel; 1048. Air hole; 105. Liquid outlet; 106. Double-layer O-ring;

[0028] 2. Circulation pipe; 3. Oil circuit interface; 4. Circulation pump; 5. Stirring blade assembly; 6. Flowmeter; 7. On-line density meter; 8. Temperature sensor; 9. Temperature control sleeve; 10. Pressure transmitter; 11. Drainage component; 111. Drainage pipe; 112. Spring plate; 113. Fixed ring piece; 114. Sealing piece; 115. Tension spring; 12. Support short rod. Detailed implementation manners

[0029] Next, the present utility model will be described in detail in conjunction with the attached Figures 1 to 7 The technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] The present utility model provides an improved calibration device based on an oil water content tester, as Figure 1 - Figure 7As shown in the figure, it includes an expansion vessel 1. The expansion vessel 1 includes a housing 101. Inside the housing 101, there is a floating cylinder 102 connected in a sliding manner. At the upper end of the floating cylinder 102, there is a guide rod 103 fixedly connected, and the guide rod 103 penetrates through the upper end of the housing 101. The guide rod 103 is set as a tubular structure. At the same time, there are multiple exhaust ports drilled on the side wall of the guide rod 103. An exhaust assembly 104 is communicated with the side wall of the housing 101. A liquid outlet 105 is drilled at the lower end of the expansion vessel 1. A double-layer O-ring 106 is fixedly connected to the inner side wall of the housing 101, and the floating cylinder 102 is in contact with the double-layer O-ring 106;

[0031] The exhaust assembly 104 includes an exhaust cylinder 1041 communicated with the expansion vessel 1 through a pipeline. Inside the exhaust cylinder 1041, there is a floating block 1042 connected in a sliding manner. On the upper and lower side walls of the floating block 1042, there are limiting circular plates 1043 fixedly connected. By means of the two limiting circular plates 1043, the stability of the up and down movement of the floating block 1042 can be improved. Multiple water delivery holes 1044 are drilled on the limiting circular plates 1043. At the upper end of the floating block 1042, there is a top rod 1045 fixedly connected. At the upper end of the top rod 1045, there is a sealing ring 1046 fixedly connected. At the upper end of the exhaust cylinder 1041, there is a valve cylinder 1047 fixedly connected, and the sealing ring 1046 is slidably connected inside the valve cylinder 1047. An air hole 1048 is drilled on the side wall of the valve cylinder 1047. At the lower end of the exhaust cylinder 1041, there is a drainage assembly 11 for draining water by relying on air pressure during the next use;

[0032] A circulation pipe 2 is communicated with the double-layer O-ring 106, and the end of the circulation pipe 2 is communicated with the side wall of the housing 101. An oil circuit interface 3 is communicated with the circulation pipe 2. When a test medium is filled in the circulation pipe 2, the gas is discharged from the exhaust assembly 104. As the liquid level in the pipeline rises with the injection of the test medium, the pressure inside the housing 101 will also increase, thereby pushing the floating cylinder 102 to rise to achieve the purpose of expansion. When the medium in the pipeline is extracted, the floating cylinder 102 falls due to its own weight to achieve the purpose of contraction.

[0033] Specifically, when a test medium is filled in the circulation pipe 2, the test medium enters the inside of the housing 101 under the action of a circulation pump 4. As the liquid level gradually rises inside the housing 101, the floating cylinder 102 moves upward under the buoyancy of the test medium. At the same time, the air between the test medium liquid level and the double-layer O-ring 106 is discharged from the exhaust assembly 104;

[0034] Among them, during exhaust, air first enters the interior of the exhaust pipe 1041 through the pipe connecting the exhaust pipe 1041 and the outer shell 101, then passes through the sealing ring 1046 and is discharged from the air hole 1048. When the liquid level of the test medium is higher than the pipe connecting the exhaust assembly 104 and the outer shell 101, the test medium will enter the interior of the exhaust pipe 1041, causing the floating block 1042 to move upward under the action of buoyancy. At the same time, the sealing ring 1046 is driven upward by the push rod 1045 to seal the air hole 1048. At this time, the interior of the exhaust pipe 1041 is in a closed state, preventing the test medium from leaking.

[0035] Furthermore, the drainage assembly 11 includes a drainage pipe 111 connected to the lower end of the exhaust pipe 1041. A spring plate 112 is fixedly connected inside the drainage pipe 111. A fixed ring piece 113 is fixedly connected inside the drainage pipe 111. A sealing piece 114 is arranged below the fixed ring piece 113. A tension spring 115 is fixedly connected between the spring plate 112 and the sealing piece 114. A support short rod 12 is fixedly connected to the inner wall of the lower side of the exhaust pipe 1041.

[0036] Specifically, under normal circumstances, since the sealing piece 114 is always pulled by the tension spring 115, the drainage assembly 11 is in a closed state. When the exhaust assembly 104 is automatically closed due to the entry of the test medium, if it is necessary to restore its exhaust function again, only need to increase the power of the circulation pump 4 in a short time. After the gas enters the interior of the exhaust pipe 1041, the sealing piece 114 is separated from the fixed ring piece 113 under the air pressure. At this time, the test medium inside the exhaust pipe 1041 can be discharged from the drainage pipe 111. After the test medium is discharged, the floating block 1042 loses buoyancy and moves downward. At this time, the air hole 1048 is opened again for exhaust.

[0037] Furthermore, a circulation pump 4 and a flow meter 6 for detecting the flow rate are installed on the circulation pipe 2. A stirring blade assembly 5 for stirring the test medium is installed inside the circulation pipe 2. A temperature sensor 8 for detecting the temperature of the test medium is inserted on the circulation pipe 2. A temperature control sleeve 9 for insulating the test medium is sleeved on the side wall of the circulation pipe 2. Two online densitometers 7 are installed on the circulation pipe 2. A pressure transmitter 10 for detecting the pressure is fixedly connected to the circulation pipe 2.

[0038] Please refer to Figure 6, the device consists of a measurement execution system and an intelligent control system. The measurement execution system includes an automatic liquid dispensing module that can accurately take, dispense, and drain liquid automatically, realizing the automation of zero calibration and full-scale calibration, the automatic calibration of the points to be tested, the density monitoring function is added to the circulation module, multiple temperature monitoring points are added, the automatic temperature control module can achieve a temperature control accuracy of ±1°C, the temperature control range is 10°C to 60°C, and the data automatic acquisition module can achieve the automatic and accurate processing and storage of measurement data; the intelligent control system includes a central control module, a data intelligent processing module, and a data storage module, which can expand the measurement range to 0-100% volume water content.

[0039] During the verification / calibration process, only the calibration points and calibration process of the water content meter need to be set, and the intelligent control system will transmit the instructions to the measurement execution system. The measurement execution system automatically completes the calibration of the water content meter according to the instructions and realizes the dynamic automatic storage of data, thus realizing intelligent calibration, which can bring significant calibration effectiveness to the verification / calibration of on-line petroleum water content testers.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A calibration device based on an oil water content tester, comprising an expansion vessel (1), characterized in that: The expander (1) includes a housing (101). A floating cylinder (102) is slidably connected inside the housing (101). A guide rod (103) is fixedly connected to the upper end of the floating cylinder (102), and the guide rod (103) penetrates through the upper end of the housing (101). An exhaust assembly (104) is communicated with the side wall of the housing (101). A liquid outlet (105) is drilled at the lower end of the expander (1). A double-layer O-ring seal (106) is fixedly connected to the inner side wall of the housing (101), and the floating cylinder (102) contacts the double-layer O-ring seal (106). The exhaust assembly (104) includes an exhaust cylinder (1041) communicated with the expander (1). A floating block (1042) is slidably connected inside the exhaust cylinder (1041). Limiting circular plates (1043) are fixedly connected to both the upper and lower side walls of the floating block (1042). A plurality of water delivery holes (1044) are drilled in the limiting circular plates (1043). A top rod (1045) is fixedly connected to the upper end of the floating block (1042). A sealing ring (1046) is fixedly connected to the upper end of the top rod (1045). A valve cylinder (1047) is fixedly connected to the upper end of the exhaust cylinder (1041), and the sealing ring (1046) is slidably connected inside the valve cylinder (1047). An air hole (1048) is drilled in the side wall of the valve cylinder (1047). A drainage assembly (11) is fixedly connected to the lower end of the exhaust cylinder (1041). A circulation pipe (2) is communicated with the double-layer O-ring seal (106), and the end of the circulation pipe (2) is communicated with the side wall of the housing (101). An oil circuit interface (3) is communicated with the circulation pipe (2).

2. The calibration device based on an oil water content tester according to claim 1, characterized in that: The drainage assembly (11) includes a drainage cylinder (111) communicated with the lower end of the exhaust cylinder (1041). A spring plate (112) is fixedly connected inside the drainage cylinder (111). A fixed ring piece (113) is fixedly connected inside the drainage cylinder (111). A sealing piece (114) is arranged below the fixed ring piece (113). A tension spring (115) is fixedly connected between the spring plate (112) and the sealing piece (114). A support short rod (12) is fixedly connected to the lower inner side wall of the exhaust cylinder (1041).

3. A calibration device based on an oil water content tester according to claim 1, characterized in that: A circulation pump (4) and a flow meter (6) for detecting flow are installed on the circulation pipe (2).

4. A calibration device based on an oil water content tester according to claim 1, characterized in that: A stirring blade assembly (5) for stirring the test medium is installed inside the circulation pipe (2).

5. A calibration device based on an oil water content tester according to claim 1, characterized in that: A temperature sensor (8) for detecting the temperature of the test medium is inserted on the circulation pipe (2), and a temperature control sleeve (9) for heat preservation of the test medium is sleeved on the side wall of the circulation pipe (2).

6. The calibration device based on an oil water content tester according to claim 1, characterized in that: Two on-line densitometers (7) are installed on the circulation pipe (2).

7. A calibration device based on an oil water content tester according to claim 1, characterized in that: A pressure transmitter (10) for detecting pressure is fixedly connected to the circulation pipe (2).

Images