Split type crude oil moisture content measuring device

Abstract

The utility model belongs to the technical field of testing or analyzing materials by means of chemical or physical properties of measured materials, and particularly relates to a split type crude oil moisture content measuring device which comprises a measuring pipe used for being connected to a pipeline to be measured, and one end of the measuring pipe is connected with a probe used for stretching into the pipeline to be measured. A measuring circuit board in signal connection with the probe is arranged in the measuring tube, the other end of the measuring tube is hermetically connected with a joint, the joint comprises a shell and a conductor fixed on the shell, one end, facing the inside of the measuring tube, of the conductor is electrically connected with the measuring circuit board, and the other end of the conductor forms a connecting end used for being electrically connected with a data comprehensive processing unit; the split type crude oil moisture content measuring device further comprises a protecting cover which is detachably connected to the connector so as to protect the connecting end. During measurement, detection can be carried out only by connecting the connecting end with the data comprehensive processing unit, so that the use cost is saved. When only part of oil wells need to be detected, only the data comprehensive processing unit needs to be connected to the connecting end of the corresponding wellhead, and use is more flexible.

Description

Technical Field

[0001] The utility model relates to a split type crude oil water content measuring device, belonging to the technical field of testing or analyzing materials by means of measuring the chemical or physical properties of the materials. Background Art

[0002] In oilfield production, the water content of crude oil is an important parameter that needs to be observed in time during crude oil extraction. It directly affects the extraction effect of crude oil and is the key to affecting the efficiency of oil wells. Therefore, it is of great significance to monitor the water content of crude oil in time during oilfield production.

[0003] The invention patent application with the existing application publication number CN112924475A discloses a water content measurement sensor and a crude oil water content detection system based on the short wave method. The water content measurement sensor (i.e., water content measurement device) includes a probe sealing sleeve connected to the oil pipeline, the front end of the probe sealing sleeve is closed, and a ring probe (i.e., probe) for detecting the water content of crude oil in the oil pipeline is arranged inside. The rear end of the probe sealing sleeve is connected to a circuit protection tube (i.e., measuring tube) through a joint body, and a measuring circuit board is arranged inside the circuit protection tube. One side of the measuring circuit board is electrically connected to the ring probe, and the other side of the measuring circuit board is connected to a data comprehensive processing unit in an outdoor explosion-proof box through an electrical cable. When in use, a "one-to-many" wired fixed connection data processing method is adopted, that is, one well site is equipped with a set of data comprehensive processing units, which are used to process the wired transmission data of the measuring circuit boards of all wellhead measuring sensors in the well site.

[0004] Although the above structure can detect the water content of crude oil in the oil pipeline, it adopts a "one-to-many" wired fixed connection layout, and the distance between the oil pipelines to be tested at each wellhead in the well site is relatively far, so the laying of related pipelines requires a high cost. In addition, for some wellheads that are not in production or do not need to be measured temporarily, the pipelines laid between the oil pipeline to be tested and the data comprehensive processing unit constitute a great waste, resulting in a high cost of use. For some well sites with many wellheads to be tested, there are insufficient connection interfaces of the data comprehensive processing unit, which cannot meet the use of many oil pipelines to be tested, which leads to inflexible use scenarios. Utility Model Content

[0005] The utility model aims to provide a split crude oil water content measuring device to solve the problems of high use cost and insufficient flexibility in use scenarios caused by the existing crude oil water content measuring device adopting a "one-to-many" wired fixed connection with a data comprehensive processing unit.

[0006] In order to achieve the above purpose, the split type crude oil water content measuring device of the utility model adopts the following technical scheme:

[0007] A split crude oil water content measuring device comprises a measuring tube for connecting to a pipeline to be measured, a probe for extending into the pipeline to be measured is connected to one end of the measuring tube, a measuring circuit board electrically connected to the probe is arranged inside the measuring tube, a joint is sealedly connected to the other end of the measuring tube, the joint comprises a shell and a conductor fixed on the shell, one end of the conductor facing the inside of the measuring tube is electrically connected to the measuring circuit board, and one end of the conductor facing the outside of the measuring tube constitutes a connecting end for electrically connecting to a data integrated processing unit, and the split crude oil water content measuring device also comprises a protective cover for detachably connecting to the joint to protect the connecting end.

[0008] Beneficial effects: The utility model belongs to an improved invention, which is achieved by sealing a joint on the measuring tube. The joint includes a shell and a conductor fixed on the shell. The end of the conductor facing the outside of the measuring tube constitutes a connection end for electrical connection with the data comprehensive processing unit. When in use, the split crude oil water content measuring device is fixed to the pipeline to be measured. When the pipeline to be measured needs to be measured, it is only necessary to connect the data comprehensive processing unit through the connection end to detect the medium in the pipeline to be measured. Compared with the prior art, the crude oil water content measuring device and the data comprehensive processing unit are set separately, and there is no need to lay a large number of pipelines. It is only necessary to connect the data comprehensive processing unit to the measuring device when in use, thereby saving the use cost. At the same time, when only the medium in some of the oil wells among many oil wells needs to be detected, it is only necessary to connect the data comprehensive processing unit to the connection end of the split crude oil water content measuring device on the wellhead of the corresponding oil well, which is more flexible to use. When there is no need to measure the water content of the crude oil in the oil well, that is, when the split-type crude oil water content measuring device on the pipeline to be measured is in an idle state, the connecting end of the conductor at the joint is not connected to the data integrated processing unit, but is in an exposed state. Since the split-type crude oil water content measuring device is mostly installed in a relatively harsh environment, in order to prevent the connecting end from being unusable due to wind, sun or interference from foreign objects, a protective cover for protecting the connecting end can be detachably connected to the joint to protect the connecting end when the split-type crude oil water content measuring device is not connected to the data integrated processing unit, thereby preventing the connecting end from being damaged and increasing the service life of the split-type crude oil water content measuring device.

[0009] Furthermore, a groove is provided at one end of the shell away from the measuring tube, and the connecting end is arranged in the groove.

[0010] Furthermore, the protective cover includes a cover body and a flange, and the flange is interference fitted with the shell.

[0011] Furthermore, the protective cover is arranged on the housing through a flexible connection structure.

[0012] Furthermore, the shell is connected to the measuring tube by screws, the top of the measuring tube is provided with a thickened section with thickened side walls, the thickened section is provided with threaded holes for installing screws, and the shell is correspondingly provided with through holes for the screws to pass through.

[0013] Furthermore, the lower part of the measuring tube is provided with a large diameter section, a middle diameter section and a small diameter section whose diameters gradually decrease from top to bottom, and the middle diameter section is provided with an external thread for threaded connection with a connecting pipe fixed on the pipeline to be measured.

[0014] Furthermore, the measuring tube is provided with a square tube section for screwing.

[0015] Furthermore, a mounting ring is provided at the end of the small diameter section, and a first sealing ring is sleeved outside the mounting ring for abutting against the pipe to be tested for sealing when the medium diameter section is threadedly connected to the connecting pipe.

[0016] Furthermore, a sealing groove is provided between the large diameter section and the medium diameter section, and a second sealing ring for sealingly cooperating with the inner side wall of the connecting pipe is provided in the sealing groove.

[0017] Furthermore, the portion of the probe extending into the measuring tube is threadedly connected to the measuring tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a split type crude oil water content measuring device of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle joint;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the measuring tube;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the probe;

[0022] Figure 5 for Figure 1 Schematic diagram of the structure of the measurement circuit board;

[0023] Figure 6 for Figure 1 Schematic diagram of the split crude oil water content measuring device in use.

[0024] In the figure: 1, connector; 11, shell; 111, groove; 112, bottom socket; 12, conductor; 121, connection end; 13, cover; 14, through hole; 15, connection cord; 16, screw; 2, measuring tube; 21, square inner hole; 22, thickened section; 23, sealing groove; 24, large diameter section; 25, medium diameter section; 251, external thread; 26, small diameter section; 261, internal thread; 27, mounting ring; 28, square tube section; 3, probe; 31, probe electrode; 32, connecting thread; 33, probe; 4, measuring circuit board; 41, plug electrode; 42, upper lead plug; 43, upper lead; 44, detection signal processing board; 45, lower lead; 5, first sealing ring; 6, second sealing ring; 7, connecting tube; 8, crude oil pipeline; 81, probe mounting hole; 9, data integrated processing unit; 91, data line. DETAILED DESCRIPTION

[0025] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0026] In view of the technical problems existing in the prior art, the basic technical concept of the utility model is:

[0027] By sealing a joint on the measuring tube, the joint includes a shell and a conductor fixed on the shell, and one end of the conductor facing the outside of the measuring tube constitutes a connection end for electrically connecting to a data comprehensive processing unit. When in use, the split crude oil water content measuring device is fixed to the pipeline to be measured. When the pipeline to be measured needs to be measured, it is only necessary to connect the data comprehensive processing unit through the connection end to detect the medium in the pipeline to be measured. Compared with the prior art, the crude oil water content measuring device and the data comprehensive processing unit are set separately, and there is no need to lay a large number of pipelines. It is only necessary to connect the data comprehensive processing unit to the measuring device when in use, thereby saving the use cost. At the same time, when only the medium in some of the oil wells among many oil wells needs to be detected, it is only necessary to connect the data comprehensive processing unit to the connection end of the split crude oil water content measuring device on the wellhead of the corresponding oil well, which is more flexible to use. When there is no need to measure the water content of the crude oil in the oil well, that is, when the split-type crude oil water content measuring device on the pipeline to be measured is in an idle state, the connecting end of the conductor at the joint is not connected to the data integrated processing unit, but is in an exposed state. Since the split-type crude oil water content measuring device is mostly installed in a relatively harsh environment, in order to prevent the connecting end from being unusable due to wind, sun or interference from foreign objects, a protective cover for protecting the connecting end can be detachably connected to the joint to protect the connecting end when the split-type crude oil water content measuring device is not connected to the data integrated processing unit, thereby preventing the connecting end from being damaged and increasing the service life of the split-type crude oil water content measuring device.

[0028] Based on the above concept, the embodiment of the split type crude oil water content measuring device of the utility model is as follows:

[0029] like Figure 1 , Figure 2 , Figure 6 As shown, the split crude oil water content measuring device includes a measuring tube 2 for connecting to the pipeline to be measured, one end of the measuring tube 2 is connected to a probe 3 for extending into the pipeline to be measured, and a measuring circuit board 4 electrically connected to the probe 3 is also provided inside the measuring tube 2. The other end of the measuring tube 2 is sealed and connected to a joint 1, and the joint 1 includes a shell 11 and a conductor 12 fixed on the shell 11. The end of the conductor 12 facing the inside of the measuring tube is electrically connected to the measuring circuit board 4, and the end of the conductor 12 facing the outside of the measuring tube 2 constitutes a connection end 121 for electrically connecting to the data integrated processing unit 9. Specifically, as Figure 3 , Figure 4 , Figure 5 As shown, the measuring tube 2 includes a bottom for connecting the probe 3 and a top for installing the joint 1. The bottom of the measuring tube 2 is provided with an internal thread 261, and the probe 3 is correspondingly provided with a connecting thread 32. The probe 3 partially extends into the bottom of the measuring tube 2 and is threadedly connected to the measuring tube 2 through the connecting thread 32 and the internal thread 261. The probe 3 also includes a probe 33 and a probe electrode 31. The probe electrode 31 is signal-connected to the lower lead 45 of the measuring circuit board 4 so that when the circuit is energized, the signal generated by the probe 33 detecting the medium is transmitted to the detection signal processing board 44 in the measuring circuit board 4. The detection signal processing board 44 is then electrically connected to the joint 1 through the upper lead 43 and the upper lead plug 42. The upper lead plug 42 is provided with a plug electrode 41, as shown in FIG. Figure 2 As shown, the connector 1 is provided with a bottom socket 112, and the two are plugged in to make the upper lead 43 electrically connected to the conductor 12 in the connector 1 to transmit the signal in the detection signal processing board 44.

[0030] like Figure 1 , Figure 2As shown, a groove 111 is further provided at one end of the housing 11 away from the measuring tube 2, and the connecting end 121 is arranged in the groove 111, so as to prevent the connecting end 121 from being damaged by accidental collision when not in use. To further protect the connecting end 121 from damage, the split crude oil water content measuring device also includes a protective cover 13 for detachably connecting to the joint 1 to protect the connecting end 121, and the protective cover 13 includes a cover body and a flange, and the flange is installed on the housing 11 by interference fitting with the housing 11 so that the cover body protects the connecting end 121, and prevents the connecting end 121 from being damaged by collision or foreign matter from entering the groove 111, so that the connecting end 121 cannot form an electrical connection with the data comprehensive processing unit 9. When there is no need to detect the medium in the pipeline to be tested, the protective cover 13 is sleeved on the housing 11 of the joint 1, and the protective cover 13 is removed before the detection. To prevent the removed protective cover 13 from being lost, the protective cover 13 is flexibly connected to the housing 11. Specifically, the protective cover 13 is tied to the housing 11 using the connecting cord 15 to prevent the removed protective cover 13 from being lost, which results in failure to effectively protect the connection end 121 .

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, the housing 11 is connected to the measuring tube 2 by screws, and the top of the measuring tube 2 is provided with a thickened section 22 with thickened side walls, and the thickened section 22 is provided with threaded holes for installing screws 16, and the housing 11 is correspondingly provided with through holes 14 for the screws 16 to pass through. During installation, the bottom of the housing 11 is inserted into the square inner hole 21 of the measuring tube 2, and the through holes 14 correspond to the threaded holes on the thickened section 22 one by one, and then the screws 16 are installed. The thickened section 22 provided on the top of the measuring tube 2 is convenient for processing the corresponding threaded holes for the installation of the housing 11, and on the other hand, it prevents the measuring tube 2 from being too thick as a whole, thereby saving materials and reducing the weight of the measuring tube 2.

[0032] like Figure 3 , Figure 6 As shown, the lower part of the measuring tube 2 is provided with a large diameter section 24, a middle diameter section 25 and a small diameter section 26, the diameters of which gradually decrease from top to bottom, and the middle diameter section 25 is provided with an external thread 251 for threaded connection with the connecting tube 7. The installation form of the measuring tube 2 is set as a threaded connection, which is more convenient for processing and use, and the small diameter section 26 and the large diameter section 24 are provided to facilitate the insertion of the measuring tube 2 into the connecting tube 7 during installation and the axial stop with the connecting tube 7 after the installation is completed. In order to further facilitate the installation of the measuring tube 2 on the connecting tube 7, the measuring tube 2 is also provided with a square tube section 28 for screwing.

[0033] like Figure 1 , Figure 3 , Figure 6As shown, a mounting ring 27 is provided at the end of the small diameter section 26, and a first sealing ring 5 is sleeved on the outside of the mounting ring 27 for abutting against the pipe to be measured for sealing when the middle diameter section 25 is threadedly connected to the connecting pipe 7. In order to further enhance the seal between the measuring pipe 2 and the connecting pipe 7 and prevent leakage of the medium to be measured, a sealing groove 23 is provided between the large diameter section 24 and the middle diameter section 25, and a second sealing ring 6 for sealing with the inner side wall of the connecting pipe 7 is provided in the sealing groove 23.

[0034] The working process of the split type crude oil water content measuring device of the utility model is as follows:

[0035] The pipeline to be measured in this embodiment is a crude oil pipeline 8, which is connected to the split crude oil water content measuring device through a connecting pipe 7. Before installation, the well is stopped or the valve of the crude oil pipeline 8 is closed to drain the internal crude oil. The split crude oil water content measuring device is inserted into the connecting pipe 7 through the probe installation hole 81 from one end of the probe 3, and the measuring pipe 2 is threadedly connected to the connecting pipe 7 by screwing the square pipe section 28. When installed in place, one end of the large diameter section 24 close to the middle diameter section 25 cooperates with the stopper of the connecting pipe 7, the probe 33 extends into the crude oil pipeline 8, the first sealing ring 5 is sleeved on the installation ring 27 and tightly seals the crude oil pipeline 8, and the second sealing ring 6 at the sealing groove 23 cooperates with the connecting pipe 7 in a sealing manner. After the split crude oil water content measuring device is installed in the crude oil pipeline 8, normal production is carried out or the valve of the crude oil pipeline 8 is opened to fill the crude oil pipeline 8 with crude oil. When it is necessary to measure the water content, the protective cover 13 on the housing 11 is pulled out, and the data integrated processing unit 9 is connected to the connection end 121 through the data line 91. The signal generated by the probe 31 detecting the crude oil in the crude oil pipeline 8 can be processed by the detection signal processing board 44 and then transmitted to the data integrated processing unit 9 through the connector 1 and the data line 91, thereby detecting the water content of the crude oil. After the detection is completed, the data line 91 is pulled out, and the protective cover 13 is re-set on the housing 11 to protect the connection end 121 from damage.

[0036] In other embodiments, the portion of the probe extending into the measuring tube is no longer threadedly connected to the measuring tube, but welded.

[0037] In other embodiments, the second sealing ring may not be arranged between the large diameter section and the middle diameter section, but the second sealing ring may be arranged at a position where the middle diameter section is far away from the large diameter section. In other embodiments, the second sealing ring may not be arranged, but the leakage of crude oil may be prevented only by the sealing cooperation between the measuring tube and the crude oil pipeline at the first sealing ring.

[0038] In other embodiments, the first sealing ring may no longer be provided, and crude oil leakage may be avoided only by the sealing cooperation between the measuring tube and the connecting tube at the second sealing ring.

[0039] In other embodiments, the first sealing ring may be arranged in the middle of the small diameter section to seal with the connecting pipe instead of being arranged at the end of the small diameter section and pressed against the crude oil pipeline to seal.

[0040] In other embodiments, the shape of the large diameter section may be set to a square for screwing. In other embodiments, the square tube section for screwing may no longer be provided on the measuring tube, and the measuring tube may be a round tube as a whole.

[0041] In other embodiments, an external thread for threaded connection with the connecting pipe is no longer provided on the middle diameter section, but a through hole for bolt connection with the connecting pipe is provided on the large diameter section, and a corresponding threaded hole for bolt installation is provided on the connecting pipe. In this case, the middle diameter section may not be provided.

[0042] In other embodiments, the housing and the measuring tube may be connected by threads instead of screws, that is, the bottom of the housing and the top of the measuring tube are provided with internal and external threads for assembly. In other embodiments, the measuring tube may be thickened as a whole instead of having a separate thickening section.

[0043] In other embodiments, the protective cover and the housing may no longer be provided with a flexible connection structure, but may be hingedly mounted on the housing. In other embodiments, the protective cover and the housing may also be provided as separate bodies.

[0044] In other embodiments, the protective cover may no longer be interference fitted with the housing, but the protective cover may be threadedly connected and installed on the housing. In other embodiments, the protective cover may also be connected to the housing by bolts.

[0045] In other embodiments, the end of the housing away from the measuring tube may no longer be provided with a groove, but the connecting end may be directly protruded on the housing.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A split type crude oil water content measuring device, comprising a measuring tube for connecting to a pipeline to be measured, one end of the measuring tube is connected to a probe for extending into the pipeline to be measured, and a measuring circuit board electrically connected to the probe is provided inside the measuring tube, characterized in that: The other end of the measuring tube is sealed with a joint, which includes a shell and a conductor fixed on the shell. The end of the conductor facing the inside of the measuring tube is electrically connected to the measuring circuit board, and the end of the conductor facing the outside of the measuring tube constitutes a connection end for electrically connecting to the data integrated processing unit. The split crude oil water content measuring device also includes a protective cover that is detachably connected to the joint to protect the connection end.

2. The split type crude oil water content measuring device according to claim 1 is characterized in that: A groove is provided at one end of the shell away from the measuring tube, and the connecting end is arranged in the groove.

3. The split type crude oil water content measuring device according to claim 1 or 2, characterized in that: The protective cover comprises a cover body and a flange, and the flange is interference fitted with the shell.

4. The split type crude oil water content measuring device according to claim 1 or 2, characterized in that: The protective cover is arranged on the housing through a flexible connection structure.

5. The split type crude oil water content measuring device according to claim 1 or 2, characterized in that: The shell is connected to the measuring tube by screws. The top of the measuring tube is provided with a thickened section with thickened side walls. The thickened section is provided with threaded holes for installing screws. The shell is correspondingly provided with through holes for the screws to pass through.

6. The split type crude oil water content measuring device according to claim 1 or 2, characterized in that: The lower part of the measuring tube is provided with a large diameter section, a middle diameter section and a small diameter section with diameters gradually decreasing from top to bottom, and the middle diameter section is provided with an external thread for threaded connection with a connecting pipe fixed on the pipeline to be measured.

7. The split type crude oil water content measuring device according to claim 6 is characterized in that: The measuring tube is provided with a square tube section for screwing.

8. The split type crude oil water content measuring device according to claim 6 is characterized in that: The end of the small diameter section is provided with a mounting ring, and the outer sleeve of the mounting ring is provided with a first sealing ring for abutting against the pipe to be tested for sealing when the medium diameter section is threadedly connected with the connecting pipe.

9. The split type crude oil water content measuring device according to claim 6, characterized in that: A sealing groove is provided between the large diameter section and the medium diameter section, and a second sealing ring for sealingly cooperating with the inner side wall of the connecting pipe is provided in the sealing groove.

10. The split type crude oil water content measuring device according to claim 1 or 2, characterized in that: The part of the probe extending into the measuring tube is threadedly connected to the measuring tube.

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