Natural gas pressure regulating pry

Abstract

The utility model discloses a natural gas pressure regulating pry, and belongs to the technical field of pressure regulating pry. Comprising a base, and an air inlet pipe and an air outlet pipe are arranged on the top of the base; the connecting pipe is connected between the air inlet pipe and the air outlet pipe, and the connecting pipe is provided with a working pressure regulating valve, a monitoring pressure regulating valve and a safety cut-off valve in one step in the direction from the air inlet pipe to the air outlet pipe; the heat exchange mechanism is mounted between the air inlet pipe and the working pressure regulating valve; the water outlet mechanism is mounted at the bottom of the heat exchange mechanism; the drying assembly is mounted on the air inlet pipe between the heat exchange mechanism and the working pressure regulating valve, the air inlet pipe is cooled and the working pressure regulating valve is heated through the heat exchange mechanism, so that water vapor of natural gas is cooled and condensed at the air inlet pipe, condensed water is discharged in time through the water outlet mechanism, and then the natural gas is dried by the drying assembly again; the water in the natural gas is fully removed, and the working pressure regulating valve is heated through the heat exchange mechanism, so that the ice blockage phenomenon at the working pressure regulating valve is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of pressure regulating skids, and more specifically, to a natural gas pressure regulating skid. Background Art

[0002] The purpose of the natural gas distribution station pressure regulating skid is to reduce the pressure and throttle the natural gas by installing a working pressure regulating valve, a monitoring pressure regulating valve and a safety shut-off valve on the pipeline, thereby adjusting the outlet pressure and facilitating transportation to the user end.

[0003] The document with prior art publication number CN209876519U provides a natural gas distribution station pressure regulating skid, including a base, a pipe fitting, a working pressure regulating valve, a monitoring pressure regulating valve, a safety shut-off valve and a pressure-leading pipe. The pipe fitting is fixed on the base, and the pipe fitting, the working pressure regulating valve, the monitoring pressure regulating valve and the safety shut-off valve are connected in sequence. The pressure-leading pipe is connected to the pipe fitting, and a flow control module is connected between the pipe fitting and the working pressure regulating valve. An air inlet hole and an exhaust hole are respectively provided on both side end faces of the flow control module. An air inlet flow control module is fixed in the air inlet hole, and an exhaust flow control module is fixed in the exhaust hole.

[0004] Although the above-mentioned prior art solutions can achieve the relevant beneficial effects through the structure of the prior art, they still have the following defects:

[0005] The flow control module is used to control the flow, reduce the pressure and throttle the natural gas. Due to the existence of the Joule-Thomson effect, the natural gas temperature decreases accordingly. When the water dew point of the natural gas is high, water will precipitate. The air inlet pipe at the flow control module lacks a water outlet structure, which will cause water accumulation and ice blockage in the pipeline and the working pressure regulating valve, posing a hidden danger.

[0006] Regarding the above-mentioned related technologies, the inventor believes that by controlling the flow, reducing the pressure and throttling the natural gas through the flow control module, the natural gas temperature will decrease due to the existence of the Joule-Thomson effect. When the water dew point of the natural gas is high, water will be precipitated. However, the air inlet pipe at the flow control module lacks a water outlet structure, which will lead to water accumulation and ice blockage in the pipeline and the working pressure regulating valve, posing a hidden danger.

[0007] In view of this, we propose a natural gas pressure regulating skid. Utility Model Content

[0008] 1. Technical problems to be solved

[0009] The purpose of this application is to provide a natural gas pressure regulating skid, which solves the technical problem of controlling the flow, reducing the pressure and throttling of natural gas through a flow control module in the above-mentioned background technology. Due to the existence of the Joule-Thomson effect, the temperature of natural gas decreases accordingly. When the water dew point of natural gas is high, water will be precipitated. However, the air inlet pipe at the flow control module lacks a water outlet structure, which will lead to water accumulation and ice blockage in the pipeline and the working pressure regulating valve, which poses a hidden danger. The technical effect is achieved.

[0010] 2. Technical solution

[0011] The technical solution of this application provides a natural gas pressure regulating skid, comprising:

[0012] A base, wherein an air inlet pipe and an air outlet pipe are provided on the top of the base;

[0013] A connecting pipe is provided between the air inlet pipe and the air outlet pipe, and a working pressure regulating valve, a monitoring pressure regulating valve and a safety shut-off valve are installed on the connecting pipe along the direction from the air inlet pipe to the air outlet pipe;

[0014] A heat exchange mechanism is installed between the air inlet pipe and the working pressure regulating valve;

[0015] A water outlet mechanism is installed at the bottom of the heat exchange mechanism;

[0016] A drying component is installed on the air inlet pipe between the heat exchange mechanism and the working pressure regulating valve.

[0017] Through the above solution, the heat exchange mechanism is used to cool the air inlet pipe and heat the working pressure regulating valve, so that the water vapor in the natural gas is cooled and condensed at the air inlet pipe, and the condensed water is discharged in time through the water outlet mechanism. The natural gas is then dried again by the drying component to fully remove the moisture in the natural gas. Combined with the heating of the working pressure regulating valve by the heat exchange mechanism, ice blockage at the working pressure regulating valve is avoided.

[0018] Optionally, the heat exchange mechanism includes a mounting box, the air inlet pipe is fixedly sleeved with a mounting box, the top of the mounting box is fixedly installed with a heat exchange box, a semiconductor refrigeration plate is fixedly sleeved between the heat exchange box and the mounting box, the cold end of the semiconductor refrigeration plate extends into the mounting box and is fixedly installed with multiple condensation nets, a heat exchange tube is fixedly sleeved on the heat exchange box, the heat exchange tube is filled with heat exchange oil, and one side of the heat exchange tube is in contact with the hot end of the semiconductor refrigeration plate, and the other side of the heat exchange tube is in contact with the outer wall of the working pressure regulating valve, a circulation pump is fixedly installed on the outer wall of the heat exchange box, and the circulation pump is connected to the heat exchange tube.

[0019] Through the above scheme, the cold end is cold and the hot end is hot when the semiconductor refrigeration plate is working, so that the condensation network is cooled to condense and remove the water in the natural gas, and the hot end heats the heat exchange oil in the heat exchange pipe. The circulating oil is circulated through the circulating pump, thereby heating and keeping the working pressure regulating valve warm, avoiding ice blockage when the working pressure regulating valve is throttling.

[0020] Optionally, the water outlet mechanism includes a water collecting box, the bottom of the installation box is fixedly sleeved with the water collecting box, the inner wall of the water collecting box is fixedly installed with a partition, the inner cavity of the water collecting box on both sides of the partition forms a water inlet chamber and a water outlet chamber, the side wall of the water collecting box at the water outlet chamber is fixedly sleeved with an overflow pipe, a filter is fixedly installed between the bottom of the partition and the bottom of the water collecting box, the bottom height of the overflow pipe is greater than the height of the filter, the top of the partition is an inclined structure, and the side wall of the water collecting box at the water inlet chamber is installed with a sealing door.

[0021] Through the above scheme, the water at the condensation point is guided into the water inlet chamber through the inclined structure at the top of the partition, and then enters the water outlet chamber after being filtered by the filter. A communicating vessel is formed between the water inlet chamber and the water outlet chamber, and the liquid levels are at the same height. Then, after the liquid level in the water outlet chamber gradually rises, the condensed water is discharged through the overflow pipe, and the liquid level is higher than the filter, thereby achieving the purpose of water sealing. For long-term use, the valves at the air inlet pipe and the air outlet pipe can be closed, and the sealing door can be opened to achieve the purpose of cleaning.

[0022] Optionally, the drying component includes a mounting seat, the mounting seat is fixedly installed on the air inlet pipe, a placement box is slidably connected between the mounting seat and the air inlet pipe, air-permeable nets are fixedly installed on both sides of the placement box, a placement opening is opened on the top of the placement box, a flange is fixedly installed on the end of the placement box, and the flange is bolted to the mounting seat.

[0023] Through the above solution, the desiccant is placed in the box and inserted into the mounting seat and the air inlet pipe, so that the condensed and dehydrated natural gas is dried and dehydrated again, and the moisture in the natural gas is fully removed.

[0024] 3. Beneficial effects

[0025] One or more technical solutions provided in the technical solution of this application have at least the following technical effects or advantages:

[0026] 1. This application utilizes the phenomenon of the cold end being cold and the hot end being hot when the semiconductor refrigeration chip is in operation, thereby causing the condensation network to cool down and condense the water in the natural gas. The condensed water is guided into the water inlet chamber through the inclined structure at the top of the partition, and then enters the water outlet chamber after being filtered by the filter. A communicating vessel is formed between the water inlet chamber and the water outlet chamber, and the liquid levels are at the same height. As the liquid level in the water outlet chamber gradually rises, the condensed water is discharged through the overflow pipe, and the liquid level is higher than the filter, thus achieving the purpose of water sealing.

[0027] 2. Place desiccant in the box and insert it into the mounting base and the air inlet pipe to dry and dehydrate the condensed and dehydrated natural gas again, fully remove the moisture in the natural gas, and avoid the precipitation of moisture due to pressure reduction and throttling at the working pressure regulating valve. The hot end of the semiconductor refrigeration plate heats the heat exchange oil in the heat exchange tube, which circulates through the circulating pump, thereby heating and insulating the working pressure regulating valve, and avoiding ice blockage when the working pressure regulating valve reduces pressure and throttling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of a natural gas pressure regulating skid disclosed in a preferred embodiment of the present application;

[0029] Figure 2 A preferred embodiment of this application is disclosed Figure 1 A in the middle is an enlarged structural diagram;

[0030] Figure 3 A preferred embodiment of this application is disclosed Figure 2 The enlarged structural diagram at C in the middle;

[0031] Figure 4 A preferred embodiment of this application is disclosed Figure 1 The enlarged structural diagram at B in the middle;

[0032] Explanation of the numbers in the figure: 1. Base; 2. Air inlet pipe; 3. Air outlet pipe; 4. Connecting pipe; 5. Heat exchange mechanism; 51. Installation box; 52. Heat exchange box; 53. Semiconductor refrigeration plate; 54. Condensation network; 55. Heat exchange tube; 56. Circulation pump; 6. Water outlet mechanism; 61. Water collecting box; 62. Partition; 63. Filter; 64. Water inlet chamber; 65. Water outlet chamber; 66. Overflow pipe; 67. Sealing door; 7. Drying assembly; 71. Mounting seat; 72. Placement box; 73. Placement port; 74. Breathable net; 75. Flange; 8. Working pressure regulating valve; 9. Monitoring pressure regulating valve; 10. Safety shut-off valve. DETAILED DESCRIPTION

[0033] The present application is further described in detail below with reference to the accompanying drawings.

[0034] Reference Figure 1 The embodiment of the present application provides a natural gas pressure regulating skid, comprising: a base 1, with an air inlet pipe 2 and an air outlet pipe 3 provided at the top; a connecting pipe 4, with the air inlet pipe 2 and the air outlet pipe 3 connected thereto, and a working pressure regulating valve 8, a monitoring pressure regulating valve 9, and a safety shut-off valve 10 installed along the direction from the air inlet pipe 2 to the air outlet pipe 3; a heat exchange mechanism 5, with the heat exchange mechanism 5 installed between the air inlet pipe 2 and the working pressure regulating valve 8; a water outlet mechanism 6, with the water outlet mechanism 6 installed at the bottom of the heat exchange mechanism 5; and a drying assembly 7, with the drying assembly 7 installed on the air inlet pipe 2 between the heat exchange mechanism 5 and the working pressure regulating valve 8. The heat exchange mechanism 5 cools the air inlet pipe 2 and heats the working pressure regulating valve 8, thereby causing water vapor in the natural gas to cool and condense at the air inlet pipe 2, and the condensed water is promptly discharged through the water outlet mechanism 6. The natural gas is then dried again by the drying assembly 7 to fully remove the moisture in the natural gas. Combined with the heating of the working pressure regulating valve 8 by the heat exchange mechanism 5, ice blockage at the working pressure regulating valve 8 is avoided.

[0035] Reference Figure 1 and Figure 2The heat exchange mechanism 5 includes a mounting box 51, which is fixedly sleeved on the air inlet pipe 2. A heat exchange box 52 is fixedly installed on the top of the mounting box 51. A semiconductor refrigeration sheet 53 is fixedly sleeved between the heat exchange box 52 and the mounting box 51. The cold end of the semiconductor refrigeration sheet 53 extends into the mounting box 51 and is fixedly installed with multiple condensation nets 54. A heat exchange tube 55 is fixedly sleeved on the heat exchange box 52. The heat exchange tube 55 is filled with heat exchange oil, and one side of the heat exchange tube 55 is in contact with the heat of the semiconductor refrigeration sheet 53. The heat exchanger 55 is connected to the heat exchanger tube 55, and the other side of the heat exchange tube 55 is attached to the outer wall of the working pressure regulating valve 8. A circulating pump 56 is fixedly installed on the outer wall of the heat exchange box 52. The circulating pump 56 is connected to the heat exchange tube 55. When the semiconductor refrigeration plate 53 is working, the cold end is cold and the hot end is hot, so that the condensation network 54 is cooled to condense and remove the moisture in the natural gas, and the hot end heats the heat exchange oil in the heat exchange tube 55, which circulates through the circulating pump 56, thereby heating and keeping the working pressure regulating valve 8 warm, avoiding ice blockage when the working pressure regulating valve 8 is throttled.

[0036] Reference Figure 2 and Figure 3 The water outlet mechanism 6 includes a water collecting box 61. The bottom of the installation box 51 is fixedly sleeved with the water collecting box 61. A partition 62 is fixedly installed on the inner wall of the water collecting box 61. The inner cavity of the water collecting box 61 on both sides of the partition 62 forms a water inlet chamber 64 and a water outlet chamber 65. An overflow pipe 66 is fixedly sleeved on the side wall of the water collecting box 61 at the water outlet chamber 65. A filter screen 63 is fixedly installed between the bottom of the partition 62 and the bottom of the water collecting box 61. The bottom height of the overflow pipe 66 is greater than the height of the filter screen 63. The top of the partition 62 is an inclined structure. The water inlet chamber 64 is formed in the inner cavity of the water collecting box 61. A sealing door 67 is installed on the side wall of the water collecting box 61. The water at the condensation point is guided into the water inlet chamber 64 through the inclined structure at the top of the partition 62, and then enters the water outlet chamber 65 after being filtered by the filter screen 63. A communicating vessel is formed between the water inlet chamber 64 and the water outlet chamber 65. When the liquid levels are at the same height, the liquid level in the water outlet chamber 65 gradually rises and the condensed water is discharged through the overflow pipe 66. The liquid level is higher than the filter screen 63, so the water seal is achieved. For long-term use, the valves at the air inlet pipe 2 and the air outlet pipe 3 can be closed, and the sealing door 67 can be opened to achieve the cleaning purpose.

[0037] Furthermore, a valve may be installed on the overflow pipe 66 to facilitate sealing during initial use and after cleaning, and the valve may be opened after the condensed water is sealed.

[0038] Reference Figure 1 and Figure 4The drying assembly 7 includes a mounting base 71, which is fixedly mounted on the intake pipe 2. A placement box 72 is slidably connected between the mounting base 71 and the intake pipe 2. Air permeable nets 74 are fixedly mounted on both sides of the placement box 72. A placement opening 73 is opened on the top of the placement box 72. A flange 75 is fixedly mounted on the end of the placement box 72. The flange 75 is bolted to the mounting base 71. A desiccant is placed in the placement box 72 and is inserted into the mounting base 71 and the intake pipe 2, so that the condensed and dehydrated natural gas is dried and dehydrated again, and the moisture in the natural gas is fully removed.

[0039] Working principle: When the semiconductor refrigeration plate 53 is working, the cold end is cold and the hot end is hot, so that the condensation network 54 is cooled to condense and remove water in the natural gas. The water at the condensation point is guided into the water inlet chamber 64 through the inclined structure at the top of the partition 62, and then enters the water outlet chamber 65 after being filtered by the filter 63. A communicating vessel is formed between the water inlet chamber 64 and the water outlet chamber 65. The liquid levels are the same, and the liquid level in the water outlet chamber 65 gradually rises and the condensed water is discharged through the overflow pipe 66. The liquid level is higher than the filter 63, achieving the purpose of water sealing. A desiccant is placed in the placement box 72 and inserted into the mounting seat 71 and the air inlet pipe 2, so that the condensed and dehydrated natural gas is dried and dehydrated again, and the moisture in the natural gas is fully removed to avoid the precipitation of water due to pressure reduction and throttling at the working pressure regulating valve 8. The hot end of the semiconductor refrigeration plate 53 heats the heat exchange oil in the heat exchange tube 55, and circulates it through the circulation pump 56, thereby heating and keeping the working pressure regulating valve 8 warm to avoid ice blockage when the working pressure regulating valve 8 is reduced in pressure and throttling.

Claims

1. A natural gas pressure regulating skid, characterized by: Include: A base (1), wherein an air inlet pipe (2) and an air outlet pipe (3) are provided on the top of the base (1); A connecting pipe (4) is connected between the air inlet pipe (2) and the air outlet pipe (3), and the connecting pipe (4) is equipped with a working pressure regulating valve (8), a monitoring pressure regulating valve (9) and a safety shut-off valve (10) along the direction from the air inlet pipe (2) to the air outlet pipe (3); A heat exchange mechanism (5) is installed between the air inlet pipe (2) and the working pressure regulating valve (8); A water outlet mechanism (6), wherein a water outlet mechanism (6) is installed at the bottom of the heat exchange mechanism (5); A drying component (7) is installed on the air inlet pipe (2) between the heat exchange mechanism (5) and the working pressure regulating valve (8).

2. A natural gas pressure regulating skid according to claim 1, characterized in that: The heat exchange mechanism (5) includes a mounting box (51), the mounting box (51) is fixedly sleeved on the air inlet pipe (2), a heat exchange box (52) is fixedly installed on the top of the mounting box (51), a semiconductor refrigeration plate (53) is fixedly sleeved between the heat exchange box (52) and the mounting box (51), the cold end of the semiconductor refrigeration plate (53) extends into the mounting box (51) and is fixedly installed with a plurality of condensation nets (54), a heat exchange tube (55) is fixedly sleeved on the heat exchange box (52), the heat exchange tube (55) is filled with heat exchange oil, and one side of the heat exchange tube (55) is in contact with the hot end of the semiconductor refrigeration plate (53), and the other side of the heat exchange tube (55) is in contact with the outer wall of the working pressure regulating valve (8), and a circulation pump (56) is fixedly installed on the outer wall of the heat exchange box (52), and the circulation pump (56) is connected to the heat exchange tube (55).

3. A natural gas pressure regulating skid according to claim 2, characterized in that: The water outlet mechanism (6) comprises a water collecting box (61), the bottom of the installation box (51) is fixedly sleeved with the water collecting box (61), a partition (62) is fixedly installed on the inner wall of the water collecting box (61), the inner cavity of the water collecting box (61) on both sides of the partition (62) forms a water inlet cavity (64) and a water outlet cavity (65), the side wall of the water collecting box (61) at the water outlet cavity (65) is fixedly sleeved with an overflow pipe (66), and a filter (63) is fixedly installed between the bottom of the partition (62) and the bottom of the water collecting box (61).

4. A natural gas pressure regulating skid according to claim 3, characterized in that: The bottom height of the overflow pipe (66) is greater than the height of the filter screen (63), the top of the partition (62) is an inclined structure, and a sealing door (67) is installed on the side wall of the water collection box (61) at the water inlet chamber (64).

5. The natural gas pressure regulating skid according to claim 1, characterized in that: The drying assembly (7) comprises a mounting seat (71), the mounting seat (71) is fixedly mounted on the air inlet pipe (2), a placement box (72) is slidably connected between the mounting seat (71) and the air inlet pipe (2), air-permeable nets (74) are fixedly mounted on both sides of the placement box (72), a placement opening (73) is opened at the top of the placement box (72), a flange (75) is fixedly mounted on the end of the placement box (72), and the flange (75) is bolted to the mounting seat (71).

Images