Valve port opening degree sensing device of EZR type gas pressure regulator

Abstract

The utility model relates to the technical field of natural gas transmission and distribution, in particular to a valve opening degree sensing device of an EZR type gas pressure regulator, which comprises a valve body, a valve cover is arranged at the top of the valve body, a mechanical indicator fixing seat is in threaded connection in the valve cover, and a sensor mounting seat and a sensor protective shell are mounted on the mechanical indicator fixing seat in a threaded manner. The sensor mounting seat is in threaded connection with a sensor body; a valve position indication connecting rod is arranged in the mechanical indicator fixing seat, the top end of the valve position indication connecting rod is connected with the bottom of the sensor body, and a valve opening degree indicator is installed at the top end of the valve position indication connecting rod through a sensor T-shaped head. The EZR type pressure regulator can be directly installed on a gas equipment valve body without equipment transformation, the valve opening degree of the EZR type pressure regulator is converted into a 4-20 ma analog quantity signal through the displacement sensor, the analog quantity signal is transmitted to a field or a remote server, and therefore the operation condition of the gas pressure regulator is monitored in real time, and abnormity and fault emergency treatment are found in time.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas transmission and distribution, in particular to a valve opening sensor device for an EZR type gas pressure regulator. Background Art

[0002] With the continuous development of Internet of Things technology, its application in the gas industry is gradually becoming popular. By setting pressure, temperature, flow, gas leakage and other sensors on the system nodes, real-time monitoring of the operating data of the gas transmission and distribution system can be achieved, and vertical data query can be performed. Instructions can also be issued to switch or adjust the gas transmission and distribution system through output control devices such as electric ball valves and flow control valves, so as to deal with abnormal situations in a timely manner and ensure the safety of gas transmission and distribution.

[0003] The gas industry has been developing for many years. The core gas pressure regulating equipment, as a kind of equipment for controlling and regulating downstream pressure, is mature, stable and reliable. As a traditional mechanical pressure regulating equipment, the gas pressure regulating equipment needs to add corresponding sensors to its own structure to realize the Internet of Things transformation, and convert the changes in the working status of the equipment into electrical signals for transmission. Fisher brand gas under Emerson entered the Chinese market first. Among them, EZR type gas equipment has been widely used in a series of imported brand equipment due to its cost-effectiveness. The existing EZR type gas pressure regulating equipment only provides a mechanical display function of the valve position opening. In order to realize the Internet of Things of equipment, it is necessary to transform it according to its structure and install signal sensors to convert the mechanical valve position change information into electrical signals for transmission, which is inconvenient. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the existing EZR type gas pressure regulating equipment only provides a mechanical display function of the valve position opening. In order to realize the Internet of Things of equipment, it is necessary to modify it according to its structure and install a signal sensor to convert the mechanical valve position change information into an electrical signal for transmission, which is relatively inconvenient. Therefore, a valve opening sensor device for an EZR type gas pressure regulator is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A valve opening sensing device for an EZR type gas pressure regulator comprises a valve body, a valve cover is provided on the top of the valve body, a mechanical indicator fixing seat is internally threadedly connected to the valve cover, a sensor mounting seat and a sensor protection shell are threadedly installed on the top of the mechanical indicator fixing seat, the sensor protection shell covers the sensor mounting seat, a sensor body is threadedly connected to the top of the sensor mounting seat, and an explosion-proof component is provided on the top of the sensor protection shell;

[0007] A valve position indicating connecting rod is arranged in the mechanical indicator fixing seat, the top end of the valve position indicating connecting rod is connected to the bottom of the sensor body, a telescopic component for self-resetting is sleeved on the valve position indicating connecting rod, and a valve opening indicator mark is installed on the top end of the valve position indicating connecting rod through the sensor T-head.

[0008] Preferably, the explosion-proof component comprises an explosion-proof flexible tube, and the explosion-proof flexible tube is threadedly connected to the top of the sensor protective shell.

[0009] Preferably, the telescopic component includes two compression springs both mounted on the valve position indicating connecting rod, wherein the two ends of one of the compression springs are respectively connected to the lower surface of the mechanical indicator fixing seat and the bottom end surface of the valve position indicating connecting rod, and the two ends of the other compression spring are respectively connected to the sensor T-head and the sensor body.

[0010] Preferably, a valve cage seat is provided in the valve body, a valve port pad diaphragm is provided on the top of the valve cage seat, a piston is provided at the bottom of the valve position indicating connecting rod, a pressure pad is provided at the bottom of the valve port pad diaphragm, the pressure pad and the piston are fixedly connected to the valve port pad diaphragm by bolts, and a valve port opening is formed between the top of the valve cage seat and the lower surface of the valve port pad diaphragm.

[0011] Preferably, an observation window is provided on the surface of the sensor protection shell, and scale lines are provided on the side of the observation window.

[0012] Preferably, the outer cover of the sensor protection shell is provided with an acrylic sheath, the acrylic sheath is made of a transparent material and is sealed and connected to the sensor protection shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Adding a valve opening sensor does not require any equipment modification and can be directly installed on the gas equipment valve body. The EZR type pressure regulator valve opening is converted into a 4-20ma analog signal through a displacement sensor and transmitted to the on-site or remote server, thereby monitoring the operating status of the gas pressure regulator in real time and promptly discovering abnormalities and handling faults urgently. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front cross-sectional structural schematic diagram of a valve port opening sensing device for an EZR type gas pressure regulator proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of a valve body in a valve port opening sensing device of an EZR type gas pressure regulator proposed by the utility model;

[0017] Figure 3This is a schematic diagram of the front cross-sectional structure of a sensor device in a valve port opening sensor device of an EZR type gas pressure regulator proposed by the utility model;

[0018] Figure 4 The utility model discloses a front structural schematic diagram of a sensor device in a valve opening sensor device of an EZR type gas pressure regulator.

[0019] In the figure: 1 mechanical indicator fixing seat, 2 sensor mounting seat, 3 sensor body, 4 sensor protection shell, 5 explosion-proof flexible tube, 6 compression spring, 7 valve position indicating rod, 8 valve body, 9 valve cover, 10 valve port opening indicator, 11 sensor T-head, 12 valve cage seat, 13 valve port gasket diaphragm, 14 piston, 15 compression gasket, 16 bolt, 17 valve port opening, 18 observation window, 19 acrylic sheath. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0022] Reference Figure 1-Figure 4 A valve opening sensing device for an EZR type gas pressure regulator comprises a valve body 8, a valve cover 9 is arranged on the top of the valve body 8, a mechanical indicator fixing seat 1 is threadedly connected to the valve cover 9, a sensor mounting seat 2 and a sensor protection shell 4 are threadedly installed on the top of the mechanical indicator fixing seat 1, the sensor protection shell 4 covers the sensor mounting seat 2, a sensor body 3 is threadedly connected to the top of the sensor mounting seat 2, a valve cage seat 12 is arranged in the valve body 8, a valve port gasket diaphragm 13 is arranged on the top of the valve cage seat 12, and a valve position indicating connecting rod 7 is arranged at the bottom of the valve body 8. A piston 14 is provided at the bottom, a compression pad 15 is provided at the bottom of the valve port pad diaphragm 13, the compression pad 15 and the piston 14 are fixedly connected to the valve port pad diaphragm 13 by bolts 16, a valve port opening 17 is formed between the top of the valve cage seat 12 and the lower surface of the valve port pad diaphragm 13, an explosion-proof component is provided at the top of the sensor protection shell 4, the explosion-proof component includes an explosion-proof flexible tube 5, the explosion-proof flexible tube 5 is threadedly connected to the top of the sensor protection shell 4, and the explosion-proof flexible tube 5 has the advantages of flame resistance, corrosion resistance, water resistance, aging resistance, and firm structure;

[0023] A valve position indicating connecting rod 7 is arranged in the mechanical indicator fixing seat 1, and the top end of the valve position indicating connecting rod 7 is connected to the bottom of the sensor body 3. A telescopic component for self-reset is sleeved on the valve position indicating connecting rod 7, and the telescopic component includes two compression springs 6 both sleeved on the valve position indicating connecting rod 7, wherein the two ends of one compression spring 6 are respectively connected to the lower surface of the mechanical indicator fixing seat 1 and the bottom end surface of the valve position indicating connecting rod 7, and the two ends of the other compression spring 6 are respectively connected to the sensor T-shaped head 11 and the sensor body 3, and the top end of the valve position indicating connecting rod 7 is installed with a valve opening indicator 10 through the sensor T-shaped head 11;

[0024] The upstream high-pressure gas enters from the inlet of the valve body 8, flows through the valve cage seat 12, and then enters the downstream through the gap between the valve port pad diaphragm 13 and the valve cage seat 12. When there is no need for gas replenishment downstream, the valve port pad diaphragm 13 presses the valve cage seat 12, the valve port is completely sealed, the pressure regulating valve is in a closed state, and the gas cannot enter the downstream. When there is a need for gas replenishment downstream, the valve port pad diaphragm 13 leaves the valve cage seat 12, and the valve port opening distance is the valve port opening 17. The gas enters the downstream after throttling and stabilizing the pressure through the gap between the two. The larger the flow rate, the larger the valve port opening 17. The piston 14 and the compression pad 15 fixed together with the valve port pad diaphragm 13 by the bolt 16 can feedback the valve port opening 17. The valve position indicating connecting rod 7 is fixedly connected to the valve port opening indicator 10, and is tightly attached to the piston 14 through the compression spring 6, so that the valve port opening 17 can be indirectly fed back.

[0025] Use a self-resetting threaded displacement sensor with a spring, select the sensor T-head 11 to connect with the valve opening indicator 10, when the valve opening indicator 10 moves up and down, the valve opening 17 change information can be transmitted to the sensor body 3, and the sensor body 3 transmits the valve opening 17 to the server or PLC through the matching 4-20ma analog converter.

[0026] An observation window 18 is provided on the surface of the sensor protection shell 4, and a scale line is provided on the side of the observation window 18;

[0027] The up and down movement of the valve opening indicator 10 can be directly observed through the observation window 18, and the scale line can display the valve opening 17 information.

[0028] The outer cover of the sensor protection shell 4 is provided with an acrylic sheath 19, which is made of transparent material and is sealed and connected to the sensor protection shell 4;

[0029] The transparent acrylic sheath 19 is convenient for observing the operation of the valve opening indicator 10 and protecting against external dust and rain.

[0030] In the utility model, there is no need to modify the equipment, and it can be directly installed on the valve body 8 of the gas equipment. The EZR type pressure regulator valve opening 17 is converted into a 4-20ma analog signal through a displacement sensor and transmitted to the on-site or remote server, so as to monitor the operating status of the gas pressure regulator in real time and detect abnormalities and faults in time for emergency treatment.

[0031] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A valve opening sensing device for an EZR type gas pressure regulator, comprising a valve body (8), characterized in that: The top of the valve body (8) is provided with a valve cover (9), the valve cover (9) is internally threadedly connected to a mechanical indicator fixing seat (1), the top of the mechanical indicator fixing seat (1) is threadedly mounted with a sensor mounting seat (2) and a sensor protection shell (4), the sensor protection shell (4) covers the sensor mounting seat (2), the top of the sensor mounting seat (2) is threadedly connected to a sensor body (3), and the top of the sensor protection shell (4) is provided with an explosion-proof component; A valve position indicating connecting rod (7) is arranged in the mechanical indicator fixing seat (1), the top end of the valve position indicating connecting rod (7) is connected to the bottom end of the sensor body (3), a telescopic component for self-resetting is sleeved on the valve position indicating connecting rod (7), and a valve opening indicator mark (10) is installed on the top end of the valve position indicating connecting rod (7) through a sensor T-shaped head (11).

2. The valve opening sensing device of an EZR type gas pressure regulator according to claim 1 is characterized in that: The explosion-proof component comprises an explosion-proof flexible tube (5), and the explosion-proof flexible tube (5) is threadedly connected to the top of the sensor protection shell (4).

3. The valve opening sensing device of an EZR type gas pressure regulator according to claim 1, characterized in that: The telescopic component comprises two compression springs (6) both of which are sleeved on the valve position indicating connecting rod (7), wherein the two ends of one of the compression springs (6) are respectively connected to the lower surface of the mechanical indicator fixing seat (1) and the bottom end surface of the valve position indicating connecting rod (7), and the two ends of the other compression spring (6) are respectively connected to the sensor T-shaped head (11) and the sensor body (3).

4. The valve opening sensing device of an EZR type gas pressure regulator according to claim 1, characterized in that: A valve cage seat (12) is provided in the valve body (8), a valve port pad diaphragm (13) is provided on the top of the valve cage seat (12), a piston (14) is provided on the bottom of the valve position indicating connecting rod (7), a pressure pad (15) is provided on the bottom of the valve port pad diaphragm (13), the pressure pad (15) and the piston (14) are fixedly connected to the valve port pad diaphragm (13) by bolts (16), and a valve port opening (17) is formed between the top of the valve cage seat (12) and the lower surface of the valve port pad diaphragm (13).

5. The valve opening sensing device of an EZR type gas pressure regulator according to claim 1, characterized in that: An observation window (18) is provided on the surface of the sensor protection shell (4), and scale lines are provided on the side of the observation window (18).

6. The valve opening sensing device of an EZR type gas pressure regulator according to claim 1, characterized in that: The outer cover of the sensor protection shell (4) is provided with an acrylic sheath (19); the acrylic sheath (19) is made of a transparent material and is sealed and connected to the sensor protection shell (4).

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