Resistance probe detection device for corrosion resistance of liquid storage tank

Abstract

The utility model discloses a resistance probe detection device for corrosion resistance of a liquid storage tank, which relates to the technical field of detection devices and comprises a cylindrical fixing seat, a flange plate is welded at the bottom end of the cylindrical fixing seat, a resistance probe head is vertically and fixedly connected at the bottom end of a probe rod, and the resistance probe head is fixedly connected with a probe rod. A protection assembly capable of protecting the probe from being blocked is arranged at the bottom end of the outer portion of the probe rod. According to the resistance probe detection device for the corrosion resistance of the liquid storage tank, through the arrangement of the liquid inlet pipe, the electromagnetic valve, the liquid conveying pipe, the protection cover and the material passing hole, when the resistance probe detection device is used, a high-pressure pump is connected into the liquid inlet pipe, meanwhile, the electromagnetic valve is opened, liquid identical to materials is pumped into the protection cover through the liquid conveying pipe, and along with the increase of pressure in the liquid conveying pipe and the protection cover, the material passing hole is opened; and the pumped liquid overflows from the material passing hole to push out blockages, so that the function of quickly passing through the hole to prevent blockage is realized, and the problem that the device does not have the function of quickly passing through the hole to prevent blockage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a resistance probe detection device for the corrosion resistance of a liquid storage tank. Background Art

[0002] Many corrosion problems in industrial production are caused by multiphase material flow, which is particularly common in liquefied storage processes. Gaseous and liquid materials coexist, and the materials are under high pressure. During transportation and storage, containers and pipelines are easily corroded. In liquefied storage containers and pipelines, resistance probe detection devices are usually installed to facilitate the detection and monitoring of the corrosion resistance of pipelines and containers.

[0003] The resistance probe detection devices currently used to detect the corrosion resistance of liquefied storage tanks are mostly similar in structure, with probe rods, probes, and collectors as the main detection components. The probe rods are fixed to the tank or the tank-related pipes through flanges. There are some functional deficiencies in actual use and there is room for improvement. For example, the resistance probe detection device belongs to the invasive detection type. The probe is placed in the material solution. A set of protective covers are generally installed on the outside of the probe to prevent the flow of high-pressure materials from directly flushing the probe and causing the probe to bend and break. There are holes on the outside of the protective cover to facilitate the passage of materials. When monitoring oil and gas materials, the long-term passage of oil can easily form oil accumulation in the material through-holes, clogging the holes and affecting the normal detection of the probe. When cleaning, the detection device can only be removed as a whole. There is a lot of preliminary preparation work, including depressurization and sealing of the storage tank, which is relatively troublesome and does not have the function of quick through-hole to prevent blockage.

[0004] Now, a new type of resistance probe detection device for the corrosion resistance of liquid storage tanks is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a resistance probe detection device for the corrosion resistance of liquid storage tanks, so as to solve the problem of the lack of a quick eyelet and anti-blocking function proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a resistance probe detection device for the corrosion resistance of a liquid storage tank, comprising a cylindrical fixing seat, a flange welded to the bottom end of the cylindrical fixing seat, a probe rod vertically installed inside the cylindrical fixing seat, the top end of the probe rod is fixedly connected to a data collector, the bottom end of the probe rod is vertically fixedly connected to a resistance probe head, and the bottom end of the outside of the probe rod is provided with a protective component that can protect the probe from blockage.

[0007] The protective assembly includes a protective cover, which is sleeved on the bottom end of the outside of the probe rod. Multiple groups of material passing holes are provided on the outside of the protective cover. An infusion tube is inserted into the left side of the protective cover. The top of the infusion tube is fixedly connected to a solenoid valve, and the top of the solenoid valve is fixedly connected to a liquid inlet pipe.

[0008] Preferably, the interiors of the liquid inlet pipe, the solenoid valve, the liquid infusion pipe, and the protective cover are interconnected, and the liquid infusion pipe and the flange are fixedly connected.

[0009] Preferably, the inner diameters of the liquid inlet pipe and the liquid delivery pipe are the same, and the bottom end of the solenoid valve is higher than the top end of the flange.

[0010] Preferably, the thread at the top end of the inner part of the protective cover matches the thread at the bottom end of the outer part of the probe rod, and the material passes through the inner and outer surfaces of the protective cover through the hole.

[0011] Preferably, probe passage grooves are respectively provided inside both sides of the bottom end of the flange, internal thread fixing seats are respectively welded on both sides of the top end of the flange, a pressure sensor is vertically plugged into the internal thread fixing seat, an external hexagonal fixing ring is fixedly connected to the top end of the outside of the pressure sensor, and a sensor probe is provided at the bottom end of the pressure sensor.

[0012] Preferably, the internal thread fixing seat is symmetrically distributed about the vertical center line of the flange, and the external thread of the pressure sensor and the internal thread of the internal thread fixing seat are consistent.

[0013] Preferably, a bobbin fixing plate is welded to the right side of the cylindrical fixing seat, a stainless steel cylinder is fixedly connected to the right side of the bottom of the bobbin fixing plate, wind shield plates are glued to the front and rear ends of the stainless steel cylinder, air inlet grooves are respectively provided inside the front and rear ends of the stainless steel cylinder, a negative pressure fan is installed at the bottom of the stainless steel cylinder, and a gas sensor is fixedly connected to the top of the bobbin fixing plate.

[0014] Preferably, the interiors of the stainless steel cylinder, the air inlet groove, and the negative pressure fan are connected, and the bottom end of the wind shield is higher than the bottom end of the air inlet groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the resistance probe detection device for the corrosion resistance of liquid storage tanks not only realizes the function of rapid eyelet opening to prevent blockage, but also realizes the function of flange tightness monitoring and material leakage monitoring;

[0016] (1) The device is provided with a liquid inlet pipe, a solenoid valve, a liquid infusion pipe, a protective cover and a material through-hole. When in use, the flange is connected to the storage tank or the supporting pipe of the storage tank, and the resistance probe head is in direct contact with the material. After the metal wire of the resistance probe head as a measuring element is corroded, the length of the metal wire remains unchanged, the diameter decreases, and the resistance increases. The corrosion thinning amount of the metal wire is converted by testing the change in resistance. When the material of the metal wire of the resistance probe head is the same as the material of the measured equipment, the corrosion rate of the metal wire can be used to approximately represent the corrosion rate of the equipment. The protective cover can protect the resistance probe head and prevent the resistance probe head from bending and breaking due to the erosion of high-pressure materials. The material through-hole reserves space for the passage of liquid materials. When it is necessary to clean the blockage inside the material through-hole, the high-pressure pump is connected to the liquid inlet pipe and the solenoid valve is opened at the same time. The liquid same as the material is pumped into the protective cover through the liquid infusion pipe. As the pressure in the liquid infusion pipe and the protective cover increases, the pumped liquid overflows from the material through-hole and pushes out the blockage, thereby realizing the function of rapid eye opening and anti-blockage.

[0017] (2) By providing an internal thread fixing seat, a pressure sensor, an external hexagonal fixing ring, a sensor probe and a probe through-slot, when in use, the flange and the storage tank or the supporting pipeline of the storage tank are docked and fixed by bolts. As the flange is firmly fixed, the pressure fed back by the sensor probe is constant. As the flange gradually loosens, the pressure value fed back by the sensor probe to the pressure sensor will decrease. The background monitoring personnel can intuitively understand the firmness and sealing of the flange through the pressure value. The internal thread fixing seat provides physical support for the installation and fixation of the pressure sensor. The pressure sensor can be rotated through the external hexagonal fixing ring, which is convenient for disassembly and assembly, thereby realizing the function of flange tightness monitoring;

[0018] (3) The stainless steel cylinder, the cylinder fixing plate, the wind shield, the air inlet groove, the negative pressure fan and the gas sensor are provided. When in use, the negative pressure fan is started regularly. The negative pressure fan discharges the air inside the stainless steel cylinder and blows the air on the surface of the flange downward to accelerate its flow. The external air enters the stainless steel cylinder along the opening at the bottom of the wind shield and the air inlet groove. The gas sensor monitors the intake air and monitors the content of gas molecules related to the liquefied storage materials. When a leak occurs, the content of the related gas will increase significantly. The background monitoring personnel can detect it in time, thus realizing the function of material leakage monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural diagram of the utility model;

[0020] Figure 2 This is a front view enlarged structural diagram of the probe rod and protective cover of the utility model in a separated state;

[0021] Figure 3 For the utility model Figure 1A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0022] Figure 4 This is a bottom view of the flange structure of the present invention;

[0023] Figure 5 This is an enlarged side sectional structural diagram of the stainless steel cylinder of the present invention.

[0024] In the figure: 1. Cylindrical fixing seat; 2. Probe rod; 3. Data collector; 4. Liquid inlet pipe; 5. Solenoid valve; 6. Infusion tube; 7. Protective cover; 8. Material through eye; 9. Resistance probe head; 10. Flange; 11. Internal thread fixing seat; 12. Pressure sensor; 13. External hexagonal fixing ring; 14. Sensor probe; 15. Probe through slot; 16. Stainless steel cylinder; 17. Cylindrical fixing plate; 18. Wind shield; 19. Air inlet slot; 20. Negative pressure fan; 21. Gas sensor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1: Please refer to Figure 1-5 A resistance probe detection device for the corrosion resistance of a liquid storage tank comprises a cylindrical fixing seat 1, a flange 10 welded to the bottom end of the cylindrical fixing seat 1, a probe rod 2 vertically mounted inside the cylindrical fixing seat 1, a data collector 3 fixedly connected to the top end of the probe rod 2, a resistance probe head 9 fixedly connected to the bottom end of the probe rod 2, and a protective component that can protect the probe from clogging is provided at the bottom end of the probe rod 2;

[0027] See also Figure 1-5 A resistance probe detection device for the corrosion resistance of a liquid storage tank further includes a protective assembly, which includes a protective cover 7, which is sleeved on the bottom end of the probe rod 2, and has multiple material passage holes 8 on the outside of the protective cover 7. A liquid infusion tube 6 is inserted on the left side of the protective cover 7, and a solenoid valve 5 is fixedly connected to the top of the liquid infusion tube 6. The top of the solenoid valve 5 is fixedly connected to the liquid inlet pipe 4;

[0028] The interiors of the liquid inlet pipe 4, the solenoid valve 5, the infusion pipe 6, and the protective cover 7 are connected. The infusion pipe 6 and the flange 10 are fixedly connected. The inner diameters of the liquid inlet pipe 4 and the infusion pipe 6 are the same. The bottom end of the solenoid valve 5 is higher than the top end of the flange 10. The thread at the top end of the inner side of the protective cover 7 matches the thread at the bottom end of the outer side of the probe rod 2. The material passes through the inner and outer surfaces of the protective cover 7 through the eye 8, which protects the probe while allowing for quick cleanup of blockages.

[0029] Specifically, if Figure 1 and Figure 2 As shown, the protective cover 7 can protect the resistance probe head 9 and prevent the resistance probe head 9 from bending and breaking due to the erosion of high-pressure materials. The material through-hole 8 reserves space for the passage of liquid materials. When it is necessary to clean the blockage inside the material through-hole 8, the high-pressure pump is connected to the liquid inlet pipe 4, and the solenoid valve 5 is opened at the same time. The liquid same as the material is pumped into the protective cover 7 through the infusion pipe 6. As the pressure in the infusion pipe 6 and the protective cover 7 increases, the pumped liquid overflows from the material through-hole 8 and pushes out the blockage.

[0030] Example 2: Probe passage slots 15 are provided on both sides of the bottom end of the flange 10, and internal thread fixing seats 11 are welded on both sides of the top end of the flange 10. A pressure sensor 12 is vertically inserted into the internal thread fixing seat 11, and an external hexagonal fixing ring 13 is fixedly connected to the top end of the external pressure sensor 12. A sensor probe 14 is provided at the bottom end of the pressure sensor 12. The internal thread fixing seat 11 is symmetrically distributed about the vertical center line of the flange 10. The external thread of the pressure sensor 12 and the internal thread of the internal thread fixing seat 11 match each other, which can provide timely feedback when the flange is loose, thereby avoiding deterioration of the sealing performance of the connection position.

[0031] Specifically, if Figure 3 and Figure 4 As shown, the pressure fed back by the sensor probe 14 is constant. As the flange 10 gradually loosens, the pressure value fed back to the pressure sensor 12 by the sensor probe 14 will decrease. The background monitoring personnel can intuitively understand the firmness and sealing of the flange 10 through the pressure value. The internal threaded fixing seat 11 provides physical support for the installation and fixation of the pressure sensor 12. The pressure sensor 12 can be rotated through the external hexagonal fixing ring 13, which is convenient for disassembly and assembly.

[0032] Example 3: A bobbin fixing plate 17 is welded to the right side of the cylindrical fixing seat 1, and a stainless steel cylinder 16 is fixedly connected to the right side of the bottom of the bobbin fixing plate 17. Wind shields 18 are glued to the front and rear ends of the stainless steel cylinder 16, and air inlet grooves 19 are respectively provided inside the front and rear ends of the stainless steel cylinder 16. A negative pressure fan 20 is installed at the bottom of the stainless steel cylinder 16, and a gas sensor 21 is fixedly connected to the top of the bobbin fixing plate 17. The interiors of the stainless steel cylinder 16, the air inlet groove 19, and the negative pressure fan 20 are connected. The bottom end of the wind shield 18 is higher than the bottom end of the air inlet groove 19, so that leakage can be discovered in time;

[0033] Specifically, if Figure 1 and Figure 5 As shown, the negative pressure fan 20 discharges the air inside the stainless steel cylinder 16 and blows the air on the surface of the flange 10 downward to accelerate its flow. The external air enters the stainless steel cylinder 16 along the opening at the bottom of the windshield 18 and the air inlet groove 19. The gas sensor 21 monitors the intake air and monitors the content of gas molecules related to the liquefied storage materials. When a leak occurs, the content of the related gas will increase significantly, and the background monitoring personnel can detect it in time.

[0034] Working principle: When the present invention is in use, first, the flange 10 is connected to the storage tank or the supporting pipeline of the storage tank, and the resistance probe head 9 is in direct contact with the material. After the metal wire of the resistance probe head 9 serving as the measuring element is corroded, the length of the metal wire remains unchanged, the diameter decreases, and the resistance increases. The corrosion thinning amount of the metal wire is converted by testing the change in resistance. When the material of the metal wire of the resistance probe head 9 is the same as the material of the measured equipment, the corrosion rate of the metal wire can approximately represent the corrosion rate of the equipment. The protective cover 7 can protect the resistance probe head 9 to prevent the resistance probe head 9 from bending and breaking due to high-pressure material erosion. The material through-eye 8 reserves space for the passage of liquid material. When it is necessary to clean the blockage inside the material through-eye 8, the high-pressure pump is connected to the liquid inlet pipe 4, and the solenoid valve 5 is opened at the same time. The liquid same as the material is pumped into the protective cover 7 through the infusion pipe 6. As the pressure in the infusion pipe 6 and the protective cover 7 increases, the pumped liquid overflows from the material through-eye 8 and pushes out the blockage. Flange 10 is docked with the storage tank or its associated piping and secured with bolts. As flange 10 is securely fastened, the pressure reported by sensor probe 14 remains constant. As flange 10 gradually loosens, the pressure value fed back to pressure sensor 12 by sensor probe 14 decreases. This pressure value allows back-office monitoring personnel to intuitively assess the robustness and sealing performance of flange 10. Internally threaded mounting base 11 provides physical support for the installation of pressure sensor 12, while external hexagonal mounting ring 13 allows for rotation of pressure sensor 12, facilitating its assembly and disassembly. Negative pressure blower 20 is periodically activated to expel air from stainless steel cylinder 16 and blow downward on the surface of flange 10, accelerating its flow. External air then enters stainless steel cylinder 16 through the opening at the bottom of windshield 18 and air inlet slot 19. Gas sensor 21 monitors the incoming air, monitoring the content of gas molecules associated with the liquefied storage material. In the event of a leak, the gas content will increase significantly, enabling back-office monitoring personnel to detect it promptly.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A resistance probe detection device for the corrosion resistance of a liquid storage tank, comprising a cylindrical fixing seat (1), characterized in that: A flange (10) is welded to the bottom end of the cylindrical fixing seat (1), a probe rod (2) is vertically mounted inside the cylindrical fixing seat (1), a data collector (3) is fixedly connected to the top end of the probe rod (2), a resistance probe head (9) is vertically fixedly connected to the bottom end of the probe rod (2), and a protective component is provided at the bottom end of the outside of the probe rod (2) to protect the probe from clogging; The protective assembly includes a protective cover (7), which is sleeved on the bottom end of the outside of the probe rod (2), and a plurality of material passing holes (8) are provided on the outside of the protective cover (7). A liquid infusion tube (6) is inserted on the left side of the protective cover (7), and the top end of the liquid infusion tube (6) is fixedly connected to a solenoid valve (5), and the top end of the solenoid valve (5) is fixedly connected to a liquid inlet tube (4).

2. The device for detecting the corrosion resistance of a liquid storage tank using a resistance probe according to claim 1, characterized in that: The interiors of the liquid inlet pipe (4), the electromagnetic valve (5), the liquid delivery pipe (6), and the protective cover (7) are interconnected, and the liquid delivery pipe (6) and the flange (10) are fixedly connected.

3. The device for detecting the corrosion resistance of a liquid storage tank by using a resistance probe according to claim 1, characterized in that: The inner diameters of the liquid inlet pipe (4) and the liquid delivery pipe (6) are the same, and the bottom end of the solenoid valve (5) is higher than the top end of the flange (10).

4. The device for detecting the corrosion resistance of a liquid storage tank by using a resistance probe according to claim 1, characterized in that: The thread at the top end of the inner part of the protective cover (7) matches the thread at the bottom end of the outer part of the probe rod (2), and the material passes through the inner and outer surfaces of the protective cover (7) through the eye (8).

5. The device for detecting the corrosion resistance of a liquid storage tank by using a resistance probe according to claim 1, characterized in that: Probe passage slots (15) are respectively provided inside both sides of the bottom end of the flange (10), internal thread fixing seats (11) are respectively welded on both sides of the top end of the flange (10), a pressure sensor (12) is vertically inserted into the internal thread fixing seat (11), an external hexagonal fixing ring (13) is fixedly connected to the top end of the outside of the pressure sensor (12), and a sensor probe (14) is provided at the bottom end of the pressure sensor (12).

6. The device for detecting the corrosion resistance of a liquid storage tank by using a resistance probe according to claim 5, characterized in that: The internal thread fixing seat (11) is symmetrically distributed about the vertical center line of the flange (10), and the external thread of the pressure sensor (12) and the internal thread of the internal thread fixing seat (11) are consistent.

7. The device for detecting the corrosion resistance of a liquid storage tank by using a resistance probe according to claim 1, characterized in that: A bobbin fixing plate (17) is welded to the right side of the cylindrical fixing seat (1), a stainless steel cylinder (16) is fixedly connected to the right side of the bottom of the bobbin fixing plate (17), a wind shield (18) is glued to the front and rear ends of the stainless steel cylinder (16), an air inlet groove (19) is provided inside the front and rear ends of the stainless steel cylinder (16), a negative pressure fan (20) is installed at the bottom of the stainless steel cylinder (16), and a gas sensor (21) is fixedly connected to the top of the bobbin fixing plate (17).

8. The device for detecting the corrosion resistance of a liquid storage tank using a resistance probe according to claim 7, characterized in that: The interiors of the stainless steel cylinder (16), the air inlet groove (19), and the negative pressure fan (20) are connected, and the bottom end of the wind shield (18) is higher than the bottom end of the air inlet groove (19).

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