Material level measuring device

Abstract

The utility model relates to a material level measuring device which is connected with a pipe orifice of equipment to be detected, the material level measuring device comprises a measuring mechanism, a connecting part and communication equipment are arranged on the measuring mechanism, the connecting part is located on the lower portion of the measuring mechanism, the communication equipment protrudes out of the connecting part downwards, and the material level measuring device further comprises an isolating valve. An accommodating mechanism capable of accommodating the communication equipment is arranged at the upper end of the isolating valve, and the isolating valve is connected between the connecting part and the pipe orifice of the equipment to be detected. An isolating valve is connected between the material level measuring device and the pipe orifice of the to-be-detected equipment, and an accommodating mechanism for accommodating the communication equipment is arranged at the upper end of the isolating valve; the isolating valve is freely opened or closed without being interfered by communication equipment; when the measuring mechanism needs to be overhauled, the isolating valve can be closed to isolate communication between the measuring mechanism and the interior of the to-be-detected equipment, the measuring mechanism is directly disassembled, operations such as medium emptying and harmful gas replacement in the prior art are avoided, and disassembly is convenient, rapid and safe.

Description

Technical Field

[0001] This utility model relates to the field of non-contact level measurement, and in particular to a level measurement device. Background Technology

[0002] A radar level gauge is a non-contact liquid level measuring instrument. It emits electromagnetic waves through its antenna; these waves are reflected back from the liquid surface and received by a receiver. By calculating the time difference between the transmitted and echoed waves, the liquid level height is determined. Figure 2 As shown, the existing radar level gauge 1' is directly installed at the port 4' of the equipment 100'. Due to the presence of the antenna 3' protruding from the lower surface of the flange 2', an isolation valve cannot be directly installed at the port 4'. However, in some structural designs, a full-bore ball valve is installed between the radar level gauge and the port 4' of the equipment 100'. The antenna 3' of the radar level gauge 1' passes through the full-bore ball valve, so the full-bore ball valve cannot be closed to achieve the isolation function before the antenna 3' of the radar level gauge 1' is withdrawn.

[0003] When radar level gauges installed on pressure storage tanks need to be removed for maintenance, the pressure inside the tank must be reduced to atmospheric pressure before removal to avoid safety accidents. If the pressure storage tank contains volatile toxic media, the media must be emptied from the tank, and air replacement must be completed before the radar level gauge can be removed. Therefore, if existing radar level gauges installed on pressure storage tanks or tanks containing volatile toxic media need to be removed during production, it is not only time-consuming and labor-intensive but also disrupts production. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a level measuring device that is easy to disassemble and has high safety, in light of the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a level measuring device, connected to the pipe opening of the equipment to be tested, the level measuring device including a measuring mechanism, a connecting part and a communication device provided on the measuring mechanism, the connecting part being located at the lower part of the measuring mechanism, and the communication device protruding downward from the connecting part, characterized in that: it further includes an isolation valve, the upper end of the isolation valve being provided with a receiving mechanism for accommodating the communication device, the isolation valve being connected between the connecting part and the pipe opening of the equipment to be tested. The setting of the receiving mechanism avoids interference from the communication device when the isolation valve is opened and closed, so that when the equipment to be tested is under high pressure or the medium is volatile, the radar level gauge can be isolated from the equipment to be tested by closing the isolation valve, thereby allowing the radar level gauge to be relatively safely removed from the equipment to be tested.

[0006] Preferably, the receiving mechanism is a short pipe, the upper end of which is connected to the connecting part, and the lower end of which is connected to the isolation valve. The communication device is housed within the short pipe. The isolation valve is connected between the short pipe and the port of the device to be tested. The receiving mechanism on the isolation valve is a short pipe, which allows users to easily assemble a level measuring device that achieves the target function using existing simple structures. Of course, the isolation valve with the receiving mechanism can also be designed and manufactured as a single unit.

[0007] In order to enable the level measuring device to be used in situations where the equipment under test is under high pressure, a pressure relief valve is provided on the short pipe to reduce the internal pressure of the short pipe.

[0008] Preferably, the inner diameter of the short pipe is the same as the inner diameter of the pipe opening of the device to be tested; the inner diameter of the isolation valve is also the same as the inner diameter of the pipe opening of the device to be tested.

[0009] Preferably, the isolation valve is a full-bore ball valve.

[0010] Preferably, the connecting part is a first flange, the upper and lower ends of the short pipe are respectively provided with a second flange and a third flange, the upper and lower ends of the isolation valve are respectively provided with a fourth flange and a fifth flange, the pipe port of the device to be tested is provided with a sixth flange, and the connection between the measuring mechanism and the short pipe, the connection between the short pipe and the isolation valve, and the connection between the isolation valve and the pipe port of the device to be tested are all flange connections.

[0011] To prevent the communication equipment from interfering with the opening and closing of the isolation valve, the lower end of the communication equipment is positioned at a height greater than the lower end of the third flange. The entire communication equipment is housed within the short pipe, ensuring it does not affect the opening and closing of the isolation valve.

[0012] Preferably, the measuring mechanism is a radar level gauge, and the communication device is an antenna.

[0013] Preferably, the measuring mechanism is a tuning fork level switch, and the communication device is a tuning fork.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] (1) An isolation valve is connected between the level measuring device and the pipe port of the equipment to be tested. The upper end of the isolation valve is equipped with a accommodating mechanism for the communication equipment, so that the isolation valve can be opened or closed freely without interference from the communication equipment. When the radar level gauge needs to be repaired, the isolation valve can be closed to isolate the communication between the radar level gauge and the equipment to be tested. The radar level gauge can be disassembled, avoiding the operation of emptying the medium and replacing harmful gases in the prior art. Disassembly is convenient, quick and safe.

[0016] (2) The housing mechanism is also equipped with a pressure relief valve. When the equipment to be tested is under high pressure, after closing the isolation valve, open the pressure relief valve to release the pressure in the housing mechanism, and then the radar level gauge can be disassembled under normal pressure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the level measuring device in use according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the level measuring device in use in the background art of this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 The figure shown is a preferred embodiment of the level measuring device of this utility model. The level measuring device is connected to the pipe port 4 of the device to be tested 100. The level measuring device includes a measuring mechanism 1, a short pipe 2 and an isolation valve 3, which are connected in sequence from top to bottom.

[0021] The measuring mechanism 1 is provided with a main body 11, a connecting part 12 and a communication device 13. The connecting part 12 is located at the lower part of the main body 11, and the communication device 13 protrudes downward from the connecting part 12. In this embodiment, the connecting part 12 is a first flange.

[0022] The inner diameter of the short pipe 2 is the same as the inner diameter of the pipe opening 4 of the device to be tested 100. The part of the communication device 13 that protrudes downward from the connecting part 12 is housed in the short pipe 2. The upper and lower ends of the short pipe 2 are respectively provided with a second flange 22 and a third flange 23. The second flange 22 is connected to the first flange mentioned above. The short pipe 2 is also provided with a pressure relief valve 21 for reducing the internal pressure of the short pipe 2.

[0023] The isolation valve 3 is a full-bore ball valve, and its inner diameter is the same as that of the pipe port 4 of the device to be tested 100. The upper and lower ends of the full-bore ball valve are respectively provided with a fourth flange 31 and a fifth flange 32. The fourth flange 31 is connected to the third flange 23 on the aforementioned short pipe 2. In this embodiment, the short pipe 2 and the isolation valve 3 in the level measuring device are connected by flanges. In other embodiments, the short pipe 2 and the isolation valve 3 can also be designed as an integral structure.

[0024] In order to connect the level measuring device with the device under test 100, the port 4 of the device under test 100 is provided with a sixth flange 41, which is connected to the fifth flange 32 at the lower end of the isolation valve 3.

[0025] In addition, the height of the lower end of the communication device 13 is greater than the height of the lower end of the third flange 23. That is to say, the short pipe 2 should be able to fully accommodate the communication device 13 so that the communication device 13 does not affect the opening and closing of the isolation valve 3.

[0026] When the measuring mechanism 1 is measuring normally, the isolation valve 3 is set to the fully open position. When the measuring mechanism 1 needs to be removed for maintenance, first close the isolation valve 3, then open the pressure relief valve 21 on the short pipe 2 to release the gas in the short pipe 2 to a safe position or collection container, and finally remove the measuring mechanism 1 for maintenance.

[0027] After the measuring mechanism 1 is maintained, install it onto the short pipe 2, then close the pressure relief valve 21, and slowly open the isolation valve 3 to the fully open position. The measuring mechanism 1 can then perform normal measurements.

[0028] In this embodiment, the measuring mechanism 1 is a radar level gauge, and the communication device 13 is an antenna. The antenna is responsible for transmitting and receiving electromagnetic waves or microwave pulses, which are reflected when they encounter the surface of the measured medium. The antenna transmits the reflected pulses to the electronic circuitry within the measuring mechanism 1, where a microprocessor processes them to identify the echo generated by the micropulse on the material surface. By measuring the time it takes for the pulse wave to travel from transmission to reception, the distance from the liquid surface to the radar antenna can be calculated, thus determining the liquid level. This process follows the formula: D = (C × T) / 2, where D is the distance from the radar level gauge to the liquid surface, C is the speed of light, and T is the travel time of the electromagnetic wave.

[0029] In other embodiments, the measuring mechanism 1 can also be a tuning fork level switch. When the measuring mechanism 1 is a tuning fork level switch, the communication device 13 is a tuning fork.

Claims

1. A level measuring device, connected to the port (4) of a device (100) to be tested, the level measuring device comprising a measuring mechanism (1), wherein the measuring mechanism (1) is provided with a connecting part (12) and a communication device (13), the connecting part (12) being located at the lower part of the measuring mechanism (1), and the communication device (13) protruding downward from the connecting part (12), characterized in that: It also includes an isolation valve (3), the upper end of which is provided with a receiving mechanism for accommodating the communication device (13), and the isolation valve (3) is connected between the connection part (12) and the port (4) of the device to be tested (100).

2. The level measuring device according to claim 1, characterized in that: The accommodating mechanism is a short pipe (2), the upper end of the short pipe (2) is connected to the connecting part (12), the lower end of the short pipe (2) is connected to the isolation valve (3), and the communication device (13) is housed in the short pipe (2); the isolation valve (3) is connected between the short pipe (2) and the port (4) of the device to be tested (100).

3. The level measuring device according to claim 2, characterized in that: The short pipe (2) is equipped with a pressure relief valve (21) for reducing the internal pressure of the short pipe (2).

4. The level measuring device according to claim 3, characterized in that: The inner diameter of the short pipe (2) and the inner diameter of the isolation valve (3) are the same as the inner diameter of the pipe opening (4) of the device to be tested (100).

5. The level measuring device according to claim 2, characterized in that: The isolation valve (3) is a full-bore ball valve.

6. The level measuring device according to claim 5, characterized in that: The connecting part (12) is a first flange. The upper and lower ends of the short pipe (2) are respectively provided with a second flange (22) and a third flange (23). The upper and lower ends of the isolation valve (3) are respectively provided with a fourth flange (31) and a fifth flange (32). The port (4) of the device to be tested (100) is provided with a sixth flange (41). The connection between the measuring mechanism (1) and the short pipe (2), the connection between the short pipe (2) and the isolation valve (3), and the connection between the isolation valve (3) and the port (4) of the device to be tested (100) are all flange connections.

7. The level measuring device according to claim 6, characterized in that: The lower end of the communication device (13) is at a greater height than the lower end of the third flange (23).

8. The level measuring device according to any one of claims 1 to 7, characterized in that: The measuring mechanism (1) is a radar level gauge, and the communication device (13) is an antenna.

9. The level measuring device according to any one of claims 1 to 7, characterized in that: The measuring mechanism (1) is a tuning fork level switch, and the communication device (13) is a tuning fork.

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