A safety valve with position indication

Abstract

The utility model provides a safety valve with position indication, including a valve body, a pressure relief pipe, a valve seat, a sealing mechanism, a spring, a protective shell, an indicating shell, an extrusion plate, a screw, a valve cover, a mounting frame, a controller and a display panel, wherein a pressure relief pipe is fixed to the outer side of the valve body, wherein a valve seat is fixed inside the valve body, and the upper side of the valve seat is fitted with the sealing mechanism; the upper side of the sealing mechanism is in contact with the lower end of the spring, wherein the spring is movably arranged inside the protective shell, and the upper end of the protective shell is fixed with an indicating shell; an extrusion plate is slidably arranged inside the indicating shell, wherein a screw is rotatably installed on the side of the extrusion plate; the screw passes through the valve cover; the outer side of the valve body is fixed with a controller and a display panel through a mounting frame. The arrangement of the valve seat, the sealing mechanism and the indicating shell of the utility model can block the safety valve when in use, and is convenient for detecting whether it is in a pressure relief state, and at the same time, can confirm the intensity of the pressure relief.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety valves, and in particular relates to a safety valve with a position indicator. Background Art

[0002] A safety valve is an automatic valve mainly used on equipment such as boilers, pressure vessels and pipelines. It controls the pressure not to exceed the specified value and plays an important protective role in personal safety and equipment operation. The opening and closing parts of the safety valve are in a normally closed state under the action of external forces. When the medium pressure in the equipment or pipeline rises to exceed the specified value, the safety valve will automatically open to prevent the medium pressure in the pipeline or equipment from exceeding the specified value by discharging the medium outside the system.

[0003] However, the existing safety valve cannot be blocked when pressure relief is not required, and cannot detect whether it is in a pressure relief state, which makes it inconvenient for staff to make corresponding arrangements, and at the same time, the intensity of pressure relief cannot be confirmed. Utility Model Content

[0004] The purpose of the utility model is to provide a safety valve with position indication to solve the problems mentioned in the background technology.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a safety valve with position indication, comprising a valve body, a pressure relief pipe, a valve seat, a sealing mechanism, a spring, a protective shell, an indicating shell, an extrusion plate, a lead screw, a valve cover, a mounting frame, a controller and a display panel, wherein the valve body is fixed on the pressure pipe through a flange, and the outer side of the valve body is fixed with a pressure relief pipe through welding, and the pressure relief pipe is connected to the pressure relief pipe through the flange; a valve seat is fixed inside the valve body, wherein the upper side of the valve seat is fitted with the sealing mechanism, and the upper side of the sealing mechanism is in contact with the lower end of the spring; the spring is movably arranged inside the protective shell, wherein the protective shell is fixed on the upper side of the valve body, and the upper end of the protective shell is fixed with an indicating shell; an extrusion plate is slidably arranged inside the indicating shell, wherein the lower side of the extrusion plate is in contact with the upper side of the spring, and the upper side of the extrusion plate is rotatably mounted with a lead screw through a support bearing; the lead screw passes through the valve cover through threaded engagement, wherein the valve cover is fixed to the upper end of the indicating shell; a mounting frame is fixed with bolts on the outer side of the valve body, wherein the outer side of the mounting frame is respectively fixed with a controller and a display panel by bolts.

[0007] Furthermore, the valve seat includes a material guide tube, a positioning plate, a ball valve and a handle, the lower end of the material guide tube is fixed with a positioning plate by welding, wherein the positioning plate is fixed to the valve body by bolts; a ball valve is rotatably installed inside the material guide tube, wherein a through hole is penetrated through the inside of the ball valve, and a handle is fixed on the outer side of the ball valve by welding. With this arrangement, the material guide tube can be blocked by the ball valve when there is no need to relieve pressure inside the pressure pipeline.

[0008] Furthermore, the sealing mechanism includes a guide tube, a top plate, a recoil disk, a conductive ring and a coil, wherein the guide tube is fixed inside the valve body, wherein a recoil disk is slidably arranged inside the guide tube; the upper end of the recoil disk is in contact with the top plate, wherein the upper side surface of the top plate is in contact with the lower end of the spring; a conductive ring is fixed on the outer side surface of the recoil disk, and the conductive ring is fitted with the coil, wherein the coil is fixed on the inner wall of the guide tube. Such an arrangement can detect whether it is in a leakage state.

[0009] Furthermore, the indicator shell is made of a transparent polypropylene material, and scale lines are engraved on the outer side of the indicator shell. Such an arrangement can be used to know the downward force of the spring.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The arrangement of the valve seat of the utility model allows the ball valve to rotate manually by rotating the handle if there is no need to relieve pressure inside the pressure pipe during use, thereby blocking the material guide pipe through the ball valve.

[0012] 2. The sealing mechanism of the utility model is set up. During use, when the internal pressure of the pressure pipe is greater than the extrusion force of the spring, the recoil disc and the top plate will move upward, so that the valve seat and the pressure relief pipe are connected, and the pressure inside the pressure pipe is released. At the same time, when the recoil disc moves upward, it will drive the conductive ring to slide on the coil, thereby changing the resistance value between the conductive ring and the upper end of the coil, and then the resistance value is displayed on the display panel through the controller, so that the staff can confirm whether the safety valve is in a pressure relief state.

[0013] 3. The setting of the indicator shell of the utility model allows the position of the extrusion plate to be viewed through the indicator shell during use, and at the same time, the downward force of the spring can be known in conjunction with the scale line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0017] Figure 3 It is a schematic diagram of the valve seat structure of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the sealing mechanism of the utility model.

[0019] In the figure:

[0020] 1-valve body, 2-pressure relief pipe, 3-valve seat, 31-material guide pipe, 32-positioning plate, 33-ball valve, 34-handle, 4-sealing mechanism, 41-guide tube, 42-top plate, 43-recoil disc, 44-conductive ring, 45-coil, 5-spring, 6-protective shell, 7-indicator shell, 8-extrusion plate, 9-screw, 10-valve cover, 11-mounting frame, 12-controller, 13-display panel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner", "all around" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0023] See also Figure 1 and Figure 2As shown, the utility model is a safety valve with position indication, including a valve body 1, a pressure relief pipe 2, a valve seat 3, a sealing mechanism 4, a spring 5, a protective shell 6, an indicating shell 7, an extrusion plate 8, a screw 9, a valve cover 10, a mounting frame 11, a controller 12 and a display panel 13. The valve body 1 is fixed to the pressure pipe through a flange, and the outer side of the valve body 1 is fixed with a pressure relief pipe 2 by welding, and the pressure relief pipe 2 is connected to the pressure relief pipe through a flange; a valve seat 3 is fixed inside the valve body 1, wherein the upper side of the valve seat 3 is fitted with the sealing mechanism 4, and the upper side of the sealing mechanism 4 is in contact with the lower end of the spring 5; The spring 5 is movably arranged inside the protective shell 6, wherein the protective shell 6 is fixed to the upper side of the valve body 1, and an indicating shell 7 is fixed to the upper end of the protective shell 6; an extrusion plate 8 is slidably arranged inside the indicating shell 7, wherein the lower side of the extrusion plate 8 is in contact with the upper side of the spring 5, and a lead screw 9 is rotatably installed on the upper side of the extrusion plate 8 through a supporting bearing; the lead screw 9 passes through a valve cover 10 through threaded engagement, wherein the valve cover 10 is fixed to the upper end of the indicating shell 7; a mounting frame 11 is fixed to the outer side of the valve body 1 by bolts, wherein a controller 12 and a display panel 13 are respectively fixed to the outer sides of the mounting frame 11 by bolts.

[0024] like Figure 3 As shown, the valve seat 3 includes a guide tube 31, a positioning plate 32, a ball valve 33 and a handle 34. The lower end of the guide tube 31 is fixed with the positioning plate 32 by welding, wherein the positioning plate 32 is fixed to the valve body 1 by bolts; a ball valve 33 is rotatably installed inside the guide tube 31, wherein a through hole is penetrated inside the ball valve 33, and a handle 34 is fixed on the outer side of the ball valve 33 by welding. During use, if there is no need to relieve the pressure inside the pressure pipe, the handle 34 can be manually rotated to drive the ball valve 33 to rotate, and the guide tube 31 is blocked by the ball valve 33.

[0025] like Figure 4 As shown, the sealing mechanism 4 includes a guide tube 41, a top plate 42, a recoil disc 43, a conductive ring 44 and a coil 45. The guide tube 41 is fixed inside the valve body 1, wherein a recoil disc 43 is slidably arranged inside the guide tube 41; the upper end of the recoil disc 43 is in contact with the top plate 42, wherein the upper side surface of the top plate 42 is in contact with the lower end of the spring 5; a conductive ring 44 is fixed on the outer side surface of the recoil disc 43, and the conductive ring 44 is fitted with the coil 45, wherein the coil 45 is fixed on the inner wall of the guide tube 41. During use, when the internal pressure of the pressure pipe is greater than the extrusion force of the spring 5, the recoil disc 43 and the top plate 42 will move upward, so that the valve seat 3 is connected to the pressure relief pipe 2, and the pressure inside the pressure pipe is released. At the same time, when the recoil disc 43 moves upward, it will drive the conductive ring 44 to slide on the coil 45, thereby changing the resistance value between the conductive ring 44 and the upper end of the coil 45.

[0026] Specifically, the indicator shell 7 is made of transparent polypropylene material, and the outer side of the indicator shell 7 is engraved with scale lines. When in use, the position of the extrusion plate 8 can be seen through the indicator shell 7. At the same time, with the scale lines, the downward force of the spring 5 can be known.

[0027] Specifically, a PLC, a power supply and a multimeter are fixed inside the controller 12, wherein the positive pole of the multimeter is connected to the upper end of the coil 45, and the negative pole of the multimeter is connected to the conductive ring 44; the multimeter is connected to the PLC via a data line, wherein the PLC is connected to the display panel 13 via the data line. When in use, the multimeter can measure the resistance value between the conductive ring 44 and the upper end of the coil 45, and then transmit the resistance value to the PLC, and then display the resistance value on the display panel 13 through the PLC, so that the staff can confirm whether the safety valve is in a pressure relief state.

[0028] See also Figure 1-4 As shown, the utility model is a safety valve with position indication, and its working principle is: when in use, if the pressure inside the pressure pipe is greater than the downward force of the spring 5, the pressure drives the recoil disc 43 to move upward, thereby releasing the pressure through the pressure relief pipe 2, and the extrusion plate 8 can be adjusted to move up and down by rotating the screw 9, and the downward force of the spring 5 can be adjusted. At the same time, through the cooperation of the sealing mechanism 4 and the controller 12, whether the safety valve is in a pressure relief state can be displayed on the display panel 13.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A safety valve with position indication, comprising a valve body (1), a pressure relief pipe (2), a valve seat (3), a sealing mechanism (4), a spring (5), a protective shell (6), an indicating shell (7), an extrusion plate (8), a lead screw (9), a valve cover (10), a mounting frame (11), a controller (12) and a display panel (13), characterized in that: The valve body (1) is fixed to the pressure pipe via a flange, and a pressure relief pipe (2) is fixed to the outer side of the valve body (1), and the pressure relief pipe (2) is connected to the pressure relief pipe via the flange; a valve seat (3) is fixed inside the valve body (1), wherein the upper side of the valve seat (3) is fitted with a sealing mechanism (4), and the upper side of the sealing mechanism (4) is in contact with the lower end of a spring (5); the spring (5) is movably arranged inside a protective shell (6), wherein the protective shell (6) is fixed to the upper side of the valve body (1), and the upper side of the protective shell (6) is An indicating shell (7) is fixed at the end; an extrusion plate (8) is slidably arranged inside the indicating shell (7), wherein the lower side of the extrusion plate (8) contacts the upper side of the spring (5), and a lead screw (9) is rotatably mounted on the upper side of the extrusion plate (8); the lead screw (9) passes through a valve cover (10) through threaded engagement, wherein the valve cover (10) is fixed to the upper end of the indicating shell (7); a mounting frame (11) is fixed to the outer side of the valve body (1), wherein a controller (12) and a display panel (13) are fixed to the outer side of the mounting frame (11).

2. A safety valve with position indication as claimed in claim 1, characterized in that: The valve seat (3) comprises a material guide tube (31), a positioning plate (32), a ball valve (33) and a handle (34); the positioning plate (32) is fixed to the lower end of the material guide tube (31), wherein the positioning plate (32) is fixed to the valve body (1); the ball valve (33) is rotatably mounted inside the material guide tube (31), wherein a through hole is penetrated inside the ball valve (33), and the handle (34) is fixed to the outer side surface of the ball valve (33).

3. A safety valve with position indication as claimed in claim 1, characterized in that: The sealing mechanism (4) comprises a guide tube (41), a top plate (42), a recoil disc (43), a conductive ring (44) and a coil (45); the guide tube (41) is fixed inside the valve body (1), wherein a recoil disc (43) is slidably arranged inside the guide tube (41); the upper end of the recoil disc (43) is in contact with the top plate (42), wherein the upper side surface of the top plate (42) is in contact with the lower end of the spring (5); a conductive ring (44) is fixed on the outer side surface of the recoil disc (43), and the conductive ring (44) is arranged in close contact with the coil (45), wherein the coil (45) is fixed to the inner wall of the guide tube (41).

4. A safety valve with position indication as claimed in claim 1, characterized in that: The outer side surface of the indicator shell (7) is engraved with scale lines.

Images