Intelligent pressure regulator with automatic gas leakage cut-off function

Abstract

The present invention relates to the field of gas. An intelligent pressure regulator with an automatic gas leakage cut-off function includes a hollow cavity, and an air inlet passage is connected to the upper part of the hollow cavity. A first movable plug and a first spring are provided in the air inlet passage. One end of the first spring is connected to the first movable plug, and the other end of the first spring abuts against a second side wall structure. A fifth opening is formed in the first movable plug; a second control passage is connected to the front section of the air inlet passage, and a second driving rod group is provided in the second control passage. The lower part of the rod located at the bottom of the second driving rod group is in an inclined shape and is inserted into the fifth opening. When the gas detector detects gas leakage, the rod located at the bottom of the second driving rod group moves downward, driving the first movable plug to abut against the first side wall structure to complete the cut-off of the air inlet passage.

Description

Technical Field

[0001] The present invention relates to the field of gas, and particularly to a gas pressure regulator. Background Art

[0002] Existing gas pressure regulators only have the function of regulating pressure and do not have the function of detecting gas leakage. Therefore, a gas pressure regulator and a gas leakage detector need to be installed separately on the gas pipeline, resulting in the following problems:

[0003] 1. There may be insufficient installation space, resulting in the inability to install one of them.

[0004] 2. There are more pipe joints, and gas leakage is likely to occur later.

[0005] 3. The two components are produced and installed separately, resulting in a relatively high overall cost.

[0006] 4. The two components cannot be linked in time, resulting in a lag in the action of cutting off the gas pipeline when gas leakage occurs. Summary of the Invention

[0007] The purpose of the present invention is to provide an intelligent pressure regulator with an automatic gas leakage cut-off function to solve the above technical problems.

[0008] The technical problems solved by the present invention can be achieved by the following technical solutions:

[0009] An intelligent pressure regulator with an automatic gas leakage cut-off function, including a gas detection sensor and a gas pressure regulator. The gas pressure regulator includes a hollow cavity, and an elastic diaphragm is arranged in the hollow cavity. The upper part of the hollow cavity is provided with a first opening, a second opening, and a third opening. The first opening is connected to an intake passage, the second opening is connected to an outlet passage, the third opening is connected to a first control passage, and a first driving rod group is arranged in the first control passage. The lower part of the first driving rod group is connected to the elastic diaphragm.

[0010] The inner diameter of the front section of the intake passage is larger than the inner diameter of the middle section of the intake passage, so as to form a first side wall structure in the intake passage.

[0011] The inner diameter of the middle section of the intake passage is larger than the inner diameter of the rear section of the intake passage, so as to form a second side wall structure in the intake passage.

[0012] A first movable plug and a first spring are arranged in the intake passage. The first movable plug is located in the front section of the intake passage. One end of the first spring is connected to the first movable plug, and the other end of the first spring abuts against the second side wall structure. A fifth opening is provided on the first movable plug.

[0013] A fourth opening is formed in the front section of the intake passage. The fourth opening is connected to a second control passage. A second drive rod group is provided in the second control passage. The lower part of the rod at the bottom of the second drive rod group is beveled and inserted into the fifth opening.

[0014] The gas detection sensor is fixed on the gas pressure regulator. A drive motor is fixed outside the second control passage. The signal output end of the gas detection sensor is connected to the signal input end of the drive motor. The drive motor drives the rod at the bottom of the second drive rod group to move up and down.

[0015] In use, the position of the elastic diaphragm can be adjusted by the first drive rod group for pressure regulation, and the gas leakage can be detected in real time by the gas detector. More importantly, when the gas detector detects gas leakage, the drive motor drives the rod at the bottom of the second drive rod group to move downward. As the lower part of the rod at the bottom is continuously inserted, the first movable plug moves towards the first side wall structure until the first movable plug abuts against the first side wall structure, completing the cut-off of the intake passage. When the gas leakage fault is eliminated, the drive motor can be manually controlled to rotate in the reverse direction, causing the rod at the bottom of the second drive rod group to continuously rise. As the rod at the bottom rises, the first movable plug leaves the first side wall structure under the action of the first spring, opening the intake passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a partial structural sectional view of a structure of the present invention;

[0017] Figure 2 is a partial structural sectional view of another structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below with reference to specific illustrations.

[0019] Refer to Figure 1 and Figure 2, an intelligent pressure regulator with an automatic gas leakage cut-off function, includes a gas detection sensor and a gas pressure regulator. The gas pressure regulator includes a hollow cavity, and an elastic diaphragm 3 is installed in the hollow cavity. A first opening, a second opening, and a third opening are formed in the upper part of the hollow cavity. The first opening is connected to an intake passage 2, the second opening is connected to an outlet passage 1, and the third opening is connected to a first control passage. A first driving rod group 4 is arranged in the first control passage, and the lower part of the first driving rod group 4 is connected to the elastic diaphragm 3. The inner diameter of the front section of the intake passage is larger than that of the middle section of the intake passage, so as to form a first side wall structure in the intake passage. The inner diameter of the middle section of the intake passage is larger than that of the rear section of the intake passage, so as to form a second side wall structure in the intake passage.

[0020] A first movable plug 5 and a first spring 8 are arranged in the intake passage. The first movable plug 5 is located in the front section of the intake passage. One end of the first spring 8 is connected to the first movable plug 5, and the other end of the first spring 8 abuts against the second side wall structure. A fifth opening 7 is formed in the first movable plug 5. A fourth opening is formed in the front section of the intake passage, and the fourth opening is connected to a second control passage. A second driving rod group 6 is arranged in the second control passage. The lower part of the rod at the lowest position in the second driving rod group 6 is in an inclined shape and is inserted into the fifth opening 7. The gas detection sensor is fixed on the gas pressure regulator, and a driving motor is fixed outside the second control passage. The signal output end of the gas detection sensor is connected to the signal input end of the driving motor, and the driving motor drives the rod at the lowest position in the second driving rod group 6 to move up and down.

[0021] During use, the position of the elastic diaphragm can be adjusted through the first driving rod group to regulate the pressure, and the gas leakage situation can be detected in real time through the gas detector. More importantly, when the gas detector detects gas leakage, the driving motor drives the rod at the lowest position in the second driving rod group to move downward. As the lower part of the rod at the lowest position is continuously inserted, the first movable plug moves towards the first side wall structure until the first movable plug abuts against the first side wall structure, completing the cut-off of the intake passage. When the gas leakage fault is eliminated, the driving motor can be manually controlled to rotate in the reverse direction, so that the rod at the lowest position in the second driving rod group continuously rises. As the rod at the lowest position rises, the first movable plug leaves the first side wall structure under the action of the first spring, opening the intake passage.

[0022] Figure 1 and Figure 2 The difference lies in that Figure 2The structure therein is additionally provided with a push rod 9, a connecting seat, and a lever 10. One end of the push rod 9 is connected to the first movable plug, and the other end of the push rod 9 is connected to the connecting seat. The first end of the lever 10 is inserted into the first connection hole on the connecting seat, the second end of the lever 10 is inserted into the second connection hole on the first driving rod group, and the fulcrum of the lever 10 abuts against the cavity wall of the hollow cavity. When the first movable plug moves in the direction of the first side wall structure, the first movable plug pushes the push rod to move in the direction of the hollow cavity, and the connecting seat follows the first movable plug to move in the direction of the center of the hollow cavity, causing the lever to rotate counterclockwise around the fulcrum, so that the position of the second end on the lever rises. The rising second end drives the first driving rod group to rise, and further causes the elastic diaphragm to rise, reducing the space area above the elastic diaphragm. When the first movable plug moves in the opposite direction, the lever rotates clockwise, and the elastic diaphragm descends, increasing the space area above the elastic diaphragm. Therefore Figure 2 the structure therein allows remote pressure regulation through a driving motor. Compared with Figure 1 the structure with only manual pressure regulation, it is more intelligent. The push rod is preferably sleeved in the first spring, the connecting seat is preferably located in the hollow cavity, and the lever preferably has an inverted "7" shape. Under the structure of Figure 2 it is allowed not to provide the first spring, and the second driving rod group is used to manually reset the first movable plug.

[0023] A end cap is sleeved outside the second control channel. The inner diameter of the second control channel first remains unchanged from top to bottom, then gradually increases, then remains unchanged, then suddenly decreases, and then remains unchanged, thereby forming a first accommodation cavity with an upward opening, a second accommodation cavity with a downward opening, and a third accommodation cavity connecting the first accommodation cavity and the second accommodation cavity in the second control channel. A third spring is arranged in the first accommodation cavity. The top of the third spring abuts against the top of the end cap, and the bottom of the third spring abuts against the bottom of the first accommodation cavity. The second driving rod group includes an upper rod and a lower rod. The outer diameter of the upper rod is smaller than that of the lower rod, and the outer diameter of the lower rod is larger than the inner diameter of the third accommodation cavity. The lower rod is located in the second accommodation cavity, the upper rod is connected to the lower rod, the upper rod passes through the third accommodation cavity and enters the first accommodation cavity, and the top of the upper rod is connected to the top of the end cap. When the end cap moves up and down, it drives the second driving rod group to move up and down.

[0024] The central axis of the fourth opening is preferably parallel to the central axis of the first opening and on the same side of the hollow cavity. The driving motor is fixed between the first control channel and the second control channel. An eccentric wheel is connected to the rotating shaft of the driving motor, and the eccentric wheel abuts against the end cap. Thus, by the rotation of the eccentric wheel, the position of the end cap is changed. An outer shell is sleeved outside the driving motor, and a gas detection sensor is also arranged in the outer shell. A ventilation hole is opened on the outer shell at a position corresponding to the sensitive element of the gas detection sensor. The present invention places the driving motor and the gas detection sensor in the same outer shell, and can realize the simultaneous installation of the two.

[0025] Preferably, a lower retaining ring in a circular shape is provided below the outer shell. The lower retaining ring is snap-fitted onto the intake passage. On one side of the outer shell, a side retaining ring in a circular shape is provided, and the side retaining ring is snap-fitted onto any one of the first control passage or the second control passage. Thus, the fixation of the outer shell is realized. The present invention adopts a modular design, enabling the electrical control part (driving motor, gas detection sensor) and the mechanical part (intake passage and the mechanical components therein, outlet passage and the mechanical components therein, hollow cavity and the mechanical components therein) to be produced and transported separately. This is not only beneficial to installation and maintenance, but also conducive to cost reduction and product quality improvement. Both the lower retaining ring and the side retaining ring can adopt a flange structure with an openable part. Alternatively, the lower retaining ring and the side retaining ring are themselves in an open-ring shape. The lower retaining ring and the side retaining ring are provided with flanges. During installation, by means of the flange pressing on the flange, the position of the retaining ring is restricted, and thus the position of the outer shell is restricted.

[0026] The eccentric wheel is preferably located outside the outer shell. A cover for covering the eccentric wheel can be provided on the outer shell to prevent problems such as dust accumulation and bumping caused by the exposure of the eccentric wheel. The cover is provided with an opening at a position corresponding to the end cap to allow the end cap to be inserted.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent pressure regulator with an automatic gas leakage cut-off function, comprising a gas detection sensor and a gas pressure regulator. The gas pressure regulator includes a hollow cavity, and an elastic diaphragm is installed in the hollow cavity; It is characterized in that The upper part of the hollow cavity is provided with a first opening, a second opening and a third opening. The first opening is connected to an intake channel, the second opening is connected to an outlet channel, and the third opening is connected to a first control channel. A first driving rod group is arranged in the first control channel, and the lower part of the first driving rod group is connected to the elastic diaphragm; The inner diameter of the front section of the intake channel is larger than that of the middle section of the intake channel, so as to form a first side wall structure in the intake channel; The inner diameter of the middle section of the intake channel is larger than that of the rear section of the intake channel, so as to form a second side wall structure in the intake channel; A first movable plug and a first spring are arranged in the intake channel. The first movable plug is located in the front section of the intake channel. One end of the first spring is connected to the first movable plug, and the other end of the first spring abuts against the second side wall structure. A fifth opening is formed in the first movable plug; A fourth opening is formed in the front section of the intake channel, and the fourth opening is connected to a second control channel. A second driving rod group is arranged in the second control channel, and the lower part of the rod located at the bottom of the second driving rod group is beveled and inserted into the fifth opening; The gas detection sensor is fixed on the gas pressure regulator, a driving motor is fixed outside the second control channel, the signal output end of the gas detection sensor is connected to the signal input end of the driving motor, and the driving motor drives the rod located at the bottom of the second driving rod group to move up and down; It further includes a push-pull rod, a connecting seat and a lever. The connecting seat and the lever are both located in the hollow cavity, and the lever is in the shape of an inverted "7"; One end of the push-pull rod is connected to the first movable plug, the other end of the push-pull rod is connected to the connecting seat, the first end of the lever is inserted into a first connection hole on the connecting seat, the second end of the lever is inserted into a second connection hole on the first driving rod group, and the fulcrum of the lever abuts against the cavity wall of the hollow cavity.

2. The intelligent pressure regulator with an automatic gas leakage cut-off function according to claim 1, characterized in that, The push-pull rod is sleeved in the first spring.

3. The intelligent pressure regulator with an automatic gas leakage cut-off function according to claim 1 or 2, characterized in that A end cap is sleeved outside the second control channel. The inner diameter of the second control channel first remains unchanged, then gradually increases, then remains unchanged, then suddenly decreases, and then remains unchanged from top to bottom, so as to form a first accommodation cavity with an upward opening, a second accommodation cavity with a downward opening, and a third accommodation cavity connecting the first accommodation cavity and the second accommodation cavity in the second control channel; A third spring is arranged in the first accommodation cavity. The top of the third spring abuts against the top of the end cap, and the bottom of the third spring abuts against the bottom of the first accommodation cavity; The second driving rod group includes an upper rod and a lower rod. The outer diameter of the upper rod is smaller than that of the lower rod. The outer diameter of the lower rod is larger than the inner diameter of the third accommodating cavity. The lower rod is located in the second accommodating cavity. The upper rod is connected to the lower rod. The upper rod passes through the third accommodating cavity and enters the first accommodating cavity. The top of the upper rod is connected to the top of the end cap.

4. The intelligent pressure regulator with an automatic gas leakage cut-off function according to claim 3, characterized in that, The central axis of the fourth opening is parallel to the central axis of the first opening and is located on the same side of the hollow cavity.

5. The intelligent pressure regulator with an automatic gas leakage cut-off function according to claim 4, characterized in that The driving motor is fixed between the first control channel and the second control channel. An eccentric wheel is connected to the rotating shaft of the driving motor. The eccentric wheel abuts against the end cap.

6. The intelligent pressure regulator with an automatic gas leakage cut-off function according to claim 5, characterized in that The driving motor is sleeved with a housing. The gas detection sensor is also arranged in the housing. A ventilation hole is formed in the housing at a position corresponding to the sensitive element of the gas detection sensor.

7. The intelligent pressure regulator with an automatic gas leakage cut-off function according to claim 6, characterized in that, A circular lower retaining ring is arranged below the housing. The lower retaining ring is clamped on the air inlet channel. A circular side retaining ring is arranged on one side of the housing. The side retaining ring is clamped on any one of the first control channel or the second control channel.

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