Novel heater for natural gas pipeline network director

Abstract

The utility model relates to the technical field of natural gas pipe networks, and discloses a novel heater for a natural gas pipe network director, which comprises a heater main body, a heat exchanger, a nozzle, a high-pressure air inlet and an exhaust valve, the heater main body is provided with an air inlet cavity, a heating cavity and a heat exchange cavity, and pipe network high-pressure air enters the nozzle through the high-pressure air inlet. The gas is further pressurized under the action of the nozzle, rotates at a high speed in the tangential direction of the inner wall of the gas inlet cavity and enters the heating cavity, the gas rotates and flows at a high speed, the gas collides and rubs with the inner wall of the heating cavity, heat is generated, the temperature of the heating cavity is increased, and the heat of the heating cavity is transmitted to the two heat exchange cavities through the heat exchanger. The to-be-heated gas in the pipe network achieves the purpose of regulating and controlling the temperature of the gas entering the director by controlling the two groups of gas inlet and outlet ball valves. High-pressure gas at the inlet of the gas pipe network is utilized to generate heat for heating, the installation is simple, an external heating source is not needed, and the energy-saving effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pipeline network, and more specifically, to a new type of heater for a natural gas pipeline network controller. Background Technology

[0002] In the gas transmission network, due to the low ambient temperature and the presence of a certain amount of water in the gas, if the medium temperature is lower than the dew point temperature, the gas pressure regulator controller will be blocked by ice, causing the regulator to stop working and affecting the gas supply. The usual solution is to heat the signal feedback tube and controller of the pressure regulator. The conventional heating method is electric heating tape or electric heater, which has the following defects: (1) External energy is required; (2) Conventional heaters generally have only one inlet and outlet and cannot adjust the outlet temperature. This makes the heater unsuitable when the ambient temperature is high or low. For example, in winter when the ambient temperature is low, a higher heating temperature is required, while in summer when the ambient temperature is high, a lower heating temperature is required. If the temperature is too high after heating, the internal seal of the controller will be loose, causing equipment failure. Contents of utility model

[0003] The utility model discloses a novel heater for a natural gas pipeline controller, which is used to solve the problem that the heaters in the above-mentioned prior art all require external energy and cannot adjust the outlet gas temperature.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A new type of heater for a natural gas pipe network controller includes a heater body, a closed heating chamber is arranged in the heater body, a heat exchanger is arranged on the outer wall of the heating chamber, the lower part of the heating chamber is connected with an air inlet chamber, a nozzle is arranged on the air inlet chamber, a high-pressure air inlet connected with the nozzle and an exhaust port connected with the air inlet chamber are arranged on the heater body, and an exhaust ball valve is arranged on the exhaust port;

[0006] The heat exchanger is provided with a horizontal plate to separate the cavity of the heater body into a high-heat cavity and a low-heat cavity, and a group of air inlets and air outlets are respectively provided on the cavity walls of the high-heat cavity and the low-heat cavity.

[0007] Furthermore, the air inlet and the air outlet include air inlet 1, air inlet 2, air outlet 2, and air outlet 1, all of which are connected to the pipe network through a ball valve.

[0008] Furthermore, a pressure regulator is installed on the gas pipeline network, and a pilot is connected to the downstream pipeline network of the pressure regulator through a branch line;

[0009] The high-pressure air inlet, air inlet 1, and air inlet 2 of the heater merge into one path and are connected to the upstream pipe network of the pressure regulator. The second air outlet and the first air outlet of the heater merge into one path and are connected to the pilot valve. The exhaust port of the heater is connected to the downstream pipe network of the pressure regulator through an exhaust ball valve, and a branch is provided on the pilot valve and connected to the pressure regulator.

[0010] Compared with the prior art, the beneficial technical effects brought by the present utility model are as follows:

[0011] 1. For the pilot valve heater of the present application, it uses the high-pressure gas at the inlet of the gas pipeline network to generate heat for heating. It is simply installed and can heat the air inlet of the pilot valve of the pressure regulator without any external energy, preventing ice blockage of the pilot valve. It has a simple structure and low manufacturing cost.

[0012] 2. For the pilot valve heater of the present application, two air inlets and outlets for the gas to be heated are set using its own temperature difference, and the on-off control of the ball valve installed on the gas pipeline is used to assist in controlling the heating temperature of the gas to be heated. When the ambient temperature is very low, air inlet 1 and air outlet 1 can be selected to be opened for use, or both paths can be fully opened. When the ambient temperature rises, air inlet 2 and air outlet 2 are selected to be opened for use, and air inlet 1 and air outlet 1 are closed, so that the temperature entering the pilot valve will not be too high to damage the pilot valve, realizing the protection of the pilot valve and enhancing the practicability of the device. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the pilot valve heater of the present application.

[0014] Figure 2 It is a schematic diagram of the installation and use state of the present application in the pipe network.

[0015] In the figure: 1. Heater body, 2. Heat exchanger, 3. Nozzle, 4. High-pressure air inlet, 5. Air inlet 1, 6. Air inlet 2, 7. Second air outlet, 8. First air outlet, 9. Exhaust ball valve, 10. Air inlet chamber, 11. Heating chamber, 12. Low-temperature chamber, 13. High-temperature chamber, 14. Gas pipeline network, 15. Pressure regulator, 16. Pilot valve, 17. Inlet ball valve 1, 18. Inlet ball valve 2, 19. Outlet ball valve 2, 20. Outlet ball valve 1. Detailed Embodiments

[0016] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0017] As a preferred embodiment of the present utility model, referring to Figure 1 、 Figure 2 , this embodiment discloses:

[0018] A new type of heater for a natural gas pipeline network commander, including a heating main body 1, a heat exchanger 2, a nozzle 3, a high-pressure air inlet 4, and an exhaust valve 9. There are three chambers in the heating main body 1, namely an air inlet chamber 10, a heating chamber 11, and a heat exchange chamber. Outside the heat exchange chamber, there are two groups of air inlet and outlet interfaces: an air inlet one 5, an air inlet two 6, an air outlet two 7, and an air outlet one 8. The nozzle 3 is installed deep into the air inlet chamber 10 of the commander heater, and the high-pressure air inlet 4 is installed on the heating main body 1 and connected to the nozzle 3. The heat exchanger 2 is sleeved outside the heating chamber 11 of the heater main body 1 and divides the heat exchange chamber of the heating main body 1 into a low-temperature heat chamber 12 and a high-temperature heat chamber 13, and there is a group of air inlet and outlet ports on the high and low heat chambers respectively.

[0019] The air inlet chamber 10 is connected to the heating chamber 11 and connected to the high-pressure air inlet 4 through the nozzle 3, and is isolated from the heat exchange chamber.

[0020] The heat exchanger 2 is made of a material with high thermal conductivity, and its structure is a spiral fin type, with a large heat exchange area, and can quickly heat the gas to be heated.

[0021] The high-pressure air inlet 4, the air inlet 5 one, and the air inlet two 6 merge into one path and are connected to the upstream pipeline network of the pressure regulator 15. The air outlet two 7 and the air outlet one 8 merge into one path and are connected to the commander 16. The exhaust port is connected to the downstream pipeline network of the pressure regulator 15 through the exhaust ball valve 9. There is a branch on the commander 16 connected to the pressure regulator.

[0022] The working process of the present utility model is as follows: The high-pressure gas at the inlet of the gas pipeline network 14 enters the nozzle 3 through the high-pressure air inlet 4, and then enters the air inlet chamber 10 through the nozzle 3. Under the action of the nozzle 3, the high-pressure gas is further pressurized and rotates at high speed along the tangential direction of the inner wall of the air inlet chamber 10, and enters the heating chamber 11. The gas rotates and flows at high speed, and the gas collides and rubs with the gas and the inner wall of the heating chamber 11 to generate heat, causing the temperature of the heating chamber 11 to rise. The heat energy is exported to the high-temperature heat chamber 13 and the low-temperature heat chamber 12 through the heat exchanger 2 placed on the outer wall of the heating chamber 11. The gas to be heated in the gas pipeline network 14 enters the high-temperature heat chamber 13 and the low-temperature heat chamber 12 through the inlet ball valve one 17 and the inlet ball valve two 18 respectively from the air inlet one 5 and the air inlet two 6 of the commander heater for temperature rise. The heated gas flows out through the air outlet one 8 and the air outlet two 7 respectively and merges into one path through the outlet ball valve one 20 and the outlet ball valve two 19 and enters the commander 16 of the pressure regulator 15. The high-pressure gas in the heating chamber 11 has its temperature reduced after heat exchange and is discharged to the downstream pipeline network through the exhaust valve 9 in the air inlet chamber 10. During this process, the outlet temperature can be regulated by controlling the switch combination of the inlet ball valve one 17, the inlet ball valve two 18, the outlet ball valve one 20, and the outlet ball valve two 19 according to the actual required temperature of the commander 16, so as to protect the commander, enable the pressure regulator to work properly, and ensure the normal operation of the pipeline network.

[0023] The content not described in detail in the above specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of heater for a natural gas pipeline network controller, characterized in that: The heater body (1) comprises a closed heating chamber (11) arranged in the heater body (1), a heat exchanger (2) is sleeved on the outer wall of the heating chamber (11), the lower part of the heating chamber (11) is connected to an air inlet chamber (10), a nozzle (3) is arranged on the air inlet chamber (10), the heater body (1) is provided with a high-pressure air inlet (4) connected to the nozzle (3) and an exhaust port connected to the air inlet chamber (10), and an exhaust ball valve (9) is arranged on the exhaust port; The heat exchanger (2) is provided with a horizontal plate, which divides the cavity of the heater body (1) into a high-heat cavity (12) and a low-heat cavity (13); a group of air inlets and air outlets are respectively provided on the cavity walls of the high-heat cavity (12) and the low-heat cavity (13).

2. The novel natural gas pipeline network pilot heater according to claim 1 is characterized in that: The air inlet and the air outlet include air inlet 1 (5), air inlet 2 (6), air outlet 2 (7), and air outlet 1 (8), all of which are connected to the pipe network through ball valves.

3. The novel heater for natural gas pipeline network controller according to claim 2 is characterized in that: A pressure regulator (15) is installed on the gas pipe network (14), and a controller (16) is connected to the downstream pipe network of the pressure regulator (15) through a branch line; The high-pressure air inlet (4), air inlet 1 (5), and air inlet 2 (6) of the heater are combined into one path and connected to the upstream pipe network of the pressure regulator (15); the air outlet 2 (7) and air outlet 1 (8) of the heater are combined into one path and connected to the controller (16); the exhaust port of the heater is connected to the downstream pipe network of the pressure regulator (15) via an exhaust ball valve (9); and a branch is provided on the controller (16) and connected to the pressure regulator (15).

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