Flowmeter with detachable heat preservation jacket

Abstract

A flow meter with a detachable heat preservation jacket relates to the technical field of flow meter heat preservation, and adopts the technical scheme that the flow meter comprises a sensor outer casing, the heat preservation jacket, a heat preservation outer casing and heat preservation cotton filled between the heat preservation jacket and the heat preservation outer casing; the heat preservation jacket comprises an inlet pipe joint, a first coil pipe, a second coil pipe and an outlet pipe joint which are connected in series; each of the first coil pipe and the second coil pipe comprises a plurality of S-shaped pipes which are connected in series, each S-shaped pipe comprises a straight pipe, a first bent pipe, an inclined pipe and a second bent pipe which are connected in sequence, the second bent pipe is close to the straight pipe, and the first bent pipe of one S-shaped pipe is close to the straight pipe of another adjacent S-shaped pipe; the heat preservation outer cover shell comprises a front outer cover shell body and a rear outer cover shell body. The pipelines are arranged more densely, the total length of the pipelines is increased, and the heat preservation effect is better; the heat preservation jacket and the heat preservation outer shell are both detachable and convenient to maintain, the water leakage holes are additionally formed in the heat preservation outer shell, and corrosion caused by accumulated liquid is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meter heat preservation, in particular to a flow meter with a detachable heat preservation jacket. Background Art

[0002] The insulation device can effectively reduce the impact of fluid temperature changes on the flowmeter measurement results and ensure the accuracy of the measurement. This technology is particularly suitable for working conditions that require long-term stable operation. It can ensure high reliability, reduce the frequency of maintenance and replacement, and reduce production costs. For example, the patent application number 202122767692.0 discloses a Coriolis mass flowmeter with a coil-type structure insulation jacket, which includes a flowmeter sensor, an insulation jacket and an insulation cover. The insulation jacket heats all parts of the flowmeter sensor synchronously. However, the above flowmeter still has the following problems:

[0003] The existing coil-type insulation jacketed pipe assembly is a plurality of U-shaped two-way elbows welded to a straight pipe. Due to the large number of welding points, the risk of pipeline leakage increases.

[0004] The front and rear coils are connected in sequence using U-shaped pipes. This type of pipe is short in total length and sparsely arranged, resulting in poor insulation effect.

[0005] The insulation cover and the flowmeter are welded together as a whole to form a sealed cavity. If the insulation jacket is damaged or leaking, it cannot be repaired. Water droplets condensed on the insulation jacket or water leaked due to pipeline damage can easily accumulate in the sealed cavity, which can easily cause corrosion over time and affect the insulation effect. Utility Model Content

[0006] In view of the problems in the existing technical solutions such as sparse arrangement of insulation jacket pipes, poor insulation effect, and inability to repair, the utility model provides a flow meter with a detachable insulation jacket.

[0007] The utility model provides the following technical solution: a flow meter with a detachable thermal insulation jacket, comprising a sensor outer shell, a thermal insulation jacket arranged on the outer surface of the sensor outer shell, a thermal insulation outer shell covering the thermal insulation jacket, and thermal insulation cotton filled between the thermal insulation jacket and the thermal insulation outer shell;

[0008] The thermal insulation jacket includes an inlet pipe joint, a first coil, a second coil, and an outlet pipe joint connected in series. A pressure plate is provided on the side of the first coil and the second coil facing away from the sensor outer cover, and the pressure plate is detachably connected to the sensor outer cover; the inlet pipe joint and the outlet pipe joint are both provided with a fixing flange, and the fixing flange is detachably connected to the sensor outer cover; the first coil and the second coil each include a plurality of S-shaped tubes connected in series, the S-shaped tubes including a straight tube, a first bend, an oblique tube, and a second bend connected in sequence, and the second bend is close to the straight tube, the first bend of an S-shaped tube is close to the first bend of another adjacent S-shaped tube, and the second bend of an S-shaped tube is close to the second bend of another adjacent S-shaped tube;

[0009] The heat-insulating outer cover shell includes a front outer cover shell and a rear outer cover shell, and the front outer cover shell and the rear outer cover shell are both detachably connected to the sensor outer cover shell, the front outer cover shell and the rear outer cover shell are detachably connected, and the front outer cover shell and the rear outer cover shell are respectively detachably connected to the corresponding pressure plates, and the front outer cover shell and the rear outer cover shell are also provided with water leakage holes.

[0010] Preferably, the inlet pipe joint is provided with a sewage pipe, and the sewage pipe is provided with a stop valve.

[0011] Preferably, the inlet pipe joint and the outlet pipe joint are both provided with pipe flanges.

[0012] Preferably, the sensor housing is provided with a fixing nut, the fixing flange is provided with a bolt hole corresponding to the fixing nut, and the fixing flange is further provided with a nut groove matched with the fixing nut.

[0013] Preferably, the fixing flange is sleeved on the inlet pipe joint and the outlet pipe joint, and the inlet pipe joint and the outlet pipe joint are both provided with flanges at one end facing the sensor outer cover, and the fixing flange is provided with a flange groove matching the flange.

[0014] Preferably, the inlet pipe joint and the outlet pipe joint are closed toward one end of the sensor outer cover shell, and the sides of the inlet pipe joint and the outlet pipe joint are provided with connection ports, the first coil is welded to the connection port of the inlet pipe joint, and the second coil is welded to the connection port of the outlet pipe joint.

[0015] Preferably, a connecting plate is welded to the front outer cover shell, and the connecting plate is connected to the rear outer cover shell by bolts.

[0016] The beneficial effects of the present invention are as follows: the first and second coils are directly bent and formed from a whole pipe and then welded together, which greatly reduces the number of welding points and reduces the risk of pipeline leakage; the structures of the first and second coils are improved, the pipeline arrangement is more dense, and the total length of the pipeline is increased, and the thermal insulation effect is better; the thermal insulation jacket and the thermal insulation outer cover shell are both removable for easy maintenance, and the thermal insulation outer cover shell is additionally provided with a leakage hole to prevent the accumulation of liquid in the thermal insulation outer cover shell and cause corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of an embodiment of a flow meter and its thermal insulation jacket.

[0018] Figure 2 Schematic diagram of an embodiment of a thermal insulation jacket.

[0019] Figure 3 Schematic diagram of an embodiment of an inlet pipe joint.

[0020] Figure 4 It is a cross-sectional view of an embodiment of an inlet pipe joint.

[0021] Figure 5 A schematic diagram of an embodiment of a thermal insulation outer cover.

[0022] Figure numerals: 10, sensor outer cover; 11, fixing nut; 20, thermal insulation jacket; 21, inlet pipe joint; 211, flange; 22, first coil; 221, straight pipe; 222, first elbow; 223, inclined pipe; 224, second elbow; 23, second coil; 24, outlet pipe joint; 25, pressure plate; 26, fixing flange; 261, nut groove; 262, flange groove; 27, drain pipe; 28, pipe flange; 31, front outer cover; 32, rear outer cover; 33, water leakage hole; 34, connecting plate. DETAILED DESCRIPTION

[0023] The following is a more detailed description of the embodiments of the present invention with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the invention after studying this specification. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The utility model provides a flow meter with a detachable heat-insulating jacket. In this embodiment, the flow meter body is a Coriolis mass flow meter, and a measuring tube and multiple sensors are arranged in a sensor outer shell 10 thereof.

[0025] This embodiment also includes an insulating jacket 20 disposed on the outer surface of the sensor housing 10, an insulating outer shell enclosing the insulating jacket 20, and insulating foam filling the space between the insulating jacket 20 and the insulating outer shell. The insulating jacket 20, tightly attached to the outer wall of the sensor housing 10, stabilizes the operating temperature of the measuring tube and sensor, improving measurement accuracy. The insulating foam and insulating outer shell further enhance thermal insulation and reduce heat loss.

[0026] Please refer to Figure 1-Figure 4 The thermal insulation jacket 20 includes an inlet pipe joint 21, a first coil 22, a second coil 23, and an outlet pipe joint 24 connected in series. The heat exchange medium enters the first coil 22 and the second coil 23 from the inlet pipe joint 21 to complete the heat exchange, and then flows out from the outlet pipe joint 24. Specifically, the first coil 22 and the second coil 23 are directly bent and formed by a whole pipe, and then the first and second coils are welded to reduce welding points and reduce the risk of pipeline leakage. The inlet pipe joint 21 and the outlet pipe joint 24 are closed toward one end of the sensor housing 10, and the sides of the inlet pipe joint 21 and the outlet pipe joint 24 are provided with a connection port. The first coil 22 is welded to the connection port of the inlet pipe joint 21, and the second coil 23 is welded to the connection port of the outlet pipe joint 24. Furthermore, the inlet pipe joint 21 is provided with a drain pipe 27, and the drain pipe 27 is provided with a stop valve. The stop valve is closed when the thermal insulation jacket 20 is operating normally, and is opened for draining when maintenance is required.

[0027] The inlet and outlet pipe joints 21 and 24 are provided with pipe flanges 28 on the ends facing away from the sensor housing 10 to facilitate connection to the heat exchange medium delivery pipeline. The inlet and outlet pipe joints 21 and 24 are provided with fixed flanges 26 on the ends facing the sensor housing 10 for removably connecting them to the sensor housing 10. In this embodiment, the fixed flanges 26 can be sleeved onto the inlet and outlet pipe joints 21 and 24 and can slide relative to the inlet and outlet pipe joints. Each of the inlet and outlet pipe joints 21 and 24 is provided with a flange 211 on the end facing the sensor housing 10. The fixed flanges 26 are provided with flange grooves 262 that mate with the flanges 211. When the fixed flanges 26 are connected to the sensor housing 10, the inlet and outlet pipe joints 21 and 24 are compressed by the flanges 211.

[0028] In this embodiment, two fixing nuts 11 are welded to each side of the sensor housing 10. The fixing flange 26 is provided with bolt holes corresponding to the fixing nuts 11. Bolts can be used to connect the fixing flange 26 to the fixing nuts 11. The fixing flange 26 is also provided with nut grooves 261 that mate with the fixing nuts 11, ensuring a tight fit between the fixing flange 26 and the sensor housing 10. When removing the insulation jacket 20, the jacket 20 can be slid downward after loosening the bolts. The welding positions of the multiple fixing nuts 11 must be controlled to prevent interference with the inlet and outlet pipe joints. In other embodiments, other methods can be used to achieve a removable connection between the fixing flange 26 and the sensor housing 10, such as a snap fastener.

[0029] A pressure plate 25 is provided on the side of the first and second coils 22 and 23 facing away from the sensor housing 10, and the pressure plate 25 is bolted to the sensor housing 10, pressing the first and second coils against the sensor housing 10 to enhance heat transfer efficiency and make it easier to replace the coils if damaged. Specifically, the first and second coils 22 and 23 each include a plurality of S-shaped tubes connected in series, which cover the outer wall of the sensor housing 10 to complete heat exchange. The S-shaped tubes include a straight tube 221, a first bend 222, an inclined tube 223, and a second bend 224 connected in sequence, and the second bend 224 is close to the straight tube 221. The first bend of one S-shaped tube is close to the first bend of the adjacent other S-shaped tube, and the second bend of one S-shaped tube is close to the second bend of the adjacent other S-shaped tube. Compared with the prior art, such a pipe arrangement is more compact, the total pipe length is increased, and the thermal insulation effect is better.

[0030] In the prior art, the insulation cover is integrally welded to the flowmeter to form a sealed chamber. When the insulation jacket in the sealed chamber is damaged, it is difficult to replace and forms fluid accumulation, which can easily cause corrosion. To address this problem, the present invention comprises a front outer cover 31 and a rear outer cover 32, both of which are detachably connected to each other and to the sensor outer cover 10. This allows the insulation cover to be disassembled for repair if the insulation jacket 20 is damaged or the insulation foam fails. Furthermore, the front outer cover 31 and the rear outer cover 32 are provided with leak holes 33 to prevent condensation on the insulation cover or water leaking from the insulation jacket 20 due to damage from accumulating inside the insulation cover.

[0031] Please refer to Figure 5A nut is welded on the top of the sensor outer cover shell 10, and corresponding bolt holes are provided on the top of the front and rear outer cover shells. The front and rear outer cover shells are bolted to the sensor outer cover shell 10; the pressure plate 25 is welded with multiple nuts, and the front and rear outer cover shells are provided with corresponding bolt holes, and the front and rear outer cover shells are bolted to the corresponding pressure plates 25; the front outer cover shell 31 is welded with a connecting plate 34, the connecting plate 34 is provided with bolt holes and welded with nuts, the rear outer cover shell 32 is provided with corresponding bolt holes, and the rear outer cover shell 32 is bolted to the connecting plate 34.

[0032] The above is a description of one or more embodiments of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A flow meter with a detachable thermal insulation jacket, comprising a sensor housing, characterized in that: It also includes a heat-insulating jacket arranged on the outer surface of the sensor outer shell, a heat-insulating outer shell covering the heat-insulating jacket, and heat-insulating cotton filled between the heat-insulating jacket and the heat-insulating outer shell; The thermal insulation jacket includes an inlet pipe joint, a first coil, a second coil, and an outlet pipe joint connected in series. A pressure plate is provided on the side of the first coil and the second coil facing away from the sensor outer cover, and the pressure plate is detachably connected to the sensor outer cover; the inlet pipe joint and the outlet pipe joint are both provided with a fixing flange, and the fixing flange is detachably connected to the sensor outer cover; the first coil and the second coil each include a plurality of S-shaped tubes connected in series, the S-shaped tubes including a straight tube, a first bend, an oblique tube, and a second bend connected in sequence, and the second bend is close to the straight tube, the first bend of an S-shaped tube is close to the first bend of another adjacent S-shaped tube, and the second bend of an S-shaped tube is close to the second bend of another adjacent S-shaped tube; The heat-insulating outer cover shell includes a front outer cover shell and a rear outer cover shell, and the front outer cover shell and the rear outer cover shell are both detachably connected to the sensor outer cover shell, the front outer cover shell and the rear outer cover shell are detachably connected, and the front outer cover shell and the rear outer cover shell are respectively detachably connected to the corresponding pressure plates, and the front outer cover shell and the rear outer cover shell are also provided with water leakage holes.

2. A flow meter with a detachable thermal insulation jacket according to claim 1, characterized in that: The inlet pipe joint is provided with a sewage pipe, and the sewage pipe is provided with a stop valve.

3. The flow meter with a detachable thermal insulation jacket according to claim 1, characterized in that: The inlet pipe joint and the outlet pipe joint are both provided with pipeline flanges.

4. The flow meter with a detachable thermal insulation jacket according to claim 1, characterized in that: The sensor outer cover is provided with a fixing nut, the fixing flange is provided with a bolt hole corresponding to the fixing nut, and the fixing flange is further provided with a nut groove matched with the fixing nut.

5. The flow meter with a detachable thermal insulation jacket according to claim 1, characterized in that: The fixed flange is sleeved on the inlet pipe joint and the outlet pipe joint, and the inlet pipe joint and the outlet pipe joint are both provided with flanges at one end facing the sensor outer cover, and the fixed flange is provided with a flange groove that matches the flange.

6. The flow meter with a detachable thermal insulation jacket according to claim 1, characterized in that: The inlet pipe joint and the outlet pipe joint are closed toward one end of the sensor outer cover, and the sides of the inlet pipe joint and the outlet pipe joint are both provided with connection ports. The first coil is welded to the connection port of the inlet pipe joint, and the second coil is welded to the connection port of the outlet pipe joint.

7. The flow meter with a detachable thermal insulation jacket according to claim 1, characterized in that: A connecting plate is welded to the front outer cover shell, and the connecting plate is connected to the rear outer cover shell with bolts.

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