A casing type static crude oil water content analyzer

Abstract

The present invention discloses a casing-type static crude oil water content analyzer, which relates to the technical field of crude oil water content analyzers, including a bypass pipeline, a casing base is fixedly arranged at the bottom of the bypass pipeline, a measuring pipeline is coaxially arranged inside the bypass pipeline, a driving component is fixedly arranged at the bottom of the casing base, and the top of the driving component passes through the casing base and is inserted into the bypass pipeline and fixedly provided with a stop valve. The present invention adopts a casing-type structure, intercepts liquid in the measuring pipeline for static measurement, avoids the interference of the measurement results caused by the unstable flow state of the liquid, the large change of gas content, and the large number of impurities, and ensures the measurement accuracy of the water content; the measuring pipeline is nested inside the bypass pipeline, and no temperature heating and other measures are required during static measurement, and valves and other components used in traditional static crude oil water content analyzers are avoided, which greatly improves the reliability of the product, simplifies the structure, and reduces the cost.

Description

Technical Field

[0001] The invention relates to the technical field of crude oil water content analyzers, in particular to a casing type static crude oil water content analyzer. Background Art

[0002] In the oil field production process, the measurement of water content is crucial to the statistics of oil field production and the understanding of geological changes. In the traditional production process, samples are taken from oil wells manually and brought back to the laboratory for testing to determine the water content of oil products. This method is time-consuming, complicated to operate, and long-term work in the laboratory is harmful to the human body.

[0003] Conventional water content analyzers generally use the method of directly inserting the measuring sensor into the flowing crude oil for dynamic measurement. However, flowing crude oil has problems such as unstable flow state, large changes in gas content, and many impurities, which can easily affect the accuracy of the measurement. Summary of the invention

[0004] In order to improve the above-mentioned conventional water content analyzer which generally extends the measuring sensor directly into the flowing crude oil for dynamic measurement, while the flowing crude oil has problems such as unstable flow state, large variation of gas content, and many impurities, which easily affect the measurement accuracy, the present invention provides a casing type static crude oil water content analyzer.

[0005] The present invention provides a casing type static crude oil water content analyzer, which adopts the following technical solution:

[0006] A casing-type static crude oil water content analyzer comprises a bypass pipeline, a casing base is fixedly arranged at the bottom of the bypass pipeline, a measuring pipeline is coaxially arranged inside the bypass pipeline, a driving assembly is fixedly arranged at the bottom of the casing base, the top of the driving assembly passes through the casing base and is inserted into the bypass pipeline and fixedly arranged with a stop valve, the stop valve is movably arranged between the bypass pipeline and the measuring pipeline, a measuring probe is vertically inserted at the top of the bypass pipeline, the measuring probe is inserted into the measuring pipeline, a liquid inlet pipe and a liquid outlet pipe are fixedly arranged on the outer wall of the bypass pipeline, the internal space of the bypass pipeline is divided into an outer cavity and an inner cavity by the measuring pipeline, a pressure balance pipe is fixedly inserted at the top of the outer wall of the bypass pipeline, and a bypass sampling pipe is fixedly inserted at the bottom of the outer wall of the bypass pipeline;

[0007] A liquid inlet hole is provided at the lower end of the outer wall of the measuring pipe, a liquid outlet hole is provided at the upper end of the outer wall of the measuring pipe, and the liquid inlet hole of the measuring pipe and the liquid inlet pipe of the bypass pipe are arranged in a staggered manner, and an inner cavity sampling tube is arranged on the sleeve base;

[0008] The stop valve comprises a star-shaped sealing ring, a sealing baffle, a polytetrafluoroethylene gasket and a metal fixing block. The sealing baffle is movably arranged between the bypass pipe and the measuring pipe. The cross-section of the sealing baffle is L-shaped. A star-shaped sealing ring is arranged at the upper end of the inner side of the sealing baffle. The star-shaped sealing ring fits the outer wall of the measuring pipe. The polytetrafluoroethylene gasket is fixedly mounted on the sleeve base through the metal fixing block. A channel for connecting the inner cavity with the inner cavity sampling tube is opened on the polytetrafluoroethylene gasket. Two connecting rods are fixedly arranged at the lower end of the sealing baffle. The connecting rods penetrate the metal fixing block and the polytetrafluoroethylene gasket and are movably plugged with the sleeve base.

[0009] When the driving component pushes the connecting rod upward, the sealing baffle and the star-shaped sealing ring move upward and seal the external cavity, and the liquid to be detected enters the measuring pipeline through the liquid inlet hole for detection. When the driving component pulls the connecting rod downward, the sealing baffle and the star-shaped sealing ring move downward and fit with the polytetrafluoroethylene gasket to seal the liquid inlet hole, and the liquid to be detected flows directly through the bypass pipeline.

[0010] Through the above technical solution, when the device is in use, the liquid to be tested enters the bypass pipe from the liquid inlet, and the stop valve allows the liquid entering the pipe to flow through the measuring pipe or the bypass pipe under the control of the driving component. When the driving component controls the stop valve to move downward, the measuring pipe is blocked. At this time, the liquid to be tested enters the bypass pipe through the liquid inlet pipe and is then discharged through the liquid outlet pipe.

[0011] Optionally, in the above-mentioned casing-type static crude oil water content analyzer, the liquid inlet pipe is fixedly arranged at the lower end of the outer wall of the bypass pipe, and the liquid outlet pipe is fixedly arranged at the upper end of the outer wall of the bypass pipe and is lower than the position of the upper opening of the measuring pipe. The liquid inlet pipe and the liquid outlet pipe are fixedly connected to the bypass pipe by welding, the lower end of the bypass pipe is connected to the casing base through a first flange, and a sealing gasket is arranged between the bypass pipe and the casing base.

[0012] Through the above technical solution, the liquid to be detected can enter the bypass pipe through the liquid inlet pipe, and then the liquid can be discharged through the liquid outlet pipe. The bypass pipe and the sleeve base can be assembled together through the first flange, and the sealing gasket can be used to increase the sealing performance when the two are connected.

[0013] Optionally, in the above-mentioned casing-type static crude oil water content analyzer, the lower end of the measuring probe is connected to the casing base via a second flange, and a multi-stage sealing ring is provided at the connection between the measuring probe and the casing base.

[0014] Through the above technical solution, the measuring probe can be conveniently fixedly assembled on the casing base through the second flange, and the sealing performance when the two are connected can be increased through the multi-stage sealing ring.

[0015] Optionally, in the above-mentioned casing-type static crude oil water analyzer, the edge of the upper end of the polytetrafluoroethylene gasket is chamfered, and the edge of the lower end of the sealing baffle corresponding to the chamfer of the polytetrafluoroethylene gasket is chamfered.

[0016] Through the above technical solution, when the sealing baffle moves downward, the lower end of the sealing baffle is squeezed with the cut corner of the polytetrafluoroethylene pad, thereby achieving sealing of the liquid inlet hole.

[0017] Optionally, in the above-mentioned casing-type static crude oil water content analyzer, a through hole is penetrated at the connection between the connecting rod and the casing base, a multi-stage sealing ring is arranged in the through hole, and the connecting rod passes through the multi-stage sealing ring and is connected to the driving assembly.

[0018] With the above technical solution, the connecting rod can be connected to the driving assembly through the sleeve base via the through hole, and the sealing performance of the connection between the connecting rod and the sleeve base is increased through the multi-stage sealing ring.

[0019] Optionally, in the above-mentioned casing-type static crude oil water content analyzer, the driving assembly includes a casing, a motor body, a screw and a push rod. The casing is fixedly arranged at the bottom of the casing base, and a fixing plate is fixedly arranged inside the casing. The upper end of the fixing plate is fixedly connected to the casing base, and the lower end of the fixing plate is fixedly connected to the motor body. The screw is vertically arranged on the rotating shaft of the motor body and fixedly connected to the rotating shaft of the motor body. The push rod is threadedly sleeved on the outer wall of the screw, and the two connecting rods are inserted into the casing through the multi-stage sealing ring and fixedly connected to the two ends of the push rod.

[0020] Through the above technical scheme, the motor body and its related components can be protected by the casing, and the motor body can be fixed inside the casing by the fixing plate. The motor body can drive the screw rod to rotate and make the push rod move up and down along the screw rod, and then drive the connecting rod to move up and down through the push rod.

[0021] Optionally, in the above-mentioned casing-type static crude oil water content analyzer, a bearing fixing seat corresponding to the connecting rod is fixedly provided at the bottom of the casing base, a linear bearing is fixedly provided in the bearing fixing seat, and the connecting rod passes through the casing base and is vertically inserted into the linear bearing.

[0022] Through the above technical solution, the linear bearing is assembled in the sleeve base through the bearing fixing seat, and the linear bearing is used to increase the smoothness of the movement of the connecting rod.

[0023] In summary, the present invention includes at least one of the following beneficial effects:

[0024] This equipment adopts a sleeve structure, intercepting the liquid in the measuring pipe for static measurement, avoiding the interference of the measurement results caused by the unstable liquid flow, large changes in gas content, and many impurities, and ensuring the measurement accuracy of water content;

[0025] The measuring pipeline is nested inside the bypass pipeline. No temperature heating or other measures are required for static measurement. In addition, valves and other components used in traditional static crude oil water content analyzers are avoided. This greatly improves the reliability of the product, simplifies the structure, reduces the cost, and meets the cost budget requirements for large-scale use in oil fields.

[0026] When the stop valve is opened, the liquid to be detected in the bypass pipe enters the measuring pipe through the liquid inlet hole, so that the liquid in the measuring pipe can be detected by the measuring probe, and the liquid inlet hole and the liquid inlet pipe are staggered to reduce the possibility of impurities in the liquid in the liquid inlet pipe directly impacting the measuring probe and affecting the service life of the measuring probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 is a front cross-sectional view of the overall structure of the present invention;

[0029] Figure 3 is a front cross-sectional view of the stop valve and the drive assembly of the present invention;

[0030] Figure 4 is a side sectional view of the stop valve and the drive assembly of the present invention;

[0031] Figure 5 It is a schematic diagram of the stop valve of the present invention when it is opened;

[0032] Figure 6 It is a schematic diagram of the stop valve of the present invention when it is closed.

[0033] In the figure: 1. bypass pipe; 11. pressure balance pipe; 12. bypass sampling tube; 2. casing base; 21. first flange; 22. inner cavity sampling tube; 23. bearing fixing seat; 24. linear bearing; 3. liquid inlet pipe; 4. liquid outlet pipe; 5. measuring pipe; 51. liquid inlet hole; 52. liquid outlet hole; 6. drive assembly; 61. housing; 62. motor body; 63. screw rod; 64. push rod; 65. fixing plate; 7. stop valve; 71. star-shaped sealing ring; 72. sealing baffle; 73. PTFE pad; 74. metal fixing block; 75. connecting rod; 8. measuring probe; 81. second flange. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 The present invention is described in further detail.

[0035] Please refer to the attached figure in the instruction manual Figure 1-6 An embodiment of the present invention is a casing-type static crude oil water analyzer, comprising a bypass pipeline 1, a casing base 2 is fixedly arranged at the bottom of the bypass pipeline 1, a pressure balance pipe 11 is fixedly inserted at the top of the outer wall of the bypass pipeline 1, and a bypass sampling pipe 12 is fixedly inserted at the bottom of the outer wall of the bypass pipeline 1. The pressure balance pipe 11 is used to facilitate pressure relief and exhaust of the bypass pipeline 1. When it is necessary to sample the liquid, the pressure balance pipe 11 is opened to allow air to enter the bypass pipeline 1. At this time, the liquid flows out through the bypass sampling pipe 12, so that the operator can sample the liquid between the bypass pipeline 1 and the casing base 2.

[0036] The outer wall of the bypass pipe 1 is fixedly provided with a liquid inlet pipe 3 and a liquid outlet pipe 4. The liquid inlet pipe 3 is fixedly provided at the lower end of the outer wall of the bypass pipe 1, and the liquid outlet pipe 4 is fixedly provided at the upper end of the outer wall of the bypass pipe 1, and is lower than the position of the upper end opening of the measuring pipe 5. The liquid inlet pipe 3 and the liquid outlet pipe 4 are fixedly connected to the bypass pipe 1 by welding. The lower end of the bypass pipe 1 is connected to the sleeve base 2 by a first flange 21, and a sealing gasket is provided between the bypass pipe 1 and the sleeve base 2. The liquid to be detected can enter the bypass pipe 1 through the liquid inlet pipe 3, and then the liquid is discharged through the liquid outlet pipe 4. The bypass pipe 1 and the sleeve base 2 are conveniently assembled together through the first flange 21, and the static sealing of the bypass pipe is realized by the sealing gasket, and the sealing performance when the two are connected is increased.

[0037] A measuring pipe 5 is coaxially arranged inside the bypass pipe 1, a driving assembly 6 is fixedly arranged at the bottom of the casing base 2, the top of the driving assembly 6 passes through the casing base 2 and is inserted into the bypass pipe 1 and is fixedly arranged with a stop valve 7, the stop valve 7 includes a star-shaped sealing ring 71, a sealing baffle 72, a polytetrafluoroethylene pad 73 and a metal fixing block 74, the sealing baffle 72 is movably arranged between the bypass pipe 1 and the measuring pipe 5, the cross-section of the sealing baffle 72 is L-shaped, a star-shaped sealing ring 71 is arranged on the upper end of the inner side of the sealing baffle 72, the star-shaped sealing ring 71 is fitted with the outer wall of the measuring pipe 5, the polytetrafluoroethylene pad 73 is fixedly installed on the casing base 2 through the metal fixing block 74, and a hole for connecting the inner The channel between the cavity and the inner cavity sampling tube 22, two connecting rods 75 are fixedly arranged at the lower end of the sealing baffle 72, the connecting rod 75 passes through the metal fixing block 74, the polytetrafluoroethylene pad 73 and is movably connected to the sleeve base 2, and is linked with the driving component 6 through the two connecting rods 75. When the driving component 6 pushes the connecting rod 75 to move upward, the sealing baffle 72 and the star-shaped sealing ring 71 move upward and seal the outer cavity. At this time, the liquid to be detected enters the measuring pipe 5 through the liquid inlet hole 51 for detection. When the driving component 6 pulls the connecting rod 75 to move downward, the sealing baffle 72 and the star-shaped sealing ring 71 move downward and fit the polytetrafluoroethylene pad 73, thereby sealing the liquid inlet hole 51. At this time, the liquid to be detected directly circulates through the bypass pipe 1.

[0038] The upper edge of the PTFE pad 73 is chamfered, and the lower edge of the sealing baffle 72 corresponding to the chamfer of the PTFE pad 73 is chamfered. When the sealing baffle 72 moves downward, the lower end of the sealing baffle 72 is squeezed by the chamfer of the PTFE pad 73, thereby sealing the liquid inlet 51.

[0039] A through hole is provided at the connection between the connecting rod 75 and the sleeve base 2, and a multi-stage sealing ring is arranged in the through hole. The connecting rod 75 passes through the multi-stage sealing ring and is connected to the drive assembly 6. The through hole enables the connecting rod 75 to be connected to the drive assembly 6 through the sleeve base 2, and the sealing performance of the connection between the connecting rod 75 and the sleeve base 2 is increased by the multi-stage sealing ring, thereby reducing the possibility of liquid leaking to the drive assembly 6 through the connecting rod 75.

[0040] The stop valve 7 is movably arranged between the bypass pipe 1 and the measuring pipe 5. The internal space of the bypass pipe 1 is divided into an outer cavity and an inner cavity by the measuring pipe 5. The internal space of the bypass pipe 1 is divided into an outer cavity and an inner cavity by the measuring pipe 5, and the flow direction of the liquid to be detected is controlled by the stop valve 7. When the stop valve 7 is opened, the outer cavity is blocked. At this time, the liquid to be detected can enter the inner cavity of the measuring pipe 5 for detection. When the stop valve 7 is closed, the inner cavity is blocked. At this time, the liquid to be detected is directly discharged through the liquid outlet pipe 4 of the bypass pipe 1.

[0041] The driving assembly 6 includes a casing 61, a motor body 62, a screw 63 and a push rod 64. The casing 61 is fixedly arranged at the bottom of the sleeve base 2. A fixing plate 65 is fixedly arranged inside the casing 61. The upper end of the fixing plate 65 is fixedly connected to the sleeve base 2, and the lower end of the fixing plate 65 is fixedly connected to the motor body 62. The screw 63 is vertically arranged on the rotating shaft of the motor body 62 and is fixedly connected to the rotating shaft of the motor body 62. The push rod 64 is threadedly sleeved on the outer wall of the screw 63. Two connecting rods 75 are inserted into the casing 61 through the multi-stage sealing ring and are fixedly connected to the two ends of the push rod 64. The casing 61 is convenient for protecting the motor body 62 and related components, and the motor body 62 is fixed inside the casing 61 through the fixing plate 65. The motor body 62 is convenient for driving the screw 63 to rotate and the push rod 64 to move up and down along the screw 63, and then the connecting rod 75 is driven up and down by the push rod 64, thereby controlling the sealing baffle 72 to move up and down to realize the opening and closing action.

[0042] A measuring probe 8 is vertically inserted into the top of the bypass pipe 1, and the measuring probe 8 is inserted into the measuring pipe 5. The lower end of the measuring probe 8 is connected to the casing base 2 through a second flange 81, and a multi-stage sealing ring is provided at the connection between the measuring probe 8 and the casing base 2. The second flange 81 is used to facilitate the fixing and assembly of the measuring probe 8 on the casing base 2, and the multi-stage sealing ring is used to increase the sealing performance when the two are connected.

[0043] A bearing fixing seat 23 corresponding to the connecting rod 75 is fixedly provided at the bottom of the sleeve base 2, and a linear bearing 24 is fixedly provided in the bearing fixing seat 23. After the connecting rod 75 passes through the sleeve base 2, it is vertically inserted into the linear bearing 24. The linear bearing 24 is assembled in the sleeve base 2 through the bearing fixing seat 23. The linear bearing 24 facilitates the smoothness of the movement of the connecting rod 75. A dust ring is provided in the bearing fixing seat 23, so as to reduce the possibility that impurities adhering to the surface of the connecting rod 75 of the sealing baffle 72 will affect the sealing effect when the connecting rod 75 is pulled out.

[0044] A liquid inlet hole 51 is provided at the lower end of the outer wall of the measuring pipe 5, and a liquid outlet hole 52 is provided at the upper end of the outer wall of the measuring pipe 5. The measuring pipe 5 is connected to the bypass pipe 1 through the liquid outlet hole 52, and the liquid inlet hole 51 of the measuring pipe 5 and the liquid inlet pipe 3 of the bypass pipe 1 are staggered. Specifically, the liquid in the measuring pipe 5 can overflow into the bypass pipe 1 through the liquid outlet hole 52, and a control valve can be provided in the liquid outlet hole 52 to control the opening and closing of the liquid outlet hole 52. When the stop valve 7 is closed, the liquid inside the measuring pipe 5 contains gas, and the gas is at the top of the measuring pipe 5 at this time, thereby reducing the possibility of the liquid inside the bypass pipe 1 flowing into the measuring pipe 5 through the liquid outlet hole 52.

[0045] When the stop valve 7 is opened, the liquid to be detected entering the bypass pipe 1 enters the measuring pipe 5 through the liquid inlet hole 51, so that the liquid in the measuring pipe 5 can be detected by the measuring probe 8. When the stop valve 7 is closed, the undetected liquid flows directly through the bypass pipe 1. The liquid inlet hole 51 and the liquid inlet pipe 3 are staggered, specifically, the staggered angle between the liquid inlet hole 51 and the liquid inlet pipe 3 is 90°, thereby reducing the possibility that impurities in the liquid in the liquid inlet pipe 3 directly impact the measuring probe 8 and affect the service life of the measuring probe 8.

[0046] An inner cavity sampling tube 22 is fixedly inserted into the outer wall of the casing base 2, and the inner cavity sampling tube 22 is connected to the inner wall of the measuring pipe 5. When the liquid detection in the measuring pipe 5 is completed, the operator opens the inner cavity sampling tube 22, and then the liquid retained in the measuring pipe 5 flows out through the groove on the casing base 2 through the inner cavity sampling tube 22, and is collected by a sampling bucket, and then brought back to the laboratory, and other measurement methods are used to measure the water content to verify the accuracy of the water content measurement of the casing type static crude oil water content analyzer.

[0047] Working principle: When the casing-type static crude oil water content analyzer is used, when the equipment is powered on and the start-up time is reached, the electronic controller controls the drive component 6 to work, and the drive component 6 drives the stop valve 7 to move upward. At this time, the stop valve 7 is opened, the bypass pipeline 1 is closed, and the measuring pipeline 5 is opened. The liquid to be detected enters the bypass pipeline 1 through the liquid inlet pipe 3 and passes through the measuring pipeline 5;

[0048] After a period of time, the driving component 6 drives the stop valve 7 to move downward, at which time the stop valve 7 is closed, the bypass pipe 1 is opened, and the measuring pipe 5 is closed. The liquid to be tested passes through the bypass pipe 1 and is discharged through the liquid outlet pipe 4. At this time, the liquid flowing through the measuring pipe 5 is intercepted and sampled, and then the water content is measured and analyzed through the measuring probe 8 in the measuring pipe 5.

[0049] When the measurement time set by the electronic controller is reached, the electronic controller controls the drive component 6 to operate again, and the drive component 6 drives the stop valve 7 to open. The liquid to be tested passes through the measuring pipe 5 again, and takes away the liquid intercepted and retained in the pipe last time for replacement, thus entering the next sampling measurement cycle.

[0050] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A casing-type static crude oil water content analyzer, comprising a bypass pipeline (1), characterized in that: A casing base (2) is fixedly arranged at the bottom of the bypass pipeline (1), a measuring pipeline (5) is coaxially arranged inside the bypass pipeline (1), a driving assembly (6) is fixedly arranged at the bottom of the casing base (2), the top end of the driving assembly (6) passes through the casing base (2) and is inserted into the bypass pipeline (1) and fixedly arranged with a stop valve (7), the stop valve (7) is movably arranged between the bypass pipeline (1) and the measuring pipeline (5), a measuring probe (8) is vertically inserted at the top of the bypass pipeline (1), the measuring probe (8) is inserted into the measuring pipeline (5), a liquid inlet pipe (3) and a liquid outlet pipe (4) are fixedly arranged on the outer wall of the bypass pipeline (1), the internal space of the bypass pipeline (1) is divided into an outer cavity and an inner cavity by the measuring pipeline (5), a pressure balance pipe (11) is fixedly inserted at the top of the outer wall of the bypass pipeline (1), and a bypass sampling pipe (12) is fixedly inserted at the bottom of the outer wall of the bypass pipeline (1); A liquid inlet hole (51) is provided at the lower end of the outer wall of the measuring pipe (5), a liquid outlet hole (52) is provided at the upper end of the outer wall of the measuring pipe (5), and the liquid inlet hole (51) of the measuring pipe (5) and the liquid inlet pipe (3) of the bypass pipe (1) are arranged in an offset manner, and an inner cavity sampling tube (22) is provided on the sleeve base (2); The stop valve (7) comprises a star-shaped sealing ring (71), a sealing baffle (72), a polytetrafluoroethylene gasket (73) and a metal fixing block (74); the sealing baffle (72) is movably arranged between the bypass pipe (1) and the measuring pipe (5); the cross-section of the sealing baffle (72) is L-shaped; the upper end of the inner side of the sealing baffle (72) is provided with a star-shaped sealing ring (71); the star-shaped sealing ring (71) is fitted with the outer wall of the measuring pipe (5); the polytetrafluoroethylene gasket (73) is fixedly mounted on the sleeve base (2) through the metal fixing block (74); the polytetrafluoroethylene gasket (73) is provided with a channel for connecting the inner cavity with the inner cavity sampling tube (22); two connecting rods (75) are fixedly arranged at the lower end of the sealing baffle (72); the connecting rods (75) penetrate the metal fixing block (74) and the polytetrafluoroethylene gasket (73) and are movably plugged with the sleeve base (2); When the driving component (6) pushes the connecting rod (75) upward, the sealing baffle (72) and the star-shaped sealing ring (71) move upward and seal the outer cavity, and the liquid to be detected enters the measuring pipe (5) through the liquid inlet hole (51) for detection. When the driving component (6) pulls the connecting rod (75) downward, the sealing baffle (72) and the star-shaped sealing ring (71) move downward and fit with the polytetrafluoroethylene gasket (73) to seal the liquid inlet hole (51), and the liquid to be detected flows directly through the bypass pipe (1).

2. The casing-type static crude oil water content analyzer according to claim 1 is characterized in that: The liquid inlet pipe (3) is fixedly arranged at the lower end of the outer wall of the bypass pipe (1), and the liquid outlet pipe (4) is fixedly arranged at the upper end of the outer wall of the bypass pipe (1) and is lower than the position of the upper opening of the measuring pipe (5). The liquid inlet pipe (3) and the liquid outlet pipe (4) are fixedly connected to the bypass pipe (1) by welding. The lower end of the bypass pipe (1) is connected to the sleeve base (2) via a first flange (21), and a sealing gasket is arranged between the bypass pipe (1) and the sleeve base (2).

3. The casing type static crude oil water content analyzer according to claim 1 is characterized in that: The lower end of the measuring probe (8) is connected to the casing base (2) via a second flange (81), and a multi-stage sealing ring is sleeved at the connection between the measuring probe (8) and the casing base (2).

4. The casing type static crude oil water content analyzer according to claim 1 is characterized in that: The edge of the upper end of the polytetrafluoroethylene gasket (73) is chamfered, and the edge of the lower end of the sealing baffle (72) corresponding to the chamfer of the polytetrafluoroethylene gasket (73) is chamfered.

5. The casing type static crude oil water content analyzer according to claim 1 is characterized in that: A through hole is formed through the connection between the connecting rod (75) and the sleeve base (2), a multi-stage sealing ring is arranged in the through hole, and the connecting rod (75) passes through the multi-stage sealing ring and is connected to the driving assembly (6).

6. The casing type static crude oil water content analyzer according to claim 1 is characterized in that: The driving assembly (6) comprises a housing (61), a motor body (62), a screw (63) and a push rod (64); the housing (61) is fixedly arranged at the bottom of the sleeve base (2); a fixing plate (65) is fixedly arranged inside the housing (61); the upper end of the fixing plate (65) is fixedly connected to the sleeve base (2); the lower end of the fixing plate (65) is fixedly connected to the motor body (62); the screw (63) is vertically arranged on the rotating shaft of the motor body (62) and is fixedly connected to the rotating shaft of the motor body (62); the push rod (64) is threadedly sleeved on the outer wall of the screw (63); the two connecting rods (75) pass through the multi-stage sealing ring, are inserted into the housing (61) and are fixedly connected to the two ends of the push rod (64).

7. The casing-type static crude oil water content analyzer according to claim 6 is characterized in that: A bearing fixing seat (23) corresponding to the connecting rod (75) is fixedly provided at the bottom of the sleeve base (2), a linear bearing (24) is fixedly provided inside the bearing fixing seat (23), and the connecting rod (75) passes through the sleeve base (2) and is vertically inserted into the linear bearing (24).

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