A guided wave radar rod replacement device

Abstract

The present invention discloses a device for replacing a guided wave radar pole, comprising: a locking assembly, the locking assembly comprising a locking seat, a first locking clamp and a second locking clamp, the first locking clamp and the second locking clamp respectively having plate slots arranged relative to each other so as to be respectively clamped on both sides of the flange of the guided wave radar pole, the first locking clamp and the second locking clamp both being mounted on the locking seat and at least one of which can be movable and adjusted relative to the locking seat along the direction of the plate slot; and a lifting assembly for driving the locking assembly to rise and fall. A locking assembly having a plate slot is used so that the flange can be clamped and supported by the plate slot, thereby facilitating the fixing and support of the guided wave radar pole. During the entire process, the guided wave radar pole can be smoothly removed without the staff having to directly touch the guided wave radar pole, which can effectively avoid waiting for the guided wave radar pole to cool down before removal, thereby greatly improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the field of guided wave radar level gauge maintenance, and more particularly to a guided wave radar rod replacement device. Background Art

[0002] Guided wave radar level gauges are a type of liquid level measurement instrument used in the chemical industry. Based on the principle of time domain reflectometry (TDR), a radar level gauge uses electromagnetic pulses that travel at the speed of light along a steel cable or probe. When they encounter the surface of the measured medium, a portion of the radar pulse is reflected, forming an echo that returns along the same path to the pulse transmitter. The distance between the transmitter and the surface of the measured medium is proportional to the propagation time of the pulse, which is used to calculate the liquid level. The technical advantages of guided wave radar level gauges include continuous level measurement of liquids, particles, and slurries. Measurements are unaffected by changes in the medium, temperature, inert gases and steam, dust, and foam. The radar level gauge has an accuracy of 5 mm, a range of 60 meters, and is resistant to temperatures of 250°C and high pressures of 40 kg. It is suitable for use in explosion-hazardous areas. Guided wave radar level gauges are used in water storage tanks, acid and alkali storage tanks, slurry storage tanks, solid particle storage tanks, and small oil storage tanks. Various conductive, non-conductive, and corrosive media. Therefore, thermal power plants often use guided wave radar rods as liquid level monitoring equipment for high and low pressure heaters. During power generation, changes in heater water quality and inaccurate mixing ratios of chemical water treatment agents can cause flocs to adhere to the guided wave radar level gauge's waveguide probe, affecting the accuracy of liquid level measurement and necessitating timely replacement and cleaning of the waveguide probe. Currently, manual maintenance and replacement are still performed. Isolate the pipes leading to the measuring cylinder on the steam and water sides of the high and low pressure heaters. Open the drain door of the measuring cylinder to drain the high-temperature steam and liquid from the measuring cylinder. Loosen the fixing screws between the waveguide probe flange and the measuring cylinder. Wait for the probe temperature to drop to normal ambient temperature before removing, cleaning, and replacing the probe. To reinstall the probe, follow the reverse order.

[0003] The manual method has the following main disadvantages:

[0004] (1) During the replacement of the waveguide rod, there is a risk to the personal safety of the workers due to the manual replacement of the high-temperature and high-pressure gas in the high- and low-pressure heaters.

[0005] (2) The operating temperature of the high and low pressure heaters is between 200 and 300°C. It takes a long time for the temperature of the waveguide rod to naturally cool down to the ambient temperature in the measuring tube, which affects the efficiency of equipment maintenance.

[0006] (3) The length of the waveguide rod is 1.5m and the measuring tube is 1.6m. Manual removal requires the establishment of a scaffold. In addition, the waveguide rod is heavy and requires the cooperation of multiple people to pull it out of the measuring tube, which consumes manpower and physical resources.

[0007] In summary, how to effectively solve the problem of inconvenient removal of the current guided wave radar rod is an urgent problem that those skilled in the art need to solve. Summary of the Invention

[0008] In view of this, an object of the present invention is to provide a guided wave radar pole replacement device, which can effectively solve the problem of inconvenient removal of the current guided wave radar pole.

[0009] In order to achieve the above object, the present invention provides the following technical solutions:

[0010] A guided wave radar rod replacement device, comprising:

[0011] A locking assembly comprising a locking seat, a first locking pliers, and a second locking pliers, wherein the first locking pliers and the second locking pliers respectively have plate slots arranged opposite to each other so as to be respectively engaged with the flange of the guided wave radar rod, and the first locking pliers and the second locking pliers are both mounted on the locking seat and at least one of the locking pliers can be movably adjusted relative to the locking seat along the direction of the plate slot;

[0012] The lifting assembly is used to drive the locking assembly to move up and down.

[0013] In this guided wave radar pole replacement device, when in use, it is first moved near the guided wave radar pole. This allows the first and second locking clamps to separate, that is, their plate slots to move apart. The guided wave radar pole is then positioned between the two. The lifting assembly is then adjusted to bring the plate slots to the same height as the rod flange. The movable locking clamp is then adjusted so that the plate slots of the first and second locking clamps engage on either side of the rod flange. The bolts connecting the rod flange to the measuring tube flange are then loosened. The lifting assembly then drives the locking assembly upward, thereby raising the rod until it is completely free of the measuring tube. The guided wave radar pole replacement device is then driven to translate, moving the rod away from its current position, completing disassembly and assembly. This guided wave radar pole replacement device utilizes a locking assembly with a plate slot, allowing the plate slots to clamp and support the flange, thereby facilitating securement and support of the rod. During the entire process, the guided wave radar rod can be removed smoothly without the worker having to directly touch the rod, effectively avoiding the need to wait for the rod to cool down before removal, greatly improving work efficiency. In summary, the guided wave radar rod replacement device can effectively solve the problem of inconvenient guided wave radar rod removal.

[0014] Preferably, the first locking pliers and the second locking pliers are plug-fitted along the direction of the plate slot.

[0015] Preferably, the first locking pliers and the second locking pliers both have square plate slots and one of the plate slots is plugged into and matched with the outer side of the other; the first locking pliers and the second locking pliers are both provided with a U-shaped groove for clamping the guided wave radar rod column.

[0016] Preferably, the first locking pliers is fixedly mounted on the locking seat, and the second locking pliers is slidably connected to the locking seat via a slide rail structure and can be locked therebetween via a first locking member.

[0017] Preferably, the slide rail structure includes a slide groove member and a slider, and the first locking member is a locking screw; the locking screw is threadedly connected to the slider so as to be able to abut against the slide groove member.

[0018] Preferably, the locking seat is a plate; and a avoidance cavity extending to the edge is provided at a position on the locking seat corresponding to the plate slot of the first locking pliers.

[0019] Preferably, the lifting end of the lifting assembly is slidably connected to the locking seat in a horizontal direction and is locked by a second locking member.

[0020] Preferably, one of the lifting end of the lifting assembly and the locking seat is provided with a dovetail groove, and the other is provided with a dovetail sliding protrusion, and the extending direction of the dovetail groove is perpendicular to the extending direction of the sliding groove of the sliding groove member.

[0021] Preferably, the base of the lifting assembly is provided with running wheels.

[0022] Preferably, the lifting assembly is a telescopic frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of the guided wave radar pole replacement device provided by an embodiment of the present invention when in operation;

[0025] Figure 2 A schematic structural diagram of a lifting assembly provided in an embodiment of the present invention;

[0026] Figure 3 A schematic structural diagram of a locking pliers provided in an embodiment of the present invention;

[0027] Figure 4A schematic structural diagram of a sliding structure provided by an embodiment of the present invention;

[0028] Figure 5 A schematic structural diagram of a lifting end provided in an embodiment of the present invention.

[0029] The following are marked in the accompanying drawings:

[0030] First locking clamp 1, second locking clamp 2, locking seat 3, plate slot 4, U-shaped slot 5, flange 6, measuring tube 7, radar waveguide rod 8, sampling pipeline 9, slide groove part 10, slider 11, first locking part 12, column 13, second locking part 14, dovetail sliding protrusion 15, dovetail slot 16, telescopic frame 17, lifting end 18, walking wheel 19, avoidance chamber 20, telescopic hydraulic cylinder 21. DETAILED DESCRIPTION

[0031] An embodiment of the present invention discloses a guided wave radar pole replacement device, which can effectively solve the problem of inconvenient removal of the current guided wave radar pole.

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0033] See also Figure 1-Figure 5 , Figure 1 A schematic diagram of the structure of the guided wave radar pole replacement device provided by an embodiment of the present invention when in operation; Figure 2 A schematic structural diagram of a lifting assembly provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a locking pliers provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a sliding structure provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of a lifting end provided in an embodiment of the present invention.

[0034] In a specific embodiment, a guided wave radar rod replacement device is provided, primarily comprising a locking assembly and a lifting assembly. The guided wave radar rod 8, also known as a rod-type guided wave radar level gauge, is inserted into a measuring tube 7 during use. The rod 8 has a flange 6 on its upper portion. After insertion into the measuring tube 7, the flange 6 on the rod 8 is secured to the flange structure of the measuring tube 7 via bolts. A steam-side sampling line 9 and a water-side sampling line 9 extend from one side of the measuring tube 7. These lines are arranged one above the other.

[0035] The locking assembly is mainly used to clamp and fix the guided wave radar rod 8. Specifically, the locking assembly includes a locking seat 3, a first locking clamp 1 and a second locking clamp 2, wherein the first locking clamp 1 and the second locking clamp 2 cooperate with each other. Specifically, the first locking clamp 1 and the second locking clamp 2 respectively have plate slots 4 that are relatively arranged to be respectively clamped on both sides of the flange 6 of the guided wave radar rod 8. The plate slot 4 of the first locking clamp 1 and the plate slot 4 of the second locking clamp 2 are relatively arranged, and when in use, the plate slot 4 of the first locking clamp 1 is clamped on one side edge of the flange 6 of the guided wave radar rod 8, and the plate slot 4 of the second locking clamp 2 is clamped on the other side edge of the flange 6 of the guided wave radar rod 8, thereby fixing the guided wave radar rod 8, so that the guided wave radar rod 8 can be driven to rise and fall, and the position can be kept stable during the lifting process. It should be noted that the plate slot 4 refers to a slot body that can clamp the plate, and it is based on being able to clamp on the flange 6 of the guided wave radar rod 8. Therefore, the slot width of the plate slot 4 should not be less than the thickness of the flange 6 of the guided wave radar rod 8. Generally, they are set to be equal in size, or the former can be slightly larger than the latter.

[0036] The first locking clamp 1 and the second locking clamp 2 are both installed on the locking seat 3 and at least one of them can be movably adjusted relative to the locking seat 3 along the direction of the plate slot 4, so that the relative distance between the first locking clamp 1 and the second locking clamp 2 can be adjusted on the locking seat 3, and the relative distance between the plate slot 4 of the first locking clamp 1 and the plate slot 4 of the second locking clamp 2 can be adjusted to each other, so that when the plate slot 4 of the first locking clamp 1 and the plate slot 4 of the second locking clamp 2 are away from each other, the flange 6 of the guided wave radar rod 8 can enter between the two slots from the gap between the two, and then when the plate slot 4 of the first locking clamp 1 and the plate slot 4 of the second locking clamp 2 are close to each other, they are respectively clamped on the edge portions of the flange 6 of the guided wave radar rod 8, thereby making the first locking clamp 1 and the second locking clamp 2 cooperate to clamp the flange 6 of the guided wave radar rod 8.

[0037] The lifting assembly is used to drive the locking assembly to rise and fall. After the locking assembly clamps the flange 6 of the guided wave radar rod 8, the locking assembly can be driven to rise, thereby driving the guided wave radar rod 8 to rise; or the locking assembly can be driven to descend, thereby driving the guided wave radar rod 8 to descend. The lifting assembly can be an assembly including a telescopic hydraulic cylinder 21 or an assembly including other equipment, whichever is capable of completing the lifting drive.

[0038] When using this guided wave radar pole replacement device, it is first moved near the guided wave radar pole 8. This allows the first and second locking clamps 1 and 2 to separate, that is, their plate retaining slots 5 to move apart. The guided wave radar pole 8 is then positioned between them. The lifting assembly is then raised and lowered to align the plate retaining slots 4 with the flange 6 of the guided wave radar pole 8. The active locking clamp 1 or 2 is then adjusted so that the plate retaining slots 4 of the first and second locking clamps 1 and 2 respectively engage on either side of the flange 6 of the guided wave radar pole 8. The bolts connecting the flange of the guided wave radar pole 8 to the flange structure of the measuring tube 7 are then loosened. The lifting assembly then drives the locking assembly upward, thereby raising the guided wave radar pole 8 until the guided wave radar pole 8 is completely free of the measuring tube 7. The guided wave radar pole replacement device is then driven to translate, moving the guided wave radar pole 8 away from its current position, completing the installation and removal process. This guided wave radar pole replacement device utilizes a locking assembly with a plate retaining slot 4, which allows the flange 6 to be clamped and supported via the plate retaining slot 4, thereby conveniently securing and supporting the guided wave radar pole 8. During the entire process, the guided wave radar pole 8 can be smoothly removed without the operator having to directly touch it. This effectively avoids waiting for the guided wave radar pole 8 to cool before removal, significantly improving work efficiency. In summary, this guided wave radar pole replacement device effectively solves the current problem of inconvenient guided wave radar pole 8 removal.

[0039] Furthermore, in order to better support the guided wave radar pole 8, it is preferred here that the first locking clamp 1 and the second locking clamp 2 are plugged into and matched along the notch direction of the plate slot 4, so that when the plate slot 4 of the first locking clamp 1 and the plate slot 4 of the second locking clamp 2 are respectively stuck on both sides of the flange 6 of the guided wave radar pole 8, the first locking clamp 1 and the second locking clamp 2 are in a mutually plugged state, so that they can constrain each other in the supporting direction, so as to provide a better supporting effect on the guided wave radar pole 8.

[0040] It should be noted that, regarding how to achieve plug-in fit, the first locking pliers 1 and the second locking pliers 2 can be plug-in fit through pins and sockets. In this case, the pins and sockets can be set away from the plate slot 4. For example, the upper and lower sides and / or the left and right sides of the plate slot 4 can be plug-in fit through pins and sockets. For example, in the first locking pliers 1 and the second locking pliers 2, one is provided with a pin and the other is provided with a socket. It should be noted that when the notch of the plate slot 4 of the first locking pliers 1 and the notch of the plate slot 4 of the second locking pliers 1 can be kept away from each other, the pins and sockets do not interfere with the flange 6 of the guided wave radar rod 8 entering between the first locking pliers 1 and the second locking pliers 2, and a sufficiently large gap can be formed between the pins and the sockets. Alternatively, the pins and sockets can be distributed on the other side, that is, the side where the non-guided wave radar rod 8 enters.

[0041] In order to facilitate the arrangement of the first locking pliers 1 and the second locking pliers 2, as shown in FIG. Figure 3 As shown, it is preferred that both the first locking pliers 1 and the second locking pliers 2 have square plate slots 4, and one of the plate slots 4 is plugged into and matched with the outer side of the other. For example, the end of the first locking pliers 1 facing the second locking pliers 2 can be inserted into the plate slot of the second locking pliers 2, and the dimensions of the two are matched, that is, the cross-sections in the plugging direction are both rectangular and equal in size. It should be noted that the wall thickness of the first locking pliers 1 should not be too large, otherwise the plate slot 4 of the first locking pliers 1 is too small compared to the plate slot 4 of the second locking pliers 2, so that the plate slot 4 of the second locking pliers 2 does not have a good effect of engaging the flange 6 edge of the guided wave radar rod 8; of course, the end of the second locking pliers 2 facing the first locking pliers 1 can also be inserted into the plate slot 4 of the first locking pliers 1, and the dimensions of the two are matched.

[0042] Furthermore, in order to better achieve the plug-in connection of the first locking pliers 1 and the second locking pliers 2, it is preferred that the first locking pliers 1 and the second locking pliers 2 are both provided with a U-shaped groove 5 for clamping the column of the guided wave radar rod 8, wherein the U-shaped groove 5 is arranged in the extension direction of the guided wave radar rod 8, and the bottom and wall of the U-shaped groove 5 have a plate slot 4 portion. Specifically, for the first locking pliers 1 and the second locking pliers 2, a square body can be adopted, such as a directional box, with one side in the horizontal direction open so that the box cavity forms a groove cavity of the plate slot 4, and the open opening on this side is the notch of the plate slot 4, and on the open side, U-shaped grooves 5 are provided on both sides of the plate slot 4, and the two U-shaped grooves 5 are arranged overlapping, that is, aligned, and the notch direction of the U-shaped groove 5 is consistent with the notch direction of the plate slot 4.

[0043] As described above, the first locking pliers 1 and the second locking pliers 2 are both mounted on the locking seat 3. Specifically, it is preferred that the first locking pliers 1 is fixedly mounted on the locking seat 3, and the second locking pliers 2 is slidably connected to the locking seat 3 via a slide rail structure and can be locked by the first locking member 12. Of course, the first locking pliers 1 can also be slidably connected to the locking seat 3 via a slide rail structure. When the first locking pliers 1 cannot be adjusted, when in use, it is generally necessary to move the guided wave radar pole replacement device as a whole so that one side edge of the flange 6 of the guided wave radar pole 8 is first inserted into the plate slot 4, and then the second locking pliers 2 is adjusted and moved toward the first locking pliers 1 until the plate slot 4 of the second locking pliers 2 is clamped on the other side edge of the flange 6.

[0044] Specifically, the slide rail structure may include a slide member 10 and a slider 11, wherein the first locking member 12 is preferably a locking screw, wherein the locking screw is threadedly connected to the slider 11 so as to abut against the slide member 10. To facilitate sliding, the slider 11 may be provided with a roller so that the roller moves in the slide of the slide member 10, thereby achieving smooth sliding of the slider 11. Specifically, the second locking pliers 2 may be connected to the lower side of two columns 13, the two columns 13 being arranged side by side, and the lower ends of the two columns 13 are each provided with a slider 11 so as to be slidably connected to the two parallel slide members 10, wherein the head of the locking screw is upward and exposed, and is provided with a hand-tightening handle so that locking can be achieved by manually tightening the locking screw. The first locking pliers 1 may also be connected to the locking seat 3 via the two columns 13, wherein the slide member 10 is fixed to the locking seat 3.

[0045] The locking seat 3 is preferably a plate, but can also be a frame. A clearance cavity 20 extending to the edge is provided on the plate locking seat 3 at a position corresponding to the plate retaining slot 4 of the first locking pliers 1. Specifically, the clearance cavity 20 is preferably a U-shaped clearance groove, so that when the locking seat 3 is raised, the measuring cylinder 7 and the sampling pipeline 9 connected thereto can be raised and lowered relative to the locking seat 3.

[0046] The lifting end of the lifting assembly is preferably connected to the locking seat 3 in a horizontal sliding direction and is locked by the second locking member 14, so that the locking position can be easily adjusted. Specifically, one of the lifting end 18 of the lifting assembly and the locking seat 3 can be provided with a dovetail groove 16, and the other can be provided with a dovetail sliding protrusion 15. For example, the dovetail groove 16 can be provided on the lower side of the locking seat 3, and the lifting end 18 of the lifting assembly can be a plate with a dovetail sliding protrusion 15 formed on its upper side. The second locking member 14 can be a locking screw, and the locking seat 3 is provided with a threaded hole extending vertically through the dovetail groove 16 to threadably engage with the second locking member 14. The tail of the second locking member 14 can abut against the dovetail sliding protrusion 15 to prevent the dovetail sliding protrusion 15 from sliding relative to the dovetail groove 16.

[0047] To facilitate adjustment of the position of the first and second locking clamps 1 and 2 relative to the guided wave radar rod 8, the dovetail groove 16 is preferably arranged perpendicular to the direction of extension of the slideway member 10. Furthermore, to facilitate adjustment, the base of the lifting assembly is preferably provided with running wheels 19, which may be four running wheels 19 distributed at the four corners of a rectangle. Accordingly, the lifting assembly is preferably a telescopic frame 17, which includes a telescopic hydraulic cylinder 20 to drive the connecting rod portion of the telescopic frame 17 to rotate, thereby achieving overall lifting and lowering adjustment.

[0048] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0049] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guided wave radar rod replacement device, characterized in that: include: A locking assembly comprising a locking seat, a first locking pliers, and a second locking pliers, wherein the first locking pliers and the second locking pliers respectively have plate slots arranged opposite to each other so as to be respectively engaged with the flange of the guided wave radar rod, and the first locking pliers and the second locking pliers are both mounted on the locking seat and at least one of the locking pliers can be movably adjusted relative to the locking seat along the direction of the plate slot; 18. The camshaft assembly of claim 17, wherein the locking pliers is configured to engage with the first and second locking pliers to engage with each other and to engage with each other to engage with each other. The camshaft assembly comprises a plurality of locking pliers, each of which is configured to engage with the second and second locking pliers to engage with each other. The plurality of locking pliers are configured to engage with each other to engage with each other to engage with each other 2. The guided wave radar pole replacement device according to claim 1, characterized in that: The first locking pliers is fixedly mounted on the locking seat, and the second locking pliers is slidably connected to the locking seat via a slide rail structure and can be locked therebetween via a first locking member.

3. The guided wave radar pole replacement device according to claim 2, characterized in that: The slide rail structure includes a slide groove member and a slider, and the first locking member is a locking screw; the locking screw is threadedly connected to the slider so as to be able to abut against the slide groove member.

4. The guided wave radar pole replacement device according to claim 3, characterized in that: The locking seat is a plate; a position on the locking seat corresponding to the plate slot of the first locking pliers is provided with an avoidance cavity extending to the edge.

5. The guided wave radar pole replacement device according to claim 4, characterized in that: The lifting end of the lifting assembly is slidably connected to the locking seat in a horizontal direction and is locked by a second locking member.

6. The guided wave radar pole replacement device according to claim 5, characterized in that: One of the lifting end of the lifting assembly and the locking seat is provided with a dovetail groove, and the other is provided with a dovetail sliding protrusion. The extending direction of the dovetail groove is perpendicular to the extending direction of the sliding groove of the sliding groove member.

7. The guided wave radar pole replacement device according to claim 6, characterized in that: The base of the lifting assembly is provided with walking wheels.

8. The guided wave radar pole replacement device according to claim 7, characterized in that: The lifting component is a telescopic frame.

Images