Gas pipeline pressure fluctuation prediction device

Abstract

The utility model discloses a gas pipeline pressure fluctuation prediction device which comprises a differential pressure transmitter and further comprises a heat dissipation mechanism, the heat dissipation mechanism comprises C-shaped plates, a protection plate, a frame plate, a fan, an L-shaped supporting plate, an abutting rod, a temperature control probe and a temperature control switch, the C-shaped plates are symmetrically pressed outside a metal shell of the differential pressure transmitter in a clamped mode, the protection plate is welded to the back face of a plate body of each C-shaped plate, and the frame plate is connected with the frame plate. A heat dissipation mechanism is arranged at the position of a metal shell of the differential pressure transmitter, and the heat dissipation mechanism enables a temperature measurement structure capable of being triggered at the set temperature to exist outside the metal shell of the differential pressure transmitter; the fan can be started to blow and dissipate heat to the thin-wall position, provided with the surface groove, of the differential pressure transmitter, the temperature of the surface of the differential pressure transmitter is dissipated outwards under the driving of wind power, and it is guaranteed that the differential pressure transmitter can be applied to gas pipeline pressure fluctuation detection in an outdoor high-temperature environment with a long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline pressure fluctuation detection devices, in particular to a gas pipeline pressure fluctuation prediction device. Background Art

[0002] Gas pipeline refers to pipelines mainly used to transport natural gas, liquefied petroleum gas, and artificial coal gas. Although pipeline transportation has many advantages, it also has risks such as leakage and failure, which will lead to transportation interruption or leakage, causing significant economic losses and further safety risks. With the gradual development of sensors and pipeline transportation, the concept of digitalization of natural gas networks has emerged in gas pipelines. The gas pipeline industry uses sensors and data acquisition equipment to monitor pipelines through non-interconnected natural gas distribution networks (through antennas) to prevent pipeline leakage and failure, while monitoring risk issues such as gas quality and consumption balance distributed in the pipeline.

[0003] At present, when the gas pipeline is tested for pressure fluctuation, a differential pressure transmitter is usually installed in the gas pipeline to test the pressure fluctuation of the gas pipeline, and then the test data is converted into a current signal and output to the pressure display device to cooperate with the software for pressure fluctuation analysis;

[0004] When installing the differential pressure transmitter, it is necessary to open a hole in the pipeline, weld the pressure measuring tube, wrap it with PTFE sealing tape, install the needle valve and buffer tube, and then install the differential pressure transmitter on the other side of the buffer tube. The differential pressure transmitter is a full stainless steel 316L silicone oil filled welded sealing structure. When dissipating heat, it usually relies on silicone oil and stainless steel for conduction heat dissipation. In the high temperature of summer, the differential pressure transmitter is easily affected by the excessively high external temperature, which causes the differential pressure transmitter to overheat and be damaged when detecting pressure fluctuations in the gas pipeline, thereby affecting the life of the differential pressure transmitter when detecting gas pipeline pressure fluctuations in the outside world. For this reason, we propose a gas pipeline pressure fluctuation prediction device. Utility Model Content

[0005] The main purpose of the utility model is to provide a gas pipeline pressure fluctuation prediction device, a heat dissipation mechanism is arranged at the metal shell of the differential pressure transmitter, the heat dissipation mechanism enables the existence of a temperature measuring structure that can be triggered by a set temperature outside the metal shell of the differential pressure transmitter, and then when the temperature measuring structure measures that the temperature of the surface of the differential pressure transmitter reaches a higher set temperature, the fan can be turned on to blow air to the thin-walled position of the differential pressure transmitter with a table groove to dissipate heat, and the temperature of the surface of the differential pressure transmitter is dissipated outward under the drive of the wind, thereby ensuring that the differential pressure transmitter can be used for gas pipeline pressure fluctuation detection for a long life in an outdoor high temperature environment, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A gas pipeline pressure fluctuation prediction device includes a differential pressure transmitter and a heat dissipation mechanism, wherein the heat dissipation mechanism includes a C-shaped plate, a guard plate, a frame plate, a fan, an L-shaped support plate, a push rod, a temperature control probe and a temperature control switch, wherein a C-shaped plate is symmetrically clamped on the outside of a metal shell of the differential pressure transmitter, and a guard plate is welded to the back of the plate body of the C-shaped plate, a double set of plate bodies of the guard plate are welded to the surface of the frame plate, and the outer plate surface of the frame plate is bolted to the fan, a surface groove is recessed on the surface of the differential pressure transmitter between the C-shaped plates, and an L-shaped support plate is welded outside the guard plate above the C-shaped plate, a screw hole is opened on the L-shaped support plate toward the vertical plate body of the differential pressure transmitter, and a push rod for pressing the differential pressure transmitter is screwed into the screw hole, a vertical hole is opened above the push rod, and a temperature control probe that contacts the metal shell of the differential pressure transmitter is inserted into the vertical hole, and the output end of the temperature control probe is electrically connected to the input end of the temperature control switch.

[0008] Furthermore, a tail handle is welded to the rod body of the abutment rod, and a raised plate is raised on the surface of the tail handle;

[0009] By adopting the above technical solution, the push rod can be screwed into the screw hole by holding the tail handle of the push rod, so that the push rod can be pressed against the metal shell of the differential pressure transmitter.

[0010] Furthermore, a frame opening for air flow is provided on the plate surface of the frame plate, and the frame opening of the frame plate faces the surface groove;

[0011] By adopting the above technical solution, the wind force of the fan can be blown from the frame opening to the surface groove.

[0012] Furthermore, the diameter of the vertical hole is the same as the shell diameter of the temperature control probe;

[0013] By adopting the above technical solution, the temperature control probe can be vertically inserted into the vertical hole, which facilitates the temperature control probe to contact the metal shell of the differential pressure transmitter for temperature measurement.

[0014] Furthermore, a mounting hole for screwing bolts is provided between the fan frame and the plate body of the frame plate;

[0015] By adopting the above technical solution, there are mounting holes between the fan frame and the frame plate of the fan, and bolts can be screwed in for installation.

[0016] Furthermore, a spacing distance greater than the diameter of the differential pressure transmitter housing is reserved between the C-shaped plate and the vertical plate body of the L-shaped support plate;

[0017] By adopting the above technical solution, the metal shell of the differential pressure transmitter can be inserted between the C-shaped plate and the vertical plate body of the L-shaped support plate, and then the C-shaped plate can be clamped to the outside of the metal shell of the differential pressure transmitter.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model arranges a heat dissipation mechanism at the metal shell of the differential pressure transmitter. The heat dissipation mechanism enables a temperature measuring structure that can be triggered by a set temperature to be present outside the metal shell of the differential pressure transmitter. Then, when the temperature measuring structure measures that the temperature on the surface of the differential pressure transmitter reaches a higher set temperature, the fan can be turned on to blow air to the thin-walled position of the differential pressure transmitter where the table groove is provided to dissipate heat. The temperature on the surface of the differential pressure transmitter is dissipated outwardly under the drive of the wind, thereby ensuring that the differential pressure transmitter can be used for gas pipeline pressure fluctuation detection for a long service life in an outdoor high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a gas pipeline pressure fluctuation prediction device.

[0021] Figure 2 It is an exploded diagram of the heat dissipation mechanism of a gas pipeline pressure fluctuation prediction device of the utility model.

[0022] In the figure: 1. differential pressure transmitter; 2. heat dissipation mechanism; 3. C-shaped plate; 4. protective plate; 5. frame plate; 6. fan; 7. table groove; 8. L-shaped support plate; 9. screw hole; 10. support rod; 11. vertical hole; 12. temperature control probe; 13. temperature control switch. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-2 As shown, a gas pipeline pressure fluctuation prediction device includes a differential pressure transmitter 1 and a heat dissipation mechanism 2, wherein the heat dissipation mechanism 2 includes a C-shaped plate 3, a guard plate 4, a frame plate 5, a fan 6, an L-shaped support plate 8, a stopper 10, a temperature control probe 12 and a temperature control switch 13. The C-shaped plate 3 is symmetrically clamped on the outside of the metal shell of the differential pressure transmitter 1, and the guard plate 4 is welded on the back of the plate body of the C-shaped plate 3. The double sets of plate bodies of the guard plate 4 are welded to the surface of the frame plate 5, and the outer plate surface of the frame plate 5 is bolted to the fan 6. The surface of the differential pressure transmitter 1 between the C-shaped plates 3 is recessed to form a surface groove 7, and an L-shaped support plate 8 is welded to the outside of the protective plate 4 above the C-shaped plate 3, and the L-shaped support plate 8 has a screw hole 9 outside the vertical plate body facing the differential pressure transmitter 1, and a support rod 10 for pressing the differential pressure transmitter 1 is screwed into the screw hole 9, a vertical hole 11 is formed above the support rod 10, and a temperature control probe 12 contacting the metal shell of the differential pressure transmitter 1 is inserted into the vertical hole 11, and the output end of the temperature control probe 12 is electrically connected to the input end of the temperature control switch 13.

[0025] Wherein, a tail handle is welded on the rod body of the abutment rod 10, and a raised plate is raised on the surface of the tail handle;

[0026] By adopting the above technical solution, the push rod 10 can be screwed into the screw hole 9 by holding the tail handle of the push rod 10, so that the push rod 10 can be pressed against the metal shell of the differential pressure transmitter 1.

[0027] The surface of the frame plate 5 is provided with a frame opening for passing air, and the frame opening of the frame plate 5 faces the surface groove 7;

[0028] By adopting the above technical solution, the wind force of the fan 6 can be blown from the frame opening to the surface groove 7.

[0029] The diameter of the vertical hole 11 is the same as the shell diameter of the temperature control probe 12;

[0030] By adopting the above technical solution, the temperature control probe 12 can be vertically inserted into the vertical hole 11, so that the temperature control probe 12 can contact the metal shell of the differential pressure transmitter 1 to measure the temperature.

[0031] Wherein, a mounting hole for screwing bolts is provided between the fan frame of the fan 6 and the plate body of the frame plate 5;

[0032] By adopting the above technical solution, there is a mounting hole between the fan frame of the fan 6 and the frame plate 5, and bolts can be screwed in for installation.

[0033] Wherein, a spacing distance greater than the diameter of the housing of the differential pressure transmitter 1 is reserved between the C-shaped plate 3 and the vertical plate body of the L-shaped support plate 8;

[0034] By adopting the above technical solution, the metal shell of the differential pressure transmitter 1 can be inserted between the C-shaped plate 3 and the vertical plate body of the L-shaped support plate 8, and then the C-shaped plate 3 can be clamped outside the metal shell of the differential pressure transmitter 1.

[0035] It should be noted that the utility model is a device for predicting pressure fluctuations in a gas pipeline. After the surface groove 7 of the heat dissipation mechanism 2 is set at the metal shell of the differential pressure transmitter 1, there is a thin-walled position of the differential pressure transmitter 1 at the surface groove 7, and the metal shell of the differential pressure transmitter 1 can be inserted between the C-shaped plate 3 of the heat dissipation mechanism 2 and the vertical plate body of the L-shaped support plate 8, and then the C-shaped plate 3 can be stuck to the outside of the metal shell of the differential pressure transmitter 1. At this time, the push rod 10 is rotated from the screw hole 9 to the metal shell of the differential pressure transmitter 1. Under the opposite clamping action of the push rod 10 and the C-shaped plate 3, the heat dissipation mechanism 2 is installed outside the metal shell of the differential pressure transmitter 1, and the temperature control probe 12 of the temperature control switch 13 can be inserted at the vertical hole 11 of the L-shaped support plate 8 to measure the temperature of the shell of the differential pressure transmitter 1. The temperature control switch 13 can set the control temperature according to the experience requirements of the maintenance personnel of the differential pressure transmitter 1, and then the fan 6 can be installed at the frame plate 5. The fan 6 can be sold on the market. The common wiring terminals or solenoid valves are connected to the temperature control switch 13. When the shell temperature of the differential pressure transmitter 1 rises to the preset temperature of the temperature control switch 13 under the influence of the external temperature, the temperature control switch 13 can measure the temperature of the differential pressure transmitter 1 with the temperature control probe 12. Then the temperature control switch 13 can control the fan 6 to be energized to blow air to the surface groove 7 of the differential pressure transmitter 1 between the guard plates 4 to dissipate heat. The temperature of the surface of the differential pressure transmitter 1 is brought up by the wind, and the wind can be blown out from between the guard plates 4 to ensure that the differential pressure transmitter 1 can be used for gas pipeline pressure fluctuation detection for a long life in outdoor high temperature environment. When the temperature of the differential pressure transmitter 1 is detected by the temperature control probe 12 to be lower than the set temperature of the temperature control switch 13, the temperature control switch 13 can control the fan 6 to be powered off, and the detection head of the differential pressure transmitter 1 can be normally screwed and installed at the buffer tube for gas pipeline pressure fluctuation detection according to the existing installation scheme on the market.

[0036] It should be noted that the utility model is a gas pipeline pressure fluctuation prediction device, and the components in the utility model are all components known to technical personnel in the field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas pipeline pressure fluctuation prediction device, comprising a differential pressure transmitter (1), characterized in that: The invention also comprises a heat dissipation mechanism (2), wherein the heat dissipation mechanism (2) comprises a C-shaped plate (3), a guard plate (4), a frame plate (5), a fan (6), an L-shaped support plate (8), a stopper (10), a temperature control probe (12) and a temperature control switch (13); the C-shaped plate (3) is symmetrically clamped on the outside of the metal shell of the differential pressure transmitter (1), and the guard plate (4) is welded to the back of the plate body of the C-shaped plate (3); the double plate bodies of the guard plate (4) are welded to the surface of the frame plate (5), and the outer plate surface of the frame plate (5) is bolted to the fan (6); the differential pressure transmitter (12) between the C-shaped plates (3) is connected to the fan (6); 1) The surface is sunken to form a surface groove (7), and an L-shaped support plate (8) is welded to the outside of the guard plate (4) above the C-shaped plate (3), a screw hole (9) is formed on the outside of the vertical plate of the L-shaped support plate (8) facing the differential pressure transmitter (1), and a support rod (10) for pressing the differential pressure transmitter (1) is screwed into the screw hole (9), a vertical hole (11) is formed above the support rod (10), and a temperature control probe (12) contacting the metal shell of the differential pressure transmitter (1) is inserted into the vertical hole (11), and the output end of the temperature control probe (12) is electrically connected to the input end of the temperature control switch (13).

2. A gas pipeline pressure fluctuation prediction device according to claim 1, characterized in that: A tail handle is welded to the rod body of the stop rod (10), and a raised plate is raised on the surface of the tail handle.

3. A gas pipeline pressure fluctuation prediction device according to claim 1, characterized in that: A frame opening for air flow is provided on the plate surface of the frame plate (5), and the frame opening of the frame plate (5) faces the surface groove (7).

4. A gas pipeline pressure fluctuation prediction device according to claim 1, characterized in that: The diameter of the vertical hole (11) is the same as the shell diameter of the temperature control probe (12).

5. The gas pipeline pressure fluctuation prediction device according to claim 1, characterized in that: A mounting hole for screwing bolts is provided between the fan frame of the fan (6) and the plate body of the frame plate (5).

6. A gas pipeline pressure fluctuation prediction device according to claim 1, characterized in that: A spacing distance greater than the diameter of the housing of the differential pressure transmitter (1) is reserved between the C-shaped plate (3) and the vertical plate body of the L-shaped support plate (8).

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