Valve position remote transmission device of straight rod type pressure regulator

Abstract

The utility model relates to the technical field of natural gas transportation and distribution, in particular to a valve position remote transmission device of a straight rod type pressure regulator, which comprises a valve body and a valve rod, the valve body further comprises an upper membrane shell and a lower membrane shell, a membrane is arranged in the upper membrane shell, and a main regulation bearing disc is arranged on the membrane; a valve port is formed in the valve body, a valve port pad is installed below the main adjusting force bearing disc, a sensing assembly is installed on the upper membrane shell and comprises a displacement sensor, a scale and a knurled high nut, the knurled high nut is attached to the surface of the main adjusting force bearing disc, the lower end of the scale is connected with the knurled high nut, and the lower end of the scale is connected with the knurled high nut. And a scaleplate reset spring is mounted on the scaleplate. According to the utility model, the opening degree of the valve port is displayed and converted into an electric signal for remote transmission, so that the remote transmission of the opening degree of the valve port can be realized in the use process of the pressure regulator, and the installation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas transmission and distribution, in particular to a valve position remote transmission device for a straight rod type pressure regulator. Background Art

[0002] With the continuous development of society and the continuous progress of technology, the technologies related to natural gas transmission and distribution are also constantly improving. A pressure regulator is a special valve on a pipeline, which is a device that automatically adjusts the outlet pressure to make it stable within a certain pressure range.

[0003] The opening degree of the valve port on the straight rod type pressure regulator can be changed according to the actual usage situation. At present, during the use of the straight rod type pressure regulator, the opening and closing degree of the valve port cannot be known, which is not conducive to the use of the straight rod type pressure regulator. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the following disadvantages in the prior art: the opening degree of the valve port on the straight rod type pressure regulator can be changed according to the actual usage situation. At present, during the use of the straight rod type pressure regulator, the opening and closing degree of the valve port cannot be known, which is not conducive to the use of the straight rod type pressure regulator. Therefore, a valve position remote transmission device for a straight rod type pressure regulator is proposed.

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

[0006] A valve position remote transmission device for a straight rod type pressure regulator, including a valve body and a valve rod. The valve body further includes an upper diaphragm housing and a lower diaphragm housing. A diaphragm is installed inside the upper diaphragm housing, and a main adjustment bearing plate is installed on the diaphragm.

[0007] A valve port is opened on the valve body. A valve port gasket is installed below the main adjustment bearing plate. A sensing assembly is installed on the upper diaphragm housing. The sensing assembly includes a displacement sensor, a scale, and a knurled high nut. The knurled high nut is in contact with the surface of the main adjustment bearing plate. The lower end of the scale is connected to the knurled high nut, and a scale return spring is installed on the scale.

[0008] Preferably, a sensor protection sleeve is sleeved outside the displacement sensor, and the sensor protection sleeve is arranged above the knurled high nut.

[0009] Preferably, a scale base is arranged below the sensor protection sleeve, and the scale base is connected to the displacement sensor through a scale bracket screw.

[0010] Preferably, an O-ring seal is arranged below the scale base, and the O-ring seal is arranged above the knurled high nut.

[0011] Preferably, an explosion-proof cable joint is provided inside the sensor protective sleeve, and the explosion-proof cable joint is arranged above the displacement sensor.

[0012] Preferably, the upper membrane housing is connected to the lower membrane housing by two bolts, and the two bolts are symmetrically arranged.

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

[0014] The opening degree is converted into an electrical signal inside the displacement sensor and then remotely transmitted, so that the opening and closing degree of the valve port can be known, which is beneficial to the use of the straight rod type voltage regulator, realizes the display of the valve port opening degree and the conversion into an electrical signal for long-distance transmission, enables the voltage regulator to remotely transmit the valve port opening degree during use, and is simple to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. 1 is a front structural schematic diagram of a valve position remote transmission device of a straight rod type voltage regulator proposed by the present utility model;

[0016] Figure 2 FIG. 2 is a front partial structural schematic diagram of a valve position remote transmission device of a straight rod type voltage regulator proposed by the present utility model;

[0017] Figure 3 FIG. 3 is a front structural schematic diagram of a displacement sensor and a sensor protective sleeve in the present utility model.

[0018] In the figure: 1 knurled high nut, 2 scale return spring, 3 scale, 4 O-ring, 5 scale seat, 6 scale frame screw, 7 displacement sensor, 8 sensor protective sleeve, 9 explosion-proof cable joint, 10 sensing component, 11 lower membrane housing, 12 valve port, 13 valve port gasket, 14 diaphragm, 15 main adjustment bearing disc, 16 upper membrane housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] 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 implementation of the present utility model. The change or adjustment of their relative relationship shall be regarded as the scope of implementation of the present utility model without substantial change in the technical content.

[0021] Refer to Figures 1 - 3, A valve position remote transmission device for a straight rod type voltage regulator, comprising a valve body and a valve stem. The valve body further includes an upper diaphragm housing 16 and a lower diaphragm housing 11. A diaphragm 14 is installed inside the upper diaphragm housing 16, and a main adjustment load-bearing disc 15 is installed on the diaphragm 14. A valve port 12 is provided on the valve body, and a valve port gasket 13 is installed below the main adjustment load-bearing disc 15. A sensing assembly 10 is installed on the upper diaphragm housing 16. The sensing assembly 10 includes a displacement sensor 7, a scale 3, and a knurled high nut 1 (wherein the displacement sensor 7 is a prior art, and its working principle will not be described in detail). The surface of the knurled high nut 1 is in contact with the main adjustment load-bearing disc 15. The lower end of the scale 3 is connected to the knurled high nut 1, and a scale return spring 2 is installed on the scale 3.

[0022] A sensor protection sleeve 8 is sleeved outside the displacement sensor 7. The sensor protection sleeve 8 is arranged above the knurled high nut 1. An explosion-proof cable joint 9 is arranged inside the sensor protection sleeve 8. The explosion-proof cable joint 9 is arranged above the displacement sensor 7. Adding the sensor protection sleeve 8 and the explosion-proof cable joint 9 for protecting the displacement sensor 7 strengthens the protection effect on the displacement sensor 7.

[0023] A scale base 5 is arranged below the sensor protection sleeve 8. The scale base 5 is connected to the displacement sensor 7 through a scale frame screw 6. The displacement sensor 7 is directly connected to the scale frame screw 6, which increases the installation stability of the displacement sensor 7. The indicated opening of the valve port 12 is accurate, and the position of the displacement sensor 7 is relatively fixed. When the equipment fails and needs to be disassembled and replaced, re-adjustment and installation are more rapid.

[0024] An O-ring seal 4 is arranged below the scale base 5. The O-ring seal 4 is arranged above the knurled high nut 1. The upper diaphragm housing 16 is connected to the lower diaphragm housing 11 through two bolts, and the two bolts are symmetrically arranged. Using bolts facilitates the connection of the upper diaphragm housing 16 and the lower diaphragm housing 11, can provide sufficient protection for the electrical components used, prevent rainwater intrusion, and make the overall voltage regulator cleaner and more beautiful.

[0025] Due to the requirements of the structure and installation method of the straight rod type voltage regulator, its local mechanical valve position indicating device needs to move together after being connected to the diaphragm 14 and the main adjustment load-bearing disc 15. According to this structure, the valve position displacement sensor 7 structure is now designed to be threadedly connected to its scale 3, so as to achieve synchronous movement and indicate the opening of the valve port 12.

[0026] Due to reasons such as the voltage regulator structure, the displacement sensor 7 of this structure is fixed outside the voltage regulator. At the position of the original local valve position indicating device, combining with the original components, the displacement sensor 7 and its supporting and protecting components are connected to the local indicating device components, so that the electronic components such as the displacement sensor 7 can adapt to the working environment of the voltage regulator and can operate stably for a long time, and the design cost is minimized to the greatest extent on the basis of achieving design protection.

[0027] In the present utility model, when the voltage regulator is in use, there is a certain amount of gas and pressure difference at both ends of the diaphragm 14 as the driving force of the voltage regulator product. When the pressure fluctuates, the pressure difference fluctuates accordingly. Furthermore, the diaphragm 14 on the voltage regulator will rise or fall with the change of the pressure difference. Due to the movement of the diaphragm 14, its pressure-bearing member, the main pressure-bearing disc 15, will move up and down, driving the valve port gasket 13 to move up and down to change the opening degree of the valve port 12, adjust the size of the intake air volume, balance the change of the pressure difference, and find a stable equilibrium state under the new pressure difference. The contact part of the displacement sensor 7 is pressed against the main pressure-bearing disc 15 under the elastic force of the scale reset spring 2. When the main pressure-bearing disc 15 moves, the contact of the displacement sensor 7 will move accordingly, and after being converted into an electrical signal inside the displacement sensor 7, it is remotely transmitted, so that the opening and closing degree of the valve port 12 can be known, which is beneficial to the use of the straight rod type voltage regulator.

[0028] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" and the like shall be understood in a broad sense.

[0029] The above is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitution or change, and should be covered within the protection scope of the present utility model.

Claims

1. A valve position remote transmission device for a straight rod type voltage regulator, comprising a valve body and a valve rod, characterized in that, The valve body further includes an upper diaphragm housing (16) and a lower diaphragm housing (11). A diaphragm (14) is installed inside the upper diaphragm housing (16), and a main adjustment load-bearing disc (15) is installed on the diaphragm (14). A valve port (12) is formed on the valve body. A valve port gasket (13) is installed below the main adjustment load-bearing disc (15). A sensing assembly (10) is installed on the upper diaphragm housing (16). The sensing assembly (10) includes a displacement sensor (7), a scale (3), and a knurled high nut (1). The surface of the knurled high nut (1) is in contact with the main adjustment load-bearing disc (15). The lower end of the scale (3) is connected to the knurled high nut (1), and a scale return spring (2) is installed on the scale (3).

2. The valve position remote transmission device of a straight rod type voltage regulator according to claim 1, characterized in that , A sensor protection sleeve (8) is sleeved outside the displacement sensor (7), and the sensor protection sleeve (8) is arranged above the knurled high nut (1).

3. The valve position remote transmission device of a straight rod type voltage regulator according to claim 2, characterized in that, A scale base (5) is arranged below the sensor protection sleeve (8), and the scale base (5) is connected to the displacement sensor (7) by a scale bracket screw (6).

4. The valve position remote transmission device of a straight rod type voltage regulator according to claim 3, characterized in that, An O-ring seal (4) is arranged below the scale base (5), and the O-ring seal (4) is arranged above the knurled high nut (1).

5. The valve position remote transmission device of a straight rod type voltage regulator according to claim 2, characterized in that, An explosion-proof cable connector (9) is arranged inside the sensor protection sleeve (8), and the explosion-proof cable connector (9) is arranged above the displacement sensor (7).

6. The valve position remote transmission device of a straight rod type voltage regulator according to claim 1, characterized in that, The upper diaphragm housing (16) is connected to the lower diaphragm housing (11) by two bolts, and the two bolts are symmetrically arranged.

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